Coal transportation dust suppression spraying device

Abstract

This invention discloses a dust suppression spraying device for coal transportation, comprising an installation cylinder and a water cylinder rotary sealed and installed inside the installation cylinder. A water inlet pipe is coaxially fixed to the water cylinder, extending out of the installation cylinder and rotatably connected to it. Beneficial effects: This invention's dust suppression spraying device for coal transportation achieves the technical effect of each row of spray holes on the water cylinder spraying exactly one car body by rotating the water cylinder inside the installation cylinder. The gap between adjacent car bodies is not sprayed. By adjusting the rotation speed of the water cylinder to match the moving speed of the car bodies, a row of spray holes can be made to spray only from the front to the rear of the car body, avoiding spraying into the gap between adjacent car bodies. This eliminates the need for frequent start-stop of the dust suppression spraying device, does not affect its service life, and effectively solves the problem of wasted water / dust suppressant in existing coal transportation dust suppression spraying devices.

Description

Technical Field

[0001] This invention relates to the field of coal transportation, and in particular to a dust suppression spraying device for coal transportation. Background Technology

[0002] Currently, coal in my country is mostly transported by freight trains.

[0003] The carriages of coal freight trains are generally open-topped. During transportation, the relative movement of airflow and wind can easily cause a large amount of coal dust to fly, polluting the environment and causing coal loss. Therefore, dust control is required. The coal transportation dust suppression spraying device is a device specifically designed to spray water to prevent dust in the carriages of coal freight trains.

[0004] Currently, common coal transportation dust suppression spraying devices can be divided into two main categories based on their mobility. One type is fixedly installed on the railway line, spraying water / dust suppressant from above the carriages as trains pass. This type of coal transportation dust suppression spraying device is large in size, covers a large area, and has high construction costs. It is suitable for railway lines with large coal transport volumes and frequent train trips. The other type is mobile coal transportation dust suppression spraying device. This type of coal transportation dust suppression spraying device is generally installed on mobile equipment, such as freight cars. When dust suppression is needed, the vehicle is driven to the side of the railway line to spray the passing train carriages, and then drives away. This type of coal transportation dust suppression spraying device is small in size and has low construction costs. It is suitable for railway lines with small coal transport volumes and infrequent train trips.

[0005] Whether it's a mobile or stationary coal transport dust suppression spraying device, the inventors discovered that during actual use, when a coal train passes by, the dust suppression spraying device starts spraying water from the first car and stops spraying water when the last car leaves. During this entire process, the dust suppression spraying device does not stop spraying water, and there is a distance of 0.8-4 meters between adjacent cars (the distance varies depending on the type of train, but is generally around 1 meter for most train models). This results in the sprayed water / dust suppressant falling between adjacent carriages and being wasted. A freight train has anywhere from a dozen to several dozen carriages, so the amount of water / dust suppressant wasted on a single train is considerable. A railway line sees several to several dozen trains passing through it every day, and the amount of water / dust suppressant wasted over the years on multiple railway lines is astronomical, resulting in significant economic losses. Therefore, it is necessary to improve the existing dust suppression spraying equipment for coal transportation to reduce the waste of water / dust suppressant and minimize economic losses.

[0006] To address the aforementioned issues, industry designers have upgraded existing coal transportation dust suppression spraying devices to automatically start or stop spraying water / dust suppressants. This replaces the need for frequent manual control of the spraying process. The system stops spraying water / dust suppressants when the coal transportation dust suppression spraying device passes between adjacent cars, and resumes spraying only when the next car arrives. While this solves the problem of water / dust suppressant waste, the frequent start-stop cycles significantly shorten the device's lifespan. Therefore, this method is not practically applicable. Summary of the Invention

[0007] The main objective of this invention is to propose a dust suppression spraying device for coal transportation, which aims to solve the problem of water / dust suppressant waste in existing coal transportation dust suppression spraying devices.

