CN2703943Y - Pipe jointing structure - Google Patents
Pipe jointing structure Download PDFInfo
- Publication number
- CN2703943Y CN2703943Y CN 200420062015 CN200420062015U CN2703943Y CN 2703943 Y CN2703943 Y CN 2703943Y CN 200420062015 CN200420062015 CN 200420062015 CN 200420062015 U CN200420062015 U CN 200420062015U CN 2703943 Y CN2703943 Y CN 2703943Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- stainless steel
- jointing
- plastic tube
- linkage structure
- 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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Abstract
The utility model discloses a pipe jointing structure, belonging to the mechanical technical field and the utility model solves the problem in the present pipe jointing structure that the sealing property is not good and the jointing is not firm in the joint. The pipe jointing structure comprises a plastic pipe and a jointing pipe; the jointing end of the plastic tube is inserted in the jointing pipe; the outer lateral surface of the jointing pipe is provided with an outer screw. One nut is connected with the jointing pipe through the screw; a rubber sealing ring is provided between the jointing pipe and the plastic pipe; the cross section of the sealing ring is in flat shape; the sealing ring is imbedded with a ring stainless steel ring; the inner edge of the stainless steel ring extends from the inner side of the sealing ring. The stainless steel ring is formed by that a stainless steel slice in thin strip shape is folded internally and externally and alternately to form a right-angle teeth shape. The pipe jointing structure can make the position of the sealing ring remain fixed and the pipe jointing structure is provided with a good sealing performance. Meanwhile, the jointing of the plastic pipe and the jointing pipe is firm and the installation and operation are convenient as well.
Description
Technical field
The utility model belongs to field of mechanical technique, particularly a kind of linkage structure of pipe.
Background technique
In the oil gas pipeline of water supply pipe or industrial use, galvanized pipe is eliminated gradually because of getting rusty easily and rotting.At present, some novel tubes with environmental-protecting performance constantly occur, as PP-R pipe, Stainless Steel Tube etc.Existing these novel tubes, its end generally can not tappings, can't be connected with valve or joint by screw thread.Therefore, the linkage structure of many novelties occurred, some has also applied for patent.
As " the plug-in type aluminium plastic pipe joint " that Chinese patent 9923907 7X provide, it is made up of fittings body and red copper lasso provided thereon, and fittings body is provided with rib.In use, the plastic-aluminum pipe is inserted between lasso and the fittings body, with pliers that the lasso pincers are tight, the plastic-aluminum pipe is connected with fittings body.In the connection of this structure, need use the special tool of pliers and so on, and operation the time splits the plastic-aluminum pipe clamp easily, certain deficiency is arranged.
In addition, adopt the Placement of nut fastening also very common, " the clamp locking pipe joint " that provides as Chinese patent 002444151, it is made up of pipe junctor, Sealing, nut, clamp, mounting circular ring shape clamp in the suit nut on the plastic-aluminum pipe, circular groove, Sealing etc. is installed in the termination, by screwing nut, pipe is connected.This linkage structure is installed more convenient, and time saving and energy saving.But the defective that exists is, because Sealing is stuck between clamp and the nut, screws at nut and can make the Sealing distortion in the process, thereby influenced the sealing of joint.Simultaneously, the connection of pipe and joints is also firm inadequately, is transferred to easily.
Summary of the invention
The purpose of this utility model is at the problems referred to above, and a kind of pipe connecting structure of novel structure is provided, make it have simple in structure, be connected firmly, the characteristics of good airproof performance.
For achieving the above object, the utility model has adopted following technical proposal: the linkage structure of this pipe comprises plastic tube and adapter, the connecting end of plastic tube inserts in the adapter, the outer side surface of taking over has outside thread, and a nut is connected with adapter by screw thread, it is characterized in that, be provided with rubber seal between described adapter and the plastic tube, the cross section of sealing circle is pancake, is embedded with a circle stainless steel coil in the seal ring, and the inboard of seal ring is stretched out on the interior edge of stainless steel coil.
In the linkage structure of above-mentioned pipe, described stainless steel coil is alternately to be bent into the right angle dentation inside and outside the stainless steel sheets by a circle slice shape and to form.
Usually, in the linkage structure of above-mentioned pipe, the outside of seal ring is stretched out in the outer of described stainless steel coil.
