Anti-grading system for crushed chicken feed

Abstract

The invention belongs to the field of feed processing equipment, and discloses a crushed chicken feed anti-grading system which comprises first screening equipment, winnowing separation equipment, second screening equipment, lifting equipment and a stock bin which are sequentially connected with an external crusher, and the winnowing separation equipment is used for separating granular materials and light materials in materials; a first articulated chute is arranged between the lifting equipment and the stock bin and is used for guiding materials screened by the second screening equipment into the stock bin through an inclined runner; and a plurality of discharge holes are sequentially formed in the side wall of the first articulated chute from top to bottom. According to the main optimization measure of the system, a chute with a plurality of discharge ports is adopted to guide crushed materials into the stock bin, so that the impact speed of the materials is reduced, the re-crushing degree is reduced, and feed grading can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the field of feed processing equipment, and particularly to a grading prevention system for crushed chicken feed. Background Art

[0002] During the production process of chicken feed, in order to meet different feed requirements, some raw materials need to be crushed into appropriate particle sizes, such as corn. In the breeding process of broilers and laying hens, the particle size of corn is closely related to the size of the chicken gizzard.

[0003] In the existing production process of our company, taking corn as an example, its crushing production process is: crushing - sieving - pneumatic separation to remove dust and debris - sieving - entering the warehouse; according to the statistics from 2018 to 2020, after the raw materials are crushed and enter the warehouse, the crushing rate increases by 5% - 8%, and in the most serious cases, it reaches more than 13%. This is unacceptable for effectively controlling the particle size of the feed within an acceptable range.

[0004] At the same time, different particle sizes of the feed will cause internal grading of the feed, resulting in different particle sizes of the materials in different products when this material is mixed with other materials, and further affecting the product and causing grading phenomenon in the product.

[0005] Therefore, the technical problem to be solved in this case is: how to reduce the re - crushing degree of the grain materials after crushing and avoid re - grading of the feed. Summary of the Invention

[0006] The purpose of the present invention is to provide a grading prevention system for crushed chicken feed. The main optimization measure of this system is to use a chute with multiple discharge ports to introduce the crushed materials into the silo, reduce the impact speed of the materials, reduce the re - crushing degree, and effectively avoid feed grading.

[0007] To achieve the above purpose, the present application discloses:

[0008] A grading prevention system for crushed chicken feed, comprising a first screening device, a pneumatic separation device for separating granular materials and light materials in the materials, a second screening device, a lifting device, and a silo, which are sequentially connected to an external crusher; a first chute is provided between the lifting device and the silo, and the first chute is used to introduce the materials screened by the second screening device into the silo through an inclined flow channel; a plurality of discharge ports are sequentially arranged on the side wall of the first chute from top to bottom.

[0009] In the above - mentioned grading prevention system for chicken feed, the first chute extends to the middle - lower part or the bottom of the silo.

[0010] In the above chicken feed anti-classification system, the discharge port of the first chute faces the center of the silo, and the width of the discharge port perpendicular to the axis of the first chute is 1 / 3 to 1 / 2 of the circumference of the first chute.

[0011] In the above chicken feed anti-classification system, a buffer bin is provided at the inlet of the first chute, and the buffer bin is used to receive the materials dumped by the lifting equipment; a railing is provided on the buffer bin; the width of the railing is 4 to 5 mm.

[0012] In the above chicken feed anti-classification system, the air separation equipment includes a housing, a bulk material cone arranged inside the housing, and an air suction port; the top of the housing is a feed inlet, and the bottom of the housing is a discharge port; the inside of the bulk material cone is a cavity; the bulk material cone is used to guide the materials input from the feed inlet to the periphery of the housing and converge towards the discharge port; the air suction pipe of the air suction port extends below the bulk material cone; an air inlet is provided on the outer wall of the housing; the air inlet is located below the bulk material cone.

[0013] In the above chicken feed anti-classification system, the air separation equipment further includes a collection pipe; the collection pipe is sleeved on the outer wall of the air suction pipe, and an annular gas channel is formed between the collection pipe and the side wall of the bulk material cone; the air sucked by the air suction pipe enters the air suction pipe through the gas channel.

[0014] In the above chicken feed anti-classification system, the width of the air suction pipe is 1 / 10 to 1 / 15 of the diameter of the bulk material cone; the upper part of the bulk material cone is a conical cover and the lower part is an annular cover; the collection pipe extends into the annular cover.

[0015] In the above chicken feed anti-classification system, the second screening equipment is a vibrating screen with one or more layers of sieve meshes.

[0016] In the above chicken feed anti-classification system, the first screening equipment is a single-layer cylindrical screen; an inclined second chute is provided between the externally provided pulverizer and the first screening equipment.

