Low-temperature production system for removing fishy smell and locking freshness of fish maw

Abstract

The invention belongs to the technical field of fish maw processing, and discloses a low-temperature production system for fishy smell removal and freshness locking of fish maw, which comprises a placing rack, a barrier cover is fixedly mounted at the top end of the placing rack, a conveying belt is mounted at the bottom end of the barrier cover in the placing rack, and a spraying assembly is mounted at one side of the barrier cover and one side of the placing rack. Gas barrier structures are fixedly mounted on the two sides of the interior of the barrier cover; a turnover assembly is fixedly installed in the blocking cover, it is ensured that each part of fish maw can make uniform contact with cold air in the pre-cooling process through airflow turnover, the problem that due to the fact that turnover is not in time, partial areas are overcooled or pre-cooled unevenly is avoided, meanwhile, the frequency of manual intervention can be effectively reduced, and the overall working efficiency is improved; meanwhile, risks and errors caused by manual operation are reduced, it is ensured that all parts of the fish maw are evenly cooled, the overall quality of the fish maw can be improved, and the problems caused by single-face pre-cooling are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of fish maw processing, and in particular relates to a low-temperature production system for removing fishy smell and retaining freshness of fish maw. Background Art

[0002] Fish maw is a dried product of various fish bladders, famous for its rich gelatin. Its alias is fish maw. Fish maw is made from the maw of large fish (the organ that controls the fish's rise and fall and sinking). The fish that can be used include: red fish maw (longnose catfish), cod maw (Icelandic cod), red cod maw (New Zealand cod), red fish belly maw (new croaker), horse maw (horse maw), grouper maw (grouper), golden croaker maw (yellow croaker), white fish maw (large white croaker), yellow sturgeon maw (sturgeon), yellow fish maw (large yellow croaker), croaker maw (large croaker), eel maw (gate eel). Fish maw is not only a famous banquet dish, but also has considerable nourishing effect and medicinal value. "Compendium of Materia Medica" records that fish maw can nourish the kidney and essence, nourish the tendons and veins, and can treat kidney deficiency and spermatorrhea and postpartum wind spasm (postpartum food). Fish maw is rich in protein and gelatin, which can nourish yin and beauty, replenish blood, nourish the kidney, strengthen the body, and treat sore waist and knees, and weak body. It is most suitable for regular consumption;

[0003] Fish maw needs to be deodorized during the preparation process. There are various existing methods for deodorizing the fish maw, one of which is to pre-cool the fish maw and then rinse it with cold water to deodorize it. However, in this method, since the cold air is discharged from top to bottom to condense the fish maw, it is not convenient to turn the fish maw over during this process, resulting in the problem that the condensation effect at the top of the fish maw is greater than that at the bottom, further affecting the quality of the subsequent fish maw products. Summary of the invention

[0004] The present invention aims at the problem that in the prior art, since the cold air is discharged from top to bottom to condense the fish maw, it is inconvenient to turn the fish maw over during the process, resulting in the condensation effect at the top of the fish maw being greater than that at the bottom, which further affects the quality of the subsequent fish maw product. The present invention proposes the following technical solution:

[0005] A low-temperature production system for removing fishy smell and locking in freshness of fish maw, comprising: a placing rack, a barrier cover fixedly installed on the top of the placing rack, a conveyor belt installed inside the placing rack at the bottom of the barrier cover, a spray assembly installed at a position on one side of the barrier cover and the placing rack, and a gas barrier structure fixedly installed on both sides of the barrier cover;

[0006] A flip assembly is fixedly installed inside the barrier cover, and the flip assembly includes an inclined plate fixedly installed on the inner wall of the barrier cover and used for guiding the fish maw, one end surface of the inclined plate is symmetrically integrally formed with a side plate, a conveyor belt is installed between the inner walls of the two side plates, a spring rod is clamped and installed inside the side plate, a moving block is fixedly installed at the bottom end of the spring rod, a rubber roller is rotatably connected between the two moving blocks, one end surface of the two side plates is integrally formed with a friction plate, and a plurality of guide columns are equidistantly welded to the bottom end of the friction plate.

[0007] As a preferred embodiment of the above technical solution, grooves are equidistantly opened inside the friction plate, and the guide columns are arranged in three groups from horizontal to vertical downward, the distance between the two guide columns at the top is greater than the distance between the two guide columns in the middle, and the distance between the two guide columns in the middle is greater than the distance between the two guide columns at the bottom.

[0008] As a preferred embodiment of the above technical solution, two rotating shafts are rotatably connected inside the side panel, and the conveyor belt is sleeved on the outside of the two rotating shafts, a belt connecting structure is clamped and installed on the outside of one of the rotating shafts, a rotating seat is clamped and installed on one of the pulleys in the belt connecting structure, and the rotating seat is rotatably connected to the inside of the barrier cover, a rotating shaft is fitted on the outside of the rotating seat, and plastic plates are fixedly installed equidistantly on the outside of the rotating shaft.

[0009] As a preferred embodiment of the above technical solution, positioning plates are symmetrically sleeved and installed on both sides of the rotating shaft, a column is embedded and installed at one end of the positioning plate, and the column is fixedly installed inside the barrier cover.

[0010] As a preferred embodiment of the above technical solution, a connecting belt is sleeved on the outer surface of the rotating seat at a position on one side of the belt connecting structure, a rotating column rotatably connected to the barrier cover is connected between the two connecting belts, and a cam is clamped and installed in the middle of the outer surface of the rotating column.

[0011] As a preferred embodiment of the above technical solution, a pressing assembly is fixedly installed inside the barrier cover, and the pressing assembly includes a fixing frame symmetrically fixedly installed inside the barrier cover, a horizontal bar is symmetrically clamped and installed between two of the fixing frames, a positioning column is clamped and installed between the two fixing frames at one side of the horizontal bar, and a pressure roller is rotatably connected between the bottom ends of the inner walls of the two fixing frames.

[0012] As a preferred embodiment of the above technical solution, spring columns are symmetrically mounted at the bottom of the horizontal bar, a lifting frame is mounted between the bottom ends of the two spring columns, a bottom plate is welded to the middle of the bottom end of the lifting frame, and an extrusion roller is rotatably connected inside the bottom plate.

[0013] As a preferred embodiment of the above technical solution, the spray assembly includes a water tank fixedly installed on one side of the barrier hood and the placement rack, a water pump is installed inside the water tank, the water outlet of the water pump and the bottom end of the inner wall of the water tank are both installed with connecting pipes, one end of the connecting pipe located at the bottom end of the water tank is fixedly installed with a return hood, and the return hood is located inside the placement rack, the highest point of the return hood and the horizontal plane is lower than the lowest point of the conveyor belt and the horizontal plane, and one end of the connecting pipe located at the water outlet of the water pump is installed with a shower head, and the shower head is located at the top end of the inner wall of the barrier hood.

[0014] A low-temperature production system for removing fishy smell and retaining freshness of fish maw comprises the following steps:

[0015] Step 1: Raw material processing: First, the fish maw is cleaned, screened and processed to remove impurities and foreign matter.

[0016] Step 2: Pre-cooling: Place the processed fish maw on a placement rack and convey it into the barrier cover through a conveyor belt, and then the cold air from the outside enters the barrier cover, so that the fish maw is quickly pre-cooled in a low-temperature environment and turned over by a flipping assembly during cooling, and is flattened by a pressing assembly;

[0017] Step 3: Low-temperature soaking: The conveyor belt transports the fish maw to the inside of the spray component, and the low-temperature water inside the spray component is sprayed on the surface of the fish maw;

[0018] Step 4: Low-temperature drying / freezing: After the fish maw has been deodorized, it is properly pasteurized and then processed by low-temperature drying or freezing;

[0019] Step 5: Packaging and transportation: The fish maw processed as above is quickly cooled and then vacuum packed.

[0020] The beneficial effects of the present invention are:

[0021] (1) By turning the fish maw over with airflow, it is ensured that every part of the fish maw can be evenly exposed to cold air during the pre-cooling process, thus avoiding the problem of overcooling or uneven pre-cooling of some areas due to untimely turning over. At the same time, it can effectively reduce the frequency of manual intervention, improve overall work efficiency, reduce the risks and errors caused by manual operation, and ensure that all parts of the fish maw are evenly cooled, thus improving its overall quality and avoiding the problems caused by one-side pre-cooling;

[0022] (2) The fish maw can be effectively and evenly soaked and cleaned at low temperature, which not only helps to remove impurities and bacteria on the surface of the fish maw, but also can remove the fishy smell of the fish maw, while ensuring the cleanliness and hygiene of the fish maw, and helps to maintain the original flavor and texture of the fish maw, and prevents the loss or deterioration of the nutrients of the fish maw due to excessive temperature;

[0023] (3) It can reduce the water content of the fish maw, making it easier to be flattened, thereby improving the effect of subsequent pressing treatment and ensuring that the fish maw can be stably and evenly moved to the next processing step, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It shows a schematic diagram of the structure of a low-temperature production system for removing fishy smell and retaining freshness of fish maw in Example 1;

[0025] Figure 2 Shown is a cross-sectional view of the barrier cover in Example 1;

[0026] Figure 3 The figure shows a schematic diagram of the installation structure of the fixing frame in Example 1;

[0027] Figure 4 What is shown is a schematic diagram of the structure of the flip assembly in Example 1;

[0028] Figure 5 Shown is a bottom view of the flip assembly in Example 1;

[0029] Figure 6 Shown is a front view of the flip assembly in Example 1;

[0030] Figure 7 The structure diagram of the pressing assembly in Example 1 is shown;

[0031] Figure 8 Shown is a schematic diagram of the structure of the spray assembly in Example 1.

[0032] In the figure: 1. placement rack; 2. barrier cover; 3. gas barrier structure; 4. conveyor belt; 5. flip assembly; 51. tilting plate; 52. side plate; 53. conveyor belt; 54. spring rod; 55. moving block; 56. rubber roller; 57. belt connection structure; 58. rotating shaft; 59. plastic plate; 510. positioning plate; 511. column; 512. friction plate; 513. guide column; 514. connecting belt; 515. rotating column; 516. cam; 517. rotating seat; 6. pressing assembly; 61. fixing rack; 62. horizontal bar; 63. positioning column; 64. pressing roller; 65. spring column; 66. lifting rack; 67. bottom plate; 68. squeezing roller; 7. spray assembly; 71. water storage tank; 72. water pump; 73. connecting pipe; 74. shower; 75. backflow cover. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0034] Example 1

[0035] The present invention provides a low-temperature production system for removing fishy smell and retaining freshness of fish maw, such as Figures 1 to 8 As shown, it comprises: a placing rack 1, a barrier cover 2 is fixedly installed on the top of the placing rack 1, a conveyor belt 4 is installed at the bottom of the barrier cover 2 inside the placing rack 1, a spray assembly 7 is installed at the barrier cover 2 and one side of the placing rack 1, and a gas barrier structure 3 is fixedly installed on both sides of the barrier cover 2. The gas barrier structure 3 consists of vertical strips and rubber strips. The vertical strips are fixedly installed on the top of the inner walls on both sides of the barrier cover 2, and rubber strips are fixedly installed at equal intervals inside the vertical strips;

[0036] A flip assembly 5 is fixedly installed inside the barrier cover 2, and the flip assembly 5 includes an inclined plate 51 fixedly installed on the inner wall of the barrier cover 2 and used for guiding the fish maw. A side plate 52 is symmetrically integrally formed on one end surface of the inclined plate 51, and a conveyor belt 53 is installed between the inner walls of the two side plates 52. A spring rod 54 is clamped and installed inside the side plate 52, and a moving block 55 is fixedly installed on the bottom end of the spring rod 54. A rubber roller 56 is rotatably connected between the two moving blocks 55. A friction plate 512 is integrally formed on one end surface of the two side plates 52, and a plurality of guide columns 513 are equidistantly welded to the bottom end of the friction plate 512.

[0037] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, grooves are evenly spaced inside the friction plate 512, and the guide posts 513 are arranged in three groups from horizontal to vertical downward, and the spacing between the two top guide posts 513 is greater than the spacing between the two middle guide posts 513, and the spacing between the two middle guide posts 513 is greater than the spacing between the two bottom guide posts 513, which is convenient for guiding fish maws of different sizes so that the fish maws can smoothly enter the surface of the conveyor belt 4, and the side plate 52 is internally rotatably connected with two rotating shafts, and the conveyor belt 53 is sleeved on the outside of the two rotating shafts, and a belt connecting structure 57 is installed on the outside of one of the rotating shafts, which is convenient for the operation of the belt connecting structure 57 and changes the difficulty of the operation of the belt connecting structure 57. One of the pulleys in 7 is mounted with a rotating seat 517, and the rotating seat 517 is rotatably connected to the inside of the barrier cover 2. A rotating shaft 58 is fitted on the outside of the rotating seat 517, and a plastic plate 59 is fixedly installed on the outside of the rotating shaft 58 at an equal distance. Positioning plates 510 are symmetrically sleeved and installed on both sides of the rotating shaft 58. A column 511 is embedded and installed at one end of the positioning plate 510, and the column 511 is fixedly installed inside the barrier cover 2. A connecting belt 514 is sleeved on the outer surface of the rotating seat 517 at one side of the belt connecting structure 57. A rotating column 515 rotatably connected to the barrier cover 2 is connected between the two connecting belts 514, and a cam 516 is mounted on the middle of the outer surface of the rotating column 515.

[0038] When the conveyor belt 4 rotates, it drives the rotating shaft to rotate. When the rotating shaft rotates, it drives the belt connecting structure 57 to operate. When the belt connecting structure 57 operates, it drives the rotating seat 517 to rotate. When the rotating seat 517 rotates, it drives the rotating shaft 58 to rotate. When the rotating shaft 58 rotates, it drives the plastic plate 59 to rotate. When the plastic plate 59 rotates, it drives the gas to flow. The flowing gas is blown to the fish maw, so that the fish maw is turned over, which changes the difficulty of turning the fish maw over, thereby preventing the fish maw from being pre-condensed on one side, and can drive the cam 516 to rotate, which changes the difficulty of rotating the cam 516.

[0039] like Figure 3 and Figure 7 As shown, a pressing assembly 6 is fixedly installed inside the barrier cover 2, and the pressing assembly 6 includes a fixing frame 61 symmetrically fixedly installed inside the barrier cover 2, a horizontal bar 62 is symmetrically clamped and installed between the two fixing frames 61, a positioning column 63 is clamped and installed between the two fixing frames 61 at a position on one side of the horizontal bar 62, a pressing roller 64 is rotatably connected between the bottom ends of the inner walls of the two fixing frames 61, a spring column 65 is symmetrically clamped and installed at the bottom end of the horizontal bar 62, a lifting frame 66 is clamped and installed between the bottom ends of the two spring columns 65, the top end of the lifting frame 66 and the bottom end of the cam 516 are in contact with each other, a bottom plate 67 is welded to the middle of the bottom end of the lifting frame 66, and an extrusion roller 68 is rotatably connected inside the bottom plate 67;

[0040] As the cam 516 rotates, it drives the lifting frame 66 to move downward, and when the lifting frame 66 moves, it drives the spring column 65 to stretch. In this process, as the lifting frame 66 drives the bottom plate 67 to move, when the bottom plate 67 moves, it drives the squeezing roller 68 to squeeze the fish maw remaining at one end of the pressing roller 64. At this time, the squeezing moves along the bottom end of the squeezing roller 68 and enters the bottom end of the pressing roller 64, and then presses along the bottom end of the pressing roller 64 to flatten the fish maw and reduce wrinkles. Then the flattened fish maw enters the inside of the flip assembly 5 to be flipped, and the flipped fish maw is flattened again.

[0041] like Figure 1 and Figure 8 As shown, the spray assembly 7 includes a water storage tank 71 fixedly mounted on one side of the barrier cover 2 and the placement rack 1, a water pump 72 is installed inside the water storage tank 71, a connecting pipe 73 is installed at the water outlet of the water pump 72 and the bottom end of the inner wall of the water storage tank 71, a return cover 75 is fixedly mounted on one end of the connecting pipe 73 located at the bottom end of the water storage tank 71, and the return cover 75 is located inside the placement rack 1, the highest point of the return cover 75 and the horizontal plane is lower than the lowest point of the conveyor belt 4 and the horizontal plane, and a shower head 74 is installed on one end of the connecting pipe 73 located at the water outlet of the water pump 72, and the shower head 74 is located at the top position of the inner wall of the barrier cover 2;

[0042] The fish maw flattened on both sides enters the spray assembly 7, and the condensed water is extracted by the water pump 72. The extracted condensed water enters the shower head 74 along the connecting pipe 73, and is sprayed onto the surface of the fish maw along the shower head 74, so that the fish maw is soaked and cleaned at low temperature, and then the liquid flows back along the reflux cover 75 and the connecting pipe 73 and enters the water tank 71, so that the condensed water flows back.

[0043] A low-temperature production system for removing fishy smell and retaining freshness of fish maw comprises the following steps:

[0044] Step 1: Raw material processing: First, the fish maw is cleaned, screened and processed to remove impurities and foreign matter.

[0045] Step 2: Pre-cooling: Place the processed fish maw on the placement rack 1, and transport it into the barrier cover 2 through the conveyor belt 4, and then the cold air from the outside enters the barrier cover 2, so that the fish maw is quickly pre-cooled in a low-temperature environment and turned over by the flipping component 5 during cooling, and at the same time, it is flattened by the pressing component 6, which effectively inhibits the growth of microorganisms and initially locks in the freshness of the fish maw.

[0046] Step 3: Low-temperature soaking: The conveyor belt 4 transports the fish maw to the inside of the spray component 7. At this time, the low-temperature water inside the spray component 7 is sprayed on the surface of the fish maw; this helps to better remove the fishy smell and impurities in the fish maw, while softening its taste. This process usually uses circulating low-temperature water.

[0047] Step 4: Low-temperature drying / freezing: After the fish maw has been deodorized, it is properly pasteurized and then processed by low-temperature drying or freezing. Low-temperature drying can retain some moisture for subsequent use, while freezing can preserve it for a long time.

[0048] Step 5: Packaging and transportation: The fish maw processed as above is quickly cooled and then vacuum-packed to prevent oxidation and microbial contamination, and then transported through a dedicated cold chain to ensure the freshness of the product.

[0049] Working principle: During the actual use of the device, the fish maw is placed into the conveyor belt 4, and the conveyor belt 4 is started. The conveyor belt 4 transports the fish maw and allows the fish maw to enter the barrier cover 2. Condensed gas is injected into the barrier cover 2 to pre-condense the fish maw, and the gas remains in the barrier cover 2. The fish maw then enters the bottom of the pressing roller 64 along the conveyor belt 4. The fish maw is transported and pressed between the pressing roller 64 and the conveyor belt 4. When the fish maw is higher than one end of the pressing roller 64 and cannot enter, the cam 516 rotates to drive the lifting frame 66 to move downward, and the lifting frame 66 is lifted. When the frame 66 moves, the spring column 65 is driven to stretch, and in this process, since the lifting frame 66 drives the bottom plate 67 to move, the bottom plate 67 drives the squeezing roller 68 to squeeze the fish maw remaining at one end of the pressing roller 64 when it moves. At this time, the squeezing roller moves along the bottom end of the squeezing roller 68 and enters the bottom end of the pressing roller 64, and then presses along the bottom end of the pressing roller 64, so that the fish maw is flattened and wrinkles are reduced. This method can reduce the water content of the fish maw, making it easier to be flattened, thereby improving the effect of subsequent pressing treatment, and ensuring that the fish maw can be stably and evenly moved to the next processing step, thereby improving production efficiency;

[0050] Then it enters the top of the conveyor belt 53 along the inclined plate 51. At this time, the spring rod 54 drives the moving block 55 to move, and the moving block 55 drives the rubber roller 56 to fit with the conveyor belt 4. At the same time, the conveyor belt 4 drives the rubber roller 56 to rotate. When the rubber roller 56 rotates, it drives the conveyor belt 53 to rotate. When the conveyor belt 53 rotates, it drives the fish maw to enter the top of the friction plate 512. When the conveyor belt 4 rotates, it drives the rotating shaft to rotate. When the rotating shaft rotates, it drives the belt connecting structure 57 to run. When the belt connecting structure 57 runs, it drives the rotating seat 517 to rotate. When the rotating seat 517 rotates, it drives the rotating shaft 58 to rotate. When the rotating shaft 58 rotates, it drives the plastic plate 59 to rotate. When the plastic plate 59 rotates, it drives the air The air body flows, and the flowing gas is used to blow toward the fish maw, so that the fish maw is turned over, which changes the difficulty of turning over the fish maw, thereby preventing the fish maw from being pre-condensed on one side. By turning over the fish maw with the airflow, it is ensured that each part of the fish maw can be evenly exposed to the cold air during the pre-cooling process, and the problem of overcooling or uneven pre-cooling of some areas caused by untimely turning over can be avoided. At the same time, the frequency of manual intervention can be effectively reduced, and the overall work efficiency can be improved. At the same time, the risks and errors caused by manual operation are reduced, and it is ensured that all parts of the fish maw are evenly cooled, which can improve its overall quality, avoid the problem caused by single-side pre-cooling, and can drive the cam 516 to rotate, which changes the difficulty of rotating the cam 516.

[0051] As the cam 516 rotates, it drives the lifting frame 66 to move downward, and when the lifting frame 66 moves, it drives the spring column 65 to stretch. In this process, as the lifting frame 66 drives the bottom plate 67 to move, when the bottom plate 67 moves, it drives the squeezing roller 68 to squeeze the fish maw remaining at one end of the pressing roller 64. At this time, the squeezing roller moves along the bottom end of the squeezing roller 68 and enters the bottom end of the pressing roller 64, and then presses along the bottom end of the pressing roller 64, so that the turned fish maw is flattened to reduce wrinkles.

[0052] Finally, the fish maw, which has been flattened on both sides, enters the spray assembly 7, and the condensed water is extracted by the water pump 72. The extracted condensed water enters the shower head 74 along the connecting pipe 73, and is sprayed onto the surface of the fish maw along the shower head 74, so that the fish maw is soaked and cleaned at low temperature. Then the liquid flows back along the reflux cover 75 and the connecting pipe 73 and enters the water storage tank 71, so that the condensed water flows back. This method can effectively and evenly soak and clean the fish maw at low temperature, which not only helps to remove impurities and bacteria on the surface of the fish maw, but also can remove the fishy smell of the fish maw, while ensuring the cleanliness and hygiene of the fish maw, and helping to maintain the original flavor and texture of the fish maw, and preventing the loss or deterioration of the nutrients in the fish maw due to excessive temperature.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A low-temperature production system for removing fishy smell and retaining freshness of fish maw, characterized in that: include: A placing rack (1), a barrier cover (2) is fixedly installed on the top of the placing rack (1), a conveyor belt (4) is installed inside the placing rack (1) at the bottom of the barrier cover (2), a spray assembly (7) is installed at a position on one side of the barrier cover (2) and the placing rack (1), and a gas barrier structure (3) is fixedly installed on both sides of the barrier cover (2); A flip assembly (5) is fixedly installed inside the barrier cover (2), and the flip assembly (5) includes an inclined plate (51) fixedly installed on the inner wall of the barrier cover (2) and used for guiding the fish maw. One end surface of the inclined plate (51) is symmetrically integrally formed with a side plate (52), and a conveyor belt (53) is installed between the inner walls of the two side plates (52). A spring rod (54) is clamped and installed inside the side plate (52), and a moving block (55) is fixedly installed at the bottom end of the spring rod (54). A rubber roller (56) is rotatably connected between the two moving blocks (55). One end surface of the two side plates (52) is integrally formed with a friction plate (512), and a plurality of guide columns (513) are equidistantly welded to the bottom end of the friction plate (512).

2. A low-temperature production system for removing fishy smell and retaining freshness of fish maw according to claim 1, characterized in that: Grooves are equidistantly provided inside the friction plate (512), and the guide posts (513) are arranged in three groups from horizontal to vertical downward, the spacing between the top two guide posts (513) is greater than the spacing between the middle two guide posts (513), and the spacing between the middle two guide posts (513) is greater than the spacing between the bottom two guide posts (513).

3. A low-temperature production system for removing fishy smell and retaining freshness of fish maw according to claim 1, characterized in that: The side plate (52) is internally rotatably connected to two rotating shafts, and the conveyor belt (53) is sleeved on the outside of the two rotating shafts. A belt connecting structure (57) is mounted on the outside of one of the rotating shafts, and a rotating seat (517) is mounted on one of the pulleys in the belt connecting structure (57), and the rotating seat (517) is rotatably connected to the inside of the barrier cover (2). A rotating shaft (58) is fitted on the outside of the rotating seat (517), and a plastic plate (59) is fixedly mounted equidistantly on the outside of the rotating shaft (58).

4. A low-temperature production system for removing fishy smell and retaining freshness of fish maw according to claim 3, characterized in that: Positioning plates (510) are symmetrically sleeved and installed on both sides of the rotating shaft (58), and a column (511) is embedded and installed at one end of the positioning plate (510), and the column (511) is fixedly installed inside the barrier cover (2).

5. The low-temperature production system for removing fishy smell and retaining freshness of fish maw according to claim 3, characterized in that: The outer surface of the rotating seat (517) is sleeved with a connecting belt (514) at a position on one side of the belt connecting structure (57), and a rotating column (515) is connected between the two connecting belts (514) and is rotatably connected to the barrier cover (2), and a cam (516) is clamped and installed in the middle of the outer surface of the rotating column (515).

6. A low-temperature production system for removing fishy smell and retaining freshness of fish maw according to claim 1, characterized in that: A pressing assembly (6) is fixedly installed inside the barrier cover (2), and the pressing assembly (6) comprises a fixing frame (61) symmetrically fixedly installed inside the barrier cover (2), a horizontal bar (62) is symmetrically clamped and installed between the two fixing frames (61), a positioning column (63) is clamped and installed between the two fixing frames (61) at a position on one side of the horizontal bar (62), and a pressing roller (64) is rotatably connected between the bottom ends of the inner walls of the two fixing frames (61).

7. A low-temperature production system for removing fishy smell and retaining freshness of fish maw according to claim 6, characterized in that: The bottom end of the horizontal bar (62) is symmetrically mounted with spring columns (65), a lifting frame (66) is mounted between the bottom ends of the two spring columns (65), a bottom plate (67) is welded to the middle of the bottom end of the lifting frame (66), and a squeezing roller (68) is rotatably connected inside the bottom plate (67).

8. The low-temperature production system for removing fishy smell and retaining freshness of fish maw according to claim 1, characterized in that: The spray assembly (7) comprises a water storage tank (71) fixedly mounted on one side of the barrier cover (2) and the placement rack (1); a water pump (72) is installed inside the water storage tank (71); a water outlet of the water pump (72) and the bottom end of the inner wall of the water storage tank (71) are both installed with a connecting pipe (73); a return hood (75) is fixedly mounted on one end of the connecting pipe (73) located at the bottom end of the water storage tank (71), and the return hood (75) is located inside the placement rack (1); the highest point of the return hood (75) and the horizontal plane is lower than the lowest point of the conveyor belt (4) and the horizontal plane; a shower head (74) is installed on one end of the connecting pipe (73) located at the water outlet of the water pump (72), and the shower head (74) is located at the top end of the inner wall of the barrier cover (2).

9. The low-temperature production system for removing fishy smell and retaining freshness of fish maw according to claim 1, characterized in that: The following steps are involved: Step 1: Raw material processing: First, the fish maw is cleaned, screened and processed to remove impurities and foreign matter. Step 2: Pre-cooling: the processed fish maw is placed on the placement rack (1) and transported into the barrier cover (2) via the conveyor belt (4), and then the cold air from the outside enters the barrier cover (2) to allow the fish maw to be quickly pre-cooled in a low-temperature environment and turned over by the turning component (5) during cooling, and at the same time, flattened by the pressing component (6); Step 3: Low-temperature soaking: The conveyor belt (4) transports the fish maw to the inside of the spray assembly (7), and the low-temperature water in the spray assembly (7) is sprayed on the surface of the fish maw; Step 4: Low-temperature drying / freezing: After the fish maw has been deodorized, it is properly pasteurized and then processed by low-temperature drying or freezing. Step 5: Packaging and transportation: The fish maw processed as above is quickly cooled and then vacuum packed.

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