Biological medicinal material crushing and screening device and method

Abstract

The invention belongs to the field of medicinal material processing, and particularly discloses a biological medicinal material smashing and screening device and method.The biological medicinal material smashing and screening device comprises a swing smashing mechanism, a screening mechanism and a pretreatment mechanism; the swing crushing mechanism comprises a fixing frame, a flour mill is movably arranged on the fixing frame, and a motor is arranged at the input end of the flour mill; the screening mechanism comprises filter screens arranged on the two sides of the flour mill, storage boxes are fixedly mounted on the two sides of the flour mill on the peripheries of the filter screens, and inclined plates are fixedly mounted in the storage boxes; the swinging crushing mechanism can drive the pulverizer to swing back and forth when the pulverizer crushes medicinal materials, so that the medicinal materials are in complete contact with blades of the pulverizer, filter screens are arranged on two sides of the pulverizer, medicinal powder screening work is repeatedly performed while the crushing effect is improved, the working efficiency is improved, a hammering block is repeatedly jacked up when the pulverizer swings, and the crushing efficiency is improved. And then the hammering block falls back by utilizing the self weight, so that the relatively hard biological medicinal materials are pre-crushed for multiple times.

Description

Technical Field

[0001] The present invention belongs to the field of medicinal material processing, and particularly relates to a biological medicinal material crushing and screening device and method. Background Art

[0002] Biological medicinal materials are important raw materials for pharmaceutical production. The biological medicinal material crushing and screening device is a key equipment for preprocessing medicinal materials in the pharmaceutical production process, which is used to crush biological medicinal materials into appropriate particle sizes and screen out qualified powders or granules to provide qualified raw materials for subsequent extraction, preparation and other technological processes. For example, the production of traditional Chinese medicine pills, tablets, capsules, etc. all requires prior crushing and screening of biological medicinal materials.

[0003] However, when the traditional biological medicinal material crushing and screening device works, it usually first crushes the medicinal materials, then completely takes out the crushed medicinal materials and puts them into the screening mechanism for screening, and then takes out the unqualified medicinal material powders and puts them back into the crushing mechanism for crushing. In this process, the staff needs to participate repeatedly, with high labor intensity and greatly reduced work efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a biological medicinal material crushing and screening device and method to solve the problem that the traditional biological medicinal material crushing and screening device requires repeated participation of staff during operation as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A biological medicinal material crushing and screening device includes a swing crushing mechanism, a screening mechanism and a pretreatment mechanism; the swing crushing mechanism includes a fixed frame, on which a grinding machine is movably arranged, and a motor is arranged at the input end of the grinding machine; the screening mechanism includes filter nets arranged on both sides of the grinding machine, storage boxes are fixedly installed on both sides of the grinding machine outside the filter nets, and inclined plates are fixedly installed in the storage boxes; the pretreatment mechanism includes a housing arranged on the fixed frame, a hammer block is movably arranged inside the housing, an inclined discharge port is arranged on the bottom surface of the housing, a baffle is slidably arranged in the inclined discharge port, sliders are fixedly installed on both sides of the hammer block through the housing, guide plates are fixedly installed on the housing on both sides of the sliders, a sliding rod is slidably arranged on the guide plate at the bottom of the slider, and a connecting rod is movably arranged between the sliding rod and the grinding machine.

[0007] Preferably, the housing is located on the top of the grinding machine, and a sealing cover is arranged at the inlet of the grinding machine.

[0008] Preferably, a pendulum is movably installed in the storage box at the top of the filter net through a rotating part, and a discharge valve is arranged at the bottom of the storage box.

[0009] Preferably, a feeding door is movably arranged on the front end surface of the housing, and a blocking rod is movably installed at the front end of the housing at the top of the baffle.

[0010] Preferably, sliding grooves are arranged on both side surfaces of the housing, and the sliding grooves are slidably connected with sliders.

