Livestock feed screening device

Abstract

The invention discloses a livestock feed screening device, and relates to the technical field of feed processing. A crushing mechanism is jointly installed between the upper portions of the inner walls of the two sides of the feed screening box, and two vibrating mechanisms and a screening net are installed between the lower portions of the inner walls of the two sides of the feed screening box; through cooperative work of a hot air blower, a hot air pipe, an air drying spray head, an air conveying pipe, a crushing roller and a driving assembly, efficient crushing and synchronous air drying of livestock feed are achieved, in the crushing process, hot air generated by the hot air blower is evenly blown to the feed through the hot air pipe and the air drying spray head, the humidity of the feed is effectively reduced, and the quality of the livestock feed is improved. According to the high-humidity feed screening device, the problems that high-humidity feed is caked and screen holes are blocked in the screening process are solved, meanwhile, the two crushing rollers rotating oppositely conduct powerful crushing on the feed through the crushing teeth on the surfaces of the crushing rollers, and through the design, the high-humidity feed treatment problem is solved, and the efficiency and stability of the whole screening process are improved.

Description

Technical Field

[0001] This invention relates to the field of feed processing technology, specifically to a livestock feed screening device. Background Technology

[0002] Livestock feed is a scientifically formulated mixture specifically designed to meet the growth, development, reproduction, and health needs of livestock, poultry, and other farmed animals. It is typically composed of energy feed, protein feed, minerals, vitamins, and amino acids in specific proportions. The aim is to improve animal growth rate, meat quality, and disease resistance through precise nutrition, ultimately increasing the production efficiency and economic benefits of animal husbandry. Modern livestock feed also emphasizes environmental protection and sustainability, contributing to green farming by reducing nitrogen and phosphorus emissions and improving feed conversion rates.

[0003] Chinese patent CN220328755U discloses a livestock feed screening device. By setting up a return mechanism, after the feed is screened on the screening screen, the large particles of feed slide towards the middle position on the screening screen and into the return box under the guidance of the guide plate. The feed is then conveyed upward by the spiral blades and conveyed through the guide pipe to the upper position inside the screening box, where it undergoes a second screening through the conveying mechanism and the screening screen. During the screening process, the feed is repeatedly screened multiple times to avoid the problem of insufficient screening.

[0004] When processing high-moisture feed, existing screening devices often encounter problems. Due to the high viscosity of the feed, it tends to adhere to the screening mesh and screen holes during screening. As the operation progresses, these particles accumulate and form stubborn, sticky clumps. These clumps block the screen holes, preventing qualified feed particles from passing through. This obstructs the flow of material within the screening device, leading to a sharp drop in screening efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a livestock feed screening device to solve the problem that existing devices easily clog the screen holes when processing high-moisture feed.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a livestock feed screening device, comprising a feed screening box;

[0007] A crushing mechanism is installed between the upper parts of the inner walls on both sides of the feed screening box. Two vibration mechanisms and a screening screen are installed between the lower parts of the inner walls on both sides of the feed screening box, and both vibration mechanisms are located below the screening screen. A dust collection mechanism is installed on the upper part of the outer wall on one side of the feed screening box.

[0008] The crushing mechanism includes a hot air blower, a hot air duct, drying nozzles, an air conveying pipe, crushing rollers, and a drive assembly. The hot air blower is installed on the outer wall of the feed screening box on the other side. The hot air duct is installed at the top of the hot air blower. Multiple drying nozzles are provided, and all of the multiple drying nozzles are installed inside the hot air duct. The other ends of the multiple drying nozzles are embedded in and communicate with the wall of the feed screening box. The air conveying pipe is installed on one side of the top of the hot air duct. Two crushing rollers are provided, and the two crushing rollers are respectively installed at the two output ends of the air conveying pipe. The drive assembly is installed at one end of one of the crushing rollers.

[0009] Furthermore, the crushing roller includes a rotating tube, a gear, a drive pulley, a diverter tube, a crushing cylinder, and crushing teeth. The rotating tube is installed between the upper parts of the inner walls on both sides of the feed screening box via bearings. The gear is installed on one side of the outer surface of the rotating tube. The drive pulley is inserted and installed at one end of the rotating tube. Multiple diverter tubes and crushing teeth are provided. Multiple diverter tubes are provided on the outer surface of the rotating tube. The crushing cylinder is installed in the middle of the outer surface of the rotating tube. Multiple crushing teeth are installed on the outer surface of the crushing cylinder.

[0010] Furthermore, the vibration mechanism includes a rotating shaft, vibrating rods, a universal joint, and a driven pulley. The rotating shaft is mounted between the lower inner walls of both sides of the feed screening box via bearings. Multiple vibrating rods are provided, and all of the vibrating rods are mounted on the outer surface of the rotating shaft. The universal joint is mounted on one end of the rotating shaft, and the driven pulley is mounted on the other end of the universal joint.

[0011] Furthermore, the vibrating rod includes a storage cylinder, a telescopic rod, a vibrating head, a limiting block, and a spring. The storage cylinder is inserted and installed on the outer wall of the rotating shaft. The telescopic rod is movably inserted into the top of the storage cylinder. The vibrating head is installed at the top of the telescopic rod. The limiting block is installed at the bottom of the telescopic rod. The spring is installed at the bottom of the limiting block, and the bottom of the spring is installed on the bottom inner wall of the storage cylinder.

[0012] Furthermore, the dust collection mechanism includes a dust collector, a dust collection pipe, a dust collection hood, and a support frame. The dust collection pipe is installed on the upper part of the outer wall of the dust collector, the dust collection hood is installed at the bottom end of the dust collection pipe, and the support frame is installed on the lower part of the outer wall of the dust collector, with the outer wall of the support frame installed on the outer wall of the feed screening box.

[0013] Furthermore, a feed hopper is installed at the top center of the feed screening box, a control panel is installed on the upper part of the outer wall of the other side of the feed screening box, a protective cover is installed at one end of the feed screening box, discharge frames are inserted and installed at the lower parts of both ends of the feed screening box, a guide plate is installed between the lower parts of the inner walls on both sides of the feed screening box, and the guide plate is located below the screening screen. The two crushing rollers are respectively connected to the two vibration mechanisms by a drive belt through a pulley.

[0014] Furthermore, the end of the diversion pipe away from the rotating pipe is flush with the outer surface of the crushing cylinder, the gears on the two crushing rollers mesh with each other, and the air supply pipe is configured as a Y-shaped structure.

[0015] Furthermore, the vibrating head is made of rubber and contacts the screen surface, the tilt angle of the rotating shaft is consistent with the tilt angle of the screen, and multiple vibrating rods are spirally distributed on the outer surface of the rotating shaft.

[0016] Furthermore, the dust collector is configured as a pulse bag dust collector, and the dust collection hood is located directly above the feed hopper.

[0017] Furthermore, the control panel is electrically connected to the crushing mechanism and the dust collection mechanism, the transmission belt is located inside the protective cover, the screening screen is installed at an angle to the right, and the guide plate is installed at an angle to the left.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] (1) This invention achieves efficient crushing and simultaneous air drying of livestock feed through the coordinated operation of a hot air blower, hot air pipe, air drying nozzle, air conveyor pipe, crushing roller and drive assembly. During the crushing process, the hot air generated by the hot air blower is evenly blown onto the feed through the hot air pipe and air drying nozzle, which effectively reduces the humidity of the feed and prevents the problem of high humidity feed clumping and clogging the screen holes during the screening process. At the same time, the two relatively rotating crushing rollers crush the feed with force through the crushing teeth on their surfaces. This design not only solves the problem of high humidity feed processing, but also improves the efficiency and stability of the overall screening process.

[0020] (2) This invention achieves vibration screening of feed by the coordinated work of a rotating shaft, vibrating rods, universal joints and driven pulleys. The rotating shaft rotates under the action of driving force, which drives multiple vibrating rods to beat the screening screen in an orderly manner. The design of the telescopic rod and spring in the vibrating rods makes the vibrating head have a certain elastic buffer when it contacts the screening screen, avoiding excessive damage to the screening screen. In addition, the linkage design of the vibration mechanism and the crushing mechanism realizes the rational transmission and utilization of power and reduces the overall energy consumption of the equipment.

