CN2345267Y - Comet-type fibre filter - Google Patents

Abstract

The utility model relates to a comet-typed fibre filter, which is composed of a comet nucleus and a comet tail, wherein, the comet tail is a fibre bundle; one end of the comet tail is loose; the other end of the comet tail is integrated into a bundle fixed in the comet nucleus; the dimaeter of fiber wires is 5-500 mu m; the diameter of the fibre bundle is 1-60 mm; the length of the fibre wires is 5-300 mm; the comet nucleus forms a column shape; the height of the column is 1-30 mm; the cross section of the column forms the shape one of the shapes of the Chinese character 'yi', a round shape, a three-leaf shape, a flying saucer shape, a Yuanbao shape or raindrop shape. The utility model has the advantages of high separation efficiency of liquid and solid, fast filtration speed, large dirt containing amount of a filter bed, good effect of backwashing, low water consumption of backwashing.

Description

Comet type fibrous filter

The utility model relates to a kind of comet type fibrous filter, is used to contain the Separation of Solid and Liquid process of the liquid of solid particle, particularly is used to hold back suspended particulate in water filtration process.

In fields such as drink water purifying, sewage disposal, desalinization, salt industry, aquaculture, industry water circulation, suspended particulate be an important link separating of water.Filtering head in traditional solid-liquid separation process adopts granule filter material, as quartz sand, anthracite etc., uses that this media filtration precision is low, the filter bed pollutant holding capability is little, and the rate of filtration is low.Synthetic fibers and formed body filtrate thereof have been used in the improvement of granule filter material, the method that initial stage adopts short-fibre silk to huddle forms filter course, 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, filtering velocity is low, but because the difference in specific gravity of fiber and water is little, so cleaning performance is poor, and fiber easily runs off during backwash.For the above-mentioned defective of avoiding short fiber monofilament filtrate has proposed various synthetic fibers formed body filtrates, twine the spherical fiber filtering of legal system in the liquid as adopting among the fair 1-26726 of spy, the spy opens among the clear 63-93312 and rolls spherical fiber filtering with the crimpling fiber bundle centre junction, has proposed the fibre bundle centre junction in the Chinese utility model 85200039.1 and has rolled fiber-ball filter media.The common trait of above-mentioned spherical fiber filtering is that symmetrical structure and core are comparatively closely knit, so be difficult to when cleaning clean thoroughly, the residue deposition amount of fibrous nodules filter bed is big after the backwash, cause the filter tank capacity utilization low thus, current are inhomogeneous during filtration, local velocity is excessive, and effluent quality reduces.

The purpose of this utility model provides a kind of comet type fibrous filter, make its characteristics that both had general fibre forming body filtrates such as good filtration effect, filtering velocity be fast, have backwash wash degree height, filter tank capacity utilization height, characteristics that the backwash water consumption is few again.

The comet type fibrous filter of the utility model design is made up of intelligent nuclear and comets tail, and comets tail is a fibre bundle, one end is loose, integrated a branch of being fixed in the intelligent nuclear of the other end, and the filament diameter is 5～500 μ m, fiber bundle diameters is 1～60mm, and the fiber filament length is 5～300mm.Intelligent nuclear is cylindricality, the post height is 1～30mm, the cross sectional shape of post is any in in-line, circle, trilobal, flying saucer shape, ingot-shaped or the raindrop shape, when the cross section is circle, its diameter is 1～20mm, when the cross section was in-line, trilobal, flying saucer shape, ingot-shaped or raindrop shape, its circumscribed circle diameter was 2～30mm.

The comet type fibrous filter of the utility model design.Fiber filtering is made the comet formula structure that an end is solid, an end is loose.Because by plastics, pottery, rubber or the metal intelligent nuclear proportion proportion greater than comets tail, intelligent nuclear has played the densification effect to fibre bundle when filtering, thereby improved the retaining power of filter bed.During backwash, because the difference in specific gravity of intelligent nuclear and comets tail, the comets tail fibre bundle is swung with the backwash current, produce the stronger drag force of getting rid of, mutual collision between the comet body simultaneously, also aggravated filtrate suffered mechanicals efforts in water, the irregular section of intelligent nuclear makes the comet body produce rotation, the mechanicals efforts that filtrate is subjected to when having strengthened backwash under the effect of backwash current.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 backwash water consumption.The cleaning of comet formula fiber filter bed can be adopted independent current backwash, compressed air, and----water replaces several different methods such as backwash to water--air--for current backwash or air.In same filter bed, use the comet filtrate of different size, as different comets tail length or different intelligent nuclear, after the backwash, owing to the difference in specific gravity of filtrate forms waterpower screening AUTOMATIC ZONING, consequently the filter bed porosity diminishes from top to bottom gradually, has improved the pollutant holding capability and the capacity utilization of filter bed.

Description of drawings:

Fig. 1 a and Fig. 1 b are the structures of comet type fibrous filter.

Fig. 2 is several shape schematic diagrames of the intelligent cross section nuclear of the comet type fibrous filter of Fig. 1 (A-A).

Fig. 3 a and Fig. 3 b are the schematic diagram of comet type fibrous filter when being used to filter with the filter bed backwash.

Among Fig. 1, the 1st, comets tail, the 2nd, intelligent nuclear. Intelligent nuclear 1 is made by plastics, rubber, pottery or metal, and intelligent nuclear is of a size of: to circular cross section, its diameter is: 1～20mm is 2～30mm to other section circumscribed circle diameter, and the height of intelligent nuclear is 1～30mm. Comets tail 2 is made of inorfil tow such as the synthetic fibre tows such as polyamide fibre, terylene, eyeball synthetic fibre, polypropylene fibre or glass fibres, and the filament diameter is 5～500 μ m, and fiber bundle diameters is 1～60mm, and the fiber filament length is 5～300mm. Shown in Fig. 1 a and Fig. 1 b, comets tail can be fibers straight tow a or Texturized fibre bundle b.

Fig. 2 is several shape schematic diagrames of the intelligent cross section nuclear A-A of comet formula fiber filtering. Comprise in-line a, circular b, trilobal c, UFO-shape d, ingot-shaped e, raindrop shape f. Wherein the shape of other except circle filtrate because the spin that is subjected to the effect of bubble or current can produce filtrate has relatively increased extra additional mechanicals efforts with the circular cross section filtrate, helps coming off of particle when backwash, washs more thorough.

Situation when comet type fibrous filter is used for filtering is filtered liquid and flows to filter tank 4 from water inlet pipe 3 shown in Fig. 3 a, flows out from outlet pipe 8 after filtering, and filtrate 5 is blocked by supporting layer 6, in order to avoid enter in the water outlet. During filtration, filtrate is squeezed in the bottom in filter tank, because intelligent cuclear density is larger, filter bed is had certain compaction, and the porosity of whole filter bed from top to bottom reduces gradually, has improved the filtrate utilization rate, has increased the filter bed pollutant holding capability.

Situation during the backwash of comet type fibrous filter filter bed is shown in Fig. 3 b, and when adopting compressed air-water associating backwash, backwashing water is from backwashing water water inlet pipe 7, and air enters the filter tank by air hose 9, and the backwash draining is discharged by discharge outlet 10.Because the difference in specific gravity of comets tail and intelligent nuclear, under the effect of backwash current and air bubble, cause collision, current and the interfibrous shearing of fiber and intelligent nuclear, the whipping effect of comets tail, bubble and interfibrous effect, several effects such as the irregularly shaped filtrate spin that causes of intelligent nuclear can make the particle that adheres on the fiber come off rapidly and reach cleans purpose completely.

Embodiment:

By the long 20mm of comets tail, tow that the polyester low stretch tow of filament diameter 20 μ m constitutes, tow diameter 2mm.Intelligent nuclear is made by stainless steel, and section is a trilobal, section circumscribed circle diameter 3.5mm, the long 3mm of intelligent nuclear.The filtration and the back-flushing operation of comet formula filtering bodies filter bed the results are shown in following table, and the operational factor that this table has provided under quartz sand filter bed and fibrous nodules filter bed the same terms simultaneously compares.

		Comet type fibrous filter	Fiber-ball filter media	Quartz sand filter media
					Size		The long 3mm of the long 20mm tow of the tow intelligent nuclear of diameter 2.5mm	Bulb diameter 30mm	Particle diameter 0.6-1.3mm
Filter	Filtering velocity (rice/hour) water inlet ss (mg/l) water outlet ss (mg/l)	35-45 15-35 0.5-2.0	40-50 15-35 0.5-1.8	8-12 15-35 2-5
					Backwash	Water consumption (%)	1.2-1.8	1.5-2.8	1.5-2.5

Claims (1)

1, a kind of comet type fibrous filter is characterized in that this filtering bodies is made up of intelligent nuclear and comets tail, and described comets tail is a fibre bundle, one end is loose, integrated a branch of being fixed in the intelligent nuclear of the other end, and the filament diameter is 5～500 μ m, fiber bundle diameters is 1～60mm, and the fiber filament length is 5～300mm; Described intelligent nuclear is cylindricality, the post height is 1～30mm, the cross sectional shape of post is any in in-line, circle, trilobal, flying saucer shape, ingot-shaped or the raindrop shape, when the cross section is circle, its diameter is 1～20mm, when the cross section was in-line, trilobal, flying saucer shape, ingot-shaped or raindrop shape, its circumscribed circle diameter was 2～30mm.

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