A grain raw material grinder

Abstract

The present invention relates to the technical field of feed processing, and specifically provides a grain raw material crusher. The crusher includes a housing assembly, a power motor, and a crushing unit. The housing assembly includes an outer housing and an inner housing. The outer housing is sleeved outside the inner housing, and there is a gap between the outer housing and the inner housing. An air inlet is provided on the inner wall of the inner housing to communicate the interior of the inner housing with the space between the outer housing and the inner housing. The crusher further includes: a suction unit located between the outer housing and the inner housing, for extracting the air in the outer housing to extract the air in the inner housing and at the feed inlet on the inner housing; a filtering unit disposed in the outer housing at the position of the air inlet. By providing the suction unit and the filtering unit, the present invention causes an inward airflow to be generated at the feed inlet of the crusher, so that the dust or powder generated when the grain raw material is put in and the grain raw material is crushed is squeezed into the filtering unit, thereby preventing the dust or powder from escaping.

Description

Technical Field

[0001] The present invention relates to the technical field of feed processing, and in particular to a grain raw material crusher. Background Art

[0002] Feed is the general term for the food of all animals raised. Generally, feed mainly refers to the food of animals raised in agriculture or animal husbandry, including more than a dozen varieties of feed raw materials such as soybeans, soybean meal, corn, fish meal, amino acids, miscellaneous meal, whey powder, oils and fats, meat and bone meal, grains, and feed additives.

[0003] Currently, when processing feed, it is necessary to use grain raw materials such as soybeans and corn. When processing feed, a grain raw material crusher is used to crush the grain raw materials. When the grain raw materials are crushed, it is found that a large amount of dust will be generated during the current crushing process of the grain raw materials. For example, when pouring raw materials into the crusher, the dust carried by the grain raw materials will raise dust, or the powder generated during crushing will float in the air due to vibration to generate dust. Workers working in a dusty environment for a long time will cause harm to their bodies. For example, pneumoconiosis, which is a type of occupational disease, is mainly caused by working in a dusty environment for a long time.

[0004] For example, a grinding type grain crusher disclosed in a Chinese patent with the publication number "CN107377094A" will emit the crushed dust from the upper feed port when crushing grains. At the same time, the dust generated when pouring grain raw materials will also be raised. Therefore, the present application proposes a grain raw material crusher. Summary of the Invention

[0005] The purpose of the present invention is to provide a grain raw material crusher to solve the problem of dust generation when the current grain raw material crusher crushes grains.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A grain raw material crusher, the crusher includes a housing assembly, a power motor, and a crushing unit. The housing assembly includes a housing and an inner housing. The housing is sleeved outside the inner housing, and there is a gap between the housing and the inner housing. An air inlet is provided on the inner wall of the inner housing to communicate the inside of the inner housing with the gap between the housing and the inner housing. The crusher further includes:

[0008] An air suction unit located between the housing and the inner housing, for extracting air inside the housing, inside the inner housing, and at the feed port on the inner housing;

[0009] A filtering unit provided inside the housing and located at the position of the air inlet.

[0010] Further, the air suction unit includes:

[0011] A shaftless fan blade rotatably connected inside the housing, the shaftless fan blade being of an annular structure, and a plurality of fan blades being arranged on the inner wall of the shaftless fan blade to drive air flow;

[0012] A plurality of magnetic blocks, the magnetic blocks being arranged on the outer wall of the shaftless fan blade and evenly distributed circumferentially around the axis of the shaftless fan blade; and

[0013] A plurality of coils, the coils being arranged on the inner wall of the housing and evenly distributed circumferentially around the axis of the shaftless fan blade.

[0014] Further, there is an annular mounting plate on the inner wall of the housing, annular ball grooves are provided on both the upper and lower sides of the shaftless fan blade, and the suction unit further includes:

[0015] A support ring fixedly connected to the housing, ball grooves are provided on both the support ring and the mounting plate, and both sides of the shaftless fan blade are rotatably connected to the mounting plate and the support ring through balls.

[0016] Further, the crushing unit includes:

[0017] A crushing shaft rotatably connected inside the inner housing, the crushing shaft being connected to a power motor to drive the crushing knife to rotate;

[0018] A crushing knife fixedly connected to the crushing shaft;

[0019] A sieve fixedly connected inside the inner housing, the sieve being located at the bottom of the crushing knife to screen the crushed cereal raw materials.

[0020] Further, the sieve is of a hemispherical structure, and the crushing knife includes:

[0021] A fixed shaft sleeve fixedly connected to the crushing shaft;

[0022] A plurality of scraping plates arranged around the fixed shaft sleeve, the scraping plates being arc-shaped to fit the inner wall of the sieve; and

[0023] A plurality of blades connected between the scraping plates and the fixed shaft sleeve.

[0024] Further, the crusher further includes:

[0025] A shaft stabilizing assembly for stabilizing the rotation of the crushing shaft.

[0026] Further, the shaft stabilizing assembly includes:

[0027] A stabilizing shaft sleeve sleeved outside the crushing shaft, a stabilizing bearing being arranged between the stabilizing shaft sleeve and the crushing shaft;

[0028] A number of stabilizing rods connected between the stabilizing bushing and the inner shell.

[0029] Furthermore, the filtering unit includes:

[0030] A filter net surrounding the outer side of the inner shell, the filter net being an annular cavity, and openings being provided on the inner wall of the filter net to communicate with the air inlet.

[0031] Furthermore, the filtering unit further includes:

[0032] A vibration assembly for driving the filter net to vibrate up and down.

[0033] Furthermore, the vibration assembly includes:

[0034] A central wheel fixedly connected to the crushing shaft;

[0035] A vibration gear ring arranged outside the central wheel, a wavy and annular vibration groove being provided on the outside of the vibration gear ring; and

[0036] A planetary gear located between the central wheel and the vibration gear ring, wherein the central wheel, the vibration gear ring and the planetary gear form a reduction gear train;

[0037] A number of vibration rods fixedly connected to the inner wall of the filter net, the ends of the vibration rods being slidably connected to the vibration groove for driving the filter net to vibrate up and down when the vibration gear ring rotates.

[0038] In summary, the present invention has the following beneficial effects compared with the prior art:

[0039] The grain raw material crusher disclosed in the embodiment of the present invention generates an inward airflow at the feed inlet of the crusher by providing an air suction unit and a filtering unit, so that the dust or powder generated when the grain raw material is put in and crushed is squeezed into the filtering unit, thereby preventing the dust and powder from escaping and purifying the working environment. Description of the Drawings

[0040] Figure 1 It is a schematic structural diagram of the grain raw material crusher disclosed in the embodiment of the present invention.

[0041] Figure 2 is Figure 1 The partial enlarged view at I in

[0042] Figure 3 is Figure 1 The partial enlarged view at II in

[0043] Figure 4 is Figure 1 The partial enlarged view at III in

[0044] Figure 5 The structural schematic diagram of the shaftless fan blade in the grain raw material grinder disclosed in the embodiment of the present invention.

[0045] Figure 6 The structural schematic diagram of the crushing knife in the grain raw material grinder disclosed in the embodiment of the present invention.

[0046] Figure 7 The structural schematic diagram of the vibrating gear ring in the grain raw material grinder disclosed in the embodiment of the present invention.

[0047] Reference numerals:

[0048] 100, housing assembly; 110, housing; 111, air outlet pipe; 112, upper cover; 120, inner housing; 121, feed inlet; 122, discharge outlet; 123, air inlet; 130, support feet;

[0049] 200, power motor;

[0050] 300, crushing unit; 310, sieve; 320, crushing knife; 321, fixed shaft sleeve; 322, blade; 323, scraper; 330, crushing shaft;

[0051] 400, air suction unit; 410, shaftless fan blade; 411, fan blade; 412, magnet slot; 420, magnet; 430, coil; 440, support ring;

[0052] 500, filtering unit; 510, filter screen; 520, vibration assembly; 521, center wheel; 522, vibrating gear ring; 523, planet wheel; 524, vibration rod; 525, bottom support; 526, top support; 527, first fixing rod; 528, vibration groove;

[0053] 600, shaft stabilizing assembly; 610, stabilizing shaft sleeve; 620, stabilizing bearing; 630, stabilizing rod. Detailed implementation manners

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0055] Such as Figure 1As shown, a grain raw material crusher provided by an embodiment of the present invention includes a housing assembly 100, a power motor 200, a crushing unit 300, a suction unit 400, and a filtering unit 500. Among them, the housing assembly 100 includes a housing 110 and an inner housing 120. The housing 110 is sleeved outside the inner housing 120, and there is a gap between the housing 110 and the inner housing 120. An air inlet 123 is provided on the inner wall of the inner housing 120 to communicate the inside of the inner housing 120 with the gap between the housing 110 and the inner housing 120. The suction unit 400 is arranged in the housing 110 to extract the air in the housing 110, inside the inner housing 120, and at the feed inlet 121 on the inner housing 120. The filtering unit 500 is arranged in the housing 110 and at the position of the air inlet 123 for filtering dust. The crushing unit 300 is located inside the inner housing 120 to crush the grain raw materials entering the inner housing 120. The power motor 200 is used to drive the crushing unit 300 to rotate to crush the grain raw materials.

[0056] In this embodiment, before pouring the raw materials, the suction unit 400 located in the housing assembly 100 is turned on. The suction unit 400 extracts the air in the housing 110 and the inner housing 120, creating a negative pressure between the housing 110 and the inner housing 120. The air inside the inner housing 120 enters the gap between the housing 110 and the inner housing 120, and the outside air enters the gap between the housing 110 and the inner housing 120 through the feed inlet 121 and the air inlet 123, causing an air flow flowing into the interior of the housing assembly 100 at the feed inlet 121. When pouring the grain raw materials, the dust generated by the grain raw materials follows the air flow into the gap between the housing 110 and the inner housing 120, and after being filtered by the filtering unit 500, it is intercepted at the filtering unit 500. The air passing through the filtering unit 500 is discharged to the outside by the suction unit 400 after being filtered, thereby reducing the generation of dust when pouring the grain raw materials.

[0057] When the crushing unit 300 is working, the crushing unit 300 crushes the grain raw materials located inside the inner housing 120. The dust generated during the crushing of the grain raw materials will follow the air flow into the filtering unit 500 and be intercepted at the filtering unit 500, thereby preventing the dust generated during the crushing of the grain raw materials from escaping into the external environment.

[0058] As a preferred implementation mode in this embodiment, the outer shell 110 and the inner shell 120 are both cylindrical structures with openings at both ends. A bottom sealing plate is provided on the air outlet pipe 111. The bottom sealing plate is fixedly connected to the bottom opening of the outer shell 110 by bolts. An upper cover 112 is provided at the upper opening of the outer shell 110. The upper cover 112 is detachably connected to the upper opening of the outer shell 110 by bolts or snap fasteners. Among them, a support foot 130 is also fixedly connected to the outer shell 110 to support the outer shell assembly 100. The top sealing plate and the upper cover 112 are both sleeved on the outside of the inner shell 120, and the upper cover 112 and the bottom sealing plate are both hermetically connected to the inner shell 120 through sealing rings;

[0059] In some examples, the support foot 130 is fixedly connected to the bottom of the outer shell 110 by bolts;

[0060] An inclined baffle is provided at the bottom of the inner shell 120. A discharge port 122 is provided at the bottom of the inner shell 120. The discharge port 122 is located at the lowest end of the baffle. The crushed grain raw materials fall to the baffle and slide down from the discharge port 122 under the action of gravity;

[0061] The feed inlet 121 is a flared structure. The feed inlet 121 is fixedly connected to the opening at the top of the inner shell 120. The feed inlet 121 is fixedly connected to the inner shell 120 by bolts. When processing feed, the grain raw materials enter the inner shell 120 through the feed inlet 121.

[0062] In this embodiment, the power motor 200 is located at the bottom of the outer shell assembly 100. The power motor 200 is connected to the crushing unit 300 through a coupling to drive the crushing unit 300 to crush the grain raw materials. The power motor 200 is a conventional brushless motor, and its structure will not be elaborated here.

[0063] As a preferred implementation mode in this embodiment, as Figure 1 , the crushing unit 300 includes a crushing shaft 330 rotatably connected inside the inner shell 120, a crushing knife 320 fixedly connected to the crushing shaft 330, and a screen 310 fixedly connected inside the inner shell 120. The crushing shaft 330 is connected to the power motor 200 to drive the crushing knife 320 to rotate. The screen 310 is located at the bottom of the crushing knife 320 to screen the crushed grain raw materials. Among them, the screen 310 is sleeved on the crushing shaft 330;

[0064] Preferably, in this embodiment, the screen 310 is a hemispherical structure. The screen 310 is fixedly connected to the inner wall of the inner shell 120 by screws, as Figure 6As shown in the figure, the crushing knife 320 includes a fixed shaft sleeve 321 fixedly connected to the crushing shaft 330 and a plurality of scraping plates 323 arranged around the fixed shaft sleeve 321. A plurality of blades 322 are also connected between the scraping plates 323 and the fixed shaft sleeve 321. The scraping plates 323 are arc-shaped to fit the inner wall of the screen 310. Both ends of the blade 322 are respectively connected to the fixed shaft sleeve 321 and the scraping plate 323. A plurality of blades 322 are arranged on each scraping plate 323. For example, in this embodiment, three scraping plates 323 are provided. The scraping plates 323 are evenly distributed around the axis of the fixed shaft sleeve 321 in the circumferential direction. Eight blades 322 are provided on each scraping plate 323, and the blades 322 are arranged at equal intervals between each other;

[0065] When adding the grain raw material, the uncrushed grain raw material falls onto the screen 310. After starting the power motor 200, the power motor 200 drives the crushing shaft 330 to rotate, and the crushing shaft 330 drives the crushing knife 320 to rotate. When the crushing knife 320 rotates, the blade 322 crushes the grain raw material. The grain raw material that meets the particle size requirement falls from the screen 310 to the discharge port 122. The grain raw material that does not meet the requirement is ejected into the air by the scraping plate 323 and then crushed by the blade 322 until the particle size requirement is met;

[0066] In this embodiment, the structure of the crushing unit 300 can improve the crushing efficiency and the crushing quality, prevent the generation of larger particles, and enable the crushed grain raw material to meet the particle size requirement.

[0067] As a preferred implementation mode in this embodiment, as Figure 1 、 Figure 2 and Figure 5 shown, the suction unit 400 includes a shaftless fan blade 410, a plurality of magnetic blocks 420 and a plurality of coils 430. The shaftless fan blade 410 is of an annular structure. A plurality of fan blades 411 are arranged on the inner wall of the shaftless fan blade 410 to drive the air flow. The shaftless fan blade 410 is rotatably connected to the inside of the housing 110. The magnetic blocks 420 are arranged on the outer wall of the shaftless fan blade 410 and are evenly distributed around the axis of the shaftless fan blade 410 in the circumferential direction. The coils 430 are arranged on the inner wall of the housing 110 and are evenly distributed around the axis of the shaftless fan blade 410 in the circumferential direction;

[0068] In this embodiment, the coil 430 is used as a stator coil to connect to an external power supply, and the magnet 420 is used as a rotor to drive the shaftless fan blade 410 to rotate. When the suction unit 400 is started, after the coil 430 is energized, a magnetic field is generated to drive the magnet 420 to rotate, thereby driving the shaftless fan blade 410 to rotate. When the shaftless fan blade 410 rotates, the fan blade 411 drives the air to flow, so that the air above the suction unit 400 flows to the lower part of the suction unit 400 and flows out from the air outlet pipe 111;

[0069] As Figure 5 shown, a magnet groove 412 is provided on the outer wall of the shaftless fan blade 410, and the magnet 420 is fixedly connected to the magnet groove 412 by gluing;

[0070] Preferably, as Figure 1 shown, there is an annular mounting plate on the inner wall of the housing 110. Annular ball grooves are provided on both the upper and lower sides of the shaftless fan blade 410. The suction unit 400 further includes a support ring 440 fixedly connected to the housing 110. The support ring 440 is fixedly connected to the housing 110 by screws. Ball grooves are provided on both the support ring 440 and the mounting plate. Both sides of the shaftless fan blade 410 are rotatably connected to the mounting plate and the support ring 440 through balls. The balls not only play a role in limiting the shaftless fan blade 410, but also play a role in reducing the friction of the shaftless fan blade 410;

[0071] The fan blade 411 is fixedly connected to the shaftless fan blade 410 by welding, and the coil 430 is fixedly connected to the inner wall of the housing 110 by gluing.

[0072] As a preferred implementation manner in this embodiment, as Figure 1 shown, the filtering unit 500 includes a filter net 510 surrounding the outer side of the inner housing 120. The filter net 510 is an annular cavity. An opening is provided on the inner wall of the filter net 510. The opening on the filter net 510 is provided at the air inlet 123. Air enters the filter net 510 through the air inlet 123, and the dust and powder contained in the air are intercepted in the filter net 510, thereby playing a role in purifying the air;

[0073] In this embodiment, the filter net 510 includes a skeleton and a filter bag provided outside the skeleton. The material of the filter bag is prior art, such as a PE filter bag;

[0074] As a preferred implementation manner in this embodiment, as Figure 1 and Figure 3As shown, the filtering unit 500 further includes a vibration assembly 520 for driving the filter screen 510 to vibrate up and down to shake off the dust and dirt adsorbed on the filter screen 510;

[0075] Preferably, as Figure 1 and Figure 3 As shown, the vibration assembly 520 includes a central wheel 521 fixedly connected to the crushing shaft 330, a vibration gear ring 522 arranged outside the central wheel 521, and planet gears 523 located between the central wheel 521 and the vibration gear ring 522. The central wheel 521, the vibration gear ring 522, and the planet gears 523 form a reduction gear train. An undulating, annular vibration groove 528 is provided on the outer part of the vibration gear ring 522. A number of vibration rods 524 are also fixedly connected to the inner wall of the filter screen 510 to connect to the vibration groove 528. The end of the vibration rod 524 is slidably connected to the vibration groove 528. When the vibration gear ring 522 rotates, the vibration groove 528 drives the filter screen 510 to vibrate up and down through the vibration rods 524;

[0076] Preferably, as Figure 3 As shown, the central wheel 521 is a straight-tooth gear. The central wheel 521 is fixedly connected to the crushing shaft 330 through a key shaft to rotate with the crushing shaft 330. The filtering unit 500 further includes a bottom support 525 and a top support 526 fixedly connected to the inner wall of the inner shell 120. Both the bottom support 525 and the top support 526 are annular structures. The bottom support 525 and the top support 526 are fixedly connected to the inner wall of the inner shell 120 through a number of first fixing rods 527. One end of the first fixing rod 527 is fixedly connected to the inner wall of the inner shell 120 by welding or bolts. The end of the first fixing rod 527 away from the inner shell 120 is fixedly connected to the bottom support 525 and the top support 526;

[0077] The vibration gear ring 522 is rotatably connected between the bottom support 525 and the top support 526. The planet gears 523 are rotatably connected to the bottom support 525 through gear shafts. When the central wheel 521 rotates, the central wheel 521 drives the vibration gear ring 522 to rotate through the planet gears 523;

[0078] As Figure 7 shown, the vibration groove 528 is provided on the outer wall of the vibration gear ring 522. A straight-tooth structure is provided on the inner wall of the vibration gear ring 522. The central wheel 521 meshes with the planet gears 523, and the planet gears 523 mesh with the vibration gear ring 522;

[0079] Preferably, annular ball grooves are provided on the bottom support 525 and the top support 526, and annular ball grooves are provided on the upper and lower sides of the vibrating gear ring 522. The vibrating gear ring 522 is connected to the bottom support 525 and the top support 526 through balls;

[0080] The vibrating rod 524 passes through the air inlet 123. The air inlet 123 is a kidney-shaped hole, and a plurality of air inlets 123 are provided.

