A granulator for feed processing

Abstract

This invention discloses a pellet mill for feed processing, relating to the technical field of pellet mills for feed processing. The pellet mill includes a base, a feed cylinder fixed above the base, a hopper fixed above the feed cylinder, a crossbeam fixed above the hopper, a cover plate fixed above the hopper, an inlet pipe fixed to a slot above the cover plate, a motor fixed above the base, and an output rod fixed to the output end of the motor. The pellet mill is equipped with a stirring device. A rotating rod drives a rotating sleeve, causing the rotating sleeve to rotate. When the sliding block and the fixed block are close together, the rotating sleeve, carrying the stirring blades, moves downwards. When the sliding block and the fixed block are far apart, the sleeve, carrying the stirring blades, moves upwards under the action of a supporting spring. This causes the stirring blades to move up and down and rotate within the hopper, resulting in more thorough mixing of the material in the hopper. This prevents the material from easily crumbling during pelleting, ensuring more uniform nutrition in each feed pellet.

Description

Technical Field

[0001] This invention relates to the field of pellet mill technology for feed processing, specifically to a pellet mill for feed processing. Background Technology

[0002] Animal husbandry is a production sector that utilizes the physiological functions of domesticated animals such as livestock and poultry, or wild animals such as deer, musk deer, foxes, minks, otters, and quails, through artificial breeding and raising to convert plant energy such as pasture and feed into animal energy, in order to obtain livestock products such as meat, eggs, milk, wool, cashmere, hides, silk, and medicinal materials.

[0003] Patent publication number CN209519730U describes a pellet mill for animal feed processing, comprising a lower connecting body and a metal base. The lower connecting body is fixedly mounted on the upper right side of the metal base. A soil scraper, composed of welded short blocks, an arc-shaped scraper, and arc-shaped rubber, effectively removes soil from the moving rollers. The welded short blocks are securely attached to the metal base, preventing loosening during soil scraping. The wavy shape formed by the arc-shaped scraper and arc-shaped rubber causes the scraped soil to move upwards, falling off after reaching a certain height. A rubber elastic element, consisting of a rubber triangular block, an internal groove, and a small spring, provides excellent protection. Upon impact, the rubber triangular block indents inward, deforming the small spring in the internal groove, thus minimizing the risk of skin injury to the user.

[0004] The aforementioned feed pellet mill directly feeds the material into the hopper and extrudes it into pellets, resulting in uneven mixing of the material. Due to varying humidity levels during extrusion, the pellets tend to be loose and difficult to form, which is not conducive to subsequent storage and transportation. Furthermore, feed pellets extruded under uneven material mixing conditions have unbalanced nutrition. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a pellet mill for feed processing, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pellet mill for feed processing, comprising a base, a material cylinder fixed above the base, a hopper fixed above the material cylinder, a crossbeam fixed above the hopper, a cover plate fixed above the hopper, an inlet pipe fixed in the groove above the cover plate, a motor fixed above the base, an output rod fixed at the output end of the motor, a bevel gear one fixed at the end of the output rod, a bevel gear two meshing with the bevel gear one, a rotating rod fixed on the bevel gear two, an auger fixed on the rotating rod, a stirring device for fully mixing the material provided at the end of the rotating rod, a pushing device provided inside the hopper, and an alarm device provided on the pushing device; The stirring device includes a rotating sleeve, stirring blades, a sliding block, a fixed block, a limiting rod, a limiting groove, a supporting spring, a protective sleeve, a piston rod, an air chamber, and an air hole. The rotating sleeve is fixed to the end point of the rotating rod, the stirring blades are fixed to the outer wall of the rotating sleeve, the sliding block is fixed above the rotating sleeve, and the fixed block is fixed below the crossbeam.

[0007] According to the above technical solution, the limiting rod is fixed on the rotating rod, the limiting groove is opened on the inner wall of the rotating sleeve, the limiting rod slides on the inner wall of the limiting groove, a support spring is fixed below the rotating sleeve, the end point of the support spring is fixed above the sleeve of the auger, the support spring slides on the rotating rod, the inner wall of the protective sleeve is fixed to the outer wall of the sleeve of the auger, and the outer wall of the rotating sleeve slides on the inner wall of the protective sleeve.

