Urban underground drainage pipeline system

Abstract

The present application relates to a city underground drainage pipeline system, comprising a main pipeline buried underground, a plurality of sewage shafts arranged on the ground and a connecting pipeline connecting the sewage shafts and the main pipeline; one end of the connecting pipeline is communicated with the side of the top of the sewage shaft, and the other end is communicated with the side of the main pipeline; the connecting pipeline is arranged downwardly and obliquely towards the drainage direction of the main pipeline; a well lid is arranged on the top of the sewage shaft; a drainage opening is further arranged on the ground; the drainage opening is communicated with a ground branch drainage pipeline embedded close to the ground; the branch drainage pipeline is communicated with the sewage shaft; the city underground drainage pipeline system adopts the obliquely arranged connecting pipeline, which, while draining the water in the sewage shaft to the main pipeline, uses the impact force brought by the oblique drainage to impact the main pipeline, thereby increasing the momentum and impact force of the water flow in the main pipeline and effectively reducing the deposition and blockage of the residues in the main pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of urban public drainage, in particular to an urban underground drainage pipeline system. BACKGROUND

[0002] The urban drainage system is an engineering facility system for treating and draining urban sewage and rainwater, and is a component of urban public facilities. The urban drainage system planning is a component of the overall urban planning. The urban drainage system is usually composed of drainage pipelines and sewage treatment plants. In the case of implementing the sewage and rainwater diversion system, the sewage is collected by the drainage pipeline, sent to the sewage treatment plant, and then discharged into the water body or recycled; the rainwater runoff is collected by the drainage pipeline and then discharged into the water body nearby.

[0003] For the drainage system, in addition to the problem of the drainage flow being less than the rainfall in extreme weather, the debris carried in the water flow causes a big problem of blocking the main pipeline. SUMMARY

[0004] In order to solve the above problems existing in the prior art, the present application provides an urban underground drainage pipeline system, which adopts an inclined connecting pipeline to realize the impact on the main pipeline by using the impact force caused by the inclined drainage while draining the water in the sewage shaft to the main pipeline, thereby increasing the momentum and impact force of the water flow in the main pipeline and effectively reducing the deposition and blockage of the debris in the main pipeline.

[0005] The technical scheme of the present application is as follows:

[0006] The urban underground drainage pipeline system comprises a main pipeline buried underground, a plurality of sewage shafts arranged on the ground, and a connecting pipeline connecting the sewage shafts and the main pipeline; one end of the connecting pipeline is communicated with the side surface above the bottom end of the sewage shaft, and the other end is communicated with the side surface of the main pipeline; the connecting pipeline is inclined downward in the direction of the drainage of the main pipeline; the top of the sewage shaft is provided with a well lid; a drainage opening is further arranged on the ground; the drainage opening is communicated with an underground branch drainage pipe embedded near the ground; the branch drainage pipe is communicated with the sewage shaft.

[0007] The urban underground drainage pipeline system further comprises a main pipeline slag removal device, the main pipeline slag removal device comprises an extrusion mechanism and a slag collection mechanism; the extrusion mechanism comprises a cylinder body which can be inserted into the main pipeline and has open front and rear ends, a plurality of guide tracks which are uniformly arranged around the inner circumference of the cylinder body and are fixed to the inner wall of the cylinder body near the front end, and a plurality of front pressing plates which are respectively matched with the guide tracks; the guide tracks extend along the front end of the cylinder body, and the guide tracks comprise a horizontal straight track and an arc-shaped curved track which are smoothly connected; the arc-shaped curved track is curved towards the axial direction of the cylinder body; the middle part of the front pressing plate is provided with a first pin shaft; the first pin shaft is in sliding fit with the guide track, so that the front pressing plate can move along the guide track; a plurality of fixed hinge points are arranged on the rear part of the cylinder body corresponding to the front pressing plate; a lever is hingedly connected to the fixed hinge points at the middle part, and one end close to the inner wall of the cylinder body is hingedly connected to a friction block; a notch is formed in the rear part of the front pressing plate to form left and right dovetail strips; a long strip sliding key hole is formed on the dovetail strip along the length direction of the dovetail strip; the front end of the front pressing plate is matched with the long strip sliding key hole through a second pin shaft, so that the rear pressing plate can move along the long strip sliding key hole; the rear end of the front pressing plate is rotationally connected to the other end of the lever through a linear telescopic rod which can be elongated at both ends; a push rod is hingedly connected between the lever and the rear pressing plate; the upper end of the push rod is hingedly connected to the lever close to the other end of the lever, and the lower end of the push rod is hingedly connected to the rear part of the rear pressing plate; the slag collection mechanism comprises a rotary feeding head and a long cylindrical hollow metal mesh cylinder connected behind the rotary feeding head; the rotary feeding head and the hollow metal mesh cylinder pass through the center of the cylinder body and extend into the main pipeline; when the rear end of the linear telescopic rod is elongated, the lever is deflected around the fixed hinge point to make the friction block abut against the inner wall of the cylinder body, and the lever pushes the push rod to deflect the rear part of the rear pressing plate downward for pressing, and when the front end of the linear telescopic rod is elongated, the front pressing plate is pushed to move forward along the guide track and deflects downward for pressing at the front end in the process of moving forward; the front pressing plate and the rear pressing plate jointly extrude the slag in the cylinder body and make part of the slag combined with the hollow metal mesh cylinder.

[0008] The rear end of the cylinder body is uniformly provided with a plurality of front pushing mechanisms; the front pushing mechanism comprises a friction wheel, a motor integrated on one side or both sides of the friction wheel to drive the friction wheel, and a protective shell to fix and support the motor and realize waterproof of the motor; the rear end of the cylinder body extends in the axial direction and has a fixing frame; one end of a support rod is hingedly connected to the fixing frame, and the other end is fixedly connected with the protective shell; a tension spring is connected between the middle part of the support rod and the rear end of the cylinder body to make the friction wheel abut against the inner wall of the main pipeline.

[0009] The friction wheel comprises a rigid structure wheel and a deformable carcass sleeved on the outer circumference of the rigid structure wheel; the deformable carcass comprises a high-friction rubber sealing sleeve and a electrorheological fluid filled in the high-friction rubber sealing sleeve; the high-friction rubber sealing sleeve is provided with an electrode layer pair on the opposite surfaces; an external circuit applies an electric field to the electrorheological fluid through the electrode layer pair to change the viscosity and phase state of the electrorheological fluid.

[0010] Wherein, the rear of the rotary feeding head is outwardly flared with a plurality of rearwardly inclined inclined support rods to support the rotary feeding head; one end of the inclined support rod is hinged to the rear of the rotary feeding head, and the other end is hinged to a roller, which abuts against the inner wall of the main pipeline; a compression spring is connected between the inclined support rod and the rear of the rotary feeding head to outwardly spread the inclined support rod.

[0011] Wherein, the straight telescopic rod is a hydraulic rod or an electric push rod.

[0012] Wherein, the lever is S-shaped.

[0013] Wherein, the outer periphery of the rotary feeding head is provided with helical blades, and the external power drives the rotary feeding head to rotate along the main pipeline through the hollow metal mesh cylinder.

[0014] Wherein, the main pipeline slag removal method comprises the following steps:

[0015] ①First, use external power to drive the hollow metal mesh cylinder to rotate, thereby driving the rotary feeding head to rotate and feed, and in this process, the inclined support rods are unfolded outwardly to make the rotary feeding head feed along the central axis of the main pipeline;

[0016] ②Insert the cylinder from the end of the main pipeline, and the friction wheel of the pushing mechanism tightly abuts against the inner wall of the main pipeline under the action of the tension spring; the controller of the main pipeline slag removal device controls the external circuit to pass through the strong electric field of the electrode layer to quickly turn on and off the current variable fluid, so that the current variable fluid is quickly and continuously converted between solid and liquid states, while meeting the torque transmission, the deformable carcass outer surface can be automatically adjusted and adapted to the inner wall of the main pipeline in real time, and the sticking area and friction are maintained; at the same time, the motor is driven to rotate the friction wheel by remote control or the pre-set controller, and the cylinder is pushed forward;

[0017] ③During the forward movement of the cylinder, the slag in front of the cylinder is squeezed into the cylinder, the controller controls the extension of the telescopic rods at both ends of the straight telescopic rod to push the front pressing plate forward and the lever to overturn; the lever overturning pushes the upper end of the lever outward to overturn the friction block outward, and since the friction block is originally close to the cylinder, the friction block quickly abuts against the inner wall of the cylinder, thereby forming a friction support; during the lever overturning process, the rear pressing plate is pushed by the push rod to overturn and squeeze the slag in the direction of the cylinder axis; due to the abutting and fixing action of the friction block, the extension of the telescopic rods at both ends of the straight telescopic rod is converted into pushing the front pressing plate forward, and the front pressing plate is first moved forward under the guidance of the horizontal straight path, so that the cylinder is elongated forward and wraps more slag in front; then the front pressing plate is guided to continue to move forward while deflecting to the cylinder axis to squeeze the slag, forming the effect that the front pressing plate squeezes the slag in the direction of the cylinder axis and backward, and the rear pressing plate squeezes the slag in the direction of the cylinder axis and forward;

[0018] ④Part of the slag is extruded into the hollow metal mesh cylinder and compacted, and due to the various structures and fibers contained in the slag, a thick compacted slag layer is firmly attached and connected to the outer periphery of the hollow metal mesh cylinder;

[0019] ⑤After completion, the controller controls the telescopic rods at both ends of the straight telescopic rod to shorten, so that the lever and the front pressing plate move reversely to the initial state; the controller controls the motor to start again, so that the front pushing mechanism pushes the extrusion mechanism forward by a distance;

[0020] ⑥The process of steps ② to ⑤ is repeated, so that the main pipeline slag cleaning device continuously advances and continuously extrudes and compacts the slag into the hollow metal mesh cylinder and around it;

[0021] ⑦After the cleaning is completed or a period of time, the controller controls the motor to continue to reverse, so as to pull the extrusion mechanism back to the outlet, or directly advance to the outlet in front of the main pipeline;

[0022] ⑧After the extrusion mechanism and the front pushing mechanism move out of the main pipeline, only part of the free slag and the compacted slag locked and attached in and around the hollow metal mesh cylinder are left in the main pipeline; at this time, the hollow metal mesh cylinder can be pulled out to take out more slag; the remaining slag can be repeatedly cleaned by the above steps or can be cleaned by water flushing.

[0023] The present application has the following beneficial effects:

[0024] 1、The urban underground drainage pipeline system of the present application adopts the inclined connecting pipeline, which, while draining the water in the sewage shaft to the main pipeline, utilizes the impact force brought by the inclined drainage to impact the main pipeline, thereby increasing the momentum and impact force of the water flow in the main pipeline and effectively reducing the deposition and blockage of the slag in the main pipeline.

[0025] 2、The main pipeline slag cleaning device of the present application utilizes the cooperation of the extrusion mechanism and the slag collecting mechanism to extrude the slag and sludge in the main pipeline into the hollow metal mesh cylinder and compact it, and due to the various structures and fibers contained in the slag, a thick compacted slag layer is firmly attached and connected to the outer periphery of the hollow metal mesh cylinder; after accumulating to a certain extent, the hollow metal mesh cylinder can be pulled out to take out more slag; thereby, more slag and sludge can be cleaned at one time, and the remaining slag can be repeatedly cleaned by the above steps or can be cleaned by water flushing; the device can quickly, continuously and efficiently clean the slag and sludge in the main pipeline and dredge the main pipeline, and the cleaning effect and efficiency are higher when the blockage is more serious; and the main pipeline slag cleaning device can even advance from the head to the tail without frequent return to dump the slag, but can directly extract the hollow metal mesh cylinder to clean the slag at the last time, thereby significantly improving the slag cleaning efficiency.

[0026] 3, The slag collecting mechanism of the application utilizes external power to drive the hollow metal mesh cylinder to rotate, thereby driving the rotary feeding head to rotate and feed, and in this process, the inclined support rod expands outward to ensure that the rotary feeding head feeds along the central axis of the main pipeline; thereby ensuring the stability of the position and posture of the rotary feeding head and the hollow metal mesh cylinder. It is ensured that it is basically located at the center position of the main pipeline and the extrusion mechanism.

[0027] 4, The extrusion mechanism of the application utilizes the extension of the telescopic rods at both ends of the linear telescopic rod to respectively push the front pressing plate to move forward and the lever to overturn; the overturning of the lever pushes the upper end of the lever outward to push the friction block to turn outward. Since the friction block is originally close to the cylinder body, the friction block quickly tightly abuts against the inner wall of the cylinder body, thereby forming a friction support; and in the overturning process of the lever, the rear pressing plate is pushed by the push rod to overturn and extrude the slag towards the cylinder axis; due to the abutting and fixing effect of the friction block, the extension of the telescopic rods at both ends of the linear telescopic rod is all converted into pushing the front pressing plate forward, and the front pressing plate is first moved forward under the guidance of the horizontal straight path, thereby making the cylinder body elongate forward and wrap more slag in front; then the front pressing plate is guided to continue to move forward by the arc-shaped path, and at the same time, it is deflected towards the cylinder axis to extrude the slag, thereby cleverly forming the effect that the front pressing plate extrudes the slag in the cylinder towards the central axis and backward, and the rear pressing plate extrudes the slag in the cylinder towards the central axis and forward.

[0028] 5, The friction wheel of the application utilizes the characteristics of electrorheological fluid, utilizes an external circuit to apply a fast on-off electric field to the friction wheel, thereby making the electrorheological fluid continuously convert between solid and liquid states at a high speed, meeting the torque transmission while enabling the deformable carcass outer surface to automatically adjust and adapt to the inner wall of the main pipeline in real time, maintaining the sticking area and friction force; at the same time, the motor is controlled to drive the friction wheel to rotate by remote control or a pre-set program controller, the cylinder is pushed to move forward, and the stability of the forward power is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 It is a schematic diagram of the underground drainage pipeline system of the application;

[0030] Fig. 2 It is a schematic diagram of the main pipeline slag removal device of the application at the beginning;

[0031] Fig. 3 It is a schematic diagram of the main pipeline slag removal device of the application when extruding slag;

[0032] Fig. 4 It is a partial schematic diagram of the extrusion mechanism and the front pushing mechanism of the main pipeline slag removal device of the application at the beginning;

[0033] Fig. 5 It is a partial schematic diagram of the extrusion mechanism and the front pushing mechanism of the main pipeline slag removal device of the application when extruding slag;

[0034] Fig. 6Figure 1 is a schematic diagram of the cooperation of the front and rear pressing plates and the linear telescopic rod of the present application;

[0035] Fig. 7 Figure 2 is a schematic diagram of the front pushing mechanism in the main pipeline of the present application;

[0036] Fig. 8 Figure 3 is a schematic diagram of the cross-sectional structure of the friction wheel of the present application.

[0037] The reference signs in the figures are as follows:

[0038] 1. main pipeline; 2. sewage shaft; 21. well cover; 3. connecting pipeline; 4. drainage port; 41. underground sub-drainage pipeline; 5. extrusion mechanism; 51. cylinder body; 511. fixing frame; 512. support rod; 513. tension spring; 52. guide rail; 521. horizontal straight track; 522. arc-shaped curved track; 53. front pressing plate; 531. dovetail; 532. long strip sliding key hole; 54. fixed hinge point; 55. lever; 56. friction block; 57. rear pressing plate; 58. linear telescopic rod; 59. pushing rod; 6. slag collecting mechanism; 61. rotary feeding head; 62. hollow metal mesh cylinder; 63. inclined support rod; 64. roller; 65. compression spring; 7. front pushing mechanism; 71. friction wheel; 711. rigid structure wheel; 712. deformable tire body; 713. high-friction rubber sealing sleeve; 714. electro-rheological fluid; 715. electrode layer pair; 72. motor; 73. protective shell. DETAILED DESCRIPTION

[0039] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] Reference should be made to Figs. 1 to 8 The urban underground drainage pipeline system comprises a main pipeline 1 buried underground, a plurality of sewage shafts 2 arranged on the ground, and connecting pipelines 3 connecting the sewage shafts 2 and the main pipeline 1; one end of each connecting pipeline 3 is connected to the side of the upper part of the bottom of the sewage shaft 2, and the other end is connected to the side of the main pipeline 1; the connecting pipelines 3 are arranged inclined downward toward the drainage direction of the main pipeline 1; the top of each sewage shaft 2 is provided with a well cover 21; a drainage port 4 is also arranged on the ground; the drainage port 4 is connected to an underground sub-drainage pipeline 41 embedded near the ground; the sub-drainage pipeline 41 is connected to the sewage shaft 2.

[0041] Further, the urban underground drainage pipeline system further comprises a main pipeline slag removal device, the main pipeline slag removal device comprising an extrusion mechanism 5 and a slag collection mechanism 6; the extrusion mechanism 5 comprising a barrel 51 which can be inserted into the main pipeline 1 and has open ends at the front and back, a plurality of guide rails 52 which are evenly arranged around the inner circumference of the barrel 51 and are fixed to the inner wall of the barrel 51 near the front end, and a plurality of front pressing plates 53 which are respectively matched with the guide rails 52; the guide rails 52 extend along the front end of the barrel 51, and the guide rails 52 comprise a horizontal straight track 521 and an arc-shaped curved track 522 which are smoothly connected; the arc-shaped curved track 522 is curved towards the axial direction of the barrel 51; the middle part of the front pressing plate 53 is provided with a first pin shaft; the first pin shaft is in sliding cooperation with the guide rail 52, so that the front pressing plate 53 can move along the guide rail 52; a plurality of fixed hinge points 54 are arranged at the back of the barrel 51 corresponding to the front pressing plate 53; a lever 55 is hinged to the fixed hinge point 54 at the middle part, and one end close to the inner wall of the barrel 51 is hinged to a friction block 56; a notch is formed at the back of the front pressing plate 53 to form two dovetail strips 531; a long strip sliding key hole 532 is formed on the dovetail strip 531 along the length direction; a rear pressing plate 57 is matched with the long strip sliding key hole 532 through a second pin shaft at the front end, so that the rear pressing plate 57 can move along the long strip sliding key hole 532; a linear telescopic rod 58 which can be extended at both ends is rotationally connected to the other end of the lever 55 at the back end of the front pressing plate 53; a push rod 59 is hinged between the lever 55 and the rear pressing plate 57; the upper end of the push rod 59 is hinged to the lever 55 close to the other end, and the lower end of the push rod 59 is hinged to the rear part of the rear pressing plate 57; the slag collection mechanism 6 comprises a rotating feed head 61 and a long columnar hollow metal mesh cylinder 62 connected behind the rotating feed head 61; the rotating feed head 61 and the hollow metal mesh cylinder 62 pass through the center of the barrel 51 and enter the main pipeline 1; when the rear end of the linear telescopic rod 58 is extended, the lever 55 is deflected around the fixed hinge point 54 to make the friction block 56 abut against the inner wall of the barrel 51, and the lever 55 pushes the push rod 59 to deflect the rear part of the rear pressing plate 57 downward, and when the front end of the linear telescopic rod 58 is extended, the front pressing plate 53 is pushed to move forward along the guide rail 52 and deflect downward at the front end in the process; the front pressing plate 53 and the rear pressing plate 57 jointly extrude the slag in the barrel 51 and make part of the slag combined with the hollow metal mesh cylinder 62.

[0042] Further, a plurality of front pushing mechanisms 7 are evenly arranged behind the back end of the barrel 51; the front pushing mechanism 7 comprising a friction wheel 71, a motor 72 integrated on one side or both sides of the friction wheel 71 to drive the friction wheel 71, and a protective shell 73 to fix and support the motor 72 and realize waterproof of the motor 72; the back end of the barrel 51 extends axially to have a fixing frame 511; one end of a supporting rod 512 is hinged to the fixing frame 511, and the other end is fixedly connected with the protective shell 73; a tension spring 513 is connected between the middle part of the supporting rod 512 and the back end of the barrel 51 to make the friction wheel 71 abut against the inner wall of the main pipeline 1 with force.

[0043] Further, the friction wheel 71 comprises a rigid structure wheel 711 and a deformable tire body 712 sleeved on the outer circumference of the rigid structure wheel 711; the deformable tire body 712 comprises a high-friction rubber sealing sleeve 713 and an electrorheological fluid 714 filled in the high-friction rubber sealing sleeve 713; the high-friction rubber sealing sleeve 713 is provided with an electrode layer pair 715 on opposite surfaces; an external circuit applies an electric field to the electrorheological fluid 714 through the electrode layer pair 715 to change the viscosity and phase state of the electrorheological fluid 714.

[0044] Further, the rear part of the rotary feeding head 61 is outwardly flared to have a plurality of rearwardly inclined inclined support rods 63 to support the rotary feeding head 61; one end of the inclined support rod 63 is hinged to the rear part of the rotary feeding head 61, and the other end is hinged to a roller 64 abutting against the inner wall of the main pipeline 1; a compression spring 65 is connected between the inclined support rod 63 and the rear part of the rotary feeding head 61 to outwardly spread the inclined support rod 63.

[0045] Further, the straight telescopic rod 58 is a hydraulic rod or an electric push rod.

[0046] Further, the lever 55 is S-shaped.

[0047] Further, the outer circumference of the rotary feeding head 61 is provided with helical blades, and an external power drives the rotary feeding head 61 to rotate and feed along the main pipeline 1 through the hollow metal mesh cylinder 62.

[0048] Further, the main pipeline slag removal method comprises the following steps:

[0049] ①First, an external power is used to drive the hollow metal mesh cylinder 62 to rotate, thereby driving the rotary feeding head 61 to rotate and feed, and in this process, the inclined support rod 63 is outwardly spread to make the rotary feeding head 61 feed along the central axis of the main pipeline 1;

[0050] ②The cylinder body 51 is inserted from the end part of the main pipeline 1, the friction wheel 71 of the front pushing mechanism 7 is tightly abutted against the inner wall of the main pipeline 1 under the action of the tension spring 513, the controller of the main pipeline slag removal device controls an external circuit to apply a strong electric field to the electrorheological fluid 714 through the electrode layer pair 715 to make the electrorheological fluid 714 continuously and quickly convert between solid and liquid states, while meeting the torque transmission, the outer surface of the deformable tire body 712 can be automatically adjusted and adapted to the inner wall of the main pipeline 1 in real time to maintain the sticking area and friction force; at the same time, the motor 72 drives the friction wheel 71 to rotate to push the cylinder body 51 to move forward through remote control or pre-set controller control;

[0051] ③Referring to Figs. 2 to 6In the process of the cylinder 51 moving forward, the slag in front of the cylinder 51 is extruded into the cylinder 51, the controller controls the telescopic rods at both ends of the linear telescopic rod 58 to extend, respectively pushing the front pressing plate 53 to move forward and the lever 55 to overturn; the lever 55 overturning pushes the friction block 56 at the upper end outward to flip outward, since the friction block 56 is originally close to the cylinder 51, the friction block 56 quickly tightly abuts against the inner wall of the cylinder 51, thereby forming a friction support; and the lever 55 overturning pushes the rear pressing plate 57 to flip and extrude the slag in the axial direction of the cylinder 51 through the push rod 59; due to the abutting and fixing effect of the friction block 56, the extension of the telescopic rods at both ends of the linear telescopic rod 58 is all converted into pushing the front pressing plate 53 to move forward, the front pressing plate 53 is first moved forward under the guidance of the horizontal straight track 521, thereby making the cylinder 51 elongate forward and wrap more slag in front; then the front pressing plate 53 is guided to continue moving forward by the arc-shaped curved track 522 and is deflected to the axial center of the cylinder 51 to extrude the slag, forming the effect that the front pressing plate 53 and the rear pressing plate 57 jointly extrude the slag in the cylinder 51 towards the central axis and forward and backward respectively;

[0052] ④Part of the slag is extruded into the hollow metal mesh cylinder 62 and compacted, since the slag contains various structures and fibers, a layer of relatively thick compacted slag is firmly attached and connected to the outer periphery of the hollow metal mesh cylinder 62;

[0053] ⑤After completion, the controller controls the telescopic rods at both ends of the linear telescopic rod 58 to shorten, making the lever 55 and the front pressing plate 53 move reversely to the initial state; the controller controls the motor 72 to start again, making the front pushing mechanism 7 push the extrusion mechanism 5 to move forward by a distance again;

[0054] ⑥The process of steps ② to ⑤ is repeated, thereby making the main pipeline slag cleaning device continuously move forward and extrude and compact the slag into the hollow metal mesh cylinder and around;

[0055] ⑦After cleaning is completed or a period of time, the controller controls the motor 72 to continuously reverse, thereby pulling the extrusion mechanism 5 to return to the outlet in the original route, and the extrusion mechanism 5 can also be directly moved to the outlet in front of the main pipeline 1 if appropriate;

[0056] ⑧After the extrusion mechanism 5 and the front pushing mechanism 7 move out of the main pipeline 1, at this time, only part of the slag is free in the main pipeline 1 and the compacted slag is locked and attached in the hollow metal mesh cylinder 62 and around; at this time, the hollow metal mesh cylinder 62 is pulled out to take out more slag; the remaining slag can be repeatedly cleaned by the above steps or can be cleaned by the water flushing method.

[0057] The above is only an embodiment of the present application, and does not limit the patent range of the present application, any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. An urban underground drainage pipeline system, characterized in that: It includes a main pipeline (1) buried underground, multiple drainage shafts (2) set on the ground, and a connecting pipe (3) connecting the drainage shafts (2) and the main pipeline (1); one end of the connecting pipe (3) is connected to the side above the bottom of the drainage shaft (2), and the other end is connected to the side of the main pipeline (1); the connecting pipe (3) is inclined downward towards the drainage direction of the main pipeline (1); a manhole cover (21) is set on the top of the drainage shaft (2); a drain outlet (4) is also set on the ground; the drain outlet (4) is connected to an underground branch drain pipe (41) embedded near the ground; the branch drain pipe (41) is connected to the drainage shaft (2); The urban underground drainage pipeline system also includes a main pipeline cleaning device, which includes a squeezing mechanism (5) and a slag collection mechanism (6); the squeezing mechanism (5) includes a cylinder (51) that can be inserted into the main pipeline (1) and is open at both ends, multiple guide rails (52) evenly arranged around the inner circumference of the cylinder (51) and fixed on the inner wall of the cylinder (51) near the front end, and multiple front pressure plates (53) that cooperate with the guide rails (52); the guide rails (52) extend along the front end of the cylinder (51), and the guide rails (52) include a smoothly connected horizontal straight track (521) and an arc-shaped bend (522); the arc-shaped bend (522) faces the cylinder (51) 51) The axial direction is bent; a first pin is provided in the middle of the front pressure plate (53); the first pin slides with the guide rail (52) so that the front pressure plate (53) can move along the guide rail (52); a number of fixed hinge points (54) are provided in the rear part of the cylinder (51) corresponding to the front pressure plate (53); a lever (55) is hinged in the middle to the fixed hinge point (54), and one end near the inner wall of the cylinder (51) is hinged to a friction block (56); a notch is opened in the rear part of the front pressure plate (53) to form two dovetail strips (531) on the left and right; a long sliding key hole (532) is opened on the dovetail strip (531) along its length direction; the front end of the rear pressure plate (57) passes through the second pin The shaft engages with the elongated sliding key hole (532) to allow the rear pressure plate (57) to move along the elongated sliding key hole (532); the rear end of the front pressure plate (53) is rotatably connected to the other end of the lever (55) with a linear telescopic rod (58) that can be extended at both ends; a push rod (59) is hinged between the lever (55) and the rear pressure plate (57); the upper end of the push rod (59) is hinged to the lever (55) near its other end, and the lower end of the push rod (59) is hinged to the rear middle part of the rear pressure plate (57); the slag collection mechanism (6) includes a rotary feed head (61) and a long cylindrical hollow metal mesh cylinder (62) connected to the rotary feed head (61); the rotary feed head (61) The hollow metal mesh cylinder (62) passes through the center of the cylinder (51) and extends into the main pipe (1); when the rear end of the linear telescopic rod (58) extends, it pushes the lever (55) to deflect around the fixed hinge point (54) so ​​that the friction block (56) presses against the inner wall of the cylinder (51), and pushes the push rod (59) through the lever (55) to push the rear pressure plate (57) to deflect downward and press down. When the front end of the linear telescopic rod (58) extends, it pushes the front pressure plate (53) to move forward along the guide rail (52) and deflects downward and press down during the forward movement. The front pressure plate (53) and the rear pressure plate (57) together squeeze the slag material entering the cylinder (51) and make part of the slag material combine with the hollow metal mesh cylinder (62). The rotary feed head (61) has multiple backward-inclined bracing rods (63) that open outward at the rear to support it. One end of each bracing rod (63) is hinged to the rear of the rotary feed head (61), and the other end is hinged to a roller (64), which abuts against the inner wall of the main pipe (1). A compression spring (65) is connected between the bracing rod (63) and the rear of the rotary feed head (61) to push the bracing rod (63) outward. The linear telescopic rod (58) is a hydraulic rod or an electric push rod; the lever (55) is S-shaped; the rotary feed head (61) is provided with helical blades on its outer periphery, and the external power drives the rotary feed head (61) to rotate and feed along the main pipeline (1) through the hollow metal mesh cylinder (62).

2. The urban underground drainage pipeline system as described in claim 1, characterized in that: Multiple sets of forward pushing mechanisms (7) are evenly arranged at the rear end of the cylinder (51); the forward pushing mechanism (7) includes a friction wheel (71), a motor (72) integrated on one or both sides of the friction wheel (71) for driving the friction wheel (71), and a protective shell (73) for fixing and supporting the motor (72) and waterproofing the motor (72); a fixing frame (511) extends axially from the rear end of the cylinder (51); one end of a support rod (512) is hinged to the fixing frame (511), and the other end is fixedly connected to the protective shell (73); a tension spring (513) is connected between the middle of the support rod (512) and the rear end of the cylinder (51) so that the friction wheel (71) presses against the inner wall of the main pipe (1).

3. The urban underground drainage pipeline system as described in claim 2, characterized in that: The friction wheel (71) includes a rigid structure wheel (711) and a deformable tire body (712) tensioned and sleeved on the outer circumference of the rigid structure wheel (711); the deformable tire body (712) includes a high-friction rubber sealing sleeve (713) and an electrorheological fluid (714) filled in the high-friction rubber sealing sleeve (713); an electrode layer pair (715) is provided on the inner opposite surface of the high-friction rubber sealing sleeve (713); an external circuit applies an electric field to the electrorheological fluid (714) through the electrode layer pair (715) to change the viscosity and phase state of the electrorheological fluid (714).

4. The urban underground drainage pipeline system as described in claim 3, characterized in that: The slag removal method of the main pipeline slag removal device includes the following steps: ① First, the hollow metal mesh cylinder (62) is driven to rotate by external power, thereby driving the rotary feed head (61) to rotate and feed. During this process, the diagonal brace (63) expands outward so that the rotary feed head (61) feeds along the central axis of the main pipeline (1); ② Insert the cylinder (51) into the end of the main pipe (1). The friction wheel (71) of the forward pushing mechanism (7) is pressed tightly against the inner wall of the main pipe (1) under the action of the tension spring (513). The controller of the main pipe cleaning device controls the external circuit to quickly switch the strong electric field of the electrorheological fluid (714) through the electrode layer (715), so that the electrorheological fluid (714) can quickly and continuously switch between the solid and liquid states. While satisfying the torque transmission, the outer surface of the deformable body (712) can automatically adjust and adapt to the inner wall of the main pipe (1) in real time, maintaining the contact area and friction. At the same time, the motor (72) is controlled by remote control or according to the preset program controller to drive the friction wheel (71) to rotate, pushing the cylinder (51) forward. ③ During the forward movement of the cylinder (51), the slag in front of it is squeezed into the cylinder (51). The controller controls the extension of the telescopic rods at both ends of the linear telescopic rod (58), which respectively push the front pressure plate (53) forward and the lever (55) to flip. The flip of the lever (55) causes its upper end to push the friction block (56) outward. Since the friction block (56) was originally close to the cylinder (51), the friction block (56) quickly and tightly presses against the inner wall of the cylinder (51), thus forming friction support. During the flip of the lever (55), the push rod (59) pushes the rear pressure plate (57) to flip and squeeze in the direction of the cylinder (51) axis. Slag material; due to the clamping and fixing effect of the friction block (56), the extension of the telescopic rods at both ends of the linear telescopic rod (58) is converted into pushing the front pressure plate (53) forward. The front pressure plate (53) first moves forward under the guidance of the horizontal straight track (521), thereby causing the cylinder (51) to extend forward and wrap more slag material in front; then, while the front pressure plate (53) continues to move forward under the guidance of the arc-shaped bend (522), it deflects towards the axis of the cylinder (51) to squeeze the slag material, forming the effect of the front pressure plate (53) towards the central axis and backward, and the rear pressure plate (57) towards the central axis and forward, jointly squeezing the slag material in the cylinder (51); ④ Some of the slag is squeezed into the hollow metal mesh cylinder (62) and compacted. Since the slag contains various structures and fibers, a thicker layer of compacted slag will also be firmly attached and connected to the outer periphery of the hollow metal mesh cylinder (62). ⑤ After completion, the controller controls the telescopic rods at both ends of the linear telescopic rod (58) to shorten, so that the lever (55) and the front pressure plate (53) move back to the initial state in the opposite direction; the controller controls the motor (72) to start again so that the forward pushing mechanism (7) pushes the squeezing mechanism (5) forward by one distance; ⑥ Repeat steps ② to ⑤ to make the main pipeline slag removal device move forward continuously and squeeze and compact the slag into and around the hollow metal mesh cylinder; ⑦ After the cleaning is completed or comes to an end, the controller controls the motor (72) to continue to reverse, thereby pulling the extrusion mechanism (5) back to the outlet along the original path. If appropriate, it can also directly advance to the outlet in front of the main pipeline (1); ⑧ After the extrusion mechanism (5) and the forward pushing mechanism (7) are removed from the main pipe (1), there are only some free slag materials and tightly packed slag materials locked and attached to the hollow metal mesh cylinder (62) and its surroundings in the main pipe (1). At this time, pulling out the hollow metal mesh cylinder (62) will bring out more slag materials. The remaining slag materials can be cleaned by repeating the above steps or by flushing with water.

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