Hot air circulation drying type mesh belt furnace
By introducing baffles and fan blades into the mesh belt furnace, the airflow direction is changed and dust is collected, which solves the problem of poor heat circulation effect, realizes more efficient heat utilization and dust management, and improves drying effect and energy efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIXING STAR THERMAL TECH CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-12
AI Technical Summary
Existing hot air circulating dryer mesh belt furnaces lack an effective airflow guiding structure during the hot air circulation process, resulting in poor hot air circulation performance and increased energy consumption.
A structure including a baffle and fan blades was designed. The fan blades are driven by a motor to change the airflow direction. Combined with a filter and a second fan, dust is collected, which improves heat utilization and reduces dust interference.
It achieves more efficient hot air circulation and dust collection, reduces energy consumption, improves product quality, and enhances drying effect.
Smart Images
Figure CN224230608U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mesh belt furnace technology, and in particular to a hot air circulating drying mesh belt furnace. Background Technology
[0002] Mesh belt furnaces mainly utilize mesh belts to transport materials, passing workpieces through temperature-controlled heating zones, and achieving efficient material processing through heat treatment processes.
[0003] Patent specification CN218973142U discloses a hot air circulating drying mesh belt furnace, including a mesh belt furnace mechanism. The mechanism includes a mesh belt furnace body with transmission holes on both side walls. A conveyor assembly penetrating the transmission holes is installed on the outer wall of the mesh belt furnace body. Electric heating wires are installed at both the upper and lower ends of the inner cavity of the mesh belt furnace body. A hot air circulation mechanism includes a wind speed box fixed to the top wall of the inner cavity of the mesh belt furnace body. Hot air circulation assemblies extending to both the wind speed box and the inner cavity of the mesh belt furnace body are fixed to the top wall of the mesh belt furnace body. A partition plate is fixed at the middle position of the inner cavity of the wind speed box. This application allows adjustment of the horizontal distance between the wind speed control assembly and the partition plate, enabling the circulating air entering the inner cavity of the wind speed box to be blown onto the top wall of the conveyor belt body through an appropriate number of through holes. This allows for control of the airflow rate while maintaining a constant air volume, facilitating the use of different types and specifications of materials.
[0004] However, in implementing the relevant technology, the above-mentioned hot air circulating drying mesh belt furnace has the following problems: the air in the bottom area of the inner cavity of the mesh belt furnace body is injected into the inner cavity of the wind speed box by the fan to improve the heat utilization efficiency. However, there is no structure to further guide the airflow during the hot circulation process. The blowing of the fan and the wind speed box alone may result in poor hot circulation effect, thus leading to increased energy consumption. In view of this, a hot air circulating drying mesh belt furnace is provided to overcome the above defects. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a hot air circulating drying mesh belt furnace.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hot air circulating drying mesh belt furnace, comprising a mesh belt furnace body, a mesh belt furnace conveyor belt disposed inside the mesh belt furnace body, a first fan fixedly connected to the upper end of the mesh belt furnace body, a drying box disposed outside the first fan, a partition baffle disposed at the front end of the drying box, a heat insulation layer fixedly connected to the front end of the partition baffle, a motor fixedly connected inside the heat insulation layer, a first bevel gear fixedly connected to the output end of the motor, a drive shaft meshing with the front end of the first bevel gear, a second bevel gear meshing with the rear end of the inner side of the drive shaft, a fan blade fixedly connected to the rear end of the second bevel gear, a first power gear fixedly connected to the outer side of the fan blade, a second power gear meshing with the outer side of the first power gear, and a heating element disposed at the upper end of the mesh belt furnace conveyor belt.
[0007] As a further description of the above technical solution: the lower end of the drying box is fitted with the interior of the mesh belt furnace body, the left and right ends of the partition baffle are fitted with the interior of the mesh belt furnace body, the front end of the drive shaft is rotatably connected to the interior of the partition baffle, and the front and rear ends of the second power gear are rotatably connected to the interior of the partition baffle, so that the fan blades at the rear end are driven to rotate through the second bevel gear, so that the air direction can be changed, which facilitates the control of air circulation inside the mesh belt furnace body.
[0008] As a further description of the above technical solution: the heat insulation layer is provided with a slot inside, and the shape and size of the slot cross-section match the shape and size of the motor cross-section. The front end of the heat insulation layer is provided with a circular hole, and the diameter of the circular hole matches the diameter of the motor output end, so that the motor can drive the transmission shaft to rotate, thereby changing the fan blade angle.
[0009] As a further description of the above technical solution: the partition baffle has a square groove inside, and the shape and size of the cross-section of the square groove match the shape and size of the cross-section of the fan blade, so that the fan blade can rotate inside the partition baffle.
[0010] As a further description of the above technical solution: rectangular grooves in the vertical direction are opened at both the left and right ends inside the mesh belt furnace body, and the shape and size of the cross-section of the rectangular grooves match the shape and size of the cross-section of the upper part of the partition baffle, so that hot air enters the partition baffle through the rectangular grooves opened inside the mesh belt furnace body, thereby improving the heat utilization rate of the heat cycle.
[0011] As a further description of the above technical solution: a filter screen is provided inside the first fan, a second fan is provided at the front end of the inner side of the filter screen, and a cabinet door is rotatably connected to the front end of the upper end of the mesh belt furnace body, so that the dust generated inside the mesh belt furnace body during production is blocked by the filter screen and the dust is collected by the second fan.
[0012] As a further description of the above technical solution: a hollow structure is provided at the upper end of the mesh belt furnace body, and a rectangular groove is provided at the rear end of the hollow structure provided at the upper end of the mesh belt furnace body. The shape and size of the cross-section of the rectangular groove match the shape and size of the cross-section of the second fan, so that the second fan can collect dust in the hollow structure provided at the upper end of the mesh belt furnace body and facilitate the handling by the staff through the cabinet door.
[0013] This utility model has the following beneficial effects:
[0014] The hot air circulating drying mesh belt furnace designed in this utility model uses the design and cooperation of the partition baffle and fan blades to allow the hot air inside the mesh belt furnace body to rise to the top of the furnace body after heating. The hot air is then drawn into the partition baffle by the negative pressure adsorption of the first fan, dried in the drying box, and then enters the partition baffle again before re-entering the lower part of the mesh belt furnace body for heat utilization. The fan blades are rotated by a motor, and the angle of the fan blades can be changed to facilitate the control of the air circulation inside the mesh belt furnace body.
[0015] The hot air circulating drying mesh belt oven designed in this utility model, through the design and cooperation of the filter screen and the second fan, enables the second fan to collect dust in the hollow structure opened at the upper part of the mesh belt oven body, so as to prevent dust from re-entering the heat circulation and reducing product quality. At the same time, it prevents excessive dust from interfering with the contact between the drying box and the moisture in the hot air, thereby improving the drying effect. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the mesh belt furnace body of this utility model;
[0018] Figure 3 This is a schematic diagram of the overall structure of the mesh belt furnace body in longitudinal section of this utility model;
[0019] Figure 4 This is a schematic diagram of the overall structure of the partition baffle of this utility model;
[0020] Figure 5 This is a schematic diagram of the exploded structure of the partition baffle of this utility model;
[0021] Figure 6 This utility model Figure 5 Schematic diagram of the structure at point A in the middle.
[0022] Legend:
[0023] 1. Mesh belt furnace body; 2. Mesh belt furnace conveyor belt; 3. First fan; 4. Drying box; 5. Dividing baffle; 6. Heat insulation layer; 7. Motor; 8. First bevel gear; 9. Drive shaft; 10. Second bevel gear; 11. First power gear; 12. Fan blade; 13. Second power gear; 14. Heating element; 15. Filter screen; 16. Second fan; 17. Cabinet door. Detailed Implementation
[0024] Reference Figures 1 to 6 The hot air circulating drying mesh belt furnace provided by this utility model includes a mesh belt furnace body 1, a mesh belt furnace conveyor belt 2 inside the mesh belt furnace body 1, a first fan 3 connected to the upper end of the mesh belt furnace body 1 by bolts, a drying box 4 outside the first fan 3, a partition baffle 5 at the front end of the drying box 4, a heat insulation layer 6 welded to the front end of the partition baffle 5, a motor 7 connected to the heat insulation layer 6 by bolts, a first bevel gear 8 welded to the output end of the motor 7, a transmission shaft 9 meshing at the front end of the first bevel gear 8, a second bevel gear 10 meshing at the rear end of the inner side of the transmission shaft 9, a fan blade 12 welded to the rear end of the second bevel gear 10, a first power gear 11 welded to the outer side of the fan blade 12, a second power gear 13 meshing at the outer side of the first power gear 11, and a heating plate 14 at the upper end of the mesh belt furnace conveyor belt 2.
[0025] As a further implementation of the above technical solution: the lower end of the drying box 4 is fitted with the inside of the mesh belt furnace body 1, the left and right ends of the partition baffle 5 are fitted with the inside of the mesh belt furnace body 1, the front end of the drive shaft 9 is rotatably connected to the inside of the partition baffle 5, and the front and rear ends of the second power gear 13 are rotatably connected to the inside of the partition baffle 5, so that the fan blade 12 at the rear end is driven to rotate through the second bevel gear 10, so that the air direction can be changed, which facilitates the control of air circulation inside the mesh belt furnace body 1.
[0026] As a further implementation of the above technical solution: the heat insulation layer 6 is provided with a slot, and the shape and size of the slot cross-section match the shape and size of the motor 7 cross-section. The front end of the heat insulation layer 6 is provided with a circular hole, and the diameter of the circular hole matches the output diameter of the motor 7, so that the motor 7 can drive the transmission shaft 9 to rotate, thereby changing the angle of the fan blade 12.
[0027] As a further implementation of the above technical solution: a square groove is provided inside the partition baffle 5, and the shape and size of the cross-section of the square groove matches the shape and size of the cross-section of the fan blade 12, so that the fan blade 12 can rotate inside the partition baffle 5.
[0028] As a further implementation of the above technical solution: rectangular grooves in the vertical direction are opened at both ends of the mesh belt furnace body 1, and the shape and size of the cross-section of the rectangular grooves match the shape and size of the cross-section of the upper end of the partition baffle 5, so that hot air enters the partition baffle 5 through the rectangular grooves opened inside the mesh belt furnace body 1, thereby improving the heat utilization rate of the heat cycle.
[0029] As a further implementation of the above technical solution: a filter screen 15 is provided inside the first fan 3, and a second fan 16 is provided at the front end of the inner side of the filter screen 15. The cabinet door 17 is rotatably connected to the front end of the upper end of the mesh belt furnace body 1, so that the dust generated inside the mesh belt furnace body 1 during production is blocked by the filter screen 15, and the dust is collected by the second fan 16.
[0030] As a further implementation of the above technical solution: a hollow structure is provided at the upper end of the mesh belt furnace body 1, and a rectangular groove is provided at the rear end of the hollow structure provided at the upper end of the mesh belt furnace body 1. The shape and size of the cross-section of the rectangular groove are matched with the shape and size of the cross-section of the second fan 16, so that the second fan 16 can collect dust in the hollow structure provided at the upper end of the mesh belt furnace body 1, and facilitate the handling by the staff through the cabinet door 17.
[0031] Working principle:
[0032] When using this invention, the material is transported to the mesh belt furnace body 1 via the conveyor belt 2. Then, the heating element 14 is activated to heat the material. The heated air inside the mesh belt furnace body 1 rises to the top of the furnace body 1. The hot air is then forced through the filter screen 15 by the negative pressure adsorption of the first fan 3, filtering out dust. The dust is collected by the negative pressure adsorption of the second fan 16. After being dried by the drying box 4, the hot air enters the partition baffle 5 through the rectangular slots at both ends of the mesh belt furnace body 1. Finally, the motor 7 inside the insulation layer 6 is activated. The output of motor 7 drives the first bevel gear 8 to rotate, the first bevel gear 8 drives the front drive shaft 9 to rotate, the drive shaft 9 drives the inner second bevel gear 10 to rotate, the second bevel gear 10 drives the rear fan blade 12 to rotate, and at the same time, the first power gear 11 set on the outer side of the fan blade 12 drives the second power gear 13 to rotate, so that all fan blades 12 open and close at the same time, which facilitates the control of air circulation inside the mesh belt furnace body 1. After production is completed, the staff can open the cabinet door 17 to deal with the dust collected inside the mesh belt furnace body 1.
[0033] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A hot air circulating drying mesh belt furnace, comprising a mesh belt furnace body (1), characterized in that: The mesh belt furnace body (1) is equipped with a mesh belt furnace conveyor belt (2) inside. A first fan (3) is fixedly connected to the upper end of the mesh belt furnace body (1). A drying box (4) is provided on the outside of the first fan (3). A partition baffle (5) is provided at the front end of the drying box (4). A heat insulation layer (6) is fixedly connected to the front end of the partition baffle (5). A motor (7) is fixedly connected inside the heat insulation layer (6). A first bevel gear (8) is fixedly connected to the output end of the motor (7). A transmission shaft (9) is meshed with the front end of the first bevel gear (8). A second bevel gear (10) is meshed with the rear end of the inner side of the transmission shaft (9). A fan blade (12) is fixedly connected to the rear end of the second bevel gear (10). A first power gear (11) is fixedly connected to the outside of the fan blade (12). A second power gear (13) is meshed with the outside of the first power gear (11). A heating plate (14) is provided at the upper end of the mesh belt furnace conveyor belt (2).
2. The hot air circulating drying mesh belt furnace according to claim 1, characterized in that: The lower end of the drying box (4) is fitted with the inside of the mesh belt furnace body (1), the left and right ends of the partition baffle (5) are fitted with the inside of the mesh belt furnace body (1), the front end of the drive shaft (9) is rotatably connected to the inside of the partition baffle (5), and the front and rear ends of the second power gear (13) are rotatably connected to the inside of the partition baffle (5).
3. The hot air circulating drying mesh belt furnace according to claim 1, characterized in that: The heat insulation layer (6) has a slot inside, and the shape and size of the slot cross-section match the shape and size of the motor (7) cross-section. The heat insulation layer (6) has a circular hole at the front end, and the diameter of the circular hole matches the diameter of the output end of the motor (7).
4. The hot air circulating drying mesh belt furnace according to claim 1, characterized in that: The partition baffle (5) has a square groove inside, and the shape and size of the cross-section of the square groove match the shape and size of the cross-section of the fan blade (12).
5. A hot air circulating drying mesh belt furnace according to claim 1, characterized in that: The mesh belt furnace body (1) has rectangular grooves in the vertical direction at both the left and right ends inside, and the shape and size of the cross-section of the rectangular grooves match the shape and size of the cross-section at the upper end of the partition baffle (5).
6. A hot air circulating drying mesh belt furnace according to claim 1, characterized in that: A filter screen (15) is provided inside the first fan (3), and a second fan (16) is provided at the front end of the inner side of the filter screen (15). A cabinet door (17) is rotatably connected to the front end of the upper end of the mesh belt furnace body (1).
7. A hot air circulating drying mesh belt furnace according to claim 1, characterized in that: The upper part of the mesh belt furnace body (1) has a hollow structure. The rear end of the hollow structure at the upper part of the mesh belt furnace body (1) has a rectangular groove, and the shape and size of the cross-section of the rectangular groove match the shape and size of the cross-section of the second fan (16).