CN221004258U - Anti-sedimentation structure of rear-connection branch pipe of thin-wall plastic well - Google Patents
Anti-sedimentation structure of rear-connection branch pipe of thin-wall plastic well Download PDFInfo
- Publication number
- CN221004258U CN221004258U CN202322605126.9U CN202322605126U CN221004258U CN 221004258 U CN221004258 U CN 221004258U CN 202322605126 U CN202322605126 U CN 202322605126U CN 221004258 U CN221004258 U CN 221004258U
- Authority
- CN
- China
- Prior art keywords
- branch pipe
- wall
- well
- sleeve
- thin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 32
- 229920003023 plastic Polymers 0.000 title claims abstract description 32
- 238000004062 sedimentation Methods 0.000 title claims abstract description 18
- 238000007689 inspection Methods 0.000 claims abstract description 58
- 239000003566 sealing material Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 23
- 238000005187 foaming Methods 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 238000010276 construction Methods 0.000 abstract description 13
- 238000005096 rolling process Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 9
- 239000010865 sewage Substances 0.000 description 5
- 239000002071 nanotube Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The utility model relates to an anti-sedimentation structure of a rear-connection branch pipe of a thin-wall plastic well, which solves the problems that the wall of a plastic inspection well is thin, the branch pipe of the inspection well, particularly the connecting section of the rear-connection branch pipe and the well wall is very short, and when sedimentation occurs or dislocation occurs easily under the rolling vibration action of a past vehicle, leakage is caused. The device comprises a manhole made of plastic materials, wherein a hoop is clamped outside a shaft wall of the manhole, a sleeve is arranged outwards on one side of the hoop, a jack is formed by fusing the shaft wall of the manhole and a sleeve pair Ji Re, a branch pipe is arranged in the sleeve in an inserted mode, the end portion of the branch pipe penetrates into the manhole from the jack, and sealing materials are filled between the outer wall of the branch pipe and the inner wall of the sleeve. The utility model adopts the anchor ear with the sleeve to position the branch pipe, the height of the branch pipe connected with the inspection well can be flexibly selected, the branch pipe is suitable for the access ports with various elevations, the construction is convenient and fast, the water construction can be carried out when the access port is higher than the water level in the inspection well, the sleeve and the branch pipe are provided with enough connecting sections, and the anti-seismic and anti-sedimentation capacity of the branch pipe is improved.
Description
Technical Field
The utility model belongs to the field of municipal water supply and drainage, relates to an inspection well connecting structure, and particularly relates to an anti-sedimentation structure of a rear connecting branch pipe of a thin-wall plastic well.
Background
With the increasing of the protection of people to the environment, various policies are put out of the country in order to use plastic wells. The plastic well is promoted from 2004 to 2021, reinforced concrete well or finished well is used instead, and then the well is forbidden to use in 2022. The plastic inspection well has the advantages of quick construction, good tightness and convenient transportation, is widely used in municipal pipe network construction, and particularly occupies very large proportion in the outdoor matching of communities and rural sewage interception nano-tube projects.
At present, the traditional connection mode of a plastic inspection well and a pipeline is mainly connected with the pipeline through a well seat with a water inlet pipe and a water outlet pipe, or a branch pipe is welded on a well wall through punching and penetrating a branch pipe on the well wall, or the branch pipe is connected with the pipeline through a branch pipe connecting pipe fitting. Because the well wall of the plastic inspection well is thin, the connecting section at the intersection of the branch pipe and the well wall is short, once sedimentation occurs, or dislocation easily occurs under the rolling vibration action of a past vehicle, so that leakage is caused. Particularly, the branch pipes connected in the back in the projects such as the sewage interception nano-tubes are additionally arranged and connected on the well wall in the later period, so that the construction environment is complex, the construction conditions are poor, the pipeline support foundation is uneven, and the dislocation leakage of the branch pipes and the inspection well is easier to occur.
The well seat part of the plastic inspection well is mostly formed by one-time injection molding, and the connection for changing the pipe diameter and the angle is realized by fittings such as a reducing joint, a variable angle joint, a rubber sealing ring and the like. The well base is prefabricated before delivery, can be straight-through, can be provided with angles, can be provided with water inlets in multiple directions and multiple angles, has the advantage of good sealing performance, but is usually prefabricated in advance, and the pipe diameter, elevation and direction of a water inlet and outlet pipe of a pipeline are required to be customized again when the on-site pipe connection condition and the design condition have larger deviation.
The connection mode of the perforation of the well wall and the welding of the branch pipe is that firstly, a pipe with the diameter not less than 500mm is penetrated into the well wall, dirt on the welding surface is removed, the welding rod made of the same material is adopted to weld along the inner circle Zhou Shuangmian and the outer circle Zhou Shuangmian of the well wall, the welding seam is free from lack of welding, cracks and is smooth and flat, and finally, the redundant pipe length in the well is cut off. The well wall punching and branch pipe welding connection mode is adopted, the access elevation, the pipe diameter and the direction of the branch pipe can be relatively flexible, but the pipe and the inspection well are required to be made of the same material or similar materials, the inspection well is required to be emptied and cleaned, the welding requirement is very high, and the sealing performance of the inspection well can be directly influenced by the welding quality.
The branch pipe connecting pipe fitting is a fitting for connecting an inspection well and a branch pipe, and a common form is a shaft movable joint and a saddle joint. The shaft union is first opened according to the pipe diameter and the access position of the branch pipe, then the shaft union is installed on the shaft, and then the branch pipe is accessed. The pipe diameter and the installation angle of the branch pipe are flexible, and the defect that the movable joint of the shaft needs to be sleeved from the top is that the branch pipe can only be installed from bottom to top and is not suitable for the installation of a rear branch pipe. The saddle joint connection mode is that firstly, holes are formed according to the pipe diameter and the access position of the branch pipe, the saddle branch pipe joint is installed according to the sequence of the inner sleeve, the sealing ring, the outer sleeve, the nut and the locking nut, finally, the pipe is inserted into the saddle joint, whether the position of the rubber ring is correct or not is checked, and then the nut is screwed. The branch pipe access point of the connection mode can be flexibly selected, is suitable for being connected with the branch pipe from various angles, has the defects that the inspection well needs to be emptied and cleaned during connection, the nut and the nut are high in accuracy, the wall thickness of the access pipe has certain accuracy requirements, and the joint is easy to be disconnected when the pipeline and the well are unevenly settled due to the small contact surface with the well wall connection section, so that the pipeline is leaked.
Disclosure of utility model
The utility model mainly solves the problems that the wall of a plastic inspection well is thin, particularly the connecting section of a branch pipe of the inspection well, particularly a branch pipe connected with a well wall is short, and when sedimentation occurs or dislocation is easy to occur under the rolling vibration action of a past vehicle, leakage is caused, and provides an anti-sedimentation structure of the branch pipe connected with the inspection well in the rear of the thin-wall plastic well, which is suitable for the branch pipes connected with various angles, various elevations and various pipe diameters, is suitable for various pipes, has better sealing performance and uneven sedimentation resistance, can carry water operation, and is particularly suitable for old well reconstruction projects such as sewage interception nano pipes.
The aim of the utility model is mainly achieved by the following scheme: the utility model provides a thin wall plastic well back connects branch pipe anti-sedimentation structure, includes the inspection shaft of plastics material, the wall of a well outside of inspection shaft is embraced and is pressed from both sides the staple bolt, and one side of staple bolt outwards is equipped with the sleeve pipe, and the wall of a well of inspection shaft has been offered the jack with sleeve pipe pair Ji Re melting, and the sleeve pipe interpolation is equipped with the branch pipe, and the branch pipe tip penetrates to the inspection shaft in from the jack, fills sealing material between branch pipe outer wall and the sleeve pipe inner wall.
The structure is particularly suitable for being used when the sewage interception nano tube of the old community is reformed, the existing drainage pipeline is fully utilized when the sewage interception nano tube of the old community is reformed, an inspection well made of plastic materials is arranged on a main pipe of the existing drainage pipeline, one or more existing branch pipes are connected to the well wall of the inspection well, if new branch pipes are additionally arranged on the side wall of the existing inspection well, the branch pipes need to have a certain inclination due to gravity flow in the branch pipes, and therefore, elevation of each branch pipe connected to the inspection well is not fixed according to different conveying distances of the branch pipes, but is determined according to actual topography. The existing new branch pipe is connected, after the inspection well is emptied, the branch pipe is inserted into the inspection well for fusion welding, so that the joint cannot carry out construction with water, is high in construction difficulty, is insufficient in sedimentation resistance, and is easy to generate dislocation. This structure adopts the sheathed tube staple bolt to fix a position new branch pipe, and the high flexible choice of new branch pipe access inspection shaft, the access mouth of adaptation various elevations, and the construction is convenient, when the access mouth is higher than the inspection shaft water level, can take the water construction, and sleeve pipe and branch pipe have enough long linking section, improves the antidetonation and the anti subsidence ability of branch pipe.
Preferably, the anchor ear comprises two half hoops of semicircle rings, and two ends of the two half hoops are respectively locked through locking bolts. The hoop can be replaced by other existing modes such as hinge type and hinge type, and the locking mode can be replaced by the existing spanner buckle mode, so that the same effect is achieved.
Preferably, one or both of the half hoops are provided with a sleeve connecting the branch pipes.
Preferably, the number of the sleeves on the same half hoop is not more than two, and the circumferential interval between adjacent sleeves is not less than 30 degrees.
Preferably, a rubber sealing gasket is arranged between the anchor ear and the well wall of the inspection well. The rubber sealing gasket can provide enough locking and clinging force between the anchor ear and the inspection well, so that slipping and loosening are avoided.
Preferably, the rubber sealing gasket is a 360-degree C-shaped roll or two 180-degree C-shaped rolls, and the circumferential distance between the fracture of the rubber sealing gasket and the branch pipe access point is not less than 30 degrees. The rubber sealing gasket can be formed by cutting a continuous rubber sheet, and is wrapped on a well wall and then compressed by adopting a hoop.
Preferably, the inner wall of the sleeve near one end of the well wall is provided with an inverted tooth type rubber ring, the inverted tooth type rubber ring is provided with more than two inverted teeth, tooth tops of the inverted teeth are obliquely arranged towards one side of the well wall, and tooth tops of the inverted teeth are abutted against the outer wall of the branch pipe. The inverted tooth type rubber ring can be used for unidirectional insertion of the branch pipe and difficult extraction when the sealing effect is improved, and the branch pipe is prevented from loosening.
Preferably, the length of the sleeve is 0.8 to 3 times of the outer diameter of the branch pipe.
Preferably, the filling sealing material adopts foaming waterproof sealant.
Preferably, the anchor ear is made of cast iron or stainless steel.
The utility model adopts the anchor ear with the sleeve to position the branch pipe, the height of the branch pipe connected with the inspection well can be flexibly selected, the branch pipe is suitable for the access ports with various elevations, the construction is convenient and fast, the water construction can be carried out when the access port is higher than the water level in the inspection well, the sleeve and the branch pipe are provided with enough connecting sections, and the anti-seismic and anti-sedimentation capacity of the branch pipe is improved.
Drawings
The utility model is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic view of a structure of the present utility model.
FIG. 2 is a schematic diagram of the structure of A-A of FIG. 1 according to the present utility model.
Fig. 3 is a schematic diagram of a manifold access according to the present utility model.
Fig. 4 is a single leg access schematic of the present utility model.
Fig. 5 is a schematic diagram of the structure of fig. 4 at B in accordance with the present utility model.
Illustration of: 1. inspection shaft, 2, drainage is responsible for, 3, current branch pipe, 4, branch pipe, 5, staple bolt, 6, sleeve pipe, 7, rubber seal gasket, 8, inverted tooth formula rubber circle, 9, sealing material.
