Freezing-free black fish fillet processing production line and production method

Abstract

The freeze-free slurry black fish fillet processing production line of the present invention is sequentially provided with a bleeding and cutting operation table, a fish scale removal machine, a bone removal and slicing operation table, an automatic slicer, an ozone water treatment device, a pickling tank, a cleaning table and a frequency conversion rolling and kneading machine, and the freeze-free slurry black fish fillet processing production method of the present invention is simple to operate and has high work efficiency. Compared with the prior art, the production line and production method of the present invention can efficiently produce freeze-free slurry black fish fillets, and the prepared fish fillets are white and bright, delicious and odorless, tough and have a long shelf life.

Description

Technical Field

[0001] The invention relates to the technical field of aquatic product processing, in particular to a freezing-free slurry black fish processing production line and a production method. Background Art

[0002] Snakehead fish is the common name for black snakehead. Snakehead fish is ferocious, bottom-dwelling, carnivorous, and likes to live in shallow waters with lush aquatic plants. Snakehead fish is delicious and nutritious, and is deeply loved by consumers. It is a fish with high economic value. However, the fishy smell of snakehead fish is relatively strong, and it is easy to rot and deteriorate, affecting the taste. In addition, different processing methods of paste-free snakehead fish fillets will affect the freshness of the fillets. There is no production line and production method suitable for processing snakehead fish fillets in the prior art.

[0003] Therefore, in view of the problems existing in the prior art, it is particularly important to provide a technology that effectively removes the fishy smell of black fish, makes the fish fillets tender and smooth, has a good taste and is durable in preservation. Summary of the invention

[0004] The purpose of the present invention is to avoid the shortcomings of the prior art and provide a black fish fillet processing production line which can effectively remove the fishy smell of black fish, make the fillets tender and smooth, have a good taste and be durable in preservation.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] Provided is a freeze-free black fish fillet processing production line, which is sequentially provided with a bleeding and cutting operation table, a fish scale removing machine, a bone removing and slicing operation table, an automatic slicer, an ozone water treatment device, a pickling tank, a cleaning table and a frequency conversion tumbling machine.

[0007] Among them, a bloodletting pool is set next to the bloodletting and cutting operation table;

[0008] The fish scale removing machine comprises a machine box, at least two water spraying pipes, at least two lower rollers, a lower driving device, at least two upper rollers and an upper driving device, and each lower roller and each upper roller are provided with a convex column on their surfaces; at least two lower rollers are rotatably installed in the machine box, at least two lower rollers are connected by a transmission wheel and a transmission chain, and at least two lower rollers are driven to rotate by the lower driving device; at least two upper rollers are rotatably installed in the machine box, at least two upper rollers are connected by a transmission wheel and a transmission chain, and at least two upper rollers are driven to rotate by the upper driving device; in a side view direction, at least two lower rollers and at least two upper rollers are staggered; each water spraying pipe is provided with a water spraying head, and the water spraying head sprays water toward the upper roller or toward the lower roller;

[0009] The ozone water treatment device includes a treatment tank, an ozone water-gas-liquid mixer and a first ozone generator. The ozone water-gas-liquid mixer transports the ozone water-gas-liquid mixture to the treatment tank; the ozone water-gas-liquid mixer includes a tank body, a plurality of micro mixers and a stirring device. The stirring device is installed inside the tank body. The plurality of micro mixers are evenly distributed around the bottom of the tank body and the micro mixers are connected to the inside of the tank body; each micro mixer includes a liquid inlet pipe, a nozzle, a drainage chamber, an air inlet pipe, a mixing chamber, a diffusion chamber and a guide nozzle. The liquid inlet pipe is provided with a tapered contraction channel that gradually contracts from the tail end to the front end. The front end of the liquid inlet pipe is provided with a nozzle. The nozzle A tapered liquid outlet channel which gradually contracts from the rear end to the front end is provided inside, the rear end of the tapered liquid outlet channel is connected to the tapered contraction channel, the front end of the tapered liquid outlet channel is connected to the drainage chamber and the liquid is sprayed forward; the air inlet pipe is connected to the drainage chamber, the air inlet pipe is located behind the nozzle and is connected to the first ozone generator; the mixing chamber is arranged at the front end of the drainage chamber and the diameter of the mixing chamber is smaller than the diameter of the drainage chamber, the diffusion chamber is arranged at the front end of the mixing chamber and the diameter of the diffusion chamber is larger than the mixing chamber; the guide nozzle is installed at the front end of the diffusion chamber and extends out of the interior of the tank body and tilted upward, and when horizontally projected, the central axis of the guide nozzle deviates from the center of the tank body;

[0010] An ozone wastewater treatment system is also provided, wherein the drainage outlets of the bloodletting pool, the fish scale removal machine and the cleaning table are respectively connected to the water inlet of the ozone wastewater treatment through pipes, and the pipes are respectively equipped with water valves and water pumps; the ozone wastewater treatment system comprises a bracket and a second ozone generator, a first air valve, a first heat exchanger, a first treatment tank, a second heat exchanger and a second treatment tank installed on the bracket, the second ozone generator is connected to the air inlet of the first heat exchanger through a pipe, and the first air valve is installed in the pipe between the second ozone generator and the first heat exchanger; the air outlet of the first heat exchanger is connected to the bottom of the first treatment tank through a pipe, a water inlet spray head is installed on the top of the first treatment tank, the first treatment tank is also provided with a liquid outlet, the liquid outlet is connected to the first inlet of the second heat exchanger through a pipe, and the outlet of the second heat exchanger is connected to the second spray head installed inside the top of the second treatment tank through a pipe; the first heat exchanger is provided with a second air outlet, and the second air outlet is connected to the bottom of the second treatment tank through a pipe.

[0011] Preferably, when at least two lower rollers of the descaling machine rotate synchronously, the convex columns of two adjacent lower rollers pass by each other in an alternating manner; when at least two upper rollers rotate synchronously, the convex columns of two adjacent upper rollers pass by each other in an alternating manner.

[0012] Preferably, a drainage groove is provided below the lower roller, and a filter screen is installed on the upper part of the drainage groove.

[0013] Preferably, the stirring device of the ozone water treatment device includes a motor, a stirring shaft and stirring blades. The motor is installed on the top of the tank body and the motor shaft is set downward. The stirring shaft is connected to the motor shaft through a shaft coupling and the stirring shaft extends into the tank body. The stirring blades are fixed to the stirring shaft.

[0014] Preferably, the automatic slicer adopts the model YC-600S Yanchuang fully automatic CNC electric fish filleting machine; the variable frequency tumbling machine adopts the model ZAGR-800 variable frequency vacuum variable frequency tumbling machine.

[0015] Preferably, the bleeding and cutting operation table and the bone removal and slicing operation table are conventional work tables for use by staff, and the washing table is a work table equipped with a faucet and a drain.

[0016] Another object of the present invention is to avoid the deficiencies in the prior art and provide a method for processing and producing black fish fillets without freezing slurry, which can effectively remove the fishy smell of black fish, make the fillets tender and smooth, have a good taste and be durable in preservation.

[0017] Another object of the present invention is achieved by the following technical solutions:

[0018] A method for processing non-freezing slurry black fish fillet is provided, which uses the above-mentioned non-freezing slurry black fish fillet processing production method, and comprises the following steps:

[0019] (1) Cutting and bleeding: Use a knife to cut open the abdominal vein of the snakehead fish;

[0020] (2) Bleeding pool treatment: The snakehead fish with the abdominal vein cut open is placed in a bleeding pool for 1 to 3 hours;

[0021] (3) Deboning and slicing: Use a knife to cut off the fish meat on both sides of the black fish after bleeding to obtain whole fish meat and remove the fish bones;

[0022] (4) Slicing: placing the whole piece of fish meat obtained in step (3) into an automatic slicer and slicing the fish meat into fillets of uniform thickness;

[0023] (5) Ozone water treatment: The fish fillets are sent to the ozone water treatment device for treatment at a temperature of 6-15°C;

[0024] (6) Marinating: Place the fish fillets treated with ozone water into a marinating tank and add food additives for 8 to 10 hours;

[0025] (7) Cleaning: Clean the marinated fish fillets in the cleaning station;

[0026] (8) Tumbling and kneading: Place the cleaned fish fillets in a variable frequency tumbling and kneading machine for tumbling and kneading;

[0027] Among them, the costs generated in the above steps are transmitted to the ozone wastewater treatment system for treatment.

[0028] Preferably, the snakehead fish in step (1) is fresh snakehead fish, which is placed in a bleeding pool for 2 hours after its abdominal vein is cut and then killed for subsequent operations.

[0029] Preferably, in step (8), the tumbling and kneading method is to rotate forward at 12 rpm for 2 minutes, pause for 30 seconds, reverse at 12 rpm for 2 minutes, rotate forward at 4 rpm for 2 minutes, pause for 30 seconds, reverse at 4 rpm for 2 minutes, and repeat the tumbling and kneading for 30 to 40 minutes as one cycle.

[0030] Preferably, the method further comprises a detection and packaging step, wherein the fish fillets after the tumbling treatment are subjected to metal detection and qualified fish fillets are selected for packaging.

[0031] Beneficial effects of the present invention:

[0032] The freeze-free slurry black fish fillet processing production line of the present invention is sequentially provided with a bleeding and cutting operation table, a fish scale removing machine, a bone removing and slicing operation table, an automatic slicer, an ozone water treatment device, a pickling tank, a cleaning table and a frequency conversion rolling and kneading machine. The black fish is bled and then killed to obtain fillets that are white, bright, delicious and tough. When the upper roller and the lower roller of the fish scale removing machine of the production line of the present invention rotate relatively, the convex columns on the surface contact with the epidermis of the black fish to scrape off the fish scales and push the black fish forward so that the hard fish scales of the black fish can be easily scraped off. After a distance, the fish scales on the surface of the black fish are completely removed, and the fish scale removing effect is good without damaging the fish body and the working efficiency is high.

[0033] The ozone water gas-liquid mixer of the present invention is provided with a plurality of micro mixers, and the plurality of micro mixers are evenly distributed around the bottom of the tank body so that the gas and liquid are evenly distributed in the tank. The liquid inlet pipe of the micro mixer is provided with a tapered contraction channel that gradually contracts from the tail end to the front end. After the liquid enters the tapered contraction channel of the liquid inlet pipe, the flow rate increases and it is sprayed out at high speed through the tapered liquid outlet channel in the nozzle. Due to the high flow rate of the liquid, the pressure around it is reduced. The gas coming out of the air inlet pipe flows to the low pressure place and enters the mixing chamber together with the liquid sprayed from the nozzle to mix. The liquid dissolved with the target gas coming out of the mixing chamber enters the diffusion chamber, and the speed of the fluid is reduced and sprayed in the specified direction under the guidance of the guide nozzle. Among them, the guide nozzle is installed at the front end of the diffusion chamber and extends out of the interior of the tank body and tilted upward. At the same time, in the horizontal projection direction, the central axis of the guide nozzle deviates from the center of the tank body. Compared with the prior art, the distance of the gas-liquid mixture is increased and the fluid spirally rises, the liquid and gas are mixed more fully, and the ozone concentration is higher, which can reach 8.02g / m 3 After being soaked in ozone aqueous solution, the black fish fillets can be kept sterile for a long time. At the same time, ozone can effectively remove the fishy smell of black fish, making the black fish fillets taste better. Moreover, ozone decomposes into non-toxic air and water, which is harmless to the human body.

[0034] The ozone wastewater treatment system of the present invention processes the costs generated by the production line. The ozone must first be cooled by the first heat exchanger before entering the first treatment tank. The solubility of ozone at a lower temperature in wastewater is higher, achieving a better sterilization effect. Ozone releases heat when sterilizing and oxidizing toxic and harmful substances to make them harmless. At this time, the solution treated in the first treatment tank is cooled by the second heat exchanger and then sent to the second treatment tank. The solubility of ozone in a solution at a lower temperature is higher than that at a high temperature. At the same time, fresh cold ozone is continuously added to the second treatment tank. After the secondary ozone treatment, the sterilization and disinfection effect is good and the deodorization effect is excellent.

[0035] The freezing-free slurry black fish fillet processing and production method of the invention has simple operation and high working efficiency.

[0036] Compared with the prior art, the production line and the production method of the present invention can efficiently produce freeze-free black fish fillets, and the prepared fish fillets are white and bright, delicious and free of fishy smell, tough and have a long shelf life. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0038] Figure 1 It is a structural schematic diagram of an embodiment of the freezing-free slurry black fish fillet processing production line of the present invention.

[0039] Figure 2 The present invention is a schematic structural diagram of a fish scale removal machine according to an embodiment of the present invention.

[0040] Figure 3 The figure is a schematic diagram of the lower roller structure of a fish scale remover according to an embodiment of the present invention.

[0041] Figure 4 It is a side view schematic diagram of a fish scale remover according to an embodiment of the present invention.

[0042] Figure 5 It is a schematic structural diagram of an ozone water gas-liquid mixer according to an embodiment of the present invention.

[0043] Figure 6 It is a top view schematic diagram of an ozone water gas-liquid mixer according to an embodiment of the present invention.

[0044] Figure 7 It is a schematic diagram of the structure of a micro mixer of an ozone water gas-liquid mixer according to an embodiment of the present invention.

[0045] Figure 8 It is a schematic diagram of an ozone water treatment system of an ozone water gas-liquid mixer according to an embodiment of the present invention.

[0046] Fig. 9It is a flow diagram of an ozone water treatment system of an ozone water gas-liquid mixer according to an embodiment of the present invention.

[0047] exist Figures 1 to 9 Included are:

[0048] A-1 bleeding and cutting operation table, A-2 bleeding pool;

[0049] B-1 chassis, B-2 upper roller, B-3 lower roller, B-4 boss, B-5 ​​hemispherical, B-6 motor, B-7 transmission B-gear, B-8 aggregate box, B-9 drain trough, B-10 filter, B-11 reducer, B-12 sprinkler head, B-13 water pipe;

[0050] C bone removal and slice taking operation table; D automatic slicer;

[0051] Ozone water treatment device: E-01 ozone water mixer, E-02 first ozone generator, E-04 treatment tank;

[0052] F pickling tank, G washing table, H variable frequency tumbling machine;

[0053] I Ozone wastewater treatment system: I1 bracket, I2 first air valve, I3 first heat exchanger, I4 first treatment tank, I5 second heat exchanger, I6 second treatment tank, I7 second air valve, I8 softening box, I9 ozone generator. DETAILED DESCRIPTION

[0054] The present invention will be further described with reference to the following examples.

[0055] Example 1

[0056] Referring to the attached drawings, the freeze-free black fish fillet processing production line of this embodiment is provided with a bleeding and cutting operation table, a fish scale removal machine, a bone removal and slicing operation table, an automatic slicer, an ozone water treatment device, a pickling tank, a cleaning table and a variable frequency rolling and kneading machine in sequence, wherein a bleeding pool is provided next to the bleeding and cutting operation table, and a water pump is installed in the bleeding pool. The bleeding and cutting operation table and the bone removal and slicing operation table are conventional work tables for staff to use, and the cleaning table is a work table with a faucet and a drain trough. The automatic slicer adopts the model YC-600S Yanchuang fully automatic CNC electric fish fillet cutter; the variable frequency rolling and kneading machine adopts the model ZAGR-800 variable frequency vacuum variable frequency rolling and kneading machine. The automatic slicer and variable frequency rolling and kneading machine of this embodiment can be purchased on the market.

[0057] The descaling machine of this embodiment includes a machine case B-1, at least two lower rollers B-3, a lower driving device, at least two upper rollers B-2 and an upper driving device. At least two lower rollers B-3 are rotatably installed in the machine case B-1, at least two lower rollers B-3 are connected by a transmission wheel and a transmission chain, and at least two lower rollers B-3 are driven to rotate by the lower driving device; at least two upper rollers B-2 are rotatably installed in the machine case B-1, at least two upper rollers B-2 are connected by a transmission wheel and a transmission chain, and at least two upper rollers B-2 are driven to rotate by the upper driving device. In the side view direction, at least two lower rollers B-3 and at least two upper rollers B-2 are staggered, and a convex column B-4 is provided on the surface of each lower roller B-3 and each upper roller B-2. During operation, the upper roller B-2 and the lower roller B-3 rotate relative to each other, and the boss B-4 can contact the surface of the sea bass to scrape the scales and push the fish forward. A collection box 8 is provided in front of the discharge port between at least two lower rollers B-3 and at least two upper rollers B-2. The sea bass that has been scaled falls into the collection box 8 and is then transported to the next process for processing. The number and density of the bosses B-4 are set according to actual conditions, and the lengths of at least two bosses B-4 can be set to be different. In order to prevent the bosses B-4 from being too sharp and scratching the body of the sea bass, the free outer end of the boss B-4 of this embodiment is set to be hemispherical. When at least two lower rollers B-3 rotate synchronously, the bosses B-4 of the two adjacent lower rollers B-3 pass by each other in an interlaced manner. When at least two upper rollers B-2 rotate synchronously, the bosses B-4 of the two adjacent upper rollers B-2 pass by each other in an interlaced manner. There is a gap between two adjacent lower rollers B-3, and at least two water spray pipes are provided, each of which is equipped with a water spray head, which sprays water toward the upper roller B-2 or the lower roller B-3. The high-velocity water washes away the fish scales on the upper roller B-2 and the lower roller B-3 and flows out from the gap. A drainage trough B-9 is provided below at least two lower rollers B-3 to receive waste water, and a filter screen 10 is installed on the upper part of the drainage trough B-9 to collect the fish scales in the waste water for regular treatment. It should be noted that the upper drive device and the lower drive device of this embodiment are both composed of a motor and a transmission assembly, and the transmission assembly can be composed of a plurality of transmission gears 7 and a plurality of transmission chains. The connection and installation method of the motor and the transmission assembly is a conventional technical means in the field, and those skilled in the art should be able to clearly understand and implement it.

[0058] The ozone water gas-liquid mixer includes a tank body E1, a plurality of micro mixers E2 and a stirring device, wherein the stirring device is installed inside the tank body E1, and the stirring device includes a motor E3-1, a stirring shaft E3-2 and a stirring blade E3-3, wherein the motor E3-1 is installed on the top of the tank body E1 and the rotating shaft of the motor E3-1 is arranged downward, the stirring shaft E3-2 is connected to the rotating shaft of the motor E3-1 through a shaft coupling and the stirring shaft E3-2 extends into the tank body E1, and the stirring blade E3-3 is fixedly connected to the stirring shaft E3-2, and the fixing method can be welding or connection using fasteners such as screws. The stirring device is used to stir the liquid so that the gas and the liquid are fully mixed and contacted to make the gas dissolve better. The plurality of micro mixers E2 are evenly distributed around the bottom of the tank body E1 and the micro mixer E2 is connected to the inside of the tank body E1. Among them, each micro-mixer E2 includes a liquid inlet pipe E2-1, a nozzle E2-2, a drainage chamber E2-3, an air inlet pipe E2-4, a mixing chamber E2-5, a diffusion chamber E2-5 and a guide nozzle E2-7. The liquid inlet pipe E2-1 is provided with a conical contraction channel E2-9 which gradually contracts from the tail end to the front end. The front end of the liquid inlet pipe E2-1 is equipped with a nozzle E2-2. Specifically, the nozzle E2-2 is threadedly connected to the front end of the liquid inlet pipe E2-1.

[0059] A conical liquid outlet channel E2-10 which gradually contracts from the tail end to the front end is provided in the nozzle E2-2. The tail end of the conical liquid outlet channel E2-10 is connected with the conical contraction channel E2-9, and the front end of the conical liquid outlet channel E2-10 is connected with the drainage chamber E2-3 and sprays the liquid forward; the air inlet pipe E2-4 is connected with the drainage chamber and is located behind the nozzle E2-2; the mixing chamber E2-5 is arranged at the front end of the drainage chamber E2-3 and the diameter of the mixing chamber E2-5 is smaller than the diameter of the drainage chamber E2-3, and the diffusion chamber E2-5 is arranged at the front end of the mixing chamber E2-5 and the diameter of the diffusion chamber E2-5 is larger than the mixing chamber E2-5. The guide nozzle E2-7 is installed at the front end of the diffusion chamber E2-5 and extends out of the interior of the tank body E1 and tilted upward. When projected horizontally, the central axis of the guide nozzle E2-7 deviates from the center of the tank body E1. When projected horizontally, the angle at which the central axis of the guide nozzle E2-7 deviates from the center of the tank body E1 is 20°.

[0060] Since the diameter of the mixing chamber E2-5 is relatively small, in order to enhance the load capacity of the mixing chamber E2-5 and prevent it from being easily damaged, the outer wall of the mixing chamber E2-5 of this embodiment is provided with reinforcing ribs, and the front and rear ends of the reinforcing ribs are connected to the drainage chamber E2-3 and the diffusion chamber E2-5.

[0061] The ozone water treatment system includes a bracket I1, which is made of aluminum profiles. A second ozone generator I9, a first air valve I2, a first heat exchanger I3, a first treatment tank I4, a second heat exchanger I5 and a second treatment tank I6 are also provided, which are installed on the bracket I1. The second ozone generator I9 is ​​connected to the air inlet of the first heat exchanger I3 through a pipeline, and the first air valve I2 is assembled in the pipeline between the second ozone generator I9 and the first heat exchanger I3. The air outlet of the first heat exchanger I3 is connected to the bottom of the first treatment tank I4 through a pipeline, and a water inlet spray head is installed on the top of the first treatment tank I4. The first treatment tank I4 is also provided with a liquid outlet, which is connected to the first inlet of the second heat exchanger I5 through a pipeline, and the outlet of the second heat exchanger I5 is connected to the second spray head (not shown in the figure) installed inside the top of the second treatment tank I6 through a pipeline. The first heat exchanger I3 is provided with a second air outlet, and the second air outlet is connected to the bottom of the second treatment tank I6 through a pipeline, and the pipeline between the first heat exchanger I3 and the second treatment tank I6 is installed with a second air valve I7. In order to obtain a better sterilization effect, the tank wall of the first treatment tank I4 and the second treatment tank I6 of this embodiment is set as a double-layer structure, and an ultrasonic generator is installed between the inner layer and the outer layer of the tank wall, and the high-frequency vibration of the ultrasonic wave is used to allow ozone to fully contact with the wastewater to improve the treatment efficiency. It should be noted that the second ozone generator I9, the first air valve I2, the first heat exchanger I3, the first treatment tank I4, the second heat exchanger I5 and the second treatment tank I6 used in this embodiment can all be purchased from the market, and those skilled in the art should be able to understand the technology and installation of the specific equipment. The present invention only creatively combines the existing equipment together and obtains substantial progress.

[0062] At the same time, the present embodiment provides a method for producing and processing the freeze-free slurry black fish fillet.

[0063] A method for processing non-freezing slurry black fish fillet is provided, which uses the non-freezing slurry black fish fillet processing production line as described above, and comprises the following steps:

[0064] (1) Cutting and bleeding: Use a knife to cut open the abdominal vein of the snakehead fish;

[0065] (2) Bleeding pool treatment: The snakehead fish with the abdominal vein cut open is placed in a bleeding pool for 1 to 3 hours;

[0066] (3) Deboning and slicing: Use a knife to cut off the fish meat on both sides of the black fish after bleeding to obtain whole fish meat and remove the fish bones;

[0067] (4) Slicing: placing the whole piece of fish meat obtained in step (3) into an automatic slicer and slicing the fish meat into fillets of uniform thickness;

[0068] (5) Ozone water treatment: The fish fillets are sent to the ozone water treatment device for treatment at a temperature of 6-15°C;

[0069] (6) Marinating: Place the fish fillets treated with ozone water into a marinating tank and add food additives for 8 to 10 hours;

[0070] (7) Cleaning: Clean the marinated fish fillets in the cleaning station;

[0071] (8) Tumbling: Place the cleaned fish fillets in a variable frequency tumbling machine and tumble them. The tumbling method is to rotate forward at 12 rpm for 2 minutes, pause for 30 seconds, reverse at 12 rpm for 2 minutes, rotate forward at 4 rpm for 2 minutes, pause for 30 seconds, reverse at 4 rpm for 2 minutes. Repeat this cycle for 30 to 40 minutes. This tumbling method improves the tenderness of the fish meat, increases the extraction of salt-soluble proteins and their movement to the surface of the meat, and in a controllable tumbling environment, the water retention capacity, yield rate and overall product quality can all be improved.

[0072] Among them, the costs generated in the above steps are transported to the ozone wastewater treatment system for treatment to maintain a good environment and harmlessly treat the wastewater.

[0073] The production method of this embodiment also includes detection and packaging steps, and the fish fillets after tumbling and kneading are subjected to metal detection and qualified fish fillets are selected for packaging.

[0074] Example 2

[0075] The main technical scheme of this embodiment is basically the same as that of embodiment 1. For features not explained in this embodiment, the explanation in embodiment 1 is adopted and will not be repeated here. The snakehead fish in step (1) of the production method is fresh snakehead fish. After the abdominal vein is cut, it is placed in a bleeding pool and cultured for 2 hours before being killed for subsequent operations.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the claims. A person skilled in the art should understand and modify or replace the technical solutions of the present invention with equivalents by referring to the preferred embodiments, but the technical solutions of the present invention are substantially the same and within the scope of protection.

Claims

1. Freezing-free black fish fillet processing production line, characterized by: The equipment is equipped with a bleeding and cutting operation table, a fish scale removal machine, a bone removal and slicing operation table, an automatic slicer, an ozone water treatment device, a pickling tank, a cleaning table and a variable frequency rolling and kneading machine. A bleeding pool is arranged next to the bleeding and cutting operation table. The descaling machine comprises a machine box, at least two water spray pipes, at least two lower rollers, a lower driving device, at least two upper rollers and an upper driving device, and each lower roller and each upper roller are provided with a convex column on their surfaces; the at least two lower rollers are rotatably installed in the machine box, the at least two lower rollers are connected by a transmission wheel and a transmission chain, and the at least two lower rollers are driven to rotate by the lower driving device; the at least two upper rollers are rotatably installed in the machine box, the at least two upper rollers are connected by a transmission wheel and a transmission chain, and the at least two upper rollers are driven to rotate by the upper driving device; in a side view, the at least two lower rollers and the at least two upper rollers are staggered; each water spray pipe is provided with a water spray head, and the water spray head sprays water either toward the upper roller or toward the lower roller; The ozone water treatment device comprises a treatment tank, an ozone water gas-liquid mixer and a first ozone generator. The ozone water gas-liquid mixer transports the ozone water gas-liquid mixture to the treatment tank. The ozone water gas-liquid mixer comprises a tank body, a plurality of micro mixers and a stirring device. The stirring device is installed inside the tank body. The plurality of micro mixers are evenly distributed around the bottom of the tank body and the micro mixers are connected to the inside of the tank body. Each micro mixer comprises a liquid inlet pipe, a nozzle, a drainage chamber, an air inlet pipe, a mixing chamber, a diffusion chamber and a guide nozzle. The liquid inlet pipe is provided with a tapered contraction channel that gradually contracts from the tail end to the front end. The front end of the liquid inlet pipe is provided with a nozzle. A conical liquid outlet channel which gradually contracts from the tail end to the front end is provided in the nozzle, the tail end of the conical liquid outlet channel is connected to the conical contraction channel, the front end of the conical liquid outlet channel is connected to the drainage chamber and the liquid is sprayed forward; the air inlet pipe is connected to the drainage chamber, the air inlet pipe is located behind the nozzle and is connected to the first ozone generator; the mixing chamber is arranged at the front end of the drainage chamber and the diameter of the mixing chamber is smaller than the diameter of the drainage chamber, the diffusion chamber is arranged at the front end of the mixing chamber and the diameter of the diffusion chamber is larger than the mixing chamber; the guide nozzle is installed at the front end of the diffusion chamber and extends out of the interior of the tank body and tilted upward, and when horizontally projected, the central axis of the guide nozzle deviates from the center of the tank body; An ozone wastewater treatment system is also provided, wherein the drainage outlets of the bloodletting pool, the fish scale removal machine and the cleaning table are respectively connected to the water inlet of the ozone wastewater treatment through pipes, and the pipes are respectively equipped with water valves and water pumps; the ozone wastewater treatment system comprises a bracket and a second ozone generator, a first air valve, a first heat exchanger, a first treatment tank, a second heat exchanger and a second treatment tank installed on the bracket, the second ozone generator is connected to the air inlet of the first heat exchanger through a pipe, and the first air valve is installed in the pipe between the second ozone generator and the first heat exchanger; the air outlet of the first heat exchanger is connected to the bottom of the first treatment tank through a pipe, and a water inlet spray head is installed on the top of the first treatment tank. The first treatment tank is also provided with a liquid outlet, which is connected to the first inlet of the second heat exchanger through a pipe, and the outlet of the second heat exchanger is connected to the second spray head installed inside the top of the second treatment tank through a pipe; the first heat exchanger is provided with a second air outlet, and the second air outlet is connected to the bottom of the second treatment tank through a pipe.

