Prefabricated municipal engineering drainage pipeline and construction technology thereof

Abstract

The invention relates to a prefabricated municipal engineering drainage pipeline and a construction technology thereof, and belongs to the technical field of drainage pipelines, the prefabricated municipal engineering drainage pipeline comprises pipe bodies which can be in butt joint with each other, clamping blocks are fixed to the outer walls of the pipe bodies, bearing seats are arranged below the clamping blocks, thickening layers are arranged on the edges of the two ends of each pipe body, and a sealing groove is formed in the edge of one end of each pipe body; a sealing protruding block protruding outwards is fixed to the edge of the pipe body at the other end, the side wall of the sealing protruding block is attached to the inner wall of the sealing groove, a water inlet pipe is arranged at the bottom in the pipe body, one end of the water inlet pipe extends into the pipe body, the extending direction of the water inlet pipe is the same as the axis direction of the pipe body, and a sewage draining assembly is arranged on the water inlet pipe. Construction and assembly can be conveniently carried out, the sewage draining assembly is directly transported to a laying fixed point after being prefabricated, produced and formed in a factory, the construction time is shortened, and in the using process, the sewage draining assembly can assist in pipeline dredging, and waste impurities are prevented from being accumulated in a pipe body to cause pipe body blockage.

Description

Technical Field

[0001] The invention relates to the technical field of drainage pipes, and in particular to a prefabricated municipal engineering drainage pipe and a construction process thereof. Background Art

[0002] With the increasing acceleration of urbanization, the corresponding construction quality and construction efficiency requirements are also increasing. The use of prefabricated and assembled building construction can greatly shorten the construction period and has a high degree of environmental protection. The production and manufacturing are concentrated in the factory, and the production and manufacturing are unified, so the quality is guaranteed. In municipal engineering, drainage pipes play an important role, and their construction quality is closely related to the quality of life of residents.

[0003] For example, the Chinese invention patent document, with the announcement number CN111321790A, discloses a drainage pipe for municipal engineering, including an outer pipe, an inner pipe is arranged on the inner side of the outer pipe, a support block is fixedly connected to the inner wall of the outer pipe, a buffer plate is arranged at the bottom of the support block, a reinforcing ring is fixedly connected to the support block, a sleeve is slidably connected to the outer side of the reinforcing ring, a first spring is fixedly connected between one side of the sleeve and the support block, a plurality of first connecting blocks are fixedly connected to the inner wall of the outer pipe, a plurality of second connecting blocks are fixedly connected to the outer wall of the inner pipe, a connecting rod is arranged on one side of the first connecting block and the second connecting block, and a turbine blade is arranged on the inner wall of the inner pipe. The present invention can not only avoid the damage of the inner pipe caused by excessive external pressure by arranging the outer pipe on the outer side of the inner pipe of the drainage, but also strengthen the inner pipe, avoid the inner pipe from being broken from the inside due to excessive water pressure, and at the same time, by arranging the turbine blade, it can avoid the mud and sand in the sewage from adhering to the inner wall of the inner pipe to cause blockage.

[0004] For drainage pipes, sewage discharge capacity and anti-clogging ability are very important, and during long-term use, silt and debris will clog the pipes. The above-mentioned document records that by setting turbine blades, it is possible to prevent mud and sand in sewage from adhering to the inner wall of the inner pipe and causing blockage, but the turbine blades and related structures are relatively complex and occupy the internal space of the drainage pipe, which will affect the drainage effect. In particular, in municipal engineering projects, the pipe composition is complex and various debris are gathered in the drainage pipe. During long-term use, the structural components need to be inspected and maintained, which is very inconvenient to use. Summary of the invention

[0005] In order to overcome the technical defects of the prior art, the present invention provides a prefabricated and assembled municipal engineering drainage pipe and its construction process, which can be constructed and assembled faster and can reduce environmental pollution to the construction area. Moreover, the internal sewage discharge components can achieve better sewage discharge and anti-blocking effects while reducing the encroachment on the pipe body space.

[0006] The technical solution adopted by the present invention is: it includes a tube body that can be connected to each other, a clamping block is fixed on the outer wall of the tube body, the tube body and the clamping block are a fixed whole, both of which are prefabricated in the production factory, a bearing seat is provided under the clamping block, and the bearing seat is also prefabricated in the factory, and both end edges of the tube body are provided with a thickening layer. In order to enhance the structural strength of the edge of the tube body, the edge of the tube body is provided with a thickening layer that gradually extends outward and becomes thicker, a sealing groove is opened at one end edge of the tube body, and a sealing protrusion protruding outward is fixed to the edge of the tube body at the other end, and the The side wall of the sealing protrusion fits with the inner wall of the sealing groove, and the fitting part of the sealing protrusion and the sealing groove can effectively prevent liquid leakage. A water inlet pipe is provided at the bottom of the tube body, and the water inlet pipe needs to be connected to an external high-pressure water source. A high-pressure water source needs to be provided when needed. One end of the water inlet pipe extends into the tube body, and the extension direction of the water inlet pipe is the same as the axial direction of the tube body. A sewage discharge component is provided on the water inlet pipe, and the sewage discharge component can use a high-pressure water source to perform sewage treatment, and clean and remove the silt or debris deposited at the bottom of the drainage pipe.

[0007] Preferably, in order to further improve the sealing degree, the sealing groove is a semicircular groove, a sealing cavity is left between the outer surface of the sealing protrusion and the sealing groove, the adjacent pipe edges form a docking portion, a leakage portion is opened on the docking portion, the bottom of the leakage portion is connected to the sealing cavity, and the sealing cavity can allow the use of sealing filling material to fill and seal any gaps that may exist between adjacent pipe bodies after the pipe bodies are docked.

[0008] Preferably, in order to improve the stability of the tube body, a side bottom plate extending to one side is provided at the bottom of the bearing seat, one side of the bearing seat and the outer wall of the tube body are in contact with each other, and a clamping shoulder block is provided at the top of the bearing seat, a clamping notch is provided on the clamping shoulder block, and the clamping block is clamped in the clamping notch.

[0009] Preferably, in order to facilitate the removal of deposited impurities at the bottom of the pipe body, the sewage discharge assembly includes a driving device, a spiral pipe is provided on the driving device, and a spraying mechanism is provided at one end of the spiral pipe.

[0010] Preferably, in order to facilitate the use of water flow to drive the components to rotate, the driving device includes a rotating tube, one end of the rotating tube is rotatably clamped on the port of the water inlet pipe, guide vanes are fixed on the inner wall of the rotating tube, the guide vanes are twisted and deformed in the same direction, and a first support member is fixed to the bottom of the rotating tube, the first support member is used to support the rotating tube, and the rotating tube is rotatably clamped on the first support member.

[0011] Preferably, in order to facilitate the pushing of deposited impurities at the bottom of the tube body and avoid interfering with the flow of water, the spiral pipe fitting includes a connecting section and a spiral section, and connecting sections are provided at both ends of the spiral section. One end of the connecting section away from the spiral section coincides with the axis of the water inlet pipe, and one end of the connecting section is connected to the water inlet pipe.

[0012] Preferably, in order to facilitate the dilution of deposited impurities, a dredging treatment is performed at the bottom of the tube body, and the spraying mechanism includes a spray tube connected to the spiral tube fitting, a movable cylinder is slidably installed in the spray tube, a return spring is connected between the inner wall of the movable cylinder and the inner wall of one end of the spray tube, an outer nozzle is provided on the outer wall of the movable cylinder, an inner nozzle is provided on the spray tube, a second support member is fixed on the bottom of the tube body, and the spray tube is rotatably clamped on the second support member.

[0013] Preferably, in order to enable the movable cylinder to change its position smoothly, a supplementary column is slidably installed at one end of the spray tube, and retaining rings are fixed at both ends of the supplementary column. The spray tube and the supplementary column are sealed by a sealing ring, and the sealing ring is embedded in the spray tube. The inner nozzle is arranged corresponding to the outer nozzle and is offset to the spiral pipe fitting. A sealing ring is embedded on the outer wall of the movable cylinder.

[0014] A construction process for a prefabricated municipal engineering drainage pipe, S1: firstly, the location of the pipeline to be laid is laid out and confirmed, the scope involved in the construction is planned, and then the prefabricated pipe body and the bearing seat are transported to a suitable storage area; S2: Dig trenches in the planned area and lay gravel at the bottom of the trenches; S3: Before laying the pipeline, place the bearing seat at the bottom of the trench, then use external equipment to lift the pipe body, and after placing the pipe body on the bearing seat, assist in moving the bearing seat to directly dock and fit the pipe body; S4: Then, a fluid sealing material is poured into the sealing cavity. The sealing material is fluid asphalt or cement mortar. After the sealing material solidifies, the pipe body is filled with water to perform a sealing test, and the leaking part is sealed for the second time. Then, the water inlet pipe is connected to the external high-pressure water source. S5: Then backfill the trench and restore the ground.

[0015] The beneficial effects of the present invention are as follows: the present invention can be conveniently constructed and assembled, and can be directly transported to the laying site after being prefabricated and formed in the factory, thereby reducing the construction time; the bearing seat can enhance the stability of the pipe body, and at the same time can limit the position of the pipe body, so that the leaking part between the assembled pipe bodies is located at the top, which can facilitate the sealing process; and the present invention adopts a special sealing structure, firstly, the edges of the mutually clamped pipe bodies are butt-sealed, and then the external sealing material can be used for secondary sealing; and the operation is simple and convenient, and it only needs to slowly pour the fluid material used for sealing from the leaking part; Moreover, during use, the sewage discharge component can assist in clearing the pipeline, preventing waste and impurities from accumulating in the pipe body and causing blockage of the pipe body, and the discharge method is to introduce an external high-pressure water source, use the water flow to impact the deposited debris, and make these debris flow with the water flow, and when impacting the debris, the water flow can push the driving device so that the driving device can drive the spiral tube to rotate, and the spiral tube can twist in the pipe body, loosening the accumulated debris while using the twisted spiral tube to push the debris to move, thereby achieving a better sewage discharge effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall assembly of the present invention.

[0017] Figure 2 It is a schematic diagram of the tube structure of the present invention.

[0018] Figure 3 It is a schematic diagram of the structure of the bearing seat of the present invention.

[0019] Figure 4 It is a schematic diagram of the internal structure of the tube body of the present invention.

[0020] Figure 5 It is a schematic diagram of the structure of the sewage discharge component of the present invention.

[0021] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0022] Figure 7 It is a structural schematic diagram of the pipe body joint of the present invention.

[0023] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0024] Fig. 9 It is a schematic diagram of the internal structure of the spraying mechanism of the present invention.

[0025] Fig.10 It is a schematic diagram of the cross-sectional structure of the movable cylinder of the present invention.

[0026] Fig.11It is a schematic diagram of the spiral pipe structure of the present invention.

[0027] Fig.12 It is a schematic diagram of the construction process flow of the present invention.

[0028] Explanation of the accompanying drawings: In the figure: 1, pipe body; 101, clamping block; 102, sealing groove; 103, sealing protrusion; 104, first support member; 105, second support member; 2, bearing seat; 201, side bottom plate; 202, clamping shoulder block; 203, clamping notch; 3, water inlet pipe; 4, sewage discharge assembly; 401, driving device; 4011, rotating pipe; 4012, guide vane; 402, spiral pipe; 4021, connecting section; 4022, spiral section; 403, spraying mechanism; 4031, spraying pipe; 4032, movable cylinder; 4033, reset spring; 4034, supplementary column; 4035, sealing ring; 5, leakage part. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings: like Figure 1-Figure 12 shown. Example 1

[0030] The present embodiment provides a prefabricated municipal engineering drainage pipe, including a pipe body 1 that can be butted against each other, a clamping block 101 is fixed on the outer wall of the pipe body 1, the pipe body 1 and the clamping block 101 are a fixed whole, both of which are prefabricated in a production factory, a bearing seat 2 is provided below the clamping block 101, and the bearing seat 2 is also prefabricated in the factory, both ends of the pipe body 1 are provided with a thickening layer, in order to enhance the structural strength of the edge of the pipe body 1, the edge of the pipe body 1 is provided with a thickening layer that gradually extends outward and becomes thicker, a sealing groove 102 is provided on one end edge of the pipe body 1, and a sealing groove 102 protruding outward is fixed on the edge of the pipe body 1 at the other end The sealing protrusion 103, the side wall of the sealing protrusion 103 and the inner wall of the sealing groove 102 are fitted together, and the fitting part of the sealing protrusion 103 and the sealing groove 102 can effectively prevent liquid leakage. A water inlet pipe 3 is provided at the bottom of the tube body 1, and the water inlet pipe 3 needs to be connected to an external high-pressure water source, and a high-pressure water source needs to be provided when necessary. One end of the water inlet pipe 3 extends into the tube body 1, and the extension direction of the water inlet pipe 3 is the same as the axial direction of the tube body 1. A sewage discharge component 4 is provided on the water inlet pipe 3, and the sewage discharge component 4 can use a high-pressure water source to discharge sewage, and clean and remove the silt or debris deposited at the bottom of the drainage pipe.

