Addtime： 2020-07-18 Browse times： 3128
In order to reduce the impact noise of slide valve vacuum pump, the impact of high-speed oil external shock should be reduced firstly; in order to further reduce the noise of slide valve vacuum pump, the impact of other shocks should not be ignored.
1. On the premise of not affecting the pumping performance of the slide valve vacuum pump, the oil supply to the pump cavity of the slide valve vacuum pump should be reduced as far as possible.
2. In order to absorb part of the impact energy, the material with good elasticity should be used in the exhaust valve plate of the slide valve vacuum pump.
3. The shape of the air inlet at the root of the slide valve rod of the slide valve vacuum pump is changed from the abrupt shape to the gradual change shape.
4. The exhaust hood which bears direct impact is made of high damping material, and its structure size should be designed according to the principle of noise elimination.
5. The exhaust hole of the slide valve vacuum pump body should be designed to be smooth and reasonable, so as to avoid the impact directly acting on the slide valve vacuum pump with large sound radiation surface.
6. Reducing the operating speed of the slide valve vacuum pump can also reduce the impact energy, but this will also reduce the pumping speed of the slide valve vacuum pump.
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