Livestock feeding granular feed automatic screening device and preparation equipment

Abstract

The present application relates to the technical fields of animal feed preparation, in particular to a granular feed automatic screening device and preparation equipment for livestock feeding, which comprises a rack, a screening cylinder, a driving device and a knocking device; the driving device comprises a main shaft, a cam and a rotary driving assembly, the main shaft is rotationally arranged on the rack, the cam is sleeved on the main shaft, the rotary driving assembly is used for driving the main shaft to rotate, the screening cylinder is connected with the cam, and the axis of the screening cylinder deviates from the axis of the main shaft; a screen hole is formed in the screening cylinder; the knocking device is used for knocking the screening cylinder. The present application realizes the function of knocking the screening cylinder during the screening process, the vibration generated by the knocking achieves the effect of avoiding the granular feed from blocking the screen hole, thereby improving the stability of the feed screening, and solving the technical problem that the traditional screening device affects the feed separation due to the feed blocking the screen hole during the working process.

Description

Technical Field

[0001] This invention relates to the technical field of animal feed preparation, specifically to an automated screening device and preparation equipment for pelleted feed used in livestock feeding. Background Technology

[0002] Currently, the primary method for screening stones in feed is through sieves. However, our company has discovered several drawbacks in long-term practical application. Because the pore size of the sieve is fixed, fine particles and impurities in the feed gradually accumulate on the sieve surface during prolonged filtration, leading to clogging. Once clogged, the actual filtration efficiency is severely affected, hindering feed screening and increasing production time and costs. Furthermore, the filtered material is complex, containing not only stones but also clumps of feed. Directly dumping this material results in feed waste, while additional processing increases equipment and process costs, reduces production efficiency, and negatively impacts the company's production and operations.

[0003] To this end, Chinese Patent CN120460270B discloses a livestock feed preparation device, which drives a screen cylinder to rotate via a drive shaft. During the rotation of the screen cylinder, the relative motion between the drive wheel and the interior of the outer shell is utilized. When the drive wheel rotates with the screen cylinder and generates relative displacement with the interior of the outer shell, the drive wheel rotates and transmits and distributes power through a transmission gear set, enabling the active and driven screen rollers to move synchronously in opposite directions. When feed enters the screen cylinder, under the rotation of the active and driven screen rollers, feed that fits the spacing between them can pass through this gap smoothly and be screened out. However, larger stones or clumps of particles cannot pass through this gap and are retained inside the screen cylinder. At the same time, the active and driven screen rollers continue to rotate, and this continuous motion generates a force that drives the filter material (i.e., the large particles that were not screened out) that is blocked between them, causing it to tend to move away from the filtration area. This trend effectively avoids the accumulation of filter material in the filtration section, preventing clogging and ultimately achieving a clogging-resistant filtration effect. This not only ensures the continuity and stability of the screening process but also greatly improves screening efficiency, reducing the time and labor costs associated with downtime for cleaning due to clogging.

[0004] However, the aforementioned comparative documents still fail to completely solve the technical problem of feed separation caused by feed clogging the screen holes during operation of traditional screening devices. First, their anti-clogging design is not targeted enough, only avoiding the accumulation of filter material in the gap between the active and driven screen rollers, without designing a special anti-clogging structure for the screen holes of the screen cylinder. Fine particles in the feed easily adhere to the inner wall of the screen holes, causing screen clogging after long-term operation, hindering the effective separation of feed from stones. Second, the device lacks real-time unclogging capability and is not equipped with an auxiliary unclogging mechanism. Once the screen holes are clogged, the problem cannot be resolved simultaneously, and the machine must be stopped for treatment, thereby interrupting the screening process and affecting the continuity and efficiency of feed separation. It fails to fundamentally solve the feed separation problem caused by screen clogging. Summary of the Invention

[0005] To address the aforementioned issues, an automated screening device and preparation equipment for livestock feed pellets are provided. This device solves the technical problem of feed separation being affected by feed clogging the screen holes during operation in traditional screening devices by using a frame, screening cylinder, drive device, and striking device.

[0006] To address the problems of existing technologies, this invention provides an automated pellet feed screening device for livestock feeding, comprising a frame, a screening cylinder, a drive unit, and a striking device. The drive unit includes a main shaft, a cam, and a rotary drive assembly. The main shaft is rotatably mounted on the frame, the cam is sleeved on the main shaft, and the rotary drive assembly drives the main shaft to rotate. The screening cylinder is connected to the cam, and the axis of the screening cylinder is offset from the axis of the main shaft. The screening cylinder has sieve holes. The striking device is used to strike the screening cylinder.

[0007] Preferably, the striking device includes a mounting plate and a first transmission assembly; the mounting plate is provided with a striking rod for striking the screening cylinder, and the screening cylinder is provided with ribs for cooperating with the striking rod; the two ends of the first transmission assembly are respectively connected to the mounting plate and the screening cylinder for transmission.

[0008] Preferably, the frame is provided with an auxiliary control mechanism, which includes a locking component, a control component, and a base plate; the base plate is provided with a first elastic element connected to the mounting plate; in the working state, when the screening cylinder moves to the bottom, the locking component restricts the mounting plate from moving upward, and when the screening cylinder rotates to the top, the control component releases the locking component from restricting the movement of the mounting plate.

[0009] Preferably, the first transmission assembly includes a first support, a connecting seat, a vertical rod, a first shaft, and a mounting frame; the first support is connected to the mounting plate, the connecting seat is drivenly connected to the first support, and the vertical rod is connected to the connecting seat; the first shaft is connected to the vertical rod, the mounting frame is rotatably connected to the screening cylinder, and the mounting frame is provided with a linear guide rail that slides with the first shaft.

[0010] Preferably, the mounting frame is provided with at least two positioning posts.

[0011] The frame has two telescopic rods hinged inside, and the line connecting the hinge points of the two telescopic rods extends vertically; the movable rods of the two telescopic rods are respectively connected to two positioning posts; the telescopic rods are provided with a first connecting rod, and the two ends of the first connecting rod are respectively hinged to the two telescopic rods.

[0012] Preferably, the connecting seat is provided with a second elastic element, and the two ends of the second elastic element are respectively connected to the first support and the connecting seat.

[0013] Preferably, the locking assembly includes a second support, a locking block, and a third elastic element; the second support is disposed on the frame; the locking block is slidably mounted on the second support, and the side of the locking block near the screening cylinder has an arc surface; the two ends of the third elastic element are respectively connected to the locking block and the second support.

[0014] Preferably, the control component includes an extension block and a crossbar; the extension block is connected to the locking block, and an inclined guide groove is provided on the extension block; the crossbar is vertically and flexibly mounted on a second support, and a push rod and a fourth elastic element are provided on the crossbar, the push rod abuts against the groove wall of the inclined guide groove, and the two ends of the fourth elastic element are respectively connected to the crossbar and the second support; a second transmission component is provided on the frame, and the two ends of the second transmission component are respectively connected to the crossbar and the connecting seat for transmission; when the crossbar moves down, the push rod presses against the groove wall of the inclined guide groove to push the locking block to retract.

[0015] Preferably, the second transmission assembly includes a fixed plate, a second connecting rod, and a slide; the fixed plate is fixedly mounted on the frame; the second connecting rod is provided with a first hinge shaft and a second hinge shaft, the first hinge shaft is hinged to the fixed plate, the slide is provided with a first linear guide groove, the second hinge shaft is slidably engaged with the first linear guide groove, and the second connecting rod is provided with a second linear guide groove; a second shaft member is connected to the crossbar and is slidably engaged with the second linear guide groove.

[0016] A pellet feed preparation device for livestock feeding includes an automated pellet feed screening device for livestock feeding; the frame is equipped with a feed hopper, a discharge pipe and a discharge hopper; in the working state, the feed fed from the feed hopper enters the screening cylinder, the feed that passes through the screen holes of the screening cylinder falls into the discharge hopper under the action of gravity, and the feed that does not pass through the screen holes is discharged from the discharge pipe.

[0017] The advantages of this invention compared to the prior art are:

[0018] 1. This invention achieves the function of striking the screening cylinder during the screening process through a frame, screening cylinder, drive device, and striking device. The vibration generated by the striking prevents the pelleted feed from clogging the screen holes, thereby improving the stability of feed screening and solving the technical problem of feed separation being affected by feed clogging during the operation of traditional screening devices. The eccentric rotation structure of the drive device ensures high screening efficiency, and the synchronous striking of the striking device achieves an anti-clogging effect, allowing the screening of pelleted feed to proceed continuously and stably. After screening is completed, the rotary drive assembly and striking device are turned off, and the screened feed can be removed.

