A hot air circulation drying device
By designing a symmetrical perforated plate for air intake, a central exhaust system, and a support rod and wedge-shaped plate drive assembly, the problem of drying dead zones caused by single-sided air intake is solved, achieving uniform hot air distribution and efficient drying, thus improving drying quality and equipment reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU DRYING EQUIP CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-31
AI Technical Summary
Existing hot air circulation drying devices suffer from single-sided air intake, resulting in drying dead zones and failing to ensure uniform heating of items, thus reducing drying quality.
The system employs a symmetrical perforated plate for air intake and a central exhaust system. Through the cooperation of support rods, wedge plates, and drive components, the dried material moves up and down within the drying chamber, ensuring uniform distribution of hot air. In conjunction with limiting strips, it provides physical guidance to prevent horizontal deviation.
It achieves uniform hot air distribution within the drying chamber, improving drying efficiency and quality, and ensuring high equipment reliability.
Smart Images
Figure CN224580623U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material drying technology, and more specifically to a hot air circulating drying device. Background Technology
[0002] Hot air circulating drying equipment is mainly used in industries such as food, chemical, pharmaceutical, agricultural product processing, textile, and ceramics for dehydration and drying of solid or semi-solid materials.
[0003] A search revealed Chinese patent CN217110274U, which discloses a hot air circulating drying device for inductor production. This device reduces the impact of external humid air on the device due to the inductor switch control door. However, when drying items, the device uses a single-sided air inlet pipe for blowing, which can easily create drying dead zones and fail to ensure uniform heating of the items, thus reducing the quality of drying. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a hot air circulating drying device to solve the problems existing in the background art.
[0005] This utility model provides the following technical solution: a hot air circulating drying device, including a box body, with partitions fixedly connected to the inner walls on both sides of the box body, the partitions dividing the internal space of the box body into an air inlet chamber and a drying chamber for drying items, two symmetrical perforated plates fixedly connected to the inner wall of the bottom of the box body and the lower surface of the partitions, forming a heating chamber between the two perforated plates and the inner walls on both sides of the box body, both of which are connected to the air inlet chamber, a blower fixedly connected to the outer wall of the top of the box body, and the blower outlet extending into the air chamber, symmetrical exhaust pipes fixedly connected to the outer wall of the top of the box body, and the bottom ends of the two exhaust pipes extending into the drying chamber, a heater fixedly connected to the inner wall of the top of the box body, and the heater heating rod extending into the heating chamber.
[0006] As a further embodiment of this utility model, two sets of limiting strips are fixedly connected to the opposite sides of the two perforated plates, and there are two in each set. The two limiting strips in the same set are slidably connected to a strip-shaped bracket, and multiple trays for carrying dried items are provided on the multiple strip-shaped brackets.
[0007] As a further embodiment of this utility model, a connecting frame is fixedly connected to the bottom end of multiple strip brackets, an embedded plate is fixedly connected to the middle position of the connecting frame, a wedge plate is fixedly connected to the lower surface of the embedded plate, a cavity is opened at the bottom of the box, a rotating shaft is rotatably connected to the top and bottom inner walls of the cavity through a bearing seat, a turntable is fixedly connected to the top end of the rotating shaft through the top inner wall of the box, a support rod for cooperating with the wedge plate is fixedly connected to the edge of the upper surface of the turntable, and a drive assembly for rotating the rotating shaft along the axial direction is provided at the bottom of the box.
[0008] As a further embodiment of this utility model, the drive assembly includes a gear disk fixedly connected to the outer wall of the rotating shaft, a drive motor fixedly connected to the bottom outer wall of the housing, and the output shaft of the drive motor passing through the bottom inner wall of the cavity and connected to a gear that cooperates with the gear disk via a coupling.
[0009] As a further embodiment of this utility model, the diameter of the gear disk is greater than the diameter of the gear, and the number of teeth of the gear is less than the number of teeth of the gear disk, thus forming a speed reduction transmission pair.
[0010] As a further embodiment of this utility model, a spherical groove is provided at the top of the support rod, and a rotating bead is rotatably connected in the spherical groove. The rotating bead is in contact with the wedge surface of the wedge plate.
[0011] As a further embodiment of this utility model, transparent windows are provided on both doors of the box body, and the two transparent windows are staggered vertically.
