Adjustable jetting support for dust control of comprehensive mechanized excavation surface of mine

Abstract

An adjustable jetting support for dust control of a comprehensive mechanized excavation surface of a mine comprises a support plate and a plurality of connecting lugs. A plurality of input port through holes are disposed in the middle of the support plate at intervals, delivery pipes penetrate through the input port through holes, strip-shaped holes are disposed on two sides of each input port through hole, an elongated bolt is arranged in each strip-shaped hole, a sprayer mounting branch pipe connected with a corresponding input pipe is disposed at the front of each input port through hole of the support plate, branch pipe fixing lugs are arranged on the upper side and the lower side of each sprayer mounting branch pipe and are respectively sleeved on the corresponding elongated bolts, each elongated bolt is provided with an adjusting nut used for fixing and adjusting the distance from the corresponding sprayer mounting branch pipe to the support plate, and a plurality of sprayers are disposed on the sprayer mounting branch pipes. The adjustable jetting support is applicable to treating high-concentration dust by the aid of dust falling media such as water mist, foam and the like when an underground coal mine comprehensive mechanized heading machine cuts and crushes coal rocks, dust falling efficiency and utilization rate of the dust falling media are increased, and the adjustable jetting support is simple in structure, simple and convenient in operation and easy to repair and replace.

Description

technical field [0001] The invention relates to an adjustable spray support for mines, in particular to an adjustable spray support suitable for the prevention and control of dust in fully mechanized mine excavation. Background technique [0002] At present, the prevention and control of flour dust disasters in fully mechanized excavation mainly adopts spraying inside and outside the roadheader, dust removal fan, ventilation and dust removal, and new foam dust reduction technology. One of the key points in water mist and foam dust suppression is to spray the dust suppression medium to the best dust suppression position to effectively block, capture and settle the dust. However, due to the design and processing of these devices and the limitations of the downhole environment, the arrangement and protection of water mist and foam nozzles are often not in place, so that the sprayed dust suppression medium cannot effectively block, capture and settle the dust, resulting in the p...

AI Technical Summary

Problems solved by technology

However, due to the design and processing of these devices and the limitations of the downhole environment, the arrangement and protection of water mist and foam nozzles are often not in place, so that the sprayed dust suppression medium cannot effectively block, capture and settle the dust, resulting in the prevention of dust fall. Unsatisfactory effect

For example, if the height of the spray support is too high, it is easy to touch the top support beam, which affects the excavation of the upper coal and rock, and the nozzle (nozzle) is easily damaged by falling coal (rock), and the dust reduction effect is too poor when cutting the upper coal and rock. The bottom nozzle is easy to be blocked when excavating the lower coal seam, which seriously affects the effect of dust suppression on the excavation surface

[0003] In addition, the existing spray brackets or devices used in the prevention and control of mine dust in fully mechanized excavation have basically fixed spray angles and cannot be adjusted. They can only spray according to the set angle. The spray effect is not ideal and cannot be realized. Effective packaging of dust sources, poor adaptability to various excavation environments, and can no longer meet the dust control requirements of excavation working faces

[0004] In addition, the dust suppression nozzles are generally installed on an integral nozzle bracket. Due to the different positions, the outlet pressure of each nozzle is often different. For example, the outlet pressure of the nozzle near the dust suppression medium inlet is high, and the outlet pressure of the nozzle far away from the dust suppression medium inlet is small; Another example is that the outlet pressure of the upper nozzle is small, while the outlet pressure of the lower nozzle is relatively high due to gravity and other effects. Therefore, it is difficult for each nozzle to achieve the best effect at the same time, and it also seriously affects the effect of the dust suppression medium on the dust source. valid package for

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