CN104033676A - Pipeline joint - Google Patents
Pipeline joint Download PDFInfo
- Publication number
- CN104033676A CN104033676A CN201410220675.7A CN201410220675A CN104033676A CN 104033676 A CN104033676 A CN 104033676A CN 201410220675 A CN201410220675 A CN 201410220675A CN 104033676 A CN104033676 A CN 104033676A
- Authority
- CN
- China
- Prior art keywords
- cast iron
- diameter
- linkage section
- plastic tube
- seal ring
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
- F16L47/24—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics for joints between metal and plastics pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Sleeves (AREA)
Abstract
The invention discloses a pipeline joint. The pipeline joint comprises a cylindrical two-way joint body, wherein a reducing through hole is formed in the two-way joint body in the radial direction and comprises a plastic pipe connection section, a transition section and a cast iron connection section, the inner diameter of the plastic pipe connection section is matched with the outer diameter of the shoulder step at the end of a plastic pipe, the plastic pipe connection section is provided with inner threads, the shoulder step at the end of the plastic pipe is provided with outer threads matched with the inner threads, the inner diameter of the cast iron connection section is matched with the outer diameter of a cast iron pipe, and the transition section is conical. Compared with the prior art, the pipeline joint has the advantages that only one pipeline joint is needed for connection between the plastic pipe and the cast iron pipe with the diameter being different from that of the plastic pipe, the pipeline joint is connected with the plastic pipe through the threads and connected with the cast iron pipe in a welded mode, the connection mode is simple, operation is convenient and rapid, and work efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of pipe coupling.
Background technique
Along with expanding economy, the quickening of urbanization process, supporting piping facility is also indispensable, town water supply need to be used water supply pipe, urban sewage discharge needs blow-off line, and rock gas transports needs natural gas line, and the connection sealing between pipeline is quite important.
In pipeline construction process, often plastic tube need to be connected with cast iron tube, but because damping is different, both calibers are different, and the caliber of plastic tube is less than the caliber of cast iron tube, so just need to use three flanges when connecting, be respectively plastic tube end flange, counter flange and cast iron end flange, this kind of Placement, flange quantity is many, during installation, bother very much, reduced working efficiency.
Summary of the invention
The problems referred to above that the present invention need to solve are for above-mentioned the deficiencies in the prior art, and a kind of pipe coupling is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of pipe coupling, comprise a columniform bidirectional joint, bidirectional joint inside is axially arranged with reducing through hole, described reducing through hole comprises three sections: plastic tube linkage section, changeover portion and cast iron linkage section, the external diameter on the internal diameter of described plastic tube linkage section and the shoulder rank of plastics pipe end is suitable, and be provided with internal thread at plastic tube linkage section, on the shoulder rank of plastics pipe end, be provided with the outside thread matching with internal thread, the described internal diameter of cast iron linkage section and the external diameter of cast iron tube are suitable, described changeover portion is conical, the diameter of the small end of changeover portion and the internal diameter of plastic tube are suitable, the diameter of the large end of changeover portion and the internal diameter of cast iron tube are suitable.
The length of described bidirectional joint is 5-15cm.
The length of described bidirectional joint is 10cm.
Between bidirectional joint and cast iron tube, be fixedly connected by welding.
In the joint of plastic tube linkage section and plastic tube, be provided with the first seal ring, the external diameter of the first described seal ring and the internal diameter of plastic tube linkage section are suitable, and the internal diameter of the first described seal ring and the diameter of changeover portion small end are suitable.
In the joint of cast iron linkage section and cast iron tube, be provided with the second seal ring, the external diameter of the second described seal ring and the internal diameter of cast iron linkage section are suitable, so the internal diameter of the second described seal ring and the diameter of the large end of changeover portion are suitable.
Compared with prior art, the invention has the beneficial effects as follows: connect not identical plastic tube and the cast iron tube of caliber and only need a pipe coupling, pipe coupling and plastic tube are threaded connection, pipe coupling and cast iron tube are by being welded to connect, Placement is simple, simple operation, increases work efficiency greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of pipe coupling of the present invention;
Fig. 2 is the connection diagram of pipe coupling and plastic tube and cast iron tube.
Wherein, 1, bidirectional joint, 2, reducing through hole, 3, plastic tube linkage section, 4, changeover portion, 5, cast iron linkage section, 6, plastic tube, 7, cast iron tube, the 8, first seal ring, the 9, second seal ring.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention is only described in a schematic way, so it only show the formation relevant with the present invention.
As shown in Figure 1, a kind of pipe coupling, comprise a columniform bidirectional joint 1, bidirectional joint 1 inside is axially arranged with reducing through hole 2, described reducing through hole 2 comprises three sections: plastic tube linkage section 3, changeover portion 4 and cast iron linkage section 5, the external diameter on the shoulder rank of the internal diameter of described plastic tube linkage section 3 and plastic tube 6 ends is suitable, and be provided with internal thread at plastic tube linkage section 3, on the shoulder rank of plastic tube 6 ends, be provided with the outside thread matching with internal thread, the internal diameter of described cast iron linkage section 5 and the external diameter of cast iron tube 7 are suitable, described changeover portion 4 is conical, the internal diameter of the diameter of the small end of changeover portion 4 and plastic tube 6 is suitable, the internal diameter of the diameter of the large end of changeover portion 4 and cast iron tube 7 is suitable.
The length of described bidirectional joint 1 is 5-15cm.
The length of described bidirectional joint 1 is 10cm.
Between bidirectional joint 1 and cast iron tube 7, be fixedly connected by welding.
In plastic tube linkage section 3 and the joint of plastic tube 6, be provided with the first seal ring 8, the external diameter of the first described seal ring 8 and the internal diameter of plastic tube linkage section 3 are suitable, and the diameter of the internal diameter of the first described seal ring 8 and changeover portion 4 small ends is suitable.
In cast iron linkage section 5 and the joint of cast iron tube 7, be provided with the second seal ring 9, the external diameter of the second described seal ring 9 and the internal diameter of cast iron linkage section 5 are suitable, so the diameter of the internal diameter of the second described seal ring 9 and changeover portion 4 large ends is suitable.
When assembling, first the first seal ring 8 is put into plastic tube linkage section 3 inner chambers, then plastic tube 6 to be passed through, in screw thread precession plastic tube linkage section 3, to guarantee to screw, arranging of the first seal ring 8 can effectively prevent from leaking, and strengthened the effect of sealing; And then assembling cast iron tube 7, first the second seal ring 9 is put into cast iron linkage section 5, then cast iron tube 7 is inserted in to cast iron linkage section 5, guarantee that suit puts in place, and then by welding, cast iron tube 7 is fixedly connected with cast iron linkage section 5, and arranging of the second seal ring 9 can effectively prevent from leaking, and strengthened the effect of sealing.
Compared with prior art, the invention has the beneficial effects as follows: connect not identical plastic tube and the cast iron tube of caliber and only need a pipe coupling, pipe coupling and plastic tube are threaded connection, pipe coupling and cast iron tube are by being welded to connect, Placement is simple, simple operation, increases work efficiency greatly.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to claim scope.
Claims (6)
1. a pipe coupling, it is characterized in that: comprise a columniform bidirectional joint, bidirectional joint inside is axially arranged with reducing through hole, described reducing through hole comprises three sections: plastic tube linkage section, changeover portion and cast iron linkage section, the external diameter on the internal diameter of described plastic tube linkage section and the shoulder rank of plastics pipe end is suitable, and be provided with internal thread at plastic tube linkage section, on the shoulder rank of plastics pipe end, be provided with the outside thread matching with internal thread, the described internal diameter of cast iron linkage section and the external diameter of cast iron tube are adaptive, described changeover portion is conical, the diameter of the small end of changeover portion and the internal diameter of plastic tube are suitable, the diameter of the large end of changeover portion and the internal diameter of cast iron tube are suitable.
2. pipe coupling according to claim 1, is characterized in that: the length of described bidirectional joint is 5-15cm.
3. pipe coupling according to claim 2, is characterized in that: the length of described bidirectional joint is 10cm.
4. pipe coupling according to claim 1, is characterized in that: between bidirectional joint and cast iron tube, be fixedly connected by welding.
5. pipe coupling according to claim 1, it is characterized in that: in the joint of plastic tube linkage section and plastic tube, be provided with the first seal ring, the external diameter of the first described seal ring and the internal diameter of plastic tube linkage section are suitable, and the internal diameter of the first described seal ring and the diameter of changeover portion small end are suitable.
6. pipe coupling according to claim 1, it is characterized in that: in the joint of cast iron linkage section and cast iron tube, be provided with the second seal ring, the external diameter of the second described seal ring and the internal diameter of cast iron linkage section are suitable, so the internal diameter of the second described seal ring and the diameter of the large end of changeover portion are suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410220675.7A CN104033676A (en) | 2014-05-23 | 2014-05-23 | Pipeline joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410220675.7A CN104033676A (en) | 2014-05-23 | 2014-05-23 | Pipeline joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104033676A true CN104033676A (en) | 2014-09-10 |
Family
ID=51464570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410220675.7A Pending CN104033676A (en) | 2014-05-23 | 2014-05-23 | Pipeline joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104033676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514355A (en) * | 2014-12-12 | 2015-04-15 | 重庆万马屯新型建材有限公司 | Connecting piece for flue |
| CN105485396A (en) * | 2015-12-28 | 2016-04-13 | 苏州林信源自动化科技有限公司 | Connector for valve body air chamber |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4969666A (en) * | 1989-08-03 | 1990-11-13 | Wagner Spray Tech Corporation | Paint tubing flushing adapter |
| CN2073966U (en) * | 1990-03-23 | 1991-03-27 | 辽宁省盘山县农村改水项目办公室 | Connecting piece for special pipe |
| DE19842328A1 (en) * | 1998-09-16 | 1999-03-18 | Oliver Matusan | One-piece seal for pipe union |
| CN201844135U (en) * | 2010-10-12 | 2011-05-25 | 衡阳鸿菱石油管材有限责任公司 | Pipe reducing union |
| CN102644814A (en) * | 2012-04-23 | 2012-08-22 | 中国农业大学 | Large-diameter variable-diameter pipe joint and its manufacturing method |
| CN202419013U (en) * | 2011-11-28 | 2012-09-05 | 北华航天工业学院 | Self-tapping threaded reducing pipe joint |
-
2014
- 2014-05-23 CN CN201410220675.7A patent/CN104033676A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4969666A (en) * | 1989-08-03 | 1990-11-13 | Wagner Spray Tech Corporation | Paint tubing flushing adapter |
| CN2073966U (en) * | 1990-03-23 | 1991-03-27 | 辽宁省盘山县农村改水项目办公室 | Connecting piece for special pipe |
| DE19842328A1 (en) * | 1998-09-16 | 1999-03-18 | Oliver Matusan | One-piece seal for pipe union |
| DE19842328C2 (en) * | 1998-09-16 | 2000-05-18 | Oliver Matusan | One-piece sealing element for pipe connections |
| CN201844135U (en) * | 2010-10-12 | 2011-05-25 | 衡阳鸿菱石油管材有限责任公司 | Pipe reducing union |
| CN202419013U (en) * | 2011-11-28 | 2012-09-05 | 北华航天工业学院 | Self-tapping threaded reducing pipe joint |
| CN102644814A (en) * | 2012-04-23 | 2012-08-22 | 中国农业大学 | Large-diameter variable-diameter pipe joint and its manufacturing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514355A (en) * | 2014-12-12 | 2015-04-15 | 重庆万马屯新型建材有限公司 | Connecting piece for flue |
| CN105485396A (en) * | 2015-12-28 | 2016-04-13 | 苏州林信源自动化科技有限公司 | Connector for valve body air chamber |
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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: 20140910 |