Integral multi-way reversing valve

Abstract

The invention relates to an integral multi-way reversing valve, which comprises an operating handle, a valve body, an end cover and a front cover, wherein the upper end of an operating rod is connected with the handle, while the lower end is connected with a pin shaft through screw threads; the upper part of the pin shaft is provided with a clamp nut, and the lower part of the pin shaft is connected with the end cover through pins; a valve rod is arranged inside the valve body, a plug hole is formed outside the valve body, and two ends of the valve body are connected with the end cover and a front cover thread respectively; and a spring, a stroke gasket and a retainer ring are arranged in the end cover. The integral multi-way reversing valve has the following advantages that: an oil inlet valve body, a reversing valve body and an oil return valve body are integrated by adopting an integral casting process, and small mass, simple appearance and smooth transition of the cavity of the valve enable a complex flow passage not to affect the pressure loss of liquid so as to well control the loss of oil pressure, shorten the time of hydraulic oil flowing through the valve body and ensure the purity of the hydraulic oil; castings have good compactness and high bearing pressure; and the problem of leakage between sheets of a sheet valve does not exit.

Description

Technical field [0001] The invention relates to an integral multi-way reversing valve. Background technique [0002] At present, the multi-way directional valve on the market, due to its strong versatility and high operating pressure, is widely used in hydraulic systems such as engineering machinery, mining and metallurgical machinery, crane transportation machinery and light industry machinery, as a direction control device, The multi-way reversing valve is divided into machining channel and casting channel from the flow channel method, and into the chip valve and the integral valve from the overall perspective. However, the pressure loss of the chip valve is often large during the use process. , The oil temperature rises quickly, and the leakage between the plates is not good due to the poor sealing, and the leakage will inevitably cause problems such as oil pollution. There are no integrated cast runner directional valves among domestic manufacturers. The overall multi-way re...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an integral multi-way reversing valve to overcome the large pressure loss, rapid oil temperature rise, and leakage between the plates during the use of the existing plate-type multi-way reversing valve. The problem of large amount and easy contamination of oil

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