[0031] The sealing groove 102 is a semicircular groove, and a sealing cavity is left between the outer surface of the sealing protrusion 103 and the sealing groove 102. The edges of adjacent pipes form a butt joint, and a leakage portion 5 is opened on the butt joint. The bottom of the leakage portion 5 is connected to the sealing cavity. The sealing cavity allows the use of sealing filling materials to fill and seal any gaps that may exist between adjacent pipe bodies 1 after the pipe bodies 1 are butt jointed, which can further improve the sealing degree.

[0032] The bottom of the bearing seat 2 is provided with a side bottom plate 201 extending to one side, one side of the bearing seat 2 and the outer wall of the pipe body 1 are attached to each other, and the top of the bearing seat 2 is provided with a clamping shoulder block 202, and the clamping shoulder block 202 is provided with a clamping notch 203, and the clamping block 101 is clamped in the clamping notch 203, which can improve the stability of the pipe body 1. The sewage discharge component 4 includes a driving device 401, and the driving device 401 is provided with a spiral pipe 402, and one end of the spiral pipe 402 is provided with a spraying mechanism 403, which can facilitate the removal of deposited impurities at the bottom of the pipe body 1.

[0033] The driving device 401 includes a rotating tube 4011, one end of which is rotatably connected to the port of the water inlet pipe 3, a guide vane 4012 is fixed on the inner wall of the rotating tube 4011, and the guide vanes 4012 are all twisted and deformed in the same direction, and a first support member 104 is fixed to the bottom of the rotating tube 4011, and the first support member 104 is used to support the rotating tube 4011. The rotating tube 4011 is rotatably connected to the first support member 104, so that it is convenient to use the water flow To drive the components to rotate, the spiral pipe 402 includes a connecting section 4021 and a spiral section 4022. Both ends of the spiral section 4022 are provided with connecting sections 4021. The axis of the connecting section 4021 away from the end of the spiral section 4022 coincides with the water inlet pipe 3, and one end of the connecting section 4021 is connected to the water inlet pipe 3, so that it is easy to push the deposited impurities at the bottom of the pipe body 1 while avoiding interference with the flow of water. The spraying mechanism 403 includes a spray pipe connected to the spiral pipe 402. 4031, a movable cylinder 4032 is slidably installed in the spray tube 4031, a return spring 4033 is connected between the inner wall of the movable cylinder 4032 and the inner wall of one end of the spray tube 4031, an outer nozzle is provided on the outer wall of the movable cylinder 4032, an inner nozzle is provided on the spray tube 4031, a second support 105 is fixed on the bottom of the tube body 1, and the spray tube 4031 is rotatably connected to the second support 105, so that it is convenient to dilute the deposited impurities and carry out the spraying at the bottom of the tube body 1. After the dredging treatment, a supplementary column 4034 is slidably installed at one end of the spray tube 4031, and retaining rings are fixed at both ends of the supplementary column 4034. The spray tube 4031 and the supplementary column 4034 are sealed by a sealing ring, and the sealing ring is embedded in the spray tube 4031. The inner nozzles are arranged corresponding to the outer nozzles, and both are offset to the spiral pipe 402. A sealing ring 4035 is embedded on the outer wall of the movable cylinder 4032, so that the movable cylinder 4032 can change its position smoothly.

