CN102162563A - Cast pipe coating plug - Google Patents
Cast pipe coating plug Download PDFInfo
- Publication number
- CN102162563A CN102162563A CN2010105875980A CN201010587598A CN102162563A CN 102162563 A CN102162563 A CN 102162563A CN 2010105875980 A CN2010105875980 A CN 2010105875980A CN 201010587598 A CN201010587598 A CN 201010587598A CN 102162563 A CN102162563 A CN 102162563A
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- China
- Prior art keywords
- cavity
- plug
- coated
- main body
- cast
- 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.)
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to a plug used for stemming two ends of a centrifugation nodular cast iron pipe amid the cement coating of the nodular cast iron pipe. Provided is a cast pipe coating plug comprising: a main body made of elastomeric material, a cavity inside the main body and capable of being inflated for expanding the plug, and an inflation connector for inflating the cavity. The cast pipe coating plug of the invention is characterized by the round and smooth edge of the cross section shape of the cavity. According to the invention, the square cavity in the cast pipe coating plug, which has edge angles, is changed into the cavity with round and smooth cross section shape, therefore, the cast pipe coating plug can avoid rupture caused by stress concentration and accordingly realizes the objective of saving production cost.
Description
Technical field
What the present invention relates to centrifugal ductile cast iron pipes is coated with lining technology, relates in particular to a kind of centrifugal ductile cast iron pipes that is used for and is coated with the plug that the lining process is blocked the pipe two ends at cement.
Background technique
In the centrifugal ductile cast iron pipes production process, need carry out cement to tube wall and be coated with lining, just to tube wall lining one deck cement, technology is to pour in the pipe stirring cement slurry, utilize the high speed rotating of lining coating machine to make cement slurry be centrifuged into lining, in centrifugal process, need the two ends of pipe are blocked and prevent that cement from flowing away from two ends at tube interior.Do not come off in order to make plug can be stuck in the pipe two ends, plug uses rubber to make, and inside has cavity to inflate, and is inflated to a certain degree just to block pipe and be unlikely to come off.
The plug that uses as shown in Figure 1 at present, the sectional shape of its internal cavities is square, in gas replenishment process, because the unbalanced stress that inwall and place, four angles are subjected to is even, cause plug to be scrapped because break easily, for reducing the waste that plug breaks and causes, save cost, need improve plug.
Summary of the invention
In order to overcome the technical problem of above-mentioned existence, the invention provides a kind of cast tube and be coated with the lining plug, comprise main body, make by elastic material; Be positioned at the cavity of described main body, can charge into gas in the described cavity so that described plug is expanded; And charging air inlet, be used for it is characterized in that to described cavity inflation the edge of the sectional shape of described cavity is slick and sly.
Described elastic material can be a rubber.
The shape of described circular crosssection can be for circular or oval.
The described main body of plug can be designed as by thicker peripheral part and thin intermediate portion to be formed, and described cavity is arranged in described peripheral part.
Described cavity can be for circular.
Description of drawings
Figure 1A is the front view that cast tube of the prior art is coated with the lining plug.
Figure 1B is the sectional view along the line A-A among Figure 1A.
Fig. 2 A is the front view that cast tube of the present invention is coated with the lining plug.
Fig. 2 B is the sectional view along the line B-B among Fig. 2 A.
Explanation about reference character:
1 cavity
2 charging air inlets
3 main bodys
4 peripheral parts
5 intermediate portions
Embodiment
Cast tube of the present invention is coated with the lining plug as shown in Figure 2, and it comprises main body 3, and main body is made by elastic material, the preferred rubber material; Be positioned at the cavity 1 of main body 3, can charge into gas in the cavity 1 so that described plug is expanded; With charging air inlet 2, be used for to cavity 1 inflation, the edge of the sectional shape of cavity 1 is slick and sly, thereby cavity 1 inwall stressed evenly being difficult for broken.
The sectional shape of cavity 1 can be chosen as circle or ellipse according to the thickness of main body 3.
In order to guarantee to save manufacture cost under the prerequisite of sealing, and make plug have bigger elasticity after inflation, the main body 3 of plug can be designed to be made up of thicker peripheral part 4 and thin intermediate portion 5, cavity 1 is arranged in peripheral part 5.
The present invention is coated with the square cavity that has corner angle in the lining plug with cast tube and changes the cavity with slick and sly sectional shape into, has so just avoided stress to concentrate breaking of causing, thereby has reached the purpose that saves production cost.
Claims (6)
1. a cast tube is coated with the lining plug, comprises
Main body is made by elastic material;
Be positioned at the cavity of described main body, can charge into gas in the described cavity and expand so that make described cast tube be coated with the lining plug; With
Charging air inlet is used for to described cavity inflation,
It is characterized in that the edge of the sectional shape of described cavity is slick and sly.
2. cast tube as claimed in claim 1 is coated with the lining plug, and wherein said main body is made by rubber.
3. cast tube as claimed in claim 1 is coated with the lining plug, and the sectional shape of wherein said cavity is circular.
4. cast tube as claimed in claim 1 is coated with the lining plug, and the sectional shape of wherein said cavity is oval.
5. cast tube as claimed in claim 1 is coated with the lining plug, and wherein said main body is made up of peripheral part and intermediate portion, and described peripheral part has the thickness thicker than described intermediate portion, and described cavity is arranged in described peripheral part.
6. cast tube as claimed in claim 1 is coated with the lining plug, and described cavity is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105875980A CN102162563A (en) | 2010-12-15 | 2010-12-15 | Cast pipe coating plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105875980A CN102162563A (en) | 2010-12-15 | 2010-12-15 | Cast pipe coating plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102162563A true CN102162563A (en) | 2011-08-24 |
Family
ID=44463939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105875980A Pending CN102162563A (en) | 2010-12-15 | 2010-12-15 | Cast pipe coating plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102162563A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882608A (en) * | 2019-03-19 | 2019-06-14 | 温州职业技术学院 | Isolation vortex control formula ends pipe valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2175346Y (en) * | 1993-10-08 | 1994-08-24 | 天津市市政工程研究所 | Plate type sealing plug for pipe |
| DE10113372A1 (en) * | 2001-03-20 | 2002-10-02 | Guenter Schulte | Air pipeline closing device has closer consisting of at least one one-way-opening diaphratgm |
| CN2541702Y (en) * | 2002-04-14 | 2003-03-26 | 井朝纲 | Inflatted rubber tyre |
| CN2557782Y (en) * | 2002-04-29 | 2003-06-25 | 马鞍山宏力橡胶制品有限公司 | Insert inlet all rubber inflated rubber mould |
| CN2567430Y (en) * | 2002-08-22 | 2003-08-20 | 井朝纲 | Plug end frame for cast tube inner wall covering |
| CN201106733Y (en) * | 2007-10-30 | 2008-08-27 | 江西泰达长林特种设备有限责任公司 | Low pressure aerosphere plugging apparatus |
| CN201326869Y (en) * | 2008-11-27 | 2009-10-14 | 秦山核电有限公司 | Inflatable closure plug |
| CN201988499U (en) * | 2010-12-15 | 2011-09-28 | 高平市泫氏铸管有限公司 | Plug for cast pipe coating |
-
2010
- 2010-12-15 CN CN2010105875980A patent/CN102162563A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2175346Y (en) * | 1993-10-08 | 1994-08-24 | 天津市市政工程研究所 | Plate type sealing plug for pipe |
| DE10113372A1 (en) * | 2001-03-20 | 2002-10-02 | Guenter Schulte | Air pipeline closing device has closer consisting of at least one one-way-opening diaphratgm |
| CN2541702Y (en) * | 2002-04-14 | 2003-03-26 | 井朝纲 | Inflatted rubber tyre |
| CN2557782Y (en) * | 2002-04-29 | 2003-06-25 | 马鞍山宏力橡胶制品有限公司 | Insert inlet all rubber inflated rubber mould |
| CN2567430Y (en) * | 2002-08-22 | 2003-08-20 | 井朝纲 | Plug end frame for cast tube inner wall covering |
| CN201106733Y (en) * | 2007-10-30 | 2008-08-27 | 江西泰达长林特种设备有限责任公司 | Low pressure aerosphere plugging apparatus |
| CN201326869Y (en) * | 2008-11-27 | 2009-10-14 | 秦山核电有限公司 | Inflatable closure plug |
| CN201988499U (en) * | 2010-12-15 | 2011-09-28 | 高平市泫氏铸管有限公司 | Plug for cast pipe coating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882608A (en) * | 2019-03-19 | 2019-06-14 | 温州职业技术学院 | Isolation vortex control formula ends pipe valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110824 |