EP0611937B1 - Mischer-Trockner - Google Patents
Mischer-Trockner Download PDFInfo
- Publication number
- EP0611937B1 EP0611937B1 EP93120513A EP93120513A EP0611937B1 EP 0611937 B1 EP0611937 B1 EP 0611937B1 EP 93120513 A EP93120513 A EP 93120513A EP 93120513 A EP93120513 A EP 93120513A EP 0611937 B1 EP0611937 B1 EP 0611937B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- mixer
- drying gas
- longitudinal axis
- central longitudinal
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
- F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
- F26B25/007—Dust filtering; Exhaust dust filters
Definitions
- the invention relates to a mixer-dryer according to the preamble of Claim 1.
- DE-U-91 06 640 describes a device for conditioning powder Bulk, especially powdered sugar, known.
- a device has a gas vent that is provided above the housing receiving a mixer.
- the longitudinal extension the gas discharge in the direction of the axis of rotation of the mixer amounts to at most 1/4 of the length of the housing.
- the bottom of the case is only for Part gas permeable, the gas permeable parts made of sintered material, which a drying gas can only flow through to a small extent.
- the high delicacy the pores of the soil material are necessary for the conditioning of powdered sugar. Therefore, no strong airflow can be generated inside the housing, so that not all areas inside the housing can be reached by the air flow.
- the conditioning device thus has the disadvantage that a strong flow of the medium to be dried is not possible and that with the drying gas flow entrained dust particles are deflected in the upper area of the housing, until they reach the filter in the gas exhaust. This creates a significant one Pressure drop outside the material bed, which is a highly effective drying of the material prevented.
- a drying device with an air filter in which Dried goods are conveyed into a drying room via a conveyor mechanism is where the material to be dried comes to rest.
- the drying room is up limited by a gas-permeable plate that is round. Laterally over a nozzle of drying gas is blown or sucked into the drying room. A large number of filters are provided above the gas-permeable plate; Remove dust particles from the drying gas. Because the drying gas is on the side is blown into the drying room through a nozzle, that is The material to be dried does not have the same pressure at all points. It is also Material to be dried is not evenly distributed in the drying room because there is no mixer is provided. A special spatial allocation of the filters for the pressure distribution of the gas escaping from the drying chamber does not occur. A highly effective one It is therefore not possible to dry the material to be dried.
- an apparatus for drying explosives is known.
- a moist material to be dried is placed on a fluidized bed in an elongated, closed housing transported.
- a drying gas is passed through gas inlet openings blown in and escaping through gas outlet openings. Both openings are above the items to be dried.
- the drying gas only circulates above the items to be dried and does not penetrate them.
- the gas inlet and - outlet openings are arranged alternately side by side. A highly effective one The items to be dried are not dried.
- the invention has for its object a mixer-dryer Generic type so that on the one hand a good mixture and on the other hand achieves a highly effective drying of the material becomes.
- the mixer-dryer shown in the drawing has one in principle cylindrical housing 1 with a horizontal central longitudinal axis 2.
- the housing 1 is closed at its end faces with end walls 6, 7.
- the housing 1 is on supports 8, 9 opposite a floor foundation 10 supported.
- Shaft bearings 11, 12 are attached to the end walls 6, 7, in which one arranged concentrically to the central longitudinal axis 2 Shaft 13 of a mixer 14 is rotatably mounted.
- the mixer 14 is can be driven in rotation about the axis 2 by means of a motor 15 which is connected via a V-belt drive 16 is coupled to the shaft 13.
- a material feed nozzle 18, which is on top of the housing 1 is appropriate.
- the housing 1 opens from the interior 17 a material outlet nozzle 19th
- Numerous mixing tools are located on the shaft 13 of the mixer 14 20, each consisting essentially of a in the region of the inner wall 21st of the housing 1 mixing blade 22 and one with the Shaft 13 connecting rod 23 exist.
- the mixing blades 22 are relatively large and in the axial conveying direction 24 and in the direction of rotation 25 of the shaft 13 employed so that they through the feed pipe 18 supplied pourable material 26 in the direction of rotation 25 and Take along or promote in conveying direction 24.
- In the area of the end walls 6, 7 are attached to the shaft 13 scraper tools 27, 28 by means of of which material 26 adhering to the end walls 6, 7 is stripped off becomes.
- the mixing blades 22 overlap each other in the direction of the Axis 2 completely, so that all peripheral areas of the inner wall 21st can be swept by the mixing blades 22, whereby the formation of Dead dreams is excluded.
- the mixer-dryer is a continuously operating push or Throwing mixer in which the material 26 by means of the mixing blades 22 each shifted in the mixed material bed or torn out of it and in a parabolic lane back into the mix bed falls behind.
- Such push or throw mixers are with 0.5 to 10 times critical speed driven. Under the critical speed is understood the speed of the mixer 14 at which the radial outer ends of the mixing blades 22 gravitational acceleration occurs.
- the outside Drying gas supply chambers 34, 35 attached, which - as Fig. 1 can be removed is - each over almost half the length of the housing 1 extend, namely from its end wall 6, the material feed nozzle 18 faces up to the material outlet port 19.
- This Drying gas supply chambers 34, 35 are via perforated plates 36, 37 with the Interior 17 of the housing 1 connected.
- the perforated plates 36, 37 are partially cylindrical formed and adapted to the inner wall 21 of the housing 1. As can be seen in FIG. 2, they extend approximately symmetrically to vertical center-symmetry plane 38 of the housing 1 by 30 ° each.
- the Compressed gas supply boxes 34, 35 have on their perforated plates 36 and 37, respectively opposite side each have a drying gas connection 39, 40, to which a compressed gas supply line, not shown, can be connected, can be supplied by the compressed gas according to the flow direction arrow 41 is.
- a box-shaped structure 43 is attached to the top 42 of the housing 1, which - in the conveying direction 24 - from the material feed connector 18 extends to the rear end wall 7 of the housing 1.
- a filter box 44 is placed in which - in Conveying direction 24 one behind the other - several cylindrical filters 45 arranged are to a drying gas extraction box placed on the filter box 44 46 are connected.
- the drying gas exhaust box 46 opens into a drying gas vent 47, through the compressed gas flows out in the outflow direction 48.
- disagglomeration devices can be used in a known manner 49 in the form of so-called knife mills, which are provided in essentially from an attached to the outside of the housing 1 Motor 50 and a lead into the interior 17 of the housing 1, from the motor 50 high-speed shaft 51 exist on the Knives 52 are attached, by means of which material packings, so-called agglomerates can be crushed.
- Material 26 is moist and should be dried while mixing will.
- the compressed gas supply boxes 34, 35 and the perforated plates 36, 37 optionally heated drying gas supplied flows through the mixer 14 loosened material bed 26, and over its full length from the end wall 6 to the overflow weir 30.
- the drying gas moistened with the moisture of the material 26 occurs in approximately the full length of the housing 1 Filter box 44, where the entrained by the drying gas Material 26 is separated by the filter 45. Passes through the filter 45 only the drying gas loaded with moisture.
- perforated plates 36, 37 can be of different sizes. Farther the width of a perforated base 36 can vary over the length of the housing 1 change, for example, such a perforated bottom 36, 37 can be trapezoidal be trained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Description
- Fig. 1
- einen Mischer-Trockner im Längsschnitt in schematischer Darstellung und
- Fig. 2
- einen Querschnitt durch den Mischer-Trockner gemäß der Schnittlinie II-II in Fig. 1.
Claims (7)
- Mischer-Trockner mit einem ortsfesten, grundsätzlich zylindrischen Gehäuse (1), in dem ein um seine Mittel-Längs-Achse kontinuierlich drehantreibbares Mischwerk (14) angeordnet ist, das bezogen auf die Mittel-Längs-Achse an einem Ende mit einem Material-Zuführstutzen (18) und am in Förderrichtung (24) entgegengesetzten Ende bezogen auf die Mittel-Längs-Achse mit einem Material-Auslaßstutzen (19) versehen ist, das in seinem Innenraum (17) ein Bett aus zu trocknendem Material (26) aufnimmt, das in seinem Bodenbereich (33) mit mindestens einer, sich über einen wesentlichen Teil der Länge des Gehäuses (1) erstreckenden Trocknungsgas-Zuführkammer (34, 35) versehen ist, die an einen Trocknungsgas-Anschluß (39, 40) angeschlossen und über einen gasdurchlässigen Boden (36, 37) mit dem Innenraum (17) des Gehäuses (1) verbunden ist, und das im Bereich seiner Oberseite (42) mit einem Gas-Abzug versehen ist, dadurch gekennzeichnet, daß der Gas-Abzug als sich mindestens über einen wesentlichen Teil der Länge des Gehäuses (1) in Richtung der Mittel-Längs-Achse erstreckender und mit dessen Innenraum (17) verbundener, etwa quaderförmiger Filterkasten (44) ausgebildet ist, in dem über die Länge des Gehäuses (1) hintereinander mehrere Filter (45) angeordnet sind, die an einen Trocknungsgas-Abzug (47) angeschlossen sind.
- Mischer-Trockner nach Anspruch 1, dadurch gekennzeichnet, daß die Filter (45) langgestreckt ausgebildet und etwa vertikal und quer zur Mittel-Längs-Achse (2) des Mischwerks (14) angeordnet sind.
- Mischer-Trockner nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß er als Schub- oder Wurf-Mischer ausgebildet ist.
- Mischer-Trockner nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß mehrere Trocknungsgas-Zuführkammern (34, 35) in Förderrichtung (24) hintereinander vorgesehen sind.
- Mischer-Trockner nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die mindestens eine Trocknungsgas-Zuführkammer (34, 35) über einen als Lochboden ausgebildeten Boden (36, 37) mit dem Innenraum (17) des Gehäuses (1) verbunden ist.
- Mischer-Trockner nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß mindestens eine Desagglomeriereinrichtung (49) vorgesehen ist.
- Mischer-Trockner nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der als mindestens ein Lochboden (36, 37) ausgebildete gasdurchlässige Boden sich über 40° bis 90° erstreckt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9302136U | 1993-02-15 | ||
DE9302136U DE9302136U1 (de) | 1993-02-15 | 1993-02-15 | Mischer-Trockner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0611937A1 EP0611937A1 (de) | 1994-08-24 |
EP0611937B1 true EP0611937B1 (de) | 1998-10-14 |
Family
ID=6889417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93120513A Expired - Lifetime EP0611937B1 (de) | 1993-02-15 | 1993-12-20 | Mischer-Trockner |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0611937B1 (de) |
DE (2) | DE9302136U1 (de) |
ES (1) | ES2123610T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7132564B2 (en) | 2004-10-07 | 2006-11-07 | Bayer Materialscience Ag | Process for preparing cyclic ketones |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2712076B1 (fr) * | 1993-11-04 | 1996-01-26 | Gwozdz Eugene | Séchoir pour produits humides, notamment de boues de station d'épuration. |
NO322684B1 (no) * | 2001-05-16 | 2006-11-27 | Stord Bartz As | Fremgangsmate og anordning for torke av limholdige materialer |
ES2192980B2 (es) * | 2002-01-16 | 2006-06-01 | Baucis, S.A. | Mezcladora-secadora-reactor por microondas. |
ATE346273T1 (de) * | 2002-10-04 | 2006-12-15 | Edwin Eisenegger | Vorrichtung zum behandeln von schüttgut |
NO339253B1 (no) * | 2013-05-22 | 2016-11-21 | Multivector As | Fremgangsmåte og system for behandling av minst ett stoff til et tørket, fragmentert, virvlet sluttprodukt |
JP6463738B2 (ja) | 2013-05-22 | 2019-02-06 | ウェイスター・アーエス | 少なくとも一つの物質を、乾燥、破砕、流動化状態とされた最終生成物へと処理するための方法、システムおよびデバイス |
NO339254B1 (no) * | 2013-05-22 | 2016-11-21 | Multivector As | Anordning for virvling og tørking av minst ett fragmentert stoff |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE174842C (de) * | ||||
DE125361C (de) * | 1899-10-20 | 1901-11-23 | ||
US1642469A (en) * | 1926-07-13 | 1927-09-13 | Compton J Tucker | Apparatus for drying hay or other products |
US2639515A (en) * | 1948-12-16 | 1953-05-26 | Ruth Rand Simon | Drier and method |
US3456357A (en) * | 1968-02-05 | 1969-07-22 | Commercial Solvents Corp | Process for continuous automated vibrational drying of explosives and apparatus |
HU184671B (en) * | 1979-03-21 | 1984-09-28 | Richter Gedeon Vegyeszet | Apparatus for drying and granulating wet pastelike and/or fusible materials |
DE3024710C2 (de) * | 1980-06-30 | 1982-06-09 | Helmut 4740 Oelde Haupt | Trockner für rieselfähige Güter |
IT8221133V0 (it) * | 1982-03-15 | 1982-03-15 | Essiccatoi S P A Caleppio Di S | Gruppo essiccatoio-filtro con dispositivo per la pulitura dei filtri. |
JPS58168880A (ja) * | 1982-03-30 | 1983-10-05 | 株式会社栗本鉄工所 | 伝導受熱型撹拌乾燥機 |
DE4002099A1 (de) * | 1990-01-25 | 1991-08-01 | Draiswerke Gmbh | Mischer |
DE9106640U1 (de) * | 1991-05-30 | 1991-07-18 | Dietrich Reimelt KG, 6074 Rödermark | Vorrichtung zum Konditionieren von pulverförmigem Schüttgut |
-
1993
- 1993-02-15 DE DE9302136U patent/DE9302136U1/de not_active Expired - Lifetime
- 1993-12-20 EP EP93120513A patent/EP0611937B1/de not_active Expired - Lifetime
- 1993-12-20 ES ES93120513T patent/ES2123610T3/es not_active Expired - Lifetime
- 1993-12-20 DE DE59309062T patent/DE59309062D1/de not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7132564B2 (en) | 2004-10-07 | 2006-11-07 | Bayer Materialscience Ag | Process for preparing cyclic ketones |
Also Published As
Publication number | Publication date |
---|---|
DE9302136U1 (de) | 1993-04-01 |
DE59309062D1 (de) | 1998-11-19 |
EP0611937A1 (de) | 1994-08-24 |
ES2123610T3 (es) | 1999-01-16 |
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