Chinese herbal medicine grinding equipment and grinding method

Abstract

The invention provides Chinese herbal medicine grinding equipment and a grinding method. The Chinese herbal medicine grinding equipment comprises a grinding box, a feeding roller is arranged in the grinding box, and a rough grinding roller, a middle grinding roller, a fine grinding roller, a rough grinding face, a middle grinding face and a fine grinding face are arranged in the feeding roller; a rough grinding position is formed between the rough grinding roller and the rough grinding surface, a middle grinding position is formed between the middle grinding roller and the middle grinding surface, and a fine grinding position is formed between the fine grinding roller and the fine grinding surface; a feeding port is formed in the top of the grinding box and provided with a feeding pipe communicated with the feeding end of the rough grinding position, the discharging end of the rough grinding position corresponds to the feeding end of the middle grinding position, and a discharging port is formed in the bottom of the grinding box. A plurality of striker plates are uniformly arranged on the inner wall of the feeding roller, and sieve holes of the feeding roller penetrate through the space between every two adjacent striker plates; a driving mechanism for driving the rough grinding roller, the middle grinding roller, the fine grinding roller and the feeding roller to rotate simultaneously is arranged outside the grinding box; and when the material ground by the middle grinding roller still does not meet the granularity requirement, the material is conveyed to a fine grinding position through the material baffle plate for two-wheel grinding.

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 decoction, extracts the active ingredients in the medicine, adds appropriate flavoring agents, antibacterial agents and other additives, and follows the injection ampoule filling process to make a sterile or semi-sterile oral liquid preparation.

[0003] Chinese herbal medicine decoctions are prepared from Chinese herbal medicines. As an important part of traditional medicine, Chinese herbal medicines are widely sourced from plants, animals and minerals in nature. In terms of herbal medicines, the roots, stems, leaves, fruits and other parts of the herbal medicines have different medicinal properties, forming the basis of the diversity of Chinese medicines. Animal medicines cover internal organs, skins, bones, organs, etc., while mineral medicines are formed after specific processing of inorganic substances in nature. Because herbal medicines account for the majority of Chinese medicines, Chinese medicines are also called Chinese herbal medicines.

[0004] Before using these Chinese herbal medicines for preparation, they often need to be properly processed, and grinding is a crucial step. However, ordinary Chinese herbal medicine grinding devices cannot circulate during the grinding process, resulting in poor grinding effects and low grinding efficiency, which can easily cause blockage during screening and shorten the service life of the equipment. 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 feeding roller is arranged in the grinding box, wherein a coarse grinding roller, a medium grinding roller, a fine grinding roller and a grinding shaped body are arranged 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 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 surface is arranged to be inclined downward toward the medium grinding position;

[0008] The end of the grinding box is provided with a feed inlet, the feed inlet is provided with a feed pipe connected with the feed end of the coarse grinding position, the feed pipe abuts against the coarse grinding surface, the discharge end of the coarse grinding position is arranged corresponding to the feed end of the medium grinding position, the bottom of the grinding box is provided with a discharge port, and the discharge end of the fine grinding position corresponds to the discharge port;

[0009] The inner wall of the feed roller is evenly provided with a plurality of obliquely arranged baffle plates, and a sieve hole penetrating the feed roller is provided between two adjacent baffle plates; the outside of the grinding box is provided with a driving mechanism for driving the coarse grinding roller, the medium grinding roller, the fine grinding roller and the feed roller to rotate simultaneously; wherein the coarse grinding roller and the medium grinding roller have the same rotation direction and are opposite to the rotation direction of the fine grinding roller, and the fine grinding roller has the same rotation direction as the feed roller;

[0010] When the material after being ground by the middle grinding roller still does not meet the particle size requirement, the driving mechanism drives the feeding roller to send the material to the fine grinding position for second round grinding through the baffle plate of the feeding roller.

[0011] Preferably, the coarse grinding surface, the middle grinding surface and the fine grinding surface are connected as a whole, the coarse grinding surface is arranged on the top of the middle grinding surface and the fine grinding surface, the middle 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; wherein the side end of the coarse grinding surface close to the fine grinding surface does not exceed the axis of the fine grinding roller.

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

[0013] Preferably, the baffle plate is arranged to be inclined toward the rotation direction of the feed roller.

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

[0015] Preferably, 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 where the grinding teeth are not provided are arranged smoothly.

[0016] Preferably, the driving mechanism comprises 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, and the fourth transmission wheel is coaxially arranged with the fine grinding roller;

[0018] The power output end of the driving 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 comprises 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 meshed 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 Chinese herbal medicine grinding method, applied to the above-mentioned Chinese herbal medicine grinding device, comprises the steps of:

[0023] The feeding 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 the 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 feeding roller, and the material with the particle size that does not meet the requirement is fed into the fine grinding position through the feeding plate of the feeding roller.

[0026] The materials that do not meet the particle size requirements are ground for the 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 "circular grinding cannot be performed during the grinding process, the grinding effect is poor, the grinding efficiency is low, and it is easy to cause blockage during screening, affecting 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 feeding 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; 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 roller is provided with a coarse grinding position, the coarse 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 arranged to be inclined downward toward the middle grinding position; an inlet is arranged at the end of the grinding box, and a feed pipe is arranged at the inlet to be connected with the feed end of the coarse grinding position, and the feed pipe abuts against the coarse grinding surface, and the discharge end of the coarse grinding position is arranged corresponding to the feed end of the middle grinding position; a discharge port is arranged at the bottom of the grinding box, and the discharge end of the fine grinding position corresponds to the discharge port; a plurality of baffle plates are evenly arranged on the inner wall of the feed roller, and a sieve hole penetrating the feed roller is arranged between two adjacent baffle plates; the outside of the grinding box A driving mechanism is provided for driving the coarse grinding roller, the medium grinding roller, the fine grinding roller and the feed roller to rotate simultaneously; wherein the coarse grinding roller and the medium grinding roller rotate in the same direction and opposite to the fine grinding roller, and the fine grinding roller rotates in the same direction as the feed roller; when the material after grinding by the medium grinding roller still does not meet the particle size requirement, the driving mechanism drives the feed roller, and the baffle plate in the feed roller sends the material to the fine grinding position for two rounds of grinding. Compared with the prior art, 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 clogging of the screen material, and can also avoid over-grinding of the material, providing grinding space for subsequent materials.

[0030] 2. For materials with larger particle sizes 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 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 second round grinding by gravity. The above functions are realized 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 use in 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 paying any creative work.

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

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

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

[0037] Figure 4 This is a step flow chart of a method for grinding Chinese herbal medicine 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. Feeding 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 inlet; 10. Baffle plate; 11. Sieve hole; 12. Discharge port; 21. Driving 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] In order to make the objects, features and advantages of the present application more obvious and understandable, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0041] The inventors have found through analysis of the prior art that the existing Chinese herbal medicine grinding equipment lacks a cyclic grinding mechanism, resulting in insufficient grinding, uneven degree of crushing of the medicinal materials, and due to the uneven distribution of the particle size after grinding, blockage is very likely to occur during the screening process, affecting production efficiency. However, in the existing grinding equipment 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, which not only leads to a decrease in production efficiency, but also excessive grinding will destroy the bioavailability of the material. Continuously retained materials may also cause blockage and wear problems in the grinding equipment. Fine powder accumulates in the grinding chamber, which may block the screen or affect the normal operation of the grinding parts, 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 parts 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 feeding 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 feeding roller 2, and the lateral length of the grinding shaped body is equal to the lateral length of the feeding 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 a feed port 9, and the feed port 9 is provided with a feed pipe connected with 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 arranged 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 baffle plates 10, and a sieve hole 11 penetrating the feed roller 2 is provided between two adjacent baffle plates 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 feeding roller 2, and the baffle plate 10 in the feeding 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. The equipment can screen out the material that meets the requirements in time to avoid clogging of the screen material, and can also avoid over-grinding of the material, providing grinding space for subsequent materials.

[0049] 2. For materials with larger particle sizes 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 feeding 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 second round grinding by gravity. The above functions are realized 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 rough grinding roller 3, the medium grinding roller 4 and the fine grinding roller 5 are shafts. Figure 2 A and B are bearings, and the driving mechanism is arranged at part B. The feeding pipe is in contact with the coarse grinding surface 6, and the feeding 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. Avoid the feed roller 2 and the coarse grinding roller 3 rotating too fast to cause the material to fly out due to the centripetal force.

[0055] In one embodiment of the present application, the coarse grinding surface 6, the medium grinding surface 7 and the fine grinding surface 8 are connected as a whole, the coarse grinding surface 6 is arranged on the top of the medium grinding surface 7 and the fine grinding surface 8, the medium 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 middle grinding surface 7 and the fine grinding surface 8 are arranged at intervals on both sides of the coarse grinding surface 6. The spacing between the coarse grinding surface 6, the middle grinding surface 7 and the fine grinding surface 8 and their corresponding grinding rollers directly determines the grinding particle size that can be achieved at their corresponding grinding positions. When the three grinding surfaces are integrated, if the grinding particle size of the material needs to be adjusted, the position of the corresponding grinding roller can be adjusted.

[0057] In a specific implementation, the coarse grinding surface 6 is tilted downward toward the middle grinding position, so that the coarsely ground Chinese herbal medicine material can automatically fall into the middle grinding position. The fine grinding surface 8 is arranged on the higher side of the coarse grinding surface 6, and the middle grinding surface 7 is arranged on the lower side of the coarse grinding surface 6, and the side end of the coarse grinding surface 6 close to the fine grinding surface 8 does not exceed the axis of the fine grinding roller 5, so that the material can fall into the fine grinding position during the two-wheel grinding.

[0058] In one embodiment of the present application, the spacing length 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 of the feeding roller 2 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 brought into 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 arranged 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 be directly corresponding to the discharge port 12 of the grinding box 1, and the material meeting the particle size requirement can be directly screened out through the sieve holes 11. The discharge end of the fine grinding position is also corresponding to the discharge port 12 of the grinding box 1. The three grinding positions are arranged in a "pin" shape around the straight cylindrical feeding roller. This arrangement can not only effectively grind the Chinese herbal medicine material in multiple layers, but also reduce the volume of the equipment.

