CN203516115U - Pulp-air secondary separation structure of medium consistency pulp pump - Google Patents
Pulp-air secondary separation structure of medium consistency pulp pump Download PDFInfo
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- CN203516115U CN203516115U CN201320542224.6U CN201320542224U CN203516115U CN 203516115 U CN203516115 U CN 203516115U CN 201320542224 U CN201320542224 U CN 201320542224U CN 203516115 U CN203516115 U CN 203516115U
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Abstract
The utility model provides a pulp-air secondary separation structure of a medium consistency pulp pump. The structure comprises a pump body, a centrifugal impeller, a rear pump cover and a main shaft, wherein the centrifugal impeller is arranged in the pump body and is fixed to the main shaft, a pulp-air separation hole is formed in the centrifugal impeller, a secondary separation impeller is arranged between the centrifugal impeller and the rear pump cover and is fixed on the main shaft, the secondary separation impeller comprises separation blades and a wheel disc, the separation blades are fixed on the wheel disc, a vacuum area is formed between the secondary separation impeller and the rear pump cover, the side, provided with the separation blades, of the secondary separation impeller is located outside the vacuum area, the separation blades and the vacuum area are isolated through the wheel disc, the vacuum area is communicated with a vacuum pipeline arranged on the rear pump cover, and the roots of the blades of the secondary separation impeller are provided with a plurality of through holes communicated with the vacuum area. The pulp-air secondary separation structure of the medium consistency pulp pump has the advantages that an pulp-air separation area and the vacuum area are isolated through the secondary separation impeller, pulp and air enter the vacuum area after secondary separation, and therefore pulp is prevented from entering the vacuum area to block the pipeline.
Description
Technical field
The utility model relates to the paper pulp conveying equipment in a kind of paper-making process, particularly a kind of slurry gas secondary separation structure of middle concentration paper pulp pump.
Background technique
Middle concentration paper pulp pump is important manufacturing equipment in chlorine-free bleaching or few chlorine bleaching technique in paper-making pulping industry, mainly for delivery of concentration, surpasses 8% middle concentration paper pulp without mobility.In middle concentration paper pulp, contain large quantity of air, before wing pump is carried, need paper pulp and air separation and remove air, it is better that air is removed more pump performances, otherwise will produce air sinuses phenomenon, the serious paper pulp pump performance that reduces, even may cause pulp pump to move.
The slurry gas separation structure of at present traditional middle concentration paper pulp pump mainly contains two kinds: a kind of is first separation mechanism, during pulp pump operation, slurry gas mixture enters the impeller back side by equalizing orifice, utilize the centrifugal force of the back blade rotation generation of impeller that paper pulp is thrown away, air accumulation is being aspirated by vacuum system near the space at axle center.This only to the slurry gas structure of carrying out first separation, make to starch gas separation not thorough, fiber easily runs off or pump performance reduces.Middle concentration paper pulp easily enters vacuum area and pipeline, thereby causes pipeline blockage.Another kind is secondary separation mechanism, and slurry gas mixture, after first separation, enters region of no pressure through secondary separation original paper top.Air is aspirated by vacuum system, and the passage that separated paper pulp enters region of no pressure by top again returns to back blade region.Use this kind of structure that paper pulp is carried out separated with air, although improved slurry gas separating effect, but the paper pulp of going out and the slurry gas mixture of coming in are used same passage, both moving direction is contrary, interfere with each other and affect, and paper pulp is easily inhaled into vacuum line blocking pipe when degree of vacuum is higher, cause pump entoplasm gas pump performance decline even cannot be moved separation.
Summary of the invention
The purpose of this utility model is in order to solve the deficiency of above-mentioned technology, to provide a kind of can make the slurry gas separation in middle concentration paper pulp pump reach most desired effect; even paper pulp is also difficult for being inhaled into vacuum line under higher degree of vacuum; and middle concentration paper pulp is also difficult to enter vacuum area under outage state, exempted the slurry gas secondary separation structure of the middle concentration paper pulp pump that needs to clean vacuum area and pipeline before each start again.
In order to achieve the above object, the slurry gas secondary separation structure of the middle concentration paper pulp pump that the utility model is designed, comprise the pump housing, centrifugal impeller, pump postoperculum and main shaft, described centrifugal impeller is arranged in the pump housing and fixes with main shaft, pump postoperculum is arranged on pump housing rear portion, on centrifugal impeller, be provided with slurry gas sorting hole, between centrifugal impeller and pump postoperculum, be provided with secondary separation impeller, secondary separation impeller is fixed on main shaft, it mainly comprises separation vane and wheel disc, separation vane is fixed on wheel disc, and the separation vane of secondary separation impeller equates with the back blade quantity of centrifugal impeller, setting angle is identical, between secondary separation impeller and centrifugal impeller, form slurry gas separation zone, between secondary separation impeller and pump postoperculum, form vacuum area, secondary separation impeller is fixed with separation vane one side and is positioned at outside vacuum area, by wheel disc, separation vane and vacuum area are isolated, the separation vane root of secondary separation impeller is provided with several through holes and is communicated with vacuum area, and vacuum area is communicated with the vacuum line being arranged on pump postoperculum.The feature of this structure is to utilize secondary separation impeller will starch gas separation zone and vacuum area isolation, and slurry gas enters vacuum area after secondary separation again, can prevent that paper pulp from entering vacuum area blocking pipe.
As preferred version, between the separation vane of described secondary separation impeller, be provided with block pulp sheet, prevent when shutting down in pump that residual paper pulp enters in vacuum area.
As preferred version, the cylindrical of described secondary separation impeller and the inner circle gap of pump cover, below 0.5mm, can stop that paper pulp enters vacuum area by gap, can exempt and while again starting shooting, need clean vacuum pipeline.
As preferred version, described slurry gas sorting hole is greater than secondary separation impeller cylindrical to the distance of main shaft to the distance of main shaft, to improve the working efficiency of slurry gas separation.
The slurry gas secondary separation structure of the resulting middle concentration paper pulp pump of the utility model has following characteristics:
(1) improve slurry gas separating effect, reduce fiber loss.
(2) can improve middle concentration paper pulp pump performance as lift, flow and efficiency etc.
(3), in the time of making middle concentration paper pulp pump shut down, fiber is difficult for entering vacuum area and pipeline.
Accompanying drawing explanation
Fig. 1 is the axial section schematic diagram of the utility model structure;
Fig. 2 is the schematic rear view of centrifugal impeller and secondary separation impeller in the utility model.
Wherein: 1, centrifugal impeller; 2, pump postoperculum; 3, main shaft; 4, slurry gas sorting hole; 5, secondary separation impeller; 6, vacuum line; 7, through hole; 8, block pulp sheet; 9, separation vane; 10, wheel disc.
Embodiment
Below by embodiment, the utility model will be further described by reference to the accompanying drawings.
The slurry gas secondary separation structure of the middle concentration paper pulp pump that the present embodiment is described, comprise pump housing (not shown), centrifugal impeller 1, pump postoperculum 2 and main shaft 3, centrifugal impeller 1 is arranged in the pump housing and with main shaft 3 and fixes, pump postoperculum 2 is arranged on pump housing rear portion, is provided with slurry gas sorting hole 4 on centrifugal impeller 1; Between centrifugal impeller 1 and pump postoperculum 2, be provided with secondary separation impeller 5, described secondary separation impeller 5 is fixed on main shaft 3, it mainly comprises separation vane 9 and wheel disc 10, separation vane 9 is fixed on wheel disc 10, and the separation vane 9 of secondary separation impeller 5 equates with the back blade quantity of centrifugal impeller 1, setting angle is identical; Between secondary separation impeller 5 and centrifugal impeller 1, form slurry gas separation zone; Between secondary separation impeller 5 and pump postoperculum 2, form vacuum area, being fixed with separation vane 9 one sides is positioned at outside vacuum area, by wheel disc 10, separation vane 9 and vacuum area are isolated, separation vane 9 roots of secondary separation impeller 5 are provided with several through holes 7 and are communicated with vacuum area, and vacuum area is communicated with the vacuum line 6 being arranged on pump postoperculum 2.
Between the separation vane 9 of secondary separation impeller 5, be provided with block pulp sheet 8, prevent when shutting down in pump that residual paper pulp enters in vacuum area.The inner circle gap of the cylindrical of secondary separation impeller 5 and pump cover 2, below 0.5mm, can stop that paper pulp enters vacuum area by gap, can exempt and while again starting shooting, need clean vacuum pipeline.Slurry gas sorting hole 4 is greater than secondary separation impeller 5 cylindricals to the distance of main shaft 3 to the distance of main shaft 3, to improve the working efficiency of slurry gas separation.
During work, main shaft 3 passes to centrifugal impeller 1 and secondary separation impeller 5 by moment of torsion.Centrifugal impeller 1 rotates, and part is starched the centrifugal force that the positive blade rotation of gas mixture utilization produces, and paper pulp and air are carried out separated for the first time.Part slurry gas mixture enters back blade one side through slurry gas sorting hole 4 in addition, and the centrifugal force that utilizes back blade to produce, is undertaken separated for the first time by paper pulp and air.Separated slurry is thrown out of the pump housing, the air mixture that is being mingled with a little slurry enters slurry gas separation zone, on secondary separation impeller 5 under the effect of the centrifugal force of separation vane 9, carry out secondary separation, air after secondary separation enters into vacuum area by through hole 7, through vacuum line 6, is drawn out of.Separation vane 9 on secondary separation impeller 5 is isolated with vacuum area by the wheel disc 10 on impeller, and to guarantee that the air that enters vacuum area is all through secondary separation, air degree of purity is higher, prevents that paper pulp from entering vacuum area and causing pipeline blockage.
Claims (4)
1. the slurry gas secondary separation structure of a middle concentration paper pulp pump, comprise the pump housing, centrifugal impeller, pump postoperculum and main shaft, described centrifugal impeller is arranged in the pump housing and fixes with main shaft, pump postoperculum is arranged on pump housing rear portion, on centrifugal impeller, be provided with slurry gas sorting hole, between centrifugal impeller described in its feature and pump postoperculum, be provided with secondary separation impeller, secondary separation impeller is fixed on main shaft, it mainly comprises separation vane and wheel disc, separation vane is fixed on wheel disc, and the separation vane of secondary separation impeller equates with the back blade quantity of centrifugal impeller, setting angle is identical, between secondary separation impeller and centrifugal impeller, form slurry gas separation zone, between secondary separation impeller and pump postoperculum, form vacuum area, being fixed with separation vane one side is positioned at outside vacuum area, by wheel disc, separation vane and vacuum area are isolated, the root of blade of secondary separation impeller is provided with several through holes and is communicated with vacuum area, and vacuum area is communicated with the vacuum line being arranged on pump postoperculum.
2. the slurry gas secondary separation structure of middle concentration paper pulp pump according to claim 1, is provided with block pulp sheet between the separation vane of the secondary separation impeller described in it is characterized in that.
3. the slurry gas secondary separation structure of middle concentration paper pulp pump according to claim 1, is characterized in that the described cylindrical of secondary separation impeller and the inner circle gap of pump cover are below 0.5mm.
4. according to the slurry gas secondary separation structure of the middle concentration paper pulp pump described in claim 1 or 2 or 3, it is characterized in that described slurry gas sorting hole is greater than secondary separation impeller cylindrical to the distance of main shaft to the distance of main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320542224.6U CN203516115U (en) | 2013-09-02 | 2013-09-02 | Pulp-air secondary separation structure of medium consistency pulp pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320542224.6U CN203516115U (en) | 2013-09-02 | 2013-09-02 | Pulp-air secondary separation structure of medium consistency pulp pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516115U true CN203516115U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320542224.6U Expired - Lifetime CN203516115U (en) | 2013-09-02 | 2013-09-02 | Pulp-air secondary separation structure of medium consistency pulp pump |
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| CN (1) | CN203516115U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194822A (en) * | 2016-09-15 | 2016-12-07 | 浙江理工大学 | A kind of centrifugal pump closed type impeller and method for designing thereof |
| CN106640728A (en) * | 2016-12-08 | 2017-05-10 | 贵州大学 | Method and structure for reducing abrasion of sand pump of sandblasting machine |
| CN113164835A (en) * | 2018-11-30 | 2021-07-23 | 安德里兹公司 | Apparatus and method for degassing a pump |
-
2013
- 2013-09-02 CN CN201320542224.6U patent/CN203516115U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194822A (en) * | 2016-09-15 | 2016-12-07 | 浙江理工大学 | A kind of centrifugal pump closed type impeller and method for designing thereof |
| CN106194822B (en) * | 2016-09-15 | 2024-03-08 | 浙江理工大学 | Closed impeller of centrifugal pump and design method thereof |
| CN106640728A (en) * | 2016-12-08 | 2017-05-10 | 贵州大学 | Method and structure for reducing abrasion of sand pump of sandblasting machine |
| CN113164835A (en) * | 2018-11-30 | 2021-07-23 | 安德里兹公司 | Apparatus and method for degassing a pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310004 No. 71, Stadium Road, Hangzhou, Zhejiang Patentee after: HMEI MACHINERY & ENGINEERING Co. Address before: 310004 No. 71, Stadium Road, Hangzhou, Zhejiang Patentee before: HANGZHOU PROJECT & Research Institute OF ELECTRO MECHANIC IN LIGHT INDUSTRY |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Room 428, building 4, No. 970-1, Gaojiao Road, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: HMEI MACHINERY & ENGINEERING Co. Address before: 310004 No. 71, Stadium Road, Hangzhou, Zhejiang Patentee before: HMEI MACHINERY & ENGINEERING Co. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |