Livestock and fish feed screening device

Abstract

The utility model discloses a kind of livestock fish feed screening devices, including fixed shell, screen mesh mechanism is provided in fixed shell, the fixed shell is cylindrical shell structure, power mechanism is provided in fixed shell and is rotated by power mechanism and drives screen mesh mechanism to carry out rotating action;Add material mechanism is provided below screen mesh mechanism, add material mechanism is connected with fixed shell and adds trace material to the granular material obtained by screening on;The screen mesh mechanism includes upper layer screen mesh piece, lower layer screen mesh piece, rotating ring, upper layer screen mesh piece is set above lower layer screen mesh piece and both are connected with power mechanism, the aperture of upper layer screen mesh piece is greater than the aperture of lower layer screen mesh piece, upper layer screen mesh piece bottom end edge and lower layer screen mesh piece top end edge are all fixedly connected with rotating ring inner wall, rotating ring outer wall is rotatably connected with fixed shell inner wall.

Description

Technical Field

[0001] This utility model relates to the field of feed production, and in particular to a screening device for livestock and fish feed. Background Technology

[0002] In the production process, feed needs to go through mixing, extrusion, pelleting, and screening in sequence to finally obtain feed pellets that meet the particle size specifications. Patent No. ZL201721810235.2 discloses a feed pellet screening machine, which can screen the pelleted feed pellets to obtain feed pellets of the required particle size. However, the extrusion and pelleting processes of feed are both carried out in a high-temperature environment. Additives, vitamins, and other trace components added during the feed mixing process will experience nutrient loss in the high-temperature environment. This leads to a decrease in the nutritional value of the produced feed, thereby reducing the production quality of livestock and fish feed. It is necessary to improve this process. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a livestock and fish feed screening device with a simple structure that can effectively improve the nutritional content and production quality of feed.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A livestock and fish feed screening device includes a fixed shell with a screen mechanism inside. The fixed shell has a cylindrical shell structure. A power mechanism is installed inside the fixed shell and drives the screen mechanism to rotate. A feeding mechanism is installed below the screen mechanism and is connected to the fixed shell to add trace amounts of material to the sieving granular material. The screen mechanism includes an upper screen, a lower screen, and a rotating ring. The upper screen is positioned above the lower screen and both are connected to the power mechanism. The aperture of the upper screen is larger than that of the lower screen. The bottom edge of the upper screen and the top edge of the lower screen are fixedly connected to the inner wall of the rotating ring. The outer wall of the rotating ring is rotatably connected to the inner wall of the fixed shell.

[0005] Furthermore, the upper screen component is cone-shaped and includes a central ring, a first support frame, and a first screen. The central ring is keyed to the power mechanism. Several first support frames are arranged around the outer periphery of the central ring. One end of the first support frame is fixedly connected to the outer wall of the central ring, and the other end of the first support frame is inclined downward and fixedly connected to the inner wall of the rotating ring. A first screen is arranged between adjacent first support frames, and the edge of the first screen is fixedly connected to the first support frame, the rotating ring, and the central ring.

[0006] Furthermore, the side wall of the fixed housing is provided with an upper discharge port. There are several upper discharge ports, and these ports are equally spaced along the circumference of the fixed housing. The upper discharge ports are located at the upper end of the rotating ring, and the bottom end wall of the upper discharge port is flush with the bottom edge of the first screen.

[0007] Furthermore, the lower screen component is funnel-shaped and includes a central feed pipe, a second support frame, and a second screen. The central feed pipe is coaxially arranged with the fixed housing. Several second support frames are arranged along the circumference of the central feed pipe at the outer periphery of the top of the central feed pipe. One end of the second support frame is fixedly connected to the outer wall of the central feed pipe, and the other end of the second support frame is inclined upward and fixedly connected to the inner wall of the rotating ring. The middle part of the second support frame is fixedly connected to the power mechanism. A second screen is arranged between adjacent second support frames, and the edge of the second screen is fixedly connected to the second support frame, the central feed pipe, and the rotating ring.

[0008] Furthermore, the bottom end of the fixed housing is tapered and narrowed, and a discharge port is provided at the center of the bottom end of the fixed housing; the inner diameter of the discharge port is larger than the outer diameter of the central discharge pipe, and the bottom end of the central discharge pipe extends from the discharge port to the outside of the fixed housing.

[0009] Furthermore, the power mechanism includes a power motor, a central shaft, and support shafts. The power motor is fixedly connected to the center of the top of the fixed housing. The power motor is connected to the top of the central shaft via a coupling. The bottom end of the central shaft extends into the fixed housing and passes through the central ring before being fixedly connected to several support shafts. The side wall of the central shaft is keyed to the inner wall of the central ring. The several support shafts are correspondingly arranged with several second support frames. One end of the support shaft is fixedly connected to the bottom end of the central shaft, and the other end of the support shaft is fixedly connected to the middle of the corresponding second support frame.

[0010] Furthermore, the feeding mechanism includes an air passage ring pipe and an atomizing component. The air passage ring pipe is arranged in an annular shape and fixedly sleeved on the outside of the fixed housing. Several air outlet pipes are arranged along the circumference of the air passage ring pipe on its inner wall. One end of each air outlet pipe is connected to the air passage ring pipe, and the other end of each air outlet pipe extends into the fixed housing and is inclined in a clockwise or counterclockwise direction. The air outlet pipes are all located below the lower screen component and are inclined upward. An air passage interface is provided on one side of the air passage ring pipe and is connected to the air supply pipeline through the air passage interface. The atomizing component is located at the bottom end of the air passage ring pipe and is connected to the air passage ring pipe.

[0011] Furthermore, the atomizing assembly includes an atomizing shell and an atomizer. The atomizing shell is arranged in an annular shape and is fixedly sleeved on the outside of the fixed shell and located at the bottom of the gas path ring pipe. Several connecting pipes are arranged on the atomizing shell along the circumferential direction and are connected to the gas path ring pipe through the connecting pipes. An atomizer is arranged inside the atomizing shell, and a liquid inlet for adding trace amounts of liquid material is arranged on one side of the atomizing shell.

[0012] Furthermore, the top of the fixed housing is provided with an inlet for feed pellets to enter, and a plug is provided inside the inlet to control the opening and closing state of the inlet.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are: In this invention, during feed production, no additives, vitamins, or other trace elements are added during the mixing stage. After high-temperature granulation, the formed feed pellets enter the fixed shell through the inlet. After being screened by the upper screen, excessively large pellets are discharged from the upper outlet. The remaining pellets pass through the screen holes of the upper screen and fall onto the lower screen. After being screened by the lower screen, excessively small pellets pass through the screen holes and are discharged from the outlet. Particles meeting the size standard are discharged from the central feed pipe, achieving a sieving effect for the pelleted feed. Furthermore, during the sieving process, additives, vitamins, and other trace materials are dissolved in water to form a liquid material, which is then fed into the atomizing shell. After being atomized by the atomizer, nutrient mist is generated. When connected to the air supply line in the air circuit ring pipe, the airflow carries the nutrient mist from the air outlet pipe into the fixed shell. The airflow entering the fixed shell cools the feed pellets after the pelleting process. At the same time, the cooled feed pellets come into contact with the nutrient mist and are adhered to and absorbed, achieving the fusion effect of trace nutrients with the feed pellets. This not only avoids the loss of nutrients in feed pellets caused by the extrusion and pelleting processes in existing processes, but also achieves the fusion of additives, vitamins and other trace elements with feed pellets in the screening process, effectively improving the nutritional value and production quality of the finished feed, and making a certain contribution to the production of livestock and fish feed. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention. Figure 3 for Figure 2 A magnified view of the local structure; Figure 4 This is a BB cross-sectional view of the present invention; Figure 5 This is a top view of the upper screen components; Figure 6 This is a top view of the lower screen component. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art to all other embodiments obtained without creative effort should be included within the protection scope of the present utility model.

[0017] like Figures 1 to 6 As shown in the figure, this embodiment discloses a livestock and fish feed screening device, including a fixed shell 1, which is a cylindrical shell structure. The top of the fixed shell 1 is provided with a feed inlet 102 for feed pellets to enter. A plug 103 is provided inside the feed inlet 102 to control the opening and closing state of the feed inlet 102. A screen mechanism and a power mechanism are provided inside the fixed shell 1, and the power mechanism drives the screen mechanism to rotate. A feeding mechanism is provided below the screen mechanism, which is connected to the fixed shell 1 and adds trace amounts of material to the screened pellets. The screen mechanism includes an upper screen component 2, a lower screen component 3, and a rotating ring 8. The upper screen component 2 is positioned above the lower screen component 3, and both are connected to a power mechanism. The aperture of the upper screen component 2 is larger than that of the lower screen component 3. The bottom edge of the upper screen component 2 and the top edge of the lower screen component 3 are fixedly connected to the inner wall of the rotating ring 8. The outer wall of the rotating ring 8 is rotatably connected to the inner wall of the fixed housing 1.

[0018] The upper screen component 2 is cone-shaped and includes a central ring 201, a first support frame 202, and a first screen 203. The central ring 201 is keyed to the power mechanism. Three first support frames 202 are arranged around the outer periphery of the central ring 201. One end of the first support frame 202 is fixedly connected to the outer wall of the central ring 201, and the other end of the first support frame 202 is inclined downward and fixedly connected to the inner wall of the top of the rotating ring 8. A first screen 203 is arranged between adjacent first support frames 202, and the edge of the first screen 203 is fixedly connected to the first support frame 202, the rotating ring 8, and the central ring 201.

[0019] The fixed housing 1 has an upper discharge port 101 on its side wall. There are several upper discharge ports 101, and these ports are evenly spaced along the circumference of the fixed housing 1. The upper discharge ports 101 are located on the upper end of the rotating ring 8, and the bottom end wall of the upper discharge port 101 is flush with the bottom edge of the first screen 203.

[0020] When screening the pelleted feed, the upper screen removes oversized feed particles to the top of the upper screen and discharges them from the upper outlet along the inclined surface of the upper screen, thus achieving the screening operation of oversized feed particles.

[0021] The lower screen component 3 is funnel-shaped and includes a central feed pipe 301, a second support frame 302, and a second screen 303. The central feed pipe 301 is coaxially arranged with the fixed housing 1. Three second support frames 302 are arranged along the circumference of the top outer periphery of the central feed pipe 301. One end of the second support frame 302 is fixedly connected to the outer wall of the central feed pipe 301, and the other end of the second support frame 302 is inclined upward and fixedly connected to the inner wall of the bottom end of the rotating ring 8. The middle part of the second support frame 302 is fixedly connected to the power mechanism. A second screen 303 is arranged between adjacent second support frames 302, and the edge of the second screen 303 is fixedly connected to the second support frame 302, the central feed pipe 301, and the rotating ring 8. The screen aperture of the second screen 303 is smaller than that of the first screen 203.

[0022] The bottom end of the fixed housing 1 is tapered and narrowed, and a discharge port 104 is provided at the center of the bottom end of the fixed housing 1; the inner diameter of the discharge port 104 is larger than the outer diameter of the central discharge pipe 301, and the bottom end of the central discharge pipe 301 extends from the discharge port 104 to the outside of the fixed housing 1.

[0023] Smaller pellets pass through the screen holes of the lower screen and fall to the bottom of the fixed shell, eventually being discharged from the discharge port. Pellets that meet the specified size flow along the inclined surface of the lower screen and are discharged from the central discharge pipe, thus achieving the screening operation of pellets.

[0024] The power mechanism includes a power motor 4, a central shaft 5, and support shafts 501. The power motor 4 is fixedly connected to the center of the top of the fixed housing 1. The power motor 4 is connected to the top of the central shaft 5 through a coupling. The bottom end of the central shaft 5 extends into the fixed housing 1 and passes through the central ring 201 before being fixedly connected to the three support shafts 501. The side wall of the central shaft 5 is keyed to the inner wall of the central ring 201. The three support shafts 501 are correspondingly arranged with three second support frames 302. One end of the support shaft 501 is fixedly connected to the bottom end of the central shaft 5, and the other end of the support shaft 501 is fixedly connected to the middle of the corresponding second support frame 302.

[0025] By driving the central shaft and support shaft with a power motor, the upper and lower screen components can rotate synchronously. This rotation allows the pelleted feed to be dispersed and screened at the top of the upper and lower screen components, improving the screening efficiency of the pelleted feed. At the same time, the structural design of the upper and lower screen components provides a stronger screen structure, which can fully realize the rotational power transmission of the power motor, thus improving the performance of the screening device.

[0026] The feeding mechanism includes an air passage ring pipe 6 and an atomizing component. The air passage ring pipe 6 is arranged in an annular shape and fixedly sleeved on the outside of the fixed housing 1. Six air outlet pipes 601 are arranged along the circumference of the air passage ring pipe 6 on the inner wall of the air passage ring pipe 6. One end of the six air outlet pipes 601 is connected to the air passage ring pipe 6, and the other end of the six air outlet pipes 601 extends into the fixed housing 1 and is inclined in a clockwise or counterclockwise direction. The six air outlet pipes 601 are all arranged below the lower screen 3 and are inclined upward. An air passage interface 602 is provided on one side of the air passage ring pipe 6 and is connected to the air supply pipeline through the air passage interface 602. The atomizing component is arranged at the bottom end of the air passage ring pipe 6 and is connected to the air passage ring pipe 6.

[0027] The atomizing assembly includes an atomizing shell 7 and an atomizer 701. The atomizing shell 7 is arranged in an annular shape and is fixedly sleeved on the outside of the fixed shell 1. The atomizing shell 7 is located at the bottom end of the gas path ring pipe 6. Six connecting pipes 703 are arranged along the circumference of the atomizing shell 7 and are connected to the gas path ring pipe 6 through the connecting pipes 703. The atomizer 701 is arranged inside the atomizing shell 7. A liquid inlet 702 for adding trace amounts of liquid material is arranged on one side of the atomizing shell 7.

[0028] Additives and vitamin liquids entering the atomizing shell through the liquid inlet are atomized by the atomizer. At the same time, gas is supplied into the gas loop pipe through the gas supply pipe. The gas comes out from the gas outlet pipe and carries the additives and vitamin mist out into the fixed shell under negative pressure. The additives and vitamin mists adhere to and blend with the feed particles on the screen, realizing the fusion operation of pellet feed with additives and vitamins, and improving the nutritional content of the finished feed. On the other hand, the design of all six air outlets being inclined in a clockwise or counterclockwise direction creates a spiral airflow. When this airflow comes into contact with the falling feed pellets, it causes the pellets to fall in a spiral pattern, which prolongs the falling time of the feed pellets and the contact time and area between the feed pellets and the additives and vitamin mist. This further improves the adhesion and fusion effect between the feed pellets and the additives and vitamins.

[0029] In this invention, during feed production, no additives, vitamins, or other trace elements are added during the mixing stage. After high-temperature granulation, the formed feed pellets enter the fixed shell through the inlet. After being screened by the upper screen, excessively large pellets are discharged from the upper outlet. The remaining pellets pass through the screen holes of the upper screen and fall onto the lower screen. After being screened by the lower screen, excessively small pellets pass through the screen holes and are discharged from the outlet. Particles meeting the size standard are discharged from the central feed pipe, achieving a sieving effect for the pelleted feed. Furthermore, during the sieving process, additives, vitamins, and other trace materials are dissolved in water to form a liquid material, which is then fed into the atomizing shell. After being atomized by the atomizer, nutrient mist is generated. When connected to the air supply line in the air circuit ring pipe, the airflow carries the nutrient mist from the air outlet pipe into the fixed shell. The airflow entering the fixed shell cools the feed pellets after the pelleting process. At the same time, the cooled feed pellets come into contact with the nutrient mist and are adhered to and absorbed, achieving the fusion effect of trace nutrients with the feed pellets. This not only avoids the loss of nutrients in feed pellets caused by the extrusion and pelleting processes in existing processes, but also achieves the fusion of additives, vitamins and other trace elements with feed pellets in the screening process, effectively improving the nutritional value and production quality of the finished feed, and making a certain contribution to the production of livestock and fish feed.

Claims

1. A livestock and fish feed screening device, comprising a fixed housing, wherein a screen mechanism is disposed within the fixed housing, characterized in that: The fixed housing has a cylindrical shell structure. A power mechanism is installed inside the fixed housing, which drives the screen mechanism to rotate. A feeding mechanism is installed below the screen mechanism, which is connected to the fixed housing and adds trace amounts of material to the granular material obtained by screening. The screen mechanism includes an upper screen, a lower screen, and a rotating ring. The upper screen is located above the lower screen and both are connected to the power mechanism. The aperture of the upper screen is larger than that of the lower screen. The bottom edge of the upper screen and the top edge of the lower screen are fixedly connected to the inner wall of the rotating ring. The outer wall of the rotating ring is rotatably connected to the inner wall of the fixed housing.

2. The livestock and fish feed screening device as described in claim 1, characterized in that: The upper screen component is cone-shaped and includes a central ring, a first support frame, and a first screen. The central ring is keyed to the power mechanism. Several first support frames are arranged around the outer periphery of the central ring. One end of the first support frame is fixedly connected to the outer wall of the central ring, and the other end of the first support frame is inclined downward and fixedly connected to the inner wall of the rotating ring. A first screen is arranged between adjacent first support frames, and the edge of the first screen is fixedly connected to the first support frame, the rotating ring, and the central ring.

3. The livestock and fish feed screening device as described in claim 2, characterized in that: The fixed housing has an upper discharge port on its side wall. There are several upper discharge ports, and these ports are evenly spaced along the circumference of the fixed housing. The upper discharge ports are located at the upper end of the rotating ring, and the bottom end wall of the upper discharge port is flush with the bottom edge of the first screen.

4. The livestock and fish feed screening device as described in claim 2, characterized in that: The lower screen component is funnel-shaped and includes a central feed pipe, a second support frame, and a second screen. The central feed pipe is coaxial with the fixed housing. Several second support frames are arranged around the outer periphery of the top of the central feed pipe along the circumferential direction of the central feed pipe. One end of the second support frame is fixedly connected to the outer wall of the central feed pipe, and the other end of the second support frame is inclined upward and fixedly connected to the inner wall of the rotating ring. The middle part of the second support frame is fixedly connected to the power mechanism. A second screen is arranged between adjacent second support frames, and the edge of the second screen is fixedly connected to the second support frame, the central feed pipe, and the rotating ring.

5. The livestock and fish feed screening device as described in claim 4, characterized in that: The bottom of the fixed housing is tapered and narrowed, and a discharge port is provided at the center of the bottom of the fixed housing; the inner diameter of the discharge port is larger than the outer diameter of the central discharge pipe, and the bottom end of the central discharge pipe extends from the discharge port to the outside of the fixed housing.

6. The livestock and fish feed screening device as described in claim 4, characterized in that: The power mechanism includes a power motor, a central shaft, and support shafts. The power motor is fixedly connected to the center of the top of the fixed housing. The power motor is connected to the top of the central shaft through a coupling. The bottom end of the central shaft extends into the fixed housing and passes through the central ring before being fixedly connected to several support shafts. The side wall of the central shaft is keyed to the inner wall of the central ring. The several support shafts are correspondingly arranged with several second support frames. One end of the support shaft is fixedly connected to the bottom end of the central shaft, and the other end of the support shaft is fixedly connected to the middle of the corresponding second support frame.

7. The livestock and fish feed screening device as described in claim 1, characterized in that: The feeding mechanism includes an air passage ring pipe and an atomizing component. The air passage ring pipe is arranged in an annular shape and fixedly sleeved on the outside of the fixed housing. Several air outlet pipes are arranged along the circumference of the air passage ring pipe on its inner wall. One end of each air outlet pipe is connected to the air passage ring pipe, and the other end of each air outlet pipe extends into the fixed housing and is inclined in a clockwise or counterclockwise direction. The air outlet pipes are all located below the lower screen component and are inclined upward. An air passage interface is provided on one side of the air passage ring pipe and is connected to the air supply pipeline through the air passage interface. The atomizing component is located at the bottom of the air passage ring pipe and is connected to the air passage ring pipe.

8. The livestock and fish feed screening device as described in claim 7, characterized in that: The atomizing assembly includes an atomizing shell and an atomizer. The atomizing shell is arranged in an annular shape and is fixedly sleeved on the outside of the fixed shell. The atomizing shell is located at the bottom of the gas path ring pipe. Several connecting pipes are arranged along the circumference of the atomizing shell and are connected to the gas path ring pipe through the connecting pipes. The atomizer is arranged inside the atomizing shell. A liquid inlet for adding trace amounts of liquid material is arranged on one side of the atomizing shell.

9. The livestock and fish feed screening device as described in claim 1, characterized in that: The top of the fixed housing is provided with a feed inlet for feed pellets to enter, and a plug is provided inside the feed inlet to control the opening and closing state of the feed inlet.

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