Device for separating shrimp shells from shrimp meal

Abstract

The invention relates to shrimp shell separation equipment in shrimp meal, which comprises an equipment main body, a separation cavity for separating shrimp shells from shrimp meat is arranged in the equipment main body, a separation mechanism is arranged in the separation cavity, and the separation cavity is divided into a first cavity and a second cavity by the separation mechanism; a water flow inlet communicated with the separation cavity is formed in one end of the equipment main body, a shrimp meat outlet and a shrimp shell outlet are formed in the other end of the equipment main body, the shrimp meat outlet is communicated with the first cavity, the shrimp shell outlet is communicated with the second cavity, and a feeding mechanism is arranged above the end, close to the water flow inlet, of the equipment main body. The device is simple in structure, can well separate shrimp shells from shrimp meal, and has the advantages of being low in cost, natural, green and free of additives.

Description

Technical Field

[0001] The invention relates to the technical field of krill processing, in particular to a device for separating shrimp shells from shrimp powder. Background Art

[0003] At present, the Antarctic krill industry catches krill and makes whole krill meal. After extracting krill oil from it, the remaining defatted krill meal is mainly used as a feed additive. This not only has low economic value, but also the value of krill's high-quality protein is not fully utilized. Therefore, it is very valuable to extract protein powder that can be directly eaten by humans from defatted meal.

[0004] Antarctic krill is rich in functional oils and high-quality protein, but it also contains a high concentration of fluorine, which is mainly concentrated in the shrimp shell. Although the national standard no longer has mandatory restrictions on the fluorine content in food, for raw materials that Chinese people have never eaten, if defatted shrimp powder is consumed directly, there is a risk of excessive fluorine intake, which can cause a series of health problems such as bone deformities. Therefore, krill protein powder for human consumption needs to be separated from the shrimp shell to reduce the fluorine content.

[0005] Krill shells are thin and fragile after drying. After the preparation of shrimp powder on board, extraction of shrimp oil, desolventization and drying, most shrimp shells have been crushed into fine particles, and the shrimp meat and shells are mixed together in the defatted powder. At present, the equipment that can be used to separate krill shells and meat is mainly for undehydrated krill raw materials, and there is no equipment that can be used to separate shrimp shells from shrimp powder. In addition, the particle size of shrimp shells and shrimp meat in defatted powder is similar, and the density difference is not large enough, so traditional methods such as air separation are difficult to effectively separate.

[0006] Among the existing technologies, the technologies that can be used to prepare low-fluorine krill protein powder are mainly alkali dissolution and acid precipitation methods (CN201910833418.3, a method for extracting Antarctic krill protein) and enzymatic hydrolysis methods (CN201210029946.1, a method for preparing low-fluorine Antarctic krill hydrolyzed protein powder), which are to prepare protein powder with low fluorine content and high protein content by first dissolving the protein component in water and then separating the shrimp powder from the shrimp meat by solid-liquid separation. The alkali dissolution and acid precipitation method requires a large amount of water and acid-base to adjust the pH value, thereby producing a large amount of saline wastewater, which is costly and has a large amount of wastewater discharge; the enzymatic hydrolysis method requires the use of high-priced enzyme preparations, and requires a long time of heat preservation and enzymatic hydrolysis, and the process has high energy consumption, resulting in high production costs. Summary of the invention

[0007] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a shrimp shell separation device in shrimp powder, which has a simple structure, can well separate the shrimp shells in shrimp powder, and has the advantages of low cost, natural green and no additives.

[0008] The above-mentioned object of the present invention is achieved through the following technical solutions:

[0009] A device for separating shrimp shells from shrimp powder comprises a device main body, wherein a separation cavity for separating shrimp shells from shrimp meat is provided in the device main body, a separation mechanism is installed in the separation cavity, and the separation mechanism divides the separation cavity into a first cavity and a second cavity, a water inlet connected to the separation cavity is provided at one end of the device main body, and a shrimp meat outlet and a shrimp shell outlet are provided at the other end, the shrimp meat outlet is connected to the first cavity, and the shrimp shell outlet is connected to the second cavity, and a feeding mechanism is provided above one end of the device main body close to the water inlet.

[0010] As a further technical solution of the present invention: the equipment body comprises a water inlet pipe, a box body, a first water outlet pipe and a second water outlet pipe, the water inlet is arranged at one end of the water inlet pipe, the other end of the water inlet pipe is connected to the box body, and one end of the first water outlet pipe and one end of the second water outlet pipe are respectively connected to one end of the box body away from the water inlet pipe;

[0011] The first cavity is communicated with the interior of the first water outlet pipe, the second cavity is communicated with the interior of the second water outlet pipe, the shrimp meat outlet is arranged at one end of the first water outlet pipe, and the shrimp shell outlet is arranged at one end of the second water outlet pipe.

[0012] As a further technical solution of the present invention: the separation mechanism includes a partition plate assembly and a lifting mechanism, the partition plate assembly is arranged between the first cavity and the second cavity, and the lifting mechanism is used to drive the partition plate assembly to move up and down in the separation cavity.

[0013] As a further technical solution of the present invention: the partition plate assembly includes a sliding plate, a lifting plate and a connecting part, one end of the connecting part is fixedly connected to the connection between the first water outlet pipe and the second water outlet pipe, and the other end is connected to the lifting plate, and a lifting mechanism is installed in the equipment body, and the lifting mechanism is transmission-connected to the lifting plate, and the lifting mechanism is used to drive the lifting plate to move up and down in the separation chamber.

[0014] As a further technical solution of the present invention: the lifting mechanism includes multiple screws, which are symmetrically distributed on both sides of the separation chamber and threadedly connected to the lifting plate. The multiple screws are driven by a motor to rotate simultaneously so that the lifting plate moves up and down in the separation chamber.

[0015] As a further technical solution of the present invention: two support plates are integrally formed and fixedly connected on both sides of one end of the lifting plate away from the connecting part, and the sliding plate is overlapped on top of the two support plates, and can not only move left and right, but also move up and down with the lifting plate.

[0016] As a further technical solution of the present invention: the feeding mechanism includes a feeding hopper and a screw conveyor connected to the feeding hopper, the feeding hopper is installed above the side of the box body close to the water inlet pipe, the feeding hopper is inclined toward the direction close to the water inlet pipe, and a feeding port is opened on the screw conveyor.

[0017] As a further technical solution of the present invention: a vibrator is installed at the bottom of the feeding hopper.

[0018] As a further technical solution of the present invention: the water inlet pipe, the first water outlet pipe and the second water outlet pipe are in a prism shape, and the box body is in a rectangular parallelepiped shape.

[0019] As a further technical solution of the present invention: an antibacterial device is installed at the bottom of the separation cavity in the box.

[0020] In summary, the present invention includes at least one of the following beneficial technical effects:

[0021] 1. The present invention discloses a shrimp shell separation device in shrimp powder. When the device is working, water is introduced into the water inlet through a water pump, and the water flows into the separation chamber through the water inlet pipe, forming a horizontal water flow in the separation chamber in a horizontal flow state, and forming two water flows in the first cavity and the second cavity at the tail end of the box body. At this time, the shrimp powder is put into the feed port of the screw conveyor, and the shrimp powder falls into the separation chamber through the feed hopper. The vibration device on the feed hopper can make the shrimp powder fall into the separation equipment body more evenly. After falling into the separation chamber, the shrimp meat absorbs water quickly and settles at a faster speed, and is located in the lower half of the separation chamber. The shrimp shell absorbs water slowly and settles slower than the shrimp meat, so it is distributed in the upper half of the separation chamber. With the continuous flow of water, the shrimp meat will enter the first outlet pipe from the first cavity at the bottom and flow out from the shrimp meat outlet, and the shrimp shell will enter the second outlet pipe from the second cavity at the top and flow out from the shrimp shell outlet. The equipment outlet is divided into two water streams. The solids in them are separated to obtain the shrimp shell and shrimp meat components respectively. The separated water can be re-introduced into the water inlet through a pump for repeated use.

[0022] 2. Compared with the prior art, the present invention provides a set of equipment that can be used to separate shrimp shells and shrimp meat in defatted shrimp powder, filling the gap in the lack of physical technology for separating shrimp shells in China. The separation of shrimp shells and proteins can be achieved without the need to dissolve the proteins in water through enzymatic hydrolysis or pH value, thereby eliminating the disadvantages of large amounts of wastewater and high costs. The equipment is simple to operate, low in cost, and naturally green and additive-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a side view of the present invention.

[0025] Figure 3 It is a schematic structural diagram of state 1 of the present invention (sliding plate omitted).

[0026] Figure 4 It is a structural schematic diagram of state 2 of the present invention (sliding plate omitted).

[0027] Figure 5 It is a structural schematic diagram of state three of the present invention (sliding plate omitted).

[0028] Figure numerals: 1. Equipment body; 11. Water inlet pipe; 12. Box body; 121. Antibacterial device; 13. First water outlet pipe; 14. Second water outlet pipe; 2. Separation chamber; 3. Separation mechanism; 31. Sliding plate; 32. Lifting plate; 33. Connecting part; 34. Screw; 35. Support plate; 4. First chamber; 5. Second chamber; 6. Water inlet; 7. Shrimp meat outlet; 8. Shrimp shell outlet; 9. Feeding mechanism; 91. Feeding hopper; 911. Vibrator; 92. Screw conveyor; 93. Feeding port. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 this application can be understood according to specific circumstances.

[0032] Embodiment 1:

[0033] Reference Figure 1 The present invention discloses a shrimp shell separation device in shrimp powder, comprising a device body 1, a separation cavity 2 for separating shrimp shells and shrimp meat is provided in the device body 1, a separation mechanism 3 is installed in the separation cavity 2, and the separation mechanism 3 separates the separation cavity 2 into a first cavity 4 and a second cavity 5 (see Figure 2 ), a water inlet 6 connected to the separation chamber 2 is provided at one end of the equipment body 1, and a shrimp meat outlet 7 and a shrimp shell outlet 8 are provided at the other end, the shrimp meat outlet 7 is connected to the first chamber 4, and the shrimp shell outlet 8 is connected to the second chamber 5, and a feeding mechanism 9 is arranged above the end of the equipment body 1 close to the water inlet 6.

[0034] The principle of the present invention is based on the fact that the sedimentation speed of particles in water depends on their own density and particle size. Specifically, in this case, shrimp meat particles of the same particle size settle faster than shrimp shells. On this basis, the water flow is used to give a lateral displacement in the horizontal direction, thereby achieving the separation of shrimp shells and shrimp meat in the longitudinal space, and can be operated continuously. The efficiency of shrimp shell separation depends on the optimization of four factors: shrimp powder particle size, water flow speed, lateral displacement size, and water depth at the collection location.

[0035] The equipment body 1 includes a water inlet pipe 11, a box body 12, a first water outlet pipe 13 and a second water outlet pipe 14. The water inlet 6 is arranged at one end of the water inlet pipe 11, and the other end of the water inlet pipe 11 is connected to the box body 12. One end of the first water outlet pipe 13 and one end of the second water outlet pipe 14 are respectively connected to one end of the box body 12 away from the water inlet pipe 11; the first cavity 4 is connected to the interior of the first water outlet pipe 13, and the second cavity 5 is connected to the interior of the second water outlet pipe 14. The shrimp meat outlet 7 is arranged at one end of the first water outlet pipe 13, and the shrimp shell outlet 8 is arranged at one end of the second water outlet pipe 14.

[0036] The separation mechanism 3 includes a partition plate assembly and a lifting mechanism. The partition plate assembly is arranged between the first cavity 4 and the second cavity 5. The lifting mechanism is used to drive the partition plate assembly to move up and down in the separation cavity 2. Among them, the partition plate assembly includes a sliding plate 31, a lifting plate 32 and a connecting portion 33. One end of the connecting portion 33 is fixedly connected to the connection between the first water outlet pipe 13 and the second water outlet pipe 14, and the other end is connected to the lifting plate 32. A lifting mechanism is installed in the equipment body 1. The lifting mechanism is transmission-connected to the lifting plate 32. The lifting mechanism is used to drive the lifting plate 32 to move up and down in the separation cavity 2. In this embodiment, the connecting portion 33 is a soft rubber plate, which is elastic. One end of the rubber plate is connected to the connection between the first water outlet pipe 13 and the second water outlet pipe 14, and the other end is connected to the lifting plate 32. The length of the soft rubber plate can enable the lifting plate 32 to move up and down. Refer to Figure 3-Figure 5 The lifting plate 32 can move up and down in the separation chamber 2, so as to adjust the spatial ratio of the first chamber 4 and the second chamber 5, so as to adjust the size of the separation chamber 2 according to the water depth.

