Product Description
Water ring pumps were originally used as self-priming pumps. It is composed of impeller, pump body, suction and exhaust disk, water ring formed in the pump body wall, suction port, exhaust port, auxiliary exhaust valve and so on.
Water ring pump system
Water ring pump system (4 sheets)
In many processes of industrial production, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum regathering and vacuum degassing, water ring pump has been widely used. Because of the rapid development of vacuum application technology, water ring pump has been paid more attention to the crude vacuum acquisition. Because the gas compression in the water ring pump is isothermal, it can remove flammable and explosive gases, in addition to the removal of dust, water containing gas, therefore, the application of water ring pump is increasing.
The pump body is equipped with an appropriate amount of water as the working liquid. When the impeller rotates clockwise, the water is thrown around by the impeller. Due to the centrifugal force, the water forms a closed ring of approximately equal thickness, which is determined by the shape of the pump cavity. The lower inner surface of the water ring is just tangent to the impeller hub, and the upper inner surface of the water ring is just in contact with the top of the blade (in fact, the blade has a certain insertion depth in the water ring). At this point, a crescent-shaped space is formed between the impeller hub and the water ring, and this space is divided into several small cavities equal to the number of blades by the impeller. If the lower part of the impeller 0° as the starting point, then the impeller in the rotation of 180° before the volume of the small cavity from small to large, and connected with the suction port on the end face, at this time the gas is inhaled, when the end of the suction small cavity is isolated from the suction port; When the impeller continues to rotate, the small cavity from large to small, so that the gas is compressed; When the small cavity is connected with the exhaust port, the gas will be discharged from the pump.
To sum up, the water ring pump relies on the change of the pump chamber volume to achieve suction, compression and exhaust, so it belongs to the variable-volume vacuum pump.
The impeller is installed in the pump body eccentrically. When the impeller rotates, the water entering the pump body is thrown around by the impeller. Due to the centrifugal force, the water forms a closed water ring of equal thickness similar to the shape of the pump cavity. The upper inner surface of the water ring is just tangent to the wheel hub of the impeller, and the lower inner surface of the water ring is just in contact with the top of the blade. At this point, a crescent-shaped space is formed between the impeller hub and the water ring, and this space is divided into several small cavities equal to the number of blades by the impeller. If the upper part of the impeller 0 ° as starting point, and then in front of the rotating impeller, 180 °, the small cavity volume gradually changed from small to big, the pressure reduced constantly, and the mines with suction mouth of the suction or discharge tray, when the pressure inside the small cavity space is less than the pressure of the pump container, according to the principle of balance of gas pressure, the gas is pumped continues to be draw in small cavity, is in the process of suction. When the suction is completed with the suction port isolation, the volume of the small chamber is gradually decreasing, the pressure is increasing, at this time is in the compression process, when the compressed gas reached the exhaust pressure in advance, from the auxiliary exhaust valve in advance. From the section, interlinked with vent small cavity volume further decrease the pressure rise further, when the gas pressure is greater than the exhaust pressure, the compressed air to escape from the vent is in the process of the continuous operation of the pump, continuously carrying on the suction, compression, exhaust process, so as to achieve the purpose of continuous extraction.
advantages
Simple structure, low manufacturing accuracy requirements, easy to process.
Compact structure, high pump revolution, generally can be directly connected with the motor, no reduction device. Therefore, with small structure size, large displacement can be obtained, and the floor area is also small.
Compressed gas is basically isothermal, that is, the temperature of compressed gas changes very little.
Because there is no metal friction surface in the pump cavity, there is no need to lubricate the pump, and the wear is very small. Sealing between rotating parts and fixed parts can be completed directly by water sealing.
Even suction, stable and reliable work, simple operation, convenient maintenance.
Common faults and troubleshooting methods
First, vacuum pump degree is not enough
Possible causes: Insufficient motor power supply leads to insufficient speed. Insufficient water supply; The gap between the impeller and the distribution plate is too large; Mechanical seal damage resulting in water leakage; Impeller wear too much; Circulating water can't be drained.
Elimination method: check whether the power supply voltage is within the rated voltage range of the motor; Increase water supply (must be controlled in the correct range, otherwise it will lead to motor overload heating); Adjust the clearance between impeller and distribution plate (generally 0.15-0.20mm); Replace the mechanical seal; Replace the impeller; Check the water outlet piping.
Two, can not start or start the noise
Possible causes: The power supply voltage of the motor is insufficient. Motor phase failure operation; The pump is not used for a long time, resulting in corrosion; Pump suction debris; Impeller drag distribution plate.
Troubleshooting method: Check whether the power supply voltage is too low; Check whether the motor wiring is firm; If the pump does not lead to corrosion for a long time, you can add a rust remover or open the pump cover to artificially remove rust; Open the pump cover to remove debris; Adjust the distance between impeller and distribution plate.
Three, motor overheating
Possible causes: excessive water supply leads to motor overload; Motor phase loss; The vent is blocked; The impeller drags other parts.
