Equipment and method for dewatering and solidifying silt used in inland waterway dredging

Abstract

This invention provides a dewatering and solidification device and method for dredged sludge in inland waterways, belonging to the field of waterway dredging technology. The device includes a box with a feed inlet at the top, and further comprises: a discharge channel fixed to the inner wall of the box and connected to the feed inlet; a filter press assembly disposed within the box for filter pressing sludge; a guide trough disposed at one end of the filter press assembly for guiding the filter cake after pressing; a discharge trough disposed below the guide trough and connected to it; and several recessed holes at the bottom of the box communicating with the discharge trough; and a granulation preparation assembly. This invention solves the problems of slow dewatering, high pollution, and low resource utilization of dredged sludge by integrating filter pressing, dewatering, granulation, and hot air drying, achieving efficient dewatering and resource utilization of dredged sludge.

Description

Technical Field

[0001] This invention relates to the field of waterway dredging technology, specifically to a silt dewatering and solidification device and method for inland waterway dredging. Background Technology

[0002] Dredging is an underwater earthwork excavation project that involves clearing, widening, or deepening rivers, lakes, and other bodies of water using manpower or machinery. After the silt is completed or can no longer meet the requirements for use, it needs to be disposed of by transporting the silt away for treatment.

[0003] Currently, the two most common methods for dredging silt are grab bucket dredging and rake suction dredging. However, the dredged silt is mostly disposed of using traditional methods such as stockpiling and landfilling, which causes a series of environmental and safety problems. The silt contains a large amount of water, which occupies transportation space, increases transportation costs, and is prone to spillage during transportation. Furthermore, direct stockpiling of silt with high water content will lead to settlement, making it difficult to meet urban environmental protection requirements. At the same time, it is a serious waste of resources. Dredged soil actually has reuse value. Reasonable utilization can reduce environmental impact, and silt dewatering and solidification treatment can add new usable soil resources. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a silt dewatering and solidification device and method for inland waterway dredging.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A silt dewatering and solidification device for inland waterway dredging includes a box with a feed inlet at the top, and further includes:

[0007] A feeding channel, which is fixed to the inner wall of the box and connected to the feeding port;

[0008] A filter press assembly, which is installed inside the housing, is used to filter sludge.

[0009] A feed chute is provided at one end of the filter press assembly and is used to guide the filter cake after filter pressing.

[0010] The material discharge chute is located below the material guide chute and is interconnected with the material guide chute. The bottom of the box body has several recessed holes that are connected to the material discharge chute.

[0011] And a pellet preparation component, which is disposed at the material chute and is used to prepare lightweight aggregates or aggregates;

[0012] The housing also includes a drive assembly for driving the pellet preparation assembly and the filter press assembly.

[0013] Preferably, the filter press assembly includes two rotating rods rotatably connected to the housing, movable gears mounted on the rotating rods, a roll mounted on the rotating rods, a filter cloth disposed between the two rolls, two first guide rollers arranged in the housing, a guide rod fixed in the housing, and a second guide roller movably disposed in the housing. The movable gears on the two rotating rods are meshed with each other. The end of the filter cloth away from one of the rolls passes sequentially through the first guide roller and the second guide roller and is connected to the other roll.

[0014] Preferably, the filter press assembly further includes a hydraulic cylinder fixed inside the housing and a pressure plate fixed below the hydraulic cylinder. A baffle for blocking the discharge port of the material feeding channel is fixed on the pressure plate. The filter cloth between the two first guide rollers is arranged in a double layer along the path. A filter screen plate is provided between the double-layered filter cloth on the inner wall of the housing.

[0015] Preferably, each of the first guide rollers includes a fixed rod fixedly mounted on the inner walls of both sides of the housing and a rotating roller rotatably connected to the fixed rod. The two fixed rods of the same first guide roller are arranged in a V-shape. The guide rod, pressure plate and filter plate are all adapted to the V-shape of the first guide roller.

[0016] Preferably, the drive assembly includes rotating rods rotatably connected to both sides of the housing, an eccentric rod disposed between the two rotating rods, and a drive motor fixed to the housing for driving one of the rotating rods to rotate. Each of the rotating rods and one of the rotating rods is provided with a synchronous pulley, and a synchronous belt is provided between the two synchronous pulleys.

[0017] Preferably, a first swing rod is rotatably mounted on the eccentric rod, and a movable plate is movably connected to the end of the first swing rod away from the eccentric rod. The movable plate is slidably connected to the inner wall of the box, and two rotating tubes are rotatably connected to the movable plate. The filter is arranged between the two rotating tubes. An elastic telescopic plate is fixed to the inner wall of the box through a support plate, and the telescopic end of the elastic telescopic plate is connected to a second guide roller.

[0018] Preferably, the pellet preparation assembly includes a second swing rod rotatably connected to the eccentric rod and an extrusion block movably connected to the end of the second swing rod away from the eccentric rod, the extrusion block being slidably connected in the discharge trough.

[0019] Preferably, the inner wall of the box is rotatably connected to a rotating shaft, a driven gear is provided on the rotating shaft, the extrusion block is fixed with a rack plate that meshes with the driven gear through a connecting plate, and a cutter that moves against the outer wall of the box is fixed on the rotating shaft.

[0020] Preferably, it also includes a conveyor located below the material chute, and a drying device is mounted on the frame of the conveyor.

[0021] This invention also discloses a method for dewatering and solidifying silt used in inland waterway dredging, which involves processing the silt using an inland waterway dredging dewatering and solidification device, and includes the following steps:

[0022] S1: Dredged sludge enters the box through the inlet and falls onto the filter cloth surface through the discharge channel. At this time, the sludge is located on the filter cloth between two first guide rollers arranged in a V-shape. The V-shaped structure prevents sludge from leaking to the side.

[0023] S2: During the sludge feeding process, the drive motor starts and drives the two rotating rods to rotate synchronously through the synchronous pulley and synchronous belt. One drum releases the filter cloth, and the other winds up the filter cloth, so that the sludge is evenly spread on the filter pressing area and avoids local accumulation.

[0024] S3: Pause the drive motor, start the hydraulic cylinder to push the pressure plate down, pressurize the sludge, and the baffle simultaneously blocks the discharge channel outlet to prevent new sludge from entering. Under pressure, water is discharged through the double-layer filter cloth and the middle filter screen plate and collects at the bottom of the box. The sludge solidifies into a filter cake on the filter cloth.

[0025] S4: After the hydraulic cylinder is reset, the drive motor is restarted, the filter cloth continues to be driven, and the filter cake moves with the filter cloth to the turning point of the first guide roller and automatically falls off, sliding into the discharge chute through the guide chute.

[0026] The rotation of the eccentric rod drives the moving plate through the first swing rod, causing the two rotating tubes on the moving plate to pull the filter cloth to swing back and forth in the water, removing impurities from the filter cloth pores and maintaining water permeability;

[0027] The eccentric rod simultaneously drives the second swing rod, pushing the extrusion block to reciprocate laterally in the material chute, extruding the filter cake through the concave hole to form strip-shaped mud strips;

[0028] S5: The rack plate moves with the extrusion block, meshes with the driven gear to drive the rotating shaft to rotate, so that the cutter cuts the mud strip into granules;

[0029] The granules fall into the conveyor and are quickly dehydrated and solidified by the drying equipment.

[0030] As can be seen from the above technical solutions, the present invention has the following beneficial effects:

[0031] 1. In this invention, the integrated process of pressure filtration dewatering, granule preparation and hot air drying solves the problems of slow dewatering, high pollution and low resource utilization of dredged silt in inland rivers, and realizes efficient dewatering and resource utilization of dredged silt.

