CN203463827U - Water drain pipe for backflow preventer - Google Patents
Water drain pipe for backflow preventer Download PDFInfo
- Publication number
- CN203463827U CN203463827U CN201320410436.9U CN201320410436U CN203463827U CN 203463827 U CN203463827 U CN 203463827U CN 201320410436 U CN201320410436 U CN 201320410436U CN 203463827 U CN203463827 U CN 203463827U
- Authority
- CN
- China
- Prior art keywords
- boss
- pipe
- convex platform
- lug boss
- screw threads
- 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
A water drain pipe for a backflow preventer is realized in a manner that screw holes connected with the backflow preventer are arranged on a flange; the periphery of a water port of the flange is provided with an inner boss; the periphery of the inner boss is provided with inner boss screw threads; the inner boss is connected with an inner pipe through the inner boss screw threads; an outer boss is arranged in the exterior of the inner boss; the outer boss is provided with outer boss screw threads; the outer boss is connected with an outer pipe through the outer boss screw threads; the outer pipe wall, close to the flange, of the outer pipe is provided with via holes; the water outlet end of the inner pipe extends to the place where is 5 mm lower than the via holes of the outer pipe; the inner wall of the inner pipe, at the place where the inner pipe and the inner boss are connected through the corresponding screw threads, is provided with inner pipe inner screw threads; and the inner wall of the outer pipe, at the place where the outer pipe and the outer boss are connected through the corresponding screw threads, is provided with outer pipe inner screw threads. The water drain pipe is simple in structure and convenient to install and use. Thanks to the screw thread connection arrangement, the inner and outer pipes can be disassembled and replaced when the inner and outer pipes are damaged.
Description
Technical field:
The utility model belongs to a kind of drain pipe, particularly a kind of water drainage pipe of reflux-avoiding equipment.
Background technique:
At present, on backflow preventer, spattering outward in order to prevent from sluicing, is mostly the captation that a similar funnel is installed on drain pipe, this device is installed and is taken up room greatly, also inconvenient during installation, and splashproof effect is also bad.
Model utility content:
The utility model overcomes the deficiency of the problems referred to above, and a kind of water drainage pipe of reflux-avoiding equipment is provided, and this drain pipe is simple in structure, easy to install.
The utility model is achieved in that and on flange, is provided with the screw being connected with backflow preventer, and the surrounding at the flange mouth of a river is provided with inner convex platform, and inner convex platform surrounding is provided with inner convex platform screw thread, on inner convex platform by the inner convex platform inner tube that has been threaded; Outside at inner convex platform is provided with outer lug boss, and outer lug boss is provided with outer lug boss screw thread, in outer lug boss, by the outer lug boss outer tube that has been threaded, on the outer tube wall at outer tube near flange, is provided with through hole; The waterexit end of said inner tube extends to the following 5 millimeters of places of through hole of outer tube; On the inner tube wall of said inner tube and inner convex platform threaded connection place, be provided with inner tube internal thread, on the outer tube wall of said outer tube and outer lug boss threaded connection place, be provided with outer tube internal thread.
The utility model is simple in structure, easy to install.Due to the setting that is threaded, therefore, when inner and outer pipe damages, can unload replacing.
Accompanying drawing explanation:
Accompanying drawing 1 is structural representation of the present utility model, 1, screw 2, flange 3, outer tube 4, outer lug boss 5, the mouth of a river 6, inner convex platform 7, inner tube 8, through hole
Embodiment:
1 embodiment is by reference to the accompanying drawings, a kind of water drainage pipe of reflux-avoiding equipment, be achieved in that and on flange 2, be provided with the screw 1 being connected with backflow preventer, surrounding at the flange mouth of a river is provided with inner convex platform 6, inner convex platform 6 surroundings are provided with inner convex platform screw thread, on inner convex platform 6 by the inner convex platform inner tube 7 that has been threaded; In the outside of inner convex platform 6, be provided with outer lug boss 4, outer lug boss 4 is provided with outer lug boss screw thread, in outer lug boss 4, by the outer lug boss outer tube 3 that has been threaded, is provided with through hole 8 on the outer tube wall at outer tube 3 near flange; The waterexit end of said inner tube 7 extends to through hole 5 millimeters of places below 8 of outer tube 3; On the inner tube wall of said inner tube 7 and inner convex platform threaded connection place, be provided with inner tube internal thread, on the outer tube wall of said outer tube 3 and outer lug boss threaded connection place, be provided with outer tube internal thread.
Claims (1)
1. a water drainage pipe of reflux-avoiding equipment, its feature: be provided with the screw (1) being connected with backflow preventer on flange (2), surrounding at the flange mouth of a river is provided with inner convex platform (6), inner convex platform (6) surrounding is provided with inner convex platform screw thread, upper by the inner convex platform inner tube (7) that has been threaded at inner convex platform (6); In the outside of inner convex platform (6), be provided with outer lug boss (4), outer lug boss (4) is provided with outer lug boss screw thread, upper by the outer lug boss outer tube (3) that has been threaded in outer lug boss (4), at outer tube (3), near on the outer tube wall of flange, be provided with through hole (8); The waterexit end of said inner tube (7) extends to the following 5 millimeters of places of through hole (8) of outer tube (3); On the inner tube wall of said inner tube (7) and inner convex platform threaded connection place, be provided with inner tube internal thread, on the outer tube wall of said outer tube (3) and outer lug boss threaded connection place, be provided with outer tube internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320410436.9U CN203463827U (en) | 2013-06-30 | 2013-06-30 | Water drain pipe for backflow preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320410436.9U CN203463827U (en) | 2013-06-30 | 2013-06-30 | Water drain pipe for backflow preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463827U true CN203463827U (en) | 2014-03-05 |
Family
ID=50176194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320410436.9U Expired - Fee Related CN203463827U (en) | 2013-06-30 | 2013-06-30 | Water drain pipe for backflow preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463827U (en) |
-
2013
- 2013-06-30 CN CN201320410436.9U patent/CN203463827U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20140630 |
|
| EXPY | Termination of patent right or utility model |