Continuous circulation shellfish extraction device and use method thereof

Abstract

The invention discloses a continuous circulating shellfish extracting device, which relates to the technical field of aquaculture engineering, and comprises a water-shellfish separating tank, a negative pressure device and a plurality of shellfish collecting tanks, a feeding cavity and a water absorption cavity which are communicated with each other are formed in the water-shell separation tank, and water in a water-shell mixture can enter the water absorption cavity; the multiple shellfish collecting tanks are communicated with the feeding cavity through discharging pipes, and the discharging pipes are provided with discharging control pieces capable of controlling on-off. A discharge port of each shellfish collecting tank is communicated with a discharge pipe, and the discharge pipe is provided with a discharge control piece capable of controlling connection and disconnection; the negative pressure equipment can absorb moisture in the water absorption cavity and provide negative pressure so as to absorb a water-shell mixture into the feeding cavity through the feeding pipe; a water outlet of the negative pressure equipment can be communicated with each shellfish collecting tank through a cleaning pipe, and the cleaning pipe is provided with a cleaning control piece capable of controlling on-off. According to the continuous circulating shellfish extracting device, the production efficiency is improved, and the breakage rate is reduced. The invention further provides a using method of the continuous circulating shellfish extracting device.

Description

Technical Field

[0001] This invention relates to the field of aquaculture engineering technology, and in particular to a continuous circulating shellfish extraction device and its usage method. Background Technology

[0002] In modern shellfish farming industries such as clam and hard clam aquaculture, manual selection and harvesting methods are generally characterized by high costs, low efficiency, and high risks, making it difficult to meet the demands of large-scale, high-efficiency production. While traditional self-priming screw pump harvesting devices achieve mechanized operation, the high-speed collision and compression of shellfish during passage through the pump impeller leads to a high breakage rate, directly causing a decline in product quality and economic losses. Furthermore, existing equipment often operates intermittently, resulting in intermittent delivery and severely restricting production efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a continuous cyclic extraction device for shellfish and its usage method, so as to solve the problems existing in the prior art, improve production efficiency, and reduce the breakage rate.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a continuous circulating shellfish extraction device, comprising a water-shell separation tank, a negative pressure device, and multiple shellfish collection tanks. The water-shell separation tank has a connected feeding chamber and a water suction chamber. The feeding chamber is connected to a feeding pipe for introducing a mixture of water and shellfish, and water in the mixture can enter the water suction chamber. The multiple shellfish collection tanks are each connected to the feeding chamber via a discharge pipe. Shellfish in the feeding chamber can enter the collection tanks through the discharge pipe, and each discharge pipe is equipped with a discharge control mechanism. The device includes control components; each of the shellfish collection tanks has a discharge pipe at its outlet, and each discharge pipe is equipped with a discharge control component that can control the on / off state of the discharge; the negative pressure device has a water inlet connected to the water suction chamber, which can absorb water from the water suction chamber and provide negative pressure to draw the water-shell mixture into the feeding chamber through the feeding pipe; the negative pressure device has a water outlet connected to each of the shellfish collection tanks through a cleaning pipe, and the cleaning pipe is equipped with a cleaning control component that can control the on / off state of the negative pressure device and each of the shellfish collection tanks.

[0006] Preferably, the water-shell separation tank is provided with a partition screen inside, the partition screen is inclined, and each of the feeding pipes is connected to the lower end of the feeding chamber; the feeding chamber and the water absorption chamber are separated and connected by the partition screen, the feeding chamber is placed above the water absorption chamber, and the water in the water-shell mixture in the feeding chamber can enter the water absorption chamber through the partition screen.

[0007] Preferably, each of the shellfish collection tanks is located below the shellfish separation tank, and each of the discharge pipes is vertically arranged.

[0008] Preferably, the number of the cleaning pipes and the cleaning control components is set to multiple, and each cleaning pipe is provided with the cleaning control component.

[0009] Preferably, it further includes a water supply component connected to the feed chamber, the water supply component being used to replenish water to the water-shell separation tank and each of the shell collecting tanks.

