Fluid handling – Systems – Multiple inlet with single outlet
Patent
1987-07-02
1988-12-06
Nilson, Robert G.
Fluid handling
Systems
Multiple inlet with single outlet
210169, 251146, 251209, G05D 1103
Patent
active
047890037
DESCRIPTION:
BRIEF SUMMARY
This invention relates to apparatus for selectively metering chemicals into fluid systems. More particularly although not exclusively it is intended for use with swimming pools or agricultural irrigation systems.
In order to control the growth of algae and other disease causing organisms in swinning pools or water slides etc. it is necessary to maintain a minimum concentration of anticeptic chemicals such as chlorine in the water. These chemicals are normally available in the forms of powders, slow dissolving pellets or concentrated liquids. While the use of liquids is becoming more prevalent due to ease of mixing and the absence of any residue (which results from pelletized or powdered chlorine) this has required the installation of expensive electrically powered pumps and metering equipment if the amount of chemical in the water is to be conveniently maintained at the required level.
Similarly in many irrigation systems it is often necessary to accurately dispense relatively small volumes of chemical additives into the water supply and until the present invention has also required the installation of expensive externally powered metering equipment.
With the object of ameliorating this disadvantage the invention according to one aspect discloses apparatus for selectively metering liquid chemical additives into swimming pools or irrigation water systems without the requirement of any additional external power.
Preferably such apparatus comprises conduit means adapted at one end for insertion into a supply of said liquid chemical, a clamp means for connecting the other end of said conduit to the intake line of a water pump or the like and a restricting means for selectively metering the flow of said liquid chemical through said conduit.
Two currently preferred embodiments of this invention will now be described with reference to the attached drawings in which:
FIG. 1 shows a schematic view in partial crosssection of one form of liquid chlorine dispensing apparatus according to this invention,
FIG. 2 is an exploded view of a second form of liquid chemical dispensing apparatus,
FIG. 3 is a plan view of the assembled dispensing apparatus of FIG. 2,
FIG. 4 is a sectional view of part of the apparatus of FIG. 2, and
FIG. 5 is a cross-sectional view along the lines IV--IV of FIG. 3.
Referring first to FIG. 1 the apparatus basically comprises a pipe clamp 1 and plastic tubing 2 which connects this clamp to an intake housing 3 for insertion into a supply of liquid chlorine 3A. A threaded cover 4 is also fitted around the tube. This cover is designed as a closure for liquid chlorine containers 4A of the size sold for domestic or commercial use so that after their initial opening and insertion of the tube these receptacles can again be sealed against accidental spillage or the ingress of foreign matter.
The intake for the apparatus consists of a hollow bell shaped casing with a nipple 6 adapted for insertion into the end of the plastic tube 2. A screen 6A is located up from the rim 7. This rim may have notches 7A cut through it to ensure a free flow of liquid up through the screen when it is resting on the bottom of the chlorine container. Weights may also be inserted within this casing to overcome any natural buoyancy or curvature of the tube and ensure that the intake screen sits properly on the bottom of the container.
The clamp 1 at the other end of the tube basically comprises a set of saddle members 8 and 9 which are adapted to embrace the vacuum or intake pipe 9A of a swimming pool pump (not shown). Bolts 10 extend through flanges 11 on each side of these saddle members so that they can be tightened securely around this pipe. The tube 2 leads into the upper saddle member 8 through a connector fitting 12 of any suitable design so that the liquid chlorine can flow from the tube through an orifice 13 in this member. A non-return valve 13A is also located within the fitting 12 to prevent any reversal of flow back through the tube.
Prior to attaching the clamp 1 in place a hole 12A of approximately 6 to 9 mm diamet
REFERENCES:
patent: 2424328 (1947-07-01), Pars
patent: 3180580 (1965-04-01), Schedel
patent: 3347267 (1967-10-01), Inman
patent: 3417780 (1968-12-01), Lienard
patent: 3822017 (1974-07-01), Rast
patent: 4224154 (1980-09-01), Steininger
patent: 4363728 (1982-12-01), Guglielmi
Australian Patent Abstract #66,826/81; C. R. Fletcher et al; Feb. 1980.
LandOfFree
Water treatment apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water treatment apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water treatment apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1489075