In the linkage structure of above-mentioned pipe, described stainless steel coil is dish.
In use, the end that nut and seal ring are inserted in the plastic tube connecting end is successively at first inserted plastic tube then and is taken over, and makes between seal ring clamp-ons plastic tube and take over, and nut is twisted on taking over, and nut firmly is connected with adapter.Under the effect of nut, seal ring can be fixed between plastic tube and the adapter, can not be shifted.
At this moment, seal ring makes between adapter and the plastic tube and keeps good sealing property; Simultaneously, the stainless steel coil in the seal ring is stuck on the plastic tube, makes plastic tube be difficult to withdraw from from take over.
In the linkage structure of above-mentioned pipe, the connecting end inboard of described plastic tube also can be provided with a lining.Because plastic tube does not have rigidity, when connecting, may so utilize lining to play a supportive role, make plastic tube and adapter that reliable the connection be arranged because of stressed excessive deforming.
The linkage structure of this pipe is particularly suitable for the pipe that PP-R pipe, Stainless Steel Tube etc. have certain rigidity.In the linkage structure of this pipe, when plastic tube was connected with valve, adapter was connected as a single entity with valve; When plastic tube was connected with pipe joint, adapter just was integral with pipe joint.
Compared with prior art, the linkage structure of this pipe has following advantage:
1, owing in seal ring, embed stainless steel coil, makes the position of seal ring be maintained fixed, in nut screw-in adapter process, can not be shifted, guarantee that there is excellent sealing performance the joint.
2, stainless steel coil is stuck on the plastic tube when connecting, and plastic tube is difficult to withdraw from from take over, and makes plastic tube very firm with being connected of adapter.
3, in use, as long as earlier at the connecting end cover upper cap nut and the seal ring of plastic tube, the insertion adapter is tightened with nut and is got final product then, and fitting operation is very convenient, has higher utility.
Description of drawings
Fig. 1 is the sectional view of the linkage structure of this pipe.
Fig. 2 is the sectional view of seal ring in the linkage structure of this pipe.
Fig. 3 is the plan view of stainless steel coil in the linkage structure of this pipe.
Fig. 4 is the sectional view of Fig. 3 along A-A.
Among the figure, 1, seal ring; 2, stainless steel coil; 21, interior edge; 22, outer; 3, take over; 31, retaining edge; 32, step; 4, plastic tube; 5, nut; 6, lining.
Embodiment
As shown in Figure 1, the linkage structure of this pipe comprises plastic tube 4, adapter 3, seal ring 1 and nut 5.The applied plastic tube 4 of present embodiment is the PP-R pipe.Plastic tube 4 inserts in to be taken in 3.Be provided with retaining along 31 in the inner of taking over 3.After plastic tube 4 inserts, block along 31, plastic tube 4 can not advanced forward after installation by this retaining.
As shown in Figure 1, also be provided with a columnar step 32 taking over 3 inboards, step 32 with take over 3 and be connected as a single entity, and the internal diameter of step 32 is slightly greater than the external diameter of plastic tube 4.Plastic tube 4 insert take over 3 after, utilize step 32 make plastic tube 4 up and down and left and right sides fixed-site, avoid plastic tube 4 off-centre or malposition and influence the sealing of joint.
As shown in Figure 1, when connecting, the front portion of seal ring 1 is embedded in plastic tube 4 and takes between 3, makes between the two to be tightly connected.
As shown in Figure 2, in seal ring 1, be embedded with a circle stainless steel coil 2, stainless steel coil 2 interior along 21 inboards of stretching out seal ring 1.As shown in Figure 4, the internal diameter of stainless steel coil 2 is slightly less than the external diameter of plastic tube 4.In use, the interior outer surface that embeds plastic tube 4 along 21 meetings of stainless steel coil 2.Simultaneously, as shown in Figure 4, stainless steel coil 2 is dish, and it is interior along 21 connecting ends toward plastic tube 4.This structure, making has the masterpiece time spent of outside dial-out when plastic tube 4, and stainless steel coil 2 can peak at the outer surface of plastic tube 4, makes plastic tube 4 be difficult to break away from and takes over 3.Therefore, plastic tube 4 is very firm with being connected of adapter 3.
As shown in Figure 2, seal ring 1 is also stretched out in the outer 22 of stainless steel coil 2.As shown in Figure 3 and Figure 4, it is alternately to be bent into the right angle dentation inside and outside the stainless steel sheets by a circle slice shape and to form.By this shape, the stainless steel coil 2 that is embedded in the rubber seal 1 can firmly be connected with it.
As shown in Figure 1, the outer side surface of adapter 3 has outside thread, and nut 5 is connected with adapter 3 by screw thread.When nut 5 screwed in adapter 3, the inner side surface crush seal circle 1 of nut 5 embedded between plastic tube 4 and the adapter 3 part of seal ring 1; Simultaneously, the inner side surface of nut 5 also roof pressure utilizes the elasticity of stainless steel coil 2 on the outer 22 of stainless steel coil 2, makes the interior outer surface along 21 embedding plastic tubes 4 of stainless steel coil 2.Obviously, be screwed into adapter 3, not only make the adapter 3 and the joint of plastic tube 4 have good sealing property, and can connect securely by nut 5.
As shown in Figure 1, when connecting, the connecting end inboard of plastic tube 4 lining 6 of also can packing into.Utilize lining 6 to play a supportive role, improve plastic tube 4 and take over 3 soundnesses that are connected.
Claims (8)
1, a kind of linkage structure of pipe, comprise plastic tube (4) and take over (3), the connecting end of plastic tube (4) inserts in the adapter (3), the outer side surface of taking over (3) has outside thread, a nut (5) is connected with adapter (3) by screw thread, it is characterized in that, be provided with rubber seal (1) between described adapter (3) and the plastic tube (4), the cross section of sealing circle (1) is pancake, be embedded with a circle stainless steel coil (2) in the seal ring (1), the inboard of seal ring (1) is stretched out on the interior edge (21) of stainless steel coil (2).
2, the linkage structure of pipe according to claim 1 is characterized in that, described stainless steel coil (2) is alternately to be bent into the right angle dentation inside and outside the stainless steel sheets by a circle slice shape and to form.
3, the linkage structure of pipe according to claim 2 is characterized in that, the outside of seal ring (1) is stretched out in the outer (22) of described stainless steel coil (2).
According to the linkage structure of claim 1,2 or 3 described pipes, it is characterized in that 4, described stainless steel coil (2) is dish.
According to the linkage structure of claim 1,2 or 3 described pipes, it is characterized in that 5, the connecting end inboard of described plastic tube (4) is provided with a lining (6).
6, according to the linkage structure of claim 1,2 or 3 described pipes, it is characterized in that, be provided with retaining along (31) in the inner of taking over (3).
7, the linkage structure of pipe according to claim 6 is characterized in that, is provided with a columnar step (32) taking over (3) inboard, and step (32) is connected as a single entity with taking over (3), and the internal diameter of step (32) is slightly greater than the external diameter of plastic tube (4).
8, the linkage structure of pipe according to claim 4 is characterized in that, the interior edge (21) of described stainless steel coil (2) is toward the connecting end of plastic tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420062015 CN2703943Y (en) | 2004-06-17 | 2004-06-17 | Pipe jointing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420062015 CN2703943Y (en) | 2004-06-17 | 2004-06-17 | Pipe jointing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2703943Y true CN2703943Y (en) | 2005-06-08 |
Family
ID=34777455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420062015 Expired - Lifetime CN2703943Y (en) | 2004-06-17 | 2004-06-17 | Pipe jointing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2703943Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429449C (en) * | 2004-06-17 | 2008-10-29 | 章根友 | Connecting structure of pipes |
| CN101666411B (en) * | 2009-08-11 | 2012-09-05 | 蔡贤通 | Quick connection structure of plastic pipe |
| CN101576190B (en) * | 2009-06-04 | 2012-12-12 | 玉环江林水暖管业有限公司 | Quick water-heating connecting structure |
-
2004
- 2004-06-17 CN CN 200420062015 patent/CN2703943Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429449C (en) * | 2004-06-17 | 2008-10-29 | 章根友 | Connecting structure of pipes |
| CN101576190B (en) * | 2009-06-04 | 2012-12-12 | 玉环江林水暖管业有限公司 | Quick water-heating connecting structure |
| CN101666411B (en) * | 2009-08-11 | 2012-09-05 | 蔡贤通 | Quick connection structure of plastic pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20081029 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |