A quick change abrasive blasting head assembly

Abstract

This application discloses a quick-change abrasive coating nozzle device, including a mounting frame and a nozzle body. The mounting frame is installed on the spraying equipment, and the nozzle body is connected to the mounting frame via a locking part. The mounting frame is provided with a connecting sleeve, and the top of the nozzle body is provided with a mounting sleeve that passes through the connecting sleeve. The locking part includes multiple sets of locking components and a starting ring. The locking components can switch between compressed and expanded states. In the expanded state, they are locked inside the connecting sleeve, and the starting ring is sleeved on the connecting sleeve. Rotation can switch the state of the locking components. A connecting pipe is provided inside the connecting sleeve. One end of the nozzle body is provided with a liquid inlet pipe, and the other end is provided with a nozzle. The connecting pipe is connected to the liquid inlet pipe and a sealing component is provided between them. The connecting pipe is also connected to the spraying equipment. This device can realize tool-free quick disassembly and assembly of the nozzle body, simplifying the replacement process and shortening the replacement time. At the same time, the sealing component reduces abrasive leakage, improves the operational stability of the device, and ensures continuous abrasive coating operations.

Description

Technical Field

[0001] This invention belongs to the field of abrasive cloth processing technology, specifically a quick-change abrasive cloth coating nozzle device. Background Technology

[0002] In the abrasive coating process of abrasive cloth production, the nozzle device is the core component that determines the coating accuracy and production efficiency. In order to achieve continuous production of abrasive cloth, it is often necessary to frequently change the nozzle body to adapt to the production conditions according to the coating requirements of different specifications of abrasive cloth.

[0003] However, traditional abrasive coating nozzle devices typically use threaded fastening and bolt locking to connect the nozzle body to the coating equipment, lacking a quick-disassembly design. This means that replacing the nozzle body requires operators to use specialized tools such as wrenches and screwdrivers to gradually disassemble and tighten it, making the process cumbersome and time-consuming. Since abrasive cloth production is mostly a continuous assembly line operation, nozzle replacement would cause the entire production line to stop, severely impacting the continuity of abrasive cloth production and reducing efficiency. Furthermore, frequent disassembly and installation using tools can easily cause wear and stripping at the nozzle connection points, leading to loose connections after subsequent installation and abrasive leakage. This not only wastes abrasive materials but also contaminates equipment and semi-finished abrasive cloth, reducing product yield.

[0004] Therefore, the existing technology has certain technical contradictions: the connection between the nozzle body and the installation structure is cumbersome and cannot be quickly replaced, which leads to problems such as affecting production continuity, increasing raw material waste and product defect rate.

[0005] Therefore, providing a sandpaper abrasive coating nozzle device that enables quick replacement and convenient disassembly of the nozzle body while ensuring connection stability is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a quick-change abrasive coating nozzle device, which solves the problems of cumbersome connection between the traditional nozzle body and the installation structure, inability to be quickly replaced, resulting in low production efficiency, wear of connection parts, abrasive leakage and high product defect rate.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A quick-change abrasive coating nozzle device includes a mounting bracket and a nozzle body, wherein the mounting bracket is installed on a spraying equipment;

[0009] The nozzle body is located below the mounting bracket, and the nozzle body is mounted on the mounting bracket via a locking part. A connecting sleeve is provided on the mounting bracket.

[0010] The locking part includes multiple sets of locking components and a starting ring. The top of the nozzle body is provided with an installation sleeve. The locking component is connected to the installation sleeve to form a compressed state and an expanded state. The installation sleeve passes through the connecting sleeve. When the locking component is in the expanded state, it can be locked in the connecting sleeve.

[0011] The starting ring is sleeved on the connecting sleeve. By rotating the starting ring, the locking member can be selectively switched to a compressed state or an expanded state.

[0012] The connecting sleeve is provided with a connecting pipe. One end of the nozzle body is provided with a liquid inlet pipe, and the other end is equipped with a nozzle. The inlet end of the connecting pipe is connected to the spraying equipment through a connecting pipe, and the outlet end of the connecting pipe is connected to the liquid inlet pipe. A sealing element is provided between the two.

[0013] In a further optimized configuration, the top of the mounting sleeve is provided with multiple sets of movable boxes, and the locking element includes a first locking block, which is located inside the movable box and moves along the movable box;

[0014] The movable box is equipped with multiple sets of springs, which are located between the movable box and the first locking block.

[0015] When the first locking block is moved into the movable box by an external force, the first locking block compresses the spring, and the locking member is in a compressed state;

[0016] When the first locking block is not subjected to external force, the spring is not compressed to its initial state, and the locking member is in an expanded state under the elastic support of the spring.

[0017] In a further optimized configuration, a second locking block is provided below the first locking block. The first locking block is connected to the second locking block via a connecting rod. The second locking block moves with the first locking block. The mounting sleeve has a through groove corresponding to the second locking block, and the second locking block passes through the through groove.

[0018] The connecting sleeve is provided with a locking part and a sleeve part. The inner diameter of the locking part is smaller than the inner diameter of the sleeve part, and an annular locking groove is provided in the locking part.

[0019] When the connecting sleeve is inserted into the connecting sleeve and the locking member is in the extended state, the first locking block is locked in the annular groove in the locking part, and the second locking block is located in the sleeve part.

[0020] In a further optimized configuration, a rotating groove is provided on the connecting sleeve, and the starting ring is sleeved on the connecting sleeve and engaged in the rotating groove, so that the starting ring can rotate around the axis of the connecting sleeve along the rotating groove, and the rotating groove is located at the sleeved portion of the connecting sleeve.

[0021] Both the first and second card blocks are permanent magnet blocks, and their magnetic poles face the same direction.

[0022] The inner side of the starting ring is provided with a first magnetic attraction part, and the first magnetic attraction part and the first card block are arranged with the same pole on the opposite side to form a repulsive force.

[0023] A second magnetic attraction part is provided inside the starting ring at a position on one side of the first magnetic attraction part. The second magnetic attraction part and the first card block are arranged with opposite poles to form an attraction force.

[0024] The first magnetic attraction part and the second magnetic attraction part are spaced apart along the circumferential direction of the starting ring, and their positions correspond to the positions of the first locking block, respectively. Rotating the starting ring can selectively make the first magnetic attraction part or the second magnetic attraction part face the first locking block, thereby realizing the switching between the compression state and the expansion state of the locking member.

[0025] In a further optimized configuration, a dispersing element is provided inside the nozzle body, which divides the nozzle body into a first chamber and a second chamber.

[0026] The dispersing component includes a dispersing sleeve, which is installed inside the nozzle body, spans between the first chamber and the second chamber, and the first chamber and the second chamber are connected by the dispersing sleeve.

[0027] Both ends of the dispersion sleeve are provided with cover plates. Multiple sets of flow grooves are opened on one set of cover plates and the dispersion sleeve. A rotating shaft and turbine blades are provided inside the dispersion sleeve. The two ends of the rotating shaft are rotatably connected to the two sets of cover plates respectively. The turbine blades are sleeved on the rotating shaft.

[0028] In a further optimized configuration, a partition sleeve is provided in the second chamber. The partition sleeve is located between the dispersing component and the nozzle. The partition sleeve is provided with multiple sets of partition plates, and the partition sleeve forms multiple sets of dispersing channels through the multiple sets of partition plates.

[0029] In a further optimized configuration, a connecting pipe is provided on one side of the nozzle body, the connecting pipe being in communication with the first chamber, and a connecting head is provided on one side of the nozzle body, one end of the connecting head being connected to the connecting pipe, and the other end being connected to an external liquid supply device via a connecting pipe.

[0030] The connecting pipe is located above the dispersing component.

[0031] In a further optimized configuration, the nozzle body is provided with a through pipe, which communicates with the second chamber and is located close to the nozzle.

[0032] An observation sleeve is provided on one side of the nozzle, the observation sleeve is connected to the nozzle body, the passage pipe is located inside the observation sleeve, and an observation airbag is sleeved on the passage pipe. The outer surface of the observation airbag is coated with a colored coating.

[0033] The observation sleeve is made of transparent material.

[0034] In a further optimized configuration, the outer side of the mounting sleeve is provided with multiple sets of limiting rods, and the inner side of the connecting sleeve is provided with multiple sets of limiting rails, with the limiting rods being engaged within the limiting rails.

[0035] The outer side of the connecting sleeve is provided with a positioning protrusion corresponding to the outer side of the mounting sleeve.

[0036] In a further optimized configuration, a limiting structure is provided between the starting ring and the connecting sleeve, allowing the starting ring to rotate only within a set range.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. The mounting bracket of this device is fixed to the spraying equipment. The connecting sleeve at its bottom mates with the mounting sleeve at the top of the nozzle body. Multiple locking parts of the locking mechanism can switch between compressed and expanded states. During installation, simply insert the mounting sleeve into the connecting sleeve to switch the locking parts to the expanded state for secure locking. During disassembly, rotating the starting ring on the connecting sleeve switches the locking parts to the compressed state, quickly separating the nozzle body from the mounting bracket. No special tools are required throughout the process, simplifying the disassembly and assembly of the nozzle body, shortening replacement time, avoiding prolonged production line downtime due to nozzle replacement, ensuring the continuity of abrasive cloth production, and significantly improving production efficiency. At the same time, the connecting pipe inside the connecting sleeve mates with the liquid inlet pipe of the nozzle body, and a seal is installed between the two, effectively avoiding abrasive leakage caused by loose connections during traditional nozzle disassembly and assembly, reducing material waste, equipment contamination, and the risk of scrapped abrasive cloth.

[0039] 2. The locking mechanism, through the cooperation of the movable box, spring, and first locking block, achieves stable switching between compressed and expanded states. The elastic support of the spring ensures a more secure locking mechanism in the expanded state, preventing loosening or displacement of the nozzle body during operation and ensuring coating accuracy. The linkage design of the first and second locking blocks, combined with the locking and fitting parts of the connecting sleeve, further enhances the structural stability after docking. Simultaneously, the magnetic starting ring design makes switching the locking mechanism's state more convenient and smooth, and the limiting structure ensures that the starting ring rotates within a set range, preventing structural failure due to misoperation. Furthermore, the cooperation between the limiting rod of the installation sleeve and the limiting track of the connecting sleeve, along with the positioning protrusion, enables rapid positioning and installation of the nozzle body, ensuring docking of the connecting pipe and the inlet pipe without repeated calibration, further improving nozzle replacement efficiency and installation accuracy.

[0040] 3. This device uses a dispersing element to divide the nozzle body into a first chamber and a second chamber. The turbine blades inside the dispersing sleeve rotate synchronously with the abrasive flow, working in conjunction with the flow channel to achieve uniform abrasive dispersion and avoid uneven coating caused by abrasive agglomeration. The multiple dispersing channels in the dividing sleeve further refine the abrasive flow, ensuring uniform spraying of the abrasive onto the abrasive cloth surface and improving product quality. The transparent observation sleeve and observation airbag design allow for real-time observation of the abrasive flow status inside the nozzle, facilitating timely detection of blockages, leaks, and other abnormalities by operators, enabling proactive maintenance and preventing further escalation of the malfunction. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the assembled structure provided in an embodiment of this application;

[0043] Figure 2 Exploded views provided for embodiments of this application;

[0044] Figure 3 This is a schematic diagram of the disassembled nozzle body provided in an embodiment of this application;

[0045] Figure 4 This is a schematic diagram of the structure of the connecting sleeve and the starting ring after disassembly provided in an embodiment of this application.

[0046] Figure 5 Right view provided for an embodiment of this application;

[0047] Figure 6 for Figure 5 A partial cross-sectional view of region AA in the middle;

[0048] Figure 7 Right view of the mounting bracket provided in an embodiment of this application;

[0049] Figure 8 for Figure 7 Cross-sectional view of the BB region;

[0050] Figure 9 This is a schematic diagram of the internal structure of the connecting sleeve provided in an embodiment of this application;

[0051] Figure 10 This is a schematic diagram of the disassembled structure of the components provided in the embodiments of this application;

[0052] Figure 11 This is a schematic diagram of the startup ring provided in an embodiment of this application.

[0053] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0054] 11. Mounting bracket; 12. Connecting sleeve; 13. Connecting pipe; 14. Annular groove; 15. Rotating groove; 16. Limiting track; 17. Positioning protrusion; 21. Spray head body; 22. Mounting sleeve; 23. Nozzle; 24. Seal; 25. Movable box; 26. Through groove; 27. Connecting pipe; 28. Connecting joint; 29. ​​Limiting rod; 31. Spraying equipment; 32. Through pipe; 33. Observation sleeve; 34. Observation airbag; 41. Starting ring; 42. First locking block; 43. Second locking block; 44. First magnetic attraction part; 45. Second magnetic attraction; 51. Dispersion sleeve; 52. Cover plate; 53. Rotating shaft; 54. Turbine fan blade; 55. Separating sleeve; 56. Separating plate.

[0055] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] See Figures 1-11This application provides a quick-change abrasive coating nozzle device, including a mounting frame 11 and a nozzle body 21. The mounting frame 11 serves as the supporting foundation for the entire device and is installed on the spraying equipment 31. Its main function is to provide stable mounting support for the nozzle body 21, so that the nozzle body 21 remains in a fixed position during the abrasive coating operation, avoiding positional displacement caused by equipment vibration and ensuring the stability of the abrasive coating operation.

[0058] The nozzle body 21 is located below the mounting bracket 11 and is the core carrier for abrasive flow and spraying. The nozzle body 21 is mounted on the mounting bracket 11 through a locking part. The mounting bracket 11 is provided with a connecting sleeve 12, which provides a precise assembly channel for the nozzle body 21 and the mounting bracket 11 to dock. Its internal space is adapted to the mounting structure on the top of the nozzle body 21, which can guide the nozzle body 21 to quickly achieve alignment with the mounting bracket 11, laying the foundation for subsequent locking and fixing.

[0059] The locking part includes multiple sets of locking components and a starting ring 41, which is a key structure for enabling quick assembly and disassembly of the nozzle body 21. The top of the nozzle body 21 is provided with an installation sleeve 22, which forms a nested fit with the connecting sleeve 12, providing installation and movement space for the locking components. The locking components can be in a compressed state or an expanded state through connection with the installation sleeve 22. The installation sleeve 22 passes through the connecting sleeve 12. When the locking component is in the expanded state, it can be locked in the connecting sleeve 12, and the locking action realizes the fixed connection between the nozzle body 21 and the mounting bracket 11, preventing relative displacement between the two during operation. When the locking component is switched to the compressed state, its locking relationship with the connecting sleeve 12 is released, which facilitates the disassembly and replacement of the nozzle body 21.

[0060] The starting ring 41 is fitted on the connecting sleeve 12 and can rotate flexibly around the axis of the connecting sleeve 12. By rotating the starting ring 41, the locking part can be selectively switched to a compressed state or an expanded state. The operator does not need to use additional tools and can complete the state switching of the locking part by simply rotating the starting ring 41, thereby realizing the quick installation or removal of the nozzle body 21, which greatly simplifies the operation process and reduces the downtime of the production line during nozzle replacement.

[0061] The connecting sleeve 12 is equipped with a connecting pipe 13, which is an important channel for abrasive delivery. One end of the nozzle body 21 is equipped with a liquid inlet pipe, and the other end is equipped with a nozzle 23. The liquid inlet pipe is used to receive abrasive from the connecting pipe 13, and the nozzle 23 is used to spray the abrasive evenly onto the surface of the abrasive cloth to complete the coating operation. The inlet end of the connecting pipe 13 is connected to the spraying equipment 31 through a connecting pipe, so that the abrasive in the spraying equipment 31 can be smoothly delivered to the connecting pipe 13. The outlet end of the connecting pipe 13 is connected to the liquid inlet pipe to ensure that the abrasive flows smoothly from the connecting pipe 13 into the nozzle body 21. The sealing element 24 between the two can prevent the abrasive from leaking from the joint, reduce abrasive waste, and at the same time prevent the leaked abrasive from contaminating the equipment or affecting the coating quality of the abrasive cloth.

[0062] See Figures 3-9 , Figure 11 The top of the mounting sleeve 22 is provided with multiple sets of movable boxes 25. The movable boxes 25 provide independent space for the installation and movement of the locking component, which can restrict the movement direction of the locking component and prevent the locking component from shifting when switching states. The locking component includes a first locking block 42, which is located inside the movable box 25 and can reciprocate along the inner wall of the movable box 25. Its movement trajectory is limited by the movable box 25 to ensure the stability of the locking component when switching states.

[0063] Multiple springs are installed inside the movable box 25. The springs are located between the inner wall of the movable box 25 and the first locking block 42. The springs have elastic extension and contraction characteristics, and can contract when force is applied and return to their initial shape when no force is applied. When the first locking block 42 is moved into the movable box 25 by an external force, the first locking block 42 compresses the spring, causing the spring to contract and deform. At this time, the locking member switches to the compressed state, releasing the locking relationship with the connecting sleeve 12. At this time, the mounting sleeve 22 can be pulled out from the connecting sleeve 12. When the first locking block 42 is not subjected to an external force, the spring remains in its uncompressed initial state. Under the action of elastic support, it pushes the first locking block 42 to move out of the movable box 25, so that the locking member is in the extended state, preparing for locking with the connecting sleeve 12.

[0064] A second locking block 43 is provided below the first locking block 42. The first locking block 42 is fixedly connected to the second locking block 43 via a connecting rod. The connecting rod can transmit the moving force of the first locking block 42, so that the second locking block 43 moves synchronously with the first locking block 42. The mounting sleeve 22 has a through groove 26 corresponding to the position of the second locking block 43. The through groove 26 provides a channel for the movement of the second locking block 43. The second locking block 43 passes through the through groove 26, and its range of movement is limited by the through groove 26 to prevent deviation or jamming.

