Device for separating shrimp shells from shrimp meal

Abstract

The utility model 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] This invention relates to the field of krill processing technology, and in particular to a device for separating shrimp shells from shrimp powder. Background Technology

[0002] Currently, in the Antarctic krill industry, after harvesting krill, it is processed into whole krill meal. After extracting krill oil, the remaining defatted krill meal is mainly used as a feed additive. This not only has low economic value, but also fails to fully utilize the high-quality protein value of krill. Therefore, the work of extracting protein powder from defatted krill meal that can be directly consumed by humans is very valuable.

[0003] Antarctic krill is rich in functional oils and high-quality protein, but it also contains a high concentration of fluoride, which is mainly concentrated in the shell. Although current national standards no longer mandate limits on fluoride content in food, consuming defatted krill powder directly from a raw material that is not commonly consumed by Chinese people poses a risk of excessive fluoride intake. Excessive fluoride intake can lead to a range of health problems, including skeletal deformities. Therefore, krill protein powder intended for human consumption needs to have its shell removed to reduce its fluoride content.

[0004] Krill shells are thin and brittle after drying. During the onboard preparation of krill powder, extraction of krill oil, and subsequent desolventizing and drying processes, most of the shells are pulverized into fine particles, resulting in a mixture of krill meat and shells in the defatted powder. Currently, equipment for separating krill shells and meat is mainly designed for undried krill raw materials; there is no equipment specifically for separating krill shells from krill powder. Furthermore, the particle size and density of krill shells and meat in defatted powder are similar, making effective separation difficult using traditional methods such as air separation.

[0005] Currently available technologies for preparing low-fluoride krill protein powder mainly include alkali dissolution and acid precipitation methods and enzymatic hydrolysis methods. These methods involve dissolving the protein components in water first, followed by solid-liquid separation to separate the shrimp powder from the shrimp meat, thus producing a protein powder with low fluoride and high protein content. The alkali dissolution and acid precipitation method requires large amounts of water and pH adjustments, resulting in significant amounts of saline wastewater, leading to high costs and large wastewater discharge. The enzymatic hydrolysis method requires expensive enzyme preparations and a long incubation period, resulting in high energy consumption and consequently high production costs. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a shrimp shell separation device for shrimp powder. This device has a simple structure, can effectively separate shrimp shells from shrimp powder, and has the advantages of low cost, natural and green additive-free production.

[0007] The above-mentioned objective of this invention is achieved through the following technical solutions:

[0008] A shrimp shell separation device for shrimp powder includes a main body with a separation chamber for separating shrimp shells and shrimp meat inside. A separation mechanism is installed in the separation chamber, which divides the separation chamber into a first chamber and a second chamber. One end of the main body has a water inlet communicating with the separation chamber, and the other end has a shrimp meat outlet and a shrimp shell outlet. The shrimp meat outlet communicates with the first chamber, and the shrimp shell outlet communicates with the second chamber. A feeding mechanism is provided above the end of the main body near the water inlet.

[0009] As a further technical solution of the present invention: the main body of the equipment includes a water inlet pipe, a box body, a first water outlet pipe and a second water outlet pipe, the water inlet is located 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 the end of the box body away from the water inlet pipe.

[0010] The first cavity is connected to the interior of the first water outlet pipe, the second cavity is connected to the interior of the second water outlet pipe, the shrimp meat outlet is located at one end of the first water outlet pipe, and the shrimp shell outlet is located at one end of the second water outlet pipe.

[0011] 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 disposed 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.

[0012] 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. A lifting mechanism is installed in the main body of the equipment. The lifting mechanism is connected to the lifting plate in a transmission manner. The lifting mechanism is used to drive the lifting plate to move up and down in the separation chamber.

[0013] As a further technical solution of the present invention: the lifting mechanism includes a plurality of screws, which are symmetrically distributed on both sides of the separation cavity and threadedly connected to the lifting plate. The plurality of screws are driven by a motor to rotate simultaneously so that the lifting plate moves up and down in the separation cavity.

[0014] As a further technical solution of the present invention: two support plates are integrally formed and fixedly connected on both sides of the end of the lifting plate away from the connecting part, and the sliding plate overlaps the two support plates, so that it can not only move left and right, but also move up and down with the lifting plate.

[0015] 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 near the water inlet pipe. The feeding hopper is inclined in the direction of the water inlet pipe. The screw conveyor has a feeding port.

[0016] As a further technical solution of the present invention: a vibrator is installed at the bottom of the feeding hopper.

[0017] As a further technical solution of the present invention: the inlet pipe, the first outlet pipe and the second outlet pipe are in the shape of a frustum, and the box body is in the shape of a cuboid.

[0018] As a further technical solution of the present invention: an antibacterial device is installed at the bottom of the separation chamber inside the box.