[0008] To address the aforementioned problems, this invention proposes a dust suppression spraying device for coal transportation, comprising an installation cylinder and a water cylinder rotary sealed and installed inside the installation cylinder. A water inlet pipe is coaxially fixed to the water cylinder, extending out of the installation cylinder and rotatably connected to it. Multiple rows of centrally symmetrically distributed spray holes are arranged on the circumferential wall of the water cylinder, with each row of spray holes evenly distributed along the axial direction of the water cylinder. A spray nozzle extending circumferentially is provided on the wall of the installation cylinder. The rotation of the water cylinder causes each row of spray holes to rotate from one side of the spray nozzle to the other. During this process, each row of spray holes sprays water outward from the installation cylinder in the radial direction of the water cylinder. At any given time, only one row of spray holes sprays water outward from the installation cylinder.

[0009] The water cylinder is connected to a motor drive, and the motor drives the water cylinder to rotate.

[0010] In one embodiment, the outer circumferential surface of the water cylinder is sealed and slides against the inner wall of the mounting cylinder, and the water inlet pipe is connected to the motor drive.

[0011] In one embodiment, a sealing frame is fixed on the inner wall of the mounting cylinder, and the outer circumferential surface of the water cylinder slides tightly against the sealing frame. One row of water spray holes communicating with the water spray nozzle is located outside the sealing frame, and the other rows of water spray holes are located inside the sealing frame.

[0012] In one embodiment, the sealing frame includes:

[0013] Two sealing strips are provided on both sides of the water nozzle and are parallel to each other. The sealing strip is in the shape of a straight line and its length is greater than the length of a row of water nozzles.

[0014] Two sealing strips are provided at both ends of the two sealing strips and are parallel to each other. The two ends of the sealing strips are connected to the same end of the two sealing strips. The sealing strips are fan-shaped and the central angle of the fan ring is greater than 180°. The sealing strips are perpendicular to the sealing strips.

[0015] In one embodiment, the outer diameter of the water cylinder is smaller than the inner diameter of the mounting cylinder, thereby forming a cylindrical gap between the water cylinder and the mounting cylinder;

[0016] An elastic sheet is provided on the outer circumference of the water cylinder. Along the rotation direction of the water cylinder, the front end of the elastic sheet is in close contact with the outer circumference of the water cylinder and is fixedly connected to the water cylinder. The rear end of the elastic sheet extends away from the water cylinder, and a sealing plug is fixed on the side of the rear end of the elastic sheet facing the water cylinder.

[0017] The rotation of the water cylinder causes the elastic sheet to gradually enter the cylindrical gap from the front end to the rear end through the spray nozzle. During this process, the rear end of the elastic sheet is pushed towards the outer circumference of the water cylinder by the mounting cylinder, which in turn moves the sealing plug towards the spray hole. After the elastic sheet has completely entered the cylindrical gap, the sealing plug is tightly inserted into the spray hole to block it.

[0018] When the rear end of the elastic sheet leaves the cylindrical gap and enters the water nozzle, the water in the water cylinder and the elastic sheet work together to make the sealing plug leave the water nozzle.

[0019] In one embodiment, the elastic sheet located within the cylindrical gap is in close contact with the outer circumferential surface of the water cylinder and the inner circumferential surface of the mounting cylinder.

[0020] In one embodiment, after the sealing plug leaves the water spray hole, the sealing plug continues to move away from the water cylinder and reset under the action of the elastic sheet, without blocking the water flow from the water spray hole.

[0021] In one embodiment, a vision camera and a speed measuring device are also included. The vision camera is used to acquire the position of the carriage, and the speed measuring device is used to acquire the moving speed of the carriage so as to adjust the motor speed according to the position and moving speed of the carriage, so that as any row of water spray holes rotates from one side of the water nozzle to the other side, it can spray from the front side of the carriage to the rear side, and after the previous row of water spray holes stops spraying, the next row of water spray holes starts spraying to the front side of the next carriage.

[0022] In one embodiment, the mounting cylinder is horizontally fixedly mounted on a mounting frame, which is fixedly connected to a lifting mechanism. The lifting mechanism drives the mounting cylinder to lift. The lifting mechanism is mounted on a rotary seat, which drives the mounting cylinder to rotate around the rotary seat. The rotary seat is fixedly mounted on the spraying vehicle.

[0023] In one embodiment, the output shaft of the motor is provided with a drive wheel, and an annular groove is coaxially provided on the outer circumference of the water cylinder. A transmission belt is tightly fitted between the drive wheel and the annular groove, and the transmission belt extends out of the mounting cylinder from the water nozzle.

[0024] Beneficial effects: The coal transportation dust suppression spraying device of the present invention achieves the technical effect of each row of spray holes on the water cylinder spraying exactly one car body by rotating the water cylinder inside the installation cylinder. The gap between two adjacent car bodies will not be sprayed. As long as the rotation speed of the water cylinder is adjusted to match the moving speed of the car body, the spray holes can be adjusted to spray from the front to the rear of the car body without spraying into the gap between two adjacent car bodies. There is no need to frequently start and stop the coal transportation dust suppression spraying device, which does not affect the service life. It effectively solves the problem of water / dust suppressant waste in existing coal transportation dust suppression spraying devices. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a coal transportation dust suppression spraying device according to one embodiment of the present invention. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the structure of a coal transportation dust suppression spraying device according to one embodiment of the present invention. Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the structure of a coal transportation dust suppression spraying device according to one embodiment of the present invention. Figure 3 ;

[0029] Figure 4 yes Figure 3 AA section view in the middle;

[0030] Figure 5 yes Figure 4 Enlarged view of part B in the image;

[0031] Figure 6 yes Figure 4 Enlarged view of section C in the image;

[0032] Figure 7 This is a schematic diagram of the working operation of a dust suppression spraying device for coal transportation according to the present invention;

[0033] Figure 8This is a schematic diagram of a dust suppression spraying device for coal transportation installed on a spraying vehicle according to the present invention;

[0034] Figure 9 yes Figure 8 Enlarged view of part D in the image;

[0035] Figure 10 yes Figure 9 Enlarged view of part E in the image;

[0036] Figure 11 This is a schematic diagram of the structure of a coal transportation dust suppression spraying device according to another embodiment of the present invention;

[0037] Figure 12 yes Figure 11 FF section view;

[0038] Figure 13 yes Figure 12 A schematic diagram showing how the rotation of the water cylinder drives the sealing plug to insert into the spray nozzle.

[0039] The annotations in the attached figures are explained as follows:

[0040] 1. Cylinder body; 2. Spray nozzle; 3. Water cylinder; 4. Spray hole; 5. Sealing strip one; 6. Sealing strip two; 7. Cylindrical gap; 8. Vision camera; 9. Speed ​​measuring device; 10. Cylinder cover; 11. Connecting shaft; 12. Bearing; 13. Annular groove one; 14. Transmission belt; 15. Drive wheel; 16. Motor; 17. Mounting base; 18. Inlet pipe; 19. Water delivery pipe; 20. Pipe sleeve; 21. Retaining ring; 22. Annular groove two; 23. Annular groove three; 24. Sealing ring; 25. Mounting bracket; 26. Lifting mechanism; 27. Rotary seat; 28. Sprayer truck; 29. ​​Truck body; 30. Elastic sheet; 31. Sealing plug. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0045] This invention proposes a dust suppression spraying device for coal transportation. This device achieves the technical effect of each row of spray holes 4 on the water cylinder 3 spraying exactly one car body 29 within the rotating water cylinder 3, preventing spraying into the gaps between adjacent car bodies 29. By adjusting the rotation speed of the water cylinder 3 to match the moving speed of the car bodies 29, a row of spray holes 4 can spray only from the front to the rear of the car body 29, avoiding spraying into the gaps between adjacent car bodies 29. This eliminates the need for frequent starting and stopping of the dust suppression spraying device, does not affect its service life, and effectively solves the problem of wasted water / dust suppressant in existing coal transportation dust suppression spraying devices.

[0046] Specifically, in one embodiment of the invention, such as Figures 1-3 As shown, the coal transportation dust suppression spraying device includes an installation cylinder and a water cylinder 3 rotary sealed and installed inside the installation cylinder. A water inlet pipe 18 is coaxially fixed to the water cylinder 3. One end of the water inlet pipe 18 extends out of the installation cylinder and is rotatably connected to it. This design allows water to be injected into the water cylinder 3 through the water inlet pipe 18. Figure 9 As shown, one end of the water inlet pipe 18 extending out of the mounting cylinder is rotatably and sealed to the water supply pipe 19. The water supply pipe 19 is connected to the water pump, which continuously supplies water to the water cylinder 3, causing the spray nozzle 4 to spray water outward.

[0047] Preferably, the water inlet pipe 18 and the water outlet pipe 19 are connected by... Figure 9 and Figure 10 The sealing structure shown achieves a rotary sealing connection. This sealing structure is simple, has a good sealing effect, and the 24 sealing rings are easy, convenient, and quick to replace. Specifically, as shown... Figure 9 and Figure 10 As shown, a retaining ring 21 is coaxially fixedly installed on the outer wall of the water supply pipe 19 near the water inlet pipe 18. An annular groove 22 is provided on the inner wall of the end of the water inlet pipe 18 that extends out of the mounting cylinder. The retaining ring 21 can be inserted into the annular groove 22. A sleeve 20 is provided on the end of the water supply pipe 19 near the water inlet pipe 18. The sleeve 20 is spirally sealed on the end of the water inlet pipe 18 that extends out of the mounting cylinder. After tightening the sleeve 20, the retaining ring 21 can be axially squeezed by the sleeve 20, so that the retaining ring 21 is pressed and fixed in the annular groove 22. An annular groove 3 23 is provided on the sleeve 20, which communicates with the annular groove 22. Sealing rings 24 are coaxially provided on both ends of the retaining ring 21. After tightening the sleeve 20, the sealing rings 24 on both ends of the retaining ring 21 are pressed, thereby achieving a sealing effect and preventing water leakage at the connection between the water inlet pipe 18 and the water supply pipe 19.

[0048] In this embodiment, as Figure 3 and Figure 4 As shown, the water cylinder 3 has multiple rows of centrally symmetrically distributed spray holes 4 on its circumferential wall. Each row of spray holes 4 is evenly distributed along the axial direction of the water cylinder 3 and arranged in a straight line. The spray holes 4 are through holes, and their central axis coincides with the radial direction of the water cylinder 3.

[0049] In this embodiment, as Figure 3 and Figure 4 As shown, the wall of the mounting cylinder is provided with a water nozzle 2 extending in the circumferential direction. The extension length of the water nozzle 2 is the distance between two adjacent rows of water nozzles 4 on the circumferential wall of the water cylinder 3. This design ensures that at any time, only one row of water nozzles 4 is connected to the water nozzle 2 and sprays water out of the mounting cylinder.

[0050] In this embodiment, as Figure 3 and Figure 4The arrow indicates the rotation direction of the water cylinder 3. The mounting cylinder remains stationary. The rotation of the water cylinder 3 drives each row of spray holes 4 to rotate from one side of the spray nozzle 2 to the other. During this process, the row of spray holes 4 remains in communication with the spray nozzle 2, allowing water to spray outwards from the mounting cylinder in the radial direction of the water cylinder 3. When the row of spray holes 4 leaves the spray nozzle 2 and is no longer in communication with it, the water cylinder 3 and the mounting cylinder are sealed together during rotation, thus removing the spray hole. The water nozzle 4 that is no longer connected to the water nozzle 2 will be blocked and will not be able to spray water. In addition, the extension length of the water nozzle 2 is the distance between the two adjacent rows of water nozzles 4 on the circumferential wall of the water cylinder 3, so that the first row of water nozzles 4 leaves the water nozzle 2 and is no longer connected to the water nozzle 2. After the water spraying stops, the second row of water nozzles 4 will immediately continue to spray water, repeating the work of the first row of water nozzles 4. The first row of water nozzles 4 and the second row of water nozzles 4 are in front and behind the water cylinder 3 in the direction of rotation.

[0051] In this embodiment, as Figure 7 As shown in the diagram, the arrows indicate the forward direction of each carriage 29 of the train. When the water tank 3 rotates, the preceding row of spray nozzles 4 rotates from one side of the spray nozzle 2 to the other. During this process, the spray nozzles 4 begin spraying water / dust suppressant from the front side of the preceding carriage 29 until they reach the rear side of the carriage 29. Then, the spray nozzles 4 leave the spray nozzle 2, no longer connecting with it, and stop spraying. Immediately afterward, the following row of spray nozzles 4 rotates from one side of the spray nozzle 2 to the other, repeating the operation of the previous row of spray nozzles 4, starting spraying from the front side of the next carriage 29. The spraying of water / dust suppressant continues until it reaches the rear of the car body 29. This means that each row of spray nozzles 4 rotates from one side of the spray outlet 2 to the other, spraying each car body 29 from the front to the rear. This effectively avoids spraying the gap between adjacent car bodies 29, ensuring that the gap is not reached. External water can be continuously injected into the water tank 3, eliminating the need for frequent starting and stopping of the coal transportation dust suppression spraying device and water pump, thus not affecting its service life. Simultaneously, it effectively solves the problem of wasted water / dust suppressant in existing coal transportation dust suppression spraying devices, and can be widely promoted for practical application.