[0008] According to the above technical solution, the piston rod is fixed below the crossbeam, and the end point of the piston rod slides on the inner wall of the rotating sleeve. The air chamber is opened on the stirring blade, and the air hole is opened on the outer wall of the stirring blade. When the motor starts, it drives the output rod to rotate. The rotation of the output rod drives the first bevel gear to rotate, and the rotation of the first bevel gear drives the second bevel gear to rotate, causing the second bevel gear to rotate and drive the rotating rod to rotate. The rotation of the rotating rod drives the limiting rod to rotate, and the rotation of the limiting rod drives the rotating sleeve to rotate. The rotation of the rotating sleeve drives the stirring blade to rotate, and the rotation of the rotating sleeve drives the sliding block to rotate. When the sliding block approaches the fixed block, the fixed block... The fixed block presses against the sliding block, causing the rotating sleeve to move downwards along with the stirring blade. The downward movement of the rotating sleeve presses against the support spring. When the sliding block moves away from the fixed block, the rotating sleeve, along with the stirring blade, moves upwards and resets under the elastic force of the support spring. This causes the rotating sleeve to rotate while moving up and down. During the up-and-down movement of the rotating sleeve, the limiting rod slides up and down within the limiting groove. When the rotating sleeve moves downwards, the piston rod applies negative pressure to the air chamber, causing air to be drawn into the air chamber through the air hole. When the rotating sleeve resets upwards, the piston rod applies pressure to the gas in the air chamber, causing the gas in the air chamber to flow out through the air hole.

[0009] According to the above technical solution, the pushing device includes a sliding plate, a sliding spring, a pressing rod, a pushing plate, a rotating rod, a rotating plate, a limiting spring, a fixed seat, a pry bar, a hammer, and a tension spring. The sliding plate slides in the groove of the crossbeam, and a sliding spring is fixed on the sliding plate. The end point of the sliding spring is fixed in the groove of the crossbeam, and the sliding spring slides in the groove of the crossbeam.

[0010] According to the above technical solution, a pressing rod is fixed below the sliding plate, a push plate is fixed below the sliding plate, a rotating rod is fixed on the push plate, a rotating plate rotates on the rotating rod, a limit spring is fixed on the rotating plate, and the end of the limit spring is fixed on the push plate.

[0011] According to the above technical solution, the fixed seat is fixed to the inner wall of the hopper, and a pry bar is hinged to the fixed seat. A striking hammer is fixed to the end of the pry bar, and a tension spring is fixed to the pry bar. The end of the tension spring is fixed to the inner wall of the hopper. When the stirring blade rotates and squeezes the extrusion rod, the extrusion rod, along with the sliding plate and rotating rod, moves closer to the inner wall of the hopper, allowing the material to slide from the side of the push plate closest to the inner wall of the hopper to the center of the hopper. When the stirring blade rotates away from the extrusion rod, the extrusion rod, along with the sliding plate and rotating rod, moves closer to the inner wall of the hopper, allowing the material to slide from the side of the push plate closest to the inner wall of the hopper to the center of the hopper. The limiting spring and push plate are moved away from the inner wall of the hopper, allowing the material near the rotating plate to be pushed to the center of the hopper, so that the material is evenly mixed. When enough material is added to the hopper, the rotating plate rotates to prevent the push plate from jamming due to excessive load. When the sliding plate slides towards the inner wall of the hopper, the sliding plate squeezes the pry bar, causing the pry bar to rotate on the fixed seat. The pry bar stretches the tension spring, and the rotation of the pry bar causes the hammer to move away from the inner wall of the hopper. When the sliding plate moves away from the inner wall of the hopper, the pry bar returns to its original position under the action of the tension spring. The return of the pry bar also causes the hammer to return to its original position, so that the hammer strikes the inner wall of the hopper.

[0012] According to the above technical solution, the alarm device includes a squeezing block, a sliding rod, a pressure spring, a sliding seat, a support plate, a T-shaped rod, a squeezing plate, a control module, a pressure sensor, an alarm, a T-shaped rod, a cross rod, a semi-circular plate, and a transmission spring. The squeezing block is fixed on the rotating plate, the sliding seat slides on the groove of the cover plate, the sliding rod passes through and slides on the sliding seat, one end of the pressure spring is fixed above the sliding seat, and the other end of the pressure spring is fixed below the top of the sliding rod.

[0013] According to the above technical solution, the support plate is fixed above the cover plate, the T-shaped rod slides in the groove on the support plate, the end of the T-shaped rod is fixed with an extrusion plate, the control module is fixed below the support plate, the pressure sensor is fixed below the control module, the alarm is fixed above the support plate, the T-shaped rod slides on the groove on the cover plate, the end of the T-shaped rod is fixed with a semi-circular plate, the top of the semi-circular plate is fixed with a cross rod, the cross rod slides on the groove on the cover plate, the cross rod slides in the groove on the extrusion plate, two sets of semi-circular plates are provided, the two sets of semi-circular plates are symmetrically arranged with the center line in the vertical direction of the hopper as the axis of symmetry, and transmission springs are fixed on the two sets of semi-circular plates. When sufficient material is added to the hopper, the rotating plate rotates, causing the extrusion block to rotate as well. This causes the sliding rod attached to the extrusion block to move upward under pressure. The upward movement of the sliding rod presses against the extrusion plate, causing the extrusion plate to move up and down. The upward movement of the extrusion plate presses against the pressure sensor, triggering the alarm in the control module. When the extrusion plate moves upward, the cross bar is released from its limit position, allowing the two sets of semicircular plates to move closer together under the action of the transmission spring, blocking the feed pipe. When the material in the hopper is no longer sufficient, the rotating plate and the extrusion block reset, causing the sliding rod to reset under the action of the pressure spring, and the extrusion plate to reset under the action of gravity. The reset extrusion plate no longer presses against the pressure sensor, causing the alarm in the control module to turn off. When it is necessary to continue adding material to the hopper, the two sets of cross bars are manually pulled away from each other, raising the extrusion plate limit cross bar so that the two sets of semicircular plates no longer block the feed pipe.

[0014] This invention provides a pellet mill for feed processing. It has the following beneficial effects: 1. This invention is equipped with a stirring device. The rotating rod drives the rotating sleeve to rotate. When the sliding block and the fixed block are close together, the rotating sleeve moves downward with the stirring blades. When the sliding block and the fixed block are far apart, the sleeve moves upward with the stirring blades under the action of the supporting spring. This causes the stirring blades to move up and down and rotate in the hopper, making the material in the hopper more thoroughly mixed. When the material is extruded into pellets, it is less likely to fall apart, and each feed pellet is more nutritionally uniform. In addition, when the stirring sleeve moves up and down, the piston rod inflates the air chamber, allowing the gas in the air chamber to flow out from the air hole. This blows off the material adhering to the stirring blades, solving the problem that a large amount of material adhering to the stirring blades would hinder the full contact between the stirring blades and the remaining material, resulting in uneven mixing.

[0015] 2. This invention is equipped with a pushing device. During the rotation of the stirring blade, the stirring blade squeezes the squeezing rod, causing the two sets of sliding plates to move away from each other. When the stirring blade moves away from the squeezing rod, the two sets of pushing plates return to their original position under the action of the sliding spring, pushing the material in the hopper from the edge to the center, ensuring full contact between the material and the stirring blade, making the mixture more uniform and solving the problem of material not being able to be stirred at the edge of the hopper. At the same time, the two sets of sliding plates squeeze the pry bar when they move away from each other, and return to their original position under the action of the tension spring when they move closer together, causing the hammer to strike the hopper, causing the material adhering to the inner wall of the hopper to fall to the bottom of the hopper, solving the problem of material adhering to the inner wall of the hopper and being difficult to fall and mix, thus improving the mixing efficiency.

[0016] 3. This invention is equipped with an alarm device. When enough material is added to the hopper, as the push plate moves closer to the center of the hopper, it causes the rotating plate to squeeze the full material. The rotating plate rotates under the squeezing force, and the squeezing block squeezes the sliding rod, causing the squeezing plate to move upward and squeeze the pressure sensor. The control module controls the alarm to sound, reminding the staff that enough material has been added. At the same time as the squeezing plate moves upward, the cross rod is released from its limit position, and the two sets of semicircular plates move closer to each other under the action of the transmission spring, blocking the feed pipe and preventing any more material from being added to the hopper. This solves the problem of clogging in the hopper caused by the staff continuously adding material. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a partial structural diagram of the present invention; Figure 5 This is a partial cross-sectional structural diagram of the present invention; Figure 6 This is a schematic cross-sectional view of part of the structure of the present invention; Figure 7 This is a partial structural diagram of the feeding device and alarm device of the present invention; Figure 8 This is a schematic diagram of the feeding device of the present invention.

[0018] In the diagram: 1. Base; 2. Material cylinder; 3. Hopper; 4. Crossbeam; 5. Cover plate; 6. Feed pipe; 7. Motor; 8. Output rod; 9. Bevel gear one; 10. Bevel gear two; 11. Rotating rod; 12. Screwdriver; 13. Mixing device; 14. Pushing device; 15. Alarm device; 1301. Rotating sleeve; 1302. Mixing blade; 1303. Sliding block; 1304. Fixing block; 1305. Limiting rod; 1306. Limiting groove; 1307. Support spring; 1308. Protective sleeve; 1309. Piston rod; 1310. Air chamber; 1311. Air hole; 1401. Sliding plate; 1402. Sliding spring 1403. Spring; 1404. Extrusion rod; 1405. Push plate; 1406. Rotating rod; 1407. Rotating plate; 1408. Limiting spring; 1409. Fixed seat; 1400. Pry bar; 1410. Striking hammer; 1411. Tension spring; 1501. Extrusion block; 1502. Sliding rod; 1503. Pressure spring; 1504. Sliding seat; 1505. Support plate; 1506. T-shaped rod; 1507. Extrusion plate; 1508. Control module; 1509. Pressure sensor; 1510. Alarm; 1511. T-shaped rod; 1512. Cross rod; 1513. Semicircular plate; 1514. Transmission spring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-8One embodiment of the present invention is as follows: a pellet mill for feed processing includes a base 1, a feed cylinder 2 fixed above the base 1, a discharge port disc fixed on the feed cylinder 2, a winch fixed on the feed cylinder 2, a hopper 3 fixed above the feed cylinder 2, a crossbeam 4 fixed above the hopper 3, a cover plate 5 fixed above the hopper 3, an inlet pipe 6 fixed in a slot above the cover plate 5, a motor 7 fixed above the base 1, an output rod 8 fixed at the output end of the motor 7, a bevel gear 9 fixed at the end of the output rod 8, a bevel gear 10 meshing with the bevel gear 9, a rotating rod 11 fixed on the bevel gear 10, the rotating rod 11 penetrating the bottom of the feed cylinder 2 and rotatably connected at the penetration point, the rotating rod 11 rotating within a slot on the base 1, the rotating rod 11 rotating within a slot on the feed cylinder 2, and a cutting device fixed on the rotating rod 11. The blade and rotating rod 11 rotate on the winch. Rollers are fixed on the rotating rod 11, and an auger 12 is fixed on the rotating rod 11. The end of the rotating rod 11 is equipped with a stirring device 13 to fully mix the material. The motor 7 starts and drives the output rod 8 to rotate. The output rod 8 rotates and drives the first bevel gear 9 to rotate. The first bevel gear 9 rotates and drives the second bevel gear 10 to rotate, which in turn drives the rotating rod 11 to rotate. The material enters the hopper 3 from the feed pipe 6. The stirring device 13 stirs the material. The pushing device 14 pushes the material from the edge of the hopper 3 to the center of the hopper 3. The auger 12 rotates and carries the material from the hopper 3 into the material cylinder 2. The material falls onto the winch and is squeezed by the rollers, so that the material forms lines from the holes in the winch. The cutting blade cuts the lines and makes them into particles that fall to the discharge port plate. The particles slide out of the discharge port plate.The stirring device 13 includes a rotating sleeve 1301, a stirring blade 1302, a sliding block 1303, a fixed block 1304, a limiting rod 1305, a limiting groove 1306, a support spring 1307, a protective sleeve 1308, a piston rod 1309, an air chamber 1310, and an air hole 1311. The rotating sleeve 1301 is fixed to the end point of the rotating rod 11, the stirring blade 1302 is fixed to the outer wall of the rotating sleeve 1301, and a sliding block 1309 is fixed above the rotating sleeve 1301. 303, the fixing block 1304 is fixed below the crossbeam 4, the limiting rod 1305 is fixed on the rotating rod 11, the limiting groove 1306 is opened on the inner wall of the rotating sleeve 1301, the limiting rod 1305 slides on the inner wall of the limiting groove 1306, a support spring 1307 is fixed below the rotating sleeve 1301, the end of the support spring 1307 is fixed above the sleeve of the auger 12, the support spring 1307 slides on the rotating rod 11, and the inner wall of the protective sleeve 1308 is fixed to the auger The outer wall of the sleeve 12, the outer wall of the rotating sleeve 1301 slides on the inner wall of the protective sleeve 1308, the piston rod 1309 is fixed below the crossbeam 4, the end point of the piston rod 1309 slides on the inner wall of the rotating sleeve 1301, the air chamber 1310 is opened on the rotating sleeve 1301, the air chamber 1310 is opened on the stirring blade 1302, the air hole 1311 is opened on the outer wall of the stirring blade 1302, the rotating sleeve 1301 is driven by the rotation of the rotating rod 11, so that the rotating sleeve 1308... 1. Rotation: When the sliding block 1303 and the fixed block 1304 approach each other, the rotating sleeve 1301, carrying the stirring blade 1302, moves downward. When the sliding block 1303 and the fixed block 1304 move away from each other, under the action of the support spring 1307, the rotating sleeve 1301, carrying the stirring blade 1302, moves upward. This causes the stirring blade 1302 to move up and down and rotate within the hopper 3, resulting in more thorough mixing of the material in the hopper 3. This makes the material less prone to crumbling during pelleting, and ensures that each feed pellet has more uniform nutrition.

