CN212651868U

CN212651868U - Coarse cereal pulverizer

Info

Publication number: CN212651868U
Application number: CN202020747223.5U
Authority: CN
Inventors: 付丽红
Original assignee: Shanxi Agricultural University
Current assignee: Shanxi Agricultural University
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2021-03-05
Anticipated expiration: 2030-05-08

Abstract

The utility model provides a coarse cereal grinder, which relates to the technical field of food processing and solves the technical problems that the existing coarse cereal grinder in the prior art has poor grinding effect and can not realize screening, and comprises a frame, a grinding device, a screening device and a grain storage device, wherein the grinding device comprises a grinding bin, a fixed fluted disc and a movable fluted disc are arranged in the grinding bin, the inner wall of the fixed fluted disc is provided with inner teeth, the outer wall of the movable fluted disc is provided with outer teeth, a grinding cavity is formed between the fixed fluted disc and the movable fluted disc, and the grinding bin is provided with a feed inlet and a discharge outlet; the screening device is arranged below the crushing bin, and the grain storage device comprises a first grain storage chamber and a second grain storage chamber which are respectively positioned below the outlet end of the first screening assembly and right below the first screening assembly; the utility model discloses not only smash the effect and show, can realize smashing the categorised screening and the storage of back coarse cereals moreover, convenient to use.

Description

Coarse cereal pulverizer

Technical Field

The utility model relates to a food processing technology field, concretely relates to coarse cereal rubbing crusher.

Background

The five cereals are rice, wheat, soybean, maize, potato class, also be used to the general name as grain crop with the five cereals on being customary usually, in daily life, just can eat after can smashing the five cereals usually, therefore the major apparatus of cereal rubbing crusher as smashing the coarse cereals is indispensable, current cereal rubbing crusher adopts the crushing roller that is provided with a plurality of broken teeth on the surface to come to directly smash grain usually, crushing effect is often relatively poor, and can't filter the coarse cereals granule after current cereal rubbing crusher often smashes, can't satisfy people's daily demand, and in people's daily life, different crowds often like the coarse cereals of different big and small granules, current rubbing crusher often needs further to screen classification after smashing, it is comparatively troublesome to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a coarse cereal grinder to solve the technical problems that the existing coarse cereal grinder in the prior art has poor grinding effect and can not realize screening; the utility model provides a plurality of technical effects that can be produced by the preferred technical scheme in a plurality of technical schemes (the crushing cavity comprises a coarse crushing cavity and a fine crushing cavity, the secondary crushing improves the crushing effect, the movable fluted disc is set to be a conical disc, the fixed fluted disc is set to be a conical disc, the height of the second movable fluted disc is larger than that of the first movable fluted disc, the gap width of the fine crushing cavity is smaller than that of the coarse crushing cavity, the coarse cereals crushing effect is remarkable, the transition cavity is arranged below the fine crushing cavity, the material pushing impeller is arranged in the transition cavity, the discharging of the crushed coarse cereals is convenient, the first screen mesh and the second screen mesh are arranged in a layered mode, the aperture of the first screen mesh is larger than that of the second screen mesh, the coarse cereals with different particles after being crushed can be classified and screened, the first screen mesh and the second screen mesh are arranged in an inclined mode, the discharging is convenient, the screening transmission device can, the screening effect is improved; the screening transmission device comprises a first connecting rod mechanism, a second connecting rod mechanism, a cam mechanism and a transmission main shaft, and is simple in structure and remarkable in transmission effect; the grain storage device comprises a first grain storage box, a second grain storage box and a third grain storage box, and can store coarse cereals and the like in a classified manner); see below for details.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of coarse cereals rubbing crusher, which comprises a frame, be provided with reducing mechanism, sieving mechanism and storage grain device in the frame, wherein: the crushing device comprises a crushing bin, wherein a fixed fluted disc and a movable fluted disc are arranged in the crushing bin, the movable fluted disc is arranged in the fixed fluted disc, inner teeth are arranged on the inner wall of the fixed fluted disc, outer teeth are arranged on the outer wall of the movable fluted disc, a crushing cavity is formed between the fixed fluted disc and the movable fluted disc, the crushing bin is provided with a feeding hole and a discharging hole, and the feeding hole and the discharging hole are communicated with the crushing cavity; the screening device comprises a first screening assembly, the first screening assembly is arranged below the crushing bin, the grain storage device is provided with a first grain storage chamber and a second grain storage chamber, the first grain storage chamber is located below the outlet end of the first screening assembly, and the second grain storage chamber is located below the first screening assembly.

Preferably, the movable toothed disc comprises a first movable toothed disc and a second movable toothed disc, the fixed toothed disc comprises a first fixed toothed disc and a second fixed toothed disc, and the crushing device comprises a crushing drive device, wherein: a coarse crushing chamber is formed between the first movable fluted disc and the first fixed fluted disc, and the feed inlet is communicated with the coarse crushing chamber; a fine crushing chamber is formed between the second movable fluted disc and the second fixed fluted disc and is arranged below the coarse crushing chamber; smash drive arrangement's output connection and be provided with the transmission shaft, the tip of transmission shaft passes arrange in behind the fine crushing cavity in the coarse crushing cavity, first movable fluted disc with the fixed cover of second movable fluted disc is established on the transmission shaft and with the transmission shaft synchronous rotation.

Preferably, first movable fluted disc sets up to first conical disk, evenly be provided with the coarse crushing external tooth on the first conical disk, the inner wall of first fixed fluted disc sets up to the toper, the inner wall of first fixed fluted disc evenly is provided with the coarse crushing internal tooth.

Preferably, the second movable gear disc is set as a second conical disc, fine crushing external teeth are uniformly arranged on the second conical disc, the inner wall of the second fixed gear disc is set as a cone, and fine crushing internal teeth are uniformly arranged on the inner wall of the second fixed gear disc; the axial length of the second movable fluted disc is greater than that of the first movable fluted disc; the distance between the second movable toothed plate and the second fixed toothed plate is smaller than the distance between the first movable toothed plate and the first fixed toothed plate.

Preferably, a transition chamber is arranged below the fine crushing chamber, and the end part of the transmission shaft sequentially passes through the transition chamber and the fine crushing chamber and then is placed in the coarse powder strong chamber; be provided with in the transition cavity and push away the material impeller, push away the material impeller with transition cavity size fit, it establishes to push away the fixed cover of material impeller on the transmission shaft, the discharge gate with the transition cavity is linked together, it can pass through with the coarse cereals after smashing to push away the material impeller the discharge gate propelling movement extremely on the sieving mechanism.

Preferably, the screening apparatus further comprises a second screening component, wherein: the first screening assembly comprises a first screen, the starting end of the first screen is arranged below the discharge hole, and first screen holes are uniformly formed in the first screen; the second screening subassembly includes the second screen cloth, the initiating terminal setting of second screen cloth is in the below of first screen cloth, evenly be provided with the second sieve mesh on the second screen cloth, the aperture of first sieve mesh is greater than the aperture of second sieve mesh.

Preferably, the first screen is obliquely arranged, and the height of the starting end of the first screen is greater than that of the outlet end of the first screen; the second screen is obliquely arranged, and the height of the starting end of the second screen is greater than that of the outlet end of the second screen.

Preferably, the screening apparatus comprises a screening power means and a screening transmission means, wherein: the screening power device is arranged on the rack, and the output end of the screening power device is in transmission connection with the screening transmission device; the first screen and the second screen are in transmission connection with the screening transmission device, and the screening transmission device can convert the rotation of the output end of the screening power device into the reciprocating motion of the first screen and the second screen.

Preferably, the screening transmission comprises a first linkage, a second linkage, a cam linkage and a transmission spindle, wherein: the first screen is in transmission connection with the transmission main shaft through the first connecting rod mechanism; the second screen is in transmission connection with the transmission main shaft through the second connecting rod mechanism; the transmission main shaft is arranged between the first screen and the second screen and is in transmission connection with the screening power device through the cam link mechanism.

Preferably, the grain storage device comprises a first grain storage bin and a second grain storage bin, wherein: a first grain storage chamber is arranged in the first grain storage box, the top of the first grain storage box is communicated with the first grain storage chamber and is provided with a first opening, and the first opening is positioned below the outlet end of the first screen; a second grain storage chamber is arranged in the second grain storage box, the top of the second grain storage box is communicated with the second grain storage chamber and is provided with a second opening, and the second opening is positioned below the second screen; and a third grain storage chamber is arranged in the third grain storage tank, the top of the third grain storage tank is communicated with the third grain storage chamber and is provided with a third opening, and the third opening is positioned below the outlet end of the second screen.

The utility model provides a pair of coarse cereals rubbing crusher has following beneficial effect at least:

the coarse cereal pulverizer comprises a rack, wherein a pulverizing device, a screening device and a grain storage device are arranged on the rack, the rack is used for supporting and mounting other devices, the pulverizing device is used for pulverizing coarse cereals, the screening device can screen coarse cereals with different sizes, and the grain storage device is used for accommodating the pulverized coarse cereals; the crushing device comprises a crushing bin, a fixed fluted disc and a movable fluted disc are arranged in the crushing bin, the movable fluted disc is arranged in the fixed fluted disc, outer teeth are arranged on the outer wall of the movable fluted disc, inner teeth are arranged on the inner wall of the fixed fluted disc, a crushing cavity is formed between the fixed fluted disc and the movable fluted disc, coarse cereals are continuously crushed through the mutual matching of the movable fluted disc and the fixed fluted disc, and the crushing effect is remarkable; the crushing bin is provided with a feeding hole and a discharging hole, the feeding hole and the discharging hole are communicated with the crushing cavity, the feeding hole is used for feeding, and the discharging hole is used for discharging; the screening device is arranged above the crushing bin and comprises a first screening assembly, the grain storage device comprises a first grain storage chamber and a second grain storage chamber, the first grain storage chamber is positioned below the outlet end of the first screening assembly, the second grain storage chamber is positioned below the first screening assembly, and the first screening assembly is used for classifying and screening the crushed coarse cereals and classifying and storing the crushed coarse cereals through the first grain storage chamber and the second grain storage chamber; the utility model discloses not only smash the effect and show, can realize smashing the categorised screening and the classified storage of back coarse cereals moreover, convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the crushing bin of the present invention;

FIG. 3 is a schematic structural view of the movable fluted disc and the pushing impeller of the present invention;

fig. 4 is a schematic structural diagram of the screening device of the present invention.

Reference numerals

1. A frame; 2. a crushing device; 21. a first movable fluted disc; 22. a first fixed fluted disc; 23. a second movable fluted disc; 24. a second fixed fluted disc; 25. a pusher impeller; 26. a drive shaft; 27. a pulverization driving device; 28. a feed inlet; 29. a discharge port; 3. a screening device; 31. a first screening component; 311. a first screen; 32. a second screening component; 321. a second screen; 33. screening a power device; 34. a screening transmission device; 341. a first link mechanism; 342. a second link mechanism; 343. a cam linkage mechanism; 344. a transmission main shaft; 4. a grain storage device; 41. a first grain storage bin; 42. a second grain storage bin; 43. a third grain storage bin; 5. a feed hopper; 6. a discharge hopper.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a coarse cereals rubbing crusher, as shown in fig. 1-fig. 3, coarse cereals rubbing crusher includes frame 1, is provided with reducing mechanism 2, sieving mechanism 3 and stores up grain device 4 in frame 1, wherein: the crushing device 2 comprises a crushing bin, wherein a fixed fluted disc and a movable fluted disc are arranged in the crushing bin, the movable fluted disc is arranged in the fixed fluted disc, inner teeth are arranged on the inner wall of the fixed fluted disc, outer teeth are arranged on the outer wall of the movable fluted disc, and a crushing chamber is formed between the fixed fluted disc and the movable fluted disc; the crushing bin is provided with a feeding hole 28 and a discharging hole 29, the feeding hole 28 and the discharging hole 29 are both communicated with the crushing cavity, the feeding hole 28 is arranged at the top of the crushing bin, the discharging hole 29 is arranged at the bottom of the crushing bin, the feeding hole 28 is communicated with a feeding hopper 5, and the discharging hole 29 is provided with a discharging hopper 6; sieving mechanism 3 includes first screening subassembly 31, and first screening subassembly 31 sets up smash the below in storehouse, store up grain device 4 and include first storage grain cavity and second storage grain cavity, first storage grain cavity is located the below of first screening subassembly 31 exit end with the second stores up the grain cavity and is located first screening subassembly 31 under.

When the coarse cereals to be crushed are placed in the feed hopper 5, the coarse cereals to be crushed enter the crushing cavity from the feed inlet 28, the movable fluted disc rotates, the coarse cereals to be crushed are crushed under the action of the movable fluted disc and the fixed fluted disc, the crushed coarse cereals enter the first screening assembly 31 through the discharge outlet 29 and the discharge hopper 6, the first screening assembly 31 screens the coarse cereals, one part of the screened coarse cereals directly falls into the second grain storage cavity, and the other part of the screened coarse cereals falls into the first grain storage cavity from the outlet end of the first screening assembly 31; the utility model discloses a movable fluted disc and fixed fluted disc are smashed the coarse cereals, smash the effect and are showing, can realize smashing the screening and the classified storage of back coarse cereals through sieving mechanism 3 and storage grain device 4, and convenient to use can satisfy different crowds to the different demands of coarse cereals granule.

As an alternative embodiment, as shown in fig. 2 and 3, the movable toothed disc includes a first movable toothed disc 21 and a second movable toothed disc 23, the fixed toothed disc includes a first fixed toothed disc 22 and a second fixed toothed disc 24, the first fixed toothed disc 22 and the second fixed toothed disc 24 are fixedly disposed on the inner bin wall of the crushing bin, the crushing device 2 includes a crushing driving device 27, and the crushing driving device 27 includes a crushing motor and a speed reducer, wherein: a coarse crushing chamber is formed between the first movable fluted disc 21 and the first fixed fluted disc 22, and the feed inlet 28 is communicated with the coarse crushing chamber; a fine crushing chamber is formed between the second movable fluted disc 23 and the second fixed fluted disc 24, and the fine crushing chamber is arranged below the coarse crushing chamber; the output end of reduction gear is connected and is provided with transmission shaft 26, and transmission shaft 26 is vertical to be set up, and the tip of transmission shaft 26 passes arrange in behind the fine crushing cavity coarse crushing cavity is indoor, and first movable fluted disc 21 and second movable fluted disc 23 fixed cover are established on transmission shaft 26 and are rotated with transmission shaft 26 synchronous.

As an alternative embodiment, as shown in fig. 2 and 3, the first movable toothed disc 21 is provided as a first conical disc on which coarse crushing external teeth are uniformly arranged, the inner wall of the first fixed toothed disc 22 is provided as a cone, and the inner wall of the first fixed toothed disc 22 is uniformly provided with coarse crushing internal teeth.

As an optional implementation manner, the second movable gear plate 23 is provided as a second conical plate, fine crushing external teeth are uniformly arranged on the second conical plate, the inner wall of the second fixed gear plate 24 is provided as a cone, and fine crushing internal teeth are uniformly arranged on the inner wall of the second fixed gear plate 24; the axial length of the second movable toothed disc 23 is greater than the axial length of the first movable toothed disc 21; the distance between the second movable toothed plate 23 and the second fixed toothed plate 24 is smaller than the distance between the first movable toothed plate 21 and the first fixed toothed plate 22.

