Solenoid valve with long service life

Abstract

The invention discloses a solenoid valve with a long service life. The solenoid valve comprises a valve seat, a coil rack arranged on the valve seat and a valve cover arranged on the coil rack in a covering mode and connected to the valve seat. The valve seat is internally provided with a buffer cavity communicating with an inner cavity of the coil rack and further internally provided with a liquid inlet pipe and a liquid outlet pipe which communicate with the buffer cavity, and the liquid inlet pipe and the buffer cavity communicate through a through hole formed opposite to an inner cavity ofthe coil rack; a coil is wound outside the coil rack, and an iron core is slidably arranged inside the coil rack; the end, close to the through hole, of the iron core is fixedly provided with a valvecore, and the end, close to the valve cover, of the iron core is fixedly provided with a first permanent magnet; and a second permanent magnet which is repellent to the first permanent magnet is fixedly arranged at the top of an inner cavity of the valve cover. According to the solenoid valve with the long service life, a spring in a traditional solenoid valve is simplified so that the structureof the solenoid valve can be simple, the situation that the solenoid valve is used for long time, then a spring is prone to deforming, and the service life of the solenoid valve is affected accordingly does not exist, and thus the service life of the solenoid valve is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an electromagnetic valve with long service life. Background technique [0002] Solenoid valve is a common industrial equipment used to realize electromagnetic control, and its application is more and more widely; Closed; when the solenoid is energized, the valve core leaves the valve port, compresses the spring, and the solenoid valve opens; this kind of solenoid valve needs to install a spring in the through hole of the valve core, the structure is relatively complicated, and the requirements for the spring are relatively high, and the second is the service time of the spring. After a long time, it is easy to deform, which seriously affects the sealing between the valve core and the valve port. The spring is particularly easy to be damaged when the solenoid valve is frequently opened and closed, which seriously affects the service life of the solenoid valve. The spool and seat o...

AI Technical Summary

Problems solved by technology

[0002] Solenoid valve is a common industrial equipment used to realize electromagnetic control, and its application is more and more widely; Closed; when the solenoid is energized, the valve core leaves the valve port, compresses the spring, and the solenoid valve opens; this kind of solenoid valve needs to install a spring in the through hole of the valve core, the structure is relatively complicated, and the requirements for the spring are relatively high, and the second is the service time of the spring. After a long time, it is easy to deform, which seriously affects the sealing between the valve core and the valve port. The spring is especially easy to be damaged when the solenoid valve is frequently opened and closed, which seriously affects the service life of the solenoid valve.

The spool and seat of the existing solenoid valve are also prone to offset, which will cause severe wear of the spool and reduce the service life of the solenoid valve after prolonged use; in addition, the installation and disassembly of the existing solenoid valve are also relatively difficult. easy maintenance

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