Multi-section hot air circulating oven for processing traditional Chinese medicine decoction pieces

Abstract

The multi-section type hot air circulating oven for processing the traditional Chinese medicine decoction pieces comprises a supporting seat, a hot air input cover is fixedly installed on the upper end face of the supporting seat, a hot air input pipe is installed in the middle of the hot air input cover, and a heat storage plate is fixedly installed on the inner side of the upper end of the hot air input cover. A drying shell is fixedly installed on the upper end face of the hot air input cover, a plurality of positioning angle plates are installed on the inner side of the drying shell, a material containing barrel is installed among the multiple positioning angle plates, a conical shaping base is installed on the inner side of the bottom end of the material containing barrel, and a plurality of stirring strips are installed between the material containing barrel and the conical shaping base. A transmission rod is mounted at the upper ends of the multiple stirring strips, and a sealing cover is rotationally connected to the outer side of the upper end of the transmission rod. According to the traditional Chinese medicine decoction piece drying device, raw materials of traditional Chinese medicine decoction pieces are subjected to temperature control and stirring, full drying operation can be achieved, hot air obtained after drying can be recycled conveniently, and heat loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of drying technology, specifically a multi-stage hot air circulating drying oven for processing Chinese herbal medicine slices. Background Technology

[0002] Prepared medicinal slices refer to Chinese medicinal herbs that have undergone processing according to requirements, either for prescription use or for direct clinical application in traditional Chinese medicine. Prepared medicinal slices represent the essence of traditional Chinese medicine. Different processing methods alter the medicinal properties and efficacy of the raw materials, which is a characteristic and advantage of traditional Chinese medicine. Before processing, high-quality raw materials must be selected to ensure the quality of the final product. The purchased raw materials need to be cleaned using cleaning equipment and then dried in an oven.

[0003] Existing drying ovens for drying raw materials of Chinese herbal medicines do not facilitate the recycling of the dried hot air, resulting in heat loss and the accumulation of raw materials, leading to incomplete drying. Therefore, they do not meet the current needs. To address this, we propose a multi-stage hot air circulating drying oven for processing raw materials of Chinese herbal medicines. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-stage hot air circulating oven for processing Chinese herbal medicine slices, so as to solve the problems mentioned in the background art, that existing drying ovens are not convenient for recycling the dried hot air, resulting in heat loss, and that the raw materials are prone to accumulation, causing incomplete drying.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-segment hot air circulating oven for processing Chinese herbal medicine slices, comprising a support base, a hot air input hood fixedly installed on the upper end face of the support base, a hot air input pipe installed in the middle of the hot air input hood, a heat storage plate fixedly installed on the inner side of the upper end of the hot air input hood, a drying shell fixedly installed on the upper end face of the hot air input hood, multiple positioning angle plates installed on the inner side of the drying shell, a material feeding cylinder installed between the multiple positioning angle plates, a conical shaping seat installed on the inner side of the bottom end of the material feeding cylinder, multiple stirring strips installed between the material feeding cylinder and the conical shaping seat, a transmission rod installed on the upper end of the multiple stirring strips, a sealing cover rotatably connected to the outer side of the upper end of the transmission rod, a heat insulation cover installed on the outer side of the drying shell, multiple first connecting pipes provided on the upper end of the heat insulation cover, second connecting pipes installed on both sides of the heat insulation cover, and a condensation reflux mechanism installed at one end of the second connecting pipe.

[0006] Preferably, the condensation reflux mechanism includes a hot water exchange tank, a water supply pipe is provided on the upper end of the hot water exchange tank, a radiator is fixedly installed on one side of the hot water exchange tank, a reflux pipe is fixedly installed at the bottom of the hot water exchange tank, and a drain pipe is fixedly installed at the bottom of the reflux pipe.

[0007] Preferably, the hot air input pipe is connected to the drying shell through a hot air input cover, the upper end face of the heat storage plate is provided with a plurality of parallel air guide holes, the interior of the heat storage plate is provided with an electric heating resistance wire, and the inner wall of the bottom end of the drying shell is provided with a temperature sensor.

[0008] Preferably, the drying shell and the material feeding cylinder are fixedly connected by multiple positioning angle plates, the bottom end of the transmission rod passes through the sealing cover and is fixedly connected to multiple conical shaping seats, and the surface of the material feeding cylinder is provided with multiple air vents.

[0009] Preferably, the heat insulation cover is fixedly connected to the drying shell, and the two second connecting pipes and the plurality of first connecting pipes are connected through the heat insulation cover. The plurality of first connecting pipes are arranged in a circle relative to the drying shell, and the heat insulation cover and the drying shell are connected through the plurality of first connecting pipes.

[0010] Preferably, the upper end of the return pipe passes through the hot water exchange tank and is connected to the second connecting pipe. The return pipe located inside the hot water exchange tank is arranged in a curved shape. The hot water exchange tank is filled with cold water. The drain pipe is connected to the return pipe. The bottom end of the return pipe passes through the support base and is inserted into the inside of the hot air input cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model injects hot air into the inner side of the hot air inlet hood through a hot air inlet pipe. The temperature of the hot air for drying is monitored by a temperature sensor, and the temperature of the hot air is regulated by a heat storage plate to maintain the stability of the hot air temperature and improve the drying effect on the raw materials. The hot air can evenly heat the raw materials through the vent holes and flow inside the material cylinder and the conical shaping seat. By rotating the transmission rod, the transmission rod stirs the raw materials through multiple stirring strips, which effectively improves the full drying of the raw materials and avoids the accumulation of raw materials that causes insufficient local moisture dissipation.

[0013] 2. This utility model uses an insulation cover to keep the drying shell warm by allowing hot and humid air to pass through, thereby improving drying efficiency and reducing the temperature difference between the inside and outside of the drying shell. The interior of the hot water exchange tank is filled with cold water, which allows the hot and humid air to exchange heat with the cold water when it flows in a curved shape in the return pipe, thereby achieving the cooling and condensation of the hot and humid air. It is convenient to discharge the condensate through the drain pipe and reduce the water vapor content in the gas return. The dried gas is returned through two return pipes, realizing the circulation of the raw materials and thus reducing the heat loss during the drying process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the drying shell of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the entire utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the first connecting pipe of this utility model.

[0018] In the diagram: 1. Support base; 2. Condensation reflux mechanism; 201. Hot water tank; 202. Water supply pipe; 203. Radiator; 204. Return pipe; 205. Drain pipe; 3. Hot air input cover; 4. Insulation cover; 5. First connecting pipe; 6. Drying shell; 7. Sealing cover; 8. Transmission rod; 9. Heat storage plate; 10. Hot air input pipe; 11. Feeding cylinder; 12. Positioning angle plate; 13. Stirring bar; 14. Conical shaping seat; 15. Second connecting pipe. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 3This utility model provides an embodiment of a multi-segment hot air circulating oven for processing Chinese herbal medicine slices, including a support base 1. A hot air input hood 3 is fixedly installed on the upper end face of the support base 1. A hot air input pipe 10 is installed in the middle of the hot air input hood 3. A heat storage plate 9 is fixedly installed on the inner side of the upper end of the hot air input hood 3. The upper end face of the heat storage plate 9 is provided with a plurality of parallel air guide holes. The heat storage plate 9 is provided with an electric heating resistance wire inside. A drying shell 6 is fixedly installed on the upper end face of the hot air input hood 3. A temperature sensor is provided on the inner wall of the bottom end of the drying shell 6. The hot air input pipe 10 and the drying shell 6 are connected through the hot air input hood 3. The temperature of the hot air for drying is monitored by the temperature sensor, and the temperature of the hot air is regulated by the heat storage plate 9 to maintain the stability of the hot air temperature and improve the drying effect on the raw materials.

[0021] Please see Figure 2 and Figure 3 Multiple positioning angle plates 12 are installed on the inner side of the drying shell 6. A material feeding cylinder 11 is installed between the multiple positioning angle plates 12. The surface of the material feeding cylinder 11 is provided with multiple air vents. The drying shell 6 and the material feeding cylinder 11 are fixedly connected by the multiple positioning angle plates 12. A conical shaping seat 14 is installed on the inner side of the bottom end of the material feeding cylinder 11. Multiple stirring strips 13 are installed between the material feeding cylinder 11 and the conical shaping seat 14. A transmission rod 8 is installed on the upper end of the multiple stirring strips 13. The bottom end of the transmission rod 8 passes through the sealing cover 7 and is fixedly connected to the multiple conical shaping seats 14. The outer side of the upper end of the transmission rod 8 is rotatably connected to the sealing cover 7. By rotating the transmission rod 8, the transmission rod 8 stirs the raw material through the multiple stirring strips 13, which effectively improves the full drying of the raw material and avoids the accumulation of raw material causing insufficient local moisture dissipation.

[0022] Please see Figures 1 to 4 A heat insulation cover 4 is installed on the outside of the drying shell 6. The heat insulation cover 4 is fixedly connected to the drying shell 6. The upper end of the heat insulation cover 4 is provided with multiple first connecting pipes 5. The multiple first connecting pipes 5 are arranged in a circle relative to the drying shell 6. The heat insulation cover 4 and the drying shell 6 are connected through the multiple first connecting pipes 5. Second connecting pipes 15 are installed on both sides of the heat insulation cover 4. The two second connecting pipes 15 and the multiple first connecting pipes 5 are connected through the heat insulation cover 4. The heat insulation cover 4 can keep the drying shell 6 warm by the hot and humid air, improve the drying efficiency, and reduce the temperature difference between the inside and outside of the drying shell 6.

[0023] Please see Figure 1 and Figure 3A condensation reflux mechanism 2 is installed at one end of the second connecting pipe 15. The condensation reflux mechanism 2 includes a hot water exchange tank 201, which is filled with cold water. A water supply pipe 202 is provided on the upper surface of the hot water exchange tank 201. A radiator 203 is fixedly installed on one side of the hot water exchange tank 201. A reflux pipe 204 is fixedly installed at the bottom of the hot water exchange tank 201. The bottom end of the reflux pipe 204 passes through the support base 1 and is inserted into the inside of the hot air input cover 3. The upper end of the reflux pipe 204 passes through the hot water exchange tank 201. It is connected to the second connecting pipe 15. The return pipe 204 located inside the hot water tank 201 is arranged in a curved shape. A drain pipe 205 is fixedly installed at the bottom of the return pipe 204. The drain pipe 205 is connected to the return pipe 204. When the hot and humid gas flows in a curved shape in the return pipe 204, it exchanges heat with the cold water, thereby realizing the cooling and condensation operation of the hot and humid gas. The dried gas is returned through the two return pipes 204 to realize the circulation of the raw materials, thereby reducing the heat loss during the drying process.

[0024] In use, when drying raw materials of Chinese herbal medicine slices, the raw materials are placed between the material cylinder 11 and the conical shaping seat 14 through the sealing cover 7. The power is turned on, and hot air is injected into the inside of the hot air input cover 3 through the hot air input pipe 10. There are multiple parallel air guide holes on the upper end face of the heat storage plate 9, and the heat storage plate 9 is equipped with electric heating resistance wires. The inner wall of the bottom end of the drying shell 6 is equipped with a temperature sensor. The temperature of the hot air used for drying is monitored by the temperature sensor, and the temperature of the hot air is regulated by the heat storage plate 9 to maintain the stability of the hot air temperature and improve the drying effect of the raw materials. There are multiple air vents on the surface of the material cylinder 11, so that the hot air can be evenly heated to the raw materials through the air vents and flow inside the material cylinder 11 and the conical shaping seat 14. By rotating the transmission rod 8, the transmission rod 8 stirs the raw materials through multiple stirring strips 13, which effectively improves the full drying of the raw materials and avoids the accumulation of raw materials causing insufficient local moisture dissipation.

[0025] Then, the dried hot and humid air is introduced into the inner side of the heat insulation cover 4 through multiple first connecting pipes 5. The heat insulation cover 4 can then insulate the drying shell 6 with the hot and humid air, thereby improving the drying efficiency and reducing the temperature difference between the inside and outside of the drying shell 6. The heat insulation cover 4 introduces the hot and humid air into the curved return pipes 204 through two second connecting pipes 15. The hot water tank 201 is filled with cold water, so that the hot and humid air exchanges heat with the cold water when it flows in a curved manner in the return pipes 204, thereby achieving the cooling and condensation operation of the hot and humid air. This facilitates the discharge of condensate through the drain pipe 205 and reduces the water vapor content in the gas return. The dried gas is returned through the two return pipes 204, realizing the circulation of the raw materials and reducing the heat loss during the drying process.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-stage hot air circulating oven for processing Chinese herbal medicine slices, comprising a support base (1), characterized in that: A hot air input hood (3) is fixedly installed on the upper end face of the support base (1). A hot air input pipe (10) is installed in the middle of the hot air input hood (3). A heat storage plate (9) is fixedly installed on the inner side of the upper end of the hot air input hood (3). A drying shell (6) is fixedly installed on the upper end face of the hot air input hood (3). A plurality of positioning angle plates (12) are installed on the inner side of the drying shell (6). A material placement cylinder (11) is installed between the plurality of positioning angle plates (12). A conical shaping seat (14) is installed on the inner side of the bottom end of the material placement cylinder (11). Multiple stirring bars (13) are installed between the feeding cylinder (11) and the conical shaping seat (14). A transmission rod (8) is installed at the upper end of the multiple stirring bars (13). A sealing cover (7) is rotatably connected to the outer side of the upper end of the transmission rod (8). A heat insulation cover (4) is installed on the outer side of the drying shell (6). Multiple first connecting pipes (5) are provided at the upper end of the heat insulation cover (4). Second connecting pipes (15) are installed on both sides of the heat insulation cover (4). A condensation reflux mechanism (2) is installed at one end of the second connecting pipe (15).

2. The multi-stage hot air circulating oven for processing Chinese herbal medicine slices according to claim 1, characterized in that: The condensation reflux mechanism (2) includes a hot water tank (201), a water supply pipe (202) is provided on the upper end of the hot water tank (201), a radiator (203) is fixedly installed on one side of the hot water tank (201), a reflux pipe (204) is fixedly installed at the bottom end of the hot water tank (201), and a drain pipe (205) is fixedly installed at the bottom end of the reflux pipe (204).

3. The multi-stage hot air circulating oven for processing Chinese herbal medicine slices according to claim 2, characterized in that: The hot air input pipe (10) and the drying shell (6) are connected through the hot air input cover (3). The upper surface of the heat storage plate (9) is provided with a plurality of parallel air guide holes. The heat storage plate (9) is provided with an electric heating resistance wire inside. The inner wall of the bottom end of the drying shell (6) is provided with a temperature sensor.

4. The multi-stage hot air circulating oven for processing Chinese herbal medicine slices according to claim 3, characterized in that: The drying shell (6) and the material cylinder (11) are fixedly connected by multiple positioning angle plates (12). The bottom end of the transmission rod (8) passes through the sealing cover (7) and is fixedly connected to multiple conical shaping seats (14). The surface of the material cylinder (11) is provided with multiple air vents.

5. A multi-stage hot air circulating oven for processing Chinese herbal medicine slices according to claim 4, characterized in that: The heat insulation cover (4) is fixedly connected to the drying shell (6). The two second connecting pipes (15) and the multiple first connecting pipes (5) are connected through the heat insulation cover (4). The multiple first connecting pipes (5) are arranged in a circle relative to the drying shell (6). The heat insulation cover (4) and the drying shell (6) are connected through the multiple first connecting pipes (5).

6. A multi-stage hot air circulating oven for processing Chinese herbal medicine slices according to claim 5, characterized in that: The upper end of the return pipe (204) passes through the hot water exchange tank (201) and is connected to the second connecting pipe (15). The return pipe (204) located inside the hot water exchange tank (201) is arranged in a curved shape. The hot water exchange tank (201) is filled with cold water. The drain pipe (205) is connected to the return pipe (204). The bottom end of the return pipe (204) passes through the support base (1) and is inserted into the inside of the hot air input cover (3).

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