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US3651524A - Vacuum drain system - Google Patents

Vacuum drain system Download PDF

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Publication number
US3651524A
US3651524A US11764A US1176470A US3651524A US 3651524 A US3651524 A US 3651524A US 11764 A US11764 A US 11764A US 1176470 A US1176470 A US 1176470A US 3651524 A US3651524 A US 3651524A
Authority
US
United States
Prior art keywords
valve
pipe
inlet
drain
vacuum
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
Application number
US11764A
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English (en)
Inventor
Lars-Erik Bengtsson
Claes G Allander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gustavsbergs Fabriker AB
Original Assignee
Gustavsbergs Fabriker AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gustavsbergs Fabriker AB filed Critical Gustavsbergs Fabriker AB
Application granted granted Critical
Publication of US3651524A publication Critical patent/US3651524A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E03C1/22—Outlet devices mounted in basins, baths, or sinks
    • 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

Definitions

  • ABSTRACT A sanitary drain system for a building in which a plurality of waste water drains are connected to a soil pipe and with the outlet end of the soil pipe being provided by a hydraulic clo sure.
  • a vacuum is provided in the soil pipe and an inlet valve is provided in the connection between each waste pipe and the soil pipe.
  • the inlet valve is of the type which is responsive to the vacuum in the soil pipe to remain closed in the absence of waste water in the drain at the inlet side of the valve. However, the inlet valve opens when there is water in the drain at the valves inlet side so that waste water and also solid wastes can readily pass through the valve and thence through the soil pipe to the sewer.
  • This invention relates to a drain system for houses, especially big buildings, wherein the drain water supplied to housepipes through inlet openings provided with inlet valves is transported in the house-pipes under the influence of vacuum.
  • a drain system using vacuum is known, which system is provided with a hermetically closed vacuum tank into which the drain water is supplied by opening of an inlet valve permitting inflow of drain water in the form of a water piston into the house-pipes.
  • the system permits the transport of water having a large content of solid particles in pipes having a very small area, and in horizontal pipes as well as pipes connected to a vacuum tank located at a higher level than the inlet valve.
  • a serious inconvenience is, however, that a strong vacuum is necessary in the house-pipes and that the entire system forms a hermetically closed system when the inlet valves are closed.
  • a drain system is also known utilizing a vacuum streetsewer pipe system connected to a conventional house-pipe .system via a hydraulic closure or trap.
  • the house-pipe system
  • a drain system comprising house-pipes, which can be horizontal or slope upwardly, inlet openings provided with inlet valves and connected to said house-pipes, a common outlet pipe for said house-pipes, a hydraulic closure at the outlet end of said outlet pipe, means connected to the inlet end of said outlet pipe for maintaining vacuum in said housepipes and means connected at least to the most distant parts of the house-pipes, as seen from the outlet pipe, for throttled outside air inlet into the house-pipes.
  • the throttled outside air inlets are preferably arranged to inject air at the vacuum sides of the inlet valves, so that a closed inlet valve cannot prevent the flow of drain water from an inlet valve to a house-pipe.
  • the drain water flowing in the house-pipes is accelerated under the influence of additional outside air inlets which become effective and the drain water is split into drops which, together with solid particles, are carried by the air stream with a high velocity to the hydraulic closure in which drain water and solid particles, but not air, pass downwardly.
  • the system according to the invention requires a moderate vacuum making it possible to use very simple inlet valves having flexible walls presenting inner surfaces bearing against each other and, under the influence of the vacuum in the house-pipes, being airtight and pressed against each other.
  • Such a valve is impervious to air but not to water and can be used even in connection with a conventional water-closet having the usual hydraulic closure outlet.
  • FIG. 1 schematically illustrates an embodiment of the system according to the invention in a sectional view
  • FIG. 2 is a front view of an automatic inlet valve
  • FIG. 3 is a sectional view on line III-Ill of FIG. 2,
  • FIG. 4 is a side view of the inlet valve shown in FIG. 2, and
  • FIG. 5 is a sectional view of a preferred embodiment of the inlet valve.
  • the drain system shown in FIG. 1 has a vertical said pipe 1 and a plurality of substantially horizontal branch waste pipes 2, 3, 4 to which a lavatory 5, a draining gutter 6 and a watercloset 7 are connected via inlet valves 8, 9 and 10, respectively. All these pipes have a diameter which is about half the diameter of conventional drain pipes, and the branch waste pipes 2, 3, 4 are located in a thin .framing of joists in which the pipes, if necessary, can extend upwards around a joist in the framing of-joists.
  • the pipe 1 is connected to a pipe 1 l to which a suction pipe 12 is branched via a water separator tank 13 and a branch pipe 14.
  • the pipe 11 is connected to the upper end of a vertical leg 15 of a hydraulic closure 16 the under end of which leg 15 dips under the water surface in a drain pipe belonging to a conventional street-sewer system. Due to the vacuum maintained in the system, a column of drain water is maintained in leg 15, which column has a height depending on the vacuum generated by a fan 18 connected to the suction pipe 12.
  • the inlet valves 8 and 9 are, for example, of the kind shown in FIGS. 2, 3 and 4 having a chamber 20 presenting two opposite side walls 21, 22 of stiff material and two side walls 23, 24 of flexible material and a top and a bottom wall of flexible material.
  • a slot 25 In the top wall perpendicular to the stiff side walls 21, 22 there is a slot 25 extending upwardly in FIG. 2 between two flexible lips 26 forming a part of the top wall of chamber 20.
  • the lips 26 extend upwards to form, via a transition sec- .tion 28 of flexible material, a short inlet pipe 27.
  • An outlet pipe 29 is connected to pipes 2 and 3, respectively, (FIG. 1) and communicates with the interior of chamber 20 via an opening in the bottom wall of chamber 20.
  • valves 8, 9 can be designed as shown in FIG. 5.
  • This valve comprises a tubular member 30 of flexible material having two opposite wall portions permanently deformed to sealingly engage each other.
  • This valve is, to a certain extent, impervious for air but not for water and the sealing action of the walls 30 is amplified by the vacuum maintained in the outlet pipe 29.
  • the valve 10 of the water-closet is a manually operated membrane valve, known per se. If a water-closet of conventional type is used having an outlet provided with a hydraulic closure, it is possible, however, to utilize an automatically operated valve of the type shown in FIGS. 2 to 5 instead of the manually operated valve 10.
  • this pipe is provided with branch pipe 32 connected close to the valve 10.
  • a further branch pipe 34 is connected to pipe 32 connecting the interior of the water-closet with the interior of pipe 32.
  • the outside air flows into the pipe 32 through an air-throttling nozzle 33 attached to pipe 32.
  • a further air-throttling nozzle 35 is attached to the top of the vertical pipe 1 and other such nozzles may be arranged at different points along the house-pipes 2, 3, 4, if necessary.
  • the operation of the drain system is as follows:
  • a permanent vacuum of about 700 mm. water column is maintained in the system by the fan 18, in which case the height of the water column in the hydraulic closure 15 is about 700 mm. Air flows into the nozzles 33, 35 and pipe 34 through the pipes l, 2, 3, 4, 11 and 14 to the fan 18.
  • Drain water supplied to pipes 2, 3 and 4 is rapidly transported towards pipe 1 when the inlet valves 8, 9 and 10, respectively, are opened and with reduced velocity when the inlet valves are closed.
  • the drain water includes a high content of solid particles it is important to inject air into the pipe.
  • the air inlet arrangement permits emptying of the system when all inlet valves are closed and thus in creases the capacity of the system.
  • the air inlet arrangement effectively eliminates the necessity of accelerations and retardations of big water columns or water pistons and has a damping effect to pressure variations in the system.
  • the drain water arriving in pipe 1 l is normally split up into drops carried together with solid particles by the air stream. After removal of the air through the water separation tank 13 the drain water including solid particles falls down through the vertical leg 15 of the hydraulic closure 16 into the conventional street-sewer system 17.
  • a sanitary drain system for a building comprising,
  • At least one soil pipe having an outlet end
  • each said inlet valve is responsive to the vacuum in said soil pipe to remain closed in the absence of waste water in said drain at the inlet side of said valve
  • each said valve further being opened in the presence of waste water in said drain at the inlet side of said valve.
  • each inlet valve comprises flexible walls having inner surfaces which communicate with the valve interior and bear against each other,
  • each said valve comprises a tube formed of a flexible material and formed to have opposite wall portions which sealingly bear against each other.
  • valve comprises a partition wall between the inlet and the outlet of said valve, said partition wall being provided with a transverse slot dividing said partition wall into two flexible lips bearing against each other, the outlet of said valve forming a chamber which under the influence of the vacuum at the outlet end of said valve has a tendency to collapse in the longitudinal direction of said lips.

Landscapes

  • Engineering & Computer Science (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)
  • Structural Engineering (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Sewage (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Sanitary Device For Flush Toilet (AREA)
US11764A 1969-02-14 1970-02-16 Vacuum drain system Expired - Lifetime US3651524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE211169A SE328531C (sv) 1969-02-14 1969-02-14 Avloppssystem

Publications (1)

Publication Number Publication Date
US3651524A true US3651524A (en) 1972-03-28

Family

ID=20259395

Family Applications (1)

Application Number Title Priority Date Filing Date
US11764A Expired - Lifetime US3651524A (en) 1969-02-14 1970-02-16 Vacuum drain system

Country Status (6)

Country Link
US (1) US3651524A (de)
CA (1) CA925251A (de)
DE (1) DE2065735C3 (de)
FR (1) FR2035478A5 (de)
GB (1) GB1244946A (de)
SE (1) SE328531C (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928326A (en) * 1987-04-06 1990-05-29 Oy Wartsila Ab Vacuum sewer arrangement
WO1993009304A1 (en) * 1990-08-07 1993-05-13 Voelker Per Handling system for stable manure
WO1997016608A1 (en) * 1995-11-01 1997-05-09 Split Vision Development Ab A device in a waste disposal system in a building
WO1997026049A1 (en) * 1996-01-19 1997-07-24 Split Vision Development Ab A device at a building for preventing propagation of fire and/or fire gases and a method and a device for supply of fluid
US6243887B1 (en) 1998-07-01 2001-06-12 Evac International Oy Sewer system
EP1130180A3 (de) * 2000-02-08 2003-06-18 Evac International Oy Vertikales Abwasserableitungsrohr
US20060032531A1 (en) * 2004-05-19 2006-02-16 A Company Incorporated High rise tower sanitary service system
US20080047429A1 (en) * 2006-08-24 2008-02-28 Microfluidic Systems, Inc. Automated particle collection off of fan blades into a liquid buffer
US12188219B1 (en) * 2024-01-30 2025-01-07 Clean Restroom Rentals, Inc. Portable restroom system and a noise-reducing and less labor-intensive method for draining portable restrooms

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE443176B (sv) * 1981-03-27 1986-02-17 Waertsilae Oy Ab Avloppssystem av undertryckstyp

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK102615A (de) * 1957-08-16
US482439A (en) * 1892-09-13 liernur
IT608840A (de) * 1958-05-28 1900-01-01
GB680154A (en) * 1950-04-25 1952-10-01 George Arundell Gerald Cox Wal Improvements relating to removal of excrement
US2662724A (en) * 1948-12-27 1953-12-15 Kravagna Cut Check valve
US2793371A (en) * 1955-12-27 1957-05-28 Lester B Levesconte Backflow preventing means for receptor connected ends of soil pipes
US3034131A (en) * 1956-08-07 1962-05-15 Lent Constantin Paul Mobile space suit
US3047013A (en) * 1957-03-22 1962-07-31 William J Baumbach Diaphragm for water closets
US3115148A (en) * 1958-05-28 1963-12-24 Liijendahl Sven Algot Joel Sewerage systems
BE669967A (de) * 1965-09-22 1966-01-17
US3477949A (en) * 1966-10-07 1969-11-11 Liljendahl S A J Method of purifying waste liquid from water closets and other sanitary installations

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US482439A (en) * 1892-09-13 liernur
US2662724A (en) * 1948-12-27 1953-12-15 Kravagna Cut Check valve
GB680154A (en) * 1950-04-25 1952-10-01 George Arundell Gerald Cox Wal Improvements relating to removal of excrement
US2793371A (en) * 1955-12-27 1957-05-28 Lester B Levesconte Backflow preventing means for receptor connected ends of soil pipes
US3034131A (en) * 1956-08-07 1962-05-15 Lent Constantin Paul Mobile space suit
US3047013A (en) * 1957-03-22 1962-07-31 William J Baumbach Diaphragm for water closets
DK102615A (de) * 1957-08-16
IT608840A (de) * 1958-05-28 1900-01-01
US3115148A (en) * 1958-05-28 1963-12-24 Liijendahl Sven Algot Joel Sewerage systems
BE669967A (de) * 1965-09-22 1966-01-17
US3477949A (en) * 1966-10-07 1969-11-11 Liljendahl S A J Method of purifying waste liquid from water closets and other sanitary installations

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928326A (en) * 1987-04-06 1990-05-29 Oy Wartsila Ab Vacuum sewer arrangement
WO1993009304A1 (en) * 1990-08-07 1993-05-13 Voelker Per Handling system for stable manure
NO326708B1 (no) * 1995-11-01 2009-02-02 Split Vision Dev Ab Anordning ved avløpssystem
WO1997016608A1 (en) * 1995-11-01 1997-05-09 Split Vision Development Ab A device in a waste disposal system in a building
AU711210B2 (en) * 1995-11-01 1999-10-07 Split Vision Development Ab A device in a waste disposal system in a building
US6092549A (en) * 1995-11-01 2000-07-25 Eriksson; Bertil Device in a waste disposal system in a building
WO1997026049A1 (en) * 1996-01-19 1997-07-24 Split Vision Development Ab A device at a building for preventing propagation of fire and/or fire gases and a method and a device for supply of fluid
US6243887B1 (en) 1998-07-01 2001-06-12 Evac International Oy Sewer system
EP1130180A3 (de) * 2000-02-08 2003-06-18 Evac International Oy Vertikales Abwasserableitungsrohr
US20060032531A1 (en) * 2004-05-19 2006-02-16 A Company Incorporated High rise tower sanitary service system
US7124769B2 (en) * 2004-05-19 2006-10-24 A Company Incorporated High rise tower sanitary service system
US20080047429A1 (en) * 2006-08-24 2008-02-28 Microfluidic Systems, Inc. Automated particle collection off of fan blades into a liquid buffer
US7815718B2 (en) * 2006-08-24 2010-10-19 Microfluidic Systems, Inc. Automated particle collection off of fan blades into a liquid buffer
US12188219B1 (en) * 2024-01-30 2025-01-07 Clean Restroom Rentals, Inc. Portable restroom system and a noise-reducing and less labor-intensive method for draining portable restrooms

Also Published As

Publication number Publication date
FR2035478A5 (de) 1970-12-18
CA925251A (en) 1973-05-01
DE2065735C3 (de) 1980-06-04
DE2006998B2 (de) 1975-08-07
SE328531C (sv) 1973-07-23
GB1244946A (en) 1971-09-02
DE2006998A1 (de) 1970-09-03
DE2065735B2 (de) 1979-09-06
SE328531B (sv) 1970-09-14
DE2065735A1 (de) 1975-05-28

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