Feed thermosensitive component gradient shearing type multi-stage mixing device and method

Abstract

The invention relates to a gradient shearing type multi-stage mixing device and method for thermosensitive components of feed, and relates to the technical field of mixing devices.The gradient shearing type multi-stage mixing device comprises a mixing tank for mixing the feed, a feeding barrel is installed on the upper side of the mixing tank, and a shearing mechanism for shearing the falling feed and a distributing mechanism for changing the feed entering mode are further arranged; the feed returning mechanism not only can filter the feed to prevent the finished feed from containing large feed to influence the quality of the finished feed, but also can directly return the large feed to carry out secondary shearing to avoid the waste of the large feed, and through the feed distributing mechanism, firstly, the feed vertically falls from a lower opening to be stacked below the feed distributing mechanism; after the feed reaches the set height, the lower opening is closed, the disc rotates, the feed is thrown out of the opening through centrifugal force and falls to the surrounding area of an original pile in a parabola mode, the feed can reach the position, away from the inlet, in the mixing tank, the large-volume characteristic of the mixing tank is fully utilized, and mixing of more feed at a time is achieved.

Description

Technical Field

[0001] This application relates to the field of mixing equipment technology, and in particular to a multi-stage mixing device and method for gradient shearing of feed heat-sensitive components. Background Technology

[0002] Feed mixing equipment is a mechanical device used to mix various feeds in a uniform proportion. It is widely used in feed processing, animal husbandry and food industry.

[0003] Patent CN212999685U discloses a high-efficiency double-layer single-shaft paddle-type feed conditioner. This prior art uses the cooperation of shafts and vibrating cams. The four shafts revolve around the central axis and rotate on their own axis to mix the feed, which can fully and efficiently mix the mixed feed. The vibrating cam can move the mixing chamber left and right to generate vibration, so that the raw materials at the edges are shaken to the middle of the mixing chamber and fully mixed. The cooperation of the vibrating cam shaft and the discharge hopper means that after the feed in the mixing chamber is mixed, the valve of the discharge hopper is opened. The vibrating cam will cause the entire mixing chamber to vibrate, shaking out all the mixed feed, and the discharge hopper will not be blocked.

[0004] However, the aforementioned existing technologies have the following technical defects: 1. The existing technology involves directly feeding feed into the mixing chamber through the inlet. However, the mixing chamber is horizontally positioned, and the fed feed accumulates below the inlet. When the accumulation is too high, it blocks the inlet, preventing feed from entering. At this time, there is less feed in the mixing chamber far from the inlet, resulting in uneven feed distribution in different parts of the chamber before mixing. In addition, too little feed is fed in, causing waste in the mixing chamber cavity.

[0005] Second, in order to improve the quality of mixed feed, each feed needs to be cut into the same size. Therefore, existing cutting equipment can be installed at the inlet to cut the feed. However, although ordinary cutting equipment can cut most of the feed into the same size, some large pieces of feed will be missed and mixed in with the finished product, which will affect the quality of the finished product.

[0006] Therefore, there is still room for improvement on the existing foundation in order to overcome the aforementioned technical shortcomings. Summary of the Invention

[0007] To address the aforementioned problems, firstly, this application provides a gradient shear multi-stage mixing device for heat-sensitive components in feed, employing the following technical solution: It includes a mixing tank for mixing feed, with a feed cylinder with a funnel-shaped bottom installed on the upper side of the mixing tank, and a shearing mechanism installed inside the feed cylinder to cut the falling feed.

[0008] The feed cylinder is also equipped with a return mechanism for returning the filtered feed. The return mechanism includes an outer tube and a conical filter screen fitted at its bottom below the shearing mechanism. The outer tube has an inlet and an outlet on its side from top to bottom. An auger is rotatably installed inside the outer tube. The feed that enters the outer tube from the inlet will be output from the outlet through the rotating auger.

[0009] The mixing tank is equipped with a feed distribution mechanism that changes the way the feed enters. The feed distribution mechanism includes a disc with a bottom opening at the center of the lower side and multiple circumferentially evenly distributed openings on the side. When the disc is stationary, the feed leaks out from the bottom opening and falls vertically. When it rotates, the feed is thrown out from the opening in a parabolic manner by centrifugal force.

[0010] Preferably, the shearing mechanism includes a rotating tube rotatably mounted outside the outer tube and located between the feed inlet and the discharge outlet. Two sets of cutters distributed vertically are mounted on the side of the rotating tube. The longitudinal spacing between two adjacent cutters in the upper set is larger than that in the lower set. The shearing mechanism is also provided with a drive component that drives the rotating tube to rotate and uses the cutters to shear the feed passing through.

[0011] Preferably, the return mechanism further includes an iron ring rotatably mounted on the inner wall of the feed cylinder and located above the conical filter screen. The inner wall of the iron ring is circumferentially equipped with multiple evenly distributed baffles whose lower edges are slidably connected to the upper side of the conical filter screen. A drive mechanism for driving the iron ring to rotate is also provided on the outside of the mixing tank.

