A pipeline desilting device for smart city construction

Abstract

The invention relates to the field of pipeline dredging, and specifically to a pipeline dredging device for smart city construction, comprising a guide shell, a walking outer bracket, a central water pipe, a jet mechanism, a scraper mechanism and a plurality of reverse thrust spraying mechanisms, each of which comprises a plurality of reverse thrust nozzles, the jet mechanism comprises a jet disc, and the scraper mechanism comprises a plurality of scraper claws. The device is driven by hydraulic power. After the central water pipe is filled with water, the reverse thrust spraying mechanism utilizes the reaction force during water spraying to drive the rotation of the central water pipe. After the central water pipe rotates, the scraper claws in the scraper mechanism are driven to rotate and scrape away the silt attached to the pipe wall. In this process, the reverse thrust spraying mechanism not only sprays water to the pipe wall, but also scrapes the wetted silt, thereby improving the cleaning efficiency. The jet disc and the auxiliary flushing tail sleeve located at the front and rear ends of the device can simultaneously spray water to the front and rear ends of the device, thereby achieving all-round cleaning of the pipe wall and improving the cleanliness of the pipeline.

Description

Technical Field

[0001] The present invention relates to the field of pipeline dredging, and in particular to a pipeline dredging device for smart city construction. Background Art

[0002] Pipeline desilting refers to clearing the pipeline, cleaning the silt and other wastes in the pipeline, and keeping it unobstructed for a long time to prevent urban waterlogging. If the pipeline is not desilted regularly, it will cause sewage overflow, pollute the environment, and cause trouble to people's lives. The existing pipeline desilting method is to use a high-pressure cleaning vehicle, or manual traction, push-pull and other methods to clean the silt in the pipeline to the outside of the pipeline, and then transport it to a designated place. The traditional method is time-consuming and labor-intensive, and the cleaning efficiency is low. The existing Chinese patent with the announcement number CN112302152A discloses a pipeline desilting device for smart city construction to solve the problem of time-consuming and labor-intensive traditional methods, but it also has the following defects:

[0003] It uses a motor to drive, and the motor is exposed to sight. When the entire device is cleaning in the pipeline, the silt attached to the pipe wall will fall onto the motor during cleaning, which can easily cause the motor to become damp and short-circuit. The motor needs to be powered on to work, and the wires are easily exposed to moisture in a damp pipeline for a long time and short-circuit. Therefore, it is necessary to provide a pipeline dredging device for smart city construction that does not require a motor to drive to solve the above problems. Summary of the invention

[0004] Based on this, it is necessary to provide a pipeline dredging device for smart city construction to address the existing technical problems.

[0005] In order to solve the existing technical problems, the technical solution adopted by the present invention is: a pipeline dredging device for smart city construction, comprising:

[0006] The diversion shell is horizontally arranged and is in the shape of a cannonball as a whole. The tapered cone at one end is used to contact the silt first and disperse the accumulated silt.

[0007] The walking outer bracket is arranged on the flow guide shell, supports the flow guide shell and is used for allowing the flow guide shell to move in the pipeline;

[0008] The central water pipe is horizontal and rotatably arranged in the guide shell, and a water inlet is arranged at one end of the central water pipe away from the conical end of the guide shell;

[0009] A plurality of reverse thrust spraying mechanisms are arranged on the central water pipe at intervals along the axial direction of the central water pipe, each of which comprises a plurality of reverse thrust nozzles arranged in a circular array and laterally extended outside the guide shell, and after the central water pipe is filled with water, the plurality of reverse thrust nozzles utilize the reaction force of water spraying to drive the central water pipe to rotate;

[0010] The spray mechanism is arranged at one end of the central water pipe close to the conical end of the guide shell. The spray mechanism includes a spray plate capable of spraying water. The spray plate is used to flush the silt in front when the conical end of the guide shell contacts the silt first after the central water pipe is filled with water, so as to facilitate the movement of the guide shell.

[0011] The scraper mechanism is arranged at the middle end of the central water pipe. The scraper mechanism includes a plurality of scrapers in a circular array and laterally extended from the guide shell. The plurality of scrapers are used to rotate with the central water pipe after the central water pipe rotates and scrape away the silt on the inner wall of the pipe.

[0012] Furthermore, the guide shell is split, including multiple segmented shells spaced apart in the horizontal direction, and a plurality of reverse thrust nozzles and a plurality of scrapers are laterally extended from the gap between two adjacent segmented shells, wherein the multiple segmented shells located in the middle section of the guide shell are cylindrical, and the segmented shells located at the conical end of the guide shell are conical.

[0013] Furthermore, the central water pipe is provided with a plurality of No. 1 sealed bearings evenly distributed along its axial direction, and each No. 1 sealed bearing is embedded in the corresponding segmented shell. One end of the central water pipe is located in the conical segmented shell, and the other end passes through the outside of the guide shell. The water inlet is coaxially opened at the end of the extended end of the central water pipe, and a water inlet tail pipe is coaxially fixed in the water inlet, wherein the segmented shell without the No. 1 sealed bearing is fixedly connected to the central water pipe.

[0014] Furthermore, a No. 2 sealed bearing is embedded in one end of the central water pipe located in the conical segmented shell and the inner ring of the No. 2 sealed bearing is located in the central water pipe, the outer ring of the No. 2 sealed bearing is exposed outside the central water pipe, one side of the spray disc is an open structure and is sleeved on the outer ring of the No. 2 sealed bearing, a plurality of spray holes in a divergent shape and spraying water in the forward direction of the guide shell are opened on the spray disc, a connecting shaft is fixedly connected to the center of the spray disc, one end of the connecting shaft horizontally passes through the inner ring of the No. 2 sealed bearing and extends into the central water pipe, and a propeller fan is coaxially fixed to the extended end of the connecting shaft.

[0015] Furthermore, each reverse thrust nozzle is fixed on the central water pipe and is connected to the central water pipe. The water spraying direction of each reverse thrust nozzle can be tangent to the circumferential direction of the central water pipe, so that the reaction force after the water spraying of several reverse thrust nozzles drives the central water pipe to rotate.

[0016] Further, each scraper claw comprises:

[0017] The fixed column is fixed on the outer wall of the central water pipe and is laterally extended outside the gap between the adjacent two end segmented shells. The interior of the fixed column is hollow, and the end facing outward is an open structure. Two symmetrical limiting strips are formed on the inner wall of the fixed column, and the length direction of each limiting strip is consistent with the axial direction of the fixed column.

[0018] The piston is movably arranged in the fixed column, the cap end of the piston faces inwards and the outer wall of the cap end is formed with two limiting grooves corresponding to the limiting strips one by one, each limiting groove is matched with the corresponding limiting strip, and the end of the cap end of the piston is provided with a columnar receiving groove inwardly along its axial direction;

[0019] A No. 1 spring is arranged in the columnar receiving groove, and two ends of the No. 1 spring are respectively in conflict with the bottom wall in the fixed column and the bottom of the columnar receiving groove;

[0020] An annular mounting plate is coaxially fixed to one end of the fixed column having an opening, and the other end of the piston passes through the annular mounting plate and extends out of the fixed column;

[0021] The scraper head has one end in a shovel shape and the other end fixedly arranged on the protruding end of the piston.

[0022] Furthermore, the outer walking support includes two groups of walking wheels which are symmetrical and spaced apart along the axial direction of the central water pipe, each group of walking wheels includes a plurality of supporting uprights and a plurality of guide wheels corresponding to the supporting uprights one by one, the plurality of supporting uprights are evenly distributed along the circumferential direction of the segmented shell located in the middle section of the guide shell, each supporting upright is fixedly connected to the corresponding segmented shell and is laterally extended outside the corresponding segmented shell, each guide wheel is axially connected to the extended end of the corresponding supporting upright, and the axial direction of each guide wheel is perpendicular to the axial direction of the central water pipe.

[0023] Furthermore, each supporting vertical plate comprises:

[0024] The supporting shell is rectangular in shape, extends transversely outside the corresponding segmented shell and is fixedly connected to the segmented shell, and one end of the supporting shell facing outward is an open structure;

[0025] A plurality of No. 2 springs whose length direction is consistent with the support shell, the plurality of No. 2 springs are distributed in a horizontal row in the support shell, and one end of each No. 2 spring is in conflict with the bottom wall in the support shell;

[0026] A movable arm is movably arranged in the supporting shell, and a rectangular receiving groove for covering a plurality of No. 2 springs is opened inwardly at one end of the movable arm facing the supporting shell, the other end of each No. 2 spring is in conflict with the bottom of the rectangular receiving groove, and the other end of the movable arm is extended out of the supporting shell;

[0027] Wherein, each guide wheel is axially connected to the outgoing end of the movable arm.

[0028] Furthermore, an auxiliary flushing tail sleeve is provided on the extended end of the central water pipe. The auxiliary flushing tail sleeve is annular and coaxially sleeved on the extended end of the central water pipe. A plurality of water spray channels in a circular array are opened in the auxiliary flushing tail sleeve. One end of each water spray channel passes through the auxiliary flushing tail sleeve toward the side of the water inlet, and the other end of each water spray channel is inclined toward the center of the central water pipe, and is connected to the central water pipe after the auxiliary flushing tail sleeve is passed through.

[0029] Compared with the prior art, the present invention has the following beneficial effects: compared with the traditional dredging method, the present invention is driven by hydraulic power. After the central water pipe is filled with water, the reverse thrust spraying mechanism can use the reaction force during water spraying to drive the rotation of the central water pipe. At the same time, after the central water pipe rotates, the scraping claws in the scraping claw mechanism are driven to rotate and scrape away the silt attached to the pipe wall. In this process, the reverse thrust spraying mechanism not only sprays water onto the pipe wall, but also scrapes off the wetted silt, thereby improving the cleaning efficiency. After the central water pipe rotates, the spray discs and auxiliary flushing tail sleeves located at the front and rear ends of the device can simultaneously spray water to the front and rear ends of the device, thereby achieving all-round cleaning of the pipe wall and improving the cleanliness of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment;

[0031] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the indicated A1;

[0032] Figure 3 is a top view of an embodiment;

[0033] Figure 4 yes Figure 3 Section view along line AA;

[0034] Figure 5 yes Figure 4 A partial enlarged schematic diagram of A2 is indicated;

[0035] Figure 6 is a three-dimensional structural exploded view of the injection mechanism of the embodiment;

[0036] Figure 7 is a three-dimensional structural exploded view of the scraping claw of the embodiment;

[0037] Figure 8 1 is a schematic diagram of the three-dimensional structure of the piston of the embodiment;

[0038] Fig. 9 is a three-dimensional structural exploded view of the traveling wheel of the embodiment;

[0039] Fig.10 It is a schematic diagram of the three-dimensional structure of the movable arm of the embodiment.

[0040] The numbers in the figure are: 1. Central water pipe; 2. Water inlet; 3. Reverse thrust nozzle; 4. Jet disc; 5. Segmented shell; 6. No. 1 sealed bearing; 7. Water inlet tail pipe; 8. No. 2 sealed bearing; 9. Jet through hole; 10. Connecting shaft; 11. Propeller fan; 12. Fixed column; 13. Limiting strip; 14. Piston; 15. Limiting groove; 16. Columnar receiving groove; 17. No. 1 spring; 18. Annular mounting plate; 19. Scraper head; 20. Water spray channel; 21. Guide wheel; 22. Support shell; 23. No. 2 spring; 24. Movable arm; 25. Rectangular receiving groove; 26. Auxiliary flushing tail sleeve. DETAILED DESCRIPTION

[0041] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] refer to Figures 1 to 10 A pipeline desilting device for smart city construction is shown, comprising:

[0043] The diversion shell is horizontally arranged and is in the shape of a cannonball as a whole. The tapered cone at one end is used to contact the silt first and disperse the accumulated silt.

[0044] The walking outer bracket is arranged on the flow guide shell, supports the flow guide shell and is used for allowing the flow guide shell to move in the pipeline;

[0045] The central water pipe 1 is horizontal and rotatably arranged in the guide shell. The end of the central water pipe 1 away from the conical end of the guide shell is provided with a water inlet 2;

[0046] A plurality of reverse thrust spraying mechanisms are arranged on the central water pipe 1 at intervals along the axial direction of the central water pipe 1, each of which comprises a plurality of reverse thrust nozzles 3 arranged in a circular array and laterally extended outside the guide housing. After the central water pipe 1 is filled with water, the plurality of reverse thrust nozzles 3 use the reaction force of water spraying to drive the central water pipe 1 to rotate;

[0047] The spray mechanism is arranged at one end of the central water pipe 1 close to the conical end of the guide shell. The spray mechanism includes a spray plate 4 capable of spraying water. The spray plate 4 is used to flush the silt in front when the conical end of the guide shell contacts the silt first after the central water pipe 1 is filled with water, so as to facilitate the movement of the guide shell.

[0048] The scraper mechanism is arranged at the middle end of the central water pipe 1. The scraper mechanism includes a plurality of scrapers arranged in a circular array and laterally extended from the guide shell. The plurality of scrapers are used to rotate with the central water pipe 1 after the central water pipe 1 rotates and scrape away the silt on the inner wall of the pipe.

[0049] refer to Figure 1 and Figure 3As shown, the guide shell is of split type, including multiple segmented shells 5 spaced apart in the horizontal direction, and a plurality of reverse thrust nozzles 3 and a plurality of scrapers are laterally extended from the gap between two adjacent segmented shells 5, wherein the multiple segmented shells 5 located in the middle section of the guide shell are all cylindrical, and the segmented shells 5 located at the conical end of the guide shell are conical.

[0050] A number of reverse thrust nozzles 3 are connected to the central water pipe 1, and the reaction force during water spraying is used to drive the central water pipe 1 to rotate. A number of scrapers are connected to the central water pipe 1, so that after the central water pipe 1 rotates, the scrapers can be driven to rotate and scrape away the silt on the inner wall of the pipe. Then the diversion shell is divided into a plurality of segmented shells 5 with intervals, which is convenient for the reverse thrust nozzles 3 and the scrapers to be installed on the central water pipe 1. Among them, the conical segmented shell 5 is used to disperse the silt. When the diversion shell moves horizontally in the pipeline through the walking outer bracket, if there is too much silt accumulated in the pipeline, it will hinder the forward movement of the diversion shell. At this time, the conical segmented shell 5 first contacts the silt and disperses the silt, making it easier for the diversion shell to move in the pipeline.

[0051] refer to Figure 3 and Figure 4 As shown, the central water pipe 1 is sleeved with a plurality of No. 1 sealed bearings 6 evenly distributed along its axial direction, and each No. 1 sealed bearing 6 is embedded in the corresponding segmented shell 5. One end of the central water pipe 1 is located in the tapered segmented shell 5, and the other end passes through the guide shell. The water inlet 2 is coaxially opened at the end of the extended end of the central water pipe 1, and a water inlet tail pipe 7 is coaxially fixedly provided in the water inlet 2, wherein the segmented shell 5 without the No. 1 sealed bearing 6 is fixedly connected to the central water pipe 1.

[0052] The water inlet tail pipe 7 is the water inlet end, and when in use, a hose (not shown in the figure) can be connected to allow water to flow. A plurality of No. 1 sealed bearings 6 provide the central water pipe 1 with rotation.

[0053] refer to Figure 4 and Figure 6 As shown, a No. 2 sealed bearing 8 is embedded in one end of the central water pipe 1 located in the conical segmented shell 5, and the inner ring of the No. 2 sealed bearing 8 is located in the central water pipe 1, and the outer ring of the No. 2 sealed bearing 8 is exposed outside the central water pipe 1. One side of the injection disc 4 is an open structure and is sleeved on the outer ring of the No. 2 sealed bearing 8. The injection disc 4 is provided with a plurality of injection through holes 9 that are divergent and spray water in the forward direction of the guide shell. A connecting shaft 10 is fixedly connected to the center of the injection disc 4, and one end of the connecting shaft 10 horizontally passes through the inner ring of the No. 2 sealed bearing 8 and extends into the central water pipe 1. A propeller fan 11 is coaxially fixed to the extended end of the connecting shaft 10.

[0054] During the entire operation of the dredging device, the water inlet tail pipe 7 needs to be continuously inflowed with water, and a pressure pump (not shown in the figure) is added on the ground to ensure that the water entering the water inlet tail pipe 7 has a certain water pressure. Since the propeller 11 and the water inlet tail pipe 7 are respectively located at the two ends of the central water pipe 1, when water is injected into the water inlet tail pipe 7, the water flowing into the central water pipe 1 will rush to the propeller 11 and impact the propeller 11, driving the propeller 11 to rotate. When the propeller 11 rotates, the transmission action of the connecting shaft 10 drives the rotation of the injection disc 4 mounted on the outer ring of the No. 2 sealed bearing 8. At the same time, the water after passing through the propeller 11 will rush to the injection disc 4 and flow out from a number of injection holes 9. Then the injection disc 4 will be in a state of rotating and spraying water, thereby rotating and spraying out. The water will flush the sludge in front of the guide shell, wherein the continuous introduction of high-pressure water into the water inlet tail pipe 7 not only enables the water flowing in the central water pipe 1 to have a certain flow velocity to drive the propeller 11 to rotate when the central water pipe 1 is initially filled with water, but also increases the water pressure in the central water pipe 1 after the central water pipe 1 is filled, so that the water impact force is weakened and the rotation speed of the propeller 11 slows down, then the jet disk 4 will only rotate at a high speed to spray water when the central water pipe 1 is not filled, and when the jet disk 4 sprays water subsequently, since the central water pipe 1 is filled, the water sprayed by the jet disk 4 will gradually increase in pressure and have a certain flushing force, so that the sludge in front of the guide shell can be flushed and flowed, which not only cleans the sludge in front of the guide shell, but also facilitates the subsequent movement of the guide shell in the pipeline.

[0055] refer to Figure 4 As shown, each reverse thrust nozzle 3 is fixed on the central water pipe 1 and is connected to the central water pipe 1. The water spraying direction of each reverse thrust nozzle 3 can be tangent to the circumferential direction of the central water pipe 1, so that the reaction force after the water spraying of several reverse thrust nozzles 3 drives the central water pipe 1 to rotate.

[0056] The reverse thrust nozzle 3 is used to spray water after the central water pipe 1 is filled, and the reaction force generated when spraying water is used to drive the central water pipe 1 to rotate. Since the rotation of the central water pipe 1 needs to be after it is filled, when the central water pipe 1 is first filled with water, the central water pipe 1 does not rotate, and the injection disc 4 is driven to rotate by the propeller 11. After the central water pipe 1 rotates, it will drive each scraper claw to rotate, so that each scraper claw can clean the silt attached to the inner wall of the pipe.

[0057] refer to Figure 5 , Figure 7 and Figure 8 As shown, each scraper claw includes:

[0058] The fixed column 12 is fixedly arranged on the outer wall of the central water pipe 1 and is laterally extended outside the gap between the adjacent two end segmented shells 5. The interior of the fixed column 12 is hollow, and one end facing outward is an open structure. Two symmetrical limiting strips 13 are formed on the inner wall of the fixed column 12, and the length direction of each limiting strip 13 is consistent with the axial direction of the fixed column 12;

[0059] The piston 14 is movably disposed in the fixed column 12, the cap end of the piston 14 faces inwards and the outer wall of the cap end is formed with two limiting grooves 15 corresponding to the limiting strips 13, each limiting groove 15 is matched with the corresponding limiting strip 13, and the end of the cap end of the piston 14 is provided with a columnar receiving groove 16 inwardly along its axial direction;

[0060] A first spring 17 is disposed in the columnar receiving groove 16, and two ends of the first spring 17 are respectively in conflict with the bottom wall of the fixed column 12 and the bottom of the columnar receiving groove 16;

[0061] An annular mounting plate 18 is coaxially fixed to one end of the fixed column 12 having an opening, and the other end of the piston 14 passes through the annular mounting plate 18 and extends out of the fixed column 12;

[0062] The scraper head 19 has one end in a shovel shape and the other end fixedly disposed on the extended end of the piston 14 .

[0063] When the guide housing is in the pipeline, the shovel-shaped end of the scraper head 19 contacts the inner wall of the pipeline and presses the piston 14 inwardly along the radial direction of the central water pipe 1, driving the piston 14 to compress the No. 1 spring 17 inwardly. Figure 5 The scraper head 19 is in an extremely compressed state) so that the scraper head 19 can shrink inwards. When the scraper head 19 rotates, some hard sludge will adhere to the inner wall of the pipe, causing the local inner wall of the pipe to thicken. Then, after the scraper head 19 touches the hard sludge during rotation, it will be subjected to a resistance force. Then, through the elasticity of spring No. 1 17, the scraper head 19 can shrink inwards during rotation, preventing the scraper head 19 from being directly in contact with the hard sludge after rotation and being broken.

[0064] refer to Figure 1 As shown, the outer traveling support includes two groups of traveling wheels which are symmetrical and spaced apart along the axial direction of the central water pipe 1, each group of traveling wheels includes a plurality of supporting uprights and a plurality of guide wheels 21 corresponding to the supporting uprights one by one, the plurality of supporting uprights are evenly distributed along the circumferential direction of the segmented shell 5 located in the middle section of the guide shell, each supporting upright is fixedly connected to the corresponding segmented shell 5 and is laterally extended out of the corresponding segmented shell 5, each guide wheel 21 is axially connected to the extended end of the corresponding supporting upright, and the axial direction of each guide wheel 21 is perpendicular to the axial direction of the central water pipe 1.

[0065] The guide wheel 21 is fixed to the segmented shell 5 through the support vertical plate, so that the entire guide shell is supported by a plurality of support vertical plates in the pipeline. The guide wheel 21 contacts the inner wall of the pipeline through the laterally extended support vertical plates, so that the guide shell can be displaced in the pipeline, while ensuring that the guide shell will not contact the inner wall of the pipeline. Since the pipeline has a circular pipe mouth and the inner wall of the pipeline is relatively slippery, the guide wheels 21 in a circular array can effectively allow the guide shell to move freely in the pipeline.

[0066] refer to Figure 1 , Fig. 9 and Fig.10 As shown, each supporting vertical plate includes:

[0067] The supporting shell 22 is rectangular in shape, extends transversely outside the corresponding segmented shell 5 and is fixedly connected to the segmented shell 5, and one end of the supporting shell 22 facing outward is an open structure;

[0068] A plurality of No. 2 springs 23 whose length direction is consistent with the support shell 22, the plurality of No. 2 springs 23 are arranged in a horizontal row in the support shell 22, and one end of each No. 2 spring 23 is in conflict with the bottom wall in the support shell 22;

[0069] A movable arm 24 is movably disposed in the support housing 22, and a rectangular receiving groove 25 for covering a plurality of No. 2 springs 23 is opened inwardly at one end of the movable arm 24 facing the support housing 22, and the other end of each No. 2 spring 23 is in conflict with the bottom of the rectangular receiving groove 25, and the other end of the movable arm 24 is extended out of the support housing 22;

[0070] Each guide wheel 21 is axially connected to the extension end of the movable arm 24 .

[0071] Each movable arm 24 can be retracted toward the supporting shell 22 by the elastic force of the corresponding No. 2 spring 23, so that the guide wheel 21 axially connected to the extension end of the movable arm 24 can be elastically retracted toward the supporting shell 22, thereby preventing the guide wheel 21 from rolling on the inner wall of the pipe and driving the diversion shell to come into contact with the hard silt attached to the inner wall of the pipe when moving, thereby hindering the forward movement of the diversion shell.

[0072] refer to Figure 4 As shown, an auxiliary flushing tail sleeve 26 is provided on the extended end of the central water pipe 1. The auxiliary flushing tail sleeve 26 is annular and coaxially sleeved on the extended end of the central water pipe 1. A plurality of water spray channels 20 in a circular array are opened in the auxiliary flushing tail sleeve 26. One end of each water spray channel 20 passes through the auxiliary flushing tail sleeve 26 toward one side of the water inlet 2, and the other end of each water spray channel 20 is inclined toward the center of the central water pipe 1, and is connected to the central water pipe 1 after the auxiliary flushing tail sleeve 26 is passed through.

[0073] When the central water pipe 1 is filled with water, due to the continuous water inflow of the water inlet tail pipe 7, part of the water in the central water pipe 1 will flow into the water spray channel 20, so that the water spray channel 20 sprays water toward the water inlet 2. The water spraying direction of the water spray channel 20 is opposite to the forward direction of the diversion shell. Therefore, the water sprayed from the water spray channel 20 not only cleans the pipe wall behind the diversion shell, but also utilizes the reverse thrust during water spraying to provide a driving force for the diversion shell to move forward, thereby assisting the diversion shell to move forward.

[0074] Working principle:

[0075] This device is used to desilt the pipe connecting two manholes. First, a longer traction rope (not shown in the figure) is fixed to the conical end of the diversion shell, and a hose (not shown in the figure) is connected to the water inlet tail pipe 7. The hose is connected to the water supply source (not shown in the figure) through a pressure pump (not shown in the figure) arranged on the ground. Then the whole device is placed horizontally in one of the manholes, ensuring that the conical end of the diversion shell is facing the pipe mouth of the pipeline. At this time, the traction rope is pulled to the outside of the other manhole through the traction equipment. At this point, the preparation work before dredging is completed. When the traction rope is rotated by the traction equipment, the whole traction rope is tightened and the diversion shell is pulled. Pull it toward the inside of the pipeline, turn on the pressure pump (not shown in the figure) at this time, and inject water into the central water pipe 1. The pressurized water flow will rush to the propeller fan 11 and drive the propeller fan 11 to rotate. At the same time, the injection disc 4 rotates with the propeller fan 11 through the transmission action of the connecting shaft 10, and the water passing through the propeller fan 11 will partially flow out from the injection through hole 9 on the injection disc 4. At this time, the injection disc 4 rotates and sprays water to flush the silt in front of the guide shell. When the central water pipe 1 is filled with water, the reverse thrust nozzle 3 rotates to spray water on the pipe wall to flush the silt attached to the pipe wall, and uses the reaction force during the water spraying to drive the central water pipe 1 to rotate, and the injection disc 4 stops rotating at this time. The water pressure flowing out of the injection through hole 9 increases and gradually becomes a jet shape. At the same time, the water spray channel 20 in the auxiliary flushing tail sleeve 26 rotates and sprays water in the opposite direction of the displacement of the guide shell to flush the pipe wall behind the guide shell, and uses the reaction force of the water spray to provide a driving force for the guide shell to move forward, making it more labor-saving to pull the guide shell. In this process, the scraper claw is driven by the central water pipe 1 to rotate to clean the sludge attached to the pipe wall after being flushed. At this point, the inner wall of the pipeline is cleaned in all directions during the movement of the guide shell in the pipeline. When the guide shell moves to the pipeline outlet, the guide shell is pulled up through the current manhole to pull the hose (not shown in the figure) and the traction rope (not shown in the figure) are removed, wherein, when installing the reverse thrust nozzle 3, it is necessary to ensure that the reverse thrust nozzle 3 is distributed on both sides of the scraper claw. The reverse thrust nozzle 3 located in front of the scraper claw will flush the sludge on the pipe wall for the first time, so that the sludge is loose and easy to be scraped off by the subsequent scraper claw. The reverse thrust nozzle 3 located behind the scraper claw will perform a second cleaning on the pipe wall with the sludge scraped off, so as to achieve the maximum cleanliness of the pipe wall. The scraped sludge will be repeatedly washed and diluted by the water sprayed by the reverse thrust nozzle 3, the spray disc 4 and the auxiliary flushing tail sleeve 26, so that the sludge will not block the pipeline. After the water is passed through the pipeline, the thin sludge will be easily washed away.

[0076] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A pipeline desilting device for smart city construction, characterized in that: include: The diversion shell is horizontally arranged and is in the shape of a cannonball as a whole. The tapered cone at one end is used to contact the silt first and disperse the accumulated silt. The walking outer bracket is arranged on the flow guide shell, supports the flow guide shell and is used for allowing the flow guide shell to move in the pipeline; The central water pipe (1) is horizontal and rotatably arranged in the flow guide shell, and a water inlet (2) is arranged at one end of the central water pipe (1) away from the conical end of the flow guide shell; A plurality of reverse thrust spraying mechanisms are arranged on the central water pipe (1) at intervals along the axial direction of the central water pipe (1), each of the reverse thrust spraying mechanisms comprising a plurality of reverse thrust nozzles (3) arranged in a circular array and laterally extending outside the guide shell, and after the central water pipe (1) is filled with water, the plurality of reverse thrust nozzles (3) utilize the reaction force when spraying water to drive the central water pipe (1) to rotate; The spray mechanism is arranged at one end of the central water pipe (1) close to the conical end of the guide shell, and the spray mechanism comprises a spray plate (4) capable of spraying water. The spray plate (4) is used to flush the sludge in front when the conical end of the guide shell contacts the sludge first after the central water pipe (1) is filled with water, so as to facilitate the movement of the guide shell; A scraper mechanism is arranged at the middle end of the central water pipe (1), the scraper mechanism comprising a plurality of scrapers arranged in a circular array and extending laterally from the flow guide housing, the plurality of scrapers being used to rotate with the central water pipe (1) after the central water pipe (1) rotates and to scrape away sludge on the inner wall of the pipe; The flow guide housing is of split type, comprising a plurality of segmented housings (5) spaced apart in the horizontal direction, a plurality of reverse thrust nozzles (3) and a plurality of scraping claws extending laterally from the gap between two adjacent segmented housings (5), wherein the plurality of segmented housings (5) located in the middle section of the flow guide housing are all cylindrical, and the segmented housings (5) located at the conical end of the flow guide housing are conical; The central water pipe (1) is sleeved with a plurality of No. 1 sealed bearings (6) uniformly distributed along its axial direction, each No. 1 sealed bearing (6) is embedded in a corresponding segmented shell (5), one end of the central water pipe (1) is located in the segmented shell (5) which is tapered therein, and the other end is passed through the outside of the guide shell, the water inlet (2) is coaxially opened at the end of the extended end of the central water pipe (1), and a water inlet tail pipe (7) is coaxially fixedly arranged in the water inlet (2), wherein the segmented shell (5) not provided with the No. 1 sealed bearing (6) is fixedly connected to the central water pipe (1); A No. 2 sealed bearing (8) is embedded in one end of a central water pipe (1) located in a conical segmented shell (5), and the inner ring of the No. 2 sealed bearing (8) is located in the central water pipe (1), and the outer ring of the No. 2 sealed bearing (8) is exposed outside the central water pipe (1). One side of the injection disc (4) is an open structure and is sleeved on the outer ring of the No. 2 sealed bearing (8). The injection disc (4) is provided with a plurality of injection holes (9) that are divergent and spray water in the forward direction of the guide shell. A connecting shaft (10) is fixedly connected to the center of the injection disc (4), and one end of the connecting shaft (10) horizontally passes through the inner ring of the No. 2 sealed bearing (8) and extends into the central water pipe (1). A propeller (11) is coaxially fixedly connected to the extended end of the connecting shaft (10).

2. A pipeline desilting device for smart city construction according to claim 1, characterized in that: Each reverse thrust nozzle (3) is fixedly mounted on the central water pipe (1) and is in communication with the central water pipe (1). The water spraying direction of each reverse thrust nozzle (3) can be tangent to the circumferential direction of the central water pipe (1), so that the central water pipe (1) is driven to rotate by the reaction force after the water spraying of the plurality of reverse thrust nozzles (3).

3. A pipeline desilting device for smart city construction according to claim 1, characterized in that: Each scraper includes: A fixed column (12) is fixedly arranged on the outer wall of the central water pipe (1) and is laterally extended outside the gap between the adjacent two end segmented shells (5). The interior of the fixed column (12) is hollow, and one end facing outward is open. Two symmetrical limiting strips (13) are formed on the inner wall of the fixed column (12). The length direction of each limiting strip (13) is consistent with the axial direction of the fixed column (12). A piston (14) is movably arranged in the fixed column (12), the cap end of the piston (14) faces inwards and the outer wall of the cap end is formed with two limiting grooves (15) corresponding to the limiting strips (13), each limiting groove (15) is matched with the corresponding limiting strip (13), and the end of the cap end of the piston (14) is provided with a columnar receiving groove (16) inwardly along its axial direction; A first spring (17) is arranged in the columnar receiving groove (16), and two ends of the first spring (17) are respectively in conflict with the bottom wall in the fixed column (12) and the bottom of the columnar receiving groove (16); An annular mounting plate (18) is coaxially fixed to an end of the fixed column (12) having an opening, and the other end of the piston (14) passes through the annular mounting plate (18) and extends out of the fixed column (12); The scraper (19) has a shovel-shaped end at one end and a fixed end at the protruding end of the piston (14).

4. A pipeline desilting device for smart city construction according to claim 1, characterized in that: The outer traveling support comprises two groups of traveling wheels which are symmetrical and spaced apart along the axial direction of the central water pipe (1), each group of traveling wheels comprises a plurality of supporting uprights and a plurality of guide wheels (21) which correspond to the supporting uprights one by one, the plurality of supporting uprights being evenly distributed along the circumferential direction of the segmented shell (5) located in the middle section of the guide shell, each supporting upright is fixedly connected to the corresponding segmented shell (5) and laterally extended out of the corresponding segmented shell (5), each guide wheel (21) is axially connected to the extended end of the corresponding supporting upright, and the axial direction of each guide wheel (21) is perpendicular to the axial direction of the central water pipe (1).

5. A pipeline desilting device for smart city construction according to claim 4, characterized in that: Each support riser includes: The supporting shell (22) is rectangular, extends transversely outside the corresponding segmented shell (5) and is fixedly connected to the segmented shell (5), and one end of the supporting shell (22) facing outward is an open structure; A plurality of No. 2 springs (23) whose length direction is consistent with the support shell (22), the plurality of No. 2 springs (23) are distributed in a horizontal row in the support shell (22), and one end of each No. 2 spring (23) is in conflict with the bottom wall in the support shell (22); A movable arm (24) is movably arranged in the supporting shell (22), and a rectangular receiving groove (25) for covering a plurality of No. 2 springs (23) is opened inwardly at one end of the movable arm (24) facing the supporting shell (22), the other end of each No. 2 spring (23) is in conflict with the bottom of the rectangular receiving groove (25), and the other end of the movable arm (24) is extended out of the supporting shell (22); Wherein, each guide wheel (21) is axially connected to the outgoing end of the movable arm (24).

6. A pipeline desilting device for smart city construction according to claim 1, characterized in that: An auxiliary flushing tail sleeve (26) is provided on the extended end of the central water pipe (1). The auxiliary flushing tail sleeve (26) is annular and coaxially sleeved on the extended end of the central water pipe (1). A plurality of water spray channels (20) in a circular array are provided in the auxiliary flushing tail sleeve (26). One end of each water spray channel (20) passes through the auxiliary flushing tail sleeve (26) toward one side of the water inlet (2). The other end of each water spray channel (20) is inclined toward the center of the central water pipe (1) and is connected to the central water pipe (1) after passing through the auxiliary flushing tail sleeve (26).

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