[0081] As a preferred implementation manner in this embodiment, as Figure 1 and Figure 4 shown, the crusher further includes a shaft stabilizing assembly 600 for stabilizing the rotation of the crushing shaft 330;

[0082] In this embodiment, the shaft stabilizing assembly 600 includes a stabilizing sleeve 610 sleeved outside the crushing shaft 330. A stabilizing bearing 620 is provided between the stabilizing sleeve 610 and the crushing shaft 330. The stabilizing sleeve 610 is fixedly connected to the inner wall of the inner shell 120 through a plurality of stabilizing rods 630. The stabilizing rods 630 are fixedly connected to the stabilizing sleeve 610 and the inner shell 120 by bolts or welding.

[0083] It should be noted that in the present invention, the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0084] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grain raw material crusher, the crusher comprising a housing assembly, a power motor, and a crushing unit, characterized in that, The housing assembly includes a housing and an inner housing. The housing is sleeved outside the inner housing, and there is a gap between the housing and the inner housing. An air inlet is provided on the inner wall of the inner housing to communicate the interior of the inner housing with the gap between the housing and the inner housing. A crushing shaft is provided inside the inner housing of the crushing unit, and the crushing shaft is connected to a power motor and rotates therewith. The crusher further includes: An air suction unit located between the housing and the inner housing for extracting air from inside the housing, inside the inner housing, and at the feed inlet on the inner housing; A filtering unit provided inside the housing and at the position of the air inlet. Among them, the filtering unit includes a filter net surrounding the outside of the inner housing and a vibration assembly. The filter net is an annular cavity, and an opening is provided on the inner wall of the filter net to communicate with the air inlet. The vibration assembly is used to drive the filter net to vibrate up and down. The vibration assembly includes: A central wheel fixedly connected to the crushing shaft; A vibration gear ring provided outside the central wheel. A wavy and annular vibration groove is provided on the outside of the vibration gear ring; and A planetary gear located between the central wheel and the vibration gear ring. Among them, the central wheel, the vibration gear ring, and the planetary gear form a reduction gear train; A plurality of vibration rods fixedly connected to the inner wall of the filter net. The ends of the vibration rods are slidably connected to the vibration groove for driving the filter net to vibrate up and down when the vibration gear ring rotates.

2. The grain raw material grinder according to claim 1, characterized in that, The air suction unit includes: A shaftless fan blade rotatably connected to the inside of the housing. The shaftless fan blade is of an annular structure, and a plurality of fan blades are provided on the inner wall of the shaftless fan blade to drive air flow; A plurality of magnetic blocks provided on the outer wall of the shaftless fan blade and evenly distributed circumferentially around the axis of the shaftless fan blade; and A plurality of coils provided on the inner wall of the housing and evenly distributed circumferentially around the axis of the shaftless fan blade.

3. The grain raw material crusher according to claim 2, wherein, There is an annular mounting plate on the inner wall of the housing. Annular ball grooves are provided on both the upper and lower sides of the shaftless fan blade. The air suction unit further includes: A support ring fixedly connected to the housing. Ball grooves are provided on both the support ring and the mounting plate. Both sides of the shaftless fan blade are rotatably connected to the mounting plate and the support ring through balls.

4. The grain raw material crusher according to any one of claims 1-3, characterized in that, The crushing unit further includes: A crushing knife fixedly connected to the crushing shaft. The crushing shaft drives the crushing knife to rotate under the drive of the power motor; A sieve fixedly connected to the inside of the inner housing. The sieve is located at the bottom of the crushing knife to screen the crushed grain raw materials.

5. The cereal raw material grinder according to claim 4, characterized in that, The sieve is of a hemispherical structure. The crushing knife includes: A fixed shaft sleeve fixedly connected to the crushing shaft; A plurality of scraping plates provided around the fixed shaft sleeve. The scraping plates are arc-shaped to fit the inner wall of the sieve; and A plurality of blades connected between the scraping plates and the fixed shaft sleeve.

6. The cereal raw material grinder according to claim 4, characterized in that, The crusher further includes: A shaft stabilizing assembly for stabilizing the rotation of the crushing shaft.

7. The cereal raw material grinder according to claim 6, wherein The shaft stabilizing assembly includes: A stabilizing shaft sleeve sleeved outside the crushing shaft. A stabilizing bearing is provided between the stabilizing shaft sleeve and the crushing shaft; A plurality of stabilizing rods connected between the stabilizing shaft sleeve and the inner housing.

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