CN2567428Y - Connecting structure of valve - Google Patents
Connecting structure of valve Download PDFInfo
- Publication number
- CN2567428Y CN2567428Y CN 02267009 CN02267009U CN2567428Y CN 2567428 Y CN2567428 Y CN 2567428Y CN 02267009 CN02267009 CN 02267009 CN 02267009 U CN02267009 U CN 02267009U CN 2567428 Y CN2567428 Y CN 2567428Y
- Authority
- CN
- China
- Prior art keywords
- valve
- pipe
- nut
- joint
- connecting tube
- 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
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Abstract
The utility model provides a novel connecting structure of a valve, which belongs to the technical field of a valve and solves the problem that the existing plastic pipe has short service life and no high-temperature resistance due to using a rubber sealing ring when the existing plastic pipe is connected with the valve. The novel connecting structure of valve comprises a valve body, a connecting pipe connected with the valve body into integration and a nut connected with the connecting pipe through screw threads, wherein, a baffle edge is arranged on the inner side face of the outer end of the nut, a plastic pipe joint passes through the nut, and the inner end of the pipe joint is provided with a folding edge on which the baffle edge is buckled; the end of the connecting pipe is provided with a circular sealing interface, the outer diameter of which is slightly smaller than the outer diameter of the connecting pipe, and the sealing interface and the connecting pipe are connected into integration. Because the utility model omits the rubber sealing ring and makes the plastic pipe joint directly connected with the sealing interface, the utility model not only has the advantages of simple operation and convenient use, but also can extend the service life of a product.
Description
Technical field
The utility model belongs to valve technology field, particularly a kind of novel linkage structure of valve.
Background technique
In pipelines such as water supply, air feed, fuel feeding, galvanized pipe owing to exist easily defective such as get rusty, perishable has not met present environmental requirement and has been eliminated.The substitute is various novel tubes, as plastic tube with environment protection type.In plastic tube, PP-R, the PP-B pipe that has polypropylene material to make, the PE pipe that also has polythene material to make.These are managed in use, and connecting between the tube and tube is to form by bonding behind the heat fusing.But when plastic tube was connected with valve, because valve generally adopts metallic material to make, therefore one of needs made the linkage structure that they can be tightly connected.This linkage structure usual way is to establish a rubber seal between the connecting tube of the pipe joint of plastic tube and valve, by a lock nut they is closely contacted and obtains connecting.Though this Placement is more common, owing to used rubber seal, exist the problem that seal ring easily wears out, working life is short inevitably, simultaneously can not be high temperature resistant because of seal ring, application area is subjected to certain restriction.
Summary of the invention
The purpose of this utility model overcomes the problems referred to above exactly, and a kind of novel linkage structure of valve of simple and reasonable, easy for installation, long service life is provided.
The utility model has adopted following technical proposal: the novel linkage structure of this valve comprises valve body, the connecting tube that is connected as a single entity with valve body and the nut that connects with connecting tube by screw thread, one retaining edge is arranged on the inner side surface of nut outer end, a joint for plastic tube passes nut, the inner of pipe joint is provided with and turns edge, above-mentioned retaining is along being buckled on this turns edge, the end of above-mentioned connecting tube is provided with a circular seal interface, the external diameter of sealed interface is slightly less than the external diameter of connecting tube, and sealed interface and connecting tube are connected as a single entity.
In the novel linkage structure of this valve, pipe joint is directly to contact with sealed interface.Particularly, the sealed interface roof pressure is on the turning edge of joint for plastic tube, and the retaining of nut inner side surface is along being buckled in the opposite side that turns edge, and by the scyewed joint of nut and connecting tube, tightening nuts is tightly connected sealed interface and joint for plastic tube.
Usually, the external diameter of above-mentioned sealed interface is slightly less than the external diameter that turns edge of joint for plastic tube.Like this, make the sealed interface roof pressure, reach the effect of optimal seal in the medium position that turns edge.
Above-mentioned pipe joint material is identical with the plastic tube material that will connect, and plastic tube is commonly used is a kind of in PP-R pipe, PP-B pipe, PE pipe or the hard polvinyl choride pipe.
Compared with prior art, the novel linkage structure of the valve that the utility model provides is owing to omitted rubber seal, joint for plastic tube directly is connected with sealed interface, so it is not only simple to operate, easy to use, and overcome problems such as common rubber seal is easily aging, serviceability temperature is low, can prolong the working life of product.
Description of drawings
Accompanying drawing is the structural representation with valve of the novel linkage structure that the utility model provides.
Among the figure, 1, valve body; 2, connecting tube; 3, pipe joint; 31, turn edge; 4, nut; 41, retaining edge; 5, sealed interface.
Embodiment
As shown in the figure, the valve that provides of present embodiment is a ball valve.All there is identical linkage structure both sides at ball valve body 1.The novel linkage structure of this valve is made up of connecting tube 2, joint for plastic tube 3 and nut 4.The connecting tube 2 and the valve body 1 of valve body 1 sidepiece are connected as a single entity.The end of connecting tube 2 is sealed interfaces 5, and this sealed interface 5 also is connected as a single entity with connecting tube 2, but its external diameter is slightly less than the external diameter of connecting tube 2.
As shown in the figure, in the present embodiment, joint for plastic tube 3 is cylindrical, and adopting PP-R is that material is made.Turn edge 31 in the inner of joint for plastic tube 3, and on the inner side surface of nut 4, have internal diameter less than the retaining of 31 external diameters that turn edge along 41, therefore when joint for plastic tube 3 passes nut 4 after, keep off on the nut 4 along 41 and will withhold in turning edge on 31, make joint for plastic tube 3 can not break away from valve.
The outer side surface of connecting tube 2 has outside thread.Nut 4 is connected with connecting tube 2 by screw thread.In the utility model, utilize plastic tube to have certain soft feature, tightening nuts 4, make sealed interface 5 tightly roof pressure make herein to be tightly connected in the turning edge on 31 of joint for plastic tube 3.
Obviously, this linkage structure has been omitted rubber seal, and is easy to operate.
As shown in the figure, in the present embodiment, described 31 the internal diameter of turning edge is slightly less than the internal diameter of pipe joint 3.Promptly turn edge 31 except outwards routing up, also slightly inwardly turn over into.Like this, after the plastic tube that is connected with this pipe joint 3 inserts, can obtain the location.Utilize heat fusing or bonding, plastic tube can be connected with pipe joint 3, plastic tube is connected with valve.
Claims (3)
1, a kind of novel linkage structure of valve, comprise valve body (1), connecting tube (2) that is connected as a single entity with valve body (1) and the nut (4) that connects with connecting tube (2) by screw thread, one retaining is arranged along (41) on the inner side surface of nut (4) outer end, a joint for plastic tube (3) passes nut (4), the inner of pipe joint (3) is provided with turn edge (31), above-mentioned retaining is buckled on these turn edge (31) along (41), the end that it is characterized in that described connecting tube (2) is provided with a circular seal interface (5), the external diameter of sealed interface (5) is slightly less than the external diameter of connecting tube (2), and sealed interface (5) is connected as a single entity with connecting tube (2).
2, the novel linkage structure of valve according to claim 1 is characterized in that the external diameter of described sealed interface (5) is slightly less than (31) external diameter that turns edge of joint for plastic tube (3).
3, the novel linkage structure of valve according to claim 1 and 2 is characterized in that described pipe joint (3) material is identical with the plastic tube material that will connect, and plastic tube is a kind of in PP-R pipe, PP-B pipe, PE pipe or the hard polvinyl choride pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267009 CN2567428Y (en) | 2002-09-05 | 2002-09-05 | Connecting structure of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267009 CN2567428Y (en) | 2002-09-05 | 2002-09-05 | Connecting structure of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2567428Y true CN2567428Y (en) | 2003-08-20 |
Family
ID=33732703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02267009 Expired - Fee Related CN2567428Y (en) | 2002-09-05 | 2002-09-05 | Connecting structure of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2567428Y (en) |
-
2002
- 2002-09-05 CN CN 02267009 patent/CN2567428Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |