Liquid nitrogen quick freezer for aquatic products

Abstract

The utility model relates to aquatic product processing technical field discloses a kind of liquid nitrogen quick freezer for aquatic products, including support mechanism, support mechanism includes operation table, and sliding mechanism is provided on operation table, and sliding mechanism is slidably provided with conveying mechanism, and top cover mechanism is provided on the upper portion of conveying mechanism, and the drive mechanism of driving conveying mechanism sliding and the lifting mechanism for pushing top cover mechanism to rise are provided at the side of operation table.The utility model can be moved to the side of top cover mechanism after completing freezing operation, and the position of top cover mechanism will not cause obstruction to cleaning, facilitate worker to remove the adherent on conveying belt, improve cleaning efficiency, guarantee equipment hygiene, and also facilitate worker to clean the inside of top cover mechanism.

Description

Technical Field

[0001] This utility model relates to the field of aquatic product processing technology, and in particular to a liquid nitrogen quick-freezing machine for aquatic products. Background Technology

[0002] Fresh aquatic products are highly perishable and easily spoil in the supply chain. Their protein and lipid components are susceptible to enzymatic degradation and microbial proliferation, leading to quality deterioration and potential food safety hazards. In recent years, with the development of air separation technology and people's increasing demands for food quality, liquid nitrogen quick-freezing has flourished in the food industry. Liquid nitrogen quick-freezing machines utilize the huge temperature difference between liquid nitrogen and the product to release extremely high freezing intensity, which can quickly lower the temperature of aquatic products and achieve low-temperature deep freezing. This is beneficial for achieving partial vitrification of frozen foods and greatly improves the quality of frozen foods.

[0003] Existing liquid nitrogen quick-freezing machines can clean the sticky substances on the conveyor belt by lifting the insulation cover above the conveyor belt. However, the lifting height of the insulation cover is limited, resulting in limited cleaning space and making it difficult to completely remove the sticky substances remaining on the conveyor belt. Utility Model Content

[0004] The purpose of this invention is to provide a liquid nitrogen quick-freezing machine for aquatic products, which can remove the entire conveyor belt, effectively remove the sticky substances on the conveyor belt, improve cleaning efficiency, and ensure the hygiene of the equipment.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a liquid nitrogen quick-freezing machine for aquatic products, including a support mechanism, the support mechanism including an operating table, a sliding mechanism provided on the operating table, a conveying mechanism slidably provided on the sliding mechanism, a top cover mechanism provided on the upper part of the conveying mechanism, and a driving mechanism for driving the conveying mechanism to slide and a lifting mechanism for pushing the top cover mechanism to rise are provided on one side of the operating table.

[0006] By adopting the above technical solution, after the aquatic products have completed the freezing operation on the liquid nitrogen quick-freezing machine, the lifting mechanism can lift the top cover mechanism to directly above the conveying mechanism. Then, the driving mechanism can drive the conveying mechanism to slide along the sliding mechanism to one side of the top cover mechanism, which is convenient for workers to perform deep cleaning of the conveyor belt 304 and also convenient for workers to clean the inside of the top cover mechanism.

[0007] A further feature of this invention is that the sliding mechanism includes a slide rail fixedly mounted on the operating table.

[0008] By adopting the above technical solution, the slide rail cooperates with the slide groove of the vertical plate of the conveying mechanism to form a track-type guide structure, which can limit the sliding direction of the conveying mechanism and ensure that the conveying mechanism slides out in a specific direction.

[0009] A further feature of this invention is that the conveying mechanism includes two opposing vertical plates, and the two vertical plates are provided with slide grooves at positions corresponding to the slide rail, allowing the vertical plates to slide along the slide rail. A rotating shaft is rotatably provided between the two ends of the two vertical plates, and a conveyor belt is sleeved on the rotating shaft to form a linkage with the rotating shaft in the circumferential direction.

[0010] By adopting the above technical solution, the two opposing plates form a frame-type support structure, which not only provides a stable installation foundation for the shaft and conveyor belt, but also forms a double-rail guiding mechanism through the cooperation of the sliding grooves and rails on the upright plates. The precise fit of the sliding grooves and rails ensures that the conveying mechanism can only slide smoothly along the direction of the rails.

[0011] A further feature of this invention is that a power assembly for driving the rotating shaft is provided on the outer side of the upright plate.

[0012] By adopting the above technical solution, the power component is directly installed on the outside of the vertical plate and can be directly connected to the rotating shaft through components such as couplings and gears, reducing the loss of intermediate transmission links. The power component provides power for the rotation of the rotating shaft.

[0013] A further feature of this invention is that the top cover mechanism includes a heat insulation cover placed above the conveyor belt, and a plurality of atomizing nozzles are fixedly installed inside the heat insulation cover.

