SE202488C1

SE202488C1 -

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Publication number: SE202488C1
Authority: SE
Publication date: 1965-01-01

Description

Uppfinnare: T Jakobson SVERIGE PATENT PATENTTID FRAN DEN 30 JANUARI 1964 BEVILJAT DEN 12 AUGUST! 1965 PUBLIGERAT DEN 1 MARS 1966 KLASS INTERNATIONELLSVENSK B65 g81e:63 PATENT- O-CH REGISTRERINGSVERKET Vid pneumatisk transport av lattare material, sasom spannmal, sagspan o. dyl., dar lufttrycket endast obetydligt overstiger atmosfarstrycket, kan kontinuerlig inmatning av transportmaterialet i tryckledningen ske utan storre svarigheter. Inventor: T Jakobson SWEDEN PATENT PATENT PERIOD FROM 30 JANUARY 1964 GRANTED ON 12 AUGUST! 1965 PUBLISHED ON MARCH 1, 1966 CLASS INTERNATIONAL SWEDISH B65 g81e: 63 PATENT- O-CH REGISTRATION AGENCY For pneumatic transport of lighter materials, such as grain, sawdust, etc., where the air pressure only slightly exceeds the atmospheric pressure, transport can take place continuously without pressure in the material. greater responsibilities.

Da clet galler transport av vissa tyngre, pulverformiga material, t. ex. cement, varvid lufttryck pa minst 2 ato ,erfordras, ar det forenat med stora problem att kontinuerligt inmata transportmaterialet och samtidigt hindra tryckluften att tranga ut. Da clet grids transport of certain heavier, powdery materials, e.g. cement, whereby an air pressure of at least 2 atoms is required, it is associated with great problems to continuously feed the transport material and at the same time prevent the compressed air from squeezing out.

Vid pneumatisk cementtransport liar man darfor tillampat att via en tryckkammare satsvis slussa in materialet i tryckledningen. Under tryckkammarens fyllningsperiod tillfores tryckledningen ej nagot material, men for att materialproppar ,ej skola bildas i tryckledningen, maste likval tryckluft standigt tillforas tryckledningen, varigenom verkningsgraden blir lagre och foljaktligen kostnaden per transportvolymenhet hogre. In the case of pneumatic cement transport, it is therefore advisable to lock the material into the pressure line via a pressure chamber in batches. During the filling period of the pressure chamber, no pressure line is supplied to the pressure line, but in order for material plugs not to form in the pressure line, equal pressure air must be constantly supplied to the pressure line, whereby the efficiency becomes lower and consequently the cost per transport volume unit higher.

Ovannamnda materialproppar, som latt kunna uppkomma vid tryckfall i transportledningen, ar alltid till stor olagenhet eftersom de —j vale fall da det galler Cement — aro nastan omojliga att biasa ut ur tedningen, Det kan namnas att vii ett tillfdlle en cementpropp pa ungefar en halv meters langd, som bildats i en 4" lednin,g, ej kunde blasas bort trots att tillgangligt lufttryck oyersteg 4 kg/ cm2. Vid kontinuerlig inmatning av materialet i tryckluftledningen bortfaller iii.sken. for proppbildning i ledningen, och man erhaller en mera likformig luft — material — blandning an vid intermittent inmatning. The above-mentioned material plugs, which can easily arise in the event of a pressure drop in the transport line, are always a great inconvenience because they - in certain cases when it comes to Cement - are almost impossible to leak out of the seal. It can be mentioned that in one case a cement plug of about half meters length, which was formed in a 4 "line, g, could not be blown away despite the available air pressure exceeding 4 kg / cm2. With continuous feeding of the material in the compressed air line, the iii.shine for plug formation in the line is lost, and a more uniform air - material - mixture for intermittent feeding.

Vid den s. k., Fuller-pumpen, spin ar. en kontinuerligt arbetande anordning, sker inmatningen medelst en ski, SOM bringas- att rotera i en cylinder, varvid materialet pressas in i tryckledningen _ungefar _som vid _en_ ,4- kvarn. Saval,skruv som cylinder besta av hogklas-sigt sta.l med.stor ythardbet och slipat till noggrann passning.. pet _är _en .olhgenhet att star- effekt .erfordras for att .driva matarskrwr yen. At the so-called, Fuller pump, spin ar. a continuously operating device, the feeding takes place by means of a ski, which is caused to rotate in a cylinder, whereby the material is pressed into the pressure line - roughly _ as at _a_, 4 mill. Saval, screw as cylinder consisting of high-class steel with large surface hardness and ground to a precise fit .. pet _är _en .olhighet att star- effekt .revader for .driva matarskrwr yen.

