GB2066682A - Agitating sewage - Google Patents

Agitating sewage Download PDF

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Publication number
GB2066682A
GB2066682A GB8009705A GB8009705A GB2066682A GB 2066682 A GB2066682 A GB 2066682A GB 8009705 A GB8009705 A GB 8009705A GB 8009705 A GB8009705 A GB 8009705A GB 2066682 A GB2066682 A GB 2066682A
Authority
GB
United Kingdom
Prior art keywords
pinion
shaft
agitating
tube
driving sleeve
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.)
Granted
Application number
GB8009705A
Other versions
GB2066682B (en
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Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of GB2066682A publication Critical patent/GB2066682A/en
Application granted granted Critical
Publication of GB2066682B publication Critical patent/GB2066682B/en
Expired legal-status Critical Current

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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
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/23—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis
    • B01F27/231—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with a variable orientation during mixing operation, e.g. with tiltable rotor axis
    • B01F27/2312—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with a variable orientation during mixing operation, e.g. with tiltable rotor axis the position of the rotating shaft being adjustable in the interior of the receptacle, e.g. to locate the stirrer in different locations during the mixing
    • 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
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/502—Vehicle-mounted mixing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/86—Mixing heads comprising a driven stirrer
    • 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
    • B01F35/40—Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
    • B01F35/41—Mounting or supporting stirrer shafts or stirrer units on receptacles
    • B01F35/411—Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting only one extremity of the shaft
    • B01F35/4111—Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting only one extremity of the shaft at the top of the receptacle
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1284—Mixing devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Accessories For Mixers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

Sewage agitating apparatus comprises a propeller-agitator arranged on an agitating tube or shaft 16 in which an axially extending row of holes 34 are provided, a pinion 32, engages the row of holes, and the pinion is supported on a driving sleeve 24 which is rotatably supported in a housing 18. The driving sleeve 24 which is connected to a motor 36 and surrounds the shaft 16, and drives the agitating shaft by way of gearing the pinion 32 is hand actuated for lowering and elevating the agitating shaft 16. The pinion 32 is rotatably supported on the attachment of the driving sleeve 24, and is provided with a locking mechanism. A stationary supporting tube 20 is mounted on the housing 18, and extends upwards above the pinion 32 and is provided with a bearing for the agitating shaft 16 at its upper end. The bearing and the pinion 32 are spaced from one another so that the agitating shaft is provided with greater rigidity. Thus, long agitating tubes or shafts can be used to agitate in cesspools having a great depth. The agitating tube can be rotated with greater speeds, so that propelling screws with a lower diameter can be used. <IMAGE>

Description

SPECIFICATION Sewage agitator The invention relates to a sewage agitator of the kind having a propeller, propelling screw or agitating blades arranged on an agitating tube or shaft surrounded by a driving sleeve.
A sewage agitator of this kind is known from my UK-Patent 12 501. The rotating agitating tube is supported only by a relatively short driving sleeve within a bearing sleeve below the housing. The agitating tube can only be rotated with low speeds.
Therefore large agitating blades are necessary.
Besides that, lowering and lifting of the agitator is not very easy, because the pinion for the vertical movement of the agitating tube must be moved into and out of engagement with the row of holes of the tube, whilst the pin arrangement must be moved out of and into a locking position respectively.
According to the invention, a sewage agitator comprises a propeller, propelling screw or agitating blades arranged on an agitating tube or shaft along a generating line of which a row of holes is provided, a pin arrangement engaging said row of holes being supported on an attachment of a driving sleeve which is rotatably supported in a housing and drivingly connected to a motor, whereby the driving sleeve surrounds the agitating tube or shaft and the latter is coupled by said pin arrangement for a common rotational movement with the driving sleeve, a hand-driven pinion being provided in order to engage the row of holes for lowering and elevating said agitating tube or shaft, wherein said pinion is rotatably supported on said attachment of the driving sleeve and at the same time forming said pin arrangement and permanently coupling the agitating tube with the driving sleeve that a locking mechanism for said pinion is provided and that a stationary supporting tube or shaft mounted on said housing extends upwards above said pinion and is provided with a bearing for the agitating tube or shaft at its upper end, whereby the bearing and the pinion are spaced from one another so that the agitating tube or shaft in its lowermost position ends below said agitating tube or shaft.
A plurality of advantages are gained by the invention. Long agitating tubes can be used to agitate in cesspools with a greater depth. The agitating tube can be rotated with greater speeds so that propelling screws with a lower diameter can be used. Even in the upper regions of completely filled cesspools the liquid can be agitated with high speeds because the upwardly extending agitating tube is additionally supported by a long stationary supporting tube having a bearing at its upper end for the agitating tube.
Further, the structure and handling of the device is much easier, because the pinion coupling the driving sleeve with the agitating tube is in permanent engagement with the latter, so that a pin arrangement is not longer necessary.
The invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 is a diagrammatic elevation of the agitator according to the invention; Figure 2 is an enlarged section through an upper end of the supporting structure of the agitating tube; Figure 3 is a cross-section through an agitatordrive; and Figure 4 is a cross-section taken on the line 4-4 of Figure 3.
Figure 1 shows an agitator 10 comprising a carriage 12 with a supporting arrangement 14 on which an agitating tube 16 is pivotably and vertically adjustably supported. A propelling screw is mounted at the lower end of the agitating tube 16.
The supporting arrangement 14 consists of three parts forming a rigid structure, i.e. a housing 18, a supporting tube 20 extending upwards from the housing 18 and a bearing sleeve 22 (shown in Figure 2) extending downwards from the housing 18. The bearing sleeve 22 is substantially shorter than the supporting tube 20. Figure 3 shows a driving sleeve 24 which is rotatably supported in the bearing sleeve 22 by ball bearings. An attachment 28 (Figure 4) is fastened to the driving sleeve 24 by a socket 26. A hollow shaft 30 provided with a fixed pinion 32 is rotatably supported in the attachment 28. The pinion 32 (as shown in Figures 3 and 4) is in permanent engagement with a row of holes or bores 34 provided along a generating line of the agitating tube 16 in the way of a tooth rack.The driving sleeve 24 as shown in Figure 1 is driven by an electric motor 36 via a transmission gear arranged beneath the housing 18. Figure 3 shows an alternative embodiment, in which the driving sleeve 24 is driven by a main shaft of a tractor by a bevel gear 38. The pinion 32 and the driving sleeve 24 rotate as a unit and the agitating tube 16 is coupled with that unit by the pinion 32. A dynamic balancing weight 40 is fastened to the socket 26 on the opposite side with respect to the pinion 32.
Figure 2 shows a ball bearing arranged at the upper end of the supporting tube 20, an inner ring 42 of which surrounds the agitating tube 16 with a small radial clearance. By rotating the pinion 32, the agitating tube 16 can be lifted into an upper working position in which the tube extends substantially beyond the bearing at the upper end of the supporting tube 20 so that the propelling screw works with low space below the upper wall of the cesspool in order to agitate the liquid adjacent the liquid level. Owing to the length of the supporting tube 20 in this uppermost working position, the agitating tube 16 can be rotated with high speed. When the agitating tube 16 is lowered, after having been stopped from rotating, the agitating tube 16 leaves the inner ring 42 of the ball bearing at the upper end of the supporting tube.When the agitating tube 16 is in a lowered position, the liquid in the bottom region of a cesspool can be agitated by rotating the tube 16 with the same high speed owing to a stabilizing effect of the liquid, although the upper bearing is inoperative. When the agitating tube 16 is lifted again, self-centering between the agitating tube and the inner ring 42 of the ball bearing takes place owing to a bevel 44 at the inner edge of the bottom face of the inner ring 42.
The inner ring 42 of the ball bearing is provided with a groove into which an O-ring 46 of elastic mat erial is inserted. The O-ring 46, which is made from rubber or the like, forms a damping element in order to achieve a noise damping, a vibration-free opera tion. The O-ring also prevents rotational movement of the inner ring 42 together with the tube 16.
When the agitating tube 16 is to be vertically adjusted, the rotation of the tube 16 is stopped and it is rotated by hand until the hollow shaft 30 is aligned with an opening 66 in the side wall of the housing 18 (as shown in Figure 4). Then a slip-on sleeve 48, provided with a handle is slipped onto the hollow shaft 30 and fixed by a bayonet catch. A locking mechanism 50 is operated to release the pinion 32 for rotation. The locking mechanism 50 consists of a locking pin 52 which can be moved into and out of aligned bores 54 and 56 of the pinion 32 and the attachment 28 respectively. The locking pin 52 is connected to an operating rod 64, which is parallel to the locking pin 52. The rod is displaceable within the axial bore of the hollow shaft 30 and is pre-loaded by a spring into its locking position.A stem 62 is similarly displaceable within a forward portion of the hollow shaft 30 and connected to a hand lever 58 which is guided in a helical groove 60 of the hollow shaft. Therefore, by pivoting the hand lever about 1800, the stem 62 contacting the rod 64 is moved axially inwards displacing the rod 64 and the locking pin 52, so that the pinion becomes released. Then the slip-on sleeve 48 is rotated in the desired direction by the handle in orderto lift or lower the agitating tube 16.
When the new position of the agitating tube 16 is reached, the hand lever 58 is pivoted back and locking of the locking mechanism 50 takes place after aligning a bore 54 of a plurality of circumferentially arranged bores provided in the pinion 32 with the pair of bores 56 provided in the attachment 28.
Alternatively, the locking pin 52 can co-operate with the tooth gaps of the pinion 32.
In order to prevent rotation of the agitating tube 16 with the slip-on sleeve 48 in the operating position shown in Figure 4, a safety member 68 is provided, which must be swung into a closed position covering the opening 66 in the housing 18. This movement can only take place when the slip-on sleeve 48 is removed. In the closed position of the safety member 68, the electric motor 36 is switched off by an electric switch.
The tooth pitch of the pinion 32 and the space of the bores 54 of the pinion 32 are defined in relation with respect to the level of the elastic ring 46, so that the latter will always be in a position between two adjacent holes 34 of the agitating tube 16 when the pinion is locked.
In an alternative embodiment, the driving sleeve 24 is extended upwards so that it can be supported by the ball bearing at the upper end of the support ing tube. In this embodiment, the upper end of the agitating tube 16 is supported when the tube 16 is in its lowermost position. Figure 3 shows a safety pawl 72, which is provided for latching the pinion 32. The pawl 72 engages the teeth of the pinion 32 in such way that only rotation in one direction -- i.e. the direction which corresponds to a lowering of the agitating tube 16~is prevented. In orderto lower the agitating tube 16 by turning the slip-on sleeve, the pawl 72 must be released by pressing a stem inwards against the operation of a return spring.

Claims (9)

1. Sewage agitator comprising a propeller, prop elling screw or agitating blades arranged on an agitating tube or shaft along a generating line of which a row of holes is provided, a pin arrangement engaging said row of holes being supported on an attachment of a driving sleeve which is rotatably supportedlin a housing and drivingly connected to a motor, wherebythe driving sleeve surrounds the agitating tube or shaft and the latter is coupled by said pin arrangement for a common rotational movement with the driving sleeve, a hand-driven pinion being provided in orderto engage the row of holes for lowering and elevating said agitating tube or shaft, wherein said pinion is rotatably supported on said attachmentofthe driving sleeve and at the same time forming said pin arrangement and permanently coupling the agitating tube or shaft with the driving sleeve that a locking mechanism for said pinion is provided and that a stationary supporting tube or shaft mounted on said housing extends upwards above said pinion and is provided with a bearing for the agitating tube or shaft at its upper end, whereby the bearing and the pinion are spaced from one another so that the agitating tube or shaft in its lowermost position ends below said agitating tube or shaft.
2. Sewage agitatoras claimed in claim 1, wherein said driving sleeve is provided with a dynamic balancing weight substantially arranged oppositely with respect to the pinion.
3. Sewage agitator as claimed in claim 1, wherein the bearing at the upper end of the supporting tube is a ball bearing, the inner ring of which being bevelled at its lower inner circumference and/or the upper inner circumference of the agitating tube or shaft being bevelled.
4. Sewage agitator as claimed in claim 3, wherein the inner ring of the ball bearing is provided with an elastic O-ring inserted into a groove of said inner ring.
5. Sewage agitator as claimed in claim 1, wherein said pinion is fixed on a hollow shaft which is connectable with a slip-on sleeve carrying a handle.
6. Sewage agitator as claimed in claim 5, wherein a rod is axially displaceably supported in the hollow shaft and protrudes from the hollow shaft and carries a locking pin at its end, the locking pin being substantially parallel and spaced from the rod and by its axial displacement being insertable into one of a plurality of axial bores of the pinion or into one of its tooth gaps, the locking mechanism being shiftable into its locking position by a return spring.
7. Sewage agitator as claimed in claim 4 claim 6, wherein the elastic O-ring and the pinion have a definite spacing which corresponds to the pitch of the bores or tooth gaps of the locking mechanism such that the O-ring lies between a pair of the plurality of holes in the agitating tube or shaft when the pinion is locked.
8. Sewage agitator as claimed in claim 1, wherein the housing surrounding the pinion is cylin drical and forms a supporting structure at the lower end of which a downwardly extending bearing sleeve for the agitating tube or shaft is fastened and bat the upper end of the housing said upwardly extending supporting tube being fastened, the lon gitudinal extension of which being greater than that .of the bearing sleeve.
9. Sewage agitator substantially as herein described with reference to the accompanying draw ings.
GB8009705A 1979-12-13 1980-03-21 Agitating sewage Expired GB2066682B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792950075 DE2950075A1 (en) 1979-12-13 1979-12-13 MIXER

Publications (2)

Publication Number Publication Date
GB2066682A true GB2066682A (en) 1981-07-15
GB2066682B GB2066682B (en) 1983-04-07

Family

ID=6088321

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8009705A Expired GB2066682B (en) 1979-12-13 1980-03-21 Agitating sewage

Country Status (4)

Country Link
BE (1) BE881252A (en)
DE (1) DE2950075A1 (en)
DK (1) DK51580A (en)
GB (1) GB2066682B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113797816A (en) * 2021-09-27 2021-12-17 南京艾德森水务有限公司 Submersible mixer for sewage treatment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131691A1 (en) * 1991-09-24 1993-03-25 Klein Schanzlin & Becker Ag SUPPORTING FRAME FOR AN ENVIRONMENTAL DEVICE
DE29509510U1 (en) * 1995-06-14 1995-08-31 Berg GmbH, 51688 Wipperfürth Color waste water purifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113797816A (en) * 2021-09-27 2021-12-17 南京艾德森水务有限公司 Submersible mixer for sewage treatment

Also Published As

Publication number Publication date
DE2950075C2 (en) 1988-07-21
GB2066682B (en) 1983-04-07
BE881252A (en) 1980-05-16
DE2950075A1 (en) 1981-06-19
DK51580A (en) 1981-06-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee