Dust removal device under mine

Abstract

The utility model discloses a dust removal device under a mine, and relates to the technical field of dust removal equipment in the mine. The device comprises a dry-type dust collector which is arranged in a mine, an air outlet of the dry-type dust collector is located at an air outlet of the mine, an air inlet of the dry-type dust collector is connected with an air pipe, a hanging bracket is installed at the free end of the air pipe, the two ends of the hanging bracket are respectively provided with a back shore supporting foot, the hanging bracket is provided with two sections, and the two sections of the hanging bracket are connected through a telescopic assembly. And one end of the supporting arm assembly is rotationally connected with the hanging bracket, the other end of the supporting arm assembly is rotationally connected with a positive pressure fan, and an air outlet of the positive pressure fan corresponds to an air inlet of the air pipe. According to the utility model, the two telescopically connected hanging brackets are connected through the telescopic assembly, so that the length can be adjusted according to the caliber change of different areas of a mine; the supporting arm assembly moves to the side far away from the air pipe, dust is blown to the air pipe, the dust removal rate is increased, and the air quality in a mine and the operation safety of miners are guaranteed.

Description

A dust removal device for underground mines Technical Field

[0001] This utility model relates to the technical field of dust removal equipment in mines, and in particular to a dust removal device for underground mines. Background Technology

[0002] Mines, as crucial sites for mineral resource extraction, typically consist of vertical or inclined tunnels, roadways, and coal faces, providing access for miners to enter the ore deposit for mining operations. During mining operations, large amounts of dust are generated, which not only affect the working environment but also pose a serious threat to miners' health. Therefore, effective dust control equipment is essential in mines.

[0003] Currently, one of the most commonly used dust removal devices in mines is the dry dust collector, which uses physical methods to capture dust particles in the air, thereby purifying the air. Dry negative pressure dust collectors in mines are mainly used in conjunction with tunneling machines. However, in practical applications, it has been found that because the diameter of the mine shaft varies in different areas, when in a larger diameter area, the negative pressure duct at the front end has difficulty reaching distant areas, leading to increased dust leakage and significantly endangering the health and safety of operators. Summary of the Invention

[0004] To address the aforementioned technical problems, this utility model provides a dust removal device for underground mines, which solves the problem that existing negative pressure ventilation ducts are difficult to extend to distant areas and cause serious dust leakage.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A dust removal device for underground mines includes a dry dust collector placed inside the mine. The dry dust collector's outlet is located at the mine's exhaust port, and the inlet is connected to a duct. A hanger is installed on the free end of the duct, and top support legs are installed at both ends of the hanger. The hanger has two sections, which are connected by a telescopic assembly. The device also includes a support arm assembly, one end of which is rotatably connected to the hanger, and the other end of which is rotatably connected to a positive pressure fan. The outlet of the positive pressure fan corresponds to the inlet of the duct.

[0007] The top and bottom surfaces of the hanger end are provided with top support feet, each of which includes a bearing seat and a wheel. The wheel is rotatably mounted on the bearing seat, and an elastic telescopic rod is connected to the side of the bearing seat. The elastic telescopic rod is fixedly connected to the hanger.

[0008] The elastic telescopic rod includes a cylinder, which is fixedly mounted on a hanger. A piston rod is slidably inserted into one side of the cylinder. One end of the piston rod inside the cylinder is supported and connected to a spring. The other end of the piston rod is connected to the side of a bearing seat. A limit ring is provided on the end of the piston rod inside the cylinder. The outer diameter of the limit ring is larger than the inner diameter at the cylinder outlet.

[0009] The outer circumference of the wheel body is provided with protruding teeth.

[0010] The telescopic assembly includes two cylindrical seats and a sliding rod. The two cylindrical seats are respectively fixedly mounted on the two sections of the hanger. The sliding rod is located between the two cylindrical seats and its two ends are slidably connected to the corresponding cylindrical seats. A sliding block is sleeved in the middle of the sliding rod, and a longitudinal rod is vertically connected to the side of the sliding block. A sliding sleeve is slidably mounted on the longitudinal rod, and diagonal bracing arms are hinged between the two sides of the sliding sleeve and the two cylindrical seats respectively.

[0011] The top of the sliding sleeve is threaded with a locking element. The threaded end of the locking element passes through the top surface of the sliding sleeve and abuts against the outer wall of the longitudinal rod. A handle is provided on the end of the locking element located outside the sliding sleeve.

[0012] The support arm assembly includes a first support arm, one end of which is rotatably connected to the hanger, and the other end of which is rotatably connected to the top of the positive pressure fan.

[0013] The support arm assembly also includes a second support arm, one end of which is rotatably connected to the hanger, and the other end of which is rotatably connected to one end of the top of the positive pressure fan. When the first support arm rotates, the second support arm can push and pull one side of the positive pressure fan to change the blowing angle of the positive pressure fan.

[0014] The first support arm is connected to a drive motor at the rotating connection end with the hanger, and the drive motor drives the first support arm to rotate relative to the hanger.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This device consists of two retractable hangers connected by a telescopic assembly, allowing for length adjustment to accommodate varying diameters in different areas of the mine. Support legs at both ends of the hangers provide stable support. One end of the support arm assembly is rotatably connected to the hanger, while the other end connects to a positive pressure fan. The fan's outlet faces the duct inlet, providing power for dust transport and effectively solving the problem of poor dust removal efficiency in large-diameter areas with traditional mine dust collection equipment. The cooperation between the support arm assembly and the positive pressure fan allows for adjustment of the blowing angle based on the actual dust distribution. In areas with large mine dimensions leading to significant dust leakage far from the duct, the positive pressure fan can be moved to a more distant location via the support arm assembly, directing the dust towards the duct, reducing leakage, improving dust removal efficiency, and ensuring air quality and miner safety within the mine.

[0017] 2. In the complex environment of a mine, top support feet are installed on both the top and bottom surfaces to provide stable support for the hanger from both above and below. The rotatable wheel design allows for flexible adjustment of the contact angle when the device moves or the mine wall is irregular; the elastic telescopic rod connects the hanger to the bearing seat, giving the top support feet a certain degree of flexibility, allowing them to fit closely to the uneven mine wall and enhancing the stability of the device in the mine;

[0018] 3. The convex teeth increase the friction between the wheel and the mine wall, just like the anti-slip treads on a tire. In the complex environment of the mine, such as dampness and dust, the device is prevented from sliding or shifting due to force or vibration, which further improves the overall stability of the device.

[0019] 4. The locking parts can be easily tightened or loosened by rotating the handle. After the length of the hanger is adjusted to the appropriate position, tighten the locking parts so that the threaded end is tightly against the outer wall of the longitudinal rod to fix the sliding sleeve and lock the length of the hanger. This ensures that the length of the hanger will not change due to vibration or other factors during the use of the device, and ensures that the dust removal work is carried out stably.

[0020] 5. The first support arm establishes a rotating connection between the lifting frame and the positive pressure fan, providing a basic structure for adjusting the angle of the positive pressure fan. By rotating the first support arm, the positive pressure fan can change its position and angle within a certain range, allowing it to adjust its blowing direction according to actual needs.

[0021] 6. The second support arm works in conjunction with the first support arm. When the first support arm rotates, the second support arm pushes and pulls on one side of the positive pressure fan, enabling multi-angle and more flexible angle adjustment of the positive pressure fan. This dual support arm design, compared to a single support arm, allows for more precise and stable angle adjustment of the positive pressure fan, thereby blowing dust more efficiently towards the air inlet of the duct.

[0022] 7. The drive motor provides power for the rotation of the first support arm, enabling automated adjustment of the positive pressure fan angle. Compared to manual adjustment, automated adjustment is more convenient and efficient. It can quickly adjust the positive pressure fan angle according to the real-time dust generation in the mine, improving dust removal efficiency and reducing manual operation costs and labor intensity. Attached Figure Description

[0023] Figure 1 is a perspective view of this utility model;

[0024] Figure 2 is another perspective view of this utility model;

[0025] Figure 3 is a perspective view of the hanger of this utility model;

[0026] Figure 4 is a perspective view of the top support leg of this utility model;

[0027] Figure 5 is a cross-sectional view of the elastic telescopic rod of this utility model.

[0028] In the picture:

[0029] 1. Dry dust collector; 2. Duct; 3. Hanger; 4. Telescopic assembly; 41. Cylinder base; 42. Slide rod; 43. Longitudinal rod; 44. Sliding sleeve; 45. Locking element; 46. Diagonal brace arm; 5. Top support foot; 51. Bearing seat; 52. Elastic telescopic rod; 521. Cylinder; 522. Piston rod; 523. Spring; 53. Wheel; 6. Support arm assembly; 61. First support arm; 62. Second support arm; 63. Drive motor; 7. Positive pressure fan. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0031] A dust removal device for underground mines includes a dry dust collector 1, which is placed inside the mine. Its outlet is located at the mine's exhaust port, and its inlet is connected to a duct 2. A hanger 3 is installed on the free end of the duct 2. Top support legs 5 are installed at both ends of the hanger 3 to support the hanger 3 against the mine sidewall. The hanger 3 has two sections, which are connected by a telescopic assembly 4. The two telescopically connected sections of the hanger 3 can be adjusted in length according to the diameter changes in different areas of the mine. The device also includes a support arm assembly 6, one end of which is rotatably connected to the hanger 3, and the other end of which is rotatably connected to a positive pressure fan 7. The outlet of the positive pressure fan 7 corresponds to the inlet of the duct 2. The cooperation between the support arm assembly 6 and the positive pressure fan 7 allows the blowing angle to be adjusted according to the actual distribution of dust. When the mine is large and a lot of dust leaks away from the air duct 2, the positive pressure fan 7 can be moved to a side further away from the air duct 2 by the support arm assembly 6 to blow the dust toward the air duct 2, reduce dust leakage, improve the dust removal rate, and ensure the air quality in the mine and the safety of miners.

[0032] The top and bottom surfaces of both ends of the hanger 3 are equipped with top support feet 5, which can provide stable support for the hanger 3 from both the top and bottom directions. The top support foot 5 includes a bearing seat 51 and a wheel 53. The wheel 53 is rotatably mounted on the bearing seat 51. The side of the bearing seat 51 is connected to an elastic telescopic rod 52. The elastic telescopic rod 52 is fixedly connected to the hanger 3. The wheel 53 is designed to rotate, so that the contact angle can be flexibly adjusted when the device moves or the mine wall is irregular. The elastic telescopic rod 52 connects the hanger 3 and the bearing seat 51, giving the top support foot 5 a certain degree of elasticity, so that it can fit tightly against the uneven mine wall and enhance the stability of the device in the mine.

[0033] The elastic telescopic rod 52 includes a cylinder 521, which is fixedly mounted on the hanger 3. A piston rod 522 is slidably inserted into one side of the cylinder 521. One end of the piston rod 522 located inside the cylinder 521 is supported and connected to a spring 523. The other end of the piston rod 522 is connected to the side of the bearing seat 51. A limit ring is provided on the end of the piston rod 522 located inside the cylinder 521. The outer diameter of the limit ring is larger than the inner diameter at the outlet of the cylinder 521.

[0034] The outer circumference of the wheel 53 is provided with protruding teeth, which increases the friction between the wheel 53 and the mine wall, just like the anti-slip treads on a tire. In the complex environment of the mine, such as dampness and dust, the device is prevented from sliding or shifting due to force or vibration, which further improves the overall stability of the device.

[0035] The telescopic assembly 4 includes two cylindrical seats 41 and a sliding rod 42. The two cylindrical seats 41 are respectively fixedly mounted on the two sections of the hanger 3. The sliding rod 42 is located between the two cylindrical seats 41 and its two ends are slidably connected to the corresponding cylindrical seats 41. A sliding block is sleeved in the middle of the sliding rod 42. A longitudinal rod 43 is vertically connected to the side of the sliding block. A sliding sleeve 44 is slidably mounted on the longitudinal rod 43. The two sides of the sliding sleeve 44 are respectively hinged to the two cylindrical seats 41 with diagonal bracing arms 46.

[0036] The top of the sliding sleeve 44 is threaded with a locking member 45. The threaded end of the locking member 45 passes through the top surface of the sliding sleeve 44 and abuts against the outer wall of the longitudinal rod 43. A handle is provided on the end of the locking member 45 outside the sliding sleeve 44. The locking member 45 can be easily tightened or loosened by rotating the handle. When the length of the hanger 3 is adjusted to a suitable position, the locking member 45 is tightened so that its threaded end abuts tightly against the outer wall of the longitudinal rod 43, fixing the sliding sleeve 44 and locking the length of the hanger 3. This ensures that the length of the hanger 3 will not change due to vibration or other factors during use, and ensures that the dust removal work is carried out stably.

[0037] The support arm assembly 6 includes a first support arm 61, one end of which is rotatably connected to the hanger 3, and the other end of which is rotatably connected to the top of the positive pressure fan 7. The first support arm 61 establishes a rotatable connection between the hanger 3 and the positive pressure fan 7, providing a basic structure for adjusting the angle of the positive pressure fan 7. By rotating the first support arm 61, the positive pressure fan 7 can change its position and angle within a certain range, allowing it to adjust its blowing direction according to actual needs.

[0038] The support arm assembly 6 also includes a second support arm 62. One end of the second support arm 62 is rotatably connected to the hanger 3, and the other end is rotatably connected to one end of the top of the positive pressure fan 7. When the first support arm 61 rotates, the second support arm 62 can push and pull one side of the positive pressure fan 7 to change the blowing angle of the positive pressure fan 7. The second support arm 62 works in conjunction with the first support arm 61. When the first support arm 61 rotates, the second support arm 62 pushes and pulls one side of the positive pressure fan 7 to achieve multi-angle and more flexible angle adjustment of the positive pressure fan 7. This dual support arm design, compared with a single support arm, enables more precise and stable angle adjustment of the positive pressure fan 7, thereby blowing dust more efficiently toward the air inlet of the duct 2.

[0039] A drive motor 63 is connected to the rotating connection end of the first support arm 61 and the hanger 3. The drive motor 63 drives the first support arm 61 to rotate relative to the hanger 3, providing power for the rotation of the first support arm 61 and realizing the automatic adjustment of the angle of the positive pressure fan 7. Compared with manual adjustment, automatic adjustment is more convenient and efficient. It can quickly adjust the angle of the positive pressure fan 7 according to the real-time situation of dust generation in the mine, improve dust removal efficiency, and reduce manual operation costs and labor intensity.

[0040] When using:

[0041] When using the dust removal device for underground mines of this utility model, the length of the hanger 3 is first adjusted by adjusting the telescopic component 4 according to the actual diameter of the mine shaft. Specifically, the locking piece 45 at the top of the sliding sleeve 44 is loosened, allowing the sliding sleeve 44 to move on the longitudinal rod 43, while the diagonal support arm 46 swings accordingly, thus extending and retracting the two sections of the hanger 3. After adjusting to the appropriate length, the locking piece 45 is tightened to fix the position of the sliding sleeve 44.

[0042] Place the free end of the air duct 2, which is equipped with the hanger 3 and the positive pressure fan 7, in a suitable position inside the mine. The top support foot 5 at the end of the hanger 3 uses the elasticity of the elastic telescopic rod 52 to make the wheel 53 fit tightly against the mine wall. The convex teeth on the outer circle of the wheel 53 increase the friction and ensure the stability of the device.

