Spraying device for coal mine section roadway

Abstract

The invention relates to the technical field of coal mine dust removal, and discloses a coal mine section roadway spraying device which comprises a frame body, a main water pipe A and two auxiliary water pipes B are arranged in the frame body, a top sprayer is arranged on the surface of the main water pipe A, and a plurality of side sprayers are arranged on the surfaces of the auxiliary water pipes B; a plurality of steering grooves matched with side spray heads are formed in the opposite sides of the inner wall of the frame body, a main water pipe B and an auxiliary water pipe A are arranged at the bottom in the frame body, the main water pipe A and the auxiliary water pipe B are connected with the main water pipe B and the auxiliary water pipe A through moving structures, and when the moving structures move the main water pipe A and the auxiliary water pipe B up and down, the main water pipe A and the auxiliary water pipe B are driven to rotate. The spraying angle of the side spray head is movably adjusted along the steering groove; and the side spray head further comprises a triggering structure for triggering the moving structure. The spraying curtain has the effect of facilitating passing personnel to quickly pass through the spraying curtain, and the risk that water mist shields and wets workers is reduced.

Description

Technical Field

[0001] This invention relates to the field of coal mine dust removal technology, specifically to a coal mine cross-section roadway spraying device. Background Technology

[0002] During the excavation of full-section coal mine roadways, dust will inevitably be generated in the roadways. This dust and harmful gases seriously damage the health of coal miners. At present, by setting up full-section spray dust suppression devices, a dense water mist curtain is formed on the entire cross-section of the roadway, which has become a key measure to capture and settle floating dust and ensure safe production.

[0003] However, existing full-section spray dust suppression technology has the limitation of poor passability. When workers need to pass through the water mist curtain, the dense water mist will instantly obscure their vision, creating a blind spot and greatly increasing the safety risks of collisions and falls. At the same time, the passersby are soaked by the water mist, which not only causes physical discomfort, but may also lead to health problems in the long run. Moreover, temporarily turning off the spray will cause the dust suppression to fail. Therefore, how to solve the problem of inconvenient passage while ensuring efficient dust suppression has become an urgent direction for the optimization and upgrading of this technology. Summary of the Invention

[0004] The purpose of this invention is to provide a coal mine cross-section roadway spraying device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a coal mine cross-section roadway spraying device, comprising a frame, wherein a main water pipe A and two auxiliary water pipes B are respectively arranged inside the frame, a top nozzle is provided on the surface of the main water pipe A, and a plurality of side nozzles are provided on the surface of the auxiliary water pipes B, and a plurality of turning grooves adapted to the side nozzles are opened on opposite sides of the inner wall of the frame, and the main water pipe B and auxiliary water pipe A are respectively arranged at the bottom of the frame, wherein the main water pipe A and auxiliary water pipe B are connected to the main water pipe B and auxiliary water pipe A through a moving structure, and when the main water pipe A and auxiliary water pipe B move up and down in the moving structure, the side nozzles move along the turning grooves to adjust the spraying angle, and a triggering structure for triggering the moving structure is also included.

[0006] Preferably, the movable structure includes a fixing block, which is fixedly connected to the surfaces of the main water pipe A and the auxiliary water pipe B respectively. The bottom of the main water pipe A is slidably connected to the inside of the main water pipe B, the auxiliary water pipe B is sleeved on the top of the auxiliary water pipe A, and a push plate is fixedly connected to the bottom of the main water pipe A.

[0007] Preferably, the push plate is connected to the main water pipe B via a spring.

[0008] Preferably, the triggering structure includes a base fixedly connected to the bottom of the frame, a pressing plate slidingly on the inner wall of the base, a connecting pipe and a secondary conveying pipe fixedly connected to the surfaces of the main water pipe B and the secondary water pipe A respectively, with one end of the secondary conveying pipe penetrating through the frame and the base, and one end of the connecting pipe penetrating through the frame and fixedly connected to a connecting block, the main conveying pipe fixedly connected to the surface of the base, the main conveying pipe being connected to the connecting block through a connecting elbow, the connecting elbow being able to slide up and down within the connecting block and switch its connection state with the connecting pipe, and the pressing plate being connected to the connecting elbow through a connecting block.

