Imported rotary vane vacuum pump pumping speed of how to improve? - - - - - -

how to effectively increase the import of rotary-vane vacuum pump pumping speed?

1。 Imported rotary vane vacuum pump can work in an atmosphere of initial pressure. Starts, with the increase of suction time, by the vacuum suction the container increases, and gradually reduce the actual suction vacuum pump speed. When limits, vacuum pumping speed is zero.

2。 Imported rotary vane vacuum pump's actual pumping speed is less than the geometric pumping speed. In the pumping process, due to factors such as pipe flow resistance, vacuum pump oil, the actual pumping speed of the pumping speed decrease effectively. Is mainly caused by the oil film clearance back to oil and gas channel steam backflow, oil and steam flow is the main factor which reduces the pumping speed. Due to the severe reflux 'internal friction', under the low pressure pump speed increase is limited.

3。 Import rotary-vane vacuum pump are depend on the oil film lubrication and seal. In the process of operation, serious friction can cause local overheating, the oil film in vacuum pump oil pyrolysis, the release of oil steam and unsaturated hydrocarbons. Therefore, the vacuum pump oil pyrolysis material are the main sources of pollution.

4。 Oil steam backflow associated with the vacuum degree of pumping container, namely with the pressure, change, return rate is different. Vacuum pump has just started, the density of gas molecules is very high, relative speed is high, so it's difficult to oil vapor diffusion back. In from the start to the pressure, 1 range, due to the dynamic gas molecules in the vacuum system of frequent collision, on the one hand, the oil vapor molecules of backflow resistance increased; On the other hand, under the purging of smoke inhalation flow space, can increase the removal ability, which can effectively prevent the reverse flow of oil and gas; Therefore, when the pressure P10 - 1, when oil steam backflow rate is relatively small, pumping speed loss is not big.

when the pressure in 10 - 1 and 10 2, the air flow is a transitional flow state, then the oil vapor began to reverse diffusion. Since then, as the pressure to reduce gradually, the gas into molecular flow, flow rate is becoming more and more high. In the 10 - 3 and 10 - 4 between, reverse diffusion maximum oil vapor molecules, pumping speed and falling even faster.

import vacuum pump manufacturers

only constant mechanical vacuum pump factory main products are 2 bv, V, VG, VI, VZ,. vn, LRP series water ring vacuum pump, X, GVD (gnu visual debugger) imported rotary vane vacuum pump series, what ZJ had roots vacuum water pump series, GXS, DHS, VSD, GHS series screw vacuum pump, DZS series claw pump, the central vacuum system, etc. The company acting with atlas. Manufacturing ( 阿特拉斯) , times g speck products. Constant to mechanical and electrical vacuum pump manufacturer with many years of production experience, first-class technical staff, perfect after-sales channels to make the product quality stable and reliable for many years. Constant to mechanical and electrical manufacturers expect to cooperate with every colleague, more knowledge of vacuum pump please continue to pay attention to our constant mechanical and electrical equipment co. , LTD. Contact phone number - 400 8625533, mobile phone 13928410990.

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