CN111997090A - Waterproof structure of building underground pipe gallery - Google Patents
Waterproof structure of building underground pipe gallery Download PDFInfo
- Publication number
- CN111997090A CN111997090A CN202010947144.3A CN202010947144A CN111997090A CN 111997090 A CN111997090 A CN 111997090A CN 202010947144 A CN202010947144 A CN 202010947144A CN 111997090 A CN111997090 A CN 111997090A
- Authority
- CN
- China
- Prior art keywords
- positioning
- pipeline
- connecting pipe
- pipe gallery
- underground pipe
- 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.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention belongs to the technical field of underground pipe gallery waterproofing, and particularly relates to a waterproof structure of a building underground pipe gallery, which comprises a connecting pipe sleeve and a pipeline, wherein the pipeline is fixedly clamped at two ends of the connecting pipe sleeve, and the connecting pipe sleeve comprises a sealing outer layer and a sealing inner layer; set up the connection spiral shell seat that two projections connect pipe box and symmetric distribution on the connecting pipe cover, utilize two positioning nut of connection spiral shell seat spiro union, positioning nut's section is concave structure, both sides bottom all has the locating hole, the pipeline tip has set firmly the location pivot of "T" type structure, when installing positioning nut, the both ends of seting up the locating hole with positioning nut are "ten" font with the location pivot on the pipeline and place, rotatory twist moves positioning nut again, locating hole and location pivot block on the positioning nut are fixed, utilize the positioning nut and be connected between the spiral shell seat, it is fixed to combine the block between locating hole and the location pivot, make the hookup location between the connecting pipe box pipeline more stable.
Description
Technical Field
The invention belongs to the technical field of underground pipe gallery waterproofing, and particularly relates to a waterproof structure of a building underground pipe gallery.
Background
Underground pipe gallery places wherein and a public infrastructure who forms with the pipeline more than two kinds or two kinds, it is the direction of city lifeline engineering infrastructure development, the pipe gallery generally all buries in the underground, internal function is more and more, structural design service life also has certain requirement, and present groundwater environment is also more and more complicated, later stage operation requirement safety, in-process carrying out the construction to underground pipe gallery, because the junction of pipe gallery has the gap, if the waterproof performance of underground pipe gallery junction is relatively poor, produce the phenomenon of leaking easily, thereby produce harmful effects to underground pipe gallery's use, can increase the maintenance cost in later stage simultaneously.
China patent net has proposed an underground piping lane shield constructs construction waterproof construction (publication number is CN209586399U 3), the junction of this patent to the piping lane that exists among the prior art has the gap, if the waterproof performance of underground piping lane junction is relatively poor, produce the problem of leaking easily, a multistage sealed waterproof connection structure has been designed, can effectual improvement piping lane junction's waterproof performance through multistage sealing, however, when in-service use, be hollow circular tubular structure because of connecting pipe and waterproof sealing connection pipe box, cup joint the back together, through long-time rivers erode, the influence of the shrinkage that rises by heating, produce easily not hard up, reduce sealing stability, shorten life.
Therefore, the person skilled in the art has proposed a waterproof structure for building underground pipe gallery to solve the problems set forth in the above background.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a waterproof structure of a building underground pipe gallery, which has the characteristics of simple and reasonable structure, convenience in use, simplicity in operation, good sealing property and strong connection stability.
In order to achieve the purpose, the invention provides the following technical scheme: building underground pipe gallery waterproof construction, including the connecting tube sleeve and the fixed pipeline of connecting tube sleeve both ends block, the connecting tube sleeve is including sealed skin and sealed inlayer, sealed skin with through support column fixed connection between the sealed inlayer, the pipeline block is fixed sealed skin with between the sealed inlayer, sealed skin with the slip casting appearance chamber has between the sealed inlayer, sealed skin with the inboard of sealed inlayer all has set firmly spacing calorie of axle, have on the pipeline with spacing calorie of axle assorted spacing draw-in groove, the connecting tube is sheathe in and has set firmly the connection spiral shell seat, the outside spiro union of connecting the spiral shell seat is fixed with positioning nut, positioning nut's bottom has been seted up the locating hole, set firmly on the pipeline with locating hole assorted location pivot.
Preferably, the connecting pipe sleeve is provided with a grouting hole communicated with the grouting cavity.
Preferably, a one-way valve is fixedly arranged on the inner side of the grouting hole.
Preferably, the positioning shaft pin is of a T-shaped structure, and the cross-sectional areas of two ends of the positioning shaft pin are matched with the cross-sectional area of the inner side of the positioning hole.
Preferably, a spring seat is fastened and fixed to the bottom end of the positioning shaft pin.
Preferably, the limiting clamp shaft is made of elastic materials.
Preferably, the middle position of the top end of the connecting screw seat is of a concave structure, and a stud matched with the connecting screw seat is fixedly arranged at the middle position of the inner side of the positioning screw cap.
Preferably, the number of the connecting screw bases is two, and the two connecting screw bases are symmetrically distributed on the connecting pipe sleeve.
Preferably, the number of the positioning holes and the number of the positioning shaft pins are two, and the two positioning holes and the two positioning shaft pins are respectively and symmetrically distributed on the positioning nut and the pipeline.
Compared with the prior art, the invention has the beneficial effects that:
the invention arranges two symmetrically distributed connecting screw seats protruding out of the connecting pipe sleeve on the connecting pipe sleeve, and uses the connecting screw seats to screw two positioning nuts, the section of the positioning nut is concave, the bottom ends of two sides are provided with positioning holes, the end part of the pipeline is fixedly provided with a positioning shaft pin with a T-shaped structure, when the positioning nut is mounted, the two ends of the positioning nut provided with the positioning holes are placed in a cross shape with the positioning shaft pin on the pipeline, then the positioning nut is rotated and screwed until the positioning holes on the positioning nut are clamped and fixed with the positioning shaft pin, so as to realize the fourth layer of sealing between the pipeline and the connecting pipe sleeve, the connection between the positioning nut and the connecting screw seat is combined with the clamping and fixing between the positioning holes and the positioning shaft pin, so that the connecting position between the connecting pipe sleeve and the pipeline is more stable, the looseness is not easy to occur, the sealing, the service life is long.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic front sectional view of the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is a schematic front view of a partial structure of the connection state of the present invention;
fig. 5 is an enlarged detail view of a part a of fig. 3 according to the present invention.
In the figure: 1. a connecting pipe sleeve; 101. a grouting cavity; 11. sealing the outer layer; 12. sealing the inner layer; 13. limiting the shaft; 14. a support pillar; 2. a pipeline; 21. a limiting clamping groove; 3. grouting holes; 4. a connecting screw seat; 41. a stud; 5. positioning a shaft pin; 51. a spring seat; 6. positioning a nut; 601. and (7) positioning the holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides the following technical solutions: building underground pipe gallery waterproof construction, including connecting pipe box 1 and the fixed pipeline 2 of connecting pipe box 1 both ends block, connecting pipe box 1 is including sealed outer 11 and sealed inlayer 12, through support column 14 fixed connection between sealed outer 11 and the sealed inlayer 12, pipeline 2 block is fixed between sealed outer 11 and sealed inlayer 12, slip casting appearance chamber 101 has between sealed outer 11 and the sealed inlayer 12, sealed outer 11 all has set firmly spacing calorie of axle 13 with the inboard of sealed inlayer 12, pipeline 2 is last to have with spacing calorie of axle 13 assorted spacing draw-in groove 21, connecting pipe box 1 is last to have set firmly and is connected screw base 4, the outside spiro union of connecting screw base 4 is fixed with positioning nut 6, positioning hole 601 has been seted up to positioning nut 6's bottom, pipeline 2 is last to set firmly with positioning pin 5 with positioning hole 601 assorted.
In this embodiment: a connecting screw seat 4 is fixedly arranged on the connecting pipe sleeve 1, a positioning screw cap 6 is fixed on the outer side of the connecting screw seat 4 in a threaded manner, a positioning hole 601 is formed in the bottom end of the positioning screw cap 6, and a positioning shaft pin 5 matched with the positioning hole 601 is fixedly arranged on the pipeline 2; the connecting pipe sleeve 1 is provided with two symmetrically distributed connecting screw seats 4 which protrude out of the connecting pipe sleeve 1, the connecting screw seats 4 are in threaded connection with two positioning screw caps 6, the cross sections of the positioning screw caps 6 are of a concave structure, the bottom ends of two sides of each positioning screw cap are provided with positioning holes 601, the end part of the pipeline 2 is fixedly provided with a positioning shaft pin 5 of a T-shaped structure, when the positioning screw caps 6 are installed, two ends of each positioning screw cap 6 provided with the positioning holes 601 are placed in a cross shape with the positioning shaft pin 5 on the pipeline 2, then the positioning screw caps 6 are screwed in a rotating mode until the positioning holes 601 on the positioning screw caps 6 are fixedly clamped with the positioning shaft pins 5, the fourth layer of sealing between the pipeline 2 and the connecting pipe sleeve 1 is realized, the connecting position between the connecting pipe sleeve 1 and the pipeline 2 is more stable by utilizing the connection between the positioning screw caps 6 and the connecting screw seats, the anti-loosening sealing device is not easy to loosen, good in sealing effect, simple in structure, convenient to disassemble and assemble, convenient to use and long in service life.
Specifically, the connecting pipe sleeve 1 is provided with a grouting hole 3 communicated with the grouting cavity 101; during the use, embolia the inboard of connecting pipe box 1 respectively with two pipelines 2, press from both sides and establish between the sealed skin 11 of connecting pipe box 1 and sealed inlayer 12, realize that the first layer is sealed, when inserting connecting pipe box 1 with pipeline 2, be connected with spacing draw-in groove 21 on the pipeline 2 through spacing card axle 13 on the connecting pipe box 1, realize that the second layer is sealed, inject waterproof thick liquids into slip casting appearance chamber 101 through slip casting hole 3 at last, treat that waterproof thick liquids solidify the back, realize the third layer and seal.
Specifically, a one-way valve is fixedly arranged on the inner side of the grouting hole 3; the reverse flow of the waterproof slurry is prevented.
Specifically, the positioning shaft pin 5 is of a T-shaped structure, and the cross-sectional areas of the two ends of the positioning shaft pin 5 are matched with the cross-sectional area of the inner side of the positioning hole 601; the connection between the positioning hole 601 and the positioning shaft pin 5 is more stable.
Specifically, a spring seat 51 is fixed at the bottom end of the positioning shaft pin 5 in a clamping manner; can be automatically compressed after being subjected to external pressure and automatically rebounded after losing the external pressure, thereby enhancing the connection stability.
Specifically, the limit shaft 13 is made of an elastic material.
Specifically, the middle position of the top end of the connecting screw seat 4 is of a concave structure, the middle position of the inner side of the positioning screw cap 6 is fixedly provided with two studs 41 matched with the connecting screw seat 4, and the two connecting screw seats 4 are symmetrically distributed on the connecting pipe sleeve 1; utilize two positioning nut 6 of connecting screw seat 4 spiro union, positioning nut 6's section is concave structure, both sides bottom all has the locating hole 601, 2 tip on the pipeline sets firmly the location pivot 5 of "T" type structure, when installation positioning nut 6, the both ends of offering the locating hole 601 with positioning nut 6 are "ten" font with the location pivot 5 on the pipeline 2 and place, rotatory twist positioning nut 6 again, until the locating hole 601 on the positioning nut 6 is fixed with the block of location pivot 5, realize the fourth layer between pipeline 2 and the connecting tube cover 1 and seal.
Specifically, the number of the positioning holes 601 and the number of the positioning pins 5 are two, and the two positioning holes are respectively and symmetrically distributed on the positioning nut 6 and the pipeline 2.
The working principle and the using process of the invention are as follows: when in use, two pipelines 2 are respectively sleeved on the inner side of a connecting pipe sleeve 1 and clamped between a sealing outer layer 11 and a sealing inner layer 12 of the connecting pipe sleeve 1 to realize first-layer sealing, when the pipelines 2 are inserted into the connecting pipe sleeve 1, the limiting clamping shaft 13 on the connecting pipe sleeve 1 is connected with a limiting clamping groove 21 on the pipelines 2 to realize second-layer sealing, waterproof slurry is injected into a grouting cavity 101 through a grouting hole 3, after the waterproof slurry is solidified, third-layer sealing is realized, finally a positioning nut 6 and a connecting screw seat 4 are screwed and rotated to a positioning hole 601 on the positioning nut 6 and a positioning shaft pin 5 on the pipelines 2 to be clamped and fixed together to finish fourth-layer sealing, the invention adopts the connecting screw seat 4 to screw two positioning nuts 6 which protrude out of the connecting pipe sleeve 1 and are symmetrically distributed, and the section of the positioning nut 6 is of a concave structure, both sides bottom all has the locating hole 601, 2 tip of pipeline sets firmly the location pivot 5 of "T" type structure, when installation positioning nut 6, the both ends that set up positioning nut 6 locating hole 601 are "ten" font with the location pivot 5 on the pipeline 2 and place, rotatory the twisting moves positioning nut 6 again, it is fixed with location pivot 5 block until locating hole 601 on positioning nut 6, realize pipeline 2 and the fourth layer between connecting pipe box 1 is sealed, utilize positioning nut 6 and be connected between screw seat 4, it is fixed to combine the block between locating hole 601 and the location pivot 5, make the hookup location between connecting pipe box 1 and the pipeline 2 more stable, difficult not hard up, it is sealed effectual, moreover, the steam generator is simple in structure, and the steam generator is convenient for dismouting, and convenient to use, long service life.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The phrase "comprising a defined element does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. Building underground pipe gallery waterproof construction, including connecting pipe box (1) and pipeline (2) that connecting pipe box (1) both ends block is fixed, its characterized in that: the connecting pipe sleeve (1) comprises a sealing outer layer (11) and a sealing inner layer (12), the sealing outer layer (11) is fixedly connected with the sealing inner layer (12) through a support column (14), the pipeline (2) is clamped and fixed between the sealing outer layer (11) and the sealing inner layer (12), a grouting containing cavity (101) is arranged between the sealing outer layer (11) and the sealing inner layer (12), limiting clamping shafts (13) are fixedly arranged on the inner sides of the sealing outer layer (11) and the sealing inner layer (12), limiting clamping grooves (21) matched with the limiting clamping shafts (13) are arranged on the pipeline (2), a connecting screw base (4) is fixedly arranged on the connecting pipe sleeve (1), a positioning nut (6) is fixedly screwed on the outer side of the connecting screw base (4), and a positioning hole (601) is formed in the bottom end of the positioning nut (6), and a positioning shaft pin (5) matched with the positioning hole (601) is fixedly arranged on the pipeline (2).
2. The waterproof structure of building underground pipe gallery according to claim 1, characterized in that: the connecting pipe sleeve (1) is provided with a grouting hole (3) communicated with the grouting cavity (101).
3. The waterproof structure of building underground pipe gallery according to claim 2, characterized in that: and a one-way valve is fixedly arranged on the inner side of the grouting hole (3).
4. The waterproof structure of building underground pipe gallery according to claim 1, characterized in that: the positioning shaft pin (5) is of a T-shaped structure, and the cross sectional areas of two ends of the positioning shaft pin (5) are matched with the cross sectional area of the inner side of the positioning hole (601).
5. The waterproof structure of building underground pipe gallery according to claim 1, characterized in that: and a spring seat (51) is clamped and fixed at the bottom end of the positioning shaft pin (5).
6. The waterproof structure of building underground pipe gallery according to claim 1, characterized in that: the limiting clamp shaft (13) is made of elastic materials.
7. The waterproof structure of building underground pipe gallery according to claim 1, characterized in that: the middle position of the top end of the connecting screw seat (4) is of a concave structure, and a stud (41) matched with the connecting screw seat (4) is fixedly arranged at the middle position of the inner side of the positioning screw cap (6).
8. The waterproof structure of building underground pipe gallery according to claim 1, characterized in that: the number of the connecting screw bases (4) is two, and the two connecting screw bases (4) are symmetrically distributed on the connecting pipe sleeve (1).
9. The waterproof structure of building underground pipe gallery according to claim 1, characterized in that: the number of the positioning holes (601) and the number of the positioning shaft pins (5) are two, and the two positioning holes are symmetrically distributed on the positioning screw cap (6) and the pipeline (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010947144.3A CN111997090A (en) | 2020-09-10 | 2020-09-10 | Waterproof structure of building underground pipe gallery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010947144.3A CN111997090A (en) | 2020-09-10 | 2020-09-10 | Waterproof structure of building underground pipe gallery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111997090A true CN111997090A (en) | 2020-11-27 |
Family
ID=73468595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010947144.3A Pending CN111997090A (en) | 2020-09-10 | 2020-09-10 | Waterproof structure of building underground pipe gallery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111997090A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB741206A (en) * | 1953-10-12 | 1955-11-30 | Lewis Mervyn Cecil Seamark | Improvements relating to pipe couplings |
| CN2176479Y (en) * | 1993-09-08 | 1994-09-07 | 安晓宁 | Cutting sleeve type flexible pipeline expansion joint |
| CN206656051U (en) * | 2017-04-14 | 2017-11-21 | 河北建投宝塑管业有限公司 | PVC O Management of Pipeline Mechanical Equipment locking and connecting devices |
| CN206816994U (en) * | 2017-06-22 | 2017-12-29 | 青岛海川建设集团有限公司 | A kind of high high-strength pump assembly type feeding pipe of sealing |
| CN207073654U (en) * | 2017-07-17 | 2018-03-06 | 河北四维消防工程有限公司 | A kind of fire protection pipeline mounting structure |
| CN108626495A (en) * | 2018-07-05 | 2018-10-09 | 郑州市建筑设计院 | Underground anti-corrosion pipe connector |
| CN209586399U (en) * | 2019-03-23 | 2019-11-05 | 王清泉 | A kind of underground pipe gallery shield-tunneling construction waterproof construction |
| CN111076004A (en) * | 2019-12-30 | 2020-04-28 | 北京龙辰泉消防设备安装工程有限公司 | Fire fighting pipeline installation structure and installation method thereof |
-
2020
- 2020-09-10 CN CN202010947144.3A patent/CN111997090A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB741206A (en) * | 1953-10-12 | 1955-11-30 | Lewis Mervyn Cecil Seamark | Improvements relating to pipe couplings |
| CN2176479Y (en) * | 1993-09-08 | 1994-09-07 | 安晓宁 | Cutting sleeve type flexible pipeline expansion joint |
| CN206656051U (en) * | 2017-04-14 | 2017-11-21 | 河北建投宝塑管业有限公司 | PVC O Management of Pipeline Mechanical Equipment locking and connecting devices |
| CN206816994U (en) * | 2017-06-22 | 2017-12-29 | 青岛海川建设集团有限公司 | A kind of high high-strength pump assembly type feeding pipe of sealing |
| CN207073654U (en) * | 2017-07-17 | 2018-03-06 | 河北四维消防工程有限公司 | A kind of fire protection pipeline mounting structure |
| CN108626495A (en) * | 2018-07-05 | 2018-10-09 | 郑州市建筑设计院 | Underground anti-corrosion pipe connector |
| CN209586399U (en) * | 2019-03-23 | 2019-11-05 | 王清泉 | A kind of underground pipe gallery shield-tunneling construction waterproof construction |
| CN111076004A (en) * | 2019-12-30 | 2020-04-28 | 北京龙辰泉消防设备安装工程有限公司 | Fire fighting pipeline installation structure and installation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111997090A (en) | Waterproof structure of building underground pipe gallery | |
| CN208311698U (en) | A kind of pipe fitting | |
| CN205118237U (en) | Antiseized even rubber ring of ditch slot type coupling | |
| CN210985592U (en) | End sealing device of electric buried pipeline | |
| CN205640001U (en) | A elasticity sealing washer for plastic check well | |
| CN202691346U (en) | Ultrahigh pressure test pressure steel tube device | |
| CN106122650B (en) | The active joint of walled tube | |
| CN208363703U (en) | Bathroom assembling assembly | |
| CN214464263U (en) | Assembled tunnel joint structure | |
| CN219992648U (en) | Rain and sewage shunt tube | |
| CN203973443U (en) | The fuel injector mounting tool of four-valve engine | |
| CN211083266U (en) | Embedded pipe sealing device | |
| CN215522267U (en) | Municipal administration natural gas line convenient to installation | |
| CN218294920U (en) | Municipal administration pipeline rainwater recycle pipeline plugging device | |
| CN220980599U (en) | Spherical ink pipe fitting | |
| CN215568102U (en) | Filterable flange ball valve | |
| CN219796422U (en) | Water pipe end connecting structure with built-in buckle block | |
| CN220792368U (en) | Steel pipe convenient to install | |
| CN216789501U (en) | Hydraulic engineering's water conservancy pipeline supports connection structure | |
| CN204064815U (en) | Fire proof motor ventilation duct water test unit | |
| CN213177180U (en) | Sealing flange for pressure test | |
| CN212718490U (en) | Hydraulic engineering pipeline connecting device | |
| CN217784466U (en) | Stop valve coupling assembling with lightning-arrest function | |
| CN217878813U (en) | Rock permeability test device | |
| CN211690655U (en) | Municipal administration water supply and drainage pipeline connection structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201127 |
|
| RJ01 | Rejection of invention patent application after publication |