[0037] The lifting mechanism includes a plurality of screws 34, which are symmetrically distributed on both sides of the separation chamber 2 and threadedly connected to the lifting plate 32. The plurality of screws 34 are driven by a motor to rotate simultaneously so that the lifting plate 32 moves up and down in the separation chamber 2. Two support plates 35 are integrally formed and fixedly connected to both sides of one end of the lifting plate 32 away from the connecting portion 33. The sliding plate 31 is overlapped on the top of the two support plates 35, and can not only move left and right, but also move up and down with the lifting plate 32.

[0038] In this embodiment, the lifting plate 32 can move up and down, so that the size of the materials can be separated according to the needs, the size of the first cavity 4 and the second cavity 5 can be adjusted, and the water depth of the collection position can be adjusted, which further improves the practicality. The sliding plate 31 can not only move up and down with the lifting plate 32, but also move left and right toward the water inlet 6, so that the separation path and separation time of the shrimp shell and the shrimp meat can be adjusted, which greatly improves the effect of shrimp meat separation.

[0039] The feeding mechanism 9 includes a feeding hopper 91 and a screw conveyor 92 connected to the feeding hopper 91. The feeding hopper 91 is installed above the side of the box 12 close to the water inlet pipe 11. The feeding hopper 91 is tilted toward the direction close to the water inlet pipe 11. A feeding port 93 is provided on the screw conveyor 92. A vibrator 911 is installed at the bottom of the feeding hopper 91. Among them, the feeding hopper 91 is not directly hard-connected with the equipment body 1, but a soft connection is adopted, and there is a vibrator 911 to ensure that the material can fall into the separation equipment body 1 more evenly.

[0040] The water inlet pipe 11, the first water outlet pipe 13 and the second water outlet pipe 14 are in a prism shape, and the box body 12 is in a rectangular parallelepiped shape. In this embodiment, one side of the device body 1 is a prism-shaped water inlet pipe 11, the purpose of which is to provide a horizontal water flow with controllable speed and in a horizontal state for the device body 1; the next is a rectangular box body 12, which provides a space for the shrimp powder components to be dispersed; the separation mechanism 3 in the box body 12 can move left and right to adjust the lateral displacement, and can move up and down to adjust the water depth of the collection position. On the longitudinal section, the separation mechanism 3 divides the box body 12 into upper and lower parts.

[0041] An antibacterial device 121 is installed at the bottom of the separation chamber 2 in the box 12. In this embodiment, the antibacterial device 121 can be a refrigeration device or a non-destructive antibacterial device 121 such as a blue light, the purpose of which is to ensure that microorganisms in the device do not proliferate, the shrimp powder does not become corrupt, and the water therein can be reused. The device outlet is divided into two streams of water, and the solids therein are separated to obtain the shrimp shell and shrimp meat components respectively. The separated water can be re-introduced into the water inlet 6 for reuse through a pump.

[0042] Embodiment 2:

[0043] A shrimp shell separation device in shrimp powder is different from the first embodiment in that the connection part 33 is a waterproof isolation cloth, which has a smaller force to resist movement, one end of the waterproof isolation cloth is connected to the connection between the first water outlet pipe 13 and the second water outlet pipe 14, and the other end is connected to the lifting plate 32. The waterproof isolation cloth has a certain length so that the lifting plate 32 can move up and down.

[0044] The implementation principle of the present invention is as follows: the present invention discloses a shrimp shell separation device in shrimp powder, when it is working, water is introduced into the water inlet 6 through a water pump, and the water flows into the separation cavity 2 through the water inlet pipe 11, forming a horizontal water flow in a horizontal flow state in the separation cavity 2, and forming two streams of water in the first cavity 4 and the second cavity 5 at the tail end of the box 12. At this time, the shrimp powder is put into the feed port 93 of the screw conveyor 92, and the shrimp powder falls into the separation cavity 2 through the feed hopper 91. The vibration device on the feed hopper 91 can make the shrimp powder fall into the separation device body 1 more evenly. After falling into the separation chamber 2, the shrimp meat absorbs water quickly and settles at a faster speed, and is located in the lower half of the separation chamber 2. The shrimp shell absorbs water slowly and settles slower than the shrimp meat, so it is distributed in the upper half of the separation chamber 2. With the continuous flow of water, the shrimp meat will enter the first water outlet pipe 13 from the lower first chamber 4 and flow out from the shrimp meat outlet 7, and the shrimp shell will enter the second water outlet pipe 14 from the upper second chamber 5 and flow out from the shrimp shell outlet 8. The equipment outlet is divided into two water streams, and the solids therein are separated to obtain the shrimp shell and shrimp meat components respectively. The separated water can be reintroduced into the water inlet 6 through a pump for reuse.

[0045] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A shrimp shell separation device in shrimp powder, comprising a device body (1), characterized in that: The device body (1) is provided with a separation chamber (2) for separating shrimp shells from shrimp meat. A separation mechanism (3) is installed in the separation chamber (2). The separation mechanism (3) separates the separation chamber (2) into a first chamber (4) and a second chamber (5). One end of the device body (1) is provided with a water inlet (6) connected to the separation chamber (2), and the other end is provided with a shrimp meat outlet (7) and a shrimp shell outlet (8). The shrimp meat outlet (7) is connected to the first chamber (4), and the shrimp shell outlet (8) is connected to the second chamber (5). A feeding mechanism (9) is provided above one end of the device body (1) close to the water inlet (6).

2. The shrimp shell separation device in shrimp powder according to claim 1, characterized in that: The device body (1) comprises a water inlet pipe (11), a housing (12), a first water outlet pipe (13) and a second water outlet pipe (14); the water inlet (6) is arranged at one end of the water inlet pipe (11); the other end of the water inlet pipe (11) is connected to the housing (12); one end of the first water outlet pipe (13) and one end of the second water outlet pipe (14) are respectively connected to one end of the housing (12) away from the water inlet pipe (11); The first cavity (4) is in communication with the interior of the first water outlet pipe (13), the second cavity (5) is in communication with the interior of the second water outlet pipe (14), the shrimp meat outlet (7) is arranged at one end of the first water outlet pipe (13), and the shrimp shell outlet (8) is arranged at one end of the second water outlet pipe (14).

3. The shrimp shell separation device in shrimp powder according to claim 1, characterized in that: The separation mechanism (3) comprises a partition plate assembly and a lifting mechanism, wherein the partition plate assembly is arranged between the first cavity (4) and the second cavity (5), and the lifting mechanism is used to drive the partition plate assembly to move up and down in the separation cavity (2).

4. The shrimp shell separation device in shrimp powder according to claim 3, characterized in that: The partition plate assembly comprises a sliding plate (31), a lifting plate (32) and a connecting portion (33); one end of the connecting portion (33) is fixedly connected to the connection between the first water outlet pipe (13) and the second water outlet pipe (14), and the other end is connected to the lifting plate (32); a lifting mechanism is installed in the equipment body (1); the lifting mechanism is transmission-connected to the lifting plate (32); and the lifting mechanism is used to drive the lifting plate (32) to move up and down in the separation chamber (2).

5. The shrimp shell separation device in shrimp powder according to claim 4, characterized in that: The lifting mechanism comprises a plurality of screw rods (34), which are symmetrically distributed on both sides of the separation chamber (2) and are threadedly connected to the lifting plate (32). The plurality of screw rods (34) are driven by a motor to rotate simultaneously so that the lifting plate (32) moves up and down in the separation chamber (2).

6. The shrimp shell separation device in shrimp powder according to claim 4, characterized in that: Two support plates (35) are integrally formed and fixedly connected to the two sides of one end of the lifting plate (32) away from the connecting portion (33), and the sliding plate (31) is overlapped above the two support plates (35) and can not only move left and right, but also move up and down following the lifting plate (32).

7. The shrimp shell separation device in shrimp powder according to claim 2, characterized in that: The feeding mechanism (9) comprises a feeding hopper (91) and a screw conveyor (92) connected to the feeding hopper (91); the feeding hopper (91) is installed above the side of the box (12) close to the water inlet pipe (11); the feeding hopper (91) is inclined in a direction close to the water inlet pipe (11); and a feeding port (93) is provided on the screw conveyor (92).

8. The shrimp shell separation device in shrimp powder according to claim 1, characterized in that: A vibrator (911) is installed at the bottom of the feeding hopper (91).

9. The shrimp shell separation device in shrimp powder according to claim 1, characterized in that: The water inlet pipe (11), the first water outlet pipe (13) and the second water outlet pipe (14) are in the shape of a prism, and the box body (12) is in the shape of a rectangular parallelepiped.

10. The shrimp shell separation device in shrimp powder according to claim 1, characterized in that: An antibacterial device (121) is installed at the bottom of the separation chamber (2) in the box (12).

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