A dust suppression and environmental protection device for coal mining faces

Abstract

This utility model provides a dust suppression and environmental protection device for coal mining faces, including an open annular support frame with two parallel connecting plates fixed at both ends. First nozzles are evenly arranged circumferentially on the outer side of the support frame, and an adjustment mechanism is centrally mounted on one side of the support frame to adjust the angle between the axis of the first nozzles and the axis of the support frame. A water distribution pipe is located on the side of the support frame away from the connecting plates, and second nozzles are evenly arranged axially on the side of the water distribution pipe away from the adjustment mechanism. In this utility model, the first nozzles and the water distribution pipe are connected to an external high-pressure water source during use. The first nozzles and the second nozzles on the water distribution pipe spray water mist to suppress dust. The first nozzles are directed towards the dust source generated by the cutting drum, and the second nozzles are directed towards the coal cut by the cutting drum and loaded onto the conveyor, suppressing secondary dust generated during coal loading.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal mine environmental protection equipment, specifically relating to a dust suppression and environmental protection device for coal mining faces. Background Technology

[0002] During coal mine tunneling operations, large amounts of dust are continuously generated during cutting and loading processes, and diffuse and remain suspended within the working face space under the influence of ventilation airflow. High concentrations of dust not only seriously threaten the health of workers but also significantly increase the risk of coal dust explosions. Currently, spray dust suppression is one of the widely used dust control technologies.

[0003] In the prior art, Chinese utility model patent document CN214616640U discloses a spray dust suppression device for coal mine tunneling machines. This device uses a cam, a rotating shaft, and a motor. The motor drives the rotating shaft to rotate, which in turn drives the cam to rotate, creating both vertical and horizontal forces on the spray gun, allowing it to swing up and down and increasing the spray radius. However, because it uses a single nozzle, the spray area in the horizontal range is limited, making it impossible to simultaneously cover both the cutting and loading areas, thus affecting the dust suppression effect.

[0004] Therefore, there is an urgent need to design a dust suppression and environmental protection device for coal mining faces that can simultaneously cover the cutting and loading areas and fundamentally improve dust suppression effectiveness to solve the current technical problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, this utility model provides a dust suppression and environmental protection device for coal mining faces that can simultaneously cover the cutting and loading areas, thereby improving the dust suppression effect from the source.

[0006] The technical solution of this utility model is: a dust reduction and environmental protection device for coal mining face, including an open ring support frame, with two parallel connecting plates fixedly installed at both ends of the support frame, and the distance between the two connecting plates matching the width of the coal mining machine rocker arm.

[0007] The support frame has a first nozzle evenly arranged around its circumference on its outer side. One side of the first nozzle is hinged to the support frame. An adjustment mechanism is centrally mounted on one side of the support frame. The adjustment mechanism is used to adjust the angle between the axis of the first nozzle and the axis of the support frame.

[0008] A water distribution pipe is provided on the side of the support frame away from the connecting plate. The water distribution pipe is parallel to the axis of the support frame. Second nozzles are evenly arranged along the axial direction on the side of the water distribution pipe away from the adjustment mechanism.

[0009] Furthermore, the adjustment mechanism includes a mounting bracket fixedly disposed on one side of the support frame. A threaded telescopic adjustment assembly and an adjustment plate are disposed on the mounting bracket along the axis of the support frame. The threaded telescopic adjustment assembly is used to adjust the distance between the adjustment plate and the support frame along the axis of the support frame. The adjustment plate is provided with a guide tube corresponding to the first nozzle. One end of the guide tube is hinged to the adjustment plate, and a guide rod is slidably disposed inside the other end of the guide tube. The end of the guide rod facing away from the guide tube is fixedly connected to the end of the first nozzle.

[0010] Furthermore, the threaded telescopic adjustment assembly includes a support cylinder fixedly disposed on one side of the mounting frame along the axis of the support frame. An adjustment rod is internally threaded to one end of the support cylinder opposite to the mounting frame. The end of the adjustment rod opposite to the support cylinder passes through the adjustment plate and is rotatably connected to the adjustment plate.

[0011] Furthermore, a handle is provided at the end of the adjusting rod opposite to the support cylinder, and a locking nut is fitted on the outer side of the adjusting rod, which abuts against or moves away from the end of the support cylinder.

[0012] Furthermore, a first connector is provided on one side of the first nozzle, and a second connector is provided on the outer side of the water distribution pipe near the support frame.

[0013] Furthermore, a mounting groove is provided at one end of the connecting plate away from the support frame, and the mounting groove is a U-shaped groove.

[0014] Furthermore, a plug is provided at one end of the water distribution pipe, and a fixing seat is fixedly provided at the other end of the water distribution pipe, with the fixing seat fixedly provided on the outside of the support frame.

[0015] Furthermore, a first hinge ear plate is fixedly provided on one side of the first nozzle, and the first hinge ear plate is hinged to a first hinge seat fixedly provided on the outside of the support frame.

[0016] Furthermore, a second hinged lug corresponding to the guide tube is fixedly provided on the adjustment plate, and the second hinged lug is hinged to a second hinged seat fixedly provided on the guide tube at one end opposite to the guide rod.

[0017] The beneficial effects of this utility model are:

[0018] (1) In this utility model, the first nozzle and the water distribution pipe are connected to an external high-pressure water source during use. Water is supplied by the external high-pressure water source. The first nozzle and the second nozzle on the water distribution pipe spray water mist to suppress dust. The first nozzle is directed towards the dust source generated by the cutting drum, and the second nozzle sprays water mist towards the direction of the coal cut by the cutting drum towards the conveyor for loading, thereby suppressing secondary dust generated during the coal loading process.

[0019] (2) The first nozzle is evenly arranged along the circumference of the support frame and the angle is adjustable. It can flexibly adjust the spray direction according to the dust generation position of the coal cutting drum to achieve precise dust reduction at the source.

[0020] (3) The support frame is an open ring, and the spacing of the connecting plate matches the width of the coal mining machine rocker arm. It can be quickly installed with the rocker arm. It is necessary to pre-weld studs that match the installation slots on the coal mining machine rocker arm. The connecting plate is assembled and fixed on the rocker arm by the cooperation of the nut and the stud. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the dust suppression and environmental protection device for coal mining faces in this utility model.

[0022] Figure 2 This is a schematic diagram of the installation structure of the dust suppression and environmental protection device for coal mining faces in this utility model.

[0023] Figure 3 This is a partial structural diagram of the adjustment mechanism in this utility model. Detailed Implementation

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0025] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 3As shown, a dust suppression and environmental protection device 100 for a coal mining face is disclosed, including an open annular support frame 1. Two parallel connecting plates 11 are fixedly installed at both ends of the support frame 1, and the distance between the two connecting plates 11 matches the width of the coal mining machine rocker arm 200. A first nozzle 2 is evenly arranged along its circumference on the outer side of the support frame 1. One side of the first nozzle 2 is hinged to the support frame 1. An adjustment mechanism 5 is centrally mounted on one side of the support frame 1. The adjustment mechanism 5 is used to adjust the angle between the axis of the first nozzle 2 and the axis of the support frame 1. A water distribution pipe 3 is arranged on the side of the support frame 1 away from the connecting plates 11. The water distribution pipe 3 is parallel to the axis of the support frame 1. A second nozzle 4 is evenly arranged along its axial direction on the side of the water distribution pipe 3 away from the adjustment mechanism 5.

[0027] In this embodiment, the first nozzle 2 and the water distribution pipe 3 are connected to an external high-pressure water source during use. Water is supplied by the external high-pressure water source, and the second nozzle 4 on the first nozzle 2 and the water distribution pipe 3 sprays water mist to suppress dust. The first nozzle 2 is directed towards the dust source generated by the cutting drum 300, while the second nozzle 4 sprays water mist towards the direction in which the coal cut by the cutting drum 300 is loaded onto the conveyor, suppressing secondary dust generated during coal loading. The first nozzle 2 is evenly arranged around the support frame 1 and its angle is adjustable, allowing for flexible adjustment of the spray direction according to the dust-generating position of the coal cutting drum 300, achieving precise dust suppression at the source. The support frame 1 is an open ring, and the spacing of the connecting plates 11 matches the width of the coal mining machine rocker arm 200, enabling quick installation with the rocker arm. A U-shaped mounting groove 12 is provided on the end of the connecting plate 11 facing away from the support frame 1. During installation, studs matching the mounting slot 12 are pre-welded onto the rocker arm 200 of the coal mining machine, and the connecting plate 11 is assembled and fixed onto the rocker arm 200 by the cooperation of the nut and the stud.

[0028] In some embodiments, the adjustment mechanism 5 includes a mounting bracket 53 fixedly mounted on one side of the support frame 1. A threaded telescopic adjustment assembly and an adjustment plate 54 are mounted on the mounting bracket 53 along the axis of the support frame 1. The threaded telescopic adjustment assembly is used to adjust the distance between the adjustment plate 54 and the support frame 1 along the axis of the support frame 1. The adjustment plate 54 is provided with conduits 56 corresponding one-to-one with the first nozzles 2. One end of the conduit 56 is hinged to the adjustment plate 54, and a guide rod 57 is slidably mounted inside the other end of the conduit 56. One end of the guide rod 57, facing away from the conduit 56, is fixedly connected to the end of the first nozzle 2. The threaded telescopic adjustment assembly changes the relative distance between the adjustment plate 54 and the support frame 1. When the adjustment plate 54 moves, it drives the conduit 56, which is hinged to it, to move. The conduit 56 pushes the end of the first nozzle 2 through the guide rod 57 slidably mounted inside it, causing the first nozzle 2 to swing around its hinge point with the support frame 1, thereby changing the angle between the axis of the first nozzle 2 and the axis of the support frame 1. The sliding fit between the guide tube 56 and the guide rod 57 compensates for the change in the distance of the hinge point during the movement of the adjusting plate 54.

[0029] In some embodiments, the threaded telescopic adjustment assembly includes a support cylinder 51 fixedly disposed on one side of the mounting frame 53 along the axis of the support frame 1. An adjusting rod 52 is internally threaded to one end of the support cylinder 51 facing away from the mounting frame 53. The other end of the adjusting rod 52, facing away from the support cylinder 51, passes through an adjusting plate 54 and is rotatably connected to the adjusting plate 54. The support cylinder 51 is fixed to the mounting frame 53, and the adjusting rod 52 is threadedly connected to the support cylinder 51. When the adjusting rod 52 is rotated, it moves axially relative to the support cylinder 51. Since the end of the adjusting rod 52 passes through the adjusting plate 54 and is rotatably connected to it, the axial displacement of the adjusting rod 52 directly pushes the adjusting plate 54 to move along the axis of the support frame 1, thereby achieving angle adjustment of the first nozzle 2.

[0030] In some embodiments, a handle 521 is provided at the end of the adjusting rod 52 facing away from the support cylinder 51, and a locking nut 55 is fitted on the outer side of the adjusting rod 52, which abuts against or moves away from the end of the support cylinder 51. After the angle of the first nozzle 2 is adjusted to the correct position, the locking nut 55 is rotated to make it abut against the end of the support cylinder 51. The self-locking effect of the thread and the friction generated by the abutment restrict the rotation of the adjusting rod 52 relative to the support cylinder 51, thereby achieving position locking. When readjustment is required, the locking nut 55 is loosened first, and then the adjusting rod 52 is rotated through the handle 521.

[0031] In some embodiments, a first connector 21 is provided on one side of the first nozzle 2, and a second connector 31 is provided on the outer side of the water distribution pipe 3 near the support frame 1. The first connector 21 is connected to the first nozzle 2, and the second connector 31 is connected to the water distribution pipe 3. An external high-pressure water source supplies water to the corresponding nozzle through the connectors, forming independent water supply circuits that can be controlled separately as needed.

[0032] In some embodiments, a mounting groove 12 is provided on one end of the connecting plate 11 away from the support frame 1. The mounting groove 12 is a U-shaped groove. The opening of the mounting groove 12 at the end of the connecting plate 11 is oriented to facilitate the insertion of a pre-set fixing bolt on the rocker arm 200 from the side. After being locked with fasteners, it is reliably fixed. When disassembling, the device can be removed from the side simply by loosening the fasteners.

[0033] In some embodiments, a plug 33 is provided at one end of the water distribution pipe 3, and a fixing seat 32 is fixedly provided at the other end of the water distribution pipe 3. The fixing seat 32 is fixedly provided on the outside of the support frame 1. One end of the water distribution pipe 3 is closed by the plug 33 to form a blind end, and the other end is rigidly connected to the support frame 1 by the fixing seat 32. After the external high-pressure water enters from the second connector 31 of the water distribution pipe 3, it is distributed along the axial direction of the water distribution pipe 3 and sprayed evenly from each second nozzle 4. The plug 33 prevents water from flowing out from the end and ensures the water pressure of the end nozzle.

[0034] In some embodiments, a first hinge ear plate 22 is fixedly provided on one side of the first nozzle 2, and the first hinge ear plate 22 is hinged to a first hinge seat 13 fixedly provided on the outside of the support frame 1.

[0035] In some embodiments, a second hinged ear plate 59 corresponding to the conduit 56 is fixedly disposed on the adjusting plate 54. The second hinged ear plate 59 is hinged to a second hinge seat 58 fixedly disposed on the conduit 56 at one end opposite to the guide rod 57. Through the hinge between the second hinged ear plate 59 and the second hinge seat 58, the conduit 56 can swing relative to the adjusting plate 54, thereby transmitting the linear motion of the adjusting plate 54 into the swinging motion of the conduit 56 and the extension and retraction motion of the guide rod 57.

[0036] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0037] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A coal mine coal mining face dust fall environmental protection device, characterized in that: It includes an open annular support frame, with two parallel connecting plates fixedly installed at both ends of the support frame, and the distance between the two connecting plates matching the width of the coal mining machine rocker arm; The support frame has a first nozzle evenly arranged around its circumference on its outer side. One side of the first nozzle is hinged to the support frame. An adjustment mechanism is centrally mounted on one side of the support frame. The adjustment mechanism is used to adjust the angle between the axis of the first nozzle and the axis of the support frame. A water distribution pipe is provided on the side of the support frame away from the connecting plate. The water distribution pipe is parallel to the axis of the support frame. Second nozzles are evenly arranged along the axial direction on the side of the water distribution pipe away from the adjustment mechanism.

2. The coal mine coal mining face dust fall environmental protection device according to claim 1, characterized in that: The adjustment mechanism includes a mounting bracket fixedly mounted on one side of the support frame. A threaded telescopic adjustment assembly and an adjustment plate are provided on the mounting bracket along the axis of the support frame. The threaded telescopic adjustment assembly is used to adjust the distance between the adjustment plate and the support frame along the axis of the support frame. The adjustment plate is provided with a guide tube corresponding to the first nozzle. One end of the guide tube is hinged to the adjustment plate, and a guide rod is slidably mounted inside the other end of the guide tube. The end of the guide rod facing away from the guide tube is fixedly connected to the end of the first nozzle.

3. The coal mine coal mining face dust fall environmental protection device according to claim 2, characterized in that: The threaded telescopic adjustment assembly includes a support cylinder fixedly disposed on one side of the mounting frame along the axis of the support frame. An adjustment rod is internally threaded to one end of the support cylinder opposite to the mounting frame. The other end of the adjustment rod opposite to the support cylinder passes through the adjustment plate and is rotatably connected to the adjustment plate.

4. The coal mine coal mining face dust fall environmental protection device according to claim 3, characterized in that: A handle is provided at one end of the adjusting rod away from the support cylinder, and a locking nut is fitted on the outside of the adjusting rod, which abuts against or moves away from the end of the support cylinder.

5. The coal mine coal mining face dust fall environmental protection device according to claim 1, characterized in that: A first connector is provided on one side of the first nozzle, and a second connector is provided on the outer side of the water distribution pipe near the support frame.

6. The coal mine coal mining face dust fall environmental protection device according to claim 1, characterized in that: The connecting plate has a mounting groove at one end away from the support frame, and the mounting groove is a U-shaped groove.

7. The coal mine coal mining face dust fall environmental protection device according to claim 1, characterized in that: One end of the water distribution pipe is provided with a plug, and the other end of the water distribution pipe is fixedly provided with a fixing seat, which is fixedly provided on the outside of the support frame.

8. The dust suppression and environmental protection device for coal mining faces according to claim 1, characterized in that: A first hinge ear plate is fixedly provided on one side of the first nozzle, and the first hinge ear plate is hinged to a first hinge seat fixedly provided on the outside of the support frame.

9. The coal mine coal mining face dust fall environmental protection device according to claim 2, characterized in that: The adjustment plate is fixedly provided with a second hinge ear plate corresponding to the conduit. The second hinge ear plate is hinged to a second hinge seat fixedly provided on the conduit at one end away from the guide rod.

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