A feed screening device for calf breeding

Abstract

The application discloses a kind of feed screening devices for calf breeding, it is related to feed screening field, including box, the screen assembly and dust removal assembly are arranged in the box The screen assembly includes the screen plate being arranged in the box, and the transmission shaft is rotationally arranged in the bottom of screen plate in the box, The dust removal assembly includes the collection cylinder being arranged in the box, The stirring rod is arranged in the collection cylinder, one end of the stirring rod penetrates the box and is connected with external pipeline, and a plurality of dust removal holes are formed in the stirring rod. The present application efficiently traps the caked material and large-diameter hard impurities in the feed by the screen hole structure of the screen plate, completes the pre-coarse screening of calf feed, synchronously drives the stirring rod and stirring blade in the collection cylinder to rotate by the bevel gear meshing transmission, cooperates with the negative pressure air extraction connected by external pipeline, forms directional negative pressure airflow through dust removal hole, and uniformly extracts and discharges the dust in the cylinder, realizes the deep dedusting treatment of finished feed.

Description

Technical Field

[0001] This invention relates to the field of feed screening, specifically to a feed screening device for calf farming. Background Technology

[0002] Calf farming refers to the feeding and management of beef or dairy cattle from birth to 180 days of age during the weaning and rearing period. It is divided into the lactation period from 0 to 60 days of age and the weaning and rearing period from 60 to 180 days of age. Because the rumen of calves is not fully developed and their digestive capacity is weak, they cannot eat general feed for adult cattle and sheep and need to consume special refined diets. Therefore, it is necessary to screen their feed.

[0003] Existing feed screening mechanisms mostly adopt a single-sided vibrating screen structure. The feed is directly fed onto the screen surface and the particle size is classified by the vibration of the screen body. This type of screening method only separates materials through the screen aperture and cannot effectively remove ultrafine dust trapped between qualified particles. As a result, the finished feed after screening still contains a large amount of fine powder. Calves are in the early stage of growth and development, and their gastrointestinal mucosa and respiratory system are not yet fully developed. Dust mixed in during feeding will increase the risk of damage to the digestive tract mucosa, induce indigestion and diarrhea, and if inhaled into the respiratory tract, it will easily cause respiratory diseases such as cough, wheezing and bronchitis. At the same time, ultrafine powder cannot provide effective physical stimulation to the rumen, which is not conducive to the establishment of rumen microbiota and organ development, thus leading to calf growth retardation and ultimately reducing calf survival rate and overall growth quality.

[0004] In summary, existing vibrating screens rely solely on aperture size to screen calf feed, which cannot remove entrained ultrafine dust. This dust can damage the calf's digestive and respiratory systems, hinder rumen development, and reduce rearing quality and survival rate. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a feed screening device for calf farming, so as to solve the technical problem that the existing vibrating screens rely solely on the aperture size to screen calf feed, which cannot remove the entrained ultrafine dust. The dust will damage the calf's gastrointestinal tract and respiratory tract, hinder rumen development, and reduce the quality of rearing and survival rate.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a feed screening device for calf farming, comprising a box, wherein a screening component and a dust removal component are provided inside the box; The screening assembly includes a screening plate (2) disposed in the box (1), and an elastic component is provided at the bottom of the screening plate (2). One end of the elastic component is connected to the inner wall of the box (1) to facilitate the screening plate (2) to shake. A drive shaft is rotatably disposed at the bottom of the screening plate inside the box, wherein the screening plate can be shaken at high frequency through the drive shaft. The dust removal assembly includes a collection cylinder disposed inside the housing, and a stirring rod disposed inside the collection cylinder. The stirring rod can be rotated by a drive shaft. One end of the stirring rod passes through the housing and is connected to an external pipe. At the same time, a number of dust removal holes are opened on the stirring rod.

[0007] By adopting the above technical solution, the rotational motion is converted into high-frequency reciprocating vibration of the screening plate through the contact transmission between the cam and the top block. The sieve hole structure of the screening plate efficiently intercepts agglomerated materials and large-diameter hard impurities in the feed, completing the pre-coarse screening of calf feed. The stirring rod and stirring blade inside the collection cylinder are synchronously driven by the meshing transmission of bevel gears to continuously and flexibly disturb the material layer inside the cylinder, so that the ultrafine dust attached to the particle surface and trapped between the particles can be fully dispersed and escaped. With the help of the negative pressure air extraction system connected by the external pipeline, the dust in the cylinder is uniformly extracted and discharged through the dust removal hole, realizing the deep dust removal treatment of the finished feed.

[0008] The present invention is further configured such that a stepper motor is provided on one side of the housing, and the output end of the stepper motor is connected to the transmission shaft, wherein the stepper motor can be used to drive its transmission shaft to rotate at a variable frequency.

[0009] Preferably, the stepper motor serves as the sole power source for the entire machine, synchronously outputting rotational power through the drive shaft. On one hand, it drives the cam mounted on the shaft to rotate continuously, which, in conjunction with the top block, converts the rotational motion into the reciprocating vibration of the screening plate, completing the coarse screening and interception of large particles of feed clumps. On the other hand, through the meshing of the spur bevel gear and the side bevel gear on the drive shaft, the lateral rotational power is reversed and transmitted to the vertical stirring rod, driving the stirring blades to continuously agitate the material in the collection cylinder, so that the dust adhering to the surface of the particles is fully disintegrated.

[0010] The present invention is further configured such that a spur bevel gear is provided on the outer wall of the transmission shaft, and a side bevel gear meshes with one side of the spur bevel gear, wherein the bottom of the side bevel gear is connected to the top of the stirring rod.

[0011] Preferably, when the drive shaft rotates via a stepper motor, the spur bevel gear on its outer wall will drive the side bevel gear to mesh and rotate, which in turn drives the stirring rod inside the collection cylinder to rotate.

[0012] The present invention is further configured such that the outer wall of the stirring rod is provided with an array of stirring blades, wherein the stirring blades are respectively located at the top of the dust removal hole.

[0013] Preferably, the stirring blades are positioned above the dust removal holes. The rotation of the blades can create continuous turbulence in the dust removal hole area. The dust stirred up is located within the negative pressure exhaust path. The external pipe can quickly remove the suspended dust through the dust removal holes, preventing the dust from settling and adhering to the feed particles, thus achieving synchronous agitation and dust collection.

[0014] The present invention is further configured such that the stirring rod has a flow channel inside, the flow channel is connected to the dust removal hole, and the flow channel itself is also connected to an external pipe.

[0015] Preferably, when air is drawn from the external pipe, a negative pressure is generated in the flow channel. At this time, the dust that is dislodged by the stirring mechanism in the collection cylinder will enter the flow channel through the dust removal hole, and then be discharged outward through the external pipe.

[0016] The present invention is further configured such that cams are symmetrically arranged on the outer wall of the transmission shaft, and top blocks that cooperate with the cams are arranged on both sides of the screening plate.

[0017] Preferably, during the rotation of the drive shaft by the stepper motor, the cam will drive the top blocks on both sides of the screening plate to lift up. During this process, the top blocks will be excited by the cam at a high frequency, and the screen hole structure of the screening plate will efficiently intercept the lumpy materials and large-particle hard impurities in the feed.

[0018] The present invention is further configured such that a baffle is provided on the top of the collection cylinder, wherein the baffle is sealed to the inner wall of the box.

[0019] Preferably, a baffle is installed around the top opening of the collection cylinder, with its outer edge forming a sealed fit with the inner wall of the box. This separates the upper screening area from the dust removal chamber of the lower collection cylinder inside the box. Qualified feed that has passed through the screening plate flows in a directional manner along the inner wall of the baffle and all flows into the inside of the collection cylinder. The seal between the outer edge of the baffle and the inner wall of the box confines the negative pressure within the limited area of ​​the collection cylinder opening, significantly reducing the upward dissipation of negative pressure through the screen holes of the screening plate. This concentrates the suction force on the material discharge channel and, in conjunction with the directional flow of screened material, prevents particle splashing and dust from spreading to the sides of the box, avoiding dust backflow and contamination of the raw materials on the screen surface, effectively improving the utilization rate of negative pressure and the dust removal effect.

[0020] The present invention is further configured such that an array of feet are symmetrically arranged at the bottom of the box, wherein the feet themselves are adjustable.

[0021] Preferably, the feet prevent dirt and impurities from the ground from corroding the feed inside, while the adjustable design allows for easy adjustment of the overall height of the box according to different situations, improving the overall practicality of the device.

[0022] The invention is further configured such that a sliding groove is provided inside the box at the top block, wherein an elastic component is installed in the sliding groove, and the elastic component is used to drive the top block to slide back and forth.

[0023] Preferably, the chute facilitates the sliding of the screening plate on the inner wall of the box when the cam lifts the top block, and the elastic component further improves the overall vibration screening effect.

[0024] In summary, the present invention has the following main beneficial effects: 1. This invention uses a stepper motor as a unified drive source and utilizes the contact transmission between the cam and the top block to convert the rotational motion into high-frequency reciprocating vibration of the screening plate. With the help of the screen hole structure of the screening plate, it efficiently intercepts agglomerated materials and large-particle hard impurities in the feed, completing the pre-coarse screening of calf feed. The qualified particles under the screen fall directionally into the bottom collection cylinder under the guidance and constraint of the enclosure, which not only avoids material splashing and scattering, but also prevents large-particle impurities from entering the subsequent process. 2. This invention features a stirring rod installed inside a collection cylinder. Through bevel gear meshing, the stirring rod and blades within the cylinder are synchronously driven to rotate, continuously and flexibly agitating the material layer inside. This allows the ultrafine dust adhering to the particle surface and trapped between particles to fully disperse and escape. Combined with a negative pressure extraction system connected to an external pipeline, a directional negative pressure airflow is formed through the dust removal holes to uniformly extract and discharge the dust from the cylinder. This achieves deep dust removal treatment of the finished feed, effectively reducing feed dust content and improving calf survival rate and overall growth quality. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the drive component structure of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of A in the middle; Figure 5 For the present invention Figure 3 Enlarged view of B in the middle; Figure 6 This is an exploded view of the present invention; Figure 7 This is a schematic diagram of the screening component structure of the present invention; Figure 8 This is a schematic diagram of the collection cylinder structure of the present invention; Figure 9 This is a cross-sectional view of the collection tube of the present invention; Figure 10 For the present invention Figure 9 A magnified view of C.

[0026] Explanation of reference numerals in the attached figures: 1. Box body; 2. Screening plate; 3. Base; 4. External pipe; 5. Stepper motor; 6. Stirring blade; 7. Stirring rod; 8. Collection cylinder; 9. Flow channel; 10. Drive shaft; 11. Side bevel gear; 12. Spur bevel gear; 13. Cam; 14. Enclosure; 15. Top block; 16. Dust removal hole. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of the present invention will now be described.

[0029] Example 1: Please refer to Figures 1-10 The feed screening device for calf farming shown includes a box 1, a screening plate 2, a stirring rod 7, a screening component and a dust removal component. The screening plate 2 is installed inside the box 1. The bottom of the screening plate 2 is connected to the box 1 through an elastic component. A stepper motor 5 is installed on one side of the box 1. The output end of the stepper motor 5 is connected to a drive shaft 10. Cams 13 are symmetrically arranged on the outer wall of the drive shaft 10. Top blocks 15 that cooperate with the cams 13 are arranged on both sides of the screening plate 2. When the drive shaft 10 rotates through the stepper motor 5, it will drive the cams 13 to lift the top blocks 15 on both sides of the screening plate 2. During this process, the top blocks 15 will be excited by high frequency reciprocating under the action of the cams 13. The sieve hole structure of the screening plate 2 can efficiently intercept agglomerated materials and large-particle hard impurities in the feed. Meanwhile, a collection cylinder 8 is provided at the bottom of the screening plate 2 inside the box 1. The feed particles that have passed through the pre-coarse screening will fall into the collection cylinder 8 at the bottom with dust. A spur bevel gear 12 is provided on the outer wall of the drive shaft 10. A side bevel gear 11 meshes with the spur bevel gear 12 on one side. The bottom of the side bevel gear 11 is connected to the top of the stirring rod 7. When the drive shaft 10 is rotated by the stepper motor 5, the spur bevel gear 12 on its outer wall will drive the side bevel gear 11 to mesh and rotate. In this process, the stirring rod 7 inside the collection cylinder 8 can be rotated, which facilitates continuous and flexible disturbance of the material layer inside the cylinder, so that the ultrafine dust attached to the surface of the particles and trapped in the gaps between the particles can be fully dispersed and escaped. Furthermore, one end of the stirring rod 7 passes through the housing 1 and is connected to an external pipe 4. At the same time, an array of dust removal holes 16 are opened on the stirring rod 7. A flow channel 9 is opened inside the stirring rod 7, which is connected to the dust removal holes 16. The flow channel 9 itself is also connected to the external pipe 4. One end of the stirring rod 7 passes through the housing 1 and is connected to the external pipe 4. The flow channel 9 opened inside the rod is connected to the external pipe 4 and the array of dust removal holes 16 distributed on the rod. After the external negative pressure system is connected, a dynamic negative pressure suction passage is formed that rotates synchronously with the stirring rod 7. During the stirring operation, the negative pressure can reach the inside of the material layer through the dust removal holes 16, and immediately remove the ultrafine dust that is separated from the particle surface after being disturbed by the stirring blade 6. There is no need to add an external air duct inside the cylinder. This simplifies the internal structure, avoids the accumulation of material in the pipeline and obstruction of the material, and effectively prevents the secondary settling of dust and adhesion to the feed particles. It greatly improves the deep dust removal effect of calf feed and ensures the stability of the finished feed quality.

