A powder processing device for a powder spraying system

Abstract

The utility model belongs to the thermal cup spraying manufacturing technical field especially relates to a kind of waste powder processing device of powder spraying system, by setting up aggregate passage, cyclone separation structure and negative pressure suction mechanism, the multistage collection and efficient separation of waste powder are realized, powder disorder can be reduced and scattered, raw material waste is reduced, and stable filtering effect is maintained by filter cartridge and rotary cleaning mechanism, to ensure that the exhaust gas is clean, improve the workshop air environment.Compared with traditional device, the scheme can significantly shorten the powder changing time, from the original about two hours to 15 minutes, greatly improve the production efficiency, reduce the color difference risk, meet the spraying demand of multi-color fast switching, with the comprehensive advantages of energy saving, environmental protection and high efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of thermos cup spraying manufacturing technology, and in particular relates to a waste powder treatment device for a powder spraying system. Background Technology

[0002] Insulated cups, as everyday beverage containers that effectively delay the loss of heat from liquids, are widely used in people's lives due to their excellent heat preservation performance and convenient use. They are usually composed of a stainless steel or ceramic inner liner and an outer shell, forming a vacuum insulation structure between the inner and outer layers to ensure the long-term heat preservation function of the liquid. As consumers' requirements for the appearance quality, corrosion resistance and service life of insulated cups continue to increase, surface spraying has become a necessary step in the manufacturing process to ensure the decorative effect and durability of the product. Powder coating is widely used due to its advantages such as high mechanical strength, good aging resistance and environmental protection.

[0003] Currently, the powder coating process for thermos cups mainly includes steps such as feeding, dust removal, powder coating, curing, cooling, and unloading. To prevent powder from affecting the powder coating production line, existing production lines are generally equipped with dust removal systems to collect and treat excess powder generated during the powder coating process, reducing the impact on subsequent processes and environmental pollution. However, the dust removal systems in existing powder coating systems still have several problems in application:

[0004] First: Existing powder recycling devices mostly use large cyclone separators, which are bulky and occupy a lot of space, limiting workshop layout. This makes it difficult for small and medium-sized enterprises to achieve a compact layout and efficient use of space. At the same time, the pipelines of large cyclone separators are generally long, and powder is prone to accumulate or remain during transportation, resulting in cleaning difficulties and incomplete recycling, thereby increasing powder waste rate and production costs.

[0005] Second: Regarding powder recovery methods, some existing technologies use cylindrical filters combined with vibration cleaning to remove powder particles accumulated on the filter element surface. Although the powder can be shaken off periodically, most of the shaken-off powder is directly deposited at the bottom of the equipment or on the ground and cannot be effectively collected and reused. As the production cycle is extended, the accumulation of deposited powder becomes more and more serious, and it is necessary to arrange a shutdown for cleaning. This not only causes production interruption but also increases labor costs. At the same time, because the powder is mixed with impurities, it is difficult to reuse, resulting in low resource utilization and prominent environmental pollution problems.

[0006] Third: In the powder and color changing process, existing powder spraying systems generally suffer from long processing times and low efficiency. Traditional color changing requires thorough cleaning of the powder spraying chamber, powder supply pipeline, and powder spraying gun to avoid mixing of different colored powders. Due to the long pipeline and the ease with which residues can remain inside, the cleaning process is cumbersome and time-consuming, often taking 1 to 2 hours or even longer. This not only seriously affects production efficiency but also causes the production line to stagnate for a long time, reducing equipment utilization. Moreover, even after a long cleaning period, there may still be residual powder mixed with new powder, resulting in color differences or unstable quality of the sprayed products.

[0007] Fourth: Existing powder coating systems also have significant shortcomings in powder booth design. Many systems adopt a single powder booth structure, which requires a complete stop of powder coating operations and cleaning before powder can be supplied again when a color needs to be changed. This design results in low color change efficiency and cannot meet the flexible production needs of multi-color products. Although some systems have tried to adopt a multi-powder booth design, the lack of effective isolation measures makes it easy for powder to cross-color between different powder booths, which affects the stability of coating quality and increases the difficulty of production management.

[0008] In summary, existing thermos cup powder spraying systems and their waste powder treatment devices have prominent problems in terms of large footprint, long powder replacement time, high powder waste rate, and high equipment and operating costs. They are difficult to meet the requirements of modern thermos cup production for efficient color change, refined recycling, compact layout, and quality stability. Therefore, it is urgent to propose a new powder spraying system waste powder treatment device to solve the above technical problems. Utility Model Content

[0009] This invention aims to solve at least one of the problems existing in the current thermos cup spraying process, such as serious powder waste, low waste powder recycling efficiency, and long powder replacement operation time.

[0010] In view of this, the present invention provides a waste powder treatment device for a powder spraying system. By optimizing the powder recovery channel, airflow separation design and modular spraying unit, it achieves efficient collection and recycling of waste powder. At the same time, by optimizing the quick connection channel and recovery structure, it significantly shortens the powder replacement time, thereby reducing raw material consumption, reducing environmental pollution and improving production efficiency. Overall, it improves the spraying quality and process stability, achieving the technical effects of energy saving, environmental protection, simple operation and high efficiency.

[0011] This application discloses a waste powder treatment device for a powder spraying system, comprising:

[0012] The powder coating processing center has a dust removal chamber, a powder coating chamber, and a powder cleaning chamber arranged sequentially inside. A ground chain conveyor device drives the cups through the dust removal chamber, the powder coating chamber, and the powder cleaning chamber in sequence.

[0013] The powder spraying chamber has a through channel groove for the ground chain conveyor to drive the cups in and out. Inside the chamber, there is a shielding device to cover the ground chain conveyor passing through the powder spraying chamber. A material collection channel is set between the shielding device and the inner wall of the powder spraying chamber. A collection pipe is set at the lower end of the material collection channel.

[0014] The negative pressure suction device includes a dust collection chamber and a negative pressure generating chamber. A filter cartridge is installed inside the dust collection chamber, and a negative pressure fan is installed inside the negative pressure generating chamber. The fan is used to draw dust-laden gas from the dust collection chamber and / or the powder spraying chamber and / or the powder cleaning chamber into the dust collection chamber, where it is filtered by the filter cartridge and then discharged into the external environment.

[0015] In some examples of this application, a cyclone separator is provided between the powder spraying chamber and the negative pressure suction device. The cyclone separator includes a cylinder with an air inlet on the side of the cylinder. The air inlet is connected to a collection pipe through a powder return pipe. A tapered pipe is provided at the lower end of the cylinder, and a collection device is provided at the lower end of the tapered pipe.

[0016] In some examples of this application, two powder spraying chambers are provided, each powder spraying chamber is provided with a corresponding powder spraying gun, each powder spraying chamber is connected to a corresponding cyclone separator through an independent powder return pipe, and the cylinders of the two cyclone separators are connected to the negative pressure suction device through a dust removal pipe.

[0017] In some examples of this application, a powder supply center is provided between the two cyclone separators for supplying powder to the powder spraying gun, and the cyclone separators, the powder supply center, and the negative pressure suction device are arranged side by side on one side of the powder spraying processing center.