Detailed Description
The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.
Example 1: a sedimentation-resistant structure of a rear connecting branch pipe of a thin-wall plastic well is shown in figures 1 and 2. The structure comprises an inspection well 1 made of plastic materials, and drainage main pipes 2 are arranged on two sides of the lower part of the inspection well. The upper part of the inspection well is provided with an existing branch pipe 3, and the access elevation of the newly accessed branch pipe 4 is lower than that of the existing branch pipe 3. This structure is embraced and is pressed from both sides staple bolt 5 that have stainless steel material in the wall of a well outside of inspection shaft 1 of new access branch pipe 4 positions, and the staple bolt includes the half hoop of two semicircle rings, and the both ends of two half hoops are locked through the lock bolt respectively. One of them half hoop is equipped with sleeve pipe 6 outwards, and jack has been offered with sleeve pipe 6 pair Ji Re to melting to inspection shaft 1 wall of a well, and the sleeve pipe interpolation is equipped with branch pipe 4, and branch pipe 4 tip penetrates to inspection shaft 1 in from the jack, packs sealing material 9 between branch pipe outer wall and the sleeve pipe inner wall, and sealing material selects to use foaming waterproof sealant. A rubber sealing gasket 7 is arranged between the anchor ear 5 and the well wall of the inspection well 1. The rubber sealing gasket is a 360-degree C-shaped roll, and is formed by cutting a sheet-shaped or rolled rubber sheet according to the actual size, and the circumferential distance between the fracture of the rubber sealing gasket 7 and the branch pipe access point is not less than 30 degrees. The inner wall of the sleeve 6 near one end of the well wall is provided with an inverted tooth type rubber ring 8, the inverted tooth type rubber ring 8 is provided with more than two inverted teeth, tooth tops of the inverted teeth are obliquely arranged towards one side of the well wall, and tooth tops of the inverted teeth are abutted against the outer wall of the branch pipe 4. The length of the sleeve 6 is 1.5 times the outer diameter of the branch pipe 4.
In this case, the access elevation of the new access branch pipe is lower than that of the existing branch pipe, so that the sleeve structure in the background art cannot avoid the use of the existing branch pipe. Therefore, the structure adopts the anchor ear to flexibly control the access position, the angle of the sleeve can be adjusted by the anchor ear to be clamped into the angle, the sleeve position can be used for positioning the well wall of the inspection well after the position of the sleeve is determined to form an insertion hole, then the insertion branch pipe is inserted until the branch pipe extends into the inspection well, and finally the foaming waterproof sealant is used for filling joints. The structure has good anti-seismic and anti-sedimentation performance, can be used for construction with water, and is convenient and quick.
Example 2: a sedimentation-resistant structure of a rear connecting branch pipe of a thin-wall plastic well is shown in figure 3. In this example, two branch pipes 4 are newly connected in different directions at the same elevation. This structure is embraced and is pressed from both sides staple bolt 5 that have stainless steel material in the wall of a well outside of inspection shaft 1 of new access branch pipe 4 height, and the staple bolt includes the half hoop of two semicircle rings, and the both ends of two half hoops are locked through the lock bolt respectively. The two half hoops of staple bolt set up sleeve pipe 6 respectively, and two sleeve pipe 6 contained angles are confirmed according to two branch pipe 4 contained angles, and jack has been offered to inspection shaft 1 wall of a well and sleeve pipe 6 pair Ji Re melting, and the sleeve pipe interpolation is equipped with branch pipe 4, and branch pipe 4 tip penetrates to in the inspection shaft 1 from the jack, packs sealing material 9 between branch pipe outer wall and the sleeve pipe inner wall, and sealing material selects for use foaming waterproof sealant. A rubber sealing gasket 7 is arranged between the anchor ear 5 and the well wall of the inspection well 1. The rubber sealing gasket is a 360-degree C-shaped roll, and is formed by cutting a sheet-shaped or rolled rubber sheet according to the actual size, and the circumferential distance between the fracture of the rubber sealing gasket 7 and the branch pipe access point is not less than 30 degrees. The inner wall of the sleeve 6 near one end of the well wall is provided with an inverted tooth type rubber ring 8, the inverted tooth type rubber ring 8 is provided with more than two inverted teeth, tooth tops of the inverted teeth are obliquely arranged towards one side of the well wall, and tooth tops of the inverted teeth are abutted against the outer wall of the branch pipe 4. The length of the sleeve 6 is 1.5 times the outer diameter of the branch pipe 4.
Example 3: a sedimentation-resistant structure of a rear connecting branch pipe of a thin-wall plastic well is shown in figures 4 and 5. In this example, only one branch pipe 4 is newly connected at the same elevation. This structure is embraced and is pressed from both sides staple bolt 5 that have stainless steel material in the wall of a well outside of inspection shaft 1 of new access branch pipe 4 height, and the staple bolt includes the half hoop of two semicircle rings, and the both ends of two half hoops are locked through the lock bolt respectively. One of them half hoop sets up sleeve pipe 6, and jack has been offered with sleeve pipe 6 pair Ji Re to the wall of a well of inspection shaft 1, and the sleeve pipe interpolation is equipped with branch pipe 4, and branch pipe 4 tip penetrates to in the inspection shaft 1 from the jack, packs sealing material 9 between branch pipe outer wall and the sleeve pipe inner wall, and sealing material selects to use foaming waterproof sealant. A rubber sealing gasket 7 is arranged between the anchor ear 5 and the well wall of the inspection well 1. The rubber sealing gasket is a 360-degree C-shaped roll, and is formed by cutting a sheet-shaped or rolled rubber sheet according to the actual size, and the circumferential distance between the fracture of the rubber sealing gasket 7 and the branch pipe access point is not less than 30 degrees. The inner wall of the sleeve 6 near one end of the well wall is provided with an inverted tooth type rubber ring 8, the inverted tooth type rubber ring 8 is provided with more than two inverted teeth, tooth tops of the inverted teeth are obliquely arranged towards one side of the well wall, and tooth tops of the inverted teeth are abutted against the outer wall of the branch pipe 4. The length of the sleeve 6 is 1.5 times the outer diameter of the branch pipe 4. The structure of the plugging of the sleeve and the branch pipe according to embodiment 1 can also refer to the structure of fig. 5.
Embodiment 2 and embodiment 3 can be used in one manhole at the same time, and a plurality of hoops are arranged at different elevations.
Claims (10)
1. The utility model provides a thin wall plastic well rear connection branch pipe anti-sedimentation structure, includes the inspection shaft of plastics material, its characterized in that: the inspection shaft is characterized in that the outer side of the well wall of the inspection shaft is clamped with a hoop, one side of the hoop is provided with a sleeve outwards, the well wall of the inspection shaft and the sleeve pair Ji Re are melted and provided with jacks, a branch pipe is inserted into the sleeve, the end part of the branch pipe penetrates into the inspection shaft from the jacks, and sealing materials are filled between the outer wall of the branch pipe and the inner wall of the sleeve.
2. The thin-walled plastic well rear-end branch anti-settling structure according to claim 1, wherein: the anchor ear comprises two half hoops of semicircle ring, and the both ends of two half hoops are locked through the locking bolt respectively.
3. The thin-walled plastic well rear-end branch anti-settling structure according to claim 2, wherein: one of the half hoops is provided with a sleeve connecting the branch pipes or both the half hoops are provided with a sleeve connecting the branch pipes.
4. A thin-walled plastic well rear-end branch anti-settling structure according to claim 2 or 3, characterized in that: the number of the sleeves on the same half hoop is not more than two, and the circumferential interval between adjacent sleeves is not less than 30 degrees.
5. A thin-walled plastic well rear-end branch anti-settling structure according to claim 1 or 2, wherein: and a rubber sealing gasket is arranged between the anchor ear and the well wall of the inspection well.
