CN202688757U - Rotary drum vacuum pulp washer - Google Patents
Rotary drum vacuum pulp washer Download PDFInfo
- Publication number
- CN202688757U CN202688757U CN 201120559223 CN201120559223U CN202688757U CN 202688757 U CN202688757 U CN 202688757U CN 201120559223 CN201120559223 CN 201120559223 CN 201120559223 U CN201120559223 U CN 201120559223U CN 202688757 U CN202688757 U CN 202688757U
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- transmission side
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- pulp
- rotary drum
- washer
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Abstract
The utility model belongs to the field of cotton pulp preparation, and particularly provides a rotary drum vacuum pulp washer for cotton pulp water-saving washing and continuous bleaching, wherein a filtrate flow channel of a rotary drum of the pulp washer is changed to be inclined from originally horizontal, and is inclined gradually from a transmission side to a non-transmission side; the flow channel at the transmission side is shallow; the flow channel at the non-transmission side is deep; the angle of inclination is 1-5 degrees; the internal diameter of a water leg is changed to be 350-450 mm from original 250 mm; the vacuum pulp washer with the design is not only water-saving but also good in washing effect, can reduce labor intensity, improve control precision, cooperate with corresponding production process to realize continuous production and stable product quality.
Description
Technical field
The utility model belongs to the cotton pulp field of papermaking, and a kind of cotton pulp saving washing water continuous bleaching vacuum pulp washing machine specifically is provided.
Background technology
Cotton Pulp claims again refining cotton pulp, is take cotton linter as raw material, through alkaline cooking, the refining a kind of high purity cellulose that forms of rinsing.Mainly for the manufacture of cellulose acetate, nitrocellulose and ethers cellulose, be widely used in the fields such as food, medicine, toothpaste, daily use chemicals, building materials, papermaking, electronics, plastics, space flight and military project.
Present Cotton Pulp production generally is divided into boiling, washing, several operations of bleaching, manufacture paper with pulp.The capital equipment of using at present in washing procedure is belt pulp washing machine or even slot type wash engine, not only water consumption large, can't realize remote auto control but also clean result is poor, appropriation of labour power.Bleaching process mainly uses the slot type bleaching machine, and the bleaching energy consumption is high, efficient is low, and owing to can not realize continuous bleaching, causes the pulp quality difference of different batches.The washing facility of using comparative maturity aspect papermaking mainly is vacuum pulp washing machine, but because the black liquor different in kind of dissolving pulp and paper making pulps, and two kinds of slurry kind of drainabilities differ greatly, conventional wash engine is applied to online can to occur being difficult in the process of cotton pulp washing, can't produces vacuum, easy slurry, causes and can't normally use.
Summary of the invention
Many weak points that the utility model exists in the Cotton Pulp pulping process for existing drum vacuum pulp washer, a kind of cotton pulp saving washing water continuous bleaching vacuum pulp washing machine is provided, the filtrate runner of wherein said washer drum changes inclination into by original level, tilted gradually to non-transmission side by transmission side, and the transmission side runner is shallow, non-transmission side runner is dark, 1 ~ 5 ° at angle of inclination, water leg internal diameter changes to 350 ~ 450mm by original 250mm simultaneously, adopt the vacuum pulp washing machine of this design not only economize on water and also clean result good, reduce labor intensity, improve control accuracy, make production continuously after cooperating corresponding production technology, constant product quality.
The utility model has mainly adopted drum vacuum pulp washer to improve, and its concrete technical scheme is:
A kind of vacuum pulp washing machine, the filtrate runner of described washer drum is tilted to non-transmission side gradually by transmission side, and the transmission side runner is shallow, and non-transmission side runner is dark; Its water leg internal diameter is 350 ~ 450mm.
Why design like this, mainly be because this wash engine is mainly used in cotton pulp and washs, because the cotton pulp drainability is very good, if the concentration according to the prior art regulation is advanced slurry, slurry one enters fast drainage of wash engine, just be enough to make high can't the surfing the Net of concentration of cotton pulp at the moment drainage that enters stock tank, cause the stock tank slurry, and then affect the work of whole wash engine, so the inventor is through long term production, to advance to starch the concentration adjustment and reduce, make it to be reduced to the wherein best 1wt% of employing of 0.5 ~ 1.5wt%, adopt this design after the black liquor amount large nearly one times, although and original water leg can be full of, but black liquor can't in time be discharged, and will cause like this black liquor to be detained in wash engine in a large number, destroys vacuum, be difficult to reach the purpose of pulp washing, this sizing concentration can not be excessive, otherwise as mentioned above behind the quick drainage of cotton pulp black liquor can't be full of the water leg, can't produce vacuum equally; And if this sizing concentration is too small, then can strengthen the output of black liquor, improve whole production cost.
