Quick freezing device for abalone production and processing

Abstract

The invention discloses a rapid freezing device for abalone production and processing, and relates to the technical field of freezing, the rapid freezing device comprises an outer frame, a conveying assembly, a cooling assembly and a pre-cooling assembly, and rapid freezing of abalones is completed through cooperation of the conveying assembly, the cooling assembly and the pre-cooling assembly. Liquid nitrogen is sprayed to abalones conveyed on the conveying assembly through the annular cooling pipe and the nozzles so that the abalones can be quickly frozen through the liquid nitrogen, and the liquid nitrogen is stirred and disturbed through the cold air circulation mechanism so that it can be ensured that the liquid nitrogen makes full contact with the abalones in multiple directions and freezes the abalones; the tail end of the annular cooling pipe is communicated with the pre-cooling pipe through the arranged connecting pipe, so that residual liquid nitrogen in the annular cooling pipe is conveyed to the pre-cooling area, the pre-cooling pipe sprays the residual liquid nitrogen conveyed into the pre-cooling pipe from the air spraying groove to the abalones just entering the outer frame, and therefore the residual liquid nitrogen is used for pre-freezing the abalones; the freezing speed of the abalones is accelerated.

Description

Technical Field

[0001] This invention relates to the field of freezing technology, specifically to a rapid freezing device for abalone production and processing. Background Technology

[0002] Abalone, also known as stonefish or flounder, belongs to the phylum Mollusca, class Gastropoda, and is a marine mollusc. Its shell is thick and sturdy, resembling an ear. It is one of the world's eight renowned seafood delicacies. Abalone is oval-shaped, with purplish-red flesh interspersed with yellow, and a glossy appearance. Its surface is covered with a white frost. The meat is tender and smooth, with an exceptionally delicious flavor unmatched by other seafood. Since ancient times, it has been regarded as the "crown jewel of seafood delicacies." It is highly nutritious, containing abundant globulin, with a protein content of up to 40%. It also contains fat, sugar, inorganic salts, calcium, iron, iodine, and more than 20 kinds of amino acids, as well as low cholesterol.

[0003] For example, patent CN210399624U, published on April 24, 2020, entitled "A Quick-Freezing Equipment for Abalone Processing," includes a quick-freezing chamber containing a blower, a freezing unit, an operating device, and a base. The operating device includes an inclined platform, which is hinged to the base via a first connecting rod. A conveying device is installed at the opening of the inclined platform. The bottom of the inclined platform also has a first hinge, which is connected to an eccentric wheel via a third connecting rod on a transmission device. A water inlet nozzle is installed on the water inlet pipe. This patent enables the quick-freezing of abalone within the quick-freezing chamber by incorporating the operating device, blower, freezing unit, and water inlet pipe. The inclined platform in the operating device, with its conveying device at its opening, allows the first hinge of the inclined platform to be driven by the eccentric wheel via a connecting rod, thus dispersing the abalone frozen on the screen and scraping off excess ice with a scraper, reducing icing and improving the efficiency of finished product recovery after quick-freezing.

[0004] The shortcomings of existing technologies are that existing abalone quick-freezing equipment generally blows cold air directly onto the abalone during transport to freeze it, and the cold air generally only contacts the abalone from one direction, which makes it very easy for the inside of stacked abalone to be difficult to freeze, and it is also easy to freeze the stacked abalone into a whole. In addition, the direct freezing method causes a lot of energy waste. Summary of the Invention

[0005] The purpose of this invention is to provide a rapid freezing device for abalone production and processing, so as to overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A rapid freezing device for abalone production and processing includes an outer frame, within which a conveying assembly is disposed. The upper end of the conveying assembly is sequentially provided with a pre-cooling zone, a freezing zone, and a stripping zone, wherein the pre-cooling zone, the freezing zone, and the stripping zone are separated by a partition. The device also includes: A cooling assembly is provided in the freezing zone. The cooling assembly includes an annular cooling pipe, which is U-shaped and sleeved on the outside of the conveying assembly. Multiple nozzles are arranged opposite each other on the inner side of the annular cooling pipe, and the nozzles are staggered. A regulating valve is provided at one end of the annular cooling pipe, and the regulating valve is connected to the liquid nitrogen storage device. A cold air circulation mechanism is provided on the cooling assembly, and the cold air circulation mechanism is arranged between the partitions. A precooling component is disposed in the precooling zone. The precooling component includes a precooling pipe, which is connected to the cooling component via a connecting pipe. The connecting pipe is a telescopic flexible hose. The precooling pipe is U-shaped, and the conveying component is located inside the precooling pipe. Multiple jet slots are evenly arranged on the precooling pipe.

[0007] The aforementioned conveying assembly includes two conveying rollers, with a perforated conveyor belt sleeved between the two conveying rollers, and one end of at least one of the conveying rollers is connected to the output end of the conveying motor via a coupling. A crossbar is slidably arranged on the perforated conveyor belt, and a buffer spring is arranged between the crossbar and the perforated conveyor belt.

[0008] As described above, a cone is provided on the outside of the conveyor roller located in the stripping zone, and the cone can be inserted into the perforated conveyor belt.

[0009] As described above, the cooling assembly further includes a undulating mechanism, which is disposed inside the conveying assembly and located below the freezing zone.

[0010] As described above, the oscillation mechanism includes a rotating shaft, with a synchronous pulley at one end of the rotating shaft and the conveying assembly, and the two synchronous pulleys connected by a synchronous belt. Multiple eccentric pulleys are evenly arranged along the length of the rotating shaft, and the eccentric pulleys are staggered. A horizontal plate is provided on the inner side of the outer frame, and multiple lifting rods are evenly arranged along the length of the horizontal plate. Each lifting rod is slidably mounted on the horizontal plate, and a shock-absorbing spring is provided between each lifting rod and the horizontal plate, with the shock-absorbing spring sleeved on the outside of the lifting rod.

[0011] As described above, the upper end of the lifting rod is provided with an arc plate, and the lower end of the lifting rod is provided with a flat plate.

[0012] The aforementioned cold air circulation mechanism includes two cylinders, which are symmetrically arranged between two partitions and located on the upper side of the partitions. A fan is provided at the end of each cylinder facing the pre-cooling zone. Multiple openings are evenly arranged along the circumference of each cylinder. A conical opening is provided at the end of the cylinder with the fan, and the fan is located between the cylinder and the conical opening.

[0013] The precooling assembly further includes a sliding block, which is disposed on one side of the precooling tube and is slidably disposed on the inner wall of the outer frame. A return spring is disposed between the sliding block and the outer frame, and a baffle is disposed at the upper end of the precooling tube.

[0014] The above also includes a peeling component disposed in the peeling area. The peeling component includes a shovel plate, which is rotatably disposed inside the outer frame. The peeling component intermittently scrapes the surface of the conveying component in the peeling area with the shovel plate so that the shovel plate removes the ice adhering to the surface of the conveying component.

[0015] As described above, the peeling assembly also includes a movable frame, which is slidably disposed inside the outer frame. The lower end of the shovel plate is rotatably connected to the movable frame, and a reciprocating spring is provided between the movable frame and the outer frame.

[0016] In the above technical solution, the beneficial effects of the present invention are as follows: 1. The present invention sprays liquid nitrogen onto abalone conveyed on a conveying assembly through an annular cooling pipe and nozzle, so that the liquid nitrogen can quickly freeze the abalone. The liquid nitrogen is agitated and disturbed by a cold air circulation mechanism to ensure that the liquid nitrogen fully contacts the abalone from multiple directions and freezes it. The present invention connects the end of the annular cooling pipe to the precooling pipe through a connecting pipe, so that the residual liquid nitrogen in the annular cooling pipe is transported to the precooling zone. The precooling pipe then sprays the residual liquid nitrogen transported therein from the jet channel onto the abalone that has just entered the outer frame, thereby prefreezing the abalone with the residual liquid nitrogen and accelerating the freezing speed of the abalone. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a rapid freezing device for abalone production and processing provided in an embodiment of the present invention; Figure 2 This is a top view of a rapid freezing apparatus for abalone production and processing provided in another embodiment of the present invention; Figure 3 Provided for another embodiment of the present invention Figure 2 Sectional view at point AA; Figure 4 Provided for another embodiment of the present invention Figure 3 A magnified view of a portion of point M; Figure 5 A three-dimensional structural schematic diagram of a cold air circulation mechanism provided in another embodiment of the present invention; Figure 6 A three-dimensional structural diagram of the conveying roller, the undulating mechanism, and the stripping assembly provided in another embodiment of the present invention; Figure 7 A schematic diagram of the planar structure between the conveying roller, the undulating mechanism, and the stripping assembly provided in another embodiment of the present invention; Figure 8 A three-dimensional structural diagram of the annular cooling pipe, nozzle, regulating valve, precooling pipe, connecting pipe and baffle provided for another embodiment of the present invention; Figure 9 This is a partial three-dimensional structural diagram of the hollow conveyor belt, crossbars, and buffer springs provided in another embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Outer frame; 10. Partition; 2. Conveying assembly; 20. Pre-cooling zone; 21. Freezing zone; 22. Stripping zone; 23. Conveying roller; 230. Conical column; 24. Perforated conveyor belt; 25. Conveying motor; 26. Crossbar; 27. Buffer spring; 3. Cooling assembly; 30. Annular cooling pipe; 31. Nozzle; 32. Regulating valve; 33. Cold air circulation mechanism; 330. Cylinder; 331. Fan; 332. Opening; 333. Conical opening 34. Wave mechanism; 340. Rotating shaft; 341. Synchronous pulley; 342. Synchronous belt; 343. Eccentric pulley; 344. Horizontal plate; 345. Lifting rod; 3450. Arc plate; 3451. Flat plate; 346. Shock-absorbing spring; 4. Pre-cooling assembly; 40. Pre-cooling pipe; 41. Connecting pipe; 42. Sliding block; 43. Return spring; 44. Baffle; 5. Peeling assembly; 50. Shovel plate; 51. Moving frame; 52. Reciprocating spring. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "side", "inner", "outer", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] like Figures 1-9 As shown in the figure, a rapid freezing device for abalone production and processing provided in this embodiment of the invention includes an outer frame 1, with a feed inlet at one end of the outer frame 1, the feed inlet being connected to the outer frame 1. A conveying assembly 2 is provided inside the outer frame 1, and a pre-cooling zone 20, a freezing zone 21, and a peeling zone 22 are sequentially arranged on the upper end of the conveying assembly 2, with the pre-cooling zone 20, the freezing zone 21, and the peeling zone 22 separated by a partition 10. The lower end of the feed inlet is located at the end of the pre-cooling zone 20 away from the peeling zone 22. The device also includes: Cooling component 3 is located in freezing zone 21. Cooling component 3 includes an annular cooling pipe 30, which is U-shaped and sleeved on the outside of conveying component 2. Multiple nozzles 31 are arranged opposite each other on the inner side of the annular cooling pipe 30, and the nozzles 31 are staggered. One end of the annular cooling pipe 30 is provided with a regulating valve 32, which is connected to the liquid nitrogen storage device. Cooling component 3 is provided with a cold air circulation mechanism 33, which is located between partitions 10. The precooling component 4 is located in the precooling zone 20. The precooling component 4 includes a precooling pipe 40, which is connected to the cooling component 3 through a connecting pipe 41. The connecting pipe 41 is a telescopic flexible hose. The precooling pipe 40 is U-shaped, and the conveying component 2 is located inside the precooling pipe 40. Multiple jet slots are evenly arranged on the precooling pipe 40.

[0023] In another embodiment of the present invention, the conveying assembly 2 includes two conveying rollers 23, a perforated conveying belt 24 is sleeved between the two conveying rollers 23, and one end of at least one conveying roller 23 is connected to the output end of the conveying motor 25 through a coupling. A crossbar 26 is slidably arranged on the perforated conveying belt 24, and a buffer spring 27 is arranged between the crossbar 26 and the perforated conveying belt 24. The specific implementation method is as follows: First, abalone to be frozen is added to the rapid freezing device for abalone production and processing through the feed inlet, causing the abalone to fall from the feed inlet into the pre-cooling zone 20 of the conveying assembly 2. At this time, the conveying motor 25 drives the connected conveying roller 23 to rotate. This conveying roller 23 drives another conveying roller 23 to rotate through the perforated conveyor belt 24, thereby causing the perforated conveyor belt 24 to carry the abalone that has fallen on it from the pre-cooling zone 20 to the freezing zone 21 and the peeling zone 22. When the perforated conveyor belt 24 carries the abalone, in order to avoid insufficient freezing due to the abalone stacking and the stacked abalone freezing into a whole, when the perforated conveyor belt 24 carries the abalone, the stacked abalone is scraped flat by the partition 10, so that the abalone is laid in a single layer on the upper end of the perforated conveyor belt 24; in addition, the horizontal strips The crossbar 26 separates the abalone on the perforated conveyor belt 24 to prevent them from stacking. Simultaneously, the crossbar 26 compresses the buffer spring 27 and slides along the perforated conveyor belt 24. This allows the crossbar 26 to move and compress the abalone as it moves with the perforated conveyor belt 24, preventing them from getting stuck between the partition 10 and the perforated conveyor belt 24. When the abalone are laid out in a single layer and move with the perforated conveyor belt 24, the control valve is opened, allowing the liquid nitrogen storage device to supply liquid nitrogen into the annular cooling pipe 30. The liquid nitrogen entering the annular cooling pipe 30 is sprayed from the nozzle 31 onto the abalone on the perforated conveyor belt 24 to freeze them. At the same time, the cold air circulation mechanism 33 drives the airflow in the freezing zone 21 to flow fully, ensuring that the liquid nitrogen sprayed from the nozzle 31 fully contacts the abalone, thus allowing the liquid nitrogen to fully freeze them.

[0024] In another embodiment of the present invention, a cone 230 is provided on the outside of the conveyor roller 23 in the stripping zone 22, and the cone 230 can be inserted into the hollow conveyor belt 24; The specific implementation method is as follows: When the abalone on the perforated conveyor belt 24 is frozen using liquid nitrogen, the abalone moves synchronously with the perforated conveyor belt 24. During this process, the water seeping out of the abalone is frozen simultaneously and adheres to the perforated conveyor belt 24. This phenomenon makes it difficult for the perforated conveyor belt 24 to achieve its drainage function through the perforations. To prevent the perforations of the perforated conveyor belt 24 from being blocked by ice, when the conveyor motor 25 drives the two conveyor rollers 23 to rotate the perforated conveyor belt 24, the perforated conveyor belt 24, which bends at the conveyor rollers 23, can break and discharge the ice in the perforations. At the same time, the conveyor rollers 23 in the peeling zone 22 insert into the perforations of the perforated conveyor belt 24 with the help of the cones 230 set on their outer sides. The cones 230 insert into the perforations and squeeze the ice in them, causing it to be discharged, thereby ensuring the drainage effect of the perforated conveyor belt 24.

[0025] In another embodiment of the present invention, the cooling assembly 3 further includes a undulating mechanism 34, which is disposed inside the conveying assembly 2 and is located below the freezing zone 21. The specific implementation method is as follows: When the conveyor motor 25 drives the two conveyor rollers 23 to rotate the hollow conveyor belt 24, the drive motor drives the undulating mechanism 34 to rotate via the conveyor rollers 23, causing the undulating mechanism 34 to apply a squeezing action to the hollow conveyor belt 24. In this way, the undulating mechanism 34 can squeeze the frozen abalone through the hollow conveyor belt 24, thereby preventing the abalone from sticking to the surface of the hollow conveyor belt 24 after freezing, realizing the separation of the frozen abalone from the hollow conveyor belt 24, and avoiding the problem of difficulty in unloading the frozen abalone due to the abalone sticking to the hollow conveyor belt 24.

[0026] In another embodiment of the present invention, the oscillation mechanism 34 includes a rotating shaft 340. A synchronous wheel 341 is provided at one end of the rotating shaft 340 and the conveying component 2. The two synchronous wheels 341 are connected by a synchronous belt 342. A plurality of eccentric wheels 343 are evenly arranged on the rotating shaft 340 along its length direction and are staggered. A horizontal plate 344 is provided on the inner side of the outer frame 1. A plurality of lifting rods 345 are evenly arranged on the horizontal plate 344 along its length direction. Each lifting rod 345 is slidably arranged on the horizontal plate 344. A shock-absorbing spring 346 is provided between each lifting rod 345 and the horizontal plate 344. The shock-absorbing spring 346 is sleeved on the outside of the lifting rod 345. The specific implementation method is as follows: A synchronous pulley 341 is configured at one end of the conveyor roller 23 connected to the conveyor motor 25; when the conveyor motor 25 drives the two conveyor rollers 23 to rotate the perforated conveyor belt 24 to transport abalone, the conveyor motor 25 drives the synchronous pulley 341 on the conveyor rollers 23 to rotate synchronously, thereby causing the synchronous pulley 341 connected to the conveyor rollers 23 to rotate through the synchronous belt 342, causing the synchronous pulley 341 connected to the rotating shaft 340 to rotate synchronously, thus causing the rotating shaft 340 to rotate synchronously with the synchronous pulley 341. As a result, the rotating shaft 340 drives the multiple eccentric wheels 343 set on it to rotate synchronously. When the eccentric wheels 343 rotate, they will exert a squeezing effect on the lifting rod 345, causing the lifting rod 345 to move vertically along the horizontal plate 344. The lifting rod 345 moves vertically and, under the combined action of the eccentric wheel 343 and the shock-absorbing spring 346, can reciprocate on the horizontal plate 344. This allows the upper end of the lifting rod 345 to apply pressure to the perforated conveyor belt 24, causing the perforated conveyor belt 24 to deform at the point of pressure from the vertical rod. This bends the perforated conveyor belt 24 and breaks it to discharge the ice from the perforations, thus ensuring the drainage effect of the perforated conveyor belt 24. At the same time, when the lifting rod 345 moves vertically and presses the perforated conveyor belt 24, it can prevent the abalone from sticking to the surface of the perforated conveyor belt 24 after freezing. This facilitates the separation of the frozen abalone from the perforated conveyor belt 24 and avoids the situation where it is difficult to unload the frozen abalone due to sticking to the perforated conveyor belt 24.

[0027] In another embodiment of the present invention, an arc plate 3450 is provided at the upper end of the lifting rod 345, and a flat plate 3451 is provided at the lower end of the lifting rod 345. The specific implementation method is as follows: The upper end of the lifting rod 345 is fitted with the perforated conveyor belt 24 by means of the arc plate 3450. When the lifting rod 345 rises and squeezes the perforated conveyor belt 24, the arc plate 3450 can prevent the lifting rod 345 and the perforated conveyor belt 24 from getting stuck. The upper end of the lifting rod 345 is fitted with the edge of the eccentric wheel 343 by the flat plate 3451. The flat plate 3451 can increase the contact area between the lifting rod 345 and the edge of the eccentric wheel 343, thereby reducing the degree of wear between the lifting rod 345 and the edge of the eccentric wheel 343, while ensuring that the eccentric wheel 343 and the lifting rod 345 maintain stable contact.

[0028] In another embodiment of the present invention, the cold air circulation mechanism 33 includes two cylinders 330, which are symmetrically arranged between two partitions 10 and are located on the upper side of the partitions 10. A fan 331 is provided at one end of the cylinder 330 facing the pre-cooling zone 20. A plurality of openings 332 are evenly arranged along the circumference of the side of each cylinder 330. A conical opening 333 is provided at the end of the cylinder 330 where the fan 331 is located. The fan 331 is located between the cylinder 330 and the conical opening 333. The specific implementation method is as follows: When the perforated conveyor belt 24 transports abalone from the pre-cooling zone 20 to the freezing zone 21 for freezing, in order to ensure that the liquid nitrogen entering the freezing zone 21 through the annular cooling pipe 30 can fully contact the abalone to be frozen, a negative pressure effect is generated by the operation of the fan 331. The fan 331 draws air and liquid nitrogen from the freezing zone 21 through multiple openings 332 on the cylinder 330, thereby promoting the flow of liquid nitrogen in the freezing zone 21, and thus ensuring that the liquid nitrogen entering the freezing zone 21 through the annular cooling pipe 30 can fully contact the abalone to be frozen, achieving full freezing of the abalone by liquid nitrogen. In addition, the fan 331 draws air and liquid nitrogen from the cylinder 330 through multiple openings 332 on the cylinder 330. Air and liquid nitrogen drawn from the freezing zone 21 by multiple openings 332 on the 30 are sprayed into the pre-cooling zone 20 through the conical nozzle 333. This allows the liquid nitrogen sprayed from the conical nozzle 333 to pre-freeze the abalone that falls into the pre-cooling zone 20 from the feed inlet. In addition, when liquid nitrogen enters the annular cooling pipe 30 from the liquid nitrogen storage device through the regulating valve 32 and is sprayed into the freezing zone 21 from the nozzle 31 to freeze the abalone, excess liquid nitrogen will enter the connecting pipe 41 from the end of the annular cooling pipe 30 and then enter the pre-cooling pipe 40 through the connecting pipe 41. At this time, liquid nitrogen is sprayed from the jet groove on the pre-cooling pipe 40 into the abalone in the pre-cooling zone 20 to achieve pre-freezing of the abalone.

[0029] In another embodiment of the present invention, the precooling component 4 further includes a sliding block 42, which is disposed on one side of the precooling tube 40 and is disposed in a sliding manner on the inner wall of the outer frame 1. A reset spring 43 is disposed between the sliding block 42 and the outer frame 1, and a baffle 44 is disposed at the upper end of the precooling tube 40. The specific implementation method is as follows: When the fan 331 draws air and liquid nitrogen from the freezing zone 21 through multiple openings 332 on the cylinder 330 and sprays it towards the precooling zone 20 through the conical opening 333, the fan 331 drives the air and liquid nitrogen to be sprayed out from the conical opening 333 and impact the baffle 44. This impact force causes the baffle 44 to be displaced, which in turn drives the precooling pipe 40 and the sliding block 42 to squeeze the return spring 43 and move along the outer frame 1. Under the combined influence of the elastic action of the return spring 43 and the external force on the baffle 44, the precooling pipe 40 realizes reciprocating movement. In this way, the reciprocating precooling pipe 40 can spray liquid nitrogen evenly into the precooling zone 20 through the jet groove. In addition, when the precooling pipe 40 reciprocates, the connecting pipe 41 can extend and retract to adapt to the movement of the precooling pipe 40.

[0030] In another embodiment of the present invention, a peeling component 5 is also included. The peeling component 5 is disposed in the peeling area 22. The peeling component 5 includes a shovel 50, which is rotatably disposed inside the outer frame 1. The peeling component 5 intermittently scrapes the surface of the conveying component 2 in the peeling area 22 through the shovel 50 so that the shovel 50 removes the ice adhering to the surface of the conveying component 2. The specific implementation method is as follows: After the abalone is frozen in the freezing zone 21, the conveying motor 25 drives two conveying rollers 23 to rotate the perforated conveyor belt 24, causing the frozen abalone to move from the freezing zone 21 to the peeling zone 22. At the same time, the conveying motor 25 drives the rotating shaft 340 to rotate through the synchronous wheel 341 and the synchronous belt 342, which in turn drives the eccentric wheel 343 on it to rotate. When the eccentric wheel 343 rotates, it can drive the shovel plate 50 to swing back and forth in the outer frame 1. Through the back and forth swing of the shovel plate 50, the surface of the conveying component 2 in the peeling zone 22 is scraped, so as to scrape up and unload the frozen abalone on the perforated conveyor belt 24. The shovel plate 50 can also remove the ice blocks adhering to the perforated conveyor belt 24.

[0031] In another embodiment of the present invention, the peeling assembly 5 further includes a movable frame 51, which is slidably disposed on the inner side of the outer frame 1. The lower end of the shovel plate 50 is rotatably connected to the movable frame 51, and a reciprocating spring 52 is provided between the movable frame 51 and the outer frame 1. The specific implementation method is as follows: The conveyor motor 25 drives two conveyor rollers 23 to rotate the perforated conveyor belt 24, thereby conveying the frozen abalone from the freezing zone 21 to the peeling zone 22. At the same time, the conveyor motor 25 drives the rotating shaft 340 to rotate through the synchronous wheel 341 and the synchronous belt 342, which in turn drives the eccentric wheel 343 on the rotating shaft 340 to rotate. When the eccentric wheel 343 rotates, it exerts a squeezing effect on the moving frame 51, causing the moving frame 51 to squeeze the reciprocating spring 52 and move upward along the outer frame 1. At the same time, under the combined action of gravity and the reciprocating spring 52, the moving frame 51 drives the lower end of the shovel plate 50 to swing back and forth, thereby realizing the shovel plate 50 to remove the frozen abalone and its adhering ice blocks from the perforated conveyor belt 24.

[0032] Working principle: First, abalone to be frozen is added to the rapid freezing device for abalone production and processing through the feed inlet, causing the abalone to fall from the feed inlet into the pre-cooling zone 20 of the conveyor assembly 2. At this time, the conveyor motor 25 drives the connected conveyor roller 23 to rotate. This conveyor roller 23 drives another conveyor roller 23 to rotate through the perforated conveyor belt 24, thereby causing the perforated conveyor belt 24 to carry the abalone that has fallen on it from the pre-cooling zone 20 to the freezing zone 21 and the stripping zone 22. When the perforated conveyor belt 24 carries the abalone, in order to avoid the abalone stacking up and causing insufficient freezing or the stacked abalone freezing into a whole, when the perforated conveyor belt 24 carries the abalone, the partition 10 is used to scrape the stacked abalone flat, so that the abalone is laid in a single layer on the upper end of the perforated conveyor belt 24; in addition, the horizontal strips 26 can separate the abalone on the perforated conveyor belt 24 to prevent them from stacking. At the same time, the crossbar 26 can compress the buffer spring 27 and slide along the perforated conveyor belt 24. In this way, the crossbar 26 can make way and compress the abalone as it moves with the perforated conveyor belt 24, preventing the abalone from getting stuck between the partition 10 and the perforated conveyor belt 24. When the abalone are laid out in a single layer and move with the perforated conveyor belt 24, the control valve is opened, allowing the liquid nitrogen storage device to supply liquid nitrogen into the annular cooling pipe 30 through the control valve. The liquid nitrogen entering the annular cooling pipe 30 is sprayed from the nozzle 31 onto the abalone on the perforated conveyor belt 24 so that the liquid nitrogen can freeze the abalone. At the same time, the airflow in the freezing zone 21 is fully driven by the cold air circulation mechanism 33, so that the liquid nitrogen sprayed from the nozzle 31 can fully contact the abalone, thereby allowing the liquid nitrogen to fully freeze the abalone. When the abalone on the perforated conveyor belt 24 is frozen with liquid nitrogen, the abalone moves synchronously with the perforated conveyor belt 24. During this process, the water seeping out of the abalone will be frozen synchronously and stick to the perforated conveyor belt 24. This phenomenon will make it difficult for the perforated conveyor belt 24 to achieve the function of drainage through the perforations. To prevent ice from clogging the perforated parts of the perforated conveyor belt 24, when the conveyor motor 25 drives the two conveyor rollers 23 to rotate the perforated conveyor belt 24, the perforated conveyor belt 24, which is bent at the conveyor rollers 23, can break off and discharge the ice in the perforated parts. At the same time, the conveyor rollers 23 in the stripping zone 22 insert into the perforated parts of the perforated conveyor belt 24 with the help of the cones 230 set on their outer side. The cones 230 insert into the perforated parts and squeeze the ice in them, so as to discharge it, thereby ensuring the drainage effect of the perforated conveyor belt 24. When the perforated conveyor belt 24 transports abalone from the pre-cooling zone 20 to the freezing zone 21 for freezing, to ensure that the liquid nitrogen entering the freezing zone 21 via the annular cooling pipe 30 can fully contact the abalone to be frozen, a negative pressure effect is generated by the operation of the fan 331. The fan 331 draws air and liquid nitrogen from the freezing zone 21 through multiple openings 332 on the cylinder 330, thereby promoting the flow of liquid nitrogen in the freezing zone 21 and ensuring that the liquid nitrogen entering the freezing zone 21 via the annular cooling pipe 30 can fully contact the abalone to be frozen. The frozen abalone are fully in contact with the liquid nitrogen, achieving thorough freezing. Furthermore, fan 331 draws air and liquid nitrogen from the freezing zone 21 through multiple openings 332 on the cylinder 330, spraying it into the pre-cooling zone 20 through a conical nozzle 333. This allows the liquid nitrogen sprayed from the conical nozzle 333 to initially freeze the abalone falling into the pre-cooling zone 20 from the feed inlet. Additionally, when liquid nitrogen enters the annular cooling pipe 30 from the liquid nitrogen storage device via the regulating valve 32 and is sprayed from the nozzle 31 into the freezing zone 21 to freeze the abalone... Excess liquid nitrogen enters the connecting pipe 41 from the end of the annular cooling pipe 30, and then enters the pre-cooling pipe 40 through the connecting pipe 41. At this time, liquid nitrogen is sprayed from the jet slot on the pre-cooling pipe 40 onto the abalone in the pre-cooling zone 20 to achieve pre-freezing of the abalone. When the fan 331 draws air and liquid nitrogen from the freezing zone 21 through multiple openings 332 on the cylinder 330 and sprays it onto the pre-cooling zone 20 through the conical nozzle 333, the fan 331 drives the air and liquid nitrogen to be ejected from the conical nozzle 333 and impact the baffle 4. 4. This impact force causes the baffle 44 to shift, which in turn drives the precooling pipe 40 and the sliding block 42 to squeeze the return spring 43 and move along the outer frame 1. Under the combined influence of the elastic action of the return spring 43 and the external force on the baffle 44, the precooling pipe 40 reciprocates. In this way, the reciprocating precooling pipe 40 can evenly spray liquid nitrogen into the precooling zone 20 through the jet channel. In addition, when the precooling pipe 40 reciprocates, the connecting pipe 41 can extend and retract to adapt to the movement of the precooling pipe 40. When the conveyor motor 25 drives the two conveyor rollers 23 to rotate the perforated conveyor belt 24, the drive motor drives the undulating mechanism 34 to rotate via the conveyor rollers 23, causing the undulating mechanism 34 to apply a squeezing action to the perforated conveyor belt 24. In this way, the undulating mechanism 34 can squeeze the frozen abalone through the perforated conveyor belt 24, thereby preventing the abalone from sticking to the surface of the perforated conveyor belt 24 after freezing, realizing the separation of the frozen abalone from the perforated conveyor belt 24, and avoiding the problem of difficulty in unloading the frozen abalone due to the abalone sticking to the perforated conveyor belt 24. Specifically, a synchronous pulley 341 is configured at one end of the conveyor roller 23 connected to the conveyor motor 25. When the conveyor motor 25 drives the two conveyor rollers 23 to rotate the perforated conveyor belt 24 to transport abalone, the conveyor motor 25 drives the synchronous pulleys 341 on the conveyor rollers 23 to rotate synchronously. This, in turn, causes the synchronous pulleys 341 connected to the conveyor rollers 23 to rotate via the synchronous belt 342, which in turn drives the synchronous pulleys 341 connected to the rotating shaft 340 to rotate. This causes the rotating shaft 340 to rotate synchronously with the synchronous pulleys 341. Consequently, the rotating shaft 340 drives multiple eccentric wheels 343 mounted on it to rotate synchronously. When the eccentric wheels 343 rotate, they exert a squeezing effect on the lifting rod 345, causing the lifting rod 345 to move vertically along the horizontal plate 344. Furthermore, the eccentric wheels 343... Working in conjunction with the shock-absorbing spring 346, the lifting rod 345 can reciprocate on the horizontal plate 344, so that the upper end of the lifting rod 345 can apply pressure to the perforated conveyor belt 24, causing the perforated conveyor belt 24 to deform at the point of pressure from the vertical rod, thereby bending the perforated conveyor belt 24 and breaking it to discharge the ice from the perforations, thus ensuring the drainage effect of the perforated conveyor belt 24. At the same time, when the lifting rod 345 moves vertically and presses the perforated conveyor belt 24, the lifting rod 345 can prevent the abalone from sticking to the surface of the perforated conveyor belt 24 after freezing, which is conducive to the separation of the frozen abalone from the perforated conveyor belt 24 and avoids the consequences of the abalone sticking to the perforated conveyor belt 24. The frozen abalone is difficult to unload; the upper end of the lifting rod 345 is fitted with the perforated conveyor belt 24 by means of the arc plate 3450. When the lifting rod 345 rises and squeezes the perforated conveyor belt 24, the arc plate 3450 can prevent the lifting rod 345 and the perforated conveyor belt 24 from getting stuck; the upper end of the lifting rod 345 is fitted with the edge of the eccentric wheel 343 by the plate 3451. The plate 3451 can increase the contact area between the lifting rod 345 and the edge of the eccentric wheel 343, thereby reducing the wear between the lifting rod 345 and the edge of the eccentric wheel 343, while ensuring that the eccentric wheel 343 and the lifting rod 345 maintain stable contact. In addition, after the abalone is frozen in the freezing zone 21, the conveyor motor 25 drives two conveyor rollers 23 to rotate the perforated conveyor belt 24, causing the frozen abalone to move from the freezing zone 21 to the peeling zone 22. At the same time, the conveyor motor 25 drives the rotating shaft 340 to rotate via the synchronous pulley 341 and the synchronous belt 342, which in turn drives the eccentric wheel 343 on the shaft to rotate. When the eccentric wheel 343 rotates, it drives the shovel plate 50 to reciprocate within the outer frame 1. The reciprocating swing of the shovel plate 50 performs a scraping operation on the surface of the conveyor assembly 2 in the peeling zone 22, thereby lifting and unloading the frozen abalone from the perforated conveyor belt 24. The shovel plate 50 can also remove ice blocks adhering to the perforated conveyor belt 24. Specifically, the conveyor motor 25 drives two conveyor rollers 23 to rotate the perforated conveyor belt 24, thereby conveying the frozen abalone from the freezing zone 21 to the stripping zone 22. At the same time, the conveyor motor 25 drives the rotating shaft 340 to rotate through the synchronous wheel 341 and the synchronous belt 342, which in turn drives the eccentric wheel 343 on the rotating shaft 340 to rotate. When the eccentric wheel 343 rotates, it exerts a squeezing effect on the moving frame 51, causing the moving frame 51 to squeeze the reciprocating spring 52 and move upward along the outer frame 1. At the same time, under the combined action of gravity and the reciprocating spring 52, the moving frame 51 drives the lower end of the shovel plate 50 to swing back and forth, thereby realizing the shovel plate 50's removal of the frozen abalone and its adhering ice blocks from the perforated conveyor belt 24.

[0033] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rapid freezing device for abalone production and processing, comprising an outer frame (1), wherein a conveying assembly (2) is disposed within the outer frame (1), and a pre-cooling zone (20), a freezing zone (21), and a stripping zone (22) are sequentially disposed at the upper end of the conveying assembly (2), wherein the pre-cooling zone (20), the freezing zone (21), and the stripping zone (22) are separated by a partition (10), characterized in that, Also includes: Cooling assembly (3), the cooling assembly (3) is disposed in the freezing zone (21), the cooling assembly (3) includes an annular cooling pipe (30), the annular cooling pipe (30) is in the shape of a U and is sleeved on the outside of the conveying assembly (2), a plurality of nozzles (31) are arranged opposite to each other on the inner side of the annular cooling pipe (30), and the nozzles (31) are staggered, a regulating valve (32) is provided at one end of the annular cooling pipe (30), the regulating valve (32) is connected to the liquid nitrogen storage device, a cold air circulation mechanism (33) is provided on the cooling assembly (3), the cold air circulation mechanism (33) is disposed between the partitions (10); A precooling component (4) is provided in the precooling zone (20). The precooling component (4) includes a precooling pipe (40). The precooling pipe (40) is connected to the cooling component (3) through a connecting pipe (41). The connecting pipe (41) is a telescopic flexible hose. The precooling pipe (40) is U-shaped, and the conveying component (2) is located inside the precooling pipe (40). Multiple jet grooves are evenly provided on the precooling pipe (40).

2. The rapid freezing device for abalone production and processing according to claim 1, characterized in that, The conveying assembly (2) includes two conveying rollers (23), a perforated conveyor belt (24) is sleeved between the two conveying rollers (23), and one end of at least one of the conveying rollers (23) is connected to the output end of the conveying motor (25) through a coupling. A crossbar (26) is slidably arranged on the perforated conveyor belt (24), and a buffer spring (27) is arranged between the crossbar (26) and the perforated conveyor belt (24).

3. The rapid freezing device for abalone production and processing according to claim 2, characterized in that, A cone (230) is provided on the outside of the conveyor roller (23) located in the stripping zone (22), and the cone (230) can be inserted into the hollow conveyor belt (24).

4. The rapid freezing device for abalone production and processing according to claim 1, characterized in that, The cooling assembly (3) further includes a undulating mechanism (34), which is disposed inside the conveying assembly (2) and is located below the freezing zone (21).

5. The rapid freezing device for abalone production and processing according to claim 4, characterized in that, The oscillation mechanism (34) includes a rotating shaft (340), and a synchronous wheel (341) is provided at one end of the rotating shaft (340) and the conveying assembly (2). The two synchronous wheels (341) are connected by a synchronous belt (342). Multiple eccentric wheels (343) are evenly arranged along the length direction of the rotating shaft (340), and the eccentric wheels (343) are staggered. A horizontal plate (344) is provided on the inner side of the outer frame (1). Multiple lifting rods (345) are evenly arranged along the length direction of the horizontal plate (344). Each lifting rod (345) is slidably arranged on the horizontal plate (344), and a shock-absorbing spring (346) is provided between each lifting rod (345) and the horizontal plate (344). The shock-absorbing spring (346) is sleeved on the outside of the lifting rod (345).

6. The rapid freezing apparatus for abalone production and processing according to claim 5, characterized in that, The upper end of the lifting rod (345) is provided with an arc plate (3450), and the lower end of the lifting rod (345) is provided with a flat plate (3451).

7. The rapid freezing apparatus for abalone production and processing according to claim 1, characterized in that, The cold air circulation mechanism (33) includes two cylinders (330), which are symmetrically arranged between the two partitions (10) and are located on the upper side of the partitions (10). A fan (331) is provided at one end of the cylinder (330) facing the pre-cooling zone (20). Multiple openings (332) are evenly arranged along the circumference of each cylinder (330). A conical opening (333) is provided at one end of the cylinder (330) where the fan (331) is located. The fan (331) is located between the cylinder (330) and the conical opening (333).

8. The rapid freezing device for abalone production and processing according to claim 1, characterized in that, The precooling component (4) also includes a sliding block (42), which is disposed on one side of the precooling tube (40) and is disposed on the inner wall of the outer frame (1) in a sliding manner. A reset spring (43) is provided between the sliding block (42) and the outer frame (1), and a baffle (44) is provided at the upper end of the precooling tube (40).

9. A rapid freezing device for abalone production and processing according to claim 1, characterized in that, It also includes a peeling component (5), which is disposed in the peeling area (22). The peeling component (5) includes a shovel (50), which is rotatably disposed inside the outer frame (1). The peeling component (5) intermittently scrapes the surface of the conveying component (2) in the peeling area (22) by means of the shovel (50) so that the shovel (50) removes the ice adhering to the surface of the conveying component (2).

10. A rapid freezing device for abalone production and processing according to claim 9, characterized in that, The peeling assembly (5) also includes a movable frame (51), which is slidably disposed on the inner side of the outer frame (1). The lower end of the shovel plate (50) is rotatably connected to the movable frame (51), and a reciprocating spring (52) is provided between the movable frame (51) and the outer frame (1).

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