Positive pressure explosion-proof box body

Abstract

The present invention discloses a positive-pressure explosion-proof box body. The box body comprises a three-dimensional frame, the three-dimensional frame comprises two plane frames and four stand columns connected between the two plane frames, and a top box plate, a bottom box plate, a front box plate and a rear box plate are connected to the top, the bottom, the front face and the rear face ofthe three-dimensional frame respectively. Side box plates and a box cover are arranged on the two annular side faces of the three-dimensional frame respectively, annularly-arranged magnetic blocks arearranged on the annular side face, opposite to the box cover, of the three-dimensional frame, and the box cover is magnetically attracted to the three-dimensional frame. According to the box body, the positive pressure and pressure relief dual-pressure overload protection can be achieved, the safe work of the equipment in the explosion-proof box body is guaranteed; due to the magnetic connectionof the box cover, the box cover can be opened and closed quickly and easily, and convenience is brought to operation. The box body is particularly suitable for being used as a box body of a positive-pressure explosion-proof printing device, and a printer is installed in the box body, so that the paper adding, paper clamping and other treatment are convenient.

Description

technical field [0001] The invention relates to a positive pressure explosion-proof box body. Background technique [0002] Conventional explosion-proof equipment needs to be placed in an explosion-proof box and isolated from external hazardous places. For printers working in hazardous locations containing explosive gases, vapor mixtures or combustible dusts, in order to prevent the print head from generating instantaneous high temperature and high energy and igniting combustible gases and dusts, it is considered to be placed in an explosion-proof box. The printer needs to add paper, deal with paper jams, repair and other operations, all of which need to be unpacked. The utility model of Chinese patent application number 201620407752.4 discloses a touch screen positive pressure explosion-proof box. The box body is provided with a touch screen installation port, a cable hole and an air source hole. The touch screen is installed at the touch screen installation port, and the ...

AI Technical Summary

Problems solved by technology

The utility model of Chinese patent application number 201620407752.4 discloses a touch screen positive pressure explosion-proof box. The box body is provided with a touch screen installation port, a cable hole and an air source hole. The touch screen is installed at the touch screen installation port, and the communication cable passes through the cable hole. It enters the box and connects with the touch screen, and the gas source pipe passes through the gas source hole to fill the box with gas. The above-mentioned positive pressure explosion-proof box is inconvenient to open the box for maintenance.

At present, the box whose lid is fixed by magnetic suction generally does not have explosion-proof function.

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