Automatic closing device and reaction device

Abstract

The invention discloses an automatic closing device and a reaction device. The closing device includes an air intake system. The air intake system includes an air intake pipe, an anti-backflow sealing ring and an anti-backflow limiting member. The anti-backflow sealing ring is installed in the lumen of the air intake pipe. , the anti-backflow sealing ring has an air inlet, the two ends of the inlet pipe are connected through the air inlet, the anti-backflow limiter is located in the inlet pipe, and the anti-backflow limiter has a working position and a non-working position, wherein the working position is The anti-backflow limiter closes the air inlet, and the non-working position refers to the space between the anti-backflow limiter and the anti-backflow sealing ring. The reaction device includes the automatic closing device. The structure of the automatic sealing device is simple and reasonable, convenient for manufacturing and processing, and the processing cost is low. At the same time, the anti-backflow effect of exhaust gas is good, the exhaust gas is not easy to leak, the entire automatic sealing device is not easy to be damaged, and has a long service life.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to an automatic sealing device and a reaction device. Background technique [0002] At present, in the existing chemical production process, it is necessary to blow gas into the reaction equipment for reaction. When the reaction equipment is in a rolling and rotating dynamic state or in a static state, through the design of the reverse air supply system and the wind speed control, the air is blasted from the tail to supply air to the materials in the reaction equipment intermittently. , the air pressure in the main reaction equipment increases. When the blower stops supplying air, because the air pressure in the main reaction equipment is higher than the atmospheric pressure, the waste gas in the main reaction equipment will flow back along the air supply system, resulting in waste gas leakage and polluting the air environment. The prior art adopts a simple check valve or a one-wa...

AI Technical Summary

Problems solved by technology

The inventor found in the research that the anti-backflow device of the valve of the traditional air supply system has at least the following disadvantages during use: the use of check valves or one-way switches will seriously reduce the diameter of the air supply pipe, resulting in insufficient ventilation capacity, and It is easy to be damaged, causing a large amount of exhaust gas leakage; the use of check valves or one-way switches cannot be tightly closed, and a small amount of exhaust gas leakage will always occur under normal circumstances; the production is complicated, the use and maintenance are inconvenient, and the cost of use is high

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