Can pipeline centrifugal pumps transport high-temperature hot water above 80 ℃?

 

Pipeline centrifugal pump is a type of centrifugal water pump suitable for industrial and urban water supply and drainage, pressurized water supply in high-rise buildings, garden sprinkler irrigation, fire pressurization, long-distance transportation, HVAC refrigeration circulation, bathroom and other cold and warm water circulation pressurization and equipment matching. The liquid that can be transported is also water below 80 ℃ or other liquids with physical and chemical properties similar to water.
Is it possible that pipeline centrifugal pumps cannot transport high-temperature liquids above 80 ℃?
No. Conventional pipeline centrifugal pumps cannot transport high-temperature liquids above 80 ℃. The improved IRG vertical hot water pipeline centrifugal pump and high-temperature pipeline centrifugal pump from Pump Manufacturing Co., Ltd. can achieve the transportation of high-temperature liquids. The IRG type hot water pipeline centrifugal pump produced by Pump Manufacturing Co., Ltd. can transport liquids with a temperature range of less than 120 degrees Celsius, while the high-temperature pipeline centrifugal pump can be used with a temperature range of less than 240 degrees Celsius.
If you are the procurement manager of an enterprise or public institution and want to purchase water pumps that deliver high-temperature hot water, you can contact our online customer service on the official website of Pump Manufacturing Co., Ltd. They will provide you with accurate pump selection and quotation services!

vacuum freeze drying

What are the working characteristics of a horizontal chemical pump for concentrated sulfuric acid?

 

At present, many enterprises have started to use concentrated sulfuric acid horizontal chemical pumps for the transportation of various materials. In actual use, this high-quality product has won high praise from many enterprise users. However, although many users often use this product, they still have no knowledge of its features. So let's take a look at the main working characteristics of an excellent concentrated sulfuric acid horizontal chemical pump?
1. Characteristics of good passability
The easy-to-use concentrated sulfuric acid horizontal chemical pump is very quiet during operation, and unlike other water pump products, it cannot achieve transmission through internal rotating components. Therefore, this product has good passability when conveying materials, and it can reach nearly one centimeter in diameter through the material. At the same time, it has minimal wear and tear during operation, and will not cause damage to the conveyed materials. It is particularly suitable for conveying viscous sludge and has a short service life.
2. Strong self absorption
Due to the strong suction force required by many users when using concentrated sulfuric acid horizontal chemical pumps, manufacturers have particularly strengthened the product's self suction ability when producing this product. This product has strong self priming ability, and even long-term dry suction will not damage the pump body. Once the pump body exceeds the load, it automatically stops working and has good self-protection function.
3. High security features
In recent years, the high-quality concentrated sulfuric acid horizontal chemical pump has been sincerely welcomed by many users because its pipeline is very spacious and suitable for conveying high viscosity products containing particulate matter. At the same time, the concentrated sulfuric acid horizontal chemical pump has high sealing performance, and will not pollute the environment when transporting volatile and Corrosive substance, and has high safety.
The advantages of this product can be seen from the working characteristics of the concentrated sulfuric acid horizontal chemical pump, which is also an important reason why many customers are willing to choose this product. The concentrated sulfuric acid horizontal chemical pump not only has good passability, but also improves the self suction ability of the product to meet customer needs. In addition, this product also has an important working feature, Shanghai Hongdong Pump Industry claims that it will not cause pollution and has high safety.

How To Solve The Problem Of Stopping The Roots Pump When Adding Lubricating Oil?

What factors can cause a decrease in the head of the sewage pump

(1) Motor reversal
Due to wiring reasons, the direction of rotation of the motor may be opposite to the actual requirement of the sewage pump. Therefore, when starting, it is generally necessary to observe the direction of rotation of the sewage pump. If the direction of rotation is reversed, any two wires on the motor terminal should be exchanged.
(2) Impeller channel blockage
If the flow channel of the impeller is partially blocked, it will affect the work of the impeller and cause a decrease in outlet pressure. Therefore, it is necessary to disassemble the pump for inspection and removal of foreign objects. To prevent the problem from recurring, a filtering device can be installed before the inlet of the sewage pump if necessary.
(3) Internal leakage occurs
When the gap between the rotating and stationary parts of the sewage pump exceeds the design range, it will cause internal leakage, which is reflected in a decrease in the discharge pressure of the pump, such as the clearance between the impeller mouth ring and the interstage gap of the multi-stage pump. At this point, corresponding disassembly and inspection should be carried out to repair or replace the components that cause excessive clearance.
(4) Cavitation occurs at the inlet
If the suction pressure of the sewage pump is too low, lower than the saturated vapor pressure of the pumped medium, cavitation will form. At this time, check whether the inlet Plumbing is blocked or whether the opening of the inlet valve is too small, or increase the liquid level of the suction pool.
(5) Speed decrease
The important factors affecting the head of sewage pump are the outer diameter of the impeller and the speed of the pump. When Ceteris paribus, the head of the pump is in direct proportion to the second power of the speed. It can be seen that the speed has a great impact on the head. Sometimes the speed of the pump decreases for some external reason, which will reduce the head of the pump accordingly. At this point, the pump speed should be checked. If the speed is indeed insufficient, the cause should be checked and a reasonable solution should be found.
(6) The operating point shifts towards high flow and low head
In general, centrifugal pumps have a continuous downward performance curve, and the flow rate gradually increases with the decrease of head. During the operation process, due to some reason, the back pressure of the pump decreases, and the working point of the pump passively shifts towards the low head and high flow point with the device curve, which will cause the head to decrease. In fact, this is caused by external factors such as changes in the device, and has no special relationship with the pump itself. At this point, simply increasing the pump back pressure, such as closing the outlet valve a little, can solve the problem.

FJ-300 Molecular Pump Unit

What precautions should be taken when using a self priming magnetic pump

What situations should everyone pay attention to when using self priming magnetic pumps in order to better use them? Many people are curious about this issue. Today, centrifugal pump manufacturers have brought some precautions for the correct use of magnetic pumps. Friends who are not familiar with it should come and take a look.
1. When using, everyone must pay attention that the outlet pipeline of the pump cannot use a check valve. If a check valve must be used, a vent hole should be set at the lower end of the valve.
2. When using a self priming magnetic pump for conveying, the flow rate, head, and self priming height must be within the specified range. If there is a significant difference from the regulations, it is likely to cause the pump to operate improperly due to suction.
3. It is strictly prohibited to transport solid particles or crystalline media.
4. When restarting after a prolonged shutdown, it is necessary to check whether the liquid in the pump body is sufficient before self priming.
5. After the self priming magnetic pump is installed according to the requirements, the power can be switched on, and inching mode is used to check whether the pump rotates normally and flexibly.
6. Self priming magnetic pumps are strictly prohibited from experiencing vacuum suction, so it is necessary to have someone specially monitor the liquid when it is about to be delivered to prevent it from being sucked out.
Did you have some gains after listening to the editor's introduction? If you haven't noticed these issues in your daily life, quickly correct them now, so that you can better use the magnetic pump product and avoid unnecessary malfunctions.

Typical Applications Of Vacuum Technology

Characteristics and classification of clean water pumps

 

Clear water pump is used for conveying clean water and other liquids with physical and chemical properties similar to clean water. It is suitable for industrial and urban water supply and drainage, pressurized water supply in high-rise buildings, garden sprinkler irrigation, fire pressurization, long-distance transportation, HVAC refrigeration cycle, farmland irrigation, bathroom and other cold and warm water circulation pressurization and equipment matching.
Characteristics of clean water pump:
Relatively good performance, with powerful motor device and reasonable body design, high efficiency and low noise. The location of the waterway is treated uniquely, which not only prevents corrosion and rust, but also has good wear resistance.
It has economic, practical, energy-saving design, and reasonable price.
Easy to set up and install, easy to use, with the use of new process design, promoting simple installation and convenient maintenance. It has a self priming function.
Common types of clean water pumps:
Self priming clean water pump: With good water resource quality and relatively fixed operating position, the suction head is within 3.5 meters, and the pipeline is stable. When used for daily water supply in wells and irrigation in plantations, it can reduce the inconvenience of water injection during pumping. The actual pump head is within 22 meters, and the working efficiency of chemical pumps is slightly weaker. When putting into operation for the first time, it is necessary to first inject circulating and emptying water before the water pump can start self priming.
Water injection type clean water pump: Water resources and water bodies have good mobility, and the pipeline is relatively not fixed. The actual pump lift within 2.5 meters is within 32 meters, and the pump flow can be adjusted according to demand. It is suitable for fruit planting professionals to spray pesticides and water supply, with high work efficiency. The suction pipe should ensure good sealing.
Submersible clean water pump: With abundant water resources, the pump has a low head and valves are more suitable for irrigation in fields and plantations that require a large amount of water. Due to the fact that the entire equipment of the submersible pump is placed in the water inlet and the axial water pushing increases, reducing the water flow rate will increase the pump load. Therefore, it is not necessary to install a valve in the drainage pipe of the submersible pump to avoid burning the motor due to excessive resistance when starting the pump due to valve shutdown.

Perflurane FFKM Rubber Seals

Can a deep analysis of the magnetic pump idle or not?

 

With the increasing environmental protection situation, more and more chemical enterprises are required to use magnetic pumps to transport various corrosive materials. As is well known, magnetic pumps cannot idle. As long as they idle for a few minutes, the friction between the shaft and the sleeve inside them will generate extremely high temperatures, quickly wear out graphite bearings and shafts, and even burn out the inner rotor.
In recent years, domestic magnetic pump manufacturers have claimed to be able to produce magnetic pumps that are resistant to idling. Is this true? Is the idle magnetic pump really useful? Can it really idle for a long time?
Today, I will introduce several details to you, hoping to be helpful to users.
At present, there are two main types of idle magnetic pumps produced by some domestic manufacturers. One is to use ceramic rolling bearings to replace the original sliding bearings. When there is a lack of liquid inside the magnetic pump, the friction coefficient of the rolling bearings is lower, and the heat generated is relatively less. Therefore, it can idle without burning the bearings and rotors. The disadvantages of this structure are that it cannot bear high torque, materials with slightly higher density cannot be transported normally, and ceramic bearing balls are fragile.
Another type is the LHC idling fluorine lined magnetic pump developed by Green Ring. This type of magnetic pump is a complete upgrade of the main shaft and shaft sleeve on the basis of the original tradition, and is filled with nano carbon powder technology to achieve the function of idling self lubrication. Relatively speaking, the latter is more technically and theoretically in line with the requirements of idling.

Questions And Answers About Dry Screw Vacuum Pump

The role of underwater pumps in low level transportation

 

When a centrifugal water pump is blocked by waste, it is necessary to pull the pump up in order to sort it, which is very inconvenient and therefore rarely used in practical activities. Therefore, using a submerged pump to carry out low-level transportation solves the problem of low-level transportation.
However, due to the use of a short shaft and the uneven axial force of the centrifugal impeller, all shafts are of a suspended wall structure, resulting in significant stiffness at the end of the centrifugal impeller during flipping. The longer the axis, the greater the stiffness. In order to solve this problem, the equipment on the shaft has bearings. However, because the whole shaft is a Flexible shaft, the bearing continues to suffer from unilateral damage, with a high wear rate, strong bearing shaking, and accelerated damage rate. Therefore, the underwater pump has a high frequency of damage. And the shaft is not suitable for making too long, usually within 2 meters. The bearings of the submerged pump are cooled and polished by water using the medium transported by the pump. If the medium of underwater concrete does not freeze and clean the bearings (such incidents can occur when the pump is empty and the inlet is blocked by dirt), it will cause burning of the tiles or even the motor.
The repair equipment of the submerged pump is very laborious. When transporting corrosive media, it is impossible to complete without lifting items. When a centrifugal water pump is transporting liquid, when the liquid level gauge is less than, it is required to fill the pump in order to produce water. Therefore, it is necessary to install a water pump bottom valve at the pump inlet. Over time, if the bottom valve of the water pump is corroded or stuck, exchange or repair is required, making the application inconvenient. Submersible pumps are generally used to transport cold water and rivers, but when used to transport corrosive liquids such as strong acids and alkalis, they are prone to motor erosion and power loss, making them very unsafe. After all, the submerged pump solves the problem of low level transportation, but it also incurs many difficulties in applications. The column type self priming pump is designed specifically for the transportation of low level liquids due to the aforementioned defects of the submerged pump. It can replace a long axis underwater pump on the road, with a naturally aspirated aspect ratio of up to 8 meters. It can be used as a bottom pump and a cabin cleaning pump in ships.

What Vacuum Units Are Used For Vacuum Distillation And Continuous Distillation In The Oil And Fat Industry