2. The freezing-free slurry black fish fillet processing production line according to claim 1 is characterized in that: When at least two lower rollers of the descaling machine rotate synchronously, the convex columns of two adjacent lower rollers pass by each other in an alternating manner; when at least two upper rollers rotate synchronously, the convex columns of two adjacent upper rollers pass by each other in an alternating manner.

3. The freezing-free slurry black fish fillet processing production line according to claim 1 is characterized in that: A drainage groove is arranged below the lower roller, and a filter screen is installed on the upper part of the drainage groove.

4. The freezing-free slurry black fish fillet processing production line according to claim 1 is characterized in that: The stirring device of the ozone water treatment device includes a motor, a stirring shaft and a stirring blade. The motor is installed on the top of the tank body and the motor shaft is set downward. The stirring shaft is connected to the motor shaft through a shaft coupling and extends into the tank body. The stirring blade is fixed to the stirring shaft.

5. The freezing-free slurry black fish fillet processing production line according to claim 1 is characterized in that: The automatic slicer is a Yanchuang fully automatic CNC electric fish fillet slicer of model YC-600S; the variable frequency tumbling machine is a variable frequency vacuum variable frequency tumbling machine of model ZAGR-800.

6. The freezing-free slurry black fish fillet processing production line according to claim 1 is characterized in that: The bleeding and cutting operation table and the bone removal and slicing operation table are work tables for staff to use, and the washing table is a work table provided with a faucet and a drainage trough.

7. A method for processing freeze-free black fish fillet, characterized in that: The freeze-free slurry black fish fillet processing production line according to any one of claims 1 to 6 is applied, comprising the following steps: (1) cutting and bleeding: cutting the abdominal vein of the black fish with a knife; (2) Bleeding pool treatment: The snakehead fish with the abdominal vein cut open is placed in the bleeding pool for 1 hour; (3) Deboning and slicing: Use a knife to cut off the fish meat on both sides of the black fish after bleeding to obtain whole fish slices and remove the fish bones; (4) Slicing: placing the whole piece of fish meat obtained in step (3) into an automatic slicer and slicing the fish meat into fillets of uniform thickness; (5) Ozone water treatment: The fish fillets are sent to the ozone water treatment device for treatment at a temperature of 6-15°C; (6) Marinating: Place the fish fillets treated with ozone water into a marinating tank and add food additives for marinating for 8 to 10 hours; (7) Cleaning: Clean the marinated fish fillets in the cleaning station; (8) Tumbling and kneading: Place the cleaned fish fillets in a variable frequency tumbling and kneading machine for tumbling and kneading; Among them, the costs generated in the above steps are transmitted to the ozone wastewater treatment system for treatment.

8. The method for processing the freezing-free slurry black fish fillet according to claim 7, characterized in that: The snakehead fish in step (1) is fresh snakehead fish. After the abdominal vein is cut, the snakehead fish is placed in a bleeding pool for 2 hours and then killed for subsequent operations.

9. The method for processing the freezing-free slurry black fish fillet according to claim 7, characterized in that: The tumbling and kneading method in step (8) is to rotate forward at 12 rpm for 2 minutes, pause for 30 seconds, reverse at 12 rpm for 2 minutes, rotate forward at 4 rpm for 2 minutes, pause for 30 seconds, reverse at 4 rpm for 2 minutes, and repeat this cycle for 30-40 minutes.

10. The method for processing the freezing-free slurry black fish fillet according to claim 7, characterized in that: The process also includes testing and packaging steps, wherein the fish fillets after tumbling and kneading are subjected to metal detection and qualified fish fillets are selected for packaging.

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