A micro-powder crushing and classifying machine combined with different crushing forms

Abstract

The application relates to a micro-powder crushing and grading machine combined with different crushing forms, which comprises a base, a processing module arranged on the base, a lower shell, a middle shell and a grading assembly, an air inlet arranged on the side wall of the lower shell, a rotary cutter head assembly arranged in the middle shell, a taper cutter, a swing cutter and a fixed hammer arranged on the rotary cutter head assembly from top to bottom, a taper ring arranged on the side wall of the middle shell corresponding to the taper cutter, and a crushing tooth ring arranged below the taper ring, a grading wheel arranged on the top of the middle shell, and the grading wheel connected with the grading assembly; three groups of processing tools arranged in an integrated mode are used for further crushing of medium particles, so that the purpose of microparticulation is achieved, and each cutter is convenient to install and position.

Description

Technical Field

[0001] This invention belongs to the field of traditional Chinese medicine pulverization technology, specifically a micro powder pulverizer and classifier with different pulverization methods. Background Technology

[0002] In the process of modernizing traditional Chinese medicine, "micronization" is an important technical means. After "micronization", the particles of traditional Chinese medicine are finer and more uniform, thus increasing the surface area, porosity, adsorption and solubility. The medicine can be better dispersed and dissolved in gastric juice, increasing the contact area with the gastric mucosa, thereby making it easier to be absorbed by the gastrointestinal tract and greatly improving bioavailability.

[0003] However, Chinese medicinal herbs are diverse and complex, broadly categorized as: roots and rhizomes, whole herbs, fruits, minerals, barks, fungi, animal products, flowers, and others. Therefore, when faced with such a wide variety and complex state of medicinal herbs, using only one pulverizing method during the grinding process is clearly insufficient. According to my understanding, most manufacturers currently use traditional, single-method pulverization for the "micronization" of Chinese medicinal herbs, which presents numerous technological problems. Firstly, achieving the required fineness is difficult, and even when a certain fineness is reached, the yield is low. Secondly, sieving after reaching a certain fineness is also difficult. Thirdly, the grinding temperature is too high. Fourthly, dust leakage during the grinding process causes environmental pollution, making it difficult to use in cleanrooms.

[0004] The micronization process of powders is essentially the process by which individual particles within a macroscopic powder are broken, fractured, and refined under the action of external forces, thereby causing changes in the overall performance indicators of the powder. The external forces used in material pulverization are achieved through impact, collision, shearing, grinding, and dispersion. The choice of pulverization method depends on the properties of the material and the required pulverization ratio. The physical and chemical properties of the material play a significant role, with hardness and fracturing ability being paramount. Impact is very effective for hard and brittle materials, while grinding and shearing methods are better for fibrous plant materials. Specific pulverization devices include pendulum hammers, pendulum blades, and fixed conical blades. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the prior art by proposing a vertically integrated grinding chamber that combines multiple grinding methods and establishes a grading device above the grinding chamber, thereby forming a micro-powder grinding and grading machine with different grinding methods, thus meeting the need for "micro-powdering" of traditional Chinese medicine.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a micro powder pulverizer and classifier with different pulverization methods, comprising: a base, a processing module disposed on the base, the processing module comprising a lower shell, a middle shell and a classification assembly, an air inlet disposed on the side wall of the lower shell, a rotating cutter assembly disposed in the middle of the middle shell, a conical cutter, a swing cutter and a fixed hammer disposed sequentially from top to bottom on the rotating cutter assembly, a conical ring disposed on the side wall of the middle shell corresponding to the conical cutter, and a pulverizing toothed ring disposed below the conical ring; A grading wheel is provided on the top of the middle housing, and the grading wheel is connected to the grading assembly.

[0007] As a preferred technical solution for a micro-powder pulverizer and classifier combining different pulverization methods, the rotary cutter disc assembly includes a connecting seat and a conical cutter disc, which are connected by an intermediate column.

[0008] As a preferred technical solution for a micro powder pulverizer and classifier combining different pulverization methods, the connecting seat is provided with a first countersunk hole, the conical cutter disc is provided with a second countersunk hole, and the two ends of the intermediate column are respectively provided with a first threaded hole and a second threaded hole. The first threaded hole and the first countersunk hole are connected by bolts, and the second threaded hole and the second countersunk hole are connected by bolts.

[0009] As a preferred technical solution for a micro powder pulverizer and classifier combining different pulverization methods, the connecting seat is also provided with a third threaded hole, the fixed hammer includes a suspension plate and hammer bodies evenly distributed at the bottom edge of the suspension plate, a reinforcing block is also provided on one side of the hammer body, the reinforcing block is connected to the suspension plate, the reinforcing block is provided with a third countersunk hole, and the third countersunk hole and the third threaded hole are connected by bolts.

[0010] As a preferred technical solution for a micro-powder pulverizer and classifier combining different pulverization methods, the conical cutter disc is provided with four fixing plates, and the fixing plates are provided with two fixing holes.

[0011] As a preferred technical solution for a micro powder pulverizer and classifier combining different pulverization methods, the conical blade includes a carrier plate and a blade strip disposed on one side of the carrier plate. The carrier plate is provided with a partition groove, and a nut is disposed in the partition groove. A side hole is provided on one side of the partition groove, and the fixing hole is connected to the side hole by bolts.

[0012] As a preferred technical solution for a micro-powder pulverizer and classifier combining different pulverization methods, the swing blade includes a chassis, a sleeve is provided on the chassis, and a spiral groove is provided on the sleeve.

[0013] As a preferred technical solution for a micro-powder pulverizer and classifier combining different pulverization methods, the chassis is alternately equipped with annular partitions and a first cutter, a second cutter, and a third cutter. The annular partitions are provided with a first sleeve hole, and the sleeve is disposed in the first sleeve hole.

[0014] As a preferred technical solution for a micro powder pulverizer and classifier combining different pulverization methods, the first cutter is provided with a second set of holes, and the inner wall of the second set of holes is provided with a first limiting shaft; The second cutter is provided with a third set of holes, and a second limiting shaft is provided on the inner wall of the third set of holes; The third cutter is provided with a fourth set of holes, and a third limiting shaft is provided on the inner wall of the fourth set of holes; The first limiting shaft, the second limiting shaft, and the third limiting shaft are embedded in the spiral groove.

[0015] As a preferred technical solution for a micro-powder pulverizer and classifier combining different pulverization methods, the sidewall of the intermediate column is provided with a first vertical groove, a second vertical groove and a third vertical groove. The side of the first vertical groove is provided with a first side groove, the side of the second vertical groove is provided with a second side groove, and the side of the third vertical groove is provided with a third side groove. The first limiting shaft is disposed in the first vertical groove, the second limiting shaft is embedded in the second vertical groove, and the third limiting shaft is embedded in the third vertical groove.

[0016] The beneficial effects of the present invention are as follows: The present invention further crushes the medium-sized particles by integrating three sets of processing tools with different methods to achieve micronization, and facilitates the installation and positioning of each tool. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connecting seat and the conical cutter head in this invention; Figure 3 This is a schematic diagram of the overall structure of the rotary cutter head assembly in this invention; Figure 4 This is a schematic diagram of the oscillating blade in this invention; Figure 5 This is a schematic diagram of the conical cutter in this invention; Figure 6 This is a cross-sectional structural diagram of the rotary cutter head assembly in this invention; Figure 7 This is a schematic diagram of the overall structure of the chassis in this invention; Figure 8 This is a schematic diagram of the exploded structure of the conical cutter in this invention; Figure 9 This is a schematic diagram of the structure of the intermediate column in this invention; Figure 10 This is a schematic diagram of the structure of the first cutter in this invention; Figure 11 This is a schematic diagram of the structure of the second cutter in this invention; Figure 12 This is a schematic diagram of the structure of the third cutter in this invention.

[0018] Reference numerals: 100, base; 200, processing module; 304, conical ring; 305, crushing gear ring; 202, middle shell; 306, grading wheel; 309g, first threaded hole; 307a, first countersunk hole; 309h, second threaded hole; 308a, second countersunk hole; 307, connecting seat; 303, fixed hammer; 303b, hammer body; 303a, suspension plate; 303c, reinforcing block 303d, Third countersunk hole; 307b, Third threaded hole; 308, Tapered cutter head; 308b, Fixing plate; 301, Tapered cutter; 301b, Cutting bar; 301a, Carrier plate; 301c, Groove; 308c, Fixing hole; 301d, Side hole; 302, Swing cutter; 302a, Base plate; 302d, Ring partition; 302b, Sleeve; 302d-1, First sleeve hole; 302e First cutting tool; 302e-1, second sleeve hole; 302f, second cutting tool; 302f-1, third sleeve hole; 302g, third cutting tool; 302g-1, fourth sleeve hole; 302c, spiral groove; 309, intermediate post; 309d, first side groove; 309e, second side groove; 309f, third side groove; 302e-2, first limiting shaft; 309a, first vertical groove; 302f- 2. Second limiting shaft; 309b. Second vertical groove; 302g-2. Third limiting shaft; 309c. Third vertical groove; 201. Lower housing; 103. Bearing housing assembly; 101. Crushing motor; 102. Main shaft; 104. Pulley; 105. Guide ring; 106. Feed inlet; 300. Rotary cutter head assembly; 107. Discharge outlet; 203. Grading assembly; 108. Grading motor. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0023] Example 1

[0024] Reference Figures 1-12 This embodiment provides a micro powder pulverizer and classifier with different pulverization combinations, including a base 100, a processing module 200 on the base 100, the processing module 200 including a lower shell 201, a middle shell 202 and a classification assembly 203, an air inlet on the side wall of the lower shell 201, a rotating cutter assembly 300 in the middle of the middle shell 202, a conical cutter 301, a swing cutter 302 and a fixed hammer 303 arranged sequentially from top to bottom on the rotating cutter assembly 300, a conical ring 304 on the side wall of the middle shell 202 corresponding to the conical cutter 301, and a pulverizing toothed ring 305 below the conical ring 304; A grading wheel 306 is provided on the top of the middle housing 202, and the grading wheel 306 is connected to the grading assembly 203.

[0025] In this embodiment, three sets of processing tools with different methods are integrated to further pulverize the medium-sized particles to achieve micronization.

[0026] Specifically, the present invention achieves this objective based on a combined rotary cutter head assembly 300, further referring to... Figure 3 The rotary cutter head assembly 300 includes a connecting seat 307 and a conical cutter head 308, which are connected by an intermediate column 309.

[0027] A fixed hammer 303 for impact crushing is located at the bottom of the connecting seat 307, a swing blade 302 for shearing is fixed at the intermediate column 309, and a conical blade 301 is fixed on the conical blade disc 308.

[0028] Specifically, the connecting seat 307 is provided with a first countersunk hole 307a, the conical cutter disc 308 is provided with a second countersunk hole 308a, and the intermediate column 309 is provided with a first threaded hole 309g and a second threaded hole 309h at both ends, respectively. The first threaded hole 309g is connected to the first countersunk hole 307a by bolts, and the second threaded hole 309h is connected to the second countersunk hole 308a by bolts.

[0029] The connecting seat 307 is also provided with a third threaded hole 307b. The fixed hammer 303 includes a suspension plate 303a and hammer bodies 303b evenly distributed on the bottom edge of the suspension plate 303a. A reinforcing block 303c is also provided on one side of the hammer body 303b. The reinforcing block 303c is connected to the suspension plate 303a. A third countersunk hole 303d is provided on the reinforcing block 303c. The third countersunk hole 303d and the third threaded hole 307b are connected by bolts.

