Ultrahigh-pressure three-position four-way electromagnetic reversing valve

Abstract

The invention discloses an ultrahigh-pressure three-position four-way electromagnetic reversing valve and relates to the technical field of fluid pressure executing mechanisms. The ultrahigh-pressure three-position four-way electromagnetic reversing valve comprises a valve body, wherein a through hole is formed in the valve body; electromagnets are connected at two ends of the through hole; an oil distributing sliding sleeve is sleeved in the through hole; a first annular undercut groove, a second annular undercut groove and a third annular undercut groove are formed on the outer periphery of the oil distributing sliding sleeve; an oil inlet is formed on the second annular undercut groove; a first oil outlet is formed on the first annular undercut groove; a second oil outlet is formed on the third annular undercut groove; a valve core is arranged in the oil distributing sliding sleeve; annular blocks matched with the first oil outlet and the second oil outlet are arranged in the length direction of the valve core; spring bases are arranged in the through hole and between the two ends of the oil distributing sliding sleeve and the two electromagnets; each spring base is provided with an inner base body and an outer base body; and a spring is connected and a push rod is arranged between each group of the inner base body and the outer base body. A slide valve structure is easy to reverse under high pressure.

Description

technical field [0001] The invention relates to the technical field of fluid pressure actuators, in particular to an ultra-high pressure three-position four-way electromagnetic reversing valve for controlling the advance and retreat of a hydraulic cylinder with a rated pressure greater than 31.5MPa. Background technique [0002] For hydraulic components with mineral oil as the medium, the definition of ultra-high pressure means that the pressure is greater than 31. MPa, and the slide valve type ultra-high pressure three-position four-way electromagnetic reversing valve currently on the market, under ultra-high pressure hydraulic pressure, clamps The force is large, which makes the reversing difficult. Compared with the slide valve type, the ball valve type ultra-high pressure electromagnetic reversing valve sold abroad has a larger pressure loss under the same diameter flow rate, and the valve port will be impacted after long-term use. Deformation, resulting in commutation f...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned situation, overcome the problem that the sliding valve structure is difficult to change direction under high pressure, and provide an ultra-high pressure three-position four-way electromagnetic directional valve with reliable direction change, sensitive action, and pressure up to 70MPa.

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