CN101007226A - Pressure filtration technology and band type filter press for realizing said process - Google Patents
Pressure filtration technology and band type filter press for realizing said process Download PDFInfo
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- CN101007226A CN101007226A CN 200610041747 CN200610041747A CN101007226A CN 101007226 A CN101007226 A CN 101007226A CN 200610041747 CN200610041747 CN 200610041747 CN 200610041747 A CN200610041747 A CN 200610041747A CN 101007226 A CN101007226 A CN 101007226A
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Abstract
A filter-pressing dewatering process and the belt filter press, it sprays the slurry on the mesh belt, it dewaters by gravity and adsorption, then it twines the filter mesh belts on two filter-pressing dewatering rollers consecutively to make the filter mesh belts be wave, then it filter-pressing dewaters under the function of twist movement force. Power drives the active directing rollers; the completed slurry is delivered between the active and the driven directing rollers. The invention resolves the technical problems of complex equipment structure, high costs and poor dehydration results in background technology. The invention uses single row roller drive, energy consumption is low, dehydration is uniform, effect is good and quality slurry is high.
Description
Technical field
The present invention relates to a kind of pressure filtering process and equipment thereof that is used for the material Separation of Solid and Liquid, be specifically related to a kind of filter-press dehydration technique and realize the belt filter press of this technology.
Background technology
Filter press is widely used in the industries such as coal, chemical industry, metallurgy, building materials, food, papermaking, pharmacy, mine, weaving, printing and dyeing, pottery, petrochemical industry and urban water supply and sewerage.
In paper industry, belt filter press is the capital equipment in the process procedures such as dehydration accumulating of washing, paper making pulp of high dense extraction, the slurrying workshop section of black digestion liquid, mainly the two rows roller system that is not waited by diameter constitutes, and forms the extruding mating surface between last lower roll.Slurry is held between the two-layer screen belt 3, the extruding mating surface place of screen belt 3 between up-down rollers.Source of the gas is exerted pressure to roller system, and the screen belt 3 between last lower roll is extruded, and Free water and capillary water in the slurry are squeezed out, and this is a press dewatering.The dewatering of slurry attaches gravity dehydration and adsorption dewatering based on press dewatering.
There are following shortcoming in existing filter-press dehydration technique and equipment thereof:
1. complex structure, volume is big, the cost height.Dehydration cooperates realization by two rows roller system, and roller quantity is many, needs two cover Power Drive Units, complex structure, equipment cost height.
2. energy consumption height.Roller quantity is many, and required driving force is big, the energy consumption height.Existing equipment required drive source 〉=37KW.
3. costs and poor dehydration results.Dehydration only depends on the extruding mating surface extrusion dehydration between up-down rollers, and squish area is little, makes dehydrating effect relatively poor.
4. roller is plain roller, and the water of extruding between the extruding mating surface is difficult for deriving, and also makes dehydrating effect relatively poor.
5. in the process of the dehydration of slurry, the moisture content that the middle part extrudes spreads to both sides, makes the slurry on guipure both sides fully to dewater, and therefore, it is inhomogeneous to dewater, and causes costs and poor dehydration results.
6. the slurry of guipure both sides can't fully dewater, and humidity is bigger, and therefore, slurry is easily run in the screen belt both sides.
7. dewatering efficiency is low.The up-down rollers extrusion dehydration, the applying that requires the extruding mating surface is apart from unanimity.When the external diameter of roller and surface because of feasible applyings distance such as crudy, wearing and tearing when inconsistent, the extruding mating surface just only is that part is effective, costs and poor dehydration results, dewatering efficiency is low naturally.
8. existing technology is 2～5% o'clock advancing to starch concentration, and the pulp mass dryness fraction is 25～30%.
9. the machining accuracy of roll body and material wear-resistant are decreased the requirement of property, make equipment cost increase.
10. for improving dewatering efficiency, must increase the contact area of roll body and guipure, increase the dehydration stroke, promptly increase the diameter and the quantity of two groups of rollers.This not only makes the bulky of equipment, cost up, and, drive required energy consumption and also increase.
