Ventilation and purification device for underground driving working face and use method of ventilation and purification device

Abstract

The invention relates to the technical field of underground dust removal and ventilation, in particular to an underground driving working face ventilation and purification device and a use method.The underground driving working face ventilation and purification device comprises an air duct, a detection frame is arranged at the top of the air duct, a sensing system is arranged outside the detection frame, and a dust collection unit is arranged in an inner cavity of the air duct; compared with an existing ventilation and purification device for the driving working face, when air suction is conducted on the driving working face through an air duct, the head-on collecting assembly can accelerate the air suction speed of the air duct, on the other hand, the head-on collecting assembly can be close to the area, with large dust, of the driving face, accurate suction is achieved, and the dispersion speed of dust is reduced; dust in the air is removed from the underground driving working face through the atomization dust removal assembly; the head-on collecting assembly is close to the heading face of the dust raising position and assists the air duct in adsorbing and discharging air.

Description

Technical Field

[0001] The present invention relates to the technical field of underground dust removal and ventilation, and in particular to an underground excavation working face ventilation and purification device and a use method thereof. Background Art

[0002] The excavation working face, also known as the excavation head, refers to the first tunnel mined in preparation for the mining working face; the excavation face requires dust removal and ventilation in order to reduce the dust concentration in the workplace, dilute toxic and harmful gases, and discharge the dust-laden air with the air flow.

[0003] The prior art discloses a Chinese patent with application number CN202311449392.5, which is a ventilation and dust removal purification device for a coal mine heading working face. It also discloses a switching motor switching rotating plate and the position of the dust filter, so that the clean dust filter is located at the upper part of the filter chamber, and the dust filter with dust adhered is located at the lower part of the filter chamber and is cleaned by a cleaning mechanism. The dust filters on the upper and lower sides are separated by a rotating plate, so that dust filtering and dust cleaning can be performed simultaneously.

[0004] Although the above device can achieve ventilation and dust reduction, it still has some defects in use: When dust removal and ventilation are performed on the excavation face underground, the position of the excavation face is constantly changing, so the position of the dust on the mining face is also changing. The above-mentioned device cannot perform targeted dust removal and ventilation according to the excavation position, and cannot control the intensity of dust removal according to the on-site conditions. Summary of the Invention

[0005] The purpose of the present invention is to provide a ventilation and purification device for an underground excavation working face and a method of use, so as to solve the technical problem of performing targeted dust removal and ventilation according to the on-site conditions during underground excavation proposed in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A ventilation and purification device for an underground tunneling working face comprises an air duct, a detection frame is provided on the top of the air duct, a sensing system is installed on the detection frame and connected to the outside, a dust suction unit is provided in the inner cavity of the air duct, an atomizing dust reduction component is provided on the front side of the air duct for reducing dust during underground tunneling, and a head-on collection component connected to the air duct is arranged circumferentially on the outside of the air duct.

[0007] Preferably, the atomizing dust reduction component includes a hollow frame located on the inner wall of the wind tube and arranged in a circular direction, a circular frame is installed between the multiple hollow frames, a plurality of circular control frames are provided on the circular frame, a control plate is slidably installed in the middle of the control frame, a rotating ring is provided on the outside of the circular frame, which is rotatably connected to the wind tube through an electric slider, and a plurality of pushing plates are arranged on the rotating ring, and the plurality of pushing plates are rotatably connected to the plurality of control plates respectively.

[0008] Preferably, one side of the regulation board is fixedly installed with a connecting board. A fixing piece is fixedly installed on the front side of the connecting board. A shaft rod is rotatably installed on the fixing piece. A direction-adjusting wheel is provided on the shaft rod at the middle part of the fixing piece. Flip brackets are fixedly installed at both ends of the shaft rod. An atomizing nozzle is jointly installed between the two flip brackets. A guiding frame is provided on the connecting board. A rack meshing with the direction-adjusting wheel is slidably installed in the guiding frame. One end of the rack is provided with a pushing frame, and the middle part of the pushing frame is hollow.

[0009] Preferably, a rotating cylinder is rotatably installed in the inner cavity of the air duct through an electric slider. Threads are provided on the inner side of the rotating cylinder. An inner ring is rotationally installed on the inner wall of the rotating cylinder through threads. A plurality of circumferentially arranged limiting rods are fixedly installed on the inner wall of the air duct. The limiting rods penetrate and slide in the inner ring. A plurality of control boards are provided on the inner side of the inner ring. An internal part is provided on the side of the control board away from the inner ring, and the internal part slides in the middle of the pushing frame.

[0010] Preferably, a water supply tank is provided at the rear side of the air duct. A plurality of circumferentially arranged conveying pipes are provided on the water supply tank. One end of the conveying pipe is fixedly installed with a hose, and the end of the hose away from the conveying pipe is fixedly connected to its corresponding atomizing nozzle.

[0011] Preferably, the dust collection unit includes a moving groove opened on the air duct. A moving plate is slidably installed in the moving groove through an electric slider. An air suction fan is fixedly installed on the moving plate. When the air suction fan is turned on, a swirling suction force is generated inside the air duct, so that the air duct sucks the dust generated on the tunneling face. The air suction fan is located at the center between the plurality of conveying pipes. A dust collection hopper is detachably installed below the air duct.

[0012] Preferably, a baffle with a circular hole in the middle is provided at the rear part of the air duct. A filter plate is detachably installed inside the baffle. A discharge pipe connected to the baffle is provided on one side of the filter plate. The other end of the discharge pipe is placed above the well. A U-shaped frame fixedly connected to the air duct is provided around the baffle. A clamping groove is circumferentially opened around the baffle. A sliding rod is slidably installed in the middle of the U-shaped frame. A clamping block is fixedly installed at the bottom of the sliding rod.

[0013] Preferably, the face collection assembly includes multiple groups of circumferentially arranged track frames. A positioning frame is slidably installed in the middle of each group of track frames through an electric slider. A middle part is rotatably installed in the middle of the positioning frame. A collection pipe is fixedly installed on the upper part of the middle part. The multiple collection pipes are convenient for increasing the dust collection efficiency when the air duct sucks dust underground, and at the same time quickly regulating the dust collection distance. A conduction pipe connected to the air duct is provided at the bottom of the middle part. <\

[0014] Preferably, mounting frames rotatably connected to the air duct are provided on both sides of the air duct. A telescopic rod is fixedly installed at the rear part of the mounting frame. A rotating frame is jointly installed between the two telescopic rods. A support is provided below the rotating frame. The support and the rotating frame are rotationally connected through a motor.

[0015] Another object of the present invention is to provide a method for using a ventilation and purification device for an underground excavation working face, comprising the following steps: S1: Atomization dust suppression: The opening of the atomizing nozzle suppresses the flying dust on the underground excavation face by atomizing, reducing the dust dispersion tendency. The angle rotation of the flip frame drives the atomizing nozzle to continuously change the range of dust reduction during atomization, thereby enhancing the dust reduction range. S2: Dust removal and ventilation: The suction fan is turned on to form a vortex in the air cylinder to discharge the air underground. The head-on collection unit is used to enhance the accelerated discharge of the underground air cylinder. The air is sucked into the mine through the existing suction device to complete the gas exchange underground.

[0016] Beneficial effects of the present invention: 1. Compared with the existing ventilation and purification devices for tunneling working faces, the present invention provides a head-on collection assembly when the wind duct sucks air from the tunneling working face. On the one hand, it can assist the wind duct in sucking air from the tunneling working face. On the other hand, the head-on collection assembly is moved closer to the dusty area on the tunneling face, thereby accurately sucking the air from the tunneling face and reducing the dust diffusion rate. At the same time, the head-on collection assembly rotates, and the range of air suction on the tunneling face can be changed differently, thereby increasing the range of air suction on the tunneling face and improving ventilation and dust removal on the underground tunneling face.

[0017] 2. When the present invention uses an atomizing dust reduction component to reduce dust in the air of an underground excavation working face, the atomizing nozzle is turned on. When the atomizing nozzle is turned on, water in the water supply tank is transmitted to the atomizing nozzle through a hose and a delivery pipe. Finally, the water mist sprayed from the atomizing nozzle is used to wet and reduce dust in the air underground. By spraying water mist on the dust in the air, the diffusion of dust is suppressed.

[0018] 3. Compared with the existing ventilation and purification devices for underground excavation faces, the present invention can atomize and spray the strong dust generated on the excavation working face to suppress the diffusion of dust. Moreover, the atomizing dust reduction component can also be intelligently and adaptively adjusted according to the dust conditions of the excavation face to meet the spray dust reduction operations under different dust conditions, thereby making the atomizing dust reduction on the underground excavation face more flexible and realizing precise atomizing dust reduction operations.

[0019] 4. When the present invention uses the air duct to suck the excavation working face, due to the setting of the atomizing dust reduction component, the dust content in the air can be reduced, thereby locally improving the quality of the air at the underground excavation face. When the suction fan is turned on, a strong vortex-shaped suction force can be generated inside the air duct. At this time, the air that has been preliminarily dusted by the atomizing dust reduction component enters the air duct, and the electric slider is turned on to drive the movable plate to slide back and forth in the movable groove, so that the position of the suction fan in the air duct is moved and regulated. When the suction fan is closer to the front side of the air duct, the suction force of the air duct on the air is greater, and the suction intensity is greater. When the particulate matter in the air sucked into the air duct collides with the baffle, it will fall into the dust collecting hopper for collection, and the dust in the air will be discharged together with the extracted air. Compared with the existing device, the present invention can discharge the air containing a large amount of dust in the well during underground excavation, thereby improving the harsh environment underground and effectively reducing dust suppression.

[0020] 5. The present invention can approach the excavation face where dust is generated through the head-on collection component to assist the air duct in absorbing and discharging air. When the sensing system detects the dust dispersion point, it controls the positioning frame to slide on the track frame to make the collection pipe close to the dust source, and the middle component rotates in the middle of the positioning frame to adjust the dust suction range of the collection pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall side structure of the present invention; Figure 2 It is a schematic diagram of the overall side sectional structure of the present invention; Figure 3 It is a schematic diagram of the rear structure of the present invention; Figure 4 This is a schematic diagram of the structure of the head-on collection assembly of the present invention; Figure 5 This is a schematic structural diagram of the atomizing dust reduction assembly of the present invention; Figure 6 This is a schematic diagram of a partial side cross-section of the atomizing dust reduction assembly of the present invention; Figure 7 It is a schematic diagram of the local structure of the present invention; Figure 8 It is a schematic diagram of the partial cross-sectional structure of the rotary drum of the present invention.

[0022] The reference numerals in the figures are as follows: 1. Air duct; 101. Detection frame; 102. Sensing system; 103. Mounting frame; 104. Telescopic rod; 105. Rotating frame; 106. Support; 20. Hollow frame; 201. Ring frame; 202. Control frame; 203. Control plate; 21. Swivel; 211. Push plate; 22. Connecting plate; 221. Fixing piece; 222. Shaft; 223. Steering wheel; 224. Turning frame; 225. Atomizing nozzle; 226. Guide frame; 227. Rack; 228. Push plate Feeding rack; 23. Rotating drum; 231. Inner ring; 232. Limiting rod; 233. Control panel; 234. Internal parts; 24. Water supply tank; 241. Delivery pipe; 242. Hose; 25. Moving trough; 251. Moving plate; 252. Suction fan; 26. Dust hopper; 3. Baffle; 30. Card slot; 31. Profile rack; 32. Slide rod; 33. Card block; 41. Track rack; 42. Positioning rack; 43. Middle component; 44. Collection pipe; 45. Conducting pipe; 5. Discharge pipe. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] As attached Figures 1-8 As shown, a ventilation and purification device for an underground tunneling working face includes an air duct 1, a detection frame 101 is provided on the top of the air duct 1, a sensing system 102 is installed on the detection frame 101 and is connected to the outside, a dust suction unit is provided in the inner cavity of the air duct 1, an atomizing dust reduction component for reducing dust during underground tunneling is provided on the front side of the air duct 1, and a head-on collection component connected to the air duct 1 is arranged circumferentially on the outside of the air duct 1.

[0025] The sensing system 102 can intelligently detect the environmental conditions underground, thereby transmitting the data outward, and controlling the entire device after intelligent processing based on the monitored data. This is the prior art and therefore will not be described in detail. The dust collection unit is provided so that the wind duct 1 can draw a large amount of dust and harmful gases generated during the excavation of the underground excavation face into the wind duct 1 and then discharge them outside the well. In addition, with the cooperation of the head-on collection component, the head-on collection component is close to the excavation face. By rotating the head-on collection component, the range of underground dust collection can be controlled, thereby assisting the wind duct 1 in extracting the underground air. Compared with the existing ventilation and purification device for the excavation working face, the present invention provides a head-on collection component when the wind duct 1 sucks air from the excavation working face. On the one hand, it can assist the wind duct 1 in sucking air from the excavation working face. On the other hand, the head-on collection component is moved closer to the dusty area on the excavation face, thereby accurately sucking the excavation face and reducing the dust diffusion rate. At the same time, the head-on collection component rotates and can also make different changes to the range of air suction on the excavation face, thereby increasing the range of air suction on the excavation face and improving the ventilation and dust removal of the underground excavation face.

[0026] As attached Figure 5 、 Figure 6 As shown, the atomizing dust reduction assembly includes a hollow frame 20 located on the inner wall of the wind tube 1 and arranged in a circumferential direction, a circular frame 201 is installed between multiple hollow frames 20, and multiple circumferentially arranged control frames 202 are provided on the circular frame 201. A control plate 203 is slidably installed in the middle of the control frame 202. A rotating ring 21 is provided on the outside of the circular frame 201 and is rotatably connected to the wind tube 1 through an electric slider. Multiple pushing plates 211 are arranged on the rotating ring 21, and the multiple pushing plates 211 are rotatably connected to the multiple control plates 203 respectively.

[0027] The atomizing nozzles 225 arranged in an annular direction on the front side of the multiple connecting plates 22 are flipped along the axis of the circular frame 201 to move closer to or away from each other. When the multiple atomizing nozzles 225 are flipped toward respective locations away from each other, the atomizing spraying range of the multiple atomizing nozzles 225 is expanded, thereby intelligently and adaptively expanding according to the range of dust dispersion on the excavation face under the intelligent control of the sensing system 102.

[0028] As attached Figure 7As shown, a connecting plate 22 is fixedly installed on one side of the regulating plate 203, and a fixing part 221 is fixedly installed on the front side of the connecting plate 22. A shaft 222 is rotatably installed on the fixing part 221, and a steering wheel 223 located in the middle of the fixing part 221 is provided on the shaft 222. Flip frames 224 are fixedly installed at both ends of the shaft 222, and an atomizing nozzle 225 is installed between the two flip frames 224. A guide frame 226 is provided on the connecting plate 22, and a rack 227 engaged with the steering wheel 223 is slidably installed in the guide frame 226. A pushing frame 228 is provided at one end of the rack 227, and the middle part of the pushing frame 228 is hollow.

[0029] When the atomizing dust suppression component is performing dust suppression on the underground excavation working face, the atomizing nozzle 225 is turned on. When the atomizing nozzle 225 is turned on, the water in the water supply tank 24 is transmitted to the atomizing nozzle 225 through the hose 242 and the delivery pipe 241. Finally, the water mist sprayed by the atomizing nozzle 225 wets the dust in the air underground and suppresses the dispersion of dust by spraying water mist on the dust in the air. When the atomizing dust suppression component adjusts the spraying range, the electric slider is turned on to drive the rotary The ring 21 rotates, and when the ring 21 rotates, it drives the multiple control plates 203 to move up and down in the control frame 202. At this time, the connecting plate 22 moves synchronously. When the multiple connecting plates 22 move away from each other, the distance between the multiple fixing members 221 is further away. Then the electric slider opens to drive the rotating drum 23 to rotate in the inner direction of the wind tube 1. When the rotating drum 23 rotates, it drives the inner ring 231 to move forward and backward. When the inner ring 231 moves forward, it drives the control plate 233 to move synchronously, and the control plate 233 moves forward. When the gears 227 are moved forward, the rack 227 is pushed forward by the built-in part 234. When the gears 227 move forward, the rack 227 engages with the steering wheel 223, thereby driving the flip frame 224 to flip outward. When the multiple flip frames 224 flip outward, the multiple atomizing nozzles 225 flip away from each other, thereby being suitable for spraying dust reduction in an environment with large dust dispersion on the excavation face. On the contrary, when the multiple connecting plates 22 approach each other and the inner ring 231 moves backward, the multiple atomizing nozzles 225 flip close to each other, thereby The spraying range is concentrated, and concentrated atomization spraying is performed on the dust on the excavation face. Compared with the existing ventilation and purification device of the underground excavation face, the present invention can atomize and spray the strong dust generated on the excavation working face, suppress the diffusion of dust, and through the atomization dust reduction component, it can also be intelligently and adaptively adjusted according to the dust situation of the excavation face to meet the spray dust reduction operation under different dust conditions, thereby making the atomization dust reduction on the underground excavation face more flexible and realizing precise atomization dust reduction operation.

[0030] As attached Figure 2 、 Figure 8As shown, a rotating drum 23 is rotatably installed in the inner cavity of the air duct 1 through an electric slider, a thread is provided on the inner side of the rotating drum 23, and an internal ring 231 is rotatably installed on the inner wall of the rotating drum 23. A plurality of circumferentially arranged limiting rods 232 are fixedly installed on the inner wall of the air duct 1, and the limiting rods 232 pass through and slide in the internal ring 231. A plurality of control panels 233 are provided on the inner side of the internal ring 231, and an internal component 234 is provided on the side of the control panel 233 away from the internal ring 231, and the internal component 234 is located in the middle of the pushing frame 228 and slides.

[0031] The pushing frame 228 is hollow in the middle, and the guide frame 226 is fixedly connected to the connecting plate 22. When the connecting plate 22 moves up and down, the guide frame 226 is synchronously driven to rise and fall. At this time, the guide frame 226 moves outside the built-in component 234, and when the inner ring 231 moves back and forth on the inner wall of the rotating drum 23, the control board 233 drives the rack 227 to slide back and forth in the guide frame 226 through the built-in component 234, thereby realizing that the distance between the multiple atomizing nozzles 225 can be adjusted to each other, and the spraying angles between the multiple atomizing nozzles 225 can be continuously rotated, thereby achieving uniform atomization and dust reduction.

[0032] As attached Figure 2 、 Figure 3 As shown, a water supply box 24 is provided on the rear side of the air duct 1, and a plurality of circumferentially arranged delivery pipes 241 are provided on the water supply box 24. A hose 242 is fixedly installed at one end of the delivery pipe 241, and the end of the hose 242 away from the delivery pipe 241 is fixedly connected to the corresponding atomizing nozzle 225.

[0033] The clean water pre-injected into the water supply tank 24 can supply water to the atomizing nozzle 225 when in use, and a hose 242 is provided at one end of the delivery pipe 241. Therefore, when multiple atomizing nozzles 225 move and flip relative to each other, the hose 242 can always be connected to the atomizing nozzle 225, thereby ensuring that the atomizing nozzle 225 does not affect the water supply operation of the delivery pipe 241 and the hose 242 when atomizing it when moving.

[0034] As attached Figure 2 As shown, the dust collection unit includes a movable groove 25 opened on the wind tube 1, and a movable plate 251 is slidably installed in the movable groove 25 through an electric slider. A suction fan 252 is fixedly installed on the movable plate 251. When the suction fan 252 is turned on, a swirling suction force is generated in the wind tube 1, so that the wind tube 1 sucks in the dust generated on the excavation face. The suction fan 252 is located at the center between multiple conveying pipes 241, and a dust collecting hopper 26 is detachably installed under the wind tube 1.

