CN207919232U - A kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting - Google Patents

Abstract

The utility model provides a kind of secondary apparatus for screening fibrous suspensions 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 utility model 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

A kind of secondary apparatus for screening fibrous suspensions sieved based on pulping primary dcreening operation and from boosting

Technical field

It is based on pulping primary dcreening operation and logical from the secondary apparatus for screening fibrous suspensions of boosting sieve, more particularly to one kind that the utility model is related to a kind of Crossing pulping, just screen device realizes that increasing good paddle is crushed primary dcreening operation, by the self-loopa ascending manner pressure for realizing slurry from boosting screen device Screening, the filtering and storage of good slurry are realized by screening the pulp storage device, by power drive unit ensure pulping at the beginning of screen device and From the normal work of boosting screen device, belong 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 utility model low etc. is asked for the good slurry low output and screening efficiency of existing pressurized screen generally existing in use Topic provides 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.

The a kind of of the utility model uses following technical scheme based on pulping primary dcreening operation and from the secondary apparatus for screening fibrous suspensions of boosting sieve：

A kind of secondary apparatus for screening fibrous suspensions based on pulping primary dcreening operation and oneself boosting sieve, at the beginning of mainly including power drive unit, pulping Screen device, certainly boosting screen device and screening the pulp storage device, power drive unit are mounted on screening the pulp storage device, pulping primary dcreening operation dress It sets and 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 is circumferentially uniformly distributed by 4 Screw is mounted on the top of the barrel, and screen cylinder lower end is equipped with sieve pore, and cover B is mounted on screen cylinder upper end by 4 circumferentially uniformly distributed screws, Slurry inlet is equipped in the middle part of cover B；The power drive unit is mainly made of motor and main shaft, and main shaft is mounted on barrel bottom end Middle part, 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, Filter 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 welds In 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 Main shaft on, 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 Outer end be respectively welded at sieve rotor upper and lower inside, be equipped with rotor 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 utility model realizes that increasing good paddle is crushed primary dcreening operation by screen device at the beginning of pulping, i.e., by screen device at the beginning of pulping Spoiler and filter cylinder 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 the cycle of impeller A and impeller B realization slurry in boosting screen device from upper It rises, realizes that the pressure of slurry is screened by sieving rotor and rotor；The filtering and storage of good slurry are realized by screening the pulp storage device, i.e., The filtering that good slurry is realized by the screen cylinder in screening the pulp storage device stores good slurry by the good slurry storage area between screen cylinder and barrel； Be spoiler by power drive unit, impeller A, impeller B and sieve rotor continue working power is provided, that is, pass through power drive The driving force of motor is transmitted to spoiler, impeller A, impeller B and sieve rotor by main shaft in device, ensure pulping just screen device and From the normal work of boosting screen device.

The utility model realizes that increasing good paddle is crushed primary dcreening operation by screen device at the beginning of pulping, i.e., by screen device at the beginning of pulping Spoiler and filter cylinder 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, slurry is introduced into filter cylinder, and spoiler Stirring under the drive of main shaft is broken to decompose slurry, spoiler On triangle sawtooth shearing-crushing decomposition is carried out to particle, shear degradation is crushed by the stirring of spoiler, by the slurry in slurry Group, long fibrous impurities etc. are decomposed, and the good slurry total amount in slurry is increased, and pass through the slurry after broken shear degradation in filtration cartridges Enter between screen cylinder and sieve rotor through filter opening, to realize the preliminary filtering screening of slurry, and the thick slag in filter cylinder, through in filter cylinder Thick slag outlet discharge.

The bottom end of filter cylinder is designed as intermediate structure high, both sides are low by the utility model, both prevents from expecting by this design Slurry accumulates to filter cylinder bottom, and dishes out in filter cylinder internal tangent convenient for slurry.

The utility model is equipped with 2 layers of circumferentially uniformly distributed filter opening in filter cylinder side, reinforces the preliminary of filter cylinder by this design Filtering screening efficiency.

The utility model from boosting screen device by realizing that the cycle of slurry is screened from ascending manner pressure, i.e., by boosting certainly Impeller A and impeller B in screen device realize that from rising, the pressurized screen of slurry is realized by sieving rotor and rotor for the cycle of slurry Choosing, specially when equipment works, impeller A rotates under the drive of main shaft, because impeller A is mounted on barrel bottom end, therefore, rotation Impeller A the slurry of barrel bottom end will be driven to move outwardly and into sieve internal rotor, and because sieve internal rotor is equipped with upper and lower 2 A impeller B then continues to move up into the slurry of sieve internal rotor under the drive of impeller B, and slurry is flowed out simultaneously by sieve rotor upper end It is again introduced between sieve rotor and screen cylinder and carries out pressure screening next time, sieve the slurry on the outside of rotor under the rotary squeezing of rotor Into sieve pore, the slurry less than sieve diameter enters 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 utility model is respectively equipped with impeller A and impeller B in sieve rotor lower end and inside, and material had 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 and impeller B upward Lift and push slurry to move up, impeller A periphery and impeller B lower end areas generate negative pressure because slurry moves up, negative at impeller A Pressure makes screen cylinder and sieves the slurry of rotor lower end quickly to draw close to impeller A, and the negative pressure at impeller B makes the slurries of the lower ends impeller B to leaf Wheel B is drawn close, and slurry is made to move up through impeller B and be again introduced between sieve rotor and screen cylinder through sieving rotor upper end, therefore, in impeller A and Under the double action of impeller B, slurry is realized by entering on the outside of sieve rotor on the inside of sieve rotor, and sieve is again introduced by sieve rotor upper end Cycle on the outside of rotor is from ascending motion；Impeller A and impeller B also act as particle the effect for being again stirring for broken decomposition, i.e. leaf The stirring of wheel A and impeller B makes slurry that rotation ascending motion be presented, and in rotary motion, the particle in slurry will be touched mutually slurry Broken decomposition is crashed through, to make slurry group, long fibrous impurities in slurry etc. decompose again, makes more slurries in a short time as far as possible The screening the pulp requirement for meeting screen cylinder, improves the screening efficiency of pressurized screen.

The utility model realizes the filtering and storage of good slurry by screening the pulp storage device, i.e., by screening the pulp storage device Screen cylinder realizes the filtering of good slurry, and good slurry is stored by the good slurry storage area between screen cylinder and barrel, specially when equipment works, It sieving on rotor 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.

Each layer sieve pore and rotor design in sustained height, are kept extruding slurry fast by the utility model by this design realization Speed enters in sieve pore, improves screening the pulp efficiency.

Sieve pore is designed as taper type structure by the utility model, makes sieve material is clog-free to enter the storage of good slurry by this design The gradual increased sieve pore in area, i.e. sectional area keeps slurry clog-free quickly through improving the screening the pulp efficiency of screen cylinder.

The utility model by power drive unit is spoiler, impeller A, impeller B and sieves the continue working of rotor and provides The driving force of motor is transmitted to spoiler, impeller A, impeller B and sieve by the main shaft in power drive unit and turned by power Son ensures pulping just screen device and the normal work from the screen device that boosts, specially when equipment works, the rotation of motor generation Power is transmitted on main shaft, and because spoiler is mounted on main shaft upper end, main shaft imparts power to spoiler and ensures that spoiler stirs Mix being normally carried out for broken shear degradation particle；Under main shaft, middle-end, main shaft imparts power to by impeller A and impeller B Impeller A and impeller B simultaneously ensure that it recycles from ascending motion slurry and is again stirring for broken decomposition；Because sieve rotor welding exists The rotary power of the outer ends impeller B, main shaft is transmitted to through impeller B on sieve rotor, ensures extruding of the rotor on sieve rotor to slurry Normal operation.

The utility model has the beneficial effects that：Realize that increasing good paddle is crushed primary dcreening operation by screen device at the beginning of pulping, by rising certainly It presses screen device to realize the self-loopa ascending manner pressure screening of slurry, the filtering and storage of 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 of the drawings

Fig. 1 is the overall structure diagram of the utility model.

Fig. 2 is the partial structurtes schematic top plan view from boost screen device and screening the pulp storage device of the utility model.

Fig. 3 is the partial structurtes schematic top plan view of the first screen device of pulping of the utility model.

Fig. 4 is the structural schematic diagram of the impeller A of the utility model.

Fig. 5 is the structural schematic diagram of the impeller B of the utility model.

Fig. 6 is the main view and left view schematic diagram of the individual blade of the impeller B of the utility model.

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 the secondary apparatus for screening fibrous suspensions of boosting sieve, include mainly that power drive fills It sets, screen device, certainly boosting screen device and screening the pulp storage device at the beginning of pulping, power drive unit is mounted on screening the pulp storage device, Pulping just screen device and from boost screen device be sequentially arranged on power drive unit from top to bottom.

The utility model realizes that increasing good paddle is crushed primary dcreening operation by screen device at the beginning of pulping, i.e., by screen device at the beginning of pulping Spoiler 21 and filter cylinder 18 realize the broken shear degradation of slurry and preliminary filtering screening respectively；By being realized from boosting screen device The cycle of slurry is screened from ascending manner pressure, i.e., by from boosting screen device impeller A 3 and impeller B15 realize following for slurry Ring realizes that the pressure of slurry is screened from rising, by sieving rotor 11 and rotor 12；The mistake of good slurry is realized by screening the pulp storage device Filter and storage, i.e., realize the filtering of good slurry by the screen cylinder 9 in screening the pulp storage device, is stored up by the good slurry between screen cylinder 9 and barrel 6 It deposits area and stores good slurry；It 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.

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 utility model is spoiler 21, impeller A 3, impeller B15 and the lasting work for sieving rotor 11 by power drive unit Offer power is provided, i.e., the driving force of motor 4 is transmitted to by spoiler 21, impeller A 3, leaf by the main shaft 5 in power drive unit B15 and sieve rotor 11 are taken turns, ensures pulping just screen device and the normal work from the screen device that boosts, specially when equipment works, The rotary power that motor 4 generates is transmitted on main shaft 5, and because spoiler 21 is mounted on 5 upper end of main shaft, main shaft 5 imparts power to Spoiler 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 master Under axis 5, middle-end, main shaft 5 imparts power to impeller A 3 and impeller B15 and ensures that it recycles from ascending motion slurry Be 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 through impeller B15 It sieves on rotor 11, ensures 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 utility model realizes the filtering and storage of good slurry by screening the pulp storage device, i.e., by screening the pulp storage device Screen cylinder 9 realizes 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 When, on sieve rotor 11 under the extruding of rotor 12, the slurry for being less than 10 small end inner diameter of sieve pore enters screen cylinder 9 and barrel 6 through screen cylinder 9 Between and store, 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 utility model, make pressing material by this design realization Slurry rapidly enters in sieve pore 10, improves screening the pulp efficiency.

Sieve pore 10 is designed as taper type structure by the utility model, makes sieve material is clog-free to enter the storage of good slurry by this design It deposits area, i.e. the gradual increased sieve pore 10 of 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 utility model realizes that increasing good paddle is crushed primary dcreening operation by screen device at the beginning of pulping, i.e., by screen device at the beginning of pulping Spoiler 21 and filter cylinder 18 realize the broken shear degradation of slurry and preliminary filtering screening respectively, specially when equipment works, 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 be decomposed Slurry, the triangle sawtooth on spoiler 21 carry out shearing-crushing decomposition to particle, pass through the broken shearing point of stirring of spoiler 21 Solution, slurry group, the long fibrous impurities etc. in slurry are decomposed, and increase the good slurry total amount in slurry, by broken in filter cylinder 18 Slurry after broken shear degradation enters through filter opening 19 between screen cylinder 9 and sieve rotor 11, to realize the preliminary filtering screening of slurry, and Thick slag in filter cylinder 18, through 20 discharge of thick slag outlet in filter cylinder 18.

The bottom end of filter cylinder 18 is designed as intermediate structure high, both sides are low by the utility model, has both been prevented by this design Slurry accumulates to 18 bottom of filter cylinder, and dishes out in 18 internal tangent of filter cylinder convenient for slurry.

The utility model is equipped with 2 layers of circumferentially uniformly distributed filter opening 19 in 18 side of filter cylinder, reinforces filter cylinder 18 by this design Preliminary 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 utility model from boosting screen device by realizing that the cycle of slurry is screened from ascending manner pressure, i.e., by boosting certainly Impeller A 3 and impeller B15 in screen device realize that from rising, slurry is realized by sieving rotor 11 and rotor 12 for the cycle of slurry Pressure is screened, and specially when equipment works, impeller A 3 rotates under the drive of main shaft 5, because impeller A 3 is mounted on 6 bottom of barrel End, therefore, 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 sieve turns Son 11 is internally provided with upper and lower 2 impeller B15, then continue under the drive of impeller B15 into the slurry inside sieve rotor 11 on It moves, slurry, which is flowed out by 11 upper end of sieve rotor and is again introduced between sieve rotor 11 and screen cylinder 9, carries out pressure screening next time, and sieve turns The slurry in 11 outside of son enters sieve pore 10 under the rotary squeezing of rotor 12, and the slurry for being less than 10 diameter of sieve pore enters through screen cylinder 9 The areas Liang Jiangcucun, the slurry for being unsatisfactory for requiring fall into 6 bottom of barrel, to complete the pressure screening of slurry.

The utility model is respectively equipped with impeller A 3 and impeller B15 in sieve 11 lower end of rotor and inside, both by this design The cycle of slurry is realized from rising, and that realizes slurry is again stirring for broken decomposition, i.e., by impeller A 3 and impeller B15 to slurry It generating upward lift and slurry is pushed to move up, 3 periphery of impeller A and impeller B15 lower end areas generate negative pressure because slurry moves up, Negative pressure at impeller A 3 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 leaf The slurry of the lower ends wheel B15 is drawn close to impeller B15, so that slurry is moved up through impeller B15 and is again introduced into sieve turn through sieving 11 upper end of rotor Between son 11 and screen cylinder 9, therefore, under the double action of impeller A 3 and impeller B15, realizes that slurry is entered by 11 outside of sieve rotor and sieve 11 inside of rotor, 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 also acts as particle the effect for being again stirring for broken decomposition, i.e. the stirring of impeller A 3 and impeller B15 make slurry present in rotation Elevator is dynamic, and for slurry in rotary motion, the particle in slurry will mutually collide broken decomposition, to make slurry group in slurry, length Fiber 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 pressurized screen Screening 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.