Deep sea plume particulate matter multi-stage filtering and sampling device and investigation equipment

Abstract

The invention discloses a deep-sea plume particulate matter multi-stage filtering and sampling device and investigation equipment, and relates to the technical field of investigation and evaluation of environmental influences such as deep-sea mining, and the device comprises an assembly frame, a power supply structure, a pump assembly and at least two suction filtration filter cartridges. The assembly frame is provided with an assembly cavity, and the power supply structure is installed in the assembly cavity and can provide electric energy; the pump assembly is connected with the power supply structure and can extract seawater; the at least two suction filtration cartridges are connected with the pump assembly, and the suction filtration cartridges can filter seawater; each suction filtration cartridge is provided with at least two layers of filter membranes, the suction filtration parameters of different suction filtration cartridges are different, and the filtration parameters of different filter membranes in the suction filtration cartridges are different. The system can realize graded collection of particulate matters with different particle sizes, has the collection capability of double filter barrels, improves the collection efficiency of deep-sea plume particulate matters, and provides more comprehensive and accurate data support for investigation and evaluation research of environmental influences such as deep-sea mining and the like.

Description

Technical Field

[0001] The present application relates to the technical field of environmental impact investigation and assessment such as deep-sea mining, and in particular to a multi-stage filtration sampling device and investigation equipment for deep-sea plume particles. Background Art

[0002] The deep sea contains important strategic resources, including polymetallic nodules, which contain key raw materials for scientific and technological development such as nickel, copper, cobalt and manganese, as well as rare earth elements. Due to concerns about the future access to strategic raw materials for high-tech industries, countries around the world have become interested in the exploitation of deep-sea mineral resources as a potential alternative to terrestrial mining. However, deep-sea mining has technical and environmental challenges, and the International Seabed Authority is developing regulations to guide deep-sea mining and its environmental response plans. Deep-sea mining may have environmental impacts, and one of the main issues is the ecological risk of deep-sea mining plumes: during the collection of seabed nodules, plumes containing particulate matter are generated on the deep seabed and in the ocean water. This plume is believed to be able to spread vertically to a height of hundreds of meters and horizontally to several kilometers. The ecological risks it generates include blocking the feeding organs of predators, biological toxicity, and burying organisms, but research is insufficient.

[0003] However, existing monitoring methods have limitations, such as low sampling efficiency, inability to accurately sample, and the risk of clogging of sampling equipment, which restricts scientific research on the ecological and environmental impacts of deep-sea mining plumes. Summary of the invention

[0004] The present application provides a deep-sea plume particle multi-stage filtration sampling device and investigation equipment, which can realize the graded collection of particles of different particle sizes, providing more comprehensive and accurate data support for subsequent research.

[0005] In a first aspect, the present application provides a deep-sea plume particulate matter multi-stage filtration sampling device for deep-sea sampling, wherein the deep-sea plume particulate matter multi-stage filtration sampling device comprises an assembly frame, a power supply structure, a pump assembly and at least two suction filter cartridges.

[0006] The assembly frame has an assembly cavity, a power supply structure installed in the assembly cavity, and the power supply structure can provide electrical energy; a pump assembly is connected to the power supply structure, and the pump assembly can extract seawater; at least two suction filter cartridges are connected to the pump assembly, and the suction filter cartridges can filter the seawater; Each of the suction filtration cartridges has at least two layers of filter membranes, different suction filtration cartridges have different filtration parameters, and different filter membranes in the suction filtration cartridges have different filtration parameters.

[0007] The suction filter cartridge is the core component of the sampling device, responsible for filtering the extracted seawater to obtain the particles or microorganisms therein. Each suction filter cartridge is designed with at least two layers of filter membranes, and the pore sizes and filtration parameters of different filter membranes are different to meet the filtering requirements of particles of different particle sizes. At the same time, the filtration parameters between different suction filter cartridges can also be different. This design can not only effectively prevent blockage due to large particles, but also improve sampling efficiency and achieve the purpose of graded sampling. Of course, the filtration parameters of different suction filter cartridges can also be set to the same, which can be used as a comparative reference.

[0008] In practical applications, different numbers of suction filter cartridges can be set according to research needs, and multiple layers of filter membranes can be placed in each suction filter cartridge. For example, two suction filter cartridges can be set, each with three layers of filter membranes, and the pore size of each layer of filter membrane can be flexibly adjusted according to the particle size distribution and concentration of particulate matter in the seawater sample. Such a design can not only effectively prevent filter membrane clogging, but also realize the graded collection of particles of different particle sizes, providing more comprehensive and accurate data support for subsequent research.

[0009] In some examples, the deep-sea plume particulate multi-stage filtration sampling device further includes a detection component, wherein the detection component includes: A flow meter connected to the pump assembly, the flow meter is used to measure the filtration flow of the suction filter cartridge, at least two suction filter cartridges share one flow meter, or each suction filter cartridge has a channel for the flow meter; At least one seawater monitor is installed on the assembly frame, and the seawater monitor is used to monitor seawater parameters at a sampling location.

[0010] The flowmeter is an indispensable part of the deep-sea plume particulate multi-stage filtration sampling device. It is connected to the pump assembly and together they constitute the core of the sampling system. The main function of the flowmeter is to accurately measure the filtration flow of the suction filter cartridge to ensure that the flow during the sampling process is stable and controllable. In actual applications, the configuration of the flowmeter varies depending on the sampling requirements. For example, multiple suction filter cartridges will share a flowmeter, and the filtration flow of each filter cartridge will be calculated based on the measurement data of the flowmeter. In some more sophisticated sampling tasks, each suction filter cartridge can be equipped with a flowmeter with an independent channel to more accurately grasp the filtration conditions of each filter cartridge.

[0011] In addition to flow meters, seawater monitors are also an important part of the deep-sea plume particle multi-stage filtration sampling device. These monitors are usually installed on an assembly frame and can monitor the seawater parameters at the sampling location in real time. These parameters include but are not limited to seawater turbidity, dissolved oxygen content, temperature, and salinity. By monitoring these parameters, researchers can have a more comprehensive understanding of the characteristics of the sampling environment and then analyze the source, distribution, and migration patterns of deep-sea particles.

[0012] In some examples, the pump assembly includes a pump body, a drive member, and at least one valve, the pump body is connected to the drive member, the drive member is connected to the power supply structure, the drive member can provide power to the pump body, the valve is directly or indirectly connected to the pump body, and the valve can control the connection path of the pump body.

[0013] As the core part of the pump assembly, the pump body is responsible for transporting fluid from one place to another. The pump body is usually made of some durable materials to adapt to the working environment and transmission requirements of different fluids. The pump body usually has one or more inlets and outlets so that the fluid can enter and flow out smoothly.

[0014] Connected to the pump body is the drive. The drive is the power source of the pump assembly, which can provide the required rotation or reciprocating motion for the pump body. The drive is usually connected to the power structure and provides power through electricity or other energy forms. In practical applications, the selection and setting of the drive needs to be comprehensively considered based on factors such as the type of pump body, workload, and working environment.

[0015] In addition to the pump body and drive, valves are also an integral part of the pump assembly. The valve is directly or indirectly connected to the pump body and can control the connection path of the pump body. The function of the valve is to adjust the flow, pressure and direction of the fluid to meet different process requirements. For example, in some cases, it may be necessary to control the flow of the fluid by adjusting the valve to achieve specific flow parameters.

[0016] In some examples, when two suction filtration cartridges are provided, the valve includes at least one two-position three-way valve, and the two-position three-way valve simultaneously connects the two suction filtration cartridges.

[0017] The valve at this time usually includes at least one two-position three-way valve. This two-position three-way valve plays the role of switching the passage in the deep-sea plume particle multi-stage filtration sampling device. It can not only connect two suction filter cartridges at the same time, but also realize flexible control of the two suction filter cartridges through its special structural design. A multi-way valve can also be set as needed, and the connection method of the multi-way valve can be set as needed.

[0018] The two-position three-way valve is usually in the form of a solenoid valve, which can be remotely controlled by a control device. By accurately controlling the switch state of the solenoid valve, the operator (or controlling it according to a predetermined program) can easily control the working state of the suction filter cartridge, thereby achieving efficient and accurate sampling of deep-sea particles.

[0019] In some examples, the deep-sea plume particulate multi-stage filtration sampling device also includes a control device, which is connected to the pump assembly and can control the working mode of the pump assembly.

[0020] The control device is closely connected to the pump assembly, so that the sampling device can accurately perform various operations. The control device can have a control function, and the control device can flexibly adjust the working mode of the pump assembly. These working modes include but are not limited to the first filtration mode, the second filtration mode, and the fixed mode.

[0021] In the first filtration mode, the pump assembly drives the fluid through the first filtration cartridge to filter the particles. During this process, the control device will accurately control the flow rate and working time of the pump assembly to ensure the best filtration effect. At the same time, the control device will also monitor the blockage of the filtration cartridge in real time. Once blockage is found, the working state of the pump assembly will be automatically adjusted to prevent damage to the equipment.

[0022] In some examples, the power structure is provided with a charging device, and the charging device can be connected to an external power source and charged; Alternatively, the charging device includes at least one of a generator and a photovoltaic structure.

[0023] In some examples of deep-sea plume particulate multi-stage filtration sampling devices, a charging device can be set on the power supply structure. This setting can meet the energy needs of the device in the deep-sea environment and ensure the smooth progress of the sampling work. The charging device has the function of connecting to an external power supply and charging, so that the device can be fully charged before deep-sea operations, providing sufficient energy for subsequent wireless operations. The charging device can be set with sufficient waterproof performance to meet the effect of no leakage during deep-sea operations.

[0024] In deep-sea environments, generators can use natural resources such as water flow to generate electricity, thereby realizing the utilization of the environment. Another common charging device is the photovoltaic structure. Photovoltaic structures use solar energy for charging, which has the advantages of environmental protection and energy saving. Before deep-sea operations, photovoltaic structures can also be used to generate electricity and charge the power structure through sufficient light. In deep-sea environments, although sunlight cannot directly shine on the device, photovoltaic structures can use special design and layout to charge using weak light in the deep sea, providing stable power support for the device.

[0025] Both the generator and the photovoltaic structure provide reliable power for the deep-sea plume particle multi-stage filtration sampling device. By charging in advance, the device can be operated wirelessly in the deep-sea environment, thus avoiding the constraints and restrictions of cables and improving the flexibility and efficiency of sampling work.

[0026] In some examples, the deep-sea plume particulate multi-stage filtration sampling device further includes a fixed liquid barrel, the fixed liquid barrel is connected to the suction filter cartridge, and a fixed liquid is stored in the fixed liquid barrel; After the suction filter cartridge has completed sampling, the pump assembly extracts the fixing liquid in the fixing liquid barrel and transports it to the suction filter cartridge to fix the sample on the filter membrane.

[0027] The fixative liquid barrel is connected to the suction filter cartridge, and a special fixative liquid is stored inside the barrel. This fixative liquid plays an important role in the sampling process.

[0028] When the deep-sea plume particle multi-stage filtration sampling device is sampling, the suction filter cartridge will first play its filtering role and intercept the particles in the seawater on the filter membrane. When the sampling is completed, the pump assembly will start to extract the fixative in the fixative barrel. These fixatives are transported by the pump assembly and accurately introduced into the suction filter cartridge, where they are fully in contact with the sample on the filter membrane.

[0029] The main function of the fixative is to fix the sample on the filter membrane to prevent it from falling off or deforming during subsequent processing or transportation. This fixative usually has specific chemical properties and can react with particulate matter to form stable compounds, thereby ensuring the integrity and accuracy of the sample.

[0030] In some examples, the filter membrane is enclosed in the suction filter cartridge, and the filtration size of the filter membrane decreases in the direction from the water inlet to the water outlet of the suction filter cartridge.

[0031] Water can enter the filter cartridge from the water inlet, and after being filtered by the filter membrane, it flows out from the water outlet. In this process, the filter membrane plays an important role. The filter membrane inside the suction filter cartridge is not a single specification, but a variety of filter membranes with different filtering parameters. From the water inlet to the water outlet, the filter size of the filter membrane gradually decreases.

[0032] Different substances have different solubility, particle size and other characteristics in water, so filter membranes with different filtration parameters are required for targeted filtration sampling. By arranging multiple filter membranes in descending order of filtration size, different substances in the water can be effectively separated, thereby achieving more accurate and comprehensive sampling.

[0033] In some examples, two suction filtration cartridges are provided, and three filter membranes are arranged at intervals in each suction filtration cartridge.

[0034] The suction filter cartridges of the present application do not exist alone, but can appear in pairs, or even more, so as to more accurately collect and analyze various particulate matter. In a specific example, two suction filter cartridges are set, and three filter membranes are cleverly configured inside each filter cartridge at intervals. Such a design not only increases the filtration area and improves the filtration efficiency, but also makes the entire filtration process more refined and reliable.

[0035] The two filtration cartridges are not exactly the same, and their filtration parameters are different. These parameters include filtration speed, filtration pressure, etc. These parameters directly determine the retention effect of the filter membrane on particles of different particle sizes. The filtration parameters of different filter membranes in the filter cartridge are also different. This is to deal with particles of different sizes and properties, so as to achieve more accurate graded sampling.

[0036] In a second aspect, the present application provides an investigation device, comprising the above-mentioned deep-sea plume particulate matter multi-stage filtration sampling device; and a device body, the device body having a storage cavity, and the deep-sea plume particulate matter multi-stage filtration sampling device can be placed in the storage cavity.

[0037] In the depths of the ocean, there are countless unknown mysteries and rich resources. In order to better understand the deep-sea environment, the deep-sea plume particle multi-stage filtration sampling device of the present application can be mounted on the above-mentioned survey equipment. This device can accurately collect particle samples in the deep sea, and through multi-stage filtration technology, effectively separate particles of different particle sizes, providing valuable materials for subsequent experimental research. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the examples or prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 This is a schematic diagram of the structure of a multi-stage filtration sampling device for deep-sea plume particles in an example of the present application; Figure 2 This is a schematic structural diagram of a deep-sea plume particulate multi-stage filtration sampling device from another perspective in an example of the present application; Figure 3 This is a schematic cross-sectional view of the structure of a multi-stage filtration sampling device for deep-sea plume particulate matter in an example of the present application.

[0040] Reference numerals: 100. Assembly frame; 110. Upper frame; 120. Lower frame; 130. Left frame; 140. Right frame; 200. Power supply structure; 300. Pump assembly; 310. Pump body; 320. Driving member; 330. Valve; 331. Two-position three-way valve; 332. Multi-way valve; 400. Filter cartridge; 410. Filter membrane; 500. Detection assembly; 600. Pressure compensator. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific examples described here are only used to explain the present application and are not used to limit the present application.

[0042] To solve the above technical problems, please refer to Figures 1 to 3 As shown, the first aspect of the present application proposes a deep-sea plume particulate matter multi-stage filtration sampling device, which can realize the graded collection of particles of different particle sizes and provide more comprehensive and accurate data support for subsequent research.

[0043] Reference Figures 1 to 3 In some examples, a deep-sea plume particulate matter multi-stage filtration sampling device is used for deep-sea sampling. The deep-sea plume particulate matter multi-stage filtration sampling device includes an assembly frame 100, a power structure 200, a pump assembly 300 and at least two suction filter cartridges 400.

[0044] The assembly frame 100 has an assembly cavity, a power supply structure 200, which is installed in the assembly cavity, and the power supply structure 200 can provide electric energy; a pump assembly 300 is connected to the power supply structure 200, and the pump assembly 300 can extract seawater; at least two suction filter cartridges 400 are connected to the pump assembly 300, and the suction filter cartridges 400 can filter seawater; Each suction filtration cartridge 400 has at least two layers of filter membranes 410 , and different suction filtration cartridges 400 have different filtration parameters, and different filter membranes 410 in the suction filtration cartridge 400 have different filtration parameters.

[0045] The deep-sea plume particle multi-stage filtration sampling device is an advanced device dedicated to deep-sea environment sampling. With its high efficiency and precision, it plays a vital role in marine scientific research. The device is mainly composed of core components such as an assembly frame 100, a power structure 200, a pump assembly 300, and at least two suction filter cartridges 400, and each part plays an indispensable role.

[0046] The assembly frame 100 is the foundation of the entire device. Its design fully considers the special conditions of the deep-sea environment and ensures the stability of the device under extreme conditions such as high pressure and low temperature. The power supply structure 200 installed in the assembly cavity provides a stable power supply for the device and ensures the normal operation of each component.

[0047] The pump assembly 300 is the power source of the sampling device, and its performance directly affects the sampling efficiency. By connecting with the power structure 200, the pump assembly 300 can extract seawater strongly and stably, providing sufficient samples for subsequent filtering work.

[0048] The suction filter cartridge 400 is the core component in the sampling device, which is responsible for filtering the extracted seawater to obtain particulate matter or microorganisms therein. Each suction filter cartridge 400 is designed with at least two layers of filter membranes 410, and the pore sizes and filtration parameters of different filter membranes 410 are different to meet the filtering requirements of particles of different particle sizes. At the same time, the suction filtration parameters between different suction filter cartridges 400 can also be different. This design can effectively prevent blockage due to large particles, and can also improve sampling efficiency and achieve the purpose of graded sampling. Of course, the suction filtration parameters of different suction filter cartridges 400 can also be set to be the same, which can be used as a comparative reference.

[0049] In practical applications, different numbers of suction filter cartridges 400 can be set according to research needs, and multiple layers of filter membranes 410 can be placed in each suction filter cartridge 400. For example, two suction filter cartridges 400 can be set, and three layers of filter membranes 410 can be placed in each suction filter cartridge 400. According to the particle size distribution and concentration of particulate matter in the seawater sample, the pore size of each layer of filter membrane 410 can be flexibly adjusted. Such a design can not only effectively prevent the filter membrane 410 from being blocked, but also realize the graded collection of particles of different particle sizes, providing more comprehensive and accurate data support for subsequent research.

[0050] During the sampling process, when the first suction filter cartridge 400 completes filtering, it can automatically switch to the second suction filter cartridge 400 to continue working. After all suction filter cartridges 400 have completed filtering, the samples in the suction filter cartridges 400 can be fixed and protected by sucking a fixing liquid (protective liquid, used to protect the stability of the sample and not easily disturbed). Subsequently, the device will carry the sample up to the sea surface for sample collection and subsequent research.

[0051] By analyzing and studying the collected deep-sea particles, we can evaluate the content, distribution range, physical and chemical composition of sediment particles suspended in the plume, and thus understand the material cycle and energy flow process of the deep-sea environment. At the same time, by studying the small benthic organisms, microorganisms and other biological communities entrained in the particles, we can also reveal the structural and functional changes of the deep-sea ecosystem, and provide a scientific basis for the protection and utilization of deep-sea biological resources.

[0052] The deep-sea plume particle multi-stage filtration sampling device has broad application prospects in the field of marine scientific research due to its high efficiency, accurate sampling performance and flexible configuration.

[0053] The assembly frame 100 of the deep-sea plume particulate multi-stage filtration sampling device is the supporting body of the whole set of equipment, which can protect other functional components. The material selection of the assembly frame 100 is directly related to the stability and durability of the sampling work. Considering the particularity of the deep-sea environment, such as high pressure, low temperature, high salinity and strong corrosiveness, the material of the assembly frame 100 is very important.

[0054] In deep sea environment, titanium alloy, as an excellent engineering material, is selected as the assembly frame 100 material of the deep sea plume particle multi-stage filtration sampling device due to its excellent strength, good corrosion resistance and lightweight characteristics. The titanium alloy outer frame can not only withstand the strong water pressure of the deep sea, but also maintain the stability of the structure for a long time in the environment of seawater corrosion.

[0055] A series of through-hole structures can be set on the titanium alloy outer frame. These through-holes not only facilitate the staff to fix and transfer during assembly and disassembly, but also provide sufficient flexibility for the sampling device to adapt to the needs of different seabed terrains. At the same time, this design also allows the titanium alloy outer frame to be quickly hung, facilitating the rapid lowering and rapid recovery of the entire equipment, greatly improving the efficiency of sampling work.

[0056] The assembly frame 100 of the deep-sea plume particulate multi-stage filtration sampling device adopts a titanium alloy outer frame, which not only fully utilizes the excellent performance of titanium alloy, but also improves the efficiency and flexibility of sampling work through a sophisticated through-hole structure design.

[0057] The assembly frame 100 may include an upper frame 110, a lower frame 120, a left frame 130, and a right frame 140 that are connected to each other. The above-mentioned up, down, left, and right are all relative directions and do not represent absolute up and down. Among them, the suction filter cartridge 400 is assembled on the side of the upper frame 110 away from the lower frame 120, and the remaining components can be assembled between the upper frame 110 and the lower frame 120. The corresponding assembly positions are set according to specific needs. The lower frame 120 begins to have multiple through holes.

[0058] Reference Figures 1 to 3 In some examples, the deep-sea plume particulate multi-stage filtration sampling device further includes a detection component 500, and the detection component 500 includes: A flow meter connected to the pump assembly 300, the flow meter is used to measure the filtration flow of the suction filter cartridge 400, at least two suction filter cartridges 400 share one flow meter, or each suction filter cartridge 400 has a flow meter with a channel; At least one seawater monitor is installed on the assembly frame 100, and the seawater monitor is used to monitor the seawater parameters at the sampling location.

[0059] The deep-sea plume particle multi-stage filtration sampling device is also equipped with a detection component 500 to ensure the accuracy of the sampling process and the reliability of the data. These detection components 500 mainly include two parts: a flow meter and a seawater monitor.

[0060] The flowmeter is an indispensable part of the deep-sea plume particulate multi-stage filtration sampling device. It is connected to the pump assembly 300 and together constitutes the core of the sampling system. The main function of the flowmeter is to accurately measure the filtration flow of the suction filter cartridge 400 to ensure that the flow during the sampling process is stable and controllable. In actual applications, the configuration of the flowmeter varies depending on the sampling requirements. For example, multiple suction filter cartridges 400 will share a flowmeter, and the filtration flow of each filter cartridge will be calculated based on the measurement data of the flowmeter. In some more sophisticated sampling tasks, each suction filter cartridge 400 may be equipped with a flowmeter with an independent channel to more accurately grasp the filtration conditions of each filter cartridge.

[0061] In addition to the flow meter, seawater monitors are also an important component of the deep-sea plume particle multi-stage filtration sampling device. These monitors are usually installed on the assembly frame 100 and can monitor the seawater parameters at the sampling location in real time. These parameters include but are not limited to the turbidity, dissolved oxygen content, temperature and salinity of seawater. By monitoring these parameters, researchers can have a more comprehensive understanding of the characteristics of the sampling environment and then analyze the source, distribution and migration patterns of deep-sea particles.

[0062] In practical applications, there are many types and configurations of seawater monitors. For example, some monitors use optical principles to measure the turbidity of seawater, and measure the transmittance of light in seawater to infer the concentration of particulate matter. Dissolved oxygen may be measured using electrochemical sensors, which measure the electrochemical activity of oxygen in seawater to obtain the dissolved oxygen content. Temperature and salinity measurements are usually completed using instruments such as thermistors and salinometers.

[0063] Furthermore, flow meters and seawater monitors can add remote control and data transmission functions as needed, and researchers can view sampling data and equipment status in real time through the remote monitoring system, greatly improving work efficiency and sampling accuracy.

[0064] Reference Figures 1 to 3 In some examples, the pump assembly 300 includes a pump body 310, a driving member 320 and at least one valve 330. The pump body 310 is connected to the driving member 320, and the driving member 320 is connected to the power structure 200. The driving member 320 can provide power for the pump body 310. The valve 330 is directly or indirectly connected to the pump body 310, and the valve 330 can control the connection path of the pump body 310.

[0065] As an important fluid transmission device, the pump assembly 300 generally includes a pump body 310, a driving member 320, and at least one valve 330. These components perform their respective functions and work together to achieve effective transmission and control of the fluid.

[0066] The pump body 310 is the core part of the pump assembly 300 and is responsible for transporting the fluid from one place to another. The pump body 310 is usually made of some durable materials to adapt to the working environment and transmission requirements of different fluids. The pump body 310 usually has one or more inlets and outlets so that the fluid can enter and flow out smoothly.

[0067] Connected to the pump body 310 is a driving member 320. The driving member 320 is the power source of the pump assembly 300 and can provide the required rotation or reciprocating motion for the pump body 310. The driving member 320 is usually connected to the power supply structure 200 and is powered by electricity or other energy forms. In practical applications, the selection and setting of the driving member 320 needs to be comprehensively considered according to factors such as the type of the pump body 310, the workload, and the working environment.

[0068] In addition to the pump body 310 and the drive member 320, the valve 330 is also an integral part of the pump assembly 300. The valve 330 is directly or indirectly connected to the pump body 310 and can control the connection path of the pump body 310. The valve 330 is used to adjust the flow rate, pressure and direction of the fluid to meet different process requirements. For example, in some cases, it may be necessary to control the flow rate of the fluid by adjusting the valve 330 to achieve specific flow parameters.

[0069] For example, the pump assembly 300 is widely used in the delivery and circulation of various fluids. By selecting a suitable pump body 310, a driving member 320 and a valve 330, stable transmission of different fluids can be achieved, and the safety and efficiency of the production process can be ensured.

[0070] Furthermore, the pump assembly 300 may be equipped with a corresponding intelligent control system, thereby enabling accurate control of the pump body 310 and the valve 330. This intelligent design not only improves the working efficiency and reliability of the pump assembly 300, but also reduces energy consumption and maintenance costs.

[0071] Reference Figures 1 to 3 In some examples, when two suction filter cartridges 400 are provided in the deep-sea plume particulate multi-stage filtration sampling device, the valve 330 includes at least one two-position three-way valve 331, and the two-position three-way valve 331 is connected to the two suction filter cartridges 400 at the same time. The two-position three-way valve 331 is a solenoid valve that can be controlled by a control device. The two suction filter cartridges 400 can perform suction sampling in sequence.

[0072] When two suction filter cartridges 400 are provided in the deep-sea plume particulate multi-stage filtration sampling device, the setting of the valve 330 in the device needs to be adaptively changed.

[0073] The valve 330 at this time usually includes at least one two-position three-way valve 331. This two-position three-way valve 331 plays the role of switching the passage in the deep-sea plume particulate multi-stage filtration sampling device. Not only can it connect two suction filter cartridges 400 at the same time, but it can also achieve flexible control of the two suction filter cartridges 400 through its special structural design. A multi-way valve 332 can also be set as needed, and the connection method of the multi-way valve 332 is set as needed.

[0074] The two-position three-way valve 331 is usually in the form of a solenoid valve, which can be remotely controlled by a control device. By accurately controlling the switch state of the solenoid valve, the operator (or controlling according to a predetermined program) can conveniently control the working state of the suction filter cartridge 400, thereby achieving efficient and accurate sampling of deep-sea particles.

[0075] In practical applications, the two suction filter cartridges 400 can perform suction sampling in succession. This design not only improves the sampling efficiency, but also makes the collection of deep-sea particles more comprehensive and accurate. When the first suction filter cartridge 400 completes sampling, the operator can control the solenoid valve to start the second suction filter cartridge 400. In this way, the two suction filter cartridges 400 work alternately, which greatly improves the continuity and stability of the sampling work.

[0076] In addition, the design of the deep-sea plume particle multi-stage filtration sampling device also fully considers various factors in the sampling process. For example, in order to ensure the accuracy of the sampling results, the device is usually equipped with precise measuring instruments to monitor and record various parameters in the sampling process in real time. At the same time, the device will also use special materials and processes to ensure its stability and durability in the extreme environment of the deep sea.

[0077] In some examples, the deep-sea plume particulate multi-stage filtration sampling device further includes a control device, which is connected to the pump assembly 300 and can control the working mode of the pump assembly 300. The control device can be set in the power supply structure 200, or the control device can be set independently as needed.

[0078] The control device is closely connected to the pump assembly 300, so that the sampling device can accurately perform various operations. The control device can have a control function, and the control device can flexibly adjust the working mode of the pump assembly 300. These working modes include but are not limited to the first suction and filtration mode, the second suction and filtration mode, and the fixed mode.

[0079] In the first suction filtration mode, the pump assembly 300 drives the fluid through the first suction filter cartridge 400 to filter the particles. During this process, the control device will accurately control the flow rate and working time of the pump assembly 300 to ensure that the filtration effect reaches the best state. At the same time, the control device will also monitor the blockage of the suction filter cartridge 400 in real time. Once blockage is found, the working state of the pump assembly 300 will be automatically adjusted to prevent damage to the equipment.

[0080] When the first suction filtration mode is completed, the control device will switch to the second suction filtration mode. In this mode, the pump assembly 300 will drive the fluid to switch to pass through the second suction filter cartridge 400 to filter the particulate matter for the second time. Compared with the first suction filtration mode, more refined filtration can be performed as needed, or the same filtering conditions can be used for comparative testing. When more refined filtration is required, the second suction filtration mode has higher requirements on the pump assembly 300 and requires more precise flow rate and time control. The control device ensures that the pump assembly 300 can work stably and efficiently in the second suction filtration mode through intelligent algorithms and precise control strategies.

[0081] In addition to the suction filtration mode, the control device also has the function of a fixed mode. In the fixed mode, the pump assembly 300 will stop the suction filtration work on the suction filtration cartridge 400, and the control device will start the program of fixing the sample with a fixing liquid. By injecting a fixing liquid into the suction filtration cartridge 400, the collected particles are fixed on the filter membrane 410 in the suction filtration cartridge 400 by using the fixing liquid, so as to facilitate subsequent analysis and research.

[0082] The deep-sea plume particle multi-stage filtration sampling device can also have a wealth of extended functions. For example, the control device can communicate with external devices to achieve remote monitoring and control; at the same time, it can also record various data during the sampling process, such as flow rate, time, temperature, etc., providing an important basis for subsequent data analysis.

[0083] A cabin may be provided in the power structure 200, and the deep-sea plume particulate matter multi-stage filtration sampling device also includes a pressure compensator 600, such as a pressure compensating oil bag, which is connected to the cabin through a pipeline, and the cabin and the pressure compensating oil bag are filled with oil; when the cabin sinks toward the sea surface, as the depth increases, the pressure compensating oil bag is affected by the seawater pressure, and the oil in the pressure compensating oil bag is pressed into the cabin, thereby balancing the seawater pressure outside the cabin.

[0084] In some examples, a charging device is provided on the power structure 200, and the charging device can be connected to an external power source and charged; Alternatively, the charging device includes at least one of a generator and a photovoltaic structure. The deep-sea plume particulate multi-stage filtration sampling device can be charged in advance before diving so that the device can be operated wirelessly.

[0085] In some examples of deep-sea plume particulate multi-stage filtration sampling devices, a charging device can be provided on the power structure 200. This setting can meet the energy needs of the device in a deep-sea environment and ensure the smooth progress of the sampling work. The charging device has the function of connecting to an external power source and charging, so that the device can be fully charged before deep-sea operations to provide sufficient energy for subsequent wireless operations. The charging device can be provided with sufficient waterproof performance to meet the effect of no leakage during deep-sea operations.

[0086] The charging device can be charged through an external power source, which is not only convenient and fast, but also ensures the safety and reliability of the charging process. In addition, the charging device can also have an intelligent charging management function, which can automatically adjust the charging speed and charging amount according to the power status of the device, thereby avoiding overcharging or undercharging.

[0087] In the deep-sea plume particulate multi-stage filtration sampling device, the types of charging devices can also be various. One common charging device is a generator. The generator provides power support for the device by converting mechanical energy into electrical energy. Before deep-sea operations, the generator can also be charged by adding fuel.

[0088] In a deep-sea environment, the generator can use natural resources such as water flow to generate electricity, thereby realizing the utilization of the environment. Another common charging device is a photovoltaic structure. The photovoltaic structure uses solar energy for charging, which has the advantages of environmental protection and energy saving. Before deep-sea operations, the photovoltaic structure can also be used to generate electricity and charge the power structure 200 through sufficient light. In a deep-sea environment, although sunlight cannot directly shine on the device, the photovoltaic structure can be specially designed and laid out to use the weak light in the deep sea for charging, providing stable power support for the device.

[0089] Both the generator and the photovoltaic structure provide reliable power for the deep-sea plume particle multi-stage filtration sampling device. By charging in advance, the device can be operated wirelessly in the deep-sea environment, thus avoiding the constraints and restrictions of cables and improving the flexibility and efficiency of sampling work.

[0090] A wireless communication component can also be provided on the deep-sea plume particle multi-stage filtration sampling device to facilitate wireless control of the deep-sea plume particle multi-stage filtration sampling device. A wireless locator can also be provided on the deep-sea plume particle multi-stage filtration sampling device, and the deep-sea plume particle multi-stage filtration sampling device can be located by the wireless locator after it is offset by the ocean current.

[0091] In order to further improve the performance and convenience of the device, it is possible to consider adding wireless communication components and wireless locators to the device.

[0092] The addition of wireless communication components can greatly improve the convenience of operation of the deep-sea plume particle multi-stage filtration sampling device. Through the wireless communication components, researchers can remotely control the device wirelessly without having to dive into the deep sea to perform manual operations. This not only reduces the work risks of researchers, but also improves work efficiency. In practical applications, researchers can use wireless communication components to adjust the sampling frequency, sampling depth and other parameters of the device in real time according to research needs to meet different research needs.

[0093] The wireless communication component can also realize real-time transmission and sharing of data. After collecting deep-sea particle samples, the device can transmit the data to the ground receiving station through the wireless communication component for scientific researchers to analyze and study. This not only ensures the real-time and accuracy of the data, but also enables scientific researchers to quickly grasp the changing trends of the deep-sea environment, providing strong support for the formulation of scientific marine protection policies.

[0094] The setting of wireless locators is also of great significance for the deep-sea plume particulate multi-stage filtration sampling device. In the deep-sea environment, the ocean currents are complex and changeable, and the device is prone to deviation during the collection process. By setting up a wireless locator, researchers can grasp the specific location of the device in real time to ensure the accuracy and reliability of the sampling work. Once the device is offset, researchers can quickly locate the device through the wireless locator and make necessary adjustments or recovery to avoid unnecessary losses.

[0095] Wireless locators can also be combined with advanced technologies such as geographic information systems (GIS) to achieve spatial analysis and visualization of sampling data. Researchers can use these technologies to conduct in-depth research on the distribution and migration of deep-sea particles, providing a more scientific basis for marine ecological protection and resource development.

[0096] In some examples, the deep-sea plume particulate multi-stage filtration sampling device further includes a fixed liquid barrel, the fixed liquid barrel is connected to the suction filter cartridge 400, and the fixed liquid barrel stores a fixed liquid; After the sampling of the suction filter cartridge 400 is completed, the pump assembly 300 extracts the fixing liquid in the fixing liquid barrel and transports it to the suction filter cartridge 400 to fix the sample on the filter membrane 410 .

[0097] The fixing liquid barrel is connected to the suction filter cartridge 400, and a special fixing liquid is stored inside the fixing liquid barrel. This fixing liquid plays an important role in the sampling process.

[0098] When the deep-sea plume particle multi-stage filtration sampling device performs sampling, the suction filter cartridge 400 first performs its filtering function to intercept particles in the seawater on the filter membrane 410. When the sampling is completed, the pump assembly 300 starts to extract the fixing liquid in the fixing liquid barrel. The fixing liquid is accurately introduced into the suction filter cartridge 400 through the conveyance of the pump assembly 300, and is fully in contact with the sample on the filter membrane 410.

[0099] The main function of the fixative is to fix the sample on the filter membrane 410 to prevent it from falling off or deforming during subsequent processing or transportation. The fixative usually has specific chemical properties and can react with particulate matter to form a stable compound, thereby ensuring the integrity and accuracy of the sample.

[0100] The design of the fixative barrel also takes into full consideration practicality and convenience. The fixative barrel usually has a large capacity and can store enough fixative to meet the needs of long-term sampling. At the same time, the sealing performance of the fixative barrel is also strictly tested to ensure that there will be no leakage or contamination during the sampling process.

[0101] By introducing the fixed liquid barrel component, the deep-sea plume particle multi-stage filtration sampling device has significantly improved sampling efficiency and accuracy. The fixed liquid barrel can not only efficiently intercept particles in seawater, but also ensure the stability and reliability of the sample through the action of the fixed liquid. This device has broad application prospects in the fields of marine scientific research, environmental monitoring, etc., providing researchers with a more accurate and reliable sampling method.

[0102] In practical applications, the deep-sea plume particle multi-stage filtration sampling device can also be customized and optimized according to specific needs. For example, the appropriate filter membrane 410 material and pore size can be selected according to different sampling environments and target particles; the type and concentration of the fixative can also be adjusted as needed to achieve the best fixation effect. These customized designs enable the deep-sea plume particle multi-stage filtration sampling device to better adapt to various complex marine environments and provide more comprehensive and accurate data support for scientific researchers.

[0103] In some examples, the filter membrane 410 is enclosed in the suction filter cartridge 400, and the filter size of the filter membrane 410 decreases from the water inlet to the water outlet of the suction filter cartridge 400. Different filter membranes 410 in the suction filter cartridge 400 have different filtering parameters to perform filtering sampling of different substances.

[0104] The suction filter cartridge 400 usually has two ports, a water inlet and a water outlet. The specific number of the water inlet and the water outlet is selected according to actual needs. A certain number of valves 330 can be used to achieve a more complex filtering effect.

[0105] Generally, a water inlet and a water outlet are provided. At this time, water can enter the filter cartridge from the water inlet, and after being filtered by the filter membrane 410, it flows out from the water outlet. In this process, the filter membrane 410 plays an important role. The filter membrane 410 inside the suction filter cartridge 400 is not a single specification, but a plurality of filter membranes 410 with different filtering parameters are used. From the water inlet to the water outlet, the filtering size of the filter membrane 410 gradually decreases.

[0106] Different substances have different solubility, particle size and other characteristics in water, so filter membranes 410 with different filtering parameters are required for targeted filtering and sampling. By arranging multiple filter membranes 410 in descending order of filtering size, different substances in water can be effectively separated, thereby achieving more accurate and comprehensive sampling.

[0107] In addition, the filter membrane 410 in the suction filter cartridge 400 also has a certain hierarchy. Each layer of the filter membrane 410 undertakes a different filtering task, intercepting and adsorbing specific substances in the water. This hierarchical design makes the entire filtering process more orderly and efficient, and also improves the accuracy and reliability of the sampling results.

[0108] In practical applications, the combination of the suction filter cartridge 400 and the filter membrane 410 exhibits excellent performance. Whether it is small particles, heavy metal ions or organic pollutants in the water, effective filtration and sampling can be performed. This makes it widely used in environmental monitoring, water quality testing, biomedicine and other fields. The suction filter cartridge 400 of the present application can sample the content, distribution range, physical and chemical components, ecological toxicity of sediment particles suspended in the plume, and the biological communities, biomass and changes in their ecological functions of small benthic organisms, microorganisms and other biological communities entrained by the plume.

[0109] In some examples, two suction filtration cartridges 400 are provided, and three filter membranes 410 arranged at intervals are provided in each suction filtration cartridge 400 .

[0110] The suction filter cartridge 400 of the present application does not exist alone, but can appear in pairs, or even more, so as to more accurately collect and analyze various particulate matter. In a specific example, two suction filter cartridges 400 are provided, and three filter membranes 410 are cleverly configured at intervals inside each filter cartridge. Such a design not only increases the filtering area and improves the filtering efficiency, but also makes the entire filtering process more refined and reliable.

[0111] The two filtration cartridges 400 are not exactly the same, and their filtration parameters are different. These parameters include filtration speed, filtration pressure, etc. These parameters directly determine the interception effect of the filter membrane 410 on particles of different particle sizes. The filtration parameters of different filter membranes 410 in the filter cartridge are also different, which is to deal with particles of different sizes and properties, so as to achieve more accurate graded sampling.

[0112] This hierarchical sampling method not only effectively prevents the filter membrane 410 from being blocked due to large particles, but also greatly improves the sampling efficiency. In actual operation, when the first filter membrane 410 finishes filtering, the system automatically switches to the second filter membrane 410 for filtering, and so on, until all filter membranes 410 have completed the filtering task. Alternatively, multiple layers of filter membranes 410 can filter at the same time, filtering different filtrates respectively, and completing the corresponding filtering task after filtering a certain flow rate.

[0113] During the filtration process, attention should also be paid to the protection of the samples. To this end, when all the filter membranes 410 have completed filtration, the system will draw a fixative solution into the filter cartridge 400 to fix the seabed samples. The function of the fixative solution is to prevent the samples from deteriorating or being lost during transportation, and to ensure the accuracy of subsequent analysis.

[0114] When the sampler reaches the sea surface, samples can be collected and subsequently studied. By analyzing these samples, the content, distribution range, and physical and chemical composition of sediment particles suspended in the plume can be evaluated. At the same time, the impact of these particles on the ecological environment can also be studied, such as ecotoxicity and the changes in the biomass, biomass, and ecological functions of the small benthic organisms and microorganisms they carry.

[0115] In the whole process, the setting of the suction filter cartridge 400 and the filter membrane 410 inside it plays a crucial role, not only ensuring the accuracy and reliability of sampling, but also providing valuable experimental data for subsequent research.

[0116] The device of the present application can not only be used for monitoring and research of marine environment, but also can be extended to other fields, such as monitoring of freshwater environment such as rivers and lakes and atmospheric environment. By continuously improving and perfecting this filtration system, we can better understand the environmental conditions and make greater contributions to protecting our home planet.

[0117] The deep-sea plume particle multi-stage filtration sampling device of the present application is a self-contained device specially designed for water sampling in deep-sea environments. The device can be carried by a submersible to the seabed and achieve fine filtration and sampling of deep-sea water bodies through a series of complex system settings.

[0118] The deep-sea plume particulate multi-stage filtration sampling device (hereinafter referred to as the device) can have highly automated and intelligent features. By setting a specific filtration time and start time, the manipulator of the submersible can trigger the device to start working at a predetermined time point. In addition, the device also provides two start modes for users to choose: one is a switch-type external trigger, that is, the device is started by the submersible's instructions or manual operation; the other is a timed automatic trigger, that is, the device automatically starts working according to the preset time without manual intervention. This flexible start mode enables the device to adapt to different sampling needs and environmental conditions.

[0119] In terms of filtering performance, the device has a powerful multi-stage filtering capability. The deep-sea plume particle multi-stage filtering sampling device uses a three-layer filter membrane 410, which effectively blocks microorganisms and sediment particles of different particle sizes on the filter membrane 410 by physical blocking. Each layer of the filter membrane 410 is carefully designed and selected to ensure that it can filter out particles within a specific particle size range. This multi-stage filtering design enables the device to achieve comprehensive and detailed filtering of deep-sea water bodies, thereby obtaining more accurate and reliable sampling data.

[0120] During the sampling process, the comprehensive filtration speed of the device can reach 3L / min as needed, ensuring the high efficiency of sampling. At the same time, the flow meter measures the amount of filtered water, providing accurate data support for subsequent sample analysis and research. After completing the filtration of a filter membrane 410, the device will automatically switch to the second suction filter cartridge 400 according to the preset parameters to ensure a continuous and uninterrupted sampling process. In addition, the device also has the function of switching the passage of a three-way valve, which can quickly switch to the fixed liquid injection stage after the filtration is completed, so as to fix the collected water particles and microorganisms and other samples.

[0121] In addition to the above core functions, the deep-sea plume particle multi-stage filtration sampling device also has some other practical features. For example, the device is made of corrosion-resistant and pressure-resistant materials to adapt to the complexity and extremeness of the deep-sea environment. At the same time, the device also has waterproof and dustproof functions to ensure stable and reliable operation in harsh marine environments.

[0122] In a second aspect, the present application provides an investigation device, including the above-mentioned deep-sea plume particulate matter multi-stage filtration sampling device; and a device body, the device body has a storage cavity, and the deep-sea plume particulate matter multi-stage filtration sampling device can be placed in the storage cavity.

[0123] Survey equipment, as an important tool for humans to explore the vast ocean, covers many types, including but not limited to large cargo ships, submarines, fishing boats and speedboats.

[0124] As an important carrier of ocean trade, cargo ships are responsible for transporting all kinds of goods from one place to another. They usually have a large hull and a powerful power system, which can carry a large amount of cargo and remain stable and safe during long voyages. The emergence of cargo ships has greatly promoted the development of global trade and made the economic ties between countries closer.

[0125] Submarines are devices that can travel underwater for a long time. They not only have strong maneuverability and concealment, but can also perform various complex tasks, such as seabed exploration and intelligence gathering. Submarines are widely used in the military field and are an important part of naval power. At the same time, with the advancement of science and technology, civilian submarines are gradually emerging, providing more possibilities for marine scientific research and exploration.

[0126] Fishing boats are also an integral part of survey equipment. They are mainly used to catch fish and other marine life in the ocean, providing abundant marine resources for human diet. There are many types of fishing boats, from small hand-cranked boats to large trawlers, each of which has its own specific fishing methods and scope of application.

[0127] As a high-speed navigation tool, speedboats play an important role in marine activities with their flexibility and speed advantages. They are usually used in the fields of marine rescue, patrol, sports competition, etc., and can quickly reach the designated location in a short time to complete various emergency tasks.

[0128] In the depths of the ocean, there are countless unknown mysteries and rich resources. In order to better understand the deep-sea environment, the deep-sea plume particle multi-stage filtration sampling device of the present application can be mounted on the above-mentioned survey equipment. This device can accurately collect particle samples in the deep sea, and through multi-stage filtration technology, effectively separate particles of different particle sizes, providing valuable materials for subsequent experimental research.

[0129] The deep-sea plume particle multi-stage filtration sampling device has a wide range of applications, one of the important functions of which is to detect deep-sea microorganisms. Deep-sea microorganisms are an important part of the marine ecosystem. They have unique physiological functions and metabolic pathways, which are of great significance for understanding the balance and stability of the marine ecosystem. Through the detection of deep-sea microorganisms, we can have a deeper understanding of the mysteries of marine ecology and provide strong support for future marine scientific research.

[0130] In practical applications, the deep-sea plume particulate multi-stage filtration sampling device is usually placed on the above-mentioned survey equipment. These survey equipment have strong navigation capabilities and stable navigation performance, which can ensure that the sampling device can work stably in a complex marine environment. At the same time, the survey equipment can also provide the sampling device with the necessary power structure 200 and communication support to ensure its normal operation and real-time data transmission.

[0131] In addition, the survey equipment is also responsible for the placement, recovery, repair and maintenance of the deep-sea plume particulate multi-stage filtration sampling device. During the placement process, the survey equipment needs to accurately locate the sampling device and ensure that it can be stably fixed on the seabed. During the recovery process, the survey equipment needs to accurately find the location of the sampling device and recover it safely. In terms of repair and maintenance, the professionals on the survey equipment will regularly inspect and maintain the sampling device to ensure that it is in good working condition.

[0132] The same or similar numbers in the drawings of this application correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0133] The above are only preferred examples of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A deep-sea plume particulate multi-stage filtration sampling device, characterized in that: Used for deep-sea environmental survey and assessment sampling, the deep-sea plume particulate multi-stage filtration sampling device includes: An assembly frame having an assembly cavity; A power supply structure, installed in the assembly cavity, the power supply structure can provide electrical energy; A pump assembly connected to the power structure, the pump assembly being capable of pumping seawater; at least two suction filter cartridges connected to the pump assembly, the suction filter cartridges being capable of filtering the seawater; Each of the suction filtration cartridges has at least two layers of filter membranes, different suction filtration cartridges have different filtration parameters, and different filter membranes in the suction filtration cartridges have different filtration parameters.

2. The deep-sea plume particle multi-stage filtration sampling device according to claim 1, characterized in that: Also included is a detection component, the detection component comprising: A flow meter connected to the pump assembly, the flow meter is used to measure the filtration flow of the suction filter cartridge, at least two suction filter cartridges share one flow meter, or each suction filter cartridge has a channel for the flow meter; At least one seawater monitor is installed on the assembly frame, and the seawater monitor is used to monitor seawater parameters at a sampling location.

3. The deep-sea plume particle multi-stage filtration sampling device according to claim 2, characterized in that: The pump assembly includes a pump body, a driving member and at least one valve, the pump body is connected to the driving member, the driving member is connected to the power supply structure, the driving member can provide power for the pump body, the valve is directly or indirectly connected to the pump body, and the valve can control the connection path of the pump body.

4. The deep-sea plume particle multi-stage filtration sampling device according to claim 3, characterized in that: When two suction filtration cartridges are provided, the valve includes at least one two-position three-way valve, and the two-position three-way valve is connected to the two suction filtration cartridges at the same time.

5. The deep-sea plume particle multi-stage filtration sampling device according to claim 1, characterized in that: It also includes a control device, which is connected to the pump assembly and can control the working mode of the pump assembly.

6. The deep-sea plume particle multi-stage filtration sampling device according to claim 1, characterized in that: The power supply structure is provided with a charging device, and the charging device can be connected to an external power supply and charged; Alternatively, the charging device includes at least one of a generator and a photovoltaic structure.

7. The deep-sea plume particle multi-stage filtration sampling device according to claim 1, characterized in that: The deep-sea plume particulate multi-stage filtration sampling device further comprises a fixed liquid barrel, the fixed liquid barrel is connected to the suction filter cartridge, and a fixed liquid is stored in the fixed liquid barrel; After the suction filter cartridge has completed sampling, the pump assembly extracts the fixing liquid in the fixing liquid barrel and delivers it to the suction filter cartridge to fix the sample on the filter membrane.

8. The deep-sea plume particle multi-stage filtration sampling device according to any one of claims 1 to 7, characterized in that: The filter membrane is enclosed in the suction filter cartridge, and the filtering size of the filter membrane decreases in the direction from the water inlet to the water outlet of the suction filter cartridge.

9. The deep-sea plume particle multi-stage filtration sampling device according to claim 8, characterized in that: Two suction filtration cartridges are provided, and three filter membranes are arranged at intervals in each suction filtration cartridge.

10. A survey device, characterized in that: include: The deep-sea plume particulate multi-stage filtration sampling device according to any one of claims 1 to 9; and, The equipment body has a storage cavity, and the deep-sea plume particulate matter multi-stage filtration sampling device can be placed in the storage cavity.

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