Notes for purchasing oil-free reciprocating vacuum pump

Oilless reciprocating vacuum pump I don't know if you've heard of it. Our company mainly deals in 2BV water ring vacuum pump, oilless reciprocating vacuum pump, vertical reciprocating vacuum pump, etc. Today we mainly introduce oil-free reciprocating vacuum pump, welcome to read!
Oilless reciprocating vacuum pump is a mechanical vacuum pump, without any oil lubrication can run. The utility model has the advantages of simple structure, convenient operation, convenient maintenance and no pollution to the environment. Vertical oil-free vacuum pump has good durability, is a vacuum, compression, dual-use vacuum pump. It is a basic device with a wide range of applications for obtaining a vacuum.
Compared with oil pump, oilless reciprocating vacuum pump degree is low, pumping capacity is small, but small size, easy to install, easy to maintain, easy to move, do not produce smoke, do not pollute the environment especially in the laboratory with higher requirements. It is also one of the most commonly used devices in the laboratory.
Therefore, in the purchase of oil - free reciprocating vacuum pump, the first need to determine the vacuum required by the work. If the demand is high, the selected vacuum pump should be higher than the required vacuum. Otherwise, the vacuum cannot be satisfied. Failure to meet job requirements. The second is the vertical oil-free vacuum pump pumping speed, slightly greater than the required pumping speed, so can better meet the needs. Finally, to see if the extracted gas is corrosive, corrosive gas will corrode the pump, must use special materials to meet the needs.
New Liquid Ring Vacuum Pumps for Sale

Vacuum pump for industrial clamping 

What are the conditions for using Roots blower with three leaves?

Roots blower with three leaves
Conditions 1: Model matching with working conditions
When three-leaf Roots blower is in use, the selected model must match the working condition information. The model can be redundant working condition. If the model is too small, the three-leaf Roots blower will not meet the working condition requirement, and it will also cause great damage to the blower.
Conditions 2: Regular maintenance
The knowledge of maintenance has been mentioned many times in previous articles that the maintenance of Roots blower with three leaves is very important and one of the necessary conditions for using Roots blower.
Conditions 3: Reasonable installation environment
When installing Roots blower, scientific and reasonable design must be carried out. Roots blower will generate heat when it works. Roots blower can not be installed in low ventilated environment when it is installed.
Conditions 4: Not interchangeable between different models
Roots blowers with different parameters can not be used interchangeably, nor can different types of blowers be used interchangeably. For example, centrifugal blowers and Roots blowers can be used interchangeably. Because different types of blowers have different characteristics and different air volume and pressure, interchangeable use may cause very serious consequences.
Conditions 5: Operate according to the product instructions.
Roots blower with three leaves can not only convey clean air, but also convey other special materials, such as biogas, gas, etc. If Roots blower is used in this situation, it must be operated according to the operating instructions.
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How can a rookie become an expert in wind turbines

Roots fan is a volumetric fan. The air flow is proportional to the rotational speed. The three-blade impeller is sucked and exhausted three times by two impellers every time it rotates. Compared with the two-blade impeller, the gas pulsation becomes less, the load changes less, the mechanical strength is higher, the noise is lower and the vibration is smaller. There are two three-blade impellers on two parallel axles. There is always a small gap between the wheel and the orifice in the elliptical box and each impeller. Because the impeller rotates in the opposite direction and uniformly, a certain amount of gas surrounded by the box and impeller is transported from the inhaled side to the exhausted side. Each impeller keeps the correct phase from the synchronous gear all the time, and does not touch each other. Therefore, it can be high-speed without internal lubrication, and has simple structure, stable operation, stable performance and adaptability to various uses. It has been used in a wide range of fields. In short, its working principle is: the top of the rotor is like the moment when the exhaust outlet line opens, the high-pressure air of the exhaust outlet can be reversed and compressed. This countercurrent and compression produce drastic pressure changes. This pressure change causes the noise of the fan.
Roots blower is a kind of volumetric rotary blower. Its principle is that when air passes through the muffler into the blower, the two impellers in the casing will keep a certain gap between each other. Then Roots blower will drive the equal speed reverse rotation through the synchronous gear, push the inhaled gas from the inlet to the outlet, and overcome the resistance of the high pressure gas at the outlet side by phase method, and pass through the exhaust muffler. Safety valves and other forced exclusion units, ultimately to achieve the purpose of conveying gas.
From the point of view of use, when the Roots blower fan starts, there is no need to install valves at the intake, while the centrifugal blower must close all the inlet valves and install energy-saving valves at the intake. Moreover, Roots blower and centrifugal blower must adjust the air volume by adjusting the rotational speed. The larger the adjusting range, the smaller the centrifugal blower can adjust by adjusting the intake valve. It should be noted that after the selection of the centrifugal blower model, the boost will be fixed, and the overpressure can not be used. If the pressure is found to be low in the use process, the blower can not be used by increasing the power of the motor. When the pressure selected by Roots blower is not the maximum allowable boost of the blower, the use pressure of the blower can be increased by increasing the power of the motor. Power. In addition, from the point of view of performance characteristics, Roots blower has the characteristics of hard exhaust when the pressure becomes smaller and the flow changes very little. When the pressure of centrifugal blower varies, the flow rate varies greatly. From the price point of view, small flow blower, Roots blower than centrifugal blower has greater advantages.
1. Fans can be classified into several types according to the material used, such as iron shell fans (ordinary fans), FRP fans, plastic fans, aluminium fans, stainless steel fans, etc.
2. The fan can be divided into centrifugal, axial, oblique (mixed) and cross-flow types according to the direction of flow after the air enters the impeller.
3. Fans can be divided into pressure-type local fans (hereinafter referred to as pressure-type fans) and flameproof motors which are placed outside or inside the runner and flameproof motors which are placed in the flameproof sealed chambers (hereinafter referred to as extractive local fans).
4. Fans can also be divided into single-stage, double-stage or multi-stage pressurized fans according to the form of pressurization. Roots fans are multi-stage pressurized fans.
5. Fans can be divided into: axial flow fan, mixed flow fan, Roots blower, roof fan, air conditioner fan, etc. according to the purpose.
6. Pressure of fan can be divided into low pressure fan, medium pressure fan and high pressure fan.
7. Classified according to different uses: ordinary Roots blower; negative pressure Roots blower; Roots blower for special gases.
The negative pressure Roots blower is mainly used for vacuum packaging and other pumping purposes, while the special gas Roots blower is mainly used for conveying inflammable and explosive gases such as natural gas and gas. The sealing mode is piston ring seal, which can ensure zero leakage.
8. According to the different classification of impellers: two-blade Roots blower; three-blade Roots blower.
Roots blower was first used with two-blade type. With the renewal of technology, the three-blade roots blower gradually replaced the two-blade roots blower with the air volume below 130 m3/min, but the two-blade roots blower was still used over 130 m3/min.
Note: The impeller of a fan has three blades called a three-leaf Roots blower and two blades called a two-leaf Roots blower.
9. According to different cooling modes, they are classified as air-cooled Roots fans and water-cooled Roots fans.
When the pressure is below 65KPA, air-cooled Roots blower is selected, and water-cooled Roots blower is selected when the pressure is above 65KPA.
10. According to the structure of fan, it can be classified as single tank type, double tank type and dense type.
When the pressure is below 50 KPA, single tank type is chosen, and double tank type is chosen when the pressure is above 50 KPA. The dense roots blower covers a small area. The outlet of the blower is below the blower. The outlet muffler is connected from the bottom of the blower. The outlet is placed horizontally with the ground. Intensive selection is generally specified for customers.
Food vacuum package blower

Roots blower for flour industry 

Roots Blower Classification

The Roots blower used in sewage treatment is of low noise or silent type. The main types are as follows:
Roots blower, rotary blower, mute liquid ring blower.
With the rapid development of environmental protection industry, the requirement of environmental water treatment is becoming higher and higher. Especially in the core component of sewage treatment - aeration equipment, Roots blower operation noise requirements are also increasing. In order to avoid secondary pollution - noise pollution of aeration blower. Low noise aerated Roots blower came into being at the historic moment.
In fact, low noise is only relative, such as Shaanxi sewage treatment Roots blower, the current use of three-leaf Roots blower compared to the previous use of two-leaf Roots blower noise reduction by 20% - 30%, known as low noise Roots blower, of course, different manufacturers, different quality of fans, Roots blower noise is also different.
For example, the noise range of Roots blower with 3.46 m3/min air volume is 75-80 dB.
In order to meet the requirements of low noise of Roots fans for water treatment, there are low noise rotary fans and silent liquid ring fans for customers to choose. These two fans are identical in use with Roots fans for sewage treatment in Shaanxi Province. Because they are different in design principle and use mode from Roots fans, the operation noise is greatly reduced. Rotary fan with the same technical parameters, air volume 3.25 m3/min, operating noise range 63-69 decibels. The noise of the liquid-ring fan with the same technical parameter of 3.78 m3/min is only about 60 dB. From this we can see that the low noise fan is only relative, and the silent fan is only relative to the low noise fan. Of course, when customers choose the aeration blower, they should take other factors into account, such as the cost of the blower, operating costs, follow-up maintenance and so on.
Roots Blower for Cement Industry

Roots Blower Used in Chemical Fertilizer Industry 

Roots blower

Efficient Roots Blower Pack with Three Leaves.

