A method and apparatus for the preparation of a powder coating

Abstract

The application belongs to the technical field of waste gas treatment, and particularly discloses a preparation method and device of powder coating, which comprises a dissolving cylinder, a grid cover is arranged between the top of the dissolving cylinder, a cylindrical port penetrating to the bottom is formed in the bottom surface of the inside of the dissolving cylinder, a conduit is arranged in the inside of the cylindrical port, the top of the conduit is closed, the two side inner walls of the cylindrical port are both fixed with a support plate connected with the conduit, and an induction device is arranged between the inner wall of the dissolving cylinder and the outer surface of the conduit; the liquid level in the inside of the dissolving cylinder is sensed by the induction device, so that the gas passing in can be purified when the liquid level is not too low, the opening and closing of the filter port can be controlled by the adjusting assembly, the solution in the inside of the dissolving cylinder is replaced conveniently, the pollution removal assembly is driven to work when the adjusting assembly works, the stains on the filter port are removed, and the removed stains are discharged.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a method and apparatus for preparing powder coatings. Background Technology

[0002] Powder coatings are solid powdered synthetic resin coatings composed of solid resin, pigments, fillers, and additives. The production of powder coatings generates waste gas containing particles and easily soluble corrosive and toxic substances. Direct emission of this waste gas into the air will pollute the atmosphere, so it must be treated before being released.

[0003] Currently, most methods for treating exhaust gas containing particles involve filtration. However, when particles contain easily soluble toxic substances, they can easily corrode the filter screen when they adhere to it. Furthermore, a high degree of particle adhesion can reduce the permeability of the filter screen. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a method and apparatus for preparing powder coatings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a powder coating preparation apparatus, comprising a dissolving cylinder, a grid cover provided between the top and bottom of the dissolving cylinder, a cylindrical opening extending to the bottom of the inner bottom surface of the dissolving cylinder, a conduit provided inside the cylindrical opening, the top of the conduit being closed, support plates connected to the conduit being fixed on both sides of the inner wall of the cylindrical opening, a sensing device provided between the inner wall of the dissolving cylinder and the outer surface of the conduit, an adjustment component provided on the outer surface of the conduit, and a sewage discharge component provided on the dissolving cylinder; Both outer surfaces of the dissolving cylinder are fixed with air inlet pipes. The bottom surface of the dissolving cylinder is provided with multiple dispersion ports at equal intervals at one end of the air inlet pipe, and one end of each dispersion port extends into the air inlet pipe.

[0006] Preferably, the adjusting assembly includes an annular sealing plate, an inner annular groove is formed between the inner walls of the cylindrical opening, an outer annular groove is formed on the outer surface of the conduit, the outer side of the annular sealing plate is slidably sealed and engaged inside the inner annular groove, and the inner side of the annular sealing plate is slidably sealed and engaged inside the outer annular groove.

[0007] Preferably, the outer surfaces of both sides of the conduit are provided with openings above the annular sealing plate, and multiple filter ports are provided at equal intervals on the inner bottom surfaces of the two openings. The multiple filter ports all penetrate into the interior of the conduit. An adjusting sleeve is rotatably engaged on the outer surface of the conduit, and the top of the adjusting sleeve is fixed to the bottom of the annular sealing plate.

[0008] Preferably, each of the two openings has an arc-shaped receiving cavity extending into the inner wall of the conduit on one side of its inner wall. The arc-shaped receiving cavity is located on one side of the filter port. Each of the two openings has an arc-shaped extrusion cavity extending into the inner wall of the conduit on the other side of its inner wall. The arc-shaped extrusion cavity is located on the other side of the filter port. The inner walls of the arc-shaped receiving cavity and the arc-shaped extrusion cavity are flush with the inner bottom surface of the opening. The inner bottom surfaces of the arc-shaped receiving cavity and the arc-shaped extrusion cavity penetrate each other to the inner top surface of the outer annular groove.

[0009] Preferably, the top of the annular sealing plate is fixed with two arc-shaped push plates, both of which are slidably and sealingly disposed inside the arc-shaped storage cavity. A crescent groove is provided on the inner side of the arc-shaped push plate near one edge, and the crescent groove is located on the filter port side. The inner wall of the arc-shaped push plate is in contact with the inner wall of the arc-shaped storage cavity.

[0010] Preferably, the sensing device includes a floating ring, and an annular groove is formed between the inner walls of the dissolving cylinder near the bottom edge. The floating ring is slidably disposed between the inner walls of the annular groove. A light strip is provided on the outer surface of the dissolving cylinder near the top. Magnetic switches are embedded on both outer surfaces of the dissolving cylinder, and the two magnetic switches are electrically connected to the light strip.

[0011] Preferably, arc-shaped magnetic strips are embedded on both outer surfaces of the floating ring, the arc-shaped magnetic strips are located above the magnetic control switch, and arc-shaped openings are opened on the top of the conduit near both sides. The bottom of the two arc-shaped openings extends to the bottom of the filter port, the filter port and the arc-shaped openings are interconnected, and arc-shaped sealing plates are slidably sealed between the inner walls of the two arc-shaped openings.

[0012] Preferably, each of the two support plates has a storage opening at its top. One end of each storage opening extends into the arc-shaped opening, and the other end extends into the annular groove. A bending rod is provided inside each of the two storage openings. One end of each bending rod is fixed to the arc-shaped sealing plate, and the other end is fixed to the bottom of the floating ring.

[0013] Preferably, the sewage discharge assembly includes two bent flow channels formed inside the annular sealing plate. One end of each of the two bent flow channels extends to the top of the annular sealing plate and is located at the bottom of the crescent groove. The other end of each of the two bent flow channels extends to the outer surface of the annular sealing plate. The dissolving cylinder has two buffer chambers inside. The bottom surface of each of the two buffer chambers is inclined. One end of each of the two buffer chambers extends into the inner annular groove. Two sewage discharge pipes connected to the buffer chambers are fixed at the bottom of the dissolving cylinder. Air outlets extending to the top of the buffer chambers are formed on both outer surfaces of the dissolving cylinder.

[0014] The present invention also provides a method for preparing powder coatings, which is applied to a powder coating preparation apparatus. The method for preparing powder coatings includes the following steps: Step S1: Place a solution that can absorb easily soluble toxic substances inside the dissolving cylinder, and then transport the waste gas generated during the production of powder coatings into the dissolving cylinder through the air inlet pipe. When the waste gas enters the dissolving cylinder, it is refined through the dispersion port, causing it to generate tiny bubbles that float upwards from the bottom of the dissolving cylinder. During the floating process, the solution inside the cylinder absorbs the dust and easily soluble toxic substances inside the bubbles. Step S2: When the adjustment component is working, if it is necessary to release the solution inside the dissolving cylinder, simply rotate the adjustment sleeve to make the arc-shaped push plate slide completely into the arc-shaped receiving cavity. At this time, the crescent groove end of the arc-shaped push plate is located on the filter port side. The solution inside the dissolving cylinder can then be filtered through the filter port and discharged from the conduit. During the discharge process, when the liquid level is low, the sensing device will also be triggered to prevent the waste gas from being unable to be purified due to the low liquid level. Step S3: When the sensing device is working, when the liquid level inside the dissolving cylinder is low, it will cause the float ring to slide downwards, causing the arc-shaped magnetic strip to slide to the side of the magnetic control switch, thereby causing the light strip to flash to alarm people, indicating that the liquid level inside the dissolving cylinder has reached the lowest point. Step S4: When the sewage discharge component is working, during the process of sealing the filter port, rotating the adjusting sleeve will cause the crescent-shaped end of the arc-shaped push plate to slide into the arc-shaped extrusion chamber. During the sliding process, the dirt attached to the outer surface of the filter port is scraped off through the inner side of the crescent-shaped groove and collected inside the crescent-shaped groove. When the crescent-shaped end of the arc-shaped push plate enters the arc-shaped extrusion chamber, the arc-shaped extrusion chamber is sealed by the sealing action of the end of the arc-shaped push plate. At this time, one end of the bent flow channel slides to the position opposite to the side of the buffer chamber. When the crescent-shaped end of the arc-shaped push plate slides into the arc-shaped extrusion chamber, it will squeeze the solution inside the arc-shaped extrusion chamber from the inside to the bent flow channel, so that it is discharged into the buffer chamber along with the dirt, thereby discharging the dirt collected inside the crescent-shaped groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, a sensing device inside the dissolving cylinder senses the liquid level inside the dissolving cylinder to prevent the liquid level from being too low to purify the incoming gas. An adjusting component can control the opening and closing of the filter port, facilitating the replacement of the solution inside the dissolving cylinder. At the same time, when the adjusting component is working, it also drives the sewage discharge component to work, clean the dirt on the filter port, and discharge the cleaned dirt. 2. In this invention, when the adjustment component is working, the adjustment sleeve is rotated so that the arc-shaped push plate slides completely into the arc-shaped receiving cavity. At this time, the crescent groove end of the arc-shaped push plate is located on the filter port side. At this time, the solution inside the dissolving cylinder can be filtered through the filter port and discharged from the conduit. During the discharge process, when the liquid level is low, the sensing device will also be triggered to work to prevent the waste gas from being unable to be purified due to the low liquid level. 3. In this invention, when the sensing device is working, when the liquid level inside the dissolving cylinder is low, it will cause the float ring to slide downwards, causing the arc-shaped magnetic strip to slide to the side of the magnetic control switch, thereby causing the light strip to flash to alarm people, indicating that the liquid level inside the dissolving cylinder has reached the lowest point. 4. In this invention, when the sewage discharge component is working, by rotating the adjusting sleeve, the crescent-shaped end of the arc-shaped push plate slides into the arc-shaped extrusion chamber. During the sliding process, the dirt attached to the outer surface of the filter port is scraped off through the inner side of the crescent-shaped groove and collected inside the crescent-shaped groove. When the crescent-shaped end of the arc-shaped push plate enters the arc-shaped extrusion chamber, it will close the arc-shaped extrusion chamber. At this time, one end of the bent flow channel slides to the position that is connected to the side of the buffer chamber. When the crescent-shaped end of the arc-shaped push plate slides into the arc-shaped extrusion chamber, it will squeeze the solution inside the arc-shaped extrusion chamber from the inside to the bent flow channel, so that it is discharged into the buffer chamber along with the dirt, thereby discharging the dirt collected inside the crescent-shaped groove. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural diagram of a powder coating preparation apparatus proposed in this invention; Figure 2 A bottom-view three-dimensional structural diagram of a powder coating preparation apparatus proposed in this invention; Figure 3 This invention provides a cross-sectional perspective view of a powder coating preparation apparatus. Figure 4 This is a side cross-sectional perspective view of a powder coating preparation apparatus proposed in this invention. Figure 5 This is a cross-sectional perspective view of another side of the powder coating preparation apparatus proposed in this invention. Figure 6 This is a partial cross-sectional three-dimensional structural schematic diagram of a powder coating preparation apparatus proposed in this invention; Figure 7 This invention provides a cross-sectional three-dimensional structural schematic diagram of a powder coating preparation apparatus. Figure 8 For the present invention Figure 6 A magnified view of a portion of point A in the middle; Figure 9 For the present invention Figure 5 A magnified view of a portion of point B in the middle; Figure 10For the present invention Figure 7 A magnified view of a portion of point C.

