Self-adsorption air type foam dust suspension system for coal mining working face

Abstract

The invention discloses a self-adsorption air type foam dust suspension system for a coal mining working face, and is particularly suitable for dust control of comprehensive mechanized coal mining working faces or comprehensive mechanized caving working faces. The self-adsorption air type foam dust suspension system mainly comprises components such as a high pressure water pipe, a pressure regulation valve, a liquid storage tank, a foaming agent adding device, a self-adsorption air rotational flow foaming device, a regulating valve and a circular arc foam spray head, wherein pressure water in a dustproof water supply system of the coal mining working face is jointed with the high pressure water pipe and regulated to proper pressure by virtue of the pressure regulation valve; the foaming agent in the liquid storage tank is automatically sucked into a water pipeline by virtue of the foaming agent adding device to form a foaming agent solution; and because gas phase-liquid phase foam is prepared by the self-adsorption air rotational flow foaming device arranged on a coal mining machine, the circular arc foam spray head is used for ejecting the foam to a left rolling cylinder and a right rolling cylinder of the coal mining machine for slicing dust sources. The system has a simple structure, and is convenient to mount and operate, safe and reliable; and moreover, a pressure ventilation pipeline is not needed, electric parts are not included, and the dust control effect of the coal mining working face can be improved.

Description

technical field [0001] The invention relates to a self-suction air-type foam dust suppression system for a coal mining face, and is especially suitable for controlling dust disasters at fully-mechanized mining face and fully-mechanized caving face in underground coal mines. Background technique [0002] Coal mining face is the most important dust production point in modern mines, and its dust production usually accounts for 45% to 80% of the total dust production in all production links of coal mines. Among them, coal cutting by coal shearer is the most important dust-producing process in fully mechanized mining face or fully mechanized caving face, accounting for more than 70% of the total dust production in the entire mechanized coal mining face. Threats to the physical and mental health of operators and the safe production of mines, therefore, coal cutting by coal shearers is the top priority of dust prevention work on mechanized coal mining face. In order to prevent the...

AI Technical Summary

Problems solved by technology

However, in fully mechanized mining or fully mechanized caving working faces, there is usually no compressed air pipeline that can reciprocate with the shearer body and move in real time, and the space available for placing equipment on the shearer body platform is quite limited, while the traditional Foam dust suppression equipment needs to lay pressurized air pipelines to provide compressed air for the foam generator, which occupies a large space, and is complicated to operate and low in reliability. It cannot be implemented on coal shearers, which greatly hinders the use of foam dust suppression technology in fully mechanized mining Application of fully mechanized caving face

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