[0030] For details regarding the above embodiments, please refer to [link / reference]. Figure 2-3 A stepper motor 5 is installed on one side of the housing 1. The output end of the stepper motor 5 is connected to the transmission shaft 10. The stepper motor 5 can drive its transmission shaft 10 to rotate at a variable frequency. As the single power source of the whole machine, the stepper motor 5 outputs rotational power to the outside through the transmission shaft 10. On the one hand, it drives the cam 13 installed on the shaft to rotate continuously. With the help of the top block 15, the rotational motion is converted into the reciprocating vibration of the screening plate 2, which completes the coarse screening and interception of large particles of feed clumps. On the other hand, through the meshing of the positive bevel gear 12 and the side bevel gear 11 on the transmission shaft 10, the horizontal rotational power is reversed and transmitted to the vertical stirring rod 7, which drives the stirring blade 6 to continuously agitate the material in the collection cylinder 8, so that the dust on the surface of the particles is fully separated.

[0031] For details regarding the above embodiments, please refer to [link / reference]. Figure 9 The outer wall of the stirring rod 7 is provided with an array of stirring blades 6, which are located at the top of the corresponding dust removal holes 16. The multiple sets of stirring blades 6 are arranged vertically along the stirring rod 7, which can turn over the calf feed pellets stacked in the collection cylinder 8 in layers, break up the gaps between the pellets, and allow the ultrafine dust adhering to the surface of the pellets and embedded in the gaps to be fully peeled off and dispersed, avoiding the compaction and agglomeration of powder to cover the dust, and improving the dust removal efficiency. Meanwhile, the stirring blades 6 are positioned above the dust removal holes 16. The rotation of the blades can create continuous turbulence in the dust removal hole area. The dust stirred up is located within the negative pressure exhaust path. The external pipe 4 can quickly remove suspended dust through the dust removal holes 16, preventing dust from settling and adhering to feed particles. This achieves simultaneous agitation and dust collection. Furthermore, the multi-layered, staggered stirring blades 6 gently turn the feed without violent impact. For brittle calf feed pellets, this reduces the generation of secondary dust from pellet breakage, simultaneously ensuring feed integrity and dust removal effectiveness.

[0032] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 and Figure 6 The housing 1 contains a sliding groove located at the top block 15, within which an elastic component is installed. This elastic component drives the top block 15 to slide back and forth. The sliding groove guides and limits the top block 15. In conjunction with the elastic component and cam 13, the cam 13 compresses the elastic component when it rises and drives the top block 15 to reset during the return stroke. This ensures that the top block 15 slides stably along the sliding groove, providing a continuous and uniform reciprocating excitation force to the screening plate 2. At the same time, the elastic component can buffer the rigid collision between the cam 13 and the top block 15, reducing operational impact and noise, preventing the top block from jamming, stabilizing the screening excitation amplitude, improving screening efficiency and equipment reliability, and extending the service life of components.

[0033] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 The contact surfaces of the cam 13 and the top block 15 are smooth. This smooth contact surface significantly reduces the sliding friction resistance during their relative movement, ensuring a smooth and unobstructed lifting and return transmission process for the cam 13. This allows the screening plate 2 to achieve a stable and uniform reciprocating vibration amplitude and frequency, while also reducing frictional wear and operating noise on the contact surfaces. It also prevents debris generated by friction from mixing into the feed and causing contamination, effectively extending the service life of components and improving the long-term reliability of the equipment.

[0034] Example 2: Please refer to Figure 6 The feed screening device for calf farming shown has an overall structure similar to that of Embodiment 1. A baffle 14 is installed at the top of the collection cylinder 8, which is sealed to the inner wall of the housing 1. The baffle 14 surrounds the opening at the top of the collection cylinder 8, and its outer edge forms a sealed fit with the inner wall of the housing 1. This separates the upper screening area from the dust removal chamber of the lower collection cylinder within the housing 1. Qualified feed screened by the screening plate 2 flows directionally along the inner wall of the baffle and all flows into the collection cylinder 8. The outer edge of the baffle 14 seals with the inner wall of the housing 1, confining the negative pressure within the limited area of ​​the opening of the collection cylinder 8. This significantly reduces the upward dispersion of negative pressure through the screen holes of the screening plate 2, concentrating the suction force on the material discharge channel. Simultaneously, the directional flow of screened material prevents particle splashing and dust from spreading to the sides of the housing 1, avoiding dust backflow and contamination of the screen surface material, effectively improving the utilization rate of negative pressure and dust removal effect.

[0035] In practical operation, the present invention is used by uniformly placing the feed to be screened onto the top of the screening plate 2. Then, the operator starts the stepper motor 5 on one side of the box 1. The stepper motor 5 drives the cam 13 at the output end to rotate. The rotational motion is converted into high-frequency reciprocating vibration of the screening plate 2 by the contact transmission between the cam 13 and the top block 15. The sieve hole structure of the screening plate 2 efficiently intercepts the lumpy material and large-particle hard impurities in the feed, completing the pre-coarse screening of calf feed. The screened feed will fall into the collection cylinder 8 at the bottom. The setting of the enclosure 14 not only prevents the material from splashing and scattering, but also prevents large particles of impurities from entering the subsequent process. Meanwhile, a side bevel gear 11 is installed on the drive shaft 10, and a stirring rod 7 is installed inside the collection cylinder 8. An array of stirring blades 6 are installed on the outer wall of the stirring rod 7. During the meshing and rotation of the side bevel gear 11 and the positive bevel gear 12, the stirring rod 7 inside the collection cylinder 8 will rotate. Through the cooperation of the stirring rod 7 and the stirring blades 6, the material layer inside the mixing drum is continuously and flexibly disturbed, so that the ultrafine dust attached to the surface of the particles and trapped in the gaps between the particles is fully dispersed and escaped. In addition, an array of dust removal holes 16 are opened on the stirring rod 7, which are connected to the air extraction component through the external pipe 4. The dust removal holes 16 form a directional negative pressure airflow to uniformly extract and discharge the dust in the collection cylinder 8, realizing the deep dust removal treatment of the finished feed, effectively reducing the dust content of the feed, and improving the survival rate of calves and the overall growth quality.

[0036] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A feed screening device for calf farming, comprising a housing (1), characterized in that: The housing (1) is equipped with a screening component and a dust removal component; The screening assembly includes a screening plate (2) disposed inside the box (1). An elastic component is provided at the bottom of the screening plate (2). One end of the elastic component is connected to the inner wall of the box (1) to facilitate the vibration of the screening plate (2). A drive shaft (10) is rotatably disposed at the bottom of the screening plate (2) inside the box (1), wherein the screening plate (2) can be vibrated at high frequency through the drive shaft (10). The dust removal assembly includes a collection cylinder (8) installed inside the housing (1), and a stirring rod (7) is installed inside the collection cylinder (8). The stirring rod (7) can be rotated by a drive shaft (10). One end of the stirring rod (7) passes through the housing (1) and is connected to an external pipe (4). At the same time, an array of dust removal holes (16) are opened on the stirring rod (7).

2. The feed screening device for calf farming according to claim 1, characterized in that: A stepper motor (5) is provided on one side of the housing (1). The output end of the stepper motor (5) is connected to the transmission shaft (10). The stepper motor (5) can be used to drive its transmission shaft (10) to rotate by frequency conversion.

3. The feed screening device for calf farming according to claim 1, characterized in that: The outer wall of the drive shaft (10) is provided with a spur bevel gear (12), and a side bevel gear (11) meshes with one side of the spur bevel gear (12), wherein the bottom of the side bevel gear (11) is connected to the top of the stirring rod (7).

4. The feed screening device for calf farming according to claim 1, characterized in that: The outer wall of the stirring rod (7) is provided with an array of stirring blades (6), wherein the stirring blades (6) are located at the top of the dust removal hole (16).

5. The feed screening device for calf farming according to claim 1, characterized in that: The stirring rod (7) has a flow channel (9) inside, which is connected to the dust removal hole (16) and is also connected to the external pipe (4).

6. The feed screening device for calf farming according to claim 1, characterized in that: The outer wall of the drive shaft (10) is symmetrically provided with cams (13), and top blocks (15) that cooperate with the cams (13) are provided on both sides of the screening plate (2).

7. The feed screening device for calf farming according to claim 1, characterized in that: The top of the collection cylinder (8) is provided with a barrier (14), wherein the barrier (14) is sealed to the inner wall of the box (1).

8. The feed screening device for calf farming according to claim 1, characterized in that: The bottom of the box (1) is symmetrically provided with an array of feet (3), wherein the feet (3) are adjustable.

9. A feed screening device for calf rearing according to claim 1, characterized in that: The box (1) is provided with a sliding groove at the top block (15), and an elastic component is installed in the sliding groove. The elastic component is used to drive the top block (15) to slide back and forth.

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