[0065] The connecting sleeve 12 is divided into a locking part and a sleeve part. The inner diameter of the locking part is smaller than the inner diameter of the sleeve part. This size difference forms a stepped structure. An annular groove 14 is provided in the locking part. The shape of the annular groove 14 is adapted to the first locking block 42 and is used to accommodate the first locking block 42 in the extended state.

[0066] When the mounting sleeve 22 is inserted into the connecting sleeve 12 and the locking member is in the extended state, the first locking block 42 is locked in the annular groove 14 in the locking part. The position of the first locking block 42 is fixed by the limiting effect of the annular groove 14, thereby fixing the mounting sleeve 22 and the connecting sleeve 12. At this time, the second locking block 43 is located in the sleeve part and does not affect the locking effect of the first locking block 42. At the same time, it can help to judge the state of the locking member.

[0067] The connecting sleeve 12 has a rotating groove 15, which is an annular groove. The starting ring 41 is sleeved on the connecting sleeve 12 and locked in the rotating groove 15. The rotating groove 15 can restrict the axial movement of the starting ring 41, ensuring that the starting ring 41 can only rotate around the axis of the connecting sleeve 12 along the rotating groove 15. The rotating groove 15 is located at the sleeve part of the connecting sleeve 12, close to the second locking block 43, which facilitates the control of the locking state by magnetic attraction.

[0068] Both the first card block 42 and the second card block 43 are made of permanent magnets and have stable magnetism. The magnetic poles of the two are aligned to the same side to ensure that they can respond synchronously under magnetic attraction and avoid asynchronous movement due to differences in magnetic pole direction.

[0069] The inner side of the starting ring 41 is provided with a first magnetic attraction part 44. The first magnetic attraction part 44 is magnetic, and the side facing the first locking block 42 is set with the same pole. According to the principle of like poles repulsion, it can generate an inward repulsive force on the first locking block 42, pushing the first locking block 42 to move into the movable box 25, so that the locking part switches to the compressed state.

[0070] A second magnetic part 45 is provided inside the starting ring 41 on one side of the first magnetic part 44. The second magnetic part 45 is also magnetic, and its side facing the first locking block 42 is set with opposite poles. According to the principle of opposite poles attracting each other, it can generate an inward attraction force on the first locking block 42, pulling the first locking block 42 outward towards the movable box 25, so that the locking member switches to the extended state.

[0071] The first magnetic attraction part 44 and the second magnetic attraction part 45 are spaced apart along the circumference of the starting ring 41, and their positions correspond one-to-one with the position of the first locking block 42, ensuring that the magnetic attraction can be precisely applied to the first locking block 42. When the operator rotates the starting ring 41, the first magnetic attraction part 44 or the second magnetic attraction part 45 can be selectively positioned facing the first locking block 42, and the movement of the first locking block 42 can be controlled by repulsive or attractive forces, thereby realizing the rapid switching between the compressed and expanded states of the locking member without the need for additional tools, simplifying the operation process.

[0072] Specific usage: When the nozzle body needs to be installed, rotate the starting ring 41 so that the first magnetic suction part 44 faces the first locking block 42. When moving the installation sleeve 22 towards the connecting sleeve 12, the limiting rod 29 on the outer side of the installation sleeve 22 slides along the limiting track 16 on the inner side of the connecting sleeve 12, guiding the installation sleeve 22 to embed into the connecting sleeve 12. The repulsive force generated by the first magnetic suction part 44 and the first locking block 42, being of the same polarity, has not yet completely pushed the first locking block 42 out. Simultaneously, during the embedding process of the installation sleeve 22, the inner wall of the connecting sleeve 12 will interact with the first locking block 42. The outer side of the block 42 contacts, thereby generating an inward pushing force on the first locking block 42, causing the first locking block 42 to move into the movable box 25. The locking member is in a compressed state. When it continues to move into the connecting sleeve 12, the first locking block 42 will always maintain contact with the inside of the connecting sleeve 12. Thus, even if the first locking block 42 is out of the range of action of the first magnetic suction part 44, it will remain in a compressed state due to the squeezing force of the inner wall of the connecting sleeve 12 until the mounting sleeve 22 can no longer move in the connecting sleeve 12, which means that the first locking block 42 has reached the annular groove 14.

[0073] At this time, the second locking block 43 is located directly opposite the first magnetic suction part 44. Then, the starting ring 41 is rotated so that the second magnetic suction part 45 faces the first locking block 42. The attraction generated by the opposite poles of the second magnetic suction part 45 and the first locking block 42 will pull the first locking block 42 out of the movable box 25. The first locking block 42 is inserted into the annular locking groove 14. At the same time, the second locking block 43 moves synchronously along the through groove 26, completing the locking and fixing of the installation sleeve 22 and the connecting sleeve 12, and the nozzle body is installed in place.

[0074] Please see Figure 2 , Figure 6 , Figure 10The nozzle body 21 contains a dispersing component, which is the core structure for achieving uniform abrasive dispersion. The dispersing component divides the internal space of the nozzle body 21 into a first chamber and a second chamber. Each chamber serves as a temporary storage and secondary dispersion mechanism for the abrasive, forming an orderly abrasive flow path. The dispersing component includes a dispersing sleeve 51, which is fixedly installed inside the nozzle body 21, spanning between the first and second chambers. It acts as an intermediate carrier connecting the two chambers, allowing the first and second chambers to be connected, thus enabling the abrasive to flow smoothly from the first chamber into the second chamber. Both ends of the dispersing sleeve 51 are equipped with cover plates 52, which close the openings at both ends and provide support for internal components. Multiple sets of flow grooves are formed on the side walls of both the cover plates 52 and the dispersing sleeve 51, providing channels for the abrasive to enter and exit, ensuring that the abrasive can uniformly enter the dispersing sleeve 51 and flow out to the second chamber. The dispersing sleeve 51 is equipped with a rotating shaft 53 and a turbine blade 54. The two ends of the rotating shaft 53 are rotatably connected to two sets of cover plates 52, so that the rotating shaft 53 can rotate flexibly around its own axis. The turbine blade 54 is fixedly sleeved on the rotating shaft 53. When the abrasive flows through the dispersing sleeve 51, it will drive the turbine blade 54 to rotate, thereby stirring the abrasive, breaking the agglomeration of the abrasive, and achieving the initial uniform dispersion of the abrasive.

[0075] A partition sleeve 55 is installed in the second chamber, located between the dispersing element and the nozzle 23. The partition sleeve 55 receives the initially dispersed abrasive from the dispersing element and further optimizes the abrasive distribution. Multiple sets of partition plates 56 are evenly arranged along the internal space of the partition sleeve 55, forming multiple independent dispersion channels. Each dispersion channel corresponds to a different area of ​​the nozzle 23. After the abrasive enters the partition sleeve 55, it is distributed into each dispersion channel. The guiding effect of the dispersion channels ensures that the abrasive remains evenly distributed as it flows towards the nozzle 23, preventing localized abrasive accumulation or sparse distribution, thus guaranteeing uniform spraying from the nozzle 23.

[0076] Please see Figure 2 , Figure 3 , Figure 9A connecting pipe 27 is provided on one side of the nozzle body 21. One end of the connecting pipe 27 is connected to the first chamber and serves as the main channel for the abrasive to enter the nozzle body 21. A connecting joint 28 is provided on one side of the nozzle body 21 corresponding to the position of the connecting pipe 27. One end of the connecting joint 28 is fixedly connected to the connecting pipe 27, and the other end is connected to an external liquid supply device through a connecting pipe to achieve stable delivery of the abrasive. The connecting pipe 27 is located above the dispersing element, allowing the abrasive delivered by the external liquid supply device to enter from the top of the first chamber and flow downwards naturally under gravity, smoothly entering the dispersing element for dispersion processing, thus preventing the abrasive from stagnating in the first chamber.

[0077] A through-tube 32 is provided on the nozzle body 21. One end of the through-tube 32 is connected to the second chamber, and the installation position of the through-tube 32 is close to the nozzle 23, which can reflect the abrasive pressure status near the spray outlet in the second chamber in real time. An observation sleeve 33 is provided on one side of the nozzle body 21. The observation sleeve 33 is fixedly connected to the nozzle body 21. The end of the through-tube 32 away from the second chamber is located inside the observation sleeve 33. An observation airbag 34 is sleeved on the through-tube 32. The observation airbag 34 is made of elastic material. When the abrasive pressure in the second chamber changes, it will be transmitted to the observation airbag 34 through the through-tube 32, causing the observation airbag 34 to expand or contract. The outer surface of the observation airbag 34 is coated with a colored coating, which makes it easy for operators to quickly observe changes in the shape of the observation airbag 34. The observation sleeve 33 is made of transparent material, which does not obstruct the operator's view, allowing the operator to clearly see the state of the observation airbag 34 through the observation sleeve 33, thereby judging whether the abrasive pressure in the second chamber is normal and promptly detecting abnormalities such as blockage or insufficient material supply.

[0078] Multiple sets of limiting rods 29 are provided on the outer side of the mounting sleeve 22, and are evenly distributed along the circumference of the mounting sleeve 22. Multiple sets of limiting tracks 16 are provided on the inner side of the connecting sleeve 12 corresponding to the positions of the limiting rods 29. The limiting tracks 16 extend along the axial direction of the connecting sleeve 12, and their shape and size are adapted to the limiting rods 29. During installation, the limiting rods 29 are engaged within the limiting tracks 16, forming a sliding fit. The limiting tracks 16 restrict the movement direction of the limiting rods 29, thereby limiting the relative movement trajectory of the mounting sleeve 22 and the connecting sleeve 12. This ensures that the mounting sleeve 22 can only be inserted and removed along the axial direction of the connecting sleeve 12, preventing circumferential rotation or offset during installation. This allows the locking element on the mounting sleeve 22 to accurately align with the annular groove 14 inside the connecting sleeve 12, providing guidance for rapid installation.

[0079] Positioning protrusions 17 are provided on the outer side of the connecting sleeve 12 and the outer side of the mounting sleeve 22, respectively. The positions of the two sets of positioning protrusions 17 are matched with each other. When the mounting sleeve 22 is inserted into the connecting sleeve 12 to the preset position, the two sets of positioning protrusions 17 will align with each other, providing the operator with a visual prompt for proper installation and avoiding the locking effect due to excessive or shallow insertion. At the same time, it further strengthens the circumferential positioning of the mounting sleeve 22 and the connecting sleeve 12, reducing the relative displacement caused by vibration during operation.

[0080] A limiting structure is provided between the starting ring 41 and the connecting sleeve 12. This limiting structure can be in the form of a protrusion and a groove, for example, a limiting protrusion is provided on the inner side of the starting ring 41, and an arc-shaped limiting groove is opened on the inner wall of the rotating groove 15 of the connecting sleeve 12, with the limiting protrusion locked in the arc-shaped limiting groove. Through this limiting structure, the rotation range of the starting ring 41 is limited to the length range of the arc-shaped limiting groove, and it can only rotate back and forth within a set angle, unable to rotate 360 ​​degrees completely. This design ensures that when the starting ring 41 rotates, the first magnetic attraction part 44 and the second magnetic attraction part 45 can only switch within the effective range of the corresponding first locking block 42, avoiding misalignment between the magnetic attraction part and the first locking block 42 due to excessive rotation, ensuring the reliability of the locking state switching, and preventing structural damage caused by excessive rotation angle by the operator, simplifying the operation process and improving ease of use.

[0081] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0082] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-change abrasive coating nozzle device, comprising a mounting bracket (11) and a nozzle body (21), characterized in that: The mounting bracket (11) is mounted on the spraying equipment (31); The nozzle body (21) is located below the mounting bracket (11). The nozzle body (21) is mounted on the mounting bracket (11) by a locking part. A connecting sleeve (12) is provided on the mounting bracket (11). The locking part includes multiple sets of locking components and a starting ring (41). The nozzle body (21) is provided with an installation sleeve (22) at the top. The locking component is connected to the installation sleeve (22) to form a compressed state and an expanded state. The installation sleeve (22) passes through the connecting sleeve (12). When the locking component is in the expanded state, it can be locked in the connecting sleeve (12). The starting ring (41) is sleeved on the connecting sleeve (12). By rotating the starting ring (41), the locking member can be selectively switched to a compressed state or an expanded state. The connecting sleeve (12) is provided with a connecting pipe (13). One end of the nozzle body (21) is provided with a liquid inlet pipe, and the other end is provided with a nozzle (23). The inlet end of the connecting pipe (13) is connected to the spraying equipment (31) through a connecting pipe. The outlet end of the connecting pipe (13) is connected to the liquid inlet pipe, and a sealing element (24) is provided between the two.

2. The quick-change abrasive coating nozzle device according to claim 1, characterized in that: The top of the mounting sleeve (22) is provided with multiple sets of movable boxes (25), and the locking member includes a first locking block (42), which is located inside the movable box (25) and moves along the movable box (25); Multiple sets of springs are provided inside the movable box (25), and the springs are located between the movable box (25) and the first locking block (42); When the first locking block (42) is moved into the movable box (25) by an external force, the first locking block (42) squeezes the spring, and the locking member is in a compressed state; When the first locking block (42) is not subjected to external force, the spring is not compressed to the initial state, and the locking member is in the extended state under the elastic support of the spring.

3. The quick-change abrasive coating nozzle device according to claim 2, characterized in that: A second block (43) is provided below the first block (42). The first block (42) is connected to the second block (43) through a connecting rod. The second block (43) moves with the first block (42). The mounting sleeve (22) has a through groove (26) corresponding to the second block (43). The second block (43) passes through the through groove (26). The connecting sleeve (12) is provided with a locking part and a sleeve part. The inner diameter of the locking part is smaller than the inner diameter of the sleeve part, and an annular groove (14) is provided in the locking part. When the mounting sleeve (22) is inserted into the connecting sleeve (12) and the locking member is in the extended state, the first locking block (42) is locked in the annular groove (14) in the locking part, and the second locking block (43) is located in the sleeve part.

4. The quick-change abrasive coating nozzle device according to claim 3, characterized in that: The connecting sleeve (12) is provided with a rotating groove (15), and the starting ring (41) is sleeved on the connecting sleeve (12) and locked in the rotating groove (15), so that the starting ring (41) can rotate around the axis of the connecting sleeve (12) along the rotating groove (15), and the rotating groove (15) is located at the sleeve part of the connecting sleeve (12); Both the first card block (42) and the second card block (43) are permanent magnet blocks, and their magnetic poles facing the same side are aligned. The inner side of the starting ring (41) is provided with a first magnetic attraction part (44), and the first magnetic attraction part (44) and the first card block (42) are arranged with the same pole on the opposite side to form a repulsive force; The starting ring (41) is provided with a second magnetic part (45) located on one side of the first magnetic part (44). The second magnetic part (45) and the first card block (42) are arranged with opposite poles facing each other to form an attraction. The first magnetic suction part (44) and the second magnetic suction part (45) are spaced apart along the circumferential direction of the starting ring (41), and their positions correspond to the positions of the first locking block (42). Rotating the starting ring (41) can selectively make the first magnetic suction part (44) or the second magnetic suction part (45) face the first locking block (42), thereby realizing the switching between the compression state and the expansion state of the locking member.

5. The quick-change abrasive coating nozzle device according to claim 1, characterized in that: The nozzle body (21) is provided with a dispersing component, which divides the nozzle body (21) into a first chamber and a second chamber. The dispersing component includes a dispersing sleeve (51), which is installed inside the nozzle body (21), spans between the first chamber and the second chamber, and the first chamber and the second chamber are connected by the dispersing sleeve (51); Both ends of the dispersion sleeve (51) are provided with cover plates (52). One set of cover plates (52) and the dispersion sleeve (51) are provided with multiple sets of flow grooves. The dispersion sleeve (51) is provided with a rotating shaft (53) and a turbine blade (54). The two ends of the rotating shaft (53) are respectively rotatably connected to the two sets of cover plates (52). The turbine blade (54) is sleeved on the rotating shaft (53).

6. The quick-change abrasive coating nozzle device according to claim 5, characterized in that: The second chamber is provided with a partition sleeve (55), which is located between the dispersing member and the nozzle (23). The partition sleeve (55) is provided with multiple sets of partition plates (56), and the partition sleeve (55) forms multiple sets of dispersing channels through the multiple sets of partition plates (56).

7. The quick-change abrasive coating nozzle device according to claim 5, characterized in that: A connecting pipe (27) is provided on one side of the nozzle body (21), the connecting pipe (27) is in communication with the first chamber, and a connector (28) is provided on one side of the nozzle body (21), one end of the connector (28) is connected to the connecting pipe (27), and the other end is connected to an external liquid supply device through a connecting pipe; The connecting pipe (27) is located above the dispersing element.

8. The quick-change abrasive coating nozzle device according to claim 7, characterized in that: The nozzle body (21) is provided with a through pipe (32), which communicates with the second chamber and is close to the nozzle (23). An observation sleeve (33) is provided on one side of the nozzle body (21). The observation sleeve (33) is connected to the nozzle body (21). The through pipe (32) is located inside the observation sleeve (33), and an observation airbag (34) is sleeved on the through pipe (32). The outer surface of the observation airbag (34) is coated with a colored coating. The observation sleeve (33) is made of transparent material.

9. The quick-change abrasive coating nozzle device according to claim 1, characterized in that: Multiple sets of limiting rods (29) are provided on the outside of the mounting sleeve (22), and multiple sets of limiting rails (16) are provided on the inside of the connecting sleeve (12). The limiting rods (29) are locked in the limiting rails (16). The outer side of the connecting sleeve (12) is provided with a positioning protrusion (17) corresponding to the outer side of the mounting sleeve (22).

10. A quick-change abrasive coating nozzle device according to claim 9, characterized in that: A limiting structure is provided between the starting ring (41) and the connecting sleeve (12), so that the starting ring (41) can only rotate back and forth within a set range through the limiting structure.

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