Vacuum pump vacuum low _ cause analysis and adjustment method

The reasons for the low vacuum degree of vacuum pump, vacuum water pump itself leak

1. Seal leakage. Shall check the sealing of all sealing parts, and replace the damaged seal ring.

2。 The gas ballast valve gasket damage or not tighten. Shall replace the gasket and tighten the gas ballast valve.

3。 Exhaust valve damage, seal, valve plate should be changed.

4。 The diaphragm pressure into the vacuum pump, the interference is too large, lead to deformation of the vacuum pump cavity and leakage. Vacuum pump room should be trimmed or replacement.

5。 Due to the vacuum pump on the end face seal bad leakage. Should remove the end cover to check whether there is debris or uneven, and carry on clean or repair.

2, there is something wrong with the vacuum pump oil

1. Oil if the oil level is too low, should add the oil mark on the mid-line of engine oil.

2。 Oil contamination, deterioration of oil. A new engine oil should be replaced.

3。 If the oil level does not match, should replace the specified levels of the vacuum pump oil.

4。 Oil block, vacuum pump cavity not keep proper amount of oil. Check the oil channel and the oil inlet valve, to keep clear of the oil channel.

5。 Air inlet filter clogging. Before installing the filter should be unloaded and cleaning.

6。 The rotor of the spring deformation or fracture, as well as the rotation of the rotor, are ineffective. Spring deformation should be renovated or replaced, in order to make the rotor rotate the good components.

7。 Vacuum pump temperature too high.

1) Pumping gas temperature is too high. Before entering the vacuum pump, let gas cooling.

2) Leads to the vacuum pump body wear suction hard objects. Should remove the vacuum pump to remove hard and scratch repair or replacement of parts.

3) The vacuum pump cooling water flow rate. Cooling water flow rate should be increased.

4) Improper assembly, lead to the rotor axial displacement, resulting in the lopsided wear. Check should be apart and reassembled.

8。 Due to poor processing or wear and tear, matching gap is too big. Check the vacuum pump cavity, rotor, the space between the vane and end cover, and the accuracy of shall, in accordance with the provisions of repair or replacement.

9。 Friction pump in the vacuum pump will generate heat during operation. Temperature is too high, so that the vacuum pump oil is thinning and sealing performance deterioration. Cooling water or use electric fan cooling. At the same time, check the relevant parts of clearance and according to the specified accuracy requirement for repair or replacement.

vacuum pump vacuum degree adjustment

many mini vacuum pump does not have the function of the vacuum degree adjustment. They can only by increasing the valve to adjust. For example, precision pressure relief valve connected to the pump pumping. High vacuum degree, the open valve, vacuum degree reduced. The fine pressure reducing valve also to specify container channel directional emission of poisonous gas and so on, this is the function of many valves that are not. Can use intelligent vacuum pump. Button is used to set the negative pressure pump, the LCD panel shows negative pressure. There is also a knob, can will flow control for large and small. The smart vacuum pump, also known as ac vacuum pump and vacuum pump.

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