[0018] In some examples of this application, the dust removal chamber, the powder spraying chamber, and the powder cleaning chamber are arranged linearly along the direction of movement of the cups inside the powder spraying chamber. The cyclone separator, the powder supply center, and the negative pressure suction device are also arranged linearly and parallel to the direction of movement of the cups inside the powder spraying chamber. The dust removal pipe includes a collecting pipe, the length of which is parallel to the direction of movement of the cups inside the powder spraying chamber, and the projection of the collecting pipe on the ground is located between the projections of the powder spraying chamber and the powder supply center on the ground.

[0019] In some examples of this application, the powder return pipe includes a first connecting pipe, a second connecting pipe, a third connecting pipe, and a fourth connecting pipe, which are arranged in sequence. The first connecting pipe is located on one side of the powder spraying chamber and is connected to the discharge port through a first connecting port. The fourth connecting pipe is connected to the air inlet on the cylinder through a third connecting port at its end. The other end of the third connecting pipe is connected to the first connecting pipe, or the other end of the third connecting pipe is connected to the collecting pipe.

[0020] In some examples of this application, the central axis of the first connecting pipe is arranged perpendicular to the central axis of the third connecting pipe, the central axis of the second connecting pipe is arranged perpendicular to the central axis of the first connecting pipe and the central axis of the fourth connecting pipe, and the plane containing the central axes of the first and third connecting pipes is perpendicular to the plane containing the central axes of the first, second and fourth connecting pipes.

[0021] In some examples of this application, the cleaning chamber is connected to a negative pressure suction device via a recovery pipeline. The recovery pipeline includes a fifth connecting pipe and a sixth connecting pipe. The central axis of the fifth connecting pipe is arranged vertically, and the central axis of the sixth connecting pipe is arranged horizontally. The end of the fifth connecting pipe away from the sixth connecting pipe is connected to the cleaning chamber, and the end of the sixth connecting pipe away from the fifth connecting pipe is connected to the collecting pipe.

[0022] In some examples of this application, an explosion-proof device is provided on the manifold.

[0023] In some examples of this application, the negative pressure generating box is disposed above the dust collection box, and a first mounting plate is disposed at the connection between the two. The negative pressure fan is disposed on the first mounting plate, and a first connecting port is disposed on the first mounting plate. The first connecting port is disposed corresponding to the negative pressure fan and is connected to the dust collection box.

[0024] In some examples of this application, a connector is provided on the side wall of the dust collector housing for communicating with a collection pipe and a recovery pipe. A second mounting plate is provided inside the dust collector housing, which divides the internal space of the dust collector housing into an installation chamber and a filter chamber. An installation hole is provided on the second mounting plate, and the filter cartridge is installed in the installation hole. A conical discharge bucket is provided below the filter chamber, and a dust collection device is provided below the conical discharge bucket.

[0025] Compared with existing technologies, the waste powder treatment device of the powder spraying system described in this utility model has the following advantages:

[0026] 1. The improved powder coating system waste powder treatment device of this application can realize the efficient recycling and reuse of waste powder in the coating process. By optimizing the airflow guidance, separation and conveying structure, the powder is not easy to accumulate and scatter during the coating process, thereby ensuring the uniformity and adhesion of the coating. At the same time, it reduces powder waste and improves the production environment. Combined with modular coating units and pallet conveying system, the coating efficiency is significantly improved. Operators can complete equipment maintenance and powder replacement operations in a short time, reduce production downtime, improve the overall capacity and continuity of the production line, and significantly reduce raw material consumption and costs, making the coating process more green, environmentally friendly and economically sustainable.

[0027] 2. This application adopts a quick connection channel and modular design for powder changing operation, which reduces the powder changing process, which originally took about two hours, to 15 minutes after testing. This greatly improves production efficiency and ease of operation, reduces manual intervention and operational complexity, ensures production continuity and stability, and achieves efficient powder recovery and rapid replacement while maintaining coating quality, color consistency and adhesion. This optimizes the overall production process, improves equipment utilization and operational safety. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the powder spraying system structure according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the powder spraying system after removing part of the cover according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the assembly of the powder supply center, powder spraying treatment center, powder return device, and dust removal device according to an embodiment of the present utility model.

[0031] Figure 4 for Figure 3 A side view of the structure shown in the diagram from a second perspective;

[0032] Figure 5 An exploded structural diagram of the powder spraying chamber, powder spraying gun, powder return pipe, and cyclone separator assembly described in this embodiment of the utility model.

[0033] Figure 6 for Figure 5 The diagram shown is a rear view of the structure.

[0034] Figure 7 This is a schematic diagram of the assembly of the powder spraying chamber, powder spraying gun, and part of the ground chain transmission structure described in this embodiment of the utility model.

[0035] Figure 8 for Figure 7 A schematic diagram of the exploded structure shown in the figure;

[0036] Figure 9 for Figure 7 A cross-sectional structural schematic diagram of the structure shown;

[0037] Figure 10 This is a side view of the negative pressure suction device described in an embodiment of the present invention.

[0038] Figure 11 This is a cross-sectional view of the negative pressure suction device described in an embodiment of the present invention;

[0039] The markings in the diagram are as follows:

[0040] 100. Powder supply center; 200. Powder spraying treatment center; 300. Powder return device; 400. Dust removal device; 500. Drying device; 600. Cooling device; 700. Ground chain conveyor device;

[0041] 1. Powder spraying chamber; 101. Upper shell; 102. Through channel groove; 103. Opening; 104. First baffle plate; 1041. First inclined part; 1042. First vertical part; 105. Second baffle plate; 1051. Second inclined part; 1052. Second vertical part; 106. Base; 107. Collection pipe; 1071. Arc-shaped storage part; 1072. First guide part; 1073. Second guide part; 10 74. Discharge port; 108. Material passage gap; 109. Material collection channel; 1010. Shielding device; 2. Powder spraying gun; 3. Powder return pipe; 301. First connecting pipe; 302. Second connecting pipe; 303. Third connecting pipe; 304. Fourth connecting pipe; 305. First connection port; 306. Second connection port; 307. Third connection port; 308. Fourth connection port; 309. Fifth connection port; 4. Cyclone separator Device; 401, Support frame; 402, Cylinder; 403, Air inlet; 404, Air outlet duct; 405, Air outlet; 406, Conical tube; 407, Collection device; 408, Sealing plate; 5, Negative pressure suction device; 51, Dust collector; 511, Mounting chamber; 512, Filter chamber; 513, Conical discharge bucket; 514, Inspection plate; 52, Connector; 53, Dust collection device; 54, Negative pressure generating chamber; 5 41. Negative pressure fan; 55. First mounting plate; 551. First connecting port; 56. Second mounting plate; 561. Mounting hole; 57. Filter cartridge; 58. Rotating component; 59. Air storage device; 6. Dust removal pipeline; 601. Collecting pipe; 602. First air supply pipe; 603. Volute; 7. Dust removal chamber; 8. Powder cleaning chamber; 9. Recovery pipeline; 901. Fifth connecting pipe; 902. Sixth connecting pipe; 10. Explosion-proof device. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0043] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model 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.

