Blasting pin safety valve

Abstract

The invention discloses a blasting pin safety valve which comprises a pressure relief opening, a valve element and a blasting pin. A two-way curved neck is fixedly installed on the top of a connection base, the two sides of the top of the two-way curved neck are each provided with a safety valve body through a bolt, and one side of the safety valve body is provided with the pressure relief opening. Use is convenient due to the arrangement of a pressing plate. The pressing plate is an up-down movable device. One side of each of two corners of one diagonal of the pressing plate is provided with a small bolt. The two sides of the pressing plate are provided with four circular holes corresponding to supporting columns of the pressing plate. The other sides of the two small bolts are embedded into the inner sides to the circular holes. When the pressing plate is adjusted, the two small bolts are loosened at first, then, the pressing plate is pushed up and down, the height position can be adjusted, the two small bolts are rotated after the height is adjusted to jack the supporting columns of the pressing plate, and therefore fixing is achieved. When different blasting pressures need to be used, blasting pins with different lengths can be used. The blasting pin manufacturing difficulty is lowered, and installation is convenient.

Description

technical field [0001] The invention relates to the technical field of blasting safety valves, in particular to a blasting pin safety valve. Background technique [0002] The safety valve is a pressure relief safety device that can automatically open when the pressure in the device, equipment, container or pipeline exceeds the set pressure, remove the internal medium, and prevent the pressure from continuing to rise and cause damage. The safety valve can be divided into: 1. Reclosing type, which allows multiple actions, and can ensure the sealing performance when closing and the next normal opening, such as spring type safety valve; 2. Non-reclosing type, that is, only one-time Action, parts need to be replaced after the action is completed. [0003] The inventors found that the existing non-reclosed type mainly uses a bursting disc device, which is generally composed of two parts: a bursting disc assembly and a holder. It is time-consuming to replace the piece, sometimes ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a blasting pin safety valve to solve the problem that the pressing plate of the existing blasting pin safety valve proposed in the above background technology is fixed, and the height cannot be adjusted up and down, so only a fixed-length blasting pin safety valve can be used. pin, then the thickness of the blasting pin needs to be changed according to the required blasting pressure. When the blasting pressure to be used is smaller, the blasting pin needs to be thinner, but such a blasting pin is difficult to manufacture and inconvenient to install.

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