[0052] It should be noted that the dust suppression spraying device for coal transportation of the present invention requires the rotation speed of the water cylinder 3 to be adjusted during operation so that it matches the moving speed of the car body 29. This ensures that a row of water spray holes 4 sprays from the front of one car body 29 to the rear, without spraying into the gap between two adjacent car bodies 29.

[0053] Correspondingly, the coal transportation dust suppression spraying device also includes a vision camera 8 and a speed measuring device 9. The vision camera 8 is used to obtain the position of the car body 29, and the speed measuring device 9 is used to obtain the moving speed of the car body 29 so as to adjust the rotation speed of the motor 16 according to the position and moving speed of the car body 29, so that during the process of any row of water spray holes 4 rotating from one side of the water outlet 2 to the other side, it can spray from the front side of a car body 29 to the rear side, and after the previous row of water spray holes 4 leaves the water outlet 2 and stops spraying, the next row of water spray holes 4 just enters the water outlet 2 and starts spraying to the front side of the next car body 29.

[0054] Of course, besides the rotational speed of the water tank 3 needing to match the moving speed of the carriage 29, the extension length of the water nozzle 2 also needs to match the distance between adjacent carriages 29, such as... Figure 7 As shown, this arrangement ensures that the water spray from the front row of nozzles 4 reaches the rear of the carriage 29 and immediately leaves the nozzle 2, ceasing all communication and stopping spraying. Simultaneously, the next row of nozzles 4 begins spraying water / dust suppressant from the front of the next carriage 29. Figure 7 The arrow in the middle, shaped like the number eight, indicates the spray direction of spray hole 4.

[0055] In this embodiment, the water cylinder 3 is driven by the motor 16, which drives the water cylinder 3 to rotate. For example, a transmission structure can be provided at the end of the water inlet pipe 18 that extends out of the mounting cylinder and is driven by the motor 16, so that the motor 16 drives the water inlet pipe 18 to drive the water cylinder 3 to rotate. Alternatively, as shown below. Figure 3 As shown, an annular groove 13 is coaxially arranged on the outer circumference of the water cylinder 3. A drive wheel 15 is arranged on the output shaft of the motor 16. A transmission belt 14 is tightly fitted in the drive wheel 15 and the annular groove 13. The transmission belt 14 extends out of the mounting cylinder from the water nozzle 2. The motor 16 drives the transmission belt 14 to drive the water cylinder 3 to rotate. Alternatively, a gear ring can be arranged in the annular groove 13, and the motor 16 drives the gear ring to rotate to drive the water cylinder 3 to rotate.

[0056] In this embodiment, as Figures 1-3 As shown, the mounting cylinder includes a cylinder body 1 and a detachable, sealed, and fixed cap 10 at one end of the cylinder body 1. A connecting shaft 11 is rotatably mounted on the cap 10 via a bearing 12. The connecting shaft 11 is coaxially and fixedly connected to one end of the water cylinder 3. The other end of the water cylinder 3 is provided with a water inlet pipe 18. The water inlet pipe 18 is rotatably connected to the cylinder body 1 via another bearing 12. This design helps to improve the stability of the rotatable connection between the water cylinder 3 and the mounting cylinder, and also facilitates the disassembly and assembly of the water cylinder 3.

[0057] The coal transportation dust suppression spraying device of this embodiment can be designed as either a mobile or a fixed coal transportation dust suppression spraying device. When it is designed as a mobile coal transportation dust suppression spraying device, such as... Figure 8 As shown, the mounting cylinder is horizontally fixedly mounted on the mounting frame 25 using the mounting base 17 fixedly mounted on it. The mounting frame 25 is fixedly connected to the lifting mechanism 26. The lifting mechanism 26 drives the mounting cylinder to lift and adjust its spraying height. The lifting mechanism 26 is mounted on the rotary seat 27. The rotary seat 27 drives the mounting cylinder to rotate around the rotary seat 27, which facilitates the adjustment of the spraying position and alignment with the train car 29 on the track. The rotary seat 27 is fixedly mounted on the spraying vehicle 28.

[0058] The following three embodiments illustrate the specific form of the rotary seal connection between the water cylinder 3 and the mounting cylinder.

[0059] Example 1:

[0060] In this embodiment, the water cylinder 3 and the mounting cylinder are connected by a rotary seal. Specifically, the outer circumferential surface of the water cylinder 3 is sealed and slides against the inner wall of the mounting cylinder. The outer circumferential surface of the water cylinder 3 is sealed against the inner wall of the mounting cylinder to block the water spray hole 4, so that the water spray hole 4, which is away from the water spray outlet 2 and no longer connected to the water spray outlet 2, stops spraying water and does not leak.

[0061] Example 2:

[0062] In this embodiment, the water cylinder 3 and the mounting cylinder are connected by a rotary seal in the following specific form: Figures 3-6 As shown, a sealing frame is fixed on the inner wall of the mounting cylinder. The outer circumferential surface of the water cylinder 3 slides tightly against the sealing frame. One row of spray holes 4 connected to the spray nozzle 2 is located outside the sealing frame, while the other rows of spray holes 4 are located inside the sealing frame. The sealing frame is made of rubber. The sealing frame is used to seal the spray holes 4 that are away from the spray nozzle 2 and no longer connected to the spray nozzle 2, so that they stop spraying water and do not leak. This sealing method has a better sealing effect than the sealing method used in the first embodiment above, where the outer circumferential surface of the water cylinder 3 slides tightly against the inner wall of the mounting cylinder. The outer circumferential surface of the water cylinder 3 and the inner wall of the mounting cylinder are both rigid curved surfaces. The sealing effect of the two sticking tightly together is obviously not as good as the sealing effect of the sealing frame sticking tightly against the outer circumferential surface of the water cylinder 3.

[0063] Specifically, in this embodiment, such as Figures 3-6As shown, the sealing frame includes two sealing strips 5 and two sealing strips 6, both of which are fixedly connected to the inner wall of the mounting cylinder. The two sealing strips 5 are respectively located on both sides of the water nozzle 2 in the rotation direction of the water cylinder 3, and the two sealing strips 5 are parallel to each other. The sealing strips 5 are in the shape of a straight line, and their length is greater than the length of a row of water nozzles 4. This design, together with the two sealing strips 6, can encircle the other rows of water nozzles 4 that are not connected to the water nozzle 2 inside the sealing frame. The water flowing out of these water nozzles 4 is blocked inside the sealing frame and cannot flow out, thereby achieving the technical effect of stopping the water nozzles 4 that have left the water nozzle 2 and are no longer connected to the water nozzle 2 from spraying water and preventing water leakage.

[0064] In this embodiment, as Figures 3-6 As shown, two sealing strips 26 are located at both ends of the length direction of the two sealing strips 15 and are parallel to each other. The two ends of the sealing strip 26 are connected to the same end of the two sealing strips 15. Preferably, the two sealing strips 15 and the two sealing strips 26 are integrally formed. The sealing strip 26 is fan-shaped with a central angle greater than 180°. The sealing strips 15 and 26 are perpendicular. During the rotation of the water cylinder 3, the outer circumference of the water cylinder 3 will slide tightly against the sealing frame. A row of water spray holes 4 connected to the water nozzle 2 is located on the outside of the sealing frame and can spray water outward. As the water cylinder 3 rotates, the row of water spray holes 4 leaves the water nozzle 2 and enters the inside of the sealing frame after no longer being connected to the water nozzle 2. At this time, the water flowing out of these water spray holes 4 is blocked inside the sealing frame and cannot flow outward, thereby achieving the technical effect of stopping the water spray holes 4 that have left the water nozzle 2 and are no longer connected to the water nozzle 2 and preventing water leakage.

[0065] Correspondingly, such as Figure 4 As shown, the outer diameter of the water cylinder 3 is smaller than the inner diameter of the mounting cylinder, thus forming a cylindrical gap 7 between the water cylinder 3 and the mounting cylinder to accommodate the sealing frame. In this case, if the motor 16 adopts... Figure 3 The transmission method shown drives the water cylinder 3 to rotate, so the annular groove 13 needs to be set on the outside of the sealing frame.

[0066] Example 3:

[0067] In this embodiment, as Figures 11-13 As shown, an elastic sheet 30 is provided on the outer circumference of the water cylinder 3. The elastic sheet 30 is a thin metal or plastic sheet with a certain elasticity, such as spring steel, stainless steel, or plastic. This design makes the elastic sheet 30 more wear-resistant than the rubber sealing frame in Embodiment 2, reducing the frequency of replacement of wear parts and saving time and effort. Of course, when the elastic sheet 30 is made of metal material, it needs to be treated with anti-corrosion to prevent it from rusting and thus extend its service life.

[0068] In this embodiment, as Figures 11-13 As shown, along the rotation direction of water cylinder 3, that is... Figures 11-13 In the direction of the arrow, the front end of the elastic sheet 30 is in close contact with the outer circumference of the water cylinder 3 and is fixedly connected to the water cylinder 3. The rear end of the elastic sheet 30 extends away from the water cylinder 3, and a sealing plug 31 is fixedly provided on the side of the rear end of the elastic sheet 30 facing the water cylinder 3. The sealing plug 31 is made of rubber. The front end and rear end of the elastic sheet 30 are the front end and rear end of the elastic sheet 30 in the rotation direction of the water cylinder 3.

[0069] In this embodiment, as Figures 11-13 As shown, the rotation of the water cylinder 3 causes the elastic plate 30 to gradually enter the cylindrical gap 7 from the spray nozzle 2 from the front end to the rear end. During this process, the rear end of the elastic plate 30 is pushed towards the outer circumference of the water cylinder 3 by the mounting cylinder, which in turn causes the sealing plug 31 to move towards the spray hole 4. After the elastic plate 30 has completely entered the cylindrical gap 7, the elastic plate 30 located in the cylindrical gap 7 is in close contact with the outer circumference of the water cylinder 3 and the inner circumference of the mounting cylinder. At this time, the sealing plug... 31 is tightly inserted into the water spray hole 4 to block the water spray hole 4 and prevent water leakage. When the rear end of the elastic plate 30 leaves the cylindrical gap 7 and re-enters the water spray nozzle 2, the water in the water cylinder 3 and the elastic plate 30 work together to make the sealing plug 31 leave the water spray hole 4. After the sealing plug 31 leaves the water spray hole 4, a row of water spray holes 4 in the water spray nozzle 2 spray water / dust suppressant outward. The sealing plug 31 continues to move away from the water cylinder 3 and reset under the action of the elastic plate 30 which has undergone elastic deformation. Figure 13 The position shown indicates that the sealing plug 31 does not obstruct the water flow from the spray hole 4 at this position.

[0070] In this embodiment, Figure 12 As shown, the first row of water spray holes 4 is about to leave the water spray nozzle 2, and the second row of water spray holes 4 is about to enter the water spray nozzle 2. The elastic sheet 30 on the first row of water spray holes 4 has not yet completely adhered to the outer circumference of the water cylinder 3, and the sealing plug 31 has not been fully inserted into the water spray hole 4. It can still spray water / dust suppressant outward. Because the rear end of the elastic sheet 30 of the second row of water spray holes has not completely left the cylindrical gap 7, the sealing plug 31 is still tightly inserted into the water spray hole 4, blocking the water spray hole 4 and preventing it from spraying water / dust suppressant outward.

[0071] In this embodiment, as Figure 11 As shown, each water spray hole 4 is provided with a corresponding elastic sheet 30 and sealing plug 31. Of course, in other embodiments, a row of water spray holes 4 can also share a single elastic sheet 30. A sealing plug 31 is provided on the elastic sheet 30 at the position corresponding to each water spray hole 4. This design facilitates the installation of the elastic sheet 30.

[0072] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A coal transportation dust suppression spraying device, characterized in that, The device includes an installation cylinder and a water cylinder with a rotary seal installed inside the installation cylinder. A water inlet pipe is coaxially fixed on the water cylinder, extending out of the installation cylinder and rotatably connected to it. Multiple rows of centrally symmetrically distributed spray holes are provided on the circumferential wall of the water cylinder. Each row of spray holes is evenly distributed along the axial direction of the water cylinder. A spray nozzle extending in the circumferential direction is provided on the wall of the installation cylinder. The rotation of the water cylinder drives each row of spray holes to rotate from one side of the spray nozzle to the other side. During this process, each row of spray holes sprays water out of the installation cylinder in the radial direction of the water cylinder. At any given time, only one row of spray holes sprays water out of the installation cylinder. The water cylinder is connected to the motor drive, and the water cylinder is driven to rotate by the motor. It also includes a vision camera and a speed measuring device. The vision camera is used to obtain the position of the carriage, and the speed measuring device is used to obtain the moving speed of the carriage so as to adjust the speed of the motor according to the position and moving speed of the carriage. This allows any row of water spray holes to spray from the front side of the carriage to the rear side as it rotates from one side of the nozzle to the other, and the next row of water spray holes to start spraying from the front side of the next carriage after the previous row of water spray holes stops spraying.

2. The dust suppression spraying device for coal transportation as described in claim 1, characterized in that, The outer circumferential surface of the water cylinder is sealed and slides tightly against the inner wall of the mounting cylinder, and the water inlet pipe is connected to the motor drive.

3. A dust suppression spraying device for coal transportation as claimed in claim 1 wherein, A sealing frame is fixed on the inner wall of the mounting cylinder. The outer circumferential surface of the water cylinder slides tightly against the sealing frame. One row of water spray holes connected to the water spray nozzle is located outside the sealing frame, while the other rows of water spray holes are located inside the sealing frame.

4. A dust suppression spraying device for coal transportation as claimed in claim 3 wherein, The sealing frame includes: Two sealing strips are provided on both sides of the water nozzle and are parallel to each other. The sealing strip is in the shape of a straight line and its length is greater than the length of a row of water nozzles. Two sealing strips are provided at both ends of the two sealing strips and are parallel to each other. The two ends of the sealing strips are connected to the same end of the two sealing strips. The sealing strips are fan-shaped and the central angle of the fan ring is greater than 180°. The sealing strips are perpendicular to the sealing strips.

5. A dust suppression spraying device for coal transportation as claimed in claim 1 wherein, The outer diameter of the water cylinder is smaller than the inner diameter of the mounting cylinder, thereby forming a cylindrical gap between the water cylinder and the mounting cylinder. An elastic sheet is provided on the outer circumference of the water cylinder. Along the rotation direction of the water cylinder, the front end of the elastic sheet is in close contact with the outer circumference of the water cylinder and is fixedly connected to the water cylinder. The rear end of the elastic sheet extends away from the water cylinder, and a sealing plug is fixed on the side of the rear end of the elastic sheet facing the water cylinder. The rotation of the water cylinder causes the elastic sheet to gradually enter the cylindrical gap from the front end to the rear end through the spray nozzle. During this process, the rear end of the elastic sheet is pushed towards the outer circumference of the water cylinder by the mounting cylinder, which in turn moves the sealing plug towards the spray hole. After the elastic sheet has completely entered the cylindrical gap, the sealing plug is tightly inserted into the spray hole to block it. When the rear end of the elastic sheet leaves the cylindrical gap and enters the water nozzle, the water in the water cylinder and the elastic sheet work together to make the sealing plug leave the water nozzle.

6. A dust suppression spraying device for coal transportation as claimed in claim 5 wherein, The elastic sheet located in the cylindrical gap is in close contact with the outer circumference of the water cylinder and the inner circumference of the mounting cylinder.

7. A dust suppression spraying device for coal transportation as claimed in claim 5 wherein, After the sealing plug leaves the water spray hole, it continues to move away from the water cylinder and reset under the action of the elastic plate, without blocking the water flow from the water spray hole.

8. A dust suppression spraying device for coal transportation as claimed in claim 1 wherein, The mounting cylinder is horizontally fixedly installed on the mounting frame, which is fixedly connected to the lifting mechanism. The lifting mechanism drives the mounting cylinder to lift. The lifting mechanism is installed on the rotary seat, which drives the mounting cylinder to rotate around the rotary seat. The rotary seat is fixedly installed on the spraying truck.

9. A dust suppression spraying device for coal transportation as claimed in claim 1 wherein, The output shaft of the motor is equipped with a drive wheel, and an annular groove is coaxially provided on the outer circumference of the water cylinder. A transmission belt is tightly fitted between the drive wheel and the annular groove, and the transmission belt extends out of the mounting cylinder from the water nozzle.

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