6. The anti-settling structure of a rear connecting branch pipe of a thin-wall plastic well according to claim 5, wherein: the rubber sealing gasket is a 360-degree C-shaped coil or two 180-degree C-shaped coils, and the circumferential distance between a fracture of the rubber sealing gasket and an access point of the branch pipe is not less than 30 degrees.
7. A thin-walled plastic well rear-end branch anti-settling structure according to claim 1 or 2, wherein: the inner wall that the sleeve pipe leaned on wall of a well one end is equipped with the inverted tooth formula rubber circle, and inverted tooth formula rubber circle is provided with the pawl of more than two, the tooth top of pawl is towards wall of a well one side slope setting, and the tooth top of pawl is supported and is leaned on the branch pipe outer wall.
8. A thin-walled plastic well rear-end branch anti-settling structure according to claim 1 or 2, wherein: the length of the sleeve is 0.8-3 times of the outer diameter of the branch pipe.
9. A thin-walled plastic well rear-end branch anti-settling structure according to claim 1 or 2, wherein: the filling sealing material adopts foaming waterproof sealant.
10. A thin-walled plastic well rear-end branch anti-settling structure according to claim 1 or 2, wherein: the anchor ear is made of cast iron or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322605126.9U CN221004258U (en) | 2023-09-25 | 2023-09-25 | Anti-sedimentation structure of rear-connection branch pipe of thin-wall plastic well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322605126.9U CN221004258U (en) | 2023-09-25 | 2023-09-25 | Anti-sedimentation structure of rear-connection branch pipe of thin-wall plastic well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221004258U true CN221004258U (en) | 2024-05-24 |
Family
ID=91114820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322605126.9U Active CN221004258U (en) | 2023-09-25 | 2023-09-25 | Anti-sedimentation structure of rear-connection branch pipe of thin-wall plastic well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221004258U (en) |
-
2023
- 2023-09-25 CN CN202322605126.9U patent/CN221004258U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102486247B (en) | Water supply and drainage pipeline repair technique adopting size film lining method | |
| CN102518149A (en) | Plastic inspection well and assembling method thereof | |
| WO2008025200A1 (en) | A prestressed concrete pipe unit with a steel socket and a steel spigot and a concrete pipe formed of such concrete pipe units | |
| CN221004258U (en) | Anti-sedimentation structure of rear-connection branch pipe of thin-wall plastic well | |
| CN201347578Y (en) | High-density polyethylene environment-friendly piping shaft | |
| CN2881268Y (en) | Double-wall corugated pipe with bilayer wall spigot-and socket mouth | |
| CN201762723U (en) | Plastic-steel winding pipe network inspection well | |
| CN201464427U (en) | Ultrasonic detection pipe of bridge foundation pile | |
| CN100540970C (en) | The plastic winding structure wall bell-and-spigot pipe | |
| CN201354915Y (en) | Plastic socket tee | |
| CN205101771U (en) | Be used for prosthetic attach fitting of FRP pipe on -line interlude | |
| CN208982851U (en) | Drainage pipeline connection structure | |
| CN212983913U (en) | Pressure-bearing downcomer well back cover is from waterproof one-way water outlet layer board piece of burying | |
| CN200996508Y (en) | Shielding-sleeve threaded connecter | |
| CN209638561U (en) | A kind of corrugated steel pipe Combined concrete push pipe | |
| CN201354914Y (en) | Plastic socket elbow | |
| CN202466788U (en) | Injection molding manhole base and pipeline connector thereof | |
| CN201041270Y (en) | Steel-plastic composite tube connection structure possessing vertical reinforced rib | |
| CN206904393U (en) | Double-walled spiral welded pipe | |
| CN218094790U (en) | Sealed interfacing apparatus of sewage treatment pipeline | |
| CN201592515U (en) | Welding gun head for plastic wound pipes | |
| CN220506047U (en) | Pipe well connecting and sealing device | |
| CN218643500U (en) | Waterproof construction of prefabricated well and existing pipeline junction | |
| CN220790012U (en) | Underground row pile pipeline for municipal pipe network engineering | |
| CN116123364A (en) | Culvert pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |