A device for remediation of bottom sediment

Abstract

The application provides a kind of bottom sediment remediation device, water environment treatment engineering field, bottom sediment remediation device includes shell, adsorption component and purification component, shell is spherical or cylindrical, so that the overall bottom sediment remediation device can move under the action of water flow, reduce the workload of engineering personnel;Adsorption component includes adsorption layer covering on the outer surface of shell, adsorption layer is filled with adsorbent, adsorbent can adsorb pollutants in bottom sediment;Purification component includes storage sac arranged in shell, storage sac is used to store purifying agent;The outside of storage sac and shell is communicated through flow guide pipe, and the storage sac can discharge supersaturated oxygen-rich water to the bottom sediment through the flow guide pipe, oxidize and decompose part of organic pollutants, reconstruct bottom sediment microbial community, and improve the environment of bottom sediment ecosystem;Solve the problem that the repair mode of the existing bottom sediment remediation device is relatively single, mechanical traction is needed to guide the position of the remediation device, resulting in complex repair engineering, more manpower and material resources required and low repair efficiency.

Description

Technical Field

[0001] This invention belongs to the field of water environment management engineering, and in particular relates to a bottom sediment remediation device. Background Technology

[0002] Bottom sediment is typically a mixture of clay, silt, organic matter, and various minerals, formed by long-term physical, chemical, and biological processes and water transport, deposited at the bottom of water bodies. River and lake bottom sediment is a significant carrier of pollutants in the aquatic environment. Remediation of river and lake bottom sediment is generally divided into physical remediation, chemical remediation, and bioremediation. Among these, physical remediation is often used in small-scale sediment remediation projects due to its rapid effectiveness and low likelihood of secondary pollution.

[0003] However, existing sediment remediation devices typically employ a limited range of methods and require mechanical traction to guide their position, which increases the workload for engineers. Furthermore, the remediation process is inefficient and yields poor results. Summary of the Invention

[0004] In view of this, the present invention provides a bottom sediment remediation device to solve the problems that existing bottom sediment remediation devices have a relatively simple remediation method and require mechanical traction to guide the position of the remediation device, resulting in complex remediation projects, large amounts of manpower and material resources required, low remediation efficiency and poor remediation effect.

[0005] This invention provides a sediment remediation device, comprising:

[0006] case,

[0007] An adsorption assembly includes an adsorption layer covering the outer surface of a housing and filled with an adsorbent for adsorbing pollutants in sediment.

[0008] A purification component includes a storage bladder disposed within a housing for storing a purification agent; the storage bladder and the exterior of the housing are connected by a guide pipe for discharging the purification agent from the storage bladder to the bottom sediment.

[0009] Alternatively, the shell may be spherical or cylindrical, allowing the entire sediment remediation device to move under the influence of water flow.

[0010] The adsorption layer is made of a rigid porous material, and the purifying agent includes supersaturated oxygen-enriched water.

[0011] Further optionally, the adsorption assembly further includes an absorbent pad that covers a portion of the outer surface of the adsorption layer;

[0012] The sediment remediation device further includes an isolation component, which includes an isolation membrane and an isolation plate. The isolation membrane covers the outer surface of the adsorption layer that does not cover the absorbent pad. The isolation plate is movably disposed outside the housing. In the direction of movement of the isolation plate, the isolation plate has an isolation position and a non-isolation position. The isolation plate can be controlled to move, allowing it to switch between the isolation position and the non-isolation position.

[0013] When the isolation plate is in the isolation position, the isolation plate covers the outer surface of the absorbent pad; when the isolation plate is in the non-isolation position, the isolation plate is away from the absorbent pad.

[0014] Further optionally, the adsorption layer forms a clearance hole; a fixing seat is provided on the outer surface of the housing, one end of the fixing seat near the housing passes through the clearance hole, and the other end of the fixing seat away from the housing extends to the outside of the adsorption layer;

[0015] The sediment remediation device further includes a limiting component and a locking component, both of which are disposed between the isolation plate and the fixed base; the limiting component limits the isolation plate; the locking component locks the isolation plate when it is in the isolation position, and releases the isolation plate when it is necessary to move the isolation plate to the non-isolation position.

[0016] Further optionally, when the housing is spherical, the isolation plate is rotatably disposed on the outside of the housing; a guide groove is formed between the shell wall of the housing and the absorbent pad, the guide groove connecting the inside of the housing and the outside of the absorbent pad, and a connector is disposed in the guide groove;

[0017] The isolation assembly further includes a mounting ring, which is rotatably disposed within the housing and the mounting ring and the isolation plate are connected by the connector; when the mounting ring is controlled to rotate, the isolation plate can rotate.

[0018] Further optionally, the absorbent pad includes two first absorbent pads, which are arranged opposite each other circumferentially along the Y-axis of a Cartesian coordinate system; the separator includes two first separators; both first separators are rotatable around the Y-axis and are spaced apart circumferentially along the Y-axis; when both first separators are rotated to the separator position, they cover the outer surfaces of the two first absorbent pads one-to-one; and / or,

[0019] The absorbent pad includes a second absorbent pad, and two second absorbent pads are provided; the two second absorbent pads are arranged opposite each other in the circumferential direction of the X-axis of the rectangular coordinate system; the isolation plate includes a second isolation plate, and two second isolation plates are provided; both second isolation plates can rotate around the X-axis and are spaced apart in the circumferential direction of the X-axis; when both second isolation plates are rotated to the isolation position, the two second isolation plates cover the outer surfaces of the two second absorbent pads one by one;

[0020] The rectangular coordinate system is a rectangular coordinate system established with the center of the shell as the origin and the X-axis, Y-axis and Z-axis as coordinate axes; the X-axis, Y-axis and Z-axis are perpendicular to each other.

[0021] Further optionally, when the absorbent pad includes a first absorbent pad and the separator includes a first separator, the guide groove includes a first guide groove, and two first guide grooves are provided. The two first guide grooves are spaced apart in the circumferential direction of the Y-axis and are symmetrical about the origin. The connector includes a first connector, and two first connectors are provided. The two first connectors are correspondingly disposed in the two first guide grooves. The mounting ring includes a first mounting ring, and the rotation axis and the axis of the first mounting ring are collinear with the Y-axis. The first mounting ring is connected to the two first separators respectively through the two first connectors.

[0022] When the absorbent pad includes a second absorbent pad and the separator includes a second separator, the guide groove includes a second guide groove, and there are two second guide grooves. The two second guide grooves are spaced apart in the circumferential direction of the X-axis and are symmetrical about the origin. The connector includes a second connector, and there are two second connectors. The two second connectors are correspondingly arranged in the two second guide grooves. The mounting ring includes a second mounting ring, and the inner diameter of the second mounting ring is larger than the outer diameter of the first mounting ring. The rotation axis of the second mounting ring and the axis of the second mounting ring are both collinear with the X-axis. The second mounting ring is connected to the two second separators respectively through the two second connectors.

