Type dry vacuum pump division -

dry vacuum pump appear very early, but there is no clear definition. Usually in 10 - to replace oil seal mechanical pump 2 Pa atmospheres of pressure within the scope of work. Oil and liquid cannot be used to pump gas channels ( Such as pump room) Can, vent and atmosphere are interlinked. Continuous emissions into the atmosphere air pump called dry vacuum pump ( Also known as oil-free vacuum pump) 。

there are many types of dry pump on the market. According to the basic principles, there are only two types, namely:

( 1) Volume type dry vacuum pump, such as multi-level roots pump, claw type pump, reciprocating piston pump, screw pump, vortex pump, etc. The limit of dry pump pressure is commonly 0. 1 - 10 pa, pump speed to zero. 01 - 0. 04 m3 / s

( 2) Oil-free vacuum pump has the momentum transfer, such as turbine oil pump. The exhaust side and atmosphere are interlinked, high compression ratio in the continuous flow condition. It is an original oil pump, water pump from atmospheric pressure to 1022 pa. Its structure using radial and axial flow pump of the composite structure, and adopts multilevel series pump. The limits of turbine pump pressure is about 10 - 2 Pa, pump speed to zero. 02 - 0. 15 m3 / s, traction and momentum transfer dry dry pump pump.

compared with oil seal mechanical water pump, dry pump to achieve the same limit pressure, residual gas composition is totally different. The results show that the residual gas of oil pump CNHM gas ( Hydrocarbon gas) Is the main component, and the residual gas of dry type pump is air composition. This confirmed in dry pump has no oil pollution in the process of pumping.

some dry pump still used lubricating oil in the structural design, such as pump drive gear and bearing, and synthetic oil, such as PFPE oil and other oil, etc. Some measures have been taken to prevent oil vapor appears in the pump room. Strictly speaking, it is not without pump. However, through analysis, this kind of synthetic oil composition at the entrance of the pump. It is very small, no effect.

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) series rotary vane vacuum pump, what ZJ had roots vacuum 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 water 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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