A grinding device for producing environmentally friendly powder coatings

Abstract

The utility model belongs to the technical field of powder coating production, specifically a grinding device for environmentally friendly powder coating production, including a conveying frame, wherein the conveying frame is provided with a crushing assembly for crushing materials at the tail end of the conveying, the crushing assembly includes two crushing rollers that rotate relatively to each other, an air supply pipe is provided inside the crushing roller, ventilation holes are provided on the pipe wall of the air supply pipe, and the air supply pipe is connected with the crushing roller through the ventilation holes. In the utility model, the raw material is extruded into a sheet by a sheet pressing cooling method, and the sheet material is crushed by two relatively rotating crushing rollers. The air supply pipe sends cold air into the crushing roller to air-cool the crushing roller to prevent the crushing roller from heating up during rotation and causing the material to stick to the crushing roller, and the material is further cooled by the crushing roller, which is beneficial to improving the crushing effect of the material.

Description

Technical Field

[0001] The utility model relates to the technical field of powder coating production, in particular to a grinding device for producing environmentally friendly powder coating. Background Art

[0002] Environmentally friendly powder coating is a solid powdered synthetic resin coating composed of solid resin, pigment, filler and additives. Unlike ordinary solvent-based coatings and water-based coatings, its dispersion medium is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film formation and low energy consumption. The process of powder coating production process is: first weigh the ingredients, pour the prepared raw materials into the stirring device for stirring, introduce the mixed raw materials into the extruder, melt and mix the raw materials through the extruder, and then press and cool the flakes. The flakes are roughly crushed, the coarse powder is ground, and the powder is graded and screened for inspection, and the qualified products are packaged. In the process of powder coating production, the molten raw materials are pressed into flakes, and then the flakes are cooled to change from a soft state to a crisp state, and then crushed by a crushing device to obtain coarse powder. In actual applications, the flakes are often poorly cooled in the cooling process of the flakes, resulting in poor crushing effect, which affects the quality of the product. In addition, the crushing roller generates heat during the rotation process, which makes the material easy to adhere to the crushing roller, causing trouble in cleaning the crushing roller. Utility Model Content

[0003] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides a grinding device for producing environmentally friendly powder coatings.

[0004] A grinding device for producing environmentally friendly powder coatings, including a conveying frame, wherein the conveying frame is provided with a crushing assembly for crushing materials at the tail end of the conveying, the crushing assembly includes two crushing rollers that rotate relative to each other, an air supply pipe is provided inside the crushing roller, and ventilation holes are provided on the pipe wall of the air supply pipe, and the air supply pipe is connected to the crushing roller through the ventilation holes.

[0005] Furthermore, a plurality of support column groups are provided on the outer wall of the air supply pipe along its length direction, and the plurality of support column groups are circumferentially distributed with the central axis of the ventilation pipe as the center, and the support columns in the same group are connected by support rollers, and the support rollers are in contact with the inner wall of the crushing roller.

[0006] Furthermore, one end of the crushing roller is rotatably connected to the end cover via a bearing, the end cover is fixedly mounted on the conveying frame, and the other end of the crushing roller is rotatably connected to the conveying frame via a rotating shaft.

[0007] Furthermore, one end of the air supply pipe passes through the end cover and the side plate of the conveying frame and is connected to the air supply device.

[0008] Furthermore, corresponding air outlet holes are provided on one end of the crushing roller away from the end cover and on the side plate of the conveying frame, and the air outlet holes are connected to the inside of the crushing roller.

[0009] Furthermore, a conveyor belt is provided on the conveyor frame, and the conveyor belt conveys by rotating a conveyor roller.

[0010] Furthermore, the two rotating shafts are provided with a first gear and a second gear meshing with each other, one of the rotating shafts is connected to the conveying roller through a sprocket chain mechanism, the conveying roller is connected to the motor through a chain sprocket mechanism, and the motor is installed in a motor box.

[0011] Furthermore, a collecting box is provided below the crushing roller, and the collecting box is placed on a bracket.

[0012] Furthermore, a crossbeam is provided above the conveying frame, a plurality of fans are provided on the lower end surface of the crossbeam, and the fans are installed at the front end of the crushing roller.

[0013] Due to the adoption of the above technical scheme, the beneficial technical effect of the utility model is as follows: in the utility model, the raw materials are extruded into sheets by a sheeting cooling method, the sheet-like materials are crushed by two relatively rotating crushing rollers, and the air supply pipe sends cold air into the crushing rollers to cool the crushing rollers, thereby preventing the crushing rollers from heating up during rotation and causing the materials to stick to the crushing rollers, and the materials are further cooled by the crushing rollers, which is beneficial to improving the crushing effect of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a grinding device for producing environmentally friendly powder coatings according to the utility model;

[0015] Figure 2 This is a side view of a grinding device for producing environmentally friendly powder coatings according to the utility model;

[0016] Figure 3 This is a top view of a grinding device for producing environmentally friendly powder coatings according to the utility model;

[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the cross-sectional structure in the AA direction;

[0018] Figure 5 For this utility model Figure 3 Schematic diagram of the cross-sectional structure along the BB direction.

[0019] In the figure, 1, conveying frame, 2, crushing roller, 3, air supply pipe, 4, ventilation hole, 5, support column, 6, support roller, 7, bearing, 8, end cover, 9, rotating shaft, 10, air outlet, 11, conveyor belt, 12, conveying roller, 13, first gear, 14, second gear, 15, motor box, 16, collection box, 17, bracket, 18, beam, 19, fan. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0021] according to Figure 1-5 As shown, a grinding device for environmentally friendly powder coating production includes a conveying frame 1, and the conveying frame 1 is provided with a crushing assembly for crushing materials at the tail end of the conveying, and the crushing assembly includes two crushing rollers 2 that rotate relative to each other, and an air supply pipe 3 is provided inside the crushing roller 2. The pipe wall of the air supply pipe 3 is provided with ventilation holes 4, and the air supply pipe 3 is connected with the crushing roller 2 through the ventilation holes 4.

[0022] In the above specific embodiment, the raw material is extruded into a sheet by a sheet pressing and cooling method, and the sheet material is crushed by two relatively rotating crushing rollers 2. The air supply pipe 3 sends cold air into the crushing roller 2 to cool the crushing roller 2 to prevent the crushing roller 2 from heating up during the rotation and causing the material to stick to the crushing roller 2. The material is further cooled by the crushing roller 2, which is beneficial to improving the crushing effect of the material.

[0023] A plurality of support columns 5 are provided on the outer wall of the air supply pipe 3 along its length direction. The plurality of support columns 5 are circumferentially distributed with the central axis of the ventilation pipe as the center. The support columns 5 in the same group are connected by support rollers 6. The support rollers 6 are in contact with the inner wall of the crushing roller 2. The strength of the crushing roller 2 can be enhanced by the support rollers 6.

[0024] One end of the crushing roller 2 is rotatably connected to the end cover 8 via a bearing 7, and the end cover 8 is fixedly mounted on the conveying frame 1. The other end of the crushing roller 2 is rotatably connected to the conveying frame 1 via a rotating shaft 9, and the crushing roller 2 is driven to rotate via the rotating shaft 9.

[0025] One end of the air supply pipe 3 passes through the end cover 8 and the side plate of the conveying frame 1 to be connected to the air supply device, and cold air is supplied to the crushing roller 2 through the air supply device to achieve cooling of the crushing roller 2.

[0026] Corresponding air outlet holes 10 are provided on the end of the crushing roller 2 away from the end cover 8 and the side plate of the conveying frame 1. The air outlet holes 10 are connected to the inside of the crushing roller 2. The air supply device sends cold air into the air supply pipe 3. The cold air enters the crushing roller 2 through the ventilation holes 4 to cool the crushing roller 2, and then flows out through the air outlet holes 10.

[0027] The conveyor frame 1 is provided with a conveyor belt 11 , and the conveyor belt 11 is conveyed by the rotation of a conveyor roller 12 .

[0028] The two rotating shafts 9 are provided with a first gear 13 and a second gear 14 that mesh with each other. One of the rotating shafts 9 is connected to the conveying roller 12 through a sprocket chain mechanism, and the conveying roller 12 is connected to the motor through a chain sprocket mechanism. The motor is installed in a motor box 15, and the crushing roller 2 and the conveying roller 12 are driven to rotate by the motor.

[0029] A collecting box 16 is provided below the crushing roller 2. The collecting box 16 is placed on a bracket 17. The collecting box 16 is used to collect the coarse powder after crushing.

[0030] A crossbeam 18 is provided above the conveying frame 1, and a plurality of fans 19 are provided on the lower end surface of the crossbeam 18. The fans 19 are installed at the front end of the crushing roller 2. By providing the fans 19, air cooling can be performed before the material is crushed, which is beneficial to improving the effect of material crushing.

[0031] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A grinding device for producing environmentally friendly powder coatings, comprising a conveyor frame (1), characterized in that: The conveying frame (1) is provided with a crushing assembly for crushing materials at the tail end of the conveying, and the crushing assembly includes two crushing rollers (2) that rotate relative to each other, and an air supply pipe (3) is provided inside the crushing roller (2), and a ventilation hole (4) is provided on the pipe wall of the air supply pipe (3), and the air supply pipe (3) is connected to the crushing roller (2) through the ventilation hole (4).

2. The grinding device for producing environmentally friendly powder coatings according to claim 1, characterized in that: A plurality of support column (5) groups are provided on the outer wall of the air supply pipe (3) along its length direction, and the plurality of support column (5) groups are circumferentially distributed with the central axis of the ventilation pipe as the center, and the support columns (5) in the same group are connected by support rollers (6), and the support rollers (6) are in contact with the inner wall of the crushing roller (2).

3. The grinding device for producing environmentally friendly powder coatings according to claim 2, characterized in that: One end of the crushing roller (2) is rotatably connected to the end cover (8) via a bearing (7), the end cover (8) is fixedly mounted on the conveying frame (1), and the other end of the crushing roller (2) is rotatably connected to the conveying frame (1) via a rotating shaft (9).

4. The grinding device for producing environmentally friendly powder coatings according to claim 3, characterized in that: One end of the air supply pipe (3) passes through the end cover (8) and the side plate of the conveying frame (1) and is connected to the air supply device.

5. The grinding device for producing environmentally friendly powder coatings according to claim 4, characterized in that: Corresponding air outlet holes (10) are provided on one end of the crushing roller (2) away from the end cover (8) and on the side plate of the conveying frame (1), and the air outlet holes (10) are connected to the inside of the crushing roller (2).

6. The grinding device for producing environmentally friendly powder coatings according to claim 5, characterized in that: The conveying frame (1) is provided with a conveying belt (11), and the conveying belt (11) is conveyed by the rotation of a conveying roller (12).

7. The grinding device for producing environmentally friendly powder coatings according to claim 6, characterized in that: The two rotating shafts (9) are provided with a first gear (13) and a second gear (14) meshing with each other. One of the rotating shafts (9) is connected to a conveying roller (12) through a sprocket chain mechanism. The conveying roller (12) is connected to a motor through a chain sprocket mechanism. The motor is installed in a motor box (15).

8. The grinding device for producing environmentally friendly powder coatings according to claim 7, characterized in that: A collecting box (16) is provided below the crushing roller (2), and the collecting box (16) is placed on a bracket (17).

9. The grinding device for producing environmentally friendly powder coatings according to claim 8, characterized in that: A crossbeam (18) is provided above the conveying frame (1), and a plurality of fans (19) are provided on the lower end surface of the crossbeam (18). The fans (19) are installed at the front end of the crushing roller (2).

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