[0044] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] like Figures 1-11 As shown, this application discloses a waste powder treatment device for a powder spraying system, comprising:

[0047] The powder spraying treatment center 200 is provided with a dust removal chamber 7, a powder spraying chamber 1 and a powder cleaning chamber 8 in sequence. The ground chain conveyor device 700 is used to drive the cups through the dust removal chamber 7, the powder spraying chamber 1 and the powder cleaning chamber 8 in sequence.

[0048] The powder spraying chamber 1 has through channel grooves 102 on its two opposite sides for the ground chain conveyor 700 to drive the cup in and out. A shielding device 1010 is provided inside the powder spraying chamber 1 between the two through channel grooves 102. The shielding device 1010 is used to cover the ground chain conveyor 700 passing through the powder spraying chamber 1. A material collection channel 109 is provided between the shielding device 1010 and the inner wall of the powder spraying chamber 1. A collection pipe 107 is provided at the lower end of the material collection channel 109.

[0049] The negative pressure suction device 5 includes a dust collection box 51 and a negative pressure generating box 54. The dust collection box 51 is connected to the dust collection chamber 7 and / or the cyclone separator 4 and / or the powder cleaning chamber 8 through a pipe. A filter cartridge 57 is installed inside the dust collection box 51. A negative pressure fan 541 is installed inside the negative pressure generating box 54. When the negative pressure fan 541 is working, it draws the gas containing dust from the dust collection chamber 7 and / or the powder spraying chamber 1 and / or the powder cleaning chamber 8 into the dust collection box 51 for filtration.

[0050] The waste powder treatment device for the powder spraying system described in this application, through reasonable functional zoning and compact structural arrangement, enables the efficient recycling and reuse of waste powder generated during the powder spraying production of thermos cups. The powder spraying treatment center 200 is sequentially equipped with a dust removal chamber 7, a powder spraying chamber 1, and a powder cleaning chamber 8, allowing the cups to complete continuous processes under the drive of the ground chain conveyor 700. This not only reduces manual intervention but also ensures smooth transmission paths and tight process connections. The through-channel grooves 102 on both sides of the powder spraying chamber 1 ensure automatic entry and exit of the cups, avoiding transmission obstructions caused by structural barriers. Simultaneously, the shielding device 1010 inside the powder spraying chamber 1 covers the ground chain conveyor 700, preventing powder from directly depositing on the surface of the conveyor and reducing cleaning burden. The collection channel 109 formed between the shielding device 1010 and the inner wall of the powder spraying chamber 1 effectively guides scattered powder into the collection pipe 107, allowing the powder to be collected and reused. The design enables orderly collection rather than random dispersion of powder, improving powder collection efficiency and preventing environmental pollution caused by powder scattering. The collection pipe 107 is connected to the negative pressure suction device 5, and the suction gas is filtered through the dust collector 51 and the internal filter cartridge 57. The filter cartridge 57 traps the dust, and the filtered clean gas is discharged into the environment, avoiding pollution emissions. In addition, a cleaning chamber 8 is set after the powder spraying chamber 1. The residual powder in the cleaning chamber 8 will also enter the filtration process under the action of negative pressure suction, preventing the residual powder from entering the subsequent drying stage and causing solidification and adhesion. The entire system effectively purifies the air quality through the synergistic effect of the dust collector 7, the powder spraying chamber 1, the cleaning chamber 8, and the negative pressure suction device 5. The entire production process is continuous and automated under the drive of the ground chain transmission device, which avoids the efficiency reduction caused by manual intervention and ensures the continuity and stability of system operation.

[0051] As a preferred example of this application, a cyclone separator 4 is provided between the powder spraying chamber 1 and the negative pressure suction device 5. The cyclone separator 4 includes a cylinder 402, an air inlet 403 is opened on the side of the cylinder 402, the air inlet 403 is connected to the collection pipe 107 through the powder return pipe 3, a tapered pipe 406 is provided at the lower end of the cylinder 402, and a collection device 407 is provided at the lower end of the tapered pipe 406. This application incorporates a cyclone separator 4, which is connected to the collection pipe 107 of the powder spraying chamber 1 via a powder return pipe 3. Under the action of the negative pressure suction device 5, the collected powder can be promptly sent to the cyclone separator 4. The cyclone separator 4, through the cooperation of the cylinder 402 and the conical tube 406, utilizes centrifugal force to quickly separate large powder particles and allow them to fall into the collection device 407, ensuring that the powder is initially and effectively recovered. Meanwhile, the airflow containing fine dust enters the negative pressure suction device 5 for secondary filtration, thus forming a closed loop of powder collection, separation, filtration, and purification. This allows the powder scattered during the powder spraying process to be recovered and reused to the maximum extent.

[0052] The waste powder treatment device for the powder spraying system disclosed in this application, by setting a shielding device 1010 and a material collection channel 109 in the powder spraying chamber 1, enables the scattered powder to be collected and effectively recycled. Combined with the cyclone separator 4 for rapid separation of large particles and the negative pressure suction device 5 for secondary filtration of fine dust, a multi-stage treatment system of powder recovery and gas purification is formed. This not only improves the powder utilization rate and reduces production costs, but also improves the air quality in the workshop and ensures the safety of the working environment. At the same time, the ground chain transmission device 700 realizes the continuous automatic operation of the cups in the dust removal, powder spraying and powder cleaning stages, which improves production efficiency and reduces the burden of manual operation. The overall structure is compact and occupies a small area, which is convenient for flexible layout in production lines of different sizes. In addition, the system can shorten the time for changing powder and color, reduce the color difference problem caused by residual powder, and ensure the appearance quality and consistency of products, thus taking into account economy, environmental protection and adaptability.

[0053] As a preferred example of this application, two powder spraying chambers 1 are provided, each powder spraying chamber 1 is provided with a powder spraying gun 2, each powder spraying chamber 1 is connected to one of the cyclone separators 4 through a set of powder return pipes 3, and the cylinders 402 of the two cyclone separators 4 are connected to the negative pressure suction device 5 through dust removal pipes 6. In the example of this application, by setting up two powder spraying chambers 1, each equipped with an independent powder spraying gun 2 and an independent powder return pipe 3, it is possible to carry out different color spraying operations on cups simultaneously. The waste powder generated during the spraying process is independently introduced into the corresponding cyclone separator 4 through their respective collection channels 109 and powder return pipes 3, avoiding mixing of powders of different colors and ensuring the purity and reuse value of the recovered powder. At the same time, after the two cyclone separators 4 complete the initial separation of large particles of powder, the airflow with a small amount of dust discharged by them is merged through the dust removal pipe 6 and uniformly drawn into the dust removal box 51 by the negative pressure suction device 5. After being filtered by the filter cartridge 57, the clean gas is discharged. Thus, while maintaining the independence of the recovery path of each color powder, the centralized purification of airflow and dust is achieved. This takes into account both the flexibility and independence of multi-color spraying, saves additional equipment costs, and ensures that the overall operation of the production line is more efficient and stable. As a preferred example of this application, an opening 103 is provided on the powder spraying chamber 1, and the opening 103 is located on one side between the two through channel slots 102. The powder spraying gun 2 is positioned at the corresponding opening 103 for powder spraying onto the cup that is driven by the ground chain conveyor 700 inside the powder spraying chamber 1. Preferably, the ground chain conveyor 700 is equipped with a rotation drive structure, which drives the cup located on the ground chain conveyor 700 inside the powder spraying chamber 1 to rotate while moving with the ground chain conveyor 700.

[0054] As a preferred example of this application, a powder supply center 100 is provided between the two cyclone separators 4. The powder supply center 100 is used to supply powder to the powder spraying gun 2. The cyclone separators 4, the powder supply center 100, and the negative pressure suction device 5 are arranged side by side on one side of the powder spraying processing center 200. In the example of this application, by configuring a powder supply center 100 between two cyclone separators 4, and arranging the cyclone separators 4, powder supply center 100, and negative pressure suction device in a parallel manner on one side of the powder spraying processing center, the three core links of powder recovery, powder supply, and negative pressure suction are concentrated in the same area. This not only makes the pipeline connections between the various devices more compact and reasonable, shortens the transmission path of powder from recovery to resupply, and reduces the possible stagnation and waste of powder during transmission, but also facilitates workers to conduct unified inspection and maintenance of related equipment, reducing labor and time costs. In addition, the parallel compact layout saves workshop space, makes the overall powder spraying system more regular and orderly, improves the manageability and scalability of equipment layout, and provides convenient conditions for subsequent process optimization and equipment expansion.

[0055] As a preferred example of this application, the dust removal chamber 7, the powder spraying chamber 1, and the powder cleaning chamber 8 are arranged linearly along the direction of movement of the cups in the powder spraying chamber 1. The cyclone separator 4, the powder supply center 100, and the negative pressure suction device 5 are arranged linearly and parallel to the direction of movement of the cups in the powder spraying chamber 1. The dust removal pipe 6 includes a collecting pipe 601, the length direction of which is parallel to the direction of movement of the cups in the powder spraying chamber 1, and the projection of the collecting pipe 601 on the ground is located between the projections of the powder spraying chamber 1 and the powder supply center 100 on the ground. In the example of this application, by arranging the dust removal chamber 7, powder spraying chamber 1, and powder cleaning chamber 8 linearly according to the movement direction of the cup in the powder spraying chamber 1, and simultaneously arranging the cyclone separator 4, powder supply center 100, another cyclone separator 4, and negative pressure suction device 5 in parallel, and by placing the collecting pipe 601 of the dust removal pipeline 6 in line with the movement direction of the cup between the powder spraying chamber 1 and the powder supply center 100, a tight connection and path optimization between the equipment is achieved, reducing the complexity and redundancy in the pipeline layout, making powder recovery and circulation supply faster and more efficient, reducing waste caused by powder residue, improving powder utilization, and making the collection and purification of dusty gas more timely and effective, improving workshop air quality, and reducing the impact of dust on workers' health. In addition, the linear arrangement of the equipment makes the spatial layout more neat and reasonable, saves workshop space, facilitates daily inspection, maintenance and management by workers, reduces operation and maintenance costs, improves the continuity and reliability of the production process, reduces operating costs and energy consumption, and meets the multiple requirements of high efficiency, high quality and green environmental protection in the production of thermos cups.

[0056] As a preferred example of this application, the powder return pipe 3 includes a first connecting pipe 301, a second connecting pipe 302 and a fourth connecting pipe 304 arranged in sequence. The first connecting pipe 301 is disposed on one side of the powder spraying chamber 1 and is connected to the discharge port 1074 through a first connecting port 305. The fourth connecting pipe 304 is connected to the air inlet 403 on the cylinder 402 through a third connecting port 307 at its end. In the example of this application, by designing the powder return pipe 3 as a segmented structure with the first connecting pipe 301, the second connecting pipe 302, and the fourth connecting pipe 304 connected in sequence, the pipe can flexibly match the installation position relationship between the powder spraying chamber 1 and the cyclone separator 4, ensuring a smoother connection between the discharge port 1074 of the collection pipe 107 and the air inlet 403 of the cyclone separator 4, avoiding installation limitations caused by differences in spatial layout. The independence of each connecting pipe segment makes it more convenient to install and maintain, and can be disassembled or replaced individually without affecting the overall system operation, improving the flexibility of equipment operation and the convenience of maintenance. The segmented design of the pipe avoids excessive bending, reducing the accumulation and residue of powder during the conveying process, and the powder can be drawn more smoothly into the cyclone separator 4, achieving stable conveying efficiency, thereby further improving the reliability and continuity of the powder recovery process.

[0057] As a preferred example of this application, the powder return pipe 3 further includes a third connecting pipe 303, which is connected to the first connecting pipe 301, and the third connecting pipe 303 is connected to the powder supply center 100 through a second connecting port 306. As a preferred example of this application, by adding a third connecting pipe 303 to the powder return pipe 3 and connecting it to the first connecting pipe 301, and simultaneously connecting it to the powder supply center 100 via the second connecting port 306, the powder recovery range is not limited to the powder spraying chamber 1, but also covers the area of ​​the powder supply center 100. Thus, while the powder in the powder spraying chamber 1 is being recovered, the powder scattered in the powder supply center 100 can also be recovered, significantly improving the overall coverage of the powder recovery system, reducing environmental pollution caused by dust accumulation in the powder supply center 100, and improving the air quality in the workshop. At the same time, since the third connecting pipe 303 is connected to the first connecting pipe 301, the powder in the powder supply center 100 can share the same powder return pipe 3 and cyclone separator 4 with the powder recovered from the powder spraying chamber 1 to complete the transportation and collection, without the need for an additional independent recovery system. This avoids the waste of equipment resources and reduces the overall cost, making the entire powder recovery structure more centralized and integrated. This not only improves the utilization rate and recovery efficiency of the powder, but also optimizes the economic and environmental aspects of the system operation.

[0058] As a preferred example of this application, the plane containing the central axes of the first connecting pipe 301 and the third connecting pipe 303 is arranged perpendicularly to the plane containing the central axes of the first connecting pipe 301, the second connecting pipe 302 and the fourth connecting pipe 304, and the cyclone separation device 4 is disposed on the side of the powder spraying chamber 1 away from the powder spraying gun 2. In the example of this application, the first connection port 305 is disposed on the first connecting pipe 301, and the central axis direction of the first connection port 305 is perpendicular to the central axis direction of the first connecting pipe 301. The end of the first connecting pipe 301 away from the first connection port 305 is connected to the third connecting pipe 303 through the fourth connection port 308. The first connecting pipe 301 and the third connecting pipe 303 are on the same horizontal plane and their central axes are arranged perpendicularly. The central axis of the third connecting pipe 303 is arranged perpendicularly to the central axis of the second connection port 306. A fifth connection port 309 is disposed on the first connecting pipe 301 facing upward. The second connecting pipe 302 is connected to the first connecting pipe 301 through the fifth connection port 309. The central axes of the first connecting pipe 301, the second connecting pipe 302 and the fourth connecting pipe 304 are disposed in a plane perpendicular to the central axis of the third connecting pipe 303. The central axis of the second connecting pipe 302 is arranged perpendicularly to the centerline axis of the first connecting pipe 301 and the central axis of the fourth connecting pipe 304. This application arranges the central axes of the first connecting pipe 301 and the third connecting pipe 303 perpendicularly to the plane containing the central axes of the first connecting pipe 301, the second connecting pipe 302, and the fourth connecting pipe 304. This allows the return powder pipe 3 to be installed three-dimensionally within the workshop space, effectively avoiding congestion and interference problems caused by multiple pipes concentrated on the same plane. This further improves the overall rationality and compactness of the equipment layout, reduces the space occupied by the equipment, and at the same time, this vertically staggered arrangement reduces turning resistance when powder flows in different directions within the pipes, improves the smoothness of the conveying process, and reduces the risk of powder residue and blockage in the pipes. The cyclone separator 4 is located on the side away from the powder spraying gun 2, which further optimizes the spatial relationship between the powder spraying chamber 1 and the cyclone separator 4. This makes the length and direction of the powder return pipe 3 more reasonable, ensuring lower energy consumption and higher efficiency of the powder during the flow process, and further improving the powder recovery efficiency. In addition, since all connecting pipes are vertical or horizontal, the pipe routing is simple and clear, which facilitates manual inspection and maintenance. Overall, it not only optimizes the utilization rate of workshop space, but also improves the economy and environmental protection of powder recovery, reduces production costs, and enhances the continuity and controllability of the spraying process, providing a more reliable guarantee for the efficient operation of the thermos cup spraying production line.

[0059] As a preferred example of this application, the cleaning chamber 8 is connected to the negative pressure suction device 5 through the recovery pipeline 9. The recovery pipeline 9 includes a fifth connecting pipe 901 and a sixth connecting pipe 902. The central axis of the fifth connecting pipe 901 is arranged vertically, and the central axis of the sixth connecting pipe 902 is arranged horizontally. The end of the fifth connecting pipe 901 away from the sixth connecting pipe 902 is connected to the cleaning chamber 8, and the end of the sixth connecting pipe 902 away from the fifth connecting pipe 901 is connected to the collecting pipe 601. In the example of this application, by combining the vertically arranged fifth connecting pipe 901 with the horizontally arranged sixth connecting pipe 902, the residual powder in the cleaning chamber 8 can be guided to the collecting pipe 601 along a smoother path under negative pressure, thereby reducing the risk of powder retention and accumulation in the pipeline. This combined vertical and horizontal pipeline structure not only makes powder conveying more efficient and stable but also simplifies the pipeline layout, facilitating close integration with the entire dust removal system. This ensures that the residual powder recovered in the cleaning chamber can fully enter the dust removal and recovery process, preventing residual powder from contaminating or wasting subsequent processes, thus improving the waste powder recovery rate and the overall reliability of the system. By adopting the above structural layout, only effective physical isolation is needed for the powder supply center 100, the powder spraying chamber 1, the dust removal chamber 7, and the cleaning chamber 8, achieving optimized isolation for miniaturization and reducing the system's footprint.

[0060] As a preferred example of this application, an explosion-proof device 10 is provided on the manifold 601. In this example, by providing the explosion-proof device 10 on the manifold 601, dangerous energy and gas pressure inside the pipeline can be released promptly in case of excessively high dust concentration or abnormal temperature and pressure increases due to airflow friction during powder conveying and dust-laden gas collection, thereby preventing explosion hazards. This structure not only protects the manifold 601 and related equipment in the powder spraying system from damage but also ensures the safety of the workshop environment and personnel, significantly reducing the probability of downtime for maintenance and safety accidents caused by explosion risks. In some examples of this application, the explosion-proof device 10 is an explosion isolation device used in conjunction with a pressure relief device.

[0061] As a preferred example of this application, the shielding device 1010 includes a first shielding plate 104 and a second shielding plate 105. The first shielding plate 104 and the second shielding plate 105 are disposed on opposite sides of the cup movement direction in the powder spraying chamber 1, and a material passage gap 108 is formed between the first shielding plate 104 and the second shielding plate 105. In the example of this application, the first baffle 104 and the second baffle 105 are respectively disposed on both sides of the movement channel of the powder spraying chamber 1. The material passage gap 108 ensures that the cups can smoothly enter and exit the powder spraying chamber 1 along the transmission direction. This not only ensures the smoothness and stability of the cup transmission process, but also effectively prevents the scattered powder from spreading to the ground chain transmission device 700 area. This fundamentally reduces the risk of pollution of the transmission device and the potential for failure caused by powder accumulation, and extends the service life of the equipment. At the same time, the cooperation between the baffles on both sides and the inner wall of the powder spraying chamber 1 forms a directional guiding effect, which allows the scattered powder to quickly gather into the collection channel 109 and smoothly enter the collection pipe 107, thereby improving the integrity and efficiency of powder collection, reducing the random deposition of powder in the powder spraying chamber 1 and the need for secondary cleaning, and reducing labor and maintenance costs.

[0062] As a preferred example of this application, the first baffle plate 104 is disposed on the side of the material passage gap 108 near the opening 103. The first baffle plate 104 includes a first inclined portion 1041 and a first vertical portion 1042. The second baffle plate 105 is disposed on the side of the material passage gap 108 away from the opening 103. The second baffle plate 105 includes a second inclined portion 1051 and a second vertical portion 1052. The first inclined portion 1041 and the second inclined portion 1051 are both arranged inclined downward from the side near the material passage gap 108 to the side away from the material passage gap 108. The first vertical portion 1042 is disposed at the lowest end of the first inclined portion 1041 and is arranged downward. The second vertical portion 1052 is disposed at the lowest end of the second inclined portion 1051 and is arranged downward. In the example of this application, by setting inclined and vertical parts on the first baffle plate 104 and the second baffle plate 105 respectively, during the spraying process, the powder spray gun 2 sprays powder into the cup located at the material passage gap 108 through the opening 103. Some of the powder will deviate from the target due to airflow disturbance or rebound. At this time, the first baffle plate 104, which is close to the opening 103, prevents the powder from scattering through the inclined surface formed by its inclined part and guides it to slide down to the vertical part, and then smoothly enters the lower collection channel 109. The second baffle plate 105, which is far from the opening 103, intercepts and guides another part of the scattered powder through its inclined and vertical parts, so that it can also smoothly enter the collection channel 109. Finally, all the scattered powder is concentrated into the collection pipe 107 under the action of gravity and guidance, and is sent to the cyclone separator 4 for collection by the negative pressure suction device 5. The entire process of powder from scattering to centralized recycling is closed-loop, which does not interfere with the normal transmission of the cup and avoids the disorderly diffusion of powder in the powder spraying chamber.

[0063] Through the above structural design, the scattered powder generated during the spraying process can be smoothly guided by the inclined and vertical parts of the baffle plate without relying on additional power, avoiding the risk of powder accumulation and blockage on the surface of the baffle plate, thereby reducing the workload of maintenance and cleaning. The baffle plates on both sides of the material passage gap 108 form a tight protection and guidance system, reducing the pollution and wear caused by powder overflow into the transmission device area, ensuring the cleanliness and stability of the transmission device. The scattered powder can be efficiently collected and reused, which not only reduces the cost of raw materials, but also improves the resource utilization rate and environmental performance of the spraying operation, thereby improving the overall environment of the powder spraying chamber 1.

[0064] As a preferred example of this application, the powder spraying chamber 1 includes an upper shell 101 and a base 106. The through channel groove 102 and the shielding device 1010 are disposed on the upper shell 101. The collection pipe 107 is disposed on the base 106. The collection pipe 107 includes an arc-shaped receiving portion 1071, a first guiding portion 1072 and a second guiding portion 1073. The first guiding portion 1072 and the second guiding portion 1073 are disposed on opposite sides of the arc-shaped receiving portion 1071 along the direction of cup movement in the powder spraying chamber 1. The first guiding portion 1072 and the second guiding portion 1073 are both arranged in an inclined downward direction from the side away from the arc-shaped receiving portion 1071 to the side closer to the arc-shaped receiving portion 1071. The collection pipe 107 extends out of the outer side of the base 106 and is provided with an outlet 1074 for communicating with the powder return pipe 3. In the example of this application, by adopting a split structure of upper shell 101 and base 106, the powder spraying area and powder collection area are clearly separated, which facilitates independent installation and maintenance and improves the ease of operation of the device. The collection pipe 107 is composed of a guide section that slopes towards the arc-shaped receiving section 1071 on both sides and a receiving section located in the middle. This allows the powder falling into the collection channel 109 to be naturally guided to the receiving section for collection under the action of gravity, avoiding the accumulation and blockage of powder inside the collection pipe 107 and ensuring the smoothness of the powder conveying process. The setting of the arc-shaped receiving section 1071 further optimizes the powder aggregation effect, so that the powder introduced from both sides can quickly converge and be guided to the discharge port 1074. Then, through a smooth connection with the return powder pipe 3, it is ensured that the powder can be efficiently sucked to the cyclone separator 4 for secondary recycling. This not only improves the integrity of powder collection and recycling, but also reduces powder residue and waste, thereby effectively reducing raw material consumption and improving the overall recycling efficiency and the stable operation capability of the system.

[0065] In this application example, the inner wall of the powder spraying chamber 1 is made of a polymer antistatic material. During cleaning, the sprayed powder will not be adsorbed onto the powder spraying chamber 1 due to static electricity, making it easy and quick to clean.

[0066] As a preferred example of this application, the cyclone separator 4 further includes a support frame 401, the cylinder 402 is fixed on the support frame 401, and an air outlet 404 is provided inside the cylinder 402. The air outlet 404 is located at the upper end of the cylinder 402 and faces downwards. An air outlet 405 communicating with the negative pressure suction device 5 is provided at the center of the air outlet 404. In the example of this application, by fixing the cylinder 402 with the support frame 401, the cyclone separator 4 maintains a stable state during operation, avoiding the separation effect from being affected by vibration or positional displacement. After the airflow containing powder enters the cylinder 402 of the cyclone separator 4, the airflow forms a high-speed rotating motion along the inner wall of the cylinder 402. The powder is thrown against the cylinder wall by the centrifugal force generated by the rotation and gradually slides down to the collection device 407 at the bottom, while the lighter, cleaner airflow gradually gathers towards the center of the cylinder 402 during the rotation and rises to the air outlet 404 at the top. 04. The air outlet 405 at the center of the air outlet 404 is connected to the negative pressure suction device 5, which can provide a continuous and stable negative pressure environment, smoothly extracting the separated clean airflow and preventing the powder that has been thrown to the cylinder wall from being rolled back to the central area by the airflow. This not only improves the separation efficiency of powder and airflow, allowing more powder to settle smoothly into the lower collection chamber and reducing the possibility of powder loss with the airflow, but also ensures the cleanliness of the discharged airflow. Thus, while improving the powder recycling rate, it effectively reduces the dust content in the workshop air and improves the working environment. As a preferred example of this application, the air outlet 404 and the cylinder 402 are arranged concentrically.

[0067] As a preferred example of this application, a sealing plate 408 that can be opened and closed is provided at the lower end of the collecting device 407, and / or the collecting device 407 flows to the powder supply bucket of the powder supply center 100 through the powder return pipe and the vibrating screen. In the example of this application, a sealing plate 408 is provided at the lower end of the collection device 407. The sealing plate 408 is openable and closable, which allows the powder discharge process to be flexibly controlled according to actual needs. This avoids the disorderly falling of powder during non-operational states, which could lead to waste or pollution. It also facilitates cleaning of the collection chamber during maintenance, improving operational convenience and environmental cleanliness. In addition, the collection device 407 can be connected to a vibrating screen through a powder return pipe. The vibrating screen screens the powder during the powder return process, removing impurities and unusable particles to ensure the purity and usability of the returned powder. The screened powder is then transported to the powder supply bin of the powder supply center 100 and used directly as raw material for the powder spraying gun. This realizes the reuse of recycled powder, thereby reducing the consumption of new raw materials, lowering production costs, and improving the efficiency of powder recycling and the sustainability of the entire spraying process.

[0068] As a preferred example of this application, a volute 603 is provided at the upper end of the cylinder 402, the air inlet end of the volute 603 is connected to the air outlet 405, and the air outlet end of the volute 603 is connected to the collecting pipe 601 through the first air supply pipe 602. In the example of this application, by setting a volute 603 at the air outlet of the cyclone separator 4 and connecting the air outlet of the volute 603 to the collecting pipe 601 through the first air supply pipe 602, the turbulence of the airflow when it is discharged from the cyclone separator 4 can be effectively reduced, so that the airflow remains stable before entering the subsequent pipeline, thereby reducing flow resistance and improving airflow transmission efficiency. At the same time, the collecting pipe 601 is arranged parallel to the direction of cup movement in the powder spraying chamber 1, so that it can make full use of the space resources around the powder spraying chamber 1 and avoid interference with the running trajectory of the production line. While ensuring efficient airflow delivery, it also optimizes the coordination between the pipeline and the production space. This arrangement also makes it easy for the airflow generated by multiple cyclone separators 4 to enter the same collecting pipe 601 and be uniformly extracted by the negative pressure suction device 5, reducing pipeline complexity and improving the overall stability of the system operation, making the air emission in the workshop cleaner, reducing the impact of dust diffusion on the environment and operators, and also reducing energy consumption and operating costs, ultimately ensuring the environmental protection, continuity and efficiency of the thermos cup spraying production line. In some examples of this application, one end of the third connecting pipe 303 of the powder return pipe 3 is connected to the powder supply center 100 and the other end is connected to the collecting pipe 601, so that the powder scattered in the powder supply center 100 is directly sucked into the collecting pipe 601 by negative pressure for dust removal, avoiding dust pollution in the powder supply center 100 leading to defects after powder recovery.

