A kind of rapid freezing production equipment for offshore processing ship

Abstract

The present invention relates to the technical field of rapid freezing equipment, specifically to a rapid freezing production equipment carried on an offshore processing ship, comprising a tank body, the tank body is divided into a feeding end and a discharging end, the vacuum packaging unit is located on a side close to the feeding end of the tank body, a conveyor belt device is installed in the tank body, openings for the conveyor belt device to enter and exit are symmetrically opened on the tank body, a plurality of partitions are evenly installed on the conveyor belt device, freezing liquid is stored in the tank body, a perforated plate is installed in the tank body to ensure that the seafood is always below the liquid level of the freezing liquid, a packaging unit is provided on one side of the discharging end of the tank body, and a stabilizing device is installed in the tank body. The present invention installs a stabilizing device in the tank body, and when the hull shakes, the stabilizing device reduces the shaking of the freezing liquid due to inertia and prevents the freezing liquid from splashing, so as to solve the problem of uneven heat exchange of seafood in the freezing liquid and freezing liquid splashing out of the tank body when the ship shakes, causing waste.

Description

Technical Field

[0001] The invention relates to the technical field of rapid freezing equipment, in particular to rapid freezing production equipment carried on an offshore processing ship. Background Art

[0002] At present, shipboard refrigeration has liquid ammonia refrigeration technology and Freon refrigeration technology. Freon is expensive and causes environmental pollution, while liquid nitrogen refrigeration has a low safety factor and is prone to explosion. Therefore, at present, shipboard refrigeration mainly uses freezing liquid for immersion freezing. Immersion freezing requires a water tank to be installed in the hull to hold the freezing liquid, and the freezing is carried out by exchanging heat between the freezing liquid and the seafood. The steps of immersion freezing generally include 2℃ seawater precooling - vacuum tray packaging - transport through a conveyor belt device into the freezing liquid - air drying and blowing the freezing liquid remaining on the surface of the vacuum packaging after freezing - vacuum packaging and boxing - storage in a cold storage.

[0003] However, the situation at sea is often changing rapidly. Ships often have to experience various winds and waves at sea, and in severe cases, winds and waves can even reach level 12. When a ship encounters wind and waves, the hull will shake significantly. At this time, the refrigerant in the tank can easily spill out due to inertia, causing waste; and when the refrigerant shakes, it may cause uneven heat exchange of the seafood in the refrigerant, resulting in the failure to achieve the desired freezing effect within the specified time, affecting the subsequent storage of seafood.

[0004] Therefore, a rapid freezing production equipment for offshore processing on board is proposed. Summary of the invention

[0005] The object of the present invention is to provide a rapid freezing production equipment for offshore processing ships. By installing a floating plate, a water baffle and a lifting plate in the tank body, when the hull shakes, the floating plate and the water baffle will reduce the shaking of the refrigerant in the tank body, and the lifting plate will prevent the refrigerant from splashing out of the tank body, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A marine processing ship-borne rapid freezing production equipment, comprising:

[0008] A vacuum packaging unit, wherein the vacuum packaging device is used to seal the seafood package;

[0009] A tank body, wherein the tank body is divided into a feeding end and a discharging end, the vacuum packaging unit is located on a side close to the feeding end of the tank body, a conveyor belt device is installed in the tank body, openings for the conveyor belt device to enter and exit are symmetrically opened on the tank body, a plurality of partitions are evenly installed on the conveyor belt device, a freezing liquid is stored in the tank body, a double-layer stainless steel baffle for heat preservation is fixedly installed in the middle of the inner wall of the tank body, and a perforated plate is installed in the tank body for ensuring that the seafood is always below the liquid level of the freezing liquid;

[0010] A packaging unit is provided at one side of the discharging end of the tank body, and the packaging unit is used to pack a plurality of frozen seafood into boxes;

[0011] Also includes:

[0012] A stabilizing device is installed in the tank body, and the stabilizing device is used to reduce the shaking of the freezing liquid when the hull shakes, so that the seafood is always below the liquid level of the freezing liquid.

[0013] The existing immersion freezing is carried out in a tank filled with freezing liquid. First, the operator vacuum packs the seafood, then places the packaged seafood on a pallet, and then places the pallet on the conveyor belt of the tank through a conveyor device. The partition on the conveyor belt will separate each pallet to prevent the pallet from slipping and colliding with the previous pallet when entering the inclined section of the conveyor belt. Under the action of the conveyor belt and the partition, the pallet and the seafood will gradually sink below the surface of the freezing liquid. In order to prevent the pallet from floating up, a plurality of through holes are usually provided at the bottom of the pallet. At the same time, in order to prevent the seafood from partially floating above the surface of the freezing liquid when immersed in the freezing liquid, a layer of orifice plates is installed in the tank to limit the position of the seafood. The seafood that enters below the liquid surface will exchange heat with the freezing liquid, causing the temperature of the seafood to drop rapidly. After 30 minutes, the temperature of the seafood drops to -30℃. At this time, the pallet will gradually leave the freezing liquid under the action of the conveyor belt. Finally, the seafood will be uniformly packed and packaged, and then stored in a cold storage.

[0014] However, the freezing liquid is composed of glycerin and alcohol, and its overall form is liquid when working. Therefore, when the hull encounters wind and waves, the tank will shake synchronously with the ship, and the coolant in the tank will also shake violently under the action of inertia, which will cause the freezing liquid in the tank to tilt, causing some seafood to be exposed above the freezing liquid level. Although the seafood is exposed for a short time each time the ship shakes, if the ship shakes for a long time, the accumulated time will cause the seafood to be unable to cool down to -30℃ through heat exchange within the specified time, affecting the preservation quality of the seafood. At the same time, the violently shaking freezing liquid may splash out of the tank from the inlet and outlet of the conveyor belt and the tank, resulting in a waste of freezing liquid.

[0015] Therefore, the present invention installs a stabilizing device in the cover tank body to reduce the shaking of the freezing liquid when the hull shakes, ensure the effect of immersion freezing, and prevent the waste of freezing liquid.

[0016] Preferably, the stabilizing device includes a vertical stabilizing unit, a horizontal stabilizing unit and a closing unit. The vertical stabilizing unit includes a floating plate slidably mounted on the inner wall of the trough body, and the floating plate can float and shake with the refrigerant. The bottom wall of the floating plate is connected to the horizontal stabilizing unit. The trough body opening is provided with a closing unit for shielding the refrigerant from splashing. The cavity height of the trough body is three times the liquid level height of the refrigerant.

[0017] The stabilization device consists of three parts, namely the horizontal stabilization unit, the vertical stabilization unit and the closing unit. The horizontal stabilization unit is used to reduce the shaking of the cooling liquid in the horizontal direction, the vertical stabilization unit is used to reduce the shaking of the cooling liquid in the direction perpendicular to the bottom wall of the tank, and the closing unit is used to prevent the cooling liquid from splashing out of the tank without hindering the advancement of seafood. Through the joint action of the three units, when encountering wind and waves less than or equal to the set value level, the cooling liquid in the tank will still be in a relatively stable state.

[0018] The vertical stabilization unit is a floating plate installed movably in the tank. The floating plate can be a hollow foam steel plate. The density of this plate is lower than that of the freezing liquid, so it can float on the surface of the freezing liquid. When the freezing liquid shakes, the floating plate will shake with the freezing liquid, absorb part of the momentum of the freezing liquid, and reduce the shaking of the freezing liquid. At the same time, in order to prevent the freezing liquid from spilling out of the tank when shaking, after many verifications, when the tank cavity height is three times the height of the freezing liquid level, that is, when the immersion freezing is working normally, the freezing liquid only occupies 1 / 3 of the tank volume. In this case, the tank is not easy to spill a large amount of freezing liquid when encountering wind and waves.

[0019] Preferably, a plurality of springs 1 are evenly installed at the bottom of the double-layer stainless steel baffle plate, the other end of the spring 1 is fixedly connected to the floating plate, a plurality of through holes are opened on the floating plate, a plurality of guide columns cooperating with the through holes are vertically installed on the double-layer stainless steel baffle plate close to the floating plate, the other end of the guide columns is located below the liquid level of the freezing liquid, and a limiting portion for preventing the spring 1 from being over-compressed is installed on the double-layer stainless steel baffle plate close to the floating plate, and the limiting portion includes any one of a cylinder, a rectangular parallelepiped, a drum-shaped body, and a truncated cone.

[0020] In order to prevent the floating plate from moving horizontally when floating with the freezing liquid, causing the floating plate to collide with the seafood on the conveyor belt and cause damage to both. Therefore, multiple through holes are opened on the floating plate, and multiple guide columns are vertically installed on the side of the double-layer stainless steel baffle plate close to the floating plate. The guide columns and the through holes are over-matched, so under the action of the guide columns and the through holes, the floating plate can only move up and down. At the same time, in order to prevent the guide columns from being separated from the through holes, the end of the guide column away from the double-layer stainless steel baffle plate will go deep below the freezing liquid level until it contacts the orifice plate. A spring 1 is installed between the double-layer stainless steel baffle plate and the floating plate. When the hull is in a stationary state, all springs 1 are in an initial state that is not compressed or stretched. When the floating plate shakes, spring 1 will be compressed, absorbing the kinetic energy of the freezing liquid and giving the floating plate a downward force to stabilize the freezing liquid and reduce the shaking of the freezing liquid.

[0021] In order to prevent the floating plate from being over-compressed due to the large moving distance when following the swaying of the freezing liquid, causing the spring 1 to be damaged and ineffective, the present invention installs a limiting part on the side of the double-layer stainless steel baffle close to the floating plate. The limiting part here can be any one of a rotating body or a non-rotating body such as a cylinder, a cuboid, a cube, etc. When the floating plate contacts the limiting part, it means that the wind and waves encountered by the ship have exceeded the set level. At this time, the operation of the refrigeration equipment should be stopped and the internal parts of the refrigeration equipment should be protected. Therefore, a proximity switch can be installed at one end of the limiting part close to the floating plate. When the floating plate contacts the limiting part, the proximity switch is triggered and the refrigeration equipment stops running.

[0022] The wind and wave setting level of the present invention is positively correlated with the selection of the spring one. The higher the wind and wave setting level is, the larger the spring elastic coefficient of the spring one that needs to be selected is.

[0023] Of course, the limit part can also be installed on the side of the floating plate close to the double-layer stainless steel baffle, which can increase the gravity of the floating plate and better stabilize the refrigerant. However, since the floating plate is made of a hollow foam board, the connection strength with the limit part is not high. After multiple collisions with the double-layer stainless steel baffle, the connection between the limit part and the floating plate may be damaged. Therefore, installing the limit part on the double-layer stainless steel baffle is a better choice.

[0024] Preferably, the horizontal stabilization unit includes a water baffle plate arranged in the trough body, the water baffle plate is located between the orifice plate and the floating plate, the water baffle plate is composed of a plurality of baffle plates perpendicular to each other, the water baffle plate is slidably installed in the trough body along the vertical direction through a slide groove, the water baffle plate is fixedly connected to the floating plate, an arc surface with a central angle of ninety degrees is provided on the side wall of the baffle plate, and the guide column and the water baffle plate are staggered with each other.

[0025] A water baffle is provided on the side of the floating plate close to the refrigerant. When the refrigerant shakes, the water baffle will hinder the movement of the refrigerant in the horizontal direction, thereby reducing the shaking of the refrigerant. Therefore, in order to enable the water baffle to cope with the shaking of the refrigerant in any direction on the horizontal plane, the water baffle is composed of a plurality of mutually perpendicular baffles. The water baffle here can be made of a material with a density greater than water and a higher strength, such as various alloy materials. The larger weight can reduce the possibility of the water baffle following the shaking of the refrigerant, and the larger strength can also prevent the water baffle from deforming and breaking under the repeated impact of the refrigerant. In order to prevent the water baffle from affecting the operation of the conveyor belt, the water baffle is located between the floating plate and the orifice plate. When the refrigerant shakes at a distance, due to the friction between the refrigerants and between the refrigerants and the tank body, the refrigerant will generate a large amount of heat, neutralizing the coldness of the refrigerant and reducing the utilization rate of the coldness in the refrigerant. Therefore, the water baffle can also improve the utilization rate of the coldness in the refrigerant.

[0026] At the same time, in order to reduce the load on the water baffle when it is impacted by the refrigerant, increase the life of the water baffle connector, and also increase the life of the tank body mounting parts, the present invention fixes the water baffle with the floating plate, and slides the water baffle into the tank body through the slide groove. When the ship is stationary, the water baffle will be at the lowest limit position of the slide groove. Under the action of the slide groove, the water baffle will not stretch the spring 1. The present invention provides an arc surface with a central angle of 90° on the side wall of the baffle. When the refrigerant shakes, the refrigerant that hits the baffle will move along the arc surface. Since the central angle of the arc surface is 90°, the horizontal kinetic energy of the refrigerant will be converted into vertical kinetic energy, thereby driving the floating plate to move, so that the spring 1 can absorb part of the energy and reduce the load on the water baffle and the tank body mounting parts.

[0027] In order to prevent the guide rod from colliding with the baffle when the floating plate is transferred, the guide column and the baffle are staggered with each other, and the guide column will not be located directly above the baffle.

[0028] Preferably, the closed unit includes a shell symmetrically installed at the inlet and outlet of the trough body and the conveyor belt device, the shell is provided with an opening for the seafood to pass through, a lifting plate is vertically slidably installed on the opening through spring 2, and an inverted cone-shaped inclined surface is provided on the side of the lifting plate close to the forward direction of the conveyor belt device, and the vertical height of the inclined surface is greater than or equal to the height of the seafood.

[0029] A shell is installed at the inlet and outlet of the conveyor belt and the tank body to block the inlet and outlet. When the seafood contacts the lifting plate with the conveyor belt, the seafood will contact the inclined surface of the lifting plate. The inclined surface will convert the horizontal thrust of the seafood on the lifting plate into a vertical thrust. Therefore, the lifting plate overcomes the elastic force of the second spring under the action of the seafood and moves away from the conveyor belt, and finally moves to the highest height of the seafood. At this time, the bottom of the lifting plate contacts the seafood. After the seafood passes through the lifting plate, due to the lack of support from the seafood, the lifting plate moves again towards the direction close to the conveyor belt under the action of the second spring, and finally closes the opening of the shell, waiting for the arrival of the next seafood, and then repeats the lifting and lowering movement. By closing the shell opening evenly, it can be prevented that when the refrigerant shakes, the splashing refrigerant flies out of the shell opening, causing waste of the refrigerant. At the same time, the lifting plate timely closes the shell outlet and can also reduce the air exchange between the inside of the tank and the outside, thereby reducing the rate of natural loss of the refrigerant cooling capacity and the rate of volatilization of the refrigerant, saving the energy consumption required for refrigeration and reducing the cost of using the refrigerant.

[0030] In order to prevent the seafood from contacting the vertical plane part of the lifting plate instead of the inclined surface first, which will cause the lifting plate to be unable to receive upward force and finally cause damage to the lifting plate and the conveyor belt partition, the vertical height of the inclined surface of the lifting plate is greater than or equal to the height of the seafood.

[0031] Preferably, a rolling part is rotatably installed at the bottom and inclined surface of the lifting plate to reduce the friction between the lifting plate and the seafood, and the rolling part includes any one of a cylinder, a sphere, and a drum-shaped body. Insulating material is installed on the shell and the side wall of the lifting plate to prevent the loss of cold water.

[0032] Generally speaking, the coefficient of sliding friction between two objects is greater than the coefficient of rolling friction. Therefore, a rolling part is installed on the inclined surface and bottom wall where the lifting plate contacts the seafood. The relative sliding between the seafood and the lifting plate is converted into relative rolling by the rolling part, which can reduce the force required for the seafood to push the lifting plate. At the same time, since the friction between the seafood and the lifting plate is reduced, the probability of the vacuum packaging of the seafood being scratched when it contacts the lifting plate can also be reduced. If the vacuum packaging of the seafood is scratched, the freezing liquid will directly contact the seafood, making the seafood inedible.

[0033] A layer of thermal insulation material, such as polyurethane foam, polystyrene board, EPS, etc., can be covered on the side walls of the shell and the lifting plate to further enhance the thermal insulation effect of the closed unit, reduce the loss of cold water of the refrigerant, and reduce the energy consumption of cooling the refrigerant.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. By installing a floating plate and a water baffle in the tank, the floating plate floats on the freezing liquid and sways with the freezing liquid, which can reduce the vertical swaying of the freezing liquid; the water baffle can hinder the flow of the freezing liquid in the horizontal direction and reduce the horizontal swaying of the freezing liquid. Through the cooperation of the two, when the ship encounters wind and waves, the freezing liquid in the tank will still remain in a relatively stable state, avoiding the problem that the seafood will not be exposed to the freezing liquid for a long time due to the swaying of the freezing liquid in the tank, resulting in the seafood not being able to drop to the specified temperature within the specified time, and reducing the impact of the external environment on the immersion freezing of the ship.

[0036] 2. By installing a spring 1 between the floating plate and the double-layer stainless steel baffle, the shaking of the refrigerant can be further absorbed and the stability of the refrigerant can be increased. At the same time, the water baffle is connected to the floating plate, and a circular arc surface with a central angle of 90° is provided on the side wall of the water baffle, which can convert part of the horizontal kinetic energy of the refrigerant into vertical kinetic energy, which is absorbed by the spring 1, reducing the load on the water baffle and the tank body fasteners and increasing the service life of the water baffle and the tank body fasteners.

[0037] 3. The water baffle and floating plate reduce the sloshing of the refrigerant, and also reduce the friction between the refrigerant and the tank body, thus avoiding the problem of the refrigerant generating a large amount of heat due to violent sloshing, which causes the utilization rate of the refrigerant to decrease. The lifting plate can prevent the refrigerant from splashing out of the tank body, and also reduce the air exchange between the tank body and the outside world, thus reducing the rate of natural loss of the refrigerant's cooling capacity and the rate of volatilization of the refrigerant, saving the energy consumption required for refrigeration, and reducing the cost of using the refrigerant. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 for Figure 1 Middle AA section view;

[0040] Figure 3 for Figure 1 Middle BB section view;

[0041] Figure 4 for Figure 1 Middle CC section view;

[0042] Figure 5 This is a schematic diagram of the structure of the lifting plate at the entrance of the tank body for seafood according to the present invention;

[0043] Figure 6 This is a schematic diagram of the lifting plate structure at the outlet of the tank where seafood leaves the tank according to the present invention;

[0044] Figure 7This is a schematic diagram of the lifting plate of the present invention when it is opened;

[0045] Figure 8 A partial cross-sectional view of a closed unit of the present invention;

[0046] Fig. 9 It is a schematic diagram of the bottom structure of the water retaining plate of the present invention.

[0047] In the figure: 1. trough body; 2. conveyor belt device; 3. partition; 4. refrigerant; 5. double-layer stainless steel baffle; 6. floating plate; 701. spring one; 702. spring two; 8. through hole; 9. guide column; 10. limit part; 11. water baffle; 12. shell; 13. lifting plate; 14. rolling part. DETAILED DESCRIPTION

[0048] The following will be combined with the appended Figures 1 to 9 , clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments of the present invention include but are not limited to the embodiments described below. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0049] The terms "first" and "second" appearing in this application are only used for the purpose of describing the order of objects, and are not used to indicate relative importance or to indicate the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. The term "plurality" appearing in this application means at least two.

[0050] See also Figures 1 to 9 The present invention provides a marine processing ship-borne rapid freezing production equipment, the technical scheme is as follows:

[0051] Embodiment 1: When the wind and wave level encountered by the vessel is less than or equal to the set value.

[0052] When the seafood follows the conveyor belt into and out of the trough body 1, when the seafood contacts the lifting plate 13 as the conveyor belt moves, the seafood will contact the inclined surface of the lifting plate 13, and the inclined surface will convert the horizontal thrust of the seafood on the lifting plate 13 into a vertical thrust, and the rolling part 14 on the inclined surface will convert the relative sliding between the lifting plate 13 and the seafood into relative rolling. Therefore, the lifting plate 13 overcomes the elastic force of the spring 2 702 under the action of the seafood and moves away from the conveyor belt, and finally moves to the highest height of the seafood. At this time, the rolling part 14 at the bottom of the lifting plate 13 contacts the seafood. When the seafood has completely passed through the lifting plate 13, due to the lack of support from the seafood, under the action of the spring 2 702, the lifting plate 13 moves again towards the conveyor belt, and finally closes the opening of the shell 12, waiting for the arrival of the next seafood, and then repeats the lifting movement.

[0053] When the ship encounters wind and waves, the hull will shake violently, and the trough body 1 fixed in the cabin will also shake with the hull. Under the action of the guide column 9 and the through hole 8, the floating plate 6 will move along the axial direction of the guide column 9 with the refrigerant 4. At this time, the spring 1 701 will be reciprocatingly compressed and reset, and the floating plate 6 and the spring 1 701 will absorb most of the vertical shaking of the refrigerant 4; the horizontally moving refrigerant 4 will be partially hindered by the water baffle 11 after encountering the water baffle 11, and partially move along the arc surface of the water baffle 11. Since the central angle of the arc surface is 90°, the horizontal kinetic energy of the refrigerant 4 will be converted into vertical kinetic energy, thereby driving the floating plate 6 to move, so that the spring 1 701 can absorb part of the energy.

[0054] The wind and wave setting level of the present invention is positively correlated with the selection of spring 1 701. The higher the wind and wave setting level is, the larger the spring elastic coefficient of spring 1 701 that needs to be selected is.

[0055] Embodiment 2: When the vessel encounters wind and waves greater than a set value level.

[0056] When the refrigerant 4 drives the floating plate 6 to move along the axial direction of the guide column 9, the floating plate 6 will contact the limiting portion 10 and stop moving under the action of the limiting portion 10. The limiting portion 10 can prevent the spring 701 from being over-compressed and damaged. When the floating plate 6 contacts the limiting portion 10, it means that the wind and waves encountered by the ship have exceeded the range that the present invention can withstand. At this time, the operation of the refrigeration equipment should be stopped and the internal components of the refrigeration equipment should be protected. Therefore, a proximity switch can be installed at one end of the limiting portion 10 close to the floating plate 6. When the floating plate 6 contacts the limiting portion 10, the proximity switch is triggered and the refrigeration equipment stops running.

[0057] Working principle:

[0058] The seafood moving along the conveyor belt will contact the rolling part 14 on the inclined surface of the lifting plate 13. Under the push of the seafood, the lifting plate 13 squeezes the spring 2 702 and moves away from the conveyor belt device 2. After the seafood passes through the lifting plate 13, the lifting plate 13 is reset under the action of the spring 2 702, and the lifting plate 13 is raised to close the inlet and outlet of the tank body 1 in time to prevent the freezing liquid 4 from splashing out of the tank body 1 when the freezing liquid 4 shakes. When the freezing liquid 4 shakes, the floating plate 6 will shake with the freezing liquid 4, thereby driving the spring 1 701 to be compressed and reset back and forth, and the water baffle 11 can hinder the movement of the freezing liquid 4 in any direction along the horizontal plane. The combination of the two reduces the shaking of the freezing liquid 4, so that the seafood is always below the liquid level of the freezing liquid 4, ensuring the freezing effect of the seafood.

[0059] Although multiple embodiments of the present invention have been listed and described, it will be understood by relevant technical personnel in the art that various changes, modifications, substitutions and variations may be made to the states and components of these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid freezing production equipment for offshore processing ship, comprising: A vacuum packaging unit, wherein the vacuum packaging unit is used to seal and package the seafood; A tank body (1), wherein the tank body (1) is divided into a feeding end and a discharging end, the vacuum packaging unit is located on a side close to the feeding end of the tank body (1), a conveyor belt device (2) is installed in the tank body (1), openings for the conveyor belt device (2) to enter and exit are symmetrically opened on the tank body (1), and a plurality of partitions (3) are evenly installed on the conveyor belt device (2), a freezing liquid (4) is stored in the tank body (1), a double-layer stainless steel baffle (5) for heat preservation is fixedly installed in the middle of the inner wall of the tank body (1), and a perforated plate is installed in the tank body (1) for ensuring that the seafood is always below the liquid level of the freezing liquid (4); A packaging unit, wherein one side of the discharging end of the tank body (1) is provided with a packaging unit, and the packaging unit is used to pack a plurality of frozen seafood into boxes; It is characterized by further comprising: A stabilizing device is installed in the tank body (1), and the stabilizing device is used to reduce the shaking of the freezing liquid (4) when the hull shakes, so that the seafood is always below the liquid level of the freezing liquid (4); The stabilizing device comprises a vertical stabilizing unit, a horizontal stabilizing unit and a sealing unit. The vertical stabilizing unit comprises a floating plate (6) slidably mounted on the inner wall of the tank body (1). The floating plate (6) can float and shake along with the freezing liquid (4). The bottom wall of the floating plate (6) is connected to the horizontal stabilizing unit. The opening of the tank body (1) is provided with a sealing unit for shielding the freezing liquid (4) from splashing. A plurality of springs (701) are evenly installed at the bottom of the double-layer stainless steel baffle (5), the other end of the spring (701) is fixedly connected to the floating plate (6), a plurality of through holes (8) are opened on the floating plate (6), and a plurality of guide columns (9) cooperating with the through holes (8) are vertically installed on one side of the double-layer stainless steel baffle (5) close to the floating plate (6), and the other end of the guide column (9) is located below the liquid level of the freezing liquid (4); A limiting portion (10) is installed on one side of the double-layer stainless steel baffle (5) close to the floating plate (6) to prevent the spring 1 (701) from being over-compressed, and the limiting portion (10) includes any one of a cylinder, a rectangular parallelepiped, a drum-shaped body, and a truncated cone; The closed unit comprises a shell (12) symmetrically mounted at the inlet and outlet of the trough body (1) and the conveyor belt device (2); the shell (12) is provided with an opening for the seafood to pass through; a lifting plate (13) is vertically slidably mounted on the opening via a second spring (702); a side of the lifting plate (13) close to the forward direction of the conveyor belt device (2) is provided with an inverted cone-shaped inclined surface, and the vertical height of the inclined surface is greater than or equal to the height of the seafood.

2. The offshore processing ship-borne rapid freezing production equipment according to claim 1, characterized in that: The horizontal stabilization unit comprises a water baffle (11) arranged in the tank body (1), the water baffle (11) being located between the orifice plate and the floating plate (6), and the water baffle (11) being composed of a plurality of baffles perpendicular to each other.

3. The offshore processing ship-borne rapid freezing production equipment according to claim 2, characterized in that: The water baffle (11) is installed in the tank body (1) by sliding along a vertical direction through a slide groove, the water baffle (11) is fixedly connected to the floating plate (6), a circular arc surface with a central angle of ninety degrees is provided on the side wall of the baffle, and the guide column (9) and the water baffle (11) are staggered with each other.

4. The offshore processing ship-borne rapid freezing production equipment according to claim 1, characterized in that: A rolling part (14) is rotatably installed at the bottom and inclined surface of the lifting plate (13) for reducing the friction between the lifting plate (13) and the seafood. The rolling part (14) includes any one of a cylinder, a sphere, and a drum.

5. The offshore processing ship-borne rapid freezing production equipment according to claim 1, characterized in that: Thermal insulation materials for preventing the cooling amount of the refrigerant (4) from being lost are installed on the side walls of the shell (12) and the lifting plate (13).

6. The offshore processing ship-borne rapid freezing production equipment according to claim 1, characterized in that: The height of the chamber of the tank body (1) is three times the height of the liquid level of the freezing liquid (4).

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