Treatment method: install the water pump or reduce the installation height of the pump; replace the motor bead bearings; correct the bended water pump spindle or adjust the relative position of the water pump and the motor.

Transmission shaft or motor bearing overheated:

Cause: Lack of lubricating oil or bearing rupture.

Treatment method: Add lubricating oil or replace the bearings.

Water pumps do not produce water:

Causes: The pump body and the water absorption pipe are not filled with diversion; the water level is lower than the water pump filter pipe; the water absorption pipe is ruptured.

The cover of the screw rod and the shell is a spatial surface. There are non -sealing areas such as AB or De on this curved surface, and forming many triangular gaps ABC and DEF with the grooves of the screw. The gaps of these triangles constitute the channel of the liquid, making the active screw groove A connected to the grooves B and C on the motion screw.

The grooves B and C are around the back along their own snail lines, and are connected to the grooves on the back D and E, respectively. Because the seal connecting the groove D, E and the groove F (it belongs to the other snail line), there are also a triangular gap similar to the front of the front, and D, F, E will also be connected.

In this way, the groove ABCDEA also forms a "∞" -shaped sealing space (if a single thread is used, the groove will be axis screw screw in the axial dish, which will be sucked and unable to form a seal).

It is not difficult to imagine that on such screws, many independent "∞" density spaces will be formed, and the axial length occupied by each sealing space is exactly equal to the guide T. Therefore, in order to separate the screw suction and oil discharge port, the length of the screw segment of the screw is at least one guide. Shanghai Takada Pump Co., Ltd. shared the screw water pumps here.