Feed fine grinding and screening device and method based on pig and chicken breeding

Abstract

The invention relates to the technical field of feed grinding, in particular to a feed fine grinding and screening device and method based on pig and chicken breeding, the feed fine grinding and screening device comprises a grinding box, the inner side of the grinding box is provided with an adjusting mechanism, and the inner side of the grinding box is provided with two winding discs which are in transmission connection through a transmission part in the same direction at the same angular speed; a grinding screen is wound on the outer side of the winding disc, the hole diameter of the middle section of the grinding screen is the smallest, and the hole diameters of the positions close to the two ends of the grinding screen are the largest; the design of the adjusting mechanism and the long and symmetrical grinding screen is adopted, when feed needs to be processed into different apertures, only the driving part needs to be started to change the working area of the grinding screen, and when the feed is replaced to the position of the small aperture section of the grinding screen for processing, the elastic part can increase the vibration amplitude of the grinding screen and reduce the blocking rate; when the grinding screen is replaced to the position of the large-aperture section of the grinding screen for machining, the elastic piece can reduce the vibration amplitude of the grinding screen, and stability is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of feed grinding, in particular to a device and method for finely grinding and screening feed based on pig and chicken farming. Background Art

[0002] In the field of feed processing, fine grinding is a key step to ensure feed quality, which affects the digestion and absorption efficiency and nutritional value of animals. The feed raw materials are automatically sucked into the grinding chamber through the self-priming feeding system. The movable gear disc and the fixed gear disc in the grinding chamber perform high-speed relative motion. The feed raw materials are ground into fine powder through the combined effects of impact, friction and mutual impact between materials. The fine powdered feed is screened through the screen to separate feeds of different particle sizes. The screened feed particles are discharged through the discharge port to achieve fine grinding and screening of the feed.

[0003] Chinese patent publication number CN118788455B discloses a grain feed crushing device and crushing method, including a crushing box, a screen, a drainage tube and a motor. When blockage occurs, the material can squeeze the joint plate outward through the pressure relief port, causing the joint plate to flip outward, thereby increasing the gap in the screening channel. Accordingly, the material crushing time is shortened, the discharge speed is accelerated, and the pressure is relieved to avoid deformation and damage of the screen caused by blockage.

[0004] Chinese patent publication number CN119114256B discloses a high-efficiency feed pulverizing device and processing method for feed processing, comprising: a pulverizing outer cylinder, a feed hopper mounted on the top of the pulverizing outer cylinder, and a pulverizing mechanism disposed within the pulverizing outer cylinder. This invention increases the contact opportunities between the feed raw materials and the pulverizing ends of the pulverizing components by providing multiple pulverizing components, allowing the feed raw materials to fully contact the pulverizing ends of the pulverizing components and pulverize the feed raw materials to the desired small particle size in a short time.

[0005] The above-mentioned and similar existing technologies can achieve fine grinding and screening of feed to a certain extent, but the aperture of the grinding screen is a fixed size. When the feed needs to be processed into different sizes, the grinding screen needs to be manually disassembled and replaced frequently each time. Improper operation can easily cause the screen frame to deform and greatly reduce work efficiency. In addition, when finely grinding and screening the feed, the grinding screen with a small aperture is prone to clogging, which can easily increase the load of the motor and squeeze the grinding screen, resulting in compression deformation of the grinding screen.

[0006] During the grinding and refining process, small-aperture grinding screens are more prone to clogging, so a certain vibration effect needs to be added to reduce clogging. Large-aperture grinding screens are not easily clogged, and increasing the vibration effect may affect the discharge stability. It is difficult for existing technologies to make a balanced design for the above problems.

[0007] Therefore, the present invention provides a feed fine grinding and screening device and method based on pig and chicken farming, which can facilitate the replacement of the aperture of the grinding screen, and the vibration amplitude changes accordingly with the change of the aperture size. Summary of the Invention

[0008] Aiming at the problems in the prior art that the grinding screen needs to be replaced frequently and the grinding screen with small aperture is prone to clogging, a feed fine grinding and screening device and method based on pig and chicken farming are designed.

[0009] The technical solution adopted by the present invention to solve its technical problems is: a feed fine grinding and screening device and method based on pig and chicken farming, including a grinding box, an adjusting mechanism is provided on the inner side of the grinding box, and two winding disks are provided on the inner side of the grinding box that are connected in the same direction and at the same angular velocity through a transmission member, and a grinding screen is wound on the outer side of the winding disk, and the grinding screen includes a small aperture section in the middle and large aperture sections at both ends; the adjusting mechanism includes a deformable elastic part at the top, and the grinding screen that is not wound by the winding disk is tightly attached to and sleeved on the outer side of the elastic part. The two winding disks are rotated by the driving member to complete the replacement of the working area of the grinding screen, and the elastic part can adapt to the change of the winding speed of the grinding screen by the two winding disks through its own deformation, and make the vibration amplitude generated by the feed hitting the grinding screen sleeved on the outer side of the elastic part change with the deformation of the elastic part itself.

[0010] Furthermore, a grinding chamber is provided on the inner side of the grinding box, two storage chambers are provided on the inner side of the grinding box, and the two storage chambers are located at the top of the grinding chamber, the winding disk is detachable, and the two winding disks are respectively located on the inner sides of the two storage chambers, and a material leakage port is provided on the inner side of the grinding box, the grinding chamber, the storage chamber and the material leakage port are communicated with each other, and two rotatable support rollers are provided at the intersection of the grinding chamber and the storage chamber.

[0011] Furthermore, an openable box cover is provided on one side of the grinding box, a feed pipe is installed through the inside of the box cover, a blower is fixedly installed on the side of the grinding box away from the box cover, the input end of the blower is connected to the leakage port, and a collector is fixedly installed on the output end through a conveying pipe.

[0012] Furthermore, a cutter disc is rotatably installed inside the grinding box through a bearing, and the cutter disc is located inside the grinding chamber. A bracket is fixedly installed at the bottom of the grinding box, and a drive motor is fixedly installed on one side of the bracket. The drive motor is connected to the cutter disc through a transmission member.

[0013] Furthermore, the adjustment mechanism also includes two clamping rings, which are respectively located on both sides of the grinding screen. A limiting ring is raised on the side where the two clamping rings are close to each other, and the limiting ring is located near the center of the clamping ring. A plurality of rotatable rollers are embedded and installed on the side where the two clamping rings are close to each other. A support rod is fixedly installed on the side where the two clamping rings are close to each other, and the support rod is close to the bottom position of the clamping ring.

[0014] Furthermore, the elastic part includes two arc-shaped outer supports and a spring. The two outer supports are rotatably installed on the outside of the support rod. The ends of the two outer supports away from the support rod are fixedly connected to the two ends of the spring respectively, and the spring is always in a compressed state.

[0015] Furthermore, a plurality of fixing rods are fixedly installed on the inner wall of one side of the grinding chamber. The fixing rods pass through the inner sides of the two clamping rings, and one end of the fixing rods limits the two clamping rings through a nut.

[0016] Furthermore, a partition is provided between the two receiving chambers, a slot is provided at the bottom of the partition, an inserting plate is slidably installed on the inner side of the slot, and a sealing plate is fixedly installed on the bottom of the inserting plate.

[0017] Furthermore, the sealing plate is made of elastic metal material and is located on the top of the elastic part, and both ends of the sealing plate are squeezed and deformed by the grinding screen.

[0018] Furthermore, a method for using a feed fine grinding and screening device based on pig and chicken farming: S1: Grinding screen installation: the staff first opens the box cover and installs the grinding screen inside the grinding box; S2: The staff determines the aperture size of the grinding screen according to the size of the required feed, starts the driving part to drive the winding disk to rotate, so that the grinding screen with the corresponding aperture is wrapped around the outside of the clamping ring; S3: Depending on the size of the selected aperture, the following process occurs: a: When the selected grinding screen is in the small aperture section, the elastic contraction of the elastic part is small, and the shrinkage of the elastic part is large, so that the vibration amplitude of the grinding screen increases when working, reducing the clogging of the grinding screen in the small aperture section; b: When the selected grinding screen is in the large-aperture section, the elastic contraction of the elastic part is large and the shrinkage of the elastic part is small, which reduces the vibration amplitude of the grinding screen when it is working and improves the stability of the large-aperture section grinding screen when the feed passes through it.

[0019] Beneficial effects of the present invention: The present invention describes a feed fine grinding and screening device and method based on pig and chicken farming, which adopts an adjustment mechanism and a long and symmetrical grinding screen design. When the feed needs to be processed into different apertures, it is only necessary to start the driving member to change the working area of the grinding screen to achieve the replacement of the aperture size in the working area of the grinding screen, thereby improving work efficiency; only one driving member is needed to achieve the replacement and storage of the grinding screen aperture, saving the manufacturing cost of the device; and the design of the elastic part enables it to adaptively compensate for the difference in linear speeds of the two winding reels through its own deformation, thereby improving the functionality of the device; when the position of the small aperture section of the grinding screen is replaced for processing, the elastic part can increase the vibration amplitude of the grinding screen and reduce the blockage rate; when the position of the large aperture section of the grinding screen is replaced for processing, the elastic part can reduce the vibration amplitude of the grinding screen and provide stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the grinding device of the present invention; Figure 2 It is a schematic diagram of the back three-dimensional structure of the grinding device of the present invention; Figure 3 Schematic diagram of the cross-sectional structure of the grinding box of the present invention; Figure 4 Schematic diagram of the inner structure of the grinding chamber of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the slot of the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the regulating mechanism of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the clamping ring of the present invention; Figure 9 This is a schematic diagram of the structure of the grinding screen of the present invention when the minimum aperture section is working; Figure 10 This is a schematic diagram of the structure of the grinding screen of the present invention when the maximum aperture section is working. Figure 11 It is a schematic structural diagram of the grinding screen of the present invention when it is unfolded.

[0022] In the figure: 1. bracket; 2. grinding box; 21. grinding chamber; 22. storage chamber; 23. leakage port; 24. support roller; 25. fixing rod; 26. partition; 3. box cover; 4. feed pipe; 5. blower; 6. collector; 7. cutter disc; 8. adjustment mechanism; 81. clamping ring; 82. limit ring; 83. roller; 84. support rod; 85. external support member; 86. spring; 9. winding reel; 10. grinding screen; 11. slot; 12. plug-in plate; 13. sealing plate. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] Example: Figures 1-11 As shown, the present invention describes a feed fine grinding and screening device and method based on pig and chicken farming, which includes a grinding box 2, a grinding chamber 21 is opened on the inner side of the grinding box 2, two storage chambers 22 are opened on the inner side of the grinding box 2, and the two storage chambers 22 are located on the top of the grinding chamber 21, the winding disk 9 is detachable, and the two winding disks 9 are respectively located on the inner sides of the two storage chambers 22, a material leakage port 23 is opened on the inner side of the grinding box 2, the grinding chamber 21, the storage chamber 22 and the material leakage port 23 are connected, and two rotatable support rollers 24 are provided at the intersection of the grinding chamber 21 and the storage chamber 22.

[0025] Specifically, the grinding box 2 can provide space for the grinding chamber 21, the storage chamber 22 and the leakage port 23. The grinding chamber 21 can provide a movable space for the cutter disc 7. When the external feed enters the inner side of the grinding chamber 21, the high-speed rotating cutter disc 7 can crush the feed into small particles and make the small particles of feed fly to the grinding screen 10. The small particles of feed that meet the standards pass through the aperture and fall downward, and the small particles of feed that do not meet the standards continue to be crushed by the cutter disc 7 on the inner side of the grinding screen 10. The storage chamber 22 can provide a movable space for the winding disk 9, so that the winding disk 9 can retract and release the grinding screen 10 in the storage chamber 22. The leakage port 23 can provide a channel for the small particles of feed that meet the standards to fall downward. The support roller 24 can provide support for the direction change of the grinding screen 10, thereby reducing the contact friction between the grinding screen 10 and the inner wall of the grinding box 2.

[0026] In this embodiment, an openable box cover 3 is provided on one side of the grinding box 2, and a feed pipe 4 is installed inside the box cover 3. A blower 5 is fixedly installed on the side of the grinding box 2 away from the box cover 3. The input end of the blower 5 is communicated with the leakage port 23, and the output end is fixedly installed with a collector 6 through a conveying pipe. A cutter disc 7 is rotatably installed inside the grinding box 2 through a bearing, and the cutter disc 7 is located on the inner side of the grinding chamber 21. A bracket 1 is fixedly installed on the bottom of the grinding box 2, and a drive motor is fixedly installed on one side of the bracket 1. The drive motor is connected to the cutter disc 7 through a transmission member.

[0027] Specifically, the box cover 3 can be rotatably connected to the grinding box 2 by a hinge, and can also be fastened to the grinding box 2 by bolts. When it is necessary to operate the inside of the grinding box 2, the box cover 3 can be opened, and the feed pipe 4 can provide a channel for the external feed to enter the inside of the grinding box 2. When it is necessary to add feed to the inside of the grinding box 2, the blower 5 is started, and the blower 5 sucks air through the input end at the bottom of the grinder, so that a negative pressure is formed inside the grinding box 2. Under the action of the negative pressure, the outside air enters the inside of the grinding box 2 through the feed pipe 4, and the outside air is sucked out. The feed is placed at one end of the feed pipe 4, so that when the external space enters, it drives the feed together and enters the inner side of the grinding box 2 to contact the cutter disc 7. At the same time, the drive motor is started to drive the transmission member to work. The transmission member is a combination of a belt and a pulley. The drive motor drives the cutter disc 7 to rotate at high speed through the transmission member. The external feed is ground into small particles that meet the standards and then enters the blower 5 through the leakage port 23. Under the action of the blower 5, it is transported to the collector 6 through the conveying pipe. The collector 6 stores the feed and is started to discharge the feed when needed.

[0028] In this embodiment, two winding disks 9 are provided on the inner side of the grinding box 2, which are connected in the same direction and at the same angular velocity through transmission parts. A grinding screen 10 is wound on the outer side of the winding disk 9, and the grinding screen 10 includes a small aperture section in the middle and large aperture sections at both ends, and the different aperture areas of the grinding screen 10 are symmetrically distributed.

[0029] Specifically, the transmission member on the outside of the winding disk 9 is located on the back of the grinding box 2. The transmission member can be a combination of a belt and a pulley, or a combination of a chain and a sprocket. One of the winding disks 9 is connected to an external driving member, which can be a motor. When the driving member is started, the driving member drives the two winding disks 9 to rotate synchronously, in the same direction and at the same angular velocity through the transmission member, so that one winding disk 9 releases the grinding screen 10 and the other winding disk 9 reels the grinding screen 10. When it is necessary to process the feed into different sizes, the driving member is started to drive the grinding screen 10 to rotate, so that the grinding screen 10 in other aperture areas is located on the inner side of the grinding chamber 21, which is convenient for replacing the aperture size of the grinding screen 10.

[0030] In this embodiment, an adjustment mechanism 8 is provided on the inner side of the grinding box 2, which includes an elastic part with a deformable top. Part of the grinding screen 10 that has not been wound up by the winding disk 9 is tightly attached to and sleeved on the outer side of the elastic part. When the two winding disks 9 are driven to rotate by the driving member, the grinding screen 10 with different apertures can be replaced conveniently, and the elastic part can adaptively compensate for the linear speed difference of the two winding disks 9. When the aperture of the grinding screen 10 is smaller, the elastic contraction of the elastic part is smaller, and the vibration amplitude of the grinding screen 10 is greater. The adjustment mechanism 8 also includes two clamping rings 81, which are respectively located on both sides of the grinding screen 10. A limit ring 82 is raised on the side where the two clamping rings 81 are close to each other. The limit ring 82 is located near the center of the clamping ring 81. A plurality of rotatable rollers 83 are embedded on the side where the two clamping rings 81 are close to each other. A support rod 84 is fixedly installed on the side where the two clamping rings 81 are close to each other, and the support rod 84 is close to the bottom position of the clamping ring 81.

[0031] Specifically, when the two winding discs 9 rotate, the outer diameters of the grinding screens 10 wound on the surfaces of the two winding discs 9 are different due to the different number of turns, which causes the release linear speed and the winding linear speed of the grinding screens 10 of the two winding discs 9 to always change. When the release speed of the grinding screen 10 is greater than the winding speed, the length of the grinding screen 10 inside the grinding chamber 21 gradually increases. At this time, the pressure on the outside of the elastic member by the grinding screen 10 gradually decreases. This part of the grinding screen 10 will produce a larger vibration amplitude when hit by the feed. On the contrary, when the release speed of the grinding screen 10 is less than the winding speed, the grinding screen inside the grinding chamber 21 will gradually increase. 10 length gradually decreases, at this time the pressure on the outer side of the elastic member by the grinding screen 10 gradually increases, and the vibration amplitude of this part of the grinding screen 10 when hit by the feed will also decrease, the clamping ring 81 can limit the two sides of the grinding screen 10, the limiting ring 82 can provide limiting support for the elastic part, the clamping ring 81 can provide rolling space for the roller 83, when the winding disk 9 drives the grinding screen 10 to rotate, the roller 83 can provide rolling support for the two sides of the grinding screen 10, reducing the moving friction of the grinding screen 10, the support rod 84 can provide movement support for the elastic part, and the elastic part provides elastic support for the grinding screen 10; When the smallest aperture section of the grinding screen 10 is in the grinding chamber 21, that is, the middle position of the grinding screen 10 is inside the grinding chamber 21, the grinding screens 10 wound on the outer sides of the two winding discs 9 have the same thickness (e.g. Figure 6As shown), at this time, the grinding screen 10 located inside the grinding chamber 21 has the largest length and the smallest aperture, and the pressure of the grinding screen 10 on the elastic part is the smallest, so that the deformability of the elastic part is the largest. When the grinding screen 10 is subjected to random impact of the crushed feed particles and the impact force is unstable, it can generate a relatively large vibration amplitude, thereby reducing the blockage rate of the grinding screen 10 in the small aperture section during operation. At this time, when the driving member is started to drive the winding disk 9 to rotate, the winding linear speed of the winding disk 9 is greater than the release linear speed, and the length of the grinding screen 10 inside the grinding chamber 21 is reduced, so that the grinding screen 10 drives the elastic part to gradually shrink, so that the elastic part can adaptively compensate for the change in the length of the grinding screen 10 inside the grinding chamber 21 caused by the difference in linear speeds of the two winding disks 9. In this process, the pressure of the grinding screen 10 on the elastic part gradually increases, and the deformability of the elastic part gradually decreases. Until the grinding screen 10 is almost completely wound up on the outside of a winding disk 9, the length of the grinding screen 10 inside the grinding chamber 21 is the smallest and the aperture is the largest. The pressure of the grinding screen 10 squeezing the elastic part reaches the maximum, the remaining retractable amount of the elastic part is the smallest, and the grinding screen 10 is in the most taut state. At this time, the vibration generated by the impact of the feed when the grinding screen 10 is working is the smallest, which improves the stability of the feed passing through the large-aperture section of the grinding screen 10 when working.

[0032] In this embodiment, the elastic part includes two arc-shaped external supports 85 and a spring 86. The two external supports 85 are rotatably installed on the outside of the support rod 84. The ends of the two external supports 85 away from the support rod 84 are fixedly connected to the two ends of the spring 86 respectively, and the spring 86 is always in a compressed state.

[0033] Specifically, the elastic part is squeezed by the grinding screen 10, causing the outer support member 85 to rotate with the support rod 84 as the center of the circle. The spring 86 is compressed to push the two ends of the outer support member 85 to both sides, so that the outer support member 85 supports the inner side of the grinding screen 10. When the length of the grinding screen 10 inside the grinding chamber 21 is the smallest and the aperture is the largest, the expansion and contraction of the elastic part reaches the maximum. At this time, the outer support member 85 is tightly attached to the outer side of the limit ring 82 under the squeezing of the grinding screen 10, and the taut grinding screen 10 is difficult to vibrate, thereby improving the stability of the grinding screen 10.

