Coal mine excavation dust suppression device

Abstract

The invention relates to the technical field of dust suppression devices, in particular to a coal mine excavation dust suppression device which comprises an equipment frame and an air duct assembly, the air duct assembly comprises a head pipeline, a tail pipeline, an air supply pipeline, a driving module and a plurality of spray pipes, the head pipeline is installed on the equipment frame and used for making contact with an acting area, and the driving module is installed on the tail pipeline. The multiple spray pipes are annularly installed at one end of the head pipeline at equal angles. According to the device, through the arrangement of the tail pipeline and the air supply pipeline, when smoke dust in the front end of the roadway is large, airflow is directly blown into the head pipeline through the air supply pipeline, the airflow drives mist to be sprayed out when being exhausted to the front end through the head pipeline, and dust falling of the front end of the roadway is achieved; and smoke dust at the front section of the roadway is sucked and discharged through the head pipeline, dust suppression of the roadway is achieved, when the smoke dust is small, the smoke dust is limited, sucked and discharged through the air duct assembly, and when the smoke dust is large, the smoke dust is sprayed out through the air duct assembly for dust suppression.

Description

Technical Field

[0001] The present invention relates to the technical field of dust suppression devices, and specifically to a dust suppression device for coal mine excavation. Background Art

[0002] During the production in the field of engineering and industrial and mining construction, a large amount of dust will be generated, and a dust suppression device is required to reduce the dust in the air. For example, during coal mining, the daily excavation volume and transportation volume are quite considerable, and the amount of dust generated is also quite astonishing. To solve this problem, a dust suppression device will be installed in the roadway. The existing dust suppression devices are generally divided into spray type and exhaust type. Among them, for the spray type dust suppression device, the nozzle sprays water mist particles, and these dry fog particles are evenly diffused in the air and fully contact with the flying dust particles to achieve the wrapping and descent of the dust, thereby achieving dust suppression. The dust suppression speed is relatively fast, but the humidity generated is relatively large, and a large amount of water accumulation is generated, which is likely to affect the working environment and is suitable for situations with large smoke and dust. While for the exhaust type dust suppression device, it mainly sucks the smoke and dust into the exhaust gas pipeline, which has less impact on the working environment, but its dust removal and suppression speed is slower and is suitable for situations with less smoke and dust. Therefore, a dust suppression device that can be applicable to different degrees of smoke and dust is proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide a dust suppression device for coal mine excavation to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A dust suppression device for coal mine excavation, including an equipment rack and an air duct assembly, and the air duct assembly includes:

[0006] A head pipe, installed on the equipment rack, and the head pipe is used to contact the action area;

[0007] Nozzle pipes, there are multiple nozzle pipes, and multiple nozzle pipes are installed at one end of the head pipe in an annular and equiangular manner, and the opening angle of the nozzle pipes can be adjusted;

[0008] A tail pipe, one end of which is rotatably installed with the other end of the head pipe, and the tail pipe is communicated with the head pipe;

[0009] An air supply pipe, one end of which is rotatably connected with the tail pipe. A fan is installed inside the air supply pipe, and the fan blows air from the other end to one end of the air supply pipe. After the air supply pipe and the tail pipe are respectively rotated by 180 degrees, the air supply pipe can be parallel to the head pipe, and the air supply pipe is communicated with the tail pipe;

[0010] A drive module, installed at the other end of the head pipe, and the drive module is used to drive the tail pipe to rotate.

[0011] Furthermore, on the outer side wall of the other end of the head pipe, a first annular neck part is fixedly connected; on the outer side wall of one end of the tail pipe, a second annular neck part is fixedly connected; an annular seat is arranged between the tail pipe and the head pipe, and the annular seat is used for rotatably connecting with the first annular neck part and the second annular neck part.

[0012] Furthermore, a docking part is arranged on the outer side wall of the tail pipe; one end of the air supply pipe is fixedly connected with an embedding seat, and the embedding seat is rotatably connected with the docking part; on both sides of the outer side wall of the docking part, first pin seats are fixedly connected; on the outer side wall of the embedding seat, a second pin seat is fixedly connected, and the second pin seat and the first pin seat can be fixed through a pin rod.

[0013] Furthermore, the driving module includes a driving motor and an arc tooth rack; on the output end of the driving motor, a gear is fixedly connected; the arc tooth rack is fixedly connected with the second annular neck part; the gear meshes with the arc tooth rack; the driving motor is fixedly installed on the head pipe.

[0014] Furthermore, on both sides of the outer side wall of the other end of the head pipe, first clamping seats are fixedly installed; on the outer side wall of one end of the tail pipe, a second clamping seat is fixedly connected, and the second clamping seat can be clamped and fixed with the first clamping seats.

[0015] Furthermore, on the outer side wall of one end of the head pipe, a ring frame is fixedly sleeved; one end of the spray pipe is rotatably connected with the ring frame; on the outer side wall of the other end of the spray pipe, a first extension frame is fixedly connected; on the outer side wall of one end of the head pipe, a ring pipe is slidably sleeved; the spray pipe and the ring pipe are communicated through a hose; one end of the first extension frame and the ring pipe are rotatably connected with a first push rod.

[0016] Furthermore, on the end face of one end of the head pipe, a plurality of flow guiding plates are rotatably connected; the plurality of flow guiding plates are annularly arranged at equal angles, and the plurality of spray pipes and the plurality of flow guiding plates are staggered with each other; on the outer side wall of the flow guiding plate, a second extension frame is fixedly connected; one end of the second extension frame and the ring pipe are rotatably connected with a second push rod; a lapping part is arranged at one side position of one end of the flow guiding plate.

[0017] Furthermore, the radius of the second extension frame is greater than the radius of the first extension frame; a plurality of linear motors are installed on the outer side wall of the head pipe; the output end of the linear motor is connected with the ring pipe, and the linear motor is used for driving the ring pipe to move; an outer protective cover is fixedly connected to the outer side wall of the head pipe, and the outer protective cover is used for protecting the ring pipe and the plurality of spray pipes.

[0018] Furthermore, a plurality of brackets are installed on the top surface of the equipment frame, and the brackets are fixedly installed with the head pipe; a lifting module is installed at the top end of the equipment frame, and the lifting module can support the tail pipe and the air supply pipe.

[0019] Furthermore, the lifting module includes a lead screw and two first support rods. One end of each first support rod is rotatably installed at the top of the equipment rack. The two first support rods are respectively arranged on both sides of the top of the equipment rack. The other end of each first support rod is rotatably connected to a second support rod, and a support wheel is rotatably connected between the first support rod and the second support rod. One end of the two second support rods is rotatably connected to a cross frame. The lead screw is rotatably connected to the equipment rack, and one end of the lead screw is in screw connection with the cross frame.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 2. Through the arrangement of the tail pipe and the air supply pipe, the air flow enters from the air supply pipe and is discharged from the rear end of the tail pipe, so that the front end of the head pipe sucks in air and is discharged from the rear end of the tail pipe, realizing the suction of the air in the area at the front end of the air duct assembly and discharging it through the pipe connected to the rear end of the tail pipe. At the same time, multiple nozzles are in an open state, and fog is sprayed out in all directions through the multiple nozzles, so as to form a fog wall between the head pipe and the inner wall of the roadway for sealing. When the smoke and dust spreads backward through the fog wall, the fog wall is used to reduce the dust of the smoke and dust, so as to realize "blocking" the smoke and dust at the front end of the roadway and achieve the dust suppression of the roadway.

[0022] 3. Through the arrangement of the air supply pipe and the nozzles, when the smoke and dust in the front end of the roadway is large, first rotate the air supply pipe by half a circle, and then rotate the tail pipe by half a circle, so that the air supply pipe directly blows air into the head pipe. At the same time, operate multiple nozzles to deflect to the state of closing in the middle, so that the air flow drives the fog to be sprayed out when discharging forward through the head pipe, realizing the dust reduction of the front end of the roadway, and sucking and discharging the smoke and dust at the front end of the roadway through the head pipe, realizing the dust suppression of the roadway. When the smoke and dust is small, the air duct assembly restricts and sucks and discharges the smoke and dust. When the smoke and dust is large, the air duct assembly sprays aerosol to suppress the smoke and dust. Description of the Drawings

[0023] Figure 1 is the overall structure schematic diagram of the present invention;

[0024] Figure 2 is the structure schematic diagram of the air duct assembly in the present invention;

[0025] Figure 3 is the intermediate state structure schematic diagram of the air duct assembly in the present invention;

[0026] Figure 4 is the air blowing state structure schematic diagram of the air duct assembly in the present invention;

[0027] Figure 5 is the structure schematic diagram of the nozzle and the guide plate in the present invention;

[0028] Figure 6It is a schematic structural diagram of the nozzle in the closed state of the present invention;

[0029] Figure 7 It is a schematic structural diagram of the drive module in the present invention;

[0030] Figure 8 It is a schematic structural diagram of the tail pipe in the present invention.

[0031] In the figure: 100, equipment rack; 110, bracket; 120, lifting module; 121, first support rod; 122, second support rod; 123, lead screw; 200, air duct assembly; 210, head pipe; 211, first annular neck; 212, outer protective cover; 213, annular seat; 214, first clamping seat; 220, tail pipe; 221, second annular neck; 222, docking part; 223, first pin seat; 224, second clamping seat; 230, air supply pipe; 231, embedding seat; 232, second pin seat; 240, drive module; 241, arc tooth rack; 242, drive motor; 243, gear; 250, nozzle; 251, first extension frame; 252, first push rod; 260, guide vane; 261, second extension frame; 262, second push rod; 263, overlapping part; 270, linear motor; 271, annular pipe; 280, annular frame. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 to 7, in the embodiment of the present invention, a dust suppression device for coal mine excavation includes an equipment frame 100 and an air duct assembly 200. The air duct assembly 200 includes a head pipe 210, a tail pipe 220, a supply air pipe 230, a drive module 240 and a spray pipe 250. The head pipe 210 is installed on the equipment frame 100 and is used to contact the working area. There are multiple spray pipes 250, and the multiple spray pipes 250 are installed at equal angles in a circular shape at one end of the head pipe 210. The opening angle of the spray pipe 250 can be adjusted. One end of the tail pipe 220 is rotatably installed with the other end of the head pipe 210, and the tail pipe 220 is communicated with the head pipe 210. One end of the supply air pipe 230 is rotatably connected with the tail pipe 220. A fan is installed inside the supply air pipe 230, and the fan blows air from the other end of the supply air pipe 230 to one end. After the supply air pipe 230 and the tail pipe 220 are respectively rotated 180 degrees, the supply air pipe 230 can be parallel to the head pipe 210. The supply air pipe 230 is communicated with the tail pipe 220. The drive module 240 is installed at the other end position of the head pipe 210, and the drive module 240 is used to drive the tail pipe 220 to rotate.

[0034] Specifically, initially, the exhaust gas pipe is docked with the rear end of the tail pipe 220, and the supply air pipe 230 blows air into the tail pipe 220. Since there is an obtuse angle between the supply air pipe 230 and the tail pipe 220, the air flow enters from the supply air pipe 230 and is discharged from the rear end of the tail pipe 220, so that the front end of the head pipe 210 inhales air and is discharged from the rear end of the tail pipe 220, realizing the suction of the air in the area in front of the air duct assembly 200 and discharging it through the pipe connected to the rear end of the tail pipe 220. At the same time, the multiple spray pipes 250 are in an open state, and fog is sprayed out in all directions through the multiple spray pipes 250, so as to form a fog wall between the head pipe 210 and the inner wall of the roadway for sealing. When the dust spreads backward through the fog wall, the dust is dusted by the fog wall, so as to "seal" the dust in the front end of the roadway, and the dust in the front section of the roadway is sucked and discharged through the head pipe 210, realizing the dust suppression of the roadway. When the dust in the front end of the roadway is large, first rotate the supply air pipe 230 half a turn, and then rotate the tail pipe 220 half a turn (as shown in the attached Figure 4 figure), so that the supply air pipe 230 blows air directly into the head pipe 210. At the same time, operate the multiple spray pipes 250 to deflect to the state of closing in the middle, so that the air flow drives the fog to be ejected when it is discharged forward through the head pipe 210, realizing the dust suppression of the front end of the roadway.

[0035] Embodiment 1

[0036] As Figures 4 to 8As shown, in this embodiment, a first annular neck portion 211 is fixedly connected to the outer side wall of the other end of the head pipe 210, a second annular neck portion 221 is fixedly connected to the outer side wall of one end of the tail pipe 220, an annular seat 213 is arranged between the tail pipe 220 and the head pipe 210, and the annular seat 213 is used for rotatably connecting with the first annular neck portion 211 and the second annular neck portion 221. A docking portion 222 is arranged on the outer side wall of the tail pipe 220, an embedding seat 231 is fixedly connected to one end of the air supply pipe 230, and the embedding seat 231 is rotatably connected with the docking portion 222. A first pin seat 223 is fixedly connected to both sides of the outer side wall of the docking portion 222, a second pin seat 232 is fixedly connected to the outer side wall of the embedding seat 231, and the second pin seat 232 and the first pin seat 223 can be fixed by a pin rod. The driving module 240 includes a driving motor 242 and an arc tooth rack 241. A gear 243 is fixedly connected to the output end of the driving motor 242. The arc tooth rack 241 is fixedly connected to the second annular neck portion 221, and the gear 243 meshes with the arc tooth rack 241. The driving motor 242 is fixedly installed on the head pipe 210. A first clamping seat 214 is fixedly installed on both sides of the outer side wall of the other end of the head pipe 210, a second clamping seat 224 is fixedly connected to the outer side wall of one end of the tail pipe 220, and the second clamping seat 224 can be clamped and fixed with the first clamping seat 214.

[0037] In this embodiment, the driving motor 242 drives the arc tooth rack 241 through the gear 243, thereby driving the tail pipe 220 to rotate, realizing driving the tail pipe 220 to rotate half a circle. Through the arrangement of the first clamping seat 214 and the second clamping seat 224, before the tail pipe 220 rotates, the first clamping seat 214 and the second clamping seat 224 are disengaged from the clamping. After the tail pipe 220 rotates in place, the first clamping seat 214 and the second clamping seat 224 are clamped and fixed, realizing the fixation of the angle between the head pipe 210 and the tail pipe 220. Manually rotate the air supply pipe 230, and through the clamping between the first pin seat 223 and the second pin seat 232, the fixation between the tail pipe 220 and the air supply pipe 230 is realized.

[0038] Embodiment 2

[0039] As Figures 5 to 8As shown, in this embodiment, a ring frame 280 is fixedly sleeved on the outer side wall of one end of the head pipe 210. One end of the nozzle pipe 250 is rotatably connected to the ring frame 280. An extension frame one 251 is fixedly connected to the outer side wall of the other end of the nozzle pipe 250. A ring pipe 271 is slidably sleeved on the outer side wall of one end of the head pipe 210. The nozzle pipe 250 and the ring pipe 271 are connected through a hose. A push rod one 252 is rotatably connected between one end of the extension frame one 251 and the ring pipe 271. A plurality of flow guiding plates 260 are rotatably connected to the end face of one end of the head pipe 210. The plurality of flow guiding plates 260 are arranged at equal angles in a ring shape, and the plurality of nozzle pipes 250 and the plurality of flow guiding plates 260 are staggered from each other. An extension frame two 261 is fixedly connected to the outer side wall of the flow guiding plate 260. A push rod two 262 is rotatably connected between one end of the extension frame two 261 and the ring pipe 271. A lapping portion 263 is arranged at one side position of one end of the flow guiding plate 260. The radius of the extension frame two 261 is greater than the radius of the extension frame one 251. A plurality of linear motors 270 are installed on the outer side wall of the head pipe 210. The output end of the linear motor 270 is connected to the ring pipe 271. The linear motor 270 is used to drive the ring pipe 271 to move. An outer protective cover 212 is fixedly connected to the outer side wall of the head pipe 210. The outer protective cover 212 is used to protect the ring pipe 271 and the plurality of nozzle pipes 250.

[0040] During specific implementation, when the head pipe 210 sucks the airflow at the front end, the linear motor 270 drives the ring pipe 271 to move backward, so as to drive the nozzle pipe 250 to deflect outward through the push rod one 252. When the head pipe 210 blows air to the front end, the ring pipe 271 moves forward, so that the nozzle of the nozzle pipe 250 penetrates into the airflow ejected from the head pipe 210. Through the arrangement of the flow guiding plates 260, when the ring pipe 271 moves forward, it drives the plurality of flow guiding plates 260 to close, so that the plurality of flow guiding plates 260 are combined into a ring shape, thereby guiding the airflow ejected from the head pipe 210, facilitating the airflow to carry the mist and eject. When the nozzle pipe 250 ejects outward, the ring pipe 271 drives the flow guiding plates 260 to open, so that the ring pipe 271 shields the gap between the plurality of nozzle pipes 250, reducing the leakage of smoke and dust from the gap between the flow guiding plates 260.

[0041] Such as Figure 1As shown, in this embodiment, a plurality of brackets 110 are installed on the top surface of the equipment rack 100. The brackets 110 are fixedly installed between the head pipes 210. A lifting module 120 is installed at the top end of the equipment rack 100. The lifting module 120 can support the tail pipe 220 and the air supply pipe 230. The lifting module 120 includes a lead screw 123 and two first support rods 121. One end of the first support rod 121 is rotatably installed at the top end position of the equipment rack 100. The two first support rods 121 are respectively arranged on both sides of the top end of the equipment rack 100. The other end of the first support rod 121 is rotatably connected to a second support rod 122. And a support wheel is rotatably connected between the first support rod 121 and the second support rod 122. One ends of the two second support rods 122 are rotatably connected to a cross frame. The lead screw 123 is rotatably connected to the equipment rack 100. One end of the lead screw 123 is screwed to the cross frame.

[0042] During specific implementation, the lead screw 123 is rotated to adjust the height of the support wheel. Thus, when the tail pipe 220 or the air supply pipe 230 is parallel to the head pipe 210, the tail pipe 220 or the air supply pipe 230 is supported by the support wheel, reducing the load on the connection part between the tail pipe 220 and the head pipe 210.

[0043] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0044] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole. 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. A dust suppression device for coal mine excavation, characterized in that: The invention comprises an equipment rack (100) and an air duct assembly (200), wherein the air duct assembly (200) comprises: A head pipe (210) is installed on the equipment frame (100), and the head pipe (210) is used to contact the action area; There are multiple nozzles (250), and the multiple nozzles (250) are installed at one end of the head pipe (210) in a ring shape at equal angles. The opening angle of the nozzles (250) can be adjusted; One end of the tail pipe (220) is rotatably mounted to the other end of the head pipe (210), and the tail pipe (220) is communicated with the head pipe (210); An air supply duct (230) is rotatably connected at one end to the tail duct (220); a fan is installed inside the air supply duct (230); the fan blows air from the other end of the air supply duct (230) to one end; after the air supply duct (230) and the tail duct (220) are respectively rotated 180 degrees, the air supply duct (230) can be parallel to the head duct (210); and the air supply duct (230) and the tail duct (220) are connected; A driving module (240) is installed at the other end of the head pipe (210), and the driving module (240) is used to drive the tail pipe (220) to rotate.

2. A coal mine excavation dust suppression device according to claim 1, characterized in that: The outer wall at the other end of the head pipe (210) is fixedly connected with a first ring neck portion (211), and the outer wall at one end of the tail pipe (220) is fixedly connected with a second ring neck portion (221). An annular seat (213) is provided between the tail pipe (220) and the head pipe (210), and the annular seat (213) is used for rotationally connecting with the first ring neck portion (211) and the second ring neck portion (221).

3. A coal mine excavation dust suppression device according to claim 2, characterized in that: The outer wall of the tail pipe (220) is provided with a docking portion (222); one end of the air supply pipe (230) is fixedly connected with an embedding seat (231); the embedding seat (231) and the docking portion (222) are rotatably connected; both sides of the outer wall of the docking portion (222) are fixedly connected with a pin seat 1 (223); the outer wall of the embedding seat (231) is fixedly connected with a pin seat 2 (232); the pin seat 2 (232) and the pin seat 1 (223) can be fixed by a pin rod.

4. A coal mine excavation dust suppression device according to claim 2, characterized in that: The driving module (240) comprises a driving motor (242) and an arc gear rack (241); the output end of the driving motor (242) is fixedly connected with a gear (243); the arc gear rack (241) is fixedly connected to the second ring neck portion (221); the gear (243) is meshed with the arc gear rack (241); and the driving motor (242) is fixedly mounted on the head pipe (210).

5. A coal mine excavation dust suppression device according to claim 2, characterized in that: A first clamping seat (214) is fixedly installed on both sides of the outer wall of the other end of the head pipe (210), and a second clamping seat (224) is fixedly connected to the outer wall of one end of the tail pipe (220), and the second clamping seat (224) can be clamped and fixed between the first clamping seat (214).

6. A coal mine excavation dust suppression device according to any one of claims 1 to 5, characterized in that: A ring frame (280) is fixedly sleeved on the outer wall of one end of the head pipe (210), one end of the nozzle pipe (250) is rotatably connected to the ring frame (280), an extension frame (251) is fixedly connected to the outer wall of the other end of the nozzle pipe (250), an annular tube (271) is slidably sleeved on the outer wall of one end of the head pipe (210), the nozzle pipe (250) and the annular tube (271) are connected via a hose, and a push rod (252) is rotatably connected between one end of the extension frame (251) and the annular tube (271).

7. A coal mine excavation dust suppression device according to claim 6, characterized in that: One end face of the head pipe (210) is rotatably connected to a plurality of guide plates (260), the plurality of guide plates (260) are arranged at equal angles in a ring, and the plurality of nozzles (250) and the plurality of guide plates (260) are staggered with each other, an outer wall of the guide plate (260) is fixedly connected to an extension frame 2 (261), one end of the extension frame 2 (261) is rotatably connected to a ring pipe (271) with a push rod 2 (262), and a lap joint (263) is arranged at one side of one end of the guide plate (260).

8. A coal mine excavation dust suppression device according to claim 7, characterized in that: The radius of the second extension frame (261) is greater than the radius of the first extension frame (251); a plurality of linear motors (270) are installed on the outer wall of the head pipe (210); the output end of the linear motor (270) is connected to the annular pipe (271); the linear motor (270) is used to drive the annular pipe (271) to move; an outer protective cover (212) is fixedly connected to the outer wall of the head pipe (210); the outer protective cover (212) is used to protect the annular pipe (271) and the plurality of nozzles (250).

9. A coal mine excavation dust suppression device according to claim 1, characterized in that: A plurality of brackets (110) are installed on the top surface of the equipment rack (100), and the brackets (110) are fixedly installed with the head duct (210). A lifting module (120) is installed on the top of the equipment rack (100), and the lifting module (120) can support the tail duct (220) and the air supply duct (230).

10. A coal mine excavation dust suppression device according to claim 9, characterized in that: The lifting module (120) comprises a screw rod (123) and two support rods (121); one end of the support rod (121) is rotatably mounted at the top position of the equipment frame (100); the two support rods (121) are respectively arranged on both sides of the top of the equipment frame (100); the other end of the support rod (121) is rotatably connected to the support rod (122); a support wheel is rotatably connected between the support rod (121) and the support rod (122); one end of the two support rods (122) is rotatably connected to a cross frame; the screw rod (123) is rotatably connected to the equipment frame (100); and one end of the screw rod (123) is screwed to the cross frame.

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