A dustproof ventilation device for underground coal mine

Abstract

The present application relates to the technical field of coal mining, and particularly relates to a dustproof ventilation device for underground coal mine, comprising a filter box, a blowing assembly and a filter, wherein the blowing assembly and the filter are both installed in the filter box, the filter box is further provided with a spraying port, the blowing direction of the blowing assembly is arranged corresponding to the spraying area of the spraying port, and is further arranged corresponding to the filter surface of the filter. The beneficial effect is that the spraying port and the filter are arranged in sequence along the airflow direction of the blowing assembly, and the blowing direction of the blowing assembly is simultaneously aligned with the spraying area and the filter surface, forming a treatment process of 'water mist capturing-filtering and purifying'. The dust-containing airflow is firstly fully contacted and collided with fine water mist in the spraying area, realizing the preliminary wetting and settlement of large-particle dust and part of inhalable particulate matters; then, the un-captured fine dust and residual harmful gas are guided to the filter surface along the airflow, and are further removed through physical interception or adsorption.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, and in particular to a dust control and ventilation device for underground coal mines. Background Technology

[0002] Coal mining operations typically take place in confined, humid, and dusty underground environments. During processes such as coal mining, tunneling, transportation, and support, large amounts of dust, including suspended coal dust and rock dust, are continuously generated, along with harmful gases such as methane, carbon monoxide, and hydrogen sulfide. These pollutants not only seriously threaten respiratory health but also pose an explosion risk under certain concentration conditions, making them a major contributing factor to significant coal mine safety accidents. Therefore, effective dust control and ventilation systems are necessary at underground coal mine working faces to capture, filter, and purify dust-laden airflow.

[0003] Currently, commonly used dust control and ventilation devices in coal mines mainly include wet dust collectors, water curtains, and dry filter fans. However, in practical applications, existing devices generally suffer from problems such as limited functionality and insufficient purification capacity. Specifically, most existing equipment only uses a single-stage water mist spray structure, resulting in short contact time between the water mist and dust and insufficient wetting. This leads to a large amount of fine dust (especially inhalable particles smaller than PM10) not being captured and being directly discharged into the roadway, resulting in limited dust removal efficiency. At the same time, simple water mist spraying is insufficient to effectively remove harmful gases (such as hydrogen sulfide and methane) adsorbed on the surface of dust or existing in gaseous form.

[0004] Therefore, there is an urgent need to develop a dust control and ventilation device for underground coal mines that can more effectively remove dust and provide ventilation. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a dust prevention and ventilation device for underground coal mines, which solves the technical problems of the existing dust prevention and ventilation devices having single function and insufficient purification capacity.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] This invention provides a dust control and ventilation device for underground coal mines, including a filter box, a blower assembly, and a filter. The blower assembly and the filter are both installed inside the filter box, which is also equipped with a spray nozzle located between the blower assembly and the filter. The blowing direction of the blower assembly corresponds to the spray area of ​​the spray nozzle and also corresponds to the filter surface of the filter.

[0010] Optionally, the filter includes a water filter element and an air filter element; both the water filter element and the air filter element are detachably connected inside the filter box, and the water filter element and the air filter element are arranged sequentially along the air blowing direction of the air blowing assembly.

[0011] Optionally, the water filter includes a filter frame, a collection box, and a water absorption curtain; the filter frame is a hollow rectangle, and the filter frame and the filter box are slidably connected in the vertical direction; the water absorption curtain is fixed to the inner wall of the filter frame and covers the internal space of the filter frame; the collection box is fixedly connected to the bottom of the filter frame, and the upper surface of the collection box is provided with several recessed holes, and the front side of the collection box is provided with a drain hole; a drain pipe is provided through the front side of the filter box, one end of the drain pipe is provided with a plug, and the other end of the drain pipe is connected to the drain hole.

[0012] Optionally, the air filter includes a filter frame, two filter screens, and an activated carbon layer; the filter frame is a hollow rectangle, and the filter frame is slidably connected to the filter box in the vertical direction; the two filter screens are fixed to the left and right sides of the filter frame respectively, and the activated carbon layer is sandwiched between the two filter screens.

[0013] Optionally, each filter frame and filter box is fixed with several handles and two locking strips on its top. The locking strips extend horizontally and protrude from the front and rear sides of the filter frame and filter box respectively, so that the locking strips can abut against the top wall of the filter box.

[0014] Optionally, the dustproof ventilation device also includes an upper connecting plate, a lower connecting plate, multiple flexible damping arrays, two baffles, and a support assembly; the upper connecting plate is fixed below the filter box, the lower connecting plate is fixed above the support assembly, the upper connecting plate and the lower connecting plate are slidably connected in the vertical direction, and the flexible damping arrays are sandwiched between the upper connecting plate and the lower connecting plate; the two baffles are respectively fixedly connected to the front and rear sides of the lower connecting plate, and the two baffles and the lower connecting plate cooperate to enclose the multiple flexible damping arrays.

[0015] Optionally, the support assembly includes a load-bearing plate and four support columns, the tops of which are fixed to the four corners of the load-bearing plate. Each support column includes a fixed column, a cylinder, a push plate, a telescopic rod, a connecting seat, and a movable wheel. The top of the fixed column is fixedly connected to the load-bearing plate, the cylinder is fixed inside the fixed column, and the output end of the cylinder is fixedly connected to the push plate. The push plate is fixedly connected to one end of the telescopic rod, the other end of the telescopic rod is fixedly connected to the connecting seat, and the movable wheel is rotatably connected to the connecting seat, so that the cylinder can drive the movable wheel to extend out of the bottom of the fixed column to contact the ground or retract into the fixed column.

[0016] Optionally, the blower assembly includes a mounting frame, a drive motor, and fan blades; the mounting frame is fixedly connected to the inner wall of the filter box, the drive motor is fixedly connected to the mounting frame, and the drive motor is driven by the fan blades.

[0017] Optionally, the dustproof ventilation device also includes a water tank and a water delivery assembly for delivering water from the water tank to the spray nozzle; the water delivery assembly includes a water pipe, a water pump and a spray head; the water pump is connected to one end of the water tank and one end of the water pipe, the other end of the water pipe is connected to the spray head, the spray nozzle is opened on the side of the spray head facing the inside of the filter box, and the spray head corresponds to the fan blade.

[0018] Optionally, the dustproof ventilation device also includes a control panel with multiple control buttons on its surface. These control buttons are electrically connected to the water pump, drive motor, and cylinder to control the operation of the water pump, drive motor, and cylinder.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this invention are as follows: This invention provides a dust control and ventilation device for underground coal mines, comprising a filter box, a blowing assembly, and a filter. Both the blowing assembly and the filter are installed within the filter box, which also contains a spray nozzle located between the blowing assembly and the filter. The blowing direction of the blowing assembly corresponds to the spray area of ​​the spray nozzle and also to the filter surface of the filter. Compared to existing technologies, by arranging the spray nozzle and the filter sequentially along the airflow direction of the blowing assembly, and simultaneously aligning the blowing direction of the blowing assembly with both the spray area and the filter surface, a "water mist capture—filtration and purification" process is formed. The dust-laden airflow first comes into full contact and collides with the fine water mist in the spray area, achieving initial wetting and settling of large-diameter dust particles and some inhalable particulate matter. Subsequently, uncaptured fine dust and residual harmful gases are guided by the airflow to the filter surface, where they are further removed through physical interception or adsorption. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the dust prevention and ventilation device for underground coal mines according to Embodiment 1 of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of a dust control and ventilation device used in underground coal mines, shown at one angle;

[0023] Figure 3 for Figure 1 The image shows a vertically sectional view of the filter box in a dust control ventilation device used in underground coal mines.

[0024] Figure 4 for Figure 1 The diagram shows a structural schematic of a dust control and ventilation device used in underground coal mines from one angle. The filter box is transparent to clearly show the connection between the filter box and the load-bearing plate.

[0025] Figure 5 for Figure 1A schematic diagram of the structure of a filter used in a dust control and ventilation system for underground coal mines is shown.

[0026] Figure 6 for Figure 1 The diagram shows a structural schematic of a support column for a dust control and ventilation system used in underground coal mines.

[0027] Explanation of reference numerals in the attached figures

[0028] 1: Filter box; 2: Water tank; 3: Water delivery assembly; 31: Water delivery pipe; 32: Water pump; 33: Spray head;

[0029] 4: Blower assembly; 41: Mounting bracket; 42: Drive motor; 43: Fan blades;

[0030] 5: Filter; 51: Water filter element; 511: Water filter frame; 512: First sliding bar; 513: Collection box; 514: Water suction curtain; 515: Drain hole; 516: Drain pipe; 517: Plug cap; 52: Air filter element; 521: Filter frame; 522: Filter screen; 523: Second sliding bar; 524: Activated carbon layer; 53: Handle; 54: Locking strip;

[0031] 6: Connecting upper plate; 7: Connecting lower plate; 8: Flexible damping array; 9: Baffle; 10: Load-bearing plate; 11: Support column; 111: Fixed column; 112: Cylinder; 113: Push plate; 114: Telescopic rod; 115: Connecting seat; 116: Moving wheel; 12: Control panel. Detailed Implementation

[0032] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. In this document, directional terms such as "upper," "lower," "left," "right," "front," and "rear" are used interchangeably. Figure 1 The orientation is used as a reference. "Up" refers to the direction closer to the roof of the coal mine, "down" refers to the direction closer to the floor of the coal mine, "front" refers to the direction closer to the control panel 12, "back" refers to the direction away from the control panel 12, "left" refers to the direction closer to the filter 5, and "right" refers to the direction away from the filter 5.

[0033] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0034] Example 1:

[0035] Reference Figures 1 to 6 This embodiment proposes a dust control ventilation device for underground coal mines, addressing the technical problems of existing dust control ventilation devices having limited functionality and insufficient purification capacity. Specifically, the dust control ventilation device for underground coal mines in this embodiment includes a filter box 1, a blower assembly 4, and a filter 5, as detailed below.

[0036] In this embodiment, the dustproof ventilation device also includes a water tank 2 and a water delivery assembly 3. The water tank 2 is rectangular in shape and is fixed to the top of the filter box 1 by welding, screwing, or snap-fitting. The water tank 2 is used to store water for dust removal and provides a water source for subsequent spraying. The water delivery assembly 3 is connected to both the water tank 2 and the filter box 1, allowing water in the water tank 2 to be delivered to the inside of the filter box 1. Furthermore, the water delivery assembly 3 can introduce water from the water tank 2 into the filter box 1 and atomize it.

[0037] The blowing assembly 4 is fixed inside the filter box 1, with the spray nozzle located at the end of the blowing assembly. Water from the water tank 2 is sprayed out as water mist through the spray nozzle after passing through the water supply assembly 3. The blowing assembly 4 works in conjunction with the water supply assembly 3, and the blowing direction of the blowing assembly 4 is set to correspond to the spray area of ​​the spray nozzle to form a directional water mist. The airflow generated by the blowing assembly 4 and the water mist sprayed from the outlet work together to make the water mist move in the blowing direction of the blowing assembly 4, thereby increasing the probability of collision between the water mist and dust and improving the capture efficiency of fine dust. At the same time, the airflow generated by the blowing assembly 4 can also blow harmful gases in the coal mine in the direction of airflow, preventing the accumulation of harmful gases and harming human health.

[0038] The filter 5 is detachably connected to the filter box 1. The blower assembly 4, spray nozzle, and filter 5 are distributed sequentially in the left-right direction to facilitate the combination of directional water mist and underground coal dust into the filter 5. Driven by the blower assembly 4, the directional water mist carries the captured dust and harmful gases into the filter 5 in an orderly manner. The filter 5 intercepts and adsorbs the dust-laden water mist, achieving deep purification of dust and gases. The detachable connection facilitates the replacement and maintenance of the filter 5, reducing operating costs.

[0039] Furthermore, ventilation holes are provided on the left and right side walls of the blower assembly 4, which are located in the axial direction of the airflow and are corresponding to the filter box 1, so that the airflow can enter and exit the dustproof ventilation device.

[0040] In summary, by arranging the spray nozzle and filter 5 sequentially along the airflow direction of the blowing assembly 4, and simultaneously aligning the blowing direction of the blowing assembly 4 with both the spray area and the filter surface of the filter 5, a "water mist capture-filtration purification" process is formed. The dust-laden airflow first comes into full contact and collides with the fine water mist in the spray area, achieving initial wetting and settling of large-diameter dust particles and some inhalable particulate matter; subsequently, the uncaptured fine dust and residual harmful gases are guided by the airflow to the filter surface of the filter 5, where they are further removed through physical interception or adsorption.

[0041] Furthermore, the filter 5 includes a water filter element 51 and an air filter element 52. The water filter element 51 is used to capture moisture in the directional water mist, as well as dust and some harmful gases attached to the water mist, trapping the water mist to form wastewater while allowing airflow to pass through. The air filter element 52 is used to further adsorb residual fine dust and harmful gas components in the airflow, achieving deep purification. Both the water filter element 51 and the air filter element 52 are detachably connected inside the filter box 1. This detachable connection allows the water filter element 51 and the air filter element 52 to be removed independently for cleaning or replacement of consumables (such as the water suction curtain 514 and activated carbon mentioned later), without disassembling the entire filter box 1, reducing maintenance difficulty and cost. The water filter element 51 and the air filter element 52 are arranged sequentially in the left-right direction, allowing the directional water mist to pass through the water filter element 51 and the air filter element 52 in sequence. The system ensures that the dust-laden water mist is first wet-intercepted by the water filter element 51 to remove most of the moisture and particulate matter, and then dry-adsorbed by the air filter element 52. This prevents the air filter element 52 from becoming saturated and failing due to direct contact with a large amount of water mist. At the same time, the synergistic effect of the two-stage filtration significantly improves the overall removal efficiency of dust and harmful gases.

[0042] Furthermore, the water filter element 51 includes a water filter frame 511, a collection box 513, and a water absorption curtain 514. The water filter element 51 also includes multiple first sliding strips 512 extending vertically, and multiple vertically extending grooves are provided on the inner wall of the filter box 1, providing a vertical guide track for the water filter frame 511. The water filter frame 511 is a hollow rectangle. The first sliding strips 512 are fixed to the outer side of the water filter frame 511 corresponding to the grooves by welding, screwing, or snap-fitting. The water filter frame 511 is slidably connected to the grooves vertically via the first sliding strips 512, allowing the water filter frame 511 to be pulled out and inserted from above the filter box 1. This facilitates the replacement of the water absorption curtain 514 and the cleaning of the collection box 513 without disassembling the outer shell of the filter box 1, making maintenance convenient and quick.

[0043] The water-absorbing curtain 514 is fixed to the inner wall of the filter frame 511 by means of adhesive, snap-fit, or screw connection to cover the internal space of the filter frame 511. The water-absorbing curtain 514 is used to intercept moisture, dust, and harmful gases attached to the directional water mist, causing the water mist to condense on the surface of the water-absorbing curtain 514 and flow downwards, while allowing airflow to pass through, thus achieving air-water separation and preliminary purification. Furthermore, the water-absorbing curtain 514 is a porous, hydrophilic filter medium that can both absorb water and allow air to pass through.

[0044] The collection box 513 is fixedly connected to the bottom of the filter frame 511 by welding, screwing, or snap-fitting. The upper surface of the collection box 513 is provided with several recessed holes, which are downward-facing openings. This allows the water condensed on the surface of the water curtain 514 to flow into the recessed holes, while the dust in the coal mine is blocked onto the water curtain 514. The water flowing down from the water curtain 514 enters the collection box 513 through the recessed holes for centralized storage, preventing sewage from accumulating or overflowing at the bottom of the filter box 1 and reducing secondary pollution. A drain hole 515 is provided on the front side of the collection box 513, and a drain pipe 516 is provided on the front side of the filter box 1. A plug 517 is provided at one end of the drain pipe 516. The plug 517 is detachably connected to one end of the drain pipe 516, and the other end of the drain pipe 516 is connected to the drain hole 515. After the plug 517 is opened, the sewage in the collection box 513 is discharged to the outside of the filter box 1 through the drain hole 515 and the drain pipe 516 for centralized treatment. After the plug 517 is closed, the filtration operation can continue, realizing the controlled discharge of sewage and improving the continuous working capacity of the equipment.

[0045] Furthermore, the filter element 52 includes a filter frame 521, two filter screens 522, and an activated carbon layer 524. The filter element 52 also includes a second slide bar 523, which extends vertically. The filter frame 521 is a hollow rectangle, providing a support frame for the filter screens 522 and the activated carbon layer 524. The second slide bar 523 is fixed to the outer side of the filter frame 521 corresponding to the slide groove by means of adhesive, snap-fit, or screw connection. The filter frame 521 is slidably connected to the slide groove vertically via the second slide bar 523, allowing the filter frame 521 to be pulled out or inserted into the filter box 1. This facilitates the replacement of the activated carbon layer 524 and the cleaning of the filter screens 522 without disassembling the filter box 1, making maintenance convenient. Two filter screens 522 are fixed to the left and right sides of the filter frame 521 by means of adhesive, snap-fit, or screw connection. The filter screen 522 on the left side is used to intercept large-particle dust remaining in the airflow, while the filter screen 522 on the right side is used to prevent activated carbon particles from falling off. At the same time, the two filter screens 522 work together to fix the activated carbon layer 524 and perform preliminary filtration. The activated carbon layer 524 is sandwiched between the two filter screens 522. Utilizing its porous adsorption characteristics, the activated carbon layer 524 effectively adsorbs fine dust remaining in the airflow as well as harmful gases such as methane and hydrogen sulfide, achieving deep purification.

[0046] With the above structure, the air filter 52 performs dry adsorption on the airflow after the water filter 51, avoiding direct contact between activated carbon and water mist, which would reduce the adsorption efficiency. This significantly improves the removal capacity of harmful gases and fine dust, overcoming the problems of single function and insufficient purification capacity of existing devices.

[0047] Furthermore, the tops of both the filter frame 511 and the filter frame 521 are fixed with several handles 53 and two locking strips 54 by welding, screwing, or snap-fitting. The handles 53 are easy for operators to grip and are used to lift the filter frame 511 or the filter frame 521 upwards or downwards from the filter box 1, improving the convenience of replacement and maintenance.

[0048] The locking strips 54 extend horizontally, with two strips 54 protruding from the first slide bar 512 and the second slide bar 523, respectively. That is, the two strips 54 protrude from the front and rear sides of the water filter frame 511 and the filter frame 521, allowing them to abut against the upper surface of the filter box 1. When the water filter frame 511 or the filter frame 521 slides downwards along the slide groove to its limit position, the locking strips 54 form a blocking engagement with the upper surface of the filter box 1, preventing the water filter frame 511 and the filter frame 521 from accidentally sliding downwards or detaching from the slide groove under gravity, thus providing a limiting and anti-detachment function. Furthermore, the design of the locking strips 54 protruding from the slide bars eliminates the need for additional locking components, resulting in a simple structure and ease of manufacturing. The cooperation between the handle 53 and the locking strips 54 enables quick and reliable placement and positioning of the water filter element 51 and the air filter element 52, reducing maintenance difficulty and improving the safety and convenience of equipment use.

[0049] Furthermore, the dustproof ventilation device also includes an upper connecting plate 6, a lower connecting plate 7, multiple flexible damping arrays 8, two baffles 9, and a support assembly. The upper connecting plate 6 is fixed to the bottom of the filter box 1 by welding, screwing, or snap-fitting, and the lower connecting plate 7 is fixed to the top of the support assembly by welding, screwing, or snap-fitting. The upper connecting plate 6 and the lower connecting plate 7 are slidably connected in the vertical direction, facilitating quick assembly and disassembly between the filter box 1 and the load-bearing plate 10, and simplifying equipment transportation and maintenance. The upper and lower ends of the flexible damping arrays 8 are connected to the upper connecting plate 6 and the lower connecting plate 7, respectively. Specifically, the flexible damping arrays 8 are rubber damping columns. When the dustproof ventilation device is working, the water supply assembly and the air blowing assembly will vibrate. The flexible damping arrays 8 utilize the elasticity and damping properties of rubber to undergo elastic deformation and consume vibration energy during vibration, thereby reducing the vibration transmitted from the filter box 1 to the load-bearing plate 10, and playing a role in vibration reduction and noise reduction.

[0050] The connecting plate 6 includes a first flat plate, two first vertical plates, and two first anti-detachment plates. The first flat plate extends horizontally, and its upper surface is fixedly connected to the filter box 1 by welding, screwing, or snapping. The first vertical plates extend vertically, and their tops are fixedly connected to the two ends of the first flat plate by welding, screwing, or snapping. The first anti-detachment plates extend horizontally, and their bottoms are fixedly connected to the first vertical plates by welding, screwing, or snapping. The two first anti-detachment plates extend relative to each other.

