Municipal river channel ship towing dredging device

Abstract

The invention relates to the technical field of shipborne desilting devices, in particular to a municipal river ship towing desilting device which comprises a tugboat, a power device, an adjusting device and a desilting pipe, the tugboat is connected with the power device, the power device is communicated with the desilting pipe and used for controlling the unwinding length of the desilting pipe, and the desilting pipe is communicated with a pipeline of the adjusting device. The adjusting device is arranged in the river channel and used for adjusting the dredging area. The tugboat serves as a main bearing body, is used for driving other devices to move and is connected with the adjusting device through the dredging pipe, the adjusting device is arranged in a river channel and is used for removing sludge in the river channel, automatically adjusting the dredging area according to the thickness of the sludge and guaranteeing the dredging quality, and the adjusting device controls the unwinding length of the dredging pipe according to the recognized thickness of a sludge layer and automatically adjusts the dredging area according to the thickness of the sludge layer. Therefore, the local dredging time is automatically adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of ship-borne silt-removing devices, and in particular to a municipal river channel ship-towed silt-removing device. Background Art

[0002] In recent years, with the continuous strengthening of environmental awareness, the construction of the ecological environment has also been gradually developing. Relevant construction of rivers is an important part of ecological environment construction.

[0003] Among them, one of the main difficulties in river channel construction is the dredging of the river channel. As the public patent: CN112982531A-A dredging equipment for municipal river channel management, the specification clearly states that "the existing dredging methods for river channel management mostly use negative pressure suction, but this method has the following problems in actual use: the suction head for sucking sludge cannot change adaptively with the depth of the sludge" and "the dredging component follows the detection component to remove sludge at different depths, so that the dredging efficiency is improved." This public patent adopts the method of first detecting the sludge depth and then changing the dredging depth, and the effect is relatively simple.

[0004] In addition, due to the uneven flow of water in the river channel, it is easy to cause differences in silt deposition. Most of the existing dredging devices can only perform timed and quantitative removal, and the dredging quality is not high. Summary of the invention

[0005] The object of the present invention is to provide a municipal river channel ship-towed dredging device to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a municipal river ship-towed dredging device.

[0007] A municipal river channel ship-towed dredging device comprises a tugboat, a power device, a regulating device and a dredging pipe. The tugboat is connected to the power device, the power device is connected to the dredging pipe, the power device is used to control the unwinding length of the dredging pipe, the dredging pipe is connected to the regulating device pipeline, the regulating device is placed in the river channel, and the regulating device is used to adjust the dredging area.

[0008] The tugboat is the main carrier, used to drive other devices to move. It is connected to the regulating device through the dredging pipe. The regulating device is placed in the river channel and is used to remove silt in the river channel. The dredging area is automatically adjusted according to the thickness of the silt to ensure the dredging quality. The regulating device controls the unwinding length of the dredging pipe according to the identified silt layer thickness, thereby automatically adjusting the local dredging time.

[0009] Furthermore, the power device includes a dredging pump, which is placed on a tugboat, and a dredging tank is provided on the tugboat, the dredging pump output end is connected to the dredging tank pipeline, and the dredging pump input end is connected to the dredging pipe; The adjusting device comprises a rake seat, a silt removal pipe is connected to the rake seat, the rake seat is placed in the river channel, the rake seat comprises a base and a movable seat, a silt removal cavity is arranged on the base, the silt removal cavity faces the silt at the bottom of the river channel, the silt removal pipe is connected to the silt removal cavity pipeline, a plurality of rake teeth are arranged on the base facing the direction of travel of the tugboat, the rake teeth are inserted into the silt in the river channel, adjusting grooves are arranged on both sides of the silt removal cavity, the movable seat is slidably connected to the adjusting grooves, contraction cylinders are arranged on both sides of the base, and the output end of the contraction cylinder is tightly connected to the movable seat.

