CN85105596B - Vertical washing machine - Google Patents
Vertical washing machine Download PDFInfo
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- CN85105596B CN85105596B CN85105596A CN85105596A CN85105596B CN 85105596 B CN85105596 B CN 85105596B CN 85105596 A CN85105596 A CN 85105596A CN 85105596 A CN85105596 A CN 85105596A CN 85105596 B CN85105596 B CN 85105596B
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- pulp
- washing
- wash engine
- described wash
- net drum
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Abstract
The present invention discloses a vertical pulp washer for washing paper pulp in a dynamic state, especially for washing straw pulp, which is mainly composed of a hollow shaft, a stirring fin, a net drum and a casing. The present invention is characterized in that pulp washing is divided into two stages to be carried out, and working temperature is high. Paper pulp is sufficiently washed under the rotary stirring of the stirring fin, the black liquor extraction rate is more than 90%, and meshes of a filter screen can not be blocked in the process of pulp washing.
Description
The present invention relates to a kind of vertical washing machine that is applicable to middle-size and small-size paper mill, this vertical washing machine can wash the paper pulp that any difficulty is washed, particularly straw pulp.
Existing washing device has horizontal belt vacuum pulp washing machine, press master and washer, during with these equipment pulp washings, greatest problem is that filter screen is easily blocked, paper pulp was not stirred when its reason was pulp washing, and when particularly washing straw pulp, the fiber of straw pulp is short, easy swollen aquation, heteroproteose cell is many, and the easier mesh that makes stops up filtration difficulty.The horizontal belt vacuum pulp washing machine is equipped with complicated vacuum extractor, when wash temperature surpasses 70 ℃, owing to flash distillation takes place vacuum is reduced, and causes clean result to descend.In addition owing to be that segmentation vacuumizes, the cost height, floor space is bigger.When washing with press master, fiber loss is very big, is about 2.1～4.2%, and extraction rate of black liquor only is about 50%.Present washer, water consumption are 50～100 cubic metres of/ton slurries, and much larger than 10 cubic metres of/ton slurries of routine, processing causes difficulty to black liquor.
The purpose of this invention is to provide a kind of improved wash engine, overcome the deficiency of existing washing device, can wash the paper pulp that any difficulty is washed, the filter screen mesh is not blocked.
The task of invention is finished as follows: this body divides two sections pulp washings, during first section pulp washing, paper pulp enters vertical washing machine in concentration 1～3%, and under the replacing water effect of vertical its cylinder ejection with quill shaft of the rotation stirring of stirring wing (4), black liquor flows to net drum (1).Be in same water level inside and outside the net drum, so mesh is not stopped up by fiber.Replacing water is sprayed onto the paper pulp perpendicular to cylinder from quill shaft (2), and fiber is stirred washing in net drum inboard, and the black liquor of displacement flows out the net drum and flows out through shell (3), and injection flow rate and shell flow out the black liquor amount phase equilibrium.First section pulp washing, advancing slurry-outlet quantity is the same with concentration, paper pulp is in and is rotated and stirring, and black liquor is fully overflowed.Water level during second section pulp washing between shell and the net drum is lower than the slurry position, and pulp density can improve 8～15%.Paper pulp through one, second wash only need behind vertical washing machine, reduce by 10～15% before paper pulp card uncle valency hardness ratio is washed with 1～3 minute.
The highest pulp washing temperature of this machine can reach 90～95 ℃, owing to the amount of removing of pollutants such as the alkali lignin liter along with temperature increases, therefore, and the pulp washing particular significant effect of this machine, every square metre of screen area can be washed 2～3 tons of slurry/days.Again owing to be at dynamic down pulp washing, in dilution gfactor 2～4 o'clock, extraction rate of black liquor can be greater than 90%.This machine is simple in structure, and under the identical situation of pulp washing amount, cost is 1/6 of a horizontal belt wash engine only, and power consumption is low.The replacing water of this machine can be recycled, and water consumption is very low.
Concrete structure of the present invention is provided by following examples and accompanying drawing thereof.
As shown in drawings, whole machine body is a vertical structure, mainly by net drum (1), quill shaft (2), shell (3) and stir wing (4), dividing plate (5) is formed.Pulp washing divides one section and two sections to carry out.A represents to enter replacing water, and B represents discharge opeing, and C represents to enter paper pulp, and D represents pulp.Net drum (1) and shell (3) all can resolve into four, are convenient to change filter screen.The net drum is gone up porose, is stuck on the support with the bead face.Quill shaft (2) is by buncher (6) transmission, and rotating speed is 100～150 rev/mins.Some apertures are arranged on the quill shaft sidewall, and replacing water sprays from the hole.Also be equipped with on the quill shaft and stir wing (4), in order to the rotation agitating pulp.Stir wing and can be both wings or more than the both wings, the shape of stirring wing can be the shaped as frame wing or spiral wing.Alkaline pulp is selected the wing that stirs of general steel for use, and the acid system slurry is selected the wing that stirs of acid resisting material for use.The dividing plate of this machine places between net drum (1) and the shell (3), makes replacing water be divided into two sections, and dividing plate is made with common iron or acid resisting material.
When starching, also can make paper pulp advance slurry from top, promptly advance slurry, from the bottom pulp, promptly from C portion pulp from D portion with this machine washing.
Claims (10)
1, the vertical washing machine used of a kind of middle-size and small-size paper mill, the empty axle that filter screen, shell, net drum is arranged and can spray water is characterized in that:
Be equipped with on a, the quill shaft and stir wing.
B, there is one to make pulp washing divide two sections dividing plates that carry out.
C, quill shaft sidewall have hole for water spraying.
2, by the described wash engine of claim 1, the special speed that it is characterized in that quill shaft is at 100～150 rev/mins.
3,, it is characterized in that dividing plate places between net drum and the shell by the described wash engine of claim 1.
4,, it is characterized in that dividing plate can make with ordinary steel or acid resisting steel by the described wash engine of claim 1.
5,, it is characterized in that two sections replacing water is capable of circulation to one section pulp washing usefulness by the described wash engine of claim 1.
6,, it is characterized in that net drum and shell can be decomposed into four by the described wash engine of claim 1.
7,, it is characterized in that paper pulp can advance slurry, top pulp from the wash engine bottom, also can advance slurry, bottom pulp in top by the described wash engine of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85105596A CN85105596B (en) | 1985-07-24 | 1985-07-24 | Vertical washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85105596A CN85105596B (en) | 1985-07-24 | 1985-07-24 | Vertical washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85105596A CN85105596A (en) | 1985-12-20 |
| CN85105596B true CN85105596B (en) | 1988-02-24 |
Family
ID=4794582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85105596A Expired CN85105596B (en) | 1985-07-24 | 1985-07-24 | Vertical washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85105596B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067014C (en) * | 1996-11-29 | 2001-06-13 | 刘筱安 | Extracting machine for papermaking thick black liquid |
| CN100429348C (en) * | 2002-06-27 | 2008-10-29 | 耿志印 | Vertical pulp dewatering machine |
| SE528729E (en) * | 2005-06-03 | 2015-12-15 | Metso Paper Inc | Device for treating cellulose pulp |
-
1985
- 1985-07-24 CN CN85105596A patent/CN85105596B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85105596A (en) | 1985-12-20 |
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Legal Events
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| 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 |