[0011] Preferably, a rising groove and a falling groove are respectively arranged on the inner side of the guide plate. Calibration grooves are arranged at the top of the rising groove and the bottom of the falling groove. Inclined grooves are arranged between the top of the rising groove and the top of the falling groove and between the bottom of the rising groove and the bottom of the falling groove. The rising groove, the falling groove, the inclined groove and the calibration groove are all slidably connected with the sliding rod.

[0012] Preferably, movable parts II are movably arranged between the connecting rod and the sliding rod and the pulverizer respectively. A movable part I is movably arranged between the movable part II at the top of the connecting rod and the sliding rod.

[0013] Preferably, a break is arranged on the connecting rod, and the two ends of the connecting rod at the break are connected by a connecting bolt.

[0014] A method for using a biological medicine pulverizing and screening device includes:

[0015] S1. Put the biological medicine to be pulverized and screened into the pulverizer, and put the relatively hard biological medicine to be pulverized and screened into the housing.

[0016] S2. Start the pulverizer to perform pulverizing work. During the process, drive the pulverizer to swing on the fixed frame through the motor, so that the medicinal materials in the pulverizer are completely in contact with the blades and repeatedly move to the filter screen at the same time. The medicinal material powder with the fineness reaching the standard will pass through the filter screen and fall into the storage box to complete the screening.

[0017] S3. During the swinging process of the pulverizer, drive the sliding rod to move up and down by using the connecting rod. During the process, lift the hammer block by pushing the slider. When moving to the specified height, the sliding rod is staggered from the slider through the inclined groove. The hammer block hammers downward by its own weight to pre-crush the relatively hard biological medicine to be pulverized and screened. Then the sliding rod descends to the initial position through the falling groove, and the cycle repeats.

[0018] S4. After the pulverizing and screening of the medicinal materials in the pulverizer are completed, return the device to the upright position. At the same time, open the baffle and the sealing cover. The medicinal materials in the housing directly fall into the pulverizer. Then put new relatively hard biological medicine to be pulverized and screened into the housing to continue the crushing, screening and pre-treatment work.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The present invention can drive the pulverizer to swing back and forth when crushing medicinal materials through a swing crushing mechanism, so that the medicinal materials can fully contact the blades of the pulverizer. Filters are arranged on both sides of the pulverizer to repeatedly screen the medicinal powder while improving the crushing effect, thereby improving work efficiency. When the pulverizer swings, the hammering blocks are repeatedly lifted and then fall back by their own weight to pre-crush relatively hard biological medicinal materials multiple times, improving the work efficiency during subsequent crushing and screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a rear view of the present invention;

[0024] Figure 3 is a schematic diagram of the internal structure of the storage box of the present invention;

[0025] Figure 4 is a schematic diagram of the internal structure of the housing of the present invention;

[0026] Figure 5 is a schematic diagram of a partial structure of the guide plate of the present invention;

[0027] Figure 6 is a block diagram of the method steps of the present invention.

[0028] In the figure: 1. Swing crushing mechanism; 101. Fixed frame; 102. Pulverizer; 103. Motor; 104. Sealing cover; 2. Screening mechanism; 201. Storage box; 202. Filter; 203. Rotating part; 204. Swing hammer; 205. Tilted plate; 206. Discharge valve; 3. Pretreatment mechanism; 301. Housing; 3011. Feeding door; 3012. Blocking rod; 302. Baffle; 303. Guide plate; 3031. Rising groove; 3032. Falling-back groove; 3033. Tilted groove; 3034. Calibration groove; 3035. Moving part one; 304. Connecting rod; 3041. Moving part two; 3042. Fracture; 3043. Connecting bolt; 305. Hammering block; 306. Slide block; 307. Slide rod; 308. Tilted discharge port; 309. Slide groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific embodiments of the present invention will be provided in conjunction with the accompanying drawings of the specification.

[0030] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0031] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0032] As shown in Figure 1 、 2 、3 and shown in Figure 4 :

[0033] Embodiment 1: This embodiment provides a biological medicine material crushing and screening device, including a swing crushing mechanism 1, a screening mechanism 2, and a pretreatment mechanism 3; the swing crushing mechanism 1 includes a fixed frame 101, on which a grinding machine 102 is movably arranged, and a motor 103 is arranged at the input end of the grinding machine 102; the screening mechanism 2 includes filter nets 202 arranged on both sides of the grinding machine 102, storage boxes 201 are fixedly installed on both sides of the grinding machine 102 outside the filter nets 202, and inclined plates 205 are fixedly installed in the storage boxes 201; the pretreatment mechanism 3 includes a housing 301 arranged on the fixed frame 101, a hammering block 305 is movably arranged inside the housing 301, an inclined discharge port 308 is arranged on the bottom surface of the housing 301, a baffle 302 is slidably arranged in the inclined discharge port 308, sliders 306 are fixedly installed through both sides of the hammering block 305 on the housing 301, guide plates 303 are fixedly installed on the housing 301 on both sides of the sliders 306, a sliding rod 307 is slidably arranged on the guide plate 303 at the bottom of the slider 306, and a connecting rod 304 is movably arranged between the sliding rod 307 and the grinding machine 102.

[0034] When in use, the biological medicinal materials to be crushed and screened are put into the pulverizer 102, and the pulverizer 102 is started for crushing work. During the process, the motor 103 drives the pulverizer 102 to swing back and forth in a cycle on the fixed frame 101, so that the medicinal materials in the pulverizer 102 are completely in contact with the blades and at the same time are repeatedly moved onto the filter screen 202, improving the crushing effect of the pulverizer 102 on the medicinal materials. The medicinal material powder that reaches the standard fineness will pass through the filter screen 202 and fall into the storage box 201 to complete the screening. And two filter screens 202 are adopted. During the swinging process of the pulverizer 102, the medicinal materials in it will work continuously in the cycle of falling, crushing, filtering, falling, crushing, and filtering. The medicinal materials that do not meet the fineness requirements will fall back onto the blades at the bottom of the pulverizer 102 during the swinging process for multiple crushing, and then be filtered again, so that the medicinal material powder that meets the fineness requirements is screened out bit by bit, improving the crushing and screening effect. The medicinal material powder passing through the filter screen 202 will enter the storage box 201 through the inclined plate 205 and block the medicinal material powder in the storage box 201 from flowing back into the pulverizer 102. The staff can select filter screens 202 of different specifications according to the work requirements, so as to meet the multi-stage screening requirements;

[0035] The staff can put the relatively hard biological medicinal materials to be crushed and screened into the housing 301, so that they fall between the hammering block 305 and the baffle 302. During the swinging process of the pulverizer 102, the connecting rod 304 is used to drive the sliding rod 307 to move up and down. Using the crank connecting rod 304 principle, when the pulverizer 102 swings to the left or right, due to the decrease in the height of the connection between the connecting rod 304 and the pulverizer 102, it will pull the sliding rod 307 to move down synchronously through the connecting rod 304. The guide plate 303 will limit the position and direction of the sliding rod 307. During the process, the hammering block 305 will slide down due to its own weight due to the disappearance of the supporting force until it falls on the medicinal materials for hammering pre-crushing. When the pulverizer 102 swings back to its original position, due to the increase in the height of the connection between the connecting rod 304 and the pulverizer 102, it will push the sliding rod 307 to move up synchronously through the connecting rod 304. During the process, the hammering block 305 is lifted by pushing the slider 306 to perform the next hammering pre-crushing work. Repeating this cycle, by performing hammering pre-crushing on the hard medicinal materials when using the pulverizer 102 for crushing and screening of medicinal materials, reducing their hardness, the crushing resistance can be reduced during the subsequent crushing and screening work, improving the work efficiency. And certain vibrations will be generated during the hammering process, which can shake off the medicinal materials and medicinal powder adhering to the inner wall of the device, improving the screening and crushing efficiency to a certain extent.

[0036] As shown in the Figure 1 、 2 and Figure 4 figures:

[0037] Specifically, the housing 301 is located at the top of the pulverizer 102, and a sealing cover 104 is provided at the inlet of the pulverizer 102.

[0038] Specifically, a feeding door 3011 is movably provided on the front end surface of the shell 301 , and a blocking rod 3012 is movably installed on the front end of the shell 301 on the top of the baffle 302 .

[0039] Specifically, sliding grooves 309 are provided on both side surfaces of the housing 301 , and the sliding grooves 309 are slidably connected to the sliders 306 .

[0040] As attached Figure 1 , 2 , 4 and attached Figure 5 As shown:

[0041] Specifically, a break 3042 is provided on the connecting rod 304 , and the connecting rods 304 at both ends of the break 3042 are connected via a connecting bolt 3043 .

[0042] As can be seen from the above, after the crushing and screening of the medicinal materials in the mill 102 is completed, the device is returned to the normal position, and the baffle 302 and the sealing cover 104 are opened at the same time, and the medicinal materials in the housing 301 directly fall into the mill 102, and then new and harder biological medicinal materials to be crushed and screened are put into the housing 301 to continue the crushing, screening and pretreatment work, thereby improving the work efficiency;

[0043] The staff rotates the feeding door 3011 to open it and put the hard medicinal materials into the work. The blocking rod 3012 will limit the position of the baffle 302 during the hammering work to prevent it from moving due to the hammering of the hammer block 305. When the hammering work is completed, the blocking rod 3012 is rotated to make it staggered with the baffle 302 to release the limit on the position of the baffle 302, so that the staff can pull out the baffle 302 to open the inclined discharge port 308.

[0044] When the staff needs to clean the residual powder inside the grinding mill 102, they rotate the connecting bolt 3043 to separate the connecting rod 304 from the break 3042, thereby disconnecting the connection between the sliding rod 307 and the grinding mill 102. At this time, the swingable angle of the grinding mill 102 can be increased so that the top opening of the grinding mill 102 faces obliquely downward, which is convenient for staff to clean.

[0045] As attached Figure 3 , 4 and attached Figure 5 As shown:

[0046] Embodiment 2: This embodiment is basically the same as the previous embodiment, except that a pendulum 204 is movably installed in the material storage box 201 on the top of the filter 202 via a rotating member 203 , and a discharge valve 206 is provided at the bottom of the material storage box 201 .

[0047] Specifically, the inner side of the guide plate 303 is respectively provided with a rising groove 3031 and a falling groove 3032, the top of the rising groove 3031 and the bottom of the falling groove 3032 are provided with a correction groove 3034, the top of the rising groove 3031 and the top of the falling groove 3032 and the bottom of the rising groove 3031 and the bottom of the falling groove 3032 are provided with an inclined groove 3033, the rising groove 3031, the falling groove 3032, the inclined groove 3033 and the correction groove 3034 are all slidably connected with the slide bar 307.

[0048] Specifically, a second movable part 3041 is movably provided between the connecting rod 304 , the sliding rod 307 and the grinding mill 102 , and a first movable part 3035 is movably provided between the second movable part 3041 at the top of the connecting rod 304 and the sliding rod 307 .

[0049] From the above, we can see that Figure 4 As shown, the hammer block 305 is at the lowest point, the slide bar 307 is at the highest point, and the grinding mill 102 is in the return state. During the swinging process of the grinding mill 102, the connecting rod 304 is used to first drive the slide bar 307 to move downward, and the slide bar 307 will move steadily downward under the limit guide of the return groove 3032, and finally slide into the rising groove 3031 under the inclined guide of the inclined groove 3033. At this time, the slide bar 307 is located at the bottom of the slider 306. The return swing of the grinding mill 102 will drive the slide bar 307 to move upward, and then push the slider 306 and the hammer block 305 to move upward. After the hammer block 305 moves to the top of the feeding door 3011, it stops, and the staff joins The medicinal materials continue to move upward, and finally slide into the return groove 3032 under the inclined guide of the inclined groove 3033, and at this time the slide bar 307 will be staggered with the slider 306, and the hammer block 305 uses its own weight to hammer downward because the supporting force disappears, and pre-crushes the harder biological medicinal materials to be crushed and screened. Then the slide bar 307 drops to the initial position through the return groove 3032, and the cycle is repeated, so that the hammer block 305 completely uses its own weight to hammer, and during the hammering process, the slide bar 307 does not limit its minimum height, so that the hammering speed of the hammer block 305 will not be affected by the swing speed of the mill 102, thereby improving the hammering pre-crushing effect;

[0050] After the slide bar 307 slides into the falling groove 3032 or the rising groove 3031 through the inclined groove 3033, its position will be corrected through the correction groove 3034 so that it will not slide back into the inclined groove 3033 during subsequent ascent or descent, thereby ensuring stability;

[0051] During the swinging process of the grinding mill 102, inertia is utilized to drive the pendulum 204 to swing around the rotating part 203 as the axis, and when falling back, it swings in the opposite direction, and then hammers on the filter 202, so as to shake off the powder blocked on the filter 202, and avoid affecting the screening efficiency due to blockage. A buffer pad is provided on the outer surface of the pendulum 204 to avoid deformation of the filter 202.

[0052] As attached Figure 6 As shown:

[0053] Embodiment 3: This embodiment is basically the same as the previous embodiment, except that a method for using a biological medicine crushing and screening device includes:

[0054] S1, putting the biological medicinal materials to be crushed and screened into the grinding machine 102, and putting the harder biological medicinal materials to be crushed and screened into the housing 301;

[0055] S2, start the grinding mill 102 to grind, during which the motor 103 drives the grinding mill 102 to swing on the fixed frame 101, so that the medicinal materials in the grinding mill 102 are completely in contact with the blades and repeatedly move to the filter screen 202, and the medicinal material powder reaching the standard fineness will pass through the filter screen 202 and fall into the storage box 201 to complete the screening;

[0056] S3, during the swinging process of the grinding mill 102, the connecting rod 304 is used to drive the slide bar 307 to move up and down. During the process, the hammer block 305 is lifted by pushing the slider 306. After moving to a specified height, the slide bar 307 is staggered with the slider 306 through the inclined groove 3033. The hammer block 305 hammers downward by its own weight to pre-crush the harder biological medicinal materials to be crushed and screened. Then the slide bar 307 drops to the initial position through the return groove 3032, and the cycle is repeated;

[0057] S4. After the crushing and screening of the medicinal materials in the grinding mill 102 is completed, the device is returned to the normal position, and the baffle 302 and the sealing cover 104 are opened at the same time. The medicinal materials in the shell 301 fall directly into the grinding mill 102, and then new and harder biological medicinal materials to be crushed and screened are put into the shell 301 to continue the crushing, screening and pretreatment work.

[0058] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application (e.g., changes in the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structures that perform the recited function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0059] In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present invention, or those features that are not relevant to the implementation of the present invention).

[0060] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be a routine task of design, manufacturing and production.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A biological medicine crushing and screening device, characterized in that: It comprises a swing crushing mechanism (1), a screening mechanism (2) and a pre-processing mechanism (3); The swing crushing mechanism (1) comprises a fixed frame (101), a grinding mill (102) is movably arranged on the fixed frame (101), and a motor (103) is arranged at the input end of the grinding mill (102); The screening mechanism (2) comprises a filter screen (202) arranged on both sides of the grinding mill (102), a material storage box (201) is fixedly installed on both sides of the grinding mill (102) outside the filter screen (202), and an inclined plate (205) is fixedly installed inside the material storage box (201); The pretreatment mechanism (3) comprises a shell (301) arranged on the fixed frame (101), a hammer block (305) is movably arranged inside the shell (301), an inclined discharge port (308) is arranged on the bottom surface of the shell (301), a baffle (302) is slidably arranged inside the inclined discharge port (308), sliders (306) are fixedly installed on both sides of the hammer block (305) passing through the shell (301), guide plates (303) are fixedly installed on the shell (301) on both sides of the slider (306), a slide rod (307) is slidably arranged on the guide plate (303) at the bottom of the slider (306), and a connecting rod (304) is movably arranged between the slide rod (307) and the grinding mill (102).

2. The biological medicine crushing and screening device according to claim 1, characterized in that: The housing (301) is located on the top of the grinding mill (102), and a sealing cover (104) is provided at the inlet of the grinding mill (102).

3. The biological medicine crushing and screening device according to claim 1, characterized in that: A pendulum (204) is movably installed in the material storage box (201) at the top of the filter screen (202) via a rotating member (203), and a discharge valve (206) is arranged at the bottom of the material storage box (201).

4. The biological medicine crushing and screening device according to claim 1, characterized in that: A material feeding door (3011) is movably provided on the front end surface of the shell (301), and a blocking rod (3012) is movably installed on the front end of the shell (301) on the top of the baffle (302).

5. The biological medicine crushing and screening device according to claim 1, characterized in that: Slide grooves (309) are provided on both side surfaces of the housing (301), and the slide grooves (309) are slidably connected to the slider (306).

6. The biological medicine crushing and screening device according to claim 1, characterized in that: The inner side of the guide plate (303) is respectively provided with a rising groove (3031) and a falling groove (3032); the top of the rising groove (3031) and the bottom of the falling groove (3032) are both provided with a correction groove (3034); an inclined groove (3033) is provided between the top of the rising groove (3031) and the top of the falling groove (3032) and between the bottom of the rising groove (3031) and the bottom of the falling groove (3032); the rising groove (3031), the falling groove (3032), the inclined groove (3033) and the correction groove (3034) are all slidably connected to the sliding rod (307).

7. The biological medicine crushing and screening device according to claim 6, characterized in that: A movable part 2 (3041) is movably arranged between the connecting rod (304), the sliding rod (307) and the grinding mill (102), and a movable part 1 (3035) is movably arranged between the movable part 2 (3041) at the top of the connecting rod (304) and the sliding rod (307).

8. The biological medicine crushing and screening device according to claim 1, characterized in that: The connecting rod (304) is provided with a break (3042), and the connecting rods (304) at both ends of the break (3042) are connected via a connecting bolt (3043).

9. A method for using a biological medicine crushing and screening device according to any one of claims 1 to 8, characterized in that: include: S1, putting biological medicinal materials to be crushed and screened into a grinding machine (102), and putting harder biological medicinal materials to be crushed and screened into a housing (301); S2, starting the grinding mill (102) to perform a grinding operation. During the process, the motor (103) drives the grinding mill (102) to swing on the fixed frame (101), so that the medicinal materials in the grinding mill (102) are completely in contact with the blades and repeatedly move to the filter screen (202). The medicinal material powder that reaches the standard fineness will pass through the filter screen (202) and fall into the storage box (201) to complete the screening; S3, during the swinging process of the grinding mill (102), the connecting rod (304) is used to drive the slide bar (307) to move up and down. During the process, the hammer block (305) is lifted by pushing the slider (306). After moving to a specified height, the slide bar (307) is staggered with the slider (306) through the inclined groove (3033). The hammer block (305) hammers downward by its own weight to pre-crush the harder biological medicinal materials to be crushed and screened. Then, the slide bar (307) is lowered to the initial position through the return groove (3032), and the cycle is repeated; S4. After the crushing and screening of the medicinal materials in the grinding mill (102) is completed, the device is returned to the normal position, and the baffle (302) and the sealing cover (104) are opened at the same time, and the medicinal materials in the shell (301) fall directly into the grinding mill (102), and then new and harder biological medicinal materials to be crushed and screened are put into the shell (301) to continue the crushing, screening and pretreatment work.

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