EP1105588A1 - Procede et systeme permettant d'evacuer un flux residuaire et siphon associe - Google Patents

Procede et systeme permettant d'evacuer un flux residuaire et siphon associe

Info

Publication number
EP1105588A1
EP1105588A1 EP99938661A EP99938661A EP1105588A1 EP 1105588 A1 EP1105588 A1 EP 1105588A1 EP 99938661 A EP99938661 A EP 99938661A EP 99938661 A EP99938661 A EP 99938661A EP 1105588 A1 EP1105588 A1 EP 1105588A1
Authority
EP
European Patent Office
Prior art keywords
liquid
waste flow
discharge pipe
flow
acceleration
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.)
Withdrawn
Application number
EP99938661A
Other languages
German (de)
English (en)
Inventor
Robertus Cornelis Wilhelmus Maria Bente
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.)
Wisa BV
Original Assignee
Wisa BV
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 Wisa BV filed Critical Wisa BV
Publication of EP1105588A1 publication Critical patent/EP1105588A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/20—Siphon pipes or inverted siphons

Definitions

  • the invention relates to a method for discharging a waste flow consisting of liquid and solid parts, wherein the waste flow is accelerated at least once in that at least a part of the liquid is separated out of the waste flow, the separated liquid is accelerated and the accelerated liquid is fed back to the waste flow.
  • a method is known from US-A-3 661 261 and is used there to flush drains and manholes in a sewage system.
  • the speed of the waste flow is often not sufficient to transport the solid parts along the full length of the discharge pipe into the sewage system.
  • the consequence hereof is that these solid parts remain behind in a relatively flat portion of a discharge pipe and there form an obstacle on which the solid parts of subsequent flushing actions become lodged. An accumulation will thus be eventually created which will result in blockage of the discharge pipe.
  • a drawback of this method is that de flow increaser must take a relatively voluminous form in order to ensure a sufficient capacity and therefore a sufficiently great acceleration of the waste flow.
  • a flow increaser is thus currently being marketed by applicant under the name of " Gustavsberg' s Water Saving System” , which is provided with a relatively narrow but high tank which is so large that it can only be considered suitable for use in high-rise projects.
  • Also known is a flow increaser of applicant with a relatively flat structure which is intended for installation in the crawl-space of low-rise dwellings. This flow increaser, which is described in WO 98/03743, while being lower is also wider than the above described model, so that a relatively large amount of space must also be kept clear therefor.
  • US-A-3 661 261 which comprises the measures of the preamble of claim 1.
  • This method is applied in the draining of waste flows in a municipal sewage system and has for its object to prevent accumulation of solid parts in for instance drains or manholes .
  • a part of the waste flow is drawn off and held in a storage tank. Drawing-off takes place by extracting air at the top of the tank using a water pump. The drawn-off part of the waste flow is thus held fast by the thus created underpressure.
  • a valve is lifted by a float, whereby air can flow in and the drawn-off liquid flows back into the main stream and thus accelerates it.
  • the invention now has for its object to provide a method of the above described type, wherein said drawbacks do not occur. According to the invention this is achieved in such a method in that at least the separation and/or acceleration of the liquid is carried out in hydrodynamic manner.
  • the flow increaser can be embodied considerably more compactly by guiding therethrough only that part of the waste flow which actually contributes to the acceleration, i.e. the liquid. This is the particular result of the fact that the flow increaser is normally slightly overdimensioned because the speed in the flow increaser itself is relatively low and the danger of blockage is therefore relatively high.
  • the response of the flow increaser is in this way improved because it will no longer be influenced by the presence of solid parts in the flow increaser, while the acceleration caused by the flow increaser moreover becomes reproducible .
  • the invention further relates to a system for discharging a waste flow consisting of liquid and solid parts which is adapted to perform the above described method.
  • a discharge system which can comprise at least one discharge pipe for the waste flow, means connected to the discharge pipe for separating at least a part of the liquid from the waste flow, means placed in series with the separating means for accelerating the separated liquid and means connected to the acceleration means for feeding the accelerated liquid back to the waste flow, is characterized in that at least the separating means and/or the acceleration means are of a hydrodynamic nature. Due to the presence of the separating means it is possible to prevent solid parts flowing through the acceleration means, whereby these latter can thus be given a relatively compact form, while the operation thereof is moreover improved. Because these means are further of a hydrodynamic nature, the system is simple in structure and has no moving parts, while the operation thereof is controlled by the waste flow itself. No separate drive is therefore required.
  • the acceleration means can herein be adapted to collect the separated liquid and to accelerate it only after a determined volume has been reached.
  • the acceleration means can for instance comprise for this purpose a siphon installation.
  • the siphon installation is then preferably provided with a feed opening which is connected to a substantially vertical part of the discharge pipe, and the separating means comprise an inflow edge at least partially bounding the feed opening and connecting smoothly onto a wall of the substantially vertical part of the discharge pipe.
  • the liquid can be separated very simply by making use of the fact that the liquid will flow predominantly along the walls of the vertical part of the discharge pipe, while the solid parts usually drop downward through the middle of the pipe.