Optionally, smash the storehouse including thick crushing storehouse and thin crushing storehouse, thick crushing storehouse the interior bulkhead with thin crushing storehouse the interior bulkhead all establishes to set up to the toper, and respectively with first toper dish with second toper dish looks adaptation, the circumference evenly is provided with thick crushing internal tooth on the interior bulkhead of thick crushing storehouse to form first fixed fluted disc, evenly be provided with thin crushing storehouse internal tooth on the interior bulkhead of thin crushing storehouse to form second fixed fluted disc.

As an alternative embodiment, as shown in fig. 2 and 3, a transition chamber is arranged below the fine crushing chamber, and the end of the transmission shaft 26 passes through the transition chamber and the fine crushing chamber in sequence and then is placed in the coarse powder chamber; a pushing impeller 25 is arranged in the transition chamber, the pushing impeller 25 is matched with the transition chamber in size, the pushing impeller 25 is fixedly sleeved on the transmission shaft 26, the discharge port 29 is communicated with the transition chamber, and the pushing impeller 25 can push crushed coarse cereals to the screening device 3 through the discharge port 29; the pushing impeller 25 is provided with at least one blade, and the blade is used for pushing coarse cereals.

As an alternative embodiment, as shown in fig. 4, the screening apparatus 3 further comprises a second screening assembly 32, wherein: the first screening assembly 31 comprises a first screen 311, the starting end of the first screen 311 is arranged below the discharge port 29, and first screen holes are uniformly formed in the first screen 311; the second screening assembly 32 comprises a second screen 321, the starting end of the second screen 321 is arranged below the first screen 311, the second screen 321 is uniformly provided with second screen holes, and the aperture of the first screen hole is larger than that of the second screen hole; and secondary screening can be carried out, and the grains of various sizes can be screened.

Similarly, the screening apparatus 3 may be provided with three or more screening assemblies.

As an alternative embodiment, the first screen 311 is disposed obliquely, and the height of the starting end of the first screen 311 is greater than the height of the outlet end of the first screen 311; the second screen 321 is obliquely arranged, and the height of the starting end of the second screen 321 is greater than that of the outlet end of the second screen 321; the screen cloth slope sets up, the ejection of compact of being convenient for coarse cereals.

As an alternative embodiment, as shown in fig. 4, the screening device 3 comprises a screening power device 33 and a screening transmission 34, wherein: the screening power device 33 is arranged on the frame 1, and the output end of the screening power device 33 is in transmission connection with the screening transmission device 34; the first screen 311 and the second screen 321 are both in transmission connection with the screening transmission device 34, and the screening transmission device 34 can convert the rotation of the output end of the screening power device 33 into the reciprocating motion of the first screen 311 and the second screen 321.

As an alternative embodiment, as shown in fig. 4, the screening transmission 34 includes a first link mechanism 341, a second link mechanism 342, a cam link mechanism 343, and a transmission main shaft 344; the first screen 311 is in transmission connection with a transmission main shaft 344 through a first link mechanism 341; the second screen 321 is in transmission connection with a transmission main shaft 344 through a second link mechanism 342; first link mechanism 341 includes first connecting rod and second connecting rod, first connecting rod with the quantity of second connecting rod all sets up to two, and the bilateral symmetry of first screen cloth 311 can be dismantled and be provided with two first rollers and two second rollers, the rotatable suit of one end of first connecting rod corresponds on the first roller, the other end and the 1 rotatable coupling of frame of first connecting rod, the rotatable suit of one end of second connecting rod corresponds on the second roller, the other end and the transmission main shaft 344 of second connecting rod link to each other, and second link mechanism 342 is similar with first link mechanism 341 structure, dismantles the roller and can realize the change that corresponds the screen cloth, and the structure is more nimble.

The transmission main shaft 344 is arranged between the first screen cloth 311 and the second screen cloth 321 and is in transmission connection with the screening power device 33 through a cam link mechanism, the screening power device 33 is set as a screening motor, the cam link mechanism 343 comprises a cam link and a rotating wheel, the rotating wheel is connected with the output end of the screening power device 33, one end of the cam link is in rotatable connection with the transmission main shaft 344, and the other end of the cam link is in eccentric rotatable connection with the rotating wheel.

As an alternative embodiment, as shown in fig. 1 and 4, the grain storage means 4 comprises a first grain storage tank 41 and a second grain storage tank 42, wherein: a first grain storage chamber is arranged in the first grain storage tank 41, the top of the first grain storage tank 41 is communicated with the first grain storage chamber and is provided with a first opening, and the first opening is positioned below the outlet end of the first screen 311; a second grain storage chamber is arranged in the second grain storage tank 42, the top of the second grain storage tank 42 is communicated with the second grain storage chamber and is provided with a second opening, and the second opening is positioned below the second screen 321; a third grain storage chamber is arranged in the third grain storage tank 43, a third opening is formed in the top of the third grain storage tank 43 and communicated with the third grain storage chamber, and the third opening is located below the outlet end of the second screen 321.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a coarse cereal rubbing crusher, its characterized in that, includes frame (1), be provided with reducing mechanism (2), sieving mechanism (3) and storage grain device (4) in frame (1), wherein:

the crushing device (2) comprises a crushing bin, wherein a fixed fluted disc and a movable fluted disc are arranged in the crushing bin, the movable fluted disc is arranged in the fixed fluted disc, inner teeth are arranged on the inner wall of the fixed fluted disc, outer teeth are arranged on the outer wall of the movable fluted disc, a crushing cavity is formed between the fixed fluted disc and the movable fluted disc, the crushing bin is provided with a feeding hole (28) and a discharging hole (29), and the feeding hole (28) and the discharging hole (29) are communicated with the crushing cavity;

screening device (3) are including first screening subassembly (31), first screening subassembly (31) set up the below in crushing storehouse, store up grain device (4) and be provided with first storage grain cavity and second storage grain cavity, first storage grain cavity is located the below of first screening subassembly (31) exit end, second storage grain cavity is located the below of first screening subassembly (31).

2. A coarse cereal grinder as claimed in claim 1, wherein the movable toothed disc comprises a first movable toothed disc (21) and a second movable toothed disc (23), the fixed toothed disc comprises a first fixed toothed disc (22) and a second fixed toothed disc (24), the grinding device (2) comprises a grinding drive (27), wherein:

a coarse crushing chamber is formed between the first movable fluted disc (21) and the first fixed fluted disc (22), and the feed inlet (28) is communicated with the coarse crushing chamber;

a fine crushing chamber is formed between the second movable fluted disc (23) and the second fixed fluted disc (24), and is arranged below the coarse crushing chamber;

smash drive arrangement (27)'s output connection and be provided with transmission shaft (26), the tip of transmission shaft (26) passes arrange in behind the fine crushing cavity in the coarse crushing cavity, first movable fluted disc (21) with second movable fluted disc (23) fixed cover is established on transmission shaft (26) and with transmission shaft (26) synchronous rotation.

3. The coarse cereal grinder as claimed in claim 2, characterized in that the first movable toothed disc (21) is provided as a first conical disc, on which coarse grinding outer teeth are uniformly arranged, the inner wall of the first fixed toothed disc (22) is provided as a cone, and the inner wall of the first fixed toothed disc (22) is uniformly provided with coarse grinding inner teeth.

