Improvement of seal structure design of hydraulic valve

Hydraulic control valves, hydraulic control check valves, etc. are control valve types of modern mechanized coal mining fully mechanized hydraulic support, mainly used to control the lifting, support and movement of hydraulic supports.
In order to improve the sealing performance and service life of the hydraulic valve, we have carried out repeated experiments on several main sealing structures of the valve body cavity part, and improved the structure, and finally achieved satisfactory results. 
Improved sealing structure of valve seat and valve stem
Original seal structure analysis
The sealing structure of the original hydraulic valve uses a large number of tapered sealing structures of the valve seat and the valve stem, and the sealing cone angles of both are designed to be 90° ± 0. 2° (the seat cone angle is α and the stem taper angle is β).

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