CN2337179Y - Double-screw black liquor extractor - Google Patents
Double-screw black liquor extractor Download PDFInfo
- Publication number
- CN2337179Y CN2337179Y CN 98221878 CN98221878U CN2337179Y CN 2337179 Y CN2337179 Y CN 2337179Y CN 98221878 CN98221878 CN 98221878 CN 98221878 U CN98221878 U CN 98221878U CN 2337179 Y CN2337179 Y CN 2337179Y
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- utility
- double
- screen
- model
- black liquor
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Abstract
The utility model relates to a double-screw black liquor extractor. The utility model relates to a paper making mechanism. The utility model comprises a double-screw shaft and a screen cylinder at the outer part of the double-screw shaft in the original equipment; but for screen holes on the screen cylinder, the utility model uses long holes; the length direction of each screen hole is not vertical to the shaft line direction of the double-screw shaft. The used long holes firstly can the percentage of open area of the screen cylinder, which can make the black liquor filtered out in the normal condition. Because the width of each long hole is smaller, the long holes can stop the paper pulp fiber from draining from the holes in definite extent. Because the length direction of each screen hole and the direction of motion of the paper pulp has an angle, the paper pulp at the screen holes can obtain the larger pressure, so that the utility model has good effect of the black liquor extracting operation.
Description
The utility model is a kind of double helix black liquid extraction machine, relates to a kind of papermaking equipment.
Black liquid extraction sends in the black liquid extraction machine by helical axis paper pulp to paper pulp extruding and the process that black liquor leached by the screen cylinder of helical axis periphery.The perforate of screen cylinder is a circular hole in the existing black liquid extraction machine, and its diameter is 1.8-3mm.Because perforate is bigger, paper pulp fiber runs off serious, makes the cost of paper finished product higher.If but opening diameter is less, then can reduce the percent opening of screen cylinder, influence black liquor and leach.The screen cylinder of existing some single-screw black liquid extraction machine has adopted long hole forms, but the length direction in hole is along the circumferencial direction of screen cylinder, i.e. axial vertical with helical axis, and this structure makes paper pulp suffered pressure in extractor less, thereby the black liquid extraction weak effect.
The purpose of this utility model is to design a kind of fiber loss and effective double helix black liquid extraction machine of black liquid extraction of reducing.
Comprise the screen cylinder that double helix axle in the original equipment and double helix axle are outer in the technical solution of the utility model, but the sieve aperture on the screen cylinder has adopted slotted hole, and the length direction of sieve aperture the axis direction with the double helix axle is not vertical.
Adopt slotted hole at first can guarantee the percent opening of screen cylinder, black liquor can normally be leached.And because the width of slotted hole is less, run off in by the hole to a certain degree can hindering paper pulp fiber.And because the length direction of sieve aperture and the direction of motion of paper pulp have an angle, thereby paper pulp is bigger at the pressure that the sieve aperture place is subjected to, black liquor is extruded effective.
Sieve aperture on the utility model screen cylinder can have angle with the axis of helical axis, this angle generally between the 0-30 degree, as 11 degree, also can with helical axis in the same way.
In addition, for preventing fiber loss, the width of sieve aperture is generally between 0.2-1.2mm with not imitating.
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
Fig. 1 is the phantom of the utility model embodiment;
Fig. 2 is the structure chart of R-joining screen cylinder;
Fig. 3 is the structure chart of vertical masonry joint screen cylinder;
Wherein, 1-bearing block, 2-charging aperture, 3-shell, 4-screen cylinder, 5-helical axis, 6-bush seat.
As shown in the figure, present embodiment comprises the shell 3 that has charging aperture 2 and grout outlet and the bearing block 1 and the bush seat 6 at shell 3 two ends, and the two ends of helical axis 5 are installed on bearing block 1 and the bush seat 6, and between shell 3 and helical axis 5 screen cylinder 4 are installed.Hole in the present embodiment on the screen cylinder 4 is a slotted hole, and its length is generally between 25-35mm, and its width is between 0.2-1.2.The angle of the length direction of slotted hole and helical axis axis is between the 0-30 degree, and as shown in Figure 1, when adopting R-joining, its angle is 11 degree; Again or as shown in Figure 3, the length direction of slotted hole and helical axis are in the same way.Other structure of present embodiment is same as the prior art, repeats no more here.
Version of the present utility model also can be used for the black liquid extraction machine of single-screw axle form.
Claims (5)
1, a kind of double helix black liquid extraction machine comprises the screen cylinder (4) that its helical axis (5) and helical axis (5) are outer, it is characterized in that: the sieve aperture on the said screen cylinder (4) is not vertical with helical axis for its length direction.
2, double helix black liquid extraction machine according to claim 1, it is characterized in that: the axis angle of the length direction of said sieve aperture and helical axis (5) is the 0-30 degree.
3, double helix black liquid extraction machine according to claim 2, it is characterized in that: the axis of the length direction of said sieve aperture and helical axis (5) in the same way.
4, double helix black liquid extraction machine according to claim 2 is characterized in that: the axis angle of the length direction of said sieve aperture and helical axis (5) is 11 degree.
5, according to claim 1 or 2 or 3 described double helix black liquid extraction machines, it is characterized in that: the width of said sieve aperture is 0.2-1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98221878 CN2337179Y (en) | 1998-07-23 | 1998-07-23 | Double-screw black liquor extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98221878 CN2337179Y (en) | 1998-07-23 | 1998-07-23 | Double-screw black liquor extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2337179Y true CN2337179Y (en) | 1999-09-08 |
Family
ID=33973340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98221878 Expired - Fee Related CN2337179Y (en) | 1998-07-23 | 1998-07-23 | Double-screw black liquor extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2337179Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532262B (en) * | 2007-01-18 | 2013-05-29 | 安德里兹有限公司 | Screen plates having diagonal slots with curved inlets for a digester |
-
1998
- 1998-07-23 CN CN 98221878 patent/CN2337179Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532262B (en) * | 2007-01-18 | 2013-05-29 | 安德里兹有限公司 | Screen plates having diagonal slots with curved inlets for a digester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |