Hand-operated direction valve

Abstract

The invention discloses a hand-operated direction valve. The hand-operated direction valve comprises an upper cover, a lower cover, a valve element and a control handle, and is characterized in that three pipe connectors are installed on the upper cover and include the left reversing pipe connector, the right reversing pipe connector and the middle vertical pipe connector; an oil inlet pipe connector is installed on the lower cover; the valve element in sliding fit with the surface of the upper cover and the surface of the lower cover is arranged between the upper cover and the lower cover and is a circular plate, and a round groove is formed in the outer edge of the valve element; a shaft hole is formed in the center of the valve element and connected with the control handle through a core shaft, two through holes are further machined in the valve element, sleeves capable of rotating along with the valve element to enable the upper cover pipe connectors and the lower cover pipe connector to be communicated are arranged in the through holes respectively, and sealing rings and compressed springs are arranged on the outer sides of the portions, in the upper cover and the lower cover, of the sleeves; and steel balls are arranged in the round groove in the outer edge of the valve element. The hand-operated direction valve has the advantages of being small in structure weight, high in strength, large in outlet pressure, stable in oil pressure, not prone to abrasion, stable and reliable in reversing rotation, long in product service life, wide in application range and the like.

Description

technical field [0001] The invention belongs to an accessory device of a hydraulic reversing valve, in particular to a three-position, four-way manual reversing valve whose maximum pressure can reach 50 MPa. Background technique [0002] As we all know, manual reversing valve is a general accessory of hydraulic products, and various types of manual reversing valves can be purchased at any time according to design requirements in the domestic and foreign markets. However, such products are usually large in size, low in pressure, and the pressure does not exceed 20MPa. It is prone to pressure leakage and leaks. Due to the high rotation frequency of the reversing valve, its rubber seal is easy to wear, which will cause pressure leakage of the valve body and affect the normal operation of the hydraulic system. Contents of the invention [0003] In order to solve the above technical problems, the present invention proposes a manual reversing valve, which is sealed with a sphe...

AI Technical Summary

Problems solved by technology

However, such products are usually large in size, low in pressure, and the pressure does not exceed 20MPa.

Prone to pressure leaks and leaks

Due to the high rotation frequency of the reversing valve, its rubber seal is easy to wear, which will cause pressure leakage of the valve body and affect the normal operation of the hydraulic system

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