Aquatic product freezing and refrigerating storage equipment and freezing and refrigerating method thereof

Abstract

The invention relates to the technical field of aquatic product freezing, in particular to aquatic product freezing and refrigerating storage equipment and a freezing and refrigerating method.The aquatic product freezing and refrigerating storage equipment comprises a refrigerator shell, a first fixing plate is fixedly connected to the inner wall of one side of the top of the refrigerator shell, and a first conveyor is installed on the outer wall of the top end of the first fixing plate; a second fixing plate is fixedly connected to the outer wall of the other side of the top of the refrigerator shell, a second conveyor is installed on the outer wall of the top end of the second fixing plate, and rectangular grooves are formed in the inner walls of the two sides of the refrigerator shell; the refrigeration mechanism is arranged in the refrigerator shell; cold air enters the refrigeration space for freezing and refrigeration treatment, through pre-cooling treatment, the temperature of aquatic products is rapidly reduced, water loss and ice crystal formation in the subsequent freezing process are reduced, the freezing efficiency is improved, the pre-cooling process and the freezing and refrigeration process are automatically switched, complexity and errors of manual operation are avoided, and the production efficiency is improved. And each stage can be accurately controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of aquatic product freezing technology, and specifically relates to an aquatic product freezing and refrigeration storage device and its freezing and refrigeration method. Background Art

[0002] Aquatic products are prone to spoilage after being caught or processed. Therefore, freezing and refrigeration technology has become a key means to ensure their quality and extend the shelf life.

[0003] The aquatic product freezing and refrigeration storage device lacks a pre-cooling link. When aquatic products directly enter a low-temperature environment, the surface quickly freezes while the internal temperature remains relatively high, exacerbating water loss and quality deterioration. Moreover, most freezing and refrigeration devices adopt a fixed air duct design and cannot dynamically adjust the air distribution according to the storage volume, resulting in energy waste or insufficient local freezing, and it is difficult to meet the freezing requirements of aquatic products at different stages. Especially in the middle and late stages of refrigeration, when the aquatic products have entered a stable frozen state, high-intensity refrigeration is still maintained, which not only increases the operating cost but also may cause over-freezing. Summary of the Invention

[0004] The purpose of the present invention is to provide an aquatic product freezing and refrigeration storage device and its freezing and refrigeration method to solve the problems raised in the above background art.

[0005] The technical solution of the present invention is: An aquatic product freezing and refrigeration storage device includes a freezer housing. One side inner wall at the top of the freezer housing is fixedly connected with a first fixing plate. The top outer wall of the first fixing plate is provided with a first conveyor. The other side outer wall at the top of the freezer housing is fixedly connected with a second fixing plate. The top outer wall of the second fixing plate is provided with a second conveyor. Rectangular grooves are formed on both inner walls of the freezer housing, and further includes; A refrigeration mechanism, which is arranged inside the freezer housing; The refrigeration mechanism includes a first rectangular frame and a second rectangular frame that are respectively slidably connected to the inner walls of the two rectangular grooves. The top outer walls of the first rectangular frame and the second rectangular frame are successively provided with a plurality of first circular holes, second circular holes, and mounting holes from top to bottom. A first rack is fixedly connected to one side inner wall of the mounting hole. The inner wall of the freezer housing is fixedly connected with an air inlet frame. A mesh frame is fixedly connected to the bottom outer wall of the air inlet frame. A plurality of air inlet holes are formed on one side outer wall of the first rectangular frame. A plurality of air return holes are formed on one side outer wall at the bottom of the second rectangular frame. The two side inner walls at the top of the freezer housing are successively fixedly connected with a first filter plate and a second filter plate from top to bottom. A plurality of fourth filter plates are fixedly connected to one side inner wall of the freezer housing. A third filter plate is fixedly connected to the other side inner wall at the bottom of the freezer housing. A chute is formed on the bottom inner wall of the freezer housing. A support plate is slidably connected to the inner wall of the chute. A third conveyor is installed on the top outer wall of the support plate.

[0006] Preferably, a plurality of rotating rods are rotatably arranged on the inner wall of the wire frame. Gears are fixedly connected to the outer walls on both sides of the rotating rod. An air guide plate is fixedly connected to the outer wall of the rotating rod. A circulating fan is installed on the bottom inner wall of the refrigerator housing. A plurality of circular holes III are formed in one side outer wall of the bottom of the first rectangular frame. The first rectangular frame and the second rectangular frame are fixedly connected to the outer wall of the support plate. A plurality of first telescopic rods are fixedly connected to the bottom inner wall of the refrigerator housing. One end of the piston rod of the first telescopic rod is fixedly connected to the bottom outer wall of the support plate. A support spring is sleeved on the outer wall of the first telescopic rod. The two ends of the support spring are respectively fixedly connected to the outer wall of the support plate and the inner wall of the refrigerator housing.

[0007] Preferably, the height of the circular hole I is adapted to that of the first filter plate, the height of the first filter plate is adapted to that of the first conveyor, and the first conveyor is located above the second conveyor.

[0008] Preferably, the height of the circular hole II is adapted to that of the second filter plate, the size of the air inlet hole is adapted to that of the fourth filter plate, the air inlet hole is located above the fourth filter plate. A plurality of through holes are formed in one side inner wall of the bottom of the refrigerator housing. The through holes are distributed in a linear array. The size of the circular hole III is adapted to that of the through holes and the third conveyor. The size of the air return hole is adapted to that of the third filter plate. The air return hole is located above the third filter plate.

[0009] Preferably, the gear meshes with the first rack. The size of the air inlet frame is adapted to that of the fourth filter plate. The size of the air guide plate is adapted to that of the wire frame. Rectangular holes are formed in the bottom outer walls of the first rectangular frame and the second rectangular frame. A connection hole is formed in the bottom inner wall of the refrigerator housing. The connection hole communicates with the rectangular holes.

[0010] Preferably, a feed port is arranged on one side outer wall of the top of the refrigerator housing. A discharge port is formed in the other side outer wall of the bottom of the refrigerator housing. A sealing plate is connected to the bottom inner wall of the discharge port through a hinge. The size of the sealing plate is adapted to that of the discharge port.

[0011] Preferably, the circular hole I, the circular hole II, the air inlet hole, the air return hole and the fourth filter plate are distributed in a linear array. A material guide plate is fixedly connected to one side inner wall of the bottom of the refrigerator housing. An inclined surface is arranged on the top outer wall of the material guide plate. The distance between the second conveyor and the refrigerator housing is adapted to the size of the inclined surface.

[0012] Preferably, one side outer wall of the bottom end of the second fixing plate is connected with a movable plate through a hinge. A plurality of second telescopic rods are fixedly connected to one side outer wall of the bottom end of the second fixing plate. One end of the piston rod of the second telescopic rod is fixedly connected to the outer wall of the bottom end of the movable plate. The second telescopic rods are arranged in an arc shape. A return spring is arranged inside the second telescopic rods. An installation groove is formed in the outer wall of the third conveyor. A plurality of rollers are rotatably arranged on the inner wall of the installation groove. A tooth groove is arranged on one side outer wall of the roller. A second rack is fixedly connected to the inner wall of the other side of the bottom of the freezer housing. The size of the second rack is adapted to that of the tooth groove. The height of the second rack is adapted to that of the roller. A plurality of annular grooves are formed in the outer wall of the roller. A plurality of air outlet holes are formed in the outer wall of the third conveyor. The roller is located above the air outlet holes.

[0013] A freezing and refrigerating method for a freezing and refrigerating storage device for aquatic products comprises the following steps: 1) A pre-cooling area is arranged at the top of the freezer housing. The aquatic products entering are pre-cooled through the first conveyor and the second conveyor, so as to rapidly reduce the temperature of the aquatic products, reduce water loss and ice crystal formation during the subsequent freezing process. 2) The aquatic products enter the refrigerating area at the bottom of the freezer housing. The aquatic products fall on the third conveyor of the support plate, applying pressure to the support plate, causing it to move downward, driving the first rectangular frame and the second rectangular frame to slide downward. The air outlet structure in the pre-cooling area is gradually blocked, while the air inlet holes and the air return holes in the refrigerating area start to coincide and are exposed, and cold air can enter the refrigerating area. 3) In the initial stage of refrigerating the aquatic products, the air inlet holes and the air return holes in the refrigerating area are completely exposed, and a large amount of cold air enters the refrigerating area at the bottom of the freezer housing, and the aquatic products are rapidly cooled and enter the frozen state. 4) In the middle and late stages of refrigerating the aquatic products, the weight of the aquatic products decreases, the support plate rises, part of the air inlet holes and the air return holes are blocked, the input amount of cold air decreases, and the freezing and refrigerating storage treatment of the aquatic products is carried out.

[0014] The present invention provides a freezing and refrigerating storage device for aquatic products and a freezing and refrigerating method thereof through improvement. Compared with the prior art, the following improvements and advantages are achieved: First, the present invention is provided with a freezer shell, a conveyor 1, a conveyor 2, a support plate, a conveyor 3, a rectangular frame 1 and a rectangular frame 2. When the aquatic product is transported by the conveyor 1 and the conveyor 2, the cold air generated by the bottom circulation fan is blown to the conveyor position through the circular holes 1 and the circular holes 2 on the rectangular frames 1 and the rectangular frames 2, so as to pre-cool the aquatic product. As the aquatic product enters the bottom refrigerated space, the support plate descends, driving the rectangular frames 1 and the rectangular frames 2 to descend, and the circular holes 1 and the circular holes 2 gradually stagger with the filter plates 1 and the filter plates 2, and the pre-cooling process ends. At the same time, the air inlet hole overlaps with the filter plate 4, and the cold air enters the refrigerated space for freezing and refrigeration. Through the pre-cooling process, the temperature of the aquatic product is quickly reduced, the water loss and ice crystal formation in the subsequent freezing process are reduced, and the freezing efficiency is improved. The automatic switching between the pre-cooling and freezing and refrigeration processes avoids the tediousness and errors of manual operation, and ensures that each stage can be accurately controlled. Second, the present invention is provided with a support plate, a gear, a rack and an air guide plate. The support plate is at the bottom, the air guide plate is in a vertical state, and the cold air is guided vertically downward to ensure the freezing and refrigeration effect of aquatic products. The weight of the aquatic products decreases, and the support plate and the conveyor three rise under the action of the telescopic rod and the support spring. The overlap of the air inlet holes is reduced, and the input amount of cold air is reduced. At the same time, the air guide plate rotates a certain angle to make the cold air flow obliquely, thereby ensuring the refrigeration effect of the aquatic products. Through the dynamic adjustment of the air guide plate, the cold air can be more evenly distributed in the refrigerated space, avoiding local temperatures that are too low or too high, and improving the uniformity of freezing. In the middle and late stages, by reducing the input amount of cold air, over-freezing is avoided, energy is saved, and operating costs are reduced; Thirdly, the present invention is provided with filter plate 1, filter plate 2, filter plate 3, support plate, conveyor 3 and rollers, and through multiple filtering and diversion designs, cold air can more effectively contact the aquatic products, further improving the freezing effect, and the aquatic products that have been entering the refrigerated space from the left side of the freezer shell are transported to the right side and are blocked and limited by the right side of the freezer shell, ensuring that the aquatic products are evenly stored and prevented from being blocked, and also facilitating the transportation and unloading of the aquatic products; Fourthly, the present invention is provided with a roller, a rack, a second rack and an air outlet. When the roller on the conveyor three moves to the position of the second rack, the tooth groove of the roller meshes with the second rack. The roller moved to the position of the second rack will rotate under the action of the second rack, so that the aquatic products stuck to the roller are separated, preventing the sticking from affecting the refrigeration effect of the aquatic products, and also facilitating the unloading of materials. An annular groove is provided on the outer wall of the roller, which just corresponds to the position of the air outlet, so as to further improve the output effect of the cold air and enhance the freezing and refrigeration efficiency of the aquatic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a front view of the overall structure section of the present invention; Figure 2 is the overall structural sectional side view of the present invention; Figure 3 is the sectional side view of the freezer housing of the present invention; Figure 4 is of the present invention Figure 1 schematic enlarged view of structure A therein; Figure 5 is the schematic diagram of conveyor 1 and conveyor 2 of the present invention; Figure 6 is the schematic diagram of rectangular frame 1 of the present invention; Figure 7 is the schematic diagram of rectangular frame 2 of the present invention; Figure 8 is the schematic diagram of the mesh frame of the present invention; Figure 9 is the schematic diagram of conveyor 3 of the present invention; Figure 10 is the sectional schematic diagram of rectangular frame 1 and conveyor 3 of the present invention.

[0016] Explanation of reference numerals: 1, freezer housing; 2, fixing plate 1; 3, conveyor 1; 4, fixing plate 2; 5, conveyor 2; 6, feed inlet; 7, filter plate 1; 8, filter plate 2; 9, material guiding plate; 10, air inlet frame; 11, mesh frame; 12, filter plate 3; 13, conveyor 3; 14, support plate; 15, telescopic rod 1; 16, support spring; 17, circulation fan; 18, filter plate 4; 19, rectangular frame 1; 20, rectangular frame 2; 21, through hole; 22, movable plate; 23, telescopic rod 2; 24, circular hole 1; 25, circular hole 2; 26, air inlet hole; 27, mounting hole; 28, rack 1; 29, return air hole; 30, circular hole 3; 31, gear; 32, rotating rod; 33, air guiding plate; 34, roller; 35, rack 2; 36, tooth groove; 37, air outlet hole. Detailed implementation manners

[0017] The present invention will be described in detail below. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] The present invention provides a frozen and refrigerated storage device for aquatic products and its freezing and refrigerating method by improvement. The technical solution of the present invention is as follows: As Figures 1 - 10As shown in the figure, an aquatic product freezing and refrigerating storage device includes a freezer housing 1. On one inner wall of the top of the freezer housing 1, a first fixing plate 2 is fixedly connected. On the outer wall of the top of the first fixing plate 2, a first conveyor 3 is installed. On the outer wall of the other side of the top of the freezer housing 1, a second fixing plate 4 is fixedly connected. On the outer wall of the top of the second fixing plate 4, a second conveyor 5 is installed. Rectangular grooves are provided on both inner walls of the freezer housing 1. It also includes; A refrigerating mechanism, which is arranged inside the freezer housing 1; The refrigerating mechanism includes a first rectangular frame 19 and a second rectangular frame 20 that are respectively slidably connected to the inner walls of the two rectangular grooves. On the outer walls of the tops of the first rectangular frame 19 and the second rectangular frame 20, a number of first circular holes 24, second circular holes 25 and mounting holes 27 are successively provided from top to bottom. On one inner wall of the mounting hole 27, a first rack 28 is fixedly connected. On the inner wall of the freezer housing 1, an air inlet frame 10 is fixedly connected. On the outer wall of the bottom of the air inlet frame 10, a mesh frame 11 is fixedly connected. On one outer wall of the first rectangular frame 19, a number of air inlet holes 26 are provided. On one outer wall of the bottom of the second rectangular frame 20, a number of air return holes 29 are provided. On the two inner walls of the top of the freezer housing 1, a first filter plate 7 and a second filter plate 8 are successively fixedly connected from top to bottom. On one inner wall of the freezer housing 1, a number of fourth filter plates 18 are fixedly connected. On the other inner wall of the bottom of the freezer housing 1, a third filter plate 12 is fixedly connected. A chute is provided on the bottom inner wall of the freezer housing 1. Inside the chute, a support plate 14 is slidably connected. On the outer wall of the top of the support plate 14, a third conveyor 13 is installed.

[0019] Further, several rotating rods 32 are rotatably arranged on the inner wall of the frame 11. Gear 31 is fixedly connected to the outer walls on both sides of the rotating rod 32. Air guide plate 33 is fixedly connected to the outer wall of the rotating rod 32. Circulating fan 17 is installed on the bottom inner wall of the freezer housing 1. Several circular holes three 30 are provided on the outer wall of one side of the bottom of the rectangular frame one 19. The rectangular frame one 19 and the rectangular frame two 20 are fixedly connected to the outer wall of the support plate 14. Several telescopic rods one 15 are fixedly connected to the bottom inner wall of the freezer housing 1. One end of the piston rod of the telescopic rod one 15 is fixedly connected to the bottom outer wall of the support plate 14. A support spring 16 is sleeved on the outer wall of the telescopic rod one 15. Both ends of the support spring 16 are fixedly connected to the outer wall of the support plate 14 and the inner wall of the freezer housing 1 respectively. The height of the circular hole one 24 is adapted to that of the filter plate one 7. The height of the filter plate one 7 is adapted to that of the conveyor one 3. The conveyor one 3 is located above the conveyor two 5. The height of the circular hole two 25 is adapted to that of the filter plate two 8. The size of the air inlet hole 26 is adapted to that of the filter plate four 18. The air inlet hole 26 is located above the filter plate four 18. Several through holes 21 are provided on the inner wall of one side of the bottom of the freezer housing 1. The through holes 21 are arranged in a linear array. The size of the circular hole three 30 is adapted to that of the through holes 21 and the conveyor three 13. The size of the air return hole 29 is adapted to that of the filter plate three 12. The air return hole 29 is located above the filter plate three 12. When aquatic products enter the refrigerated space for freezing storage, the conveyor three 13 is started, and the aquatic products that have been entering the refrigerated space from the left side of the freezer housing 1 are conveyed to the right side and blocked and limited by the right side of the freezer housing 1 to ensure uniform storage and prevent blockage.

[0020] Further, the gear 31 meshes with the rack one 28. The size of the air inlet frame 10 is adapted to that of the filter plate four 18. The size of the air guide plate 33 is adapted to that of the frame 11. Rectangular holes are provided on the outer walls of the bottoms of the rectangular frame one 19 and the rectangular frame two 20. A connection hole is provided on the bottom inner wall of the freezer housing 1. The connection hole communicates with the rectangular hole. A feed inlet 6 is provided on the outer wall of one side of the top of the freezer housing 1. An outlet is provided on the outer wall of the other side of the bottom of the freezer housing 1. A sealing plate is connected to the bottom inner wall of the outlet through a hinge. The size of the sealing plate is adapted to that of the outlet.

[0021] Further, the circular hole 1-24, the circular hole 2-25, the air inlet hole 26, the air return hole 29 and the filter plate 4-18 are arranged in a linear array. One side inner wall of the bottom of the refrigerator housing 1 is fixedly connected with a material guiding plate 9. The top outer wall of the material guiding plate 9 is provided with an inclined surface. The distance between the conveyor 2-5 and the refrigerator housing 1 is adapted to the size of the inclined surface. One side outer wall of the bottom end of the fixing plate 2-4 is hinged with a movable plate 22. A plurality of telescopic rods 2-23 are fixedly connected to one side outer wall of the bottom end of the fixing plate 2-4. One end of the piston rod of the telescopic rod 2-23 is fixedly connected to the bottom outer wall of the movable plate 22. The telescopic rod 2-23 is arranged in an arc shape. A return spring is arranged inside the telescopic rod 2-23. An installation groove is formed in the outer wall of the conveyor 3-13. A plurality of rollers 34 are rotatably arranged on the inner wall of the installation groove. A tooth groove 36 is arranged on one side outer wall of the roller 34. The other side inner wall of the bottom of the refrigerator housing 1 is fixedly connected with a rack 2-35. The rack 2-35 is adapted to the tooth groove 36 in size. The rack 2-35 is adapted to the height of the roller 34. A plurality of annular grooves are formed in the outer wall of the roller 34. A plurality of air outlet holes 37 are formed in the outer wall of the conveyor 3-13. The roller 34 is located above the air outlet hole 37. The roller 34 is rotatably arranged on the outer wall of the conveyor belt of the conveyor 3-13, reducing the blocked area and increasing the refrigeration effect. The air outlet hole 37 is formed in the conveyor belt of the conveyor 3-13. The air outlet hole 37 is adapted to the position of the roller 34. The sprayed cold air is just blocked by the roller 34, and the cold air is output from both sides of the roller 34 more evenly and comprehensively.

[0022] A freezing and refrigerating method for an aquatic product freezing and refrigerating storage device includes the following steps: 1) A pre-cooling area is arranged at the top of the refrigerator housing 1 and is conveyed through the conveyor 1-3 and the conveyor 2-5 to pre-cool the incoming aquatic products, quickly reducing the temperature of the aquatic products and reducing water loss and ice crystal formation during the subsequent freezing process; 2) The aquatic products enter the refrigerating area at the bottom of the refrigerator housing 1. The aquatic products fall on the conveyor 3-13 of the support plate 14, applying pressure to the support plate 14 to move it downward, driving the rectangular frame 1-19 and the rectangular frame 2-20 to slide downward. The air outlet structure in the pre-cooling area is gradually blocked, while the air inlet hole 26 and the air return hole 29 in the refrigerating area start to coincide and are exposed, and cold air can enter the refrigerating area; 3) In the initial stage of refrigerating the aquatic products, the air inlet hole 26 and the air return hole 29 in the refrigerating area are completely exposed, and a large amount of cold air enters the refrigerating area at the bottom of the refrigerator housing 1. The aquatic products are quickly cooled down and enter the frozen state; 4) In the middle and late stages of refrigerating the aquatic products, the weight of the aquatic products decreases, the support plate 14 rises, part of the air inlet hole 26 and the air return hole 29 are blocked, the cold air input amount decreases, and the freezing and refrigerating storage treatment of the aquatic products is carried out.

[0023] Working principle: When freezing and refrigerating aquatic products, the aquatic products are fed into the freezer shell 1 through the feed port 6 of the freezer shell 1, and first fall on the conveyor 1 3 on the top of the fixed plate 1 2. The inside of the freezer shell 1 is divided into two spaces by the fixed plate 2 4, the upper half is the pre-cooling space, and the lower half is the freezing and refrigeration space. The aquatic products are transported to the right side of the freezer shell 1 along the conveyor 1 3, and then transported to the left side of the freezer shell 1 through the conveyor 2 5 on the fixed plate 2 4, and finally fall to the bottom of the freezer shell 1. When the aquatic products are transported on the conveyor 1 3 and the conveyor 2 5, the bottom support plate 14 is supported by the telescopic rod 15 and the support spring 16. The spring 16 supports, the rectangular frame 19 and the rectangular frame 20 are located at the top of the freezer housing 1, and the circular holes 14 and 25 set on the top of the rectangular frame 19 and the rectangular frame 20 are adapted to the positions of the filter plate 17 and the filter plate 28. At this time, the circulating fan 17 at the bottom of the freezer housing 1 works, driving the cold air generated by the equipment to blow through the circular holes 14 and 25 on the rectangular frame 19 to the positions of the conveyor 13 and the conveyor 25, pre-cooling the conveyed aquatic products, and then entering the interior of the rectangular frame 20 through the circular holes 14 and 25 on the rectangular frame 20, and returning to the bottom of the freezer housing 1 to form a circulation As more and more aquatic products enter the refrigerated space at the bottom of the freezer housing 1 through the guide plate 9, the conveyor 3 13 and the support plate 14 are pressed. When the support plate 14 descends, the rectangular frame 19 and the rectangular frame 20 are also driven to descend. The circular holes 14 and 25 on the rectangular frames 19 and 20 are gradually staggered with the filter plates 1 7 and 2 8. At the same time, the air inlet holes 26 on the rectangular frame 19 gradually overlap with the air inlet frame 10 at the bottom of the fixed plate 2 4. The cold air enters the air inlet frame 10 through the filter plate 4 18, and then enters the net frame 11 from the bottom of the air inlet frame 10, and finally outputs to the conveyor 3 from the bottom of the net frame 11. The aquatic products placed on the top of 13 are frozen and refrigerated. As the aquatic products gradually fill the refrigerated space at the bottom of the freezer shell 1, the weight of the support plate 14 also drives the rectangular frame 19 and the rectangular frame 20 to drop to the maximum height. The circular hole 1 24 and the circular hole 25 are all blocked by the inner wall of the freezer shell 1. The air inlet 26 completely overlaps with the filter plate 4 18 for maximum cold air input. The bottom circular hole 30 overlaps with the through hole 21. Part of the cold air enters from the through hole 21 and is output from the inside of the conveyor three 13 to be frozen from the bottom of the aquatic products. The cold air returns to the rectangular frame two 20 from the return air hole 29 at the position of the filter plate three 12 to form a cycle.

[0024] When the first rectangular frame 19 and the second rectangular frame 20 descend, the rotation of the gear 31 at the position of the screen frame 11 is driven by the first rack 28 on the inner wall of the mounting hole 27, thereby driving the rotation of the air deflector 33 on the rotating rod 32. At the beginning of refrigeration, the support plate 14 is at the bottom. At this time, the air deflector 33 is in a vertical state, and the cold air is deflected vertically downward to ensure the freezing and refrigeration effect of aquatic products. In the middle and late stages of refrigeration, the weight of the aquatic products decreases. The support plate 14 and the third conveyor 13 rise by a certain height under the action of the first telescopic rod 15 and the support spring 16. The overlapping part of the air inlet holes 26 decreases, and the cold air entering the refrigeration space decreases. At this time, the first circular hole 24 and the second circular hole 25 are still blocked by the inner wall of the freezer housing 1 to prevent cold air from entering the pre-cooling space. When the first rectangular frame 19 and the second rectangular frame 20 rise, the rotation of the air deflector 33 is also driven by the first rack 28 and the gear 31 to adjust a certain air deflection angle, so that the cold air flows obliquely to ensure the refrigeration of aquatic products.

[0025] Aquatic products enter through the feed inlet 6 at the top of the freezer housing 1. The bottom support plate 14 cooperates with the third conveyor 13 to support the aquatic products. When it is necessary to take out the refrigerated aquatic products, directly start the third conveyor 13 and open the sealing plate on the freezer housing 1. The aquatic products are directly conveyed and removed through the conveyor belt of the third conveyor 13. When the aquatic products enter the refrigeration space for freezing storage, start the third conveyor 13. The aquatic products that have been entering the refrigeration space from the left side of the freezer housing 1 are conveyed to the right side and are blocked and limited by the right side of the freezer housing 1 to ensure uniform storage and prevent blockage. A roller 34 is rotatably arranged on the outer wall of the conveyor belt of the third conveyor 13 to reduce the blocked area and increase the freezing effect. Air outlet holes 37 are opened on the conveyor belt of the third conveyor 13. The air outlet holes 37 are adapted to the position of the roller 34. The sprayed cold air is just blocked by the roller 34, and the cold air is output more evenly and comprehensively from both sides of the roller 34. A second rack 35 is arranged on the inner wall of the bottom of the freezer housing 1. When the roller 34 on the third conveyor 13 moves to the position of the second rack 35, the tooth groove 36 of the roller 34 meshes with the second rack 35. The roller 34 that moves to the position of the second rack 35 will rotate under the action of the second rack 35, so that the aquatic products adhered to the roller 34 are separated, preventing adhesion from affecting the refrigeration effect of aquatic products and also facilitating blanking. An annular groove is arranged on the outer wall of the roller 34, which just corresponds to the position of the air outlet holes 37 to further improve the output effect of cold air. A second telescopic rod 23 is arranged on one side of the second fixing plate 4 to connect the movable plate 22. The aquatic products are conveyed to the position of the movable plate 22 through the second conveyor 5. The movable plate 22 will rotate and press the second telescopic rod 23. The movable plate 22 is inclined and the aquatic products fall into the refrigeration space. Then the movable plate 22 will reset under the action of the return spring in the second telescopic rod 23. The movable plate 22 abuts against the inner wall of the freezer housing 1, and the sealing gasket arranged on the movable plate 22 maintains the tightness of the refrigeration space. A water-absorbing sponge is arranged on the outer wall of the first conveyor 3 to absorb the residual moisture of the pre-cooled aquatic products on the first conveyor 3. The technical means disclosed by the solution of the present invention are not limited to those disclosed by the above technical means, but also include technical solutions composed of equivalent replacements of the above technical features. Matters not covered by the present invention are common general knowledge in the art.

Claims

1. A frozen and refrigerated storage device for aquatic products, comprising a freezer shell (1), a fixing plate 1 (2) being fixedly connected to an inner wall on one side of the top of the freezer shell (1), a conveyor 1 (3) being installed on the outer wall on the top of the fixing plate 1 (2), a fixing plate 2 (4) being fixedly connected to an outer wall on the other side of the top of the freezer shell (1), a conveyor 2 (5) being installed on the outer wall on the top of the fixing plate 2 (4), and rectangular grooves being provided on the inner walls on both sides of the freezer shell (1), characterized in that: Also includes; A refrigeration mechanism, the refrigeration mechanism being arranged inside the refrigerator housing (1); The refrigeration mechanism comprises a rectangular frame 1 (19) and a rectangular frame 2 (20) which are respectively slidably connected to the inner walls of the two rectangular grooves; the top outer walls of the rectangular frame 1 (19) and the rectangular frame 2 (20) are provided with a plurality of circular holes 1 (24), circular holes 2 (25) and mounting holes (27) in sequence from top to bottom; a rack 1 (28) is fixedly connected to the inner wall of one side of the mounting hole (27); an air inlet frame (10) is fixedly connected to the inner wall of the freezer housing (1); a mesh frame (11) is fixedly connected to the bottom outer wall of the air inlet frame (10); a plurality of air inlet holes ( 26), a plurality of return air holes (29) are provided on one side outer wall of the bottom of the rectangular frame 2 (20), filter plates 1 (7) and 2 (8) are fixedly connected to the inner walls of the top of the freezer housing (1) from top to bottom, a plurality of filter plates 4 (18) are fixedly connected to the inner wall of one side of the freezer housing (1), filter plate 3 (12) is fixedly connected to the inner wall of the other side of the bottom of the freezer housing (1), a slide groove is provided on the inner wall of the bottom of the freezer housing (1), a support plate (14) is slidably connected to the inner wall of the slide groove, and a conveyor 3 (13) is installed on the outer wall of the top end of the support plate (14).

2. The aquatic product freezing and refrigeration storage equipment according to claim 1, characterized in that: The inner wall of the net frame (11) is rotatably provided with a plurality of rotating rods (32), the outer walls on both sides of the rotating rods (32) are fixedly connected with gears (31), the outer walls of the rotating rods (32) are fixedly connected with air guide plates (33), the bottom inner wall of the refrigerator shell (1) is provided with a circulating fan (17), the outer wall on one side of the bottom of the rectangular frame one (19) is provided with a plurality of circular holes three (30), the rectangular frame one (19) and the rectangular frame two (20) are fixedly connected to the outer wall of the support plate (14), the bottom inner wall of the refrigerator shell (1) is fixedly connected with a plurality of telescopic rods one (15), one end of the piston rod of the telescopic rod one (15) is fixedly connected to the outer wall of the bottom end of the support plate (14), the outer wall of the telescopic rod one (15) is sleeved with a support spring (16), and the two ends of the support spring (16) are respectively fixedly connected to the outer wall of the support plate (14) and the inner wall of the refrigerator shell (1).

3. The aquatic product freezing and refrigeration storage equipment according to claim 2, characterized in that: The circular hole 1 (24) is adapted to the height of the filter plate 1 (7), the filter plate 1 (7) is adapted to the height of the conveyor 1 (3), and the conveyor 1 (3) is located above the conveyor 2 (5).