[0010] Preferably, the water supply assembly includes a water supply pipe, a water supply pump and a water supply control component disposed on the water supply pipe, wherein the water supply pump is used to provide water supply power, and the water supply control component is used to control the connection and disconnection between the water supply pipe and the feed chamber.

[0011] Preferably, the water-shell separation tank is provided with an observation window and an exhaust port communicating with the feed chamber, and an exhaust control component for controlling the on / off state is provided at the exhaust port.

[0012] Preferably, it further includes a pressure relief control component. The negative pressure device is installed on a water outlet pipe, which connects the water suction chamber and the cleaning pipe. The pressure relief control component is installed on the portion of the water outlet pipe located on the side of the water outlet of the negative pressure device. The pressure relief control component can control the connection and disconnection between the water outlet pipe and the outside.

[0013] Preferably, the system further includes a screening device, which is located below the shellfish collection tank. The screening device is connected to the corresponding shellfish collection tank through each of the discharge pipes, and is used to screen the shellfish falling from the discharge pipes.

[0014] The present invention also provides a method for using the above-mentioned continuous cyclic extraction device for shellfish, comprising the following steps:

[0015] By controlling each of the feeding control components, discharging control components, and cleaning control components, the feeding chamber is connected to at least one shellfish collection tank, and the feeding chamber is disconnected from the remaining shellfish collection tanks. The discharging pipes and cleaning pipes connected to each shellfish collection tank are also disconnected. Then, the negative pressure device works to provide negative pressure to draw the water-shellfish mixture into the feeding chamber through the feeding pipe. Water can enter the water absorption chamber, and shellfish can enter the shellfish collection tank connected to the feeding chamber.

[0016] By controlling the feeding control, discharging control, and cleaning control components, the shellfish collection tank containing shellfish is disconnected from the feeding chamber, while the discharging pipe and cleaning pipe connected to the shellfish collection tank containing shellfish are connected; the shellfish collection tank not containing shellfish is connected to the feeding chamber, while the discharging pipe and cleaning pipe connected to the shellfish collection tank not containing shellfish remain disconnected; the negative pressure device cleans the shellfish in the shellfish collection tank containing shellfish and discharges them through the discharging pipe, while the shellfish collection tank not containing shellfish can be drawn into the feeding chamber through the feeding pipe by the negative pressure of the negative pressure device, allowing the shellfish to enter the shellfish collection tank connected to the feeding chamber;

[0017] Repeat the above steps to disconnect the shellfish collection tank containing shellfish from the feed chamber, and connect the discharge pipe and the cleaning pipe connected to the shellfish collection tank containing shellfish; connect the shellfish collection tank without shellfish to the feed chamber, and disconnect the discharge pipe and the cleaning pipe connected to the shellfish collection tank without shellfish.

[0018] The present invention achieves the following technical effects compared to the prior art:

[0019] The continuous cyclic shellfish extraction device provided by this invention, by setting up feeding control components, discharging control components, and cleaning control components, facilitates the on / off control of the corresponding feeding pipe, discharging pipe, and cleaning pipe. Combined with the setting of multiple shellfish collection tanks, it can meet the requirement of simultaneous shellfish suction and cleaning discharge between different collection tanks, improving the continuous production efficiency of the operation. Furthermore, the shellfish are suctioned and lifted by a negative pressure device, falling directly into the water-shellfish separation tank for water-shellfish separation. Water enters the suction chamber and can be drawn away by the negative pressure device for subsequent cleaning. The shellfish can fall into the collection tank through the feeding pipe, and after cleaning, are discharged through the discharging pipe, reducing shellfish damage caused by mechanical collision and squeezing during transport, significantly improving product yield and market value.

[0020] The continuous cyclic extraction device for shellfish provided by this invention is used in the following way:

[0021] First, preliminary extraction is performed: by controlling the feeding control, discharging control, and cleaning control components, the feeding chamber is connected to at least one shellfish collection tank, while the feeding chamber is disconnected from the remaining shellfish collection tanks, and the discharging pipes and cleaning pipes connected to each shellfish collection tank are disconnected; then, the negative pressure equipment works to provide negative pressure to draw the water-shellfish mixture into the feeding chamber through the feeding pipe, allowing water to enter the water absorption chamber, and allowing the shellfish to enter the shellfish collection tank connected to the feeding chamber for storage;

[0022] The extracted shellfish are cleaned and extracted simultaneously: By controlling the feeding, discharging, and cleaning components, the shellfish collection tank containing shellfish is disconnected from the feeding chamber, while the discharge and cleaning pipes connected to the shellfish collection tank are connected. This allows the negative pressure equipment to work, flushing and cleaning the shellfish in the collection tank containing shellfish. The cleaned shellfish can then be discharged through the discharge pipe. The shellfish collection tank without shellfish is connected to the feeding chamber, while the discharge and cleaning pipes connected to the shellfish collection tank without shellfish remain disconnected. Under the negative pressure of the negative pressure equipment, the water-shellfish mixture can be drawn into the feeding chamber through the feeding pipe, allowing the shellfish to enter the collection tank connected to the feeding chamber for storage.

[0023] Repeat the above steps to disconnect the shellfish collection tank containing shellfish from the feeding chamber, and connect the discharge pipe and the cleaning pipe connected to the shellfish collection tank containing shellfish, so as to clean and discharge the shellfish; connect the shellfish collection tank without shellfish to the feeding chamber, and disconnect the discharge pipe and the cleaning pipe connected to the shellfish collection tank without shellfish, so as to extract and store the shellfish.

[0024] Thus, the continuous cyclic shellfish extraction device and its usage method provided by the present invention can achieve negative pressure extraction under the action of negative pressure equipment, reduce shellfish damage caused by mechanical collision and squeezing during transportation, and greatly improve product yield and market value; and the control of multiple shellfish collection tanks and corresponding feeding control components, discharge control components and cleaning control components can realize uninterrupted extraction, cleaning and shipping of shellfish products, thereby improving production efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the continuous cyclic extraction device for shellfish provided in Embodiment 1 of the present invention.

[0027] In the diagram: 1-Water-shell separation tank; 11-Feeding chamber; 12-Water suction chamber; 13-Separator; 14-Observation window; 15-Exhaust vent; 2-Feed pipe; 3-Collection tank; 31-Discharge pipe; 32-Discharge control component; 33-Discharge pipe; 34-Discharge control component; 4-Negative pressure equipment; 41-Cleaning pipe; 42-Cleaning control component; 5-Water supply assembly; 51-Water supply pipe; 42-Water supply pump; 53-Water supply control component; 6-Water outlet pipeline; 7-Pressure relief control component; 8-Screening equipment. Detailed Implementation

[0028] 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.

[0029] The purpose of this invention is to provide a continuous cyclic extraction device for shellfish and its usage method, so as to solve the problems existing in the prior art, improve production efficiency, and reduce the breakage rate.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] This embodiment provides a device for continuous cyclic extraction of shellfish. Please refer to [link to relevant documentation]. Figure 1 The system includes a shellfish separation tank 1, a negative pressure device 4, and multiple shellfish collection tanks 3. The shellfish separation tank 1 has a connected feed chamber 11 and a water absorption chamber 12. The feed chamber 11 is connected to a feed pipe 2 for introducing the shellfish mixture, and water from the mixture can enter the water absorption chamber 12. The multiple shellfish collection tanks 3 are connected to the feed chamber 11 via discharge pipes 31. Shellfish in the feed chamber 11 can enter the collection tanks 3 through the discharge pipes 31, and each discharge pipe 31 is equipped with a discharge control component 32 to control the flow of the shellfish. Furthermore, each shellfish collection tank 3 has a discharge pipe 33 connected to its outlet, and each discharge pipe 33 is equipped with a discharge control component 34 that can control the on / off state; the inlet of the negative pressure device 4 is connected to the water suction chamber 12, which can absorb water from the water suction chamber 12 and provide negative pressure to draw the water-shell mixture into the feeding chamber 11 through the feeding pipe 2; the outlet of the negative pressure device 4 can be connected to each shellfish collection tank 3 through the cleaning pipe 41, and the cleaning pipe 41 is equipped with a cleaning control component 42 that can control the on / off state of the negative pressure device 4 and each shellfish collection tank 3.

[0033] The system includes a feeding control component 32, an output control component 34, and a cleaning control component 42, which facilitate the on / off control of the corresponding feeding pipe 31, output pipe 33, and cleaning pipe 41. Combined with the setup of multiple shellfish collection tanks 3, it enables simultaneous shellfish suction and cleaning / discharge between different collection tanks 3, improving continuous production efficiency. One end of the feeding pipe 2 extends to the tidal flat area. Shellfish are suctioned and lifted by the negative pressure device 4, falling directly into the water-shellfish separation tank 1 for separation. Water enters the suction chamber 12 and is drawn away by the negative pressure device 4 for subsequent cleaning. Shellfish fall into the collection tank 3 through the feeding pipe 31 and are discharged through the output pipe 33 after cleaning. This reduces damage to shellfish caused by mechanical collision and squeezing during transport, significantly improving product yield and market value.

[0034] In the optional scheme of this embodiment, more preferably, the water-shell separation tank 1 is provided with a partition net 13 inside, the partition net 13 is inclined, and each feed pipe 31 is connected to the lower end of the feed chamber 11; the feed chamber 11 and the water absorption chamber 12 are separated and connected by the partition net 13, the feed chamber 11 is placed above the water absorption chamber 12, and the water in the water-shell mixture in the feed chamber 11 can enter the water absorption chamber 12 through the partition net 13.

[0035] The inclined partition 13 facilitates the separation of water and shellfish, and allows the shellfish to slide down to the lower end of the feeding chamber 11 under the guidance of the inclined partition 13, so that they can enter the shellfish collection tank 3 through the discharge pipe 31. Specifically, the lower end of the partition 13 can be placed in the middle of the feeding chamber 11 to facilitate the collection and discharge of shellfish.

[0036] In the optional scheme of this embodiment, it is more preferred that each shell collecting tank 3 is located below the water shell separating tank 1, and each discharge pipe 31 is vertically arranged.

[0037] By placing the shellfish collection tank 3 below the water-shellfish separation tank 1 and setting the feeding pipes 31 vertically, it is easy for the shellfish to be automatically fed under the action of gravity.

[0038] In the optional scheme of this embodiment, more preferably, the number of cleaning pipes 41 and cleaning control components 42 is set to multiple, and each cleaning pipe 41 is provided with a cleaning control component 42.

[0039] The arrangement of multiple cleaning pipes 41 and multiple cleaning control components 42 facilitates the individual control of the connection and disconnection between the negative pressure device 4 and each collection tank 3.

[0040] In the optional scheme of this embodiment, more preferably, the continuous cyclic extraction shellfish device provided in this embodiment also includes a water supply component 5 connected to the feeding chamber 11. The water supply component 5 is used to replenish water to the water-shellfish separation tank 1 and each shellfish collection tank 3.

[0041] The water supply component 5 is designed to replenish water to the tanks such as the water-shell separation tank 1 and the shell collection tank 3, as well as the connected pipes, before the water-shell mixture is pumped out. After the water supply component 5 is filled, it is turned off. By filling the tank with water in advance, the efficiency of pumping the water-shell mixture is improved by using hydraulic circulation under the suction of the negative pressure equipment.

[0042] In the optional scheme of this embodiment, more preferably, the water supply component 5 includes a water supply pipe 51, a water supply pump 52 and a water supply control component 53 disposed on the water supply pipe 51. The water supply pump 52 is used to provide water supply power, and the water supply control component 53 is used to control the connection and disconnection between the water supply pipe 51 and the feed chamber 11.

[0043] One end of the water supply pipe 51 is connected to a water source, and the other end is connected to the feeding chamber 11. Driven by the water supply pump 52, the cleaning water enters the feeding chamber 11. The water supply control component 53 controls the opening and closing between the water supply pipe 51 and the feeding chamber 11 to meet the water supply needs and can maintain isolation from the outside world so as to extract water from the tank under negative pressure.

[0044] In the optional scheme of this embodiment, more preferably, the water-shell separation tank 1 is provided with an observation window 14 and an exhaust port 15 that connects to the feed chamber 11, and an exhaust control component for controlling the on and off of the exhaust port 15 is provided.

[0045] The observation window 14 is located on the side wall of the feeding chamber 11 to facilitate observation of the separation of water and shellfish inside the feeding chamber 11. In addition, the exhaust port 15 is provided to facilitate the discharge of excess gas from the feeding chamber 11, and the exhaust control component is provided to facilitate the sealing of the exhaust port for negative pressure extraction of water and shellfish.

[0046] In the optional scheme of this embodiment, more preferably, the continuous cyclic extraction shellfish device provided in this embodiment further includes a pressure relief control component 7. The negative pressure device 4 is installed on a water outlet pipe 6. The water outlet pipe 6 connects the water suction chamber 12 and the cleaning pipe 41. The pressure relief control component 7 is installed on the part of the water outlet pipe 6 located on the side of the water outlet of the negative pressure device 4. The pressure relief control component 7 can control the connection and disconnection between the water outlet pipe 6 and the outside.

[0047] The negative pressure device 4 is a self-priming pump installed on the water outlet pipe 6 to absorb water from the water suction chamber 12 and connect it to each collection tank 3 through the cleaning pipe 41; the pressure relief control device 7 is installed so that some of the cleaning water can be discharged to the outside by connecting the water outlet pipe 6 to the outside, and the water outlet cleaning pressure can be controlled.

[0048] In the optional scheme of this embodiment, more preferably, the continuous cyclic extraction shellfish device provided in this embodiment further includes a screening device 8. The screening device 8 is arranged below the shellfish collection tank 3. The screening device 8 is connected to the corresponding shellfish collection tank 3 through each discharge pipe 33. The screening device 8 is used to screen the shellfish falling from the discharge pipe 33.

[0049] Among them, the screening equipment 8 can be set as a vibrating screen to screen the shellfish falling through the discharge pipe 33. Usually, the water-shell mixture extracted contains mud and sand, which enter the screening equipment 8 along with the shellfish. The screening equipment 8 can screen the mud and sand and the size of the shellfish. Specifically, the screening equipment 8 can be set as a multi-layer vibrating steel screen with different mesh sizes.

[0050] In the continuous cyclic shellfish extraction device provided in this embodiment, the feeding control component 32, discharging control component 34, cleaning control component 42, water supply control component 53, and exhaust control component are all set as pneumatic control valves to enable linkage control and realize the corresponding extraction and cleaning functions. Moreover, the above-mentioned pneumatic control valves, as well as the negative pressure device 4 and the water supply pump 52, can be communicatively connected to a central control mechanism such as an electrical control cabinet, and achieve automation through program control, reducing manual intervention and improving the level of automation.

[0051] Example 2

[0052] This embodiment provides a method for using the continuous cyclic extraction device for shellfish in Embodiment 1, including the following steps:

[0053] First, preliminary extraction is performed: by controlling each feeding control component 32, discharge control component 34, and cleaning control component 42, the feeding chamber 11 is connected to at least one shellfish collection tank 3, and the feeding chamber 11 is disconnected from the remaining shellfish collection tanks 3. The discharge pipe 33 and cleaning pipe 41 connected to each shellfish collection tank 3 are also disconnected. Then, the negative pressure device 4 works to provide negative pressure to draw the water-shellfish mixture into the feeding chamber 11 through the feeding pipe 2. Water can enter the water absorption chamber 12, and shellfish can enter the shellfish collection tank 3 connected to the feeding chamber 11.

[0054] The extracted shellfish are cleaned and extracted simultaneously: by controlling the feeding control component 32, the discharge control component 34 and the cleaning control component 42, the shellfish collection tank 3 containing shellfish is disconnected from the feeding chamber 11, and the discharge pipe 33 and the cleaning pipe 41 connected to the shellfish collection tank 3 containing shellfish are connected; the shellfish collection tank 3 not containing shellfish is connected to the feeding chamber 11, and the discharge pipe 33 and the cleaning pipe 41 connected to the shellfish collection tank 3 not containing shellfish are still disconnected; the negative pressure device 4 cleans the shellfish in the shellfish collection tank 3 containing shellfish and discharges them through the discharge pipe 33, while the shellfish collection tank 3 not containing shellfish can be sucked into the feeding chamber 11 through the feeding pipe 2 by the negative pressure of the negative pressure device 4, and the shellfish can enter the shellfish collection tank 3 connected to the feeding chamber 11;

[0055] Repeat the above steps to disconnect the shellfish collection tank 3 containing shellfish from the feeding chamber 11, and connect the discharge pipe 33 and the cleaning pipe 41 connected to the shellfish collection tank 3 containing shellfish; connect the shellfish collection tank 3 without shellfish to the feeding chamber 11, and disconnect the discharge pipe 33 and the cleaning pipe 41 connected to the shellfish collection tank 3 without shellfish.

