Screw pump in the operation process will occur some fault problems, such as speed selection error, impurities into the pump body and so on, then how to deal with these problems and solve it, the small machine Xiaobian to share with you

One, to avoid screw pump in the case of broken material use

The screw pump must not be allowed to operate in cutting conditions, the occurrence of rubber stator due to dry friction, instant high heat and burn out, so the grinder intact, is one of the necessary conditions of grille unimpeded, normal operation of the screw pump for some screw pump pump body still installed end feeding stop device, when cutting, due to its characteristics of screw pump self-priming function, will produce a vacuum chamber, a vacuum device causes the screw pump to stop running.

Two, keep constant outlet pressure

Screw pump is a positive displacement rotary pumps, when the exit blocked, the pressure will gradually increase, so that the pressure exceeds a predetermined value. When the motor load increased dramatically. Transmission machinery related parts of the load will exceed the design value, severe electrical burn occurs, transmission parts breakage. In order to avoid damage to the screw pump, usually installed in the screw pump bypass relief valve outlet, the outlet pressure to stabilize and maintain the normal operation of the pump.

Three, reasonable selection of rotation speed

Screw pump flow and speed linearly relative to the low speed of the screw pump, screw pump high speed can increase the flow and head, but significantly increased power, high speed accelerated between the rotor and the stator wear, premature failure will make screw pump, and high speed screw pump rotor length is very short, easy to wear, and thus shorten the life of the screw pump.

Four, ensure that debris does not enter the pump body

Wet sludge mixed with the solid debris will rubber material damage to the stator of the screw pump, so to ensure that debris does not enter the pump chamber is very important, many wastewater treatment plant before the installation of a grinder pump, and some install grid device or filter, blocking debris into the pump, the grid should be cleared in time to avoid clogging fishing.

Single screw pump is working with the exterior surface corresponding to the inner rotor in the stator internal meshing, the contact line special form, so that the stator cavity, the contact line called the seal line. When the rotor rotates at a certain trajectory, the sealing line for axial movement, also make the stator cavity axially move, i.e. volume displacement then, the sealing line at one end and disappear, sealing the new line from the other end, with the medium from one end to the other end. The stator of single screw pump with good elastic rubber material, and it requires a rotor meshing interference amount, to produce a reliable seal.

When the pump work sealing line can effectively prevent the gas through, so as to achieve the purpose of conveying gas; when the medium containing solid particles, if solid particles squeeze in the sealing line, due to the elasticity of the rubber stator stator rubber surface is compressed, the solid particles across the seal line, the stator rubber rebound back to its original shape, so single screw pump can be realized, containing trace amounts of solid particles contained in the conveying medium.

General properties of single screw pump transmission medium, the state is more complicated, may cause blockage in the pipeline. Because of the single screw pump is a positive displacement type pump, when the clogging or human operational errors, the pump will cause the overpressure, it is easy to damage the components. In order to prevent damage to the pump, the pump must be in the discharge pipe into the suction pipe installed between the safety valve can be installed in the export pipeline pressure relay, automatic alarm and stop the pump in the pump exceeds the rated pressure. If there is solid debris into the pump of screw pump stator rubber material damage, so to ensure that debris does not enter the pump cavity is very important, with some a grinder in the pump before the installation of some grid device or filter, blocking debris into the pump, the grid should be cleared in time to avoid clogging fishing.