A simple introduction - vacuum system

similar name of vacuum system is actually a vacuum unit. Vacuum unit is a closed loop composed of multiple vacuum pump vacuum device. It has no certain devices, such as the radiator and condenser. Vacuum system is often referred to as a complete range of components. There are a variety of vacuum applications, regardless of the vacuum application, but have a kind of extraction system can be removed from the extraction of container gas, so as to achieve the desired vacuum in vacuum container. For example, a vacuum container, the container through the tube and valve is connected to the vacuum pump. When the vacuum pump suction vessel, vessel with vacuum measuring device, the vacuum measuring devices constitute the most simple vacuum suction system. So how many letters are there in the vacuum system compared with unit pump? It is uncertain. First of all let us know about possible term of pump.

main pump: in a vacuum system, used to obtain the required to meet specific technological requirements of vacuum pump and the vacuum oil diffusion pump in the vacuum coating machine for example is the main pump.

backing pump: a vacuum pump, used to hold the level before the vacuum pump pressure at below its level before the critical pressure. Such as the rotation of the roots pump configuration before pump or valve is backing pump.

coarse pump: from atmospheric pressure pump and the system pressure pumping vacuum pump to another start work. Plunger pump in the vacuum coating machine, for example, is the original oil pump. :

maintenance pump in the vacuum system, gas quantity is too little to be effective pump before use. Therefore, provides a small amount of auxiliary pump to maintain the operation of the main pump. This pump is called pump maintenance. If in the export of diffusion pump installed small rotary vane pump, the pump must be maintained.

in fact, simple only get a rough vacuum vacuum system. If you want to get high vacuum, usually in series connection high vacuum pump in the vacuum system, this is a kind of like the roots pump and screw pump for higher vacuum pump. When high vacuum pumps in series connection, usually in the high vacuum pump the entry and exit of add a valve, so as to be in a vacuum, high vacuum pump can be individually constant only ( www。 cnst - 泵。 com) If the series connection of high vacuum oil diffusion pump, in order to prevent a lot of oil vapor flow back to pump container, usually set a trap - — At the entrance of the oil diffusion water pump is added. Water baffle. According to the need, also can increase the filter in the line, vacuum relay header, vacuum soft connection pipe, vacuum pump inlet air bleed valve, radiator, etc. , to form a relatively complete system of high vacuum.

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