About the problem of water ring vacuum pump can't start the _

water ring pump impeller and the form in the water ring pump body rotation in chamber 1. Water ring gear form crescent work space. From small to large, volume of crescent in the right of formation in the suction chamber. The left half of the volume from large to small new month, constitutes the compression processing ( Corresponding to the exhaust chamber) 。 Described the gas pump through the intake pipe into the inlet port and suction chamber. Further rotation of the rotor, the gas is compressed, and through the vent pipe. Water droplets and the gas from the exhaust pipe into the tank and the water separation from gas and dosing of catheter 9 gases into the atmosphere, water from the pump into the jar, or through the drainage piping installation.

the compression ratio of water ring pump by the pump inlet end position and vent start location to determine. Due to the end of the suction nozzle position determine suction gas suction chamber volume; The beginning of the vent position as compressed volume of exhaust gas. The structure has been identified as the size of water ring pump, compression ratio is obtained.

motor burn out. Mainly for the motor stator coil burned, cause the reason is more, such as the instantaneous electric current too big, motor bearing wear after use time is too long, the bearing friction resistance, motor power increase, cause temperature rise, lead to motor burn down. At this time should first check the motor bearings, check the motor coil again. When bearing damaged, replace the bearing; Motor coil burned, motor maintenance, again around making coil. Bearing and coil was badly damaged, replace the motor.

rotary vane jam. Main show is rotary vane and frictional resistance on the surface of the pump cavity is too big, the motor can't drive the rotor ( Rotary vane) 。 The reason for this is that spiral slice deformation, the rotor in the spring can't reset after open, or the spring pressure and rotary vane own centrifugal force is too large, lead to rotary vane and frictional resistance on the surface of the pump cavity is too large. Rotary vane pumps shall repair and spring at this moment, can't repair, replacement of both.

water ring vacuum pump turning is not smooth. The causes of this situation is generally long unused caused dish end surface rust or because of excessive water temperature caused by the pump cavity scale. Elimination method is to pump cavity filling the 10% oxalic acid covered 30 minutes, and then after loosening the pump cover plate of the car, or is to reduce the working liquid dirt coefficient.

is abnormal vacuum pump motor. If because motor open phase, check the power connector out; If the voltage is not normal because it is over, check the power supply voltage; If because ac contactor is damaged, for ac contactor.

about abnormal voice of water ring vacuum pump. Is usually caused by a startup working liquid full of pump cavity, then open the release is part of the working liquid in the pump outlet of working liquid to reduce part is ok.

water ring vacuum pumps can't form a vacuum. This situation is caused by two reasons, one is no working liquid, then check the working liquid supply situation; Second, steering error, just correct to at this moment.

low vacuum degree of vacuum pump. If due to the smaller pump selection extraction rate is low, has to be replaced under a bigger pumping speed of pump; If because of working liquid are in short supply, will increase the supply; If because working fluid temperature is too high, to reduce the temperature; If because the system leakage, check and plugging; If because the disc or impeller is corrosion, check and replace the wheel or the impeller.

current is big. See whether caused by drainage pipe up line is too high, if is it is ok to reduce drain height; If because working liquid supply is too large, will reduce work fluid supply.

vacuum pump mechanical seal leakage. Is generally not injection working liquid and cooling fluid under the condition of dry running pump, this time will need to replace the mechanical seal, change the operation procedures.

water ring vacuum pump water ring vacuum pump structure is mainly composed of pump body, impeller, end disk, pump body, an end cover,

pump body: inner cavity machining accuracy is not high, but there is on casting blank requirements ( There can be no casting defects such as sand holes, loose) 。 :

impeller casting for whole form, the material is nodular cast iron, stainless steel ( Corrosion resistant) And so on.

can make straight blade ( Limited to a small pump) ; Generally make it forward curved blade, before bending blade is conducive to the stability of the water ring and improve the peripheral speed of water ring, improve the ultimate vacuum pump.

the end disc: open suction vent, communication pump cavity ( The impeller chamber) With the passage of the suction exhaust pump side end cover ( Mouth) 。

pump body end cover: on the one end cover of small pump suction, exhaust, large pump in order to meet the requirements of smoke, displacement, increase the suction area, suction, exhaust channel is open on both sides, with the outside of the pump body on either side of the line will suction, exhaust in parallel, in order to increase suction exhaust passage area.

1, simple structure, manufacturing accuracy is not high, easy to processing.

2, compact structure, the revolutions of the pump is higher, and can generally be motor straight league.

3, the structure of the small size, can obtain large displacement, covers an area of small also.

4, compressed gas is isothermal, basically the process of compressed gas temperature change is very small.

5, because no metal friction pump cavity surface, the pump inside without lubrication, and wear and tear is small.

6, the seal between the rotating and stationary parts can be directly done by water seal, do not need other sealing, etc.