Sediment remediation system

Abstract

The present invention discloses a sediment remediation system, which includes a slag cleaning and dehydration structure, comprising: a slag cleaning box body, inside which a first filter screen and a second filter screen are arranged from top to bottom. Above the first filter screen, there are a sludge water inlet and a slag outlet. Between the first filter screen and the second filter screen, there is a first water outlet. Below the second filter screen, there is a second water outlet. The aperture of the first filter screen is larger than that of the second filter screen. A dry mud discharge door is also arranged between the first filter screen and the second filter screen; a slag cleaning unit, which includes a pair of slag cleaning supports, slag cleaning rods, slag cleaning cylinders, a pair of special-shaped slag cleaning plates, and a slag cleaning belt; a dehydration unit, which includes a pair of sealing plates, a pair of opening doors, an opening cylinder, and a dewatering pump. The present invention can dehydrate, repair, reshape, and reset the dredged sediment in the lake area, improve the sediment remediation quality, shorten the riverbed treatment period, and further protect the ecological balance of the riverbed.

Description

Technical Field

[0001] The present invention relates to the technical field of water environment restoration and treatment. More specifically, the present invention relates to a sediment remediation system. Background Art

[0002] The lakeshore zone is an important transition area between lakes and terrestrial ecosystems, with ecological functions such as intercepting pollutants, preventing soil erosion, and providing habitats. With the accelerating pace of urbanization, due to the intensification of human activities such as sewage and wastewater discharge and land development, the ecological system of the lakeshore zone is gradually being damaged, eroded, and even losing its original ecological functions. Ecological dredging has become an important task for reducing the endogenous pollution of the bottom sediment and treating the water environment of the lake area. The toxic and harmful pollutants in the large amount of sediment generated after dredging can be enriched in organisms through biological action. It is of great significance to improve the water quality of the lakeshore zone through sediment remediation and restore and construct a complete aquatic ecosystem. Summary of the Invention

[0003] The present invention provides a sediment remediation system, which can dehydrate, remediate, reshape, and reset the dredged sediment in the lake area, improve the quality of sediment remediation, shorten the riverbed treatment cycle, and further protect the ecological balance of the riverbed.

[0004] To achieve these and other advantages in accordance with the present invention, there is provided a sediment remediation system, including a slag removal and dehydration structure, which includes:

[0005] A slag removal box body, inside which a first filter screen and a second filter screen are provided from top to bottom. Above the first filter screen, there are a mud and slag water inlet and a slag outlet. Between the first filter screen and the second filter screen, there is a first water outlet. Below the second filter screen, there is a second water outlet. The aperture of the first filter screen is larger than that of the second filter screen. A dry mud discharge door is also provided between the first filter screen and the second filter screen;

[0006] Scraping unit, which includes a pair of scraping brackets, a scraping rod, a scraping cylinder, a pair of special-shaped scraping plates, and a scraping belt. The bottoms of the pair of scraping brackets are vertically installed on the top of the scraping box body. The scraping rod is arranged between the pair of scraping brackets. The scraping rod is driven by the piston rod of the scraping cylinder to lift and lower in the vertical direction. The middle parts of the pair of special-shaped scraping plates are respectively hinged to the bottoms of the pair of scraping brackets through the first hinge shaft. The upper parts of the pair of special-shaped scraping plates are provided with strip holes and are staggered and hinged to the lower end of the scraping rod through the second hinge shaft. The pair of special-shaped scraping plates can rotate around the first hinge shaft and the second hinge shaft. The scraping belt is arranged between the pair of special-shaped scraping plates. A plurality of rows of scraping teeth are equidistantly arranged on the scraping belt. When the scraping rod descends to a predetermined height, that is, the lower end of the scraping rod slides to the lower end parts of the pair of strip holes, the included angle of the pair of special-shaped scraping plates increases to separate from the scraping belt, that is, the bottoms of the pair of special-shaped scraping plates and the first filter screen form a slag inlet space. When the scraping rod rises to a predetermined height, that is, the lower end of the scraping rod slides to the middle parts of the pair of strip holes, the included angle of the pair of special-shaped scraping plates shrinks to just close the scraping belt, that is, the bottoms and the inner sides of the pair of special-shaped scraping plates are respectively attached to the first filter screen and the scraping belt;

[0007] Dehydration unit, which includes a pair of sealing plates, a pair of opening doors, a pair of opening cylinders, and a dewatering pump. The pair of sealing plates and the pair of opening doors are located between the first filter screen and the second filter screen. The pair of sealing plates are internally connected to the inclined inner wall of the scraping box body and are fixedly connected to the outer shaft sleeves of the pair of opening doors at the bottom. The pair of opening cylinders are located outside the scraping box body. The pair of opening cylinders extend into the scraping box body through connecting rods and are fixedly connected to the outer rotating shafts of the pair of opening doors through L-shaped rotating rods. When the piston rod of the pair of opening cylinders contracts to a predetermined length, that is, the inner sides of the pair of opening doors are closed, forming a muddy water storage cavity with the pair of sealing plates. When the piston rod of the pair of opening cylinders extends to a predetermined length, that is, the inner sides of the pair of opening doors rotate downward, forming a leakage space. The dewatering pump is located outside the scraping box body, and the communication port is located below the second filter screen.

[0008] Preferably, the box body is provided with a viewing window. The number of the first water outlets is multiple groups and they are distributed at different heights. Each group includes a plurality of first water outlets distributed circumferentially. The first water outlets are provided with L-shaped water outlet pipes.

[0009] Preferably, the box body is provided with a first positioning groove and a second positioning groove. The first filter screen and the second filter screen are respectively inserted into the first positioning groove and the second positioning groove to form a detachable filter screen structure.

[0010] Preferably, it further includes a repair structure, which is located downstream of the scraping and dewatering structure. The repair structure includes:

[0011] The repair box comprises an outer box and an inner box. The top of the outer box is closed and provided with a dry mud feed port and a repair agent feed port. The top of the outer box is open and provided with a cover. The top of the inner box is open and the inner box is mounted on the outer box by a latch.

[0012] The stirring unit comprises a stirring motor, a stirring shaft and stirring teeth. The stirring motor is arranged outside the repair box. The output shaft of the stirring motor is horizontally connected to the stirring shaft. The stirring shaft is horizontally penetrated in the repair box through a bearing. The stirring shaft is provided with the stirring teeth.

[0013] Preferably, it further comprises a cutting and segmenting structure, which is located downstream of the repairing structure, and the cutting and segmenting structure comprises:

[0014] The cutting unit comprises a cutting transmission belt, a pair of side push plates, a side push cylinder, a cutting knife, and a cutting cylinder. The pair of side push plates are arranged on both sides of the cutting transmission belt. The pair of side push plates are driven by the side push cylinder to squeeze and repair the bottom mud. The cutting knife is arranged above the pair of side push plates. The cutting knife is lowered under the drive of the cutting motor to cut and repair the bottom mud.

[0015] The block division unit comprises a block division slide, a toggle rod, a toggle block and a toggle motor, wherein the block division slide receives the downstream side of the cutting transmission belt, the block division slide is tilted downward, a strip-shaped notch is arranged on the block division slide, the toggle rod comprises an L-shaped upper toggle rod and an L-shaped lower toggle rod which are fixedly connected, the fixed connection of the L-shaped upper toggle rod and the L-shaped lower toggle rod is hinged to the block division slide, the free ends of the L-shaped upper toggle rod and the L-shaped lower toggle rod are respectively provided with an upper toggle part and a lower toggle part facing the strip-shaped notch, and the upper toggle part is located downstream of the lower toggle part, the spacing between the upper toggle part and the lower toggle part is the width of the repaired bottom mud block, and the toggle motor The block is a quasi-circular structure, and the center of its chord is the eccentric point. The toggle block rotates around the eccentric point under the drive of the toggle motor, and the L-shaped lower toggle rod is arranged on the rotation path of the toggle block. The toggle block is arranged as follows: when the toggle block rotates to the inferior arc segment to butt against the L-shaped lower toggle rod, the lower toggle part is lower than the strip notch, the upper toggle part is close to the strip notch, and the upper toggle part intercepts several repaired bottom mud blocks; when the toggle block rotates to the superior arc segment to butt against the L-shaped lower toggle rod, the lower toggle part is higher than the strip notch, the upper toggle part is higher than the repaired bottom mud block, and a repaired bottom mud block is intercepted and released between the upper toggle part and the lower toggle part.

[0016] Preferably, the cutting and segmenting structure further comprises:

[0017] A preloading unit, which includes a preloading plate and a preloading cylinder. The preloading plate is arranged above a pair of side pushing plates and is located upstream of the cutting knife. The preloading plate is lowered under the drive of the preloading cylinder to flatten and repair the dredged sediment.

[0018] The present invention has at least the following beneficial effects:

[0019] First, the present invention sets a slag cleaning box to receive the mud and slag water mixture of the mud conveying pipe. A pair of special-shaped slag cleaning plates cooperate with a slag cleaning belt to gather and remove the mud and slag. The first filter screen performs a first interception, and the second filter screen performs a second interception. The dehydration unit performs a primary dehydration through sedimentation and solid-liquid separation, and a secondary dehydration through the pressure adsorption of a support water pump, reducing the volume of the dredged sediment, providing a pre-step for the dredged sediment repair, and facilitating the subsequent resource utilization of the dredged sediment.

[0020] Second, large-volume sundries and garbage enter the slag cleaning box along with the mud and slag water. After the first filter screen arranged in the slag cleaning box intercepts the sundries and garbage, the mud and water mixture is filtered into the lower space. The slag cleaning cylinder is arranged above the slag cleaning box, and the piston rod of the slag cleaning cylinder moves up and down in the vertical direction. A pair of special-shaped slag cleaning plates are of a panel structure, and their width is close to the width of the bottom of the slag cleaning box. A pair of special-shaped slag cleaning plates and a pair of slag cleaning brackets are connected through a first hinge shaft to form a first rotation point. The strip-shaped holes of a pair of special-shaped slag cleaning plates are used to install a second hinge shaft to form a second rotation point. A pair of special-shaped slag cleaning plates rotate around the first rotation point and the second rotation point. When the slag cleaning rod expands and contracts, the lower end (the second hinge shaft) of the slag cleaning rod moves in the strip-shaped hole to drive a pair of special-shaped slag cleaning plates to rotate, changing the included angle, that is, changing the distance between the bottom of a pair of special-shaped slag cleaning plates and the slag cleaning belt, and also changing the distance between the bottom of a pair of special-shaped slag cleaning plates and the first filter screen, thereby gathering a part of the sundries and garbage and sending them to the slag outlet by the slag cleaning belt. The slag cleaning belt can adopt a circulating conveyor belt, which is arranged along the width direction of the slag cleaning box, and the gathered sundries and garbage are raked away by teeth. The teeth can be set relatively densely to rake away the sundries and garbage along with the viscous dredged sediment.

[0021] Third, a pair of sealing plates are arranged on both sides of the length direction of the slag cleaning box, and are retracted and reduced in diameter downward. The sealing plates are fixedly connected to the shaft sleeve to prevent the rotation of the shaft from affecting the sealing plates. The split cylinder is arranged on the outside of the slag cleaning box, and the connecting rod extends into the slag cleaning box through the through hole. When the piston rod of the split cylinder is extended, the L-shaped rotating rod rotates around the rotating shaft in the vertical plane, thereby driving the split door to open. When the split door is closed, the mud and water mixture is collected in the mud and water storage chamber formed by the pair of sealing plates and the split door for static sedimentation and stratification. The upper clear liquid is discharged from the first water outlet, leaving a small amount of water, and then the split door is opened. The double-door leaks material to the second filter screen, and the remaining water is discharged from the filter holes. The double-door is closed, and the water pump is turned on to increase the vacuum degree and further discharge the combined water, so that the water content in the dry mud is less than 60%, and the mud is taken out from the dry mud unloading door to enter the next process. Since the amount of water in each dehydration operation is different, multiple groups of first water outlets at different heights are set, and the number of first water outlets is multiple, which is convenient for rapid dehydration. An L-shaped water outlet pipe is set to achieve atmospheric pressure drainage and improve efficiency. The first filter screen and the second filter screen are configured to be pullable and detachable, which is convenient for replacement, cleaning and unloading.

[0022] Fourth, the dry mud is sent into the repair box and the repair agent is added. The selection of the repair agent is not the invention point of the present application. Conventional chemical or biological repair agents can be used. The inner box and the outer box can be columnar or rectangular, and they only need to be coaxially arranged. When the inner box and the outer box are locked by a latch, the stirring motor is started to rotate the stirring shaft to achieve sufficient mixing of the repair agent and the dry mud and promote the repair effect. When the inner box is unlocked from the outer box, the inner box can be flipped over to help unloading, and the repaired bottom mud enters the next process. The box can be installed on the stirring shaft using a bracket with a bearing to further improve stability.

[0023] Fifth, the cutting transmission belt receives the repaired sludge and transports it to the cutting site. A pair of side push plates are longitudinally formed under the action of the side push cylinder, and the cutting knife is transversely formed under the action of the cutting cylinder, and the stacked repaired sludge is evenly cut into rectangular blocks placed in sequence. The spacing of a pair of side push plates is adjusted by the side push cylinder. The length of the cutting knife is exactly equal to the spacing of a pair of side push plates. There are multiple specifications of the cutting knife. The spacing of a pair of side push plates is adjusted according to actual needs, and the cutting knife is selected to cut the repaired sludge. The cut blocks are transported to the block chute. Due to its downward tilt setting, the repaired bottom mud cut blocks slide to the block position where the strip notch is located. The strip notch is aligned so that the upper toggle part, the lower toggle part, the L-shaped upper toggle rod, and the L-shaped lower toggle rod are fixedly connected to form a linkage structure, which is hinged to the block chute. When the toggle block pushes the L-shaped lower toggle rod, the L-shaped upper toggle rod and the L-shaped lower toggle rod move synchronously, and the upper toggle part and the lower toggle part move synchronously, and the L-shaped lower toggle rod and the toggle block are both located below the block chute (when the lower toggle part does not extend out of the strip notch). The toggle block forms a dynamic process of pushing the L-shaped lower toggle rod and then resetting during the rotation process. The toggle block is a circular structure, and the rotating shaft is installed at the eccentric position. The rotation process of the toggle block can make the toggle rod move more widely. The repair bottom mud cut blocks placed in sequence abut against the upper toggle part, and the toggle block rotates. At this time, the lower toggle part inserts the strip-shaped gap upward to intercept a repair bottom mud cut block from entering between the upper toggle part and the lower toggle part. The repair bottom mud cut blocks placed in sequence abut against the lower toggle part, and the toggle block continues to rotate. A repair bottom mud block intercepted between the moving parts is released, the toggle block continues to rotate, the upper toggle part and the lower toggle part are reset, and the repair bottom mud blocks placed in sequence slide forward again over the lower toggle part until they abut against the upper toggle part. This reciprocating process separates the repair bottom mud blocks placed in sequence into multiple repair bottom mud blocks with equal spacing, and enters the next process to plant aquatic plants. A pre-pressing unit is further added to level and pre-press the repair bottom mud before cutting. The width of the pre-pressing plate is the same as that of the cutting knife, which can be adjusted and selected according to actual needs.

[0024] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a working state of the slag cleaning and dehydration structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of another working state of the slag cleaning and dehydration structure of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the repair structure of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the cutting and partitioning structure of the present invention. Specific embodiments

[0029] The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it according to the description in the specification.

[0030] It should be understood that the terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0031] It should be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified; in the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected" and "set" should be understood in a broad sense. For example, they can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The orientation or positional relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention 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, and therefore cannot be understood as a limitation to the present invention.

[0032] As Figure 1-2 shown, the present invention provides a sediment remediation system, including a slag cleaning and dewatering structure, which includes:

[0033] A slag cleaning box 1, inside which a first filter screen 2 and a second filter screen 3 are provided from top to bottom. Above the first filter screen 2, there are a sludge water inlet and a slag outlet. Between the first filter screen 2 and the second filter screen 3, there is a first water outlet. Below the second filter screen 3, there is a second water outlet. The aperture of the first filter screen 2 is larger than that of the second filter screen 3. A dry mud discharge door is also provided between the first filter screen 2 and the second filter screen 3;

[0034] Scraping unit, which includes a pair of scraping brackets 4, scraping rods 5, scraping cylinders, a pair of special-shaped scraping plates 6, and a scraping belt 7. The bottoms of the pair of scraping brackets 4 are vertically installed on the top of the scraping box body 1. The scraping rods 5 are arranged between the pair of scraping brackets 4. The scraping rods 5 are driven by the piston rods of the scraping cylinders to move up and down in the vertical direction. The middle parts of the pair of special-shaped scraping plates 6 are respectively hinged to the bottoms of the pair of scraping brackets 4 through the first hinge shafts. The upper parts of the pair of special-shaped scraping plates 6 are provided with strip-shaped holes and are staggeredly hinged to the lower ends of the scraping rods 5 through the second hinge shafts. The pair of special-shaped scraping plates 6 can rotate around the first hinge shafts and the second hinge shafts. The scraping belt 7 is arranged between the pair of special-shaped scraping plates 6. A plurality of rows of scraping teeth are equidistantly arranged on the scraping belt 7. When the scraping rods 5 drop to a predetermined height, that is, the lower ends of the scraping rods 5 slide to the lower ends of the pair of strip-shaped holes, the included angle of the pair of special-shaped scraping plates 6 increases to separate from the scraping belt 7, that is, the bottoms of the pair of special-shaped scraping plates 6 and the first filter screen 2 form a slag inlet space. When the scraping rods 5 rise to a predetermined height, that is, the lower ends of the scraping rods 5 slide to the middle parts of the pair of strip-shaped holes, the included angle of the pair of special-shaped scraping plates 6 decreases to just close the scraping belt 7, that is, the bottoms and the inner sides of the pair of special-shaped scraping plates 6 are respectively in contact with the first filter screen 2 and the scraping belt 7;

[0035] Dehydration unit, which includes a pair of sealing plates 8, a pair of opening doors 9, a pair of opening cylinders 10, and a dewatering pump 11. The pair of sealing plates 8 and the pair of opening doors 9 are located between the first filter screen 2 and the second filter screen 3. The pair of sealing plates 8 are internally connected to the inclined inner wall of the scraping box body 1 and are fixedly connected to the outer sleeves of the pair of opening doors 9 at the bottom. The pair of opening cylinders 10 are located outside the scraping box body 1. The pair of opening cylinders 10 extend into the scraping box body 1 through connecting rods and are fixedly connected to the outer rotating shafts of the pair of opening doors 9 through L-shaped rotating rods. When the piston rods of the pair of opening cylinders 10 contract to a predetermined length, that is, the inner sides of the pair of opening doors 9 are closed to form a muddy water storage cavity with the pair of sealing plates 8. When the piston rods of the pair of opening cylinders 10 extend to a predetermined length, that is, the inner sides of the pair of opening doors 9 rotate downward to form a material leakage space. The dewatering pump 11 is located outside the scraping box body 1 and the communication port is located below the second filter screen 3.

[0036] In the above technical solution, the present invention uses the scraping box body 1 to receive the sludge water mixture of the sludge conveying pipe. The pair of special-shaped scraping plates 6 cooperate with the scraping belt 7 to gather and remove the sludge. The first filter screen 2 performs a primary interception, and the second filter screen 3 performs a secondary interception. The dehydration unit performs a primary dehydration through sedimentation solid-liquid separation and a secondary dehydration through the pressure adsorption of the support pump, reducing the volume of the bottom sludge, providing a pre-step for the bottom sludge repair, and facilitating the subsequent resource utilization of the bottom sludge.

[0037] Large volume of debris and garbage enters the slag cleaning box 1 with the mud and slag water. The first filter screen 2 set in the slag cleaning box 1 intercepts the debris and garbage and filters the mud and water mixture into the lower space. The slag cleaning cylinder is set above the slag cleaning box 1. The piston rod of the slag cleaning cylinder rises and falls in the vertical direction. A pair of special-shaped slag cleaning plates 6 are panel structures, and their width is close to the width of the bottom of the slag cleaning box. A pair of special-shaped slag cleaning plates 6 are connected to a pair of slag cleaning brackets 4 through a first hinge axis to form a first rotation position. The strip holes of the pair of special-shaped slag cleaning plates 6 are used to install the second hinge axis to form a second rotation position. The pair of special-shaped slag cleaning plates 6 rotate around the first rotation position and the second rotation position. The moving point rotates. When the slag cleaning rod 5 is extended or retracted, the lower end (the second hinge axis) of the slag cleaning rod 5 moves in the strip hole to drive the pair of special-shaped slag cleaning plates 6 to rotate, changing the angle, that is, changing the distance between the bottom of the pair of special-shaped slag cleaning plates 6 and the slag cleaning belt 7, and also changing the distance between the bottom of the pair of special-shaped slag cleaning plates 6 and the first filter screen 2, thereby gathering a part of the debris and garbage, and using the slag cleaning belt 7 to send it to the slag outlet. The slag cleaning belt 7 can be a circulating conveyor belt, which is arranged along the width direction of the slag cleaning box 1, and the gathered debris and garbage are picked up by the slag cleaning teeth. The slag cleaning teeth can be arranged densely to carry the debris and garbage away along with the sticky bottom mud.

[0038] A pair of sealing plates 8 are arranged on both sides of the slag cleaning box 1 in the length direction, and are retracted and reduced in diameter downward. The sealing plates 8 are fixedly connected to the shaft sleeve to prevent the rotation of the rotating shaft from affecting the sealing plates 8. The split cylinder 10 is arranged on the outside of the slag cleaning box 1, and the connecting rod extends into the slag cleaning box 1 through the through hole. When the piston rod of the split cylinder 10 is extended, the L-shaped rotating rod rotates around the rotating shaft in the vertical plane, thereby driving the split door 9 to open. When the split door 9 is closed, the mud and water mixture is stored in the mud and water storage chamber formed by the pair of sealing plates 8 and the split door 9, and is statically precipitated and stratified. The upper clear liquid is discharged from the first water outlet, and a small amount of water remains. Then the split door 9 is opened to leak the material to the second filter screen 3, and the remaining water is discharged from the filter hole. The split door 9 is closed, and the water pump is turned on to increase the vacuum degree and further discharge the bound water, so that the water content in the dry mud is less than 60%, and it is taken out from the dry mud unloading door to enter the next process.

[0039] In another technical solution, the box body is provided with a visual window, the number of the first water outlets is multiple groups, and they are distributed at different heights, each group includes multiple first water outlets distributed along the circumference, and the first water outlets are provided with L-shaped water outlet pipes. Since the water volume of each dehydration operation is different, multiple groups of first water outlets at different heights are provided, the number of first water outlets is multiple, which is convenient for rapid dehydration, and the L-shaped water outlet pipe is provided to achieve atmospheric pressure drainage and improve efficiency.

