Livestock feed preparation device

Abstract

The present application relates to the technical fields of animal feed preparation, and discloses a livestock feed preparation device, in order to solve the problem of clogging when the filter screen filters for a long time, the sieve cylinder is driven to rotate by the driving shaft, in this process, the relative movement between the driving wheel and the inside of the shell is utilized to force the driving wheel to move in the opposite direction between the driving sieve roller and the driven sieve roller by the transmission gear set. Since the filter part is located between the distance between the driving sieve roller and the driven sieve roller, the feed meeting the distance can be screened out, and the large stone or the granular particles are retained in the inside of the sieve cylinder. By the continuous rotation of the driving sieve roller and the driven sieve roller, the filter material clogged between the two is driven to have a tendency to move away from the filter part, thereby preventing the filter part from accumulating, and finally realizing the effect that the filter part is not easy to be clogged.

Description

Technical Field

[0001] The present invention relates to the technical field related to animal feed preparation, and in particular to a livestock feed preparation device. Background Art

[0002] As the global economy continues to develop, population growth and escalating consumer spending have become significant trends. This trend has directly driven a continued surge in demand for animal-based foods, such as meat and dairy products. To meet this growing market demand, the livestock industry has been forced to accelerate its development towards scale and intensification. As a core input in the entire livestock industry chain, the importance of scientifically prepared feed is undeniable. It not only directly impacts animal growth efficiency and breeding costs, but is also closely linked to the quality and safety of the final product.

[0003] However, the current livestock feed preparation process presents a significant problem. Stones inevitably become entrained in the feed during harvesting, transportation, and other processes. If these stones are not promptly screened out, the stone-laden feed can burden the animal's digestive system. More seriously, the hard stones can scratch the animal's digestive tract lining, leading to a range of health issues, such as indigestion and infections, which in turn impact animal growth and profitability.

[0004] To address the issue of stones in feed, a search revealed that patent publication number CN212464847U provides a livestock feed preparation device. The device operates as follows: a servo motor drives the rotating shaft to rotate, which in turn transmits power to a cam, causing the cam to rotate. As the cam rotates, it pushes the push rod upward, which in turn drives the screening plate. The shaking of the screening plate is used to screen the feed, achieving a better filtration effect. This device effectively solves the problem of poor filtration performance in existing livestock feed preparation devices, preventing the presence of stones in livestock feed, which in turn affects the quality of the prepared feed and harms the health of livestock.

[0005] Based on the above-mentioned existing technology, it can be seen that the main method for screening stone particles in feed is currently screened with mesh. However, our company has discovered through long-term practical application that this screening method has many drawbacks. Because the mesh aperture is fixed, fine particles and impurities in the feed gradually accumulate on the filter surface during long-term filtering operations, causing the filter to become clogged. Once the filter is clogged, its actual filtration efficiency is seriously affected, making the feed screening process impossible, and increasing production time and costs.

[0006] Furthermore, the filtered material after screening is quite complex. It contains not only stones but also some clumped feed. This results in the filtered material being not simply stones, but a mixture of feed and stones. Simply dumping this mixture would undoubtedly result in a large amount of feed waste, increasing production costs. Furthermore, processing this mixture to separate the clumped feed and stones within the same volume would require additional equipment and process steps, further increasing production costs and reducing feed preparation efficiency, adversely impacting the company's production and operations. Summary of the Invention

[0007] The present invention provides a livestock feed preparation device, which has the advantage that the filter part is not easily clogged, and is used to solve the problem of clogging of the filter screen during long-term filtration proposed in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a livestock feed preparation device, characterized in that it includes: an outer shell, in which a screen drum is movably installed to provide a rotational force through a drive shaft; a screening component is movably installed on the side of the screen drum, and the screening component includes: an active screen roller and a driven screen roller, both of which are movably installed on the side of the screen drum, and the distance between the active screen roller and the driven screen roller is a filtering part; a transmission gear set for realizing the transmission of the active screen roller and the driven screen roller; a driving wheel, fixed to the shaft end of the active screen roller and rollingly connected to the inner side of the outer shell; when the driving shaft drives the screen drum to rotate, the driving wheel rotates along the inner side of the outer shell and makes the active screen roller and the driven screen roller rotate synchronously, and the active screen roller and the driven screen roller are synchronized and rotate in opposite directions through the transmission gear set, and the filtering part is not easily blocked by the rotation of the active screen roller and the driven screen roller.