[0034] When in use, an external high-pressure water source enters the water inlet pipe 3, and then under the pressure of the water flow, the movable cylinder 4032 can be pushed to compress the return spring 4033, and then the inner nozzle is moved to the outer nozzle, and then the water flow can be sprayed out to wash away the deposited debris. In order to avoid misalignment between the inner nozzle and the outer nozzle, the width range of the outer nozzle can be increased to compensate for the torsional deviation of the movable cylinder 4032 itself. Since the movable cylinder 4032 moves and compresses the space between it and the spray tube 4031, the supplementary column 4034 is pushed away from the spray tube 4031, thereby making up for the compressed space and allowing the movable cylinder 4032 to move smoothly.

[0035] The construction process is as follows: first, the position of the pipeline to be laid is confirmed by laying out the lines, and the scope of the construction is planned. Then, the prefabricated pipe body 1 and the bearing seat 2 are transported to a suitable storage area, a trench is excavated in the planned area, and sand and gravel are laid at the bottom of the trench. Before laying the pipeline, the bearing seat 2 is placed at the bottom of the trench, and then the pipe body 1 is hoisted using external equipment. After the pipe body 1 is placed on the bearing seat 2, the bearing seat 2 is assisted to move the pipe body 1 directly to dock and fit, and then the fluid sealing material is poured into the sealing cavity. The sealing material is fluid asphalt or cement mortar. After the sealing material solidifies, the pipe body 1 is filled with water for a sealing test, and the leaking part is sealed for the second time. Then, the water inlet pipe 3 is connected to the external high-pressure water source, and then the trench is backfilled with earth and the ground is repaired and restored.

[0036] The present invention can be conveniently constructed and assembled. After being prefabricated and formed in the factory, it can be directly transported to the laying site, which reduces the construction time. The bearing seat 2 can enhance the stability of the pipe body 1 and limit the position of the pipe body 1, so that the leakage part 5 between the assembled pipe bodies 1 is located at the top, which can facilitate the sealing process. The present invention adopts a special sealing structure. First, the edges of the pipe bodies 1 that are clamped to each other are butt-sealed, and then the external sealing material can be used for secondary sealing. The structures at both ends of the pipe body 1 are regular, which is conducive to prefabrication in the factory, and the operation is simple and convenient. It only needs to seal the pipe body 1. The fluid material used for sealing can be slowly poured into the leaking part 5; and during use, the sewage discharge component 4 can assist in clearing the pipeline to prevent waste impurities from accumulating in the pipe body 1 and causing blockage of the pipe body 1, and the discharge method is to introduce an external high-pressure water source, use the water flow to impact the deposited debris, and make these debris flow with the water flow, and when impacting the debris, the water flow can push the driving device 401 so that the driving device 401 can drive the spiral tube to rotate, and the spiral tube can twist in the pipe body 1, and the accumulated debris can be loosened while the twisted spiral tube can be used to push the debris to move, thereby achieving a better sewage discharge effect.

[0037] During construction, the clamping blocks 101 on both sides of the pipe body 1 can be used for hoisting and fixing. When the pipe body 1 is clamped on the supporting seat 2 at a close distance, it can be fixed separately, and then the pipe body 1 is connected to the supporting seat 2 for pushing. If it is necessary to reduce the hoisting steps, a through hole can be directly opened on the clamping block 101 as a hoisting and fixing part. In this way, the pipe body 1 can be directly hoisted and installed in place in a single time, and can assist in the translation of the pipe body 1 and the supporting seat 2. Example 2

[0038] This embodiment changes the structure of the sewage discharge component 4 on the basis of the embodiment 1. A prefabricated and assembled municipal engineering drainage pipe includes a pipe body 1 that can be connected to each other. A clamping block 101 is fixed on the outer wall of the pipe body 1. The pipe body 1 and the clamping block 101 are a fixed whole, and are prefabricated in a production factory. A bearing seat 2 is provided under the clamping block 101. The bearing seat 2 is also prefabricated in the factory. Thickening layers are provided at the edges of both ends of the pipe body 1. In order to enhance the structural strength of the edge of the pipe body 1, the edge of the pipe body 1 is provided with a thickening layer that gradually extends outward and becomes thicker. A sealing groove 102 is provided at the edge of one end of the pipe body 1, and the edge of the pipe body 1 at the other end A sealing protrusion 103 protruding outward is fixed, and the side wall of the sealing protrusion 103 fits with the inner wall of the sealing groove 102. The fitting part of the sealing protrusion 103 and the sealing groove 102 can effectively prevent liquid leakage. A water inlet pipe 3 is provided at the bottom of the tube body 1. The water inlet pipe 3 needs to be connected to an external high-pressure water source, and a high-pressure water source needs to be provided when necessary. One end of the water inlet pipe 3 extends into the tube body 1, and the extension direction of the water inlet pipe 3 is the same as the axial direction of the tube body 1. A sewage discharge component 4 is provided on the water inlet pipe 3. The sewage discharge component 4 can use a high-pressure water source to discharge sewage and clean and remove silt or debris deposited at the bottom of the drainage pipe.

[0039] The sealing groove 102 is a semicircular groove, and a sealing cavity is left between the outer surface of the sealing protrusion 103 and the sealing groove 102. The edges of adjacent pipes form a butt joint, and a leakage portion 5 is opened on the butt joint. The bottom of the leakage portion 5 is connected to the sealing cavity. The sealing cavity allows the use of sealing filling materials to fill and seal any gaps that may exist between adjacent pipe bodies 1 after the pipe bodies 1 are butt jointed, which can further improve the sealing degree.

[0040] The bottom of the supporting seat 2 is provided with a side bottom plate 201 extending to one side, one side of the supporting seat 2 and the outer wall of the tube body 1 are in contact with each other, and the top of the supporting seat 2 is provided with a clamping shoulder block 202, and the clamping shoulder block 202 is provided with a clamping notch 203, and the clamping block 101 is clamped in the clamping notch 203, which can improve the stability of the tube body 1.

[0041] The sewage discharge assembly 4 includes a driving device 401, on which a spiral pipe 402 is provided. The driving device 401 includes a rotating tube 4011, one end of which is rotatably connected to the port of the water inlet pipe 3, and a guide vane 4012 is fixed to the inner wall of the rotating tube 4011. The guide vanes 4012 are all twisted and deformed in the same direction. A first support member 104 is fixed to the bottom of the rotating tube 4011, and the first support member 104 is used to support the rotating tube 4011. The rotating tube 4011 is rotatably connected to the first support member 104, so that it is convenient to use water flow to drive the components to rotate. The spiral pipe 402 includes a rotating tube 4011, and a rotating tube 4011 is connected to the rotating tube 4011. It includes a connecting section 4021 and a spiral section 4022, both ends of the spiral section 4022 are provided with connecting sections 4021, the axis of the connecting section 4021 away from the spiral section 4022 coincides with the water inlet pipe 3, an ejection hole is opened on the outer wall of the spiral section 4022, and one end of the connecting section 4021 is connected to the water inlet pipe 3, so that it is convenient to push the deposited impurities at the bottom of the tube body 1 while avoiding interfering with the flow of water, a second support member 105 is fixed on the bottom of the tube body 1, and one end of the connecting section 4021 away from the water inlet pipe 3 is clamped on the second support member 105, and a filter is provided in the water inlet pipe 3, which is used to prevent impurities from flowing back.

[0042] In this embodiment, a spray hole is opened on the spiral pipe 402, and a high-pressure water flow can be directly sprayed out during dirt removal. At the same time, the liquid source of the water inlet pipe 3 is not limited to purified water. When a stable liquid source can be guaranteed, the filter in the water inlet pipe 3 can be removed so that the water inlet pipe 3 is always filled with high-pressure liquid that can flow into the pipe body 1.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A prefabricated municipal engineering drainage pipe, comprising a pipe body (1) that can be butted together, a clamping block (101) being fixed on the outer wall of the pipe body (1), a bearing seat (2) being provided below the clamping block (101), and thickening layers being provided at both end edges of the pipe body (1), characterized in that: A sealing groove (102) is provided at the edge of one end of the tube body (1), and a sealing protrusion (103) protruding outward is fixed to the edge of the tube body (1) at the other end, the side wall of the sealing protrusion (103) is in contact with the inner wall of the sealing groove (102), a water inlet pipe (3) is provided at the bottom of the tube body (1), one end of the water inlet pipe (3) extends into the tube body (1), and the extension direction of the water inlet pipe (3) is the same as the axial direction of the tube body (1), and a sewage discharge assembly (4) is provided on the water inlet pipe (3).

2. The prefabricated municipal engineering drainage pipe according to claim 1 is characterized in that: The sealing groove (102) is a semicircular groove, a sealing cavity is left between the outer surface of the sealing protrusion (103) and the sealing groove (102), the adjacent pipe edges form a butt joint, a leaking portion (5) is provided on the butt joint, and the bottom of the leaking portion (5) is connected to the sealing cavity.

3. The prefabricated municipal engineering drainage pipe according to claim 1 is characterized in that: The bottom of the bearing seat (2) is provided with a side bottom plate (201) extending to one side, one side of the bearing seat (2) and the outer wall of the tube body (1) are in contact with each other, and the top of the bearing seat (2) is provided with a clamping shoulder block (202), and the clamping shoulder block (202) is provided with a clamping notch (203), and the clamping block (101) is clamped in the clamping notch (203).

4. The prefabricated municipal engineering drainage pipe according to claim 1 is characterized in that: The sewage discharge assembly (4) comprises a driving device (401), a spiral pipe (402) is provided on the driving device (401), and a spraying mechanism (403) is provided at one end of the spiral pipe (402).

5. The prefabricated municipal engineering drainage pipe according to claim 4 is characterized in that: The driving device (401) comprises a rotating tube (4011), one end of the rotating tube (4011) being rotatably clamped on a port of the water inlet pipe (3), a guide vane (4012) being fixed on the inner wall of the rotating tube (4011), a first support member (104) being fixed on the bottom of the rotating tube (4011), and the rotating tube (4011) being rotatably clamped on the first support member (104).

6. The prefabricated municipal engineering drainage pipe according to claim 5 is characterized by: The spiral pipe member (402) comprises a connecting section (4021) and a spiral section (4022), both ends of the spiral section (4022) are provided with connecting sections (4021), one end of the connecting section (4021) away from the spiral section (4022) coincides with the axis of the water inlet pipe (3), and one end of the connecting section (4021) is connected to the water inlet pipe (3).

7. The prefabricated municipal engineering drainage pipe according to claim 6, characterized in that: The spraying mechanism (403) comprises a spray pipe (4031) connected to the spiral pipe (402), a movable cylinder (4032) being slidably mounted inside the spray pipe (4031), a return spring (4033) being connected between the inner wall of the movable cylinder (4032) and the inner wall of one end of the spray pipe (4031), an outer nozzle being provided on the outer wall of the movable cylinder (4032), an inner nozzle being provided on the spray pipe (4031), a second support member (105) being fixed on the bottom of the pipe body (1), and the spray pipe (4031) being rotatably clamped on the second support member (105).

8. The prefabricated municipal engineering drainage pipe according to claim 7 is characterized in that: A supplementary column (4034) is slidably mounted on one end of the spray tube (4031), and retaining rings are fixed at both ends of the supplementary column (4034). The spray tube (4031) and the supplementary column (4034) are sealed by a sealing ring, and the sealing ring is embedded in the spray tube (4031). The inner nozzles are arranged corresponding to the outer nozzles and are offset toward the spiral tube (402). A sealing ring (4035) is embedded on the outer wall of the movable cylinder (4032).

9. A construction process for a prefabricated municipal engineering drainage pipe, based on any one of claims 1 to 8, characterized in that: S1: First, the location of the pipeline to be laid is laid out and confirmed, the scope of construction is planned, and then the prefabricated pipe body (1) and the bearing seat (2) are transported to a suitable storage area; S2: Dig trenches in the planned area and lay gravel at the bottom of the trenches; S3: Before laying the pipeline, the bearing seat (2) is first placed at the bottom of the trench, and then the pipe body (1) is hoisted using external equipment. After the pipe body (1) is placed on the bearing seat (2), the bearing seat (2) is assisted in being moved to directly butt-join the pipe body (1); S4: Then, a fluid sealing material is poured into the sealing cavity. The sealing material is fluid asphalt or cement mortar. After the sealing material solidifies, the pipe body (1) is filled with water to perform a sealing test, and the leaking part is sealed for a second time. Then, the water inlet pipe (3) is connected to an external high-pressure water source. S5: Then backfill the trench and restore the ground.

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