Fareliggande,uppfinning avser aft undvika denim olagenhet. Anordningen,. som baserar .sig pa att sammanpackad cement _och dylikt material i en rorledning bildar en propp, som utgor en effektiv tatning mot -hoga,lufttryck, bestar av en i .huvudsak vertikal tryckkammare,i vars, ovre del en driven mater- eller kompressionsanordning är roterbart lagrad. Derma mataranordning har _ till uppgift att mata ned materialet frau._ en overliggande be hallare och att.,i kammaren komprimera sa. att _en propp. bildas.. i denim kani.7 mare. Tryckkanunarens nedre, del bar eventuellt en utvidguing, som tjanstgor aom bland7 ningskanunare, I vilken. tryckbuft kan inhidsas _Mr _att läsa .upp materialp_roppens _nedre del.. tinder blandningsk.ammaren finnes en tryckluftkammare ,ansluten tilt transportled, ningen, och denna tryckluftkammare ar ge, nom alt avstangningsorgan .avstangbart frail ndnindapropp.resp.kamrnare, 4 att _tryck7 Innen hindras att rasa ut genonk kammaren: En utforingsforin-,av uppfinnin.gen. visas .i vertikalsektimi pa.lifogade rEn- pa rampligt,genc)m..en motor driven .23aatar-_ .eller konipreSsionsanorduing, exempelyis. ,flgrbladig: propeller ,eller ..skruv._7„ ar roterbart; anbragt.i tivre delenen ka.b. konisk tryckkainniare 2,. vars nedre-_yidare del, ansluter..sjg„till: en, utvid.gad-.bland7, ningskammare 3. Omkring de-nnas nedersta del filmes: -en ringformig tryckluftskammare 2 4 med inlopp 5 och utlopp 6 till en trycklufttransportledning. Ett hojligt membran 7 eller annat avstangningsorgan fir anbragt under blandningskammaren 3 och kan i sitt ovre lage tfita mot ett ringformigt sate 8, sfi. att tryckluften i kammaren 4 utestanges frail till-trade till blandningskammaren 3 och den koniska kammaren 2. Membranets rorelse utf8- res medelst ett pa ldmpligt satt paverkat manoverorgan 9. Blandningskammaren 3 är forsedd med ett antal munstycken 10 for inblasning av tryckluft i lamplig mangd. Alternati-vt kan sadan tryckluft ocksa inforas i centrum genom en karial i manoverorganet 9 och tvarsigenom membranet 7. The present invention seeks to avoid denim maladaptation. The device,. which is based on the fact that packed cement and such material in a pipeline form a plug which constitutes an effective seal against high air pressure, consisting of a substantially vertical pressure chamber, in the upper part of which a driven feed or compression device is rotatably mounted. This feeding device has the task of feeding down the material from an overlying container and compressing it in the chamber. that _a plug. formed .. in denim kani.7 mare. The lower part of the pressure cannon possibly had an extension, which serves as a mixing cannon, in which. Compressed buffer can be accommodated _More _to read .read the lower part of the material body .. The mixing chamber contains a compressed air chamber, connected to the transport line, and this compressed air chamber is provided, by means of all shut-off means, by a resilient frail ndnindapropp.resp.kamrnare, 4 to prevent pressure to collapse through the chamber: An embodiment of the invention. appears .in vertical section pa.lifogade rEn- pa rampligt, genc) m..en motor driven .23aatar-_ .or konipreSsansanorduing, exempelyis. , multi-bladed: propeller, or ..crew_7 „is rotatable; anbragt.i tivre delenen ka.b. conical pressure vessel 2,. the lower part of which is connected to an expansion chamber 3. Around the lower part thereof is filmed: an annular compressed air chamber 24 with inlet 5 and outlet 6 to a compressed air transport line. A hollow membrane 7 or other shut-off member is arranged below the mixing chamber 3 and can in its upper layer fit against an annular sate 8, sfi. that the compressed air in the chamber 4 is excluded from supply to the mixing chamber 3 and the conical chamber 2. The movement of the diaphragm is carried out by means of an actuated actuator 9. The mixing chamber 3 is provided with a number of nozzles 10 for blowing compressed air in a suitable amount. Alternatively, such compressed air can also be introduced into the center through a crust in the actuator 9 and across the diaphragm 7.