And in order to cooperate the adjustment of this sizing concentration, the inventor makes it to be increased to 350-450mm with the internal diameter adjustment of wash engine water leg, so that it can adapt to the increase of black liquor amount.The rotary drum of same wash engine the inside, the above is furnished with runner, be covered with net above the runner, slurry is held back by net and is formed the slurry layer like this, filtrate is flowed out wash engine by runner, runner originally all is level, be parallel to rotary drum, the water leg is at non-transmission side, and the Length Ratio of rotary drum is larger, and the black liquor of transmission side flows to non-transmission side from transmission side like this, flow to again the water leg, whole stroke is long when producing continuously, and black liquor is difficult to discharge timely, when especially the black liquor amount is large, can goes out runner and run slurry layer above the bad runner, cause producing and normally to carry out, the present inventor tilts runner instead, forms drop, is conducive to accelerate the outflow of black liquor, wherein main design is exactly that runner is tilted to non-transmission side gradually by transmission side, and the transmission side runner is shallow, and non-transmission side runner is dark, thereby guarantees carrying out smoothly of whole pulp washing process.
Wherein said runner angle of inclination is that 1 ~ 5 ° and transmission side runner are shallow, and non-transmission side runner is dark, can reach best vacuum effectiveness under this angle; Same in order to reach better pulp washing effect, the water leg internal diameter described in the present invention preferably adopts 400mm.
In sum, the utility model improves traditional drum vacuum pulp washer, enables to realize the continuous production of cotton pulp washing, bleaching, realizes that easily remote centralized controls automatically, save labour cost, and the product quality of producing is high and stable.Compared with prior art, at present existing cotton pulp industry, what extract workshop section's normal operation is belt pulp washing machine, 12 ~ 15 cubic metres of ton slurry waters, and the ton slurry produces black liquor more than 10 cubes, wash rear residual alkali more than 0.5g/L, and after adopting institute's modified processing route of the present invention and 5 series connection of drum vacuum pulp washer, only about 8 cubes, the ton slurry produces black liquor and also only has 6 ~ 7 cubes ton slurry water, wash rear residual alkali about 0.2 ~ 0.3g/L, visible technique of the present invention is fit to the requirement that the serialization environmental protection is produced more.
Description of drawings
Fig. 1 is the schematic diagram of the drum vacuum pulp washer rotary drum upper runner that adopts of the utility model;
1 is the filtrate runner among the figure, and A is non-transmission side, and B is transmission side.
The specific embodiment
A kind of rotary-drum vacuum wash engine, the filtrate runner 1 of described washer drum is tilted to non-transmission side A gradually by transmission side B, and transmission side B runner is shallow, and non-transmission side A runner is dark; Described wash engine water leg internal diameter is 350 ~ 450mm.
Wherein said runner angle of inclination is 1 ~ 5 °; Described wash engine water leg internal diameter preferably adopts 400mm.
Claims (3)
1. rotary-drum vacuum wash engine, it is characterized in that: the filtrate runner (1) of described washer drum is tilted to non-transmission side gradually by transmission side, and the transmission side runner is shallow, and non-transmission side runner is dark; Described wash engine water leg internal diameter is 350 ~ 450mm.
2. wash engine according to claim 1, it is characterized in that: wherein said runner angle of inclination is 1 ~ 5 °.
3. wash engine according to claim 1 and 2, it is characterized in that: described wash engine water leg internal diameter is 400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120559223 CN202688757U (en) | 2011-12-28 | 2011-12-28 | Rotary drum vacuum pulp washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120559223 CN202688757U (en) | 2011-12-28 | 2011-12-28 | Rotary drum vacuum pulp washer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202688757U true CN202688757U (en) | 2013-01-23 |
Family
ID=47544402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120559223 Expired - Fee Related CN202688757U (en) | 2011-12-28 | 2011-12-28 | Rotary drum vacuum pulp washer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202688757U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561093A (en) * | 2011-12-28 | 2012-07-11 | 山东海韵生态纸业有限公司 | Continuous cotton pulp washing and bleaching process |
| CN111593595A (en) * | 2020-05-25 | 2020-08-28 | 郑州磊展科技造纸机械有限公司 | Filtrate distribution device of multi-disc thickener |
-
2011
- 2011-12-28 CN CN 201120559223 patent/CN202688757U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561093A (en) * | 2011-12-28 | 2012-07-11 | 山东海韵生态纸业有限公司 | Continuous cotton pulp washing and bleaching process |
| CN102561093B (en) * | 2011-12-28 | 2014-07-16 | 山东海韵生态纸业有限公司 | Continuous cotton pulp washing and bleaching process |
| CN111593595A (en) * | 2020-05-25 | 2020-08-28 | 郑州磊展科技造纸机械有限公司 | Filtrate distribution device of multi-disc thickener |
| CN111593595B (en) * | 2020-05-25 | 2022-07-08 | 郑州磊展科技造纸机械有限公司 | Filtrate distribution device of multi-disc thickener |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20131228 |