Centralized-control type bubble atomizing dust removal device and method for tunnel respirable dust

Abstract

The invention provides a centralized-control type bubble atomizing dust removal device and method for tunnel respirable dust. An air compressor is connected to a gas inlet pipe and a gas storage tank. The gas storage tank is connected to a liquid storage tank and a gas side check valve. The rear end of the gas side check valve is sequentially connected with a rotor flow meter, a gas side needle valve and a gas side pressure gauge. One side of the liquid storage tank is connected to a water inlet pipe, and the other side of the liquid storage tank is sequentially connected with a filter, a plunger pump, a liquid side check valve, an electromagnetic flow meter, a liquid side needle valve and a liquid side pressure gauge. The rear end of the liquid side pressure gauge and the rear end of the gas side pressure gauge are together connected to a bubble atomizing spray nozzle. The devices between the gas side check valve and the gas side pressure gauge and the devices between the liquid side check valve and the liquid side pressure gauge are all installed in an instrument control box in a centralized mode. Thus, parameters in the dust removal device are adjusted and controlled more easily, rapidly and conveniently; lots of micro-grain-size fog drops are formed after atomizing is conducted through the bubble atomizing spray nozzle, a good collision effect is achieved for respirable dust floating in alleys, the dust removal efficiency is high, and the space safety and environment quality of coal mine alleys are improved.

Description

technical field [0001] The invention relates to the field of coal mine roadway dust control, in particular to a centralized control type air bubble atomization dust suppression device and method for roadway respirable dust. Background technique [0002] With the continuous improvement of coal mine mining intensity and mechanization, the dust production points and dust production volume of coal mine dust are also increasing, and fine particle size respirable dust (aerodynamic particle size ≤ 7.07μm) has become a threat to mine safety production and one of the serious disasters to the health of underground workers. More than 90% of the respirable dust inhaled by the human body is deposited on the trachea and alveoli, causing the blood in the alveoli to cause pneumoconiosis. Respirable dust has a high risk of explosion and will increase the risk of gas explosion. [0003] Many experts and scholars at home and abroad have conducted a lot of research on the theory and technology...

AI Technical Summary

Problems solved by technology

At present, the purification efficiency of conventional spray dust suppression technology for respirable dust is generally 20-40%, resulting in a high concentration of respirable dust in coal mine underground alleys, causing serious harm to the health of underground workers.

According to the theory of spray dust suppression, the main reason is that the particle size of the droplets ejected by the conventional spray dust suppression process is relatively large, which makes it difficult for the large particle droplets to capture the respirable dust in the air, and the dust suppression efficiency is low.

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