[0009] Furthermore, the shape of the screen drum is a cylinder with an opening at one end. When the screen drum rotates, the agglomerated feed and stone particles inside the screen drum turn over and collide with each other, thereby breaking and dispersing the agglomerated feed.

[0010] Furthermore, there are multiple groups of screening components, and the multiple groups of screening components are arranged in a circular shape at equal angles on the side of the screen drum.

[0011] Furthermore, the transmission gear set is composed of two gears of the same structure, and the tooth profile of the gears is an isosceles trapezoid.

[0012] Furthermore, a material feeding stop frame is installed on the inner side of the screen drum on the side of the driven screen roller. The material feeding stop frame can move along the guide groove opened on the side of the screen drum, and a spring for pushing the material feeding stop frame is installed on the screen drum and in the guide groove.

[0013] Furthermore, there are multiple material conveying retaining frames, and any one of the material conveying retaining frames is fixed to the screen drum by bolts.

[0014] Furthermore, a limit gear located outside the screen drum is fixedly installed at the end of the driven screen roller shaft. The limit gear has a one-way limit tooth shape, and a limit push rod is fixedly installed at the end of the feed retaining frame to the outer side of the limit gear.

[0015] Furthermore, a guide seat pushed by a spring is movably installed on the outer side of the screen drum, and an active screen roller is movably installed on the side of the guide seat.

[0016] The present invention has the following beneficial effects:

[0017] The present invention provides a livestock feed preparation device that uses a drive shaft to drive a screen drum to rotate. During the screen drum's rotation, the relative motion between the drive wheel and the interior of the housing is utilized. As the drive wheel rotates with the screen drum and produces relative displacement with the interior of the housing, the drive wheel rotates and, through a transmission gear set, transmits and distributes power, achieving synchronization between the active and passive screen rollers, which move in opposite directions.

[0018] The filter section is located between the active and passive screen rollers. When feed enters the sieve drum, the rotation of the active and passive rollers allows feed that fits within the gap to pass smoothly through and be screened out. Larger stones or agglomerated particles, unable to pass through this gap, are trapped inside the sieve drum. Simultaneously, the active and passive rollers rotate continuously. This constant motion generates a force that drives any filter material stuck between them (i.e., large particles that haven't been screened out) away from the filtration area. This force effectively prevents the accumulation of filter material in the filtration area, preventing blockages and ultimately achieving a clog-resistant filter area. This effect not only ensures the continuity and stability of the screening process, but also significantly improves screening efficiency and reduces the time and labor costs required to stop the machine for cleaning due to blockages.

[0019] Furthermore, the device's cylindrical screen drum rotates, causing the stones and feed agglomerates trapped within it to tumble and collide with each other. This process results in frequent collisions between the stones and feed agglomerates. Because the stones are hard and the feed agglomerates are relatively loose, the powerful impact of the stones gradually breaks down the structure of the feed agglomerates. As these collisions continue, the feed agglomerates are eventually broken down into smaller particles. These smaller particles, due to their reduced size, fit within the required spacing between the active and passive screen rollers, allowing them to be discharged from the filter area. In this way, the device cleverly utilizes the principle of physical collision to effectively break up feed agglomerates. This effect not only improves feed quality, making the feed more uniform and finer, making it easier for animals to digest and absorb, but also avoids the waste caused by the direct discharge of agglomerated feed, thereby increasing feed utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] The present invention can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall internal three-dimensional structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the three-dimensional front structure of the screen drum of the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional rear structure of the screen drum of the present invention;

[0026] Figure 5 This is a schematic diagram of the top plan structure of the screen drum of the present invention;

[0027] Figure 6 for Figure 5 Schematic diagram of the structure at EE;

[0028] Figure 7 for Figure 5 Schematic diagram of the enlarged structure of the middle FFF and its part;

[0029] Figure 8 for Figure 5 Schematic diagram of the enlarged structure of the middle GG and its part;

[0030] Figure 9This is a schematic diagram of the installation positions of the active screen roller and the driven screen roller and the three-dimensional structure of their components in the present invention.

[0031] In the figure: 1. Housing; 101. Feed nozzle; 102. Drive shaft; 103. Discharge nozzle; 2. Screen drum; 3. Guide seat; 4. Transmission gear set; 5. Drive wheel; 6. Limit gear; 7. Limit push rod; 8. Feed stop frame; 9. Active screen roller; 10. Driven screen roller. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] For example 1, please refer to Figure 1-Figure 3 As can be seen, the housing 1 can be securely positioned using the top bracket. A screen drum 2 is movably mounted within the housing 1. A drive shaft 102, extending from the exterior of the housing 1, is fixedly connected to the axial end of the screen drum 2. Drive shaft 102 is connected to a motor via a belt, providing power for the rotation of the screen drum 2. The powertrain is not shown in the accompanying drawings.

[0034] The sieve drum 2 is cylindrical with an opening at one end, with a drive shaft 102 fixed to the shaft end away from the opening. Correspondingly, a feed nozzle 101 is fixedly mounted on the side of the housing 1, extending from the opening into the interior of the sieve drum 2. Feed is introduced into the sieve drum 2 through the feed nozzle 101. After being screened by the sieve drum 2, the feed falls out of the discharge nozzle 103 at the bottom of the housing 1, completing the screening of the livestock feed.

[0035] For specific feed screening work, combined with Figure 2 、 Figure 4 and Figure 9 It can be seen that multiple groups of screening components are movably installed on the side of the screen drum 2, and the multiple groups of screening components are arranged in a circular shape at equal angles on the side of the screen drum 2. More specifically, the screening components include an active screen roller 9 and a driven screen roller 10, both of which are movably installed on the side of the screen drum 2, and the distance between the active screen roller 9 and the driven screen roller 10 is set as a filtering part. When the screen drum 2 rotates, feed that meets the particle size can pass through the filtering part and eventually fall from the discharge nozzle 103. Agglomerated feed and stone particles that do not meet the particle size will remain inside the outer shell 1. Since the screen drum 2 is cylindrical in design, the agglomerated feed and stone particles inside the screen drum 2 will be constantly turned over and collided. The hardness of the stone particles is greater than that of the feed. Therefore, the collision between the two will cause the agglomerated feed to further disperse and eventually be discharged outward from the filtering part.

[0036] In order to prevent the filter from clogging, Figure 4-Figure 6 and Figure 9 It can be seen that the driving screen roller 9 and the driven screen roller 10 are equipped with a transmission gear set 4 at the shaft end. The transmission gear set 4 is composed of two gears of the same structure. It should be noted that the tooth profile of the gear is an isosceles trapezoid. The driving wheel 5 is installed on the shaft end of the driving screen roller 9. The outer side of the driving wheel 5 abuts against the inner side of the shell 1. When the driving shaft 102 drives the screen drum 2 to rotate, the screen drum 2 drives the driving wheel 5 to rotate along the inner side of the shell 1. The driving screen roller 9 and the driven screen roller 10 are synchronized and rotated in opposite directions through the transmission gear set 4. Figure 4 For example, when the drive shaft 102 rotates clockwise, the drive wheel 5 moves along the inside of the outer shell 1, which will cause the drive wheel 5 to drive the active screen roller 9 to rotate clockwise synchronously. At the same time, the driven screen roller 10 is driven by the transmission gear set 4 to rotate counterclockwise. Since the filtering direction of the screen drum 2 is from inside to outside, when the stone particles or agglomerated raw materials reach the filtering part, the active screen roller 9 and the driven screen roller 10 both have a tendency to move the filtered material away from the filtering direction, ensuring that the filtered material will not be blocked in the filtering part. As the screen drum 2 continues to rotate, the filtered material will fall downward due to gravity, and eventually the filtered material will never accumulate on the filtering part, ensuring that the filtering parts of the active screen roller 9 and the driven screen roller 10 can perform continuous non-stop filtering.

[0037] The second embodiment is a further improvement on the first embodiment. Figure 7 and Figure 9 It can be seen that the feed retaining frame 8 is installed on the inner side of the screen drum 2 and is located on the side of the driven screen roller 10. In the second embodiment, the first installation method of the feed retaining frame 8 is that the feed retaining frame 8 is fixed to the screen drum 2 with bolts, so that when the screen drum 2 rotates counterclockwise, the direction reference Figure 7 As shown, the feed and stone particles accumulated at the bottom of the inner cavity of the screen drum 2 are lifted by the blocking of the feed retaining frame 8. As the feed gradually rises, the feed retaining frame 8 continuously tilts downward, thereby pouring out the lifted stone particles and feed. As the stones are released after being lifted and collide with the feed below, the collision between the feed and the stones is further intensified, further strengthening the crushing strength of the feed.

[0038] On this basis, as the second mode of the feeding stop frame 8 in the second embodiment, Figure 7 It can be seen that there are multiple feeding stops 8, and the specific number is the same as the number of screening components. The difference from the above is that among the multiple feeding stops 8, any one is fastened to the screen drum 2 with bolts, and the other feeding stops 8 can move along the guide groove opened on the side of the screen drum 2, and when the feeding stops 8 move along the guide groove, they can move closer to or farther away from the driven screen roller 10 along the radial direction. Figure 8 It can be seen that a spring for pushing the feed baffle 8 is installed on the screen drum 2 and in the guide groove. Pushed by the spring, the feed baffle 8 is forced to always have a tendency to approach the driven screen roller 10 until the side of the feed baffle 8 is attached to the outer side of the driven screen roller 10.

[0039] from Figure 3 、 Figure 7-Figure 9 It can be seen that the driven screen roller 10 is fixedly mounted with a limit gear 6 located outside the screen drum 2. The limit gear 6 is a one-way limit gear shape. Figure 7 It can be seen that the tooth shape is fin-shaped, and the flat surface in front of the fin is provided with an inclined surface. Correspondingly, the end of the feed retaining frame 8 is fixedly installed with a limit rod 7 that abuts against the outer side of the limit gear 6. When the screen drum 2 rotates forward, Figure 7 As shown, the screen drum 2 rotates clockwise, the drive wheel 5 drives the active screen roller 9 counterclockwise, and the driven screen roller 10 and the stop gear 6 rotate clockwise. Subsequently, when the screen drum 2 drives the feed retaining frame 8 to rotate, the feed retaining frame 8 conveys the feed and stones from the bottom of the inner cavity of the screen drum 2 clockwise upward. During this conveying process, when the driven screen roller 10 drives the stop gear 6 to rotate, the curved surface of the external teeth on the stop gear 6 pulls the stop rod 7 radially away from the driven screen roller 10, simultaneously compressing the spring. A gap forms between the feed retaining frame 8 and the driven screen roller 10. As the driven screen roller 10 rotates clockwise and the weight of the feed and stones causes them to slide between the stop rod 7 and the driven screen roller 10. When the stop rod 7 passes the curved surface of the external teeth on the stop gear 6, the spring returns the feed retaining frame 8 to move again toward the driven screen roller 10, squeezing the feed or stones. Since the hardness of the stone particles is much greater than that of the feed, the stone particles will not be affected after being squeezed, while the squeezed agglomerated feed will be broken and dispersed. In combination with the process of the limiting top rod 7 constantly approaching / moving away from the driven screen roller 10, some of the squeezed feed and stone particles will move along the side of the screen drum 2 toward the next limiting top rod 7 and the driven screen roller 10, so that they can be squeezed and crushed again by the next limiting top rod 7 and the driven screen roller 10. Finally, when the feed retaining frame 8 fixed by bolts moves clockwise upward, the stone particles and feed that have been squeezed multiple times can be transported upward and eventually fall. This cycle is repeated to achieve continuous squeezing and crushing of the agglomerated feed in the screen drum 2.

[0040] On the basis of the above, combined with Figure 5-Figure 7It can be clearly seen that a guide seat 3 pushed by a spring is movably installed on the outer side of the screen drum 2, and the active screen roller 9 is movably installed on the side of the guide seat 3. The guide seat 3 is arc-shaped, and the guide seat 3 can move circumferentially along the screen drum 2. In order to achieve its motion limit, a limited rectangular groove is opened on the outer side of the guide seat 3, and the bolt passes through the rectangular groove and is fixed on the screen drum 2, and the motion limit of the guide seat 3 is achieved by using the rectangular groove. Under normal circumstances, the active screen roller 9 and the driven screen roller 10 are pushed relatively close by the spring. The advantage of this design is that after the agglomerated feed is crushed according to the above content, only stone particles are left in the inner cavity of the screen drum 2. At this time, when the stone particles need to be output outward, it is only necessary to use the drive shaft 102 to drive the screen drum 2 to rotate in the opposite direction, that is, Figure 7 In the embodiment of the present invention, when the screen drum 2 rotates counterclockwise, the driven screen roller 10 drives the limit gear 6 to rotate counterclockwise synchronously. At this time, the limit push rod 7 passes the outer tooth bevel of the limit gear 6 and hits the flat surface at its end, thereby restricting the limit gear 6 from continuing to rotate. At this time, the feed stop 8 is relatively far away from the driven screen roller 10. Afterwards, as the driven screen roller 10 cannot rotate, the transmission resistance of the transmission gear set 4 is forced to increase. Considering that the tooth profile of the transmission gear set 4 is an isosceles trapezoid, when the driving wheel 5 drives the active screen roller 9 to rotate continuously, the gears on the transmission gear set 4 use the bevel transmission to force the two to move relatively apart. The active screen roller 9 compresses the spring through the guide seat 3. At this time, the opening distance between the active screen roller 9 and the driven screen roller 10 is maximized. As the screen drum 2 continues to rotate, the stone particles in the inner cavity of the screen drum 2 will fall through the opening between the active screen roller 9 and the driven screen roller 10 and be discharged outward from the discharge nozzle 103, ultimately achieving the output of the stone particles.

Claims

1. A livestock feed preparation device, characterized in that: include: A housing (1) having a sieve drum (2) movably mounted therein and provided with a rotational force by a drive shaft (102); The side of the screen drum (2) is movably equipped with a screening component, which includes: The active screen roller (9) and the driven screen roller (10) are both movably mounted on the side of the screen drum (2), and the distance between the active screen roller (9) and the driven screen roller (10) is the filtering position; A transmission gear set (4) for realizing transmission between the active screen roller (9) and the driven screen roller (10); A driving wheel (5) is fixed to the shaft end of the active screen roller (9) and is in rolling connection with the inner side of the housing (1); When the driving shaft (102) drives the screen drum (2) to rotate, the driving wheel (5) rotates along the inner side of the housing (1) and causes the active screen roller (9) and the driven screen roller (10) to rotate synchronously. The active screen roller (9) and the driven screen roller (10) are caused to rotate synchronously and in opposite directions via the transmission gear set (4). The rotation of the active screen roller (9) and the driven screen roller (10) prevents the filter portion from being easily clogged. A material conveying retaining frame (8) is installed on the inner side of the screen drum (2) and is located on the side of the driven screen roller (10). The material conveying retaining frame (8) can move along a guide groove provided on the side of the screen drum (2), and a spring for pushing the material conveying retaining frame (8) is installed on the screen drum (2) and in the guide groove. A limit gear (6) located outside the screen drum (2) is fixedly mounted on the shaft end of the driven screen roller (10), the limit gear (6) being a one-way limit gear shape, and a limit push rod (7) abutting against the outer side of the limit gear (6) is fixedly mounted on the end of the feed retaining frame (8); A guide seat (3) pushed by a spring is movably mounted on the outer side of the screen drum (2), and an active screen roller (9) is movably mounted on the side of the guide seat (3); The screen drum (2) is in the shape of a cylinder with an opening at one end. When the screen drum (2) rotates, the agglomerated feed and stone particles inside the screen drum (2) flip and collide, thereby achieving the crushing and dispersion of the agglomerated feed.

2. The livestock feed preparation device according to claim 1, characterized in that: There are multiple groups of screening components, and the multiple groups of screening components are arranged in a circular shape at equal angles on the side of the screen drum (2).

3. The livestock feed preparation device according to claim 1, characterized in that: The transmission gear set (4) is composed of two gears of the same structure, and the tooth profile of the gears is an isosceles trapezoid.

4. The livestock feed preparation device according to claim 1, characterized in that: There are multiple material conveying retaining frames (8), and any one of the material conveying retaining frames (8) is fixed to the screen drum (2) by means of bolts.

Images