[0017] In the above chicken feed anti-classification system, the materials are one or more of corn, soybean meal, cottonseed meal, and peanut meal.

[0018] This application has at least the following beneficial effects:

[0019] The system of the present invention uses a chute with multiple discharge ports to introduce the pulverized materials into the silo, reducing the impact speed of the materials and the degree of re-pulverization, and effectively avoiding feed classification.

[0020] In a further preferred embodiment, we have provided a grid of specific specifications at the inlet of the first chute. This grid can ensure that the corn kernels can smoothly enter the chute without causing a large amount of materials to quickly enter the chute, further reducing the impact force and the degree of re-crushing.

[0021] In a further preferred embodiment, a specifically designed air separation device is adopted, which can effectively separate the light materials, so that there will not be too many light materials in the second screening device, improving the uniformity of the particle size of the materials entering the silo.

[0022] In a further preferred embodiment, in order to reduce the degree of re-crushing, a chute is added to the first screening device. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0024] Figure 2 is a side view of the first chute of Embodiment 1 of the present invention;

[0025] Figure 3 is a schematic structural diagram of the air separation device of Embodiment 1 of the present invention; Detailed Embodiments

[0026] The present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.

[0027] Embodiment 1

[0028] Refer to Figures 1 to 3 , a grading prevention system for crushed chicken feed, comprising a first screening device 1, an air separation device 2 for separating granular materials and light materials in corn, a second screening device 3, a lifting device 4 and a silo 5, which are sequentially connected to an external pulverizer; a first chute 6 is provided between the lifting device 4 and the silo 5, and the first chute 6 is used to introduce the corn kernels screened by the second screening device 3 into the silo 5 through an inclined flow channel; a plurality of discharge ports 7 are sequentially provided on the side wall of the first chute 6 from top to bottom. In the present invention, the material is one or more of corn, soybean meal, cottonseed meal, and peanut meal.

[0029] In traditional methods, most of the materials are directly introduced into the silo 5. During production, we found that this operation would cause the corn kernels to impact the bottom of the silo 5 at a relatively high speed. To solve this problem, we added a chute pipe. Discharge ports 7 are opened at different depths of the silo 5 on this chute pipe; the opening intervals of the discharge ports 7 are 20 cm, 30 cm, or 40 cm; when one discharge port 7 is blocked by materials, the previous discharge port 7 continues to discharge materials; preferably, the first chute pipe 6 extends to the middle lower part or the bottom of the silo 5. The first chute pipe 6 determines its inclination angle according to the height and diameter of the silo 5. Generally speaking, we recommend that the inclination angle be the angle between the line connecting the center of the bottom of the silo 5 and the edge of the top of the silo 5 and the axis; of course, a smaller angle is also acceptable. No matter from which angle, having an inclination angle will reduce the sliding speed of the materials, reduce the impact between the materials and the bottom of the silo or the materials at the bottom of the silo, so as to avoid the phenomenon of re-grinding.

[0030] Preferably, the discharge port 7 of the first chute pipe 6 faces the center of the silo 5, and the width of the discharge port 7 perpendicular to the axis of the first chute pipe 6 is 1 / 3 to 1 / 2 of the circumference of the first chute pipe 6. In some embodiments of the present invention, the width of the discharge port 7 perpendicular to the axis of the first chute pipe 6 is 0.33, 0.4, 0.45, or 0.5 times the circumference of the first chute pipe 6.

[0031] Preferably, a buffer bin 8 is provided at the inlet of the first chute pipe 6, and the buffer bin 8 is used to receive the materials dumped by the lifting device 4; a fence is provided on the buffer bin 8; the width and length of the grid of the fence are both 4 - 5 mm.

[0032] In the old design of this project, we used a fence with a grid length and width of 1 - 2 cm. This kind of fence has almost no blocking effect on the materials and can only prevent larger external equipment parts from falling into the bin; after optimization, we found that the preferred specifications of the present invention can effectively reduce the dropping impact force of the corn and will not significantly delay the feeding speed.

[0033] In some preferred embodiments of the present invention, by optimizing the air separation device, the material classification can be effectively reduced. Specifically, the air separation device 2 includes a housing 21, a bulk material cone 22 arranged inside the housing 21, and an air suction port 23; the top of the housing 21 is a feed inlet 24, and the bottom of the housing 21 is a discharge port 25; the inside of the bulk material cone 22 is a cavity; the bulk material cone 22 is used to guide the materials input from the feed inlet 24 to the surrounding of the housing 21 and converge towards the discharge port 25; the suction pipe of the air suction port 23 extends below the bulk material cone 22; an air inlet 26 is provided on the outer wall of the housing 21; the air inlet 26 is located below the bulk material cone 22. Preferably, the air inlet 26 is annularly opened on the housing in a grid shape.