[0010] As the main power part, the dredging pump is placed on the tugboat, connected to the dredging pipe and the regulating device, and the absorbed silt is pumped into the dredging bin for easy transportation to the shore for treatment. By setting a rake seat and inserting the rake teeth into the silt layer, the tugboat will move forward, which will drive the rake teeth to lift up the silt. The lifted silt is located in the dredging chamber and moves up along the rake teeth. When it moves to the end, the dredging pump is connected to the dredging chamber through the dredging pipe. At this time, the silt continues to accumulate and move up with the movement of the tugboat, reducing the proportion of water on the upper side and improving the quality of silt pumping. During the movement of the tugboat, if there is too much local silt and the silt pumping cannot be completed in unit time, the relative position of the two movable seats is adjusted by the contraction cylinder, thereby adjusting the range of dredging, and the movable seat is slidably guided by the adjustment groove.

[0011] Furthermore, the adjusting device also includes a plurality of carrier plates, a transmission groove is provided at the lower end of the dredging chamber, the lower ends of the plurality of carrier plates are rotatably connected to the transmission groove, the side walls of adjacent carrier plates are in contact, a plurality of detection chambers are provided at the lower end of the transmission groove, a detection assembly is provided in the detection chamber, the detection assembly and the carrier plates are movably connected, the detection assembly includes a pressure rod, a lifting spring is provided at the lower end of the pressure rod, the pressure rod is connected to the detection chamber through the lifting spring, the top end of the pressure rod abuts against the carrier plate, the pressure rod is made of a magnetic material, a pressure measuring coil is provided in the detection chamber, and the pressure measuring coil is located at the outer ring of the pressure rod.

[0012] By setting the carrier plate, the rake teeth will lift the silt into the dredging chamber and then fall onto the carrier plate below. The carrier plate and the adjustment slot will keep rotating, with the center of rotation close to the rake teeth. During the fixed axis rotation of the carrier plate, the pressure rod below will be pressed down, and the pressure rod will slide along the detection chamber and compress the lifting spring. The compression of the lifting spring is positively correlated with the weight of the silt entering. That is, the thicker the local silt layer is, the more silt enters instantly, the greater the compression of the lifting spring, and the more current is generated by the pressure measuring coil cutting the magnetic flux lines of the pressure rod, so as to monitor the local silt in the river in real time. The adjacent sides of the carrier plates are kept in contact, which is used for local sealing and improving the accuracy of silt monitoring.

[0013] Furthermore, the pressure measuring coil and the pressure rod constitute a sub-detection circuit, a plurality of sub-detection circuits are connected in parallel to form a general detection circuit, and the contraction cylinder is electrically connected to the general detection circuit; When the current of the general inspection circuit exceeds the limit: the retraction cylinder drives the two movable seats to move toward the center.

[0014] The pressure measuring coils and pressure rods in the same group form a sub-detection circuit, that is, the sludge in each interval is detected and an electrical signal is generated, and several sub-detection circuits are connected in parallel to maximize the current of the total circuit. The current value of the total circuit is compared with the limited current value. The limited current value refers to the maximum capacity of sludge that the dredging pump can pump per unit time to generate a current signal under pressure. When the current signal exceeds the limit, the current signal is transmitted to the contraction cylinder through the controller, and the contraction cylinder is controlled to drive the two movable seats to slide toward opposite ends, thereby reducing the sludge feeding length entering the dredging chamber and reducing the sludge feed amount, which is beneficial to improving the cleaning quality of the excessive sludge layer.

[0015] Furthermore, the power device also includes a tightening roller and a driving motor, the driving motor and the tugboat are tightly connected, the output end of the driving motor and the tightening roller are tightly connected, the tightening roller is provided with a groove, the groove is spirally arranged, the dredging pipe is arranged along the groove, the dredging pipe and the groove are in sliding contact, the diameter of the tightening roller is gradually set, the end with the smallest diameter of the tightening roller is close to the driving motor, and the driving motor is electrically connected to the general inspection circuit.

[0016] A driving motor is arranged on the tugboat, and the driving motor is used to output torque to drive the take-up roller to rotate. The dredging pipe is wound in the groove of the take-up roller. The groove is spirally arranged, and the dredging pipe is wound in the middle section. The length of the groove is fixed. During the winding process of the take-up roller, the dredging pipe can be unwound and reeled. During the unwound and reeled process, the dredging pipe is limited on one side by the dredging pump, and the dredging pipe slides along the groove. The length is adjusted according to the thickness of the silt that needs to be pumped in the river channel. When the silt thickness exceeds the limit, the dredging pipe needs to be unwound, and the driving motor drives the take-up roller to rotate. The pipe is detached from the large end of the take-up roller and unwound. During the unwinding process, the tugboat can continue to move forward slowly. The unwinding length of the dredging pipe is adjusted according to the forward speed of the tugboat, so as to keep the base in place, pump the excess silt layer, and increase the local pumping time. By gradually changing the diameter of the take-up roller, the conveying process of the dredging pipe on the channel is a pipeline with a gradually decreasing diameter. Due to the density difference of the mixture of silt and water, the dense silt flows along the outer layer of the dredging pipe under the action of centrifugal force, and the water flows in the inner layer of the dredging pipe for pre-separation.

[0017] Furthermore, the silt removal pipe and the silt removal pump connecting section close to the end with the smallest diameter of the take-up roller are located below the take-up roller; When unwinding: the desilting pipe moves in the direction away from the end with the smallest diameter of the take-up roller; When winding: the dredging pipe moves towards the direction of the end with the smallest diameter of the tightening roller.

[0018] During the unwinding and rewinding process, the dredging pipe enters and exits from the groove near the large end. When moving, the dredging pipe moves axially along the groove on the tightening roller.

[0019] As an optimization, the power device also includes a drainage component, which is connected to the silt removal pipe, and the drainage component includes a drainage pipe and a guide plate, which is connected to the inner side of the drainage pipe, one end of the guide plate is connected to the inlet of the drainage pipe, and the other end is inserted into the silt removal pipe. When the pre-separated water and silt approach the guide plate, the water is guided out of the silt removal pipe through the guide plate and guided into the drainage pipe, and the pumped silt is automatically dewatered, thereby improving the silt removal quality and efficiency.

[0020] As an optimization, the guide plate is an elastic plate, the guide plate is arranged at an angle, and a liquid-facing arc surface is provided near the liquid inlet end of the silt removal pipe. Liquid of equal volume has a small mass, and when it hits the liquid-facing arc surface of the guide plate, it will not deform the guide plate. When the silt hits the liquid-facing arc surface, due to the large mass of the silt, the impact on the guide plate is large, and the guide plate is driven to deform inward through the liquid-facing arc surface. The silt flows from the outside of the deformed guide plate to avoid entering the drainage pipe and affecting the quality of solid-liquid separation.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: after the rake teeth of the present invention lift the silt into the dredging chamber, the silt falls onto the carrier plate below, the carrier plate and the adjustment groove keep rotating, and the rotation center is close to the rake teeth. During the fixed-axis rotation of the carrier plate, the pressure rod below is pressed down, the pressure rod slides along the detection chamber, and the lifting spring is compressed. The compression amount of the lifting spring is positively correlated with the weight of the entering silt, that is, the thicker the local silt layer, the more silt enters instantaneously, the greater the compression amount of the lifting spring, and the more current is generated by the pressure measuring coil cutting the magnetic flux lines of the pressure rod, thereby performing real-time monitoring of the local silt in the river channel; when the current signal exceeds the limit, the current signal is transmitted to the contraction cylinder through the controller, and the contraction cylinder is controlled to drive the two movable seats to slide toward the opposite ends, thereby reducing the weight of the silt entering the dredging chamber. The silt feeding length is shortened, the silt feeding amount is reduced, and the scope of dredging is adjusted, which is beneficial to improving the cleaning quality of the excessive silt layer; when the silt thickness exceeds the limit, the dredging pipe needs to be unwound, and the driving motor drives the tightening roller to rotate, and the dredging pipe is separated from the large end of the tightening roller for unwinding. During the unwinding process, the tugboat can continue to move forward slowly. The unwinding length of the dredging pipe is adjusted according to the forward speed of the tugboat, so as to keep the base in place, pump the excessive silt layer, and increase the local pumping time; by gradually changing the diameter of the tightening roller, the conveying process of the dredging pipe on the channel is a pipeline with a gradually decreasing diameter. Due to the density difference of the mixture of silt and water, the dense silt flows along the outer layer of the dredging pipe under the action of centrifugal force, and the water flows in the inner layer of the dredging pipe for pre-separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become more clear.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the regulating device of the present invention; Figure 3 It is a schematic diagram of local detection of sludge of the present invention; Figure 4 yes Figure 3 A magnified view of a part of the view; Figure 5 It is a schematic diagram of the power transmission for adjusting the desilting time of the present invention; Figure 6 It is a schematic diagram of the structure of the tightening roller of the present invention; Figure 7 It is a schematic diagram of sludge and water separation of the present invention; In the figure: 1. tugboat; 2. power unit; 21. dredging pump; 22. tightening roller; 221. channel; 23. driving motor; 24. drainage assembly; 241. drainage pipe; 242. guide vane; 3. adjusting device; 31. rake seat; 311. base; 3111. adjusting slot; 3112. detection chamber; 3113. transmission slot; 3114. dredging chamber; 312. rake teeth; 313. movable seat; 314. retraction cylinder; 32. detection assembly; 321. pressure rod; 322. lifting spring; 323. pressure measuring coil; 33. carrier plate; 4. dredging pipe. DETAILED DESCRIPTION

[0024] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0025] The present invention provides a technical solution: like Figure 1~Figure 2 As shown, a municipal river channel ship-towed dredging device comprises a tugboat 1, a power device 2, a regulating device 3 and a dredging pipe 4. The tugboat 1 is connected to the power device 2, the power device 2 is connected to the dredging pipe 4, the power device 2 is used to control the unwinding length of the dredging pipe 4, the dredging pipe 4 is connected to the regulating device 3 through pipelines, the regulating device 3 is placed in the river channel, and the regulating device 3 is used to adjust the dredging area.

[0026] The tugboat 1 is used as the main carrier to drive other devices to move. It is connected to the regulating device 3 through the dredging pipe 4. The regulating device 3 is placed in the river channel to remove the silt in the river channel. According to the thickness of the silt, the dredging area is automatically adjusted to ensure the dredging quality. The regulating device 3 controls the unwinding length of the dredging pipe 4 according to the identified silt layer thickness, thereby automatically adjusting the local dredging time.

[0027] like Figure 1~Figure 4 As shown, the power device 2 includes a silt removal pump 21, which is placed on the tugboat 1. The tugboat 1 is provided with a silt removal tank, the output end of the silt removal pump 21 is connected to the silt removal tank pipeline, and the input end of the silt removal pump 21 is connected to the silt removal pipe 4; The adjusting device 3 comprises a rake seat 31, the silting pipe 4 is connected to the rake seat 31, the rake seat 31 is placed in the river channel, the rake seat 31 comprises a base 311 and a movable seat 313, a silting chamber 3114 is provided on the base 311, the silting chamber 3114 faces the silt at the bottom of the river channel, the silting pipe 4 is connected to the silting chamber 3114 through a pipeline, a plurality of rake teeth 312 are provided on the base 311 facing the direction of travel of the tugboat 1, the rake teeth 312 are inserted into the silt in the river channel, adjusting grooves 3111 are provided on both sides of the silting chamber 3114, the movable seat 313 is slidably connected to the adjusting grooves 3111, a contraction cylinder 314 is provided on both sides of the base 311, and the output end of the contraction cylinder 314 is fastened to the movable seat 313.

[0028] The dredging pump 21 is placed on the tugboat 1 as the main power part. It is connected to the regulating device 3 through the dredging pipe 4 to pump the adsorbed silt into the dredging bin for easy transportation to the shore for treatment. The rake seat 31 is set and the rake teeth 312 are inserted into the silt layer. During the forward movement of the tugboat 1, the rake teeth 312 will be driven to lift the silt. The lifted silt is located in the dredging chamber 3114 and moves up along the rake teeth 312. When it moves to the end, the dredging pump 21 is connected to the dredging chamber 3114 through the dredging pipe 4. At this time, the silt continues to accumulate and move up with the movement of the tugboat 1, reducing the proportion of the upper water body and improving the silt pumping quality. During the movement of the tugboat, if there is too much local silt and the silt pumping cannot be completed within a unit time, the relative position of the two movable seats 313 is adjusted by the retracting cylinder 314, thereby adjusting the range of dredging, and the movable seat 313 is slidably guided by the adjusting groove 3111.

[0029] like Figure 3~Figure 4 As shown, the adjusting device 3 also includes a plurality of carrier plates 33, a transmission groove 3113 is provided at the lower end of the silting cavity 3114, the lower ends of the plurality of carrier plates 33 are rotatably connected to the transmission groove 3113, the side walls of adjacent carrier plates 33 are in contact, a plurality of detection cavities 3112 are provided at the lower end of the transmission groove 3113, a detection assembly 32 is provided in the detection cavity 3112, the detection assembly 32 and the carrier plate 33 are movably connected, the detection assembly 32 includes a pressure rod 321, a lifting spring 322 is provided at the lower end of the pressure rod 321, the pressure rod 321 is connected to the detection cavity 3112 through the lifting spring 322, the top end of the pressure rod 321 abuts against the carrier plate 33, the pressure rod 321 is made of magnet material, a pressure measuring coil 323 is provided in the detection cavity 3112, and the pressure measuring coil 323 is located at the outer ring of the pressure rod 321.

[0030] By setting the carrier plate 33, the rake teeth 312 fall onto the carrier plate 33 below after lifting the silt into the silting chamber 3114, and the carrier plate 33 and the adjustment slot 3111 keep rotating, with the center of rotation close to the rake teeth 312. During the fixed-axis rotation of the carrier plate 33, the pressure rod 321 below is pressed down, and the pressure rod 321 slides along the detection chamber 3112 and compresses the lifting spring 322. The compression amount of the lifting spring 322 is positively correlated with the weight of the entering silt, that is, the thicker the local silt layer is, the more silt enters instantaneously, the greater the compression amount of the lifting spring 322, and the more current is generated by the pressure coil 323 cutting the magnetic flux lines of the pressure rod 321, thereby real-time monitoring of the local silt in the river channel. The adjacent sides of the carrier plates 33 are kept in contact, which is used for local sealing and improving the accuracy of silt monitoring.

[0031] like Figure 4 As shown, the pressure measuring coil 323 and the pressure rod 321 constitute a sub-detection circuit, and a plurality of sub-detection circuits are connected in parallel to form a general detection circuit, and the contraction cylinder 314 is electrically connected to the general detection circuit; When the current of the general inspection circuit exceeds the limit: the contraction cylinder 314 drives the two movable seats 313 to move toward the center.

[0032] The pressure measuring coil 323 and the pressure rod 321 in the same group constitute a sub-detection circuit, that is, the sludge in each interval is detected and an electrical signal is generated, and several sub-detection circuits are connected in parallel to maximize the current of the total circuit, and the current value of the total circuit is compared with the limited current value. The limited current value refers to the maximum capacity of sludge that the dredging pump 21 can pump per unit time to generate a current signal by applying pressure. When the current signal exceeds the limit, the current signal is transmitted to the retraction cylinder 314 through the controller, and the retraction cylinder 314 is controlled to drive the two movable seats 313 to slide toward the opposite ends, thereby reducing the sludge feeding length entering the dredging chamber 3114, reducing the sludge feed amount, and adjusting the dredging range, which is beneficial to improving the cleaning quality of the over-limit sludge layer.

[0033] like Figure 5~Figure 7 As shown, the power device 2 also includes a tightening roller 22 and a driving motor 23. The driving motor 23 is tightly connected to the tugboat 1, and the output end of the driving motor 23 is tightly connected to the tightening roller 22. A groove 221 is provided on the tightening roller 22. The groove 221 is spirally arranged, and the dredging pipe 4 is arranged along the groove 221. The dredging pipe 4 and the groove 221 are in sliding contact. The diameter of the tightening roller 22 is gradually set, and the end with the smallest diameter of the tightening roller 22 is close to the driving motor 23. The driving motor 23 is electrically connected to the general inspection circuit.

[0034] A driving motor 23 is provided on the tugboat 1, and the driving motor is used to output torque to drive the tightening roller 22 to rotate. The dredging pipe 4 is wound in the groove 221 of the tightening roller 22. The groove 221 is spirally arranged, and the dredging pipe 4 is wound in the middle section. The length of the groove 221 is fixed. During the winding process of the tightening roller 22, the dredging pipe 4 can be unwound and reeled. During the unwound and reeled process, the dredging pipe 4 is limited on one side by the dredging pump 21, and the dredging pipe 4 slides along the groove 221. The length is adjusted according to the thickness of the silt that needs to be pumped in the river channel. When the silt thickness exceeds the limit, the dredging pipe 4 needs to be unwound, and the driving motor 23 drives the tightening The roller 22 rotates, and the dredging pipe 4 is separated from the large end of the tightening roller 22 and unwound. During the unwinding process, the tugboat 1 can continue to move forward slowly. The unwinding length of the dredging pipe 4 is adjusted according to the forward speed of the tugboat 1, so as to keep the base 311 in place, pump the excess silt layer, and increase the local pumping time. The diameter of the tightening roller 22 is gradually changed, so that the conveying process of the dredging pipe 4 on the channel 221 is a pipeline with a gradually decreasing diameter. Due to the density difference of the mixture of silt and water, the dense silt flows along the outer layer of the dredging pipe 4 under the action of centrifugal force, and the water flows in the inner layer of the dredging pipe 4 for pre-separation.

[0035] like Figure 5 As shown, the connecting section between the desilting pipe 4 and the desilting pump 21 near the end with the smallest diameter of the tightening roller 22 is located below the tightening roller 22; When unwinding: the desilting pipe 4 moves in a direction away from the end with the smallest diameter of the tightening roller 22; When winding: the desilting pipe 4 moves toward the direction of the end with the smallest diameter of the tightening roller 22.

[0036] During the unwinding and rewinding processes, the desilting pipe 4 enters and exits from the groove 221 near the large end. When moving, the desilting pipe 4 moves axially along the groove 221 on the tightening roller 22 .

[0037] As an optimization, the power device 2 further includes a drainage assembly 24, which is connected to the silting pipe 4. The drainage assembly 24 includes a drainage pipe 241 and a guide plate 242. The drainage pipe 241 is connected to the inner side of the silting pipe 4. One end of the guide plate 242 is connected to the inlet of the drainage pipe 241, and the other end is inserted into the silting pipe 4. When the pre-separated water and silt approach the guide plate 242, the water is guided out of the silting pipe 4 through the guide plate 242 and guided into the drainage pipe 241, and the pumped silt is automatically dewatered, thereby improving the silting quality and efficiency.

[0038] As an optimization, the guide piece 242 is an elastic piece, the guide piece 242 is arranged obliquely, and the guide piece 242 is provided with a liquid-facing arc surface near the liquid inlet end of the silt removal pipe 4. The mass of equal volume of liquid is small, and it hits the liquid-facing arc surface of the guide piece 242, which will not deform the guide piece 242. When the silt hits the liquid-facing arc surface, due to the large mass of the silt, the impact on the guide piece 242 is large, and the guide piece 242 is driven to deform inward by the liquid-facing arc surface. The silt flows from the outside of the deformed guide piece 242 to avoid entering the drainage pipe 241 and affecting the solid-liquid separation quality.

[0039] The working principle of the present invention is as follows: after the rake teeth 312 lift the silt into the silting chamber 3114, the silt falls onto the carrier plate 33 below, and the carrier plate 33 and the adjusting slot 3111 keep rotating, with the rotation center close to the rake teeth 312. During the fixed-axis rotation of the carrier plate 33, the pressure rod 321 below is pressed down, and the pressure rod 321 slides along the detection chamber 3112 and compresses the lifting spring 322. The compression amount of the lifting spring 322 is positively correlated with the weight of the entering silt, that is, the thicker the local silt layer, the more silt enters instantaneously, the greater the compression amount of the lifting spring 322, and the more current is generated by the pressure measuring coil 323 cutting the magnetic flux lines of the pressure rod 321, thereby performing real-time monitoring of the local silt in the river channel; when the current signal exceeds the limit, the current signal is transmitted to the contraction cylinder 314 through the controller, and the contraction cylinder 314 is controlled to drive the two movable seats 313 to slide toward the opposite ends, thereby reducing the pressure. The silt feeding length entering the silt removal chamber 3114 is increased, the silt feeding amount is reduced, and the silt removal range is adjusted, which is beneficial to improving the cleaning quality of the over-limit silt layer; when the silt thickness exceeds the limit, the silt removal pipe 4 needs to be unwound, and the driving motor 23 drives the tightening roller 22 to rotate, and the silt removal pipe 4 is separated from the large end of the tightening roller 22 to be unwound. During the unwinding process, the tugboat 1 can still continue to move forward slowly, and the unwinding length of the silt removal pipe 4 is adjusted according to the forward movement speed of the tugboat 1, so as to keep the base 311 in place, pump the over-limit silt layer, and increase the local pumping time; by gradually changing the diameter of the tightening roller 22, the conveying process of the silt removal pipe 4 on the channel 221 is a pipeline with a gradually decreasing diameter. Due to the density difference of the mixture of silt and water, the dense silt flows along the outer layer of the silt removal pipe 4 under the action of centrifugal force, and the water flows in the inner layer of the silt removal pipe 4 for pre-separation.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A municipal river boat towing dredging device, characterized by: The dredging device comprises a tugboat (1), a power device (2), a regulating device (3) and a dredging pipe (4); the tugboat (1) is connected to the power device (2); the power device (2) is connected to the dredging pipe (4); the power device (2) is used to control the unwinding length of the dredging pipe (4); the dredging pipe (4) is connected to the regulating device (3) via a pipeline; the regulating device (3) is placed in a river channel; and the regulating device (3) is used to adjust the dredging area.

2. A municipal river boat-towed dredging device according to claim 1, characterized in that: The power device (2) comprises a dredging pump (21), the dredging pump (21) being placed on the tugboat (1), the tugboat (1) being provided with a dredging bin, the output end of the dredging pump (21) being connected to a dredging bin pipeline, and the input end of the dredging pump (21) being connected to a dredging pipe (4); The regulating device (3) comprises a rake seat (31), the dredging pipe (4) and the rake seat (31) are connected, the rake seat (31) is placed in a river channel, the rake seat (31) comprises a base (311) and a movable seat (313), a dredging chamber (3114) is provided on the base (311), the dredging chamber (3114) faces the silt at the bottom of the river channel, the dredging pipe (4) and the dredging chamber (3114) are connected by a pipeline, the base (311) is provided with a plurality of rake teeth (312) facing the direction of travel of the tugboat (1), the rake teeth (312) are inserted into the silt in the river channel, the dredging chamber (3114) is provided with regulating grooves (3111) on both sides, the movable seat (313) and the regulating grooves (3111) are slidably connected, and a contraction cylinder (314) is provided on both sides of the base (311), and an output end of the contraction cylinder (314) and the movable seat (313) are tightly connected.

3. A municipal river boat-towed dredging device according to claim 2, characterized in that: The regulating device (3) further comprises a plurality of carrier plates (33), a transmission groove (3113) being provided at the lower end of the silting chamber (3114), the lower ends of the plurality of carrier plates (33) being rotatably connected to the transmission groove (3113), the side walls of adjacent carrier plates (33) being in contact, a plurality of detection chambers (3112) being provided at the lower end of the transmission groove (3113), a detection assembly (32) being provided in the detection chamber (3112), the detection assembly (32) and the carrier plate (33) being rotatably connected to the lower ends of the plurality of carrier plates (33), the side walls of adjacent carrier plates (33) being in contact, The detection assembly (32) comprises a pressure rod (321), a lifting spring (322) is provided at the lower end of the pressure rod (321), the pressure rod (321) is connected to the detection chamber (3112) via the lifting spring (322), the top end of the pressure rod (321) is in contact with the carrier plate (33), the pressure rod (321) is made of a magnetic material, a pressure measuring coil (323) is provided in the detection chamber (3112), and the pressure measuring coil (323) is located on the outer ring of the pressure rod (321).

4. A municipal river boat-towed dredging device according to claim 3, characterized in that: The pressure measuring coil (323) and the pressure rod (321) form a sub-detection circuit, a plurality of the sub-detection circuits are connected in parallel to form a general detection circuit, and the contraction cylinder (314) is electrically connected to the general detection circuit; When the current of the general inspection circuit exceeds the limit, the contraction cylinder (314) drives the two movable seats (313) to move toward the center.

5. A municipal river boat-towed dredging device according to claim 4, characterized in that: The power device (2) further comprises a tightening roller (22) and a driving motor (23), the driving motor (23) being tightly connected to the tugboat (1), the output end of the driving motor (23) being tightly connected to the tightening roller (22), the tightening roller (22) being provided with a groove (221), the groove (221) being arranged in a spiral, the dredging pipe (4) being arranged along the groove (221), the dredging pipe (4) being in sliding contact with the groove (221), the diameter of the tightening roller (22) being arranged to change gradually, the end with the smallest diameter of the tightening roller (22) being close to the driving motor (23), and the driving motor (23) being electrically connected to the general inspection circuit.

6. A municipal river boat-towed dredging device according to claim 5, characterized in that: The connecting section between the silt removal pipe (4) and the silt removal pump (21) close to the end with the smallest diameter of the tightening roller (22) is located below the tightening roller (22); When unwinding: the desilting pipe (4) moves in a direction away from the end with the smallest diameter of the tightening roller (22); When winding up: the desilting pipe (4) moves in a direction close to the end with the smallest diameter of the tightening roller (22).

7. A municipal river channel boat-towed dredging device according to claim 6, characterized in that: The power device (2) further comprises a drainage component (24), the drainage component (24) being in communication with the silt removal pipe (4), the drainage component (24) comprising a drainage pipe (241) and a guide plate (242), the drainage pipe (241) being in communication with the inner side of the silt removal pipe (4), one end of the guide plate (242) being connected to the inlet of the drainage pipe (241), and the other end being inserted into the silt removal pipe (4).

8. The municipal river boat-towed dredging device according to claim 7 is characterized by: The guide plate (242) is an elastic plate. The guide plate (242) is arranged obliquely. The guide plate (242) is provided with a liquid-facing arc surface near the liquid inlet end of the silt removal pipe (4).

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