Medicine calcining device

By introducing a turning mechanism and a driver into the calcination device, the drug is kept in motion during the calcination process, which solves the problem of uneven heating of the drug and achieves a highly efficient drug calcination effect.

CN223654183UActive Publication Date: 2025-12-12NINGXIA BENCAO SHENMAI PHARMACEUTICAL CO LTD
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Patent Information

Application Number
CN202422609872.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-28
Publication Date
2025-12-12
Estimated Expiration
2034-10-28

AI Technical Summary

Technical Problem

When existing calcining pots are used to calcine drugs in a closed environment, the drugs are piled up together and remain stationary, resulting in low calcination efficiency and uneven heating of the drugs.

Method used

A calcining device was designed, including an insulated shell, a heating mechanism, a turning mechanism, and a driver. The heating mechanism provides heat, and the driver drives the calcining frame to rotate, which in turn turns the medicine to keep it in motion and ensures that the medicine is heated evenly.

Benefits of technology

It improves calcination efficiency, makes the drug heat more evenly, saves energy, and reduces calcination costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a medicine calcining device, which relates to the technical field of medicinal material processing and comprises a heat preservation shell, a heating mechanism, a turning mechanism, a driver and a medicine calcining frame. The heating mechanism, the turning mechanism and the driver are all installed in the heat preservation shell, and the medicine calcining frame is located in the heat preservation shell and rotationally matched with the heat preservation shell. The driver is connected with the medicine calcining frame and used for driving the medicine calcining frame to rotate relative to the heat preservation shell. The turning mechanism extends into the medicine calcining frame and is used for turning the medicine located in the medicine calcining frame when the medicine calcining frame rotates relative to the heat preservation shell. The medicine calcining device can turn over medicine in the medicine calcining process, the medicine is heated evenly, and the medicine calcining efficiency is high.
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Description

Technical Field

[0001] This utility model relates to the field of medicinal material processing technology, and more specifically, to a calcination device. Background Technology

[0002] Calcination pots are commonly used tools in the processing of traditional Chinese medicine (TCM), primarily for calcining medicinal materials. Calcination is a TCM processing method that uses high-temperature heating to cause physical or chemical changes in medicinal materials, thereby altering their properties to reduce toxicity, enhance efficacy, facilitate storage, or change the meridian tropism of the drugs. Currently, calcination pots are suitable for open calcination, dark calcination, and quenching of animal and plant-based TCM materials. Calcination is also a common method for mineral-based medicinal materials such as gypsum, hematite, and shells, allowing the drugs to exert their desired medicinal effects. In existing technologies, calcination pots are generally used in a closed environment, where the drugs are stacked together and in a static state, resulting in numerous obstructions and low calcination efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a calcination apparatus that can improve calcination efficiency.

[0004] The embodiments of this utility model can be implemented as follows:

[0005] In a first aspect, this utility model provides a calcining apparatus, comprising:

[0006] The device comprises an insulated outer shell, a heating mechanism, a turning mechanism, a driver, and a calcining frame; the heating mechanism, the turning mechanism, and the driver are all installed inside the insulated outer shell, and the calcining frame is located inside the insulated outer shell and the two are rotatably coupled; the driver is connected to the calcining frame and is used to drive the calcining frame to rotate relative to the insulated outer shell; the turning mechanism extends into the calcining frame and is used to turn the medicine located in the calcining frame when the calcining frame rotates relative to the insulated outer shell.

[0007] In an optional embodiment, the heating mechanism includes a plurality of heating tubes, all of which are suspended on the inner wall of the heat-insulating shell, and at least one of the plurality of heating tubes is configured as a bent tube.

[0008] Based on the above scheme, multiple heating tubes work together to cover a wide area, enabling the drug to be heated from multiple directions, resulting in more uniform heating and high calcination efficiency.

[0009] In an optional embodiment, the heat-insulating outer shell includes a bottom shell and a top cover. The bottom shell is provided with an open chamber, and the top cover is movably connected to the bottom shell for opening or closing the open chamber. The heating tubes are evenly distributed on the bottom and around the perimeter of the bottom shell, and the heating tubes are distributed on the bottom of the top cover.

[0010] Based on the above design, when taking out or placing medicine, the top cover is opened, and the corresponding operations are performed from the open end, making the operation convenient and flexible. During calcination, the top cover is closed, and the top cover and bottom shell cooperate to form a relatively sealed chamber, which prevents heat loss and ensures high energy utilization efficiency and calcination efficiency. Furthermore, a heating tube is also installed at the bottom of the top cover, resulting in high heating efficiency.

[0011] In an optional embodiment, the flipping mechanism includes a limiting rod, a toggle rod, a stirring rod, and a resetting member; the limiting rod is connected to the heat-insulating shell, the toggle rod is connected to the stirring rod, the stirring rod is rotatably engaged with the calcining frame and extends into the calcining frame, and the stirring rod and the calcining frame are relatively fixed relative to each other in the circumferential direction of the calcining frame; the resetting member is connected to both the stirring rod and the calcining frame, and has a tendency to rotate the stirring rod along a first direction; when the driver drives the calcining frame to rotate in the direction opposite to the first direction, the toggle rod contacts the limiting rod and can rotate in a second direction opposite to the first direction under the obstruction of the limiting rod, and the toggle rod can pass over the limiting rod during the rotation in the second direction, and under the action of the resetting member, the stirring rod rotates and resets in the first direction.

[0012] Based on the above scheme, during the calcination process, the driver drives the calcination frame to rotate along the first direction. The actuating rod and the stirring rod rotate together with the calcination frame, with a gap between them and the axis of the calcination frame. They revolve around the axis of the calcination frame. When the actuating rod and the stirring rod revolve synchronously, the actuating rod rotates to the position of the limiting rod, and the end of the actuating rod contacts the limiting rod. Since the limiting rod is fixed, as the calcination frame continues to rotate along the first direction, the actuating rod, under obstruction, rotates in the second direction opposite to the first direction. As the calcination frame continues to rotate along the first direction, the actuating rod can pass over the limiting rod and separate from it. After the actuating rod passes over the limiting rod, it loses the external force that blocked it. Under the action of the reset component, the actuating rod and the stirring rod rotate back to their original position along the first direction. This cyclical motion allows the stirring rod to swing back and forth in the first and second directions, using the stirring rod to agitate the drug.

[0013] In an optional implementation, the reset element is configured as a torsion spring.

[0014] Based on the above solution, the reset component has a simple structure, is easy to process and manufacture, and is easy to assemble and disassemble.

[0015] In an optional embodiment, the flipping mechanism further includes a positioning rod, a first protrusion, and a second protrusion. The positioning rod is fixed inside the calcination frame and has a positioning hole. The stirring rod is rotatably inserted into the positioning hole. The first protrusion is installed on the stirring rod, and the second protrusion is installed on the positioning rod. The torsion spring is sleeved on the outside of the stirring rod, with the first lever arm of the torsion spring abutting against the first protrusion and the second lever arm of the torsion spring abutting against the second protrusion.

[0016] Based on the above scheme, the torsion spring is sleeved on the outside of the stirring rod. The first force arm and the second force arm at both ends of the torsion spring are limited by the first protrusion and the second protrusion, respectively. When the actuating rod rotates in the second direction under the obstruction of the limiting rod, the torsion spring stores elastic potential energy. When the actuating rod passes the limiting rod, the elastic potential energy is released, causing the stirring rod and the actuating rod to rotate and reset in the first direction.

[0017] In an optional embodiment, a bearing is provided in the positioning hole, and the stirring rod passes through the inner ring of the bearing.

[0018] Based on the above scheme, the assembly of the stirring rod and the positioning rod is stable and reliable, and the stirring rod can rotate flexibly relative to the positioning rod.

[0019] In an optional embodiment, the bottom end of the stirring rod is provided with stirring claws.

[0020] Based on the above scheme, the coverage area of ​​the stirring claw can be designed to be larger than that of the stirring rod, resulting in a better stirring effect.

[0021] In an optional embodiment, the limiting rod and the heat-insulating shell are slidably engaged in the direction of extension of the rotation axis of the calcining frame; or, the actuating rod and the stirring rod are slidably engaged in the direction of extension of the rotation axis of the calcining frame.

[0022] Based on the above solution, by adjusting the position of the limiting rod or the actuating rod in the axial extension direction of the calcining frame, it can be ensured that the limiting rod and the actuating rod are at the same height. This allows the actuating rod to better contact the limiting rod when it rotates along the first direction with the calcining frame, avoiding slippage or misalignment and thus improving operational reliability.

[0023] In an optional embodiment, the driver is fixedly connected to the bottom of the calcination frame via a coupling.

[0024] Based on the above scheme, the connection between the driver and the calcination frame is simple and reliable.

[0025] The beneficial effects of the calcining apparatus provided in this embodiment of the invention include:

[0026] In summary, the calcination apparatus provided in this embodiment allows for the following process: during calcination, the drug is placed in a calcination frame, and heat is provided by a heating mechanism to heat the drug. Simultaneously, a driver is activated to rotate the calcination frame, causing the drug to rotate as well. Furthermore, the calcination frame cooperates with a turning mechanism, which moves relative to the calcination frame to turn the drug within it. Since the drug is in motion during heating, the stacked areas are continuously turned and exposed, resulting in more uniform heating, high calcination efficiency, energy savings, and reduced calcination costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the calcination apparatus provided in this embodiment;

[0029] Figure 2 for Figure 1 A partially enlarged structural diagram;

[0030] Figure 3 This is a top view of the calcining apparatus provided in this embodiment;

[0031] Figure 4 This is a schematic diagram of the structure of the fixed rod and the limiting rod provided in this embodiment.

[0032] icon:

[0033] 001 - First direction; 002 - Second direction; 100 - Insulation shell; 200 - Heating mechanism; 300 - Flipping mechanism; 310 - Limiting rod; 320 - Actuating rod; 330 - Stirring rod; 340 - Reset piece; 350 - Positioning rod; 360 - First protrusion; 370 - Second protrusion; 380 - Stirring claw; 390 - Fixing rod; 400 - Driver; 500 - Calcining frame; 600 - Screw. Detailed Implementation

[0034] In the existing technology, during calcination, the drugs are stacked in the heating chamber and remain stationary. The parts of the drugs that are stacked together and blocked cannot be directly exposed, resulting in poor uniformity of heating and poor calcination effect.

[0035] To improve this situation, the designers have provided a calcination device in which the drug can be turned over during the calcination process, exposing the stacked parts, so that the drug is heated evenly and the calcination efficiency is high.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0041] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0042] Please combine Figures 1-4 In this embodiment, the calcining apparatus includes a heat-insulating shell 100, a heating mechanism 200, a turning mechanism 300, a driver 400, and a calcining frame 500. The heating mechanism 200, the turning mechanism 300, and the driver 400 are all installed inside the heat-insulating shell 100, and the calcining frame 500 is located inside the heat-insulating shell 100, with the two rotatably coupled. The driver 400 is connected to the calcining frame 500 and is used to drive the calcining frame 500 to rotate relative to the heat-insulating shell 100; the turning mechanism 300 extends into the calcining frame 500 and is used to turn the medicine located inside the calcining frame 500 when the calcining frame 500 rotates relative to the heat-insulating shell 100.

[0043] As described above, the working process of the calcination apparatus provided in this embodiment is as follows:

[0044] The drug is placed in the calcination frame 500, and the heating mechanism 200 is activated to provide the heat required for calcination. Simultaneously, the driver 400 is activated, causing the calcination frame 500 to rotate. As the frame rotates, the drug also rotates. Furthermore, the calcination frame 500 cooperates with the turning mechanism 300, which moves relative to the frame, thereby turning the drug within the frame. Because the drug is in motion during heating, the stacked areas are continuously turned and exposed, resulting in more uniform heating, higher calcination efficiency, energy savings, and reduced calcination costs.

[0045] The following embodiments illustrate the details of the calcination apparatus provided in this application by way of example.

[0046] Please combine Figure 1 In this embodiment, optionally, the heating mechanism 200 includes multiple heating tubes, all suspended on the inner wall of the insulation shell 100, and at least one of the heating tubes is configured as a bent tube. The combination of multiple heating tubes provides a wide coverage area, enabling heating of the drug from multiple directions, resulting in more uniform heating and higher calcination efficiency. Furthermore, the bent design increases the length of the heating tubes within a limited space, increasing the heat output and covering a wider area, thus further enhancing calcination efficiency. It should be understood that all heating tubes can be configured as bent tubes, and the bent tubes can be spiral or meandering, etc.

[0047] In this embodiment, optionally, the heat-insulating outer shell 100 includes a bottom shell and a top cover. The bottom shell has an open chamber, and the top cover is movably connected to the bottom shell for opening or closing the open chamber. Heating tubes are evenly distributed on the bottom and sides of the bottom shell, and heating tubes are also distributed on the bottom of the top cover. When taking out or placing medicine, the top cover is opened, and the corresponding operation is performed from the open chamber, making the operation convenient and flexible. During calcination, the top cover is closed, and the top cover and bottom shell cooperate to form a relatively sealed chamber, which prevents heat loss and has high energy utilization efficiency and calcination efficiency. Furthermore, a heating tube is also installed at the bottom of the top cover, resulting in high heating efficiency.

[0048] Please combine Figures 1-3In this embodiment, optionally, the flipping mechanism 300 includes a limiting rod 310, a toggle rod 320, a stirring rod 330, and a reset member 340. The limiting rod 310 is connected to the heat insulation shell 100, and the actuating rod 320 is connected to the stirring rod 330. The stirring rod 330 is rotatably engaged with the calcining frame 500 and extends into the calcining frame 500. The stirring rod 330 and the calcining frame 500 are relatively fixed in the circumferential direction of the calcining frame 500. The reset member 340 is connected to both the stirring rod 330 and the calcining frame 500 and has a tendency to rotate the stirring rod 330 along the first direction 001. When the driver 400 drives the calcining frame 500 to rotate along the first direction 001, the actuating rod 320 contacts the limiting rod 310 and can rotate along the second direction 002 opposite to the first direction 001 under the obstruction of the limiting rod 310. The actuating rod 320 can pass over the limiting rod 310 during the rotation along the second direction 002 and, driven by the reset member 340, causes the stirring rod 330 to rotate and reset along the first direction 001.

[0049] It should be noted that during the calcination process, the driver 400 drives the calcination frame 500 to rotate along the first direction 001. The actuating rod 320 and the stirring rod 330 rotate together with the calcination frame 500. The actuating rod 320 and the stirring rod 330 have a distance from the axis of the calcination frame 500, and the two revolve around the axis of the calcination frame 500. When the actuating rod 320 and the stirring rod 330 revolve synchronously, the actuating rod 320 rotates to the position of the limiting rod 310, and the end of the actuating rod 320 contacts the limiting rod 310. Since the limiting rod 310 is fixed, as the calcining frame 500 continues to rotate along the first direction 001, the actuating rod 320 rotates along the second direction 002 opposite to the first direction 001 when it is obstructed. As the calcining frame 500 continues to rotate along the first direction 001, the actuating rod 320 can pass over the limiting rod 310 and thus separate from the limiting rod 310. After the actuating rod 320 passes over the limiting rod 310, the actuating rod 320 loses the external force that blocked it by the limiting rod 310. Under the action of the resetting member 340, the actuating rod 320 and the stirring rod 330 rotate together along the first direction 001 to reset. This cyclical motion allows the stirring rod 330 to swing back and forth in the first direction 001 and the second direction 002, thereby agitating the drug.

[0050] Please combine Figure 3 For example, the first direction 001 can be counterclockwise, and the second direction 002 can be clockwise. It should be understood that the calcining frame 500 rotates along the first direction 001, with the axis of rotation being the axis of the calcining frame 500. The stirring rod 330 can revolve and rotate. When revolving, the stirring rod 330 rotates around the axis of the calcining frame 500, and when rotating, the stirring rod 330 rotates along its own axis.

[0051] Furthermore, the reset element 340 can be configured as a torsion spring. The reset element 340 has a simple structure, is easy to manufacture, and is easy to assemble and disassemble.

[0052] Specifically, the flipping mechanism 300 also includes a positioning rod 350, a first protrusion 360, and a second protrusion 370. The positioning rod 350 is fixed inside the calcination frame 500, and a positioning hole is provided on the positioning rod 350, through which the stirring rod 330 is rotatably inserted; the first protrusion 360 is installed on the stirring rod 330, and the second protrusion 370 is installed on the positioning rod 350; a torsion spring is sleeved on the outside of the stirring rod 330, with the first lever arm of the torsion spring abutting against the first protrusion 360 and the second lever arm of the torsion spring abutting against the second protrusion 370. A torsion spring is sleeved on the outside of the stirring rod 330. The first lever arm and the second lever arm at both ends of the torsion spring are limited by the first protrusion 360 and the second protrusion 370, respectively. When the actuating rod 320 rotates along the second direction 002 under the obstruction of the limiting rod 310, the torsion spring stores elastic potential energy. When the actuating rod 320 passes the limiting rod 310, the elastic potential energy is released, causing the stirring rod 330 and the actuating rod 320 to rotate and reset along the first direction 001.

[0053] In addition, a bearing is installed in the positioning hole, and the stirring rod 330 passes through the inner ring of the bearing. The assembly of the stirring rod 330 and the positioning rod 350 is stable and reliable, and the stirring rod 330 rotates flexibly relative to the positioning rod 350.

[0054] In other embodiments, optionally, a stirring claw 380 is provided at the bottom end of the stirring rod 330. The coverage area of ​​the stirring claw 380 can be designed to be larger than the coverage area of ​​the stirring rod 330, and the stirring claw 380 has a good stirring effect.

[0055] It should be understood that there can be multiple turning mechanisms 300, and multiple turning mechanisms 300 are distributed around the calcining frame 500, which can increase the turning effect.

[0056] In this embodiment, optionally, the limiting rod 310 and the heat-insulating shell 100 are slidably engaged in the direction of extension of the rotation axis of the calcining frame 500; or, the actuating rod 320 and the stirring rod 330 are slidably engaged in the direction of extension of the rotation axis of the calcining frame 500. By adjusting the position of the limiting rod 310 or the actuating rod 320 in the direction of extension of the axis of the calcining frame 500, it can be ensured that the limiting rod 310 and the actuating rod 320 are at the same height, so that when the actuating rod 320 rotates together with the calcining frame 500 along the first direction 001, the actuating rod 320 can better contact the limiting rod 310, avoiding slippage or misalignment and failure to contact, thus improving operational reliability.

[0057] Please combine Figure 4It should be understood that both the limiting rod 310 and the actuating rod 320 can be configured as sliding structures, and after sliding, the limiting rod 310 and the actuating rod 320 can be relatively fixed to ensure positional stability and reliability. For example, a fixing rod 390 can be installed in the insulation shell 100. A sliding groove can be provided on one side of the fixing rod 390. The sliding groove can be a dovetail groove or a T-shaped groove. One end of the limiting rod 310 can be slidably disposed in the sliding groove in the extension direction of the rotation axis of the calcining frame 500. Furthermore, a screw 600 is provided on the limiting rod 310. The end of the screw 600 can abut against the bottom wall of the sliding groove, which can be fastened to it with bolts, thereby fixing the limiting rod 310 to the fixing rod 390. When it is necessary to adjust the position of the limiting rod 310, simply loosen the screw 600 until the end of the screw 600 leaves the bottom wall of the sliding groove. The operation is convenient.

[0058] In this embodiment, optionally, the driver 400 is fixedly connected to the bottom of the calcining frame 500 via a coupling. The connection between the driver 400 and the calcining frame 500 is simple and reliable.

[0059] The calcining apparatus provided in this embodiment has a calcining frame 500 that works in conjunction with a turning mechanism 300. The turning mechanism 300 can move relative to the calcining frame 500, thereby turning the medicine in the calcining frame 500. When the medicine is heated, it is in motion, and the stacked area of ​​the medicine is continuously turned over and exposed, so that the medicine is heated more evenly, the calcination efficiency is high, the calcination energy is saved, and the calcination cost is reduced.

[0060] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A medicine grinding device, characterized by, It comprises a heat preservation shell (100), a heating mechanism (200), a turning mechanism (300), a driver (400) and a medicine frame (500); the heating mechanism (200), the turning mechanism (300) and the driver (400) are all installed in the heat preservation shell (100), the medicine frame (500) is located in the heat preservation shell (100) and the two are rotatably matched; the driver (400) is connected with the medicine frame (500) and is used for driving the medicine frame (500) to rotate relative to the heat preservation shell (100); the turning mechanism (300) extends into the medicine frame (500) and is used for turning medicine located in the medicine frame (500) when the medicine frame (500) rotates relative to the heat preservation shell (100).

2. The medicine calcining device according to claim 1, wherein the heating mechanism (200) comprises a plurality of heating pipes, and the plurality of heating pipes are all hung on the inner wall surface of the heat preservation shell (100), and at least one of the plurality of heating pipes is arranged as a bent pipe.

3. The medicine calcining device according to claim 2, wherein the heat preservation shell (100) comprises a bottom shell and a top cover, the bottom shell is provided with a chamber with an opening, and the top cover is movably connected with the bottom shell and is used for opening or closing the opening; the bottom of the bottom shell and the periphery thereof are all provided with the heating pipes, and the bottom of the top cover is provided with the heating pipes.

4. The medicine calcining device according to claim 1, wherein the turning mechanism (300) comprises a limiting rod (310), a pushing rod (320), a stirring rod (330) and a reset member (340); the limiting rod (310) is connected with the heat preservation shell (100), the pushing rod (320) is connected with the stirring rod (330), the stirring rod (330) is rotatably matched with the medicine frame (500) and extends into the medicine frame (500), and the stirring rod (330) is relatively fixed with the medicine frame (500) in the circumferential direction of the medicine frame (500); the reset member (340) is connected with the stirring rod (330) and the medicine frame (500) at the same time and has a tendency of rotating the stirring rod (330) in a first direction (001); when the driver (400) drives the medicine frame (500) to rotate in a direction opposite to the first direction (001), the pushing rod (320) is in contact with the limiting rod (310) and can rotate in a second direction (002) opposite to the first direction (001) under the block of the limiting rod (310), and the pushing rod (320) can pass the limiting rod (310) in the process of rotating in the second direction (002) and drive the stirring rod (330) to rotate in the first direction (001) under the driving of the reset member (340).

5. The medicine calcining device according to claim 4, wherein the reset member (340) is arranged as a torsional spring.

6. The medicine calcining device according to claim 5, wherein ​ ​ ​ ​ ​ The turning mechanism (300) further comprises a positioning rod (350), a first protrusion (360) and a second protrusion (370), the positioning rod (350) is fixed in the medicine calcining frame (500), the positioning rod (350) is provided with a positioning hole, and the stirring rod (330) is rotatably arranged in the positioning hole; the first protrusion (360) is installed on the stirring rod (330), and the second protrusion (370) is installed on the positioning rod (350); the torsional spring is sleeved outside the stirring rod (330), the first force arm of the torsional spring abuts against the first protrusion (360), and the second force arm of the torsional spring abuts against the second protrusion (370).

7. The medicine calcining device according to claim 6, characterized in that: The positioning hole is provided with a bearing, and the stirring rod (330) is arranged in the inner ring of the bearing.

8. The medicine calcining device according to claim 4, characterized in that: The bottom end of the stirring rod (330) is provided with a stirring claw (380).

9. The medicine calcining device according to any one of claims 4-8, characterized in that: The limiting rod (310) and the heat preservation shell (100) are slidably matched in the extension direction of the rotation axis of the medicine calcining frame (500), or the stirring rod (330) and the stirring rod (330) are slidably matched in the extension direction of the rotation axis of the medicine calcining frame (500).

10. The medicine calcining device according to claim 1, characterized in that: The driver (400) and the bottom of the medicine calcining frame (500) are fixedly connected through a shaft coupling.