[0012] The technical effects and advantages of this utility model are as follows:
[0013] 1. In this invention, hot air is blown evenly upward or horizontally into the drying chamber through symmetrical perforated plates. This circulation method of air intake on both sides and exhaust in the middle effectively avoids the drying dead corners caused by traditional single-sided air supply, ensuring that the hot air is evenly distributed in the drying chamber and that the items are heated uniformly, thus significantly improving drying efficiency and drying quality.
[0014] 2. This utility model uses the combined use of support rods, wedge plates and drive components to move the dried material up and down in the drying chamber during the drying process. As the dried material moves, the contact surface between its surface and the hot air changes continuously, allowing the internal moisture to diffuse to the surface more quickly and be carried away by the hot air, thus accelerating the overall moisture evaporation rate.
[0015] 3. This utility model provides a physical guide track for the strip bracket by setting a limit strip, which forces it to move only in the vertical direction, prevents horizontal deviation or rotation, avoids collision between the strip bracket and the perforated plate, and ensures the reliability of continuous operation of the equipment. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0017] Figure 2 For the present utility model Figure 1 A schematic diagram of the side structure.
[0018] Figure 3 This is a schematic diagram of the internal structure of the box body of this utility model.
[0019] Figure 4 This utility model Figure 3 A schematic diagram of a localized explosion structure.
[0020] Figure 5 This utility model Figure 4 A magnified structural diagram of part A.
[0021] Figure 6 This utility model Figure 4 A schematic diagram of a localized explosion structure.
[0022] Figure 7 This utility model Figure 6 A magnified structural diagram of part B.
[0023] Figure 8 This is a partially enlarged structural diagram of the connecting frame of this utility model.
[0024] The attached diagram is labeled as follows: 1. Housing; 2. Blower; 3. Heater; 4. Exhaust pipe; 5. Partition plate; 6. Perforated plate; 7. Heating chamber; 8. Air inlet chamber; 9. Limiting strip; 10. Strip bracket; 11. Tray; 12. Connecting frame; 13. Cavity; 14. Rotating shaft; 15. Gear disc; 16. Drive motor; 17. Gear; 18. Embedded plate; 19. Turntable; 20. Support rod; 21. Spherical groove; 22. Rotating ball; 23. Wedge plate. Detailed Implementation
[0025] 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. 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.
[0026] Reference Figures 1-8This utility model provides a hot air circulating drying device, including a box body 1. Partitions 5 are fixedly connected to the inner walls on both sides of the box body 1, dividing the internal space of the box body 1 into an air inlet chamber 8 and a drying chamber for drying items. Two symmetrical perforated plates 6 are bolted to the bottom inner wall of the box body 1 and the lower surface of the partitions 5, forming a heating chamber 7 between the two perforated plates 6 and the inner walls on both sides of the box body 1. Both heating chambers 7 are connected to the air inlet chamber 8. A blower 2 is bolted to the top outer wall of the box body 1, with the blower 2's outlet extending into the air inlet chamber 8. Symmetrical exhaust pipes 4 are bolted to the top outer wall of the box body 1, with the bottom ends of both exhaust pipes 4 extending into the drying chamber. A heater 3 is bolted to the top inner wall of the box body 1, with the heater 3's heating rod extending into the heating chamber 7. Transparent windows are provided on both doors of the box body 1, and the two transparent windows are staggered vertically.
[0027] Specifically, after the dried items are placed, the heater 3 is turned on to heat the air in the heating chamber 7. Then, the blower 2 is started to blow gas from the outside into the air inlet chamber 8 to form an airflow. The airflow is blown into the heating chamber 7 through the air inlet chamber 8. When the airflow passes through the heating chamber 7, it is heated by the heater 3 inside. The heated airflow is blown into the drying chamber through the holes on the perforated plate 6 to air dry the items that need to be dried in the drying chamber. The airflow passes through the drying chamber and is discharged from the box 1 through the exhaust pipe 4 at the top to form an airflow circulation.
[0028] During use, hot air is blown evenly upwards or horizontally into the drying chamber through symmetrical perforated plates 6. This circulation method of air intake on both sides and exhaust in the middle effectively avoids the drying dead zones caused by traditional single-sided air supply, ensuring that the hot air is evenly distributed in the drying chamber and that the items are heated uniformly, which significantly improves drying efficiency and drying quality.
