A crushing device for corn processing

Abstract

The present invention relates to the technical field of self-priming corn pulverizer equipment, and discloses a pulverizing device for corn processing, including a cyclone dust removal device. One side of the cyclone dust removal device is connected with a discharge pipe. At the bottom end of the inner wall of the discharge pipe, a blocking sieve is fixedly connected. At the bottom of the blocking sieve, a support assembly is provided. In the middle of the support assembly, a closing fan is connected. In the present invention, by providing a ferrite magnet and a sintered neodymium iron boron magnet, when the magnetism of the sintered neodymium iron boron magnet is in a normal state, it will generate a repulsive force with the ferrite magnet, so that the auxiliary fan block extends from the closed groove of the main fan block through the closing block. Since the sintered neodymium iron boron magnet is a strong magnet, the repulsive force is strong, resulting in the auxiliary fan block covering part of the gap between the main fan block and another adjacent main fan block. Thus, the area of the air flow is reduced, so that a large amount of heat cannot be dissipated, ensuring that the temperature can be raised for later drying.

Description

Technical Field

[0001] The present invention relates to the technical field of self-priming corn crushers, and more particularly to a crushing device for corn processing. Background Art

[0002] The main components of a self-priming corn crusher include a self-priming pump, a screen, a crushing grinding disc, a cyclone dust removal device, and a two-phase motor. After the corn kernels are sucked in by the self-priming pump, the corn kernels are crushed by the rotation of the motor-driven crushing grinding disc. During the crushing process, the crushed corn particles are dropped through the material outlet of the cyclone dust removal device by the crushing of the machine and the self-priming pump, thus completing the crushing work of the corn.

[0003] In the existing corn processing, the corn kernels used are all dried corn kernels. However, in the actual operation process, most of the dried corn will have moisture after being crushed. Because it is difficult to remove the moisture in the central part of the corn kernels during the drying process, and in the actual use process, when the crushed corn flour is stored, it is often packed in cloth bags and dried in the sun or dried using equipment to further remove the moisture in the corn flour. However, due to the large amount of moisture contained, the subsequent drying and sun-drying time is long. Therefore, the present invention provides a crushing device for corn processing. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a crushing device for corn processing to solve the problems existing in the above-mentioned background art.

[0005] The present invention provides the following technical solution: A pulverizing device for corn processing, including a cyclone dust removal device. One side of the cyclone dust removal device is connected with a discharge pipe. At the bottom end of the inner wall of the discharge pipe, a blocking sieve is fixedly connected. At the bottom of the blocking sieve, a support assembly is provided. In the middle of the support assembly, a closing fan is connected. The closing fan includes a rotating block. On the outer wall of the rotating block, main fan blades arranged at equal intervals are fixedly connected. On one side of each main fan blade, an auxiliary fan slot is formed. In the middle of the top end and the bottom end of the auxiliary fan slot, a closing slot is formed. In each auxiliary fan slot, an auxiliary fan blade is provided. The auxiliary fan blade is located on one side of the bottom of the auxiliary fan slot and at the closing slot, and a closing block is fixedly connected. On both sides of the closing slot at the bottom of the auxiliary fan slot, sintered neodymium iron boron magnets are fixedly connected. On one side of the sintered neodymium iron boron magnet near the rotating block at the bottom of the auxiliary fan slot, a weak pulling spring is fixedly connected. On the sintered neodymium iron boron magnet of the main fan blade where the auxiliary fan blade is located, a corresponding ferrite magnet is fixedly connected. On the other side of the sintered neodymium iron boron magnet at the bottom of the auxiliary fan slot away from the closing slot, a strong pulling spring is fixedly connected. One end of the strong pulling spring and the weak pulling spring close to the auxiliary fan blade are fixedly connected to the auxiliary fan blade.

[0006] Further, a rotating slot is formed at the bottom end of the rotating block. In the middle of the rotating slot of the rotating block, a clamping slot is formed. At the top end of the rotating slot of the rotating block, an anti - detachment slot is formed. The support assembly includes a support ring. The support ring is fixedly connected with the inner wall of the discharge pipe. In the middle of the support ring, a "person" - shaped support frame is fixedly connected. In the middle of the "person" - shaped support frame, a rotating assembly is fixedly connected. In the middle of the top end of the rotating assembly, a clamping groove is formed. At the top end of the rotating assembly, an anti - detachment block is fixedly connected. The inner ring of a bearing is fixedly connected to the outside of the clamping groove. The outer wall of the bearing is fixedly connected with the clamping slot of the rotating block. The rotating assembly is movably sleeved with the rotating slot of the rotating block. The anti - detachment slot of the rotating block is movably sleeved with the outer wall of the anti - detachment block.

[0007] Further, on the side of the bottom end of the main fan blade away from the auxiliary fan blade, a wind - blocking block is fixedly connected. The slope of the wind - blocking block faces the side of the auxiliary fan blade. On the side of the top end of the main fan blade where the wind - blocking block is located, a brush is fixedly connected.

[0008] Further, the closing slot is arc - shaped.

[0009] Further, the sides of the ferrite magnet and the sintered neodymium iron boron magnet close to each other have the same magnetism, and the length after the strong pulling spring and the weak pulling spring are compressed is equal to the width of the sintered neodymium iron boron magnet and the ferrite magnet plus 5 mm of the gap.

[0010] The technical effects and advantages of the present invention:

[0011] 1. The present invention is provided with ferrite magnets and sintered NdFeB magnets, which is conducive to the normal magnetic state of the sintered NdFeB magnets, which will produce a repulsive effect with the ferrite magnets, so that the auxiliary fan block extends from the closed slot of the main fan block through the closed block. Since the sintered NdFeB magnet is a strong magnet, the repulsive force is strong, so that the auxiliary fan block shields part of the gap between the main fan block and another adjacent main fan block, so that the area of ​​the airflow is reduced, so that the heat cannot be lost in large quantities, ensuring that the temperature can be raised and the subsequent drying can be carried out.

[0012] 2. The windshield block is provided in the present invention, which is conducive to the wind force of the self-priming corn crusher flowing upward to the discharge pipe. When the wind force and the corn crushed particles hit the slope of the windshield block, the vertical airflow will move to the side close to the auxiliary fan block after the impact, so that according to the force decomposition, at this time, due to the large impact force, the generated airflow will flow along the cross-sectional direction of the windshield block, so that the closed fan rotates, so that the rising airflow is located at the bottom of the blocking screen and becomes turbulent, and the part passing through the top of the blocking screen will be turbulent again, so that the weak airflow is not enough to blow the corn powder to the top of the discharge pipe, so that the crushed corn kernels cannot be discharged and fall back to the crushing millstone, so that they can be finer.

[0013] 3. The present invention is provided with a strong pull spring and a weak pull spring, which is beneficial to the weakening of the magnetic force of the sintered NdFeB magnet and the weakening of the repulsive force when the temperature rises. Since the sintered NdFeB magnet is a strong magnet, the weakening of the magnetic force of the sintered NdFeB magnet is a cliff-like weakening, which will cause the strong pull spring to weaken the repulsive force, thereby quickly releasing the pulling force to withdraw the auxiliary fan block. When withdrawing, since the pulling force of the weak pull spring is smaller than that of the strong pull spring, the sintered NdFeB magnet will not collide with the ferrite magnet when pulling. At the same time, since the length of the strong pull spring and the weak pull spring after being compressed is equal to the width of the sintered NdFeB magnet and the ferrite magnet plus the gap of 5mm, the sintered NdFeB magnet and the ferrite magnet cannot collide. At this time, the auxiliary fan block releases the gap blocking between the main fan block and another adjacent main fan block, which can change the rising airflow.

[0014] 4. The present invention is provided with a closed fan, which is beneficial to block the closed fan when the self-priming corn grinder is grinding, so that a large amount of heat cannot flow out, so that the temperature of the grinding disc of the self-priming corn grinder is increased, causing the sintered NdFeB magnet to reach a temperature that it cannot withstand, and the temperature is lower than 70°C, so that the magnetic force of the sintered NdFeB magnet drops drastically, so that the blockage is released and the temperature of the air flow is higher, so that the nutrient loss of the corn flour is reduced while drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the overall structure of the location where the present invention is located.

[0016] Figure 2 Schematic sectional view of the location where the present invention is located.

[0017] Figure 3 Schematic diagram of the overall structure of the present invention.

[0018] Figure 4 Schematic exploded view of the overall structure of the present invention.

[0019] Figure 5 Schematic diagram of the top structure of the closed fan of the present invention.

[0020] Figure 6 Schematic diagram of the bottom structure of the closed fan of the present invention.

[0021] Figure 7 Schematic exploded view of the main fan block of the present invention.

[0022] Figure 8 Schematic sectional view after decomposition of the main fan block of the present invention.

[0023] Figure 9 Schematic sectional view of the main fan block structure of the present invention.

[0024] Figure 10 Schematic diagram of the rotating block structure of the present invention.

[0025] Figure 11 Schematic diagram of the support assembly structure of the present invention.

[0026] Figure 12 Schematic diagram of the rotating assembly structure of the present invention.

[0027] Figure 13 Schematic sectional view of the structure at the rotating block of the present invention.

[0028] Figure 14 Schematic diagram of the use effect of the closed fan of the present invention.

[0029] Reference numerals are: 1, cyclone dust removal device; 2, discharge pipe; 3, blocking screen; 4, support assembly; 401, support ring; 402, "human"-shaped support frame; 403, rotating assembly; 4031, clamping groove; 4032, anti-disengagement block; 4033, bearing; 5, closed fan; 501, rotating block; 5011, rotating groove; 5012, clamping groove; 5013, anti-disengagement groove; 502, main fan block; 5021, auxiliary fan groove; 5022, closed groove; 5023, sintered neodymium iron boron magnet; 5024, weak pulling spring; 5025, strong pulling spring; 503, auxiliary fan block; 5031, closing block; 5032, ferrite magnet; 504, wind blocking block; 505, brush. Detailed implementation mode

[0030] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples, and the crushing device for corn processing involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0031] Refer to Figure 1-14, the present invention provides a crushing device for corn processing, including a cyclone dust removal device 1. One side of the cyclone dust removal device 1 is connected to a discharge pipe 2. At the bottom end of the inner wall of the discharge pipe 2, a blocking sieve 3 is fixedly connected. At the bottom of the blocking sieve 3, there is a support assembly 4. In the middle of the support assembly 4, there is a closing fan 5. The closing fan 5 includes a rotating block 501. On the outer wall of the rotating block 501, there are evenly arranged main fan blocks 502 fixedly connected. On one side of each main fan block 502, there is an auxiliary fan groove 5021 opened. In the middle of the top end and the bottom end of the auxiliary fan groove 5021, there are closing grooves 5022 opened. In each auxiliary fan groove 5021, there is an auxiliary fan block 503. The auxiliary fan block 503 is located on one side of the bottom of the auxiliary fan groove 5021 and at the closing groove 5022, and fixedly connected with a closing block 5031. Thus, through the closing block 5031 of the auxiliary fan block 503, the closing block 5031 moves along the closing groove 5022, so that the auxiliary fan block 503 extends out. After extending to a certain limit, due to the boundary of the closing groove 5022, the auxiliary fan block 503 cannot continue to extend when it reaches the boundary. On both sides of the closing groove 5022 at the bottom of the auxiliary fan groove 5021, there are sintered neodymium iron boron magnets 5023 fixedly connected. On one side of the sintered neodymium iron boron magnet 5023 at the bottom of the auxiliary fan groove 5021 close to the rotating block 501, there are weak pulling springs 5024 fixedly connected. At the sintered neodymium iron boron magnet 5023 of the main fan block 502, the auxiliary fan block 503 is fixedly connected with corresponding ferrite magnets 5032. On the other side of the sintered neodymium iron boron magnet 5023 at the bottom of the auxiliary fan groove 5021 away from the closing groove 5022, there are strong pulling springs 5025 fixedly connected. One end of the strong pulling spring 5025 and the weak pulling spring 5024 close to the auxiliary fan block 503 are fixedly connected with the auxiliary fan block 503. When the temperature is relatively low, under the repulsive action of the sintered neodymium iron boron magnet 5023 and the ferrite magnet 5032, the auxiliary fan block 503 is pushed out from the main fan block 502 along the closing groove 5022, and the weak pulling spring 5024 and the strong pulling spring 5025 will pull the auxiliary fan block 503. Thus, when the temperature decreases later, it will cause the magnetic force of the sintered neodymium iron boron magnet 5023 and the ferrite magnet 5032 to weaken, so that the repulsive action disappears, and then the weak pulling spring 5024 and the strong pulling spring 5025 are pulled back.

[0032] It should also be noted in this embodiment that: a rotation groove 5011 is formed at the bottom end of the rotation block 501, a clamping groove 5012 is formed in the middle of the rotation block 501 located in the rotation groove 5011, and an anti - detachment groove 5013 is formed at the top end of the rotation block 501 located in the rotation groove 5011. The support assembly 4 includes a support ring 401, the support ring 401 is fixedly connected to the inner wall of the discharge pipe 2, a "human" - shaped support frame 402 is fixedly connected to the middle of the support ring 401, a rotating assembly 403 is fixedly connected to the middle of the "human" - shaped support frame 402, a clamping groove 4031 is formed in the middle of the top end of the rotating assembly 403, an anti - detachment block 4032 is fixedly connected to the top end of the rotating assembly 403, the inner ring of a bearing 4033 is fixedly connected to the outside of the clamping groove 4031, the outer wall of the bearing 4033 is fixedly connected to the clamping groove 5012 of the rotation block 501, the rotating assembly 403 is movably sleeved in the rotation groove 5011 of the rotation block 501, and the anti - detachment groove 5013 of the rotation block 501 is movably sleeved on the outer wall of the anti - detachment block 4032. By the connection mode of the bearing 4033 and the clamping groove 5012, the friction between the rotation groove 5011 and the surface of the rotating assembly 403 is changed to the friction of the bearing 4033, so as to reduce the difficulty of later rotation. At the same time, through the gaps between the rotating assembly 403 and the rotation groove 5011 and between the anti - detachment groove 5013 and the anti - detachment block 4032, it is ensured that the friction force between the rotation groove 5011 and the rotating assembly 403 completely comes from the bearing 4033, so as to ensure better rotation in the later stage and reduce unnecessary friction.

[0033] It should also be noted in this embodiment that: on the side of the bottom end of the main fan block 502 away from the auxiliary fan block 503, there is a fixed connection with a wind shield block 504. The slope of the wind shield block 504 faces the side of the auxiliary fan block 503. On the side of the top end of the main fan block 502 located at one side of the wind shield block 504, there is a fixed connection with a brush 505. When the temperature drops through the slope of the wind shield block 504, since the auxiliary fan block 503 is retracted, the wind force of the self-priming corn crusher will float upward. When the wind force impacts the slope of the wind shield block 504, the vertical airflow will move toward the side close to the auxiliary fan block 503 after the impact. Thus, according to the decomposition of forces, at this time, due to the large impact force, the generated airflow will flow along the cross-section direction of the wind shield block 504. At the same time, since the pressure on the side of the main fan block 502 where the brush 505 is located is smaller than the pressure on the side of the main fan block 502 where the wind shield block 504 is located, an upward force will be generated. Also, due to the cross-section of the wind shield block 504, the upward force will be affected by the cross-section of the wind shield block 504 and converted into the force for the main fan block 502 to rotate. As a result, with the rotation, when the brush 505 discharges the crushed corn flour, it can also clean the blocking sieve 3. At the same time, through the cooperation of the brush 505 and the blocking sieve 3, the problem of large lumps of corn flour not occurring can be solved. Since the temperature is about 65°C, when the corn flour lumps pass through the blocking sieve 3, they will be swept away under the action of the brush 505. At this time, the corn flour is extremely easy to be scattered by external forces and thus difficult to form lumps after drying.

[0034] It should also be noted in this embodiment that: the closed groove 5022 is arc-shaped, so as to ensure that the auxiliary fan block 503 can move along the arc of the closed groove 5022 in the auxiliary fan groove 5021, thus facilitating the auxiliary fan block 503 to shield part of the gap between the main fan block 502 and another adjacent main fan block 502, and ensuring that the auxiliary fan block 503 rotates and extends with the rotating block 501 as the center.

[0035] It should also be noted in this embodiment that the magnetic properties of the ferrite magnet 5032 and the sintered neodymium iron boron magnet 5023 are the same on the sides facing each other. The material of the sintered neodymium iron boron magnet 5023 is N52 magnet, and its maximum operating temperature is ≤60°C, while the ferrite magnet 5032 is a common magnet. For the maximum operating temperature of the N52 magnet of the sintered neodymium iron boron magnet 5023, it is preferably the optimal one with a maximum operating temperature less than 60°C, which can make the weakening of the magnetic force of the sintered neodymium iron boron magnet 5023 more sensitive. And the length after the strong pulling spring 5025 and the weak pulling spring 5024 are pressed is equal to the width of the sintered neodymium iron boron magnet 5023 and the ferrite magnet 5032 plus 5 mm of the gap. The temperature between 60°C and 70°C depends on the material series of the sintered neodymium iron boron magnet 5023, and the specific value of its maximum operating temperature shall not be higher than 60°C. It is optimal to choose a temperature far lower than 60°C because the lower the operating limit temperature, the more sensitive the N52 is to temperature. The main nutrients of corn can minimize nutrient loss during drying at a temperature of 70°C.

[0036] Working principle of the present invention:

[0037] When the self-priming corn crusher is in use, since the self-priming corn crusher starts to absorb corn kernels at this time, and since the corn kernels have not been crushed yet and are in a normal temperature state, the closing fan 5 in the discharge pipe 2 will remain in a semi-closed state. When the temperature in the discharge pipe 2 is at room temperature, the magnetic property of the sintered neodymium iron boron magnet 5023 is in a normal state, and it will repel the ferrite magnet 5032, so that the auxiliary fan block 503 extends from the closing groove 5022 of the main fan block 502 through the closing block 5031. When extending, the strong pull spring 5025 will be stretched. However, since the sintered neodymium iron boron magnet 5023 is a strong magnet, the repulsive force is strong, so that the pulling force of the strong pull spring 5025 is not enough to pull the auxiliary fan block 503 back, resulting in the auxiliary fan block 503 covering part of the gap between the main fan block 502 and another adjacent main fan block 502. As a result, the area of the air flow is reduced. At the same time, since the wind force of the self-priming corn crusher flows upward to the discharge pipe 2, when the wind force and the corn crushing particles hit the slope of the wind blocking block 504, the vertically flowing air flow will move toward the side close to the auxiliary fan block 503 after hitting. Thus, according to the decomposition of forces, at this time, due to the large impact force and the generated air flow will flow along the cross-section direction of the wind blocking block 504. At the same time, since the pressure on the side of the main fan block 502 where the brush 505 is located is smaller than the pressure on the side of the main fan block 502 where the wind blocking block 504 is located, an upward force will be generated. Also, due to the cross-section of the wind blocking block 504, the upward force will be affected by the cross-section of the wind blocking block 504 and converted into the force for the closing fan 5 to rotate. Since the closing fan 5 rotates, the brush 505 can clean the blocking screen 3 when discharging the crushed corn flour. Since the air flow flowing into the gap between the main fan block 502 and another main fan block 502 is small, and due to the rotation of the closing fan 5, the rising air flow becomes disordered at the bottom part of the blocking screen 3, and the part passing through the top of the blocking screen 3 will become disordered again. Thus, the weak air flow is not enough to blow the corn flour to the top of the discharge pipe 2. As time goes by, the corn flour will gradually accumulate at the top of the blocking screen 3. With a large amount of accumulation, the already weak air flow is not enough to blow the corn flour up, so that the corn flour will roll due to the intake air, resulting in the phenomenon of internal air flow rolling. At the same time, it will cause an increase in the corn kernels and the already crushed corn flour reaching the crushing grinding disc of the self-priming corn crusher, resulting in an increase in the friction amount here. As is well known, any form of crusher will generate a large amount of heat during crushing, mainly because of friction generating heat. Therefore, the crushing grinding disc generates a large amount of heat through friction, and the heat is quickly carried to the closing fan 5 through the air flow by the self-priming pump of the self-priming corn crusher itself, so that the closing fan 5 is heated up. Since the sintered neodymium iron boron magnet 5023 is an N52 magnet, when the temperature reaches the working limit temperature of N52, the magnetic force will decay rapidly, and the working limit temperature of N52 is ≤60°C.The main nutrient loss temperature of corn is severely lost at 70°C and above. Due to the weakening of the magnetic force of the sintered neodymium iron boron magnet 5023, the repulsive force also weakens. Since the sintered neodymium iron boron magnet 5023 is a strong magnet, the weakening of the magnetic force of the sintered neodymium iron boron magnet 5023 is a cliff-like weakening. As a result, due to the weakening of the repulsive force, the strong pulling spring 5025 will quickly release the pulling force and withdraw the auxiliary fan block 503. When withdrawing, since the pulling force of the weak pulling spring 5024 is less than that of the strong pulling spring 5025, the sintered neodymium iron boron magnet 5023 and the ferrite magnet 5032 will not collide during pulling. At the same time, since the compressed length of the strong pulling spring 5025 and the weak pulling spring 5024 is equal to the width of the sintered neodymium iron boron magnet 5023 and the ferrite magnet 5032 plus the 5mm gap, the sintered neodymium iron boron magnet 5023 and the ferrite magnet 5032 cannot collide. At this time, since the auxiliary fan block 503 releases the gap blockage between the main fan block 502 and another adjacent main fan block 502, and since the amount of air flowing through the closed fan 5 increases at this time, it will cause the corn flour accumulated at the top of the blocking sieve 3 to be blown up instantly. The blown air flow is a high-temperature air flow between 60°C and 70°C, so as to dry it, and at the same time blow out the accumulated corn flour. Since the pressure is high at the bottom during continuous heating, the force of the air flow hitting the cross-section of the wind blocking block 504 will become stronger and stronger, so that the rotation speed of the closed fan 5 becomes faster, so that the crushed corn flour reaches the discharge pipe 2 along the air flow. Since the temperature at the grinding disk of the self-priming crusher is maintained between 60°C and 70°C, the corn flour increases with the air flow, so that it can pass through the closed fan 5 and then through the blocking sieve 3, so that it can reach the top of the discharge pipe 2. Since there is an air flow of about 60°C to 70°C throughout the process, the moisture of the corn flour in the discharge pipe 2 is dried out and flows out along the cyclone dust removal device 1, so that the corn flour falls out of the cyclone dust removal device 1 with a temperature of about 60°C to 70°C, so as to achieve the purpose of drying;

[0038] As the corn flour is discharged, the temperature inside the self-priming corn crusher will decrease. Due to the decrease in temperature, the magnetic force of the sintered neodymium iron boron magnet 5023 will recover, so that the auxiliary fan block 503 will partially block the gap between the main fan block 502 and another adjacent main fan block 502, thus repeating the above operation to achieve the utilization of the temperature of the internal mechanical conduction and the frictional temperature of the self-priming corn crusher to automatically dry the corn flour.

[0039] Embodiment 2. When the blocking sieve 3 is not used, the difference is that most of the corn flour will fall to the edge of the support ring 401 of the support assembly 4. As it accumulates more and more, it will still cover the closing fan 5. However, this means that the time for repeated grinding of the corn flour is longer because it is necessary to cover the closing fan 5 first before it can be quickly heated up and then dried. The advantage is that the corn flour can be ground more finely.

[0040] Finally, the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crushing device for corn processing, including a cyclone dust removal device (1). Characterized in that: One side of the cyclone dust removal device (1) is connected with a discharge pipe (2). At the bottom end of the inner wall of the discharge pipe (2), a blocking sieve (3) is fixedly connected. At the bottom of the blocking sieve (3), a support assembly (4) is provided. In the middle of the support assembly (4), a closing fan (5) is connected. The closing fan (5) includes a rotating block (501). On the outer wall of the rotating block (501), main fan blocks (502) arranged at equal intervals are fixedly connected. On one side of each main fan block (502), auxiliary fan grooves (5021) are opened. In the middle of the top end and the bottom end of the auxiliary fan groove (5021), closing grooves (5022) are opened. In each auxiliary fan groove (5021), an auxiliary fan block (503) is provided. The auxiliary fan block (503) is located on one side close to the bottom of the auxiliary fan groove (5021) and close to the closing groove (5022), and closing blocks (5031) are fixedly connected. On both sides of the bottom of the auxiliary fan groove (5021) close to the closing groove (5022), sintered neodymium iron boron magnets (5023) are fixedly connected. The sintered neodymium iron boron magnets (5023) on one side of the bottom of the auxiliary fan groove (5021) close to the rotating block (501) and close to the rotating block (501) are fixedly connected with weak pulling springs (5024). The auxiliary fan blocks (503) are fixedly connected with corresponding ferrite magnets (5032) at the sintered neodymium iron boron magnets (5023) close to the main fan blocks (502). On the other side of the bottom of the auxiliary fan groove (5021), the sintered neodymium iron boron magnets (5023) far from the closing groove (5022) are fixedly connected with strong pulling springs (5025). One ends of the strong pulling spring (5025) and the weak pulling spring (5024) close to the auxiliary fan block (503) are fixedly connected with the auxiliary fan block (503). The sides of the ferrite magnet (5032) and the sintered neodymium iron boron magnet (5023) close to each other have the same magnetic property.

2. The crushing device for corn processing according to claim 1, Characterized in that: A rotating groove (5011) is formed at the bottom end of the rotating block (501). A clamping groove (5012) is formed in the middle of the rotating block (501) near the rotating groove (5011). An anti - detachment groove (5013) is formed at the top end of the rotating block (501) near the rotating groove (5011). The support assembly (4) includes a support ring (401). The support ring (401) is fixedly connected to the inner wall of the discharge pipe (2). A "human"-shaped support frame (402) is fixedly connected to the middle of the support ring (401). A rotating assembly (403) is fixedly connected to the middle of the "human"-shaped support frame (402). A clamping groove (4031) is formed in the middle of the top end of the rotating assembly (403). An anti - detachment block (4032) is fixedly connected to the top end of the rotating assembly (403). The inner ring of a bearing (4033) is fixedly connected to the outside of the clamping groove (4031). The outer wall of the bearing (4033) is fixedly connected to the clamping groove (5012) of the rotating block (501). The rotating assembly (403) is movably sleeved in the rotating groove (5011) of the rotating block (501). The anti - detachment groove (5013) of the rotating block (501) is movably sleeved on the outer wall of the anti - detachment block (4032).

3. The pulverizing device for corn processing according to claim 1, characterized in that: A wind - blocking block (504) is fixedly connected to the bottom end of the main fan block (502) on the side far from the auxiliary fan block (503). The slope of the wind - blocking block (504) faces the side of the auxiliary fan block (503). A brush (505) is fixedly connected to the top end of the main fan block (502) near the wind - blocking block (504).

4. The pulverizing device for corn processing according to claim 1, characterized in that: The closed groove (5022) is arc - shaped.

5. The pulverizing device for corn processing according to claim 1, characterized in that: The length of the strongly - pulled spring (5025) and the weakly - pulled spring (5024) after being pressed together is equal to the width of the sintered neodymium - iron - boron magnet (5023) and the ferrite magnet (5032) plus 5 mm of the gap.

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