[0009] Preferably, the main delivery pipe is connected to the connecting elbow via a corrugated pipe.

[0010] Preferably, the pressure plate is connected to the base via a pneumatic rod.

[0011] Preferably, the gas spring is a damping gas spring.

[0012] Preferably, the ends of both the secondary and main delivery pipes furthest from the base are connected to an external water pumping device.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This invention utilizes the combined action of the top nozzle and the side nozzle. The lateral spray from the side nozzle can effectively slow down the descent speed of the dust-suppressing atomized droplets sprayed from the top nozzle, prolonging the dust retention time and improving dust suppression efficiency.

[0015] 2. This invention utilizes a rotating side nozzle technique. By having the side nozzles on both sides of the frame rotate in opposite directions, the spray direction is relatively deflected. This ensures uninterrupted dust suppression while creating an oblique passage space within the frame, facilitating worker passage, preventing obstructed vision and wetting, and ensuring continuous dust suppression, thus improving passage and dust suppression efficiency.

[0016] 3. This invention utilizes a technical means of setting up a connecting elbow and a connecting block to work together in a staggered and connected manner. After the staff arrives at the designated area and steps on the pressure plate, the connecting elbow moves down within the connecting block and is staggered from the connecting port of the connecting pipe, causing the main water pipe B and main water pipe A to stop water supply, thereby pausing the spraying of the top nozzles to prevent passersby from getting wet. The side nozzles and top nozzles are independent water supply systems. When the top nozzles stop spraying, the side nozzles can still continue spraying to suppress dust, effectively improving passage efficiency while ensuring dust suppression. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 For the present invention Figure 1Enlarged view of point A in the image;

[0019] Figure 3 This is a cross-sectional view of the overall structure of the present invention;

[0020] Figure 4 For the present invention Figure 3 Enlarged view of point B in the image;

[0021] Figure 5 This is a schematic diagram illustrating the connection between the base and the pressing plate according to the present invention;

[0022] Figure 6 This is a cross-sectional view of the base used to illustrate the internal structure of the base in this invention;

[0023] Figure 7 This is a cross-sectional view of the internal structure of the base after the pressure plate has been pressed down, as per the present invention.

[0024] Figure 8 This is a schematic diagram illustrating the spray direction after the side nozzle is rotated.

[0025] In the diagram: 1. Frame; 2. Main water pipe A; 21. Top nozzle; 22. Main water pipe B; 221. Push plate; 222. Spring; 23. Connecting pipe; 231. Connecting block; 24. Main delivery pipe; 241. Corrugated pipe; 242. Connecting elbow; 3. Auxiliary water pipe A; 31. Auxiliary water pipe B; 311. Fixing block; 32. Side nozzle; 321. Turning groove; 33. Auxiliary delivery pipe; 4. Base; 41. Step plate; 411. Air rod. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This invention discloses a coal mine cross-section roadway spraying device, such as... Figure 1-8As shown, the system includes a frame 1, which is an integral frame with a domed top to adapt to the cross-sectional shape of the tunnel and is erected on the inner wall of the tunnel. A main water pipe A2 and two auxiliary water pipes B31 are respectively installed inside the frame 1. The main water pipe A2 runs along the upper half of the entire frame 1, while the two auxiliary water pipes B31 are only located on the two side sides of the frame 1. A top nozzle 21 is installed on the surface of the main water pipe A2, located at the center of the arched beam of the frame 1, for large-area atomized spraying to suppress dust. Several side nozzles 32 are installed on the surface of the auxiliary water pipes B31. Several turning grooves 321 adapted to the side nozzles 32 are opened on opposite sides of the inner wall of the frame 1. The turning grooves 321 are curved from top to bottom. The side nozzles 32 extend from the turning grooves 321. When the side nozzles 32 slide from top to bottom in the turning grooves 321, their spray angle will deflect laterally. The turning grooves 321 on opposite sides of the two sides of the body 1 face opposite directions, so that the side nozzles 32 on both sides turn in opposite directions. The side nozzles 32 spray horizontally, and the horizontal airflow generated by the spray further receives the atomized water droplets sprayed downward by the top nozzle 21 and prolongs their falling time, thereby increasing the combination time between the atomized water droplets and dust and improving the atomization effect. The bottom of the frame 1 is respectively provided with a main water pipe B22 and an auxiliary water pipe A3. The bottom of the frame 1 should be buried underground in the tunnel and flush with the ground during installation to avoid affecting the passage of people or vehicles and equipment. The main water pipe A22 and the auxiliary water pipe B31 are connected to the main water pipe B22 and the auxiliary water pipe A3 through a moving structure. When the main water pipe A22 and the auxiliary water pipe B31 move up and down in the moving structure, the side nozzles 32 move along the turning grooves 321 to adjust the spray angle. It also includes a triggering structure for triggering the moving structure.