[0040] In another technical solution, the box body is provided with a first positioning groove and a second positioning groove. The first filter screen 2 and the second filter screen 3 are respectively inserted into the first positioning groove and the second positioning groove to form a detachable filter screen structure. The first filter screen 2 and the second filter screen 3 are arranged in a pullable and detachable form, which is convenient for replacement, cleaning and discharging of materials.

[0041] In another technical solution, as Figure 3 shown, a repair structure is further included, which is located downstream of the slag cleaning and dehydration structure. The repair structure includes:

[0042] A repair box body, which includes an outer box body 12 and an inner box body 13. A dry mud feed port and a repair agent feed port are provided at the closed top of the outer box body 12. A cover body is provided at the open top of the outer box body 12. The top of the inner box body 13 is open, and the inner box body 13 is installed in the outer box body 12 through a bolt;

[0043] A stirring unit, which includes a stirring motor 14, a stirring shaft 15 and stirring teeth 16. The stirring motor 14 is arranged outside the repair box body. The output shaft of the stirring motor 14 is horizontally connected to the stirring shaft 15. The stirring shaft 15 passes through the repair box body horizontally through a bearing, and the stirring teeth 16 are arranged on the stirring shaft 15.

[0044] In the above technical solution, dry mud is fed into the repair box body and a repair agent is added. The selection of the repair agent is not the inventive point of this application, and conventional chemical and biological repair agents can be used. The inner box body 13 and the outer box body 12 can be cylindrical or cuboid, and only need to be coaxially arranged. When the inner box body 13 and the outer box body 12 are locked by bolts, the stirring motor 14 is started to rotate the stirring shaft 15 to realize the full mixing of the repair agent and the dry mud, so as to promote the repair effect. When the inner box body 13 is unlocked from the outer box body 12, the inner box body 13 can be turned over to help discharge materials, and the repaired bottom mud enters the next process. The box body can be installed on the stirring shaft 15 by a bracket with bearings to further improve the stability.

[0045] In another technical solution, as Figure 4 shown, a cutting and dividing structure is further included, which is located downstream of the repair structure. The cutting and dividing structure includes:

[0046] A cutting unit, which includes a cutting conveyor belt 17, a pair of side pushing plates 18, a side pushing cylinder, a cutting knife 19 and a cutting cylinder. The pair of side pushing plates 18 are arranged on both sides of the cutting conveyor belt 17. The pair of side pushing plates 18 are driven by the side pushing cylinder to approach and extrude the repaired bottom mud. The cutting knife 19 is arranged above the pair of side pushing plates 18, and the cutting knife 19 is driven by a cutting motor to lower to cut the repaired bottom mud;

[0047] The block unit includes a block chute 20, a toggle rod 21, a toggle block 22, and a toggle motor. The block chute 20 receives the downstream side of the cutting conveyor belt 17. The block chute 20 is inclined downward. The block chute 20 is provided with a strip-shaped notch. The toggle rod 21 includes an L-shaped upper toggle rod 21 and an L-shaped lower toggle rod 21 that are fixedly connected. The fixed connection of the L-shaped upper toggle rod 21 and the L-shaped lower toggle rod 21 is hinged to the block chute 20. The free ends of the L-shaped upper toggle rod 21 and the L-shaped lower toggle rod 21 are respectively provided with an upper toggle portion and a lower toggle portion facing the strip-shaped notch, and the upper toggle portion is located downstream of the lower toggle portion. The distance between the upper toggle portion and the lower toggle portion is the width of the repaired bottom sediment cut block. The toggle block 22 is of a quasi-circular structure, and the center of its chord is the eccentric position. The toggle block 22 rotates around the eccentric position under the drive of the toggle motor. The L-shaped lower toggle rod 21 is arranged on the rotation path of the toggle block 22. The toggle block 22 is arranged such that when the toggle block 22 rotates to the inferior arc section and abuts against the L-shaped lower toggle rod 21, the lower toggle portion is lower than the strip-shaped notch and the upper toggle portion is close to the strip-shaped notch, and the upper toggle portion intercepts a plurality of repaired bottom sediment cut blocks. When the toggle block 22 rotates to the superior arc section and abuts against the L-shaped lower toggle rod 21, the lower toggle portion is higher than the strip-shaped notch and the upper toggle portion is higher than the repaired bottom sediment cut block, and one repaired bottom sediment cut block is intercepted and released between the upper toggle portion and the lower toggle portion.