[0014] By adopting the above technical solution, the atomizing nozzle sprays liquid nitrogen, which comes into full contact with the aquatic products on the conveying mechanism, thereby achieving rapid freezing.

[0015] A further feature of this invention is that the lifting mechanism includes a lifting cylinder, and the end of the telescopic rod of the lifting cylinder is fixedly provided with a connecting block that is fixedly connected to the heat insulation cover.

[0016] By adopting the above technical solution, the end of the telescopic rod is fixedly connected to the heat insulation cover through the connecting block. The connecting block, as an intermediate connecting part, can not only expand the contact area of ​​the force, but also achieve a rigid connection between the two through welding, ensuring that the driving force of the cylinder is efficiently transmitted to the heat insulation cover.

[0017] The beneficial effects of this utility model are:

[0018] After the liquid nitrogen quick-freezing machine has completed its freezing operation, the conveying mechanism can be moved to one side of the top cover mechanism. The position of the top cover mechanism will not obstruct cleaning, making it easier for workers to remove the sticky substances on the conveyor belt, improving cleaning efficiency, ensuring equipment hygiene, and also making it easier for workers to clean the inside of the top cover mechanism. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a liquid nitrogen quick-freezing machine for aquatic products according to the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the top cover mechanism of a liquid nitrogen quick-freezing machine for aquatic products according to the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of a liquid nitrogen quick-freezing machine for aquatic products, in which the top cover mechanism rises while the conveying mechanism slides out.

[0023] Figure 4 This is a schematic diagram of the structure of a liquid nitrogen quick-freezing machine for aquatic products, in which the top cover mechanism rises while the conveying mechanism slides out.

[0024] Figure 5 This is a bottom view of the structure of a liquid nitrogen quick-freezing machine for aquatic products according to this utility model.

[0025] In the diagram, 1 is the support mechanism; 101 is the operating table; 2 is the sliding mechanism; 201 is the slide rail; 3 is the conveying mechanism; 301 is the upright plate; 302 is the slide groove; 303 is the rotating shaft; 304 is the conveyor belt; 305 is the power component; 306 is the fixing plate; 307 is the pin; 308 is the insertion hole; 4 is the top cover mechanism; 401 is the heat insulation cover; 402 is the atomizing nozzle; 5 is the drive mechanism; 6 is the lifting mechanism; 601 is the lifting cylinder; and 602 is the connecting block. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] like Figure 1As shown, this utility model embodiment specifically provides a liquid nitrogen quick-freezing machine for aquatic products, including a support mechanism 1. The support mechanism 1 includes an operating table 101, a sliding mechanism 2 is provided on the operating table 101, a conveying mechanism 3 is slidably provided on the sliding mechanism 2, a top cover mechanism 4 is provided on the upper part of the conveying mechanism 3, and a driving mechanism 5 for driving the conveying mechanism 3 to slide and a lifting mechanism 6 for pushing the top cover mechanism 4 to rise are provided on one side of the operating table 101.

[0028] Specifically, such as Figure 2 As shown, after the aquatic products have completed the freezing process on the liquid nitrogen quick-freezing machine, the lifting mechanism 6 can lift the top cover mechanism 4 directly above the conveying mechanism 3, as shown. Figure 3 As shown, the conveyor 3 can then be driven by the drive mechanism 5 to slide along the sliding mechanism 2 to one side of the top cover mechanism 4, which makes it easier for workers to perform deep cleaning of the conveyor belt 304 and also makes it easier for workers to clean the inside of the top cover mechanism 4.

[0029] It is worth noting that the conveying mechanism 3, the top cover mechanism 4, and the lifting mechanism 6 are all existing technologies. Their structures and principles are well known to those skilled in the art and belong to common knowledge that can be implemented and used by those skilled in the art. Therefore, they will not be described in detail here.

[0030] Furthermore, the sliding mechanism 2 includes a slide rail 201 fixedly mounted on the operating table 101.

[0031] Specifically, the slide rail 201 cooperates with the slide groove 302 of the vertical plate 301 of the conveying mechanism 3 to form a track-type guide structure, which can limit the sliding direction of the conveying mechanism 3 and ensure that the conveying mechanism 3 slides out in a specific direction.

[0032] It is worth noting that if the conveyor belt 304 is cleaned without moving the conveyor mechanism 3, the lifting mechanism 6 has a limited height to lift the insulation cover 401. On the one hand, there are fixed gaps and obstructions between the conveyor mechanism 3, the insulation cover 401, and the machine body, making it impossible for workers to reach under the conveyor belt 304, the side, and the connection between the conveyor belt 304 and the main body of the equipment. These areas are prone to retaining aquatic product debris and juices. On the other hand, after the conveyor mechanism 3 is moved out, the bottom, sides, and inside of the insulation cover 401 of the conveyor mechanism 3 can be completely exposed, allowing workers to wipe or rinse all surfaces without dead angles, reducing the risk of bacterial growth from the source and better meeting the hygiene requirements of food processing.

[0033] On the other hand, the narrow cleaning space in the fixed state will severely restrict the worker's operation. Workers do not need to bend over or turn sideways inside the equipment. They can quickly clean the removed conveyor mechanism 3 in an open area, reducing operational obstacles. After the top cover mechanism 4 is exposed separately, it can also be cleaned inside at the same time without waiting for the conveyor mechanism 3 to finish cleaning, thus achieving parallel operation and shortening the overall cleaning time.

[0034] Furthermore, the conveying mechanism 3 includes two opposing upright plates 301. The two upright plates 301 are provided with slide grooves 302 at positions corresponding to the slide rail 201, allowing the upright plates 301 to slide along the slide rail 201. A rotating shaft 303 is rotatably provided between the two ends of the two upright plates 301. A conveyor belt 304 is sleeved on the rotating shaft 303 and forms a linkage with the rotating shaft 303 in the circumferential direction.

[0035] Specifically, the two opposing plates 301 form a frame-like support structure, which not only provides a stable installation foundation for the rotating shaft 303 and the conveyor belt 304, but also forms a double slide rail 201 guiding mechanism through the cooperation of the slide groove 302 on the upright plate 301 and the slide rail 201. The precise engagement of the slide groove 302 and the slide rail 201 restricts the degree of freedom of movement of the conveying mechanism 3, ensuring that it can only slide smoothly along the direction of the slide rail 201.

[0036] Furthermore, a power assembly 305 for driving the rotating shaft 303 to rotate is also provided on the outer side of the upright plate 301.

[0037] Specifically, the power assembly 305 is directly installed on the outside of the vertical plate 301 and can be directly connected to the rotating shaft 303 through components such as couplings and gears, reducing the loss of intermediate transmission links. The power assembly 305 provides power for the rotation of the rotating shaft 303.

[0038] It is worth noting that, apart from the chute 302 provided under the two upright plates 301, the conveying mechanism 3 is still the existing common conveyor belt 304 structure. The core functional parameters and structural details can be customized by professional manufacturers, as long as it has the chute 302 and can convey materials.

[0039] It is worth noting that, such as Figure 4 As shown, a fixing plate 306 is welded onto the upright plate 301, and the fixing plate 306 is inserted into the pre-reserved socket 308 on the operating table 101 via a pin 307.

[0040] When the conveying mechanism 3 is located directly below the top cover mechanism 4, it is in its initial position. At this time, the pin 307 is inserted into the socket 308 to serve as a positioning tool.

[0041] The initial position, i.e. the working position, is to fix the lateral and longitudinal positions of the conveying mechanism 3, so as to avoid the conveying mechanism from shifting due to equipment vibration when conveying aquatic products, and to ensure that the material is always in the center of the liquid nitrogen action area, thus ensuring the uniformity and efficiency of quick freezing.

[0042] When cleaning is required, pull out the pin 307. At the same time, the lifting mechanism 6 pushes the top cover mechanism 4 to rise. When the conveying mechanism 3 slides to the side of the top cover mechanism 4 under the thrust of the driving mechanism 5, the conveying mechanism 3 is in the cleaning position. At this time, the pin 307 is then inserted into the pre-set socket 308 in the cleaning position, which also serves as a positioning function.

[0043] Positioning the cleaning station is to prevent the conveyor mechanism 3 from accidentally sliding during the cleaning process, avoiding worker injuries from being pinched or equipment parts from being damaged by collisions, thus improving operational safety; moreover, the fixed position allows workers to concentrate on completing all-round cleaning without having to repeatedly adjust their position or fix the mechanism, thereby improving cleaning efficiency and effectiveness.

[0044] Furthermore, after cleaning, the conveyor mechanism 3 can be quickly pushed back to its initial position and locked by the pin 307, eliminating the need for recalibration, reducing equipment downtime, and improving overall production efficiency.

[0045] Furthermore, such as Figure 5 As shown, the top cover mechanism 4 includes a heat insulation cover 401 covering the conveyor belt 304, and a number of atomizing nozzles 402 are fixedly installed inside the heat insulation cover 401.

[0046] Specifically, by utilizing the ultra-low temperature properties of liquid nitrogen, the temperature of aquatic products can be reduced to below -120°C in a very short time. Liquid nitrogen is sprayed through the atomizing nozzle 402 inside the top cover mechanism 4, making full contact with the aquatic products on the conveying mechanism 3 to achieve rapid freezing, effectively reducing freezing time, improving production efficiency, and making it suitable for large-scale continuous aquatic product processing.

