Automatic spray device for transfer point of coal conveyor and use method thereof

Abstract

The present invention belongs to the technical field of conveyors, and in particular to an automatic spray device at a transfer point of a coal conveyor and a method for using the same. In view of the problems in the prior art that the spray is often forgotten to be turned off and the nozzle is fixed for a long time and cannot effectively reduce dust, the following scheme is proposed, which includes a frame, a first conveyor belt and a second conveyor belt are arranged in the frame, and the second conveyor belt is located above the first conveyor belt, and the first conveyor belt and the second conveyor belt are used to transfer coal together; it also includes two inclined plates fixed on both sides of the top of the frame; in the present invention, the opening and closing of the injection box can be controlled by the operation and stopping of the second conveyor belt, and the operation of the spray can be automatically controlled to avoid long-term ineffective spraying, thereby avoiding rust and damage to the equipment and silt and water accumulation. In addition, during the spraying process, the second conveyor belt can also drive the rotating tube to swing back and forth and the scraper to move back and forth, thereby expanding the spraying range and the collection of moisture and coal dust.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyors, and in particular to an automatic spray device at a transfer point of a coal conveyor and a use method thereof. Background Art

[0002] Coal dust is solid particles that fly into the air during coal mining, transportation, transfer, storage and processing. It is one of the five major natural disasters in mines. At present, the sprays at each transfer point of the underground mining working face are all manual spray devices. The spray is turned on manually when the belt is turned on. Due to the complex procedures at the work site, the spray is often forgotten to be turned off after the belt stops transporting. First, the long-term ineffective spraying of the spray can easily cause equipment corrosion and damage; second, long-term spraying causes the on-site working environment to deteriorate, causing silt and water accumulation, greatly increasing the pressure on the drainage system, and ultimately greatly reducing the dust prevention efficiency; third, long-term spraying causes a waste of water resources. In addition, the nozzles are fixed for a long time and the spraying range is limited, resulting in the inability to effectively reduce some coal dust during coal mine transfer.

[0003] In view of the above problems, the present invention document proposes an automatic spray device for a transfer point of a coal conveyor and a method for using the same. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing spraying that is often forgotten to be turned off and the nozzle being fixed for a long time and unable to effectively reduce dust, and to propose an automatic spraying device for the transfer point of a coal conveyor and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An automatic spray device for a transfer point of a coal conveyor includes a frame, a first conveyor belt and a second conveyor belt are arranged in the frame, and the second conveyor belt is located above the first conveyor belt, and the first conveyor belt and the second conveyor belt cooperate to transfer coal;

[0007] It also includes two inclined plates fixed on both sides of the top of the frame, which are used to guide the sprayed water droplets and the coal dust after dust settling downward. The tops of the two inclined plates are fixedly connected to the same U-shaped frame. Two rotating tubes are rotatably connected to the U-shaped frame through a base. The bottoms of the two rotating tubes are fixedly connected to multiple atomizing nozzles. The rotating tubes and the atomizing nozzles cooperate to spray the coal.

[0008] A liquid injection box is arranged on one side of the U-shaped frame, one side of the liquid injection box is fixedly connected to a liquid inlet pipe, the liquid inlet pipe is connected to an external water source, and the other side of the liquid injection box is fixedly connected to a three-way pipe, one end of the three-way pipe is fixedly passed through the U-shaped frame, and the other two ends of the three-way pipe extend into two rotating tubes respectively and are rotatably connected to the two rotating tubes, so as to inject clean water into the rotating tubes;

[0009] A control structure, arranged on one side of the frame, for operating the second conveyor belt and controlling the opening and closing of the liquid injection box;

[0010] The swing structure is arranged on the other side of the frame and is used to drive the two rotating tubes to rotate back and forth so as to expand the spraying range;

[0011] Two groups of scraping structures are respectively arranged on the top of the two inclined plates, and are used to scrape downwards the water drops on the inclined plates and the coal dust after dust settling.

[0012] The transmission gear of the present invention is a gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a The top sealing sliding of the push rod extends into the liquid injection box and is fixedly connected to the bottom end of the closing plate, and the arc plate and the push rod are used to drive the closing plate to rise and fall, and a centrifugal structure is provided in the turntable, and the turntable drives the arc plate to move up through the centrifugal structure; one of the rotating rollers of the second conveyor belt drives the first gear to rotate through the first rotating shaft, and the first gear drives the second rotating shaft to rotate through the second gear, and the second rotating shaft and the third rotating shaft are connected through a synchronous wheel and a synchronous belt transmission, and the third rotating shaft drives the turntable to rotate. When the turntable rotates rapidly, the ball and the push plate move outward under the action of centrifugal force, and the ball and the arc plate cooperate to drive the push rod and the closing plate to move up, thereby releasing the closure of the liquid injection box, and then injecting water into the rotating tube to start the spraying operation, and then the dust reduction operation can be carried out synchronously during the transportation of the first conveyor belt and the second conveyor belt. On the contrary, when the first conveyor belt and the second conveyor belt stop running, the spraying operation is automatically stopped to avoid ineffective spraying.

[0013] The cam is an angular channel that is fixed to the side of the rotating disk and has a plurality of springs that are respectively fixed to the sides of the rotating disk and the cams, and the plurality of springs are connected to the sides of the rotating disk and the cams, respectively.

[0014] In a possible design, the swing structure includes a fourth rotating shaft rotatably arranged on the other side of the frame, one end of the fourth rotating shaft is fixedly connected to the end of one of the rotating rollers of the second conveyor belt away from the liquid injection box, the fourth rotating shaft passes through one end of the frame and is fixedly connected to a rotating disk, the side of the rotating disk deviating from the center of the circle is rotatably connected to a connecting rod through a circular axis, the sides of the two rotating tubes close to each other are fixedly connected to two connecting plates, the inner walls of the two sides of the U-shaped frame away from each other are slidably connected to guide rods through fixed blocks, the top ends of the two guide rods are fixedly connected to a frame, and the frame is located between the two rotating tubes, and the two Two pins are provided in the frame, and the four pins are fixedly connected to the corresponding connecting plates respectively. When the guide rod drives the frame to rise and fall, the rotating tube is driven to reciprocate with the cooperation of the frame and the pins. The top of the connecting rod is rotatably connected to the bottom end of one of the guide rods, so as to drive the guide rod to reciprocate up and down. One end of one of the rotating rollers of the second conveyor belt away from the liquid injection box also drives the rotating disk to rotate through the fourth rotating shaft. The rotating disk drives the frame to reciprocate up and down through the connecting rod and the guide rod. The frame drives the two rotating tubes to swing toward each other synchronously through the pins and the connecting plate, thereby expanding the spraying range of the atomizing nozzle and effectively reducing coal dust.

[0015] In a possible design, the scraping structure includes a scraper slidably arranged on the inclined surface of one side of the inclined plate, the scraper is fixedly connected to a first cross plate on a side away from the first conveyor belt, a clearance groove is arranged in the first cross plate, a rectangular block is slidably connected in the clearance groove, a plurality of tension springs are fixed to one side of the rectangular block, one end of the plurality of tension springs close to the scraper is fixedly connected to an inner wall of one side of the clearance groove, the tension spring is used to drive the rectangular block and the scraper to reset when moving up, the rectangular block is fixedly sleeved on the outer wall of the guide rod, and the bottom end of the guide rod passes through the first cross plate; when the guide rod moves up and down, the scraper can be scraped back and forth on the inclined plate through the cooperation of the rectangular block, the first cross plate and the scraper, so as to scrape water droplets and coal dust attached to the inclined plate downward.

[0016] In a possible design, a V-shaped plate is fixed in the frame, and the V-shaped plate is located below the first conveyor belt and the second conveyor belt. A plurality of sieve holes are provided at the bottom of the V-shaped plate for filtering moisture and coal dust. A collecting box is fixed at the bottom of the V-shaped plate for collecting filtered moisture. A drain pipe is fixed on one side of the collecting box, and one end of the drain pipe extends to one side of the frame for recycling water resources.

[0017] In one possible design, the diameter of the first gear is larger than the diameter of the second gear, and the diameter of the synchronous wheel on the outer wall of the second rotating shaft is larger than the diameter of the synchronous wheel on the outer wall of the third rotating shaft. Through the cooperation of the first gear, the second gear, the synchronous wheel, and the synchronous belt, the rotation speed of the third rotating shaft can be increased to make the turntable rotate quickly.

[0018] In a possible design, the push plate is fixedly connected to one end away from the third rotating shaft with a mounting sleeve, and the ball is rollingly arranged in the mounting sleeve. The cooperation between the mounting sleeve and the ball can reduce the friction between the ball and the arc plate, thereby increasing the service life of the arc plate and the ball.

[0019] The top of the two frames is fixed with the same second cross plate, the top of the second cross plate is fixedly connected with a rack, and the top of the rack slides and extends above the U-shaped frame, and the top of the U-shaped frame is rotatably connected to a rotating rod through a base, and the outer wall fixed sleeve of the rotating rod is provided with a third gear meshing with the rack, and the rack drives the rotating rod to rotate reciprocatingly through the third gear, and a worm is fixed at both ends of the rotating rod, and both sides of the U-shaped frame are rotatably connected to a rotating shaft through the base, and the outer walls of the two rotating shafts are fixed with a worm gear and a fan blade plate, and the worm gear is meshed with the worm, and the cooperation between the worm and the worm gear is used to drive the fan blade plate to reciprocate; when the frame and the guide rod move back and forth in a straight line, the frame drives the rack to move synchronously through the second cross plate, and the rack cooperates with the third gear to drive the rotating rod and the worm to rotate reciprocatingly, and the worm is meshed with the worm gear to drive the fan blade plate and the rotating shaft to swing reciprocatingly, which is used to fan the flying coal dust downward to prevent the coal dust from spreading upward to pollute the environment.

[0020] In the present application, a method for using an automatic spray device at a transfer point of a coal conveyor includes the following steps:

[0021] S1. Conveyor belt cooperative operation and coal dust control: During coal transportation, the first conveyor belt and the second conveyor belt work together, but coal dust is easily raised at the junction; the second conveyor belt is used to drive the turntable to rotate through the cooperation of the first gear and the second gear;

[0022] S2. Rotation of turntable and activation of spray system: When the turntable rotates rapidly, the centrifugal force pushes the push plate and the ball to move outward, releasing the seal of the liquid injection box, so that the water source is sprayed on the conveyor belt through the atomizing nozzle to achieve synchronous dust reduction; when the conveyor belt stops, the spraying stops to avoid ineffective spraying;

[0023] S3, Swinging of rotating tube and widening of spraying range: The rotating roller of the second conveyor belt drives the rotating disk, which drives the rotating tube to swing through the connecting rod and the guide rod, widening the spraying range and enhancing the dust reduction effect;

[0024] S4. Scraping of scraper and removal of accumulated water and coal dust: When the guide rod moves, the linked scraper scrapes back and forth on the inclined plate to remove accumulated water and coal dust to keep it clean;

[0025] S5. Treatment of accumulated water and coal dust and resource recycling: accumulated water and coal dust fall onto the V-shaped plate, and after being filtered through the sieve holes, the clean water is collected in the collection box and discharged, thus realizing resource recycling and avoiding environmental deterioration;

[0026] S6. Movement of the frame and swing of the fan blades: When the frame moves, the fan blades are driven to swing back and forth through the rack, the third gear, the worm and the worm wheel, thereby guiding the coal dust downward to prevent it from spreading and polluting the air.

[0027] Beneficial effects:

[0028] In the present invention, one end of the first rotating shaft is fixedly connected to one of the rotating rollers of the second conveyor belt, the first rotating shaft and the second rotating shaft are connected by a first gear and a second gear, the second rotating shaft and the third rotating shaft are connected by a synchronous wheel and a synchronous belt, the outer wall of the third rotating shaft is fixedly sleeved with a turntable, and a centrifugal structure is arranged in the turntable; the second conveyor belt drives the first rotating shaft to rotate, and the centrifugal structure in the turntable is driven by the transmission of the first gear, the second rotating shaft, the synchronous wheel and the synchronous belt, thereby releasing the sealing of the liquid injection box, so that dust reduction operation can be carried out synchronously when the first conveyor belt and the second conveyor belt are transporting, and conversely, when the first conveyor belt and the second conveyor belt stop running, the spraying operation is automatically stopped to avoid invalid spraying;

[0029] In the present invention, a plurality of slide grooves are provided on one side of the turntable, and a sliding block is slidably connected in the slide grooves, and a push plate is fixed on one side of the sliding block, and a ball is provided on one end of the push plate away from the third rotating shaft; when the turntable rotates, the ball and the push plate move outward under the action of centrifugal force, and the ball cooperates with the arc plate to drive the push rod and the closing plate to move up, thereby releasing the sealing of the liquid injection box and starting the spraying operation. The turntable is driven to rotate by the second conveyor belt, and the opening and closing of the liquid injection box can be automatically controlled by the operation and stop of coal transportation. Without manual operation, the spraying can be opened and closed in time, avoiding ineffective spraying, saving water resources, and avoiding the deterioration of the on-site working environment;

[0030] In the present invention, one end of the fourth rotating shaft is fixedly connected to the end of one of the rotating rollers of the second conveyor belt away from the liquid injection box, the side of the rotating disk deviating from the center of the circle is rotatably connected to one of the guide rods through a connecting rod, two connecting plates are fixed on the sides of the two rotating tubes close to each other, the top ends of the two guide rods are fixed with a frame, two pins are provided in the two frames, and the four pins are respectively fixedly connected to the corresponding connecting plates; the rotating disk drives the frame to reciprocate up and down through the connecting rod and the guide rod, and the frame drives the two rotating tubes to swing synchronously toward each other through the pins and the connecting plate, thereby expanding the spraying range of the atomizing nozzle and effectively reducing coal dust.

[0031] In the present invention, a first transverse plate is fixed on the side of the scraper away from the first conveyor belt, a rectangular block is slidably connected to the first transverse plate through a give way groove, the rectangular block is fixedly sleeved on the outer wall of the guide rod, and the bottom end of the guide rod passes through the first transverse plate; when the guide rod moves up and down, the scraper can scrape back and forth on the inclined plate through the cooperation of the rectangular block, the first transverse plate and the scraper, so as to scrape water droplets and coal dust attached to the inclined plate downwards, thereby ensuring the cleanliness of the entire frame and avoiding rust and damage to the equipment.

[0032] In the present invention, the opening and closing of the liquid injection box can be controlled by the operation and stopping of the second conveyor belt and the first conveyor belt, and then the operation of the spray can be automatically controlled to avoid long-term ineffective spraying, thereby avoiding rust and damage of equipment and silt accumulation. In addition, during the spraying process, the second conveyor belt can also drive the rotating tube to swing back and forth and the scraper to move back and forth, thereby expanding the spraying range and the collection of moisture and coal dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the three-dimensional structure of an automatic spray device for a transfer point of a coal conveyor provided in Example 1 of the present invention;

[0034] Figure 2 A schematic diagram of the front cross-sectional structure of an automatic spray device for a transfer point of a coal conveyor provided in Example 1 of the present invention;

[0035] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of an automatic spray device for a transfer point of a coal conveyor provided in Example 1 of the present invention;

[0036] Figure 4 A schematic diagram of the three-dimensional structure of an L-shaped frame, an arc-shaped plate and a turntable of an automatic spray device for a transfer point of a coal conveyor provided in Example 1 of the present invention;

[0037] Figure 5 A schematic diagram of a three-dimensional exploded structure of a third rotating shaft, a rotating disk and a curved plate of an automatic spray device for a transfer point of a coal conveyor provided in Example 1 of the present invention;

[0038] Figure 6 A schematic diagram of a three-dimensional cross-sectional structure of a turntable and an arc-shaped plate of an automatic spray device at a transfer point of a coal conveyor provided in Example 1 of the present invention;

[0039] Figure 7 A schematic diagram of a three-dimensional explosion structure of a rotating pipe, a three-way pipe and a liquid injection box of an automatic spray device for a transfer point of a coal conveyor provided in Example 1 of the present invention;

[0040] Figure 8 A schematic diagram of the three-dimensional structure of the U-shaped frame and frame of an automatic spray device for a transfer point of a coal conveyor provided in Example 1 of the present invention;

[0041] Fig. 9 A schematic diagram of a three-dimensional explosion structure of a first horizontal plate and a guide rod of an automatic spray device at a transfer point of a coal conveyor provided in Example 1 of the present invention;

[0042] Fig.10 A schematic diagram of the three-dimensional structure of a rotating disk and a guide rod of an automatic spray device at a transfer point of a coal conveyor provided in Example 2 of the present invention;

[0043] Fig.11 This is a schematic cross-sectional structural diagram of a U-shaped frame of an automatic spray device at a transfer point of a coal conveyor provided in Example 2 of the present invention.

[0044] In the figure: 1, frame; 2, first conveyor belt; 3, second conveyor belt; 4, inclined plate; 5, U-shaped frame; 6, rotating tube; 7, atomizing nozzle; 8, first rotating shaft; 9, first gear; 10, second rotating shaft; 11, second gear; 12, third rotating shaft; 13, turntable; 14, L-shaped frame; 15, slide; 16, sliding block; 17, spring; 18, push plate; 19, mounting sleeve; 20, ball; 21, liquid injection box; 22, liquid inlet pipe; 23, three-way pipe; 24, closing plate; 25, push rod ; 26. Connecting plate; 27. Pin shaft; 28. Frame; 29. ​​Guide rod; 30. Scraper; 31. First horizontal plate; 32. Give way groove; 33. Rectangular block; 34. Tension spring; 35. Fourth rotating shaft; 36. Rotating disk; 37. Connecting rod; 38. V-shaped plate; 39. Sieve hole; 40. Collecting box; 41. Drain pipe; 42. Arc plate; 43. Second horizontal plate; 44. Rack; 45. Rotating rod; 46. Third gear; 47. Rotating shaft; 48. Blade plate; 49. Worm wheel; 50. Worm. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Example 1

[0047] Reference Figure 1 and Figure 2 The automatic spray device is used in the field of dust prevention in coal transportation. First, a frame 1 is constructed. Two layers of conveyor belts are arranged inside the frame 1, namely a first conveyor belt 2 and a second conveyor belt 3. The second conveyor belt 3 is located above the first conveyor belt 2. The two layers of conveyor belts work together for the transportation of coal.

[0048] Reference Figure 1-Figure 3 Two inclined plates 4 are fixedly installed on both sides of the top of the frame 1, and a U-shaped frame 5 is fixed on the top of the two inclined plates 4. In the U-shaped frame 5, two rotating tubes 6 are connected by rotating the base, and a plurality of atomizing nozzles 7 are evenly fixedly connected to the bottom of the two rotating tubes 6. These atomizing nozzles 7 cooperate with the rotating tubes 6 to spray the coal below.

[0049] Reference Figure 3 and Figure 7 A liquid injection box 21 is provided on one side of the U-shaped frame 5, and a liquid inlet pipe 22 is fixedly connected to one side of the liquid injection box 21. The liquid inlet pipe 22 is connected to an external water source to provide clean water required for spraying; a three-way pipe 23 is fixedly connected to the other side of the liquid injection box 21, one end of the three-way pipe 23 is fixedly passed through the U-shaped frame 5, and the other two ends of the three-way pipe 23 extend into the two rotating tubes 6 respectively and are rotatably connected to the two rotating tubes 6 to realize water injection into the rotating tubes 6.

[0050] Reference Figure 3-Figure 6 The control structure includes a first rotating shaft 8, a second rotating shaft 10 and a third rotating shaft 12 which are rotatably arranged on one side of the frame 1, and the third rotating shaft 12 is located directly above the second rotating shaft 10. One end of the first rotating shaft 8 passes through the frame 1 and is fixedly connected to one of the rotating rollers of the second conveyor belt 3. The other end of the first rotating shaft 8 is fixedly connected to a first gear 9. The outer wall of the second rotating shaft 10 is fixedly sleeved with a second gear 11 which meshes with the first gear 9. The second rotating shaft 10 and the third rotating shaft 12 are connected by a synchronous wheel and a synchronous belt transmission. A rotating disk is fixedly sleeved on the outer wall of the third rotating shaft 12 13, the turntable 13 is located in the L-shaped frame 14, the L-shaped frame 14 is fixed on the frame 1, the L-shaped frame 14 is used to protect the first gear 9, the second gear 11 and the turntable 13, the liquid injection box 21 is fixed on the top of the L-shaped frame 14, one side of the L-shaped frame 14 is slidably connected with an arc plate 42, and the arc plate 42 is located above the turntable 13, and a push rod 25 is fixed on the top of the arc plate 42. A closing plate 24 for closing the liquid injection box 21 slides through the liquid injection box 21, and the top end of the push rod 25 seals and slides to extend into the liquid injection box 21 and is fixedly connected to the bottom end of the closing plate 24.

[0051] Specifically, when the turntable 13 rotates rapidly, the arc plate 42 is driven upward by the centrifugal structure inside it (details are described below), thereby driving the push rod 25 and the closing plate 24 to move upward, thereby releasing the seal on the liquid injection box 21, allowing clean water to enter the rotating tube 6 and start spraying through the atomizing nozzle 7; conversely, when the turntable 13 stops rotating, the closing plate 24 automatically descends to close the liquid injection box 21, and the atomizing nozzle 7 stops spraying.

[0052] Reference Figure 3-Figure 6 The centrifugal structure includes a plurality of slide grooves 15 arranged on the side of the turntable 13 away from the frame 1, and a sliding block 16 is slidably connected in each of the plurality of slide grooves 15. A spring 17 is fixed to a side of the plurality of sliding blocks 16 away from the third rotating shaft 12, and the other ends of the plurality of springs 17 are respectively fixedly connected to the inner wall of one side of the corresponding slide groove 15, and a push plate 18 is fixedly connected to one side of the plurality of sliding blocks 16, and the push plate 18 is slidably connected to one side of the turntable 13. A ball 20 is provided on one end of the plurality of push plates 18 away from the third rotating shaft 12, and the ball 20 cooperates with the arc plate 42. When the turntable 13 rotates rapidly, the push plate 18 and the ball 20 move outward under the action of centrifugal force, compressing the spring 17 and pushing the arc plate 42 upward.

[0053] Specifically, when the ball 20 pushes the arc plate 42 upward, the closing plate 24 is driven upward by the push rod 25 to release the closure of the liquid injection box 21. At this time, the external water source enters the liquid injection box 21 through the liquid inlet pipe 22, and then enters the two rotating tubes 6 respectively through the three-way pipe 23, and is sprayed onto the first conveyor belt 2 and the second conveyor belt 3 below through the atomizing nozzle 7, thereby realizing dust reduction operations during coal transportation.

