A ventilation and dust removal device for coal mine operations

Abstract

The present invention discloses a ventilation and dust removal device for coal mine operations, comprising an air inlet pipe and an air outlet pipe, wherein the air inlet of the air inlet pipe is provided with an air inlet interface pipe, and the air outlet of the air outlet pipe is provided with an air outlet interface pipe, the air inlet interface pipe is used to connect to the mine tunnel air inlet main pipe, and the air outlet interface pipe is used to connect to the mine tunnel air outlet main pipe, the air inlet pipe and the air outlet pipe are connected back to back to form an integral ventilation main pipe, the ventilation main pipe is composed of a plurality of ventilation branch pipes connected together, a top plate is provided at the upper end of the ventilation branch pipe, a fixing bolt is provided at the upper end of the top plate, a partition is provided vertically in the middle axial direction of the ventilation branch pipe, the partition separates the internal space of the ventilation branch pipe and forms an air inlet channel and an air outlet channel respectively with the wall of the ventilation branch pipe, the air inlet channels of the plurality of ventilation branch pipes are connected to form the air inlet pipe, and the air outlet channels of the plurality of ventilation branch pipes are connected to form the air outlet pipe. The present invention can effectively reduce the dust content inside the mine tunnel, improve the ventilation and dust removal effect inside the mine tunnel, and is easy to hang and flexible to use.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine equipment, and in particular to a ventilation and dust removal device used in coal mine operations. Background Art

[0002] During coal mining operations, people need to excavate in the mountains. However, due to the poor air permeability of the rocks, when the mine tunnel is excavated to a deeper area inside the mountain, the mine tunnel needs to be ventilated to avoid the problem of workers suffering from hypoxia during work. In addition, when people dig coal in the mine tunnel, a large amount of fine dust and coal dust will be generated. If these dust and coal dust are not discharged in time, they are easily inhaled into the body by the workers, which can easily cause the probability of workers suffering from pneumoconiosis to increase greatly. Therefore, ventilation and dust removal devices are needed. Currently, commonly used ventilation and dust removal devices include dust removal fans, etc., and dust removal fans need to be equipped with dust removal ducts, which have long connections and are difficult to hang. In addition, there is a problem of insufficient circulating air or air volume between the dust removal fan and the local air supply fan, resulting in poor ventilation and dust removal effects and low efficiency. Therefore, an efficient and convenient ventilation and dust removal device is needed. Summary of the Invention

[0003] The purpose of the present invention is to provide a ventilation and dust removal device for coal mine operations to solve the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the present invention proposes a ventilation and dust removal device for coal mine operations, comprising an air inlet duct and an air outlet duct, the air inlet of the air inlet duct is provided with an air inlet interface pipe, and the air outlet of the air outlet duct is provided with an air outlet interface pipe, the air inlet interface pipe is used to connect with the mine tunnel air inlet main pipe, and the air outlet interface pipe is used to connect with the mine tunnel air outlet main pipe, the air inlet duct and the air outlet duct are connected back to back as an integrated ventilation main pipe, the ventilation main pipe is composed of a plurality of ventilation branch pipes, the upper end of the ventilation branch pipe is provided with a top plate, the upper end of the top plate is provided with a fixing bolt, a partition is provided vertically in the middle axial direction of the ventilation branch pipe, the partition separates the internal space of the ventilation branch pipe and forms an air inlet channel and an air outlet channel with the ventilation branch pipe wall respectively, the air inlet channels of the plurality of ventilation branch pipes are connected to form the air inlet duct, the air outlet channels of the plurality of ventilation branch pipes are connected to form the air outlet duct, the air inlet channel A channel connecting sub-port and a channel connecting female port are respectively provided in front and behind the air outlet channel, the channel connecting sub-port is a rectangular frame protruding forward, the front end of the rectangular frame is blocked, and a ventilation through-hole is provided on the side panel of the rectangular frame, and the channel connecting female port is a rectangular hole matching the rectangular frame. When multiple ventilation branch pipes are connected, the channel connecting sub-port of one ventilation branch pipe is inserted into the channel connecting female port of another ventilation branch pipe, and the front and rear channel air paths are connected through the ventilation through-holes provided on the side panels of the rectangular frame; ventilation ports are respectively provided on the side walls of the air inlet channel and the air outlet channel on one end side of the ventilation branch pipe, a circular tube is provided at the ventilation port, a turbofan is provided in the circular tube, two turbofans are horizontally symmetrically arranged and connected to a rotating shaft, a gear set is respectively connected to the rotating shafts of the two turbofans, and a motor drives the two turbofans to rotate in opposite directions through the gear set.

[0005] Furthermore, two partitions are provided in parallel and spaced apart, and a cavity is formed between the two partitions. The gear set and the motor are fixedly arranged in the cavity. A power control box is also provided in the cavity, and the power supply of the power control box is connected to the motor.

[0006] Furthermore, the gear set is a 90-degree steering gear set, which includes two horizontally oppositely arranged first bevel gears, a vertically arranged second bevel gear is provided between the two first bevel gears, the two first bevel gears are respectively meshed with the second bevel gears, and the horizontal rotation of the second bevel gear drives the two first bevel gears to rotate vertically in opposite directions. The rotating shafts of the two turbofans are respectively connected to the two first bevel gears, and the second bevel gear is connected to the motor.

[0007] Furthermore, a baffle is provided at the channel connection female port, and the baffle is snap-connected to the ventilation branch pipe or connected via return springs provided on both sides of the baffle.

[0008] Furthermore, the ventilation through holes are provided on the upper and lower side plates of the rectangular frame, and the plurality of ventilation through holes are evenly distributed.

[0009] Furthermore, there are multiple fixing bolts, which are symmetrically distributed linearly and evenly spaced on both sides. The ventilation branch pipe is formed by the upper cover and the lower cover being buckled and fixed together. The top of the upper cover is provided with a bolt hole that is compatible with the fixing bolt.

[0010] Furthermore, a filter is provided at the air inlet end of the air inlet interface pipe.

[0011] Furthermore, the ventilation opening is arranged at one end side of the connecting sub-opening of the ventilation branch channel.

[0012] Furthermore, a plurality of filters are provided along the air inlet channel, and the filters are arranged at intervals and evenly distributed.

[0013] Furthermore, the length of the ventilation branch pipe is 3m.

[0014] The beneficial effects of the present invention are as follows: the present invention blows the air carrying dust and coal dust in the mine tunnel out of the mine tunnel through the air outlet pipe, and allows fresh air from the outside of the mine tunnel to enter the inside of the mine tunnel through the air inlet pipe, thereby achieving the effect of dust removal inside the mine tunnel, which can effectively reduce the dust content inside the mine tunnel and greatly reduce the risk of workers suffering from pneumoconiosis. The filter screen arranged on the side of the air inlet pipe can further intercept external dust particles to prevent them from being carried into the mine tunnel by the air, thereby greatly improving the ventilation and dust removal effect inside the mine tunnel. The total length of the ventilation pipe can be adjusted according to actual conditions, and it is convenient to hang and has good flexibility.

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the ventilation and dust removal device;

[0017] Figure 2 This is a schematic diagram of the structure of the ventilation pipe;

[0018] Figure 3 It is a structural diagram of the gear set.

[0019] In the figure, 1. air inlet interface pipe; 2. air outlet interface pipe; 3. ventilation branch pipe; 301. partition; 302. air inlet channel; 303. air outlet channel; 304. rectangular frame; 305. ventilation through hole; 306. baffle; 307. circular tube; 308. turbofan; 309. rotating shaft; 310. motor; 311. power control box; 312. bolt hole; 313. first bevel gear; 314. second bevel gear; 315. return spring; 4. top plate; 5. fixing bolt. DETAILED DESCRIPTION

[0020] The present invention discloses a ventilation and dust removal device for coal mine operation, such as Figures 1 to 3 As shown, it includes an air inlet pipe and an air outlet pipe, the air inlet of the air inlet pipe is provided with an air inlet interface pipe 1, and the air outlet of the air outlet pipe is provided with an air outlet interface pipe 2. The air inlet interface pipe 1 is used to connect with the mine tunnel air inlet main pipe to receive fresh air outside the mine tunnel, and the air outlet interface pipe 2 is used to connect with the mine tunnel air outlet main pipe to discharge the dust-containing gas in the mine tunnel. The air inlet pipe and the air outlet pipe are connected back to back as an integrated ventilation main pipe. The ventilation main pipe is composed of multiple ventilation branch pipes 3. The upper end of the ventilation branch pipe 3 is provided with a top plate 4, and the upper end of the top plate is provided with a fixing bolt 5. The fixing bolt 5 is used to fix the ventilation branch pipe 1 to the mine tunnel top plate. A partition 301 is vertically provided in the middle axial direction of the ventilation branch pipe 1. The partition 301 separates the internal space of the ventilation branch pipe 3 and forms an air inlet channel 302 and an air outlet channel 303 with the ventilation branch pipe wall respectively. The air inlet channels 302 of the ventilation branch pipe 3 are connected to form an air inlet duct, and the air outlet channels 303 of the multi-section ventilation branch pipe 3 are connected to form an air outlet duct. The air inlet channel 302 and the air outlet channel 303 are respectively provided with channel connection sub-ports and channel connection mother ports in front and behind. The channel connection sub-port is a rectangular frame 304 protruding forward, the front end of the rectangular frame 304 is blocked, and a ventilation through-hole 305 is provided on the side panel of the rectangular frame. The channel connection mother port is a rectangular hole that matches the rectangular frame 304. When the multi-section ventilation branch pipe 3 is connected, the channel connection sub-port of one ventilation branch pipe is inserted into the channel connection mother port of another ventilation branch pipe, and the front and rear channel air paths are connected through the ventilation through-holes 305 provided on the side panels of the rectangular frame; the ventilation through-holes 305 are provided on the upper and lower side panels of the rectangular frame, and the multiple ventilation through-holes 305 are evenly distributed.

[0021] Ventilation openings are provided on the sidewalls of the air inlet channel 302 and the air outlet channel 303 at one end of the ventilation branch pipe. The vents are located near one end of the channel connection port of the ventilation branch pipe 3. A circular tube 307 is provided at the vent opening, and a turbofan 308 is installed within the circular tube 307. Two turbofans 308 are arranged horizontally and symmetrically and connected to a rotating shaft 309. A gear set is connected to each of the rotating shafts 309 of the two turbofans 308. A motor 310, through the gear set, drives the two turbofans 308 in opposite directions. Bearing blocks are mounted on the exterior of the rotating shaft 309, relative to the inner end of the circular tube 307. The upper and lower ends of the bearing blocks are fixedly connected to the upper and lower inner walls of the circular tube. The rotation of the turbofans 308 in the air inlet channel draws fresh air from outside the mine tunnel through the air inlet interface pipe 1 and discharges it through the air inlet channel vents into the mine tunnel. The rotation of the turbofans in the air outlet channel draws dust-laden air from the mine tunnel into the air outlet channel and discharges it through the air outlet interface pipe 2.

[0022] Among them, two partitions 301 are arranged in parallel and spaced apart, and the interval between the two partitions 301 forms a cavity, in which a gear set and a motor 310 are fixedly arranged. A power control box 311 is also arranged in the cavity, and the power supply of the power control box is connected to the motor 310.

[0023] Specifically, the gear set used is a 90-degree steering gear set, such as Figure 3 As shown, the gear set includes two horizontally oppositely arranged first bevel gears 313, and a vertically arranged second bevel gear 314 is provided between the two first bevel gears 313. The two first bevel gears 313 are respectively meshed with the second bevel gears 314. The horizontal rotation of the second bevel gear 314 drives the two first bevel gears 313 to rotate vertically in opposite directions. The rotating shafts 309 of the two turbofans are respectively connected to the two first bevel gears 313, and the second bevel gear 314 is connected to the motor 310. In this way, the two turbofans can be driven to rotate in opposite directions through the gear set.

[0024] Specifically, the channel connection female port is provided with a baffle 306, which is engaged with the ventilation branch pipe 3 or connected via return springs 315 disposed on either side of the baffle 306. When the baffle 306 is engaged with the ventilation branch pipe 3, the baffle 306 can be withdrawn when the two ventilation branch pipes 3 are connected. When the baffle 306 is engaged with the ventilation branch pipe 3 via return springs 315 disposed on either side of the baffle 306, the channel connection sub-port pushes the baffle 306 open when the two ventilation branch pipes 3 are connected. When the baffle 306 is not connected, the return springs 315 return the baffle 306 to its original position, sealing the channel connection sub-port.

[0025] Specifically, there are multiple fixing bolts 5, which are symmetrically distributed linearly and evenly spaced on both sides. The ventilation branch pipe 3 is formed by the upper cover and the lower cover being interlocked and fixed. The top of the upper cover is provided with a bolt hole 312 that is compatible with the fixing bolt. The fixing bolt 5 cooperates with the bolt hole 312 to fix the ventilation branch pipe on the mine roof. The even distribution of the fixing bolts makes the force uniform, thereby increasing the firmness and stability of the ventilation branch pipe.

[0026] Specifically, a filter is provided at the air inlet end of the air inlet interface pipe 1, and multiple filters are provided along the air inlet channel 302. The filters are arranged at intervals and evenly distributed. By setting the filters, external dust particles can be further intercepted to prevent them from being carried into the mine tunnel by the air, thereby greatly improving the ventilation and dust removal effect inside the mine tunnel.

[0027] The ventilation main pipe is composed of multiple ventilation branch pipes 3. Generally, the length of the ventilation branch pipe 3 is 3m. The number of ventilation branch pipes required can be determined according to actual conditions. It can also be extended at any time during use, which is convenient for plugging and use, and effectively improves the flexibility of the device.

[0028] During use, the staff can fix the front-end ventilation branch pipe to the opening end of the mine tunnel using the fixing bolt 5. When multiple ventilation branch pipes 3 are connected, the channel connecting sub-port of the rear ventilation branch pipe is inserted into the channel connecting female port of the front ventilation branch pipe to connect multiple ventilation branch pipes. After the staff has fixed the device, the ventilation and dust removal device starts to work. At this time, the motor 310 drives the second bevel gear 314 to rotate, thereby causing the two first bevel gears 313 to rotate in opposite directions. Driven by the two first bevel gears 313, the turbo fans 308 on both sides will rotate in opposite directions. Since the two turbo fans 308 are arranged in a symmetrical structure, the rotation of the two will form a low-pressure area on one side of themselves. In this way, the rotation of the turbo fans on the air outlet channel side causes the dust-laden gas in the mine tunnel to be sucked into the air outlet channel 303 and discharged from the air outlet interface pipe 2. At the same time, the rotation of the turbo fans on the air inlet channel side causes the fresh air outside the mine tunnel to be sucked in from the air inlet interface pipe 1 and then discharged into the mine tunnel through the ventilation port of the air inlet channel 302, thereby achieving the effect of dust removal inside the mine tunnel, effectively reducing the dust content inside the mine tunnel, greatly reducing the risk of workers suffering from pneumoconiosis, and at the same time increasing the air flow inside the mine tunnel to achieve the purpose of ventilation, thereby avoiding hypoxia of workers deep in the mine tunnel due to high-intensity labor. In addition, a filter is provided at the air inlet end of the air inlet interface pipe 1, and multiple filters are provided along the air inlet channel 302, which can effectively intercept external dust and prevent it from being carried into the mine tunnel by the air, thereby ensuring the ventilation and dust removal effect inside the mine tunnel to the greatest extent.

Claims

1. A ventilation and dust removal device for coal mine operations, comprising an air inlet pipe and an air outlet pipe, wherein the air inlet of the air inlet pipe is provided with an air inlet interface pipe, and the air outlet of the air outlet pipe is provided with an air outlet interface pipe, the air inlet interface pipe is used to connect to the mine tunnel air inlet main pipe, and the air outlet interface pipe is used to connect to the mine tunnel air outlet main pipe, characterized in that: The air inlet duct and the air outlet duct are connected back to back as an integral ventilation main duct, and the ventilation main duct is composed of multiple sections of ventilation branch pipes. The upper end of the ventilation branch pipe is provided with a top plate, and the upper end of the top plate is provided with a fixing bolt. A partition is provided vertically in the middle axial direction of the ventilation branch pipe. The partition separates the internal space of the ventilation branch pipe and forms an air inlet channel and an air outlet channel with the wall of the ventilation branch pipe respectively. The air inlet channels of multiple sections of ventilation branch pipes are connected to form the air inlet duct, and the air outlet channels of multiple sections of ventilation branch pipes are connected to form the air outlet duct. The air inlet channel and the air outlet channel are respectively provided with a channel connecting sub-port and a channel connecting female port. The channel connecting sub-port is a rectangular frame protruding forward, the front end of the rectangular frame is blocked, and a ventilation through-hole is provided on the side plate of the rectangular frame. The channel connecting female port is a rectangular hole that matches the rectangular frame. When multiple sections of ventilation branch pipes are connected, the channel connecting sub-port of one ventilation branch pipe is inserted into the other The channel connection mother port of the ventilation branch pipe, and the front and rear channel air paths are connected through the ventilation through holes arranged on the side panels of the rectangular frame; ventilation openings are respectively provided on the side walls of the air inlet channel and the air outlet channel on one end side of the ventilation branch pipe, and a circular tube is provided at the ventilation opening, and a turbofan is provided in the circular tube, and two turbofans are horizontally symmetrically arranged and connected with a rotating shaft, a gear set is respectively connected to the rotating shafts of the two turbofans, and a motor drives the two turbofans to rotate in opposite directions through the gear set; two partitions are provided in parallel and spaced apart, and the interval between the two partitions forms a cavity, and the gear set and the motor are fixedly arranged in the cavity, and a power control box is also provided in the cavity, and the power supply of the power control box is connected to the motor; a baffle is provided at the channel connection mother port, and the baffle is snap-connected to the ventilation branch pipe or connected by a reset spring arranged on both sides of the baffle.

2. A ventilation and dust removal device for coal mine operations according to claim 1, characterized in that: The gear set is a 90-degree steering gear set, which includes two horizontally oppositely arranged first bevel gears, a vertically arranged second bevel gear is provided between the two first bevel gears, the two first bevel gears are respectively meshed and connected with the second bevel gears, and the horizontal rotation of the second bevel gear drives the two first bevel gears to rotate vertically in opposite directions. The rotating shafts of the two turbofans are respectively connected to the two first bevel gears, and the second bevel gear is connected to the motor.

3. A ventilation and dust removal device for coal mine operations according to claim 1, characterized in that: The ventilation through holes are arranged on the upper and lower side plates of the rectangular frame, and a plurality of ventilation through holes are evenly distributed.

4. A ventilation and dust removal device for coal mine operations according to claim 1, characterized in that: There are multiple fixing bolts, which are symmetrically distributed linearly and evenly spaced on both sides. The ventilation branch pipe is formed by the upper cover and the lower cover being buckled and fixed together. The top of the upper cover is provided with a bolt hole adapted to the fixing bolt.

5. The ventilation and dust removal device for coal mine operation according to claim 1, characterized in that: The air inlet end of the air inlet interface pipe is provided with a filter.

6. A ventilation and dust removal device for coal mine operation according to claim 1, characterized in that: The vent is arranged at one end side of the connecting sub-port of the ventilation branch channel.

7. A ventilation and dust removal device for coal mine operation according to claim 1, characterized in that: A plurality of filters are arranged along the air inlet channel, and the filters are arranged at intervals and evenly distributed.

8. The ventilation and dust removal device for coal mine operation according to claim 1, characterized in that: The length of the ventilation branch pipe is 3m.

Images