A dust suppression device for coal mine excavation

Abstract

The present invention relates to the technical field of dust suppression devices, and specifically to a coal mine excavation dust suppression device, comprising an equipment frame and an air duct assembly, wherein the air duct assembly comprises a head pipe, a tail pipe, an air supply pipe, a drive module and a nozzle, wherein the head pipe is mounted on the equipment frame, and the head pipe is used to contact the action area, and the number of nozzles is multiple, and the multiple nozzles are arranged at one end of the head pipe in a circular shape and at equal angles. In the present invention, by setting the tail pipe and the air supply pipe, when the smoke and dust in the front end of the tunnel is large, the air supply pipe is made to directly blow air into the head pipe, and the air flow drives the mist to be ejected when it is discharged to the front end through the head pipe, thereby achieving dust reduction at the front end of the tunnel, and the smoke and dust in the front section of the tunnel are sucked out through the head pipe to achieve dust suppression in the tunnel, and when the smoke and dust are small, the smoke and dust are restricted and sucked out by the air duct assembly, and when the smoke and dust are large, the smoke and dust are sprayed out by the air duct assembly to suppress the dust.

Description

Technical Field

[0001] The invention relates to the technical field of dust suppression devices, in particular to a coal mine excavation dust suppression device. Background Art

[0002] In the field of engineering, mining and construction, a large amount of dust will be generated during production, and dust suppression devices are needed to reduce the dust in the air. For example, in coal mining, the daily excavation and transportation volumes are considerable, and the amount of dust generated is also quite astonishing. In order to solve this problem, dust suppression devices are installed in the tunnels. Existing dust suppression devices are generally divided into spray type and exhaust type. Among them, the spray type dust suppression device has a nozzle that sprays water mist particles. These dry mist particles are evenly diffused in the air and fully contact with the flying dust particles to achieve the encapsulation and descent of the dust, thereby achieving dust reduction. The dust reduction speed is fast, but the humidity generated is high, and more water accumulation is produced, which is easy to affect the working environment. It is suitable for situations with large smoke and dust. The exhaust type dust suppression device mainly sucks the smoke and dust into the exhaust pipe, which has less impact on the working environment, but its dust exhaust and dust suppression speed is slow, and it is suitable for situations with small smoke and dust. In this regard, a dust suppression device that can be applied to different smoke levels is proposed. Summary of the Invention

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

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

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

[0006] a head pipe, mounted on the equipment rack, wherein the head pipe is used to contact the active area;

[0007] There are multiple nozzles, each of which is installed at one end of the head pipe at an equal angle in a ring shape, and the opening angle of the nozzle can be adjusted;

[0008] One end of the tail pipe is rotatably mounted to the other end of the head pipe, and the tail pipe is connected to the head pipe;

[0009] An air supply duct is rotatably connected at one end to the tail duct, a fan is installed inside the air supply duct, and the fan blows air from the other end of the air supply duct to the one end. After the air supply duct and the tail duct are rotated 180 degrees respectively, the air supply duct and the head duct are in a coaxial state, and the air supply duct and the tail duct are connected;

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

[0011] Furthermore, the outer wall of the other end of the head pipe is fixedly connected with a ring neck 1, the outer wall of one end of the tail pipe is fixedly connected with a ring neck 2, and an annular seat is provided between the tail pipe and the head pipe, and the annular seat is used for rotationally connecting with the ring necks 1 and 2.

[0012] Furthermore, the outer wall of the tail pipe is provided with a docking portion, one end of the air supply pipe is fixedly connected with an embedded seat, the embedded seat and the docking portion are rotatably connected, both sides of the outer wall of the docking portion are fixedly connected with a pin seat 1, the outer wall of the embedded seat is fixedly connected with a pin seat 2, and the pin seat 2 and the pin seat 1 can be fixed by a pin rod.

[0013] Furthermore, the driving module includes a driving motor and an arc gear rack, the output end of the driving motor is fixedly connected with a gear, the arc gear rack is fixedly connected to the second ring neck, the gear and the arc gear rack are meshed, and the driving motor is fixedly installed on the head pipe.

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

[0015] Furthermore, a ring frame is fixedly connected to the outer wall of one end of the head pipe, one end of the nozzle is rotatably connected to the ring frame, an extension frame is fixedly connected to the outer wall of the other end of the nozzle, a ring tube is slidably connected to the outer wall of one end of the head pipe, the nozzle and the ring tube are connected by a hose, and a push rod is rotatably connected to the ring tube between one end of the extension frame.

[0016] Furthermore, one end face of the head pipe is rotatably connected to a plurality of guide plates, the plurality of guide plates are arranged at equal angles in a ring, and the plurality of nozzles and the plurality of guide plates are staggered with each other, the outer wall of the guide plate is fixedly connected to an extension frame 2, one end of the extension frame 2 is rotatably connected to a push rod 2 between the ring pipe, and a lap portion is provided on one side of one end of the guide plate.

[0017] Furthermore, the radius of the extension frame 2 is greater than the radius of the extension frame 1, a plurality of linear motors are installed on the outer wall of the head pipe, the output end of the linear motor is connected to the ring pipe, the linear motor is used to drive the ring pipe to move, and the outer wall of the head pipe is fixedly connected to an outer protective cover, and the outer protective cover is used to protect the ring pipe and multiple nozzles.

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

[0019] Furthermore, the lifting module includes a screw rod and two support rods 1, one end of the support rod 1 is rotatably installed at the top position of the equipment frame, the two support rods 1 are respectively arranged on both sides of the top of the equipment frame, the other end of the support rod 1 is rotatably connected to the support rod 2, and a support wheel is rotatably connected between the support rod 1 and the support rod 2, one end of the two support rods 2 is rotatably connected to a cross frame, the screw rod is rotatably connected to the equipment frame, and one end of the screw rod is screwed into the cross frame.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Through the arrangement of the tail duct and the air supply duct, the air flows in from the air supply duct and is discharged from the rear end of the tail duct, so that the front end of the head duct inhales air and discharges it from the rear end of the tail duct, thereby sucking the air in the area in front of the air duct assembly and discharging it from the duct connected to the rear end of the tail duct. At the same time, multiple nozzles are in an open state, and mist is sprayed to the surroundings through the multiple nozzles, thereby forming a mist wall between the head duct and the inner wall of the tunnel to seal it. When the smoke and dust spread backward through the mist wall, the smoke and dust are reduced by the mist wall, thereby "blocking" the smoke and dust at the front end of the tunnel, thereby achieving dust suppression in the tunnel;

[0022] 2. Through the setting of air supply ducts and nozzles, when the smoke and dust in the front end of the tunnel is large, first rotate the air supply duct half a circle, and then rotate the tail duct half a circle, so that the air supply duct blows air directly into the head duct, and at the same time operate multiple nozzles to deflect to the state of closing toward the middle, so that the air flow is discharged to the front end through the head duct, driving the mist to be sprayed out, thereby achieving dust reduction at the front end of the tunnel, and sucking and discharging the smoke and dust at the front end of the tunnel through the head duct to achieve dust suppression in the tunnel. When the smoke and dust are small, the smoke and dust are restricted and sucked out by the air duct assembly. When the smoke and dust are large, the smoke and dust are sprayed out by the air duct assembly to suppress the dust. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

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

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

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

[0031] In the figure: 100, equipment rack; 110, bracket; 120, lifting module; 121, support rod 1; 122, support rod 2; 123, screw; 200, air duct assembly; 210, head pipe; 211, ring neck 1; 212, outer shield; 213, ring seat; 214, clamping seat 1; 220, tail pipe; 221, ring neck 2; 222, docking part; 223, pin seat 1; 224, 2. Card-connecting seat 2; 230. Air supply duct; 231. Embedded seat; 232. Pin seat 2; 240. Drive module; 241. Arc gear rack; 242. Drive motor; 243. Gear; 250. Nozzle; 251. Extension frame 1; 252. Push rod 1; 260. Guide plate; 261. Extension frame 2; 262. Push rod 2; 263. Overlapping part; 270. Linear motor; 271. Ring pipe; 280. Ring frame. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1 to 7In an embodiment of the present invention, a coal mine excavation dust suppression device 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, an air supply pipe 230, a drive module 240, and a nozzle 250. The head pipe 210 is installed on the equipment frame 100. The head pipe 210 is used to contact the action area. There are multiple nozzles 250. The multiple nozzles 250 are installed at one end of the head pipe 210 in a ring shape with equal angles. The opening angle of the nozzle 250 can be adjusted. One end of the tail pipe 220 rotates with the other end of the head pipe 210. The air supply duct 230 is installed, and the tail duct 220 is connected to the head duct 210. One end of the air supply duct 230 is rotatably connected 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 rotated one hundred and eighty degrees respectively, the air supply duct 230 and the head duct 210 are in a coaxial state, and the air supply duct 230 and the tail duct 220 are connected. The driving module 240 is installed at the other end of the head duct 210, and the driving module 240 is used to drive the tail duct 220 to rotate.

[0034] Specifically, initially, the exhaust duct is connected to the rear end of the tail duct 220, and the air supply duct 230 blows air into the tail duct 220. Since the air supply duct 230 and the tail duct 220 form an obtuse angle, the air enters the air supply duct 230 and is discharged from the rear end of the tail duct 220, so that the front end of the head duct 210 inhales air and discharges it from the rear end of the tail duct 220, thereby sucking the air in the area at the front end of the air duct assembly 200 and discharging it from the duct connected to the rear end of the tail duct 220. At the same time, multiple nozzles 250 are in an open state, and mist is sprayed to the surroundings through multiple nozzles 250, thereby forming a mist wall between the head duct 210 and the inner wall of the tunnel to seal it, so that when the smoke and dust spread backwards through the mist wall, the smoke and dust are reduced by the mist wall, thereby "blocking" the smoke and dust at the front end of the tunnel and passing through the head duct 210. The smoke and dust in the front section of the tunnel are sucked out to achieve dust suppression in the tunnel. When the smoke and dust in the front section of the tunnel is large, first rotate the air supply pipe 230 half a circle, and then rotate the tail pipe 220 half a circle (as shown in the attached figure). Figure 4 As shown in the state, the air supply duct 230 blows air directly into the head duct 210, and at the same time, the multiple nozzles 250 are deflected to a state of closing toward the middle, so that the air flow drives the mist to be sprayed out when it is discharged to the front end through the head duct 210, thereby achieving dust reduction at the front end of the tunnel. Example

[0035] like Figures 4 to 8As shown, in this embodiment, the outer wall of the other end of the head pipe 210 is fixedly connected with a ring neck 1 211, and the outer wall of one end of the tail pipe 220 is fixedly connected with a ring neck 221. An annular seat 213 is provided between the tail pipe 220 and the head pipe 210. The annular seat 213 is used to be rotatably connected with the ring neck 1 211 and the ring neck 221. 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 embedded seat 231, and the embedded seat 231 is rotatably connected to the docking portion 222. 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 embedded seat 231 is fixed. It is connected to a pin seat 232, and the pin seat 232 and the pin seat 1 223 can be fixed by a pin rod. The driving module 240 includes 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, and the arc gear rack 241 is fixedly connected to the ring neck 221. The gear 243 is meshed with the arc gear rack 241. The driving motor 242 is fixedly installed on the head pipe 210. Both sides of the outer wall of the other end of the head pipe 210 are fixedly installed with a clamping seat 1 214. The outer wall of one end of the tail pipe 220 is fixedly connected with a clamping seat 224. The clamping seat 224 can be clamped and fixed between the clamping seat 1 214.

[0036] In this embodiment, the driving motor 242 drives the arc gear rack 241 through the gear 243, thereby driving the tail pipe 220 to rotate, and driving the tail pipe 220 to rotate half a circle. Through the setting of the clamping seat 1 214 and the clamping seat 224, before the tail pipe 220 rotates, the clamping seat 1 214 and the clamping seat 224 are disengaged. After the tail pipe 220 is rotated into place, the clamping seat 1 214 and the clamping seat 224 are clamped and fixed to fix the angle between the head pipe 210 and the tail pipe 220. The air supply duct 230 is manually rotated, and the tail pipe 220 and the air supply duct 230 are fixed through the clamping between the pin seat 1 223 and the pin seat 232. Example

[0037] like Figures 5 to 8As shown, in this embodiment, a ring frame 280 is fixedly sleeved on the outer wall of one end of the head pipe 210, one end of the nozzle 250 is rotatably connected to the ring frame 280, and an extension frame 1 251 is fixedly connected to the outer wall of the other end of the nozzle 250. A ring pipe 271 is slidably sleeved on the outer wall of one end of the head pipe 210, and the nozzle 250 and the ring pipe 271 are connected through a hose. A push rod 1 252 is rotatably connected between one end of the extension frame 1 251 and the ring pipe 271. A plurality of guide plates 260 are rotatably connected to the end surface of one end of the head pipe 210. 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 rotatably connected. They are staggered with each other, and the outer wall of the guide plate 260 is fixedly connected with an extension frame 261, and one end of the extension frame 261 is rotatably connected to the ring tube 271 with a push rod 262. A lap portion 263 is provided on one side of one end of the guide plate 260. The radius of the extension frame 261 is greater than the radius of the extension frame 1 251. A plurality of linear motors 270 are installed on the outer wall of the head pipe 210, and the output end of the linear motor 270 is connected to the ring tube 271. The linear motor 270 is used to drive the ring tube 271 to move. The outer wall of the head pipe 210 is fixedly connected with an outer shield 212, and the outer shield 212 is used to protect the ring tube 271 and the plurality of nozzles 250.

[0038] During specific implementation, when the head pipe 210 sucks the airflow at the front end, the linear motor 270 drives the annular tube 271 to move backward, thereby driving the nozzle 250 to deflect outward through the push rod 252. When the head pipe 210 blows air toward the front end, the annular tube 271 moves forward, thereby allowing the nozzle of the nozzle 250 to invade the airflow ejected from the head pipe 210. Through the setting of the guide plate 260, when the annular tube 271 moves forward, it drives multiple guide plates 260 to close, so that the multiple guide 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 out. When the nozzle 250 ejects outward, the annular tube 271 drives the guide plate 260 to open, so that the annular tube 271 covers the gaps between the multiple nozzles 250, thereby reducing the leakage of smoke and dust from the gaps between the guide plates 260.

[0039] like Figure 1As shown, in this embodiment, a plurality of brackets 110 are installed on the top surface of the equipment rack 100, and the brackets 110 are fixedly installed between the head pipe 210, and a lifting module 120 is installed on the top of the equipment rack 100. The lifting module 120 can support the tail pipe 220 and the air supply duct 230. The lifting module 120 includes a screw rod 123 and two support rods 121. One end of the support rod 121 is rotatably installed at the top position of the equipment rack 100, and the two support rods 121 are respectively arranged on both sides of the top of the equipment rack 100. The other end of the support rod 121 is rotatably connected to the support rod 2 122, and the support rod 121 and the support rod 2 122 are rotatably connected. A support wheel is connected between the support rod 121 and the support rod 2 122. 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 rack 100, and one end of the screw rod 123 is screwed into the cross frame.

[0040] During specific implementation, the screw rod 123 is rotated to adjust the height of the support wheel, so that when the tail duct 220 or the air supply duct 230 is parallel to the head duct 210, the tail duct 220 or the air supply duct 230 is supported by the support wheel, reducing the load on the connection between the tail duct 220 and the head duct 210.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0042] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of 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 implementation methods that can be understood by those skilled in the art.

Claims

1. A coal mine excavation dust suppression device, characterized in that: It 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 rack (100), and the head pipe (210) is used to contact the active area; There are multiple nozzles (250), and the multiple nozzles (250) are installed at one end of the head pipe (210) in a circular shape and 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 in communication 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), and the fan blows air from the other end to the one end of the air supply duct (230). After the air supply duct (230) and the tail duct (220) are rotated 180 degrees respectively, the air supply duct (230) and the head duct (210) are in a coaxial state, and the air supply duct (230) and the tail duct (220) are communicated with each other. 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 of the other end of the head pipe (210) is fixedly connected to a first ring neck portion (211), and the outer wall of one end of the tail pipe (220) is fixedly connected to 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 embedded seat (231), the embedded 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 embedded seat (231) is fixedly connected with a pin seat 2 (232), and 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 to a gear (243); the arc gear rack (241) is fixedly connected to the second ring neck portion (221); the gear (243) and the arc gear rack (241) are meshed; 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 with 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 (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 (250), a ring pipe (271) is slidably sleeved on the outer wall of one end of the head pipe (210), the nozzle (250) and the ring pipe (271) are connected via a hose, and a push rod (252) is rotatably connected between one end of the extension frame (251) and the ring pipe (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 extension frame 2 (261) is fixedly connected to the outer side wall of the guide plate (260), and a push rod 2 (262) is rotatably connected between one end of the extension frame 2 (261) and the ring pipe (271), and a lap joint (263) is provided on 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 shield (212) is fixedly connected to the outer wall of the head pipe (210). The outer shield (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) includes 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), and 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), and 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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