[0056] The continuous cyclic shellfish extraction device provided in this embodiment can achieve negative pressure extraction under the action of negative pressure equipment 4, reducing damage to shellfish caused by mechanical collision and squeezing during transportation, and greatly improving product yield and market value; and the control of multiple shellfish collection tanks 3 and corresponding feeding control component 32, discharging control component 34 and cleaning control component 42 can realize uninterrupted extraction, cleaning and shipping of shellfish products, improving production efficiency.

[0057] The number of shellfish collection tanks 3 is set according to actual needs. For example, if two tanks are set, the two shellfish collection tanks 3 will perform a cycle operation of cleaning discharge and negative pressure suction.

[0058] In addition, before the initial extraction in the first step, the feeding control unit 32, the discharge control unit 34 and the cleaning control unit 42 are activated, the pressure relief control unit 7 is closed, the water supply pump 52 is run, and working water is added to the tank through the water supply pipe 51; the water discharge status of the discharge pipe 33 is observed, and after confirming that water is discharged, the discharge control unit 34 is closed; after water is discharged from the vent 15, the water supply control unit 53 and the vent control unit are closed; the water discharge pressure of the water discharge pipe 6 is monitored in real time through pressure detection devices such as pressure gauges, and the water discharge pressure of the self-priming pump is adjusted; during the extraction process, since the shellfish collection tank 3 has already stored water, the shellfish can enter the shellfish collection tank 3 from the feeding pipe 31 under the action of gravity to achieve the storage of shellfish in the shellfish collection tank 3. During the feeding process, the negative pressure device 4 flushes water into the shellfish collection tank 3 containing shellfish, and under the impact of the water flow, the shellfish are discharged from the discharge pipe 33 to the screening device 8.

[0059] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A device for continuous cyclic extraction of shellfish, characterized in that: include: The water-shell separation tank (1) is provided with a feed chamber (11) and a water absorption chamber (12) that are connected inside. The feed chamber (11) is connected to a feed pipe (2) for introducing the water-shell mixture, and the water in the water-shell mixture can enter the water absorption chamber (12). Multiple shellfish collection tanks (3) are connected to the feeding chamber (11) via discharge pipes (31). Shellfish in the feeding chamber (11) can enter the shellfish collection tanks (3) through the discharge pipes (31). Each discharge pipe (31) is equipped with a discharge control device (32) that can control the opening and closing of the tank. The outlet of each shellfish collection tank (3) is connected to a discharge pipe (33). Each discharge pipe (33) is equipped with a discharge control device (34) that can control the opening and closing of the pipe. The negative pressure device (4) has an inlet that is connected to the suction chamber (12), which can absorb water in the suction chamber (12) and provide negative pressure to draw water and shellfish mixture into the feeding chamber (11) through the feed pipe (2); the outlet of the negative pressure device (4) can be connected to each of the shellfish collection tanks (3) through the cleaning pipe (41), and the cleaning pipe (41) is provided with a cleaning control component (42) that can control the connection and disconnection between the negative pressure device (4) and each of the shellfish collection tanks (3).

2. The continuous cyclic extraction device for shellfish according to claim 1, characterized in that: The water-shell separation tank (1) is equipped with a partition net (13) inside. The partition net (13) is inclined. Each of the feeding pipes (31) is connected to the lower end of the feeding chamber (11). The feeding chamber (11) and the water absorption chamber (12) are separated and connected by the partition net (13). The feeding chamber (11) is placed above the water absorption chamber (12). The water in the water-shell mixture in the feeding chamber (11) can enter the water absorption chamber (12) through the partition net (13).

3. The continuous cyclic extraction device for shellfish according to claim 1, characterized in that: Each of the shellfish collection tanks (3) is located below the shellfish separation tank (1), and each of the discharge pipes (31) is vertically arranged.

4. The continuous cyclic extraction device for shellfish according to claim 1, characterized in that: The number of the cleaning tubes (41) and the cleaning control components (42) is set to multiple, and each cleaning tube (41) is provided with a cleaning control component (42).

5. The continuous cyclic extraction device for shellfish according to claim 1, characterized in that: It also includes a water supply assembly (5) connected to the feed chamber (11), which is used to replenish water to the water-shell separation tank (1) and each of the shell collection tanks (3).

6. The continuous cyclic extraction device for shellfish according to claim 5, characterized in that: The water supply assembly (5) includes a water supply pipe (51), a water supply pump (52) and a water supply control component (53) disposed on the water supply pipe (51). The water supply pump (52) is used to provide water supply power, and the water supply control component (53) is used to control the connection and disconnection between the water supply pipe (51) and the feed chamber (11).

7. The continuous cyclic extraction device for shellfish according to claim 1, characterized in that: The water-shell separation tank (1) is provided with an observation window (14) and an exhaust port (15) that connects to the feed chamber (11). An exhaust control device for controlling the on / off state is provided at the exhaust port (15).

8. The continuous cyclic extraction device for shellfish according to claim 1, characterized in that: It also includes a pressure relief control component (7). The negative pressure device (4) is installed on a water outlet pipe (6). The water outlet pipe (6) connects the water suction chamber (12) and the cleaning pipe (41). The pressure relief control component (7) is installed on the part of the water outlet pipe (6) located on the side of the water outlet of the negative pressure device (4). The pressure relief control component (7) can control the connection and disconnection between the water outlet pipe (6) and the outside.

9. The continuous cyclic extraction device for shellfish according to claim 1, characterized in that: It also includes a screening device (8), which is located below the shellfish collection tank (3). The screening device (8) is connected to the corresponding shellfish collection tank (3) through each of the discharge pipes (33). The screening device (8) is used to screen the shellfish falling from the discharge pipes (33).

10. A method of using the continuous cyclic extraction device for shellfish as described in any one of claims 1-9, characterized in that: Includes the following steps: By controlling each feeding control component (32), discharge control component (34), and cleaning control component (42), the feeding chamber (11) is connected to at least one shellfish collection tank (3), the feeding chamber (11) is disconnected from the remaining shellfish collection tanks (3), and the discharge pipe (33) and cleaning pipe (41) connected to each shellfish collection tank (3) are disconnected; then the negative pressure device (4) works to provide negative pressure to draw the water-shellfish mixture into the feeding chamber (11) through the feeding pipe (2), water can enter the water absorption chamber (12), and shellfish can enter the shellfish collection tank (3) connected to the feeding chamber (11); By controlling each of the feeding control components (32), the discharging control component (34), and the cleaning control component (42), the shellfish collection tank (3) containing shellfish is disconnected from the feeding chamber (11), and the discharging pipe (33) and the cleaning pipe (41) connected to the shellfish collection tank (3) containing shellfish are connected; the shellfish collection tank (3) not containing shellfish is connected to the feeding chamber (11), and the discharging pipe (33) and the cleaning pipe (41) connected to the shellfish collection tank (3) not containing shellfish are connected. The discharge pipe (33) and the cleaning pipe (41) remain disconnected; the negative pressure device (4) works to clean the shellfish in the shellfish collection tank (3) containing shellfish and discharge them through the discharge pipe (33). At the same time, the shellfish collection tank (3) without shellfish can suck the water-shellfish mixture into the feeding chamber (11) through the feeding pipe (2) under the negative pressure of the negative pressure device (4), and the shellfish can enter the shellfish collection tank (3) connected to the feeding chamber (11); Repeat the above steps to disconnect the shellfish collection tank (3) containing shellfish from the feed chamber (11), and connect the discharge pipe (33) and the cleaning pipe (41) connected to the shellfish collection tank (3) containing shellfish; connect the shellfish collection tank (3) without shellfish to the feed chamber (11), and disconnect the discharge pipe (33) and the cleaning pipe (41) connected to the shellfish collection tank (3) without shellfish.

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