Paint thermostatic heating device
By combining water bath heating and magnetic stirring components, the problems of low heating efficiency and high energy consumption of paint are solved, achieving stable temperature control and uniform heating of paint, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGXI SHIPYARD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-06-09
AI Technical Summary
Existing paint heating methods are inefficient and energy-intensive, and cannot effectively eliminate internal crystallization in paint, resulting in low construction efficiency.
A water bath heating method is adopted, combined with a magnetic stirring component and a heat preservation structure. Constant temperature heating is achieved through a temperature detection and control system to ensure that the paint temperature is stable at 65℃, and the high thermal conductivity of water is used to eliminate crystallization.
It improves heating efficiency, saves electricity, ensures uniform heating of paint, reduces paint heating costs, and meets construction requirements.
Smart Images
Figure CN224340346U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of paint heating technology, and in particular to a paint constant temperature heating device. Background Technology
[0002] Paint is a chemical mixture coating, typically based on resin, oil, or emulsion, with or without pigments and fillers, and appropriate additives, formulated with organic solvents or water to form a viscous liquid. Its main function is to firmly cover the surface of objects, providing protection, decoration, marking, and other special purposes. Paints can be classified into various types according to their application and composition, such as water-based paints, oil-based paints, and latex paints. Paint viscosity changes significantly with temperature. High viscosity at low temperatures leads to poor flowability, making it difficult to pump and spray evenly. Heating reduces viscosity, making the paint easier to work with, especially suitable for fine spraying processes. In cold weather or low-temperature environments, paint tends to thicken; heating can quickly restore its flowability, ensuring efficient application. To prevent paint from thickening at low temperatures and to eliminate internal crystallization in certain special paints, paint requires heat treatment and must be maintained within a constant temperature range to meet the process requirements of paint application.
[0003] Currently, the most common method for heating paint is to use a heating fan to heat the air, thereby raising the temperature of the paint storage space and thus the paint temperature. This heating method has a long heating time, low heating efficiency, and high energy consumption. Furthermore, using a heating fan to heat paint can only prevent the paint from thickening at low temperatures, but it cannot eliminate internal crystallization in the paint, which has certain limitations. In addition, the paint is prone to uneven heating. Utility Model Content
[0004] Technical problems to be solved:
[0005] To address the shortcomings of existing technologies, this utility model provides a constant temperature heating device for paint, which uses a water bath heating method instead of conventional heating fan heating. Since water has a higher thermal conductivity than air, the constant temperature heating device can effectively solve the problem of paint thickening at low temperatures. Compared with the time and power consumption of air heating, the heating efficiency of the water bath heating method is effectively improved, thereby saving power consumption, reducing the cost of paint heating, and solving the technical problems mentioned in the background art.
[0006] Technical solution:
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A constant temperature heating device for paint includes a housing. An installation bracket is welded inside the housing, and two sets of heating tubes are mounted on the bracket. A temperature detection probe is installed on one inner wall of the housing. A thermostat and a control box are installed on the outer side of the housing. A magnetic stirring assembly is installed at the bottom of the housing. Cover plates are hinged to both sides of the upper end of the housing. A partition and a sealing assembly are built into the housing, with the sealing assembly located above the partition. Multiple slots are formed on the partition. The control box contains a contactor, a time relay, and a power module. A PT100 temperature detection probe converts the water temperature signal into an electrical signal and transmits it to the thermostat. The thermostat compares the water temperature signal with an internal set temperature and adjusts the output control signal based on internal PID data. This control signal controls two sets of contactors, which supply 380V main power to the two sets of heating tubes to heat the water, maintaining a stable temperature of 65℃.
[0009] In one possible implementation, the magnetic stirring assembly includes a fixed box and a stirring rotor. An electric motor is installed inside the fixed box, and the output shaft of the electric motor is fixedly connected to a magnet. The stirring rotor is located at the bottom of the box interior, and the magnet is located at the bottom of the box exterior. When the electric motor operates, it drives the magnet at one end to rotate. Utilizing the properties of magnetic fields—like poles repel and unlike poles attract—when the magnet rotates under the drive of the electric motor, the stirring rotor is acted upon by the rotating magnetic field, causing it to move in a circular motion within the box. This circular motion of the stirring rotor effectively stirs the heating water within the box, forces liquid convection, reduces temperature gradients, and improves heating uniformity.
[0010] In one possible implementation, mounting lugs are welded to both sides of the fixing box, and mounting holes are provided on the mounting lugs. The fixing box is fixedly connected to the box body by screws, the motor is installed and fixed inside the fixing box, and the fixing box is installed and fixed at the bottom of the box body.
[0011] In one possible implementation, the cover plate is provided in two sets, and a handle is welded and fixed on each set of the cover plate. A safety valve is installed on one set of the cover plate. One end of the cover plate is hinged to the box body. After the paint bucket is placed inside the box body, if the height of the paint bucket does not exceed the height of the box body, the two sets of cover plates can close smoothly. When the paint bucket is heated, the two sets of cover plates seal the box body to reduce heat loss and save energy.
[0012] In one possible implementation, rollers are installed at the corners of the lower end face of the housing, and the rollers are fixedly connected to the housing by screws, which enables the entire heating device to be quickly moved to a designated position for use, making it convenient to adjust the position of the entire heating device and to transport it.
[0013] In one possible implementation, a drain pipe is provided on the lower end face of the box, and a valve is installed on the drain pipe. When the valve is opened, the passage of the drain pipe is opened, and the water inside the box can be discharged through the drain pipe. When the valve is closed, the passage of the drain pipe is closed.
[0014] In one possible implementation, limit plates are welded and fixed to the inner walls of both sides of the box. The limit plates are used to support the partition. The position of the partition is higher than the heating pipe and the stirring rotor. A clearance groove is opened on the partition to avoid the temperature detection probe. The partition can be moved in and out. The paint bucket is supported by the partition. The heating water overflows through multiple sets of slots to heat the paint bucket in a water bath.
[0015] In one possible implementation, both the enclosure and the cover plate include a first steel plate and a second steel plate, with a polyurethane insulation layer provided between the first steel plate and the second steel plate. The steel plate and the polyurethane insulation layer together constitute the thin-walled structure of the enclosure and the cover plate structure, and both the enclosure and the cover plate have the function of heat preservation.
[0016] In one possible implementation, the sealing assembly includes a fixed frame fixedly mounted on the inner wall of the housing. An elastic layer is fixedly connected to the inner side of the fixed frame, and an elastic ring is fixedly connected to the inner ring of the elastic layer. When a paint bucket is placed inside, both the elastic layer and the elastic ring undergo corresponding elastic deformation, causing the inner elastic ring to adhere tightly to the outer surface of the paint bucket, thus forming a sealed structure in the water bath heating chamber of the housing. When the height of the paint bucket is higher than the height of the housing, the cover cannot be closed normally, and the water bath heating chamber is sealed by the sealing assembly.
[0017] In one possible implementation, the elastic ring of the sealing assembly forms an opening, through which the paint bucket is inserted, placed on a partition, and located inside the housing.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] 1. This utility model uses water bath heating instead of conventional heating fan heating, which is more energy-efficient. The constant temperature heating device for paint can stably control the temperature at the set temperature of 65℃ with a temperature deviation within 1℃. It can effectively eliminate the internal crystallization of a certain special paint and achieve the optimal process conditions for paint use. Since the heat conduction efficiency of water is higher than that of air, the use of constant temperature heating device can effectively solve the problem of paint thickening at low temperature. Compared with the time and power consumption of air heating, the heating efficiency of water bath heating is effectively improved, thereby saving power consumption and reducing the cost of paint heating.
[0020] 2. This utility model adds a magnetic stirring assembly to the bottom of the box. When the motor of the magnetic stirring assembly is working, it drives the magnet at one end to rotate. Utilizing the properties of like poles repelling and unlike poles attracting in magnetic fields, when the magnet rotates under the drive of the motor, the stirring rotor is subjected to the rotating magnetic field and thus makes a circular motion in the box. The circular motion of the stirring rotor can effectively stir the heating water in the box, force convection of the liquid, reduce the temperature gradient, improve the heating uniformity, and thus achieve uniform heating of the paint, avoiding local overheating.
[0021] 3. In this utility model, after the paint bucket is placed inside the box, if the height of the paint bucket does not exceed the height of the box, the two sets of cover plates can close smoothly. When the paint bucket is heated, the two sets of cover plates seal the box. When the height of the paint bucket is higher than the height of the box, the cover plates cannot close normally. The sealing component seals the water bath heating chamber, reducing heat loss and saving energy.
[0022] 4. The steel plate and polyurethane insulation layer of this utility model together constitute the thin-walled structure of the box and the cover plate structure. Both the box and the cover plate have the function of heat preservation. The polyurethane insulation layer reduces heat loss due to its low thermal conductivity, thereby reducing heat loss and saving energy. Attached Figure Description
[0023] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0024] Figure 1 This is a top view of the overall structure of this utility model;
[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention from a bottom view.
[0026] Figure 3 This is a top view of the structure of this utility model after the sealing components have been removed;
[0027] Figure 4 This is a top view of the structure of the present invention after removing the sealing components and the partition plate;
[0028] Figure 5 This is a cross-sectional view of the present invention;
[0029] Figure 6 for Figure 5 Enlarged view of a portion of area A in the middle;
[0030] Figure 7 This is a schematic diagram of the structure of the magnetic stirring assembly of this utility model;
[0031] Figure 8 This is a schematic diagram of the structure of the partition of this utility model;
[0032] Figure 9 This is a structural schematic diagram of the box body and cover plate of this utility model;
[0033] Figure 10 This is a schematic diagram of the sealing assembly of this utility model.
[0034] In the diagram: 1. Box body; 2. Heating element; 3. Temperature detection probe; 4. Thermostat; 5. Control box; 6. Cover plate; 7. Magnetic stirring assembly; 8. Partition plate; 9. Sealing assembly; 11. Roller; 12. Limiting plate; 13. Drain pipe; 14. Valve; 15. First steel plate; 16. Second steel plate; 17. Polyurethane insulation layer; 61. Safety valve; 62. Handle; 71. Fixing box; 72. Motor; 73. Magnet; 74. Stirring rotor; 75. Mounting lug; 81. Groove; 91. Fixing frame; 92. Elastic layer; 93. Elastic ring; 94. Opening. Detailed Implementation
[0035] This application provides a constant temperature heating device for paint, which uses a water bath heating method instead of conventional heating fan heating. Since the heat conduction efficiency of water is higher than that of air, the use of a constant temperature heating device can effectively solve the problem of paint thickening at low temperatures. Compared with the time and power consumption of air heating, the heating efficiency of water bath heating is effectively improved, thereby saving power consumption, reducing the cost of paint heating, and solving the technical problems mentioned in the background art.
[0036] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:
[0037] Example 1:
[0038] Please see Figure 1-10This utility model provides a technical solution: a constant temperature heating device for paint, including a housing 1. An installation bracket is welded inside the housing 1, and heating tubes 2 are installed on the bracket. Two sets of heating tubes 2 are provided. A temperature detection probe 3 is installed on the inner wall of one side of the housing 1, which monitors and collects the water temperature in real time. A thermostat 4 and a control box 5 are installed on the outer surface of the housing 1, enabling precise temperature control. A magnetic stirring assembly 7 is installed at the bottom of the housing 1 to stir the heating water. To improve heating efficiency and prevent localized overheating, cover plates 6 are hinged to both sides of the upper end of the housing 1. The housing 1 contains a partition plate 8 and a sealing component 9, with the sealing component 9 located above the partition plate 8. The partition plate 8 has multiple sets of slots 81, which are evenly distributed. Heating water overflows through the multiple sets of slots 81. The partition plate 8 is used to support the paint bucket. The control box 5 contains a contactor, a time relay, and a power module. The power module is a 380V main power supply. The temperature detection probe 3, the temperature controller 4, the contactor, the time relay, and the power module are electrically connected.
[0039] Heating element 2 is a 380V 12KW 304 stainless steel unit used as the heating element. The main circuit uses a 63A three-phase leakage protection device paired with a Chint 6511 contactor. Heating time control uses an Omron H3Y series time relay. A PT100 temperature sensor 3 is used to collect water temperature data. A Huifeng XMTD7000 intelligent PID temperature controller 4 is used. Precise temperature control is achieved by setting the PID parameters. To achieve constant temperature control, the PID parameters of the temperature controller 4 need to be adjusted according to the actual situation. P—proportional adjustment—generates response speed and strength. Too small a setting results in a slow response, while too large a setting causes oscillation. It is the basis for I and D parameters. First, I and D are set to 0, and P... The parameters were gradually increased from small to large until the output of temperature controller 4 oscillated. Then, the parameters were gradually decreased until the output stabilized. At this point, the P parameter was fixed at 25. I - integral adjustment, eliminates deviations and improves accuracy under system errors and external forces, resulting in steady-state output. However, it also increases the response speed and causes overshoot. If the parameter is set too high, it will cause oscillation. The adjustment of I is the opposite of P, adjusting the parameter from large to small until the output is stable. Finally, the I parameter is 0.2. D - derivative adjustment, suppresses overshoot and oscillation. If the parameter is too small, it cannot suppress overshoot. If it is too large, it will slow down the response speed. The adjustment of D is similar to I, adjusting the parameter from large to small until oscillation and overshoot are controlled within a suitable range. The final value is 0.6. During heating, the temperature stabilizes at 64.5-65.2℃, meeting the process requirements.
[0040] Heated water is pre-introduced into the chamber 1. The paint bucket is placed directly inside the chamber 1 and heated by a water bath. The paint inside the bucket is heated by the water bath. The PT100 temperature sensor 3 converts the water temperature signal into an electrical signal and transmits it to the temperature controller 4. The temperature controller 4 compares the water temperature signal with the internal set temperature and adjusts the output control signal through internal PID data. This control signal controls two sets of contactors, which supply 380V main power to two sets of heating tubes 2 to heat the water. During the heating phase, the temperature controller 4 controls both sets of heating tubes 2 to heat simultaneously. During the constant temperature phase, the temperature controller 4 only needs to control one set of heating tubes 2 for constant temperature heating. The paint constant temperature heating device can stably control the temperature at the set temperature of 65℃, with a temperature deviation within 1℃. It can effectively eliminate the internal crystallization of a certain special paint and achieve the optimal process conditions for paint use.
[0041] In some examples, the magnetic stirring assembly 7 includes a fixed box 71 and a stirring rotor 74. The heated water is stirred by driving the stirring rotor 74 to rotate. An electric motor 72 is installed inside the fixed box 71. The output shaft of the electric motor 72 is fixedly connected to a magnet 73. The stirring rotor 74 is located at the bottom inside the box 1, and the magnet 73 is located at the bottom outside the box 1.
[0042] A magnetic stirring rotor 74 is placed at the bottom of the housing 1. When the motor 72 is working, it drives the magnet 73 at one end to rotate. Utilizing the properties of magnetic fields that like poles repel and unlike poles attract, when the magnet 73 rotates under the drive of the motor 72, the stirring rotor 74 is affected by the rotating magnetic field and thus makes a circular motion inside the housing 1. The circular motion of the stirring rotor 74 can effectively stir the heating water inside the housing 1, force convection of the liquid, reduce the temperature gradient, improve the heating uniformity, and thus achieve uniform heating of the paint, avoiding local overheating.
[0043] In some examples, mounting lugs 75 are welded and fixed on both sides of the fixed box 71. Mounting lugs 75 have mounting holes. The fixed box 71 is fixedly connected to the box body 1 by screws. The motor 72 is installed and fixed inside the fixed box 71. The fixed box 71 is installed and fixed at the bottom of the box body 1. The magnetic stirring assembly 7 is detachable from the box body 1, which facilitates the maintenance of the magnetic stirring assembly 7.
[0044] In some examples, there are two sets of cover plates 6, each with a handle 62 welded to it. One set of cover plates 6 is equipped with a safety valve 61. One end of the cover plate 6 is hinged to the housing 1, and the cover plate 6 can rotate along the hinge.
[0045] After the paint bucket is placed inside the box 1, if the height of the paint bucket does not exceed the height of the box 1, the two sets of cover plates 6 can close smoothly. When heating the paint bucket, the two sets of cover plates 6 seal the box 1 to reduce heat loss and save energy. The handle 62 facilitates the opening and closing of the two sets of cover plates 6. During the heating process, the water will expand in volume and partially vaporize due to the increased temperature. The safety valve 61 can automatically release pressure to improve the safety of the paint heating process.
[0046] In some examples, rollers 11 are installed at the corners of the lower end face of the housing 1, and the rollers 11 are fixedly connected to the housing 1 by screws.
[0047] The rollers 11 are provided in four sets, which are used as support legs. The rollers 11 facilitate the movement of the entire heating device, enabling the entire heating device to be quickly moved to a designated position for use. The position adjustment of the entire heating device is convenient, and the transportation is convenient.
[0048] In some examples, a drain pipe 13 is provided on the lower end face of the housing 1, and a valve 14 is installed on the drain pipe 13. When the valve 14 is opened, the passage of the drain pipe 13 is opened, and the water inside the housing 1 can be discharged through the drain pipe 13. When the valve 14 is closed, the passage of the drain pipe 13 is closed, and the water inside the housing 1 cannot be discharged. The water can be discharged through the drain pipe 13, and the heating water can be replaced, which is convenient.
[0049] In some examples, limit plates 12 are welded and fixed to the inner walls on both sides of the housing 1. The limit plates 12 are used to support the partition 8.
[0050] The baffle 8 is positioned higher than the heating tube 2 and the stirring rotor 74, such as Figure 8 As shown, a clearance groove is provided on the partition 8 to avoid the temperature detection probe 3. The partition 8 can be moved in and out. When heating the paint, the partition 8 is placed first, and two sets of limiting plates 12 support the partition 8 and limit the height of the partition 8. Then, the paint bucket is placed on the partition 8. The partition 8 supports the paint bucket, and the heating water overflows through multiple sets of slots 81 to heat the paint bucket in a water bath, thereby heating the paint inside the paint bucket.
[0051] By adopting the above technical solution:
[0052] Using water bath heating instead of conventional heating fan heating is more energy-efficient. The paint constant temperature heating device can stably control the temperature at the set temperature of 65℃ with a temperature deviation within 1℃. It can effectively eliminate the internal crystallization of a certain special paint and achieve the best process conditions for paint use.
[0053] Since water has a higher thermal conductivity than air, using a constant temperature heating device can effectively solve the problem of paint thickening at low temperatures. Compared with the time and power consumption of air heating, the heating efficiency of water bath heating is effectively improved, thereby saving power consumption and reducing the cost of paint heating.
[0054] A magnetic stirring assembly 7 is added to the bottom of the housing 1. When the motor 72 of the magnetic stirring assembly 7 is working, it drives the magnet 73 at one end to rotate. When the magnet 73 rotates under the drive of the motor 72, the stirring rotor 74 is subjected to the rotating magnetic field and thus makes a circular motion inside the housing 1. The circular motion of the stirring rotor 74 can effectively stir the heating water inside the housing 1, force the liquid to convect, reduce the temperature gradient, improve the heating uniformity, and thus achieve uniform heating of the paint and avoid local overheating.
[0055] After the paint bucket is placed inside the box 1, if the height of the paint bucket does not exceed the height of the box 1, the two sets of cover plates 6 can close smoothly. When the paint bucket is heated, the two sets of cover plates 6 seal the box 1 to reduce heat loss and save energy.
[0056] Example 2:
[0057] Based on Example 1, this example introduces the specific structure of the box body 1 and the cover plate 6 in a paint constant temperature heating device. Both the box body 1 and the cover plate 6 include a first steel plate 15 and a second steel plate 16, and a polyurethane insulation layer 17 is provided between the first steel plate 15 and the second steel plate 16.
[0058] Both the housing 1 and the cover plate 6 are double-layer steel plate structures, and a polyurethane insulation layer 17 is set in the sandwich of the double-layer steel plate. The steel plate and the polyurethane insulation layer 17 together constitute the thin-wall structure of the housing 1 and the structure of the cover plate 6. Both the housing 1 and the cover plate 6 have the function of heat preservation. The polyurethane insulation layer 17 reduces heat loss due to its low thermal conductivity, thereby saving energy and reducing the cost of painting heating.
