A resettable spring-type blasting safety valve

Abstract

The invention discloses a resettable spring type blasting safety valve, which comprises a valve body, a valve seat and a valve core used for movable sealing of the internal flow channel of the valve seat. , reset screw, load spring and limit seat, the limit seat is located in the installation sleeve, one side of the limit seat is connected with the valve core, the load spring is installed between the adjusting screw sleeve and the limit seat, and the upper end surface of the limit seat is processed with Sliding hole, the side wall of the limit seat is processed with a perforation connected with the sliding hole, a reset block is arranged in the perforation, the upper part of the reset screw is threaded with the adjusting screw sleeve, and the lower end of the reset screw penetrates into the sliding hole, the installation The limit assembly is installed on the cover. The present invention can ensure that the valve core and the load spring are in a blasting locked state in case of overloading, and will not cause the valve core to move back and forth under the action of the load spring and continue to bear the impact of overload, thereby ensuring the performance of the valve core and the load spring And life to maintain a better state.

Description

technical field [0001] The invention relates to the technical field of safety valves, in particular to the technical field of safe operation of high-pressure fluid equipment, and more specifically to a resettable spring type blasting safety valve. Background technique [0002] At present, in the field of safety valve technology, especially safety valves involving high-pressure fluid equipment such as water jet or air flow, once the fluid pressure is overloaded, it will cause great impact damage to the corresponding components in the valve body, especially the valve core and spring. , the reason is that the pressure of the fluid is overloaded or after overloading, and the pressure value of this overload cannot be kept constant to a certain range, which will cause the valve core to move back and forth under the dual action of fluid pressure and spring force, which will not only make the valve core The plugging end of the spring is subjected to continuous overload impact, which...

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of safety valve technology, especially safety valves involving high-pressure fluid equipment such as water jet or air flow, once the fluid pressure is overloaded, it will cause great impact damage to the corresponding components in the valve body, especially the valve core and spring. , the reason is that the pressure of the fluid is overloaded or after overloading, and the pressure value of this overload cannot be kept constant to a certain range, which will cause the valve core to move back and forth under the dual action of fluid pressure and spring force, which will not only make the valve core The plugging end of the valve is subjected to continuous overload impact, which will also have a great impact on the performance of the spring, resulting in unreliable or greatly reduced subsequent pressure control accuracy.

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