WO1994014516A1 - Flush water outlet valve - Google Patents

Flush water outlet valve Download PDF

Info

Publication number
WO1994014516A1
WO1994014516A1 PCT/FI1993/000551 FI9300551W WO9414516A1 WO 1994014516 A1 WO1994014516 A1 WO 1994014516A1 FI 9300551 W FI9300551 W FI 9300551W WO 9414516 A1 WO9414516 A1 WO 9414516A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
movable
valve
valve according
water outlet
Prior art date
Application number
PCT/FI1993/000551
Other languages
French (fr)
Inventor
Mikael Aaltonen
Original Assignee
Mariehamns Rostfria 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 Mariehamns Rostfria Ab filed Critical Mariehamns Rostfria Ab
Priority to NL9320053A priority Critical patent/NL194265C/en
Priority to DE4396773T priority patent/DE4396773T1/en
Priority to GB9511644A priority patent/GB2288748B/en
Priority to DE4396773A priority patent/DE4396773C2/en
Publication of WO1994014516A1 publication Critical patent/WO1994014516A1/en
Priority to DK064695A priority patent/DK171981B1/en
Priority to NO952364A priority patent/NO304819B1/en
Priority to FI952990A priority patent/FI113524B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/20—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being provided in an open container
    • B01D24/26—Upward filtration
    • B01D24/263—Upward filtration the filtering material being supported by pervious surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/38—Feed or discharge devices
    • B01D24/44—Feed or discharge devices for discharging filter cake, e.g. chutes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4668—Regenerating the filtering material in the filter by moving the filtering element

Definitions

  • the object of the invention is a flush water outlet valve intended for the cleaning of filter materials in a water purification basin.
  • the foul liquid is led via several different purification stages, via several basins.
  • the water to be cleaned is led through e.g. a sand or absorbent carbon layer.
  • a sand or absorbent carbon layer To enable the use of the filter layers most efficiently, these have to be cleaned regularly. This is generally done so that the filter layers are mixed in water and allowed to sediment, by which the foul accrued in the liquid, the floe, is separated floating on the surface or being lighter than the filter material.
  • the sands sinks first to the bottom and thereafter e.g. the absorbent carbon. There ⁇ after the water purification can be continued in the same way as before the cleaning of the filter layers.
  • valve construction of the subject invention provides a decisive improvement of the disadvantages presented above.
  • valve of the invention is characterized in what is presented in the claims.
  • An advantage of the subject invention is that it prevents filter material from being mixed with the waster water when rinsing the filter layers.
  • the height of the valve can moreover be adjusted steplessly.
  • the valve guide tubes are protected against wear or operational disturbances caused by the foul water.
  • the separation of the absorbent carbon or corresponding light material from the water and from the foul accrued is improved.
  • Fig. 1 presents a water purification basin in profile, with a flush water outlet valve in the middle of the basin (main ⁇ tenance bridge, basin, valve) .
  • Fig. 2 presents the water purification basin from above.
  • Fig. 3 presents the bottom part of the flush water outlet valve in profile.
  • Fig. 4 presents an enlargement of the upper part of fig. 3.
  • Fig. 5 presents the movable part of the fig. 3 flush water outlet valve.
  • Fig. 6 presents the shape of the opening of the fig. 5 valve.
  • Fig. 7 is the flush water outlet valve from above, and fig. 8 presents the sealing between the fixed and movable part of the valve.
  • Fig. 1 presents a water filter purification basin 1, with a pneumatically operated water outlet valve 2 placed in the middle.
  • the water to be purified is fed to the basin from the feeder opening 3.
  • the purified water is discharged through the outlet pipe after having passed through the filter layers 4 and 5.
  • the filter layers consisting of sand and absorbent carbon, are placed on top of each other.
  • the bottom layer is the layer 5, which is placed on the filter nozzle bottom 6, and on top of the sand layer 5 has been placed the absorbent carbon layer 4, the surface of which is beneath the lowest position of the opening of the adjustable flush water outlet valve.
  • the total thickness of the filter layers is approx. 1,5 m.
  • the flush water outlet valve is supported from the bottom 7 of the basin and from above in the bridge 8.
  • the water outlet valve 2 consists of a movable tube 10, which is steerable into the fixed tube 11 of the valve.
  • fig. 1 on the right side of the flush water outlet valve is shown the upper position of the valve, when the water is purified by letting it pass through the filter.
  • the water outlet valve is used for the discharge of the foul water so that the adjustable valve tube 10 is gradually lowered downwards according to the progress of the sedimentation.
  • Fig. 2 presents the purification basin from above. On the top of the basin has been attached a bar 9, from which there is a further connection along the bridge 8 to the edge of the basin.
  • Fig. 3-8 present more in detail the construction of the flush water outlet valve.
  • the fixed tube part of the flush water outlet valve 2 is bilobate so that its lower part 12 is narrower than the upper part 13.
  • the tube 10 can move to stop in the narrow part 12 in its lowest position.
  • the position is restricted by piston guards.
  • guide holes 14 and 15 both in the upper and lower part, in this case totally four holes.
  • the guide holes 14 and 15 of the tube are steered inside the upper part 13 to the vertically mounted guide tubes 16 and 17, along which the tube 10 is steered.
  • the guide tubes or bars 16 and 17 are attached from their lower part in the bottom part 12 of the tube and from their upper part e.g. by bolting in the bridge 8.
  • Figs. 4 present an enlargement of the sealing joints in the upper part 13 of the valve fixed tube and the movable tube 10.
  • fig. 8 there is a sealing 20 between the flanges 18 and 19 of the upper part 13, and these have been pressed together with a screw connection 21, with the help of which a scraper 22 has been placed against the tube 10 in the the upper part of said connection, for the cleaning the surface of tube 10 when the tube is pushed downwards, and moreover to keep the space between the tubes clean.
  • the scraper 22 is made of e.g. preformed polyethylene.
  • Fig. 5 and 6 present an especially favorable construction of the valve upper part, which more efficiently prevents the absorbent carbon from reaching the waste water.
  • the guard 23 is attached to the overflow flange 24 of the movable tube 10.
  • the guard consists of two encountering surfaces 25, 26. It surrounds the upper part of the valve. The waste water passes over the encountering spot. The surfaces are present ⁇ ed to encounter substantially vertically to each other.
  • the guard surface 26, along which the waste water is discharged to the valve, is the longest side, with an ascent of approx. 9 %, and suitably between 5-15 % and favorably between 8-10 %.
  • the guard is attached to the tube flange 24.
  • a sealing 28 is provided between the guard and the flange. It has been established that the absorbent carbon particles settle on the surface 26 so that their access to the valve outlet tube is prevented.
  • Fig. 7 presents the valve construction from above.
  • the fixing plates of the pneumatic cylinder is marked with number 30, in the middle of which the pneumatic cylinder has been attached to a draft pole 31 in order to control the movable tube.
  • the invention has above been described with reference to only one of its favorable forms of application.
  • the inven ⁇ tion is not to be considered as so limited, but all modifi ⁇ cations within the scope of the inventive idea defined by the enclosed claims are possible.
  • Different applications of the inside of the valve guide tubes are possible.
  • the shape of the basin can be different.
  • the diameter of the fixed tube can be the same in full length, provided the attachment of the guide tube can be implemented.
  • the thicknesses of the filter materials can vary.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Treatment By Sorption (AREA)
  • Details Of Valves (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The object of the invention is a flush water outlet valve intended for the cleaning of filter materials in a water purification basin, which flush water outlet valve consists of a fixed lower tube (11) and a movable upper tube (10), over the edge of which the foul water is led to the outlet tube (33), and the filter materials consist of substances with different density, e.g. sand and absorbent carbon layers (4, 5). For the cleaning of the materials according to the invention, the movable tube (10) is placed inside the lower tube (11) movable so that the movable upper tube can be adjusted according to the sedimentation of the filter materials.

Description

Flush water outlet valve
The object of the invention is a flush water outlet valve intended for the cleaning of filter materials in a water purification basin.
In waste water purification the foul liquid is led via several different purification stages, via several basins. In the final purification stage the water to be cleaned is led through e.g. a sand or absorbent carbon layer. To enable the use of the filter layers most efficiently, these have to be cleaned regularly. This is generally done so that the filter layers are mixed in water and allowed to sediment, by which the foul accrued in the liquid, the floe, is separated floating on the surface or being lighter than the filter material. During the sedimentation the sands sinks first to the bottom and thereafter e.g. the absorbent carbon. There¬ after the water purification can be continued in the same way as before the cleaning of the filter layers.
In order to achieve the best possible separating capacity for the cleaning of the filter layers, different kinds of eduction devices have been used. A scraper can be used, but its use in big basins is difficult, peripheral overflow edges can be used, but in these the filter layer easily mixes with the water floe. It is especially difficult to prevent the escaping of the absorbent carbon or correspond¬ ing material, apparently due to small differences in the density.
The valve construction of the subject invention provides a decisive improvement of the disadvantages presented above. For the implication of this the valve of the invention is characterized in what is presented in the claims.
An advantage of the subject invention is that it prevents filter material from being mixed with the waster water when rinsing the filter layers. The height of the valve can moreover be adjusted steplessly. The valve guide tubes are protected against wear or operational disturbances caused by the foul water. The separation of the absorbent carbon or corresponding light material from the water and from the foul accrued is improved.
The invention is below described more in detail with refer¬ ence to the enclosed drawings.
Fig. 1 presents a water purification basin in profile, with a flush water outlet valve in the middle of the basin (main¬ tenance bridge, basin, valve) .
Fig. 2 presents the water purification basin from above. Fig. 3 presents the bottom part of the flush water outlet valve in profile.
Fig. 4 presents an enlargement of the upper part of fig. 3. Fig. 5 presents the movable part of the fig. 3 flush water outlet valve. Fig. 6 presents the shape of the opening of the fig. 5 valve.
Fig. 7 is the flush water outlet valve from above, and fig. 8 presents the sealing between the fixed and movable part of the valve.
Fig. 1 presents a water filter purification basin 1, with a pneumatically operated water outlet valve 2 placed in the middle. The water to be purified is fed to the basin from the feeder opening 3. The purified water is discharged through the outlet pipe after having passed through the filter layers 4 and 5. The filter layers consisting of sand and absorbent carbon, are placed on top of each other. The bottom layer is the layer 5, which is placed on the filter nozzle bottom 6, and on top of the sand layer 5 has been placed the absorbent carbon layer 4, the surface of which is beneath the lowest position of the opening of the adjustable flush water outlet valve. The total thickness of the filter layers is approx. 1,5 m. The flush water outlet valve is supported from the bottom 7 of the basin and from above in the bridge 8. The water outlet valve 2 consists of a movable tube 10, which is steerable into the fixed tube 11 of the valve. In fig. 1 on the right side of the flush water outlet valve is shown the upper position of the valve, when the water is purified by letting it pass through the filter. When cleaning the filter layers, the filter layers are mixed in the water and allowed to sediment, the water outlet valve is used for the discharge of the foul water so that the adjustable valve tube 10 is gradually lowered downwards according to the progress of the sedimentation.
Fig. 2 presents the purification basin from above. On the top of the basin has been attached a bar 9, from which there is a further connection along the bridge 8 to the edge of the basin.
Fig. 3-8 present more in detail the construction of the flush water outlet valve. The fixed tube part of the flush water outlet valve 2 is bilobate so that its lower part 12 is narrower than the upper part 13. In the upper part 13 the tube 10 can move to stop in the narrow part 12 in its lowest position. When using a pneumatic system the position is restricted by piston guards. For the control of the motion there are in the movable tube 10 guide holes 14 and 15 both in the upper and lower part, in this case totally four holes. The guide holes 14 and 15 of the tube are steered inside the upper part 13 to the vertically mounted guide tubes 16 and 17, along which the tube 10 is steered. The guide tubes or bars 16 and 17 are attached from their lower part in the bottom part 12 of the tube and from their upper part e.g. by bolting in the bridge 8.
Figs. 4 present an enlargement of the sealing joints in the upper part 13 of the valve fixed tube and the movable tube 10. In fig. 8 there is a sealing 20 between the flanges 18 and 19 of the upper part 13, and these have been pressed together with a screw connection 21, with the help of which a scraper 22 has been placed against the tube 10 in the the upper part of said connection, for the cleaning the surface of tube 10 when the tube is pushed downwards, and moreover to keep the space between the tubes clean. The scraper 22 is made of e.g. preformed polyethylene.
Fig. 5 and 6 present an especially favorable construction of the valve upper part, which more efficiently prevents the absorbent carbon from reaching the waste water. The guard 23 is attached to the overflow flange 24 of the movable tube 10. The guard consists of two encountering surfaces 25, 26. It surrounds the upper part of the valve. The waste water passes over the encountering spot. The surfaces are present¬ ed to encounter substantially vertically to each other. The guard surface 26, along which the waste water is discharged to the valve, is the longest side, with an ascent of approx. 9 %, and suitably between 5-15 % and favorably between 8-10 %. The guard is attached to the tube flange 24. A sealing 28 is provided between the guard and the flange. It has been established that the absorbent carbon particles settle on the surface 26 so that their access to the valve outlet tube is prevented.
Fig. 7 presents the valve construction from above. The fixing plates of the pneumatic cylinder is marked with number 30, in the middle of which the pneumatic cylinder has been attached to a draft pole 31 in order to control the movable tube.
The invention has above been described with reference to only one of its favorable forms of application. The inven¬ tion is not to be considered as so limited, but all modifi¬ cations within the scope of the inventive idea defined by the enclosed claims are possible. Different applications of the inside of the valve guide tubes are possible. The shape of the basin can be different. The diameter of the fixed tube can be the same in full length, provided the attachment of the guide tube can be implemented. The thicknesses of the filter materials can vary.

Claims

1. A flush water outlet valve (2) intended for the cleaning of filter materials (4, 5) comprising of substances with different density in a water purification basin (1), which water outlet valve comprises a fixed lower tube (11) and a movable upper tube (10), having an edge over which the waste water is conducted to the tube (33), c h a r a c t e r i z e d in that the movable tube (10) is placed inside the lower tube (11) to be moved so that the movable upper tube (10) can be adjusted according to the sedimentation of the filter materials.
2. A valve according to claim 1, c h a r a c t e r i z e d in that the upper tube (10) can be steered along guide means (14, 15, 16, 17) provided inside the tubes (10, 11).
3. A valve according to claim 2, c h a r a c t e r i z e d in that the lower tube (11) contains guide tubes (16, 17) and the movable tube (10) contains guide holes (14, 15).
4. A valve according to claim 1, c h a r a c t e r i z e d in that a guard (23) is provided in the upper part of the movable valve tube (10) in the overflow edges to prevent the filter material from reaching the outlet tube (33).
5. A valve according to claim 4, c h a r a c t e r i z e d in that a scraper (22) has been attached to the upper part of the lower tube, which scraper has been placed against the outside of the movable tube (10) to prevent dirt from coming between the movable tube (10) and the fixed tube (11).
6. A valve according to claim 5, c h a r a c t e r i z e d in that the scraper (22) is of preformed polyethylene or corresponding material.
7. A valve according to claim 1, c h a r a c t e r i z e d in that the guard (23) surrounding the overflow edge, has two oblique surfaces (25, 26), the limit point of which is the spot over which the foul liquid has to flow to reach the outlet tube (33).
8. A valve according to claim 7, c h a r a c t e r i z e d in that from the oblique surfaces (25, 26) the ascent of the surface (26) on the basin side is 5-15%, favorably 6-10% and more favorably 8-10%.
PCT/FI1993/000551 1992-12-21 1993-12-21 Flush water outlet valve WO1994014516A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL9320053A NL194265C (en) 1992-12-21 1993-12-21 Method for cleaning filter material and water discharge assembly for this purpose.
DE4396773T DE4396773T1 (en) 1992-12-21 1993-12-21 Rinse water outlet valve
GB9511644A GB2288748B (en) 1992-12-21 1993-12-21 Flush water outlet valve
DE4396773A DE4396773C2 (en) 1992-12-21 1993-12-21 Spülwasserauslaßventil
DK064695A DK171981B1 (en) 1992-12-21 1995-06-08 Drain valve for flushing water
NO952364A NO304819B1 (en) 1992-12-21 1995-06-15 Discharge flush valve
FI952990A FI113524B (en) 1992-12-21 1995-06-16 Adjustable outlet valve for water purification basin flush water

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9203866-0 1992-12-21
SE9203866A SE509859C2 (en) 1992-12-21 1992-12-21 Spolavloppsventil

Publications (1)

Publication Number Publication Date
WO1994014516A1 true WO1994014516A1 (en) 1994-07-07

Family

ID=20388211

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1993/000551 WO1994014516A1 (en) 1992-12-21 1993-12-21 Flush water outlet valve

Country Status (7)

Country Link
DE (2) DE4396773T1 (en)
DK (1) DK171981B1 (en)
GB (1) GB2288748B (en)
NL (1) NL194265C (en)
NO (1) NO304819B1 (en)
SE (1) SE509859C2 (en)
WO (1) WO1994014516A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0819457A1 (en) * 1996-07-09 1998-01-21 Norbert Kosatko Process and apparatus for the filtration of sewage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3233357A1 (en) * 1982-09-08 1984-03-08 Passavant-Werke AG & Co KG, 6209 Aarbergen METHOD FOR CLEANING A LIQUID FILTER AND A SEPARATING SYSTEM CONTAINING IT
US4496464A (en) * 1983-10-03 1985-01-29 Hensley Clifford J Filter apparatus and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3233357A1 (en) * 1982-09-08 1984-03-08 Passavant-Werke AG & Co KG, 6209 Aarbergen METHOD FOR CLEANING A LIQUID FILTER AND A SEPARATING SYSTEM CONTAINING IT
US4496464A (en) * 1983-10-03 1985-01-29 Hensley Clifford J Filter apparatus and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0819457A1 (en) * 1996-07-09 1998-01-21 Norbert Kosatko Process and apparatus for the filtration of sewage

Also Published As

Publication number Publication date
NL9320053A (en) 1995-12-01
NO304819B1 (en) 1999-02-22
SE9203866L (en) 1994-06-22
SE9203866D0 (en) 1992-12-21
NO952364D0 (en) 1995-06-15
NL194265B (en) 2001-07-02
NO952364L (en) 1995-06-15
GB2288748A (en) 1995-11-01
SE509859C2 (en) 1999-03-15
GB9511644D0 (en) 1995-08-23
DE4396773C2 (en) 2002-08-08
DK64695A (en) 1995-06-08
NL194265C (en) 2001-11-05
DK171981B1 (en) 1997-09-08
DE4396773T1 (en) 1995-12-07
GB2288748B (en) 1996-08-14

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