Underground coal mine air-water linkage spraying dust-settling device

Abstract

The utility model is applicable to the technical field of spraying and dust settling, and provides a coal mine underground wind-water linkage spraying and dust settling device which comprises a support and a gas supply assembly and a liquid supply assembly which are installed at the bottom of the support, the gas supply assembly comprises a gas supply pipe, the liquid supply assembly comprises a liquid supply pipe, and the gas supply pipe and the liquid supply pipe are both installed at the bottom of the support. The device solves the problems that a wind-water linkage spraying device is fixed in spraying coverage angle, large-range coverage is difficult to achieve in a complex space of an underground coal mine, and the treatment requirement of a dust falling blind area and a dust-prone section is not met, the device is provided with a main nozzle and a plurality of auxiliary nozzles, and the auxiliary nozzles diffuse spraying on the outer wall of a fixed pipe to form a mist barrier to block dust, so that the dust falling effect is improved. When the main nozzle impacts to fall dust and the dust amount is large, the lantern ring moves to enable the conical part of the lantern ring to extrude the branch pipe, the branch pipe is unfolded and inclined from the groove, the spraying angle of the auxiliary nozzle is changed, the mist amount in the direction of the main nozzle is increased while the mist barrier is maintained, and the dust falling effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of spray dust suppression technology, and more specifically, it relates to a coal mine underground ventilation and water linkage spray dust suppression device. Background Technology

[0002] In the underground working environment, high dust concentrations can easily cause pneumoconiosis and even pose an explosion risk. Coal mine underground air-water linkage spray dust suppression is an early dust control technology adopted in coal mines. It combines the dual power of high-pressure water flow and compressed air. Through the air-water linkage device, pressurized water and compressed air are mixed in a specific ratio and then sprayed out through specially designed nozzles. The compressed air accelerates the atomization process, making the water mist particles smaller and more evenly distributed, greatly increasing the contact area with dust.

[0003] Currently, most existing spray dust suppression devices add a diameter adjustment mechanism inside the conventional nozzle to expand the spray outlet size by changing the air pressure, thereby increasing the water flow rate per unit time and improving the atomization rate and dust suppression effect.

[0004] However, although existing wind-water linkage spray devices can increase the atomization volume by adjusting the outlet diameter, the spray coverage angle is still limited to a fixed range. It is difficult to achieve large-scale coverage in the complex space of underground coal mines, resulting in obvious blind spots in the dust suppression area. Especially in high-dust areas such as mining faces and transfer points, it cannot meet the needs of large-area dust control. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a coal mine underground ventilation and water linkage spray dust suppression device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal mine underground ventilation and water linkage spray dust suppression device, including a support frame and an air supply component and a liquid supply component installed at the bottom of the support frame. The air supply component includes an air supply pipe, and the liquid supply component includes a liquid supply pipe. Both the air supply pipe and the liquid supply pipe are installed at the bottom of the support frame. Multiple spray components are equidistantly connected to the outer wall of the liquid supply pipe on the side away from the air supply pipe.

[0007] Each spray assembly includes a main pipe connected to a liquid supply pipe and a guide pipe connected to the outer wall of the main pipe. The guide pipe is connected to an air supply pipe. One end of the main pipe is connected to a connecting pipe, and one end of the connecting pipe is connected to a main nozzle. A fixing pipe is sleeved on the outer wall of the connecting pipe. Two branch pipes are hinged to the outer wall of the fixing pipe. One end of each branch pipe is connected to the connecting pipe via a flexible hose. Multiple auxiliary nozzles are connected to the side wall of each branch pipe.

[0008] The present invention is further configured such that: the air supply pipe and the liquid supply pipe are staggered and both are frame-shaped, the top of the air supply pipe is connected to an air inlet pipe, and the top of the liquid supply pipe is connected to an liquid inlet pipe.

[0009] By adopting the above technical solution, the air inlet pipe is used to connect with an external air supply device, which supplies high-pressure gas into the interior of the air supply pipe through the air inlet pipe. The liquid inlet pipe is connected with an external liquid supply device, which supplies high-pressure gas into the interior of the liquid supply pipe through the liquid inlet pipe.

[0010] Multiple auxiliary nozzles work together to diffuse the spray on the outer wall of the fixed pipe, thereby forming a fog barrier to block the spread of dust, while the main nozzle sprays the spray in the direction of the dust, thus suppressing the dust raised underground and improving the dust suppression effect in coal mines.

[0011] The present invention is further configured such that: two first grooves are symmetrically opened on the outer side wall of the fixed tube, and two branch tubes are arranged corresponding to the two first grooves. The end of the branch tube near the main nozzle is hinged to the inside of the corresponding first groove by a rotating shaft.

[0012] The present invention is further configured such that: torsion springs are connected between the top and bottom of the branch pipe and the inner wall of the first groove, and both torsion springs are located on the outer wall of the hinge point between the branch pipe and the first groove.

[0013] The present invention is further configured such that: a collar is slidably connected to the outer wall of the fixed pipe, and the collar is located between the branch pipe and the main pipe.

[0014] The present invention is further configured such that: a tapered portion is provided at one end of the collar near the branch pipe, and an inclined portion is provided on the side of the branch pipe near the collar, the inclined portion being oriented toward the corresponding first groove.

[0015] The present invention is further configured such that: a second groove is provided on the outer wall of the fixed tube, and an electric telescopic rod is installed inside the second groove, wherein the piston rod end of the electric telescopic rod is connected to the inner wall of the collar.

[0016] By adopting the above technical solution, when the amount of dust raised downhole is large, the collar moves closer to the branch pipe. The conical part on the collar first fits against the inclined part. As the collar continues to move, the conical part slides on the inclined part, and the collar squeezes the branch pipe. The branch pipe is pushed and swings, causing the branch pipe to unfold from the corresponding first groove. The branch pipe is in an inclined state, and the spray angle of the auxiliary nozzle changes. In this state, the fog barrier still exists, and the fog sprayed by the auxiliary nozzle assists the main nozzle, increasing the amount of fog in the spray direction of the main nozzle, further improving the dust suppression effect.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] (1) By setting a main nozzle and multiple auxiliary nozzles, the multiple auxiliary nozzles work together to diffuse the spray on the outer wall of the fixed pipe, thereby forming a fog barrier to block the spread of dust, while the main nozzle sprays the spray towards the dust, thereby reducing the dust raised underground and improving the dust reduction effect in coal mines.

[0019] (2) When the amount of dust raised in the well is large, the collar moves closer to the branch pipe. The conical part on the collar first fits with the inclined part. The collar continues to move, and the conical part slides on the inclined part. The collar squeezes the branch pipe, and the branch pipe swings under the pushing force, causing the branch pipe to unfold from the corresponding first groove. The branch pipe is in an inclined state, and the spray angle of the auxiliary nozzle changes. In this state, the fog barrier still exists, and the fog sprayed by the auxiliary nozzle assists the main nozzle, increasing the amount of fog in the spray direction of the main nozzle, and further improving the dust suppression effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a coal mine underground ventilation and water-based spray dust suppression device according to the present invention.

[0021] Figure 2 This is a schematic diagram of the combined structure of the air supply pipe, liquid supply pipe, and spray assembly in this utility model.

[0022] Figure 3 This is a partial structural diagram of the spray assembly in this utility model.

[0023] Figure 4 for Figure 3 A magnified structural diagram of area A in the middle.

[0024] Figure 5 This is a partial structural diagram of the spray assembly in this utility model, viewed from below.

[0025] Explanation of reference numerals in the attached diagram: 1. Support;

[0026] 2. Air supply components; 21. Air supply pipe; 22. Air inlet pipe;

[0027] 3. Liquid supply assembly; 31. Liquid supply pipe; 32. Liquid inlet pipe;

[0028] 4. Spray assembly; 41. Main pipe; 42. Connecting pipe; 43. Fixed pipe; 44. Main nozzle; 45. Guide pipe; 46. Branch pipe; 47. Collar; 48. First groove; 49. Torsion spring; 401. Hose; 402. Auxiliary nozzle; 403. Second groove; 404. Electric telescopic rod; 405. Conical part; 406. Inclined part. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] Please see Figures 1-5 The present invention provides the following technical solution:

[0032] Example 1, see Figure 1 A coal mine underground ventilation and water-cooled spray dust suppression device includes a support frame 1 and an air supply component 2 and a liquid supply component 3 installed at the bottom of the support frame 1. The air supply component 2 and the liquid supply component 3 are used to provide high-pressure gas and liquid respectively in the ventilation and water-cooled spray technology. The air supply component 2 includes an air supply pipe 21, and the liquid supply component 3 includes a liquid supply pipe 31. Both the air supply pipe 21 and the liquid supply pipe 31 are installed at the bottom of the support frame 1. The air supply component 2 uses the air supply pipe 21 as the main body for high-pressure gas transportation, and the liquid supply component 3 uses the liquid supply pipe 31 as the main body for liquid transportation. The gas supply pipe 21 and the liquid supply pipe 31 are offset and both are frame-shaped. The top of the gas supply pipe 21 is connected to the air inlet pipe 22, and the top of the liquid supply pipe 31 is connected to the liquid inlet pipe 32. The air inlet pipe 22 is used to connect with an external gas supply device. The external gas supply device supplies high-pressure gas into the interior of the gas supply pipe 21 through the air inlet pipe 22. The gas supply device can be an air pump, which is not specifically limited here. The liquid inlet pipe 32 is connected to an external liquid supply device. The liquid supply device can be a water pump, which is not specifically limited here. The external liquid supply device supplies high-pressure gas into the interior of the liquid supply pipe 31 through the liquid inlet pipe 32.

[0033] See Figure 1 Multiple spray components 4 are equidistantly connected to the outer wall of the liquid supply pipe 31 and the side away from the air supply pipe 21. The liquid and high-pressure gas transported by the liquid supply pipe 31 and the air supply pipe 21 are respectively discharged into the multiple spray components 4 and atomized. Then, they are sprayed out simultaneously through the multiple spray components 4 to suppress dust. The specific structure of the spray component 4 is as follows:

[0034] See Figures 2-5 Each spray assembly 4 includes a main pipe 41 connected to the liquid supply pipe 31 and a guide pipe 45 connected to the outer wall of the main pipe 41. The guide pipe 45 is connected to the air supply pipe 21. The high-pressure gas inside the air supply pipe 21 is injected into the interior of the main pipe 41 through the guide pipe 45. At the same time, the liquid in the liquid supply pipe 31 is injected into the interior of the main pipe 41. One end of the main pipe 41 is connected to a connecting pipe 42. One end of the connecting pipe 42 is connected to a main nozzle 44. The high-pressure gas and liquid are mixed inside the main pipe 41 and injected into the connecting pipe 42 at the same time, and then sprayed out through the main nozzle 44.

[0035] When high-pressure gas is ejected from the main nozzle 44 at high speed, a low-pressure zone is formed at the outlet. Under the action of pressure difference, the liquid is drawn into the airflow. The high-speed, high-pressure gas generates strong shear force on the liquid surface, tearing the liquid into fine liquid filaments or droplets, thereby achieving the purpose of atomization.

[0036] See Figures 2-5 A fixed pipe 43 is sleeved on the outer wall of the connecting pipe 42. Two branch pipes 46 are provided on the outer wall of the fixed pipe 43. Two first grooves 48 are symmetrically opened on the outer wall of the fixed pipe 43. The two branch pipes 46 are correspondingly arranged with the two first grooves 48. The end of the branch pipe 46 near the main nozzle 44 is hinged to the inside of the corresponding first groove 48 by a pivot. A flexible hose 401 is connected between one end of the two branch pipes 46 and the connecting pipe 42. When liquid and high-pressure gas are transported inside the connecting pipe 42, the liquid and high-pressure gas are diverted by the flexible hose 401 and discharged into the inside of the corresponding branch pipe 46. Multiple auxiliary nozzles 402 are connected to the side wall of the branch pipe 46. The liquid and high-pressure gas entering the inside of the branch pipe 46 are sprayed out through the corresponding auxiliary nozzles 402, and the spraying principle of the auxiliary nozzles 402 is the same as that of the main nozzle 44.

[0037] In this state, multiple auxiliary nozzles 402 work together to diffuse spray on the outer wall of the fixed pipe 43, thereby forming a fog barrier to block the spread of dust, while the main nozzle 44 sprays spray towards the dust, thereby suppressing the dust raised underground.

[0038] See Figures 2-5 A collar 47 is slidably connected to the outer wall of the fixed pipe 43. The collar 47 is located between the branch pipe 46 and the main pipe 41. A tapered portion 405 is provided at the end of the collar 47 near the branch pipe 46, and an inclined portion 406 is provided on the side of the branch pipe 46 near the collar 47. The inclined portion 406 is oriented towards the corresponding first groove 48. When a large amount of dust is raised downhole, the collar 47 moves closer to the branch pipe 46. The tapered portion 405 on the collar 47 first fits against the inclined portion 406. As the movement continues, the conical part 405 slides on the inclined part 406, and the collar 47 squeezes the branch pipe 46. The branch pipe 46 is pushed and swings, causing the branch pipe 46 to unfold from the corresponding first groove 48. The branch pipe 46 is in an inclined state, and the spray angle of the auxiliary nozzle 402 changes. In this state, the fog barrier still exists, and the fog sprayed by the auxiliary nozzle 402 assists the main nozzle 44, increasing the amount of fog in the spray direction of the main nozzle 44, and further improving the dust suppression effect.

