Marine high-quality euphausia superba pretreatment equipment

Abstract

The invention provides marine high-quality euphausia superba pretreatment equipment which comprises a rack, a husking mechanism, a separation mechanism and a defluorination and preservation mechanism, the husking mechanism is located above the separation mechanism, the husking mechanism and the separation mechanism are arranged on the rack, and the defluorination and preservation mechanism is arranged at the rear end of the separation mechanism; the husking mechanism comprises a first shell, a husking roller, a half grid cage, a power device and an electrostatic generator, a first feeding hole is formed in the upper part of the first shell, and a first discharging hole is formed in the lower part of the first shell; the husking roller is arranged in the first shell and is connected with the power device; the semi-grid cage is semicircular, is arranged at the lower end of the first shell and comprises a plurality of grid bars which are arranged at intervals; the semi-grid cage is positioned below the husking roller and is matched with the husking roller for use; the electrostatic generators are arranged on the two sides of the first discharging opening. The shelling efficiency is effectively improved, the shelled shrimps are high in quality and good in fresh-keeping effect, and the fluorine content and microbial pollution are greatly reduced; meanwhile, the structural design is simple and compact, the size is small, and the occupied area can be reduced.

Description

[Technical field]

[0001] The invention relates to the technical field of aquatic product processing equipment and fresh-keeping thereof, in particular to a ship-based high-quality Antarctic krill pretreatment device. [Background technology]

[0002] As people's living standards improve, their requirements for food are no longer limited to basic color, aroma and taste, but they pay more and more attention to the nutritional value of food. Among them, Antarctic krill is rich in nutrients such as protein, calcium, phosphorus, iron, and contains a large amount of carotene and lysine. Its nutritional value even exceeds that of beef. Therefore, Antarctic krill has a huge market demand due to its high nutritional value and wide application in many fields, thus showing great potential and broad prospects in development and utilization. However, Antarctic krill is small in size and has a hard shell. Manual shelling or ordinary machine shelling can easily cause incomplete separation of shrimp shells and shrimp meat. In addition, Antarctic krill has a high fluorine content. Excessive intake can cause a series of biological damage. These reasons have seriously restricted the development of Antarctic krill, thereby affecting the processing and edible safety of shrimp. Existing shrimp shelling equipment is generally complex, and a variety of actuators are designed to complete the shelling action. The equipment is large and difficult to maintain.

[0003] Therefore, there is an urgent need for an Antarctic krill shelling device that can improve the shelling efficiency and a pretreatment method that can reduce the fluorine content and enhance the preservation effect. [Summary of the invention]

[0004] The technical problem to be solved by the present invention is to provide a high-quality Antarctic krill pretreatment equipment for ship, which effectively improves the efficiency of shelling, and the shrimp meat after shelling is of high quality, good preservation effect, and greatly reduces the fluorine content and microbial pollution; at the same time, its structural design is simple, compact, and small in size, which can reduce the floor space; it overcomes the problems of high labor intensity, low production efficiency, easy product contamination and incomplete shelling of traditional manual shelling.

[0005] The present invention is achieved in that:

[0006] A ship-based high-quality Antarctic krill pretreatment device, comprising a frame, a shelling mechanism, a separation mechanism, and a defluorination and fresh-keeping mechanism, wherein the shelling mechanism and the separation mechanism are both arranged on the frame, the shelling mechanism is located above the separation mechanism, and the defluorination and fresh-keeping mechanism is arranged at the rear end of the separation mechanism;

[0007] The shelling mechanism includes a first shell, a shelling roller, a half-grid cage, a power device and an electrostatic generator. The first shell is provided with a first feed port on the top and a first discharge port on the bottom. The shelling roller is rotatably arranged inside the first shell, and the shelling roller is provided with rotational power by the power device. The half-grid cage is arranged at the lower end of the first shell, and the half-grid cage is semicircular and includes a plurality of grid bars arranged at intervals. The half-grid cage is located below the shelling roller and is used in conjunction with the shelling roller. The electrostatic generator is arranged on both sides of the first discharge port. The shelling is performed by the extrusion force and impact force generated by the relative rotation between the shelling roller and the half-grid cage, so that the Antarctic krill are initially separated.

[0008] The separation mechanism includes a second shell, a fan and a shrimp shell collection box, a second feed port is provided in the middle of the second shell, and the second feed port is located directly below the first discharge port; an air supply channel is provided at the rear end of the second shell, and the rear end of the air supply channel is connected to the fan; a shrimp shell separation channel is provided at the front end of the second shell, and a shrimp meat separation channel is provided at the lower end of the second shell; the shrimp shell collection box is located at the outlet of the shrimp shell separation channel; the second feed port is located between the air supply channel and the shrimp shell separation channel, and the shrimp meat separation channel is located below the second feed port; and the shrimp shell separation channel is arranged obliquely upward, and the shrimp meat separation channel is arranged obliquely downward; a screen is provided on the shrimp meat separation channel;

[0009] The defluorination and fresh-keeping mechanism comprises a light-shielding shell, a conveyor belt, a spray device, and a lighting device. One end of the conveyor belt is located below the outlet of the shrimp separation channel, and the transmission belt passes through the middle of the light-shielding shell. The upper end of the light-shielding shell is provided with a spray device, and the spray device sprays a defluorination and fresh-keeping agent downward onto the shrimp. The defluorination and fresh-keeping agent is acidic electrolyzed water containing curcumin, and the content of the curcumin is 45-55uM. The lighting device is arranged inside the light-shielding shell and above the conveyor belt. The wavelength of the light source of the lighting device is 420-480nm.

[0010] The conveyor belt stays for 25-60 seconds when passing through the light source area in the light-shielding housing, so that the light source fully illuminates the shrimps sprayed with the defluorination preservative.

[0011] Furthermore, the output voltage of the electrostatic generator is 1-1.8KV; the electrostatic generator is composed of two 1-1.8kv symmetrically placed low-voltage electrostatic plates. After the first shelling, the shrimp enters the electrostatic generating area of ​​the electrostatic generator, and the debris shell adhering to the shrimp is separated from the shrimp meat for a second time due to the electrostatic repulsion.

[0012] Furthermore, a plurality of shelling grooves are provided on the outer surface of the shelling roller, and each of the shelling grooves is perpendicular to the rotation direction of the shelling roller.

[0013] Furthermore, the rotation speed of the shelling roller is 2-4m / s; the spacing between the bars of the half-grid cage is 5-6mm. The impact force generated by the shelling roller speed of 2-4m / s can just break the Antarctic krill shell without destroying the integrity of the Antarctic krill meat, wherein the spacing between the bars is 5-6mm, and such a gap size is just enough to allow the Antarctic krill meat that has been shelled to pass through, while the Antarctic krill that has not been shelled can not pass through. The Antarctic krill that has not been broken continues to be shelled multiple times in the half-grid cage until its shell is broken.

[0014] Furthermore, the screen is a hollow groove with a width of 1 mm, which can screen out the shrimp shells entering the shrimp separation channel.

[0015] Furthermore, the shrimp shell separation channel and the shrimp meat separation channel have an inclination angle of 30-45° with the horizontal plane, which can better separate the shrimp shells and shrimp meat.

[0016] Furthermore, the wind speed of the fan is set to 2-2.5 m / s.

[0017] Furthermore, the amount of curcumin added to the defluorination preservative is 50uM, the pH value of the acidic electrolyzed water is 5.0-6.0, and the effective chlorine concentration is 10-20ppm; the wavelength of the light source of the lighting device is 425nm; the conveyor belt stays for 20-30s when passing through the light source area in the shading shell to allow the light source to fully illuminate; the lighting device is waterproof; and the lighting device is fixed inside the shading shell by magnetic attraction.

[0018] Furthermore, the first shell includes an upper shell and a lower shell, and the upper shell and the lower shell are detachably connected by bolts.

[0019] Furthermore, a moving wheel is arranged below the frame, and a limiting device is arranged on the moving wheel, so as to facilitate the movement and fixation of the frame, the shelling mechanism and the separation mechanism.

[0020] The present invention has the following advantages:

[0021] In the technical solution, by arranging a half cage in the shelling roller, it can separate the Antarctic krill whose shells and kernels have been completely separated from the Antarctic krill that have not been shelled, so that the Antarctic krill that have not been shelled can continue to complete the shelling process under the action of the roller, which greatly improves the accuracy and efficiency of shelling and liberates manual labor;

[0022] In the technical scheme, a low-voltage electrostatic generator is added to form an electrostatic generating area, and the electrostatic repulsion is used to make the small pieces of shell debris and shrimp meat adhered to the shrimp meat undergo a secondary shelling. The stable low-voltage static electricity can better maintain the quality of Antarctic krill, improve the shelling efficiency, improve the quality of shrimp meat, and solve the problems of low efficiency, high breakage rate, and insufficient automation of existing krill shelling equipment.

[0023] In the technical scheme, a spray device is arranged in the defluorination and preservation mechanism for spraying acidic electrolyzed water containing curcumin, and a lighting device with a wavelength of 420-480nm is arranged for activating trace curcumin in the acidic electrolyzed water, and the conveyor belt stays in the preservation area for 20-30s, so that the Antarctic krill can be sprayed with uniform preservation liquid and fully illuminated after peeling; under the condition of light with a wavelength of 425nm, curcumin forms a strong and stable complex with fluoride ions in fluoride, significantly reducing the concentration of free fluoride ions in Antarctic krill, and at the same time, the light-activated curcumin produces active oxygen, destroys microbial cell membranes, DNA, and proteins, inhibits the growth of microorganisms, and can significantly inhibit the activity of peroxidase, thereby increasing the antioxidant activity of shrimp, so as to achieve better preservation and fluoride reduction effects.

[0024] This technical solution overcomes the problems of high labor intensity, low production efficiency, easy product contamination and incomplete shelling in traditional manual shelling, and also has a good preservation effect on Antarctic krill, greatly reducing the fluorine content and microbial contamination. In addition, the present invention can better peel off the debris shell adhering to the shrimp meat during the shelling process, so that the shrimp meat maintains good quality, solves the technical effect of Antarctic krill shelling, and overcomes the existing technical barriers. At the same time, the present invention has a simple and compact structural design, a small volume, and can reduce the floor space.

Brief Description of the Drawings

[0025] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of a front view of a ship-based high-quality Antarctic krill pretreatment device according to the present invention.

[0027] Figure 2 This is a schematic diagram from another perspective of a ship-based high-quality Antarctic krill pretreatment device of the present invention.

[0028] Figure 3 This is an exploded view of a ship-based high-quality Antarctic krill pretreatment device of the present invention.

[0029] Figure 4 The present invention is a schematic diagram of a shelling mechanism of a ship-based high-quality Antarctic krill pretreatment device.

[0030] Figure 5This is a schematic diagram of the cooperation between the half cage and the lower shell of a ship-based high-quality Antarctic krill pretreatment device of the present invention.

[0031] Figure 6 This is a schematic structural diagram of a second shell of a ship-based high-quality Antarctic krill pretreatment device according to the present invention.

[0032] Figure 7 The figure is a comparative diagram of the loss rate (a), TVB-N (b), MDA (c), fluorine content (d), total colony count (e), and shelling integrity (f) of mechanically shelled and manually shelled shrimps after being treated with the pretreatment equipment in the embodiment of the present invention, wherein different lowercase letters a, b indicate that there are significant differences between the different shelling methods (p<0.05), and the same lowercase letters indicate that there are no significant differences between the different shelling methods (p>0.05).

[0033] Figure 8 This is a schematic diagram comparing the effects of mechanically peeled and manually peeled shrimp samples after being treated with pretreatment equipment in an embodiment of the present invention.

[0034] Fig. 9 Schematic diagram comparing the size of Antarctic krill in shell and the size of shrimp in an embodiment of the present invention.

[0035] The numbers in the figure are as follows:

[0036] 1. Frame, 11. Moving wheel, 2. Shelling mechanism, 21. First shell, 22. Shelling roller, 221. Shelling groove, 23. Half cage, 231. Bars, 24. Power device, 25. Electrostatic generator, 26. First feed port, 27. First discharge port, 3. Separation mechanism, 31. Second shell, 310. Second feed port, 311. Air supply channel, 312. Shrimp shell separation channel, 313. Shrimp meat separation channel, 314. Screen, 32. Fan, 33. Shrimp shell collection box, 4. Defluorination and preservation mechanism, 41. Shading shell, 42. Conveyor belt, 43. Spraying device, 44. Lighting device. [Specific implementation method]

[0037] The following will be combined with the attached Figure 1-9 The technical scheme of the present invention is clearly and completely described in detail with specific embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer of the reagents or instruments is not specified, they are all conventional products that can be purchased commercially.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] See also Figure 1-6 The present invention relates to a ship-based high-quality Antarctic krill pretreatment device, the pretreatment device comprises a frame 1, a shelling mechanism 2, a separation mechanism 3 and a defluorination and fresh-keeping mechanism 4, the shelling mechanism 2 and the separation mechanism 3 are both arranged on the frame 1, the shelling mechanism 2 is located above the separation mechanism 3, and the defluorination and fresh-keeping mechanism 4 is arranged at the rear end of the separation mechanism;

[0041] The shelling mechanism 2 includes a first shell 21, a shelling roller 22, a half-grid cage 23, a power device 24 and an electrostatic generator 25. The first shell 21 is provided with a first feed port 26 on the top and a first discharge port 27 on the bottom. The shelling roller 22 is rotatably arranged inside the first shell 21, and the shelling roller 22 is provided with rotational power by the power device 24. The half-grid cage 23 is arranged at the lower end of the first shell 21, and the half-grid cage 23 is semicircular and includes a plurality of grid bars 231 arranged at intervals. The half-grid cage 23 is located below the shelling roller 22 and is used in conjunction with the shelling roller 22. The electrostatic generator 25 is arranged on both sides of the first discharge port 27. The shelling is performed by the extrusion force and impact force generated by the relative rotation between the shelling roller 22 and the half-grid cage 23, so that the Antarctic krill are initially separated.

[0042] The separation mechanism 3 includes a second shell 31, a fan 32 and a shrimp shell collection box 33. A second feed port 310 is provided in the middle of the second shell 31, and the second feed port 310 is located directly below the first discharge port 27; an air supply channel 311 is provided at the rear end of the second shell 31, and the rear end of the air supply channel 311 is connected to the fan 32; a shrimp shell separation channel 312 is provided at the front end of the second shell 31, and a shrimp meat separation channel 313 is provided at the lower end of the second shell 31; the shrimp shell collection box 33 is located at the outlet of the shrimp shell separation channel 312; the second feed port 310 is located between the air supply channel 311 and the shrimp shell separation channel 312, and the shrimp meat separation channel 313 is located below the second feed port 310; and the shrimp shell separation channel 312 is arranged obliquely upward, and the shrimp meat separation channel 313 is arranged obliquely downward; a screen 314 is provided on the shrimp meat separation channel 313;

[0043] The defluorination and fresh-keeping mechanism 4 comprises a light-shielding shell 41, a conveyor belt 42, a spray device 43, and a lighting device 44. One end of the conveyor belt 42 is located below the outlet of the shrimp separation channel 313. The conveyor belt 42 passes through the middle of the light-shielding shell 41. A spray device 43 is provided at the upper end of the light-shielding shell 41. The spray device 43 sprays a defluorination and fresh-keeping agent downward onto the shrimp. The defluorination and fresh-keeping agent is acidic electrolyzed water containing curcumin, and the content of the curcumin is 45-55uM. The lighting device 44 is arranged inside the light-shielding shell 41 and above the conveyor belt 42. The wavelength of the light source of the lighting device 44 is 420-480nm.

[0044] The conveyor belt 42 stays for 25-60 seconds when passing through the light source area in the light-shielding housing 41, so that the light source can fully illuminate the shrimps sprayed with the defluorination preservative.

[0045] In a specific implementation, a preferred embodiment is: the output voltage of the electrostatic generator 25 is 1-1.8KV; the electrostatic generator 25 is composed of two symmetrically placed low-voltage electrostatic plates of 1-1.8kv. After the first shelling, the shrimp enters the electrostatic generating area of ​​the electrostatic generator 25, and the fine shell debris adhering to the shrimp is separated from the shrimp meat for a second time due to the electrostatic repulsion.

[0046] In a specific implementation, a preferred embodiment is as follows: the outer surface of the shelling roller 22 is provided with a plurality of shelling grooves 221 , and each of the shelling grooves 221 is perpendicular to the rotation direction of the shelling roller 22 .

[0047] In a specific implementation, a preferred embodiment is as follows: the rotation speed of the shelling roller 22 is 2-4 m / s; the spacing between the bars 231 of the half cage 23 is 5-6 mm. The impact force generated by the shelling roller 22 reaching a speed of 2-4 m / s can just break the Antarctic krill shell without destroying the integrity of the Antarctic krill meat, wherein the spacing between the bars 231 is 5-6 mm, and such a gap size is just enough to allow the Antarctic krill meat that has been shelled to pass through, while the Antarctic krill that has not been shelled can not pass through. The Antarctic krill that has not been broken continues to be shelled multiple times in the half cage 23 until its shell is broken.

