Salting-out, freezing and freshness-locking treatment device for yellow croakers

Abstract

The utility model discloses a yellow croaker salting-out freezing and freshness-locking treatment device in the technical field of yellow croaker freezing and freshness-locking treatment, which comprises a support, a first conveying assembly and a vacuum box are arranged on the support, a liquid nitrogen box is arranged at one end of the support, and a freezing cabinet is arranged on one side of the liquid nitrogen box. A second conveying assembly is arranged between the liquid nitrogen box and the cabinet freezer, and the heat sealing assembly is arranged in the vacuum box and used for conducting heat sealing on a plastic package bag containing yellow croaker after vacuum pumping; and the multiple sets of clamping assemblies are fixedly installed on the conveying belt of the first conveying assembly at equal intervals and used for clamping the plastic package bags and keeping the plastic package bags upright, the two sides of the tops of the plastic package bags are tightly attached, the packaging and vacuumizing efficiency of the equipment is effectively improved, and manual operation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of yellow croaker freezing and freshness-locking treatment technology, specifically a yellow croaker salt precipitation freezing and freshness-locking treatment device. Background Technology

[0002] Salting-out freezing is an effective seafood preservation technology. Its traditional process includes the following steps: taking the fish, cleaning and killing it, cutting it, marinating it, and freezing it to lock in freshness.

[0003] To ensure the flavor of yellow croaker, the following points are very important:

[0004] 1. The ratio of the marinade ingredients should not be too far off;

[0005] 2. The marinating time to lock in freshness is 16-18 hours; do not consume after the freshness-locking time has elapsed.

[0006] 3. The temperature during marinating and storage should be maintained at -0.1℃. The marinade should not completely freeze or turn into water, but should be an "ice-water mixture." Freezing and preserving freshness typically involves placing the processed yellow croaker in a sealed plastic bag, then vacuuming the bag to remove air and reduce spoilage. The bag is then placed in liquid nitrogen for freezing. For example, patent number CN202323311894.X discloses a technical solution for vacuum packaging of yellow croaker. However, this solution still has some problems in practice. When vacuum packaging, the yellow croaker is placed in a packaging bag, which is then placed on a conveyor assembly, and finally packaged by a vacuum box. While this method can vacuum package the yellow croaker, in actual operation, the yellow croaker and packaging bag lie flat on the conveyor assembly. Even when the conveyor assembly moves to the bottom of the vacuum box, the bag remains flat. Since the bag is flat without any support, vacuuming and heat sealing are extremely inconvenient, thus affecting the equipment's packaging efficiency. Utility Model Content

[0007] The purpose of this invention is to provide a salt-curing freezing and freshness-locking device for yellow croaker, in order to solve the problems of low efficiency in equipment packaging and extreme inconvenience in vacuum extraction mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A yellow croaker salt precipitation freezing and freshness-locking treatment device includes a support frame, a first conveying assembly and a vacuum chamber mounted on the support frame, a liquid nitrogen tank mounted at one end of the support frame, a freezer mounted on one side of the liquid nitrogen tank, and a second conveying assembly between the liquid nitrogen tank and the freezer. The device also includes:

[0010] The heat-sealing assembly, located inside the vacuum chamber, is used to heat-seal the plastic bag containing yellow croaker after vacuuming.

[0011] Multiple clamping components are fixedly installed at equal intervals on the conveyor belt of the first conveying component to clamp the plastic-sealed bags and keep them upright with their top and sides pressed tightly together.

[0012] Preferably, the clamping assembly includes two pairs of clamping plates, wherein a rotating shaft is rotatably connected between two of the clamping plates; a sliding rod is fixedly connected between the other two clamping plates to allow the two pairs of clamping plates to slide; a gear is mounted on one end of the rotating shaft; two racks for driving the gear to rotate are mounted on the bracket, and the two racks are located at opposite ends of the bracket; a cam is mounted on the rotating shaft, and a compression ring is mounted on the sliding rod.

[0013] Preferably, the clamping assembly further includes two support columns and a transverse track fixed at its upper end. The support columns are fixed to the first conveying assembly, and the rotating shaft is rotatably connected within the transverse track. Two clamping plates are fixedly connected to the inner sides of the two transverse tracks, and the sliding rod is slidably connected within the transverse track. Two other clamping plates are fixedly connected to the sliding rod, and a guide slider is provided between the sliding rod and the transverse track. A spring is fixedly connected to one side of the slider and the transverse track. A torsion spring for resetting the rotating shaft is sleeved between the rotating shaft and the transverse track.

[0014] Preferably, the heat-sealing assembly includes two heat-sealing plates and a hydraulic rod mounted on the inner wall of the vacuum chamber for driving the two heat-sealing plates closer or further apart.

[0015] Preferably, the sealing assembly includes an elastic plate installed at the bottom of the vacuum chamber, with a pressure plate at the bottom of the elastic plate to increase the contact surface of the elastic plate.

[0016] Preferably, the surface of the clamping plate is provided with a rubber anti-slip layer.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention utilizes two sets of clamping plates to effectively ensure that the bag remains upright during packaging, thereby increasing the efficiency of vacuum packaging. This prevents the bag from lying flat on the conveyor assembly, which would otherwise affect the efficiency and quality of subsequent packaging. Furthermore, the coordinated use of gears, racks, cams, and compression rings automates the upright packaging process, eliminating the need for repeated manual feeding. This allows the machine to quickly move to the next step after packaging, further improving the sealing operation and ensuring both efficiency and packaging quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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 front view structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the front view structure of this utility model. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the front view structure of this utility model. Figure 2 ;

[0023] Figure 4 This is a partial right-side sectional view of the structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the working state of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Support frame; 2. First conveying assembly; 3. Liquid nitrogen tank; 4. Second conveying assembly; 5. Freezer; 6. Clamping plate; 7. Rotating shaft; 8. Sliding rod; 9. Rack; 10. Gear; 11. Cam; 12. Compression ring; 13. Support column; 14. Transverse track; 15. Torsion spring; 16. Slider; 17. Spring; 18. Suction cup; 19. Vacuum box; 20. Heat sealing plate; 21. Hydraulic rod; 22. Elastic plate; 23. Pressure plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 This utility model provides a technical solution:

[0029] A yellow croaker salt precipitation freezing and freshness-locking treatment device includes a support frame 1, a first conveying assembly 2 and a vacuum chamber 19 mounted on the support frame 1, a liquid nitrogen tank 3 mounted at one end of the support frame 1, a freezer 5 mounted on one side of the liquid nitrogen tank 3, and a second conveying assembly 4 between the liquid nitrogen tank 3 and the freezer 5. The device also includes:

[0030] The heat-sealing assembly, located inside the vacuum chamber 19, is used to heat-seal the plastic bag containing the yellow croaker after vacuuming.

[0031] Multiple clamping components are fixedly installed at equal intervals on the conveyor belt of the first conveying component 2 to clamp the plastic-sealed bags and keep them upright with their top and sides pressed tightly together.

[0032] Reference Figure 5 The bag to be packaged is placed between two pairs of clamping plates 6. The suction of the suction cup 18 is used to keep the top of the bag upright. Then, by driving the two clamping plates 6 closer together, the clamping plates 6 clamp the bag and keep the bag stable. The vacuum box 19 is lowered so that the upper side of the bag is between two heat sealing plates 20. The two heat sealing plates 20 are driven closer together by the hydraulic rod 21 to seal the bag.

[0033] This invention uses two sets of clamping plates 6 in the device to keep the bag upright during sealing, thereby avoiding the bag from tilting during the sealing process. This would prevent the vacuum box 19 from completely expelling air when drawing a vacuum, and also prevent the bag from tipping over, which would reduce the sealing effect and quality of the device.

[0034] The clamping assembly includes two pairs of clamping plates 6, with a rotating shaft 7 rotatably connected between the two clamping plates 6; a sliding rod 8 is fixedly connected between the other two clamping plates 6 to allow the two pairs of clamping plates 6 to slide; a gear 10 is mounted on one end of the rotating shaft 7; two racks 9 for driving the gear 10 to rotate are mounted on the bracket 1, with the two racks 9 located at opposite ends of the bracket 1; a cam 11 is mounted on the rotating shaft 7, and a compression ring 12 is mounted on the sliding rod 8.

[0035] Reference Figure 1The first conveying assembly 2 is in operation; at this time, the two pairs of clamping plates 6 are located at the end away from the vacuum box 19. As the first conveying assembly 2 pushes the clamping plates 6 to move closer to the vacuum box 19, as shown in the figure, the gear 10 and the rack 9 mesh. At the same time, the gear 10 rotates on the rack 9 under the drive of the first conveying assembly 2. At this time, the rotating shaft 7 rotates in the forward direction. When the rotating shaft 7 rotates in the forward direction, the protruding position of the cam 11 squeezes the squeezing ring 12, causing the squeezing ring 12 to move away from the cam 11. Meanwhile, the sliding rod 8 gradually moves away from the rotating shaft 7 under the drive of the squeezing ring 12. That is, the clamping plates 6 on the rotating shaft 7 and the clamping plates 6 on the sliding rod 8 move away from each other. When a gap is formed between the two pairs of clamping plates 6, the torsion spring 15 is compressed. Then, the bag to be heat-sealed is placed between the two pairs of clamping plates 6. At the same time, the upper side of the bag is kept upright by the suction cup 18, which can effectively keep the bag upright. At the same time, the suction force of the suction cup 18 prevents the bag from tipping over, making the bag conveying and heat sealing more stable.

[0036] The clamping assembly includes two support columns 13 and a transverse track 14 fixed at their upper ends. The support columns 13 are fixed on the first conveying assembly 2, and the rotating shaft 7 is rotatably connected within the transverse track 14. Two clamping plates 6 are fixedly connected to the inner sides of the two transverse tracks 14, and a sliding rod 8 is slidably connected within the transverse track 14. Two other clamping plates 6 are fixedly connected to the sliding rod 8, and a guide slider 16 is provided between the sliding rod 8 and the transverse track 14. A spring 17 is fixedly connected to one side of the slider 16 and the transverse track 14. A torsion spring 15 for resetting the rotating shaft 7 is sleeved between the rotating shaft 7 and the transverse track 14.

[0037] Reference Figure 3 When the cam 11 squeezes the squeezing ring 12 away, the slider 16 simultaneously squeezes the spring 17 to compress it, while the torsion spring 15 is also in a compressed state. At this time, the first conveying assembly 2 continues to push the bag between the two clamping plates 6 to move towards the side of the vacuum box 19. When the gear 10 and the rack 9 disengage, the torsion spring 15 controls the rotating shaft 7 to rotate in the opposite direction, causing the cam 11 and the squeezing ring 12 to disengage. At this time, the squeezing ring 12 is not squeezed. The slider 16 is pushed closer to the side of the rotating shaft 7 by the restoring force of the spring 17. At this time, the rotating shaft 7 and the two sets of clamping plates 6 on the sliding rod 8 form a clamping force, thereby clamping the upper two ends of the bag. Then the suction cup 18 can be closed until the material moves to the lower side of the vacuum box 19, and the packaging of the bag is completed by the components inside the vacuum box 19.

[0038] After packaging is completed, as the first conveying component 2 continues to push, the packaged bag moves to the rack 9 on the side close to the freezer 5. At this time, the rack 9 drives the gear 10 again to perform the above operation steps, so that the two sets of clamping plates 6 move away from each other. After the two clamping plates 6 move away from each other, the packaged bag enters the liquid nitrogen tank 3 for cooling treatment. The liquid nitrogen tank 3 is subjected to ultra-low temperature liquid nitrogen for 10 minutes, and then it is placed in the -65 degree ultra-low temperature freezer 55 for 24 hours. Finally, it is taken out and placed in the -18 degree cold storage for storage.

[0039] The material is conveyed by two first conveying components 2, and with the rack and pinion 9 as the guide rail and the gear 10 as the driving component, the two sets of clamping plates 6 form an automatic clamping and automatic separation situation, so that the equipment is more efficient and effective in packaging. Secondly, it reduces the manual material feeding steps, further improving the working efficiency of the equipment and realizing rapid packaging.

[0040] The heat sealing assembly includes two heat sealing plates 20 and a hydraulic rod 21 installed on the inner wall of the vacuum chamber 19 for driving the two heat sealing plates 20 closer or further apart.

[0041] Reference Figure 4 When the material moves to the lower side of the vacuum chamber 19, the vacuum chamber 19 descends, covering the inside of the vacuum chamber 19 with the bag. Then, the hydraulic rod 21 pushes the two heat-sealing plates 20 closer together, thereby heat-sealing the upper side of the bag. Afterward, the heat-sealing plates 20 move away, the vacuum chamber 19 rises, and the bag is sealed, which further speeds up the heat-sealing efficiency and makes the heat-sealing process more convenient and faster.

[0042] The sealing assembly includes an elastic plate 22 installed at the bottom of the vacuum chamber 19, and a pressure plate 23 is provided at the bottom of the elastic plate 22 to increase the contact surface of the elastic plate 22.

[0043] Reference Figure 5 When the vacuum box 19 descends to a certain position, the pressure plate 23 and the first conveying component 2 are squeezed together, causing the pressure plate 23 to rise. When the pressure plate 23 rises, the elastic plate 22 contracts, thereby increasing the sealing of the vacuum box 19. Then the vacuum box 19 extracts the vacuum inside, thereby maintaining a vacuum state inside the bag. When the equipment extracts the vacuum, the sealing of the vacuum box 19 is better, which further improves the vacuum sealing quality and efficiency of the equipment. After the equipment is packaged, it can quickly enter the next operation, which further improves the packaging operation of the equipment, while ensuring the working efficiency and packaging quality of the equipment.

[0044] The clamping plate 6 has a rubber anti-slip layer on its surface;

[0045] This is used to increase the friction between the packaging bag and the clamping plate 6, making the packaging bag more stable when placed.

Claims

1. A yellow croaker salt precipitation freezing and freshness-locking treatment device, comprising a support (1), a first conveying component (2) and a vacuum chamber (19) disposed on the support (1), a liquid nitrogen tank (3) disposed at one end of the support (1), a freezer (5) disposed on one side of the liquid nitrogen tank (3), and a second conveying component (4) disposed between the liquid nitrogen tank (3) and the freezer (5), characterized in that: Also includes: The heat-sealing assembly is located inside the vacuum chamber (19) and is used to heat-seal the plastic bag containing the yellow croaker after vacuuming. Multiple clamping components are fixedly installed at equal intervals on the conveyor belt of the first conveying component (2) to clamp the plastic-sealed bag and keep the plastic-sealed bag upright with its top and sides close together.

2. The yellow croaker salt precipitation freezing and freshness-locking treatment device according to claim 1, characterized in that: The clamping assembly includes two pairs of clamping plates (6), wherein a rotating shaft (7) is rotatably connected between the two clamping plates (6); a sliding rod (8) is fixedly connected between the other two clamping plates (6) to allow the two pairs of clamping plates (6) to slide; a gear (10) is installed at one end of the rotating shaft (7); two racks (9) for driving the gear (10) to rotate are installed on the bracket (1), and the two racks (9) are located at both ends of the bracket (1); a cam (11) is installed on the rotating shaft (7), and a compression ring (12) is installed on the sliding rod (8).

3. The yellow croaker salt precipitation freezing and freshness-locking treatment device according to claim 2, characterized in that: The clamping assembly also includes two support columns (13) and a transverse track (14) fixed at its upper end. The support columns (13) are fixed on the first conveying assembly (2), and the rotating shaft (7) is rotatably connected in the transverse track (14). Two clamping plates (6) are fixedly connected to the inner side of the two transverse tracks (14), and the sliding rod (8) is slidably connected in the transverse track (14). The other two clamping plates (6) are fixedly connected to the sliding rod (8), and a guide slider (16) is provided between the sliding rod (8) and the transverse track (14). A spring (17) is fixedly connected to one side of the slider (16) and the transverse track (14). A torsion spring (15) for resetting the rotating shaft (7) is sleeved between the rotating shaft (7) and the transverse track (14).

4. The yellow croaker salt precipitation freezing and freshness-locking treatment device according to claim 1, characterized in that: The heat sealing assembly includes two heat sealing plates (20) and a hydraulic rod (21) mounted on the inner wall of the vacuum chamber (19) for driving the two heat sealing plates (20) closer or further apart.

5. The yellow croaker salt precipitation freezing and freshness-locking treatment device according to claim 1, characterized in that: The sealing assembly includes an elastic plate (22) installed at the bottom of the vacuum chamber (19), and a pressure plate (23) is provided at the bottom of the elastic plate (22) to increase the contact surface of the elastic plate (22).

6. The yellow croaker salt precipitation freezing and freshness-locking treatment device according to claim 2, characterized in that: The surface of the clamping plate (6) is provided with a rubber anti-slip layer.

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