[0023] Optionally, the isolation assembly further includes a drive wheel and a drive motor. The drive wheel is rotatably disposed on the outer side wall of the mounting ring and contacts the inner surface of the housing. The output shafts of the drive wheel and the drive motor are drivenly connected. When the drive motor is running, the drive wheel can rotate relative to the housing with the mounting ring.

[0024] Further optionally, when the absorbent pad includes a first absorbent pad and a second absorbent pad, and the separator includes a first separator and a second separator, four fixing seats are provided, and the four fixing seats are evenly spaced around the Z-axis in the circumferential direction; a gap is formed between two adjacent fixing seats, and the four fixing seats form four gaps;

[0025] The two intervals are arranged opposite each other in the X-axis direction, and the two first absorbent pads are arranged in the two intervals in a one-to-one correspondence; when both first isolation plates are in the isolation position, the two first isolation plates are located in the two intervals.

[0026] The other two intervals are arranged opposite each other in the Y-axis direction, and the two second absorbent pads are arranged in the two intervals in a one-to-one correspondence; when both second isolation plates are in the isolation position, the two second isolation plates are located in the two intervals.

[0027] Further optionally, the limiting component includes a first limiting component and a second limiting component; the first limiting component includes a first limiting block and a first limiting elastic element, and the second limiting component includes a second limiting block and a second limiting elastic element;

[0028] Each of the fixed seats includes a first fixed seat wall and a second fixed seat wall disposed opposite to each other in the circumferential direction of the Z-axis, the first fixed seat wall being disposed close to the first isolation plate and the second fixed seat wall being disposed close to the second isolation plate;

[0029] The first fixed seat wall is formed with a first limiting groove, at least a portion of the first limiting block is disposed in the first limiting groove, and the first limiting block and the first limiting groove are connected by the first limiting elastic member; the first isolation plate is located between two adjacent first fixed seat walls, and the two side walls of the first isolation plate that are axially opposite to each other on the first mounting ring correspond to the two first limiting blocks respectively; under the action of the two first limiting elastic members, the first isolation plate can rotate between the two first limiting blocks;

[0030] The second fixed seat wall is formed with a second limiting groove, at least a portion of the second limiting block is disposed in the second limiting groove, and the second limiting block and the second limiting groove are connected by the second limiting elastic member; the second isolation plate is located between two adjacent second fixed seat walls, and the two side walls of the second isolation plate that are axially opposite to each other on the second mounting ring correspond to the two second limiting blocks respectively; under the action of the two second limiting elastic members, the second isolation plate can rotate between the two second limiting blocks.

[0031] Further optionally, the locking assembly includes a first locking component, which includes a first locking block and a magnetic mechanism;

[0032] The first fixed base wall has a first slot, at least a portion of the first locking block is disposed in the first slot, and a magnetic mechanism is disposed between the first locking block and the first slot; the first isolation plate has first locking grooves on both side walls that are disposed opposite to each other in the axial direction of the first mounting ring, and the two first locking grooves and the two first locking blocks are disposed in a one-to-one correspondence.

[0033] By controlling the energization or de-energization of the two magnetic mechanisms, the two first locking blocks can be locked into the two first locking slots in a one-to-one correspondence, thereby locking the first isolation plate in the isolation position; or, the two first locking blocks can be separated from the corresponding first locking slots respectively, thereby releasing the first isolation plate.

[0034] Further optionally, the locking assembly includes a second locking assembly, the second locking assembly including a second locking block and a locking elastic element;

[0035] The second fixed base wall has a second slot, at least a portion of the second locking block is disposed in the second slot, and the locking elastic element is disposed between the second locking block and the second slot; the second isolation plate has second locking grooves formed on both side walls that are axially opposite to the second mounting ring, and the two second locking grooves and the two second locking blocks are disposed in a one-to-one correspondence; the second locking groove is a trapezoidal groove, and the side of the second locking block near the second fixed base wall has an inclined surface;

[0036] When the second isolation plate moves from the non-isolation position to the isolation position, under the action of the two locking elastic members, the two second locking blocks are locked in the two second locking grooves one by one, and the trapezoidal groove and the inclined surface cooperate to lock the second isolation plate; when the second isolation plate moves from the isolation position to the non-isolation position, the trapezoidal groove and the inclined surface separate, and the second isolation plate is released.

[0037] Further optionally, the mounting base has a valve fixing hole that connects the interior and exterior of the housing; a one-way valve is provided in the valve fixing hole, and the one-way valve and the storage bladder are connected through the guide tube; the one-way valve is configured such that the purifying agent in the storage bladder can be discharged to the exterior of the housing through the guide tube, and objects outside the housing cannot enter the storage bladder through the guide tube.

[0038] Further optionally, the purification assembly further includes an airbag and a compressed gas cylinder, the airbag being disposed within the storage bladder, and the compressed gas cylinder being disposed on the fixed base; the shell wall of the housing has a housing through-hole at a position corresponding to the compressed gas cylinder, the side wall of the storage bladder has a storage bladder through-hole at a position corresponding to the compressed gas cylinder, and the vent pipe passes through the housing through-hole and the storage bladder through-hole, and the vent pipe connects the compressed gas cylinder and the airbag;

[0039] When the compressed gas cylinder exhausts gas into the gas bag, the storage bag can discharge a purifying agent into the bottom sediment.

[0040] Further optionally, four fixing seats are provided, and the four fixing seats are evenly spaced around the Z-axis in the circumferential direction; each fixing seat has at least one valve fixing hole, and each valve fixing hole is provided with a one-way valve;

[0041] The flow guide tube is provided in multiple ways, and each of the multiple flow guide tubes is connected to the storage bladder. The multiple flow guide tubes are also connected to the multiple one-way valves in a one-to-one correspondence.

[0042] The storage bladder can discharge purifying agent to different locations in the sediment via multiple of the aforementioned guide tubes.

[0043] Compared with the prior art, the main advantages of the present invention are as follows:

[0044] (1) The shell is spherical, which allows the entire sediment remediation device to move with the water flow, reducing the workload of engineers; the adsorption component adsorbs pollutants in the sediment onto the adsorbent in the adsorption layer, while the purification component discharges supersaturated oxygen-rich water to oxidize and decompose some organic pollutants, while reconstructing the sediment microbial community and improving the sediment ecosystem environment; the isolation component can prevent secondary pollution during the salvage of the sediment remediation device, thereby improving the practicality of the sediment remediation device.

[0045] (2) Before using the purification component, open the compressed gas cylinder opening. The compressed gas cylinder will release gas into the gas bag. Since there are multiple guide tubes on the storage bag, when the pressure of the supersaturated oxygen-enriched water exceeds the back pressure of the one-way valve, the one-way valve will open and release the supersaturated oxygen-enriched water in the storage bag into the bottom sediment to purify the bottom sediment.