[0048] In a specific implementation, a preferred embodiment is as follows: the screen 314 is a hollow groove with a width of 1 mm; the shrimp shells entering the shrimp separation channel 313 can be screened out.

[0049] In a specific implementation, a preferred embodiment is as follows: the angle of inclination between the shrimp shell separation channel 312 and the shrimp meat separation channel 313 and the horizontal plane is 30-45°, which can better separate the shrimp shells and shrimp meat.

[0050] In a specific implementation, a preferred embodiment is as follows: the wind speed of the fan 32 is set to 2-2.5 m / s; at this wind speed, the Antarctic krill meat with heavier mass will not be blown away by the airflow, but will directly fall into the shrimp meat separation channel 313 below, while the shrimp shells with lighter mass will be brought to the shrimp shell collection box 33 by the airflow generated by the fan 32 along the shrimp shell separation channel 312, thereby completing the separation and collection of Antarctic krill shrimp shells and meat.

[0051] In a specific implementation, a preferred embodiment is as follows: the amount of curcumin added to the defluorination preservative is 50uM, the pH value of the acidic electrolyzed water is 5.0-6.0, and the effective chlorine concentration is 10-20ppm; the wavelength of the light source of the lighting device 44 is 425nm; the conveyor belt 42 stays for 20-30s when passing through the light source area in the shading shell 41 to allow the light source to fully irradiate; the lighting device 44 is waterproof; the lighting device 4 is fixed inside the shading shell 41 by magnetic attraction.

[0052] In a specific implementation, a preferred embodiment is as follows: the first shell 21 includes an upper shell 211 and a lower shell 212, and the upper shell 211 and the lower shell 212 are detachably connected by bolts to facilitate internal cleaning.

[0053] In a specific implementation, a preferred embodiment is as follows: a moving wheel 11 is arranged below the frame 1, and a limiting device is arranged on the moving wheel 11, so as to facilitate the movement and fixation of the frame 1, the shelling mechanism 2 and the separation mechanism 3.

[0054] In another specific implementation of the present invention, the specific working process of the ship-based high-quality Antarctic krill pretreatment equipment is as follows:

[0055] Feed the Antarctic krill from the first feed port 26 of the shelling mechanism, the shelling roller 22 rotates at a speed of 4m / s, and the Antarctic krill is shelled by the extrusion force and impact force generated by the relative rotation between the shelling roller 22 and the half-grid cage 23, so as to achieve the initial separation (the inner diameter of the half-grid cage 3 is φ300mm, the grid bar 231 is a long round bar with a cross-sectional diameter of φ5, a length of 450mm, and a spacing of 5-6mm between the grid bars);

[0056] The separated shrimp shells and shrimp meat fall from the gaps between the grid bars 231, and then enter the static electricity (1.8 kV) generating area of ​​the static electricity generator 25 from the first discharge port 27. Due to the electrostatic repulsion, the tiny debris shells adhering to the shrimp meat are separated from the shrimp meat for a second time.

[0057] After the secondary separation, the shrimp shells and shrimp meat enter the separation mechanism 3. At a wind speed of 2 m / s of the fan 32, the shrimp shells with lighter weight are carried to the shrimp shell collection box 33 along the shrimp shell separation channel 312 by the airflow generated by the fan 32, and the Antarctic krill meat with heavier weight directly falls into the shrimp meat separation channel 313 below; a small amount of shrimp shells are separated by the screen 314 and fall into the conveyor belt 42;

[0058] The conveyor belt conveys the shrimp into the light-shielding housing 41, and the spray device 44 above sprays the shrimp with acidic electrolyzed water containing curcumin (wherein the curcumin addition amount is 50uM, the pH value of the acidic electrolyzed water is 6.0, and the effective chlorine concentration is 20ppm), and stays for 30s. The light source with a wavelength of 425nm emitted by the lighting device 44 is used to stimulate the activity of curcumin in the acidic electrolyzed water. Curcumin forms a strong and stable complex with fluoride ions in fluoride, which significantly reduces the concentration of free fluoride ions in Antarctic krill. At the same time, the light-activated curcumin produces active oxygen, which destroys microbial cell membranes, DNA, and proteins, inhibits the growth of microorganisms, and can significantly inhibit the activity of peroxidase, thereby increasing the antioxidant activity of the shrimp, and playing a role in reducing fluoride and preserving freshness.

[0059] The comparison results of the Antarctic krill shrimps peeled mechanically and manually in the above embodiment are as follows: Figure 7The figure is a comparative diagram of the loss rate (a), TVB-N (b), MDA (c), fluorine content (d), total colony count (e), and shelling integrity (f) of manual shelling and mechanical shelling. It can be seen from the figure that the loss rate, TVB-N value, MDA value, and total colony count of Antarctic krill shelled by this ship-based high-quality Antarctic krill pretreatment equipment (9.08±0.30%, 10.71±0.97mg / 100g, 0.11±0.01mg / 100g, 2.69±0.13logCFU / g) are significantly lower than those of shrimp shelled by manual shelling (15.49±0.64%, 17.03±0.47mg / 100g, 0.18±0.01mg / 100g, 3.73±0.19l ogCFU / g), it can be seen that the degree of lipid oxidation of Antarctic krill peeled by this equipment is reduced, and the dehydrogenation and decarboxylation capabilities of non-protein nitrogenous substances are reduced, thereby reducing the degree of damage to the protein structure, the microbial reproduction rate is also reduced, and the loss rate is reduced; the fluorine content of the shrimp peeled by this equipment (369.50±9.05mg / L) is significantly lower than that of manual shelling (440.70±7.26mg / L) because the acidic electrolyzed water stimulates curcumin to form a strong and stable complex with the fluoride ions in fluoride under light, which significantly reduces the concentration of free fluoride ions in Antarctic krill. Figure f also shows that the integrity of the shelling by the equipment (85.88±0.35%) is also significantly higher than that of the manual shelling (72.55±0.57%). Figure 8 This is a schematic diagram comparing the effects of mechanical shelling and manual shelling after pretreatment in the present invention. It can be seen from the figure that the Antarctic krill shelled by this ship-based high-quality Antarctic krill pretreatment equipment is fresher in quality, and the degree of oxidation and damage is significantly reduced. Fig. 9 The figure is a schematic diagram comparing the size of the Antarctic krill with shell and the size of the shrimp. The data shows that the width of the Antarctic krill with shell is about 7.12±0.26mm, and the width of the Antarctic krill after shelling is about 4.76±0.75mm. Therefore, setting the width of the half cage to 5-6mm can better allow the shrimp to pass through after shelling.

[0060] In summary, the present invention realizes the full-automatic shelling of Antarctic krill by utilizing the electrostatic repulsion effect generated by a low-voltage electrostatic field for secondary shelling, and uses light to stimulate curcumin in acidic electrolyzed water as a preservative and a fluorine-reducing agent, thereby realizing a fully automatic high-quality Antarctic krill ship-based pretreatment technology integrating shelling and preservation. The invention utilizes trace curcumin in an acidic electrolyzed water environment and under a wavelength of 425nm illumination condition, curcumin and fluoride ions in fluoride form a strong and stable complex, significantly reducing the concentration of free fluoride ions in Antarctic krill, and at the same time, the light-activated curcumin generates active oxygen, destroys microbial cell membranes, DNA, and proteins, inhibits the growth of microorganisms, and can significantly inhibit the activity of peroxidase, increase the antioxidant activity of shrimp, and play a role in reducing fluoride and preserving. The ship-based high-quality Antarctic krill pretreatment equipment of the invention mainly comprises a shelling mechanism, a separation mechanism, and a fluorine removal and preservation mechanism. The invention has a simple and compact structural design, a small volume, and can reduce the floor space. At the same time, in combination with spraying acidic electrolyzed water containing curcumin and 425nm illumination conditions, not only the shelling efficiency is effectively improved, but also the shelled shrimp has high quality, good preservation effect, and low fluorine content.

[0061] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A high-quality Antarctic krill pretreatment equipment for ships, characterized by: The pretreatment equipment comprises a frame, a shelling mechanism, a separation mechanism and a defluorination and fresh-keeping mechanism, wherein the shelling mechanism and the separation mechanism are both arranged on the frame, the shelling mechanism is located above the separation mechanism, and the defluorination and fresh-keeping mechanism is arranged at the rear end of the separation mechanism; The shelling mechanism includes a first shell, a shelling roller, a half-grid cage, a power device and an electrostatic generator. The first shell is provided with a first feed port on the top and a first discharge port on the bottom. The shelling roller is rotatably arranged inside the first shell, and the shelling roller is provided with rotational power by the power device. The half-grid cage is arranged at the lower end of the first shell, and the half-grid cage is semicircular and includes a plurality of grid bars arranged at intervals. The half-grid cage is located below the shelling roller and is used in conjunction with the shelling roller. The electrostatic generator is arranged on both sides of the first discharge port. The separation mechanism includes a second shell, a fan and a shrimp shell collection box, a second feed port is provided in the middle of the second shell, and the second feed port is located directly below the first discharge port; an air supply channel is provided at the rear end of the second shell, and the rear end of the air supply channel is connected to the fan; a shrimp shell separation channel is provided at the front end of the second shell, and a shrimp meat separation channel is provided at the lower end of the second shell; the shrimp shell collection box is located at the outlet of the shrimp shell separation channel; the second feed port is located between the air supply channel and the shrimp shell separation channel, and the shrimp meat separation channel is located below the second feed port; and the shrimp shell separation channel is arranged obliquely upward, and the shrimp meat separation channel is arranged obliquely downward; a screen is provided on the shrimp meat separation channel; The defluorination and fresh-keeping mechanism comprises a light-shielding shell, a conveyor belt, a spray device, and a lighting device. One end of the conveyor belt is located below the outlet of the shrimp separation channel, and the transmission belt passes through the middle of the light-shielding shell. The upper end of the light-shielding shell is provided with a spray device, and the spray device sprays a defluorination and fresh-keeping agent downward onto the shrimp. The defluorination and fresh-keeping agent is acidic electrolyzed water containing curcumin, and the content of the curcumin is 45-55uM. The lighting device is arranged inside the light-shielding shell and above the conveyor belt. The wavelength of the light source of the lighting device is 420-480nm. The conveyor belt stays for 25-60 seconds when passing through the light source area in the light-shielding housing, so that the light source fully illuminates the shrimps sprayed with the defluorination preservative.

2. The high-quality Antarctic krill pretreatment equipment for ships according to claim 1, characterized in that: The output voltage of the electrostatic generator is 1-1.8KV.

3. The high-quality Antarctic krill pretreatment equipment for ships according to claim 1, characterized in that: The outer surface of the shelling roller is provided with a plurality of shelling grooves, and each of the shelling grooves is perpendicular to the rotation direction of the shelling roller.

4. The high-quality Antarctic krill pretreatment equipment for ships according to claim 1, characterized in that: The rotation speed of the shelling roller is 2-4m / s.

5. The high-quality Antarctic krill pretreatment equipment for ships according to claim 1, characterized in that: The intervals between the bars of the half-cage are 5-6 mm; the screen is a hollow groove with a width of 1 mm.

6. The high-quality Antarctic krill pretreatment equipment for ships according to claim 1, characterized in that: The inclination angles of the shrimp shell separation channel and the shrimp meat separation channel to the horizontal plane are 30-45°.

7. The high-quality Antarctic krill pretreatment equipment for ships according to claim 1, characterized in that: The wind speed of the fan is set to 2-2.5m / s.

8. The high-quality Antarctic krill pretreatment equipment for ships according to claim 1, characterized in that: The amount of curcumin added to the defluorination preservative is 50uM, the pH value of the acidic electrolyzed water is 5.0-6.0, and the effective chlorine concentration is 10-20ppm; the wavelength of the light source of the lighting device is 425nm; the conveyor belt stays for 20-30s when passing through the light source area in the light-shielding housing to allow the light source to fully irradiate; The lighting device is waterproof and is fixed inside the light-shielding housing by magnetic attraction.

9. The high-quality Antarctic krill pretreatment equipment for ships according to claim 1, characterized in that: The first shell includes an upper shell and a lower shell, and the upper shell and the lower shell are detachably connected by bolts.

10. The high-quality Antarctic krill pretreatment equipment for ships according to claim 1, characterized in that: A moving wheel is arranged below the frame, and a limiting device is arranged on the moving wheel.

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