Edible feed screening machine for laying hens

Abstract

The invention relates to the technical field of screening equipment, in particular to a laying hen feed screening machine which comprises a top plate, two U-shaped frames and a screen, the two U-shaped frames are fixed to the bottom of the top plate, openings of the U-shaped frames face upwards, and each U-shaped frame is composed of an arc-shaped part located at the bottom and vertical parts located on the left side and the right side; sliding grooves consistent with the U-shaped frames in shape are formed in the side walls of the U-shaped frames, reinforcing ribs are arranged in the sliding grooves in a sliding mode, the screen is located between the two U-shaped frames, the screen is consistent with the U-shaped frames in shape, and the front end and the rear end of the screen are fixedly connected with the two reinforcing ribs respectively. Through the swing structure and the uniquely designed screen, feed particles can move left and right and roll back and forth on the screen, so that the feed particles can conveniently and quickly find the corresponding screen holes and fall off the screen, the chance that the small particles in the feed are in contact with the screen holes is greatly improved, and the screening efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, in particular to a screening machine for laying hen edible feed. Background Art

[0002] With the rapid development of the poultry farming industry, especially the popularization of large-scale laying hen farming, the requirements for feed quality are getting higher and higher. The quality of feed not only directly affects the growth and development of laying hens and the egg production rate, but also affects the quality of eggs and the health and safety of the final consumers. Therefore, improving the screening efficiency and accuracy in the feed processing process has become an indispensable part of the farming industry.

[0003] In the traditional feed processing process, feed particles are usually poured into a sieve plate, the sieve plate is vibrated and the feed particles are screened, and then the remaining particles on the sieve plate are taken away, and then the next screening work is carried out. This method requires repeated removal of larger particles of feed intercepted by the sieve plate, and its operation is relatively cumbersome and cannot form a continuous screening method. If the feed particles are caused to tilt on the sieve plate, the screening work can only be achieved when smaller particles are accurately rolled to the sieve hole position, and most particles cannot be accurately moved to this position, resulting in poor screening and separation effect. Based on the various disadvantages of the existing screening equipment, the present invention provides a laying hen edible feed screening machine. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a laying hen edible feed screening machine, and the specific technical solution adopted is: According to a first aspect of the present invention, there is provided a sieving machine for laying hen edible feed, comprising a top plate, two U-shaped frames and a screen, wherein the two U-shaped frames are fixed to the bottom of the top plate, the opening of the U-shaped frame is upward, and the U-shaped frame is composed of an arc-shaped portion located at the bottom and vertical portions located at the left and right sides, a slide groove consistent with the shape of the U-shaped frame is provided on the side wall of the U-shaped frame, a reinforcement rib is slidably arranged in the slide groove, the screen is located between the two U-shaped frames, and the shape of the screen is consistent with the shape of the U-shaped frame, and the front and rear ends of the screen are respectively fixedly connected to the two reinforcement ribs; Among them, a back plate is fixed on the inner side of a U-shaped frame, and the back plate is fixedly connected to the top plate. The other U-shaped frame serves as a discharge end. A feed pipe for feeding material to the screen is obliquely arranged on the back plate, and a swinging structure for making the screen reciprocate along the U-shaped frame track is arranged on the back plate.

[0005] Furthermore, the screen is composed of a flattened area and a flanged area, the flattened area is connected to the reinforcing ribs at the back plate position, the flanged area is located on a U-shaped frame as a discharge end, and the flanged area is flanged toward the outside.

[0006] Furthermore, a buckle box is provided inside the screen, the buckle box is fixed on the back plate, buckle covers are provided on both left and right sides of the screen, a three-way pipe is provided between the two buckle covers, and the buckle covers are fixed on the back plate; Among them, the buckle cover is fitted with the outer wall of the screen, and the inner side of the buckle box is provided with oblique air ducts on the left and right sides and a vertical air duct in the middle. The buckle cover is aligned with the oblique air duct, and the buckle cover can pass the air through the screen and discharge it into the oblique air duct. The air in the oblique air duct flows downward through the vertical air duct, and a discharge port for discharging is opened on the side wall of the buckle box.

[0007] Furthermore, the screen is inclined toward the U-shaped frame serving as a discharge end.

