Aquatic product sterilization and odor removal device

Abstract

The application relates to the technical field of aquatic product processing, in particular to an aquatic product sterilization and peculiar smell removal equipment, which comprises a micro-acid electrolytic water generator for generating micro-acid electrolytic water; a soaking box which is provided with a feeding port and a discharging port for input and output of aquatic products and a water inlet and a water outlet for micro-acid electrolytic water introduction and export; a conveying mechanism which is arranged in the soaking box and located between the feeding port and the discharging port; an ultraviolet irradiation mechanism for irradiating aquatic products on the conveying mechanism; and a refrigeration mechanism which is arranged in the soaking box and used for refrigeration of the micro-acid electrolytic water. The utility model aims at overcoming the defects that the existing aquatic product processing technology cannot simultaneously solve the peculiar smell and sterilization of aquatic products, and through the physical and chemical synergistic mechanism, the utility model is convenient to operate, high in working efficiency, and has the functions of sterilization, preservation and peculiar smell removal of aquatic products and products.

Description

Technical Field

[0001] This application relates to the field of aquatic product processing technology, and in particular to a device for sterilizing and removing odors from aquatic products. Background Technology

[0002] Geosmin (GSM) and 2-methylisoborneol (MIB) are the main causes of the persistent "earthy" or "musty" taste in freshwater farmed aquatic products. These substances are primarily produced by cyanobacteria and actinomycetes in the water and are absorbed by farmed fish through their gills and skin, accumulating highly in their muscle and fatty tissue. Even in post-harvest processing, conventional washing, freezing, or cooking are insufficient to effectively remove these fat-soluble odor compounds. They have extremely low sensory thresholds, and once present in fish meat, they severely damage product flavor, reduce consumer acceptance, weaken brand reputation, and cause significant economic losses.

[0003] Currently, methods for removing odors from fish meat include: (1) Physical methods (washing, soaking): These have little effect on odor substances that have penetrated deep into the muscle. (2) Chemical methods (acid / alkali treatment, oxidants): Strong acids, strong alkalis, or high-concentration oxidants (such as ozone water, hydrogen peroxide) may degrade some odor substances, but they are very likely to damage the texture, color, and nutrition of fish meat (such as protein denaturation and vitamin loss) and may produce undesirable byproducts, threatening food safety and not in line with the trend of clean labeling. (3) Biological methods (enzymatic hydrolysis, microbial fermentation): These methods have unstable efficiency and may introduce off-flavors or change the texture. Methods for sterilizing foodborne pathogens in fish meat include: (1) Heat sterilization (pasteurization, scalding): These methods are effective but cause serious loss of heat sensitivity—leading to hardening of the fish meat texture, loss of juice, and deterioration of flavor, especially unsuitable for high-quality or raw aquatic products (such as sashimi-grade fish). (2) Chemical disinfectants (chlorine-containing disinfectants, organic acids): pose a risk of residue (such as chloroform), may produce an odor (chlorine smell), and may corrode equipment. (3) Irradiation: although effective, the equipment is expensive and regulations are strict.

[0004] Therefore, existing technologies cannot simultaneously address the needs of both odor removal and sterilization, making it difficult to solve the two core challenges of removing deep-seated odor substances and controlling pathogenic microorganisms while ensuring the high-quality sensory attributes and safety of fish meat. Utility Model Content

[0005] Therefore, the purpose of this invention is to overcome the shortcomings of existing aquatic product processing technologies that cannot simultaneously address both odor and sterilization in aquatic products, and to provide an aquatic product sterilization and odor removal device. This invention utilizes a synergistic physical and chemical mechanism, is easy to operate, highly efficient, and simultaneously sterilizes, preserves, and removes odors from aquatic products and their processed products.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A device for sterilizing and deodorizing aquatic products, comprising: Slightly acidic electrolyzed water generator: used to produce slightly acidic electrolyzed water; Soaking tank: It is equipped with a feeding port and a discharging port for the input and output of aquatic products, as well as an inlet and an outlet for the introduction and export of slightly acidic electrolyzed water; Conveying mechanism: located in the soaking tank and between the feeding port and the discharge port; Ultraviolet irradiation mechanism: used to irradiate aquatic products located on the conveying mechanism; A refrigeration mechanism is provided in the soaking tank and is used for cooling the slightly acidic electrolyzed water.

[0007] This application utilizes a slightly acidic electrolyzed water generator to produce slightly acidic electrolyzed water, which is then introduced into a soaking tank through an inlet. Aquatic products are fed into the tank via a conveyor mechanism, which moves the products within the tank, immersing them in the slightly acidic electrolyzed water. A refrigeration unit maintains the slightly acidic electrolyzed water at a low temperature, preserving the freshness of the aquatic products. During the conveying process, an ultraviolet irradiation unit irradiates the aquatic products on the conveyor mechanism. Ultraviolet irradiation decomposes the main component of the slightly acidic electrolyzed water, hypochlorous acid, into chlorine and hydroxyl radicals, which have strong oxidizing properties and effectively reduce and kill off-odors and bacteria in fish. This application employs a synergistic physical and chemical mechanism, offering convenient operation and high efficiency. It simultaneously sterilizes and preserves aquatic products and their processed products while removing odors, providing the aquatic product processing industry with a safe, efficient, and quality-maintaining integrated solution for odor removal and sterilization. This significantly contributes to increasing the added value of aquatic products, protecting consumer health, and enhancing market competitiveness.

[0008] Furthermore, the opening height of the water inlet is lower than the opening height of the water outlet.

[0009] This application's soaking tank introduces slightly acidic electrolyzed water from a low position and exits it from a high position, maintaining a constant liquid level in the soaking tank. It continuously introduces slightly acidic electrolyzed water from the inlet and continuously overflows from the outlet, guiding the slightly acidic electrolyzed water into a slightly acidic electrolyzed water generator for secondary treatment and recycling. During the continuous overflow process, the slow water flow inside the tank facilitates the uniform distribution of active substances, enabling better reduction and elimination of odor substances and bacteria in aquatic products.

[0010] Furthermore, the conveying mechanism includes a first conveyor belt and a second conveyor belt connected end to end. The conveying surface of the first conveyor belt is lower than the height of the water outlet. One end of the second conveyor belt receives the end of the first conveyor belt, and the other end of the second conveyor belt is connected to the discharge port.

[0011] The conveying surface of the first conveyor belt in this application is lower than the height of the water outlet, which can keep the conveying surface of the first conveyor belt lower than the liquid surface in the soaking tank. In this way, when the aquatic products are slowly conveyed on the first conveyor belt, they can be ensured to be immersed in the slightly acidic electrolyzed water, so that they can be in complete contact with the slightly acidic electrolyzed water. This allows the strong oxidizing substances decomposed under ultraviolet light to remove odors and sterilize the aquatic products. After the second conveyor belt receives the processed aquatic products, it slowly removes them from the slightly acidic electrolyzed water and conveys them to the discharge port to complete the unloading. During this process, the second conveyor belt can be adaptively tilted according to the relative position of the discharge port and the end of the first conveyor belt.

[0012] Furthermore, the first conveyor belt includes an annular conveyor belt, rollers disposed at both ends of the annular conveyor belt, and a drive device connected to the rollers and used to drive the rollers to rotate; the structure of the second conveyor belt is the same as that of the first conveyor belt.

[0013] Furthermore, the annular conveyor belt is provided with several baffles evenly spaced apart. This application uses baffles to divide the annular conveyor belt, which on the one hand can coordinate with the feeding rhythm to prevent the aquatic products from sliding and piling up together, and ensure that they are more fully irradiated by ultraviolet light during the conveying process.

[0014] Furthermore, the ultraviolet irradiation mechanism includes a first ultraviolet lamp group located inside the soaking tank for irradiating the lower surface of the aquatic products, and a second ultraviolet lamp group located outside the soaking tank for irradiating the upper surface of the aquatic products.

[0015] Two sets of ultraviolet lamps are set up to irradiate the top and bottom surfaces of the aquatic products with ultraviolet light, thereby increasing the irradiation area and ensuring that all sides of the aquatic products can be completely sterilized, thus improving the sterilization and deodorization effects.

[0016] Furthermore, the first ultraviolet lamp group includes several ultraviolet lamps located in the middle of the annular conveyor belt; the second ultraviolet lamp group includes several protective covers mounted above the immersion tank, and several ultraviolet lamps disposed within the protective covers. The protective covers reduce ultraviolet light leakage and reflect and concentrate the ultraviolet light.

[0017] Furthermore, the ultraviolet lamp includes an ultraviolet lamp column and a quartz tube lamp cover that surrounds the ultraviolet lamp column.

[0018] Furthermore, the refrigeration mechanism includes refrigeration pipes evenly distributed at the bottom of the soaking tank. These refrigeration pipes maintain the slightly acidic electrolyzed water inside the tank at a consistently low temperature, which is beneficial for preserving the quality of the fish.

[0019] Furthermore, the soaking tank includes a tank body, an adjustable support leg located at the bottom of the tank body, and a movable wheel located at the end of the support leg.

[0020] Compared with the prior art, the beneficial effects of this utility model are: (1) The slightly acidic electrolyzed water generator of this application generates slightly acidic electrolyzed water and introduces it into the soaking tank through the water inlet. Aquatic products can be put into the conveying mechanism in the soaking tank through the feeding port. The conveying mechanism drives the aquatic products to move in the soaking tank. The aquatic products are immersed in the slightly acidic electrolyzed water in the soaking tank. The refrigeration mechanism maintains the slightly acidic electrolyzed water at a low temperature, which plays a role in preserving the freshness of the aquatic products. During the conveying process, the ultraviolet irradiation mechanism irradiates the aquatic products located on the conveying mechanism. The ultraviolet irradiation can decompose the main component of the slightly acidic electrolyzed water, hypochlorous acid, into chlorine free radicals and hydroxyl free radicals, which have strong oxidizing properties and can effectively reduce and kill the odor substances and bacteria of fish meat.

[0021] (2) This application uses a physical and chemical synergistic mechanism, is easy to operate, and has high work efficiency. It can simultaneously sterilize and preserve aquatic products and their products and remove odors. It provides the aquatic product processing industry with a safe, efficient and quality-preserving integrated solution for fish meat odor removal and sterilization, which plays an important role in improving the added value of aquatic products, protecting consumer health, and enhancing market competitiveness. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in one embodiment; Figure 2 This is a schematic diagram of the soaking tank portion in one embodiment; Figure 3 This is a top view of the structure in one embodiment; Figure 4 This is a schematic diagram of the refrigeration mechanism in one embodiment; Figure 5 This is a schematic diagram of the structure of the annular conveyor belt and baffle in one embodiment.

[0023] 1-Slightly acidic electrolyzed water generator; 2-Soaking tank; 20-Tank body; 21-Inlet; 22-Outlet; 23-Feeding port; 24-Discharge port; 25-Adjustable support leg; 26-Moving wheel; 3-Conveying mechanism; 31-First conveyor belt; 311-Circular conveyor belt; 312-Roller; 313-Drive device; 314-Baffle; 32-Second conveyor belt; 4-Ultraviolet irradiation mechanism; 41-First ultraviolet lamp group; 42-Second ultraviolet lamp group; 421-Protective cover; 422-Ultraviolet lamp column; 423-Quartz tube lamp cover; 5-Refrigeration mechanism. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this application. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Example 1 like Figure 1 As shown, this embodiment provides a sterilization and deodorization device for aquatic products, including: Slightly acidic electrolyzed water generator 1: Used to produce slightly acidic electrolyzed water; Soaking tank 2: It is equipped with a feeding port 23 and a discharging port 24 for the input and output of aquatic products, and an inlet 21 and an outlet 22 for the introduction and export of slightly acidic electrolyzed water. Conveying mechanism 3: Located in the soaking tank 2 and between the feeding port 23 and the discharge port 24; Ultraviolet irradiation mechanism 4: used to irradiate aquatic products located on the conveying mechanism 3; The refrigeration unit 5 is located in the soaking tank 2 and is used for refrigerating slightly acidic electrolyzed water.

[0028] In this embodiment, the slightly acidic electrolyzed water generator 1 is an existing, purchased device.

[0029] The principle of preparing slightly acidic electrolyzed water is to electrolyze the electrolyte (usually a mixture of dilute salt and dilute hydrochloric acid solutions) by applying a direct current voltage to a diaphragm-free electrolytic cell, producing slightly acidic water with a specific pH value, oxidation-reduction potential (ORP), and effective chlorine concentration (ACC). A flow pump is mainly used to pump water containing odorous substances, bacteria, and algae, along with the electrolyte, into the electrolytic cell. Under the action of direct current, chlorides and hydroxides near the anode lose electrons to form hypochlorite (ClO₂). - Substances such as hypochlorous acid (HClO) and other similar substances.

[0030] The main electrode reactions are as follows: Anode: H₂O → 1 / 2O₂ + 2H₂O + + 2e - ; 2Cl - → Cl2 + 2e - ; Cl2 + H2O → HCl + HClO; like Figure 3 and Figure 4 As shown, the refrigeration mechanism 5 includes refrigeration pipes evenly distributed at the bottom of the soaking tank 2. The refrigeration pipes can keep the slightly acidic electrolyzed water inside the tank 20 at a low temperature, which is beneficial to maintaining the quality of the fish meat.

[0031] The working principle of this application is as follows: The main function of this application in killing and reducing bacteria and odor substances is to use ultraviolet light irradiation to decompose hypochlorous acid (HClO), the main component of slightly acidic electrolyzed water, into chlorine free radicals and hydroxyl free radicals. These free radicals have strong oxidizing properties and can degrade odor substances while killing bacteria. If slightly acidic electrolyzed water is not prepared, relying solely on ultraviolet light irradiation can only achieve limited sterilization, and has almost no reduction effect on geosmin (GSM) and 2-methylisoborneol (MIB). The slightly acidic electrolyzed water generator 1 of this application generates slightly acidic electrolyzed water, which is introduced into the soaking tank 2 through the water inlet 21. Aquatic products can be put into the conveying mechanism 3 in the soaking tank 2 through the feeding port 23. The conveying mechanism 3 moves the aquatic products in the soaking tank 2. The aquatic products are immersed in the slightly acidic electrolyzed water in the soaking tank 2. The refrigeration mechanism 5 maintains the slightly acidic electrolyzed water at a low temperature, which plays a role in preserving the freshness of the aquatic products. During the conveying process, the ultraviolet irradiation mechanism 4 irradiates the aquatic products located on the conveying mechanism 3. The ultraviolet irradiation can decompose the main component of the slightly acidic electrolyzed water, hypochlorous acid, into chlorine free radicals and hydroxyl free radicals, which have strong oxidizing properties and can effectively reduce and kill the odor substances and bacteria in the fish meat.

[0032] In this embodiment, the opening height of the inlet 21 is lower than the opening height of the outlet 22.

[0033] The soaking tank 2 of this application introduces slightly acidic electrolyzed water from a low position and exits it from a high position, which can maintain a constant liquid level in the soaking tank 2. Slightly acidic electrolyzed water is continuously introduced from the inlet 21, and the slightly acidic electrolyzed water that overflows from the outlet 22 is introduced into the slightly acidic electrolyzed water generator 1 for secondary treatment and then recycled. During the continuous overflow process, the water flow in the tank 20 is slow, which is conducive to the uniform distribution of active substances and can better reduce and kill odor substances and bacteria in aquatic products.

[0034] like Figure 1 As shown, the conveying mechanism 3 includes a first conveyor belt 31 and a second conveyor belt 32 connected end to end. The conveying surface of the first conveyor belt 31 is lower than the height of the water outlet 22. One end of the second conveyor belt 32 is connected to the end of the first conveyor belt 31, and the other end of the second conveyor belt 32 is connected to the discharge port 24.

[0035] The conveying surface of the first conveyor belt 31 is lower than the height of the outlet 22, which keeps the conveying surface of the first conveyor belt 31 lower than the liquid level in the soaking tank 2. This ensures that the aquatic products are immersed in the slightly acidic electrolyzed water when they are slowly conveyed on the first conveyor belt 31, so that they are in complete contact with the slightly acidic electrolyzed water. This allows the strong oxidizing substances decomposed under ultraviolet light to remove odors and sterilize the aquatic products. The second conveyor belt 32 receives the processed aquatic products and slowly removes them from the slightly acidic electrolyzed water, and then conveys them to the discharge port 24 to complete the unloading. During this process, the second conveyor belt 32 can be adaptively tilted according to the relative position of the discharge port 24 and the end of the first conveyor belt 31.

[0036] like Figure 2 As shown, the first conveyor belt 31 includes an annular conveyor belt 311, rollers 312 disposed at both ends of the annular conveyor belt 311, and a drive device 313 connected to the rollers 312 and used to drive the rollers 312 to rotate; the structure of the second conveyor belt 32 is the same as that of the first conveyor belt 31.

[0037] In this embodiment, the annular conveyor belt 311 is a mesh surface.

[0038] In this embodiment, the driving device 313 is a servo motor.

[0039] like Figure 5 As shown, the annular conveyor belt 311 is provided with several baffles 314 evenly spaced. This application uses baffles 314 to divide the annular conveyor belt 311, which can, on the one hand, coordinate with the feeding rhythm to prevent the aquatic products from sliding and piling up together, and ensure that they are more fully irradiated by ultraviolet light during the conveying process.

[0040] The advantages of this application are: through a physical and chemical synergistic mechanism, it is easy to operate and highly efficient, and can simultaneously sterilize and preserve aquatic products and their products as well as remove odors. It provides the aquatic product processing industry with a safe, efficient, and quality-preserving integrated solution for fish meat odor removal and sterilization, which plays an important role in increasing the added value of aquatic products, protecting consumer health, and enhancing market competitiveness.

[0041] Example 2 This embodiment is similar to Embodiment 1, except that in this embodiment: like Figure 1 As shown, the ultraviolet irradiation mechanism 4 includes a first ultraviolet lamp group 41 located inside the soaking tank 2 for irradiating the lower surface of the aquatic products, and a second ultraviolet lamp group 42 located outside the soaking tank 2 for irradiating the upper surface of the aquatic products.

[0042] Two sets of ultraviolet lamps are set up to irradiate the top and bottom surfaces of the aquatic products with ultraviolet light, thereby increasing the irradiation area and ensuring that all sides of the aquatic products can be completely sterilized, thus improving the sterilization and deodorization effects.

[0043] like Figure 2 As shown, the first ultraviolet lamp group 41 includes several ultraviolet lamps located in the middle of the circular conveyor belt 311; the second ultraviolet lamp group 42 includes several protective covers 421 mounted above the immersion tank 2, and several ultraviolet lamps disposed within the protective covers 421. The protective covers 421 are provided to reduce the leakage of ultraviolet light and to reflect and concentrate the ultraviolet light.

[0044] Furthermore, the ultraviolet lamp includes an ultraviolet lamp post 422 and a quartz tube lamp cover 423 that surrounds the ultraviolet lamp post 422.

[0045] The other principles and structures of this embodiment are the same as those of Embodiment 1.

[0046] Example 3 This embodiment is similar to Embodiment 1, except that in this embodiment: like Figure 2 As shown, the soaking tank 2 includes a tank body 20, an adjustable support leg 25 located at the bottom of the tank body 20, and a movable wheel 26 located at the end of the support leg.

[0047] The other principles and structures of this embodiment are the same as those of Embodiment 1.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A sterilization and deodorization device for aquatic products, characterized in that, include: Slightly acidic electrolyzed water generator (1): used to generate slightly acidic electrolyzed water; Soaking tank (2): It is equipped with a feeding port (23) and a discharging port (24) for the input and output of aquatic products, and an inlet (21) and an outlet (22) for the introduction and output of slightly acidic electrolyzed water. Conveying mechanism (3): Located in the soaking tank (2) and between the feeding port (23) and the discharge port (24); Ultraviolet irradiation mechanism (4): used to irradiate aquatic products located on the conveying mechanism (3); A refrigeration mechanism (5) is provided in the soaking tank (2) and is used for refrigerating slightly acidic electrolyzed water.

2. The aquatic product sterilization and deodorization equipment according to claim 1, characterized in that, The opening height of the inlet (21) is lower than the opening height of the outlet (22).

3. The aquatic product sterilization and deodorization equipment according to claim 2, characterized in that, The conveying mechanism (3) includes a first conveyor belt (31) and a second conveyor belt (32) connected end to end. The conveying surface of the first conveyor belt (31) is lower than the height of the outlet (22). One end of the second conveyor belt (32) is connected to the end of the first conveyor belt (31), and the other end of the second conveyor belt (32) is connected to the outlet (24).

4. The aquatic product sterilization and deodorization equipment according to claim 3, characterized in that, The first conveyor belt (31) includes an annular conveyor belt (311), rollers (312) disposed at both ends of the annular conveyor belt (311), and a drive device (313) connected to the rollers (312) and used to drive the rollers (312) to rotate; the structure of the second conveyor belt (32) is the same as that of the first conveyor belt (31).

5. The aquatic product sterilization and deodorization equipment according to claim 4, characterized in that, The annular conveyor belt (311) is provided with several baffles (314) arranged at even intervals.

6. The aquatic product sterilization and deodorization equipment according to claim 4, characterized in that, The ultraviolet irradiation mechanism (4) includes a first ultraviolet lamp group (41) located inside the soaking tank (2) for irradiating the lower surface of the aquatic products, and a second ultraviolet lamp group (42) located outside the soaking tank (2) for irradiating the upper surface of the aquatic products.

7. The aquatic product sterilization and deodorization equipment according to claim 6, characterized in that, The first ultraviolet lamp group (41) includes a plurality of ultraviolet lamps located in the middle of the annular conveyor belt (311); the second ultraviolet lamp group (42) includes a plurality of protective covers (421) mounted above the immersion tank (2), and a plurality of ultraviolet lamps disposed in the protective covers (421).

8. The aquatic product sterilization and deodorization equipment according to claim 7, characterized in that, The ultraviolet lamp includes an ultraviolet lamp post (422) and a quartz tube lamp cover (423) that wraps around the ultraviolet lamp post (422).

9. The aquatic product sterilization and deodorization equipment according to claim 1, characterized in that, The refrigeration mechanism (5) includes refrigeration pipes evenly arranged at the bottom of the soaking tank (2).

10. The aquatic product sterilization and deodorization equipment according to claim 1, characterized in that, The soaking tank (2) includes a tank body (20), an adjustable support leg (25) located at the bottom of the tank body (20), and a movable wheel (26) located at the end of the support leg.

Images