[0012] Preferably, the lowest point of the conical filter screen is at the same height as the lower edge of the feed inlet. Columnar blocks are installed inside the outer tube at both ends of the auger. An electric cylinder with a telescopic arm pointing vertically upwards is installed on the outside of the feed cylinder. A motor is installed at the end of the telescopic arm of the electric cylinder, directly above the outer tube, with its drive end connected to the upper end of the auger. When the electric cylinder extends to a medium length, the lower columnar block is exactly at the same height as the feed inlet, blocking it.

[0013] Preferably, the material distribution mechanism includes a set of two electric cylinders symmetrically installed on the lower side of the disc with their telescopic arms facing the lower opening. The telescopic arms of the two electric cylinders are equipped with baffles. When the two electric cylinders are extended to their maximum length, the two baffles combine to block the lower opening.

[0014] Preferably, the upper side of the mixing tank has a circular opening with the same inner diameter as the disc. The upper side of the disc is open and rotatably connected to the top surface of the mixing tank. An upper plate adapted to the disc is provided inside the circular opening. A vertical pipe extending to the lower port of the feed cylinder is provided on the upper plate. A set of L-shaped seats are symmetrically installed around the upper plate on the upper side of the mixing tank. A spring is connected between the L-shaped seats and the upper side of the upper plate.

[0015] Preferably, the lower end of the auger extends to the outside of the outer tube and is equipped with a telescopic rod whose lower end extends into the disc. The inner wall of the disc is equipped with a vertical plate whose end is connected to the lower rod of the telescopic rod between every two adjacent openings.

[0016] Preferably, a motor is installed on the side of the mixing tank, the drive end of the motor extends into the mixing tank and is equipped with stirring blades, and a discharge pipe extending to the outside is installed on the inner wall of the mixing tank near the bottom.

[0017] Preferably, an inclined feed pipe is installed on the side of the feed cylinder near the bottom above the vertical pipe, and an air inlet pipe is installed on the upper side of the mixing tank on one side of the feed cylinder.

[0018] On the other hand, this application also discloses a gradient shear multi-stage mixing method for heat-sensitive components in feed: the method includes the following steps: S1. Feed shearing: Various feeds are sequentially fed into the feed hopper, and the shearing mechanism is used to perform gradient shearing on the feed. S2. Feed filtration: The feed after shearing is filtered using a return feed mechanism.

[0019] S3. Secondary shearing: After primary filtration, the large feed particles filtered out are returned to the feed via a return mechanism for secondary shearing.

[0020] S4. Uniform feeding: The feed distribution mechanism ensures a more even distribution of feed within the mixing tank.

[0021] S5, multi-stage mixing, involves high-speed mixing of various feeds entering the mixing tank, followed by low-speed mixing when probiotics are added.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. This application is equipped with a feed return mechanism. First, the sheared feed is filtered. After filtration, the large pieces of feed filtered out above the conical filter screen are discharged from the outlet by the rotating auger and fall back down for secondary shearing. This operation is repeated until no feed is filtered out of the conical filter screen. In this way, not only can the feed be filtered to avoid the presence of large pieces of feed in the finished feed, which affects the quality of the finished product, but also the large pieces of feed can be directly returned for secondary shearing, avoiding the waste of large pieces of feed.

[0023] Second, this application utilizes a feeding mechanism to first allow feed to fall vertically from the bottom outlet and accumulate below it. Once the feed reaches a set height, the bottom outlet closes and the disc rotates, causing the feed to be thrown out of the opening in a parabolic trajectory by centrifugal force. This allows the feed to fall around the original pile, preventing it from accumulating and blocking the inlet, while also allowing the feed to reach a position inside the mixing tank away from the inlet. This fully utilizes the large volume of the mixing tank, allowing more feed to be mixed at once. Furthermore, during the subsequent addition of probiotics, probiotics can be added to multiple locations within the chamber, improving mixing efficiency.

[0024] Third, by coordinating the return and distribution mechanisms, when it is necessary to clean the inside of the disc, the electric cylinder can extend to drive the upper plate to rise through the components, thereby opening the disc and facilitating the cleaning of residual feed or other materials inside the disc. Afterwards, the electric cylinder can shorten to drive the upper plate to descend and automatically close the disc. Attached Figure Description

[0025] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a structural diagram of this application.

[0027] Figure 2 This is a schematic diagram of the internal structure of the tank in this application.

[0028] Figure 3 This is a schematic diagram of the main structure of this application.

[0029] Figure 4 This is a schematic diagram of the shearing mechanism structure of this application.

[0030] Figure 5 This is a schematic diagram of the material return mechanism structure in this application.

[0031] Figure 6 This is a cross-sectional view of the material return mechanism in this application.

[0032] Figure 7 This is a schematic diagram of the drive mechanism structure of this application.

[0033] Figure 8 This is a schematic diagram of the material distribution mechanism in this application.

[0034] Figure 9 This is a schematic diagram of the main structure of the material distribution mechanism in this application.

[0035] Figure 10 This is a cross-sectional view of the material distribution mechanism in this application.

[0036] In the diagram: 1. Mixing tank; 2. Feed cylinder; 3. Shearing mechanism; 301. Rotary tube; 302. Cutter; 303. Annular disc; 304. Connecting arm; 305. Motor 1; 306. Gear ring 1; 307. Gear 1; 4. Return mechanism; 401. Outer tube; 402. Conical filter screen; 403. Feed inlet; 404. Discharge outlet; 405. Screwdriver; 406. Iron ring; 407. Baffle plate; 408. Electric cylinder 1; 410. Motor 2; 411. Cylindrical block; 5. Drive mechanism; 501. Gear ring 2; 502. Magnetic block 503. Motor 3; 504. Gear 2; 6. Material distribution mechanism; 601. Disc; 602. Telescopic rod; 603. Vertical plate; 604. Opening; 605. Lower opening; 606. Electric cylinder 2; 607. Baffle; 608. Upper plate; 609. L-shaped seat; 610. Vertical rod; 611. Limiting plate; 612. Spring; 613. Limiting ring; 614. Pulley; 7. Feed pipe; 8. Air inlet pipe; 9. Motor 4; 10. Stirring blade; 11. Discharge pipe; 12. Electric cylinder 3; 13. Annular baffle; 14. Input pipe. Detailed Implementation

[0037] The following combination Figure 1 - Figure 10 The embodiments of this application will be described in detail.

[0038] This application discloses a multi-stage mixing device and method for gradient shearing of heat-sensitive components in feed. It includes a return mechanism. First, the sheared feed is filtered. After filtration, a rotating auger discharges large pieces of feed filtered out from the conical filter screen through the outlet, allowing them to fall back down for secondary shearing. This process is repeated until no feed is filtered out from the conical filter screen. This not only filters the feed, preventing large pieces from affecting the quality of the finished product, but also allows large pieces of feed to be directly returned for secondary shearing, avoiding waste.

[0039] Example 1: This application discloses a gradient shear multi-stage mixing device for heat-sensitive components in feed: like Figure 1 and Figure 2 As shown, the mixture includes a mixing tank 1 for mixing feed. A feed cylinder 2 with a funnel-shaped lower end is installed on the upper side of the mixing tank 1. A shearing mechanism 3 for shearing the falling feed is installed inside the feed cylinder 2. An input pipe 14 is installed on the side of the feed cylinder 2 near the upper end. Feed is fed into the feed cylinder 2 through the input pipe 14, and the shearing mechanism 3 shears the feed before it enters the mixing tank 1 for mixing.

[0040] like Figure 2As shown, a motor 4 9 is installed on the side of the mixing tank 1. The drive end of the motor 4 9 extends into the mixing tank 1 and is equipped with a stirring blade 10. The stirring blade 10 is arranged horizontally and its two ends are mounted on the inner wall of the mixing tank 1 through bearings. A discharge pipe 11 extending to the outside is installed on the inner wall of the mixing tank 1 near the bottom. After various feeds are fed into the mixing tank 1, the motor 4 9 drives the stirring blade 10 to rotate, and the stirring blade 10 is used to mix the various feeds. Then, when powdered probiotics are added, the motor 4 9 is controlled to reduce the speed of the stirring blade 10 and mix it at a low speed to avoid the surface of the stirring blade 10 from overheating at high speed and affecting the heat-sensitive components in the probiotics, thereby performing multi-stage mixing. After the mixing is completed, the feed is discharged from the discharge pipe 11.

[0041] The discharge pipe 11 has a port cap that is threadedly connected to it. When discharge is needed, unscrew the port cap to let the feed out. After discharge, screw the port cap back on.

[0042] like Figure 2 and Figure 3 As shown, an inclined feed pipe 7 is installed on the side of the feed cylinder 2 near the bottom. An air inlet pipe 8 is installed on the upper side of the mixing tank 1 on one side of the feed cylinder 2. The feed pipe 7 can be used to send powdered probiotics into the mixing tank 1. The upper end of the air inlet pipe 8 is connected to the output end of an external air cooler. The running air cooler sends cold air into the mixing tank 1 to lower its internal temperature and prevent the temperature from being too high and affecting the heat-sensitive components in the probiotics. The air cooler is a conventional industrial air cooler using existing technology.

[0043] In summary, the feed is fed into the feed cylinder 2 through the input pipe 14, and the feed is cut by the shearing mechanism 3. The cut feed enters the mixing tank 1. After the various feeds are fed into the mixing tank 1, the motor 4 9 drives the stirring blade 10 to rotate. The stirring blade 10 is used to mix the various feeds. Then, the motor 4 9 is controlled to reduce the speed of the stirring blade 10, and powdered probiotics are fed into the mixing tank 1 through the feed pipe 7. The rotating stirring blade 10 is used to mix the feed with the powdered probiotics. The cold air is injected into the mixing tank 1 by the cold air fan to maintain the low temperature in the mixing tank 1 and avoid the temperature from being too high and affecting the heat-sensitive components in the mixing tank 1.

[0044] like Figures 1-4 As shown, the shearing mechanism 3 includes a vertically arranged rotating tube 301. Two sets of vertically distributed cutters 302 are installed on the side of the rotating tube 301. The longitudinal spacing between two adjacent cutters 302 in the upper set is larger than that in the lower set. When the feed is fed into the feed cylinder 2, the rotating tube 301 drives the cutters 302 to rotate and shear the descending feed. The upper cutters 302 with larger longitudinal spacing cut the feed into large pieces, and then the lower cutters 302 with smaller longitudinal spacing cut the large pieces of feed into smaller pieces, thus achieving gradient shearing.

[0045] The shearing mechanism 3 is also equipped with a drive assembly that drives the rotating tube 301 to rotate and uses the cutter 302 to shear the passing feed.

[0046] like Figure 3 and Figure 4 As shown, the drive assembly includes an annular disk 303 rotatably mounted on the inner wall of the feed cylinder 2 and rotatably connected to the outer tube 401 on its inner side. A set of connecting arms 304 connected to the rotating tube 301 are symmetrically mounted on the lower side of the annular disk 303. The annular disk 303 prevents the waste generated by shearing from being discharged from the upper port of the feed cylinder 2. At the same time, the rotating annular disk 303 can also drive the rotating tube 301 to rotate through the connecting arms 304.

[0047] like Figure 3 and Figure 4 As shown, a gear ring 306 with the same center is installed on the upper side of the annular disk 303. A motor 305 is installed on the inner wall of the feed cylinder 2 above the annular disk 303. A gear 307 that meshes with the gear ring 306 is installed on the drive end of the motor 305. The running motor 305 drives the gear 307 to rotate. The rotating gear 307 drives the annular disk 303 to rotate through the meshing gear ring 306.

[0048] In summary, the running motor 305 drives the gear 307 to rotate. The rotating gear 307 drives the annular disk 303 to rotate through the meshing gear ring 306. The rotating annular disk 303 can also drive the rotating tube 301 to rotate through the connecting arm 304. When the feed is put into the feed cylinder 2, the rotating tube 301 drives the cutter 302 to rotate and cut the descending feed. The upper cutter 302 with a large longitudinal spacing cuts the feed into large pieces, and then the lower cutter 302 with a small longitudinal spacing cuts the large pieces of feed into smaller pieces, thus achieving gradient cutting.

[0049] like Figure 1 and Figure 5 As shown, the feed cylinder 2 is also equipped with a feed return mechanism 4 that can filter the feed and return the filtered feed.

[0050] like Figure 3 and Figure 5 As shown, the return mechanism 4 includes an outer tube 401 fitted inside and rotatably connected to the rotating tube 301, and a conical filter screen 402 fitted at its bottom below the shearing mechanism 3. The outer tube 401 has an inlet 403 and an outlet 404 sequentially opened from top to bottom on its side. The rotating tube 301 is located between the inlet 403 and the outlet 404. An auger 405 is rotatably installed inside the outer tube 401. The conical filter screen 402 filters the sheared feed, filtering out large particles of feed and leaving them above the conical filter screen 402. At the same time, the feed filtered out from the inlet 403 into the outer tube 401 will be output from the outlet 404 through the rotating auger 405 and continue to fall for secondary shearing.

[0051] like Figure 5 and Figure 6 As shown, the return material mechanism 4 also includes an iron ring 406 rotatably installed on the inner wall of the feed cylinder 2 and above the conical filter screen 402. The inner wall of the iron ring 406 is circumferentially equipped with multiple evenly distributed baffles 407 whose lower edges are slidably connected to the upper side of the conical filter screen 402. The outside of the mixing tank 1 is also provided with a drive mechanism 5 for driving the iron ring 406 to rotate. The drive mechanism 5 drives the iron ring 406 to rotate, and the rotating iron ring 406 drives the baffles 407 to rotate. The rotating baffles 407 drive the feed above the conical filter screen 402 to move, thereby improving the filtration effect and scraping off the feed adhering to the conical filter screen 402. At the same time, when two adjacent baffles 407 rotate, they can also drive the feed between them to move. When it moves to the same side of the feed inlet 403, it will enter the feed.

[0052] like Figure 5 and Figure 6 As shown, the lowest point of the conical filter screen 402 is at the same height as the lower edge of the feed inlet 403, facilitating the sliding of feed on the conical filter screen 402 into the feed inlet 403. Columnar blocks 411 are installed at both ends of the auger 405 inside the outer tube 401. When the lower columnar block 411 blocks the feed inlet 403, it prevents feed from entering the feed inlet 403 during filtration. When the auger 405 descends, it causes the two columnar blocks 411 to descend, allowing the lower columnar block 411 to release the blockage of the feed inlet 403, while the upper columnar block 411 blocks the discharge outlet 404. Feed is fed upward through the inlet 403 via a rotating auger 405. Due to the limiting effect of the upper cylindrical block 411, the feed accumulates at the top. When the feed above the conical filter screen 402 has completely entered the outer tube 401, the auger 405 rises to block the lower cylindrical block 411 at the inlet 403. At the same time, the upper cylindrical block 411 rises to open the outlet 404. Then, the rotating auger 405 outputs the feed in the outer tube 401 from the outlet 404 and continues to fall for secondary shearing. The operation is repeated until there is no feed residue above the conical filter screen 402.

[0053] like Figure 5 and Figure 6 As shown, an electric cylinder 408 with a telescopic arm extending vertically upwards is installed on the outside of the feed cylinder 2. A motor 410 is installed at the end of the telescopic arm of the electric cylinder 408, which is directly above the outer tube 401 and whose drive end is connected to the upper end of the auger 405. When the electric cylinder 408 extends to a medium length, the lower cylindrical block 411 is exactly at the same height as the feed inlet 403 and blocks it. When the electric cylinder 408 retracts to its shortest length, the lower cylindrical block 411 releases the blockage of the feed inlet 403, while the upper cylindrical block 411 blocks the discharge outlet 404. The running motor 410 can drive the auger 405 to rotate.

[0054] like Figure 2 and Figure 7As shown, the drive mechanism 5 includes a toothed ring 501 rotatably mounted on the outside of the mixing tank 1 and below the iron ring 406. A magnetic block 502 with its inner side in close contact with the outer surface of the feed cylinder 2 is mounted on the upper side of the toothed ring 501 and is slidably connected to it. A magnetic torque is generated between the magnetic block 502 and the iron ring 406. When the toothed ring 501 to be rotated drives the magnetic block 502 to rotate around the feed cylinder 2, it also drives the iron ring 406 to rotate.

[0055] like Figure 7 As shown, a motor 3 503 is installed on the side of the feed cylinder 2 below the gear ring 2 501. The drive end of the motor 3 503 is equipped with a gear 2 504 that meshes with the gear ring 2 501. The running motor 3 503 drives the gear ring 2 501 to rotate through the gear 2 504.

[0056] In summary, the conical filter 402 filters the sheared feed, leaving large particles above it. Simultaneously, the drive mechanism 5 rotates the iron ring 406 and the baffle 407. The rotating baffle 407 moves the feed above the conical filter 402, improving filtration efficiency and scraping off feed adhering to the filter. Once all feed is fed in, the electric cylinder 408 retracts to its shortest position, releasing the lower cylindrical block 411 from blocking the feed inlet 403 while simultaneously blocking the upper cylindrical block 411 from blocking the discharge outlet 404. The second motor 410 drives the auger 405 to rotate, and the two adjacent baffles 407 rotate simultaneously. It can also drive the movement of feed between the two. When it moves to the same side as the feed inlet 403, it will enter the feed inlet and be conveyed upward by the rotating auger 405. Due to the limiting of the upper cylindrical block 411, the feed accumulates at the top. When the feed above the conical filter screen 402 has completely entered the outer tube 401, the electric cylinder 408 extends to a medium length, causing the auger 405 to rise and the lower cylindrical block 411 to block the feed inlet 403. At the same time, the upper cylindrical block 411 rises and the discharge port 404 opens. Then the rotating auger 405 outputs the feed in the outer tube 401 from the discharge port 404 and continues to fall for secondary shearing. Then the operation is repeated until there is no feed residue above the conical filter screen 402.

[0057] like Figure 2 and Figure 8 As shown, the mixing tank 1 is equipped with a feed distribution mechanism 6 that changes the way feed enters. The feed distribution mechanism 6 includes a disc 601. The disc 601 has a lower opening 605 at the center of its lower side and multiple circumferentially evenly distributed openings 604 on its side. When the disc 601 is stationary and the lower opening 605 is open, the feed is allowed to leak out from the lower opening 605 and fall vertically. After the feed below has piled up to a certain height, the lower opening 605 is closed and the disc 601 is rotated. The feed is thrown out from the opening 604 in a parabolic trajectory by centrifugal force, allowing the feed to accumulate around and making the feed distribution in the mixing tank 1 more uniform.

[0058] likeFigures 8-10 As shown, the material distribution mechanism 6 also includes a set of electric cylinders 606 symmetrically installed on the lower side of the disc 601 with their telescopic arms facing the lower opening 605. The telescopic arms of the electric cylinders 606 are equipped with baffles 607. When the two electric cylinders 606 are extended to their longest length, the two baffles 607 are combined to block the lower opening 605. When the two lower openings 605 are shortened, the two baffles 607 move away from each other to release the blockage of the lower opening 605. The electric cylinders 606 are also covered with dust covers to prevent fine debris from entering the interior of the electric cylinders 606 and affecting their use.

[0059] like Figure 9 and Figure 10 As shown, the lower end of the auger 405 extends to the outside of the outer tube 401 and is equipped with a telescopic rod 602 that extends into the disc 601. The inner wall of the disc 601 is equipped with a vertical plate 603 between each pair of adjacent openings 604, the end of which is connected to the lower rod of the telescopic rod 602. When the auger 405 rotates, it will also drive the disc 601 to rotate through the telescopic rod 602. At the same time, the feed entering the disc 601 will be rotated by the two adjacent vertical plates 603. The vertical plates 603 are used to limit the feed, so that it can be better thrown out from the opening 604 when the disc 601 rotates.

[0060] When 408 is extended to a medium length, the telescopic rod 602 is at its longest position. When the auger 405 descends, it will also compress the telescopic rod 602.

[0061] like Figures 8-10 As shown, the upper side of the mixing tank 1 has a circular opening with the same inner diameter as the disc 601. The upper side of the disc 601 is open and rotatably connected to the inner top surface of the mixing tank 1. An upper plate 608 adapted to the circular opening is provided inside the circular opening. A vertical pipe extending to the lower port of the feed cylinder 2 is provided on the upper plate 608. The feed enters the vertical pipe from the lower end of the feed cylinder 2 and then enters the disc 601. When the upper plate 608 rises, the circular opening can be opened to facilitate the cleaning of the feed retained in the disc 601.

[0062] like Figure 10 As shown, a set of L-shaped seats 609 are symmetrically installed around the upper plate 608 on the upper side of the mixing tank 1. A spring 612 is connected between the L-shaped seat 609 and the upper side of the upper plate 608. Each L-shaped seat 609 has a vertical rod 610 inserted on its upper side, with its lower end connected to the upper plate 608. A limit plate 611 is installed on the upper end of the vertical rod 610. When the upper plate 608 rises, it will compress the spring 612. When the spring 612 rebounds, it will drive the upper plate 608 to fall. When the limit plate 611 contacts the L-shaped seat 609, the upper plate 608 will cover the round opening.

[0063] like Figure 10As shown, a limiting ring 613 with an inclined upper side is installed on the inner wall of the vertical tube. A lever 614 located below the limiting ring 613 is installed on the upper side of the telescopic rod 602. When the electric cylinder 408 continues to extend from the medium length, it drives the telescopic rod 602 to rise. When the lever 614 contacts the limiting ring 613, it also drives the upper plate 608 to rise, opening the round opening.

[0064] A controller (not shown) is installed on the outer side of the mixing tank 1. A horizontally arranged photoelectric sensor (not shown) is installed inside the mixing tank 1 near the inner top surface. The photoelectric sensor detects the height of the feed accumulation below the vertical rod 610. When the predetermined height is reached, a signal is sent to the controller. The controller controls the electric cylinder 606 to extend and close the lower opening 605. At the same time, the motor 410 runs and makes the disc 601 rotate, throwing the feed out from the opening 604 in a parabolic arc around the original accumulated feed, making the feed distribution in the mixing tank 1 more uniform.

[0065] In summary, with the lower port 605 open, the falling feed enters the disc 601 from the lower port of the feed cylinder 2 and falls vertically from the lower port 605, allowing the feed to accumulate below the disc 601. When the predetermined height is reached, the photoelectric sensor sends a signal to the controller, which controls the electric cylinder 606 to extend and close the lower port 605. At the same time, the motor 410 runs, causing the disc 601 to rotate and throw the feed out from the opening 604, landing in a parabola around the original accumulated feed, making the feed distribution in the mixing tank 1 more uniform. Furthermore, during the subsequent addition of powdered probiotics, the above operation can also be used to allow the powdered probiotics to fall from the lower port 605 first and then be thrown out from the opening 604, achieving uniform addition, reducing subsequent mixing time, and increasing work efficiency.

[0066] When the inside of the disc 601 needs to be cleaned, the electric cylinder 408 extends, causing the telescopic rod 602 to rise. When the toggle block 614 contacts the limit ring 613, it also causes the upper plate 608 to rise, compressing the spring 612 and opening the round opening. Then the inside of the disc 601 can be cleaned. When returning to its original position, the electric cylinder 408 shortens to a medium length. When the spring 612 rebounds, it causes the upper plate 608 to fall. When the limit plate 611 contacts the L-shaped seat 609, the upper plate 608 covers the round opening.

[0067] Example 2: Based on Example 1, such as Figure 2As shown, the outer side of the disc 601 is fitted with an annular baffle 13 that seals all openings 604. A set of telescopic arms is installed on the upper side of the mixing tank 1, extending into the mixing tank 1 and connected to the annular baffle 13 by an electric cylinder 12. During sealing, splashed feed is prevented from being discharged from the openings 604. Before the disc 601 rotates, the electric cylinder 12 shortens, causing the annular baffle 13 to move above the opening 604 to open it. At the same time, the shortening length of the electric cylinder 12 can be controlled to adjust the opening area of ​​the opening 604, thereby controlling the amount of material thrown out under the fixed rotation speed of the disc 601 and achieving precise filling.

