A pipeline inner wall cleaning device for pipeline repair by the interpenetration method

Abstract

This application relates to a pipeline inner wall cleaning device used for pipeline repair by the insertion method in the field of pipeline repair technology. It includes a housing. One end of the housing is provided with a towing rope. Two groups of distance adjustment mechanisms are arranged on the circumferential surface of the housing. A number of high-pressure nozzles are arranged on the circumferential surface of the housing. A water supply pipe communicating with all the high-pressure nozzles is arranged in the housing. The distance adjustment mechanisms are respectively located at both ends of the housing. The distance adjustment mechanism includes a number of support rods arranged on the outer circumferential surface of the housing. One end of the support rod is hinged to the housing. The other end of the support rod is rotatably connected with a support wheel. An auxiliary support rod is also arranged on each support rod. One end of the auxiliary support rod is connected with the support rod. The other end of the auxiliary support rod is hinged with a slider. External threads are provided on the outer circumferential surface of the housing. A clamping ring for restricting the sliding position of the slider is threadedly connected to the outer circumferential surface of the housing. This application has the effects of reducing the physical consumption of manual labor and improving the cleaning efficiency of the pipeline inner wall.

Description

Technical Field

[0001] The present application relates to the field of pipeline repair equipment, and particularly to a pipeline inner wall cleaning device used for pipeline repair by the insertion method. Background Art

[0002] The urban municipal pipe network system is an important part of urban infrastructure. With the continuous improvement of China's urbanization process, in recent years, the length of newly laid and renovated municipal pipe networks each year has exceeded 1 million kilometers. Transforming the existing urban pipe networks is an inevitable issue in the process of urban development. If the method of excavation and replacement is fully adopted during the renewal of urban underground pipe networks, not only will the huge expenses be involved, but also the resulting environmental problems, traffic problems and impacts on residents' lives will be quite significant. Adopting non-excavation means to solve the problems in pipe network renovation and reducing the negative impacts brought by pipe network renovation is a strong requirement for urban construction and modern social life. The non-excavation pipeline repair technology can regenerate the pipeline by using the original pipe position resources and installing a lining (new pipeline) in the existing pipeline by adopting relevant technologies without excavation or with less excavation (only excavating the working shaft), and the pipeline can regain a service life of 30 to 50 years.

[0003] The folded lining insertion method is to use an HDPE lining pipe with an outer diameter slightly larger than the inner diameter of the main pipeline. The HDPE pipe is deformed by a deformation device through multi-stage equal-diameter reduction or pressing into a "U" shape and then tied with a fiber tape to make its cross-section smaller than the inner cross-section of the main pipeline. The HDPE pipe is quickly inserted into the pipeline to be repaired by a tractor. Then, relying on the self-memory characteristics of the HDPE pipe or by increasing pressure and temperature, it is opened and restored to its original pipe diameter, so that the HDPE lining pipe rebounds and expands in diameter and adheres to the inner wall of the main pipeline in an interference state, closely adhering to the old pipeline wall, forming a composite structural material that combines the anti-corrosion performance and the mechanical performance of the pipeline to be repaired. Thus, the purpose of restoring the use function of the main pipeline and extending its service life is achieved.

[0004] This repair technology has relatively high requirements for the cleaning of the original pipeline. The original pipeline must be cleaned before the pipeline lining is repaired. Currently, the most widely used method is the high-pressure water flushing method. The existing high-pressure water flushing method mainly adds a high-pressure nozzle at one end of the water pipe. Through the water supply of the water pump, the high-pressure nozzle sprays high-speed water jets to wash the inner wall of the pipeline. However, the area sprayed by the high-pressure jet is limited, and the staff needs to constantly adjust the rotation of the water pipe to control the orientation of the high-pressure nozzle to achieve the purpose of cleaning the inner wall of the pipeline. This method will greatly consume the labor of the staff and cannot guarantee the cleaning efficiency of the inner wall of the pipeline. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the purpose of the present application is to provide a pipeline inner wall cleaning device for pipeline repair using the interlacing method, which has the advantages of reducing manual labor consumption and improving the cleaning efficiency of the pipeline inner wall.

[0006] The pipeline inner wall cleaning device used in the interpenetration pipeline repair method provided in the present application adopts the following technical solution:

[0007] A pipeline inner wall cleaning device for pipeline repair by interlacing method, characterized in that: it comprises a shell, a traction rope is arranged at one end of the shell, two sets of distance adjustment mechanisms for erecting the shell at the center of the pipeline are arranged on the circumference of the shell, a plurality of high-pressure nozzles are evenly arranged on the circumference of the shell, a water supply pipe interconnected with all the high-pressure nozzles is arranged in the shell, and the distance adjustment mechanisms are respectively located at both ends of the shell;

[0008] The distance adjustment mechanism includes support rods evenly arranged on the outer circumference of the shell, at least three support rods are arranged along the axial direction of the shell, one end of the support rod is hinged to the shell, and the other end of the support rod is rotatably connected to a support wheel, each of the support rods is also provided with an auxiliary support rod, one end of the auxiliary support rod is connected to the support rod, and the other end of the auxiliary support rod is hinged to a slider, the slider is slidably connected to the shell along the axial direction of the shell, the outer circumference of the shell is provided with an external thread, and the outer circumference of the shell is threadedly connected to a clamping ring that limits the sliding position of the slider.

[0009] By adopting the above technical solution, the staff first adjusts the distance adjustment mechanism according to the inner diameter of the pipeline, and drives the support rod and the shell to rotate with each other by sliding the slider on the shell, and then adjusts the support position of the support wheel, so that the six support wheels set the shell in the middle of the pipeline, and the high-pressure nozzle sprays high-pressure water through the water supply pipe, so as to clean the inner wall of the pipeline. Due to the uniform arrangement of the high-pressure nozzles, the inner wall of the pipeline can be flushed by the water flow, and the shell is set in the middle of the pipeline, so that the distance between each high-pressure nozzle and the inner wall of the pipeline is constant, so that the flushing force on the inner wall of the pipeline is more uniform. The staff only needs to pull the traction rope to clean the inner wall of the pipeline, saving time and effort. Moreover, when adjusting the distance adjustment mechanism, the staff only needs to rotate the clamp ring to adjust the three support rods of the distance adjustment mechanism together, which improves the operating efficiency.

[0010] Preferably, the outer circumferential surface of the shell is provided with a descaling mechanism for scraping the inner wall of the pipe; the descaling mechanism includes a turntable arranged on the outer circumferential surface of the shell and rotating coaxially with the shell, and a plurality of steel brushes in contact with the inside of the pipe are fixedly connected to the outer circumferential surface of the turntable, and a driving component that actively drives the turntable to rotate is provided in the shell.

[0011] By adopting the above technical solution, the driving component drives the turntable to rotate, so that the steel brush on the turntable brushes against the inner wall of the pipeline, and together with the spraying of high-pressure water flow, the cleaning efficiency of the inner wall of the pipeline is greatly improved. Since the distance adjusting mechanism supports the housing in the middle of the pipeline, the rotation of the turntable will not interfere with the inner wall of the pipeline, thus ensuring the normal movement of the housing on the inner wall of the pipeline.

[0012] Preferably, an annular groove is formed on the inner peripheral surface of the turntable. The driving component includes an annular rack fixed on the inner wall of the annular groove. The housing is also fixedly connected with a driving motor, and a gear is fixed on the output shaft of the driving motor. The gear penetrates through the outer wall of the housing and meshes with the rack.

[0013] By adopting the above technical solution, the driving motor drives the gear to rotate. Through the mutual meshing of the gear and the rack, the turntable is driven to rotate on the outer peripheral surface of the housing. Since the meshing position of the gear and the rack is inside the housing, impurities are not easily introduced into the housing after cleaning, ensuring the normal rotation.

[0014] Preferably, a first limiting ring is arranged on each side of the turntable, and the first limiting ring is fixedly connected with the outer peripheral surface of the housing.

[0015] By adopting the above technical solution, the setting of the first limiting ring plays a limiting role in the rotation position of the turntable, restricting the axial movement of the turntable along the housing, ensuring the stable meshing of the gear and the rack, and ensuring the stable rotation of the turntable.

[0016] Preferably, the turntable includes a first half-ring plate and a second half-ring plate, and the first half-ring plate and the second half-ring plate are connected to each other by bolts.

[0017] By adopting the above technical solution, the turntable is divided into parts, which not only facilitates the installation and maintenance of the turntable, but also enables the staff to use turntables of different models according to the different diameters of the inner wall of the pipeline, making the edge of the turntable closer to the inner wall of the pipeline and ensuring the brushing intensity of the steel brush on the inner wall of the pipeline.

[0018] Preferably, two sets of descaling mechanisms are arranged on both sides of the high-pressure nozzle respectively.

[0019] By adopting the above technical solution, the two turntables are arranged on both sides of the high-pressure nozzle, thus playing a limiting role in the water flow sprayed by the high-pressure nozzle, making most of the water flow remain between the two turntables, increasing the scouring frequency of the water flow on the inner wall of the pipe body, and improving the cleaning efficiency.

[0020] Preferably, the cross section of the supporting wheel is diamond-shaped.

[0021] By adopting the above technical solution, the cross section of the support wheel is set to a diamond shape, which greatly reduces the contact area between the support wheel and the inner wall of the pipe, making it difficult for the support wheel to support the dirt on the inner wall of the pipe, and reducing the obstruction of the dirt to the movement of the support wheel during the movement of the shell in the pipe. In addition, when the support wheel moves, it has a cutting effect on the dirt in the pipe, making it easier for the staff to pull the shell.

[0022] Preferably, a recovery device for recovering the cleaned waste water and waste residue is also provided between the two groups of descaling mechanisms; a plurality of water suction ports are provided on the outer peripheral surface of the shell, and the water suction ports are located between the two turntables; the recovery device includes a water suction pipe arranged in the shell and connected with the water suction port, a pump body arranged at the other end of the water suction pipe, and a waste liquid tank for receiving waste liquid impurities; an extraction mechanism for extracting waste liquid impurities is also provided on the outer peripheral surface of the shell.

[0023] By adopting the above technical solution, when the high-pressure nozzle and the descaling mechanism spray and descale the inner wall of the pipe, clean wastewater and waste residue will drip into the pipe, and some waste liquid will flow into the foundation pits on both sides through the two ends of the pipe, and some waste liquid will remain in the pipe, which will not only affect the construction environment, but also increase the cost of wastewater and waste residue cleaning for the staff. The setting of the recovery device can extract most of the wastewater and waste residue in time while the descaling mechanism and the high-pressure nozzle are working, reducing the wastewater from spreading everywhere and reducing the difficulty of subsequent cleaning of wastewater and waste residue.

[0024] Preferably, the extraction mechanism includes an annular shell coaxially rotating on the outer circumferential surface of the shell, the annular shell and the water pumping port are connected to each other, a plurality of water leakage ports are opened on the surface of the annular shell, and a plurality of bellows for extending the water pumping range are also connected to the surface of the annular shell, and a positioning component for positioning the extended position of the bellows is also provided at the connection between the bellows and the annular shell.

[0025] By adopting the above technical solution, in the process of flushing the inner wall of the pipe, the water column will impact in all directions, and finally the water column will gather at the bottom of the pipe; the staff can rotate the bellows to the bottom of the shell by rotating the ring shell, and make the port of the bellows close to the bottom wall of the pipe by stretching the bellows. The waste water after flushing will gather at the bottom under the action of gravity, so that the bellows can extract most of the waste water, reducing the residual waste water on the inner wall of the pipe, and the water flow that impacts the rest of the pipe may also enter the pumping pipe through the leaking hole during the falling process, thereby improving the efficiency of waste water extraction. When the bellows is stretched, the positioning assembly can be used to limit and shape the bellows, so that the bellows is not easily rolled into the turntable.

[0026] Preferably, the positioning component includes a rotating tube sleeved on the outer peripheral surface of the corrugated pipe. The rotating tube is rotatably connected to the ring shell. A plurality of positioning strips are connected to the end face of the rotating tube facing the port of the corrugated pipe. A positioning tube is coaxially rotatably connected to the port of the corrugated pipe. A receiving ring for receiving the positioning strips to pass through is fixedly connected to the outer peripheral surface of the positioning tube. A positioning bolt for positioning the relative sliding position of the pair of positioning strips and the receiving ring is threadedly connected to the receiving ring.

[0027] By adopting the above technical solution, when the corrugated pipe is stretched and rotated, the staff can rotate the positioning tube so that the positioning strips are wrapped around the rotating contour of the corrugated pipe. Then, the staff restricts the relative sliding of the receiving ring and the positioning strips by the top touch of the positioning bolt, and keeps the corrugated pipe at the positioned length and angle. It ensures that the corrugated pipe can maintain a proper angle during the movement of the shell.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The cleaning efficiency is improved; by arranging a plurality of high-pressure nozzles and adding the brushing of the inner wall of the pipeline by the steel brush, the cleaning efficiency of the inner wall of the pipeline is greatly improved;

[0030] 2. High adaptability; by arranging the distance adjusting mechanism, it is ensured that the shell is supported in the central area of the pipe body, and the size of the turntable can be replaced according to the size of the pipeline, ensuring the flushing of the high-pressure water flow and the brushing of the steel brush;

[0031] 3. The waste liquid is collected. Through the positioning of the corrugated pipe and in cooperation with the start of the pump body, the shell can collect the waste water on the inner wall of the pipeline during the process of advancing, reducing the mess of the on-site construction environment and also reducing the subsequent process of collecting the waste water on the inner wall of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of the overall structure of the pipeline inner wall cleaning device;

[0033] Figure 2 is a schematic diagram of a partial structure of the distance adjusting mechanism;

[0034] Figure 3 is a schematic diagram of the structure of the slider;

[0035] Figure 4 is a schematic diagram of the internal structure of the shell;

[0036] Figure 5 is a partial schematic diagram of the recycling device;

[0037] Figure 6 is a schematic diagram of the structure of the driving component;

[0038] Figure 7 It is a schematic structural diagram showing the pumping and collection component;

[0039] Figure 8 It is a schematic structural diagram showing the filter box.

[0040] Description of reference numerals: 1. Housing; 12. Cover; 13. Slide groove; 14. Pumping port; 2. Distance adjustment mechanism; 21. Support rod; 22. Auxiliary support rod; 23. Slide block; 24. Support wheel; 25. Snap ring; 3. Descaling mechanism; 31. Turntable; 311. First semi-ring plate; 312. Second semi-ring plate; 313. Ring groove; 3131. First groove; 3132. Second groove; 32. Flange; 33. Steel brush; 34. First limiting ring; 4. Spray washing mechanism; 41. High-pressure nozzle; 42. Water supply pipe; 5. Driving assembly; 51. Rack; 511. First semi-ring tooth; 512. Second semi-ring tooth; 52. Driving motor; 53. Gear; 6. Traction rope; 7. Recycling device; 71. Ring cavity; 72. Water suction pipe; 73. Pumping and collection component; 731. Waste liquid tank; 732. Pump body; 733. Water outlet pipe; 734. Filter box; 7341. Through hole; 735. Filter cloth; 8. Extraction mechanism; 81. Ring shell; 811. Leakage port; 82. Second limiting ring; 83. Bellows; 9. Positioning component; 91. Positioning sleeve; 92. Rotating pipe; 93. Positioning strip; 94. Positioning pipe; 95. Accommodating ring; 96. Positioning bolt. Detailed implementation manners

[0041] The following further describes the present application in detail with reference to all the accompanying drawings.

[0042] A pipeline inner wall cleaning device used for pipeline repair by the interpenetration method, as Figure 1 shown, includes a cylindrical housing 1. A cavity is provided inside the housing 1. One end of the housing 1 is provided with an opening, and a cover 12 for sealing the end of the housing 1 is bolted on one side of the opening of the housing 1. Two distance adjustment mechanisms 2 for supporting the housing 1 in the middle of the pipeline are further provided on the outer peripheral surface of the housing 1. A spray washing mechanism 4 and a descaling mechanism 3 for cleaning the inner wall of the pipeline are provided between the two distance adjustment mechanisms 2. A recycling device 7 for recycling most of the waste water after cleaning is also provided beside the spray washing mechanism 4.

[0043] As Figure 1 and Figure 2As shown in the figure, two distance adjustment mechanisms 2 are respectively arranged at two ends of the outer peripheral surface of the housing 1. The distance adjustment mechanism 2 includes a support rod 21, an auxiliary support rod 22, a slider 23 and a support wheel 24. There are three support rods 21 which are evenly arranged on the outer peripheral surface of the housing 1. The numbers of the auxiliary support rods 22, the sliders 23 and the support wheels 24 correspond to the number of the support rods 21 one by one. Each support rod 21 is arranged along the axial direction of the housing 1, and one end of the support rod 21 is hinged to the end of the housing 1. The hinge axis of the support rod 21 and the housing 1 is perpendicular to the axis of the housing 1. Each support wheel 24 is rotatably connected to the other end of the corresponding support rod 21. The rotation axis of the support wheel 24 and the support rod 21 is parallel to the hinge axis of the support rod 21 and the housing 1. The auxiliary support rod 22 is correspondingly arranged between the support rod 21 and the housing 1. One end of the auxiliary support rod 22 is hinged to the middle of the support rod 21, and the other end of the auxiliary support rod 22 is hinged to the slider 23. Refer to Figure 3 The slider 23 is integrally in an I shape. A chute 13 matching with the slider 23 is arranged on the outer peripheral surface of the housing 1. The chute 13 is parallel to the axis of the housing 1. Thus, by sliding the slider 23 in the chute 13, the rotation of the auxiliary support rod 22 is driven, the rotation between the support rod 21 and the housing 1 is adjusted, and further the distance between the support wheel 24 and the outer wall of the housing 1 is adjusted. In order to realize the synchronous adjustment of the three support wheels 24, an external thread is arranged on the outer peripheral surface of the housing 1, and a snap ring 25 is threadedly connected to the housing 1. The snap ring 25 is located on one side of the slider 23 facing the middle of the housing 1. Thus, by the threaded connection between the snap ring 25 and the housing 1, the snap ring 25 is driven to displace along the length direction of the housing 1, and the snap ring 25 pushes the three sliders 23 of the same distance adjustment mechanism 2, realizing the synchronous position adjustment of the three support wheels 24 and improving the operation efficiency.

