Coarse cereal buckwheat flour milling device

Abstract

The invention relates to the field of flour milling equipment, and discloses a coarse cereal buckwheat flour milling device which comprises a mounting frame, a screening mechanism arranged at the upper end of the mounting frame, a feeding hopper arranged at the upper end of the screening mechanism and used for storing buckwheat particles, and a crushing mechanism arranged in the feeding hopper and used for crushing the buckwheat particles, the power mechanism is arranged at the upper end of the mounting frame and is connected with the screening mechanism and the crushing mechanism; the loosening part is arranged on the feeding hopper, connected with the smashing mechanism and used for loosening buckwheat particles in the feeding hopper along with movement of the smashing mechanism, the problems of accumulation and caking of the buckwheat particles in the feeding hopper are effectively solved, the feeding uniformity is guaranteed, and therefore the flour milling efficiency and quality are improved; and through reasonable transmission design of the power mechanism, sufficient power in the crushing and screening process is ensured, and the screening and crushing effects are improved.

Description

Technical Field

[0001] The invention relates to the technical field of flour grinding equipment, in particular to a miscellaneous grain buckwheat flour grinding device. Background Art

[0002] In recent years, research in agriculture, medicine, and food nutrition has shown that buckwheat, especially tartary buckwheat, has the highest nutritional value among all grain crops. It is not only rich in nutrients and has high nutritional value, but also contains a variety of trace elements that other grain crops lack. The market demand is huge, and buckwheat needs to be ground into flour in the production process.

[0003] The existing equipment has the following disadvantages: the traditional buckwheat grinding device is prone to blockage during the grinding process, especially in the feed hopper, where buckwheat particles easily accumulate and clump, resulting in uneven feeding and affecting the grinding efficiency and quality.

[0004] Therefore, the present application proposes a miscellaneous grain buckwheat flour grinding device to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a miscellaneous grain buckwheat flour grinding device to solve the problem that the above-mentioned traditional buckwheat flour grinding device is prone to blockage during the flour grinding process, especially in the feed hopper part, buckwheat particles are prone to accumulation and agglomeration, resulting in uneven feeding and affecting the flour grinding efficiency and quality.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for grinding buckwheat flour from grains, comprising a mounting frame, a screening mechanism disposed on an upper end of the mounting frame for separating buckwheat hulls from flour, a feed hopper disposed on an upper end of the screening mechanism for storing buckwheat grains, and a crushing mechanism disposed within the feed hopper for crushing the buckwheat grains, and further comprising:

[0007] a power mechanism, disposed at the upper end of the mounting frame and connected to the screening mechanism and the crushing mechanism, for crushing and screening the buckwheat raw material;

[0008] The loosening member is arranged on the feed hopper and connected to the crushing mechanism, and moves together with the crushing mechanism to loosen the buckwheat particles inside the feed hopper.

[0009] Among them, the power mechanism includes a motor arranged at the upper end of the mounting frame, a rotating shaft arranged at the power output end of the motor, a connecting member arranged on the rotating shaft, and a conveying shaft passing through the screening mechanism and connected to the connecting member. A protective plate for protecting the connecting member is provided on the mounting frame.

[0010] Wherein, the connecting member includes a first transmission wheel sleeved on the rotating shaft, a second transmission wheel sleeved on the conveying shaft, and a belt sleeved on the first transmission wheel and the second transmission wheel.

[0011] The crushing mechanism includes a transmission member arranged on the conveying shaft, a crushing shaft arranged in the feed hopper and connected to the transmission member, and a crushing knife arranged at the upper end of the crushing shaft and located inside the feed hopper for crushing buckwheat particles. The upper end of the crushing knife is provided with a conical tip.

[0012] In which, the transmission part includes a fixed rod arranged on the screening mechanism, a protective box arranged on the fixed rod and sleeved on the conveying shaft, a first gear sleeved on the conveying shaft and a second gear sleeved on the lower end of the crushing shaft, the first gear is meshed and connected with the second gear, the crushing shaft is passed through the protective box, and the diameter of the first gear is larger than the diameter of the second gear.