[0029] It should be noted that heater 3 is existing technology and includes multiple heating rods, electrical control junction box, frame and mounting bracket and temperature sensor interface, etc. Those skilled in the art can set it according to actual needs, which will not be described in detail here.
[0030] It should be noted that blower 2 is existing technology, and those skilled in the art can set it according to actual needs, which will not be elaborated here.
[0031] In this utility model, two sets of limiting strips 9 are fixedly connected to the opposite sides of the two perforated plates 6 by bolts, and there are two in each set. The two limiting strips 9 in the same set are slidably connected to the strip brackets 10, and multiple trays 11 for carrying dried items are provided on the multiple strip brackets 10.
[0032] The specific limit bar 9 provides a physical guide track for the strip bracket 10, forcibly constraining it to move only in the vertical direction, preventing horizontal deviation or rotation, avoiding collision between the strip bracket 10 and the orifice plate 6, and ensuring the reliability of continuous equipment operation.
[0033] When using the equipment, first place the items that need to be dried on the multiple trays 11 in sequence, and then close the door after the items have been placed.
[0034] Further, multiple strip brackets 10 are bolted to the bottom of a connecting frame 12. An embedded plate 18 is bolted to the middle of the connecting frame 12. A wedge plate 23 is bolted to the lower surface of the embedded plate 18. A cavity 13 is opened at the bottom of the housing 1. The top and bottom inner walls of the cavity 13 are directly rotatably connected to a rotating shaft 14 through a bearing seat. The top of the rotating shaft 14 passes through the top inner wall of the housing 1 and is bolted to a turntable 19. A support rod 20 that works with the wedge plate 23 is bolted to the edge of the upper surface of the turntable 19. A drive assembly is provided at the bottom of the housing 1 to rotate the rotating shaft 14 along the axial direction.
[0035] The top of the support rod 20 is provided with a spherical groove 21, and a rotating bead 22 is rotatably connected in the spherical groove 21. The rotating bead 22 contacts the wedge surface of the wedge plate 23.
[0036] The specific use of the support rod 20, wedge plate 23 and drive assembly allows the dried material to move up and down in the drying chamber during the drying process. As the dried material moves, the contact surface between its surface and the hot air changes continuously, allowing the internal moisture to diffuse to the surface more quickly and be carried away by the hot air, thus accelerating the overall moisture evaporation rate.
[0037] In this utility model, the drive assembly includes a gear disk 15 fixedly connected to the outer circumference of the rotating shaft 14 by bolts, and a drive motor 16 fixedly connected to the bottom outer wall of the housing 1 by bolts. The output shaft of the drive motor 16 passes through the bottom inner wall of the cavity 13 and is connected to a gear 17 that works with the gear disk 15 through a coupling. The diameter of the gear disk 15 is larger than the diameter of the gear 17, and the number of teeth of the gear 17 is less than the number of teeth of the gear disk 15, forming a speed reduction transmission pair for speed reduction transmission.
[0038] Specifically, during the drying process, the drive motor 16 is started, which drives the gear 17 to rotate. While the gear 17 rotates, it drives the gear disk 15 that meshes with it to rotate, which in turn drives the turntable 19 on top of the turntable 14 to rotate, which in turn causes the support rod 20 on the turntable 19 to rotate. Since the rotating ball 22 on the top of the support rod 20 is in contact with the wedge surface of the wedge plate 23, the rotating ball 22 rotates in a circle and pushes the wedge plate 23 up and down, which in turn pushes multiple strip brackets 10 up and down along the limiting strip 9 through the connecting frame 12. During the up and down movement of the strip brackets 10, the trays 11 on them move up and down, which in turn causes the dried material to move inside the box 1.
[0039] It should be noted that the drive motor 16 is existing technology, and those skilled in the art can set it according to actual needs, which will not be elaborated here.
[0040] The use of this utility model involves the following steps:
[0041] S1: When using, first place the items to be dried on multiple trays 11 in sequence, and close the door after the items to be dried are placed;
[0042] S2: After placing the dried items, turn on the heater 3 to heat the air in the heating chamber 7. Then, start the blower 2 to blow gas from the outside into the air inlet chamber 8 to form an airflow. The airflow is blown into the heating chamber 7 through the air inlet chamber 8. When the airflow passes through the heating chamber 7, it is heated by the heater 3 inside. The heated airflow is blown into the drying chamber through the holes on the perforated plate 6 to dry the items that need to be dried in the drying chamber. The airflow passes through the drying chamber and is discharged from the box 1 through the exhaust pipe 4 at the top to form an airflow circulation.
[0043] S3: During the drying process, the drive motor 16 is started, which drives the gear 17 to rotate. While the gear 17 is rotating, it drives the gear disk 15 that meshes with it to rotate. This, in turn, drives the turntable 19 on top of the turntable 14 to rotate, which in turn causes the support rod 20 on the turntable 19 to rotate. Since the rotating bead 22 on the top of the support rod 20 is in contact with the wedge surface of the wedge plate 23, the rotating bead 22 moves up and down against the wedge plate 23 while rotating in a circular motion. This pushes multiple strip brackets 10 up and down along the limiting strip 9 through the connecting frame 12. During the up and down movement of the strip brackets 10, the trays 11 on them move up and down, thus allowing the dried material to move within the chamber 1.
[0044] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.
[0045] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.
[0046] 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 hot air circulation drying apparatus comprising a cabinet (1), characterized in that: The inner walls of both sides of the box (1) are fixedly connected with partitions (5), which divide the internal space of the box (1) into an air inlet chamber (8) and a drying chamber for drying items. The inner wall of the bottom of the box (1) is fixedly connected with two symmetrical perforated plates (6) to the lower surface of the partitions (5). The two perforated plates (6) and the inner walls of both sides of the box (1) form a heating chamber (7). Both heating chambers (7) are connected to the air inlet chamber (8). A blower (2) is fixedly connected to the outer wall of the top of the box (1), and the air outlet of the blower (2) extends into the air inlet chamber (8). Symmetrical exhaust pipes (4) are fixedly connected to the outer wall of the top of the box (1), and the bottom ends of the two exhaust pipes (4) extend into the drying chamber. A heater (3) is fixedly connected to the inner wall of the top of the box (1), and the heating rod of the heater (3) extends into the heating chamber (7).
2. The hot air circulation drying apparatus according to claim 1, characterized by: Two sets of limiting strips (9) are fixedly connected to the opposite sides of the two perforated plates (6), and there are two in each set. The two limiting strips (9) in the same set are slidably connected to the strip brackets (10). Multiple trays (11) for carrying dried items are provided on the multiple strip brackets (10).
3. The hot air circulation drying apparatus according to claim 2, characterized by: A connecting frame (12) is fixedly connected to the bottom of multiple strip brackets (10). An embedded plate (18) is fixedly connected to the middle position of the connecting frame (12). A wedge plate (23) is fixedly connected to the lower surface of the embedded plate (18). A cavity (13) is opened at the bottom of the box (1). A rotating shaft (14) is directly rotatably connected to the top inner wall and bottom inner wall of the cavity (13) through a bearing seat. A turntable (19) is fixedly connected to the top inner wall of the box (1) through the top of the rotating shaft (14). A support rod (20) that works with the wedge plate (23) is fixedly connected to the edge of the upper surface of the turntable (19). A drive assembly for rotating the rotating shaft (14) along the axial direction is provided at the bottom of the box (1).
4. The hot air circulation drying apparatus according to claim 3, characterized by: The drive assembly includes a gear disk (15) fixedly connected to the outer circumference of the rotating shaft (14), and a drive motor (16) fixedly connected to the bottom outer wall of the housing (1). The output shaft of the drive motor (16) passes through the bottom inner wall of the cavity (13) and is connected to a gear (17) that works with the gear disk (15) via a coupling.
5. A hot air circulating drying apparatus according to claim 4, wherein: The diameter of the gear disk (15) is greater than the diameter of the gear (17), and the number of teeth of the gear (17) is less than the number of teeth of the gear disk (15), thus forming a speed reduction transmission pair.
6. The hot air circulating drying apparatus according to claim 3, characterized by: The top end of the support rod (20) is provided with a spherical groove (21), and a rotating bead (22) is rotatably connected in the spherical groove (21). The rotating bead (22) is in contact with the wedge surface of the wedge plate (23).
7. The hot air circulating drying device according to claim 1, characterized in that: The two doors of the box body (1) are provided with transparent windows, and the two transparent windows are staggered vertically.