Da anordningen forst skall tagas i bruk, oppnas forst en icke visad ventil, sa att tryckluft infores i ringkammaren 4 och darifran biases ut i tra:nsportiedningen. Membranet 7 star i stfingt lage. Det pulverformiga materialet, I. ex. cement, tillfores upptill frail en. materialbehallare, och matas in i smut hoppressas i den koniska. kammaren 2 sa .att en materialpropp bildas i derma. Under detta forlopp hindras tryckluften frau kammaren 4 att stromma upp I kammaren 2 genom att memhranet 7 tatar mat 'satet 8. Allteftersom materialproppen bygges upp med hjalp av matarskruven 1 och pressas nedat i cylinder. 2 trycket mot materialproppen uppgar till ett bestamt varde, lyfter detta tryck matarskruven 1 nagot uppfit i axiell riktning. Genom denna skruvens rorelse pfiverkas en gransstrom:stfillare, soin ger en impuls till en automatik, vilken dais medelst manoverorganet 9 oppnar bottenmembranet 7, dels dven oppnar trycklufttillforseln till blandningskammaren 3 genom munstyckena 10 saint ocksa eventuellt stryper .eller reglerar lufttillforseln till tryckluftkamraaren 4. Da materialproppens nedre del kommer ned till blandningskammaren. 3, loses proppen upp med hjalp av tryckluftinsprutningen och materialet blandas med luften, varigenom en fluidise-ring erhalles. Blandningen pressas ut i tryckkammaren 4 och fores vidare ut i transportledningen. When the device is first to be put into use, a valve (not shown) is first opened, so that compressed air is introduced into the annular chamber 4 and from there is biased out into the transport line. The membrane 7 star in stfingt make. The powdered material, I. ex. cement, is applied at the top of frail one. material container, and fed into the dirt compressed in the conical. chamber 2 said that a material plug is formed therein. During this process, the compressed air from the chamber 4 is prevented from flowing up into the chamber 2 by the membrane 7 tightening the feed set 8. As the material plug is built up with the aid of the feed screw 1 and pressed down into the cylinder. 2 the pressure against the material plug amounts to a certain value, this pressure lifts the feed screw 1 slightly raised in the axial direction. Through the movement of this screw a spruce current is actuated: throttle, which gives an impulse to an automatic, which then by means of the actuator 9 opens the bottom diaphragm 7, partly also opens the compressed air supply to the mixing chamber 3 through the nozzles 10 saint also possibly throttles or regulates the compressed air supply. the lower part of the material plug comes down to the mixing chamber. 3, the plug is dissolved by means of the compressed air injection and the material is mixed with the air, whereby a fluidization is obtained. The mixture is pressed out into the pressure chamber 4 and is carried further out into the transport line.

Om matarskruvens tryck mot materialproppen minskas till foljd av minskad materialtillforsel, stanges bottenmembranet 7 automatiskt medelst samma automatik som den ovannamnda tills den Ater oppnas dâ arbetstrycket pa materialproppen Rats till det bestfinada vardet. Vill man avbryta transporten, stop-pas matarskruven 1. Bottenmembranet 7 kan ocksá oppnas och stangas manuellt. If the pressure of the auger against the material plug is reduced as a result of a reduced material supply, the bottom membrane 7 is automatically closed by the same automation as the one mentioned above until it is opened again when the working pressure on the material plug is set to the finest value. If you want to interrupt the transport, stop the feed screw 1. The bottom diaphragm 7 can also be opened and closed manually.

- Eventuellt kan blandningskammaren med sina inblasningsmunstyck.en undvaras. - The mixing chamber with its blowing nozzles may be dispensed with.

Claims

1. Claim claim: 1. Device for transporting powdered material, sasor cement and the like, by means of compressed air or gas in a transport line, characterized in that a feeding or compression device (1) is arranged in the upper part of a substantially vertical pressure chamber (2) for feeding the powdered material and compressing it into a material plug in this chamber, Aiken pressure chamber, possibly at the bottom, adjoins a means (10) for injecting compressed air or well-provided mixing chamber (3). ) for dissolving the material plug and mixing the material with the name compressed air or gas, and that under the pressure chamber (2) resp. the mixing chamber (3) is provided with a compressed air chamber (4) connected to the transport line, which, through a stowage or valve means for a displaceable & dm mixing, - (3) resp. the pressure chamber (4).

2. Device according to patent claim 1, characterized in that a regulating mechanism by the effect of predetermined maximum resp. minimum pressure in the pressure chamber (20r is arranged to open or close the communication between the compressed air chamber and the mixing chamber.

3. A according to claim 2, characterized in that the control mechanism is also arranged to provide a supply of compressed air for blowing through one or more nozzles. (10) in the mixing chamber (3) ..

Device according to the patent, language 2 or 3, characterized in that the regulating mechanism is arranged to restrict the supply of compressed air to the compressed air chamber (4) at the maximum pressure found. so that the pressure in it = becomes lower than the pressure in the mixing chamber (3). ..

5. Device according to any one of patent claims 11-1, characterized in that the restraining means consists of an elastic membrane movable in the compressed air hammer. . lower part.

Device according to any one of claims 2-5, characterized in that the feeder device (1), e.g. in the farm of a propeller or propeller, under the influence of the pressure in the pressure chamber (2) is movable in the axial direction to influence the regulating mechanism Request publications: