Elevator type multichannel eDNA automatic fixed-point enrichment device

Abstract

The invention provides an elevator type multichannel eDNA automatic fixed-point enrichment device, and relates to the technical field of deep-sea microorganism sampling, the elevator type multichannel eDNA automatic fixed-point enrichment device comprises a filtering cabin and a watertight cabin; the filtering cabin comprises a water guiding stand column assembly, more than 40 filtering film boxes, a base, a pump head assembly and the like, a piston of the water guiding stand column assembly can switch the filtering film boxes under the driving of a lead screw motor, accurate distribution of seawater is realized, four filtering films are simultaneously filtered at each sampling point, and the efficiency is improved. A master controller of the watertight cabin controls a lead screw motor and a water pump motor, sampling control is automatically completed according to commands of the submersible vehicle, and the internal normal pressure is maintained through the special sealing design. The base filter has both pressure balancing and primary filtering functions. The device is compact in structure and resistant to corrosion, can efficiently collect multi-time-sequence microorganism samples in deep sea in situ, meets the environment monitoring requirements in activities such as deep sea mining, and provides a powerful tool for deep sea microorganism research.

Description

Technical Field

[0001] The present invention relates to the technical field of deep - sea microorganism sampling, and in particular, to a lift - ladder - type multi - channel eDNA automatic fixed - point enrichment device. Background Art

[0002] Marine mineral resources are diverse and rich in reserves. Especially in the deep - sea area, there are a large number of important resources, such as polymetallic nodules, cobalt - rich crusts, and polymetallic sulfides. Deep - sea mining, as a new way to obtain seabed resources, has significant economic and strategic significance. These resources are mainly distributed in the deep - sea plains at a water depth of 4000 to 6000 meters, usually far from land.

[0003] In deep - sea mining, the problem of environmental damage has attracted increasing attention. In particular, the monitoring and assessment of the impact on benthic organisms, especially macrobenthos, and their recovery situation are particularly urgent. Biological communities such as microorganisms and algae inhabiting the metal - nodule sediment environment face severe challenges from extreme environmental conditions such as heavy - metal pollution, nutrient deficiency, high pressure, and low temperature. In recent years, scientific organizations in various countries have carried out relevant research to systematically monitor the environmental impacts that may be caused by deep - sea mining, with particular attention to the impact on benthic organisms and their recovery situation.

[0004] Generally, underwater sampling equipment in the deep - sea area usually uses a submersible to carry multiple collection bottles (or other containers) with automatically openable and closable bottle mouths. After reaching the target area, the sampler automatically opens the water inlet and outlet of the collection bottle, and through a pump or the flow of water with the submersible, the collection bottle is filled with seawater in this area, and then the water inlet and outlet are closed. When all the collection bottles are filled with seabed water samples, the submersible carries the sampling equipment and floats to the water surface, and researchers remove the collection bottles and filter the collected seabed water samples for subsequent related processing and analysis. This sampling scheme is limited by the volume of a single collection bottle and the number of collection bottles carried by the submersible during a single dive, and obviously cannot adapt to the sampling and filtering tasks of dozens of points in a wide deep - sea area and a large volume of seawater. Summary of the Invention

[0005] According to the above - mentioned technical problems, a lift - ladder - type multi - channel eDNA automatic fixed - point enrichment device is specifically designed. Its structure adopts a lift - ladder - type structure, and the piston is driven to lift through the lead screw in the water - guiding column assembly, realizing multi - channel switching of the sampling membrane box, and capable of effectively sampling microorganisms at multiple sampling points in a wide area of the deep sea and in a large volume of seawater.

[0006] To achieve the above object, the present invention provides a lift - ladder - type multi - channel eDNA automatic fixed - point enrichment device, including: a filtration chamber, a watertight chamber:

[0007] The filtering chamber includes a water guiding column assembly, a plurality of filter membrane cartridges, an internal and external seawater filtering and exchanging base, a water pump head assembly, a connecting water pipe, and an outer cylinder of the filtering chamber; the water guiding column assembly consists of a water guiding column body, a water distribution piston, a driving lead screw, a guiding optical rod, a water outlet joint, and a fixing base for the filter membrane cartridge, located in the middle of the filtering chamber, with its lower end fixed to the watertight cabin adapter seat and its upper end fixed to the outer cylinder of the filtering chamber. A plurality of water outlet threaded holes are evenly distributed around the water guiding column body at intervals of 90°. The threaded holes are provided with water outlet joints, and fixing brackets for fixing the filter membrane cartridges are installed on both left and right sides of the water outlet joints. Inside the water guiding column body, a piston, a driving trapezoidal lead screw, a guiding optical rod, and a prefabricated spiral water pump outlet hose are installed.

[0008] The watertight cabin includes an adapter seat, a bottom shell, a lead screw motor, a water pump, two motor drivers, and a main controller; the main controller is the control core, interconnected with the submersible through a through-cabin cable, receiving power supply and control commands from the submersible. The main controller controls the two motor drivers, and then controls the operation of the lead screw motor and the water pump motor, automatically completing the switching of the filter membrane cartridges, the collection and filtration of seawater, the control of flow rate and collection volume. The watertight cabin maintains an internal normal pressure sealed working environment through the static high-pressure sealing of the bottom shell and the adapter seat member, and the high-pressure rotary sealing of the motor shaft.

[0009] Further, a driving lead screw and a guiding optical rod are provided inside the water guiding column assembly. The driving lead screw can rotate forward and backward under the drive of the lead screw motor, driving the water distribution piston to move up and down. The water distribution piston is connected to the water pump outlet through a spiral hose. The water pump extracts and presses seawater into the specified filter membrane cartridge through the spiral hose, the water distribution piston, the water guiding column, and the water outlet joint.

[0010] Further, there are no less than 40 filter membrane cartridges in the filtering chamber. Each filter membrane cartridge is evenly distributed around the water guiding column. A water guiding ring groove is provided on the side wall of the piston inside the water guiding column. The piston is connected to the water pump outlet through a hose. The piston can controllably switch any two groups of filter membrane cartridges to collect and filter seawater samples simultaneously, and a filter membrane is installed on the upper and lower surfaces of each filter membrane cartridge respectively, realizing the simultaneous filtration of microorganisms in seawater by four filter membranes at the same point.

[0011] Further, the filter membrane cartridge adopts a design of opening the upper and lower covers to install the filter membrane, with lateral water inlet. Inside the filter membrane cartridge, there are a metal outer net plate, a metal inner net plate, and filter paper. Different pore-sized filter membranes can be installed in each filter membrane cartridge to collect different populations of microorganisms in seawater in different regions.

[0012] Further, the base of the filtering chamber is connected to the watertight cabin adapter seat. A filter is installed above the base. The filter is divided into two groups. One group is used for filtering the seawater exchanged when the pressure inside and outside the filtering chamber is balanced, and the other group is connected in parallel for primary filtration of the sampled seawater.

[0013] Furthermore, the outer cylinder of the filtration chamber is used to isolate the interior of the filtration chamber from the external space, preventing large particulate impurities, etc. from entering the interior of the filtration chamber and ensuring the normal operation of the piston and the lead screw.

[0014] Furthermore, six filters are installed on the base of the filtration chamber. Three of the filters are used for seawater exchange when the pressure inside and outside the chamber is balanced, and the other three filters are connected in parallel for primary filtration of the sampled seawater, avoiding jamming or blockage of the water pump and pipeline.

[0015] Furthermore, the water pump uses a vane pump, which has a large flow rate and can tolerate impurities with relatively large particles. The water pump consists of a pump body, an inner rotor, a stator, a pump cover, and sliding vanes. Relying on centrifugal force, the sliding vanes are pressed against the eccentric stator to achieve the extraction and injection of seawater.

[0016] Due to the adoption of the above technical solutions, compared with the prior art, the present invention has the following advantages:

[0017] 1. An elevator-type multi-channel eDNA automatic fixed-point enrichment device provided by the present invention uses 2 filtration membrane cartridges for simultaneous sampling and filtration at a single sampling point. Each membrane cartridge has 1 filtration membrane on each of its upper and lower surfaces, enabling 4 filtration membranes at the same point to work simultaneously, significantly increasing the volume of filtered seawater per unit time, shortening the sampling time, and being able to effectively handle the sampling and filtration tasks of large volumes of seawater at multiple points in a wide area of the deep sea, having significant advantages compared with traditional sampling schemes.

[0018] 2. An elevator-type multi-channel eDNA automatic fixed-point enrichment device provided by the present invention uses the main controller in the watertight cabin as the control core. According to the commands transmitted by the submersible, it can accurately control two motor drivers, and then realize the regulation of the lead screw motor and the water pump motor, automatically complete the switching of the filtration membrane cartridges, seawater sampling and filtration, flow rate and sampling volume control, meet different sampling requirements, and is easy to operate and highly intelligent.

[0019] 3. An elevator-type multi-channel eDNA automatic fixed-point enrichment device provided by the present invention has a small and compact structure and high integration. The filtration chamber adopts an open design, and the internal components are made of materials such as aluminum alloy (hard anodized on the surface), stainless steel, and POM engineering plastics. The watertight cabin uses stainless steel materials and can withstand a water pressure of 60MP through a special sealing design. The overall corrosion resistance is strong, and it can work stably in situ in the deep sea for a long time, and can be widely used in the collection of deep sea samples at different depths, providing strong support for deep sea microbial research.

[0020] Based on the above reasons, the present invention can be promoted in the field of deep sea microbial sampling technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of a lift-type multi-channel eDNA automatic fixed-point enrichment device according to the present invention;

[0023] Figure 2 It is a schematic diagram of the filter membrane cartridge structure in a lift-type multi-channel eDNA automatic fixed-point enrichment device according to the present invention.

[0024] In the figure: 1. Outer cylinder of the filter chamber; 2. Guide optical bar; 3. Water outlet joint; 4. Connecting water pipe; 5. Water pump pump head assembly; 6. Main controller; 7. Water pump; 8. Lead screw motor; 9. Top cover; 10. Sampler filter chamber; 11. Filter membrane cartridge; 12. Water guide column assembly; 13. Water distribution piston; 14. Driving trapezoidal lead screw; 15. Filter membrane cartridge fixing base; 16. Filter; 17. Adapter seat; 18. Bottom shell; 19. Motor driver; 20. Watertight chamber; 21. Upper filter membrane cartridge cover; 22. First filter membrane; 23. Metal outer mesh plate; 24. First gasket; 25. Water inlet; 26. Second gasket; 27. Metal inner mesh plate; 28. Second filter membrane; 29. Lower filter membrane cartridge cover; 30. Filter membrane cartridge seat. Detailed implementation manners

[0025] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The following will refer to the accompanying drawings and combine the embodiments to detail the present invention.

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. The description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] It should be noted that the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the exemplary embodiments of the present invention. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present invention. The orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0030] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be oriented "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be oriented in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations will be made for the spatial relative descriptions used herein.

[0031] In addition, it should be noted that the use of terms such as "first", "second" etc. to limit components is only for the convenience of differentiating the corresponding components. Without further statement, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.

[0032] As Figure 1 shown, the present invention provides a lift-type multi-channel eDNA automatic fixed-point enrichment device, including: a filtration chamber, a watertight chamber 20:

[0033] The filtration chamber includes a water guiding column assembly 12, a plurality of filter membrane cartridges 11, an inner and outer seawater filtration and exchange base, a water pump pump head assembly 5, a connecting water pipe 4, and an outer cylinder 1 of the filtration chamber; the water guiding column assembly 12 is composed of a water guiding column body, a water distribution piston 13, a driving lead screw, a guiding optical rod 2, a water outlet joint 3, and a filter membrane cartridge fixing base 15. It is located in the middle of the filtration chamber, its lower end is fixed to the watertight chamber adapter seat 17, and its upper end is fixed to the outer cylinder of the filtration chamber. A plurality of water outlet threaded holes are evenly distributed around the water guiding column body at intervals of 90°. The water outlet joint 3 is installed in the threaded hole, and filter membrane cartridge fixing bases 15 are installed on both the left and right sides of the water outlet joint 3. A piston, a driving trapezoidal lead screw 14, a guiding optical rod 2, and a prefabricated water outlet hose of a water pump 7 in a spiral state are installed inside the water guiding column body.

[0034] The watertight compartment 20 includes an adapter base 17, a bottom shell 18, a lead screw motor 8, a water pump 7, two motor drivers 19, and a main controller 6. The main controller 6 is the control core, interconnected with the submersible through a penetrator cable, receiving power supply and control commands from the submersible. The main controller 6 controls the two motor drivers 19, and further controls the operation of the lead screw motor 8 and the water pump 7, automatically completing the switching of the filter cartridge 11, seawater collection and filtration, flow rate and collection volume control. The watertight compartment maintains an internal normal pressure sealed working environment through the static high-pressure sealing between the bottom shell 18 and the adapter base 17 and the high-pressure rotary sealing design of the motor shaft.

[0035] Furthermore, the filtration compartment 10 consists of a water guiding column assembly 12 located in the center, filter cartridges 11 distributed around the water guiding column, an internal and external seawater filtration and exchange base 15 located at the bottom, a water pump pump head assembly 5, a connecting water pipe 4, an outer cylinder 1 of the sample filtration compartment to prevent impurities from entering, and a top cover 9. The water guiding column assembly 12 is located in the middle of the sampler filtration compartment, its lower end is fixed to the submersible watertight compartment adapter base 17, and the upper end is used to fix the outer cylinder 1 of the filtration compartment. 40 water outlet threaded holes are evenly distributed at intervals of 90° around the water guiding column body 12. Water outlet connectors 3 are installed in the threaded holes for connecting with the filter cartridges 11. A pair of fixing brackets are installed on both sides of each water outlet connector for fixing the filter cartridges 11. Inside the water guiding column body 12, there is a piston 13, a driving trapezoidal lead screw 14, two guiding optical rods 2, and a prefabricated water pump outlet hose in a spiral state. The lead screw inside the water guiding column assembly 12 can rotate forward and backward under the drive of the lead screw motor 8. Every time the lead screw rotates 8 circles, the piston rises or falls by the position of one water outlet connector. The outlet of the water pump 7 is connected to the circumferential groove of the piston through a spiral hose. The groove communicates with the central hole of the water outlet connector, and the water outlet connector is connected to the filter cartridge 11, realizing that the water pump 7 pumps and presses seawater into the specified numbered filter cartridge 11 through the spiral hose, the water dividing piston 13, the water guiding column 12, and the water outlet connector. The lead screw 14 of the water guiding column assembly 12 and the nut inside the piston adopt a trapezoidal thread design, so that the piston can be self-locked on the lead screw to avoid uncontrolled movement.

[0036] Furthermore, the filter cartridge 11 is as Figure 2As shown in the figure, the filter membrane is installed with upper and lower covers, and the design of lateral water inlet is adopted. The filter membrane cartridge 11 is composed of an upper filter membrane cartridge cover 21, a lower filter membrane cartridge cover 29, a metal outer mesh plate 23, a water inlet 25, a first gasket 24, a second gasket 26, a filter membrane cartridge seat 30, a metal inner mesh plate 27, a first filter membrane 22, and a second filter membrane 28. The filter membrane cartridges are evenly distributed around the water guiding column 12 at an interval of 90°. 10 filter membrane cartridges are installed on each side. The filter membrane cartridges 11 at the 0° position and the 180° position are at the same height, and the filter membrane cartridges 11 at the 90° position and the 270° position are at another height. In this way, 40 filter membrane cartridges 11 are divided into 20 groups, with 2 in each group receiving and filtering the seawater at the current position simultaneously. Different pore-size first filter membranes 22 and second filter membranes 28 can be installed in each filter membrane cartridge 11 respectively.

[0037] Furthermore, the filter membrane cartridge fixing base 15 is located at the lower part of the sampler filter chamber 10. The lower end face of the base 15 is connected to the watertight chamber adapter seat 17 of the sampler. The upper end face of the base is used to fix the outer cylinder 1 of the filter chamber. 6 filters 16 are installed on the circumference of the base. The filters are divided into 2 groups. One group of 3 filters is used to filter the seawater exchanged due to the pressure balance inside and outside the filter chamber, avoiding large-particle impurities or excess substances from entering the interior of the filter chamber. The other group of 3 filters is connected in parallel and connected to the water inlet of the water pump 7 to conduct primary filtration on the seawater pumped into the water pump 7, avoiding jamming or blockage of the water pump 7 and the pipeline.

[0038] Furthermore, the water pump 7 in the filter chamber adopts a vane pump, which has the advantages of large flow rate and can tolerate larger-particle impurities. The water pump 7 is composed of a pump body, an inner rotor, a stator, a pump cover, and sliding vanes. Its working principle is that the sliding vanes are pressed against the eccentric stator by centrifugal force. The volume between the two sliding vanes at the inlet increases to absorb water, and the volume between the two sliding vanes at the outlet decreases to drain water. Then, the seawater is pumped from the water inlet and pressed into the water outlet. The stable pumping performance provides a continuous and stable seawater supply for the entire sampling device, helping to maintain the filtration pressure and water flow rate in the filter membrane cartridge 11, and ensuring the efficiency and quality of microbial sampling.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An elevator-type multi-channel eDNA automatic fixed-point enrichment device, characterized in that: include: Filter compartment, watertight compartment: The filter cabin comprises a water guide column assembly, a plurality of filter membrane boxes, an internal and external seawater filter exchange base, a water pump head assembly, a connecting water pipe and an outer cylinder of the filter cabin; the water guide column assembly consists of a water guide column body, a water distribution piston, a driving lead screw, a guide light bar, a water outlet joint and a filter membrane box fixing base, and is located in the middle of the filter cabin, with its lower end fixed to the watertight cabin adapter, and the upper end fixed to the outer cylinder of the filter cabin, a plurality of water outlet threaded holes are evenly distributed around the water guide column body at an interval of 90°, the threaded holes are installed with water outlet joints, and fixed brackets for fixing the filter membrane box are installed on the left and right sides of the water outlet joint, and a piston, a driving trapezoidal lead screw, a guide light bar and a water pump outlet hose prefabricated in a spiral state are installed inside the water guide column body; The watertight compartment includes an adapter, a bottom shell, a screw motor, a water pump, two motor drivers and a main controller; the main controller is the control core, which is interconnected with the submersible through a through-cabin cable and receives power supply and control commands from the submersible. The main controller controls the two motor drivers, and then controls the operation of the screw motor and the water pump motor, automatically completing the switching of the filter membrane box, seawater collection and filtration, and flow and collection volume control. The watertight compartment maintains an internal normal pressure sealed working environment through the static high-pressure seal of the bottom shell and the adapter, and the high-pressure rotating seal design of the motor shaft.

2. The elevator-type multi-channel eDNA automatic fixed-point enrichment device according to claim 1, characterized in that: A driving screw and a guide light rod are arranged inside the water guide column assembly. The driving screw can rotate forward and reversely under the drive of the screw motor, driving the water distribution piston to move up and down. The water distribution piston is connected to the water outlet of the water pump through a spiral hose. The water pump draws seawater through the spiral hose, the water distribution piston, the water guide column and the water outlet joint and presses it into the designated filter membrane box.

3. The elevator-type multi-channel eDNA automatic fixed-point enrichment device according to claim 1, characterized in that: The filter chamber is provided with no less than 40 filter membrane boxes, each of which is evenly distributed around the water guide column. The side wall of the piston inside the water guide column is provided with a water guide ring groove. The piston is connected to the water outlet of the water pump through a hose. The piston can controllably switch any group of two filter membrane boxes to collect and filter seawater samples at the same time, and a filter membrane is installed on the upper and lower surfaces of each filter membrane box, respectively, so that four filter membranes at the same point can filter microorganisms in the seawater at the same time.

4. The elevator-type multi-channel eDNA automatic fixed-point enrichment device according to claim 3 is characterized in that: The filter membrane box adopts a design of installing the filter membrane with upper and lower covers, and water enters from the side. A metal outer mesh plate, a metal inner mesh plate and filter paper are arranged in the filter membrane box. Each filter membrane box can be installed with filter membranes of different pore sizes to collect different populations of microorganisms in seawater from different regions.

5. The elevator-type multi-channel eDNA automatic fixed-point enrichment device according to claim 1, characterized in that: The filter cabin base is connected to the watertight cabin adapter, and a filter is installed above the base. The filters are divided into two groups, one group is used for filtering seawater exchanged when the pressure inside and outside the filter cabin is balanced, and the other group is connected in parallel for primary filtration of sampled seawater.

6. The elevator-type multi-channel eDNA automatic fixed-point enrichment device according to claim 1, characterized in that: The filter chamber outer cylinder is used to isolate the interior of the filter chamber from the external space, prevent large particles of impurities and the like from entering the interior of the filter chamber, and ensure the normal operation of the piston and the lead screw.

7. The elevator-type multi-channel eDNA automatic fixed-point enrichment device according to claim 1, characterized in that: Six filters are installed on the base of the filter chamber, three of which are used for seawater exchange when the pressure inside and outside the filter chamber is balanced, and the other three filters are connected in parallel for primary filtration of sampled seawater to avoid stagnation or blockage of water pumps and pipelines.

8. The elevator-type multi-channel eDNA automatic fixed-point enrichment device according to claim 1, characterized in that: The water pump adopts a vane pump, which has a large flow rate and can tolerate larger particles of impurities. The water pump consists of a pump body, an inner rotor, a stator, a pump cover and a vane. The vane is pressed against the eccentric stator by centrifugal force to achieve the extraction and injection of seawater.

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