[0008] Furthermore, the left and right ends of the top of the screen are provided with reinforcement frames, and two guide rails are vertically provided on the side wall of the back plate, and the reinforcement frames are slidably mounted on the guide rails; The swing structure includes a main shaft rotatably inserted on the back plate and two transmission wheels rotatably installed on the back plate, the two transmission wheels are located on the left and right sides of the main shaft, and the main shaft is connected to the transmission wheels in a transmission manner. A swing frame is sleeved on the main shaft, and the swing frame consists of a circular hole area located in the middle and long groove areas located on the left and right sides. The swing frame is rotatably installed on the main shaft through the circular hole area, and eccentric columns are slidably arranged in the two long groove areas of the swing frame. The two eccentric columns are eccentrically installed on the two transmission wheels respectively, and telescopic rods are fixed at both ends of the swing frame, and the movable end of the telescopic rod is rotatably installed on the reinforcement frame. A main motor for providing power to the main shaft is arranged on the back plate.

[0009] Furthermore, a rotating column is rotatably embedded on the back plate inside the buckle box, the axis of the rotating column is coplanar with the back plate, one side of the rotating column is exposed on one side of the back plate, and the other side of the rotating column is exposed on the other side of the back plate, and a fan plate is arranged on the rotating column, the fan plate is located in the buckle box, and a plurality of guide edges are arranged on the fan plate, and the plurality of guide edges are scatteredly distributed.

[0010] Furthermore, an eccentric wheel is eccentrically arranged on the main shaft, an outer ring is rotatably sleeved on the outer wall of the eccentric wheel, a first connecting rod is rotatably connected to the outer ring, a rack is rotatably connected to the bottom of the first connecting rod, the rack slides vertically on the side wall of the back plate, a tooth groove is opened on the outer wall of the rotating column, and the rack meshes with the teeth in the tooth groove.

[0011] Furthermore, a transverse push plate is slidably inserted into the bottom of the back plate, and the transverse push plate is rotationally connected to the bottom of the rack through an inclined second connecting rod.

[0012] The beneficial effects of the present invention are: Through the swinging structure and the uniquely designed screen, the feed particles can be moved left and right and tumbled back and forth on the screen, so that the feed particles can quickly find the corresponding screen holes and fall off the screen, which greatly increases the chances of small particles in the feed contacting the screen holes, thereby improving the screening efficiency; the structure of the present invention can discharge the screened materials separately to avoid mutual interference, and can realize the working mode of continuous feeding and discharging, thereby realizing the function of continuous screening, reducing manual operation and improving the level of production automation; due to the use of two-way tumbling motion, the interaction between the particles is more sufficient, which helps to separate fine particles from large particles and fall through the screen holes. In addition, the rolling of the material also helps to prevent large particles from occupying the screen hole position for a long time, reducing the occurrence of blockage, and further improving the screening accuracy; in summary, the technical solution has made effective improvements to the problems existing in the existing screening equipment, which not only improves the working efficiency and quality of feed screening, but also reduces labor intensity, enhances the practicability and reliability of the equipment, and provides strong support for large-scale laying hen farming. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A schematic diagram of the structure from another perspective; Figure 3 Schematic diagram of the structure of the U-shaped frame and the screen in the embodiment of the present invention; Figure 4 yes Figure 2 Schematic diagram of the cross-section structure; Figure 5 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle buckle box; Figure 6 yes Figure 5 Structural diagram of the swing structure.

[0015] Reference numerals: 1. Top plate; 2. U-shaped frame; 3. Screen; 4. Reinforcement ribs; 5. Back plate; 6. Feed pipe; 7. Buckle box; 8. Buckle cover; 9. Tee pipe; 10. Oblique airway; 11. Vertical airway; 12. Discharge port; 13. Smoothing area; 14. Flanging area; 15. Reinforcement frame; 16. Guide rail; 17. Main shaft; 18. Drive wheel; 19. Swing frame; 20. Eccentric column; 21. Telescopic rod; 22. Main motor; 23. Rotating column; 24. Fan plate; 25. Guide ribs; 26. Eccentric wheel; 27. Outer ring; 28. First connecting rod; 29. ​​Rack; 30. Tooth groove; 31. Push plate; 32. Second connecting rod. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0017] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0019] like Figures 1 to 6 As shown, a laying hen edible feed screening machine of the present invention comprises a top plate 1, two U-shaped frames 2 and a screen 3, the two U-shaped frames 2 are fixed at the bottom of the top plate 1, the opening of the U-shaped frame 2 is upward, and the U-shaped frame 2 is composed of an arc-shaped part located at the bottom and vertical parts located at the left and right sides, a slide groove consistent with the shape of the U-shaped frame 2 is opened on the side wall of the U-shaped frame 2, a reinforcement rib 4 is slidably arranged in the slide groove, the screen 3 is located between the two U-shaped frames 2, and the shape of the screen 3 is consistent with the shape of the U-shaped frame 2, and the front and rear ends of the screen 3 are respectively fixedly connected to the two reinforcement ribs 4; Among them, a back plate 5 is fixed on the inner side of a U-shaped frame 2, and the back plate 5 is fixedly connected to the top plate 1. The other U-shaped frame 2 serves as a discharge end. A feed pipe 6 for feeding material to the screen 3 is obliquely arranged on the back plate 5, and a swinging structure for making the screen 3 reciprocate along the track of the U-shaped frame 2 is arranged on the back plate 5.

[0020] In detail, the top plate 1 and the back plate 5 mainly play a supporting role. The back plate 5 is located on a U-shaped frame 2, and the U-shaped frame 2 serves as the feeding end, and the other U-shaped frame 2 serves as the discharging end. The U-shaped frame 2 can guide and support the screen 3 through the reinforcing ribs 4 and the slide grooves thereon. When the reinforcing ribs 4 move in the slide grooves, due to the limitations of the shape of the slide grooves, the reinforcing ribs 4 located in the arc-shaped part of the slide grooves need to be continuously deformed. Therefore, the reinforcing ribs 4 need to be made of soft metal materials that can be elastically deformed, such as leaf spring materials, steel strand materials, etc., so that the reinforcing ribs 4 can play an auxiliary supporting role for the screen 3 during movement. The screen 3 is also composed of an arc-shaped part on the lower side and vertical parts on the left and right sides. When the swing structure provides swinging power for the screen 3 through the two ends of the top of the screen 3, that is, one end of the screen 3 moves downward, The other end moves upward, the length of the vertical part on one side of the screen 3 decreases, and the length of the vertical part on the other side increases, and the screen 3 is transported from one side to the other side. When the two ends at the top of the screen 3 move in the opposite direction, the screen 3 is transported in the opposite direction. At this time, if there is granular feed on the arc-shaped part of the screen 3, the screen 3 will drive the granular feed to move synchronously. When the granular feed moves to a certain height position, the slope of the arc-shaped part of the screen 3 is too large, and the granular feed will roll down, thereby making the granular feed move left and right on the screen 3 while performing a two-way rolling motion, so that the granular feed can find the corresponding sieve holes on the screen 3 and fall off the screen 3, thereby realizing the screening work, and the large granular feed that cannot pass through the sieve holes on the screen 3 will automatically roll and be discharged toward the U-shaped frame 2 as the discharge end as the feed on the screen 3 gradually increases.

[0021] It should be pointed out that, due to the reciprocating motion of the screen 3, the pellet feed can be repeatedly moved until it moves to the corresponding screen hole position, and due to the rolling of the pellet feed, the bottom layer feed and the surface layer feed can be interchanged, thereby preventing large pellet feed from being located at the bottom layer due to its weight and blocking the screen holes.

[0022] Through the swinging structure and the uniquely designed screen 3, the feed particles can be moved left and right and tumbled back and forth on the screen 3, so that the feed particles can quickly find the corresponding screen holes and fall off the screen 3, which greatly increases the chance of small particles in the feed contacting the screen holes, thereby improving the screening efficiency; the structure of the present invention can discharge the screened materials separately to avoid mutual interference, and can realize the working mode of continuous feeding and discharging, thereby realizing the function of continuous screening, reducing manual operation and improving the level of production automation; due to the use of two-way tumbling motion, the interaction between the particles is more sufficient, which helps to separate fine particles from large particles and fall through the screen holes. In addition, the rolling of the material also helps to prevent large particles from occupying the screen hole position for a long time, reduce the occurrence of blockage, and further improve the screening accuracy; in summary, the technical solution has made effective improvements to the problems existing in the existing screening equipment, which not only improves the working efficiency and quality of feed screening, but also reduces labor intensity, enhances the practicability and reliability of the equipment, and provides strong support for large-scale laying hen farming.

[0023] Furthermore, the screen 3 is composed of a flattened area 13 and a flanged area 14, the flattened area 13 is connected to the reinforcing ribs 4 at the back plate 5, the flanged area 14 is located on the U-shaped frame 2 as the discharge end, and the flanged area 14 is flanged toward the outside.

[0024] In detail, the flat area 13 and the flange area 14 on the screen 3 are consistent in shape, and the flat area 13 serves as the main screening area. The flange area 14 is mainly provided to prevent the U-shaped frame 2 from blocking the discharge end, so as to facilitate the smooth discharge of large particle feed.

[0025] Furthermore, a buckle box 7 is provided inside the screen 3, and the buckle box 7 is fixed on the back plate 5. Buckle covers 8 are provided on both left and right sides of the outside of the screen 3. A three-way pipe 9 is provided between the two buckle covers 8, and the buckle covers 8 are fixed on the back plate 5. Among them, the buckle cover 8 is fitted with the outer wall of the screen 3, and the inner side of the buckle box 7 is provided with oblique air ducts 10 on the left and right sides and a vertical air duct 11 in the middle. The buckle cover 8 is aligned with the oblique air duct 10, and the buckle cover 8 can pass the screen 3 and discharge the air into the oblique air duct 10. The air in the oblique air duct 10 flows downward through the vertical air duct 11, and a discharge port 12 for discharging is opened on the side wall of the buckle box 7.

[0026] In detail, the three-way pipe 9 can supply air to the two buckle covers 8 on the left and right sides at the same time. The two buckle covers 8 can allow air to pass through the screen 3. At this time, the air flows from the outside of the screen 3 to the inside of the screen 3, that is, the air recoils the screen 3. When the part of the screen 3 that has been screened moves to between the buckle cover 8 and the inclined air channel 10, the recoil-treated air can clean this part of the screen 3, so that the particles blocked on the sieve holes of the screen 3 can be separated from the sieve holes, thereby improving the air permeability of the screen 3. The air entering the inclined air channel 10 can flow downward in the vertical air channel 11, and part of the air passes downward through the screen 3 and is discharged. At this time, this part of the air is forward flow air, which can help small particle feed to pass through the sieve holes smoothly and quickly, and the remaining part of the air can be discharged through the discharge port 12 and the feed pipe 6.

[0027] It should be pointed out that the output end of the feed pipe 6 is located inside the buckle box 7 , so the feed particles are screened in the buckle box 7 , and the feed particles only move in the vertical air channel 11 and will not move into the inclined air channel 10 .

[0028] Furthermore, the screen 3 is inclined toward the U-shaped frame 2 serving as the discharge end.

[0029] In detail, in order to allow the large-particle feed to move smoothly toward the discharge port 12 without accumulating on the screen 3, the screen 3 needs to be tilted, that is, the arc-shaped part of the screen 3 needs to be tilted at a certain angle toward the U-shaped frame 2 serving as the discharge end, so that the gravity of the feed particles can be utilized to naturally move toward the discharge port 12 and be discharged. At this time, the movement trajectory of the large-particle feed on the screen 3 is a comprehensive movement mode of swinging left and right and rolling down obliquely.

[0030] Furthermore, a reinforcement frame 15 is provided at both left and right ends of the top of the screen 3, and two guide rails 16 are vertically provided on the side wall of the back plate 5, and the reinforcement frame 15 is slidably mounted on the guide rails 16; The swing structure includes a main shaft 17 rotatably inserted on the back plate 5 and two transmission wheels 18 rotatably installed on the back plate 5, the two transmission wheels 18 are located on the left and right sides of the main shaft 17, and the main shaft 17 is connected to the transmission wheels 18 in a transmission manner. A swing frame 19 is sleeved on the main shaft 17, and the swing frame 19 consists of a circular hole area located in the middle and long groove areas located on the left and right sides. The swing frame 19 is rotatably installed on the main shaft 17 through the circular hole area. Eccentric columns 20 are slidably arranged in the two long groove areas of the swing frame 19. The two eccentric columns 20 are eccentrically installed on the two transmission wheels 18 respectively. Telescopic rods 21 are fixed at both ends of the swing frame 19, and the movable end of the telescopic rod 21 is rotatably installed on the reinforcing frame 15. A main motor 22 for providing power to the main shaft 17 is provided on the back plate 5.

