7/29/2021

Lubrication and maintenance method of water ring vacuum pump

 

1. Lubricating water ring vacuum pump Since the vacuum pump and motor are integrated, only the motor bearings need to be lubricated. Under normal operating conditions (50Hz), motor bearings with class B insulation must be cleaned and added after about 8000 hours or a year. 2. Maintenance of water ring vacuum pump (1) Regularly check whether the bolts are loose, whether the air pipe leaks, whether the packing seal is fastened, whether the packing seal leaks, and whether the rotating parts have friction sound or other noise. If so, stop or repair or replace parts. (2) There shall be no sand or debris in the water. (3) If hard water is used as the working fluid, the water must be softened or the pump must be washed with solvent frequently. It is usually immersed in 10% oxalic acid for 30 minutes or in detergent used in industrial boilers for 30 minutes to remove calcium carbonate. (4) If the pump is not used for more than two weeks, drain the water in the pump, fill the suction port of the pump with 0.5L antirust agent or engine oil, and gently push the pump for less than 1s. (5) If the water ring vacuum pump is used where it may freeze at low temperature, antifreeze and corrosion-resistant working fluid, such as mineral oil, shall be used. Drain the water in the pump chamber after each use. (6) If the water ring vacuum pump does not work for a long time, drain the water in the pump and add anti rust liquid to protect the pump.

7/28/2021

Vacuum sealing wax in vacuum sealing

 

It is used as a seal at removable and immovable joints or to fill small holes in vacuum systems. The joints do not need to be polished. Its hardness and viscosity are higher than vacuum sealing grease. Vacuum sealing wax can be divided into two types: 1. Vacuum sludge. It is a kind of plastic putty made by mechanically mixing refined petroleum grease with high viscosity and low vapor pressure and mountain surplus soil. The characteristics are: good plasticity and easy to form; At the same time, the plasticity changes little with temperature, has good adhesion to metal and glass, and is not easy to be monotonous when exposed to air. It is a black mud like homogeneous body, and the saturated vapor pressure is no more than 10-3. Toto. The application temperature range should not exceed 30 ℃ to avoid softening and deformation. It is used for temporary blocking of parts in the vacuum system that are slightly vibrated and often need to be disassembled, or suspicious air leakage areas found in the system. It is especially suitable for sealing glass pipes without grinding. But it can only be used in low vacuum parts. 2. Vacuum wax: it is made of petroleum residue oil with low vapor pressure and high asphalt content after proper treatment. The characteristics are: in addition to the low saturated vapor pressure and good adhesion to glass and metal, the shrinkage force is small, and the brittleness and non cracking will not change when the temperature changes greatly. It is used for permanent sealing at the grinding joint of metal pipeline in vacuum system and blocking sand holes or loopholes on glass instruments. Its saturated vapor pressure (at 20 ℃) is generally lower than 10-6 Torr, which can be used in high vacuum part. stay Try to make it condense or soften when using, but the temperature should not be too high. It must not be directly baked and heated with open fire. The heating temperature is below 100 ℃. There are 20 #, 50 #, 80 #, and the viscosity of 80 # is the largest.

7/27/2021

What is the ambient temperature of the vacuum pump

 

What is the ambient temperature of the vacuum pump? Too high or too low temperature will affect the operation of the equipment and affect many operations of the equipment. Therefore, users should learn to adjust the temperature and always keep the equipment above a good temperature. So what is the appropriate ambient temperature to use it? 1. Gas analysis and partial pressure measurement under vacuum conditions are usually completed by dynamic mass spectrometer. If the medium to be transported contains solid particles, a filter screen shall be added at the pump inlet; If ferromagnetic particles are contained, a magnetic filter shall be added. 2. The ambient temperature of the vacuum pump in use shall be lower than 40, and the temperature rise of the motor shall not exceed 75. After 1000 hours of normal operation of the magnetic pump, remove the bearing and end face moving ring, check the wear, and replace the vulnerable parts that cannot be reused. For the medium easy to precipitate and crystallize, clean the conveying liquid immediately after use and discharge the liquid accumulated in the pump. The vacuum pump must always be clean. No other articles shall be placed on the vacuum pump, and the channels around the pump shall not be blocked. Always pay attention to the tightness of the V-belt and adjust it. Always pay attention to whether each pipe joint leaks and whether the pre vacuum in the box is reduced, otherwise it needs to be repaired in time; Always pay attention to whether the cooling water is unblocked. Start intermittently 4-6 times within 2S each time to overcome the large torque during startup. Here, we need to know the ambient temperature of the vacuum pump, and we must measure whether the ambient temperature meets the corresponding normal range before formal use. In addition to keeping the vacuum pump at a good temperature, we must also do a good job in heat dissipation.

7/26/2021

How to prolong the service life and maintain the high temperature oil pump?

 

High temperature oil pump is an ideal hot oil circulating pump or heat carrier transfer pump. It is an ideal matching pump for heat exchange equipment. The hot oil pump has reasonable structure, excellent performance and reliable use. It is suitable for conveying high-temperature liquid without solid particles. High temperature oil pump is a general mechanical equipment with a wide range of uses. It is widely used in petroleum, chemical industry, metallurgy, mining, shipbuilding, electric power, agriculture, national defense, national defense and other departments, and plays an important role in the national economy. 1. Measures to improve the service life of high temperature oil pump: (1) The disassembly, cleaning, temperature rise, cooling, start and stop of high-temperature oil pump shall be operated in strict accordance with the regulations to avoid undue losses. The data show that by reducing the temperature in the bearing area, the bearing capacity of the bearing can be greatly increased. There is no need to replace the high-capacity pump. Only by increasing the speed, the output capacity of the gear pump can be increased by 50%. When the back pressure decreases, the pressure of the stuffing box shall be adjusted in time, otherwise the pump will suck in air and the slag oil pump, resulting in the broken strip of the casting strip, affecting the pelletizing and causing the discharge of the pelletizer. (2) The temperature of the heat medium jacket shall be checked frequently, and the heat medium temperature of the main body and the front and rear covers shall be consistent. The outlet pressure measuring point of CQBG high temperature magnetic pump shall be set with interlocking stop alarm, otherwise, once the discharge pipeline is blocked, the pump body is easy to be damaged. When cleaning the liquid transfer, do not use the pump to deliver the cleaning liquid. Remove the internals and install them after the liquid transfer to avoid mixing foreign matters in the pump. (3) When the output increases each time, the output, speed, inlet and outlet pressure and current value at that time shall be recorded, and the data before and after shall be compared and carefully analyzed, so as to find abnormalities as soon as possible and deal with them in time 2. Daily maintenance and operation management of high temperature oil pump: (1) Since the high-temperature oil pump body operates at high temperature, hinged support shall be set on the piping during cold installation to prevent piping displacement after temperature rise. (2) In case of power failure or interruption of heat medium circulation for more than 3omin, the pump shall be disassembled, cleaned and reassembled to avoid damage to the high-temperature pump due to poor bearing lubrication caused by melt solidification and cracking. (3) The melt filter behind the outlet of the high-temperature oil pump shall be replaced regularly and shall not operate under high pressure or even the upper pressure limit for a long time. (4) Precautions when starting the high temperature oil pump. When there is no pressure at the outlet, do not increase the speed blindly to prevent premature damage of the shaft or bearing. (5) The coupling must be thermally aligned after the pump body is heated to avoid additional torque during operation (6) . regular replacement of bearings can save maintenance costs. 3 for the packing shaft seal pump with negative pressure, the pressure at the stuffing box shall be kept higher than the external atmospheric pressure. Because the melt viscosity is a decreasing function of the shear rate, the extrusion of the gear and the shear of the bearing will increase the melt temperature by 3 ~ 5 ℃ after passing through the pump, and reducing the heat medium temperature can prevent melt degradation. (7) Speed up shall be carried out slowly, and the front and rear pressure shall not rise sharply, so as not to damage the bearing or block the lubrication channel with melt. When it is found that the wear on the inner surface of the shaft or bearing is close to the thickness of the hardened layer, the shaft can be polished and reused, and only the bearing can be replaced, which can prolong the service life of the pump shaft by 8 ~ 10 years. (8) The temperature of the heat medium jacket of the pump body can be slightly lower than that of the front and rear jacket. (9) The outlet pressure measuring point of high-temperature pump shall be set with interlocking stop alarm, otherwise, once the discharge pipeline is blocked, it is easy to cause damage to the pump body. (10) When cleaning the liquid transfer, do not use the pump to deliver the cleaning liquid. Remove the internals and install them after the liquid transfer to prevent foreign matters from mixing in the pump.

7/23/2021

Repair of fixed piece mechanical vacuum pump

 

The structure of the stator pump is all combined, which is similar to the small five. The exhaust valve is of the marble type, and the marble will fly off after being used for a long time; Due to the manufacturing shortcomings of some pumps, the * * * hole is too inclined, the marble cannot return to its original position after being lifted by the air flow, and the valve port cannot be blocked, so the vacuum degree is not high. When repairing, the * * * hole can be reamed and driven into the insert sleeve to correct the * * * hole, which can overcome the above shortcomings. After several years of operation of the fixed piece pump, the vacuum becomes worse due to wear. At this time, the components can be disassembled and ground against each other. After cleaning, the assembly sister can be installed. At this time, assuming that the service between the rotor and the end face is too small, the end face can be ground off and then installed. The fixed piece is tensioned by the tension spring to make it close to the rotor to prevent the reverse "breaking" of gas. Therefore, the tension spring has a large expansion frequency and is easy to break. If one of the two tension springs is broken, the beating sound of the exhaust valve is paroxysmal, and the oil tank cover can be removed for inspection. In winter, the viscosity of oil sometimes becomes very large. After stopping the pump, air is not put into the pump chamber in time, resulting in oil filling the pump chamber. When the pump is started suddenly, it is difficult to squeeze out the oil in the cavity. The stator is often squeezed out of the stator slot or the rotor is broken (or even the rotor is cracked), so it is impossible to pump air. When repairing, only the fixed piece escapes. The tail end of the fixed piece can be gently knocked with wood to make it return to the original position, and the belt pulley can be turned by hand. After the pump oil in the cavity is discharged, the pump can be started for air extraction. If the rotor is damaged, it shall be replaced with a new one. Therefore, it is necessary to abide by certain regulations for the start and normal operation of the fixed film pump, and the oil change criteria should be regulated on schedule.

7/22/2021

Water ring vacuum pump helps you choose the most suitable motor

 

Water ring vacuum pump, in the motor matching, we are corresponding matching! In the motor industry, Nanyang explosion-proof Group Co., Ltd. and Jiamusi Motor Co., Ltd. are the biggest brands. The motor matched with fozhen is basically Wannan motor. Haishengda Road Materials Co., Ltd. purchased 2be1303a water ring vacuum unit, and Nanyang motor was selected by the company. However, due to the motor problem, the production time was delayed again. Why do many enterprises choose EVP? Why do many enterprises choose EVP water ring vacuum pump many times? There is a saying: there is a priority in hearing about Taoism, and there is a specialty in art. Whether it is the choice of water ring vacuum pump or motor, we will not choose blindly. For each customer of each industry, match the water ring vacuum pump belonging to their own enterprise, so as to make the effect reach the acme. Best selling 2be water ring vacuum pump Many people are asking fozhen, what's the difference between your 2be and 2BV water ring vacuum pumps? EVP's 2be is optimized and improved on the basis of 2BV. After many internal details are improved, it has long service life and high efficiency, which makes many customers choose 2be.

7/20/2021

Why is the impeller of 2BV water ring vacuum pump grinded?


We found that many enterprises reflect that the impeller of 2BV water ring vacuum pump will be damaged due to friction with the disc
The reasons are as follows:
① The motor shaft moves too much in series
② Unreasonable assembly of impeller and motor shaft
③ The extracted gas contains corrosion, and the motor shaft sleeve is not corrosion-resistant
④ There is no annealing difficulty for the disk, and it is deformed for a period of time
2bvf water ring vacuum pump produced by Foshan Vacuum Pump Factory Co., Ltd.:
① Wannan special motor is adopted and strictly tested before leaving factory (motor shaft is well matched)
② Impeller and shaft adopt strong tension account set to ensure long-term use
③ 304 stainless steel shaft sleeve is used in corrosive occasions, which can completely withstand corrosive working environment
④ All parts are annealed for durability and no deformation
⑤ Before leaving the factory, we have passed the professional and strict test to ensure the high quality of products

Newest SV-020 Specially designed for packaging machines

Paper-ME 2021 

7/15/2021

How to pump groundwater by steam ejector


The principle of pumping groundwater by steam ejector is to use steam or other power medium to generate strong power through the nozzle of the equipment to suck in the water at the low pressure port, and then phase change occurs. After the water is completely mixed in the mixing section of the equipment, it is discharged from the equipment. Because the speed can change the pressure energy, the drainage pressure can be increased to achieve the purpose of pumping water
Pay attention to the following points in the design of the steam ejector: suction depth and discharge pressure, steam consumption
As a user, steam is more expensive, and the less it is, the more energy saving it will be
From our current experience, generally let customers control in the vertical height within 7 meters, sometimes in 8 meters
Then we consider that the outlet pressure is generally 5 kPa gauge pressure and the corresponding saturated water temperature is 102 ℃
We calculate the amount of steam, in turn, push the outlet temperature of water
If the customer requires the drainage pressure to be higher, we must control the saturation temperature of water when we increase the amount of steam, that is, the amount of steam can not be too much, resulting in water vaporization
According to experience, if customers require high outlet pressure, we usually reduce the height of vertical absorption (1m above the liquid level), so as to increase the outlet pressure
There are many types of working conditions in each group, and we optimize the design around the principle of energy conservation

Steam ejector in burning area of important application

7/13/2021

Analysis of reciprocating vacuum pump


Reciprocating vacuum pump is also called piston vacuum pump, which is composed of crankshaft, piston, cylinder, frame, intake and exhaust valve seat. The crankshaft is driven by the motor to rotate, so that the piston moves up and down in the cylinder. The gas in and out of the intake and exhaust valves will pump out a fixed volume of gas and make it empty.
Reciprocating vacuum pump is the oldest vacuum pump, its advantage is that the gas does not need to contact with other liquids, but it also has the disadvantages of low efficiency, high noise, oil mist, and many vulnerable parts.
In practical application, many fields have been replaced by liquid ring vacuum pump. Compared with reciprocating vacuum pump, liquid ring vacuum pump does not need vacuum pump oil for lubrication, and its structure is relatively simple, and its maintenance cost is relatively low.

vacuum system special for extrusion molding equipment

7/12/2021

Carrying social responsibility and developing environmental protection water ring vacuum pump


With the development of social science, technology and economy, environmental protection has become a problem that must be solved in today's world
As the manufacturer of water ring vacuum pump, we have the responsibility and initiative to research and develop environment-friendly water ring vacuum pump
The environmental protection water ring vacuum pump faces two major pollution problems
1、 Most manufacturers use water ring vacuum pumps to directly discharge water or build large pools. However, the chemical industry and other polluting industries will soon discharge water pollution
2、 Noise pollution
For this reason, we have adopted the combination method to develop hzkb environmental protection water ring vacuum unit, which is composed of zkb water ring vacuum pump, waterway system, vacuum system, cooling system, noise elimination facilities and control system, so as to achieve 100% no leakage. According to different industries, different pump liquid is used, and the use of circulating pump liquid is prolonged by adding neutralizer. As for the noise pollution, we have installed a special noise elimination system at the air inlet and exhaust port, especially for the occasions where man and machine work together

Dry Screw vacuum pump for PE perforated film production 

7/09/2021

Advantages of DC powered micro vacuum pump


The vacuum pump which uses direct current to provide electric energy is called direct current oil-free vacuum pump. DC vacuum pump has 5V, 12V, 24V power supply. The volume of 5V, 12V vacuum pump or 24V DC vacuum pump is very small, so it is called micro vacuum pump. The advantage of DC power supply is to avoid motor drive, so as to reduce the power consumption. The power consumption is weak to MA (MA). The system in the pump is integrated, and the weak current automatic control system is adopted, so that the vacuum pump is completely free of manual control, achieving more accurate and intelligent effect.
The micro DC vacuum pump mainly uses the circular motion of the motor to make the diaphragm inside the pump do reciprocating motion through the mechanical device, so as to compress and stretch the air in the pump cavity with a fixed volume to form a vacuum (negative pressure), which produces a pressure difference between the pump suction port and the external atmospheric pressure. Under the effect of the pressure difference, the gas is pressed (sucked) into the pump cavity, and then discharged from the exhaust port.
Micro vacuum pump has high requirements for air tightness, generally in 10 ^ - 7pam ^ 3 / S (10 minus 7 cubic meters per second) can meet customer requirements for air tightness applications: such as laboratory rare gas analysis, circulation, inspection, etc. The miniature vacuum pump adopts brushless motor to adapt to alternating load, and its service life can be up to thousands of hours (full load, 24-hour continuous test). If it is used intermittently, its service life can be up to 5000-8000 hours.

Oil Booster vacuum system in massive centrifuge to accelerate rockets and send them into space

Liquid Ring Vacuum Pump

7/08/2021

Advantages and disadvantages of vacuum generator and vacuum pump

 


Vacuum generator is widely used in industrial automation, machinery, electronics, packaging, printing, plastic and robot fields. The following taiguan vacuum pump technical team engineers, to share the advantages and disadvantages of vacuum generator and vacuum pump. Hope to help you
The traditional purpose of vacuum generator is to use vacuum sucker to adsorb and transport all kinds of materials. It is especially suitable for adsorbing fragile, soft, thin non-ferrous, non-metallic materials or spherical objects. In this kind of application, a common feature is that the required suction volume is small, the vacuum degree is not high, and it works intermittently.
The vacuum pump is driven by the motor, and the vacuum is generated by the volume change. The commonly used types of vacuum pump in automation industry are rotary vane vacuum pump and piston vacuum pump. Rotary vane vacuum pump and piston vacuum pump are generally small, usually 1-to-1 or small system. Screw type vacuum pump, water ring type vacuum pump and claw type vacuum pump are generally used for system vacuum, even for the vacuum demand of the whole plant. The efficiency of vacuum pump is relatively high, and the power consumption is low, which is very energy-saving.

Dry screw vacuum pump used in penicillin crystallization process

7/06/2021

How to maintain the exhaust filter element of Roots vacuum pump


Once there is a problem in the use of the exhaust filter element, it will affect the work efficiency of Roots vacuum pump. If it is not solved in time, it may affect the normal use of the equipment. In order to avoid this situation, it is critical to do a good job in the regular maintenance of the equipment exhaust filter element. Next, let's take a look at the specific maintenance skills.
1. Cleaning: Roots vacuum pump exhaust filter element is made of special materials, which is easy to damage, so we need to do regular maintenance work. After long-time use of the equipment, some impurities have been left in the vacuum filter element. If not cleaned in time, the filter element may not work normally, reducing the use efficiency of Roots vacuum pump.
2. Replacement: when replacing the exhaust filter element of Roots vacuum pump, we should prepare the water basin and towel in advance. There is a method to replace the exhaust filter element of vacuum pump on the general vacuum pump filter. We must replace it according to the standard method, so as not to damage the filter element of the equipment.
Through the above introduction, we know that we should pay attention to the exhaust filter element when using roots vacuum pump equipment. It is very important to do a good job in daily maintenance.

Liquid ring compressor used in solar power plants

7/05/2021

The difference and connection of vacuum pump oil, compressor oil and refrigeration oil

 

Vacuum pump (mainly refers to mechanical vacuum pump), compressor (air compressor, various gas compressors) and refrigerator have special requirements for lubricating oil. The vacuum pump oil is used in the mechanical vacuum pump in the vacuum system. The compressor oil is mainly used in the lubrication of reciprocating piston type gas compressor, exhaust machine and piston pump's cylinder and piston friction parts and inlet and exhaust valves. When it is used in the automatic oil feeding lubrication system, it also lubricates the compressor's main bearing, connecting rod bearing, crosshead, sliding plate, etc, Low viscosity is also used in all kinds of rotary compressors. Refrigeration oil is mainly used in compressor to compress refrigerant. The three have different uses, but they have many things in common. For example, in addition to the lubrication of the cylinder, piston, valve, bearing, sliding plate and other parts, they also have to bear the sealing function of preventing the compressed gas from channeling between the piston and the cylinder wall, and also have the chemical stability that does not work with the compressed gas. Vacuum pump oil is a special lubricating oil for mechanical vacuum pump. Although there are different types of pumps, the requirements for oil quality are the same. During the operation of the vacuum pump, the oil in the pump cavity on the one hand plays a sealing role, making the pump obtain the necessary vacuum degree; on the other hand, the oil in the pump cavity is affected by friction, temperature and pressure reduction, and the components with high vapor pressure evaporate into the vacuum space, polluting the vacuum system and limiting the improvement of vacuum degree. In addition to proper viscosity, high viscosity index, good oil-water separation and excellent thermal oxidation stability, the most important quality requirement of vacuum pump oil is low saturated vapor pressure and extremely strong limit to ensure high vacuum degree. Therefore, in the production of vacuum pump oil, in addition to selecting the appropriate base oil type, a single narrow fraction oil or pure chemicals should be used instead of blending several fractions as far as possible. For reciprocating compressor, because the discharge temperature of compressed gas is higher than that of suction, it needs better viscosity temperature performance, suitable viscosity and better anti-oxidation stability. It is usually made of deeply refined base oil (preferably naphthenic base oil) and additives with anti-oxidation, corrosion and anti-wear properties (generally, pour point depressant and viscosity reducer are not allowed). For the rotary compressor oil, its working condition and lubrication mode are quite different from that of reciprocating compressor, so it puts forward more stringent requirements on the quality of lubricating oil. In addition to lubricating, cooling and sealing the parts, the rotary compressor oil also plays a prominent role in cooling the compressed gas. In the process of use, the oil mist is separated from the gas after mechanical collision and adsorption medium, The oil is easy to be polluted and aged due to repeated circulation. At the same time, in order to overcome the rotary centrifugal force, the oil needs good adhesion, and the bearing does not need the lubricating oil with too high viscosity. Therefore, the rotary air compressor oil is generally produced with the base oil of deep refining narrow fraction, and the additives of compound antioxidant, antirust, anti-wear, demulsification and defoaming are added. In addition to meeting the above basic requirements, the refrigerator oil should have excellent low temperature performance and good separation from refrigerant or water. Therefore, the general refrigeration engine oil is produced by deep refining low freezing point naphthenic base oil. It is worth noting that when SO2 is used as refrigeration engine oil, the deep refining lubricating oil (such as white oil) without aromatics and sulfur oxides should be selected. Otherwise, gum precipitation will be generated, which will affect the operation of the refrigerator. When chloroethane is used as refrigerant, petroleum will be dissolved, and glycerin and castor oil are generally used for lubrication; When ammonia or carbon dioxide is used as refrigerant, lubricating oil without fatty oil should be used, because fatty oil is easy to emulsify, which is not conducive to water separation and freezing, and the thermal conductivity of fatty oil is small, which leads to the decrease of freezing efficiency.

