Traditional Chinese medicine material water flying device and water flying method

Abstract

A traditional Chinese medicine material water flying device, including: box seat, which is provided with valve seat, valve core is arranged in valve seat, through flow channel is arranged on valve core, valve rod of valve core extends to outside of valve seat, outlet pipe is arranged at bottom of valve seat; Mortar is arranged on box seat, and liquid outlet is arranged at bottom; Pestle is arranged above mortar, and is connected on output shaft of motor through longitudinal gap adjusting unit, and bottom of pestle is provided with a position avoiding groove. The traditional Chinese medicine material water flying device can realize automatic water flying operation, water can be added for premixing after water grinding, cup is arranged on rotating disc, opening and closing of outlet passage can be linkage controlled through rotating rotating disc, so that the cup can respectively hold suspension liquid obtained by water flying each time, and the suspension liquid can be successively static sedimentation.

Description

Technical Field

[0001] This invention relates to the field of water-milling of medicinal materials, specifically to a water-milling device and method for traditional Chinese medicine. Background Technology

[0002] "Water-milling" is a traditional Chinese medicine processing method that utilizes the properties of water to process medicinal materials into extremely fine powder. Through the principle of "using water as a medium to separate coarse and fine powders," it can obtain extremely fine medicinal powder while effectively removing impurities and some toxic components.

[0003] As a classic physical purification and refining technique, the water-milling process is still widely used in modern Chinese medicine manufacturing. The processed medicinal herbs are placed in a mortar, a small amount of water is added, and they are patiently ground into a fine paste. Once the paste is repeatedly ground until it is smooth to the touch and free of bright specks, a large amount of water is immediately added and thoroughly stirred, allowing the extremely fine medicinal particles to form a suspension. This suspension is the essence of the "milling" process in water-milling. After stirring, the mixture is allowed to stand briefly. When the coarse particles sink, the turbid upper suspension is quickly poured into another clean container. All the poured-out suspensions are collected in a large container and allowed to settle completely, allowing all the suspended fine powder to settle to the bottom. After carefully pouring off the supernatant, the powder settled at the bottom is the Chinese medicinal material obtained through the water-milling process.

[0004] Currently, when using the water-milling process for Chinese medicinal herbs, it needs to be done in batches. A large amount of water is added to the already paste-like herbs in a mortar, and the mixture is thoroughly stirred to obtain a suspension. This suspension is then poured out. The mortar is used for a small percentage of the water-milling time, resulting in low overall efficiency. Pouring the suspension from the mortar requires the operator to hold the mortar firmly with one hand, maintaining a stable tilt angle, and decisively pouring the upper suspension into a clean container prepared nearby. Shaking and interruptions should be minimized during the pouring process. This requires not only a lightweight mortar but also the operator's experience.

[0005] This invention provides a water-milling device for Chinese medicinal materials. A movable liquid outlet is set at the bottom of the mortar. After each grinding, the suspension in the mortar is poured out downward by hydraulic pressure and negative pressure. The mortar is continuously rinsed with clean water to avoid the residue of the suspension. The mortar device no longer needs to be tilted, and can realize automated grinding and liquid discharge. Summary of the Invention

[0006] In response to the problems raised in the background art, the present invention provides a water-flying device and method for Chinese medicinal materials to solve these problems. The present invention will be further described below.

[0007] A water-milling device for Chinese medicinal materials, comprising: A housing with a valve seat on it, a valve core inside the valve seat, a through flow channel on the valve core, a valve stem extending outside the valve seat, and an outlet pipe at the bottom of the valve seat. A mortar and pestle is set on a base and has a liquid outlet at the bottom. The pestle is positioned above the mortar and connected to the output shaft of the motor via a longitudinal clearance adjustment unit. It has a clearance groove at its bottom.

[0008] Furthermore, the spherical curvature of the inner wall of the mortar matches the curvature of the pestle, and the inner wall of the mortar has a rough surface to increase friction and thus improve the crushing efficiency of Chinese medicinal materials; the mortar is fixed on a frame, and the frame is fixed on a box base.

[0009] Furthermore, a ring-shaped water pipe is connected to the frame, and nozzles are evenly distributed on the water pipe. Clean water can be added into the mortar through the nozzles. In a single water-flying process, the nozzles can add water into the mortar in three water-addition stages: the water-grinding stage, the pre-mixing stage, and the outflow stage.

[0010] Furthermore, it also includes a drainage tube, which comprises a connecting tube wall and a lower connecting ring. A cover is connected to the outlet tube, and an upper connecting ring is connected to the bottom of the cover. The lower connecting ring is connected to the upper connecting ring. The top of the tube wall extends into the cavity formed by the outlet tube and the cover. The outlet tube, tube wall, and cover form a bent airflow channel. An air pipe connector is provided on the cover, which is connected to an air pump via an air pipe. When the premixed liquid has insufficient fluidity, an auxiliary cover plate is used to cover the bottom outlet of the drainage tube, and the air pump is started. This creates a negative pressure in the valve seat, using the pressure difference to accelerate the outflow of the premixed liquid. The bent airflow channel is designed to prevent the premixed liquid from overflowing and being lost.

[0011] Furthermore, it also includes a base with a turntable that rotates on it. The turntable has multiple cup placement positions, each with a cup placed there. Each suspension obtained from the water-jetting process is collected through a different cup, ensuring sufficient settling time for the resulting suspension.

[0012] Furthermore, a suspension is fixedly connected to the valve seat, a guide rod is connected to the suspension, a rack slides on the guide rod, a spring is sleeved on the guide rod, an extension rod is connected to the rack, and a roller is provided at the bottom of the extension rod; a stop protrusion is provided on the edge of the turntable, and a tooth is keyed to the end of the valve stem, the tooth meshing with the rack. After premixing, rotating the turntable rotates the next empty cup below the drainage tube, simultaneously opening the outflow channel, allowing the premixed liquid to enter the cup below.

[0013] Furthermore, the top surface of the mortar base is equipped with radial heat dissipation fins, and the mortar contacts these fins. One side of the mortar base has an air inlet, and the other side has a fan. The frictional heat generated by the mortar during the water grinding stage can be cooled by air cooling, ensuring that the mortar temperature remains within a safe threshold during this stage.

[0014] Furthermore, a bracket is connected to the base, a top plate is connected to the bracket, the motor is fixed to the top plate, and the housing is fixed to the bracket.

[0015] A water-milling method for Chinese medicinal herbs includes the following steps: During the feeding stage, the target amount of Chinese medicinal materials are added between the pestle and the mortar, and an appropriate amount of water is added into the mortar through the nozzle to control the pestle to press down on the mortar. In the water grinding stage, the mortar and pestle are rotated by a motor, and the fan is started to cool the mortar. The mortar and pestle are ground at high speed and low temperature with water for a set time to obtain a fine powder paste. During the premixing stage, the pestle is moved upward a short distance, and an appropriate amount of water is added to the mortar again through the nozzle. Under the action of the rotating pestle, the water and the powder paste form a premixed liquid. During the outflow stage, rotate the turntable to rotate the next empty cup to the bottom of the drainage tube. At this time, the linkage valve core opens the outflow channel, and the premixed liquid flows down into the cup. The nozzle continuously adds water into the mortar, and the water flow washes the surface of the mortar and pestle to avoid the residue of the medicine.

[0016] When the premixed liquid has insufficient fluidity, at the initial stage of the outflow, start the air pump and cover the bottom outlet of the drain pipe with an auxiliary cover plate. A negative pressure state is formed in the valve body, and the pressure difference accelerates the outflow of the premixed liquid. After the premixed liquid starts to flow, stop the air pump.

[0017] Beneficial effects: Compared with the prior art, the water-milling device for Chinese medicinal materials of the present invention can realize automated water-milling operation. After water milling, water can be added for pre-mixing. A container is set on the turntable. By rotating the turntable, the opening and closing of the outflow path can be controlled in a linkage manner to ensure that the container can collect the suspension obtained from each water milling, and the suspension can be settled and precipitated sequentially. Attached Figure Description

[0018] Figure 1 : A schematic diagram of the structure of the water-milling device for Chinese medicinal materials in this invention.

[0019] Figure 2 : Schematic diagram of the internal structure of the housing.

[0020] Figure 3 : Structural diagram of the base.

[0021] Figure 4 : A cross-sectional view of the mortar and pestle.

[0022] Figure 5 : Schematic diagram of the structure of a mortar and pestle.

[0023] Figure 6 : Schematic diagram of the internal structure of the valve seat.

