CA1099182A - Automatic valve device for sanitation waste pipes - Google Patents
Automatic valve device for sanitation waste pipesInfo
- Publication number
- CA1099182A CA1099182A CA310,384A CA310384A CA1099182A CA 1099182 A CA1099182 A CA 1099182A CA 310384 A CA310384 A CA 310384A CA 1099182 A CA1099182 A CA 1099182A
- Authority
- CA
- Canada
- Prior art keywords
- pipe
- waste
- flow passage
- valve device
- waste pipe
- 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
Links
Classifications
-
- 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
- E03C1/1225—Arrangements of devices in domestic waste water pipe-line systems of air admittance valves
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The invention relates to an automatic air valve device for sanitation waste pipes for preventing com-munication in the rooms between the waste pipes and atmos-phere and to permit the introduction of fresh air into the pipes when a negative pressure occurs.
It comprises a body formed by a vertical tube in communication with a waste pipe, the said body having at its upper part a constriction in the form of a Venturi cooperating with a cover so as to form a peripheral air inlet situated at the exterior of the constriction.
The said air inlet is provided with an annular valve.
Around the cover and the upper end of the cylindrical body there is an insulating covering in which there is formed a circular recess providing communication with the atmosphere (figure 1).
The invention relates to an automatic air valve device for sanitation waste pipes for preventing com-munication in the rooms between the waste pipes and atmos-phere and to permit the introduction of fresh air into the pipes when a negative pressure occurs.
It comprises a body formed by a vertical tube in communication with a waste pipe, the said body having at its upper part a constriction in the form of a Venturi cooperating with a cover so as to form a peripheral air inlet situated at the exterior of the constriction.
The said air inlet is provided with an annular valve.
Around the cover and the upper end of the cylindrical body there is an insulating covering in which there is formed a circular recess providing communication with the atmosphere (figure 1).
Description
i~9~L~Z
Automatic valve systems or devices are known (U.S. patent Nr.,3.923.081) to prevent communication between waste pipes and atmosphere and which operate so th'at the discharge of contaminated air is prevented and the valve opens to allow air to enter the pipes when a nega-tive pressure occurs therein.
~' ' These valves satlsfy requirements according to which the pipes'projecting from roofs may be dispensed with and'~',be replaced by pipes housed inside buildings on condition that the general pipeline is provided with an automatic valve which does not allow stale air to escape but which opens to allow air to~enter in'the event of a negative pressure, e.g. on the flushing of water closets.
~P~
z The object of this invention is to produce devices of a simple design intended to solve various important problems associated with the use of such auto-matic valves.
These problems are as follows :
a) The valve operation must be absolutely reliable and the valve capacity must be capable of being increased.
b) The use of a single valve type must be possible for connecting vent pipes of dif~erent diamekers.
c) The valve must be protected thermally and against the risk of the entry of foreign bodies which might prevent correct operation.
The device according to the invention is characterised essentially in that a vertical tube cons-tituting the body of the valve comprises at its upper end a constriction in the form of a Venturi which cooperates with a cover so as to form a peripheral air inlet provi-ded with a valve situated at the exterior of the constric-tion and which can be tilted when a negative pressure occurs in the pipes while permitting the ~resh air to penetrate into the vertical pipe and which when the press~re is equilibrated or when there is overpressure occupies a position o~ obturation in which the escape of contamined air is prevented.
On the annexed drawings :
- Figure 1 is a section of the device.
Figure 2 is a detail in section to illustra-te one of the advantages of the invention.
Automatic valve systems or devices are known (U.S. patent Nr.,3.923.081) to prevent communication between waste pipes and atmosphere and which operate so th'at the discharge of contaminated air is prevented and the valve opens to allow air to enter the pipes when a nega-tive pressure occurs therein.
~' ' These valves satlsfy requirements according to which the pipes'projecting from roofs may be dispensed with and'~',be replaced by pipes housed inside buildings on condition that the general pipeline is provided with an automatic valve which does not allow stale air to escape but which opens to allow air to~enter in'the event of a negative pressure, e.g. on the flushing of water closets.
~P~
z The object of this invention is to produce devices of a simple design intended to solve various important problems associated with the use of such auto-matic valves.
These problems are as follows :
a) The valve operation must be absolutely reliable and the valve capacity must be capable of being increased.
b) The use of a single valve type must be possible for connecting vent pipes of dif~erent diamekers.
c) The valve must be protected thermally and against the risk of the entry of foreign bodies which might prevent correct operation.
The device according to the invention is characterised essentially in that a vertical tube cons-tituting the body of the valve comprises at its upper end a constriction in the form of a Venturi which cooperates with a cover so as to form a peripheral air inlet provi-ded with a valve situated at the exterior of the constric-tion and which can be tilted when a negative pressure occurs in the pipes while permitting the ~resh air to penetrate into the vertical pipe and which when the press~re is equilibrated or when there is overpressure occupies a position o~ obturation in which the escape of contamined air is prevented.
