CN101734600B - Method for conveying medium-concentration stuff and medium-concentration stuff pump system device for implementing same - Google Patents
Method for conveying medium-concentration stuff and medium-concentration stuff pump system device for implementing same Download PDFInfo
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- CN101734600B CN101734600B CN 200910193451 CN200910193451A CN101734600B CN 101734600 B CN101734600 B CN 101734600B CN 200910193451 CN200910193451 CN 200910193451 CN 200910193451 A CN200910193451 A CN 200910193451A CN 101734600 B CN101734600 B CN 101734600B
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Abstract
The invention provides a method for conveying medium-concentration stuff and a medium-concentration stuff pump system device for implementing the method. The method comprises the following steps that: mounting the medium-concentration stuff pump system device below a concentrator in a process flow of cleaning and bleaching medium-concentration paper stuff; and conveying the medium-concentration paper stuff into a bleaching tower device according to certain flow and pressure to perform bleaching by the medium-concentration stuff pump system device. The medium-concentration stuff pump system device comprises a medium-concentration standpipe, a turbulent flow generator, a centrifugal medium-concentration stuff pump, a three-phase separator, a vacuum pump and a connecting pipeline, wherein the turbulent flow generator is fixed at the bottom of the medium-concentration standpipe through an inlet flange; an output of the turbulent flow generator is connected with an inlet flange of the centrifugal medium-concentration stuff pump; a supporting base of the turbulent flow generator is connected with an air inlet pipe of the three-phase separator through a vacuum exhaust pipeline; and an exhaust pipe of the three-phase separator is connected with the vacuum pump. The method and the medium-concentration stuff pump system device can realize effective separation of a three-phase flow including stuff, air and water for the disassembly of a fiber network of the medium-concentration stuff and the fluidization of the medium-concentration stuff in favor of the continuous stable conveyance of the medium-concentration stuff pump.
Description
Technical field
The present invention relates to pulp and paper industry middle concentration paper pulp cleaning and bleaching technical field, particularly a kind of middle underflow material carrying method and middle underflow pump system and device thereof.
Background technology
Two major pollution sources of pulp and paper industry are the pollutions and the pollution of bleaching effluent of the black liquor that produces of boiling, and wherein the harmfulness of bleaching effluent pollution is polluted much larger than black digestion liquid, and toxicity is very big.The low dense chloride CEH bleaching of tradition needs to consume a large amount of chemical such as chlorine, alkali and hypochlorite, produces the poisonous waste water that contains AOX in a large number, and one ton of CEH bleached pulp of every according to statistics production can produce the poisonous waste water more than 100 cubes.Along with people's is to the attention of environmental protection; Improving and increasingly stringent of environmental regulation; Enterprises in pulp and paper industry has begun progressively to adopt in element-free chlorine (ECF) bleaching and totally chlorine free (TCF) bleaching dense cleaning and bleaching technological; Reduce the discharge capacity and the toxicity of waste water, reduce or eliminate the pollution of paper-making effluent, carry out cleaner production environment.
Middle underflow material conveying technology is realized the main process of dense cleaning and bleaching technology in ECF bleaching and the TCF bleaching; And in dense cleaning and bleaching technology and conventional bleaching compared with techniques; Have that environmental pollution is little, yield is high; The bleached pulp retention of whiteness is good, and the pharmaceutical chemicals consumption is few, produce series of advantages such as waste water is few and extensively adopted, and in the critical equipment of dense conveying technology be the middle underflow pump system and device.