[0051] The connecting lower plate 7 includes a second flat plate, two second vertical plates, and two second anti-detachment plates. The second flat plate extends horizontally, and the lower surface of the second flat plate is fixedly connected to the load-bearing plate 10 by welding, screwing, or snapping. The second vertical plate extends vertically, and the bottom and upper surface of the second vertical plate are fixedly connected by welding, screwing, or snapping. The second anti-detachment plates are fixedly connected to the top of the second vertical plates by welding, screwing, or snapping. The two second anti-detachment plates are arranged facing each other, and the two second vertical plates are located inside the two first vertical plates. The first and second anti-detachment plates are arranged opposite each other in the vertical direction, so that the connecting upper plate 6 and the connecting lower plate 7 form an anti-detachment structure. Since the filter box 1 and the water tank 2 are located above the connecting upper plate 6, the connecting upper plate 6 is pressed down. Moreover, the vibrations brought by the drive motor 42 and the water pump 32 are absorbed by the flexible damping array 8. The connecting upper plate 6, the connecting lower plate 7, and the flexible damping array 8 form a shock-absorbing structure.

[0052] Two baffles 9 are fixedly connected to the front and rear sides of the connecting lower plate 7 by welding, screwing, or snap-fitting, respectively. The two baffles 9 and the connecting lower plate 7 cooperate to enclose multiple flexible damping arrays 8, which are arranged in an array. The baffles 9 restrict the horizontal displacement of the flexible damping arrays 8, preventing them from shifting laterally or falling out of their installation position during long-term vibration. The array distribution ensures that the damping force is evenly distributed, improving the stability and reliability of the damping effect.

[0053] Furthermore, the support assembly includes a load-bearing plate 10 and four support columns 11, the tops of which are fixed to the four corners of the load-bearing plate 10. The support columns 11 provide stable bottom support for the entire device, ensuring that the equipment can be placed stably on uneven ground in the coal mine. Each support column 11 includes a fixed column 111, a cylinder 112, a push plate 113, a telescopic rod 114, a connecting seat 115, and a caster wheel 116.

[0054] The top of the fixed column 111 is fixedly connected to the load-bearing plate 10 by welding, screwing or snapping. The fixed column 111 provides installation space for internal components and supports the whole.

[0055] The cylinder 112 is fixed inside the fixed column 111 by welding, screwing or snapping, and the output end of the cylinder 112 is fixedly connected to the push plate 113 by welding, screwing or snapping. The cylinder 112 serves as a power source to generate linear driving force.

[0056] The push plate 113 is fixedly connected to one end of the telescopic rod 114 by welding, screwing, or snap-fitting. The push plate 113 evenly transmits the output force of the cylinder 112 to the telescopic rod 114, preventing the telescopic rod 114 from being directly subjected to force and thus causing it to deviate. The other end of the telescopic rod 114 is fixedly connected to the connecting seat 115. The telescopic rod 114 moves vertically and extends under the drive of the push plate 113, transmitting displacement. A through hole is provided at the bottom of the fixed column 111 for the telescopic rod 114, the connecting seat 115, and the moving wheel 116 to pass through.

[0057] The movable wheel 116 is rotatably connected to the connecting seat 115. The connecting seat 115 connects the telescopic rod 114 and the movable wheel 116, so that the movable wheel 116 can rise and fall synchronously with the telescopic rod 114.

[0058] When the cylinder 112 drives the moving wheel 116 to extend beyond the bottom of the fixed column 111 and contact the ground, the moving wheel 116 lifts the entire device, facilitating its movement. When the cylinder 112 drives the moving wheel 116 to retract into the fixed column 111, the bottom of the fixed column 111 directly contacts the ground, providing stable support and preventing displacement of the device during operation. This achieves rapid switching between moving and fixed states, meeting the needs of frequent device movement in coal mines while ensuring sufficient stability during operation.

[0059] Furthermore, the blower assembly 4 includes a mounting bracket 41, a drive motor 42, and a fan blade 43.

[0060] The mounting bracket 41 is fixedly connected to the inner wall of the filter box 1 by welding, screwing, or snap-fitting, providing a stable mounting base for the drive motor 42 and preventing vibration displacement during motor operation. The drive motor 42 is fixedly connected to the mounting bracket 41 by welding, screwing, or snap-fitting, and the drive motor 42, as a power source, converts electrical energy into mechanical rotational energy. The drive motor 42 is connected to the fan blades 43, driving the fan blades 43 to rotate and generate directional airflow. The fan blades 43 face the filter 5 and are corresponding to each other, so that the airflow generated by the fan blades 43 is directly facing the filter 5, thereby directing the water mist formed at the outlet of the water supply component 3 towards the filter 5, increasing the probability of collision between the water mist and dust, and guiding the dust-laden water mist into the filter 5 for purification in an orderly manner. The blowing component 4 and the water supply component 3 work together to form directional water mist, improving dust removal efficiency and airflow directionality, and overcoming the problems of disordered water mist diffusion and insufficient contact with dust in existing devices.

[0061] Furthermore, the water delivery assembly 3 includes a water delivery pipe 31, a water pump 32, and a spray head 33. The water pump 32 is connected to both the water tank 2 and one end of the water delivery pipe 31. The water pump 32 is used to extract water from the water tank 2 and apply pressure, providing power for water delivery. The other end of the water delivery pipe 31 is connected to the spray head 33, and the water delivery pipe 31 is used to deliver the water pressurized by the water pump 32 to the spray head 33. The spray head 33 corresponds to the fan blade 43. The spray head 33 atomizes the water and sprays it out, which, in conjunction with the airflow generated by the fan blade 43, forms a directional water mist. The spray nozzle is located inside the filter box 1, with the spray head 33 facing the filter box 1. The spray head 33 corresponds to the fan blade 43, so that the spray area generated by the spray nozzle can be directionally blown by the blowing assembly 4. Through the sequential connection of the water pump 32, water supply pipe 31 and spray head 33, stable water delivery and atomization are achieved. The spray head 33 corresponds to the fan blade 43, so that the water mist can be accurately blown by the airflow towards the filter 5, improving the binding efficiency of water mist and dust, avoiding water mist diffusion and waste, thereby enhancing the dust removal effect.

[0062] Example 2:

[0063] Reference Figure 1 The difference between this embodiment and embodiment 1 is that this embodiment also includes a control panel 12 for controlling the dustproof ventilation device, as detailed below.

[0064] In this embodiment, the control panel 12 has multiple control buttons on its surface. These buttons are electrically connected to the water pump 32, drive motor 42, and cylinder 112, respectively, to control their operation. The control panel 12 provides a centralized operating interface for operators, facilitating external control of the equipment. Each control button corresponds to a different component, enabling independent control and preventing mutual interference. The control buttons, electrically connected to the water pump 32, control its start and stop, thereby controlling the opening and closing of the spray dust suppression function. The control buttons, electrically connected to the drive motor 42, control its start and stop, thereby controlling the airflow of the blower assembly 4. The control buttons, electrically connected to the cylinder 112, control its extension and retraction, thereby controlling the raising and lowering of the moving wheels 116, enabling switching between mobile and stationary states. Operators can complete all operations without directly contacting the power components, improving operational safety and convenience, reducing labor intensity, and simultaneously achieving integrated control of the three functions of spraying, airflow, and movement.

[0065] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A dust-proof ventilation device for use in a coal mine underground, characterized in that, Includes a filter box (1), a blower assembly (4), and a filter (5); The blower assembly (4) and the filter (5) are both installed in the filter box (1). The filter box (1) is also provided with a spray nozzle, which is located between the blower assembly (4) and the filter (5). The blowing direction of the blower assembly (4) is set to correspond to the spray area of ​​the spray nozzle and also to the filter surface of the filter (5).

2. The dust control and ventilation device for underground coal mines as described in claim 1, characterized in that: The filter (5) includes a water filter element (51) and an air filter element (52); Both the water filter element (51) and the air filter element (52) can be detachably connected to the inside of the filter box (1), and the water filter element (51) and the air filter element (52) are arranged sequentially along the air blowing direction of the air blowing assembly (4).

3. The dust control and ventilation device for underground coal mines as described in claim 2, characterized in that: The water filter element (51) includes a water filter frame (511), a collection box (513), and a water absorption curtain (514). The filter frame (511) is a hollow rectangle. The filter frame (511) is slidably connected to the filter box (1) in the vertical direction. The water absorption curtain (514) is fixed to the inner wall of the filter frame (511) and covers the internal space of the filter frame (511). The collection box (513) is fixedly connected to the bottom of the filter frame (511), and the upper surface of the collection box (513) is provided with several recessed holes, and the front side of the collection box (513) is provided with a drain hole (515). A drain pipe (516) is provided on the front side of the filter box (1). One end of the drain pipe (516) is provided with a plug (517), and the other end of the drain pipe (516) is connected to the drain hole (515).

