Automatic river channel dredging equipment and dredging method for water conservancy project

Abstract

The invention relates to the technical field of dredging equipment, in particular to automatic river channel dredging equipment for hydraulic engineering, which comprises a fixing seat, a mounting frame and a fixing frame are mounted at the upper end of the fixing seat, a cleaning assembly is arranged in the mounting frame, a lifting frame is slidably connected in the mounting frame through a guide rod, and a plurality of conical opening pipes are mounted in the lifting frame. The rotating rods are rotationally connected into the conical opening pipe, the feeding blades are installed on the circumferential faces of the rotating rods and slidably connected with the conical opening pipe, a plurality of water seepage holes are formed in the circumferential face of the conical opening pipe, a discharging opening is formed in the circumferential face of the conical opening pipe, a rotating motor is installed at the upper end of the lifting frame, and a rotating shaft is installed at the output end of the rotating motor. According to the sludge cleaning device, through the effect of the cleaning assembly, when sludge is cleaned, disturbance to nearby sludge is reduced, and the situation that large-area river water is turbid when the sludge is cleaned in the river water is avoided.

Description

Technical Field

[0001] This invention relates to the field of dredging equipment technology, and more specifically to an automatic river dredging device and dredging method for water conservancy projects. Background Technology

[0002] River dredging is a part of water conservancy projects. When it rains, rainwater carries mud and sand from the ground into the river, where it is deposited on the riverbed and turns into silt. Workers need to dredge the river regularly to prevent blockages.

[0003] The shortcomings of existing technologies: When existing river dredging equipment removes silt from riverbeds, it stirs up the silt during the dredging process, causing some silt particles to remain suspended in the water. These suspended particles may contain pollutants, which not only exacerbate water turbidity in the short term, but may also promote excessive algae growth and release harmful substances. To address this, we propose an automatic river dredging equipment and method for water conservancy projects. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic river dredging device and dredging method for water conservancy projects, so as to solve the problems existing in the background art.

[0005] This invention provides the following technical solution: an automatic river dredging device for water conservancy projects, comprising a fixed base, an installation frame and a fixing frame mounted on the upper end of the fixed base, a cleaning component disposed within the installation frame, and a dewatering component disposed on the fixing frame, the cleaning component comprising a lifting frame, a conical tube, a rotating rod and a feeding blade, the lifting frame being slidably connected to the installation frame via a guide rod, multiple conical tubes being installed within the lifting frame, the rotating rods being rotatably connected within the conical tubes, the feeding blades being mounted on the circumferential surface of the rotating rods and slidably connected to the conical tubes, multiple seepage holes being provided on the circumferential surface of the conical tubes, and a discharge port being installed on the circumferential surface of the conical tubes, a rotating motor being mounted on the upper end of the lifting frame, a rotating shaft being mounted on the output end of the rotating motor, the rotating shaft being connected to the rotating rods via a first sprocket set, and the rotating rods being connected to each other via a second sprocket set.

[0006] Preferably, a lifting motor is mounted on the surface of the lifting frame, a connecting shaft is mounted on the output end of the lifting motor, a threaded rod rotatably connected inside the lifting frame is threadedly connected to the mounting frame, and the threaded rod and the connecting shaft are connected by a third sprocket set.

[0007] Preferably, the dehydration assembly includes an installation cylinder, a rotating column, a dehydration trough, a sliding rod, a support plate, and a pressing plate. The installation cylinder is installed on the upper end of the fixed frame. The rotating column is rotatably connected inside the installation cylinder. Multiple dehydration troughs are formed on the circumferential surface of the rotating column. Multiple sliding rods are slidably connected inside the rotating column. The support plate is installed on the end face of the sliding rod. Telescopic rods are slidably connected inside the sliding rod and the rotating column. The pressing plate is installed on the end face of the telescopic rod. A first spring is installed between the pressing plate and the support plate. Multiple filter holes and discharge grooves are formed on the circumferential surface of the installation cylinder. A conveying mechanism is installed on the upper end of the fixed base.

[0008] Preferably, a drive motor is mounted on the circumferential surface of the mounting cylinder, a drive shaft is mounted on the output end of the drive motor, a gear is mounted on the circumferential surface of the drive shaft, and a gear ring mounted on the circumferential surface of the rotating column meshes with the gear.

[0009] Preferably, the mounting cylinder has multiple feed ports installed on its circumferential surface, and the feed ports and discharge ports are connected by flexible hoses.

[0010] Preferably, a pair of guide frames are installed on the upper end of the fixed base, and a slider is slidably connected in each guide frame. The slider has a slot on its surface, and a block is installed on the circumference of the slider. The block is slidably connected to the slot. A bidirectional electric push rod is installed between the guide frames, and the output end of the bidirectional electric push rod is fixedly connected to the slider.

[0011] Preferably, a support ring is installed on the circumferential surface of the slide bar, and a second spring is installed between the support ring and the rotating column.

[0012] Preferably, a water collection box is installed on the circumferential surface of the mounting cylinder, and a drain pipe is installed at the lower end of the water collection box.

[0013] An automated method for river channel management in water conservancy projects, comprising the following steps: Step 1: Insert the conical tube into the sludge, and control the rotation of the feeding blades to move the sludge upwards into the discharge port; Step 2: The sludge in the discharge port enters the installation cylinder through the hose and the feed port for subsequent dewatering. Step 3: The rotating column drives the dewatering tank to rotate in a cycle, continuously adding sludge to the dewatering tank for dewatering treatment; Step 4: Control the extrusion disc to move inward, squeeze the sludge in the dewatering tank, and squeeze out a large amount of water from the sludge; Step 5: As the sludge, after being squeezed out of water, passes through the discharge trough, it falls downwards and is discharged to the outside, facilitating subsequent storage and transportation of the sludge.

[0014] The technical effects and advantages of this invention are as follows: 1. This invention controls the insertion of a conical tube into a silt layer. The rotation of the feeding blades drives all the silt inside the conical tube upwards, and finally discharges it through the discharge port. Then, it is transferred to the installation cylinder through a flexible hose. Since the cleaned silt is located inside the conical tube and isolated from the outside, not only is the silt content transported upwards in the conical tube higher and the river water less, but it also greatly reduces the disturbance to the nearby silt and avoids the situation of large-scale turbidity of the river water when cleaning silt in the river. Finally, the silt enters the installation cylinder and is squeezed to separate a large amount of water from the silt itself, which facilitates the subsequent storage and transportation of the silt. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rear structure in this invention; Figure 3 This is a schematic diagram of the cleaning component in this invention; Figure 4 This is a schematic diagram of the cross-section of the tapered tube in this invention; Figure 5 This is a schematic diagram of the mounting bracket in this invention; Figure 6 This is a schematic diagram of the lifting frame in this invention; Figure 7 This is a schematic diagram of the dehydration component in this invention; Figure 8 This is a schematic diagram of the mounting cylinder in this invention; Figure 9 This is a cross-sectional structural diagram of the mounting cylinder and rotating column in this invention; Figure 10 This is a schematic diagram of the extrusion disc in the present invention; Figure 11 This is a schematic diagram of the dehydration component in this invention, viewed from the left side in cross-section. Figure 12 This is a schematic diagram of the disassembled mounting cylinder and rotating column in this invention; Figure 13 This is a schematic diagram of the guide frame structure in this invention; Figure 14 This is a schematic diagram of the slider in this invention.

