Drying device for plastic spraying room

Abstract

The utility model relates to the technical field of drying, and provides a drying device for a plastic spraying room, which comprises a box body, a rotating frame arranged in the box body, a driving assembly for driving the rotating frame to rotate and a blowing pipe for conveying hot air into the box body, and a plurality of blowing holes are formed in the blowing pipe. The blowing pipes comprise the first blowing pipe arranged on the inner wall of the box body and the second blowing pipe arranged in the middle of the box body, the rotating frame is provided with a plurality of containing discs in the height direction of the rotating frame so that workpieces subjected to plastic spraying can be placed, the first blowing pipe is spirally arranged around the axis of the box body, and the second blowing pipe is spirally arranged around the axis of the box body. And the length direction of the second blowing pipe is parallel to the height direction of the box body. By means of the rotating frame and the driving assembly, plastic spraying workpieces on the containing disc can rotate, the workpieces can be evenly heated, the problems that part of the workpieces are excessively dried and part of the workpieces are not dried in place are solved, the overall drying time is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of drying, and in particular to a drying device for a powder coating room. Background Technology

[0002] Powder coating is a surface treatment method that involves spraying plastic powder onto parts. Also known as electrostatic powder coating, it is a widely used decorative technique for metal surface treatment internationally. Its working principle involves charging plastic powder using a high-voltage electrostatic device. Under the influence of the electric field, the powder is sprayed onto the surface of the workpiece, where it is evenly adsorbed to form a powdery coating. This powdery coating is then baked at high temperatures in a powder coating drying chamber, where it flows and solidifies. The plastic particles melt into a dense final protective coating with varying effects, firmly adhering to the workpiece surface.

[0003] In the existing technology, hot air is blown out of the drying room using gas or electric heating wires to heat the workpiece after powder coating. However, the air blowing pipes are usually fixed to the inner wall of the drying room, which causes the workpieces near the air blowing pipes to be continuously exposed to hot air, resulting in over-drying. The workpieces far from the air blowing pipes may not be dried properly, which will prolong the overall drying time and reduce work efficiency. Therefore, further improvement is needed. Utility Model Content

[0004] To improve work efficiency, this application provides a drying device for a powder coating booth.

[0005] This application provides a drying device for a powder coating booth, which adopts the following technical solution:

[0006] A drying device for a powder coating booth includes a box body, a rotating frame disposed within the box body, a drive assembly for rotating the rotating frame, and an air blowing pipe for supplying hot air into the box body. The air blowing pipe has several air blowing holes. The air blowing pipe includes a first air blowing pipe disposed on the inner wall of the box body and a second air blowing pipe disposed centrally within the box body. The rotating frame has several placement trays disposed along its height direction for placing powder-coated workpieces. The first air blowing pipe is spirally arranged around the axis of the box body. The length direction of the second air blowing pipe is parallel to the height direction of the box body. A first through hole is provided in the middle of each placement tray for the second air blowing pipe to pass through. The second air blowing pipe is used to blow hot air onto the placement tray. The top of the box body is open, and the box body is provided with a cover for opening and closing the opening.

[0007] By adopting the above technical solution, the rotating frame and drive assembly enable the powder-coated workpieces on the placement tray to rotate, ensuring uniform heating and reducing the problems of over-drying and under-drying of some workpieces. This shortens the overall drying time and improves work efficiency. The centrally located second air duct, with its length parallel to the height of the chamber, reduces the possibility of under-drying within the placement tray, resulting in more even hot air distribution and further improving work efficiency. The chamber has an opening at the top and a lid for easy insertion and removal of the powder-coated workpieces.

[0008] Preferably, the drive assembly includes a drive motor disposed at the bottom of the housing, and the output shaft of the drive motor is arranged vertically.

[0009] By adopting the above technical solution, the drive motor is set at the bottom of the box and the output shaft is set vertically, which can drive the rotating frame to rotate, so that the powder-coated workpiece placed on the rotating frame placement plate can rotate, allowing all parts of the workpiece to be evenly dried by hot air.

[0010] Preferably, the rotating frame includes a base plate and support rods disposed on the upper surface of the base plate. Several support rods are spaced apart around the axis of the base plate, and the placement tray is slidably connected to the support rods.

[0011] By adopting the above technical solution, the rotating frame is equipped with a base plate and several support rods spaced apart around the axis of the base plate, so that the placement tray can be slidably connected to the support rods. The position of the placement tray can be flexibly adjusted, which makes it convenient to arrange the placement space reasonably according to different sizes or quantities of powder-coated workpieces. With the help of the drive component to drive the rotating frame to rotate, the workpieces on the placement tray can better receive the hot air delivered by the first air pipe and the second air pipe, thereby improving the drying effect and efficiency.

[0012] Preferably, the inner wall of the support rod is provided with a sliding groove, the sliding groove is provided along the entire length of the support rod, and the side wall of the placement plate is provided with a slider that is slidably connected to the sliding groove.

[0013] Preferably, the lower surface of the box cover is provided with an annular groove, and the upper end of the support rod is slidably connected to the annular groove.

[0014] By adopting the above technical solution, an annular groove is opened on the lower surface of the box cover and the upper end of the support rod is slidably connected to the annular groove, which makes the rotating frame more stable during rotation, reduces shaking, and helps to improve the stability of the powder-coated workpiece placed on the placement tray.

[0015] Preferably, the housing is equipped with a lifting assembly that drives the rotating frame to move up and down in the vertical direction.

[0016] By adopting the above technical solution, the lifting component drives the rotating frame to move vertically up and down, so that the workpiece after powder coating can change position during the drying process. This reduces the problem of over-drying of workpieces near the air blower and under-drying of workpieces far from the air blower due to fixed position, thereby reducing the overall drying time and improving work efficiency.

[0017] Preferably, the lifting assembly includes a cylinder connected to the bottom wall of the housing, a support plate disposed on the piston rod of the cylinder, a first sleeve connected to the output shaft of the drive motor, and a slide rod disposed on the base plate. Several cylinders are spaced apart around the axis of the base plate. The support rod abuts against the lower surface of the base plate. The upper end of the first sleeve is open. The lower end of the slide rod is slidably inserted into the first sleeve. The slide rod and the first sleeve are circumferentially linked.

[0018] By adopting the above technical solution, the cylinders arranged at intervals around the axis of the base plate in the lifting assembly, together with the support plate on the piston rod, can drive the rotating frame to rise and fall vertically, change the relative position of the workpiece on the placement tray and the air blowing pipe, so that all parts of the workpiece can fully contact the hot air, further enhancing the drying effect. At the same time, the lower end of the slide rod is slidably inserted into the first sleeve and is circumferentially linked to ensure that the rotating frame can still rotate normally during the lifting process.

[0019] Preferably, the support rod has a plurality of cross support rods along its own height direction, and the middle of the cross support rod has a third through hole for the second blower pipe to pass through. The lower end of the support rod is detachably connected to the base plate, wherein the distance between two support rods is equal to or greater than the diameter of the placement tray, and the lower surface of the box cover is rotatably connected to a second sleeve for the support rod to slide and insert.

[0020] By adopting the above technical solution, the support rod and the base plate can be detached for easy installation and disassembly of the rotating frame. The entire frame can be separated from the entire box and can be raised and lowered in conjunction with the lifting assembly. The appropriate spacing between the two support rods facilitates the placement and removal of the tray, improving operational convenience. The second sleeve on the lower surface of the box cover allows the support rod to slide and be inserted, ensuring the stability of the rotating frame during rotation and lifting, and helping the powder-coated workpiece to be heated more evenly.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. The rotating frame and drive assembly can rotate the powder-coated workpieces on the tray, so that the workpieces can be heated evenly, reducing the problem of some workpieces being over-dried and some being under-dried, shortening the overall drying time and improving work efficiency.

[0023] 2. The lifting assembly drives the rotating frame to move vertically, allowing the powder-coated workpiece to change position during the drying process. This reduces the problem of over-drying of workpieces near the air blower and under-drying of workpieces far from the air blower due to fixed positions, thereby reducing overall drying time and improving work efficiency. Attached Figure Description

[0024] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of this application;

[0025] Figure 2 This is a schematic diagram of the structure of the driving component in Embodiment 1 of this application;

[0026] Figure 3 This is another structural schematic diagram of the driving component in Embodiment 1 of this application;

[0027] Figure 4 This is a cross-sectional structural diagram of Embodiment 2 of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Partition; 12. Drying chamber; 13. Installation chamber; 14. Box cover; 141. Annular groove; 15. Buckle; 16. Second sleeve; 2. Rotating frame; 21. Base plate; 22. Support rod; 221. Slide groove; 23. Placement tray; 231. Slider; 3. Drive assembly; 31. Drive motor; 32. Drive gear; 33. Driven gear; 4. Air blowing pipe; 41. First air blowing pipe; 42. Second air blowing pipe; 5. Heating mechanism; 51. Heating box; 52. Exhaust pump; 6. Second perforation; 7. Lifting assembly; 71. Cylinder; 72. Support plate; 73. First sleeve; 74. Slide rod; 8. Cross support rod; 81. Third perforation. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail below.

[0030] This application discloses a drying device for a powder coating room.

[0031] Example 1:

[0032] A drying device for a powder coating booth, as described in the reference Figure 1 It includes a housing 1, a rotating frame 2 disposed inside the housing 1, a drive assembly 3 for driving the rotating frame 2 to rotate, and a blower 4 for supplying hot air into the housing 1.

