CN101550661B - Impeller-type paper pulp sparger at bottom of upward flow bleaching tower - Google Patents
Impeller-type paper pulp sparger at bottom of upward flow bleaching tower Download PDFInfo
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- CN101550661B CN101550661B CN2009100392562A CN200910039256A CN101550661B CN 101550661 B CN101550661 B CN 101550661B CN 2009100392562 A CN2009100392562 A CN 2009100392562A CN 200910039256 A CN200910039256 A CN 200910039256A CN 101550661 B CN101550661 B CN 101550661B
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- impeller
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- type paper
- bleaching tower
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The present invention discloses impeller-type paper pulp sparger at bottom of upward flow bleaching tower, including impeller, conic node, feed compartment, upper bearing, impeller shaft, lower bearing, coupling and variable frequency motor; the impeller shaft is connected with the variable frequency motor via the coupling, the impeller is composed of blades that is smooth and evasive, without edge angle and semi-propeller shaped; a plurality of blades monoque composes the smooth flat upper surface, of which the central position is connected with the conic node; lower surface of the impeller that composed of a plurality of blades is divided into a plurality of semi-propeller shaped stock flow admission channels, of which the outermost end is stock outlet; the impeller shaft is connected with the conic node; peak of the conic node shapes sphere and harmonious in the whole. The invention employs variable frequency motor to control impeller rotation, making the paper pulp centrifuge in channels of the impeller, catching energy when centrifugation out and give the feed solution driving force again; and the paper pulp is distributed more uniformly through the helical flow channels without phenomenon of channeling, refluxing and fluid separation.
Description
Technical field
The present invention relates to the paper pulp distributor in the pulping and paper-making, specifically relate to the impeller-type paper pulp distributor at the bottom of a kind of up-flow bleaching tower.
Background technology
At present, distributor mainly is divided into and does not have two kinds of pulp distributors at the bottom of pulp distributor and tower being arranged at the bottom of the tower at the bottom of the up-flow bleaching tower of China.Pulp distributor is used on dome head or the ellipse end socket at the bottom of the tower.Do not have pulp distributor at the bottom of the tower and at the bottom of tower, adopt conical head.For the bleaching tower of diameter less than 2.0m～2.5m, for the investment and the reduction operating cost of saving pulp distributor, usually adopt the bleaching tower of no pulp distributor, adopt the end socket form of taper flaring at the bottom of its tower, but the semi-cone angle of end socket can not surpass 30 °, otherwise the phenomenon that backflow separates with fluid in the end socket is more serious.If the semi-cone angle of tower base cone shape end socket is too small, the height of end socket can increase, and can increase the height of whole tower like this, has just increased manufacturing cost.Up-flow bleaching tower for pulp distributor is arranged at the bottom of the tower generally adopts ellipsoidal head, the way that multitube advances together.In fact be exactly that cloth slurry pipe becomes equilateral triangle arrange that allowing into, the paper pulp of slurry enters in the tower uniformly.The tower little for diameter adopts the taper gradual-enlargement type, and this method is improper fully to big tower.The tower that diameter is big adopts multitube to advance together, though can make slurry dispense even relatively, does not also consume energy.But the domestic following shortcoming of pulp distributor ubiquity: (1) enters from a fixing place owing to slurry, so there is significant limitation the distributed areas of paper pulp; (2) because slurries become a plurality of little slurry pipes from a big slurry pipe, caliber dwindles more, causes the plug material easily.(3) this fixed location feed process will produce channeling.4) owing to reasons such as gravity might produce the phenomenon that refluxes and separate with fluid.
The pulp distributor of external SUNDS company is evenly to distribute at the bottom of tower by paper pulp by two runners that rotate.Paper pulp enters the following pipe that there is the three-way pipe of dividing plate isolation a centre, and shunting enters the left and right sides tube passage of band dividing plate then.Transmission system is arranged at the bleaching tower bottom, drives the three-way pipe rotation, and paper pulp is just made centrifugal motion from the runner of left and right sides tube passage, enters bleaching action in the tower.This bleaching tower base stock slurry distributor makes the paper pulp distribution ratio more evenly and not can produce channeling, but energy consumption is bigger.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the impeller-type paper pulp distributor at the bottom of the up-flow bleaching tower that a kind of cloth is even, the suffered resistance of slurry is little and energy-conservation is provided.
Purpose of the present invention is achieved through the following technical solutions:
Impeller-type paper pulp distributor at the bottom of the up-flow bleaching tower comprises feed space, upper bearing (metal), impeller shaft, lower bearing, shaft coupling and variable-frequency motor; Impeller shaft is connected with variable-frequency motor by shaft coupling, is provided with upper bearing (metal) and lower bearing on the impeller shaft of the upper end of shaft coupling from top to bottom successively; Feed space is welded on the end socket at the bottom of the bleaching tower, is connected with impeller shaft; Described impeller-type paper pulp distributor also comprises the impeller and the vertex of a cone, and described impeller is made up of the multi-disc blade, the blade slyness, and no corner angle are semi-spiral oar shape; The one-body molded composition smooth flat upper surface of multi-disc blade, the upper surface center connects the vertex of a cone; The impeller lower surface that the multi-disc blade forms is separated to form many semi-spiral oar shapes by many separation ribs and advances to starch runner, and the outermost end of runner is a grout outlet; Impeller shaft is connected for two kinds with the vertex of a cone.
For further realizing the object of the invention, described multi-disc blade is 4,6 or 8.
Described impeller shaft passes flat strong hole and is threaded with the vertex of a cone.
Impeller shaft passes flat strong hole and is connected by pin with the vertex of a cone.
Described impeller is connected by flat key with impeller shaft.
The described vertex of a cone is made by corrosion resistant PTEE engineering plastics.
Described feed space lower end and impeller shaft junction are provided with packing seal.
Compare with existing technology, the present invention has following advantage and beneficial effect:
(1) because a plurality of helical flow paths are arranged, it is more even that paper pulp is distributed, and more can not produce phenomenons such as channel, backflow, fluid separation;
(2) since blade become screw line, feed liquid throws away after entering distributor, can in be formed centrally vacuum, paper pulp can obtain pressure differential once more, thereby paper pulp obtains bigger kinetic energy and pressure energy, so paper pulp also has bigger power to upwelling except to evenly distributing all around;
(3) because paper pulp throws away from the tangential direction of impeller, and the upper surface of impeller is vertex of a cone structure, the resistance that whole rotor portion is subjected in rotary course is very little;
(4) because the lower surface of impeller is the half-spiral blade, can make paper pulp obtain good turbulence, increase the paper pulp poly-possibility of can not wadding a quilt with cotton;
(5) distributing homogeneity of the wheeled distributor of tower bottom leaf of upflow tower of the present invention is good, makes the better effects if of the bleaching action of upflow tower;
(6) impeller of the present invention and the vertex of a cone and other designs of part are simple, do not have special highly difficult processing technology.
Description of drawings
Fig. 1 is the impeller-type paper pulp structure of distributor schematic diagram at the bottom of the up-flow bleaching tower.
Fig. 2 is the vertical view of impeller among Fig. 1;
Fig. 3 is the upward view of impeller among Fig. 1.
The specific embodiment
Come below in conjunction with Figure of description that the invention will be further described, but the scope of protection of the presently claimed invention is not limited to the scope described in the embodiment.
Stock inlet is provided with impeller-type paper pulp distributor of the present invention at the bottom of the up-flow bleaching tower, its structure as shown in Figure 1, the impeller-type paper pulp distributor at the bottom of the up-flow bleaching tower comprises the vertex of a cone 1, impeller 2, charging aperture 4, packing seal 5, upper bearing (metal) 6, impeller shaft 7, lower bearing 8, shaft coupling 9, variable-frequency motor 10 and feed space 3; Impeller 2 and impeller shaft 7 are connected by flat key, and impeller shaft 7 is connected with variable-frequency motor 10 by shaft coupling 9.In the upper end of shaft coupling 9, be provided with upper bearing (metal) 6 and lower bearing 8 on the impeller shaft 7 from top to bottom successively.Upper bearing (metal) 6 and lower bearing 8 are fixed on the support.Stock inlet 4 is communicated with feed space 3, and feed space 3 is welded on the end socket at the bottom of the bleaching tower, and feed space 3 lower ends and impeller shaft 7 junctions are provided with packing seal 5, and the top of impeller shaft 7 is threaded, and the impeller 2 and the vertex of a cone 1 of feed space 3 upper ends linked together.Impeller 2 upper surface centers are the vertex of a cone 1.The vertex of a cone 1 is threaded the hole, can play the effect of a nut, is connected on the threaded impeller shaft 7 in top, can compress impeller 2 like this.In order to reinforce connection, except being threaded, also can adopt pin to strengthen connecting between the impeller shaft 7 and the vertex of a cone 1 simultaneously, the vertex of a cone 1 is rotated together with blade 22.For weight reduction, the material selection of the vertex of a cone 1 becomes corrosion resistant PTEE engineering plastics.
Shown in Fig. 2,3; Impeller 2 is one-body molded by multi-disc blade 22; Blade 22 slynesses, no corner angle are semi-spiral oar shape.Multi-disc blade 22 joins the composition smooth flat upper surface together, and the upper surface center connects the vertex of a cone 1; The summit of the vertex of a cone 1 is spherical in shape, and is whole excessively slick and sly.The impeller lower surface that multi-disc blade 22 forms advances to starch runner 23 by many semi-spiral oar shapes that many separation ribs are separated to form, and the outermost end of runner 23 is a grout outlet 25.Impeller shaft 7 passes flat strong hole 24 and is threaded with the vertex of a cone 1.Among the figure, the blade 22 of impeller 2 is 4, also can be 6 or 8.
Because the accumulation of slurry, drag torque is bigger, and running part not only bears the gravity of axial component, and bears the drag torque of radial component.Thereby the upper bearing (metal) 6 of rotating part selects the self-aligning roller bearing of band sleeve for use, main bearing radial force square, and lower bearing 8 is selected self-aligning thrust roller bearing for use, mainly bears axial moment, guarantees the normal operation of power transmission shaft.
The sealing of power transmission shaft: the asbestos cord that adopts oil-impregnated or be coated with graphite carries out packing seal, has also used fluid sealant, and metal (upper covers design simultaneously sealing ring, and bearing is not damaged.
During work, under the effect of variable-frequency motor 10, connect impeller shaft 7, give impeller shaft 7, pass to impeller 2 again the transmission of torque of variable-frequency motor 10 by shaft coupling 9.Paper pulp is under the effect of pump pressure, enter the stock inlet 4 at the bottom of the bleaching tower, enter feed space 3 then, what directly enter impeller 2 again advances to starch runner 23, paper pulp is owing to centrifugal motion is made in the impeller rotation, throw out from grout outlet 25 then, thisly advance to starch runner and can make flow even, occur so do not have any channel.Paper pulp changes into kinetic energy and pressure energy owing to the effect of impeller with mechanical energy, thereby has bigger power to make circumferential movement and move upward, and reaches to be evenly distributed, and bleaching action and conveying are effective, the phenomenon appearance that not having refluxes separates with fluid.The lower surface of impeller is made up of very smooth helical blade, and 23 pairs of paper pulp of the runner that constitutes between the helical blade have played guide effect, have improved pressure, have reduced the moment of resistance, have reduced energy loss.Because rotating speed is higher, so paper pulp can not deposit, is easy to throw out.Simultaneously because paper pulp enters the bottom of up-flow bleaching tower by pump, so paper pulp has had certain kinetic energy and pressure energy.When paper pulp enters the lower surface center of impeller-type paper pulp distributor, because impeller is in rotation, so paper pulp is and then impeller rotation also, and rotating ratio is higher, is enough to make paper pulp to make centrifugal motion, is gone out so got rid of, thereby in impeller, be formed centrally vacuum, paper pulp obtains good pressure reduction, obtains bigger kinetic energy and pressure energy, thereby distributes more all even continuous.
Upper surface at impeller 2 has the conical vertex of a cone 1, when impeller rotates, because the vertex of a cone 1 links together with impeller 2, so the paper oar is along with rotation, not only can form turbulent flow, and along with the direction of tangent line is splashed away, the power of this tangential direction adds the power of pump pressure, make its paper pulp can overcome drag losses, prevented the paper pulp alluvial effectively.The vertex of a cone is very smooth, without any corner angle, can crack the alluvial of paper pulp under the impeller rotation, has effectively reduced the moment of resistance, has impelled the distributing uniformity of paper pulp more, finally makes paper pulp obtain well evenly continuous bleaching reaction.The more important thing is that the turbulence of vertex of a cone rotation having increased paper pulp makes the pulp flow that splashes out at impeller 2 lower surface runners 23 more even, does not have channel and occurs; And, make paper pulp in bleaching tower, obtain better bleaching action because paper pulp obtains better circumferential herein and moves upward, avoided phenomenons such as paper pulp backflow, fluid separation.
In addition, for different paper pulp, in order to allow paper pulp make corresponding centrifugal motion, must adjust rotating speed, the present invention adopts variable-frequency motor to make things convenient for speed governing.So the distributing homogeneity of the impeller-type paper pulp distributor at the bottom of the up-flow bleaching tower of invention is better, make the better effects if of the bleaching action of upflow tower.The impeller and the vertex of a cone and other designs of part are simple, do not have special highly difficult processing technology.
Embodiment
A diameter is
Up-flow bleaching tower (output is by 200t/d), entering pulp density is 10-12%, the multitube that adopted equilateral triangle to arrange in the past advances the method for slurry, and 7 pipes are arranged, wherein the caliber of every pipe is
The appearance of yellow slurry is arranged behind the bleaching action frequently.7 pulp-inlet pipes that will be the equilateral triangle layout afterwards adopt blind plates to shut, and open a macropore in the bottom
Directly connect and go up pulp-inlet pipe, impeller-type paper pulp distributor at the bottom of stock inlet is set up up-flow bleaching tower of the present invention then, adjust its running parameter as follows: pulp density is similarly 10-12%, and the power of motor of up-flow bleaching tower base stock slurry distributor is 5.5KW, and the distributor impeller radius is
Wheel speed is 1-2 commentaries on classics each second, after testing, does not have yellow paper pulp to roll into a ball in the paper pulp and occurs, and whiteness has increased by 20%.
Claims (7)
1. the impeller-type paper pulp distributor at the bottom of the up-flow bleaching tower comprises feed space, upper bearing (metal), impeller shaft, lower bearing, shaft coupling and variable-frequency motor; Impeller shaft is connected with variable-frequency motor by shaft coupling, is provided with upper bearing (metal) and lower bearing on the impeller shaft of the upper end of shaft coupling from top to bottom successively; Feed space is fixed on the end socket at the bottom of the bleaching tower, is connected with impeller shaft; It is characterized in that: described impeller-type paper pulp distributor also comprises the impeller and the vertex of a cone, and described impeller is made up of the multi-disc blade, the blade slyness, and no corner angle are semi-spiral oar shape; The one-body molded composition smooth flat upper surface of multi-disc blade, the upper surface center connects the vertex of a cone; The impeller lower surface that the multi-disc blade forms is separated to form many semi-spiral oar shapes by many separation ribs and advances to starch runner, and the outermost end of runner is a grout outlet; Impeller shaft is connected with the vertex of a cone.
2. the impeller-type paper pulp distributor at the bottom of the up-flow bleaching tower according to claim 1 is characterized in that: described multi-disc blade is 4,6 or 8 blades.
3. the impeller-type paper pulp distributor at the bottom of the up-flow bleaching tower according to claim 1 is characterized in that: described impeller shaft passes the flat key hole and is threaded with the vertex of a cone.
4. the impeller-type paper pulp distributor at the bottom of the up-flow bleaching tower according to claim 1 is characterized in that: described impeller shaft passes the flat key hole and is connected by pin with the vertex of a cone.
5. the impeller-type paper pulp distributor at the bottom of the up-flow bleaching tower according to claim 1 is characterized in that: described impeller is connected by flat key with impeller shaft.
6. according to the impeller-type paper pulp distributor at the bottom of each described up-flow bleaching tower of claim 1-5, it is characterized in that: the described vertex of a cone is made by corrosion resistant PTEE engineering plastics.
7. according to the impeller-type paper pulp distributor at the bottom of each described up-flow bleaching tower of claim 1-5, it is characterized in that: described feed space lower end and impeller shaft junction are provided with packing seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100392562A CN101550661B (en) | 2009-05-06 | 2009-05-06 | Impeller-type paper pulp sparger at bottom of upward flow bleaching tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100392562A CN101550661B (en) | 2009-05-06 | 2009-05-06 | Impeller-type paper pulp sparger at bottom of upward flow bleaching tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101550661A CN101550661A (en) | 2009-10-07 |
| CN101550661B true CN101550661B (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100392562A Expired - Fee Related CN101550661B (en) | 2009-05-06 | 2009-05-06 | Impeller-type paper pulp sparger at bottom of upward flow bleaching tower |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760977B (en) * | 2009-12-29 | 2011-09-28 | 华南理工大学 | High-consistency paper pulp bleaching tower bottom discharger |
| CN105256635B (en) * | 2015-10-31 | 2017-06-16 | 重庆市南川区金鑫纸业有限公司 | For the bleaching equipment of paper pulp |
| CN112160181B (en) * | 2020-10-26 | 2023-06-30 | 轻工业杭州机电设计研究院有限公司 | Oxygen delignification reaction tower |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86202488U (en) * | 1986-04-22 | 1987-02-18 | 轻工业部杭州轻工机械设计研究所 | Apparatus for mixing middle concentration pulp with bleaching agent |
| EP0298693A2 (en) * | 1987-07-06 | 1989-01-11 | Kvaerner Pulping Technologies AB | Self feeding pump |
| CN1092833A (en) * | 1992-12-18 | 1994-09-28 | 英格索尔-兰德公司 | Be used for the blender that contacts between paper pulp and a kind of gaseous bleaching agent |
| CN1726072A (en) * | 2002-12-12 | 2006-01-25 | 美佐纸业股份有限公司 | Apparatus for mixing |
| CN101177920A (en) * | 2007-11-22 | 2008-05-14 | 李保民 | Vortex pulp distributor |
-
2009
- 2009-05-06 CN CN2009100392562A patent/CN101550661B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86202488U (en) * | 1986-04-22 | 1987-02-18 | 轻工业部杭州轻工机械设计研究所 | Apparatus for mixing middle concentration pulp with bleaching agent |
| EP0298693A2 (en) * | 1987-07-06 | 1989-01-11 | Kvaerner Pulping Technologies AB | Self feeding pump |
| CN1092833A (en) * | 1992-12-18 | 1994-09-28 | 英格索尔-兰德公司 | Be used for the blender that contacts between paper pulp and a kind of gaseous bleaching agent |
| CN1726072A (en) * | 2002-12-12 | 2006-01-25 | 美佐纸业股份有限公司 | Apparatus for mixing |
| CN101177920A (en) * | 2007-11-22 | 2008-05-14 | 李保民 | Vortex pulp distributor |
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| CN101550661A (en) | 2009-10-07 |
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Granted publication date: 20110615 Termination date: 20140506 |