A dust removal device for environmental protection in underground coal mine roadways

Abstract

This utility model relates to the field of roadway environmental protection technology, specifically a dust removal device for underground coal mine roadways. It includes a mounting base, a rotating drive mechanism on the mounting base, a rotating mechanism fixed to the drive mechanism, and a crossbar fixed between the two rotating mechanisms. A dust removal mechanism is connected to the crossbar, which includes an inlet pipe and a drain pipe. The drain pipe is connected to the crossbar, and the inlet pipe is fixed to the end of the drain pipe. Several nozzles are equidistantly fixed at the bottom of the crossbar. A fixing ring is installed near the nozzles on the crossbar, and a protective sleeve is threaded onto the fixing ring. A dustproof net is installed on the protective sleeve, and the dustproof net is connected to the nozzles. The inlet pipe, drain pipe, and crossbar form a stable passage, uniformly conveying the medium to the equidistant nozzles. The protective sleeve is threaded to the fixing ring, facilitating cleaning of the dustproof net and replacement of the nozzles. The protective sleeve and dustproof net block coal slag and other impurities, preventing nozzle clogging.

Description

Technical Field

[0001] This utility model relates to a dust removal device, specifically a dust removal device for environmental protection in underground coal mine roadways, belonging to the field of roadway environmental protection technology. Background Technology

[0002] Dust control has always been a key challenge for safe production and environmental protection in underground coal mine operations. Coal mine dust is characterized by high concentration, small particle size, and high free silica content. This not only seriously threatens miners' health—long-term inhalation of such dust can easily lead to pneumoconiosis—but also poses an explosion hazard and can easily cause safety accidents. Simultaneously, high dust concentrations can obstruct operators' vision, greatly increasing safety risks; and can cause short circuits in electrical components, wear and tear on mechanical parts, and reduce the reliability of underground equipment. The core of tunnel spray dust suppression is to achieve dust capture, agglomeration, and sedimentation through the physical interaction between the atomizing medium and dust particles, ultimately reducing the dust concentration within the tunnel.

[0003] However, due to the presence of large particles such as coal slag and gravel in the underground working environment, these impurities can easily enter the internal flow channels of the nozzle with the airflow, clogging the atomization holes. During the cleaning process, operators need to disassemble the nozzle and unclog the flow channels, which can easily affect the continuity of dust removal. Utility Model Content

[0004] The purpose of this utility model is to provide a dust removal device for environmental protection in underground coal mine roadways in order to solve the above-mentioned problems. The water inlet pipe, the drain pipe, and the crossbar form a stable passage to uniformly transport the medium to the equidistant nozzles. The protective sleeve is threadedly connected to the fixing ring, which facilitates cleaning the dust screen and replacing the nozzles. The protective sleeve is equipped with a dust screen to block impurities such as coal slag and prevent the nozzles from clogging.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a dust removal device for environmental protection in underground coal mine roadways, comprising a mounting base, a rotating drive mechanism on the mounting base, a rotating mechanism fixed on the drive mechanism, a crossbar fixed between two rotating mechanisms, a dust removal mechanism connected to the crossbar, the dust removal mechanism including a water inlet pipe and a drain pipe, the drain pipe connected to the crossbar, a water inlet pipe fixed to the end of the drain pipe, a plurality of nozzles fixedly installed at equal intervals at the bottom end of the crossbar, a fixing ring installed on the crossbar near the nozzles, a protective sleeve threaded onto the fixing ring, a dustproof net installed on the protective sleeve, and the dustproof net communicating with the nozzles.

[0006] Preferably, both the inlet pipe and the outlet pipe are located at the top of the crossbar, and the nozzle is connected to the interior of the crossbar.

[0007] Preferably, the diameter of the fixing ring is larger than the diameter of the nozzle, and the bottom end of the protective sleeve is provided with a frustum-shaped structure.

[0008] Preferably, the rotating mechanism includes a rotating rod and locking rods, the rotating rod is rotatably mounted on the mounting base, and two locking rods are fixedly connected to the rotating rod.

[0009] Preferably, the rotating mechanism further includes a bracket, and both ends of the crossbar are fixedly connected to the bracket. The bracket is arranged in an L-shape and is engaged with the rotating rod.

[0010] Preferably, a bracket is mounted on the clamping rod, and the clamping rod is fixed to the bracket by bolts.

[0011] Preferably, a fixing frame is fixedly connected to the bottom end of the mounting base, and the mounting base is located at one end of the fixing frame near the crossbar.

[0012] Preferably, the driving mechanism includes a support base and a hydraulic rod. The support base is fixed to one end of the fixed frame away from the mounting base. The hydraulic rod is rotatably mounted on the support base. A push rod is fixedly connected to the telescopic end of the hydraulic rod. A connecting rod is rotatably mounted on the push rod.

[0013] Preferably, the rotating mechanism further includes a rotating shaft, which is rotatably connected within the mounting base, and the rotating shaft is fixedly connected to the connecting rod.

[0014] Preferably, the rotating shaft passes through the inner wall of the mounting base, and the rotating shaft is fixedly connected to the rotating rod.

[0015] The beneficial effects of this utility model are as follows: the crossbar has a hollow structure, which can simultaneously deliver media to multiple nozzles, and the water inlet pipe and outlet pipe are located at the top of the crossbar, avoiding dust accumulation and blockage of the media passage underground, and ensuring smooth media delivery; several nozzles are evenly distributed at the bottom of the crossbar, which can achieve uniform spraying along the length of the tunnel, avoiding dust removal dead zones where some areas are densely sprayed and others are not, and ensuring that the dust concentration in the tunnel is reduced uniformly; the nozzles have good atomization effect, and the fine water mist sprayed can fully contact the dust particles in the air, efficiently capturing dust through the process of adsorption, coagulation, and sedimentation; the dustproof net can block large particles of impurities underground, such as coal slag and gravel, from entering the nozzles, avoiding nozzle blockage and reducing the frequency of nozzle cleaning and maintenance; the protective sleeve is threadedly connected to the fixing ring, which can be quickly disassembled, facilitating regular cleaning of the dustproof net or replacement of the nozzles; the bottom of the protective sleeve is truncated cone-shaped, which can guide the spray to diffuse outward, expand the coverage of a single nozzle, and further improve dust removal efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the fixing frame and the mounting base of this utility model; Figure 3 for Figure 2 The diagram shown is an enlarged view of the structure of part A. Figure 4 This is a schematic diagram of the connection structure between the push rod and the connecting rod of this utility model. Figure 5 This is a schematic diagram of the connection structure between the pipe and the crossbar of this utility model; Figure 6 for Figure 5 The diagram shows an enlarged view of section B.

[0017] In the diagram: 1. Fixed frame; 2. Drive mechanism; 201. Support base; 202. Hydraulic rod; 203. Push rod; 204. Connecting rod; 205. Rotating shaft; 3. Mounting base; 4. Rotating mechanism; 401. Rotating rod; 402. Locking rod; 403. Bracket; 5. Dust removal mechanism; 501. Water inlet pipe; 502. Pipeline; 503. Protective sleeve; 504. Dustproof net; 505. Fixing ring; 506. Nozzle; 6. Crossbar. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-6 As shown, a dust removal device for environmental protection in underground coal mine roadways includes a mounting base 3, a rotating drive mechanism 2 on the mounting base 3, a rotating mechanism 4 fixed on the drive mechanism 2, a crossbar 6 fixed between the two rotating mechanisms 4, and a dust removal mechanism 5 connected to the crossbar 6. The dust removal mechanism 5 includes a water inlet pipe 501 and a discharge pipe 502. The discharge pipe 502 is connected to the crossbar 6, and the water inlet pipe 501 is fixed to the end of the discharge pipe 502. Several nozzles 506 are fixedly installed at equal intervals at the bottom end of the crossbar 6. Water enters the discharge pipe 502 through the water inlet pipe 501, then flows into the hollow crossbar 6, and is finally atomized and sprayed out through the equally spaced nozzles 506. Water mist comes into contact with and adsorbs dust particles in the tunnel; a fixing ring 505 is installed on the crossbar 6 near the nozzle 506, and a protective sleeve 503 is threaded onto the fixing ring 505. A dustproof net 504 is installed on the protective sleeve 503, and the dustproof net 504 is connected to the nozzle 506. The water inlet pipe 501 and the drain pipe 502 are both located at the top of the crossbar 6. The nozzle 506 is connected to the inside of the crossbar 6. The diameter of the fixing ring 505 is larger than the diameter of the nozzle 506. The bottom end of the protective sleeve 503 is set in a frustum shape. The protective sleeve 503 is rotated to remove it, and the coal slag and dust accumulated on the dustproof net 504 are cleaned, or the clogged nozzle 506 is replaced.

[0020] As a technical optimization of this utility model, the rotating mechanism 4 includes a rotating rod 401 and a locking rod 402. The rotating rod 401 is rotatably mounted on the mounting base 3. Two locking rods 402 are fixedly connected to the rotating rod 401. Both ends of the crossbar 6 are fixedly connected to brackets 403. The brackets 403 are arranged in an L-shape and are engaged with the rotating rod 401. The rotating shaft 205 is fixed to the side wall of the rotating rod 401. The rotating shaft 205 can drive the rotating rod 401 and the crossbar 6 to tilt upwards, so that the nozzle 506 is aligned with the top of the tunnel. The locking rods 402 hold the brackets 403 and are fixed to the brackets 403 by bolts.

[0021] As a technical optimization of this utility model, the bottom end of the mounting base 3 is fixedly connected to the fixing frame 1. The mounting base 3 is located at the end of the fixing frame 1 near the crossbar 6. The fixing frame 1 is stably installed on the side wall of the underground roadway of the coal mine by means of expansion bolts or welding to ensure that the fixing frame 1 is not tilted or shaken.

[0022] As a technical optimization of this utility model, the drive mechanism 2 includes a support base 201 and a hydraulic rod 202. The support base 201 is fixed at one end of the fixed frame 1 away from the mounting base 3. The hydraulic rod 202 is rotatably mounted on the support base 201. A push rod 203 is fixedly connected to the telescopic end of the hydraulic rod 202. A connecting rod 204 is rotatably mounted on the push rod 203. A rotating shaft 205 is rotatably connected inside the mounting base 3. The rotating shaft 205 is fixedly connected to the connecting rod 204. The rotating shaft 205 passes through the inner wall of the mounting base 3 and is fixedly connected to the rotating rod 401. The telescopic amount of the hydraulic rod 202 is adjusted by the hydraulic control system. When the hydraulic rod 202 extends, its telescopic end can push the push rod 203 to move. The connecting rod 204 is rotatably mounted on the push rod 203. The push rod 203 drives the connecting rod 204 to pull the rotating shaft 205 to rotate.

[0023] In use, this utility model is first installed securely on the side wall of the underground coal mine roadway using expansion bolts or welding, ensuring that the fixing frame 1 is not tilted or wobbled. Next, the end of the water inlet pipe 501 is connected to the underground water supply system, and the water supply valve is opened. Then, based on the dust distribution in the roadway, the extension and retraction of the hydraulic rod 202 is adjusted through the hydraulic control system. When the hydraulic rod 202 extends, its extension end can push the push rod 203 to move. The push rod 203 is rotatably mounted with... Connecting rod 204 and push rod 203 drive connecting rod 204 to pull rotating shaft 205 to rotate. Rotating shaft 205 is fixed to the side wall of rotating rod 401. Rotating shaft 205 can drive rotating rod 401 and crossbar 6 to tilt upwards, so that nozzle 506 is aligned with the top of the roadway. When hydraulic rod 202 shortens, crossbar 6 rotates downwards, and nozzle 506 can turn to the ground or be horizontally aligned with the middle of the roadway until the optimal angle for covering the dust area is adjusted. Open the valve of the underground water supply system, and water enters the drain through water inlet pipe 501. Inside pipe 502, the water is then diverted to the hollow crossbar 6, and finally atomized and sprayed out through evenly distributed nozzles 506. The atomized water mist contacts and adsorbs dust particles in the tunnel, forming larger particles that then settle, thus achieving dust removal. During operation, the water supply pressure can be adjusted according to changes in dust concentration: increase the pressure when the dust concentration is high to improve the spray range and atomization effect; decrease the pressure when the concentration is low to save water resources. Personnel are arranged to conduct regular inspections to observe the spray status of nozzles 506. If uneven spraying is found... If there is no spray, close the water supply valve, manually rotate the protective sleeve 503 to remove it, clean the accumulated coal slag and dust on the dust screen 504, or replace the clogged nozzle 506; after the dust removal operation is completed, first close the underground water supply system valve, and after the nozzle 506 stops spraying, control the hydraulic rod 202 to adjust the crossbar 6 to a horizontal or upward tilted storage position to avoid interference between the crossbar 6 and the transportation equipment and personnel passage in the roadway; then close the hydraulic control system of the hydraulic rod 202 to cut off the power supply.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An environmental protection dust removal device for underground mine roadway, comprising a mounting seat (3), characterized in that: The rotating driving mechanism (2) is arranged on the mounting base (3), the rotating mechanism (4) is fixedly arranged on the driving mechanism (2), the cross rod (6) is fixedly arranged between the two rotating mechanisms (4), the dust removal mechanism (5) is communicated with the cross rod (6), the dust removal mechanism (5) comprises the water inlet pipe (501) and the discharge pipe (502), the discharge pipe (502) is communicated with the cross rod (6), the end of the discharge pipe (502) is fixedly connected with the water inlet pipe (501), a plurality of spray heads (506) are equidistantly fixedly arranged at the bottom end of the cross rod (6), the fixed ring (505) is arranged at the position of the cross rod (6) close to the spray head (506), the protective sleeve (503) is threadedly connected with the fixed ring (505), the dustproof net (504) is arranged on the protective sleeve (503), and the dustproof net (504) is communicated with the spray head (506).

2. The dust removal device for environmental protection of underground mine roadway according to claim 1, characterized in that: The water inlet pipe (501) and the discharge pipe (502) are arranged at the top of the cross rod (6), and the spray head (506) is communicated with the inside of the cross rod (6).

3. The dust removal device for environmental protection of underground mine roadway according to claim 1, characterized in that: The diameter of the fixed ring (505) is greater than that of the spray head (506), and the bottom end of the protective sleeve (503) is in a circular truncated cone structure.

4. The dust removal device for environmental protection of underground mine roadway according to claim 1, characterized in that: The rotating mechanism (4) comprises the rotating rod (401) and the clamping rod (402), the rotating rod (401) is rotatably arranged on the mounting base (3), and the two clamping rods (402) are fixedly connected with the rotating rod (401).

5. The dust removal device for environmental protection of underground mine roadway according to claim 4, characterized in that: The rotating mechanism (4) further comprises the bracket (403), the two ends of the cross rod (6) are fixedly connected with the brackets (403), the bracket (403) is in an L-shaped structure, and the bracket (403) is clampedly connected with the rotating rod (401).

6. The dust removal device for environmental protection of underground mine roadway according to claim 4, characterized in that: The bracket (403) is clamped on the clamping rod (402), and the clamping rod (402) is fixed with the bracket (403) through bolts.

7. The dust removal device for environmental protection of underground mine roadway according to claim 1, characterized in that: The bottom end of the mounting base (3) is fixedly connected with the fixed frame (1), and the mounting base (3) is located at one end of the fixed frame (1) close to the cross rod (6).

8. The dust removal device for environmental protection of underground mine roadway according to claim 7, characterized in that: The driving mechanism (2) comprises the support seat (201) and the hydraulic rod (202), one end of the fixed frame (1) away from the mounting base (3) is fixedly connected with the support seat (201), the hydraulic rod (202) is rotatably arranged on the support seat (201), the telescopic end of the hydraulic rod (202) is fixedly connected with the push rod (203), and the push rod (203) is rotatably arranged with the connecting rod (204).

9. The dust removal device for environmental protection of coal mine underground roadway according to claim 8, characterized in that: The rotating mechanism (4) further comprises the rotating shaft (205), the rotating shaft (205) is rotatably arranged in the mounting base (3), and the rotating shaft (205) is fixedly connected with the connecting rod (204).

10. The dust removal device for environmental protection of underground mine roadway according to claim 9, characterized in that: The rotating shaft (205) penetrates the inner wall of the mounting base (3), and the rotating shaft (205) is fixedly connected with the rotating rod (401).

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