A drying apparatus for paint processing

Abstract

The utility model relates to the technical field of coating processing, and disclose a kind of drying device for coating processing, including mounting bracket, the surface of mounting bracket is fixedly installed with drying cylinder, the top of drying cylinder is separately provided with air inlet pipe, air outlet pipe and feed hopper, the air inlet end of air inlet pipe is provided with fan, which drives air to enter the inside of drying cylinder, the bottom end of drying cylinder is embedded with discharge pipe.The drying device for coating processing is heated by electric hot plate inside drying cylinder, air flow circulation inside and outside drying cylinder is driven by fan, coating powder is dried, and through waste heat recovery component, hot air is discharged by air outlet pipe, heat-absorbing is carried out by heat-conducting liquid inside first heat exchange jacket, and through circulation liquid inlet pipe, it flows to the inside of second heat exchange jacket, the incoming air of air inlet pipe is preheated, the recycling of heat contained in hot air is realized, the loss of heat is effectively avoided, energy is saved, and production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of coating processing technology, and more specifically to a drying device for coating processing. Background Technology

[0002] Paint is a material that can be applied to the surface of an object using various application techniques to form a firmly adhering, continuous solid film with a certain strength. This film is commonly referred to as a coating, also known as a paint film or coating layer. During the processing of paint, the paint powder needs to be dried.

[0003] A search revealed an existing patent (publication number: CN220959316U) that discloses a drying device for coating processing. During operation, by incorporating a flow heating component, the coating flows within the vertical section of the inlet pipe. As the coating slides into contact with the outer edge of the dispersing cone, the heat-conducting oil within the dispersing cone heats the dispersed coating, improving heating efficiency. This reduces the rotation time of the motor-driven ribbon agitator, thereby extending the lifespan of both the motor and the ribbon agitator. However, the inventors discovered the following problem with the existing technology during the development of this invention: In the aforementioned drying device, when drying coating powder, the hot, humid air is directly discharged to the outside of the tank under airflow, resulting in heat loss and energy waste.

[0004] In view of this, the present invention proposes a drying device for coating processing. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a drying device for coating processing to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a drying device for coating processing, including a mounting frame, on the surface of which a drying cylinder is fixedly mounted, the top of which is respectively provided with an air inlet pipe, an air outlet pipe and a feed hopper, the air inlet end of which is provided with a fan to drive air into the drying cylinder, the bottom end of which is embedded with a discharge pipe, the surface of the feed hopper and the discharge pipe are both provided with gate valves, the inner wall of the drying cylinder is uniformly embedded with a number of electric heating plates, and a waste heat recovery component is provided between the air inlet pipe and the air outlet pipe;

[0007] The waste heat recovery assembly includes a second heat exchange jacket and a first heat exchange jacket respectively disposed on the outer wall of the middle section of the air inlet pipe and the air outlet pipe. A circulating liquid inlet pipe is fixedly connected between the first heat exchange jacket and the second heat exchange jacket. A liquid storage tank is fixedly installed on the top of the drying cylinder. The inside of the liquid storage tank contains heat transfer liquid. A pump body is embedded in the side wall of the liquid storage tank. The liquid inlet end of the pump body extends into the inside of the liquid storage tank. The liquid outlet end of the pump body is connected to the first heat exchange jacket through a liquid delivery pipe. A return liquid pipe is embedded on the surface of the second heat exchange jacket. The return liquid pipe is connected to the inner cavity of the liquid storage tank.

[0008] Furthermore, a control panel is fixedly mounted on the surface of the mounting bracket, and the control panel is electrically connected to an external power source via wires.

[0009] As a further description of the above technical solution: the control panel facilitates the operation of the drying device, improves the automation level of the drying device, and reduces the labor intensity of the staff.

[0010] Furthermore, the inner walls of both the first and second heat exchange jackets are arranged in a circumferential array with a plurality of heat exchange wires at equal intervals, and the heat exchange wires are made of metallic copper.

[0011] As a further description of the above technical solution: by setting the heat exchange wire, the contact area between the heat exchange wire and the airflow is increased, thereby improving the heat exchange efficiency between the first heat exchange jacket and the second heat exchange jacket and the heat transfer fluid, and improving the heat recovery and utilization rate.

[0012] Furthermore, a vertical shaft is rotatably connected to the top of the drying cylinder, a stirring plate is fixedly installed on the surface of the vertical shaft, and a geared motor for driving the vertical shaft to rotate is coaxially fixedly installed on the top of the drying cylinder.

[0013] As a further description of the above technical solution: by setting up the stirring plate, the coating powder inside the drying cylinder is turned over, which improves the drying uniformity of the coating powder and ensures the drying quality.

[0014] Furthermore, a filter cylinder is threadedly installed at the air inlet end of the fan, and an air filter element is installed inside the filter cylinder.

[0015] As a further description of the above technical solution: by setting up the filter cartridge, impurities in the air are effectively prevented from entering the drying cylinder, ensuring the cleanliness of the air inside the drying cylinder and further guaranteeing the drying quality.

[0016] Furthermore, the interior of the air outlet duct is equipped with an intercepting mesh and a humidity sensor.

[0017] As a further description of the above technical solution: by setting up the interception net and humidity sensor, the exhaust gas is filtered and the humidity is detected, which facilitates the monitoring of the working status of the drying device and ensures the stable operation of the drying device.

[0018] The technical effects and advantages of this utility model are as follows:

[0019] 1. Compared with the prior art, this drying device for coating processing heats the coating powder inside the drying cylinder with an electric heating plate and uses a fan to drive airflow inside and outside the drying cylinder to achieve the purpose of drying the coating powder. By setting up a waste heat recovery component, the hot air containing moisture is discharged through the air outlet pipe. The heat is absorbed by the heat-conducting liquid inside the first heat exchange jacket and flows to the second heat exchange jacket through the circulating liquid inlet pipe to preheat the air entering the air inlet pipe. This realizes the recovery and utilization of the heat contained in the hot air containing moisture, effectively avoids heat loss, saves energy, and reduces production costs.

[0020] 2. Compared with existing technologies, this drying device for coating processing, through its control panel, facilitates operation, improves automation, and reduces the workload of workers. The heat exchange wires increase the contact area with the airflow, thereby improving the heat exchange efficiency between the first and second heat exchange jackets and the heat transfer fluid, and enhancing heat recovery. The stirring plate agitates the coating powder inside the drying cylinder, improving drying uniformity and ensuring quality. The filter effectively prevents airborne impurities from entering the drying cylinder, ensuring air cleanliness and further guaranteeing drying quality. The interceptor and humidity sensor filter and detect humidity in the exhaust gas, facilitating monitoring of the drying device's operation and ensuring stable operation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention from one perspective;

[0022] Figure 2 This is a two-dimensional structural schematic diagram of the present invention.

[0023] Figure 3 This is a schematic diagram of the orthographic section of the present invention;

[0024] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0025] The attached diagram is labeled as follows: 1. Mounting frame; 2. Drying cylinder; 3. Air inlet pipe; 4. Air outlet pipe; 5. Feed hopper; 6. Discharge pipe; 7. Heating plate; 8. First heat exchange jacket; 9. Second heat exchange jacket; 10. Circulating liquid inlet pipe; 11. Liquid storage tank; 12. Pump body; 13. Liquid delivery pipe; 14. Liquid return pipe; 15. Control panel; 16. Heat exchange wire; 17. Vertical shaft; 18. Stirring plate; 19. Gear motor; 20. Fan; 21. Filter cartridge; 22. Interception net; 23. Humidity sensor. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The drying device for coating processing involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Reference Figures 1 to 4 This utility model provides a drying device for coating processing, including a mounting frame 1, a control panel 15 fixedly mounted on the surface of the mounting frame 1, and the control panel 15 electrically connected to an external power source through wires.

[0028] The settings on the control panel 15 facilitate the operation of the drying device, improve the automation level of the drying device, and reduce the labor intensity of the staff.

[0029] A drying cylinder 2 is fixedly installed on the surface of the mounting frame 1. An air inlet pipe 3, an air outlet pipe 4, and a feed hopper 5 are respectively provided on the top of the drying cylinder 2. A fan 20 is provided at the air inlet end of the air inlet pipe 3 to drive air into the interior of the drying cylinder 2. A discharge pipe 6 is embedded at the bottom end of the drying cylinder 2. Gate valves are provided on the surfaces of the feed hopper 5 and the discharge pipe 6. Several electric heating plates 7 are evenly embedded on the inner wall of the drying cylinder 2.

[0030] This drying device for coating processing heats the coating powder inside the drying cylinder 2 with an electric heating plate 7 and uses a fan 20 to drive airflow inside and outside the drying cylinder 2 to achieve the purpose of drying the coating powder.

[0031] A vertical shaft 17 is rotatably connected to the top of the drying cylinder 2. A stirring plate 18 is fixedly installed on the surface of the vertical shaft 17. A geared motor 19 for driving the vertical shaft 17 to rotate is coaxially fixedly installed on the top of the drying cylinder 2.

[0032] The mixing plate 18 is used to agitate the coating powder inside the drying cylinder 2, thereby improving the drying uniformity of the coating powder and ensuring the drying quality.

[0033] The air inlet end of the fan 20 is threaded with a filter cartridge 21, and an air filter element is installed inside the filter cartridge 21.

[0034] Furthermore, the filter cartridge 21 effectively prevents impurities in the air from entering the drying cylinder 2, ensuring the cleanliness of the air inside the drying cylinder 2 and further guaranteeing the drying quality.

[0035] An intercepting net 22 and a humidity sensor 23 are respectively installed inside the air outlet duct 4.

[0036] Furthermore, the installation of the interceptor 22 and the humidity sensor 23 enables the filtration and humidity detection of the exhaust gas, facilitating the monitoring of the working status of the drying device and ensuring its stable operation.

[0037] A waste heat recovery component is installed between the air inlet pipe 3 and the air outlet pipe 4.

[0038] The waste heat recovery assembly includes a second heat exchange jacket 9 and a first heat exchange jacket 8 respectively disposed on the outer wall of the middle section of the air inlet pipe 3 and the air outlet pipe 4. A circulating liquid inlet pipe 10 is fixedly connected between the first heat exchange jacket 8 and the second heat exchange jacket 9. A liquid storage tank 11 is fixedly installed on the top of the drying cylinder 2. The inside of the liquid storage tank 11 is filled with heat transfer liquid. A pump body 12 is embedded in the side wall of the liquid storage tank 11. The liquid inlet end of the pump body 12 extends into the inside of the liquid storage tank 11. The liquid outlet end of the pump body 12 is connected to the first heat exchange jacket 8 through a liquid delivery pipe 13. A return liquid pipe 14 is embedded on the surface of the second heat exchange jacket 9. The return liquid pipe 14 is connected to the inner cavity of the liquid storage tank 11.

[0039] It is worth noting that by setting up a waste heat recovery component, during the drying process, the hot air containing moisture is discharged through the air outlet 4. The heat is absorbed by the heat-conducting liquid inside the first heat exchange jacket 8 and flows through the circulating liquid inlet pipe 10 to the second heat exchange jacket 9 to preheat the air entering through the air inlet pipe 3. This achieves the recovery and utilization of the heat contained in the hot air containing moisture, effectively avoiding heat loss, saving energy, and reducing production costs.

[0040] The inner walls of the first heat exchange jacket 8 and the second heat exchange jacket 9 are each arranged in a circumferential array with a number of heat exchange wires 16 at equal intervals. The heat exchange wires 16 are made of copper.

[0041] Furthermore, by setting the heat exchange wire 16, the contact area between the heat exchange wire and the airflow is increased, thereby improving the heat exchange efficiency between the first heat exchange jacket 8 and the second heat exchange jacket 9 and the heat transfer fluid, and improving the heat recovery and utilization rate.

[0042] Finally, it should be noted that the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A drying device for paint processing comprising a mounting frame (1), characterized in that: The mounting frame (1) is fixedly mounted with a drying cylinder (2). The top of the drying cylinder (2) is provided with an air inlet pipe (3), an air outlet pipe (4) and a feed hopper (5). The air inlet end of the air inlet pipe (3) is provided with a fan (20) to drive air into the drying cylinder (2). The bottom end of the drying cylinder (2) is fitted with a discharge pipe (6). The surfaces of the feed hopper (5) and the discharge pipe (6) are both provided with gate valves. The inner wall of the drying cylinder (2) is uniformly fitted with several electric heating plates (7). A waste heat recovery component is provided between the air inlet pipe (3) and the air outlet pipe (4). The waste heat recovery assembly includes a second heat exchange jacket (9) and a first heat exchange jacket (8) respectively disposed on the outer wall of the middle section of the air inlet pipe (3) and the air outlet pipe (4). A circulating liquid inlet pipe (10) is fixedly connected between the first heat exchange jacket (8) and the second heat exchange jacket (9). A liquid storage tank (11) is fixedly installed on the top of the drying cylinder (2). The inside of the liquid storage tank (11) is filled with heat transfer liquid. A pump body (12) is embedded in the side wall of the liquid storage tank (11). The liquid inlet end of the pump body (12) extends into the inside of the liquid storage tank (11). The liquid outlet end of the pump body (12) is connected to the first heat exchange jacket (8) through a liquid delivery pipe (13). A return liquid pipe (14) is embedded on the surface of the second heat exchange jacket (9). The return liquid pipe (14) is connected to the inner cavity of the liquid storage tank (11).

2. The drying apparatus for coating processing according to claim 1, characterized in that: A control panel (15) is fixedly mounted on the surface of the mounting bracket (1), and the control panel (15) is electrically connected to an external power source through wires.

3. A drying apparatus for coating processing according to claim 1, characterized in that: The inner walls of the first heat exchange jacket (8) and the second heat exchange jacket (9) are each arranged in a circumferential array with a plurality of heat exchange wires (16) at equal intervals. The heat exchange wires (16) are made of copper.

4. A drying apparatus for paint processing according to claim 1, wherein: The top of the drying cylinder (2) is rotatably connected to a vertical shaft (17), and a stirring plate (18) is fixedly installed on the surface of the vertical shaft (17). A geared motor (19) for driving the vertical shaft (17) to rotate is coaxially fixedly installed on the top of the drying cylinder (2).

5. A drying apparatus for paint processing as defined in claim 1, wherein: The air inlet end of the fan (20) is threaded with a filter cylinder (21), and an air filter element is installed inside the filter cylinder (21).

6. A drying apparatus for coating processing according to claim 1, characterized in that: The air outlet duct (4) is equipped with an interception net (22) and a humidity sensor (23).

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