KBKP series Roots blower is developed on the basis of KBKV series. The biggest characteristic of the blower is its high speed (the highest speed on the blower shaft can be as high as 4450 rpm), and high capacity.
With the breakthrough of technology and the improvement of practical application, KBKP series blowers have higher efficiency, higher pressure and lighter weight than KBKV series blowers. Entrance size is 2.5 "to 12". The pressure of a single blower can be 1 Kgf/cm_.
The utility model has the advantages of high efficiency, good cushion structure, reduced cross-section area of the rotor and increased capacity.
Low vibration, high balance accuracy (G2.5) can control the vibration of X, Y, Z coordinates.
The pressure loss is small, and the vertical structure between the inlet and outlet is 180 degrees, which reduces the pressure loss of the blower.
Blowers include:
Base, safety cover, intake muffler, belt pulley, belt, outlet pipe, safety valve, pressure gauge, one-way valve, anti-vibration connector, outlet muffler, shock absorber.
Pulp dehydration blower

Roots Blower for Shipping Industry 

Difference between Centrifugal Blower and Roots Blower

Blowers, sometimes simply called fans, are widely used in the fields of metallurgy, minerals, smelting, sewage treatment, chemical fertilizers, aquaculture, etc. According to the different materials and uses, blowers can be divided into many kinds. Centrifugal blowers and Roots blowers are two different kinds of blowers. Customer service of high-pressure blower manufacturers will introduce them to you.
The difference between centrifugal blower and Roots blower is mainly manifested in the following two aspects:
1. Roots blower and centrifugal blower have different working principles.
Roots blower is a kind of volumetric blower, which relies on the impeller's rotation to achieve air transmission. There is always a small gap between the impeller of Roots blower and the inner wall of the casing, between the impeller and the wall panel, between the impeller and the impeller, so that, driven by synchronous gears, gas can be transported from the inlet of Roots blower to the exhausted side along the inner wall of Roots blower shell.
The working principle of centrifugal fan is similar to that of centrifugal fan. The high-speed rotation of the rotor drives the air to move at high speed. The centrifugal force is used to make the air flow in the involute shell to the outlet of the fan along the involute.
2. Roots blower and centrifugal blower have different working parameters and using places.
Roots blower belongs to constant flow volume blower, the main parameter of which is air flow. The output pressure of Roots blower varies with the change of pipeline and load, but the change of air volume is very small. Centrifugal blower belongs to constant pressure blower. The main working parameter is pressure. The output air volume varies with the change of pipeline and load, but the pressure does not change much. Therefore, if the load needs constant flow effect, Roots blower is the preferred choice. The centrifugal blower is even better if the load requires a high pressure effect.
Special gas pressurized conveying roots blowers

Material transport blower

How to Prevent Overload of Roots Vacuum Pump

The power required to compress gas in Roots middle-ring vacuum pump is proportional to the pressure difference. Once the pressure difference is too high, the middle-ring vacuum pump may overload and cause motor winding burning. There are several ways to solve the overload problem of the central vacuum pump:
1. The mechanical automatic pressure regulating bypass valve is adopted. The bypass valve is installed in the bypass pipeline between the outlet and the inlet of Roots Central Vacuum Pump. The pressure difference between the inlet and outlet of this valve control pump does not exceed the rated value. When the pressure difference reaches the rated value, the valve opens automatically by the pressure difference function, which makes the outlet and inlet of Roots central vacuum pump communicate, and makes the pressure difference between the inlet and outlet decrease rapidly. At this time, Roots vacuum pump works under almost no pressure difference load. When the pressure difference is lower than the rated value, the valve closes automatically and the gas passes through.
Roots Central Vacuum Pump is pumped by the front pump. Roots middle ring vacuum pump with pump bypass relief valve can start at the same time with the front pump, which makes the operation of the unit simple and convenient.
2. Hydraulic couplings are used; hydraulic couplings can also prevent the overload of pumps, so that pumps can work under high pressure difference. The hydraulic coupling is installed between the pump and the motor. Under normal working conditions, the hydraulic coupling transmits rated torque from the motor end to the pump. The maximum pressure difference of Roots middle ring vacuum pump is determined by the maximum torque transmitted by the hydraulic coupling, and the maximum torque transferred by the hydraulic coupling is regulated by the amount of liquid in it. When the pump works under high pressure difference or starts at the same time with the front pump, the speed difference, i.e. sliding, occurs inside the liquid coupling, which only transmits a certain moment to slow down the pump. As the pumping proceeds, the gas load decreases, and the Roots middle ring vacuum pump gradually accelerates to the rated speed.
3. Vacuum electrical components are used to control the inlet pressure of the pump; vacuum diaphragm relay or electric contact vacuum pressure gauge are installed in the outlet pipeline of Roots central vacuum pump. After the start of the vacuum system, when the pressure at the entrance of Roots vacuum pump is lower than the given value, the pressure sensor sends out a signal and opens the Roots vacuum pump through the electrical control system. If the inlet pressure of the pump is higher than the prescribed value, the Roots Central Vacuum Pump will be automatically closed, thus ensuring the reliable operation of the Roots Central Vacuum Pump.
Vacuum Pumps for Web Printing Machine

