SU900032A1

SU900032A1 - Dust suppression device

Info

Publication number: SU900032A1
Application number: SU802935593A
Authority: SU
Inventors: Иван Григорьевич Легкодух; Константин Константинович Буймов; Николай Иванович Брюханов
Original assignee: Восточный научно-исследовательский институт по безопасности работ в горной промышленности
Priority date: 1980-05-30
Filing date: 1980-05-30
Publication date: 1982-01-23

Description

(54) УСТРОЙСТВО ДЛЯ ПЫЛЕПОДАВЛЕНИЯ(54) DEPOSITION DEVICE

1one

Изобретение относитс к горной промышленности и может быть использовано дл обеспыливани рудничного воздуха.The invention relates to the mining industry and can be used to dedust mine air.

Известно устройство дл пылеподавлени , включающее цилиндрический корпус, патрубок дл ввода жидкости, разбрызгиваюихие сопла, укрепленные в радиальных отверсти х на боковых стенках корпуса, и конический отражатель 1.A device for dust suppression is known, comprising a cylindrical body, a nozzle for introducing a liquid, spray nozzles fixed in radial holes on the side walls of the body, and a conical reflector 1.

Недостатком данного усройства вл етс низка эффективность пылеподавлени из-за отсутстви отсоса запыленного воздуха и большой расход воды.The disadvantage of this device is the low efficiency of dust suppression due to the lack of suction of dusty air and high water consumption.

Наиболее близким к предлагаемому техническим решением вл етс устройство дл подавлени пыли, которое состоит из водоподающего патрубка, расположенного по оси турбинки, снабженной разбрызгиваюш ,ими соплами, повернутыми под углом к оси вращени . На турбинку концентрично насажены внутренн крыльчатка и внещн крыльчатка, помещенна в корпус. Впереди внутренней крыльчатки расположен конфузор 2.Closest to the proposed technical solution is a dust suppression device, which consists of a water supply nozzle located along the axis of the impeller equipped with spraying nozzles rotated at an angle to the axis of rotation. The impeller is concentrically mounted on the inner impeller and the outer impeller placed in the housing. In front of the inner impeller is confuser 2.

Недостатком этого устройства вл етс низка эффективность, за счет недостаточной скорости пролета капель жидкости и большой расход жидкости на пылеподавление .The disadvantage of this device is low efficiency, due to the insufficient speed of the passage of liquid droplets and a large consumption of liquid for dust suppression.

Цель изобретени - повышение эффективности пылеподавлени и уменьшение расхода жидкости за счет изменени сечени выходного сопла насадки в зависимости от давлени жидкости.The purpose of the invention is to increase the efficiency of dust suppression and to reduce the fluid flow rate by changing the cross section of the nozzle outlet nozzle depending on the fluid pressure.

Поставленна цель достигаетс тем, что каждое сопло устройства снабжено подпружиненными поршн ми со сквозными отверсти ми и иглами, причем иглы установлены перед выходными отверсти ми сопел соосно с ними.This goal is achieved by the fact that each nozzle of the device is equipped with spring-loaded pistons with through holes and needles, with the needles installed in front of the outlet holes of the nozzles coaxially with them.

На фиг. 1 показано устройство дл пылеподавлени , разрез; на фиг. 2 - узел I на фиг. 1, разрез.FIG. 1 shows a dust suppression device, a slit; in fig. 2 — node I in FIG. 1, the cut.

Claims

The device for dust suppression includes a cylindrical body 1, a pipe 2 for supplying fluid to the spray nozzles 3 at an angle to the plane of rotation, a hydrojet impeller 4 that rotates in a bearing 5 located in the hub 6. A impeller 8 is mounted on the hollow shaft 7 of the hydrojet turbine 4 and the impeller with the impeller is rigidly fixed to each other and with the spray nozzles 3. The latter are equipped with a piston 9, in which there are through holes 10 located around the circumference, and the needle 11, located About the axis of the outlet in front of the nozzle 12 of the nozzle 3. The piston 9 is spring-loaded by a spring 13 on the side of the nozzle 12 and its mobility is limited by an annular abutment 14. The device operates in the following way. The fluid through the pipe 2 through the hollow shaft 7 enters the spray nozzles 3, then through the through holes 10 in the piston 9 to the nozzle 12. When the fluid flows out of the nozzles, as a result of their perpendicular arrangement to the axis of rotation and being set at an angle to the plane of rotation, torque Under the action of its hydro-reactive turbine 4 rotates in a bearing 5 located in the hub 6. A vacuum is created in the housing 1 of the device, resulting in the absorption of dusty air. The dusty air swirls and then shifts with drops of liquid discharged by the nozzles 3. In this case, dust is deposited on the wet surfaces of the impeller 8, then is thrown by centrifugal force to the body and flows in the form of sludge. The air flow arising from the rotation of the nozzles and impeller, together with the flow rate, provides a high degree of dispersion of water. At the same time, an irrigation plume is formed, which is directed to the center of dust formation. Each spray nozzle of the device is equipped with a piston 10 with a throttling needle 11. If the fluid pressure in the system suddenly exceeds the working one, the piston will move along the axis of the nozzle in the direction from the stops 14 to the nozzle 12, and the piston needle 11 will partially block the nozzle outlet section as a result the fluid flow rate does not increase, but as a result of a reduction in the cross section of the outlet opening of the nozzle 12, the flow rate of the liquid jet increases. This increases the reactive force in front of the nozzle, as a result of which the rotation speed of the impeller 8 increases, which allows more dust to be sucked in. This increases the efficiency of the device in 1.2-1.5 times. In cases where the nozzle outlet is clogged, then by specifically increasing the fluid pressure in the system with the needle piston, the nozzles can be cleaned. The proposed device will improve dust suppression efficiency, reduce irrigation fluid consumption and increase device reliability due to the elimination of cases of nozzle clogging. DETAILED DESCRIPTION OF THE INVENTION A device for dust suppression, including a cylindrical body, rigidly connected impeller and impeller, a water inlet and spray nozzles mounted on a hollow shaft, characterized in that, in order to increase the efficiency of dust suppression and to reduce the fluid flow by changing. sections of the nozzle outlet orifice, depending on the pressure of the liquid, the nozzles are provided with spring loaded holes with through holes and needles, with the needles mounted in front of the nozzle outlets sleep with them. Sources of information taken into account in the examination 1. USSR author's certificate number 338267, cl. B 05 B 3/02, 1969.

2. USSR author's certificate number 395598, cl. E 21 F 5/04, 1972 (prototype).