Two-dimensional pilot-type electromagnetic cartridge valve

Abstract

The invention discloses a two-dimensional pilot-type electromagnetic cartridge valve. A torsion spring is installed between a shell boss column and an armature; the armature is rotatably arranged in astator; a valve sleeve is connected to the stator; a valve core can axially move and is arranged in the valve sleeve; the right side of the armature is a discoid shape with uniformly distributed external teeth, and the external teeth of the armature are matched with internal teeth of the stator; a first oil guide block and a second oil guide block are inserted into circular through holes of the disc; the center of the first oil guide block is provided with an oil guide flow passage along the axial direction; a stator flow passage communicates with a first high pressure hole of the valve sleeve through the oil guide flow passage, a valve sleeve flow passage, and a first annular groove; the armature is provided with a rectangular clamping groove along the axial direction, and is alternatelyprovided with high-pressure grooves and low-pressure holes; the left end of a first central flow passage in the center of the armature communicates with the low-pressure hole on the right side of thedisc, and the right end communicates with the low-pressure through hole; the valve sleeve flow passage communicates the first annular groove and the oil guide flow passage; the left end surface of the valve sleeve is provided with a low-pressure flow passage communicating with an oil return port along the axial direction; the valve sleeve is sequentially provided with the first annular groove, the oil return port, an oil outlet, and a radial through hole from left to right; and the right end surface of the valve sleeve is provided with an oil inlet.

Description

technical field [0001] The invention belongs to a hydraulic control element in the field of fluid transmission and control, in particular to a two-dimensional pilot electromagnetic cartridge valve. Background technique [0002] In recent years, the two-dimensional electro-hydraulic switching valve using the principle of the servo screw mechanism has dual degrees of freedom of valve core rotation and axial movement, flexible control, high precision, fast frequency response, low hysteresis, small leakage, simple structure, etc. Advantages, currently mainly in aerospace, hydraulic industry and other fields. [0003] In recent years, the hydraulic cartridge valve technology has developed rapidly. The cartridge valve not only changes the system structure of the plate valve from the connection mode, but also has a simple structure, a small footprint, and solves the problem of leakage outside the system. After being widely used, the cartridge valve has gradually formed a series of...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that the electromagnetic cartridge valve on the market is limited by the volume and power consumption of the electromagnet, the thrust of the valve core is insufficient, especially difficult to work under high pressure conditions, and sensitive to oil pollution, etc., the present invention proposes a two-dimensional The miniature integrated two-dimensional electromagnetic switch valve is used as a pilot valve to push the two-dimensional pilot electromagnetic cartridge valve to move the valve core. The invention has the advantages of low power consumption of the electromagnet, light weight, fast response, and large direct drive force.

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