Self-cleaning powder spraying machine

Abstract

This utility model provides a self-cleaning powder coating machine, including a powder feeding assembly, a ventilation assembly, and a powder coating box. By setting up a ventilation assembly and using a second pressurized air source to connect to the unblocking nozzle of the powder coating box, the anti-mildew powder accumulated in the powder coating box during powder coating can be sprayed and unblocked. Furthermore, by relying on a first pressurized air source to connect to the distribution chamber, the anti-mildew powder in the distribution chamber can be distributed and dispensed, avoiding the problems of easy agglomeration and accumulation caused by the powder being directly output from the powder coating box without being stirred and dispersed in the powder feeding assembly. A single distribution chamber can correspond to two or more powder coating boxes for pressurized spraying of anti-mildew powder, improving the anti-mildew powder conveying efficiency of the powder feeding assembly. It can correspond to multiple powder coating boxes to achieve stable output of anti-mildew powder to glass on a single roller conveyor, or to glass on multiple roller conveyors.

Description

Technical Field

[0001] This utility model relates to the field of glass manufacturing equipment, and in particular to a self-cleaning powder coating machine. Background Technology

[0002] In the production of glass and glass products, the packaging materials used are usually paper and plastic film. In order to prevent the products from getting moldy during transportation or storage, reduce cleaning processes and time, and facilitate the removal of sheets during subsequent processing, glass products are usually wrapped in film and transported on roller conveyors, and anti-mold powder is sprayed on the surface of the paper or plastic film of the glass products.

[0003] A powder spraying machine is a device that can evenly spray powdered materials onto the glass surface. However, during use, it has been found that due to the dust-generating properties of anti-mold powder, after a period of operation, a large amount of anti-mold powder that has not fallen off properly will accumulate on the nozzle and spraying box. If cleaning is not timely or the cleaning time is not appropriate, the anti-mold powder is prone to becoming damp and clumping, resulting in clumps of anti-mold powder falling on the glass, which seriously affects the utilization rate of the anti-mold powder and even affects the working stability of the spraying box and nozzle. Utility Model Content

[0004] Therefore, a self-cleaning powder coating machine is needed to solve the problem that anti-mold powder is prone to caking when it gets damp, causing clumps of anti-mold powder to fall onto the glass, which seriously affects the utilization rate of the anti-mold powder and even affects the working stability of the powder coating box and nozzle.

[0005] To achieve the above objectives, this utility model provides a self-cleaning powder spraying machine, including a powder feeding assembly, a ventilation assembly, and a powder spraying box;

[0006] The powder feeding assembly includes a powder silo, a first vibrator, a switching cylinder, a mixing tank, a stirrer, a powder mixer, a first pressurized air source, and a distribution chamber. The first vibrator is installed on the powder silo. The switching cylinder has a switching part located at the discharge end of the powder silo. The inlet end of the mixing tank is connected to the discharge end of the powder silo. The stirring part of the stirrer extends into the mixing tank. The discharge end of the mixing tank is connected to the inlet end of the powder mixer. The first pressurized air source and the discharge end of the powder mixer are connected to the distribution chamber, which has multiple output ends.

[0007] The ventilation assembly includes a second pressurized air source, a distributor, and unblocking valves. The second pressurized air source is connected to the distributor. There are two or more unblocking valves, each with an inlet and an outlet. The inlet of the unblocking valve is connected to the distributor.

[0008] The number of powder spraying boxes is two or more, and they are arranged above the glass roller conveyor. Each powder spraying box includes a venting hole, a venting nozzle, and a powder outlet nozzle. The venting hole is connected to the air outlet of the venting valve. The number of venting nozzles is two or more, and they are arranged in an arrangement. The venting nozzles are connected to the venting holes. The nozzles face the inside of the powder spraying box from top to bottom. The powder outlet nozzles are connected to the output end of the distribution chamber.

[0009] In a preferred embodiment of this application, the on / off portion of the on / off cylinder is a baffle, with one side of the baffle connected to the cylinder and the other side extending into the discharge end of the powder silo. By setting the baffle as the on / off portion of the cylinder, it is convenient to use the cylinder to quickly extend and retract to convey the amount of anti-mildew powder from the powder silo 11 to the mixing tank, thus facilitating the control of the amount of anti-mildew powder in the mixing tank and the workload of the agitator.

[0010] In a preferred embodiment of this application, a conveying pipe is provided between the powder mixer and the first pressurized air source. The cross-sectional dimension of the conveying pipe is larger than the cross-sectional dimension of the output end of the powder mixer and the distribution chamber connected to the first pressurized air source. By setting a conveying pipe between the powder mixer and the first pressurized air source, and making the cross-sectional dimension of the conveying pipe larger than the cross-sectional dimension of the output end of the powder mixer and the distribution chamber connected to the first pressurized air source, it is convenient to widen the material output space, and facilitate the further loosening of the loose material after mixing during the conveying process.

[0011] In a preferred embodiment of this application, the conveying pipe is equipped with a second vibrator. By providing a second vibrator, the flow rate of the material after mixing in the mixing tank can be controlled by the powder conditioner, thereby improving the material conveying effect during the output process.

[0012] In a preferred embodiment of this application, the powder feeding assembly further includes a leveling pipe. The outlet end of the powder mixer is connected to the distribution chamber through the leveling pipe. The cross-section of the leveling pipe gradually widens on the side facing the distribution chamber, and the leveling pipe is connected to a first pressurized air source. The pipeline of the first pressurized air source extends into the leveling pipe, and the outlet end of the first pressurized air source faces the distribution chamber. By providing a leveling pipe, space is provided for mixing the anti-mold powder with air through the inner side of the leveling pipe, which gradually widens towards the distribution chamber. This, combined with the first pressurized air source, facilitates the mixing and output of gas and anti-mold powder materials towards the distribution chamber. In some preferred embodiments, a venturi tube can be used as the leveling pipe.

[0013] In a preferred embodiment of this application, the powder spraying box has two powder outlets, which are symmetrically arranged along the center line. By providing two powder outlets in the powder spraying box, it is easier to increase the output area or output density of the anti-mildew powder.

[0014] In a preferred embodiment of this application, a powder inlet is provided above the powder silo. The powder inlet facilitates the addition of anti-mildew powder into the powder silo.

[0015] In a preferred embodiment of this application, the powder mixer is provided with a conveying section for conveying material from the mixing tank to the distribution chamber. By providing the conveying section of the powder mixer, it is convenient to convey the anti-mildew powder using the conveying section.

[0016] In a preferred embodiment of this application, the cross-section of the output end of the powder spraying nozzle in the powder spraying box gradually increases. By setting the output end cross-section of the powder spraying nozzle to gradually increase, it is easier to disperse and spray the anti-mildew powder.

[0017] In a preferred embodiment of this application, the stirring part of the agitator is a stirring rod. By setting the stirring part of the agitator to a stirring rod, it is convenient to stir the anti-mildew powder in the mixing tank.

[0018] Unlike existing technologies, the above technical solution has the following advantages: By setting up a ventilation assembly and using a second pressurized air source to connect to the unblocking nozzle of the powder spraying box, the anti-mildew powder accumulated in the powder spraying box during powder spraying can be sprayed and unblocked. Furthermore, by relying on the first pressurized air source to connect to the distribution chamber, the anti-mildew powder in the distribution chamber can be distributed and dispensed. This avoids the problem of easy agglomeration and accumulation caused by the powder being directly output from the powder spraying box without being stirred and dispersed in the powder feeding assembly. A single distribution chamber can correspond to two or more powder spraying boxes for pressurized spraying of anti-mildew powder, improving the anti-mildew powder conveying efficiency of the powder feeding assembly. It can also correspond to multiple powder spraying boxes to achieve stable output of anti-mildew powder to the glass on a single roller conveyor, or to the glass on multiple roller conveyors. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the powder feeding assembly in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the ventilation assembly in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the powder spraying box in an embodiment of the present invention;

[0022] Figure 4 This is a schematic cross-sectional view of the powder nozzle in an embodiment of the present invention.

[0023] Figure 5 This is a detailed structural diagram of the unblocking nozzle in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Powder delivery assembly;

[0026] 11. Powder silo; 12. First vibrator; 13. On / off cylinder; 14. Mixing tank;

[0027] 15. Stirrer; 16. Powder mixer; 17. First pressurized air source; 18. Distribution chamber;

[0028] 19. Feeding pipe; 110. Blending pipe; 111. Second vibrator; 112. Powder inlet;

[0029] 20. Ventilation assembly;

[0030] 21. Second pressurized air source; 22. Distributor; 23. Unblocking valve;

[0031] 30. Powder spraying box;

[0032] 31. Unblock the air vents; 32. Unblock the nozzles; 33. Powder outlet nozzles. Detailed Implementation

[0033] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0034] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0035] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0036] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0037] In this application, 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 actual quantity, hierarchy or order relationship between these entities or operations.

[0038] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0039] Similar to the interpretation in the Patent Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also interpreted in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0040] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0041] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0042] Please refer to the following: Figures 1 to 5 This utility model provides a self-cleaning powder spraying machine, including a powder feeding assembly 10, a ventilation assembly 20 and a powder spraying box 30;

[0043] The powder feeding assembly 10 includes a powder hopper 11, a first vibrator 12, an on / off cylinder 13, a mixing tank 14, a stirrer 15, a powder mixer 16, a first pressurized air source 17, and a distribution chamber 18. The first vibrator 12 is mounted on the powder hopper 11. The on / off cylinder 13 has an on / off part located at the discharge end of the powder hopper 11. The inlet end of the mixing tank 14 is connected to the discharge end of the powder hopper 11. The stirring part of the stirrer 15 extends into the mixing tank 14. The discharge end of the mixing tank 14 is connected to the inlet end of the powder mixer 16. The first pressurized air source 17 and the discharge end of the powder mixer 16 are both connected to the distribution chamber 18. The distribution chamber 18 has multiple output ends.

[0044] The ventilation assembly 20 includes a second pressurized air source 21, a distributor 22, and a drain valve 23. The second pressurized air source 21 is connected to the distributor 22. There are two or more drain valves 23, each with an air inlet and an air outlet. The air inlet of the drain valve 23 is connected to the distributor 22.

[0045] There are two or more powder spraying boxes 30, which are located above the glass roller conveyor. Each powder spraying box 30 includes an air vent 31, an air vent 32, and a powder outlet 33. The air vent 31 is connected to the air outlet of the air vent valve 23. There are two or more air vents 32, which are arranged in an array. The air vents 32 are connected to the air vent 31. The nozzles face the inside of the powder spraying box 30 from top to bottom. The powder outlet 33 is connected to the output end of the distribution chamber 18.

[0046] According to the above structure, during the operation of the self-cleaning powder spraying machine, the operator puts anti-mold powder into the powder hopper 11. The anti-mold powder moves towards the discharge end of the powder hopper 11 by the vibration of the first vibrator 12. The on / off cylinder 13 controls the discharge cross-sectional area of ​​the powder hopper 11 by driving the on / off part, thereby controlling the output amount of anti-mold powder and ensuring that the amount of anti-mold powder entering the mixing tank 14 is controlled. The anti-mold powder in the mixing tank 14 is stirred by the stirring part of the agitator 15, thus dispersing the powder and preventing the anti-mold powder stored or accumulated in the powder hopper 11 from becoming damp and clumping. The anti-mold powder, after being stirred in the mixing tank 14, is gradually conveyed downwards by the powder mixer 16 and pressurized by the first pressurized air source 17 to disperse the anti-mold powder. It is then sprayed into the distribution chamber 18. The distribution chamber 18 has multiple interfaces, which are connected to the powder outlets 33 of each powder spraying box 30 through pipelines. The powder spraying box 30 is located above or near the roller conveyor for transporting glass and its packaging. The powder outlets 33 of the powder spraying box 30 face the roller conveyor and spray the pressurized and dispersed anti-mold powder through the powder outlets 33. When some powder coating material accumulates or clumps inside any powder coating box 30, the second pressurized air source 21 of the ventilation assembly 20 operates, inputting pressurized gas into the cavity of the distributor 22. The cavity of the distributor 22 is connected to multiple unblocking valves 23, and drives the corresponding unblocking valves 23 to open or close according to the number of powder coating boxes 30 that need to be cleaned or the powder coating boxes 30 at a specified location, thereby opening or closing the pipeline between the distributor 22 and the unblocking air holes 31 of the powder coating box 30. The pipeline with the unblocking valve 23 opened allows the air from the second pressurized air source 21 into the cavity of the distributor 22, which then flows through the pipeline into the unblocking air holes 31 of the powder coating box 30. The air holes 31 then distribute the air to each evenly arranged unblocking nozzle 32, which outputs gas to perform top-to-bottom spray cleaning of the inside of the powder coating box 30 and the powder outlet nozzle 33 until the cleaning operation is completed. By setting up the ventilation assembly 20 and using the second pressurized air source 21 to connect to the unblocking nozzle 32 of the powder spraying box 30, the anti-mildew powder accumulated in the powder spraying box 30 can be sprayed and unblocked during powder spraying. Furthermore, by relying on the first pressurized air source 17 to connect to the distribution chamber 18, the anti-mildew powder in the distribution chamber 18 can be distributed and dispensed. This avoids the problem of easy agglomeration and accumulation caused by the powder being directly output from the powder spraying box 30 without being stirred and dispersed in the powder feeding assembly 10. A single distribution chamber 18 can correspond to two or more powder spraying boxes 30 for pressurized spraying of anti-mildew powder, thereby improving the anti-mildew powder conveying efficiency of the powder feeding assembly 10. This allows for stable output of anti-mildew powder to a single roller conveyor of glass or to the glass of multiple roller conveyors.

[0047] Please refer to the following: Figures 1 to 5In a preferred embodiment of this application, the switching part of the on / off cylinder 13 is a baffle. One side of the baffle is connected to the cylinder, and the other side extends into the pipeline or a preset cavity at the discharge end of the powder silo 11 for switching on and off. By setting the baffle as the switching part of the cylinder, it is convenient to use the cylinder to quickly extend and retract to convey the amount of anti-mildew powder from the powder silo 11 to the mixing tank 14, thus facilitating the control of the amount of anti-mildew powder in the mixing tank 14 and the workload of the agitator 15.

[0048] Please refer to the following: Figures 1 to 5 In a preferred embodiment of this application, a conveying pipe 19 is provided between the powder mixer 16 and the first pressurized air source 17. The cross-sectional dimension of the conveying pipe 19 is larger than the cross-sectional dimension of the outlet end of the powder mixer 16 and the distributing chamber 18 connecting the first pressurized air source 17. During the movement of the anti-mold powder, after reaching the widened space at the conveying pipe 19, the anti-mold powder disperses and gradually enters the powder mixer 16. By setting the conveying pipe 19 between the powder mixer 16 and the first pressurized air source 17, and making the cross-sectional dimension of the conveying pipe 19 larger than the cross-sectional dimension of the outlet end of the powder mixer 16 and the distributing chamber 18 connecting the first pressurized air source 17, it is convenient to widen the material output space, which facilitates the further maintenance of the loose material after mixing in a loose state during the conveying process.

[0049] Please refer to the following: Figures 1 to 5 In a preferred embodiment of this application, the conveying pipe 19 is provided with a second vibrator 111. By providing the second vibrator 111, the flow rate of the material after mixing in the mixing tank 14 is controlled by the powder conditioner 16, thereby improving the material conveying effect during the output process.

[0050] Please refer to the following: Figures 1 to 5 In a preferred embodiment of this application, the powder feeding assembly 10 further includes a uniform feeding pipe 110. The discharge end of the powder mixer 16 is connected to the distribution chamber 18 through the uniform feeding pipe 110. The cross-section of the uniform feeding pipe 110 gradually widens on the side facing the distribution chamber 18, and the uniform feeding pipe 110 is connected to a first pressurized air source 17. The pipe of the first pressurized air source 17 extends into the uniform feeding pipe 110, and the air outlet of the first pressurized air source 17 faces the distribution chamber 18. By setting the uniform feeding pipe 110, it is convenient to provide space for mixing air with the anti-mold powder through the inner side of the uniform feeding pipe 110, which gradually widens towards the distribution chamber 18, so as to cooperate with the first pressurized air source 17 to mix and output gas and anti-mold powder materials in the direction of the distribution chamber 18. In some preferred embodiments, the uniform feeding pipe 110 can be a venturi tube.

[0051] Please refer to the following: Figures 1 to 5In a preferred embodiment of this application, the powder spraying box 30 has two powder outlets 33, and the two powder outlets 33 in the powder spraying box 30 are symmetrically arranged along the center line. By providing two powder outlets 33 in the powder spraying box 30, it is convenient to increase the output area or output density of the anti-mildew powder.

[0052] Please refer to the following: Figures 1 to 5 In a preferred embodiment of this application, a powder inlet 112 is provided above the powder hopper 11. The powder inlet 112 facilitates the addition of anti-mildew powder into the powder hopper 11.

[0053] Please refer to the following: Figures 1 to 5 In a preferred embodiment of this application, the powder mixer 16 is provided with a conveying section for conveying material from the mixing tank 14 to the distribution chamber 18. By providing the conveying section of the powder mixer 16, it is convenient to convey the anti-mildew powder using the conveying section. The powder mixer 16 can employ a pneumatic diaphragm pump, a silo-type pneumatic conveying pump, or a screw conveying pump structure to convey material from the mixing tank 14 to the distribution chamber 18 using the conveying section. Alternatively, a cylindrical powder mixer 16 can be used, with a pressurized air source or vibrator on one side, relying on air blowing or vibration to convey the material.

