Efficient screening device for livestock bulk feed

Abstract

The invention discloses an efficient screening device for livestock bulk feed, relates to the field of feed screening, and aims to solve the problems that an existing feed screening device is long in working time consumption and low in screening efficiency, and the hardness of feed particles can be reduced in the screening process, the efficient screening device comprises a box body, a feeding hopper is arranged on the box body, and a discharging roller is rotationally connected to the lower portion of the feeding hopper; a filter cavity is formed in the box body below the blanking roller, a material scattering disc is rotationally connected in the filter cavity and is positioned below the blanking roller, a distributor is matched below the material scattering disc, the distributor is positioned in the box body and is fixedly connected with a bracket on the outer side of the box body, a discharging box communicated with the box body is arranged on the bracket, and a vibrating screen is fixedly connected in the discharging box; the feed screening device has the advantages that the spreading effect during feed screening is improved through the material dispersing disc, the screening efficiency is improved, collision and vibration to feed are reduced, and the pulverization rate of the feed is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of feed screening, in particular to a high-efficiency screening device for bulk livestock feed. Background Art

[0002] In the animal husbandry industry, bulk feed screening is an important part of feed processing and quality control. Although the existing feed screening mechanism can meet the screening needs to a certain extent, there are still many problems in practical application. First, in the existing feed screening process, the feed is often easily accumulated on the vibrating screen, and the feed cannot be evenly laid. The feed accumulation not only affects the uniformity of screening, but also reduces the screening efficiency; secondly, since the feed cannot be evenly distributed on the vibrating screen, the vibrating screen needs to work for a long time to complete the screening of the feed, which not only increases energy consumption, but also reduces production efficiency. At the same time, the long screening process also increases the risk of equipment wear and failure; finally, the feed stays on the vibrating screen for too long, and is subjected to long-term vibration and mutual collision, which will cause the hardness of the feed particles to decrease, thereby increasing the powdering rate of the feed. Too high a powdering rate not only affects the quality of the feed, but also increases the loss of the feed during storage and transportation. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a high-efficiency screening device for livestock bulk feed. Through this design, the problems of the existing feed screening device taking a long time to work, low screening efficiency and reduced feed particle hardness during the screening process are effectively solved.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: the present invention comprises a box body, a feed hopper is provided on the box body, a feed roller is rotatably connected below the feed hopper, a filter chamber is provided in the box body below the feed roller, a bulk material disc is rotatably connected in the filter chamber, the bulk material disc is located below the feed roller, a distributor is provided below the bulk material disc, the distributor is located in the box body, a bracket is fixedly connected to the outside of the box body, a discharge box connected to the box body is provided on the bracket, a vibrating screen is fixedly connected in the discharge box, a first discharge port is provided on the discharge box on the side of the vibrating screen, and a second discharge port is provided on the discharge box on the lower side of the vibrating screen; The distributor includes two symmetrically distributed ribs, a feed trough is provided between the two ribs, a filter trough is provided on the ribs, a distributor plate is provided under the ribs, first feed holes are provided on both sides of the distributor plate, the first feed holes are connected to the discharge box, a second feed hole is provided on the distributor plate between the two first feed holes, a guide plate is fixedly connected in the second feed hole, and a guide hole is provided on the box body on the side of the guide plate.

[0005] Preferably, the material guide plate is equipped with a spiral feeding rod, and the spiral feeding rod is rotatably connected to the box body. The box body is also provided with a synchronization mechanism for driving the unloading roller, the bulk material tray and the spiral feeding rod to move.

[0006] Preferably, the synchronization mechanism includes a first gear, the first gear is fixedly connected to the unloading roller, a second gear is fixedly engaged below the first gear, a support shaft is fixedly connected to the second gear, a reversing gear set is fixedly connected to the support shaft, the output end of the reversing gear set is fixedly connected to the bulk material tray, a third gear is engaged below the second gear, and the third gear is coaxially fixedly connected to the spiral feeding rod.

[0007] Preferably, the guide plate is a V-shaped structure, and filter holes are provided on the guide plates on both sides of the spiral feeding rod.

[0008] Preferably, there are two groups of feed hoppers, and two synchronously counter-rotating discharge rollers are arranged below the two groups of feed hoppers. The two discharge rollers are fixedly connected with mutually meshing synchronous gears, and the discharge rollers are provided with two symmetrically distributed receiving grooves.

[0009] Preferably, a cylindrical rod is fixedly connected to the bulk material tray, and a plurality of dividing strips distributed at equal angles are fixedly connected to the cylindrical rod, and the top surface of the dividing strips is an inclined surface.

[0010] Preferably, the vibrating screen is installed obliquely in the discharge box, a support rod is fixedly connected to the bracket, and a shock absorber is installed between the support rod and the discharge box.

[0011] Preferably, the shock absorber includes a pad block, which is fixedly connected to the support rod, a buffer spring is fixedly connected to the pad block, a clamping block is fixedly connected to the upper end of the buffer spring, the clamping block is equipped with a bayonet, the bayonet is fixedly connected to the discharge box, a vibration pulley is rotatably connected to the discharge box, a vibration pulley is equipped with a vibration cam on one side of the vibration pulley, and a driving pulley is equipped on one side of the vibration pulley.

[0012] Preferably, one side of the driving pulley is fixedly connected to a motor, a fixing plate is fixedly connected to the motor, the fixing plate is rotatably connected to the bracket, a sliding groove is provided at the other end of the fixing plate, a connecting rod is slidably connected to the sliding groove, the connecting rod is slidably connected to the bracket, a shock-absorbing spring applying downward force is sleeved on the connecting rod, the upper end of the connecting rod is fixedly connected to a limiting rod, and the lower end of the connecting rod is fixedly connected to a baffle.

[0013] Preferably, the two latches on the same side of the discharge box are not on the same horizontal plane, and the inclined angle of the two latches is the same as the inclination angle of the vibrating screen.

[0014] Compared with the prior art, the present invention has the following outstanding advantages: The present invention is provided with a feeding roller and a bulk material tray under the feeding hopper, the feeding roller pours the feed into the bulk material tray in batches of equal amounts, the rotating bulk material tray collides with the feed and evenly spreads the feed around, the feed is piled up after falling, the flatness of the feed during screening is improved, and the feed screening efficiency is improved.

[0015] The present invention installs a distributor in the bulk material tray, the filter tank in the distributor performs the primary screening on the feed, and a vibrating screen is provided below the distributor for secondary screening, so as to ensure that oversized and undersized impurities in the feed are screened out and the feed screening effect is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a rear view structural schematic diagram of the present invention.

[0018] Figure 3 It is a schematic diagram of the connection structure of the synchronization mechanism of the present invention.

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the box body of the present invention.

[0020] Figure 5 It is a schematic diagram of the connection and matching structure of the unloading roller of the present invention.

[0021] Figure 6 It is a schematic diagram of the bulk material tray connection structure of the present invention.

[0022] Figure 7 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 8 It is a schematic diagram of the forward cross-sectional structure of the box body of the present invention.

[0024] Fig. 9 It is a schematic diagram of the connection structure of the vibrating screen of the present invention.

[0025] Fig.10 It is a schematic diagram of the connection structure of the reversing gear set of the present invention.

[0026] Fig.11 It is a schematic diagram of the connection structure of the discharge box of the present invention.

[0027] Fig.12 It is a schematic diagram of the motor connection structure of the present invention.

[0028] Numbers in the figure: 1, box body; 2, feed hopper; 3, feed roller; 4, filter chamber; 5, bulk material tray; 6, distributor; 601, rib plate; 602, filter tank; 603, distributor plate; 604, first feed hole; 605, second feed hole; 606, guide plate; 607, guide hole; 608, spiral feed rod; 609, filter hole; 7, bracket; 8, discharge box; 9, vibrating screen; 10, first discharge port; 11, second discharge port; 12, first tooth wheel; 13, second gear; 14, support shaft; 15, reversing gear set; 16, third gear; 17, synchronous gear; 18, storage slot; 19, cylindrical rod; 20, spacer; 21, support rod; 22, pad; 23, buffer spring; 24, block; 25, latch; 26, vibration pulley; 27, driving pulley; 28, motor; 29, fixing plate; 30, slide groove; 31, connecting rod; 32, shock-absorbing spring; 33, limit rod; 34, baffle. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Please see attached Figure 1-12 , the present embodiment is a high-efficiency screening device for bulk livestock feed: it includes a box body 1, a feed hopper 2 is provided on the box body 1, a feeding roller 3 is rotatably connected below the feeding hopper 2, a filter chamber 4 is provided in the box body 1 below the feeding roller 3, a bulk material plate 5 is rotatably connected in the filter chamber 4, the bulk material plate 5 is located below the feeding roller 3, a distributor 6 is provided below the bulk material plate 5, the distributor 6 is in the box body 1, a bracket 7 is fixedly connected to the outside of the box body 1, a discharge box 8 connected to the box body 1 is provided on the bracket 7, a vibrating screen 9 is fixedly connected in the discharge box 8, a first discharge port 10 is provided on the discharge box 8 on the side of the vibrating screen 9, and a second discharge port 11 is provided on the discharge box 8 at the lower side of the vibrating screen 9.

[0031] The box body 1 is located above the bracket 7. The box body 1 is a coverless and bottomless structure. The feed hopper 2 is located above the box body 1. The top of the feed hopper 2 is open. Bulk feed enters the box body 1 through the feed hopper 2. The opening below the feed hopper 2 is smaller than the diameter of the discharge roller 3. The discharge roller 3 seals the bottom of the feed hopper 2. The bulk feed in the feed hopper 2 enters the filter chamber 4 one by one as the discharge roller 3 rotates. Through the rotation of the discharge roller 3, on the one hand, the bulk feed is squeezed against each other at the bottom of the feed hopper 2 to cause blockage, and on the other hand, The bulk feed is fed into the filter chamber 4 in batches by the feed feed discharge roller 3, so as to avoid the bulk feed in the filter chamber 4 from being stacked too high. Too much bulk feed will affect the screening efficiency of the filter chamber 4. By feeding the bulk feed into the filter chamber 4 in batches, the screening efficiency of the filter chamber 4 can be guaranteed. The bulk feed tray 5 is located in the filter chamber 4, and the feed feed discharge roller 3 is located above the bulk feed tray 5. When the feed feed discharge roller 3 transports the bulk feed downward, the bulk feed tray 5 rotates synchronously, and the falling bulk feed contacts the rotating bulk feed tray 5. The bulk feed tray 5 has an oblique shear force on the bulk feed, thereby The bulk feed is evenly sprinkled into the filter chamber 4, which increases the distribution range of the bulk feed in the filter chamber 4, so that the bulk feed can be quickly filtered and screened in the filter chamber 4. A distributor 6 is provided under the bulk feed plate 5. The distributor 6 screens out large particles and some impurities that have not been granulated in the bulk feed. Feed particles that meet the specifications and some smaller impurities will enter the discharge box 8 through the distributor 6. The opening at the upper end of the discharge box 8 is larger than the opening at the lower end of the box body 1. The discharge box 8 is installed in the middle of the bracket 7. For the feed filtered by the box body 1 It falls into the storage box under the action of gravity. There is an inclined vibrating screen in the discharge box 8. The screen holes of the vibrating screen are smaller than the aperture of the standard feed particles. When the bulk feed enters the discharge box 8, the vibrating screen 9 in the discharge box 8 will retain the bulk feed that meets the standards above the vibrating screen 9. At the same time, the bulk feed above the vibrating screen 9 flows out from the first discharge port 10 under the action of gravity, and impurities smaller than the standard feed particles flow out from the second discharge port 11 through the screen holes of the vibrating screen 9, completing the screening of small particle impurities mixed in the bulk feed in the discharge box 8.

[0032] The distributor 6 includes two symmetrically distributed ribs 601, a feed trough is provided between the two ribs 601, a filter trough 602 is provided on the ribs 601, a distributor plate 603 is provided below the ribs 601, first feed holes 604 are provided on both sides of the distributor plate 603, the first feed holes 604 are connected to the discharge box 8, a second feed hole 605 is provided on the distributor plate 603 between the two first feed holes 604, a guide plate 606 is fixedly connected inside the second feed hole 605, and a guide hole 607 is provided on the box body 1 on the side of the guide plate 606.

