Chinese herbal medicine grinding equipment and grinding method

Abstract

The present application provides a Chinese herbal medicine grinding equipment and grinding method, including a grinding box, a feeding roller is provided in the grinding box, and a coarse grinding roller, a medium grinding roller, a fine grinding roller, a coarse grinding surface, a medium grinding surface and a fine grinding surface are provided in the feeding roller; the coarse grinding roller and the coarse grinding surface are provided with a coarse grinding position, the medium grinding roller and the medium grinding surface are provided with a medium grinding position, and the fine grinding position is provided between the fine grinding roller and the fine grinding surface; a feeding port is provided at the top of the grinding box, the feeding port is provided with a feeding pipe connected to the feeding end of the coarse grinding position, the discharging end of the coarse grinding position is arranged corresponding to the feeding end of the medium grinding position, and a discharging port is provided at the bottom of the grinding box; a plurality of baffle plates are evenly provided on the inner wall of the feeding roller, and the sieve hole of the feeding roller is passed through the adjacent two baffle plates; a driving mechanism is provided outside the grinding box for driving the coarse grinding roller, the medium grinding roller, the fine grinding roller and the feeding roller to rotate simultaneously; when the material after being ground by the medium grinding roller still does not meet the particle size requirement, the material is sent to the fine grinding position for a second round of grinding through the baffle plate.

Description

Technical Field

[0001] The present application relates to the field of Chinese herbal medicine preparation, and in particular to a Chinese herbal medicine grinding device and a grinding method. Background Art

[0002] Oral liquid is a common dosage form of medicine. It is based on traditional Chinese medicine decoctions. The active ingredients in the medicine are extracted, appropriate flavoring agents, antibacterial agents and other additives are added, and the product is made into a sterile or semi-sterile oral liquid preparation according to the injection ampoule filling process.

[0003] Traditional Chinese medicine decoctions are prepared from herbal remedies. As a crucial component of traditional medicine, Chinese herbal medicines draw their raw materials from a wide range of natural sources, including plants, animals, and minerals. Botanicals, with their varying medicinal properties, comprise the foundation of TCM's diversity. Animal remedies encompass internal organs, skins, bones, and organs. Mineral remedies are derived from naturally occurring inorganic substances through specialized processing. Because botanicals comprise the majority of TCM, TCM is also known as Chinese herbal medicine.

[0004] Before using these Chinese herbal medicines in preparations, they often require proper processing, and grinding is a crucial step. However, conventional Chinese herbal medicine grinding equipment cannot circulate during the grinding process, resulting in poor grinding results and low grinding efficiency. This can easily cause blockage during screening, shortening the equipment's service life. Summary of the Invention

[0005] In view of the above problems, the present application is proposed to provide a Chinese herbal medicine grinding device and grinding method that overcomes the above problems or at least partially solves the above problems, including:

[0006] A Chinese herbal medicine grinding device comprises a grinding box, wherein a straight cylindrical feed roller is provided in the grinding box, wherein a coarse grinding roller, a medium grinding roller, a fine grinding roller and a grinding shaped body are provided in the feeding roller, and the lateral length of the grinding shaped body is equal to the lateral length of the feeding roller;

[0007] The grinding profile includes a coarse grinding surface corresponding to the coarse grinding roller, a medium grinding surface corresponding to the medium grinding roller, and a fine grinding surface corresponding to the fine grinding roller; the outer walls of the coarse grinding roller, the medium grinding roller, the fine grinding roller, the coarse grinding surface, the medium grinding surface, and the fine grinding surface are all provided with grinding teeth; the coarse grinding position is between the coarse grinding roller and the coarse grinding surface, the medium grinding position is between the medium grinding roller and the medium grinding surface, and the fine grinding position is between the fine grinding roller and the fine grinding surface; wherein the coarse grinding surface is arranged to be inclined downward toward the medium grinding position;

[0008] An inlet is provided at the end of the grinding box. A feeding pipe communicating with the feeding end of the coarse grinding position is provided at the inlet. The feeding pipe is in contact with the coarse grinding position. The discharging end of the coarse grinding position is correspondingly arranged with the feeding end of the medium grinding position. An outlet is provided at the bottom of the grinding box. The discharging end of the fine grinding position corresponds to the outlet.

[0009] A number of inclined baffle plates are evenly arranged on the inner wall of the feeding roller. Screening holes penetrating the feeding roller are provided between two adjacent baffle plates. A driving mechanism for simultaneously driving the coarse grinding roller, the medium grinding roller, the fine grinding roller and the feeding roller to rotate is provided outside the grinding box. Among them, the rotation directions of the coarse grinding roller and the medium grinding roller are the same and opposite to the rotation direction of the fine grinding roller. The rotation directions of the fine grinding roller and the feeding roller are the same.

[0010] When the material after being ground by the medium grinding roller still does not meet the particle size requirement, the driving mechanism drives the feeding roller, and the material is sent to the fine grinding position for secondary grinding through the baffle plates in the feeding roller.

[0011] Preferably, the coarse grinding surface, the medium grinding surface and the fine grinding surface are connected as a whole. The coarse grinding surface is arranged on the top of the medium grinding surface and the fine grinding surface. The medium grinding surface is arranged on one side of the coarse grinding surface. The fine grinding surface is arranged on the other side of the coarse grinding surface. Among them, the side end of the coarse grinding surface close to the fine grinding surface does not exceed the axis center of the fine grinding roller.

[0012] Preferably, the inner wall spacing lengths of the coarse grinding roller, the medium grinding roller, the fine grinding roller and the feeding roller are all greater than the length of the baffle plate.

[0013] Preferably, the baffle plate is inclined in the rotation direction of the feeding roller.

[0014] Preferably, the coarse grinding roller, the medium grinding roller and the fine grinding roller are distributed in a "pin" shape, and the coarse grinding roller is arranged on the top of the medium grinding roller and the fine grinding roller.

[0015] Preferably, the parts of the outer walls of the coarse grinding roller, the medium grinding roller, the fine grinding roller, the coarse grinding surface, the medium grinding surface and the fine grinding surface without grinding teeth are smoothly arranged.

[0016] Preferably, the driving mechanism includes a driving motor, a driving wheel, a first transmission wheel, a second transmission wheel, a third transmission wheel and a fourth transmission wheel.

[0017] The first transmission wheel is coaxially arranged with the coarse grinding roller. The second transmission wheel is coaxially arranged with the medium grinding roller. The fourth transmission wheel is coaxially arranged with the fine grinding roller.

[0018] The power output end of the drive motor is transmission-connected to the driving wheel, the driving wheel is meshed with the first transmission wheel, the first transmission wheel is transmission-connected to the second transmission wheel, the driving wheel is meshed with the third transmission wheel, and the third transmission wheel is meshed with the fourth transmission wheel.

[0019] Preferably, the driving mechanism further includes a fifth transmission wheel, a sixth transmission wheel and a seventh transmission wheel;

[0020] The fifth transmission wheel is arranged on the outer side of the feeding roller, the fifth transmission wheel is engaged with the sixth transmission wheel, the seventh transmission wheel is transmission-connected with the first transmission wheel, and the seventh transmission wheel is coaxially arranged with the sixth transmission wheel.

[0021] Preferably, the gap of the coarse grinding position is larger than the gap of the medium grinding position, and the gap of the medium grinding position is larger than the gap of the fine grinding position.

[0022] A method for grinding Chinese herbal medicines, applied to the above-mentioned Chinese herbal medicine grinding equipment, comprises the following steps:

[0023] The feed roller, the coarse grinding roller, the medium grinding roller and the fine grinding roller are driven to rotate by a driving mechanism;

[0024] The material passes through the feeding pipe from the feeding port to the coarse grinding position, and is ground for the first time by the coarse grinding roller;

[0025] The material goes from the discharge end of the coarse grinding position to the medium grinding position, and is subjected to a second grinding by the medium grinding roller. Under the action of gravity, the material with the required particle size falls into the discharge port from the sieve hole of the feed roller, while the material with the particle size that does not meet the requirement is fed into the fine grinding position through the feed plate of the feed roller.

[0026] The materials that do not meet the particle size requirements are ground for a third time by fine grinding rollers until all the remaining materials meet the particle size requirements and are screened out through the sieve holes.

[0027] This application has the following advantages:

[0028] In the embodiments of the present application, compared with the prior art that "grinding cannot be circulated during the grinding process, the grinding effect is poor, the grinding efficiency is low, and it is easy to cause blockage during screening, which affects the service life of the equipment", the present application provides a solution for multi-layer grinding with three grinding positions, specifically: comprising a grinding box, wherein a straight cylindrical feed roller is provided in the grinding box, wherein a coarse grinding roller, a medium grinding roller, a fine grinding roller and a grinding shaped body are provided in the feed roller, and the transverse length of the grinding shaped body is equal to the transverse length of the feed roller; the grinding shaped body comprises a coarse grinding surface corresponding to the coarse grinding roller, a medium grinding surface corresponding to the medium grinding roller and a fine grinding surface corresponding to the fine grinding roller; the outer walls of the coarse grinding roller, the medium grinding roller, the fine grinding roller, the coarse grinding surface, the medium grinding surface and the fine grinding surface are all provided with grinding teeth; the coarse grinding position is between the coarse grinding roller and the coarse grinding surface, the medium grinding position is between the medium grinding roller and the medium grinding surface, and the fine grinding position is between the fine grinding roller and the fine grinding surface; wherein, the coarse grinding position is between the coarse grinding roller and the coarse grinding surface, the medium grinding position is between the medium grinding roller and the medium grinding surface, and the fine grinding position is between the fine grinding roller and the fine grinding surface. The grinding surface is tilted downward toward the middle grinding position; an inlet is provided at the end of the grinding box, and a feed pipe is provided at the inlet that is connected to the feed end of the coarse grinding position, and the feed pipe is in contact with the coarse grinding surface, and the discharge end of the coarse grinding position is corresponding to the feed end of the middle grinding position; a discharge port is provided at the bottom of the grinding box, and the discharge end of the fine grinding position corresponds to the discharge port; a plurality of baffles are evenly provided on the inner wall of the feed roller, and a sieve hole that passes through the feed roller is provided between two adjacent baffles; the outside of the grinding box A drive mechanism is provided for driving the coarse grinding roller, the intermediate grinding roller, the fine grinding roller, and the feed roller to rotate simultaneously; wherein the coarse grinding roller and the intermediate grinding roller rotate in the same direction and opposite to the direction of rotation of the fine grinding roller, and the fine grinding roller rotates in the same direction as the feed roller; when the material after being ground by the intermediate grinding roller still does not meet the particle size requirements, the drive mechanism drives the feed roller, and the baffle plate on the feed roller sends the material to the fine grinding position for two rounds of grinding. Compared with the existing technology, the present invention has the following beneficial effects:

[0029] 1. The material is ground for the first round by the coarse grinding roller and the medium grinding roller. After the first round of grinding, the material that meets the particle size requirements can fall into the discharge port through the sieve hole of the feed roller by gravity. This equipment can screen out the material that meets the requirements in time to avoid sieve material blockage and over-grinding of the material, providing grinding space for subsequent materials.

[0030] 2. For materials with larger particle size that cannot be screened out in the first round of grinding, the material can be sent to the fine grinding position again through the feeding plate of the feeding roller for further grinding until all the remaining materials meet the particle size requirements and are all screened out. The Chinese herbal medicine materials can be ground to the required particle size and screened out in an orderly and effective manner. Multi-layer grinding can achieve better grinding effects.

[0031] 3. The coarse grinding position corresponds to the medium grinding position, the discharge end of the medium grinding position corresponds to the discharge port, and the discharge end of the fine grinding position corresponds to the discharge port. The three grinding positions are arranged in a ring shape around the straight cylindrical feed roller to reduce the volume of the equipment.

[0032] 4. The materials that meet the particle size requirements are automatically screened out by gravity, and the materials transported by the feed roller are automatically dropped into the fine grinding position for secondary grinding by gravity. The above functions are achieved by gravity, making the equipment more energy-efficient and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the description of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 This is a front view of a Chinese herbal medicine grinding device provided in one embodiment of the present application;

[0035] Figure 2 This is a perspective view of a Chinese herbal medicine grinding device provided in one embodiment of the present application;

[0036] Figure 3 This is a schematic structural diagram of a driving mechanism provided in one embodiment of the present application;

[0037] Figure 4 This is a flow chart of the steps of a Chinese herbal medicine grinding method provided in one embodiment of the present application.

[0038] The reference numerals in the drawings of the specification are as follows:

[0039] 1. Grinding box; 2. Feed roller; 3. Coarse grinding roller; 4. Medium grinding roller; 5. Fine grinding roller; 6. Coarse grinding surface; 7. Medium grinding surface; 8. Fine grinding surface; 9. Feed port; 10. Baffle plate; 11. Sieve hole; 12. Discharge port; 21. Drive motor; 22. Driving wheel; 23. First transmission wheel; 24. Second transmission wheel; 25. Third transmission wheel; 26. Fourth transmission wheel; 27. Fifth transmission wheel; 28. Sixth transmission wheel; 29. ​​Seventh transmission wheel. DETAILED DESCRIPTION

[0040] To make the objectives, features, and advantages of this application more readily apparent, the present application is further described below in conjunction with the accompanying drawings and specific embodiments. It is apparent that the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in this application without inventive effort are also within the scope of protection of this application.

[0041] By analyzing the existing technology, the inventors found that the existing Chinese herbal medicine grinding equipment lacks a cyclic grinding mechanism, resulting in insufficient grinding and uneven degree of crushing of the medicinal materials. In addition, due to the uneven distribution of particle size after grinding, clogging is very likely to occur during the screening process, affecting production efficiency. However, in the existing grinding equipment equipped with a cyclic grinding mechanism, some materials that have reached the required particle size cannot be discharged in time during the grinding process, but continue to be ground unnecessarily as the grinding disc rotates. This not only leads to a decrease in production efficiency, but excessive grinding also destroys the bioavailability of the material. Continuously retained materials may also cause clogging and wear problems in the grinding equipment. Fine powder accumulates in the grinding chamber, which may clog the screen or affect the normal operation of the grinding components, resulting in a decrease in equipment performance and an increase in maintenance costs. At the same time, long-term high-load operation will also accelerate the wear of the grinding components and shorten the service life of the equipment.

[0042] Reference Figure 1 and Figure 2 , shows a Chinese herbal medicine grinding device provided by an embodiment of the present application, comprising a grinding box 1, wherein a straight cylindrical feed roller 2 is provided in the grinding box 1, wherein a coarse grinding roller 3, a medium grinding roller 4, a fine grinding roller 5 and a grinding shaped body are provided in the feed roller 2, and the lateral length of the grinding shaped body is equal to the lateral length of the feed roller 2;

[0043] The grinding profile includes a coarse grinding surface 6 corresponding to the coarse grinding roller 3, a medium grinding surface 7 corresponding to the medium grinding roller 4, and a fine grinding surface 8 corresponding to the fine grinding roller 5; the outer walls of the coarse grinding roller 3, the medium grinding roller 4, the fine grinding roller 5, the coarse grinding surface 6, the medium grinding surface 7, and the fine grinding surface 8 are all provided with grinding teeth; the coarse grinding position is between the coarse grinding roller 3 and the coarse grinding surface 6, the medium grinding position is between the medium grinding roller 4 and the medium grinding surface 7, and the fine grinding position is between the fine grinding roller 5 and the fine grinding surface 8; wherein the coarse grinding surface 6 is arranged to be inclined downward toward the medium grinding position;

[0044] The end of the grinding box 1 is provided with an inlet 9, and the inlet 9 is provided with a feed pipe connected to the feed end of the coarse grinding position, and the feed pipe abuts against the coarse grinding surface 6. The discharge end of the coarse grinding position is corresponding to the feed end of the medium grinding position. The bottom of the grinding box 1 is provided with a discharge port 12, and the discharge end of the fine grinding position corresponds to the discharge port 12;

[0045] The inner wall of the feed roller 2 is evenly provided with a plurality of baffles 10, and a sieve hole 11 penetrating the feed roller 2 is provided between two adjacent baffles 10; the outside of the grinding box 1 is provided with a driving mechanism for driving the coarse grinding roller 3, the medium grinding roller 4, the fine grinding roller 5 and the feed roller 2 to rotate simultaneously; wherein the coarse grinding roller 3 and the medium grinding roller 4 rotate in the same direction and in the opposite direction to the fine grinding roller 5, and the fine grinding roller 5 rotates in the same direction as the feed roller 2;

[0046] When the material after being ground by the middle grinding roller 4 still does not meet the particle size requirement, the driving mechanism drives the feed roller 2, and the baffle plate 10 in the feed roller 2 sends the material to the fine grinding position for second round grinding.

[0047] In the embodiments of the present application, compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. The material is ground for the first round by the coarse grinding roller 3 and the medium grinding roller 4. After the first round of grinding, the material that meets the particle size requirements can fall into the discharge port 12 from the sieve hole 11 of the feed roller 2 by gravity. This equipment can screen out the material that meets the requirements in time to avoid sieve material blockage and over-grinding of the material, providing grinding space for subsequent materials.

[0049] 2. For materials with larger particle size that cannot be screened out in the first round of grinding, the material can be sent to the fine grinding position again through the feeding plate of the feeding roller 2 for further grinding until all the remaining materials meet the particle size requirements and are all screened out. The Chinese herbal medicine materials can be ground to the required particle size and screened out in an orderly and effective manner. Multi-layer grinding can achieve better grinding effects.

[0050] 3. The coarse grinding position corresponds to the medium grinding position, the discharge end of the medium grinding position corresponds to the discharge port 12, and the discharge end of the fine grinding position corresponds to the discharge port 12. The three grinding positions are arranged in a ring around the straight cylindrical feed roller 2 to reduce the volume of the equipment.

[0051] 4. The materials that meet the particle size requirements are automatically screened out by gravity, and the materials transported by the feed roller 2 are automatically dropped into the fine grinding position for secondary grinding by gravity. The above functions are achieved by gravity, making the equipment more energy-efficient and reducing costs.

[0052] Next, a Chinese herbal medicine grinding device in this exemplary embodiment will be further described.

[0053] It should be noted that the feed roller 2 is a hollow ring, and the feed roller 2, the coarse grinding roller 3, the medium grinding roller 4 and the fine grinding roller 5 are shafts. Figure 2 A and B shown are bearings, and the driving mechanism is provided in part B. The feed pipe abuts against the coarse grinding surface 6, and the feed roller 2 falls to the fine grinding position when conveying the material.

[0054] As an example, the rotation speeds of the feed roller 2 and the coarse grinding roller 3 are lower than the rotation speeds of the medium grinding roller 4 and the fine grinding roller 5. This prevents the feed roller 2 and the coarse grinding roller 3 from rotating too fast, causing the material to fly out due to centripetal force.

[0055] In one embodiment of the present application, the coarse grinding surface 6, the intermediate grinding surface 7 and the fine grinding surface 8 are connected into a whole, the coarse grinding surface 6 is arranged on the top of the intermediate grinding surface 7 and the fine grinding surface 8, the intermediate grinding surface 4 is arranged on one side of the coarse grinding surface 3, and the fine grinding surface 5 is arranged on the other side of the coarse grinding surface 6.

[0056] It should be noted that the intermediate grinding surface 7 and the fine grinding surface 8 are spaced apart on either side of the coarse grinding surface 6. The spacing between the coarse grinding surface 6, the intermediate grinding surface 7, and the fine grinding surface 8 and their corresponding grinding rollers directly determines the achievable particle size at their respective grinding positions. When the three grinding surfaces are integrated, the particle size of the material can be adjusted by simply adjusting the position of the corresponding grinding rollers.

[0057] In one embodiment, the coarse grinding surface 6 is tilted downward toward the middle grinding position to facilitate the coarsely ground Chinese herbal medicine material to automatically fall into the middle grinding position. The fine grinding surface 8 is located on the higher side of the coarse grinding surface 6, and the middle grinding surface 7 is located on the lower side of the coarse grinding surface 6. The side of the coarse grinding surface 6 close to the fine grinding surface 8 does not exceed the axis of the fine grinding roller 5. The purpose is to allow the material to fall into the fine grinding position during the two-wheel grinding.

[0058] In one embodiment of the present application, the length of the interval between the coarse grinding roller 3 , the medium grinding roller 4 , and the fine grinding roller 5 and the inner wall of the feed roller 2 is greater than the length of the baffle plate 10 .

[0059] It should be noted that, through the above arrangement, the baffle plate 10 does not contact the three grinding rollers, thereby avoiding interference during grinding.

[0060] In one embodiment of the present application, the baffle plate 10 is inclined toward the rotation direction of the feed roller 2 .

[0061] It should be noted that the baffle 10 is inclined so that the material on the feeding roller 2 can fall by gravity when it rotates to the fine grinding position.

[0062] In a specific implementation, the rotation direction of the feeding roller 2 is the same as that of the fine grinding roller 5. When the fine grinding roller 5 is on the left side of the grinding box 1, both the fine grinding roller 5 and the feeding roller 2 rotate clockwise. When the baffle 10 transports part of the Chinese herbal medicine material above the fine grinding roller 5, the baffle 10 is inverted. Under the action of gravity, this part of the material can directly fall on the fine grinding roller 5 and / or the fine grinding position, and the material falling on the fine grinding roller 5 can be carried to the fine grinding position by its own rotation.

[0063] In an embodiment of the present application, the coarse grinding roller 3, the medium grinding roller 4 and the fine grinding roller 5 are distributed in a "pin" shape, and the coarse grinding roller 3 is arranged on the top of the medium grinding roller 4 and the fine grinding roller 5.