Stir homogenization library blower 

High Vacuum Dry Pump

Miniaturization and integration are important trends in the development of dry vacuum pumps. High vacuum dry pump is a representative new type of dry pump. In this paper, the single helix rotor, one of the important components of high vacuum dry pump, is studied numerically. By analyzing the important parameters of geometric model and combining the program idea of direct simulation Monte Carlo, the working process of single helix rotor is simulated. The influence mechanism of geometric parameters of single helical rotor on pumping efficiency is simulated, and the parameter adjustment mechanism which affects the performance of high vacuum dry pump is obtained, which provides theoretical basis and guidance for the design of high vacuum dry pump.
In recent years, the screw vacuum pump (screw pump) has attracted much attention. Its rotor adopts spiral space curve, which has many obvious advantages, such as smooth transmission medium, low noise, high allowable speed, compact structure, long service life and so on. Screw pumps are widely used in industry and national defense, such as chemical pharmaceuticals, aerospace, petrochemical, semiconductor equipment, special gas recovery, general industry and so on. Single screw pump is a kind of screw pump. It uses high-speed rotating rotor surface to carry gas molecules, so that the gas is continuously pumped out of the pump body. It has the characteristics of minimal disturbance and smooth transmission.
Cleaning, miniaturization and simplification are important trends in the development of vacuum acquisition equipment and systems, among which the most representative is the dry vacuum acquisition technology directly discharged into the atmosphere in the high vacuum range. The high vacuum dry pump is composed of a variety of high-speed rotating uniaxial pumps, and a single helical rotor is used near the suction side to complete the suction transmission process of large displacement. In the process of gas transmission, the selection of structural design parameters such as blade shape, number, size and inclination of helical rotor will have a great influence on its pumping performance.
The basis of direct simulation Monte Carlo (DSMC) method is to track the trajectory of the simulated molecules. This process starts from the given initial state. The selection of the initial state is arbitrary under the condition that the MACRO-FLOW is a steady flow. In the tracking process, the parameters of the simulated molecules in different states are recorded, and then the macro-state of the gas can be obtained by further statistical averaging. The parameters of states. The helical stage is mainly located in the molecular flow region in the working process. Based on Bird's improved DSMC method, the numerical simulation method of the gas flow field in the helical groove channel in the rotor model can be established.
In the application of high vacuum dry pump, the performance of helical rotor can be simulated effectively.
Freeze dryer vacuum pump

Rotary evaporator vacuum pump 

3D industrial blower fan animation

Rotary vacuum pump three attributes

In its simplest design, the oil-lubricated rotary vane vacuum pump contains a circular rotor that can move in a large circular cavity. The positioning of the rotor in the cavity results in eccentricity of motion, because the centers of the two components are never aligned with each other. On the suction side of the vacuum pump, the volume of the vane chamber increases, thus pulling the fluid into the interior. When in the discharge side of the pump, the pressure of the vane chamber decreases, which causes the fluid to leave. Subsequent rotations process the same amount of fluid several times.
By looking at its three main characteristics, we can better understand the rotary vacuum pump.
Multistage pump
Oil-lubricated rotary vane vacuum pumps have single-stage and two-stage versions. The pressure of two-stage pump is lower than that of single-stage pump. In addition, ballast gas has little effect on the ultimate pressure because it can only enter at high pressure.
Working fluid
Pump oil, also known as workflow, performs many tasks in rotary vacuum pumps. It lubricates all moving parts of the pump and fills in the narrow gap between the dead volume and the inlet and outlet. Clearance between pump oil compressor blade and chamber. It also ensures optimal temperature balance through heat transfer.
Safety valve
Oil lubricated rotary vane vacuum pump can be equipped with safety valve function. The element isolates the pump from the studio at rest, whether intentionally or unintentionally. It also uses the exhaust gas discharge pumping system to avoid oil entering the chamber. After switching on the vacuum pump, when the pressure in the pump reaches the same pressure in the studio, the safety valve opens.
Rotary vacuum pump manufacturers are used in many applications in automotive, aerospace, medical and chemical laboratories and other industries. We focus on providing rotary vacuum pump systems that are widely used in these industries. With more than 20 years of experience in this field, we have professional knowledge and can provide the most suitable rotary vacuum pump and components according to your unique needs.
Roots blower for aquaculture

Oil-lubricated rotary vane vacuum pump 

What industries are there in the use of vacuum pumps?