[0047] Furthermore, the lifting mechanism 6 includes a lifting cylinder 601, and the end of the telescopic rod of the lifting cylinder 601 is fixedly provided with a connecting block 602 that is welded to the heat insulation cover 401.

[0048] Specifically, the end of the telescopic rod is fixedly connected to the heat insulation cover 401 via a connecting block 602. The connecting block 602 serves as an intermediate connecting component, which can both expand the contact area of ​​the force-bearing component and achieve a rigid connection between the two through welding, ensuring that the driving force of the cylinder is efficiently transmitted to the heat insulation cover 401.

[0049] The specific working process of this utility model is as follows:

[0050] S1: Feeding stage: The aquatic products to be quick-frozen are placed on the conveyor belt 304 of the conveyor mechanism 3. The power component 305 drives the rotating shaft 303 to rotate, thereby driving the conveyor belt 304 to circulate and allowing the aquatic products to enter the quick-freezing area.

[0051] S2: Quick-freezing stage: When the conveyor 3 carries the aquatic products to the area below the top cover mechanism 4, several atomizing nozzles 402 inside the insulation cover 401 of the top cover mechanism 4 spray liquid nitrogen. The liquid nitrogen rapidly vaporizes and absorbs heat, quickly freezing the aquatic products that pass through, thus achieving tunnel-type continuous quick-freezing.

[0052] S3: Discharge stage: The quick-frozen aquatic products are sent out from the other side of the top cover mechanism 4 by the conveyor belt 304, completing the entire liquid nitrogen quick-freezing process and realizing efficient and rapid freezing of aquatic products.

[0053] S4: Cleaning Phase

[0054] After the material is discharged, perform the following operations:

[0055] (1) Close the atomizing nozzle 402;

[0056] (2) The lifting cylinder 601 of the lifting mechanism 6 is working, and the connecting block 602 at the end of its telescopic rod drives the top cover mechanism 4 to rise above the conveying mechanism 3.

[0057] (3) The driving mechanism 5 drives the conveying mechanism 3 to slide along the slide rail 201, pushing the position of the conveying mechanism 3 from directly below the top cover mechanism 4 to one side of the top cover mechanism 4, such as... Figure 4 The pin 307 is inserted into the socket 308, and then the worker cleans the conveyor belt 304.

[0058] After cleaning, reset the conveyor mechanism 3 and the top cover mechanism 4.

[0059] The above describes the basic principles, main features, and advantages of this utility model. The standard parts used in this utility model can all be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, which will not be described in detail here.

[0060] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0061] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid nitrogen quick-freezing machine for aquatic products, comprising a support mechanism (1), wherein the support mechanism (1) includes an operating table (101), characterized in that: The operating table (101) is provided with a sliding mechanism (2), a conveying mechanism (3) is slidably provided on the sliding mechanism (2), a top cover mechanism (4) is provided on the upper part of the conveying mechanism (3), and a driving mechanism (5) for driving the conveying mechanism (3) to slide and a lifting mechanism (6) for pushing the top cover mechanism (4) to rise are provided on one side of the operating table (101).

2. The liquid nitrogen quick-freezing machine for aquatic products according to claim 1, characterized in that: The sliding mechanism (2) includes a slide rail (201) fixedly mounted on the operating table (101).

3. The liquid nitrogen quick-freezing machine for aquatic products according to claim 2, characterized in that: The conveying mechanism (3) includes two opposing upright plates (301). The two upright plates (301) are provided with slide grooves (302) at positions corresponding to the slide rail (201) so that the upright plates (301) can slide along the slide rail (201). A rotating shaft (303) is rotatably provided between the two ends of the two upright plates (301). A conveyor belt (304) is sleeved on the rotating shaft (303) and forms a linkage with the rotating shaft (303) in the circumferential direction.

4. A liquid nitrogen quick-freezing machine for aquatic products according to claim 3, characterized in that: The outside of the upright plate (301) is also provided with a power assembly (305) for driving the rotating shaft (303) to rotate.

5. A liquid nitrogen quick-freezing machine for aquatic products according to claim 4, characterized in that: The top cover mechanism (4) includes a heat insulation cover (401) covering the conveyor belt (304), and a plurality of atomizing nozzles (402) are fixedly installed inside the heat insulation cover (401).

6. A liquid nitrogen quick-freezing machine for aquatic products according to claim 5, characterized in that: The lifting mechanism (6) includes a lifting cylinder (601), and the end of the telescopic rod of the lifting cylinder (601) is fixedly provided with a connecting block (602) that is fixedly connected to the heat insulation cover (401).

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