Novel valve core with spring seat

Abstract

The invention discloses a novel valve core with a spring seat. The novel valve core comprises a valve core rod body which is slidably assembled in a lower valve cavity of a valve body, wherein seven annular sealing bosses are arranged on the valve core rod body; the circumferential surface of each annular sealing boss is slidably matched with the inner peripheral wall of the lower valve cavity through liquid sealing; the tail part of the valve core rod body is integrally provided with the spring seat connected to a back face of the seventh annular sealing boss to form a novel spring seat valve core structure with the spring seat; a spring guide rod is arranged in the center of the spring seat; a compression spring is sleeved on the spring guide rod; the front end of the compression spring is abutted against and matched with a positioning annular face of the spring seat; the valve core rod body is abutted against and assembled in the lower valve cavity of the valve body through the compression spring; and a pressure adjusting spiral plug is spirally pressed at the rear end of the compression spring. The novel valve core has the advantages of simple structure, convenience in machining, low assembly requirement and capabilities of greatly improving the mounting success rate of a PVECVP valve and reducing the production and manufacturing cost, and has the characteristics of high mounting speed and stable performance.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to a valve core structure used in PVECVP series hydraulic valves, in particular to a new type of valve core with a spring seat. Background technique [0002] At present, the PVECVP valve is a combined valve with an upper and lower structure. The upper valve stem and the lower valve stem are respectively installed in the upper valve cavity and the lower valve cavity of the valve body. The tails of the upper valve stem and the lower valve stem are both arc structures. The tail of the arc structure is abutted in the spring seat cavity formed on the spring seat. In the prior art, the assembly success rate of the lower valve, especially where the lower valve stem is located, is relatively low. The reason for this is that the spring seat has a short guiding effect on the valve stem and the installation space is limited during the assembly process. If it falls off, there is not enough ...

AI Technical Summary

Problems solved by technology

In the prior art, the assembly success rate of the lower valve, especially where the lower valve stem is located, is relatively low. The reason for this is that the spring seat has a short guiding effect on the valve stem and the installation space is limited during the assembly process. If it falls off, there is not enough space for the screw plug to be tightened at the valve cavity port. If the screw is not tightened tightly, the sealing ring will lose its sealing effect. Therefore, how to solve the problem of frequent falling off of the spring seat and improve the assembly success rate of the valve is to improve the production efficiency of the valve and Premise of quality

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