Preservation method and preservation device of enzymolysis fish steak powder

Abstract

The invention provides a preservation method and a preservation device of enzymolysis fish steak powder, the preservation method is as follows: formic acid and sodium chloride are added into the enzymolysis fish steak powder, the mass percent of the enzymolysis fish steak powder, the mass percent of the formic acid and the mass percent of the sodium chloride are 91-94%, 3-5% and 3-6%, preferably, the mass percent of the enzymolysis fish steak powder is 94%, 3% and 3%. By adding formic acid and sodium chloride, mildewing and deterioration of the enzymolysis fish steak powder can be avoided, the preservation time is prolonged, and the quality of the enzymolysis fish steak powder is ensured, so that the preservation problem of the enzymolysis fish steak powder and fish cream products is solved. Meanwhile, the device is used for repeatedly stirring the enzymolysis fish steak powder, formic acid and sodium chloride in the tank body up and down, so that the formic acid and the sodium chloride sprayed to the lower part of the tank body are repeatedly fished out and pressed down, and the formic acid and the sodium chloride can be fully mixed with the enzymolysis fish steak powder in the tank body.

Description

Technical Field

[0001] The invention relates to the technical field of feed preservation, in particular to a preservation method and a preservation device for enzymatically hydrolyzed fish fillet powder. Background Art

[0002] With the development of aquaculture, the total amount of aquatic feed is increasing year by year, while the output of fish meal remains basically unchanged, resulting in the increasingly prominent contradiction of insufficient fish meal supply. Therefore, improving the utilization efficiency of marine fish as feed products, reducing the use of fish meal in artificial compound feeds, and finding new fish meal substitutes have become important topics that need to be studied urgently. Among them, enzymatic protein raw materials are increasingly receiving attention. Enzymatic fish paste is made from whole fish of small fish caught in the ocean. After mincing, exogenous proteases are added or the enzymes in the raw materials are used. After enzymatic hydrolysis and reduced pressure concentration, it is made into a paste product with a moisture content of 42% to 46%.

[0003] Since the water content of paste products is relatively high, currently, the storage time is mainly extended by adding acid, sodium chloride, mildew inhibitor, antioxidant, etc. to ensure product quality, but the effect is not ideal. Therefore, the present invention provides a storage method for fish paste products such as enzymatic fish fillet powder (liquid) to extend the storage time, prevent the enzymatic fish fillet powder from becoming moldy and deteriorating, and ensure product quality. Summary of the invention

[0004] In view of the deficiencies raised by the above background technology, the present invention provides a method and a device for preserving enzymatically hydrolyzed fish fillet powder.

[0005] The present invention adopts the following technical solution: In a first aspect, the present invention provides a method for preserving enzymatically hydrolyzed fish fillet powder, the method comprising adding formic acid and sodium chloride to the enzymatically hydrolyzed fish fillet powder and then sealing and storing the mixture, wherein the mass percentages of the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride are: Enzymatic fish fillet powder 91%-94%, formic acid 3%-5%, sodium chloride 3%-6%.

[0006] In a possible implementation of the first aspect, the mass percentages of enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride are: 94% enzymatically hydrolyzed fish fillet powder, 3% formic acid and 3% sodium chloride.

[0007] In a second aspect, the present invention provides a storage device using the above storage method, the storage device comprising: A tank body, wherein the enzymatically hydrolyzed fish fillet powder is contained in the tank body; A spray pipe, wherein the lower end of the spray pipe is provided with spray holes on an annular surface, and the lower end of the spray pipe extends into the tank body, and the upper end of the spray pipe is located outside the tank body for injecting formic acid and sodium chloride; A toggle assembly, the toggle assembly is arranged in the tank body, the toggle assembly includes a connecting frame, a first swing rod, a second swing rod, a toggle plate, a lifting nest and a pivot member, the connecting frame is fixed on the upper part of the tank body, the spray pipe passes through the lifting nest, and the lifting nest is lifted and lowered vertically relative to the tank body, a plurality of groups of the first swing rod, the second swing rod and the toggle plate are annularly distributed in the tank body, the upper end of the first swing rod is pivotally connected to the pivot member and the connecting frame in sequence, the pivot member is pivotally connected to the lifting nest, the lower end of the first swing rod is pivotally connected to the toggle plate, and the upper and lower ends of the swing rod are pivotally connected to the connecting frame and the toggle plate respectively; Among them, when the lifting nest rises, the lifting nest pulls the upper end of the first swing rod upward, drives each of the paddles to swing downward to surround the spray pipe, and at the same time presses the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride downward; when the lifting nest descends, the lifting nest pushes the upper end of the first swing rod downward, drives each of the paddles to swing upward, and at the same time scoops the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride upward.

[0008] In a possible implementation of the second aspect, the connecting frame includes a folding plate, a fixing bolt and a connecting rod, the two ends of the folding plate are bent to form a connecting portion, the upper end in the middle of the folding plate and the top of the tank body are connected and fixed by the connecting rod, and the upper and lower ends of the connecting portions of two adjacent folding plates are surrounded by multiple folding plates and connected by the fixing bolts.

[0009] In a possible implementation of the second aspect, the first swing arm and the second swing arm are further provided between two adjacent folding plates, and the upper fixing bolt passes through the first swing arm, and the lower fixing bolt passes through the second swing arm.

[0010] In a possible implementation of the second aspect, a mounting seat is also fixed above the tank body, a clearance hole is formed through the center of the mounting seat, a connecting tube is fixed above the lifting nest, and the connecting tube passes through the clearance hole to the outside of the tank body; the toggle assembly also includes a drive cylinder, the drive cylinder has a telescopic rod, and the telescopic rod of the drive cylinder and the part of the connecting tube that passes through the outside of the tank body are fixedly connected.

[0011] In a possible implementation of the second aspect, the toggle assembly further includes an extension plate, which is located under the toggle plate and slides relative to the toggle plate, and a distance between rotation axes of the first rocker arm, the connecting frame, and the toggle plate is greater than a distance between rotation axes of the second rocker arm, the connecting frame, and the toggle plate.

[0012] In a possible implementation of the second aspect, guide rods are fixed on both sides of the bottom surface of the shift plate, and sliding sleeves are fixed on both sides of the upper surface of the extension plate, and the two sliding sleeves are respectively adapted to fit outside the two guide rods.

[0013] In a possible implementation manner of the second aspect, the first swing rod and the second swing rod are both connected in the middle of the dial plate, and both sides of the dial plate are bent upward.

[0014] In a possible implementation manner of the second aspect, a three-way pipe is fixed to the upper end of the spray pipe, and the other two ports of the three-way pipe are respectively used for inputting formic acid and sodium chloride.

[0015] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages: the preservation method of the present invention can prevent the enzymatically hydrolyzed fish fillet powder from becoming moldy and deteriorating, prolong the storage time and ensure the quality of the enzymatically hydrolyzed fish fillet powder by adding formic acid and sodium chloride, thereby solving the preservation problem of enzymatically hydrolyzed fish fillet powder and fish paste products. At the same time, the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride in the tank body are repeatedly stirred up and down by the device of the present invention, so that the formic acid and sodium chloride sprayed to the bottom of the tank body are repeatedly scooped up and pressed down, which is conducive to promoting the formic acid and sodium chloride to be fully mixed with the enzymatically hydrolyzed fish fillet powder in the tank body. Compared with the traditional rotating stirring method, it is more conducive to the full fusion of formic acid and sodium chloride with the enzymatically hydrolyzed fish fillet powder on the upper part of the tank body, thereby helping to increase the storage time of the enzymatically hydrolyzed fish fillet powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the device of the present invention.

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the device of the present invention.

[0018] Figure 3 for Figure 2 A is an enlarged schematic diagram.

[0019] Figure 4 for Figure 2 Schematic diagram of the enlarged view at B.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the spray pipe passing through the connecting frame.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the toggle assembly after the toggle plate swings downward.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the toggle assembly after the toggle plate is swung upward to about half the height.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the toggle assembly after the toggle plate swings upward.

[0024] Fig. 9 This is a schematic diagram of the structure from the front perspective of the extension plate set under the paddle plate.

[0025] Fig.10 for Fig. 9 Schematic diagram of the cross section in the CC direction.

[0026] Fig.11 for Fig.10 Schematic diagram of the enlarged view at D in the middle.

[0027] Fig.12 A three-dimensional schematic diagram of the paddle from an upward perspective.

[0028] Fig.13 It is a three-dimensional schematic diagram of the extension plate from a top-down perspective. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0030] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0031] In addition, in the present application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0032] The present invention provides a method for preserving enzymatically hydrolyzed fish fillet powder, which comprises adding formic acid and sodium chloride to the enzymatically hydrolyzed fish fillet powder, mixing them evenly, and then sealing and storing them. The mass percentages of the enzymatically hydrolyzed fish fillet powder, formic acid, and sodium chloride are: 91% to 94% of enzymatically hydrolyzed fish fillet powder, 3% to 5% of formic acid, and 3% to 6% of sodium chloride, preferably 94% of enzymatically hydrolyzed fish fillet powder, 3% of formic acid, and 3% of sodium chloride.

[0033] The test scheme for preserving enzymatic fish fillet powder of the present invention is as follows: On the same day (June 9), enzymatic fish fillet powder was produced once and divided into 5 groups, namely control group, experimental group a, experimental group b, experimental group c and experimental group d. And the barrels of each group were added or not added with relevant samples, as follows: Control group: nothing was added to the enzymatic solution; Experimental group a: 3% citric acid and 3% formic acid were added to the enzymatic hydrolysate; Experimental group b: 6% sodium chloride was added to the enzymatic solution; Experimental group c: 4% sodium chloride was added to the enzymatic solution; Experimental group d: 2% formic acid and 2% sodium chloride were added to the enzymatic hydrolysate.

[0034] After one month of storage, the following table was prepared after testing the enzymatic fish fillet powder in each group of barrels:

[0035] As can be seen from the above table, the control group began to stink and rot on the sixth day. As time went on, the VBN index of experimental groups b, c, and d continued to increase. On June 21, a slight stink and rotten smell began to appear until all three groups stink, while experimental group a did not show obvious stink and rotten smell. Conclusion: The index of experimental group a (3‰ formic acid + 3‰ citric acid) is stable and the taste does not change, and it can be stored for more than 45 days. It can be seen that the preservation scheme of the present invention can prevent the enzymatic fish fillet powder from mold and deterioration, extend the storage time and ensure the quality of the enzymatic fish fillet powder, thereby solving the preservation problem of enzymatic fish fillet powder (liquid) and fish paste products.

[0036] The present invention also provides a storage device using the above-mentioned storage method of enzymatically hydrolyzed fish fillet powder, such as the attached Figure 1 and 2 As shown, the storage device includes a tank body 1, a spray pipe 2 and a toggle assembly. The tank body 1 is used to hold the enzymatically hydrolyzed fish fillet powder, and the toggle assembly is arranged in the tank body 1. The lower end of the spray pipe 2 is annularly distributed with spray holes 201, and the lower end of the spray pipe 2 passes through the toggle assembly and extends into the tank body 1. The upper end of the spray pipe 2 is located outside the tank body 1 for injecting formic acid and sodium chloride. Preferably, a mounting frame 11 is fixed on the top of the tank body 1, and the spray pipe 2 is fixed to the mounting frame 11 after extending out of the tank body 1.

[0037] As attached Figures 2 to 4 As shown in FIG. 1 , the toggle assembly includes a connecting frame 31, a first swing rod 32, a second swing rod 33, a toggle plate 34, a lifting nest 35, a pivot member 36 and a drive cylinder 37. Figure 5 The connecting frame 31 includes a folding plate 311, a fixing bolt 312 and a connecting rod 313. The two ends of the folding plate 311 are bent to form a connecting portion 3111. The upper end of the middle of the folding plate 311 is connected and fixed to the top of the tank body 1 by the connecting rod 313, and multiple folding plates 311 are connected and surrounded in this way in the tank body 1. Furthermore, an annular mounting seat 314 is also fixed on the top of the tank body 1, and the upper ends of the connecting rods 313 are fixed to the mounting seat 314 in an annular distribution, thereby forming a structure in which multiple folding plates 311 are fixed around the top of the tank body 1. In addition, the upper and lower ends of the connecting portion 3111 of two adjacent folding plates 311 are also penetrated with fixing bolts 312 for connection.

[0038] Continue to refer to the attached Figure 3, a clearance hole (not marked in the figure) is formed through the center of the mounting seat 314, a connecting pipe 351 is fixed above the lifting nest 35, the connecting pipe 351 passes through the clearance hole to the outside of the tank body 1, and the spray pipe 2 passes through the connecting pipe 351 and the lifting nest 35 to the bottom located inside the tank body 1. A driving cylinder 37 is fixed outside the tank body 1, and the driving cylinder 37 can be fixed to the mounting frame 11, and the driving cylinder 37 can be a power actuator with a telescopic rod such as a cylinder or an oil cylinder. The telescopic rod of the driving cylinder 37 is fixedly connected to one side of the part of the connecting pipe 351 that passes through the outside of the tank body 1, so that the driving cylinder 37 drives the lifting nest 35 to rise and fall vertically along the spray pipe 2 in the tank body 1. In addition, a sealing ring can be embedded and fixed in the clearance hole to seal the gap between the connecting pipe 351 and the clearance hole, thereby improving the airtightness in the tank body 1. Similarly, a sealing ring can also be fixed to the spray pipe 2 in the connecting pipe 351 to seal the gap between the spray pipe 2 and the connecting pipe 351.

[0039] As attached Figures 6 to 8 As shown, a linkage mechanism formed by multiple groups of first swing rods 32, second swing rods 33 and dial plates 34 is distributed in an annular manner in the tank body 1, and a first swing rod 32 and a second swing rod 33 are also arranged between two adjacent folding plates 311. The upper end of the first swing rod 32 is pivotally connected to the pivot member 36 and the connecting frame 31 in sequence. The end of the pivot member 36 away from the first swing rod 32 is pivotally connected to the lifting nest 35, the lower end of the first swing rod 32 is pivotally connected to the dial plate 34, and the upper and lower ends of the second swing rod 33 are pivotally connected to the connecting frame 31 and the dial plate 34 respectively. At the same time, the rotation axis center spacing of the first swing rod 32, the connecting frame 31 and the dial plate 34 is greater than the rotation axis center spacing of the second swing rod 33, the connecting frame 31 and the dial plate 34. The pivoting in this embodiment can be as follows Figure 3 As shown, the fixing bolt 312 located at the top passes through the first swing rod 32 so that the first swing rod 32 and the connecting frame 31 are pivotally connected, and the fixing bolt 312 located at the bottom passes through the second swing rod 33 so that the second swing rod 33 and the connecting frame 31 are pivotally connected, that is, the two parts pivotally connected to each other can be connected by passing the fixing bolt 312 so that the two parts pivotally connected to each other can rotate relative to each other. In the above structure in which the first swing rod 32 and the second swing rod 33 are connected to the dial plate 34, the first swing rod 32 is used to drive the dial plate 34 to swing, and the second swing rod 33 is used to form a traction on the dial plate 34 so that the dial plate 34 will not flip downward to a vertical position relative to the first swing rod 32.

[0040] As attached Figures 6 to 8As shown, a three-way pipe 21 is fixed to the upper end of the spray pipe 2, and the other two ports of the three-way pipe 21 are used to input formic acid and sodium chloride respectively. Specifically, formic acid and sodium chloride can be respectively contained in two containers, and the bottoms of the two containers are connected to the other two ports of the three-way pipe 21 through pipes, and pumps and screw conveyors can be respectively set at the bottoms of the two containers to transport formic acid and sodium chloride, so as to transport formic acid and sodium chloride into the three-way pipe 21, and then spray into the tank body 1 through the spray hole 201 at the bottom of the spray pipe 2 to the inside of the enzymatically hydrolyzed fish fillet powder. Refer to the attached Figure 1 and 2 A feed port 101 may be provided on the top of the tank body 1 for injecting the enzymatically hydrolyzed fish fillet powder into the tank body 1 for storage, and a discharge port 102 may be provided on the lower side of the tank body 1 for discharging the enzymatically hydrolyzed fish fillet powder stored in the tank body 1. Valves may be provided at the feed port 101 and the discharge port 102 to control the opening and closing of the feed port 101 and the discharge port 102.

[0041] Preferably, the device of the present invention may also be equipped with a control system, which may be a PLC controller for controlling the operation of the pump, the screw conveyor and the drive cylinder 37. Specifically, the early stage of storing enzymatically hydrolyzed fish fillet powder using the device of the present invention is as follows: Injecting the enzymatically hydrolyzed fish fillet powder into the tank 1; Formic acid and sodium chloride are input into the spray pipe 2, and the formic acid and sodium chloride are ejected from the spray hole 201 into the enzymatically hydrolyzed fish fillet powder in the tank body 1; The telescopic rod of the driving cylinder 37 extends downward to drive the lifting nest 35 to descend, so that the lifting nest 35 pushes the upper end of each first swing rod 32 downward. During this swinging process, the second swing rod 33 swings accordingly, driving the paddle 34 to move upward, so that the paddle 34 scoops up the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride while moving upward. Then, the telescopic rod retracts upward to drive the lifting nest 35 to rise. The lifting nest 35 pulls the upper end of each first swing rod 32 upward. During this swinging process, the second swing rod 33 swings accordingly, driving each paddle 34 to swing downward. At the same time, the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride are pressed downward, and the paddles 34 are driven to swing downward until they are surrounded by the spray pipe 2. In this way, the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride in the tank body 1 are repeatedly stirred up and down through the reciprocating lifting of the lifting nest 35, so that the formic acid and sodium chloride sprayed to the bottom of the tank body 1 are repeatedly scooped up and pressed down, which is conducive to promoting the full mixing of formic acid and sodium chloride with the enzymatically hydrolyzed fish fillet powder in the tank body 1. Compared with the traditional rotational stirring method, it is more conducive to the full fusion of formic acid and sodium chloride with the enzymatically hydrolyzed fish fillet powder on the upper part of the tank body 1.

[0042] Continue to refer to the attached Figures 6 to 8The first swing arm 32 and the second swing arm 33 are both connected to the middle of the paddle 34, and the structure of the paddle 34 can be a structure in which the middle of a flat plate is bent upward on both sides, so that a groove structure is formed in the middle of the upper surface of the paddle 34, and a downward convex angle is formed in the middle of the lower surface of the paddle 34. When the paddle 34 moves upward, the groove structure of the paddle 34 is more conducive to scooping up the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride, and when the paddle 34 moves downward, the angle formed in the middle of the paddle 34 surface can form a guiding effect, which is conducive to inserting the paddle 34 into the enzymatically hydrolyzed fish fillet powder.

[0043] Furthermore, the toggle assembly further includes an extension plate 38, and each toggle plate 34 is provided with an extension plate 38, and the extension plate 38 is also a structure with both sides bent upward. The extension plate 38 also slides relative to the toggle plate 34, and its sliding structure can be as shown in the attached Figures 9 to 13 As shown, guide rods 391 are fixed on both sides of the bottom surface of the dial plate 34, and the two ends of the guide rods 391 can be fixed under the dial plate 34 by welding the fixing parts 392. Slide sleeves 393 are fixed on both sides of the upper surface of the extension plate 38, and the two slide sleeves 393 are respectively fitted on the outside of the two guide rods 391. In the structure where the extension plate 38 is arranged under the dial plate 34, as shown in the attached figure, Figure 7 As shown, when the first swing arm 32 drives the paddle plate 34 to swing upward, the paddle plate 34 can slide downward to the outside of the paddle plate 34 under the action of its own weight, so as to automatically expand the area for scooping up the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride, and when the paddle plate 34 presses the enzymatically hydrolyzed fish fillet powder downward, the extension plate 38 extending from the paddle plate 34 can also increase the area of ​​the enzymatically hydrolyzed fish fillet powder pressed down, and when each paddle plate 34 swings downward and toward the middle of the spray pipe 2, the ends of each extension plate 38 block each other and are automatically pushed back to the bottom of the paddle plate 34 as the paddle plate 34 moves. Preferably, a spring 394 can be sleeved on the guide rod 391, and the two ends of the spring 394 are respectively located between the fixed part 392 and the sliding sleeve 393 at the end of the guide rod 391. The elastic force of the spring 394 is used to push the extension plate 38 out from under the dial plate 34, and when each dial plate 34 swings downward, the ends of each extension plate 38 can also block each other and automatically push back under the dial plate 34 as the dial plate 34 moves, while compressing the spring 394.

[0044] In summary, the preservation method of the present invention can prevent the enzymatically hydrolyzed fish fillet powder from becoming moldy and deteriorating, prolong the storage time, and ensure the quality of the enzymatically hydrolyzed fish fillet powder by adding formic acid and sodium chloride, thereby solving the preservation problem of enzymatically hydrolyzed fish fillet powder (liquid) and fish paste products. At the same time, the enzymatically hydrolyzed fish fillet powder, formic acid, and sodium chloride in the tank body 1 are repeatedly stirred up and down by the device of the present invention, so that the formic acid and sodium chloride sprayed to the bottom of the tank body 1 are repeatedly scooped up and pressed down, which is conducive to promoting the formic acid and sodium chloride to be fully mixed with the enzymatically hydrolyzed fish fillet powder in the tank body 1. Compared with the traditional rotating stirring method, it is more conducive to the full fusion of formic acid and sodium chloride with the enzymatically hydrolyzed fish fillet powder on the upper part of the tank body 1, thereby helping to increase the storage time of the enzymatically hydrolyzed fish fillet powder.

[0045] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A method for preserving enzymatically hydrolyzed fish fillet powder, characterized in that: The preservation method comprises adding formic acid and sodium chloride to the enzymatically hydrolyzed fish fillet powder and then sealing and storing the mixture, and the mass percentages of the enzymatically hydrolyzed fish fillet powder, the formic acid and the sodium chloride are: Enzymatic fish fillet powder 91%-94%, formic acid 3%-5%, sodium chloride 3%-6%.

2. The storage method according to claim 1, characterized in that The mass percentages of enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride are: enzymatically hydrolyzed fish fillet powder 94%, formic acid 3%, and sodium chloride 3%.

3. A storage device using the storage method according to claim 1 or 2, characterized in that: The storage device comprises: A tank body, wherein the enzymatically hydrolyzed fish fillet powder is contained in the tank body; A spray pipe, wherein the lower end of the spray pipe is provided with spray holes on an annular surface, and the lower end of the spray pipe extends into the tank body, and the upper end of the spray pipe is located outside the tank body for injecting formic acid and sodium chloride; A toggle assembly, the toggle assembly is arranged in the tank body, the toggle assembly includes a connecting frame, a first swing rod, a second swing rod, a toggle plate, a lifting nest and a pivot member, the connecting frame is fixed on the upper part of the tank body, the spray pipe passes through the lifting nest, and the lifting nest is lifted and lowered vertically relative to the tank body, a plurality of groups of the first swing rod, the second swing rod and the toggle plate are annularly distributed in the tank body, the upper end of the first swing rod is pivotally connected to the pivot member and the connecting frame in sequence, the pivot member is pivotally connected to the lifting nest, the lower end of the first swing rod is pivotally connected to the toggle plate, and the upper and lower ends of the swing rod are pivotally connected to the connecting frame and the toggle plate respectively; Among them, when the lifting nest rises, the lifting nest pulls the upper end of the first swing rod upward, drives each of the paddles to swing downward to surround the spray pipe, and at the same time presses the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride downward; when the lifting nest descends, the lifting nest pushes the upper end of the first swing rod downward, drives each of the paddles to swing upward, and at the same time scoops the enzymatically hydrolyzed fish fillet powder, formic acid and sodium chloride upward.

4. The storage device according to claim 3, characterized in that The connecting frame includes a folding plate, a fixing bolt and a connecting rod. The two ends of the folding plate are bent to form a connecting portion. The upper end in the middle of the folding plate and the top of the tank body are connected and fixed by the connecting rod. Multiple folding plates are surrounded and the upper and lower ends of the connecting portions of two adjacent folding plates are both equipped with the fixing bolts for connection.

5. The storage device according to claim 4, characterized in that The first swing rod and the second swing rod are further arranged between two adjacent folding plates, and the upper fixing bolt passes through the first swing rod, and the lower fixing bolt passes through the second swing rod.

6. The storage device according to claim 4 or 5, characterized in that: A mounting seat is also fixed above the tank body, a clearance hole is formed through the center of the mounting seat, a connecting pipe is fixed above the lifting nest, and the connecting pipe passes through the clearance hole to the outside of the tank body; the toggle assembly also includes a driving cylinder, the driving cylinder has a telescopic rod, and the telescopic rod of the driving cylinder is fixedly connected to the part of the connecting pipe that passes through the outside of the tank body.

7. The storage device according to claim 3, characterized in that The toggle assembly also includes an extension plate, which is located under the toggle plate and slides relative to the toggle plate. The distance between the rotation axes of the first swing arm, the connecting frame and the toggle plate is greater than the distance between the rotation axes of the second swing arm, the connecting frame and the toggle plate.

8. The storage device according to claim 7, characterized in that Both sides of the bottom surface of the shifting plate are fixed with guide rods, and both sides of the upper surface of the extension plate are fixed with sliding sleeves, and the two sliding sleeves are respectively adapted to fit outside the two guide rods.

9. The storage device according to any one of claims 3, 7 and 8, characterized in that The first swing rod and the second swing rod are both connected to the middle of the dial plate, and both sides of the dial plate are bent upward.

10. The storage device according to claim 3, characterized in that A three-way pipe is fixed on the upper end of the spray pipe, and the other two ports of the three-way pipe are used for inputting formic acid and sodium chloride respectively.

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