On the annexed drawings :
- Figure 1 is a section of the device.
Figure 2 is a detail in section to illustra-te one of the advantages of the invention.
- 2 -z Figuxes 3, 3a, 3b and 3c show the possibility of using a single type of automatic valve for pipes of dif-ferent diameters.
Figure 4 is a section of a modified embo-diment with respect to figure 1.
Figure S shows an example of application of the valve according to the invention.
Referring to figure 1, the valve body comprises a vertical tube 1 connected to a venting pipe (not shown in figure 1) and comprising at the top end a constriction in the form of a Venturi formed by a frusto-conical neck 2 terminating in a lip 3 and cooperating with a cover 4 so as to form a peripheral air inlet 5 in the form of a duct which can be closed by an annular valve 6 ;
in the example shown, thP latter located at the exterior of the frusto-conical neck rests on a seat formed by the lip 3 and a lip 7 provided on the inner periphery of the cover.
It will be seen that if a negative pressure occurs in the vertlcal tube 1 for example as a result of the draining, flushing or emptying operation, the valve 6 will be lifted so that fresh air can penetrate into the tube 1 via the duct 5. When the pressure is balanced or when there is an overpressure, the duct 5 is shut off by the valve 6 so that the contaminated air is prevented from leaving.
Because at the entry of the Venturi, at 3, the diameter is smaller than ~he diameter of the cylinder 1, an increase of the capacity of the valve is obtained which renders possible the use in buildings having a greater number of stores than with the known svstems.
One feature is that the inner wall 8 of the cover 4 is inclined to an extent such that the valve 6 can never be jammed in an oblique or horizontal position
Figure 4 is a section of a modified embo-diment with respect to figure 1.
Figure S shows an example of application of the valve according to the invention.
Referring to figure 1, the valve body comprises a vertical tube 1 connected to a venting pipe (not shown in figure 1) and comprising at the top end a constriction in the form of a Venturi formed by a frusto-conical neck 2 terminating in a lip 3 and cooperating with a cover 4 so as to form a peripheral air inlet 5 in the form of a duct which can be closed by an annular valve 6 ;
in the example shown, thP latter located at the exterior of the frusto-conical neck rests on a seat formed by the lip 3 and a lip 7 provided on the inner periphery of the cover.
It will be seen that if a negative pressure occurs in the vertlcal tube 1 for example as a result of the draining, flushing or emptying operation, the valve 6 will be lifted so that fresh air can penetrate into the tube 1 via the duct 5. When the pressure is balanced or when there is an overpressure, the duct 5 is shut off by the valve 6 so that the contaminated air is prevented from leaving.
Because at the entry of the Venturi, at 3, the diameter is smaller than ~he diameter of the cylinder 1, an increase of the capacity of the valve is obtained which renders possible the use in buildings having a greater number of stores than with the known svstems.
One feature is that the inner wall 8 of the cover 4 is inclined to an extent such that the valve 6 can never be jammed in an oblique or horizontal position
3 --in whlch the valve might stay in the open position when the pressure has been balanced (reference 61, figure 2), Also, the dimensions are so selecked that the valve 6 also covers the air inlet in its position of rest even if it touches the wall on one side.
As shown in Figure 1, an insulation 9 is pro-vided around the cover 4-8 and the end of the cylindrical part of the body 1 and is formed with a circular recess 10 providing communication between the external air and the inlet duct 5.
The air inlet aperture 10 is conventionally provided with an element, e.g. a netting 11 so disposed and constructed as to prevent insects or foreign bodies from entering.
The insuIation 9 enables the air to be kept hot inside the system and around the movable part 6 and prevents the valve from freazing.
Also, for transportation, the insulation 9 may be completed by a removable part (not shown) cove-ring the entire bottom part of the cylinder 1.
A tape 12 may be wound around both insulating elements in order to lock such a packing which is obtained on transport and maintain proper operation during that ;
period.
This tape is removed on use.
Figure 4 relates to an embodiment which is particularly suitable for practising the invention.
In this instance the cover makes an element which is completely separated and is adapted to fit on the cylinder.
Figures 3, 3a, 3b and 3c show how a single valve type of adequate capacity can be used to connect vent pipes 13 of different diameters (e.g. 50 mm : figure 3 ;
75 mm : figure 3a ; 90 mm : figure 3b ; 110 mm : figure 3c).
~ ~Q~8Z
This possibility can be obtained as follows : ¦
a) By locatlng the c,ylindrical body 1 out- ¦
side the pipe 13 (figures 3-3a) or inside the pipe 13 (figures 3b-3c) ;
b) By a varying and appropriate arrangement of the gaskets 14 (figures 3-3c).
An important advantage is that in the case of the invention the interior of the cylindrical body 1 remains sntirely free so that it can be fitted to a device such as a siphon.
A significant advantage is that with the invention, the inner portion of the cylindrical body 1 remains entirely free which permits adaptation among others to an apparatus such as a siphon.
Figure 5 shows an installation for a dwelling in which a number of devices 21 used for the discharge of waste water (lavatory, basins, sinks, etc.) are each pxovided with a trap or siphon 20 to each of which is connected a pipe 18 connected to the waste pipe 23.
On the other hand a plurality of automatic valves is also provided at 19, this valve being o~ the type shown in figure 1 on a vent pipe 13.
The pipes 13 and 18 are connected to the waste pipe 23 via a venting pipe 24 provided with a fan 25 having an outlet 26 for delivery to atmosphere.
It is understood that when this fan is in operation it produces a negative pressure in all the pipes 13-18-2~ and lifts the different valves 6 of the different valves 19 (figures 1 and 4).
In that way stale air can thus be discharged from~'~the rooms via pipe 24 at 26.
The waste water discharge pipes are used at the same time as pipes for the air evacuating system from the building, all the system being put into underpressure.
As shown in Figure 1, an insulation 9 is pro-vided around the cover 4-8 and the end of the cylindrical part of the body 1 and is formed with a circular recess 10 providing communication between the external air and the inlet duct 5.
The air inlet aperture 10 is conventionally provided with an element, e.g. a netting 11 so disposed and constructed as to prevent insects or foreign bodies from entering.
The insuIation 9 enables the air to be kept hot inside the system and around the movable part 6 and prevents the valve from freazing.
Also, for transportation, the insulation 9 may be completed by a removable part (not shown) cove-ring the entire bottom part of the cylinder 1.
A tape 12 may be wound around both insulating elements in order to lock such a packing which is obtained on transport and maintain proper operation during that ;
period.
This tape is removed on use.
Figure 4 relates to an embodiment which is particularly suitable for practising the invention.
In this instance the cover makes an element which is completely separated and is adapted to fit on the cylinder.
Figures 3, 3a, 3b and 3c show how a single valve type of adequate capacity can be used to connect vent pipes 13 of different diameters (e.g. 50 mm : figure 3 ;
75 mm : figure 3a ; 90 mm : figure 3b ; 110 mm : figure 3c).
~ ~Q~8Z
This possibility can be obtained as follows : ¦
a) By locatlng the c,ylindrical body 1 out- ¦
side the pipe 13 (figures 3-3a) or inside the pipe 13 (figures 3b-3c) ;
b) By a varying and appropriate arrangement of the gaskets 14 (figures 3-3c).
An important advantage is that in the case of the invention the interior of the cylindrical body 1 remains sntirely free so that it can be fitted to a device such as a siphon.
A significant advantage is that with the invention, the inner portion of the cylindrical body 1 remains entirely free which permits adaptation among others to an apparatus such as a siphon.
Figure 5 shows an installation for a dwelling in which a number of devices 21 used for the discharge of waste water (lavatory, basins, sinks, etc.) are each pxovided with a trap or siphon 20 to each of which is connected a pipe 18 connected to the waste pipe 23.
On the other hand a plurality of automatic valves is also provided at 19, this valve being o~ the type shown in figure 1 on a vent pipe 13.
The pipes 13 and 18 are connected to the waste pipe 23 via a venting pipe 24 provided with a fan 25 having an outlet 26 for delivery to atmosphere.
It is understood that when this fan is in operation it produces a negative pressure in all the pipes 13-18-2~ and lifts the different valves 6 of the different valves 19 (figures 1 and 4).
In that way stale air can thus be discharged from~'~the rooms via pipe 24 at 26.
The waste water discharge pipes are used at the same time as pipes for the air evacuating system from the building, all the system being put into underpressure.
Claims (9)
1. An automatic valve device connectable to a sanitation waste pipe for preventing discharge of waste gas from the pipe to the atmosphere and for admitting atmospheric air into the waste pipe in response to a pressure reduction in the waste pipe, which comprises a tubular member having an upper conical section which tapers inwardly and upwardly, the interior of the tubular member remaining entirely free, a cylindrical cover member overlying said upper conical section having a top wall spaced above the upper end of said conical section to form a valve seat chamber and an interior wall having an inwardly extending portion spaced radially from at least part of the upper portion of said conical member to form an annular flow passage therebetween communicating with the valve seat chamber, said inwardly extending portion defining with the upper edge of said conical section a support seat, a valve member movably mounted in said seat chamber and having a base portion designed for reception on said support seat to close said annular flow passage, said valve member being movably operative within said chamber to close said annular flow passage when the waste gas pressure in the waste pipe equals or exceeds atmospheric pressure and to open said flow passage to admit atmospheric air to the waste pipe when the waste gas pressure in the waste pipe is less than atmospheric pressure.
2. An automatic valve device according to Claim 1, wherein said side wall of said cylindrical cover includes an inclined inner surface adjacent to said valve seat chamber and spaced on the periphery of said valve member, said inclined inner surface being shaped so as to preclude contact with the entire periphery of said valve member when said valve member is operative to open said flow passage.
3. An automatic valve device according to Claim 1, further comprising an insulation member surrounding said cover member and at least part of said upper end of said tubular member, said insulation member having an aperture extending therethrough in communication with said flow passage.
4. An automatic valve device according to Claim 3, wherein said insulation member further comprises a cover which constitutes a separate element adapted to fit on the tubular member.
5. An automatic valve device according to Claim 4, in which tape is wound around said insulation member and said cover.
6. An automatic valve device according to Claim 3, further comprising a netting member covering said aperture to prevent the ingress of insects or any other foreign body into said aperture.
7. An automatic valve device according to Claim 1, wherein the lower end of said tubular member sealingly engages the inner surface of said sanitation waste pipe.
8. An automatic valve device according to Claim 1, wherein the lower end of said tubular member sealingly engages the outer surface of said sanitation waste pipe.
9. An improved plant for a building having a plurality of waste water discharging elements, each element having a trap provided with a pipe in connection with a common waste duct and an automatic valve device connected to the pipe for preventing discharge of waste gas from the pipe to the atmosphere and for admitting atmospheric air into the pipe in response to a pressure reduction in the waste pipe which comprises a tubular member having a lower cylindrical section and an upper conical section so connected that the cross-section of said member diminishes at its upper end, the tubular member having a bore through said sections from an entrance end to an exit end, a U-shaped cover member over-lying said upper conical section having a top wall spaced above the upper end of said conical section to form a valve seat chamber and an interior wall having an inwardly extending portion spaced radially from at least part of the upper portion of said conical member to form an annular flow passage therebetween communicating with the valve seat chamber, said inwardly extending portion defining with the upper edge of said conical section a support seat, a valve member movably mounted in said seat chamber and having a base portion designed for reception on said support seat to close said annular flow passage, said valve member being movably operative within said chamber to close said annular flow passage when the waste gas pressure in the waste pipe equals or exceeds atmospheric pressure and to open said flow passage to admit atmospheric air to the waste pipe when the waste gas pressure in the waste pipe is less than atmospheric pressure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE180,560 | 1977-08-31 | ||
| BE180560A BE858265A (en) | 1977-08-31 | 1977-08-31 | AUTOMATIC VALVE DEVICE FOR SANITARY WASTEWATER DISCHARGE PIPES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1099182A true CA1099182A (en) | 1981-04-14 |
Family
ID=3843038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA310,384A Expired CA1099182A (en) | 1977-08-31 | 1978-08-31 | Automatic valve device for sanitation waste pipes |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS54149018A (en) |
| CA (1) | CA1099182A (en) |
| DE (1) | DE2838068A1 (en) |
| DK (1) | DK148966C (en) |
| GB (1) | GB2014697B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8703132D0 (en) * | 1987-02-11 | 1987-03-18 | Earl R F | Air admittance valve |
| JP2703829B2 (en) * | 1991-01-24 | 1998-01-26 | 渡辺 孝 | Drainage system |
| JPH0826563B2 (en) * | 1992-05-06 | 1996-03-13 | 安藤建設株式会社 | Ventilator |
| JP6477345B2 (en) * | 2015-08-06 | 2019-03-06 | 株式会社オンダ製作所 | Insulation cover of valve device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1373089A (en) * | 1963-07-27 | 1964-09-25 | Non-priming siphon | |
| DE1908130A1 (en) * | 1969-02-19 | 1970-09-10 | Pass & Sohn Gummiwerk | Roll seal for connecting socket pipes Password: winding seal |
-
1978
- 1978-08-31 DE DE19782838068 patent/DE2838068A1/en active Granted
- 1978-08-31 JP JP10567978A patent/JPS54149018A/en active Granted
- 1978-08-31 CA CA310,384A patent/CA1099182A/en not_active Expired
- 1978-08-31 DK DK386078A patent/DK148966C/en not_active IP Right Cessation
- 1978-08-31 GB GB7835149A patent/GB2014697B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DK386078A (en) | 1979-03-01 |
| JPS6152289B2 (en) | 1986-11-12 |
| DE2838068C2 (en) | 1990-04-26 |
| DK148966C (en) | 1986-11-10 |
| GB2014697B (en) | 1982-06-03 |
| JPS54149018A (en) | 1979-11-21 |
| DK148966B (en) | 1985-12-02 |
| GB2014697A (en) | 1979-08-30 |
| DE2838068A1 (en) | 1979-03-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |