Oil distribution valve

Abstract

The invention discloses an oil distribution valve. The oil distribution valve comprises a valve sleeve and a control rod, wherein the valve sleeve is internally and coaxially provided with a first thread hole, a first valve hole, a communication hole, a second valve hole and a second thread hole in sequence from bottom to top; an A oil opening, a T oil opening and a B oil opening are formed in theperipheral side face of the valve sleeve; the first valve hole is internally connected with a first cone valve element in a sliding manner; the second valve hole is internally connected with a secondcone valve element in the sliding manner; a first screw plug is connected into the first thread hole through a thread; a first spring is arranged in the valve sleeve and is located between the firstscrew plug and the first cone valve element; a second screw plug is connected into the second thread hole through a thread; a second spring is arranged in the valve sleeve and is located between the second screw plug and the second cone valve element; the control comprises a rod body located in the communication hole, an upper rod which is arranged at the upper end of the rod body and extends in the direction of the second thread hole and a lower rod which is arranged at the lower end of the rod body and extends in the direction of the first thread hole. The oil distribution valve can be reliably sealed, is simple in structure and convenient to process and repair.

Description

technical field [0001] The invention relates to the technical field of hydraulic valves, in particular to an oil distribution valve. Background technique [0002] The oil distribution valve is an important hydraulic component used in the micro hydraulic power unit. Its main function is to cooperate with the two-way hydraulic pump. When the motor is switched forward and reverse, it automatically switches the connection between the two oil ports of the two-way hydraulic pump and the fuel tank. The oil distribution valves in the prior art have two structures: spool valve type and cone valve type. The structure of the spool valve type oil distribution valve is simple and easy to process. Low, the leakage is large when the pressure rises, so that the micro hydraulic power unit cannot reach a higher pressure; the cone valve type oil distribution valve is a cone seal structure, and the sealing performance is good, which can make the micro hydraulic power unit reach a higher pressur...

AI Technical Summary

Problems solved by technology

The oil distribution valves in the prior art have two structures: spool valve type and cone valve type. The structure of the spool valve type oil distribution valve is simple and easy to process. Low, the leakage is large when the pressure rises, so that the micro hydraulic power unit cannot reach a higher pressure; the cone valve type oil distribution valve is a cone seal structure, and the sealing performance is good, which can make the micro hydraulic power unit reach a higher pressure. pressure level, but the poppet valve oil distribution valve in the prior art has a two-stage structure, including the first poppet spool and the second poppet spool. The connecting rod of the first poppet spool protrudes out of the valve hole, and then the second poppet spool is installed on the valve stem on the first poppet spool with interference, so that the first poppet spool and the second poppet spool form a As a whole, the installation process is very complicated and time-consuming, and when the poppet spool oil distribution valve is damaged, it cannot be disassembled, and the entire valve block needs to be replaced, resulting in high maintenance costs

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