[0021] (3) The present invention effectively absorbs the dust generated during the crushing and screening of feed by working together with the dust collector, the suction pipe, the dust collection hood and the support frame. The dust collection hood is located directly above the feed hopper and can quickly capture and suck up the generated dust. The dust is then transported to the pulse bag dust collector for fine filtration and dust removal through the suction pipe. This design not only realizes the effective recovery of feed crushed material and avoids resource waste, but also significantly improves the working environment and prevents dust pollution from affecting the health of operators. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention;

[0024] Figure 2 A structural cross-sectional view of a feed screening box is provided for embodiments of the present invention;

[0025] Figure 3 A structural schematic diagram of the crushing mechanism is provided for an embodiment of the present invention;

[0026] Figure 4 A cross-sectional view of the crushing roller is provided for an embodiment of the present invention;

[0027] Figure 5 A structural schematic diagram of the vibration mechanism is provided for embodiments of the present invention;

[0028] Figure 6 A cross-sectional view of the vibration rod is provided for embodiments of the present invention;

[0029] Figure 7 Provided for embodiments of the present invention Figure 2 Enlarged view of the structure of A in the middle;

[0030] Figure 8 A schematic diagram of the dust collection mechanism is provided for an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Feed screening box; 2. Crushing mechanism; 21. Hot air blower; 22. Hot air duct; 23. Drying nozzle; 24. Air conveyor duct; 25. Crushing roller; 251. Rotating tube; 252. Gear; 253. Drive pulley; 254. Diverter tube; 255. Crushing cylinder; 256. Crushing teeth; 26. Drive assembly; 3. Vibration mechanism; 31. Rotating shaft; 32. Vibrating rod; 321. Collection cylinder; 322. Telescopic rod; 323. Vibrating head; 324. Limiting block; 325. Spring; 33. Universal joint; 34. Driven pulley; 4. Dust collection mechanism; 41. Dust collector; 42. Dust collection pipe; 43. Dust collection hood; 44. Support frame; 5. Screening screen; 6. Feed hopper; 7. Control panel; 8. Protective cover; 9. Discharge frame; 10. Guide plate; 11. Drive belt. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] As attached Figure 1 To be continued Figure 8 As shown:

[0035] Example 1:

[0036] This invention provides a livestock feed screening device, including a feed screening box 1;

[0037] A crushing mechanism 2 is installed between the upper parts of the inner walls on both sides of the feed screening box 1. Two vibration mechanisms 3 and a screening screen 5 are installed between the lower parts of the inner walls on both sides of the feed screening box 1, and both vibration mechanisms 3 are located below the screening screen 5. A dust collection mechanism 4 is installed on the upper part of the outer wall on one side of the feed screening box 1.

[0038] The crushing mechanism 2 includes a hot air blower 21, a hot air pipe 22, a drying nozzle 23, an air conveying pipe 24, a crushing roller 25, and a drive assembly 26. The hot air blower 21 is installed on the outer wall of the other side of the feed screening box 1. The hot air pipe 22 is installed on the top of the hot air blower 21. Multiple drying nozzles 23 are provided, and all drying nozzles 23 are installed inside the hot air pipe 22. The other ends of the multiple drying nozzles 23 are embedded in and communicate with the wall of the feed screening box 1, and are used to spray hot air into the feed screening box 1 to dry the feed. The air conveying pipe 24 is installed on one side of the top of the hot air pipe 22. There are two crushing rollers 25, and the two crushing rollers 25 are respectively installed on the two output ends of the air conveying pipe 24. The drive assembly 26 is installed on one end of the crushing roller 25 on one side. The drive assembly 26 is a motor used to drive the crushing roller 25 in the crushing mechanism 2 to rotate.

[0039] The crushing roller 25 includes a rotating tube 251, a gear 252, a drive pulley 253, a diversion tube 254, a crushing cylinder 255, and crushing teeth 256. The rotating tube 251 is installed between the upper parts of the inner walls on both sides of the feed screening box 1 through bearings. The gear 252 is installed on one side of the outer surface of the rotating tube 251. The drive pulley 253 is inserted into one end of the rotating tube 251. Multiple diversion tubes 254 and crushing teeth 256 are provided. Multiple diversion tubes 254 are all provided on the outer surface of the rotating tube 251. The crushing cylinder 255 is installed in the middle of the outer surface of the rotating tube 251. Multiple crushing teeth 256 are all installed on the outer surface of the crushing cylinder 255. The crushing teeth 256 are used to crush the incoming feed.

[0040] A feed hopper 6 is installed at the top center of the feed screening box 1. A control panel 7 is installed on the upper part of the outer wall of the other side of the feed screening box 1. A protective cover 8 is installed at one end of the feed screening box 1. Discharge frames 9 are inserted and installed at the lower parts of both ends of the feed screening box 1. A guide plate 10 is installed between the lower parts of the inner walls on both sides of the feed screening box 1, and the guide plate 10 is located below the screening screen 5. The two crushing rollers 25 are connected to the two vibration mechanisms 3 by a drive belt 11 through a pulley.

[0041] The end of the diversion pipe 254 away from the rotating pipe 251 is flush with the outer surface of the crushing cylinder 255. After the hot air enters the rotating pipe 251 through the air supply pipe 24, it is diverted by the diversion pipe 254 and enters the area around the crushing cylinder 255 to assist the crushing process and further dry the feed. The gears 252 on the two crushing rollers 25 mesh to realize the synchronous reverse rotation of the two crushing rollers 25. The air supply pipe 24 is set with a Y-shaped structure. The Y-shaped air supply pipe 24 facilitates the diversion of hot air into the two rotating pipes 251.

[0042] The control panel 7 is electrically connected to the crushing mechanism 2 and the dust collection mechanism 4. The control panel 7 can control the start and stop of the crushing mechanism 2 and the dust collection mechanism 4, as well as adjust their working parameters, such as the wind speed of the hot air blower 21 and the rotation speed of the drive component 26, to achieve automated control of the entire device. The transmission belt 11 is located inside the protective cover 8, so that the protective cover 8 protects the transmission belt 11. The screening screen 5 is installed at an angle to the right. The angled installation of the screening screen 5 makes it easy for the screened feed to move to one side under its own weight and vibration, which is convenient for discharge. The guide plate 10 is installed at an angle to the left. The guide plate 10 is used to guide the feed falling from the screening screen 5 to move to the discharge frame 9 on the other side, so as to realize the separate discharge of feed of different particle sizes.

[0043] Working Principle: First, livestock feed is fed into the feed screening box 1 through the feed hopper 6. Then, the operator starts the crushing mechanism 2 through the control panel 7. The drive component 26 drives the rotating tube 251 of one side of the crushing roller 25 to rotate. The two crushing rollers 25 rotate synchronously relative to each other through the meshing of gears 252. During the rotation, the crushing teeth 256 on the surface of the crushing cylinder 255 efficiently crush the feed, ensuring uniform particle size and improving the subsequent screening efficiency. The hot air blower 21 blows hot air onto the feed through the hot air pipe 22 and the drying nozzle 23 to reduce feed moisture and prevent clumping. At the same time, the hot air enters the rotating tube 251 through the air conveyor 24, and then is evenly blown onto the feed on the outer surface of the crushing cylinder 255 through multiple diversion pipes 254, which can efficiently dry the feed during the crushing process. The drying process effectively reduces the moisture content of the feed, preventing clumping and screen blockage caused by high-moisture feed during screening. This achieves efficient crushing and simultaneous air drying of livestock feed, solving the problem of handling high-moisture feed and improving the efficiency and stability of the overall screening process. The crushed feed falls onto the screening screen 5 under gravity. At this time, two vibrating mechanisms 3 regularly tap the screening screen 5 to generate vibration, achieving precise screening of the feed. The qualified feed slides to the left along the guide plate 10 to the discharge frame 9 after passing through the screening screen 5, while the large particles that do not pass through slide down the right-inclined screening screen 5 to the discharge frame 9 on the other side, where they can be collected and fed back into the feed screening box 1 through the feed hopper 6 for secondary crushing and screening of the unqualified feed.

[0044] Example 2:

[0045] This embodiment is basically the same as the previous embodiment, except that the vibration mechanism 3 includes a rotating shaft 31, a vibrating rod 32, a universal joint 33, and a driven pulley 34. The rotating shaft 31 is installed between the lower inner walls of both sides of the feed screening box 1 through bearings. Multiple vibrating rods 32 are provided, and all of the multiple vibrating rods 32 are installed on the outer surface of the rotating shaft 31. The universal joint 33 is installed at one end of the rotating shaft 31. The universal joint 33 can flexibly transmit power, so that the driven pulley 34 can drive the rotating shaft 31 to rotate. The driven pulley 34 is installed at the other end of the universal joint 33. The driven pulley 34 is connected to the driving pulley 253 on the intermediate crushing roller 25 through the transmission belt 11 to realize the transmission of power. That is, when the crushing roller 25 rotates, it drives the rotating shaft 31 to rotate through the transmission belt 11.

[0046] The vibrating rod 32 includes a storage cylinder 321, a telescopic rod 322, a vibrating head 323, a limiting block 324, and a spring 325. The storage cylinder 321 is inserted and installed on the outer wall of the rotating shaft 31. The telescopic rod 322 is movably inserted into the top of the storage cylinder 321. The vibrating head 323 is installed on the top of the telescopic rod 322. The limiting block 324 is installed on the bottom of the telescopic rod 322. The spring 325 is installed on the bottom of the limiting block 324, and the bottom of the spring 325 is installed on the bottom inner wall of the storage cylinder 321.

[0047] The vibrating head 323 is made of rubber and contacts the screen surface of the screening screen 5. The rubber material has good elasticity and wear resistance, which can reduce damage to the screening screen 5 and ensure good vibration transmission effect. The vibrating head 323 can directly apply vibration to the screening screen 5. The tilt angle of the rotating shaft 31 is consistent with the tilt angle of the screening screen 5. This design allows the vibrating rod 32 to maintain good contact with the screening screen 5 during rotation, ensuring that the vibration effect is evenly applied to the entire screening screen 5, improving screening efficiency and quality. Multiple vibrating rods 32 are spirally distributed on the outer surface of the rotating shaft 31. This distribution method can make the vibration effect more evenly distributed on the screening screen 5.

[0048] Working principle: When the crushing mechanism 2 is started, its driving pulley 253 transmits the driving force to the driven pulley 34 of the vibrating mechanism 3 through the transmission belt 11. The driven pulley 34 drives the rotating shaft 31 to rotate through the universal joint 33. Since the inclination angle of the rotating shaft 31 is consistent with that of the screening screen 5, and multiple vibrating rods 32 are spirally distributed on its surface, the receiving cylinder 321 on the vibrating rod 32 rotates synchronously when rotating. The telescopic rod 322 extends outward under the elastic force of the spring 325, causing the rubber vibrating head 323 at its top to periodically strike the screen surface of the screening screen 5, thereby realizing vibratory screening. During the impact, the elasticity of the spring 325 causes the telescopic rod 322 to retract into the storage cylinder 321, providing the vibrating head 323 with a certain degree of elastic buffer when it contacts the screening screen 5, thus preventing the vibrating head 323 from causing rigid damage to the screening screen 5. At the same time, the spirally distributed vibrating rod 32 ensures that the force is evenly distributed in all areas of the screening screen 5, further improving the screening efficiency. This design, through the combination of elastic buffer and spiral layout, not only ensures the vibrating screening effect but also extends the service life of the screening screen 5. In addition, the linkage design between the vibrating mechanism 3 and the crushing mechanism 2 realizes the rational transmission and utilization of power, reducing the overall energy consumption of the equipment.

[0049] Example 3:

[0050] This embodiment is basically the same as the previous embodiment, except that the dust collection mechanism 4 includes a dust collector 41, a dust collection pipe 42, a dust collection hood 43, and a support frame 44. The dust collection pipe 42 is installed on the upper part of the outer wall of the dust collector 41, the dust collection hood 43 is installed on the bottom end of the dust collection pipe 42, and the support frame 44 is installed on the lower part of the outer wall of the dust collector 41. The outer wall of the support frame 44 is installed on the outer wall of the feed screening box 1. The support frame 44 can firmly fix the dust collector 41 on the feed screening box 1, ensuring the stability of the entire dust collection mechanism 4, so that it can work continuously and stably during the operation of the equipment.

[0051] The dust collector 41 is configured as a pulse bag dust collector, which has a high dust removal capacity. It filters dust-laden gas through filter bags, trapping dust on the surface of the filter bags. Then, the filter bags are cleaned periodically by a pulse jet cleaning device to maintain good filtration performance. The dust collection hood 43 is located directly above the feed hopper 6, so that the dust collection hood 43 can accurately cover the area above the feed hopper 6. Because a large amount of dust will be generated near the feed hopper 6 when the feed enters the feed hopper 6 and during the subsequent crushing and screening process, the precise positioning of the dust collection hood 43 can collect this dust to the maximum extent. The dust collection hood 43 can also be added and set above the discharge frame 9. Then, the dust collection hood 43 is connected to the dust collector 41 through a pipeline. In this way, the dust generated when the feed is discharged can be captured by the dust collection hood 43 and pumped to the dust collector 41 for treatment through the pipeline.

[0052] Working principle: When livestock feed is fed into the device through the feed hopper 6, the dust collection hood 43, located directly above the feed hopper 6, can immediately capture the dust generated during the feed's descent, as well as the dust generated during the crushing and screening processes. At this time, the dust collector 41 generates a negative pressure airflow through the suction pipe 42, drawing the dust within the range of the dust collection hood 43 into the dust collector 41, effectively collecting the dust generated during the crushing and screening processes. The dust collector 41 uses filter bags to filter the dust-laden gas; the dust is trapped on the surface of the filter bags, while the clean gas passes through the filter bags and is discharged. Dust collector 41 is a pulse jet baghouse dust collector. As the filtration process continues, the dust accumulated on the surface of the filter bags is periodically removed by the pulse jet cleaning device and falls into the dust collection bin at the bottom of dust collector 41. This design, with the high-efficiency filtration function of the pulse jet baghouse dust collector, realizes real-time recovery and purification of dust during the feed feeding stage. This not only avoids resource waste but also significantly improves the working environment, effectively preventing dust overflow from polluting the environment and affecting the health of operators. At the same time, the high-efficiency dust removal performance of the pulse jet baghouse dust collector ensures the cleanliness of the exhaust gas, meeting environmental protection requirements.

[0053] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A livestock feed screening device, characterized in that, include: Feed screening box (1); A crushing mechanism (2) is installed between the upper parts of the inner walls on both sides of the feed screening box (1). Two vibration mechanisms (3) and a screening screen (5) are installed between the lower parts of the inner walls on both sides of the feed screening box (1), and both vibration mechanisms (3) are located below the screening screen (5). A dust collection mechanism (4) is installed on the upper part of the outer wall on one side of the feed screening box (1). The crushing mechanism (2) includes a hot air blower (21), a hot air pipe (22), a drying nozzle (23), an air conveying pipe (24), a crushing roller (25), and a drive assembly (26). The hot air blower (21) is installed on the outer wall of the feed screening box (1) on the other side. The hot air pipe (22) is installed on the top of the hot air blower (21). There are multiple drying nozzles (23), and all of them are installed inside the hot air pipe (22). The other ends of the multiple drying nozzles (23) are embedded in and connected to the wall of the feed screening box (1). The air conveying pipe (24) is installed on one side of the top of the hot air pipe (22). There are two crushing rollers (25), and the two crushing rollers (25) are respectively installed at the two output ends of the air conveying pipe (24). The drive assembly (26) is installed at one end of the crushing roller (25) on one side.

