Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1466413 A
Publication typeGrant
Publication dateAug 28, 1923
Filing dateFeb 3, 1922
Priority dateFeb 3, 1922
Publication numberUS 1466413 A, US 1466413A, US-A-1466413, US1466413 A, US1466413A
InventorsChristian Schaanning Peder
Original AssigneeChristian Schaanning Peder
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method and arrangement for conveying wood pulp
US 1466413 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Aug. 28, 1923. 11,466,413




Application filed February 3, 1922. Serial No. 533,821.

To all whom it may concern:

Be it known that I, PEDER CHRISTIAN SCHAANNING, a subject of the King of Norway, residing at Aurvang, V. Holmen 6 n/Christiania, Norway, have invented certain new and useful Improvements in Methods and Arrangements for Conveying Wood Pulp; and I do hereby declare the following to be a full, clear, and exact de- 10 scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon,vwhich form a part of this specification.

The construction of pumps for conve in wood pulp has always been met by di cul tics, when the percentage of wood pulp in 4 liquid exceeds 4-5%.

The difficulties increase when the pulp has to be conveyed through long ipes and when the fibers are particularly ong in which cases the wood fibers easily separate from the water and clog the pipes.

This clogging etlect is caused by the friction of the pipe walls against the fibers which gradually come to rest along the walls, so that the free cross section is gradually decreased to a small channel in the middle through which only water is pressed, while all the fibers accumulate in the pipe.

This drawback is avoided in accordance with the present invention by means of which it is made possible to convey by pumping wood pulp with a very heavy percentage of wood fibers.

The present invention consists in securing alively motion of the wood fibers in the o convcyer pipe thereby preventing the separation of water and fiber as well as accumulation of wood pulp along the inner surface of the pipes.

This is obtained by introducing at suitable points of the conveyer pipes preferably in front of bends and long straight parts air under a suitable pressure. I

This air is preferably introduced in such a manner that it has the same direction as the movement of the pulp in the pipe.

When the air is introduced in the pipe it expands and causes a bubbling movement in the pulp, whereby the separation of water and fiberis prevented.

On the drawing is diagrammatically illustrated an arrangement by means of which the method may be carried into effect.

The pulp is to be conveyed from vessel 1 v to vessel 2 by means of centrifugal pump 3.

Pipe 4 connects pipe 3 with vessel 2. In said pipe 4 there is introduced at suitable points air jets 5 to which pressure air is supplied from compressor (3, and which are directed in the'direction of movement of the pulp.

Claim: y

The method of conveying a mixture of water and wood pulp from one vessel to another which comprises forcing the mixture into a closed conduit connecting the two vessels, and maintaining a. bubbling of the mixture by introducing air into the conduit at the bottom of the mixture and in substantially the same direction as the flow of the mixture.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2645378 *Mar 5, 1948Jul 14, 1953Kamyr AbPulp storage tower and method of emptying same
US2686085 *Jul 15, 1950Aug 10, 1954Odell William WMethod of conveying or transporting small-size solids
US2707146 *Aug 8, 1951Apr 26, 1955Scott Paper CoMethod of bleaching mechanically disintegrated wood pulp
US2736121 *Feb 20, 1951Feb 28, 1956 kimmerle
US2756685 *Feb 14, 1951Jul 31, 1956StamicarbonTransport of metals in liquid form
US2852313 *Jul 28, 1955Sep 16, 1958Henry MickelApparatus and method for removing refuse
US3072442 *Oct 30, 1959Jan 8, 1963Technicon InstrApparatus for treating liquids
US4171852 *Jun 27, 1977Oct 23, 1979Haentjens Walter DPropulsion of slurry along a pipeline by ultrasonic sound waves
US4623302 *Oct 21, 1985Nov 18, 1986Wiederaufbereitungsanlage Karlsruhe Betriebsgesellschaft MbhArrangement for facilitating the start-up of not self-priming centrifugal pumps
US5618136 *Aug 4, 1995Apr 8, 1997Smoot Co.Dual blower railcar discharge and conveyor system and method
U.S. Classification406/95, 417/89, 8/156, 406/86
International ClassificationB65G53/00, B65G53/30
Cooperative ClassificationB65G53/30
European ClassificationB65G53/30