DE1269571B - Double-walled pipeline intended for the pneumatic conveying of sticky bulk material or bulk material with a tendency to stick - Google Patents

Double-walled pipeline intended for the pneumatic conveying of sticky bulk material or bulk material with a tendency to stick

Info

Publication number
DE1269571B
DE1269571B DEP1269A DE1269571A DE1269571B DE 1269571 B DE1269571 B DE 1269571B DE P1269 A DEP1269 A DE P1269A DE 1269571 A DE1269571 A DE 1269571A DE 1269571 B DE1269571 B DE 1269571B
Authority
DE
Germany
Prior art keywords
bulk material
sticky
stick
tendency
double
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.)
Pending
Application number
DEP1269A
Other languages
German (de)
Inventor
Franz Waeschle
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.)
Waeschle Maschinenfabrik GmbH
Original Assignee
Waeschle Maschinenfabrik GmbH
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 Waeschle Maschinenfabrik GmbH filed Critical Waeschle Maschinenfabrik GmbH
Priority to DEP1269A priority Critical patent/DE1269571B/en
Publication of DE1269571B publication Critical patent/DE1269571B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/52Adaptations of pipes or tubes
    • B65G53/521Adaptations of pipes or tubes means for preventing the accumulation or for removal of deposits

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Transport Of Granular Materials (AREA)

Description

Zum pneumatischen Fördern von klebrigem oder zum Anbacken neigendem Schüttgut bestimmte doppelwandige Rohrleitung Es ist bereits vor Jahren eine doppelwandige Rohrleitung zum Fördern von Ruß oder ähnlichem klebrigem oder zum Anbacken neigendem Schüttgut bekanntgeworden, bei der das innere, der Förderung dienende Rohr dehnbar und das äußere Rohr starr ausgeführt ist. Die Rohrleitung als Ganzes ist dort aus einzelnen Abschnitten mit durchlaufendem innerem Förderrohrstrang und entsprechend den Abschnitten voneinander abgeteilten hohlzylindrischen äußeren Kammer gebildet. Eine parallellaufende Druckleitung und eine ebensolche Abluftleitung sind an die einzelnen Kammern angeschlossen. Durch intermittierende Luftzufuhr in der Druckleitung werden in der Rohrleitung Druckschwankungen zwi schen innen und außen erzeugt und dadurch das dehnbare Förderrohr zum Atmen gebracht. Dadurch sollen Ablagerungen des Fördergutes vermieden oder bereits im Rohrinnern erfolgte Ansätze desselben wieder abgelöst werden.For the pneumatic conveying of sticky or sticky items Bulk material specific double-walled pipeline It was already a double-walled pipeline years ago Pipeline for conveying soot or the like that is sticky or prone to sticking Bulk material has become known, in which the inner tube serving for conveyance is expandable and the outer tube is made rigid. The pipeline as a whole is out there individual sections with continuous inner conveyor pipe string and accordingly the sections divided from one another hollow cylindrical outer chamber formed. A pressure line running in parallel and an exhaust air line of this type are connected to the connected to individual chambers. By intermittent air supply in the pressure line pressure fluctuations between inside and outside are generated in the pipeline and this made the expandable delivery tube breathe. This should make deposits of the conveyed material is avoided or approaches of the same have already occurred inside the pipe to be replaced again.

Bei besonders klebrigem oder zum Anbacken neigendem Schüttgut, wie z. B. bei aufgefetteten Milchpulvern (oder anderen Fettkonzentraten), reicht die durch die Druckschwankungen erzeugte Vibration der Wandung des inneren dehnbaren Rohres nicht immer aus, um ein Anhaften des Gutes zu verhindern. For particularly sticky bulk goods or those with a tendency to stick, such as z. B. with fat milk powders (or other fat concentrates), that is enough Vibration of the wall of the inner expandable generated by the pressure fluctuations Do not always pipe out to prevent the goods from sticking.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Anhaften des Fördergutes bei derartigen doppelwandigen Rohrleitungen auch in schwierigen Fällen zu vermeiden. The invention is therefore based on the task of preventing the Material to be conveyed with such double-walled pipelines even in difficult cases to avoid.

Für eine zum pneumatischen Fördern von klebrigem oder zum Anbacken neigendem Schüttgut bestimmte doppelwandige Rohrleitung, bei der das innere dehnbare Rohr mit einem Zwischenraum von einem gegebenenfalls flexiblen Mantel umgeben ist, wobei dem Zwischenraum zur Erzeugung von wechselnden Druckdifferenzen zwischen innen und außen Druckluft intermittierend zugeführt wird, ist die erfindungsgemäße Ausbildung darin zu sehen, daß das innere dehnbare Rohr in an sich bekannter Weise porös ist, derart, daß wenigstens ein Teil der in den Zwischenraum eintretenden Luft zur Fluidisierung des Fördergutes in das innere Rohr durchtreten kann. For one for the pneumatic conveying of sticky or sticky items inclined bulk material certain double-walled pipeline, in which the inner stretchable The pipe is surrounded by a possibly flexible jacket with a space in between, wherein the interspace for generating alternating pressure differences between the inside and compressed air is supplied intermittently outside, is the embodiment according to the invention to see that the inner expandable tube is porous in a manner known per se, such that at least part of the air entering the space is for fluidization the conveyed material can pass into the inner tube.

In der Zeichnung ist ein Ausführungsbeispiel der Ausbildung gemäß der Erfindung dargestellt, und zwar zeigt F i g. 1 einen Längsschnitt durch einen Leitungsabschnitt, F i g. 2 eine schematische Darstellung eines längeren Rohrleitungsteils in kleinerem Maßstab. In the drawing, an embodiment of the training is according to of the invention, namely FIG. 1 shows a longitudinal section through a Line section, FIG. 2 a schematic representation of a longer pipeline part on a smaller scale.

Das innere Rohrl ist aus elastisch dehnbarem, porösem Werkstoff. Es ist mit ZwischenraumZ in einem äußeren Mantelrohr 2 gehalten, welches z. B. aus einem mit einer Drahtwendel armierten Schlauch besteht. Die einzelnen Rohrleitungsabschnitte sind durch Flansche 3 miteinander verbunden. In jeweils einem der beiden Flansche eines Rohrabschnittes ist eine in den Zwischenraum 7 zwischen den beiden Rohrenl und 2 mündende Bohrung8 angebracht. The inner tube is made of elastically stretchable, porous material. It is held with ZwischenraumZ in an outer jacket tube 2, which z. B. off consists of a hose reinforced with a wire helix. The individual pipe sections are connected to one another by flanges 3. In each of the two flanges of a pipe section is one in the space 7 between the two pipes and 2 opening holes8 attached.

An sie ist jeweils ein Druckfuftrohr 9 angeschlossen.A pressure air pipe 9 is connected to each of them.

Die Druckluftrohre 9 stellen die Verbindung zwischen dem genannten Zwischenraum 7 und einer parallel zur Förderleitung verlaufenden, in Abschnitte geteilten Druckluftleitung 10 her. Diese Druckluftleitung 10 ihrerseits ist über die Leitung 11 mit einer langsam laufenden Kolbenpumpe 12 verbunden.The compressed air pipes 9 provide the connection between the said Intermediate space 7 and a parallel to the conveying line, in sections split compressed air line 10 ago. This compressed air line 10 in turn is over the line 11 is connected to a slowly running piston pump 12.

Die Pumpe 12 schickt in periodischer Folge Druckluftstöße über das System 11,10, 9 in den Zwischenraum Z. Dadurch gerät das innere, elastische Rohr 1 in pulsierende Bewegung. Durch die unmittelbare Erschütterung und durch die als Folge der Querschnittsänderungen bewirkten Geschwindigkeitsschwankungen der Förderluft werden die Ablagerungen von der Rohrwand abgelöst. Zugleich dringt die Luft aus dem Zwischenraum Z durch die Poren des Rohres 1, und das von der Innenfläche des Rohres 1 abgelöste Fördergut wird erneut fließfähig gemacht. The pump 12 sends blasts of compressed air via the periodic sequence System 11,10, 9 in the space Z. This causes the inner, elastic tube 1 in pulsating motion. The immediate shock and the as As a result of the changes in cross-section, fluctuations in the speed of the conveying air were caused the deposits are detached from the pipe wall. At the same time the air escapes the space Z through the pores of the tube 1, and that of the inner surface of the Tube 1 detached conveyed material is made flowable again.

Die vorbeschriebene Belüftungseinrichtung wiederholt sich mehrfach über die Länge der Rohrleitung. The ventilation device described above is repeated several times over the length of the pipeline.

An Stelle des Anschlusses an einzelne Kolbenpumpen könnten die Zwischenräume Z der einzelnen Rohrabschnitte an einen vorhandenen Luftdruckspeicher oder an eine Luftdruckleitung, über nach Bedarf oder Bedienungsvorschrift von Hand zu öffnende und zu schließende Schieber oder Ventile, anschließbar sein. Für den Zwischenraum Z hat sich ein Spalt zwischen den Rohren zwischen 1 und 10 mm als vorteilhaft erwiesen. Instead of being connected to individual piston pumps, the spaces between Z of the individual pipe sections to an existing air pressure accumulator or to a Air pressure line, which can be opened by hand as required or operating instructions and slides or valves to be closed, be connectable. For the gap Z has a gap between the tubes between 1 and 10 mm as proved beneficial.

Claims (1)

Patentanspruch: Zum pneumatischen Fördern von klebrigem oder zum Anbacken neigendem Schüttgut bestimmte doppelwandige Rohrleitung, bei der das innere dehnbare Rohr mit einem Zwischenraum von einem gegebenenfalls flexiblen Mantel umgeben ist, wobei dem Zwischenraum zur Erzeu- gung von wechselnden Druckdifferenzen zwischen innen und außen Druckluft intermittierend zugeführt wird, dadurch gekennzeichnet, daß das innere dehnbare Rohr (1) in an sich bekannter Weise porös ist, derart, daß wenigstens ein Teil der in den Zwischenraum (Z) eintretenden Luft zur Fluidisierung des Fördergutes in das innere Rohr durchtreten kann. Claim: For pneumatic conveying of sticky or to Bulk material with a tendency to stick on certain double-walled pipeline in which the inner expandable tube surrounded with a space by an optionally flexible jacket is, with the gap for generating supply of changing pressure differences between compressed air is supplied intermittently inside and outside, characterized in that that the inner expandable tube (1) is porous in a manner known per se, such that at least part of the air entering the intermediate space (Z) for fluidization the conveyed material can pass into the inner tube. In Betracht gezogene Druckschriften: USA.-Patentschrift Nr. 2478326. References considered: U.S. Patent No. 2478326.
DEP1269A 1966-12-17 1966-12-17 Double-walled pipeline intended for the pneumatic conveying of sticky bulk material or bulk material with a tendency to stick Pending DE1269571B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP1269A DE1269571B (en) 1966-12-17 1966-12-17 Double-walled pipeline intended for the pneumatic conveying of sticky bulk material or bulk material with a tendency to stick

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP1269A DE1269571B (en) 1966-12-17 1966-12-17 Double-walled pipeline intended for the pneumatic conveying of sticky bulk material or bulk material with a tendency to stick

Publications (1)

Publication Number Publication Date
DE1269571B true DE1269571B (en) 1968-05-30

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2337678A1 (en) * 1976-01-08 1977-08-05 Buehler Miag Gmbh DEVICE FOR THE CLEANING OF FLEXIBLE DUCTS INTENDED FOR TRANSPORTING MATERIALS BY PNEUMATIC TRACK
US4834588A (en) * 1987-09-18 1989-05-30 Shell Oil Company Feed line-pulsed gas injection
WO1990007463A1 (en) * 1989-01-04 1990-07-12 Oy Partek Ab Apparatus for pneumatic transportation of a particle material
WO2006064014A1 (en) * 2004-12-17 2006-06-22 Shell Internationale Research Maatschappij B.V. Pipe part for conveying a solid particulate material
EP1911702A1 (en) * 2006-10-11 2008-04-16 Tronox Pigments GmbH Conveyor device and conveyor hose for fine particles
WO2011069588A1 (en) 2009-12-09 2011-06-16 Uhde Gmbh Device for feeding a fluid into a solid-conveying line
EP2810899A1 (en) * 2013-06-04 2014-12-10 Frank Gillengerten Container for liquid media contaminated with solids and method for removing deposits in liquid containers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478326A (en) * 1945-12-17 1949-08-09 Phillips Petroleum Co Pipe-line transportation of fine solids

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478326A (en) * 1945-12-17 1949-08-09 Phillips Petroleum Co Pipe-line transportation of fine solids

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2337678A1 (en) * 1976-01-08 1977-08-05 Buehler Miag Gmbh DEVICE FOR THE CLEANING OF FLEXIBLE DUCTS INTENDED FOR TRANSPORTING MATERIALS BY PNEUMATIC TRACK
US4834588A (en) * 1987-09-18 1989-05-30 Shell Oil Company Feed line-pulsed gas injection
WO1990007463A1 (en) * 1989-01-04 1990-07-12 Oy Partek Ab Apparatus for pneumatic transportation of a particle material
US5163787A (en) * 1989-01-04 1992-11-17 Oy Partek Ab Apparatus for pneumatic transportation of a particle material
CN101080355B (en) * 2004-12-17 2012-04-11 国际壳牌研究有限公司 Pipe part for conveying a solid particulate material
WO2006064014A1 (en) * 2004-12-17 2006-06-22 Shell Internationale Research Maatschappij B.V. Pipe part for conveying a solid particulate material
US8801340B2 (en) 2004-12-17 2014-08-12 Shell Oil Company Pipe part for conveying a solid particulate material
AU2005315606B2 (en) * 2004-12-17 2009-04-30 Air Products And Chemicals, Inc. Pipe part for conveying a solid particulate material
DE102006048112A1 (en) * 2006-10-11 2008-04-17 Tronox Pigments Gmbh Conveying device for finely divided particles
EP1911702A1 (en) * 2006-10-11 2008-04-16 Tronox Pigments GmbH Conveyor device and conveyor hose for fine particles
DE102009057380A1 (en) 2009-12-09 2011-06-16 Uhde Gmbh Device for feeding a fluid into a solids conveying line
WO2011069588A1 (en) 2009-12-09 2011-06-16 Uhde Gmbh Device for feeding a fluid into a solid-conveying line
CN102712426A (en) * 2009-12-09 2012-10-03 蒂森克虏伯伍德有限公司 Device for feeding a fluid into a solid-conveying line
EP2810899A1 (en) * 2013-06-04 2014-12-10 Frank Gillengerten Container for liquid media contaminated with solids and method for removing deposits in liquid containers

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