A feed crushing and mixing device for agricultural breeding

Abstract

The present invention relates to the field of feed crushing technology, and in particular to a feed crushing and mixing device for agricultural breeding, comprising an upper body and a lower body, wherein a sieve plate is movably provided in the upper body, a mounting cavity is provided in the lower body, a first motor is fixedly connected to the lower body, a first gear driven by the first motor is rotatably installed in the mounting cavity, a crushing portion driven by the first gear is provided in the upper body, an air supply pipe connected to a hot air blower is fixedly connected to the upper body, two grinding rollers are provided in the lower body, and a driving portion for driving the grinding rollers to rotate is fixedly provided on the side wall of the lower body. The present invention integrates hot air treatment and ultraviolet sterilization technology into the corn crushing process in stages. The two processes form a synergistic effect through sequential connection. The hot air treatment not only creates the optimal material state for subsequent ultraviolet sterilization, but its thermal effect can also activate the permeability of the corn skin, thereby improving the sterilization efficiency of ultraviolet rays by more than 38%.

Description

Technical Field

[0001] The present invention relates to the technical field of feed crushing, and in particular to a feed crushing and mixing device for agricultural breeding. Background Art

[0002] Extruded feed requires raw materials with a certain fineness. Crushed corn is easier to expand under high temperature and high pressure, forming a porous structure, which improves digestibility and palatability. At the same time, uncrushed corn may not be completely digested and excreted from the body, resulting in energy waste. Therefore, corn needs to be crushed during the process of being processed into feed.

[0003] The existing feed crusher has the following problems in the process of crushing corn:

[0004] During the corn crushing process, conventional processes typically utilize ultraviolet sterilization devices for surface disinfection. However, due to its inherent physical limitations, UV irradiation technology primarily acts on the surface of the material, making it difficult to achieve deep sterilization of the complex three-dimensional structure of corn tissue after crushing. Furthermore, the increased surface area and interparticle gaps in the crushed corn material significantly increase its bulk volume by approximately 40-60%. This change in physical form not only reduces the uniformity of UV irradiation coverage, but also, due to the increased thickness of the material layer, causes the light quantum energy to decay exponentially during penetration, ultimately reducing the sterilization efficiency to less than 30% of its initial value. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem of low ultraviolet sterilization effect in the material crushing process in the prior art, and to propose a feed crushing and mixing device for agricultural breeding.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A feed crushing and mixing device for agricultural breeding comprises an upper body and a lower body, wherein a sieve plate is movably provided in the upper body, and an installation cavity is provided in the lower body, wherein a first motor is fixedly connected to the lower body, and a first gear driven by the first motor is rotatably installed in the installation cavity, wherein a crushing part driven by the first gear is provided in the upper body, and an air supply pipe connected to a hot air blower is fixedly connected to the upper body;

[0008] Two grinding rollers are arranged in the lower body, and a driving part for driving the grinding rollers to rotate is fixedly arranged on the side wall of the lower body.

[0009] Preferably, a conical discharge port is provided at the connection between the upper body and the lower body, and a four-diamond-shaped discharge port is provided at the bottom end of the lower body.

[0010] Preferably, a refrigerator is fixedly provided at the connection between the upper body and the lower body.

[0011] Preferably, a guide plate is fixedly connected to the screen plate, the guide plate is a hollow structure, a movable plate is slidably mounted in the guide plate, and a plurality of first springs are fixedly connected between the movable plate and the guide plate.

[0012] Preferably, a mounting plate is fixedly connected to the upper body, a support rod fixedly connected to the screen plate is slidably connected to the mounting plate, a material guide plate fixedly connected to the support rod is slidably connected to the inner wall of the upper body, the longitudinal section of the material guide plate is a triangular surface structure, and a second spring is fixedly connected between the material guide plate and the mounting plate.

[0013] Preferably, the crushing part includes:

[0014] a second gear meshingly connected to the first gear, the second gear being rotatably mounted in the mounting cavity;

[0015] a mounting shaft, the mounting shaft being fixedly connected to the second gear and rotatably mounted on the top wall of the upper body;

[0016] A contact plate, the contact plate is fixedly sleeved on the mounting shaft, and the longitudinal section of the contact plate is a right-angled trapezoidal structure;

[0017] a driven ring gear meshingly connected to the second gear, the driven ring gear being rotatably mounted on the inner wall of the mounting cavity;

[0018] a connecting rod, the connecting rod being fixedly connected to the driven ring gear;

[0019] A drive shaft, the drive shaft being fixedly connected to the connecting rod and extending to a position above the sieve plate;

[0020] A crushing blade is fixedly sleeved on the driving shaft.

[0021] Preferably, the grinding roller is alternately provided with left-handed and right-handed threads, and a smooth transition section is provided at the junction of the left-handed and right-handed threads.

[0022] Preferably, an ultraviolet sterilization lamp corresponding to the grinding roller is fixedly provided at the four-diamond-shaped discharge port of the lower body.

[0023] Preferably, the driving unit includes:

[0024] a mounting bracket, the mounting bracket being fixedly connected to the side wall of the lower body;

[0025] a second motor, the second motor being fixedly mounted on the mounting bracket;

[0026] a first roller and a second roller, wherein the first roller is fixedly connected to one of the grinding rollers, the first roller is driven to rotate by the second motor, and the second roller is fixedly connected to the other grinding roller;

[0027] a third gear and a fourth gear, wherein the third gear is fixedly mounted on the first roller shaft, and the fourth gear is fixedly mounted on the second roller shaft;

[0028] The first fan blade and the second fan blade are fixedly sleeved on the first roller shaft, and the second fan blade is fixedly sleeved on the second roller shaft.

[0029] Preferably, a portion of the lower body corresponding to the grinding roller is provided with a plurality of ventilation holes.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] 1. The present invention introduces hot air treatment technology into the corn crushing process. The high-temperature hot air can promote the lysis of microbial cell walls and protein denaturation and inactivation. The continuous heat convection reduces the water activity of corn kernels, effectively blocking the metabolic pathways of residual microorganisms. At the same time, the hot air will change direction after contacting the dynamic corn, thereby ensuring that corn of all particle sizes can obtain multiple heat exchange cycles, which helps to improve the overall sterilization uniformity.

[0032] 2. The present invention uses a resistance plate to drive the screen plate to generate oscillation, so that the corn layer forms a dynamic gap structure, which helps to improve the penetration efficiency of hot air. At the same time, it realizes the separation of broken particles in the process of enhanced heat and mass transfer, which helps to reduce the residual rate of corn.

[0033] 3. The present invention adopts a refrigerator to implement active cooling treatment on the high-temperature airflow introduced from the upper body into the lower body, so that the temperature of the air contacting the surface of the grinding roller can be controlled in a lower range, which helps to suppress thermal fatigue of the metal material and thus extend the service life of the grinding roller. At the same time, when the grinding roller rotates, it will drive the first fan blade and the second fan blade to rotate, and use the fan blades to draw out the air inside the lower body, which helps to reduce the temperature of the space where the grinding roller is located and further suppress the thermal fatigue of the metal material.

[0034] 4. The present invention is provided with a bidirectional thread on the grinding roller, so as to promote the staggered movement of the material on the roller surface, prolong the residence time of the material in the grinding area, ensure more sufficient grinding, and at the same time prolong the irradiation time of the ultraviolet sterilization lamp on the corn kernels, which helps to improve the disinfection effect of the ultraviolet sterilization lamp on the corn kernels. At the same time, the thread grooves in different directions generate multi-directional shear force, effectively crushing the material particles, improving the fineness and uniformity. The bidirectional spiral grinding roller design is adopted, and the bidirectional thread structure forms an alternatingly distributed material diversion channel on the roller surface, which promotes the corn particles to produce a composite motion trajectory in the three-dimensional space in the grinding area. While improving the material residence time, it also improves the uniformity of ultraviolet irradiation through dynamic displacement. The asymmetric shear field formed by the different-direction threads can produce multi-dimensional mechanical force synergy, realize layered crushing and precise grading of particles, and the extended grinding path is combined with the synchronous increase of ultraviolet irradiation time to further improve the disinfection effect of the ultraviolet sterilization lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure proposed by the present invention;

[0036] Figure 2 For the present invention Figure 1 Decomposition diagram of Figure 1 ;

[0037] Figure 3 For the present invention Figure 2 A schematic diagram of the partially enlarged structure of part A;

[0038] Figure 4 For the present invention Figure 1 Decomposition diagram of Figure 2 ;

[0039] Figure 5 This is a schematic diagram of the connection structure between the driving unit and the grinding roller proposed in the present invention;

[0040] Figure 6 This is a schematic diagram of the lower body structure proposed by the present invention;

[0041] Figure 7 This is a schematic diagram of the connection structure of the screen plate, the first motor, the first gear and the crushing part proposed in the present invention;

[0042] Figure 8 For the present invention Figure 7 Decomposition diagram of Figure 3 .

[0043] In the figure: 1. Upper body; 2. Lower body; 3. Screen plate; 4. Mounting chamber; 5. First motor; 6. First gear; 7. Air pipe; 8. Grinding roller; 9. Guide plate; 10. Movable plate; 11. First spring; 12. Mounting plate; 13. Support rod; 14. Guide plate; 15. Second gear; 16. Mounting shaft; 17. Contact plate; 18. Driven gear ring; 19. Connecting rod; 20. Drive shaft; 21. Crushing blade; 22. Ultraviolet sterilization lamp; 23. Mounting bracket; 24. Second motor; 25. First roller; 26. Second roller; 27. Third gear; 28. Fourth gear; 29. ​​First fan blade; 30. Second fan blade; 31. Refrigerator; 32. Second spring. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] Reference Figures 1-8 A feed crushing and mixing device for agricultural breeding includes an upper body 1 and a lower body 2. A conical discharge port is provided at the connection between the upper body 1 and the lower body 2. The conical feed port is located at the center of the upper body 1. The central feeding causes the corn particles to fall symmetrically along the axis of the device under the action of gravity, avoiding the unbalanced load caused by unilateral accumulation. A four-diamond-shaped discharge port is provided at the bottom end of the lower body 2. The conical discharge port and the four-diamond-shaped discharge port are equipped with solenoid valves for controlling opening and closing.

[0046] A sieve plate 3 is movably provided in the upper body 1, and a guide plate 9 is fixedly connected to the sieve plate 3. The guide plate 9 is a hollow structure, and a movable plate 10 is slidably sleeved in the guide plate 9. The movement trajectory of the sieve plate 3 is limited by the sliding connection between the guide plate 9 and the movable plate 10, so as to ensure the stability of the sieve plate 3 during movement. A plurality of first springs 11 are fixedly connected between the movable plate 10 and the guide plate 9, and a mounting plate 12 is fixedly connected to the upper body 1. A support rod 13 fixedly connected to the sieve plate 3 is slidably connected to the mounting plate 12. The other end of the sieve plate 3 is guided and limited by the sliding connection between the support rod 13 and the mounting plate 12, so as to further ensure the stability of the sieve plate 3 during movement. To ensure the stability of the plate 3 during movement, a guide plate 14 fixedly connected to the support rod 13 is slidably connected to the inner wall of the upper body 1. The longitudinal section of the guide plate 14 is a triangular structure. A second spring 32 is fixedly connected between the guide plate 14 and the mounting plate 12. The corn kernels are guided by the guide plate 14 to avoid contact between the corn kernels and the second spring 32, thereby preventing the second spring 32 from being affected by the corn kernels and unable to contract. When the sieve plate 3 rises, it will squeeze the first spring 11, and when the sieve plate 3 descends, it will squeeze the second spring 32, so that the elastic force of the first spring 11 and the second spring 32 can buffer and protect the rising and falling movement of the sieve plate 3.

[0047] The lower body 2 is provided with an installation cavity 4, to which a first motor 5 is fixedly connected. A first gear 6 driven by the first motor 5 is rotatably installed in the installation cavity 4. The upper body 1 is provided with a crushing part driven by the first gear 6. The crushing part includes a second gear 15 meshing with the first gear 6, a mounting shaft 16, a contact plate 17, a driven ring gear 18 meshing with the second gear 15, a connecting rod 19, a drive shaft 20 and a crushing blade 21. The components are arranged as follows:

[0048] The second gear 15 is rotatably mounted in the mounting cavity 4, and the mounting shaft 16 is fixedly connected to the second gear 15 and extends to the upper body 1. The contact plate 17 is fixedly sleeved on the mounting shaft 16. The longitudinal section of the contact plate 17 is a right-angled trapezoidal structure. It should be noted that the upper surface of the contact plate 17 always contacts the bottom end of the screen plate 3. Therefore, the screen plate 3 will move up and down every time the contact plate 17 rotates 360 degrees, so that the screen plate 3 changes from static to dynamic during operation. The dynamic screen plate 3 makes the material evenly distributed on the screen surface and moves quickly through vibration or rotation, reducing Accumulation and "dead corners" are avoided to prevent the sieve holes of the screen plate 3 from being blocked due to the stillness of the material. Vibration or centrifugal force causes small particles to sink faster and contact the screen surface, while large particles float up, accelerating the stratification process. The driven gear ring 18 is rotatably installed in the installation cavity 4. When it is necessary to adjust the rotation speed of the driven gear ring 18 or the second gear 15, the first gear 6 and the second gear 15 of the required specifications can be replaced. The connecting rod 19 is fixedly connected to the driven gear ring 18, and the drive shaft 20 is fixedly connected to the connecting rod 19. The drive shaft 20 extends to the position above the screen plate 3, and the crushing blade 21 is fixedly sleeved on the drive shaft 20.

[0049] An air pipe 7 connected to the hot air blower is fixedly connected to the upper body 1, and two grinding rollers 8 are provided in the lower body 2. It should be noted that the air pipe 7 needs to dehumidify the internal space of the upper body 1 in advance before the corn is crushed, so that the corn is in a low humidity environment during processing. During the corn crushing process, the hot air destroys the microbial cell structure through high temperature and inhibits its activity in combination with the low humidity environment. At the same time, the dry hot air can reduce the water activity of the corn, further inhibiting the reproduction of residual microorganisms, and corn with lower humidity is more easily ground by the grinding roller 8. The wind speed and contact time of the hot air need to be determined according to the amount of corn and the optimal value through experiments.

[0050] The grinding roller 8 is alternately arranged with left-handed and right-handed threads, and a smooth transition section is provided at the junction of the left-handed and right-handed threads to form a bidirectional thread groove. The groove bottom is designed to be "U-shaped" to avoid flat-bottom material accumulation. The spiral pattern guides the corn to move axially along the roller surface, prolonging the residence time of the material in the crushing area and improving the crushing uniformity. It should be noted that: a guide long groove is provided on the lower body 2, and a guide slider is slidably mounted in the guide long groove. A cleaning ball located in the bidirectional thread groove is fixedly connected to the guide slider. The smooth transition section is used to prevent the cleaning ball from getting stuck during movement. The setting of the bidirectional thread groove allows the cleaning ball to move smoothly on the grinding roller 8. During unidirectional rotation, horizontal reciprocating motion can be achieved, thereby preventing corn kernels from becoming stuck in the bidirectional spiral grooves. A cooler 31 is fixedly installed at the connection between the upper body 1 and the lower body 2. The cooler 31 reduces the temperature of the airflow introduced from the upper body 1 to the lower body 2, thereby preventing the grinding roller 8 from being affected by hot air and causing the operating temperature to rise rapidly, thereby ensuring the normal operation of the grinding roller 8. An ultraviolet sterilization lamp 22 corresponding to the grinding roller 8 is installed at the lower end of the lower body 2. The ultraviolet sterilization lamp 22 disinfects and sterilizes the corn kernels through ultraviolet radiation. At the same time, under the guidance of the bidirectional spiral grooves, the corn kernels form a scientific and reasonable diversion mechanism. This precisely designed guide structure not only effectively avoids the shielding effect of corn kernel accumulation on the ultraviolet sterilization lamp 22, but more importantly, it achieves multi-dimensional irradiation in three-dimensional space through an optimized motion trajectory, so that each corn kernel can receive uniform sterilization treatment from the ultraviolet sterilization lamp 22 during the continuous conveying and grinding process.

[0051] A driving unit for driving the grinding roller 8 to rotate is fixedly provided on the side wall of the lower body 2. The driving unit includes a mounting bracket 23, a second motor 24, a first roller shaft 25, a second roller shaft 26, a third gear 27, a fourth gear 28, a first fan blade 29, and a second fan blade 30. The components are arranged as follows:

[0052] The mounting bracket 23 is fixedly connected to the side wall of the lower body 2, the second motor 24 is fixedly mounted on the mounting bracket 23, the first roller 25 is fixedly connected to one of the grinding rollers 8, the first roller 25 is driven to rotate by the second motor 24, the second roller 26 is fixedly connected to the other grinding roller 8, the third gear 27 is fixedly mounted on the first roller 25, and the fourth gear 28 is fixedly mounted on the second roller 26. It should be noted that the transmission ratio of the third gear 27 and the fourth gear 28 needs to be selected according to actual conditions. The third gear 27 and the fourth gear 28 with different specifications will cause the rotation speeds of the two grinding rollers 8 to differ and form a speed gradient. The material is stretched, torn and sheared between the roller gap. At the same time, the reverse rotation forces the material to flip repeatedly between the two rollers, extending the stop time. The retention time can improve the crushing uniformity and further extend the irradiation time of the ultraviolet sterilization lamp 22 on the corn kernels. The speed difference disperses the instantaneous impact load, reduces the peak power demand of the motor, and reduces the comprehensive energy consumption. The two grinding rollers 8 move in opposite directions to disperse the wear area, avoid excessive loss on one side, and extend the service life of the grinding roller 8. The first fan blade 29 is fixedly mounted on the first roller shaft 25, and the second fan blade 30 is fixedly mounted on the second roller shaft 26. The part of the lower body 2 corresponding to the grinding roller 8 is provided with a plurality of ventilation holes, and the air flow inside the lower body 2 is discharged through the first fan blade 29 and the second fan blade 30, so as to reduce the temperature of the internal space of the lower body 2, thereby ensuring that the operating temperature of the grinding roller 8 is not too high, which helps to suppress thermal fatigue of the metal material.

[0053] The present invention can be explained through the following operation mode:

[0054] The hot air is introduced to the position above the sieve plate 3 through the air delivery pipe 7 to preheat the interior space of the upper body 1 and start the refrigerator 31 at the same time;

[0055] The corn is put into the upper body 1 through the conical discharge port and falls onto the screen plate 3. The first motor 5 is started to drive the first gear 6 to rotate, the first gear 6 drives the second gear 15 to rotate, the second gear 15 drives the mounting shaft 16 to rotate, and the mounting shaft 16 drives the contact plate 17 to rotate. The upper surface of the contact plate 17 is tilted, so that the screen plate 3 oscillates in the vertical direction, and the movable plate 10 moves vertically in the guide plate 9. The movable plate 10 squeezes the first spring 11 during the movement, and the screen plate 3 drives the support rod 13. The support rod 13 drives the guide plate 14 to squeeze the second spring 32, so that the corn changes from static to dynamic, thereby accelerating the screening effect of the screen plate 3 on the corn and forming a dynamic gap structure in the corn layer. The second gear 15 drives the driven gear ring 18 to rotate, the driven gear ring 18 drives the connecting rod 19 to rotate, the connecting rod 19 drives the drive shaft 20 to rotate, and the drive shaft 20 drives the crushing blade 21 to rotate, thereby crushing the corn and continuously heating the corn by hot air.

[0056] The second motor 24 is started to drive the first roller 25 to rotate, the first roller 25 drives the third gear 27 to rotate, the third gear 27 drives the fourth gear 28 to rotate, and the fourth gear 28 drives the second roller 26 to rotate. The two grinding rollers 8 are driven to rotate by the first roller 25 and the second roller 26, and the corn kernels are crushed and ground by the two grinding rollers 8. At the same time, the ultraviolet sterilization lamp 22 is started to irradiate the corn in the bidirectional threaded groove of the grinding roller 8 with ultraviolet light. The first roller 25 and the second roller 26 drive the first fan blade 29 and the second fan blade 30 to rotate to discharge the air in the lower body 2 through the ventilation holes, thereby reducing the internal temperature of the lower body 2. Finally, the crushed corn is discharged through the four-diamond platform-shaped discharge port under the action of gravity.

[0057] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A feed crushing and mixing device for agricultural breeding, comprising an upper body (1) and a lower body (2), characterized in that: A sieve plate (3) is movably provided in the upper body (1), a mounting cavity (4) is provided on the lower body (2), a first motor (5) is fixedly connected to the lower body (2), a first gear (6) driven by the first motor (5) is rotatably installed in the mounting cavity (4), a crushing portion driven by the first gear (6) is provided in the upper body (1), an air delivery pipe (7) connected to a hot air blower is fixedly connected to the upper body (1), and a refrigerator (31) is fixedly provided at the connection between the upper body (1) and the lower body (2); Two grinding rollers (8) are provided in the lower body (2). Left-handed and right-handed threads are alternately arranged on the grinding rollers (8), and a smooth transition section is provided at the junction of the left-handed and right-handed threads to form a bidirectional thread groove. The groove bottom is designed to be "U-shaped". A guide long groove is provided on the lower body (2). A guide slider is slidably mounted in the guide long groove. A cleaning ball located in the bidirectional thread groove is fixedly connected to the guide slider. The smooth transition section prevents the cleaning ball from getting stuck during movement. The bidirectional thread groove is provided so that the cleaning ball can achieve horizontal reciprocating motion when the grinding roller (8) rotates unidirectionally. A driving unit for driving the grinding roller (8) to rotate is fixedly provided on the side wall of the lower body (2).

2. The feed crushing and mixing device for agricultural breeding according to claim 1, characterized in that: A conical discharge port is provided at the connection between the upper body (1) and the lower body (2), and a four-diamond-shaped discharge port is provided at the bottom end of the lower body (2).

3. The feed crushing and mixing device for agricultural breeding according to claim 1, characterized in that: A guide plate (9) is fixedly connected to the screen plate (3), the guide plate (9) is a hollow structure, a movable plate (10) is slidably mounted in the guide plate (9), and a plurality of first springs (11) are fixedly connected between the movable plate (10) and the guide plate (9).

4. The feed crushing and mixing device for agricultural breeding according to claim 1, characterized in that: A mounting plate (12) is fixedly connected to the upper body (1), a support rod (13) fixedly connected to the screen plate (3) is slidably connected to the mounting plate (12), a guide plate (14) fixedly connected to the support rod (13) is slidably connected to the inner wall of the upper body (1), the guide plate (14) having a triangular surface structure in longitudinal section, and a second spring (32) fixedly connected between the guide plate (14) and the mounting plate (12).

5. The feed crushing and mixing device for agricultural breeding according to claim 1, characterized in that: The crushing part includes: a second gear (15) meshingly connected to the first gear (6), the second gear (15) being rotatably mounted in the mounting cavity (4); a mounting shaft (16), the mounting shaft (16) being fixedly connected to the second gear (15) and rotatably mounted on the inner top wall of the upper body (1); A contact plate (17), the contact plate (17) is fixedly sleeved on the mounting shaft (16), and the longitudinal section of the contact plate (17) is a right-angled trapezoidal structure; a driven ring gear (18) meshingly connected to the second gear (15), the driven ring gear (18) being rotatably mounted on the inner wall of the mounting cavity (4); a connecting rod (19), the connecting rod (19) being fixedly connected to the driven ring gear (18); A drive shaft (20), the drive shaft (20) being fixedly connected to the connecting rod (19), and the drive shaft (20) extending to a position above the sieve plate (3); A crushing blade (21), wherein the crushing blade (21) is fixedly sleeved on the driving shaft (20).

6. The feed crushing and mixing device for agricultural breeding according to claim 2, characterized in that: An ultraviolet sterilization lamp (22) corresponding to the grinding roller (8) is fixedly provided at the four-diamond-shaped discharge port of the lower machine body (2).

7. The feed crushing and mixing device for agricultural breeding according to claim 1, characterized in that: The driving unit includes: A mounting bracket (23), the mounting bracket (23) being fixedly connected to a side wall of the lower body (2); a second motor (24), the second motor (24) being fixedly mounted on the mounting bracket (23); a first roller (25) and a second roller (26), wherein the first roller (25) is fixedly connected to one of the grinding rollers (8), the first roller (25) is driven to rotate by the second motor (24), and the second roller (26) is fixedly connected to the other grinding roller (8); a third gear (27) and a fourth gear (28), wherein the third gear (27) is fixedly mounted on the first roller (25), and the fourth gear (28) is fixedly mounted on the second roller (26); A first fan blade (29) and a second fan blade (30), wherein the first fan blade (29) is fixedly sleeved on the first roller (25), and the second fan blade (30) is fixedly sleeved on the second roller (26).

8. The feed crushing and mixing device for agricultural breeding according to claim 7, characterized in that: The portion of the lower body (2) corresponding to the grinding roller (8) is provided with a plurality of ventilation holes.

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