Magnetic valve with compact structure, good tightness and high reliability

Abstract

The invention discloses a magnetic valve with a compact structure, good tightness and a high reliability. The magnetic valve comprises a body, the body comprises a valve seat, a coil arranged on the valve seat and a valve element sleeve arranged in the coil and a valve element arranged in the valve element sleeve, a valve water inlet is arranged on the right side on the lower portion of the valve seat, a valve water outlet is arranged on the left side on the lower portion of the valve seat, a plastic diaphragm and a rubber diaphragm are arranged between the coil and the valve seat and on the lower portion of the valve element sleeve, the plastic diaphragm is arranged on the upper portion of the rubber diaphragm, the plastic diaphragm and the rubber diaphragm are fixed together, a rubber seal head is arranged on the lower portion of the valve element, a valve element reset spring is arranged on the upper portion of the valve element, a pressure control cavity water inlet is arranged on the right portion of the plastic diaphragm, a pressure control cavity water outlet is arranged in the middle of the plastic diaphragm, the pressure control cavity water inlet is opposite to the pressure control cavity water outlet, and a tower-shaped with an unclogging pin is arranged between the plastic diaphragm and the valve element sleeve.

Description

technical field [0001] The invention relates to a solenoid valve, in particular to a solenoid valve with compact structure, good sealing performance and high reliability. Background technique [0002] Solenoid valves are widely used as key components of automatic control, but due to structural defects, firstly, they are unreliable to close and easy to leak under low water pressure of 0-0.02MPa. The relevant solenoid valve standards stipulate that the effective working pressure range of solenoid valves is 0.02 ~0.8MPa. It can be seen that the closing performance of the solenoid valve in the low pressure range of 0-0.02 cannot be guaranteed; the production of existing products is through strict control of parts manufacturing and assembly accuracy, and strict testing to ensure product performance, which greatly increases the difficulty of production and assembly, but Product quality is difficult to be completely guaranteed. [0003] The second is that there are strict require...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the structural defects of some solenoid valves on the existing market. First, the closure is unreliable and easy to leak under the condition of low water pressure 0-0.02MPa. The relevant solenoid valve standard stipulates that the effective working pressure range of the solenoid valve is 0.02 -0.8MPa. It can be seen that the closing performance of the solenoid valve in the low pressure range of 0-0.02 cannot be guaranteed; the production of existing products is through strict control of parts manufacturing and assembly accuracy, and strict testing to ensure product performance, which greatly increases the difficulty of production and assembly, but The product quality is difficult to be completely guaranteed; the second is that there are strict requirements for the particulate impurities in the water and aqueous solution flowing through the solenoid valve, and the particulate impurities are easy to block the water inlet of the pressure control chamber diaphragm, making the solenoid valve control invalid; making the electromagnetic valve use occasion and The problem that the service life is greatly limited

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