Industrial hemp crushing device

Abstract

The invention relates to the technical field of industrial hemp crushing, and discloses an industrial hemp crushing device which comprises a vertical plate, universal wheels are fixedly connected to the bottom of the vertical plate, a material receiving part is fixedly connected to the surface of the vertical plate, a screening mechanism is arranged at the top of the vertical plate, and a fixing part is arranged at the top of the screening mechanism. And a crushing mechanism is arranged on the surface of the fixing piece. According to the industrial hemp crushing device, industrial hemp can be rapidly screened out, impurities such as soil hidden in the industrial hemp, blocky stones and fine metal fragments are screened out, if the impurities are mixed into subsequent industrial hemp products, the purity and quality of the products can be seriously influenced, and the industrial hemp crushing device has the advantages of being high in practicability and the like. According to the industrial hemp crushing device, the quality of industrial hemp is effectively improved, the crushing part is like a precise crusher, the industrial hemp is finely ground without any fiber tissue, the grinding effect on the industrial hemp is effectively improved, and the industrial hemp is crushed into finer and more uniform granular substances.

Description

Technical Field

[0001] The invention relates to the technical field of industrial hemp crushing, in particular to an industrial hemp crushing device. Background Art

[0002] Industrial hemp refers to the original plants of the genus Cannabis with a tetrahydrocannabinol (THC) content of less than 0.3% (percentage by dry matter weight) and its extracted products. Industrial hemp has a variety of uses. From the fiber perspective, its stem bark fiber can be used in industrial fields such as textiles, and can be made into high-quality ropes, cloth, etc., with characteristics such as high strength and durability. In terms of building materials, its fiber characteristics can also be used to develop new composite materials. From the perspective of seeds, rich in nutrients such as protein and oil, industrial hemp seeds can be processed into food, health products or used to extract edible oil. In addition, industrial hemp also has certain application prospects in the medical field. Its extracts such as cannabidiol (CBD) have been studied for the treatment of some diseases, such as epilepsy, pain, inflammation, etc., but related medical applications have strict regulatory regulations and approval processes in different countries and regions.

[0003] The patent network announcement number CN 219024447 U discloses an industrial hemp crushing device with a protective structure, including a body, a crushing box, an insulating box and a water storage chamber, a feed box is installed on the top of the crushing box, and an insulating box is installed on the outer wall of the feed box. The utility model can prevent the industrial hemp crushing device from splashing out hemp debris when crushing industrial hemp by installing a cover plate and an insulating box. Pressing the switch button, the electromagnet electrically connected to it is powered off and loses its magnetism, the cover plate is bounced up by the rebound force of the torsion spring, the spring rebound drives the second insulating plate to move upward, the insulating block drives the first conductive sheet to contact the resistor, the power module transmits current to the motor through the resistor, the current received by the motor becomes smaller, the motor speed slows down, the crushing speed of the industrial hemp crushing device also slows down, and the probability of hemp debris being ejected from the crushing device is reduced, thereby avoiding the user from being injured by the splashed hemp debris when putting industrial hemp into the industrial hemp crushing device.

[0004] The applicant believes that it has the following disadvantages: the industrial hemp crushing device with a protective structure does not have the function of screening the industrial hemp after crushing it, which results in impurities, such as hidden soil, lumps of stone, small metal fragments, etc., still mixed in the industrial hemp, which is likely to seriously affect the purity and quality of the product. Therefore, improvement is needed. Summary of the invention

[0005] The purpose of the present invention is to provide an industrial hemp crushing device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an industrial hemp crushing device, comprising a vertical plate, a universal wheel is fixedly connected to the bottom of the vertical plate, a material receiving piece is fixedly connected to the surface of the vertical plate, a screening mechanism is arranged on the top of the vertical plate, a fixing piece is arranged on the top of the screening mechanism, and a crushing mechanism is arranged on the surface of the fixing piece.

[0007] The screening mechanism includes a screening plate, which is arranged on the top of the material receiving piece, a positioning block is fixedly connected to the right side of the screening plate, a second positioning rod is fixedly connected to the top of the positioning block, the surface of the second positioning rod is rotatably connected to the support arm, the side of the support arm facing away from the second positioning rod is rotatably connected to the first positioning rod, the bottom of the first positioning rod is fixedly connected to a rotating disk, the inner ring of the rotating disk is fixedly connected to a first vertical rod, the surface of the first vertical rod is fixedly connected to a first bevel gear, the surface of the first bevel gear is meshed with a second bevel gear, the inner ring of the second bevel gear is fixedly connected to the second vertical rod, and the surface of the second vertical rod is rotatably connected to a support piece.

[0008] Preferably, the surface of the second vertical rod is transmission connected to a pulley group, and the side of the pulley group facing away from the second vertical rod is transmission connected to a rotating rod, and the rotating rod and the second vertical rod are on the same horizontal plane. Under the ingenious linkage formed by the pulley group, the second vertical rod is also driven to start rotating, and the second bevel gear and the first bevel gear connected thereto also rotate synchronously like an activated gear chain.

[0009] Preferably, a second flat gear is fixedly connected to the left side of the rotating rod, a first flat gear is meshed with the surface of the second flat gear, the first flat gear and the second flat gear are arranged on the left side of the pulley group, and the rotation of the output shaft gives the first flat gear and the second flat gear the power to rotate, and the two rotate synchronously like tacit dancers.

[0010] Preferably, the surface of the rotating rod is rotatably connected to a second fixed frame, the second vertical rod is arranged in the second fixed frame, and the second fixed frame is vertically arranged. The rotating rod can be supported and fixed by the arranged second fixed frame to prevent the rotating rod from tilting during rotation.

[0011] Preferably, the surface of the first vertical rod is rotatably connected to the first fixing frame, the first fixing frame extends downward, a connecting plate is fixedly connected to the left side of the first fixing frame, support plates are fixedly connected to both sides of the connecting plate, the support plates are fixedly connected to the top of the vertical plate, and the fixing piece is fixedly connected to the top of the support plate, and the first fixing frame is set to simultaneously support and fix the first vertical rod.

[0012] Preferably, a slide groove is provided in the support plate, a pulley is inserted in the slide groove, and the pulley is rotatably connected to a cross bar at the center, and the cross bars are fixedly connected to both sides of the screen plate. When the screen plate slides back and forth, the pulley slides inside the slide rail provided inside the support plate, thereby supporting the screen plate.

[0013] Preferably, the crushing mechanism includes a material box, the first fixed frame is fixedly connected to the right side surface of the material box, the rotating rod is rotatably connected to the surface of the material box, the material box is fixedly connected between two fixing parts, a barrel is fixedly connected to the left side of the material box, a feed hopper is fixedly connected to the top of the barrel, the feed hopper is conical in design, the barrel is connected to both sides, an auger is arranged in the barrel, a first motor is fixedly connected to the left side of the auger, the first motor is fixedly connected to the left side of the barrel, and when the auger rotates, it is like a smart dragon, and its blades push the industrial hemp raw materials in an orderly manner, gradually realizing the stable and efficient output of the industrial hemp raw materials, and smoothly transporting them to the inside of the grinding cylinder.

[0014] Preferably, a grinding cylinder is fixedly connected to the material box, and a crushing piece is provided on the inner wall of the grinding cylinder. The crushing piece is slightly fitted with the inner wall of the grinding cylinder. The crushing piece is arranged on the right side of the auger, and the purpose of crushing the industrial hemp is achieved through the arranged crushing piece.

[0015] Preferably, the inner ring of the crushing member is fixedly connected to an output shaft, the right side of the output shaft is fixedly connected to a second motor, the bottom of the second motor is fixedly connected to a support seat, and the second fixing frame is fixedly connected to the surface of the support seat. The second motor can be supported by the support seat to prevent the second motor from shaking violently during operation.

[0016] Preferably, the grinding cylinder is designed in its original shape, and filter holes of uniform size are opened inside the grinding cylinder. The industrial hemp is faced with the strong action of the crushing parts at the inner wall of the grinding cylinder. The crushing parts are like precision crushers, which grind the industrial hemp in great detail under high-speed rotation.

[0017] Compared with the prior art, the present invention provides an industrial hemp crushing device, which has the following beneficial effects: 1. The industrial hemp crushing device can realize the rapid screening of industrial hemp, and filter out all the impurities, such as hidden soil, blocky stones, small metal fragments, etc. If these impurities are mixed into the subsequent industrial hemp products, it is very likely to seriously affect the purity and quality of the products. After this screening, the quality of industrial hemp is effectively improved.

[0018] 2. The industrial hemp crushing device, the industrial hemp on the inner wall of the grinding cylinder faces the strong action of the crushing parts. The crushing parts are like precision grinders. Under high-speed rotation, the industrial hemp is finely ground without missing any fiber tissue, which effectively improves the grinding effect of the industrial hemp and breaks it into smaller and more uniform granular substances.

[0019] 3. The industrial hemp crushing device, after screening, the high-quality industrial hemp is like selected treasures, which fall into the inside of the receiving part in an orderly manner, perfectly realizing the purpose of collecting industrial hemp and laying a solid foundation for subsequent further processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 labor: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic oblique view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the screening mechanism of the present invention; Figure 4 It is a partial structural schematic diagram of the screening mechanism of the present invention; Figure 5 It is a partial oblique view of the structure of the screening mechanism of the present invention; Figure 6 This is a schematic diagram of the crushing mechanism of the present invention; Figure 7 It is a cross-sectional schematic diagram of the crushing mechanism of the present invention; Figure 8 This is a schematic diagram of the separation of the crushing mechanism of the present invention; Fig. 9 It is a schematic cross-sectional oblique view of the crushing mechanism of the present invention.

[0021] In the figure: 1, vertical plate; 2, screening mechanism; 21, rotating rod; 22, first flat gear; 23, support member; 24, support arm; 25, rotating disk; 26, first fixed frame; 27, first bevel gear; 28, second bevel gear; 29, second fixed frame; 201, second flat gear; 202, support plate; 203, connecting plate; 204, screening plate; 205, pulley; 206, first positioning rod; 207, positioning block; 208, second positioning rod; 209, second vertical rod; 2011, first vertical rod; 2012, cross rod; 3, crushing mechanism; 31, first motor; 32, feed hopper; 33, material box; 34, barrel; 35, support seat; 36, second motor; 37, grinding barrel; 38, crushing member; 39, auger; 4, fixing member; 5, material receiving member. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The present invention provides a technical solution: Embodiment 1: Combination Figure 1-2 to Figure 3-5 An industrial hemp crushing device includes a vertical plate 1, a universal wheel is fixedly connected to the bottom of the vertical plate 1, a material receiving piece 5 is fixedly connected to the surface of the vertical plate 1, a screening mechanism 2 is arranged on the top of the vertical plate 1, a fixing piece 4 is arranged on the top of the screening mechanism 2, and a crushing mechanism 3 is arranged on the surface of the fixing piece 4.

[0024] The screening mechanism 2 includes a screening plate 204, which is arranged on the top of the material receiving member 5. A positioning block 207 is fixedly connected to the right side of the screening plate 204, a second positioning rod 208 is fixedly connected to the top of the positioning block 207, the surface of the second positioning rod 208 is rotatably connected to the support arm 24, the side of the support arm 24 away from the second positioning rod 208 is rotatably connected to the first positioning rod 206, the bottom of the first positioning rod 206 is fixedly connected to the rotating disk 25, the inner ring of the rotating disk 25 is fixedly connected to the first vertical rod 2011, and the surface of the first vertical rod 2011 is fixedly connected to The first bevel gear 27 has a second bevel gear 28 meshing on its surface, the inner ring of the second bevel gear 28 is fixedly connected to a second vertical rod 209, and the surface of the second vertical rod 209 is rotatably connected to a support 23, which can realize rapid screening of industrial hemp, and screen out impurities therein, such as soil, blocky stones, and small metal fragments hidden therein. If these impurities are mixed into subsequent industrial hemp products, it is very likely to seriously affect the purity and quality of the products. After this screening, the quality of the industrial hemp is effectively improved.

[0025] Furthermore, the surface of the second vertical rod 209 is transmission connected to the pulley group, and the side of the pulley group facing away from the second vertical rod 209 is transmission connected to the rotating rod 21. The rotating rod 21 and the second vertical rod 209 are on the same horizontal plane. Under the ingenious linkage formed by the pulley group, the second vertical rod 209 is also driven to start rotating, and the second bevel gear 28 and the first bevel gear 27 connected thereto also rotate synchronously like an activated gear chain.

[0026] Furthermore, a second flat gear 201 is fixedly connected to the left side of the rotating rod 21, and a first flat gear 22 is meshed with the surface of the second flat gear 201. The first flat gear 22 and the second flat gear 201 are arranged on the left side of the pulley group. The rotation of the output shaft gives the first flat gear 22 and the second flat gear 201 the power to rotate, and the two rotate synchronously like tacit dancers.

[0027] Furthermore, the surface of the rotating rod 21 is rotatably connected to a second fixing frame 29, and the second vertical rod 209 is arranged in the second fixing frame 29. The second fixing frame 29 is vertically arranged. The second fixing frame 29 can support and fix the rotating rod 21 to avoid the rotating rod 21 from tilting during the rotation process.

[0028] Furthermore, the surface of the first vertical rod 2011 is rotatably connected to the first fixing frame 26, the first fixing frame 26 extends downward, the left side of the first fixing frame 26 is fixedly connected to a connecting plate 203, both sides of the connecting plate 203 are fixedly connected to support plates 202, the support plate 202 is fixedly connected to the top of the vertical plate 1, and the fixing member 4 is fixedly connected to the top of the support plate 202. By setting the first fixing frame 26, the first vertical rod 2011 is supported and fixed at the same time.

[0029] Furthermore, a slide groove is provided in the support plate 202, and a pulley 205 is inserted in the slide groove. The pulley 205 is rotatably connected to a cross bar 2012 at the center, and the cross bars 2012 are fixedly connected to both sides of the screening plate 204. When the screening plate 204 slides back and forth, the pulley 205 slides inside the slide rail provided inside the support plate 202, thereby supporting the screening plate 204.

[0030] Embodiment 2: See also Figure 6-9 On the basis of the first embodiment, the screening mechanism 2 further comprises a screening plate 204, the screening plate 204 is arranged on the top of the material receiving member 5, a positioning block 207 is fixedly connected to the right side of the screening plate 204, a second positioning rod 208 is fixedly connected to the top of the positioning block 207, the surface of the second positioning rod 208 is rotatably connected to the support arm 24, the side of the support arm 24 away from the second positioning rod 208 is rotatably connected to the first positioning rod 206, the bottom of the first positioning rod 206 is fixedly connected to a rotating disk 25, the inner ring of the rotating disk 25 is fixedly connected to a first vertical rod 2011, the surface of the first vertical rod 2011 is fixedly connected to a first bevel gear 27, the surface of the first bevel gear 27 is meshed with a second bevel gear 28, the inner ring of the second bevel gear 28 is fixedly connected to a second vertical rod 209, and the surface of the second vertical rod 209 is rotatably connected to the support member 23.

[0031] The crushing mechanism 3 includes a material box 33, a first fixed frame 26 fixedly connected to the right side surface of the material box 33, a rotating rod 21 rotatably connected to the surface of the material box 33, the material box 33 is fixedly connected between two fixing parts 4, a barrel 34 is fixedly connected to the left side of the material box 33, a feed hopper 32 is fixedly connected to the top of the barrel 34, the feed hopper 32 is conically designed, the barrel 34 is connected to both sides, an auger 39 is arranged in the barrel 34, a first motor 31 is fixedly connected to the left side of the auger 39, the first motor 31 is fixedly connected to the left side of the barrel 34, and when the auger 39 rotates, it is like a smart dragon, and its blades push the industrial hemp raw materials in an orderly manner, gradually realizing the stable and efficient output of the industrial hemp raw materials, and smoothly transporting them to the inside of the grinding cylinder 37.

