Multi-way reversing valve based on integral threaded cartridge pilot hydraulic lock

Abstract

The invention discloses a multi-way reversing valve based on an integral threaded cartridge pilot hydraulic lock. The multi-way reversing valve comprises a main valve body, a main valve rod is installed in the main valve body, an oil inlet P is formed in the main valve body, a first oil channel, a second oil channel and a sixth oil channel are formed in the one side of the oil inlet P correspondingly, and a third oil channel, a fourth oil channel and a fifth oil channel are formed in the other side of the oil inlet P correspondingly; a shuttle valve rod is further installed in the main valve body, a pilot one-way valve A located between a working oil port A and the second oil channel is installed in a shuttle valve hole in one side of the shuttle valve rod, and a pilot one-way valve B located between a working oil port B and the fourth oil channel is installed in the shuttle valve hole in the other side of the shuttle valve rod; pilot type one-way valve hydraulic locks are arranged atthe working oil port A and the working oil port B, so that oil backflow can be effectively prevented; and the pilot one-way valve can be opened in time and release load pressure under the overload condition, so that the pilot one-way valve is easier to open, impact is reduced, and cavitation erosion is reduced.

Description

technical field [0001] The invention relates to a hydraulic multi-way valve, in particular to a multi-way reversing valve based on an integral threaded plug-in pilot hydraulic lock. Background technique [0002] The traditional hydraulic lock multi-way valve is greatly affected by the load during the reversing process. When the load is too large, the valve stem is not easy to operate and requires a huge force to pull it. At the same time, under the condition of large load, the ordinary hydraulic lock is difficult to open. When it is opened, it will be accompanied by a relatively loud noise, and it will often cause a large impact, resulting in cavitation and damage to the valve body. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a multi-way reversing valve based on an integral threaded plug-in pilot hydraulic lock that can release pressure in time and prevent oil backflow. [0004] In order to solve the above-m...

AI Technical Summary

Problems solved by technology

[0002] The traditional hydraulic lock multi-way valve is greatly affected by the load during the reversing process. When the load is too large, the valve stem is not easy to operate and requires a huge force to pull it. At the same time, under the condition of large load, the ordinary hydraulic lock is difficult to open. When it is opened, it will be accompanied by a relatively large noise, and it will often cause a large impact, resulting in cavitation and damage to the valve body

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