Water ring vacuum pump suction way

in make full use of vacuum technology and vacuum pump configuration of various kinds of equipment, a vacuum is the core, can meet the needs of many people. But how to obtain a vacuum is a more difficult problem. Then, I will share with you the water ring vacuum pump vacuum extraction method.

1。 Mechanical method

(1) the variable capacity pump: using the periodical change of pump cavity volume to complete the suction, exhaust, achieve the goal of extraction. This water pump can be divided into two types: reciprocating and rotating.

(2) the momentum transfer pump: relying on the high speed rotating blade or high speed jet momentum transfer to the gas or gas molecules, so that the gas from the entrance of the pump continuously passed to exports. Molecular vacuum pump, vapor jet pump and diffusion pump belong to this category.

2。 The laws of physics

gas trap pump is a vacuum pump, it can make the gas molecules on the surface of the adsorption or condensation in the pump. It has the following format:

1) adsorption pump, a kind of relying on large surface area of adsorbent ( Such as porous material) Physical adsorption of capture pump.

(2) the getter water pump: use getter chemical trap gas pump. Getter is usually block or deposition of fresh film in the form of a metal or alloy.

3. Getter-ion pumps: for by effect of electric field or electromagnetic field ionization gas adsorption on the surface of getter material, achieve the goal of extraction. It has the following two forms:

( 1) Evaporation ion pump: pump is a vacuum pump, it will be ionized gas adsorption on the getter material, the getter material sublimation (in the form of discrete or continuous Or evaporation) And cover the pump inside.

( 2) Sputtering ion pump: pump inside an ionized gas adsorption in the cathode sputtering of consecutive getter material pump, in order to achieve the purpose of pumping.

you can see, it is mainly used for the above through the introduction of mechanical and physical methods of pumping air into vacuum state, and can be used in various forms. In order to ensure the vacuum degree of get conform to the requirements of the quality, we must ensure that the vacuum degree has certain understanding and familiar with.

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