[0019] 2. This invention, through the cooperation of a mounting plate, a striking rod, ribs, and a first transmission assembly, achieves the function of automatically striking the screening cylinder as it moves. This eliminates the need for additional power to drive the striking device, improving the overall automation level of the device and solving the technical problems of traditional striking devices requiring additional power and having poor alignment between striking and screening. During the rotation of the screening cylinder, the first transmission assembly drives the mounting plate to move synchronously. The striking rod on the mounting plate moves with the mounting plate. Due to the eccentric rotation of the screening cylinder, and controlled by the first transmission assembly, the striking rod repeatedly impacts the ribs on the screening cylinder, continuously striking it and vibrating to dislodge feed particles stuck in the screen holes, preventing clogging. The ribs also prevent the screening cylinder from deforming and being damaged during collisions.

[0020] 3. This invention, through the cooperation of the locking component and the control component, combined with the eccentric rotation of the screening cylinder, realizes the function of locking and unlocking the mounting plate as needed and enhancing the striking force of the striking rod. This achieves the effects of improving the anti-clogging effect of striking, avoiding ineffective striking, and optimizing the linkage stability of the device. It solves the technical problems of uneven striking force, many ineffective striking, and difficulty in completely shaking off the feed clogging the screen holes in traditional striking devices. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of an automated screening device and preparation equipment for livestock feed pellets according to the present invention.

[0022] Figure 2 This is a three-dimensional schematic diagram of the screening cylinder, driving device, striking device, and auxiliary control mechanism of an automated screening device and preparation equipment for livestock feed pellets according to the present invention.

[0023] Figure 3 This is a three-dimensional schematic diagram of the screening cylinder and frame of an automated screening device and preparation equipment for livestock feed pellets according to the present invention.

[0024] Figure 4 This is a three-dimensional schematic diagram of the screening cylinder, striking device, and auxiliary control mechanism of an automated screening device and preparation equipment for livestock feed pellets according to the present invention.

[0025] Figure 5 This is a three-dimensional cross-sectional schematic diagram of the striking device and auxiliary control mechanism of an automated screening device and preparation equipment for livestock feed pellets according to the present invention.

[0026] Figure 6 This is the invention Figure 5 A magnified view of a portion of point A in the middle.

[0027] Figure 7 This is a three-dimensional schematic diagram of the first transmission component and auxiliary control mechanism of an automated screening device and preparation equipment for livestock feed pellets according to the present invention.

[0028] Figure 8 This is a three-dimensional exploded view of the locking and control components of an automated screening device and preparation equipment for livestock feed pellets according to the present invention.

[0029] Figure 9 This is a three-dimensional schematic diagram of the connecting seat, upright, and second transmission component of an automated screening device and preparation equipment for livestock feed pellets according to the present invention.

[0030] Figure 10 This is the invention Figure 9 A magnified view of a portion of point B in the middle.

[0031] The diagram is labeled as follows: 1. Frame; 11. Feed hopper; 12. Discharge pipe; 13. Drop hopper; 2. Screening cylinder; 21. Rib; 3. Drive unit; 31. Main shaft; 32. Cam; 33. Rotary drive assembly; 4. Striking device; 41. Mounting plate; 411. Striking rod; 42. First transmission assembly; 421. First support; 422. Connecting seat; 423. Upright pole; 424. First shaft; 425. Mounting frame; 426. Second elastic element; 43. Positioning column; 44. 45. Telescopic rod; 5. First connecting rod; 6. Auxiliary control mechanism; 7. Locking assembly; 8. Second support; 9. Locking block; 10. Third elastic element; 11. Control assembly; 12. Extension block; 13. Inclined guide groove; 14. Crossbar; 15. Push rod; 16. Fourth elastic element; 17. Second shaft; 18. Base plate; 19. First elastic element; 20. Second transmission assembly; 21. Fixed plate; 22. Second connecting rod; 23. Slide. Detailed Implementation

[0032] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figures 1 to 3An automated pellet feed screening device for livestock feeding includes a frame 1, a screening cylinder 2, a drive unit 3, and a striking device 4. The drive unit 3 includes a main shaft 31, a cam 32, and a rotary drive assembly 33. The main shaft 31 is rotatably mounted on the frame 1, the cam 32 is sleeved on the main shaft 31, and the rotary drive assembly 33 is used to drive the main shaft 31 to rotate. The screening cylinder 2 is connected to the cam 32, and the axis of the screening cylinder 2 is offset from the axis of the main shaft 31. The screening cylinder 2 has sieve holes. The striking device 4 is used to strike the screening cylinder 2.