[0032] 2. In this invention, the continuous feeding and discharging of sludge is achieved by winding and releasing the filter cloth with a roller. Hydraulic filtration and mechanical conveying work together to improve processing efficiency. The filter cloth is driven between the first guide roller and the second guide roller, so that the sludge that falls on the filter cloth during feeding moves with the filter cloth, avoiding the accumulation of sludge in one place, which would affect the subsequent filtration of sludge by the pressure plate.

[0033] 3. In this invention, by designing an automatic cleaning mechanism, the filter cloth is in a swinging state, thereby removing impurities from the gaps in the filter cloth and solving the problem of easy clogging and frequent replacement of the filter cloth in the transmission equipment.

[0034] 4. In this invention, by integrating granulation and drying functions, usable lightweight aggregate is directly produced. Moreover, the granular structure increases the heat exchange area and accelerates the drying process, solving the problem that the sludge still has a high moisture content after traditional dewatering and is difficult to use directly. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0036] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0037] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 3 ;

[0038] Figure 4 This is a schematic diagram of the box structure of the present invention;

[0039] Figure 5 This is a cross-sectional structural diagram of the housing of the present invention;

[0040] Figure 6 For the present invention Figure 5 Enlarged structural diagram of section A in the middle;

[0041] Figure 7 For the present invention Figure 5 Enlarged structural diagram of section B;

[0042] Figure 8 This is a schematic diagram of the cross-sectional structure of the box body of the present invention;

[0043] Figure 9 This is a schematic diagram of the external structure of the rotating rod of the present invention;

[0044] Figure 10 This is a schematic diagram of the external structure of the first swing arm of the present invention;

[0045] Figure 11 This is a schematic diagram of the structure of the first guide roller of the present invention.

[0046] In the diagram: 1. Box body; 101. Feed inlet; 2. Discharge channel; 3. Guide chute; 4. Drop chute; 401. Concave hole; 5. Rotating rod; 501. Movable gear; 502. Roller; 503. Filter cloth; 504. First guide roller; 5041. Fixed rod; 5042. Rotating roller; 505. Guide rod; 506. Second guide roller; 6. Hydraulic cylinder; 601. Pressure plate; 6011. Baffle; 602. Filter screen plate; 7. Drive motor; 701. Rotating rod; 702. Eccentric rod; 8. Synchronous pulley; 9. First swing rod; 901. Moving plate; 902. Rotating tube; 10. Elastic telescopic plate; 11. Second swing rod; 111. Extrusion block; 12. Rotating shaft; 121. Driven gear; 122. Rack plate; 123. Cutter; 13. Conveyor; 131. Drying equipment. Detailed Implementation

[0047] A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0048] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0049] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A silt dewatering and solidification device for inland waterway dredging includes a box 1 with a feed inlet 101 at the top, and further includes: a discharge channel 2, a filter press assembly, a guide trough 3, a discharge trough 4, and a granulation preparation assembly; the discharge channel 2 is fixed to the inner wall of the box 1 and communicates with the feed inlet 101; the filter press assembly is installed inside the box 1 for filter pressing silt; the guide trough 3 is installed at one end of the filter press assembly for guiding the filter cake after filter pressing; the discharge trough 4 is installed below the guide trough 3 and communicates with it; the bottom of the box 1 has several recesses 401 that communicate with the discharge trough 4; the granulation preparation assembly is installed at the discharge trough 4 for preparing lightweight aggregates or aggregates; wherein, the box 1 is also equipped with a drive assembly for driving the granulation preparation assembly and the filter press assembly.

[0050] Specifically, dredged sludge falls from the inlet 101 through the discharge channel 2 into the filter press assembly area. The filter press assembly squeezes the sludge, and the wastewater in the sludge is discharged under pressure and falls onto the lower side of the housing 1. The sludge is squeezed into a filter cake, thereby achieving the dewatering of the sludge, reducing the space occupied by the sludge, and thus reducing the subsequent transportation cost of the sludge. As the filter press assembly operates, the sludge falls off the filter press assembly and falls from the guide chute 3 into the discharge chute 4. When the drive assembly works, it drives the granulation assembly to move, which in turn moves the discharge chute. The filter cake within 4 is processed into granules, which increases the contact area between the silt and air, facilitating rapid solidification. On the other hand, the granular lightweight aggregate combines convenient transportation and engineering applicability, promoting the transformation of dredged soil from "waste" to "resource". It can be used for roadbed filling or ecological brick production, realizing resource utilization. Through the integrated process of pressure filtration dewatering, granule preparation and hot air drying, the problems of slow dewatering, high pollution and low resource utilization of inland river dredged silt are solved, realizing efficient dewatering and resource utilization of dredged silt.

[0051] Reference Figure 5 , Figure 6 , Figure 8 and Figure 9 As a preferred technical solution in this embodiment, the filter press assembly includes two rotating rods 5 rotatably connected inside the housing 1, a movable gear 501 disposed on the rotating rods 5, a roller 502 disposed on the rotating rods 5, a filter cloth 503 disposed between the two rollers 502, two first guide rollers 504 arranged inside the housing 1, a guide rod 505 fixed inside the housing 1, and a second guide roller 506 movably disposed inside the housing 1. The two rotating rods 5 achieve synchronous reverse rotation through the meshing movable gear 501, driving the roller 502 to release / rewind the filter cloth 503. The end of the filter cloth 503 away from one of the rollers 502 passes sequentially through the first guide roller 504 and the second guide roller 506 and is connected to the other roller 502.

[0052] Furthermore, the filter press assembly also includes a hydraulic cylinder 6 fixed inside the housing 1 and a pressure plate 601 fixed below the hydraulic cylinder 6. A baffle 6011 for blocking the outlet of the feeding channel 2 is fixed on the pressure plate 601. When pressing down, the baffle 6011 simultaneously blocks the outlet of the feeding channel 2, preventing new sludge from entering and ensuring that the filter press area is sealed. The filter cloth 503 between the two first guide rollers 504 is arranged in a double layer along the path. A filter screen plate 602 is provided between the double-layered filter cloth 503 on the inner wall of the housing 1. The filter screen plate 602 serves as a rigid support layer. When the hydraulic cylinder 6 drives the pressure plate 601 to press down, the sludge is sealed between the filter cloth 503 on the upper side of the filter screen plate 602 and the pressure plate 601. The filter screen plate 602 evenly distributes the pressure to prevent the filter cloth 503 from being deformed or damaged locally.

[0053] Specifically, the rotating rod 5 rotates under the drive of the drive assembly, and the two rotating rods 5 rotate synchronously under the meshing of the movable gear 501. One drum 502 releases the filter cloth 503, and the other rewinds the filter cloth 503, forming a double drum 502 continuous cloth feeding system. The sludge falls onto the filter cloth 503 on the upper side of the filter screen plate 602. The hydraulic cylinder 6 pushes the pressure plate 601 down, and the baffle 6011 blocks the outlet of the discharge channel 2, blocking the feeding. The pressure plate 601 applies pressure to the sludge at the filter cloth 503 on the upper side of the filter screen plate 602. Water passes through the filter cloth 503 and the filter screen plate 602 and falls to the bottom side of the box 1. The filter screen plate 602 provides rigid support to prevent the filter cloth 503 from collapsing.

[0054] Reference Figure 5 and Figure 11 As a preferred technical solution in this embodiment, each first guide roller 504 includes a fixed rod 5041 fixedly mounted on the inner walls of both sides of the housing 1 and a rotating roller 5042 rotatably connected to the fixed rod 5041. The rotating roller 5042 is connected to the fixed rod 5041 through a bearing and can rotate freely, reducing the transmission resistance of the filter cloth 503. The two fixed rods 5041 of the same first guide roller 504 are arranged in a V-shape. The guide rod 505, the pressure plate 601, and the filter screen plate 602 are all adapted to the V-shape of the first guide roller 504. The guide rod 505 adopts an inclined design with the same angle as the V-shape to guide the filter cloth 503 to move smoothly along the V-shaped path and avoid deviation. The bottom contour of the pressure plate 601 matches the included angle of the V-shape to ensure that the pressure is evenly distributed to the central area of ​​the filter cloth 503 when pressing down. The V-shaped structure not only guides the sludge to flow to the central area, but also provides stable support to prevent side leakage.

[0055] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 As a preferred technical solution in this embodiment, the drive assembly includes rotating rods 701 rotatably connected to both sides of the housing 1, an eccentric rod 702 disposed between the two rotating rods 701, and a drive motor 7 fixed on the housing 1 for driving one of the rotating rods 701 to rotate. A single drive motor 7 is directly connected to one rotating rod 701 through its output shaft, serving as the main power source of the system. The two ends of the rotating rod 701 are rotatably connected to the side wall of the housing 1 through bearings to ensure stable torque transmission. The eccentric rod 702 is rigidly connected between the two rotating rods 701, which can convert the rotational motion into periodic reciprocating motion. Both the rotating rod 701 and one of the rotating rods 5 are provided with synchronous pulleys 8, and a synchronous belt is provided between the two synchronous pulleys 8. The two synchronous pulleys 8 are meshed and connected by the synchronous belt. The synchronous belt is made of polyurethane-steel wire rope composite material with an arc tooth design to ensure a constant transmission ratio and wear resistance.

[0056] Specifically, after the drive motor 7 starts, the rotating rod 701 drives the eccentric rod 702 to rotate, and at the same time, the rotating rod 5 is driven to rotate synchronously through the synchronous wheel 8 and the synchronous belt. The speed ratio between the two is constant, realizing the linkage between the filter press assembly (filter cloth 503 drive) and the granule preparation assembly.

[0057] Reference Figure 5 , Figure 6 , Figure 9 and Figure 10 As a preferred technical solution in this embodiment, a first swing rod 9 is rotatably mounted on the eccentric rod 702. A movable plate 901 is movably connected to one end of the first swing rod 9 away from the eccentric rod 702. The movable plate 901 is slidably connected to the inner wall of the box 1. The eccentric rod 702 is connected to the rotating rod 701, converting the rotational motion into reciprocating swing. One end of the first swing rod 9 is hinged to the eccentric rod 702, and the other end is movably connected to the movable plate 901 through a fisheye bearing or a ball joint. The movable plate 901 slides laterally on the inner wall of the box 1, realizing the conversion of swing to linear motion. The movable plate 901 and the inner wall of the box 1 can be slidably connected by a linear guide rail, limiting its reciprocating motion to only the horizontal direction. Two rotating tubes 902 are rotatably connected to the movable plate 901. The filter cloth 503 is placed between the two rotating tubes 902. An elastic telescopic plate 10 is fixed to the inner wall of the box 1 through a support plate. The telescopic end of the elastic telescopic plate 10 is connected to the second guide roller 506, automatically compensating for the extension or contraction of the filter cloth 503 and maintaining constant tension.

[0058] Specifically, when the eccentric rod 702 rotates, the first swing rod 9 converts the circular motion into the linear reciprocating motion of the moving plate 901. The moving plate 901 drives the rotating tube 902 to move laterally, forcing the filter cloth 503 to swing in an "S" shape in the water. The shear force of the water flow peels away the silt particles in the pores of the filter cloth 503, preventing blockage. The elastic telescopic plate 10 has a built-in compression spring. When the filter cloth 503 is slack, it automatically extends, pushing the second guide roller 506 to move outward and tighten the filter cloth 503. When the filter cloth 503 is overloaded, it contracts to avoid tearing. It should be noted that when the roll 50 of the filter cloth 503 is released... After the filter cloth 503 is released, the staff can block the feed inlet 101 to restrict the sludge feed and control the drive motor 7 to drive the rotating rod 701 to rotate in the opposite direction. This causes the roller 502, which was originally winding up the filter cloth 503, to start releasing the filter cloth 503. The roller 502, which was originally releasing the filter cloth 503, starts winding up the filter cloth 503 again. After the filter cloth 503 is released again, the drive motor 7 can drive the rotating rod 701 to rotate in the forward direction to continue the sludge pressing and dewatering work. Since the filter cloth 503 is automatically cleaned, the water filtration effect of the filter cloth 503 can be guaranteed.