4. The coarse cereal grinder as claimed in claim 3, wherein the second movable toothed disc (23) is provided as a second conical disc, fine grinding external teeth are uniformly arranged on the second conical disc, the inner wall of the second fixed toothed disc (24) is provided as a cone, and fine grinding internal teeth are uniformly arranged on the inner wall of the second fixed toothed disc (24);

the axial length of the second movable toothed disc (23) is greater than the axial length of the first movable toothed disc (21);

the distance between the second movable toothed disc (23) and the second fixed toothed disc (24) is smaller than the distance between the first movable toothed disc (21) and the first fixed toothed disc (22).

5. The coarse cereal pulverizer as claimed in claim 2, wherein a transition chamber is arranged below the fine pulverizing chamber, and the end of the transmission shaft (26) passes through the transition chamber and the fine pulverizing chamber in sequence and then is placed in the coarse powder strong chamber;

be provided with in the transition cavity and push away material impeller (25), push away material impeller (25) with transition cavity size fit, it establishes to push away the fixed cover of material impeller (25) on transmission shaft (26), discharge gate (29) with the transition cavity is linked together, it can pass through with the coarse cereals after smashing to push away material impeller (25) discharge gate (29) propelling movement extremely on sieving mechanism (3).

6. A coarse cereal pulverizer as claimed in claim 1, wherein the screening device (3) further comprises a second screening assembly (32), wherein:

the first screening assembly (31) comprises a first screen (311), the starting end of the first screen (311) is arranged below the discharge hole (29), and first screen holes are uniformly formed in the first screen (311);

the second screening component (32) comprises a second screen (321), the starting end of the second screen (321) is arranged below the first screen (311), second screen holes are uniformly formed in the second screen (321), and the aperture of each first screen hole is larger than that of each second screen hole.

7. The coarse cereal pulverizer as claimed in claim 6, wherein the first screen (311) is arranged obliquely, and the height of the starting end of the first screen (311) is greater than the height of the outlet end of the first screen (311);

the second screen (321) is obliquely arranged, and the height of the starting end of the second screen (321) is greater than that of the outlet end of the second screen (321).

8. A coarse cereal pulverizer as claimed in claim 6, wherein the screening device (3) comprises a screening power device (33) and a screening transmission device (34), wherein:

the screening power device (33) is arranged on the rack (1), and the output end of the screening power device (33) is in transmission connection with the screening transmission device (34);

the first screen (311) and the second screen (321) are in transmission connection with the screening transmission device (34), and the screening transmission device (34) can convert the rotation of the output end of the screening power device (33) into the reciprocating motion of the first screen (311) and the second screen (321).

9. A coarse cereal pulverizer as claimed in claim 8, wherein the screening transmission (34) comprises a first linkage (341), a second linkage (342), a cam linkage (343) and a transmission spindle (344), wherein:

the first screen (311) is in transmission connection with the transmission main shaft (344) through the first connecting rod mechanism (341);

the second screen (321) is in transmission connection with the transmission main shaft (344) through the second link mechanism (342);

the transmission main shaft (344) is arranged between the first screen (311) and the second screen (321) and is in transmission connection with the screening power device (33) through the cam link mechanism (343).

10. A coarse cereal pulverizer as claimed in claim 6, wherein the grain storage device (4) comprises a first grain storage bin (41), a second grain storage bin (42) and a third grain storage bin (43), wherein:

a first grain storage chamber is arranged in the first grain storage tank (41), the top of the first grain storage tank (41) is communicated with the first grain storage chamber and is provided with a first opening, and the first opening is positioned below the outlet end of the first screen (311);

a second grain storage chamber is arranged in the second grain storage tank (42), the top of the second grain storage tank (42) is communicated with the second grain storage chamber and is provided with a second opening, and the second opening is positioned below the second screen (321);

a third grain storage chamber is arranged in the third grain storage tank (43), the top of the third grain storage tank (43) is communicated with the third grain storage chamber and is provided with a third opening, and the third opening is positioned below the outlet end of the second screen (321).