SU900026A1 - Device for withdrawing dust from underground workings - Google Patents

Description

(5+) DEVICE FOR DUST CLEANING IN UNDERGROUND EMISSIONS

I

The invention relates to the mining industry and can be used to remove dust from the walls of mine workings.

A bridging device for removing dust from the walls of mine workings is known, including a dust-blowing, dust-collecting cleaning mechanism and a mobile SP platform.

The disadvantage of this device is its low dust collection and cleaning efficiency.

It is also known a device for cleaning dust in underground mines, including a mobile platform with a dust blower placed on it with an inlet nozzle and an exit nozzle made in the form of a slot channel connected to a windrower and a dust blower consisting of a suction nozzle, a fan and connected to its exhaust end of the air purification filter CZl.

The disadvantage of the known device is the large energy consumption for the operation of the device, the impossibility of using it in mines | hazardous gas and dust, and a large resistance device ventilation flow.

The purpose of the invention is to reduce energy consumption, to ensure that the device can be used in

10 mines, hazardous for gas and dust, and reduced resistance to ventilation flow.

This goal is achieved by the fact that the suction nozzle of the dust collector

Claims (3)

IS is made by a suction channel in the form of a slit, having an outer and an inner wall, the outer wall having a length longer than the inner one. At the same time, the device is equipped with additional channels communicating a dust collector intake nozzle with openings that are provided on the side surfaces of the dust collector body, and the cross-sectional area of the additional channels is equal to the cross-sectional area of the dust collector nozzle. The drawing shows a structural diagram of the device in a perspective view. The device includes a mobile platform 1 moved by an electric locomotive. 2. A dust collector is placed on the platform, consisting of a housing 3 with a dust-blower 4 mounted on it, an intake nozzle 5 and a suction channel 6 made in the form of a slit. The device has additional channels 7, which communicate the intake nozzle 5 with holes 8 made in the housing 3. The cross-sectional area of the additional channels 7 is equal to the cross-sectional area of the intake nozzle 5. The output nozzle of the dust blower is made in the form of an annular slotted channel and communicated through the bypass channels 9 with the inlet nozzle of the fan 10 of the dust blower. The end of the slotted duct of the dust-blower k consists of separate sections 11, which play the role of rotating vanes, which serve to direct the flow from the channel 12, which is placed by partitions (I 3, which serve to ensure even flow outflow throughout the entire channel. The suction channel 6 of the dust collector consists of the upper Ik, bottom 15, and communicating with the fan 16. The output end of the fan 16 is connected to the filter 17. The suction duct 6 of the dust collector is divided into sections by partitions 18, which serve to create a uniform suction speed. The device is installed in the generation with a gap of 19. The device operates as follows. The mine flow moving in the mine is partially (20: is sucked in by the fan 10 and, through channels 9 and 8, is injected into the slot duct 12 of the dust-blower k, forming an outlet along the whole perimeter a flat jet directed at an angle of 22.5-25 to the surface, blowing off axial dust. After passing in suspension, dust is enclosed between the wall k of the dust collector and the wall of the excavation. Part of the moving ventilation flow enters this dust-air mixture. Then this mixture (50 in total) with the help of the fan 16 through the slot 6 of the dust collector is sucked off and injected into the filter 17. The remaining 50 of the ventilation flow through the additional channels 7 is removed by the dust collector and sent to the mine. Due to the fact that the proposed device has a suction channel, fencing off its surface, the intake nozzle of the dust collector from the exit nozzle of the dust blower, the air jet from the dust blower in addition to its main function - cleaning the surface from dust, creates a flat air curtain between the unit and the surface, working all around the perimeter, blocking path to the dust collector for additional air flow and at the same time increasing the rate of increase of particles by the dust collector. Performing the proposed device with additional channels reduces the resistance to movement of the ventilation flow. Claim 1. A device for cleaning dust in underground workings, including a mobile platform with a dust collector placed on it, having an inlet and an outlet nozzle and a fan, a dust collector having a housing, an intake nozzle, a filter and a fan connected to the filter, characterized by that, in order to reduce energy consumption and enable the use of the device in mines, hazardous for gas and dust, the intake nozzle of the dust collector is made with a suction channel in the form of a slit, having external and internal walls, The outer wall has a length longer than the inner one. 2, the device according to claim 1, which is designed so that, in order to reduce the resistance to the movement of the ventilation flow, the device is made with additional channels that communicate the intake nozzle of the dust collector with openings that are made on the side surfaces of the dust collector body square