[0033] The two ribs 601 on the distributor 6 are located on the left and right sides of the inner cavity of the box body 1. The upper end surfaces of the two ribs 601 are inclined surfaces. There is a feed trough between the two ribs 601. The feed trough is located directly below the bulk feed tray 5. A filter trough 602 is provided on the ribs 601. The filter trough 602 is a structure with a large opening and a small inner side, and the upper inclined surface of the ribs 601 is inclined toward the bottom of the feed trough. After the bulk feed tray 5 scatters the bulk feed on the ribs 601, the bulk feed slides downward along the ribs 601 under the action of its own gravity. When the bulk feed falls on the filter trough 602, when the diameter of the bulk feed is smaller than the diameter at the filter trough 602, the bulk feed enters downward into the distributor plate 603. The first discharge hole 604 of the filter 602 can prevent the bulk feed from being stuck in the filter 602 during the downward sliding process, thereby ensuring the stable filtration of the bulk feed by the filter 602. The first discharge hole 604 and the second discharge hole 605 on the dividing plate 603 can guide the preliminarily screened bulk feed, thereby ensuring that the screened feed enters a specific position.

[0034] In order to further avoid the accumulation of filtered materials at the guide plate 606 and improve the efficiency of discharging filtered materials from the guide hole 607, a spiral feeding rod 608 is installed in the guide hole 607, and the spiral tube feeding rod is rotatably connected to the box body 1, and the filtered materials are transported from the guide plate 606 to the guide hole 607 or even outside the box body 1 through rotation. In addition, in order to make the unloading roller 3, the bulk material tray 5 and the spiral feeding rod 608 move synchronously, the first gear 12 is coaxially fixedly connected to the unloading roller 3, the second gear 13 is installed on the support shaft 14 under the bulk material tray 5, and the third gear 16 is installed on the spiral feeding rod 608. The first gear 12, the second gear 13 and the third gear 16 are meshed in sequence. A driving motor 28 is installed on the first gear 12, and the first gear 12 is driven to rotate by the operation of the motor 28, and the rotation of the first gear 12 drives the unloading roller 3 rotates, the first gear 12 also drives the second gear 13 to rotate, the rotation of the second gear 13 drives the support shaft 14 to rotate, the reversing gear set 15 on the support shaft 14 refers to two mutually matched gear structures that can change the rotational torque of the support shaft 14, such as a worm gear structure or two mutually meshing bevel gear structures, the support shaft 14 drives the bulk material tray 5 to rotate through the rotation of the reversing gear set 15, thereby realizing the synchronous rotation of the bulk material tray 5 and the unloading roller 3, the second gear 13 will drive the third gear 16 to rotate while rotating, the third gear 16 drives the spiral feeding rod 608 to rotate, through the mutual meshing of the first gear 12, the second gear 13 and the third gear 16, drive the various components in the box body 1 to rotate synchronously, so that the various components in the box body 1 work together to improve the screening efficiency of bulk feed.

[0035] There are two symmetrically distributed receiving grooves 18 on the feeding roller 3, and the receiving grooves 18 are of a concave structure. When the feeding roller 3 rotates, the receiving grooves 18 are directly opposite to the top of the feeding hopper, and the bulk feed enters the receiving grooves 18. Then, as the feeding roller 3 rotates, the receiving grooves 18 begin to tilt downward, and the bulk feed falls from the receiving grooves 18 onto the bulk material tray 5. In this way, for each rotation of the feeding roller 3, the two receiving grooves 18 transport the feed downward on both sides. Furthermore, in order to improve the feeding efficiency, the feeding roller 3 is provided with two, and the receiving grooves 18 on the two feeding rollers 3 are staggered. The two feeding rollers 3 complete synchronous reverse rotation through the synchronous gear 17. At this time, when the two feeding rollers 3 are working, they transport and absorb the feed to the bulk material tray 5 in an interlaced manner, which not only avoids excessive accumulation of feed, greatly improves the dispersion effect of the bulk material tray 5, but also does not affect the screening efficiency of the feed.

[0036] There is a cylindrical rod 19 in the middle of the bulk material tray 5, and a plurality of dividing strips 20 are arranged around the cylindrical rod 19. When the bulk material tray 5 rotates, the dividing strips 20 will rotate with the bulk material tray 5. When the feed falls, the side of the rotating dividing plate will collide with the feed, thereby generating a tangential force on the feed, so that the falling feed is hit against the non-cylindrical position of the filter chamber 4, so that the feed is evenly dispersed in the filter chamber 4.

