Coarse powder regrinding device for powder coating production

Abstract

The utility model provides a coarse powder back-grinding device for powder coating production, which relates to the technical field of coating production processing equipment and comprises a rack, a barrel is arranged on the outer surface of the rack, a feeding pipe is arranged on one side of the top end of the barrel, a plurality of air inlet grooves are formed in the outer surface of the barrel, and the air inlet grooves are communicated with the barrel. A filtering device capable of filtering air entering the cylinder is arranged in the air inlet groove, the filtering device comprises a plurality of fan-shaped plates, one side of each fan-shaped plate is fixedly connected with a push plate, a plurality of filtering holes are formed in the outer surface of each fan-shaped plate, and the sliding grooves and the clamping grooves are circumferentially distributed in the cylinder. By arranging the filtering device, air entering the cylinder from the air inlet groove can be filtered through the filtering holes in the surface of the fan-shaped plate, dust particles in the air are blocked, and the situation that the air carries the dust particles to enter the cylinder, and the purity of powder and the back-grinding precision of the device are affected is avoided as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of coating production and processing equipment, in particular to a coarse powder regrinding device for powder coating production. Background Art

[0002] Powder coating is a solid powdered synthetic resin coating composed of solid resin, pigments, fillers and additives. Thermosetting powder coating is generally used for coating automobile interiors and cabs. The paint film formed by this type of coating has appearance, various mechanical properties and corrosion resistance that can meet the requirements of automobile finishing.

[0003] When powder coating is produced, the powder raw materials are put into the ultra-fine grinding mill for grinding. During the grinding process, the fine powder inside the grinding mill is extracted by the top negative pressure fan, and the unground powder will fall into the grinding chamber for re-grinding. When the air is drawn into the machine body through the negative pressure fan, the dust and debris carried in the air enter the machine body and mix with the powder, which will affect the overall quality of the powder. Moreover, the increase in mass after the dust and powder are mixed will affect the re-grinding accuracy inside the machine body. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that when air is drawn into the machine body by a negative pressure fan, dust and debris carried in the air enter the machine body and mix with the powder, which will affect the overall quality of the powder, and the increase in mass after the dust and powder are mixed will affect the re-grinding accuracy inside the machine body. A coarse powder re-grinding device for powder coating production is proposed to solve the problem that when air is drawn into the machine body by a negative pressure fan, dust and debris carried in the air enter the machine body and mix with the powder, which will affect the overall quality of the powder, and the increase in mass after the dust and powder are mixed will affect the re-grinding accuracy inside the machine body.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a coarse powder regrinding device for powder coating production, comprising a frame, a cylinder is provided on the outer surface of the frame, a feed pipe is provided on one side of the top end of the cylinder, a discharge pipe is provided on the top end of the cylinder, a fan pipe is fixedly connected to one side of the discharge pipe, a plurality of air inlet grooves are provided on the outer surface of the cylinder, a filter device for filtering the air entering the cylinder is provided inside the air inlet groove, and a cleaning device for cleaning some components of the filter device is provided inside the cylinder.

[0006] The effect achieved by the above components is: when finely grinding the powder of the powder coating, the powder delivery pipe is connected to the feed pipe on one side of the cylinder, the powder output pipe is connected to the discharge pipe at the top of the cylinder, and the pipe of the negative pressure fan is connected to the fan pipe at the top of the discharge pipe, so that the powder enters the interior of the cylinder through the feed pipe, and the motor at the bottom of the cylinder drives the grinding disc inside the cylinder to rotate to finely grind the powder, and the negative pressure fan connected to the fan pipe at the top of the cylinder is operated to draw air into the cylinder through the air inlet slot and move upward. The fine powder will follow the air through the discharge pipe and enter the powder output pipe for output. The unground powder will fall into the cylinder again for re-grinding due to its weight and the obstruction of the fine filter at the top of the cylinder.

[0007] Preferably, the filtering device includes a plurality of fan-shaped plates, a push plate is fixedly connected to one side of the fan-shaped plate, a plurality of filter holes are provided on the outer surface of the fan-shaped plate, and a plurality of slide grooves and card grooves are respectively provided on the side of the inner wall of the cylinder close to the air inlet groove. The slide grooves and card grooves are distributed in a circular shape inside the cylinder, and the fan-shaped plate slides on the inner wall of the slide groove.

