Glass magnetic force piston-type pump

Abstract

The invention discloses a glass magnetic piston; it includes glass part and electromagnetic driving part. For glass part, glass piston with fixed magnetic core in it, set in glass pump body. Left end of glass pump connects to the glass grinding port of glass combination unidirectional valve. Right end of glass pump connects to the glass interface of glass combination unidirectional valve. Glass pumps body through the first and second electromagnetic coil. The invention is used in driving gas cycle; it has good air tightness, easy connection with glass device, and can run under high suction pressure.

Description

technical field [0001] The invention belongs to a gas driving device, in particular to a glass magnetic piston pump. Background technique [0002] In the laboratory, many reaction tests are carried out in glass instruments. For the process involving gas, many need to make it flow or circulate, and most of them are carried out at a small flow rate, so it is necessary to choose a suitable micro gas Drive the pump. [0003] Micro gas pumps currently used mainly include diaphragm pumps, micro electromagnetic pumps and peristaltic pumps. The principle of the diaphragm pump is that through the expansion and contraction of the diaphragm, the volume of a certain cavity is periodically reduced and expanded, causing the change of the gas pressure in the cavity, and then combined with the one-way valve to drive the directional movement of the gas; the principle of the micro electromagnetic pump is also the same as that of the diaphragm. The pump is similar, but the piston is driven t...

AI Technical Summary

Problems solved by technology

At this stage, most of these micropumps are made of plastic or metal, especially their external gas inlet and outlet; from the above we can also see that whether it is a diaphragm pump, a miniature electromagnetic pump or a peristaltic pump, the gas needs to contact the pump chamber. For diaphragm pumps and peristaltic pumps, their diaphragms or hoses are soft and should not withstand harsh pressure conditions

[0004] In summary, there are some problems in the micro gas pump at this stage: it is not easy to connect with the glass device, so that the airtightness of the whole system is poor; it is in contact with a variety of experimental gases, and its corrosion resistance is poor; or due to its poor pressure bearing or There is gas overflow, it is not suitable to operate under severe pressure conditions

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