[0046] (3) The limiting component limits the isolation plate, ensuring the stability of the isolation plate movement and allowing it to move accurately to the isolation position; the locking component locks the isolation plate when it is in the isolation position and releases it when it is necessary to move the isolation plate to the non-isolation position; thus improving the isolation effect and ensuring the flexibility of the isolation plate movement. Attached Figure Description

[0047] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0048] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0049] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the sediment remediation device provided by the present invention;

[0050] Figure 2 This is an exploded structural diagram of an embodiment of the sediment remediation device provided by the present invention;

[0051] Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of the sediment remediation device provided by the present invention;

[0052] Figure 4 This is another cross-sectional structural schematic diagram of an embodiment of the sediment remediation device provided by the present invention;

[0053] Figure 5 A schematic diagram of the shell embodiment provided by the present invention;

[0054] Figure 6 This is a schematic diagram of the structure of an embodiment of the adsorption component provided by the present invention;

[0055] Figure 7 This is a schematic diagram of the structure of an embodiment of the purification component provided by the present invention;

[0056] Figure 8a A schematic diagram of an embodiment of the first isolation plate, first connector, and first mounting ring provided by the present invention;

[0057] Figure 8b A schematic diagram of an embodiment of the second isolation plate, second connector, and second mounting ring provided by the present invention;

[0058] In the picture:

[0059] 1-Housing shell; 11-Fixing seat; 111-First fixing seat wall; 112-Second fixing seat wall; 113-First limiting groove; 114-Second limiting groove; 115-First locking groove; 116-Second locking groove; 117-Valve fixing hole; 118-Gas cylinder fixing hole; 12-Housing shell groove; 13-Housing shell through-hole; 141-First gap; 142-Second gap;

[0060] 2-Adsorption component; 21-Adsorption layer; 211-Avoidance hole; 212-Adsorption layer groove; 22-Absorbent pad; 221-First absorbent pad; 222-Second absorbent pad; 223-Absorbent pad groove;

[0061] 3-Purification component; 31-Storage bladder; 311-Storage bladder through-hole; 32-Guide tube; 33-One-way valve; 34-Airbag; 35-Compressed gas cylinder; 36-Ventilation tube;

[0062] 4-Isolation assembly; 41-Isolation plate; 411-First isolation plate; 412-Second isolation plate; 413-Second locking groove; 42-Connector; 421-First connector; 422-Second connector; 43-Mounting ring; 431-First mounting ring; 432-Second mounting ring; 44-Drive wheel;

[0063] 5-Limiting component; 51-First limiting block; 52-First limiting elastic element; 53-Second limiting block; 54-Second limiting elastic element;

[0064] 6-Locking assembly; 61-First locking block; 62-Second locking block; 63-Locking elastic element;

[0065] 71-First guide groove; 72-Second guide groove. Detailed Implementation

[0066] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0068] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0069] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0070] Existing contaminated sediment remediation devices have relatively limited remediation methods and require mechanical traction to guide the device, which increases the workload of engineers. In addition, the remediation projects are inefficient and have poor remediation effects.

[0071] This invention creatively provides a sediment remediation device, comprising a shell, an adsorption component, and a purification component. The shell is spherical or cylindrical, allowing the entire device to move with the water flow, reducing the workload of engineers. The adsorption component includes an adsorption layer covering the outer surface of the shell, filled with an adsorbent that adsorbs pollutants in the sediment. The purification component includes a storage bladder inside the shell for storing the purification agent. The storage bladder is connected to the outside of the shell via a guide pipe, through which the storage bladder discharges supersaturated oxygen-rich water into the sediment, oxidizing and decomposing some organic pollutants, reconstructing the sediment microbial community, and improving the sediment ecosystem environment.

[0072] like Figures 1 to 8b As shown, this embodiment provides a bottom mud repair device, specifically a bottom mud repair brick; the bottom mud repair device includes:

[0073] The shell 1 is spherical or cylindrical, allowing the entire sediment remediation device to move flexibly under the action of water flow, reducing the workload of engineers; preferably, the shell 1 is spherical.

[0074] The adsorption component 2 includes an adsorption layer 21 made of a rigid porous material; the adsorption layer 21 covers the outer surface of the shell 1 and is filled with an adsorbent for adsorbing pollutants in the sediment; specifically, the outer surface of the shell 1 is the surface of the shell 1 located radially outward, and the adsorption layer 21 is spherical in shape.

[0075] The purification component 3 includes a storage bladder 31 disposed inside the housing 1. The storage bladder 31 is used to store a purification agent. Preferably, the storage bladder 31 is spherical, and the purification agent includes supersaturated oxygen-enriched water. The storage bladder 31 is connected to the outside of the housing 1 through a guide pipe 32, which is used to discharge the purification agent in the storage bladder 31 to the bottom sediment. Specifically, the guide pipe 32 is a straight pipe and extends radially along the storage bladder 31.

[0076] Purification component 3 can release supersaturated oxygen-rich water into the sediment during the overall movement of the sediment remediation device with the water flow, so as to purify the sediment and reconstruct its ecology.

[0077] Furthermore, the adsorption component 2 also includes an absorption pad 22, which covers a portion of the outer surface of the adsorption layer 21; specifically, the structure of the absorption pad 22 is a part of a sphere, and the outer surface of the adsorption layer 21 is the surface of the adsorption layer located radially outward; preferably, the thickness direction of the absorption pad 22 is consistent with the radial direction of the housing 1, and the absorption pad 22 has the same thickness.

[0078] The sediment remediation device also includes an isolation component 4, which includes an isolation membrane and an isolation plate 41. The isolation membrane covers the outer surface of the adsorption layer 21 that does not cover the absorbent pad 22, and the structure of the isolation membrane is part of a sphere. The isolation plate 41 is movably disposed outside the housing 1, and the structure of the isolation plate 41 is also part of a sphere. In the direction of movement of the isolation plate 41, the isolation plate 41 has an isolation position and a non-isolation position. The isolation plate 41 can be controlled to move, so that the isolation plate 41 switches between the isolation position and the non-isolation position.

[0079] When the isolation plate 41 is in the isolation position, the isolation plate 41 covers the outer surface of the absorbent pad 22 and can completely cover the absorbent pad 22, which can avoid secondary pollution; when the isolation plate 41 is in the non-isolation position, the isolation plate 41 is away from the absorbent pad 22; the outer surface of the absorbent pad 22 is the surface of the absorbent pad 22 located on its radial outer side.

[0080] Specifically, the adsorption layer 21 includes a first adsorption region and a second adsorption region. The first adsorption region corresponds to the isolation position, and the second adsorption region corresponds to the non-isolation position. The outer diameter of the first adsorption region is smaller than the outer diameter of the second adsorption region. The first adsorption region is used to set the absorbent pad 22, and the second adsorption region is used to set the isolation membrane. After the absorbent pad 22 is set in the first adsorption region and the isolation membrane is set in the second adsorption region, the outer surface of the absorbent pad 22 and the outer surface of the isolation membrane are flush, so that the adsorption layer, the absorbent pad 22 and the isolation membrane together form most of a spherical surface, which does not affect the movement of the isolation plate 41. Alternatively, the outer diameter of the absorbent pad 22 is larger than the outer diameter of the isolation membrane, but the outer diameter of the absorbent pad 22 is smaller than the inner diameter of the isolation plate 41, which does not affect the movement of the isolation plate 41. When the isolation plate 41 moves to the isolation position, that is, when the isolation plate 41 moves to the first adsorption region, the isolation plate 41 moves to the non-isolation position, that is, when the isolation plate 41 moves to the second adsorption region. Preferably, the thickness direction of the isolation plate 41 is consistent with the radial direction of the shell 1, and the isolation plate 41 has the same thickness.

[0081] The following describes the structure required to lock the isolation plate 41 when it is in the isolation position. The adsorption layer 21 forms a clearance hole 211. A fixing seat 11 is provided on the outer surface of the housing 1. The fixing seat 11 extends radially along the housing 1. The end of the fixing seat 11 near the housing 1 passes through the clearance hole 211, and the end of the fixing seat 11 away from the housing 1 extends to the outside of the adsorption layer 21. Specifically, from the inside to the outside along the radial direction of the housing 1, the cross-sectional dimension of the fixing seat 11 in the Z-axis circumferential direction gradually increases. The fixing seat 11 includes a first end and a second end, which are arranged opposite to each other in a direction parallel to the Z-axis. From the first end to the second end, the width of the fixing seat 11 in the Z-axis circumferential direction first increases and then decreases. In the Z-axis circumferential direction, the cross-section of the clearance hole 211 and the cross-section of the fixing seat 11 are matched. The outer contour surface of the fixing seat 11 is part of a sphere, and the fixing seat 11 and the housing 1 are integrally formed.

[0082] The sediment remediation device also includes a limiting component 5 and a locking component 6, both of which are disposed between the isolation plate 41 and the fixed base 11. The limiting component 5 limits and guides the isolation plate 41, allowing the isolation plate 41 to switch between the isolation position and the non-isolation position. The locking component 6 is used to lock the isolation plate 41 when it is in the isolation position and to release it when it is necessary to move the isolation plate 41 to the non-isolation position.

[0083] The following description, using a spherical shell 1 as an example, further illustrates the specific structure of each component of the sediment remediation device. The isolation plate 41 is rotatably mounted on the outside of the shell 1. A guide groove is formed between the shell wall of the shell 1 and the absorbent pad 22, connecting the interior of the shell 1 and the exterior of the absorbent pad 22. A connector 42 is provided within the guide groove. Specifically, along the radial direction of the shell 1, the guide groove penetrates the shell wall, the absorbent layer 21, and the absorbent pad of the shell 1. Along the circumference of the shell 1, the guide groove extends along the shell wall of the shell 1 and has an arc-shaped structure with the center of the shell 1 as its origin. Preferably, the guide groove is an arc-shaped structure; the central angle of the guide groove is greater than or equal to 90° and less than 180°.

[0084] The isolation assembly 4 also includes a mounting ring 43, which is rotatably disposed within the housing 1 and is connected to the isolation plate 41 via a connector 42. When the mounting ring 43 is controlled to rotate, the connector 42 can rotate along the guide groove with the isolation plate 41. Preferably, the mounting ring 43 is circular, the center of the mounting ring 43 coincides with the center of the sphere of the housing 1, the axis of rotation of the mounting ring 43 passes through the center of the mounting ring 43, and the outer diameter of the mounting ring 43 is smaller than the inner diameter of the housing 1. The connector 42 extends radially along the housing as a whole.

[0085] Specifically, the shell wall of the shell 1 has a shell groove 12, the adsorption layer 21 has an adsorption layer groove 212 corresponding to the shell groove 12, and the absorbent pad 22 has an absorbent pad groove 223 corresponding to the shell groove 12; the shell groove 12, the adsorption layer groove 212 and the absorbent pad groove 223 are connected in sequence to form a guide groove; a roller can be provided between the connector 42 and the guide groove to support the connector 42 and reduce the friction between the connector 42 and the guide groove; along the radial direction of the shell 1 from the inside to the outside, the shell groove 12, the adsorption layer groove 212 and the absorbent pad groove 223 are arranged in sequence and connected; along the circumference of the shell 1, the shell groove 12, the adsorption layer groove 212 and the absorbent pad groove 223 all extend along the shell wall of the shell 1 and have an arc-shaped structure with the center of the shell 1 as the origin; preferably, the shell groove 12, the adsorption layer groove 212 and the absorbent pad groove 223 are all arc-shaped structures.

[0086] Furthermore, the absorbent pad 22 includes a first absorbent pad 221, and two first absorbent pads 221 are provided; the two first absorbent pads 221 are arranged opposite each other in the circumferential direction of the Y-axis of the rectangular coordinate system and the two first absorbent pads 221 are symmetrical about the center of the shell 1.

[0087] The isolation plate 41 includes a first isolation plate 411, and there are two first isolation plates 411; both first isolation plates 411 can rotate around the Y-axis and the two first isolation plates 411 are spaced apart in the circumferential direction of the Y-axis; when both first isolation plates 411 are rotated to the isolation position, the two first isolation plates 411 cover the outer surface of the two first absorbent pads 221 in a one-to-one correspondence; the first isolation plate 411 can completely cover the corresponding first absorbent pad 221;

[0088] When both first isolation plates 411 are in the isolation position, the two first isolation plates 411 are arranged opposite each other in the X-axis direction; when both first isolation plates 411 are in the non-isolation position, the two first isolation plates 411 are arranged opposite each other in the Z-axis direction; and / or,

[0089] The absorbent pad 22 includes a second absorbent pad 222, and two second absorbent pads 222 are provided; the two second absorbent pads 222 are arranged opposite each other in the circumferential direction of the X-axis of the rectangular coordinate system and the two second absorbent pads 222 are symmetrical about the center of the shell 1;

[0090] The isolation plate 41 includes two second isolation plates 412. Both second isolation plates 412 can rotate around the X-axis and are spaced apart in the circumferential direction of the X-axis. When both second isolation plates 412 are rotated to the isolation position, they cover the outer surfaces of the two second absorbent pads 222 one by one. The second isolation plates 412 can completely cover the corresponding second absorbent pads 222.

[0091] When both second isolation plates 412 are in the isolation position, the two second isolation plates 412 are arranged opposite each other in the Y-axis direction; when both second isolation plates 412 are in the non-isolation position, the two first isolation plates 412 are arranged opposite each other in the Z-axis direction.

[0092] The rectangular coordinate system is a direct coordinate system established with the center of shell 1 as the origin and the X-axis, Y-axis, and Z-axis as coordinate axes. The X-axis, Y-axis, and Z-axis are mutually perpendicular, with the X-axis and Y-axis both located in the horizontal plane, and the Z-axis extending vertically. The positive directions of the X-axis, Y-axis, and Z-axis are as follows: Figure 2 As indicated by the middle arrow.

[0093] The following describes the structure required for the rotation of the first isolation plate 411 and the second isolation plate 412. When the absorption pad 22 includes the first absorption pad 221 and the isolation plate 41 includes the first isolation plate 411, the guide groove includes the first guide groove 71. There are two first guide grooves 71. The two first guide grooves 71 are spaced apart in the circumferential direction of the Y axis and the two first guide grooves 71 are symmetrical with respect to the center of the origin.

[0094] The connector 42 includes a first connector 421, and there are two first connectors 421; the two first connectors 421 are arranged in the two first guide grooves 71 in a one-to-one correspondence and the two first connectors 421 are symmetrical with respect to the origin center. The first connectors 421 are rotatably arranged in the corresponding first guide grooves 71.

[0095] The mounting ring 43 includes a first mounting ring 431. The pivot of the first mounting ring 431 and the axis of the first mounting ring 431 are both collinear with the Y-axis. The first mounting ring 431 is connected to two first isolation plates 411 respectively through two first connectors 421.

[0096] When the absorbent pad 22 includes the second absorbent pad 222 and the separator 41 includes the second separator 412, the guide groove includes the second guide groove 72. There are two second guide grooves 72. The two second guide grooves 72 are spaced apart in the circumferential direction of the X-axis and the two second guide grooves 72 are symmetrical with respect to the origin center.

[0097] The connector 42 includes two second connectors 422. The two second connectors 422 are arranged in two second guide grooves 72 in a one-to-one correspondence and are symmetrical with respect to the origin center. The second connectors 422 are rotatably arranged in the second guide grooves 72.

[0098] Mounting ring 43 includes a second mounting ring 432. The outer diameter of the first mounting ring 431 is smaller than the inner diameter of the second mounting ring 432. The first mounting ring 431 and the second mounting ring 432 do not affect each other when they rotate. The rotation axis and the axis of the second mounting ring 432 are both collinear with the X-axis. The second mounting ring 432 is connected to two second isolation plates 412 respectively through two second connectors 422.

[0099] Furthermore, the isolation assembly 4 also includes a drive wheel 44 and a drive motor. The drive wheel 44 is rotatably mounted on the mounting ring 43 and contacts the inner surface of the housing 1. The drive wheel 44 supports the mounting ring 43, reducing friction between the mounting ring 43 and the housing 1. The drive wheel 44 is driven to the output shaft of the drive motor. When the drive motor is running, the drive wheel 44 can rotate relative to the housing 1 while carrying the mounting ring 43. Specifically, a plurality of drive wheels 44 are provided on the first mounting ring 431, and the plurality of drive wheels 44 are spaced apart circumferentially along the first mounting ring 431. When at least one of the plurality of drive wheels 44 is driven to rotate, the first mounting ring 431 can rotate relative to the housing 1. A plurality of drive wheels 44 are provided on the second mounting ring 432, and the plurality of drive wheels 44 are spaced apart circumferentially along the second mounting ring 432. When at least one of the plurality of drive wheels 44 is driven to rotate, the second mounting ring 432 can rotate relative to the housing 1.

[0100] The following example, with four fixed seats 11, further illustrates the situation when the isolation plate 41 is in the isolation position. The four fixed seats 11 are evenly spaced around the Z-axis; a gap is formed between two adjacent fixed seats 11, and the four fixed seats 11 form four gaps.

[0101] Two of the intervals are arranged opposite each other in the X-axis direction, and two first absorption pads 221 are arranged in the two intervals in a one-to-one correspondence; when both first isolation plates 411 are in the isolation position, the two first isolation plates 411 are located in the two intervals; specifically, the two intervals are the first intervals 141.

[0102] The other two intervals are arranged opposite each other in the Y-axis direction, and the two second absorption pads 222 are arranged in the two intervals in a one-to-one correspondence; when both second isolation plates 412 are in the isolation position, the two second isolation plates 412 are located in the two intervals; specifically, the two intervals are the second intervals 142.

[0103] Specifically, the four fixing seats 11 are a first fixing seat, a second fixing seat, a third fixing seat, and a fourth fixing seat arranged circumferentially around the Z-axis. A second gap 142 is formed between the first fixing seat and the second fixing seat, and between the third fixing seat and the fourth fixing seat. The two second gaps 142 are spaced apart in the Y-axis direction. A first gap 141 is formed between the second fixing seat and the third fixing seat, and between the first fixing seat and the fourth fixing seat. The two first gaps 141 are spaced apart in the X-axis direction. The upper part of the four fixing seats 11 and the upper outer surface of the isolation membrane together form an upper receiving space, and the lower part of the four fixing seats 11 and the lower outer surface of the isolation membrane together form a lower receiving space.

[0104] When the two first absorbent pads 221 are in the isolation position, the two first absorbent pads 221 are located in the two first intervals 141 in a one-to-one correspondence; when the two first absorbent pads 221 are in the non-isolation position, one first absorbent pad 221 is located in the upper receiving space and the other first absorbent pad 221 is located in the lower receiving space.

[0105] When the two second absorbent pads 222 are in the isolation position, the two second absorbent pads 222 are located in the two second intervals 142 in a one-to-one correspondence; when the two second absorbent pads 222 are in the non-isolation position, one second absorbent pad 222 is located in the upper receiving space and the other second absorbent pad 222 is located in the lower receiving space.

[0106] The following is a further explanation of the specific structure of the limiting component 5. The limiting component 5 includes a first limiting component and a second limiting component. The first limiting component includes a first limiting block 51 and a first limiting elastic member 52. The second limiting component includes a second limiting block 53 and a second limiting elastic member 54.

[0107] Each fixed seat 11 includes a first fixed seat wall 111 and a second fixed seat wall 112 arranged opposite to each other in the circumferential direction of the Z-axis. The first fixed seat wall 111 is arranged close to the first isolation plate 411, and the second fixed seat wall 112 is arranged close to the second isolation plate 412.

[0108] The first fixed base wall 111 has a first limiting groove 113, at least a portion of the first limiting block 51 is disposed in the first limiting groove 113 and the first limiting block 51 and the first limiting groove 113 are connected by a first limiting elastic member 52; the first isolation plate 411 is located between two adjacent first fixed base walls 111, and the two side walls of the first isolation plate 411 that are axially opposite to each other in the first mounting ring 431 correspond to the two first limiting blocks 51 respectively; under the action of the two first limiting elastic members 52, the first isolation plate 411 can rotate between the two first limiting blocks 51;

[0109] The second fixed base wall 112 has a second limiting groove 114, at least a portion of the second limiting block 53 is disposed in the second limiting groove 114 and the second limiting block 53 and the second limiting groove 114 are connected by a second limiting elastic member 54; the second isolation plate 412 is located between two adjacent second fixed base walls 112, and the two side walls of the second isolation plate 412 that are axially opposite to each other on the second mounting ring 432 correspond to the two second limiting blocks 53 respectively; under the action of the two second limiting elastic members 54, the second isolation plate 412 can rotate between the two second limiting blocks 53.

