CN220384162U - Quick-freezing tunnel for processing frozen fish and shrimp - Google Patents

Abstract

The utility model provides a quick-freezing tunnel for processing frozen fish and shrimp, which belongs to the technical field of freezing equipment and comprises a freezing tunnel and a plurality of liquid nitrogen branch pipes, wherein the freezing tunnel comprises a feeding section, a freezing section and a discharging section, a freezing chamber is arranged in the freezing section, a conveyor for conveying the fish and shrimp to be frozen into the freezing chamber is arranged in the freezing tunnel, a plurality of spray heads are rotationally connected to the top of the freezing chamber, the output end of a liquid nitrogen spraying mechanism is communicated with a liquid nitrogen pipeline, the output end of the liquid nitrogen pipeline is communicated with at least one spray head, and the spray heads are used for spraying liquid nitrogen towards the fish and shrimp conveyed on the conveyor; a plurality of liquid nitrogen branch pipes are used for conveying liquid nitrogen into the feeding section and the discharging section. The quick-freezing tunnel for processing frozen fishes and shrimps solves the technical problem that cold air cannot be blown onto the fishes and shrimps when the aquatic refrigerator or the freezing tunnel is used, and the quick-freezing tunnel has the advantages that the adjustable spray header is used, so that liquid nitrogen can be blown onto the fishes and shrimps, the quick freezing of the fishes and shrimps is realized, the freezing efficiency is improved, and the energy consumption and the time are reduced.

Description

Quick-freezing tunnel for processing frozen fish and shrimp

Technical Field

The utility model belongs to the technical field of accessories of refrigeration equipment, and particularly relates to a quick-freezing tunnel for processing frozen fish and shrimp.

Background

The method is characterized in that a refrigerator or a freezing tunnel for freezing the fishes and the shrimps is needed in the processing of the fishes and the shrimps, the fishes and the shrimps can be quickly frozen, and the refrigerator is mechanical equipment for achieving low-temperature refrigeration by changing the pressure change of refrigerant gas by a compressor. At present, cold air blown out by an existing refrigerator or tunnel type refrigerator can only face one direction, meanwhile, the cold air cannot be blown onto fishes and shrimps to be frozen, even freezing of the inner space of a freezing chamber of the refrigerator cannot be achieved, a part of cold air can directly return to an evaporator, and therefore freezing efficiency is low, freezing energy consumption is high, and freezing time is long.

Disclosure of Invention

The utility model aims to provide a quick-freezing tunnel for processing frozen fishes and shrimps, and aims to solve the technical problem that the freezing efficiency is low when the cold air of a freezer cannot blow the fishes and shrimps in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a frozen tunnel is used in frozen fish and shrimp processing, includes freezing tunnel and a plurality of liquid nitrogen branch pipe, freezing tunnel is from one end to the other end including feed zone, freezing zone and the ejection of compact section of intercommunication in proper order, the feed zone has the feed inlet, the ejection of compact section has the discharge gate, the inside freezer that is of freezing zone, be provided with in the freezing tunnel be used for to the transport in the freezer to wait to freeze the fish and shrimp conveyer, conveyer one end is arranged in the feed zone, the other end is arranged in the ejection of compact zone, the rotation of freezing chamber top is connected with a plurality of shower heads, the outer top of freezing zone is equipped with spouts liquid nitrogen mechanism, liquid nitrogen pipeline intercommunication liquid nitrogen output, liquid nitrogen pipeline output intercommunication at least one the shower head, the shower head is used for towards fish and shrimp liquid nitrogen that carries on the conveyer sprays; one end of each liquid nitrogen branch pipe extends into the feeding section and the discharging section respectively, the other end of each liquid nitrogen branch pipe is communicated with the output end of the liquid nitrogen spraying mechanism, and the liquid nitrogen branch pipes are used for conveying liquid nitrogen to the feeding section and the discharging section.

Preferably, the quick-freezing tunnel for processing frozen fish and shrimp further comprises a control panel suitable for controlling the start and stop of the liquid spraying nitrogen mechanism, a temperature sensor is arranged in the freezing chamber, and the temperature sensor is electrically connected with the control panel and is suitable for sending temperature information.

Preferably, the shower head is vertical setting, from last to down including in the articulated part at frozen section top, with articulated part rotate the flexible post of being connected and with the shower nozzle that flexible post lower extreme is connected, wear to be equipped with the spray tube in the flexible post, spray tube one end is used for the intercommunication liquid nitrogen pipeline output, the other end intercommunication the shower nozzle, the liquid nitrogen pipeline to carry liquid nitrogen in the spray tube, follow the shower nozzle output liquid nitrogen.

Preferably, a plurality of electric rotating tables are uniformly distributed at the top of the refrigerating chamber, and the rotating ends of the electric rotating tables are connected with the telescopic columns and drive the telescopic columns to swing in a vertical plane.

Preferably, the lower part of the telescopic column is provided with a sliding block, the top of the freezing section is provided with an arc-shaped sliding rail, the sliding block slides in the arc-shaped sliding rail, and two ends of the arc-shaped sliding rail are provided with limiting blocks.

Preferably, a wind shield is arranged above the conveyor in the freezing chamber, a plurality of air holes are uniformly distributed in the wind shield, and liquid nitrogen sprayed out of the spray header passes through the wind shield and then faces the fishes and shrimps.

Preferably, a first adjusting component is arranged on the side part of the freezing chamber, and the first adjusting component is provided with a first adjusting end with the freedom degree of telescopic adjustment along the width direction of the freezing chamber; the adjusting end is connected with a second adjusting component, the second adjusting component is provided with a second adjusting end which is in flexible adjustment along the length direction of the freezing chamber and is detachably connected with the wind shield, and the first adjusting component and the second adjusting component are respectively suitable for adjusting the position of the wind shield.

Preferably, a plurality of first fans are uniformly distributed at the bottom of the freezing chamber, and the first fans are suitable for blowing upwards along the vertical direction.

Preferably, a plurality of second fans are uniformly distributed on the inner side of the refrigerating chamber, and the second fans are suitable for blowing air along the horizontal direction.

Preferably, the feeding port is arranged at one end of the feeding section away from the freezing section, the discharging port is arranged at one end of the discharging section away from the freezing section, and the feeding section and the discharging section are respectively hinged with a heat insulation plate suitable for sealing the feeding port and the discharging port.

The beneficial effects of adopting above-mentioned technical scheme to produce lie in: compared with the prior art, the quick-freezing tunnel for processing frozen fish and shrimp comprises a freezing tunnel and a plurality of liquid nitrogen branch pipes, wherein the freezing tunnel sequentially comprises a feeding section, a freezing section and a discharging section which are communicated with each other from one end to the other end, the feeding section is provided with a feeding hole, the discharging section is provided with a discharging hole, a freezing chamber is arranged in the freezing section, a conveyor which is suitable for conveying fish and shrimp to be frozen into the freezing chamber is arranged in the freezing tunnel, one end of the conveyor is arranged in the feeding section, the other end of the conveyor is arranged in the discharging section, the top of the freezing chamber is rotationally connected with a plurality of spray heads, the outer top of the freezing section is provided with a liquid nitrogen spraying mechanism, the output end of the liquid nitrogen spraying mechanism is communicated with a liquid nitrogen pipeline, the output end of the liquid nitrogen pipeline is communicated with at least one spray head, and the spray heads are suitable for spraying liquid nitrogen towards the fish and shrimp conveyed on the conveyor; one end of each liquid nitrogen branch pipe extends into the feeding section and the discharging section respectively, the other end of each liquid nitrogen branch pipe is communicated with the output end of the liquid nitrogen spraying mechanism, the liquid nitrogen branch pipes are suitable for conveying liquid nitrogen into the feeding section and the discharging section, the technical problem that cold air cannot be blown onto fishes and shrimps when an aquatic refrigerator or a freezing tunnel is used is solved, the liquid nitrogen spraying device is provided with an adjustable spray header, the liquid nitrogen can be blown onto the fishes and shrimps, quick freezing (quick freezing) of the fishes and shrimps is achieved, freezing efficiency is improved, and energy consumption and time are reduced.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

Fig. 1 is a schematic structural diagram of a quick-freezing tunnel for processing frozen fish and shrimp according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a front view structure of a quick-freezing tunnel for processing frozen fish and shrimp according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a front view of a spray header of a quick-freezing tunnel for processing frozen fish and shrimp according to an embodiment of the present utility model;

fig. 4 is a schematic top view of a wind shield of a quick-freezing tunnel for processing frozen fish and shrimp according to an embodiment of the present utility model;

in the figure: 1. freezing the tunnel; 11. a feed section; 12. a freezing section; 13. a discharging section; 14. a feed inlet; 15. a discharge port; 16. a freezing chamber; 17. a mounting hole; 18. a temperature sensor;

2. a liquid nitrogen branch pipe; 3. a conveyor; 31. lifting columns; 4. a spray header; 41. a hinge part; 42. a telescopic column; 43. a spray head; 44. a spray pipe; 45. an electric rotating table; 46. a slide block; 47. an arc-shaped slide rail; 48. a limiting block; 5. a liquid nitrogen spraying mechanism; 6. a liquid nitrogen pipeline; 7. a control panel; 8. a wind deflector; 81. air holes; 9. a first adjustment assembly; 10. a second adjustment assembly; 101. a clamping plate; 110. a first fan; 120. a second fan; 130. a thermal insulation board; 140. an access door.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, a quick-freezing tunnel for processing frozen fish and shrimp according to the present utility model will now be described. The quick-freezing tunnel for processing frozen fish and shrimp comprises a freezing tunnel 1 and a plurality of liquid nitrogen branch pipes 2, wherein the freezing tunnel 1 sequentially comprises a feeding section 11, a freezing section 12 and a discharging section 13 which are mutually communicated from one end to the other end, the feeding section 11 is provided with a feeding port 14, the discharging section 13 is provided with a discharging port 15, a freezing chamber 16 is arranged in the freezing section 12, a conveyor 3 which is suitable for conveying the fish and shrimp to be frozen into the freezing chamber 16 is arranged in the freezing tunnel 1, one end of the conveyor 3 is arranged in the feeding section 11, the other end of the conveyor is arranged in the discharging section 13, a plurality of spray heads 4 are rotatably connected to the inner top of the freezing chamber 16, a liquid nitrogen spraying mechanism 5 is arranged at the outer top of the freezing section 12, the output end of the liquid nitrogen spraying mechanism 5 is communicated with a liquid nitrogen pipeline 6, the output end of the liquid nitrogen pipeline 6 is communicated with at least one spray head 4, and the spray heads 4 are suitable for spraying liquid nitrogen toward the fish and shrimp conveyed on the conveyor 3; one end of each liquid nitrogen branch pipe 2 extends into the feeding section 11 and the discharging section 13 respectively, the other end of each liquid nitrogen branch pipe 2 is communicated with the output end of the liquid nitrogen spraying mechanism 5, and the liquid nitrogen branch pipes 2 are suitable for conveying liquid nitrogen into the feeding section 11 and the discharging section 13.

Compared with the prior art, the rotatable spray header 4 is arranged at the top in the freezing tunnel 1, so that the sprayed liquid nitrogen can face the fishes and the shrimps and can be frozen rapidly, the technical problem that the cold air cannot be blown onto the fishes and the shrimps when the aquatic refrigerator or the freezing tunnel 1 is used is solved, and the adjustable spray header 4 can be used for blowing the liquid nitrogen onto the fishes and the shrimps, so that the fishes and the shrimps can be frozen rapidly, the freezing efficiency is improved, and the energy consumption and the time are reduced.

Under normal conditions, the temperature of liquid nitrogen is lower, sprays liquid nitrogen on the fishes and shrimps, can realize the rapid cooling down and freezing to fishes and shrimps, and shower head 4 can rotate in freezer 16, conveniently adjusts its orientation of fishes and shrimps, and then realizes can spraying liquid nitrogen towards fishes and shrimps, does benefit to the rapid freezing of aquatic products. The bottom of the conveyor 3 is height-adjustable by means of a plurality of lifting columns 31, which lifting columns 31 are prior art products, enabling the height of the conveyor 3 to be adjusted. A mounting hole 17 communicating with the inside of the freezing tunnel 1 is provided at the top of the freezing tunnel 1, and a liquid nitrogen pipe 6 passes through the mounting hole 17 and communicates with the shower head 4.

The liquid nitrogen spraying mechanism 5 adopts the prior art products, such as a liquid nitrogen machine, and the operation of the liquid nitrogen spraying mechanism 5 can be controlled, and liquid nitrogen is sprayed out through a liquid nitrogen pipeline 6, so that the freezing of aquatic products (fish and shrimp) is realized. Liquid nitrogen can be sprayed into the feeding section 11, the discharging section 13 and the freezing chamber 16 simultaneously through the liquid nitrogen branch pipe 2, so that the liquid nitrogen can be uniformly conveyed to the fishes and shrimps on the conveyor 3, and the fishes and shrimps can be quickly frozen.

In order to control the delivery amount of the liquid nitrogen, in some embodiments, referring to fig. 1 to 4, the quick-freezing tunnel for processing frozen fish and shrimp further includes a control panel 7 adapted to control the start and stop of the liquid spraying nitrogen mechanism 5, and a temperature sensor 18 is disposed in the freezing chamber 16, and the temperature sensor 18 is electrically connected to the control panel 7 and is adapted to send temperature information. The control panel 7 adopts the prior art product, is internally provided with a PLC controller, comprises a display, and can display the temperature detected by the temperature sensor 18, so that staff can intuitively see the internal temperature, and is beneficial to reasonably controlling the liquid spraying nitrogen mechanism 5.

In some embodiments, referring to fig. 1 to 4, the spray header 4 is vertically disposed, and sequentially includes, from top to bottom, a hinge portion 41 connected to the top of the freezing section 12, a telescopic column 42 rotatably connected to the hinge portion 41, and a spray nozzle 43 connected to the lower end of the telescopic column 42, a spray pipe 44 is penetrated in the telescopic column 42, one end of the spray pipe 44 is used for communicating with the output end of the liquid nitrogen pipeline 6, the other end of the spray pipe is communicated with the spray nozzle 43, the liquid nitrogen pipeline 6 conveys liquid nitrogen into the spray pipe 44, and the liquid nitrogen is output from the spray nozzle 43. One end of the liquid nitrogen pipeline 6 is communicated with the liquid nitrogen spraying mechanism 5, the other end of the liquid nitrogen pipeline is communicated with the spray pipe 44, the spray head 43 is of a structure similar to a shower in the prior art, spray liquid can be sprayed out in a spray mode, the telescopic column 42 is hollow, one side of the telescopic column is provided with a mounting hole, the mounting hole is communicated with the hollow interior, the spray pipe 44 penetrates into the hollow interior and is led out from the mounting hole and is communicated with the liquid nitrogen pipeline 6, and the telescopic column 42 drives the spray pipe 44 to swing together, so that fish and shrimp in the freezing chamber 16 can be uniformly frozen. The telescopic column 42 is vertically telescopic and its length is adjustable.

When the length of the spray pipe 44 is longer, the length of the telescopic column 42 can be prolonged, so that the liquid nitrogen in the spray pipe 44 is kept in an unblocked state, and the normal output of the liquid nitrogen is not affected.

In some embodiments of the present utility model, referring to fig. 1 to 4, a plurality of electric rotating tables 45 are uniformly distributed on the top of the freezing chamber 16, and the rotating ends of the electric rotating tables 45 are connected to the telescopic columns 42 and drive the telescopic columns 42 to swing in a vertical plane. The electric rotating table 45 adopts the prior art, is electrically connected with the control panel 7, correspondingly, is provided with a module for controlling the electric rotating table 45 on the control panel 7, can realize the reciprocating swing of the driving telescopic column 42, and is beneficial to conveying liquid nitrogen in a swing type towards the freezing chamber 16.

Further optimizing the above technical solution, referring to fig. 1 to 4, a sliding block 46 is disposed at the lower portion of the telescopic column 42, an arc-shaped sliding rail 47 is disposed at the top of the freezing section 12, the sliding block 46 slides in the arc-shaped sliding rail 47, and limiting blocks 48 are disposed at two ends of the arc-shaped sliding rail 47. By using the matching sliding direction of the sliding block 46 and the sliding rail, the swing track or direction of the telescopic column 42 can be positioned, so that the spraying path of the liquid nitrogen can be positioned, and the installation and operation of the telescopic column 42 can be ensured. When the slide rail is used, it is inconvenient to adjust the length of the telescopic column 42 at this time, and it may not be adjusted at this time. The limiting block 48 can limit the sliding range of the sliding block 46 and prevent the sliding from sliding off the arc-shaped sliding rail 47.

In some embodiments, referring to fig. 1 to 4, a wind deflector 8 is disposed above the conveyor 3 in the freezing chamber 16, and a plurality of air holes 81 are uniformly distributed in the wind deflector 8, and the liquid nitrogen sprayed from the spray header 4 passes through the wind deflector 8 and then faces towards the fishes and shrimps. Some liquid nitrogen passes through the air holes 81, and the output liquid nitrogen can be uniformly emitted into the freezing chamber 16 by using the wind shield 8, so that uniform freezing of the freezing chamber 16 is facilitated, directional spraying of the liquid nitrogen is avoided, and the phenomenon of uniform cooling or freezing of the freezing chamber 16 is not facilitated. The wind deflector 8 is similar to the wind deflector 8 installed at the air outlet of the air conditioner used in the prior art, and plays a role in scattering the blown wind to prevent the cold wind from being directly blown, while the wind deflector 8 used in the embodiment also prevents the liquid nitrogen from being directly blown to the conveyor 3 or other directions, which is not beneficial to the uniform cooling of the internal environment of the freezing chamber 16 or the uniform freezing of fish and shrimp.

The wind shield 8 is detachably connected with the freezing chamber 16 during specific manufacturing, so that the wind shield can be installed during use, and can be detached during non-use, and the wind shield can be reasonably used according to specific situations.

In order to be able to adjust the position of the wind deflector 8 (in particular, the position on the horizontal plane), in some embodiments, referring to fig. 1 to 4, the inner side of the freezing chamber 16 is provided with a first adjusting assembly 9, and the first adjusting assembly 9 has a first adjusting end with a degree of freedom of telescopic adjustment along the width direction of the freezing chamber 16; the adjusting end is connected with a second adjusting component 10, the second adjusting component 10 is provided with a second adjusting end with a degree of freedom of telescopic adjustment along the length direction of the freezing chamber 16, the second adjusting end is detachably connected with the wind shield 8, and the first adjusting component 9 and the second adjusting component 10 are respectively suitable for adjusting the position of the wind shield 8. The position in the X-axis direction is adjusted by the first adjusting unit 9, the position in the Y-axis direction is adjusted by the second adjusting unit 10, and the position in the vertical direction, i.e., the Z-axis direction, may not be adjusted (the meaning of adjustment is not great). During adjustment, the position of the wind shield 8 is reasonably adjusted according to the output position of liquid nitrogen, so that the output liquid nitrogen can be scattered, and uniform cooling of the freezing chamber 16 or uniform freezing of fishes and shrimps can be realized.