[0035] When sucking the heading face through the air duct 1, due to the setting of the atomized dust suppression component, the dust content in the air can be reduced, thereby locally improving the air quality of the underground heading face. When the suction fan 252 is turned on, a strong swirling suction force can be generated inside the air duct 1. At this time, the air preliminarily dust-suppressed by the atomized dust suppression component enters the air duct 1, and the electric slider is turned on to drive the moving plate 251 to slide back and forth in the moving groove 25, so as to move and adjust the position of the suction fan 252 inside the air duct 1. When the suction fan 252 is closer to the front side of the air duct 1, the suction force of the air duct 1 on the air is greater at this time, and the suction intensity is greater. When the particulate matter in the air sucked into the air duct 1 hits the baffle 3, it will fall into the dust collection hopper 26 for collection, and the dust in the air will be discharged together with the extracted air. Compared with the existing device, the present invention can discharge the air containing a large amount of dust underground during underground tunneling, thereby improving the harsh underground environment and effectively reducing the inhibition of dust.

[0036] A baffle 3 with a circular hole in the middle is provided at the rear of the air duct 1. A filter plate is detachably installed inside the baffle 3. A discharge pipe 5 connected to the baffle 3 is provided on one side of the filter plate. The other end of the discharge pipe 5 is placed above the well. A U-shaped frame 31 fixedly connected to the air duct 1 is provided around the baffle 3. A card slot 30 is circumferentially opened around the baffle 3. A sliding rod 32 is slidably installed in the middle of the U-shaped frame 31, and a clamping block 33 is fixedly installed at the bottom of the sliding rod 32.

[0037] Through the setting of the filter plate, the air sucked into the air duct 1 can be preliminarily purified, avoiding the direct discharge of the air sucked into the air duct 1 to the outside. At the same time, through the setting of the baffle 3, the discharged air can be preliminarily contacted, so that the larger particulate matter in the air falls after being hit, so as to be uniformly collected by the dust collection hopper 26. The filter plate inside the baffle 3 can be replaced by replacing the baffle 3.

[0038] As attached Figure 4 As shown in the figure, the heading collection component includes a plurality of circumferentially arranged track frames 41. A positioning frame 42 is slidably installed in the middle of each track frame 41 through an electric slider. A middle component 43 is rotatably installed in the middle of the positioning frame 42. A collection pipe 44 is fixedly installed on the upper part of the middle component 43. The plurality of collection pipes 44 are convenient for increasing the dust suction efficiency when the air duct 1 sucks dust underground, and at the same time quickly adjusting the dust suction distance. A conduction pipe 45 connected to the air duct 1 is provided at the bottom of the middle component 43.

[0039] Through the heading collection component, it can be close to the heading face where dust is generated, so as to assist the air duct 1 in adsorbing and discharging air. When the sensing system 102 detects the dust dispersion point, it controls the positioning frame 42 to slide on the track frame 41, so that the collection pipe 44 is close to the dust generation place, and by rotating the middle component 43 in the middle of the positioning frame 42, the dust suction range of the collection pipe 44 can also be adjusted.

[0040] As attached Figure 1 As shown, mounting brackets 103 rotatably connected to the air duct 1 are provided on both sides of the air duct 1, a telescopic rod 104 is fixedly installed on the rear of the mounting bracket 103, a rotating bracket 105 is installed between the two telescopic rods 104, a support 106 is provided below the rotating bracket 105, and the support 106 and the rotating bracket 105 are rotatably connected via a motor.

[0041] By rotating the rotating frame 105 on the support 106, the wind tube 1 can be rotated quickly underground, so as to perform suction at different angles. By extending and retracting the telescopic rod 104, the air suction port of the wind tube 1 can be brought close to the excavation face.

[0042] Another object of the present invention is to provide a method for using a ventilation and purification device for an underground excavation working face, comprising the following steps: S1: Atomization dust suppression: The opening of the atomizing nozzle 225 suppresses the flying dust on the underground excavation face by atomizing, thereby reducing the dispersion tendency of the dust. The angle rotation of the turning frame 224 drives the atomizing nozzle 225 to continuously change the range of the atomizing dust reduction, thereby enhancing the dust reduction range. S2: Dust removal and ventilation: The suction fan 252 is turned on to form a vortex in the air duct 1 to discharge the air underground. The head-on collection unit is used to enhance the accelerated discharge of the underground air cylinder. The air is sucked into the mine through the existing suction device to complete the gas exchange underground.

[0043] When the present invention is in use, the sensing system 102 can intelligently detect the environmental conditions underground, thereby transmitting the data outward, and controlling the entire device after intelligent processing based on the monitored data. This is the prior art, so no further explanation will be given. Through the provision of the dust suction unit, the wind duct 1 can draw a large amount of dust and harmful gases during the excavation of the underground excavation face into the wind duct 1 and then discharge them outside the well. In addition, with the cooperation of the head-on collection component, the head-on collection component is close to the excavation face. Through the rotation of the head-on collection component, the range of underground dust collection can also be controlled, thereby assisting the wind duct 1 in extracting the underground air. Compared with the existing ventilation and purification device for the excavation working face, the present invention provides a head-on collection component when the wind duct 1 sucks air from the excavation working face. On the one hand, it can assist the wind duct 1 in sucking air from the excavation working face. On the other hand, the head-on collection component is used to approach the area with large dust on the excavation face. , so that the excavation face can be accurately sucked and the diffusion speed of dust can be reduced. At the same time, the head-on collection component rotates, and the range of air suction on the excavation face can be changed differently, thereby increasing the range of air suction on the excavation face, thereby improving the ventilation and dust removal of the underground excavation face. The pushing frame 228 is hollow in the middle, and the guide frame 226 is fixedly connected to the connecting plate 22. When the connecting plate 22 moves up and down, it synchronously drives the guide frame 226 to rise and fall. At this time, the guide frame 226 moves outside the inner part 234, and when the inner ring 231 moves back and forth on the inner wall of the rotating drum 23, the control board 233 drives the rack 227 to slide back and forth in the guide frame 226 through the inner part 234, thereby realizing that the spacing between the multiple atomizing nozzles 225 can be adjusted to each other, and the angles of the multiple atomizing nozzles 225 when spraying can be continuously rotated, thereby achieving uniform atomization and dust reduction.

[0044] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A ventilation and purification device for an underground excavation working face, comprising a wind tube (1), characterized in that: The top of the wind tube (1) is provided with a detection frame (101), the inner cavity of the wind tube (1) is provided with a dust suction unit, the front side of the wind tube (1) is provided with an atomizing dust reduction component for reducing dust during underground excavation, and the outside of the wind tube (1) is circumferentially arranged with a head-on collection component connected to the wind tube (1).

2. The ventilation and purification device for an underground excavation working face according to claim 1, characterized in that: The atomizing dust reduction assembly comprises a hollow frame (20) located on the inner wall of the wind tube (1) and arranged in a circular direction, a circular frame (201) being installed between the plurality of hollow frames (20), a plurality of regulating frames (202) arranged in a circular direction being provided on the circular frame (201), a regulating plate (203) being slidably installed in the middle of the regulating frame (202), a rotating ring (21) being rotatably connected to the wind tube (1) via an electric slider being provided on the outside of the circular frame (201), a plurality of pushing plates (211) being arranged on the rotating ring (21), and the plurality of pushing plates (211) being rotatably connected to the plurality of regulating plates (203) respectively.

3. The ventilation and purification device for underground excavation working face according to claim 2, characterized in that: A connecting plate (22) is fixedly installed on one side of the regulating plate (203), a fixing member (221) is fixedly installed on the front side of the connecting plate (22), a shaft (222) is rotatably installed on the fixing member (221), a steering wheel (223) located in the middle of the fixing member (221) is provided on the shaft (222), a turning frame (224) is fixedly installed on both ends of the shaft (222), an atomizing nozzle (225) is commonly installed between the two turning frames (224), a guide frame (226) is provided on the connecting plate (22), a rack (227) meshing with the steering wheel (223) is slidably installed in the guide frame (226), a pushing frame (228) is provided at one end of the rack (227), and the middle part of the pushing frame (228) is hollow.

4. The ventilation and purification device for underground excavation working face according to claim 3, characterized in that: The inner cavity of the wind tube (1) is rotatably mounted with a rotating drum (23) via an electric slider. The inner side of the rotating drum (23) is provided with a thread. The inner wall of the rotating drum (23) is rotatably mounted with an inner ring (231). A plurality of circumferentially arranged limiting rods (232) are fixedly mounted on the inner wall of the wind tube (1). The limiting rods (232) penetrate and slide within the inner ring (231). A plurality of control panels (233) are provided on the inner side of the inner ring (231). An internal component (234) is provided on a side of the control panel (233) away from the inner ring (231). The internal component (234) is located in the middle of the pushing frame (228) and slides.

5. The ventilation and purification device for underground excavation working face according to claim 4, characterized in that: A water supply box (24) is provided at the rear side of the air duct (1). A plurality of circumferentially arranged delivery pipes (241) are provided on the water supply box (24). A hose (242) is fixedly mounted on one end of the delivery pipe (241). An end of the hose (242) away from the delivery pipe (241) is fixedly connected to a corresponding atomizing nozzle (225).

6. The ventilation and purification device for underground excavation working face according to claim 5, characterized in that: The dust collection unit comprises a movable groove (25) provided on the wind tube (1), a movable plate (251) being slidably mounted in the movable groove (25) via an electric slider, a suction fan (252) being fixedly mounted on the movable plate (251), the suction fan (252) being turned on to generate a swirling suction force in the wind tube (1), so that the wind tube (1) can absorb dust generated on the excavation surface, the suction fan (252) being located at the center between the plurality of conveying pipes (241), and a dust collecting hopper (26) being detachably mounted below the wind tube (1).

7. A ventilation and purification device for an underground excavation working face according to claim 6, characterized in that: The rear portion of the wind tube (1) is provided with a baffle (3) with a circular hole in the middle portion, a filter plate is detachably mounted on the inner side of the baffle (3), a discharge pipe (5) connected to the baffle (3) is provided on one side of the filter plate, and the other end of the discharge pipe (5) is placed on the well, a shaped frame (31) fixedly connected to the wind tube (1) is provided around the baffle (3), a card slot (30) is circumferentially opened around the baffle (3), a slide rod (32) is slidably mounted in the middle portion of the shaped frame (31), and a card block (33) is fixedly mounted on the bottom of the slide rod (32).

8. The ventilation and purification device for underground excavation working face according to claim 7, characterized in that: The head-on collection assembly comprises a plurality of groups of circumferentially arranged track frames (41), a positioning frame (42) being slidably mounted in the middle of each group of track frames (41) via an electric slider, a middle component (43) being rotatably mounted in the middle of the positioning frame (42), a collection pipe (44) being fixedly mounted on the upper portion of the middle component (43), the plurality of collection pipes (44) being convenient for increasing the dust collection efficiency when the wind tube (1) is used to collect dust underground, and at the same time, quickly regulating the dust collection distance, and a conduction pipe (45) connected to the wind tube (1) being provided at the bottom of the middle component (43).

9. The ventilation and purification device for underground excavation working face according to claim 8, characterized in that: Mounting frames (103) rotatably connected to the wind tube (1) are provided on both sides of the wind tube (1); a telescopic rod (104) is fixedly installed at the rear of the mounting frame (103); a rotating frame (105) is installed between the two telescopic rods (104); a support (106) is provided below the rotating frame (105); and the support (106) and the rotating frame (105) are rotatably connected via a motor.

10. A method for using a ventilation and purification device for an underground tunneling working face, applied to the ventilation and purification device for an underground tunneling working face as claimed in claim 9, characterized in that: The following steps are involved: S1: Atomization dust suppression: The opening of the atomizing nozzle (225) suppresses the flying dust on the underground excavation face by atomizing, thereby reducing the dispersion tendency of the dust. The angle rotation of the turning frame (224) drives the atomizing nozzle (225) to continuously change the range of the atomizing dust reduction, thereby enhancing the dust reduction range. S2: Dust removal and ventilation: The suction fan (252) is turned on to form a vortex in the air cylinder (1) to discharge the air underground, and cooperates with the head-on collection unit to enhance the accelerated discharge of the underground air cylinder, and the air is sucked into the mine through the existing suction device to complete the gas exchange underground.

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