EP1066481A1 - Float valve for filling a flush tank - Google Patents
Float valve for filling a flush tankInfo
- Publication number
- EP1066481A1 EP1066481A1 EP99973655A EP99973655A EP1066481A1 EP 1066481 A1 EP1066481 A1 EP 1066481A1 EP 99973655 A EP99973655 A EP 99973655A EP 99973655 A EP99973655 A EP 99973655A EP 1066481 A1 EP1066481 A1 EP 1066481A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- valve
- section
- float
- cross
- 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- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
- F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
- F16K31/24—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with a transmission with parts linked together from a single float to a single valve
- F16K31/26—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with a transmission with parts linked together from a single float to a single valve with the valve guided for rectilinear movement and the float attached to a pivoted arm
Definitions
- the invention relates to a float valve for filling a cistern, with a float, which is connected to an axially movable valve body, which cooperates with a valve seat of an inlet nozzle of a nozzle body to be connected to a supply line.
- a float valve of this type has become known from the applicant's DE 31 53 688 C2.
- This float valve serves to control the water inlet into a toilet cistern and has a valve body which is moved by means of a coupling gear and is held in the closed position.
- the reduction ratio of this coupling gear is small at the beginning of the closing movement and much larger at the end of the same. This change in the transmission ratio during the closing movement results in increased security against undesired opening of the valve in the event of a pressure increase or pressure change in the supply line.
- the buoyancy of the float is dimensioned such that the valve can also be connected to a supply line which has a water pressure which is above the average.
- the buoyancy of the float must therefore be greater than would be optimal with a supply line with average or lower water pressure.
- the usual buoyancy of the float is in the range of about 1.6 to 2.0 N.
- the buoyancy of a float is essentially determined by its volume. A high buoyancy force can essentially only be achieved by a correspondingly high volume of the float.
- the water pressure is very different and generally comparatively low.
- the connection pressure can be, for example, only 1 bar.
- the floats previously used at such a comparatively low pressure thus have an unnecessarily high buoyancy and accordingly an unnecessarily large volume.
- the smallest possible float would be desirable for reasons of space. In principle, such a float could be replaced. However, this is comparatively complex and accordingly different floats or float valves would have to be kept in stock.
- the invention has for its object to provide a float valve of the type mentioned, which is more compact and small-volume, yet reliable.
- the object is achieved according to claim 1 in a generic float valve by means of changing the nozzle cross section to be sealed. Since the cross-section of the nozzle to be sealed can be changed in the float valve according to the invention, this cross-section of the nozzle can be adapted to the water supply pressure. With unusually large water connection pressure, this nozzle cross-section is reduced and, if the water connection pressure is very low, increased accordingly. This allows the force acting on the valve body when the valve is closed to be optimally adapted to the closing force of the valve. At the same time, the filling capacity is optimally adjusted. With a comparatively low water connection pressure, the nozzle cross-section is increased accordingly and the filling capacity is increased accordingly. The float therefore does not have to be oversized from the outset, since an unusually large force on the valve body when the valve is closed can be avoided in any case by adapting the nozzle cross section.
- a particularly precise setting of the optimal cross-section of the nozzle is obtained if it can be changed continuously. According to a further development, this is achieved very inexpensively and reliably by an elastically deformable body. According to a development of the invention, this body is tubular and can be deformed by means of radially extending adjusting means.
- the nozzle cross-section to be sealed was changed by means of a rotating or swiveling disc with several through openings. By turning the disc, the passage opening selected as the valve seat that corresponds to the optimal nozzle cross-section.
- the suitable nozzle cross-section can thus be set very easily and quickly.
- FIG. 1 shows a longitudinal section through a float valve according to the invention, individual parts being omitted for graphic reasons,
- FIG. 2a shows a section through part of the float valve according to FIG. 1, the valve being open
- Figure 2b is a partially sectioned view in the direction of the arrow Ilb-IIb of Figure 2a, and
- FIG. 3a shows a section through part of the float valve according to a variant, the valve being open here too, and FIG. 3b shows a view in the direction of the arrow Illb-Illb in FIG. 3a.
- the float valve 1 shown in FIG. 1 has a valve housing 22 to which a connection nipple 2 is detachably fastened by means of a union nut 3.
- a nozzle body 7 with a through bore 4 is clamped together with a clamping ring 6 between this nipple 2 and the valve housing 22.
- the nozzle body 7 is sealed off from the nipple 2 by means of a sealing element 5.
- the nozzle body 7 has a valve seat 9 which is arranged approximately in the middle of a deflecting screen 7b.
- This valve seat 9 works together with a valve body 16 which has a rubber seal 16a.
- the valve body 16 is pressed against the valve seat 9 with the rubber seal 16a. The The valve is thus closed and no flushing water can enter an annular space 10 of the valve housing 22 through the bore 4 of the nozzle body 7.
- the contact pressure of the valve body 16 is exerted with a float 19 which is guided in a vertically displaceable manner on the outlet pipe 21 and which is connected to a lever 11 via a linkage 20 which is only indicated and is preferably designed as a coupling gear.
- the linkage 20 and the float 19 can be designed according to DE 31 53 688 C2 mentioned above.
- the float 19 is located in the cistern and accordingly experiences a buoyancy. This buoyancy force is transmitted to the valve body 16 via the linkage 20 and the lever 11.
- a tubular and rubber-elastic membrane 8 is inserted into the bore 4 of the nozzle body 7 and its end face 8c is essentially flush with the valve seat 9.
- the membrane 8 has a radial flange 8d at its end for fastening it in the nozzle body 7.
- the bore 4 is widened by a correspondingly larger bore 13.
- the membrane 8 is slightly elastically deformed by the grub screw 15 such that the nozzle cross section A according to FIG.
- FIG. 2b is out of round and also smaller than in the case of the undeformed membrane 8.
- the grub screw is shown in FIG. 2a 15 is moved upward in the threaded bore 14, the deformation of the membrane is gradually lifted until the membrane 8 is fully in the bore 13 and the nozzle cross section A is circular and thus larger than shown in Figure 2b.
- the grub screw 15 is further radial in FIGS. 2a and 2b moved inwards, the nozzle cross-section A is further reduced.
- the nozzle cross section A can thus be changed continuously within certain limits.
- the force which acts on the valve body 16 due to the water pressure in the nozzle body 7 is changed accordingly.
- the force on the nozzle body 16 can be continuously reduced by appropriately screwing in the grub screw 15 and thus reducing the nozzle cross-section A.
- the grub screw 18 is unscrewed and according to the. Nozzle cross section A enlarged.
- FIG. 3b shows the position of the nozzle disk 17, in which the nozzle passage 17a with the largest nozzle cross section A is effective. In this version, too, the nozzle cross section can be changed. However, the change is not stepless, but rather step-like in accordance with the gradations of the nozzle passages 17a.
- the membrane 8 and the nozzle disk 17 are only examples of means with which the nozzle cross section can be changed. It is clear to the person skilled in the art that other means are also conceivable with which the nozzle cross section can be changed in steps or continuously.
- the nozzle cross-section A is set during assembly. As a rule, this nozzle cross-section A is fixed after installation and is only changed again in exceptional cases, but this is in principle possible at any time.
- the adjustment of the nozzle cross-section A can be checked after installation by rinsing and filling the cistern accordingly. In a simple way, the optimal filling performance of, for example, 200 cm ⁇ / sec. be checked.
- a major advantage of the float valve according to the invention is also seen in the fact that the change can be achieved with comparatively simple, inexpensive parts. The mode of operation compared to the known float valve does not have to be changed. Since the nozzle cross section can be optimally adapted to the connection pressure, a float 19 is provided, which has a comparatively small volume and accordingly has a comparatively low buoyancy.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Float Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH15199 | 1999-01-28 | ||
CH15199 | 1999-01-28 | ||
PCT/CH1999/000564 WO2000045076A1 (en) | 1999-01-28 | 1999-11-25 | Float valve for filling a flush tank |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1066481A1 true EP1066481A1 (en) | 2001-01-10 |
Family
ID=4180417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99973655A Withdrawn EP1066481A1 (en) | 1999-01-28 | 1999-11-25 | Float valve for filling a flush tank |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1066481A1 (en) |
JP (1) | JP2002535584A (en) |
KR (1) | KR20010042170A (en) |
CN (1) | CN1120317C (en) |
AT (1) | AT4076U1 (en) |
AU (1) | AU758581B2 (en) |
DE (1) | DE29918936U1 (en) |
WO (1) | WO2000045076A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102466045B (en) * | 2010-11-11 | 2013-11-06 | 李飞宇 | Closestool water inlet valve and control method thereof |
DE102010062195A1 (en) * | 2010-11-30 | 2012-05-31 | Krones Aktiengesellschaft | Control valve for pressure reduction |
DE202014102658U1 (en) * | 2014-06-06 | 2014-06-23 | Bürkert Werke GmbH | diaphragm valve |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1887235A (en) * | 1930-06-11 | 1932-11-08 | Wolverine Brass Works | Valve mechanism |
GB662896A (en) * | 1948-10-01 | 1951-12-12 | Willy Homann | Improvements in or relating to gas taps |
GB782904A (en) * | 1954-08-23 | 1957-09-18 | Leonard Victor Sherwood | A ball valve device |
CH649336A5 (en) | 1980-10-27 | 1985-05-15 | Geberit Ag | FLOAT VALVE FOR CONTROLLING THE WATER INLET IN A TOILET CLEANER. |
US5197708A (en) * | 1992-08-11 | 1993-03-30 | Flow-Rite Controls, Ltd. | Tubing pinch valve device |
-
1999
- 1999-10-28 DE DE29918936U patent/DE29918936U1/en not_active Expired - Lifetime
- 1999-11-25 CN CN99804547A patent/CN1120317C/en not_active Expired - Fee Related
- 1999-11-25 EP EP99973655A patent/EP1066481A1/en not_active Withdrawn
- 1999-11-25 WO PCT/CH1999/000564 patent/WO2000045076A1/en not_active Application Discontinuation
- 1999-11-25 KR KR1020007010623A patent/KR20010042170A/en not_active Application Discontinuation
- 1999-11-25 AT AT0081499U patent/AT4076U1/en not_active IP Right Cessation
- 1999-11-25 JP JP2000596295A patent/JP2002535584A/en active Pending
- 1999-11-25 AU AU11466/00A patent/AU758581B2/en not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO0045076A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1295655A (en) | 2001-05-16 |
KR20010042170A (en) | 2001-05-25 |
CN1120317C (en) | 2003-09-03 |
AU1146600A (en) | 2000-08-18 |
AT4076U1 (en) | 2001-01-25 |
WO2000045076A1 (en) | 2000-08-03 |
AU758581B2 (en) | 2003-03-27 |
JP2002535584A (en) | 2002-10-22 |
DE29918936U1 (en) | 2000-01-13 |
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Legal Events
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