[0019] In summary, the present invention has at least one of the following beneficial technical effects:

[0020] 1. This invention discloses a shrimp shell separation device for shrimp powder. During operation, a water pump supplies water to the inlet, which flows through the inlet pipe into the separation chamber, forming a horizontal, horizontal flow within the chamber. Two separate water streams are formed in the first and second chambers at the tail end of the device. Shrimp powder is then fed into the feed inlet of a screw conveyor, falling into the separation chamber through the feed hopper. A vibration device on the feed hopper ensures the shrimp powder falls relatively evenly into the main body of the separation device. After falling into the separation chamber, the shrimp meat absorbs water and sinks to the bottom underwater. The shrimp shells, which do not absorb water, float on the surface. With the continuous flow of water, the shrimp meat enters the first outlet pipe from the bottom first chamber and flows out from the shrimp meat outlet. The shrimp shells enter the second outlet pipe from the top second chamber and flow out from the shrimp shell outlet. The equipment outlet is divided into two streams of water, separating the solids to obtain the shrimp shells and shrimp meat components. The separated water can be pumped back into the water inlet for reuse.

[0021] 2. Compared with the existing technology, 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 domestic lack of shrimp shell separation based on physical technology. The advantage is that it does not require enzymatic hydrolysis or pH value to dissolve the protein in water in order to separate the shrimp shell from the protein, thus avoiding the disadvantages of large amounts of wastewater and high costs. The equipment is simple to operate, low in cost, and naturally green with no additives. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 This is a side view of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the first state of the present invention (the sliding plate is omitted).

[0025] Figure 4 This is a schematic diagram of the structure of the second state of the present invention (the sliding plate is omitted).

[0026] Figure 5 This is a schematic diagram of the structure of the third state of the present invention (the sliding plate is omitted).

[0027] Reference numerals in the attached drawings: 1. Main body of the equipment; 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. Feed inlet. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Example 1:

[0032] Reference Figure 1 This invention discloses a shrimp shell separation device for shrimp powder, comprising a main body 1, a separation chamber 2 for separating shrimp shells and shrimp meat, and a separation mechanism 3 installed within the separation chamber 2. The separation mechanism 3 divides the separation chamber 2 into a first chamber 4 and a second chamber 5 (see...). Figure 2 The main body 1 of the equipment has a water inlet 6 that is connected to the separation chamber 2 at one end, and a shrimp meat outlet 7 and a shrimp shell outlet 8 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. A feeding mechanism 9 is provided above the end of the main body 1 near the water inlet 6.

[0033] The principle of this invention is based on the fact that the settling velocity of particles in water depends on their density and particle size. Specifically, in this case, shrimp meat particles of the same size settle faster than shrimp shells. Based on this, the water flow provides lateral displacement in the horizontal direction, thereby achieving separation of the shrimp shell and shrimp meat in the vertical space, and this process can be continuous. The efficiency of shrimp shell separation depends on the optimized combination of four factors: shrimp powder particle size, water flow velocity, lateral displacement, and water depth at the collection location.

[0034] The main body of the equipment 1 includes an inlet pipe 11, a housing 12, a first outlet pipe 13, and a second outlet pipe 14. A water inlet 6 is located at one end of the inlet pipe 11, and the other end of the inlet pipe 11 is connected to the housing 12. One end of the first outlet pipe 13 and one end of the second outlet pipe 14 are respectively connected to the ends of the housing 12 away from the inlet pipe 11. The first cavity 4 is connected to the interior of the first outlet pipe 13, and the second cavity 5 is connected to the interior of the second outlet pipe 14. The shrimp meat outlet 7 is located at one end of the first outlet pipe 13, and the shrimp shell outlet 8 is located at one end of the second outlet pipe 14.

[0035] The separation mechanism 3 includes a partition plate assembly and a lifting mechanism. The partition plate assembly is disposed 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 within the separation cavity 2. The partition plate assembly includes a sliding plate 31, a lifting plate 32, and a connecting part 33. One end of the connecting part 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 inside the main body 1, and the lifting mechanism is drively connected to the lifting plate 32. The lifting mechanism is used to drive the lifting plate 32 to move up and down within the separation cavity 2. In this embodiment, the connecting part 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 allows the lifting plate 32 to move up and down. (Refer to...) Figures 3-5The lifting plate 32 can move up and down within the separation chamber 2, thereby adjusting the spatial ratio between the first chamber 4 and the second chamber 5, which facilitates adjusting the size of the separation chamber 2 according to the water depth.

[0036] The lifting mechanism includes multiple screws 34, which are symmetrically distributed on both sides of the separation chamber 2 and threadedly connected to the lifting plate 32. A motor drives the multiple screws 34 to rotate simultaneously, causing the lifting plate 32 to move up and down within the separation chamber 2. Two support plates 35 are integrally formed and fixedly connected to both sides of the end of the lifting plate 32 away from the connecting part 33. A sliding plate 31 overlaps the two support plates 35, allowing it to move not only left and right but also up and down with the lifting plate 32.

[0037] In this embodiment, the lifting plate 32 can move up and down, thereby adjusting the size of the first cavity 4 and the second cavity 5 according to the required size of the materials to be separated, and adjusting the water depth at the collection position, further improving practicality. The sliding plate 31 can not only move up and down with the lifting plate 32, but also move left and right towards the water inlet 6, thereby adjusting the path and separation time of the shrimp shell and shrimp meat, greatly improving the shrimp meat separation effect.

[0038] 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 housing 12 on the side near the water inlet pipe 11, and is inclined towards the direction of the water inlet pipe 11. The screw conveyor 92 has a feed inlet 93, and a vibrator 911 is installed at the bottom of the feeding hopper 91. The feeding hopper 91 is not directly rigidly connected to the main body 1 of the equipment, but is connected flexibly, and has a vibrator 911 to ensure that the material can fall into the main body 1 of the separation equipment relatively evenly.

[0039] The inlet pipe 11, the first outlet pipe 13, and the second outlet pipe 14 are truncated pyramidal in shape, and the box body 12 is rectangular in shape. In this embodiment, the inlet pipe 11, which is truncated pyramidal in shape, is located on one side of the main body 1. Its purpose is to provide the main body 1 with a horizontal water flow that is controllable in speed and in a horizontal state. Next is the rectangular box body 12, which provides space for the shrimp powder components to disperse. The separation mechanism 3 inside the box body 12 can move left and right to adjust the horizontal displacement, and can move up and down to adjust the water depth at the collection position. On the longitudinal section, the separation mechanism 3 divides the box body 12 into upper and lower parts.

[0040] An antibacterial device 121 is installed at the bottom of the separation chamber 2 inside the housing 12. In this embodiment, the antibacterial device 121 can be a refrigeration device or a non-destructive antibacterial device such as blue light. The purpose is to ensure that microorganisms do not proliferate inside the equipment and that the shrimp powder does not spoil. The water in the equipment can be reused. The equipment outlet is divided into two water streams. By separating the solids, shrimp shells and shrimp meat components can be obtained separately. The separated water can be pumped back into the water inlet 6 for reuse.

[0041] Example 2:

[0042] A shrimp shell separation device for shrimp powder differs from Embodiment 1 in that the connecting part 33 is a waterproof isolation cloth. The waterproof isolation cloth has less resistance to movement forces. 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, allowing the lifting plate 32 to move up and down.

[0043] The implementation principle of this invention is as follows: This invention discloses a shrimp shell separation device for shrimp powder. During operation, water is pumped into the water inlet 6 and flows through the inlet pipe 11 into the separation chamber 2, forming a horizontal water flow in a horizontal state within the separation chamber 2. Two water flows are formed in the first chamber 4 and the second chamber 5 at the tail end of the housing 12, respectively. At this time, shrimp powder is fed into the feed inlet 93 of the screw conveyor 92. The shrimp powder falls into the separation chamber 2 through the feed hopper 91. The vibration device on the feed hopper 91 ensures that the shrimp powder falls relatively evenly into the main body 1 of the separation device. After falling into the separation chamber 2, the shrimp meat absorbs water and sinks to the bottom of the separation chamber 2 underwater. The shrimp shells, which do not absorb water, float on the surface. With the continuous flow of water, the shrimp meat enters the first outlet pipe 13 from the first chamber 4 at the bottom and flows out from the shrimp meat outlet 7. The shrimp shells enter the second outlet pipe 14 from the second chamber 5 at the top and flow out from the shrimp shell outlet 8. The equipment outlet is divided into two water streams, separating the solids to obtain the shrimp shells and shrimp meat components respectively. The separated water can be pumped back into the water inlet 6 for reuse.

[0044] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

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

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

3. The shrimp shell separation device in shrimp powder according to claim 2, characterized in that, The separation mechanism (3) includes a partition plate assembly and a lifting mechanism. The partition plate assembly is disposed 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 within the separation cavity (2).

4. The shrimp shell separation device in shrimp powder according to claim 3, characterized in that, The partition plate assembly includes a sliding plate (31), a lifting plate (32), and a connecting part (33). One end of the connecting part (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 inside the main body (1) of the equipment. The lifting mechanism is connected to the lifting plate (32) in a transmission manner. The lifting mechanism is used to drive the lifting plate (32) to move up and down in the separation cavity (2).

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

6. The shrimp shell separation device in shrimp powder according to claim 4, characterized in that, The lifting plate (32) has two support plates (35) integrally formed and fixedly connected on both sides of the end away from the connecting part (33). The sliding plate (31) overlaps the two support plates (35) and can move left and right, and can also move up and down with the lifting plate (32).

7. The shrimp shell separation device in shrimp powder according to claim 2, characterized in that, 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 box (12) on the side near the water inlet pipe (11). The feeding hopper (91) is inclined toward the direction near the water inlet pipe (11). The screw conveyor (92) has a feeding port (93).

8. The shrimp shell separation device in shrimp powder according to claim 7, characterized in that, A vibrator (911) is installed at the bottom of the feed hopper (91).

9. The shrimp shell separation device in shrimp powder according to claim 2, characterized in that, The inlet pipe (11), the first outlet pipe (13) and the second outlet pipe (14) are truncated pyramidal in shape, and the box body (12) is rectangular in shape.

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

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