Coal shearer spray range adjustable inner spray device

Abstract

The invention relates to a coal winning machine inner spray device with an adjustable spray range. The invention mainly aims at solving technical problems such as effective dedusting. The invention adopts a technical scheme that: the device is provided with a positioning toggle assembly which is respectively connected with a water inlet end of a water pipe assembly and a positioning hole of a drum bearing seat; a water commutation plate is fixedly arranged on a water outlet end of the water pipe assembly; and an arc commutation water tank of the plate communicates with a gland water hole set of a rinsing gland of the drum. The device is suitable for various drum-type coal mining machines.

Description

Technical field: [0001] This invention relates to a dredging or other part of a machine for the complete removal of ore from a mine bed, and more particularly to an apparatus for preventing or removing ore dust. Background technique: [0002] Existing coal shearers use the picks of the drum to break the coal seam and drop coal, which has a high rate of pulverized coal output and large coal dust. In mines, coal dust is not only a serious source of explosion, but also a source of pneumoconiosis, which is extremely harmful. In response to this, the industry adopts an internal spraying technology solution on the dust-reducing drum. Its typical structure is like the internal spraying device of the JOY-7LSIA coal shearer in the United States. The device includes a water supply system, hoses, water pipe joints, water pipes, and water Gland, water passing ring, water passing holes and nozzles on the drum body, the water supply system supplies downhole water into the water pipe throu...

AI Technical Summary

Problems solved by technology

[0003] During the actual drum cutting operation, take the left drum as an example. The left side of the drum faces the wall of the coal seam. During the cutting process, the cutting teeth on the drum that contact the wall of the coal seam will generate cutting dust production areas and floating coal dust. zone, these two sections are usually no more than 260° on the drum circumference, and the above-mentioned existing coal shearer internal spraying device is to spray water on the entire circumference (360°), that is, nearly 1 / 3. The water is sprayed in the non-cutting dust producing area and the floating coal dusting area, which is not only useless for dust reduction, but also causes a waste of water resources; at the same time, under the condition of a certain amount of water supply, the 360° water spraying of the drum circumference The spray water pressure and water volume of the nozzle outlet are small, which weakens the dust reduction effect of the inner spray device. At the same time, each nozzle is often blocked by coal powder in actual use, which further weakens the dust reduction function of the inner spray device. , also exists on the right drum

[0004] Due to the poor effect of the existing internal spray, the amount of dust in coal mining work is still very large. The industry also adopts technical solutions such as external spray auxiliary dust reduction or external auxiliary dust reduction. However, the diffused dust will fly with the wind on the working face and cannot be obtained Timely and effective dust suppression effect

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