[0037] The vibrating screen 9 is installed obliquely in the discharge box 8. This installation method helps the feed to be better dispersed and flowed during the screening process, and is also conducive to the smooth discharge of the screened feed. Four support rods 21 are fixedly connected to the bracket 7. The four support rods 21 are respectively located next to the four corners of the outer side of the storage box. The pads 22 on the support rods 21 are the basic part of the shock-absorbing component. The buffer spring 23 is fixedly connected to the pad 22 to absorb and buffer the vibration energy generated by the vibrating screen 9 and reduce the impact of vibration on the equipment and the surrounding environment. The clamping block 24 is fixedly connected to the upper end of the buffer spring 23 for cooperating with the bayonet 25. The bayonet 25 is fixedly connected to the storage box, and the bayonet 25 is clamped on the clamping block 24. Through the cooperation of the clamping block 24 and the bayonet 25 To realize the connection between the storage box and the support rod 21, a vibration pulley 26 is installed on the discharge box 8, and a belt is installed between the vibration pulley 26 and the driving pulley 27. The driving pulley 27 is driven by the motor 28. When the motor 28 is working, the vibration pulley 26 is driven to rotate through the driving pulley 27 and the belt. The rotation of the vibration pulley 26 drives the vibration cam to rotate. Since the weight around the vibration cam is not uniform, the inertial impulse of the vibration cam in each direction is different when it rotates, so that the discharge box 8 shakes. The shaking of the discharge box 8 can improve the screening effect of the vibrating screen 9 on the feed particles. At the same time, by replacing the structures such as the spring, the cushion block 22 and the clamping block 24, the influence of the vibration generated by the vibrating screen 9 on the equipment and the surrounding environment is reduced.

[0038] The motor 28 is located on the bracket 7. The motor 28 is fixedly connected to one side of the driving pulley 27, and serves as the power source of the screening device. The driving pulley 27 drives the vibration pulley 26 and the vibration cam to rotate, thereby generating a vibration effect. The fixed plate 29 is located between the motor 28 and the bracket 7. One end of the fixed plate 29 is rotatably connected to the bracket 7. The slide groove 30 is arranged at the other end of the hinge point of the fixed plate 29. The slide groove 30 is slidably connected to the connecting rod 31. The design of the slide groove 30 allows the connecting rod 31 to slide within a certain range on the fixed plate 29. The connecting rod 31 plays the role of connecting the fixed plate 29 and the bracket 7, and allows the two to have a certain relative movement when the motor 28 is running. The shock-absorbing spring 32 has a downward elastic force on the connecting rod 31 through the baffle 34. The shock-absorbing spring 32 helps to absorb and buffer the vibration generated when the motor 28 is running. kinetic energy, further reducing the impact of vibration on the equipment and the surrounding environment, the limit rod 33 is fixedly connected to the upper end of the connecting rod 31, and is used to limit the sliding range of the connecting rod 31 in the slide groove 30 to prevent it from sliding excessively and causing damage to the equipment. The length of the limit rod 33 is greater than the width of the slide groove 30; the machine drives the vibration pulley 26 and the vibration cam to rotate through the driving pulley 27, thereby generating a vibration effect to screen the feed. During the operation of the motor 28, due to the changes in vibration and load, a certain relative movement will be generated between the fixed plate 29 and the bracket 7, and the connecting rod 31 slides on the slide groove 30 and the bracket 7. At the same time, the shock-absorbing spring 32 absorbs and buffers the vibration energy, reducing the impact of vibration on the equipment and the surrounding environment. The setting of the limit rod 33 and the baffle 34 limits the sliding range of the connecting rod 31 to prevent it from sliding excessively and causing damage to the equipment.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient screening device for bulk livestock feed, characterized in that: It comprises a box body (1), the box body (1) is provided with a feed hopper (2), a feed roller (3) is rotatably connected below the feed hopper (2), a filter chamber (4) is provided in the box body (1) below the feed roller (3), a bulk material tray (5) is rotatably connected in the filter chamber (4), the bulk material tray (5) is located below the feed roller (3), a distributor (6) is provided below the bulk material tray (5), the distributor (6) is located in the box body (1), a bracket (7) is fixedly connected to the outside of the box body (1), a discharge box (8) connected to the box body (1) is provided on the bracket (7), a vibrating screen (9) is fixedly connected inside the discharge box (8), a first discharge port (10) is provided on the discharge box (8) on the side of the vibrating screen (9), and a second discharge port (11) is provided on the discharge box (8) below the vibrating screen (9); The distributor (6) comprises two symmetrically distributed ribs (601), a material discharge trough is provided between the two ribs (601), a filter trough (602) is provided on the ribs (601), a distributor plate (603) is provided below the ribs (601), first material discharge holes (604) are provided on both sides of the distributor plate (603), the first material discharge holes (604) are communicated with the discharge box (8), a second material discharge hole (605) is provided on the distributor plate (603) between the two first material discharge holes (604), a material guide plate (606) is fixedly connected inside the second material discharge hole (605), and a material guide hole (607) is provided on the box body (1) on the side of the material guide plate (606).

2. The high-efficiency screening device for bulk livestock feed according to claim 1, characterized in that: The guide plate (606) is equipped with a spiral feeding rod (608), and the spiral feeding rod (608) is rotatably connected to the box body (1). The box body (1) is also provided with a synchronization mechanism for driving the unloading roller (3), the bulk material tray (5) and the spiral feeding rod (608) to move.

3. The efficient screening device for bulk livestock feed according to claim 2, characterized in that: The synchronization mechanism comprises a first gear (12), the first gear (12) is fixedly connected to the unloading roller (3), a second gear (13) is fixedly meshed below the first gear (12), a support shaft (14) is fixedly connected to the second gear (13), a reversing gear set (15) is fixedly connected to the support shaft (14), an output end of the reversing gear set (15) is fixedly connected to the bulk material tray (5), a third gear (16) is meshed below the second gear (13), and the third gear (16) is coaxially fixedly connected to the spiral feeding rod (608).

4. The high-efficiency screening device for bulk livestock feed according to claim 2, characterized in that: The material guide plate (606) is a V-shaped structure, and filtering holes (609) are provided on the material guide plates (606) on both sides of the spiral feeding rod (608).

5. The efficient screening device for bulk livestock feed according to claim 1 or 3, characterized in that: There are two groups of feed hoppers (2), and two feeding rollers (3) are arranged below the two groups of feed hoppers (2) and rotate synchronously in opposite directions. The two feeding rollers (3) are fixedly connected with mutually meshing synchronous gears (17), and the feeding rollers (3) are provided with two symmetrically distributed receiving grooves (18).

6. The efficient screening device for bulk livestock feed according to claim 1, characterized in that: A cylindrical rod (19) is fixedly connected to the bulk material tray (5), and a plurality of dividing strips (20) distributed at equal angles are fixedly connected to the cylindrical rod (19), wherein the top surface of the dividing strips (20) is an inclined surface.

7. The efficient screening device for bulk livestock feed according to claim 1, characterized in that: The vibrating screen (9) is obliquely installed in the discharge box (8), a support rod (21) is fixedly connected to the bracket (7), and a shock absorber is installed between the support rod (21) and the discharge box (8).

8. The high-efficiency screening device for bulk livestock feed according to claim 7, characterized in that: The shock absorber comprises a cushion block (22), the cushion block (22) being fixedly connected to the support rod (21), a buffer spring (23) being fixedly connected to the cushion block (22), a clamping block (24) being fixedly connected to the upper end of the buffer spring (23), a clamping pin (25) being matched with the clamping block (24), the clamping pin (25) being fixedly connected to the discharge box (8), a vibration pulley (26) being rotatably connected to the discharge box (8), a vibration cam being matched with one side of the vibration pulley (26), and a driving pulley (27) being matched with one side of the vibration pulley (26).

9. The high-efficiency screening device for bulk livestock feed according to claim 8, characterized in that: A motor (28) is fixedly connected to one side of the driving pulley (27), a fixing plate (29) is fixedly connected to the motor (28), the fixing plate (29) is rotatably connected to the bracket (7), a sliding groove (30) is provided at the other end of the fixing plate (29), a connecting rod (31) is slidably connected to the sliding groove (30), the connecting rod (31) is slidably connected to the bracket (7), a shock absorbing spring (32) for applying downward force is sleeved on the connecting rod (31), a limiting rod (33) is fixedly connected to the upper end of the connecting rod (31), and a blocking plate (34) is fixedly connected to the lower end of the connecting rod (31).

10. The efficient screening device for bulk livestock feed according to claim 8 or 9, characterized in that: The two latches (25) on the same side of the discharge box (8) are not on the same horizontal plane, and the inclined angle of the two latches (25) is the same as the inclined angle of the vibrating screen (9).

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