[0031] In detail, when the main motor 22 drives the main shaft 17 to rotate, the main shaft 17 will drive the two transmission wheels 18 to rotate synchronously, the two transmission wheels 18 drive the two eccentric columns 20 to move synchronously, and the two eccentric columns 20 synchronously move the swing frame 19 to swing. The swing frame 19 reciprocates on the main shaft 17. The swing frame 19 can drive the reinforcement frame 15 to slide on the guide rail 16 through the telescopic rod 21, so that one reinforcement frame 15 can move upward while the other reinforcement frame 15 moves downward, that is, the two ends of the top of the screen 3 perform synchronous reverse reciprocating motion, thereby providing reciprocating motion power for the screen 3. The setting of the reinforcement frame 15 can enhance the strength of the end of the screen 3.

[0032] Furthermore, a rotating column 23 is rotatably embedded on the back plate 5 inside the buckle box 7, the axis of the rotating column 23 is coplanar with the back plate 5, one side of the rotating column 23 is exposed on one side of the back plate 5, and the other side of the rotating column 23 is exposed on the other side of the back plate 5, and a fan plate 24 is arranged on the rotating column 23, and the fan plate 24 is located in the buckle box 7, and a plurality of guide edges 25 are arranged on the fan plate 24, and the plurality of guide edges 25 are scatteredly distributed.

[0033] In detail, the feed particles discharged from the feed pipe 6 into the buckle box 7 can fall onto the fan plate 24. The multiple guide edges 25 on the fan plate 24 can disperse and guide the particles, thereby preventing the particles from accumulating on the screen 3. At the same time, when the rotating column 23 reciprocates, the fan plate 24 can fan up and down, so that the particles can be dispersed to different positions on the screen 3 through the edge of the fan plate 24, further improving the bulking effect.

[0034] Furthermore, an eccentric wheel 26 is eccentrically arranged on the main shaft 17, an outer ring 27 is rotatably sleeved on the outer wall of the eccentric wheel 26, a first connecting rod 28 is rotatably connected to the outer ring 27, a rack 29 is rotatably connected to the bottom of the first connecting rod 28, the rack 29 slides vertically on the side wall of the back plate 5, a tooth groove 30 is opened on the outer wall of the rotating column 23, and the rack 29 meshes with the teeth in the tooth groove 30.

[0035] In detail, when the main shaft 17 rotates, the main shaft 17 will push the rack 29 to move up and down through the eccentric wheel 26, the outer ring 27 and the first connecting rod 28, and the rack 29 will push the rotating column 23 to reciprocate on the back plate 5 through the tooth groove 30, thereby causing the fan plate 24 to fan up and down.

[0036] It should be pointed out that, in order to prevent the pellet feed from entering the tooth groove 30 , the tooth groove 30 may be arc-shaped and hidden at one side of the back surface of the back plate 5 .

[0037] Furthermore, a transverse push plate 31 is slidably inserted into the bottom of the back plate 5 , and the transverse push plate 31 is rotationally connected to the bottom of the rack 29 via an inclined second connecting rod 32 .

[0038] In detail, when the rack 29 moves up and down, it will push the horizontal push plate 31 to perform horizontal reciprocating motion through the second connecting rod 32. When the horizontal push plate 31 passes through the back plate 5 and moves into the buckle box 7, the end of the horizontal push plate 31 will push the large-particle feed near the root area of ​​the back plate 5 toward the discharge port 12, thereby preventing the feed from accumulating in the screen 3.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A laying hen feed screening machine, characterized in that: It includes a top plate, two U-shaped frames and a screen, the two U-shaped frames are fixed at the bottom of the top plate, the opening of the U-shaped frame is upward, and the U-shaped frame is composed of an arc-shaped part located at the bottom and vertical parts located at the left and right sides, a slide groove consistent with the shape of the U-shaped frame is opened on the side wall of the U-shaped frame, and a reinforcement rib is slidably arranged in the slide groove, the screen is located between the two U-shaped frames, and the shape of the screen is consistent with the shape of the U-shaped frame, and the front and rear ends of the screen are respectively fixedly connected to the two reinforcement ribs; Among them, a back plate is fixed on the inner side of a U-shaped frame, and the back plate is fixedly connected to the top plate. The other U-shaped frame serves as a discharge end. A feed pipe for feeding material to the screen is obliquely arranged on the back plate, and a swinging structure for making the screen reciprocate along the U-shaped frame track is arranged on the back plate.

2. The laying hen edible feed screening machine according to claim 1, characterized in that: The screen is composed of a flattened area and a flanged area, wherein the flattened area is connected to the reinforcing ribs at the back plate position, the flanged area is located on a U-shaped frame as a discharge end, and the flanged area is flanged toward the outside.

3. A laying hen edible feed screening machine according to claim 2, characterized in that: A buckle box is arranged inside the screen, and the buckle box is fixed on the back plate. Buckle covers are arranged on the left and right sides of the screen, and a three-way pipe is arranged between the two buckle covers, and the buckle covers are fixed on the back plate. Among them, the buckle cover is fitted with the outer wall of the screen, and the inner side of the buckle box is provided with oblique air ducts on the left and right sides and a vertical air duct in the middle. The buckle cover is aligned with the oblique air duct, and the buckle cover can pass the air through the screen and discharge it into the oblique air duct. The air in the oblique air duct flows downward through the vertical air duct, and a discharge port for discharging is opened on the side wall of the buckle box.

4. A laying hen edible feed screening machine according to claim 3, characterized in that: The screen is inclined toward the U-shaped frame as the discharge end.

5. A laying hen edible feed screening machine according to claim 4, characterized in that: The left and right ends of the top of the screen are provided with reinforcement frames, and two guide rails are vertically provided on the side wall of the back plate, and the reinforcement frames are slidably installed on the guide rails; The swing structure includes a main shaft rotatably inserted on the back plate and two transmission wheels rotatably installed on the back plate, the two transmission wheels are located on the left and right sides of the main shaft, and the main shaft is connected to the transmission wheels in a transmission manner. A swing frame is sleeved on the main shaft, and the swing frame consists of a circular hole area located in the middle and long groove areas located on the left and right sides. The swing frame is rotatably installed on the main shaft through the circular hole area, and eccentric columns are slidably arranged in the two long groove areas of the swing frame. The two eccentric columns are eccentrically installed on the two transmission wheels respectively, and telescopic rods are fixed at both ends of the swing frame, and the movable end of the telescopic rod is rotatably installed on the reinforcement frame. A main motor for providing power to the main shaft is arranged on the back plate.

6. A laying hen edible feed screening machine according to claim 5, characterized in that: A rotating column is rotatably embedded on the back plate inside the buckle box, the axis of the rotating column is coplanar with the back plate, one side of the rotating column is exposed on one side of the back plate, and the other side of the rotating column is exposed on the other side of the back plate. A fan plate is arranged on the rotating column, the fan plate is located in the buckle box, and a plurality of guide edges are arranged on the fan plate, and the plurality of guide edges are scatteredly distributed.

7. A laying hen edible feed screening machine according to claim 6, characterized in that: An eccentric wheel is eccentrically arranged on the main shaft, an outer ring is rotatably sleeved on the outer wall of the eccentric wheel, a first connecting rod is rotatably connected to the outer ring, a rack is rotatably connected to the bottom of the first connecting rod, the rack slides vertically on the side wall of the back plate, a tooth groove is opened on the outer wall of the rotating column, and the rack meshes with the teeth in the tooth groove.

8. The laying hen edible feed screening machine according to claim 7, characterized in that: A transverse push plate is slidably inserted into the bottom of the back plate, and the transverse push plate is rotationally connected to the bottom of the rack through an inclined second connecting rod.

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