FI874256A - FOERFARANDE OCH ANORDNING I INLOPPSLAODAN AV EN PAPPERSMASKIN. - Google Patents
FOERFARANDE OCH ANORDNING I INLOPPSLAODAN AV EN PAPPERSMASKIN. Download PDFInfo
- Publication number
- FI874256A FI874256A FI874256A FI874256A FI874256A FI 874256 A FI874256 A FI 874256A FI 874256 A FI874256 A FI 874256A FI 874256 A FI874256 A FI 874256A FI 874256 A FI874256 A FI 874256A
- Authority
- FI
- Finland
- Prior art keywords
- head box
- flow
- pulp suspension
- turbulence generator
- flow passages
- Prior art date
Links
Abstract
Method in the head box of a paper machine, the head box comprising a discharge channel 13, from which a jet J of pulp suspension flows out on the wire 1. In the turbulence generator 22 and/or distribution pipework of the head box a group of superimposed parallel flow passages 23 is used, in which a pulp suspension flow is divided up into secondary flows F1, which are combined into a discharge channel flow F. With the method the speed profile and/or corresponding grams per square metre profile of the jet J of pulp suspension flowing out via the discharge opening are controlled by regulating the flow cross-sectional areas of the flow passages 23 of the distribution pipework and/or the turbulence generator 22. Regulation of the cross-sectional area of the flow passages 23 of the distribution pipework and/or the turbulence generator 22 has been extended to encompass the entire transverse width of the head box. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI874256A FI82729C (en) | 1987-09-28 | 1987-09-28 | Method and apparatus in the inlet box of a paper machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI874256 | 1987-09-28 | ||
FI874256A FI82729C (en) | 1987-09-28 | 1987-09-28 | Method and apparatus in the inlet box of a paper machine |
Publications (4)
Publication Number | Publication Date |
---|---|
FI874256A0 FI874256A0 (en) | 1987-09-28 |
FI874256A true FI874256A (en) | 1989-03-29 |
FI82729B FI82729B (en) | 1990-12-31 |
FI82729C FI82729C (en) | 1991-04-10 |
Family
ID=8525140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI874256A FI82729C (en) | 1987-09-28 | 1987-09-28 | Method and apparatus in the inlet box of a paper machine |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI82729C (en) |
-
1987
- 1987-09-28 FI FI874256A patent/FI82729C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI874256A0 (en) | 1987-09-28 |
FI82729B (en) | 1990-12-31 |
FI82729C (en) | 1991-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: VALMET PAPER MACHINERY INC |