US3782697A - Apparatus for dissolving and admixing components having a highly different specific gravity in liquid to highly viscous media - Google Patents

Apparatus for dissolving and admixing components having a highly different specific gravity in liquid to highly viscous media Download PDF

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Publication number
US3782697A
US3782697A US00162452A US3782697DA US3782697A US 3782697 A US3782697 A US 3782697A US 00162452 A US00162452 A US 00162452A US 3782697D A US3782697D A US 3782697DA US 3782697 A US3782697 A US 3782697A
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United States
Prior art keywords
blade wheel
liquid
conduit
specific gravity
guide ring
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
Application number
US00162452A
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English (en)
Inventor
R Karg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KARG GmbH
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KARG GmbH
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Filing date
Publication date
Priority claimed from DE19702035485 external-priority patent/DE2035485C3/de
Application filed by KARG GmbH filed Critical KARG GmbH
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Publication of US3782697A publication Critical patent/US3782697A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/15—Stirrers with tubes for guiding the material

Definitions

  • the invention provides an apparatus for dissolving and admixing components having a highly different specific gravity in liquid to highly viscous media.
  • a pumping member consists of a blade wheel, which is surrounded by a guide ring and creates in the liquid medium a suction zone, which contains a discharge opening of a conduit for supplying the substances having a lower specific gravity.
  • Known dissolving and mixing apparatus comprise a driven blade wheel, which is surrounded by a guide ring and which enforces a flow bf the media.
  • Such apparatus may be used to subject liquids differing in viscosity and liquids together with solids, to homogenizing, emulsifying, dispersing and the like operations.
  • These known apparatus have the disadvantage that it is impossible or very difficult to incorporate powders having very low specific gravities, such as soot, milk powder, aerosols or cocoa powder into a liquid component unless the mixing apparatus is placed on such a high level that the pumping member sucks air in the form of a vortexlike funnel and said air entrains the powder downwardly into the mixing head.
  • That mixing operation has the disadvantage that air is also drawn into the mixing head and is finely dispersed in the mixed materials although this is not desired in many cases.
  • the powders tent to clog so that a uniform disperson cannot be accomplished. Similar remarks will be applicable if liquid media having highly different specific gravities should be processed to form a homogeneous mixture.
  • Another known mixing apparatus comprises a pumping member in the form of a blade wheel which is surrounded by a guide ring and also comprises supply conduits which extend into the suction zone of said pumping member to supply air which is to be admixed to the mixture. This is accomplished in that the air supply conduits extend into the region in which a suction cavity is formed above the blade wheels. The discharge openings of these air supply conduits are disposed outside the guide ring which surrounds the blade wheel.
  • the conduit for supplying powders to be dissolved is provided at that end which is remote from the blade wheel with a feeder or the like for the powders and the discharge opening of said conduit is disposed within the guide ring and as close as possible to the revolving parts of the blade wheel.
  • the substances having a low specific gravity can be sucked from an external location directly into the range of the mixing head so that they will be satisfactorily dissolved and/or admixed without a risk of an ingress of air. It has also been found that a clogging of powders will be entirely avoided in the operation of the novel apparatus, which is particularly desirable and suitable for the processing of powders.
  • the substances having a relatively low specific gravity, particularly the powders are sucked by the strong suction produced by the revolving blade wheel and together with the resulting liquid jet are uniformly dissolved or dispersed in the liquid fluid.
  • the suction conduit incorporates an additional handling device having an action similar to that of an ejector pump. Such an arrangement will result in an increased suction particularly in powders.
  • a mixing device is provided with a tube which carries the guide n'ng surrounding the blade wheel and said tube itself serves to suck or handle the substances which are dry or are wetted by or admixed to the entraining liquid. That design eliminates the need for a separate suction pipe.
  • FIG. 1 is a side elevation showing a dissolving and mixing apparatus which comprises a rotating blade wheel that is surrounded by a guide ring, and a pipe which is disposed beside the means for driving the blade wheel and serves to suck powders.
  • FIG. 2 shows an embodiment which is similar to that of FIG. 1 but in which the tube which carries the guide ring surrounding the blade wheel constitutes also a suction tube for the powders.
  • a blade wheel 2 is surrounded by a guide ring 1 and suspended to be immersed in a liquid medium 3, which has been filled, e.g., into a container, not shown.
  • the blade wheel 2 is operated by an electric motor 4 by means of a shaft which extends within a tube 5 which carries the guide ring 1.
  • the carrying tube 5 is carried by the wall of the container or by other means.
  • a suction pipe 6 extends beside the carrying tube 5 and is held by a flange 7, which is secured to the carrying tube 5 or the electric motor 4.
  • the suction pipe 6 is provided with a shut-off valve 8 adjacent to the flange 7.
  • the suction pipe 6 carries a feed hopper 9 for powders to be dissolved in or admixed to the liquid medium 3.
  • the liquid 3 is sucked in the direction of the arrow 10 through a pre-arranged guide ring 11 and then through the guide ring 1 and is thereafter ejected with a high kinetic energy from the guide ring 1 or under the action of a second blade wheel from a tubular extension 13 so that a circulating motion and mixing operation are induced in the container.
  • the shut-off valve 8 is then opened, the powder is sucked from the hopper 9 through the suction pipe 6 into the range of the guide ring 1 and by the revolving blade wheel 2 is entrained in the jet of the liquid 3 which is ejected from the mixing head.
  • an additional handling device 14 acting like an ejector pump may be provided in the suction pipe 6. That device is indicated in dotted lines.
  • the powder to be dissolved or admixed is supplied from the hopper 9 through the suction pipe 6 to an injector 14, which is supplied through a port 15 with liquid from a high-pressure pump.
  • the liquid sucks the powder and in the injector l4 entirely or partly wets the powder.
  • the entraining liquid supplied through the port 15 then flows through the tube portion 6a into the interior of the carrying tube and by the suction of the blade wheel 2 and the discharge pressure of the injector 14 is introduced in the direction of the arrow 16 into the guide ring 1 and as in the embodiment shown in FIG. 1 is ejected from the guide ring 1 or its extension 13.
  • the medium 3 enters in the direction of the arrow 10 the pre-arranged guide ring 11, which is connected by webs 11a to the carrying tube 5.
  • the entraining liquid which enters the injector 14 through the port 15 may be taken in certain cases directly from the medium 3 or may be taken from an additional liquid source so that solutions may be diluted or concentrated.
  • the funnel 9 may also be preceded by a shut-off valve, whoch is not shown.
  • the invention provides a most desirable apparatus for incorporating powdered substances having a low specific gravity into fluids having a liquid to highly viscous consistency.
  • the suction conduit may be used to introduce liquids which have a much lower specific gravity than the liquid initially contained in the container, although the greatest advantage is afforded by the invention in the processing of powders together with liquid media.
  • Apparatus for dissolving and admixing components having a highly different specific gravity in liquid to highly viscous media comprising a pumping member which is adapted to be immersed in a liquid medium and which is composed of a blade wheel which is surrounded by a guide ring and serves to create a suction zone in said liquid medium, a conduit for supplying substanceswhich have a lower specific gravity than said liquid medium, said conduit having a discharge opening disposed in said suction zone, said conduit being provided at its end portion opposite to said blade wheel with means for feeding said substances thereto, means incorporated in said conduit for force-feeding such substances to the suction zone so that such substances enter the pumping member in reaction to the suction of the blade wheel and the discharge pressure of said feeding means, and said discharge opening at the other end of said conduit being disposed within said guide ring and close to said blade wheel.
  • said force-feeding means comprises an injector, which is fed by a high-pressure pump and supplies the blade wheel with a mixture of the entraining liquid and the powders.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
US00162452A 1970-07-17 1971-07-14 Apparatus for dissolving and admixing components having a highly different specific gravity in liquid to highly viscous media Expired - Lifetime US3782697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702035485 DE2035485C3 (de) 1970-07-17 Vorrichtung zum Lösen und Mischen

Publications (1)

Publication Number Publication Date
US3782697A true US3782697A (en) 1974-01-01

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ID=5777050

Family Applications (1)

Application Number Title Priority Date Filing Date
US00162452A Expired - Lifetime US3782697A (en) 1970-07-17 1971-07-14 Apparatus for dissolving and admixing components having a highly different specific gravity in liquid to highly viscous media

Country Status (4)

Country Link
US (1) US3782697A (de)
BE (1) BE770098A (de)
CH (1) CH528293A (de)
FR (1) FR2101743A5 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289733A (en) * 1974-12-17 1981-09-15 Fuji Photo Film Co., Ltd. Apparatus for making silver halide grains
US4966690A (en) * 1987-10-30 1990-10-30 Gardiner Jack C Chlorine induction apparatus for treatment of wastewater
US5253812A (en) * 1992-10-16 1993-10-19 Wesley Staples Tank cleaning method and apparatus
US5526989A (en) * 1994-08-08 1996-06-18 Staples; Wesley A. Method of operation of positive guidance system for a tank-cleaning device
US6050720A (en) * 1997-09-04 2000-04-18 Fuji Photo Film Co., Ltd. Stirring apparatus with coaxial stirring impellers
US6169059B1 (en) * 1998-11-19 2001-01-02 Superior Graphite Co. High-temperature, water-based lubricant and process for making the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205089A (en) * 1938-07-05 1940-06-18 Union Oil Co Apparatus for mixing fluids
US2704206A (en) * 1954-01-21 1955-03-15 Crook Isadore Mixing and dispensing device
US2801083A (en) * 1953-01-07 1957-07-30 Leslie L Balassa Mixing device
US2878969A (en) * 1955-12-19 1959-03-24 Donald G Griswold Batch feed apparatus
US3339897A (en) * 1965-05-28 1967-09-05 Jr Philip E Davis Continuous mixing device for drilling fluids

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205089A (en) * 1938-07-05 1940-06-18 Union Oil Co Apparatus for mixing fluids
US2801083A (en) * 1953-01-07 1957-07-30 Leslie L Balassa Mixing device
US2704206A (en) * 1954-01-21 1955-03-15 Crook Isadore Mixing and dispensing device
US2878969A (en) * 1955-12-19 1959-03-24 Donald G Griswold Batch feed apparatus
US3339897A (en) * 1965-05-28 1967-09-05 Jr Philip E Davis Continuous mixing device for drilling fluids

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289733A (en) * 1974-12-17 1981-09-15 Fuji Photo Film Co., Ltd. Apparatus for making silver halide grains
US4966690A (en) * 1987-10-30 1990-10-30 Gardiner Jack C Chlorine induction apparatus for treatment of wastewater
US5253812A (en) * 1992-10-16 1993-10-19 Wesley Staples Tank cleaning method and apparatus
US5526989A (en) * 1994-08-08 1996-06-18 Staples; Wesley A. Method of operation of positive guidance system for a tank-cleaning device
US6050720A (en) * 1997-09-04 2000-04-18 Fuji Photo Film Co., Ltd. Stirring apparatus with coaxial stirring impellers
US6169059B1 (en) * 1998-11-19 2001-01-02 Superior Graphite Co. High-temperature, water-based lubricant and process for making the same
US6350722B2 (en) * 1998-11-19 2002-02-26 Superior Graphite Company High-temperature, water-based lubricant and process for making the same

Also Published As

Publication number Publication date
BE770098A (fr) 1971-12-01
DE2035485A1 (de) 1972-01-20
DE2035485B2 (de) 1976-05-26
CH528293A (de) 1972-09-30
FR2101743A5 (de) 1972-03-31

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