Double-circulation air duct chemical material thawing and heating box
By combining the rotating shaft, positioning sleeve, turntable, and motor, along with the exhaust fan and guide pipe, the problem of uneven heating of chemical raw materials in the heating chamber is solved, achieving uniform heating and efficient heat utilization, thereby improving the stability of chemical raw materials and energy utilization rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING HONGCHUANG DRYING EQUIPMENT CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-06-26
AI Technical Summary
Uneven heating of chemical raw materials in the heating chamber can lead to excessively high local temperatures or incomplete thawing, affecting chemical stability.
The system employs a combination of a rotating shaft, positioning sleeve, turntable, and motor. The rotation of the turntable ensures that the chemical raw materials come into uniform contact with heat, and the combination of an exhaust fan and a guide pipe improves the heat utilization rate.
This achieves uniform heating of chemical raw materials, improves heat utilization, and reduces energy consumption.
Smart Images

Figure CN224410007U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating box technology, specifically a dual-circulation air duct chemical raw material defrosting heating box. Background Technology
[0002] The dual-circulation air duct chemical raw material thawing and heating box mainly adopts the working principle of hot air circulation. The electric heater placed on the side of the box generates heat, which is discharged into the box through the side air duct. After passing through the chemical raw material barrels and other dry materials placed in the box, the hot air is then drawn in by the centrifugal fan at the top to form a circulation. This allows the hot air to fully convect inside the box, making the temperature inside the box as uniform as possible, improving the heating capacity of the airflow, and greatly improving the temperature uniformity. The dual-circulation air duct chemical raw material thawing and heating box is mainly used in the chemical industry, coating industry, pesticide industry, and food industry.
[0003] Currently, the dual-circulation air duct design can make the hot air circulation more uniform. However, the chemical raw materials are fixed inside the heating box. At the same time, due to the shape of the chemical raw materials, such as solid blocks, powders, and different bulk densities, the heat conduction efficiency between the inside and the surface of the chemical raw materials is quite different, resulting in uneven heating. This may lead to local overheating or incomplete thawing, which may affect the chemical stability of the chemical raw materials. To address these issues, we provide a dual-circulation air duct chemical raw material thawing heating box. Utility Model Content
[0004] 1) Technical problems to be solved
[0005] This invention proposes a dual-circulation air duct chemical raw material defrosting and heating box. Through the cooperation between the rotating shaft, positioning sleeve, turntable and motor, it solves the problem that the large difference in heat conduction efficiency between the inside and the surface of the chemical raw material, uneven heating, and the potential for local overheating or incomplete defrosting may affect the chemical stability of the chemical raw material.
[0006] (ii) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a dual-circulation air duct chemical raw material defrosting and heating box, comprising a box body, a box door, and a heating tube. The box door is hinged to the box body. A rotating shaft is installed on the inner bottom wall of the box body. A positioning sleeve is rotatably connected to the outer surface of the rotating shaft. A turntable is installed on the upper surface of the positioning sleeve. A gear plate is connected to the lower surface of the turntable. A gear plate is meshed with the gear plate. A motor is installed on one side of the box body. The output shaft of the motor is connected to a transmission shaft. The end of the transmission shaft away from the motor is connected to the inner wall of the gear.
[0008] The inner wall of the box is connected to a diffuser, the inner wall of the diffuser is connected to a first guide plate, a heating box is connected to one side of the box and the heating box corresponds to the diffuser, the heating tube is installed inside the heating box, and a blower is provided outside the heating box;
[0009] The inner wall of the housing is connected to a flow-concentrating hood, the inner wall of the flow-concentrating hood is connected to a second flow guide plate, the other side of the housing is connected to a wind box, the top of the wind box is connected to a first flow guide pipe, the top of the heating box is installed with a second flow guide pipe, and the top of the housing is installed with an exhaust fan. The end of the first flow guide pipe away from the wind box is connected to the input end of the exhaust fan, and the end of the second flow guide pipe away from the heating box is connected to the output end of the exhaust fan.
[0010] Furthermore, a support frame is installed on one side of the heating box, and the hair dryer is installed inside the support frame. There are multiple hair dryers, and the multiple hair dryers are arranged in an array at equal distances.
[0011] Furthermore, there are multiple first guide vanes, and the multiple first guide vanes are arranged in an array at equal intervals.
[0012] Furthermore, there are multiple second guide vanes, and the multiple second guide vanes are arranged in an equidistant array.
[0013] Furthermore, the inner bottom wall of the housing is connected to multiple bases, and the multiple bases are arranged in an equidistant array. The inner wall of the base is rotatably connected to the outer surface of the drive shaft.
[0014] Furthermore, a wheel seat is installed on the inner bottom wall of the box, and multiple support wheels are rotatably connected to the inner wall of the wheel seat. The multiple support wheels are arranged in a circular array, and the outer surface of the support wheels is in contact with the lower surface of the turntable.
[0015] Furthermore, the number of heating tubes is multiple, and the multiple heating tubes are arranged in an array at equal intervals.
[0016] (iii) Beneficial effects:
[0017] Compared with existing technologies, this dual-circulation air duct chemical raw material defrosting and heating box has the following advantages:
[0018] I. This dual-circulation air duct chemical raw material defrosting and heating box, through the cooperation between the rotating shaft, positioning sleeve, turntable and motor, the rotating shaft and positioning sleeve can provide support for the turntable to maintain the stability of the turntable during rotation, the motor is the power source to provide power for the gear rotation, the turntable receives the power of the gear through the gear plate, so that the turntable has the function of rotation, and the chemical raw materials are rotated at the same time by the rotation of the turntable. While rotating, the chemical raw materials are in uniform contact with heat, improving the heating uniformity of the chemical raw materials.
[0019] II. This dual-circulation air duct chemical raw material thawing and heating box, through the cooperation of the exhaust fan, the first guide pipe and the second guide pipe, transports heat inside the box through the first guide pipe and the second guide pipe. The heat collected by the concentrator is transported to the inside of the heating box. The exhaust fan is used as a power source to drive the heat inside the air box to flow into the heating box. By utilizing the heat after use inside the box, the heat utilization rate is improved and energy consumption is reduced. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the overall rear view structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the internal structure of the box body of this utility model;
[0024] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the box body of this utility model;
[0025] Figure 5 This is a bottom view of the turntable structure of this utility model;
[0026] Figure 6 This is a schematic diagram of the flow-concentrating hood structure of this utility model;
[0027] Figure 7 This is a schematic diagram of the diffuser structure of this utility model;
[0028] Figure 8 This is a schematic diagram of the heating tube structure of this utility model.
[0029] In the diagram: 1. Housing; 2. Door; 3. Heating element; 4. Shaft; 5. Positioning sleeve; 6. Turntable; 7. Gear plate; 8. Gear; 9. Motor; 10. Drive shaft; 11. Radiator; 12. First guide plate; 13. Heating box; 14. Blower; 15. Concentrator; 16. Second guide plate; 17. Air box; 18. First guide pipe; 19. Second guide pipe; 20. Exhaust fan; 21. Support frame; 22. Base; 23. Wheel seat; 24. Support wheel. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] like Figure 1-8 As shown, this utility model provides a technical solution: a dual-circulation air duct chemical raw material defrosting and heating box, including a box body 1, a box door 2 and a heating tube 3. The box door 2 is hinged to the box body 1. The opening of the heating box 13 is formed by the box door 2 to prevent the heat inside the box body 1 from spreading to the outside. The box body 1 has a heat preservation function, which can improve the utilization rate of heat.
[0032] A rotating shaft 4 is installed on the inner bottom wall of the housing 1. A positioning sleeve 5 is rotatably connected to the outer surface of the rotating shaft 4. A turntable 6 is installed on the upper surface of the positioning sleeve 5. The rotating shaft 4 provides support for the turntable 6, maintaining the stability of the turntable 6 during rotation. The turntable 6 receives the support force from the rotating shaft 4 through the positioning sleeve 5. A gear 7 is connected to the lower surface of the turntable 6. The gear 7 is meshed with a gear 8. A motor 9 is installed on one side of the housing 1. The output shaft of the motor 9 is connected to a transmission shaft 10. The end of the transmission shaft 10 away from the motor 9 is connected to the inner wall of the gear 8. The motor 9 serves as the power source, providing power for the rotation of the gear 8. The motor 9 transmits power to the gear 8 through the transmission shaft 10. The turntable 6 receives the power from the gear 8 through the gear ring, thereby driving the turntable 6 to rotate. The turntable 6 provides support for the chemical raw materials.
[0033] A diffuser 11 is connected to the inner wall of the housing 1, and a first guide plate 12 is connected to the inner wall of the diffuser 11. The diffuser 11 increases the heat diffusion range. A heating box 13 is connected to one side of the housing 1, and the heating box 13 corresponds to the diffuser 11. The heating tube 3 is installed inside the heating box 13. A blower 14 is installed outside the heating box 13. A support frame 21 is installed on one side of the heating box 13. The blower 14 is installed inside the support frame 21. There are multiple blowers 14, and the multiple blowers 14 are arranged in an equidistant array. The support frame 21 provides support for the blowers 14 to maintain their stability. The blowers 14 are used as a power source to draw in the airflow outside the housing 1. After the airflow, the heat released above the heating tube 3 is brought into the housing 1.
[0034] A concentrator 15 is connected to the inner wall of the housing 1, and a second guide plate 16 is connected to the inner wall of the concentrator 15. A fan box 17 is connected to the other side of the housing 1, and a first guide pipe 18 is connected to the top of the fan box 17. The concentrator 15 facilitates the collection of heat inside the housing 1. A second guide pipe 19 is installed above the heating box 13, and an exhaust fan 20 is installed above the housing 1. The end of the first guide pipe 18 away from the fan box 17 is connected to the input end of the exhaust fan 20, and the end of the second guide pipe 19 away from the heating box 13 is connected to the output end of the exhaust fan 20. The heat collected by the concentrator 15 is transported to the interior of the heating box 13 through the first guide pipe 18 and the second guide pipe 19. The exhaust fan 20 is used as a power source to drive the heat inside the fan box 17 to flow into the heating box 13.
[0035] There are multiple first guide vanes 12, and these first guide vanes 12 are arranged in an equidistant array. There are also multiple second guide vanes 16, and these second guide vanes 16 are arranged in an equidistant array. The first guide vanes 12 and the second guide vanes 16 guide the airflow. The first guide vanes 12 are used to evenly distribute the heat released by the diffuser 11 to the outside. The second guide vanes 16 are used to collect the heat, so that the heat flows to the converging hood 15. Both the first guide vanes 12 and the second guide vanes 16 have an angle adjustment function, so that the first guide vanes 12 and the second guide vanes 16 have the optimal angle.
[0036] The inner bottom wall of the housing 1 is connected to multiple bases 22, and the multiple bases 22 are arranged in an equidistant array. The inner wall of the base 22 is rotatably connected to the outer surface of the drive shaft 10, and the base 22 provides support for the drive shaft 10 to maintain the stability of the drive shaft 10.
[0037] The inner bottom wall of the housing 1 is equipped with a wheel seat 23. Multiple support wheels 24 are rotatably connected to the inner wall of the wheel seat 23. The multiple support wheels 24 are arranged in a circular array. The outer surface of the support wheels 24 is in contact with the lower surface of the turntable 6. The outer part of the wheel seat 23 is annular. The support wheels 24 provide support force at the edge of the turntable 6 to maintain the stability of the turntable 6 and make the turntable 6 more capable of bearing weight.
[0038] There are multiple heating tubes 3, and the multiple heating tubes 3 are arrayed at equal distances. Heat is generated through the heating tubes 3 to provide heat supply to the inside of the box 1.
[0039] Working principle: In use, the chemical raw materials are first placed above the turntable 6. Then, the motor 9, exhaust fan 20, blower 14, and heating tube 3 are started. After the blower 14 starts, it drives the airflow. The flowing air carries the heat released by the heating tube 3 into the interior of the chamber 1. The heat is evenly released into the interior of the chamber 1 through the diffuser 11 and the first guide plate 12. After the exhaust fan 20 starts, it collects the heat inside the chamber 1 after contact with the chemical raw materials through the concentrator 15 and the second guide plate 16. The collected heat is then transported back to the interior of the heating box 13 through the first guide pipe 18 and the second guide pipe 19, thereby improving the heat utilization rate. After the motor 9 rotates, it drives the turntable 6 to rotate through the gear 8. The rotation of the turntable 6 drives the chemical raw materials to rotate at the same time. The chemical raw materials come into even contact with the heat released by the diffuser 11 through rotation.
[0040] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0041] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A dual-circulation air duct chemical raw material defrosting and heating box, comprising a box body (1), a box door (2), and a heating tube (3), characterized in that: The door (2) is hinged to the box body (1). A rotating shaft (4) is installed on the inner bottom wall of the box body (1). A positioning sleeve (5) is rotatably connected to the outer surface of the rotating shaft (4). A turntable (6) is installed on the upper surface of the positioning sleeve (5). A gear plate (7) is connected to the lower surface of the turntable (6). A gear (8) is meshed with the gear plate (7). A motor (9) is installed on one side of the box body (1). A transmission shaft (10) is connected to the output shaft of the motor (9). The end of the transmission shaft (10) away from the motor (9) is connected to the inner wall of the gear (8). The inner wall of the box (1) is connected to a diffuser hood (11), the inner wall of the diffuser hood (11) is connected to a first guide plate (12), a heating box (13) is connected to one side of the box (1), and the heating box (13) corresponds to the diffuser hood (11). The heating tube (3) is installed inside the heating box (13), and a blower (14) is provided outside the heating box (13). The inner wall of the housing (1) is connected to a flow-concentrating hood (15), the inner wall of the flow-concentrating hood (15) is connected to a second flow guide plate (16), the other side of the housing (1) is connected to a blower (17), the top of the blower (17) is connected to a first flow guide pipe (18), the top of the heating box (13) is installed with a second flow guide pipe (19), the top of the housing (1) is installed with an exhaust fan (20), the end of the first flow guide pipe (18) away from the blower (17) is connected to the input end of the exhaust fan (20), and the end of the second flow guide pipe (19) away from the heating box (13) is connected to the output end of the exhaust fan (20).
2. The dual-circulation air duct chemical raw material thawing and heating box according to claim 1, characterized in that: A support frame (21) is installed on one side of the heating box (13), and the hair dryer (14) is installed inside the support frame (21). There are multiple hair dryers (14), and the multiple hair dryers (14) are arranged in an equidistant array.
3. The dual-circulation air duct chemical raw material thawing and heating box according to claim 1, characterized in that: There are multiple first guide vanes (12), and the multiple first guide vanes (12) are arrayed at equal intervals.
4. The dual-circulation air duct chemical raw material thawing and heating box according to claim 1, characterized in that: The number of the second guide vanes (16) is multiple, and the multiple second guide vanes (16) are arrayed at equal intervals.
5. The dual-circulation air duct chemical raw material thawing and heating box according to claim 1, characterized in that: The inner bottom wall of the box (1) is connected to multiple bases (22), and the multiple bases (22) are arranged in an equidistant array. The inner wall of the base (22) is rotatably connected to the outer surface of the drive shaft (10).
6. The dual-circulation air duct chemical raw material thawing and heating box according to claim 1, characterized in that: The inner bottom wall of the box (1) is equipped with a wheel seat (23), and the inner wall of the wheel seat (23) is rotatably connected with a plurality of support wheels (24), and the plurality of support wheels (24) are arranged in a circular array. The outer surface of the support wheels (24) is in contact with the lower surface of the turntable (6).
7. The dual-circulation air duct chemical raw material thawing and heating box according to claim 1, characterized in that: The number of heating tubes (3) is multiple, and the multiple heating tubes (3) are arranged in an equidistant array.