Traditional Chinese medicine decocting equipment and decocting method thereof

Abstract

The application belongs to traditional Chinese medicine decocting equipment, and discloses a traditional Chinese medicine decocting equipment and a decocting method thereof, which are used for an integrated equipment for decocting traditional Chinese medicine bags or decoction pieces, and the integrated equipment comprises an open tank body, a top cover is arranged at the opening of the tank body, an inlet pipe extending outward is arranged on the upper part of one side of the tank body, and an outlet pipe extending outward is arranged on the bottom of the tank body; the tank body is internally provided with a cavity for accommodating the traditional Chinese medicine bags or decoction pieces, and a heating module arranged in the tank body is used for heating the traditional Chinese medicine bags or decoction pieces containing water in the cavity; a communication pipe is further arranged on one side of the tank body, the communication pipe has at least two communication pipes communicating with the inside of the tank body, and a liquid level meter is arranged on the top of the communication pipe; the inlet pipe and the outlet pipe are both provided with electromagnetic valves, and the heating module, the electromagnetic valves and the liquid level meter are connected with a control module.

Description

Technical Field

[0001] This invention belongs to the technical field of traditional Chinese medicine decoction equipment, specifically relating to a traditional Chinese medicine decoction equipment and its decoction method. Background Technology

[0002] Chinese medicinal herbs, whether in decoction pieces or in medicine packets made from them, need to undergo multiple processing steps before they can be made into a medicine. For example, to make a decoction, the prepared Chinese medicinal herbs, whether in loose pieces or in medicine packets, need to be placed in a container and decocted according to the required temperature and time. The decocted liquid is then collected to form a decoction.

[0003] Ancient Chinese medicine decoction required numerous steps and, due to technological limitations, relied on manual, timed operations, which were time-consuming, labor-intensive, and yielded decoctions with limited effective components. Modern Chinese medicine decoction utilizes automated equipment that can prepare decoctions according to specific conditions. Pharmaceutical factories and hospitals, in particular, possess large-scale decoction equipment that can be programmed to prepare decoctions according to demand. Patients simply need to package the finished decoction and take it in the prescribed dosage. However, existing decoction equipment typically cannot actively control the final dosage. Since modern Chinese medicine prescriptions specify a fixed amount of decoction, the inability to precisely control the dosage after decoction can lead to patients not taking the prescribed amount. To address this issue, current methods involve statistically analyzing all the medicinal herbs in the prescription before decoction. The amount of decoction consumed after decoction is calculated based on its type and quantity (this consumption includes both evaporation and absorption by the herbs, calculated using experimental parameters of decoction consumption per unit weight of herb). This consumed amount of decoction is then replenished before the decoction begins. This method is quite complex to implement, and because there are many medicinal slices in each prescription, there are problems of mutual influence, which leads to a large error in the actual use. It is necessary to manually add more water based on experience before each use to ensure that the final amount of soup is not less than the required dosage, and then process it by concentration or simply discarding it. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a traditional Chinese medicine decoction device and its decoction method. By optimizing the existing electric heating container structure, the internal liquid level is obtained using the principle of communicating vessels, and the inlet and outlet pipes equipped with electromagnetic valves are used for control, thereby meeting the requirement of automatic multiple decoctions of the same batch of medicine to ensure the final output dosage.

[0005] The technical solution adopted in this invention is as follows:

[0006] In a first aspect, the present invention discloses a traditional Chinese medicine decoction device, an integrated device for decocting traditional Chinese medicine packets or decoction pieces into preparations, including an open tank body, a top cover provided at the opening of the tank body, an outwardly extending water inlet pipe on the upper part of one side of the tank body, and an outwardly extending water outlet pipe at the bottom.

[0007] The canister has a cavity for holding Chinese medicine packets or decoction pieces, and a heating module installed inside the canister heats the Chinese medicine packets or decoction pieces containing water in the cavity.

[0008] A connecting pipe is also provided on one side of the tank. The connecting pipe has at least two connecting pipes, one high and one low, that connect to the inside of the tank. A level gauge is provided at the top of the connecting pipe.

[0009] Both the inlet and outlet pipes are equipped with solenoid valves, and the heating module, solenoid valves, and level gauges are all connected to the provided control module.

[0010] It should be noted that the entire decoction equipment is equipped with an automatic level gauge to measure the internal water level. This level gauge is installed inside the connecting pipe and utilizes the connecting pipe effect to easily obtain the water level data. The entire tank has a large storage space for placing Chinese medicine packets or decoction pieces. Before decoction, an appropriate amount of clean water needs to be added to the tank, generally not exceeding half of the tank's internal volume.

[0011] The control module can be installed on or outside the tank, connected via wired or wireless means. The tank itself is primarily powered by an external power source, as its heating requires significant power, and a battery of the same volume cannot stably output the necessary current. The control module can set the heating time and the amount of water to be heated. Both the inlet and outlet pipes are connected to external structures; for example, the inlet pipe connects to a water source with inlet pressure, and the outlet pipe connects to a container with a larger volume. After the initial time is set, the control module controls the inlet pipe to fill the tank with water, using a water level gauge to obtain the real-time water level. Once the water level reaches a set threshold, the solenoid valve of the inlet pipe is closed. The heating module can be activated at any time to heat the inside of the tank. A thermometer can also be installed inside the tank to obtain the real-time internal temperature. The control module continuously heats and boils the liquid inside, allowing the medicine packet or decoction pieces to be decocted into a soup within the set time. After the first set cooking time is reached, the control module controls the water outlet pipe to release water, and stops releasing water when the liquid level drops to the set height. Then, water is introduced again through the water inlet pipe to the set height before cooking resumes.

[0012] The above description aims to illustrate the usage of the entire device. The control module is a common embedded control module found in existing electrical control equipment, and its control can be achieved using a conventional STM microcontroller. Furthermore, the control logic is simple, based on user-set time or other parameters for simmering. The entire device primarily relies on its structural characteristics to achieve its technical effects. Its control principle is relatively simple and not unique, and does not require specially configured software programs to achieve the corresponding technical effects.

[0013] In conjunction with the first aspect, the present invention provides a first embodiment of the first aspect, wherein the can body includes a can body having two ports, the top port having a removable top cover covering it, and the bottom having a bottom cover for sealing.

[0014] In conjunction with the first embodiment of the first aspect, the present invention provides a second embodiment of the first aspect, wherein a recessed inner liner structure is formed extending inward from the upper port edge inside the can body, and the inner liner has a gap with the can body.

[0015] In conjunction with the second embodiment of the first aspect, the present invention provides a third embodiment of the first aspect, wherein the inner liner has a water outlet at the center of its bottom, the water outlet is connected to a water outlet pipe, and the water outlet pipe extends out of the tank body and connects to an external structure.

[0016] In conjunction with the third embodiment of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein the inner liner has a water outlet at the center of its bottom, a water storage area is formed between the bottom of the inner liner and the bottom cover, the water outlet is connected to the lower water storage area, and the water outlet pipe is connected to the water storage area.

[0017] In conjunction with the fourth embodiment of the first aspect, the present invention provides a fifth embodiment of the first aspect, wherein the bottom cover and the tank body are connected by a flange.

[0018] In conjunction with the second embodiment of the first aspect, the present invention provides a sixth embodiment of the first aspect, wherein the connecting pipe has an opening at the top and the level gauge is disposed at the opening;

[0019] The level gauge has a floating rod inside that extends towards the bottom of the connecting pipe, and the bottom end of the floating rod is fixedly connected to the bottom end of the connecting pipe;

[0020] The floating rod is fitted with a magnetic floating part that can slide back and forth along the length of the floating rod, and the floating part moves up and down with the liquid level inside the connecting pipe.

[0021] In conjunction with the second embodiment of the first aspect, the present invention provides a seventh embodiment of the first aspect, wherein the heating module is an electric heating tube, the heating module is disposed at the bottom of the inner liner and fits against the outer surface of the bottom of the inner liner, and the heating module is covered with a heat insulation layer.

[0022] Secondly, the present invention also discloses a quantitative decoction method, using the aforementioned traditional Chinese medicine decoction equipment, as detailed below:

[0023] First, the prepared medicinal slices are loaded into the cavity. Then, the final dosage of the decoction is determined according to the prescription. The corresponding dosage of the decoction is input into the control module of the device and converted into water level data. After the decoction time is set, the control module controls the decoction. Before decoction, the control module determines the first water level threshold and the second water level threshold based on the water level data.

[0024] When decocting, the first water injection should be done at a level lower than the rated soup dosage. After the water injection is completed, the heating module should be turned on and the decoction should be brought to a boil and kept boiling.

[0025] When the water level drops to the first water level threshold, open the solenoid valve of the water inlet pipe to let water in until the water level reaches the second water level threshold, then stop letting water in. Continue simmering and keep the water level in the cavity above the first water level threshold.

[0026] When the actual decoction time exceeds 90% of the rated decoction time, the first and second water level thresholds are cancelled, and the third water level threshold is determined based on the rated soup dosage. Water is added after the water level in the cavity is lower than the third water level threshold. The decoction is stopped when the water level after adding water is 1-5% higher than the third water level threshold, until the decoction is completed.

[0027] Thirdly, the present invention also discloses a quantitative decoction method, using the aforementioned traditional Chinese medicine decoction equipment, as detailed below:

[0028] First, the prepared medicinal slices are put into the inner pot. Then, the final dosage of the decoction is determined according to the prescription. The corresponding dosage of the decoction is input into the control module of the equipment and converted into water level data. After the decoction time is set, the control module controls the decoction and sets the number of times water is added, the amount of water added at one time, and the decoction time at one time according to the water level data.

[0029] During decoction, water is added in a single batch through the inlet pipe. The water level corresponding to the single batch of water added must be at least above the highest point of the shaken medicinal slices in the inner pot. Then, decoction is started until boiling. During the single decoction time, the control module controls the continuous replenishment of water to ensure that the water level in the inner pot is maintained at the level corresponding to the single batch of water added. After the single decoction time is completed, the decoction in the inner pot is exported to the storage area. After exporting, the single batch of water is injected into the inner pot again for repeated decoction until the required number of water additions is reached.

[0030] The beneficial effects of this invention are as follows:

[0031] This invention optimizes the tank structure and, through the connection pipe structure and the liquid level gauge, forms a liquid column outside the tank with the same liquid level as inside. The separately designed structure improves detection accuracy. At the same time, with the inlet and outlet pipes equipped with solenoid valves, automatic water inlet and outlet control can be performed during the decoction process. The opening and closing status of water inlet and outlet can be controlled according to the liquid level. The device does not require a preset water amount and can ensure that the final decoction dosage reaches the required amount by replenishing water during multiple decoction processes.

[0032] At the same time, the equipment can also automatically decoct and collect the liquid from the same batch of medicinal slices multiple times. By automatically controlling the amount of water entering and leaving the pot, water is added and decocted multiple times according to the final set amount of soup, thereby improving the decoction efficiency.

[0033] Meanwhile, the replaceable bottom cover structure allows for easy adjustment of the space between the inner pot and the bottom cover, making it convenient to directly discharge the decoction or collect it in the space on the bottom cover. This also allows for multiple low-water decoctions followed by re-boiling. Attached Figure Description

[0034] Figure 1 This is a first structural front view of the entire traditional Chinese medicine decoction equipment in this embodiment of the invention;

[0035] Figure 2 This is a first structural side view of the entire traditional Chinese medicine decoction equipment in this embodiment of the invention;

[0036] Figure 3 This is the first structural isometric view of the entire traditional Chinese medicine decoction equipment in this embodiment of the invention;

[0037] Figure 4 This is a schematic diagram of the internal structure of the first structural part of the entire Chinese herbal medicine decoction equipment in this embodiment of the invention after being cut open;

[0038] Figure 5 This is a schematic diagram of the internal structure of the second structural part of the entire Chinese medicine decoction equipment in this embodiment of the invention.

[0039] In the diagram: 1-Top cover, 2-Tank body, 3-Bottom cover, 4-Inlet pipe, 5-Flow meter, 6-Outlet pipe, 7-Connecting pipe, 8-Level gauge, 9-Viewing window, 10-Upper connecting pipe, 11-Floating rod, 12-Floating part, 13-Lower connecting pipe, 14-Bottom connecting port, 15-Inner liner. Detailed Implementation

[0040] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0043] 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.

[0044] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0046] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] Example 1:

[0048] This embodiment discloses a traditional Chinese medicine decoction device, which is mainly used for individuals to automatically decoct multiple herbal pieces or medicine packets of a single prescription.

[0049] Reference Figure 1 The figure shows an integrated tank structure, including an open tank with a top cover 1 at its opening, an outward-extending water inlet pipe 4 on the upper part of one side of the tank, and an outward-extending water outlet pipe 6 at the bottom.

[0050] The tank has a cavity inside to hold Chinese medicine packets or decoction pieces, and a heating module installed inside the tank heats the Chinese medicine packets or decoction pieces containing water in the cavity. A connecting pipe 7 is also provided on one side of the tank. The connecting pipe 7 has at least two connecting pipes, one high and one low, that connect to the inside of the tank. A level gauge 8 is provided at the top of the connecting pipe 7. Both the inlet pipe 4 and the outlet pipe 6 are equipped with solenoid valves. The heating module, the solenoid valves, and the level gauge 8 are all connected to a control module.

[0051] In this embodiment, the control device is a circuit board with an STM32 microcontroller installed inside the tank, and also has a power supply module that operates by connecting to an external 220V power supply. The heating module is an electric heating wire installed inside the tank, wound around the corresponding position to form a heating section, and is powered by the control module to provide heating, with a power of 750W-1500W.

[0052] The solenoid valve is a small component and is also controlled by the control module. The inlet pipe 4 is connected to an external tap water pipe with a filter. It has a certain inlet pressure. The tap water can be filtered through the external filter to form relatively clean pure water. The solenoid valve controls the inlet flow rate and velocity of the inlet pipe 4.

[0053] Before use, a certain amount of water will be injected into the tank. At this time, the liquid level recorded by the level gauge 8 will reach the set threshold. Generally, users can set the liquid level height during decocting according to their needs. Since the liquid level will drop after the water evaporates, the set threshold can be adjusted to take into account the change in liquid level after evaporation.

[0054] Furthermore, referring to Figures 2-4 The tank body includes a tank body 2 with two ports, a top port covered by a removable top cover 1, and a bottom cover 3 for sealing.

[0055] The inner liner 15 extends inward from the upper port edge inside the tank body 2, forming a downwardly recessed structure. The inner liner 15 is spaced apart from the tank body 2. The bottom center of the inner liner 15 has a water outlet, which is connected to a water outlet pipe 6. The water outlet pipe 6 extends out of the tank body 2 and connects to the external structure.

[0056] A connecting pipe 7 located on one side of the tank body 2 connects to the inner liner 15 from both the top and bottom via an upper connecting pipe 10 and a lower connecting pipe 13. A floating rod 11 structure is located within the connecting pipe 7 to guide the floating part 12, which rises and falls with the liquid level. An opening is located at the top of the connecting pipe 7, and a level gauge 8 is installed at this opening. The level gauge 8 is a sensing device that, in conjunction with the floating rod 11 structure, determines the height of the floating part 12 within the connecting pipe 7 through mechanical feedback, magnetic feedback, and photoelectric feedback. This allows the liquid level height within the inner liner 15 to be obtained through a pre-programmed sequence.

[0057] This embodiment discloses a quantitative decoction method, using the aforementioned traditional Chinese medicine decoction equipment, as detailed below:

[0058] First, the prepared medicinal slices are loaded into the cavity. Then, the final dosage of the decoction is determined according to the prescription. The corresponding dosage of the decoction is input into the control module of the device and converted into water level data. After the decoction time is set, the control module controls the decoction. Before decoction, the control module determines the first water level threshold and the second water level threshold based on the water level data.

[0059] When decocting, the first water injection should be done at a level lower than the rated soup dosage. After the water injection is completed, the heating module should be turned on and the decoction should be brought to a boil and kept boiling.

[0060] When the water level drops to the first water level threshold, open the solenoid valve of the water inlet pipe 4 to let water in until the water level reaches the second water level threshold, then stop letting water in. Continue simmering and ensure that the water level in the cavity is not lower than the first water level threshold.

[0061] When the actual decoction time exceeds 90% of the rated decoction time, the first and second water level thresholds are cancelled, and the third water level threshold is determined based on the rated soup dosage. Water is added after the water level in the cavity is lower than the third water level threshold. The decoction is stopped when the water level after adding water is 1-5% higher than the third water level threshold, until the decoction is completed.

[0062] In another implementation, refer to Figure 5 The inner liner 15 has a water outlet at the center of its bottom. A water storage area is formed between the bottom of the inner liner 15 and the bottom cover 3. The water outlet connects to the lower water storage area, and the water outlet pipe 6 connects to the water storage area. The figure shows a replacement bottom cover 3 structure with a larger depth and volume, which can form a larger cavity inside to accommodate the soup flowing out of the inner liner 15. An insulation layer is provided on its exterior or interior to provide a certain heat preservation effect.

[0063] It should be noted that in this embodiment, the bottom cover 3 is connected to the tank body 2 by a flange and can be replaced by disassembly. Alternatively, a threaded connection can also be used to achieve replacement and sealing.

[0064] The connecting pipe 7 has an opening at the top, and the level gauge 8 is installed at the opening; the level gauge 8 has a floating rod 11 extending to the bottom of the connecting pipe 7 inside, and the bottom end of the floating rod 11 is fixedly connected to the bottom end of the connecting pipe 7; a magnetic floating part 12 is sleeved on the floating rod 11, which can slide back and forth along the length of the floating rod 11, and the floating part 12 moves up and down with the liquid level inside the connecting pipe 7.

[0065] The heating module is an electric heating tube, which is located at the bottom of the inner liner 15 and fits against the outer surface of the bottom of the inner liner 15. The heating module is covered with a heat insulation layer.

[0066] To address this embodiment, a quantitative decoction method is provided, employing the aforementioned traditional Chinese medicine decoction equipment, as detailed below:

[0067] First, the prepared medicinal slices are placed into the inner pot 15. Then, the final dosage of the decoction is determined according to the prescription. The corresponding dosage of the decoction is input into the control module of the equipment and converted into water level data. After the decoction time is set, the control module controls the decoction and sets the number of times water is added, the amount of water added at one time, and the decoction time at one time according to the water level data.

[0068] During decoction, water is added in a single batch through the water inlet pipe 4. The water level corresponding to the single batch of water added is at least above the highest point of the shaken medicinal slices in the inner pot 15. Then, decoction is started until boiling. During the single decoction time, the control module controls the continuous replenishment of water to ensure that the water level in the inner pot 15 is maintained at the level corresponding to the single batch of water added. After the single decoction time is completed, the decoction in the inner pot 15 is exported to the water storage area. After exporting, the single batch of water is injected into the inner pot 15 again for repeated decoction until the required number of water additions is reached.

[0069] It should be noted that the above-mentioned multiple heating method is based on the principle of solubility of substances in water. If a fixed amount of water is added at once for heating and boiling, the effective components in the medicinal slices will precipitate and dissolve in the water, or form suspended matter or impurities suspended in the decoction under heating conditions. However, the efficiency of the precipitation of effective components from the medicinal slices varies under different concentration conditions. If a small amount of water is added each time for decoction, the boiling time is shorter, and the water concentration is lower each time, which is conducive to the continuous precipitation of effective components from the medicinal slices, thereby improving efficiency.

[0070] Furthermore, in order to achieve better water volume control and effective component extraction, a reflux pump can be installed in the water storage area, which can be controlled by the control module to perform at least one reflux and re-decoction after the decoction is completed.

[0071] It should also be noted that, for this method of multiple decoctions, heat insulation material is provided between the body 2 and the inner liner 15 to ensure that the heat of the decoction entering the water storage area dissipates slowly, thus facilitating secondary decoction.

[0072] In some embodiments, to ensure that the water output is not affected by the water absorption of the medicinal slices, the decoction equipment in the above embodiments is further structurally optimized. Two optimization schemes are included:

[0073] (1) A lifting mechanism is provided inside the inner pot 15. The lifting mechanism includes a funnel for placing the medicinal slices and a lifting mechanism provided on the funnel. The lifting mechanism can lift the medicinal slices to make them higher than the water surface, so as to calculate the actual amount of soup that can be discharged during the heating and decocting process or after soaking in water. The control module calculates the liquid level value after the medicinal slices are lifted, and after obtaining the difference, adds water of the same amount as the difference. After soaking the medicinal slices for a certain period of time, it lifts them again and detects the change in water level. If there is still a difference, it adds water of the difference until there is no difference.

[0074] (2) Regarding the above-mentioned structural design with a water storage area, the volume of the water storage area is smaller than that of the inner tank 15. To facilitate the calculation of the actual decoction dosage, after each decoction, the control module first records a water level value. After the decoction is completely drained, water is added again, and the liquid level height under the same water volume is recorded. The difference in water volume is then obtained from the liquid level height as the water absorption of the medicinal slices. This difference is then added to the average amount of water added in subsequent single decoctions. At the same time, the corresponding water level value of the medicinal slices in the inner tank 15 that needs to be reached to achieve the rated decoction dosage is calculated. After the last single decoction, all the decoction in the water storage area is returned to the inner tank 15, and the water level value is calculated again to see if the corresponding water level value has been reached. If the difference is large, the decoction is continued to evaporate or water is added and decocted to maintain the corresponding water level value before being discharged.

[0075] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. A quantitative decoction method, employing a traditional Chinese medicine decoction device, characterized in that: The Chinese medicine decoction equipment includes an open tank with a top cover (1) at its opening, an outward-extending water inlet pipe (4) on the upper side of one side of the tank, and an outward-extending water outlet pipe (6) at the bottom. The canister has a cavity for holding Chinese medicine packets or decoction pieces, and a heating module installed inside the canister heats the Chinese medicine packets or decoction pieces containing water in the cavity. A connecting pipe (7) is also provided on one side of the tank. The connecting pipe (7) has at least two connecting pipes, one high and one low, that connect to the inside of the tank. A level gauge (8) is provided at the top of the connecting pipe (7). Both the inlet pipe (4) and the outlet pipe (6) are equipped with solenoid valves, and the heating module, the solenoid valves and the level gauge (8) are all connected to the control module. First, the prepared medicinal slices are loaded into the cavity. Then, the final dosage of the decoction is determined according to the prescription. The corresponding dosage of the decoction is input into the control module of the device and converted into water level data. After the decoction time is set, the control module controls the decoction. Before decoction, the control module determines the first water level threshold and the second water level threshold based on the water level data. When decocting, the first water injection should be done at a level lower than the rated soup dosage. After the water injection is completed, the heating module should be turned on and the decoction should be brought to a boil and kept boiling. When the water level drops to the first water level threshold, the solenoid valve of the water inlet pipe (4) is opened to allow water to enter until the water level reaches the second water level threshold. Then the water inlet is stopped and the boiling continues while ensuring that the water level in the cavity is not lower than the first water level threshold. When the actual decoction time exceeds 90% of the rated decoction time, the first and second water level thresholds are cancelled, and the third water level threshold is determined based on the rated soup dosage. Water is added after the water level in the cavity is lower than the third water level threshold. The decoction is stopped when the water level after adding water is 1-5% higher than the third water level threshold, until the decoction is completed.

2. The quantitative decoction method according to claim 1, characterized in that: The tank body includes a tank body (2) with two ports, the top port being covered by a removable top cover (1), and the bottom having a bottom cover (3) for sealing.

3. The quantitative decoction method according to claim 2, characterized in that: The inner liner (15) extends inward from the upper port edge inside the can body (2) to form a downwardly recessed inner liner (15), and the inner liner (15) has a gap with the can body (2).

4. The quantitative decoction method according to claim 3, characterized in that: The inner liner (15) has a water outlet at the center of its bottom, and the water outlet is connected to a water outlet pipe (6). The water outlet pipe (6) extends out of the tank body (2) and connects to the external structure.

5. The quantitative decoction method according to claim 3, characterized in that: The inner liner (15) has a water outlet at the center of its bottom. A water storage area is formed between the bottom of the inner liner (15) and the bottom cover (3). The water outlet is connected to the lower water storage area. The water outlet pipe (6) is connected to the water storage area.

6. The quantitative decoction method according to claim 5, characterized in that: The bottom cover (3) is connected to the tank body (2) via a flange.

7. The quantitative decoction method according to claim 3, characterized in that: The connecting pipe (7) has an opening at the top, and the level gauge (8) is installed at the opening; The level gauge (8) has a floating rod (11) extending to the bottom of the connecting pipe (7), and the bottom end of the floating rod (11) is fixedly connected to the bottom end of the connecting pipe (7); The floating rod (11) is fitted with a magnetic floating part (12) that can slide back and forth along the length of the floating rod (11). The floating part (12) moves up and down with the liquid level inside the connecting pipe (7).

8. The quantitative decoction method according to claim 3, characterized in that: The heating module is an electric heating tube. The heating module is located at the bottom of the inner liner (15) and is attached to the outer surface of the bottom of the inner liner (15). The heating module is covered with a heat insulation layer.

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