EP0580555A1 - Moyeu pour remueur à hélice - Google Patents

Moyeu pour remueur à hélice Download PDF

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Publication number
EP0580555A1
EP0580555A1 EP93810520A EP93810520A EP0580555A1 EP 0580555 A1 EP0580555 A1 EP 0580555A1 EP 93810520 A EP93810520 A EP 93810520A EP 93810520 A EP93810520 A EP 93810520A EP 0580555 A1 EP0580555 A1 EP 0580555A1
Authority
EP
European Patent Office
Prior art keywords
propeller
hub
clamping device
slowly rotating
arms
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Withdrawn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
EP93810520A
Other languages
German (de)
English (en)
Inventor
Eduard Arnold
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.)
Arnold AG
Original Assignee
Arnold AG
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 Arnold AG filed Critical Arnold AG
Publication of EP0580555A1 publication Critical patent/EP0580555A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft

Definitions

  • the invention relates to a hub for slowly rotating propeller stirrers, according to the characterizing features of claim 1.
  • the stirring serves for the uniform distribution of dissimilar substances in any weight ratio and the stabilization of this state.
  • maintaining the suspended state of the solids has top priority, because the deposition of the chemically biologically active solids leads to anaerobic changes in these substances.
  • Tasks of this type are common in biological wastewater treatment, where the stirrers of slow-running propellers are preferred in order to save energy.
  • Another advantage of these propeller stirrers is that they are less sensitive to blocking by spun fibers and threads than the high-speed machines. In order to be able to treat suspensions with increased fiber and thread content and sufficient availability, propellers with propeller blades bent backwards in the direction of rotation have been proposed.
  • the present invention sets itself the task for the propeller bent backwards in the direction of rotation to create the possibility of changing the propeller geometry. According to the invention, this object is achieved by the characterizing features of claim 1 such that the pitch and the radius of the stirring propeller can be changed.
  • the propeller hub 1 of FIG. 1 has a central bore 2 in the axis of symmetry and shows the three spiral arms 4 ', 4'',4''' protruding from the hub 3 and arched around the hub 3.
  • the arms 4 ', 4'',4''' each end in a clamping device 5 ', 5'',5''' which is shaped like a clamp and directly with the arms 4 ', 4'',4''' connected legs 6 ', 6'',6'' and in each case one leg 7 ', 7 connected to the arms 4', 4 '', 4 ''' by the legs 6', 6 '', 6 ''''', 7 ''.
  • the legs 6 ', 7' and 6 '', 7 '', 6 ''',7''' enclose the recess 8 'and 8'',8''' in a clamp-like manner, which is used to hold and hold the Holmes (not shown) of a propeller wing is used.
  • the circular cross-section of the recesses 8 ', 8'',8''' is intended for receiving and holding the (not shown) cylindrical prop bar.
  • the Clamping devices 5 ', 5'',5'''' are several through holes 9 ', 9'',9''' for receiving screws 10 ', 10'',10''' provided as clamping means for the generation the clamping force and thus for holding the spars of the propeller blades embedded in the recesses 8 ', 8'',8'''.
  • the propeller pitch can be adjusted by turning the propeller blades into the recesses 8 ', 8'',8'''. By moving the propeller spar into the recesses 8 ', 8'',8''' the change in the radius of the propeller blades can be achieved.
  • the recess 8 ′′ of the clamping device 5 ′′ ends in a slot 11 ′′ according to FIG. According to the width of this slot 11 ′′, the cylindrical spar of the propeller blade can be lowered into the clamping device.
  • the fact that a marking or adjustment of the propeller pitch with a notch 12 on the front surface of the clamping device 5 ′′ and a sift in the propeller spar is possible is also indicated in FIG. 1.
  • the shape of the propeller hub 1 in FIGS. 1 and 2 is castable and permits casting, which is considered an inexpensive manufacturing process. For storage and handling, the same design offers the advantage that it is designed as a monoblock and thus consists of one piece except for the clamping means 10.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP93810520A 1992-07-21 1993-07-20 Moyeu pour remueur à hélice Withdrawn EP0580555A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2298/92 1992-07-21
CH2298/92A CH685603A5 (de) 1992-07-21 1992-07-21 Nabe für Propellerrührer.

Publications (1)

Publication Number Publication Date
EP0580555A1 true EP0580555A1 (fr) 1994-01-26

Family

ID=4230520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93810520A Withdrawn EP0580555A1 (fr) 1992-07-21 1993-07-20 Moyeu pour remueur à hélice

Country Status (2)

Country Link
EP (1) EP0580555A1 (fr)
CH (1) CH685603A5 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB276266A (en) * 1927-03-30 1927-08-25 Barrymore Concrete Mixer Corp Concrete mixer
FR887413A (fr) * 1941-03-06 1943-11-12 Mélangeur de sables et graviers
FR1360251A (fr) * 1963-03-25 1964-05-08 Pechiney Saint Gobain Perfectionnement à la polymérisation en masse de dérivés de l'éthylène
CH487720A (it) * 1968-06-04 1970-03-31 In Nome Collettivo Braima Di T Contenitore mescolatore per conglomerati cementizi
FR2236551A1 (en) * 1973-06-26 1975-02-07 Socomel S-shaped blade with inclined wedge ends - for mixer-crusher, secured to driving shaft by conical locking screw

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB276266A (en) * 1927-03-30 1927-08-25 Barrymore Concrete Mixer Corp Concrete mixer
FR887413A (fr) * 1941-03-06 1943-11-12 Mélangeur de sables et graviers
FR1360251A (fr) * 1963-03-25 1964-05-08 Pechiney Saint Gobain Perfectionnement à la polymérisation en masse de dérivés de l'éthylène
CH487720A (it) * 1968-06-04 1970-03-31 In Nome Collettivo Braima Di T Contenitore mescolatore per conglomerati cementizi
FR2236551A1 (en) * 1973-06-26 1975-02-07 Socomel S-shaped blade with inclined wedge ends - for mixer-crusher, secured to driving shaft by conical locking screw

Also Published As

Publication number Publication date
CH685603A5 (de) 1995-08-31

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