A Chinese herbal medicine grinding device

Abstract

This invention discloses a traditional Chinese medicine grinding device, comprising a grinding cylinder and a drive box. The grinding cylinder has a cover plate on its upper part. Inside the grinding cylinder, from top to bottom, are a primary grinding mechanism and a secondary grinding mechanism. The primary grinding mechanism includes a primary mortar and a primary grinding pestle, and the secondary grinding mechanism includes a secondary mortar and a secondary grinding pestle. Both the primary and secondary mortars have leakage holes, with the diameter of the leakage hole in the primary mortar being larger than that in the secondary mortar. The drive box is located at the bottom of the grinding cylinder, and a drive mechanism is located inside the drive box. The drive mechanism includes a motor frame, on which a drive motor is mounted. A rotating shaft is connected to the output shaft of the drive motor. The primary mortar, primary grinding pestle, secondary mortar, and secondary grinding pestle are all mounted on the rotating shaft. This invention employs a multi-stage grinding design, achieving uniform and efficient grinding of traditional Chinese medicine through progressively finer grinding, thus improving grinding efficiency.

Description

Technical Field

[0001] This invention belongs to the field of traditional Chinese medicine grinding, and specifically relates to a grinding device for traditional Chinese medicine materials. Background Technology

[0002] In the field of traditional Chinese medicine, the grinding of medicinal herbs is a crucial step in the production process of Chinese medicine preparations. The quality of the grinding directly affects the release of the medicinal effects of the herbs and the overall quality of the final preparation. Traditional methods of grinding medicinal herbs mainly rely on manual crushing and grinding. Although these methods can accomplish the grinding task to a certain extent, they have revealed many obvious shortcomings in practical applications.

[0003] First, manual crushing and grinding are inefficient and require a significant investment of manpower and time. With the continuous expansion of the traditional Chinese medicine market and the increasing demand, traditional manual grinding methods can no longer meet the needs of large-scale, high-efficiency production. This not only increases production costs but also limits the capacity and efficiency of traditional Chinese medicine production, becoming one of the bottlenecks restricting the development of the traditional Chinese medicine industry.

[0004] Secondly, the instability and inaccuracy of manual operation make it difficult to guarantee the grinding effect. Due to human factors, the particle size of medicinal materials is often uneven, which affects the subsequent preparation process and may also reduce the efficacy. In addition, because it is difficult to precisely control the medicinal materials during grinding, the effective components in the medicinal materials are easily lost, further affecting the efficacy.

[0005] Besides issues of efficiency and effectiveness, traditional grinding methods also pose certain safety hazards. Under prolonged, high-intensity working conditions, manual operation is prone to workplace injuries, making it difficult to guarantee workers' safety and health. This not only causes physical harm to workers but also brings additional economic losses and social burdens to enterprises.

[0006] To overcome the problems of traditional Chinese medicine grinding methods, in recent years, with the advancement of science and technology and the development of automation, some automated and mechanized grinding equipment has been gradually introduced into the field of Chinese medicine processing. These devices have improved grinding efficiency and effectiveness to some extent, but some limitations still exist. For example, some grinding equipment struggles to guarantee the uniformity and fineness of the medicinal materials, affecting the consistency and stability of the grinding results. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a Chinese herbal medicine grinding device that employs a multi-stage grinding design. Through progressively finer grinding, it achieves uniform and efficient grinding of Chinese herbal medicines. During each grinding stage, the device can precisely control the grinding of the herbs, ensuring consistency and uniformity of the grinding effect. This design not only improves grinding efficiency but also guarantees the integrity of the active ingredients in the herbs and the full realization of their medicinal efficacy.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A traditional Chinese medicine grinding device includes a grinding cylinder and a drive box. The upper part of the grinding cylinder is provided with a cover plate, and the cover plate is provided with a handle. The lower part of the grinding cylinder is provided with a cylinder bottom. Inside the grinding cylinder, from top to bottom, there are a primary grinding mechanism and a secondary grinding mechanism. The primary grinding mechanism includes a primary mortar and a primary grinding pestle. The secondary grinding mechanism includes a secondary mortar and a secondary grinding pestle. Both the primary and secondary mortars are provided with a medicine leakage hole, and the diameter of the medicine leakage hole in the primary mortar is larger than that in the secondary mortar. The bottom of the grinding cylinder is provided with a drive box, and the drive box is provided with a drive mechanism. The drive mechanism includes a motor frame, on which a drive motor is mounted. The output shaft of the drive motor is connected to a rotating shaft. The primary mortar, the primary grinding pestle, the secondary mortar, and the secondary grinding pestle are all mounted on the rotating shaft.

[0010] Furthermore, the upper part of the primary grinding mechanism is provided with a pre-cutting mechanism, which includes a blade holder with several blades. A base is rotatably connected to the upper part of the blade holder, and the upper end of the rotating shaft extends into the interior of the base. A fixing knob is threadedly connected to the upper end of the rotating shaft. Several medicine pushing plates are connected to the outside of the base.

[0011] Furthermore, the primary grinding pestle and the secondary grinding pestle are slidably connected to the rotating shaft, and the connection method includes, but is not limited to, keyway or key bar connection. The upper part of the primary grinding pestle and the secondary grinding pestle are provided with a preload spring, and the upper end of the preload spring is connected to a baffle, which is connected to the rotating shaft.

[0012] Furthermore, the baffle is threadedly connected to the rotating shaft.

[0013] Furthermore, the inner walls of the primary and secondary mortars are provided with several mortar spacers, and the outer walls of the primary and secondary grinding pestles are provided with several pestle spacers.

[0014] Furthermore, the mortar and pestle spacer has a hollow structure, and the primary and secondary mortars and pestles are equipped with a cooling device on their exterior. The cooling device includes a water inlet pipe connected to a cooling medium, which includes, but is not limited to, tap water and liquid nitrogen. The lower part of the primary and secondary mortars and pestles is equipped with a water inlet ring pipe connected to a water inlet pipe. Several water inlet branch pipes are provided inside the water inlet ring pipe, and the water inlet branch pipes are connected to the bottom of the mortar and pestle spacer. The upper part of the primary and secondary mortars and pestles is equipped with a return water ring pipe. A return water pipe is connected to the outside of the return water ring pipe, and several return water branch pipes are provided inside the return water ring pipe. One end of the return water branch pipe is connected to the top of the mortar and pestle spacer.

[0015] Furthermore, the primary grinding pestle, the secondary grinding pestle, and the bottom of the cylinder are all frustoconical to facilitate the falling of medicinal materials. A scraping mechanism is provided on the upper part of the bottom of the cylinder. The scraping mechanism includes a connecting plate, which is fixedly connected to the rotating shaft. Several scrapers are provided on the outside of the connecting plate, and the scrapers abut against the upper surface of the bottom of the cylinder.

[0016] Furthermore, a connecting arm is fixedly connected to the end of the output shaft of the drive motor, and a slider is fixedly connected to the other end of the connecting arm. A guide rail is fixedly connected to the lower part of the cylinder, and a rack is slidably connected to the lower part of the guide rail. A grooved ring plate is fixedly connected to the lower part of the rack, and the slider is slidably installed in the grooved ring plate. A gear is meshed on one side of the rack, and the gear is fixedly connected to the lower end of the rotating shaft.

[0017] Furthermore, the drive box has a base at its lower part, and pins are provided on both sides of the drive box. The base includes a bottom plate, and support plates are provided on both sides of the bottom plate. The pins are movably mounted on the support plates.

[0018] Furthermore, the base plate is provided with end plates at both ends, and the rack is connected to extension rods at both ends, with rollers connected to the ends of the extension rods.

[0019] The beneficial effects of this invention are:

[0020] 1) This invention performs multi-stage grinding of Chinese medicinal materials through a primary grinding mechanism and a secondary grinding mechanism, which ensures the consistency and uniformity of the grinding effect of Chinese medicinal materials, and at the same time improves the efficiency of grinding Chinese medicinal materials.

[0021] 2) By setting up a pre-cutting mechanism to pre-cut the Chinese medicinal materials, the effect of grinding the Chinese medicinal materials is further guaranteed and the efficiency of grinding the Chinese medicinal materials is improved.

[0022] 3) The primary and secondary grinding pestles are slidably connected to the rotating shaft. The preload spring with adjustable preload force is used to apply preload to the primary and secondary grinding pestles to grind the medicinal materials in the primary and secondary mortars, thus ensuring the grinding effect of Chinese medicinal materials.

[0023] 4) Mortar dividers are installed on the inner walls of the primary and secondary mortars, and pestle dividers are installed on the outer walls of the primary and secondary grinding pestles to ensure the grinding effect of Chinese medicinal materials; at the same time, the mortar dividers are connected to a cooling device, and the cooling medium cools down the primary and secondary mortars during the grinding of Chinese medicinal materials, avoiding the impact of high temperature on the efficacy of the medicine.

[0024] 5) A scraping mechanism is installed at the top of the bottom of the cylinder. When the rotating shaft rotates, it drives the scraping mechanism to rotate, scraping the medicinal materials off the bottom of the cylinder, thus ensuring the yield of the Chinese medicinal materials after grinding.

[0025] 6) The drive mechanism drives the rotating shaft and the primary and secondary grinding pestles connected to the rotating shaft to rotate in both directions, grinding the Chinese medicinal materials in the primary and secondary mortars in both directions, further ensuring the grinding effect of the Chinese medicinal materials.

[0026] 7) A base is set at the bottom of the drive box. Extension rods are set at both ends of the rack. When the rack slides back and forth, it drives the extension rods to move back and forth. When the extension rods move forward and contact the end plate at the front end of the base plate, the end plate generates a reverse thrust on the extension rods, realizing the automatic swing of the grinding cylinder, ensuring the grinding effect of Chinese medicinal materials, while reducing manual intervention and reducing the labor intensity of manual labor. Attached Figure Description

[0027] Appendix Figure 1 This is a schematic diagram of the structure of a Chinese herbal medicine grinding device according to the present invention.

[0028] Appendix Figure 2 This is a schematic diagram of the internal structure of a traditional Chinese medicine grinding device according to the present invention.

[0029] Appendix Figure 3 This is an exploded view of the drive mechanism in a traditional Chinese medicine grinding device of the present invention.

[0030] Appendix Figure 4 This is a cross-sectional view of a traditional Chinese medicine grinding device according to the present invention.

[0031] Appendix Figure 5 This is a schematic diagram of the bottom structure of the grinding device for Chinese medicinal materials according to the present invention.

[0032] Appendix Figure 6 This is an exploded view of the primary mortar and pestle in a traditional Chinese medicine grinding device of the present invention.

[0033] Appendix Figure 7 This is a cross-sectional view of the primary mortar and pestle in a traditional Chinese medicine grinding device of the present invention.

[0034] Appendix Figure 8 This is a schematic diagram of the pre-cutting mechanism assembly in a traditional Chinese medicine grinding device of the present invention.

[0035] Appendix Figure 9This is a schematic diagram of the base structure in a traditional Chinese medicine grinding device of the present invention.

[0036] In the diagram, 1. Base; 11. Base plate; 12. Support plate; 13. End plate; 2. Drive box; 21. Pin; 22. Motor frame; 23. Drive motor; 24. Connecting arm; 241. Slider; 25. Guide rail; 26. Rack; 261. Groove ring plate; 262. Extension rod; 263. Roller; 27. Gear; 28. Rotary shaft; 3. Grinding cylinder; 31. Cover plate; 32. Pre-cutting mechanism; 321. Knife holder; 322. Blade; 323. Base; 324. Pushing plate; 325. Fixing screw 33. Button; 33. Primary grinding mechanism; 331. Primary mortar and pestle; 332. Primary grinding pestle; 333. Leaking hole; 334. Mortar and pestle spacer; 335. Pestle spacer; 34. Preload spring; 35. Baffle; 36. Secondary grinding mechanism; 361. Secondary mortar and pestle; 37. Bottom of cylinder; 38. Scraping mechanism; 381. Connecting plate; 382. Scraper; 4. Cooling device; 41. Water inlet pipe; 42. Water inlet ring pipe; 43. Water inlet branch pipe; 44. Water return ring pipe; 45. Water return branch pipe; 46. Water return pipe. Detailed Implementation

[0037] The following will be combined with the appendix Figures 1-9 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to 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 invention.

[0039] like Figure 1 As shown, a traditional Chinese medicine grinding device includes a grinding cylinder 3 and a drive box 2. The upper part of the grinding cylinder 3 is provided with a cover plate 31, and the cover plate 31 is provided with a handle. The lower part of the grinding cylinder 3 is provided with a cylinder bottom 37. Figure 2As shown, the grinding cylinder 3 has a primary grinding mechanism 33 and a secondary grinding mechanism 36 arranged sequentially from top to bottom inside. The primary grinding mechanism 33 includes a primary mortar 331 and a primary grinding pestle 332, and the secondary grinding mechanism 36 includes a secondary mortar 361 and a secondary grinding pestle. Both the primary mortar 331 and the secondary mortar 361 are provided with a medicine leakage hole 333, and the diameter of the medicine leakage hole 333 of the primary mortar 331 is larger than the diameter of the medicine leakage hole 333 of the secondary mortar 361. Figure 2 , Figure 3 As shown, the bottom of the grinding cylinder 3 is provided with a drive box 2, and the drive box 2 is provided with a drive mechanism. The drive mechanism includes a motor frame 22, on which a drive motor 23 is mounted. A rotating shaft 28 is connected to the output shaft of the drive motor 23. The primary mortar 331, the primary grinding pestle 332, the secondary mortar 361, and the secondary grinding pestle are all mounted on the rotating shaft 28.

[0040] like Figure 2 , Figure 8 As shown, the primary grinding mechanism 33 is equipped with a pre-cutting mechanism 32 on its upper part. The pre-cutting mechanism 32 includes a blade holder 321, on which a plurality of blades 322 are provided. A base 323 is rotatably connected to the upper part of the blade holder 321. The upper end of the rotating shaft 28 extends into the interior of the base 323, and a fixing knob 325 is threadedly connected to the upper end of the rotating shaft 28. A plurality of medicine pushing plates 324 are connected to the outside of the base 323. When Chinese medicinal materials are poured into the grinding cylinder 3, they are first cut by the pre-cutting mechanism 32, which improves the efficiency of grinding Chinese medicinal materials.

[0041] In this embodiment, the primary grinding pestle 332 and the secondary grinding pestle are slidably connected to the rotating shaft 28, and the connection method includes, but is not limited to, keyway or key strip connection, such as... Figure 6 As shown, both the primary grinding pestle 332 and the secondary grinding pestle are equipped with a pre-compression spring 34 at their upper parts. The upper end of the pre-compression spring 34 is connected to a baffle 35, which is connected to the rotating shaft 28. The pre-compression spring 34 applies pre-pressure to the primary grinding pestle 332 and the secondary grinding pestle to grind the medicinal materials in the primary mortar 331 and the secondary mortar 361, thus ensuring the grinding effect of Chinese medicinal materials.

[0042] Furthermore, the baffle 35 is threadedly connected to the rotating shaft 28, making the preload of the preload spring 34 adjustable, thus ensuring the grinding effect of Chinese medicinal materials of different particle sizes.

[0043] like Figure 6 As shown, the inner walls of the primary mortar 331 and the secondary mortar 361 are provided with several mortar spacers 334, and the outer walls of the primary grinding pestle 332 and the secondary grinding pestle are provided with several pestle spacers 335. When the primary grinding pestle 332 and the secondary grinding pestle rotate, the pestle spacers 335 collide with the mortar spacers 334, which enhances the effect and efficiency of grinding Chinese medicinal materials.

[0044] like Figure 7 As shown, the mortar and pestle spacer 334 has a hollow structure. The primary mortar and pestle 331 and the secondary mortar and pestle 361 are externally equipped with a cooling device 4. The cooling device 4 includes a water inlet pipe 41, which is connected to a cooling medium, including but not limited to tap water and liquid nitrogen. Both the primary mortar and pestle 331 and the secondary mortar and pestle 361 have a water inlet ring pipe 42 at their lower parts, which is connected to the water inlet pipe 41. Several water inlet branch pipes 43 are provided inside the water inlet ring pipe 42 for water inlet... Branch pipe 43 is connected to the bottom of mortar and pestle spacer 334; both the primary mortar and pestle 331 and the secondary mortar and pestle 361 are provided with a return water ring pipe 44 at the top, a return water pipe 46 is connected to the outside of the return water ring pipe 44, and several return water branch pipes 45 are provided inside the return water ring pipe 44. One end of the return water branch pipe 45 is connected to the top of mortar and pestle spacer 334; when grinding Chinese medicinal materials, the cooling medium cools and lowers the temperature of the primary mortar and pestle 331 and the secondary mortar and pestle 361, avoiding the influence of high temperature on the efficacy of the medicine during grinding.

[0045] like Figure 4 , Figure 5 As shown, the primary grinding pestle 332, the secondary grinding pestle, and the bottom of the cylinder 37 are all frustoconical in shape to facilitate the falling of medicinal materials. A scraping mechanism 38 is provided on the upper part of the bottom of the cylinder. The scraping mechanism 38 includes a connecting plate 381, which is fixedly connected to the rotating shaft 28. Several scrapers 382 are provided on the outside of the connecting plate 381. The scrapers 382 abut against the upper surface of the bottom of the cylinder. When the rotating shaft 28 rotates, it drives the scraping mechanism 38 to rotate, scraping the medicinal materials on the bottom of the cylinder 37, thus ensuring the yield of the Chinese medicinal materials after grinding.

[0046] like Figure 3 As shown, a connecting arm 24 is fixedly connected to the end of the output shaft of the drive motor 23, and a slider 241 is fixedly connected to the other end of the connecting arm 24. A guide rail 25 is fixedly connected to the lower part of the bottom of the cylinder 37, and a rack 26 is slidably connected to the lower part of the guide rail 25. A grooved ring plate 261 is fixedly connected to the lower part of the rack 26, and the slider 241 is slidably installed in the grooved ring plate 261. A gear 27 is meshed on one side of the rack 26, and the gear 27 is fixedly connected to the lower end of the rotating shaft 28. When the drive motor 23 rotates, it drives the connecting arm 24 to rotate. When the connecting arm 24 rotates, it drives the rack 26 to slide back and forth in the guide rail 25 under the action of the grooved ring plate 261, thereby driving the gear 27 to rotate in a forward and reverse cycle. This, in turn, drives the rotating shaft 28 and the primary grinding pestle 332 and the secondary grinding pestle connected to the rotating shaft 28 to rotate in a forward and reverse cycle, further ensuring the grinding effect of the Chinese medicinal materials.

[0047] like Figure 1 , Figure 2 , Figure 9As shown, the drive box 2 has a base 1 at the bottom and pins 21 on both sides. The base 1 includes a bottom plate 11 and support plates 12 on both sides. The pins 21 are movably mounted on the support plates 12. When grinding Chinese medicinal materials, the grinding cylinder 3 is shaken to ensure the grinding effect of Chinese medicinal materials.

[0048] like Figure 3 , Figure 9 As shown, the base plate 11 has end plates 13 at both ends, and the rack 26 has extension rods 262 connected to both ends. The ends of the extension rods 262 are connected to rollers 263. When the rack 26 slides back and forth, it drives the extension rods 262 to move back and forth. When the extension rods 262 move forward and contact the end plates 13 at the front end of the base plate 11, the end plates 13 exert a backward pushing force on the extension rods 262, causing the grinding cylinder 3 to tilt. Similarly, when the extension rods 262 move backward, the grinding cylinder 3 tilts in the opposite direction, realizing the automatic swinging of the grinding cylinder 3, ensuring the effect of grinding Chinese medicinal materials, and reducing manual intervention and labor intensity.

[0049] When grinding Chinese medicinal herbs, the herbs are first placed inside the grinding cylinder 3, the cover plate 31 is closed, and the drive motor 23 is started. The drive motor 23 drives the rotating shaft 28 to rotate in both forward and reverse directions. The herbs are first sliced ​​by the pre-cutting mechanism 32, and then the sliced ​​herbs are ground in multiple stages by the primary grinding mechanism 33 and the secondary grinding mechanism 36. The multi-stage grinding design allows the herbs to be gradually refined through multiple processes, thus ensuring thorough and uniform grinding. In addition, through multi-stage grinding, the cell walls of the herbs are fully broken, making it easier for the active ingredients to dissolve and reducing losses during the grinding process. During the grinding process, the cooling device 4 cools and lowers the temperature of the primary mortar 331 and the secondary mortar 361, avoiding the impact of high temperatures on the efficacy of the herbs.

[0050] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A grinding device for traditional Chinese medicinal materials, comprising a grinding cylinder and a drive box, wherein the upper part of the grinding cylinder is provided with a cover plate, the cover plate is provided with a handle, and the lower part of the grinding cylinder is provided with a cylinder bottom, characterized in that, The grinding cylinder contains a primary grinding mechanism and a secondary grinding mechanism arranged sequentially from top to bottom. The primary grinding mechanism includes a primary mortar and pestle, and the secondary grinding mechanism includes a secondary mortar and pestle. Both the primary and secondary mortars have leakage holes, with the diameter of the leakage hole in the primary mortar being larger than that in the secondary mortar. A drive box is located at the bottom of the grinding cylinder, containing a drive mechanism. The drive mechanism includes a motor frame, on which a drive motor is mounted. A rotating shaft is connected to the output shaft of the drive motor, and the primary mortar, primary pestle, secondary mortar, and secondary pestle are all mounted on the rotating shaft. A connecting arm is fixedly connected to the end of the output shaft of the drive motor, and a slider is fixedly connected to the other end of the connecting arm. A guide rail is fixedly connected to the lower part of the cylinder. A rack is slidably connected to the lower part of the guide rail, and a grooved ring plate is fixedly connected to the lower part of the rack. A slider is slidably installed in the grooved ring plate. A gear meshes on one side of the rack, and the gear is fixedly connected to the lower end of the rotating shaft. A base is provided at the lower part of the drive box, and pins are provided on both sides of the drive box. The base includes a base plate, and support plates are provided on both sides of the base plate. The pins are movably installed on the support plates. End plates are provided at both ends of the base plate. Extension rods are connected to both ends of the rack, and rollers are connected to the ends of the extension rods. When the rack slides back and forth, it drives the extension rods to move back and forth. When the extension rods move forward and contact the end plates at the front end of the base plate, the end plates generate a backward thrust on the extension rods, causing the grinding cylinder to tilt. When the extension rods move backward, the grinding cylinder tilts in the opposite direction, realizing the automatic swinging of the grinding cylinder.

2. The Chinese herbal medicine grinding device according to claim 1, characterized in that, The primary grinding mechanism is equipped with a pre-cutting mechanism at its upper part. The pre-cutting mechanism includes a blade holder with several blades. A base is rotatably connected to the upper part of the blade holder. The upper end of the rotating shaft extends into the interior of the base, and a fixing knob is threaded to the upper end of the rotating shaft. Several medicine pushing plates are connected to the outside of the base.

3. The Chinese herbal medicine grinding device according to claim 1, characterized in that, The primary and secondary grinding pestles are slidably connected to the rotating shaft, and the connection method is keyway and key strip connection. The upper part of the primary and secondary grinding pestles is provided with a pre-compression spring, and the upper end of the pre-compression spring is connected to a baffle, which is connected to the rotating shaft.

4. The Chinese herbal medicine grinding device according to claim 3, characterized in that, The baffle is threadedly connected to the rotating shaft.

5. A traditional Chinese medicine grinding device according to claim 1, characterized in that, The inner walls of the primary and secondary mortars are provided with several mortar spacers, and the outer walls of the primary and secondary grinding pestles are provided with several pestle spacers.

6. A traditional Chinese medicine grinding device according to claim 5, characterized in that, The mortar and pestle spacer has a hollow structure. The primary and secondary mortars and pestles are equipped with a cooling device on their exterior. The cooling device includes a water inlet pipe connected to a cooling medium, which is either tap water or liquid nitrogen. The lower part of the primary and secondary mortars and pestles is equipped with a water inlet ring pipe connected to a water inlet pipe. Several water inlet branch pipes are provided inside the water inlet ring pipe, and the water inlet branch pipes are connected to the bottom of the mortar and pestle spacer. The upper part of the primary and secondary mortars and pestles is equipped with a return water ring pipe. A return water pipe is connected to the outside of the return water ring pipe, and several return water branch pipes are provided inside the return water ring pipe. One end of the return water branch pipe is connected to the top of the mortar and pestle spacer.

7. The Chinese herbal medicine grinding device according to claim 1, characterized in that, The primary grinding pestle, the secondary grinding pestle, and the bottom of the cylinder are all frustoconical. A scraping mechanism is provided on the upper part of the bottom of the cylinder. The scraping mechanism includes a connecting plate, which is fixedly connected to the rotating shaft. Several scrapers are provided on the outside of the connecting plate, and the scrapers abut against the upper surface of the bottom of the cylinder.

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