[0065] In an embodiment of the present application, the outer walls of the parts 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 outer walls of the remaining parts 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 driving mechanism includes a driving 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 rough 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 driving 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 provided with gears. When the driving motor 21 is driven, the driving motor 21 drives the driving wheel 22 to transmit, and the driving motor 21 and the driving wheel 22 have the same rotation direction. The driving wheel 22 is meshed with the first transmission wheel 23 and the third transmission wheel 25 respectively, and the rotation direction of the first transmission wheel 23 and the third transmission wheel 25 is opposite to the rotation direction of the driving wheel 22. The second transmission wheel 24 has the same rotation direction as the first transmission wheel 23, and the fourth transmission wheel 26 has the opposite rotation direction to the third transmission wheel 25. The coarse grinding roller 3 and the medium grinding roller 4 are driven to rotate in the same direction by the driving mechanism, and the fine grinding roller 5 is driven 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 disposed on the outer side of the feeding roller 2 , the fifth transmission wheel 27 is meshed with the sixth transmission wheel 28 , the seventh transmission wheel 29 is transmission-connected with the first transmission wheel 23 , and the seventh transmission wheel 29 and the sixth transmission wheel 28 are coaxially disposed.

[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 provided 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 feeding 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 rough 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. Multi-layer grinding is achieved by setting different gaps for each grinding position.

[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 medium grinding roller 4 and the fine grinding roller 5 to rotate by 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 medium 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 delivered from the feed port 9 to the coarse grinding position through the feed pipe, and the material is ground for the first time by the coarse grinding roller 3;

[0081] S430, the material arrives at the middle grinding position from the discharge end of the coarse grinding position, and is subjected to a second grinding by the middle grinding roller 4. Under the action of gravity, the material with the required particle size falls into the discharge port 12 from the sieve hole 11 of the feed roller 2, and the material with the particle size not meeting the requirement is fed to the fine grinding position via the feed plate of the feed roller 2;

[0082] S440, grinding the material whose particle size does not meet the requirement for a third time by means of the fine grinding roller 5, until all the remaining materials meet the particle size requirement and are completely screened out by the sieve hole 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, the medium grinding roller 4 rotates to grind the material for the second time, and 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 sizes 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 suspended upside down. Under the action of gravity, this part of the material directly falls 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 holes 11.

[0085] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. 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 application.

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

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

Claims

1. A Chinese herbal medicine grinding device, characterized in that: It comprises a grinding box, wherein a straight cylindrical feeding roller is arranged in the grinding box, wherein a coarse grinding roller, a medium grinding roller, a fine grinding roller and a grinding profile are arranged in the feeding roller, and the lateral length of the grinding profile is equal to the lateral length of the feeding roller; The grinding profile 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 surface is arranged to be inclined downward toward the medium grinding position; The end of the grinding box is provided with a feed inlet, the feed inlet is provided with a feed pipe connected with the feed end of the coarse grinding position, the feed pipe abuts against the coarse grinding surface, the discharge end of the coarse grinding position is arranged corresponding to the feed end of the medium grinding position, the bottom of the grinding box is provided with a discharge port, and the discharge end of the fine grinding position corresponds to the discharge port; The inner wall of the feed roller is evenly provided with a plurality of obliquely arranged baffle plates, and a sieve hole penetrating the feed roller is provided between two adjacent baffle plates; the outside of the grinding box is provided with a driving mechanism for driving the coarse grinding roller, the medium grinding roller, the fine grinding roller and the feed roller to rotate simultaneously; wherein the coarse grinding roller and the medium grinding roller have the same rotation direction and are opposite to the rotation direction of the fine grinding roller, and the fine grinding roller has the same rotation direction as the feed roller; When the material after being ground by the middle grinding roller still does not meet the particle size requirement, the driving mechanism drives the feeding roller to send the material to the fine grinding position for second round grinding through the baffle plate of the feeding roller.

2. The Chinese herbal medicine grinding equipment according to claim 1, characterized in that: The coarse grinding surface, the middle grinding surface and the fine grinding surface are connected as a whole, the coarse grinding surface is arranged on the top of the middle grinding surface and the fine grinding surface, the middle 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; wherein 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 lengths of the intervals 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 toward 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 middle 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 middle grinding roller and the fine grinding roller.

6. The Chinese herbal medicine grinding equipment according to claim 1, characterized in that: The outer walls of the rough grinding roller, the medium grinding roller, the fine grinding roller, the rough grinding surface, the medium grinding surface and the fine grinding surface where the grinding teeth are not provided are arranged smoothly.

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 driving 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 device 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 meshed 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 medicine, applied to the Chinese herbal medicine grinding device according to any one of claims 1 to 9, characterized in that: Includes steps: The feeding 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 the 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 feeding roller, and the material with the particle size that does not meet the requirement is fed into the fine grinding position through the feeding plate of the feeding roller. The materials that do not meet the particle size requirements are ground for the 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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