River sludge dredging device and using method thereof

Abstract

The invention discloses a river sludge dredging device, comprising: a main body unit comprising a hull, the two ends of which are respectively provided with a sludge fishing assembly and a collecting assembly; the operation unit comprises a shell, the shell is fixedly installed on the ship body, a feeding hopper is fixedly connected to the shell, a dewatering assembly is arranged on the shell, a cleaning assembly is arranged on the dewatering assembly, a gas collecting assembly is arranged on the shell, and a transmission assembly is arranged between the gas collecting assembly and the dewatering assembly. A cutting assembly used for discharging is arranged at one end of the shell. A piston plate moves left and right, high pressure is formed on the right side of a sealing plate, after the pressure reaches a certain limit value, the pressure is released through a pressure release valve, a hollow brush rod is driven to rotate, a conical filter screen is cleaned, meanwhile, airflow passes through an air outlet hole, the conical filter screen is scoured, the conical filter screen is further cleaned, and dual cleaning is achieved; the conical filter screen is prevented from being blocked, and the dehydration efficiency of the device is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of river dredging, and in particular to a river sludge dredging device and a use method thereof. Background Art

[0002] The river sludge dredging device is mainly used to clean up the sediments at the bottom and around the river, including sludge, silt and other underwater debris. Such equipment is often used to improve water quality, increase water flow, protect water ecology, etc.

[0003] River sludge dredging is an important water environment management work, mainly used to clean up the sediment sludge in rivers, lakes or other water bodies. Dredging operations can improve water quality, restore the ecological balance of water bodies, increase water flow, and prevent water level rise and floods.

[0004] Most of the existing river dredging methods use dredging ships to salvage the silt at the bottom of the river and then dehydrate and collect it. Although this method effectively dredges the river, it still has certain disadvantages. When dehydrating the silt, most of them need to use a filter. Long-term use of the filter can easily cause the filter to become clogged, reducing the dehydration efficiency of the device. In addition, the dehydrated silt is mostly in block form and large in size, which is inconvenient to collect. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A river sludge dredging device, comprising:

[0008] The main unit comprises a hull, and two ends of the hull are respectively provided with a mud scooping assembly and a collecting assembly;

[0009] The operating unit includes a shell, which is fixedly installed on the hull, a feed hopper is fixedly connected to the shell, a dehydration component is provided on the shell, a cleaning component is provided on the dehydration component, an air collecting component is provided on the shell, a transmission component is provided between the air collecting component and the dehydration component, and a cutting component for discharging is provided at one end of the shell.

[0010] As a preferred embodiment of the river sludge dredging device of the present invention, wherein: the sludge scooping assembly includes an electric steering rod fixedly installed on the hull. A slideway is fixedly connected to the electric steering rod. An electric slide rail device is slidably arranged on the slideway. A roller is provided at the bottom of the electric slide rail device. An electric wire winding drum is fixedly installed on the hull. A cable is wound around the electric wire winding drum. An electric grab device is fixedly arranged on the cable.

[0011] As a preferred embodiment of the river sludge dredging device of the present invention, wherein: the collection assembly includes a first electric roller and a second electric roller respectively installed on the hull. A conveyor belt is arranged between the first electric roller and the second electric roller. A baffle is fixedly connected to the conveyor belt. A collection box is arranged below the conveyor belt.

[0012] As a preferred embodiment of the river sludge dredging device of the present invention, wherein: the dehydration assembly includes a conical filter screen fixedly connected to the inner wall of the housing. A rotating shaft is rotatably inserted through the housing. A spiral blade is fixedly connected to the rotating shaft. The spiral blade is located inside the conical filter screen. A water outlet is opened at the bottom of the housing. A motor is fixedly arranged at the left end of the housing. The rotating shaft is fixedly connected to the output end of the motor.