[0034] In this embodiment, a plurality of fixing rods 25 are fixedly installed on the inner wall of one side of the grinding chamber 21 . The fixing rods 25 pass through the inner sides of the two clamping rings 81 . One end of the fixing rods 25 limits the two clamping rings 81 through a nut.

[0035] Specifically, the fixing rod 25 squeezes and limits the two clamping rings 81 through the nut, and the two clamping rings 81 squeeze and limit the two sides of the grinding screen 10 through the rollers 83.

[0036] In this embodiment, a partition 26 is provided between the two storage chambers 22, and a slot 11 is provided at the bottom of the partition 26. An insert plate 12 is slidably installed on the inner side of the slot 11, and a sealing plate 13 is fixedly installed on the bottom of the insert plate 12. The sealing plate 13 is made of elastic metal material and is located at the top of the elastic part. Both ends of the sealing plate 13 are squeezed and deformed by the grinding screen 10.

[0037] Specifically, the slot 11 can provide a movable space for the insert plate 12, and the sealing plate 13 can provide an annular sealing effect for the grinding screen 10 inside the grinding chamber 21. The two ends of the outer support member 85 provide an upward force for the sealing plate 13, so that the two ends of the sealing plate 13 are tightly fitted with the inner side of the grinding screen 10. At the same time, the sealing plate 13 and the grinding screen 10 inside the grinding chamber 21 form a circular sealing ring to prevent the feed from entering the storage chamber 22, thereby ensuring that the feed can be fully ground.

[0038] The method for using the feed fine grinding and screening device based on pig and chicken farming: S1: Installation of the grinding screen 10: The staff first opens the box cover 3 and installs the grinding screen 10 on the inner side of the grinding box 2; S2: The staff determines the aperture size of the grinding screen 10 according to the size of the required feed, starts the driving member to drive the winding disk 9 to rotate, so that the grinding screen 10 of the corresponding aperture is wrapped around the outside of the clamping ring 81; S3: Depending on the size of the selected aperture, the following process occurs: a: When the selected grinding screen 10 is in the small aperture section, the elastic contraction amount of the elastic part is small and the shrinkage amount of the elastic part is large, so that the vibration amplitude of the grinding screen 10 is increased when working, reducing the clogging of the grinding screen 10 in the small aperture section; b: When the selected grinding screen 10 is in the large-aperture section, the elastic contraction of the elastic part is large and the shrinkage of the elastic part is small, so that the vibration amplitude of the grinding screen 10 is reduced when it is working, and the stability of the large-aperture section grinding screen 10 when passing the feed is improved.

[0039] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feed fine grinding and screening device based on pig and chicken farming, comprising a grinding box (2), characterized in that: An adjusting mechanism (8) is provided on the inner side of the grinding box (2), and two winding disks (9) are provided on the inner side of the grinding box (2) and are connected in the same direction and at the same angular speed through a transmission member. A grinding screen (10) is wound on the outer side of the winding disk (9), and the grinding screen (10) includes a small-aperture section in the middle and large-aperture sections at both ends; The adjusting mechanism (8) includes an elastic part with a deformable top, and the grinding screen (10) not wound by the winding disc (9) is tightly attached to and mounted on the outside of the elastic part. The two winding discs (9) rotate through the driving member to complete the replacement of the working area of the grinding screen (10), and the elastic part can adapt to the change of the winding speed of the grinding screen (10) by the two winding discs (9) through its own deformation, and the vibration amplitude generated by the feed hitting the grinding screen (10) mounted on the outside of the elastic part changes with the deformation of the elastic part itself.

2. The feed fine grinding and screening device based on pig and chicken farming according to claim 1 is characterized in that: The grinding box (2) has a grinding chamber (21) formed on the inner side thereof, two receiving chambers (22) formed on the inner side thereof, and the two receiving chambers (22) are located at the top of the grinding chamber (21), the winding disc (9) is detachable, and the two winding discs (9) are respectively located on the inner sides of the two receiving chambers (22), a material leakage port (23) is formed on the inner side of the grinding box (2), the grinding chamber (21), the receiving chamber (22) and the material leakage port (23) are in communication with each other, and two rotatable support rollers (24) are provided at the intersection of the grinding chamber (21) and the receiving chamber (22).

3. The feed fine grinding and screening device based on pig and chicken farming according to claim 2 is characterized in that: An openable box cover (3) is provided on one side of the grinding box (2), a feed pipe (4) is installed through the interior of the box cover (3), a blower (5) is fixedly installed on the side of the grinding box (2) away from the box cover (3), the input end of the blower (5) is communicated with the material leakage port (23), and a material collector (6) is fixedly installed on the output end via a conveying pipe.

4. The feed fine grinding and screening device based on pig and chicken farming according to claim 3 is characterized in that: A cutter disc (7) is rotatably mounted inside the grinding box (2) via a bearing. The cutter disc (7) is located inside the grinding chamber (21). A bracket (1) is fixedly mounted on the bottom of the grinding box (2). A drive motor is fixedly mounted on one side of the bracket (1). The drive motor is connected to the cutter disc (7) via a transmission member.

5. The feed fine grinding and screening device based on pig and chicken farming according to claim 1 is characterized in that: The adjustment mechanism (8) further comprises two clamping rings (81), the two clamping rings (81) being respectively located on both sides of the grinding screen (10), a limiting ring (82) being raised on one side of the two clamping rings (81) close to each other, the limiting ring (82) being located near the center of the clamping ring (81), a plurality of rotatable rollers (83) being embedded and installed on one side of the two clamping rings (81) close to each other, a support rod (84) being fixedly installed on one side of the two clamping rings (81) close to each other, and the support rod (84) being located near the bottom of the clamping ring (81).

6. The feed fine grinding and screening device based on pig and chicken farming according to claim 5, characterized in that: The elastic portion includes two arc-shaped outer support members (85) and a spring (86). The two outer support members (85) are rotatably mounted on the outside of the support rod (84). One end of the two outer support members (85) away from the support rod (84) is fixedly connected to the two ends of the spring (86), and the spring (86) is always in a compressed state.

7. The feed fine grinding and screening device based on pig and chicken farming according to claim 5 is characterized in that: A plurality of fixing rods (25) are fixedly mounted on the inner wall of one side of the grinding chamber (21). The fixing rods (25) pass through the inner sides of the two clamping rings (81). One end of the fixing rods (25) limits the two clamping rings (81) via a nut.

8. The feed fine grinding and screening device based on pig and chicken farming according to claim 2 is characterized in that: A partition (26) is provided between the two receiving chambers (22), a slot (11) is provided at the bottom of the partition (26), an inserting plate (12) is slidably mounted on the inner side of the slot (11), and a sealing plate (13) is fixedly mounted on the bottom of the inserting plate (12).

9. The feed fine grinding and screening device based on pig and chicken farming according to claim 8, characterized in that: The sealing plate (13) is made of elastic metal material and is located on the top of the elastic portion. Both ends of the sealing plate (13) are deformed by the extrusion of the grinding screen (10).

10. A method for using the feed fine grinding and screening device for pig and chicken farming according to any one of claims 1 to 9, characterized in that: S1: Installation of the grinding screen (10). The staff first opens the box cover (3) and installs the grinding screen (10) on the inner side of the grinding box (2); S2: The staff determines the aperture size of the grinding screen (10) according to the size of the required feed, starts the driving member to drive the winding disk (9) to rotate, so that the grinding screen (10) of the corresponding aperture is wrapped around the outside of the clamping ring (81); S3: Depending on the size of the selected aperture, the following process occurs: a: When the selected grinding screen (10) is in the small aperture section, the elastic contraction amount of the elastic part is small and the shrinkage amount of the elastic part is large, so that the vibration amplitude of the grinding screen (10) increases when it is working, reducing the clogging of the grinding screen (10) in the small aperture section; b: When the selected grinding screen (10) is in the large-aperture section, the elastic contraction amount of the elastic part is large and the shrinkage amount of the elastic part is small, so that the vibration amplitude of the grinding screen (10) is reduced when it is working, and the stability of the large-aperture section grinding screen (10) when the feed passes through is improved.

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