[0032] Furthermore, a grinding cylinder 37 is fixedly connected to the material box 33, and a crushing piece 38 is provided on the inner wall of the grinding cylinder 37. The crushing piece 38 is slightly fitted with the inner wall of the grinding cylinder 37. The crushing piece 38 is arranged on the right side of the auger 39. The crushing piece 38 is arranged to crush the industrial hemp.

[0033] Furthermore, the inner ring of the crushing member 38 is fixedly connected to the output shaft, the right side of the output shaft is fixedly connected to the second motor 36, the bottom of the second motor 36 is fixedly connected to the support seat 35, and the second fixed frame 29 is fixedly connected to the surface of the support seat 35. The second motor 36 can be supported by the support seat 35 to prevent the second motor 36 from shaking violently during operation.

[0034] Furthermore, the grinding cylinder 37 is designed in its original shape, and filter holes of uniform size are opened inside the grinding cylinder 37. The industrial hemp is faced with the strong action of the crushing member 38 on the inner wall of the grinding cylinder 37. The crushing member 38 is like a precision crusher, which grinds the industrial hemp in great detail under high-speed rotation.

[0035] In actual operation, when the device is used, first in the processing flow of industrial hemp, the first step is the feeding link, the industrial hemp is accurately placed into the barrel 34 through the feeding hopper 32, and then the first motor 31 is started, and the first motor 31 drives the auger 39 to start rotating. When the auger 39 rotates, it is like a smart dragon, and its blades push the industrial hemp raw materials in an orderly manner, gradually realizing the stable and efficient output of the industrial hemp raw materials, and smoothly transporting them to the inside of the grinding barrel 37; At this time, the second motor 36 is started, and the second motor 36 drives the crushing member 38 to rotate rapidly. The industrial hemp is on the inner wall of the grinding cylinder 37, facing the strong action of the crushing member 38. The crushing member 38 is like a precision crusher. Under high-speed rotation, the industrial hemp is finely ground without missing any fiber tissue, which effectively improves the grinding effect of the industrial hemp and breaks it into finer and more uniform granular substances. The crushed industrial hemp passes through the material box 33 and falls into the inside of the screening plate 204 like a trickle. At the same time, under the linkage operation of the relevant mechanical devices, the output shaft starts to rotate. The rotation of the output shaft gives the first flat gear 22 and the second flat gear 201 the power to rotate. The two rotate synchronously like tacit dancers, and under the ingenious linkage formed by the pulley group, the second vertical rod 209 is also driven to rotate, and the second bevel gear 28 and the first bevel gear 27 connected thereto also rotate synchronously like an activated gear chain, and finally drive the rotating disk 25 to start rotating. When the rotating disk 25 itself rotates rapidly, under the solid support of the support arm 24, the rotating disk 25 is rotated. Under the use, the screening plate 204 begins to vibrate rhythmically. This vibration is like an efficient screening dance, which can realize the rapid screening of industrial hemp and screen out the impurities therein, such as the hidden soil, blocky stones, small metal fragments, etc. If these impurities are mixed into the subsequent industrial hemp products, it is very likely to seriously affect the purity and quality of the products. After this screening, the quality of industrial hemp is effectively improved. Finally, the high-quality industrial hemp after screening is like a treasure that has been screened out, and falls into the inside of the receiving part 5 in an orderly manner, perfectly realizing the purpose of collecting industrial hemp and laying a solid foundation for subsequent further processing.

[0036] 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 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 device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. An industrial hemp crushing device, comprising a vertical plate (1), characterized in that: The bottom of the vertical plate (1) is fixedly connected to a universal wheel, the surface of the vertical plate (1) is fixedly connected to a material receiving member (5), the top of the vertical plate (1) is provided with a screening mechanism (2), the top of the screening mechanism (2) is provided with a fixing member (4), and the surface of the fixing member (4) is provided with a crushing mechanism (3); The screening mechanism (2) comprises a screening plate (204), the screening plate (204) being arranged on the top of the material receiving member (5), a positioning block (207) being fixedly connected to the right side of the screening plate (204), a second positioning rod (208) being fixedly connected to the top of the positioning block (207), a surface of the second positioning rod (208) being rotatably connected to a support arm (24), a side of the support arm (24) facing away from the second positioning rod (208) being rotatably connected to a first positioning rod (206), a bottom of the first positioning rod (206) being fixedly connected to a rotating disk (25), an inner ring of the rotating disk (25) being fixedly connected to a first vertical rod (2011), a surface of the first vertical rod (211) being fixedly connected to a first bevel gear (27), a surface of the first bevel gear (27) being meshed with a second bevel gear (28), an inner ring of the second bevel gear (28) being fixedly connected to a second vertical rod (209), and a surface of the second vertical rod (209) being rotatably connected to a support member (23).

2. The industrial hemp crushing device according to claim 1, characterized in that: The surface of the second vertical rod (209) is transmission-connected to a pulley set, and the side of the pulley set facing away from the second vertical rod (209) is transmission-connected to a rotating rod (21), and the rotating rod (21) and the second vertical rod (209) are located on the same horizontal plane.

3. The industrial hemp crushing device according to claim 2, characterized in that: A second spur gear (201) is fixedly connected to the left side of the rotating rod (21), a first spur gear (22) is meshed on the surface of the second spur gear (201), and the first spur gear (22) and the second spur gear (201) are arranged on the left side of the pulley assembly.

4. The industrial hemp crushing device according to claim 2, characterized in that: The surface of the rotating rod (21) is rotatably connected to a second fixing frame (29), the second vertical rod (209) is arranged in the second fixing frame (29), and the second fixing frame (29) is arranged vertically.

5. The industrial hemp crushing device according to claim 1, characterized in that: The surface of the first vertical rod (2011) is rotatably connected to the first fixing frame (26), the first fixing frame (26) extends downward, a connecting plate (203) is fixedly connected to the left side of the first fixing frame (26), both sides of the connecting plate (203) are fixedly connected to support plates (202), the support plates (202) are fixedly connected to the top of the vertical plate (1), and the fixing member (4) is fixedly connected to the top of the support plate (202).

6. The industrial hemp crushing device according to claim 5, characterized in that: A slide groove is provided in the support plate (202), a pulley (205) is inserted in the slide groove, and the pulley (205) is rotatably connected to a cross bar (2012) at the center, and the cross bars (2012) are fixedly connected to both sides of the screening plate (204).

7. The industrial hemp crushing device according to claim 1, characterized in that: The crushing mechanism (3) comprises a material box (33), the first fixed frame (26) is fixedly connected to the right side surface of the material box (33), the rotating rod (21) is rotatably connected to the surface of the material box (33), the material box (33) is fixedly connected between two fixing members (4), a material barrel (34) is fixedly connected to the left side of the material box (33), a feed hopper (32) is fixedly connected to the top of the material barrel (34), the feed hopper (32) is conically designed, the material barrel (34) is connected to both sides, an auger (39) is arranged in the material barrel (34), a first motor (31) is fixedly connected to the left side of the auger (39), and the first motor (31) is fixedly connected to the left side of the material barrel (34).

8. The industrial hemp crushing device according to claim 7, characterized in that: A grinding cylinder (37) is fixedly connected to the material box (33), and a crushing piece (38) is provided on the inner wall of the grinding cylinder (37). The crushing piece (38) slightly fits the inner wall of the grinding cylinder (37), and the crushing piece (38) is provided on the right side of the auger (39).

9. The industrial hemp crushing device according to claim 8, characterized in that: The inner ring of the crushing member (38) is fixedly connected to an output shaft, the right side of the output shaft is fixedly connected to a second motor (36), the bottom of the second motor (36) is fixedly connected to a support seat (35), and the second fixing frame (29) is fixedly connected to the surface of the support seat (35).

10. The industrial hemp crushing device according to claim 8, characterized in that: The grinding cylinder (37) is designed in its original shape, and filter holes of uniform size are provided inside the grinding cylinder (37).

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