Powder coating grinding automatic production equipment

Abstract

The utility model belongs to the technical field of automatic production equipment for powder coating grinding, and particularly relates to automatic production equipment for powder coating grinding. The device comprises a grinding tank, a rotating shaft is arranged in the grinding tank, the upper end of the rotating shaft is connected with a motor, a grinding disc is installed on the rotating shaft, and grinding teeth are arranged on the side wall of the grinding disc; an upper grinding seat is fixed in the grinding tank; a lower grinding seat is fixed at the bottom of the upper grinding seat, and filter holes are formed in the lower grinding seat; a barrel is arranged between the lower grinding base and the inner bottom wall of the grinding tank, a discharging port is formed in the grinding tank, a dust outlet is formed in the bottom wall of the grinding tank, the dust outlet is connected with a dust outlet pipe, and a dust suction fan is installed on the dust outlet pipe. Paint is ground under the cooperation of the grinding disc and the upper grinding seat, secondary grinding is performed under the cooperation of the lower grinding seat and the grinding disc, dust falls out through filtering holes in the grinding disc during secondary grinding, the falling dust is sucked out from a dust outlet through the dust suction fan, the dust is discharged during grinding, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic production equipment for grinding powder coatings, and particularly relates to an automatic production equipment for grinding powder coatings. Background Art

[0002] Powder coatings are a type of solid coating composed of raw materials such as resins, pigments, fillers, and auxiliaries. Compared with traditional liquid coatings, the particles of powder coatings are in powder form, solvent-free, and have characteristics such as environmental protection, high efficiency, and good weather resistance. Grinding is one of the most important technological steps in the production process of powder coatings, which can ensure that the particle size of the powder coatings reaches the specified standard.

[0003] In the existing grinding equipment, before grinding the powder coatings, there is no prior dispersion treatment or simple dispersion through a guiding plate. When the powder coatings caked due to moisture absorption are ground, they cannot enter the grinding tank, affecting the grinding efficiency. And only through one-time grinding, the grinding effect is insufficient, resulting in too coarse particle size of the powder coatings, affecting the quality and uniformity of the coating. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automatic production equipment for grinding powder coatings, which realizes filtration while performing two-time grinding, thereby improving the grinding quality and efficiency.

[0005] The described automatic production equipment for grinding powder coatings includes a grinding tank in a columnar structure and vertically arranged. A rotating shaft is independently and vertically arranged inside the grinding tank. The upper end of the rotating shaft passes through the grinding tank and is connected to a motor, and the power output end of the motor is connected to the upper end of the rotating shaft. A grinding disc is horizontally installed on the rotating shaft inside the grinding tank, and grinding teeth are provided on the side wall of the grinding disc.

[0006] The upper end of the grinding disc is in a frustum of a cone structure, and the lower end is in an inverted frustum of a cone structure. The grinding teeth are distributed on the side walls of the frustum of a cone structure and the inverted frustum of a cone structure.

[0007] An upper grinding seat that is in mutual grinding cooperation with the grinding teeth of the frustum of a cone structure is fixed inside the grinding tank. The outer side wall of the upper grinding seat is in contact with the inner side wall of the grinding tank.

[0008] A lower grinding seat that is in mutual grinding cooperation with the grinding teeth of the inverted frustum of a cone structure is fixed at the bottom of the upper grinding seat. A number of uniformly spaced and vertically communicating filter holes are provided on the lower grinding seat.

[0009] A vertically communicating cylinder is vertically arranged between the lower grinding seat and the inner bottom wall of the grinding tank. An outlet is provided on the grinding tank corresponding to the lower end opening of the cylinder. A dust outlet is provided on the bottom wall of the grinding tank on one side of the cylinder. The dust outlet end of the dust outlet is connected to a dust outlet pipe, and a dust suction fan is installed on the dust outlet pipe.

[0010] There is a feed inlet on the grinding tank above the grinding disc.

[0011] After feeding from the feed inlet, the coating is first ground through the grinding cooperation between the conical platform structure at the upper end of the grinding disc and the upper grinding seat, and then the coating is ground for the second time through the grinding cooperation between the lower grinding seat and the inverted conical platform structure at the lower end of the grinding disc. During the second grinding, the dust with too small particle size during grinding falls out through the filter holes on the grinding disc. At the same time as the dust falls out, the dust suction fan on the dust outlet pipe sucks out the falling dust from the dust outlet, preventing the dust from accumulating in the grinding tank and at the filter holes. The ground coating is discharged from the discharge port through the cylinder body; while grinding, the dust with too small particle size is discharged, and there is no need to reset the filtering device, improving the working efficiency.

[0012] Further, a first guiding block in the shape of a funnel structure is installed on the top of the upper grinding seat, and the outer side wall of the first guiding block fits with the inner side wall of the grinding tank.

[0013] The first guiding block that fits inside the grinding tank guides the coating to be ground entering from the feed inlet to the mating part between the grinding disc and the upper grinding seat.

[0014] Further, a stirring blade is installed on the rotating shaft between the grinding disc and the inner top wall of the grinding tank.

[0015] The stirring blade can disperse the coating to be ground entering, preventing the agglomerated coating to be ground from not being able to enter the grinding mating part.

[0016] Further, a second guiding block is provided inside the cylinder body to guide the ground coating to the discharge port.

[0017] The second guiding block guides the ground coating to the discharge port, preventing accumulation.

[0018] Further, the feed inlet is arranged at the top of the grinding tank.

[0019] Arranging the feed inlet at the top of the grinding tank can enable the coating to be ground to enter from above the stirring blade, and the dispersing effect of the stirring blade is good.

[0020] Further, a feed hopper is connected to the feed end of the feed inlet.

[0021] The feed hopper can increase the space area for pouring the coating to be ground from the feed inlet, preventing spillage.

[0022] Further, a discharge pipe is connected to the discharge end of the discharge port.

[0023] Further, at least three support legs are installed at the bottom of the grinding tank, which are evenly spaced along the circumference.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] First, the coating is ground through the grinding cooperation between the conical frustum structure at the upper end of the grinding disc and the upper grinding seat, and then the coating is ground for the second time through the grinding cooperation between the lower grinding seat and the inverted conical frustum structure at the lower end of the grinding disc. While the second grinding is carried out, the dust with too small particle size during grinding falls out through the filter holes on the grinding disc. While the dust falls out, the dust suction fan on the dust outlet pipe sucks the falling dust from the dust outlet, preventing the dust from accumulating in the grinding tank and at the filter holes. The ground coating is discharged from the discharge port through the cylinder body; while grinding, the dust with too small particle size is discharged, and there is no need to reset the filtering device, improving the working efficiency. Description of the Drawings

[0026] Figure 1 It is a front view structural schematic diagram of an automatic production equipment for grinding powder coatings;

[0027] Figure 2 It is Figure 1 the top view structural schematic diagram of;

[0028] Figure 3 It is Figure 1 the sectional view structural schematic diagram along the A-A line in;

[0029] Figure 4 It is Figure 1 the sectional view structural schematic diagram along the B-B line in;

[0030] Figure 5 It is Figure 1 the sectional view structural schematic diagram along the C-C line in;

[0031] Figure 6 It is Figure 1 the three-dimensional structural schematic diagram of the partial section of the grinding tank in;

[0032] Figure 7 It is Figure 6 the reduced explosion structural schematic diagram.

[0033] Names of each component in the figure: 1. Feed hopper; 2. Feed inlet; 3. Motor; 4. Rotating shaft; 5. Grinding tank; 6. Stirring blade; 7. First guide block; 8. Upper grinding seat; 9. Grinding disc; 10. Dust outlet pipe; 11. Dust suction fan; 12. Dust outlet; 13. Support leg; 14. Second guide block; 15. Discharge port; 16. Discharge pipe; 17. Cylinder body; 18. Lower grinding seat. Detailed Implementation Modes

[0034] The following further illustrates the present invention through specific embodiments in conjunction with the drawings, but it is not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0035] Embodiment

[0036] The following materials are used in this embodiment:

[0037] 1. Prepare several materials with high easy-to-clean strength, such as SUS340, SUS231, or SUS316L, for manufacturing the grinding tank 5, the first guide block 7, and the second guide block 14;

[0038] 2. Prepare several metal materials with relatively high strength and hardness, such as stainless steel or titanium alloy, which can withstand the force during the stirring process, for manufacturing the rotating shaft 4 and the stirring blade 6;

[0039] 3. Prepare one motor 3 that is corrosion-resistant and wear-resistant;

[0040] 4. Prepare multiple support legs 13 made of materials with high strength, such as gray cast iron or angle steel, with at least three;

[0041] 5. Prepare one feed hopper 1;

[0042] 6. Prepare a section of pipeline made of materials with high strength and easy to clean, such as stainless steel, to be used as the dust outlet pipe 10 and the discharge pipe 16;

[0043] 7. Prepare several wear-resistant metals with high strength and hardness like cast iron for manufacturing the upper grinding seat 8, the grinding disc 9, and the lower grinding seat 18.

[0044] 8. Prepare one dust suction fan 11, and the specific model is selected according to the required dust suction force.

[0045] The assembly method of the above materials is as follows:

[0046] The first step: Manufacturing

[0047] Manufacture one grinding tank 5; as Figure 1 and Figure 2 shown, the main body of the grinding tank 5 is a cylindrical structure, the two ends of the grinding tank 5 are rounded, and the inside is hollow; as Figure 1 shown, a through hole is vertically opened at the center of the top of the grinding tank 5 for passing through the rotating shaft 4; a feed port 2 is opened at the top of the grinding tank 5, and the feed end of the feed port 2 is fixedly installed with the feed hopper 1; a discharge port 15 is opened in the central area at the bottom of the grinding tank 5, and the discharge end of the discharge port is connected to the discharge pipe 16; as Figure 1 and Figure 4 shown, a dust outlet 12 is opened on the right side at the bottom of the grinding tank 5, the dust outlet end of the dust outlet 12 is connected to the dust outlet pipe 10, and the dust suction fan 11 is fixedly installed on the dust outlet pipe 10.

[0048] Manufacture one first guide block 7; as Figure 1 and Figure 3 shown, the main body of the first guide block 7 is an annular funnel structure.

[0049] Fabricate one second guiding block 14; as Figure 1 and Figure 4 shown, the main body of the second guiding block 14 is a circular funnel structure; as Figure 1 shown, the size of the lower port of the second guiding block 14 is the same as that of the discharge port 15.

[0050] Fabricate one rotating shaft 4 and four stirring blades 6; as Figure 1 and Figure 7 shown, the main body of the rotating shaft 4 is a cylindrical structure, and the stirring blade 6 is a rectangular block structure; as Figure 1 shown, a plurality of rectangular hollowings are provided on the stirring blade 6, and the bottom of the stirring blade 6 is chamfered, and the chamfer size is the same as that of the first guiding block 7; as Figure 3 and 7 shown, the four stirring blades 6 are fixed on the upper half of the rotating shaft 4, and the stirring blades 6 are evenly distributed in a circle.

[0051] Fabricate one upper grinding seat 8, as Figure 1 and Figure 7 shown, the main body of the upper grinding seat 8 is a circular ring structure; as Figure 1 shown, the bottom surface of the upper grinding seat 8 is an overall conical groove, and the cross section of the conical groove is stepped.

[0052] Fabricate one lower grinding seat 18, as Figure 1 and Figure 7 shown, the main body of the lower grinding seat 18 is a circular ring structure; as Figure 1 shown, the top surface of the lower grinding seat 18 is an overall inverted conical groove, and the cross section of the conical groove is stepped; as Figure 5 shown, a number of filter holes are provided on the lower grinding seat 18 and are equally spaced in a circle, and the size of the filter holes is determined according to the dust particle size; as Figure 5 shown, a cylinder 17 is connected below the lower grinding seat 18.

[0053] Fabricate one grinding disc 9; as Figure 1 and Figure 7 shown, the grinding disc 9 is a cylindrical structure, as Figure 1 shown, stepped chamfers are provided at both the upper and lower ends of the grinding disc 9, the upper end is in grinding fit with the upper grinding seat 8, the lower end is in grinding fit with the lower grinding seat 18, and a through hole communicating up and down is vertically provided in the center.

[0054] Second step: Assembly

[0055] As Figure 1As shown in the figure, first place the grinding tank 5 horizontally, and install the support legs 13 at the bottom. The support legs 13 are evenly distributed in a circular pattern at the bottom of the grinding tank 5; then fixedly install the cylinder 17 between the bottom inside the grinding tank 5 and the lower grinding seat 18, and install the second guide block 14 inside the cylinder 17; then sleeve the grinding disc 9 on the rotating shaft 4, place the grinding disc 9 between the lower grinding seat 18 and the upper grinding seat 8, the upper grinding seat 8 is fixed at the top of the lower grinding seat 18, and install the first guide block 7 on the upper grinding seat 8; then install the motor 3 on the top of the grinding tank 5, and connect the rotating shaft at the power output end of the motor 3 to the rotating shaft 4.

[0056] The usage instructions are as follows:

[0057] During use, start the motor 3 to drive the rotating shaft 4 to make the stirring blade 6 and the grinding disc 9 rotate; add the paint to be ground from the feed hopper 1, enter the grinding tank 5 through the feed port 2, and disperse the paint to be ground through the stirring blade 6; then, guided by the first guide block 7, enter the gap between the upper grinding seat 8 and the grinding disc 9 to perform the primary grinding on the paint to be ground; the powder paint that has been primarily ground enters the gap between the grinding disc 9 and the lower grinding seat 18 for secondary grinding. During grinding, the fine dust falls into the bottom of the tank through the filter holes on the lower grinding seat 18; the ground powder paint falls into the cylinder 17 and is discharged through the discharge port 15 under the guidance of the second guide block 14; start the dust suction fan 11 during grinding to discharge the falling dust and the dust at the bottom of the tank through the dust outlet pipe 10.

[0058] In the above solution, before grinding, the paint to be ground is dispersed by the stirring blade 6 first, which can solve the problem that the paint to be ground is inconvenient to grind due to particle agglomeration; through the cooperation of the upper grinding seat 8, the grinding disc 9 and the lower grinding seat 18, the paint to be ground is ground twice; and through the filter holes of the lower grinding seat 18, the fine dust can be conveniently separated and processed, and filtration is achieved while grinding, thereby improving the quality and efficiency of grinding.

Claims

1. An automatic production equipment for grinding powder coatings, comprising a grinding tank (5) with a columnar structure and vertically arranged, characterized in that: A rotating shaft (4) is independently and vertically arranged inside the grinding tank (5). The upper end of the rotating shaft (4) passes through the grinding tank (5) and is connected to a motor (3). The power output end of the motor (3) is connected to the upper end of the rotating shaft (4). A grinding disc (9) is horizontally installed on the rotating shaft (4) inside the grinding tank (5), and grinding teeth are provided on the side wall of the grinding disc (9). The upper end of the grinding disc (9) is in the shape of a frustum of a cone, and the lower end is in the shape of an inverted frustum of a cone. The grinding teeth are distributed on the side walls of the frustum of a cone structure and the inverted frustum of a cone structure. An upper grinding seat (8) that is in mutual grinding cooperation with the grinding teeth of the frustum of a cone structure is fixed inside the grinding tank (5). The outer side wall of the upper grinding seat (8) is in contact with the inner side wall of the grinding tank (5). A lower grinding seat (18) that is in mutual grinding cooperation with the grinding teeth of the inverted frustum of a cone structure is fixed at the bottom of the upper grinding seat (8). A number of filter holes that are evenly spaced and communicate vertically are provided on the lower grinding seat (18). A cylinder (17) that communicates vertically is provided between the lower grinding seat (18) and the inner bottom wall of the grinding tank (5). An outlet (15) is provided on the grinding tank (5) corresponding to the lower end opening of the cylinder (17). A dust outlet (12) is provided on the bottom wall of the grinding tank (5) on one side of the cylinder (17). The dust outlet end of the dust outlet (12) is connected to a dust outlet pipe (10), and a dust suction fan (11) is installed on the dust outlet pipe (10). An inlet is provided on the grinding tank (5) above the grinding disc (9).

2. The automatic production equipment for grinding powder coatings according to claim 1, characterized in that: A first guiding block (7) in the shape of a funnel is installed at the top of the upper grinding seat (8), and the outer side wall of the first guiding block (7) is in contact with the inner side wall of the grinding tank (5).

3. The automatic production equipment for grinding powder coatings according to claim 2, characterized in that: A stirring blade (6) is installed on the rotating shaft (4) between the grinding disc (9) and the inner top wall of the grinding tank (5).

4. The automatic production equipment for grinding powder coatings according to claim 3, characterized in that: A second guiding block (14) that guides the ground coating to the outlet (15) is provided inside the cylinder (17).

5. The automatic production equipment for grinding powder coatings according to claim 4, wherein: The inlet (2) is provided at the top of the grinding tank (5).

6. The automatic production equipment for grinding powder coatings according to claim 5, characterized in that: The feeding end of the inlet (2) is connected to a feeding hopper (1).

7. The automatic production equipment for grinding powder coatings according to claim 6, characterized in that: The discharging end of the outlet (15) is connected to a discharging pipe (16).

8. The automatic production equipment for grinding powder coatings according to claim 7, wherein: At least three supporting legs (13) that are evenly spaced along the circumference are installed at the bottom of the grinding tank (5).

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