A counterflow cooler for feed production

Abstract

The application discloses a feed production counterflow cooler and belongs to the technical field of coolers. The feed production counterflow cooler comprises a rack, a collecting hopper and a cooling box body are installed on the rack, a discharging mechanism is installed between the cooling box body and the collecting hopper, a gap for air inlet is arranged between the discharging mechanism and the collecting hopper, a rotary feeder is installed on the top of the cooling box body, a material transferring device and a material distributing device are installed in the cooling box body, an air outlet is arranged on the top side of the cooling box body, an air suction system is arranged at the air outlet, and a driving assembly for driving the material transferring device and the material distributing device to rotate is arranged in the cooling box body. The application can keep the cooling effect of the feed consistent.

Description

Technical Field

[0001] This application relates to the technical field of coolers, and in particular to a counter-flow cooler for feed production. Background Technology

[0002] During feed production, pelleted feed is subjected to high-temperature pressing in a pellet mill, resulting in a high temperature and a large amount of moisture. Cooling treatment is necessary to reduce the temperature and moisture content, facilitating subsequent storage and transportation. Currently, feed cooling technologies mainly include counter-flow coolers, co-flow coolers, and cross-flow coolers.

[0003] Traditional counter-flow coolers achieve a cooling effect by exchanging heat between cold air and hot particles through the counter-flow principle. However, the uneven distribution of cooling airflow within the cooling shell leads to inconsistent cooling effects on the feed. Summary of the Invention

[0004] To improve the problem of inconsistent cooling effect of feed, this application provides a counter-flow cooler for feed production.

[0005] The counter-flow cooler for feed production provided in this application adopts the following technical solution: A counter-flow cooler for feed production includes a frame, on which a hopper and a cooling box are mounted. A discharge mechanism is installed between the cooling box and the hopper, and a gap for air intake is provided between the discharge mechanism and the hopper. A rotary feeder is installed on the top of the cooling box, and a feeder and a feed spreader are installed inside the cooling box. An air outlet is provided on the top side of the cooling box, and a suction system is provided at the air outlet. A drive assembly for driving the feeder and the feed spreader to rotate is provided inside the cooling box.

[0006] By adopting the above technical solution, high-temperature and high-humidity feed pellets are fed into the cooling box through a rotary feeder. The feed pellets are evenly distributed in the cooling box by the rotating feeder and distributor. Outside cold air enters the cooling box through the gaps in the discharge mechanism under the action of the suction system. The cold air first contacts the lower-temperature feed pellets at the bottom of the cooling box. As the outside air flows upward, its temperature rises and it comes into contact with the higher-temperature feed pellets. This achieves contact between cold air and cold feed, and between hot air and hot feed, so that the pellets are cooled gradually in the same direction. This avoids cracking of the pellet surface caused by sudden cooling and ensures that the cooling effect of the feed is consistent.

[0007] Preferably, the drive assembly includes a first gearbox fixed inside the cooling box, a rotating shaft one coaxially fixed to the top output end of the first gearbox, the feeder fixedly connected to the rotating shaft one, a rotating shaft two coaxially fixed to the bottom output end of the first gearbox, the feeder fixedly connected to the rotating shaft two, and a drive motor mounted on the side of the cooling box, the output end of the drive motor fixedly connected to the input end of the first gearbox.

[0008] By adopting the above technical solution, the drive motor is started, and the drive motor drives the first rotating shaft and the second rotating shaft to rotate through the first gearbox. The first rotating shaft drives the feeder to rotate, and the second rotating shaft drives the feeder to rotate, so that the feed particles are evenly distributed in the cooling box.

[0009] Preferably, the discharge mechanism includes a plurality of rotating plates rotatably mounted on the frame. Each rotating plate includes an upward-flipping plate, and a downward-flipping plate is fixed to the bottom surface of the upward-flipping plate. The bottom surface of the upward-flipping plate can be in contact with the top surface of the adjacent downward-flipping plate. A rotating assembly for driving the plurality of rotating plates to rotate synchronously is installed on the frame.

[0010] By adopting the above technical solution, a rotating component drives several rotating plates to rotate, and the rotating plates drive the upper and lower turning plates to rotate, so that feed pellets can be discharged from the gap between the upper turning plate and the adjacent lower turning plate into the collection hopper.

[0011] Preferably, the rotating assembly includes a plurality of rotating round rods rotatably mounted on the frame. The rotating round rods are fixedly connected to the side of the upward flipping plate. A connecting plate is fixedly fitted on the outer circumference of the rotating round rod. A connecting rod is hinged between the bottom ends of two adjacent connecting plates. A hydraulic cylinder is hinged on the frame. A drive plate is fixed to the end of the piston rod of the hydraulic cylinder. The drive plate is fitted and fixed on the outer circumference of one of the rotating round rods.

[0012] By adopting the above technical solution, the hydraulic cylinder is started, which drives one of the rotating rods to rotate. The rotating rod drives the connecting plate to rotate synchronously through the connecting rod, thereby driving several rotating rods to rotate synchronously.

[0013] Preferably, the discharge mechanism includes several fixed frames fixed to the frame, with a distance between adjacent fixed frames. A movable plate is slidably mounted on the frame along its length. Several movable frames are fixed at equal intervals on the bottom surface of the movable plate. A motor and a second gearbox are mounted on the frame. The output end of the motor is fixedly connected to the input end of the second gearbox. A movable shaft is fixed to the side of the movable plate, and the end of the movable shaft is coaxially fixedly connected to the output end of the second gearbox.

[0014] By adopting the above technical solution, the first motor is started, and the first motor drives the moving shaft to move through the second gearbox. The moving shaft drives the moving plate to move back and forth along the length of the frame, so that the moving frame moves to directly above the fixed frame, so that the feed pellets can fall from the gap between two adjacent fixed frames.

[0015] Preferably, the discharge mechanism includes a plurality of drive shafts rotatably mounted on the frame. A plurality of impellers are fixedly fitted on the outer circumferential surface of the drive shafts. A first sprocket and a second sprocket are fixedly fitted on the outer circumferential surface of the drive shafts. A first chain is wound around the outer circumference of the first sprocket and the adjacent second sprocket. A second motor is mounted on the frame. A drive wheel is coaxially fixed at the output end of the second motor. A second chain is wound around the outer circumference of the drive wheel and the adjacent second sprocket.

[0016] By adopting the above technical solution, motor 2 is started. Motor 2 drives the adjacent drive shaft to rotate through the drive wheel and chain 2. The drive shaft drives several drive shafts to rotate through chain 1, thereby driving multiple impellers to rotate and discharge materials. The action is gentle and does not damage the materials. The material is discharged completely without residue when the silo is cleared.

[0017] Preferably, the top surface of the air outlet is provided with an installation groove, a filter frame is installed in the installation groove, a plurality of activated carbon filter plates are installed in the filter frame, and a fixing plate is fixed to the top surface of the cooling box by bolts, the bottom surface of the fixing plate abutting against the top surface of the filter frame.

[0018] By adopting the above technical solution, the filter frame is placed in the installation slot, and the fixing plate is abutted and fixed to the filter frame with bolts. The filter frame can filter impurities in the air inside the cooling box, while the activated carbon filter plate can adsorb moisture in the air.

[0019] Preferably, a lead screw is rotatably installed inside the air outlet, and a scraper is sleeved on the outer periphery of the lead screw. The scraper is threadedly driven with the lead screw, and the side of the scraper can fit against the side of the filter frame. A motor is installed on the cooling box, and the output end of the motor is coaxially and fixedly connected to the end of the lead screw.

[0020] By adopting the above technical solution, the third motor is started, which drives the lead screw to rotate. The lead screw drives the scraper to move back and forth along the length of the filter frame, thereby scraping off the impurities adsorbed on the outer surface of the filter frame and ensuring the ventilation effect of the air outlet.

[0021] Preferably, the filter frame has receiving grooves on both sides, two connecting blocks are fixed to the side of the filter frame, and a rotating rod is rotatably installed between the two connecting blocks. A baffle is fixedly fitted around the outer periphery of the rotating rod, and the baffle can abut against the side of the filter frame. A negative pressure through hole is opened on the inner wall of the receiving groove away from the baffle. A torsion spring is fitted around the outer periphery of the rotating rod. One end of the torsion spring is fixedly connected to the baffle, and the other end of the torsion spring is fixedly connected to the connecting block. An abutting rod is fixed to the top of the rotating rod. The abutting rod is perpendicular to the baffle. Pressing rods are fixed on both sides of the scraper, and the pressing rods can abut against the abutting rods.

[0022] By adopting the above technical solution, when the scraper moves toward the direction close to the baffle, the pressing rod abuts against the abutting rod and pushes the abutting rod to rotate. The abutting rod drives the baffle to rotate through the rotating rod, so that the receiving groove opens, so that the scraper can push the impurities into the receiving groove. Since the inner wall of the receiving groove away from the baffle is provided with a negative pressure through hole, the impurities can enter the receiving groove more easily. When the scraper moves toward the direction away from the baffle, the baffle is reset under the elastic force of the torsion spring.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. High-temperature, high-humidity feed pellets are fed into the cooling chamber through a rotary feeder. The feed pellets are evenly distributed in the cooling chamber by the rotating feeder and distributor. Cold air from the outside enters the cooling chamber through the gaps in the discharge mechanism under the action of the suction system. The cold air first comes into contact with the lower-temperature feed pellets at the bottom of the cooling chamber. As the outside air flows upward, its temperature rises and it comes into contact with the higher-temperature feed pellets. This achieves contact between cold air and cold feed, and between hot air and hot feed, so that the pellets are cooled gradually in the same direction. This avoids cracking of the pellet surface caused by sudden cooling and ensures that the cooling effect of the feed is consistent. 2. A rotating assembly is used to drive several rotating plates to rotate, which in turn drive the upper and lower tilting plates to rotate, so that feed pellets can be discharged from the gap between the upper tilting plate and the adjacent lower tilting plate into the collection hopper; 3. Start motor one. Motor one drives the moving shaft to move through the second gearbox. The moving shaft drives the moving plate to move back and forth along the length of the frame, so that the moving frame moves to directly above the fixed frame, so that the feed pellets can fall from the gap between two adjacent fixed frames. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0025] Figure 2 This is a schematic diagram of the internal structure of the cooling box in Embodiment 1 of this application.

[0026] Figure 3 This is a schematic diagram of the material feeder and material distributor in Embodiment 1 of this application.

[0027] Figure 4 This is a schematic diagram of the material discharge mechanism in Embodiment 1 of this application.

[0028] Figure 5 This is a schematic diagram of the rotating plate in Embodiment 1 of this application.

[0029] Figure 6 This is a schematic diagram of the material discharge mechanism in Embodiment 2 of this application.

[0030] Figure 7 This is a schematic diagram of the structure of the fixed frame and the movable frame in Embodiment 2 of this application.

[0031] Figure 8 This is a schematic diagram of the material discharge mechanism in Embodiment 3 of this application.

[0032] Figure 9 This is a schematic diagram of the filter frame in Embodiment 4 of this application.

[0033] Figure 10 This is a schematic diagram of the scraper and baffle in Embodiment 4 of this application.

[0034] Reference numerals: 1. Frame; 11. Hopper; 12. Cooling box; 13. Rotary feeder; 14. Feeder; 15. Distributor; 16. Air outlet; 17. First gearbox; 171. Rotating shaft one; 172. Rotating shaft two; 18. Support rod; 19. Drive motor; 2. Discharge mechanism; 21. Rotating plate; 211. Upward tilting plate; 212. Downward tilting plate; 22. Rotating rod; 23. Connecting plate; 24. Connecting rod; 25. Hydraulic cylinder; 26. Drive plate; 3. Fixed frame; 31. Moving plate; 32. Moving frame; 33. Motor 1; 34. Second gearbox; 35. Moving shaft; 4. Drive shaft; 41. Impeller; 42. Sprocket 1; 43. Sprocket 2; 44. Chain 1; 45. Motor 2; 46. Drive wheel; 47. Chain 2; 5. Filter frame; 51. Activated carbon filter plate; 52. Mounting slot; 53. Fixing plate; 54. Lead screw; 55. Motor 3; 56. Receiving slot; 6. Scraper; 61. Pressing rod; 7. Rotating rod; 71. Baffle; 72. Torsion spring; 73. Connecting block; 74. Abutment rod. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0036] This application discloses a counter-flow cooler for feed production.

[0037] Example 1 Reference Figure 1 and Figure 2 The counter-flow cooler for feed production includes a frame 1, on which a hopper 11 and a cooling box 12 are fixed, with the cooling box 12 located above the hopper 11. A discharge mechanism 2 is installed between the cooling box 12 and the hopper 11, with a gap for air intake between the discharge mechanism 2 and the hopper 11. A rotary feeder 13 is installed on the top of the cooling box 12, and a feeder 14 and a feed distributor 15 are installed inside the cooling box 12. An air outlet 16 is provided on the top side of the cooling box 12, and an air suction system is installed at the air outlet 16.

[0038] Reference Figure 2 and Figure 3 Two horizontally arranged support rods 18 are fixed inside the cooling box 12, and a first gearbox 17 is fixed on the two support rods 18. A rotating shaft 171 is coaxially fixed to the top output end of the first gearbox 17, and the feeder 14 is fixedly connected to the rotating shaft 171. A rotating shaft 172 is coaxially fixed to the bottom output end of the first gearbox 17, and the feeder 15 is fixedly connected to the rotating shaft 172. A drive motor 19 is installed on the side of the cooling box 12, and the output end of the drive motor 19 is fixedly connected to the input end of the first gearbox 17.

[0039] High-temperature, high-humidity feed pellets are fed into the cooling chamber 12 via a rotary feeder 13. The feed pellets are evenly distributed within the cooling chamber 12 by the rotating feeder 14 and the distributor 15. Outside cold air enters the cooling chamber 12 through the gaps in the discharge mechanism 2 under the action of the suction system. The cold air preferentially contacts the lower-temperature feed pellets at the bottom of the cooling chamber 12. As the outside air flows upward, its temperature continuously rises and it comes into contact with the higher-temperature feed pellets. This achieves contact between cold air and cold feed, and between hot air and hot feed, which can cool the pellets with a temperature of 70℃~90℃ to slightly above room temperature by 3℃~6℃ and reduce the moisture content to a safe level (≤12.5%), facilitating the transportation, storage, and handling of the pellets.

[0040] Reference Figure 4 and Figure 5The material discharge mechanism 2 includes several rotating plates 21 rotatably mounted on the frame 1. Each rotating plate 21 includes an upward-tilting plate 211, and a downward-tilting plate 212 is fixed to the bottom surface of the upward-tilting plate 211. There is a distance between adjacent upward-tilting plates and adjacent downward-tilting plates, and the bottom surface of the upward-tilting plate 211 can be in contact with the top surface of the adjacent downward-tilting plate 212. Several rotating rods 22 are rotatably mounted on the frame 1, and the rotating rods 22 are fixedly connected to the side surfaces of the upward-tilting plates 211. A connecting plate 23 is fixedly fitted onto the outer circumference of the rotating rod 22, and a connecting rod 24 is hinged between the bottom ends of adjacent connecting plates 23. A hydraulic cylinder 25 is hinged to the frame 1, and a drive plate 26 is fixed to the end of the piston rod of the hydraulic cylinder 25. The drive plate 26 is fitted and fixed to the outer circumference of one of the rotating rods 22.

[0041] The implementation principle of Embodiment 1 of this application is as follows: High-temperature and high-humidity feed pellets are fed into the cooling box 12 through the rotary feeder 13. The feed pellets are evenly distributed in the cooling box 12 under the action of the rotating feeder 14 and the feed distributor 15. The outside cold air enters the cooling box 12 through the gap of the discharge mechanism 2 under the action of the suction system. The cold air first contacts the feed pellets with lower temperature at the bottom of the cooling box 12. As the outside air flows upward, its temperature continuously rises and contacts the feed pellets with higher temperature. This achieves contact between cold air and cold feed, and between hot air and hot feed, so that the pellets are gradually cooled in the same direction, avoiding cracking of the pellet surface caused by sudden cooling, and thus ensuring that the cooling effect of the feed is consistent.

[0042] Example 2 Reference Figure 6 and Figure 7 The difference between this embodiment and Embodiment 1 is that the material discharge mechanism 2 includes several fixed frames 3 fixed to the frame 1, with a distance between adjacent fixed frames 3. A movable plate 31 is slidably mounted on the frame 1 along its length, and several equally spaced movable frames 32 are fixed to the bottom surface of the movable plate 31. A motor 33 and a second gearbox 34 are mounted on the frame 1, and the output end of the motor 33 is fixedly connected to the input end of the second gearbox 34. A movable shaft 35 is fixed to the side of the movable plate 31, and the end of the movable shaft 35 is coaxially fixedly connected to the output end of the second gearbox 34.

[0043] The implementation principle of Embodiment 2 of this application is as follows: Start motor 33, motor 33 drives moving shaft 35 to move through second gearbox 34, moving shaft 35 drives moving plate 31 to move back and forth along the length of frame 1, so that moving frame 32 moves to directly above fixed frame 3, so that feed pellets can fall from the gap between two adjacent fixed frames 3.

[0044] Example 3 Reference Figure 8The difference between this embodiment and Embodiment 1 is that the discharge mechanism 2 includes several drive shafts 4 rotatably mounted on the frame 1, and several impellers 41 are fixedly fitted onto the outer circumference of the drive shafts 4. A first sprocket 42 and a second sprocket 43 are fixedly fitted onto the outer circumference of the drive shafts 4, and a first chain 44 is wound around the outer circumference of the first sprocket 42 and the adjacent second sprocket 43. A second motor 45 is mounted on the frame 1, and a drive wheel 46 is coaxially fixed to the output end of the second motor 45. A second chain 47 is wound around the outer circumference of the drive wheel 46 and the adjacent second sprocket 43.

[0045] The implementation principle of Embodiment 3 of this application is as follows: Start motor 2 45, motor 2 45 drives the adjacent drive shaft 4 to rotate through drive wheel 46 and chain 2 47. The drive shaft 4 drives several drive shafts 4 to rotate through chain 1 44, thereby driving multiple impellers 41 to rotate and discharge materials. The action is gentle and does not damage the materials. The material is discharged completely without residue when the silo is cleared.

[0046] Example 4 Reference Figure 9 and Figure 10 The difference between this embodiment and Embodiment 1 is that an installation groove 52 is provided on the top surface of the air outlet 16, and a filter frame 5 is installed in the installation groove 52. Several activated carbon filter plates 51 are installed in the filter frame 5. A fixing plate 53 is bolted to the top surface of the cooling box 12, and the bottom surface of the fixing plate 53 abuts against the top surface of the filter frame 5. A lead screw 54 is rotatably installed in the air outlet 16, and a scraper 6 is sleeved on the outer periphery of the lead screw 54. The scraper 6 and the lead screw 54 are threadedly connected, and the side of the scraper 6 can fit against the side of the filter frame 5. A motor 55 is installed on the cooling box 12, and the output end of the motor 55 is coaxially and fixedly connected to the end of the lead screw 54.

[0047] Start motor 3 55, which drives lead screw 54 to rotate. Lead screw 54 drives scraper 6 to move back and forth along the length of filter frame 5, thereby scraping off the impurities adsorbed on the outer surface of filter frame 5 and ensuring the ventilation effect of air outlet 16.

[0048] Reference Figure 9 and Figure 10 The filter frame 5 has receiving grooves 56 on both sides, and negative pressure through holes are formed on the inner wall of the receiving grooves 56 away from the baffle 71. Two connecting blocks 73 are fixed to the side of the filter frame 5, and a rotating rod 7 is rotatably installed between the two connecting blocks 73. A baffle 71 is fixedly fitted around the outer periphery of the rotating rod 7, and the baffle 71 can abut against the side of the filter frame 5. A torsion spring 72 is fitted around the outer periphery of the rotating rod 7, one end of the torsion spring 72 is fixedly connected to the baffle 71, and the other end of the torsion spring 72 is fixedly connected to the connecting block 73. An abutting rod 74 is fixed to the top of the rotating rod 7, and the abutting rod 74 is set perpendicular to the baffle 71. A pressing rod 61 is fixed on both sides of the scraper 6, and the pressing rod 61 can abut against the abutting rod 74.

[0049] The implementation principle of Embodiment 4 of this application is as follows: When the scraper 6 moves toward the direction close to the baffle 71, the pressing rod 61 abuts against the abutting rod 74 and pushes the abutting rod 74 to rotate. The abutting rod 74 drives the baffle 71 to rotate through the rotating rod 7, so that the receiving groove 56 opens, so that the scraper 6 can push the impurities into the receiving groove 56. Since the inner wall of the receiving groove 56 away from the baffle 71 is provided with a negative pressure through hole, the impurities can enter the receiving groove 56 more easily. When the scraper 6 moves toward the direction away from the baffle 71, the baffle 71 is reset under the elastic force of the torsion spring 72.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A counter-flow cooler for feed production, characterized in that: The device includes a frame (1), on which a hopper (11) and a cooling box (12) are installed. A discharge mechanism (2) is installed between the cooling box (12) and the hopper (11). A gap for air intake is provided between the discharge mechanism (2) and the hopper (11). A rotary feeder (13) is installed on the top of the cooling box (12). A rake (14) and a distributor (15) are installed inside the cooling box (12). An air outlet (16) is provided on the top side of the cooling box (12). A suction system is provided at the air outlet (16). A drive assembly for driving the rake (14) and the distributor (15) to rotate is provided inside the cooling box (12). The drive assembly includes a first gearbox (17) fixed inside the cooling box (12). A rotating shaft (171) is coaxially fixed to the top output end of the first gearbox (17). The rake (14) is fixedly connected to the rotating shaft (171). A rotating shaft (172) is coaxially fixed to the bottom output end of the first gearbox (17). The cloth feeder (15) is fixedly connected to the rotating shaft (172). A drive motor (19) is installed on the side of the cooling box (12). The output end of the drive motor (19) is fixedly connected to the input end of the first gearbox (17). The top surface of the air outlet (16) is provided with an installation groove (52), a filter frame (5) is installed in the installation groove (52), and a number of activated carbon filter plates (51) are installed in the filter frame (5). The top surface of the cooling box (12) is fixed with a fixing plate (53) by bolts, and the bottom surface of the fixing plate (53) abuts against the top surface of the filter frame (5). A lead screw (54) is rotatably installed inside the air outlet (16). A scraper (6) is sleeved on the outer periphery of the lead screw (54). The scraper (6) is threadedly driven to the lead screw (54). The side of the scraper (6) can fit against the side of the filter frame (5). A motor (55) is installed on the cooling box (12). The output end of the motor (55) is coaxially fixedly connected to the end of the lead screw (54). The filter frame (5) has receiving grooves (56) on both sides. Two connecting blocks (73) are fixed to the side of the filter frame (5). A rotating rod (7) is rotatably installed between the two connecting blocks (73). A baffle (71) is fixedly fitted around the outer periphery of the rotating rod (7). The baffle (71) can abut against the side of the filter frame (5). A negative pressure through hole is opened on the inner wall of the receiving groove (56) away from the baffle (71). The rotating rod (7) A torsion spring (72) is fitted around the outer periphery. One end of the torsion spring (72) is fixedly connected to the baffle (71), and the other end of the torsion spring (72) is fixedly connected to the connecting block (73). An abutment rod (74) is fixed at the top of the rotating rod (7). The abutment rod (74) is perpendicular to the baffle (71). A pressing rod (61) is fixed on both sides of the scraper (6). The pressing rod (61) can abut against the abutment rod (74).

2. The counter-flow cooler for feed production according to claim 1, characterized in that: The material discharge mechanism (2) includes several rotating plates (21) rotatably mounted on the frame (1). Each rotating plate (21) includes an upward-flipping plate (211), and a downward-flipping plate (212) is fixed to the bottom surface of the upward-flipping plate (211). The bottom surface of the upward-flipping plate (211) can be in contact with the top surface of the adjacent downward-flipping plate (212). A rotating assembly for driving several rotating plates (21) to rotate synchronously is installed on the frame (1).

3. A counter-flow cooler for feed production according to claim 2, characterized in that: The rotating assembly includes several rotating rods (22) rotatably mounted on the frame (1). The rotating rods (22) are fixedly connected to the side of the upward flipping plate (211). A connecting plate (23) is sleeved and fixed on the outer circumference of the rotating rods (22). A connecting rod (24) is hinged between the bottom ends of two adjacent connecting plates (23). A hydraulic cylinder (25) is hinged on the frame (1). A drive plate (26) is fixed to the piston rod end of the hydraulic cylinder (25). The drive plate (26) is sleeved and fixed on the outer circumference of one of the rotating rods (22).

4. A counter-flow cooler for feed production according to claim 1, characterized in that: The material discharge mechanism (2) includes several fixed frames (3) fixed on the frame (1), with a distance between adjacent fixed frames (3). A movable plate (31) is slidably installed on the frame (1) along its own length direction. Several movable frames (32) are fixed on the bottom surface of the movable plate (31). A motor (33) and a second gearbox (34) are installed on the frame (1). The output end of the motor (33) is fixedly connected to the input end of the second gearbox (34). A movable shaft (35) is fixed on the side of the movable plate (31). The end of the movable shaft (35) is coaxially fixedly connected to the output end of the second gearbox (34).

5. A counter-flow cooler for feed production according to claim 1, characterized in that: The discharge mechanism (2) includes several drive shafts (4) rotatably mounted on the frame (1). Several impellers (41) are fixedly fitted on the outer circumferential surface of the drive shafts (4). A sprocket (42) and a sprocket (43) are fixedly fitted on the outer circumferential surface of the drive shafts (4). A chain (44) is wound around the outer circumference of the sprocket (42) and the adjacent sprocket (43). A motor (45) is mounted on the frame (1). A drive wheel (46) is coaxially fixed at the output end of the motor (45). A chain (47) is wound around the outer circumference of the drive wheel (46) and the adjacent sprocket (43).

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