CN108286203A - A kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting - Google Patents
A kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting Download PDFInfo
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- CN108286203A CN108286203A CN201810178056.4A CN201810178056A CN108286203A CN 108286203 A CN108286203 A CN 108286203A CN 201810178056 A CN201810178056 A CN 201810178056A CN 108286203 A CN108286203 A CN 108286203A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
- D21D5/023—Stationary screen-drums
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Abstract
The secondary apparatus for screening fibrous suspensions that the present invention provides a kind of to be sieved based on pulping primary dcreening operation and from boosting, main includes the power drive unit being made of motor and main shaft, screen device at the beginning of the pulping be made of filter cylinder and spoiler, by sieve rotor, impeller A and impeller B form from boosting screen device, and the screening the pulp storage device that is made of barrel, screen cylinder, cover A and cover B.Its main feature is that slurry elder generation flow-disturbing shearing-crushing primary dcreening operation, rear cycle is screened from unlifting pressure.The present invention realizes that increasing good paddle is crushed primary dcreening operation by screen device at the beginning of pulping, by realizing that the cycle of slurry is screened from ascending manner pressure from boosting screen device, the filtering and storage that good slurry is realized by screening the pulp storage device, screen device at the beginning of ensureing pulping by power drive unit and the normal work from the screen device that boosts.
Description
Technical field
The present invention relates to a kind of based on pulping primary dcreening operation and from the secondary apparatus for screening fibrous suspensions of boosting sieve, more particularly to one kind is by broken
Just screen device realizes that increasing good paddle is crushed primary dcreening operation to slurry, by the self-loopa ascending manner pressurized screen for realizing slurry from boosting screen device
Choosing, the filtering and storage of good slurry are realized by screening the pulp storage device, by screen device at the beginning of power drive unit guarantee pulping and certainly
The normal work of boosting screen device, belongs to the technical research field of apparatus for screening fibrous suspensions.
Background technology
Pressurized screen is as one of most common equipment in paper industry, mainly by the rotor on rotor in rotary course
In, pressure is generated to the slurry on screen cylinder surface, screen cylinder inside and outside differential pressure is made to increase, slurry passes through screen cylinder；And rotor produces when leaving
Raw negative pressure will play screen cylinder backwash, to ensure that pressurized screen continuously works normally.But since current pressurized screen works
The unicity of mode and structure, causes problems with：First, good slurry low output, slurry group in slurry, long fibrous impurities are screened
Etc. more, good slurry yield is seriously affected；Second is that screening efficiency is low, the screening of pressurized screen relies primarily on the pressure of rotor generation and holds
Continuous slurry supply, but with the increase of slurry screening time and gravity under the action of, make the good slurry in the part in slurry can not and
When screening just accumulate to barrel bottom end, such as fully to screen need to increase the working time, this just causes the screening efficiency of slurry whole
It is relatively low.
Therefore, for the good slurry low output and low screening efficiency of existing pressurized screen generally existing in use the problems such as, answer
Considered from pressurized screen working method and structure, designs good slurry yield height and a kind of high screening the pulp of screening efficiency is set
It is standby.
Invention content
The present invention is directed to the problems such as good slurry low output and low screening efficiency of existing pressurized screen generally existing in use, carries
A kind of a kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting that can effectively solve the above problems is supplied.
The a kind of of the present invention uses following technical scheme based on pulping primary dcreening operation and from the secondary apparatus for screening fibrous suspensions of boosting sieve：
It is a kind of based on pulping primary dcreening operation and from boosting sieve secondary apparatus for screening fibrous suspensions, mainly include power drive unit, pulping primary dcreening operation fill
Set, from boosting screen device and screening the pulp storage device, power drive unit is mounted on screening the pulp storage device, pulping just screen device and
It is sequentially arranged on power drive unit from top to bottom from boosting screen device；The screening the pulp storage device mainly by barrel, screen cylinder,
Cover A and cover B compositions, cover A are stuck on screen cylinder, and screen cylinder is mounted in barrel, and cover A passes through 4 circumferentially uniformly distributed screws
Mounted on the top of the barrel, screen cylinder lower end is equipped with sieve pore, and cover B is mounted on screen cylinder upper end, cover by 4 circumferentially uniformly distributed screws
Slurry inlet is equipped in the middle part of B；The power drive unit is mainly made of motor and main shaft, and main shaft is mounted in barrel bottom end
Portion, main shaft lower end are equipped with motor, and main shaft is multi-diameter shaft；Just screen device is mainly made of filter cylinder and spoiler the pulping, is filtered
Cylinder lower end is mounted on main shaft upper end by sealing ring, and filter cylinder upper end is mounted on by screw between cover and screen cylinder upper surface, filter
Cylinder side is equipped with 2 layers of circumferentially uniformly distributed filter opening, and filter cylinder lower end side is equipped with outlet of slagging tap, and spoiler is located in filter cylinder and is welded on
Main shaft upper end；Described to be mainly made of from boosting screen device sieve rotor, impeller A and impeller B, impeller A is welded on barrel bottom end
On main shaft, the quantity of impeller B is 2, and the inner end of 2 impeller B is respectively welded on the main shaft of impeller A upper end, 2 impeller B's
Outer end is respectively welded at the upper and lower inside of sieve rotor, and rotor is equipped on the outside of sieve rotor.
The barrel is columnar structured, and barrel Basolateral is equipped with 4 circumferentially uniformly distributed pillars, and barrel lower end outside is set
There is good slurry to export；Region is good slurry storage area between screen cylinder and barrel, and good slurry storage area bottom end is equipped with deflector；Screen cylinder is equipped with 6
26 circumferentially uniformly distributed sieve pore of layer, sieve pore is taper type structure and small end face is close to rotor, the large end face diameter value of sieve pore is sieved
2 times of small end face diameter value, screen cylinder upper side are equipped with thick slag exit passageway.
The filter cylinder is lower face in low columnar structured in intermediate high, both sides；Spoiler is in chamfer trapezium structure, is disturbed
Flowing plate side and lower end are equipped with triangle sawtooth, and spoiler quantity is 4 and is circumferentially evenly distributed with.
The sieve rotor is logical tubular construction, and sieve rotor bottom end is inclined outwardly 45 degree, sieves the rotor on the outside of rotor and is equipped with 6
Layer, every layer of rotor quantity are 26 and are circumferentially evenly distributed with that 6 layers of rotor and 6 layers of sieve pore are respectively at sustained height.
The blade bottom edge of the impeller A is horizontal and leaf angle is in 120 degree, and the blade bottom edge of impeller B tilts and blade presss from both sides
Angle is in 150 degree.
The present invention realizes that increasing good paddle is crushed primary dcreening operation, that is, passes through the flow-disturbing in screen device at the beginning of pulping by screen device at the beginning of pulping
Plate and filter cylinder realize the broken shear degradation of slurry and preliminary filtering screening respectively；By realizing following for slurry from boosting screen device
Ring is screened from ascending manner pressure, i.e., is led to from rising by the cycle from impeller A and impeller B realization slurries in boosting screen device
Sieving rotor and rotor realize the pressure screening of slurry；The filtering and storage that good slurry is realized by screening the pulp storage device, that is, pass through
Screen cylinder in screening the pulp storage device realizes the filtering of good slurry, and good slurry is stored by the good slurry storage area between screen cylinder and barrel；Pass through
Power drive unit is spoiler, impeller A, impeller B and sieves the continue working of rotor and provides power, that is, passes through power drive unit
In main shaft by the driving force of motor be transmitted to spoiler, impeller A, impeller B and sieve rotor, ensure pulping just screen device and from rise
Press the normal work of screen device.
The present invention realizes that increasing good paddle is crushed primary dcreening operation, that is, passes through the flow-disturbing in screen device at the beginning of pulping by screen device at the beginning of pulping
Plate and filter cylinder realize the broken shear degradation of slurry and preliminary filtering screening respectively, specially when equipment works, when slurry falls
When feeding cylinder, slurry is introduced into filter cylinder, the broken decomposition slurry of spoiler Stirring under the drive of main shaft, on spoiler
Triangle sawtooth carries out shearing-crushing decomposition to particle, shear degradation is crushed by the stirring of spoiler, by the slurry group in slurry, length
Fiber impurity etc. is decomposed, and the good slurry total amount in slurry is increased, in filtration cartridges by the slurry after broken shear degradation through filter
Hole enters between screen cylinder and sieve rotor, to realize the preliminary filtering screening of slurry, and the thick slag in filter cylinder, through the thick slag in filter cylinder
Outlet discharge.
The bottom end of filter cylinder is designed as intermediate structure high, both sides are low by the present invention, has both prevented slurry from accumulating by this design
Gather filter cylinder bottom, and dishes out in filter cylinder internal tangent convenient for slurry.
The present invention is equipped with 2 layers of circumferentially uniformly distributed filter opening in filter cylinder side, reinforces the preliminary filtering of filter cylinder by this design
Screening efficiency.
The present invention passes through boosting sieve dress certainly by realizing that the cycle of slurry is screened from ascending manner pressure from boosting screen device
Impeller A and impeller B in setting realize that the cycle of slurry from rising, realizes that the pressure of slurry is screened, tool by sieving rotor and rotor
Body is when equipment works, and impeller A rotates under the drive of main shaft, because impeller A is mounted on barrel bottom end, therefore, the leaf of rotation
Wheel A will drive the slurry of barrel bottom end to move outwardly and into sieve internal rotor, and because sieve internal rotor is equipped with upper and lower 2 leaves
Take turns B, then into sieve internal rotor slurry continue to move up under the drive of impeller B, slurry by sieve rotor upper end flow out and again
Into pressure screening next time is carried out between sieve rotor and screen cylinder, sieves the slurry on the outside of rotor and enter under the rotary squeezing of rotor
Sieve pore, the slurry less than sieve diameter enter the areas Liang Jiangcucun through screen cylinder, and the slurry for being unsatisfactory for requiring falls into barrel bottom, to
Complete the pressure screening of slurry.
The present invention is respectively equipped with impeller A and impeller B in sieve rotor lower end and inside, and slurry is both realized by this design
Cycle is from rising, and that realizes slurry is again stirring for broken decomposition, i.e., upward liter is generated to slurry by impeller A and impeller B
Power simultaneously pushes slurry to move up, and impeller A periphery and impeller B lower end areas generate negative pressure because slurry moves up, and the negative pressure at impeller A makes
Screen cylinder and the slurry of sieve rotor lower end are quickly drawn close to impeller A, and the negative pressure at impeller B makes the slurry of the lower ends impeller B be leaned on to impeller B
Hold together, so that slurry is moved up through impeller B and is again introduced between sieve rotor and screen cylinder through sieving rotor upper end, therefore, in impeller A and impeller B
Double action under, realize slurry by entering on the outside of sieve rotor on the inside of sieve rotor, and sieve rotor is again introduced by sieve rotor upper end
The cycle in outside is from ascending motion；Impeller A and impeller B also act as particle the effect for being again stirring for broken decomposition, i.e., impeller A and
The stirring of impeller B makes slurry that rotation ascending motion be presented, and in rotary motion, the particle in slurry will mutually collide broken slurry
It decomposes, to make slurry group, long fibrous impurities in slurry etc. decompose again, more slurries is made to meet sieve as far as possible in a short time
Bulging screening the pulp requirement, improves the screening efficiency of pressurized screen.
The present invention realizes the filtering and storage of good slurry by screening the pulp storage device, that is, passes through the screen cylinder in screening the pulp storage device
The filtering for realizing good slurry stores good slurry by the good slurry storage area between screen cylinder and barrel, specially when equipment works, turns in sieve
On son under the extruding of rotor, the slurry less than sieve pore small end inner diameter enters between screen cylinder and barrel and stores through screen cylinder, to realize
The screening and storage of good slurry in slurry.
The present invention by each layer sieve pore and rotor design in sustained height, by this design realization make extruding slurry quickly into
Enter in sieve pore, improves screening the pulp efficiency.
Sieve pore is designed as taper type structure by the present invention, makes sieve material is clog-free to enter good slurry storage area by this design,
That is the gradual increased sieve pore of sectional area keeps slurry clog-free quickly through improving the screening the pulp efficiency of screen cylinder.
The present invention by power drive unit is spoiler, impeller A, impeller B and sieves the continue working of rotor and provides power,
The driving force of motor is transmitted to by spoiler, impeller A, impeller B and sieve rotor by the main shaft in power drive unit, is ensured
The first screen device of pulping and the normal work from boosting screen device, specially when equipment works, the rotary power that motor generates passes
It is delivered on main shaft, because spoiler is mounted on main shaft upper end, main shaft imparts power to spoiler and ensures that spoiler stirring is broken
Shear degradation particle is normally carried out；Under main shaft, middle-end, main shaft imparts power to impeller A by impeller A and impeller B
With impeller B and ensure that it recycles from ascending motion slurry and is again stirring for broken decomposition；Because sieve rotor welding is in impeller B
The rotary power of outer end, main shaft is transmitted to through impeller B on sieve rotor, ensures that the rotor on sieve rotor normally transports the extruding of slurry
Row.
The beneficial effects of the invention are as follows：Realize that increasing good paddle is crushed primary dcreening operation by screen device at the beginning of pulping, by being sieved from boosting
Device realizes the self-loopa ascending manner pressure screening of slurry, and the filtering and storage of good slurry are realized by screening the pulp storage device, is passed through
Power drive unit ensures pulping just screen device and the normal work from the screen device that boosts.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the partial structurtes schematic top plan view from boost screen device and screening the pulp storage device of the present invention.
Fig. 3 is the partial structurtes schematic top plan view of the first screen device of pulping of the present invention.
Fig. 4 is the structural schematic diagram of the impeller A of the present invention.
Fig. 5 is the structural schematic diagram of the impeller B of the present invention.
Fig. 6 is the main view and left view schematic diagram of the individual blade of the impeller B of the present invention.
Wherein：1, pillar, 2, grout outlet, 3, impeller A, 4, motor, 5, main shaft, 6, barrel, 7, deflector, 8, good starch out
Mouthful, 9, screen cylinder, 10, sieve pore, 11, sieve rotor, 12, rotor, 13, screw, 14, cover A, 15, impeller B, 16, cover B, 17, material
Starch entrance, 18, filter cylinder, 19, filter opening, 20, the outlet of thick slag, 21, spoiler, 22, screw socket.
Specific implementation mode
Embodiment：
As shown in Figure 1, it is a kind of based on pulping primary dcreening operation and from boosting sieve secondary apparatus for screening fibrous suspensions, mainly include power drive unit,
Just screen device, certainly boosting screen device and screening the pulp storage device, power drive unit are mounted on screening the pulp storage device pulping, pulping
It first screen device and is sequentially arranged on power drive unit from top to bottom from the screen device that boosts.
The present invention realizes that increasing good paddle is crushed primary dcreening operation, that is, passes through the flow-disturbing in screen device at the beginning of pulping by screen device at the beginning of pulping
Plate 21 and filter cylinder 18 realize the broken shear degradation of slurry and preliminary filtering screening respectively；By realizing slurry from boosting screen device
Cycle screened from ascending manner pressure, i.e., by from boosting screen device impeller A 3 and impeller B15 realize the cycle of slurry from
Rise, realizes that the pressure of slurry is screened by sieving rotor 11 and rotor 12；By screening the pulp storage device realize good slurry filtering and
Storage, i.e., realized the filtering of good slurry by the screen cylinder 9 in screening the pulp storage device, pass through the good slurry storage area between screen cylinder 9 and barrel 6
Store good slurry；Be spoiler 21 by power drive unit, impeller A 3, impeller B15 and sieve rotor 11 continue working provide it is dynamic
Power, i.e., by the main shaft 5 in power drive unit by the driving force of motor 4 be transmitted to spoiler 21, impeller A 3, impeller B15 and
Rotor 11 is sieved, ensures pulping just screen device and the normal work from the screen device that boosts.
Power drive unit is mainly made of motor 4 and main shaft 5, and main shaft 5 is mounted on 6 center bottom of barrel, 5 lower end of main shaft
Motor 4 is installed, main shaft 5 is multi-diameter shaft.
The present invention is carried by the continue working that power drive unit is spoiler 21, impeller A 3, impeller B15 and sieve rotor 11
For power, i.e., the driving force of motor 4 is transmitted to by spoiler 21, impeller A 3, impeller by the main shaft 5 in power drive unit
B15 and sieve rotor 11 ensure pulping just screen device and the normal work from the screen device that boosts, specially when equipment works, electricity
The rotary power that machine 4 generates is transmitted on main shaft 5, and because spoiler 21 is mounted on 5 upper end of main shaft, main shaft 5, which imparts power to, disturbs
Flowing plate 21 simultaneously ensures that the stirring of spoiler 21 is crushed being normally carried out for shear degradation particle；Impeller A 3 and impeller B15 are mounted on main shaft 5
Under, middle-end, main shaft 5 impart power to impeller A 3 and impeller B15 and ensure its slurry is recycled from ascending motion and
It is again stirring for broken decomposition；Because sieve rotor 11 is welded on the outer ends impeller B15, the rotary power of main shaft 5 is transmitted to sieve through impeller B15
On rotor 11, ensure extruding normal operation of the rotor 12 on sieve rotor 11 to slurry.
In conjunction with shown in Fig. 2, screening the pulp storage device is mainly made of barrel 6, screen cylinder 9, cover A14 and cover B16, cover
A14 is stuck on screen cylinder 9, and screen cylinder 9 is mounted in barrel 6, and cover A14 is mounted on by 4 circumferentially uniformly distributed screws 13 on barrel 6
End, 9 lower end of screen cylinder are equipped with sieve pore 10, and cover B16 is mounted on 9 upper end of screen cylinder, cover B16 by 4 circumferentially uniformly distributed screws 13
Middle part is equipped with slurry inlet 17.
Barrel 6 is columnar structured, and 6 Basolateral of barrel is equipped with 4 circumferentially uniformly distributed pillars 1, and 6 lower end outside of barrel is set
There is good slurry outlet 8；Region is good slurry storage area between screen cylinder 9 and barrel 6, and good slurry storage area bottom end is equipped with deflector 7；On screen cylinder 9
Equipped with 6 layers 26 circumferentially uniformly distributed sieve pores 10, sieve pore 10 is taper type structure and small end face close to sieve rotor 11, sieve pore 10 it is big
End face diameter value is 2 times of small end face diameter value, and 9 upper side of screen cylinder is equipped with thick slag and exports 20 channels.
The present invention realizes the filtering and storage of good slurry by screening the pulp storage device, that is, passes through the screen cylinder in screening the pulp storage device
9 realize the filtering of good slurry, and good slurry is stored by the good slurry storage area between screen cylinder 9 and barrel 6, specially when equipment works,
It sieves on rotor 11 under the extruding of rotor 12, the slurry less than 10 small end inner diameter of sieve pore enters between screen cylinder 9 and barrel 6 simultaneously through screen cylinder 9
Storage, to realize the screening and storage of good slurry in slurry.
Each layer sieve pore 10 and rotor 12 are designed at sustained height by the present invention, keep extruding slurry fast by this design realization
Speed enters in sieve pore 10, improves screening the pulp efficiency.
Sieve pore 10 is designed as taper type structure by the present invention, makes sieve material is clog-free to enter the storage of good slurry by this design
The gradual increased sieve pore 10 in area, i.e. sectional area keeps slurry clog-free quickly through improving the screening the pulp efficiency of screen cylinder 9.
In conjunction with shown in Fig. 3, just screen device is mainly made of filter cylinder 18 and spoiler 21 pulping, and 18 lower end of filter cylinder passes through sealing
Circle be mounted on 5 upper end of main shaft, 18 upper end of filter cylinder by screw 13 be mounted on 9 upper surface of cover and screen cylinder between, 18 side of filter cylinder
Equipped with 2 layers of circumferentially uniformly distributed filter opening 19,18 lower end side of filter cylinder is equipped with outlet of slagging tap, and spoiler 21 is located in filter cylinder 18 and welds
In 5 upper end of main shaft.
Filter cylinder 18 is lower face in low columnar structured in intermediate high, both sides；Spoiler 21 is in chamfer trapezium structure, is disturbed
21 side of flowing plate and lower end are equipped with triangle sawtooth, and 21 quantity of spoiler is 4 and is circumferentially evenly distributed with.
The present invention realizes that increasing good paddle is crushed primary dcreening operation, that is, passes through the flow-disturbing in screen device at the beginning of pulping by screen device at the beginning of pulping
Plate 21 and filter cylinder 18 realize that the broken shear degradation of slurry and preliminary filtering screening work as material specially when equipment works respectively
When slurry pours into barrel 6, slurry is introduced into filter cylinder 18, and the Stirring under the drive of main shaft 5 of spoiler 21 is broken to decompose slurry,
Triangle sawtooth on spoiler 21 carries out shearing-crushing decomposition to particle, and shear degradation is crushed by the stirring of spoiler 21, will
Slurry group, long fibrous impurities in slurry etc. are decomposed, and the good slurry total amount in slurry is increased, and pass through broken shearing in filter cylinder 18
Slurry after decomposition enters through filter opening 19 between screen cylinder 9 and sieve rotor 11, to realize the preliminary filtering screening of slurry, and filter cylinder 18
In thick slag, through in filter cylinder 18 thick slag outlet 20 discharge.
The bottom end of filter cylinder 18 is designed as intermediate structure high, both sides are low by the present invention, and slurry is both prevented by this design
18 bottom of filter cylinder is accumulated to, and is dished out in 18 internal tangent of filter cylinder convenient for slurry.
The present invention is equipped with 2 layers of circumferentially uniformly distributed filter opening 19 in 18 side of filter cylinder, reinforces the first of filter cylinder 18 by this design
Walk filtering screening efficiency.
In conjunction with shown in Fig. 4, Fig. 5 and Fig. 6, from boosting, screen device is mainly made of sieve rotor 11, impeller A 3 and impeller B15,
Impeller A 3 is welded on the main shaft 5 of 6 bottom end of barrel, and the quantity of impeller B15 is 2, and the inner end of 2 impeller B15 is respectively welded at
On the main shaft 5 of 3 upper end of impeller A, the outer end of 2 impeller B15 is respectively welded at the upper and lower inside of sieve rotor 11,11 outside of sieve rotor
Equipped with rotor 12.
It is logical tubular construction to sieve rotor 11, and 11 bottom end of sieve rotor is inclined outwardly 45 degree, and the rotor 12 in 11 outside of sieve rotor is set
There are 6 layers, every layer of 12 quantity of rotor is 26 and is circumferentially evenly distributed with that 6 layers of rotor 12 and 6 layers of sieve pore 10 are respectively at sustained height.
The blade bottom edge of impeller A 3 is horizontal and leaf angle is in 120 degree, and the blade bottom edge of impeller B15 tilts and leaf angle
In 150 degree.
The present invention passes through boosting sieve dress certainly by realizing that the cycle of slurry is screened from ascending manner pressure from boosting screen device
Impeller A 3 and impeller B15 in setting realize that from rising, the pressure of slurry is realized by sieving rotor 11 and rotor 12 for the cycle of slurry
Screening, specially when equipment works, impeller A 3 rotates under the drive of main shaft 5, because impeller A 3 is mounted on 6 bottom end of barrel, because
This, the impeller A 3 of rotation will drive the slurry of 6 bottom end of barrel to move outwardly and into inside sieve rotor 11, and because in sieve rotor 11
Portion is equipped with upper and lower 2 impeller B15, then continues to move up under the drive of impeller B15 into the slurry inside sieve rotor 11, slurry
It is flowed out by 11 upper end of sieve rotor and is again introduced between sieve rotor 11 and screen cylinder 9 and carry out pressure screening next time, sieve outside rotor 11
The slurry of side enters sieve pore 10 under the rotary squeezing of rotor 12, and the slurry for being less than 10 diameter of sieve pore enters good slurry slightly through screen cylinder 9
Area is deposited, the slurry for being unsatisfactory for requiring falls into 6 bottom of barrel, to complete the pressure screening of slurry.
The present invention is respectively equipped with impeller A 3 and impeller B15 in sieve 11 lower end of rotor and inside, has both been realized by this design
The cycle of slurry is from rising, and that realizes slurry is again stirring for broken decomposition, i.e., is generated to slurry by impeller A 3 and impeller B15
Upward lift simultaneously pushes slurry to move up, and 3 periphery of impeller A and impeller B15 lower end areas generate negative pressure because slurry moves up, impeller
Negative pressure at A3 makes the slurry of 11 lower end of screen cylinder 9 and sieve rotor quickly be drawn close to impeller A 3, and the negative pressure at impeller B15 makes impeller
The slurry of the lower ends B15 is drawn close to impeller B15, so that slurry is moved up through impeller B15 and is again introduced into sieve rotor through sieving 11 upper end of rotor
Between 11 and screen cylinder 9, therefore, under the double action of impeller A 3 and impeller B15, realize that slurry enters sieve by 11 outside of sieve rotor and turns
11 inside of son, and the cycle on the outside of sieve rotor 11 is again introduced into from ascending motion by 11 upper end of sieve rotor；Impeller A 3 and impeller B15
The effect for being again stirring for broken decomposition is also acted as to particle, i.e. the stirring of impeller A 3 and impeller B15 make slurry that rotation rising be presented
Movement, for slurry in rotary motion, the particle in slurry will mutually collide broken decomposition, to make slurry group in slurry, long fine
Dimension impurity etc. decomposes again, so that more slurries is met the screening the pulp requirement of screen cylinder 9 as far as possible in a short time, improves the sieve of pressurized screen
Select efficiency.
Claims (5)
1. it is a kind of based on pulping primary dcreening operation and from the secondary apparatus for screening fibrous suspensions of boosting sieve, include mainly power drive unit, pulping primary dcreening operation
Device, certainly boosting screen device and screening the pulp storage device, power drive unit are mounted on screening the pulp storage device, the first screen device of pulping
It is sequentially arranged on power drive unit from top to bottom with from boosting screen device；It is characterized in that：The screening the pulp storage device master
It to be made of barrel, screen cylinder, cover A and cover B, cover A is stuck on screen cylinder, and screen cylinder is mounted in barrel, and cover A passes through 4
Circumferentially uniformly distributed screw is mounted on the top of the barrel, and screen cylinder lower end is equipped with sieve pore, and cover B is installed by 4 circumferentially uniformly distributed screws
Slurry inlet is equipped in the middle part of screen cylinder upper end, cover B；The power drive unit is mainly made of motor and main shaft, main shaft peace
Mounted in barrel center bottom, main shaft lower end is equipped with motor, and main shaft is multi-diameter shaft；The pulping just screen device mainly by filter cylinder and
Spoiler forms, and filter cylinder lower end is mounted on main shaft upper end by sealing ring, and filter cylinder upper end is mounted on cover and screen cylinder by screw
Between upper surface, filter cylinder side is equipped with 2 layers of circumferentially uniformly distributed filter opening, and filter cylinder lower end side is equipped with outlet of slagging tap, and spoiler is located at
In filter cylinder and it is welded on main shaft upper end；It is described to be mainly made of from boosting screen device sieve rotor, impeller A and impeller B, impeller A weldering
It is connected on the main shaft of barrel bottom end, the quantity of impeller B is 2, and the inner end of 2 impeller B is respectively welded at the main shaft of impeller A upper end
On, the outer end of 2 impeller B is respectively welded at the upper and lower inside of sieve rotor, and rotor is equipped on the outside of sieve rotor.
2. a kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting as described in claim 1, it is characterised in that：Institute
It is columnar structured to state barrel, and barrel Basolateral is equipped with 4 circumferentially uniformly distributed pillars, and barrel lower end outside is equipped with good starch out
Mouthful；Region is good slurry storage area between screen cylinder and barrel, and good slurry storage area bottom end is equipped with deflector；Screen cylinder is equipped with 6 layers of 26 week
To uniformly distributed sieve pore, sieve pore is taper type structure and the close sieve rotor of small end face, and the large end face diameter value of sieve pore is that small end face is straight
2 times of diameter value, screen cylinder upper side are equipped with thick slag exit passageway.
3. a kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting as described in claim 1, it is characterised in that：Institute
It is lower face in low columnar structured in intermediate high, both sides to state filter cylinder；Spoiler be in chamfer trapezium structure, spoiler side and
Lower end is equipped with triangle sawtooth, and spoiler quantity is 4 and is circumferentially evenly distributed with.
4. a kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting as described in claim 1, it is characterised in that：Institute
It is logical tubular construction to state sieve rotor, and sieve rotor bottom end is inclined outwardly 45 degree, sieves the rotor on the outside of rotor and is equipped with 6 layers, every layer of rotor
Quantity is 26 and is circumferentially evenly distributed with that 6 layers of rotor and 6 layers of sieve pore are respectively at sustained height.
5. a kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting as described in claim 1, it is characterised in that：Institute
The blade bottom edge level and leaf angle for stating impeller A are in 120 degree, and the blade bottom edge of impeller B tilts and leaf angle is in 150 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810178056.4A CN108286203A (en) | 2018-03-05 | 2018-03-05 | A kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810178056.4A CN108286203A (en) | 2018-03-05 | 2018-03-05 | A kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108286203A true CN108286203A (en) | 2018-07-17 |
Family
ID=62833514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810178056.4A Pending CN108286203A (en) | 2018-03-05 | 2018-03-05 | A kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108286203A (en) |
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2018
- 2018-03-05 CN CN201810178056.4A patent/CN108286203A/en active Pending
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Application publication date: 20180717 |