[0034] The material is dispersed in an umbrella shape through the bulk material cone 22. During this process, the air suction port 23 sucks air, creating a negative pressure inside the housing 21. The outside air will pass through the falling material and enter the air suction pipe, achieving the purpose of separating light materials.

[0035] To improve the separation effect of light materials, the air separation device further includes a collecting pipe 27; the collecting pipe 27 is sleeved on the outer wall of the air suction pipe, and an annular gas channel 28 is formed between the collecting pipe 27 and the side wall of the bulk material cone 22; the air sucked by the air suction pipe passes through the gas channel 28 and enters the air suction pipe.

[0036] The annular gas channel 28 has two advantages. The first advantage is that it can make the gas turn, preventing particulate materials from being sucked into the bulk material cone 22; the second advantage is that it can improve the collection effect of the collecting pipe 27 on light materials, preventing excessive light materials from entering the air suction pipe. Specifically, the gas flow rate is relatively large at the position of the gas channel 28, but the space inside the bulk material cone 22 is large. When the gas enters the bulk material cone 22, the gas flow rate suddenly decreases. At this time, the light materials will slow down and fall into the collecting pipe 27, preventing excessive amounts from being carried away by the air suction pipe.

[0037] Preferably, the width of the air suction pipe is 1 / 10 to 1 / 15 of the diameter of the bulk material cone 22; the upper part of the bulk material cone 22 is a conical cover and the lower part is an annular cover; the collecting pipe 27 extends into the annular cover. The second screening device 3 is a vibrating screen with one or more layers of sieve meshes, and the first screening device 1 is a single-layer cylindrical screen; an inclined second chute is provided between the externally provided pulverizer and the first screening device 1.

[0038] After adopting the above equipment, the phenomenon of excessive grading and powder in laying hen feed has been completely changed. The powder content rate of laying hen feed has decreased from 8% on a 40-mesh sieve before improvement to 2.6% on a 40-mesh sieve after improvement.

Claims

1. A system for preventing grading of crushed chicken feed, characterized in that: It includes a first screening device connected to an external crusher in sequence, an air separation device for separating granular materials and light materials in the material, a second screening device, a lifting device and a silo; a first chute is provided between the lifting device and the silo, and the first chute is used to guide the material screened by the second screening device into the silo through an inclined flow channel; the side wall of the first chute is provided with multiple discharge ports in sequence from top to bottom.

2. The chicken feed anti-grading system according to claim 1, characterized in that: The first chute extends to the lower middle part or the bottom of the silo.

3. The chicken feed anti-grading system according to claim 2, characterized in that: The discharge port of the first chute faces the center of the silo, and the width of the discharge port perpendicular to the axis of the first chute is 1 / 3 to 1 / 2 of the circumference of the first chute.

4. The chicken feed anti-grading system according to claim 1, characterized in that: A buffer bin is provided at the entrance of the first chute, and the buffer bin is used to receive materials dumped by the lifting equipment; a fence is provided on the buffer bin; the width of the fence is 4 to 5 mm.

5. The chicken feed anti-grading system according to claim 1, characterized in that: The air separation equipment includes a shell, a bulk material cone arranged inside the shell, and an air suction port; the top of the shell is a feed port, and the bottom of the shell is a discharge port; the interior of the bulk material cone is a cavity; the bulk material cone is used to guide the material input from the feed port to the surroundings of the shell and converge at the discharge port; the suction duct of the air suction port extends to the bottom of the bulk material cone; the outer wall of the shell is provided with an air inlet; the air inlet is located below the bulk material cone.

6. The chicken feed anti-grading system according to claim 5, characterized in that: The air selection equipment also includes a collecting pipe; the collecting pipe is sleeved on the outer wall of the suction pipe, and an annular gas channel is formed between the collecting pipe and the side wall of the bulk cone; the wind sucked by the suction pipe enters the suction pipe through the gas channel.

7. The chicken feed anti-grading system according to claim 6, characterized in that: The width of the air suction duct is 1 / 10 to 1 / 15 of the diameter of the bulk material cone; the upper part of the bulk material cone is a conical cover and the lower part is an annular cover; the collecting pipe extends into the annular cover.

8. The chicken feed anti-grading system according to claim 1, characterized in that: The second screening device is a vibrating screen having one or more layers of screens.

9. The chicken feed anti-grading system according to claim 1, characterized in that: The first screening device is a single-layer cylindrical screen; an inclined second chute is provided between the external crusher and the first screening device.

10. The chicken feed anti-grading system according to claim 1, characterized in that: The material is one or more of corn, soybean meal, cottonseed meal and peanut meal.

Images