[0008] The effect achieved by the above components is: before the grinding device is operated, the push plate is pushed at each air inlet slot to control the fan plate to slide on the inner wall of the slide slot, and one end of the fan plate is inserted into the slot to close the air inlet slot. When the negative pressure fan draws air into the cylinder, the air entering the cylinder from the air inlet slot can be filtered through the filter holes on the surface of the fan plate, and the dust particles in the air can be blocked to avoid the air carrying dust particles into the cylinder as much as possible, which will affect the purity of the powder and the re-grinding accuracy of the device. When the device is not in use, pushing the fan plate to open the air inlet slot can facilitate the cleaning of powder dropped from the air inlet slot.

[0009] Preferably, grooves are provided on both sides of the outer surface of the push plate, and the inner walls of the two grooves are provided with a plurality of protrusions.

[0010] The effect achieved by the above components is that pinching the protrusions of the two grooves on the outer surface of the push plate can more conveniently push the push plate to control the movement of the fan-shaped plate to close or open the air inlet slot.

[0011] Preferably, a plurality of positioning components are provided on the circumference of the outer surface of the cylinder, and the positioning components include a rectangular rod, the bottom end of the rectangular rod is fixedly connected to the outer surface of the cylinder, the outer surface of the rectangular rod is rotatably connected to a rotating rod, one end of the rotating rod is fixedly connected to a protrusion, the top side of the rectangular rod is fixedly connected to a pressure rod, the top of the rotating rod is provided with a spring, the upper and lower ends of the spring are respectively fixedly connected to the top side of the rotating rod and the bottom side of the pressure rod, and one side of the push plate is fixedly connected to an L-shaped rod.

[0012] The effect achieved by the above components is: when the push plate is pushed to control the movement of the fan-shaped plate to close the air inlet slot, one end of the L-shaped rod on one side of the push plate will contact the protrusion at the bottom end of the rotating rod, and then the push plate continues to move the L-shaped rod will push the protrusion to make the rotating rod rotate upward on the outer surface of the rectangular rod and compress the spring. When one end of the L-shaped rod passes through the protrusion and is located between the rectangular rod and the protrusion, the spring will return to its original shape and push the rotating rod back to its original position, and the position of the L-shaped rod and the fan plate will be further fixed by the protrusion.

[0013] Preferably, the edge of the L-shaped rod away from the push plate is arc-shaped, and the edge of one side of the bottom end of the protrusion is also arc-shaped.

[0014] The effect achieved by the above components is: by setting the edge of the L-shaped rod away from the push plate and the bottom end of the protrusion to be arc-shaped, the L-shaped rod is not easily stuck on one side of the protrusion when contacting the protrusion, and it is easier to push the protrusion to rotate the rotating rod upward.

[0015] Preferably, the cleaning device includes a base, the top of the base is fixedly connected to a brush rod, a plurality of bristles are provided on one side of the brush rod, two through holes are provided on the outer surface of the base, bolts are slidably inserted into the inner walls of the through holes, and a plurality of threaded holes are provided at the bottom end of the inner wall of the cylinder, and the outer surface of the bolt is threadedly connected to the inner wall of the threaded hole.

[0016] The effect achieved by the above components is: after pushing the fan-shaped plate to open the air inlet slot, the base can be fitted onto the bottom end of the inner wall of the cylinder, and the two through holes on the outer surface of the base can be aligned with the positions of the two threaded holes. Then, a bolt can be inserted through the through hole into the threaded hole, and the bolt can be turned to make the bolt threadedly connected to the inner wall of the threaded hole to fix the base and the brush rod inside the cylinder. When the fan-shaped plate is pushed into the slide groove or pulled out from the slide groove, the inner side of the fan-shaped plate will move to one side of the brush rod, and the filter holes on the surface of the fan-shaped plate will be cleaned by the bristles on one side of the brush rod, and the dust particles adhering to the filter holes will be swept out for easy cleaning.

[0017] Preferably, two elastic ropes are fixedly connected to the outer surface of the base, and one end of the two elastic ropes away from the base is fixedly connected to one side of the top end of the bolt.

[0018] The effect achieved by the above components is that the bolt can be fixed to the outside of the base by arranging the elastic rope, which makes it easy to take the bolt when installing the brush rod and prevents the bolt from falling and being lost.

[0019] Compared with the prior art, the advantages and positive effects of the present invention are:

[0020] In the utility model, by setting a filtering device, the air entering the cylinder from the air inlet slot can be filtered through the filter holes on the surface of the fan-shaped plate, and the dust particles in the air can be blocked, so as to avoid the air carrying dust particles into the cylinder as much as possible, which will affect the purity of the powder and the re-grinding accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the partial cross-section of the cylinder of the utility model;

[0023] Figure 3 For this utility model Figure 2 A schematic diagram of a partially enlarged three-dimensional structure at point A;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the rectangular rod of the utility model;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the brush rod of the utility model.

[0026] Legend: 1. Frame; 2. Filter device; 3. Cleaning device; 4. Cylinder; 5. Feed pipe; 6. Discharge pipe; 7. Fan pipe; 8. Air inlet slot; 21. Slide slot; 22. Fan plate; 23. Filter hole; 24. Slot; 25. Push plate; 26. Groove; 27. Positioning assembly; 271. Rectangular rod; 272. Rotating rod; 273. Bump; 274. Spring; 275. Pressure rod; 276. L-shaped rod; 31. Threaded hole; 32. Base; 33. Brush rod; 34. Through hole; 35. Bolt; 36. Elastic rope. DETAILED DESCRIPTION

[0027] Example 1, as Figure 1-3As shown, a coarse powder re-grinding device for powder coating production includes a frame 1, a cylinder 4 is provided on the outer surface of the frame 1, a feed pipe 5 is provided on one side of the top of the cylinder 4, a discharge pipe 6 is provided on the top of the cylinder 4, a fan pipe 7 is fixedly connected to one side of the discharge pipe 6, a plurality of air inlet slots 8 are provided on the outer surface of the cylinder 4, a filter device 2 for filtering the air entering the cylinder 4 is provided inside the air inlet slot 8, a cleaning device 3 for cleaning some components of the filter device 2 is provided inside the cylinder 4, and when finely grinding the powder of the powder coating, the powder conveying pipeline is connected to the feed pipe 5 on one side of the cylinder 4. Next, connect the powder output pipe to the discharge pipe 6 at the top of the cylinder 4, and connect the pipe of the negative pressure fan to the fan pipe 7 at the top of the discharge pipe 6, so that the powder enters the interior of the cylinder 4 through the feed pipe 5, and operates the motor at the bottom of the cylinder 4 to drive the grinding disc inside the cylinder 4 to rotate and grind the powder finely, and operates the negative pressure fan connected to the fan pipe 7 at the top of the cylinder 4 to draw air into the cylinder 4 through the air inlet slot 8 and move it upward. The fine powder will follow the air through the discharge pipe 6 and enter the powder output pipe for output. The unground powder will fall into the cylinder 4 again for re-grinding due to its weight and the obstruction of the fine filter screen on the top of the cylinder 4.

[0028] Reference Figure 2-4 As shown, in this embodiment: the filtering device 2 includes a plurality of fan-shaped plates 22, one side of the fan-shaped plate 22 is fixedly connected to a push plate 25, the outer surface of the fan-shaped plate 22 is provided with a plurality of filter holes 23, the inner wall of the cylinder 4 is close to the side of the air inlet groove 8 and is respectively provided with a plurality of chutes 21 and card slots 24, the chutes 21 and card slots 24 are circumferentially distributed inside the cylinder 4, the fan-shaped plate 22 slides on the inner wall of the chute 21, before the grinding device is operated, the push plate 25 is pushed at each air inlet groove 8 to control the fan-shaped plate 22 to slide on the inner wall of the chute 21, and the fan One end of the fan-shaped plate 22 is inserted into the slot 24 to close the air inlet slot 8. When the negative pressure fan draws air into the cylinder 1, the air entering the cylinder 4 from the air inlet slot 8 can be filtered through the filter holes 23 on the surface of the fan-shaped plate 22, blocking the dust particles in the air and avoiding as much as possible the air carrying dust particles into the cylinder 4, which affects the purity of the powder and the re-grinding accuracy of the device. When the device is not in use, pushing the fan-shaped plate 22 to open the air inlet slot 8 can facilitate the cleaning of the powder dropped from the air inlet slot 8.

[0029] Reference Figure 2-4The cam 276 is fixedly connected to one side of the push plate 25 to push the push plate 25 to control the movement of the fan plate 22 to close or open the air inlet slot 8. When the air inlet slot 8 is closed, one end of the L-shaped rod 276 on one side of the push plate 25 will contact the protrusion 273 at the bottom end of the rotating rod 272. Then, the push plate 25 continues to move, and the L-shaped rod 276 pushes the protrusion 273 to make the rotating rod 272 rotate upward on the outer surface of the rectangular rod 271 and compress the spring 274. When one end of the L-shaped rod 276 passes the protrusion 273 and is located between the rectangular rod 271 and the protrusion 273, the spring 274 will return to its original shape and push the rotating rod 272 back to its original position. The positions of the L-shaped rod 276 and the fan-shaped plate 22 are further fixed by the protrusion 273. The edge of the L-shaped rod 276 away from the push plate 25 is arc-shaped, and the edge of the bottom end of the protrusion 273 is arc-shaped. By setting the edge of the L-shaped rod 276 away from the push plate 25 and the bottom end of the protrusion 273 to be arc-shaped, the L-shaped rod 276 is not easily stuck on one side of the protrusion 273 when contacting the protrusion 273, and it is easier to push the protrusion 273 to rotate the rotating rod 272 upward.

[0030] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 5As shown, in this embodiment: the cleaning device 3 includes a base 32, the top of the base 32 is fixedly connected to a brush rod 33, one side of the brush rod 33 is provided with a plurality of bristles, the outer surface of the base 32 is provided with two through holes 34, the inner wall of the through hole 34 is slidably inserted with a bolt 35, the bottom end of the inner wall of the cylinder 4 is provided with a plurality of threaded holes 31, the outer surface of the bolt 35 is threadedly connected with the inner wall of the threaded hole 31, after pushing the fan-shaped plate 22 to open the air inlet slot 8, the base 32 can be fitted to the bottom end of the inner wall of the cylinder 4, the two through holes 34 on the outer surface of the base 32 are aligned with the positions of the two threaded holes 31, and then the bolt 35 is passed through the through hole 34 and inserted into the threaded hole 31, and the bolt 35 is rotated to align the bolt 35 with the threaded hole 31 The inner wall threaded connection fixes the base 32 and the brush rod 33 to the inside of the cylinder 4. When the fan-shaped plate 22 is pushed into the slide groove 21 or pulled out from the slide groove 21, the inner side of the fan-shaped plate 22 will move on one side of the brush rod 33, and the bristles on one side of the brush rod 33 will clean the filter holes 23 on the surface of the fan plate 22, and sweep out the dust particles adhering to the filter holes 23 for easy cleaning. Two elastic ropes 36 are fixedly connected to the outer surface of the base 32, and the ends of the two elastic ropes 36 away from the base 32 are fixedly connected to the top side of the bolt 35. By setting the elastic rope 36, the bolt 35 can be fixed to the outside of the base 32, which is convenient for taking the bolt 35 when installing the brush rod 33 and preventing the bolt 35 from falling and being lost.

[0031] Working principle: When using the coarse powder re-grinding device to finely grind the powder of the powder coating, first push the push plate 25 at each air inlet slot 8 at the bottom of the cylinder 4 to control the sector plate 22 to move into the slide 21 to open the air inlet slot 8, and then fit each base 32 to the bottom end of the inner wall of the cylinder 4, align the two through holes 34 on the outer surface of the base 32 with the positions of the two threaded holes 31, use a bolt 35 to pass through the through hole 34 and insert it into the threaded hole 31, turn the bolt 35 to make the bolt 35 threadedly connected to the inner wall of the threaded hole 31 to fix the base 32 and the brush rod 33 inside the cylinder 4, and then push the push plate 25 to control the sector plate 22 The push plate 25 moves the L-shaped rod 276 to push the protrusion 273 so that the rotating rod 272 rotates upward on the outer surface of the rectangular rod 271 and compresses the spring 274. When one end of the L-shaped rod 276 passes through the protrusion 273 and is located between the rectangular rod 271 and the protrusion 273, the spring 274 returns to its original shape and pushes the rotating rod 272 to return to its original position. The position of the L-shaped rod 276 and the sector plate 22 is further fixed by the protrusion 273, and finally the powder is delivered. The feeding pipe is connected to the feeding pipe 5 on one side of the cylinder 4, the powder output pipe is connected to the discharging pipe 6 at the top of the cylinder 4, and the pipe of the negative pressure fan is connected to the fan pipe 7 at the top of the discharging pipe 6, so that the powder enters the interior of the cylinder 4 through the feeding pipe 5, and the motor at the bottom of the cylinder 4 drives the grinding disc inside the cylinder 4 to rotate to grind the powder finely, and the negative pressure fan connected to the fan pipe 7 at the top of the cylinder 4 is operated to draw air into the cylinder 4 through the air inlet slot 8 and move it upward. When the air passes through the fan plate 22, the filter holes 23 on the surface of the fan plate 22 can filter the air entering the cylinder 4 from the air inlet slot 8, removing the air in the air. The dust particles are blocked and the dust particles carried by the air are prevented from entering the interior of the cylinder 4 as much as possible. The fine powder will follow the air through the discharge pipe 6 and enter the powder output pipe for output. The unground powder will fall into the cylinder 4 again due to its weight and the fine filter mesh on the top of the cylinder to be reground. When the device is not in use, the fan-shaped plate 22 can be pushed to move the air inlet slot 8 to open the air inlet slot 8 and clean the air inlet slot 8. When the fan-shaped plate 22 moves, the inner side will move to one side of the brush rod 33, and the bristles on one side of the brush rod 33 will clean the filter holes 23 on the surface of the fan-shaped plate 22, and sweep out the dust particles adhering to the filter holes 23 for easy cleaning.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A coarse powder regrinding device for powder coating production, comprising a frame (1), characterized in that: The outer surface of the frame (1) is provided with a cylinder (4), a feeding pipe (5) is provided on one side of the top end of the cylinder (4), a discharging pipe (6) is provided on the top end of the cylinder (4), and a fan pipe (7) is fixedly connected to one side of the discharging pipe (6). The outer surface of the cylinder (4) is provided with a plurality of air inlet grooves (8), and a filter device (2) capable of filtering the air entering the cylinder (4) is provided inside the air inlet grooves (8). A cleaning device (3) capable of cleaning some components of the filter device (2) is provided inside the cylinder (4).

2. A coarse powder regrinding device for powder coating production according to claim 1, characterized in that: The filtering device (2) comprises a plurality of fan-shaped plates (22), one side of the fan-shaped plates (22) is fixedly connected to a push plate (25), the outer surface of the fan-shaped plates (22) is provided with a plurality of filter holes (23), the inner wall of the cylinder (4) is provided with a plurality of slide grooves (21) and clamping grooves (24) on a side close to the air inlet groove (8), the slide grooves (21) and clamping grooves (24) are distributed in a circular manner inside the cylinder (4), and the fan-shaped plates (22) slide on the inner wall of the slide grooves (21).

3. A coarse powder regrinding device for powder coating production according to claim 2, characterized in that: Grooves (26) are provided on both sides of the outer surface of the push plate (25), and the inner walls of the two grooves (26) are provided with a plurality of protrusions.

4. A coarse powder regrinding device for powder coating production according to claim 3, characterized in that: The outer surface circumference of the cylinder (4) is provided with a plurality of positioning components (27) that can further fix the position of each sector plate (22).

5. A coarse powder regrinding device for powder coating production according to claim 4, characterized in that: The positioning assembly (27) includes a rectangular rod (271), the bottom end of the rectangular rod (271) is fixedly connected to the outer surface of the cylinder (4), the outer surface of the rectangular rod (271) is rotatably connected to a rotating rod (272), one end of the rotating rod (272) is fixedly connected to a protrusion (273), the top side of the rectangular rod (271) is fixedly connected to a pressure rod (275), the top end of the rotating rod (272) is provided with a spring (274), the upper and lower ends of the spring (274) are respectively fixedly connected to the top side of the rotating rod (272) and the bottom side of the pressure rod (275), and one side of the push plate (25) is fixedly connected to an L-shaped rod (276).

6. A coarse powder regrinding device for powder coating production according to claim 5, characterized in that: The edge of the L-shaped rod (276) away from the push plate (25) is arc-shaped, and the edge of one side of the bottom end of the protrusion (273) is also arc-shaped.

7. The coarse powder regrinding device for powder coating production according to claim 2, characterized in that: The cleaning device (3) comprises a base (32), the top end of the base (32) is fixedly connected to a brush rod (33), one side of the brush rod (33) is provided with a plurality of bristles, the outer surface of the base (32) is provided with two through holes (34), the inner walls of the through holes (34) are slidably provided with bolts (35), the bottom end of the inner wall of the cylinder (4) is provided with a plurality of threaded holes (31), the outer surfaces of the bolts (35) are threadedly connected to the inner walls of the threaded holes (31).

8. The coarse powder regrinding device for powder coating production according to claim 7, characterized in that: Two elastic ropes (36) are fixedly connected to the outer surface of the base (32), and one end of the two elastic ropes (36) away from the base (32) is fixedly connected to one side of the top end of the bolt (35).

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