Heating device for the production of water-based paints

Abstract

This utility model discloses a heating device for the production of water-based coatings, comprising a heating chamber; a heating unit disposed within the heating chamber for heating the water-based coating; a pressure relief unit disposed on the heating chamber for releasing internal air pressure; and a cleaning component disposed on the heating unit. This utility model utilizes the heating unit to heat the water-based coating both internally and externally, preventing heat loss and slow heating in certain areas, thereby improving the heating efficiency. The pressure relief unit releases excessively high air pressure generated during heating in real time, preventing the risk of explosive agglomeration due to gas expansion. Furthermore, the cleaning component, in conjunction with a rotating component, effectively cleans the water-based coating adhering to the inner wall of the equipment, enhances the uniformity of stirring and heating, and eliminates internal air bubbles, preventing pinholes and pitting after the paint film has cured.

Description

Technical Field

[0001] This utility model relates to the technical field of water-based coating production, and in particular to a heating device for water-based coating production. Background Technology

[0002] Water-based coatings are a type of environmentally friendly coating that uses water as a solvent or dispersion medium. They are mainly composed of water-based resins, pigments, fillers, additives, and water. Compared with traditional solvent-based coatings, their biggest feature is that they contain no or only a small amount of organic solvents, and they have advantages such as low VOC emissions, non-toxicity, odorlessness, safety, and environmental protection.

[0003] In the production of water-based coatings, heating processes can control the polymerization rate and ensure the uniform growth and cross-linking of resin molecular chains. In the coating formulation stage, heating can promote the full dispersion of pigments, fillers and additives, and avoid precipitation or flocculation.

[0004] In the existing technology, water-based coatings are mostly heated by direct bottom heating, which causes uneven heat conduction efficiency in some water-based coatings. This results in differences in the degree of curing and resin crosslinking between different batches of coatings, affecting the gloss, adhesion and weather resistance of the film after it is formed. In addition, during the heating process, the steam generated by water evaporation can easily carry resin to form bubbles, resulting in defects such as pinholes and pits in the paint film after the coating is applied. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the problems existing in the current heating equipment for the production of water-based coatings, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a heating device for the production of water-based coatings, which aims to solve the problem that "because water-based coatings are mostly heated by direct bottom heating, some water-based coatings have uneven heat conduction efficiency, resulting in differences in the degree of curing and resin crosslinking between different batches of coatings, affecting the gloss, adhesion and weather resistance of the film after film formation. In addition, during the heating process, the steam generated by water evaporation can easily carry resin to form bubbles, resulting in defects such as pinholes and pits in the paint film after coating application".

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: including:

[0009] Heating box;

[0010] A heating unit is installed inside a heating chamber and is used to heat-treat water-based coatings. A pressure relief unit is installed on the heating chamber and is used to release the internal air pressure of the heating unit.

[0011] A cleaning component is mounted on the heating unit and is used to remove air bubbles from the water-based coating. A rotating component is mounted on the heating box and is used to rotate the cleaning component.

[0012] As a preferred embodiment of the heating equipment for water-based coating production described in this utility model, the heating unit includes a hollow tube rotatably connected to a heating box. A hot air blower is fixedly connected to the top surface of the heating box, and the output end of the hot air blower is movably connected to the top end of the hollow tube. A transfer box is rotatably connected to the bottom end of the hollow tube and is fixedly connected to the bottom surface of the heating box. First conduits are fixedly connected to both sides of the transfer box. Two hollow frames are fixedly connected to the heating box, and the two first conduits are fixedly connected to one of the hollow frames. A second conduit is fixedly connected between the two hollow frames.

[0013] As a preferred embodiment of the heating equipment for water-based coating production described in this utility model, the pressure relief unit includes two U-shaped blocks, which are respectively fixedly connected to the two side surfaces of the heating box. The top surfaces of the two U-shaped blocks are slidably connected to vertical rods. The top ends of the two vertical rods are fixedly connected to stop blocks. The bottom ends of the two vertical rods are fixedly connected to concave cylinders. The two concave cylinders movably pass through one of the hollow frames. The two concave cylinders are provided with exhaust ports. The arms of the two vertical rods are fitted with springs. The two ends of the two springs are respectively fixedly connected to the U-shaped blocks and the concave cylinders.

[0014] In a preferred embodiment of the heating equipment for water-based coating production described in this utility model, the cleaning component includes multiple scrapers, all of which are fixedly connected to a hollow tube, and all of which are movably attached to the inner wall of the heating box. Each of the multiple scrapers is fixedly connected to an intercepting mesh plate.

[0015] In a preferred embodiment of the heating equipment for producing water-based coatings according to this utility model, the rotating component includes a support plate, which is fixedly connected to the top surface of the heating box. A servo motor is fixedly connected to the top surface of the support plate, and a small gear is fixedly connected to the output end of the servo motor. A large gear is fixedly connected to the hollow tube, and the large gear meshes with the small gear.

[0016] In a preferred embodiment of the heating equipment for producing water-based coatings according to this utility model, two sealing rings are fixedly connected to the top inner wall of one of the hollow frames, and both sealing rings are in movable contact with the corresponding concave cylinder.

[0017] In a preferred embodiment of the heating equipment for producing water-based coatings according to this utility model, a material injection pipe is fixedly connected to the heating box, and a valve is fixedly connected to the material injection pipe.

[0018] In a preferred embodiment of the heating equipment for producing water-based coatings according to this utility model, a pressure sensor is provided on the top surface of the heating box, and the detection end of the pressure sensor moves through the heating box.

[0019] The beneficial effects of this utility model are:

[0020] 1. The heating unit can heat the water-based coating from the inside out, avoiding heat loss and slow heating in some areas, thereby improving the heating efficiency of the water-based coating. The pressure relief unit releases the excessive pressure generated by heating in real time, preventing the risk of explosive accumulation caused by gas expansion. In addition, the cleaning component, together with the rotating component, can effectively clean the water-based coating adhering to the inner wall of the equipment, enhance the uniformity of stirring and heating, and eliminate internal air bubbles, so as to avoid pinholes and pits after the paint film is cured. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0022] Figure 1 This is a frontal overall structural diagram of a heating device for producing water-based coatings according to the present invention.

[0023] Figure 2 This is a side view of the overall structure of a heating device for producing water-based coatings according to the present invention.

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the heating box proposed in this utility model;

[0025] Figure 4 for Figure 3 A magnified structural diagram of region A.

[0026] In the picture:

[0027] 100. Heating box; 101. Injection pipe; 102. Pressure sensor;

[0028] 200. Heating unit; 201. Hollow tube; 202. Hot air blower; 203. Transfer box; 204. First conduit; 205. Hollow frame; 206. Second conduit; 2051. Sealing ring;

[0029] 300. Pressure relief unit; 301. U-shaped block; 302. Vertical rod; 303. Stop block; 304. Concave cylinder; 305. Exhaust port; 306. Spring;

[0030] 400. Cleaning component; 401. Scraper; 402. Mesh screen;

[0031] 500, Rotating component; 501, Pallet; 502, Servo motor; 503, Pinion; 504, Large gear. Detailed Implementation

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0035] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0036] Example 1

[0037] Reference Figures 1 to 4 This is the first embodiment of the present utility model, which provides the following achievable effects:

[0038] Heating box 100;

[0039] Heating unit 200 is installed inside heating box 100 and is used for heating water-based coatings. Pressure relief unit 300 is installed on heating box 100 and is used to release the internal air pressure of heating unit 200.

[0040] Cleaning component 400 is mounted on heating unit 200 and is used to clean air bubbles in water-based paint. Rotating component 500 is mounted on heating box 100 and is used to rotate cleaning component 400.

[0041] During use, the heating unit 200 can heat the water-based coating inside and out, preventing heat loss and slow heating in some areas, thereby improving the heating efficiency of the water-based coating. The pressure relief unit 300 discharges the excessive pressure generated by heating in real time to prevent the risk of explosive accumulation caused by gas expansion. In addition, the cleaning component 400, together with the rotating component 500, can effectively clean the water-based coating adhering to the inner wall of the equipment, enhance the uniformity of stirring and heating, and eliminate internal air bubbles to prevent pinholes and pits from appearing after the paint film has cured.

[0042] Example 2

[0043] Reference Figures 1 to 4 This is the second embodiment of the present invention, which differs from the previous embodiment in that...

[0044] The heating unit 200 includes a hollow tube 201, which is rotatably connected inside the heating box 100. A hot air blower 202 is fixedly connected to the top surface of the heating box 100. The output end of the hot air blower 202 is movably connected to the top end of the hollow tube 201. A transfer box 203 is rotatably connected to the bottom end of the hollow tube 201. The transfer box 203 is fixedly connected to the bottom surface of the heating box 100. First conduits 204 are fixedly connected to both sides of the transfer box 203. Two hollow frames 205 are fixedly connected to the heating box 100. The two first conduits 204 are fixedly connected to one of the hollow frames 205. A second conduit 206 is fixedly connected between the two hollow frames 205.

[0045] Hot air is introduced into the transfer box 203 through the hollow tube 201, and then into the hollow frame 205 located on the lower side through the first conduits 204 on both sides. The second conduit 206 allows hot air to be introduced into the upper hollow frame 205, which has a highly efficient internal and external heating effect on water-based coatings and improves their heating uniformity. The hollow tube 201 is rotatably connected to the top and bottom surfaces of the heating box 100 on both sides, and the transfer box 203 is fixed to the heating box 100. The bottom end of the hollow tube 201 rotatably passes through the transfer box 203.

[0046] Specifically, the pressure relief unit 300 includes two U-shaped blocks 301, which are fixedly connected to the two side surfaces of the heating box 100. The top surfaces of the two U-shaped blocks 301 are slidably connected to vertical rods 302. The top ends of the two vertical rods 302 are fixedly connected to stop blocks 303. The bottom ends of the two vertical rods 302 are fixedly connected to concave cylinders 304. The two concave cylinders 304 movably pass through one of the hollow frames 205. The two concave cylinders 304 are provided with exhaust ports 305. The arms of the two vertical rods 302 are fitted with springs 306. The two ends of the two springs 306 are fixedly connected to the U-shaped blocks 301 and the concave cylinders 304, respectively.

[0047] When the air pressure inside the heating unit 200 continues to rise, the excessive air pressure can gradually push the concave cylinder 304 to compress the spring 306, causing the exhaust port 305 to open and release pressure. When the air pressure drops, the spring 306 will reset and drive the concave cylinder 304 to close the hollow frame 205, preventing gas leakage. At the same time, it can be operated manually, which is convenient and quick.

[0048] Specifically, the cleaning component 400 includes multiple scrapers 401, all of which are fixedly connected to the hollow tube 201. The multiple scrapers 401 are in contact with the inner wall of the heating box 100, and each of the multiple scrapers 401 is fixedly connected to an intercepting mesh plate 402.

[0049] The scraper 401, which rotates with the hollow tube 201, scrapes against the inner wall of the heating box 100, removing the adhering paint. At the same time, the intercepting mesh plate 402 uses fine mesh to block rising air bubbles and has a shearing effect on the air bubbles, thereby reducing the air bubble content in the water-based paint.

[0050] Specifically, the rotating assembly 500 includes a support plate 501, which is fixedly connected to the top surface of the heating box 100. A servo motor 502 is fixedly connected to the top surface of the support plate 501. A pinion 503 is fixedly connected to the output end of the servo motor 502. A large gear 504 is fixedly connected to the hollow tube 201, and the large gear 504 meshes with the pinion 503.

[0051] In use, the servo motor 502 drives the pinion 503, which is then reduced in speed and increased in torque by the large gear 504, so that the hollow tube 201 can obtain a stable speed. This allows the cleaning component 400 to agitate the water-based coating during rotation, ensuring its heating effect.

[0052] Example 3

[0053] Reference Figures 1 to 4 This is the third embodiment of the present invention, which differs from the previous embodiment in that...

[0054] Two sealing rings 2051 are fixedly connected to the top inner wall of one of the hollow frames 205, and both sealing rings 2051 are in movable contact with the corresponding concave cylinder 304.

[0055] Under normal conditions, the gap between the concave cylinder 304 and the hollow frame 205 is tightly sealed by elastic deformation to prevent hot gas leakage from the heating box 100. When depressurization occurs, the concave cylinder 304 moves upward against its inner wall to release the gas.

[0056] Specifically, a material injection pipe 101 is fixedly connected to the heating box 100, and a valve is fixedly connected to the material injection pipe 101.

[0057] The injection pipe 101 facilitates the addition of heated and mixed materials, while the valve prevents material overflow.

[0058] Specifically, a pressure sensor 102 is provided on the top surface of the heating box 100, and the detection end of the pressure sensor 102 moves through the heating box 100.

[0059] When in use, the pressure sensor 102 can monitor the pressure inside the heating box 100 in real time to prevent it from being too high and causing danger. The pressure sensor 102 works based on the piezoresistive effect or the capacitive effect. When the external pressure changes and causes it to deform, the resistance value changes. The resistance change is converted into an electrical signal output through a Wheatstone bridge and processed into a digital signal by the circuit. This is existing technology and will not be described in detail in this article.

[0060] During use, the water-based coating enters the heating box 100 through the water inlet pipe, while the air pressure sensor 102 monitors the air pressure inside the box in real time and starts the hot air blower 202 to deliver hot air to the hollow tube 201. Then, it passes through the transfer box 203, the first conduit 204, and the second conduit 206 to the hollow frames 205 on the upper and lower sides, thereby heating the water-based coating inside and out. When the air pressure inside the heating unit 200 increases due to gas expansion and exceeds the set threshold, the air pressure pushes the concave cylinder 304 to move upward against the elastic force of the spring 306, and the exhaust port 305 is exposed. The gas is discharged through the hollow frame 205 to release pressure. After the air pressure drops, the spring 306 resets and pushes the concave cylinder 304 downward. The sealing ring 2051 ensures that the concave cylinder 304 is sealed with the hollow frame 205 to prevent gas leakage.

[0061] Meanwhile, driven by the servo motor 502, the hollow tube 201 rotates by meshing the pinion 503 and the gear 504. The scraper 401 and the intercepting mesh plate 402 fixed on the hollow tube 201 rotate with the hollow tube 201, causing the scraper 401 to stick to the inner wall of the heating box 100 to scrape off the water-based coating. The intercepting mesh plate 402 breaks up the air bubbles in the water-based coating, improving its heating accuracy.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A heating device for producing water-based coatings, characterized in that: include: Heating box (100); A heating unit (200) is installed inside a heating chamber (100) and is used to heat water-based coatings. A pressure relief unit (300) is installed on the heating chamber (100) and is used to release the internal air pressure of the heating unit (200). A cleaning component (400) is disposed on a heating unit (200) and is used to clean air bubbles in water-based coatings. A rotating component (500) is disposed on a heating box (100) and is used to rotate the cleaning component (400).

2. The heating equipment for producing water-based coatings according to claim 1, characterized in that: The heating unit (200) includes a hollow tube (201) which is rotatably connected to the heating box (100). A hot air blower (202) is fixedly connected to the top surface of the heating box (100). The output end of the hot air blower (202) is movably connected to the top end of the hollow tube (201). A transfer box (203) is rotatably connected to the bottom end of the hollow tube (201). The transfer box (203) is fixedly connected to the bottom surface of the heating box (100). First conduits (204) are fixedly connected to both sides of the transfer box (203). Two hollow frames (205) are fixedly connected to the heating box (100). The two first conduits (204) are fixedly connected to one of the hollow frames (205). A second conduit (206) is fixedly connected between the two hollow frames (205).

3. The heating equipment for producing water-based coatings according to claim 2, characterized in that: The pressure relief unit (300) includes two U-shaped blocks (301), which are fixedly connected to the two side surfaces of the heating box (100). The top surfaces of the two U-shaped blocks (301) are slidably connected to vertical rods (302). The top ends of the two vertical rods (302) are fixedly connected to stop blocks (303). The bottom ends of the two vertical rods (302) are fixedly connected to concave cylinders (304). The two concave cylinders (304) movably pass through one of the hollow frames (205). The two concave cylinders (304) are provided with exhaust ports (305). The arms of the two vertical rods (302) are fitted with springs (306). The two ends of the two springs (306) are fixedly connected to the U-shaped blocks (301) and the concave cylinders (304) respectively.

4. The heating equipment for producing water-based coatings according to claim 3, characterized in that: The cleaning assembly (400) includes multiple scrapers (401), each of which is fixedly connected to the hollow tube (201). Each of the multiple scrapers (401) is in contact with the inner wall of the heating box (100), and each of the multiple scrapers (401) is fixedly connected to an intercepting mesh plate (402).

5. The heating equipment for producing water-based coatings according to claim 4, characterized in that: The rotating assembly (500) includes a support plate (501), which is fixedly connected to the top surface of the heating box (100). A servo motor (502) is fixedly connected to the top surface of the support plate (501). A pinion (503) is fixedly connected to the output end of the servo motor (502). A large gear (504) is fixedly connected to the hollow tube (201), and the large gear (504) meshes with the pinion (503).

6. The heating equipment for producing water-based coatings according to claim 5, characterized in that: Two sealing rings (2051) are fixedly connected to the top inner wall of one of the hollow frames (205), and both sealing rings (2051) are movably fitted with the corresponding concave cylinder (304).

7. The heating equipment for producing water-based coatings according to claim 6, characterized in that: The heating box (100) is fixedly connected to a material injection pipe (101), and a valve is fixedly connected to the material injection pipe (101).

8. The heating equipment for producing water-based coatings according to claim 7, characterized in that: A pressure sensor (102) is provided on the top surface of the heating box (100), and the detection end of the pressure sensor (102) moves through the heating box (100).

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