With the improvement of technology, water ring vacuum pump has been widely used. Many businesses in the installation and use of different problems, reduce the service life of the vacuum pump, so what kind of installation is appropriate? How to solve the gap problem in installation?

The fitting tolerance between parts is a very important parameter, which directly affects the performance of vacuum pump. The accuracy of the parts has been analyzed before and the rough bottom will appear if the fitting is not good.

For example, there is a 2x-15 pump, the user response vacuum is always not high, pre pumping found that it runs normally, no air leakage, no oil leakage, noise is not obvious, temperature rise is not serious, only the vacuum degree is only 20 grids (about 8 * 10-2 Torr). Experience has proved that the oil of water ring vacuum pump is too dirty, there is moisture in the oil, the wrong oil is used, the parts in the cavity are worn, and the clearance between parts is too large.

When repairing, the oil can be changed first because this method is the most convenient and effective method. Often some of the pump vacuum is not high, change the oil to solve. If the oil is not changed, the next step is to replace the oil for cleaning. The vacuum degree of the 2x-15 water ring vacuum pump is still 20 gauge after oil change, so it is decided to disassemble it for inspection. After cleaning and cleaning, the cavity size of the parts is measured, and it is found that the end clearance is 4-5 wires and partial shot. However, considering this kind of clearance, it is often possible to adjust the oil circuit. Therefore, after blowing through the oil passage hole, pengyou is installed, but it is still 20 gauge.

When it is disassembled for the second time, check the out of perpendicularity (should be no more than half wire, i.e. Q005 mm). If it is found that it is not good, it is sent to the surface grinder to grind 2-3 wires from the cavity gamma surface, so that the fit gap between the rotary blade and the end cover of the cavity is less than 2-3 wires, and the non perpendicularity is qualified. In this way, after re assembly, the problem is solved. The vacuum degree reaches 70 grid ((about 1.5 * 10-2 Torr), which has met the production use.

Some water ring vacuum pumps with middle diaphragm press in type will deform the pump cavity and cause air leakage due to excessive interference during pressing in. Improper assembly, different tightness of end cover screws, axial displacement of rotor, poor movement of vane or spring deformation, damaged or not tightened gasket of air mixing valve will make the vacuum degree of mechanical pump very low. As long as the corresponding problems are found out and dealt with, they can be repaired.