A spraying device for color changing on metal surfaces

Abstract

This invention relates to the field of powder coating technology and discloses a powder coating device for color changing on metal surfaces, including a spray gun with a powder input pipe nested at the bottom. Due to the volume of powder in a clumped state, it may impact the side wall of the inductive sensor under the influence of the output airflow from the gas supply pipe. The impact force causes a certain degree of separation. Based on the internal layout of the sieving impeller, some of the clumped powder undergoes secondary separation at this point along with the flowing airflow, reducing the potential for clumping. The high-pressure gas injected into the spray gun causes the drive impeller to rotate, which in turn drives the sieving impeller to rotate. Several protrusions are arranged on the blades of the drive impeller. The gaps between these protrusions affect the flow of gas and powder along the outer wall, exhibiting a wind-breaking behavior that facilitates flow. The arrangement between the blades effectively divides the airflow.

Description

Technical Field

[0001] This invention relates to the field of powder coating technology, specifically to a powder coating equipment for changing the color of metal surfaces. Background Technology

[0002] Powder coating is sprayed onto the surface of the workpiece using a powder spraying equipment. Under the action of electrostatics, it adheres to the surface of the workpiece to form a coating. The coating is then cured by high-temperature baking to enhance the mechanical strength, corrosion resistance, and aging resistance of the workpiece.

[0003] When using powder coating, powder accumulation can often lead to agglomeration, which can affect the quality of the plastic coating. This can result in uneven powder distribution during baking, or the presence of protrusions, causing some powder to accumulate or not cover the target surface, leaving the target exposed to the air. This is especially problematic when powder baking is required, as areas not covered by powder may become abnormal. Furthermore, if large agglomerates enter the gun body, they can cause blockages, leading to the accumulation of metal powder inside the gun body, which can damage internal parts, reduce production efficiency, and increase losses. Summary of the Invention

[0004] The purpose of this invention is to provide a spraying device for color changing on metal surfaces, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a spraying device for color changing on metal surfaces, comprising a spray gun, a powder input pipe nested at the bottom of the spray gun, an air supply pipe embedded at the center of the bottom of the spray gun, and a power cord embedded on the side of the bottom of the spray gun away from the air supply pipe.

[0007] The distribution facility is equipped with a sleeve assembly inside.

[0008] The sleeve assembly has a slotted component inside to guide the internal airflow and metal powder;

[0009] A pressurizing mechanism is located inside the flow mechanism and is used to interfere with the internal airflow and metal powder.

[0010] The diffusion mechanism is located on the side wall of the pressurization mechanism and is used to diffuse the output airflow and metal powder.

[0011] Furthermore, the sleeve assembly is fitted onto the outer wall of the spray gun via a rotating component;

[0012] The rotating component includes a tightening sleeve that is movably connected to the outer wall of the spray gun;

[0013] The slotted component is formed inside the sleeve component via a cutting element;

[0014] The opening element includes a sliding groove formed inside the sleeve assembly.

[0015] Furthermore, the booster mechanism includes:

[0016] Interference component, the interference component is fixedly connected inside the slotted component by fasteners;

[0017] The fasteners include a corrugated sleeve that is fixedly connected inside the slotted assembly;

[0018] The driving component is mounted on the side wall of the interference component via a setting element;

[0019] The mounting components include a drive impeller that is fixedly connected to the side wall of the interference assembly.

[0020] Furthermore, the diffusion mechanisms include:

[0021] The driven component is sleeved on the outer wall of the driving component via a sleeve;

[0022] The sleeve includes a driven rod placed on the side wall of the drive assembly;

[0023] The interference component is placed inside the driven component via a placement element.

[0024] The placement includes an electrostatic discharge rod placed inside the driven component.

[0025] Furthermore, the sleeve assembly includes a delivery sleeve fitted inside the tightening sleeve, an inductive sensor is placed on the side of the tightening sleeve near the spray gun, and a hollow groove is formed inside the delivery sleeve.

[0026] The spray gun has a conductive rod inside the side of the tightening sleeve. The outer wall of the conductive rod near the tightening sleeve contacts the side wall of the inductive sensor. The inductive sensor is nested in the side wall of the conveying sleeve. The outer wall of the inductive sensor away from the conveying sleeve is nested inside the inductive sensor.