[0013] The loosening member includes a steering member arranged on the feed hopper and connected to the crushing shaft, a pushing member arranged on the steering member, and a cleaning member arranged on the pushing member for loosening the buckwheat particles in the feed hopper, and the top of the cleaning member is located above the crushing knife.

[0014] In which, the steering member includes a third gear sleeved on the crushing shaft, a fixed bracket arranged on the feed hopper, a mounting shaft arranged on the fixed bracket, a fourth gear sleeved on the mounting shaft and a connecting shaft arranged on the side of the fourth gear away from the fixed bracket. The third gear is meshed and connected with the fourth gear, and the connecting shaft passes through the feed hopper.

[0015] Wherein, a conical protective cover for protecting the third gear and the fourth gear is provided at a position above the crushing shaft.

[0016] Wherein, the pushing member includes a rotating disk arranged on the side of the connecting shaft located outside the feed hopper, a mounting rod arranged on the side of the rotating disk away from the connecting shaft, a rotating rod sleeved on the mounting rod and a mounting block arranged at the upper end of the rotating rod, and the mounting rod is eccentrically arranged on the rotating disk.

[0017] Among them, the cleaning part includes a fixed block arranged on the outside of the feed hopper, a limiting ring arranged on the side of the fixed block away from the feed hopper, a lifting rod arranged at the upper end of the mounting block and passing through the limiting ring, and a loosening plate arranged at the upper end of the lifting rod and located inside the feed hopper. The lifting rod passes through the feed hopper, and a groove is opened on the feed hopper for the lifting rod to move.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention realizes an integrated design by integrating the screening mechanism, the crushing mechanism and the power mechanism, simplifies the overall structure and improves the working efficiency. By setting the loose parts, the accumulation and agglomeration problems of buckwheat particles in the feed hopper are effectively solved, and the uniformity of the feed is ensured, thereby improving the grinding efficiency and quality. The power mechanism ensures sufficient power for the crushing and screening processes through reasonable transmission design, thereby improving the screening and crushing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention;

[0021] Figure 2 This is a schematic structural diagram of the rear side of an embodiment of the present invention;

[0022] Figure 3 This is a schematic side view of the structure of one embodiment of the present invention;

[0023] Figure 4 It is a schematic structural diagram of an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of a top view of the structure of one embodiment of the present invention;

[0025] Figure 6 A schematic cross-sectional view of an embodiment of the present invention;

[0026] Figure 7 This is a schematic side-sectional structural diagram of an embodiment of the present invention;

[0027] Figure 8 This is a schematic structural diagram of a power mechanism in one embodiment of the present invention;

[0028] Figure 9 This is a schematic structural diagram of a crushing mechanism in one embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of the connection between the transmission member and the outer box in one embodiment of the present invention;

[0030] Figure 11 This is a schematic structural diagram of a transmission component in one embodiment of the present invention;

[0031] Figure 12 This is a schematic structural diagram of a loose member in one embodiment of the present invention;

[0032] Figure 13 Schematic diagram of the structure of a steering member in one embodiment of the present invention.

[0033] In the figure: 1. Mounting frame; 11. Protective plate; 2. Screening mechanism; 21. Outer box; 22. Discharge plate; 23. Feeding plate; 24. Inner box; 2401. Filter hole; 241. Discharge end; 3. Feed hopper; 31. Conical hopper; 32. Crushing chamber; 33. Feeding pipe; 3301. Through slot; 34. Fixed bracket; 341. Protective cover; 4. Power mechanism; 41. Motor; 42. Rotating shaft; 43. First transmission wheel; 44. Belt; 45. Second transmission wheel; 46. Conveyor shaft; 47. Conveyor blade; 5. Crushing mechanism; 51. Transmission member; 511 , protective box; 512, fixed rod; 513, first gear; 514, second gear; 52, crushing shaft; 53, crushing knife; 531, tip; 54, loosening piece; 541, steering piece; 5411, third gear; 5412, fourth gear; 5413, mounting shaft; 5414, connecting shaft; 542, pushing piece; 5421, rotating disk; 5422, mounting rod; 5423, rotating rod; 5424, mounting block; 543, cleaning piece; 5431, fixed block; 5432, limiting ring; 5433, lifting rod; 5434, loosening plate. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1-13 The present invention provides a technical solution: a device for grinding grains and buckwheat flour, comprising a mounting frame 1, a screening mechanism 2 disposed on the upper end of the mounting frame 1 for separating buckwheat hulls from flour, a feed hopper 3 disposed on the upper end of the screening mechanism 2 for storing buckwheat particles, and a crushing mechanism 5 disposed inside the feed hopper 3 for crushing the buckwheat particles, and further comprising:

[0036] The power mechanism 4 is provided at the upper end of the mounting frame 1 and is connected to the screening mechanism 2 and the crushing mechanism 5, and is used for crushing and screening the buckwheat raw material;

[0037] The loosening member 54 is provided on the feed hopper 3 and connected to the crushing mechanism 5 , and moves together with the crushing mechanism 5 to loosen the buckwheat particles inside the feed hopper 3 .

[0038] It should be noted that, during operation, when buckwheat is ground, the power mechanism 4 is turned on to drive the crushing mechanism 5 to rotate, and then the buckwheat particles are added to the feed hopper 3. The crushing mechanism 5 can crush the buckwheat raw materials that fall into the feed hopper 3, and in the process of the rotation of the crushing mechanism 5, the loosening member 54 is driven to move up and down to clear the buckwheat particles inside the feed hopper 3 up and down, which can reduce the blockage of the feed hopper 3 by buckwheat particles, speed up the feeding speed of buckwheat particles, and thus improve the grinding efficiency of buckwheat. The crushed buckwheat flour and buckwheat shells fall into the interior of the screening mechanism 2 Driven by the power mechanism 4, the components inside the screening mechanism 2 screen the flour and buckwheat hulls to complete the grinding of the buckwheat particles. By integrating the screening mechanism 2, the crushing mechanism 5 and the power mechanism 4, an integrated design is achieved, the overall structure is simplified, and the working efficiency is improved. By providing the loosening member 54, the accumulation and agglomeration problems of buckwheat particles in the feed hopper 3 are effectively solved, the uniformity of the feed is ensured, and thus the grinding efficiency and quality are improved. The power mechanism 4 ensures sufficient power for the crushing and screening processes through a reasonable transmission design, thereby improving the screening and crushing effects.

[0039] In one embodiment, the power mechanism 4 includes a motor 41 arranged at the upper end of the mounting frame 1, a rotating shaft 42 arranged at the power output end of the motor 41, a connecting piece arranged on the rotating shaft 42, and a conveying shaft 46 passing through the screening mechanism 2 and connected to the connecting piece. A protective plate 11 is provided on the mounting frame 1 for protecting the connecting piece.

[0040] This design, see Figure 8 Through the coordinated action of the motor 41, the rotating shaft 42, the connecting member, and the conveying shaft 46, the power mechanism 4 can efficiently and stably drive the screening mechanism 2 to perform screening operations, and can also drive the crushing mechanism 5 to crush the buckwheat particles, thereby realizing efficient application of the power of the power mechanism 4. The provision of the protective plate 11 effectively protects the connecting member from external damage, thereby improving the durability and reliability of the equipment. The design of the entire power mechanism 4 is reasonable, and the various components are tightly connected and coordinated, ensuring smooth and accurate power transmission.

[0041] In one embodiment, the connecting member includes a first transmission wheel 43 sleeved on the rotating shaft 42 , a second transmission wheel 45 sleeved on the conveying shaft 46 , and a belt 44 sleeved on the first transmission wheel 43 and the second transmission wheel 45 .

