A multi-stage shrimp sorting device and method of operation for sorting shrimp

Abstract

The present application relates to shrimp screening technical field, the present application discloses a kind of multistage shrimp selecting device and operating method for shrimp screening, including screening pool, the inside of the screening pool is from top to bottom respectively provided with first-stage screening frame and second-stage screening frame, empty slot is arranged between the first-stage screening frame and second-stage screening frame, the upper side of the screening pool is fixedly installed with putting frame, the lower side of the putting frame is provided with the arrangement frame of screening pool sliding connection, the side of the screening pool is provided with drive assembly one, the output end of the drive assembly one is connected with reciprocating screw rod, the reciprocating screw rod is rotatably installed on screening pool, and is screwed with arrangement frame, by the screening pool being set, water is screened, avoid the hard contact of shrimp and screening structure, simultaneously avoid the situation of drop and break shell due to collision, by the setting of float frame, cooperate with the water body in screening pool, make dead shrimp float, and it is salvaged, is automatically collected into recycling frame.

Description

Technical Field

[0001] This invention relates to the field of shrimp screening technology, specifically to a multi-stage shrimp selection device and its operation method. Background Technology

[0002] Before being packaged and sold, aquatic products such as shrimp need to be screened and classified into multiple sizes to facilitate subsequent weighing and sales.

[0003] Existing screening machines directly feed shrimp in batches for screening, which has the following drawbacks: the initial end of the screening section is prone to congestion, resulting in slow screening progress and easy stacking; when shrimp come into contact with the screening structure, hard contact occurs, which can easily cause shell breakage and claw loss, resulting in poor appearance of the shrimp and affecting the sales price. To address these drawbacks, this invention proposes a multi-stage shrimp screening device and operating method. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-stage shrimp selection device and operating method for shrimp screening, so as to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: It includes a screening pool, inside which a primary screening rack and a secondary screening rack are respectively arranged from top to bottom, with a gap between the primary and secondary screening racks; a delivery rack is fixedly installed above one side of the screening pool, and a slidable arrangement rack is arranged below the delivery rack and connected to the screening pool.

[0005] A drive assembly is provided on the side of the screening tank. The output end of the drive assembly is connected to a reciprocating screw. The reciprocating screw is rotatably mounted on the screening tank and screwed to the arrangement frame.

[0006] The primary screening rack and the secondary screening rack are each equipped with a movable frame that slides horizontally. The top of each movable frame is fixedly connected to a filter screen, and the top of the filter screen is fixedly connected to the arrangement frame.

[0007] Preferably, a second drive assembly is fixedly installed on one side of the outer surface of the arrangement frame. The second drive assembly includes a pulley group, and an eccentric shaft is fixedly connected to the eccentric part of one of the pulleys in the pulley group. The eccentric shaft is close to the outer wall of the arrangement frame.

[0008] Preferably, the front end of the arrangement frame is hinged to a baffle, the side of the baffle passes through the arrangement frame and is fixedly connected to a connector, the connector has a through groove, and an eccentric shaft is slidably arranged in the through groove.

[0009] Preferably, a curved arm is fixedly connected to the top side of the baffle, and a spring rod is provided on the side of the curved arm and slidably mounted on the arrangement frame. A support plate is fixedly connected to the top end of the spring rod, and the two ends of the elastic element on the spring rod abut against the arrangement frame and the support plate respectively. The support plate abuts against the curved arm.

[0010] Preferably, a recycling rack is fixedly connected to the side of one of the upper filter screens. The recycling rack is located below the opening of the arrangement rack and is inclinedly connected to the filter screen. A retrieval float is hinged to the top of the recycling rack, and the retrieval float is bent in the direction of movement.

[0011] Preferably, the end of the retrieval float passes through the recovery frame and is connected to a torsion spring.

[0012] Preferably, a trigger arm is fixedly connected to the top side of the retrieval float, the trigger arm is inclined, and a vertical pole is slidably connected to the side of the retrieval frame.

[0013] Preferably, a wedge block is horizontally slidably connected to one side of the top of the upright, the surface of the wedge block abuts against the trigger arm, and a spring is movably sleeved at the connection between the wedge block and the upright.

[0014] Preferably, a stop shaft is fixedly connected to one side of the screening pool, the stop shaft abuts against the trigger arm, a lifting rod is fixedly connected to the top of the upright, and an inclined guide plate is fixedly connected to the side of the screening pool opposite to the stop shaft, the surface of the inclined guide plate penetrates the filter screen and abuts against the lifting rod.

[0015] Preferably, an operating method for a multi-stage shrimp selection device includes the following steps:

[0016] S1: After the equipment is started, the arrangement rack moves to the bottom of the feeding rack to load the material. After loading, it moves back and the baffle automatically opens and closes repeatedly. In conjunction with the elastic structure, it achieves uniform and dispersed shrimp feeding, avoids accumulation, and improves screening quality.

[0017] S2: After the shrimp enter the water, they undergo wet grading and screening. Large shrimp are retained on the primary screening rack, while small shrimp fall to the secondary screening rack. The water can buffer the impact, reducing damage such as shrimp losing claws or breaking their shells. At the same time, dead shrimp float on the surface of the water, making it easier to retrieve them later.

[0018] S3: After a single screening is completed, the equipment resets and replenishes the material. The filter screen moves to collect the live shrimp after screening. The floating frame moves with the stroke to scoop up dead shrimp from the water surface. When it reaches the limit position, it automatically flips over to unload the material. After returning, it automatically resets and continues to cycle the floating operation.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In this invention, the baffle is opened intermittently during the movement of the arrangement frame to feed the shrimp in portions, ensuring that they are relatively evenly distributed on the screening frame and preventing incomplete screening caused by congestion and stacking.

[0021] In this invention, screening is carried out in water through a screening pool, which avoids hard contact between shrimp and the screening structure, and also avoids the occurrence of claw loss and shell breakage due to collision.

[0022] In this invention, dead shrimp are floated by a set retrieval frame in conjunction with the water in the screening pool, and are then retrieved and automatically collected into a recycling rack. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a cross-sectional structural diagram of the screening pool of the present invention;

[0025] Figure 3 This is a side view of the structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the connecting component and the eccentric shaft of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the retrieval float and recovery frame of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the retaining shaft and the inclined guide plate of the present invention.

[0029] In the diagram: 1. Screening pool; 2. Primary screening rack; 3. Secondary screening rack; 4. Feeding rack; 5. Arrangement rack; 6. Drive assembly one; 7. Reciprocating screw; 8. Moving frame; 9. Filter screen; 10. Drive assembly two; 11. Eccentric shaft; 12. Baffle; 13. Connecting piece; 14. Through groove; 15. Bent arm; 16. Elastic rod; 17. Support plate; 18. Retrieval rack; 19. Floating retrieval frame; 20. Torsion spring; 21. Trigger arm; 22. Upright pole; 23. Wedge block; 24. Spring; 25. Stop shaft; 26. Lifting rod; 27. Inclined guide plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1 to 6 The present invention provides a technical solution: including a screening pool 1, wherein a primary screening rack 2 and a secondary screening rack 3 are respectively arranged from top to bottom inside the screening pool 1, and a gap is provided between the primary screening rack 2 and the secondary screening rack 3; a delivery rack 4 is fixedly installed on the upper side of one side of the screening pool 1, and an arrangement rack 5 that is slidably connected to the screening pool 1 is provided below the delivery rack 4.

[0032] In this embodiment, as the shrimp fall from the arrangement rack 5, they first come into contact with the water surface of the screening pool 1 and fall downwards. Shrimp of the size selected by the composite primary screening rack 2 remain on the primary screening rack 2, while those smaller than this size pass through the primary screening rack 2 and fall onto the secondary screening rack 3, completing the screening operation. According to the setting of the screening pool 1, screening with water reduces the impact force generated by the hard contact between the shrimp and the screening rack when they are put into the screening, reducing the occurrence of shrimp losing their claws or breaking their shells. In addition, the water can allow shrimp that have been dead for a long time to float on the surface for subsequent retrieval.

[0033] A drive assembly 6 is provided on the side of the screening tank 1. The output end of the drive assembly 6 is connected to a reciprocating screw 7. The reciprocating screw 7 is rotatably mounted on the screening tank 1 and screwed to the arrangement frame 5.

[0034] A movable frame 8 is horizontally slidably installed on the primary screening rack 2 and the secondary screening rack 3 respectively. A filter screen 9 is fixedly connected to the top of the movable frame 8 respectively. The top of the filter screen 9 is fixedly connected to the arrangement frame 5.

[0035] A drive assembly 2 10 is fixedly installed on one side of the outer surface of the arrangement frame 5. The drive assembly 2 10 includes a pulley group, and an eccentric shaft 11 is fixedly connected to the eccentric part of one of the pulleys of the pulley group. The eccentric shaft 11 is close to the outer wall of the arrangement frame 5.

[0036] A baffle 12 is hinged to the front end of the arrangement frame 5. The side of the baffle 12 passes through the arrangement frame 5 and is fixedly connected to a connector 13. A through groove 14 is provided on the connector 13, and an eccentric shaft 11 is slidably arranged in the through groove 14.

[0037] A bent arm 15 is fixedly connected to the top side of the baffle 12. A spring rod 16 is slidably installed on the side of the bent arm 15 on the arrangement frame 5. A support plate 17 is fixedly connected to the top end of the spring rod 16. The two ends of the elastic element on the spring rod 16 abut against the arrangement frame 5 and the support plate 17 respectively. The support plate 17 abuts against the bent arm 15.

[0038] In this embodiment, at the start of screening, drive component 1 6 controls the arrangement rack 5 to move downwards towards the delivery rack 4 via the reciprocating screw 7, releasing shrimp in batches into the arrangement rack 5. At this time, the baffle 12 is in a closed state, sealing the opening of the arrangement rack 5. After loading is completed, drive the arrangement rack 5 to move further away, without releasing shrimp downwards during this process. When the arrangement rack 5 moves to a position in the screening tank 1 opposite to the delivery rack 4, drive the arrangement rack 5 to move closer to the delivery rack 4 again. During this process, drive component 2 10 is activated, rotating via the eccentric shaft 11. The rotation causes the connecting piece 13 to open the baffle 12 through the through groove 14. During this process, the bent arm 15 compresses the elastic element of the elastic rod 16, and the elastic rod 16 retracts into the arrangement frame 5. As the baffle 12 opens, the shrimp inside fall into the screening pool 1. Subsequently, the eccentric shaft 11 disengages from the connecting piece 13, the baffle 12 returns to its original position, and the opening of the arrangement frame 5 is closed. Then it opens again, performing a reciprocating opening and closing operation to ensure that the shrimp in the arrangement frame 5 are evenly and linearly distributed, ensuring that the shrimp are evenly dispersed when they are placed in the arrangement frame, thus improving the screening effect.

[0039] One of the upper filter screens 9 is fixedly connected to a recycling rack 18 on its side. The recycling rack 18 is located below the opening of the arrangement rack 5 and is inclinedly connected to the filter screen 9. The top of the recycling rack 18 is hinged to a retrieval float 19, which is bent in the direction of movement.

[0040] The end of the retrieval float 19 passes through the recovery frame 18 and is connected to a torsion spring 20;

[0041] A trigger arm 21 is fixedly connected to the top side of the retrieval float 19. The trigger arm 21 is inclined. A vertical pole 22 is slidably connected to the side of the retrieval frame 18.

[0042] A wedge block 23 is horizontally slidably connected to one side of the top of the upright 22. The surface of the wedge block 23 abuts against the trigger arm 21. A spring 24 is movably sleeved at the connection between the wedge block 23 and the upright 22.

[0043] A stop shaft 25 is fixedly connected to one side of the screening tank 1. The stop shaft 25 abuts against the trigger arm 21. A lifting rod 26 is fixedly connected to the top of the upright 22. An inclined guide plate 27 is fixedly connected to the side of the screening tank 1 opposite to the stop shaft 25. The surface of the inclined guide plate 27 penetrates the filter screen 9 and abuts against the lifting rod 26.

[0044] In this embodiment, after the shrimp are released once, they move to the release rack 4 to be loaded with more shrimp. The moving rack 8 and the filter screen 9 move to push the sieved shrimp for collection. At the same time, the scooping float 19 extends into the water surface to collect dead shrimp floating on the surface. When it approaches the stop shaft 25, the trigger arm 21 is pushed, causing the scooping float 19 to rotate around the recovery rack 18, turning the collected dead shrimp over and pouring them into the recovery rack 18. At this time, the trigger shaft passes through the wedge block 23 and is engaged by it. During the return process, the scooping float 19 will not block the downward release operation of shrimp. When it reaches the release rack 4 again, the lifting rod 26 contacts the inclined guide plate 27 and is pushed upward by the inclined guide plate 27, causing the trigger arm 21 to lose its limit. The scooping float 19 returns to its position under the action of the torsion spring 20 and performs the scooping operation again.

[0045] The invention's usage and advantages: This multi-stage shrimp selection device and its operating method for shrimp screening work as follows:

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown:

[0047] S1: After the equipment is started, the arrangement rack 5 moves to the bottom of the feeding rack 4 to load the material. After loading, it moves back and the baffle 12 automatically opens and closes back and forth. In conjunction with the elastic structure, it realizes the uniform and dispersed dropping of shrimp into the water, avoids accumulation, and improves the screening quality.

[0048] S2: After the shrimp enter the water, they undergo wet grading and screening. Large shrimp are retained in the first-level screening rack 2, while small shrimp fall to the second-level screening rack 3. The water can buffer the impact, reduce the damage of shrimp losing claws and breaking shells, and at the same time make dead shrimp float on the surface of the water, making it easier to catch them later.

[0049] S3: After a single screening is completed, the equipment resets and replenishes the material. The filter screen 9 moves to collect the live shrimp after screening. The floating frame 19 moves with the stroke to retrieve dead shrimp from the water surface. When it reaches the limit position, it automatically flips over to unload the material. After returning, it automatically resets and continues to cycle the floating operation.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage shrimp selection device for shrimp screening, characterized in that, The screen includes a screening pool (1), and a primary screening rack (2) and a secondary screening rack (3) are respectively arranged inside the screening pool (1) from top to bottom. There is a gap between the primary screening rack (2) and the secondary screening rack (3). A delivery rack (4) is fixedly installed on the upper side of one side of the screening pool (1), and a placement rack (5) that is slidably connected to the screening pool (1) is arranged below the delivery rack (4). The side of the screening pool (1) is provided with a drive assembly (6), and the output end of the drive assembly (6) is connected to a reciprocating screw (7). The reciprocating screw (7) is rotatably installed on the screening pool (1) and screwed to the arrangement frame (5). The primary screening rack (2) and the secondary screening rack (3) are respectively equipped with a movable frame (8) that slides horizontally. The top of the movable frame (8) is fixedly connected to a filter screen (9), and the top of the filter screen (9) is fixedly connected to the arrangement frame (5).

2. The multi-stage shrimp selection device for shrimp screening according to claim 1, characterized in that: A drive assembly two (10) is fixedly installed on one side of the outer surface of the arrangement frame (5). The drive assembly two (10) includes a pulley group, and an eccentric shaft (11) is fixedly connected to the eccentric part of one of the pulleys of the pulley group. The eccentric shaft (11) is close to the outer wall of the arrangement frame (5).

3. The multi-stage shrimp selection device for shrimp screening according to claim 2, characterized in that: The front end of the arrangement frame (5) is hinged with a baffle (12), the side of the baffle (12) passes through the arrangement frame (5) and is fixedly connected with a connector (13), a through groove (14) is provided on the connector (13), and an eccentric shaft (11) is slidably arranged in the through groove (14).

4. The multi-stage shrimp selection device for shrimp screening according to claim 3, characterized in that: A curved arm (15) is fixedly connected to the top side of the baffle (12). A spring rod (16) is slidably mounted on the arrangement frame (5) on the side of the curved arm (15). A support plate (17) is fixedly connected to the top end of the spring rod (16). The two ends of the elastic element on the spring rod (16) abut against the arrangement frame (5) and the support plate (17) respectively. The support plate (17) abuts against the curved arm (15).

5. A multi-stage shrimp selection device for shrimp screening according to claim 4, characterized in that: One of the upper filter screens (9) is fixedly connected to a recycling rack (18) on its side. The recycling rack (18) is located below the opening of the arrangement rack (5) and is inclinedly connected to the filter screen (9). The top of the recycling rack (18) is hinged to a retrieval float (19), which is bent in the direction of movement.

6. A multi-stage shrimp selection device for shrimp screening according to claim 5, characterized in that: The end of the retrieval float (19) passes through the recovery frame (18) and is connected to a torsion spring (20).

7. A multi-stage shrimp selection device for shrimp screening according to claim 6, characterized in that: A trigger arm (21) is fixedly connected to the top side of the retrieval float (19), the trigger arm (21) is inclined, and a vertical pole (22) is slidably connected to the side of the retrieval frame (18).

8. A multi-stage shrimp sorting device for shrimp screening according to claim 7, characterized in that: A wedge (23) is horizontally slidably connected to one side of the top of the pole (22). The surface of the wedge (23) abuts against the trigger arm (21). A spring (24) is movably sleeved at the connection between the wedge (23) and the pole (22).

9. A multi-stage shrimp selection device for shrimp screening according to claim 8, characterized in that: A baffle (25) is fixedly connected to one side of the screening pool (1), the baffle (25) abuts against the trigger arm (21), a lifting rod (26) is fixedly connected to the top of the upright (22), and an inclined guide plate (27) is fixedly connected to one side of the screening pool (1) relative to the baffle (25). The surface of the inclined guide plate (27) penetrates the filter screen (9) and abuts against the lifting rod (26).

10. The operating method of a multi-stage shrimp selection device for shrimp screening according to any one of claims 1-9, characterized in that, Includes the following steps: S1: After the equipment is started, the arrangement rack (5) moves to the bottom of the feeding rack (4) to load the material. After loading, it moves back and the baffle (12) automatically opens and closes repeatedly. In conjunction with the elastic structure, it achieves uniform and dispersed feeding of shrimp into the water, avoids accumulation, and improves the screening quality. S2: After the shrimp enter the water, wet grading and screening are completed. Large-sized shrimp are retained on the first-level screening rack (2), and small-sized shrimp fall to the second-level screening rack (3). The water can buffer the impact, reduce the damage of shrimp losing claws and breaking shells, and at the same time make dead shrimp float on the water surface, which is convenient for subsequent retrieval. S3: After a single screening is completed, the equipment resets and replenishes the material. The filter screen (9) moves to collect the live shrimp after screening. The floating frame (19) moves with the stroke to retrieve dead shrimp from the water surface. When it reaches the limit position, it automatically flips over to unload the material. After returning, it automatically resets and continues to cycle the floating operation.

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