Specifically, the first adjusting component 9 and the second adjusting component 10 are electric push rods or electric telescopic rods used in the prior art, and the position of the wind shield 8 can be adjusted by controlling the telescopic rods. Preferably, the first adjusting component 9 and the second adjusting component 10 are electrically connected with the control panel 7, and the position of the wind deflector 8 can be controlled and adjusted by controlling on the control panel 7. The second adjustment end of the second adjustment assembly 10 is provided with a clamping plate 101, the clamping plate 101 being used for clamping the wind deflector 8.

As a preferred structure, referring to fig. 1 to 4, a plurality of first fans 110 are uniformly distributed at the bottom of the freezing chamber 16, and the first fans 110 are adapted to blow air upward in a vertical direction. The plurality of first fans 110 are arranged in a matrix form, after liquid nitrogen is blown to fishes and shrimps, in order to enable the liquid nitrogen to uniformly fill the freezing chamber 16, the liquid nitrogen is blown upwards through the first fans 110 and rapidly moves in the vertical direction, the whole freezing chamber 16 is gradually filled, uniform freezing of the fishes and shrimps can be rapidly achieved, and the freezing chamber 16 is rapidly changed into a frozen state.

In some embodiments, referring to fig. 1 to 4, a plurality of second fans 120 are uniformly distributed on the inner side of the freezing chamber 16, and the second fans 120 are adapted to blow air in a horizontal direction. By using the second fan 120 to blow air in the horizontal direction and also blow air in the horizontal direction toward the conveyor 3 or the fish and shrimp, the liquid nitrogen can be rapidly moved in the horizontal direction to fill the freezing chamber 16, thereby rapidly realizing uniform freezing of the fish and shrimp and rapidly changing the freezing chamber 16 into a frozen state. The second fan 120 may be installed at one side of the freezing chamber 16, or may be installed at both sides, and may be in a "opposite blowing" state when installed at both sides, so that the above technical effects can be achieved.

Preferably, the first fan 110 and the second fan 120 are electrically connected to the control panel 7, and the start and stop of the two fans can be controlled by controlling the control panel 7.

In some embodiments, referring to fig. 1 to 4, the inlet 14 is disposed at an end of the inlet section 11 away from the freezing section 12, the outlet 15 is disposed at an end of the outlet section 13 away from the freezing section 12, and the inlet section 11 and the outlet section 13 are respectively hinged with an insulation board 130 adapted to cover the inlet 14 and the outlet 15. When the fish and shrimp do not need to be conveyed into the freezing chamber 16, the heat insulation plate 130 is used for sealing the feed inlet 14 and the discharge outlet 15, so that the inside of the freezing chamber 16 is in a closed state, and the outward outflow of the liquid nitrogen can be prevented, so that the freezing effect of the fish and shrimp is better. The heat-insulating plate is a plate body which can play a role in heat insulation in the prior art.

Preferably, the upper end of the heat insulation plate 130 is hinged with the upper end of the feed inlet 14 or the discharge outlet 15, and the heat insulation plate is turned upwards, so that the feed inlet 14 or the discharge outlet 15 can be opened, and vice versa.

In addition, the side of the freezing section 12 is provided with an access door 140 communicated with the inside of the freezing tunnel 1, and workers can enter the inside of the freezing tunnel 1 through the access door 140 so as to carry out maintenance operation and convenient operation.

In the foregoing description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed above.

Claims (10)

1. A quick-frozen tunnel is used in processing of frozen fish shrimp, its characterized in that: the fish and shrimp freezing device comprises a freezing tunnel and a plurality of liquid nitrogen branch pipes, wherein the freezing tunnel sequentially comprises a feeding section, a freezing section and a discharging section which are mutually communicated from one end to the other end, the feeding section is provided with a feeding hole, the discharging section is provided with a discharging hole, the freezing section is internally provided with a freezing chamber, a conveyor used for conveying fish and shrimp to be frozen in the freezing chamber is arranged in the freezing tunnel, one end of the conveyor is arranged in the feeding section, the other end of the conveyor is arranged in the discharging section, the top of the freezing chamber is rotationally connected with a plurality of spray heads, the outer top of the freezing section is provided with a liquid nitrogen spraying mechanism, the output end of the liquid nitrogen spraying mechanism is communicated with a liquid nitrogen pipeline, the output end of the liquid nitrogen pipeline is communicated with at least one spray head, and the spray heads are used for spraying liquid nitrogen towards the fish and shrimp conveyed on the conveyor;

one end of each liquid nitrogen branch pipe extends into the feeding section and the discharging section respectively, the other end of each liquid nitrogen branch pipe is communicated with the output end of the liquid nitrogen spraying mechanism, and the liquid nitrogen branch pipes are used for conveying liquid nitrogen to the feeding section and the discharging section.

2. The quick-freezing tunnel for processing frozen fish and shrimp according to claim 1, wherein: the refrigerator further comprises a control panel for controlling the start and stop of the liquid spraying nitrogen mechanism, a temperature sensor is arranged in the refrigerator, and the temperature sensor is electrically connected with the control panel and used for sending temperature information.

3. The quick-freezing tunnel for processing frozen fish and shrimp according to claim 1, wherein: the shower head is vertical form setting, from last to down including in the articulated part at freezing section top, with articulated part rotate the flexible post of being connected and with the shower nozzle that flexible post lower extreme is connected, wear to be equipped with the spray tube in the flexible post, spray tube one end is used for the intercommunication liquid nitrogen pipeline output, the other end intercommunication the shower nozzle, the liquid nitrogen pipeline to carry liquid nitrogen in the spray tube, follow the shower nozzle output liquid nitrogen.

4. A quick-freeze tunnel for processing frozen fish and shrimp according to claim 3, wherein: the top equipartition has a plurality of electric rotating tables in the freezing chamber, electric rotating table's rotating end is connected flexible post, and drive flexible post swings in vertical plane.

5. The quick-freezing tunnel for processing frozen fish and shrimp according to claim 4, wherein: the refrigerator is characterized in that a sliding block is arranged at the lower part of the telescopic column, an arc-shaped sliding rail is arranged at the top of the freezing section, the sliding block slides in the arc-shaped sliding rail, and limiting blocks are arranged at two ends of the arc-shaped sliding rail.

6. The quick-freezing tunnel for processing frozen fish and shrimp according to claim 1, wherein: the refrigerating chamber is internally provided with a wind shield above the conveyor, a plurality of air holes are uniformly distributed in the wind shield, and liquid nitrogen sprayed out of the spray header passes through the wind shield and then faces to fishes and shrimps.

7. The quick-freezing tunnel for processing frozen fish and shrimp according to claim 6, wherein: the side part of the freezing chamber is provided with a first adjusting component which is provided with a first adjusting end with the freedom degree of telescopic adjustment along the width direction of the freezing chamber; the adjusting end is connected with a second adjusting component, the second adjusting component is provided with a second adjusting end which is in flexible degree of freedom of adjusting along the length direction of the freezing chamber, the second adjusting end is detachably connected with the wind shield, and the first adjusting component and the second adjusting component are respectively used for adjusting the position of the wind shield.

8. The quick-freezing tunnel for processing frozen fish and shrimp according to claim 1, wherein: the bottom in the freezing chamber equipartition has a plurality of first fans, first fan is used for upwards blowing along vertical direction.

9. The quick-freezing tunnel for processing frozen fish and shrimp according to claim 1, wherein: a plurality of second fans are uniformly distributed on the inner side of the refrigerating chamber and are used for blowing air along the horizontal direction.

10. A quick-freezing tunnel for processing frozen fish and shrimp according to any one of claims 1-9, characterized in that: the feeding port is arranged at one end of the feeding section far away from the freezing section, the discharging port is arranged at one end of the discharging section far away from the freezing section, and the feeding section and the discharging section are respectively hinged with a heat insulation plate for sealing the feeding port and the discharging port.