[0068] This application also discloses a gradient shear multi-stage mixing method for heat-sensitive components in feed, the steps of which are as follows: S1. Feed shearing: Various feeds are sequentially fed into the feed cylinder 2. The shearing mechanism 3 performs gradient shearing on the feed. Specifically, the feed is fed into the feed cylinder 2 through the input pipe 14. The running motor 305 drives the rotating pipe 301 to rotate. When the feed is fed into the feed cylinder 2, the rotating pipe 301 drives the cutter 302 to rotate and shear the descending feed. The upper cutter 302 with a large longitudinal spacing cuts the feed into large pieces, and then the lower cutter 302 with a small longitudinal spacing cuts the large pieces of feed into smaller pieces, thus achieving gradient shearing. The sheared feed continues to fall.

[0069] S2. Feed filtration: The feed after shearing is filtered using the return mechanism 4. Specifically, the conical filter screen 402 filters the sheared feed, leaving large particles above the conical filter screen 402. At the same time, the drive mechanism 5 drives the iron ring 406 and the baffle 407 to rotate. The rotating baffle 407 moves the feed above the conical filter screen 402, improving the filtration effect and scraping off the feed adhering to the conical filter screen 402 to prevent it from clogging the filter holes.

[0070] S3. Secondary shearing: After primary filtration, the return material mechanism 4 returns the filtered large-particle feed for secondary shearing. Specifically, the electric cylinder 408 retracts to its shortest length, the lower cylindrical block 411 releases the blockage of the feed inlet 403, and the upper cylindrical block 411 blocks the discharge outlet 404. The running motor 410 drives the auger 405 to rotate. At the same time, the rotation of the two adjacent baffles 407 also drives the feed between them. When it moves to the same side as the feed inlet 403, it enters the feed. Through the rotating auger 405... 05. The feed is conveyed upwards. Due to the limiting effect of the upper cylindrical block 411, it accumulates at the top. When the feed above the conical filter screen 402 is completely inside the outer tube 401, the electric cylinder 408 extends to a medium length, causing the auger 405 to rise. At the same time, the lower cylindrical block 411 blocks the feed inlet 403, and the upper cylindrical block 411 rises to open the discharge port 404. Then, the rotating auger 405 outputs the feed in the outer tube 401 from the discharge port 404 and continues to fall for secondary shearing. The operation is repeated until there is no feed residue above the conical filter screen 402.

[0071] S4. Uniform feeding: The feed distribution mechanism 6 makes the feed in the mixing tank 1 more even. Specifically, the lower port 605 is opened, and the falling feed enters the disc 601 from the lower port of the feed cylinder 2 and falls vertically from the lower port 605, allowing the feed to accumulate below the disc 601. When the predetermined height is reached, the photoelectric sensor sends a signal to the controller, which controls the electric cylinder 606 to extend and close the lower port 605. At the same time, the motor 410 runs to rotate the disc 601, throwing the feed out from the opening 604 in a parabolic arc around the original accumulated feed, preventing the feed from continuing to accumulate below the disc 601 and making the feed distribution in the mixing tank 1 more even. At the same time, in the subsequent process of adding powdered probiotics, the above operation can also be used to make the powdered probiotics fall from the lower port 605 first and then be thrown out from the opening 604.

[0072] S5. Multi-stage mixing: High-speed mixing of various feeds entering mixing tank 1, followed by low-speed mixing when adding probiotics. Specifically, motor 49 drives the mixing blade 10 to rotate at high speed, using the mixing blade 10 to mix various feeds. Then, motor 49 is controlled to reduce the speed of the mixing blade 10, and powdered probiotics are fed into mixing tank 1 through feed pipe 7. The rotating mixing blade 10 mixes the feed with the powdered probiotics. Cold air is injected into mixing tank 1 through a cold air blower to maintain a low temperature inside mixing tank 1, avoiding excessive temperature affecting the heat-sensitive components inside mixing tank 1. After mixing is completed, the mixed feed is discharged from discharge pipe 11.

[0073] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0074] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-stage feed heat-sensitive component gradient shearing mixing device, comprising a mixing tank (1) for mixing feed, a feed inlet cylinder (2) with a funnel-shaped lower end installed on the upper side of the mixing tank (1), and a shearing mechanism (3) for shearing the falling feed inside the feed inlet cylinder (2), characterized in that: The feed cylinder (2) is also equipped with a return mechanism (4) for returning the filtered feed. The return mechanism (4) includes an outer tube (401) and a conical filter screen (402) fitted at its bottom below the shearing mechanism (3). The outer tube (401) has an inlet (403) and an outlet (404) opened from top to bottom on its side. An auger (405) is rotatably installed inside the outer tube (401). The feed entering the outer tube (401) from the inlet (403) will be output from the outlet (404) through the rotating auger (405). The mixing tank (1) is equipped with a feeding mechanism (6) that changes the way the feed enters. The feeding mechanism (6) includes a disc (601). The disc (601) has a lower opening (605) at the center of its lower side and multiple circumferentially distributed openings (604) on its side. When the disc (601) is stationary, the feed is allowed to leak out from the lower opening (605) and fall vertically. When it rotates, the feed is thrown out from the opening (604) in a parabolic manner by centrifugal force.

2. The feed thermosensitive component gradient shear multi-stage mixing device according to claim 1, characterized in that: The shearing mechanism (3) includes a rotating tube (301) rotatably installed outside the outer tube (401) and located between the feed inlet (403) and the discharge outlet (404). Two sets of cutters (302) are installed on the side of the rotating tube (301) and distributed vertically. The longitudinal spacing between two adjacent cutters (302) in the upper set is larger than that in the lower set. The shearing mechanism (3) is also provided with a drive assembly that drives the rotating tube (301) to rotate and uses the cutters (302) to shear the feed passing through.

3. The feed thermosensitive component gradient shear multi-stage mixing device according to claim 1, characterized in that: The return mechanism (4) also includes an iron ring (406) that is rotatably installed on the inner wall of the feed cylinder (2) and above the conical filter screen (402). The inner wall of the iron ring (406) is circumferentially equipped with multiple evenly distributed baffles (407) whose lower sides are slidably connected to the upper side of the conical filter screen (402). A drive mechanism (5) for driving the iron ring (406) to rotate is also provided on the outside of the mixing tank (1).

4. The feed thermosensitive component gradient shear multi-stage mixing device according to claim 1, characterized in that: The lowest point of the conical filter screen (402) is at the same height as the lower edge of the feed inlet (403). Columnar blocks (411) are installed inside the outer tube (401) at both ends of the auger (405). An electric cylinder (408) with a telescopic arm pointing vertically upwards is installed on the outside of the feed cylinder (2). A motor (410) is installed at the end of the telescopic arm of the electric cylinder (408), which is directly above the outer tube (401) and whose drive end is connected to the upper end of the auger (405). When the electric cylinder (408) extends to a medium length, the lower columnar block (411) is exactly at the same height as the feed inlet (403) to block it.

5. The feed thermosensitive component gradient shear multi-stage mixing device according to claim 1, characterized in that: The material distribution mechanism (6) includes a set of electric cylinders (606) symmetrically installed on the lower side of the disc (601) with their telescopic arms facing the lower opening (605). The telescopic arms of the electric cylinders (606) are equipped with baffles (607). When the two electric cylinders (606) are extended to their longest length, the two baffles (607) are combined to block the lower opening (605).

6. The feed thermosensitive component gradient shear multi-stage mixing device according to claim 1, characterized in that: The mixing tank (1) has a circular opening on its upper side with the same inner diameter as the disc (601). The upper side of the disc (601) is open and rotatably connected to the inner top surface of the mixing tank (1). An upper plate (608) is provided in the circular opening and is adapted to it. A vertical pipe extending to the lower port of the feed cylinder (2) is provided on the upper plate (608). A set of L-shaped seats (609) are symmetrically installed around the upper plate (608) on the upper side of the mixing tank (1). A spring (612) is connected between the L-shaped seat (609) and the upper side of the upper plate (608).

7. The feed thermosensitive component gradient shear multi-stage mixing device according to claim 6, characterized in that: The lower end of the auger (405) extends to the outside of the outer tube (401) and is equipped with a telescopic rod (602) whose lower end passes through the upper plate (608) and extends into the disc (601). The inner wall of the disc (601) is equipped with a vertical plate (603) whose end is connected to the lower rod of the telescopic rod (602) between every two adjacent openings (604).

8. The feed thermosensitive component gradient shear multi-stage mixing device according to claim 1, characterized in that: A motor four (9) is installed on the side of the mixing tank (1). The drive end of the motor four (9) extends into the mixing tank (1) and is equipped with a stirring blade (10). A discharge pipe (11) extending to the outside is installed on the inner wall of the mixing tank (1) near the bottom.

9. The feed thermosensitive component gradient shear multi-stage mixing device according to claim 1, characterized in that: An inclined feed pipe (7) is installed on the side of the feed cylinder (2) near the bottom above the vertical pipe, and an air inlet pipe (8) is installed on the upper side of the mixing tank (1) on one side of the feed cylinder (2).

10. A method for gradient shear mixing of heat-sensitive components in feed, comprising the multi-stage mixing apparatus for gradient shear mixing of heat-sensitive components in feed as described in any one of claims 1 to 9, characterized in that: The method includes the following steps: S1. Feed shearing: Various feeds are put into the feed hopper (2) in sequence, and the feed is sheared in a gradient by the shearing mechanism (3). S2. Feed filtration: The feed after shearing is filtered using the feed return mechanism (4). S3. Secondary shearing: After the first filtration is completed, the large particle feed is returned to the feed using the return material mechanism (4) for secondary shearing. S4. Uniform feeding: The feed distribution in the mixing tank (1) is made more uniform by using the feeding distribution mechanism (6). S5. Multi-stage mixing: High-speed stirring and mixing of various feeds entering the mixing tank (1), followed by low-speed stirring when adding probiotics.

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