A device for suppressing dust lifting during unloading at a wharf

Abstract

This invention relates to a dust suppression device for unloading cargo at a dock, comprising a cargo rack, an inner sliding plate slidably connected to the upper surface of the cargo rack, a side support frame fixedly installed on the upper surface of the cargo rack and at the edge of the inner sliding plate, a sliding ring slidably connected to the surface of the side support frame, an outer sleeve fixedly installed inside the side support frame, a guide shaft slidably connected inside the outer sleeve, an inner fixing ring fixedly installed at the upper end of the guide shaft, the outer surface of the inner fixing ring fixedly connected to the sliding ring, an atomizing nozzle provided on the side of the sliding ring, the height of the sliding ring increasing as the material inside the inner sliding plate increases, and a fixing plate fixedly installed on the upper end of the sliding ring facing the inner sliding plate; this solution prevents dust from escaping from the top, comprehensively suppressing dust generated during material transportation, protecting the environment while reducing dust waste.

Description

Technical Field

[0001] This invention relates to a dust suppression device, specifically a dust suppression device for unloading cargo at a dock, and belongs to the field of dock unloading technology. Background Technology

[0002] During the unloading of materials at the dock, a windless environment is usually selected, and methods such as... Figure 1 The unloading method shown involves ship a moored to the side of the dock, with conveyor belt b transferring the material from ship a to a designated location c. Simultaneously, the collision of materials (such as mineral powder and coal) with the top of the sand pile c during transport generates significant amounts of coal and mineral dust, which is the primary cause of dust pollution during unloading. Existing dust suppression devices typically have a fixed height, unable to adjust in real-time as the material height increases. As the material height increases with the unloading progress, the sprayed dust-suppressing water mist cannot accurately reach the top of the material. Setting up a vertical water mist wall not only wastes water but also results in higher moisture content in the lower layers, leading to material loss. Furthermore, dust nets are required to cover the material when it reaches a designated height to prevent wind and rain damage. Existing manual dust net covering methods are cumbersome. Therefore, we propose a dock unloading dust suppression device. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by providing a dust suppression device for dock unloading, which effectively solves the problems in the background art: Existing dust suppression devices are typically fixed in height during use and cannot adjust in real time as the material height increases. As the material height increases with the unloading progress, the sprayed dust-suppressing water mist cannot accurately reach the top of the material. Setting up a vertical water mist wall not only wastes water but also results in excessive moisture in the lower layer of material, leading to material loss. Furthermore, when the material reaches a designated height, it needs to be covered with dustproof netting to prevent it from being blown away by wind and rain; the existing method of manually covering the material with dustproof netting is cumbersome.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: A dust suppression device for unloading cargo at a dock includes a cargo rack. An inner sliding plate is slidably connected to the upper surface of the cargo rack. A side support frame is fixedly installed on the upper surface of the cargo rack and at the edge of the inner sliding plate. A sliding ring is slidably connected to the surface of the side support frame. An outer sleeve is fixedly installed inside the side support frame. A guide shaft is slidably connected inside the outer sleeve. An inner fixing ring is fixedly installed at the upper end of the guide shaft. The outer surface of the inner fixing ring is fixedly connected to the sliding ring. An atomizing nozzle is provided on the side of the sliding ring. The height of the sliding ring increases with the increase of material inside the inner sliding plate. A fixing plate is fixedly installed on the side of the upper end of the sliding ring facing the inner sliding plate. A fixing rod is fixedly installed at the bottom of the fixing plate. A sliding ring is slidably connected to the surface of the fixing rod. A dustproof net is fixedly installed between the four sliding rings. A transmission pipe is fixedly installed on the side of the cargo rack. The output end of the transmission pipe is connected to the atomizing nozzle.

[0005] A further improvement of the present invention is that a fixing frame is fixedly installed on the upper end of the side of the side support frame facing the inward sliding plate, a rotating shaft is rotatably connected to the bottom of the end of the fixing frame away from the side support frame, a supporting base is fixedly installed on the side of the rotating shaft away from the side support frame, a connecting base is fixedly installed on the side of the rotating shaft away from the supporting base, a compression spring is fixedly installed between the connecting base and the fixing frame, the bottom position of the connecting base matches the sliding ring, and the position of the sliding ring matches the supporting base.

[0006] A further improvement of the present invention is that a sliding groove is provided on the surface of the sliding ring, the sliding groove is slidably connected to the side support frame, a guide shaft is fixedly installed at the bottom of the sliding ring, a piston is fixedly installed at the bottom end of the guide shaft, and an inner air chamber is provided inside the outer sleeve, and the piston slides inside the inner air chamber.

[0007] A further improvement of the present invention is that the upper surface of the shelf is provided with a bottom groove, the inner slide slide slides inside the bottom groove, an air storage chamber is fixedly installed at the bottom of the bottom groove, a connecting rod is fixedly installed at the bottom of the inner slide slide, a second piston is fixedly installed at the bottom of the connecting rod, a return spring is fixedly installed at the bottom of the second piston, the bottom end of the return spring is fixedly connected to the bottom of the air storage chamber, and the second piston slides inside the air storage chamber.

[0008] A further improvement of the present invention is that a connecting pipe is fixedly installed at the output end of the gas storage chamber, and the output end of the connecting pipe is connected to the bottom of the outer sleeve.

[0009] A further improvement of the present invention is that there is a gap between the bottom end of the fixing rod and the upper surface of the shelf, and the gap between the bottom end of the fixing rod and the upper surface of the shelf is adapted to the height of the sliding ring.

[0010] A further improvement of the present invention is that a rotary knob is rotatably connected to the surface of the sliding ring, an internal gear ring is fixedly installed on the inner surface of the atomizing nozzle, an inner groove is opened inside the sliding ring, the internal gear ring rotates inside the sliding ring, and a rotating gear is fixedly installed at the output end of the rotary knob, the rotating gear meshes with the internal gear ring for transmission.

[0011] A further improvement of the present invention is a dust suppression device for unloading cargo at a dock, the method of which is as follows:

[0012] A: The set-up goods rack can move on the ground, and the materials are transported to the inside of the inner slide via conveyor belt b. A side support frame is installed on the upper surface of the goods rack and at the edge of the inner slide. A sliding ring is slidably connected to the surface of the side support frame. An atomizing nozzle is installed on the side of the sliding ring facing the inner slide. The atomizing nozzle is connected to an external water source through a transmission pipe. The atomizing nozzle sprays atomized water to suppress dust. The dustproof net at the upper end of the side support frame blocks the dust from escaping from the top, so as to comprehensively suppress the dust generated by material transportation, protect the environment and reduce dust waste.

[0013] B: A connecting rod is fixedly installed at the bottom of the inner slide plate, and a second piston is fixedly installed at the bottom of the connecting rod. The bottom of the second piston is fixed to the bottom of the air storage chamber through a return spring. The second piston slides inside the air storage chamber. The output end of the air storage chamber is connected to the outer sleeve through a connecting pipe. When the sand is unloaded, the material inside the inner slide plate increases, and the height of the material increases with the increase of the material. In this way, during the material unloading process, the second piston slides downward inside the air storage chamber. The stored gas inside the air storage chamber enters the interior of the outer sleeve through the connecting pipe as the second piston slides down. The increase of gas inside the outer sleeve pushes the first piston to slide inside the inner air chamber, so as to push the whole consisting of the first piston, guide shaft, sliding ring and atomizing nozzle to rise in height as the material is unloaded and the material increases, so that the height of the atomizing nozzle corresponds to the highest point of the material height in real time, so that the spray position of the atomizing nozzle always corresponds to the highest point of collision of the material, thus avoiding water waste and preventing material loss with the water flow.

[0014] C: A fixed frame is fixedly installed on the upper end of the side support frame facing the inner slide plate. The bottom of the fixed frame is rotatably connected to a rotating shaft. A support base and a connecting base are installed on both sides of the rotating shaft. The connecting base is connected to the fixed frame through a compression spring. When the sliding ring moves to the highest point, the sliding ring squeezes the connecting base, causing the rotating shaft, support base, and connecting base to rotate. This releases the support base from limiting the sliding ring. Under the action of gravity, the dustproof net and the sliding ring move down along the fixed rod, allowing the dustproof net to quickly cover the outer edge of the material pile. This allows for rapid coverage of the material pile after unloading. At the same time, the material pile is positioned at a suitable height for the dustproof net to accurately cover the material, thus avoiding dust blown onto the material pile by the wind after unloading.

[0015] D: There is a certain gap between the bottom of the fixed rod and the upper surface of the goods rack. This gap is adapted to the height of the sliding ring. After the dust net is covered, the sliding ring is in the position of being disengaged from the fixed rod. This makes it easy for the user to lift the dust net. By rotating the knob on the upper surface of the sliding ring, the knob drives the rotating gear to rotate. The rotating gear meshes with the internal gear ring on the inner surface of the atomizing nozzle, thereby driving the atomizing nozzle to rotate. After unloading, the spraying direction of the atomizing nozzle can be changed to suppress dust in other positions on the dock.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This invention features a movable goods rack that moves on the ground, transporting materials via conveyor belt b to the interior of the inner slide plate. A side support frame is installed on the upper surface of the goods rack, located at the edge of the inner slide plate. A sliding ring is slidably connected to the surface of the side support frame. An atomizing nozzle is installed on the side of the sliding ring facing the inner slide plate. The atomizing nozzle is connected to an external water source through a transmission pipe, spraying atomized water to suppress dust. A dustproof net at the upper end of the side support frame blocks dust from escaping from the upper side, thus comprehensively suppressing dust generated during material transportation, protecting the environment and reducing dust waste.

[0018] 2. A connecting rod is fixedly installed at the bottom of the inner slide plate, and a second piston is fixedly installed at the bottom of the connecting rod. The bottom of the second piston is fixed to the bottom of the air storage chamber by a return spring. The second piston slides inside the air storage chamber. The output end of the air storage chamber is connected to the outer sleeve through a connecting pipe. When sand is unloaded, the material inside the inner slide plate increases, and the height of the material increases with the increase of the material. In this way, during the material unloading process, the second piston slides downward inside the air storage chamber. The stored gas inside the air storage chamber enters the interior of the outer sleeve through the connecting pipe as the second piston slides down. The increase of gas inside the outer sleeve pushes the first piston to slide inside the inner air chamber, so as to push the whole assembly consisting of the first piston, guide shaft, sliding ring and atomizing nozzle to rise in height with the increase of material unloading, so that the height of the atomizing nozzle corresponds to the highest point of the material height in real time, so that the spray position of the atomizing nozzle always corresponds to the highest point of collision of the material, thus avoiding water waste and preventing material loss with the water flow.

[0019] 3. A fixed frame is fixedly installed on the upper end of the side support frame facing the inner slide plate. The bottom of the fixed frame is rotatably connected to a rotating shaft. A support base and a connecting base are installed on both sides of the rotating shaft, and the connecting base is connected to the fixed frame through a compression spring. When the sliding ring moves to the highest point, the sliding ring squeezes the connecting base, causing the rotating shaft, support base, and connecting base to rotate. This releases the support base from limiting the sliding ring. Under the action of gravity, the dustproof net and the sliding ring move down along the fixed rod, allowing the dustproof net to quickly cover the outer edge of the material pile. This allows for rapid coverage of the material pile after unloading, while ensuring the material pile is at a suitable height for the dustproof net to accurately cover the material and prevent dust from being blown onto the material pile after unloading.

[0020] 4. There is a certain gap between the bottom of the fixing rod and the upper surface of the shelf. This gap is adapted to the height of the sliding ring. After the dust net is covered, the sliding ring is in the position of being disengaged from the fixing rod, which makes it easy for the user to lift the dust net.

[0021] 5. By rotating the knob on the upper surface of the sliding ring, the rotating knob drives the rotating gear to rotate. The rotating gear meshes with the internal gear ring on the inner surface of the atomizing nozzle, thereby driving the atomizing nozzle to rotate. After unloading, the spraying direction of the atomizing nozzle can be changed to suppress dust in other locations on the dock. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the applicable unloading scenario for the dust suppression device for dock unloading according to the present invention.

[0023] Figure 2 This is a schematic diagram of the overall structure of a dock unloading dust suppression device according to the present invention.

[0024] Figure 3 This is a schematic diagram of the side support frame of a dust suppression device for unloading cargo at a dock, according to the present invention.

[0025] Figure 4 This is a schematic diagram of the connection structure of the fixed frame, supporting base, connecting base and compression spring of the dust suppression device for unloading cargo at the dock according to the present invention.

[0026] Figure 5 This is a schematic diagram of the connection structure of the outer sleeve, guide shaft and sliding ring of a dock unloading dust suppression device according to the present invention.

[0027] Figure 6 This is a schematic diagram of the connection structure between the cargo rack and the inner sliding plate of a dock unloading dust suppression device according to the present invention.

[0028] Figure 7 This is a schematic diagram of the connection structure between the dustproof net and the sliding ring of a dust suppression device for unloading cargo at a dock, according to the present invention.

[0029] Figure 8 This is a schematic cross-sectional view of the connection between the cargo rack and the inner sliding plate of a dock unloading dust suppression device according to the present invention.

[0030] Figure 9 This is a cross-sectional schematic diagram showing the connection between the sliding ring and the atomizing nozzle of a dust suppression device for unloading cargo at a dock according to the present invention.

[0031] In the diagram: 1. Shelf; 2. Inner slide plate; 3. Side support frame; 4. Outer sleeve; 5. Sliding ring; 6. Inner fixing ring; 7. Fixing plate; 8. Dustproof net bag; 9. Sliding ring; 10. Fixing rod; 11. Atomizing nozzle; 12. Fixing frame; 13. Transmission pipe; 14. Rotating knob; 15. Rotating shaft; 16. Support base frame; 17. Connecting base frame; 18. Compression spring; 19. Inner air chamber; 20. Piston No. 1; 21. Guide shaft; 22. Sliding groove; 23. Connecting rod; 24. Piston No. 2; 25. Bottom sliding groove; 26. Return spring; 27. Air storage chamber; 28. Connecting pipe; 29. ​​Inner gear ring; 30. Rotating gear; 31. Inner groove. Detailed Implementation

[0032] To enhance understanding of the present invention, the embodiments will be described in detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] like Figure 2 , 3As shown in Figures 4, 5, and 6, a dust suppression device for unloading cargo at a dock includes a cargo rack 1. An inner slide plate 2 is slidably connected to the upper surface of the cargo rack 1. A side support frame 3 is fixedly installed on the upper surface of the cargo rack 1 and at the edge of the inner slide plate 2. A sliding ring 5 is slidably connected to the surface of the side support frame 3. An outer sleeve 4 is fixedly installed inside the side support frame 3. A guide shaft 21 is slidably connected inside the outer sleeve 4. An inner fixing ring 6 is fixedly installed at the upper end of the guide shaft 21. The outer surface of the inner fixing ring 6 is fixedly connected to the sliding ring 5. An atomizing nozzle 11 is provided on the side of the sliding ring 5. The height of the sliding ring 5 increases as the material inside the inner slide plate 2 increases. A fixing plate 7 is fixedly installed on the side of the upper end of the sliding ring 5 facing the inner slide plate 2. A fixing rod 10 is fixedly installed at the bottom of the fixing plate 7. A sliding ring 9 is slidably connected to the surface of the fixing rod 10. A dustproof net bag 8 is fixedly installed between the four sliding rings 9. A transmission pipe 13 is fixedly installed on the side of the cargo rack 1. The output end of the transmission pipe 13 is connected to the atomizing nozzle 11.

[0035] Specifically, such as Figure 5 and 6 As shown, the surface of the sliding ring 5 is provided with a sliding groove 22, which is slidably connected to the side support frame 3. A guide shaft 21 is fixedly installed at the bottom of the sliding ring 5, and a piston 20 is fixedly installed at the bottom end of the guide shaft 21. An inner air chamber 19 is provided inside the outer sleeve 4, and the piston 20 slides inside the inner air chamber 19.

[0036] Specifically, such as Figure 6 and 8 As shown, the upper surface of the shelf 1 is provided with a bottom slide groove 25, the inner slide plate 2 slides inside the bottom slide groove 25, the bottom of the bottom slide groove 25 is fixedly installed with an air storage chamber 27, the bottom of the inner slide plate 2 is fixedly installed with a connecting rod 23, the bottom of the connecting rod 23 is fixedly installed with a second piston 24, the bottom of the second piston 24 is fixedly installed with a return spring 26, the bottom end of the return spring 26 is fixedly connected to the bottom of the air storage chamber 27, and the second piston 24 slides inside the air storage chamber 27.

[0037] Specifically, such as Figure 8 As shown, a connecting pipe 28 is fixedly installed at the output end of the gas storage chamber 27, and the output end of the connecting pipe 28 is connected to the bottom of the outer sleeve 4.

[0038] Specifically, such as Figure 9 As shown, a rotary knob 14 is rotatably connected to the surface of the sliding ring 5, and an internal gear ring 29 is fixedly installed on the inner surface of the atomizing nozzle 11. An inner groove 31 is opened inside the sliding ring 5, and the internal gear ring 29 rotates inside the sliding ring 5. A rotating gear 30 is fixedly installed at the output end of the rotary knob 14, and the rotating gear 30 meshes with the internal gear ring 29 for transmission.

[0039] This embodiment enables the following: the product rack 1 can move on the ground, transporting materials via conveyor belt b to the interior of the inner slide plate 2. A side support frame 3 is installed on the upper surface of the product rack 1, located at the edge of the inner slide plate 2. A sliding ring 5 is slidably connected to the surface of the side support frame 3. An atomizing nozzle 11 is installed on the side of the sliding ring 5 facing the inner slide plate 2. The atomizing nozzle 11 is connected to an external water source through a transmission pipe 13, spraying atomized water to suppress dust. Meanwhile, a dustproof net 8 at the upper end of the side support frame 3 blocks the dust from escaping from the upper side, thus comprehensively suppressing the dust generated during material transportation. To protect the environment and reduce dust waste, a connecting rod 23 is fixedly installed at the bottom of the inner slide plate 2. A second piston 24 is fixedly installed at the bottom end of the connecting rod 23. The bottom of the second piston 24 is fixed to the bottom of the air storage chamber 27 via a return spring 26. The second piston 24 slides inside the air storage chamber 27. The output end of the air storage chamber 27 is connected to the outer sleeve 4 via a connecting pipe 28. When sand unloading begins, the material inside the inner slide plate 2 increases, and the height of the material increases with the increase of the material. Thus, during the material unloading process, the second piston 24 slides downward inside the air storage chamber 27. As the second piston 24 slides down, the stored gas enters the outer sleeve 4 through the connecting pipe 28. The increased gas volume inside the outer sleeve 4 pushes the first piston 20 to slide inside the inner gas chamber 19. This causes the entire assembly of the first piston 20, guide shaft 21, sliding ring 5, and atomizing nozzle 11 to rise in height as more material is unloaded. This ensures that the height of the atomizing nozzle 11 corresponds to the highest point of the material height in real time, and that the spray position of the atomizing nozzle 11 always corresponds to the highest point of material transport. This avoids water waste and material loss with the water flow. At the bottom of the fixed rod 10... There is a certain gap between the end and the upper surface of the goods rack 1. This gap is adapted to the height of the sliding ring 9. After the dust net bag 8 is covered, the sliding ring 9 is in the position of being disengaged from the fixed rod 10. This makes it easy for the user to lift the dust net bag 8. By rotating the upper surface of the sliding ring 5 to connect the rotating knob 14, the rotating knob 14 drives the rotating gear 30 to rotate. The rotating gear 30 meshes with the inner tooth ring 29 on the inner surface of the atomizing nozzle 11, thereby driving the atomizing nozzle 11 to rotate. After the unloading is completed, the spraying direction of the atomizing nozzle 11 can be changed to suppress dust in other positions on the dock.

[0040] Example 2

[0041] This embodiment is an implementation method that adds a dustproof net bag 8 to the basis of embodiment 1: as follows Figure 2 , 3As shown in Figures 4 and 7, a fixed frame 12 is fixedly installed on the upper end of the side of the side support frame 3 facing the inner slide plate 2. A rotating shaft 15 is rotatably connected to the bottom of the end of the fixed frame 12 away from the side support frame 3. A support base frame 16 is fixedly installed on the side of the rotating shaft 15 away from the side support frame 3. A connecting base frame 17 is fixedly installed on the side of the rotating shaft 15 away from the support base frame 16. A compression spring 18 is fixedly installed between the connecting base frame 17 and the fixed frame 12. The bottom position of the connecting base frame 17 matches the sliding ring 5. The position of the sliding ring 9 matches the support base frame 16. There is a gap between the bottom end of the fixed rod 10 and the upper surface of the shelf 1. The gap between the bottom end of the fixed rod 10 and the upper surface of the shelf 1 is adapted to the height of the sliding ring 9.

[0042] This embodiment achieves the following: A fixed frame 12 is fixedly installed on the upper end of the side support frame 3 facing the inner slide plate 2. The bottom of the fixed frame 12 is rotatably connected to the rotating shaft 15. A support base frame 16 and a connecting base frame 17 are respectively installed on both sides of the rotating shaft 15. The connecting base frame 17 is connected to the fixed frame 12 through a compression spring 18. When the sliding ring 5 moves to the highest point, the sliding ring 5 squeezes the connecting base frame 17, causing the rotating shaft 15, the support base frame 16, and the connecting base frame 17 to rotate. This causes the support base frame 16 to release the limiting position on the sliding ring 9. In this way, the dustproof net bag 8 and the sliding ring 9 move down along the fixed rod 10 under the action of gravity, so that the dustproof net bag 8 can quickly cover the outer edge of the material pile. This allows for rapid coverage of the material pile after unloading. At the same time, the material pile is located at a suitable height for the dustproof net bag 8, so that the dustproof net bag 8 can accurately cover the material and avoid dust caused by wind blowing on the material pile after unloading.

[0043] It should be noted that this invention is a dust suppression device for unloading cargo at a dock. In use, the device is first moved to a suitable position. The cargo rack 1 is movable on the ground, and materials are transported via conveyor belt b to the interior of the inner slide plate 2. A side support frame 3 is installed on the upper surface of the cargo rack 1, located at the edge of the inner slide plate 2. A sliding ring 5 is slidably connected to the surface of the side support frame 3. An atomizing nozzle 11 is installed on the side of the sliding ring 5 facing the inner slide plate 2. The atomizing nozzle 11 is connected to an external water source through a transmission pipe 13. The atomizing nozzle 11 sprays atomized water to suppress dust. Meanwhile, a dustproof net 8 at the upper end of the side support frame 3 blocks the dust from escaping from the upper side, thus comprehensively suppressing dust generated during material transportation, protecting the environment while reducing dust waste. A connecting rod 23 is fixedly installed at the bottom of the slide plate 2. A second piston 24 is fixedly installed at the bottom end of the connecting rod 23. The bottom of the second piston 24 is fixed to the inner bottom of the air storage chamber 27 by a return spring 26. The second piston 24 slides inside the air storage chamber 27. The output end of the air storage chamber 27 is connected to the outer sleeve 4 through a connecting pipe 28. When the sand is unloading begins, the material inside the inner slide plate 2 increases, and the height of the material increases with the increase of the material. Thus, during the material unloading process, the second piston 24 slides downward inside the air storage chamber 27. The stored gas inside the air storage chamber 27 enters the interior of the outer sleeve 4 through the connecting pipe 28 as the second piston 24 slides down. The increase in gas inside the outer sleeve 4 pushes the first piston 20 to slide inside the inner air chamber 19, thereby pushing the first piston 20 to slide. The piston 20, guide shaft 21, sliding ring 5, and atomizing nozzle 11 form a unit that increases in height as material is unloaded, so that the height of the atomizing nozzle 11 corresponds to the highest point of the material height in real time. This ensures that the spraying position of the atomizing nozzle 11 always corresponds to the highest point of material transport, preventing water waste and material loss with the water flow. A fixing frame 12 is fixedly installed on the upper end of the side support frame 3 facing the inner slide plate 2. The bottom of the fixing frame 12 is rotatably connected to a rotating shaft 15. A support base 16 and a connecting base 17 are respectively installed on both sides of the rotating shaft 15. The connecting base 17 is connected to the fixing frame 12 through a compression spring 18. When the sliding ring 5 moves to its highest point, the sliding ring 5 compresses the connecting base 17. Rotating the rotating shaft 15, supporting base 16, and connecting base 17 releases the supporting base 16 from its limiting position on the sliding ring 9. Under gravity, the dustproof net bag 8 and the sliding ring 9 move downwards along the fixed rod 10, allowing the dustproof net bag 8 to quickly cover the outer edge of the material pile. This ensures rapid coverage of the material pile after unloading, while maintaining the material pile at a suitable height for the dustproof net bag 8 to accurately cover the material and prevent dust from being blown onto the pile after unloading. A certain gap exists between the bottom of the fixed rod 10 and the upper surface of the shelf 1, matching the height of the sliding ring 9. After the dustproof net bag 8 has covered the material, the sliding ring 9 is disengaged from the fixed rod 10, making it easy for the user to lift the dustproof net bag 8.By rotating the knob 14 connected to the upper surface of the sliding ring 5, the knob 14 drives the rotating gear 30 to rotate. The rotating gear 30 meshes with the internal gear ring 29 on the inner surface of the atomizing nozzle 11, thereby driving the atomizing nozzle 11 to rotate. After unloading, the spraying direction of the atomizing nozzle 11 can be changed to suppress dust in other locations on the dock.

[0044] It should be noted that the above embodiments are not intended to limit the scope of protection of the present invention. Equivalent transformations or substitutions made based on the above technical solutions all fall within the scope of protection of the claims of the present invention.

Claims

1. A dust suppression device for unloading cargo at a dock, characterized in that, The product includes a shelf with an inner sliding plate slidably connected to its upper surface. A side support frame is fixedly installed on the upper surface of the shelf and along the edge of the inner sliding plate. A sliding ring is slidably connected to the surface of the side support frame. An outer sleeve is fixedly installed inside the side support frame. A guide shaft is slidably connected inside the outer sleeve. An inner fixing ring is fixedly installed at the upper end of the guide shaft. The outer surface of the inner fixing ring is fixedly connected to the sliding ring. An atomizing nozzle is provided on the side of the sliding ring. The height of the sliding ring increases as the amount of material inside the inner sliding plate increases. A fixing plate is fixedly installed on the side of the upper end of the sliding ring facing the inner sliding plate. A fixing rod is fixedly installed at the bottom of the fixing plate. A sliding ring is slidably connected to the surface of the fixing rod. A dustproof net is fixedly installed between the four sliding rings. A transmission pipe is fixedly installed on the side of the shelf. The output end of the transmission pipe is connected to the atomizing nozzle. A fixed frame is fixedly installed on the upper end of the side of the side support frame facing the inward slide plate. A rotating shaft is rotatably connected to the bottom of the fixed frame at the end away from the side support frame. A support base is fixedly installed on the side of the rotating shaft away from the side support frame. A connecting base is fixedly installed on the side of the rotating shaft away from the support base. A compression spring is fixedly installed between the connecting base and the fixed frame. The bottom position of the connecting base matches the sliding ring. The position of the sliding ring matches the support base.

2. The dock unloading dust suppression device according to claim 1, characterized in that, The sliding ring has a sliding groove on its surface, which is slidably connected to the side support frame. A guide shaft is fixedly installed at the bottom of the sliding ring, and a piston is fixedly installed at the bottom end of the guide shaft. An inner air chamber is opened inside the outer sleeve, and the piston slides inside the inner air chamber.

3. The dock unloading dust suppression device according to claim 2, characterized in that, The upper surface of the shelf is provided with a bottom slide groove. The inner slide slides inside the bottom slide groove. An air storage chamber is fixedly installed at the bottom of the bottom slide groove. A connecting rod is fixedly installed at the bottom of the inner slide slide. A second piston is fixedly installed at the bottom of the connecting rod. A return spring is fixedly installed at the bottom of the second piston. The bottom end of the return spring is fixedly connected to the bottom of the air storage chamber. The second piston slides inside the air storage chamber.

4. The dock unloading dust suppression device according to claim 3, characterized in that, A connecting pipe is fixedly installed at the output end of the gas storage chamber, and the output end of the connecting pipe is connected to the bottom of the outer sleeve.

5. The dock unloading dust suppression device according to claim 4, characterized in that, The sliding ring is rotatably connected to a rotary knob, and an internal gear ring is fixedly installed on the inner surface of the atomizing nozzle. An inner groove is opened inside the sliding ring, and the internal gear ring rotates inside the sliding ring. A rotating gear is fixedly installed at the output end of the rotary knob, and the rotating gear meshes with the internal gear ring for transmission.

6. The dock unloading dust suppression device according to any one of claims 1-5, characterized in that, Its usage method is as follows: A: The set-up goods rack can move on the ground, and the materials are transported to the inside of the inner slide via conveyor belt b. A side support frame is installed on the upper surface of the goods rack and at the edge of the inner slide. A sliding ring is slidably connected to the surface of the side support frame. An atomizing nozzle is installed on the side of the sliding ring facing the inner slide. The atomizing nozzle is connected to an external water source through a transmission pipe. The atomizing nozzle sprays atomized water to suppress dust. The dustproof net at the upper end of the side support frame blocks the dust from escaping from the top, so as to comprehensively suppress the dust generated by material transportation, protect the environment and reduce dust waste. B: A connecting rod is fixedly installed at the bottom of the inner slide plate, and a second piston is fixedly installed at the bottom of the connecting rod. The bottom of the second piston is fixed to the bottom of the air storage chamber through a return spring. The second piston slides inside the air storage chamber. The output end of the air storage chamber is connected to the outer sleeve through a connecting pipe. When the sand is unloaded, the material inside the inner slide plate increases, and the height of the material increases with the increase of the material. In this way, during the material unloading process, the second piston slides downward inside the air storage chamber. The stored gas inside the air storage chamber enters the interior of the outer sleeve through the connecting pipe as the second piston slides down. The increase of gas inside the outer sleeve pushes the first piston to slide inside the inner air chamber, so as to push the whole consisting of the first piston, guide shaft, sliding ring and atomizing nozzle to rise in height as the material is unloaded and the material increases, so that the height of the atomizing nozzle corresponds to the highest point of the material height in real time, so that the spray position of the atomizing nozzle always corresponds to the highest point of collision of the material, thus avoiding water waste and preventing material loss with the water flow. C: A fixed frame is fixedly installed on the upper end of the side support frame facing the inner slide plate. The bottom of the fixed frame is rotatably connected to a rotating shaft. A support base and a connecting base are installed on both sides of the rotating shaft. The connecting base is connected to the fixed frame through a compression spring. When the sliding ring moves to the highest point, the sliding ring squeezes the connecting base, causing the rotating shaft, support base, and connecting base to rotate. This releases the support base from limiting the sliding ring. Under the action of gravity, the dustproof net and the sliding ring move down along the fixed rod, allowing the dustproof net to quickly cover the outer edge of the material pile. This allows for rapid coverage of the material pile after unloading. At the same time, the material pile is positioned at a suitable height for the dustproof net to accurately cover the material, thus avoiding dust blown onto the material pile by the wind after unloading. D: There is a certain gap between the bottom of the fixed rod and the upper surface of the goods rack. This gap is adapted to the height of the sliding ring. After the dust net is covered, the sliding ring is in the position of being disengaged from the fixed rod. This makes it easy for the user to lift the dust net. By rotating the knob on the upper surface of the sliding ring, the knob drives the rotating gear to rotate. The rotating gear meshes with the internal gear ring on the inner surface of the atomizing nozzle, thereby driving the atomizing nozzle to rotate. After unloading, the spraying direction of the atomizing nozzle can be changed to suppress dust in other positions on the dock.

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