Single-spool multi-functional valve and function adjusting method thereof

Abstract

The invention provides a single-spool multi-functional valve and an adjusting method thereof. The single-spool multi-functional valve comprises a valve cover, a valve body, an adjusting rod, a valve rod, a lock nut, a valve core, a valve sleeve, a limit sleeve and a spring, wherein the valve cover is detachably fixed on the valve body; the valve sleeve is arranged inside the valve body; the valvecore is arranged at the lower part in the valve sleeve; the limit sleeve is arranged at the upper part in the valve sleeve; the spring is arranged in the valve core; the upper end of the spring is connected with the valve rod; the valve rod is in contact with the end surface of the adjusting rod; the adjusting rod passes through the valve cover; the lock nut matched with the adjusting rod is arranged at the upper end part of the valve cover, and the lock nut is used for fixing the adjusting rod at a preset position; by adjusting the distance of the adjusting rod protruding from the valve cover, the multi-functional valve has a cut-off function, a throttle function and a pressure limiting function with adjustable pressure; and the number of the adjusting rod, the valve rod and the valve core are all one. By adopting the technology of the function integration of a stop valve, a positive throttle reverse check valve, an adjustable opening pressure check valve and a safety valve is realized through the single valve core, the single valve rod and the single spring, the multi-functional valve is widely used.

Description

technical field [0001] The invention relates to the technical field of fluid transmission, in particular to a single-spool multifunctional valve and a method for adjusting its function. Background technique [0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters (temperature, pressure and flow) of the conveying medium. Check valves, also known as check valves or check valves, are used in hydraulic systems to prevent reverse flow of oil flow, or in pneumatic systems to prevent reverse flow of compressed air. A throttle valve is a valve that controls fluid flow by changing the throttle section or throttle length. The globe valve relies on the pressure of the valve stem to make the sealing surface of the valve core and the sealing surface of the valve seat fit closely to prevent the flow of medium. The safety valve is a special valve whose opening and closing parts are in a normally closed state unde...

AI Technical Summary

Problems solved by technology

The above-mentioned valves are commonly used valves in the prior art, and each valve has only its unique characteristics and is not universal

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