Vacuum pump has been widely used in metallurgy, chemical industry, food, electronics coating and other industries. Vacuum pumps we know all have water ring pumps, reciprocating pumps, sliding valve pumps, rotary vane pumps, Roots pumps and diffusion pumps, etc. Today, with the continuous development of various industries, the demand of these pumps is still rising.
But many people want to know when choosing and purchasing a vacuum pump, will it be sensitive to the dust and water vapor in the extracted gas? In fact, the vacuum pump is a rotating variable volume, the vacuum pump must have the cooperation of the front pump in order to use a larger pumping speed in a wider pressure range, and will not be sensitive to the dust and water vapor in the extracted gas. Vacuum pump has vertical structure of the intake and exhaust port level settings, assembly and connection pipelines are more convenient.
Of course, there are many kinds of vacuum pumps, so their configuration is also different, but we should slowly understand and explore.
Vacuum pump for laminator

What kind of vacuum pump is used in the suction machine? 

Vacuum pump vacuum is too low

A few days ago, a friend called our company to make comments, saying that your previous methods of vacuum pump maintenance are too general, can you give us a specific breakdown of which problems have arisen, followed by the solution to this problem?
First of all, the company thanks the friend for his call, which shows that some people pay attention to the company, some people pay attention to the maintenance of vacuum pumps. Xiao Editor has been approved by the company's leadership. In the next news, he will explain the skills of vacuum pump maintenance to you one by one. Oh, and the skills of Lyboa vacuum pump maintenance, Edward vacuum pump maintenance, Alcatel vacuum pump maintenance, German Pufa vacuum pump and so on.
Then, the first thing that Xiaobian wants to explain is that the vacuum degree is too low in the maintenance of vacuum pumps. In fact, there are many reasons for the low vacuum, the most common of which is:
(1) insufficient supply of working fluid; solution: increase the supply of working fluid.
(2) Pump disc or impeller is corroded; Solution: Check and replace pump disc or impeller.
(3) System leak; Solution: System leak detection.
(4) The working fluid temperature is too high; Solution: Reduce the working fluid temperature.
(5) Pump selection is too small to lower the pumping rate; Solution: replace the vacuum pump with larger pumping speed.
Above is the reason why the vacuum is too low and the solution.
Stainless steel rotary vane vacuum pump

Industrial vacuum pump selection 

Turbo Pump Supply

Solution to Inability of Start-up of Medium-Ring Rotary Vacuum Pump

Central vacuum pump specializes in the production and maintenance of various types of water ring vacuum pumps, but also encountered a variety of rotary vane vacuum pump problems, and after a period of time can not start normally is one. So what should we do when we meet this situation? The Central Vacuum Pump puts forward the following points, hoping to help you.
1. Check whether it is the mechanical fault of the rotary vane vacuum pump itself.
If this is the case, the main reasons are: too tight packing or between impeller and pump body blocked by debris; pump shaft, bearing, leakage ring rust; pump shaft serious bending, etc. Solutions: Relax the packing, dredge the water diversion tank; remove the pump body to remove impurities and rust; remove the pump shaft to correct or replace the new pump shaft.
2. The power supply of the rotary vane vacuum pump should be checked to see if it is normal: whether the connection is reliable; whether the switch contacts are tight; whether the fuse is fused; whether the three-phase power supply is unequal. If there are circuit breaks, bad contacts, fuse fuses and phase gaps, the causes should be identified and repaired in time.
Vacuum Pump for Vacuum Furnace

Ball valve supply  

How to control the flow of the rotary vane vacuum pump

Rotary vane vacuum pump flow control adjustment has always been a headache for the industry. Common methods include adjusting the plunger or piston stroke, adjusting stroke and pump speed. Among them, the method of adjusting stroke is the most widely used. The method of change is simple and reliable. There are three ways to adjust the stroke:
1. Manual adjustment when parking: manually adjust the stroke of the rotary vane vacuum pump when parking.
2. Manual adjustment during operation: change the axial displacement during pump operation to change the radius of the crank in a simple manner to achieve the purpose of adjusting the stroke length. Commonly used methods include N-shaped crankshaft adjustment, L-shaped crankshaft adjustment, and eccentric cam adjustment.
3, automatic adjustment during operation: there are two kinds of pneumatic control and electric control. Pneumatic control achieves the purpose of automatically adjusting the stroke by changing the pressure signal of the air source; the electric control achieves the purpose of automatically adjusting the stroke by changing the electrical signal.
The rotary vane vacuum pump can realize the two-dimensional adjustment of the output flow of the metering pump by adjusting the stroke length and the reciprocating frequency under the condition of the metering medium and the working pressure. In relatively simple applications, the stroke length can also be set manually, using only the stroke frequency as a manipulated variable, simplifying system configuration. Which method is used specifically, you can choose according to your actual situation.
Axial split pump for irrigation

Vacuum pumps for lithium batteries 

Factors Influencing the Price of 2BV Water Ring Vacuum Pump

We all know that there are many factors affecting the price of 2BV water ring vacuum pump. When we consider buying the machine, we should first examine the manufacturer's production strength. Although the price is a part of the machine, there are many factors affecting the price. For example, the configuration of the machine, like our machine, our electrical configuration is of better quality. Electrical configuration, such as solenoid valves or suitable frequency converters, we have good electrical configuration, so customers feel that our prices are high, but for different types of machines, our prices are also different. Now the market machinery is like this, from tens of thousands to tens of thousands of yuan or hundreds of thousands of yuan are different, so we choose the model or our. The level of work efficiency.
If the price is too cheap, the performance of our machine can not be guaranteed. If the price is much lower than that of the same model on the market, we can easily see that the quality of the machine will not be very high. Maybe there was no problem with using it at that time, but after a period of time, we will surely find that the performance of the machine itself is as follows: Unguaranteed, in order to avoid unnecessary maintenance costs, we still need to ensure the quality of our machines. We can't buy cheap machines for the sake of cheapness alone.
In fact, we can think of it very simply. We buy machinery and equipment in order to ensure that our production can be used quickly and effectively, and that our machines can be used for a long time. The price is expensive. Now we all know that one price is one price, one goods. Therefore, we can choose the same machinery and equipment to use. We can not only look at the price alone, but also at the relative price. We should consider the configuration, performance characteristics, work efficiency, after-sales service and our warranty time. These are the problems we should consider when buying machines.
Therefore, when people choose 2BV water ring vacuum pump, they can not only want to buy cheap products, but also choose according to its quality, so as to be conducive to their own use.
Spilt casing pump supply

Vacuum pump for kneader 

Axially Split Casing Double Suction Pump

Horizontal Split Case Pump

What do you know about water ring vacuum pump?

Water ring vacuum pump (referred to as water ring pump) is actually a crude vacuum pump, in this point, we are actually to pay attention to the limit vacuum it can obtain is actually 2000~4000Pa, in terms of its series atmospheric injector, in fact, to a large extent, it can reach 270~670Pa. And, the water ring vacuum pump, to a certain extent that will be called a compressor.
Moreover, we also is to actually pay attention to in terms of water ring vacuum pump, it in the beginning, is also used as a self-priming pump, in the case of after, actually also is gradually used in petroleum, chemical industry, as well as in the machinery, mining and light industry, medicine and food and many other industrial sectors have a very good application.
In many technological process of industrial production, common also is actually refers to the vacuum filter, and will include vacuum water diversion, vacuum feed, then, is also include vacuum evaporation, vacuum concentration and vacuum resurgence and vacuum degassing equipment, water ring vacuum pump itself also is actually would steel is widely used.
Then, we are in fact to pay attention to the application of vacuum technology on the leap in the development of water ring vacuum pump in the rough vacuum, will always be paid attention to. Because the compression of the gas in the water ring pump is essentially isothermal for the most part, and at this point, we're really just going to have to pay attention to the fact that to some degree it's going to be able to remove flammable or explosive gas, and in addition to that, it's going to be able to remove dust or water gas.
Finally, it is in the water ring vacuum pump body in fact will be directly installed with the right amount of water as its working fluid. And, in terms of the impeller, it should be in accordance with the direction of its instructions clockwise rotation, water is actually impeller will be directly thrown around, because of the role of centrifugal force on the water ring vacuum pump, it will also form a closed structure.
Industrial Vacuum Pump

