Two-position two-way turntable type switching valve

Abstract

The invention relates to a two-position two-way turntable type switching valve and belongs to the field of hydraulic driving. A main structure comprises a valve body, a turntable and an end cap, wherein the valve body is fixed to a base, an oil inlet formed in the end cap coincides with the axis of an oil outlet of a pump body to ensure synchronization of an oil inlet moment of the oil inlet and an oil outlet moment of the oil outlet. The turntable is installed in the cavity formed by the valve body and the end cap, the rotary shaft of the turntable extends out of a central opening of the end cap, a key for being connected with a coupler is arranged at the shaft end, and the turntable can be driven by external power to rotate around its axis. In the rotating process of the turntable, arc-shaped grooves formed in the upper end face and the lower end face respectively enable an oil way between the oil inlet and an oil outlet to be communicated or disconnected at a front semi-cycle station and a rear semi-cycle station. Compared with other two-position two-way switching valves, the two-position two-way turntable type switching valve has the outstanding characteristic of good manufacturability. In addition, the two-position two-way turntable type switching valve has the advantages of being simple and compact in structure, high in reliability, high in working frequency, easy to seal, small in noise and the like and can be widely applied to a hydraulic system switched at high speed and adopting high-speed shock excitation.

Description

technical field [0001] The invention belongs to the field of hydraulic transmission, and in particular relates to a two-position two-way turntable switch valve. Background technique [0002] Hydraulic transmission is widely used in modern industry. On-off valve is an important control valve in hydraulic system, and its working performance has a very important influence on the whole hydraulic system. At present, most of the two-position two-way on-off valves commonly used in hydraulic systems are slide valve structures. There are oil inlets and oil outlets on the valve body, and the valve core has two stations, one of which is connected to the oil inlet and oil outlet. port, one station shuts off the connection between the oil inlet and the oil outlet. However, due to the complex structure and shape of the valve body and the valve core, high matching precision is required, resulting in high manufacturing process costs, difficult sealing, and loose structure. Improvement, hi...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems of traditional two-position two-way switching valve with complex structure, difficult manufacturing, difficult sealing and high cost, and seek a switching valve with compact structure, easy sealing and low working noise.

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