Screw pump troubleshooting approach

First make sure that other debris does not enter the pump body

If there is solid debris into the pump will screw the rubber material stator damage, it is important to ensure that debris does not enter the cavity of the pump, and some installed in the pump before the grinder, and some grille installation Or filter, blocking debris into the screw pump, grill should be promptly cleared to avoid clogging.

The second to avoid the screw pump in the case of broken use.

Screw pump is never allowed to run in the case of broken material, once occurred, the rubber stator due to dry friction, instantaneous heat generated and burned, so the grinder intact grille smooth is one of the necessary conditions for the normal operation of the screw pump is In this case, some screw pumps are still installed in the pump body off material shutdown device, when there is a broken material, due to its self-priming screw pump features, the cavity will have a vacuum, the vacuum device will stop the screw pump operation.

The third to maintain a constant outlet pressure

Screw pump is a positive displacement rotary pump, when the outlet is blocked, the pressure will gradually increase, so that the pressure exceeds the predetermined value. At this time the motor load increased dramatically. Transmission machinery related parts load will exceed the design value, severe motor burn occurs, the transmission parts broken. In order to avoid damage to the screw pump, generally installed at the outlet of the screw pump bypass relief valve to stabilize the outlet pressure to maintain the normal operation of the pump.

Fourth screw pump speed of rational choice

Screw pump flow and speed into a linear relationship, relative to the low-speed screw pump, screw pump with high speed although it can increase the flow and lift, but the power was significantly increased, high speed accelerated wear between the rotor and stator, must make Early failure of the screw pump, screw rotor and high-speed fixed rotor length is very short, easy to wear, thus shortening the life of the screw pump.

Through reducer or stepless speed regulation mechanism to reduce the speed, the exploration speed maintained at a reasonable range of three hundred revolutions per minute, and high-speed operation of the screw pump, the service life can be extended several times.

Of course, there are many ways to maintain the screw pump which requires us to pay more attention when it is used. As long as careful observation will have a good maintenance of the screw pump.

Screw pump failure how to deal with it? This article will introduce the screw pump troubleshooting.

1, the pump vibration or vibration:

Causes: Pump installation is not strong or the pump is installed too high; Motor ball bearings damaged; Pump spindle bending or not with the motor spindle, not parallel and so on.

Treatment: install a steady pump or reduce the installation height of the pump; replace the motor ball bearings; correct the bending of the pump shaft or adjust the relative position of the pump and the motor.

2, drive shaft or motor bearing overheating:

Reason: lack of oil or bearing rupture.

Approach: add oil or replace the bearing. Valve import pump industrial washing machine

3, the pump does not water:

Reason: pump and suction pipe did not fill the diversion; moving water level lower than the pump drainage pipe; suction pipe rupture.

The sealing surface between the screw and the housing is a curved surface. There is a non-sealing area such as ab or de on this surface and a number of triangular notches abc, def are formed with the groove portion of the screw. These triangular notches form a passage for the liquid so that the driving screw groove A and the Moving screw groove B, C connected. The grooves B, C, along with their spiral around the back, respectively, and the back of the grooves D, E communicated. Since there are also triangular notches a'b'c 'similar to the front face on the sealing surfaces where the grooves D, E engage with the groove F (which belongs to the other thread), D, F, E will also communicate. In this way, the groove ABCDEA also form a "∞" -shaped sealing space (such as the use of single-head thread, the groove will be along the axial disk Rao screw, the suction port through, can not form a seal). Not hard to imagine, in such a screw, will form a number of independent "∞" -shaped sealed space, each sealed space occupies the axial length exactly equal to the lead of the tired rod t. Therefore, in order to make the screw can suck, The drain port is separated by a screw thread segment length of at least more than one lead.

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