4. The dust control and ventilation device for underground coal mines as described in claim 3, characterized in that: The air filter element (52) includes a filter frame (521), two filter screens (522) and an activated carbon layer (524). The filter frame (521) is a hollow rectangle. The filter frame (521) is slidably connected to the filter box in the vertical direction. The two filter screens (522) are fixed on the left and right sides of the filter frame (521) respectively. The activated carbon layer (524) is sandwiched between the two filter screens (522).

5. The dust control and ventilation device for underground coal mines as described in claim 4, characterized in that: Each of the filter frames (511) and the filter frame (521) has several handles (53) and two locking strips (54) fixed to its top. The locking strips (54) extend horizontally, and the two locking strips (54) protrude from the front and rear sides of the filter frame (511) and the filter frame (521) respectively, so that the locking strips (54) can abut against the top wall of the filter box (1).

6. The dust control and ventilation device for underground coal mines as described in claim 1, characterized in that: The dustproof ventilation device also includes an upper connecting plate (6), a lower connecting plate (7), multiple flexible damping arrays (8), two baffles (9) and a support assembly; The upper connecting plate (6) is fixed below the filter box (1), the lower connecting plate (7) is fixed above the support assembly, the upper connecting plate (6) and the lower connecting plate (7) are slidably connected in the vertical direction, and the flexible damping array (8) is sandwiched between the upper connecting plate (6) and the lower connecting plate (7). The two baffles (9) are respectively fixedly connected to the front and rear sides of the lower connecting plate (7). The two baffles (9) and the lower connecting plate (7) cooperate to enclose the multiple flexible damping arrays (8) within.

7. The dust control and ventilation device for underground coal mines as described in claim 6, characterized in that: The support assembly includes a load-bearing plate (10) and four support columns (11), with the tops of the four support columns (11) respectively fixed at the four corners of the load-bearing plate (10); Each of the support columns (11) includes a fixed column (111), a cylinder (112), a push plate (113), a telescopic rod (114), a connecting seat (115), and a moving wheel (116). The top end of the fixed column (111) is fixedly connected to the load-bearing plate (10). The cylinder (112) is fixed inside the fixed column (111), and the output end of the cylinder (112) is fixedly connected to the push plate (113). The push plate (113) is fixedly connected to one end of the telescopic rod (114), and the other end of the telescopic rod (114) is fixedly connected to the connecting seat (115). The movable wheel (116) is rotatably connected to the connecting seat (115) so that the cylinder (112) can drive the movable wheel (116) to extend out of the bottom end of the fixed column (111) to connect with the ground or retract into the fixed column (111).

8. The dust control and ventilation device for underground coal mines as described in claim 7, characterized in that: The blower assembly (4) includes a mounting bracket (41), a drive motor (42), and fan blades (43). The fixed frame (41) is fixedly connected to the inner wall of the filter box (1), the drive motor (42) is fixedly connected to the fixed frame (41), and the drive motor (42) is drivenly connected to the fan blade (43).

9. The dust control and ventilation device for underground coal mines as described in claim 8, characterized in that: The dustproof ventilation device also includes a water tank (2) and a water delivery assembly (3) for delivering water in the water tank (2) to the spray nozzle. The water delivery assembly (3) includes a water delivery pipe (31), a water pump (32), and a spray head (33); The water pump (32) is connected to one end of the water tank (2) and the water supply pipe (31), and the other end of the water supply pipe (31) is connected to the spray head (33). The spray nozzle is located on one side of the spray head (33) facing the inside of the filter box (1), and the spray head (33) corresponds to the fan blade (43).

10. The dust control and ventilation device for underground coal mines as described in claim 9, characterized in that: The dustproof ventilation device also includes a control panel (12), on the surface of which are provided multiple control buttons. The control buttons are electrically connected to the water pump (32), the drive motor (42) and the cylinder (112) respectively, so as to control the operation of the water pump (32), the drive motor (42) and the cylinder (112).

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