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Roots vacuum pump is a variable volume vacuum pump with two blades rotating synchronously in opposite directions. There is a small gap between the rotors, between the rotors and the inner wall of the pump shell, which do not contact each other. The following cleaning methods can be adopted for the oil pollution of Roots vacuum pump.

1、 Single screw pump does not absorb water or drain water

The causes are mainly the bottom valve stuck, the water filtering part is blocked, the water suction height is too high or the suction air leakage may also be due to the wrong steering, the impeller flow channel is blocked, etc. after one by one inspection, roots vacuum pump can take measures to repair the bottom valve, remove the blockage, correct the steering, clean the impeller and so on.

2、 Violent vibration of screw pump

It may be that the electric rotor is unbalanced, or the coupling is not well combined, and the bearing is worn and bent; it is also possible that the rotating parts are loose and cracked; perhaps the pipeline support is not firm, etc., which can be adjusted, repaired, reinforced and replaced separately.

3、 Leakage of water or air in the pipeline may not tighten the nut during installation

If the leakage is not serious, the cement or cement slurry mixed with asphalt oil can be applied at the place of air leakage or water leakage, and some wet mud or soft soap can be applied for temporary repair. If roots vacuum pump leaks at the joint, the nut can be tightened by hand. If the leakage is serious, it must be disassembled again.

At present, the working pressure of the gear pump is close to that of the plunger pump. The combined load sensing scheme provides the possibility of variable for the gear pump, which means that the original clear boundary between the gear pump and the plunger pump is becoming more and more blurred. One of the decisive factors for the rational selection of the hydraulic pump scheme is the cost of the whole system. Compared with the expensive plunger pump, the combination load sensing scheme provides the possibility of variable, Gear pump with its low cost, simple circuit, low filtering requirements, has become a practical choice in many applications.

When you choose an oil sealed pump, you should first know whether your vacuum system has any requirements for oil pollution. If the equipment is strictly required to be free of oil, you should choose various kinds of oil-free pumps, such as water ring pump, low-temperature pump, etc. if the requirements are not strict, you can choose to have an oil pump. Roots vacuum pump should be added with some anti oil pollution measures, such as adding cold trap, oil baffle and baffle, It can also meet the requirements of clean vacuum. Understand the composition of the extracted gas, whether there is condensable steam in the gas, whether there is particulate dust, whether there is corrosiveness, etc.

When selecting a vacuum pump, it is necessary to know the gas composition and select the corresponding pump for the extracted gas. If the gas contains steam, particles and corrosive gases, it should be considered to install auxiliary equipment such as condenser and dust collector on the air inlet pipeline of the pump, To consider the impact of oil vapor (oil fume) discharged from vacuum pump on the environment, if the environment does not allow pollution, oil-free vacuum pump should be selected, or the oil vapor should be discharged to the outdoor.