[0048] In the above technical solution, the cutting transmission belt 17 receives the repaired sludge and transports it to the cutting site. A pair of side push plates 18 are longitudinally formed under the action of the side push cylinder, and the cutting knife 19 is transversely formed under the action of the cutting cylinder, so that the piled repaired sludge is evenly cut into rectangular blocks placed in sequence. The spacing between the pair of side push plates 18 is adjusted by the side push cylinder. The length of the cutting knife 19 is exactly equal to the spacing between the pair of side push plates 18. There are multiple specifications of the cutting knife 19, and the spacing of the pair of side push plates 18 can be adjusted according to actual needs. The cutter 19 is selected, and the cut repair bottom mud blocks are transported to the block chute 20. Due to its downward tilt setting, the repair bottom mud blocks slide to the block position where the strip notch is located. The strip notch is aligned to make the upper toggle part, the lower toggle part, the L-shaped upper toggle rod 21, and the L-shaped lower toggle rod 21 fixedly connected to form a linkage structure, which is hinged to the block chute 20. When the toggle block 22 pushes the L-shaped lower toggle rod 21, the L-shaped upper toggle rod 21 and the L-shaped lower toggle rod 21 move synchronously, and the upper toggle part and the lower toggle part move synchronously. The L-shaped lower toggle rod 21 and the toggle block 22 are both located below the block chute 20 (when the lower toggle portion does not extend out of the strip notch). The toggle block 22 forms a dynamic process of pushing the L-shaped lower toggle rod 21 and then resetting during the rotation process. The toggle block 22 is a circular structure, and the rotating shaft is installed at an eccentric position. The rotation process of the toggle block 22 can make the toggle rod 21 move more widely. The repair bottom mud blocks placed in sequence abut against the upper toggle portion, and the toggle block 22 rotates. At this time, the lower toggle portion is inserted upward into the strip notch to intercept a repair bottom mud block. The mud blocks enter between the upper and lower moving parts, and the repaired bottom mud blocks placed in sequence abut against the lower moving part. The toggle block 22 continues to rotate, and a repaired bottom mud block intercepted between the upper and lower moving parts is released. The toggle block 22 continues to rotate, and the upper and lower moving parts are reset. The repaired bottom mud blocks placed in sequence slide forward again and pass over the lower moving part until they abut against the upper toggle part. This reciprocating process separates the repaired bottom mud blocks placed in sequence into multiple repaired bottom mud blocks with equal spacing, and enters the next process to plant aquatic plants.

[0049] In another technical solution, the cutting and blocking structure further includes:

[0050] The pre-pressing unit includes a pre-pressing plate and a pre-pressing cylinder. The pre-pressing plate is arranged above a pair of side push plates 18 and upstream of the cutting knife 19. The pre-pressing plate is driven by the pre-pressing cylinder to lower and flatten the repair bottom mud. A pre-pressing unit is further provided to flatten and pre-press the repair bottom mud before cutting. The width of the pre-pressing plate is equal to that of the cutting knife 19 and can be adjusted and selected according to actual needs.

[0051] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be obvious to those skilled in the art.

[0052] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those skilled in the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples described herein.

Claims

1. Sediment remediation system, characterized in that, It includes a slag cleaning and dehydration structure, which includes: A slag cleaning box, wherein a first filter screen and a second filter screen are arranged inside the box from top to bottom, a sludge water inlet and a sludge outlet are arranged above the first filter screen, a first water outlet is arranged between the first filter screen and the second filter screen, a second water outlet is arranged below the second filter screen, the aperture of the first filter screen is larger than that of the second filter screen, and a dry mud discharge door is also arranged between the first filter screen and the second filter screen; The slag cleaning unit comprises a pair of slag cleaning brackets, a slag cleaning rod, a slag cleaning cylinder, a pair of special-shaped slag cleaning plates, and a slag cleaning belt. The bottom of the pair of slag cleaning brackets is vertically installed on the top of the slag cleaning box. The slag cleaning rod is arranged between the pair of slag cleaning brackets. The slag cleaning rod is lifted and lowered in the vertical direction under the drive of the piston rod of the slag cleaning cylinder. The middle parts of the pair of special-shaped slag cleaning plates are respectively hinged to the bottom of the pair of slag cleaning brackets through the first hinge shaft. The upper parts of the pair of special-shaped slag cleaning plates are provided with strip holes and are staggered and hinged to the lower ends of the slag cleaning rods through the second hinge shaft. The pair of special-shaped slag cleaning plates can rotate around the first hinge shaft and the second hinge shaft. The slag cleaning belt is provided with multiple rows of slag cleaning teeth at equal intervals. When the slag cleaning rod is lowered to a predetermined height, that is, the lower end of the slag cleaning rod slides to the lower end of a pair of strip holes, the angle between the pair of special-shaped slag cleaning plates increases to be separated from the slag cleaning belt, that is, the bottom of the pair of special-shaped slag cleaning plates and the first filter screen form a slag inlet space. When the slag cleaning rod is raised to a predetermined height, that is, the lower end of the slag cleaning rod slides to the middle of the pair of strip holes, the angle between the pair of special-shaped slag cleaning plates is reduced to just close the slag cleaning belt, that is, the bottom and inner side of the pair of special-shaped slag cleaning plates are respectively in contact with the first filter screen and the slag cleaning belt. A dehydration unit comprises a pair of sealing plates, a split door, a split cylinder and a dehydration pump. The pair of sealing plates and the split door are located between the first filter screen and the second filter screen. A pair of sealing plates are obliquely connected to the inner wall of the slag cleaning box, and the bottom is fixedly connected to the outer shaft sleeve of the split door. The split cylinder is located outside the slag cleaning box. The split cylinder extends into the slag cleaning box through a connecting rod and is fixedly connected to the outer rotating shaft of the split door through an L-shaped rotating rod. The piston rod of the split cylinder is retracted to a predetermined length, that is, the inner side of the split door is closed to form a mud and water receiving chamber with the pair of sealing plates. The piston rod of the split cylinder is extended to a predetermined length, that is, the inner side of the split door is rotated downward to form a leakage space. The dehydration pump is located outside the slag cleaning box, and the connecting port is located below the second filter screen.

2. The sediment remediation system according to claim 1, characterized in that, The box body is provided with a visual window, the first water outlets are provided in a plurality of groups and are distributed at different heights, each group includes a plurality of first water outlets distributed along the circumferential direction, and the first water outlets are provided with L-shaped water outlet pipes.

3. The sediment remediation system according to claim 1, characterized in that, The box body is provided with a first positioning groove and a second positioning groove, and the first filter screen and the second filter screen are respectively inserted into the first positioning groove and the second positioning groove to form a detachable filter screen structure.

4. The sediment remediation system according to claim 1, wherein, It also includes a repair structure, which is located downstream of the slag cleaning and dehydration structure, and the repair structure includes: The repair box comprises an outer box and an inner box. The top of the outer box is closed and provided with a dry mud feed port and a repair agent feed port. The top of the outer box is open and provided with a cover. The top of the inner box is open and the inner box is mounted on the outer box by a latch. The stirring unit comprises a stirring motor, a stirring shaft and stirring teeth. The stirring motor is arranged outside the repair box. The output shaft of the stirring motor is horizontally connected to the stirring shaft. The stirring shaft is horizontally penetrated in the repair box through a bearing. The stirring shaft is provided with the stirring teeth.

5. The sediment remediation system according to claim 4, characterized in that, It also includes a cutting and segmenting structure, which is located downstream of the repair structure, and the cutting and segmenting structure includes: The cutting unit comprises a cutting transmission belt, a pair of side push plates, a side push cylinder, a cutting knife, and a cutting cylinder. The pair of side push plates are arranged on both sides of the cutting transmission belt. The pair of side push plates are driven by the side push cylinder to squeeze and repair the bottom mud. The cutting knife is arranged above the pair of side push plates. The cutting knife is lowered under the drive of the cutting motor to cut and repair the bottom mud. The block division unit comprises a block division slide, a toggle rod, a toggle block and a toggle motor, wherein the block division slide receives the downstream side of the cutting transmission belt, the block division slide is tilted downward, a strip-shaped notch is arranged on the block division slide, the toggle rod comprises an L-shaped upper toggle rod and an L-shaped lower toggle rod which are fixedly connected, the fixed connection of the L-shaped upper toggle rod and the L-shaped lower toggle rod is hinged to the block division slide, the free ends of the L-shaped upper toggle rod and the L-shaped lower toggle rod are respectively provided with an upper toggle part and a lower toggle part facing the strip-shaped notch, and the upper toggle part is located downstream of the lower toggle part, the spacing between the upper toggle part and the lower toggle part is the width of the repaired bottom mud block, and the toggle motor The block is a quasi-circular structure, and the center of its chord is the eccentric point. The toggle block rotates around the eccentric point under the drive of the toggle motor, and the L-shaped lower toggle rod is arranged on the rotation path of the toggle block. The toggle block is arranged as follows: when the toggle block rotates to the inferior arc segment to butt against the L-shaped lower toggle rod, the lower toggle part is lower than the strip notch, the upper toggle part is close to the strip notch, and the upper toggle part intercepts several repaired bottom mud blocks; when the toggle block rotates to the superior arc segment to butt against the L-shaped lower toggle rod, the lower toggle part is higher than the strip notch, the upper toggle part is higher than the repaired bottom mud block, and a repaired bottom mud block is intercepted and released between the upper toggle part and the lower toggle part.

6. The sediment remediation system according to claim 5, characterized in that, The cutting and segmenting structure further comprises: The pre-pressing unit comprises a pre-pressing plate and a pre-pressing cylinder. The pre-pressing plate is arranged above a pair of side push plates and upstream of the cutting knife. The pre-pressing plate is lowered by the pre-pressing cylinder to flatten the repaired bottom mud.

Images