Gear Pump Pipeline Oil Leakage Treatment: 9 Points
How to deal with the oil leakage problem of the gear pump pipeline? Parker Gear Pump solution:
1 Check if the oil pipe is damaged. If the tubing is damaged, it will of course leak oil. Countermeasures can be taken for the following situations.
According to the working pressure of the hydraulic system, choose the appropriate oil pipe. For example, nylon tubes can only be used for low pressure, copper tubes for medium and low pressure, and medium and high pressure to use seamless steel tubes or high-pressure steel wire braided hoses. The oil pipe that meets the specifications of the husband must be selected correctly according to the working pressure.
Tubing burst. The reason is often that a rubber tube with no steel wire braid is used as a rubber tube with a steel wire braid, and only one layer of wire is used for a three-layer steel wire mesh to be competent, and a poor quality hose is required. Requirement: Make sure to use rubber hose that meets the specifications.
2 The tubing is not installed properly. For example, the hose cannot be twisted during installation, the twisted hose will rupture over time, and the joint will leak oil.
3 When running, the expansion and contraction of the hose length is insufficient and the tension is too tight. . Because the hose is under pressure and temperature, the length will change. Generally shrinkage, the amount of shrinkage is about 3% of the tube length.
The running hose rubs against other pipes or rigid hardware.
4. The bending radius of the rubber pipe joint is unreasonable, or the hose has a bending radius which is not uniform during the working process.
5. For the rigid tube of the gear pump, there must be a sufficient length of straight line in the bend, the bending radius should be large enough, and the bend (the joint with the pipe joint) should have a section of straight pipe, the length should be ≥ 2D ( D is the outer diameter of the pipe), and the minimum radius of curvature of the bend is ≥ (9 ~ 10) D. It is best not to use a hose at a right angle bend. Otherwise, under the condition of alternating pressure, the loss will be fatigued due to the change of the length and radius of curvature of the hose, resulting in oil leakage, using) f (short steel needle tube) Attention to the government.
6. Avoid touching the outer walls of the hose or touching the sharp edges of the machine to avoid damage to the hose.
7. In order to protect the hose from external objects and excessive bending at the joint, spiral thin steel wire can be placed on the outside of the tube and tightly wound near the joint to increase the resistance to bending.
8. It is best not to use it in an environment with high temperature and corrosive rubber gas.
9. If the number of hoses in the system is large, the pipe clamps should be installed separately to fix them. Or separated by a rubber sheet. Try to avoid hoses coming into contact with each other or with other mechanical parts to avoid damage and oil leakage due to mutual influence and mutual rubbing.
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