A fully mechanized mining face active magnetized water dedusting atomization nozzle and dedusting method

Abstract

The invention discloses a dust removal and atomization nozzle for active magnetized water of a fully-mechanized face, and a dust removal method thereof. The dust removal and atomization nozzle comprises a nozzle cap, an atomization and mixing cavity, a spiral water quantity adjustor, cross gap diaphragms, a mist spray hole, a nozzle base, water outlet holes and a nozzle inner cavity, wherein the lower end of the nozzle base is connected with each nozzle arrangement device through a thread; the nozzle inner cavity is arranged in the nozzle base; the nozzle cap is installed on the nozzle base through a thread; the mist spray hole is arranged in the top end of the nozzle cap; the spiral water quantity adjustor is arranged in the nozzle cup; the spiral water quantity adjustor is in streamline transition connection with the nozzle inner cavity; an adjustment nut is arranged at the top end of the spiral water quantity adjustor; the water outlet holes are arranged in the circumference of the side surface of the spiral water quantity adjustor; and the cross gap diaphragms are arranged at the lower end of the nozzle inner cavity. The dust removal and atomization nozzle is low in water consumption, capable of avoiding magnetic shield, easy to adjust a water quantity, good in dust removal and atomization effects, convenient to maintain, and applicable to dust removal for the active magnetized water of the fully-mechanized face, thus the dust removal efficiency is increased.

Description

technical field [0001] The invention relates to an active magnetized water dedusting atomization nozzle for a fully mechanized mining face and a dedusting method thereof, belonging to the technical field of mine dedusting. Background technique [0002] With the continuous enhancement of the mechanization degree of underground fully mechanized mining in coal mines, the amount of coal dust produced has also increased significantly, especially the content of respirable dust below 5um has increased significantly with the enhancement of coal mining crushing degree, resulting in underground fully mechanized mining. The working environment at the working face further deteriorated, seriously affecting the physical and mental health of coal miners. According to the survey, 70-85% of the coal dust in the fully mechanized mining face is produced by the shearer. For the dust at the coal machine, water spray is mainly used to prevent and control the dust at the coal machine. Apart from ...

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Problems solved by technology

For the dust at the coal machine, water spray is mainly used to prevent and control the dust at the coal machine. Apart from the physical and chemical properties of the water itself, another important factor is the nozzle used for the spray. The nozzles of the coal mining machine mainly use nozzles with a large water outlet diameter, which leads to the inability to efficiently realize the atomization of water droplets, and the control effect on respirable dust is not good; especially for the outer spray nozzle of the coal mining machine, because the installation angle of the outer spray nozzle is relatively single, although the dust removal The amount of sprayed water is large, but the water mist cannot fully cover the dust source, which eventually leads to unsatisfactory dust control effect

At present, in order to solve this problem, air-water spray nozzles are used for spraying and dust removal, such as patent application number: CN201310607997.2. However, this nozzle must have an air supply pipe to supply air to it. Due to the limited capacity of the shearer cable trough, the air supply pipe Adding greatly affects the movement of the cable trough and affects the production of coal mines; another example is the patent application number: CN02111535.4, whose internal rotating structure is very complicated, which is not conducive to nozzle maintenance. Therefore, in order to reduce the dust concentration at the main dust-producing points of the mine, improve Dust removal efficiency, it is urgent to design a new type of nozzle and dust removal method with less water consumption, good dust removal and atomization effect, easy maintenance and suitable for active magnetized water dust removal in fully mechanized mining face

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