Spraying dust-settling device suitable for underground coal dust

Abstract

The utility model relates to the technical field of spraying and dust settling devices, and discloses a spraying and dust settling device suitable for underground coal dust, which comprises a base, a gun carriage, a jet fan, a flow guide component and a multi-stage angle adjusting mechanism. The base is provided with universal wheels and a booster pump, the gun carriage is connected with the base and the jet fan, and the multi-stage angle adjusting mechanism comprises an electric push rod and a rotating disc and can adjust the pitching angle and the horizontal angle of the gun carriage and the jet fan. A flow guide assembly in the jet fan is composed of swingable fan blades, a swing crank and a connecting rod, a driving piece drives the fan blades to be linked through a stepping motor, and the airflow direction and the flow speed are changed. The spraying dust-settling device suitable for underground coal dust solves the problems that a traditional underground dust-settling device cannot dynamically adjust the air flow direction and the flow guide angle, and the spraying coverage range is fixed.

Description

Technical Field

[0001] This utility model relates to the technical field of spray dust suppression devices, and in particular to a spray dust suppression device suitable for underground coal dust. Background Technology

[0002] Coal is my country's primary energy source, and the coal dust generated during its mining process has become a key factor restricting safe production in coal mines. Due to the complexity of coal seam occurrence conditions and the increasing size of mining equipment, the concentration of coal dust at underground working faces has been consistently high. Existing spray devices mostly adopt a fixed deployment mode, which cannot adjust the spray angle in real time as the mining equipment moves, resulting in a high escape rate of coal dust generated by high-speed rotating cutting.

[0003] A Chinese patent with publication number CN220828266U discloses a spray dust suppression device for underground coal mines, which consists of a spray cylinder (with a conical blind hole), an energy storage and pressurization water pipe (including a spray nozzle), an energy storage and pressurization air pipe, a base, and connecting components; high-pressure water is injected into the spray cylinder through the water pipe to form a water curtain, and high-pressure gas impacts the water curtain inside the cylinder through the air pipe, and is atomized and sprayed by reflection through the conical blind hole, so as to realize air and water linkage dust suppression.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: the fixed-angle spray nozzle and unidirectional spray design lack the function of dynamically adjusting the airflow size or guide angle, making it difficult to flexibly adapt to complex underground environments, and the coal dust accumulation area cannot be effectively covered. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing technology lacks the function of dynamically adjusting the airflow size or the guiding angle. To address this, we propose a spray dust suppression device suitable for underground coal dust.

[0006] To achieve the above objectives, this application adopts the following technical solution: a spray dust suppression device suitable for underground coal dust, comprising: a base, a gun mount, and a jet fan. A base for mounting the gun mount is welded in the middle of the base. One end of the gun mount is rotatably connected to the base, and the other end of the gun mount is hinged to the jet fan. A multi-stage angle adjustment mechanism is rotatably connected to the base. The jet fan is internally equipped with a flow guiding component and a driving component.

[0007] The flow guiding assembly includes a sealing ring plate, a support frame, a central shaft seat, fan blades, a bearing housing, a swing crank, and a connecting rod. The sealing ring plate is welded to the inner wall of the jet fan. The support frame is fixedly connected to the inner wall of the sealing ring plate. The central shaft seat is welded to the middle of the support frame. Multiple swingable fan blades are hinged to the central shaft seat. The other ends of the multiple fan blades are rotatably connected to the sealing ring plate through the bearing housing. The bearing housing is circumferentially distributed on the outer wall of the sealing ring plate. The other ends of the multiple fan blades extending out of the bearing housing are fixedly connected to the swing crank. One of the swing cranks is fixedly connected to the drive component. The two ends of the connecting rod are respectively hinged to two adjacent swing cranks.

[0008] Preferably, the driving component includes a stepper motor and a mounting bracket. The mounting bracket is fixedly disposed on the outer wall of the sealing ring plate, and the stepper motor is fixedly mounted on the mounting bracket. The output end of the stepper motor is fixedly connected to one of the swing cranks.

[0009] Preferably, the fan blade includes a fan blade and a rotating rod. One end of the rotating rod passes through the bearing housing and is fixedly connected to the swing crank. One end of the rotating rod is fixedly connected to the fan blade, and the other end of the fan blade is hinged to the central shaft housing via a shaft.

[0010] Preferably, the multi-stage angle adjustment mechanism includes a first electric push rod, a second electric push rod, a first rotating disk, a second rotating disk, and a shaft cylinder. One end of the first electric push rod is hinged to one side of the bottom end of the base via a connector, and the other end of the first electric push rod is fixedly connected to the edge of the first rotating disk via a shaft. The first and second rotating disks are respectively fixedly connected to the gun carriage. The gun carriage is rotatably connected to the shaft cylinder via the first and second rotating disks. The shaft cylinder is welded to the base. One end of the second electric push rod is hinged to the second rotating disk via a connector, and the other end of the second electric push rod is hinged to the outer wall of the jet fan via a connector.

[0011] Preferably, four casters are fixedly installed at the bottom of the base, and a booster pump is fixedly installed on one side of the top of the base.

[0012] Preferably, the jet fan is also equipped with a filter screen, a nozzle and a fan. The jet end of the jet fan is detachably connected to the filter screen, and the other end of the jet fan is fixedly installed with a fan. A nozzle is also fixedly installed between the fan and the flow guiding component of the jet fan. The nozzle is connected to the booster pump through a water supply pipe.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] In this invention, a stepper motor drives a swing crank, which in turn drives the fan blades to deflect synchronously via a connecting rod, thereby changing the airflow guidance angle inside the jet fan; two electric push rods push the rotating disk to control the gun mount to rotate around the shaft, adjusting the jet direction, and ultimately achieving efficient directional dust suppression of the aerosol jet.

[0015] In this invention, the linkage swing design of the fan blades in the flow guide assembly expands the airflow angle adjustment range, allowing the atomized water mist to mix fully with coal dust; the dual electric push rods of the multi-stage angle adjustment mechanism work together to improve the pitch adjustment accuracy of the jet fan, adapting to complex underground spaces; a detachable filter screen combined with a booster pump is used to maintain atomization efficiency while intercepting large coal dust particles, extending the service life of the equipment; and the fan blade swing angle is controlled by a stepper motor, reducing manual intervention and achieving automated dust suppression. Attached Figure Description

[0016] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0017] Figure 1 This is a schematic diagram of the underground coal dust spraying dust suppression device of this utility model;

[0018] Figure 2 This is a schematic diagram of the multi-stage angle adjustment mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the base structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the flow guiding component structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the jet fan of this utility model;

[0022] Figure 6 This is a schematic diagram of the drive component structure of this utility model.

[0023] Legend: 1. Base; 11. Casters; 12. Base; 13. Booster pump; 2. Mount; 3. Jet fan; 31. Filter screen; 32. Nozzle; 33. Fan; 4. Multi-stage angle adjustment mechanism; 41. First electric push rod; 42. Second electric push rod; 43. Rotary disk No. 1; 44. Rotary disk No. 2; 45. Shaft cylinder; 5. Flow guide assembly; 51. Sealing ring plate; 52. Support frame; 53. Central shaft seat; 54. Fan blade; 541. Fan blade; 542. Rotating rod; 55. Bearing seat; 56. Oscillating crank; 57. Connecting rod; 6. Drive component; 61. Stepper motor; 62. Mounting bracket. Detailed Implementation

[0024] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0025] Reference Figures 1-4 As shown, this utility model provides a technical solution for a spray dust suppression device suitable for underground coal dust: A spray dust suppression device suitable for underground coal dust includes: a base 1, a gun frame 2, and a jet fan 3. A base 12 for mounting the gun frame 2 is welded to the middle of the base 1. One end of the gun frame 2 is rotatably connected to the base 1, and the overall stability is enhanced by the support structure of the base 12. The other end of the gun frame 2 is hinged to the jet fan 3. A multi-stage angle adjustment mechanism 4 is rotatably connected to the base 12. The pitch angle of the jet fan 3 is adjusted by the coordinated extension and retraction of the first electric push rod 41 and the second electric push rod 42, thereby expanding the spray coverage area. The jet fan 3 is internally equipped with a flow guiding component 5 and a driving component 6. The flow guiding component 5 drives the fan blade 54 to swing synchronously through a stepper motor 61, so that the airflow direction is adjustable and the mixing efficiency of coal dust and atomized water vapor is improved.

[0026] The airflow guiding assembly 5 includes a sealing ring plate 51, a support frame 52, a central shaft seat 53, a fan blade 54, a bearing seat 55, a swing crank 56, and a connecting rod 57. The sealing ring plate 51 is welded to the inner wall of the jet fan 3 to form a closed air duct to reduce energy loss. The support frame 52 is fixedly connected to the inner wall of the sealing ring plate 51, and the central shaft seat 53 is welded to the middle of the support frame 52. Through the cooperation between the central shaft seat 53 and the bearing seat 55, the fan blade 54 swings around the axis to achieve dynamic adjustment of the airflow guiding angle. Multiple fan blades... The other end of the blade 54 is rotatably connected to the sealing ring plate 51 via the bearing seat 55. The bearing seat 55 is circumferentially distributed on the outer wall of the sealing ring plate 51 to ensure that the blade 54 is subjected to uniform force when it swings. The other ends of the multiple blades 54 extending out of the bearing seat 55 are fixedly connected to the swing crank 56. One of the swing cranks 56 is fixedly connected to the drive component 6. The two ends of the connecting rod 57 are respectively hinged to the two adjacent swing cranks 56. Through the linkage design of the connecting rod 57, the multiple blades 54 deflect synchronously, improving the airflow regulation accuracy.

[0027] Reference Figure 6 As shown in this embodiment: the fan blade 54 includes a fan blade 541 and a rotating rod 542. One end of the rotating rod 542 passes through the bearing seat 55 and is fixedly connected to the swing crank 56. One end of the rotating rod 542 is fixedly connected to the fan blade 541. The other end of the fan blade 541 is hinged to the central shaft seat 53 through a shaft. The rigid connection between the rotating rod 542 and the fan blade 541 ensures the stability of the airflow guidance and avoids the deformation of the fan blade 541 due to the high-pressure airflow.

[0028] Reference Figure 4 As shown in this embodiment: the drive component 6 includes a stepper motor 61 and a mounting bracket 62. The mounting bracket 62 is fixedly installed on the outer wall of the sealing ring plate 51. The stepper motor 61 is fixedly installed on the mounting bracket 62. The output end of the stepper motor 61 is fixedly connected to one of the swing cranks 56. Through the precise control of the stepper motor 61, the swing angle of the fan blade 54 is automatically adjusted, reducing manual intervention.

[0029] Reference Figure 2 As shown in this embodiment: the multi-stage angle adjustment mechanism 4 includes a first electric push rod 41, a second electric push rod 42, a first rotating disk 43, a second rotating disk 44, and a shaft cylinder 45. One end of the first electric push rod 41 is hinged to one side of the bottom end of the base 1 through a connector, and the other end of the first electric push rod 41 is fixedly connected to the edge of the first rotating disk 43 through a shaft. The first rotating disk 43 and the second rotating disk 44 are respectively fixedly connected to the gun mount 2. The gun mount 2 is rotatably connected to the shaft cylinder 45 through the first rotating disk 43 and the second rotating disk 44. The shaft cylinder 45 is welded to the base 12. One end of the second electric push rod 42 is hinged to the second rotating disk 44 through a connector, and the other end of the second electric push rod 42 is hinged to the outer wall of the jet fan 3 through a connector. Through the coordinated extension and retraction of the two electric push rods, the jet fan 3 is driven to rotate around the shaft cylinder 45, so as to achieve rapid adjustment of the pitch angle and accurately aim at the dust source area.

[0030] Reference Figure 2 As shown in this embodiment: four casters 11 are fixedly installed at the bottom of the base 1, and a booster pump 13 is fixedly installed on one side of the top of the base 1. The casters 11 can move flexibly to adapt to the complex terrain underground. At the same time, the booster pump 13 provides a high-pressure water source to ensure the spray intensity of atomized water vapor.

[0031] Reference Figure 5 As shown in this embodiment: the jet fan 3 is also equipped with a filter screen 31, a nozzle 32 and a fan 33. The jet end of the jet fan 3 is detachably connected to the filter screen 31 to intercept large coal dust particles and extend the service life of the equipment. The other end of the jet fan 3 is fixedly installed with the fan 33. The nozzle 32 is also fixedly installed between the fan 33 and the flow guide component 5. The nozzle 32 is connected to the booster pump 13 through a water supply pipe. The high-speed airflow generated by the fan 33 mixes with the atomized water vapor sprayed by the nozzle 32 to form a directional aerosol jet, which enhances the coal dust settling efficiency.

[0032] Working principle: The user can flexibly move the device to the target area underground using the casters 11 on the base 1. The booster pump 13 delivers high-pressure water to the nozzle 32 inside the jet blower 3 through the water pipe, forming micron-level water mist through the atomizing nozzle. At the same time, the blower 33 at the end of the jet blower 3 generates a high-speed airflow, pushing the water mist towards the spray end. After the droplets mix with the airflow, they are sprayed out through the filter screen 31 to suppress dust. The stepper motor 61 drives the swing crank 56 to rotate through the mounting bracket 62, and the linkage rod 57 drives all the fan blades 54 to swing synchronously. The fan blades 541 of each fan blade 54 rotate around the central shaft seat 53 through the rotating rod 542 (angle range 0-90°), adjusting the airflow guidance angle in real time, thereby expanding the jet coverage area and enhancing the turbulent mixing efficiency of water mist and coal dust. In the multi-stage angle adjustment mechanism 4, the first electric push rod 41 pushes the first rotating disk 43 to rotate around the shaft cylinder 45, and the second electric push rod 42 simultaneously pulls the second rotating disk 44. The two work together to drive the gun mount 2 to drive the jet fan 3 to achieve ±30° pitch angle adjustment, ensuring that the aerosol jet is accurately aimed at the dust source area and adapting to the complex underground roadway environment. Through the mechanical linkage adjustment of the flow guide component 5 and the coordinated control of the multi-stage angle adjustment mechanism 4, multi-angle spray dust suppression and dynamic flow guide jet are achieved. The directional airflow in the flow fan 3 is fully mixed with the high-pressure water mist to form a high-speed aerosol jet, achieving rapid settling and diffusion suppression.

[0033] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A spray dust suppression device suitable for use in underground coal dust, characterised in that, include: The base, gun mount, and jet fan are provided. The base has a pedestal welded to the middle for mounting the gun mount. One end of the gun mount is rotatably connected to the base, and the other end of the gun mount is hinged to the jet fan. A multi-stage angle adjustment mechanism is rotatably connected to the pedestal. The jet fan is equipped with a flow guiding component and a drive component. The flow guiding assembly includes a sealing ring plate, a support frame, a central shaft seat, fan blades, a bearing seat, a swing crank, and a connecting rod. The sealing ring plate is welded to the inner wall of the jet fan. The support frame is fixedly connected to the inner wall of the sealing ring plate. The central shaft seat is welded to the middle of the support frame. Multiple swingable fan blades are hinged to the central shaft seat. The other ends of the multiple fan blades are rotatably connected to the sealing ring plate through the bearing seats. The bearing seats are circumferentially distributed on the outer wall of the sealing ring plate. The other ends of the multiple fan blades extending out of the bearing seats are fixedly connected to the swing crank. One of the swing cranks is fixedly connected to the driving component. The two ends of the connecting rod are respectively hinged to two adjacent swing cranks.

2. The spray dust suppression device suitable for use in coal dust underground mine according to claim 1, characterized in that: The driving component includes a stepper motor and a mounting bracket. The mounting bracket is fixedly mounted on the outer wall of the sealing ring plate, and the stepper motor is fixedly mounted on the mounting bracket. The output end of the stepper motor is fixedly connected to one of the swing cranks.

3. The spray dust suppression device suitable for use in coal dust underground mine as claimed in claim 1 wherein: The fan blade includes a fan blade and a rotating rod. One end of the rotating rod passes through a bearing seat and is fixedly connected to a swing crank. One end of the rotating rod is fixedly connected to the fan blade. The other end of the fan blade is hinged to a central shaft seat via a shaft.

4. The spray dust suppression device for coal dust in a mine as claimed in claim 1 wherein: The multi-stage angle adjustment mechanism includes a first electric push rod, a second electric push rod, a first rotating disk, a second rotating disk, and a shaft cylinder. One end of the first electric push rod is hinged to one side of the bottom end of the base via a connector, and the other end of the first electric push rod is fixedly connected to the edge of the first rotating disk via a shaft. The first and second rotating disks are respectively fixedly connected to the gun carriage. The gun carriage is rotatably connected to the shaft cylinder via the first and second rotating disks. The shaft cylinder is welded to the base. One end of the second electric push rod is hinged to the second rotating disk via a connector, and the other end of the second electric push rod is hinged to the outer wall of the jet fan via a connector.

5. The spray dust suppression device suitable for use in coal dust underground mine as claimed in claim 1 wherein: Four casters are fixedly installed at the bottom of the base, and a booster pump is fixedly installed on one side of the top of the base.

6. A spray dust suppression device suitable for use in underground coal dust according to claim 5, characterised in that: The jet fan is also equipped with a filter screen, a nozzle, and a fan. The jet end of the jet fan is detachably connected to the filter screen, and the other end of the jet fan is fixedly installed with a fan. A nozzle is also fixedly installed between the fan and the flow guiding component of the jet fan. The nozzle is connected to the booster pump through a water supply pipe.

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