[0021] When the rotating sleeve 1301 moves up and down, the piston rod 1309 fills the air chamber 1310 with air, allowing the gas in the air chamber 1310 to flow out from the air hole 1311, causing the material adhering to the stirring blade 1302 to be blown off by the gas. This solves the problem that a large amount of material is attached to the stirring blade 1302, which would hinder the stirring blade 1302 from making full contact with the remaining material, resulting in uneven mixing of the material.

[0022] Working principle: When granulation is required, material is added through the feed pipe 6. The motor 7 starts and drives the output rod 8 to rotate. The rotation of the output rod 8 drives the first bevel gear 9 to rotate. The rotation of the first bevel gear 9 drives the second bevel gear 10, which in turn drives the rotating rod 11 to rotate. The rotation of the rotating rod 11 drives the limiting rod 1305 to rotate. The rotation of the limiting rod 1305 drives the rotating sleeve 1301 to rotate. The rotation of the rotating sleeve 1301 drives the stirring blade 1302 to rotate. The rotation of the rotating sleeve 1301 drives the sliding block 1303 to rotate. When the sliding block 1303 approaches the fixed block 1304, the fixed block 1304 presses the sliding block 1303, causing the rotating sleeve 1301 to move downward with the stirring blade 1302. The downward movement of the rotating sleeve 1301 presses the support spring 1307. When the rotating sleeve 1301 moves away from the fixed block 1304, under the elastic force of the support spring 1307, the rotating sleeve 1301 moves upward and resets with the stirring blade 1302. This causes the rotating sleeve 1301 to rotate while moving up and down, which in turn causes the stirring blade 1302 to move up and down to mix the material. When the rotating sleeve 1301 moves up and down, the limiting rod 1305 slides up and down in the limiting groove 1306. When the rotating sleeve 1301 moves downward, the piston rod 1309 applies negative pressure to the air chamber 1310, causing air to be drawn into the air chamber 1310 from the air hole 1311. When the rotating sleeve 1301 resets upward, the piston rod 1309 applies gas pressure to the air chamber 1310, causing the gas in the air chamber 1310 to flow out from the air hole 1311, blowing off the material attached to the stirring blade 1302.

[0023] Please see Figures 1-8Based on the above embodiments, in another embodiment of the present invention, the hopper 3 is provided with a pushing device 14, and the pushing device 14 is provided with an alarm device 15. The pushing device 14 includes a sliding plate 1401, a sliding spring 1402, a pressing rod 1403, a pushing plate 1404, a rotating rod 1405, a rotating plate 1406, a limiting spring 1407, a fixed seat 1408, a pry bar 1409, a hammer 1410, and a tension spring 1411. The sliding plate 1401 slides in the groove of the crossbeam 4, and the sliding plate 1401 is fixed with a fixed plate 1401. A sliding spring 1402 is provided, with its end point fixed in the slot of the crossbeam 4. A pressing rod 1403 is fixed below the sliding plate 1401, and a push plate 1404 is fixed below the sliding plate 1401. A rotating rod 1405 is fixed on the push plate 1404, and a rotating plate 1406 rotates on the rotating rod 1405. A limit spring 1407 is fixed on the rotating plate 1406, with its end point fixed to the push plate 1404. A fixed seat 1408 is fixed to the inner wall of the hopper 3. A pry bar 1409 is hinged, with a hammer 1410 fixed to the end of the pry bar 1409. A tension spring 1411 is fixed to the pry bar 1409, with the end of the tension spring 1411 fixed to the inner wall of the hopper 3. During the rotation of the stirring blade 1302, the blades of the stirring blade 1302 press against the pressing rod 1403, causing the two sets of sliding plates 1401 and the two sets of push plates 1404 to move away from each other. When the blades of the stirring blade 1302 move away from the pressing rod 1403, the two sets of push plates 1404 are reset under the action of the sliding spring 1402, so that the hopper... The material in hopper 3 is pushed from the edge to the center, making the mixture in the mixing device 13 more uniform. When enough material is added to hopper 3, the rotating plate 1406 rotates to prevent the push plate 1404 from getting stuck due to excessive load. At the same time, when the two sets of sliding plates 1401 move away from each other, they press the pry bar 1409. When the two sets of sliding plates 1401 move closer to each other, they reset under the action of the tension spring 1411, causing the hammer 1410 to strike hopper 3, causing the material adhering to the inner wall of hopper 3 to fall to the bottom of hopper 3, making the material in hopper 3 more uniformly mixed.

[0024] The alarm device 15 includes a pressing block 1501, a sliding rod 1502, a pressure spring 1503, a sliding seat 1504, a support plate 1505, a T-shaped rod 1506, a pressing plate 1507, a control module 1508, a pressure sensor 1509, an alarm 1510, a T-shaped rod 1511, a cross rod 1512, a semi-circular plate 1513, and a transmission spring 1514. The pressing block 1501 is fixed on the rotating plate 1406, the sliding seat 1504 slides on the groove of the cover plate 5, and the sliding rod 1502 passes through and slides on the groove. On the movable seat 1504, one end of the pressure spring 1503 is fixed above the sliding seat 1504, and the other end of the pressure spring 1503 is fixed below the top of the sliding rod 1502. The support plate 1505 is fixed above the cover plate 5. The T-shaped rod 1506 slides in the slot on the support plate 1505. The end of the T-shaped rod 1506 is fixed with a pressing plate 1507. The control module 1508 is fixed below the support plate 1505, and the pressure sensor 1509 is fixed below the control module 1508. The control module 1508 and... Pressure sensors 1509 are electrically connected. An alarm 1510 is fixed above the support plate 1505. The control module 1508 is electrically connected to the alarm 1510. A T-shaped rod 1511 slides on a slot in the cover plate 5. A semi-circular plate 1513 is fixed to the end of the T-shaped rod 1511. A cross rod 1512 is fixed above the semi-circular plate 1513. The cross rod 1512 slides on a slot in the cover plate 5 and slides in a slot in the extrusion plate 1507. Two sets of semi-circular plates 1513 are provided. The semicircular plates 1513 are symmetrical about the center of the hopper 3. The two semicircular plates 1513 are fixed with transmission springs 1514. When enough material is added to the hopper 3, the rotating plate 1406 rotates and drives the extrusion block 1501 to extrude the sliding rod 1502, causing the extrusion plate 1507 to move upward and extrude the pressure sensor 1509. When the pressure sensor 1509 is subjected to extrusion force, it sends an electrical signal and transmits the signal to the control module 1508. The control module 1508 controls the alarm 1510 to sound an alarm and remind the staff that enough material has been added. As the extrusion plate 1507 moves upward, the cross rod 1512 is released from its limit. Under the action of the transmission spring 1514, the two sets of semicircular plates 1513 move closer to each other and block the feed pipe 6, so that no more material is added to the hopper 3, avoiding overload of the mixing device 13 in the hopper 3, slowing down the aging of the mixing device 13, reducing costs and increasing efficiency.

[0025] In this embodiment, during operation: when the stirring blade 1302 rotates and compresses the extrusion rod 1403, the extrusion rod 1403, along with the sliding plate 1401, rotating rod 1405, rotating plate 1406, limiting spring 1407, and push plate 1404, approaches the inner wall of the hopper 3. When the stirring blade 1302 rotates away from the extrusion rod 1403, the extrusion rod 1403, along with the sliding plate 1401, rotating rod 1405, rotating plate 1406, limiting spring 1407, and push plate 1404, moves away from the inner wall of the hopper 3, thereby causing the push plate 1404 to move back and forth within the hopper 3, pushing the material to the stirring blade 1302 and ensuring uniform mixing of the material. When enough material is added to hopper 3, rotating plate 1406 rotates to prevent push plate 1404 from jamming due to excessive load. When sliding plate 1401 slides towards the center of hopper 3, sliding plate 1401 presses pry bar 1409, causing pry bar 1409 to rotate on fixed seat 1408. Pry bar 1409 stretches tension spring 1411. The rotation of pry bar 1409 causes hammer 1410 to move away from the inner wall of hopper 3. When sliding plate 1401 moves away from the center of hopper 3, pry bar 1409 resets under the action of tension spring 1411. The reset of pry bar 1409 also resets hammer 1410, causing hammer 1410 to strike the inner wall of hopper 3.

[0026] When sufficient material is added to hopper 3, the rotating plate 1406 rotates, causing the extrusion block 1501 to rotate as well. This causes the sliding rod 1502, which is attached to the extrusion block 1501, to be displaced upwards. The upward displacement of the sliding rod 1502 presses against the extrusion plate 1507, causing the extrusion plate 1507 to move up and down. The upward displacement of the extrusion plate 1507 presses against the pressure sensor 1509, causing the control module 1508 to control the alarm 1510 to sound an alarm. When the extrusion plate 1507 moves upwards, the cross rod 1512 is released from its limit, allowing the two sets of semicircular plates 1513 to move closer together under the action of the transmission spring 1514, blocking the feed pipe 6. When the material in hopper 3 is no longer sufficient, the rotating plate 1406, along with the extrusion block 1501, resets, causing the sliding rod 1502 to reset under the action of the pressure spring 1503. The extrusion plate 1507 resets under the action of gravity. Once the extrusion plate 1507 is reset, it no longer extrudes the pressure sensor 1509. The pressure sensor 1509 stops sending electrical signals to the control module 1508, causing the control module 1508 to turn off the alarm 1510. When it is necessary to continue adding material to the hopper 3, the two sets of cross rods 1512 are manually pulled away from each other, and the extrusion plate 1507 is raised to limit the cross rods 1512, so that the two sets of semicircular plates 1513 no longer cover the feed pipe 6.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pellet mill for feed processing, comprising a base (1), characterized in that: A material cylinder (2) is fixed above the base (1), a hopper (3) is fixed above the material cylinder (2), a crossbeam (4) is fixed above the hopper (3), a cover plate (5) is fixed above the hopper (3), an inlet pipe (6) is fixed to the slot above the cover plate (5), a motor (7) is fixed above the base (1), an output rod (8) is fixed to the output end of the motor (7), and a bevel gear (9) is fixed to the end of the output rod (8). A bevel gear 2 (10) meshes with the first bevel gear (9), and a rotating rod (11) is fixed on the second bevel gear (10). The rotating rod (11) passes through the bottom of the material cylinder (2) and is rotatably connected at the point of penetration. An auger (12) is fixed on the rotating rod (11). A stirring device (13) for fully mixing the material is provided at the end of the rotating rod (11). A pushing device (14) is provided in the hopper (3), and an alarm device (15) is provided on the pushing device (14). The stirring device (13) includes a rotating sleeve (1301), a stirring blade (1302), a sliding block (1303), a fixed block (1304), a limiting rod (1305), a limiting groove (1306), a support spring (1307), a protective sleeve (1308), a piston rod (1309), an air chamber (1310), and an air hole (1311). The rotating sleeve (1301) is fixed at the end of the rotating rod (11), the stirring blade (1302) is fixed on the outer wall of the rotating sleeve (1301), the sliding block (1303) is fixed above the rotating sleeve (1301), and the fixed block (1304) is fixed below the crossbeam (4).

2. The pellet mill for feed processing according to claim 1, characterized in that: The limiting rod (1305) is fixed on the rotating rod (11), the limiting groove (1306) is opened on the inner wall of the rotating sleeve (1301), the limiting rod (1305) slides on the inner wall of the limiting groove (1306), a support spring (1307) is fixed below the rotating sleeve (1301), the end of the support spring (1307) is fixed above the sleeve of the auger (12), the support spring (1307) slides on the rotating rod (11), the inner wall of the protective sleeve (1308) is fixed on the outer wall of the sleeve of the auger (12), and the outer wall of the rotating sleeve (1301) slides on the inner wall of the protective sleeve (1308).

3. A pellet mill for feed processing according to claim 2, characterized in that: The piston rod (1309) is fixed below the crossbeam (4), and the end of the piston rod (1309) slides on the inner wall of the rotating sleeve (1301). The air chamber (1310) is opened on the stirring blade (1302), and the air hole (1311) is opened on the outer wall of the stirring blade (1302).

4. A pellet mill for feed processing according to claim 1, characterized in that: The feeding device (14) includes a sliding plate (1401), a sliding spring (1402), a pressing rod (1403), a push plate (1404), a rotating rod (1405), a rotating plate (1406), a limiting spring (1407), a fixed seat (1408), a pry bar (1409), a hammer (1410), and a tension spring (1411). The sliding plate (1401) slides in the groove of the crossbeam (4), and the sliding spring (1402) is fixed on the sliding plate (1401). The end of the sliding spring (1402) is fixed in the groove of the crossbeam (4).

5. A pellet mill for feed processing according to claim 4, characterized in that: A pressing rod (1403) is fixed below the sliding plate (1401), a push plate (1404) is fixed below the sliding plate (1401), a rotating rod (1405) is fixed on the push plate (1404), a rotating plate (1406) rotates on the rotating rod (1405), a limit spring (1407) is fixed on the rotating plate (1406), and the end of the limit spring (1407) is fixed on the push plate (1404).

6. A pellet mill for feed processing according to claim 4, characterized in that: The fixed seat (1408) is fixed on the inner wall of the hopper (3). A pry bar (1409) is hinged on the fixed seat (1408). A hammer (1410) is fixed to the end of the pry bar (1409). A tension spring (1411) is fixed on the pry bar (1409). The end of the tension spring (1411) is fixed on the inner wall of the hopper (3).

7. A pellet mill for feed processing according to claim 1, characterized in that: The alarm device (15) includes a pressing block (1501), a sliding rod (1502), a pressure spring (1503), a sliding seat (1504), a support plate (1505), a T-shaped rod (1506), a pressing plate (1507), a control module (1508), a pressure sensor (1509), an alarm (1510), a T-shaped rod (1511), a cross rod (1512), a semi-circular plate (1513), and a transmission spring (1514). The pressing block (1501) is fixed on the rotating plate (1406). The sliding seat (1504) slides on the groove of the cover plate (5). The sliding rod (1502) passes through and slides on the sliding seat (1504). One end of the pressure spring (1503) is fixed above the sliding seat (1504), and the other end of the pressure spring (1503) is fixed below the top of the sliding rod (1502).

8. A pellet mill for feed processing according to claim 7, characterized in that: The support plate (1505) is fixed above the cover plate (5). The T-shaped rod (1506) slides in the slot on the support plate (1505). The end of the T-shaped rod (1506) is fixed with a pressing plate (1507). A control module (1508) is fixed below the support plate (1505). A pressure sensor (1509) is fixed below the control module (1508). An alarm (1510) is fixed above the support plate (1505). The T-shaped rod (1511) slides in the slot on the cover plate (5). Above, a semicircular plate (1513) is fixed at the end of the T-shaped rod (1511), and a cross rod (1512) is fixed above the semicircular plate (1513). The cross rod (1512) slides on the groove on the cover plate (5) and slides in the groove on the extrusion plate (1507). There are two sets of semicircular plates (1513), and the two sets of semicircular plates (1513) are symmetrically arranged with the center point of the hopper (3) as the axis of symmetry. A transmission spring (1514) is fixed on the two sets of semicircular plates (1513).

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