[0017] In the diagram: 1. Dissolving cylinder; 2. Grid cover; 3. LED strip; 4. Air inlet pipe; 5. Magnetic control switch; 6. Air outlet; 7. Conduit; 8. Drain pipe; 9. Adjusting sleeve; 10. Dispersion port; 11. Annular groove; 12. Floating ring; 13. Support plate; 14. Collection port; 15. Bending rod; 16. Cylindrical opening; 17. Inner annular groove; 18. Annular sealing plate; 19. Buffer chamber; 20. Arc-shaped magnetic strip; 21. Arc-shaped opening; 22. Arc-shaped sealing plate; 23. Filter port; 24. Arc-shaped collection chamber; 25. Opening; 26. Arc-shaped push plate; 27. Crescent groove; 28. Outer annular groove; 29. ​​Arc-shaped extrusion chamber; 30. Bending flow channel. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-10 The present invention provides a technical solution: a powder coating preparation device, including a dissolving cylinder 1, a grid cover 2 provided between the top and bottom of the dissolving cylinder 1, a cylindrical opening 16 extending to the bottom of the inner bottom surface of the dissolving cylinder 1, a conduit 7 provided inside the cylindrical opening 16, the top of the conduit 7 being closed, support plates 13 connected to the conduit 7 being fixed on both sides of the inner wall of the cylindrical opening 16, a sensing device provided between the inner wall of the dissolving cylinder 1 and the outer surface of the conduit 7, an adjustment component provided on the outer surface of the conduit 7, and a sewage discharge component provided on the dissolving cylinder 1; Both sides of the outer surface of the dissolving cylinder 1 are fixed with air inlet pipes 4. The bottom surface of the dissolving cylinder 1 is provided with multiple dispersion ports 10 at equal intervals at one end of the air inlet pipe 4. One end of each dispersion port 10 penetrates into the interior of the air inlet pipe 4.

[0020] The effect achieved is as follows: a solution that can absorb easily soluble toxic substances is placed inside the dissolving cylinder 1. Then, the waste gas generated during the production of powder coatings is transported into the dissolving cylinder 1 through the air inlet pipe 4. When the waste gas enters the dissolving cylinder 1, it is refined through the dispersion port 10, causing it to generate tiny bubbles that float upwards from the bottom of the dissolving cylinder 1. During the floating process, the solution inside the cylinder absorbs the dust and easily soluble toxic substances within the bubbles. Inside the dissolving cylinder 1, a sensing device senses the liquid level inside the dissolving cylinder 1 to prevent the liquid level from being too low to purify the incoming gas. The opening and closing of the filter port 23 can be controlled by the adjustment component, which facilitates the replacement of the solution inside the dissolving cylinder 1. At the same time, when the adjustment component is working, it will also drive the sewage discharge component to work, clean the stains on the filter port 23, and discharge the cleaned stains.

[0021] like Figure 2 , Figure 3 , Figure 7 and Figure 10 As shown, the adjustment assembly includes an annular sealing plate 18, an inner annular groove 17 formed between the inner walls of the cylindrical opening 16, and an outer annular groove 28 formed on the outer surface of the conduit 7. The outer side of the annular sealing plate 18 is slidably sealed and engaged inside the inner annular groove 17, and the inner side of the annular sealing plate 18 is slidably sealed and engaged inside the outer annular groove 28. Openings 25 are formed on both outer surfaces of the conduit 7 above the annular sealing plate 18. Multiple filter ports 23 are equidistantly formed on the inner bottom surface of each of the two openings 25, and each filter port 23 extends into the conduit 7. An adjustment sleeve 9 is rotatably engaged on the outer surface of the conduit 7, and the top of the adjustment sleeve 9 is fixed to the bottom of the annular sealing plate 18. An arc-shaped receiving cavity 24 extending into the side wall of the conduit 7 is formed on one side of the inner wall of each of the two openings 25. The arc-shaped receiving cavity 24 is located... On one side of the filter port 23, and on the other side of the inner wall of the two openings 25, there are arc-shaped extrusion cavities 29 extending into the inner wall of the guide tube 7. The arc-shaped extrusion cavities 29 are located on the other side of the filter port 23. The inner walls of the arc-shaped receiving cavity 24 and the arc-shaped extrusion cavity 29 are flush with the inner bottom surface of the opening 25. The inner bottom surfaces of the arc-shaped receiving cavity 24 and the arc-shaped extrusion cavity 29 are interpenetrating with the inner top surface of the outer ring groove 28. Two arc-shaped push plates 26 are fixed to the top of the annular sealing plate 18. The two arc-shaped push plates 26 are slidably sealed inside the arc-shaped receiving cavity 24. A crescent groove 27 is provided on the inner side of the arc-shaped push plate 26 near one edge. The crescent groove 27 is located on one side of the filter port 23. The inner wall of the arc-shaped push plate 26 is in contact with the inner wall of the arc-shaped receiving cavity 24.

[0022] The effect achieved is as follows: In the initial state of purifying the exhaust gas, the crescent groove 27 end of the arc-shaped push plate 26 is slidably sealed and inserted into the arc-shaped extrusion chamber 29, while the other end is slidably sealed and located in the arc-shaped receiving chamber 24. At this time, the other end of the bent flow channel 30 is connected to one side of the buffer chamber 19. At this time, the filter port 23 is sealed by the inner side of the arc-shaped push plate 26, and the solution inside the dissolving cylinder 1 cannot be discharged through the filter port 23. When it is necessary to release the solution inside the dissolving cylinder 1, it is only necessary to rotate the adjusting sleeve 9 so that the arc-shaped push plate 26 can be completely slid into the arc-shaped receiving chamber 24. At this time, the crescent groove 27 end of the arc-shaped push plate 26 is located on one side of the filter port 23, and the solution inside the dissolving cylinder 1 can be filtered through the filter port 23 and discharged from the conduit 7. During the discharge process, when the liquid level is low, the sensing device will be triggered to prevent the exhaust gas from being unable to be purified due to the low liquid level. After the sensing device is triggered, the light strip 3 will flash. When people see the light strip 3 flashing, it indicates that the solution inside the dissolving cylinder 1 has been discharged to the lowest liquid level.

[0023] like Figure 3 , Figure 6 and Figure 8 As shown, the sensing device includes a float ring 12. An annular groove 11 is formed between the inner walls of the dissolving cylinder 1 near the bottom edge. The float ring 12 is slidably disposed between the inner walls of the annular groove 11. A light strip 3 is provided near the top of the outer surface of the dissolving cylinder 1. Magnetic switches 5 are embedded on both outer surfaces of the dissolving cylinder 1, and the two magnetic switches 5 are electrically connected to the light strip 3. Arc-shaped magnetic strips 20 are embedded on both outer surfaces of the float ring 12, located above the magnetic switches 5. Arc-shaped openings 21 are formed near both sides of the top of the conduit 7. The bottom of each arc-shaped opening 21 extends to the bottom of the filter opening 23. The filter opening 23 and the arc-shaped opening 21 are interconnected. Arc-shaped sealing plates 22 are slidably sealed between the inner walls of the two arc-shaped openings 21. The top of each of the two support plates 13 is provided with a receiving opening 14. One end of each receiving opening 14 extends into the interior of the arc-shaped opening 21, and the other end extends into the annular groove 11. Bending rods 15 are provided inside each of the two receiving openings 14. One end of each bending rod 15 is fixed to the arc-shaped sealing plate 22, and the other end is fixed to the bottom of the floating ring 12.

[0024] The effect is that when the liquid level inside the dissolving cylinder 1 is low, it will cause the float ring 12 to slide downwards, causing the arc-shaped magnetic strip 20 to slide to the side of the magnetic control switch 5, thereby causing the light strip 3 to flash to alarm people, indicating that the liquid level inside the dissolving cylinder 1 has reached the lowest point. When the float ring 12 slides downwards, it will also cause the arc-shaped sealing plate 22 to slide downwards towards the arc-shaped opening 21 through the bending rod 15, until the bottom of the arc-shaped sealing plate 22 slides below the filter port 23. At this time, the filter port 23 can be sealed to prevent the liquid level inside the dissolving cylinder 1 from being too low when the liquid is discharged, which would prevent the waste gas entering the dissolving cylinder 1 from being purified.

[0025] like Figure 2, Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 10 As shown, the sewage discharge assembly includes two bent flow channels 30 opened inside the annular sealing plate 18. One end of each of the two bent flow channels 30 extends to the top of the annular sealing plate 18 and is located at the bottom of the crescent groove 27. The other end of each of the two bent flow channels 30 extends to the outer surface of the annular sealing plate 18. Two buffer chambers 19 are opened inside the dissolving cylinder 1. The bottom surface of each of the two buffer chambers 19 is inclined. One end of each of the two buffer chambers 19 extends into the inner annular groove 17. Two sewage discharge pipes 8 are fixed at the bottom of the dissolving cylinder 1 and connect to the inside of the buffer chambers 19. Air outlets 6 are opened on both outer surfaces of the dissolving cylinder 1 and extend to the top of the buffer chambers 19.

[0026] The effect achieved is that when the filter port 23 is in the filtering state, one end of the bent flow channel 30 is misaligned with one side of the buffer chamber 19, and the bent flow channel 30 is not connected to the buffer chamber 19. During the process of sealing the filter port 23, when the adjusting sleeve 9 is rotated, it will drive the crescent groove 27 end of the arc-shaped push plate 26 to slide into the arc-shaped extrusion chamber 29. During the sliding process, the dirt attached to the outer surface of the filter port 23 is scraped off through the inner side of the crescent groove 27 and collected inside the crescent groove 27. When the crescent groove 27 end of the arc-shaped push plate 26... The moment the solution enters the arc-shaped extrusion chamber 29, it is sealed by the sealing action of the end of the arc-shaped push plate 26. At this time, one end of the bent flow channel 30 slides to a position that is connected to the side of the buffer chamber 19. When the crescent groove 27 end of the arc-shaped push plate 26 slides into the arc-shaped extrusion chamber 29, it will squeeze the solution inside the arc-shaped extrusion chamber 29 from the inside to the bent flow channel 30, so that it is discharged into the buffer chamber 19 along with the dirt, thereby discharging the dirt collected inside the crescent groove 27.

[0027] For example, in one embodiment, the present invention also provides a method for preparing a powder coating, applied to the powder coating preparation apparatus described above, comprising the following steps: Step S1: Place a solution that can absorb easily soluble toxic substances inside the dissolving cylinder 1, and then transport the waste gas generated during the production of powder coatings into the dissolving cylinder 1 through the air inlet pipe 4. When the waste gas enters the dissolving cylinder 1, it is refined through the dispersion port 10, causing it to generate small bubbles that float upwards from the bottom of the dissolving cylinder 1. During the floating process of the bubbles, the solution inside the cylinder absorbs the dust and easily soluble toxic substances inside the bubbles. Step S2: When the adjustment component is working, if it is necessary to release the solution inside the dissolving cylinder 1, simply rotate the adjustment sleeve 9 so that the arc-shaped push plate 26 slides completely into the arc-shaped receiving cavity 24. At this time, the crescent groove 27 end of the arc-shaped push plate 26 is located on one side of the filter port 23. At this time, the solution inside the dissolving cylinder 1 can be filtered through the filter port 23 and discharged from the conduit 7. During the discharge process, when the liquid level is low, the sensing device will also be triggered to work to prevent the waste gas from being unable to be purified due to the low liquid level. Step S3: When the sensing device is working, when the liquid level inside the dissolving cylinder 1 is low, it will drive the float ring 12 to slide downward, causing the arc-shaped magnetic strip 20 to slide to the side of the magnetic control switch 5, thereby causing the light strip 3 to flash to alarm people, indicating that the liquid level inside the dissolving cylinder 1 has reached the lowest point. Step S4: When the sewage discharge assembly is working, during the process of sealing the filter port 23, rotating the adjusting sleeve 9 will cause the crescent groove 27 end of the arc-shaped push plate 26 to slide into the arc-shaped extrusion chamber 29. During the sliding process, the dirt attached to the outer surface of the filter port 23 is scraped off through the inner side of the crescent groove 27 and collected inside the crescent groove 27. When the crescent groove 27 end of the arc-shaped push plate 26 enters the arc-shaped extrusion chamber 29, the arc-shaped extrusion chamber 29 is sealed by the sealing action of the end of the arc-shaped push plate 26. At this time, one end of the bent flow channel 30 slides to the position opposite to the side of the buffer chamber 19. When the crescent groove 27 end of the arc-shaped push plate 26 slides into the arc-shaped extrusion chamber 29, it will squeeze the solution inside the arc-shaped extrusion chamber 29 from the inside to the bent flow channel 30, so that it is discharged into the buffer chamber 19 along with the dirt, thereby discharging the dirt collected inside the crescent groove 27.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An apparatus for preparing powder coatings, characterized in that, The dissolving cylinder (1) is provided with a grid cover (2) between the top and bottom of the dissolving cylinder (1). A cylindrical opening (16) extending to the bottom is provided on the bottom surface of the dissolving cylinder (1). A conduit (7) is provided inside the cylindrical opening (16). The top of the conduit (7) is closed. Support plates (13) connected to the conduit (7) are fixed on both sides of the inner wall of the cylindrical opening (16). A sensing device is provided between the inner wall of the dissolving cylinder (1) and the outer surface of the conduit (7). An adjustment component is provided on the outer surface of the conduit (7). A sewage discharge component is provided on the dissolving cylinder (1). Both sides of the dissolving cylinder (1) are fixed with air inlet pipes (4). The bottom surface of the dissolving cylinder (1) is provided with multiple dispersion ports (10) at equal intervals at one end of the air inlet pipe (4). One end of each dispersion port (10) penetrates into the air inlet pipe (4).

2. The powder coating preparation apparatus according to claim 1, characterized in that: The adjustment assembly includes an annular sealing plate (18), an inner annular groove (17) is formed between the inner walls of the cylindrical opening (16), an outer annular groove (28) is formed on the outer surface of the conduit (7), the outer side of the annular sealing plate (18) is slidably sealed and engaged inside the inner annular groove (17), and the inner side of the annular sealing plate (18) is slidably sealed and engaged inside the outer annular groove (28).

3. The powder coating preparation apparatus according to claim 2, characterized in that: Both sides of the outer surface of the conduit (7) are provided with openings (25) above the annular sealing plate (18). Multiple filter ports (23) are provided at equal intervals on the inner bottom surface of the two openings (25). The multiple filter ports (23) penetrate into the conduit (7). An adjusting sleeve (9) is rotatably engaged on the outer surface of the conduit (7). The top of the adjusting sleeve (9) is fixed to the bottom of the annular sealing plate (18).

4. The powder coating preparation apparatus according to claim 3, characterized in that: Both of the openings (25) have an arc-shaped receiving cavity (24) extending into the side wall of the conduit (7) on one side of the inner wall. The arc-shaped receiving cavity (24) is located on one side of the filter port (23). Both of the openings (25) have an arc-shaped extrusion cavity (29) extending into the side wall of the conduit (7) on the other side of the inner wall. The arc-shaped extrusion cavity (29) is located on the other side of the filter port (23). The inner walls of the arc-shaped receiving cavity (24) and the arc-shaped extrusion cavity (29) are flush with the inner bottom surface of the opening (25). The inner bottom surfaces of the arc-shaped receiving cavity (24) and the arc-shaped extrusion cavity (29) penetrate the inner top surface of the outer ring groove (28).

5. The powder coating preparation apparatus according to claim 4, characterized in that: The top of the annular sealing plate (18) is fixed with two arc-shaped push plates (26). Both arc-shaped push plates (26) are slidably sealed inside the arc-shaped storage cavity (24). A crescent groove (27) is provided on the inner side of the arc-shaped push plate (26) near one end edge. The crescent groove (27) is located on one side of the filter port (23). The inner wall of the arc-shaped push plate (26) is in contact with the inner wall of the arc-shaped storage cavity (24).

6. The powder coating preparation apparatus according to claim 5, characterized in that: The sensing device includes a float ring (12), and an annular groove (11) is provided between the inner walls of the dissolving cylinder (1) near the bottom edge. The float ring (12) is slidably disposed between the inner walls of the annular groove (11). A light strip (3) is provided on the outer surface of the dissolving cylinder (1) near the top. Magnetic switches (5) are embedded on both outer surfaces of the dissolving cylinder (1). The two magnetic switches (5) are electrically connected to the light strip (3).

7. The powder coating preparation apparatus according to claim 6, characterized in that: The outer surfaces of both sides of the floating ring (12) are embedded with arc-shaped magnetic strips (20). The arc-shaped magnetic strips (20) are located above the magnetic control switch (5). The top of the guide tube (7) is provided with arc-shaped openings (21) near both sides. The bottom of the two arc-shaped openings (21) extends to the bottom of the filter port (23). The filter port (23) and the arc-shaped openings (21) are interconnected. Arc-shaped sealing plates (22) are slidably sealed between the inner walls of the two arc-shaped openings (21).

