Aquatic product freezing and refrigeration storage equipment and freezing and refrigeration method

Abstract

The present invention relates to the field of aquatic product freezing technology, specifically to a kind of aquatic product freezing and refrigeration storage equipment and a freezing and refrigeration method thereof, comprising a freezer shell, one side inner wall of the top of the freezer shell is fixedly connected to a fixing plate 1, and the top outer wall of the fixing plate 1 is installed with a conveyor 1, the other side outer wall of the top of the freezer shell is fixedly connected to a fixing plate 2, and the top outer wall of the fixing plate 2 is installed with a conveyor 2, rectangular grooves are provided on the inner walls of both sides of the freezer shell, and further comprising: a refrigeration mechanism, which is arranged inside the freezer shell; cold air enters the refrigeration space for freezing and refrigeration treatment, and through pre-cooling treatment, 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 pre-cooling and freezing and refrigeration processes avoids the tediousness and errors of manual operation, and ensures that each stage can be accurately controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of aquatic product freezing, in particular to aquatic product freezing and refrigeration storage equipment and a freezing and refrigeration method thereof. Background Art

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

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

[0004] The object of the present invention is to provide a freezing and refrigerating storage device for aquatic products and a freezing and refrigerating method thereof, so as to solve the problems raised in the above background technology.

[0005] The technical solution of the present invention is: a frozen and refrigerated storage device for aquatic products, comprising a freezer housing, a first fixing plate fixedly connected to an inner wall on one side of the top of the freezer housing, a first conveyor mounted on an outer wall on the top of the first fixing plate, a second fixing plate fixedly connected to an outer wall on the other side of the top of the freezer housing, a second conveyor mounted on an outer wall on the top of the second fixing plate, rectangular grooves formed on both sides of the inner wall of the freezer housing, and further comprising;

[0006] a refrigeration mechanism, the refrigeration mechanism being arranged inside the freezer housing;

[0007] The refrigeration mechanism includes a rectangular frame 1 and a rectangular frame 2 respectively slidably connected to the inner walls of the two rectangular grooves, the top outer walls of the rectangular frame 1 and the rectangular frame 2 are sequentially provided with a plurality of circular holes 1, a circular hole 2 and a mounting hole from top to bottom. The inner wall of one side of the mounting hole is fixedly connected to a rack 1, the inner wall of the freezer shell is fixedly connected to an air inlet frame, the bottom outer wall of the air inlet frame is fixedly connected to the mesh frame. One side outer wall of the rectangular frame 1 is provided with a plurality of air inlet holes, and one side outer wall of the bottom of the rectangular frame 2 is provided with a plurality of return air holes. The two inner walls of the top of the freezer shell are sequentially fixedly connected with a filter plate 1 and a filter plate 2 from top to bottom, the inner wall of one side of the freezer shell is fixedly connected with a plurality of filter plates 4, and the inner wall of the other side of the bottom of the freezer shell is fixedly connected with a filter plate 3. The bottom inner wall of the freezer shell is provided with a sliding groove, the inner wall of the sliding groove is slidably connected to a support plate, and a conveyor 3 is installed on the top outer wall of the support plate.

[0008] Preferably, the inner wall of the net frame is rotatably provided with several rotating rods, the outer walls on both sides of the rotating rods are fixedly connected to gears, the outer walls of the rotating rods are fixedly connected to air guide plates, and a circulating fan is installed on the bottom inner wall of the freezer shell, and several circular holes three are opened on the outer wall of one side of the bottom of the rectangular frame, and the rectangular frame one and the rectangular frame two are fixedly connected to the outer wall of the support plate, and the bottom inner wall of the freezer shell is fixedly connected with several telescopic rods one, one end of the piston rod of the telescopic rod one is fixedly connected to the outer wall of the bottom end of the support plate, and the outer wall of the telescopic rod one is provided with a support spring, and 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 freezer shell.

[0009] Preferably, the circular hole 1 is adapted to the height of the filter plate 1, the filter plate 1 is adapted to the height of the conveyor 1, and the conveyor 1 is located above the conveyor 2.

[0010] Preferably, the circular hole two is adapted to the height of the filter plate two, the air inlet hole is adapted to the size of the filter plate four, the air inlet hole is located above the filter plate four, a plurality of through holes are opened on the inner wall on one side of the bottom of the freezer shell, and the through holes are distributed in a linear array, the circular hole three is adapted to the size of the through hole and the conveyor three, the return air hole is adapted to the size of the filter plate three, and the return air hole is located above the filter plate three.

[0011] Preferably, the gear is engaged with rack 1, the size of the air inlet frame is adapted to the size of filter plate 4, the size of the air guide plate is adapted to the size of the mesh frame, rectangular holes are provided on the bottom outer walls of rectangular frame 1 and rectangular frame 2, and a connecting hole is provided on the bottom inner wall of the freezer shell, and the connecting hole is connected to the rectangular hole.

[0012] Preferably, a feed port is provided on one outer wall of the top of the freezer shell, a discharge port is provided on the other outer wall of the bottom of the freezer shell, and a sealing plate is connected to the bottom inner wall of the discharge port via a hinge, and the sealing plate is adapted to the size of the discharge port.

[0013] Preferably, the circular hole one, circular hole two, air inlet hole, return air hole and filter plate four are distributed in a linear array, a material guide plate is fixedly connected to the inner wall of one side of the bottom of the freezer shell, the top outer wall of the material guide plate is provided with a slope, and the distance between the conveyor two and the freezer shell is adapted to the size of the slope.

[0014] Preferably, an outer wall on one side of the bottom end of the fixed plate second is connected to a movable plate by a hinge, an outer wall on one side of the bottom end of the fixed plate second is fixedly connected to a plurality of telescopic rods two, one end of the piston rod of the telescopic rod two is fixedly connected to the outer wall of the bottom end of the movable plate, the telescopic rod two is arranged in an arc shape, the inner wall of the telescopic rod two is provided with a return spring, the outer wall of the conveyor three is provided with a mounting groove, the inner wall of the mounting groove is rotatably provided with a plurality of rollers, one side outer wall of the roller is provided with a tooth groove, the other side inner wall of the bottom of the freezer shell is fixedly connected to a rack two, the rack two is adapted to the size of the tooth groove, the rack two is adapted to the height of the roller, the outer wall of the roller is provided with a plurality of annular grooves, the outer wall of the conveyor three is provided with a plurality of air outlet holes, and the roller is located above the air outlet holes.

[0015] A freezing and refrigeration method for aquatic product freezing and refrigeration storage device, comprising the following steps:

[0016] 1) A pre-cooling area is set up on the top of the freezer shell. The incoming aquatic products are conveyed through conveyors 1 and 2 to pre-cool the products, quickly lowering their temperature and reducing water loss and ice crystal formation during the subsequent freezing process.

[0017] 2) The aquatic product enters the refrigerated area at the bottom of the freezer housing and lands on conveyor 3 on the support plate. This exerts pressure on the support plate, causing it to move downward, driving rectangular frames 1 and 2 downward. The air outlet structure in the pre-cooling area is gradually blocked, while the air inlet and return holes in the refrigerated area begin to overlap and become exposed, allowing cold air to enter the refrigerated area.

[0018] 3) In the early stage of refrigeration of aquatic products, the air inlet and return holes in the refrigerated area are completely exposed, and a large amount of cold air enters the refrigerated area at the bottom of the freezer shell, causing the aquatic products to cool down quickly and enter the frozen state;

[0019] 4) In the middle and late stages of refrigeration of aquatic products, the weight of the aquatic products decreases, the support plates rise, some of the air inlet and return holes are blocked, the cold air input is reduced, and the aquatic products are stored in a frozen and refrigerated manner.

[0020] The present invention provides a frozen and refrigerated storage device for aquatic products and a frozen and refrigerated storage method thereof through improvements, which have the following improvements and advantages compared with the prior art:

[0021] 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 products are transported through 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 products. As the aquatic products enter 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 treatment. Through the pre-cooling treatment, the temperature of the aquatic products 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 precisely controlled.

[0022] Secondly, 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 and the air guide plate is in a vertical state. The cold air is guided vertically downward to ensure the freezing and refrigeration effect of the 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 overlapping part 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.

[0023] Thirdly, the present invention is provided with filter plate 1, filter plate 2, filter plate 3, support plate, conveyor 3 and rollers. Through multiple filtering and diversion designs, cold air can more effectively contact the aquatic products, further improving the freezing effect. Aquatic products that have been entering the refrigerated space from the left side of the freezer shell are conveyed 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 conveying and unloading of the aquatic products.

[0024] 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 engages 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 facilitating the unloading of the materials. An annular groove is provided on the outer wall of the roller, which just corresponds to the position of the air outlet, thereby further improving the output effect of the cold air and enhancing the freezing and refrigeration efficiency of the aquatic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further explained below in conjunction with the accompanying drawings and examples:

[0026] Figure 1 It is a front view of the overall structure of the present invention;

[0027] Figure 2 It is a sectional side view of the overall structure of the present invention;

[0028] Figure 3 is a cross-sectional side view of a freezer housing of the present invention;

[0029] Figure 4 The present invention Figure 1 A magnified schematic diagram of the structure in the middle;

[0030] Figure 5 Schematic diagram of conveyor 1 and conveyor 2 of the present invention;

[0031] Figure 6 It is a schematic diagram of a rectangular frame of the present invention;

[0032] Figure 7 It is a second schematic diagram of a rectangular frame of the present invention;

[0033] Figure 8 It is a schematic diagram of the screen frame of the present invention;

[0034] Figure 9 is a third schematic diagram of the conveyor of the present invention;

[0035] Figure 10 1 is a schematic cross-sectional view of the rectangular frame 1 and the conveyor 3 of the present invention.

[0036] Description of reference numerals:

[0037] 1. Freezer housing; 2. Fixed plate 1; 3. Conveyor 1; 4. Fixed plate 2; 5. Conveyor 2; 6. Feed inlet; 7. Filter plate 1; 8. Filter plate 2; 9. Guide plate; 10. Air inlet frame; 11. Screen 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 guide plate; 34. Roller; 35. Rack 2; 36. Tooth groove; 37. Air outlet hole. DETAILED DESCRIPTION

[0038] The present invention is described in detail below, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] The present invention provides an improved aquatic product freezing and refrigeration storage device and a freezing and refrigeration method thereof. The technical solution of the present invention is:

[0040] like Figures 1-10 As shown, a frozen and refrigerated storage device for aquatic products includes a freezer housing 1, a fixing plate 2 is fixedly connected to the inner wall of one side of the top of the freezer housing 1, a conveyor 3 is installed on the top outer wall of the fixing plate 2, a fixing plate 4 is fixedly connected to the other outer wall of the top of the freezer housing 1, a conveyor 5 is installed on the top outer wall of the fixing plate 4, and rectangular grooves are opened on both sides of the inner wall of the freezer housing 1.

[0041] A refrigeration mechanism is provided inside the freezer housing 1;

[0042] The refrigeration mechanism includes a rectangular frame 19 and a rectangular frame 20 respectively connected to the inner walls of the two rectangular grooves. The top outer walls of the rectangular frame 19 and the rectangular frame 20 are sequentially provided with a plurality of circular holes 1 24, a circular hole 25 and a mounting hole 27 from top to bottom. A rack 1 28 is fixedly connected to the inner wall of the mounting hole 27. The inner wall of the freezer shell 1 is fixedly connected to the air inlet frame 10. The bottom outer wall of the air inlet frame 10 is fixedly connected to the mesh frame 11. The outer wall of one side of the rectangular frame 19 is provided with a plurality of air inlet holes 2 6. A plurality of return air holes 29 are provided on the outer wall of one side of the bottom of the rectangular frame 20. The inner walls on both sides of the top of the freezer casing 1 are fixedly connected with filter plates 1 7 and filter plates 2 8 in sequence from top to bottom. A plurality of filter plates 4 18 are fixedly connected to the inner wall of one side of the freezer casing 1. A filter plate 3 12 is fixedly connected to the inner wall of the other side of the bottom of the freezer casing 1. A slide is provided on the inner wall of the bottom of the freezer casing 1. A support plate 14 is slidably connected to the inner wall of the slide. A conveyor 3 13 is installed on the outer wall of the top of the support plate 14.

[0043] Furthermore, 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, and the bottom inner wall of the freezer shell 1 is installed with a circulating fan 17. A plurality of circular holes 30 are opened on the outer wall of one side of the bottom of the rectangular frame 19, and the rectangular frame 19 and the rectangular frame 20 are fixedly connected to the outer wall of the support plate 14. The bottom inner wall of the freezer shell 1 is fixedly connected with a plurality of telescopic rods 15, and one end of the piston rod of the telescopic rod 15 is fixedly connected to the outer wall of the bottom end of the support plate 14. The outer wall of the telescopic rod 15 is provided 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 freezer shell 1. The circular hole 24 is adapted to the height of the filter plate 7. The height of the filter plate 7 is adapted to that of the conveyor 3, and the conveyor 3 is located above the conveyor 2 5. The circular hole 25 is adapted to the height of the filter plate 2 8, and the air inlet hole 26 is adapted to the size of the filter plate 4 18. The air inlet hole 26 is located above the filter plate 4 18. A number of through holes 21 are provided on the inner wall on one side of the bottom of the freezer casing 1. The through holes 21 are distributed in a linear array. The circular hole 30 is adapted to the size of the through hole 21 and the conveyor 3 13. The return air hole 29 is adapted to the size of the filter plate 3 12. The return air hole 29 is located above the filter plate 3 12. When aquatic products enter the refrigerated space for frozen storage, the conveyor 3 13 is started, and the aquatic products that have been entering the refrigerated space from the left side of the freezer casing 1 are transported to the right side and are blocked and limited by the right side of the freezer casing 1 to ensure uniform storage and prevent blockage.

[0044] Furthermore, the gear 31 is engaged with the rack 128, the size of the air inlet frame 10 is adapted to the size of the filter plate 4 18, the size of the air guide plate 33 is adapted to the size of the mesh frame 11, the bottom outer walls of the rectangular frame 19 and the rectangular frame 2 20 are provided with rectangular holes, the bottom inner wall of the freezer shell 1 is provided with a connecting hole, the connecting hole is connected to the rectangular hole, the outer wall on one side of the top of the freezer shell 1 is provided with a feed port 6, the outer wall on the other side of the bottom of the freezer shell 1 is provided with a discharge port, the bottom inner wall of the discharge port is connected to a sealing plate by a hinge, and the sealing plate is adapted to the size of the discharge port.

[0045] Furthermore, the circular hole 1 24, the circular hole 25, the air inlet hole 26, the return air hole 29 and the filter plate 4 18 are distributed in a linear array. The inner wall of one side of the bottom of the freezer shell 1 is fixedly connected to the guide plate 9, and the top outer wall of the guide plate 9 is provided with an inclined surface. The distance between the conveyor 2 5 and the freezer shell 1 is adapted to the size of the inclined surface. The outer wall of one side of the bottom end of the fixed plate 24 is connected to the movable plate 22 through a hinge. The outer wall of one side of the bottom end of the fixed plate 24 is fixedly connected to a plurality of telescopic rods 23. One end of the piston rod of the telescopic rod 23 is fixedly connected to the outer wall of the bottom end of the movable plate 22. The telescopic rod 23 is arranged in an arc shape. The inner wall of the telescopic rod 23 is provided with a reset spring. The outer wall of the conveyor 3 13 is provided with a mounting groove. The inner wall of the mounting groove is rotatably provided with There are several rollers 34, and a tooth groove 36 is provided on the outer wall of one side 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, and the height of the rack 2 35 is adapted to the roller 34. The outer wall of the roller 34 is provided with several annular grooves, and the outer wall of the conveyor three 13 is provided with several air outlets 37. The roller 34 is located above the air outlet 37. The roller 34 is rotatably set on the outer wall of the transmission belt of the conveyor three 13 to reduce the blocked area and increase the freezing effect. The air outlet 37 is provided on the transmission belt of the conveyor three 13. The air outlet 37 is adapted to the position of the roller 34. The ejected cold air is just blocked by the roller 34, and the cold air output from both sides of the roller 34 is more uniform and comprehensive.

[0046] A freezing and refrigeration method for aquatic product freezing and refrigeration storage device, comprising the following steps:

[0047] 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, quickly lowering the temperature of the aquatic products and reducing water loss and ice crystal formation during the subsequent freezing process;

[0048] 2) The aquatic product enters the refrigerated area at the bottom of the freezer housing 1 and lands on conveyor 3 13 on support plate 14. This exerts pressure on support plate 14, causing it to move downward, driving rectangular frame 19 and rectangular frame 2 20 downward. The air outlet structure in the pre-cooling area is gradually blocked, while the air inlet 26 and return air vent 29 in the refrigerated area begin to overlap and become exposed, allowing cold air to enter the refrigerated area.

[0049] 3) In the initial stage of refrigeration of aquatic products, the air inlet 26 and the air return vents 29 in the refrigerated area are completely exposed, and a large amount of cold air enters the refrigerated area at the bottom of the freezer housing 1, causing the aquatic products to cool down quickly and enter a frozen state;

[0050] 4) In the middle and late stages of refrigeration of aquatic products, the weight of the aquatic products decreases, the support plate 14 rises, part of the air inlet holes 26 and the air return holes 29 are blocked, the cold air input is reduced, and the aquatic products are frozen and refrigerated for storage.

[0051] 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 interior 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, which are located at the top of the freezer shell 1. 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 1 7 and the filter plate 2 8. At this time, the circulating fan 17 at the bottom of the freezer shell 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 3 and the conveyor 2 5, 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 shell 1 to form a circulation As more and more aquatic products enter the refrigerated space at the bottom of the freezer shell 1 through the guide plate 9, the conveyor three 13 and the support plate 14 are pressed. When the support plate 14 descends, the rectangular frame 19 and the rectangular frame 2 20 are also driven to descend. The circular holes 1 24 and the circular holes 25 on the rectangular frames 19 and 20 gradually stagger 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 three 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 2 20 to drop to the maximum height. The circular hole 1 24 and the circular hole 2 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 2 20 from the return air hole 29 at the position of the filter plate three 12 to form a cycle.

[0052] When the rectangular frame 19 and the rectangular frame 20 are lowered, the gear 31 at the position of the net frame 11 is linked to rotate by the rack 128 on the inner wall of the mounting hole 27, thereby driving the air guide plate 33 on the rotating rod 32 to rotate. At the beginning of refrigeration, the support plate 14 is at the bottom. At this time, the air guide plate 33 is in a vertical state, and the cold air is diverted vertically downward to ensure the freezing and refrigeration effect of the aquatic product. In the middle and late stages of refrigeration, the weight of the aquatic product decreases. The support plate 14 and the conveyor 3 13 rise partially under the action of the telescopic rod 15 and the support spring 16. The overlapping part of the air inlet 26 is reduced, and the cold air entering the refrigerated space is reduced. At this time, the circular hole 14 and the circular hole 25 are still blocked by the inner wall of the freezer shell 1 to prevent cold air from entering the pre-cooling space. When the rectangular frame 19 and the rectangular frame 2 are raised, the air guide plate 33 is also linked to rotate by the rack 128 and the gear 31 to adjust a certain air guide angle so that the cold air flows obliquely to ensure the refrigeration of the aquatic product.

[0053] The aquatic products enter through the feed port 6 at the top of the freezer shell 1, and the bottom support plate 14 cooperates with the conveyor three 13 to support the aquatic products. When the refrigerated aquatic products need to be taken out, the conveyor three 13 is directly started, the sealing plate on the freezer shell 1 is opened, and the aquatic products are directly transported out through the conveyor belt of the conveyor three 13. When the aquatic products enter the refrigerated space for frozen 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 shell 1 are transported to the right side and blocked and limited by the right side of the freezer shell 1 to ensure uniform storage and prevent blockage. Rollers 34 are arranged on the outer wall of the transmission belt of the conveyor three 13 to reduce the blocked area and increase the freezing effect. An air outlet 37 is provided on the transmission belt of the conveyor three 13, and the air outlet 37 is adapted to the position of the roller 34. The ejected cold air is just blocked by the roller 34, and the cold air output from both sides of the roller 34 is more uniform and comprehensive. A rack 2 35 is provided on the inner wall of the bottom of the freezer shell 1, and the roller 34 on the conveyor three 13 moves When the roller 34 moves to the position of the rack 2 35, the tooth groove 36 of the roller 34 engages with the rack 2 35. The roller 34 moved to the position of the rack 2 35 will rotate under the action of the rack 2 35, so that the aquatic products stuck to the roller 34 are separated, preventing the sticking from affecting the refrigeration effect of the aquatic products and facilitating the unloading of the materials. The outer wall of the roller 34 is provided with an annular groove, which just corresponds to the position of the air outlet 37, further improving the output effect of the cold air. A telescopic rod 23 is provided on one side of the fixed plate 24 to connect the movable plate 22, so that the aquatic products can pass through the roller 34. The water products are transported to the position of the movable plate 22 through the conveyor 25. The movable plate 22 will rotate to press the telescopic rod 23. The movable plate 22 will tilt and the aquatic products will fall into the refrigerated space. After that, the movable plate 22 will be reset under the action of the reset spring in the telescopic rod 23. The movable plate 22 will contact the inner wall of the freezer shell 1. The sealing of the refrigerated space is maintained by the sealing gasket arranged on the movable plate 22. A water-absorbing sponge is arranged on the outer wall of the conveyor 3 to absorb the residual moisture of the pre-cooled water products on the conveyor 3.

[0054] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacements of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A frozen and refrigerated storage device for aquatic products, comprising a freezer housing (1), wherein a fixing plate 1 (2) is fixedly connected to an inner wall on one side of the top of the freezer housing (1), a conveyor 1 (3) is installed on the outer wall on the top of the fixing plate 1 (2), a fixing plate 2 (4) is fixedly connected to the inner wall on the other side of the top of the freezer housing (1), a conveyor 2 (5) is installed on the outer wall on the top of the fixing plate 2 (4), and rectangular grooves are provided on the inner walls on both sides of the freezer housing (1), characterized in that: Also includes; A refrigeration mechanism, the refrigeration mechanism being arranged inside the freezer 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). The inner wall of the freezer shell (1) is fixedly connected to an air inlet frame (10). The bottom outer wall of the air inlet frame (10) is fixedly connected to a mesh frame (11). 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 both sides 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 plates 3 (12) are fixedly connected to the inner wall of the other side of the bottom of the freezer housing (1), a chute 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 chute, and a conveyor 3 (13) is installed on the outer wall of the top of the support plate (14); 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 freezer 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 freezer 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 provided with a support spring (16), 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 freezer shell (1); As more and more aquatic products enter the refrigerated space at the bottom of the freezer shell (1) through the guide plate (9), the conveyor three (13) and the support plate (14) are pressed. When the support plate (14) descends, the rectangular frame one (19) and the rectangular frame two (20) are also driven to descend. The circular hole one (24) and the circular hole two (25) on the rectangular frame one (19) and the rectangular frame two (20) gradually stagger with the filter plate one (7) and the filter plate two (8), and the air outlet structure of the pre-cooling area is gradually blocked.

2. The aquatic product freezing and refrigeration storage equipment according to claim 1, 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).

3. The aquatic product freezing and refrigeration storage equipment according to claim 2, 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).

4. The aquatic product freezing and refrigeration storage equipment according to claim 3, characterized in that: The gear (31) is meshed with the rack one (28), the air inlet frame (10) is adapted to the size of the filter plate four (18), the air guide plate (33) is adapted to the size of the mesh frame (11), the bottom outer walls of the rectangular frame one (19) and the rectangular frame two (20) are provided with rectangular holes, and the bottom inner wall of the freezer shell (1) is provided with a connecting hole, and the connecting hole is connected to the rectangular hole.

5. 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 bottom inner wall 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.

6. 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 distributed in a linear array. A guide plate (9) is fixedly connected to the inner wall of one side of the bottom of the freezer shell (1). The top outer wall of the guide plate (9) is provided with an inclined surface. The distance between the conveyor 2 (5) and the freezer shell (1) is adapted to the size of the inclined surface.

7. 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 reset 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 the outer wall of one side of the roller (34), and a rack 2 (35) is fixedly connected to the inner wall of 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), and the height of the rack 2 (35) is adapted to the roller (34), and a plurality of annular grooves are provided on the outer wall of the roller (34), and 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).

8. A freezing and refrigeration method for use in the freezing and refrigeration storage device for aquatic products according to any one of claims 1 to 7, 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 during 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, allowing cold air to 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 decreases, the support plate (14) rises, part of the air inlet (26) and the air return hole (29) are blocked, the cold air input is reduced, and the aquatic products are frozen and refrigerated for storage.

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