Summary of the invention
The object of the present invention is to provide a kind of filter-press dehydration technique and realize the belt filter press of this technology, it has solved device structure complexity in the background technology, cost height, the technical problem of costs and poor dehydration results.
Technical solution of the present invention is:
A kind of filter-press dehydration technique, its special character is: the performing step of this technology comprises
1) whitewashing material: pasty slurry is sprayed onto down on the guipure 1.
2) gravity dehydration: in service at the power tractive, will play guipure 1 to be directed on the horizontally disposed gravity dehydration roller 2, carry out gravity dehydration.Gravity dehydration roller 2 generally adopts two at least, also can adopt three or more.
3) form screen belt 3: guipure 4 on pulp surface covers, slurry is held between the upper and lower guipure 1, forms slurries filtration guipure 3.
4) adsorption dewatering: screen belt 3 operations are carried out the vacuum suction dehydration by vacuum tank 5.Vacuum tank 5 also can adopt one or more to adopt two to be advisable.
5) filter-press dehydration:
(1) twines screen belt 3: with screen belt about in the of 3, be wound on the filter-press dehydration roller 6 successively, make screen belt 3 be wavy.Filter-press dehydration roller 6 is to adopt two to be advisable.
(2) filter-press dehydration: screen belt 3 is wavy operation by filter-press dehydration roller 6, carries out filter-press dehydration under the effect of twining movement pulling force.
6) discharging: power drive is deflector roll 9 initiatively, and screen belt 3 is passed through by 10 of driving and driven deflector rolls, and upper and lower guipure 1 is derived by driving and driven deflector roll 10 respectively and returned, and the finished product slurry is by 10 derivation of driving and driven deflector roll.
Above-mentioned winding screen belt 3 can be earlier screen belt 3 to be imported in the counterclockwise direction, is wound on the first filter-press dehydration roller 61 from the below, on the top imports, is wound in following closely the second filter-press dehydration roller 62 along clockwise direction, make screen belt 3 be wavy again.
Above-mentioned winding screen belt 3 can be wound in screen belt 3 after the second filter-press dehydration roller 62 on one, two or more filter-press dehydration rollers 6 successively again, makes screen belt 3 be continuous wavy.
Above-mentioned winding screen belt 3 also can be earlier screen belt 3 to be imported along clockwise direction, is wound on the first filter-press dehydration roller 61 from the top, on the below imports, is wound in following closely the second filter-press dehydration roller 62 in the counterclockwise direction, make screen belt 3 be wavy again.
Above-mentioned winding screen belt 3 also can be wound in screen belt 3 after the second filter-press dehydration roller 62 on one, two or more filter-press dehydration rollers successively again, makes screen belt 3 be continuous wavy.
The water that above-mentioned filter-press dehydration can go out press filtration is guided out by the drainage trap 8 on filter-press dehydration roller 6 surfaces.
The cornerite that above-mentioned screen belt 3 is wound on first, second filter- press dehydration roller 61,62 is advisable with the 90-135 degree.
The cornerite that above-mentioned screen belt 3 is wound on first, second filter- press dehydration roller 61,62 is the best with 120 degree.
The above-mentioned radius of curvature that is wound in screen belt 3 on the first filter-press dehydration roller 61 is being good less than the radius of curvature that is wound in screen belt 3 on the second filter-press dehydration roller 62.That is be good less than the diameter of the second filter-press dehydration roller 62, with the diameter of the first filter-press dehydration roller 61.
Above-mentioned screen belt 3 by 10 of driving and driven deflector rolls by the time, available source of the gas is given driven deflector roll 10 pressurizations, when screen belt 3 is passed through by 10 of driving and driven deflector rolls, press dewatering once more.
A kind of belt filter press of realizing above-mentioned technology comprises gravity dehydration mechanism, adsorption dewatering mechanism and export agency; Described gravity dehydration mechanism comprises the gravity dehydration roller 2 that is horizontally placed on the frame 7, can rotates around roll shaft; Described adsorption dewatering mechanism comprises the vacuum tank 5 that is arranged on the frame 7; Described export agency comprises initiatively deflector roll 9 and driven deflector roll 10; Its special character is: be provided with filter-press dehydration mechanism between described adsorption dewatering mechanism and the export agency; Described filter-press dehydration mechanism comprises first, second filter- press dehydration roller 61,62 that is horizontally placed on the frame 7, can rotates around the axle center; Before the described first filter-press dehydration roller 61 is arranged on, after the described second filter-press dehydration roller 62 is arranged on.
The diameter of the above-mentioned second filter-press dehydration roller 62 is good with the diameter greater than the first filter-press dehydration roller 61, and described first, second filter- press dehydration roller 61,62 surfaces are to be provided with drainage trap 8 for good
The present invention has the following advantages:
1. simple in structure, volume is little, and cost is low, and energy consumption is low.Roller of the present invention is single roller, and is not only simple in structure, volume is little, and required driving force is also less, and energy consumption is low, has reduced power set, and therefore, equipment and production cost are all lower.
2. adopt single roller transmission, resistance is little, and energy consumption is low.Power source of the present invention only is 18KW, electric current＜30A.
3. screen belt is wound on the roller, and by the dehydration of winding power, the dehydration area is big, is one of good reason of dehydrating effect.
4. filter-press dehydration roller surface is provided with drainage trap, the water of extruding in time can be derived, and also is one of good reason of dehydrating effect.
5. the drainage trap that is provided with of filter-press dehydration roller surface, it is big to have increased frictional force, makes that power speed is synchronous, reliable transmission.
6. dehydration evenly.Screen belt is wound on the filter-press dehydration roller, relies on the dehydration of twining movement pulling force, and the screen belt each several part pressure that is wound on the roller is even, and therefore dehydration is even, and dehydrating effect is good, and can not run slurry.
7. equipment cost is lower.By the dehydration of twining movement pulling force, the mismachining tolerance of roller, wearing and tearing etc. do not have influence to dehydrating effect.Therefore, require lowly, make equipment cost lower what the machining accuracy of roll body and material wear-resistant decreased property.
8. stock quality height.Dehydrating effect is good, and the impurity of black digestion liquid leaches totally, has improved end product quality.The present invention is 2～5% o'clock advancing to starch concentration, and the pulp mass dryness fraction is 45～50%.
9. stock quality height enters the content height of mud in the cesspool, and the epoxy index of sewage rises in the cesspool, makes waste water control easier.
10. noise pollution is little.Equipment operation vibrations are little, and noise is extremely low, pollute little, good work environment.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Drawing reference numeral explanation: guipure under the 1-, 2-gravity dehydration roller, 3-screen belt, the last guipure of 4-, 5-vacuum tank, 6-filter-press dehydration roller, 61-filter-press dehydration roller, 62-filter-press dehydration roller, 7-frame, the 8-drainage trap, 9-is deflector roll initiatively, the driven deflector roll of 10-, 11-pressue device.
The specific embodiment
Referring to Fig. 1, the step of filter-press dehydration technique of the present invention is as follows:
1) whitewashing material: pasty slurry is sprayed onto down on the guipure 1 by the blowing case.
2) gravity dehydration: in service at the power tractive, will play guipure 1 to be directed on the horizontally disposed gravity dehydration roller 2, rely on gravity to carry out freely dewatering when moving by gravity dehydration roller 2, can deviate from part water.Gravity dehydration roller 2 is horizontally disposed one, two or more rollers.
3) form screen belt 3: guipure 4 on pulp surface covers, slurry is held between the upper and lower guipure 1, constitute slurries filtration guipure 3.
4) adsorption dewatering: make screen belt 3 operations by vacuum tank 5, carry out the vacuum suction dehydration, can deviate from part water.Vacuum tank 5 is advisable with two, also can adopt one or more.
5) filter-press dehydration:
(1) twines screen belt 3: with screen belt about in the of 3, be wound on two, three or more filter-press dehydration roller 6 successively, make screen belt 3 be wavy.Filter-press dehydration roller 6 is advisable with two, also can adopt three or more.
To twine the method one of screen belt 3: earlier screen belt 3 is imported, is wound on the first filter-press dehydration roller 61 in the counterclockwise direction from the below, on the top imports, is wound in following closely the second filter-press dehydration roller 62 along clockwise direction, make screen belt 3 be wavy again.Import according to this, winding order, successively screen belt 3 is wound in after one, two or more filter-press dehydration rollers 6 on, make screen belt 3 be continuous wavy.
The method two of screen belt 3 will be twined: earlier screen belt 3 is imported along clockwise direction, is wound on the first filter-press dehydration roller 61 from the top, on the below imports, is wound in following closely the second filter-press dehydration roller 62 in the counterclockwise direction, make screen belt 3 be wavy again.Import according to this, winding order, successively screen belt 3 is wound in after one, two or more filter-press dehydration rollers 6 on, make screen belt 3 be continuous wavy.
The cornerite that screen belt 3 is wound on first, second filter- press dehydration roller 61,62 can be the 80-180 degree, is advisable with the 90-135 degree, and be good with 120 degree.
With screen belt about in the of 3, be wound on two, three or more filter-press dehydration roller 6 successively, wherein, be good less than the diameter of the second filter-press dehydration roller 62 with the diameter of the first filter-press dehydration roller 61.
(2) filter-press dehydration: screen belt 3 is wavy operation by filter-press dehydration roller 6, carries out filter-press dehydration under the effect of twining movement pulling force, can leach most of water.Screen belt 3 whenever by a filter-press dehydration roller 6, is promptly finished the one-level filter-press dehydration.Two, three or more filter-press dehydration roller 6 can finish secondary, three grades or multistage filter-press dehydration.
(3) guiding water: adopt the surface to be provided with the filter-press dehydration roller 6 of drainage trap 8, the water that press filtration goes out is guided out by the drainage trap 8 on filter-press dehydration roller 6 surfaces.
6) discharging: power drive is deflector roll 9 initiatively, and screen belt 3 is passed through by 10 of driving and driven deflector rolls, and upper and lower guipure 1 is derived by driving and driven deflector roll 10 respectively and returned, and the finished product slurry is by 10 derivation of driving and driven deflector roll.Screen belt 3 by 10 of driving and driven deflector rolls by the time, give driven deflector roll 10 pressurizations with the source of the gas of pressue device 11, screen belt 3 also can be deviate from low amounts of water by squeezing by 10 derivation of driving and driven deflector roll the time.
Referring to Fig. 1, realize that the belt filter press structure of technology of the present invention is as follows:
Belt filter press of the present invention mainly is made of gravity dehydration mechanism, adsorption dewatering mechanism, filter-press dehydration mechanism and export agency.
Gravity dehydration mechanism is made of two, three or more gravity dehydration roller 2, and it is horizontally placed on the frame 7, can rotate around the axle center.
Adsorption dewatering mechanism is made of one, two or more vacuum tanks 5, is advisable with two, is fixed on the frame 7.
Filter-press dehydration mechanism is made of the second filter-press dehydration roller 62 after the first filter-press dehydration roller 61 the preceding being set and being arranged on, and it is horizontally placed on the frame 7, can rotates around the axle center.The diameter of first, second filter-press dehydration roller can be identical, but the first filter-press dehydration roller, 61 diameters are good greater than being provided with the preceding with the second filter-press dehydration roller, 62 diameters after being arranged on.First, second filter- press dehydration roller 61,62 surfaces are provided with the timely drainage trap 8 of deriving of the water that press filtration can be gone out.After first, second filter- press dehydration roller 61,62, one, two or more filter-press dehydration rollers 6 can be set also.
Export agency is made of active deflector roll 9 and driven deflector roll 10.Driven deflector roll 10 is connected with the pressue device 11 that has the press dewatering function concurrently.Pressue device 11 generally can adopt rubber air spring.
Claims (12)
1. filter-press dehydration technique, it is characterized in that: the performing step of this technology comprises
1) whitewashing material: pasty slurry is sprayed onto down on the guipure (1);
2) gravity dehydration: in service at the power tractive, will play guipure (1) to be directed on the horizontally disposed gravity dehydration roller (2), carry out gravity dehydration;
3) form screen belt 3: guipure (4) on pulp surface covers, slurry is held between the upper and lower guipure (1), forms slurries filtration guipure (3);
4) adsorption dewatering: screen belt (3) operation is carried out the vacuum suction dehydration by vacuum tank (5);
5) filter-press dehydration:
(1) twines screen belt (3): screen belt (3) is wound on first, second filter-press dehydration roller (61,62) up and down, successively, makes screen belt (3) be wavy;
(2) filter-press dehydration: screen belt (3) is wavy operation by filter-press dehydration roller (6), carries out filter-press dehydration under the effect of twining movement pulling force;
6) discharging: power drive is deflector roll (9) initiatively, and screen belt (3) is by passing through between driving and driven deflector roll (10), and upper and lower guipure (1) is derived by driving and driven deflector roll (10) respectively and returned, and the finished product slurry is by deriving between driving and driven deflector roll (10).
2. filter-press dehydration technique according to claim 1, it is characterized in that: described winding screen belt (3) is earlier screen belt (3) to be imported in the counterclockwise direction, is wound on the first filter-press dehydration roller (61) from the below, on the top imports, is wound in following closely the second filter-press dehydration roller (62) along clockwise direction, make screen belt (3) be wavy again.
3. filter-press dehydration technique according to claim 2, it is characterized in that: described winding screen belt (3) is on the second filter-press dehydration roller (62) is wound in screen belt (3) one, two or more filter-press dehydration rollers 6 afterwards successively again, makes screen belt (3) be continuous wavy.
4. filter-press dehydration technique according to claim 1, it is characterized in that: described winding screen belt (3) is earlier screen belt (3) to be imported along clockwise direction, is wound on the first filter-press dehydration roller (61) from the top, on the below imports, is wound in following closely the second filter-press dehydration roller (62) in the counterclockwise direction, make screen belt (3) be wavy again.
5. filter-press dehydration technique according to claim 4, it is characterized in that: described winding screen belt (3) is on the second filter-press dehydration roller (62) is wound in screen belt (3) one, two or more filter-press dehydration rollers afterwards successively again, makes screen belt (3) be continuous wavy.
6. according to claim 1 or 2 or 4 described filter-press dehydration techniques, it is characterized in that: described filter-press dehydration comprises that water that press filtration is gone out guides out by the drainage trap (8) on filter-press dehydration roller (6) surface.
7. filter-press dehydration technique according to claim 6 is characterized in that: the cornerite that described screen belt (3) is wound on first, second filter-press dehydration roller (61,62) is the 90-135 degree.
8. filter-press dehydration technique according to claim 7 is characterized in that: the cornerite that described screen belt (3) is wound on first, second filter-press dehydration roller (61,62) is 120 degree.
9. filter-press dehydration technique according to claim 8 is characterized in that: the described first filter-press dehydration roller (61) that is wound in is gone up the radius of curvature of screen belt (3) less than the radius of curvature that is wound in screen belt (3) on the second filter-press dehydration roller 62.
10. filter-press dehydration technique according to claim 9, it is characterized in that: described screen belt (3) is when passing through between driving and driven deflector roll (10), give driven deflector roll (10) pressurization with source of the gas, screen belt (3) when passing through between driving and driven deflector roll (10), press dewatering.
11. a belt filter press of realizing claim 1 technology comprises gravity dehydration mechanism, adsorption dewatering mechanism and export agency; Described gravity dehydration mechanism comprises and is horizontally placed on the gravity dehydration roller (2) that frame (7) goes up, can rotate around the axle center; Described adsorption dewatering mechanism comprises the vacuum tank (5) that is arranged on the frame (7); Described export agency comprises initiatively deflector roll (9) and driven deflector roll (10); It is characterized in that: be provided with filter-press dehydration mechanism between described adsorption dewatering mechanism and the export agency; Described filter-press dehydration mechanism comprises and is horizontally placed on first, second filter-press dehydration roller (61,62) that frame (7) goes up, can rotate around roll shaft; Before the described first filter-press dehydration roller (61) is arranged on, after the described second filter-press dehydration roller (62) is arranged on.
12. belt filter press according to claim 9 is characterized in that: the diameter of the described second filter-press dehydration roller is greater than the diameter of the first filter-press dehydration roller (61), and described first, second filter-press dehydration roller (61,62) face is provided with drainage trap (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610041747 CN101007226A (en) | 2006-01-27 | 2006-01-27 | Pressure filtration technology and band type filter press for realizing said process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610041747 CN101007226A (en) | 2006-01-27 | 2006-01-27 | Pressure filtration technology and band type filter press for realizing said process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101884857A (en) * | 2010-07-16 | 2010-11-17 | 广西力源新资源开发有限公司 | Vacuum belt press filter |
| CN101423557B (en) * | 2008-03-06 | 2010-12-01 | 四川省农业机械研究设计院 | Potato residue dehydration method and apparatus |
| CN102205191A (en) * | 2010-03-31 | 2011-10-05 | 沈阳禹华环保有限公司 | Belt press filter for superfine and strong viscous materials |
| CN102210949A (en) * | 2011-06-15 | 2011-10-12 | 东营市兴盛环保科技开发有限责任公司 | Method and device for dehydrating hydrous material |
| CN102343177A (en) * | 2011-10-18 | 2012-02-08 | 黄子君 | Slurry dehydrating process method and equipment |
| CN104528972A (en) * | 2014-11-26 | 2015-04-22 | 蒋子厚 | Ellipse superposition solid-liquid separation apparatus |
| US9242191B2 (en) | 2011-12-13 | 2016-01-26 | Industrial Technology Research Institute | Filtration dehydration apparatus |
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2006
- 2006-01-27 CN CN 200610041747 patent/CN101007226A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423557B (en) * | 2008-03-06 | 2010-12-01 | 四川省农业机械研究设计院 | Potato residue dehydration method and apparatus |
| CN102205191A (en) * | 2010-03-31 | 2011-10-05 | 沈阳禹华环保有限公司 | Belt press filter for superfine and strong viscous materials |
| CN102205191B (en) * | 2010-03-31 | 2013-04-17 | 沈阳禹华环保有限公司 | Belt press filter for superfine and strong viscous materials |
| CN101884857A (en) * | 2010-07-16 | 2010-11-17 | 广西力源新资源开发有限公司 | Vacuum belt press filter |
| CN101884857B (en) * | 2010-07-16 | 2012-09-19 | 广西力源新资源开发有限公司 | Vacuum belt press filter |
| CN102210949A (en) * | 2011-06-15 | 2011-10-12 | 东营市兴盛环保科技开发有限责任公司 | Method and device for dehydrating hydrous material |
| CN102343177A (en) * | 2011-10-18 | 2012-02-08 | 黄子君 | Slurry dehydrating process method and equipment |
| CN102343177B (en) * | 2011-10-18 | 2014-11-26 | 黄子君 | Slurry dehydrating process method and equipment |
| US9242191B2 (en) | 2011-12-13 | 2016-01-26 | Industrial Technology Research Institute | Filtration dehydration apparatus |
| CN104528972A (en) * | 2014-11-26 | 2015-04-22 | 蒋子厚 | Ellipse superposition solid-liquid separation apparatus |
| CN104528972B (en) * | 2014-11-26 | 2016-07-06 | 蒋子厚 | A kind of ellipse folded solid-liquid separating equipment |
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