DE533305C - Device for conveying dust-like bulk goods by means of compressed air - Google Patents

Device for conveying dust-like bulk goods by means of compressed air

Info

Publication number
DE533305C
DE533305C DEP59796D DEP0059796D DE533305C DE 533305 C DE533305 C DE 533305C DE P59796 D DEP59796 D DE P59796D DE P0059796 D DEP0059796 D DE P0059796D DE 533305 C DE533305 C DE 533305C
Authority
DE
Germany
Prior art keywords
compressed air
bulk goods
nozzle
cross
dust
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
Application number
DEP59796D
Other languages
German (de)
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Polysius AG
Publication date
Priority to DEP59796D priority Critical patent/DE533305C/en
Application granted granted Critical
Publication of DE533305C publication Critical patent/DE533305C/en
Expired 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
    • 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
    • B65G2812/00Indexing codes relating to the kind or type of conveyors
    • B65G2812/16Pneumatic conveyors
    • B65G2812/1608Pneumatic conveyors for bulk material
    • B65G2812/1616Common means for pneumatic conveyors
    • B65G2812/1625Feeding or discharging means
    • B65G2812/1633Feeding or discharging means using Venturi effect

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Jet Pumps And Other Pumps (AREA)

Description

Vorrichtung zur Förderung von staubförmigem Massengut mittels Preßluft Es ist bekannt, daß, ein Gemisch aus staubförmigen Körpern und strömenden Gasen, wie z. B. Druckluft, in bestimmten Mengenverhältnissen die physikalischen Eigenschaften einer Flüssigkeit annimmt, d. h. ein so großes Maß an Beweglichkeit der einzelnen Staubteilchen erhält, daß sich dieses Gemisch wie eine Flüssigkeit, z. B. durch die Wirkung eines aus einer Luftdüse ausströmenden ur@d sich in einem Ausdehnungsrohr von geeigneter (sich erweiternder) Form ausdehnenden Luftstrahles, ansaugen läßt.Device for conveying powdery bulk goods by means of compressed air It is known that a mixture of dust-like bodies and flowing gases, such as B. compressed air, the physical properties in certain proportions accepts a liquid, d. H. such a great degree of mobility of the individual Dust particles get that this mixture like a liquid, z. B. by the effect of a ur @ d flowing out of an air nozzle itself in an expansion pipe of a suitable (expanding) form of expanding air jet, can be sucked in.

Die vorliegende Erfindung will nun die Förderung von staubförmigem Gut mittels Preßluft dadurch erleichtern, daß in der Förderleitung mehrere Luftzuführungsdüsen nacheinander angeordnet sind. Es ist ferner bereits bekannt geworden, derartige Luftzuführungsdüsen mehrfach hintereinander _ anzuordnen, um auf diese Weise die Förderung desbetfeffenden Gutes, sei es staubförmig, sei es flüssig, über längere Strecken zu !ermöglichen. Der Querschnitt der Förderleitung hatte aber jeweils an der betreffenden Düsenmündung stets den gleichen Durchmesser, so daß, der mit Gut beladene Preßluftstrom beim Austritt aus der Düse stets nur -einen dem übrige, -Querschnitt der Förderleitung gegenüber nicht veränderten Querschnitt vorfand. Es hat sich nun aber gezeigt, und Versuche haben esi bestätigt, daß eine Förderleitung, die an der Stelle, wo die Düse angeordnet ist, einen gleichbleibenden Querschnitt aufweist, insofern erhebliche Nachteile hat, als der mit Gut beladene Prelluftstrom an dieser Stelle eine Hemmung oder Stauung erfährt, wodurch sich der in der Leitung auftretende Überdruck verstärkt und sich auch ungünstig nach rückwärts fortpflanzt. Erfindungsgemäß erhält der Förderleitungsquerschnitt gerade an der Stelle, wo jedesmal die Düse liegt, :eine allmähliche Erweiterung, dann wirkt einmal der in. dem erweiterten Teil aus der Düse ausströmende Luftstrom gerade durch die sich erweiternde Form des Konus nach den bekannten physikalischen Gesetzen saugend, so daß, dadurch auch .eine höhere Leistung erreicht wird. Außerdem kann eine Stauung, wie sie bei enger werdendem Querschnitt unbedingt eintritt, infolge des in der Förderleitung sich an der Düsenmündung allmählich erweiternden Rohrquerschnittes nicht eintreten, und auch eine Vergrößerung des Rückdruckes wird vermieden. Die auf das Staubluftgemisch einwirkenden Saug- und Druckkräfte und die dadurch dem Staubluftgemisch erteilten Beschleunigungen addieren sich durch Hintereinanderschaltung mehrerer Düsen, so da.ß dieses Staubluftgemisch nunmehr durch eine Leitung von erheblich größerem Widerstand, z. B. doppelter Länge, gefördert werden kann.The present invention now seeks the promotion of dusty Make it easier by means of compressed air by having several air supply nozzles in the delivery line are arranged one after the other. It is also already known such To arrange air supply nozzles several times one behind the other in order to achieve the Conveyance of the affected material, be it in powder form, be it in liquid form, over a longer period of time To stretch! However, the cross-section of the delivery line was always on the nozzle orifice in question always has the same diameter, so that the one with good loaded compressed air flow when exiting the nozzle always only -one of the rest, -cross-section the cross-section of the delivery line did not change. It has now but it has been shown and tests have confirmed that a delivery line connected to the Point where the nozzle is arranged has a constant cross-section, to the extent that it has considerable disadvantages, as the bounce air flow loaded with good on this Body experiences an obstruction or congestion, which causes the occurring in the line Overpressure intensifies and also propagates unfavorably backwards. According to the invention the cross-section of the conveying line is maintained at the point where the nozzle is lies,: a gradual expansion, then the in. the expanded one acts Part of the airflow flowing out of the nozzle straight through the expanding shape of the cone sucking according to the known physical laws, so that, thereby, too .a higher performance is achieved. It can also cause a congestion, as in the case of tighter The cross-section that is becoming necessary occurs as a result of the in the conveying line itself gradually widening pipe cross-section do not occur at the nozzle mouth, and an increase in the back pressure is also avoided. The one on the dust air mixture acting suction and pressure forces and the resulting dust air mixture Accelerations add up when several nozzles are connected in series, see above that this dust-air mixture now passes through a line of considerably greater resistance, z. B. double length, can be promoted.

Die beiliegende Zeichnung veranschaulicht eine Ausführungsform der Erfindung. Zwischen dem Saugtrichter a und der Förderleitung d sind mehrere Düsen cl, c.., c., und c1 angeordnet. Diese Düsen werden von konisch verlaufenden Rohrteilen umschlossen. Die einzelnen Rohrteile sind dabei so angeordnet, daß die Düse j@edesmal im !Mittelpunkt des kleinsten Querschnittes dieses Konus liegt, so daß das aus der Düse ausströmende S'taubluftgemisch in einen jerweiterten Querschnitt strömt, der sich alsdann bis zur .n;ächstfolgenden Düse wieder verengt.The accompanying drawing illustrates an embodiment of the Invention. There are several nozzles between the suction funnel a and the delivery line d cl, c .., c., and c1 arranged. These nozzles are made of conical pipe sections enclosed. The individual pipe parts are arranged in such a way that the nozzle is opened every time in the center of the smallest cross-section of this cone lies, so that from the The exhaust air mixture flowing out from the nozzle flows into a widened cross-section which then narrows again to the next nozzle.

Claims (1)

PATENTANSPRUCFI: Vorrichtung zur Förderung von staubförmigem Massengut mittels Preßduft mit mehreren hintereinander angeordneten Düsen, dadurch gekehnzeichnet, daß die Querschnitte der Rohrleitung, durch die das Staubluftgemisch gefördert wird, zwischen je zwei Düsenmündungen in ihrem Durchmesser stetig wachsen und wieder abnehmen.PATENT APPLICATION: Device for conveying powdery bulk goods by means of compressed air with several nozzles arranged one behind the other, marked thereby, that the cross-sections of the pipeline through which the dust-air mixture is conveyed, between every two nozzle mouths steadily grow in diameter and then decrease again.
DEP59796D Device for conveying dust-like bulk goods by means of compressed air Expired DE533305C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP59796D DE533305C (en) Device for conveying dust-like bulk goods by means of compressed air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP59796D DE533305C (en) Device for conveying dust-like bulk goods by means of compressed air

Publications (1)

Publication Number Publication Date
DE533305C true DE533305C (en) 1931-09-11

Family

ID=7389288

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP59796D Expired DE533305C (en) Device for conveying dust-like bulk goods by means of compressed air

Country Status (1)

Country Link
DE (1) DE533305C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE752358C (en) * 1942-02-19 1954-10-25 Georg Dipl-Ing Zimmermann Device for producing and conveying a dust-air mixture with the help of several compressed air nozzles lined up in a pipe socket

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE752358C (en) * 1942-02-19 1954-10-25 Georg Dipl-Ing Zimmermann Device for producing and conveying a dust-air mixture with the help of several compressed air nozzles lined up in a pipe socket

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