7/02/2021

Knowledge of vacuum pump pressure parameters

 

Answer the knowledge of measuring various vacuum pump pressure parameters The gauge used to measure the pressure of rarefied gas in vacuum pump is called vacuum gauge or vacuum gauge. It can be divided into absolute vacuum gauge and relative vacuum gauge. The former calculates the pressure directly from the physical quantity measured by itself; The latter must be corrected by absolute vacuum gauge to determine the air pressure. In vacuum technology, Torr is often used as the unit of vacuum degree in addition to the pressure unit PA in the international system of units. 1) 1 Torr is equal to the pressure produced by a 1 mm high mercury column, i.e. 1 Torr = 133.3224 PA. 2) The limit pressure is the value obtained by the equipment manufacturer under the most ideal state of the pump inlet in accordance with the national standard and standard test equipment, instruments and methods before leaving the factory. 3) The final pressure is the lowest pressure that can be reached after the pump and equipment are evacuated after installation. 4) The standard pressure is lower than the atmospheric pressure of the local environment, also known as vacuum. 5) Positive pressure is the relative pressure above atmospheric pressure. 6) Absolute atmospheric pressure. The starting point of absolute zero pressure is called absolute atmospheric pressure.

7/01/2021

Application of industrial vacuum unit


Industrial vacuum cleaning has become an indispensable equipment in the field of industrial production. It has the function of both dry and wet, can absorb liquid and solid, can absorb all kinds of metal, non-metal, oil, water and other particulate pollutants and liquid, can absorb toxic and harmful gases, filter and purify air, clean the environment. In the textile industry can improve the quality of products, in the chemical industry can recycle some expensive catalyst, and as an environmental protection equipment, industrial vacuum cleaner can effectively prevent some occupational hazards, such as welder pneumoconiosis. The following taiguan vacuum pump technical team engineers, to share with you the factory's detailed explanation of industrial vacuum unit dust application. Hope to bring help to you
Vacuum cleaning is to exhaust the air in the suction chamber by rotating the pump blades to produce a certain degree of vacuum. The air pressure in the suction chamber is less than that outside, resulting in the air pressure difference. When the external air is inhaled, it carries the dust into the suction bag inside the machine. The thinner the air in the suction chamber, the higher the vacuum degree, the greater the pressure difference, and the easier the cleaning, So the vacuum reflects the suction in the vacuum cleaner.
There are two types of industrial vacuum cleaner, movable and fixed. Its working principle is to use the motor to drive the high-pressure air pump (or the all-in-one machine) to generate negative pressure in the limited volume, so as to generate suction. After the medium is inhaled, it is filtered through the filter bag or the filter barrel for secondary filtration. The ordinary type can only absorb the dry medium with water content, The wet and dry type can absorb the oil and water produced in the processing. After the installation of exhaust pipe, it can be used to absorb the smoke and gas produced in the production process.
Working principle of vacuum cleaning
1. The principle of dust collection. Driven by the vacuum pump, the vacuum cleaner can discharge the air from the air port at high speed, and at the same time, the air in the vacuum part can be continuously supplied into the pump. It forms a high pressure difference with the outside world. The dirt and liquid of the suction nozzle are sucked into the dust collection part with the air and leaked through the leaker to collect the dirt and liquid into the dust cylinder.
2. The original of the vacuum cleaner. All vacuum cleaners are equipped with an assembled brush head for cleaning floors and carpets. Suction vacuum cleaner will also be equipped with a series of cleaning brush and suction nozzle for cleaning, filtering and purification.
3. Round brush head: also smaller suction nozzle, can do 360 * rotation.
4. Dustbrush: made of long soft bristles.
5. Hose: all suction vacuum cleaners will be equipped with soft and hard hose to connect the cleaning hose and accessories.
6. Flat suction nozzle: also known as gap suction nozzle, is a slender, flat hard suction nozzle. It is especially suitable for cleaning wall edge, radiant heater, corner and shallow and narrow place.
7. Electric brush: cleaning head of internal vacuum cleaner, a special accessory of hybrid vacuum cleaner.

Vacuum pump used in Analytical instrument industry