A heat recovery type continuous drying device for Chinese herbal medicine

Abstract

This utility model discloses a heat recovery type continuous drying device for traditional Chinese medicine, comprising: an oven, the top of which is connected to a connecting pipe, and the end of the connecting pipe away from the oven is integrally connected to a return air pipe, a vortex fan is installed at the end of the return air pipe away from the connecting pipe, a water vapor filter box is installed on one side of the vortex fan, and a filter funnel is installed at the lower end of the water vapor filter box; the top of the oven is connected to the connecting pipe and the return air pipe, and the vortex fan, in conjunction with the connecting pipe and the return air pipe, draws the high-temperature water vapor from inside the oven out of the oven, and introduces the water vapor into the water vapor filter box through the vortex fan, and the water vapor is absorbed by the moisture-absorbing perforated plate inside the water vapor filter box and the sponge material of the moisture-absorbing perforated plate. At the same time, the moisture is purified by the moisture-absorbing perforated plate and the sponge material, and then returns to the inside of the oven through the air inlet pipe after being absorbed.

Description

Technical Field

[0001] This utility model relates to the field of traditional Chinese medicine preparation technology, specifically a heat recovery type continuous drying device for traditional Chinese medicine. Background Technology

[0002] Traditional Chinese medicine (TCM) is mainly composed of plant-based medicines (roots, stems, leaves, and fruits), animal-based medicines (internal organs, skin, bones, and other organs), and mineral-based medicines. Because plant-based medicines make up the majority of TCM, it is also called TCM herbal medicine. There are about 5,000 kinds of TCM used in various parts of China. The processing of TCM materials is an indispensable and important link in the production of TCM materials, providing commercial medicinal materials for the preparation of TCM decoction pieces and the production of pharmaceuticals.

[0003] A traditional Chinese medicine drying device is disclosed in CN207180162U, including a conveyor belt with a support on its outer side. A drying chamber and a preheating chamber are installed on the outer side of the conveyor belt. A fan is installed at the upper end of the drying chamber, and an electric heating wire is installed at the air outlet of the fan. Multiple first nozzles are provided on the inner side of the drying chamber. An induced draft fan is installed at the upper end of the preheating chamber. The air inlet of the induced draft fan is connected to a second connecting pipe, and the air outlet of the induced draft fan is connected to an activated carbon filter box. Multiple second nozzles are provided on the inner side of the preheating chamber. In use, the traditional Chinese medicine is placed directly on the conveyor belt, and automatic drying is achieved by the rotation of the conveyor belt. The operation is convenient. The induced draft fan can recover and utilize energy. The second nozzles preheat the traditional Chinese medicine, which accelerates the subsequent drying efficiency and saves time.

[0004] Traditional Chinese medicine herbs require continuous drying using conveyor belts or conveyor belts. Therefore, conveyor belts and conveyor belts play an important role in the drying of traditional Chinese medicine herbs. In the aforementioned drying equipment for traditional Chinese medicine herbs, water vapor evaporates and rises inside the drying equipment due to the drying process. To prevent water vapor from accumulating into water droplets at the top of the drying equipment, general drying equipment is equipped with dehumidification channels and dehumidification fans to dehumidify the interior of the drying equipment. However, the extracted high-temperature water vapor is not recovered, which is not conducive to the recovery and utilization of high-temperature water vapor. Effective heat recovery is not achieved, resulting in the non-circulation of heat energy resources and increased energy consumption.

[0005] Therefore, those skilled in the art have provided a heat recovery type continuous drying device for traditional Chinese medicine to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to provide a heat recovery type continuous drying device for Chinese herbal medicines, in order to solve the problem mentioned in the background art that existing Chinese herbal medicine drying devices accumulate high-temperature water vapor inside during continuous drying, and fail to effectively recover the high-temperature water vapor during discharge, resulting in a waste of heat energy.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A heat recovery type continuous drying device for traditional Chinese medicine includes: an oven, a connecting pipe connected to the top of the oven, and an integrated return air pipe connected to the end of the connecting pipe away from the oven; a vortex fan installed at the end of the return air pipe away from the connecting pipe; a water vapor filter box installed on one side of the vortex fan, and a filter bucket installed at the lower end of the water vapor filter box; an air inlet pipe connected below the filter bucket; an inner box installed inside the oven, and a conveyor belt installed inside the inner box; a return conveyor belt installed below the conveyor belt; a roller conveyor for driving the return conveyor belt installed inside the return conveyor belt; and a chute installed on the outer side of the upper end of the return conveyor belt.

[0009] As a further embodiment of this utility model: an air inlet pipe is connected to the right back of the drying oven, and a vortex fan II is installed at the end of the air inlet pipe away from the drying oven, and a heating fan is installed on one side of the vortex fan II.

[0010] As a further improvement of this utility model: an insulation layer is provided between the inner box and the oven, and the insulation layer is interconnected with the air inlet pipe.

[0011] As a further improvement of this utility model: the inner box and the connecting pipe are interconnected, and the inner box and the air inlet pipe are interconnected.

[0012] As a further embodiment of this utility model: the left side of the conveyor belt and the return conveyor belt are parallel to each other, and the right side of the return conveyor belt is tilted at an angle of forty degrees.

[0013] As a further embodiment of this utility model: the surface of the return conveyor belt is fixedly provided with a textured plate, and the external structure of the textured plate is in the shape of a "V" shape. The upper end of the return conveyor belt is connected to the starting end of the conveyor belt through a chute.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The drying oven adopts a long rectangular structure, which extends the conveyor belt length inside. With sufficient length space to install the conveyor belt, the conveyor belt works in conjunction with the return conveyor belt. The conveyor belt transports the medicinal materials from one side to the other side, and then, with the cooperation of the return conveyor belt and chute, the medicinal materials are transported back to the input end of the conveyor belt. In this way, the medicinal materials are constantly circulating inside the drying oven, allowing them to move and dry inside the oven, thereby improving the drying effect of the medicinal materials.

[0016] 2. A connecting pipe is connected to the top of the oven, which is interconnected with the return air duct. A vortex fan is installed at one end of the return air duct. The vortex fan, in conjunction with the connecting pipe and the return air duct, draws the high-temperature water vapor out of the oven and introduces it into the water vapor filter box. The water vapor is absorbed by the moisture-absorbing perforated plate inside the water vapor filter box, and the sponge material of the moisture-absorbing perforated plate absorbs the water vapor. At the same time, the moisture is purified by the moisture-absorbing perforated plate and the sponge material. After being absorbed, the moisture is purified by the filter funnel below and then returns to the inside of the oven through the air inlet pipe, thereby realizing the heat recovery and utilization of high-temperature water vapor and saving heat energy loss. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a heat recovery type continuous drying device for traditional Chinese medicine.

[0018] Figure 2 This is a schematic diagram of the connection structure of the connecting pipe and the air inlet pipe of a heat recovery type continuous drying device for Chinese herbal medicines.

[0019] Figure 3 This is a schematic diagram of the conveyor belt and return conveyor belt in a heat recovery type continuous drying device for Chinese herbal medicines.

[0020] Figure 4 This is a schematic diagram of the reflux conveyor belt in a heat recovery type continuous drying device for Chinese herbal medicines.

[0021] Figure 5 This is a schematic diagram of the water vapor filter box in a heat recovery type continuous drying device for traditional Chinese medicine.

[0022] Figure 6 This is a schematic diagram of the internal cross-sectional structure of a water vapor filter box in a heat recovery type continuous drying device for traditional Chinese medicine.

[0023] Figure 7 This is a schematic diagram of the internal structure of the drying oven in a heat recovery type continuous drying device for traditional Chinese medicine.

[0024] In the diagram: 1. Oven; 101. Inner chamber; 102. Insulation jacket; 2. Connecting pipe; 3. Return air duct; 4. Vortex fan one; 5. Water vapor filter box; 6. Air inlet duct; 7. Heating fan; 8. Vortex fan two; 9. Air inlet duct; 10. Conveyor belt; 11. Return conveyor belt; 12. Roller conveyor; 13. Chute; 14. Textured plate; 15. Moisture-absorbing perforated plate; 16. Filter hopper. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1 to 7 This utility model provides a heat recovery type continuous drying device for traditional Chinese medicine, including: an oven 1, a connecting pipe 2 connected to the top of the oven 1, and an integrated return air pipe 3 connected to the end of the connecting pipe 2 away from the oven 1, a vortex fan 4 installed at the end of the return air pipe 3 away from the connecting pipe 2, a water vapor filter box 5 installed on one side of the vortex fan, a filter hopper 16 installed at the lower end of the water vapor filter box 5, an air inlet pipe 9 connected below the filter hopper 16, an air inlet pipe 6 connected to the right back of the oven 1, a vortex fan 8 installed at the end of the air inlet pipe 6 away from the drying oven, a heating fan 7 installed on one side of the vortex fan 8, an insulation jacket 102 provided between the inner box 101 and the oven 1, the insulation jacket 102 being interconnected with the air inlet pipe 9, the inner box 101 being interconnected with the connecting pipe 2, and the inner box 101 being interconnected with the air inlet pipe 6. External air is drawn in by the heating fan 7 and heated. After heating, the air is further pressurized by the second vortex fan 8, forming a directional airflow that enters the oven 1 through the air inlet pipe 6. This raises the internal temperature of the oven 1, generating high-temperature steam. The high-temperature steam is then drawn out by the first vortex fan 4 through the connecting pipe 2 and the return air pipe 3. After being directionally rotated by the vortex fan 4, the steam is transported to the steam filter box 5, where it is filtered and heated. The moisture-absorbing perforated plate 15 absorbs water vapor, and the porosity of the moisture-absorbing perforated plate 15 allows air to pass through. After the water vapor is absorbed, the warm air will return to the oven 1 through the air inlet pipe 9. The oven 1 is equipped with an inner chamber 101, and an insulation jacket 102 is provided between the inner chamber 101 and the oven 1. The heat energy of the recovered high-temperature water vapor returns to the insulation jacket 102, thereby keeping the interior of the oven 1 warm and maintaining a stable temperature inside the oven 1. The temperature rises steadily and faster, with less heat loss.

[0027] The oven 1 has an inner box 101 installed inside, and a conveyor belt 10 is installed inside the inner box 101. A return conveyor belt 11 is installed below the conveyor belt 10. A roller conveyor 12 for driving the return conveyor belt 11 is installed inside the return conveyor belt 11. A chute 13 is installed on the outer side of the upper end of the return conveyor belt 11. The left sides of the conveyor belt 10 and the return conveyor belt 11 are parallel to each other, and the right side of the return conveyor belt 11 is inclined at a 40-degree angle. A textured plate 14 is fixedly installed on the surface of the return conveyor belt 11, and the external structure of the textured plate 14 is in the shape of a "V". The upper end of the return conveyor belt 11 is connected to the starting end of the conveyor belt 10 through the chute 13. The medicinal herbs are fed into the right end of the conveyor belt 10, which rotates from right to left, transporting the herbs from the right side to the left side. The herbs then fall from the left side of the conveyor belt 10 into the parallel return conveyor belt 11 below. The return conveyor belt 11 is longer than the conveyor belt 10, and its left side is parallel to the conveyor belt 10. However, the left end of the return conveyor belt 11 extends outwards and is angled upwards to wrap around and block the herbs on the left side of the conveyor belt 10, preventing them from falling and ensuring accurate placement. On the return conveyor belt 11, the medicinal materials are transported back to the right side of the oven 1. The textured plate 14 on the surface of the return conveyor belt 11 increases the anti-slip properties of the medicinal materials, allowing them to move smoothly along the 40-degree inclined return conveyor belt 11. After the medicinal materials are transported to the upper end of the return conveyor belt 11, they fall into the inclined chute 13. The chute 13 is inclined downwards, allowing the medicinal materials to fall smoothly back to the right side of the conveyor belt 10. This process is repeated continuously to transport the medicinal materials and improve drying efficiency.

[0028] The working principle of this utility model is as follows:

[0029] When using this invention, the medicinal materials are first placed into the conveyor belt 10 from the right end. At this time, the heating fan 7 is started, drawing in external air and heating it. The heated air is then pressurized by the vortex fan 8, causing it to form a directional airflow that enters the oven 1 through the air inlet pipe 6, thus raising the internal temperature of the oven 1. As the internal temperature of the oven 1 rises, the medicinal materials inside begin to receive heat and gradually dry. Simultaneously, the high-temperature steam generated inside the oven 1 rises. At this time, the vortex fan 4 is started, drawing out the high-temperature steam through the connecting pipe 2 and the return air pipe 3. After being oriented by the vortex rotation of the vortex fan 4, the steam is transported to the steam filter box 5. The moisture-absorbing perforated plate 15 inside the steam filter box 5 absorbs the steam, while the porosity of the moisture-absorbing perforated plate 15 allows air to pass through. After the steam is absorbed, the warm air... The heat energy is recycled back into the oven 1 via the air inlet pipe 9. The oven 1 has an inner chamber 101, and an insulation layer 102 is installed between the inner chamber 101 and the oven 1. The heat energy of the recovered high-temperature water vapor returns to the insulation layer 102 to keep the oven 1 warm, thus maintaining a stable temperature inside the oven 1 and allowing it to rise steadily at a faster rate with less heat loss. Meanwhile, the medicinal materials are rotated and conveyed from right to left on the conveyor belt 10. When the medicinal materials fall from the left side of the conveyor belt 10 into the parallel return conveyor belt 11 below, they move along the return conveyor belt 11, which is inclined at a 40-degree angle, until they reach the upper end of the return conveyor belt 11 and fall into the inclined chute 13. The chute 13 is inclined downwards, allowing the medicinal materials to fall smoothly back to the right side of the conveyor belt 10, thus continuously conveying and cycling the medicinal materials to achieve continuous drying.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat recovery type continuous drying device for traditional Chinese medicine, characterized in that, include: The oven (1) is connected to a connecting pipe (2) at the top, and a return air pipe (3) is integrally connected to the end of the connecting pipe (2) away from the oven (1). A vortex fan (4) is installed at the end of the return air pipe (3) away from the connecting pipe (2). A water vapor filter box (5) is installed on one side of the vortex fan, and a filter bucket (16) is installed at the lower end of the water vapor filter box (5). An air inlet pipe (9) is connected to the lower part of the filter bucket (16). An inner box (101) is installed inside the oven (1), and a conveyor belt (10) is installed inside the inner box (101). A return conveyor belt (11) is installed below the conveyor belt (10). A roller line (12) for driving the return conveyor belt (11) is installed inside the return conveyor belt (11). A chute (13) is installed on the outer side of the upper end of the return conveyor belt (11).

2. The heat recovery type continuous drying device for traditional Chinese medicine according to claim 1, characterized in that, An air inlet pipe (6) is connected to the back right side of the oven (1). A vortex fan (8) is installed at the end of the air inlet pipe (6) away from the oven, and a heating fan (7) is installed on one side of the vortex fan (8).

3. The heat recovery type continuous drying device for traditional Chinese medicine according to claim 1, characterized in that, An insulation layer (102) is provided between the inner box (101) and the oven (1), and the insulation layer (102) is connected to the air inlet pipe (9).

4. The heat recovery type continuous drying device for traditional Chinese medicine according to claim 3, characterized in that, The inner box (101) is connected to the connecting pipe (2), and the inner box (101) is connected to the air inlet pipe (6).

5. The heat recovery type continuous drying device for traditional Chinese medicine according to claim 1, characterized in that, The left side of the conveyor belt (10) is parallel to the left side of the return conveyor belt (11), and the right side of the return conveyor belt (11) is tilted at an angle of forty degrees.

6. The heat recovery type continuous drying device for traditional Chinese medicine according to claim 1, characterized in that, The surface of the return conveyor belt (11) is fixedly provided with a textured plate (14), and the external structure of the textured plate (14) is in the shape of a "V" shape. The upper end of the return conveyor belt (11) is connected to the starting end of the conveyor belt (10) through a chute (13).

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