  • the separating means further comprise a deflecting edge located opposite the inflow edge and at least partially bounding the feed opening, a narrow opening can be created such that the entry of solid parts is prevented in effective manner.
  • the inflow edge herein preferably takes a radially outward inclining form and the deflecting edge a radially inward inclining form.
  • the liquid flow to the siphon installation is thus on the one hand enhanced, while a barrier directed practically transversely of the flow is on the other hand erected against solid parts.
  • the siphon installation can be arranged to the side of the standing part of the discharge pipe.
  • the siphon installation preferably runs substantially parallel to the standing part of the discharge pipe, whereby this pipe need in fact only have a local thickening.
  • the siphon installation is thus suitable for simple accommodation in an existing pipe shaft and does not have to be placed in for instance a crawl-space. This is advantageous when such a discharge system has to be installed in an existing building during a renovation project, while it is also of significance in new housebuilding, wherein the making of crawl-spaces is increasingly being dispensed with.
  • said installation is then preferably arranged concentrically round the standing part of the discharge pipe.
  • Such a concentric siphon installation can in addition be manufactured and installed relatively simply and at low cost.
  • the invention also relates to a siphon installation for use in a discharge system as described above .
  • Fig. 1 is a partly cut-away, perspective view of a part of a discharge system according to a first embodiment of the invention
  • Fig. 2 shows a cross-sectional perspective view of a siphon installation as applied in the system of fig.
  • Fig. 3 and 4 show views corresponding with fig.
  • Fig. 5 is a schematic cross-sectional view of a siphon installation according to a second embodiment of the discharge system before use, and
  • FIG. 6 and 7 are views corresponding with fig. 5 of the siphon installation during different stages of use.
  • a system 1 for discharging a waste flow 2 which consists of liquid 3 and solid parts 4 comprises a discharge pipe 5 with a substantially vertical or standing part 6 and a substantially horizontal or lying part 7 (fig. 1) .
  • discharge system 1 is provided with hydrodynamic means 8 for accelerating waste flow 2.
  • hydrodynamic means 8 for accelerating waste flow 2.
  • These means are arranged in the standing conduit part 6 and in the shown embodiment comprise a siphon installation 9 arranged concentrically round this conduit part 6.
  • Such a siphon installation has no moving parts and is operated by the waste flow itself.
  • siphon installation 9 On the inflow side of siphon installation 9 are arranged means 10 for separating at least part of the liquid 3 from waste flow 2.
  • These separating means 10 comprise a radially outward inclining inflow edge 12 connecting smoothly onto a wall 11 of standing conduit part 6, and a deflecting edge 13 located opposite inflow edge 12 which, as seen in the direction of fall, inclines radially inward (fig. 2) .
  • These two edges 12, 13 bound an annular feed opening 14 of siphon installation 9.
  • the siphon installation 9 itself comprises a likewise annular tank 15 which is connected to feed opening 14 and is provided with a discharge opening 16 arranged on the underside of tank 15.
  • Discharge opening 16 is connected to a riser pipe 17 which likewise takes an annular form.
  • Riser pipe 17 is in turn connected over a bend part 18 to an annular fall pipe 19.
  • On the underside of fall pipe 19 is arranged a bent or curved pipe part 20 which functions as a liquid seal but which is dimensioned such that it is open in the rest position. This bent or curved pipe part 20 functioning as liquid seal then debouches in the standing part 6 of discharge pipe 5.
  • Tank 15, riser pipe 17, fall pipe 19 and liquid seal 20 are defined by a number of concentric cylinder walls 21, 22, 23 and 24 which are mutually connected by means of radially running partitions 25.
  • Siphon installation 9 is therefore of exceptionally simple construction and can be manufactured at very low cost .
  • the feed side and the discharge side of the siphon installation are mutually communicating via conduit part 6, no vent line is necessary therebetween as in conventional flow increasers .
  • discharge system 1 When a toilet is flushed the waste flow 2 coming therefrom will flow through the standing conduit part 6 to the lying conduit part 7.
  • the liquid 3 herein flows mainly along conduit wall 11, while solid parts 4 drop through the middle of conduit 6.
  • the liquid 3 then follows inflow edge 12, which connects smoothly onto conduit wall 11, and thus flows into tank 15 where in the first instance it is collected (fig. 3) .
  • the solid parts 4 fall further through the middle of conduit part 6 together with a small part of the liquid. Since only little liquid is thus available to transport solid parts 4 further, these latter will collect at the beginning of the lying conduit part 7.
  • the liquid level in tank 15 and in riser pipe 17 rises further until it eventually reaches the upper edge 26 of cylinder wall 23.
  • tank 15 of siphon installation 9 is not annular, nor is it arranged concentrically round the standing conduit part 6.
  • Tank 15 is instead formed by a vessel of random cross-section, in which is arranged a separate discharge pipe which consists successively of a riser pipe 17, a fall pipe 19 and a U-shaped pipe part 20 which functions as liquid seal and which also debouches into standing pipe part 6.
  • installation 9 can herein be provided with siphon enhancing means, for instance of the type as shown and described in applicant's above mentioned patent publication WO 98/03743.
  • siphon enhancing means for instance of the type as shown and described in applicant's above mentioned patent publication WO 98/03743.
  • the tank takes up more space than the concentric tank of the first embodiment, it is also the case here that the solid parts

