GB2249969A - Slurry stirrer - Google Patents

Slurry stirrer Download PDF

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Publication number
GB2249969A
GB2249969A GB9122924A GB9122924A GB2249969A GB 2249969 A GB2249969 A GB 2249969A GB 9122924 A GB9122924 A GB 9122924A GB 9122924 A GB9122924 A GB 9122924A GB 2249969 A GB2249969 A GB 2249969A
Authority
GB
United Kingdom
Prior art keywords
slurry
column
air
stirrer according
rotating
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Withdrawn
Application number
GB9122924A
Other versions
GB9122924D0 (en
Inventor
Anthony Macgregor Clayton
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.)
CLARRATTS Ltd
Original Assignee
CLARRATTS Ltd
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
Priority claimed from GB909024991A external-priority patent/GB9024991D0/en
Application filed by CLARRATTS Ltd filed Critical CLARRATTS Ltd
Priority to GB9122924A priority Critical patent/GB2249969A/en
Publication of GB9122924D0 publication Critical patent/GB9122924D0/en
Publication of GB2249969A publication Critical patent/GB2249969A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C3/00—Treating manure; Manuring
    • A01C3/02—Storage places for manure, e.g. cisterns for liquid manure; Installations for fermenting manure
    • A01C3/026—Storage places for manure, e.g. cisterns for liquid manure; Installations for fermenting manure with mixing or agitating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
    • B01F23/23231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit
    • B01F23/232311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit the conduits being vertical draft pipes with a lower intake end and an upper exit end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32—Driving arrangements
    • B01F35/32005—Type of drive
    • B01F35/3203—Gas driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32—Driving arrangements
    • B01F35/32005—Type of drive
    • B01F35/32015—Flow driven

Abstract

A slurry stirrer e.g. for aerating agricultural wastes comprises an air-lift pump having a lifting column 5 and means the column, the base of the column having at least one 6 in the column for rotating a mixture of slurry and air rising in means 9 to allow air to be bubbled into the slurry in the column. opening 8 through which slurry can enter the column and to cause the slurry in the column to be lifted. The rotating means may comprise a stationary helical vane. A method of treating a slurry comprises passing it through an air-lift pump while simultaneously rotating the resulting mixture of air and slurry, whereby the slurry is agitated and aerated. <IMAGE>

Description

TITLE: SLURRY STIRRER DESCRIPTION The invention relates to slurry stirrers, and more particularly to stirrers intended for use with farm wastes such as pig or cow slurry.
It is known to provide slurry stirrers which consist of a device such as a paddle which is used to agitate the slurry so that the solids are maintained in suspension, but such devices tend to have only a localised effect in the slurry tank. It is an object of the invention to provide a slurry stirrer which has few, if any, moving parts and is thus simple and which is effective in operating over a substantial area of the slurry tank while being compact in size.
According to the invention a slurry stirrer comprises an air-lift pump having a lifting column and means in the column for rotating a mixture of slurry and air rising in the column.
The rotating means may comprise one or more guide vanes in the column and preferably the rotating means is a helical vane which is stationary with respect of the column and which may extend completely across the column.
The helical vane may extend throughout substantially the whole height of the column.
The column may be circular in cross-section and may be made of a material such as plastics or metal. The base of the column-will be provided with at least one opening through which slurry can enter the column and means will be provided to allow air to be bubbled into the slurry in the column to cause the slurry in the column to be lifted.
Air may be supplied from any suitable source such as a compressor, which is preferably of the kind arranged to supply air at low pressure and high volume.
From another aspect the invention is a method of treating a slurry comprising passing it through an air lift pump while simultaneously rotating the resulting mixture of air and slurry, whereby the slurry is agitated and aerated.
The invention is diagrammatically illustrated, by way of example, in the accompanying drawing.
In the drawing a slurry stirrer for agricultural use comprises a tubular column 5, which can if desired be made in short sections arranged end to end, and which is open at its top. At its base the column is supported on a stand 7 and is formed with openings 8 in its side wall through which slurry 2 in the tank 1 can enter the column. An air pipe 9 opens into the foot of the column.
Air is supplied to the pipe 9 through a base 4 connected to a suitable source such as a vane pump compressor. The interior of the column is filled by a helical guide vane 6 which extends throughout the height of the column and which divides the interior of the column into two.
The sections of the column can be locked together by means of vertical tie-rods 12 extending between the stand 7 and a clamp 11 surrounding, and fixed to, the uppermost section of the column.
In use the stirrer will be stood in the slurry tank 1 with the top 13 of the columns beneath the surface level 3 of the slurry 2 in the tank. Slurry will enter the column through the openings 8. On introducing air, in bubbles, into the foot of the column via holes 10 in the pipe 9, the slurry will be lifted and agitated as it is rotated upwards through the column until it is expelled from the top of the column. This process will draw more slurry into the column for treatment. The solids in the slurry will thus be kept in suspension and the slurry will simultaneously be aerated.
The invention thus provides a simple and effective slurry stirrer for agricultural and other solidscontaining liquids, and which is readily adaptable to differing slurry tanks.

Claims (11)

1. A slurry stirrer comprising an air-lift pump having a lifting column and means in the column for rotating a mixture of slurry and air rising in the column, the base of the column having at least one opening through which slurry can enter the column and means to allow air to be bubbled into the slurry in column to cause the slurry in the column to be lifted.
2. A slurry stirrer according to claim 1, wherein the rotating means comprises at least one or more guide vane in the column.
3. A slurry stirrer according to claim 2, wherein the rotating means is a helical vane which is stationary with respect to the column.
4. A slurry stirrer according to claim 3, wherein the helical vane extends completely across the column.
5. A slurry stirrer according to claim 3 or claim 4 wherein the helical vane extends throughout substantially the whole height of the column.
6. A slurry stirrer according to any preceding claim, wherein the column is circular in cross-section.
7. A slurry stirrer according to claim 6 wherein the column is sectional.
8. A slurry stirrer according to claim 6 or claim 7, wherein the column is made of plastics of metal.
9. A slurry stirrer substantially as hereinbefore described with reference to, and as illustrated in, the accompanying drawings.
10. A method of treating a slurry comprising passing it through an air-lift pump while simultaneously rotating the resulting mixture of air and slurry, whereby the slurry is agitated and aerated.
11. A method of treating a slurry, substantially as hereinbefore described.
GB9122924A 1990-11-16 1991-10-29 Slurry stirrer Withdrawn GB2249969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9122924A GB2249969A (en) 1990-11-16 1991-10-29 Slurry stirrer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909024991A GB9024991D0 (en) 1990-11-16 1990-11-16 Slurry stirrer
GB9122924A GB2249969A (en) 1990-11-16 1991-10-29 Slurry stirrer

Publications (2)

Publication Number Publication Date
GB9122924D0 GB9122924D0 (en) 1991-12-11
GB2249969A true GB2249969A (en) 1992-05-27

Family

ID=26297969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9122924A Withdrawn GB2249969A (en) 1990-11-16 1991-10-29 Slurry stirrer

Country Status (1)

Country Link
GB (1) GB2249969A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19751884A1 (en) * 1997-11-22 1999-06-02 Jianming Dr Ing Shang Liquid mixer for use in the drinks industry
US6164813A (en) * 1999-02-05 2000-12-26 Wang; Chiang-Ming Static fluid mixing device with helically twisted elements
GB2354958A (en) * 1999-10-04 2001-04-11 Holloway Walter Agricultural slurry aerator with compressed air discharged from vertical pipes
EP1358928A1 (en) * 2001-02-05 2003-11-05 OHR Co., Ltd Supporting structure and supporting bracket of single tube drift generator receiving centrifugal force of internal fluid
EP1679112A1 (en) * 2003-10-29 2006-07-12 Anemos Company Ltd. Air diffusing device
US7559537B1 (en) * 2007-10-23 2009-07-14 Green Energy Live, Inc. Direct steam injection heater with integrated reactor and boiler
DE102010023631B4 (en) 2010-06-14 2019-02-21 Aqseptence Group Gmbh Static mixer and mixing method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1026384A (en) * 1962-06-05 1966-04-20 Activated Sludge Ltd Improvements in or relating to aerators
WO1979000895A1 (en) * 1978-04-06 1979-11-15 W Webb Water treating device
GB2030882A (en) * 1978-09-28 1980-04-16 Primus D Static mixing device
EP0214860A2 (en) * 1985-09-06 1987-03-18 Hoel Rasmusen International Inc. Acceleration valve and motionless mixer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1026384A (en) * 1962-06-05 1966-04-20 Activated Sludge Ltd Improvements in or relating to aerators
WO1979000895A1 (en) * 1978-04-06 1979-11-15 W Webb Water treating device
GB2030882A (en) * 1978-09-28 1980-04-16 Primus D Static mixing device
EP0214860A2 (en) * 1985-09-06 1987-03-18 Hoel Rasmusen International Inc. Acceleration valve and motionless mixer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19751884A1 (en) * 1997-11-22 1999-06-02 Jianming Dr Ing Shang Liquid mixer for use in the drinks industry
US6164813A (en) * 1999-02-05 2000-12-26 Wang; Chiang-Ming Static fluid mixing device with helically twisted elements
GB2354958A (en) * 1999-10-04 2001-04-11 Holloway Walter Agricultural slurry aerator with compressed air discharged from vertical pipes
EP1358928A1 (en) * 2001-02-05 2003-11-05 OHR Co., Ltd Supporting structure and supporting bracket of single tube drift generator receiving centrifugal force of internal fluid
EP1358928A4 (en) * 2001-02-05 2007-01-10 Ohr Co Ltd Supporting structure and supporting bracket of single tube drift generator receiving centrifugal force of internal fluid
EP1679112A1 (en) * 2003-10-29 2006-07-12 Anemos Company Ltd. Air diffusing device
EP1679112A4 (en) * 2003-10-29 2009-05-13 Anemos Company Ltd Air diffusing device
EP2095869A3 (en) * 2003-10-29 2009-11-18 Anemos Company Ltd. Air diffusing device
US7559537B1 (en) * 2007-10-23 2009-07-14 Green Energy Live, Inc. Direct steam injection heater with integrated reactor and boiler
DE102010023631B4 (en) 2010-06-14 2019-02-21 Aqseptence Group Gmbh Static mixer and mixing method

Also Published As

Publication number Publication date
GB9122924D0 (en) 1991-12-11

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)