DE19755239A1 - Apparatus for prevention of material caking on mixer arms - Google Patents
Apparatus for prevention of material caking on mixer armsInfo
- Publication number
- DE19755239A1 DE19755239A1 DE19755239A DE19755239A DE19755239A1 DE 19755239 A1 DE19755239 A1 DE 19755239A1 DE 19755239 A DE19755239 A DE 19755239A DE 19755239 A DE19755239 A DE 19755239A DE 19755239 A1 DE19755239 A1 DE 19755239A1
- Authority
- DE
- Germany
- Prior art keywords
- agitator
- arms
- prevention
- mixer
- caking
- 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- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims abstract description 4
- 230000002265 prevention Effects 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 description 6
- 239000000654 additive Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/40—Mixers with shaking, oscillating, or vibrating mechanisms with an axially oscillating rotary stirrer
- B01F31/401—Mixers with shaking, oscillating, or vibrating mechanisms with an axially oscillating rotary stirrer for material flowing continuously axially therethrough
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/48—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions wherein the mixing is effected by vibrations
- B28C5/485—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions wherein the mixing is effected by vibrations with reciprocating or oscillating stirrers; Stirrers therefor
-
- 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
- B01F27/82—Pan-type mixers, i.e. mixers in which the stirring elements move along the bottom of a pan-shaped receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/44—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/16—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis
- B28C5/166—Pan-type mixers
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Verhinderung von Mischgutanbackungen an den Rührarmen von Mischern, insbesondere Tellerzwangsmischern.The invention relates to a method and a device for preventing Mixing of cakes on the mixing arms of mixers, especially compulsory mixers.
Solche Mischer werden z. B. in der Betonsteinefertigung eingesetzt. Die Mischungen sind im Vergleich zu Betonmischungen des Brücken- und Hausbaues sehr trocken, d. h. der Wasseranteil ist gering und der Anteil an Bindemitteln bzw. allgemein Feinanteilen (auch durch Farbzusätze) relativ hoch. Dadurch neigen diese Mischungen zu Verklumpungen und Anbackungen vor allem an den Rührwerksarmen und -schaufeln.Such mixers are e.g. B. used in concrete block production. The mixtures are in Very dry compared to concrete mixes in bridge and house construction, d. H. of the The proportion of water is low and the proportion of binders or generally fine fractions (also due to color additives) relatively high. As a result, these mixtures tend to clump and Caking especially on the agitator arms and blades.
Diese Anbackungen bestehen aus Schichten der verschiedenen Feinanteilzusätze, sind also nicht homogen gemischt und der Mischung entzogen. Immer wieder lösen sich diese Anbackungen bei Erschütterungen z. B. beim Entleervorgang, geraten in die fertige Mischung und verursachen Ausschuß, der anlagenbedingt erst am Ende der Fertigung entdeckt wird.These cakes consist of layers of the various fine fraction additives, so they are not mixed homogeneously and withdrawn from the mixture. Again and again they come loose Caking on vibrations z. B. in the emptying process, get into the finished mixture and cause rejects which, due to the plant, are only discovered at the end of production.
Dieser Ausschuß bedeutet Zeit und Energievergeudung.This committee means time and energy wasted.
Ähnliche Probleme gibt es auch bei anderen Anwendungsfällen.There are similar problems in other use cases.
Eine Lösung dieser Problematik ist beim bisherigen Stand der Technik nicht gegeben. Es ist deshalb Aufgabe der Erfindung, dieses Problem zu lösen.There is no solution to this problem in the prior art. It is therefore the object of the invention to solve this problem.
Das wird dadurch erreicht, daß während des Mischvorganges die anbackungsempfindlichen Teile des Mischers dauernd oder alternierend in Vibrationen versetzt werden, z. B. mit Hilfe von Rüttlern bzw. Klopfern, die bei der geschilderten Anwendung auf den Rührarmen montiert sind. Die dazu notwendige elektrische Energie bzw. Luft wird hierzu über einen Drehübertrager an der Rührwerkswelle den Rüttlern bzw. Klopfern zugeleitet. Eine weitere Möglichkeit ist die Rührwerksbewegung mit einer entsprechenden Schwingung zu überlagern z. B. durch einen impulshydraulischen Antrieb.This is achieved in that the caking-sensitive during the mixing process Parts of the mixer are continuously or alternately vibrated, e.g. B. with help of vibrators or knockers, which in the described application on the mixing arms are mounted. The electrical energy or air required for this is provided via a Rotary transformer on the agitator shaft fed to the vibrators or knockers. Another It is possible to overlay the agitator movement with a corresponding vibration e.g. B. by an impulse hydraulic drive.
Die Vibrationen haben einen positiven Nebeneffekt. Sie verbessern zusätzlich den Mischeffekt, da sie die Reibung des Mischgutes an den Rührarmen verringern.The vibrations have a positive side effect. They also improve the Mixing effect as they reduce the friction of the mix on the mixing arms.
In Folgendem ist beispielhaft eine erfindungsgemäße Vorrichtung beschrieben:A device according to the invention is described by way of example below:
Fig. 1 zeigt einen Tellerzwangsmischer von oben mit zwei Rührarmen. Fig. 1 shows a compulsory plate mixer from above with two stirring arms.
Fig. 2 stellt einen Querschnitt dieses Mischers dar. Fig. 2 shows a cross section of this mixer.
Fig. 3 zeigt eine Detailansicht eines Rührarmes. Fig. 3 shows a detailed view of a stirring arm.
Der in Fig. 1 und 2 dargestellte Tellerzwangsmischer besteht im Wesentlichen aus dem Tellertrog 1, dem Rührwerk 2 mit den Rührarmen 3 und dem Antrieb 4. Die Mischkomponenten gelangen über eine oder mehrere Einlaufrohre oder Trichter 5 in den Mischer und die fertige Mischung wird z. B. über einen Entleerschieber 6 entleert. Bei der Drehung in Drehrichtung 7 des Rührwerkes (2) im Mischgut entstehen nach dem Stand der Technik an den Rührarmen 3 im Bereich der Schaufeln 8 (Fig. 3) Anbackungen 9, die die genannten Probleme verursachen. Die beispielhaft genannte erfindungsgemäße Vorrichtung zur Verhinderung der Anbackungen 9 ist in Fig. 3 gut erkennbar skizziert. Es handelt sich um einen Rüttler bzw. Klopfer 10, der über elastische Verbindungsglieder 11 so mit dem Rührarm 3 verbunden ist, daß seine Unwucht wie Hammerschläge auf den Rührarm einwirkt und diesen zum Schwingen anregt.The compulsory plate mixer shown in FIGS . 1 and 2 essentially consists of the plate trough 1 , the stirrer 2 with the stirrer arms 3 and the drive 4 . The mixing components pass through one or more inlet pipes or funnels 5 into the mixer and the finished mixture is z. B. emptied via a discharge slide 6 . When rotating in the direction of rotation 7 of the agitator ( 2 ) in the material to be mixed, caking 9 occurs in the mixing arms 3 in the area of the blades 8 ( FIG. 3), which causes the problems mentioned. The exemplary device according to the invention for preventing caking 9 is sketched out clearly in FIG. 3. It is a vibrator or knocker 10 which is connected to the agitator arm 3 via elastic connecting members 11 in such a way that its imbalance acts on the agitator arm like hammer blows and excites it to oscillate.
In Fig. 2 ist ein Drehübertrager 12 schematisch dargestellt, der auf der Rührwerkswelle 13 angebracht ist und die Rüttler bzw. Klopfer 10 auf den Rührarmen 3 mit elektrischer Energie bzw. Luft versorgt.In Fig. 2, a rotary transmitter 12 is shown schematically, which is attached to the agitator shaft 13 and supplies the vibrators or knockers 10 on the agitator arms 3 with electrical energy or air.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19755239A DE19755239A1 (en) | 1997-12-12 | 1997-12-12 | Apparatus for prevention of material caking on mixer arms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19755239A DE19755239A1 (en) | 1997-12-12 | 1997-12-12 | Apparatus for prevention of material caking on mixer arms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19755239A1 true DE19755239A1 (en) | 1999-06-17 |
Family
ID=7851667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19755239A Withdrawn DE19755239A1 (en) | 1997-12-12 | 1997-12-12 | Apparatus for prevention of material caking on mixer arms |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19755239A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441941A (en) * | 2011-11-09 | 2012-05-09 | 冯忠绪 | Single horizontal shaft vibration mixer |
| EP2617543A1 (en) * | 2012-01-20 | 2013-07-24 | Haarup Maskinfabrik A/S | A batch mixer for mixing face mix and a method for cleaning a batch mixer |
| CN113478652A (en) * | 2021-07-07 | 2021-10-08 | 宁夏建设职业技术学院 | Building powder mixing arrangement |
-
1997
- 1997-12-12 DE DE19755239A patent/DE19755239A1/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441941A (en) * | 2011-11-09 | 2012-05-09 | 冯忠绪 | Single horizontal shaft vibration mixer |
| CN102441941B (en) * | 2011-11-09 | 2014-08-20 | 西安德通交通科技有限公司 | Single horizontal shaft vibration mixer |
| EP2617543A1 (en) * | 2012-01-20 | 2013-07-24 | Haarup Maskinfabrik A/S | A batch mixer for mixing face mix and a method for cleaning a batch mixer |
| CN113478652A (en) * | 2021-07-07 | 2021-10-08 | 宁夏建设职业技术学院 | Building powder mixing arrangement |
| CN113478652B (en) * | 2021-07-07 | 2022-04-12 | 宁夏建设职业技术学院 | Building powder mixing arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |