Plug-in explosion-proof hydraulic valve set

Abstract

An inserting type explosion-proof hydraulic valve group is disclosed. The invention comprises a valve body and a thread inserting electromagnetism reversing valve, and the invention is characterized in that a casing body is arranged on the valve body, a valve is arranged in the casing body, a cover is added; and an upper cover, the casing body, and the valve body are tightly fixed into a hexahedron through bolts; a plurality of installing holes of a solenoid valve are arranged on the upper surface of the valve body, and an oil inlet opening P and an oil return opening T communicated with the installing holes and hydraulic pressure oil holes A and B communicated with the controlled hydraulic mechanism are arranged in the valve body; the rectangular installing surface of the valve body, the casing body, and the upper cover edge and the leading wire mouth are respectively processed according to the explosion isolation standards. The combination surface of the upper cover and the valve body of the invention is processed according to the flatness and smoothness of the explosion isolation standards, the invention solves the explosion-proof problem, and the advantage of the inserting type solenoid valve is contained, compared with the plate type valve, the flow is greatly enhanced without leakage, the reliability of the hydraulic system is greatly enhanced, the installing space is obviously saved, and the cost is remarkably reduced.

Description

technical field [0001] The invention belongs to a plug-in explosion-proof hydraulic valve group used in coal mines and other occasions with explosion-proof requirements. Background technique [0002] The existing domestic explosion-proof solenoid valves for coal mines are all plate-mounted electromagnetic reversing valves. The plate-mounted electromagnetic reversing valves are large in size. In the case of a very compact mining machinery structure, the installation space of the cluster valve group is very limited, so it is not suitable for layout. . In addition, this explosion-proof plate valve has relatively large leakage and relatively low excess flow. Cartridge solenoid valves have the characteristics of small size, large flow, low leakage and high integration. However, there are no cartridge solenoid directional valve products that meet explosion-proof requirements. Contents of the invention [0003] The purpose of the present invention is to provide a hydraulic sole...

AI Technical Summary

Problems solved by technology

[0002] The existing domestic explosion-proof solenoid valves for coal mines are all plate-mounted electromagnetic reversing valves. The plate-mounted electromagnetic reversing valves are large in size. In the case of a very compact mining machinery structure, the installation space of the cluster valve group is very limited, so it is not suitable for layout.

In addition, this explosion-proof plate valve has relatively large leakage and relatively low flow rate

The plug-in solenoid valve has the characteristics of small size, large flow, low leakage, and high integration. However, there is no plug-in electromagnetic reversing valve that meets the explosion-proof requirements.

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