[0059] Example 3:
[0060] Based on Embodiments 1 and 2, this embodiment introduces the specific structure of the sealing component 9 in a paint constant temperature heating device. The sealing component 9 includes a fixing frame 91, which is fixedly installed on the inner wall of the housing 1. An elastic layer 92 is fixedly connected to the inner side of the fixing frame 91, and an elastic ring 93 is fixedly connected to the inner ring of the elastic layer 92.
[0061] The elastic layer 92 and the elastic ring 93 are both made of elastic material. When the paint bucket is placed in the container, the elastic layer 92 and the elastic ring 93 undergo corresponding elastic deformation, causing the inner elastic ring 93 to adhere tightly to the outer surface of the paint bucket. This creates a sealed structure in the water bath heating chamber of the housing 1, reducing heat loss. When the height of the paint bucket is higher than the height of the housing 1, the cover 6 cannot close properly. The sealing component 9 is used to seal the water bath heating chamber, thereby reducing heat loss and lowering the cost of heating the paint.
[0062] In some examples, the elastic ring 93 of the sealing component 9 forms an opening 94, through which the paint bucket is placed on the partition 8 and placed inside the box 1, and the paint bucket is heated by a water bath through the box 1.
[0063] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A paint thermostatic heating device comprising a box (1), characterized in that: The inside of the box (1) is welded with mounting bracket, and the mounting bracket is installed with heating pipe (2), the heating pipe (2) is provided with two groups, the inside wall of the one side of the box (1) is installed with temperature detection probe (3), the outside of the box (1) is installed with temperature controller (4) and control box (5), the bottom of the box (1) is provided with magnetic stirring assembly (7), the both sides of the upper end of the box (1) are hinged with cover plate (6), the box (1) is built in with baffle (8) and sealing assembly (9), and the sealing assembly (9) is located above the baffle (8), a plurality of notches (81) are formed in the baffle (8), the control box (5) is built in with contactor, time relay and power module.
2. A paint thermostatic heating device according to claim 1, characterised in that: The magnetic stirring assembly (7) includes fixed box (71) and stirring rotor (74), the inside of the fixed box (71) is installed with motor (72), the output shaft of the motor (72) is fixedly connected with magnetic steel (73), the stirring rotor (74) is located at the bottom end inside the box (1), and the magnetic steel (73) is located at the bottom end outside the box (1).
3. A paint thermostatic heating device according to claim 2, wherein: The both sides of the fixed box (71) are welded with mounting lug (75), the mounting lug (75) is provided with mounting hole, and the fixed box (71) and the box (1) are fixedly connected through screws.
4. A paint thermostatic heating device according to claim 1, characterized in that: The cover plate (6) is provided with two groups, the both sides of the cover plate (6) are welded with handle (62), one of the cover plate (6) is installed with safety valve (61), and one end of the cover plate (6) is hinged with the box (1).
5. A paint thermostatic heating device according to claim 1, wherein: The edge corners of the lower end surface of the box (1) are installed with roller (11), and the roller (11) and the box (1) are fixedly connected through screws.
6. A paint thermostatic heating device according to claim 1, wherein: The lower end surface of the box (1) is provided with drain pipe (13), and the drain pipe (13) is installed with valve (14).
7. A paint thermostatic heating device according to claim 1, wherein: The both sides of the box (1) are welded with limiting plate (12), and the limiting plate (12) is used for supporting the baffle (8).
8. A paint thermostatic heating device according to claim 1, characterized in that: The box (1) and the cover plate (6) both include first steel plate (15) and second steel plate (16), and the first steel plate (15) and the second steel plate (16) are provided with polyurethane heat preservation layer (17).
9. A paint thermostatic heating device according to claim 1, wherein: The sealing assembly (9) includes fixed frame (91), the fixed frame (91) is fixedly arranged on the inner wall of the box (1), the inner side of the fixed frame (91) is fixedly connected with elastic layer (92), and the inner ring of the elastic layer (92) is fixedly connected with elastic ring (93).
10. A paint thermostatic heating device according to claim 9, wherein: The elastic ring (93) of the sealing assembly (9) forms opening (94).