[0016] The attached figures are labeled as follows: 1. Fixed base; 101. Mounting frame; 102. Fixed frame; 2. Cleaning assembly; 201. Lifting frame; 202. Conical tube; 203. Rotating rod; 204. Feeding blade; 205. Drainage hole; 206. Discharge port; 207. Rotating motor; 208. Rotating shaft; 209. First sprocket assembly; 2010. Second sprocket assembly; 2011. Lifting motor; 2012. Connecting shaft; 2013. Threaded rod; 2014. Third sprocket assembly; 3. Dewatering assembly; 301. Mounting cylinder; 302. Rotating column; 30 3. Dewatering tank; 304. Slide rod; 305. Support plate; 306. Telescopic rod; 307. Extrusion plate; 308. First spring; 309. Filter hole; 3010. Discharge trough; 3011. Conveying mechanism; 4. Drive motor; 401. Drive shaft; 402. Gear; 403. Gear ring; 404. Feed inlet; 405. Hose; 5. Guide frame; 501. Slider; 502. Slot; 503. Block; 504. Bidirectional electric push rod; 505. Support ring; 506. Second spring; 6. Water collection box; 601. Drain pipe. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The automatic river dredging equipment and dredging method for water conservancy projects involved in the present invention are not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figure 1-6 As shown, in one embodiment, an automatic river dredging device for water conservancy projects is proposed, including a fixed base 1. A mounting frame 101 and a fixed frame 102 are mounted on the upper end of the fixed base 1. A cleaning component 2 is disposed inside the mounting frame 101, and a dewatering component 3 is disposed on the fixed frame 102. The cleaning component 2 includes a lifting frame 201, a conical pipe 202, a rotating rod 203, and a feeding blade 204. The lifting frame 201 is slidably connected to the mounting frame 101 via a guide rod. Multiple conical pipes 202 are installed inside the lifting frame 201, and the rotating rod 203 is... The feeding blades 204 are rotatably connected inside the conical tube 202 and are all installed on the circumferential surface of the rotating rod 203 and slidably connected to the conical tube 202. Multiple seepage holes 205 are opened on the circumferential surface of the conical tube 202 and a discharge port 206 is installed on the circumferential surface of the conical tube 202. A rotating motor 207 is installed at the upper end of the lifting frame 201. A rotating shaft 208 is installed at the output end of the rotating motor 207. The rotating shaft 208 is connected to the rotating rod 203 through the first sprocket set 209, and the rotating rods 203 are connected to each other through the second sprocket set 2010.

[0019] In practical application, the fixed base 1 is used to fix the device to the hull. The movement of the hull moves the equipment. When cleaning silt, the rotating motor 207 is controlled to operate, driving the rotating shaft 208 to rotate. The rotating shaft 208, through the action of the first sprocket group 209 and the second sprocket group 2010, causes multiple rotating rods 203 to rotate simultaneously. The rotating rods 203 then drive multiple feeding blades 204 to rotate simultaneously. Subsequently, the lifting frame 201 is controlled to move downwards, causing the conical tube 202 to be inserted into the silt layer in the river. During the insertion of the conical tube 202 into the silt layer, the rotating feeding blades 204 can carry... The silt located inside the conical pipe 202 is transported upwards until the conical pipe 202 is inserted to the bottom of the silt layer. Then, through the continuous rotation of the feeding blades 204, all the silt inside the conical pipe 202 is transported upwards and finally discharged through the discharge port 206. At the same time, during the transportation process, some river water can be discharged from the seepage hole 205. The cleaned silt is located inside the conical pipe 202 and isolated from the outside world. Not only is the silt content transported upwards in the conical pipe 202 high and the river water content low, but it also greatly reduces the disturbance to the nearby silt and avoids the situation of large-scale turbidity of the river water when cleaning silt in the river.

[0020] like Figure 3 , 5 As shown in Figure 6, in one embodiment, a lifting motor 2011 is mounted on the surface of the lifting frame 201, a connecting shaft 2012 is mounted on the output end of the lifting motor 2011, and a threaded rod 2013 rotatably connected inside the lifting frame 201 is threadedly connected to the mounting frame 101. The threaded rod 2013 and the connecting shaft 2012 are connected by a third sprocket set 2014.

[0021] In practical application, the lifting motor 2011 is controlled to operate. The lifting motor 2011 drives the threaded rod 2013 to rotate through the action of the third sprocket group 2014. By controlling the forward and reverse rotation of the threaded rod 2013, the lifting frame 201 can be raised and lowered, thereby achieving the effect of controlling the insertion and extraction of the conical tube 202 in the silt. Combined with the movement of the hull, the effect of cleaning silt in multiple places can be achieved.

[0022] like Figure 7-12As shown, in one embodiment, the dehydration assembly 3 includes an installation cylinder 301, a rotating column 302, a dehydration tank 303, a sliding rod 304, a support plate 305, and a pressing plate 307. The installation cylinder 301 is installed on the upper end of the fixed frame 102. The rotating column 302 is rotatably connected inside the installation cylinder 301. Multiple dehydration tanks 303 are opened on the circumferential surface of the rotating column 302. Multiple sliding rods 304 are slidably connected inside the rotating column 302. The support plate 305 is installed on the end face of the sliding rod 304. Telescopic rods 306 are slidably connected inside the sliding rod 304 and the rotating column 302. The pressing plate 307 is installed on the end face of the telescopic rod 306. A first spring 308 is installed between the pressing plate 307 and the support plate 305. Multiple filter holes 309 and discharge grooves 3010 are opened on the circumferential surface of the installation cylinder 301. A conveying mechanism 3011 is installed on the upper end of the fixed base 1.

[0023] In practical application, when the silt cleared from the river is transported into the installation cylinder 301, the rotating column 302 is controlled to rotate. The rotating column 302 drives the dewatering tank 303 to rotate. When one of the dewatering tanks 303 moves to the top, the silt can easily fall into the current dewatering tank 303. As the dewatering tank 303 rotates backward, the sliding rods 304 on both sides are controlled to move inward. The sliding rods 304 drive the squeezing plate 307 to move inward. The squeezing plate 307 will squeeze the silt in the dewatering tank 303, squeezing out the water contained therein. The squeezed water will be discharged to the outside through the filter hole 309, so that most of the water is separated from the silt. Then, when the dewatering tank 303 carries the silt with squeezed water through the discharge tank 3010, the silt will fall downward and be discharged to the outside. Finally, it is transported and stored by the conveying mechanism 3011 below.

[0024] like Figure 8 As shown, in one embodiment, a drive motor 4 is mounted on the circumferential surface of the mounting cylinder 301, a drive shaft 401 is mounted on the output end of the drive motor 4, a gear 402 is mounted on the circumferential surface of the drive shaft 401, and a gear ring 403 mounted on the circumferential surface of the rotating column 302 meshes with the gear 402.

[0025] In practical applications, this invention controls the operation of the drive motor 4, which in turn drives the drive shaft 401 to rotate. The drive shaft 401 then drives the gear 402 to rotate, which in turn drives the gear ring 403 to rotate, thereby achieving the effect of controlling the rotation of the rotating column 302.

[0026] like Figure 2 As shown, in one embodiment, a plurality of feed ports 404 are installed on the circumferential surface of the mounting cylinder 301, and the feed ports 404 are connected to the discharge port 206 by a flexible hose 405.

[0027] In practical application, when the silt in the river is conveyed to the top of the cone pipe 202 by the feeding blade 204, it then enters the discharge port 206, and then enters the feed port 404 through the hose 405. Finally, the silt enters the installation cylinder 301 through the feed port 404, so that it can continuously replenish the silt into the dewatering tank 303, thereby achieving the effect of continuous dewatering of the silt.

[0028] In one embodiment of the present invention, the sludge can be continuously conveyed upward by the continuous rotation of the feeding blade 204. At the same time, when the sludge accumulates above the conical pipe 202, it can be squeezed into the discharge port 206, and finally the sludge enters the mounting cylinder 301 to wait for squeezing treatment.

[0029] like Figure 2 , 13 As shown in Figure 14, in one embodiment, a pair of guide frames 5 are installed on the upper end of the fixed base 1. A slider 501 is slidably connected inside each guide frame 5. A slot 502 is opened on the surface of the slider 501. A block 503 is installed on the circumferential surface of the slide rod 304. The block 503 is slidably connected to the slot 502. A bidirectional electric push rod 504 is installed between the guide frames 5. The output end of the bidirectional electric push rod 504 is fixedly connected to the slider 501.

[0030] In practical application, when the rotating column 302 rotates, it continuously drives the dewatering tank 303 past the feed inlet 404, continuously feeding sludge into the dewatering tank 303. After sludge is added to one of the dewatering tanks 303, the rotation of the rotating column 302 drives the locking block 503, which is installed on the end face of the slide rod 304 corresponding to the current dewatering tank 303, to move into the locking slot 502. When the locking block 503 enters the locking slot 502, the bidirectional electric push rod 504 is controlled to operate, driving the sliders 501 on both sides to move inward, pushing the corresponding slide rod 304 to move inward. Finally, the merging of the two extrusion discs 307 completes the effect of extruding and dewatering the sludge. During the extrusion process, the first spring 308 and the telescopic mechanism... The function of rod 306 is to adapt to the compression of sludge with different contents. As the rotating column 302 rotates, the locking block 503 slides in the locking groove 502. When the locking block 503 is about to disengage from the locking groove 502, the bidirectional electric push rod 504 is controlled to reset, driving the sliding rod 304 and the compression plate 307 to move to both sides to reset, releasing the compression state of the sludge in the current dewatering tank 303. At the same time, during the reset, the bidirectional electric push rod 504 can be reciprocated to extend and retract, pushing the sludge in it to move and preventing the sludge from adhering to the dewatering tank 303. This ensures that when the dewatering tank 303 moves to the bottom, it can stably fall down through the discharge trough 3010 and be discharged from the installation cylinder 301. After a large amount of water is squeezed out, the sludge can be greatly reduced in storage volume, which is convenient for subsequent storage and transportation.

[0031] like Figure 9 and 14 As shown, in one embodiment, a support ring 505 is installed on the circumferential surface of the slide bar 304, and a second spring 506 is installed between the support ring 505 and the rotating column 302.

[0032] In practical application, when the electric push rod drives the slider 501 to move and reset on both sides, the locking block 503 can be pulled to both sides through the locking slot 502, thereby driving the slide rod 304 and the pressing plate 307 to move and reset on both sides. At the same time, through the action of the second spring 506, the position of the slide rod 304 can be corrected so that it is completely reset, ensuring that the locking block 503 can stably enter the locking slot 502 during rotation.

[0033] like Figure 2 and 11 As shown, in one embodiment, a water collection box 6 is installed on the circumferential surface of the mounting cylinder 301, and a drain pipe 601 is installed at the lower end of the water collection box 6.

[0034] In practical application, the sludge is squeezed by the action of the squeezing disc 307, the water is squeezed out, the water is discharged into the water collection box 6 through the filter hole 309, and finally discharged through the drain pipe 601.

[0035] This invention also proposes an automatic method for river channels in water conservancy projects, the specific steps of which include: Step 1: Insert the conical tube 202 into the sludge, and control the feeding blades 204 to rotate, causing the sludge to move upward and enter the discharge port 206; Step 2: The sludge in the discharge port 206 enters the installation cylinder 301 for subsequent dewatering through the action of the hose 405 and the feed port 404. Step 3: The rotating column 302 drives the dewatering tank 303 to rotate in a cycle, continuously adding sludge to the dewatering tank 303 for dewatering treatment; Step 4: Control the squeezing disc 307 to move inward, squeezing the sludge in the dewatering tank 303, so that a large amount of water is squeezed out of the sludge; Step 5: When the sludge with water is squeezed out, it falls downwards and is discharged to the outside as it passes through the discharge trough 3010, which facilitates the subsequent storage and transportation of the sludge.

[0036] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A river automatic dredging equipment for hydraulic engineering, comprising a fixing base (1), characterized in that: The fixed seat (1) upper end is provided with mounting frame (101) and fixed frame (102), the mounting frame (101) is provided with cleaning assembly (2), the fixed frame (102) is provided with dehydration assembly (3), the cleaning assembly (2) includes lifting frame (201), taper pipe (202), rotating rod (203) and feeding blade (204), the lifting frame (201) is slidably connected in mounting frame (101) through guide rod, a plurality of the taper pipe (202) is installed in lifting frame (201), the rotating rod (203) is rotatably connected in the taper pipe (202), the feeding blade (204) is installed on the circumference of rotating rod (203) and is slidably connected with taper pipe (202), a plurality of water seepage holes (205) are formed on the circumference of taper pipe (202), the discharge port (206) is installed on the circumference of taper pipe (202), the lifting frame (201) upper end is provided with rotating motor (207), the output end of rotating motor (207) is provided with rotating shaft (208), the rotating shaft (208) is connected between rotating rod (203) through first sprocket set (209), the rotating rod (203) is connected through second sprocket set (2010).

2. The automatic river dredging equipment for hydraulic engineering according to claim 1, characterized in that: The lifting frame (201) surface is provided with lifting motor (2011), the output end of lifting motor (2011) is provided with connecting shaft (2012), the screw rod (2013) rotatably connected in lifting frame (201) is threadedly connected with mounting frame (101), the screw rod (2013) is connected between connecting shaft (2012) through third sprocket set (2014).

3. The automatic river dredging equipment for hydraulic engineering according to claim 1, characterized in that: The dehydration assembly (3) includes installation cylinder (301), rotating column (302), dehydration groove (303), slide rod (304), support disc (305) and extrusion disc (307), the installation cylinder (301) is installed on the upper end of fixed frame (102), the rotating column (302) is rotatably connected in installation cylinder (301), a plurality of the dehydration groove (303) is formed on the circumference of rotating column (302), a plurality of the slide rod (304) is slidably connected in rotating column (302), the support disc (305) is installed on the end face of slide rod (304), the slide rod (304) and rotating column (302) are slidably connected with telescopic rod (306), the extrusion disc (307) is installed on the end face of telescopic rod (306), the first spring (308) is installed between extrusion disc (307) and support disc (305), a plurality of filter holes (309) and discharge grooves (3010) are formed on the circumference of installation cylinder (301), the fixed seat (1) upper end is provided with conveying mechanism (3011).

4. The automatic river dredging equipment for hydraulic engineering according to claim 3, characterized in that: The driving motor (4) is installed on the circumference surface of the mounting cylinder (301), the output end of the driving motor (4) is installed with a driving shaft (401), the circumference surface of the driving shaft (401) is installed with a gear (402), the gear ring (403) installed on the circumference surface of the rotating column (302) is engaged with the gear (402).

5. The automatic river dredging equipment for hydraulic engineering according to claim 4, characterized in that: A plurality of feeding ports (404) are installed on the circumference surface of the mounting cylinder (301), and the feeding ports (404) are connected with the discharge port (206) through the hose (405).

6. The automatic river dredging equipment for hydraulic engineering according to claim 5, characterized in that: A pair of guide frames (5) are installed on the upper end of the fixed seat (1), the sliding blocks (501) are slidably connected in the guide frames (5), the clamping grooves (502) are formed in the surfaces of the sliding blocks (501), the clamping blocks (503) are installed on the circumference surface of the sliding rod (304), the clamping blocks (503) are slidably connected with the clamping grooves (502), the bidirectional electric push rods (504) are installed between the guide frames (5), and the output ends of the bidirectional electric push rods (504) are fixedly connected with the sliding blocks (501).

7. The automatic river dredging equipment for hydraulic engineering according to claim 6, characterized in that: The supporting rings (505) are installed on the circumference surface of the sliding rod (304), and the second springs (506) are installed between the supporting rings (505) and the rotating column (302).

8. The automatic river dredging equipment for hydraulic engineering according to claim 4, characterized in that: The water collecting box (6) is installed on the circumference surface of the mounting cylinder (301), and the drain pipe (601) is installed on the lower end of the water collecting box (6).

9. A river automatic method for water conservancy projects, applied to the river automatic dredging equipment for water conservancy projects in any one of claims 1-8, characterized in that: The specific steps include: Step one: the tapered pipe (202) is inserted into the sludge, the feeding blade (204) is controlled to rotate to drive the sludge to move upwards into the discharge port (206); Step two: the sludge in the discharge port (206) is introduced into the mounting cylinder (301) through the hose (405) and the feeding port (404) for subsequent dehydration; Step three: the rotating column (302) drives the dehydration tank (303) to rotate circularly, and the sludge is continuously supplemented in the dehydration tank (303) for dehydration treatment; Step four: the extrusion disc (307) is controlled to move inwards to extrude the sludge in the dehydration tank (303), so that a large amount of water in the sludge is extruded out; Step five: the sludge with extruded water falls downwards and is discharged to the outside through the discharge groove (3010), which is convenient for subsequent storage and transportation of the sludge.

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