Electromagnetic pilot operated valve with internal waterproof structure

Abstract

An electromagnetic pilot operated valve with an internal waterproof structure comprises an electromagnet. The electromagnet comprises an electromagnet body, an end cover and ejector rods, wherein the electromagnet body comprises a first end face, the end cover is fixedly connected to the first end face of the electromagnet body, a wire connection hole is formed in the first end face of the electromagnet body, the two ejector rods are arranged in the electromagnet body and stretch out from the first end face, two front ejector rod holes corresponding to the two ejector rods and a wire connection cavity corresponding to the wire connection hole are formed in the end cover, a front annular sealing groove is formed in the end cover, the front annular sealing groove surrounds the two front ejector rod holes and the wire connection cavity, and a first sealing element is arranged in the front annular sealing groove.

Description

technical field [0001] The invention relates to an electromagnetic pilot valve, in particular to an electromagnetic pilot valve with a waterproof structure arranged between the inner end cover of the electromagnet and the main body. Background technique [0002] The underground environment of the coal mine is harsh, humid, high in water vapor, and valve products are prone to rust, especially the electromagnetic pilot valve. If the electromagnet in the electromagnetic pilot valve enters the water, it will affect the flexibility of the electromagnet ejector rod. In severe cases, the ejector rod will not reset. Even stuck. [0003] For the existing electromagnetic pilot valves in coal mines, some manufacturers are not waterproof, and some imported manufacturers use sealant for waterproofing. The sealant is a one-time seal. After use, it will age and fail, and the pilot valve after the sealing failure cannot be replaced locally, but must be replaced as a whole, resulting in gre...

AI Technical Summary

Problems solved by technology

[0002] The underground environment of the coal mine is harsh, with humidity, high water vapor, and valve products are prone to rust, especially the electromagnetic pilot valve. If the electromagnet in the electromagnetic pilot valve enters the water, it will affect the flexibility of the electromagnet ejector rod. In severe cases, the ejector rod will not reset. even stuck

[0003] For the existing electromagnetic pilot valves in coal mines, some manufacturers are not waterproof, and some imported manufacturers use sealant for waterproofing. The sealant is a one-time seal. After use, it will age and fail, and the pilot valve after the seal failure cannot be replaced locally, it must be replaced as a whole, resulting in great waste

Images