A powder coating spraying device

Abstract

This utility model relates to the field of spraying equipment technology, specifically a powder coating spraying device, including a spray booth, spraying equipment, a loading trolley, and exhaust gas treatment equipment. The exhaust gas treatment equipment includes: a dust filter box connected to the spray booth via an exhaust pipe; a dust extraction fan installed inside the dust filter box; multiple dust removal units arranged in a staggered manner to form a tortuous dust filtration channel; a collection box installed at one end of the dust removal unit near the bottom of the horizontal section for collecting powder coating that falls off the dust removal unit; and a vibration unit installed between the dust removal unit and the side wall of the exhaust pipe for vibrating the dust removal unit. By incorporating the vibration unit, this utility model allows the dust removal unit to vibrate during operation, thereby shaking off the powder coating adhering to the dust removal unit and preventing the continuous accumulation of powder coating on the dust removal unit, which would reduce its filtration capacity.

Description

Technical Field

[0001] This utility model relates to the field of spraying equipment technology, specifically a powder coating spraying device. Background Technology

[0002] Powder coatings are divided into two main categories: thermoplastic and thermosetting. Regardless of the type of powder coating, when using it, a spraying device is required to first evenly spray the powder coating onto the surface of the designated item, and then heat and dry it to set it. Therefore, a spraying device is an indispensable piece of equipment in the process of using powder coatings.

[0003] Chinese utility model patent application number CN201020293957.7 discloses a paint spraying machine, including a frame and a spraying chamber for spraying workpieces disposed within the frame. An exhaust fan is mounted on the frame and connected to the spraying chamber via an exhaust duct. A filter layer is provided between the spraying chamber and the exhaust fan within the exhaust duct to filter and recover excess paint not used during spraying. This paint spraying machine, with its multi-layered paint filter between the spraying chamber and the exhaust fan, can collect a maximum amount of excess paint during the spraying process, significantly reducing paint entering the air and reducing air pollution. The filtered paint can be collected, processed, and reused.

[0004] However, after prolonged use, the multi-layered paint filter layer in the aforementioned paint spraying machine is prone to becoming covered with powder paint, which reduces its dust removal and filtration effect. It does not have the function of automatically cleaning the powder paint adhering to the filter layer, which affects the overall powder paint filtration efficiency. Its structure needs to be improved. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a powder coating spraying device. By incorporating a vibration unit, the device can vibrate the dust removal unit during operation, thereby shaking off the powder coating adhering to the dust removal unit. The specific technical solution is as follows:

[0006] A powder coating spraying apparatus includes a spray booth, spraying equipment, a loading trolley, and an exhaust gas treatment device. The loading trolley is used to transport the workpiece to be sprayed into the spray booth. The spraying equipment is installed in the spray booth and is used to perform powder coating treatment on the workpiece. The exhaust gas treatment device includes:

[0007] The dust filter box is connected to the spray booth via an exhaust pipe;

[0008] A vacuum fan is installed inside the dust filter box to draw air from the dust filter box to the outside of the dust filter box.

[0009] Multiple dust removal units are installed in the horizontal section of the exhaust pipe. The multiple dust removal units are staggered to form a tortuous dust filtration channel, and each dust removal unit is arranged in the vertical direction.

[0010] A collection box is installed at one end of the dust removal unit near the bottom of the horizontal section for collecting powder coating that falls off the dust removal unit.

[0011] A vibration unit is installed between the dust removal unit and the side wall of the exhaust pipe to cause the dust removal unit to vibrate.

[0012] The powder coating spraying device features multiple dust collection units arranged vertically and interspersed to form a tortuous dust filtration channel. This channel allows the powder coating in the spray booth air to adhere as much as possible to the dust collection units, reducing the amount of powder coating entering the outside air and minimizing air pollution. A vibration unit is incorporated to vibrate the dust collection units during operation, shaking off any powder coating adhering to them and preventing continuous accumulation that could reduce the unit's filtration capacity. A collection box is installed at the bottom of the dust collection unit near the horizontal section, facilitating the collection and recycling of powder coating that has detached from the unit.

[0013] Preferably, the loading trolley includes:

[0014] Base;

[0015] The rotary table is fixedly mounted on the base.

[0016] A positioning block is fixedly installed on the rotary table, and a positioning groove is provided along the length direction of the positioning block;

[0017] A positioning bracket is fixedly installed on the positioning block and has a positioning mechanism at its top for fixing the workpiece to be sprayed onto the positioning groove.

[0018] Preferably, the loading trolley further includes:

[0019] The slider is slidably mounted in the positioning groove;

[0020] An elastic component is installed between one end of the slider and one end of the positioning groove, and the other end is fixedly connected to the slider.

[0021] Preferably, the loading trolley further includes:

[0022] The slide rail is fixedly installed on the ground and extends into the spray booth;

[0023] The guide wheel is fixedly installed on the bottom of the base and slidably connected to the slide rail;

[0024] A rack is fixedly installed on the slide rail and parallel to the slide rail;

[0025] The servo motor is fixedly installed at the bottom of the base, and its output shaft is connected to the rack and pinion drive via gears.

[0026] Preferably, the multiple dust removal units are divided into an upper dust removal unit and a lower dust removal unit. The top of the horizontal section is provided with a first mounting hole, and the bottom of the horizontal section is provided with a second mounting hole. The first mounting hole is used to install the upper dust removal unit, and the second mounting hole is used to install the collection box corresponding to the lower dust removal unit.

[0027] Preferably, the vibration unit is a helical spring, and the dust removal unit is a dust removal cloth.

[0028] Preferably, the spray booth includes a roller shutter door, which is installed at the entrance of the spray booth and has a notch at the bottom that matches the slide rail.

[0029] Preferably, the air inlet of the exhaust pipe is equipped with a dust-collecting filter. Attached Figure Description

[0030] The present invention can be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale; rather, the focus is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0031] Figure 1 This is a schematic diagram of the overall structure of a powder coating spraying device according to one embodiment of the present invention. Figure 1 ;

[0032] Figure 2 This is a schematic diagram of the overall structure of a powder coating spraying device according to one embodiment of the present invention. Figure 2 ;

[0033] Figure 3 This is a schematic diagram illustrating the structural relationship between the spray booth and the loading trolley in one embodiment of the present invention. Figure 1 ;

[0034] Figure 4 This is a schematic diagram showing the structural relationship between the spraying equipment and the loading trolley in one embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the loading trolley in one embodiment of the present invention.

[0036] Figure 6 This is a schematic diagram illustrating the structural relationship between the spraying equipment and the loading trolley in one embodiment of the present invention. Figure 2 ;

[0037] Figure 7 This is a schematic diagram showing the structural relationship between the spray booth, spraying equipment and loading trolley in one embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram showing the structural relationship between the positioning block, the positioning groove, and the slider in one embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram showing the structural relationship between the dust removal unit and the vibration unit in one embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram of the structural relationship between the dust removal unit and the vibration unit in another embodiment of the present invention.

[0041] In the diagram: 1. Spray booth; 2. Spraying equipment; 3. Loading trolley; 4. Exhaust gas treatment equipment; 10. Roller shutter door; 30. Slide rail; 31. Guide wheel; 32. Rack; 33. Servo motor; 34. Base; 35. Rotary table; 36. Positioning block; 37. Positioning bracket; 38. Positioning groove; 39. Positioning mechanism; 310. Slider; 311. Elastic component; 40. Dust filter box; 41. Dust removal unit; 42. Collection box; 43. Vibration unit; 44. Exhaust pipe; 45. Cover plate; 440. Horizontal section. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit its scope of protection.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0046] like Figures 1-7 As shown, a powder coating spraying device according to one embodiment of the present invention includes a spray booth 1, a spraying equipment 2, a loading trolley 3, and an exhaust gas treatment device 4. The spray booth 1 is equipped with a spraying robot and a powder coating tank for holding the powder coating. The spraying robot picks up powder coating from the powder coating tank and sprays it onto the workpiece. The spraying robot is the spraying equipment 2. A dust filter is installed at the air inlet of the exhaust pipe 44 to filter large particles of powder coating in the air of the spray booth 1. The loading trolley 3 is used to transport the workpiece to be sprayed into the spray booth 1. Specifically, preferably, the loading trolley 3 includes a base 34, a rotary table 35, a positioning block 36, and a positioning bracket 37.

[0047] The rotary table 35 is fixedly installed on the base 34. It can be a gimbal driven by a motor to rotate the workpiece to be sprayed, so that the spraying equipment 2 can perform all-round spraying treatment on the workpiece.

[0048] The positioning block 36 is fixedly installed on the rotary table 35, and a positioning groove 38 is provided along the length of the positioning block 36. The purpose of providing the positioning groove 38 is to facilitate the installation and fixing of the workpiece to be sprayed.

[0049] The positioning bracket 37 is fixedly mounted on the positioning block 36 and has a positioning mechanism 39 at its top for fixing the workpiece to be sprayed onto the positioning groove 38. The positioning bracket 37 is C-shaped, and the positioning mechanism 39 includes a quick-release clamp mounted on the top of the positioning bracket 37 and a positioning clamping block mounted on the bottom of the quick-release clamp. When the workpiece to be sprayed is placed on the positioning groove 38, the quick-release clamp drives the positioning clamping block to move downwards to fix the workpiece to be sprayed onto the positioning groove 38.

[0050] The loading trolley 3 also includes a slide rail 30, guide wheels 31, a rack 32, and a servo motor 33. The slide rail 30 is fixedly installed on the ground and extends into the spray booth 1. The guide wheels 31 are fixedly installed on the bottom of the base 34 and slidably connected to the slide rail 30. The rack 32 is fixedly installed on the slide rail 30 and parallel to the slide rail 30. The servo motor 33 is fixedly installed on the bottom of the base 34, and its output shaft is connected to the rack 32 via gears.

[0051] The servo motor 33 drives the gear to rotate, which in turn drives the base 34 to move along the length of the rack 32, so as to send the workpiece to be sprayed into the spray booth 1 and to remove the workpiece after the spraying process is completed from the spray booth 1.

[0052] The spray booth 1 includes a roller shutter door 10, which is installed at the entrance of the spray booth 1 and has a notch at the bottom that matches the slide rail 30. When the spraying equipment 2 is not in operation, the roller shutter door 10 is raised, and the workpiece to be sprayed is transferred into the spray booth 1 via the loading trolley 3. Then, the roller shutter door 10 is lowered to perform the spraying process on the workpiece. The notch is designed to ensure that the lowered roller shutter door 10 is flush with the ground, preventing powder coating from drifting out of the entrance of the spray booth 1 during the spraying process.

[0053] As a preferred technical solution, such as Figure 8 As shown, the loading trolley 3 also includes a slider 310 and an elastic component 311.

[0054] The slider 310 is slidably mounted in the positioning groove 38; the elastic member 311 is installed between one end of the slider 310 and one end of the positioning groove 38, with one end fixedly connected to the slider 310 and the other end fixedly connected to one end of the positioning groove 38. The elastic member 311 can be a helical spring. The slider 310 is trapezoidal in shape, with its inclined surface facing upwards. When the workpiece to be coated needs to be inserted into the positioning groove 38, the bottom side of the workpiece first contacts the inclined surface of the slider 310, causing the slider 310 to move towards the end of the positioning groove 38, compressing the elastic member 311, and then being inserted into the positioning groove 38. At this time, the elastic force of the elastic member 311, in conjunction with the positioning mechanism 39, can fix the workpiece to be coated in the positioning groove 38.

[0055] The slider 310 and the elastic component 311 are provided so that the workpieces to be sprayed with different widths can be clamped by the slider 310 and the elastic component 311, so as to prevent the workpieces to be sprayed from moving along the length direction of the positioning groove 38 after being inserted into the positioning groove 38.

[0056] Of course, to better accommodate the clamping and positioning of workpieces of different widths, an adjusting bolt (not shown in the figure) can be provided on one end sidewall of the positioning groove 38, penetrating one end sidewall and threadedly connected to it. The other end of the elastic member 311 is fixedly connected to the adjusting bolt. Thus, by rotating the adjusting bolt, the position of the elastic member 311 relative to one end of the positioning groove 38 can be adjusted, thereby adjusting the initial position of the slider 310 in the positioning groove 38 and the elastic force of the elastic member 311 after clamping the workpiece to be sprayed.

[0057] As a preferred technical solution, such as Figure 9 As shown, the exhaust gas treatment equipment 4 includes a dust filter box 40, a dust extraction fan, multiple dust removal units 41, a collection box 42, and a vibration unit 43.

[0058] The dust filter box 40 is connected to the spray booth 1 via an exhaust pipe 44. A dust extraction fan, such as an axial flow fan, is installed inside the dust filter box 40 to draw air from the dust filter box 40 to the outside of the dust filter box 40. To further purify the air, multiple staggered dust filter screens can be installed in the dust filter box 40.

[0059] Multiple dust removal units 41 are installed in the horizontal section 440 of the exhaust duct 44. The multiple dust removal units 41 are arranged alternately to form a tortuous dust filtration channel, and each dust removal unit 41 is arranged vertically. The purpose of setting up a tortuous dust filtration channel is to increase the path length of air through the dust removal units, and to improve the filtration effect of the dust removal units on the powder coating by using multiple dust removal units to filter the air.

[0060] A collection box 42 is installed at one end of the dust removal unit 41 near the bottom of the horizontal section 440, for collecting powder coating that falls off the dust removal unit 41; a vibration unit 43 is installed between the dust removal unit 41 and the side wall of the exhaust pipe 44, for causing the dust removal unit 41 to vibrate.

[0061] The collection box 42 has a certain depth and a baffle plate is provided on the side facing the horizontal section entrance section to prevent the airflow generated by the dust collector from blowing away the collected powder coating.

[0062] Preferably, the multiple dust removal units 41 are divided into an upper dust removal unit 41 and a lower dust removal unit 41. The top of the horizontal section 440 is provided with a first mounting hole, and the bottom of the horizontal section 440 is provided with a second mounting hole. The first mounting hole is used to install the upper dust removal unit 41, and the second mounting hole is used to install the corresponding collection box 42 of the lower dust removal unit 41.

[0063] Specifically, the vibration unit 43 is a helical spring, and the dust removal unit 41 is a dust removal cloth. The upper dust removal unit 41 is detachably installed in the first mounting hole via a cover plate 45 that matches (slightly smaller or the same size) the size of the first mounting hole. The size of the collection box 42 installed at the lower end of the upper dust removal unit 41 matches the size of the cover plate 45; that is, the length and width of the collection box 42 installed at the lower end of the upper dust removal unit 41 are not greater than the length and width of the cover plate 45. Thus, using the cover plate 45 serves two purposes: firstly, it facilitates the installation of the upper dust removal unit 41; secondly, the cover plate 45, covering the first mounting hole, prevents powder coating in the horizontal section 440 from floating out; and thirdly, it allows the upper dust removal unit 41, along with the collection box 42, to be removed for cleaning or replacement, and for recycling the powder coating collected in the collection box 42.

[0064] Similarly, the lower dust removal unit 41 is detachably installed in the second mounting hole through a cover plate 45 that matches (slightly smaller or the same size) the second mounting hole. The size of the collection box 42 installed at the lower end of the lower dust removal unit 41 matches the size of the cover plate 45. That is, the length and width of the collection box 42 installed at the lower end of the lower dust removal unit 41 are not greater than the length and width of the cover plate 45, so as to facilitate the disassembly of the collection box 42 and the lower dust removal unit 41 and the recycling of the powder coating.

[0065] Furthermore, the dust removal unit 41 includes a frame made of a flexible metal such as stainless steel and a fabric (such as non-woven fabric or fiber cloth) installed in the frame. To enhance the vibration of the dust removal unit 41, such as... Figure 10 As shown, two adjacent dust removal units 41 can be considered as a group, and the helical spring is detachably installed on the frame of the two adjacent dust removal units 41 in the same group.

[0066] The dimensions of the first mounting hole and the second mounting hole are set according to the actual situation. Generally speaking, the dimensions of the two need to facilitate the installation of the vibration unit 43 by technicians.

[0067] Generally, when the spraying equipment is performing powder coating spraying, the dust extraction fan can operate at a relatively stable speed to reduce the vibration of the dust removal unit 41 and the vibration unit 43, allowing the dust removal unit 41 to better adsorb and remove the powder coating in the exhaust pipe. When it is necessary to shake off the powder coating on the dust removal unit 41, the speed of the dust extraction fan can be adjusted to generate periodically varying airflow in the exhaust pipe 44. The varying airflow in the exhaust pipe 44 enhances the vibration value of the dust removal unit 41, thereby shaking off the powder coating on the dust removal unit 41.

