Underground pipeline blockage dredging device driven by high-pressure water

Abstract

The invention belongs to the field of municipal pipeline maintenance, and discloses a high-pressure water-driven underground pipeline blockage dredging device which obviously improves the energy conversion capacity from medium flow kinetic energy to mechanical rotation kinetic energy, is easier to achieve the obstacle removal expectation, and comprises a pivot main body, a rotation driving assembly and an obstacle removal assembly which are sequentially coupled along a straight line, the pivot main body is provided with a pivot cavity, the pivot cavity is communicated with an external high-pressure water pump, the driving assembly is arranged on the pivot main body and comprises an impeller cavity, a driving impeller and a water inlet hose, a drainage channel is formed in the impeller cavity, and the pivot cavity, the water inlet hose, the drainage channel and the impeller cavity are sequentially communicated; the obstacle removing assembly is arranged on the rotation driving assembly and used for removing blockages of the underground pipeline, the extending direction of the drainage channel is perpendicular to the extending direction of wheel blades of the rotation driving impeller, and the rotation driving impeller is provided with an impeller output shaft rotationally coupled with the obstacle removing assembly.

Description

Technical Field

[0001] The invention belongs to the field of municipal pipeline maintenance, and in particular relates to an underground pipeline blockage dredging device driven by high-pressure water. Background Art

[0002] Underground pipes are important carriers of urban drainage and sewage, and are important infrastructure of the city. Whether the drainage pipes are unobstructed directly affects the normal operation of the urban drainage and sewage system. Since domestic, construction and industrial waste are inevitably discharged into underground pipes, they are prone to precipitation and consolidation. For example, oil, waste residue and other food waste generated by daily diet, packaging waste generated by daily life, and construction waste generated during decoration and construction, etc. These three types of waste are the main causes of underground pipe blockage. The garbage formed by the first two (food waste, packaging waste) is soft in texture, and the last one (construction waste) will form a hard blockage due to the hardening of cement slurry and sand and gravel.

[0003] At present, with the rapid development of the economy, urban buildings and roads are becoming more and more dense, and underground pipelines are crisscrossed. Most of the pipelines are under various buildings and roads, which makes excavation inconvenient, and the pipe diameters are large and small. Therefore, no matter what kind of blockage occurs, it is very difficult to dredge it manually. Moreover, some small underground pipelines cannot be entered manually for dredging. Therefore, the use of a device with a dredging function for automatic dredging is an urgent problem that needs to be solved in the current municipal pipeline maintenance.

[0004] In view of this, there are now technologies for unblocking underground pipelines, such as: China's invention patent application "Pipeline obstacle-clearing robot, pipeline obstacle-clearing equipment and drainage pipeline defect detection method" (publication number: CN117006349A) discloses a pipeline obstacle-clearing robot, which mainly includes a pipeline obstacle-clearing robot and an image and control system, wherein the pipeline obstacle-clearing robot is mainly composed of a swingable mechanical arm unit with an obstacle-clearing head and a driving unit, and the robot is driven by a motor. Although this invention has a more flexible movement ability; China's invention patent application "High-pressure hydraulic driven micro-pipeline dredging and obstacle-clearing device" (publication number: CN118455213A) discloses a micro-pipeline dredging and obstacle-clearing device, which involves the field of municipal construction. The micro-pipeline dredging device includes a high-pressure water pump, the tail of the high-pressure water pump is provided with a plurality of drainage holes for driving the device, the output end of the high-pressure water pump is connected and installed with a pressurizing pipe; the outer end of the pressurizing pipe is provided with a power chamber, and the inside of the power chamber is provided with a plurality of high-pressure nozzles of equal arc; the front end of the pressurizing pipe is sealed and installed with a protective pipe, the inside of the protective pipe is provided with a rotating shaft, the end of the rotating shaft is provided with a power stirring plate, the power stirring plate is located at the end of the protective pipe, and the power stirring plate is used in conjunction with the high-pressure nozzle. The water is pressurized by the installed high-pressure water pump, and the high-pressure nozzle outside the pressurizing pipe is used to spray high-pressure water to impact the power stirring plate to ensure the high-speed operation of the special drill bit, and the high-pressure water pump can also spray high-pressure water to the drainage hole provided at the tail of the high-pressure water pump, so that the device obtains thrust, and ensures the overall advancement and obstacle removal of the device; the Chinese utility model patent "a device for dredging the internal dredging of a consolidation pipeline" (publication number: CN209703678U) discloses a dredging device that can dredge the consolidation obstacles in the pipeline, which involves the field of municipal construction. The internal dredging device for a consolidation pipeline includes a dredging rotary head, the interior of the drill bit is hollow, one end of the drill bit is provided with an obstacle clearing device, the other end of the dredging drill bit is connected to a high-pressure driving device, the high-pressure driving device is provided with a mixture adsorption device, and the obstacle clearing device includes a conical high-pressure nozzle, a spray gun mouth and obstacle clearing convex teeth. The spray gun mouth is opened at the right center of the conical high-pressure nozzle, and the spray gun mouth penetrates to the left side of the conical high-pressure nozzle. The end of the dredging drill bit is located outside the high-pressure nozzle and is embedded with the obstacle clearing convex teeth. The internal dredging device for a consolidation pipeline can perform water flow impact and drilling cleaning operations on the sediment consolidated inside the sewage pipe through the use of the obstacle clearing convex teeth in conjunction with the conical high-pressure nozzle during the rotation of the dredging drill bit, and can effectively clean and dredge the dry and consolidated dirt in the urban sewage pipe.

[0005] However, although the above-mentioned embodiments can clear underground pipe blockages with softer texture, they are insufficient in clearing hard blockages. For example, since Comparative Document 1 is driven by a motor, the obstacle clearing head will generate a torque opposite to the direction of movement when rotating to clear obstacles. The reverse torque will cause the entire device to have a tendency to rotate in the opposite direction relative to the pipe. Therefore, when the robot obstacle clearing head is used to clear hard blockages, the robot will spin in the pipe, thereby failing to achieve the expected obstacle removal. Comparative Document 2 pressurizes the high-pressure water flow through a turbine and forms a reverse thrust water flow. Since the special drill bit of the cutter head is not disclosed, it is impossible to obtain the specific structure and implementation of clearing hard blockages from the scheme. The drill bit of Comparative Document 3 is driven by the turbine when rotating, and the turbine pressurizes the high-pressure water flow again and converts the medium energy and mechanical energy. When the medium kinetic energy is converted into mechanical kinetic energy, the kinetic energy of the high-pressure water flow is consumed greatly, that is, the energy conversion efficiency is low. Therefore, the drill bit's ability to cut blockages is limited, that is, when clearing hard blockages, the expected obstacle removal is often not achieved.

[0006] In summary, the obstacle clearing capabilities of currently available underground pipe blockage clearing devices are subject to certain limitations due to the problem of energy conversion capacity, making it difficult to achieve the expected obstacle removal results. Summary of the invention

[0007] In view of the shortcomings of the prior art, the present invention provides a high-pressure water-driven underground pipe blockage clearing device, which significantly improves the energy conversion capacity of the medium flow kinetic energy into mechanical rotational kinetic energy, making it easier to achieve the expected obstacle removal.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A high-pressure water-driven underground pipeline blockage dredging device is arranged in an underground pipeline, characterized in that it comprises: a central body, a driving and rotating assembly and an obstacle clearing assembly coupled in sequence along a straight line, the central body having a central chamber, the central chamber being communicated with an external high-pressure water pump, the driving and rotating assembly comprising an assembly base, a driving and rotating impeller and a water inlet hose, the assembly base being arranged on the central body, the assembly base being formed with an impeller chamber and a drainage channel, the driving and rotating impeller being rotatably arranged in the impeller chamber, and the rotation axis of the driving and rotating impeller being parallel to the extension direction of the underground pipeline The impeller chamber is opened to the outside of the component base through the drainage channel, and the central chamber, the water inlet hose, the drainage channel and the impeller chamber are connected in sequence. The obstacle clearing component is arranged on the driving component to clear the blockages in the underground pipeline, wherein the extension direction of the drainage channel is perpendicular to the extension direction of the blades of the driving impeller, and the end cover on one side of the driving impeller close to the obstacle clearing component is used as the front end cover, and the front end cover is formed with an impeller output shaft extending out of the component base and rotationally coupled with the obstacle clearing component, and the impeller output shaft is coaxial with the rotation axis of the driving impeller.

[0010] Preferably, the driving impeller is a closed impeller, the front end cover of the driving impeller is provided with a front through hole, the component base is provided with a front water hole correspondingly connected to the front through hole, and the front water hole faces the obstacle clearing component.

[0011] Furthermore, the obstacle removal assembly comprises a structural destruction drill bit and a blocking milling disc respectively connected to the impeller output shaft coaxially, and the structural destruction drill bit is further away from the driving assembly than the blocking milling disc.

[0012] Furthermore, the free end of the impeller output shaft has an external thread, the end face of the impeller output shaft has an internal threaded hole, the blocking milling disc is threadedly connected to the external thread, the structural destruction drill bit is threadedly connected to the internal threaded hole, and the base cover plate of the component base facing the obstacle removal component is removable.

[0013] Furthermore, the blocked milling disc has a hollow in the disc and a milling end face facing the structure-destroying drill bit, the front water hole is open to the milling end face through the hollow in the disc, and the milling end face is formed with multiple groups of vertically protruding milling cutter parts, and each group of milling cutter parts is evenly distributed along the axis of the blocked milling disc, and the extension direction of the blade end of each milling cutter part and the rotation radial angle of the blocked milling disc are 45° to 60°.

[0014] Furthermore, the multiple groups of milling cutter parts are peripheral milling cutter groups and central milling cutter groups. The blocked milling disc has an end face outer edge portion and an end face proximal axis portion formed along the rotation radial direction, so that the milling end face forms a step away from the driving component. The peripheral milling cutter group is arranged on the end face outer edge portion, and the central milling cutter group is arranged on the end face proximal axis portion. The thickness of the end face proximal axis portion is 1.5 to 2 times the thickness of the end face outer edge portion.

[0015] Furthermore, the present invention also includes a plurality of flexible silt removal components, which are evenly distributed on the circumference of the blocked milling disc. The flexible silt removal components include a flexible chain and a scraper. One end of the flexible chain is arranged on the circumference of the blocked milling disc, and the scraper is arranged on the other end. The blade of the scraper faces the pipe wall of the underground pipeline. When the blocked milling disc rotates, the flexible chain is swung and rotated, thereby driving the scrapers of the plurality of flexible silt removal components to rotate in a circle.

[0016] Furthermore, the structural destruction drill bit is a scraper drill bit, and a dividing edge groove is formed on the tip of the structural destruction drill bit, and the structural destruction drill bit forms a plurality of tips through the dividing edge groove.

[0017] Further, the central body is formed with a propulsion channel communicating with the central chamber, and the propulsion channel has a first propulsion port on the end surface of the central body away from the driving assembly.

[0018] Furthermore, the other side end cover of the driving impeller opposite to the front end cover is used as the rear end cover, the rear end cover is provided with a rear through hole, the component base is provided with a rear water hole corresponding to the rear through hole, the central body is also provided with an enlarged end flange, the central body is coupled to the driving component through the enlarged end flange, the end enlarged flange is provided with a second propulsion channel connected with the rear water hole, and the second propulsion channel is provided with a second propulsion port on the end face of the enlarged end flange away from the driving component.

[0019] Furthermore, the driving component also includes a fixed base plate, the component base is threadedly connected to the enlarged flange at the end through the fixed base plate, and a through hole connected to the rear water hole is formed on the fixed base plate.

[0020] Furthermore, the present invention also includes at least three moving components, which include a moving base plate, a moving roller group and a connecting plate. The moving base plate has a moving outer portion and a moving inner portion which are relative to each other and extend in the same direction along the extension direction of the underground pipeline. The moving roller group is arranged on the moving outer portion. The surface of the central body has a plurality of mounting wings extending radially along the underground pipeline, and the moving inner portion is connected to the mounting wings through the connecting plate.

[0021] Furthermore, the movable inner part is formed with a connecting sub-part protruding and extending radially along the underground pipeline, the connecting sub-part has an inner connecting hole arranged axially along the underground pipeline, and the connecting plate has multiple groups of connecting holes on the plate distributed radially along the underground pipeline. The inner connecting holes are selectively fixed to the multiple groups of connecting holes on the plate, so that the moving roller groups of the multiple moving components are in corresponding rolling contact with the pipe walls of underground pipelines of various specifications.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Because the high-pressure water-driven underground pipeline blockage dredging device of the present invention includes a central body, a driving and rotating component and an obstacle clearing component coupled in sequence along a straight line, the central body has a central chamber, the central chamber is connected to an external high-pressure water pump, the driving and rotating component is arranged on the central body, the driving and rotating component includes an impeller chamber, a driving and rotating impeller and a water inlet hose, the impeller chamber is formed with a drainage channel, the central chamber, the water inlet hose, the drainage channel and the impeller chamber are connected in sequence, the obstacle clearing component is arranged on the driving and rotating component, and is used to clear blockages in underground pipelines, the extension direction of the drainage channel is perpendicular to the extension direction of the blades of the driving and rotating impeller, the driving and rotating impeller has an impeller output shaft rotationally coupled with the obstacle clearing component, that is, the high-pressure water flows into the impeller chamber through the channel and vertically impacts the driving and rotating impeller, so that the driving and rotating impeller obtains the maximum driving torque, that is, the energy conversion capacity of the medium flow kinetic energy to the mechanical rotational kinetic energy is maximized, therefore, the present invention significantly improves the energy conversion capacity of the medium flow kinetic energy to the mechanical rotational kinetic energy, and is easier to achieve the expected obstacle removal.

[0024] 2. Because the driving impeller of the present invention is a closed impeller, the front end cover of the driving impeller has a front through hole, the component base has a front water hole corresponding to the front through hole, and the front water hole faces the obstacle clearing component, that is, after impacting the blades of the driving impeller, the high-pressure water that consumes part of the energy passes through the front water hole and flows over the surface of the obstacle clearing component. Therefore, the present invention reuses the high-pressure water after consuming the energy, so as not only to flush and remove the blockages or impurities attached to the surface of the obstacle clearing component, but also to appropriately cool down the obstacle clearing component that has heated up due to clearing the blockage, thereby providing the obstacle clearing capability of the obstacle clearing component and significantly extending the service life of the obstacle clearing component.

[0025] 3. Because the obstacle clearing component of the present invention includes a structural destruction drill bit and a blockage milling disc coaxially connected to the impeller output shaft respectively, and the structural destruction drill bit is farther away from the driving component than the blockage milling disc, the blockage is basically an integral structure formed by the consolidation of various garbage. The overall structure first has a strong overall structural force formed due to long-term solid connection. Therefore, the present invention first drills a through hole on the integral blockage through the structural destruction drill bit to destroy its overall structural force, and then uses the blockage milling disc to mill and clear the residual blockage that has lost its overall structural force. The structural destruction drill bit and the blockage milling disc are respectively coupled with the impeller output shaft for rotation, so that the rotations of the two are independent and will not affect each other. In particular, the spiral direction of the threads of the two is set in the same direction as the rotation direction of the output shaft, which will make the structural destruction drill bit and the blockage milling disc more and more tightly coupled with the output shaft during the milling operation, so that they are not easy to loosen and fall off.

[0026] 4. Because the blocking milling disc of the present invention has a hollow disk and a milling end face facing the structure-destroying drill bit, the front water hole is open to the milling end face through the hollow disk, and the milling end face is formed with multiple groups of vertically protruding milling cutter parts, and each group of milling cutter parts is evenly distributed along the axis of the blocking milling disc, and the extension direction of the blade end of each milling cutter part is at an angle of 45° to 60° with the rotation radial direction of the blocking milling disc. Therefore, the hollow disk of the present invention allows water to flow through the front water hole to clean the milling cutter part and the structure-destroying drill bit, while also making the milling disc lightweight, and the setting of 45° to 60° makes the milling efficiency of the blockage higher.

[0027] 5. Because the multiple groups of milling cutter parts of the present invention are peripheral milling cutter groups and central milling cutter groups, the blockage milling disc has an end face outer edge portion and an end face proximal axis portion formed along the rotation radial direction, so that the milling end face forms a step away from the driving component, the peripheral milling cutter group is arranged at the end face outer edge portion, and the central milling cutter group is arranged at the end face proximal axis portion, and the thickness of the end face proximal axis portion is 1.5 to 2 times the thickness of the end face outer edge portion. When a through hole is drilled out of the blockage, since the central milling cutter group is farther away from the driving component than the peripheral milling cutter, that is, the central milling cutter group contacts the blockage of the underground pipeline first than the peripheral milling cutter group, and mills the vicinity of the drilled through hole through the proximal axis center milling cutter group to form a hole expansion effect. When the through hole is expanded to the vicinity of the peripheral milling cutter group, the central milling cutter group passes through the through hole, and the peripheral milling cutter group thoroughly removes the remaining blockage near the expanded through hole. Therefore, the present invention can more easily remove the blockage through layered planing and milling, and can also remove the blockage more thoroughly.

[0028] 6. Because the present invention also includes multiple flexible silt removal components, the flexible silt removal components include a flexible chain and a scraper, one end of the flexible chain is arranged on the circumferential surface of the blocked milling disc, and the scraper is arranged on the other end, and the blade of the scraper faces the pipe wall of the underground pipeline. When the blocked milling disc rotates, the flexible chain is swung and rotated, thereby driving the scrapers of the multiple flexible silt removal components to rotate in a circle. Therefore, the present invention enables the setting of the flexible silt removal component by replacing the blocked milling disc, and the flexible silt removal component has an excellent dredging effect on soft blockages formed by various fibrous objects, rod-shaped objects and various irregular small objects.

[0029] 7. Because the structural destruction drill bit of the present invention is a scraper drill bit, and the tip of the structural destruction drill bit is formed with a dividing blade groove, and the structural destruction drill bit forms multiple tips through the dividing blade groove, the cement block-like hard blockages in the construction waste are characterized by high hardness and high brittleness, and the multi-pointed structural destruction drill bit can form multiple heads for drilling and milling of the cement-like hard blockages. Therefore, the structural destruction drill bit of the present invention formed multiple tips through the dividing blade groove can better target the hard solidified blockages formed by construction waste, and perform a dredging process of first crushing and then clearing the obstacles, thereby having greater destructive power and crushing efficiency on the hard solidified blockages.

[0030] 8. Because the central body of the present invention is formed with a propulsion channel connected to the central chamber, the propulsion channel has a first propulsion port on the end face of the central body. The assembly base has a rear water hole, and the central body also has an enlarged end flange. The central body is coupled to the drive assembly through the enlarged end flange. The enlarged end flange has a second propulsion channel connected to the rear water hole, and the second propulsion channel has a second propulsion port on the end face of the enlarged end flange. Therefore, the present invention performs double propulsion in the opposite direction of the drilling / milling of the present invention through the first propulsion port and the second propulsion port, respectively, so that the present invention can obtain a greater propulsion force, so that the present invention can withstand the greater force applied to the invention itself when the blockage is drilled / milled, and the present invention also uses the larger enlarged end flange as the fixed base surface of the drive assembly, which is more conducive to the realization of the above-mentioned effect.

[0031] 9. Because the present invention also includes at least three moving components, the moving components include a moving base plate, a moving roller group and a connecting plate, the moving base plate has a moving outer part and a moving inner part, the moving roller group is arranged on the moving outer part, the surface of the central body has a plurality of mounting wings extending along the radial direction of the underground pipeline, and the moving inner part is connected to the mounting wings through the connecting plate. In particular, when the moving base plate is designed to be an ice skate-like structure, the flexibility of the present invention in moving in the underground pipeline can be further enhanced. Therefore, the moving component of the present invention has a simple structure and is easy to set up, and the present invention can be stably positioned in the underground pipeline through the length setting.

[0032] 10. Because the movable inner part of the present invention is formed with a connecting sub-part protruding along the radial extension of the underground pipeline, the connecting sub-part has an inner connecting hole arranged along the axial direction of the underground pipeline, and the connecting plate has multiple groups of connecting holes on the plate distributed radially along the underground pipeline, and the inner connecting holes are selectively fixed to the multiple groups of connecting holes on the plate, so that the moving roller groups of multiple moving components can roll in contact with the pipe walls of underground pipelines of various specifications. Since the underground pipelines planned by the municipal government have various predetermined pipe diameters, the present invention can position the present invention in underground pipelines of various different predetermined pipe diameters by selectively fixing the inner connecting holes to the multiple groups of connecting holes on the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of an underground pipeline blockage dredging device driven by high-pressure water according to Embodiment 1 of the present invention;

[0034] Figure 2 for Figure 1 Exploded diagram of

[0035] Figure 3 It is a schematic diagram of the central body of the first embodiment of the present invention;

[0036] Figure 4 for Figure 3 Rotated cross-sectional view of

[0037] Figure 5 is a schematic diagram of a mobile assembly according to Embodiment 1 of the present invention;

[0038] Figure 6 An exploded view of the driving assembly of the first embodiment of the present invention;

[0039] Figure 7 Schematic diagram of a structural destruction drill bit according to the first embodiment of the present invention Figure 1 ;

[0040] Figure 8 Schematic diagram of a structural destruction drill bit according to the first embodiment of the present invention Figure 2 ;

[0041] Fig. 9 It is a schematic diagram of a blocked milling disc according to the first embodiment of the present invention;

[0042] Fig.10 It is a schematic diagram of a blocked milling disc according to the second embodiment of the present invention;

[0043] FIG. 11( a ) is a schematic diagram of the implementation of the flexible silt removal assembly of the second embodiment of the present invention. Figure 1 ;

[0044] FIG. 11( b ) is a schematic diagram of the implementation of the flexible silt removal assembly of the second embodiment of the present invention. Figure 2 ;

[0045] FIG. 11( c ) is a schematic diagram of the implementation of the flexible silt removal assembly of the second embodiment of the present invention. Figure 3 .

[0046] In the figure: 100, underground pipeline blockage dredging device driven by high-pressure water, P, high-pressure water pump, T, monitoring terminal, 10, central body, 10a, central chamber, J, high-pressure water pipe joint, 10b, propulsion channel, 10c, first propulsion port, 10d, water outlet channel, 10e, water outlet, 11, mounting wing, 11a, matching through hole, 12, end enlarged flange, 12a, second propulsion port, 20, moving component, 21, moving base plate, 21a, moving outer part, 21b, moving inner part, 211a, connecting sub-part, 211b, inner connecting hole, 22, moving roller group, 23, connecting plate, 23a, connecting hole on plate, 30, driving component, 31, fixed base plate, 31a, base plate through hole, 32, component base, 321, base cover plate, 3 21a, front water hole, 322, base body, 322a, impeller chamber, 322b, drainage channel, 33, driving impeller, 331, front cover, 331a, front through hole, 3311, impeller output shaft, 332, rear cover, 332a, rear through hole, 34, water inlet hose, 40, obstacle removal component, 41, structure destruction drill bit, 41a, dividing blade groove, 411, plug-in handle, 42, blocked milling disc (embodiment one), 42A, hollow in the disc, 42a, outer edge of the end face, 42b, proximal axis of the end face, 42c, milling end face, 421, center milling cutter group, 422, peripheral milling cutter group, 42', blocked milling disc (embodiment two), 421' end fixing ear, 50, flexible silt removal component, 51, flexible chain, 52, scraper, 60, camera. DETAILED DESCRIPTION

[0047] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following examples and drawings specifically illustrate the high-pressure water-driven underground pipe blockage clearing device of the present invention. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0048] <Example 1>

[0049] like Figure 1 and Figure 2 As shown, the underground pipe blockage clearing device 100 driven by high-pressure water in this embodiment is arranged in an underground pipe (not shown in the drawings). Specifically, the underground pipe blockage clearing device 100 is placed at the end of the pipe to be cleared by a suspended movement, and the underground pipe blockage clearing device 100 is connected to a high-pressure water pump P located outside the underground pipe through a high-pressure water pipe (not shown in the drawings). At the same time, the underground pipe blockage clearing device 100 has a camera 60, which is used to collect the conditions in the underground pipe (including blockage conditions and environmental conditions) in real time. The camera 60 is signal-connected to the monitoring terminal T located outside the underground pipe.

[0050] The pressurized water-driven underground pipeline blockage clearing device 100 includes a central body 10 , a moving component 20 , a driving component 30 , an obstacle clearing component 40 and a camera 60 .

[0051] The central body 10, the driving and rotating assembly 20 and the obstacle clearing assembly 30 are coupled in sequence along a straight line. The moving assembly 20 is arranged on the circumferential surface of the central body 10. The moving assembly 20 is used to drive the central body 10, the driving and rotating assembly 20 and the obstacle clearing assembly 30 to move along the extension direction of the underground pipeline. Specifically, the central body 10, the driving and rotating assembly 20 and the obstacle clearing assembly 30 extend in the same direction as the underground pipeline.

[0052] like Figure 3 and Figure 4 As shown, the central body 10 is provided with a plurality of mounting fins 11 and an enlarged end flange 12 at both ends along its extension direction, and the plurality of mounting fins 11 are all extended radially along the underground pipeline. Specifically, the central body 10 extends in a cylindrical shape, and the plurality of mounting fins 11 are evenly distributed on the circumference of the central body 10.

[0053] The central body 10 has a central chamber 10a, which is connected to an external high-pressure water pump P. Specifically, the opening of the central chamber 10a is located on the end surface where the wing 11 is installed, and is connected to the high-pressure water pump P through a high-pressure water pipe joint J.

[0054] The central body 10 also forms a propulsion channel 10b connected to the central chamber 10a, and the propulsion channel 10b has a first propulsion port 10c on the end face of the central body 10. Specifically, the first propulsion port 10c and the open port of the central chamber 10a are located on the same end face, and there are multiple first propulsion ports 10c, which are distributed in a circular shape around the outside of the open port of the central chamber 10a.

[0055] The central body 10 is coupled to the driving assembly 30 through the enlarged end flange 12, and the enlarged end flange 12 has a second propulsion channel in the form of a through hole (not shown in the drawings). The second propulsion channel is located at the end face of the enlarged end flange away from the driving assembly 30 as a second propulsion port 12a. Specifically, the end face of the central body 10 where the first propulsion port 10c is located is away from the driving assembly 30.

[0056] like Figure 5 As shown, the number of the moving components 20 is at least three, and the moving components 20 include a moving base plate 21 , a moving roller set 22 and a connecting plate 23 .

[0057] The movable base 21 has a movable outer portion 21a and a movable inner portion 21b which are relative to each other and extend in the same direction along the extension direction of the underground pipeline. Specifically, the movable base 21 as a whole is shaped like an ice skate extending in the extension direction of the underground pipeline. This shape enables the movable base 21 to have better obstacle surmounting capability when moving relative to the wall of the underground pipeline (the wall of the underground pipeline is often uneven). The movable outer portion 21a corresponds to the blade side of the ice skate, and the movable inner portion 21b corresponds to the other side of the ice skate.

[0058] The movable roller group 22 is arranged on the movable outer side 21a. Specifically, the movable roller group 22 includes at least two movable rollers evenly distributed along the axial direction of the underground pipeline, and the two movable rollers located at both ends of the distribution direction of the movable roller group 22 correspond to the starting ends close to the ice skate arc respectively.

[0059] The movable inner portion 21b is formed with a connecting sub-portion 211a extending and protruding along the radial direction of the underground pipeline. The connecting sub-portion 211a has an inner connecting hole 211b arranged axially along the underground pipeline. Specifically, the number of the inner connecting holes 211b is at least one group, and each group has a plurality of inner connecting holes 211b arranged axially along the underground pipeline.

[0060] The connecting plate 23 has multiple groups of connecting holes 23a on the plate distributed radially along the underground pipeline. The movable inner part 21b is threadedly connected with the mounting wing 11 through the connecting plate 23. Specifically, the inner connecting holes 211b are selectively threadedly fixed with the multiple groups of connecting holes 23a on the plate, so that the moving roller groups 22 of the multiple moving components 20 are in corresponding rolling contact with the pipe walls of underground pipelines of various specifications. Since the underground pipelines planned by the municipal government are required to have several fixed pipe diameter specifications, by selecting different connecting holes 23a on the plate to be arranged to be threaded with the mounting wing 11, the distance between the moving roller group 22 and the central body 10 can be adjusted, so that the moving roller group 22 can be matched with the pipe diameters of underground pipelines of different specifications. Moreover, by designing the relative position of the connecting sub-part 211a to the movable inner part 21b, the center of gravity position of the underground pipeline blockage dredging device 100 driven by high-pressure water can be conveniently adjusted, so that the movement of the underground pipeline blockage dredging device 100 driven by high-pressure water in the underground pipeline is more stable.

[0061] like Figure 6 As shown, the driving assembly 30 includes a fixed base plate 31 , an assembly base 32 , a driving impeller 33 and a water inlet hose 34 .

[0062] The component base 32 is threadedly connected to the end enlarged flange 12 through the fixed base plate 31, and the base cover 321 of the component base 32 facing the obstacle removal component 40 is detachable. Specifically, the component base 32 includes a base cover 321 and a base body 322.

[0063] The assembly base 32 is formed with an impeller chamber 322a and a drainage channel 322b.

[0064] Specifically, the impeller chamber 322 a is a cavity formed on the base body 322 and open on one side toward the obstacle removal assembly 40 , and the impeller chamber 322 a is closed by the base cover plate 321 .

[0065] The impeller chamber 322a is open to the outside of the component base 32 through the drainage channel 322b, and the central chamber 10a, the water inlet hose 34, the drainage channel 322b and the impeller chamber 322a are connected in sequence. Specifically, there are multiple drainage channels 322b, which are evenly formed on the peripheral surface of the component base 32. After the high-pressure water pump P injects high-pressure water into the central chamber 10a, a part of the high-pressure water is ejected through the first propulsion port 10c to form a reverse thrust, and the rest of the high-pressure water enters the impeller chamber 322a through the water inlet hose 34 and the drainage channel 322b.

[0066] The driving impeller 33 is rotatably arranged inside the impeller chamber 322a. The driving impeller 33 is a closed impeller, and the rotation axis of the driving impeller 33 is the same as the extension direction of the underground pipeline. The extension direction of the drainage channel 322b is perpendicular to the extension direction of the blades of the driving impeller 33. Specifically, the high-pressure water flow entering the impeller chamber 322a impacts the driving impeller 33 to rotate. In the present embodiment, the rotation speed of the driving impeller is 500 to 1000 rpm, corresponding to a rotational torque of 50 to 100 Nm.

[0067] The impeller 33 has a front cover 331 facing the obstacle removal assembly 40 and a rear cover 332 facing the central body 10 .

[0068] The front end cover 331 has a front through hole 331 a and an impeller output shaft 3311 , and the rear end cover 332 has a rear through hole 332 a .

[0069] Specifically, the base cover plate 321 is formed with a front water hole 321a facing the obstacle clearing component 40, the end face of the base body 322 is formed with a rear water hole facing the central body 10 (not shown in the drawings), and a base through hole 31a is formed on the fixed base 31, the front through hole 331a and the front water hole 321a are correspondingly connected, opening the impeller cavity of the driving impeller 33 toward the obstacle clearing component 40; the rear through hole 332a, the rear water hole, the base through hole 31a and the second propulsion channel are correspondingly connected in sequence.

[0070] Specifically, after the high-pressure water flow entering the impeller chamber 322a impacts the driving impeller 33, it flows out of the driving impeller 33 through the front through hole 331a and the rear through hole 332a, that is, a part of it flows to the obstacle clearing component 40 through the front through hole 331a and the front water hole 321a, and the rest is ejected outward through the rear through hole 332a, the rear water hole, the base plate through hole 31a and the second propulsion channel, and together with the high-pressure water flow ejected from the first propulsion port 10c, forms a double reverse thrust propulsion force for the underground pipe blockage clearing device 100 driven by high-pressure water. In this embodiment, the double reverse thrust propulsion force ranges from 300 to 500 Newtons.

[0071] The impeller output shaft 3311 extends out of the component base 32 and is rotationally coupled with the obstacle clearing component 40, and the impeller output shaft 3311 is coaxial with the rotation axis of the driving impeller 33, the free end of the impeller output shaft 3311 has an external thread (not shown in the drawings), and the end face of the free end of the impeller output shaft 3311 has an internal threaded hole (not shown in the drawings).

[0072] The obstacle clearing component 40 is arranged on the driving component 30 and is used to clear blockages in underground pipelines. The obstacle clearing component 40 includes a structural destruction drill bit 41 and a blockage milling disc 42 which are coaxially connected to the impeller output shaft 311 respectively, and the structural destruction drill bit 41 is farther away from the driving component 30 than the blockage milling disc 42.

[0073] The blocking milling disc 42 is threadedly connected to the external thread of the free end of the impeller output shaft 3311 through a threaded through hole in its center (not shown in the drawings), and the structural destruction drill bit 41 is threadedly connected to the internal threaded hole on the end face of the free end of the impeller output shaft 3311 through the plug-in handle 411. Specifically, the driving direction of the impeller output shaft 3311 for the blocking milling disc 42 and the structural destruction drill bit 41 is consistent with the tightening direction of the external thread and the internal thread hole.

[0074] like Figure 7 and Figure 8 As shown, the structure-destroying drill bit 41 is a scraper drill bit, and a dividing edge groove 41a is formed at the tip of the structure-destroying drill bit 41. The structure-destroying drill bit 41 forms multiple tips through the dividing edge groove 41a. Specifically, the multi-pointed structure-destroying drill bit 41 has a crushing effect on the blockage when it is fed and rotated relative to the blockage. In the present embodiment, the structure-destroying drill bit 41 has six serrated edges, thereby forming six cutting edges through the dividing edge groove 41a, and the six cutting edges are rotationally symmetrical.

[0075] like Fig. 9As shown, the blocked milling disc 42 has a hollow 42A in the disc and a milling end face 42c facing the structural destruction drill bit 41, and the front water hole 321a is open to the milling end face 42c through the hollow 42A in the disc, so that the flowing medium in the impeller chamber 322a can flow out to the obstacle clearing component 40, and at the same time, the tool on the milling end face 42c and the structural destruction drill bit 41 are flushed and cooled.

[0076] The milling end surface 42c is formed with multiple groups of vertically protruding milling cutter parts, and each group of milling cutter parts is evenly distributed along the axis of the blocked milling disc 42, and the extension direction of the blade end of each milling cutter part and the rotation radial angle of the blocked milling disc are 45° to 60°.

[0077] The multiple groups of milling cutter parts are a peripheral milling cutter group 422 and a central milling cutter group 421. The blockage milling disc 42 has an end face outer edge portion 42a and an end face proximal axis portion 42b formed along the rotation radial direction. The thickness of the end face proximal axis portion 42b is 1.5 to 2 times the thickness of the end face outer edge portion 42a, so that the milling end face 42c forms a step away from the driving component 30. The peripheral milling cutter group 422 is arranged on the end face outer edge portion 42a, and the central milling cutter group 421 is arranged on the end face proximal axis portion 42b, that is, when the obstacle clearing component 40 moves toward the blockage in the underground pipeline, the central milling cutter group 421 contacts the blockage earlier than the peripheral milling cutter group 422 and performs milling and obstacle clearing.

[0078] Specifically, the end surface outer edge portion 42a is a circular ring-shaped entity, and the end surface proximal axis portion 42b is a cross-shaped entity. The two can be formed as one piece, or can be set in a separable and detachable form.

[0079] In this embodiment, the camera 60 is disposed on the peripheral surface of the component base 32 to collect image data along the forward direction of the underground pipe blockage clearing device 100 driven by high-pressure water.

[0080] The working process of the underground pipe blockage dredging device 100 driven by high-pressure water is described below in conjunction with an embodiment:

[0081] First, the operator places the underground pipe blockage dredging device 100 driven by high-pressure water at the end of the underground pipe to be dredged by suspending according to the warranty; then, the high-pressure water pump P and the monitoring terminal T are started, and the underground pipe blockage dredging device 100 driven by high-pressure water forms a double push through the first propulsion port 10c and the second propulsion port 12a, and begins to move along the underground pipe, and at the same time, the monitoring terminal T begins to display the image of the underground pipe in the dredging direction, and then, when the blockage is to be dredged, a through hole is first drilled in the blockage by the structure-destroying drill bit 41, and then, the center milling cutter group 421 mills the vicinity of the drilled through hole, thereby expanding the through hole, and then, after the center milling cutter group 421 passes through the expanded through hole, the peripheral milling cutter group 422 further mills and removes the remaining blockage after the expansion.

[0082] Specifically, the first embodiment is particularly suitable for effectively removing hard blockages such as sediment consolidation / compaction.

[0083] <Example 2>

[0084] In the second embodiment, the same symbols are given to the same structures as those in the first embodiment, and the same descriptions are omitted. The difference with respect to the first embodiment is that:

[0085] like Fig.10 As shown, the blocking milling disc 42' in this embodiment includes an end fixing ear 421'. Specifically, the blocking milling disc 42' and the blocking milling disc 42 are both optional components of the underground pipe blockage clearing device driven by high-pressure water, and the blocking milling disc 42' is connected to the external thread of the free end of the impeller output shaft 3311 through the threaded through hole in the middle of itself.

[0086] Specifically, the number of the end fixing ears 421 ′ is two, three or four, that is, the plugging milling disc 42 ′ has at least three specifications, as shown in FIG. 11( b ) and FIG. 11( c ).

[0087] As shown in FIG. 11( a ), the number of the flexible silt removal components 50 is multiple and evenly distributed on the circumference of the blocked milling disc 42 ′ along the axial direction of the blocked milling disc 42 ′. Specifically, the number of the flexible silt removal components 50 is two, three or four.

[0088] The flexible silt removal assembly 50 includes a flexible chain 51 and a scraping blade 52 .

[0089] One end of the flexible chain 51 is arranged on the end fixed ear 421' of the circumference of the plugging milling disc 42', and the other end is movably provided with a scraper 52, and the blade of the scraper 52 faces the pipe wall of the underground pipeline. When the plugging milling disc rotates, the flexible chain is swung and rotated, thereby driving the scrapers of multiple flexible silt removal components to rotate in a circle.

[0090] Specifically, the second embodiment is particularly suitable for effectively removing blockages such as woven fibers and tree branches.

[0091] The above-mentioned implementation modes are preferred cases of the present invention and are not used to limit the protection scope of the present invention. Various deformations or modifications that can be made by ordinary technicians in this field without creative work within the scope of the attached claims are still within the protection scope of this patent.

Claims

1. A high-pressure water-driven underground pipeline blockage dredging device, arranged in an underground pipeline, characterized in that: include: The central body, the driving assembly and the obstacle removal assembly are coupled in sequence along a straight line. The central body has a central chamber, which is connected to an external high-pressure water pump. The driving component includes a component base, a driving impeller and a water inlet hose. The component base is arranged on the central body, and is formed with an impeller chamber and a drainage channel. The driving impeller is rotatably arranged in the impeller chamber, and the rotation axis of the driving impeller is the same as the extension direction of the underground pipeline. The impeller chamber is open to the outside of the component base through the drainage channel, and the central chamber, the water inlet hose, the drainage channel and the impeller chamber are sequentially connected. The obstacle removal component is arranged on the driving component and is used to remove the obstruction of the underground pipeline. Among them, the extension direction of the drainage channel is perpendicular to the extension direction of the blades of the driving impeller, and the end cover on one side of the driving impeller close to the obstacle clearing component is used as the front end cover, and an impeller output shaft extending out of the component base and rotationally coupled with the obstacle clearing component is formed on the front end cover, and the impeller output shaft is coaxial with the rotation axis of the driving impeller.

2. The underground pipeline blockage dredging device driven by high-pressure water according to claim 1 is characterized in that: in, The driving impeller is a closed impeller, and a front end cover of the driving impeller is provided with a front through hole. The component base is provided with a front water hole correspondingly connected to the front through hole, and the front water hole faces the obstacle removal component.

3. The underground pipeline blockage dredging device driven by high-pressure water according to claim 2 is characterized in that: in, The obstacle removal assembly comprises a structural destruction drill bit and a jamming milling disc respectively connected to the impeller output shaft coaxially, and the structural destruction drill bit is further away from the driving assembly than the jamming milling disc.

4. The underground pipeline blockage dredging device driven by high-pressure water according to claim 3 is characterized in that: in, The free end of the impeller output shaft has an external thread, the end face of the impeller output shaft has an internal threaded hole, the blocking milling disc is threadedly connected to the external thread, the structural destruction drill bit is threadedly connected to the internal threaded hole, and the base cover plate of the component base facing the obstacle removal component is removable.

5. The underground pipeline blockage dredging device driven by high-pressure water according to claim 3 or 4, characterized in that: in, The blocking milling disc has a hollow in the disc and a milling end face facing the structure-destroying drill bit, and the front water hole is open to the milling end face through the hollow in the disc. The milling end surface is formed with multiple groups of vertically protruding milling cutter parts, and each group of milling cutter parts is evenly distributed along the axis of the blocked milling disc, and the extension direction of the blade end of each milling cutter part and the angle between the rotation radial direction of the blocked milling disc is 45° to 60°.

6. The underground pipeline blockage dredging device driven by high-pressure water according to claim 5, characterized in that: in, The plurality of milling cutter groups are a peripheral milling cutter group and a central milling cutter group. The blocking milling disc has an end face outer edge portion and an end face proximal axis portion formed along a rotating radial direction, so that the milling end face forms a step away from the driving assembly. The peripheral milling cutter group is arranged at the end face outer edge portion, and the central milling cutter group is arranged at the end face proximal axis portion. The thickness of the proximal portion of the end surface is 1.5 to 2 times the thickness of the outer edge portion of the end surface.

7. The underground pipeline blockage dredging device driven by high-pressure water according to claim 3 or 4, characterized in that: Also includes: Multiple flexible desilting components are evenly distributed on the circumference of the blocked milling disc. The flexible silt removal assembly comprises a flexible chain and a scraper. One end of the flexible chain is arranged on the peripheral surface of the blocking milling disc, and the other end is arranged with the scraper, and the blade of the scraper faces the pipe wall of the underground pipeline. When the blocked milling disc rotates, the flexible chain is swung and rotated, thereby driving the scraping knives of the multiple flexible desilting components to rotate in a circle.

8. The underground pipeline blockage dredging device driven by high-pressure water according to claim 3 is characterized by: in, The structural destruction drill bit is a scraper drill bit, and a dividing edge groove is formed on the tip of the structural destruction drill bit, and the structural destruction drill bit forms a plurality of tips through the dividing edge groove.

9. The underground pipeline blockage dredging device driven by high-pressure water according to claim 2, characterized in that: in, The central body is formed with a propulsion channel communicating with the central chamber, and the propulsion channel has a first propulsion port on an end surface of the central body away from the driving assembly.

10. The underground pipeline blockage dredging device driven by high-pressure water according to claim 9, characterized in that: in, The other end cover of the driving impeller opposite to the front end cover is used as the rear end cover, the rear end cover has a rear through hole, and the component base has a rear water hole corresponding to the rear through hole. The central body also has an enlarged end flange, and the central body is coupled to the drive assembly through the enlarged end flange. The enlarged end flange has a second propulsion channel connected to the rear water hole, and the second propulsion channel has a second propulsion port on the end face of the enlarged end flange away from the drive assembly.

11. The underground pipeline blockage dredging device driven by high-pressure water according to claim 10, characterized in that: in, The driving component also includes a fixed base plate, through which the component base is threadedly connected to the enlarged flange at the end, and a through hole connected to the rear water hole is formed on the fixed base plate.

12. The underground pipeline blockage dredging device driven by high-pressure water according to claim 2, characterized in that: Also includes: At least three moving components, the moving components include a moving base plate, a moving roller group and a connecting plate, the moving base plate has a moving outer side portion and a moving inner side portion which are opposite to each other and extend in the same direction along the extension direction of the underground pipeline, the moving roller group is arranged on the moving outer side portion, The surface of the central body has a plurality of mounting fins extending in the radial direction of the underground pipeline, and the movable inner part is connected with the mounting fins through the connecting plate.

13. The underground pipeline blockage dredging device driven by high-pressure water according to claim 12, characterized in that: in, The movable inner part is formed with a connecting sub-part extending and protruding along the radial direction of the underground pipeline, and the connecting sub-part has an inner connecting hole arranged along the axial direction of the underground pipeline. The connecting plate has multiple groups of connecting holes on the plate distributed radially along the underground pipeline. The inner connecting holes are selectively fixed to the multiple groups of connecting holes on the plate, so that the moving roller groups of the multiple moving components can make corresponding rolling contact with the pipe walls of underground pipelines of various specifications.

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