Overflow valve with detachable valve sleeve

Abstract

The present invention provides an overflow valve with a detachable valve sleeve. The overflow valve comprises a valve sleeve with a valve core inside, wherein one end of the valve sleeve is connected with an outer valve sleeve, one end of the outer valve sleeve is connected with a regulating sleeve, a screw sleeve is connected to one end inside the outer valve sleeve, a regulating lever is arranged in the regulating sleeve and connected with a mandril, the mandril is arranged in the outer valve sleeve, a spring is mounted on the mandril in a sleeving manner, one end of the mandril is connected with the valve core, and the other end of the spring is mounted on the valve core in a sleeving manner. The regulating sleeve is rotated to regulate the pressure, and an elastic cylindrical pin drives the regulating lever to rotate. The regulating lever and the screw sleeve form a connecting pair, therefore, the mandril is pushed to compress or loosen the spring to realize the pressure regulation function.

Description

technical field [0001] The invention relates to the technical field of hydraulic systems, in particular to a valve sleeve detachable relief valve used in hydraulic systems. Background technique [0002] The relief valve that must be used in the hydraulic system is a key valve used to establish and control the pressure in the hydraulic system. An existing cartridge overflow valve (patent publication number CN201420717) (see attached figure 1 The main hole of the valve body of ) is a deep and small hole structure. The rigidity of the tool is poor during processing, which leads to the inability to guarantee the accuracy of the hole after processing, which makes the pressure unstable during work, and sometimes the phenomenon of howling occurs. In actual production, the technical requirements for the process and the processor are relatively high. In addition, several different tools must be used for the regulating device, which is inconvenient in some places where the pressure ...

AI Technical Summary

Problems solved by technology

An existing cartridge overflow valve (patent publication number CN201420717) (see attached figure 1 The main hole of the valve body of ) is a deep and small hole structure. The rigidity of the tool is poor during processing, which leads to the inability to guarantee the accuracy of the hole after processing, which makes the pressure unstable during work, and sometimes the phenomenon of howling occurs. In actual production, the technical requirements for the process and the processor are relatively high

In addition, the adjustment device must use several different tools, which is not convenient in some places where the pressure needs to be adjusted directly and frequently.

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