CN204647606U - A kind of pipe joint - Google Patents
A kind of pipe joint Download PDFInfo
- Publication number
- CN204647606U CN204647606U CN201520339877.3U CN201520339877U CN204647606U CN 204647606 U CN204647606 U CN 204647606U CN 201520339877 U CN201520339877 U CN 201520339877U CN 204647606 U CN204647606 U CN 204647606U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- section
- gland nut
- pipe joint
- stiffening 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a kind of pipe joint, especially a kind of pipe joint needing reliable sealing for elastic material, interface section.Comprise stiffening ring, spring tube, connecting rod and be threaded connection the gland nut on connecting rod, stiffening ring is sleeved on the outside of connecting rod, the end of gland nut is provided with annular slot, and stiffening ring is rotatably installed in the draw-in groove of gland nut by the snap ring of its end; Connecting rod is the tubular structure of hollow, connecting rod comprises with externally threaded thread section, with the expansion arc of taper expander and the polished rod section that is arranged between thread section and expansion arc, the external diameter of expansion arc is greater than the external diameter of polished rod section, and described spring tube is sleeved in polished rod section.This pipe joint structure is simple, easy to use, installation is quick, good seal performance.
Description
Technical field
The utility model relates to a kind of pipe joint, especially a kind of pipe joint needing reliable sealing for elastic material, interface section.
Background technique
Connection between pipeline usually adopts and is threaded, but tapping needs special tool on pipeline, wastes time and energy, inefficiency.Existing various pipeline fast mounting link can not solve sealing problem again well.Produce, in life a large amount of use plastic tube, PPR pipe connection need a kind of not only rapid and convenient but also can the connection set of reliable sealing.Chinese patent 2011100218347 discloses one " pipe joint ", be made up of connecting rod and the gland nut be threaded connection on connecting rod, connecting rod is the tubulose of hollow, one end of connecting rod is fixedly connected with taper expander, on connecting rod, the external diameter of expander part is greater than the external diameter of other parts, the other end of connecting rod, with outside thread, the connecting rod between taper expander and gland nut is set with spring tube, and the outside of spring tube is set with stiffening ring.This pipe joint structure is simple, easy to use, installation is quick, good seal performance.But, the integral structure adopting split-type structural between gland nut with stiffening ring or be fixedly connected with, when adopting Split type structure, the axial position between gland nut and stiffening ring is not fixed, once axial position goes beyond the scope, then the effect that is tightly connected cannot be reached; Adopt the structure that integral type is fixedly connected with, although axial distance between the two can be fixed, but stiffening ring is along with rotation time gland nut rotates, resistance to motion is larger, and along with the expansion of the taper expander on connecting rod, frictional force between stiffening ring and pipe fitting is increasing, hinders the performance of sealing effect.
Summary of the invention
The purpose of this utility model be to provide a kind of structure simple, easy to use, install fast, the pipe joint of good seal performance.
The technological scheme that the utility model adopts for technical solution problem is:
A kind of pipe joint described in the utility model comprises stiffening ring, spring tube, connecting rod and is threaded connection the gland nut on connecting rod, described stiffening ring is sleeved on the outside of connecting rod, the end of gland nut is provided with annular slot, and described stiffening ring is rotatably installed in the draw-in groove of gland nut by the snap ring of its end; Described connecting rod is the tubular structure of hollow, connecting rod comprises with externally threaded thread section, with the expansion arc of taper expander and the polished rod section that is arranged between thread section and expansion arc, the external diameter of described expansion arc is greater than the external diameter of polished rod section, and described spring tube is sleeved in polished rod section.
The lower end of described spring tube inner chamber is with the horn mouth mating expansion arc outer surface tapering.
After adopting technique scheme, this pipe joint structure is simple, easy to use, installation is quick, good seal performance.
Accompanying drawing explanation
Fig. 1 is the using state structural representation of the utility model embodiment.
Fig. 2 is the structural representation of gland nut and stiffening ring.
Fig. 3 is the structural representation of spring tube.
Fig. 4 is the structural representation of connecting rod.
Embodiment
As shown in Figure 1, a kind of pipe joint described in the utility model comprises stiffening ring 5, spring tube 4, connecting rod 3 and is threaded connection the gland nut 2 on connecting rod 3, described stiffening ring 5 is sleeved on the outside of connecting rod 3, the end of gland nut 2 is provided with annular slot, and described stiffening ring 5 is rotatably installed in the draw-in groove of gland nut 2 by the snap ring 51 of its end; As shown in Figure 4, described connecting rod 3 is the tubular structure of hollow, connecting rod 3 comprises with externally threaded thread section 31, with the expansion arc 33 of taper expander and the polished rod section 32 that is arranged between thread section 31 and expansion arc 33, the external diameter of described expansion arc 33 is greater than the external diameter of polished rod section 32, and described spring tube 4 is sleeved in polished rod section 32.
The lower end of described spring tube inner chamber is with the horn mouth mating expansion arc 33 outer surface tapering.
The material manufacture that elastomer 4 can adopt the elasticity such as rubber, plastics stronger.Certainly, copper, aluminium or elasticity, alloy material that ductility is good can also be adopted.
When using, the maximum outside diameter outline of the expansion arc 33 on connecting rod 3 is less than or equal to the internal diameter of pipeline 1 to be connected, makes it can just put in pipeline 1; The internal diameter of stiffening ring 5 is larger than or equals the external diameter of pipeline 1, makes it just can be sleeved on the outside of pipeline 1.The external diameter of the internal diameter of elastomer 4 under force-free state and polished rod section 32 matches, and the external diameter of elastomer 4 under force-free state is at least not more than the maximum outside diameter of taper expander, preferably equals the maximum outside diameter of taper expander.Stiffening ring 5 is enclosed within the outside of pipeline 1, connecting rod 3 with elastomer 4 is put in pipeline 1, elastomer 4 enters after in pipeline completely, rotatably compress nut 2, promote elastomer 4 slide downward, because elastomer 4 has certain elasticity, under the squeezing action of gland nut 2, elastomer 4 can slide on taper expander.As shown in Figure 1, now the maximum outside diameter of taper expander adds that the wall thickness of elastomer 4 has been greater than the internal diameter of pipeline 1, makes the outer wall differential expansion of pipeline 1.Time gland nut 2 moves down, stiffening ring 5 also moves down simultaneously, is inflated part and blocks, can not continue to move down, now tighten the end that this pipe joint firmly can be connected to pipeline by gland nut 2 when stiffening ring 5 arrives the expansion position of pipeline 1.The setting of polished rod section defines the limit position of gland nut 2 on connecting rod 3, and excessive compression can be avoided to destroy the sealing of elastomer 4.
After connecting rod 3 is fixing, the unnecessary helical thread portion in gland nut 2 upper end can be used for connecting other pipeline.The liquid that the cavity of connecting rod 3 is used in connecting pipe.
Claims (2)
1. a pipe joint, comprise stiffening ring (5), spring tube (4), connecting rod (3) and be threaded connection the gland nut (2) on connecting rod (3), it is characterized in that: described stiffening ring (5) is sleeved on the outside of connecting rod (3), the end of gland nut (2) is provided with annular slot, and described stiffening ring (5) is rotatably installed in the draw-in groove of gland nut (2) by the snap ring (51) of its end; The tubular structure that described connecting rod (3) is hollow, connecting rod (3) comprises with externally threaded thread section (31), with the expansion arc (33) of taper expander and the polished rod section (32) that is arranged between thread section (31) and expansion arc (33), the external diameter of described expansion arc (33) is greater than the external diameter of polished rod section (32), and described spring tube (4) is sleeved in polished rod section (32).
2. a kind of pipe joint according to claim 1, is characterized in that: the lower end of described spring tube inner chamber is with the horn mouth mating expansion arc (33) outer surface tapering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520339877.3U CN204647606U (en) | 2015-05-25 | 2015-05-25 | A kind of pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520339877.3U CN204647606U (en) | 2015-05-25 | 2015-05-25 | A kind of pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204647606U true CN204647606U (en) | 2015-09-16 |
Family
ID=54100357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520339877.3U Expired - Fee Related CN204647606U (en) | 2015-05-25 | 2015-05-25 | A kind of pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204647606U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822640A (en) * | 2016-06-03 | 2016-08-03 | 粤水电轨道交通建设有限公司 | Rod part connecting device capable of easy assembly and disassembly |
| CN107989648A (en) * | 2017-12-06 | 2018-05-04 | 朱元彬 | A kind of coal mine gas drainage samples pipe connection |
-
2015
- 2015-05-25 CN CN201520339877.3U patent/CN204647606U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822640A (en) * | 2016-06-03 | 2016-08-03 | 粤水电轨道交通建设有限公司 | Rod part connecting device capable of easy assembly and disassembly |
| CN107989648A (en) * | 2017-12-06 | 2018-05-04 | 朱元彬 | A kind of coal mine gas drainage samples pipe connection |
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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: 20150916 Termination date: 20160525 |