[0033] The box body 1 is cylindrical in shape. A partition 11 is provided inside the box body 1 to divide the box body 1 into a drying chamber 12 and an installation chamber 13 from top to bottom. The top of the box body 1 is open. The box body 1 is provided with a box cover 14 for opening and closing the opening. The box cover 14 is detachably connected to the box body 1 by a buckle 15.

[0034] The rotating frame 2 is located inside the drying chamber 12. Specifically, the rotating frame 2 includes a base plate 21 and support rods 22 fixedly connected to the upper surface of the base plate 21. In this embodiment, the base plate 21 is circular, and several support rods 22 are spaced apart around the axis of the base plate 21. The support rods 22 are vertically positioned; it should be noted that at least three support rods 22 are required. The rotating frame 2 has several placement trays 23 along its height for placing the powder-coated workpieces. Specifically, the inner wall of the support rod 22 has a groove 221 extending along its entire length. The side wall of the placement tray 23 has a slider 231 that slides along the groove 221 to allow the placement trays 23 to slide along the length of the support rod 22 for stacking.

[0035] Reference Figure 1 , Figure 2 In this embodiment, the drive assembly 3 is disposed within the mounting chamber 13. The drive assembly 3 may be a drive motor 31 fixedly connected to the bottom of the housing 1. The output shaft of the drive motor 31 is vertically arranged and rotatably passes through the partition 11 to extend into the drying chamber 12. The output shaft of the drive motor 31 is connected to the lower surface of the bottom plate 21. Alternatively, as shown... Figure 3 As shown, it also includes a drive gear 32 connected to the output shaft of the drive motor 31 and a driven gear 33 disposed at the bottom of the rotating frame 2, with the drive gear 32 meshing with the driven gear 33.

[0036] The blowing pipe 4 is located inside the drying chamber 12. The blowing pipe 4 has several blowing holes along its length, which blow air onto the workpiece on the placement tray 23. The blowing pipe 4 specifically includes a first blowing pipe 41 located on the inner wall of the drying chamber 12 and a second blowing pipe 42 located in the center of the drying chamber 12. The first blowing pipe 41 is spirally arranged around the axis of the drying chamber 12. A heating mechanism 5 for supplying hot air to the first blowing pipe 41 is provided in the installation chamber 13. The heating mechanism 5 includes a heating box 51 fixedly connected to the installation chamber 13 and an exhaust pump 52 connected to the heating box 51. The lower end of the first blowing pipe 41 extends into the installation chamber 13 and connects to the air outlet of the exhaust pump 52.

[0037] The placement tray 23 has a first through hole in its center for the second air blower 42 to pass through. The second air blower 42 blows hot air toward the placement tray 23. In this embodiment, the length of the second air blower 42 is parallel to the height of the drying chamber 12. It should be noted that if... Figure 2The drive component 3 in the middle, at this time, the upper end of the second air pipe 42 can be fixedly inserted through the box cover 14, and the lower end of the second air pipe 42 is closed so that it can pass through several first through holes after the box cover 14 is closed on the box body 1. For the hot air delivery in the second air pipe 42, hot air is delivered to the second air pipe 42 through the external heating mechanism 5. If it is Figure 3 The drive component 3 in the middle, at this time, both the base plate 21 and the driven gear 33 are provided with a second through hole 6 for the lower end of the second air pipe 42 to pass through. The lower end of the second air pipe 42 can be rotated through the partition 11 to extend into the installation chamber 13 and connect with the exhaust pump 52 located in the installation chamber 13, thereby delivering hot air to the second air pipe 42.

[0038] Furthermore, to improve the stability of the rotating frame 2 during rotation, an annular groove 141 is provided on the lower surface of the box cover 14, and the upper end of the support rod 22 is slidably connected to the annular groove 141.

[0039] Furthermore, to improve drying uniformity, in this embodiment, a lifting assembly 7 is provided inside the housing 1 to drive the rotating frame 2 to move up and down vertically. Figure 2 When the drive assembly 3 is in operation, the lifting assembly 7 specifically includes a cylinder 71 connected to the bottom wall of the installation chamber 13, a support plate 72 disposed on the piston rod of the cylinder 71, a first sleeve 73 connected to the output shaft of the drive motor 31, and a slide rod 74 disposed on the base plate 21. Several cylinders 71 are spaced apart around the axis of the base plate 21. The piston rod of the cylinder 71 is vertically positioned and passes through the partition plate 11 to extend into the drying chamber 12. The support plate 72 abuts against the lower surface of the base plate 21. The upper end of the first sleeve 73 is open. The upper end of the slide rod 74 is fixedly connected to the base plate 21, and the lower end of the slide rod 74 is slidably inserted into the first sleeve 73. The slide rod 74 and the first sleeve 73 are circumferentially linked. Figure 3 When the drive component 3 is in the middle, the upper end of the first sleeve 73 is fixedly inserted through the drive gear 32 to be fixedly connected with the base plate 21, the slide rod 74 is fixedly connected with the output shaft of the drive motor 31, and the slide rod 74 and the first sleeve 73 are circumferentially linked.

[0040] The principle of the drying device for a powder coating booth according to this application embodiment is as follows: The rotating frame 2 is driven by a drive motor 31, causing the workpiece placed on the placement tray 23 to continuously change position. Simultaneously, the first air duct 41 spirally delivers hot air from the side, and the second air duct 42 delivers hot air upwards from the center, heating and drying the workpiece from all directions. This method reduces the uneven drying problem caused by the fixed air ducts 4, improving drying efficiency and the drying quality of the workpiece.

[0041] In conjunction with the lifting assembly 7, the rotating frame 2 can move up and down in the vertical direction. During the drying process, the lifting of the rotating frame 2 can make the workpiece come into better contact with hot air at different heights, further improving the uniformity of drying.

[0042] Example 2:

[0043] Reference Figure 4 The difference from Embodiment 1 is that the support rod 22 is provided with a number of cross support rods 8 along its own height direction. The middle of the cross support rod 8 is provided with a third through hole 81 for the second blower pipe 42 to pass through. The lower end of the support rod 22 is detachably connected to the base plate 21. Specifically, the base plate 21 is provided with a slot for the lower end of the support rod 22 to be inserted. The distance between two support rods 22 is equal to or greater than the diameter of the placement plate 23. The lower surface of the box cover 14 is rotatably connected with a second sleeve 16 for the support rod 22 to slide and be inserted.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drying device for a powder coating booth, characterized in that: The device includes a housing (1), a rotating frame (2) disposed within the housing (1), a drive assembly (3) for rotating the rotating frame (2), and a blower pipe (4) for supplying hot air into the housing (1). The blower pipe (4) has several blow holes and includes a first blower pipe (41) disposed on the inner wall of the housing (1) and a second blower pipe (42) disposed centrally within the housing (1). The rotating frame (2) has several placement trays (23) disposed along its height. The first blower pipe (41) is spirally arranged around the axis of the box (1), and the length direction of the second blower pipe (42) is parallel to the height direction of the box (1). The middle part of the placement tray (23) is provided with a first through hole for the second blower pipe (42) to pass through. The second blower pipe (42) is used to blow hot air to the placement tray (23). The top of the box (1) is open, and the box (1) is provided with a box cover (14) for opening and closing the opening.

2. The drying device for a powder coating booth according to claim 1, characterized in that: The drive assembly (3) includes a drive motor (31) disposed at the bottom of the housing (1), and the output shaft of the drive motor (31) is arranged vertically.

3. A drying device for a powder coating booth according to claim 2, characterized in that: The rotating frame (2) includes a base plate (21) and a support rod (22) disposed on the upper surface of the base plate (21). Several support rods (22) are spaced apart around the axis of the base plate (21). The placement plate (23) is slidably connected to the support rod (22).

4. A drying device for a powder coating booth according to claim 3, characterized in that: The inner wall of the support rod (22) is provided with a sliding groove (221), which is set along the entire length of the support rod (22). The side wall of the placement plate (23) is provided with a slider (231) that is slidably connected to the sliding groove (221).

5. A drying device for a powder coating booth according to claim 3, characterized in that: The lower surface of the box cover (14) is provided with an annular groove (141), and the upper end of the support rod (22) is slidably connected to the annular groove (141).

6. A drying device for a powder coating booth according to claim 3, characterized in that: The housing (1) is equipped with a lifting assembly (7) that drives the rotating frame (2) to move up and down in the vertical direction.

7. A drying device for a powder coating booth according to claim 6, characterized in that: The lifting assembly (7) includes a cylinder (71) connected to the bottom wall of the housing (1), a support plate (72) disposed on the piston rod of the cylinder (71), a first sleeve (73) connected to the output shaft of the drive motor (31), and a slide rod (74) disposed on the base plate (21). Several cylinders (71) are arranged at intervals around the axis of the base plate (21). The support plate (72) abuts against the lower surface of the base plate (21). The upper end of the first sleeve (73) is open. The lower end of the slide rod (74) is slidably inserted into the first sleeve (73). The slide rod (74) and the first sleeve (73) are circumferentially linked.

8. A drying device for a powder coating booth according to claim 6, characterized in that: The support rod (22) has several cross support rods (8) arranged along its own height direction. The middle of the cross support rod (8) is provided with a third through hole (81) for the second blow pipe (42) to pass through. The lower end of the support rod (22) is detachably connected to the base plate (21). The distance between two support rods (22) is equal to or greater than the diameter of the placement tray (23). The lower surface of the box cover (14) is rotatably connected to a second sleeve (16) for the support rod (22) to slide and insert.

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