Powder coating device

Abstract

The utility model relates to the technical field of coating equipment, and provides a powder coating device which comprises a powder barrel, a fluidization plate and a partition plate are arranged in the powder barrel, and the powder barrel is divided into a fluidization cavity and a gas cavity located below the fluidization cavity by the fluidization plate; the partition plates are arranged in the gas cavity and divide the gas cavity into a plurality of cavities which are sequentially arranged in the circumferential direction of the powder barrel and are independent of one another. A gas pipe is arranged in each cavity, one end of each gas pipe is provided with a gas outlet, and the other end of each gas pipe extends out of the powder barrel and is provided with a gas inlet. Compared with the prior art, the powder coating device provided by the utility model has the advantages that the gas cavity is divided into the plurality of independent chambers which are sequentially arranged along the circumferential direction of the powder barrel through the partition plates, each chamber is internally provided with the gas pipe, and airflow flows out of the plurality of chambers, so that the coating is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of coating equipment, in particular to a powder coating device. Background Technique

[0002] At present, in order to improve the anti-corrosion performance of workpieces, a protective layer is usually coated on the surface of the workpieces after cleaning. The coating processes can be divided into electrostatic powder spraying method, powder electrophoresis method, fluidized bed method and electrostatic fluidized bed method, etc. Among them, in the electrostatic powder spraying method, the workpiece to be coated is grounded, and the powder particles are sprayed by a spray gun and fly to the workpiece to be coated under the action of an electrostatic field; in the powder electrophoresis method, the resin powder is dispersed in the electrophoretic paint and attached to the surface of the workpiece to be coated according to the electrophoretic coating method, and a coating is formed during baking; in the fluidized bed method, the workpiece to be coated is preheated to a temperature higher than the melting temperature of the powder, and the workpiece to be coated is immersed in the powder, and the powder melts and adheres to the surface of the workpiece to be coated and forms a complete coating by heating; in the electrostatic fluidized bed method, the cold workpiece to be coated forms a coating by electrostatically adsorbing powder.

[0003] In the coating process of the fluidized bed method, the powder needs to be placed in a container so that the powder particles keep floating and tumbling in the flowing air current, that is, the fluidized state is achieved. In the traditional powder bucket of the fluidized bed method, an air pipe is arranged at the center of the bottom surface inside the powder bucket, and a fluidizing plate is arranged inside the powder bucket, so that the inner cavity of the powder bucket is divided into an air cavity and a powder cavity for filling powder coating. The air current enters the powder cavity through the fluidizing plate. Since the air current comes out from the center of the bottom of the powder bucket intensively, the fluidity of the powder is poor, affecting the uniformity of coating. Content of the Utility Model

[0004] The purpose of the utility model is to provide a powder coating device to solve the technical problem of uneven coating caused by the intensive outflow of air current in the prior art.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is: to provide a powder coating device, including a powder bucket, a fluidizing plate and a partition plate are arranged inside the powder bucket. The fluidizing plate divides the powder bucket into a fluidizing cavity and a gas cavity located below the fluidizing cavity; the partition plate is arranged in the gas cavity, and the partition plate divides the gas cavity into a plurality of chambers arranged in sequence along the circumferential direction of the powder bucket and independent of each other; a gas pipe is arranged in each chamber, one end of the gas pipe is provided with an air outlet, and the other end extends to the outside of the powder bucket and is provided with an air inlet.

[0006] Further, the partition plate divides the gas cavity into four chambers, and the four chambers are arranged in sequence along the circumferential direction of the powder bucket.

[0007] Further, the powder bucket has a rectangular cross section, and the gas pipes are arranged on two opposite side walls of the powder bucket.

[0008] Further, in each chamber, the air outlet of the gas pipe is located at the center of the chamber.

[0009] Further, the distance between the air outlet of each gas pipe and the bottom surface of the gas chamber is greater than or equal to 50 mm.

[0010] Further, a dust removal channel is provided on the powder bucket, and dust removal holes communicating with the dust removal channel are formed on the inner wall of the powder bucket in the fluidization chamber.

[0011] Further, the powder coating device further includes a powder collection assembly, and the powder collection assembly includes a powder collection box located below the powder bucket and a powder collection pipe with one end connected to the powder collection box, and the other end of the powder collection pipe extends into the fluidization chamber.

[0012] Further, a valve and a power member capable of controlling the opening and closing of the valve are provided between the powder collection pipe and the powder collection box.

[0013] Further, the powder bucket includes an upper barrel body and a lower barrel body connected below the upper barrel body; the upper barrel body and the lower barrel body are fixedly connected by a locking structure, and the locking structure includes a plurality of locking members respectively connected to the upper barrel body and the lower barrel body, and the plurality of locking members are spaced along the circumferential direction of the powder bucket.

[0014] Further, the locking member includes a locking rod and two deformable clamping arms respectively connected to the ends of the locking rod.

[0015] Compared with the prior art, the powder coating device provided by the present utility model includes a powder bucket, a fluidization plate and a partition plate are arranged in the powder bucket, the fluidization plate divides the powder bucket into a fluidization chamber and a gas chamber, the partition plate divides the gas chamber into a plurality of chambers arranged in sequence along the circumferential direction of the powder bucket and independent of each other, and a gas pipe is arranged in each chamber.

[0016] The beneficial effect of the powder coating device provided by the present utility model is that: compared with the prior art, in the powder coating device of the present utility model, the gas chamber is divided into a plurality of chambers arranged in sequence along the circumferential direction of the powder bucket and independent of each other by the partition plate, and a gas pipe is arranged in each chamber, and the air flow flows out from the plurality of chambers, so that the coating is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the powder coating device provided by the embodiment of the present utility model;

[0018] Figure 2 is Figure 1 a cross-sectional view taken along the P-P plane in

[0019] Figure 3 is Figure 2 an enlarged view of part A in

[0020] Figure 4 is a three-dimensional schematic diagram of the powder bucket provided by the embodiment of the present utility model;

[0021] Figure 5 It is a three-dimensional schematic diagram of the powder barrel and the fluidizing plate provided by the embodiment of the utility model when they are separated;

[0022] Figure 6 It is a top view schematic diagram of the powder barrel and the fluidizing plate provided by the embodiment of the utility model when they are separated.

[0023] Main component symbols

[0024] 100-powder coating device; 10-powder barrel; 11-partition plate; 12-fluidizing chamber; 13-gas chamber; 14-chamber; 15-gas pipe; 151-gas outlet; 152-gas inlet; 16-dust removal channel; 17-dust removal hole; 18-dust removal connection port; 20-fluidizing plate; 30-upper barrel; 31-connecting part; 40-lower barrel; 41-transfer part; 41a-recessed cavity; 411-first horizontal part; 412-vertical part Straight portion; 413-second horizontal portion; 51-first elastomeric sealing component; 52-sealing glue layer; 53-second elastomeric sealing component; 54-adhesive layer; 60-locking structure; 61-locking component; 611-locking rod; 612-clamping arm; 61a-first locking component; 61b-second locking component; 62-metal pad; 70-powder collecting assembly; 71-powder collecting box; 72-powder collecting pipe; 73-power part. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the implementation of the present invention is described in detail below in conjunction with specific drawings.

[0027] For the convenience of description, the "front", "rear", "left", "right", "up" and "down" referred to below are consistent with the front, rear, left, right, up and down directions of the drawings themselves, but do not limit the structure of the present invention.

[0028] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings as understood by those of ordinary skill in the art to which this utility model pertains. The terms "first", "second" and similar terms used in the specification and claims of this utility model patent application do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "one" do not denote a quantity limitation, but mean that there is at least one.

[0029] As Figures 1 to 6 shown, the powder coating device 100 provided in this embodiment includes a powder bucket 10. A fluidizing plate 20 and a partition plate 11 are arranged in the powder bucket 10. The fluidizing plate 20 divides the powder bucket 10 into a fluidizing chamber 12 and a gas chamber 13 located below the fluidizing chamber 12; the partition plate 11 is arranged in the gas chamber 13, and the partition plate 11 divides the gas chamber 13 into a plurality of chambers 14 arranged in sequence along the circumference of the powder bucket 10 and independent of each other; a gas pipe 15 is arranged in each chamber 14. One end of the gas pipe 15 is provided with an air outlet 151, and the other end extends to the outside of the powder bucket 10 and is provided with an air inlet 152.

[0030] For the above-mentioned powder coating device 100, the gas chamber 13 is divided into a plurality of chambers 14 arranged in sequence along the circumference of the powder bucket 10 and independent of each other by the partition plate 11. A gas pipe 15 is arranged in each chamber 14, and the air flow flows out from the plurality of chambers 14, making the coating more uniform.

[0031] Refer to Figure 1 FIGs. 5 to 6, the powder coating device 100 provided in this embodiment is used to coat an insulating protective layer on a stator after cleaning. It includes a powder bucket 10. A fluidizing plate 20 is arranged in the powder bucket 10. The fluidizing plate 20 divides the powder bucket 10 into a fluidizing chamber 12 and a gas chamber 13 arranged up and down. In this embodiment, the powder bucket 10 includes an upper bucket body 30 and a lower bucket body 40 connected below the upper bucket body 30. The fluidizing plate 20 is arranged between the upper bucket body 30 and the lower bucket body 40. The fluidizing plate 20 divides the powder bucket 10 into a fluidizing chamber 12 and a gas chamber 13 located below the fluidizing chamber 12. Among them, the fluidizing chamber 12 is located in the upper bucket body 30, and the gas chamber 13 is located in the lower bucket body 40.

[0032] In other embodiments, the powder bucket 10 can be integrally formed.

[0033] Refer to Figures 1 to 3, for the powder bucket 10 provided in this embodiment, the upper barrel body 30 includes a connecting portion 31 located at its bottom and protruding from the outer wall of the upper barrel body 30, and the lower barrel body 40 includes an adapter portion 41 located at its top and detachably connected to the connecting portion 31; a first elastomeric sealing member 51 for sealing the gap between the connecting portion 31 and the adapter portion 41 is provided, and a sealing glue layer 52 and a second elastomeric sealing member 53 for sealing the gap between the adapter portion 41 and the bottom surface of the fluidizing plate 20 are provided. In this embodiment, the upper barrel body 30 has a cross-section that is, but not limited to, rectangular. The upper barrel body 30 includes a connecting portion 31, and the connecting portion 31 is located at the bottom of the upper barrel body 30; the lower barrel body 40 has a cross-section that is, but not limited to, rectangular. The lower barrel body 40 includes an adapter portion 41 corresponding to the connecting portion 31, and the adapter portion 41 is detachably connected to the connecting portion 31. The adapter portion 41 is located at the top of the lower barrel body 40. The adapter portion 41 has a cavity 41a for the edge of the fluidizing plate 20 to be inserted, and the cavity 41a extends along the entire circumference of the lower barrel body 40. An annular first elastomeric sealing member 51 is provided between the connecting portion 31 and the adapter portion 41, and the first elastomeric sealing member 51 is, but not limited to, a sealing ring; a sealing glue layer 52 and an annular second elastomeric sealing member 53 for sealing the gap between the adapter portion 41 and the bottom surface of the fluidizing plate 20 are provided. The second elastomeric sealing member 53 is, but not limited to, a sealing ring, and the sealing glue layer 52 is, but not limited to, an electronic silica gel layer.

[0034] In other embodiments, the first elastomeric sealing member 51 and / or the second elastomeric sealing member 53 is a sealing gasket.

[0035] See Figures 1 to 3 , in this embodiment, the connecting portion 31 is located at the bottom of the upper barrel body 30 and protrudes from the outer wall of the upper barrel body 30. The connecting portion 31 can be formed by bending the barrel wall of the upper barrel body 30 outward, or by welding. In this way, the thickness of the barrel wall of the upper barrel body 30 does not need to be too large, and the overall weight is lighter.

[0036] In other embodiments, the barrel wall of the upper barrel body 30 has a certain thickness, which can achieve docking with the lower barrel body 40 and a first elastomeric sealing member 51 is provided between the two.

[0037] See Figure 2 and Figure 3 , in this embodiment, the number of the first elastomeric sealing members 51 is, but not limited to, one, and the number of the second elastomeric sealing members 53 is, but not limited to, two. The sealing glue layer 52 is filled between the two second elastomeric sealing members 53. In this way, first, the two second elastomeric sealing members 53 are provided, then the sealing glue layer 52 is applied between the two second elastomeric sealing members 53, and then the fluidizing plate 20 is pressed on. In this way, it is convenient to set and shape the sealing glue layer 52.

[0038] In yet another embodiment, the number of the second elastomeric sealing component 53 is one, and the sealant layer 52 is located on the inner side of the second elastomeric sealing component 53 .

[0039] In other embodiments, the sealant layer 52 covers the second elastomeric sealing member 53 .

[0040] See also Figure 2 and Figure 3 In this embodiment, an adhesive layer 54 is provided between the connecting portion 31 and the fluidizing plate 20. In this embodiment, the adhesive layer 54 is but not limited to a eutectic layer and extends along the entire circumference of the powder barrel 10. In this way, the fluidizing plate 20 and the upper barrel body 30 can be fixed by the adhesive layer 54.

[0041] See also Figures 1 to 3 In the present embodiment, the transition portion 41 of the lower barrel body 40 includes a first horizontal portion 411 extending outward from the side wall of the top of the lower barrel body 40, a vertical portion 412 extending upward from the first horizontal portion 411, and a second horizontal portion 413 extending outward from the vertical portion 412; a first elastomeric sealing member 51 is arranged between the connecting portion 31 and the second horizontal portion 413; the first horizontal portion 411 and the vertical portion 412 jointly define a concave cavity 41a for the edge of the fluidizing plate 20 to be placed, a sealant layer 52 and a second elastomeric sealing member 53 are arranged between the bottom surface of the fluidizing plate 20 and the first horizontal portion 411; an adhesive layer 54 is arranged between the connecting portion 31 and the top surface of the fluidizing plate 20. It is understandable that the transition portion 41 can be formed by punching the barrel wall of the lower barrel body 40 outward, or by welding. In this way, using the above-mentioned transition portion 41 structure, the fluidizing plate 20 is placed in the concave cavity 41a around and supported by the transition portion 41 of the lower barrel body 40. The barrel wall thickness of the lower barrel body 40 does not need to be too large, and the overall weight is lighter.

[0042] In other embodiments, the barrel wall of the lower barrel body 40 has a certain thickness, which can be connected with the upper barrel body 30, and a first elastomeric sealing component 51 is set between the two, and the fluidizing plate 20 can be supported and a sealant layer 52 and a second elastomeric sealing component 53 are set.

[0043] See also Figures 1 to 6The upper barrel body 30 and the lower barrel body 40 provided in this embodiment are fixedly connected by a locking structure 60, and the locking structure 60 includes a plurality of locking members 61 respectively connected to the connecting portion 31 and the transition portion 41, and the plurality of locking members 61 are spaced along the circumference of the powder barrel 10. In this embodiment, the locking member 61 includes a locking rod 611 and two deformable clamping arms 612 respectively connected to the ends of the locking rod 611, and the connecting portion 31 and the transition portion 41 are clamped between the two clamping arms 612. It is easy to understand that after the upper barrel body 30 and the lower barrel body 40 are docked, the plurality of locking members 61 are respectively inserted into the outside of the connecting portion 31 and the transition portion 41 along the circumference of the powder barrel 10, and then the two clamping arms 612 are bent inwardly, so as to clamp the connecting portion and the transition portion 41, so as to achieve the fixation of the upper barrel body 30 and the lower barrel body 40, and compress the first elastic body sealing member 51.

[0044] In other embodiments, the upper barrel body 30 and the lower barrel body 40 may also be locked by screws.

[0045] See also Figure 1 In the present embodiment, the plurality of locking members 61 are divided into a first locking member 61a and a second locking member 61b having a smaller size than the first locking member 61a, wherein the first locking member 61a clamps the connecting portion 31 and the first horizontal portion 411 of the transition portion 41, and the second locking member 61b clamps the connecting portion 31 and the second horizontal portion 413 of the transition portion 41.

[0046] See also Figure 2 and Figure 3 In this embodiment, metal pads 62 are provided between the connection portion 31 and the locking member 61, and between the transition portion 41 and the locking member 61. In this embodiment, metal pads 62 are provided between the first locking member 61a and the connection portion 31, between the first locking member 61a and the first horizontal portion 411 of the transition portion 41, between the second locking member 61b and the connection portion 31, and between the second locking member 61b and the second horizontal portion 413 of the transition portion 41, so that the upper barrel body 30 and the lower barrel body 40 can be more evenly stressed when the locking member 61 is locked.

[0047] See also Figure 5 and Figure 6, the powder bucket 10 provided in this embodiment is provided with a partition plate 11 therein; the partition plate 11 is arranged in the gas chamber 13, and the partition plate 11 divides the gas chamber 13 into a plurality of chambers 14 that are arranged in sequence along the circumference of the powder bucket 10 and are independent of each other; a gas pipe 15 is arranged in each chamber 14, one end of the gas pipe 15 is provided with an air outlet 151, and the other end extends to the outside of the powder bucket 10 and is provided with an air inlet 152. In this embodiment, the fluidization chamber 12 is located inside the upper barrel body 30, the gas chamber 13 is located inside the lower barrel body 40, the number of the partition plates 11 is four but not limited to four, and the four partition plates 11 extend from the center of the bottom surface to the inner wall of the lower barrel body 40. The inner ends of the partition plates 11 are welded and fixed to each other, and the outer ends are welded to the lower barrel body 40, dividing the gas chamber 13 into four chambers 14 that are substantially rectangular and have substantially the same volume. The four chambers 14 are arranged in sequence along the circumference of the powder bucket 10.

[0048] In other embodiments, the number of the partition plates 11 can also be two, three, five or more. When there are three or more, the included angles between adjacent partition plates 11 are the same.

[0049] See Figure 5 and Figure 6 , the gas pipe 15 is arranged in the chamber 14 provided in this embodiment. In this embodiment, the number of the gas pipes 15 in each chamber 14 is one but not limited to one. The air outlet 151 of the gas pipe 15 is substantially located at the center of the chamber 14, and the air inlet 152 of the gas pipe 15 is connected to a gas source device (not shown in the figure).

[0050] In other embodiments, the number of the gas pipes 15 in the chamber 14 can be two or more.

[0051] See Figure 5 and Figure 6 , in this embodiment, the powder bucket 10 has a rectangular cross-section, and the gas pipes 15 are arranged on two opposite side walls of the powder bucket 10.

[0052] In other embodiments, the gas pipes 15 in adjacent chambers 14 are arranged on two adjacent side walls of the powder bucket 10.

[0053] See Figure 5 and Figure 6 , in this embodiment, the distance between the air outlet 151 of each gas pipe 15 and the bottom surface of the gas chamber 13 is greater than or equal to 50 mm, and it is sufficient to ensure that the air outlet 151 faces downward.

[0054] Please return to see Figure 1 and Figure 2, a dust removal channel 16 is provided on the powder bucket 10 provided in this embodiment. Dust removal holes 17 communicating with the dust removal channel 16 are formed on the inner wall of the powder bucket 10 in the fluidization chamber 12. In this embodiment, a dust removal connection port 18 communicating with the dust removal channel 16 is formed on the outer wall of the powder bucket 10 in the fluidization chamber 12. The dust removal connection port 18 is connected to an external explosion-proof dust collector (not shown in the figure). Dust removal holes 17 communicating with the dust removal channel 16 are provided on each inner wall of the powder bucket 10 in the fluidization chamber 12. It is easy to understand that by providing the dust removal channel 16 and the dust removal holes 17, the insulating powder lifted in the fluidization chamber 12 can be sucked into the dust removal channel 16 through the dust removal holes 17 and sent to the explosion-proof dust collector through the dust removal connection port 18. In this way, it is possible to prevent the insulating powder from flying everywhere during powder addition to prevent dust explosion.

[0055] See Figure 1 and Figure 2 , the powder coating device 100 provided in this embodiment further includes a powder collection assembly 70. The powder collection assembly 70 includes a powder collection box 71 located below the powder bucket 10 and a powder collection pipe 72 with one end connected to the powder collection box 71. The other end of the powder collection pipe 72 extends into the fluidization chamber 12. In this embodiment, a valve (not shown in the figure) and a power member 73 capable of controlling the opening and closing of the valve are provided between the powder collection pipe 72 and the powder collection box 71. The power member 73 is, but not limited to, a cylinder. In this way, after the coating operation is completed, the valve can be controlled to open by the power member 73 to conduct the powder collection pipe 72, and the remaining insulating powder in the fluidization chamber 12 falls back into the powder collection box 71 through the powder collection pipe 72 for the next coating use, thereby saving costs.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, or improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A powder coating device, characterized in that: It includes a powder barrel, wherein a fluidizing plate and a partition plate are arranged in the powder barrel, wherein the fluidizing plate divides the powder barrel into a fluidizing chamber and a gas chamber located below the fluidizing chamber; the partition plate is arranged in the gas chamber, wherein the partition plate divides the gas chamber into a plurality of chambers which are arranged in sequence along the circumference of the powder barrel and are independent of each other; a gas pipe is arranged in each chamber, wherein one end of the gas pipe is provided with an air outlet, and the other end extends to the outside of the powder barrel and is provided with an air inlet.

2. The powder coating device according to claim 1, characterized in that The partition plate divides the gas cavity into four chambers, and the four chambers are arranged in sequence along the circumference of the powder barrel.

3. The powder coating device according to claim 1, characterized in that: The powder barrel has a rectangular cross section, and the gas pipe is arranged on two opposite side walls of the powder barrel.

4. The powder coating device according to claim 1, characterized in that In each of the chambers, the gas outlet of the gas pipe is located at the center of the chamber.

5. The powder coating device according to claim 1, characterized in that: The distance between the gas outlet of each gas pipe and the bottom surface of the gas cavity is greater than or equal to 50 mm.

6. The powder coating device according to any one of claims 1 to 5, characterized in that: The powder barrel is provided with a dust removal channel, and the powder barrel is provided with a dust removal hole communicated with the dust removal channel on the inner wall of the fluidizing chamber.

7. The powder coating device according to any one of claims 1 to 5, characterized in that: It also includes a powder collecting assembly, which includes a powder collecting box located below the powder barrel and a powder collecting pipe connected to the powder collecting box at one end, and the other end of the powder collecting pipe extends into the fluidizing chamber.

8. The powder coating device according to claim 7, characterized in that A valve and a power part capable of controlling the opening and closing of the valve are arranged between the powder collecting pipeline and the powder collecting box.

9. The powder coating device according to any one of claims 1 to 5, characterized in that: The powder barrel includes an upper barrel body and a lower barrel body connected below the upper barrel body; the upper barrel body and the lower barrel body are fixedly connected by a locking structure, and the locking structure includes a plurality of locking components respectively connected to the upper barrel body and the lower barrel body, and the plurality of locking components are spaced along the circumference of the powder barrel.

10. The powder coating device according to claim 9, characterized in that The locking component comprises a locking rod and two deformable clamping arms respectively connected to the ends of the locking rod.

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