Elimination method: reduce the water supply to the normal range (refer to the pump's operating instructions for liquid supply); Check whether the wiring is firm; Check the exhaust port; Open the pump cover to adjust the clearance between impeller and other parts.
Four, insufficient flow
Possible causes: Pipe leakage; Resistance loss increases;
Elimination method: check the mechanical seal at the joint; Check pipes and check valves for faults.
Regular maintenance
(1) In normal work, attention should be paid to check the working and lubrication of bearings. The temperature (bearing and outer circle) is generally 15ºC ~ 20ºC higher than the ambient temperature, and the highest temperature is not allowed to exceed 30ºC ~ 35ºC, that is, the actual temperature at the outer circle of the bearing frame should not exceed 55ºC ~ 60ºC; The normal working bearings should be refuelled 3 ~ 4 times a year, the bearings should be cleaned at least once a year, and all the lubricating oil should be replaced.
(2) In normal work, the packing should be pressed regularly. If the packing cannot guarantee the required sealing performance due to wear, the new packing should be replaced. If the mechanical seal is used and leakage is found, check whether the static and static ring of the mechanical seal is damaged or the auxiliary seal is aging. In such cases, new parts should be replaced.
(3) In the appearance of special sound, can remove the pressure plate on the 2 ends of the cover, check whether the 2 end faces of the impeller and the distributor are damaged, but also check whether the exhaust valve plate is normal.
Selection criteria
1, water ring pump vacuum requirements unit 2, water ring pump pumping speed requirements 3, water ring pump operating conditions 4, water ring pump motor power 5, water ring pump voltage requirements 6, water ring pump material requirements.
Matters needing attention
Remove the
Before disassembly, the water in the pump cavity should be released, and the gas-water separator and suction tube parts should be removed. In the process of disassembly, all the gaskets should be carefully removed. If there is damage, the same gasket should be replaced. The pump shall be removed from the rear end (without coupling or pulley end) in the following order:
(1) Remove the rear shaft bearing cap, loosen the 2 round nuts with hook hand, remove the bearing seat and bearing;
(2) Loosen the packing gland nut and remove the packing gland;
(3) remove the hexagonal bolt connecting the pump cover and the pump body and the bolt at the bottom foot of the pump cover, remove the back end cover;
(4) remove the pump body;
(5) Loosen the foot bolt at the other end;
(6) remove the coupling and remove the key on the shaft;
(7) Remove the bearing parts before;
(8) Remove the front end cover and remove the shaft and impeller together.
After disassembly, the parts should be coated with oil on the mating surface, thread should also be coated with oil to protect.
|
US $500 / Set | |
1 Set (Min. Order) |
###
| After-sales Service: | One Year |
|---|---|
| Warranty: | One Year |
| Oil or Not: | Oil Free |
| Structure: | Rotary Vacuum Pump |
| Exhauster Method: | Positive Displacement Pump |
| Vacuum Degree: | Low Vacuum |
|
US $500 / Set | |
1 Set (Min. Order) |
###
| After-sales Service: | One Year |
|---|---|
| Warranty: | One Year |
| Oil or Not: | Oil Free |
| Structure: | Rotary Vacuum Pump |
| Exhauster Method: | Positive Displacement Pump |
| Vacuum Degree: | Low Vacuum |
How to check the vacuum pump
A vacuum pump is a machine that draws gas molecules from a volume and maintains a partial vacuum. Its main job is to create a relative vacuum within the stated capabilities. If your vacuum pump isn't working properly, it may need service. Read on to learn more about the types of vacuum pumps and how to check them. 
Principle of industrial vacuum pump
Industrial vacuum pumps are used in industrial processes that require vacuum. These pumps are designed to generate, improve and maintain vacuum. Learn about the different types of industrial vacuum technology. You can start by reading about the most common types of industrial vacuum pumps. These pumps can be used in a variety of industrial processes from cleaning to manufacturing.
Regardless of the technology used to manufacture these pumps, the basic principles behind their operation are the same. The speed and mass flow of the pump will determine its capacity and suitability. A faster flow rate will minimize the time it takes for the machine to empty. Another important factor to consider is the type of vacuum you need.
A liquid ring vacuum pump is an industrial pump that uses a ring of liquid to form a seal. This type of pump is best suited for applications with high vapor loads and high liquid carry-over. Liquid ring vacuum pumps can be divided into two categories: liquid ring vacuum pumps and scroll vacuum pumps.
Industrial vacuum pumps work by removing gas molecules from a chamber. The partial vacuum created allows material to flow through the void. As more molecules are removed, the pressure in the chamber decreases, releasing energy that can be used for a variety of different purposes.
The most common use of industrial vacuum pumps is for electric lights. In these lamps, a vacuum pump removes the gas, causing the bulb to light up. Energy from the vacuum is also used in aircraft to power instruments. In addition to powering industrial vacuum cleaners, they are used in a variety of other environments.
High-performance industrial vacuum systems require specific materials that can withstand extreme pressure. This means that the materials used in these systems need to be properly checked. They must also be free of organic debris and other contaminants before they can be safely placed in the chamber.
Types of vacuum pumps
There are various types of vacuum pumps. Which one to choose should depend on the purpose of the pump and the degree of vacuum that must be achieved. It is mainly divided into three categories: rough vacuum or low vacuum, high vacuum and ultra-high vacuum. They all have varying degrees of scarcity. The higher the pressure, the fewer molecules per cubic centimeter. This in turn improves vacuum quality.
The vacuum pump is critical to the operation of the vacuum system. These devices are divided into three main categories according to their working pressure range. These pumps have different characteristics and technologies that make them ideal for specific applications. The choice of vacuum pump required for a particular application depends on how much vacuum you need, and how much power you are willing to spend.
Vacuum pumps are used in a variety of industrial and scientific processes. Their main function is to remove gas molecules from the sealed volume, leaving a partial vacuum. There are many different types of vacuum pumps, including rotary piston, liquid ring and scroll vacuum pumps. In addition, turbomolecular pumps are used.
Dry vacuum pumps are more expensive than wet vacuum pumps. Wet vacuum pumps use oil as their lubricating fluid. Different types of oils are used depending on the application. Some wet pumps have additional features, including contaminant filtration. However, wet systems have one major disadvantage: the contact between oil and fluid. To avoid this, oil separators are usually used.
There are several different types of vacuum pumps. The basic type is the positive displacement pump. It operates by expanding the chamber and removing gas molecules. The intake valve draws fluid into the chamber, while the exhaust valve opens when the chamber is at maximum expansion. This cycle repeats several times per second. Positive displacement pumps are often used in multistage vacuum systems. 
Maintenance of vacuum pump
Regular maintenance is very important to ensure the long-term effective use of the vacuum pump. One way to ensure proper pump performance is to change the oil regularly. Pump oil may be contaminated by vapor condensation. To avoid this problem, close the inlet valve for 20 to 30 minutes before applying vacuum. It is also important to install an inlet cold trap to protect the pump from corrosive vapors.
Another way to prolong the life of your vacuum pump is to periodically remove any solvent in it. This step reduces internal corrosion and prevents premature pump failure. During maintenance, be sure to disconnect the power supply to the vacuum pump. After cleaning, store it in a dry and safe place. The pump should also be disposed of in accordance with local regulations.
Vacuum pumps may require frequent oil changes, especially when used in wet chemistry. The standard rule is to change the oil after 3,000 hours of use, but some pumps require more frequent oil changes. It is also important to clean the oil regularly, as dirty or discolored oil can affect the performance of the pump.
Vacuum pumps are often equipped with on-site glass to allow the user to visually check the oil level. Clean oil will appear transparent, while dirty oil will appear darker. Frequent oil changes are essential, as oil changes can help spot various potential problems. Changes in vacuum pump performance or strange noises are also good indicators of a problem.
After an oil change, the vacuum pump should be cleaned thoroughly with a soft cloth and mild degreaser. Oil changes should take less than ten minutes, and they will extend the life of your equipment. Additionally, the outside of the pump should be wiped with a cloth or rag.
The pump must be properly vented to avoid internal corrosion. If possible, place the pump away from hot equipment or rooms. Overheating can reduce the viscosity of the oil and cause premature pump failure. In addition, it can lead to overwork of other expensive scientific equipment. Heat can also cause cracked rubber parts and oil leaks. 
Signs of damage to the vacuum pump
A bad vacuum pump can cause a variety of automotive problems, including poor fuel economy, difficult braking, undercarriage oil leaks, and faulty air conditioning. If any of these problems occur, call a mechanic to check your vehicle's vacuum pump. You can also check the air conditioner and brake pedal to see if they are working properly.
A loud noise from the pump can also be a symptom of a malfunction. These noises are often caused by the aging and accumulated wear of specific components. If this is the case, the diaphragm, valve plate or seals may need to be replaced. However, if the noise is coming from bearings or other areas, more extensive repairs may be required. Additionally, dust and other contaminants can enter the pump chamber, which can degrade pump performance.
If the vacuum pump won't start, it could be a blown fuse or a power or voltage problem. Other common causes are flow restrictions or improper installation at the entrance. Also, the vacuum pump may be damaged or the capacitors may be of poor quality. It's not always easy to tell if a vacuum pump is leaking oil, but a greasy transmission can indicate a vacuum pump failure.
A leaking vacuum pump can also hiss when the car's engine is running. If you hear it, check the hoses and connections to make sure there are no leaks. A vacuum leak may indicate a faulty vacuum pump, so you need to replace it as soon as possible.
Checking end pressure is easy, but a pressure gauge can also serve as a sign. You can also check for pump vibration by running a short procedure. Excessive vibration can be subtle, but it can greatly affect your process. If you notice excessive pump vibration, you should contact a professional immediately.
Poor pump performance can cause many problems for your company. A bad vacuum pump not only wastes material, it also damages your tools and reputation.
editor by czh