CN111236365B - Large-traffic anti-overflow back double riser water-drainage pipe fitting - Google Patents
Large-traffic anti-overflow back double riser water-drainage pipe fitting Download PDFInfo
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- CN111236365B CN111236365B CN202010023492.1A CN202010023492A CN111236365B CN 111236365 B CN111236365 B CN 111236365B CN 202010023492 A CN202010023492 A CN 202010023492A CN 111236365 B CN111236365 B CN 111236365B
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- riser
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/122—Pipe-line systems for waste water in building
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/122—Pipe-line systems for waste water in building
- E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
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- Hydrology & Water Resources (AREA)
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- Water Supply & Treatment (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
The invention relates to the field of drainage pipe fittings, in particular to a large-flow anti-return overflow double-riser drainage pipe fitting. The large-flow anti-return overflow double-riser drainage pipe fitting comprises a drainage riser and an aeration riser, wherein the drainage riser is provided with one or more cross branch pipe joints, a connecting sleeve which extends downwards and has a diameter smaller than that of the drainage riser is arranged in the drainage riser, a connecting pipe which is communicated with each other is arranged between the drainage riser and the aeration riser, and the lower end of the connecting sleeve is lower than the connecting pipe. Through the connecting sleeve which is smaller than the drainage vertical pipe in diameter and is lower than the lower end of the connecting pipe, the sewage is prevented from being splashed into the ventilation vertical pipe, and the double-vertical-pipe drainage pipe fitting has the beneficial effects of simple structure, overflow prevention, air pressure stabilization and smooth drainage.
Description
Technical Field
The invention relates to the field of drainage pipe fittings, in particular to a large-flow anti-return overflow double-riser drainage pipe fitting.
Background
In China, designers can select different building drainage systems according to the types and heights of buildings. The drainage system with the special ventilating vertical pipe or the double vertical pipes is most widely applied to high-rise and super high-rise buildings. It is characterized in that a special ventilation vertical pipe is arranged in parallel with the drainage vertical pipe, and an H ventilation pipe fitting is arranged on each layer or interlayer, so that the drainage vertical pipe is connected with the special ventilation vertical pipe. The system can make the pressure fluctuation generated in the vertical drainage pipe in the drainage process relaxed and balanced, and prevent the occurrence of the bad smell returning phenomenon of the toilet caused by the water seal damage on the horizontal branch pipes of each floor.
Please refer to fig. 1, chinese utility model patent with publication number CN201821179537.9 discloses a double vertical pipe self-ventilating and draining assembly with water seal, which is characterized in that: the drainage vertical pipe comprises a drainage vertical pipe body (1), an air-permeable vertical pipe body (2) and a connector (3) arranged between the drainage vertical pipe body and the air-permeable vertical pipe body, wherein the drainage vertical pipe body (1) comprises an upper drainage vertical pipe interface (101), a lower drainage vertical pipe interface (102) and a drainage transverse branch pipe interface (103), and the drainage transverse branch pipe interface (103) is arranged at the upper part of one side of the drainage vertical pipe body (1) and is communicated with an inner cavity of the drainage vertical pipe body (1); the ventilation riser body (2) comprises an upper ventilation riser connector (201), a middle expansion section (202) and a lower ventilation riser connector (203), and the connecting body (3) comprises an auxiliary ventilation channel (301), a U-shaped water seal flow channel (302), a partition plate (303), a waste water connecting pipe (304), a channel (305) and a ventilation channel (306); the auxiliary ventilation channel (301) is arranged at the upper part of the connecting body (3) and is communicated with the drainage vertical pipe body (1) and the ventilation vertical pipe body (2); the waste water connecting pipe (304) is arranged on one side or two sides of the upper part of the connecting body (3) and is communicated with a U-shaped water seal flow channel (302) arranged in the inner cavity of the connecting body (3); the U-shaped water seal runner (302) is formed by adopting a bent partition plate arranged in the connecting body (3); the partition plate (303) is arranged in the middle of the U-shaped water seal flow channel (302), and the channel (305) is arranged on one side, close to the drainage vertical pipe body (1), of the connecting body (3) and communicated with the drainage vertical pipe body (1); the vent channel (306) is disposed above the channel (305) and communicates with the auxiliary vent channel (301).
In the drainage process of the drainage assembly in the prior art, if the water flow of the waste water connecting pipe is too large, part of water flow enters the ventilation vertical pipe body to pollute the ventilation vertical pipe body, and the water flow at the connector of the drainage transverse branch pipe can impact the channel to influence the water flow discharge effect of the channel, so that the water flow is not smoothly discharged, and the drainage assembly has the problems that the drainage of a connecting body is not smooth, the water flow easily enters the ventilation vertical pipe body, the structure is complex and the like.
Disclosure of Invention
The invention aims to provide a large-flow anti-return overflow double-riser drainage pipe fitting which has the advantages of simple structure, anti-return overflow, stable air pressure and smooth drainage.
In order to achieve the advantages, the large-flow anti-backflow double-riser drainage pipe fitting provided by the invention comprises a drainage riser and an air vent riser, wherein the drainage riser is provided with one or more cross branch pipe joints, a connecting sleeve which extends downwards and has a diameter smaller than that of the drainage riser is arranged in the drainage riser, a connecting pipe which is communicated with each other is arranged between the drainage riser and the air vent riser, and the lower end of the connecting sleeve is lower than the connecting pipe.
In one embodiment of the invention, an annular ventilation channel is formed between the connecting sleeve and the vertical drainage pipe, an air flow channel is arranged in the connecting pipe, and the air flow channel is communicated with the middle part of the ventilation channel.
In one embodiment of the invention, the lower end of the connecting sleeve is positioned in the middle of the cross branch pipe joint.
In one embodiment of the invention, the aperture of the upper end of the connecting sleeve is larger than the aperture of the lower end of the connecting sleeve.
In an embodiment of the present invention, an expansion path is inside the drainage riser, and the expansion path is larger than the upper end aperture.
In one embodiment of the invention, the drainage vertical pipe and the ventilation vertical pipe, and the connecting sleeve and the drainage vertical pipe are all glued.
In one embodiment of the invention, the connecting pipe is perpendicular to the drainage vertical pipe and the ventilation vertical pipe respectively.
In one embodiment of the invention, the lateral leg interface is inclined downwardly towards the drainage riser.
In one embodiment of the invention, the connecting pipe is obliquely arranged between the drainage vertical pipe and the ventilation vertical pipe, and the lowest point of the connecting pipe close to the ventilation vertical pipe is equal to or higher than the highest point of the cross branch pipe interface.
In one embodiment of the invention, the cross branch pipe joint is provided with a blocking sheet, and the lower end of the blocking sheet is flush with the lower end of the connecting sleeve.
In the invention, the connecting sleeve with the diameter smaller than that of the vertical drainage pipe and lower than the lower end of the connecting pipe is used for preventing sewage from sputtering into the vertical ventilation pipe, so that the double-vertical-pipe drainage pipe has the beneficial effects of simple structure, overflow prevention, stable air pressure and smooth drainage.
Drawings
Fig. 1 is a schematic structural diagram of a double riser self-ventilating drain assembly with water seal in the prior art.
Fig. 2 is a schematic structural view of a large-flow anti-overflow double-riser drainage pipe fitting according to a first embodiment of the invention.
Fig. 3 is a sectional view of the large-flow anti-overflow double-riser drainage pipe fitting of fig. 2.
Fig. 4 is a sectional view of the large-flow anti-backflow double-riser drainage pipe fitting of fig. 2.
Fig. 5 is a schematic structural view of a large-flow anti-overflow double-riser drainage pipe fitting according to a second embodiment of the invention.
Fig. 6 is a schematic structural view of a large-flow anti-overflow double-riser drainage pipe fitting according to a third embodiment of the present invention.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be provided with reference to the accompanying drawings and preferred embodiments for describing specific embodiments, structures, features and effects thereof.
Referring to fig. 2 and 3, the large-flow anti-backflow double-riser drainage pipe fitting according to the first embodiment of the present invention includes a drainage riser 1 and a ventilation riser 2 connected and fixed to the drainage riser 1, the drainage riser 1 is provided with one or more cross-riser joints 3, a connection sleeve 4 extending downward and having a diameter smaller than that of the drainage riser 1 is disposed in the drainage riser 1, a connection pipe 5 is disposed between the drainage riser 1 and the ventilation riser 2, and a lower end of the connection sleeve 4 is lower than a lower end of the connection pipe 5.
An annular ventilation channel 6 is formed between the connecting sleeve 4 and the vertical drainage pipe 1, an air flow channel 51 is arranged in the connecting pipe 5, and the air flow channel 51 is communicated with the middle part of the ventilation channel 6.
Referring to fig. 4, the connecting sleeve 4 is fixedly connected to the upper end of the vertical drainage pipe 1, and the lower end of the connecting sleeve 4 is located in the middle of the horizontal branch pipe joint 3. The aperture d1 of the upper end of the connecting sleeve 4 is larger than the aperture d2 of the lower end of the connecting sleeve 4. The upper end of the connecting sleeve 4 is a water inlet 41. The inside of the vertical drainage pipe 1 is provided with an expansion drift diameter d3, and the expansion drift diameter d3 is larger than the aperture d1 at the upper end. The lower end of the vertical drainage pipe 1 is provided with a drainage drift diameter d4, and the diameter of the drainage drift diameter d4 is the same as that of the hole diameter d1 at the upper end.
The vertical drainage pipe 1 and the vertical ventilation pipe 2, and the connecting sleeve 4 and the vertical drainage pipe 1 are all glued. The connecting pipe 5 is respectively vertical to the drainage vertical pipe 1 and the ventilation vertical pipe 2. The horizontal branch pipe joint 3 inclines downwards towards the vertical drainage pipe 1, so that the odor of the water stored in the horizontal branch pipe joint 3 is avoided. One or two horizontal branch pipe connectors 3 are perpendicular to the vertical drainage pipe 1 to form a three-way or four-way drainage structure.
In the use process, water flow enters the drainage vertical pipe 1 from the connecting sleeve 4 and the transverse branch pipe connector 3 or respectively from the connecting sleeve 4 and the transverse branch pipe connector 3, and the ventilation vertical pipe 2 provides air.
In the process of uninterrupted flow, water flow generates negative pressure, air in the ventilation vertical pipe 2 is sucked into the air flow channel 51 to form air flow, the air flow enters the drainage vertical pipe 1 through the air flow channel 51, the connecting sleeve 4 enables the air flow to be uniformly distributed in the annular ventilation channel 6, and finally the air flow is discharged downwards along with the water flow. While the connecting sleeve 4 blocks the water flow from splashing into the ventilation vertical pipe 2.
In the intermittent flowing process, positive pressure is generated when water flow just enters the drainage stand pipe 1, part of air in the drainage stand pipe 1 is squeezed into the ventilation stand pipe 2, and negative pressure is formed in the drainage stand pipe 1 again along with the falling of the water flow, so that the falling of the water flow is assisted.
Therefore, when the water flow is in discontinuous or uninterrupted flow, because the aperture d2 at the lower end of the connecting sleeve 4 is smaller than the drainage drift diameter d4 of the drainage vertical pipe 1, the water flow can not contact or reduce to contact the inner wall of the drainage vertical pipe 1, thereby avoiding the sputtering of the water flow in the connecting sleeve 4; the lower end of the connecting sleeve 4 is lower than the lower end of the connecting pipe 5, so that the water inlet 41, the water flow scattering of the transverse branch pipe joint 3 and the water flow sputtering of the transverse branch pipe joint 3 are avoided. The sputtering is generated by water flow impacting the inner wall of the vertical drainage pipe 1, and the scattering is represented by irregularity when the water flows out.
Referring to fig. 5, in the second embodiment of the present invention, the connection pipe 5 is obliquely disposed between the drainage vertical pipe 1 and the ventilation vertical pipe 2, and the lowest point of the connection pipe 5 near the ventilation vertical pipe 2 is equal to or higher than the highest point of the cross branch pipe interface 3.
When the water flow entering from the cross branch joint 3 is too large, the water flow hits the connecting sleeve 4, part of the water moves along the outer wall of the connecting sleeve 4, and the ventilation riser 2 is also one of the channels that can be discharged, so that part of the water flow is brought to the air flow channel 51, which may cause contamination and blockage of the ventilation riser 2. In response to this problem, the obliquely arranged connecting tube 5 forms a second barrier preventing part of the water flow from entering the ventilation riser 2.
Referring to fig. 6, in a third embodiment of the present invention, the lateral branch pipe joint 3 is provided with a blocking piece 31, and the lower end of the blocking piece 31 is flush with the lower end of the connecting sleeve 4.
