CN203727980U - Manhole cover - Google Patents
Manhole cover Download PDFInfo
- Publication number
- CN203727980U CN203727980U CN201420125412.3U CN201420125412U CN203727980U CN 203727980 U CN203727980 U CN 203727980U CN 201420125412 U CN201420125412 U CN 201420125412U CN 203727980 U CN203727980 U CN 203727980U
- Authority
- CN
- China
- Prior art keywords
- cover
- manhole
- grommet
- seal groove
- annular seal
- 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 - Lifetime
Links
- 238000004080 punching Methods 0.000 claims abstract description 7
- 230000003044 adaptive effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses a manhole cover. The manhole cover comprises a punching cover, a manhole neck strap component and a cover bush ring, wherein the manhole neck strap component is arranged in a manhole, and the cover bush ring is matched with the punching cover; a circle of turnup which downwards extends is formed by punching the edge of the punching cover, an annular seal groove is arranged at the bottom of the cover bush ring, and a seal ring is arranged in the annular seal groove; the interference fit is realized between the seal ring and the annular seal groove, the outer wall of the cover bush ring is matched with the inner wall of the turnup, and the cover bush ring and the turnup are fixed by adopting welding. The manhole cover provided by the utility model is simple to assemble, the intensity of the manhole cover can be improved, and the production cost and the maintenance cost in the late using process can be reduced.
Description
Technical field
The utility model relates to a kind of sealing element, particularly a kind of for sealing the manhole cover of manhole structure on bulk bin or tank car.
Background technology
At present bulk bin (taking cement bulk tank and each oil tank as representative) and tank container all can configure one or more manholes, be convenient to people enter in tank and clean, safeguard and check by manhole, replace inlet point if desired, lifting charging ability with manhole.Conventionally on manhole, be provided with manhole cover, at charging rear enclosed manhole.Available technology adopting glue is bonded at seal ring on manhole cover.The method easily causes in use displacement of seal ring or comes off, and then affects sealing effectiveness.
Utility model content
For above-mentioned prior art, the utility model provides a kind of intensity high, good sealing effect, and convenient later maintenance, integrated cost is low, and fitting process manhole cover easily.
In order to solve the problems of the technologies described above, a kind of manhole cover of the utility model, comprises stamping cover, is arranged on the manhole neck ring assembly at manhole place and the lid grommet with described stamping cover adaptation; Edge's punching press of described stamping cover is formed with the circle flange to downward-extension, the bottom of described lid grommet is provided with an annular seal groove, in described annular seal groove, be provided with seal ring, between described seal ring and described annular seal groove, it is interference fit, the outer wall of described lid grommet matches with the inwall of described flange, between described lid grommet and described flange, adopts and is welded and fixed.
Wherein, the center of top of described stamping cover is sphere crowned.
Compared with prior art, the beneficial effects of the utility model are:
Manhole cover of the present utility model assembling is simple, and on lid grommet, turning forms seal groove, and its dimensional accuracy is high, good with the suitability of the seal ring of each material, save the later stage change, maintenance cost is low.By covering being welded and fixed of grommet and people's hole flanging place, significantly improved the intensity of manhole cover simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model manhole cover embodiment;
Fig. 2 is the structural representation of stamping cover shown in Fig. 1 and lid grommet part;
Fig. 3 is the structural representation of stamping cover shown in Fig. 2.
In figure: 1-stamping cover, 11-flange, 2-covers grommet, 21-seal groove, 3-seal ring, 4-manhole neck ring assembly.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in further detail.
As shown in Figure 1, a kind of manhole cover of the utility model, comprises and is arranged on the manhole neck ring assembly 4, stamping cover 1 at manhole place and the lid grommet 2 with described stamping cover 1 adaptation; Edge's punching press of described stamping cover 1 is formed with the circle flange 11 to downward-extension, the center of top of described stamping cover 1 is sphere crowned, the direct punch forming of steel plate that this stamping cover 1 can be selected appropriate size, the outer wall of described lid grommet 2 match with the inwall of described flange 11 (covering the external diameter of grommet 2 and the internal orifice diameter of flange 11 to suitable), between described lid grommet 2 and described flange 11, adopt and be welded and fixed, weld at the contact position of both bottoms, thereby stamping cover 1 and lid grommet 2 are permanently fixed to assembling.The bottom of described lid grommet 2 is provided with the circle annular seal groove that Open Side Down 21, this annular seal groove 21 adopts turning processing, its precision is higher, in described annular seal groove 21, be provided with seal ring 3, described seal ring 3 can adopt any material to make, between described seal ring 3 and described annular seal groove 21, it is interference fit, can by with the seal ring 3 indentation sealing grooves 3 of any material of seal ring interference fit in, in the time that the stamping cover 1 of weld together covers with manhole neck ring assembly 4 with lid grommet 2, seal ring 3 can actv. get up Manhole Sealing Joints, thereby play the sealing effectiveness to bulk bin or tank car.
Although the utility model is described in conjunction with figure above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; in the situation that not departing from the utility model aim, can also make a lot of distortion, within these all belong to protection of the present utility model.
Claims (2)
1. a manhole cover, comprises stamping cover (1), it is characterized in that, also comprises and is arranged on the manhole neck ring assembly (4) at manhole place and the lid grommet (2) adaptive with described stamping cover (1); Edge's punching press of described stamping cover (1) is formed with the circle flange (11) to downward-extension, the bottom of described lid grommet (2) is provided with an annular seal groove (21), in described annular seal groove (21), be provided with seal ring (3), between described seal ring (3) and described annular seal groove (21), it is interference fit, the outer wall of described lid grommet (2) matches with the inwall of described flange (11), between described lid grommet (2) and described flange (11), adopts and is welded and fixed.
2. manhole cover according to claim 1, is characterized in that, the center of top of described stamping cover (1) is sphere crowned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125412.3U CN203727980U (en) | 2014-03-19 | 2014-03-19 | Manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125412.3U CN203727980U (en) | 2014-03-19 | 2014-03-19 | Manhole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203727980U true CN203727980U (en) | 2014-07-23 |
Family
ID=51198070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420125412.3U Expired - Lifetime CN203727980U (en) | 2014-03-19 | 2014-03-19 | Manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203727980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106697651A (en) * | 2017-02-07 | 2017-05-24 | 兴化市苏星金属制品有限公司 | Manhole flange |
-
2014
- 2014-03-19 CN CN201420125412.3U patent/CN203727980U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106697651A (en) * | 2017-02-07 | 2017-05-24 | 兴化市苏星金属制品有限公司 | Manhole flange |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Frame for a manhole cover Effective date of registration: 20150421 Granted publication date: 20140723 Pledgee: The Bank of Cangzhou branch of Yuhe Limited by Share Ltd. Pledgor: HEBEI GUANGDE FLUID CONTROL LTD. Registration number: 2015990000306 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
|
| CX01 | Expiry of patent term |