US1629619A - Primary strainer for cellulose wood pulp, etc. - Google Patents
Primary strainer for cellulose wood pulp, etc. Download PDFInfo
- Publication number
- US1629619A US1629619A US149224A US14922426A US1629619A US 1629619 A US1629619 A US 1629619A US 149224 A US149224 A US 149224A US 14922426 A US14922426 A US 14922426A US 1629619 A US1629619 A US 1629619A
- Authority
- US
- United States
- Prior art keywords
- pulp
- channel
- wood pulp
- cellulose wood
- primary strainer
- 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 - Lifetime
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
- D21D5/06—Rotary screen-drums
Definitions
- knot catchers for cellulose are only to a small degree lenient in their treatment of the knots. Particurlarly this is true of theft pes in which 5 the knots are collected in t e: interior .of
- the inventor has succeeded in providing an apparatus for continuously removing the knots in the cel- ⁇ 0 lulose without thelatter being in any way injured by a too hard treatment, and at the same time the knots are nevertheless, before they are removed from the machine, washed quite clean from adhering cellulose fibres.
- catching gratings 2 are attached to a shaft 3 rotating transversely to the pulp chann el 1. These gratings comprise a great number of parallely attached bars s aced suitably apart in order to 'catchthe ot's, whereas the cellulose is allowed to'pass throu h without any hindrance. Obviously nothing prevents the use of other means for straining 40 the pulp than the bar-shaped gratings here indicated. Thus the use of for instance a perforated or slotted plate may be suggested.”
- t e channel is rovidcd with a recessed portion correspon ing 'to the outer moving radius of the gratings
- the recessed portion is made so-large that all the pulp passing through the supply channel must passthrough at' least one grating.
- Coarse-straining a paratus for sorting cellulose, wood pulp an the like comprising a pulp channel, a scooping wheel, the shaft of which is arran ed transversely to the pulp channel and t e scoopsof which are made as coarse strains or ratings corresponding approximately to t e cross section of the pulp. channel, so that the scoops during their movement through the pulp in the pulp channel sweep with them knots and impurities but allow' the fine pulp to pass.
Description
May 9 c. M. HANSSEN PRIMARY STRAINER FOR CELLULOSE, WOOD PULP, ETC' Filed Nov. 1a, 1926 Patented May 24, 1927;
UNITED STATES" PATENT, orric'e.
cnRrsrmN MARTIN Russian, or MJONDALEN, NORWAY, assrenoR m 4 8. 'rnunns max. vnnxsrnn; or sxornn, NEAR osno, NORWAY.
PRIMARY STBAINER roR CELIlULOSE'. woon rung, are.
Application filed November 18, 1926, Serial No. 149,224, and in Norway November 26, 1925.
The most usually employed knot catchers for cellulose are only to a small degree lenient in their treatment of the knots. Particurlarly this is true of theft pes in which 5 the knots are collected in t e: interior .of
rotatin drums.
By t e present invention the inventor has succeeded in providing an apparatus for continuously removing the knots in the cel- \0 lulose without thelatter being in any way injured by a too hard treatment, and at the same time the knots are nevertheless, before they are removed from the machine, washed quite clean from adhering cellulose fibres.
i Further the new apparatus, in addition to its simple constructlon, ossesses also'the great advantage that nothing of the height of the pulp level is lost. The machineis arranged directly in the horizontal pulp channel and therefore, both regarding floor area and building height, it results in a space-saving solution of the problem, and at the same time its expenditure of power is quite minimal, because the same is re-- stricted to the power required for moving the grating slowl against the pulp stream. The drawing il ustrates diagrammatically an embodiment of the invention, Figure '1 being a longitudinal section and Figure 2 a cross section of, the
strainer apparatus not-catcher). The
. catching gratings 2 are attached to a shaft 3 rotating transversely to the pulp chann el 1. These gratings comprise a great number of parallely attached bars s aced suitably apart in order to 'catchthe ot's, whereas the cellulose is allowed to'pass throu h without any hindrance. Obviously nothing prevents the use of other means for straining 40 the pulp than the bar-shaped gratings here indicated. Thus the use of for instance a perforated or slotted plate may be suggested."
against the shaft and be collected in the primary or coarse v characterized by channel-shaped flow. between the fastening rlbsof the bars. When'the rating'arrives at its uppermost position, t is channel is axially swept b a strong rinsing jet from the nozzle 4. his water. jet transports the collected and cleansed knots out to the side, where it is collected by the fund 5 and conducted away.
In order to prevent any ulp from passing the apparatus unstrained, t e channel is rovidcd witha recessed portion correspon ing 'to the outer moving radius of the gratings The recessed portion is made so-large that all the pulp passing through the supply channel must passthrough at' least one grating.
Claims.
1 Coarse-straining a paratus for sorting cellulose, wood pulp an the like comprising a pulp channel, a scooping wheel, the shaft of which is arran ed transversely to the pulp channel and t e scoopsof which are made as coarse strains or ratings corresponding approximately to t e cross section of the pulp. channel, so that the scoops during their movement through the pulp in the pulp channel sweep with them knots and impurities but allow' the fine pulp to pass.
2. Apparatus as. set forth in' claim 1, characterized by this that-transversely to the pul channel a rinsing pi e is arranged which rinses the knots inwardli towards the shaft, where they are. collecte in the channel-shaped portion between two scoops.
3. Apparatus as set forth in claim 1,
scooping whee to the side out from the channel between two scoops, when the latter are in their uppermost position or approximately so.
4. Apparatus asset ,f rth in claim, 1, characterized by this-that the pulp channel, at the place where the scooping wheel is arrange is provided with a. recessed portion following the largest /radius' of the scoops.
In testimony whereof I have signed my name to this specification.
CHRISTIAN MARTIN HANSSEN.
this that at one side of the near the shaft a rinsing nozzle 1s arranged which sweeps the knots
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO1629619X | 1925-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1629619A true US1629619A (en) | 1927-05-24 |
Family
ID=19909549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US149224A Expired - Lifetime US1629619A (en) | 1925-11-26 | 1926-11-18 | Primary strainer for cellulose wood pulp, etc. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1629619A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2707420A (en) * | 1952-12-11 | 1955-05-03 | Leje & Thurne Ab | Pulp preparing apparatus |
| DE3024485A1 (en) * | 1980-06-28 | 1982-01-21 | Ed. Mann GmbH & Co KG Papierfabrik, 6719 Ebertsheim | Used paper separator - has grid to loosen impurities together with an eddy current |
-
1926
- 1926-11-18 US US149224A patent/US1629619A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2707420A (en) * | 1952-12-11 | 1955-05-03 | Leje & Thurne Ab | Pulp preparing apparatus |
| DE3024485A1 (en) * | 1980-06-28 | 1982-01-21 | Ed. Mann GmbH & Co KG Papierfabrik, 6719 Ebertsheim | Used paper separator - has grid to loosen impurities together with an eddy current |
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