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Automatic flushing system for pressure reduction type pilot valve

A technology of automatic flushing and pilot valves, which is applied in the direction of fluid pressure actuation system components, fluid pressure actuation devices, servo motor components, etc., and can solve problems such as pollution and affecting the life, stability and reliability of decompression pilot valves

Pending Publication Date: 2022-07-19
申忠玉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the pressure-reducing pilot valve control system used for manipulating excavators, loaders and other construction machinery in the market has seriously affected the life, stability and reliability of the pressure-reducing pilot valve due to the existence of pollution.

Method used

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  • Automatic flushing system for pressure reduction type pilot valve

Examples

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Embodiment 1

[0007] Example 1 figure 1

[0008] The automatic flushing system for a pressure-reducing pilot valve includes a pressure-reducing pilot valve (1), an oil inlet (2) of the pressure-reducing pilot valve, an oil inlet (3) of the pressure-reducing pilot valve, and a pressure-reducing pilot valve. Pilot valve output port (4), pressure reducing pilot valve return port (5), flush valve (6), flush valve spool (7), flush valve oil inlet (8), flush valve control port ( 9), flush valve oil return port (10), flush valve spring (11), flush valve control force (12).

[0009] Among them, the flush valve control oil port (9) is on the right side of the flush valve spool (7), the flush valve spring (11) and the flush valve control force (12) are on the left side of the flush valve spool (7), and the pressure reducing pilot The oil inlet (2) of the valve and the oil inlet (3) of the decompression pilot valve are communicated inside the decompression pilot valve (1), and the output port (4) of...

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PUM

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Abstract

An automatic flushing system of a pressure reduction type pilot valve is composed of a pressure reduction type pilot valve, a flushing valve and the like, an oil inlet channel of the system is automatically flushed when the pressure reduction type pilot valve does not work, and when the pressure reduction type pilot valve works, an oil return opening of the flushing valve is closed under the control force of the flushing valve and the action of spring force. Therefore, the automatic flushing system not only can guarantee normal work of the pressure reduction type pilot valve, but also can automatically flush the oil inlet channel.

Description

technical field [0001] The invention relates to a pressure reducing type pilot valve control system, in particular to a pressure reducing type pilot valve automatic flushing system. Background technique [0002] At present, due to the existence of pollution, the decompression pilot valve control system used for manipulating construction machinery such as excavators and loaders on the market seriously affects the life, stability and reliability of the decompression pilot valve. Therefore, the market urgently needs a pressure reducing pilot valve control system with automatic flushing function to reduce the impact of pollution. The system automatically flushes the oil inlet of the system when the pressure reducing pilot valve is not working. When the pressure reducing pilot valve is working, the oil return port of the flushing valve is closed under the action of the control force of the flushing valve and the spring force, so as to achieve both It is an automatic flushing sys...

Claims

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Application Information

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IPC IPC(8): F15B13/02F15B21/00
CPCF15B13/02F15B21/00F15B2211/6355F15B2211/655
Inventor 申忠玉
Owner 申忠玉
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