[0028] Specifically, the downward movement of the moving structure is triggered by the triggering structure. At this time, the side nozzles 32 on both sides of the frame 1 will slide down along the turning groove 321 and deflect accordingly under the guidance of the turning groove 321, causing their spraying angle to shift. They will no longer spray along the horizontal axis of the frame 1. Since the turning grooves 321 on the two side walls of the frame 1 face opposite directions, the side nozzles 32 on the two side walls of the frame 1 will spray in opposite directions, forming a spray pattern as shown in the image. Figure 8 The relatively tilted spraying direction shown leaves a tilted passage space in the central area of ​​frame 1, which facilitates the passage of personnel and avoids problems such as obstruction and getting wet.

[0029] like Figure 3 and Figure 4As shown, in this embodiment, the moving structure includes a fixing block 311, which is fixedly connected to the surfaces of the main water pipe A2 and the auxiliary water pipe B31. Through the connection of the fixing block 311, the main water pipe A2 and the auxiliary water pipe B31 can move up and down synchronously. The bottom of the main water pipe A2 is slidably connected to the inside of the main water pipe B22. The auxiliary water pipe B31 is sleeved on the top of the auxiliary water pipe A3, and the connection between the auxiliary water pipe B31 and the auxiliary water pipe A3 is sealed. The auxiliary water pipe B31 can slide up and down and rotate on the surface of the auxiliary water pipe A3. A push plate 221 is fixedly connected to the bottom of the main water pipe A2. The surface of the push plate 221 has a through hole for water supply, and the diameter of the through hole is smaller than the inner diameter of the main water pipe B22.

[0030] Specifically, when water is supplied to the main water pipe A2 and the auxiliary water pipe B31 via the main water pipe B22 and the auxiliary water pipe A3 respectively, the flow space is reduced because the diameter of the through hole on the surface of the push plate 221 is smaller than the inner diameter of the main water pipe B22. This reduces the water pressure, and under this pressure, the water flow in the main water pipe B22 first pushes the push plate 221, causing it to move upwards and lift the main water pipe A2. The main water pipe A2 then moves the fixing block 311 and the auxiliary water pipe B31 upwards. As the main water pipe A2 moves upward, the auxiliary water pipe B31 will drive the side nozzles 32 to move upward within the turning groove 321, and the side nozzles 32 will be in a relatively spraying state without deviation. This is the normal dust suppression state before personnel pass through. At this time, the water flow in the main water pipe A2 will be sprayed out at the top nozzle 21 to form an atomized water flow for dust suppression, while the water flow in the auxiliary water pipe A3 will enter the auxiliary water pipe B31 and be sprayed out through several side nozzles 32 to form a horizontal atomized water flow for atomized dust removal.

[0031] Correspondingly, when the water supply in the main water pipe B22 stops, the water pressure decreases. Under the action of gravity, the main water pipe A2 will drive the push plate 221 to move down to the return position. At this time, the fixing block 311 will drive the auxiliary water pipe B31 to move down, and the side nozzles 32 on the surface of the auxiliary water pipe B31 will move down and be deflected under the guidance of the turning groove 321, spraying towards one side of the frame 1. This forms a state in which the side nozzles 32 on the two sides of the frame 1 spray in opposite directions, leaving an oblique space for people to pass through. At this time, since the water supply in the main water pipe B22 stops, there is no more water flow in the main water pipe A2. Therefore, the top nozzle 21 will stop spraying to avoid wetting the passing personnel, thus making it easier for the passing personnel to pass through smoothly.