[0064] It should be noted that the medium grinding position承接 the coarse grinding position, the discharge end of the medium grinding position can directly correspond to the discharge port 12 of the grinding box 1, and the material meeting the particle size requirements can be directly screened out through the sieve holes 11. The discharge end of the fine grinding position also corresponds to the discharge port 12 of the grinding box 1. The three grinding positions are distributed in a "pin" shape around the straight cylindrical feeding roller. This arrangement can not only effectively perform multi-layer grinding on Chinese herbal medicine materials, but also reduce the equipment volume.

[0065] In an embodiment of the present application, the parts of the outer walls of the coarse grinding roller 3, the medium grinding roller 4, the fine grinding roller 5, the coarse grinding surface 6, the medium grinding surface 7 and the fine grinding surface 8 without grinding teeth are smoothly arranged.

[0066] It should be noted that each grinding position can adapt the corresponding grinding tooth specifications at the appropriate positions on the outer walls of the grinding roller and the grinding surface according to the required particle size requirements, and the remaining outer walls without adapted grinding teeth are smoothly arranged so that the material can slide to the corresponding grinding position.

[0067] As an example, the outer walls of the coarse grinding roller 3 and the coarse grinding surface 6 are both provided with coarse grinding teeth, the outer walls of the medium grinding roller 4 and the medium grinding surface 7 are both provided with medium grinding teeth, and the outer walls of the fine grinding roller 5 and the fine grinding surface 8 are both provided with fine grinding teeth.

[0068] Refer to Figure 3 , in an embodiment of the present application, the drive mechanism includes a drive motor 21, a driving wheel 22, a first transmission wheel 23, a second transmission wheel 24, a third transmission wheel 25 and a fourth transmission wheel 26;

[0069] The first transmission wheel 23 is coaxially arranged with the coarse grinding roller 3, the second transmission wheel 24 is coaxially arranged with the medium grinding roller 4, and the fourth transmission wheel 26 is coaxially arranged with the fine grinding roller 5;

[0070] The power output end of the drive motor 21 is transmission-connected to the driving wheel 22, the driving wheel 22 is meshed with the first transmission wheel 23, the first transmission wheel 23 is transmission-connected to the second transmission wheel 24, the driving wheel 22 is meshed with the third transmission wheel 25, and the third transmission wheel 25 is meshed with the fourth transmission wheel 26.

[0071] It should be noted that both the driving wheel 22 and the third transmission wheel 25 are equipped with gears. When the drive motor 21 is driven, the drive motor 21 drives the driving wheel 22, and the drive motor 21 and the driving wheel 22 rotate in the same direction. The driving wheel 22 meshes with the first transmission wheel 23 and the third transmission wheel 25, respectively. The first transmission wheel 23 and the third transmission wheel 25 rotate in opposite directions to the driving wheel 22. The second transmission wheel 24 rotates in the same direction as the first transmission wheel 23, while the fourth transmission wheel 26 rotates in the opposite direction to the third transmission wheel 25. The drive mechanism drives the coarse grinding roller 3 and the medium grinding roller 4 to rotate in the same direction, while driving the fine grinding roller 5 to rotate in the opposite direction to the other two grinding rollers.

[0072] Reference Figure 2 In one embodiment of the present application, the driving mechanism further includes a fifth transmission wheel 27, a sixth transmission wheel 28 and a seventh transmission wheel 29;

[0073] The fifth transmission wheel 27 is arranged on the outer side of the feeding roller 2, and the fifth transmission wheel 27 is engaged with the sixth transmission wheel 28. The seventh transmission wheel 29 is transmission-connected to the first transmission wheel 23, and the seventh transmission wheel 29 and the sixth transmission wheel 28 are coaxially arranged.

[0074] As an example, the driving wheel 22, the third transmission wheel 25, the fourth transmission wheel 26, the fifth transmission wheel 27, and the sixth transmission wheel 28 are all equipped with gears. The seventh transmission wheel 29 rotates in the same direction as the first transmission wheel 23, the sixth transmission wheel 28 rotates in the same direction as the seventh transmission wheel 29, and the sixth transmission wheel 28 rotates in the opposite direction to the fifth transmission wheel 27.

[0075] In a specific implementation, when the fine grinding roller 5 is on the left side of the grinding box 1, the fine grinding roller 5 and the feed roller 2 both rotate clockwise, and the coarse grinding roller and the medium grinding roller both rotate counterclockwise.

[0076] In one embodiment of the present application, the gap of the coarse grinding position is larger than the gap of the medium grinding position, and the gap of the medium grinding position is larger than the gap of the fine grinding position. By setting different gaps for each grinding position, multi-layer grinding can be achieved.

[0077] Reference Figure 4 , shows a Chinese herbal medicine grinding method provided by an embodiment of the present application, which is applied to the above-mentioned Chinese herbal medicine grinding equipment;

[0078] The method comprises:

[0079] S410, driving the feed roller 2, the coarse grinding roller 3, the intermediate grinding roller 4, and the fine grinding roller 5 to rotate via a driving mechanism; wherein the feed roller 2 and the fine grinding roller 5 rotate in the same direction, the coarse grinding roller 3 and the intermediate grinding roller 4 rotate in the same direction, and the coarse grinding roller 3 rotates in the opposite direction to the feed roller 2;

[0080] S420, the material is fed from the feed port 9 through the feed pipe to the coarse grinding position, and the material is ground for the first time by the coarse grinding roller 3;

[0081] S430: The material is delivered from the discharge end of the coarse grinding station to the intermediate grinding station, where it is subjected to a second grinding by the intermediate grinding roller 4. Under the action of gravity, the material with the required particle size falls from the sieve hole 11 of the feed roller 2 into the discharge port 12, while the material with the particle size that does not meet the requirement is fed to the fine grinding station via the feed plate of the feed roller 2.

[0082] S440 , the materials whose particle size does not meet the requirement are ground for a third time by the fine grinding roller 5 until all the remaining materials meet the particle size requirement and are screened out through the sieve holes 11 .

[0083] When in use, turn on the drive motor 21, first put the Chinese herbal medicine material into the feed port 9, the material reaches the coarse grinding position through the feed pipe, the coarse grinding roller 3 rotates to grind the material for the first time, and then the material falls from the discharge end of the coarse grinding position to the medium grinding position, and the medium grinding roller 4 rotates to grind the material for the second time. After the second grinding is completed, the material falls to the bottom of the feed roller 2, and the material that meets the particle size requirements is sieved out from the sieve hole 11.

[0084] For materials with larger particle size that cannot be screened out in the first round of grinding, as the feed roller 2 rotates, the baffle plate 10 therein transports this part of the material to the top of the fine grinding roller 5, and the baffle plate 10 is hung upside down. Under the action of gravity, this part of the material falls directly on the fine grinding roller 5 and / or the fine grinding position. The material that falls on the fine grinding roller 5 can be brought to the fine grinding position for the third grinding through its own rotation, until all the remaining materials meet the particle size requirements and are all screened out from the sieve hole 11.

[0085] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0086] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0087] The above is a detailed introduction to the Chinese herbal medicine grinding equipment and grinding method provided by this application. Specific examples are used in this article to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method of this application and its core idea; at the same time, for general technical personnel in this field, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on this application.

Claims

1. A Chinese herbal medicine grinding device, characterized in that: It includes a grinding box, in which there is a straight cylindrical feeding roller. Inside the feeding roller, there are a coarse grinding roller, a medium grinding roller, a fine grinding roller and a grinding special-shaped body. The transverse length of the grinding special-shaped body is equal to the transverse length of the feeding roller; The grinding special-shaped body includes a coarse grinding surface corresponding to the coarse grinding roller, a medium grinding surface corresponding to the medium grinding roller, and a fine grinding surface corresponding to the fine grinding roller; The outer walls of the coarse grinding roller, the medium grinding roller, the fine grinding roller, the coarse grinding surface, the medium grinding surface and the fine grinding surface are all provided with grinding teeth. The space between the coarse grinding roller and the coarse grinding surface is the coarse grinding position, the space between the medium grinding roller and the medium grinding surface is the medium grinding position, and the space between the fine grinding roller and the fine grinding surface is the fine grinding position. Among them, the coarse grinding surface is inclined downward towards the medium grinding position; An inlet is provided at the end of the grinding box. The inlet is provided with a feeding pipe communicating with the feeding end of the coarse grinding position. The feeding pipe abuts against the coarse grinding surface. The discharging end of the coarse grinding position is correspondingly arranged with the feeding end of the medium grinding position. An outlet is provided at the bottom of the grinding box. The discharging end of the fine grinding position is correspondingly arranged with the outlet; A number of inclined baffle plates are evenly arranged on the inner wall of the feeding roller. There are sieve holes penetrating through the feeding roller between two adjacent baffle plates. A driving mechanism is provided outside the grinding box for driving the coarse grinding roller, the medium grinding roller, the fine grinding roller and the feeding roller to rotate simultaneously. Among them, the rotation directions of the coarse grinding roller and the medium grinding roller are the same and opposite to the rotation direction of the fine grinding roller. The rotation direction of the fine grinding roller is the same as that of the feeding roller; When the material still does not meet the particle size requirement after being ground by the medium grinding roller, the driving mechanism drives the feeding roller, and the material is sent to the fine grinding position for secondary grinding through the baffle plates in the feeding roller.

2. The Chinese herbal medicine grinding equipment according to claim 1, characterized in that: The coarse grinding surface, the medium grinding surface and the fine grinding surface are connected into a whole. The coarse grinding surface is arranged on the top of the medium grinding surface and the fine grinding surface. The medium grinding surface is arranged on one side of the coarse grinding surface, and the fine grinding surface is arranged on the other side of the coarse grinding surface. Among them, the side end of the coarse grinding surface close to the fine grinding surface does not exceed the axis of the fine grinding roller.

3. The Chinese herbal medicine grinding equipment according to claim 1, characterized in that: The interval lengths between the coarse grinding roller, the medium grinding roller and the fine grinding roller and the inner wall of the feeding roller are all greater than the length of the baffle plate.

4. The Chinese herbal medicine grinding equipment according to claim 1, characterized in that: The baffle plate is inclined towards the rotation direction of the feeding roller.

5. The Chinese herbal medicine grinding equipment according to claim 1, characterized in that: The coarse grinding roller, the medium grinding roller and the fine grinding roller are distributed in a "pin" shape, and the coarse grinding roller is arranged on the top of the medium grinding roller and the fine grinding roller.

6. The Chinese herbal medicine grinding equipment according to claim 1, characterized in that: The parts of the outer walls of the coarse grinding roller, the medium grinding roller, the fine grinding roller, the coarse grinding surface, the medium grinding surface and the fine grinding surface without grinding teeth are smoothly arranged.

7. The Chinese herbal medicine grinding equipment according to claim 1, characterized in that: The driving mechanism includes a driving motor, a driving wheel, a first transmission wheel, a second transmission wheel, a third transmission wheel and a fourth transmission wheel; The first transmission wheel is coaxially arranged with the coarse grinding roller, the second transmission wheel is coaxially arranged with the medium grinding roller, and the fourth transmission wheel is coaxially arranged with the fine grinding roller; The power output end of the drive motor is transmission-connected to the driving wheel, the driving wheel is meshed with the first transmission wheel, the first transmission wheel is transmission-connected to the second transmission wheel, the driving wheel is meshed with the third transmission wheel, and the third transmission wheel is meshed with the fourth transmission wheel.

8. The Chinese herbal medicine grinding equipment according to claim 7, characterized in that: The driving mechanism further includes a fifth transmission wheel, a sixth transmission wheel and a seventh transmission wheel; The fifth transmission wheel is arranged on the outer side of the feeding roller, the fifth transmission wheel is engaged with the sixth transmission wheel, the seventh transmission wheel is transmission-connected with the first transmission wheel, and the seventh transmission wheel is coaxially arranged with the sixth transmission wheel.

9. The Chinese herbal medicine grinding equipment according to claim 1, characterized in that: The gap of the coarse grinding position is larger than the gap of the medium grinding position, and the gap of the medium grinding position is larger than the gap of the fine grinding position.

10. A method for grinding Chinese herbal medicines, applied to the Chinese herbal medicine grinding equipment according to any one of claims 1 to 9, characterized in that: Including steps: The feed roller, the coarse grinding roller, the medium grinding roller and the fine grinding roller are driven to rotate by a driving mechanism; The material passes through the feeding pipe from the feeding port to the coarse grinding position, and is ground for the first time by the coarse grinding roller; The material goes from the discharge end of the coarse grinding position to the medium grinding position, and is subjected to a second grinding by the medium grinding roller. Under the action of gravity, the material with the required particle size falls into the discharge port from the sieve hole of the feed roller, while the material with the particle size that does not meet the requirement is fed into the fine grinding position through the feed plate of the feed roller. The materials that do not meet the particle size requirements are ground for a third time by fine grinding rollers until all the remaining materials meet the particle size requirements and are screened out through the sieve holes.

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