[0024] In the diagram: 1. Mortar and pestle; 2. Liquid outlet; 201. Frame; 3. Pestle; 4. Alternating groove; 401. Motor; 5. Longitudinal clearance adjustment unit; 6. Valve seat; 7. Outlet pipe; 701. Cover; 702. Upper connecting ring; 703. Air pipe connector; 704. Valve core; 8. Valve stem; 9. Container; 10. Drain pipe; 11. Pipe wall; 111. Lower connecting ring; 112. Annular water pipe; 12. Nozzle; 13. Base; 14. Turntable; 15. Stop protrusion; 151. Suspension; 16. Guide rod; 17. Rack; 18. Spring; 19. Extension rod; 20. Roller; 21. Tooth; 22. Heat dissipation fins; 23. Air inlet window; 24. Fan; 25. Bracket; 26. Top plate; 27. Detailed Implementation

[0025] Next, we will combine the appendix Figures 1-6 A specific embodiment of the present invention will be described in detail below.

[0026] Reference Appendix Figure 1 , Figure 4 and Figure 5 A water-milling device for Chinese medicinal materials includes a box base 1, on which a mortar 2 is connected. The mortar 2 is made of wear-resistant material, preferably agate or zirconia mortars with high Mohs hardness. For easy disassembly and installation, the mortar 2 is fixed to a frame 3, which is fixed to the box base 1 by a locking device.

[0027] A pestle 4 is placed above the mortar 2. The pestle 4 rotates continuously under the drive of the motor 5. The spherical curvature of the inner wall of the mortar 2 matches the curvature of the outer shape of the pestle 4. The inner wall of the mortar 2 adopts a moderately "rough" surface, such as a frosted texture, to increase friction and thus improve the crushing efficiency of Chinese medicinal materials.

[0028] The water-milling process requires grinding medicinal materials into an extremely fine paste. This necessitates that the grinding head and the inner wall of the mortar be in as close contact as possible to effectively pulverize the medicinal particles through friction. Firstly, different Chinese medicinal materials vary in hardness and toughness, requiring different grinding forces and spacing. Secondly, before adding the medicinal materials, a relatively large space is needed between the mortar and pestle. Therefore, the gap between the mortar and pestle is not fixed; see the attached diagram. Figure 5 In this embodiment, the longitudinal gap adjustment unit 6, which is based on the prior art, is used to control the gap between the mortar and the pestle. The longitudinal gap adjustment unit 6 is located between the motor 5 and the pestle 4.

[0029] Reference Appendix Figure 1 , Figures 4-6 The mortar 2 has a liquid outlet 201 at the bottom, a valve seat 7 is connected to the box seat 1, a valve core 8 is provided inside the valve seat 7, a through flow channel is provided on the valve core 8, the valve stem 9 of the valve core 8 extends to the outside of the valve seat 7, and an outlet pipe 701 is provided at the bottom of the valve seat 7; the pestle 4 has a clearance groove 401 at the bottom.

[0030] The valve core 8 can be rotated by controlling the valve stem 9, thereby controlling the opening and closing of the suspension's outflow path. Specifically, before the suspension flows out, the through-flow channel of the valve core 8 is misaligned with the outlet 201 at the bottom of the mortar 2, and a portion of the valve core 8 protrudes upwards from the outlet 201. This exposed part is adapted to the clearance groove 401 at the bottom of the pestle 4, and the outflow path is closed. When the suspension needs to flow out, the valve core 8 is rotated by rotating the valve stem 9, and the through-flow channel of the valve core 8 coincides with the outlet 201 at the bottom of the mortar 2, opening the outflow path, and the suspension can flow downwards under gravity.

[0031] Because the pestle 4 rotates under the drive of a motor, a predetermined grinding time can be set to ensure thorough grinding. After thorough grinding, the Chinese medicinal materials in the mortar 2 become a fine powder paste. After grinding, the pestle 4 continues to rotate under the drive of the motor, but is lifted a short distance by the lifting action of the longitudinal gap adjustment unit 6, increasing the distance between it and the mortar 2. Water is then added to the mortar 2, and under the action of the rotating pestle 4, the paste-like powder and water form a suspension.

[0032] In the water-milling process, the amount of water added to form a suspension varies depending on the purpose and the medicinal materials, but it may exceed the space between the pestle 4 and the mortar 2. In this embodiment, the suspension will not be formed in the mortar 2. Instead, a continuous flow of water will be formed, carrying the paste-like medicinal powder out of the mortar 2 and eventually converging in the container 10 below the mortar 2, where a suspension will be formed.

[0033] In the initial stage of adding water, the added water and the paste-like Chinese medicinal materials form a premix in the mortar 2 to improve fluidity. The fine powder obtained in the water grinding stage has extremely small particles and a very large total surface area. The surface tension "pulls" the tiny powder particles together, presenting a viscous paste-like consistency with certain flow resistance. The premix obtained from some medicinal materials has high viscosity resistance, and its fluidity is insufficient to flow smoothly and quickly through the liquid outlet 201 at the bottom.

[0034] Based on this, this embodiment uses differential pressure as an auxiliary means to increase the outflow velocity of some poorly flowing premixed liquids. (See attached figure) Figure 6 Specifically, it also includes a drainage tube 11, which includes an integrally connected tube wall 111 and a lower connecting ring 112. A cover 702 is connected to the outlet tube 701, and an upper connecting ring 703 is integrally connected to the bottom of the cover 702. The lower connecting ring 112 and the upper connecting ring 703 are connected by fasteners, so that the drainage tube 11 can be installed upward on the valve seat 7. The top of the tube wall 111 extends into the cavity formed by the outlet tube 701 and the cover 702, that is, the outlet tube 701, the tube wall 111 and the cover 702 form a bent airflow channel. The cover 702 is provided with an air pipe connector 704, which is connected to the air pump through an air pipe.

[0035] After the premixed liquid is formed in the mortar 2, the valve core is rotated to open the outflow path. If the premixed liquid does not flow out or flows out slowly, the air pump is turned on. An auxiliary cover plate covers the bottom outlet of the drain pipe 11. The presence of the air pump reduces the air pressure in the valve seat 7, creating a negative pressure space. The pressure difference forces the premixed liquid between the mortar 2 and the pestle 4 into the valve seat. After the premixed liquid enters, the fluid kinetic energy will push open the auxiliary cover plate and fall into the container 10 below. Once the premixed liquid starts flowing, the air pump can be stopped, and the premixed liquid can flow out continuously and smoothly. The tortuous airflow channel formed by the outflow pipe 701, the pipe wall 111, and the cover 702 is designed to avoid the overflow and loss of the premixed liquid.

[0036] Reference Appendix Figure 4 A ring-shaped water pipe 12 is connected to the frame 3, and nozzles 13 are evenly distributed on the water pipe. Water can be added to the mortar 2 through the nozzles 13. In a single water-milling process, the nozzles 13 have three water-injection stages: the water-grinding stage, after adding Chinese medicinal materials, the nozzles 13 add an appropriate amount of water to the mortar 2 to keep the medicinal materials moist, maximize the friction between solid particles, and achieve efficient pulverization; the premixing stage, after the Chinese medicinal materials are ground finely enough, the nozzles 13 add a certain amount of water to the mortar 2, which mixes with the already paste-like medicinal materials under the action of the pestle, suspending the ultrafine powder to obtain a premixed liquid; the outflow stage, the outflow path is opened, the premixed liquid flows out into the container 10, and the nozzles 13 continuously inject water into the mortar, the water flow continuously washes the surface of the mortar 2 and the pestle, avoiding medicinal material residue.

[0037] The amount of any type of Chinese medicinal material that can be ground in a single batch is limited, requiring multiple water-milling processes, i.e., repeated operations and separations. After a single water-milling, a suspension is obtained in container 10. Finally, all the obtained suspensions are mixed and allowed to stand, allowing the suspended fine powder to completely settle. The supernatant is then discarded, and the bottom precipitate is the target medicinal material. In the method of collecting all the suspensions using a single container 10, the subsequent suspensions collected in container 10 are mixed with the previously collected suspensions, and then allowed to settle to obtain the target water-milled medicine, which is time-consuming overall.

[0038] In this embodiment, the suspension obtained from each water levitation is collected in a single container 10, so that subsequent water levitation processes do not affect the previous settling of the container 10. (See attached document) Figure 1 and Figure 3 A base 14 is provided, and a turntable 15 is rotatably mounted on the base 14. The turntable 15 has multiple placement positions for cups 10, and each placement position is occupied by a cup. After each water levitation process, the turntable 15 can be rotated to move the empty cups 10 to the bottom of the drainage tube 11. This ensures that the suspension obtained from each water levitation operation is collected by a different cup 10, and the resulting suspension has sufficient sedimentation time.

[0039] Reference Appendix Figure 6A suspension 16 is fixedly connected to the valve seat 7, a guide rod 17 is connected to the suspension 16, a rack 18 is slidably provided on the guide rod 17, a spring 19 is also sleeved on the guide rod 17, an extension rod 20 is connected to the rack 18, and a roller 21 is provided at the bottom of the extension rod 20; a stop protrusion 151 is provided on the edge of the turntable 15, and a tooth 22 is keyed to the end of the valve stem 9, and the tooth 22 meshes with the rack 18.

[0040] After premixing in mortar 2 is completed, as mentioned above, a new container 10 needs to be replaced before the flow channel is opened. In this embodiment, during the water jet process, roller 21 is pressed tightly against a certain position between the stop protrusions 151 on the turntable 15 under the elastic force of spring 19, and rack 18 is in a low position. In this state, valve core 8 is in a closed state. After premixing is completed, turntable 15 is rotated to rotate the next empty container 10 below the drainage tube 11. At this time, roller 21 rolls onto stop protrusion 151, rack 18 is lifted to a high position, spring 19 is further compressed, and rack 18 drives valve core 8 to rotate through its meshing with tooth 22 during the lifting process. Valve core 8 enters the open state, and premixed liquid enters the container 10 below.

[0041] The appropriate amount of water added during the water-grinding stage allows it to penetrate the microscopic cracks in the medicinal materials, creating a "wedge-shaped effect" during grinding to aid in breakage. Simultaneously, the water acts as a lubricant, preventing powder agglomeration and allowing the grinding head to more efficiently pulverize individual particles, resulting in a thick, flowable paste. However, the water-grinding stage generates a significant amount of frictional heat, which can cause the moisture to evaporate, severely impacting the quality of the water-milling process.

[0042] In this embodiment, the mortar 2 is cooled by air cooling to keep the temperature within a safe threshold during the water grinding stage. (See attached document.) Figure 2 and Figure 3 The top surface of the mortar base 1 is provided with radial heat dissipation fins 23. After the mortar 2 is locked onto the mortar base 1 along with the frame 3, the mortar 2 comes into contact with the heat dissipation fins 23. One side of the mortar base 1 is provided with an air inlet 24, and the other side is provided with a fan 25. The frictional heat generated by the mortar during the water grinding stage is conducted to the heat dissipation fins 23 through the contact between the mortar and the heat dissipation fins 23. After the fan 25 is turned on, the alternating airflow formed inside and outside the mortar base 1 flows through the heat dissipation fins 23, which can dissipate the heat to the outside.

[0043] Reference Appendix Figure 1 A bracket 26 is connected to the base 14, and a top plate 27 is connected to the bracket 26. The motor 5 is fixed on the top plate 27, and the housing 1 is fixed on the bracket 26.

[0044] A water-milling method for Chinese medicinal herbs includes the following steps: During the feeding stage, the target amount of Chinese medicinal materials are added between the pestle 4 and the mortar 2. An appropriate amount of water is added into the mortar 2 through the nozzle 13, and the pestle 4 is controlled to press down on the mortar 2. In the water grinding stage, the motor 5 drives the pestle 4 to rotate, and the fan 25 is started to cool the mortar. The mortar is ground at high speed and low temperature with water for a set time to obtain a fine powder paste. During the premixing stage, the pestle 4 is moved upward a short distance, and the nozzle 13 adds an appropriate amount of water to the mortar 2 again. Under the action of the rotating pestle 4, the water and the powder paste form a premixed liquid. During the outflow stage, turntable 15 is rotated to rotate the next empty cup 10 to below the drainage tube 11. At this time, the linkage valve core 8 opens the outflow channel, and the premixed liquid flows down into the cup 10. The nozzle 13 continuously adds water into the mortar 2, and the water flow washes the surface of the mortar and pestle to avoid residue of medicine.

[0045] When the premixed liquid has insufficient flowability, at the initial stage of the outflow, the air pump is started and an auxiliary cover plate is used to cover the bottom outlet of the drain pipe 11. A negative pressure state is formed in the valve body 7, and the pressure difference accelerates the outflow of the premixed liquid. After the premixed liquid starts to flow, the air pump is stopped.

[0046] The herbal water-milling device of the present invention can realize automated water-milling operation. After water milling, water can be added for pre-mixing. A container is set on the turntable. By rotating the turntable, the opening and closing of the outflow path can be controlled in a linkage manner to ensure that the container can collect the suspension obtained from each water milling, and the suspension can be settled and precipitated sequentially.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A water-milling device for traditional Chinese medicinal materials, characterized in that, include: A housing (1) is provided with a valve seat (7), a valve core (8) is provided inside the valve seat (7), a through flow channel is provided on the valve core (8), the valve stem (9) of the valve core (8) extends to the outside of the valve seat (7), and an outlet pipe (701) is provided at the bottom of the valve seat (7). A mortar (2) is set on a box base (1) and has a liquid outlet (201) at the bottom. The pestle (4) is placed above the mortar (2) and connected to the output shaft of the motor (5) through the longitudinal gap adjustment unit (6). A clearance groove (401) is provided at its bottom.

2. The water-milling device for Chinese medicinal materials according to claim 1, characterized in that: The mortar (2) is fixed on a frame (3), and the frame (3) is fixed on the box base (1); The spherical curvature of the inner wall of the mortar (2) is adapted to the curvature of the outer shape of the pestle (4), and the inner wall of the mortar (2) has a rough surface.

3. The water-milling device for Chinese medicinal materials according to claim 2, characterized in that: The frame (3) is connected to a ring-shaped water pipe (12), and nozzles (13) are evenly distributed on the water pipe.

4. The water-milling device for Chinese medicinal materials according to claim 3, characterized in that: The system also includes a drainage tube (11), which includes a connecting tube wall (111) and a lower connecting ring (112). A cover (702) is connected to the outlet tube (701), and an upper connecting ring (703) is connected to the bottom of the cover (702). The lower connecting ring (112) is connected to the upper connecting ring (703). The top of the tube wall (111) extends into the cavity formed by the outlet tube (701) and the cover (702). The outlet tube (701), the tube wall (111), and the cover (702) form a bent airflow channel. An air pipe connector (704) is provided on the cover (702), and the air pipe connector (704) is connected to the air pump through an air pipe.

5. The water-milling device for Chinese medicinal materials according to claim 3 or 4, characterized in that: It also includes a base (14), on which a turntable (15) is rotatably mounted, and on the turntable (15) are multiple cup (10) placement positions, each of which is occupied by a cup.

6. The water-milling device for Chinese medicinal materials according to claim 5, characterized in that: A suspension (16) is fixedly connected to the valve seat (7), a guide rod (17) is connected to the suspension (16), a rack (18) is slidably provided on the guide rod (17), a spring (19) is sleeved on the guide rod (17), an extension rod (20) is connected to the rack (18), and a roller (21) is provided at the bottom of the extension rod (20); a stop protrusion (151) is provided on the edge of the turntable (15), and a tooth (22) is keyed to the end of the valve stem (9), and the tooth (22) meshes with the rack (18).

7. The water-milling device for Chinese medicinal materials according to claim 6, characterized in that: The top surface of the box base (1) is provided with heat dissipation fins (23), the mortar (2) is in contact with the heat dissipation fins (23), and the box base (1) is provided with an air inlet window (24) on one side and a fan (25) on the other side.

8. The water-milling device for Chinese medicinal materials according to claim 7, characterized in that: A bracket (26) is connected to the base (14), a top plate (27) is connected to the bracket (26), the motor (5) is fixed on the top plate (27), and the box base (1) is fixed on the bracket (26).

9. A method for water-milling Chinese medicinal materials, characterized in that, Includes the following steps: During the feeding stage, the target amount of Chinese medicinal materials are added between the pestle (4) and the mortar (2), and an appropriate amount of water is added into the mortar (2) through the nozzle (13) to control the pestle (4) to press down on the mortar (2); In the water grinding stage, the motor (5) drives the pestle (4) to rotate, and the fan (25) is started to cool the mortar. The mortar is ground for a set time in a high-speed, low-temperature water-adding state to obtain a fine powder paste. During the premixing stage, the pestle (4) is moved upward a short distance, and the nozzle (13) adds an appropriate amount of water to the mortar (2) again. Under the action of the rotating pestle (4), the water and the powder paste form a premixed liquid. During the outflow stage, rotate the turntable (15) to rotate the next empty cup (10) to the bottom of the drain pipe (11). At this time, the linkage valve core (8) opens the outflow channel, and the premixed liquid flows down into the cup (10). The nozzle (13) continuously adds water into the mortar (2), and the water flow washes the surface of the mortar and pestle to avoid the residue of the medicine.

10. The water-milling method for Chinese medicinal materials according to claim 9, characterized in that: When the premixed liquid is not fluid, in the early stage of the outflow stage, start the air pump and cover the bottom outlet of the drain pipe (11) with an auxiliary cover plate. A negative pressure state is formed in the valve body (7). The pressure difference accelerates the outflow of the premixed liquid. After the premixed liquid starts to flow, stop the air pump.

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