2. The livestock feed screening device according to claim 1, characterized in that, The crushing roller (25) includes a rotating tube (251), a gear (252), a drive pulley (253), a diverter tube (254), a crushing cylinder (255), and crushing teeth (256). The rotating tube (251) is mounted between the upper inner walls of both sides of the feed screening box (1) via bearings. The gear (252) is mounted on one side of the outer surface of the rotating tube (251). The drive pulley (253) is inserted and mounted at one end of the rotating tube (251). Multiple diverter tubes (254) and crushing teeth (256) are provided. Multiple diverter tubes (254) are provided on the outer surface of the rotating tube (251). The crushing cylinder (255) is installed in the middle of the outer surface of the rotating tube (251). Multiple crushing teeth (256) are installed on the outer surface of the crushing cylinder (255).

3. The livestock feed screening device according to claim 1, characterized in that, The vibration mechanism (3) includes a rotating shaft (31), a vibrating rod (32), a universal joint (33), and a driven pulley (34). The rotating shaft (31) is mounted between the lower inner walls of both sides of the feed screening box (1) via bearings. Multiple vibrating rods (32) are provided, and all multiple vibrating rods (32) are mounted on the outer surface of the rotating shaft (31). The universal joint (33) is mounted on one end of the rotating shaft (31), and the driven pulley (34) is mounted on the other end of the universal joint (33).

4. The livestock feed screening device according to claim 3, characterized in that, The vibrating rod (32) includes a storage tube (321), a telescopic rod (322), a vibrating head (323), a limiting block (324), and a spring (325). The storage tube (321) is inserted and installed on the outer wall of the rotating shaft (31). The telescopic rod (322) is movably inserted into the top of the storage tube (321). The vibrating head (323) is installed at the top of the telescopic rod (322). The limiting block (324) is installed at the bottom of the telescopic rod (322). The spring (325) is installed at the bottom of the limiting block (324), and the bottom of the spring (325) is installed on the bottom inner wall of the storage tube (321).

5. The livestock feed screening device according to claim 1, characterized in that, The dust collection mechanism (4) includes a dust collector (41), a dust collection pipe (42), a dust collection hood (43), and a support frame (44). The dust collection pipe (42) is installed on the upper part of the outer wall of the dust collector (41), the dust collection hood (43) is installed at the bottom end of the dust collection pipe (42), and the support frame (44) is installed on the lower part of the outer wall of the dust collector (41). The outer wall of the support frame (44) is installed on the outer wall of the feed screening box (1).

6. The livestock feed screening device according to claim 1, characterized in that, A feed hopper (6) is installed at the top center of the feed screening box (1). A control panel (7) is installed on the upper part of the outer wall of the other side of the feed screening box (1). A protective cover (8) is installed at one end of the feed screening box (1). A discharge frame (9) is inserted at the lower part of both ends of the feed screening box (1). A guide plate (10) is installed between the lower parts of the inner walls on both sides of the feed screening box (1). The guide plate (10) is located below the screening screen (5). The two crushing rollers (25) are connected to the two vibration mechanisms (3) by a drive belt (11) through a pulley.

7. A livestock feed screening device according to claim 2, characterized in that, The end of the diversion pipe (254) away from the rotating pipe (251) is flush with the outer surface of the crushing cylinder (255), the gears (252) on the two crushing rollers (25) mesh with each other, and the air supply pipe (24) is configured as a Y-shaped structure.

8. A livestock feed screening device according to claim 4, characterized in that, The vibrating head (323) is made of rubber and contacts the screen surface of the screen (5). The tilt angle of the rotating shaft (31) is consistent with the tilt angle of the screen (5). Multiple vibrating rods (32) are spirally distributed on the outer surface of the rotating shaft (31).

9. A livestock feed screening device according to claim 5, characterized in that, The dust collector (41) is configured as a pulse bag dust collector, and the dust collection hood (43) is located directly above the feed hopper (6).

10. A livestock feed screening device according to claim 6, characterized in that, The control panel (7) is electrically connected to the crushing mechanism (2) and the dust collection mechanism (4). The transmission belt (11) is located inside the protective cover (8). The screening screen (5) is installed at an angle to the right, and the guide plate (10) is installed at an angle to the left.

Images