Hot air circulation structure and traditional Chinese medicinal material drying device

Abstract

This utility model relates to the field of drying machine technology and discloses a hot air circulation structure, including a hot air circulation fan installed on one side of the outside of the drying chamber, a heated air inlet pipe installed at the output end of the hot air circulation fan, and a return hose installed at the input end of the hot air circulation fan. A connecting pipe is fixedly connected to the upper side wall of the drying chamber, and the other end of the connecting pipe is fixedly connected to the end of the return hose away from the hot air circulation fan via a flange. It also provides a Chinese herbal medicine drying device, including the above-mentioned hot air circulation structure, a drying chamber, and a control cabinet. The lower end of the drying chamber is fixedly connected to the end of the heated air inlet pipe away from the hot air circulation fan, and one side of the upper end of the drying chamber is fixedly connected to the end of the connecting pipe away from the return hose. This hot air circulation structure and Chinese herbal medicine drying device, through a sliding movable cleaning component (moving ring, fan-shaped plate, etc.), can scrape and clean the Chinese herbal medicine residue remaining on the inner wall of the connecting pipe, reducing downtime for maintenance.

Description

Technical Field

[0001] This utility model relates to the field of drying technology, specifically to a hot air circulation structure and a drying device for Chinese medicinal materials. Background Technology

[0002] A Chinese herbal medicine dryer is a device specifically designed for drying Chinese herbal medicines. By controlling parameters such as temperature, humidity, and wind speed, it helps remove moisture from the herbs, thereby achieving the goal of long-term preservation and, to a certain extent, maintaining the effective components of the herbs.

[0003] The patent with publication number CN222048352U discloses a Chinese herbal medicine dryer, including a hot air blower, a drying chamber, and a sealed door. A tray support is fixedly installed on the inner wall of the drying chamber. A tray limiting block and a tray positioning block are slidably connected in a slide groove. A mesh tray is slidably installed between the tray limiting block and the tray positioning block. A flipping component is fixedly connected to the motor output end. A cavity is opened in the tray support, and the flipping component slides in the cavity. This dryer, by setting movable tray limiting blocks and tray positioning blocks on the tray support, allows the mesh tray to be accurately placed on the tray support. By using the flipping component, the tray limiting blocks and tray positioning blocks can slide in the slide groove, causing the mesh tray to shake. Through the cooperation of the flipping component and the protrusion, the Chinese herbal medicine on the tray is effectively flipped, eliminating the need to open the dryer to flip the medicine, reducing energy consumption, ensuring that the Chinese herbal medicine is heated evenly during the drying process, avoiding local overheating or under-drying of the Chinese herbal medicine, and improving the drying effect of the Chinese herbal medicine.

[0004] However, the aforementioned dryers still have the following problems in actual use: When drying Chinese medicinal herbs, a hot air circulation structure is usually used to send heat into the dryer and remove the moisture generated during the drying process. The air is then reheated and sent back into the dryer (during which a dehumidification structure is used to expel the moisture first, and the remaining air is heated), thus achieving hot air circulation. However, because the roots or some epidermis of the Chinese medicinal herbs easily move with the hot air during drying, this can block the exhaust pipe between the dryer and the circulating fan of the hot air circulation structure, and may even block the fan impeller or the air intake pipe between the fan and the dryer.

[0005] To avoid the above situation, most manufacturers simply install filter plates in the pipe between the dryer and the hot air circulation fan. However, the filter plates can become clogged during continuous use. Even if the filter plates are detachably connected by bolts or other means, the waste residue inside the pipe is not easy to clean. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a hot air circulation structure and a Chinese herbal medicine drying device, which makes it easier to clean the inside of the pipe between the drying box and the return hose.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hot air circulation structure, including a hot air circulation fan installed on one side of the outside of the drying chamber, a heating air inlet pipe installed at the output end of the hot air circulation fan, and a return hose installed at the input end of the hot air circulation fan. A connecting pipe is fixedly connected to the side wall of the upper end of the drying chamber. The other end of the connecting pipe is fixedly connected to the end of the return hose away from the hot air circulation fan through a flange. A movable cleaning component is slidably connected to the inner wall of the connecting pipe. A filter screen is connected to the inner wall of the flange of the connecting pipe near the return hose and the inside of the movable cleaning component through bolt No. 1. The drying chamber, the connecting pipe, the return hose, the hot air circulation fan, and the heating air inlet pipe are internally connected. An auxiliary column for stabilizing the connecting pipe is fixedly connected to the side wall of the connecting pipe near the return hose.

[0008] Furthermore, the mobile cleaning assembly includes a mobile ring, several rotating shafts, and several sector plates. The outer wall of the mobile ring is slidably connected to the inner wall of the connecting pipe. The side walls of the mobile ring are respectively sleeved and fixedly connected to one end of several rotating shafts. The other ends of several rotating shafts are respectively fixedly connected to one end of several sector plates. The other ends of several sector plates abut against each other. The filter screen is located inside the mobile ring.

[0009] Furthermore, several magnets are fixedly connected to the inner wall of the drying oven near the connecting pipe and to the side of several sector plates, and the magnets on the drying oven and the magnets on the sector plates attract each other.

[0010] Furthermore, a support bar is fixedly connected to the inner wall of the moving ring at the end away from the fan-shaped plate, a central tube is fixedly connected to the middle of the support bar, the outer wall of the other end of the central tube abuts against the end of several fan-shaped plates away from the rotating shaft, and the filter screen is sleeved on the outside of the central tube near the support bar.

[0011] Furthermore, both ends of the central tube are fixedly connected with pull ropes, the length of which is not less than the length of the connecting tube.

[0012] Furthermore, each of the two pull ropes has a pull ring fixedly connected to the end furthest from the central tube.

[0013] Furthermore, a hook is fixedly connected to the inner wall of the connecting pipe near the flange end, and the pull ring near the flange is connected to the hook.

[0014] This utility model also provides a Chinese herbal medicine drying device, including the above-mentioned hot air circulation structure, and also includes a drying box and a control cabinet. The lower end of the drying box is fixedly connected to the end of the heating air inlet pipe away from the hot air circulation fan, and one side of the upper end of the drying box is fixedly connected to the end of the connecting pipe away from the return hose. The control cabinet is fixedly connected to the outer wall of the heating air inlet pipe.

[0015] Furthermore, a drying cover is connected to the upper surface of the drying oven by bolt No. 2, and the connecting pipe is located below the drying cover.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This hot air circulation structure and Chinese herbal medicine drying device can scrape and clean the residue of Chinese herbal medicine remaining on the inner wall of the connecting pipe through a sliding movable cleaning component (moving ring, fan-shaped plate, etc.), reducing downtime for maintenance.

[0018] 2. In normal operation, the fan-shaped plate of this hot air circulation structure and Chinese herbal medicine drying device can rotate to fit the pipe wall to avoid resistance to hot air circulation. During cleaning, the fan-shaped plate is spliced ​​into a whole scraper to ensure that there are no residual impurities on the inner wall of the pipe.

[0019] 3. This hot air circulation structure and Chinese herbal medicine drying device uses magnets to fix the position of the fan-shaped plate, preventing it from rotating unexpectedly due to vibration or airflow impact, thus ensuring the stability of the equipment during operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall appearance of the present utility model;

[0021] Figure 2 This is a schematic diagram of the overall appearance of the present invention from another perspective;

[0022] Figure 3 This is a detailed connection diagram of the components of this utility model, including the return hose, connecting pipe, and mobile cleaning assembly;

[0023] Figure 4 This is a schematic diagram of the internal structure of the connecting pipe of this utility model;

[0024] Figure 5 This is a detailed connection diagram of the components of this utility model, including the moving ring, rotating shaft, and sector plate.