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

L'invention concerne un procédé permettant d'évacuer un flux résiduaire constitué de parties liquides et de parties solides, ce procédé consistant à séparer le liquide du reste du flux résiduaire. L'invention concerne également un système (1) permettant de réaliser ce procédé au moyen d'un tuyau d'évacuation (5) du flux résiduaire, d'un dispositif relié au tuyau d'évacuation et destiné à séparer le liquide du reste du flux résiduaire, d'un dispositif (8) placé en série sur le dispositif de séparation de façon à accélérer le liquide séparé, enfin d'un dispositif relié au dispositif d'accélération de façon à réinjecter le liquide accéléré dans le flux résiduaire. Le dispositif de séparation et/ou le dispositif d'accélération sont hydrodynamiques. Le dispositif d'accélération peut comporter un siphon (9) qui peut être installé sur le côté d'une partie verticale (6) du tuyau d'évacuation. Ce siphon peut également être installé de façon concentrique autour de ladite partie verticale du tuyau d'évacuation.
EP99938661A 1998-08-06 1999-08-06 Procede et systeme permettant d'evacuer un flux residuaire et siphon associe Withdrawn EP1105588A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1009816A NL1009816C2 (nl) 1998-08-06 1998-08-06 Werkwijze en systeem voor het afvoeren van een afvalstroom en daarbij toe te passen hevelinstallatie.
NL1009816 1998-08-06
PCT/NL1999/000503 WO2000008267A1 (fr) 1998-08-06 1999-08-06 Procede et systeme permettant d'evacuer un flux residuaire et siphon associe

Publications (1)

Publication Number Publication Date
EP1105588A1 true EP1105588A1 (fr) 2001-06-13

Family

ID=19767617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99938661A Withdrawn EP1105588A1 (fr) 1998-08-06 1999-08-06 Procede et systeme permettant d'evacuer un flux residuaire et siphon associe

Country Status (4)

Country Link
EP (1) EP1105588A1 (fr)
AU (1) AU5309799A (fr)
NL (1) NL1009816C2 (fr)
WO (1) WO2000008267A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1029345C2 (nl) * 2005-06-27 2006-12-28 Wisa Bv Werkwijze en systeem voor het afvoeren van een afvalstroom uit een toilet en daarbij toe te passen hevelinstallatie.
EP1971725A4 (fr) * 2006-01-12 2010-12-08 Caroma Ind Ltd Dispositif, permettant de conserver des conduits d'evacuation de reseau d'egout degages, installe sur des toilettes ou des reservoirs de chasse d'eau a faible volume
WO2017202116A1 (fr) * 2016-05-23 2017-11-30 宁小莹 Accélérateur de flux d'eau

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661261A (en) * 1970-12-31 1972-05-09 Fmc Corp Method and apparatus for flushing sewers
DE4342612A1 (de) * 1993-12-14 1995-06-22 Steinhardt Lothar Spülvorrichtung
CH690106A5 (de) * 1994-07-19 2000-04-28 Helmut Kastner Kläranlage, insbesondere Bodenfilterkläranlagen, mit Vorrichtung zur intermittierenden Beschickung des Klärbeckens
EP0914526A1 (fr) 1996-07-24 1999-05-12 Wisa B.V. Dispositif de siphon

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0008267A1 *

Also Published As

Publication number Publication date
AU5309799A (en) 2000-02-28
WO2000008267A1 (fr) 2000-02-17
NL1009816C2 (nl) 2000-02-15

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