What problems can arise if the oil change of a screw vacuum pump is not done correctly?

You can install a sensor package on your vacuum pump specifically designed to collect and process data to monitor the operating status of your vacuum pump anytime, anywhere. Busch Vacuum's monitoring equipment (OTTO) can reduce your production costs and downtime while keeping a complete picture of your production. Based on the analysis of the data, we are responsible for preventive maintenance and dispatch technical service personnel when needed.

If the screw vacuum pump wants to make it long-term application, its maintenance work is indispensable, in which the oil change is the basis of this work, but after the oil change, there will be a series of problems, the following will give you a detailed introduction to the common problems after the oil change of machinery and equipment:

1. Long-term air extraction at the air inlet should be prevented in many ways.

Second, the vacuum value is slightly lower

1. Whether other lightweight concrete liquids are infiltrated into the pump cavity and oil, and run for a period of time as much as possible after changing the oil.

2. Check whether there is steam leakage in each sealing part, and check the measuring instrument.

3. Fog condition of the exhaust port: check whether the air inlet and part of it have steam leakage.

Fourth, the exhaust port has an oil pump condition: too much oil is added, reduce the amount of oil added, and the air inlet is pumped for a long time, which should be prevented in many ways.

Screw vacuum pumps are used in the company industry with high requirements for cleaning vacuum pumps, so the relevant workers should master the relevant professional knowledge when they actually operate the machinery and equipment, and prepare in advance to prevent the problem of changing the oil, so as to reduce the extreme development trend of the problem.

IfScrew vacuum pumpIncorrect oil changes can lead to the following three problems:

1. The air inlet is pumped for a long time;

2. The vacuum degree is low, so it is necessary to check whether the light liquid is mixed in the pump chamber and the oil, check whether there is air leakage in each sealing part, and calibrate the detection instrument;

3. There will be oil injection at the outlet, which may be related to too much oil, and the amount of oil added needs to be reduced. Pronock...

If there is oil backing in the vacuum pump, it may be caused by oil contamination inside the vacuum pump or insufficient lubricating oil. You can try the following workarounds:

Check the inside of the vacuum pump for oil contamination and if so, clean the oil.

Check whether the lubricating oil of the vacuum pump is worn out too much, and if so, you need to add a new lubricating oil.

Check that the lubrication system of the vacuum pump is working properly, if not, the lubrication system may need to be repaired or replaced.

If none of the above measures can solve the problem of oil backing, a more in-depth inspection and repair of the vacuum pump may be required.

Hello for you to find the answer: No. Replacing with other oil products will cause the performance of the vacuum pump to decline, and the different oil viscosity and oxidation resistance will also damage the vacuum pump, thereby increasing the maintenance cost of the vacuum pump and reducing the service life of the vacuum pump, so it cannot be replaced by other lubricating oils.

Vacuum pump oil has excellent corrosion resistance, and can also make the vacuum pump less easy to rust, because the special properties of this oil form a layer of film on the surface of the real and bad Cryptosato empty pump, which fully protects the vacuum pump, and due to the particularity of the oil, the vacuum pump oil can also easily separate the water to achieve the purpose of vacuum. If renting mine is helpful to you, please give a thumbs up, thank you!

Summary. Hello dear. OK. The oil pump can pump oil in a vacuum situation.

Hello dear. OK. The oil pump can pump oil in a vacuum situation.

The use of vacuum pump oil and precautions requirements 1: the pump oil in the sealing vacuum pump accessories should have a suitable viscosity, which can make the vacuum pump start quickly at low temperature, the pump oil can have good sealing at high temperature, and the pump oil in the pump has a low temperature rise. It does not contain light volatile components, which reduces the oil return rate of the vacuum pump belt during application.

Requirement 2: Saturated vapor pressureSaturated vapor pressure is one of the key indicators of pump oil. In a closed container at a constant temperature, the pressure when the vapor-liquid phase reaches dynamic equilibrium is called saturated vapor pressure.

The saturated vapor pressure of the oil should be kept as low as possible. At the maximum operating temperature of the pump, the saturated vapor pressure should be low enough and below the limit pressure of the vacuum pump rule. At least kPa should be reached at 60 temperature (due to the temperature rise of 20 years, the saturated vapor pressure is about ** order of magnitude).

Requirement 3: Ultimate full pressure and ultimate partial pressureUltimate full pressure: The sum of the pressure generated by all the material files (gases) of the vacuum pump is measured by a Pirani meter or a thermocouple vacuum gauge.

At present, foreign countries pay attention to the test index of full pressure. Limit partial pressure: The ultimate air partial pressure of the pump measured by a mercury compact vacuum gauge (McTelemeter), the partial pressure of the two-stage rotary vane pump should be 6 10-5kpa

The difference between the ultimate full pressure and the limit partial pressure is requested to be no more than an order of magnitude. The greater the difference between the two, the more volatile components are contained in the pump oil and the worse the properties of the oil. Requirement 4:

Smoothness of pump oil in vacuum pump parts, friction wear of friction surface, fatigue and wear of appearance, corrosion and wear, etc.

Replace the vacuum pump oil and oil filter, and change the oil in time if the oil is contaminated and blackened, emulsified or thickened. At the same time as changing the oil, the oil filter should be replaced, and the pump should be cleaned before adding new oil.

Cleaning and oil change steps: stop the pump to release the hot oil, screw on the oil drain plug, run for 5-10 seconds, drain the oil, inject the cleaning oil to 3 4 places of the height of the oil window, run the vacuum pump for 5-10 minutes, stop the pump and discharge the oil. If the oil released is still relatively turbid and does not meet the requirements, repeat the steps until the oil released is transparent, spin on the oil drain plug and run for 5-10 seconds, drain the oil, and then inject the specified new oil.

Brother Filter].

The method of changing the oil is carried out in the following three steps.

1. First open the refueling plug, then unscrew the oil discharge plug, use the container to receive the discharged waste oil, pay attention not to pollute the environment with waste oil during operation, and screw on the oil discharge plug after the waste oil is discharged.

2. Add clean vacuum pump oil to the oil level slightly exposed sight glass, jog the vacuum pump to run several times to drain the oil, and then, screw on the oil discharge plug and re-add the clean vacuum pump oil to 1 2 places of the pump's oil level indication line (the upper and lower limits on the cast line on the pump body shell and the signage), refer to the vacuum pump instruction manual for specific operations.

3. Start the vacuum pump for testing, and judge its vacuum pumping performance after the pump temperature rises. If the vacuum level still does not meet the specified value, it may be due to sediment such as sludge or mechanical failure in the pump.

Troubleshooting method of problems caused by vacuum pump after changing vacuum oil:

1. There is oil injection at the air outlet of the pump: the vacuum pump adds too much oil to reduce the amount of oil added; Prolonged pumping of air intakes should be avoided.

2. Fogging at the air outlet of the pump: Check whether there is air leakage at the air inlet and other parts.

3. Low vacuum: Whether other light liquids are mixed into the pump cavity and lubricating oil, the engineer of Halode Vacuum Technology reminds that after the new oil change, it should be properly operated for a period of time to check whether there is air leakage in the sealing parts of the pump.

4. Calibrate the detection instrument. ——Howchot vacuum pump oil**.

The main common problems are:

1. There is oil injection at the pump outlet: too much oil is added, reducing the amount of oil added; Prolonged pumping of air intakes should be avoided.

2. Fogging at the air outlet of the pump: Check whether there is air leakage at the air inlet and other parts.

3. Low vacuum: Whether other light liquids are mixed into the pump cavity and oil, after the new oil change, it should be properly operated for a period of time to check whether there is air leakage in the sealing parts of the Pronuoke pump.

4. Calibrate the detection instrument.

Yellow、The color of the vacuum pump oil will deepen after a period of time。 Hochod Vacuum**: A good vacuum pump oil, first of all, the color is pale yellow from a distance, and transparent, (which means yellow, but it does not obstruct the line of sight) and another, when pouring oil in the sun, it turns pale blue.