[0025] Figure 6 This is a detailed connection diagram of the components of this utility model, including the moving ring, support bar, and filter screen.

[0026] In the diagram: 1. Drying oven; 2. Control cabinet; 3. Drying cover; 4. Heating air inlet pipe; 5. Hot air circulation fan; 6. Return hose; 7. Connecting pipe; 8. Magnet; 9. Fan-shaped plate; 10. Pull rope; 11. Pull ring; 12. Hook; 13. Moving ring; 14. Rotating shaft; 15. Central tube; 16. Support bar; 17. Filter screen; 18. Column. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Please see Figures 1 to 6 A hot air circulation structure includes a hot air circulation fan 5 installed on one side of the outside of a drying chamber 1, a heating air inlet pipe 4 installed at the output end of the hot air circulation fan 5, and a return hose 6 installed at the input end of the hot air circulation fan 5. A connecting pipe 7 is fixedly connected to the side wall at the upper end of the drying chamber 1. The other end of the connecting pipe 7 is fixedly connected to the end of the return hose 6 away from the hot air circulation fan 5 through a flange. A movable cleaning component is slidably connected to the inner wall of the connecting pipe 7. A filter screen 17 is connected to the inner wall of the flange of the connecting pipe 7 near the return hose 6 and the inside of the movable cleaning component through a No. 1 bolt. The drying chamber 1, the connecting pipe 7, the return hose 6, the hot air circulation fan 5, and the heating air inlet pipe 4 are internally connected. An auxiliary connecting pipe 7 stabilizing column 18 is fixedly connected to the side wall of the connecting pipe 7 near the return hose 6.

[0029] like Figures 1 to 6 As shown, when the hot air circulation structure and Chinese herbal medicine drying device of this utility model are in use, the hot air circulation fan 5 is started to blow air into the heating inlet pipe 4, and then the air can be heated by the heating element inside the heating inlet pipe 4 (this is the prior art, such as an electric heating tube, which is installed at the bottom or side of the box and generates heat through resistance heating; or a steam radiator, which heats the air by releasing heat through steam condensation). After that, the heated hot air enters the drying box 1, and then the Chinese herbal medicines spread out on the mesh of the drying box 1 can be dried.

[0030] The heated gas rises to the top inside the drying chamber 1, and then enters the connecting pipe 7. From the connecting pipe 7, it enters the return hose 6 (in the prior art, if there is a dehumidification structure in the returned gas, the dehumidification mechanism is usually located at the return hose 6, and the return hose 6 is a hose, which will not be described in detail here), the hot air circulation fan 5, and the heated air inlet pipe 4 to achieve circulation.

[0031] After continuous use for a period of time, most of the Chinese herbal medicine residue will be blocked by the two filter screens 17, but some residue will still remain in the connecting pipe 7. When it is necessary to stop the machine for cleaning after a period of use, simply separate the flange between the connecting pipe 7 and the return hose 6, then loosen the No. 1 bolt and remove the two filter screens 17. Then, by pulling the moving cleaning component, the moving cleaning component can be moved inside the connecting pipe 7, and the residue blocked inside the connecting pipe 7 can be cleaned and scraped out by the moving cleaning component.

[0032] In addition, if there is residue inside the return hose 6 after the connecting pipe 7 is separated from the return hose 6, the other end of the return hose 6 can be separated from the heating air inlet pipe 4, and then the inside of the return hose 6 can be cleaned.

[0033] As a preferred embodiment of this utility model, the movable cleaning assembly includes a movable ring 13, a plurality of rotating shafts 14 and a plurality of sector plates 9. The outer wall of the movable ring 13 is slidably connected to the inner wall of the connecting pipe 7. The side walls of the movable ring 13 are respectively sleeved and fixedly connected to one end of the plurality of rotating shafts 14. The other ends of the plurality of rotating shafts 14 are respectively fixedly connected to one end of the plurality of sector plates 9. The other ends of the plurality of sector plates 9 abut against each other. The filter screen 17 is located inside the movable ring 13.