8. The powder coating preparation apparatus according to claim 7, characterized in that: The top of each of the two support plates (13) is provided with a storage opening (14). One end of each of the two storage openings (14) passes through the interior of the arc-shaped opening (21), and the other end passes through the annular groove (11). A bending rod (15) is provided inside each of the two storage openings (14). One end of each of the two bending rods (15) is fixed on the arc-shaped sealing plate (22), and the other end is fixed on the bottom of the floating ring (12).

9. The powder coating preparation apparatus according to claim 8, characterized in that: The sewage discharge assembly includes two bent flow channels (30) opened inside the annular sealing plate (18). One end of each of the two bent flow channels (30) extends to the top of the annular sealing plate (18) and is located at the bottom of the crescent groove (27). The other end of each of the two bent flow channels (30) extends to the outer surface of the annular sealing plate (18). The dissolving cylinder (1) has two buffer chambers (19) inside. The bottom surface of each of the two buffer chambers (19) is inclined. One end of each of the two buffer chambers (19) extends into the inner annular groove (17). The bottom of the dissolving cylinder (1) has two sewage discharge pipes (8) connected to the inside of the buffer chambers (19). The outer surfaces of both sides of the dissolving cylinder (1) are provided with air outlets (6) extending to the top of the buffer chambers (19).

10. A method for preparing a powder coating, wherein the method is applied to a powder coating preparation apparatus as described in any one of claims 1-9, characterized in that, Includes the following steps: Step S1: Place a solution that can absorb easily soluble toxic substances inside the dissolving cylinder (1), and then transport the waste gas generated during the production of powder coatings to the dissolving cylinder (1) through the air inlet pipe (4). When the waste gas enters the dissolving cylinder (1), it is refined through the dispersion port (10) to generate small bubbles that float upward from the bottom of the dissolving cylinder (1). During the floating process of the bubbles, the solution inside the cylinder absorbs the dust and easily soluble toxic substances in the bubbles. Step S2: When the adjustment component is working, if it is necessary to release the solution inside the dissolving cylinder (1), simply rotate the adjustment sleeve (9) to make the arc-shaped push plate (26) slide completely into the arc-shaped receiving cavity (24). At this time, the crescent groove (27) end of the arc-shaped push plate (26) is located on the side of the filter port (23). At this time, the solution inside the dissolving cylinder (1) can be filtered through the filter port (23) and discharged from the conduit (7). During the discharge process, when the liquid level is low, the sensing device will also be triggered to work to prevent the waste gas from being unable to be purified due to the low liquid level. Step S3: When the sensing device is working, when the liquid level inside the dissolving cylinder (1) is low, it will drive the float ring (12) to slide down, causing the arc-shaped magnetic strip (20) to slide to the side of the magnetic control switch (5), thereby causing the light strip (3) to flash to alarm people, indicating that the liquid level inside the dissolving cylinder (1) has reached the lowest point. Step S4: When the sewage discharge assembly is working, during the process of closing the filter port (23), rotating the adjusting sleeve (9) will cause the crescent groove (27) end of the arc-shaped push plate (26) to slide into the arc-shaped extrusion cavity (29). During the sliding process, the dirt attached to the outer surface of the filter port (23) is scraped off through the inner side of the crescent groove (27) and collected inside the crescent groove (27). When the crescent groove (27) end of the arc-shaped push plate (26) enters the arc-shaped extrusion cavity (29), at the moment when the arc-shaped push plate (26) (27) enters the arc-shaped extrusion cavity (29), the dirt attached to the outer surface of the filter port (23) is scraped off through the inner side of the crescent groove (27) and collected inside the crescent groove (27). 6) The sealing and fitting action at the end closes the arc-shaped extrusion cavity (29), and at this time, one end of the bent flow channel (30) slides to the point where it is connected to the side of the buffer cavity (19). When the crescent groove (27) end of the arc-shaped push plate (26) slides into the arc-shaped extrusion cavity (29), it will squeeze the solution inside the arc-shaped extrusion cavity (29) from the inside to the bent flow channel (30), so that it is discharged into the buffer cavity (19) along with the stains, thereby discharging the stains collected inside the crescent groove (27).

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