Powder coating production device

Abstract

The utility model provides a powder coating production device, which relates to the technical field of coating production equipment and comprises an extrusion device, a cooling and conveying device and a grinding device. The grinding device abuts against the end, away from the extrusion device, of the cooling and conveying device. Wherein the extrusion device comprises a driving mechanism, an extrusion cylinder, a feeding hopper and a screw rod, the screw rod is arranged in the extrusion cylinder, the driving mechanism is fixedly connected with the screw rod, the feeding hopper is arranged at the end, close to the driving mechanism, of the extrusion cylinder and communicated with the extrusion cylinder, and the screw rod is fixedly connected with the driving mechanism. A connecting section, a first material conveying section, a shearing section and a second material conveying section are sequentially arranged on the screw rod, and the connecting section is fixedly connected with the driving mechanism. According to the powder coating production device, the shearing force of the screw can be effectively enhanced, continuous processing of raw materials and stable production of the powder coating are achieved, and the final performance and quality of the powder coating are guaranteed.

Description

Technical Field

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

[0002] Powder coating is a high-efficiency and environmentally friendly form of coating, mainly composed of solid materials such as resin, curing agent, pigments, fillers, and additives mixed in a certain proportion. It features energy saving, low pollution, high coating efficiency, good surface corrosion resistance, and high mechanical strength. Powder coating can not only form a film in one step but also adapt to various coating processes, and is widely used in construction, automotive, home appliance, and pipeline corrosion protection.

[0003] The production process of powder coatings typically includes premixing, melt mixing, and crushing and screening. Premixing involves adding various solid materials to a high-speed mixer for initial mixing. Melt mixing uses an extruder to melt and homogenize the mixture at high temperatures. Subsequently, the material is crushed and screened by a grinding mill to finally obtain a finished powder coating product with a uniform particle size distribution.

[0004] A Chinese utility model patent with publication number CN219153668U discloses an extruder for powder coating production, including a drive unit, an extrusion tube, an extrusion screw, a vibrating feeding mechanism, a heat-conducting block, a base, and support legs. A heat-conducting block is installed at one end of the base, and a support block is installed at the other end. An extrusion tube is fixedly installed on the upper end of the heat-conducting block and the support block. An outlet is opened at one end of the extrusion tube near the heat-conducting block, and an inlet is opened at the other end of the extrusion tube. The extrusion screw is installed inside the extrusion tube, and one end of the extrusion screw is rotatably connected to the inner wall of the extrusion tube near the inlet. The output end of the drive unit is connected to the extrusion screw. The vibrating feeding mechanism is installed above the inlet. However, the shear force of the extrusion screw in the above technical solution is relatively weak, resulting in an unsatisfactory mixing effect of the material in the screw, affecting the final performance and quality of the powder coating. Utility Model Content

[0005] Therefore, in order to solve the problem of weak shear force in existing extruder screws, which affects the final performance and quality of powder coatings, the purpose of this utility model is to provide a powder coating production device, the specific technical solution of which is as follows:

[0006] A powder coating production apparatus includes an extrusion device, a cooling and conveying device, and a grinding device. The cooling and conveying device abuts against the extrusion device; the grinding device abuts against the end of the cooling and conveying device away from the extrusion device. The extrusion device includes a drive mechanism, an extrusion cylinder, a feed hopper, and a screw. The screw is disposed inside the extrusion cylinder. The drive mechanism is fixedly connected to the screw. The feed hopper is disposed on the end of the extrusion cylinder near the drive mechanism and communicates with the extrusion cylinder. The screw is sequentially provided with a connecting section, a first conveying section, a shearing section, and a second conveying section. The connecting section is fixedly connected to the drive mechanism.

[0007] Furthermore, the first conveying section includes a plurality of first spiral blades, each first spiral blade being spirally disposed on the outside of the screw and fixedly connected to the screw, each first spiral blade being arc-shaped on the side facing the connecting section to form a first arc-shaped surface, and each first spiral blade being perpendicular to the outer surface of the screw on the side facing the shearing section to form a first pushing surface.

[0008] Furthermore, the shearing section includes a primary shearing block, a secondary shearing block, and a final shearing block, which are connected in sequence. The thickness of the primary shearing block, the secondary shearing block, and the final shearing block decreases in sequence. The primary shearing block is located at one end near the first conveying section, and the final shearing block is located at one end near the second conveying section.

[0009] Furthermore, a plurality of initial shear blocks are provided, and the included angle between adjacent initial shear blocks is greater than 0° and less than 180°.

[0010] Furthermore, a plurality of secondary shear blocks are provided, and the included angle between adjacent secondary shear blocks is greater than 0° and less than 180°.

[0011] Furthermore, several end-shear blocks are provided, and the included angle between adjacent end-shear blocks is greater than 0° and less than 180°.

[0012] Furthermore, the second conveying section includes a plurality of second spiral blades, each second spiral blade being spirally arranged on the outside of the screw and fixedly connected to the screw. Each second spiral blade is arranged in an arc shape on the side facing the shearing section to form a second arc-shaped surface, and each second spiral blade is arranged perpendicular to the outer surface of the screw on the side facing away from the shearing section to form a second propulsion surface.

[0013] Furthermore, the grinding device includes a protective cover, a feed hopper, a stationary grinding disc, a moving grinding disc, and a drive motor. The feed hopper is fixedly connected to the protective cover. The stationary grinding disc is disposed inside the protective cover and movably connected to the protective cover. The moving grinding disc is disposed inside the protective cover and rotatably connected to the protective cover. A feed inlet is provided in the middle of the stationary grinding disc, and the feed hopper communicates with the feed inlet. The output end of the drive motor is fixedly connected to the moving grinding disc. Several grinding blades are provided on one side of the moving grinding disc near the stationary grinding disc. The grinding blades are detachably connected to the moving grinding disc. A discharge port is provided at the bottom of the protective cover, and the discharge port is located between the stationary grinding disc and the moving grinding disc.

[0014] Furthermore, the grinding tool includes a first cutting block and a second cutting block, the first cutting block is disposed around the second cutting block, the height of the first cutting block is greater than the height of the second cutting block, and the first cutting block and the second cutting block are spaced apart.

[0015] Furthermore, a sealing element is provided between the outer edge of the stationary grinding disc and the moving grinding disc and the protective cover, and the two sealing elements are respectively fixedly connected to the stationary grinding disc and the moving grinding disc.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting up an extrusion device, the raw materials are initially processed. The extrusion device includes a drive mechanism, an extrusion cylinder, a feed hopper, and a screw. The drive mechanism provides the necessary torque and speed to drive the screw to rotate within the extrusion cylinder. The feed hopper introduces the raw materials into the extrusion cylinder for processing by the screw. The screw conveys, plasticizes, and shears the raw materials. The screw is sequentially equipped with a connecting section, a first conveying section, a shearing section, and a second conveying section, which effectively enhances the shearing force of the screw. By setting up a cooling conveying device, the material processed by the extrusion device is conveyed to a grinding device for further grinding and processing. The grinding device grinds the material from the cooling conveying device into powder coatings that meet the requirements. This utility model's powder coating production device effectively enhances the shearing force of the screw, achieving continuous processing of raw materials and stable production of powder coatings, ensuring the final performance and quality of the powder coatings. Attached Figure Description

[0017] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but the focus is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0018] Figure 1 This is a schematic diagram of the structure of a powder coating production device according to an embodiment of the present invention;

[0019] Figure 2This is a schematic diagram of the screw structure according to an embodiment of the present invention. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the screw structure according to an embodiment of the present invention. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the shearing segment according to an embodiment of the present invention;

[0022] Figure 5 This is a front view of the shearing segment according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the grinding device according to an embodiment of the present invention;

[0024] Figure 7 This is a cross-sectional view of a grinding device according to an embodiment of the present invention;

[0025] Figure 8 yes Figure 7 A magnified structural diagram of A in the diagram.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Extrusion device; 11. Drive mechanism; 12. Extrusion cylinder; 13. Feed hopper; 14. Screw; 141. Connecting section; 142. First conveying section; 1421. First spiral blade; 1422. First arc-shaped surface; 1423. First propulsion surface; 143. Shearing section; 1431. Initial shearing block; 1432. Secondary shearing block; 1433. Final shearing block; 144. Second conveying section; 1441. Second spiral blade; 1442. Second arc-shaped surface; 1443. Second propulsion surface; 2. Cooling conveying device; 3. Grinding device; 31. Protective cover; 311. Discharge port; 32. Feed hopper; 33. Stationary grinding disc; 331. Feed port; 34. Moving grinding disc; 341. Grinding blade; 3411. First blade; 3412. Second blade; 35. Drive motor; 36. Seal. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and do not limit the scope of protection of this utility model.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0032] like Figures 1-3 As shown, a powder coating production apparatus according to one embodiment of the present invention includes an extrusion device 1, a cooling and conveying device 2, and a grinding device 3. The cooling and conveying device 2 abuts against the extrusion device 1; the grinding device 3 abuts against the end of the cooling and conveying device 2 away from the extrusion device 1. The extrusion device 1 includes a drive mechanism 11, an extrusion cylinder 12, a feed hopper 13, and a screw 14. The screw 14 is disposed inside the extrusion cylinder 12. The drive mechanism 11 is fixedly connected to the screw 14. The feed hopper 13 is disposed on the end of the extrusion cylinder 12 near the drive mechanism 11 and communicates with the extrusion cylinder 12. The screw 14 is sequentially provided with a connecting section 141, a first conveying section 142, a shearing section 143, and a second conveying section 144. The connecting section 141 is fixedly connected to the drive mechanism 11. The extrusion unit 1 is responsible for the initial processing of raw materials. The extrusion unit 1 includes a drive mechanism 11, an extrusion cylinder 12, a feed hopper 13, and a screw 14. The drive mechanism 11 provides the necessary torque and speed to drive the screw 14 to rotate within the extrusion cylinder 12. The feed hopper 13 introduces the raw materials into the extrusion cylinder 12 for processing by the screw 14. The screw 14 conveys, plasticizes, and shears the raw materials. The screw 14 is sequentially equipped with a connecting section 141, a first conveying section 142, a shearing section 143, and a second conveying section 144, which effectively enhances the shearing force of the screw 14. A cooling conveying device 2 is provided to transport the material processed by the extrusion unit 1 to a grinding unit 3 for further grinding and processing. The grinding unit 3 is responsible for grinding the material from the cooling conveying device 2 into a powder coating that meets the requirements.

[0033] As a preferred embodiment of this utility model, it may also have the following additional technical features: the first conveying section 142 includes a plurality of first spiral blades 1421, each first spiral blade 1421 being spirally arranged on the outside of the screw 14 and fixedly connected to the screw 14, ensuring that the spiral blades can stably follow the rotation when the screw 14 rotates, thereby effectively pushing the material forward in the extrusion cylinder 12. Each first spiral blade 1421 is arc-shaped on the side facing the connecting section 141 to form a first arc-shaped surface 1422, reducing the material's movement during the conveying process. The frictional resistance allows the material to pass through the screw 14 more smoothly. Through the arc-shaped guide, the material is stirred under the rotation of the screw 14, thus initially achieving the mixing of the material. Each first spiral blade 1421 is set perpendicular to the outer surface of the screw 14 on the side facing the shearing section 143 to form a first propulsion surface 1423. When the screw 14 rotates, the first propulsion surface 1423 pushes the material from the connecting section 141 to the shearing section 143, ensuring that the material can continuously and stably enter the shearing section 143 for further mixing and shearing.

[0034] Please see Figures 4-5 As a preferred embodiment of this utility model, it may also have the following additional technical features: the shearing section 143 includes a primary shearing block 1431, a secondary shearing block 1432, and a final shearing block 1433, which are connected sequentially. The thickness of the primary shearing block 1431, the secondary shearing block 1432, and the final shearing block 1433 decreases sequentially. The primary shearing block 1431 is located at one end near the first conveying section 142 and is the first contact point after the material enters the shearing section 143, providing sufficient strength and stability to withstand the pressure of the material during the shearing process. The secondary shear block 1432, located between the primary shear block 1431 and the final shear block 1433, serves as a transition and further shearing mechanism. The thickness of the secondary shear block 1432 is reduced compared to the primary shear block 1431, but it still maintains a certain strength to ensure continuous and stable material propulsion during the shearing process. The final shear block 1433, positioned near the end of the second conveying section 144, is the last shearing step before the material leaves the shearing section 143. It has the smallest thickness, which helps increase the shearing force on the shearing surface, allowing the material to be fully sheared and mixed before leaving the shearing section 143. By using shear blocks of different thicknesses, multiple shearing surfaces can be formed within the shearing section 143, thereby increasing the number of shearing steps and the shearing force during the shearing process. This helps to shear the material into smaller particles, improving the uniformity and fineness of the powder coating.

[0035] As a preferred embodiment of this utility model, it may also have the following additional technical features: a plurality of initial shear blocks 1431 are provided, and the included angle between adjacent initial shear blocks 1431 is greater than 0° and less than 180°, which helps to form multiple shear surfaces between the initial shear blocks 1431, thereby increasing the number of shearing times and shearing force of the material during the rotational shearing process. As the material is pushed forward, the material at different positions can mix with each other, further improving the quality of the powder coating.

[0036] As a preferred embodiment of this utility model, it may also have the following additional technical features: a plurality of secondary shearing blocks 1432 are provided, and the included angle between adjacent secondary shearing blocks 1432 is greater than 0° and less than 180°, which helps to generate more shearing surfaces when the material passes through, thereby enhancing the shearing effect. After the primary shearing block 1431 performs preliminary shearing on the material, the secondary shearing block 1432, through its specific included angle design, can further refine the shearing of the material, which helps to cut the material particles into smaller sizes and improve the uniformity and fineness of the powder coating.

[0037] As a preferred embodiment of this utility model, it may also have the following additional technical features: a plurality of end-shearing blocks 1433 are provided, and the included angle between adjacent end-shearing blocks 1433 is greater than 0° and less than 180°, which can perform final fine shearing on the material, which helps to cut the material particles into smaller sizes, thereby improving the uniformity and fineness of the powder coating.

[0038] As a preferred embodiment of this utility model, it may also have the following additional technical features: the second conveying section 144 includes a plurality of second spiral blades 1441, each second spiral blade 1441 is spirally arranged on the outside of the screw 14 and fixedly connected to the screw 14, and each second spiral blade 1441 is arranged in an arc shape on the side facing the shearing section 143 to form a second arc surface 1442, which helps the material to be uniformly squeezed and propelled when passing through, thereby improving the conveying efficiency. Each second spiral blade 1441 is arranged perpendicular to the outer surface of the screw 14 on the side facing away from the shearing section 143 to form a second propelling surface 1443, so that the material can maintain a certain speed and stability during the conveying process, and prevent the material from being blocked or stuck during the conveying process.

[0039] Please see Figures 6-8As a preferred embodiment of this utility model, it may also have the following additional technical features: the grinding device 3 includes a protective cover 31, a feed hopper 32, a stationary grinding disc 33, a moving grinding disc 34, and a drive motor 35. The feed hopper 32 is fixedly connected to the protective cover 31. The stationary grinding disc 33 is disposed inside the protective cover 31 and is movably connected to the protective cover 31. The moving grinding disc 34 is disposed inside the protective cover 31 and is rotatably connected to the protective cover 31. A feed inlet 331 is provided in the middle of the stationary grinding disc 33. The feed hopper 32 is connected to the feed inlet 331. The output end of the drive motor 35 is fixedly connected to the moving grinding disc 34. Several grinding blades 341 are provided on the side of the moving grinding disc 34 near the stationary grinding disc 33. The grinding blades 341 are detachably connected to the moving grinding disc 34. A discharge port 311 is provided at the bottom of the protective cover 31. The discharge port 311 is located between the stationary grinding disc 33 and the moving grinding disc 34. When the drive motor 35 starts, it drives the moving grinding disc 34 to rotate. Material enters the feed inlet 331 of the stationary grinding disc 33 from the feed hopper 32 and falls into the grinding area between the stationary grinding disc 33 and the moving grinding disc 34. As the moving grinding disc 34 rotates, the grinding blade 341 generates friction and shearing force with the grinding surface of the stationary grinding disc 33, grinding the material into powder. The ground powder is discharged through the discharge port 311 at the bottom of the protective cover 31. In this embodiment, the grinding blade 341 includes a first blade 3411 and a second blade 3412. The first blade 3411 is disposed around the second blade 3412, and the height of the first blade 3411 is greater than the height of the second blade 3412. The first blade 3411 and the second blade 3412 are spaced apart. By using two layers of blades with different heights and configurations, diverse grinding functions are provided, further improving the grinding quality.

[0040] As a preferred embodiment of this utility model, it may also have the following additional technical features: a sealing element 36 is provided between the outer edge of the stationary grinding disc 33 and the moving grinding disc 34 and the protective cover 31. The two sealing elements 36 are respectively fixedly connected to the stationary grinding disc 33 and the moving grinding disc 34, which effectively prevents the powder from leaking out from the gap between the grinding disc and the protective cover 31, and keeps the grinding area clean and efficient.

[0041] Specifically, in this embodiment, the cooling conveying device 2 includes a tablet press and a Z-type conveyor. The tablet press is used to press and cool the material extruded by the extrusion device. Then, the material is conveyed to the grinding device 3 by the Z-type conveyor for further processing. The tablet press and the Z-type conveyor are conventional prior art and will not be described in detail here.

[0042] The working principle of the powder coating production device in this embodiment is as follows: Raw materials enter the extrusion cylinder 12 through the feed hopper 13 and are conveyed to the shearing section 143 by the first conveying section 142 on the screw 14. In the shearing section 143, the shearing blocks on the screw 14 perform intense shearing and mixing on the material, causing the material to reach a certain plasticized state. The plasticized material is then conveyed to the cooling conveying device 2 by the second conveying section 144 on the screw 14. The cooling conveying device 2 continuously and stably conveys the material to the grinding device 3. In the grinding device 3, the material passes through the grinding area between the stationary grinding disc 33 and the moving grinding disc 34 and is ground into powder coating that meets the requirements. The ground powder coating is discharged through the discharge port 311 of the grinding device 3, completing the entire production process.

[0043] The powder coating production device in this embodiment has a reasonable structural design and is easy to use. This structure can also be used for other equipment with similar usage requirements. In this embodiment, the powder coating production device can effectively enhance the shearing force of the screw 14, realize the continuous processing of raw materials and the stable production of powder coatings, and ensure the final performance and quality of powder coatings.

[0044] In the description of the above embodiments, greater than, less than, and more than are understood to exclude the number itself, several and more mean one or more, and above, below, and within are understood to include the number itself. If the first and second are described, they are only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments are merely examples of several implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A powder coating production apparatus, characterized in that, include: Extrusion equipment; A cooling conveying device, wherein the cooling conveying device abuts against the extrusion device; A grinding device, wherein the grinding device abuts against the end of the cooling and conveying device away from the extrusion device; The extrusion device includes a drive mechanism, an extrusion cylinder, a feed hopper, and a screw. The screw is disposed inside the extrusion cylinder. The drive mechanism is fixedly connected to the screw. The feed hopper is disposed on one end of the extrusion cylinder near the drive mechanism and communicates with the extrusion cylinder. The screw is sequentially provided with a connecting section, a first conveying section, a shearing section, and a second conveying section. The connecting section is fixedly connected to the drive mechanism.

2. The powder coating production apparatus according to claim 1, characterized in that, The first conveying section includes a plurality of first spiral blades, each first spiral blade being spirally arranged on the outside of the screw and fixedly connected to the screw. Each first spiral blade is arranged in an arc shape on the side facing the connecting section to form a first arc-shaped surface. Each first spiral blade is arranged perpendicular to the outer surface of the screw on the side facing the shearing section to form a first pushing surface.

3. The powder coating production apparatus according to claim 1, characterized in that, The shearing section includes an initial shearing block, a secondary shearing block, and a final shearing block, which are connected in sequence. The thickness of the initial shearing block, the secondary shearing block, and the final shearing block decreases in sequence. The initial shearing block is located at one end near the first conveying section, and the final shearing block is located at one end near the second conveying section.

4. The powder coating production apparatus according to claim 3, characterized in that, The initial shearing blocks are provided in several units, and the included angle between adjacent initial shearing blocks is greater than 0° and less than 180°.

5. The powder coating production apparatus according to claim 3, characterized in that, The secondary shearing blocks are provided in several units, and the included angle between adjacent secondary shearing blocks is greater than 0° and less than 180°.

6. The powder coating production apparatus according to claim 3, characterized in that, The final shear block is provided in several parts, and the included angle between adjacent final shear blocks is greater than 0° and less than 180°.

7. The powder coating production apparatus according to claim 1, characterized in that, The second feeding section includes a plurality of second spiral blades, each spiral blade being spirally arranged on the outside of the screw and fixedly connected to the screw. Each second spiral blade is arranged in an arc shape on the side facing the shearing section to form a second arc-shaped surface, and each second spiral blade is arranged perpendicular to the outer surface of the screw on the side facing away from the shearing section to form a second propulsion surface.

8. The powder coating production apparatus according to claim 1, characterized in that, The grinding device includes a protective cover, a feed hopper, a stationary grinding disc, a moving grinding disc, and a drive motor. The feed hopper is fixedly connected to the protective cover. The stationary grinding disc is disposed inside the protective cover and movably connected to it. The moving grinding disc is disposed inside the protective cover and rotatably connected to it. A feed inlet is provided in the middle of the stationary grinding disc, and the feed hopper communicates with the feed inlet. The output end of the drive motor is fixedly connected to the moving grinding disc. Several grinding blades are provided on one side of the moving grinding disc near the stationary grinding disc. The grinding blades are detachably connected to the moving grinding disc. A discharge port is provided at the bottom of the protective cover, and the discharge port is located between the stationary grinding disc and the moving grinding disc.

9. The powder coating production apparatus according to claim 8, characterized in that, The sharpening tool includes a first cutting block and a second cutting block. The first cutting block is disposed around the second cutting block, and the height of the first cutting block is greater than the height of the second cutting block. The first cutting block and the second cutting block are spaced apart.

10. The powder coating production apparatus according to claim 8, characterized in that, A sealing element is provided between the outer edge of the stationary grinding disc and the moving grinding disc and the protective cover, and the two sealing elements are respectively fixedly connected to the stationary grinding disc and the moving grinding disc.

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