CN201902749U - Sealing bush for steel-plastic composite pipe - Google Patents
Sealing bush for steel-plastic composite pipe Download PDFInfo
- Publication number
- CN201902749U CN201902749U CN2010205686414U CN201020568641U CN201902749U CN 201902749 U CN201902749 U CN 201902749U CN 2010205686414 U CN2010205686414 U CN 2010205686414U CN 201020568641 U CN201020568641 U CN 201020568641U CN 201902749 U CN201902749 U CN 201902749U
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- CN
- China
- Prior art keywords
- steel
- plastic composite
- composite pipe
- section
- lining
- 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
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model provides a sealing bush for a steel-plastic composite pipe, which comprises a barrel-shaped inserting section and an annular flange section, wherein the barrel-shaped inserting section is inserted into the steel-plastic composite pipe, the annular flange section is positioned at the pipe orifice end of the steel-plastic composite pipe, and the outer surface of the inserting section is also provided with anti-dropping teeth. The sealing bush can effectively prevent loosening and protect a bonding position between the metal pipe and a composite material from being exposed outside, thereby preventing the metal layer on the section of the end of the steel-plastic composite pipe from being rusted due to water flushing in the using process and preventing the composite material on the inner wall of the steel-plastic composite pipe from delaminating or dropping.
Description
Technical field
The utility model belongs to the bush structure field of sealing of steel-plastic composite pipe.
Background technique
Steel-plastic composite pipe can be widely used in FLUID TRANSPORTATION and heating engineerings such as tap water, coal gas, chemical product, receives praises from customers.But there is following defective in it in popularizing using process: the pipeline section of the frequent sawed-off one-tenth different length of needs in the piping erection process, make outside the section metallic material of pipe end and the bonding position between metal tube and the composite material be exposed to, steel-plastic composite pipe section metal layer is got rusty and composite material comes off or the absciss layer phenomenon, thereby shortened the working life of steel-plastic composite pipe, increased steel-plastic composite pipe generation deformation.
At domestic existing disclosed technology, as Chinese patent application number is 200820127860.1,200720078500.2 and 00249473.6 etc. all to exist the plastic bushing of installing on the steel-plastic composite pipe to get loose easily, pipe phenomenon results in blockage, but also can cause steel-plastic composite pipe section metal layer to get rusty, and composite material comes off or the absciss layer phenomenon, haves much room for improvement.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art; providing a kind of can effectively prevent to get loose and protect outside bonding position is not exposed between metal tube and the composite material; prevent washing away of current in the using process and cause the metal layer corrosion for the section of steel-plastic composite pipe end, and prevent the steel-plastic composite pipe inwall composite material absciss layer or come off seal lining.
In order to realize above-mentioned model utility purpose, the technological scheme of employing is as follows:
A kind of lining that seals that is used for steel-plastic composite pipe comprises that the tubular that is inserted into steel-plastic composite pipe inside inserts section, and the annular flange section that is positioned at the steel-plastic composite pipe nose end, and the outer surface of described insertion section also is provided with the anticreep tooth.After bronze drum anticreep tooth makes that the utility model is inserted into steel-plastic composite pipe, can closely connect, can in use not come off.
In the technique scheme, the screw thread path of the external diameter of described flange section and steel-plastic composite pipe roughly coincide.By this structure, make things convenient for the installation in the implementation process, effectively prevent existing screw thread class pipe fitting and the difficult problem of tubing installation.
The described external diameter that inserts section is a bit larger tham the internal diameter of steel-plastic composite pipe, makes that the insertion section and the pipe internal diameter of steel-plastic composite pipe are interference fit, has further strengthened the tightness that connects.
The port part of inserting section described in the utility model is provided with chamfering structure, and the convenient section of inserting is inserted into steel-plastic composite pipe inside.
Anticreep tooth described in the utility model is a circle or an above thread of circle or a pawl in the form of a ring, the number of turns of anticreep tooth is more than 1 circle, shape can be a thread, it both can be the single screw thread tooth, it also can be the multiple thread tooth, or pawl in the form of a ring, seal lining after guaranteeing to install and be difficult for coming off from steel-plastic composite pipe.
Further, 1/4～3/4 of the described anticreep tooth height composite material layer thickness that is steel-plastic composite pipe.
The junction of described flange section and insertion section also is provided with sealing gasket; the lining that seals of the present utility model is provided with a rubber gasket; outside bonding position is not exposed between protection metal tube of steel-plastic composite pipe and the composite material, prevents washing away of current in the using process and cause the absciss layer or the obscission of the composite material of metal layer corrosion and steel-plastic composite pipe inwall for the section of steel-plastic composite pipe end.
The lining that seals of the present utility model adopts and to have plastics certain rigidity, that meet sanitation performance or metal is a raw material, is applicable to the steel-plastic composite pipe clip connected or the pipeline system that is threaded.
Compared with prior art, the beneficial effects of the utility model are as follows:
1, the external diameter that seals lining flange section is the screw thread path of steel-plastic composite pipe, can prevent the difficult installation question of screw thread class pipe fitting and tubing;
2, seal a lining insertion section external diameter and become interference fit, and be provided with the anticreep tooth, seal lining after can guaranteeing to install and be difficult for coming off from steel-plastic composite pipe at the outer surface that seals lining with the steel-plastic composite pipe internal diameter;
3, seal the port part that lining inserts section and be provided with chamfering, make things convenient for its installation;
4, seal lining and be provided with a rubber gasket, play the effect of protection steel-plastic composite pipe end, prevent washing away of current in the using process and give the absciss layer of the composite material that the section of steel-plastic composite pipe end causes metal layer corrosion and steel-plastic composite pipe inwall or come off.
Description of drawings
Fig. 1 is the structural representation that seals lining of the present utility model.
Fig. 2 is the structural representation that seals after lining is installed.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Structure of the present utility model as shown in Figure 1, sealing lining is flange-like, one end outer rim is provided with annular flange 1, the external diameter φ D of annular flange 1 is the screw thread path of steel-plastic composite pipe 6, the insertion section external diameter Φ d and steel-plastic composite pipe 6 internal diameters that seal lining are big slightly, make and seal lining and steel-plastic composite pipe 6 interference fit, and being provided with anticreep tooth 2 in the outer rim of inserting section, its number of turns is that the shape of tooth can be a thread more than 1 circle, it both can be the single screw thread tooth, also can be the multiple thread tooth, or pawl in the form of a ring, seal lining after guaranteeing to install and be difficult for coming off from steel-plastic composite pipe, the port part of sealing lining insertion section also is provided with chamfering 3, the convenient installation.
Structure when the utility model uses as shown in Figure 2; wherein; seal lining and also be provided with a rubber gasket 4; in the protection steel-plastic composite pipe; outside bonding position is not exposed between metal tube and the composite material 5; prevent washing away of current in the using process and cause the absciss layer or the obscission of the composite material 5 of metal layer corrosion and steel-plastic composite pipe 6 inwalls for the section of steel-plastic composite pipe end, cause problem water pollution.
Claims (7)
1. the lining that seals that is used for steel-plastic composite pipe comprises that the tubular that is inserted into steel-plastic composite pipe inside inserts section, and the annular flange section that is positioned at the steel-plastic composite pipe nose end, it is characterized in that the described outer surface that inserts section also is provided with the anticreep tooth.
2. the lining that seals that is used for steel-plastic composite pipe according to claim 1 is characterized in that the external diameter of described flange section and the screw thread path of steel-plastic composite pipe roughly coincide.
3. the lining that seals that is used for steel-plastic composite pipe according to claim 1 is characterized in that the described external diameter that inserts section is a bit larger tham the internal diameter of steel-plastic composite pipe.
4. according to claim 1 or the 3 described linings that seal that are used for steel-plastic composite pipe, it is characterized in that the described port part of inserting section is provided with chamfering structure.
5. the lining that seals that is used for steel-plastic composite pipe according to claim 1 is characterized in that described anticreep tooth is a circle or an above thread of circle or a pawl in the form of a ring.
6. the lining that seals that is used for steel-plastic composite pipe according to claim 1 or 5 is characterized in that 1/4～3/4 of composite material layer thickness that described anticreep tooth height is a steel-plastic composite pipe.
7. the lining that seals that is used for steel-plastic composite pipe according to claim 1 is characterized in that the junction of described flange section and insertion section also is provided with sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205686414U CN201902749U (en) | 2010-10-20 | 2010-10-20 | Sealing bush for steel-plastic composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205686414U CN201902749U (en) | 2010-10-20 | 2010-10-20 | Sealing bush for steel-plastic composite pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902749U true CN201902749U (en) | 2011-07-20 |
Family
ID=44273342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205686414U Expired - Lifetime CN201902749U (en) | 2010-10-20 | 2010-10-20 | Sealing bush for steel-plastic composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201902749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433653A (en) * | 2013-08-02 | 2013-12-11 | 辽河石油勘探局 | Seal welding protection device of composite tube |
| CN109551979A (en) * | 2017-09-23 | 2019-04-02 | 天津市冠通汽车部件制造有限公司 | A kind of bottom right swing arm assembly |
-
2010
- 2010-10-20 CN CN2010205686414U patent/CN201902749U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433653A (en) * | 2013-08-02 | 2013-12-11 | 辽河石油勘探局 | Seal welding protection device of composite tube |
| CN109551979A (en) * | 2017-09-23 | 2019-04-02 | 天津市冠通汽车部件制造有限公司 | A kind of bottom right swing arm assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110720 |
|
| CX01 | Expiry of patent term |