The vacuum degree of the vacuum pump is unstable, and the vacuum pump cannot pump a clean vacuum?

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It depends on what kind of vacuum pump it is, 1Check whether the pumping system is leaking; 2. Check whether the pump body is leaking; 3. Check whether the temperature of the circulating water is too high, 4. Whether the temperature of the suction gas is too high; 5. Whether the impeller of the vacuum pump is in good condition and whether the equipment is damaged. That's all I need to think about for now.

Don't know which vacuum pump you're using? Water jet pumps and water ring vacuum pumps are commonly used. The water jet pump relies on a large amount of water to drive the gas, and the water temperature is easy to rise, so the vacuum degree is unstable, and the vacuum degree of the water ring vacuum pump is relatively stable, and the temperature of the circulating liquid is controlled below 40 degrees.

What vacuum pump? What process? How does it work?

Don't know what kind of vacuum pump you have, it's hard to say right now?

Hello, the reasons and solutions for the vacuum pump not vacuuming: 1. Whether the power cord of the vacuum pump is reversed or missing phase, the motor is not turned right, and it is overhauled. 2. The pipeline between the container and the vacuum pump is blocked or leaked, whether the air filter element is blocked, and the garbage needs to be cleaned up for a long time.

3. The fragmentation of the blades of the vacuum pump will not produce vacuum, and the blades need to be replaced. 4. Check the vacuum pump oil, the vacuum pump oil should be injected in an appropriate amount, and it should be replaced after a long time. The use of other oils is strictly prohibited.

5. The sealing degree of the suction system does not meet the requirements, and the leakage of the container is too large. Check for exclusions. 6. The pump oil is polluted and needs to be changed.

7. The oil filter in the pump is blocked, which causes the oil circuit of the compressed oil injection system to be poor and the oil supply is insufficient, resulting in the poor sealing of the pump body, and the internal oil filter needs to be cleaned; The oil distributor valve is deformed, worn or damaged, which can also lead to insufficient oil supply, so the oil distributor valve should be checked and replaced; Long-term use causes the wear of the rotary vane of the vacuum pump or the insufficient spring tension in the rotor, resulting in the poor isolation of the suction chamber and the exhaust chamber, resulting in the deterioration of the vacuum pumping performance of the vacuum pump. At this time, the rotary vanes and springs should be replaced, and the rotor and pump chamber should be cleaned; Check the exhaust valve, ** whether its action is out of order, resulting in poor exhaust, and replace the exhaust valve if necessary.

Reason: Some vacuum pumps cannot work at atmospheric pressure and need to be pre-vacuumed; Some vacuum pump outlet pressure is lower than atmospheric pressure, and a backing pump is required, so the pumps need to be combined.

Solution: Check whether the intake and exhaust ports are connected wrongly, and if the three-phase pump is reversed, see if the motor is reversed. If the vacuum pump motor is still good. And if it is a pump with different working methods, the reasons for not working normally are still different, and it cannot be generalized.

Due to the selective pumping of vacuum pumps, the selection of one pump can not meet the pumping requirements, and several pumps need to be combined to complement each other to meet the pumping requirements. For example, the titanium sublimation pump has a high pumping speed for hydrogen, but cannot pump helium, and the three-pole sputtering ion pump has a certain pumping speed for argon.

There are several reasons that should be considered when something goes wrong:

1. First of all, consider whether it is the reason why the speed of the rent is too low, and you can adjust the speed appropriately to see if there is any improvement;

2. If there is no problem with the speed, consider whether the rotor is worn due to long-term operation and cannot reach the vacuum degree required by the width, Jian Heliang can disassemble the pump casing to check the rotor condition;

3. Consider the factors of seal leakage.

1. Use the piston in the pump chamber to do reciprocating motion to inhale, compress and discharge the gas.

2. The piston in the pump chamber is used to rotate the gas in, compress and discharge.

According to the working principle of vacuum pumps, vacuum pumps can basically be divided into two types, namely gas capture pumps and gas transfer pumps. It is widely used in metallurgy, chemical industry, food, electronic coating and other industries.

Summary. Dear, very happy for your problem, vacuum pump vacuuming is good and bad, help you find out: the reason why the vacuum pump is good and bad:

1. The temperature of the pumped gas is too high. Allow the gas to cool before entering the vacuum pump. 2. Suction of hard objects to wear the vacuum pump body.

The vacuum pump must be disassembled, hard objects removed, scratched parts repaired or replaced. I hope mine can help you and I wish you good health and a happy mood!

Dear, I am very glad for your problem, the vacuum pump is good and bad when it is dry, and it will help you inquire about the reasons for the failure: the reason why the vacuum pump is good and bad: 1. The temperature of the pumped gas is too high.

Allow the gas to cool before entering the vacuum pump. 2. Suction of hard objects to wear the vacuum pump body. The vacuum pump must be disassembled, hard objects removed, scratched parts repaired or replaced.

I hope mine can help you, I wish you good health and a happy mood!

First, the temperature of the vacuum pump is too high: 1. The temperature of the pumped gas is too high. Allow the gas to cool before entering the vacuum pump.

2. Suction of hard objects to wear the vacuum pump body. The vacuum pump must be disassembled, hard objects removed, scratched parts repaired or replaced. 3. The cooling water of the vacuum pump flow rate is not enough.

The cooling water must be flowed up. 4. Improper installation causes the rotor shaft to move, resulting in wear on one side. It must be disassembled and reassembled during inspection.

Bi Chain. Second, there are problems with vacuum pump oil 1, the oil level is too low. The oil should be added to the centerline of the mimeograph machine. 2. Oil pollution, oil quality deterioration, must be replaced with new oil.

3. The oil grade does not match. The specified grade of vacuum pump oil should be replaced. 4. The oil circuit is not passable, and the oil volume in the vacuum pump cavity is insufficient.

The oil circuit and inlet of the oil valve must be checked to keep the oil circuit clear. 3. Vacuum pump leakage problem: 1. Air leakage of sealing ring.

Check the sealing condition of all seals and replace the damaged seals2The gasket should be damaged: or not tightened.

The gasket should be changed and the gas ballast valve should be tightened; 3. The exhaust valve plate is damaged and the seal is poor. The disc needs to be replaced; 4. The interference amount of the inner diaphragm of the vacuum pump is too large when it is pressurized, resulting in deformation and air leakage of the vacuum pump cavity. The vacuum pump chamber needs to be trimmed or replaced.

5. Poor oil seal at the end of the vacuum pump leads to air leakage. The end cap should be removed to inspect for debris or irregularities and cleaned or repaired. 6. The rotor spring is deformed or broken, and the rotor is not working properly.

The spring deformation must be overhauled or replaced to allow the rotor assembly to rotate correctly. 7. The air intake filter is blocked. The filter must be removed and cleaned before installation.