EP1397566B1 - Vacuum sewer system - Google Patents
Vacuum sewer system Download PDFInfo
- Publication number
- EP1397566B1 EP1397566B1 EP02780838A EP02780838A EP1397566B1 EP 1397566 B1 EP1397566 B1 EP 1397566B1 EP 02780838 A EP02780838 A EP 02780838A EP 02780838 A EP02780838 A EP 02780838A EP 1397566 B1 EP1397566 B1 EP 1397566B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- discharge valve
- waste
- valve
- vacuum
- sewer 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 - Lifetime
Links
- 239000002699 waste material Substances 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 16
- 241000237858 Gastropoda Species 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000005273 aeration Methods 0.000 claims description 19
- 239000012190 activator Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 7
- 239000003570 air Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
- E03D5/01—Special constructions of flushing devices, e.g. closed flushing system using flushing pumps
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
- E03F1/006—Pneumatic sewage disposal systems; accessories specially adapted therefore
Definitions
- the invention relates to a method for transporting waste material in a vacuum sewer system according to the preamble of claim 1.
- the invention also relates to a vacuum sewer system. (see e.g. US-A-6 216 285).
- An object of the invention is to provide a method by which the above-mentioned disadvantages are avoided and which makes it possible to transport the waste efficiently with simple means.
- the object is attained by a method according to the invention the main features of which are given in claim 1.
- the basic idea of the invention is to determine the length of the flush sequence automatically according to the amount of waste, i.e. the size of waste batch or discrete waste slug to be transported, in which case the amount of air per flush sequence is constant.
- the flow through the first discharge valve is accelerating in nature in which case the flow rate increases from the starting moment of the flow, in other words from the beginning of the waste batch, until the flow stops.
- the so-called after-air subsequent to the waste batch accelerates the flow rate even more in proportion when the flow resistance is smaller.
- the flow resistance is in direct proportion to the noise level.
- the amount of after-air passing through the first discharge valve is optimized, particularly minimized, in which case the flow rates decrease, which lowers the noise level significantly.
- the function of the flush or discharge sequence is pneumatically controlled with a control means by using vacuum prevailing in the vacuum sewer system.
- the closing of the second discharge valve is preferably controlled in a way that with the control means, the connection of the vacuum to an auxiliary valve for opening thereof it is activated, so that a flow connection is formed between the waste batch passing location after the first discharge valve and the second discharge valve, in which case the auxiliary valve is closed after a predetermined time since the waste batch flow through the first discharge valve has stopped.
- the control means advantageously activates also the connection of the vacuum to the first discharge valve for opening of the same, in which case the closing takes place after a predetermined time since the waste batch flow through the first discharge valve has stopped.
- control means advantageously activates the connection of the vacuum to the rinse water valve for opening of the same, in which case the rinse water valve is closed after a predetermined time subsequent to the closing of the first discharge valve.
- control means can advantageously activate the connection of the vacuum to the said aeration valve for opening the same after a predetermined time subsequent to the opening of the first discharge valve for passing transport air into the sewer pipe, in which case the aeration valve is closed after a predetermined time subsequent to the opening of the second discharge valve.
- the predetermined times related to the above-mentioned valves are advantageously controlled with the help of flow restrictors in connection with the control means and said valves.
- the flow restrictors are advantageously nozzles, whereby by changing their dimensions, the desired time effect can be obtained.
- an adjustable valve arrangement can be used.
- the present invention further relates to a vacuum sewer system, the main features of which are given in claim 11. Preferred embodiments of the vacuum sewer system are given in claims 12 to 18.
- a control system is connected to the toilet unit 1 which automatically controls the length of the toilet unit 1 flush cycle according to the amount of waste transported from the toilet bowl 11 to the sewer pipe 2.
- the control system includes a control means 5, from which there is a flow connection, by means of tube means, to the second section of the sewer pipe 22, which is under a constant vacuum maintained in the vacuum sewer system.
- the flow connection is arranged at a location 6 situated after the second discharge valve 4, i.e. on the waste receiving side of the second discharge valve 4.
- a flow connection by means of a tube means is arranged from the control means 5 to the first discharge valve 3 and to a rinse water valve 10 of the toilet unit.
- a pneumatic activator means 12 is connected to the control means 5 by means of the tube means forming the flow connection.
- a second tube portion means 72 leading to valve 7, which branches off a third tube means 53 leading from the control means 5 to the auxiliary valve 8 is provided with a second flow restrictor 32.
- a third flow restrictor 33 In the rinse water valve 10 there is arranged a third flow restrictor 33 and in the control means 5 there is arranged a fourth flow restrictor 34.
- the above-mentioned flow restrictors 31, 32, 33 and 34 are preferably nozzles in which case, by changing the dimensions of the nozzles, the desired effect can be provided.
- the adjustable valve arrangement can be used.
- the vacuum sewer system according to the example has the following operation principle.
- the first discharge valve 3 When the toilet unit 1 is in state of rest the first discharge valve 3 is closed.
- the aeration valve 7 and the auxiliary valve 8 connected to the first section 21 of the sewer pipe 2 are also closed.
- the auxiliary valve 8 is a diaphragm valve, which in a closed-position shuts off the connection between the second tube means 52 and an eight tube means 58 and which correspondingly opens said connection when it is in an open-position.
- the second discharge valve 4 is open because it is connected to the sewer pipe 2 (more exactly to the second section 22 of the sewer pipe 2, which is under the vacuum maintained in the vacuum system) through a connection formed by the first tube portion means 71 and the second tube means 52.
- the intention is to flush the waste down to the sewer pipe 2 and the flush sequence is activated by affecting the pneumatic activator means 12.
- This can preferably be for example a flush button in connection with a bellows system, which by pressing the flush button provides an air pulse through a fourth tube means 54 to the direction of the control means 5.
- the air pulse created by the pneumatic activator means 12 is arranged to affect the control means 5 in such a way that the vacuum is connected from the sewer pipe 2 via the first tube means 51 to the first discharge valve 3 through a fifth tube means 55 connected thereto, in which case the first discharge valve opens up.
- the vacuum is connected to the auxiliary valve 8 through the third tube means 53, to the rinse water valve 10 through a sixth tube means 56 and to the aeration valve 7 through the third tube means 53 and the second tube portion means 72, in which case the said three valves open up as well.
- the aeration valve 7 is arranged to open with a predetermined delay under the influence of the second flow restrictor 32.
- the ambient air pressure prevailing in the toilet bowl 11 pushes the waste in the bowl and rinse water into the sewer pipe 2 maintained under vacuum through the discharge valve 3.
- the waste displaces or moves along intermittently and in the form of so-called waste batches or discrete waste slugs, which fill up the diameter of the sewer pipe completely. This also means that the waste slugs are followed by a pressure front higher than said underpressure.
- a flow connection is arranged to the auxiliary valve 8 by means of the eight tube means 58.
- the pressure front in question causes a sudden increase in pressure which moves under the influence of the said vacuum control of the eight tube means 58 through the auxiliary valve 8 in its open-position and further via the second tube means 52 to the second discharge valve 4 and closes it. Therefore, the flow through the first discharge valve 3 stops.
- the ambient air pressure is connected to the tube means 53, 72, 55 and 56 and it has an effect on the first discharge valve 3, the auxiliary valve 8, the aeration valve 7 and the rinse water valve 10, in which case the first discharge valve 3 and the auxiliary valve 8 close up almost immediately.
- the aeration valve 7 and the rinse water valve 10 on the other hand stay open for a while because of the second flow restrictor 32 and the third flow restrictor 33 arranged therewith.
- By extending the opening time of the rinse water valve 10 there is a water mirror provided in the toilet bowl 11 for the next flush cycle.
- the auxiliary valve 8 has closed up, in other words it is in its closed-position, there is air discharging (to the direction of the vacuum affecting the second section of the sewer pipe 22) through the first flow restrictor 31 (via the connection created by the second tube means 52, the first tube portion means 71 and the first tube means 51), in which case the second discharge valve 4 opens up again under the vacuum directed thereto.
- the aeration valve 7 is still open (under the influence of the second flow restrictor 32), in which case there is transport air further helping the transportation of the waste slug flowing into the first section of the sewer pipe 21, whereby the waste is forced into the second section of the sewer pipe 22 and further into the waste receiving space.
- the aeration valve 7 closes up after which the flush or discharge cycöe has been completed and the section of the vacuum sewer system in question has returned to the above-mentioned state of rest for a new flush or discharge period.
- the first, second, third and fourth flow restrictors 31, 32, 33 and 34 are preferably nozzles so that with the dimensions of the nozzles, the control of the vacuum sewer system can be affected as desired.
- the opening time of the discharge valve 3 is adjusted with the fourth nozzle 34 of the control means 5. This control also affects the opening time of the rinse water valve 10, the auxiliary valve 8 and the aeration valve 7. A smaller nozzle extends the vacuum duration of action, in other words the opening time of said valves.
- the feeding time and amount of the auxiliary transport air is controlled with the second nozzle 32, in which case a smaller nozzle adds to the feeding quantity of the transport air by keeping the aeration valve 7 open for a longer time.
- the first nozzle 31 on the other hand has the following effect on the operation of the second discharge valve 4.
- a smaller nozzle speeds up the closing up of the valve and therefore it is possible to influence the amount of air driven with the waste slug through the toilet bowl 11 of the toilet unit 1.
- the amount of air conveyed to the sewer pipe 2 varies according to the quantity of the waste slug.
- said air amount per flush cycle is always constant.
- the level of the water mirror is adjusted in the toilet bowl 11 by means of the third nozzle 33 of the rinse water valve 10.
- the total water amount is determined by interaction of the third 33 and the fourth nozzle 34 in which case smaller nozzle dimensions increase the amount of the fed rinsing water by prolonging the opening time of the valve.
Abstract
Description
Claims (18)
- A method for transporting waste material in a vacuum sewer system, including a source of waste (1, 11), for example a toilet unit, a shower unit or a sink, a sewer pipe (2,21, 22), a first discharge valve (3) between the source of waste (1) and the sewer pipe (2), a second discharge valve (4) in the sewer pipe (2), a waste receiving space and means (100) for generating vacuum in the sewer pipe,
in which method
waste is transported in the form of waste slugs,
in a first phase, the waste slug is transported from the source of waste (1) through the first discharge valve (3) into the sewer pipe (2, 21, 22) by way of vacuum, and
in a second phase, waste is transported further in the sewer pipe (2, 21, 22) in the direction of the receiving space,
characterized in that
in the first phase, the pressure after the waste slug higher than said vacuum, is directed from a predetermined location (9) after the first discharge valve (3) to the second discharge valve (4) for closing the same so that the flow through the first discharge valve stops, and
in the second phase, a vacuum connection to the second discharge valve (4) is activated for opening the same in order to transport the waste further in the sewer pipe (2, 21,22) by way of the prevailing vacuum. - A method according to claim 1, characterized in that a vacuum connection to an auxiliary valve (8) is activated by a control means (5,12) for opening the same so that a flow connection is formed between the location (9) after the first discharge valve (3) and the second discharge valve (4).
- A method according to claim 2, characterized in that the auxiliary valve (8) is closed after a predetermined time after the flow of the waste slug through the first discharge valve (3) has stopped.
- A method according to claim 1, characterized in that a vacuum connection to the first discharge valve (3) is activated by the control means (5, 12) for opening the same.
- A method according to claim 4, characterized in that the first discharge valve (3) is closed after a predetermined time after the waste slug flow through the first discharge valve has stopped.
- A method according to claim 1, characterized in that a vacuum connection to a rinse water valve (10) is activated by a control means (5,12) for opening the same in order to supply rinse water to the source of waste (1, 11).
- A method according to claim 6, characterized in that the rinse water valve (10) is closed after a predetermined time after the closing of the first discharge valve (3).
- A method according to claim 1, characterized in that a vacuum connection to an aeration valve (7) leading to the sewer pipe (21) is activated for opening the same after a predetermined time after the opening of the first discharge valve (3) for supplying transport air into the sewer pipe (21).
- A method according to claim 6, characterized in that the aeration valve (7) is closed after a predetermined time after the opening of the second discharge valve (4).
- A method according to any of the preceding claims, characterized in that the predetermined times related to opening and closing of the first discharge valve (3), the second discharge valve (4), the aeration valve (7) and the rinse water valve (10) are controlled by means of flow restrictors (31, 32, 33, 34).
- A vacuum sewer system, which includes a source of waste (1, 11), for example a toilet unit, a shower unit or a sink, a sewer pipe (2, 21, 22), a first discharge valve (3) between the source of waste (1) and the sewer pipe (1, 21), a second discharge valve (4) in the sewer pipe (2), a waste receiving space and means (100) for generating vacuum in the sewer pipe, characterized in that in a first section (21) of the sewer pipe (2) at a predetermined location (9) after the first discharge valve (3) a flow connection (58, 8, 52) is arranged to the second discharge valve (4).
- A vacuum sewer system according to claim 11, characterized in that said flow connection includes an eight tube means (58) between said location (9) and an auxiliary valve (8) as well as a second tube means (52) between the auxiliary valve (8) and the second discharge valve (4), and that the auxiliary valve (8) is, through a third tube means (53), in fluid communication with a control means (5, 12) which is, through a first tube means (51), in fluid communication with a second section (22) of the sewer pipe (2) after the second discharge valve (4).
- A vacuum sewer system according to claim 12, characterized in that the first discharge valve (3) is in fluid communication with the control means (5, 12) through a fifth tube means (55).
- A vacuum sewer system according to claim 12 or 13, characterized in that the vacuum sewer system includes a rinse water valve (10), which is in fluid communication with the control means (5, 12) through a sixth tube means (56), and that the rinse water valve (10) is in fluid communication with the toilet bowl (11) of the toilet unit (1) via a seventh tube means (57).
- A vacuum sewer system according to any of claims 12 to 14, characterized in that the vacuum sewer system includes an aeration valve (7) which is in fluid communication with the control means (5, 12) through a third tube means (53) and a second tube portion means (72), and that the aeration valve (7) is in fluid communication with the first section (21) of the sewer pipe (2).
- A vacuum sewer system according to any of claims 12 to 15, characterized in that the first tube means (51) and the second tube means (52) are connected to each other by means of a first tube portion means (71) which is provided with a first flow restrictor (31), that a fourth flow restrictor (34) is attached to the control means (5), that a second flow restrictor (32) is attached to the aeration valve (7), and that a third flow restrictor (33) is attached to the rinse water valve (10).
- A vacuum sewer system according to claim 16, characterized in that said flow restrictors are nozzles or adjustable valves.
- A vacuum sewer system according to any of claims 12 to 17, characterized in that there is a pneumatic activator means (12) connected to the control means (5) through a fourth tube means (54).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20011331A FI110536B (en) | 2001-06-21 | 2001-06-21 | Process for transporting waste material in a vacuum sewer system |
FI20011331 | 2001-06-21 | ||
PCT/FI2002/000462 WO2003000999A1 (en) | 2001-06-21 | 2002-05-30 | Vacuum sewer system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1397566A1 EP1397566A1 (en) | 2004-03-17 |
EP1397566B1 true EP1397566B1 (en) | 2004-10-06 |
Family
ID=8561471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02780838A Expired - Lifetime EP1397566B1 (en) | 2001-06-21 | 2002-05-30 | Vacuum sewer system |
Country Status (9)
Country | Link |
---|---|
US (1) | US20040237183A1 (en) |
EP (1) | EP1397566B1 (en) |
JP (1) | JP2004530819A (en) |
KR (1) | KR20040020931A (en) |
CN (1) | CN1518625A (en) |
AT (1) | ATE278847T1 (en) |
DE (1) | DE60201536T2 (en) |
FI (1) | FI110536B (en) |
WO (1) | WO2003000999A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI117298B (en) * | 2005-01-25 | 2006-08-31 | Evac Int Oy | vacuum Drainage |
FI118231B (en) * | 2006-01-30 | 2007-08-31 | Evac Int Oy | vacuum Drainage |
FI118232B (en) | 2006-03-31 | 2007-08-31 | Evac Int Oy | vacuum Drainage |
CN100386126C (en) * | 2006-11-28 | 2008-05-07 | 湖北开元化工科技股份有限公司 | Blow-down unit |
FI125301B (en) * | 2006-12-21 | 2015-08-31 | Evac Oy | Vacuum drainage system and method for using a vacuum drainage system |
CN100491659C (en) * | 2007-05-17 | 2009-05-27 | 董晓青 | Key-controlling air pressure type flushing device |
JP5865611B2 (en) * | 2011-06-24 | 2016-02-17 | 東日本旅客鉄道株式会社 | Drainage device and drainage system |
DE202013008298U1 (en) * | 2013-09-20 | 2014-12-22 | Evac Gmbh | Vacuum toilet with alternating squeeze valve closing |
KR101514930B1 (en) * | 2014-11-10 | 2015-04-24 | 주식회사 호두 | Auto discharge equipement of vacuum toilet system with high safety |
FI127077B (en) | 2016-04-19 | 2017-10-31 | Evac Oy | A method for controlling a vacuum system and a vacuum system |
KR101672515B1 (en) * | 2016-05-24 | 2016-11-17 | 주식회사 호두 | vacuum suction device for Sewage discharge |
RU2745760C2 (en) * | 2016-08-18 | 2021-03-31 | Эвак Ой | Method and device for processing medical waste collected in a medical waste tank |
US10683652B1 (en) * | 2017-01-25 | 2020-06-16 | Mag Aerospace Industries, Llc | Multiple rinse injections to reduce sound in vacuum toilets |
KR102005320B1 (en) * | 2018-02-28 | 2019-07-30 | 화인정밀 주식회사 | apparatus for regulating discharge of high speed flow for flush and discharge valve |
DE102018006919A1 (en) * | 2018-08-31 | 2020-03-05 | ACO Severin Ahlmann GmbH & Co Kommanditgesellschaft | Vacuum sewage device, method and electronic control unit for controlling a vacuum sewage device |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI77082C (en) * | 1987-04-06 | 1989-01-10 | Waertsilae Oy Ab | Vacuum Drainage Device |
ES2062422T3 (en) * | 1990-01-02 | 1994-12-16 | Metra Oy Ab | VACUUM DRAIN DEVICE. |
SE501960C2 (en) * | 1990-04-20 | 1995-06-26 | Waertsilae Oy Ab | Vacuum toilet system with vacuum generator with substantially constant operating time |
SE469832B (en) * | 1992-02-05 | 1993-09-27 | Evac Ab | Vacuum toilet system with odor filter |
US5873135A (en) * | 1994-12-16 | 1999-02-23 | Evac Ab | Air pressure driven vacuum sewer system |
DE69511695T2 (en) * | 1995-09-13 | 1999-12-23 | Evac Ab Bromoella | Vacuum sewage system regulated by a membrane |
FI105120B (en) * | 1998-12-23 | 2000-06-15 | Evac Int Oy | Device for transporting waste |
US6305403B1 (en) * | 1999-09-16 | 2001-10-23 | Evac International Oy | Aeration apparatus for a vertical riser in a vacuum drainage system |
-
2001
- 2001-06-21 FI FI20011331A patent/FI110536B/en active
-
2002
- 2002-05-30 US US10/478,651 patent/US20040237183A1/en not_active Abandoned
- 2002-05-30 KR KR10-2003-7016615A patent/KR20040020931A/en not_active Application Discontinuation
- 2002-05-30 JP JP2003507369A patent/JP2004530819A/en active Pending
- 2002-05-30 DE DE60201536T patent/DE60201536T2/en not_active Expired - Fee Related
- 2002-05-30 WO PCT/FI2002/000462 patent/WO2003000999A1/en active IP Right Grant
- 2002-05-30 AT AT02780838T patent/ATE278847T1/en not_active IP Right Cessation
- 2002-05-30 CN CNA028125231A patent/CN1518625A/en active Pending
- 2002-05-30 EP EP02780838A patent/EP1397566B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1518625A (en) | 2004-08-04 |
KR20040020931A (en) | 2004-03-09 |
FI20011331A0 (en) | 2001-06-21 |
EP1397566A1 (en) | 2004-03-17 |
FI110536B (en) | 2003-02-14 |
WO2003000999A1 (en) | 2003-01-03 |
ATE278847T1 (en) | 2004-10-15 |
FI20011331A (en) | 2002-12-22 |
US20040237183A1 (en) | 2004-12-02 |
DE60201536D1 (en) | 2004-11-11 |
JP2004530819A (en) | 2004-10-07 |
DE60201536T2 (en) | 2005-01-27 |
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