Gear pump burst and oil spill solution

In the course of application, gear pumps often show the appearance of splitting and oil leakage. What is the reason for this? When this situation is encountered, how can it be useful?

The formation of a gear pump, which is a large pump split, is analyzed:

1. The pilot pressure regulating valve or overflow valve in the work distribution valve is stuck, the system oil circuit is in the closed state, and the system pressure is increased indefinitely, eventually causing the large pump to split;

2. The operator did not follow the requirements of the specification, and the private bank adjusted the pressure so that the pressure of the system exceeded the specified value and the formation of a large pump split was also simple.

A useful plan for dealing with large pump splitting questions claims:

According to practical experience, the pressure can be changed one by one in the clockwise direction and the system pressure can be improved by 3.0 to 4.0 MPa; conversely, the system pressure can be reduced by 3.O to 4.0 MPa. In addition, the pressure reduction grooves on both sides of the plate should be installed in the high-pressure chamber of the gear oil pump to avoid “oil trapping” of the oil pump and cracking of the oil pump.

Analysis of the causes of gear pump oil leakage:

1. Because the internal gear pump receives high pressure for a long time, the connecting bolts of the left and right pump covers and the pump body are subjected to a long pulling force to form a loose oil leak;

2. If the pump cover or pump body has radial cracks, scratch marks, damaged oil seals, etc., oil leakage will also be formed.

A useful plan for dealing with oil pump leaks claims:

Timing (about 6 months) to see if its bolts are loose. Sometimes, because the depth of the bolt hole is shallow, the bolt cannot be locked. At this moment, the bolt should be short.