Liquid controlled multi-way valve

Abstract

The invention relates to a liquid controlled multi-way valve which pushes a large-path multi-way valve by using oil liquid, solving the defects that manual operation is high in labor intensity and low in efficiency in the prior art. Each valve block of a valve body is correspondingly connected with respective pilot control valves; the valve blocks are connected with control ports of a hydraulic device at different working states respectively, wherein one valve block is in differential connection with a differential valve block which can increase the flow. A plurality of valve blocks are connected to form the valve body, the valve body is connected with a pilot control valve, the pilot control valve can provide a larger output force to drive the multi-way valve to change the direction, thereby reducing the labor intensity of workers; the pilot control valve is high in control precision and rapid in direction change speed, and the differential valve block is arranged in the valve body so as to increase hydraulic oil input into equipment, thereby increasing the working speed of the equipment.

Description

technical field [0001] The invention relates to a hydraulic valve structure, in particular to a hydraulically controlled multi-way valve that uses oil to drive a large-diameter multi-way valve. Background technique [0002] The reversing valve is a valve that changes the on-off relationship of the oil passage connected to the valve body by means of the relative movement between the spool and the valve body. The multi-way reversing valve is a combined valve with more than two reversing valves as the main body. According to different work requirements, it can also be combined with auxiliary valves such as safety relief valve, check valve and oil filling valve. Compared with other types of valves, the multi-way reversing valve has the advantages of compact structure, small pressure loss, small sliding resistance, multiple functions, long life, and simple manufacture. [0003] In a hydraulic system with a large flow rate and controlled by a conventional large-diameter multi-wa...

AI Technical Summary

Problems solved by technology

[0005] The invention solves the disadvantages of high labor intensity and low efficiency of manual operation in the prior art, and provides a hydraulically controlled multi-way valve that uses a pilot control valve to control the multi-way valve, reduces the labor intensity of the worker's operation, and has high efficiency.

[0006] The present invention also solves the disadvantages of the multi-way valve in the prior art that the oil pump flow is fixed and the working speed of the equipment is low, and provides a hydraulic differential principle to return the hydraulic oil in the circuit back to the oil flow to improve the efficiency of the equipment. hydraulically controlled multi-way valve for working speed

[0007] The present invention also solves the disadvantages in the prior art that the valve body adopts conventional castings, which tends to have pores and sand holes, which reduces the service life, and provides a hydraulic control multi-way valve that uses steel castings and prolongs the service life.

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