[0042] This design, see Figure 8Through the combination of the first transmission wheel 43, the second transmission wheel 45 and the belt 44, the power of the rotating shaft 42 can be efficiently transmitted to the conveying shaft 46. This transmission method has a high transmission efficiency and can ensure the smooth operation of the screening mechanism 2.

[0043] In one embodiment, the crushing mechanism 5 includes a transmission member 51 arranged on the conveying shaft 46, a crushing shaft 52 arranged in the feed hopper 3 and connected to the transmission member 51, and a crushing knife 53 arranged at the upper end of the crushing shaft 52 and located inside the feed hopper 3 for crushing buckwheat particles. The upper end of the crushing knife 53 is provided with a conical tip 531.

[0044] This design, see Figure 9 By connecting the transmission member 51 with the pulverizing shaft 52, the pulverizing mechanism 5 can effectively use the power transmitted by the power mechanism 4 to drive the pulverizing blade 53 to efficiently pulverize the buckwheat particles. This design ensures a smooth pulverization process and improves production efficiency. The design of the pulverizing blade 53 allows the buckwheat particles to be fully pulverized to the required fineness. In particular, the conical tip 531 at the upper end of the pulverizing blade 53 can disperse the buckwheat particles that fall into the feed hopper 3, allowing the buckwheat particles to slide onto the blade head of the pulverizing blade 53 for sufficient pulverization, thereby ensuring the quality of the pulverized buckwheat flour. The overall design of the pulverizing mechanism 5 is compact, and the various components are tightly connected, which not only reduces the footprint but also improves the stability and reliability of the equipment.

[0045] In one embodiment, the transmission member 51 includes a fixed rod 512 arranged on the screening mechanism 2, a protective box 511 arranged on the fixed rod 512 and sleeved on the conveying shaft 46, a first gear 513 sleeved on the conveying shaft 46 and a second gear 514 sleeved on the lower end of the crushing shaft 52, the first gear 513 is meshed with the second gear 514, the crushing shaft 52 is passed through the protective box 511, and the diameter of the first gear 513 is greater than the diameter of the second gear 514.

[0046] This design, see Figure 10-11Through the meshing connection between the first gear 513 and the second gear 514, the transmission member 51 can stably transmit the power of the conveying shaft 46 to the crushing shaft 52, thereby driving the crushing blade 53 to efficiently crush the buckwheat particles. This gear transmission method has the advantages of high transmission efficiency, compact structure, and accurate transmission ratio. Since the diameter of the first gear 513 is larger than that of the second gear 514, this design realizes a speed-increasing transmission, so that the rotation speed of the crushing shaft 52 is higher than that of the conveying shaft 46, thereby improving the crushing efficiency. This speed-increasing design helps to fully crush the buckwheat particles and ensure the crushing quality. The design of the protective box 511 not only protects the gear transmission system from the intrusion of external impurities, but also prevents the operator from accidentally contacting the rotating parts during operation of the equipment, thereby improving the safety of the equipment. The fixing rod 512 is fixed inside the outer box 21, which can enhance the overall stability of the transmission member 51 and ensure the stability and reliability of the gear transmission.

[0047] In a specific embodiment, the screening mechanism 2 includes an outer box 21 provided at the upper end of the mounting frame 1, an inner box 24 provided inside the outer box 21, a discharge plate 22 provided obliquely on the side of the outer box 21 away from the power mechanism 4, and a discharge plate 23 provided at the lower end of the outer box 21. The inner box 24 is provided with a filter hole 2401 for screening buckwheat flour. The inner box 24 is provided with a discharge end 241 located above the discharge plate 22. A conveying shaft 46 passes through the inner box 24 and the outer box 21 and is provided with a conveying blade 47 at a position inside the inner box 24.