[0069] As a preferred example of this application, the negative pressure generating box 54 is disposed above the dust removal box 51, and a first mounting plate 55 is disposed at the connection between the two. The negative pressure fan 541 is disposed on the first mounting plate 55, and a first connecting port 551 is disposed on the first mounting plate 55. The first connecting port 551 is disposed corresponding to the negative pressure fan 541 and is connected to the dust removal box 51. In the example of this application, by arranging the negative pressure generating box 54 above the dust collection box 51 and achieving a tight connection between the two through the first mounting plate 55 with the first connecting port 551, and the negative pressure fan 541 being directly mounted on the first mounting plate 55, the airflow can rise from the dust collection box 51 through the first connecting port 551 and directly enter the negative pressure fan 541. The entire process path is short and straight, effectively reducing resistance and loss in airflow transmission. At the same time, this stacked space utilization method avoids the equipment occupying too much space in the horizontal direction, making the layout of the entire powder spraying system in the workshop more compact and neat, saving production space and facilitating worker management. In addition, since the connection distance between the negative pressure fan 541 and the dust collection box 51 is extremely short, the gas suction efficiency is significantly improved, thereby ensuring that the waste powder recovery and dust-containing gas purification process is more efficient and stable. Ultimately, this not only improves the overall operating efficiency of the powder spraying system, but also reduces energy consumption costs and enhances the reliability and continuity of system operation.

[0070] As a preferred example of this application, a connector 52 is provided on the side wall of the dust collection box 51. The connector 52 is used to communicate with the collection pipe 601 and the recovery pipe 9. A second mounting plate 56 is provided inside the dust collection box 51. The second mounting plate 56 divides the internal space of the dust collection box 51 into a mounting cavity 511 and a filter cavity 512. A mounting hole 561 is provided on the second mounting plate 56. The filter cartridge 57 is installed in the mounting hole 561. A conical discharge bucket 513 is provided below the filter cavity 512. The dust collection device 53 is provided below the conical discharge bucket 513. In the example of this application, a connector 52 is provided on the side wall of the dust collector 51 to achieve smooth communication with the collection pipe 601 and the recovery pipe 9, so that the dust-laden gas can be efficiently introduced into the dust collector 51. The internal space is divided into the installation cavity 511 and the filter cavity 512 by the second mounting plate 56, making the gas treatment process more orderly and facilitating the stable installation of the filter cartridge 57. The filter cartridge 57 extends into the installation cavity 511 through the mounting hole 561 and is firmly installed with the second mounting plate 56, ensuring a stable and reliable filtration process. The conical discharge bucket 513 located below the filter cavity 512 can guide the trapped dust to fall smoothly and centrally, avoiding dust accumulation in the cavity, and finally flow into the dust collection device 53 below for efficient collection. Thus, the entire dust removal and collection process is simplified and optimized, which not only makes gas filtration and dust collection smoother and more efficient, but also reduces the complexity of cleaning and maintenance, while ensuring the continuous and stable operation of the waste powder treatment unit, effectively improving the safety and economy of powder spraying operations.

[0071] As a preferred example of this application, a rotating component 58 is provided inside the filter cartridge 57. The rotating component 58 is connected to a gas storage device 59 via a control valve, and the gas storage device 59 can drive the rotating component 58 to rotate by releasing gas. In this example, by configuring the rotating component 58 inside the filter cartridge 57 and connecting it to the gas storage device 59 via a control valve, when excessive dust accumulates on the surface of the filter cartridge 57, the gas released by the gas storage device 59 drives the rotating component 58 to rotate. The resulting airflow disturbance or mechanical force can promptly peel off the attached dust from the surface of the filter cartridge 57 and allow it to fall into the dust collection device 53 below. This automated cleaning method ensures that the filter cartridge 57 maintains a high filtration efficiency for a long time, avoiding the impact of dust blockage on gas permeability and filtration effect. It also reduces the frequency of manual disassembly and cleaning of the filter cartridge 57, saving manpower and maintenance time. While maintaining filtration stability, it also ensures the efficient and continuous operation of the entire waste powder treatment device. Furthermore, the peeled-off dust can be smoothly discharged and centrally recycled, avoiding secondary pollution caused by dust accumulation inside the equipment. During the dust removal process, dust-laden gas enters the dust collector 51 through connector 52 and then enters the filter chamber 512. As the gas flows upward into the filter cartridge 57, dust is trapped on the surface of the filter cartridge 57. Clean gas passes through the filter cartridge 57, enters the installation chamber 511 through the installation hole 561, and is then discharged by the negative pressure fan 541. When the dust accumulation on the surface of the filter cartridge 57 is thick and affects the air permeability, the control valve opens, and the gas storage device 59 releases compressed gas to drive the rotating part 58 to rotate inside the filter cartridge 57. When the rotating part 58 moves, it will create turbulent airflow inside the filter cartridge 57 or apply mechanical impact to cause the dust accumulated on the surface of the filter cartridge 57 to fall off. Under the action of gravity, the dust slides into the dust collection device 53 along the conical discharge bucket 513, thereby completing automatic cleaning and collection. The entire process completes the regeneration of the filter cartridge 57 without stopping the machine, maintaining stable filtration efficiency.

[0072] As a preferred example of this application, a maintenance plate 514 is provided on one side of the dust collector housing 51. In this example, by providing a maintenance plate 514 on one side of the dust collector housing 51, workers can directly access key components such as the filter cartridge 57 or rotating parts 58 inside the dust collector housing 51 by simply opening the maintenance plate when needed, thereby carrying out inspection, cleaning, or replacement work. This reduces the complexity of daily maintenance and avoids the previous problem of having to completely disassemble the housing or rely on cumbersome steps for internal maintenance, saving a lot of time and labor costs. At the same time, the setting of the maintenance plate 514 makes the operation safer and more reliable. Workers can clean the filter cartridge 57 in a timely manner to prevent it from affecting the filtration efficiency due to dust accumulation, and can also quickly deal with abnormal operation of the rotating parts 58 to ensure that it maintains normal working condition. This ensures that the entire waste powder treatment device can operate continuously and stably, avoiding production shutdowns due to equipment failure that affect the continuity of the powder spraying process.

[0073] This application also discloses an intelligent powder spraying system, which employs the waste powder treatment device of the powder spraying system described in the above embodiments. The intelligent powder spraying system of this application includes:

[0074] The powder supply center 100 is equipped with a powder supply tank inside, which is used to supply powder to the powder spraying gun 2;

[0075] The powder coating center 200 includes at least one powder coating chamber 1, and a powder coating gun 2 is provided on one side of the powder coating chamber 1 for powder coating the cups driven by the internal chain conveyor 700 entering the powder coating chamber 1.

[0076] The powder recovery device 300 includes a cyclone separator 4, which is used for powder cyclone recovery inside the powder supply center 100 and / or the powder spraying chamber 1.

[0077] The dust removal device 400 includes a negative pressure suction device 5 and a dust removal pipe 6. The negative pressure suction device 5 is connected to the air outlet 405 of the cyclone separator 4 through the dust removal pipe 6.

[0078] A drying device 500 is located downstream of the powder spraying treatment center 200 and is used to dry the cups after powder spraying treatment in the powder spraying chamber 1.

[0079] A cooling device 600 is located downstream of the drying device 500 and is used to cool the cups after they have been dried and solidified.

[0080] The ground chain transmission device 700 is used to drive the cups to move periodically along the powder spraying center 200, the drying device 500, and the cooling device 600.

[0081] The powder coating system waste powder treatment device disclosed in this application optimizes the overall structure and process of the thermos cup coating process, and designs a highly efficient powder recovery and dust removal device, thereby significantly reducing powder waste and environmental pollution. Simultaneously, the optimized design of the airflow guidance and separation device effectively prevents powder accumulation and scattering inside the equipment, ensuring coating uniformity and finished product surface quality. The improved spray gun arrangement and tray conveying system enhance coating adhesion, color consistency, and coating efficiency. Especially in powder changing operations, the modular design and application of quick-connect channels shorten the powder changing process from approximately two hours to about 15 minutes (tested), significantly improving powder changing efficiency and reducing production downtime. This ensures continuous operation of the production line and the stability of overall capacity, while reducing manual intervention and operational complexity. It achieves efficient powder recovery and rapid replacement while maintaining coating quality and coating precision, reducing raw material consumption and production costs, and improving the safety and cleanliness of the production environment, making the entire coating production process greener, more energy-efficient, more efficient, and more economically sustainable.

[0082] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A waste powder treatment device for a powder spraying system, characterized in that, include: The powder spraying treatment center (200) has a dust removal chamber (7), a powder spraying chamber (1) and a powder cleaning chamber (8) arranged in sequence inside. The ground chain transmission device (700) drives the cup to pass through the dust removal chamber (7), the powder spraying chamber (1) and the powder cleaning chamber (8) in sequence. A powder spraying chamber (1) is provided with a through channel groove (102) for the ground chain transmission device (700) to drive the cup in and out. Inside the chamber, a shielding device (1010) is provided to cover the ground chain transmission device (700) passing through the powder spraying chamber (1). A material collection channel (109) is provided between the shielding device (1010) and the inner wall of the powder spraying chamber (1). A collection pipe (107) is provided at the lower end of the material collection channel (109). The negative pressure suction device (5) includes a dust collection box (51) and a negative pressure generating box (54). A filter cartridge (57) is installed inside the dust collection box (51), and a negative pressure fan (541) is installed inside the negative pressure generating box (54) to draw the dust-laden gas in the dust collection chamber (7) and / or the powder spraying chamber (1) and / or the powder cleaning chamber (8) into the dust collection box (51) and after filtration by the filter cartridge (57), it is discharged into the external environment.

2. The waste powder treatment device for the powder spraying system according to claim 1, characterized in that, A cyclone separator (4) is provided between the powder spraying chamber (1) and the negative pressure suction device (5). The cyclone separator (4) includes a cylinder (402). An air inlet (403) is opened on the side of the cylinder (402). The air inlet (403) is connected to the collection pipe (107) through the powder return pipe (3). A tapered pipe (406) is provided at the lower end of the cylinder (402). A collection device (407) is provided at the lower end of the tapered pipe (406).

3. The waste powder treatment device for the powder spraying system according to claim 2, characterized in that, At least two powder spraying chambers (1) are provided, and each powder spraying chamber (1) is provided with a powder spraying gun (2). Each powder spraying chamber (1) is connected to the corresponding cyclone separator (4) through an independent powder return pipe (3). The cylinders (402) of the two cyclone separators (4) are connected to the negative pressure suction device (5) through a dust removal pipe (6).

4. The waste powder treatment device for the powder spraying system according to claim 3, characterized in that, A powder supply center (100) is provided between the two cyclone separators (4), the powder supply center (100) is used to supply powder to the powder spraying gun (2), and the cyclone separators (4), the powder supply center (100) and the negative pressure suction device (5) are arranged side by side on one side of the powder spraying processing center (200).

5. The waste powder treatment device for the powder spraying system according to claim 4, characterized in that, The dust removal chamber (7), the powder spraying chamber (1), and the powder cleaning chamber (8) are arranged linearly along the direction of cup movement in the powder spraying chamber (1). The cyclone separator (4), the powder supply center (100), and the negative pressure suction device (5) are also arranged linearly and parallel to the direction of cup movement in the powder spraying chamber (1). The dust removal pipe (6) includes a collecting pipe (601). The length direction of the collecting pipe (601) is parallel to the direction of cup movement in the powder spraying chamber (1), and the projection of the collecting pipe (601) on the ground is located between the projections of the powder spraying chamber (1) and the powder supply center (100) on the ground.

6. The waste powder treatment device for the powder spraying system according to claim 2 or 5, characterized in that, The return pipe (3) includes a first connecting pipe (301), a second connecting pipe (302), a third connecting pipe (303), and a fourth connecting pipe (304). The first connecting pipe (301), the second connecting pipe (302), and the fourth connecting pipe (304) are arranged in sequence. The first connecting pipe (301) is located on one side of the powder spraying chamber (1) and is connected to the discharge port (1074) on the collecting pipe (107) through a first connecting port (305). The fourth connecting pipe (304) is connected to the air inlet (403) on the cylinder (402) through a third connecting port (307) at its end. One end of the third connecting pipe (303) is connected to the powder supply center (100) through a second connecting port (306), and the other end of the third connecting pipe (303) is connected to the first connecting pipe (301). Alternatively, the other end of the third connecting pipe (303) is connected to the collecting pipe (601).

7. The waste powder treatment device for the powder spraying system according to claim 6, characterized in that, The central axis of the first connecting pipe (301) is arranged perpendicular to the central axis of the third connecting pipe (303), the central axis of the second connecting pipe (302) is arranged perpendicular to the central axis of the first connecting pipe (301) and the central axis of the fourth connecting pipe (304), and the plane containing the central axes of the first connecting pipe (301) and the third connecting pipe (303) is perpendicular to the plane containing the central axes of the first connecting pipe (301), the second connecting pipe (302) and the fourth connecting pipe (304).

8. The waste powder treatment device for the powder spraying system according to claim 7, characterized in that, The cleaning chamber (8) is connected to the negative pressure suction device (5) through the recovery pipeline (9). The recovery pipeline (9) includes a fifth connecting pipe (901) and a sixth connecting pipe (902). The central axis of the fifth connecting pipe (901) is arranged vertically, and the central axis of the sixth connecting pipe (902) is arranged horizontally. The end of the fifth connecting pipe (901) away from the sixth connecting pipe (902) is connected to the cleaning chamber (8), and the end of the sixth connecting pipe (902) away from the fifth connecting pipe (901) is connected to the collecting pipe (601).

9. The waste powder treatment device for the powder spraying system according to claim 1, characterized in that, The negative pressure generating box (54) is located above the dust removal box (51), and a first mounting plate (55) is provided at the connection between the two. The negative pressure fan (541) is located on the first mounting plate (55), and a first connecting port (551) is provided on the first mounting plate (55). The first connecting port (551) is located corresponding to the negative pressure fan (541) and is connected to the dust removal box (51).

10. The waste powder treatment device for the powder spraying system according to claim 9, characterized in that, A connector (52) is provided on the side wall of the dust collector (51). The connector (52) is used to communicate with the collection pipe (601) and the recovery pipe (9). A second mounting plate (56) is provided inside the dust collector (51). The second mounting plate (56) divides the internal space of the dust collector (51) into an installation cavity (511) and a filter cavity (512). An installation hole (561) is provided on the second mounting plate (56). The filter cartridge (57) is installed in the installation hole (561). A conical discharge bucket (513) is provided below the filter cavity (512). A dust collection device (53) is provided below the conical discharge bucket (513).

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