[0027] Furthermore, the grooving assembly includes a pressurizing chamber formed inside the conveying sleeve, the pressurizing chamber being connected to the sliding groove, and a conveying chamber being formed on the side of the pressurizing chamber away from the sliding groove, the conveying chamber being connected to the pressurizing chamber.

[0028] Furthermore, the interference assembly includes a corrugated sleeve fixedly connected to the inner wall of the conveying cavity, a sliding sleeve slidably connected inside the sliding groove, a screening impeller fixedly connected to the inner wall of the sliding sleeve, the side wall of the screening impeller embedded in the interior of the hollow groove, the center of the screening impeller being hollow, and a transmission rod slidably connected inside the screening impeller.

[0029] The transmission pole slides inside the inductive sensor on the side closest to it.

[0030] Furthermore, the drive assembly includes a drive impeller fixedly connected to the side wall of the screening impeller. The drive impeller is hollow inside. An umbrella-shaped central shaft is fixedly connected to the side of the screening impeller away from the drive impeller. Several brackets are fixedly connected to the outer wall of the umbrella-shaped central shaft. A through placement cavity is opened inside the umbrella-shaped central shaft. Several L-shaped buckles are fixedly connected to the side of the umbrella-shaped central shaft away from the drive impeller.

[0031] The transmission pole slides within the inner wall of the placement cavity.

[0032] Furthermore, the driven assembly includes a driven rod disposed on the side wall of the umbrella-shaped central shaft. Several buckle slots are provided on the side of the driven rod near the L-shaped buckle. A through slot is provided on the side wall of the driven rod. A corrugated sleeve is fixedly connected to the outer wall of the driven rod.

[0033] The outer wall of the L-shaped buckle is slidably connected to the inside of the buckle groove.

[0034] Furthermore, the interference component includes an electrostatic discharge rod movably connected inside the through groove, an umbrella-shaped diffusion sleeve fixedly connected to the side of the through groove near the electrostatic discharge rod, and a segmented support sleeve slidably connected to the outer wall of the driven rod near the snap-fit ​​groove.

[0035] The outer wall of the segmented support sleeve is fixedly connected to the inner wall of the conveying cavity, and the electrostatic release rod slides inside the conveying rod on the side closest to the transmission rod.

[0036] The present invention has the following beneficial effects:

[0037] 1. Powder entering the spray gun and exiting through the spray gun's outlet may clump. When clumps of powder in the powder input pipe are drawn into the spray gun and exited through the outlet, the volume of the clumps affects the airflow from the gas supply pipe, potentially impacting the side wall of the inductive sensor. Since the inductive sensor is blade-shaped near the spray gun, the impact force causes a certain degree of separation. Some powder enters the sieving impeller with the gas flow. Due to the impeller's internal layout, the airflow further separates the clumps, reducing potential clumping. The high-pressure gas sprayed from the spray gun causes the drive impeller to rotate, which in turn rotates the sieving impeller. The blades of the drive impeller have several protrusions arranged in a pattern. The gaps between these protrusions affect the flow of gas and powder along the outer wall, creating a wind-breaking effect that facilitates flow. The arrangement of the blades effectively divides the airflow, reducing the flow area and increasing the airflow velocity.

[0038] 2. Regarding the possibility of some agglomeration still existing inside the spray gun after being divided by the sieving impeller, when the airflow passes through the drive impeller, the fixed connection between the drive impeller and the sieving impeller means that the airflow will cause the drive impeller to rotate, which in turn drives the sieving impeller to rotate. When the airflow carrying powder passes through the sieving impeller and enters the pressure chamber, the rotation of the sieving impeller causes the umbrella-shaped central shaft to rotate. The airflow entering the pressure chamber is thrown towards the inner wall of the pressure chamber by the outer wall of the umbrella-shaped central shaft. Due to the inertia of rotation, the airflow on the side of the umbrella-shaped central shaft near the support gathers at the angle, creating a backflow and swirling phenomenon. The spray gun continuously delivers powder and gas during operation. The incoming powder and gas replace the powder gathered at the angle, moving in a spiral shape along the outer wall of the umbrella-shaped central shaft towards the L-shaped buckle. This swirling phenomenon disperses the powder inside due to the influence of the airflow, reducing the occurrence of agglomeration and blockage, enhancing powder crushing, and promoting the drying reaction.

[0039] 3. The input airflow for the spray gun is usually compressed air. Air is drawn from the surrounding environment and transported through an air supply pipe. The low temperature of the compressed air may carry some moisture. When the gas carrying powder is continuously transported into the pressurization chamber, it is transported in a spiral shape along the outer wall of the umbrella-shaped central axis as described above. As it enters the conveying chamber, the space is gradually compressed, and the gas is compressed, which increases the flow rate. This causes the airflow carrying powder to accelerate. The accelerated airflow impacts the surface of the second corrugated sleeve, flows along the inner wall of the conveying chamber, and impacts the inner wall of the first corrugated sleeve again. Through multiple impacts, the powder is dispersed to the greatest extent. The finer powder will flow directly, and any moisture that may be present will be dispersed by the airflow under the influence of the compressed environment. The pressurized airflow makes the powder more impactful and improves the adsorption of the powder coating particles.

[0040] 4. Regarding the internal airflow of the spray gun, when the drive impeller rotates, it drives the screening impeller to rotate. The rotation causes the L-shaped latch to slide inside the latch groove, thus causing the driven rod to rotate synchronously. Since the side of the transmission rod closest to the induction sensor slides inside the induction sensor, and the transmission rod is simultaneously connected to the drive impeller and the umbrella-shaped central shaft, static current is conducted from the conductive rod through the induction sensor to the transmission rod. The side of the transmission rod closest to the static discharge rod is also slidably connected to the outer wall of the static discharge rod, releasing static electricity through the static discharge rod. The powder, carrying static electricity, adheres to the target. Driven by the impeller, the driven rod rotates, causing the umbrella-shaped diffuser sleeve to rotate. The compressed airflow impacts the surface of the umbrella-shaped diffuser sleeve. Due to the slope of the umbrella-shaped diffuser sleeve, the impacting airflow carries the powder in a conical spray. The presence of the segmented support sleeve further divides the airflow into multiple segments, making the spray area wider. The rotation causes the powder to generate centrifugal force, reducing the phenomenon of uneven coverage when the powder is sprayed out. At the same time, the rotation process does not affect the static discharge rod's contact with the powder to conduct static electricity, increasing the powder coating efficiency.

[0041] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0045] Figure 3 This is a schematic diagram of the main structure of the present invention;

[0046] Figure 4 This is a schematic diagram of the slotted component structure of the present invention;

[0047] Figure 5 This is a schematic diagram of the interference component structure of the present invention;

[0048] Figure 6 This invention provides a partial structural diagram of the components.

[0049] Figure 7 For the present invention Figure 6 The structural diagram shown at point A in the middle;

[0050] Figure 8 This is a schematic diagram of the drive component structure of the present invention;

[0051] Figure 9 This is a schematic diagram of the driven component structure of the present invention;

[0052] Figure 10 This is a schematic diagram of a partial component structure of the interference component of the present invention;

[0053] Figure 11 This is a partial structural diagram of the interference component of the present invention.

[0054] The attached diagram lists the components represented by each number as follows:

[0055] In the diagram: 1. Circulation mechanism; 13. Spray gun; 14. Powder input pipe; 15. Gas supply pipe; 16. Power cord; 17. Conductive rod; 11. Sleeve assembly; 111. Tightening sleeve; 112. Conveying sleeve; 113. Inductive sensor; 114. Hollow groove; 12. Slotting assembly; 121. Sliding groove; 122. Pressurizing chamber; 123. Conveying chamber; 2. Pressurizing mechanism; 21. Interference assembly; 211. Corrugated sleeve one; 212. Sliding sleeve; 213. Screening impeller; 214. Transmission rod; 22. Drive assembly; 221. Drive impeller; 222. Umbrella-shaped central shaft; 223. Support; 224. Placement cavity; 225. L-shaped buckle; 3. Diffusion mechanism; 31. Driven assembly; 311. Driven rod; 312. Buckle groove; 313. Through groove; 314. Corrugated sleeve II; 32. Interference assembly; 321. Static discharge rod; 322. Umbrella-shaped diffusion sleeve; 323. Dividing support sleeve. Detailed Implementation

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

[0057] Please see Figure 1 - Figure 11 As shown, the present invention discloses a metal surface color-changing spraying device, including a spray gun 13, a powder input pipe 14 nested at the bottom of the spray gun 13, an air supply pipe 15 embedded at the center of the bottom of the spray gun 13, and a power cord 16 embedded on the side of the bottom of the spray gun 13 away from the air supply pipe 15.

[0058] Distribution mechanism 1, the internal part of which is provided with sleeve assembly 11;

[0059] The sleeve assembly 11 is provided with a slotted assembly 12 inside, which is used to guide the internal airflow and metal powder;

[0060] The pressurizing mechanism 2 is located inside the flow mechanism 1 and is used to interfere with the internal airflow and metal powder.

[0061] The diffusion mechanism 3 is located on the side wall of the pressurization mechanism 2 and is used to diffuse the output airflow and metal powder.

[0062] The sleeve assembly 11 is fitted onto the outer wall of the spray gun 13 via a rotating component;

[0063] The rotating component includes a tightening sleeve 111 that is movably connected to the outer wall of the spray gun 13;

[0064] The slotted assembly 12 is formed inside the sleeve assembly 11 by means of a cutting element;

[0065] The opening element includes a sliding groove 121 formed inside the sleeve assembly 11.

[0066] The booster mechanism 2 includes:

[0067] Interference component 21 is fixedly connected inside the slotted component 12 by a fastener;

[0068] The fasteners include a corrugated sleeve 211 that is fixedly connected inside the slotted assembly 12;

[0069] Drive component 22 is disposed on the side wall of interference component 21 via a setting component;

[0070] The mounting component includes a drive impeller 221 that is fixedly connected to the side wall of the interference assembly 21.

[0071] Diffusion mechanism 3 includes:

[0072] Driven component 31 is sleeved on the outer wall of drive component 22 via a sleeve;

[0073] The sleeve includes a driven rod 311 placed on the side wall of the drive assembly 22;

[0074] Interference component 32 is placed inside the driven component 31 by a placement member;

[0075] The placement includes an electrostatic discharge rod 321 placed inside the driven assembly 31.

[0076] The sleeve assembly 11 includes a delivery sleeve 112 sleeved inside the tightening sleeve 111. An inductive sensor 113 is placed on the side of the tightening sleeve 111 near the spray gun 13. A hollow groove 114 is opened inside the delivery sleeve 112.

[0077] The spray gun 13 has a conductive rod 17 placed inside the side of the spray gun 13 near the tightening sleeve 111. The outer wall of the conductive rod 17 near the tightening sleeve 111 contacts the side wall of the inductive sensor 113. The inductive sensor 113 is nested in the side wall of the delivery sleeve 112. The outer wall of the inductive sensor 113 away from the delivery sleeve 112 is nested inside the inductive sensor 113. This is used to connect with the outer wall of the spray gun 13 to prevent it from falling off and to provide a limiting function.

[0078] The slotting assembly 12 includes a pressurizing chamber 122 formed inside the conveying sleeve 112. The pressurizing chamber 122 is connected to the sliding groove 121. A conveying chamber 123 is formed on the side of the pressurizing chamber 122 away from the sliding groove 121. The conveying chamber 123 is connected to the pressurizing chamber 122. It is used to convey and interfere with the airflow and powder inside, so that they can circulate and be transported inside.

[0079] The interference component 21 includes a corrugated sleeve 211 fixedly connected to the inner wall of the conveying cavity 123, a sliding sleeve 212 slidably connected inside the sliding groove 121, a screening impeller 213 fixedly connected to the inner wall of the sliding sleeve 212, the side wall of the screening impeller 213 being embedded in the interior of the hollow groove 114, the center of the screening impeller 213 being hollow, and a transmission rod 214 slidably connected inside the screening impeller 213.

[0080] The transmission rod 214 slides inside the inductive sensor 113 on the side closest to the inductive sensor 113; it is used to traction and compress the airflow and powder transmitted inside.

[0081] The drive assembly 22 includes a drive impeller 221 fixedly connected to the side wall of the screening impeller 213. The drive impeller 221 is hollow inside. An umbrella-shaped central shaft 222 is fixedly connected to the side of the screening impeller 213 away from the drive impeller 221. Several supports 223 are fixedly connected to the outer wall of the umbrella-shaped central shaft 222. A through placement cavity 224 is opened inside the umbrella-shaped central shaft 222. Several L-shaped buckles 225 are fixedly connected to the side of the umbrella-shaped central shaft 222 away from the drive impeller 221.

[0082] The transmission rod 214 slides within the inner wall of the placement cavity 224; it is used to transmit force to the airflow being transported.

[0083] The driven assembly 31 includes a driven rod 311 disposed on the side wall of the umbrella-shaped central shaft 222. The driven rod 311 has a plurality of snap-fit ​​slots 312 on the side near the L-shaped snap 225. A through slot 313 is provided on the side wall of the driven rod 311. A corrugated sleeve 314 is fixedly connected to the outer wall of the driven rod 311.

[0084] Among them, the outer wall of the L-shaped buckle 225 is slidably connected to the inside of the buckle groove 312; 5, used to connect the L-shaped buckle 225, and the driven rod 311 is rotated by the driving force.

[0085] The interference component 32 includes an electrostatic discharge rod 321 movably connected inside the through groove 313. An umbrella-shaped diffuser sleeve 322 is fixedly connected to the side of the through groove 313 near the electrostatic discharge rod 321. A segmented support sleeve 323 is slidably connected to the outer wall of the driven rod 311 near the snap-fit ​​groove 312.

[0086] The outer wall of the segmented support sleeve 323 is fixedly connected to the inner wall of the conveying cavity 123, and the electrostatic release rod 321 slides inside the conveying rod 214 on the side near the conveying rod 214; it is used to obstruct the powder and airflow inside and diffuse them for spraying.

[0087] In a specific embodiment of the present invention, the powder input pipe 14 is connected to an external material conveying device, the gas supply pipe 15 is connected to an external gas compression device, and the power cord 16 is connected to an external power supply device.

[0088] When agglomerated powder, which may exist in the powder input pipe 14, is drawn into the spray gun 13 and discharged through the outlet, the volume of the agglomerated powder may affect its impact on the side wall of the inductive sensor 113 due to the influence of the output airflow from the gas supply pipe 15. Since the side of the inductive sensor 113 near the spray gun 13 is blade-shaped, the impact force causes a certain degree of separation. Some powder enters the interior of the sieving impeller 213 with the gas flow. According to the internal layout of the sieving impeller 213, the agglomerated powder undergoes secondary separation at this point along with the airflow, reducing the possibility of agglomeration. The high-pressure gas injected into the spray gun 13 causes the drive impeller 221 to rotate, driving the sieving impeller 213 to rotate. The blades of the drive impeller 221 have several protrusions arranged in a pattern. The gap difference formed between the protrusions affects the flow of gas and powder along the outer wall, exhibiting a behavior similar to air breaking. Figure 7 As shown in the middle H, it is more conducive to airflow, and the arrangement between the blades is equivalent to dividing the airflow, reducing the airflow environment and increasing the airflow speed.

[0089] Even after being divided by the sieving impeller 213, some agglomerates may still exist inside the spray gun 13. When the airflow passes through the drive impeller 221, the fixed connection between the drive impeller 221 and the sieving impeller 213 causes the drive impeller 221 to rotate, which in turn drives the sieving impeller 213 to rotate. When the airflow carrying powder passes through the sieving impeller 213 and enters the pressurization chamber 122, the rotation of the sieving impeller 213 causes the umbrella-shaped central shaft 222 to rotate. The airflow entering the pressurization chamber 122 is guided by the umbrella-shaped central shaft 222. The outer wall of the spray gun 13 is thrown towards the inner wall of the pressurization chamber 122. Due to the rotational inertia, the airflow on the side of the umbrella-shaped central shaft 222 near the support 223 is concentrated at the angle, resulting in a backflow and swirling phenomenon. The spray gun 13 continuously delivers powder and gas. The powder and gas that are introduced later replace the powder that is concentrated at the angle. The powder moves in a spiral shape along the outer wall of the umbrella-shaped central shaft 222 towards the L-shaped buckle 225. The swirling phenomenon causes the powder inside to be dispersed by the airflow, reducing the phenomenon of agglomeration and blockage, strengthening powder crushing and promoting the drying reaction.

[0090] The input airflow of the spray gun 13 is usually compressed air. Air is drawn from the surrounding environment and transported through the air supply pipe 15. The compressed air generates low temperature and may carry some water vapor components. When the gas carrying powder is continuously transported into the pressurization chamber 122, it is transported in a spiral shape along the outer wall of the umbrella-shaped central axis 222 as described above. When it enters the interior of the conveying chamber 123, the space is gradually compressed, the gas is compressed and the flow rate is increased, which accelerates the airflow carrying powder. The accelerated airflow impacts the surface of the corrugated sleeve 2 314, flows along the inner wall of the conveying chamber 123, and impacts the inner wall of the corrugated sleeve 1 211 again. After multiple impacts, the powder is dispersed to the greatest extent, while the finer powder will flow directly. Any moisture that may exist is dispersed by the airflow under the influence of the compressed environment. The pressurized airflow makes the powder more impactful, promotes airflow and achieves better powder coating, and increases powder coating efficiency.

[0091] When the drive impeller 221 rotates, driving the screening impeller 213 to rotate, the L-shaped latch 225 slides inside the latch groove 312 under the traction of the rotation, thus causing the driven rod 311 to rotate synchronously. Since the side of the transmission rod 214 closest to the inductive sensor 113 slides inside the inductive sensor 113, and the transmission rod 214 is simultaneously connected and slidably connected to the drive impeller 221 and the umbrella-shaped central shaft 222, static current is conducted from the conductive rod 17 through the inductive sensor 113 to the transmission rod 214. The side of the transmission rod 214 closest to the electrostatic release rod 321 is also slidably connected to the outer wall of the electrostatic release rod 321, through electrostatic release... The release rod 321 releases static electricity, allowing the powder to adhere to the target while carrying static electricity. Driven by the impeller 221, the driven rod 311 rotates with the umbrella-shaped diffuser sleeve 322. The compressed airflow impacts the surface of the umbrella-shaped diffuser sleeve 322. Due to the slope of the umbrella-shaped diffuser sleeve 322, the impacting airflow carries the powder in a conical spray. The presence of the dividing support sleeve 323 further divides the airflow into multiple parts, making the area wider. The rotation causes the powder to generate centrifugal force, reducing the phenomenon of uneven coverage when the powder is sprayed out. At the same time, the rotation does not affect the static electricity release rod 321's contact with the powder to conduct static electricity, increasing the powder coating efficiency.

[0092] When a color change is required, the powder conveying connection with the powder input pipe 14 can be closed, and compressed air can be input to blow out any powder residue inside, thus avoiding powder mixing in the new powder coating, improving production efficiency, and shortening the time for cleaning the powder inside.

[0093] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A metal surface color-changing spraying device, comprising a spray gun (13), wherein a powder input pipe (14) is nested and connected to the bottom of the spray gun (13), an air supply pipe (15) is embedded and connected to the center of the bottom of the spray gun (13), and a power cord (16) is embedded and connected to the side of the bottom of the spray gun (13) away from the air supply pipe (15), characterized in that, Also includes: The circulation mechanism (1) is provided with a sleeve assembly (11) inside the circulation mechanism (1); The sleeve assembly (11) is provided with a slotted assembly (12) inside, which is used to guide the internal airflow and metal powder; A pressurizing mechanism (2) is provided inside the flow mechanism (1) to interfere with the internal airflow and metal powder; A diffusion mechanism (3) is provided on the side wall of the pressurizing mechanism (2) for diffusing the output airflow and metal powder. The sleeve assembly (11) is sleeved on the outer wall of the spray gun (13) via a rotating component; The rotating component includes a tightening sleeve (111) that is movably connected to the outer wall of the spray gun (13). The slotted assembly (12) is formed inside the sleeve assembly (11) by means of a slotting member; The opening element includes a sliding groove (121) formed inside the sleeve assembly (11). The booster mechanism (2) includes: Interference component (21), which is fixedly connected to the inside of slotted component (12) by a fastener; The fastener includes a corrugated sleeve (211) that is fixedly connected inside the slotted assembly (12). A driving component (22) is disposed on the side wall of the interference component (21) by means of a setting member; The mounting component includes a drive impeller (221) fixedly connected to the side wall of the interference component (21); The diffusion mechanism (3) includes: Driven component (31), which is sleeved on the outer wall of drive component (22) by a sleeve; The sleeve includes a driven rod (311) placed on the side wall of the drive assembly (22). Interference component (32), which is placed inside the driven component (31) by a placement member; The placement component includes an electrostatic discharge rod (321) placed inside the driven assembly (31). The sleeve assembly (11) includes a delivery sleeve (112) sleeved inside the tightening sleeve (111). An inductive sensor (113) is placed on the side of the tightening sleeve (111) near the spray gun (13). A hollow groove (114) is opened inside the delivery sleeve (112). The spray gun (13) has a conductive rod (17) placed inside the side of the tightening sleeve (111). The outer wall of the conductive rod (17) near the tightening sleeve (111) is in contact with the side wall of the inductive sensor (113). The inductive sensor (113) is nested in the side wall of the delivery sleeve (112). The outer wall of the inductive sensor (113) away from the delivery sleeve (112) is nested inside the inductive sensor (113). The slotted assembly (12) includes a pressurizing chamber (122) formed inside the conveying sleeve (112), the pressurizing chamber (122) being connected to the sliding groove (121), and a conveying chamber (123) being formed on the side of the pressurizing chamber (122) away from the sliding groove (121), the conveying chamber (123) being connected to the pressurizing chamber (122); The interference component (21) includes a corrugated sleeve (211) fixedly connected to the inner wall of the conveying cavity (123), a sliding sleeve (212) slidably connected inside the sliding groove (121), a screening impeller (213) fixedly connected to the inner wall of the sliding sleeve (212), the side wall of the screening impeller (213) being embedded in the interior of the hollow groove (114), the center of the screening impeller (213) being hollow, and a transmission rod (214) slidably connected inside the screening impeller (213). The transmission rod (214) slides inside the inductive sensor (113) on the side closest to the inductive sensor (113); The drive assembly (22) includes a drive impeller (221) fixedly connected to the side wall of the screening impeller (213). The drive impeller (221) is hollow inside. An umbrella-shaped central shaft (222) is fixedly connected to the side of the screening impeller (213) away from the drive impeller (221). Several brackets (223) are fixedly connected to the outer wall of the umbrella-shaped central shaft (222). A through placement cavity (224) is opened inside the umbrella-shaped central shaft (222). Several L-shaped buckles (225) are fixedly connected to the side of the umbrella-shaped central shaft (222) away from the drive impeller (221). The transmission rod (214) slides within the inner wall of the placement cavity (224); The driven assembly (31) includes a driven rod (311) disposed on the side wall of the umbrella-shaped central shaft (222). The driven rod (311) has a plurality of buckle slots (312) on the side near the L-shaped buckle (225). The side wall of the driven rod (311) has a through slot (313) that passes through it. A corrugated sleeve (314) is fixedly connected to the outer wall of the driven rod (311). The outer wall of the L-shaped buckle (225) is slidably connected to the inside of the buckle groove (312); The interference component (32) includes an electrostatic discharge rod (321) movably connected inside the through groove (313). An umbrella-shaped diffuser sleeve (322) is fixedly connected to the side of the through groove (313) near the electrostatic discharge rod (321). A segmented support sleeve (323) is slidably connected to the outer wall of the driven rod (311) near the snap-fit ​​groove (312). The outer wall of the segmented support sleeve (323) is fixedly connected to the inner wall of the conveying cavity (123), and the electrostatic release rod (321) slides inside the transmission rod (214) on the side near the transmission rod (214).

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