[0110] The specific structure of the locking assembly 6 is further described below. The locking assembly 6 includes a first locking assembly, which includes a first locking block 61 and a magnetic mechanism.

[0111] The first fixed base wall 111 has a first slot 115, at least a portion of the first locking block 61 is disposed in the first slot 115 and a magnetic mechanism is disposed between the first locking block 61 and the first slot 115; the first isolation plate 411 has first locking grooves formed on both side walls that are axially opposite to the first mounting ring 431, and the two first locking grooves and the two first locking blocks 61 are disposed in a one-to-one correspondence;

[0112] By controlling the energization or de-energization of the two magnetic mechanisms, the two first locking blocks 61 can be locked into the two first locking grooves in a one-to-one correspondence, thereby locking the first isolation plate 411 in the isolation position; or, the two first locking blocks 61 can be separated from the corresponding first locking grooves respectively, thereby releasing the first isolation plate 411.

[0113] Specifically, when the two magnetic mechanisms are de-energized, under the action of the two magnetic mechanisms, the two first locking blocks 61 are locked into the two first locking grooves one-to-one, thereby locking the first isolation plate 411 in the isolation position; when the two magnetic mechanisms are energized, the two first locking blocks 61 separate from the corresponding first locking grooves, thereby releasing the first isolation plate 411, which can rotate to the non-isolation position; the two magnetic mechanisms can be electrically connected to the controller of the sediment remediation device, and the controller can control the energization or de-energization of the two magnetic mechanisms.

[0114] Furthermore, the locking assembly 6 includes a second locking assembly, which includes a second locking block 62 and a locking elastic member 63;

[0115] The second fixed base wall 112 has a second slot 116, at least a portion of the second locking block 62 is disposed in the second slot 116, and a locking elastic element 63 is disposed between the second locking block 62 and the second slot 116; the second isolation plate 412 has a second locking groove 413 formed on both side walls that are axially opposite to the second mounting ring 432, and the two second locking grooves 413 and the two second locking blocks 62 are disposed in a one-to-one correspondence; the second locking groove 413 is a trapezoidal groove, and the side of the second locking block 62 near the second fixed base wall 112 has an inclined surface;

[0116] When the second isolation plate 412 moves from the non-isolation position to the isolation position, under the action of the two locking elastic members 63, the two second locking blocks 62 are locked in the two second locking grooves 413 in a one-to-one correspondence. The trapezoidal groove and the inclined surface cooperate to lock the second isolation plate 412. When the second isolation plate 412 moves from the isolation position to the non-isolation position, the trapezoidal groove and the inclined surface separate, so that the second isolation plate 412 is released.

[0117] Specifically, when both first isolation plates 411 are in the isolation position, one first isolation plate 411 is located within the first interval 141 formed by the first fixed seat and the fourth fixed seat, and the other first isolation plate 411 is located within the first interval 141 formed by the second fixed seat and the third fixed seat;

[0118] When both second isolation plates 412 are in the isolation position, one second isolation plate 412 is located within the second interval 142 formed by the first fixed seat and the second fixed seat, and the other second isolation plate 412 is located within the second interval 142 formed by the third fixed seat and the fourth fixed seat.

[0119] The specific structure of the purification component 3 is further described below. The fixing base 11 has a valve fixing hole 117, which connects the inside and outside of the housing 1. A one-way valve 33 is provided in the valve fixing hole 117, and the one-way valve 33 and the storage bladder 31 are connected through the guide pipe 32. The one-way valve 33 is configured such that the purification agent in the storage bladder 31 can be discharged to the outside of the housing 1 through the guide pipe 32, and objects outside the housing 1 cannot enter the storage bladder 31 through the guide pipe 32.

[0120] Furthermore, the purification component 3 also includes an airbag 34, a compressed gas cylinder 35, and a venting pipe 36. The airbag 34 is disposed inside the storage bladder 31, and the compressed gas cylinder 35 is disposed on the fixing base 11. The shell wall of the housing 1 has a housing through-hole 13 at a position corresponding to the compressed gas cylinder 35, and the side wall of the storage bladder 31 has a storage bladder through-hole 311 at a position corresponding to the compressed gas cylinder 35. The venting pipe 36 passes through the housing through-hole 13 and the storage bladder through-hole 311, and the venting pipe 36 connects the compressed gas cylinder 35 and the airbag 34. Specifically, the fixing base 11 has a gas cylinder fixing hole 118, which connects to the housing through-hole 13. The compressed gas cylinder 35 is disposed inside the gas cylinder fixing hole 118, and one end of the venting pipe 36 passes through the housing through-hole 13 and connects to the compressed gas cylinder 35. The venting pipe 36 is a straight pipe and extends radially along the housing 1.

[0121] When the compressed gas cylinder 35 vents gas to the air bag 34, the storage bag 31 can discharge the purifying agent into the bottom sediment.

[0122] The following example, with four fixed seats 11, further illustrates the specific structure of the purification component 3. The four fixed seats 11 are evenly spaced around the Z-axis in the circumferential direction. Each fixed seat 11 has at least one valve fixing hole 117, and each valve fixing hole 117 is provided with a one-way valve 33.

[0123] Multiple guide tubes 32 are provided, and all multiple guide tubes 32 are connected to the storage bladder 31. Furthermore, the multiple guide tubes 32 are connected to the multiple one-way valves 33 in a one-to-one correspondence.

[0124] The storage bladder 31 can discharge the purifying agent to different locations in the bottom sediment through multiple guide pipes 32.

[0125] Before using the sediment remediation device, open the compressed gas cylinder 35 and then place the device upstream of the water body corresponding to the sediment to be remediated. After the device sinks to the bottom, the adsorbent in the adsorption layer 21 will begin to absorb pollutants in the sediment through the two first absorption pads 221. After the first absorption pads 221 have absorbed for a period of time, the timer set inside the housing 1 will start the drive motor installed on the first mounting ring 431 in the isolation assembly 4. The drive motor will drive the corresponding drive wheel 44 to rotate, thereby driving the first mounting ring 431 to rotate 90 degrees around the Y-axis until the two first isolation plates 411 completely cover the sediment. The first isolation plate 411 is locked to the outer surface of the first absorption pad 221 by the first locking assembly. At this time, the drive motor on the second mounting ring 432 is started. The drive motor will drive the corresponding drive wheel 44 to rotate, thereby driving the second mounting ring 432 to rotate 90 degrees around the X-axis until the second isolation plate 412 completely covers the outer surface of the corresponding second absorption pad 222. Then, the two second isolation plates 412 are locked to the second locking assembly. At this time, the bottom sediment remediation device completes the adsorption work. The isolation assembly 4 can prevent secondary pollution during the dredging process, thereby improving the practicality of the bottom sediment remediation device.

[0126] The compressed gas cylinder 35 releases gas into the gas bladder 34 in the storage bladder 31. Since the storage bladder 31 is equipped with multiple guide tubes 32, when the pressure of the supersaturated oxygen-enriched water exceeds the back pressure of the one-way valve 33, the one-way valve 33 will open and release the supersaturated oxygen-enriched water in the storage bladder 31 into the bottom sediment to purify the bottom sediment.

[0127] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A sediment remediation device, characterized in that, include: Shell (1), An adsorption assembly (2) includes an adsorption layer (21) and an absorption pad (22), wherein the adsorption layer (21) covers the outer surface of the housing (1) and is filled with an adsorbent for adsorbing pollutants in the sediment; the absorption pad (22) covers a portion of the outer surface of the adsorption layer (21). Purification component (3) includes a storage bladder (31) disposed inside the housing (1) for storing purification agent; the storage bladder (31) and the outside of the housing (1) are connected by a guide pipe (32) for discharging the purification agent in the storage bladder (31) to the bottom sediment; An isolation component (4) includes an isolation membrane and an isolation plate (41). The isolation membrane covers the outer surface of the adsorption layer (21) that does not cover the absorbent pad (22). The isolation plate (41) is movably disposed outside the housing (1). In the direction of movement of the isolation plate (41), the isolation plate (41) has an isolation position and a non-isolation position. The isolation plate (41) can be controlled to move, so that the isolation plate (41) switches between the isolation position and the non-isolation position. When the isolation plate (41) is in the isolation position, the isolation plate (41) covers the outer surface of the absorbent pad (22); when the isolation plate (41) is in the non-isolation position, the isolation plate (41) is away from the absorbent pad (22).

2. The sediment remediation device according to claim 1, characterized in that, The shell (1) is spherical or cylindrical, so that the entire bottom sediment remediation device can move under the action of water flow; The adsorption layer (21) is made of a rigid porous material, and the purifying agent includes supersaturated oxygen-rich water.

3. The sediment remediation device according to claim 2, characterized in that, The adsorption layer (21) forms a clearance hole (211); a fixing seat (11) is provided on the outer surface of the housing (1), one end of the fixing seat (11) near the housing (1) passes through the clearance hole (211), and the other end of the fixing seat (11) away from the housing (1) extends to the outside of the adsorption layer (21). The bottom mud remediation device also includes a limiting component (5) and a locking component (6), both of which are disposed between the isolation plate (41) and the fixing seat (11); the limiting component (5) limits the isolation plate (41); the locking component (6) locks the isolation plate (41) when it is in the isolation position, and releases the isolation plate (41) when it is necessary to move the isolation plate (41) to the non-isolation position.

4. The sediment remediation device according to claim 3, characterized in that, When the housing (1) is spherical, the isolation plate (41) is rotatably disposed outside the housing (1); a guide groove is formed between the shell wall of the housing (1) and the absorbent pad (22), the guide groove connects the interior of the housing (1) and the outside of the absorbent pad (22), and a connector (42) is disposed in the guide groove; The isolation assembly (4) further includes a mounting ring (43), which is rotatably disposed within the housing (1) and the mounting ring (43) and the isolation plate (41) are connected by the connector (42); when the mounting ring (43) is controlled to rotate, the isolation plate (41) can rotate.

5. The sediment remediation device according to claim 4, characterized in that, The absorbent pad (22) includes two first absorbent pads (221), which are arranged opposite each other in the circumferential direction of the Y-axis in a rectangular coordinate system; the isolation plate (41) includes two first isolation plates (411); both first isolation plates (411) can rotate around the Y-axis and are spaced apart in the circumferential direction of the Y-axis; when both first isolation plates (411) are rotated to the isolation position, the two first isolation plates (411) cover the outer surfaces of the two first absorbent pads (221) one by one; and / or, The absorbent pad (22) includes a second absorbent pad (222), and two second absorbent pads (222) are provided; the two second absorbent pads (222) are arranged opposite each other in the circumferential direction of the X-axis of the rectangular coordinate system; the isolation plate (41) includes a second isolation plate (412), and two second isolation plates (412) are provided; both second isolation plates (412) can rotate around the X-axis and the two second isolation plates (412) are spaced apart in the circumferential direction of the X-axis; when both second isolation plates (412) are rotated to the isolation position, the two second isolation plates (412) cover the outer surface of the two second absorbent pads (222) in a one-to-one correspondence; The rectangular coordinate system is a rectangular coordinate system established with the center of the shell (1) as the origin and the X-axis, Y-axis and Z-axis as coordinate axes; the X-axis, Y-axis and Z-axis are perpendicular to each other.

6. The sediment remediation device according to claim 5, characterized in that, When the absorbent pad (22) includes a first absorbent pad (221) and the isolation plate (41) includes a first isolation plate (411), the guide groove includes a first guide groove (71), and there are two first guide grooves (71). The two first guide grooves (71) are spaced apart in the circumferential direction of the Y-axis and are symmetrical with respect to the origin center. The connector (42) includes a first connector (421), and there are two first connectors (421). The two first connectors (421) are arranged in the two first guide grooves (71) in a one-to-one correspondence. The mounting ring (43) includes a first mounting ring (431), and the rotation axis of the first mounting ring (431) and the axis of the first mounting ring (431) are both collinear with the Y-axis. The first mounting ring (431) is connected to the two first isolation plates (411) respectively through the two first connectors (421). When the absorbent pad (22) includes a second absorbent pad (222) and the isolation plate (41) includes a second isolation plate (412), the guide groove includes a second guide groove (72), and there are two second guide grooves (72). The two second guide grooves (72) are spaced apart in the circumferential direction of the X-axis and are symmetrical with respect to the center of the origin. The connector (42) includes a second connector (422), and there are two second connectors (422). The two second connectors (422) are arranged in the two second guide grooves (72) in a one-to-one correspondence. The mounting ring (43) includes a second mounting ring (432), and the inner diameter of the second mounting ring (432) is larger than the outer diameter of the first mounting ring (431). The rotation shaft of the second mounting ring (432) and the axis of the second mounting ring (432) are both collinear with the X-axis. The second mounting ring (432) is connected to the two second isolation plates (412) respectively through the two second connectors (422).

7. The sediment remediation device according to claim 4, characterized in that, The isolation assembly (4) further includes a drive wheel (44) and a drive motor. The drive wheel (44) is rotatably mounted on the mounting ring (43) and the drive wheel (44) contacts the inner surface of the housing (1). The drive wheel (44) and the output shaft of the drive motor are drivenly connected. When the drive motor is running, the drive wheel (44) can rotate relative to the housing (1) with the mounting ring (43).

8. The sediment remediation device according to claim 6, characterized in that, When the absorbent pad (22) includes a first absorbent pad (221) and a second absorbent pad (222) and the separator plate (41) includes a first separator plate (411) and a second separator plate (412), the fixing seat (11) is provided with four, and the four fixing seats (11) are evenly spaced around the Z-axis; a gap is formed between two adjacent fixing seats (11), and the four fixing seats (11) form four gaps; Two of the intervals are arranged opposite each other in the X-axis direction, and two first absorbent pads (221) are arranged in the two intervals in a one-to-one correspondence; when both first isolation plates (411) are in the isolation position, the two first isolation plates (411) are located in the two intervals. The other two intervals are arranged opposite each other in the Y-axis direction, and the two second absorbent pads (222) are arranged in the two intervals in a one-to-one correspondence; when both second isolation plates (412) are in the isolation position, the two second isolation plates (412) are located in the two intervals.

9. The sediment remediation device according to claim 8, characterized in that, The limiting component (5) includes a first limiting component and a second limiting component; the first limiting component includes a first limiting block (51) and a first limiting elastic element (52), and the second limiting component includes a second limiting block (53) and a second limiting elastic element (54); Each of the fixed seats (11) includes a first fixed seat wall (111) and a second fixed seat wall (112) disposed opposite to each other in the circumferential direction of the Z-axis, the first fixed seat wall (111) being disposed close to the first isolation plate (411) and the second fixed seat wall (112) being disposed close to the second isolation plate (412); The first fixed seat wall (111) is formed with a first limiting groove (113), at least a portion of the first limiting block (51) is disposed in the first limiting groove (113) and the first limiting block (51) and the first limiting groove (113) are connected by the first limiting elastic member (52); the first isolation plate (411) is located between two adjacent first fixed seat walls (111), and the two side walls of the first isolation plate (411) which are disposed opposite to each other in the axial direction of the first mounting ring (431) correspond to the two first limiting blocks (51) respectively; under the action of the two first limiting elastic members (52), the first isolation plate (411) can rotate between the two first limiting blocks (51); The second fixed seat wall (112) is formed with a second limiting groove (114), at least a portion of the second limiting block (53) is disposed in the second limiting groove (114) and the second limiting block (53) and the second limiting groove (114) are connected by the second limiting elastic member (54); the second isolation plate (412) is located between two adjacent second fixed seat walls (112), and the two side walls of the second isolation plate (412) which are disposed opposite to each other in the axial direction of the second mounting ring (432) correspond to the two second limiting blocks (53) respectively; under the action of the two second limiting elastic members (54), the second isolation plate (412) can rotate between the two second limiting blocks (53).

10. The sediment remediation device according to claim 9, characterized in that, The locking assembly (6) includes a first locking assembly, which includes a first locking block (61) and a magnetic mechanism; The first fixed base wall (111) is formed with a first slot (115), at least a portion of the first locking block (61) is disposed in the first slot (115) and a magnetic mechanism is disposed between the first locking block (61) and the first slot (115); the first isolation plate (411) has first locking grooves formed on both side walls that are disposed opposite to each other in the axial direction of the first mounting ring (431), and the two first locking grooves and the two first locking blocks (61) are disposed in a one-to-one correspondence; By controlling the energization or de-energization of the two magnetic mechanisms, the two first locking blocks (61) can be locked into the two first locking slots in a one-to-one correspondence, thereby locking the first isolation plate (411) in the isolation position; or, the two first locking blocks (61) can be separated from the corresponding first locking slots respectively, thereby releasing the first isolation plate (411).

11. The sediment remediation device according to claim 9, characterized in that, The locking assembly (6) includes a second locking assembly, which includes a second locking block (62) and a locking elastic element (63); The second fixed base wall (112) has a second slot (116), at least a portion of the second locking block (62) is disposed in the second slot (116), and the locking elastic member (63) is disposed between the second locking block (62) and the second slot (116); the second isolation plate (412) has a second locking groove (413) on both sides of the second mounting ring (432) that are opposite to each other in the axial direction, and the two second locking grooves (413) and the two second locking blocks (62) are disposed in a one-to-one correspondence; the second locking groove (413) is a trapezoidal groove, and the side of the second locking block (62) near the second fixed base wall (112) has an inclined surface; When the second isolation plate (412) moves from the non-isolation position to the isolation position, under the action of the two locking elastic members (63), the two second locking blocks (62) are locked in the two second locking grooves (413) one by one. The trapezoidal groove and the inclined surface cooperate to lock the second isolation plate (412). When the second isolation plate (412) moves from the isolation position to the non-isolation position, the trapezoidal groove and the inclined surface separate, so that the second isolation plate (412) is released.

12. The sediment remediation device according to claim 5, characterized in that, The mounting base (11) has a valve fixing hole (117) that connects the interior and exterior of the housing (1). A one-way valve (33) is provided in the valve fixing hole (117), and the one-way valve (33) and the storage bladder (31) are connected through the guide pipe (32). The one-way valve (33) is configured such that the purifying agent in the storage bladder (31) can be discharged to the exterior of the housing (1) through the guide pipe (32), and objects outside the housing (1) cannot enter the storage bladder (31) through the guide pipe (32).

13. The sediment remediation device according to claim 12, characterized in that, The purification component (3) further includes an airbag (34), a compressed gas cylinder (35), and a ventilation pipe (36). The airbag (34) is disposed inside the storage bladder (31), and the compressed gas cylinder (35) is disposed on the fixed base (11). The shell wall of the housing (1) has a housing through-hole (13) at a position corresponding to the compressed gas cylinder (35), and the side wall of the storage bladder (31) has a storage bladder through-hole (311) at a position corresponding to the compressed gas cylinder (35). The ventilation pipe (36) passes through the housing through-hole (13) and the storage bladder through-hole (311), and the ventilation pipe (36) connects the compressed gas cylinder (35) and the airbag (34). When the compressed gas cylinder (35) vents gas into the air bag (34), the storage bag (31) can discharge a purifying agent into the bottom sediment.

14. The sediment remediation device according to claim 13, characterized in that, The fixed seat (11) is provided in four places, and the four fixed seats (11) are evenly spaced around the Z-axis; each fixed seat (11) forms at least one valve fixing hole (117), and each valve fixing hole (117) is provided with a one-way valve (33); The guide tube (32) is provided in multiple ways, and all of the multiple guide tubes (32) are connected to the storage bladder (31), and the multiple guide tubes (32) and the multiple one-way valves (33) are connected in a one-to-one correspondence; The storage bladder (31) can discharge the purifying agent to different locations in the sediment via multiple of the guide tubes (32).

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