Analysis of severe vibration or noise generation of single-screw pump body and no water discharge
1. Single screw pump body vibrates or produces noise
Cause: The pump is not installed securely or the pump is installed too high; the motor ball bearing is damaged; the pump shaft is bent or not concentric with the motor shaft, and is not parallel.
Treatment method: stabilize the water pump or reduce the installation height of the water pump; replace the motor ball bearing; correct the curved water pump spindle or adjust the relative position of the water pump and the motor.
Second, single screw pump drive shaft or motor bearing overheating
Cause: Lack of lubricating oil or broken bearings.
Treatment: Fill with oil or replace the bearing.
Third, the single screw pump does not produce water
Cause: The single screw pump and the suction pipe are not filled with water; the moving water level is lower than the water pump water pipe; the water suction pipe is broken.
The sealing surface between the screw and the housing is a spatial curved surface. There is a non-sealed area on this curved surface and a plurality of triangular notches are formed with the groove portion of the screw. These triangular indentations form a passage for the liquid to communicate the active screw groove with the groove on the driven screw. The grooves are then wound along their own spirals to the back and communicate with the grooves on the back. Since there is a triangular notch similar to the front surface on the sealing surface where the groove and the groove F belong to the other head spiral, the grooves will also communicate.
In this way, the groove also forms a "∞"-shaped sealing space (if a single-head thread is used, the groove will be screwed in the axial direction, and the suction and discharge ports will pass through, failing to form a seal). It is not difficult to imagine that on such a screw, a plurality of independent "∞"-shaped sealed spaces will be formed, each of which occupies an axial length exactly equal to the lead t of the tired rod. Therefore, in order to separate the screw suction and discharge ports, the length of the threaded section of the screw is at least greater than one lead.