High Pressure Safety Quick Shutoff Valve

Abstract

The invention relates to a high-pressure safety rapid shut off valve comprising a main valve. The main valve comprises a valve body, a valve cover arranged at one end of the valve body, a valve seat inlaid in the middle of an inner cavity of the valve body, and a valve clack in pressing fit with the valve seat. A valve rod is connected to the end portion of the valve clack. A first reset spring is arranged in an inner cavity of the valve clack. An end cover is buckled to the outer side of the valve clack. The high-pressure safety rapid shut off valve further comprises a pneumatic control device, wherein the pneumatic control comprises an air cylinder barrel, one end of the air cylinder barrel is provided with an air cylinder cover, the other end of the air cylinder barrel is provided with a partition plate, an air cylinder piston is arranged in the air cylinder barrel, a second reset spring is arranged between the air cylinder piston and the partition plate, a piston rod is arranged in the air cylinder barrel, one end of the piston rod is fixedly connected with the air cylinder piston, the other end of the piston rod sequentially penetrates through the partition plate and the valve cover to be fixedly connected with the valve rod, the air cylinder cover is provided with a first air source channel, and the valve cover is provided with a second air source channel. The high-pressure safety rapid shut off valve operates safely and reliably, saves energy and is low in operation cost.

Description

technical field [0001] The invention relates to a high-pressure shut-off valve for forging and extrusion systems of a hydraulic press and a high-pressure industrial water system of a steel mill, in particular to a high-pressure safety quick shut-off valve. Background technique [0002] The existing high-pressure quick shut-off valves on the market have the following technical problems during use: the main valve adopts a cone valve structure, and its control method is a two-valve distributor driven by an electromagnet through the working medium itself. Control the main valve. In this way, there are the following problems: [0003] 1. The cavitation and erosion of the valve under high-pressure conditions are very severe, causing the valve to not be shut off quickly, or the shut-off is not strict, which seriously affects the safety and energy saving of the system; [0004] 2. There are many electromagnetic control links, and the valve cannot be closed quickly, which greatly i...

AI Technical Summary

Problems solved by technology

[0003] 1. The cavitation and erosion of the valve under high-pressure conditions are very severe, causing the valve to not be shut off quickly, or the shut-off is not strict, which seriously affects the safety and energy saving of the system;

[0004] 2. There are many electromagnetic control links, and the valve cannot be closed quickly, which greatly increases the possibility of valve leakage;

[0005] 3. Because the electromagnet is energized for a long time, it is not only easy to burn out, but also consumes a lot of energy, which will cause noise pollution during use

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