Single Vane Medium Consistency Pump ZL95215788.8 of domestic production at present and turbulence type middle underflow pump CN88201317U transportation concentration all occur sending that slurry is unstable, fluctuation of pressure is big during greater than 10% middle underflow material, can't realize that ECF bleaching and TCF bleach in the conveying of underflow material in the dense cleaning and bleaching technical matters flow process; Utilize the positive displacement monopump carry in during the underflow material because paper pulp fiber is big with screw rod rubber bush coefficient of friction, the screw rod lining is easy to damage and makes to carry and fail; Domestic introduction and external online in dense cleaning and bleaching pulping production line generally adopt middle underflow pump system of middle underflow pump system or the peace moral Ritz company of Suhl longevity company's band horizontal turbulence device with vertical quality-adjusting device; It is that its vacuum pump extract system directly is connected with pump or quality-adjusting device through pipeline, valve that there is a common shortcoming in these two kinds of middle underflow pump systems; Slurry, water, vapour three-phase stream directly pass through vacuum pump; Vacuum pump impeller is very fragile and degree of vacuum is descended or lost efficacy, in the influence stable feed of underflow material with in the safe operation of dense cleaning and bleaching pulping production line.Therefore, invent the method and apparatus of underflow material in a kind of ability stable feed, the safe operation of dense cleaning and bleaching pulping production line is extremely important in the assurance.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, underflow material in the conveying of a kind of ability continous-stable is provided, dense cleaning and bleaching pulping production line method for safe operation in the assurance.
Another object of the present invention is to provide a kind of middle underflow pump system and device of realizing said method.
The object of the invention is realized through following technical proposals: underflow material carrying method produces shearing stress through the rotor rotation of the turbulent flow generator of dense riser bottom in being installed in this; The middle underflow material network of fibers of dense standpipe in the entering is disintegrated and fluidization; And make the air that is clipped in the middle underflow material be collected at the turbulent flow generator centre of rotor; Got rid of by being drawn into triphase separator of vacuum pump, removed the outlet under centrifugal middle underflow pump impeller centrifugal action of air and fluidised middle underflow material and sent into the bleaching tower realization according to the flow and the pressure of technique initialization from centrifugal middle underflow pump.
In the above-mentioned middle underflow material carrying method, the rotating speed of the turbulent flow generator rotor of dense riser bottom is higher than 1800rpm in said being installed in.
Realize the middle underflow pump system and device of said method; Dense standpipe, turbulent flow generator, centrifugal middle underflow pump, triphase separator and vacuum pump in comprising; The bottom of dense standpipe during turbulent flow generator is fixed on through suction flange; The outlet of turbulent flow generator is connected with the suction flange of centrifugal middle underflow pump, and the bearing of turbulent flow generator is connected with the triphase separator air inlet pipe through the vacuum exhaust pipeline, and the triphase separator freeing pipe is connected with vacuum pump.
In the above-mentioned middle underflow pump system and device, said in the main body of dense standpipe be cylindrical, and the bottom of dense standpipe is converted into miter angle along the line of centers of said cylinder in said.
In the above-mentioned middle underflow pump system and device; Dense standpipe is made up of base portion and base section in said; Base portion is cylindrical; Base section serve as reasons the direction that becomes miter angle along the center-point of said cylinder bottom surface and with the cylinder bottom surface with a plane to cylinder excise the back remaining, with the cylindrical part that links together, the bottom notch of cylinder is surrounded by the part of circular cone after the excision, the vertex of a cone of circular cone is positioned at said central spot; The circular cone bottom surface is parallel with the cylinder bottom surface, and the diameter of circular cone bottom surface is consistent with the diameter of cylinder bottom surface.
In the above-mentioned middle underflow pump system and device, the diameter of said cylinder is less than 900mm, and height is greater than 3000mm.
In the above-mentioned middle underflow pump system and device, said turbulent flow generator comprises rotor, housing, sealing, axle, pulley drive assembly, bearing and vacuum exhaust adapter, and the rotor of turbulent flow generator is three-jaw or four paws shape rotor, and is welded with spiral vane on the pawl.
In the above-mentioned middle underflow pump system and device, the axle of said turbulent flow generator is a hollow shaft, and axle is connected through bearing with bearing, is connected with Vacuum exhaust tube on the bearing.
In the above-mentioned middle underflow pump system and device, said centrifugal middle underflow pump is the centrifugal stock pump of half-opened impeller, and the adjustment lining that cooperates with said half-opened impeller is installed on the pump case of centrifugal stock pump.
In the above-mentioned middle underflow pump system and device, said triphase separator is the fully enclosed container, is welded by two cylindrical tubes of size, all is welded with connection pipe on two cylindrical shells of size, and the outer wall of connection pipe and cylinder body outer wall are tangent on how much.
In described in of the present invention dense standpipe be diameter less than 900mm, the cylinder height is greater than 3000mm, the bottom of standpipe along in the line of centers of dense standpipe be converted into miter angle, with underflow charge bridge in preventing; The rotor of said turbulent flow generator is three-jaw or four paws shape rotor, is welded with spiral vane on the pawl, so that produce strong shearing stress during high speed revolution; Said centrifugal middle underflow pump is designed to the centrifugal stock pump of half-opened impeller, and cooperating of adjustment lining and half-opened impeller arranged on the pump case of centrifugal stock pump, works as damage in impeller, in time adjusts the gap of lining and impeller when the Volumetric efficiency of pump descends.The connecting line of said turbulent flow generator and triphase separator main cylinder are tangent, help the gas, liquid, solid three phase separation.
The present invention has following advantage and effect with respect to prior art:
Middle concentration paper pulp in the inventive method is under the strong shear action of the rotor high-speed rotation generation of turbulent flow generator; Network of fibers disintegrates, and the fluidization of middle underflow material is because centrifugal action; Form low pressure at rotor center; Air in the paper pulp separates with fiber and assembles and form air mass to the rotor center meiobar, under the effect of vacuum pump extract system, in time sends into triphase separator and separates gathering in the air of rotor center and low amounts of water, fiber; Removed air and fluidised in the underflow material under centrifugal middle underflow pump impeller centrifugal action, be conveyed into the medium consistency bleaching tower by the flow of technological requirement and pressure continous-stable.Generally speaking; Adopt underflow material carrying method in this and middle underflow pump system and device thereof can make in disintegration and the fluidization of middle underflow material of underflow material network of fibers; Realize effective separation of slurry, gas, water three-phase stream; The continous-stable that is beneficial to centrifugal middle underflow pump is carried dense cleaning and bleaching pulping production line safe operation in the assurance.
Description of drawings
Fig. 1 is the structural front view of middle underflow pump system and device of the present invention.
Fig. 2 is the structure birds-eye view of middle underflow pump system and device of the present invention.
Fig. 3 is a middle underflow pump system and device turbulent flow generator structural representation of the present invention.
Fig. 4 is the centrifugal middle underflow pump structural representation of middle underflow pump system and device of the present invention.
Fig. 5 is the triphase separator structural front view of middle underflow pump system and device of the present invention.
Fig. 6 is the triphase separator structure birds-eye view of middle underflow pump system and device of the present invention.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing practical implementation of the present invention is done further to specifically describe.
Embodiment
Fig. 1 shows the specific embodiment of the present invention, by Fig. 1, shown in Figure 2, and dense standpipe 1, turbulent flow generator 2, centrifugal middle underflow pump 3, triphase separator 4, vacuum pump 5 and system's connecting line 6 during middle underflow pump system and device of the present invention comprises.
In dense standpipe 1 be that diameter is less than 900mm; The cylinder height is greater than 3000mm, and in said dense standpipe the bottom along in the line of centers of dense standpipe be converted into miter angle, in the bottom of dense standpipe be connected in underflow material exhaust tube; In the dilution water pipe is installed on the dense standpipe; And be provided with upper and lower dilution water valve FV1 and FV2, middle underflow material by in the top of dense standpipe 1 get into, discharge the bottom; As shown in Figure 3; Turbulent flow generator 2 comprises rotor 301, housing 302, sealing 303, bearing body 304, axle 305, pulley drive assembly 306, bearing 307 and vacuum exhaust adapter 308, motor 309; The rotor 301 of turbulent flow generator 2 is fixed on the axle 305; Be installed in the housing 302 with bearing body 304 through sealing 303, drive rotors 301 rotations through pulley drive assembly 306; As shown in Figure 4; Centrifugal middle underflow pump 3 comprises that the pump housing 401, adjustment covers 402, half-opened impeller 403, pump postoperculum 404, seal 405, bearing body 406, pump shaft 407, coupler 408, motor 409, base 410; Adjustment is covered 402 and is bolted on the pump housing 401 by adjusting; Half-opened impeller 403 is fixed on the pump shaft 407; Pump shaft 407 passes pump postoperculum 404, sealing 405, the bearing body 406 that is fixed on the pump housing 401, connects with motor 409 through coupler 408, and the pump housing 401 is installed on the base 410 with motor 409; Like Fig. 5, shown in Figure 6; Triphase separator comprises little cylindrical shell 501, large cylinder 502, air inlet pipe 503, freeing pipe 504 and blow-off pipe 505; Air inlet pipe 503 tube walls and large cylinder 502 barrels are tangent on how much, and freeing pipe 504 tube walls and little cylindrical shell 501 barrels are tangent on how much.
The bottom of dense standpipe 1 during the turbulent flow generator 2 of middle underflow pump system and device of the present invention is fixed on through suction flange; The outlet of turbulent flow generator 2 is connected with the suction flange of centrifugal middle underflow pump 3; The bearing of turbulent flow generator 2 is connected with the air inlet pipe 503 of triphase separator 4 through vacuum exhaust pipeline 6, and the freeing pipe 504 of triphase separator 4 is connected with vacuum pump 5.
The middle underflow material of dense standpipe 1 drives fluidization under the rotor 301 high speed revolution effects at the motor 309 of turbulent flow generator 2 through pulley drive assembly 306 in the entering; And make the air that is clipped in the middle underflow material be collected at the center of turbulent flow generator 2 rotors 301; Got rid of by being drawn into triphase separator 4 of vacuum pump 5, removed air and fluidised in the underflow material under centrifugal middle underflow pump 3 half-opened impellers 403 centrifugal actions, send into bleaching tower according to the flow and the pressure continous-stable of technique initialization from the outlet of centrifugal middle underflow pump 3.
Claims (10)
1. underflow material carrying method in a kind; It is characterized in that: in middle underflow material course of conveying; The rotor of the turbulent flow generator of dense riser bottom rotation in being installed in; Make the middle underflow material fluidization of dense standpipe in the entering; And make be clipped in air in the underflow material be collected at the turbulent flow generator centre of rotor, air is drawn into triphase separator by vacuum pump and gets rid of, removed air and fluidised in the outlet from centrifugal middle underflow pump under centrifugal middle underflow pump impeller centrifugal action of underflow material send into bleaching tower according to the flow and the pressure of technique initialization.
2. underflow material carrying method in according to claim 1, it is characterized in that: the rotating speed of the turbulent flow generator rotor of dense riser bottom is higher than 1800rpm in said being installed in.
3. realize the middle underflow pump system and device of the said method of claim 1; Dense standpipe, turbulent flow generator, centrifugal middle underflow pump, triphase separator and vacuum pump in comprising; It is characterized in that: the bottom of dense standpipe during turbulent flow generator is fixed on through suction flange; The outlet of turbulent flow generator is connected with the suction flange of centrifugal middle underflow pump, and the bearing of turbulent flow generator is connected with the triphase separator air inlet pipe through the vacuum exhaust pipeline, and the triphase separator freeing pipe is connected with vacuum pump.
4. middle underflow pump system and device according to claim 3, it is characterized in that said in the main body of dense standpipe be cylindrical, and the bottom of dense standpipe is converted into miter angle along the line of centers of said cylinder in said.
5. middle underflow pump system and device according to claim 3; It is characterized in that said in dense standpipe constitute by base portion and base section; Base portion is cylindrical; Base section serve as reasons the direction that becomes miter angle along the center-point of said cylinder bottom surface and with the cylinder bottom surface with a plane to cylinder excise the back remaining, with the cylindrical part that links together, the bottom notch of cylinder is surrounded by the part of circular cone after the excision, the vertex of a cone of circular cone is positioned at said central spot; The circular cone bottom surface is parallel with the cylinder bottom surface, and the diameter of circular cone bottom surface is consistent with the diameter of cylinder bottom surface.
6. middle underflow pump system and device according to claim 4, the diameter that it is characterized in that said cylinder are less than 900mm, and height is greater than 3000mm.
7. middle underflow pump system and device according to claim 3; It is characterized in that said turbulent flow generator comprises rotor, housing, sealing, axle, pulley drive assembly, bearing and vacuum exhaust adapter; The rotor of turbulent flow generator is three-jaw or four paws shape rotor, and is welded with spiral vane on the pawl.
8. middle underflow pump system and device according to claim 7 is characterized in that the axle of said turbulent flow generator is hollow shaft, and axle is connected through bearing with bearing, is connected with Vacuum exhaust tube on the bearing.
9. middle underflow pump system and device according to claim 3 is characterized in that said centrifugal middle underflow pump is the centrifugal stock pump of half-opened impeller, is equipped with the adjustment lining that cooperates with said half-opened impeller on the pump case of centrifugal stock pump.
10. according to each described middle underflow pump system and device of claim 3～9; It is characterized in that said triphase separator is the fully enclosed container; Be welded by two cylindrical tubes of size, all be welded with connection pipe on two cylindrical shells of size, the outer wall of connection pipe and cylinder body outer wall are tangent on how much.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910193451 CN101734600B (en) | 2009-10-30 | 2009-10-30 | Method for conveying medium-concentration stuff and medium-concentration stuff pump system device for implementing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910193451 CN101734600B (en) | 2009-10-30 | 2009-10-30 | Method for conveying medium-concentration stuff and medium-concentration stuff pump system device for implementing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101734600A CN101734600A (en) | 2010-06-16 |
| CN101734600B true CN101734600B (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910193451 Expired - Fee Related CN101734600B (en) | 2009-10-30 | 2009-10-30 | Method for conveying medium-concentration stuff and medium-concentration stuff pump system device for implementing same |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444046A (en) * | 2011-09-29 | 2012-05-09 | 华南理工大学 | Pulp feeding device for medium consistency beating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88201317U (en) * | 1988-02-12 | 1988-11-30 | 中国轻工业机械总公司天津轻工业机械厂 | Turbulent type middle underflow pump |
| CN2506681Y (en) * | 2001-09-03 | 2002-08-21 | 华南理工大学 | Middle concentration slurry torrent generator |
| CN201539415U (en) * | 2009-10-30 | 2010-08-04 | 华南理工大学 | Medium-consistency slurry pump system device |
-
2009
- 2009-10-30 CN CN 200910193451 patent/CN101734600B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88201317U (en) * | 1988-02-12 | 1988-11-30 | 中国轻工业机械总公司天津轻工业机械厂 | Turbulent type middle underflow pump |
| CN2506681Y (en) * | 2001-09-03 | 2002-08-21 | 华南理工大学 | Middle concentration slurry torrent generator |
| CN201539415U (en) * | 2009-10-30 | 2010-08-04 | 华南理工大学 | Medium-consistency slurry pump system device |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平7-280632A 1995.10.27 |
| 张鹏云等.浆体输送泵.《国外石油机械》.1996,第7卷(第3期),第52-55页. * |
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| CN101734600A (en) | 2010-06-16 |
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Granted publication date: 20121226 Termination date: 20181030 |