High-pressure multi-way valve based on laser micromachining technology

Abstract

The invention relates to the technical field of hydraulic components, in particular to a high-pressure multi-way valve based on the laser micromachining technology. The multi-way valve is used for solving the problems that in the prior art, because pressure equalizing grooves formed in a valve element cause stress deformation of the valve element, the precision of matching between the valve element and a valve body hole is affected, errors of the coaxiality between the valve element and the valve body hole are enlarged, and consequently the valve element and the valve body hole are tightly clamped together. According to the scheme, the matching circumferential surface of a valve element of the multi-way valve and a valve body of the multi-way valve is provided with netted micro grooves machined through lasers, the groove width of each micro groove ranges from 0.1 mm to 0.3 mm, the groove depth of each micro groove ranges from 0.004 mm to 0.02 mm, the micro grooves include the circumferential grooves arranged in parallel and the axial circumferential grooves arrayed in parallel, the interval between every two adjacent circumferential grooves ranges from 1 mm to 3 mm, and the interval between every two adjacent axial grooves ranges from 1 mm to 3 mm.

Description

technical field [0001] The invention relates to the technical field of hydraulic components, in particular to a high-pressure multi-way valve based on laser micromachining technology. Background technique [0002] The multi-way valve is a multi-functional integrated valve with more than two reversing valves as the main body, which integrates the reversing valve, check valve, overload valve, oil replenishment valve and brake valve, and can perform multi-channel oil flow. Direction, switch control. It has the characteristics of compact structure, simplified pipeline and convenient operation. It is widely used in hydraulic systems such as engineering machinery, mining and metallurgical machinery, lifting and transportation machinery, and light industrial machinery. [0003] High-pressure multi-way valve refers to a multi-way valve with a working pressure greater than or equal to 28MPa. Its core technology includes design, casting of the valve body, and finishing technology of...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a high-pressure multi-way valve, which overcomes the stress deformation of the valve core caused by the opening of the pressure equalizing groove on the valve core, which affects the matching accuracy of the valve core and the valve body hole.

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