[0044] The staff can adjust the two distance adjustment mechanisms 2 on the outer peripheral surface of the housing 1 according to the inner wall diameter of the pipe body, so that the six support wheels 24 are in contact with the inner wall of the pipe body, ensuring the coaxiality between the housing 1 and the pipeline, thereby improving the adaptability of the pipeline inner wall cleaning device and meeting the cleaning requirements of the pipeline inner wall cleaning device for pipelines with different diameters.

[0045] As Figure 2 shown in the figure, the cross section of the support wheel 24 is integrally in a rhombus shape, thus greatly reducing the contact area between the support wheel 24 and the pipeline inner wall. When the staff adjusts the support wheel 24, by rotating the snap ring 25, the support wheel 24 can be tightly pressed against the inner wall of the pipeline, thereby increasing the pressure of the support wheel 24 on the pipeline inner wall and improving the clamping stability of the housing 1. When the housing 1 moves in one direction, the edge of the support wheel 24 has a cutting effect on the dirt on the pipeline inner wall, thus ensuring the stable movement of the housing 1 in the pipeline.

[0046] As Figure 4As shown, the spray cleaning mechanism 4 includes high-pressure nozzles 41 arranged in the middle area of the housing 1. In this embodiment, there are 12 high-pressure nozzles 41 evenly arranged on the outer peripheral surface of the housing 1, and the axis of each high-pressure nozzle 41 passes through the axis of the housing 1; the tails of the 12 high-pressure nozzles 41 are jointly connected to a water supply pipe 42. The other end of the water supply pipe 42 passes out of the housing 1 and is connected to a water tank, and a water pump is also connected to the water supply pipe 42. Through the operation of the water pump, the liquid in the water tank is pumped into the housing 1 and sprayed out through a number of high-pressure nozzles 41. Since the high-pressure nozzles 41 are evenly arranged around the outer peripheral surface of the housing 1, the water flow can evenly spray and brush the inner wall of the pipeline through the spraying of the high-pressure nozzles 41. Moreover, through the erection of the housing 1 by the distance adjustment mechanism 2, the housing 1 and the pipeline are coaxially arranged, so as to ensure that the distance between each high-pressure nozzle 41 and the inner wall of the pipeline is equal, and the scouring pressure received by the inner wall of the pipeline is more balanced, reducing the excessive or too small scouring pressure caused by the distance on the inner wall of the pipeline and the low scouring efficiency caused by it.

[0047] As Figure 4 and Figure 5 shown, there are two descaling mechanisms 3, which are respectively located on both sides of the spray cleaning mechanism 4. The descaling mechanism 3 includes a turntable 31 coaxially arranged on the outer peripheral surface of the housing 1. The turntable 31 includes a first half-ring plate 311 and a second half-ring plate 312 of the same size. On both sides of the docking edge of the first half-ring plate 311 and the second half-ring plate 312, a flanging 32 is vertically fixed respectively. When the first half-ring plate 311 and the second half-ring plate 312 are docked with each other, a number of bolts are passed through one side of the flanging 32, and each bolt is threadedly connected with a nut, so that the first half-ring plate 311 and the second half-ring plate 312 are fixedly docked with each other. The size of the turntable 31 can be selected according to the size of the inner wall of the pipeline, so that there is a 2 cm gap between the outer contour of the turntable 31 and the inner wall of the pipeline. A number of steel brushes 33 are fixed on the outer arc surfaces of the first half-ring plate 311 and the second half-ring plate 312, and the length of the steel brushes 33 can meet the requirement of contacting the inner wall of the pipeline. First limit rings 34 are also arranged on both sides of the turntable 31. The first limit rings 34 are closely attached to the turntable 31 and are fixed on the outer peripheral surface of the housing 1, and a driving assembly 5 for driving the turntable 31 to rotate is arranged in the housing 1.

[0048] As Figure 6As shown, an arc-shaped first groove 3131 and a second groove 3132 are respectively formed on the inner arc surfaces of the first semi-ring disk 311 and the second semi-ring disk 312. When the first semi-ring disk 311 and the second semi-ring disk 312 are assembled with each other, the first groove 3131 and the second groove 3132 communicate with each other to form a ring groove 313. The driving assembly 5 includes a first semi-ring gear 511 and a second semi-ring gear 512 fixed in the first groove 3131 and the second groove 3132. The first semi-ring gear 511 and the second semi-ring gear 512 are connected to each other to form an annular rack 51. A driving motor 52 is fixedly connected to the inner wall of the housing 1. A gear 53 is fixedly connected to the output shaft of the driving motor 52. The gear 53 penetrates through the inner wall of the housing 1 and meshes with the gear 53, thereby driving the turntable 31 to rotate on the outer peripheral surface of the housing 1.

[0049] When the water pump supplies water to the high-pressure nozzle 41, at this time, the two driving motors 52 drive the two turntables 31 to rotate, so that the steel ruler on the peripheral surface of the turntable 31 scrapes the dirt on the inner wall of the pipeline, and then cooperates with the flushing of the high-pressure water column, thereby greatly improving the descaling efficiency of the inner wall of the pipeline. Moreover, the two turntables 31 are arranged on both sides of the high-pressure nozzle 41, so that the water flow sprayed by the high-pressure nozzle 41 gathers between the two turntables 31, thereby improving the flushing efficiency of the water flow on the inner wall of the pipeline between the two turntables 31.

[0050] As Figure 5 shown, a circle of water extraction ports 14 are evenly formed on the outer peripheral surface of the housing 1. In this embodiment, eight water extraction ports 14 are formed. The water extraction ports 14 are rectangular and are located between the two turntables 31, and the water extraction ports 14 are located on the side of the high-pressure nozzle 41 facing the water supply pipe 42. The above-mentioned recovery device 7 includes an annular cavity 71 fixed to the inner wall of the housing 1. The annular cavity 71 communicates with each water extraction port 14. A water extraction pipe 72 is further connected to the side of the annular cavity 71 facing the water supply pipe 42. The water extraction pipe 72 penetrates through the housing 1 and extends outside the pipeline, and the other end of the water extraction pipe 72 is further connected to a water extraction collection assembly 73 as shown in Figure 7 ; An extraction mechanism 8 for extracting the waste water on the inner wall of the pipeline is further arranged on the peripheral surface of the housing 1.

[0051] As Figure 7 and Figure 8As shown in the figure, the pumping and collecting assembly 73 includes a waste liquid tank 731, a pump body 732 disposed on one side of the waste liquid tank 731. The water inlet of the pump body 732 is connected to the end of the water suction pipe 72, and a water outlet pipe 733 is connected to the water outlet of the pump body 732. The end of the water outlet pipe 733 is located above the port of the waste liquid tank 731. When the spraying mechanism 4 and the descaling mechanism 3 work simultaneously, the pump body 732 is also started simultaneously, so as to extract the waste water inside the pipeline and reduce the damage to the surrounding environment caused by the scattered waste water. In order to reduce the waste of water resources, a filter box 734 is also placed at the port of the waste liquid tank 731. The upper end of the filter box 734 is open, and a plurality of through holes 7341 are evenly formed in the bottom surface of the filter box 734. And a filter cloth 735 covering all the through holes is laid in the filter box 734, and the end of the above-mentioned water outlet pipe 733 is located inside the filter box 734. The filter cloth 735 adopts a common sludge filter cloth 735 on the market, which has the characteristics of air permeability and water permeability and impermeability to mud, so that the waste water extracted by the pump body 732 enters the filter box 734. The waste liquid passes through the filtration of the filter cloth 735, and the impurities in the waste liquid are blocked by the filter cloth 735, and the remaining liquid passes through the filter cloth 735 and the through holes 7341 in sequence and is stored in the waste liquid tank 731. The staff can reuse the filtered liquid, greatly reducing the waste of water resources.

[0052] As Figure 5 shown, the extraction mechanism 8 includes an annular shell 81 sleeved on the outer peripheral surface of the housing 1. The cross section of the annular shell 81 is U-shaped. The two side edges of the annular shell 81 are hermetically rotated with the outer arm of the housing 1, and the internal space of the annular shell 81 is communicated with the water suction pipe 72; a second limiting ring 82 is provided on each of the two sides of the annular shell 81. The second limiting ring 82 is closely attached to the side wall of the annular shell 81 and fixedly connected to the outer peripheral surface of the housing 1, thus ensuring the stability of the rotation of the annular shell 81 on the outer peripheral surface of the housing 1; two bellows 83 are also provided on the outer peripheral surface of the annular shell 81. The two bellows 83 are adjacent to each other. One end of the bellows 83 is fixed on the outer peripheral surface of the annular shell 81 and communicated with the inner wall of the annular shell 81. When the pipeline inner wall cleaning device is placed in the pipeline, the bellows 83 can be located at the bottom of the housing 1 by rotating the annular shell 81, and then by stretching the bellows 83, the end of the bellows 83 can be made closer to the bottom wall of the bellows 83. During the process of the high-pressure nozzle 41 spraying and washing around, the two turntables 31 gather most of the waste water between the two turntables 31, reducing the splashing of the waste water everywhere. The liquid will gather at the bottom of the pipeline under the action of gravity. At this time, the bellows 83 supported on the outer arm can timely pump most of the waste water into the water suction pipe 72 under the action of the pump body 732, thus reducing the scattered flow of the waste water everywhere and also timely cleaning the inner wall of the pipeline.

[0053] As Figure 5As shown, a plurality of water leakage holes 811 are provided along the annular direction of the annular shell 81 on the side of the annular shell 81 away from the bellows 83. Due to the uniform arrangement of the high-pressure nozzles 41, the flushing water will fully contact the inner wall of the pipe, and eventually the liquid will gather at the bottom of the pipe, some of the liquid will gather at the bottom of the pipe along the curvature of the inner wall of the pipe, and some of the liquid will directly drip downwards, and the opening of the water leakage holes can collect the liquid dripping downwards in time, thereby reducing the pressure extracted by the bellows 83.

[0054] like Figure 5 As shown, the bellows 83 can freely adjust its own length and rotation angle. In order to keep the bellows 83 stably in the best extraction position, the outer circumference of the bellows 83 is also provided with a pair of positioning components 9 for positioning the bellows 83 at the stretching position and the rotation position. The positioning component 9 includes a positioning sleeve 91 arranged at the fixing position of the bellows 83 and the annular shell 81. The positioning sleeve is coaxially arranged with the bellows 83, and one end face of the positioning sleeve is fixed to the annular shell 81; the other end of the positioning sleeve is coaxially connected to a rotating tube 92, and the outer circumference of the rotating tube 92 is fixed with two flexible positioning strips 93 by bolts, and the port position of the bellows 83 is coaxially connected to a positioning tube 94, and the outer circumference of the positioning tube 94 is fixed with two accommodating rings 95, and the connection of the centers of the two accommodating rings 95 passes through the midpoint of the positioning tube 94.

[0055] After the staff stretches and rotates the bellows 83, they can rotate the rotating tube 92 so that the two positioning strips 93 are respectively attached to the minimum inner arc surface and the maximum inner arc surface of the bellows 83 along the length direction of the bellows 83, and then the other end of the positioning strip 93 is inserted into the corresponding accommodating ring 95. The outer wall of the accommodating ring 95 is threadedly connected with a positioning bolt 96 that touches the positioning strip 93. Finally, the staff can cut off the positioning strip 93 of excess length to prevent it from being rolled into the turntable 31. By screwing the positioning bolt 96, the sliding of the accommodating ring 95 and the positioning strip 93 is limited, so that the positioning strip 93 is kept in the corresponding bending state, thereby keeping the bellows 83 in the corresponding stretching and bending device. In the process of rotating the turntable 31, each bellows 83 can be kept in the corresponding filling, and it is not easy for the bellows 83 to be rolled into the gap between the turntable 31 and the pipeline, which ensures the normal extraction of wastewater by the port of the bellows 83 during the movement of the shell 1.

[0056] like Figure 1 As shown, a traction rope 6 is fixedly connected to the side of the cover body 12 facing away from the shell 1. When the drive motor 52 and the water pump are working, the staff can slowly pull the traction rope 6 to drive the shell 1 to move forward at a uniform speed in the pipeline and efficiently clean the inner wall of the pipeline, thereby reducing the labor consumption of the staff.

[0057] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A pipeline inner wall cleaning device used for pipeline repair by interlacing method, Features: The invention comprises a shell (1), one end of which is provided with a traction rope (6), the circumferential surface of the shell (1) is provided with two sets of distance adjustment mechanisms (2) for erecting the shell (1) at the center of a pipeline, a plurality of high-pressure nozzles (41) are evenly arranged on the circumferential surface of the shell (1), a water supply pipe (42) interconnected with the high-pressure nozzles (41) is provided in the shell (1), and the distance adjustment mechanisms (2) are respectively located at both ends of the shell (1); The distance adjustment mechanism (2) comprises support rods (21) uniformly arranged on the outer peripheral surface of the shell (1), at least three support rods (21) are arranged along the axial direction of the shell (1), one end of the support rod (21) is hingedly connected to the shell (1), and the other end of the support rod (21) is rotatably connected to a support wheel (24), each of the support rods (21) is also provided with an auxiliary support rod (22), one end of the auxiliary support rod (22) is connected to the support rod (21), and the other end of the auxiliary support rod (22) is hingedly connected to a slider (23), and the slider (23) is slidably connected to the shell (1) along the axial direction of the shell (1), and the outer peripheral surface of the shell (1) is provided with an external thread, and the outer peripheral surface of the shell (1) is threadedly connected to a retaining ring (25) for limiting the sliding position of the slider (23); The outer peripheral surface of the housing (1) is provided with a descaling mechanism (3) for scraping the inner wall of the pipeline; The descaling mechanism (3) comprises a rotating disk (31) arranged on the outer peripheral surface of the housing (1) and coaxially rotating with the housing (1); a plurality of steel brushes (33) contacting the inside of the pipeline are fixedly connected to the outer peripheral surface of the rotating disk (31); and a driving assembly (5) for actively driving the rotating disk (31) to rotate is arranged in the housing (1); A recovery device (7) for recovering the cleaned waste water and waste residue is also provided between the two groups of descaling mechanisms (3); The outer circumferential surface of the shell (1) is provided with a plurality of water suction ports (14), the water suction ports (14) being located between the two rotating disks (31); the recovery device (7) comprises a water suction pipe (72) arranged in the shell (1) and communicating with the water suction ports (14), a pump body (732) arranged at the other end of the water suction pipe (72), and a waste liquid tank (731) for receiving waste liquid impurities; the outer circumferential surface of the shell (1) is also provided with an extraction mechanism (8) for extracting waste liquid impurities; The extraction mechanism (8) comprises an annular shell (81) coaxially rotating on the outer peripheral surface of the shell (1); the annular shell (81) and the water extraction port (14) are connected to each other; a plurality of water leakage ports (811) are provided on the surface of the annular shell (81); a plurality of bellows (83) for extending the water extraction range are also connected to the surface of the annular shell (81); a positioning assembly (9) for positioning the extended position of the bellows (83) is also provided at the connection between the bellows (83) and the annular shell (81); The positioning component (9) includes a rotating tube (92) sleeved on the outer peripheral surface of the corrugated pipe (83). The rotating tube (92) is rotatably connected to the ring shell (81). A plurality of positioning bars (93) are connected to the end surface of the rotating tube (92) facing the port of the corrugated pipe (83). A positioning tube (94) is coaxially and rotatably connected to the port of the corrugated pipe (83). A receiving ring (95) for receiving the positioning bars (93) to pass through is fixedly connected to the outer peripheral surface of the positioning tube (94). A positioning bolt (96) for positioning the relative sliding position of a pair of positioning bars (93) and the receiving ring (95) is threadedly connected to the receiving ring (95).

2. The pipeline inner wall cleaning device for pipeline repair by the insertion method according to claim 1, characterized in that: An annular groove (313) is formed on the inner peripheral surface of the turntable (31). The driving component (5) includes an annular rack (51) fixedly connected to the inner wall of the annular groove (313). The housing (1) is also fixedly connected with a driving motor (52). A gear (53) is fixedly connected to the output shaft of the driving motor (52). The gear (53) penetrates the outer wall of the housing (1) and meshes with the rack (51).

3. The pipeline inner wall cleaning device for pipeline repair by the insertion method according to claim 2, characterized in that: A first limiting ring (34) is arranged on each side of the turntable (31). The first limiting ring (34) is fixedly connected to the outer peripheral surface of the housing (1).

4. The pipeline inner wall cleaning device for pipeline repair by the insertion method according to claim 2, characterized in that: The turntable (31) includes a first half-ring plate (311) and a second half-ring plate (312). The first half-ring plate (311) and the second half-ring plate (312) are connected to each other by bolts.

5. The pipeline inner wall cleaning device for pipeline repair by the insertion method according to claim 1, characterized in that: Two sets of descaling mechanisms (3) are provided and are respectively located on both sides of the high-pressure nozzle (41).

6. The pipeline inner wall cleaning device for pipeline repair by the insertion method according to claim 1, characterized in that: The cross section of the supporting wheel (24) is diamond-shaped.

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