[0032] Furthermore, the push plate 221 is connected to the main water pipe B22 via a spring 222. The two ends of the spring 222 are fixedly connected to the push plate 221 and the main water pipe B22, respectively. During the process of the push plate 221 moving upward under water pressure, the push plate 221 compresses the spring 222. When the water pressure gradually decreases, the spring 222 can quickly move the push plate 221 and the main water pipe A2 downward and reset through its elastic potential energy, thereby completing the deflection of the side nozzle 32 in a timely manner.

[0033] like Figure 5 , Figure 6 and Figure 7 As shown, in this embodiment, the triggering structure includes a base 4 fixedly connected to the bottom of the frame 1. A pressing plate 41 slides on the inner wall of the base 4. A connecting pipe 23 and a secondary conveying pipe 33 are fixedly connected to the surfaces of the main water pipe B22 and the secondary water pipe A3, respectively. One end of the secondary conveying pipe 33 passes through the frame 1 and the base 4, and one end of the connecting pipe 23 passes through the frame 1 and is fixedly connected to a connecting block 231. A main conveying pipe 24 is fixedly connected to the surface of the base 4. The main conveying pipe 24 is connected to the connecting block 231 through a connecting elbow 242. The connecting elbow 242 can slide up and down within the connecting block 231 and switch its connection state with the connecting pipe 23. The pressing plate 41 is connected to the connecting elbow 242 through a connecting block 42.

[0034] Specifically, when passing through the spray curtain, the worker steps on the pressure plate 41. Under normal conditions, the pressure plate 41 should be raised above the ground for easy stepping. Under the downward pressure of the worker's or vehicle's weight, the pressure plate 41 will move downwards accordingly, causing the connecting block 42 to move downwards simultaneously. This causes the connecting block 42 to press down on the connecting elbow 242, which in turn slides down within the connecting block 231, causing its connection port to be misaligned with the connection port of the connecting pipe 23. At this time, the water source within the connecting elbow 242 will be blocked by the connecting block 231. The water cannot enter the connecting pipe 23, so the water pressure in the connecting pipe 23, the main water pipe B22, and the main water pipe A2 will drop, causing the top nozzle 21 to stop spraying to suppress dust and avoid obstructing or wetting the passing personnel. However, the auxiliary delivery pipe 33 is unaffected and continues to deliver water into the auxiliary water pipe A3, and sprays it out through the auxiliary water pipe B31 and the side nozzles 32 on its surface. While ensuring dust suppression, it can also deflect the water to allow the personnel to pass through. After stepping on the pressure plate 41, the personnel can pass through the area.

[0035] The main delivery pipe 24 is connected to the connecting elbow 242 via a corrugated pipe 241. Both ends of the corrugated pipe 241 are fixedly connected to the main delivery pipe 24 and the connecting elbow 242, respectively. In this way, as the connecting block 42 moves the connecting elbow 242 downward, the corrugated pipe 241 can bend accordingly, thereby avoiding affecting the movement of the main delivery pipe 24 and improving the mobility of the connecting elbow 242 and the stability of water delivery.

[0036] The pressure plate 41 is connected to the base 4 via a pneumatic strut 411. The fixed end of the pneumatic strut 411 is fixed to the bottom of the base 4, and its output end is fixed to the bottom of the pressure plate 41. Several sets of pneumatic struts 411 are provided to ensure the comprehensiveness and stability of the downward pressure of the pressure plate 41. The pneumatic strut 411 is a damping pneumatic strut. By setting the damping pneumatic strut, when the pressure plate 41 moves downward under the action of downward pressure, the pneumatic strut 411 will be compressed. Since the pneumatic strut 411 is a damping pneumatic strut, when it is pressed down, it will extend the time for the pressure plate 41 to move upward and recover through damping rebound. This time is the continuous pressure. During the time it takes for the connecting block 42 to move the connecting elbow 242 upward and connect with the connecting pipe 23, it is convenient for staff to quickly pass through the area. After passing through the area, the air rod 411 pushes the foot plate 41 upward to return to the center position, so that the connecting block 42 moves the connecting elbow 242 upward to connect with the connecting pipe 23, so that water is re-entered into the connecting pipe 23 and the main water pipe B22. Under the action of water pressure, the push plate 221 is pushed upward, so that it moves the main water pipe A2 and the auxiliary water pipe B31 upward to return to the center position. The side nozzle 32 moves upward and returns to the initial position, while the top nozzle 21 can continue to spray water.

[0037] The ends of the auxiliary conveying pipe 33 and the main conveying pipe 24 furthest from the base 4 are both connected to an external water source pumping device, which pumps water with a certain pressure into the auxiliary conveying pipe 33 and the main conveying pipe 24.

[0038] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal mine cross-section roadway spraying device, comprising a frame (1), characterized in that, The frame (1) is provided with a main water pipe A (2) and two auxiliary water pipes B (31). A top nozzle (21) is installed on the main water pipe A (2), and several side nozzles (32) are installed on the auxiliary water pipes B (31). Several turning grooves (321) adapted to the side nozzles (32) are opened on opposite sides of the inner wall of the frame (1). The bottom of the frame (1) is provided with a main water pipe B (22) and an auxiliary water pipe A (3). The main water pipe A (2) and the auxiliary water pipe B (31) are connected to the main water pipe B (22) and the auxiliary water pipe A (3) respectively through a moving structure. When the main water pipe A (2) and the auxiliary water pipe B (31) are moved up and down by the moving structure, the side nozzles (32) move along the turning grooves (321) to adjust the spraying angle. The frame (1) also includes a triggering structure for triggering the moving structure.

2. The coal mine cross-section roadway spraying device according to claim 1, characterized in that: The movable structure includes a fixed block (311), which is fixedly connected to the surface of the main water pipe A (2) and the auxiliary water pipe B (31) respectively. The bottom of the main water pipe A (2) is slidably connected to the inside of the main water pipe B (22). The auxiliary water pipe B (31) is sleeved on the top of the auxiliary water pipe A (3). The bottom of the main water pipe A (2) is fixedly connected to a push plate (221).

3. A coal mine cross-section roadway spraying device according to claim 2, characterized in that: The push plate (221) is connected to the main water pipe B (22) via a spring (222).

4. A coal mine cross-section roadway spraying device according to claim 1, characterized in that: The triggering structure includes a base (4) fixedly connected to the bottom of the frame (1). A pressing plate (41) slides on the inner wall of the base (4). A connecting pipe (23) and a secondary conveying pipe (33) are fixedly connected to the surfaces of the main water pipe B (22) and the secondary water pipe A (3) respectively and are connected to them. One end of the secondary conveying pipe (33) passes through the frame (1) and the base (4). One end of the connecting pipe (23) passes through the frame (1) and is fixedly connected to a connecting block (231). A main conveying pipe (24) is fixedly connected to the surface of the base (4). The main conveying pipe (24) is connected to the connecting block (231) through a connecting elbow (242). The connecting elbow (242) can slide up and down in the connecting block (231) and switch its connection state with the connecting pipe (23). The pressing plate (41) is connected to the connecting elbow (242) through a connecting block (42).

5. A coal mine cross-section roadway spraying device according to claim 4, characterized in that: The main delivery pipe (24) is connected to the connecting elbow (242) via a corrugated pipe (241).

6. A coal mine cross-section roadway spraying device according to claim 4, characterized in that: The foot plate (41) is connected to the base (4) via a gas spring (411).

7. A coal mine cross-section roadway spraying device according to claim 6, characterized in that: The air rod (411) is a damping air rod (411).

8. A coal mine cross-section roadway spraying device according to claim 4, characterized in that: The ends of the auxiliary delivery pipe (33) and the main delivery pipe (24) away from the base (4) are both connected to an external water source pumping device.

Images