Because the connecting sleeve 4 is annular, if the water flows through the cross branch pipe, part of the water strikes the connecting sleeve 4 and then migrates along the outer wall of the connecting sleeve 4, and finally enters the ventilation vertical pipe 2. Therefore, the blocking piece 31 is arranged, so that the water flow is prevented from impacting the connecting sleeve 4, and the water flow is prevented from entering the ventilation vertical pipe 2.
In the invention, the connecting sleeve 4 with the diameter smaller than that of the drainage vertical pipe 1 and lower than the lower end of the connecting pipe 5 prevents sewage from sputtering into the ventilation vertical pipe 2, so that the double-vertical-pipe drainage pipe fitting has the beneficial effects of simple structure, overflow prevention, stable air pressure and smooth drainage.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A large-flow anti-overflow double-riser drainage pipe fitting comprises a drainage riser and an aeration riser, wherein the drainage riser is provided with one or more cross branch pipe joints, and the large-flow anti-overflow double-riser drainage pipe fitting is characterized in that a connecting sleeve which extends downwards and has a diameter smaller than that of the drainage riser is arranged in the drainage riser, a connecting pipe which is communicated with each other is arranged between the drainage riser and the aeration riser, the lower end of the connecting sleeve is lower than the connecting pipe, the lower end of the connecting sleeve is positioned in the middle of the cross branch pipe joint, and the cross branch pipe joint inclines downwards towards the drainage riser.
2. The high-flow anti-overflow double-riser drainage pipe fitting as claimed in claim 1, wherein an annular vent channel is formed between the connecting sleeve and the drainage riser, an air flow channel is formed in the connecting sleeve, and the air flow channel is communicated with the middle of the vent channel.
3. The high-flow anti-overflow double-riser drainage pipe fitting as claimed in claim 1, wherein the aperture of the upper end of the connecting sleeve is larger than the aperture of the lower end of the connecting sleeve.
4. The high-flow anti-backflow double-riser drainage pipe fitting according to claim 3, wherein an expansion drift diameter is arranged inside the drainage riser, and the expansion drift diameter is larger than the upper-end pore diameter.
5. The high-flow anti-backflow double-riser drainage pipe fitting according to claim 1, wherein the drainage riser pipe is glued to the ventilation riser pipe and the connection sleeve is glued to the drainage riser pipe.
6. The high flow anti-spill-back double-riser drain pipe fitting of claim 1, wherein the connecting pipe is perpendicular to the drainage riser pipe and the vent riser pipe, respectively.
7. The high-flow anti-overflow double-riser drainage pipe fitting according to claim 1, wherein the connecting pipe is obliquely arranged between the drainage riser and the vent riser, and the lowest point of the connecting pipe, which is close to the vent riser, is equal to or higher than the highest point of the cross-branch pipe joint.
8. The high-flow anti-overflow double-riser drainage pipe fitting according to claim 1, wherein the cross-riser joint is provided with a blocking piece, and the lower end of the blocking piece is flush with the lower end of the connecting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010023492.1A CN111236365B (en) | 2020-01-09 | 2020-01-09 | Large-traffic anti-overflow back double riser water-drainage pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010023492.1A CN111236365B (en) | 2020-01-09 | 2020-01-09 | Large-traffic anti-overflow back double riser water-drainage pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111236365A CN111236365A (en) | 2020-06-05 |
| CN111236365B true CN111236365B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010023492.1A Active CN111236365B (en) | 2020-01-09 | 2020-01-09 | Large-traffic anti-overflow back double riser water-drainage pipe fitting |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08320094A (en) * | 1995-05-26 | 1996-12-03 | Mitsubishi Plastics Ind Ltd | Collecting drain coupling |
| CN203546832U (en) * | 2013-09-09 | 2014-04-16 | 朱颖珊 | Double-wall ventilation and drainage pipe |
| CN208844675U (en) * | 2018-08-02 | 2019-05-10 | 中国中元国际工程有限公司 | H-type pipe fitting and building double profile tube drainaging system including the H-type pipe fitting |
| CN110173025B (en) * | 2019-06-12 | 2024-02-13 | 中信国安建工集团有限公司 | Water supply and drainage pipeline system and construction method |
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2020
- 2020-01-09 CN CN202010023492.1A patent/CN111236365B/en active Active
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| CN111236365A (en) | 2020-06-05 |
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