CN203977454U - The connector of manhole and well seat and pipeline - Google Patents
The connector of manhole and well seat and pipeline Download PDFInfo
- Publication number
- CN203977454U CN203977454U CN201420403017.7U CN201420403017U CN203977454U CN 203977454 U CN203977454 U CN 203977454U CN 201420403017 U CN201420403017 U CN 201420403017U CN 203977454 U CN203977454 U CN 203977454U
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- CN
- China
- Prior art keywords
- manhole
- connecting portion
- connector
- pipeline
- well seat
- 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.)
- Expired - Fee Related
Links
- 238000009434 installation Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 239000004033 plastic Substances 0.000 claims description 16
- 229920003023 plastic Polymers 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000013536 elastomeric material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model relates to manhole technical field, and the connector of a kind of manhole and well seat and pipeline is provided.Connector (10) comprising: manhole connecting portion (11), is the tubulose of hollow, for connecting the joint (23) of described manhole well seat (21); Pipeline connecting portion (13), by rubber, made, the reducing tubulose that is hollow, for connecting pipe (30), it is little near the section diameter of pipeline (30) one sides when mounted, the section diameter being connected with middle interconnecting piece (12) is large, and the diameter of this diameter and pipeline (30) is suitable; Middle interconnecting piece (12), is made by rubber, is the tubulose of hollow, and one side is connected with manhole connecting portion (11), and opposite side is connected with pipeline connecting portion (13).Connector of the present utility model and manhole are easy for installation, good sealing effect, and can adapt to different setting angles and the gradient.
Description
[technical field]
The utility model relates to manhole technical field, particularly relates to the connector of a kind of manhole and well seat and pipeline.
[background technology]
Manhole is to be maintenance, the easy for installation settings such as the power supply of Urban Underground infrastructure, feedwater, draining, communication, cable television, gas pipe, public lighting circuit, generally being located on pipeline intersection, turning, caliber or gradient change place and straight line pipeline section and locating at a certain distance, is to be convenient to make regular check on ancillary structure.
In municipal engineering at present, carrying out network of underground transformation, mainly that the manhole of cement is replaced with to plastic inspection well (being commonly called as plastics " inspection shaft "), what the well seat part of plastic inspection well adopted mostly is once injection moulding, reaches the connection that changes caliber and angle with accessories such as reducing joint, angle joint and rubber seal.Supporting well lid, pit shaft, the accessory developed of plastic inspection well, pavement loading acts on around manhole by well lid, well seat, has avoided the destruction of pavement loading to manhole.Well seat has the function fluctuating, and the height that can initiatively adapt to road surface changes, and pit shaft adopts special-purpose pit shaft simultaneously, can be according to on-the-spot depth of burying intercepting corresponding length, flexibly and easily.Plastic inspection well can be divided into plastic inspection well and municipal drainage plastic inspection well for the draining of one residential.
But the pipeline using in plumbing field is at present generally concrete duct, and the connection how realizing between concrete duct and plastic inspection well seat is a great problem of this area.In prior art, mainly contain two kinds of modes and realize being tightly connected between plastic inspection well and concrete duct, a kind of is mode by heat shrinking sleeve, its comparatively inconvenience of not only constructing, and sealing performance is also not very good; Another kind is to adopt syndeton, by the mode of interpolation type, syndeton is inserted in pipe of cement, then is sealed by cement paste, and its site operation is also inconvenient.
Given this, overcoming the existing defect of above-mentioned prior art is the art problem demanding prompt solution.
[utility model content]
The technical problems to be solved in the utility model is to provide the connector of a kind of manhole and well seat and pipeline, and this connector is flexible connecting member, easy for installation, good sealing effect, and can adapt to different setting angles and the gradient.
The utility model adopts following technical scheme:
A kind of connector (10), for connecting manhole well seat (21) and pipeline (30), comprise manhole connecting portion (11), middle interconnecting piece (12) and the pipeline connecting portion (13) setting gradually, wherein:
Described manhole connecting portion (11) is the tubulose of hollow, for connecting the joint (23) of described manhole well seat (21);
Described pipeline connecting portion (13) is made by rubber, the reducing tubulose that is hollow, be used for connecting described pipeline (30), pipeline connecting portion (13) is little near the section diameter of described pipeline (30) one sides when mounted, pipeline connecting portion (13) is large with the section diameter that middle interconnecting piece (12) is connected, and the section diameter that described pipeline connecting portion (13) is connected with middle interconnecting piece (12) and the diameter of described pipeline (30) are suitable;
Described middle interconnecting piece (12) is made by rubber, is the tubulose of hollow, and a side of middle interconnecting piece (12) is connected with manhole connecting portion (11), and opposite side is connected with pipeline connecting portion (13).
Further, described pipeline connecting portion (13) comprises three parts: tubular body (131), installation sleeve (133) and connect described tubular body (131) and the spacer shell (132) of installation sleeve (133);
Described tubular body (131) is the part that pipeline connecting portion (13) is connected with middle interconnecting piece (12), described installation sleeve (133) is pipeline connecting portion (13) part of close described pipeline (30) one sides when mounted, and described spacer shell (132) is horn-like.
Further, the outer wall undulate of described middle interconnecting piece (12).
Further, on described middle interconnecting piece (12), be provided with the quoit (121) for increasing intensity.
Further, described quoit (121) is steel wire, and described steel wire adopts vacuum canoe to be arranged on described middle interconnecting piece (12).
Further, between described connector (10) and manhole well seat (21), by socket joint, be connected, described manhole connecting portion (11) is made by the rubber of high rigidity; Or between described connector (10) and manhole well seat (21), by pyrocondensation bag, be connected, described manhole connecting portion (11) is made of plastics; Or between described connector (10) and manhole well seat (21), by flange, be connected, the flange (40) on described manhole connecting portion (11) is made of metal;
When being connected by socket joint between described connector (10) and manhole well seat (21), on the outer wall of described manhole connecting portion (11), be provided with at least two circle projections (111), the outermost circle projection (111) arranging on the outer wall of described manhole connecting portion (11) is hook-shaped, described hook-shaped projection (111) is for the sealing between manhole connecting portion (11) and the joint (23) of manhole well seat (21), and remaining projection (111) is for the location between manhole connecting portion (11) and the joint (23) of manhole well seat (21).
Further, described middle interconnecting piece (12) and pipeline connecting portion (13) are made by the elastomeric material of soft.
The utility model also provides a kind of manhole (20), comprise manhole well seat (21), joint (23) one sides at manhole well seat (21) are provided with the connector (10) as described in claim 1-8 any one, the joint (23) of connector (10) and manhole well seat (21) is processed into one, or between connector (10) and manhole well seat (21) by socket joint be connected, the connection of pyrocondensation bag or flange connect.
Compared with prior art, the beneficial effects of the utility model are:
(1) side of connector directly socket joint enter the joint of manhole well seat, or connect by pyrocondensation bag, or connect by flange, opposite side is designed to reducing shape, during installation, reducing shape one side can tightly be wrapped up pipeline, effectively realized being tightly connected between plastic inspection well and concrete duct, its favorable sealing property;
(2), during construction and installation, only need the operation of constructor's staff just can realize the installation of connector, without by other instruments, also without increasing again other auxiliary seal modes, simple to operation;
(3) middle interconnecting piece of connector and pipeline connecting portion are made by flexible rubber, can adapt to the angle of turning round while installing, thereby adapt to different setting angles and the gradient.
[accompanying drawing explanation]
Fig. 1 is the lateral view of the connector that provides of the utility model embodiment 1;
Fig. 2 is the stereogram of the connector that provides of the utility model embodiment 1;
Fig. 3 is the schematic diagram before the connector that provides of the utility model embodiment 1 and manhole well seat and pipeline construction are installed;
Fig. 4 is the schematic diagram after the connector that provides of the utility model embodiment 1 and manhole well seat and pipeline construction are installed;
Fig. 5 is the lateral view of the manhole that provides of the utility model embodiment 2;
Fig. 6 be the utility model embodiment 2 provide manhole and the schematic diagram installed of pipeline construction;
Fig. 7 is the lateral view of the connector that provides of the utility model embodiment 3;
Fig. 8 is the lateral view of the connector that provides of the utility model embodiment 5.
In figure:
10-connector, 11-manhole connecting portion,
111-projection, 12-middle interconnecting piece,
121-quoit, 13-pipeline connecting portion,
131-tubular body, 132-spacer shell,
133-installation sleeve, 20-manhole,
21-well seat, 22-pit shaft,
23-joint, 30-pipeline;
40-flange.
[specific embodiment]
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
In addition,, in each embodiment of described the utility model, involved technical characterictic just can not combine mutually as long as do not form each other conflict.
Below described pipeline, comprise the pipeline of various municipal administrations or community, for example water supply and sewerage pipeline.
embodiment 1:
The structural representation of the connector 10 providing for the utility model embodiment 1 is provided shown in Fig. 1 and Fig. 2., please refer to shown in Fig. 3 and Fig. 4, be connector 10 and the well seat 21 of manhole 20 and the schematic diagram of pipeline 30 construction and installation meanwhile:
A kind of connector 10, for connecting manhole well seat 21 and pipeline 30, it comprises manhole connecting portion 11, middle interconnecting piece 12 and the pipeline connecting portion 13 setting gradually.Between the connector 10 that the present embodiment provides and manhole well seat (21), by socket joint, be connected.
Wherein, manhole connecting portion 11 is made by rubber, is the tubulose of hollow, for socket joint, enters joint 23 realizations of manhole well seat 21 and being connected of joint 23, is provided with at least two circle projections 111 on the outer wall of manhole connecting portion 11.The outermost circle projection 111 arranging on the outer wall of manhole connecting portion 11 is hook-shaped, hook-shaped projection 111 is for the sealing between manhole connecting portion 11 and the joint 23 of manhole well seat 21, remaining projection 111 is for the location between manhole connecting portion 11 and the joint 23 of manhole well seat 21, the swing while preventing from installing between mutually.Particularly, on the outer wall of manhole connecting portion 11, the part of the joint 23 of close manhole well seat 21 is provided with at least one circle projection 111, and the part of close middle interconnecting piece 12 is provided with at least one circle projection 111 (this circle protruding 111 is hooked projection).In the present embodiment, on the outer wall of manhole connecting portion 11, the part of the joint 23 of close manhole well seat 21 is provided with two circle projections 111, and wherein an outermost circle projection is hook-shaped; Part near middle interconnecting piece 12 is also provided with two circle projections 111.
Pipeline connecting portion 13 is made by rubber, the reducing tubulose that is hollow, for connecting pipe 30, pipeline connecting portion 13 is little near the section diameter of pipeline 30 1 sides when mounted, pipeline connecting portion 13 is large with the section diameter that middle interconnecting piece 12 is connected, and the section diameter that pipeline connecting portion 13 is connected with middle interconnecting piece 12 and the diameter of pipeline 30 are suitable.Particularly, pipeline connecting portion 13 comprises three parts: the spacer shell 132 of tubular body 131, installation sleeve 133 and connecting tubular body 131 and installation sleeve 133; Tubular body 131 is the part that pipeline connecting portion 13 is connected with middle interconnecting piece 12, and installation sleeve 133 is pipeline connecting portion 13 part of close pipeline 30 1 sides when mounted, and spacer shell 132 is horn-like; The diameter of the diameter of tubular body 131 and pipeline 30 is suitable, and the diameter of installation sleeve 133 is less than the diameter of tubular body 131.Such structure and size design, make when mounted can be first by installation sleeve 133 turnups to tubular body 131; Then tubular body 131 covers are installed on pipeline 30 outer walls; Finally the installation sleeve of turnup 133 turnups are returned to home position, tightly cover installs on pipeline 30 outer walls.The pipeline connecting portion 13 of reducing shape can tightly wrap up pipeline, has effectively realized being tightly connected between plastic inspection well and concrete duct, its favorable sealing property.And, during construction and installation, connector socket joint is entered to manhole well seated connection head and connector cover is installed on concrete duct, all only need the operation of constructor's staff just can realize the installation of connector, without by other instruments, also without increasing again other auxiliary seal modes, simple to operation.
Middle interconnecting piece 12 is also made by rubber, is the tubulose of hollow, and a side of middle interconnecting piece 12 is connected with manhole connecting portion 11, and opposite side is connected with pipeline connecting portion 13.In a preferred embodiment, the outer wall undulate of middle interconnecting piece 12, is convenient to stretch stretching.On middle interconnecting piece 12, be provided with the quoit 121 for increasing intensity, middle interconnecting piece 12 buried after underground and can not be crushed.In the present embodiment, quoit 121 is ring like steel wire, and steel wire adopts vacuum canoe to be arranged on middle interconnecting piece 12, is also that the wall of middle interconnecting piece 12 is hollow form, comprises outer wall and inwall, is vacuum between outer wall and inwall, and vacuum inside is wound with steel wire.
In the selection of material, manhole connecting portion 11 is made by the elastomeric material of high rigidity, meets the requirement of bell and spigot frame to hardness; Middle interconnecting piece 12 and pipeline connecting portion 13 are made by the elastomeric material of soft, and the selection of flexible rubber can adapt to the angle of turning round while installing, thereby adapts to different setting angles and the gradient.
embodiment 2:
As shown in Figure 5, a kind of manhole 20, comprises manhole well seat 21 and pit shaft 22, and well seat is provided with several joints 23, for connecting with pipeline.Joint 23 outsides at manhole well seat 21 are provided with the connector 10 in embodiment 1, and connector 10 can be processed into one with the joint 23 of manhole well seat 21, and the mode that also can connect by socket joint is connected with the joint 23 of manhole well seat 21.The concrete structure of connector 10 and material please refer to the description of embodiment 1, do not repeat herein.
In the present embodiment, the side that manhole upper connector is connected with concrete duct is designed to reducing shape, and during installation, reducing shape one side can tightly be wrapped up pipeline, has effectively realized being tightly connected between plastic inspection well and concrete duct, its favorable sealing property; During construction and installation, only need the operation of constructor's staff just can realize the installation of connector, without by other instruments, also without increasing again other auxiliary seal modes, simple to operation; The middle interconnecting piece of connector and pipeline connecting portion are made by flexible rubber, can adapt to the angle of turning round while installing, thereby adapt to different setting angles and the gradient.
embodiment 3:
The structural representation of the connector 10 providing for the utility model embodiment 3 is provided shown in Fig. 7.The difference of the present embodiment and embodiment 1 is, between the connector 10 that the present embodiment provides and manhole well seat 21, by pyrocondensation bag, is connected.Only the difference of the present embodiment and embodiment 1 is set forth below, remainder is identical with embodiment 1 structure, repeats no more.
In the present embodiment, on the outer wall of manhole connecting portion 11, projection is not set, but adopts the mode of pyrocondensation bag that connector 10 is connected and is sealed with the joint 23 of manhole well seat 21.Wherein, manhole connecting portion 11 is made of plastics, but not rubber in embodiment 1.
embodiment 4:
The present embodiment provides a kind of manhole.The difference of the present embodiment and embodiment 2 is, in the joint outside of manhole well seat, is provided with the connector in embodiment 3, in the present embodiment, between connector and manhole well seat, by pyrocondensation bag, is connected.Only the difference of the present embodiment and embodiment 2 is set forth below, remainder is identical with embodiment 2 structures, repeats no more.
In the present embodiment, on the outer wall of manhole connecting portion, projection is not set, but adopts the mode of pyrocondensation bag that connector is connected and is sealed with the joint of manhole well seat.Wherein, manhole connecting portion is made of plastics, but not rubber in embodiment 2.
embodiment 5:
The structural representation of the connector 10 providing for the utility model embodiment 5 is provided shown in Fig. 8.The difference of the present embodiment and embodiment 1 is, between the connector 10 that the present embodiment provides and manhole well seat, by flange, is connected.Only the difference of the present embodiment and embodiment 1 is set forth below, remainder is identical with embodiment 1 structure, repeats no more.
In the present embodiment, on the outer wall of manhole connecting portion 11, projection is not set, but the partial design that the joint of manhole connecting portion 11 and well seat is connected becomes flange 40.Similarly, the part joint of well seat 23 being connected with manhole connecting portion 11 is also designed to flange.Between two flange 40, be bolted.Flange gasket can also be set between two flange 40 and realize sealing.Wherein, two flange 40 are all made of metal, but not rubber in embodiment 1.
Be understandable that, the interconnected part of joint of manhole connecting portion 11 and well seat also can not be designed to flange, but will between manhole connecting portion 11 and the joint of well seat, be fixedly connected with by two independent flange.
embodiment 6:
The present embodiment provides a kind of manhole.The difference of the present embodiment and embodiment 2 is, in the joint outside of manhole well seat, is provided with the connector in embodiment 5, in the present embodiment, between connector and manhole well seat, by flange, is connected.Only the difference of the present embodiment and embodiment 2 is set forth below, remainder is identical with embodiment 2 structures, repeats no more.
In the present embodiment, on the outer wall of manhole connecting portion, projection is not set, but the mode that adopts flange to connect is connected connector and seal with the joint of manhole well seat.Wherein, two flange are all made of metal, but not rubber in embodiment 2.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a connector (10), be used for connecting manhole well seat (21) and pipeline (30), it is characterized in that, comprise the manhole connecting portion (11), middle interconnecting piece (12) and the pipeline connecting portion (13) that set gradually, wherein:
Described manhole connecting portion (11) is the tubulose of hollow, for connecting the joint (23) of described manhole well seat (21);
Described pipeline connecting portion (13) is made by rubber, the reducing tubulose that is hollow, be used for connecting described pipeline (30), pipeline connecting portion (13) is little near the section diameter of described pipeline (30) one sides when mounted, pipeline connecting portion (13) is large with the section diameter that middle interconnecting piece (12) is connected, and the section diameter that described pipeline connecting portion (13) is connected with middle interconnecting piece (12) and the diameter of described pipeline (30) are suitable;
Described middle interconnecting piece (12) is made by rubber, is the tubulose of hollow, and a side of middle interconnecting piece (12) is connected with manhole connecting portion (11), and opposite side is connected with pipeline connecting portion (13).
2. connector as claimed in claim 1 (10), it is characterized in that, described pipeline connecting portion (13) comprises three parts: tubular body (131), installation sleeve (133) and connect described tubular body (131) and the spacer shell (132) of installation sleeve (133);
Described tubular body (131) is the part that pipeline connecting portion (13) is connected with middle interconnecting piece (12), described installation sleeve (133) is pipeline connecting portion (13) part of close described pipeline (30) one sides when mounted, and described spacer shell (132) is horn-like.
3. connector as claimed in claim 1 (10), is characterized in that, the outer wall undulate of described middle interconnecting piece (12).
4. connector as claimed in claim 1 (10), is characterized in that, is provided with the quoit (121) for increasing intensity on described middle interconnecting piece (12).
5. connector as claimed in claim 4 (10), is characterized in that, described quoit (121) is steel wire, and described steel wire adopts vacuum canoe to be arranged on described middle interconnecting piece (12).
6. connector as claimed in claim 1 (10), is characterized in that, between described connector (10) and manhole well seat (21), by socket joint, is connected, and described manhole connecting portion (11) is made by the rubber of high rigidity; Or between described connector (10) and manhole well seat (21), by pyrocondensation bag, be connected, described manhole connecting portion (11) is made of plastics; Or between described connector (10) and manhole well seat (21), by flange, be connected, the flange (40) on described manhole connecting portion (11) is made of metal;
When being connected by socket joint between described connector (10) and manhole well seat (21), on the outer wall of described manhole connecting portion (11), be provided with at least two circle projections (111), the outermost circle projection (111) arranging on the outer wall of described manhole connecting portion (11) is hook-shaped, described hook-shaped projection (111) is for the sealing between manhole connecting portion (11) and the joint (23) of manhole well seat (21), and remaining projection (111) is for the location between manhole connecting portion (11) and the joint (23) of manhole well seat (21).
7. the connector (10) as described in claim 1-6 any one, is characterized in that, described middle interconnecting piece (12) and pipeline connecting portion (13) are made by the elastomeric material of soft.
8. a manhole (20), comprise manhole well seat (21), it is characterized in that, joint (23) one sides at manhole well seat (21) are provided with the connector (10) as described in claim 1-7 any one, the joint (23) of connector (10) and manhole well seat (21) is processed into one, or between connector (10) and manhole well seat (21) by socket joint be connected, the connection of pyrocondensation bag or flange connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403017.7U CN203977454U (en) | 2014-07-21 | 2014-07-21 | The connector of manhole and well seat and pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403017.7U CN203977454U (en) | 2014-07-21 | 2014-07-21 | The connector of manhole and well seat and pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203977454U true CN203977454U (en) | 2014-12-03 |
Family
ID=51974913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420403017.7U Expired - Fee Related CN203977454U (en) | 2014-07-21 | 2014-07-21 | The connector of manhole and well seat and pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203977454U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088299A (en) * | 2014-07-21 | 2014-10-08 | 深圳市八达通智能管网系统有限公司 | Connecting piece of inspection well, well base and pipeline and construction mounting method of connecting piece |
| CN105401636A (en) * | 2015-12-18 | 2016-03-16 | 成都美沃实机电科技有限公司 | Drainage inspection well base with flange end |
| CN114250809A (en) * | 2021-12-02 | 2022-03-29 | 重庆安特管业有限公司 | Integrated winding forming solid wall inspection well |
| CN115750973A (en) * | 2022-11-18 | 2023-03-07 | 中国十九冶集团有限公司 | Connecting structure and connecting method for nodular cast iron pipe and plastic inspection well |
-
2014
- 2014-07-21 CN CN201420403017.7U patent/CN203977454U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088299A (en) * | 2014-07-21 | 2014-10-08 | 深圳市八达通智能管网系统有限公司 | Connecting piece of inspection well, well base and pipeline and construction mounting method of connecting piece |
| CN105401636A (en) * | 2015-12-18 | 2016-03-16 | 成都美沃实机电科技有限公司 | Drainage inspection well base with flange end |
| CN114250809A (en) * | 2021-12-02 | 2022-03-29 | 重庆安特管业有限公司 | Integrated winding forming solid wall inspection well |
| CN115750973A (en) * | 2022-11-18 | 2023-03-07 | 中国十九冶集团有限公司 | Connecting structure and connecting method for nodular cast iron pipe and plastic inspection well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20160721 |
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| CF01 | Termination of patent right due to non-payment of annual fee |