Once the exhaust filter element has problems in use, it will affect the efficiency of Roots vacuum pump, and even lead to roots pump can not be used. Therefore, regular maintenance of the exhaust filter element can effectively keep it in good working condition. So how to maintain the exhaust filter element correctly?
Maintenance method of exhaust filter element of Roots vacuum pump
1. Cleaning: the exhaust filter element of Roots vacuum pump is made of special material, which is easy to be damaged and needs maintenance. After using for a period of time, some filtered impurities remain in the filter element of the vacuum filter. If the filter element is not cleaned in time, the pressure will increase and the transmitter will remind.
At this time, it is necessary to clean and clean the exhaust filter element of the vacuum pump. When cleaning, pay attention not to deform or damage the filter element, otherwise it will affect the reuse, reduce the filtration efficiency and even destroy the whole system.
2. Replacement: before the exhaust filter element of Roots vacuum pump, water basin and towel must be prepared in advance. There are many ways to replace the vacuum pump exhaust filter element on the common vacuum pump filter. It must be replaced according to the standard method to avoid damaging the filter element and extending the service life of the exhaust filter element.
Roots vacuum pump usually adopts the form of vacuum unit, because the general roots vacuum pump can not directly start and discharge air under atmospheric pressure and high pressure, so it needs to be equipped with a booster pump. However, not all roots vacuum pumps need to start the front stage pumps, such as air-cooled Roots vacuum pumps, wet roots vacuum pumps and multi-stage rotary vane vacuum pumps roots vacuum pumps.
The universal roots vacuum pump needs to start at 6000 PA and maintain a stable high suction speed between 1333pa and 1pA. Because roots vacuum pump has no internal compression characteristics, it is realized by external compression in the form of gas discharge. Too high pressure and high pressure operation will make the vacuum pump load too high. The rotor should not emit too much heat during compression, resulting in excessive expansion. The clearance between the rotor and the pump chamber disappears, that is, it is blocked.
In order to solve this problem, the temperature difference between rotor and roots vacuum pump chamber is reduced by direct cooling of cooling gas to avoid excessive expansion of rotor and realize high pressure and high compression ratio operation. It can be used alone at atmospheric pressure or increase the vacuum degree of multiple series units.
The structure principle of air-cooled Roots vacuum pump is not much different from ordinary roots vacuum pump. The main outlet of the pump is connected with the cooler, and the pump on both sides of the cooling gas cools the rotor. In this structure, roots vacuum pump can be started directly and work independently under atmospheric pressure. The independent direct air cooling roots vacuum pump is about 1104 PA, which can obtain the lower limit pressure in series. The working pressure can reach 88 kPa.
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