CN1117599C - Filter material made up of fibre tow and tow joints - Google Patents
Filter material made up of fibre tow and tow joints Download PDFInfo
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- CN1117599C CN1117599C CN 00107758 CN00107758A CN1117599C CN 1117599 C CN1117599 C CN 1117599C CN 00107758 CN00107758 CN 00107758 CN 00107758 A CN00107758 A CN 00107758A CN 1117599 C CN1117599 C CN 1117599C
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- tow
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- filtrate
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Abstract
The present invention relates to a filtering material composed of fiber tows and tow joints. The filtering material is composed of a tow joint and a fiber tow, wherein the fiber tow is fixed in the tow joint, and the length of the fiber tow at both sides of the tow joint is equal or unequal. The filtering material provided by the present invention can also be in various structural styles, for example, the tow joint is in a sliver shape and the multi-beam fiber tow is fixed to the sliver shape. The length of the multi-beam fiber tow at both sides of the tow joint is equal or unequal. The filtering material has the characteristics of large specific surface area of fiber materials, high filtration accuracy, large dirt containing quantity of a filtering bed and high back flushing purity of granule filtering materials.
Description
The present invention relates to a kind of filtering material that constitutes by fibre bundle and tow joint, be used to contain the Separation of Solid and Liquid process of the liquid of solid particle, particularly in water filtration process, be used for holding back and dividing dried up suspended particulate, belong to water-treatment technology field.
In fields such as drink water purifying, sewage disposal, desalinization, salt industry, aquaculture, industry water circulation, suspended particulate be an important process procedure separating of water.The filtering material that adopts in traditional filtering technique is a granule filter material, and as quartz sand, anthracite, ceramic bead etc., this filtrate is a particle shape, and specific area is little, and filtering accuracy is low, and the filter bed pollutant holding capability is little, and the rate of filtration is low.
Synthetic fiber filter material has been used in improvement to granule filter material, and purpose is to utilize specific fiber surface long-pending big, the adjustable characteristics of void ratio.The method that initial stage adopts short-fibre silk to huddle forms filter bed, as Japanese kokai publication sho 56-152709, though this filtrate can remedy the defective that conventional particles media filtration precision is low, the filter bed pollutant holding capability is little, the rate of filtration is low, but because the difference in specific gravity of fiber and water is little, twine mutually between the filament simultaneously, so cleaning performance is poor, and during backwash fiber filtering easily with the backwash drainage loss.
For the defective of avoiding short fiber monofilament filtrate has proposed various fiberizing body filtrates.Adopt among the special fair 1-26726 of Japan and twine legal system spherical fiber filtrate in the liquid.The spy opens the method system spherical fiber filtrate of using crimpling fiber bundle center ligation among the clear 63-93312.Propose fibre bundle centre junction hypodesmus in China's utility model 85200039.1 and made the spherical fiber filtrate.The common trait of above-mentioned spherical filtrate is the symmetrical structure that filtrate is manufactured from the same material, because it is big near filtrate ball center place's fibre dense degree, so be difficult to during backwash clean thoroughly, the residue deposition amount of filter bed is big after the backwash, causes the filter tank capacity utilization low thus.In addition, because the filter bed fibre dense degree that spherical filtrate forms is inhomogeneous, the space between filtrate ball and the ball is big, and current are inhomogeneous when causing filtration, and filter bed reduces effluent quality variation under the high-rate fitration condition to the efficient of holding back of suspended particulate.
China's utility model 98249298.7 has proposed a kind of comet type fiber filter material of being made up of cometary nucleus and tail of a comet tow, this filtering material has overcome the defective of the inhomogeneous and filter bed backwash effect difference of spherical fiber filtering filter bed fibre dense degree, has the solid-liquid separation efficiency height, the advantage that backwash effect is good, but this filtrate one end is solid cometary nucleus, the other end is the loose fibres tow, this configuration has caused the fixing fiber number of each cometary nucleus less, correspondingly, in filter bed, account for big volume to filtering inoperative solid cometary nucleus, thereby the capacity utilization of filter bed is little.
The objective of the invention is to propose a kind of filtering material that constitutes by fibre bundle and tow joint, at the defective of filtering material in the past, it is big to make filtering material both have the fibrous material specific area, the filtering accuracy height, the characteristics that the filter bed pollutant holding capability is big, have the high characteristics of granule filter material backwash wash degree again, simultaneously, this filtrate is made of the fibre bundle more than two strands or two strands, to account for the volume ratio of filtrate big for fiber in the filtrate, and the filter bed that is formed by this filtrate can be given full play to the filtration of fiber, therefore, the capacity utilization height of filter bed, the filter tank volume is little.
The filtering material that is made of fibre bundle and tow joint that the present invention proposes is made up of tow joint and fibre bundle, and fibre bundle is fixed in the tow joint, and fibre bundle is in the equal in length on tow joint both sides or do not wait.
The filtering material that the present invention proposes can also be by multiple different version; First kind of version, tow joint is a strip, is fixed with the multiple fibre tow on the strip, the multiple fibre tow is in the equal in length on tow joint both sides or do not wait.Second kind of version, tow joint has more than two or two, and tow joint is connected mutually, and the centre is linked by the multi beam tow.The third version, fibre bundle fixed form on tow joint is that crossing on the same level or space multistory intersect.
Filtering material of the present invention is made up of the filament boundling more than two strands or two strands tow that forms and the tow joint of being made by solid material, and tow joint has played the effect of anchoring fiber tow, does not have the fixing fibre bundle of tow joint to be loose condition (of surface).Utilize the difference in specific gravity of tow joint and fibre bundle, when filtering, played densification effect to the filtrate fibre bundle, make that the filter bed space that is made of filtrate of the present invention is little, thereby improved the retaining power of filter bed and filtered effluent quality, when backwash, because the difference in specific gravity of tow joint and fibre bundle is bigger, the loose fibres tow is swung with backwash air-flow or current, produced the stronger drag force of getting rid of, simultaneously, the tow joint and the fibre bundle of different filtrates collide mutually, aggravated filtrate suffered mechanicals efforts in water, the irregularly shaped filtrate that makes of filtrate produces rotation, the mechanicals efforts that filtrate is subjected to when having strengthened backwash under the effect of backwash current or air-flow.The acting in conjunction result of above-mentioned several power makes the suspended particulate attached to fiber surface be easy to come off, thereby has greatly improved the wash degree of filtrate, has also reduced the water consumption of backwash.
Description of drawings:
Fig. 1 is the structural representation of the filtering material that designs of the present invention.
Fig. 2 is embodiments of the invention to Fig. 6.
Fig. 7 a and Fig. 7 b are the operation schematic diagram of filtering material of the present invention when being used to filter with the filter bed backwash.
Introduce content of the present invention in detail below in conjunction with accompanying drawing, among Fig. 1 and Fig. 7, the 1st, fibre bundle, the 2nd, tow joint, the 3rd, water inlet pipe, the 4th, the filter tank, the 5th, filter bed, the 6th, supporting layer, the 7th, enter pipe, the 8th, outlet pipe, the 9th, air hose, the 10th, discharge outlet.
Among Fig. 1, filtrate is made of two section chief's degree identical fibre bundle 1 and tow joint 2; Fibre bundle 1 is formed by the filament boundling, and filament can be selected natural fiber, staple fibre, synthetic fibers or inorfil, as filaments such as cotton fiber, glass fibre, terylene, polyamide fibre, acrylic fibers.Fibre bundle can be with in the above-mentioned fiber a kind of, also can form by two or more mixing of above-mentioned fiber.Fiber can use fibers straight, also can use crimped fibre, textured fibre, doughnut or profiled filament etc.Fibre single thread diameter 5-500 micron, the fibre bundle circumscribed circle diameter 0.2-60 millimeter behind the boundling, the length of fibre bundle 1 is the 0.2-500 millimeter.Tow joint 2 is by plastics, pottery, glass, rubber or metal solid or porous body with holes, and the circumscribed circle diameter of tow joint is the 0.3-80 millimeter.Tow joint 2 has played the effect of anchoring fiber tow, simultaneously, utilizes the difference in specific gravity of tow joint 2 and fibre bundle 1, during filtration, tow joint 2 can play the filametntary compaction of filter bed, and under the effect of current or air-flow, tow joint 2 can provide stronger mechanicals efforts during backwash.
Figure 2 shows that the unequal filtering material of length of tow joint two ends fibre bundle.
Figure 3 shows that multiply fibre bundle and the filtrate that tow joint constitutes.
Figure 4 shows that three tow joint series connection, the filtering material that links by two bundle fibers between the tow joint.
Figure 5 shows that the fixed form of fibre bundle on the fiber joint is the filtering material of crossing on the same level.
Figure 6 shows that the fixed form of fibre bundle on the fiber joint is clover leaf filtering material.
Be downward through filtration and the back-flushing operation situation that filtering method is an example explanation filtrate of the present invention with the filter tank below.
Situation when filtering material of the present invention is used to filter is shown in Fig. 7 a.Be filtered liquid and flow to filter tank 4 from water inlet pipe 3, after filter bed 5 filtrations via the filtrate composition, discharge from outlet pipe 8, filter bed 5 is blocked by supporting layer 6, runs off in order to avoid filtrate enters in the water outlet.Filtrate is compressed in part of filter during filtration, because tow joint density is bigger, filter bed is had certain compaction, and the voidage of whole filter bed from top to bottom reduces gradually, thereby has improved the utilization rate of filtrate in the filter bed, has increased the pollutant holding capability of filter bed.
Situation during filtering material filter bed backwash of the present invention is shown in Fig. 7 b.When adopting air-water associating backwash, backwashing water enters the filter tank from backwash water inlet pipe 7, and air enters the filter tank by air hose 9, and the backwash draining is discharged by discharge outlet 10.Under the effect of recoil current or bubble, filter bed expands, the filtrate come-up, fibre bundle is loose condition (of surface) in water, because the difference in specific gravity of tow joint and fibre bundle is bigger, under the effect of backwash current and air bubble, cause filametntary whipping effect, shear action between current and filament, the effect between bubble and filament, the spin effect of filtrate, the result of above-mentioned several effects comes off the particle that adheres on the filament rapidly, cleans purpose completely thereby reach filtrate.
Compare with filtering material in the past, filtering material of the present invention is used for filtering technique its distinctive advantage.To be downward through filtering method is example, the packing of filter bed from top to bottom increases gradually during filtration, correspondingly, void ratio from top to bottom diminishes gradually, therefore, the filter bed holding filth capacity is big, dirty precision height is cut in the filter bed bottom owing to filter bed is closely knit, make a filter bed retaining power and a section dirty precision increase substantially, simultaneously, void ratio from top to bottom diminishes gradually and makes that also the filter bed loss of flood peak is little, helps high-rate fitration.During backwash, particularly during the air-flow backwash, the bubble that is risen by the bottom increases gradually, at the active force of top, the filter tank bubble minute bubbles greater than the bottom, filter tank, because filter bed top filtrate holding filth capacity is big, the mechanicals efforts bigger with top, filter tank adapts, realized for dirtier filtrate, corresponding cleaning intensity is also big, and this is the exclusive characteristics of filtrate of the present invention, consequently saves the water consumption of the power consumption and the backwash of backwash.
Another outstanding feature of filtering material of the present invention is that the shared volume ratio of fiber is bigger in the filter bed, thereby filter bed capacity utilization height, has effectively utilized the filter tank volume more.
These characteristics will further be illustrated in example.
Embodiment 1
Two strands of fibre bundles that constitute by the low elastic polyester filament of 40 microns of filament diameters, the fibre bundle length of tow joint both sides is respectively 20 and 60 millimeters, 1 millimeter of fibre bundle diameter, tow joint is made by the plastics that add ceramic powders, and the tow joint circumscribed circle diameter is 2 millimeters.Filtrate is put into the filter tank and is formed filter bed.1.5 meters of filter tank diameters, filter bed is high 600 millimeters, and the filter tank is high 4.4 meters, and operation result sees the following form.This table has provided the operation result of quartz sand particle filtrate and commercially available spherical fiber filtering simultaneously.
Embodiment 2
| Filtrate | Filtrate of the present invention | Spherical fiber filtering | Quartz sand filter media | The comet type fiber filtering | |
| Specification | 1, the fibre single thread diameter 40, the circumscribed circle diameter of micron 2, long 20,60 millimeter 3 of tow, 1 millimeter 4 of tow diameter, tow joint is 2 millimeters | 1, fibre single thread diameter 40-50 micron 2, filtrate bulb diameter 30-35 millimeter | 0.6-1.3 millimeter in sand grains footpath | 1,50 micron 2 of fibre single thread diameter, long 35 millimeter 3 of fibre bundle, 1.2 millimeter 4 of tow diameter, 2.5 millimeters of cometary nucleus diameters | |
| Filter | Filtering velocity (m/h) water inlet ss (mg/l) water outlet ss (mg/l) | 35-45 15-35 0.5-1.2 | ?25-35 ?15-35 ?0.8-1.5 | ?8-12 ?15-35 ?1.8-4 | ?35-40 ?15-35 ?0.5-1.2 |
| Backwash | Water consumption (%) residue deposition rate (%) | 1.0-1.5 0.4-0.6 | ?1.2-2.2 ?5-18 | ?1.5-2.5 ?0.2-0.5 | ?1.0-1.5 ?0.4-0.6 |
| Filter bed capacity utilization (%) | 85-92 | ?77-89 | ?23-30 | ?80-88 | |
Six strands of fibre bundles that the chinlon filament of filament diameter 60-100 micron constitutes, 2 millimeters of the circumscribed circle diameters of per share tow.Tow joint is made by an elliposoidal porous ceramics, 4.2 millimeters of ellipsoid circumscribed circle diameters, and 6 strands of fibre bundles are that 6 directions of middle mind-set are scattered with tow joint, tow length is respectively 2,2.5,30,35,40,60 millimeters, constitutes the filtrate of spatial configuration.Filter tank size and filter bed height are with embodiment 1, and operation result is as follows:
Filtering velocity (rice/hour) 40-50
Water inlet ss (mg/l) 20-40
Water outlet ss (mg/l) 1-5
Backwash water consumption (%) 1.0-1.5
Residue deposition rate (%) 0.5
Filter bed capacity utilization (%) 88-92
Embodiment 3
By the tow that the polyster fibre silk of filament diameter 60-100 micron constitutes, tow joint is that the cube that the rubber of 1.5 millimeters of the length of sides is made constitutes, and filtrate is composed in series by 5 tow joints, and the fibre bundle length between tow joint and tow joint is the 20-40 millimeter.Filter tank size and filter bed height are with embodiment 1, and operation result is as follows:
Filtering velocity (rice/hour) 30-40
Water inlet ss (mg/l) 15-30
Water outlet ss (mg/l) 1-3
Backwash water consumption (%) 1.5-2.0
Residue deposition rate (%) 2-5
Filter bed capacity utilization (%) 85-90
Claims (4)
1, a kind of filtering material that constitutes by fibre bundle and tow joint, its spy is that described fibre bundle is fixed in the tow joint, fibre bundle is in the equal in length on tow joint both sides or do not wait.
2, filtering material as claimed in claim 1 is characterized in that wherein said tow joint is a strip, is fixed with the multiple fibre tow on the strip, and the multiple fibre tow is in the equal in length on tow joint both sides or do not wait.
3, filtering material as claimed in claim 1 is characterized in that described tow joint has more than two or two, and tow joint is connected mutually, and the centre is linked by the multi beam tow.
5, filtering material as claimed in claim 1 is characterized in that the fixed form of described fibre bundle on tow joint is that crossing on the same level or space multistory intersect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00107758 CN1117599C (en) | 2000-05-26 | 2000-05-26 | Filter material made up of fibre tow and tow joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00107758 CN1117599C (en) | 2000-05-26 | 2000-05-26 | Filter material made up of fibre tow and tow joints |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1273872A CN1273872A (en) | 2000-11-22 |
| CN1117599C true CN1117599C (en) | 2003-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00107758 Expired - Fee Related CN1117599C (en) | 2000-05-26 | 2000-05-26 | Filter material made up of fibre tow and tow joints |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1117599C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463710C (en) * | 2003-05-16 | 2009-02-25 | 上海凡清环境工程有限公司 | Fiber tow for fiber filter |
| CN100515535C (en) * | 2007-01-19 | 2009-07-22 | 东华大学 | Fiber filtering material having sponge structure, its preparing method and use |
| CN101496972A (en) * | 2009-01-14 | 2009-08-05 | 卢普伦 | Novel rotor type fibre filtering material |
| CN103623641A (en) * | 2012-08-22 | 2014-03-12 | 杨志江 | Filtering material made from fiber tows and hollow tow knots |
-
2000
- 2000-05-26 CN CN 00107758 patent/CN1117599C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1273872A (en) | 2000-11-22 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030813 Termination date: 20110526 |