Sludge dewatering and curing equipment and method for inland waterway dredging

Abstract

The invention provides sludge dewatering and curing equipment and method for inland waterway dredging, and belongs to the technical field of waterway dredging. The sludge dewatering and curing equipment for dredging of the inland waterway comprises a box body with a feeding port formed in the top, and further comprises a discharging channel, a sludge dewatering and curing device, a sludge dewatering and curing device and a sludge dewatering and curing device, and the discharging channel is fixedly arranged on the inner wall of the box body and communicates with the feeding port; the filter pressing assembly is arranged in the box body and is used for filter pressing of sludge; the guide chute is arranged at one end of the filter pressing assembly and is used for guiding a filter cake subjected to filter pressing; the material falling groove is formed in the lower side of the material guiding groove and communicates with the material guiding groove, and a plurality of concave holes communicating with the material falling groove are formed in the bottom of the box body; and a pellet preparation assembly; through the integrated process of filter pressing dehydration, granule preparation and hot air drying, the problems of slow dehydration, high pollution and low resource utilization rate of the dredged sludge in the inland river are solved, and efficient dehydration and resource utilization of the dredged sludge are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of waterway dredging, and in particular to a sludge dehydration and solidification device and method for dredging inland waterways. Background Art

[0002] Dredging is the process of clearing, widening or deepening rivers, lakes and other water areas by using manpower or machinery to excavate underwater earth and stone. After the construction is completed or when the silt cannot meet the use requirements, it needs to be discarded, that is, the discarded silt needs to be transported out for treatment.

[0003] At present, grab dredging or rake suction dredging is commonly used. However, the dredged sludge is mostly treated by traditional methods such as stacking and landfilling, which causes a series of environmental and safety problems. The sludge contains a lot of water, which takes up transportation space and has high transportation costs. It is easy to leak during transportation. Moreover, directly landfilling the sludge with a high water content will cause settlement, which makes it difficult to meet the requirements of urban environmental protection regulations. At the same time, there is a serious waste of resources. Dredged soil actually has reuse value. Reasonable use can reduce environmental impact, and new available soil resources can be added through sludge dehydration and solidification treatment. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a sludge dehydration and solidification device and method for inland waterway dredging.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A sludge dehydration and solidification device for inland waterway dredging includes a box body with a feed port on the top, and also includes: A material discharge channel, the material discharge channel being fixedly arranged on the inner wall of the box and being communicated with the material feed port; A filter press assembly, which is arranged in the box and is used for filtering sludge; A material guide trough is provided at one end of the filter press assembly and is used to guide the filter cake after filtration; A blanking chute is provided at the lower side of the guide chute and is communicated with the guide chute. A plurality of recessed holes communicating with the blanking chute are provided at the bottom of the box body. and a granular material preparation component, which is arranged at the chute and is used to prepare lightweight aggregate or aggregate; The box body is also provided with a driving component for driving the granular material preparation component and the filter press component.

[0006] Preferably, the filter press assembly includes two rotating rods rotatably connected to the box body, a movable gear arranged on the rotating rod, a reel arranged on the rotating rod, a filter cloth arranged between the two reels, two first guide rollers arranged in the box body, a guide rod fixed in the box body and a second guide roller movably arranged in the box body, the movable gears on the two rotating rods are engaged with each other, and the end of the filter cloth away from one of the reels passes through the first guide roller, the second guide roller in sequence and is connected to the other reel.

[0007] Preferably, the filter press assembly also includes a hydraulic cylinder fixed in the box body and a pressure plate fixed on the lower side of the hydraulic cylinder, a baffle for blocking the discharge port of the 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, and a filter screen plate is provided on the inner wall of the box body between the double-layer filter cloth.

[0008] Preferably, each of the first guide rollers includes a fixed rod respectively fixed on the inner walls on both sides of the box body 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, and the guide rod, pressure plate and filter plate are all adapted to the V shape of the first guide roller.

[0009] Preferably, the driving assembly includes a rotating rod rotatably connected to both sides of the box body, an eccentric rod arranged between the two rotating rods, and a driving motor fixed on the box body for driving one of the rotating rods to rotate, and the rotating rod and one of the rotating rods are both provided with synchronous wheels, and a synchronous belt is provided between the two synchronous wheels.

[0010] Preferably, a first swing rod is rotatably provided on the eccentric rod, and the first swing rod is movably connected to a movable plate at one end away from the eccentric rod, and the movable plate is slidingly connected to the inner wall of the box, and two rotating tubes are rotatably connected to the movable plate, and the filter is arranged between the two rotating tubes, and 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 the second guide roller.