Plastic Industry Vacuum System 

Application field of vacuum pump

In the field of vacuum equipment, research and development of vacuum equipment, equipment, parts and other aspects of the application of the bollywood vacuum pump, its size and performance are different. We specialize in the development and production of vacuum products to meet the needs of these customers. Therefore, we can fully participate in the production process of customers and gain valuable experience to benefit our industry partners.
Analysis and medical technology
The analytical instrument industry, which operates under vacuum conditions, is one of the largest and most complex markets for vacuum equipment. The mall includes a family of planar analytical instruments, mass spectrophotometers, a diverse program of electron microscopes and helium leak detectors.
We have a wide range of products that are suitable for laboratory development and the simplest desktop operation. Some key function parameters show the excellent working ability of lebo vacuum pump, measuring equipment and components, compact structure planning, superb technical level and outstanding stable function.
Thin film technology
Thin-film technology is intangible but more effective, and its applications include: building glass coated with insulating anti-radiation paint, preventing glare and scratches, CD and cold light lamp coating to enhance light and reflection, coating on tools and bearings to avoid wear and tear, and so on.
These are impossible without vacuum technology and specially designed vacuum elements.
Butterfly valve supply
Vacuum pump for extruder

ZG Series Roots Blower 

Which operating conditions are suitable for dry vacuum pumps

Dry vacuum pump is a kind of new product which does not need any water or oil as medium. It has the advantages of simple internal structure, easy operation and low maintenance cost, especially zero pollution. The equipment has become an advanced and practical vacuum pump. At the same time, the equipment has another feature. It can compress gas and vacuum. It is really a good product that kills two birds with one stone.
Dry vacuum pumps are suitable for a wide range of working conditions and environments. Here are some categories for your reference. One is the paper industry, using this equipment to realize automatic packaging of vacuum suction and pull open bags and materials, while printed paper uses the principle of vacuum suction. In the plastic industry, vacuum filling of liquids is realized and different plastic products are vacuum suction moulded. In the pharmaceutical industry, dry pumps can be used in automated production lines. Some vacuum chuck fixtures are processed on non-magnetic zero clamps.
From these points of view, the working condition of dry vacuum pump is widely used. No matter in which industry, it can realize all kinds of production by its superior application and improve the application ability of products, so that it can continuously improve in the future development process.

Dry Vacuum Pump Supply

Roots blowers supply 

Scope of application of rotary vane vacuum pump

Rotary vane vacuum pump is one of the basic equipment for gas extraction. It can be used alone or connected with super high pumps such as booster pump, diffusion pump, molecular pump and so on.
1. Rotary vane vacuum pump is the basic equipment used to extract gases from specific sealed containers so that the container can obtain a certain vacuum. Due to the high development of modern science and technology, the application of rotary vane vacuum pump extends to various scientific fields and various enterprises and institutions. It can be used for metallurgy, chemical industry, light industry, petroleum, medical treatment, pharmacy, printing and dyeing, electrical appliances, vacuum, semiconductor, food, food, etc. Scientific research institutions such as atomic energy, textiles, colleges and universities, industrial and mining enterprises are used for scientific research, production and teaching. It is widely used in oil press.
2. Rotary vane vacuum pump is made of ferrous metal, and it is more precise. The work of the whole pump is linked together, so the rotary vane vacuum pump is not suitable for pumping out all kinds of gases which contain too much oxygen, poisonous, explosive erosion of ferrous metal and have chemical effect on vacuum oil, nor can it be used as compressor and conveying pump. If there is a pump with an air-ballast device, a certain amount of condensable vapor can be removed.
Rotary Vane Vacuum Pump Supply

Oil Diffusion Vacuum Pump Supply 

Working Principle of Different Types of Blowers

Working Principle of Roots Blower and Roots Blower

Roots fan is a constant volume fan. The conveying air volume is proportional to the rotational speed. The three-blade impeller is sucked and exhausted three times by two impellers per rotation. Compared with the two-blade impeller, the gas pulsation is less, the load changes are smaller, the mechanical strength is higher, the noise is lower and the vibration is smaller. There are two three-blade impellers on two parallel axles. There is always a small gap between the wheel and the orifice in the elliptical box and each impeller. Because the impeller rotates in the opposite direction and uniformly, a certain amount of gas surrounded by the box and impeller is transported from the inhaled side to the exhausted side. Each impeller keeps the correct phase from the synchronous gear all the time, and does not touch each other. Therefore, it can be high-speed without internal lubrication, and has simple structure, stable operation, stable performance and adaptability to various uses. It has been used in a wide range of fields.
Working Principle of Centrifugal Blower (Same as Centrifugal Pump)
When the motor rotates to drive the fan impeller to rotate, the gas between the blades in the impeller rotates along with it, and throws out these gases under the action of centrifugal force. The gas flow velocity increases, so that the kinetic energy is converted to the static pressure energy in the flow. Then, with the increase of the fluid pressure, the static pressure energy is converted to the velocity energy, and the gas is discharged through the exhaust port, which forms a certain negative in the impeller. Pressure, because the inlet is negative pressure, so that the outside gas is immediately added under the action of atmospheric pressure, and continuously discharged and added under the action of continuous rotation of impeller, thus achieving the purpose of continuous blast. At the same power, wind pressure and air volume are generally inversely proportional. Under the same power, if the wind pressure is high, the wind volume will be relatively low, but if the wind volume is large, the wind pressure will be lower, so as to make full use of the efficiency of the motor.
The structure and working principle of rotary blower:
Blower pressure range: 0.1-0.5 kgf/cm2 rotary blower has exquisite structure. It mainly consists of the following six parts: motor, air transitor, blower body, air chamber, base (fuel tank) and oil drop nozzle. The blower operates eccentrically by the deflected rotor in the cylinder, and the volume change among the four blades in the rotor slot sucks, compresses and expels air. In operation, the pressure difference of the blower is used to automatically send lubrication to the oil drop nozzle, which drips into the cylinder to reduce friction and noise, while keeping the gas in the cylinder from refluxing.
The structure and working principle of centrifugal blower:
The extrusion propulsion force of the rotating blade enables the fluid to obtain energy, increase its pressure energy and kinetic energy, and its structure is shown in the figure. The impeller 1 is installed in the cylindrical (conical fan) pump housing 3. When the impeller rotates, the fluid flows in the axial direction, and after obtaining energy in the blade passage, it flows out along the axial direction.
Roots Blower Price

Vacuum Pumps: Uses and Applications 

How to Operate Water Ring Vacuum Pump Correctly

Start-up of water ring vacuum pump: Long-term shutdown pump must rotate by hand for several weeks before starting, to ensure that there is no stuck or other damage in the pump. Start in the following order and close the valve in the intake pipe. Start the motor (the motor must turn correctly). Open the valve 6 in the water supply pipeline and supply water to the pump until it meets the requirements.
When the pump reaches the limit vacuum or maximum pressure, open the valve in the intake pipe and the pump starts to work normally. It is best to adjust the packing cap when the water drops out.
Through the valve to adjust the water supply of the pump, to ensure that the pump operates under the required technical conditions, so as to minimize power consumption, achieve performance indicators, and meet the working requirements. Adjust the water supply to the steam-water separator in order to use the minimum water consumption to ensure the technical specifications required by the pump.
When the pump works under the limit pressure, the explosion may occur in the pump due to physical action, but the power consumption does not increase. The valve in the intake pipe can be opened to let it enter a small amount of gas, and the explosion sound disappears immediately. If the explosion sound does not disappear and the power consumption increases, it indicates that the pump has malfunction and should stop for inspection.
Stopping of water ring vacuum pump: Stop in the following order: Close the valve on the intake pipe. Close the water supply valve and stop the water supply to the pump. Turn off the motor. Close the replenishment water valve. If the parking time is longer than one day, the water in the pump and steam-water separator must be emptied to corrode.
Vacuum Pump Systems

High Performance Vacuum Pump 

Advantages and disadvantages of oil-free screw vacuum pump

Oil-free screw vacuum pump, is the piston reciprocating movement in the cylinder to form the cylinder gas expansion contraction, and through the axial placement of the intake and exhaust valve to form the suction and exhaust action, vacuum, as a new type of industrial products, will have its advantages and disadvantages, I will introduce one by one.
The advantages of oil-free screw vacuum pump are:
(1) high limit vacuum;
The oil-free smooth can achieve a clean vacuum;
But no wastewater, cooling water can be recycled;
Of high energy utilization rate, significant energy saving (50% of the water ring pump) save water, save the area;
It is set as it eliminates the s-wave inferior oscillation, small oscillation and low noise after reasonable configuration;
• the selection of stainless steel, titanium materials and other materials can be used in the acid-alkali corrosive situation;
Once through secondary discharge of tail gas condensate system can recover pure solvents;
Therefore when the power outage or shutdown, the pump neither need to worry about pump liquid recharge, also has the function of self-sealing, so that the vacuum system is not directly connected to the atmosphere, to ensure the safety of the vacuum system, which is the above other vacuum pump can not achieve. Such as the running high vacuum distillation system, cold air suddenly enter, will cause tower materials coking, burning, blasting and other dangers, strong safety equipment is the main enemy.
Its disadvantages are:
(1) more moving parts, because we choose the factory parts processing accuracy is not high, the manufacturing quality is rough, resulting in relatively high repair rate;
The factory has some deficiencies in the design of the product structure, but there are many local problems which are worth improving. Such as sealing surface type, cylinder cooling structure, pump chamber fluid cleaning, muffler is not very reasonable.
As the application unit, we expect to have more research machinery and manufacturers to further research and improve the type of vacuum pump, because its excellent function is the modern chemical cleaning production demand. It has great promotion value.
Oil Diffusion Vacuum Pump price

Dry Vacuum Pump price