A continuous pre-cooling device for leafy vegetables

Abstract

The application relates to the field of vegetable preservation technology and discloses a continuous precooling device for leaf vegetables, which comprises a rack, a body fixedly connected to the top of the rack, and conveying units and overturning units rotatably arranged on the inner walls of the body respectively; the conveying unit comprises a first main roller, the two ends of the first main roller are rotatably connected to the inner walls of the body, the inner walls of the body are rotatably connected with a first slave roller, a second main roller and a second slave roller respectively, and the circumferential outer surfaces of the first main roller and the first slave roller are commonly connected with a first conveying belt through transmission. The continuous precooling device for leaf vegetables can effectively solve the problem that, in the prior art, the bottom of the leaf vegetables is in contact with the conveying belt, the top is exposed to cold air, the precooling speeds of the upper and lower parts of the vegetables are inconsistent, the top is precooled fast, the bottom is precooled slow, the precooling process of the leaf vegetables is uneven, and the precooling efficiency is low.

Description

Technical Field

[0001] This invention relates to the field of vegetable preservation technology, specifically to a continuous pre-cooling device for leafy vegetables. Background Technology

[0002] Vegetable precooling refers to a technical measure that involves rapidly lowering the temperature of vegetables to a suitable low temperature range after harvesting and before they enter cold chain logistics or storage. This slows down metabolism, reduces respiration and water evaporation, and inhibits microbial growth, thereby extending shelf life and maintaining quality. Leafy vegetables are conveyed to the top conveyor belt of the precooling box via an lifting device. The leafy vegetables move forward continuously under the drive of the conveyor belt. At the same time, humidified cold air flows through the air outlet to cool the leafy vegetables. When the leafy vegetables reach the end of the conveyor belt, they fall to the next conveyor belt and continue to be cooled. This process is repeated several times until the precooling of the leafy vegetables is completed. During the precooling process, the cold air is reused, saving energy consumption.

[0003] Currently, during the conveyor belt transport of leafy vegetables, it is difficult to flip them over. The bottom of the leafy vegetables is in contact with the conveyor belt, while the top is directly exposed to the cold air. This positional difference leads to inconsistent pre-cooling speeds between the upper and lower parts of the vegetables, with the top pre-cooling faster and the bottom pre-cooling slower. As a result, the pre-cooling process of leafy vegetables is not uniform and the pre-cooling efficiency is low. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a continuous precooling device for leafy vegetables, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a continuous precooling device for leafy vegetables, comprising:

[0007] A frame, the top of which is fixedly connected to an organism, and the inner wall of the organism is rotatably provided with a conveying unit and a flipping unit;

[0008] The conveying unit includes a first main roller, both ends of which are rotatably connected to the inner wall of the machine body. The inner wall of the machine body is rotatably connected to a first secondary roller, a second main roller, and a second secondary roller. The outer circumferential surfaces of the first main roller and the first secondary roller are jointly driven and sleeved with a first conveyor belt. The outer circumferential surfaces of the second main roller and the second secondary roller are jointly driven and sleeved with a second conveyor belt.

[0009] The flipping unit includes a main shaft, one end of which is rotatably connected to the inner wall of the machine body. A cross ring plate is fixedly connected to the end of the main shaft away from the machine body. A roller is fixedly connected to the outer circumference of the cross ring plate. A receiving hopper is fixedly connected to the outer circumference of the roller. A fan-shaped sleeve plate is fixedly connected to one side of the receiving hopper. A sealing plate is provided on the side of the fan-shaped sleeve plate away from the receiving hopper. After the sealing plate is installed, it can rotate around the main shaft within a specified angle range.

[0010] Furthermore, the top of the machine body is provided with a feed inlet, one side of the machine body is provided with a discharge outlet, the inner wall of the machine body is fixedly connected with a blower plate, and the inner wall of the machine body is fixedly connected with a feed ramp and a discharge ramp respectively.

[0011] Furthermore, an arc-shaped telescopic cylinder is fixedly connected to the side of the receiving hopper near the fan-shaped sleeve plate, and an arc-shaped telescopic rod is fixedly connected to the side of the sealing plate near the fan-shaped sleeve plate. The arc-shaped telescopic rod is slidably connected inside the arc-shaped telescopic cylinder.

[0012] Furthermore, a rotating shaft is rotatably connected to the side of the cross ring plate near the main shaft. Four rotating shafts are arranged in a circumferential array on one side of the cross ring plate. A lever is fixedly connected to the outer circumferential surface of each of the four rotating shafts. Four receiving hoppers, fan-shaped sleeves, and sealing plates are arranged in a circumferential array on the outer circumferential surface of the drum. A lever is rotatably connected to both sides of each of the four sealing plates. A lever is provided with a lever hole at the end away from the rotating shaft. The lever is slidably connected inside the lever hole.

[0013] Furthermore, a gear is fixedly connected to the outer circumference of the rotating shaft, a fixing ring is fixedly connected to the inner wall of the machine body, the inner wall of the fixing ring is provided with a first tooth, and a second tooth block is fixedly connected to the inner wall of the machine body;

[0014] Wherein, after the rotating shaft rotates around the main shaft to a specified angle, the gear engages internally with the first tooth; after the rotating shaft rotates around the main shaft to another specified angle, the gear engages externally with the second tooth block; during the rotation of the rotating shaft, the gear rotation angle caused by the first tooth is the same as the gear rotation angle caused by the second tooth block.

[0015] Furthermore, a hexagonal arc block is fixedly connected to the outer circumference of the rotating shaft, and a first arc strip and a second arc strip are fixedly connected to the side of the fixing ring strip away from the machine body, respectively;

[0016] During the rotation of the rotating shaft around the main shaft, the rotating shaft drives the hexagonal arc block to slide along the inner arc surfaces of the first and second arc strips in sequence.

[0017] Furthermore, a receiving inclined plate is fixedly connected to the inner wall of the machine body, and the receiving inclined plate is located between the conveying unit and the flipping unit.

[0018] Furthermore, the inner wall of the machine body is fixedly connected with a first baffle and a second baffle, respectively. There are two first baffles located on both sides of the first conveyor belt, and there are two second baffles located on both sides of the second conveyor belt.

[0019] Furthermore, a drive motor is fixedly connected to the outer surface of the machine body, the output end of the drive motor is fixedly connected to the first main roller, a first transmission belt is sleeved between the first main roller and the first slave roller, a second transmission belt is sleeved between the first slave roller and the main shaft, a third transmission belt is sleeved between the main shaft and the second main roller, and a fourth transmission belt is sleeved between the second main roller and the second slave roller.

[0020] Furthermore, the inner wall of the machine body is rotatably equipped with a conveyor belt.

[0021] The technical solution provided by this invention has the following advantages compared with the prior art:

[0022] This invention controls the rotation of the main shaft around its own axis, which drives the rotation of the cross ring plate. The cross ring plate, through a roller, drives four receiving hoppers to rotate cyclically around the axis of the main shaft. Simultaneously, the cross ring plate drives four rotating shafts to revolve around the axis of the main shaft. During the revolution of the rotating shafts around the axis of the main shaft, the rotating shafts first drive the lever to rotate the lever wheel and the sealing plate around the axis of the roller, and the sealing plate closes the open receiving hopper. After the rotating shafts have revolved around the axis of the main shaft for a certain angle, the rotating shafts drive the lever to rotate the lever wheel and the sealing plate around the axis of the roller, and the sealing plate opens the closed receiving hopper. Leafy vegetables move along the upper surface of the sealing plate to the second conveyor belt, thereby completing the turning operation of leafy vegetables, improving the uniformity of leafy vegetables in the pre-cooling process, protecting the quality of vegetables, and improving the efficiency of the entire pre-cooling process. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the conveying unit according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the first baffle bar in an embodiment of the present invention;

[0027] Figure 4 This is a right-side view of the conveyor belt structure according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the second conveyor belt according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the receiving hopper according to an embodiment of the present invention;

[0030] Figure 7 This is a right-side view of the gear structure according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the gear structure from the left side in an embodiment of the present invention;

[0032] Figure 9 This is a right-view structural diagram of the hexagonal arc block according to an embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the arc-shaped telescopic cylinder according to an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the main shaft in an embodiment of the present invention.

[0035] The labels in the diagram represent: 1. Frame; 11. Machine body; 12. Feed inlet; 121. Feed ramp; 13. Discharge outlet; 131. Discharge ramp; 14. Air blowing plate; 2. Conveying unit; 21. First main roller; 22. First driven roller; 23. First conveyor belt; 24. Second main roller; 25. Second driven roller; 26. Second conveyor belt; 3. Tilting unit; 31. Main shaft; 32. Cross ring plate; 33. Drum; 34. Receiving hopper; 35. Sector-shaped sleeve plate; 36. Sealing plate; 361. 362. Arc-shaped telescopic cylinder; 4. Arc-shaped telescopic rod; 4. Rotating shaft; 41. Pulley; 42. Pulley wheel; 43. Pulley hole; 44. Gear; 45. Fixing ring; 46. First tooth; 47. Second tooth block; 48. Hexagonal arc block; 481. First arc strip; 482. Second arc strip; 5. Receiving inclined plate; 61. First stop bar; 62. Second stop bar; 7. Drive motor; 71. First transmission belt; 72. Second transmission belt; 73. Third transmission belt; 74. Fourth transmission belt; 8. Conveyor bottom belt. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] The present invention will be further described below with reference to embodiments.

[0038] Example:

[0039] Please see Figures 1-11 This invention provides a technical solution: a continuous precooling device for leafy vegetables, comprising:

[0040] The frame 1 has a body 11 fixedly connected to its top, and the inner wall of the body 11 is rotatably equipped with a conveying unit 2 and a tilting unit 3.

[0041] The conveying unit 2 includes a first main roller 21, both ends of which are rotatably connected to the inner wall of the machine body 11. The inner wall of the machine body 11 is rotatably connected to a first slave roller 22, a second main roller 24, and a second slave roller 25. The outer circumferential surfaces of the first main roller 21 and the first slave roller 22 are connected to a first conveyor belt 23, and the outer circumferential surfaces of the second main roller 24 and the second slave roller 25 are connected to a second conveyor belt 26.

[0042] The flipping unit 3 includes a main shaft 31. One end of the main shaft 31 is rotatably connected to the inner wall of the machine body 11. A cross ring plate 32 is fixedly connected to the end of the main shaft 31 away from the machine body 11. A roller 33 is fixedly connected to the outer circumference of the cross ring plate 32. A receiving hopper 34 is fixedly connected to the outer circumference of the roller 33. A fan-shaped sleeve plate 35 is fixedly connected to one side of the receiving hopper 34. A sealing plate 36 is provided on the side of the fan-shaped sleeve plate 35 away from the receiving hopper 34. After the sealing plate 36 is installed, it can rotate around the main shaft 31 within a specified angle range.

[0043] The top of the machine body 11 is provided with a feed inlet 12, and the side of the machine body 11 is provided with a discharge outlet 13. The inner wall of the machine body 11 is fixedly connected with a blower plate 14, and the inner wall of the machine body 11 is fixedly connected with a feed inclined plate 121 and a discharge inclined plate 131 respectively.

[0044] An arc-shaped telescopic cylinder 361 is fixedly connected to the side of the receiving hopper 34 near the fan-shaped sleeve plate 35, and an arc-shaped telescopic rod 362 is fixedly connected to the side of the sealing plate 36 near the fan-shaped sleeve plate 35. The arc-shaped telescopic rod 362 is slidably connected inside the arc-shaped telescopic cylinder 361.

[0045] A rotating shaft 4 is rotatably connected to the side of the cross ring plate 32 near the main shaft 31. Four rotating shafts 4 are arranged in a circumferential array on one side of the cross ring plate 32. A lever 41 is fixedly connected to the outer circumferential surface of each of the four rotating shafts 4. Four receiving hoppers 34, fan-shaped sleeves 35 and sealing plates 36 are arranged in a circumferential array on the outer circumferential surface of the roller 33. A lever 42 is rotatably connected to both sides of each of the four sealing plates 36. A lever hole 43 is opened at the end of each lever 41 away from the rotating shaft 4. The lever 42 is slidably connected inside the lever hole 43.

[0046] A gear 44 is fixedly connected to the outer circumference of the rotating shaft 4, a fixing ring 45 is fixedly connected to the inner wall of the body 11, a first tooth 46 is provided on the inner wall of the fixing ring 45, and a second tooth block 47 is fixedly connected to the inner wall of the body 11.

[0047] In this process, after the rotating shaft 4 rotates around the main shaft 31 to a specified angle, the gear 44 is internally meshed with the first tooth 46. After the rotating shaft 4 rotates around the main shaft 31 to another specified angle, the gear 44 is externally meshed with the second tooth block 47. During the rotation of the rotating shaft 4, the rotation angle of the gear 44 caused by the first tooth 46 is the same as the rotation angle of the gear 44 caused by the second tooth block 47.

[0048] A hexagonal arc block 48 is fixedly connected to the outer circumference of the rotating shaft 4, and a first arc bar 481 and a second arc bar 482 are fixedly connected to the side of the fixing ring bar 45 away from the body 11 respectively.

[0049] During the rotation of the rotating shaft 4 around the main shaft 31, the rotating shaft 4 drives the hexagonal arc block 48 to slide along the inner arc surfaces of the first arc 481 and the second arc 482 in sequence.

[0050] The inner wall of the machine body 11 is fixedly connected to a receiving inclined plate 5, which is located between the conveying unit 2 and the flipping unit 3.

[0051] The inner wall of the machine body 11 is fixedly connected with a first baffle 61 and a second baffle 62. There are two first baffles 61 and they are located on both sides of the first conveyor belt 23 respectively. There are two second baffles 62 and they are located on both sides of the second conveyor belt 26 respectively.

[0052] A drive motor 7 is fixedly connected to the outer surface of the machine body 11. The output end of the drive motor 7 is fixedly connected to the first main roller 21. A first transmission belt 71 is sleeved between the first main roller 21 and the first driven roller 22. A second transmission belt 72 is sleeved between the first driven roller 22 and the main shaft 31. A third transmission belt 73 is sleeved between the main shaft 31 and the second main roller 24. A fourth transmission belt 74 is sleeved between the second main roller 24 and the second driven roller 25.

[0053] The inner wall of the machine body 11 is equipped with a rotating conveyor belt 8.

[0054] Working principle:

[0055] The transportation process of leafy vegetables:

[0056] In practical applications, leafy vegetables are conveyed to the top of the feed inlet 12 using a lifting device. Under gravity, the leafy vegetables fall down through the feed inlet 12 onto the upper surface of the feed ramp 121. The leafy vegetables slide down the upper surface of the feed ramp 121 to the upper surface of the first conveyor belt 23. The drive motor 7 is then activated, driving the first main roller 21 to rotate on the inner wall of the machine body 11 via its output end. Under the transmission action of the first transmission belt 71, the rotating first main roller 21 drives the first driven roller 22 to rotate synchronously via the first transmission belt 71 on its outer circumference. The rotating first main roller 21 and the first driven roller 22 drive the first conveyor belt 23 on its outer circumference to circulate within the machine body 11. Under the conveying action of the first conveyor belt 23, the leafy vegetables flow smoothly down the machine body. Figure 4 As shown, the rotating first conveyor belt 23 drives the leafy vegetables on its upper surface to move from left to right, as... Figure 5 As shown, when the leafy vegetables move to the right end of the first conveyor belt 23, they move downward along the upper surface of the receiving inclined plate 5 and fall into the inside of the receiving hopper 34.

[0057] The process of turning leafy vegetables over:

[0058] In practical applications, during the rotation of the first driven roller 22 on the inner wall of the machine body 11, under the transmission action of the second transmission belt 72, the rotating first driven roller 22 drives the main shaft 31 to rotate synchronously on the inner wall of the machine body 11 via the second transmission belt 72 on its outer circumference. The rotating main shaft 31 drives the cross ring plate 32 at one end to rotate, the rotating cross ring plate 32 drives the roller 33 on its outer circumference to rotate, and the rotating roller 33 drives the four receiving hoppers 34, four fan-shaped sleeves 35 and four sealing plates 36 on its outer circumference to rotate, such as... Figure 7 As shown, the rotating cross ring plate 32 drives four rotating shafts 4 on its outer surface to revolve around the axis of the main shaft 31. The four rotating shafts 4 drive four gears 44 on their outer circumference to revolve around the axis of the main shaft 31. Among them, the uppermost gear 44 meshes with the first tooth 46. Under the meshing action of the gear 44 and the first tooth 46, the gear 44 drives the rotating shaft 4 on its inner wall to rotate around its own axis. The rotating shaft 4 drives the lever 41 on its outer circumference to rotate around the axis of the rotating shaft 4. The rotating lever 41 drives the lever wheel 42 to rotate around the axis of the drum 33 through the lever hole 43 at one end. The two rotating lever wheels 42 drive a sealing plate 36 to rotate around the axis of the drum 33 toward the receiving hopper 34, so that the uppermost sealing plate 36 is in contact with the uppermost receiving hopper 34, completing the closure of the uppermost receiving hopper 34.

[0059] As a further embodiment of the present invention, multiple arc-shaped telescopic rods 362 are slidably connected to the interior of multiple arc-shaped telescopic cylinders 361, thereby limiting the four sealing plates 36 so that all four sealing plates 36 can rotate around the axis of the roller 33. By controlling the arc-shaped telescopic rods 362 to extend outward from the interior of the arc-shaped telescopic cylinders 361, the sealing plates 36 are closed to the hopper 34. By controlling the arc-shaped telescopic rods 362 to retract inward along the arc-shaped telescopic cylinders 361, the sealing plates 36 are separated from the hopper 34 (thereby opening the hopper 34).

[0060] As a further embodiment of the present invention, after the gear 44 separates from the first tooth 46, the cross ring plate 32 continues to drive the rotating shaft 4 to revolve, such as Figure 9 As shown, the rotating shaft 4 drives the hexagonal arc block 48 on its outer circumference to revolve around the axis of the main shaft 31. The revolving rotating shaft 4 drives the hexagonal arc block 48 to slide along the second arc strip 482. Under the cooperative limiting action of the hexagonal arc block 48 and the second arc strip 482, the rotating shaft 4 is limited (preventing the rotating shaft 4 from rotating around its own axis), thereby ensuring that the sealing plate 36 and the receiving hopper 34 always remain in contact, preventing leafy vegetables from being thrown out of the receiving hopper 34.

[0061] As a further embodiment of the present invention, the closed receiving hopper 34 rotates around the axis of the main shaft 31. When the side of the sealing plate 36 that is in contact with it is in a horizontal state, the receiving hopper 34 is located directly above the sealing plate 36, completing the turning operation of the leafy vegetables inside the receiving hopper 34. The cross ring plate 32 continues to drive the rotating shaft 4 to revolve. The rotating shaft 4 drives the hexagonal arc block 48 on its outer circumference to separate from the second arc strip 482, releasing the second arc strip 482 from limiting the rotating shaft 4. The rotating shaft 4 drives the gear 44 on its outer circumference to mesh with the second tooth block 47. Under the meshing action of the gear 44 and the second tooth block 47, the gear 44 drives the rotating shaft 4 on its inner wall to rotate around its own axis. The rotating shaft 4 drives the lever 41 on its outer circumference to rotate around the axis of the shaft 4. The rotating lever 41 drives the actuating wheel 42 to rotate around the axis of the drum 33 through the actuating hole 43 at one end. The two rotating actuating wheels 42 drive the sealing plate 36 to rotate downward around the axis of the drum 33. At this time, the downward rotation speed of the sealing plate 36 is greater than the downward rotation speed of the receiving hopper 34, thereby opening the receiving hopper 34. Under the action of gravity and centrifugal force, the leafy vegetables slide down along the upper surface of the sealing plate 36 to the upper surface of the second conveyor belt 26. At this time, the upper and lower surfaces of the leafy vegetables on the upper surface of the second conveyor belt 26 are opposite to those on the upper surface of the first conveyor belt 23 (completing the flipping operation of the leafy vegetables).

[0062] As a further embodiment of the present invention, after the gear 44 revolving around the main shaft 31 separates from the second tooth block 47, the cross ring plate 32 continues to drive the rotating shaft 4 to revolve. Figure 9 As shown, the rotating shaft 4 drives the hexagonal arc block 48 on its outer circumference to revolve around the axis of the main shaft 31. The revolving rotating shaft 4 drives the hexagonal arc block 48 to slide along the first arc strip 481. Under the cooperative limiting action of the hexagonal arc block 48 and the first arc strip 481, the rotating shaft 4 is limited (preventing the rotating shaft 4 from rotating around its own axis), thereby ensuring that the sealing plate 36 and the receiving hopper 34 are always kept open. The rotating main shaft 31 drives the open receiving hopper 34 to rotate towards the receiving inclined plate 5. After the sealing plate 36, which is separated from the receiving hopper 34, rotates to the top of the receiving inclined plate 5, the open receiving hopper 34 is located below the receiving inclined plate 5. The leafy vegetables on the receiving inclined plate 5 fall downward into the inside of the receiving hopper 34.

[0063] As a further embodiment of the present invention, during the rotation of the main shaft 31 on the inner wall of the machine body 11, under the transmission action of the third transmission belt 73, the main shaft 31 drives the second main roller 24 to rotate synchronously. Under the transmission action of the fourth transmission belt 74, the second main roller 24 drives the second driven roller 25 to rotate synchronously. The rotating second main roller 24 and the second driven roller 25 drive the second conveyor belt 26 on their outer circumference to circulate inside the machine body 11. Under the conveying action of the second conveyor belt 26, such as... Figure 4 As shown, the rotating second conveyor belt 26 drives the leafy vegetables on its upper surface to move from left to right. When the leafy vegetables move to the right end of the second conveyor belt 26, they fall downward onto the conveyor unit 2 below.

[0064] As a further embodiment of the present invention, multiple conveying units 2 and multiple flipping units 3 are arranged on the inner wall of the machine body 11. When leafy vegetables move on two adjacent conveying units 2, the leafy vegetables are flipped over, thus completing multiple flipping operations. By using a blower plate 14 to blow cold air into the leafy vegetables inside the machine body 11, the leafy vegetables inside the machine body 11 are pre-cooled. During the pre-cooling process, the cold air is reused, saving pre-cooling energy. Moreover, by flipping the leafy vegetables multiple times, the uniformity of the pre-cooling process is improved, protecting the quality of the vegetables. Both the top and bottom surfaces of the vegetables can come into contact with the cold air more quickly, and the pre-cooling speed is significantly improved. Vegetables that originally required a long time to reach the target temperature can complete the pre-cooling process in a shorter time under the action of flipping, thereby improving the efficiency of the entire pre-cooling process. The improvement of pre-cooling efficiency means that more vegetables can be processed in the same amount of time, which helps to fully utilize the capacity of the pre-cooling equipment, improve the utilization rate of the equipment, and reduce the pre-cooling cost per unit of vegetables.

[0065] As a further embodiment of the present invention, by employing a first baffle 61 and a second baffle 62, the leafy vegetables on the conveying unit 2 are blocked to prevent them from slipping off the sides of the first conveyor belt 23 and the second conveyor belt 26, thereby reducing the loss of the leafy vegetables. By employing a conveyor bottom belt 8, the conveyor bottom belt 8 conveys the pre-cooled leafy vegetables to the discharge inclined plate 131, so that the leafy vegetables are discharged from the discharge port 13 through the discharge inclined plate 131.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous precooling device for leafy vegetables, characterized in that, include: A frame (1) is fixedly connected to an organic body (11) on its top. The inner wall of the organic body (11) is rotatably provided with a conveying unit (2) and a flipping unit (3). The conveying unit (2) includes a first main roller (21), both ends of which are rotatably connected to the inner wall of the machine body (11). The inner wall of the machine body (11) is rotatably connected to a first slave roller (22), a second main roller (24), and a second slave roller (25). The outer circumferential surfaces of the first main roller (21) and the first slave roller (22) are connected to a first conveyor belt (23) through a common transmission. The outer circumferential surfaces of the second main roller (24) and the second slave roller (25) are connected to a second conveyor belt (26) through a common transmission. The flipping unit (3) includes a main shaft (31), one end of which is rotatably connected to the inner wall of the machine body (11). A cross ring plate (32) is fixedly connected to the end of the main shaft (31) away from the machine body (11). A roller (33) is fixedly connected to the outer circumference of the cross ring plate (32). A receiving hopper (34) is fixedly connected to the outer circumference of the roller (33). A fan-shaped sleeve plate (35) is fixedly connected to one side of the receiving hopper (34). A sealing plate (36) is provided on the side of the fan-shaped sleeve plate (35) away from the receiving hopper (34). After the sealing plate (36) is installed, it can rotate around an axis parallel to the main shaft (31) within a specified angle range. The receiving hopper (34) is fixedly connected to an arc-shaped telescopic cylinder (361) on the side near the fan-shaped sleeve plate (35), and the sealing plate (36) is fixedly connected to an arc-shaped telescopic rod (362) on the side near the fan-shaped sleeve plate (35). The arc-shaped telescopic rod (362) is slidably connected inside the arc-shaped telescopic cylinder (361). The cross ring plate (32) is rotatably connected to a rotating shaft (4) on the side near the main shaft (31). Four rotating shafts (4) are arranged in a circular array on one side of the cross ring plate (32). A lever (41) is fixedly connected to the outer circumference of each of the four rotating shafts (4). The receiving hopper (34), the fan-shaped sleeve plate (35), and the sealing plate (36) are respectively arranged in a circular array on the outer circumference of the roller (33). A lever (42) is rotatably connected to both sides of each of the four sealing plates (36). A lever (41) is provided with a lever hole (43) at the end away from the rotating shaft (4). The lever (42) is slidably connected inside the lever hole (43). A gear (44) is fixedly connected to the outer circumference of the rotating shaft (4), a fixing ring (45) is fixedly connected to the inner wall of the body (11), a first tooth (46) is provided on the inner wall of the fixing ring (45), and a second tooth block (47) is fixedly connected to the inner wall of the body (11). Wherein, after the rotating shaft (4) rotates around the main shaft (31) to a specified angle, the gear (44) is internally meshed with the first tooth (46). After the rotating shaft (4) rotates around the main shaft (31) to another specified angle, the gear (44) is externally meshed with the second tooth block (47). During the rotation of the rotating shaft (4), the rotation angle of the gear (44) driven by the first tooth (46) is the same as the rotation angle of the gear (44) driven by the second tooth block (47). A hexagonal arc block (48) is fixedly connected to the outer circumference of the rotating shaft (4), and a first arc strip (481) and a second arc strip (482) are fixedly connected to the side of the fixed ring strip (45) away from the body (11). During the rotation of the rotating shaft (4) around the main shaft (31), the rotating shaft (4) drives the hexagonal arc block (48) to slide along the inner arc surfaces of the first arc strip (481) and the second arc strip (482) in sequence.

2. The continuous precooling equipment for leafy vegetables according to claim 1, characterized in that: The top of the machine body (11) is provided with a feed inlet (12), and the side of the machine body (11) is provided with a discharge outlet (13). The inner wall of the machine body (11) is fixedly connected with a blower plate (14), and the inner wall of the machine body (11) is fixedly connected with a feed inclined plate (121) and a discharge inclined plate (131).

3. The continuous precooling equipment for leafy vegetables according to claim 1, characterized in that: The inner wall of the machine body (11) is fixedly connected to a receiving inclined plate (5), which is located between the conveying unit (2) and the flipping unit (3).

4. The continuous precooling equipment for leafy vegetables according to claim 3, characterized in that: The inner wall of the machine body (11) is fixedly connected with a first baffle (61) and a second baffle (62). There are two first baffles (61) and they are located on both sides of the first conveyor belt (23). There are two second baffles (62) and they are located on both sides of the second conveyor belt (26).

5. The continuous precooling equipment for leafy vegetables according to claim 4, characterized in that: A drive motor (7) is fixedly connected to the outer surface of the machine body (11). The output end of the drive motor (7) is fixedly connected to the first main roller (21). A first transmission belt (71) is connected between the first main roller (21) and the first slave roller (22). A second transmission belt (72) is connected between the first slave roller (22) and the main shaft (31). A third transmission belt (73) is connected between the main shaft (31) and the second main roller (24). A fourth transmission belt (74) is connected between the second main roller (24) and the second slave roller (25).

6. The continuous precooling equipment for leafy vegetables according to claim 5, characterized in that: The inner wall of the machine body (11) is rotatably equipped with a conveyor belt (8).

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