Paint high pressure filter safety relief valve

Abstract

The invention relates to a safety relief valve for high-pressure paint filtering. The safety relief valve comprises a valve part and a filtering part. The valve part comprises a valve rod and a valve sleeve. The valve rod slides in the axial direction of the valve sleeve in a limiting manner. The filtering part is provided with an inlet, a pressure releasing backflow port and an outlet, all of which are used for controlling the flow direction of paint. A valve body of the valve part is located in a passageway between the inlet and the pressure releasing backflow port of the filtering part. The valve rod movably rotates relative to the valve sleeve. The rod portion of the valve rod is fixedly provided with a pin protruding in the radial direction of the valve rod. The valve sleeve is internally provided with a linkage block conducting sliding and positioning in the axial direction of the valve sleeve. A cam face in linkage with the pin is arranged at one end of the linkage block, and the other end of the linkage block abuts against a spring. The spring is pressed and limited in the valve sleeve to keep abutting on the linkage block. Through combination of a main valve body and the filtering part, dual functions of high-pressure paint filtering and pressure releasing are achieved. The pin is arranged on the valve rod in the main valve body, the pin slides along the cam face of the linkage block, and therefore when the valve rod is manually rotated, the valve rod slides relative to the valve sleeve in the axial direction, and manual opening or closing of the valve body is achieved.

Description

technical field [0001] The invention relates to the field of valves, in particular to a paint high-pressure filter safety relief valve. Background technique [0002] Pressure relief valve, also known as "safety valve", can realize automatic opening and closing function according to the working pressure of the system, and is generally installed on the equipment or pipeline of the closed system to protect the safety of the system. When the pressure in the equipment or pipeline exceeds the set pressure of the pressure relief valve, it will automatically open the pressure relief to ensure that the medium pressure in the equipment and pipeline is under the set pressure, protect the equipment and pipeline, and prevent accidents. Existing pressure relief valves have different requirements depending on the actual application environment. For example, the pressure relief valve in the high-pressure environment of paint, because the characteristics of the medium of the paint itself are...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above disadvantages, the present invention designs a paint high-pressure filter safety pressure relief valve, so that it can solve the technical problem that the existing similar pressure relief valves have a limited scope of application and are difficult to meet the use of paint in high-pressure environments.

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