[0054] Through the above specific implementation methods, the automatic spraying device at the transfer point of the coal conveyor of the present invention can automatically perform spraying dust reduction operations during the coal transportation process, and automatically stop when there is no transportation task, which effectively improves work efficiency and reduces ineffective spraying.

[0055] Reference Figure 7 , Figure 8 and Fig.10The swing structure includes a fourth rotating shaft 35 rotatably arranged on the other side of the frame 1. The rotating shaft is rotatably arranged on the frame through a rotating device such as a bearing to ensure that it can rotate freely. One end of the fourth rotating shaft 35 is fixedly connected to one end of one of the rotating rollers of the second conveyor belt 3 away from the injection box 21. In this way, when the second conveyor belt 3 is running, the fourth rotating shaft 35 will be driven to rotate synchronously. One end of the fourth rotating shaft 35 that passes through the frame 1 is fixedly connected to a rotating disk 36. The eccentric position of the rotating disk 36, that is, the side that deviates from the center of the circle, is rotatably connected to a connecting rod 37 through a circular shaft, so that the rotation of the rotating disk 36 will be converted In order to swing the connecting rod 37, two connecting plates 26 are fixedly connected to the sides of the two rotating tubes 6 that are close to each other, and the inner walls of the two sides of the U-shaped frame 5 that are away from each other are slidably connected to guide rods 29 through fixed blocks, so that the guide rods 29 can slide up and down in the fixed blocks. The top ends of the two guide rods 29 are fixedly connected to frames 28, and the frames 28 are located between the two rotating tubes 6. Two pins 27 are provided in the two frames 28, and the four pins 27 are fixedly connected to the corresponding connecting plates 26 respectively. The top end of the connecting rod 37 is rotatably connected to the bottom end of one of the guide rods 29, which is used to drive the guide rod 29 to reciprocate up and down.

[0056] Specifically, when the fourth rotating shaft 35 drives the rotating disk 36 to rotate, the rotating disk 36 pushes the guide rod 29 to move back and forth up and down through the connecting rod 37. Since the frame 28 is fixed to the top of the guide rod 29, and the pin 27 in the frame 28 is fixedly connected to the connecting plate 26, the up and down movement of the guide rod 29 will drive the frame 28 to rise and fall, and then drive the two rotating tubes 6 to reciprocate through the cooperation of the pin 27 and the connecting plate 26. This design enables the atomizing nozzle 7 on the rotating tube 6 to expand the spraying range and more effectively reduce the coal dust.

[0057] Reference Figure 3 , Figure 8 and Fig. 9 Next, two sets of scraping structures are respectively arranged on the top of the two inclined plates 4 to regularly scrape down the water droplets on the inclined plates 4 and the coal dust after dust settling, so as to keep the device clean and operate efficiently.

[0058] Reference Figure 3 , Figure 8 and Fig. 9The scraping structure includes a scraper 30 slidably arranged on the inclined surface of one side of the inclined plate 4. The scraper 30 is fixedly connected to a first transverse plate 31 on the side away from the first conveyor belt 2. A clearance groove 32 is provided in the first transverse plate 31. A rectangular block 33 is slidably connected in the clearance groove 32. A plurality of tension springs 34 are fixed to one side of the rectangular block 33. One end of the plurality of tension springs 34 close to the scraper 30 is fixedly connected to an inner wall of one side of the clearance groove 32. When the scraper 30 and the rectangular block 33 move upward, the tension spring 34 provides a reset force to enable them to return to their initial positions. In addition, the rectangular block 33 is also fixedly sleeved on the outer wall of the guide rod 29, and the bottom end of the guide rod 29 passes through the first transverse plate 31.

[0059] Specifically, when the guide rod 29 moves up and down, it will drive the rectangular block 33 and the first horizontal plate 31 to move synchronously, and then the scraper 30 will scrape back and forth on the inclined plate 4. This design can effectively scrape the water droplets and coal dust attached to the inclined plate 4 downward to keep the inclined plate 4 clean.

[0060] Reference Figure 1-Figure 3 A V-shaped plate 38 is fixed in the frame 1, and the V-shaped plate 38 is located below the first conveyor belt 2 and the second conveyor belt 3. A plurality of sieve holes 39 are provided at the bottom of the V-shaped plate 38 for filtering moisture and coal dust. A collecting box 40 is fixed at the bottom of the V-shaped plate 38 for collecting filtered moisture. A drain pipe 41 is fixed to one side of the collecting box 40, and one end of the drain pipe 41 extends to one side of the frame 1, so that the collected moisture can be discharged and recycled. This design not only realizes the effective separation of coal dust and moisture, but also improves the utilization rate of water resources.

[0061] Reference Figure 4 and Figure 5 In order to realize the rapid rotation of the third rotating shaft 12 and improve the working efficiency of the spray device, firstly, ensure that the diameter of the first gear 9 is designed to be larger than the diameter of the second gear 11. In this way, when the power source (such as a motor) drives the first rotating shaft 8 (not numbered in the figure) to rotate, the torque can be transmitted to the second rotating shaft 10 through the meshing transmission of the first gear 9 and the second gear 11, and the second rotating shaft 10 obtains a faster rotation speed due to the diameter difference.

[0062] Reference Figure 4 and Figure 5 , secondly, the synchronous wheel diameter of the outer wall of the second rotating shaft 10 is designed to be larger than the synchronous wheel diameter of the outer wall of the third rotating shaft 12. Subsequently, a synchronous belt is used to connect the two synchronous wheels. Due to the diameter difference, when the second rotating shaft 10 rotates at a high speed, the power is transmitted to the third rotating shaft 12 through the synchronous belt, and due to the proportional relationship of the synchronous wheel diameter, the third rotating shaft 12 will obtain a faster rotation speed than the second rotating shaft 10.

[0063] Through the above structure, the first gear 9, the second gear 11, the synchronous wheel and the synchronous belt cooperate with each other to effectively increase the rotation speed of the third shaft 12, so that the turntable 13 can rotate quickly, thereby improving the coverage and spray efficiency of the spray device.

[0064] Reference Figure 6 In order to reduce the friction between the push plate 18 and the arc plate 42 and increase the service life of both, the end of the push plate 18 away from the third rotating shaft 12 is fixedly connected with a mounting sleeve 19, and the mounting sleeve 19 is made of wear-resistant material, and a ball 20 is arranged inside the mounting sleeve 19 for rolling. The ball 20 can roll freely in the mounting sleeve 19. When the push plate 18 rotates with the third rotating shaft 12 and pushes the arc plate 42, the ball 20 replaces the direct contact surface of the push plate 18 and moves relative to the arc plate 42.

[0065] Since the rolling friction of the ball 20 is much smaller than the sliding friction of the direct contact surface, this design significantly reduces the friction between the push plate 18 and the arc plate 42, which not only improves the smoothness of the equipment operation, but also reduces wear, thereby extending the service life of the push plate 18 and the arc plate 42.

[0066] Example 2

[0067] refer to Fig.11 , improved on the basis of Example 1: in order to effectively fan the flying coal dust downward and prevent it from spreading upward to pollute the environment, first, the same second cross plate 43 is fixed to the top of the two frames 28, and the top of the second cross plate 43 is fixedly connected to a rack 44, and the top of the rack 44 slides and extends to the top of the U-shaped frame 5, and the top of the rack 44 is designed with a sliding extension part so that it can slide above the U-shaped frame 5 as the frame 28 moves.

[0068] Next, the top of the U-shaped frame 5 is rotatably connected to a rotating rod 45 through a base, and a third gear 46 meshing with the rack 44 is fixedly sleeved on the outer wall of the rotating rod 45 , and the rack 44 drives the rotating rod 45 to reciprocate through the third gear 46 .

[0069] Then, worms 50 are fixed at both ends of the rotating rod 45, and both sides of the U-shaped frame 5 are rotatably connected to the rotating shaft 47 through the base. The outer walls of the two rotating shafts 47 are fixedly sleeved with worm wheels 49 and fan blades 48, and the worm wheels 49 are meshed with the worm 50. Therefore, when the rotating rod 45 rotates, the fan blades 48 and the rotating shaft 47 are driven to reciprocate through the meshing action of the worm 50 and the worm wheel 49.

[0070] During the reciprocating linear movement of the frame 28 and the guide rod 29, the frame 28 drives the rack 44 to move synchronously through the second cross plate 43, and the movement of the rack 44 drives the third gear 46 and the rotating rod 45 to rotate reciprocatingly, and then the reciprocating swing of the fan blade 48 is realized through the meshing action of the worm 50 and the worm wheel 49. In this way, the fan blade 48 can generate a downward airflow, fanning the floating coal dust downward, and effectively preventing the coal dust from spreading upward to cause environmental pollution.

[0071] A method for using an automatic spray device at a transfer point of a coal conveyor, comprising the following steps:

[0072] S1, the first conveyor belt 2 and the second conveyor belt 3 are used to transport coal. When the coal falls from the second conveyor belt 3 onto the first conveyor belt 2, coal dust is easily raised at the junction, and one of the rotating rollers of the second conveyor belt 3 drives the first gear 9 to rotate through the first rotating shaft 8, and the first gear 9 drives the second rotating shaft 10 to rotate through the second gear 11. The second rotating shaft 10 is connected to the third rotating shaft 12 through a synchronous wheel and a synchronous belt transmission, and the third rotating shaft 12 drives the turntable 13 to rotate. Since the diameter of the first gear 9 is larger than the diameter of the second gear 11, and the diameter of the synchronous wheel on the third rotating shaft 12 is larger than the diameter of the synchronous wheel on the second rotating shaft 10, the third rotating shaft 12 drives the turntable 13 to rotate rapidly;

[0073] S2, when the turntable 13 rotates rapidly, the ball 20 and the push plate 18 move outward under the action of centrifugal force, the spring 17 is compressed, and the ball 20 cooperates with the arc plate 42 to drive the push rod 25 and the closing plate 24 to move upward, thereby releasing the seal of the liquid injection box 21. At this time, the external water source enters the two rotating tubes 6 through the liquid inlet pipe 22, the liquid injection box 21 and the three-way pipe 23, and the water is atomized by the atomizing nozzle 7 and sprayed onto the first conveyor belt 2 and the second conveyor belt 3 for dust reduction, so that the dust reduction operation can be carried out synchronously when the first conveyor belt 2 and the second conveyor belt 3 are transported. On the contrary, when the first conveyor belt 2 and the second conveyor belt 3 stop running, the atomizing nozzle 7 automatically stops the spraying operation to avoid invalid spraying;

[0074] S3. At the same time, one end of one of the rotating rollers of the second conveyor belt 3 away from the liquid injection box 21 also drives the rotating disk 36 to rotate through the fourth rotating shaft 35, and the rotating disk 36 drives the frame 28 to move up and down reciprocatingly through the connecting rod 37 and the guide rod 29. The frame 28 drives the two rotating tubes 6 to swing synchronously towards each other through the pin shaft 27 and the connecting plate 26, thereby expanding the spraying range of the atomizing nozzle 7 and effectively reducing the coal dust;

[0075] S4, when the guide rod 29 moves up and down, the scraper 30 can scrape back and forth on the inclined plate 4 through the cooperation of the rectangular block 33, the first horizontal plate 31 and the scraper 30, so as to scrape the water droplets and coal dust attached to the inclined plate 4 downward, remove the accumulated water and coal dust, and keep it clean;

[0076] S5. Excess water during the spraying process and coal dust after dust settling fall on the V-shaped plate 38, and the coal dust is filtered by the sieve holes 39. The filtered water is collected in the collection box 40 and discharged to the outside through the drainage pipe 41, which not only avoids the deterioration of the on-site working environment and the accumulation of silt and water caused by long-term spraying, but also enables water resources to be reused;

[0077] S6. When the frame 28 and the guide rod 29 move back and forth in a straight line up and down, the frame 28 drives the rack 44 to move synchronously through the second cross plate 43. The cooperation between the rack 44 and the third gear 46 drives the rotating rod 45 and the worm 50 to rotate back and forth. The worm 50 engages with the worm wheel 49 to drive the fan plate 48 and the rotating shaft 47 to swing back and forth, which is used to fan the flying coal dust downward to prevent the coal dust from spreading upward to pollute the environment.

[0078] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic spray device for transfer point of coal conveyor, characterized in that: The machine comprises a frame (1), wherein a first conveyor belt (2) and a second conveyor belt (3) are arranged in the frame (1), and the second conveyor belt (3) is located above the first conveyor belt (2), and the first conveyor belt (2) and the second conveyor belt (3) cooperate to transfer coal; It also includes two inclined plates (4) fixed on both sides of the top of the frame (1) for guiding the sprayed water droplets and the coal dust after dust settling downwards, the tops of the two inclined plates (4) are fixedly connected to the same U-shaped frame (5), the U-shaped frame (5) is rotatably connected to two rotating tubes (6) via a base, the bottoms of the two rotating tubes (6) are fixedly connected to a plurality of atomizing nozzles (7), and the rotating tubes (6) and the atomizing nozzles (7) cooperate to spray the coal; A liquid injection box (21) is arranged on one side of the U-shaped frame (5); one side of the liquid injection box (21) is fixedly connected to a liquid inlet pipe (22), the liquid inlet pipe (22) is connected to an external water source, and the other side of the liquid injection box (21) is fixedly connected to a three-way pipe (23); one end of the three-way pipe (23) is fixedly passed through the U-shaped frame (5), and the other two ends of the three-way pipe (23) respectively extend into the two rotating pipes (6) and are rotatably connected to the two rotating pipes (6) for injecting clean water into the rotating pipes (6); A control structure, arranged on one side of the frame (1), used to operate the second conveyor belt (3) and control the opening and closing of the liquid injection box (21); A swing structure, arranged on the other side of the frame (1), used to drive the two rotating tubes (6) to reciprocate and thus expand the spraying range; Two sets of scraping structures are respectively arranged on the top of the two inclined plates (4) and are used to scrape water droplets on the inclined plates (4) and coal dust after dust settling downwards.

2. The automatic spray device for transfer point of coal conveyor according to claim 1 is characterized in that: The control structure comprises a first rotating shaft (8), a second rotating shaft (10) and a third rotating shaft (12) which are rotatably arranged on one side of the frame (1), and the third rotating shaft (12) is located directly above the second rotating shaft (10); one end of the first rotating shaft (8) passes through the frame (1) and is fixedly connected to one of the rotating rollers of the second conveyor belt (3); the other end of the first rotating shaft (8) is fixedly connected to a first gear (9); the outer wall fixed sleeve of the second rotating shaft (10) is provided with a second gear (11) meshing with the first gear (9); the second rotating shaft (10) and the third rotating shaft (12) are connected by a synchronous wheel and a synchronous belt transmission; the outer wall fixed sleeve of the third rotating shaft (12) is provided with a rotating disk (13); one side of the frame (1) is fixedly connected to an L-shaped frame (14); one end of the third rotating shaft (12) is connected to the L-shaped frame (14); The L-shaped frame (14) is used to protect the first gear (9), the second gear (11) and the turntable (13); the liquid injection box (21) is fixed on the top of the L-shaped frame (14); a curved plate (42) is slidably connected to one side of the L-shaped frame (14); the curved plate (42) is located above the turntable (13); a push rod (25) is fixed on the top of the curved plate (42); a closing plate (24) for closing the liquid injection box (21) is slidably penetrated in the liquid injection box (21); the top end of the push rod (25) is sealed and slidably extended into the liquid injection box (21) and is fixedly connected to the bottom end of the closing plate (24); the curved plate (42) and the push rod (25) cooperate to drive the closing plate (24) to rise and fall; a centrifugal structure is provided in the turntable (13); the turntable (13) drives the curved plate (42) to move upward through the centrifugal structure.

3. The automatic spray device for transfer point of coal conveyor according to claim 2 is characterized in that: The centrifugal structure comprises a plurality of slide grooves (15) arranged on a side of the turntable (13) away from the frame (1), a plurality of slide grooves (15) are slidably connected with a slide block (16), a plurality of slide blocks (16) are fixed with a spring (17) on a side away from the third rotating shaft (12), the other ends of the plurality of springs (17) are respectively fixedly connected to an inner wall of one side of the corresponding slide groove (15), a plurality of slide blocks (16) are fixedly connected with a push plate (18) on one side, and the push plate (18) is slidably connected to one side of the turntable (13), the push plate (18) moves outward under the action of centrifugal force, and a plurality of push plates (18) are provided with a ball (20) on one end away from the third rotating shaft (12), and the ball (20) cooperates with the arc plate (42).

4. The automatic spray device for transfer point of coal conveyor according to claim 1 is characterized in that: The swing structure comprises a fourth rotating shaft (35) rotatably arranged on the other side of the frame (1), one end of the fourth rotating shaft (35) being fixedly connected to one end of one of the rotating rollers of the second conveyor belt (3) away from the liquid injection box (21), one end of the fourth rotating shaft (35) passing through the frame (1) being fixedly connected to a rotating disk (36), a side of the rotating disk (36) deviating from the center of the circle being rotatably connected to a connecting rod (37) via a circular axis, two sides of the two rotating tubes (6) close to each other are fixedly connected to two connecting plates (26), and the inner walls of the two sides of the U-shaped frame (5) away from each other are both slidably connected via fixed blocks. A guide rod (29) is connected, the top ends of the two guide rods (29) are fixedly connected to a frame (28), and the frame (28) is located between the two rotating tubes (6). Two pins (27) are provided in the two frames (28), and the four pins (27) are respectively fixedly connected to corresponding connecting plates (26). When the guide rod (29) drives the frame (28) to rise and fall, the rotating tube (6) is driven to reciprocate in cooperation with the frame (28) and the pins (27). The top end of the connecting rod (37) is rotatably connected to the bottom end of one of the guide rods (29) for driving the guide rod (29) to reciprocate up and down.

5. The automatic spray device for transfer point of coal conveyor according to claim 4 is characterized in that: The scraping structure comprises a scraper (30) slidably arranged on an inclined surface of one side of the inclined plate (4); a first transverse plate (31) is fixedly connected to the side of the scraper (30) away from the first conveyor belt (2); a clearance groove (32) is provided in the first transverse plate (31); a rectangular block (33) is slidably connected in the clearance groove (32); a plurality of tension springs (34) are fixed to one side of the rectangular block (33); one end of the plurality of tension springs (34) close to the scraper (30) is fixedly connected to the inner wall of one side of the clearance groove (32); the tension spring (34) is used to drive the rectangular block (33) and the scraper (30) to reset when moving upward; the rectangular block (33) is fixedly sleeved on the outer wall of the guide rod (29), and the bottom end of the guide rod (29) passes through the first transverse plate (31).

6. The automatic spray device for transfer point of coal conveyor according to claim 1, characterized in that: A V-shaped plate (38) is fixed inside the frame (1), and the V-shaped plate (38) is located below the first conveyor belt (2) and the second conveyor belt (3). A plurality of sieve holes (39) are provided at the bottom of the V-shaped plate (38) for filtering water and coal dust. A collecting box (40) is fixed at the bottom of the V-shaped plate (38) for collecting filtered water. A drainage pipe (41) is fixed on one side of the collecting box (40), and one end of the drainage pipe (41) extends to one side of the frame (1) for recycling water resources.

7. The automatic spray device for transfer point of coal conveyor according to claim 2, characterized in that: The diameter of the first gear (9) is greater than the diameter of the second gear (11), and the diameter of the synchronous wheel on the outer wall of the second rotating shaft (10) is greater than the diameter of the synchronous wheel on the outer wall of the third rotating shaft (12). The rotation speed of the third rotating shaft (12) can be increased by cooperating with the first gear (9), the second gear (11), the synchronous wheel, and the synchronous belt.

8. The automatic spray device for transfer point of coal conveyor according to claim 3 is characterized in that: One end of the push plate (18) away from the third rotating shaft (12) is fixedly connected to a mounting sleeve (19), and a ball (20) is rollingly arranged in the mounting sleeve (19). The cooperation between the mounting sleeve (19) and the ball (20) can reduce the friction between the ball (20) and the arc plate (42).

9. The automatic spray device for transfer point of coal conveyor according to claim 4, characterized in that: The tops of the two frames (28) are fixed with a second horizontal plate (43), the top of the second horizontal plate (43) is fixedly connected with a rack (44), and the top of the rack (44) slides and extends to the top of the U-shaped frame (5), the top of the U-shaped frame (5) is rotatably connected with a rotating rod (45) through a base, and the outer wall of the rotating rod (45) is fixedly sleeved with a third gear (46) meshing with the rack (44), and the rack (44) is rotated by the third gear (46) drives the rotating rod (45) to rotate back and forth, and worms (50) are fixed at both ends of the rotating rod (45), and both sides of the U-shaped frame (5) are rotatably connected to the rotating shaft (47) through the base, and the outer walls of the two rotating shafts (47) are fixedly sleeved with worm wheels (49) and fan blades (48), and the worm wheels (49) are meshed with the worms (50), and the cooperation between the worms (50) and the worm wheels (49) is used to drive the fan blades (48) to rotate back and forth.

10. The method for using the automatic spray device at the transfer point of a coal conveyor according to claim 9, characterized in that: The following steps are involved: S1. Conveyor belt cooperative operation and coal dust control: During the coal transportation process, the first conveyor belt (2) and the second conveyor belt (3) cooperate with each other, but coal dust is easily raised at the junction; the second conveyor belt (3) is used to drive the turntable (13) to rotate through the cooperation of the first gear (9) and the second gear (11); S2, rotating the turntable and activating the spraying system: when the turntable (13) rotates rapidly, the centrifugal force pushes the push plate (18) and the ball (20) outward, releasing the seal of the liquid injection box (21), so that the water source is sprayed on the conveyor belt through the atomizing nozzle (7), thereby achieving synchronous dust reduction; when the conveyor belt stops, the spraying stops, avoiding ineffective spraying; S3, swinging of the rotating tube and widening of the spraying range: the rotating roller of the second conveyor belt (3) drives the rotating disk (36), which drives the rotating tube (6) to swing through the connecting rod (37) and the guide rod (29), thereby widening the spraying range and enhancing the dust reduction effect; S4, scraping and removal of accumulated water and coal dust: when the guide rod (29) moves, the linkage scraper (30) scrapes back and forth on the inclined plate (4) to remove accumulated water and coal dust to keep it clean; S5. Treatment of accumulated water and coal dust and resource recycling: accumulated water and coal dust fall onto the V-shaped plate (38), and after being filtered through the sieve holes (39), clean water is collected in the collection box (40) and discharged, thus realizing resource recycling and avoiding environmental deterioration; S6, frame movement and fan blade swing: when the frame (28) moves, the fan blade (48) is driven to swing back and forth through the rack (44), the third gear (46), the worm (50) and the worm wheel (49), thereby guiding the coal dust downward to prevent it from spreading and polluting the air.

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