[0013] As a preferred embodiment of the river sludge dredging device of the present invention, wherein: the cleaning assembly includes a hollow annular plate fixedly connected to the conical filter screen. A hollow gear is rotatably connected to the hollow annular plate. Hollow brush rods are symmetrically and fixedly connected to the hollow gear. The hollow brush rods are in contact with the conical filter screen. An air delivery pipe is fixedly connected to the hollow annular plate. The air delivery pipe, the hollow annular plate, the hollow gear and the hollow brush rods are communicated with each other. A plurality of air outlet holes are opened on the side wall of the hollow brush rod close to the conical filter screen. A round rod is rotatably inserted through the right side wall of the housing. A first gear is fixedly connected to the round rod. The first gear is meshed with the hollow gear. A round sleeve is fixedly connected to the air delivery pipe. An impeller is fixedly connected to the round rod. A pressure relief valve is arranged on the air delivery pipe.

[0014] As a preferred embodiment of the river sludge dredging device of the present invention, the gas collection assembly includes a cylinder disposed above the housing. A connecting rod is fixedly connected between the cylinder and the housing. A movable rod is slidably inserted through the cylinder. A ring sleeve is slidably connected to the inner wall of the cylinder. An annular spiral groove is formed on the movable rod. A clamping rod is fixedly connected to the ring sleeve and extends into the annular spiral groove. Fixed rods are symmetrically and fixedly connected to the ring sleeve. A piston plate is fixedly connected to the fixed rods and is slidably connected to the inner wall of the cylinder. A plurality of through openings are formed on the cylinder. A sealing plate is fixedly connected inside the cylinder. A one-way valve is provided on the sealing plate. A water inlet pipe is fixedly connected to the cylinder. A sealing cap is threadedly connected to the water inlet pipe.

[0015] As a preferred embodiment of the river sludge dredging device of the present invention, the transmission assembly includes a second gear fixedly connected to a rotating shaft. A rotating rod is rotatably connected to the left side wall of the housing. A third gear is fixedly connected to the rotating rod. The second gear meshes with the third gear. A driving transmission wheel is fixedly connected to the rotating rod. A driven transmission wheel is fixedly connected to the movable rod. A transmission belt is provided between the driving transmission wheel and the driven transmission wheel.

[0016] As a preferred embodiment of the river sludge dredging device of the present invention, the cutting assembly includes a discharge pipe fixedly connected to the right side wall of the housing. An annular gear is rotatably connected to the discharge pipe. A plurality of cutting blades are fixedly connected to the inner side of the annular gear. A fourth gear is fixedly connected to the round rod. The fourth gear meshes with the annular gear.

[0017] As a preferred embodiment of the river sludge dredging device of the present invention, sliding rods are symmetrically and fixedly connected to the hull. A counterweight block is slidably disposed on the sliding rods.

[0018] The usage method of the river sludge dredging device as described above includes the following steps:

[0019] S1. The hull travels to the target area. Subsequently, the position of the electric grab device is adjusted through the electric slide rail device. Then, the electric grab device is lowered to the river bottom through the electric wire winding drum. Subsequently, the electric grab device is started to grab the sludge at the bottom of the river. Then, it is lifted, and the electric steering rod is rotated to put the sludge into the feed hopper.

[0020] S2. After the sludge enters the housing through the feed hopper, the motor is started to drive the rotating shaft to rotate, causing the spiral blades to rotate, continuously transporting the sludge to the right, and compressing and dewatering the sludge through the setting of the conical filter screen to discharge the water.

[0021] S3. The rotating shaft rotates, driving the second gear to rotate, causing the third gear to rotate, driving the rotating rod to rotate, making the driving transmission wheel rotate, driving the movable rod to rotate. Through the cooperation of the clamping rod and the annular spiral groove, the collar is driven to move left and right, causing the piston plate to move left and right, compressing the gas, enabling the gas to enter the right side of the sealing plate through the one-way valve, and forming a high pressure on the right side of the sealing plate.

[0022] S4. After the pressure reaches a certain limit value, it is released through the pressure relief valve, driving the impeller to rotate, making the round rod rotate, driving the first gear to rotate, causing the hollow gear to rotate, driving the hollow brush rod to rotate, cleaning the conical filter screen. At the same time, the air flow passes through the air outlet holes, flushing the conical filter screen, further cleaning the conical filter screen.

[0023] S5. The round rod rotates, driving the fourth gear to rotate, causing the annular gear to rotate, and cutting the dehydrated sludge through the cutting blade. The processed sludge is transported into the conveyor belt for collection.

[0024] Advantages of the present invention:

[0025] 1. After the sludge enters the housing through the feed hopper, the motor starts to drive the rotating shaft to rotate, causing the spiral blade to rotate, continuously transporting the sludge to the right, and compressing and dehydrating the sludge through the setting of the conical filter screen, discharging the water. The operation is simple and convenient, improving the working efficiency.

[0026] 2. The rotating shaft rotates, driving the collar to move left and right, causing the piston plate to move left and right, compressing the gas, enabling the gas to enter the right side of the sealing plate through the one-way valve, and forming a high pressure on the right side of the sealing plate. After the pressure reaches a certain limit value, it is released through the pressure relief valve, driving the impeller to rotate, making the round rod rotate, driving the first gear to rotate, causing the hollow gear to rotate, driving the hollow brush rod to rotate, cleaning the conical filter screen. At the same time, the air flow passes through the air outlet holes, flushing the conical filter screen, further cleaning the conical filter screen. The dual cleaning avoids the blockage of the conical filter screen and ensures the dehydration efficiency of the device.

[0027] 3. The round rod rotates, driving the fourth gear to rotate, causing the annular gear to rotate, and cutting the dehydrated sludge through the cutting blade. The processed sludge is transported into the conveyor belt for collection, avoiding the formation of large lumps of dehydrated sludge for easy collection. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0029] Figure 1 Schematic diagram of the overall front structure of a river sludge dredging device proposed by the present invention;

[0030] Figure 2 is Figure 1 Partial structure schematic diagram;

[0031] Figure 3 is Figure 1 Partial structure schematic diagram;

[0032] Figure 4 is Figure 1 Partial structure schematic diagram;

[0033] Figure 5 is Figure 4 Right view;

[0034] Figure 6 is Figure 4 Partial sectional structure schematic diagram;

[0035] Figure 7 is Figure 6 Partial structure schematic diagram;

[0036] Figure 8 is Figure 6 Partial sectional structure schematic diagram;

[0037] Figure 9 is Figure 6 Partial structure schematic diagram;

[0038] Figure 10 is Figure 4 Partial structure schematic diagram;

[0039] Figure 11 is Figure 5 Partial structure schematic diagram.

[0040] In the figure: 100, main body unit; 101, hull; 102, dredging assembly; 102a, electric steering rod; 102b, slideway; 102c, electric slide rail device; 102d, roller; 102e, electric wire winding drum; 102f, electric grab device; 103, collection assembly; 103a, first electric roller; 103b, conveyor belt; 103c, baffle; 103d, collection box; 104, slide bar; 105, counterweight; 200, operation unit; 201, housing; 202, feed hopper; 203, dehydration assembly; 203a, conical filter screen; 203b, rotating shaft; 203c, spiral blade; 203d, water outlet; 203e, motor; 204, cleaning assembly; 204a, hollow annular plate; 204b, hollow gear; 204c, hollow brush rod; 204d, round rod; 204e, first gear; 204f, air delivery pipe; 204g, round sleeve; 204h, pressure relief valve; 204i, impeller; 205, gas collection assembly; 205a, cylinder; 205b, connecting rod; 205c, movable rod; 205d, ring sleeve; 205e, annular spiral groove; 205f, clamping rod; 205g, fixed rod; 205h, piston plate; 205i, through port; 205j, sealing plate; 205k, one-way valve; 205l, water inlet pipe; 205m, sealing cover; 206, transmission assembly; 206a, second gear; 206b, rotating rod; 206c, third gear; 206d, driving transmission wheel; 206e, driven transmission wheel; 206f, transmission belt; 207, cutting assembly; 207a, discharge pipe; 207b, annular gear; 207c, cutting blade; 207d, fourth gear. Detailed implementation manners

[0041] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0042] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0043] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it an independent or selective embodiment that is mutually exclusive with other embodiments.

[0044] Next, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0045] Referring Figures 1-11 , the present invention provides a river sludge dredging device, comprising:

[0046] A main body unit 100, including a hull 101, with a sludge dredging component 102 and a collection component 103 provided at both ends of the hull 101 respectively;

[0047] An operation unit 200, including a housing 201, the housing 201 is fixedly installed on the hull 101, a feed hopper 202 is fixedly connected to the housing 201, a dehydration component 203 is provided on the housing 201, a cleaning component 204 is provided on the dehydration component 203, a gas collection component 205 is provided on the housing 201, a transmission component 206 is provided between the gas collection component 205 and the dehydration component 203, and a cutting component 207 for discharging materials is provided at one end of the housing 201.

[0048] Among them, the sludge dredging component 102 includes an electric steering rod 102a, the electric steering rod 102a is fixedly installed on the hull 101, a slideway 102b is fixedly connected to the electric steering rod 102a, an electric slide rail device 102c is slidably arranged on the slideway 102b, rollers 102d are provided at the bottom of the electric slide rail device 102c, an electric wire winding drum 102e is fixedly installed on the hull 101, a cable is wound around the electric wire winding drum 102e, and an electric grab device 102f is fixedly arranged on the cable. The position of the electric grab device 102f is adjusted through the electric slide rail device 102c, and then the electric grab device 102f is lowered to the bottom of the river through the electric wire winding drum 102e. Then, the electric grab device 102f is started to grab the sludge at the bottom of the river, and then lifted. The electric steering rod 102a is rotated to put the sludge into the feed hopper 202.

[0049] Furthermore, the collection component 103 includes a first electric roller 103a and a second electric roller. The first electric roller 103a and the second electric roller are respectively installed on the hull 101. A conveyor belt 103b is provided between the first electric roller 103a and the second electric roller. A baffle 103c is fixedly connected to the conveyor belt 103b. A collection box 103d is provided below the conveyor belt 103b. The processed sludge is transported into the conveyor belt 103b through the conveyor belt 103b for collection.

[0050] Further, the dehydration component 203 includes a conical filter screen 203a, which is fixedly connected to the inner wall of the housing 201. A rotating shaft 203b is inserted through the housing 201 in a rotating manner, and a spiral blade 203c is fixedly connected to the rotating shaft 203b. The spiral blade 203c is located inside the conical filter screen 203a. A water outlet 203d is opened at the bottom of the housing 201. A motor 203e is fixedly arranged at the left end of the housing 201, and the rotating shaft 203b is fixedly connected to the output end of the motor 203e. After the sludge enters the housing 201 through the feed hopper 202, the motor 203e is started to drive the rotating shaft 203b to rotate, so that the spiral blade 203c rotates, causing the sludge to be continuously transported to the right, and the sludge is compressed and dehydrated through the arrangement of the conical filter screen 203a, and the water is discharged.

[0051] Further, the cleaning component 204 includes a hollow annular plate 204a, which is fixedly connected to the conical filter screen 203a. A hollow gear 204b is rotatably connected to the hollow annular plate 204a. Hollow brush rods 204c are symmetrically and fixedly connected to the hollow gear 204b. The hollow brush rods 204c are in contact with the conical filter screen 203a. An air delivery pipe 204f is fixedly connected to the hollow annular plate 204a. The air delivery pipe 204f, the hollow annular plate 204a, the hollow gear 204b and the hollow brush rods 204c are communicated with each other. A plurality of air outlet holes are opened on the side wall of the hollow brush rod 204c close to the conical filter screen 203a. A round rod 204d is inserted through the right side wall of the housing 201 in a rotating manner, and a first gear 204e is fixedly connected to the round rod 204d. The first gear 204e meshes with the hollow gear 204b. A round sleeve 204g is fixedly connected to the air delivery pipe 204f, and an impeller 204i is fixedly connected to the round rod 204d. A pressure relief valve 204h is arranged on the air delivery pipe 204f. When the air flow passes through the air delivery pipe 204f, the impeller 204i can be driven to rotate, so that the round rod 204d rotates, driving the first gear 204e to rotate, so that the hollow gear 204b rotates, driving the hollow brush rods 204c to rotate to clean the conical filter screen 203a. At the same time, the air flow passes through the air outlet holes to wash the conical filter screen 203a, further cleaning the conical filter screen 203a.

[0052] Further, the gas collecting assembly 205 includes a cylinder 205a disposed above the housing 201. A connecting rod 205b is fixedly connected between the cylinder 205a and the housing 201. A movable rod 205c is slidably inserted through the cylinder 205a. A ring sleeve 205d is slidably connected to the inner wall of the cylinder 205a. An annular spiral groove 205e is formed on the movable rod 205c. A clamping rod 205f is fixedly connected to the ring sleeve 205d. The clamping rod 205f extends into the annular spiral groove 205e. Fixing rods 205g are symmetrically and fixedly connected to the ring sleeve 205d. A piston plate 205h is fixedly connected to the fixing rods 205g. The piston plate 205h is slidably connected to the inner wall of the cylinder 205a. A plurality of through openings 205i are formed in the cylinder 205a. A sealing plate 205j is fixedly connected in the cylinder 205a. A one-way valve 205k is provided on the sealing plate 205j. A water inlet pipe 205l is fixedly connected to the cylinder 205a. A sealing cover 205m is threadedly connected to the water inlet pipe 205l. When the movable rod 205c rotates, through the cooperation of the clamping rod 205f and the annular spiral groove 205e, the ring sleeve 205d is driven to move left and right, so that the piston plate 205h moves left and right to compress the gas, and the gas enters the right side of the sealing plate 205j through the one-way valve 205k.

[0053] Further, the transmission assembly 206 includes a second gear 206a fixedly connected to the rotating shaft 203b. A rotating rod 206b is rotatably connected to the left side wall of the housing 201. A third gear 206c is fixedly connected to the rotating rod 206b. The second gear 206a meshes with the third gear 206c. A driving transmission wheel 206d is fixedly connected to the rotating rod 206b. A driven transmission wheel 206e is fixedly connected to the movable rod 205c. A transmission belt 206f is provided between the driving transmission wheel 206d and the driven transmission wheel 206e. When the rotating shaft 203b rotates, the second gear 206a can be driven to rotate, so that the third gear 206c rotates, driving the rotating rod 206b to rotate, so that the driving transmission wheel 206d rotates, driving the movable rod 205c to rotate.

[0054] Further, the cutting assembly 207 includes a discharge pipe 207a fixedly connected to the right side wall of the housing 201. A ring gear 207b is rotatably connected to the discharge pipe 207a. A plurality of cutting blades 207c are fixedly connected to the inner side of the ring gear 207b. A fourth gear 207d is fixedly connected to the round rod 204d. The fourth gear 207d meshes with the ring gear 207b. When the round rod 204d rotates, the fourth gear 207d is driven to rotate, so that the ring gear 207b rotates, and the dehydrated sludge is cut by the cutting blades 207c, which is convenient for transportation and storage.

[0055] Furthermore, sliding rods 104 are symmetrically and fixedly connected to the hull 101. A counterweight block 105 is slidably arranged on the sliding rods 104. The user can control the center of gravity of the hull 101 by adjusting the position of the counterweight block 105 to ensure the stability of the hull 101.

[0056] During use, the hull 101 travels to the target area. Subsequently, the position of the electric grab device 102f is adjusted by the electric slide rail device 102c. Then, the electric grab device 102f is lowered to the bottom of the river through the electric wire winding drum 102e. Subsequently, the electric grab device 102f is activated to grab the sludge at the bottom of the river channel, and then lifted. The electric steering rod 102a is rotated to put the sludge into the feed hopper 202.

[0057] After the sludge enters the housing 201 through the feed hopper 202, the motor 203e is started to drive the rotation of the rotating shaft 203b, causing the spiral blade 203c to rotate, continuously transporting the sludge to the right, and compressing and dewatering the sludge through the setting of the conical filter screen 203a to discharge the water.

[0058] The rotation of the rotating shaft 203b drives the rotation of the second gear 206a, causing the third gear 206c to rotate, driving the rotation of the rotating rod 206b, causing the driving pulley 206d to rotate, driving the rotation of the movable rod 205c. Through the cooperation of the clamping rod 205f and the annular spiral groove 205e, the ring sleeve 205d is driven to move left and right, causing the piston plate 205h to move left and right to compress the gas, enabling the gas to enter the right side of the sealing plate 205j through the one-way valve 205k, forming a high pressure on the right side of the sealing plate 205j.

[0059] After the pressure reaches a certain limit value, it is released through the pressure relief valve 204h, driving the rotation of the impeller 204i, causing the round rod 204d to rotate, driving the rotation of the first gear 204e, causing the hollow gear 204b to rotate, driving the rotation of the hollow brush rod 204c to clean the conical filter screen 203a. At the same time, the air flow passes through the air outlet holes to wash the conical filter screen 203a, further cleaning the conical filter screen 203a.

[0060] The rotation of the round rod 204d drives the rotation of the fourth gear 207d, causing the annular gear 207b to rotate. The dehydrated sludge is cut by the cutting blade 207c, and the processed sludge is transported into the conveyor belt 103b for collection.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limitations. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A river sludge dredging device, characterized in that: Comprising: A main body unit (100), including a hull (101), with a dredging assembly (102) and a collection assembly (103) respectively provided at both ends of the hull (101); An operation unit (200), including a housing (201), the housing (201) being fixedly installed on the hull (101), a feed hopper (202) fixedly connected to the housing (201), a dehydration assembly (203) provided on the housing (201), a cleaning assembly (204) provided on the dehydration assembly (203), a gas collection assembly (205) provided on the housing (201), a transmission assembly (206) provided between the gas collection assembly (205) and the dehydration assembly (203), and a cutting assembly (207) for discharging provided at one end of the housing (201).

2. The dredging device for river sludge according to claim 1, characterized in that: The dredging assembly (102) includes an electric steering rod (102a), the electric steering rod (102a) being fixedly installed on the hull (101), a slideway (102b) fixedly connected to the electric steering rod (102a), an electric slide rail device (102c) slidably arranged on the slideway (102b), rollers (102d) provided at the bottom of the electric slide rail device (102c), an electric wire winding drum (102e) fixedly installed on the hull (101), a cable wound around the electric wire winding drum (102e), and an electric grab device (102f) fixedly arranged on the cable.

3. The dredging device for river sludge according to claim 2, wherein: The collection assembly (103) includes a first electric roller (103a) and a second electric roller, the first electric roller (103a) and the second electric roller being respectively installed on the hull (101), a conveyor belt (103b) provided between the first electric roller (103a) and the second electric roller, baffles (103c) fixedly connected to the conveyor belt (103b), and a collection box (103d) provided below the conveyor belt (103b).

4. The dredging device for river sludge according to claim 3, wherein: The dehydration assembly (203) includes a conical filter screen (203a), the conical filter screen (203a) being fixedly connected to the inner wall of the housing (201), a rotating shaft (203b) rotatably inserted through the housing (201), a spiral blade (203c) fixedly connected to the rotating shaft (203b), the spiral blade (203c) being located inside the conical filter screen (203a), a water outlet (203d) opened at the bottom of the housing (201), and a motor (203e) fixedly arranged at the left end of the housing (201), the rotating shaft (203b) being fixedly connected to the output end of the motor (203e).

5. The dredging device for river sludge according to claim 4, characterized in that: The cleaning component (204) includes a hollow annular plate (204a), the hollow annular plate (204a) is fixedly connected to the conical filter screen (203a), a hollow gear (204b) is rotatably connected to the hollow annular plate (204a), hollow brush rods (204c) are symmetrically and fixedly connected to the hollow gear (204b), the hollow brush rods (204c) are in contact with the conical filter screen (203a), an air delivery pipe (204f) is fixedly connected to the hollow annular plate (204a), the air delivery pipe (204f), the hollow annular plate (204a), the hollow gear (204b) and the hollow brush rods (204c) are in communication, a plurality of air outlet holes are formed in a side wall of the hollow brush rod (204c) close to the conical filter screen (203a), a round rod (204d) is rotatably inserted through a right side wall of the housing (201), a first gear (204e) is fixedly connected to the round rod (204d), the first gear (204e) is meshed with the hollow gear (204b), a round sleeve (204g) is fixedly connected to the air delivery pipe (204f), an impeller (204i) is fixedly connected to the round rod (204d), and a pressure relief valve (204h) is arranged on the air delivery pipe (204f).

6. The dredging device for river sludge according to claim 5, characterized in that: The gas collection component (205) includes a cylinder (205a), the cylinder (205a) is arranged above the housing (201), a connecting rod (205b) is fixedly connected between the cylinder (205a) and the housing (201), a movable rod (205c) is slidably inserted through the cylinder (205a), a ring sleeve (205d) is slidably connected to an inner wall of the cylinder (205a), a ring-shaped spiral groove (205e) is formed in the movable rod (205c), a clamping rod (205f) is fixedly connected to the ring sleeve (205d), the clamping rod (205f) extends into the ring-shaped spiral groove (205e), fixing rods (205g) are symmetrically and fixedly connected to the ring sleeve (205d), a piston plate (205h) is fixedly connected to the fixing rods (205g), the piston plate (205h) is slidably connected to the inner wall of the cylinder (205a), a plurality of through openings (205i) are formed in the cylinder (205a), a sealing plate (205j) is fixedly connected in the cylinder (205a), a one-way valve (205k) is arranged on the sealing plate (205j), a water inlet pipe (205l) is fixedly connected to the cylinder (205a), and a sealing cover (205m) is threadedly connected to the water inlet pipe (205l).

7. An in-river sludge dredging device according to claim 6, characterized in that: The transmission assembly (206) includes a second gear (206a) fixedly connected to the rotating shaft (203b). A rotating rod (206b) is rotatably connected to the left side wall of the housing (201). A third gear (206c) is fixedly connected to the rotating rod (206b). The second gear (206a) meshes with the third gear (206c). A driving transmission wheel (206d) is fixedly connected to the rotating rod (206b). A driven transmission wheel (206e) is fixedly connected to the movable rod (205c). A transmission belt (206f) is provided between the driving transmission wheel (206d) and the driven transmission wheel (206e).

8. The dredging device for river sludge according to claim 7, wherein: The cutting assembly (207) includes a discharge pipe (207a) fixedly connected to the right side wall of the housing (201). An annular gear (207b) is rotatably connected to the discharge pipe (207a). A plurality of cutting blades (207c) are fixedly connected to the inside of the annular gear (207b). A fourth gear (207d) is fixedly connected to the round rod (204d). The fourth gear (207d) meshes with the annular gear (207b).

9. The dredging device for river sludge according to claim 8, characterized in that: Sliding rods (104) are symmetrically and fixedly connected to the hull (101). A counterweight (105) is slidably arranged on the sliding rods (104).

10. The usage method of a river channel sludge dredging device according to any one of claims 1-9, characterized in that: It includes the following steps: S1. The hull (101) travels to the target area. Subsequently, the position of the electric grab device (102f) is adjusted by the electric slide rail device (102c). Subsequently, the electric grab device (102f) is lowered to the bottom of the river by the electric winding drum (102e). Subsequently, the electric grab device (102f) is started to grab the sludge at the bottom of the river channel. Subsequently, it is lifted, and the electric steering rod (102a) is rotated to put the sludge into the feed hopper (202). S2. After the sludge enters the housing (201) through the feed hopper (202), the motor (203e) is started to drive the rotating shaft (203b) to rotate, so that the spiral blade (203c) rotates, continuously transporting the sludge to the right, and compressing and dehydrating the sludge through the conical filter screen (203a) to discharge the water. S3. The rotating shaft (203b) rotates, driving the second gear (206a) to rotate, so that the third gear (206c) rotates, driving the rotating rod (206b) to rotate, so that the driving transmission wheel (206d) rotates, driving the movable rod (205c) to rotate. Through the cooperation of the clamping rod (205f) and the annular spiral groove (205e), the collar (205d) is driven to move left and right, so that the piston plate (205h) moves left and right to compress the gas, so that the gas enters the right side of the sealing plate (205j) through the one-way valve (205k), forming a high pressure on the right side of the sealing plate (205j). S4. After the pressure reaches a certain limit value, it is released through the pressure relief valve (204h), driving the impeller (204i) to rotate, causing the round rod (204d) to rotate, driving the first gear (204e) to rotate, causing the hollow gear (204b) to rotate, driving the hollow brush rod (204c) to rotate, cleaning the conical filter screen (203a). At the same time, the air flow passes through the air outlet holes to scour the conical filter screen (203a), further cleaning the conical filter screen (203a). S5. The round rod (204d) rotates, driving the fourth gear (207d) to rotate, causing the annular gear (207b) to rotate, and cutting the dehydrated sludge through the cutting blade (207c). The processed sludge is transported into the conveyor belt (103b) for collection.

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