[0059] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As a preferred technical solution in this embodiment, the pellet preparation assembly includes a second swing rod 11 rotatably connected to the eccentric rod 702 and an extrusion block 111 movably connected to the end of the second swing rod 11 away from the eccentric rod 702. The extrusion block 111 is slidably connected in the discharge trough 4.

[0060] Furthermore, a rotating shaft 12 is rotatably connected to the inner wall of the housing 1, a driven gear 121 is provided on the rotating shaft 12, and a rack plate 122 that meshes with the driven gear 121 is fixed to the extrusion block 111 through a connecting plate. A cutter 123 that moves against the outer wall of the housing 1 is fixed on the rotating shaft 12.

[0061] Furthermore, it also includes a conveyor 13 located on the lower side of the material chute 4, and a drying device 131 is installed on the frame of the conveyor 13. The drying device 131 is existing technology and can be a hot air drying device 131.

[0062] Specifically, the filter cake after pressing falls into the discharge trough 4 through the guide trough 3. The internal moisture content is still relatively high. The rotation of the eccentric rod 702 drives the second swing rod 11 to swing, driving the extrusion block 111 to move laterally back and forth in the discharge trough 4. The extrusion block 111 forces the filter cake into the concave hole 401 to form a continuous strip of mud. The rack plate 122 is rigidly fixed on the connecting plate of the extrusion block 111 and meshes with the driven gear 121 for transmission. The driven gear 121 drives the rotating shaft 12 to rotate. A cutter 123 is installed at the end of the shaft. The gap between its cutting edge and the outer wall of the box 1 is adjustable to ensure precise cutting of the strip of filter cake. The cut granules fall freely to the conveyor 13. The surface area of ​​the granules in contact with the hot air is large. After being treated by the hot air of the drying equipment 131, the moisture content is further reduced, forming a lightweight aggregate that can be used directly. It can be used directly as lightweight aggregate for ecological slope protection or roadbed engineering, promoting the closed loop of sludge "dewatering-granulation-utilization".

[0063] This invention also discloses a method for dewatering and solidifying silt used in inland waterway dredging, which involves processing the silt using an inland waterway dredging dewatering and solidification device, and includes the following steps:

[0064] S1: Dredged sludge enters the box 1 through the feed inlet 101 and falls onto the surface of the filter cloth 503 through the discharge channel 2. At this time, the sludge is located on the filter cloth 503 between two first guide rollers 504 arranged in a V-shape. The V-shaped structure prevents the sludge from leaking to the side.

[0065] S2: During the sludge feeding process, the drive motor 7 starts, and drives the two rotating rods 5 to rotate synchronously through the synchronous wheel 8 and the synchronous belt. One drum 502 releases the filter cloth 503, and the other winds up the filter cloth 503, so that the sludge is evenly spread on the filter pressing area to avoid local accumulation.

[0066] S3: Pause the drive motor 7, start the hydraulic cylinder 6 to push the pressure plate 601 down to pressurize the sludge, and the baffle 6011 simultaneously blocks the outlet of the discharge channel 2 to prevent new sludge from entering. Under pressure, water is discharged through the double-layer filter cloth 503 and the middle filter screen plate 602 and collected at the bottom of the box 1. The sludge is solidified into a filter cake on the filter cloth 503.

[0067] S4: After the hydraulic cylinder 6 is reset, the drive motor 7 is restarted, the filter cloth 503 continues to drive, and the filter cake moves with the filter cloth 503 to the turning point of the first guide roller 504 and automatically falls off, sliding into the discharge chute 4 through the guide chute 3;

[0068] The eccentric rod 702 rotates and drives the moving plate 901 through the first swing rod 9, causing the two rotating tubes 902 on the moving plate 901 to pull the filter cloth 503 to swing back and forth in the water, removing impurities from the pores of the filter cloth 503 and maintaining water permeability.

[0069] The eccentric rod 702 simultaneously drives the second swing rod 11, pushing the extrusion block 111 to reciprocate laterally in the material discharge trough 4, extruding the filter cake through the concave hole 401 to form strip-shaped mud strips;

[0070] S5: The rack plate 122 moves with the extrusion block 111, meshes with the driven gear 121 to drive the rotating shaft 12 to rotate, so that the cutter 123 cuts the mud strip into granules;

[0071] The granules fall into the conveyor 13 and are quickly dehydrated and solidified by the drying equipment 131.

[0072] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A silt dewatering and solidification device for inland waterway dredging, comprising a box (1) with a feed inlet (101) at the top, characterized in that, Also includes: The material feeding channel (2) is fixed to the inner wall of the box (1) and connected to the feed inlet (101); A filter press assembly is installed inside the housing (1) and is used to filter sludge. The material guide trough (3) is set at one end of the filter press assembly and is used to guide the filter cake after filter pressing; The material discharge chute (4) is located on the lower side of the material guide chute (3) and is connected to the material guide chute (3). The bottom of the box body (1) is provided with several recessed holes (401) that are connected to the material discharge chute (4). And a pellet preparation component, which is set at the feed chute (4) and is used to prepare lightweight aggregates or aggregates; The housing (1) is also equipped with a drive assembly for driving the pellet preparation assembly and the filter press assembly. The filter press assembly includes two rotating rods (5) rotatably connected inside the housing (1), a movable gear (501) disposed on the rotating rods (5), a roll (502) disposed on the rotating rods (5), a filter cloth (503) disposed between the two rolls (502), two first guide rollers (504) arranged inside the housing (1), a guide rod (505) fixed inside the housing (1), and a second guide roller (506) movably disposed inside the housing (1). The movable gears (501) on the two rotating rods (5) are meshed with each other. The end of the filter cloth (503) away from one of the rolls (502) passes through the first guide roller (504) and the second guide roller (506) in sequence and is connected to the other roll (502). The filter press assembly also includes a hydraulic cylinder (6) fixed inside the housing (1) and a pressure plate (601) fixed on the lower side of the hydraulic cylinder (6). A baffle (6011) for blocking the discharge port of the feeding channel (2) is fixed on the pressure plate (601). The filter cloth (503) between the two first guide rollers (504) is arranged in a double layer along the path. A filter screen plate (602) is provided between the double-layered filter cloth (503) on the inner wall of the housing (1). Each of the first guide rollers (504) includes a fixed rod (5041) fixed on the inner walls of both sides of the housing (1) and a rotating roller (5042) rotatably connected to the fixed rod (5041). The two fixed rods (5041) of the same first guide roller (504) are arranged in a V-shape. The guide rod (505), the pressure plate (601) and the filter plate (602) are all adapted to the V-shape of the first guide roller (504).

2. The silt dewatering and solidification equipment for inland waterway dredging according to claim 1, characterized in that, The drive assembly includes a rotating rod (701) rotatably connected to both sides of the housing (1), an eccentric rod (702) disposed between the two rotating rods (701), and a drive motor (7) fixed on the housing (1) for driving one of the rotating rods (701) to rotate. Both the rotating rod (701) and one of the rotating rods (5) are provided with a synchronous pulley (8), and a synchronous belt is provided between the two synchronous pulleys (8).

3. The silt dewatering and solidification equipment for inland waterway dredging according to claim 2, characterized in that, A first swing rod (9) is rotatably mounted on the eccentric rod (702). A movable plate (901) is movably connected to one end of the first swing rod (9) away from the eccentric rod (702). The movable plate (901) is slidably connected to the inner wall of the box (1). Two rotating tubes (902) are rotatably connected to the movable plate (901). The filter cloth (503) is placed between the two rotating tubes (902). An elastic telescopic plate (10) is fixed to the inner wall of the box (1) through a support plate. The telescopic end of the elastic telescopic plate (10) is connected to the second guide roller (506).

4. The silt dewatering and solidification equipment for inland waterway dredging according to claim 3, characterized in that, The granule preparation assembly includes a second swing rod (11) rotatably connected to the eccentric rod (702) and an extrusion block (111) movably connected to the end of the second swing rod (11) away from the eccentric rod (702). The extrusion block (111) is slidably connected in the material discharge trough (4).

5. The silt dewatering and solidification equipment for inland waterway dredging according to claim 4, characterized in that, The inner wall of the box (1) is rotatably connected to a rotating shaft (12), and a driven gear (121) is provided on the rotating shaft (12). The extrusion block (111) is fixed with a rack plate (122) that meshes with the driven gear (121) through a connecting plate. A cutter (123) that moves against the outer wall of the box (1) is fixed on the rotating shaft (12).

6. The silt dewatering and solidification equipment for inland waterway dredging according to claim 5, characterized in that, It also includes a conveyor (13) located on the lower side of the chute (4), and a drying device (131) is mounted on the frame of the conveyor (13).

7. A method for dewatering and solidifying silt used in inland waterway dredging, comprising processing the silt using the dewatering and solidification equipment for inland waterway dredging as described in claim 6, characterized in that... Includes the following steps: S1: Dredged sludge enters the box (1) through the feed inlet (101) and falls onto the surface of the filter cloth (503) through the discharge channel (2). At this time, the sludge is located on the filter cloth (503) between two first guide rollers (504) arranged in a V shape. The V-shaped structure prevents the sludge from leaking to the side. S2: During the sludge feeding process, the drive motor (7) starts and drives the two rotating rods (5) to rotate synchronously through the synchronous wheel (8) and the synchronous belt. One drum (502) releases the filter cloth (503) and the other drum rewinds the filter cloth (503), so that the sludge is evenly spread in the filter pressing area to avoid local accumulation. S3: Pause the drive motor (7), start the hydraulic cylinder (6) to push the pressure plate (601) down, pressurize the sludge, and the baffle (6011) simultaneously blocks the outlet of the discharge channel (2) to prevent new sludge from entering. Under pressure, water is discharged through the double-layer filter cloth (503) and the middle filter screen plate (602) and collected at the bottom of the box (1). The sludge is solidified into a filter cake on the filter cloth (503). S4: After the hydraulic cylinder (6) is reset, the drive motor (7) is restarted, the filter cloth (503) continues to drive, and the filter cake moves with the filter cloth (503) to the turning point of the first guide roller (504) and automatically falls off, and slides into the discharge chute (4) through the guide chute (3); The eccentric rod (702) rotates and drives the moving plate (901) through the first swing rod (9), so that the two rotating tubes (902) on the moving plate (901) pull the filter cloth (503) to swing back and forth in the water, remove impurities from the pores of the filter cloth (503) and maintain water permeability; The eccentric rod (702) simultaneously drives the second swing rod (11), pushing the extrusion block (111) to move laterally back and forth in the discharge trough (4), extruding the filter cake through the concave hole (401) to form strip-shaped mud strips; S5: The rack plate (122) moves with the extrusion block (111), meshes with the driven gear (121) to drive the rotating shaft (12) to rotate, so that the cutter (123) cuts the mud strip into granules; The granules fall into the conveyor (13) and are quickly dehydrated and solidified by the drying equipment (131).

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