[0068] The vibration unit 43 causes the dust removal unit 41 to vibrate, which can shake off the powder coating adhering to the dust removal unit 41. By setting up a collection box 42, the shaken-off powder coating can be collected, which facilitates the recycling and disposal of the powder coating.

[0069] In summary, the powder coating spraying device, by setting up multiple dust removal units and staggering these vertically arranged dust removal units to form a tortuous dust filtration channel, can utilize this tortuous dust filtration channel to ensure that the powder coating in the spray booth air adheres as much as possible to the dust removal units, thereby reducing the amount of powder coating entering the outside air and reducing air pollution. By incorporating a vibration unit, the dust removal units can vibrate during operation, shaking off the powder coating adhering to them and preventing continuous adhesion and accumulation that would reduce the filtration capacity of the dust removal units. The collection box, installed at the bottom end of the dust removal unit near the horizontal section, facilitates the collection of powder coating that has detached from the dust removal unit, making powder coating recycling convenient.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A powder coating spraying apparatus, comprising a spray booth, spraying equipment, a loading trolley, and an exhaust gas treatment device, wherein the loading trolley is used to transport the workpiece to be sprayed into the spray booth, and the spraying equipment is installed in the spray booth and used to perform powder coating treatment on the workpiece to be sprayed, characterized in that, The waste gas treatment equipment includes: The dust filter box is connected to the spray booth via an exhaust pipe; A vacuum fan is installed inside the dust filter box to draw air from the dust filter box to the outside of the dust filter box. Multiple dust removal units are installed in the horizontal section of the exhaust pipe. The multiple dust removal units are staggered to form a tortuous dust filtration channel, and each dust removal unit is arranged in the vertical direction. A collection box is installed at one end of the dust removal unit near the bottom of the horizontal section for collecting powder coating that falls off the dust removal unit. A vibration unit is installed between the dust removal unit and the side wall of the exhaust pipe to cause the dust removal unit to vibrate.

2. A powder coating spray device as claimed in claim 1, characterized in that The loading trolley includes: Base; The rotary table is fixedly mounted on the base. A positioning block is fixedly installed on the rotary table, and a positioning groove is provided along the length direction of the positioning block; A positioning bracket is fixedly installed on the positioning block and has a positioning mechanism at its top for fixing the workpiece to be sprayed onto the positioning groove.

3. A powder coating spray device as claimed in claim 2, wherein, The loading trolley also includes: The slider is slidably mounted in the positioning groove; An elastic component is installed between one end of the slider and one end of the positioning groove, and the other end is fixedly connected to the slider.

4. A powder coating spray device as claimed in claim 3, wherein The loading trolley also includes: The slide rail is fixedly installed on the ground and extends into the spray booth; The guide wheel is fixedly installed on the bottom of the base and slidably connected to the slide rail; A rack is fixedly installed on the slide rail and parallel to the slide rail; The servo motor is fixedly installed at the bottom of the base, and its output shaft is connected to the rack and pinion drive via gears.

5. A powder coating spray device as claimed in claim 4, wherein, The multiple dust removal units are divided into upper dust removal units and lower dust removal units. The top of the horizontal section is provided with a first mounting hole, and the bottom of the horizontal section is provided with a second mounting hole. The first mounting hole is used to install the upper dust removal unit, and the second mounting hole is used to install the corresponding collection box of the lower dust removal unit.

6. A powder coating spray device as claimed in claim 5, wherein, The vibration unit is a helical spring, and the dust removal unit is a dust removal cloth.

7. A powder coating spray device as claimed in claim 6, characterised in that, The spray booth includes a roller shutter door, which is installed at the entrance of the spray booth and has a notch at the bottom that matches the slide rail.

8. A powder coating spray device as claimed in claim 7, characterised in that, The air inlet of the exhaust pipe is equipped with a dust-collecting filter.

9. A powder coating spraying device as described in claim 8, characterized in that, The dust removal cloth includes a frame made of elastic metal and a cloth installed in the frame.

Images