[0043] The drive motor 63 is started, which drives the first support arm 61 to rotate relative to the hanger 3. When the first support arm 61 rotates, it drives the second support arm 62 to push and pull one side of the positive pressure fan 7, thereby adjusting the blowing angle of the positive pressure fan 7 so that the air outlet of the positive pressure fan 7 is aligned with the air inlet of the air duct 2. During mine operations, when a large amount of dust leaks from areas far from the air duct 2 due to the large size of the mine, the positive pressure fan 7 can be moved to a side far away from the air duct 2 via the support arm assembly 6. The generated dust is blown towards the air inlet of the air duct 2 by the positive pressure fan 7, and enters the dry dust collector 1 through the air duct 2 for dust removal. The purified air is discharged from the air outlet of the dry dust collector 1 to the mine's exhaust outlet, thus purifying the air in the mine.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. A dust removal device for underground mines, comprising a dry dust collector (1), wherein the dry dust collector (1) is placed inside the mine, its outlet is located at the mine's exhaust port, and its inlet is connected to an air duct (2), characterized in that: A hanger (3) is installed on the free end of the air duct (2). A top support foot (5) is installed on both ends of the hanger (3). The hanger (3) is provided in two sections, and the two sections of the hanger (3) are connected by a telescopic component (4). It also includes a support arm component (6). One end of the support arm component (6) is rotatably connected to the hanger (3), and the other end of the support arm component (6) is rotatably connected to a positive pressure fan (7). The air outlet of the positive pressure fan (7) corresponds to the air inlet of the air duct (2).

2. The dust removal device for underground mines according to claim 1, characterized in that: The top and bottom surfaces of both ends of the hanger (3) are provided with top support feet (5). The top support feet (5) include bearing seats (51) and wheel bodies (53). The wheel bodies (53) are rotatably mounted on the bearing seats (51). The side of the bearing seats (51) is connected to an elastic telescopic rod (52), which is fixedly connected to the hanger (3).

3. A dust removal device for underground mines according to claim 2, characterized in that: The elastic telescopic rod (52) includes a cylinder (521), which is fixedly mounted on the hanger (3). A piston rod (522) is slidably inserted into one side of the cylinder (521). A spring (523) is connected to one end of the piston rod (522) inside the cylinder (521). The other end of the piston rod (522) is connected to the side of the bearing seat (51). A limit ring is provided on one end of the piston rod (522) inside the cylinder (521). The outer diameter of the limit ring is larger than the inner diameter at the outlet of the cylinder (521).

4. A dust removal device for underground mines according to claim 3, characterized in that: The outer circumference of the wheel body (53) is provided with protruding teeth.

5. A dust removal device for underground mines according to claim 4, characterized in that: The telescopic assembly (4) includes two cylindrical seats (41) and a sliding rod (42). The two cylindrical seats (41) are fixedly mounted on the two sections of the hanger (3). The sliding rod (42) is located between the two cylindrical seats (41) and the two ends of the sliding rod (42) are slidably connected to the corresponding cylindrical seats (41). A sliding block is sleeved in the middle of the sliding rod (42). A longitudinal rod (43) is vertically connected to the side of the sliding block. A sliding sleeve (44) is slidably mounted on the longitudinal rod (43). An inclined support arm (46) is hinged between the two sides of the sliding sleeve (44) and the two cylindrical seats (41).

6. A dust removal device for underground mines according to claim 5, characterized in that: The top of the sliding sleeve (44) is threaded with a locking member (45). The threaded end of the locking member (45) passes through the top surface of the sliding sleeve (44) and abuts against the outer wall of the longitudinal rod (43). A throttle is provided on the end of the locking member (45) located outside the sliding sleeve (44).

7. A dust removal device for underground mines according to claim 6, characterized in that: The support arm assembly (6) includes a first support arm (61), one end of which is rotatably connected to the hanger (3), and the other end of which is rotatably connected to the top of the positive pressure fan (7).

8. A dust removal device for underground mines according to claim 7, characterized in that: The support arm assembly (6) also includes a second support arm (62), one end of which is rotatably connected to the hanger (3), and the other end of which is rotatably connected to one end of the top of the positive pressure fan (7). When the first support arm (61) rotates, the second support arm (62) can push and pull one side of the positive pressure fan (7) to change the blowing angle of the positive pressure fan (7).

9. A dust removal device for underground mines according to claim 8, characterized in that: The first support arm (61) is connected to the rotating connection end of the hanger (3) by a drive motor (63), which drives the first support arm (61) to rotate relative to the hanger (3).

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