CN103643581A - Fine screen - Google Patents
Fine screen Download PDFInfo
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- CN103643581A CN103643581A CN201310750348.8A CN201310750348A CN103643581A CN 103643581 A CN103643581 A CN 103643581A CN 201310750348 A CN201310750348 A CN 201310750348A CN 103643581 A CN103643581 A CN 103643581A
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- rotor
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- screen
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Abstract
The invention relates to a fine screen and belongs to the field of pulping equipment during papermaking. The fine screen comprises a shell, wherein the shell is support by support legs; a conical cover is connected with the upper end of the shell; a screen cylinder is arranged in the center of the shell; a rotor is arranged in the screen cylinder and connected with a drive device through a main shaft driving device; a tail pulp opening is formed in the bottom of the shell; a pulp return opening is formed in the top of the cover; the pulp return opening and the tail pulp opening are connected through a tail pulp circulating pipe. The fine screen has the advantages that through the conical cover and the deslagging circulating pipe, the screening quality and the production efficiency are improved and the service life of the screen cylinder is prolonged; the fine screen is high in removing rate of stickies, high in production efficiency, low in energy consumption, stable and reliable in operation.
Description
Technical field
The present invention relates to a kind of fine screen, belong to paper-making pulping special equipment field.
Background technology
At present, paper industry faces three large problems: 1 there is lack of raw materials, 2 energy shortages, and 3 is seriously polluted.Waste paper is recycled can economize in raw materials, increase production, reduce pollution protection environment, saves the energy and reduces consumption, but in wastepaper as raw material, contain a large amount of impurity.These impurity are to remove by the deslagging screen optional equipment in paper-making pulping line, and the screening degree direct influence of slurry arrives the quality of paper, and then have influence on production efficiency and the profit of enterprise.At the screening stage of various waste paper pulps, unrivaled works fine performance and reliable that pressurized screen has due to himself, become increasing client's first-selected screening installation.Fine screen be in pulping system, be placed in scalping after, the conventional screening installation before paper machine, further selected to the slurry through scalping, remove residually compared with the gluing thing containing in small impurities, thick fiber and waste paper, improve the quality of finished paper, increase client's economic benefit and social benefit.That uses in the market is mostly the fine screen that up-flow, cover are circular configuration.The energy consumption of finding such fine screen in use is large, production efficiency is low, the clearance of gluing thing is low.The rotor of traditional structure, is difficult to make slurry to mix during low cruise, evenly screening, causes the concentration phenomena of slurry serious, and screen cylinder is often stopped up, thus impact production, and production efficiency is low.
Summary of the invention
According to above the deficiencies in the prior art, the object of the invention is to: a kind of fine screen is provided, and the clearance of gluing thing is high, production efficiency is high, energy consumption is low, it is reliable to operate steadily.
Fine screen of the present invention, comprise housing, housing supports by supporting leg, and housing upper end connects cover, and housing center is provided with screen cylinder, rotor is housed in screen cylinder, rotor is by spindle gearing connecting drive device, and housing bottom is provided with tail slurry mouth, and cover is conical, cover top is provided with overfall mouth, and overfall mouth is connected by tail slurry circulation pipe with tail slurry mouth.
By cover is designed to taper shape, increase deslagging circulation pipe, be connected with cover top, the area of low pressure on balance cavity top, makes inside cavity pressure consistent, reduces the impact of alternating pressure to screen frame, extend the service life of screen cylinder, improved screening quality and production efficiency.
Described rotor, comprises rotor body, rotor, and rotor is fixed on rotor body excircle, rotor is comprised of the front portion seamlessly transitting, rear portion, front portion is flat, and rear portion is cylindrical, the anterior and columniform rear portion of flat, when rotor body is rotated, malleation value and negative pressure value between rotor and pressurized screen reduce, and avoid that malleation value is excessive to be caused thick slag through screen cylinder and cause sieve pore blockade, extend the negative pressure working time, screen cylinder is cleaned thoroughly, be beneficial to good slurry and pass through.Anterior and rear portion seamlessly transits, and without winding, hanging phenomenon, occurs.Select suitable blade shape and setting angle, in conjunction with many rotors, staggered rotor structure, strengthened the catharsis of screen cylinder, the concentration phenomena in reducing in dense situation.Meanwhile, lower rotating speed, has reduced the positive pressure pulse that front edges of rotary wings produces, and reduces the impulsive force to impurity, avoids the granular of impurity, avoids gluing thing by sieve, to stitch because of compressive deformation, and removal of impurity is high, and good slurry quality is good.
Before described rotor outside, the angle of negative pressuren zone working face and screen cylinder is 30 °～90 °, and the angle of rear negative pressuren zone working face and screen cylinder is 10 °～20 °.By the angle of negative pressuren zone and screen cylinder is rationally set, make negative pressure longevity of service, good to backwater suction effect, screen cylinder is played to good cleaning action, avoid fibrous mass to hang and be attached on screen cylinder.
Described screen cylinder comprises drum surface and is arranged on the reinforcing ring of drum surface excircle, and reinforcing ring is comprised of annular flake, along screen cylinder, is axially evenly arranged.Reduce all thick of reinforcing ring, increased drum surface percent opening, the throughput of good slurry in unit are is increased.Broadening the contact-making surface of rotor, vacuum draw length is increased, make when malleation the large water gaging by sieve aperture turn back to again into slurry side when underbalance pulse, good like this slurry is consistent along the concentration of screen cylinder, greatly reduced the enrichment phenomenon on screen cylinder surface, the concentration of entering slurry, good slurry, tail slurry is consistent substantially.Network of fibers cock body is difficult for forming, and good slurry can pass through screen cylinder fast, thereby has guaranteed the good slurry throughput of screen cylinder, more effective deslagging.
Described drum surface comprises some wedge shape rods of longitudinal arrangement, and two ends, rod cross section all have lozenges, and flow channel is more reasonable, can reduce fluid resistance, reduce screenings cocnentration factor, reduce sieve plate and stop up, reduce fiber loss, improve forward production capacity and reverse cleansing power.Combine with many rotors, slow-speed of revolution blade, can reduce rotor speed, realize gentle screening, reach the object that reduces energy consumption and improve screening effeciency.
Described screen cylinder is fixed on housing by screen cylinder pressure ring.
Described spindle gearing is fixed on housing by the support of bearing, and housing top is provided with stock inlet, and lower housing portion is provided with good slurry mouthful, and housing bottom arranges seal water system, and cover top arranges hanger.Hanger can facilitate the dismounting of cover, is convenient to the maintenance of the cleaning of device interior, the replacing of screen cylinder and equipment.The lubricated panel of seal water system is fixed on the base plate of housing, by pipeline, is connected respectively with metal (upper with mechanical seal, guarantees the normal operation of spindle gearing.
Described drive unit comprises motor, and motor is fixed on electric machine support, and electric machine support bottom is fixed on end rail, and motor is connected with the large belt wheel of spindle gearing by V-belt.By regulating jackscrew to adjust the elasticity of V-belt, and then the normal operation of the equipment of assurance.
Operation principle and process:
This device is whole for adopting outer-flowing type, falling streaming structure, under a complete totally enclosed state, with the equipment of pressure step sizing.Slurry enters in sieve nest from housing top tangent line with certain pressure, and the barricade on process screen cylinder top enters screening area.Under the positive negative pulse stuffing producing at rotor wing rotation and the effect of the pressure differential inside and outside screen cylinder, good pulp fibres is by sieve aperture, and the slurry mouthful of getting married and start a new life is discharged.By the tail slurry of sieve aperture, from tail slurry mouth, do not get rid of.Cover has adopted conical structure, has been connected with tail slurry circulation pipe, balance the pressure in cavity, on the one hand rotor and rotor have adopted the structure of integral type again, have seamlessly transitted, greatly reduced the generation of winding, hanging phenomenon, have strengthened the self-cleaning ability of screen cylinder.Like this, effectively shorten the time of staying in impurity Shai district, reduced the possibility of impurity recycling, improved screening effeciency; Guaranteed that good pulp fibres enters good slurry mouthful by screen cylinder faster; Prevent the damage that heavy seeds causes rotor and screen cylinder, the service life of extension device.
Compared with prior art, the beneficial effect that the present invention has is:
This fine screen by conical cover and deslagging circulation pipe, improves screening quality and production efficiency, has extended the service life of screen cylinder, and the clearance of gluing thing is high, production efficiency is high, energy consumption is low, operate steadily reliable; By tapered rods bar, form undulating path, make flow channel more reasonable, can reduce fluid resistance, reduce screenings cocnentration factor, reduce sieve plate and stop up, reduce fiber loss, improve forward production capacity and reverse cleansing power, realize gentle screening, reach the object that reduces energy consumption and improve screening effeciency; Front portion and rear portion by rotor seamlessly transit, and avoid that malleation value is excessive to be caused thick slag through screen cylinder and cause sieve pore blockade, extend the negative pressure working time, have strengthened the catharsis of screen cylinder, the concentration phenomena in reducing in dense situation; Lower rotating speed, has reduced the positive pressure pulse that front edges of rotary wings produces, and reduces the impulsive force to impurity, avoids the granular of impurity, avoids gluing thing by sieve, to stitch because of compressive deformation, and removal of impurity is high, and good slurry quality is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is rotor plan structure schematic diagram;
Fig. 3 is the main TV structure schematic diagram of rotor;
Fig. 4 is screen cylinder structural representation;
Fig. 5 is screen cylinder plan structure schematic diagram;
Fig. 6 is A place enlarged drawing in Fig. 5.
In figure: 1, cover; 2, housing; 3, screen cylinder pressure ring; 4, screen cylinder; 401, upper flange; 402, drum surface; 403, reinforcing ring; 404, lower flange; 405, rod; 5, rotor; 501, rotor body; 502, rotor; 503, front portion; 504, rear portion; 6, spindle gearing; 7, motor; 8, electric machine support; 9, end rail; 10, regulate jackscrew; 11, V-belt; 12, large belt wheel; 13, supporting leg; 14, seal water system; 15, tail slurry mouth; 16, tail slurry circulation pipe; 17, good slurry mouthful; 18, stock inlet; 19, hanger.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described further.
As shown in Figure 1, this fine screen, comprises housing 2, and housing 2 supports by supporting leg 13, housing 2 upper ends connect cover 1, its top is provided with stock inlet 18, and bottom is provided with good slurry mouth 17, and bottom arranges tail slurry mouth 15 and seal water system 14, cover 1 is conical, its top arranges left and right two hangers 19, and top is provided with overfall mouth, and overfall mouth is connected by tail slurry circulation pipe 16 with tail slurry mouth 15.Housing 2 centers are provided with screen cylinder 4, and rotor 5 is housed in screen cylinder 4, and rotor 5 is by spindle gearing 6 connecting drive devices, and spindle gearing 6 is fixed on housing 2 by the support of bearing.Drive unit comprises motor 7, motor 7 is fixed on electric machine support 8, and electric machine support 8 bottoms are fixed on end rail 9, and motor 7 is connected with the large belt wheel 12 of spindle gearing 6 by V-belt 11, by regulating jackscrew 10 to adjust the elasticity of V-belt 11, and then the normal operation of the equipment of assurance.
As shown in Fig. 2～3, rotor 5 comprises rotor body 501, rotor 502, and rotor 502 is fixed on rotor body 501 excircles, and rotor 502 is comprised of the front portion 503 seamlessly transitting, rear portion 504, and anterior 503 is flat, and rear portion 504 is cylindrical.Before rotor 502 outsides, the angle of negative pressuren zone working face and screen cylinder 4 is 30 °～90 °, and the angle of rear negative pressuren zone working face and screen cylinder 4 is 10 °～20 °.Rotor 502 from top to bottom in the shape of a spiral evenly interlaced arrangement on rotor body 501 excircles, by reasonable Arrangement, slurry is mixed, reduced the generation of concentration phenomena, action of low-voltage pulse quantity increases, screen cylinder self-cleaning ability strengthens, and has guaranteed the throughput of good slurry.
As shown in Fig. 4～6, screen cylinder 4 comprises drum surface 402 and is arranged on the reinforcing ring 403 of drum surface 402 excircles, and reinforcing ring 403 is comprised of annular flake, along screen cylinder 4, is axially evenly arranged.Drum surface 402 comprises some wedge shape rods 405 of longitudinal arrangement, and rod 405 two ends, cross section all have lozenges.Screen cylinder is respectively equipped with upper flange 401, lower flange 404 in two ends Shang Xia 4, and upper flange is connected with screen cylinder pressure ring 3, and screen cylinder pressure ring 3 is fixed on housing 2, and lower flange 404 is fixed on housing 2 bottoms.
The course of work;
Slurry enters in sieve nest from stock inlet 18 tangent lines on housing 2 tops with certain pressure, and the barricade on process screen cylinder 4 tops enters screening area.Rotor 5 rotation under motor 7 drives, under the positive negative pulse stuffing of rotor 502 rotation generations and the effect of the pressure differential inside and outside screen cylinder 4 of rotor 5, good pulp fibres is by the sieve aperture of screen cylinder 4, the slurry mouth 17 of getting married and start a new life is discharged, by the tail slurry of sieve aperture, from tail slurry mouth 15, do not get rid of, then through tail slurry circulation pipe 16, enter the overfall mouth of cover, and reenter screening area and screen, thereby reach best screening effect.
The present invention trys out by the logical slurry in paper plant, aspect the removal of screening effect, production capacity, gluing thing, comparing and be greatly improved with current same kind of domestic equipment, energy consumption obviously reduces, and has reached the level of external same category of device, is the renewal product that domestic pressurized screen is processed recycled pulp.
Claims (8)
1. a fine screen, comprise housing (2), housing (2) supports by supporting leg (13), housing (2) upper end connects cover (1), housing (2) center is provided with screen cylinder (4), rotor (5) is housed in screen cylinder (4), rotor (5) is by spindle gearing (6) connecting drive device, housing (2) bottom is provided with tail slurry mouth (15), it is characterized in that: cover (1) is for conical, cover (1) top is provided with overfall mouth, and overfall mouth is connected by tail slurry circulation pipe (16) with tail slurry mouth (15).
2. fine screen according to claim 1, it is characterized in that: described rotor (5), comprise rotor body (501), rotor (502), rotor (502) is fixed on rotor body (501) excircle, rotor (502) is comprised of the front portion seamlessly transitting (503), rear portion (504), anterior (503) are flat, and rear portion (504) are cylindrical.
3. pressure sieve rotor according to claim 2, is characterized in that: before described rotor (502) outside, the angle of negative pressuren zone working face and screen cylinder (4) is 30 °～90 °, and the angle of rear negative pressuren zone working face and screen cylinder (4) is 10 °～20 °.
4. pressure sieve rotor according to claim 1, it is characterized in that: described screen cylinder (4) comprises drum surface (402) and is arranged on the reinforcing ring (403) of drum surface (402) excircle, reinforcing ring (403) is comprised of annular flake, along screen cylinder (4), is axially evenly arranged.
5. pressure sieve rotor according to claim 4, is characterized in that: described drum surface (402) comprises some wedge shape rods (405) of longitudinal arrangement, and rod (405) two ends, cross section all have lozenges.
6. pressure sieve rotor according to claim 4, is characterized in that: described screen cylinder (4) is fixed on housing (2) by screen cylinder pressure ring (3).
7. according to the arbitrary described pressure sieve rotor of claim 1～6, it is characterized in that: described spindle gearing (6) is fixed on housing (2) by the support of bearing, housing (2) top is provided with stock inlet (18), housing (2) bottom is provided with good slurry mouthful (17), housing (2) bottom arranges seal water system (14), and cover (1) top arranges hanger (19).
8. according to the arbitrary described pressure sieve rotor of claim 1～6, it is characterized in that: described drive unit comprises motor (7), motor (7) is fixed on electric machine support (8), it is upper that electric machine support (8) bottom is fixed on end rail (9), and motor (7) is connected with the large belt wheel (12) of spindle gearing (6) by V-belt (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750348.8A CN103643581B (en) | 2013-12-31 | 2013-12-31 | fine screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750348.8A CN103643581B (en) | 2013-12-31 | 2013-12-31 | fine screen |
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| Publication Number | Publication Date |
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| CN103643581A true CN103643581A (en) | 2014-03-19 |
| CN103643581B CN103643581B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310750348.8A Active CN103643581B (en) | 2013-12-31 | 2013-12-31 | fine screen |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594096A (en) * | 2014-12-22 | 2015-05-06 | 山东晨钟机械股份有限公司 | Rotary drum type screening joint machine |
| CN108411676A (en) * | 2018-05-30 | 2018-08-17 | 山东杰锋机械制造有限公司 | Energy-efficient paper pulp coarse sizing system |
| CN108468245A (en) * | 2018-05-30 | 2018-08-31 | 山东杰锋机械制造有限公司 | Pressurized screen is streamed before a kind of low pulse mesh of outer-flowing type |
| CN109778584A (en) * | 2019-03-29 | 2019-05-21 | 山东杰锋机械制造有限公司 | Special screen for papermaking tail slurry fiber recovery |
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| US5513757A (en) * | 1994-06-02 | 1996-05-07 | Sulzer Papertec Mansfield Inc. | Continuous cut slotted screen basket |
| CN2341385Y (en) * | 1998-04-17 | 1999-10-06 | 刘永昶 | Mixer for edible mushroom raw material |
| CA2221273C (en) * | 1995-05-26 | 2000-04-18 | Cae Screenplates Oy | Screen and method of manufacture |
| CN2570220Y (en) * | 2002-08-19 | 2003-09-03 | 北京东方新强设备制造有限公司 | Lower bogie set for supporting board |
| DE102004051887B3 (en) * | 2004-10-26 | 2005-12-22 | Voith Paper Patent Gmbh | Pressure material sorting system for sieving suspension of fibers in liquid has vessel with tangential entry and narrow gap leading to chamber inside cylindrical sieve containing rotor with paddles |
| CN201633105U (en) * | 2010-03-11 | 2010-11-17 | 罗康林 | Sectionable light partition board forming extruder |
| WO2013083509A1 (en) * | 2011-12-09 | 2013-06-13 | Voith Patent Gmbh | Screen device for screening a fibrous-material suspension |
| CN203034301U (en) * | 2012-12-21 | 2013-07-03 | 浙江华远纸业有限公司 | Open type rotor for paper machine net front screen |
| CN203768725U (en) * | 2013-12-31 | 2014-08-13 | 山东晨钟机械股份有限公司 | Fine screen |
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2013
- 2013-12-31 CN CN201310750348.8A patent/CN103643581B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5513757A (en) * | 1994-06-02 | 1996-05-07 | Sulzer Papertec Mansfield Inc. | Continuous cut slotted screen basket |
| CA2221273C (en) * | 1995-05-26 | 2000-04-18 | Cae Screenplates Oy | Screen and method of manufacture |
| CN2341385Y (en) * | 1998-04-17 | 1999-10-06 | 刘永昶 | Mixer for edible mushroom raw material |
| CN2570220Y (en) * | 2002-08-19 | 2003-09-03 | 北京东方新强设备制造有限公司 | Lower bogie set for supporting board |
| DE102004051887B3 (en) * | 2004-10-26 | 2005-12-22 | Voith Paper Patent Gmbh | Pressure material sorting system for sieving suspension of fibers in liquid has vessel with tangential entry and narrow gap leading to chamber inside cylindrical sieve containing rotor with paddles |
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| CN203034301U (en) * | 2012-12-21 | 2013-07-03 | 浙江华远纸业有限公司 | Open type rotor for paper machine net front screen |
| CN203768725U (en) * | 2013-12-31 | 2014-08-13 | 山东晨钟机械股份有限公司 | Fine screen |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594096A (en) * | 2014-12-22 | 2015-05-06 | 山东晨钟机械股份有限公司 | Rotary drum type screening joint machine |
| CN108411676A (en) * | 2018-05-30 | 2018-08-17 | 山东杰锋机械制造有限公司 | Energy-efficient paper pulp coarse sizing system |
| CN108468245A (en) * | 2018-05-30 | 2018-08-31 | 山东杰锋机械制造有限公司 | Pressurized screen is streamed before a kind of low pulse mesh of outer-flowing type |
| CN108411676B (en) * | 2018-05-30 | 2023-07-18 | 山东杰锋机械制造有限公司 | High-efficiency energy-saving pulp coarse screening system |
| CN108468245B (en) * | 2018-05-30 | 2024-03-26 | 山东杰锋机械制造有限公司 | Outflow type low-pulse net front-flowing pressure screen |
| CN109778584A (en) * | 2019-03-29 | 2019-05-21 | 山东杰锋机械制造有限公司 | Special screen for papermaking tail slurry fiber recovery |
| CN109778584B (en) * | 2019-03-29 | 2023-09-05 | 山东杰锋机械制造有限公司 | Special screen for recovering papermaking tail pulp fibers |
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| Publication number | Publication date |
|---|---|
| CN103643581B (en) | 2016-03-02 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Fine screen Effective date of registration: 20211009 Granted publication date: 20160302 Pledgee: Huantai Shandong rural commercial bank Limited by Share Ltd. Pledgor: SHANDONG CHENZHONG MACHINERY Co.,Ltd. Registration number: Y2021980010397 |
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