The working principle of dry vacuum pump - common

about dry vacuum pump, there are a lot of types, dry, oil-free, claw, etc. So, do you know the working principle of so many kinds of products? If you don't know, please follow the steps to see, to understand the common principle of dry vacuum pump!

1, the dry screw vacuum pump is the use of a pair of dry screw vacuum pump in screw pump casing to synchronize the suction device of high-speed reverse rotation. Two screws is very balanced, and is supported by bearings. In the shell, there is a certain gap between screw and screw, so there is no friction between pump in the process of operation, stable running, low noise, do not need lubricant and the studio. Therefore, dry screw pump can remove a lot of water vapor. In the case of less dust and gas, extreme high vacuum degree, low power consumption, the advantages of energy saving is a maintenance free. It is a substitute for oil/water ring/jet vacuum pump.

2, oil-free reciprocating vacuum pump

by making a piston reciprocating motion to periodically change the pump room ( Cylinder) Work volume to pumping air vacuum pump, also known as the piston vacuum pump. The structure of the reciprocating vacuum pump is similar to the reciprocating piston compactor. At run time, inhale breath tube connected to fit the container, and the exhaust pipe directly through the atmosphere. Reciprocating vacuum pump can be used in the vacuum distillation, vacuum concentration, vacuum crystallization, vacuum filter, vacuum drying and vacuum operation of concrete.

3, claw type vacuum water pump

claw type vacuum water pump is composed of multi-stage rotor, in which each level has two rotor, two rotor rotate along the opposite direction, inlet connected to the pump cavity, pump cavity volume, the air is inhaled when the rotor closed suction, suction end. In the future, the pump cavity will be smaller, gas will be compressed. Open outlet, the pump cavity will be empty. After close the vent, exhaust will be completed.

4, oil-free scroll vacuum pump

vortex vortex of oil-free vacuum pump is one or a few involute spiral, its one end connected to the flat surface to form a vortex shape disk structure. Composed of static vortex and dynamic vortex pair vortex constitute the basic structure of pumping out of no oil eddy current. For example, in the two levels of vortex oil-free vacuum water pump, there are two fixed vortex with corresponding direction, as well as between two vortex rolling vortex. Of the relative movement of dynamic vortex disk and static vortex forms a crescent of the vacuum chamber, the volume changes, allowing the gas from the suction mouth suction, and discharge from the vent, and exhaust cycle.

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