[0034] This invention achieves the function of striking the screening cylinder 2 during the screening process through the frame 1, screening cylinder 2, driving device 3, and striking device 4. The vibration generated by the striking avoids the clogging of the screen holes by the pelleted feed, thereby improving the stability of feed screening and solving the technical problem of feed separation being affected by feed clogging of the screen holes during the operation of traditional screening devices. When using this device for pellet feed screening, the pellet feed is fed into the screening cylinder 2, and the rotary drive assembly 33 is activated. The rotary drive assembly 33 drives the main shaft 31 on the frame 1 to rotate. The cam 32, which is sleeved on the main shaft 31, rotates synchronously with the main shaft 31. Because the screening cylinder 2 is connected to the cam 32 and the axis of the screening cylinder 2 is offset from the axis of the main shaft 31, the rotation of the cam 32 drives the screening cylinder 2 to perform an eccentric rotational motion. During the eccentric rotation, the screening cylinder 2 automatically screens the pellet feed inside. At the same time, the striking device 4 continuously strikes the screening cylinder 2. The vibration generated by the striking is transmitted to the screen holes of the screening cylinder 2, shaking off the pellet feed stuck in the screen holes and preventing the screen holes from clogging and affecting the screening process. The eccentric rotation structure of the drive assembly 3 ensures the high efficiency of screening, and the synchronous striking of the striking device 4 achieves the anti-clogging effect, allowing the pellet feed screening to proceed continuously and stably. After screening is completed, the rotary drive assembly 33 and the striking device 4 are turned off, and the screened feed can be removed.

[0035] Reference Figures 2 to 4 The striking device 4 includes a mounting plate 41 and a first transmission assembly 42; the mounting plate 41 is provided with a striking rod 411 for striking the screening cylinder 2, and the screening cylinder 2 is provided with ribs 21 for cooperating with the striking rod 411; the two ends of the first transmission assembly 42 are respectively connected to the mounting plate 41 and the screening cylinder 2.

[0036] The present invention achieves the function of automatically striking the screening cylinder 2 as it moves by means of the cooperation of the mounting plate 41, the striking rod 411, the rib 21 and the first transmission component 42. This achieves the effect of not needing additional power to drive the striking device 4, thus improving the overall automation level of the device. It solves the technical problems of the traditional striking device 4 requiring additional power and poor matching degree between striking and screening. When using this device for screening, the pelleted feed is fed into the screening cylinder 2. The rotary drive assembly 33 is started to drive the main shaft 31 on the frame 1 to rotate. The cam 32 drives the screening cylinder 2 to perform eccentric rotational motion for screening. During the rotation of the screening cylinder 2, the mounting plate 41 is driven to move synchronously through the first transmission assembly 42. The striking rod 411 on the mounting plate 41 moves with the mounting plate 41. Because the screening cylinder 2 performs eccentric rotational motion and is controlled by the first transmission assembly 42, the screening cylinder 2 only collides with the striking rod 411 when it rotates to the top and bottom. Therefore, two ribs 21 are set on the screening cylinder 2 so that the striking rod 411 repeatedly impacts the ribs 21 on the screening cylinder 2, continuously striking the screening cylinder 2 and vibrating and dislodging the pelleted feed stuck in the screen holes, thus preventing the screen holes from clogging. The ribs 21 are also set to prevent the screening cylinder 2 from deforming and being damaged during the collision.

[0037] Reference Figures 2 to 4 The frame 1 is equipped with an auxiliary control mechanism 5, which includes a locking component 51, a control component 52, and a base plate 53. The base plate 53 is provided with a first elastic element 531 connected to the mounting plate 41. In the working state, when the screening cylinder 2 moves to the bottom, the locking component 51 restricts the mounting plate 41 from moving upward. When the screening cylinder 2 rotates to the top, the control component 52 releases the movement restriction of the mounting plate 41 by the locking component 51.

[0038] This invention, through the cooperation of locking component 51 and control component 52, combined with the eccentric rotational motion of screening cylinder 2, realizes the function of locking and unlocking mounting plate 41 as needed and enhancing the striking force of striking rod 411. This achieves the effects of improving the anti-clogging effect of striking, avoiding ineffective striking, and optimizing the linkage stability of the device. It solves the technical problems of uneven striking force, many ineffective striking, and difficulty in completely shaking off feed clogging the screen holes in traditional striking device 4. When using this device for screening, the rotary drive assembly 33 drives the main shaft 31 to rotate, and the cam 32 drives the screening cylinder 2 to rotate eccentrically. The screening cylinder 2 is linked to the mounting plate 41 through the first transmission assembly 42. In the working state, when the screening cylinder 2 rotates towards the bottom with the eccentric movement, the first elastic element 531 is compressed, causing the first elastic element 531 to accumulate elastic potential energy. When the mounting plate 41 moves to the bottom, the locking assembly 51 is activated and restricts the mounting plate 41 from moving upward. At the same time, the screening cylinder 2 actively contacts and collides with the striking rod 411 to perform a small-amplitude strike. When the screening cylinder 2 continues to rotate to the top, the control assembly 52 triggers and releases the locking assembly 51 from restricting the movement of the mounting plate 41. Under the action of the elastic potential energy of the first elastic element 531, the mounting plate 41 moves quickly, causing the striking rod 411 on it to violently strike the ribs 21 on the screening cylinder 2, greatly increasing the striking force and more efficiently shaking off the clogging feed pellets in the screen holes. This cycle continues as the screening cylinder 2 rotates, alternating between small and large-amplitude taps to make the tapping action more targeted and the force more uniform. It can achieve enhanced tapping without additional power, perfectly coordinating with the screening action and the tapping device 4, and operating automatically throughout the process, further ensuring the smoothness and efficiency of pellet feed screening.

[0039] Reference Figures 4 to 7 The first transmission assembly 42 includes a first support 421, a connecting seat 422, a vertical rod 423, a first shaft 424, and a mounting frame 425. The first support 421 is connected to the mounting plate 41, the connecting seat 422 is drivenly connected to the first support 421, and the vertical rod 423 is connected to the connecting seat 422. The first shaft 424 is connected to the vertical rod 423, and the mounting frame 425 is rotatably connected to the screening cylinder 2. The mounting frame 425 is provided with a linear guide rail that slides with the first shaft 424.

[0040] The present invention achieves the function of driving the mounting plate 41 to rise and fall during the rotation of the screening cylinder 2 through the cooperation of the first support 421, connecting seat 422, upright 423, first shaft 424, mounting frame 425 and linear guide rail of the first transmission component 42. When using this device for screening, the rotary drive assembly 33 drives the main shaft 31 to rotate, and the cam 32 drives the screening cylinder 2 to rotate eccentrically. The mounting frame 425, which is rotatably connected to the screening cylinder 2, moves synchronously with it. The linear guide rail on the mounting frame 425 slides with the first shaft 424. During the lifting and lowering process, the mounting frame 425 pushes the first shaft 424 to rise and fall through the linear guide rail. The first shaft 424 drives the upright 423 to move synchronously. The upright 423 is connected to the first support 421 through the connecting seat 422, which in turn drives the mounting plate 41 connected to the first support 421 to move. When the screening cylinder 2 moves to the bottom, the locking assembly 51 of the auxiliary control mechanism 5 restricts the mounting plate 41 from moving upward. The mounting plate 41 follows the screening cylinder 2 through the transmission assembly to complete the accumulation of potential energy. When the screening cylinder 2 rotates to the top, the control assembly 52 releases the locking restriction. Under the action of potential energy, the mounting plate 41 quickly resets through the transmission assembly, causing the striking rod 411 to violently strike the rib 21 on the screening cylinder 2.

[0041] Reference Figures 3 to 6 The mounting frame 425 is provided with at least two positioning posts 43.

[0042] Two telescopic rods 44 are hinged inside the frame 1, and the line connecting the hinge points of the two telescopic rods 44 extends in the vertical direction; the movable rods of the two telescopic rods 44 are respectively connected to two positioning posts 43; a first connecting rod 45 is provided on the telescopic rod 44, and the two ends of the first connecting rod 45 are respectively hinged to the two telescopic rods 44.

[0043] This invention achieves the function of keeping the mounting frame 425 in a vertical state as it rotates with the screening cylinder 2 through the positioning column 43, the double telescopic rods 44, and the first connecting rod 45. This ensures the stability of the striking device 4 and prevents transmission misalignment and striking failure caused by the tilting of the mounting frame 425. When using this device for screening, the screening cylinder 2 rotates eccentrically, and the mounting frame 425, which is rotatably connected to the screening cylinder 2, moves synchronously. The positioning column 43 on the mounting frame 425 drives the movable rods of the two telescopic rods 44 to extend and retract synchronously. The two telescopic rods 44 are hinged inside the frame 1, and the line connecting the hinge points extends vertically. The two ends of the first connecting rod 45 are respectively hinged to the two telescopic rods 44, forming a parallel linkage structure, which can synchronously adjust the extension and retraction range of the two telescopic rods 44. When the mounting frame 425 tilts due to the eccentric rotation of the screening cylinder 2, the first connecting rod 45 drives the two telescopic rods 44 to move synchronously. Through the cooperation of the movable rods and the positioning column 43, the mounting frame 425 is pulled, correcting the tilt angle of the mounting frame 425 and ensuring that it always remains vertical. The vertical position of the mounting frame 425 ensures that the linear guide rail on it and the first shaft 424 always slide precisely together, allowing the power transmission link composed of the first support 421, the connecting seat 422, and the upright 423 to be transmitted smoothly, thereby driving the mounting plate 41 and the striking rod 411 to move stably.

[0044] Reference Figures 5 to 7 The connecting seat 422 is provided with a second elastic element 426, and the two ends of the second elastic element 426 are respectively connected to the first support 421 and the connecting seat 422.

[0045] This invention achieves the function of buffering the force during the striking transmission process by setting a second elastic element 426 on the connecting seat 422, thereby avoiding the rigid compression between the striking rod 411 and the rib 21. When using this device for screening, when the striking rod 411 moves towards the rib 21 with the movement of the mounting plate 41 and impacts it, the rib 21 squeezes and pushes the striking rod 411, compressing the second elastic element 426. In turn, the second elastic element 426 buffers the force transmitted by the power, making the impact between the striking rod 411 and the rib 21 elastic, avoiding direct rigid compression. After the impact is completed, the second elastic element 426 resets, causing the striking rod 411 and the rib 21 to separate smoothly. This ensures that the vibration generated by the striking can effectively shake off the granular feed in the screen holes, reduces the wear of the striking rod 411 and the rib 21 caused by the impact, and prevents transmission jamming due to rigid compression, ensuring that the power linkage of the first transmission component 42 is always smooth.

[0046] Reference Figure 4 , Figure 5 and Figure 8The locking assembly 51 includes a second support 511, a locking block 512, and a third elastic member 513; the second support 511 is mounted on the frame 1; the locking block 512 is slidably mounted on the second support 511, and the side of the locking block 512 near the screening cylinder 2 has an arc surface; the two ends of the third elastic member 513 are respectively connected to the locking block 512 and the second support 511.

[0047] The present invention achieves the function of restricting the upward movement of the mounting plate 41 when the screening cylinder 2 rotates to the bottom by a locking assembly 51 consisting of a second support 511, a locking block 512 with an arc surface and a third elastic element 513. When using this device for screening, when the screening cylinder 2 rotates eccentrically to the bottom, it drives the mounting plate 41 to move in the locking direction. When the mounting plate 41 contacts the arc surface of the locking block 512, it squeezes the locking block 512, and the third elastic element 513 is compressed. When the screening cylinder 2 reaches the bottom, the mounting plate 41 completely passes through the locking block 512. The locking block 512 extends again under the elastic force of the third elastic element 513. When the screening cylinder 2 moves upward from the bottom, the mounting plate 41 fits against the bottom of the locking block 512 under the elastic force of the first elastic element 531, effectively restricting the upward movement of the mounting plate 41 and completing the potential energy accumulation of the first elastic element 531. When the control component 52 releases the lock, the first elastic element 531 releases its elastic potential energy, pushing the mounting plate 41 and the striking rod 411 upward to perform the striking action.

[0048] Reference Figure 4 , Figure 7 and Figure 8 The control component 52 includes an extension block 521 and a crossbar 522. The extension block 521 is connected to the locking block 512, and an inclined guide groove 5211 is provided on the extension block 521. The crossbar 522 is movably mounted on the second support 511. The crossbar 522 is provided with a push rod 5221 and a fourth elastic element 5222. The push rod 5221 abuts against the groove wall of the inclined guide groove 5211, and the two ends of the fourth elastic element 5222 are respectively connected to the crossbar 522 and the second support 511. The frame 1 is provided with a second transmission component 54. The two ends of the second transmission component 54 are respectively connected to the crossbar 522 and the connecting seat 422. When the crossbar 522 moves down, the push rod 5221 presses against the groove wall of the inclined guide groove 5211 to push the locking block 512 to retract.

[0049] This invention utilizes an extension block 521, a crossbar 522, a push rod 5221, a fourth elastic element 5222, and a second transmission assembly 54 to trigger the locking block 512 to retract and release the restriction on the movement of the mounting plate 41. When the screening cylinder 2 rotates to its top, the connecting seat 422 moves with the first transmission assembly 42 and drives the crossbar 522 downward through the second transmission assembly 54. As the crossbar 522 moves downward, it compresses the fourth elastic element 5222, simultaneously driving the push rod 5221 downward. The downward-moving push rod 5221 presses against the wall of the inclined guide groove 5211. With the guidance of the inclined guide groove 5211, the extension block 521 drives the locking block 512 to slide and retract along the second support 511, thereby releasing the locking block 512 from the mounting plate 41. The movement restriction of 1 causes the mounting plate 41 to drive the striking rod 411 to move upward and strike the rib 21, completing the striking anti-blocking action; when the screening cylinder 2 continues to rotate away from the top, the connecting seat 422 releases the downward pressure on the crossbar 522 through the second transmission component 54, the fourth elastic element 5222 resets and pushes the crossbar 522 upward, the push rod 5221 resets with the crossbar 522 and releases the pressure on the inclined guide groove 5211, and the locking block 512 resets under the action of the third elastic element 513 and regains its locking ability.

[0050] Reference Figure 5 , Figure 6 , Figure 9 and Figure 10 The second transmission assembly 54 includes a fixed plate 541, a second connecting rod 542, and a slide block 543. The fixed plate 541 is fixedly mounted on the frame 1. The second connecting rod 542 is provided with a first hinge shaft and a second hinge shaft. The first hinge shaft is hinged to the fixed plate 541. The slide block 543 is provided with a first linear guide groove. The second hinge shaft is slidably engaged with the first linear guide groove. The second connecting rod 542 is also provided with a second linear guide groove. A second shaft 5223 that is slidably engaged with the second linear guide groove is connected to the crossbar 522.

[0051] This invention achieves the function of driving the crossbar 522 downward by moving the connecting seat 422 through the fixed plate 541, the second connecting rod 542, the slide 543, and the second transmission assembly 54. When the screening cylinder 2 rotates to the top, the connecting seat 422 moves upward synchronously under the transmission action of the first transmission assembly 42. After the connecting seat 422 contacts the slide 543, it pushes the slide 543 to move. The slide 543 pushes the second hinge shaft through the groove wall of the first linear guide groove. The second hinge shaft drives the second connecting rod 542 to swing around the first hinge shaft. During the swing, the groove wall of the second linear guide groove on the second connecting rod 542 pushes the second shaft 5223 to move. Then, the second shaft 5223 drives the crossbar 522 to move downward. The crossbar 522 drives the push rod 5221 to press the inclined guide groove 5211 to unlock the locking block 512, allowing the mounting plate 41 to release potential energy to complete the knocking.

[0052] Reference Figure 1 and Figure 2 A pellet feed preparation device for livestock feeding includes an automated pellet feed screening device for livestock feeding; the frame 1 is provided with a feed hopper 11, a discharge pipe 12 and a discharge hopper 13; in the working state, the feed fed from the feed hopper 11 enters the screening cylinder 2, the feed that passes through the screen holes of the screening cylinder 2 falls into the discharge hopper 13 under the action of gravity, and the feed that does not pass through the screen holes is discharged from the discharge pipe 12.

[0053] In operation, the pelleted feed to be screened is fed into the feed hopper 11. The feed enters the screening cylinder 2 precisely along the feed hopper 11. The drive device 3 is started to drive the screening cylinder 2 to rotate eccentrically. At the same time, the striking device 4, together with the auxiliary control mechanism 5 and the transmission component, completes synchronous striking to prevent blockage. The qualified particle size feed that passes through the screen holes of the screening cylinder 2 falls into the discharge hopper 13 under the action of gravity, which is convenient for collection and subsequent feeding or further processing. The larger particle size feed that does not pass through the screen holes is discharged from the discharge pipe 12 and can be recycled and re-crushed for processing, realizing the recycling of feed.

[0054] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. An automated screening device for pelleted feed in livestock feeding, characterized in that, It includes a frame (1), a screening cylinder (2), a drive unit (3), and a striking device (4); The drive device (3) includes a main shaft (31), a cam (32) and a rotary drive assembly (33). The main shaft (31) is rotatably mounted on the frame (1). The cam (32) is sleeved on the main shaft (31). The rotary drive assembly (33) is used to drive the main shaft (31) to rotate. The screening cylinder (2) is connected to the cam (32), and the axis of the screening cylinder (2) is offset from the axis of the main shaft (31). The sieve cylinder (2) has sieve holes; The striking device (4) is used to strike the screening cylinder (2); The striking device (4) includes a mounting plate (41) and a first transmission assembly (42). The mounting plate (41) is provided with a striking rod (411) for striking the screening cylinder (2), and the screening cylinder (2) is provided with ribs (21) for cooperating with the striking rod (411). The two ends of the first transmission assembly (42) are respectively connected to the mounting plate (41) and the screening cylinder (2); the frame (1) is provided with an auxiliary control mechanism (5), which includes a locking assembly (51), a control assembly (52) and a base plate (53). The base plate (53) is provided with a first elastic element (531) that is connected to the mounting plate (41). In the working state, when the screening cylinder (2) moves to the bottom, the locking component (51) restricts the mounting plate (41) from moving upward. When the screening cylinder (2) rotates to the top, the control component (52) releases the locking component (51) from restricting the movement of the mounting plate (41). The first transmission component (42) includes a first support (421), a connecting seat (422), a vertical rod (423), a first shaft (424), and a mounting frame (425). The first support (421) is connected to the mounting plate (41), the connecting seat (422) is connected to the first support (421) in a transmission manner, and the upright (423) is connected to the connecting seat (422); The first shaft (424) is connected to the upright (423), the mounting frame (425) is rotatably connected to the screening cylinder (2), and the mounting frame (425) is provided with a linear guide rail that slides with the first shaft (424).

2. The automated screening device for pelleted feed in livestock feeding according to claim 1, characterized in that, The mounting frame (425) is provided with at least two positioning posts (43). The frame (1) has two telescopic rods (44) hinged inside, and the line connecting the hinge points of the two telescopic rods (44) extends in the vertical direction. The movable rods of the two telescopic rods (44) are respectively connected to the two positioning posts (43); The telescopic rod (44) is provided with a first connecting rod (45), and the two ends of the first connecting rod (45) are respectively hinged to the two telescopic rods (44).

3. The automated screening device for pelleted feed in livestock feeding according to claim 1, characterized in that, The connecting seat (422) is provided with a second elastic element (426), and the two ends of the second elastic element (426) are respectively connected to the first support (421) and the connecting seat (422).

4. The automated screening device for pelleted feed in livestock feeding according to claim 1, characterized in that, The locking assembly (51) includes a second support (511), a locking block (512), and a third elastic member (513). The second support (511) is mounted on the frame (1); The locking block (512) is slidably mounted on the second support (511), and the locking block (512) has an arc surface on the side near the screening cylinder (2); The two ends of the third elastic element (513) are respectively connected to the locking block (512) and the second support (511).

5. An automated screening device for pelleted feed in livestock feeding according to claim 4, characterized in that, The control component (52) includes an extension block (521) and a crossbar (522); The extension block (521) is connected to the locking block (512), and the extension block (521) is provided with an oblique guide groove (5211). The crossbar (522) is vertically and flexibly mounted on the second support (511). The crossbar (522) is provided with a push rod (5221) and a fourth elastic element (5222). The push rod (5221) abuts against the groove wall of the inclined guide groove (5211). The two ends of the fourth elastic element (5222) are respectively connected to the crossbar (522) and the second support (511). The frame (1) is provided with a second transmission assembly (54). The two ends of the second transmission assembly (54) are respectively connected to the crossbar (522) and the connecting seat (422). When the crossbar (522) moves down, the push rod (5221) squeezes the groove wall of the inclined guide groove (5211) to push the locking block (512) to retract.

6. An automated screening device for pelleted feed in livestock feeding according to claim 5, characterized in that, The second transmission assembly (54) includes a fixed plate (541), a second connecting rod (542), and a slide (543). The fixing plate (541) is fixedly installed on the frame (1); The second connecting rod (542) is provided with a first hinge shaft and a second hinge shaft. The first hinge shaft is hinged to the fixed plate (541). The slide block (543) is provided with a first linear guide groove. The second hinge shaft is slidably engaged with the first linear guide groove. The second connecting rod (542) is provided with a second linear guide groove. The crossbar (522) is connected to a second shaft (5223) that slides with the second linear guide groove.

7. A pellet feed preparation device for livestock feeding, characterized in that, Includes an automated pellet feed screening device for livestock feeding as described in any one of claims 1 to 6; The frame (1) is provided with a feed hopper (11), a discharge pipe (12) and a discharge hopper (13). In operation, feed fed from the feed hopper (11) enters the screening cylinder (2). Feed that passes through the sieve holes of the screening cylinder (2) falls into the feed hopper (13) under the action of gravity, while feed that does not pass through the sieve holes is discharged from the discharge pipe (12).

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