A paint heater for a paint production line

Abstract

The application relates to the technical field of paint production equipment, in particular to a paint heater for a paint production line, which comprises a heating tank, a paint circulating mechanism is arranged in the tank, the paint circulating mechanism can move paint at the bottom of the heating tank to the upper part of the heating tank, a crushing assembly is arranged in the paint circulating mechanism, the crushing assembly can crush the agglomerates in the circulating material, the paint circulating mechanism comprises coaxially arranged upper and lower circulating cylinders, a feeding port is arranged at the bottom of the lower circulating cylinder, and a discharging port is arranged at the top of the upper circulating cylinder, the upper circulating cylinder is driven by a first driving mechanism, the lower circulating cylinder is driven by a second driving mechanism, and a screw conveyor is coaxially and rotationally connected to the inner cavities of the upper and lower circulating cylinders. The application can improve the heating efficiency of paint.

Description

Technical Field

[0001] This application relates to the technical field of coating production equipment, and in particular to a coating heater for a coating production line. Background Technology

[0002] Paint heaters are an essential piece of equipment in the paint production process. During storage and transportation, paint is prone to clumping due to low temperatures or prolonged storage, affecting its quality and performance. Existing paint heaters suffer from uneven heating and poor flowability when processing clumped paint, significantly reducing heating efficiency.

[0003] A search revealed Chinese Patent Publication No. CN222670349U, which discloses a stirless self-circulating heater. The heater includes a tank with an open top and a cover plate for sealing the top of the tank. The tank's interior is isolated and divided into an upper feeding zone and a lower circulating heating zone. The circulating heating zone contains a discharge box and a coating pipe. One end of the coating pipe connects to the feeding zone, and the other end connects to the interior of the discharge box. The discharge box has a discharge port that communicates with the outside of the tank. A medium zone exists between the discharge box and the tank, which contains and allows the medium to flow. A heating component is located on one side of the circulating heating zone. The tank has an air outlet, a liquid outlet, and a liquid inlet.

[0004] Regarding the aforementioned related technologies, the inventors discovered the following drawbacks: coatings are prone to clumping during storage and transportation, which reduces their heating efficiency. To address the problem of clumping affecting heating efficiency in the prior art, this application improves the heating efficiency of the coating by conveying the material from the bottom of the heating tank to the top and breaking up any clumped material during the conveying process. Utility Model Content

[0005] In order to improve the heating efficiency of coatings, this application provides a coating heater for a coating production line.

[0006] This application provides a paint heater for a paint production line, employing the following technical solution: It includes a heating tank, within which a paint circulation mechanism is installed, capable of moving paint from the bottom of the heating tank to the upper part; the paint circulation mechanism includes a crushing component, capable of crushing lumps in the circulating material; the paint circulation mechanism comprises an upper circulation cylinder and a lower circulation cylinder coaxially arranged; the lower circulation cylinder has an inlet at its bottom and an outlet at its top; the upper circulation cylinder is driven by a first driving mechanism, and the lower circulation cylinder is driven by a second driving mechanism; an auger is coaxially rotatably connected to the inner cavities of the upper and lower circulation cylinders; the paint from the bottom of the heating tank is transported to the upper part of the heating tank via the paint circulation mechanism, and the crushing component crushes the lumps in the paint.

[0007] Optionally, the first drive mechanism includes a stand mounted on the heating tank, on which a first motor is mounted; a first drive shaft is coaxially mounted on the upper circulation cylinder; and a second drive shaft coaxial with the first drive shaft is mounted on the auger.

[0008] Optionally, the output shaft of the first motor is provided with a first bevel gear; the first transmission shaft and the second transmission shaft are respectively provided with a second bevel gear and a third bevel gear that can mesh with the first bevel gear; the first motor drives the upper circulation cylinder to rotate through the first bevel gear and the second bevel gear.

[0009] Optionally, the second transmission mechanism includes a second motor disposed at the bottom of the heating tank, the output shaft of the second motor being coaxially and fixedly connected to the lower circulation drum; the second motor drives the lower circulation drum to rotate.

[0010] Optionally, both the upper and lower circulation cylinders are provided with stirring blades on their outer walls.

[0011] Optionally, the crushing assembly includes a first grinding disc disposed on the upper circulation cylinder and a second grinding disc disposed on the second transmission shaft. The first grinding disc is provided with an array of multiple first grinding teeth and a first material passage hole. The first and second grinding discs, which rotate in opposite directions, crush the material.

[0012] Optionally, the second grinding disc is arrayed with multiple second grinding teeth and a second material passage hole, the diameter of the second material passage hole being larger than the diameter of the first material passage hole.

[0013] Optionally, the paint circulation mechanism further includes a feeding assembly; the feeding assembly includes a sleeve disposed with the upper circulation cylinder, the upper end face of the sleeve being rotatably connected to the lower end face of the upper circulation cylinder, and the lower end face of the sleeve being rotatably connected to the upper end face of the lower circulation cylinder.

[0014] Optionally, the sleeve is further provided with a material conveying pipe, one end of which is connected to the inner cavity of the sleeve, and the other end of which is connected to a material conveying pump.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] 1. This utility model uses the coordinated rotation of the upper and lower circulation cylinders and the auger to force the low-temperature or clumped coating at the bottom of the heating tank to the high-temperature area at the top, forming a closed-loop flow of "bottom suction → circulation rise → top fall", which solves the problems of coating retention and uneven heating at the bottom of traditional heaters.

[0017] 2. This utility model uses the counter-rotation of the first and second grinding discs to generate a grinding force, which breaks the agglomerated coating into fine particles; larger agglomerated particles first enter the grinding space through the second feed hole, and after crushing, only qualified fine particles pass through the first feed hole, ensuring thorough crushing and avoiding blockage by large particles.

[0018] 3. The feeding component of this utility model uses a feeding pump to inject solvents and other auxiliary materials into the sleeve through a feeding pipe. It utilizes fluid pressure to improve the flowability of materials in the coating circulation mechanism, thereby ensuring continuous operation of the equipment and reducing the risk of blockage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the internal structure of the heating tank in an embodiment of this application;

[0021] Figure 3 This is a partial structural diagram of the auger in an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the structure of the first grinding disc in the embodiments of this application;

[0023] Figure 5 This is a schematic diagram of the structure of the second grinding disc in the embodiments of this application.

[0024] Reference numerals in the attached diagram: 1. Heating tank; 2. Upper circulation cylinder; 3. Lower circulation cylinder; 4. Feed inlet; 5. Discharge outlet; 6. Screw conveyor; 7. Vertical frame; 8. First motor; 9. First drive shaft; 10. Second drive shaft; 11. First bevel gear; 12. Second bevel gear; 13. Third bevel gear; 14. Second motor; 15. Stirring blade; 16. First grinding disc; 17. Second grinding disc; 18. First grinding tooth; 19. First material passage hole; 20. Second grinding tooth; 21. Second material passage hole; 22. Sleeve; 23. Conveying pipe. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-5This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] This application discloses a paint heater for a paint production line. For example... Figure 1 As shown, the device includes a heating tank 1 equipped with a heating device. A paint circulation mechanism is installed inside the tank, capable of moving paint from the bottom of the heating tank to the upper part of the heating tank 1. A crushing component is installed within the paint circulation mechanism, capable of crushing lumps in the circulating material. The paint circulation mechanism includes an upper circulation cylinder 2 and a lower circulation cylinder 3 coaxially arranged. An inlet 4 is located at the bottom of the lower circulation cylinder 3, and an outlet 5 is located at the top of the upper circulation cylinder 2. The upper circulation cylinder 2 is driven by a first driving mechanism, and the lower circulation cylinder 3 is driven by a second driving mechanism. An auger 6 is coaxially rotatably connected to the inner cavities of the upper circulation cylinder 2 and the lower circulation cylinder 3.

[0027] In this embodiment, the upper circulation cylinder 2 and the lower circulation cylinder 3 rotate in the same direction, while the auger 6 rotates in the opposite direction to the upper circulation cylinder 2. The rotation of the auger 6 can draw the coating material at the bottom of the heating tank 1 into the feed port 4 at the bottom of the lower circulation cylinder 3 and discharge it from the discharge port 5 at the top of the upper circulation cylinder 2. During the circulation process, the crushing component can also crush the agglomerated coating material, thereby improving the heating efficiency of the coating material.

[0028] Please see Figure 1 The first drive mechanism includes a stand 7 mounted on the heating tank 1, on which a first motor 8 is mounted; a first transmission shaft 9 is coaxially mounted on the upper circulation cylinder 2; a second transmission shaft 10 coaxial with the first transmission shaft 9 is mounted on the auger 6; a first bevel gear 11 is mounted on the output shaft of the first motor 8; and a second bevel gear 12 and a third bevel gear 13 capable of meshing with the first bevel gear 11 are respectively mounted on the first transmission shaft 9 and the second transmission shaft 10.

[0029] In this embodiment, the first motor 8 drives the second bevel gear 12 to rotate through the meshing of the first bevel gear 11, thereby driving the first transmission shaft 9 and the upper circulation cylinder 2 to rotate;

[0030] The first motor 8 drives the third bevel gear 13 to rotate through the meshing of the first bevel gear 11, thereby driving the second transmission shaft 10 and the auger 6 to rotate.

[0031] Please see Figure 2The second transmission mechanism includes a second motor 14 disposed at the bottom of the heating tank 1, and the output shaft of the second motor 14 is coaxially and fixedly connected to the lower circulation cylinder 3; the outer walls of the upper circulation cylinder 2 and the lower circulation cylinder 3 are both provided with stirring blades 15;

[0032] In this embodiment, the lower circulation cylinder 3 is driven to rotate by the second motor 14, thereby causing the corresponding stirring blades 15 to rotate.

[0033] Please see Figure 3 The crushing assembly includes a first grinding disc 16 disposed on the upper circulation cylinder 2 and a second grinding disc 17 disposed on the second transmission shaft 10. The first grinding disc 16 is provided with an array of multiple first grinding teeth 18 and a first material passage hole 19. The second grinding disc 17 is provided with an array of multiple second grinding teeth 20 and a second material passage hole 21. The diameter of the second material passage hole 21 is larger than the diameter of the first material passage hole 19.

[0034] In this embodiment, since the upper circulation cylinder 2 and the auger 6 rotate in opposite directions, the first grinding disc 16 and the second grinding disc 17 rotate in opposite directions. During the upward process, the material enters the space between the first grinding disc 16 and the second grinding disc 17 through the second material passage hole 21 on the second grinding disc 17. After being ground by the first grinding disc 16 and the second grinding disc 17, it enters the upper space of the upper circulation cylinder 2 through the first material passage hole 19.

[0035] Please see Figure 3 The paint circulation mechanism further includes a feeding assembly; the feeding assembly includes a sleeve 22 disposed with the upper circulation cylinder 2, the upper end face of the sleeve 22 being rotatably connected to the lower end face of the upper circulation cylinder 2, and the lower end face of the sleeve 22 being rotatably connected to the upper end face of the lower circulation cylinder 3; the sleeve 22 is also provided with a conveying pipe 23, one end of the conveying pipe 23 being connected to the inner cavity of the sleeve 22, and the other end of the conveying pipe 23 being connected to a conveying pump;

[0036] In this embodiment, the conveying pipe 23 is made of rigid material; the auxiliary material is injected into the sleeve 22 by the conveying pump, and the additional fluid pressure generated by the conveying pump pushes the material to pass quickly through the second material passage 21 and the first material passage 19, thereby reducing the risk of blockage of the first material passage 19 and the second material passage 21.

[0037] The implementation principle of a paint heater for a paint production line according to an embodiment of this application is as follows:

[0038] The first motor 8 drives the second bevel gear 12 to rotate through the meshing of the first bevel gear 11, thereby driving the first transmission shaft 9, the upper circulation cylinder 2, the first grinding disc 16, and the corresponding stirring blades 15 to rotate; the first motor 8 drives the third bevel gear 13 to rotate through the meshing of the first bevel gear 11, thereby driving the second transmission shaft 10, the auger 6, and the second grinding disc 17 to rotate; the second motor 14 drives the lower circulation cylinder 3 to rotate, thereby causing the corresponding stirring blades 15 to rotate;

[0039] The paint is conveyed upward by the spiral motion of the auger 6, and enters the upper part of the heating tank 1 through the path of the lower circulation cylinder 3, the sleeve 22, and the upper circulation cylinder 2;

[0040] The stirring blades 15 on the outer walls of the upper circulation cylinder 2 and the lower circulation cylinder 3 rotate synchronously to stir the coating in the heating tank 1, and the heating device in the heating tank 1 achieves uniform heating.

[0041] When the agglomerated coating rises to the inner cavity of the upper circulation cylinder 2 with the auger 6, it first enters the grinding space between the first grinding disc 16 and the second grinding disc 17 through the second material passage 21 (larger diameter) of the second grinding disc 17.

[0042] The first grinding tooth 18 and the second grinding tooth 20, which rotate in opposite directions, rub against each other, breaking the clumps into fine particles.

[0043] The crushed coating enters the upper part of the upper circulation cylinder 2 through the first material passage 19 (smaller diameter) of the first grinding disc 16, ensuring that only coatings of qualified particle size participate in circulation or are discharged;

[0044] The feeding pump of the feeding assembly injects auxiliary materials (such as solvents) into the sleeve 22 through the feeding pipe 23. The fluid pressure is used to push the material through the feed hole quickly, reducing the risk of blockage caused by excessively large agglomerated particles.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A paint heater for a paint production line comprising a heating tank, characterised in that: The tank is equipped with a paint circulation mechanism that moves the paint from the bottom of the heating tank to the top. The paint circulation mechanism also includes a crushing component that breaks up any lumps in the circulating material. The paint circulation mechanism comprises an upper circulation cylinder and a lower circulation cylinder arranged coaxially. The lower circulation cylinder has an inlet at its bottom and an outlet at its top. The upper circulation cylinder is driven by a first driving mechanism, and the lower circulation cylinder is driven by a second driving mechanism. The inner cavities of the upper and lower circulation cylinders are coaxially rotatably connected by an auger.

2. A paint heater for a paint production line according to claim 1, characterized in that: The first drive mechanism includes a stand mounted on the heating tank, on which a first motor is mounted; a first drive shaft is coaxially mounted on the upper circulation cylinder; and a second drive shaft coaxial with the first drive shaft is mounted on the auger.

3. A paint heater for a paint production line according to claim 2, characterized in that: The output shaft of the first motor is provided with a first bevel gear; the first transmission shaft and the second transmission shaft are respectively provided with a second bevel gear and a third bevel gear that can mesh with the first bevel gear.

4. A paint heater for a paint production line according to claim 1, characterized in that: The second drive mechanism includes a second motor disposed at the bottom of the heating tank, and the output shaft of the second motor is coaxially and fixedly connected to the lower circulation cylinder.

5. A paint heater for a paint production line according to claim 3, characterized in that: Both the upper and lower circulation cylinders are equipped with stirring blades on their outer walls.

6. A paint heater for a paint production line according to claim 1, characterized in that: The crushing assembly includes a first grinding disc disposed on the upper circulation cylinder and a second grinding disc disposed on the second transmission shaft. The first grinding disc is provided with an array of multiple first grinding teeth and first material passage holes.

7. A paint heater for a paint production line according to claim 6, characterized in that: The second grinding disc is arrayed with multiple second grinding teeth and second material passage holes, the diameter of the second material passage hole being larger than the diameter of the first material passage hole.

8. A paint heater for a paint production line according to claim 1, characterized in that: The paint circulation mechanism also includes a feeding assembly; the feeding assembly includes a sleeve that cooperates with the upper circulation cylinder, the upper end face of the sleeve is rotatably connected to the lower end face of the upper circulation cylinder, and the lower end face of the sleeve is rotatably connected to the upper end face of the lower circulation cylinder.

9. A paint heater for a paint production line according to claim 8, characterized in that: The sleeve is also provided with a material conveying pipe, one end of which is connected to the inner cavity of the sleeve, and the other end of which is connected to a material conveying pump.

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