[0039] See Figures 2-5The outer wall of the fixed tube 43 is provided with a second groove 403, and an electric telescopic rod 404 is installed inside the second groove 403. The piston rod end of the electric telescopic rod 404 is connected to the inner wall of the collar 47. The electric telescopic rod 404 is used to drive the collar 47 to move, thereby adjusting the position of the collar 47 on the outer wall of the fixed tube 43. That is, when the electric telescopic rod 404 retracts, the collar 47 squeezes the branch tube 46; conversely, when the electric telescopic rod 404 extends, the collar 47 moves away from the branch tube 46.

[0040] See Figure 4 Both the top and bottom of the branch pipe 46 are connected to the inner wall of the first groove 48 by torsion springs 49. Both torsion springs 49 are located on the outer wall of the hinge point between the branch pipe 46 and the first groove 48. When the branch pipe 46 swings, it drives the shaft to rotate, and the torsion springs 49 are twisted. In the initial state of the torsion springs 49, the branch pipe 46 is retracted inside the first groove 48. When the collar 47 squeezes the branch pipe 46, the torsion springs 49 twist. When the collar 47 moves away from the branch pipe 46, the torque of the torsion springs 49 drives the branch pipe 46 to reset and retract back into the first groove 48.

[0041] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A coal mine underground ventilation and water-based combined spray dust suppression device, characterized in that: The device includes a support (1) and an air supply assembly (2) and a liquid supply assembly (3) installed at the bottom of the support (1). The air supply assembly (2) includes an air supply pipe (21), and the liquid supply assembly (3) includes a liquid supply pipe (31). The air supply pipe (21) and the liquid supply pipe (31) are both installed at the bottom of the support (1). Multiple spray assemblies (4) are equidistantly connected to the outer wall of the liquid supply pipe (31) and the side away from the air supply pipe (21). Each spray assembly (4) includes a main pipe (41) connected to the liquid supply pipe (31) and a guide pipe (45) connected to the outer wall of the main pipe (41). The guide pipe (45) is connected to the air supply pipe (21). One end of the main pipe (41) is connected to a connecting pipe (42). One end of the connecting pipe (42) is connected to a main nozzle (44). A fixed pipe (43) is sleeved on the outer wall of the connecting pipe (42). Two branch pipes (46) are hinged to the outer wall of the fixed pipe (43). A flexible hose (401) is connected between one end of the two branch pipes (46) and the connecting pipe (42). Multiple auxiliary nozzles (402) are connected to the side wall of the branch pipes (46).

2. The coal mine underground ventilation and water-cooled combined spray dust suppression device according to claim 1, characterized in that: The air supply pipe (21) and the liquid supply pipe (31) are staggered and both are frame-shaped. The top of the air supply pipe (21) is connected to the air inlet pipe (22), and the top of the liquid supply pipe (31) is connected to the liquid inlet pipe (32).

3. The coal mine underground ventilation and water-cooled combined spray dust suppression device according to claim 1, characterized in that: The outer wall of the fixed tube (43) has two first grooves (48) symmetrically opened. The two branch tubes (46) are correspondingly arranged with the two first grooves (48). The end of the branch tube (46) near the main nozzle (44) is hinged to the inside of the corresponding first groove (48) by a rotating shaft.

4. A coal mine underground ventilation and water-cooled combined spray dust suppression device according to claim 3, characterized in that: Both the top and bottom of the branch pipe (46) are connected to the inner wall of the first groove (48) by torsion springs (49), and both torsion springs (49) are located on the outer wall of the hinge point between the branch pipe (46) and the first groove (48).

5. A coal mine underground ventilation and water-cooled combined spray dust suppression device according to claim 4, characterized in that: The outer wall of the fixed pipe (43) is slidably connected with a collar (47), which is located between the branch pipe (46) and the main pipe (41).

6. A coal mine underground ventilation and water-cooled combined spray dust suppression device according to claim 5, characterized in that: The collar (47) has a tapered portion (405) at one end near the branch pipe (46), and the branch pipe (46) has an inclined portion (406) on one side near the collar (47), with the inclined portion (406) facing the corresponding first groove (48).

7. A coal mine underground ventilation and water-cooled combined spray dust suppression device according to claim 6, characterized in that: The outer wall of the fixed tube (43) is provided with a second groove (403), and an electric telescopic rod (404) is installed inside the second groove (403). The piston rod end of the electric telescopic rod (404) is connected to the inner wall of the collar (47).

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