EP0422454A1 - Pétrisseur à mélanger - Google Patents
Pétrisseur à mélanger Download PDFInfo
- Publication number
- EP0422454A1 EP0422454A1 EP19900118626 EP90118626A EP0422454A1 EP 0422454 A1 EP0422454 A1 EP 0422454A1 EP 19900118626 EP19900118626 EP 19900118626 EP 90118626 A EP90118626 A EP 90118626A EP 0422454 A1 EP0422454 A1 EP 0422454A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- arm
- kneading
- section
- rotation
- 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
Links
Images
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
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
- B01F27/707—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms the paddles co-operating, e.g. intermeshing, with elements on the receptacle wall
Definitions
- the invention relates to a mixer kneader for the mechanical and / or thermal treatment of products in a liquid, pasty and / or powdery state according to the preamble of claim 1.
- Such a mixer kneader is known for example from DE-PS 23 49 106.
- the fixed kneading counter element essentially also consists of a hook that cleans both the disk segments and the shaft.
- the arm cleaning the shaft is directed against the direction of rotation of the shaft. This has the disadvantage that this part of the hook, which is furthest from the attachment point, is exposed to considerable forces which, for example, can be caused by very hard incrustation of the product on the shaft.
- this arm near the shaft cuts into the incrustation of the product and can be torn off when the shaft is turned further.
- a kneading gap is formed between the arm near the shaft and the leg near the housing, through which the product is pressed. Since both the arm near the shaft and the leg near the housing are static parts, a product bridge can easily form between them, which can grow up to the opposite kneading element and thus build up a product torus. This then significantly worsens the kneading effect.
- the kneading counter elements according to DE-PS 23 49 106 are subjected to significant forces, they are preferably cast. This is especially true for the reasons of their design, which is quite complicated. A dough hook cast in this way is relatively expensive.
- the inventor has set itself the goal of developing a mixer kneader of the type mentioned above, in which the kneading counter elements are inexpensive to manufacture and easier to shape. Furthermore, they should be exposed to lower mechanical forces and in particular reduce the torque absorption of the shaft.
- This section therefore no longer strikes the shaft radially or is no longer directed against the direction of rotation of the shaft, so that the risk of excessive stressing of the section or of the arm near the shaft formed thereon is avoided.
- the center line of the arm runs parallel to the lateral surface of the shaft. It should also run in a helical line inclined in the direction of rotation of the shaft. This also means that the arm does not oppose excessive incrustation of the product, on the contrary, an elastic yielding of the arm and also of the section near the disc segment is facilitated.
- a further improvement is achieved in that the hook as a whole is C-shaped, with a leg adjoining the section at the other end of the arm, the center line of which, in turn, preferably extends helically in the direction of rotation at an angle to an imaginary line arranged parallel to the casing surface .
- this also has the advantage that a kneading area is formed between the leg and the shaft, which is formed on the one hand by the static leg and on the other hand by the rotating shaft.
- the product now does not have to pass through a kneading area between two static device parts, so that a product torus which does not stop can build up here.
- the shaft pushes the product through the kneading area without the shaft having to absorb more force.
- the area that then follows the kneading area between the static leg near the inner wall of the housing and the arm that takes the welfare has a larger opening area, so that the product previously deformed in the kneading area passes through this area without difficulty.
- a support is connected directly to the section or if the leg is present, the axis of which runs approximately radially to the axis of rotation of the shaft.
- This support is intended to hold the entire hook and forms a kneading gap together with the leg and a part of the housing inner wall assigned to the leg. A part of a kneading ingot which is arranged on the disk segments of the shaft can then pass through this kneading gap.
- the kneading counter-element according to the invention has a significantly improved mixing action and product promotion, its production being made easier and cheaper.
- the torque consumption is significantly reduced.
- the hook of the kneading counter element is produced in one piece from a band-shaped metal strip as a sheet metal hook.
- this sheet metal hook has a sufficient rigidity by appropriate choice of its thickness in relation to its width or length, but this does not affect the elasticity of the hook.
- the edge is ground or chamfered accordingly, so that a scraping edge is created, for example, for the shaft surface on the arm and the disk segment surface on the section.
- connection between the leg and the support can also be facilitated in that a cone is placed on the end face of the support and engages in a corresponding opening in the leg. There it is then fixed by welding.
- a mixing kneader R has a housing 1. This housing 1 is surrounded by a heating jacket 2 or by heating channels. There are one or more nozzles 3 on top of the housing 1 for filling in a starting product and for removing vapors. The finished product is discharged at a lower outlet nozzle 4. Feet 5 serve to support the mixing kneader R.
- An end wall 6 is equipped with a stuffing box 7 and connected to a lantern 8 for supporting a bearing 9 for an agitator shaft 10.
- a lantern 12 also surrounding a corresponding gland, not shown, and a bearing 13 connected to this lantern 12.
- the opposite agitator shaft pin 14 still looks out of this bearing 13.
- the agitator shaft pin 10 extends through the rest of the bearing 9 and is then connected to a slip-on gear 15, via which the agitator shaft pin 10 and 14 and thus a shaft 16 are rotated about the axis A.
- the drive takes place via a drive motor, not shown, which rotates a V-belt wheel 17.
- the shaft 16 is normally heatable and coolable, the supply of the corresponding heating or cooling medium through a connector 18 and the return through an additional connector 19.
- Kneading elements 20 which essentially consist of disk segments 21 and attached kneading bars 22, sit on the shaft 16.
- the disk segments 21 rotate with the shaft 16, the kneading bars 22 brushing past the inner housing jacket 23 at a short distance.
- these kneading bars 22 clean the inner casing of any product incrustations that may be present.
- Adjacent disk segments 21 form a kneading space 24 between them. Furthermore, adjacent kneading bars 22 leave a gap 25 between them, through which a support 26 of a kneading counter element 27 can slide in the use position.
- This kneading counter element 27 is essentially designed as a kneading hook, with an axially parallel leg 28 adjoining the support 26 running radially to the shaft 16.
- This axially parallel leg 28, which, however, can run parallel to the inner surface of the housing in a helically inclined manner, forms, together with the respective part of the kneading bar 22, a kneading gap 29 through which the kneading bar 22 must move.
- the product to be processed is also pressed through, sheared and kneaded between the leg 28 and the inner housing jacket 23.
- This radial section 30 has the task of freeing the disk segments 21 from product incrustations. The product is of course also sheared between the radial section and the disk segment, so that the kneading effect is also improved as a result.
- an arm 31 assigned to the shaft 16 is then molded onto the radial section 30, which arm is preferably adapted in part to the outer surface of the shaft 16 and slides past this outer surface.
- This arm 31 has the primary task of cleaning the outer surface of the shaft 16.
- Kneading counter-elements 27 are shown in FIG. Similar kneading counter elements, which is not shown in detail, can be provided opposite in the housing 1, these kneading counter elements then stripping off the other surface of the disk segments 21 with a corresponding radial section as they slide past and also scraping off the outer surface of the shaft, which has not been cleaned by the arm 31 .
- the arrangement or configuration of the kneading counter element 27 can be seen better in FIGS. 2, 3 and 4.
- the support 26 sits in the housing 1 such that its axis B runs radially to the axis of rotation A.
- This support 26 then has a cone 33 on its end face 32, to which a hook 34 made of a band-shaped material connects.
- This hook 34 comprises the axially parallel leg 28, the radial section 30 and the arm 31.
- the cone 33 is inserted in the axially parallel leg 28 and is connected to the support 26 via two weld seams 35 and 36.
- the shape of the hook 34 is essential. Firstly, the leg 28, which together with the kneading bar 22 forms the kneading gap 29, is inclined by an angle w to a line C running parallel to the axis of rotation A. This is shown in FIG. 4 by the course shown a center line M of the leg 28 to this line C clearly.
- the radial section 30 adjoining the leg 28 likewise has a center line N, which forms an angle v with an imaginary line running parallel to the axis B (see FIG. 3).
- This center line N is inclined in the direction of rotation Z of the shaft 16.
- the arm 31 has a curved center line O, the curvature of which is approximately adapted to the lateral surface 37 of the shaft 16. At the same time, this center line O does not run parallel to the axis of rotation A or the line C shown in FIG. 4, but also here at an angle z. The arm 31 thus follows the direction of rotation Z of the shaft 16.
- the operation of this kneading counter element 27 according to the invention is as follows:
- the product reaches not only the kneading gap 29 but also the kneading area K between the static support 26 or the leg 28 and the moving shaft 16.
- the rotating shaft 16 presses the product against the latter static part of the kneading counter element, whereby the leg 28 of the kneading counter element 27 is only slightly stressed.
- the shaft 16 is also subject to less stress, so that the force absorption of the shaft can be reduced.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Accessories For Mixers (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90118626T ATE82872T1 (de) | 1989-10-04 | 1990-09-28 | Mischkneter. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH3619/89 | 1989-10-04 | ||
CH3619/89A CH679290A5 (fr) | 1989-10-04 | 1989-10-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0422454A1 true EP0422454A1 (fr) | 1991-04-17 |
EP0422454B1 EP0422454B1 (fr) | 1992-12-02 |
Family
ID=4259873
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90118626A Expired - Lifetime EP0422454B1 (fr) | 1989-10-04 | 1990-09-28 | Pétrisseur à mélanger |
Country Status (7)
Country | Link |
---|---|
US (1) | US5121992A (fr) |
EP (1) | EP0422454B1 (fr) |
AT (1) | ATE82872T1 (fr) |
CA (1) | CA2026845C (fr) |
CH (1) | CH679290A5 (fr) |
DE (1) | DE59000547D1 (fr) |
ES (1) | ES2036878T3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994020567A1 (fr) * | 1993-03-10 | 1994-09-15 | Coates Brothers Plc | Dispersion |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1008407A6 (nl) * | 1993-02-12 | 1996-05-07 | Mach Collette S A Nv | Mengtoestel voor het beluchten en mengen van verpompbare, half-vloeibare produkten. |
US5332313A (en) * | 1993-03-12 | 1994-07-26 | Dow Corning Corporation | Nozzle mixer assembly |
IL113562A (en) * | 1995-05-01 | 1999-08-17 | Bromine Compounds Ltd | Process for the production of finely granulated solid chemical compounds |
NL1000276C2 (nl) * | 1995-05-02 | 1996-11-05 | Akzo Nobel Nv | Werkwijze ter vervaardiging van vezels uit poly(p-fenyleen- tereftaalamide). |
DE19533693A1 (de) * | 1995-09-12 | 1997-03-13 | List Ag | Mischkneter |
US6150498A (en) * | 1996-07-12 | 2000-11-21 | The Dow Chemical Company | Polymer recovery |
DE19743923C2 (de) * | 1997-10-04 | 2000-06-15 | Loedige Maschbau Gmbh Geb | Mischwerkzeug |
EP0957150A1 (fr) * | 1998-05-15 | 1999-11-17 | Carbochimica S.p.A. | Goudron et/ou huile de brai ayant une faible teneur à des substances aromatiques polycycliques et procédé de préparation |
US6410783B1 (en) | 2000-10-19 | 2002-06-25 | Basf Corporation | Method of producing carboxylic acid salts |
EP1390132A2 (fr) * | 2001-04-25 | 2004-02-25 | List Ag | Barres melangeuses a effet nettoyant dans le sens radial ou axial |
DE10331952A1 (de) * | 2003-07-15 | 2005-02-10 | Degussa Ag | Vorrichtung und Verfahren zur diskontinuierlichen Polykondensation |
US20050096502A1 (en) * | 2003-10-29 | 2005-05-05 | Khalili Theodore M. | Robotic surgical device |
US20100311920A1 (en) | 2005-08-26 | 2010-12-09 | Cid Centro De Investigacion Y Desarrollo Tecnologico Sa De Cv | Using Reactive Block Copolymers as Chain Extenders and Surface Modifiers |
DE102006015541A1 (de) * | 2006-03-31 | 2007-10-04 | List Holding Ag | Verfahren und Vorrichtung zur Behandlung von zähviskosen Produkten |
US20100311849A1 (en) | 2006-08-23 | 2010-12-09 | Cid Centro De Investigacion Y Desarrollo Tecnologico Sa De Cv | Using Reactive Block Copolymers as Chain Extenders and Surface Modifiers |
DE102009036915A1 (de) | 2009-08-11 | 2011-02-24 | List Holding Ag | Verfahren zum Behandeln eines Monomers, Pre-Polymers, Polymers oder einer entsprechenden Mischung |
WO2016023931A1 (fr) | 2014-08-13 | 2016-02-18 | Versalis S.P.A. | Rotor et dispositif d'agitation |
CN112045883B (zh) * | 2020-08-28 | 2022-09-09 | 东莞市信诚硅胶电子有限公司 | 一种新型可自动翻转橡胶的塑炼机 |
CN112619524B (zh) * | 2021-03-09 | 2021-07-06 | 山东鸿承矿业(集团)有限公司 | 一种用于生产硫铁精矿粉的搅拌装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH661450A5 (en) * | 1984-04-30 | 1987-07-31 | List Ind Verfahrenstech | Kneader mixer having counter-elements |
EP0289647A1 (fr) * | 1987-05-06 | 1988-11-09 | List AG | Pétrin à disques |
EP0304925A1 (fr) * | 1987-08-28 | 1989-03-01 | List AG | Malaxeur comportant des fourches de malaxage |
EP0320586A1 (fr) * | 1987-12-18 | 1989-06-21 | Zimmer Aktiengesellschaft | Appareil pour traiter des substances à forte viscosité |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190006207A (en) * | 1900-04-03 | 1900-05-05 | Carl Lauber | Improvements in Trough-like Mixing Machines. |
CA1018514A (en) * | 1974-10-25 | 1977-10-04 | Basil A. Burgess | Interdigitating helical blades and baffle fingers in a rotating, shear stirrer |
DE3538070A1 (de) * | 1985-10-25 | 1987-04-30 | Krauss Maffei Ag | Misch- und knetvorrichtung |
CH672749A5 (fr) * | 1986-12-19 | 1989-12-29 | List Ag | |
CH678285A5 (fr) * | 1988-02-16 | 1991-08-30 | List Ag |
-
1989
- 1989-10-04 CH CH3619/89A patent/CH679290A5/de not_active IP Right Cessation
-
1990
- 1990-09-28 ES ES199090118626T patent/ES2036878T3/es not_active Expired - Lifetime
- 1990-09-28 AT AT90118626T patent/ATE82872T1/de not_active IP Right Cessation
- 1990-09-28 EP EP90118626A patent/EP0422454B1/fr not_active Expired - Lifetime
- 1990-09-28 DE DE9090118626T patent/DE59000547D1/de not_active Expired - Fee Related
- 1990-10-03 CA CA002026845A patent/CA2026845C/fr not_active Expired - Fee Related
- 1990-10-04 US US07/592,615 patent/US5121992A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH661450A5 (en) * | 1984-04-30 | 1987-07-31 | List Ind Verfahrenstech | Kneader mixer having counter-elements |
EP0289647A1 (fr) * | 1987-05-06 | 1988-11-09 | List AG | Pétrin à disques |
EP0304925A1 (fr) * | 1987-08-28 | 1989-03-01 | List AG | Malaxeur comportant des fourches de malaxage |
EP0320586A1 (fr) * | 1987-12-18 | 1989-06-21 | Zimmer Aktiengesellschaft | Appareil pour traiter des substances à forte viscosité |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994020567A1 (fr) * | 1993-03-10 | 1994-09-15 | Coates Brothers Plc | Dispersion |
Also Published As
Publication number | Publication date |
---|---|
CA2026845C (fr) | 1994-11-01 |
CH679290A5 (fr) | 1992-01-31 |
CA2026845A1 (fr) | 1991-04-05 |
ES2036878T3 (es) | 1993-06-01 |
EP0422454B1 (fr) | 1992-12-02 |
DE59000547D1 (de) | 1993-01-14 |
US5121992A (en) | 1992-06-16 |
ATE82872T1 (de) | 1992-12-15 |
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