Air dust removal device for coal mining

Abstract

The utility model relates to the field of coal mining, and discloses an air dust removal device for coal mining, which comprises a box body, the bottom end of the outer wall of the box body is fixedly connected with a connecting pipe, the outer side wall of the box body is provided with a fan, and the suction end of the fan is fixedly connected with a telescopic hose. And a dust collection cover is fixedly connected to the end, away from the draught fan, of the telescopic hose, a reciprocating dust collection mechanism is arranged on the side wall of the outer side of the box body and comprises two sets of fixing blocks, a motor is fixedly connected to the top ends of the outer walls of the upper set of fixing blocks, and a connecting rod is hinged to the surface of a sliding block. In the utility model, by virtue of the linkage of components such as the motor, the half gear and the volute spiral spring, the dust collection cover can swing left and right and up and down in a reciprocating manner, so that the dust collection range is greatly widened, dust-containing air at different positions in an underground coal mine can be effectively covered, the dust collection efficiency is obviously improved, and the complicated distribution of underground dust is better dealt with.

Description

Technical Field

[0001] This utility model relates to the field of coal mining, and in particular to an air dust removal device for coal mining. Background Technology

[0002] A coal mine is a mine or shaft used to extract coal, primarily for the purpose of extracting and producing coal. Coal is an important energy resource, widely used in industries such as power generation, metallurgy, and chemicals. The operation of a coal mine involves multiple stages, including exploration, development, mining, transportation, and processing.

[0003] During coal mining operations, a large amount of dust is generated. This dust not only seriously pollutes the underground working environment, but also poses a great threat to the health of miners. For example, long-term inhalation of dust may lead to occupational diseases such as pneumoconiosis. Therefore, dust removal treatment is necessary.

[0004] Currently, existing air dust removal devices used in coal mines have some shortcomings: In terms of dust collection range, the dust collection components of some dust removal devices are in fixed positions, and can only collect dust in fixed areas. They cannot flexibly adjust the dust collection angle and range according to the actual distribution of dust underground, resulting in dust in some areas not being effectively collected, low dust removal efficiency, and difficulty in ensuring the air quality of the entire underground working environment. Therefore, an air dust removal device for coal mines is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an air dust removal device for coal mines, which aims to improve the problem that the existing technology can only suck dust from a fixed area and cannot flexibly adjust the suction angle and range according to the actual distribution of dust underground.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an air dust removal device for coal mining, comprising a housing, a connecting pipe fixedly connected to the bottom end of the outer wall of the housing, a fan provided on the outer side wall of the housing, a telescopic hose fixedly connected to the suction end of the fan, a dust collection hood fixedly connected to the end of the telescopic hose away from the fan, and a reciprocating dust collection mechanism provided on the outer side wall of the housing.

[0007] The reciprocating vacuuming mechanism includes a fixed block, and there are two sets of fixed blocks. The top of the outer wall of the upper fixed block is fixedly connected to a motor, and the bottom of the outer wall of the lower fixed block is fixedly connected to a guide sleeve. The inner wall of the lower fixed block is elastically connected to a connecting arm through a spiral spring. The output shaft of the motor is fixedly connected to a half gear, and the top of the outer wall of the connecting arm is fixedly connected to a gear. The end of the connecting arm away from the fixed block is hinged to a connecting rod, and the side wall of the connecting rod is slidably connected to a slider. The surface of the slider is hinged to a connecting rod.

[0008] As a further description of the above technical solution:

[0009] The inner wall of the connecting pipe is provided with a retractable sewage discharge mechanism, which includes a conical cylinder. The inner wall of the top of the conical cylinder is elastically connected to a limit ball through a return spring, and the inner wall of the conical cylinder is provided with a discharge valve.

[0010] As a further description of the above technical solution:

[0011] One end of the spiral spring is fixedly connected to the outer wall of the bottom end of the connecting arm, and the other end of the spiral spring is fixedly connected to the inner wall of the lower fixing block.

[0012] As a further description of the above technical solution:

[0013] The gear meshes with the half gear, and the half gear is rotatably connected to the top of the outer wall of the upper fixed block.

[0014] As a further description of the above technical solution:

[0015] The guide sleeve has a wave groove on its surface, and the end of the connecting rod away from the slider is slidably connected to the inner wall of the wave groove of the guide sleeve.

[0016] As a further description of the above technical solution:

[0017] The two sets of fixing blocks are fixedly connected to the outer sidewall of the box, and the connecting rod is fixedly connected to the outer sidewall of the dust hood.

[0018] As a further description of the above technical solution:

[0019] The conical cylinder is slidably connected to the inner wall of the bottom end of the connecting pipe. A ball groove is provided on the inner side wall of the connecting pipe, and the outer wall of the limiting ball is in contact with the inner wall of the ball groove.

[0020] As a further description of the above technical solution:

[0021] One end of the reset spring is fixedly connected to the outer wall of the limiting ball, and the other end of the reset spring is fixedly connected to the inner wall of the top of the conical cylinder. The limiting ball is slidably connected to the inner wall of the top of the conical cylinder.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by means of the linkage of components such as motor, half gear, and spiral spring, the dust collection hood can swing back and forth left and right and up and down, which greatly expands the dust collection range, effectively covers the dust-laden air in different locations in the coal mine, significantly improves the dust removal efficiency, and better copes with the complex distribution of dust in the mine.

[0024] 2. In this utility model, the retractable sewage discharge mechanism utilizes the coordinated operation of components such as a conical cylinder, a limiting ball, and a return spring to achieve the function of flexibly adjusting the position of the conical cylinder according to the actual situation of the dust collection container. This effectively avoids the problem of dust generation due to unsuitable distance during sewage discharge, while making the dust discharge operation more convenient and reducing the difficulty of dust treatment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an air dust removal device for coal mine operation proposed in this utility model;

[0026] Figure 2 This is a partial cross-sectional view of the fixing block and connecting arm of an air dust removal device for coal mining proposed in this utility model.

[0027] Figure 3 This utility model proposes an air dust removal device for coal mine operation. Figure 2 Enlarged structural diagram of section A;

[0028] Figure 4 This is a partial cross-sectional view of the connecting pipe and conical cylinder of an air dust removal device for coal mines proposed in this utility model.

[0029] Figure 5 This utility model proposes an air dust removal device for coal mine operation. Figure 4 Enlarged structural diagram of section B.

[0030] Legend:

[0031] 1. Housing; 2. Fan; 3. Telescopic hose; 4. Dust hood; 5. Connecting pipe; 6. Telescopic sewage discharge mechanism; 61. Conical cylinder; 62. Discharge valve; 63. Return spring; 64. Limit ball; 7. Reciprocating dust collection mechanism; 71. Fixing block; 72. Guide sleeve; 73. Motor; 74. Half gear; 75. Connecting arm; 76. Gear; 77. Connecting rod; 78. Slider; 79. Connecting rod; 710. Spiral spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-3This utility model provides an embodiment of an air dust removal device for coal mines, comprising a housing 1. The top of the housing 1 has a convection hole, and a filter screen is installed inside the convection hole. When a fan 2 generates suction, dust in the coal mine air is drawn into the housing 1 from the dust collection hood 4, while air is discharged outwards from the convection hole at the top of the housing 1. The convection hole is not part of the prior art. A connecting pipe 5 is fixedly connected to the bottom of the outer wall of the housing 1. A retractable sewage discharge mechanism 6 is installed on the inner wall of the connecting pipe 5. The outer side wall of the housing 1 is provided with… The blower 2 has a telescopic hose 3 fixedly connected to its suction end. The end of the telescopic hose 3 away from the blower 2 is fixedly connected to a dust collection hood 4. The blower 2 is existing technology. It generates suction by rotating its internal fan blades. The suction force is generated by the telescopic hose 3, which in turn generates suction force in the dust collection hood 4. This allows dust in the air to be sucked into the interior of the housing 1. Furthermore, by providing the telescopic hose 3, the dust collection hood 4 automatically extends and retracts when it is driven by the reciprocating suction mechanism 7 to swing.

[0034] Reference Figure 2 and Figure 3 A reciprocating vacuuming mechanism 7 is provided on the outer side wall of the housing 1. The reciprocating vacuuming mechanism 7 includes a fixing block 71. Two sets of fixing blocks 71 are fixedly connected to the outer side wall of the housing 1. There are two sets of fixing blocks 71. A motor 73 is fixedly connected to the top of the outer wall of the upper fixing block 71. A bracket is provided on the outside of the motor 73 to support and fix the motor 73. A guide sleeve 72 is fixedly connected to the bottom of the outer wall of the lower fixing block 71. A cavity is opened on the inner side of the guide sleeve 72, and a through corrugated groove is opened on its surface. The width of the corrugated groove matches the sliding end of the connecting rod 79. A connecting arm 75 is elastically connected to the inner wall of the lower fixing block 71 through a spiral spring 710. One end of the spiral spring 710 is fixedly connected to the bottom end of the connecting arm 75. The outer wall of the spiral spring 710 is fixedly connected to the inner wall of the lower fixing block 71. The function of the spiral spring 710 is to automatically reset the gear 76 and the connecting arm 75 after the half gear 74 rotates half a turn and disengages from the gear 76. This allows the connecting arm 75 to drive the dust cover 4 to swing back and forth, making the dust collection range wider.

[0035] Reference Figure 2The output shaft of motor 73 is fixedly connected to a half gear 74, which is rotatably connected to the top of the outer wall of the upper fixed block 71. A gear 76 is fixedly connected to the top of the outer wall of connecting arm 75. Gear 76 meshes with half gear 74. This meshing causes half gear 74 to engage with gear 76 during rotation, thus driving connecting arm 75 to rotate around its rotation center point. After half gear 74 rotates half a turn and its smooth surface can no longer mesh with gear 76, connecting arm 75 is automatically reset by the elastic force of spiral spring 710, waiting for the next rotation of half gear 74 to mesh with gear 76. A connecting rod 77 is hinged to the end of connecting arm 75 away from fixed block 71. Connecting rod 77 is fixedly connected to the outer side wall of dust hood 4. A slider 78 is slidably connected, and a connecting rod 79 is hinged to the surface of the slider 78. A wave groove is formed on the surface of the guide sleeve 72. The end of the connecting rod 79 away from the slider 78 is slidably connected to the inner wall of the wave groove of the guide sleeve 72. When the connecting arm 75 reciprocates, the slider 78 on its outer side will drive the connecting rod 79 to slide in the wave groove of the guide sleeve 72. As the guide sleeve 72 is designed with an arc surface, when the connecting rod 79 slides in the inner wall of the guide sleeve 72, it will pull the slider 78 to drive the connecting rod 77 to swing up and down on the inner side of the connecting arm 75. This will cause the dust hood 4 to swing up and down, thus improving the dust removal efficiency. At the same time, the slider 78 can only slide laterally on the side wall of the connecting rod 77, and the end of the connecting rod 79 can only slide in the inner wall of the wave groove of the guide sleeve 72.

[0036] Reference Figure 4 and Figure 5The retractable sewage discharge mechanism 6 includes a conical cylinder 61. The inner wall of the top of the conical cylinder 61 is elastically connected to a limiting ball 64 via a return spring 63. The conical cylinder 61 is slidably connected to the inner wall of the bottom end of the connecting pipe 5. The conical cylinder 61 can move up and down, thereby adjusting the distance between it and different dust collection containers to prevent the containers from being too low or too far apart, which could easily cause dust to be generated during dumping. A ball groove is provided on the inner side wall of the connecting pipe 5. The outer wall of the limiting ball 64 contacts the inner wall of the ball groove. This contact allows the conical cylinder 61 to be initially positioned and fixed at multiple positions within the connecting pipe 5. Simultaneously, the cooperation between the spherical surface of the limiting ball 64 and the ball groove ensures that the entire structure remains stable without external interference. The ball does not move up or down. One end of the return spring 63 is fixedly connected to the outer wall of the limit ball 64, and the other end of the return spring 63 is fixedly connected to the inner wall of the top of the conical cylinder 61. The function of the return spring 63 is to allow the limit ball 64 to disengage from the ball groove of the current position of the connecting pipe 5 when the limit ball 64 moves with the conical cylinder 61, and to be squeezed by the inner wall of the ball groove until the next set of ball grooves. At this time, the limit ball 64 will be automatically reset by the elastic action of the return spring 63. The limit ball 64 is slidably connected to the inner wall of the top of the conical cylinder 61. The inner wall of the conical cylinder 61 is provided with a discharge valve 62. By rotating the handle on the outside of the discharge valve 62, the discharge valve 62 can be rotated and opened, so that the dust stored inside the box 1 can be discharged to the outside.

[0037] Working principle: When the fan 2 is started, the internal blades of the fan 2 rotate to generate suction. This suction is transmitted to the dust hood 4 through the telescopic hose 3, causing the dust-laden air around the dust hood 4 to be sucked in under the action of pressure difference. Then, it enters the housing 1 along the telescopic hose 3. The dust is retained in the housing 1 for collection, while the air is discharged outward through the convection hole at the top of the housing 1 (the filter screen plays a role in filtering and intercepting dust and preventing the exhaust air from polluting the external environment again), thus realizing the circulation of air and the initial collection of dust.

[0038] Next, after starting motor 73, motor 73 drives half gear 74 to rotate. When the teeth of half gear 74 mesh with gear 76, as half gear 74 rotates, gear 76 in turn drives connecting arm 75 to rotate around its rotation center point. Connecting arm 75 pushes vacuum hood 4 to swing to one side through connecting rod 77. After half gear 74 rotates half a turn, its smooth surface disengages from gear 76. At this time, connecting arm 75 automatically resets under the elastic restoring force of spiral spring 710, driving vacuum hood 4 back to its initial position, waiting for half gear 74 to rotate again. The connecting rod 79 re-engages with the connecting arm 75 after each half-turn rotation. Simultaneously, as the connecting arm 75 reciprocates, the connecting rod 79 slides on the inner wall of the guide sleeve 72. Due to the specific arc design of the wave groove in the guide sleeve 72, the sliding of the connecting rod 79 will pull the slider 78, causing the connecting rod 77 to swing up and down inside the connecting arm 75. This allows the dust hood 4 to not only swing left and right but also up and down, greatly increasing the dust suction range of the dust hood 4 and ensuring that dust-laden air from different locations can be effectively sucked in, thus improving the overall dust removal efficiency.

[0039] When the position of the conical cylinder 61 needs to be adjusted according to the actual situation such as the height of the dust collection container, the conical cylinder 61 can be manually pulled up and down to slide inside the connecting pipe 5. During the sliding process, the limiting ball 64 will move with the conical cylinder 61 and be squeezed by the inner wall of the ball groove inside the connecting pipe 5, causing the limiting ball 64 to move towards the inner wall of the top of the conical cylinder 61, compressing the return spring 63. The limiting ball 64 will disengage from the ball groove at the current position and continue to move the conical cylinder 61. When it moves to a suitable position, so that the limiting ball 64 is aligned with the next set of ball grooves in the connecting pipe 5, the limiting ball 64 will be reset under the elastic restoring force of the return spring 63, and its outer wall will re-contact the inner wall of the ball groove, thus initially fixing the position of the conical cylinder 61. In this way, the distance between the conical cylinder 61 and the dust collection container can be flexibly adjusted to avoid affecting the sewage discharge operation due to an unsuitable distance (such as the container being too low and the conical cylinder 61 being too high, which may cause dust to be generated when dumping dust).

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air dust removal device for coal mining, comprising a housing (1), characterized in that: A connecting pipe (5) is fixedly connected to the bottom of the outer wall of the box (1). A fan (2) is provided on the outer side wall of the box (1). A telescopic hose (3) is fixedly connected to the suction end of the fan (2). A dust collection hood (4) is fixedly connected to the end of the telescopic hose (3) away from the fan (2). A reciprocating dust collection mechanism (7) is provided on the outer side wall of the box (1). The reciprocating vacuuming mechanism (7) includes a fixed block (71), which is provided in two sets. The top of the outer wall of the upper fixed block (71) is fixedly connected to a motor (73), and the bottom of the outer wall of the lower fixed block (71) is fixedly connected to a guide sleeve (72). The inner wall of the lower fixed block (71) is elastically connected to a connecting arm (75) through a spiral spring (710). The output shaft of the motor (73) is fixedly connected to a half gear (74). The top of the outer wall of the connecting arm (75) is fixedly connected to a gear (76). The end of the connecting arm (75) away from the fixed block (71) is hinged to a connecting rod (77). The side wall of the connecting rod (77) is slidably connected to a slider (78). The surface of the slider (78) is hinged to a connecting rod (79).

2. The air dust removal device for coal mine operation according to claim 1, characterized in that: The inner wall of the connecting pipe (5) is provided with a retractable sewage discharge mechanism (6), which includes a conical cylinder (61). The inner wall of the top of the conical cylinder (61) is elastically connected to a limit ball (64) by a reset spring (63). The inner wall of the conical cylinder (61) is provided with a discharge valve (62).

3. The air dust removal device for coal mine operation according to claim 1, characterized in that: One end of the spiral spring (710) is fixedly connected to the outer wall of the bottom end of the connecting arm (75), and the other end of the spiral spring (710) is fixedly connected to the inner wall of the lower fixing block (71).

4. The air dust removal device for coal mine operation according to claim 1, characterized in that: The gear (76) meshes with the half gear (74), and the half gear (74) is rotatably connected to the top of the outer wall of the upper fixed block (71).

5. The air dust removal device for coal mine operation according to claim 1, characterized in that: The guide sleeve (72) has a wave groove on its surface, and the end of the connecting rod (79) away from the slider (78) is slidably connected to the inner wall of the wave groove of the guide sleeve (72).

6. The air dust removal device for coal mine operation according to claim 1, characterized in that: The two sets of fixing blocks (71) are fixedly connected to the outer sidewall of the box (1), and the connecting rod (77) is fixedly connected to the outer sidewall of the dust hood (4).

7. The air dust removal device for coal mine operation according to claim 2, characterized in that: The conical cylinder (61) is slidably connected to the inner wall of the bottom end of the connecting pipe (5). The inner side wall of the connecting pipe (5) is provided with a ball groove, and the outer wall of the limiting ball (64) is in contact with the inner wall of the ball groove.

8. The air dust removal device for coal mine operation according to claim 2, characterized in that: One end of the reset spring (63) is fixedly connected to the outer wall of the limiting ball (64), and the other end of the reset spring (63) is fixedly connected to the inner wall of the top of the conical cylinder (61). The limiting ball (64) is slidably connected to the inner wall of the top of the conical cylinder (61).

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