SE180309C1

SE180309C1 -

Info

Publication number: SE180309C1
Authority: SE
Publication date: 1962-01-01

Description

Uppfinnare: B E Lofgren Foreliggande uppfinning avser en anordning for pneumatisk transport av kornformigt material for thinning av silos och liknande behallare. Inventor: B E Lofgren The present invention relates to a device for pneumatic transport of granular material for thinning silos and similar containers.

For att vid transport av kornformigt material komma ifran de vid vanlig pneumatisk transport erforderliga stora luftmangderna och relativt grova transporiledningarna har man pa senare lid f8r dylik transport b6rjat tillampa den s. k. fluidiseringsmetoden. Materialet inmatas darvid i en sluten behallare, vilken vid botten tillfores luft av relativt hOgt tryck, under vars inverkan materialmassan fluidiseras, dvs. bringas att upptrada som en vatska. Genom det uppkomna tryeket kan materialet fas att som en vatska flyta genom en rorledning av mycket klen dimension och salunda pa ett fordelaktigt satt transporteras till onskad plats. Anvandandet av en dylik transportmetod for t. ex. spannmal vid thinning av silos och dylika stone behallare skulle ur flera synpunkter vara fOrdelaktigt, men metoden bur pa grund av praktiska svarigheter hittills ej kunnat tillampas. Dylika behallare av konventionellt utfOrande tala namligen ej det hoga tryck, som maste bibringas den tillforda luften f8r att massan skall fluidiseras, och en forstarkning av behallarna — dar en sadan yore mOjlig — skulle bli alltfor kostsam. Ett intermittent averfkande av silons materialinnehall till en mindre, f8r tryck konstruerad behallare, skulle betyda en extra arbetsoperation, som eliminerade transportsystemets fordelar, och vanligtvis finns ej heller erforderligt utrymme for dylika extra anordningar. Uppfinningen avser att majliggara utnyttjandet av denna nya transportmetod aven vid anlaggningar av ovan namnt slag. In order to get away from the large amounts of air required in normal pneumatic transport and relatively coarse transport lines during the transport of granular material, the so-called fluidisation method has begun to be applied at a later stage for such transport. The material is then fed into a closed container, which at the bottom is supplied with air of relatively high pressure, under the influence of which the mass of material is fluidized, i.e. made to act like a liquid. Due to the pressure created, the material can be phased as a liquid through a pipeline of very small dimension and thus transported in an advantageous manner to the desired location. The use of such a transport method for e.g. grain when thinning silos and similar stone containers would be advantageous from several points of view, but the method should not be able to be applied so far due to practical similarities. Such containers of conventional design do not speak of the high pressure which must be applied to the supplied air in order for the mass to be fluidized, and a reinforcement of the containers - where such a yore is possible - would be too costly. An intermittent transfer of the material content of the silo to a smaller, pressure-constructed container would mean an additional work operation, which eliminated the advantages of the transport system, and usually there is also no required space for such additional devices. The invention is intended to facilitate the utilization of this new transport method even in plants of the type mentioned above.

Anordningen enligt uppfinningen bestar av en under behallarna anordnad transportledning med vilken behallarnas avstangbara bottenutlopp Oro forbundna direkt eller forme-deist en kort stortledning och vilken pa kant satt ãr ansluten till en apparat for materia lets avskiljning samt star i forbindelse med ett organ for tillfarsel av ett gasformigt trans-p ortmedium. The device according to the invention consists of a transport line arranged under the containers with which the releasable bottom outlet of the containers is connected directly or formed by a short main line and which on the edge is connected to an apparatus for separating the material and is connected to a means for supplying a gaseous transport medium.

Det for anordningen kannetecknande är, att transportmediet tillfores transportledningen genom avstangbara grenledningar frau en parallellt med transportledningen forlopande fordelningsledning, samt att namnda grenledningar aro anordnade mitt for vane materialintagsoppning och aro anslutna till transportledningens undersida med mynningen i transportledningen tackt av en luftgenomslapplig platta, varigenom det tillforda transportmediet finfordelas och astadkommer en fluidise-ring av det i transportledningen nedrinnande materialet. What is characteristic of the device is that the transport medium is supplied to the transport line through detachable branch lines from a distribution line running parallel to the transport line, and that said branch lines are arranged in the middle of the usual material intake opening and are connected to the underside of the transport line. the transport medium is finely divided and provides a fluidization of the material flowing into the transport line.

Anordningen kan — t. ex. dar tillgangligt utrynune i hoj died ãr begransat — med for-del utforas sh, att transport- och fordelningsledningarna aro anordnade i samma horisontalplan och genom oppningar i ledningarnas botten via namnda grenledningar kommunisera med varandra samt att avstangningsorganet for varje grenledning utgores av en Over grenledningens mynning i tillforselledningen anordnad, stallbar spjallplatta. The device can - e.g. where available utrynune in hoj died is limited - with the advantage is performed sh, that the transport and distribution lines are arranged in the same horizontal plane and through openings in the bottom of the lines via said branch lines communicate with each other and that the shut-off means for each branch line consists of an Over branch line mouth arranged, adjustable damper plate arranged in the supply line.

Anordningen skall nu narmare beskrivas i anslutning till bifogad ritning, som visar en exemplifierande utforingsform av uppfinningen och dar fig. 1 visar en sammanstallning av anordningen och fig. 2 visar i detalj ett tvarsnitt genom i sand-ma horisontalplan anbragta ()eh parallellt farlopande transport- och fordelningsledningar, fig. 3 visar ett langdsnitt genom transportledningen i fig. 2. The device will now be described in more detail in connection with the accompanying drawing, which shows an exemplary embodiment of the invention and where Fig. 1 shows an assembly of the device and Fig. 2 shows in detail a cross-section through () parallel horizontal transport () and distribution lines, Fig. 3 shows a longitudinal section through the transport line in Fig. 2.

I figurerna betecknar 1 ett natal behallare (silos), vilkas bottenutlopp 2 aro anslutna till med avstangningsspj all 3 forsedda intagsiippningar 4 pa en transportledning 5. Transportledningen är ansluten till en apparat 6 av kEnt utforande for godsets avskiljning. Mitt f8r vane intagsoppning 4 är transportledningen 2— — medelst med spjall 7 farsedda grenledningar 8 forbunden med en fordelningsledning 9, ansluten till ett organ 10 (flat) f8r tillforsel av ett gasformigt transportmedium. Over grenledningarnas mynning i transportledningen ar anbragt en luftgenomslapplig platta 11, som i det visade fallet utgares av en perforerad plat, men som beroende pa materialets kornstorlek kan utgaras av en natduk, flit el. dyl. Genom namnda platta fordelas det inblasta transportmediet genom det i transportledningen nedrusande materialet 12, som darvid fluidiseras. For att mojliggora eventuellt erforderlig rensning forses saval transportsom fOrdelningsledningarnas fria andar med lostagbara gavelplatar 13, °eh for renblasning av transportledningen forbindes denna lampligen med fordelningsledningen genom en extra, spjallforsedd grenledning 14. In the figures, 1 denotes a natal container (silos), the bottom outlets 2 of which are connected to all 3 inlet openings 4 provided on a transport line by means of a shut-off valve 5. The transport line is connected to an apparatus 6 of a certain design for separating the goods. In my usual intake opening 4, the transport line 2 is connected by means of dampers 7 farmed branch lines 8 to a distribution line 9, connected to a member 10 (flat) for supplying a gaseous transport medium. An air-permeable plate 11 is arranged above the mouth of the branch lines in the transport line, which in the case shown is made of a perforated plate, but which, depending on the grain size of the material, can be made of a night cloth, fleece or the like. dyl. Through said plate, the blown-in transport medium is distributed through the material 12 which rushes into the transport line, which is thereby fluidized. In order to make possible any necessary cleaning, both free spirits of the distribution lines are provided with detachable end plates 13, and for blowing the transport line this is suitably connected to the distribution line through an additional, spliced branch line 14.

De i anordningen ingaende detaljernas konstruktiva utformning och detaljernas in-hordes placering kan varieras utan frangaende av uppfinningens ide. The constructive design of the details included in the device and the location of the details included can be varied without departing from the idea of the invention.

Claims

Pafentan speech:

Device for the pneumatic transport of granular material for the extraction of silos and similar containers, the releasable bottom outlets of which are directly or by means of a short starting line connected to a transport line arranged below the containers, which is connected at the edge to an apparatus for separating the material and in connection with a means for supplying a gaseous transport medium, characterized in that the transport medium -Mores transport line through detachable branch lines from a distribution line running parallel to the transport line, and that said branch lines are arranged in the middle of each material intake opening and are connected to the bottom of the transport line. the transport line thanks to an air-permeable plate, whereby the supplied transport medium is comminuted and provides a fluidization of the material flowing into the transport line.

Device according to claim 1, characterized in that the transport and distribution lines are arranged in the same horizontal plane and through, openings in the bottom of the lines via the said branch lines communicate with each other and that the shut-off means for each branch line is provided by a branch of the branch line in the supply line. , adjustable tablet. Anfarda Publications: Patent Papers in France 584 261; Germany 620 572; USA 2 192 287. Stockholm 1962. hungl. Boktr. P. A. Norstedt & Soner. 620089