[0011] Preferably, the pellet preparation assembly includes a second swing rod rotatably connected to the eccentric rod and an extrusion block movably connected to one end of the second swing rod away from the eccentric rod, and the extrusion block is slidably connected in the blanking chute.

[0012] 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 meshing with the driven gear through a connecting plate, and a cutter is fixed on the rotating shaft to move against the outer wall of the box.

[0013] Preferably, it further comprises a conveyor arranged at the lower side of the blanking chute, and a drying device is installed on the frame of the conveyor.

[0014] The present invention also discloses a method for dehydrating and solidifying sludge used for dredging in inland waterways, which is processed by using a sludge dehydration and solidification device for dredging in inland waterways, and includes the following steps: S1: Dredged sludge enters the box through the feed port 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 the sludge from leaking sideways. S2: During the sludge discharge period, the drive motor starts, and drives the two rotating rods to rotate synchronously through the synchronous wheel and the synchronous belt. One drum releases the filter cloth, and the other reels the filter cloth, so that the sludge is evenly spread in the filter press area to avoid local accumulation; S3: The driving motor is paused, and the hydraulic cylinder is started to push the pressure plate downward to pressurize the sludge. The baffle simultaneously blocks the outlet of the discharge channel to prevent new sludge from entering. Under pressure, water is discharged through the double-layer filter cloth and the middle filter plate and collected at the bottom of the box. The sludge solidifies into a filter cake on the filter cloth. S4: After the hydraulic cylinder is reset, the drive motor is restarted, the filter cloth continues to drive, 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 drop chute through the guide chute; The eccentric rod rotates through the first swing rod to drive the moving plate, so that the two rotating tubes on the moving plate pull the filter cloth to swing back and forth in the water, removing impurities in the pores of the filter cloth and maintaining water permeability; The eccentric rod simultaneously drives the second swing rod, pushing the extrusion block to move back and forth horizontally in the blanking chute, squeezing the filter cake through the concave hole to form strips of mud; S5: The rack plate moves with the extrusion block, meshing with the driven gear to drive the rotating shaft to rotate, so that the cutter cuts the mud strips into granules; The pellets fall into the conveyor and are quickly dehydrated and solidified by the drying equipment.

[0015] It can be seen from the above technical solutions that the present invention has the following beneficial effects: 1. In the present invention, the problems of slow dehydration, high pollution and low resource utilization of inland river dredged sludge are solved through the integrated process of filter press dehydration, pellet preparation and hot air drying, and the efficient dehydration and resource utilization of dredged sludge are achieved.

[0016] 2. In the present invention, the filter cloth is wound and released by the drum to achieve continuous feeding and discharging of the sludge. The hydraulic filtration and mechanical transmission work together to improve the processing efficiency. The filter cloth is transmitted between the first guide roller and the second guide roller, so that the sludge dropped on the filter cloth during feeding moves with the filter cloth, avoiding the sludge from accumulating in one place and affecting the subsequent filtration work of the sludge by the pressure plate.

[0017] 3. In the present invention, an automatic cleaning mechanism is designed to put the filter cloth in a swinging state, thereby removing impurities in the gaps of the filter cloth, thereby solving the problem that the filter cloth of the transmission equipment is easily blocked and needs to be replaced frequently.

[0018] 4. In the present invention, by integrating granulation and drying functions, usable light aggregate is directly produced, and the granular structure increases the heat exchange area, accelerates the drying process, and solves the problem that the sludge after traditional dehydration still has a high moisture content and is difficult to be directly used. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 The overall structure of the present invention is shown in FIG. Figure 3 ; Figure 4 It is a schematic diagram of the box structure of the present invention; Figure 5 Schematic diagram of the cross-sectional structure of the box body of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of the middle part A; Figure 7 For the present invention Figure 5 A schematic diagram of the enlarged structure of the middle B part; Figure 8 It is a schematic diagram of the cross-sectional structure of the box body of the present invention; Figure 9 Schematic diagram of the external structure of the rotating rod of the present invention; Figure 10 Schematic diagram of the external structure of the first swing arm of the present invention; Figure 11 It is a structural schematic diagram of the first guide roller of the present invention.

[0020] In the figure: 1. box body; 101. feed port; 2. discharge channel; 3. guide trough; 4. blanking trough; 401. concave hole; 5. rotating rod; 501. movable gear; 502. reel; 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 plate; 7. drive motor; 701. rotating rod; 702. eccentric rod; 8. synchronous wheel; 9. first swing rod; 901. movable 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 DESCRIPTION

[0021] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions: Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 A sludge dehydration and solidification device for dredging inland waterways comprises a box body 1 with a feed port 101 on the top, and further comprises: a discharge channel 2, a filter press assembly, a guide trough 3, a blanking trough 4 and a pellet preparation assembly; the discharge channel 2 is fixedly arranged on the inner wall of the box body 1 and is communicated with the feed port 101; the filter press assembly is arranged in the box body 1 for filtering sludge; the guide trough 3 is arranged at one end of the filter press assembly for guiding the filter cake after filtering; the blanking trough 4 is arranged at the lower side of the guide trough 3 and is communicated with the guide trough 3, and a plurality of recessed holes 401 connected to the blanking trough 4 are arranged at the bottom of the box body 1; the pellet preparation assembly is arranged at the blanking trough 4 for preparing light aggregate or aggregate; wherein, a driving assembly for driving the pellet preparation assembly and the filter press assembly is also provided in the box body 1; Specifically, the dredged silt falls from the feed port 101 through the discharge channel 2 to the filter press assembly area, the filter press assembly squeezes the silt, and the sewage in the silt is discharged under pressure and falls on the lower side of the box body 1, and the silt is squeezed into a filter cake, thereby achieving the dehydration of the silt, reducing the space occupied by the silt, and thus reducing the subsequent transportation cost of the silt. As the filter press assembly runs, the silt falls from the filter press assembly and falls from the guide trough 3 into the discharge trough 4. When the drive assembly works, it drives the granular material preparation assembly to move, and the discharge trough 4. The filter cake in the filter is processed into granular material. On the one hand, it increases the contact area between the silt and the air, which is convenient for rapid solidification. On the other hand, the granular light aggregate has both 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 to realize resource utilization. Through the integrated process of filter pressing dehydration, granular material preparation and hot air drying, the problems of slow dehydration, high pollution and low resource utilization rate of inland river dredged silt are solved, and the efficient dehydration and resource utilization of dredged silt are realized.

[0023] Reference Figure 5 、 Figure 6 、 Figure 8 and Figure 9As a preferred technical solution of this embodiment, the filter press assembly includes two rotating rods 5 rotatably connected to the housing 1, a movable gear 501 provided on the rotating rods 5, a reel 502 provided on the rotating rods 5, a filter cloth 503 provided between the two reels 502, two first guide rollers 504 arranged in the housing 1, a guide rod 505 fixed in the housing 1, and a second guide roller 506 movably provided in the housing 1. The two rotating rods 5 are synchronously rotated in opposite directions by the mutually meshing movable gears 501, driving the reels 502 to release / reel the filter cloth 503. The end of the filter cloth 503 away from one of the reels 502 passes through the first guide roller 504 and the second guide roller 506 in sequence and is connected to the other reel 502. Furthermore, the filter press assembly also includes a hydraulic cylinder 6 fixed in the box body 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 feed channel 2 is fixed on the pressure plate 601. When the pressure is pressed down, the baffle 6011 simultaneously blocks the outlet of the feed channel 2 to block the entry of new sludge, thereby ensuring that the filter press interval is closed. The filter cloth 503 between the two first guide rollers 504 is arranged in a double layer along the path. A filter plate 602 is provided on the inner wall of the box body 1 between the double-layer filter cloth 503. The filter 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 plate 602 and the pressure plate 601. The filter plate 602 evenly distributes the pressure to prevent local deformation and damage of the filter cloth 503. Specifically, the rotating rod 5 rotates driven by the driving assembly, and the two rotating rods 5 rotate synchronously under the engagement of the movable gear 501. One reel 502 releases the filter cloth 503, and the other reels the filter cloth 503, forming a double-reel 502 continuous cloth feeding system. The sludge falls on the filter cloth 503 on the upper side of the filter plate 602, and the hydraulic cylinder 6 pushes the pressure plate 601 downward. The baffle 6011 blocks the outlet of the discharge channel 2 to block the feeding. The pressure plate 601 applies pressure to the sludge on the filter cloth 503 on the upper side of the filter plate 602. The moisture penetrates the filter cloth 503 and the filter plate 602 and falls to the bottom side of the box body 1. The filter plate 602 provides rigid support to prevent the filter cloth 503 from collapsing.

[0024] Reference Figure 5 and Figure 11, as the preferred technical solution of this embodiment, each first guide roller 504 includes a fixed rod 5041 fixed to the inner walls of both sides of the box body 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, thereby 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, and 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; the guide rod 505 adopts an inclined design with the same angle as the V shape, guiding the filter cloth 503 to move smoothly along the V-shaped path to avoid deviation, and the bottom contour of the pressure plate 601 matches the V-shaped angle to ensure that the pressure is evenly distributed to the center area of ​​the filter cloth 503 when pressing down; the V-shaped structure not only guides the silt to flow to the center area, but also provides stable support to prevent side leakage.

[0025] Reference Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As a preferred technical solution of this embodiment, the driving assembly includes a rotating rod 701 rotatably connected to both sides of the box body 1, an eccentric rod 702 arranged between the two rotating rods 701, and a driving motor 7 fixed to the box body 1 for driving one of the rotating rods 701 to rotate. The single driving motor 7 is directly connected to one rotating rod 701 through an output shaft 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 box body 1 through bearings to ensure stable torque transmission. The eccentric rod 702 is rigidly connected between the two rotating rods 701, which can convert rotational motion into periodic reciprocating motion; a synchronous wheel 8 is provided on the rotating rod 701 and one of the rotating rods 5, and a synchronous belt is provided between the two synchronous wheels 8. The two synchronous wheels 8 are meshed and connected by a synchronous belt. The synchronous belt is made of polyurethane-steel wire rope composite material and has an arc tooth design to ensure a constant transmission ratio and wear resistance. Specifically, after the drive motor 7 is started, 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 of the two is constant, realizing the linkage between the filter press assembly (filter cloth 503 transmission) and the pellet preparation assembly.

[0026] Reference Figure 5 、 Figure 6 、 Figure 9 and Figure 10The first end of the first swing arm 901 is connected to the eccentric rod 702, and the second end of the first swing arm 901 is connected to the eccentric rod 702. The eccentric rod 702 is connected to the rotating rod 701, and the rotating plate 901 is connected to the inner wall of the box body 1. The eccentric rod 702 is connected to the rotating rod 701, and the rotating plate 901 is converted into a reciprocating swing. One end of the first swing arm 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 body 1 to realize the conversion of the swing to the linear motion. The movable plate 901 and the inner wall of the box body 1 can be slidably connected by setting a linear guide rail, which limits its reciprocating motion only in the horizontal direction; the movable plate 901 is rotatably connected to two rotating tubes 902, and the filter cloth 503 is placed between the two rotating tubes 902. The inner wall of the box body 1 is fixed with an elastic telescopic plate 10 through a support plate. The telescopic end of the elastic telescopic plate 10 is connected to the second guide roller 506, which automatically compensates for the extension or contraction of the filter cloth 503 to maintain constant tension; Specifically, when the eccentric rod 702 rotates, the first swing rod 9 converts the circular motion into a linear reciprocating motion of the moving plate 901, and the moving plate 901 drives the rotating tube 902 to move horizontally, forcing the filter cloth 503 to swing in an "S" shape in the water. The shear force of the water flow peels off the silt particles in the pores of the filter cloth 503 to prevent clogging; the elastic telescopic plate 10 has a built-in compression spring, which automatically stretches when the filter cloth 503 is relaxed, pushing the second guide roller 506 to move outward to tension the filter cloth 503. When the filter cloth 503 is overloaded, it shrinks to avoid tearing; it should be noted that when the reel 500 of the filter cloth 503 is released, the filter cloth 503 is automatically stretched. After the two pairs of filter cloths 503 are released, the staff can block the feed port 101 to limit the sludge feeding, control the drive motor 7 to drive the rotating rod 701 to rotate in the opposite direction, so that the reel 502 that originally rolled up the filter cloth 503 changes to release the filter cloth 503, and the reel 502 that originally released the filter cloth 503 rolls up the filter cloth 503. When the filter cloth 503 is released again, the drive motor 7 can drive the rotating rod 701 to rotate forward to continue the sludge pressure filtration and dehydration work. Since the filter cloth 503 is automatically cleaned, the water filtering effect of the filter cloth 503 can be guaranteed.

[0027] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 8 As a preferred technical solution of this embodiment, the pellet preparation assembly includes a second swinging rod 11 rotatably connected to the eccentric rod 702 and an extrusion block 111 movably connected to the end of the second swinging rod 11 away from the eccentric rod 702, and the extrusion block 111 is slidably connected to the blanking chute 4; Furthermore, the inner wall of the box body 1 is rotatably connected to a rotating shaft 12, on which a driven gear 121 is provided. The extrusion block 111 is fixed with a rack plate 122 meshing with the driven gear 121 through a connecting plate, and a cutter 123 is fixed on the rotating shaft 12 to movably abut against the outer wall of the box body 1; Furthermore, it also includes a conveyor 13 arranged at the lower side of the blanking chute 4, and a drying device 131 is installed on the frame of the conveyor 13. The drying device 131 is a prior art and can be a hot air drying device 131.

[0028] Specifically, the filter cake after filtration falls into the blanking chute 4 through the guide chute 3, and 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 back and forth horizontally in the blanking chute 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. The cutter 123 is installed at the end of the shaft, and the gap between its blade and the outer wall of the box 1 is adjustable to ensure accurate cutting of the strip filter cake. The cut pellets fall freely to the conveyor 13. The surface area of ​​the pellets is in contact with the hot air. After being treated with hot air by the drying equipment 131, the moisture content is further reduced, forming a light aggregate that can be directly used. It can be directly used as a light aggregate for ecological slope protection or roadbed engineering, promoting the closed loop of sludge "dehydration-granulation-utilization".

[0029] The present invention also discloses a method for dehydrating and solidifying sludge used for dredging in inland waterways, which is processed by using a sludge dehydration and solidification device for dredging in inland waterways, and includes the following steps: S1: Dredged sludge enters the box 1 through the feed port 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 sideways. S2: During the sludge discharge, the drive motor 7 is started, and the two rotating rods 5 are driven to rotate synchronously through the synchronous wheel 8 and the synchronous belt. One reel 502 releases the filter cloth 503, and the other reels the filter cloth 503, so that the sludge is evenly spread in the filter press area to avoid local accumulation; S3: The driving motor 7 is paused, and the hydraulic cylinder 6 is started to push the pressing plate 601 downward to pressurize the sludge. 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 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, and the filter cloth 503 continues to drive. 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 drop chute 4 through the guide chute 3; The eccentric rod 702 rotates through the first swing rod 9 to drive the movable plate 901, so that the two rotating tubes 902 on the movable plate 901 pull the filter cloth 503 to swing back and forth in the water, removing impurities in the pores of the filter cloth 503 and maintaining water permeability; The eccentric rod 702 simultaneously drives the second swing rod 11, pushing the extrusion block 111 to move back and forth laterally in the blanking chute 4, squeezing the filter cake through the concave hole 401 to form strips of mud; S5: The rack plate 122 moves with the extrusion block 111, meshing with the driven gear 121 to drive the rotating shaft 12 to rotate, so that the cutter 123 cuts the mud strips into granules; The pellets fall into the conveyor 13 and are quickly dehydrated and solidified by the drying equipment 131 .

[0030] The above-described embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A sludge dehydration and solidification device for inland waterway dredging, comprising a box (1) with a feed port (101) opened on the top, characterized in that: Also includes: A material discharge channel (2), wherein the material discharge channel (2) is fixedly arranged on the inner wall of the box body (1) and is in communication with the material feed port (101); A filter press assembly, the filter press assembly being arranged in the box (1) and used for filtering sludge; A material guide trough (3), the material guide trough (3) being arranged at one end of the filter press assembly and used for guiding the filter cake after filter pressing; A blanking trough (4), the blanking trough (4) is arranged on the lower side of the guide trough (3) and is communicated with the guide trough (3), and a plurality of recessed holes (401) communicating with the blanking trough (4) are provided at the bottom of the box body (1); and a granular material preparation component, the granular material preparation component being arranged at the chute (4) and being used for preparing light aggregate or aggregate; The box (1) is further provided with a driving component for driving the pellet preparation component and the filter press component.

2. The sludge dehydration and solidification equipment for inland waterway dredging according to claim 1, characterized in that: The filter press assembly comprises two rotating rods (5) rotatably connected to the housing (1), a movable gear (501) arranged on the rotating rods (5), a reel (502) arranged on the rotating rods (5), a filter cloth (503) arranged between the two reels (502), two first guide rollers (504) arranged in the housing (1), a guide rod (505) fixed in the housing (1), and a second guide roller (506) movably arranged in the housing (1), wherein the movable gears (501) on the two rotating rods (5) are meshed with each other, and an end of the filter cloth (503) away from one of the reels (502) passes through the first guide roller (504), the second guide roller (506) in sequence, and is connected to the other reel (502).

3. The sludge dehydration and solidification equipment for inland waterway dredging according to claim 2, characterized in that: The filter press assembly further comprises a hydraulic cylinder (6) fixedly mounted in the housing (1) and a pressure plate (601) fixedly mounted on the lower side of the hydraulic cylinder (6); a baffle (6011) for blocking the discharge port of the feed channel (2) is fixedly mounted 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; and a filter screen plate (602) is provided on the inner wall of the housing (1) between the double-layered filter cloth (503).

4. The sludge dehydration and solidification equipment for inland waterway dredging according to claim 3, characterized in that: Each of the first guide rollers (504) comprises a fixed rod (5041) fixedly mounted on the inner walls of both sides of the box body (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, and the guide rod (505), the pressure plate (601) and the filter plate (602) are all arranged to match the V-shape of the first guide roller (504).

5. The sludge dehydration and solidification equipment for inland waterway dredging according to claim 4, characterized in that: The driving assembly comprises a rotating rod (701) rotatably connected to both sides of the box (1), an eccentric rod (702) arranged between the two rotating rods (701), and a driving motor (7) fixed on the box (1) for driving one of the rotating rods (701) to rotate, the rotating rod (701) and one of the rotating rods (5) are both provided with a synchronous wheel (8), and a synchronous belt is provided between the two synchronous wheels (8).

6. The sludge dehydration and solidification equipment for inland waterway dredging according to claim 5, characterized in that: A first swinging rod (9) is rotatably provided on the eccentric rod (702), and one end of the first swinging rod (9) away from the eccentric rod (702) is movably connected to a movable plate (901), and the movable plate (901) is slidably connected to the inner wall of the box body (1). Two rotating tubes (902) are rotatably connected to the movable plate (901), and 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 body (1) via a support plate, and the telescopic end of the elastic telescopic plate (10) is connected to the second guide roller (506).

7. The sludge dehydration and solidification equipment for inland waterway dredging according to claim 6, characterized in that: The pellet preparation assembly comprises a second swinging rod (11) rotatably connected to the eccentric rod (702) and an extrusion block (111) movably connected to one end of the second swinging rod (11) away from the eccentric rod (702), wherein the extrusion block (111) is slidably connected in the blanking chute (4).

8. The sludge dehydration and solidification equipment for inland waterway dredging according to claim 7, characterized in that: The inner wall of the box body (1) is rotatably connected to a rotating shaft (12), a driven gear (121) is provided on the rotating shaft (12), a rack plate (122) meshing with the driven gear (121) is fixed to the extrusion block (111) via a connecting plate, and a cutter (123) is fixed on the rotating shaft (12) to movably abut against the outer wall of the box body (1).

9. The sludge dehydration and solidification equipment for inland waterway dredging according to claim 8, characterized in that: It also includes a conveyor (13) arranged at the lower side of the blanking chute (4), and a drying device (131) is installed on the frame of the conveyor (13).

10. A method for dehydrating and solidifying sludge used for dredging in inland waterways, comprising: applying the sludge dehydration and solidification equipment for dredging in inland waterways according to claim 9, wherein: The following steps are involved: S1: The dredged sludge enters the box (1) through the feed port (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 sideways. S2: During the sludge discharge period, the driving motor (7) is started, and the two rotating rods (5) are driven to rotate synchronously through the synchronous wheel (8) and the synchronous belt, and one reel (502) releases the filter cloth (503) and the other reels the filter cloth (503), so that the sludge is evenly spread in the filter press area to avoid local accumulation; S3: The driving motor (7) is paused, and the hydraulic cylinder (6) is started to push the pressure plate (601) downward to pressurize the sludge. 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 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 be driven, 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 drop chute (4) through the guide chute (3); The eccentric rod (702) rotates through the first swing rod (9) to drive the movable plate (901), so that the two rotating tubes (902) on the movable plate (901) pull the filter cloth (503) to swing back and forth in the water, thereby removing impurities in the pores of the filter cloth (503) and maintaining water permeability; The eccentric rod (702) simultaneously drives the second swing rod (11), pushing the extrusion block (111) to move back and forth laterally in the blanking chute (4), squeezing the filter cake through the concave hole (401) to form a strip of mud; S5: The rack plate (122) moves with the extrusion block (111), meshing with the driven gear (121) to drive the rotating shaft (12) to rotate, so that the cutter (123) cuts the mud strips into granules; The pellets fall into the conveyor (13) and are rapidly dehydrated and solidified by the drying equipment (131).

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