Chemical apparatus and process disinfecting – deodorizing – preser – Physical type apparatus – Means separating or dissolving a material constituent
Patent
1994-03-25
1995-12-05
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Physical type apparatus
Means separating or dissolving a material constituent
68 1218, 68 17R, 222160, 2221457, 2221456, 422261, D06F 3500, D06F 3902
Patent
active
054726743
DESCRIPTION:
BRIEF SUMMARY
This application is related to applications Ser. No. 08/182,199, filed Mar. 28, 1994, which issued on Jan. 17, as U.S. Pat. No. 5,383,117, for DEVICE FOR HOLDING A POWDER CONTAINER; and Ser. No. 08/185,877, filed Mar. 28, 1994, for DEVICES AND METHOD FOR METERING POWDER DIRECTLY OUT OF THE SALE CONTAINERS.
BACKGROUND
1.0 Field of the Invention
This invention relates generally to conventional wet vacuum cleaners consisting of a tub-like lower part and--sealingly mounted thereon--an upper part with an integrated suction blower for generating a reduced pressure in a stock liquor tank and more particularly to such a cleaner in which the lower part or a portion of the stock liquor tank includes a suction line leading from the stock liquor tank into a powder container.
2.0 Discussion of Related Art
It is known that a stock liquor tank containing a detergent solution can be provided for supplying institutional washing or dishwashing machines with the detergent solution. The detergent solution is pumped as required from the stock liquor tank into the washing or dishwashing machines. To prepare the stock liquor from a powder or powder-form detergent, a metering unit is associated with the stock liquor tank. The powder is poured into the metering unit from a powder container or the powder container as a whole is introduced into the metering unit and slit open. Powder-form detergent is delivered in batches from the metering unit into a dispensing trough in which it mixes with inflowing water to form the stock liquor forming the detergent solution for the washing or dishwashing machine. The stock liquor is then directly introduced into the stock liquor tank. The detergent solution is removed from the stock liquor tank in accordance with the requirements of the particular washing or dishwashing process.
Filling the metering unit with the powder-form detergent is not without problems. It is frequently accompanied by dust emission which is unpleasant and a health hazard to the machine operator, particularly in the case of the strongly alkaline detergent powders typically used for dishwashing. Unwanted dust emission can occur both during the introduction of powder containers into the metering unit and during the pouring or scooping of powder from the container into the metering unit.
The holding capacity of known metering units for supplying known stock liquor tanks with powder-form detergent is typically 5 kg so that only 5 kg powder containers can be accommodated in the metering units. In addition, the powder is normally removed from the metering units and the powder/water mixture delivered to the stock liquor tank under the effect of gravity. Accordingly, the metering units are normally arranged above a stock liquor tank. This prevents the holding capacity of the metering units from being increased as required unless holders of complicated construction are provided for the metering unit.
Conventional stock liquor tanks are in the form of tanks per se or canisters and comprise a feed line for the stock liquor prepared by means of a metering unit and an outlet line for delivering the stock liquor from the stock liquor tank to institutional dishwashing or washing machines.
3.0 Summary of the Invention
The problem addressed by the present invention is to enable a stock liquor to be directly prepared from the powder container holding powder-form detergent without any dust emission and to keep the stock liquor ready for supplying institutional dishwashing or washing machines.
In an apparatus of the type mentioned previously, the solution provided by the invention is characterized in that the opening of the suction line on the inside of the stock liquor tank is arranged at a distance from the point where the suction line enters the lower part, in that a fresh water line opens into the stock liquor tank, its water outlet opening being directed onto a stream of powder to be drawn through the suction line, and in that the stock liquor tank comprises another stock liquor line operatively connected to a pump and leading out fro
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Holz Peter
Rings Friedel
Carpenter Robert
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Szoke Ernest G.
Warden Robert J.
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