External type damping-adjustable damping valve

Abstract

The invention discloses an external type damping-adjustable damping valve which comprises a valve body, wherein a horizontally arranged fluid channel is arranged at the right part in the valve body; an external thread joint is arranged on the right side of the fluid channel; an accommodating cavity is arranged at the left part in the valve body and communicates with the fluid channel; a semispherical fixed spherical shell is fixedly arranged at the left end of the fluid channel; an opening of the fixed spherical shell faces to the left; a damping hole communicating with the fluid channel is formed in the right end of the fixed spherical shell; two guide spherical shells are symmetrically arranged at the upper and lower parts in the fixed spherical shell; a locating spherical core is arranged between the guide spherical shells; and the guide spherical shells fix the locating spherical core through multiple connection blocks. The external type damping-adjustable damping valve is simple and reasonable in structure; by the external arrangement mode, the shortcoming that damping in an existing damping liquid controlled hydraulic valve is difficult to replace is overcome, and the maintenance difficulty and the cost are reduced; and meanwhile, the damping can be easily and conveniently adjusted, and the practicability is extremely high.

Description

technical field [0001] The invention relates to a damping valve, in particular to an external damping valve with adjustable damping. Background technique [0002] The hydraulic control valve is a commonly used pressure control element in the hydraulic system. In some hydraulic control valves, such as pilot relief valves or pilot pressure reducing valves, the flow channel is often realized by setting damping holes and damping blocks. The pressure difference between the front and back, thus causing the pressure drop, realizes the pilot pressure control, but the damping in these valve bodies is set inside the valve body, when the damping is damaged, the valve body needs to be disassembled and the replacement remains unchanged, and the valve inside the valve body The machining accuracy of the core is high, and it is easy to be scratched during disassembly and assembly, resulting in damage to the valve body, and the overall replacement will increase maintenance costs. Therefore, ...

AI Technical Summary

Problems solved by technology

[0002] Hydraulic control valves are commonly used pressure control components in hydraulic systems. In some hydraulic control valves, such as pilot relief valves or pilot pressure reducing valves, the flow channel is often realized by setting damping holes and damping blocks. The pressure difference between the front and rear causes a pressure drop and realizes pilot pressure control. However, the damping in these valve bodies is set inside the valve body. The machining accuracy of the core is high, and it is easy to be scratched during disassembly and assembly, resulting in damage to the valve body, and the overall replacement will increase maintenance costs, so it is necessary to invent an external damping device

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