[0048] The feed hopper 3 includes a feed pipe 33 provided at the upper end of the inner box 24 and connected to the inner box 24 , a crushing bin 32 provided at the upper end of the feed pipe 33 , and a conical bucket 31 provided at the upper end of the crushing bin 32 . The crushing knife 53 is located inside the crushing bin 32 .

[0049] This design, see Figure 1-7The design of the conical bucket 31 helps to guide the material to be evenly dispersed into the crushing bin 32, reducing the risk of blockage. When the buckwheat particles fall into the crushing bin 32, they are evenly crushed into the set particle size by the crushing knife 53 inside the crushing bin 32. Then the crushed buckwheat hulls and flour fall into the discharge pipe 33 and fall into the inner box 24. The conveying blades 47 on the conveying shaft 46 help to promote the movement of the crushed buckwheat hulls and buckwheat flour in the inner box 24, preventing material accumulation and ensuring the continuous screening process. The filter holes 24 on the inner box 24 01, can efficiently sieve buckwheat flour and larger particles or impurities, the sieved flour is discharged and collected through the discharge plate 23, and the buckwheat husks are discharged from the discharge end 241 to the inclined discharge plate 22, which can conveniently collect and process the flour and husks, realize the automation and efficiency of the production process, ensure the rapid separation of flour, improve production efficiency, and ensure the purity of flour. By adjusting the size of the sieve hole and the rotation speed of the crushing knife 53, it can meet the production needs of flour of different qualities, and has strong adaptability and flexibility.

[0050] In one embodiment, the loosening member 54 includes a steering member 541 provided on the feed hopper 3 and connected to the crushing shaft 52, a pushing member 542 provided on the steering member 541, and a cleaning member 543 provided on the pushing member 542 for loosening the buckwheat particles in the feed hopper 3, wherein the top of the cleaning member 543 is located above the crushing knife 53.

[0051] This design, see Figure 6-7 ,as well as Figure 9-13 The loosening member 54 can effectively loosen the buckwheat particles in the feed hopper 3 through the coordinated action of the steering member 541, the pushing member 542 and the cleaning member 543. This design prevents the material from being blocked in the feed hopper 3 and ensures that the material can smoothly enter the crushing bin 32 for crushing. Since the top of the cleaning member 543 is located above the crushing knife 53, it can pre-treat the material before crushing, making the material looser, thereby improving the crushing efficiency of the crushing knife 53, which helps to reduce the resistance during the crushing process and makes the crushing more uniform and efficient.

[0052] In one embodiment, the steering member 541 includes a third gear 5411 sleeved on the crushing shaft 52, a fixed bracket 34 provided on the feed hopper 3, an installation shaft 5413 provided on the fixed bracket 34, a fourth gear 5412 sleeved on the installation shaft 5413, and a connecting shaft 5414 provided on the side of the fourth gear 5412 away from the fixed bracket 34. The third gear 5411 is meshed and connected with the fourth gear 5412, the connecting shaft 5414 passes through the feed hopper 3, and the crushing shaft 52 is rotatably passed through the fixed bracket 34.

[0053] This design, see Figure 9 ,as well as Figure 12 Through the meshing connection between the third gear 5411 and the fourth gear 5412, the steering member 541 can achieve efficient and stable power transmission. This gear transmission method has the advantages of accurate transmission ratio and high transmission efficiency, thereby ensuring the operating efficiency and stability of the entire device. The design of the steering member 541 makes full use of the space. Through the meshing of the third gear 5411 mounted on the crushing shaft 52 and the fourth gear 5412 arranged on the fixed bracket 34, the steering transmission of power is achieved, while making the overall structure more compact and reducing the footprint of the device. The connecting shaft 5414 can drive the pushing member 542 to move up and down, thereby driving the cleaning member 543 to loosen the material in the conical bucket 31.

[0054] In one embodiment, a conical protective cover 341 for protecting the third gear 5411 and the fourth gear 5412 is provided at a position above the third gear 5411 and the fourth gear 5412 on the grinding shaft 52 .

[0055] This design, see Figure 13 The protective cover 341 can effectively prevent external debris or dust from entering the gear meshing area, protecting the third gear 5411 and the fourth gear 5412 from pollution and damage, which helps to reduce gear wear, extend its service life, and ensure the stability and reliability of the transmission.

[0056] In one embodiment, the pushing member 542 includes a rotating disk 5421 arranged on the side of the connecting shaft 5414 located outside the feed hopper 3, a mounting rod 5422 arranged on the side of the rotating disk 5421 away from the connecting shaft 5414, a rotating rod 5423 sleeved on the mounting rod 5422, and a mounting block 5424 arranged at the upper end of the rotating rod 5423, and the mounting rod 5422 is eccentrically arranged on the rotating disk 5421.

[0057] This design, see Figure 9 ,as well as Figure 12 Since the mounting rod 5422 is eccentrically arranged on the rotating disk 5421, the connecting shaft 5414 can drive the cleaning member 543 to move up and down through the rotating rod 5423 during the process of rotating the rotating disk 5421, so that the cleaning member 543 loosens the buckwheat particles in the conical bucket 31 up and down, thereby more effectively pushing the material into the crushing bin 32, improving the feeding efficiency, and thus improving the production efficiency of the entire device.

[0058] In one embodiment, the cleaning member 543 includes a fixed block 5431 arranged on the outside of the feed hopper 3, a limiting ring 5432 arranged on the side of the fixed block 5431 away from the feed hopper 3, a lifting rod 5433 arranged at the upper end of the mounting block 5424 and passing through the limiting ring 5432, and a loosening plate 5434 arranged at the upper end of the lifting rod 5433 and located inside the feed hopper 3. The lifting rod 5433 passes through the feed hopper 3, and a through groove 3301 is opened on the feed hopper 3 for the lifting rod 5433 to move.

[0059] This design, see Figure 9 ,as well as Figure 12 Driven by the mounting block 5424, the lifting rod 5433 moves up and down inside the limiting ring 5432, thereby driving the loosening plate 5434 to move up and down inside the conical bucket 31, effectively loosening the buckwheat particles inside the conical bucket 31, preventing the material from being blocked and accumulated during the feeding process, and ensuring that the material can enter the next processing link evenly and smoothly. Since the cleaning piece 543 can continuously loosen the material, the material can pass through the conical bucket 31 and enter the crushing bin 32 more quickly, thereby improving the processing efficiency of the entire device.

[0060] In addition, if there are descriptions of "first," "second," etc. in the embodiments, such descriptions are for descriptive purposes only and should not be understood as indicating or implying the relative importance of the description or implicitly indicating the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features.

Claims

1. A device for grinding buckwheat flour from grains, comprising a mounting frame (1), a screening mechanism (2) arranged at the upper end of the mounting frame (1) for separating buckwheat hulls from flour, a feed hopper (3) arranged at the upper end of the screening mechanism (2) for storing buckwheat particles, and a crushing mechanism (5) arranged inside the feed hopper (3) for crushing the buckwheat particles, characterized in that: Also includes: A power mechanism (4) is provided at the upper end of the mounting frame (1) and is connected to the screening mechanism (2) and the crushing mechanism (5), and is used for crushing and screening the buckwheat raw material; A loosening member (54) is provided on the feed hopper (3) and is connected to the crushing mechanism (5), and moves together with the crushing mechanism (5) to loosen the buckwheat particles inside the feed hopper (3).

2. The device for grinding grains and buckwheat flour according to claim 1, characterized in that: The power mechanism (4) comprises a motor (41) arranged at the upper end of the mounting frame (1), a rotating shaft (42) arranged at the power output end of the motor (41), a connecting piece arranged on the rotating shaft (42), and a conveying shaft (46) passing through the screening mechanism (2) and connected to the connecting piece. A protective plate (11) for protecting the connecting piece is provided on the mounting frame (1).

3. The device for grinding grains and buckwheat flour according to claim 2, characterized in that: The connecting member comprises a first transmission wheel (43) sleeved on the rotating shaft (42), a second transmission wheel (45) sleeved on the conveying shaft (46), and a belt (44) sleeved on the first transmission wheel (43) and the second transmission wheel (45).

4. The device for grinding grains and buckwheat flour according to claim 2, characterized in that: The pulverizing mechanism (5) comprises a transmission member (51) arranged on the conveying shaft (46), a pulverizing shaft (52) arranged in the feed hopper (3) and connected to the transmission member (51), and a pulverizing knife (53) arranged at the upper end of the pulverizing shaft (52) and located inside the feed hopper (3) for pulverizing buckwheat particles, wherein the upper end of the pulverizing knife (53) is provided with a conical tip (531).

5. The device for grinding grains and buckwheat flour according to claim 4, characterized in that: The transmission member (51) comprises a fixed rod (512) arranged on the screening mechanism (2), a protective box (511) arranged on the fixed rod (512) and sleeved on the conveying shaft (46), a first gear (513) sleeved on the conveying shaft (46), and a second gear (514) sleeved on the lower end of the crushing shaft (52), the first gear (513) being meshed and connected with the second gear (514), the crushing shaft (52) being passed through the protective box (511), and the diameter of the first gear (513) being larger than the diameter of the second gear (514).

6. The device for grinding grains and buckwheat flour according to claim 4, characterized in that: The loosening member (54) comprises a steering member (541) arranged on the feed hopper (3) and connected to the crushing shaft (52), a pushing member (542) arranged on the steering member (541), and a cleaning member (543) arranged on the pushing member (542) for loosening the buckwheat particles in the feed hopper (3), wherein the top of the cleaning member (543) is located above the crushing knife (53).

7. The device for grinding grains and buckwheat flour according to claim 6, characterized in that: The steering member (541) comprises a third gear (5411) sleeved on the pulverizing shaft (52), a fixed bracket (34) arranged on the feed hopper (3), a mounting shaft (5413) arranged on the fixed bracket (34), a fourth gear (5412) sleeved on the mounting shaft (5413), and a connecting shaft (5414) arranged on a side of the fourth gear (5412) away from the fixed bracket (34); the third gear (5411) is meshedly connected with the fourth gear (5412), and the connecting shaft (5414) passes through the feed hopper (3).

8. The device for grinding grains and buckwheat flour according to claim 7, characterized in that: The crushing shaft (52) is provided with a conical protective cover (341) at a position above the third gear (5411) and the fourth gear (5412) for protecting the third gear (5411) and the fourth gear (5412).

9. The device for grinding grains and buckwheat flour according to claim 7, characterized in that: The pushing member (542) includes a rotating disk (5421) arranged on the side of the connecting shaft (5414) located outside the feed hopper (3), a mounting rod (5422) arranged on the side of the rotating disk (5421) away from the connecting shaft (5414), a rotating rod (5423) sleeved on the mounting rod (5422), and a mounting block (5424) arranged on the upper end of the rotating rod (5423), wherein the mounting rod (5422) is eccentrically arranged on the rotating disk (5421).

10. The device for grinding grains and buckwheat flour according to claim 9, characterized in that: The cleaning member (543) includes a fixed block (5431) arranged on the outside of the feed hopper (3), a limiting ring (5432) arranged on the side of the fixed block (5431) away from the feed hopper (3), a lifting rod (5433) arranged on the upper end of the mounting block (5424) and passing through the limiting ring (5432), and a loosening plate (5434) arranged on the upper end of the lifting rod (5433) and located inside the feed hopper (3), the lifting rod (5433) passes through the feed hopper (3), and the feed hopper (3) is provided with a through groove (3301) for the lifting rod (5433) to move.

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