[0054] Please refer to the following: Figures 1 to 5 In a preferred embodiment of this application, the cross-section of the output end of the powder spray nozzle 33 inside the powder spray box 30 gradually increases. By setting the cross-section of the output end of the powder spray nozzle 33 to gradually increase, it is easier to disperse and spray the anti-mildew powder.

[0055] Please refer to the following: Figures 1 to 5 In a preferred embodiment of this application, the stirring part of the stirrer 15 is a stirring rod. The stirring rod can be driven by a motor and relies on the rotating shaft and its branch rods for stirring. By setting the stirring part of the stirrer 15 to a stirring rod, it is convenient to stir the anti-mildew powder in the mixing tank 14.

[0056] In the above embodiments, the first pressurized air source 17 and the second pressurized air source 21 can be air pumps.

[0057] In the above embodiment, a level gauge can be installed on the side of the mixing tank 14. The level gauge is connected to the on / off cylinder 13. The opening and closing degree and opening and closing state of the on / off cylinder are controlled by the controller through the level gauge signal.

[0058] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A self-cleaning powder coating machine, characterized in that: Includes powder feeding assembly, ventilation assembly and powder spraying box; The powder feeding assembly includes a powder silo, a first vibrator, a switching cylinder, a mixing tank, a stirrer, a powder mixer, a first pressurized air source, and a distribution chamber. The first vibrator is installed on the powder silo. The switching cylinder has a switching part located at the discharge end of the powder silo. The inlet end of the mixing tank is connected to the discharge end of the powder silo. The stirring part of the stirrer extends into the mixing tank. The discharge end of the mixing tank is connected to the inlet end of the powder mixer. The first pressurized air source and the discharge end of the powder mixer are connected to the distribution chamber, which has multiple output ends. The ventilation assembly includes a second pressurized air source, a distributor, and unblocking valves. The second pressurized air source is connected to the distributor. There are two or more unblocking valves, each with an inlet and an outlet. The inlet of the unblocking valve is connected to the distributor. The number of powder spraying boxes is two or more, and they are arranged above the glass roller conveyor. Each powder spraying box includes a venting hole, a venting nozzle, and a powder outlet nozzle. The venting hole is connected to the air outlet end of the venting valve. The number of venting nozzles is two or more, and they are arranged in an arrangement. The venting nozzles are connected to the venting holes. The nozzles face the inside of the powder spraying box from top to bottom. The powder outlet nozzles are connected to the output end of the distribution chamber.

2. The self-cleaning powder coating machine according to claim 1, characterized in that, The on / off part of the on / off cylinder is a baffle, with one side of the baffle connected to the cylinder and the other side extending into the discharge end of the powder hopper.

3. The self-cleaning powder coating machine according to claim 1, characterized in that, A material conveying pipe is provided between the powder mixer and the first pressurized air source. The cross-sectional dimension of the material conveying pipe is larger than the cross-sectional dimension of the output end of the powder mixer and the distribution chamber of the first pressurized air source.

4. A self-cleaning powder coating machine according to claim 3, characterized in that, The feed pipe is equipped with a second vibrator.

5. A self-cleaning powder coating machine according to claim 1, characterized in that, The powder feeding assembly also includes a uniform material pipe. The discharge end of the powder mixer is connected to the distribution chamber through the uniform material pipe. The cross-section of the uniform material pipe gradually expands on the side facing the distribution chamber. The uniform material pipe is connected to a first pressurized air source. The pipeline of the first pressurized air source extends into the uniform material pipe, and the air outlet of the first pressurized air source faces the distribution chamber.

6. A self-cleaning powder coating machine according to claim 1, characterized in that, The powder spraying box has two powder outlets, and the two powder outlets inside the powder spraying box are symmetrically arranged along the center line.

7. A self-cleaning powder coating machine according to claim 1, characterized in that, A powder feeding port is provided above the powder silo.

8. A self-cleaning powder coating machine according to claim 1, characterized in that, The powder mixer is equipped with a conveying section, which is used to convey the material from the mixing tank to the distribution chamber.

9. A self-cleaning powder coating machine according to claim 1, characterized in that, The cross-section of the output end of the powder spray nozzle inside the powder spraying box gradually increases.

10. A self-cleaning powder coating machine according to claim 1, characterized in that, The stirring part of the stirrer is a stirring rod.

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