A coal mine electromechanical fully mechanized support spraying dust removal equipment

Abstract

The application belongs to the technical field of coal mine underground dust removal, and particularly relates to a coal mine electromechanical fully-mechanized support spraying dust removal equipment, which comprises a shell and a spraying dust removal pipe. Opposite ends of the shell are respectively constituted into an air inlet end and an air outlet end. The spraying dust removal pipe comprises a first spraying dust removal pipe, a second spraying dust removal pipe and a third spraying dust removal pipe. The first spraying dust removal pipe, the second spraying dust removal pipe and the third spraying dust removal pipe are sequentially and fixedly arranged on the inner wall of the shell along the axial direction of the shell from the air inlet end to the air outlet end. The first spraying dust removal pipe, the second spraying dust removal pipe and the third spraying dust removal pipe are all annular structures, and the inner wall of each of the first spraying dust removal pipe, the second spraying dust removal pipe and the third spraying dust removal pipe is provided with a plurality of spraying pipes. The equipment provided in the application can make dust-containing air flow sequentially pass through three layers of water mist by arranging three layers of annular spraying dust removal pipes, so that three times of dust settlement are realized, and the dust removal efficiency is significantly improved.

Description

Technical Field

[0001] This application relates to the field of underground dust removal technology in coal mines, and in particular to a spray dust removal device for a fully mechanized coal mining support. Background Technology

[0002] In fully mechanized coal mining faces, large amounts of high-concentration dust are generated during processes such as coal cutting by the mining machine, hydraulic support shifting, and scraper conveyor transport. This dust diffuses and spreads throughout the hydraulic support area, severely deteriorating the underground working environment and affecting equipment visibility and worker occupational health. To reduce underground dust concentration, spray dust suppression equipment needs to be installed on the fully mechanized mining supports.

[0003] Existing dust suppression spray systems mostly employ fixed single-point or linear spraying. These systems typically have one or more nozzles fixed in position on a hydraulic support. The nozzles are connected to a water pump via high-pressure water pipes, and the high-pressure water is atomized and sprayed into the dusty area. The spray direction is fixed, and the atomized water mist is distributed in a point-like or linear pattern in space. When dust-laden airflow passes through, it comes into contact with the water mist, wetting the dust and causing it to settle.

[0004] However, this single-point or linear spray arrangement limits the water mist coverage to a localized area in the direction of the nozzle's spray. When dust-laden airflow passes through, it can only come into contact with the water mist in that localized area, failing to adequately capture dust particles. Furthermore, the inconsistent size and poor uniformity of the atomized particles further reduce the binding efficiency between the water mist and dust. These factors result in persistent and effective dust settling, low dust settling efficiency, and unsatisfactory dust removal performance. Summary of the Invention

[0005] This application provides a spray dust suppression device for fully mechanized coal mining supports to solve the technical problems of low dust settling efficiency and unsatisfactory dust removal effect caused by the limited spray coverage and inability to form multi-level full-section water mist capture in existing spray dust suppression devices used for fully mechanized coal mining supports.

[0006] To achieve the above objectives, this application provides a spray dust suppression device for coal mine electromechanical fully mechanized mining supports, comprising: The housing; the two opposite ends of the housing form the air inlet and air outlet respectively; And, a spray dust removal pipe, the spray dust removal pipe including: a first spray dust removal pipe, a second spray dust removal pipe and a third spray dust removal pipe, the first spray dust removal pipe, the second spray dust removal pipe and the third spray dust removal pipe are fixed to the inner wall of the shell in sequence at intervals along the axial direction of the shell and from the air inlet end to the air outlet end; The first, second, and third spray dust removal pipes are all annular structures, and the inner walls of the first, second, and third spray dust removal pipes are each equipped with multiple spray pipes. The input ends of the first, second, and third spray dust removal pipes are all connected to a high-pressure water pump.

[0007] Preferably, the housing has a structure in which the inner wall diameter gradually decreases from the air inlet end to the air outlet end.

[0008] Preferably, the first spray dust removal pipe is located at two-fifths of the height of the inner wall of the housing, the second spray dust removal pipe is located at three-fifths of the height of the inner wall of the housing, and the third spray dust removal pipe is located at four-fifths of the height of the inner wall of the housing.

[0009] Preferably, multiple spray pipes are evenly distributed on the inner walls of the corresponding first spray dust removal pipe, second spray dust removal pipe, and third spray dust removal pipe.

[0010] Preferably, the number of spray pipes on the first, second, and third spray dust removal pipes is 20 to 30.

[0011] Preferably, it also includes a settling tank, which is disposed at the air inlet end of the housing.

[0012] Preferably, the spray dust removal pipe further includes multiple sets of fixing components; the multiple sets of fixing components are respectively disposed on the side wall surfaces of the first spray dust removal pipe, the second spray dust removal pipe and the third spray dust removal pipe, and the multiple sets of fixing components are distributed in a ring array.

[0013] Preferably, the fixing assembly includes: a first fixing rod and a second fixing rod, one end of the first fixing rod and one end of the second fixing rod being fixedly connected to the side wall of the spray dust removal pipe; The other end of the first fixing rod is connected to the surface of the first fixing plate; The other end of the second fixing rod is connected to the surface of the second fixing plate; Both the first fixing plate and the second fixing plate are provided with connection holes; In addition, fasteners, which pass through the connection holes, securely install the first fixing plate and the second fixing plate to the inner wall of the housing.

[0014] Preferably, a positioning plate is provided between the first fixing plate and the second fixing plate; One end of the positioning plate is rotatably connected to the first fixed plate via a hinge; The other end of the positioning plate is provided with a card plate, and the second fixing plate has a card slot that engages with the card plate.

[0015] Preferably, the number of fixing components is four sets.

[0016] Based on the above technical solutions, this application provides a spray dust removal device for a fully mechanized coal mining support, comprising: a shell, with opposite ends forming an air inlet and an air outlet; and spray dust removal pipes, including a first spray dust removal pipe, a second spray dust removal pipe, and a third spray dust removal pipe. The first, second, and third spray dust removal pipes are sequentially fixed to the inner wall of the shell along its axial direction, from the air inlet to the air outlet. All three pipes are annular structures, and their inner walls are each equipped with multiple spray pipes. The input ends of all three pipes are connected to a high-pressure water pump. This application, through multiple annular spray dust removal pipes spaced sequentially along the airflow direction, forms multiple full-section water mist curtains within the shell, allowing the dust-laden airflow to be intercepted and settled step by step, thereby improving the dust collection and settling efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A cross-sectional view of a spray dust removal device for a fully mechanized coal mining support provided in an embodiment of this application; Figure 2 This is a schematic diagram of the first spray dust removal pipe structure of the spray dust removal equipment for the fully mechanized coal mining support provided in the embodiments of this application; Figure 3 This is a schematic diagram of the second spray dust removal pipe structure of the spray dust removal equipment for the fully mechanized coal mining support provided in the embodiments of this application; Figure 4 This is a schematic diagram of the third spray dust removal pipe structure of the spray dust removal equipment for the fully mechanized coal mining support provided in the embodiments of this application; Figure 5 For this application Figure 2 Enlarged view of point A in the middle.

[0019] Illustration: The components include: 1. Housing; 11. Air inlet; 12. Air outlet; 2. Spray dust removal pipe; 21. First spray dust removal pipe; 22. Second spray dust removal pipe; 23. Third spray dust removal pipe; 24. Spray pipe; 25. Fixing assembly; 251. First fixing rod; 252. Second fixing rod; 253. First fixing plate; 254. Second fixing plate; 255. Connecting hole; 256. Fastener; 257. Positioning plate; 258. Clamping plate; 3. Settling tank. Detailed Implementation

[0020] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application.

[0021] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0022] The terms "first," "second," "third," etc., are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms can be used interchangeably where appropriate.

[0023] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0024] In the field of dust suppression technology in underground coal mines, existing spray dust suppression equipment used for fully mechanized mining supports often suffers from limited spray coverage and difficulty in forming a continuous water mist barrier across the entire cross-section of the dust channel. These spray dust suppression devices typically employ fixed single-point or linear spraying, with one or more nozzles positioned at fixed locations on the hydraulic support. The nozzles spray in a fixed direction, and the atomized water mist is distributed in a point-like or linear pattern in space. When dust-laden airflow passes through, the water mist coverage is limited to a localized area in the direction of the nozzle spray, preventing sufficient capture of dust particles. Furthermore, the atomized particles from the nozzles are of varying sizes and have poor uniformity, further reducing the binding efficiency between the water mist and dust. This results in insufficient and continuous effective dust settling, low dust settling efficiency, and unsatisfactory dust removal effects, negatively impacting the improvement of the underground working environment and the occupational health of workers.

[0025] To address the aforementioned problems, this application provides a spray dust suppression device for fully mechanized coal mining supports. See also... Figure 1 The coal mine electromechanical fully mechanized mining support spray dust removal equipment includes a shell 1 and a spray dust removal pipe 2.

[0026] Specifically, the housing 1 is a structural component open at both ends. The two opposite ends of the housing 1 constitute an air inlet 11 and an air outlet 12, respectively. The air inlet 11 is used to receive the dust-laden airflow, and the air outlet 12 is used to discharge the purified gas. The housing 1 is installed on the fully mechanized coal mining support. The dust-laden airflow enters the interior of the housing 1 from the air inlet 11, flows along the axial direction of the housing 1 from the air inlet 11 to the air outlet 12, and is discharged from the air outlet 12.

[0027] The spray dust removal pipe 2 is disposed inside the housing 1. The spray dust removal pipe 2 includes a first spray dust removal pipe 21, a second spray dust removal pipe 22, and a third spray dust removal pipe 23. The first spray dust removal pipe 21, the second spray dust removal pipe 22, and the third spray dust removal pipe 23 are fixedly and sequentially to the inner wall of the housing 1 along the axial direction of the housing 1 from the air inlet end 11 to the air outlet end 12. After the dust-laden airflow enters from the air inlet end 11, it passes sequentially through the locations of the first spray dust removal pipe 21, the second spray dust removal pipe 22, and the third spray dust removal pipe 23, and then exits from the air outlet end 12.

[0028] The first spray dust removal pipe 21, the second spray dust removal pipe 22, and the third spray dust removal pipe 23 are all annular structures. Annular structure means that the pipe body of the spray dust removal pipe is circular, arranged circumferentially along the inner wall of the shell 1, and surrounds the inner wall of the shell 1.

[0029] Multiple spray pipes 24 are provided on the inner walls of the first spray dust removal pipe 21, the second spray dust removal pipe 22, and the third spray dust removal pipe 23. One end of each spray pipe 24 is fixedly connected to the inner wall of the corresponding spray dust removal pipe, and the other end of each spray pipe 24 opens towards the center of the annular structure. The input ends of the first spray dust removal pipe 21, the second spray dust removal pipe 22, and the third spray dust removal pipe 23 are all connected to a high-pressure water pump. The high-pressure water pump pressurizes atmospheric water and delivers it to the inside of the first spray dust removal pipe 21, the second spray dust removal pipe 22, and the third spray dust removal pipe 23. The high-pressure water is simultaneously sprayed out from each spray pipe 24 and atomized into water mist.

[0030] When the dust suppression spray system of the fully mechanized coal mining support is in operation, the high-pressure water pump starts, delivering high-pressure water to the first dust suppression pipe 21, the second dust suppression pipe 22, and the third dust suppression pipe 23. The high-pressure water is distributed along the inner cavity of each dust suppression pipe to each spray pipe 24, from which it is sprayed out and atomized into water mist. Since all three layers of dust suppression pipes are annular structures, the sprayed water mist forms an annular water mist layer on the radial cross-section of the shell 1. The three layers of dust suppression pipes are arranged sequentially and at intervals along the axial direction of the shell 1, forming three continuous water mist curtains inside the shell 1.

[0031] The dust-laden airflow enters the housing 1 through the inlet 11 and flows axially from the inlet 11 to the outlet 12. The airflow first passes through the first water mist curtain formed by the first spray dust removal pipe 21, where some dust particles are wetted and agglomerated. The airflow continues through the second water mist curtain formed by the second spray dust removal pipe 22, where the remaining dust particles are again captured by the water mist. Finally, the airflow passes through the third water mist curtain formed by the third spray dust removal pipe 23, where a small amount of dust particles are captured by the water mist. After being treated by these three water mist curtains, the purified gas is discharged from the outlet 12 of the housing 1.

[0032] As can be seen from the above technical solution, the coal mine electromechanical fully mechanized mining support spray dust removal equipment provided in this embodiment guides the dust-laden airflow along the axial direction of the housing 1 through the air inlet 11 and air outlet 12. Inside the housing 1, a first spray dust removal pipe 21, a second spray dust removal pipe 22, and a third spray dust removal pipe 23 are sequentially arranged along the airflow direction. Each annular spray dust removal pipe has multiple spray pipes 24 on its inner wall. A high-pressure water pump provides high-pressure water to the three layers of spray dust removal pipes, causing the spray pipes 24 to spray water mist, forming three continuous water mist curtains inside the housing 1. After entering from the air inlet 11, the dust-laden airflow passes through the three layers of water mist curtains sequentially along the axial direction. Each time it passes through a layer of water mist curtain, it completes one dust capture and settling, achieving three consecutive dust removals of the dust-laden airflow. This solution solves the shortcomings of existing single-point or linear sprays with limited coverage. The water mist can cover the entire channel cross-section inside the housing 1, giving dust particles multiple opportunities to be captured, thus improving dust settling efficiency and dust removal effect.

[0033] In some embodiments, see Figure 1 The housing 1 has a structure in which the inner wall diameter gradually decreases from the air inlet end 11 to the air outlet end 12.

[0034] Specifically, the inner diameter of the air inlet 11 of the housing 1 is larger than that of the air outlet 12. Along the axial direction of the housing 1 from the air inlet 11 to the air outlet 12, the inner diameter of the housing 1 gradually decreases. This gradually decreasing inner diameter structure creates a constricted airflow channel inside the housing 1. When the dust-laden airflow enters the housing 1 from the air inlet 11, the large diameter of the air inlet 11 can accommodate a larger flow rate of dust-laden airflow, reducing the flow velocity upon entry and allowing larger dust particles in the airflow to settle pre-settle under gravity. As the dust-laden airflow flows towards the air outlet 12, the inner diameter of the housing 1 gradually decreases, and the airflow velocity gradually increases, allowing the dust-laden airflow to pass through the water mist curtain formed by the three spray pipes 24 at an appropriate speed, ensuring the collision efficiency between dust particles and water mist particles. Simultaneously, the gradually decreasing inner diameter structure also facilitates the sliding of settled sludge down the inner wall of the housing 1 to the air inlet 11.

[0035] In this embodiment, the housing 1 is configured such that the inner wall diameter gradually decreases from the air inlet 11 to the air outlet 12, forming a larger diameter air inlet at the air inlet 11. This reduces the entry velocity of the dust-laden airflow, which is beneficial for the pre-settling of large-diameter dust particles. The gradually decreasing inner wall diameter of the constricted channel causes the airflow velocity to gradually increase along the flow direction, ensuring that the dust-laden airflow has an appropriate flow velocity when passing through the water mist curtain, thereby improving the collision efficiency between dust and water mist.

[0036] In some embodiments, see Figure 1 The first spray dust removal pipe 21 is located at two-fifths of the height of the inner wall of the housing 1, the second spray dust removal pipe 22 is located at three-fifths of the height of the inner wall of the housing 1, and the third spray dust removal pipe 23 is located at four-fifths of the height of the inner wall of the housing 1.

[0037] Specifically, taking the air inlet 11 of the housing 1 as the starting point for height calculation, the height of the inner wall of the housing 1 is calculated from the position of the air inlet 11. The first spray dust removal pipe 21 is fixed at two-fifths of the height of the inner wall of the housing 1, the second spray dust removal pipe 22 is fixed at three-fifths of the height of the inner wall of the housing 1, and the third spray dust removal pipe 23 is fixed at four-fifths of the height of the inner wall of the housing 1. The three layers of spray dust removal pipes are arranged sequentially and at intervals along the axial direction inside the housing 1, with the distance between adjacent layers of spray dust removal pipes being equal, each being one-fifth of the height of the inner wall of the housing 1. This equidistant arrangement allows the dust-laden airflow to travel the same distance after passing through the first layer of water mist curtain before entering the second layer of water mist curtain, and then the same distance before entering the third layer of water mist curtain. The dust-laden airflow has sufficient flow distance between adjacent layers of water mist curtain, allowing dust particles that were not captured in the previous stage to redistribute, avoiding the formation of airflow dead zones, and ensuring that each layer of water mist curtain can contact new dust particles.

[0038] In this embodiment, the first spray dust removal pipe 21, the second spray dust removal pipe 22, and the third spray dust removal pipe 23 are respectively located at two-fifths, three-fifths, and four-fifths of the height of the inner wall of the housing 1, so that the three layers of spray dust removal pipes are evenly distributed along the axial direction inside the housing 1. This evenly spaced arrangement ensures that the flow distance of the dust-laden airflow between each layer of water mist curtain is consistent, ensuring that the dust removal load of each layer of water mist curtain is evenly distributed, and preventing the dust removal efficiency of a certain layer of water mist curtain from being reduced due to excessive load.

[0039] In some embodiments, see Figures 2-4 Multiple spray pipes 24 are evenly distributed on the inner walls of the corresponding first spray dust removal pipe 21, second spray dust removal pipe 22 and third spray dust removal pipe 23.

[0040] Specifically, on the inner wall of the first spray dust removal pipe 21, multiple spray pipes 24 are distributed at equal angular intervals along the circumference of the first spray dust removal pipe 21, with equal included angles between adjacent spray pipes 24. On the inner wall of the second spray dust removal pipe 22, multiple spray pipes 24 are distributed at equal angular intervals along the circumference of the second spray dust removal pipe 22, with equal included angles between adjacent spray pipes 24. On the inner wall of the third spray dust removal pipe 23, multiple spray pipes 24 are distributed at equal angular intervals along the circumference of the third spray dust removal pipe 23, with equal included angles between adjacent spray pipes 24. This uniform distribution ensures that the water mist sprayed from the spray pipes 24 is simultaneously distributed in all directions of the circumference of the annular structure, forming a complete, continuous, and uniformly dense annular water mist layer on the radial cross-section of the shell 1. When the dust-laden airflow passes through the water mist layer, regardless of the location of the dust particles on the radial cross-section of the shell 1, they can collide with the water mist particles, eliminating any blind spots not covered by the water mist.

[0041] In some embodiments, see Figures 2-4 The inner walls of the first spray dust removal pipe 21, the second spray dust removal pipe 22, and the third spray dust removal pipe 23 are each equipped with 20 to 30 spray pipes 24 circumferentially. The number of spray pipes 24 on each layer of spray dust removal pipes is controlled within the range of 20 to 30, which can be selected according to the actual working conditions to ensure that the water mist can cover the circumferential area of ​​the entire annular structure, while avoiding insufficient water pressure in a single spray pipe due to an excessive number of pipes.

[0042] In this embodiment, by setting the number of spray pipes 24 on each of the three layers of spray dust removal pipes to 20 to 30, it is beneficial to ensure that the water mist of each layer of spray dust removal pipe can fully cover the circumferential area of ​​the annular structure, while also helping to maintain the working water pressure of each spray pipe 24.

[0043] In some embodiments, see Figure 1 The coal mine electromechanical fully mechanized mining support spray dust removal equipment also includes a settling tank 3, which is located at the air inlet end 11 of the shell 1.

[0044] Specifically, the settling tank 3 is located at the air inlet end 11 of the shell 1. The settling tank 3 is a downwardly recessed trough-shaped structure located at the lowest point of the shell 1. Dust particles that are captured by water mist and settle down mix with water to form sludge. Under the action of gravity, the sludge flows downward along the inner wall of the shell 1 and collects in the settling tank 3 at the bottom of the air inlet end 11. The recessed structure of the settling tank 3 can hold a certain amount of sludge, preventing the sludge from accumulating on the inner wall of the shell 1 or rising again with the airflow. When the sludge in the settling tank 3 accumulates to a certain amount, it can be discharged through an external sewage pipe or by manual cleaning.

[0045] In this embodiment, a settling tank 3 is provided at the air inlet 11 of the housing 1, so that the sludge that has been captured by water mist and settled down can be collected into the settling tank 3 under the action of gravity, thereby realizing the centralized collection and discharge of sludge. The concave structure of the settling tank 3 can effectively accommodate the settled sludge, preventing the sludge from accumulating on the inner wall of the housing 1 or rising again with the airflow, thus ensuring the continuous and stable operation of the dust removal equipment.

[0046] In some embodiments, see Figures 2-4 The spray dust removal pipe 2 also includes multiple sets of fixing components 25. Multiple sets of fixing components 25 are respectively provided on the side wall of the first spray dust removal pipe 21, the side wall of the second spray dust removal pipe 22 and the side wall of the third spray dust removal pipe 23, and the multiple sets of fixing components 25 are distributed in a ring array.

[0047] Specifically, one end of the fixing component 25 is fixedly connected to the side wall of the corresponding spray dust removal pipe, and the other end of the fixing component 25 is fixedly connected to the inner wall of the housing 1, thereby fixing the first spray dust removal pipe 21, the second spray dust removal pipe 22, and the third spray dust removal pipe 23 to the inner wall of the housing 1 respectively. Multiple sets of fixing components 25 are arranged in a ring array along the circumference of the spray dust removal pipe, so that the supporting force of the fixing components 25 on the spray dust removal pipe is evenly distributed along the circumference.

[0048] In some embodiments, see Figure 5 The fixing component 25 includes a first fixing rod 251, a second fixing rod 252, a first fixing plate 253, a second fixing plate 254, a connecting hole 255, and a fastener 256.

[0049] Specifically, one end of the first fixing rod 251 is fixedly connected to the side wall of the spray dust removal pipe 2, and the other end of the first fixing rod 251 is connected to the surface of the first fixing plate 253. One end of the second fixing rod 252 is fixedly connected to the side wall of the spray dust removal pipe 2, and the other end of the second fixing rod 252 is connected to the surface of the second fixing plate 254. The first fixing rod 251 and the second fixing rod 252 are arranged at intervals along the axial direction of the spray dust removal pipe 2, with the first fixing rod 251 located near the air inlet end 11 and the second fixing rod 252 located near the air outlet end 12. A connecting hole 255 is provided on the surface of the first fixing plate 253, and a connecting hole 255 is provided on the surface of the second fixing plate 254. Fasteners 256 are inserted into the connecting holes 255 to fix the first fixing plate 253 and the second fixing plate 254 to the inner wall of the housing 1.

[0050] In some embodiments, see Figure 5 A positioning plate 257 is provided between the first fixing plate 253 and the second fixing plate 254. One end of the positioning plate 257 is rotatably connected to the first fixing plate 253 by a hinge, and the other end of the positioning plate 257 is provided with a locking plate 258. The second fixing plate 254 has a locking groove that engages with the locking plate 258.

[0051] Specifically, the positioning plate 257 is located between the first fixing plate 253 and the second fixing plate 254. The lower end of the positioning plate 257 is connected to the outer wall of the first fixing plate 253 via a hinge, and the positioning plate 257 can rotate around the hinge. The upper end of the positioning plate 257 is provided with a retaining plate 258, which protrudes towards the second fixing plate 254. The outer wall of the second fixing plate 254 has a retaining groove, the position of which corresponds to the retaining plate 258. When the positioning plate 257 rotates upward to a vertical position, the retaining plate 258 engages with the retaining groove, connecting the first fixing plate 253 and the second fixing plate 254 into a whole.

[0052] During installation of the fixing component 25, the first fixing plate 253 and the second fixing plate 254 are first fixedly installed to the inner wall of the housing 1 using fasteners 256. Then, the positioning plate 257 is rotated upwards to make the locking plate 258 snap into the slot. After the locking plate 258 engages with the slot, the relative position between the first fixing plate 253 and the second fixing plate 254 is fixed. Even if the fasteners 256 loosen due to vibration, the first fixing plate 253 and the second fixing plate 254 will not shift relative to each other, thus maintaining the installation posture of the spray dust removal pipe 2 unchanged.

[0053] In this embodiment, a positioning plate 257 is provided between the first fixing plate 253 and the second fixing plate 254, and a locking plate 258 is provided on the positioning plate 257. A slot is provided on the second fixing plate 254. The engagement of the locking plate 258 with the slot achieves a secondary locking between the first fixing plate 253 and the second fixing plate 254. This structure, based on the fixing of the first fixing plate 253 and the second fixing plate 254 by fasteners 256, adds a mechanical interlock to prevent the spray dust removal pipe 2 from tilting due to loosening of the fixing plate caused by vibration, thus ensuring the installation stability of the spray dust removal pipe 2 inside the housing 1.

[0054] In some embodiments, see Figures 2-4 The number of fixed components 25 is four sets.

[0055] Specifically, the spray dust removal pipe 2 includes a first spray dust removal pipe 21, a second spray dust removal pipe 22, and a third spray dust removal pipe 23. Four sets of fixing components 25 are provided on the side wall of the first spray dust removal pipe 21, and these four sets of fixing components 25 are arranged in a circular array along the circumference of the first spray dust removal pipe 21. Four sets of fixing components 25 are provided on the side wall of the second spray dust removal pipe 22, and these four sets of fixing components 25 are arranged in a circular array along the circumference of the third spray dust removal pipe 23.

[0056] Four sets of fixing components 25 securely install the first spray dust removal pipe 21, the second spray dust removal pipe 22, and the third spray dust removal pipe 23 to the inner wall of the housing 1. The four sets of fixing components 25 are arranged at equal angular intervals along the circumference of the spray dust removal pipes, with an included angle of 90 degrees between adjacent sets of fixing components 25. This arrangement ensures that the supporting force of the fixing components 25 on the spray dust removal pipes is evenly distributed circumferentially, maintaining the stable fixed position of the spray dust removal pipes inside the housing 1. This prevents displacement due to gravity or vibration, avoiding displacement or shaking of the spray dust removal pipes during operation, ensuring accurate direction of the water mist sprayed from the spray pipes 24, and maintaining the continuity and uniformity of the three-layer water mist curtain inside the housing 1.

[0057] Similar parts between the embodiments provided in this application can be referred to mutually. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods extended from the solution of this application without creative effort shall fall within the scope of protection of this application.

Claims

1. A spray dust suppression device for a fully mechanized coal mining support, characterized in that, include: Housing (1); the two opposite ends of the housing (1) respectively form an air inlet (11) and an air outlet (12). And, a spray dust removal pipe (2), the spray dust removal pipe (2) includes: a first spray dust removal pipe (21), a second spray dust removal pipe (22) and a third spray dust removal pipe (23), the first spray dust removal pipe (21), the second spray dust removal pipe (22) and the third spray dust removal pipe (23) are fixed to the inner wall of the housing (1) in sequence at intervals along the axial direction of the housing (1) from the air inlet end (11) to the air outlet end (12); The first spray dust removal pipe (21), the second spray dust removal pipe (22) and the third spray dust removal pipe (23) are all annular structures, and the inner walls of the first spray dust removal pipe (21), the second spray dust removal pipe (22) and the third spray dust removal pipe (23) are all provided with multiple spray pipes (24). The input ends of the first spray dust removal pipe (21), the second spray dust removal pipe (22) and the third spray dust removal pipe (23) are all connected to a high-pressure water pump.

2. The spray dust suppression equipment for coal mine electromechanical fully mechanized mining supports according to claim 1, characterized in that, The housing (1) has a structure in which the inner wall diameter gradually decreases from the air inlet end (11) to the air outlet end (12).

3. The coal mine electromechanical fully mechanized mining support spray dust suppression equipment according to claim 1, characterized in that, The first spray dust removal pipe (21) is located at two-fifths of the height of the inner wall of the housing (1), the second spray dust removal pipe (22) is located at three-fifths of the height of the inner wall of the housing (1), and the third spray dust removal pipe (23) is located at four-fifths of the height of the inner wall of the housing (1).

4. The coal mine electromechanical fully mechanized mining support spray dust suppression equipment according to claim 1, characterized in that, Multiple spray pipes (24) are evenly distributed on the inner walls of the corresponding first spray dust removal pipe (21), second spray dust removal pipe (22) and third spray dust removal pipe (23).

5. The spray dust suppression equipment for coal mine electromechanical fully mechanized mining supports according to claim 1, characterized in that, The number of spray pipes (24) on the first spray dust removal pipe (21), the second spray dust removal pipe (22) and the third spray dust removal pipe (23) are all 20 to 30.

6. The spray dust suppression equipment for coal mine electromechanical fully mechanized mining supports according to claim 1, characterized in that, It also includes a settling tank (3), which is located at the air inlet end (11) of the housing (1).

7. The coal mine electromechanical fully mechanized mining support spray dust suppression equipment according to claim 1, characterized in that, The spray dust removal pipe (2) also includes multiple sets of fixing components (25); the multiple sets of fixing components (25) are respectively disposed on the side wall surfaces of the first spray dust removal pipe (21), the second spray dust removal pipe (22) and the third spray dust removal pipe (23), and the multiple sets of fixing components (25) are distributed in a ring array.

8. The coal mine electromechanical fully mechanized mining support spray dust suppression equipment according to claim 7, characterized in that, The fixing component (25) includes: a first fixing rod (251) and a second fixing rod (252), one end of the first fixing rod (251) and one end of the second fixing rod (252) are fixedly connected to the side wall of the spray dust removal pipe (2); The other end of the first fixing rod (251) is connected to the surface of the first fixing plate (253); The other end of the second fixing rod (252) is connected to the surface of the second fixing plate (254); Both the first fixing plate (253) and the second fixing plate (254) are provided with connecting holes (255); In addition, fasteners (256) are inserted through the connecting hole (255) to fix the first fixing plate (253) and the second fixing plate (254) to the inner wall of the housing (1).

9. The coal mine electromechanical fully mechanized mining support spray dust removal equipment according to claim 8, characterized in that, A positioning plate (257) is provided between the first fixing plate (253) and the second fixing plate (254); One end of the positioning plate (257) is rotatably connected to the first fixing plate (253) via a hinge; The other end of the positioning plate (257) is provided with a card plate (258), and the second fixing plate (254) is provided with a card slot that engages with the card plate (258).

10. The spray dust removal equipment for coal mine electromechanical fully mechanized mining supports according to claim 7, characterized in that, The number of the fixing components (25) is four.

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