[0030] It should be noted that the first countersunk hole 307a and the third threaded hole 307b are 30 degrees apart, and the second countersunk hole 308a is 30 degrees apart from the fixing plate 308b. The positions of the first countersunk hole 307a and the second countersunk hole 308a are corresponding. There are four of the first countersunk hole 307a, the third threaded hole 307b, and the second countersunk hole 308a arranged in a circumferential array.

[0031] The conical cutter head 308 is provided with four fixing plates 308b, and the fixing plates 308b are provided with two fixing holes 308c.

[0032] The conical cutter 301 includes a carrier plate 301a and a cutter bar 301b disposed on one side of the carrier plate 301a. The carrier plate 301a is provided with a partition groove 301c, a nut is disposed in the partition groove 301c, and a side hole 301d is provided on one side of the partition groove 301c. The fixing hole 308c is connected to the side hole 301d by bolts.

[0033] A pad can be installed in the second countersunk hole 308a, and the carrier plate 301a can seal the second countersunk hole 308a to prevent the bolts from loosening.

[0034] The oscillating cutter 302 includes a base 302a, a sleeve 302b on the base 302a, and a spiral groove 302c on the sleeve 302b.

[0035] The chassis 302a is alternately provided with annular partition 302d and first cutter 302e, second cutter 302f and third cutter 302g. Annular partition 302d is provided with a first sleeve hole 302d-1 and sleeve 302b is provided in the first sleeve hole 302d-1.

[0036] The first cutting tool 302e is provided with a second sleeve hole 302e-1, and the inner wall of the second sleeve hole 302e-1 is provided with a first limiting shaft 302e-2; The second cutter 302f is provided with a third sleeve hole 302f-1, and the inner wall of the third sleeve hole 302f-1 is provided with a second limiting shaft 302f-2; The third cutter 302g is provided with a fourth sleeve hole 302g-1, and a third limiting shaft 302g-2 is provided on the inner wall of the fourth sleeve hole 302g-1; The first limiting shaft 302e-2, the second limiting shaft 302f-2, and the third limiting shaft 302g-2 are embedded in the spiral groove 302c. The first limiting shaft 302e-2, the second limiting shaft 302f-2, and the third limiting shaft 302g-2 are all set in pairs.

[0037] The side wall of the intermediate column 309 is provided with a first vertical groove 309a, a second vertical groove 309b and a third vertical groove 309c. The first vertical groove 309a is provided with a first side groove 309d, the second vertical groove 309b is provided with a second side groove 309e, and the third vertical groove 309c is provided with a third side groove 309f. The first limiting shaft 302e-2 is provided in the first vertical groove 309a, the second limiting shaft 302f-2 is embedded in the second vertical groove 309b, and the third limiting shaft 302g-2 is embedded in the third vertical groove 309c.

[0038] Specifically, the swing cutter 302 is supported by the chassis 302a. The first cutter 302e, the annular partition 302d, the second cutter 302f, the annular partition 302d, the third cutter 302g, and the annular partition 302d are alternately placed on the sleeve 302b. It should be noted that during the placement of the first cutter 302e, the first limiting shaft 302e-2 needs to be placed in the spiral groove 302c and allowed to spiral down to the bottom. At this time, the first cutter 302e is in a radial position with the blade facing outward. Then the annular partition 302d is placed. After the second cutter 302f is placed, due to the change in the height of the second cutter 302f and the change in the position of the second limiting shaft 302f-2 on the second cutter 302f, the second cutter 302f is still facing outward. The same applies to the third cutter 302g.

[0039] Specifically, in the vertical direction, that is, along the length of the spiral, the first limiting axis 302e-2, the second limiting axis 302f-2, and the third limiting axis 302g-2 are equidistantly arranged. According to the design, the top-view projection of the positions of the first limiting axis 302e-2, the second limiting axis 302f-2, and the third limiting axis 302g-2 in the spiral groove 302c determines the position of the first limiting axis 302e-2, the second limiting axis 302f-2, and the third limiting axis 302g-2 on their respective cutters.

[0040] Preferably, when the vertical distance between the first limiting shaft 302e-2, the second limiting shaft 302f-2, and the third limiting shaft 302g-2 is equal to the pitch of a single spiral groove 302c, the structures of the first cutter 302e, the second cutter 302f, and the third cutter 302g are completely identical.

[0041] It should be noted that the positions of the first vertical groove 309a, the second vertical groove 309b, and the third vertical groove 309c correspond to the positions of the first limiting shaft 302e-2, the second limiting shaft 302f-2, and the third limiting shaft 302g-2, respectively. When the structures of the first cutter 302e, the second cutter 302f, and the third cutter 302g are completely identical, the first vertical groove 309a, the second vertical groove 309b, and the third vertical groove 309c completely overlap, and the positions of the first side groove 309d, the second side groove 309e, and the third side groove 309f are at the same height as the first limiting shaft 302e-2, the second limiting shaft 302f-2, and the third limiting shaft 302g-2.

[0042] After placing the first cutter 302e, the second cutter 302f, the annular partition 302d, and the third cutter 302g, with the blades facing outwards, insert the intermediate post 309 into the sleeve 302b from above. Rotate the intermediate post 309 so that the first limiting shaft 302e-2, the second limiting shaft 302f-2, and the third limiting shaft 302g-2 are respectively embedded into the first side groove 309d, the second side groove 309e, and the third side groove 309f. Then, tighten the bolts at the top to connect the intermediate post 309 and the conical cutter disc 308. While tightening the top bolts, tighten the bolts at the bottom to connect the intermediate post 309 and the connecting seat 307, completing the overall installation and fixing.

[0043] It should be noted that the bottom of the sleeve 302b is provided with a hole structure for bolts to be connected to the intermediate post 309, but the hole structure is not large enough for the intermediate post 309 to pass through.

[0044] A crushing motor 101 is mounted on the base 100, a main shaft 102 is mounted in the lower housing 201, and a bearing housing assembly 103 is mounted outside the main shaft 102. The crushing motor 101 and the main shaft 102 are connected by a pulley 104. A guide ring 105 is also mounted below the classifying wheel. A feed inlet 106 is mounted on the side wall of the middle housing 202 and is located above the rotating cutter head assembly 300. A discharge outlet 107 is mounted at the classifying assembly 203, and a classifying motor 108 is mounted above the classifying assembly 203.

[0045] The present invention provides a micro-powder pulverizer and classifier with multiple different pulverization methods, including a rotary pulverizing mechanism installed in a pulverizing chamber housing. The housing is divided into three pulverizing zones that are connected in the middle. Each of the three pulverizing zones is equipped with a coaxial rotary pulverizing device, which is a fixed hammer pulverizing device, a pendulum pulverizing device, and a conical pulverizing device.

[0046] This design improves adaptability to different materials. In the first grinding zone, the impact of the fixed hammer is effective in grinding various hard materials, and the large gap between the fixed hammer and the toothed ring provides strong grinding and pre-grinding. In the second grinding zone, the shearing properties of the blades are used to grind various fibrous materials, and the smaller gap between the pendulum grinding device and the toothed ring provides fine grinding. In the third grinding zone, a fixed conical blade is used to grind the material, which obstructs the material flow and effectively controls the particle size. Ultimately, this design meets the need for "micronization" of traditional Chinese medicine.

[0047] During rotation, each pulverizing device can engage with its corresponding gear ring to perform pulverization in stages. When applied to the pharmaceutical production field, it can increase the central particle size of Chinese medicinal materials from 300-500 mesh obtained by traditional pulverization processes to below 40 micrometers, thereby greatly improving the absorption rate and degree of active ingredients.

[0048] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A micro-powder pulverizer and classifier with different pulverization methods, characterized in that: include, A base (100) is provided with a processing module (200). The processing module (200) includes a lower housing (201), a middle housing (202), and a grading assembly (203). An air inlet is provided on the side wall of the lower housing (201). A rotating blade assembly (300) is provided in the middle of the middle housing (202). A conical blade (301), a swing blade (302), and a fixed hammer (303) are arranged sequentially from top to bottom on the rotating blade assembly (300). A conical ring (304) is provided on the side wall of the middle housing (202) corresponding to the conical blade (301). A crushing toothed ring (305) is provided below the conical ring (304). The top of the middle housing (202) is provided with a grading wheel (306), which is connected to the grading assembly (203); The rotary cutter head assembly (300) includes a connecting seat (307) and a conical cutter head (308), which are connected by an intermediate column (309). The swing blade (302) includes a chassis (302a), a sleeve (302b) is provided on the chassis (302a), and a spiral groove (302c) is provided on the sleeve (302b). The chassis (302a) is alternately provided with annular partitions (302d) and first cutters (302e), second cutters (302f), and third cutters (302g). The annular partitions (302d) are provided with first sleeve holes (302d-1), and the sleeve (302b) is disposed in the first sleeve holes (302d-1). The first cutter (302e) is provided with a second sleeve hole (302e-1), and the inner wall of the second sleeve hole (302e-1) is provided with a first limiting shaft (302e-2). The second cutter (302f) is provided with a third sleeve hole (302f-1), and the inner wall of the third sleeve hole (302f-1) is provided with a second limiting shaft (302f-2). The third cutter (302g) is provided with a fourth sleeve hole (302g-1), and a third limiting shaft (302g-2) is provided on the inner wall of the fourth sleeve hole (302g-1); The first limiting shaft (302e-2), the second limiting shaft (302f-2), and the third limiting shaft (302g-2) are embedded in the spiral groove (302c); The sidewall of the intermediate column (309) is provided with a first vertical groove (309a), a second vertical groove (309b) and a third vertical groove (309c). The first vertical groove (309a) is provided with a first side groove (309d) on its side, the second vertical groove (309b) is provided with a second side groove (309e) on its side, and the third vertical groove (309c) is provided with a third side groove (309f) on its side. The first limiting shaft (302e-2) is provided in the first vertical groove (309a), the second limiting shaft (302f-2) is embedded in the second vertical groove (309b), and the third limiting shaft (302g-2) is embedded in the third vertical groove (309c).

2. The micro-powder pulverizer and classifier with different pulverization combinations according to claim 1, characterized in that: The connecting seat (307) is provided with a first countersunk hole (307a), the conical cutter disc (308) is provided with a second countersunk hole (308a), and the two ends of the intermediate column (309) are respectively provided with a first threaded hole (309g) and a second threaded hole (309h). The first threaded hole (309g) is connected to the first countersunk hole (307a) by bolts, and the second threaded hole (309h) is connected to the second countersunk hole (308a) by bolts.

3. The micro-powder pulverizer and classifier with different pulverization combinations according to claim 2, characterized in that: The connecting seat (307) is also provided with a third threaded hole (307b). The fixed hammer (303) includes a suspension plate (303a) and hammer bodies (303b) evenly distributed on the bottom edge of the suspension plate (303a). A reinforcing block (303c) is also provided on one side of the hammer body (303b). The reinforcing block (303c) is connected to the suspension plate (303a). A third countersunk hole (303d) is provided on the reinforcing block (303c). The third countersunk hole (303d) and the third threaded hole (307b) are connected by bolts.

4. The micro-powder pulverizer and classifier with different pulverization combinations according to claim 3, characterized in that: The conical cutter head (308) is provided with four fixing plates (308b), and the fixing plates (308b) are provided with two fixing holes (308c).

5. The micro-powder pulverizer and classifier with different pulverization combinations according to claim 4, characterized in that: The conical cutter (301) includes a carrier plate (301a) and a blade (301b) disposed on one side of the carrier plate (301a). The carrier plate (301a) is provided with a groove (301c), a nut is disposed in the groove (301c), and a side hole (301d) is provided on one side of the groove (301c). The fixing hole (308c) is connected to the side hole (301d) by bolts.

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