4. The aquatic product freezing and refrigeration storage equipment according to claim 3, characterized in that: The circular hole 2 (25) is adapted to the height of the filter plate 2 (8), the air inlet hole (26) is adapted to the size of the filter plate 4 (18), and the air inlet hole (26) is located above the filter plate 4 (18). A plurality of through holes (21) are provided on the inner wall of one side of the bottom of the freezer housing (1), and the through holes (21) are distributed in a linear array. The circular hole 3 (30) is adapted to the size of the through hole (21) and the conveyor 3 (13), and the return air hole (29) is adapted to the size of the filter plate 3 (12), and the return air hole (29) is located above the filter plate 3 (12).

5. The aquatic product freezing and refrigeration storage equipment according to claim 4, characterized in that: The gear (31) is meshed with rack one (28), the air inlet frame (10) is adapted to the size of filter plate four (18), the air guide plate (33) is adapted to the size of the mesh frame (11), rectangular holes are provided on the bottom outer walls of rectangular frame one (19) and rectangular frame two (20), and a connecting hole is provided on the bottom inner wall of the freezer housing (1), and the connecting hole is connected to the rectangular hole.

6. The aquatic product freezing and refrigeration storage equipment according to claim 1, characterized in that: An outer wall on one side of the top of the freezer housing (1) is provided with a feed port (6), and an outer wall on the other side of the bottom of the freezer housing (1) is provided with a discharge port. The inner wall at the bottom of the discharge port is connected to a sealing plate via a hinge, and the sealing plate is adapted to the size of the discharge port.

7. The aquatic product freezing and refrigeration storage equipment according to claim 1, characterized in that: The circular hole 1 (24), the circular hole 2 (25), the air inlet hole (26), the air return hole (29) and the filter plate 4 (18) are arranged in a linear array. A guide plate (9) is fixedly connected to an inner wall on one side of the bottom of the refrigerator shell (1). The top outer wall of the guide plate (9) is provided with an inclined surface. The spacing between the conveyor 2 (5) and the refrigerator shell (1) is adapted to the size of the inclined surface.

8. The aquatic product freezing and refrigeration storage equipment according to claim 1, characterized in that: The outer wall of one side of the bottom end of the fixed plate 2 (4) is connected to the movable plate (22) through a hinge, and the outer wall of one side of the bottom end of the fixed plate 2 (4) is fixedly connected to a plurality of telescopic rods 2 (23), one end of the piston rod of the telescopic rod 2 (23) is fixedly connected to the outer wall of the bottom end of the movable plate (22), the telescopic rod 2 (23) is arranged in an arc shape, and the inner wall of the telescopic rod 2 (23) is provided with a return spring, and the outer wall of the conveyor 3 (13) is provided with a mounting groove, and the inner wall of the mounting groove is rotatably provided with a plurality of rollers (34), a tooth groove (36) is provided on one side outer wall of the roller (34), a rack 2 (35) is fixedly connected to the inner wall on the other side of the bottom of the freezer shell (1), the size of the rack 2 (35) is adapted to the tooth groove (36), the height of the rack 2 (35) is adapted to the roller (34), a plurality of annular grooves are provided on the outer wall of the roller (34), a plurality of air outlet holes (37) are provided on the outer wall of the conveyor three (13), and the roller (34) is located above the air outlet holes (37).

9. A freezing and refrigerating method applied to the freezing and refrigerating storage device for aquatic products according to any one of claims 1 to 8, comprising the following steps: 1) A pre-cooling area is provided on the top of the freezer housing (1), and conveyed by conveyor 1 (3) and conveyor 2 (5) to pre-cool the incoming aquatic products, thereby quickly lowering the temperature of the aquatic products and reducing water loss and ice crystal formation in the subsequent freezing process; 2) The aquatic product enters the refrigerated area at the bottom of the freezer housing (1), and falls onto the conveyor 3 (13) of the support plate (14), exerting pressure on the support plate (14) to move it downward, driving the rectangular frame 1 (19) and the rectangular frame 2 (20) to slide down, and the air outlet structure of the pre-cooling area is gradually blocked, while the air inlet (26) and the air return hole (29) of the refrigerated area begin to overlap and be exposed, so that cold air can enter the refrigerated area; 3) In the initial stage of refrigeration of aquatic products, the air inlet (26) and the air return hole (29) of the refrigeration area are completely exposed, and a large amount of cold air enters the refrigeration area at the bottom of the freezer housing (1), causing the aquatic products to cool down quickly and enter a frozen state; 4) In the middle and late stages of refrigeration of aquatic products, the weight of the aquatic products is reduced, the support plate (14) rises, part of the air inlet holes (26) and the air return holes (29) are blocked, the amount of cold air input is reduced, and the aquatic products are stored in a frozen and refrigerated state.

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