[0034] More specifically, when gas is flowing normally inside the connecting pipe 7, the sector plate 9 will rotate upward around the pivot 14, thereby avoiding obstruction of the gas flow between the moving ring 13 and the connecting pipe 7 by the sector plate 9.

[0035] When cleaning the inside of the connecting pipe 7 is required, simply loosen the flange between the connecting pipe 7 and the return hose 6, and then rotate the several sector plates 9 located at one end of the drying chamber 1 of the connecting pipe 7 so that the several sector plates 9 are spliced ​​together to form a circle (e.g., Figure 3 As shown), the hollow section of the connecting pipe 7 can be completely blocked. Then, the moving ring 13 and the sector plate 9 are pulled or pushed to move inside the connecting pipe 7. In the process of moving, the residue inside the connecting pipe 7 can be pushed out from the other end of the connecting pipe 7.

[0036] As a preferred embodiment of this utility model, several magnets 8 are fixedly connected to the inner wall of the drying box 1 near the connecting pipe 7 and to the side of several fan-shaped plates 9 adjacent to each other, and the magnets 8 on the drying box 1 and the magnets 8 on the fan-shaped plates 9 attract each other.

[0037] More specifically, by setting up magnet 8, the sector plate 9 can be attracted to the connecting pipe 7 when it is not blocking it, thus preventing the sector plate 9 from rotating back and blocking the connecting pipe 7 due to vibration or other reasons.

[0038] As a preferred embodiment of this utility model, a support strip 16 is fixedly connected to the inner wall of the moving ring 13 away from the fan-shaped plate 9, a central tube 15 is fixedly connected to the middle of the support strip 16, and the outer wall of the other end of the central tube 15 abuts against the end of several fan-shaped plates 9 away from the rotating shaft 14. The filter screen 17 is sleeved on the outside of the central tube 15 near the support strip 16.

[0039] More specifically, by setting the support bar 16 and the central tube 15, a support can be provided for the middle part of the combined sector plates 9, thereby improving the stability of the sector plates 9.

[0040] As a preferred embodiment of this utility model, both ends of the central tube 15 are fixedly connected with pull ropes 10, and the length of the pull ropes 10 is not less than the length of the connecting tube 7.

[0041] More specifically, by setting up the pull rope 10, when it is necessary to clean the inside of the connecting tube 7, simply pull the pull rope 10 to move the moving ring 13 from one end of the connecting tube 7 to the other end.

[0042] As a preferred embodiment of this utility model, each of the two pull ropes 10 has a pull ring 11 fixedly connected to the end away from the central tube 15.

[0043] More specifically, by setting the pull ring 11, it is easier to pull the pull rope 10.

[0044] As a preferred embodiment of this utility model, a hook 12 is fixedly connected to the inner wall of the connecting pipe 7 near the flange end, and the pull ring 11 near the flange is connected to the hook 12.

[0045] More specifically, by setting the hook 12, the pull ring 11 located at the end away from the drying chamber 1 can be restricted, preventing the pull ring 11 and pull rope 10 at this end from retracting into the connecting pipe 7 and affecting the subsequent cleaning pull.

[0046] This utility model also provides a Chinese herbal medicine drying device, including the above-mentioned hot air circulation structure, and also includes a drying box 1 and a control cabinet 2. The lower end of the drying box 1 is fixedly connected to the end of the heating air inlet pipe 4 away from the hot air circulation fan 5, and one side of the upper end of the drying box 1 is fixedly connected to the end of the connecting pipe 7 away from the return hose 6. The control cabinet 2 is fixedly connected to the outer wall of the heating air inlet pipe 4.

[0047] The upper surface of the drying oven 1 is connected to the drying cover 3 by bolt No. 2, and the connecting pipe 7 is located below the drying cover 3.

[0048] More specifically, by setting the drying cover 3, it can be ensured that the hot airflow entering the drying chamber 1 will not overflow directly from the opening at the top of the drying chamber 1, so that the gas returning to the hot circulation fan 5 and the heating air inlet pipe 4 can still retain residual heat, thus realizing the utilization of residual heat.

[0049] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A hot air circulation structure, comprising a hot air circulation fan (5) installed on one side of the outside of a drying chamber (1), a heating air inlet pipe (4) installed at the output end of the hot air circulation fan (5), and a return hose (6) installed at the input end of the hot air circulation fan (5), characterized in that: A connecting pipe (7) is fixedly connected to the side wall of the upper end of the drying box (1). The other end of the connecting pipe (7) is fixedly connected to the end of the return hose (6) away from the hot circulation fan (5) through a flange. A movable cleaning component is slidably connected to the inner wall of the connecting pipe (7). A filter screen (17) is connected to the inner wall of the flange of the connecting pipe (7) near the return hose (6) and the inside of the movable cleaning component through bolt No.

1. The drying box (1), connecting pipe (7), return hose (6), hot circulation fan (5) and heating air inlet pipe (4) are internally connected. An auxiliary connecting pipe (7) stable column (18) is fixedly connected to the side wall of the connecting pipe (7) near the return hose (6).

2. The hot air circulation structure according to claim 1, characterized in that: The mobile cleaning assembly includes a mobile ring (13), several rotating shafts (14) and several sector plates (9). The outer wall of the mobile ring (13) is slidably connected to the inner wall of the connecting pipe (7). The side walls of the mobile ring (13) are respectively sleeved and fixedly connected to one end of several rotating shafts (14). The other end of several rotating shafts (14) is fixedly connected to one end of several sector plates (9). The other ends of several sector plates (9) abut against each other. The filter screen (17) is located inside the mobile ring (13).

3. The hot air circulation structure according to claim 2, characterized in that: Several magnets (8) are fixedly connected to the inner wall of the drying box (1) near the end of the connecting pipe (7) and to the side adjacent to several sector plates (9), and the magnets (8) on the drying box (1) and the magnets (8) on the sector plates (9) attract each other.

4. A hot air circulation structure according to claim 2 or 3, characterized in that: A support strip (16) is fixedly connected to the inner wall of the moving ring (13) away from the fan-shaped plate (9). A central tube (15) is fixedly connected to the middle of the support strip (16). The outer wall of the other end of the central tube (15) abuts against the end of several fan-shaped plates (9) away from the rotating shaft (14). The filter screen (17) is sleeved on the outside of the central tube (15) near the support strip (16).

5. A hot air circulation structure according to claim 4, characterized in that: Both ends of the central tube (15) are fixedly connected to pull ropes (10), and the length of the pull ropes (10) is not less than the length of the connecting tube (7).

6. A hot air circulation structure according to claim 5, characterized in that: Both pull ropes (10) have a pull ring (11) fixedly connected to the end away from the central tube (15).

7. A hot air circulation structure according to claim 3, characterized in that: The inner wall of the connecting pipe (7) near the flange end is fixedly connected to a hook (12), and the pull ring (11) near the flange is connected to the hook (12).

8. A drying device for traditional Chinese medicinal materials, characterized in that: The hot air circulation structure includes any one of claims 1-7 above, and further includes a drying box (1) and a control cabinet (2). The lower end of the drying box (1) is fixedly connected to the end of the heating air inlet pipe (4) away from the hot air circulation fan (5). One side of the upper end of the drying box (1) is fixedly connected to the end of the connecting pipe (7) away from the return hose (6). The control cabinet (2) is fixedly connected to the outer wall of the heating air inlet pipe (4).

9. A Chinese medicinal herb drying device according to claim 8, characterized in that: The upper surface of the drying oven (1) is connected to the drying cover (3) by bolt No. 2, and the connecting pipe (7) is located below the drying cover (3).

Images