CN113339604B - Anti-seepage device for water supply and drainage pipes in building engineering - Google Patents
Anti-seepage device for water supply and drainage pipes in building engineering Download PDFInfo
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- CN113339604B CN113339604B CN202110682369.5A CN202110682369A CN113339604B CN 113339604 B CN113339604 B CN 113339604B CN 202110682369 A CN202110682369 A CN 202110682369A CN 113339604 B CN113339604 B CN 113339604B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses an anti-seepage device for water supply and drainage pipes in constructional engineering, which comprises an upper cover body, wherein a lower cover body is arranged below the upper cover body, a rotating ring is rotatably arranged between the lower cover body and the upper cover body, two groups of fixing columns and two groups of connecting pieces are symmetrically arranged in an inner cavity of the rotating ring, the two groups of connecting pieces are respectively and rotatably connected with the upper cover body and the lower cover body, the two groups of connecting pieces are clamped with the rotating ring, extrusion pieces are vertically and symmetrically arranged in a circular cavity defined by the two groups of fixing columns and the two groups of connecting pieces, and an elastic sealing gasket is arranged between the two groups of extrusion pieces. The seepage-proofing device for the water supply and drainage pipe in the building engineering is additionally arranged at the joint of the pipeline, and can extrude the elastic sealing washer by closing two groups of extrusion plates of the connecting piece and the ground hole through manually rotating the rotating ring, so that the inner cavity wall of the elastic sealing washer can be in close contact with the pipeline, the sealing effect of the elastic sealing washer is enhanced, and the anti-leakage device is fixed with the pipeline.
Description
Technical Field
The invention relates to the field of pipeline closing water leakage prevention equipment, in particular to an anti-seepage device for a water supply and drainage pipe in constructional engineering.
Background
The construction engineering major is mainly responsible for teaching and management of the civil engineering major construction engineering direction. The basic theory and the basic knowledge of engineering mechanics, soil mechanics, measurement, house building engineering and structural engineering subjects are mainly developed and mastered. Refers to the general name of various buildings and engineering facilities which provide material and technology foundation for human life and production.
The design and installation of water supply and drainage pipes in modern buildings are very important, the connection between two groups of water supply and drainage pipes is generally realized by using a hot melting device or a threaded connection method, when the two groups of water supply and drainage pipes are connected by using the hot melting device, the leakage is often caused because the hot melting connection part cannot be completely sealed, when the two groups of water supply and drainage pipes are connected by using the threads, the joints of the water supply and drainage pipes are connected by winding sealing waterproof adhesive tapes for threaded connection, sometimes the sealing connection effect cannot be completely sealed, and often water seeps out from the joints, so that the seepage-proofing device for the water supply and drainage pipes in the building engineering is provided to solve the problem.
Disclosure of Invention
The invention mainly aims to provide an anti-seepage device for water supply and drainage pipes in building engineering, which can effectively solve the problems in the background technology.
In order to realize the purpose, the invention adopts the technical scheme that:
an anti-seepage device for water supply and drainage pipes in constructional engineering comprises an upper cover body, a lower cover body is arranged below the upper cover body, and a rotating ring is rotatably arranged between the lower cover body and the upper cover body; the inner cavity of the rotating ring is symmetrically provided with two groups of fixing columns, and symmetrically provided with two groups of connecting pieces, the upper ends and the lower ends of the two groups of fixing columns are respectively and fixedly connected with the upper cover body and the lower cover body, the two groups of connecting pieces are respectively and rotatably connected with the upper cover body and the lower cover body, and the two groups of connecting pieces are clamped with the rotating ring;
extrusion parts are symmetrically arranged in a circular cavity defined by the two groups of fixing columns and the two groups of connecting parts from top to bottom, the two groups of extrusion parts are respectively in threaded connection with the two groups of connecting parts, and an elastic sealing gasket is arranged between the two groups of extrusion parts;
and through holes which are convenient for the pipeline to run through are arranged on the upper cover body and the lower cover body.
Preferably, the rotating ring comprises a ring body, the upper end and the lower end of the ring body are both fixed with sliding clamping rings, the upper cover body and the lower cover body are both provided with sliding chutes, and the two groups of sliding clamping rings at the upper end and the lower end of the ring body are respectively positioned in the sliding chutes arranged on the upper cover body and the lower cover body and are connected in a matching way;
the inner cavity wall of the ring body is also provided with a plurality of groups of first clamping teeth which are uniformly arranged at equal intervals on the circumference by taking the axis of the ring body as the circle center.
Preferably, the connecting piece includes the screw rod, the upper and lower end of screw rod rotates with last lid and lower lid respectively and is connected, the middle part of screw rod is equipped with and uses its axle center as the centre of a circle to be the even equidistant a plurality of groups second latch of range of circumference, a set of second latch in a plurality of groups second latch is located the joint space of adjacent two sets of first latch, passes through promptly a plurality of groups second latch and a plurality of groups first latch realize the meshing transmission of screw rod and ring body.
Preferably, the upper end part and the lower end part of the screw rod are respectively positioned in the inner cavities of the two groups of bearings and fixedly connected with the walls of the inner cavities, and the outer walls of the two groups of bearings are respectively fixedly connected with the upper cover body and the lower cover body.
Preferably, the surface of the elastic sealing washer is a smooth surface, the upper end and the lower end of the elastic sealing washer are both provided with extrusion inclined planes, and the inner cavity of the insertion end of the elastic sealing washer is provided with an arc-shaped guide surface.
Preferably, the extrusion part comprises an extrusion plate, two groups of threaded pipes are symmetrically arranged and fixed on the outer wall of the extrusion plate, and the two groups of threaded pipes are respectively in threaded sleeve joint on the two groups of screw rods, so that threaded transmission is realized; and an annular lower pressing plate is fixed at the lower end of the extrusion plate.
Preferably, the section of the annular lower pressing plate is of a right-angled triangle structure, a contact inclined plane is further arranged on the annular lower pressing plate, and the contact inclined plane is abutted to an extrusion inclined plane arranged on the elastic sealing washer.
Preferably, the contact inclined surface of the annular lower pressing plate is provided with a smooth surface.
Preferably, all be equipped with the friction arch that is the even equidistant range of circumference on the outer wall of upper cover body and rotating ring, the friction arch can set up to strip arch, semicircle arch, frustum type arch etc..
Compared with the prior art, the invention has the following beneficial effects:
1. the anti-seepage device is additionally arranged at the joint of the pipeline, the device can drive two groups of extrusion plates to move close through the connecting piece by manually rotating the rotating ring, the elastic sealing washer is extruded, the inner cavity wall of the elastic sealing washer can be in close contact with the pipeline, the sealing effect of the elastic sealing washer is enhanced, and the anti-seepage device is fixed with the pipeline.
2. Through the cooperation of the contact inclined plane that is equipped with on the annular holding down plate and the extrusion inclined plane that is equipped with on the elastic sealing washer, can make elastic sealing washer when receiving the extrusion of two sets of stripper plates, its elastic sealing washer will receive inside extruded power, further strengthen elastic sealing washer's interior rampart and the outer wall in close contact with effect of pipeline.
Drawings
FIG. 1 is a schematic view of the whole structure of an anti-seepage device for water supply and drainage pipes in building engineering;
FIG. 2 is a schematic view showing the connection between the connecting member and the extrusion member of the anti-seepage device for the water supply and drainage pipes in the construction engineering;
FIG. 3 is a schematic view of a connecting member structure of an anti-seepage device for water supply and drainage pipes in building engineering according to the present invention;
FIG. 4 is a schematic view of the bottom press plate of the anti-seepage device for water supply and drainage pipes in construction engineering;
FIG. 5 is a schematic view of the front sectional view of an elastic sealing washer of the anti-seepage device for water supply and drainage pipes in building engineering;
fig. 6 is a schematic view of the installation position of the seepage-proofing device for the water supply and drainage pipe in the building engineering.
In the figure: 1. an upper cover body; 2. a lower cover body; 3. a rotating ring; 31. a ring body; 32. a sliding snap ring; 33. a first latch; 4. a connecting member; 41. a screw; 42. a second latch; 5. an extrusion member; 51. a compression plate; 52. a threaded pipe; 53. an annular lower pressure plate; 6. an elastic sealing gasket; 61. extruding the inclined plane; 62. an arc-shaped guide surface; 7. and (5) fixing the column.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
As shown in fig. 1-6, an anti-seepage device for water supply and drainage pipes in building engineering comprises an upper cover body 1, a lower cover body 2 is arranged below the upper cover body 1, and a rotating ring 3 is rotatably arranged between the lower cover body 2 and the upper cover body 1; two groups of fixing columns 7 and two groups of connecting pieces 4 are symmetrically arranged in the inner cavity of the rotating ring 3, the upper ends and the lower ends of the two groups of fixing columns 7 are fixedly connected with the upper cover body 1 and the lower cover body 2 respectively, the two groups of connecting pieces 4 are rotatably connected with the upper cover body 1 and the lower cover body 2 respectively, and the two groups of connecting pieces 4 are clamped with the rotating ring 3;
and through holes which are convenient for the pipeline to run through are arranged on the upper cover body 1 and the lower cover body 2.
The rotating ring 3 comprises a ring body 31, the upper end and the lower end of the ring body 31 are both fixed with a sliding clamping ring 32, and the two groups of sliding clamping rings 32 at the upper end and the lower end are respectively positioned in sliding grooves formed on the upper cover body 1 and the lower cover body 2;
a plurality of groups of first clamping teeth 33 which are uniformly arranged at equal intervals on the circumference of the circle center by taking the axis of the ring body 31 as the center of the circle are arranged on the inner cavity wall of the ring body 31;
the connecting piece 4 comprises a screw rod 41, the upper end and the lower end of the screw rod 41 are rotationally connected with the upper cover body 1 and the lower cover body 2, and the middle part of the screw rod 41 is provided with a plurality of groups of second clamping teeth 42 which are uniformly arranged at equal intervals on the circumference by taking the axis as the center of a circle; one group of second clamping teeth 42 in the plurality of groups of second clamping teeth 42 are positioned in the clamping gaps of the two adjacent groups of first clamping teeth 33 to form the meshing transmission of the clamping teeth;
the extrusion part 5 comprises an extrusion plate 51, two groups of threaded pipes 52 are symmetrically arranged on the outer wall of the extrusion plate 51, and the two groups of threaded pipes 52 are respectively sleeved on the two groups of screw rods 41 in a threaded manner; an annular lower pressure plate 53 is fixed to the lower end of the pressing plate 51.
When in use, the elastic sealing gasket 6 is positioned at the joint of two groups of spliced pipelines by sleeving the sealing gasket on two groups of pipelines which are connected, one hand holds the outer wall of the upper cover body 1 to keep the outer wall immovable, the other hand rotates the rotating ring 3, two groups of screw rods 41 are driven to rotate simultaneously by the matching of the first latch 33 arranged on the rotating ring 3 and the second latch 42 arranged on the screw rod 1, because the screw rods 41 are in threaded connection with the threaded pipes 52, the threaded pipes 52 can be driven to do linear motion while the screw rods 41 rotate, and two groups of extrusion plates 51 which are arranged up and down are driven to do drawing motion, thereby the extrusion of the elastic sealing gasket 6 is realized, the inner cavity wall of the elastic sealing gasket 6 is in close contact with the pipelines, the sealing effect is enhanced, and the fixation of the anti-leakage device and the pipelines is realized.
The upper part and the lower part of the screw rod 41 are respectively positioned in the inner cavities of the two groups of bearings and fixedly connected with the inner cavity walls of the two groups of bearings, and the outer walls of the two groups of bearings are respectively fixedly connected with the upper cover body 1 and the lower cover body 2, so that the screw rod 41 is conveniently connected with the upper cover body 1 and the lower cover body 2 in a rotating manner.
The surface of the elastic sealing washer 6 is a smooth surface, the upper end and the lower end of the elastic sealing washer 6 are both provided with extrusion inclined surfaces 61, and an arc-shaped guide surface 62 is arranged in an inner cavity of the insertion end of the elastic sealing washer 6; the cross-section of annular holding down plate 53 sets up to right triangle structure, the contact inclined plane that is equipped with on the annular holding down plate 53 offsets with the extrusion inclined plane 61 that is equipped with on the elastic seal ring 6, and through the cooperation of the contact inclined plane that is equipped with on the annular holding down plate 53 and the extrusion inclined plane 61 that is equipped with on the elastic seal ring 6, can make elastic seal ring 6 when receiving two sets of stripper plates 51 extrusion, its elastic seal ring 6 will receive inside extruded power to make elastic seal ring 6's interior rampart can with the outer wall in close contact with of pipeline. The arrangement of the arc-shaped guide surface 62 on the elastic sealing gasket 6 can play a role in guiding, so that the device can be conveniently sleeved with a pipeline.
The contact inclined plane of the annular lower pressing plate 53 is a smooth surface, so that the friction force action between the annular lower pressing plate 53 and the elastic sealing washer 6 can be reduced, and the annular lower pressing plate 53 is in sliding contact with the elastic sealing washer 6 conveniently.
Go up all to be equipped with the friction arch that is the even equidistant range of circumference on the outer wall of lid 1 and rotating ring 3, the friction arch can set up to strip arch, semicircle arch, frustum type arch etc. and the friction effect that the accessible was equipped with can strengthen and between the hand to be convenient for to the operation of controlling of last lid 1 and rotating ring 3.
The leakage-proof device is sleeved on the two groups of pipelines before hot-melting and sealing, after hot-melting and sealing are finished, the elastic sealing washer 6 is positioned at the joint of the two groups of spliced pipelines, the outer wall of the upper cover body 1 is held by one hand to keep the leakage-proof device stationary, the rotating ring 3 is rotated by the other hand, the two groups of screw rods 41 are driven to rotate simultaneously through the matching of the first latch teeth 33 arranged on the rotating ring 3 and the second latch teeth 42 arranged on the screw rods 1, the screw rods 41 are in threaded connection with the threaded pipes 52, the threaded pipes 52 can be in linear motion while the screw rods 41 rotate, so that the two groups of extruding plates 51 which are arranged up and down are driven to move closer, the extrusion of the elastic sealing washer 6 is realized, the inner cavity wall of the elastic sealing washer 6 is in tight contact with the pipelines, the sealing effect is enhanced, and the leakage-proof device is fixed with the pipelines, go up and all be equipped with the friction arch that is the even equidistant range of circumference on the outer wall of lid 1 and rotating ring 3, the effect of the friction arch that the accessible was equipped with can strengthen and the friction force between the hand, thereby be convenient for to the operation of controlling of going up lid 1 and rotating ring 3, elastic seal ring 6's last lower extreme all is equipped with extrusion inclined plane 61, and in the installation, through the cooperation of the extrusion inclined plane 61 that is equipped with on the contact inclined plane that is equipped with on the annular holding down plate 53 and the elastic seal ring 6, can make elastic seal ring 6 when receiving the extrusion of two sets of stripper plates 51, its elastic seal ring 6 will receive inside extruded power, thereby make elastic seal ring 6's interior rampart can with the outer wall in close contact with of pipeline, the effect of direction can be played in the setting of arc guide surface 62 on elastic seal ring 6, be convenient for cup joint of this device and pipeline.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a building engineering plumbing pipe watertight fittings, includes lid (1), its characterized in that: a lower cover body (2) is arranged below the upper cover body (1), and a rotating ring (3) is rotatably arranged between the lower cover body (2) and the upper cover body (1); the inner cavity of the rotating ring (3) is symmetrically provided with two groups of fixing columns (7) and two groups of connecting pieces (4), the upper ends and the lower ends of the two groups of fixing columns (7) are respectively and fixedly connected with the upper cover body (1) and the lower cover body (2), the two groups of connecting pieces (4) are respectively and rotatably connected with the upper cover body (1) and the lower cover body (2), and the two groups of connecting pieces (4) are clamped with the rotating ring (3);
extrusion parts (5) are symmetrically arranged in a circular cavity defined by the two groups of fixing columns (7) and the two groups of connecting parts (4) from top to bottom, the two groups of extrusion parts (5) are respectively fixedly connected with the two groups of connecting parts (4) in a threaded manner, and an elastic sealing gasket (6) is arranged between the two groups of extrusion parts (5);
through holes convenient for the penetration of pipelines are arranged on the upper cover body (1) and the lower cover body (2);
the rotating ring (3) comprises a ring body (31), and the upper end and the lower end of the ring body (31) are both fixed with a sliding clamping ring (32); the upper cover body (1) and the lower cover body (2) are respectively provided with a sliding groove, and the sliding clamping rings (32) at the upper end and the lower end are respectively matched and connected with the sliding grooves on the upper cover body (1) and the lower cover body (2); the inner cavity wall of the ring body (31) is also provided with a plurality of groups of first clamping teeth (33) which are uniformly arranged at equal intervals on the circumference by taking the axis of the ring body (31) as the circle center;
the connecting piece (4) comprises a screw rod (41), the upper end and the lower end of the screw rod (41) are respectively in rotary connection with the upper cover body (1) and the lower cover body (2), a plurality of groups of second clamping teeth (42) which are uniformly arranged at equal intervals on the circumference by taking the axis of the screw rod as the circle center are arranged in the middle of the screw rod (41), and one group of second clamping teeth (42) in the plurality of groups of second clamping teeth (42) is positioned in a clamping gap between two adjacent groups of first clamping teeth (33);
the surface of the elastic sealing washer (6) is a smooth surface, the upper end and the lower end of the elastic sealing washer (6) are both provided with an extrusion inclined surface (61), and an inner cavity of the insertion end of the elastic sealing washer (6) is provided with an arc-shaped guide surface (62);
the extrusion part (5) comprises an extrusion plate (51), two groups of threaded pipes (52) are symmetrically arranged and fixed on the outer wall of the extrusion plate (51), and the two groups of threaded pipes (52) are respectively sleeved on the two groups of screw rods (41) in a threaded manner; an annular lower pressure plate (53) is fixed at the lower end of the extrusion plate (51).
2. The seepage-proofing device for the water supply and drainage pipes of the building engineering as claimed in claim 1, which is characterized in that: the upper end part and the lower end part of the screw rod (41) are respectively positioned in the inner cavities of the two groups of bearings and fixedly connected with the walls of the inner cavities, and the outer walls of the two groups of bearings are respectively fixedly connected with the upper cover body (1) and the lower cover body (2).
3. The seepage-proofing device for the water supply and drainage pipes of the building engineering as claimed in claim 1, which is characterized in that: the cross-section of annular holding down plate (53) sets up to right triangle structure, the contact inclined plane that still is equipped with on annular holding down plate (53), the extrusion inclined plane (61) that are equipped with on contact inclined plane and the elastic sealing washer (6) are inconsistent.
4. An anti-seepage device for water supply and drainage pipes in constructional engineering according to claim 3, wherein: the contact inclined surface of the annular lower pressing plate (53) is set to be a smooth surface.
5. An anti-seepage device for water supply and drainage pipes in constructional engineering as claimed in any one of claims 1 to 3, wherein: the outer walls of the upper cover body (1) and the rotating ring (3) are provided with friction bulges which are uniformly arranged at equal intervals on the circumference, and the friction bulges can be strip bulges, semicircular bulges and frustum-shaped bulges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110682369.5A CN113339604B (en) | 2021-06-21 | 2021-06-21 | Anti-seepage device for water supply and drainage pipes in building engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110682369.5A CN113339604B (en) | 2021-06-21 | 2021-06-21 | Anti-seepage device for water supply and drainage pipes in building engineering |
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| Publication Number | Publication Date |
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| CN113339604A CN113339604A (en) | 2021-09-03 |
| CN113339604B true CN113339604B (en) | 2022-07-26 |
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| CN202110682369.5A Active CN113339604B (en) | 2021-06-21 | 2021-06-21 | Anti-seepage device for water supply and drainage pipes in building engineering |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482017B (en) * | 2022-01-04 | 2024-04-19 | 中铁时代建筑设计院有限公司 | Precast concrete tubular pile stake core hole sealing device |
| CN116717646B (en) * | 2023-08-10 | 2023-12-01 | 四川华能康定水电有限责任公司 | Pipeline connection sealing device for water guide cooling equipment of water turbine |
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| US6142536A (en) * | 1997-05-06 | 2000-11-07 | Alia Engineering Ag | Pipe coupling |
| CN2459507Y (en) * | 2000-08-31 | 2001-11-14 | 林竑 | Permeatio-resistant device for penetrating wall or board of water suppkly nad drainage pipe in building construction |
| CN101029699A (en) * | 2006-03-03 | 2007-09-05 | 株式会社奔克斯 | Pipe joint |
| CN204962092U (en) * | 2015-09-11 | 2016-01-13 | 中建八局第二建设有限公司 | Portable plastics water piping connection ware |
| CN208221823U (en) * | 2018-05-23 | 2018-12-11 | 江苏无锡二建建设集团有限公司 | A kind of construction drainage pipe connecting structure |
| CN112944070A (en) * | 2021-02-03 | 2021-06-11 | 王春雨 | Pipeline connection structure and municipal drainage and sewage pipeline |
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2021
- 2021-06-21 CN CN202110682369.5A patent/CN113339604B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6142536A (en) * | 1997-05-06 | 2000-11-07 | Alia Engineering Ag | Pipe coupling |
| CN2459507Y (en) * | 2000-08-31 | 2001-11-14 | 林竑 | Permeatio-resistant device for penetrating wall or board of water suppkly nad drainage pipe in building construction |
| CN101029699A (en) * | 2006-03-03 | 2007-09-05 | 株式会社奔克斯 | Pipe joint |
| CN204962092U (en) * | 2015-09-11 | 2016-01-13 | 中建八局第二建设有限公司 | Portable plastics water piping connection ware |
| CN208221823U (en) * | 2018-05-23 | 2018-12-11 | 江苏无锡二建建设集团有限公司 | A kind of construction drainage pipe connecting structure |
| CN112944070A (en) * | 2021-02-03 | 2021-06-11 | 王春雨 | Pipeline connection structure and municipal drainage and sewage pipeline |
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| CN113339604A (en) | 2021-09-03 |
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