CN2609633Y - Improved precision filter device - Google Patents

Abstract

The utility model relates to an improvement of a water high accuracy filtering device, in particular to an improvement of a filtering element and a control valve of the filtering device, which is characterized in that the filtering element comprises a metal perforated water-collecting pipe and two elastic fibrous filtering layers winded outside, and the valve control is realized through utilizing mechanical four-valve linkage. The filtering element of the utility model has great strength and can meet finely filtering requirement, the elastic fibrous filtering layer can be inflated during backwashing and the aperture is enlarged, which makes intercepted contamination easy to fall off, with complete washing and great effect. The two elastic fibrous filtering layers formed through winding result in hole gradient in thickness direction, which can not only form surface filtering but also form deep level filtering during filtering, wherein large surface layer gap can contain a plurality of large particles to ensure the filtering element not be quickly blocked, and the small inner layer aperture is favorable to block fine particles to ensure filtering accuracy. Yielding water can reach five classes of 0.5 micron, 1 micron, 2 microns, 3 microns, 5-10 microns. After oleophobic treatment, the winded elastic fabric does not stick oily soil, and can be applicable for oil-containing sewage water treatment. A mechanical linkage change-over valve not only ensures working synchronism of the four-valve, but also has high mechanical on-off dependability.

Description

A kind of improved fine filtering device

Technical field

Utility model is the improvement to water high accuracy filter, relates in particular to the improvement of filter filter core and control valve.

Background technology

Some special occasions has higher requirements to the water degree of purity, and for example oil-field flooding displacement of reservoir oil secondary recovery technology re-injection water needs water purification is made further smart filtration treatment.Existing normally used crystal's filter such as back production water filling fine filter, have to support in the nothing of employing and melt and spray the tubular element that ultra-fine monofilament is made, though it has smart preferably filter effect, but because filter core does not have the support liner, structural strength is relatively low, and high pressure is filtered the fracture that causes filter core easily, and machine-processed in addition filament twines filter course, backwash difficulty, dirt are difficult for going out.The plastic hollow of employing antipriming pipe outsourcing filter paper filter core is also arranged, though increasing plastic inner lining intensity increases, but still can not satisfy the high pressure requirement, the especially as easy as rolling off a log obstruction of filter paper filtering layer, backwash are difficult for holding back dirt again and go out and clean up, thereby can cause cartridge surface to produce the mucous membrane bacterium because of dirt exists, a large amount of breedings of bacterium, serious even generation foundry loam does not only reach smart filter effect, also can cause secondary pollution that filtering water is worsened, not reach the crystal and filter requirement.Macromolecular material sintered bar filter core, its fixed apertures and crooked is again not only easily stopped up, and hold back dirt and be difficult for backwash and discharge, cause bacterial reproduction, with the cleaning that recoils of acid or alkali lye, though certain effect is arranged, clean discharging of waste liquid and easily cause secondary pollution, also need otherwise processed.Therefore all there is defective in various degree in above-mentioned existing smart filter core, and still having is worth improved place.

Secondly, existing filter filtration work and backwash control valve all adopt independent magnetic valve, however magnetic valve work long hours and not only can cause valve work to be not closed completely, cause leakage, and each valve is difficult for synchronously, the suitable property of control is poor automatically, influences operate as normal.

Summary of the invention

The purpose of utility model is to overcome the deficiency of above-mentioned prior art, and a kind of improved filtering accuracy height is provided, and filer element strength is good, the fine filtering device that backwash is simple and effective.

It is good that another purpose of utility model is to provide a kind of valve to switch synchronism, and reliable operation can adapt to the fine filtering device of control automatically.

Utility model first purpose realizes, the main improvement is that filter element adopts the outer elastomer filtering layer that twines of metal porous plug (collector pipe), both improved filer element strength, the elastomer that can utilize winding again is when backwash, the high pressure backwash water makes twines the expansion of elastomer micropore, make filtration hold back particulate and gone out, thereby effectively guaranteed the recoil cleaning performance.Specifically, the utility model fine filtering device comprises filtration barrel body and the built-in filter core of placing side by side, and valve control device, it is characterized in that said filter core reaches the outer elastomer filtering layer that twines by metal porous collector pipe and forms.

Utility model filter core elastomer twines filtering layer, is excellent with the multiply cord that adopts spray fusing elastomer silk to be twisted into especially, and the multiply cord not only helps filtering layer and twines and make, and the multiply cord twines when more helping backwash the expansion of expansion micropore dirt is gone out.Said winding filtering layer thick with 1-4cm for well, this thickness not only has filter effect preferably, and filtration resistance is little.Said winding elastomer filtering layer, a kind of better structure is the interior tight double-deck filtering layer of pine outside thickness direction forms winding, internal layer adopts and tightly twines than the fine fibre rope, as filtering security personnel's filtering layer, bear secondary filter, skin adopts crude fibre rope pine winding slightly, gives filter course as holding back dirt, thereby winding filtering layer hole is changed in gradient at thickness direction, and wherein the inside/outside layer thickness is comparatively suitable with 50-70%: 50-30%.

For improving the filter taps functional reliability and switching synchronism, utility model is filtered, the backwash transfer valve, with four magnetic valves that work alone separately, change rectangle into and put mechanical fluted disc linkage combination valve, promptly four valves are put with the rectangular position of station with the diagonal angle, rotate by being arranged on middle same gear, drive two and open two pass switchings, can control four valves simultaneously by a decelerator like this and form two or two switches synchronous operation/backwash switching.

For guaranteeing smart filter requirement, utility model also can be provided with Vltrasonic device in filter, produce the implosion ultrasonic bubble in short-term by ultrasonic wave and filter core is cleaned killing bacteria; And the high-frequency electrostatic field generator is set in filter, and by producing strong electrostatic field such as 12000V electrostatic field, carry out electronic descaling, kill the bath sterilization.

Utility model is owing to twine screen pipe with machine-processed monofilament, the center of changing into has the metal collector pipe to support the outer elastomer structure of filtering layer that twines, can not only satisfy the smart requirement of filtering, and intensity is good, elastomer filtering layer especially, and the high pressure backwash water can make the elastomer filtering layer expanse of winding during recoil, it is big that the aperture becomes, hold back dirt and go out easily, backwash is thorough, and cleaning performance is good.Secondly, twine the double-deck filtering layer that forms, cause thickness direction hole gradient, both can form the surface and give filtration, can form the smart filtration of deep layer again, the space, top layer can hold many bulky grains, guarantees the unlikely rapid obstruction of filter core, and the internal layer aperture is little, help stopping fine particle, guarantee filtering accuracy, thereby have high filtration efficiency that water outlet can reach 0.5um, 1um, 2um, 3um 5-10um Pyatyi.In addition, twine elastomer after oleophobic is handled, not sticking greasy dirt also can be used for oily waste water treatment.Mechanical linkage combination transfer valve not only effectively guaranteed four valve work synchronisms, and machinery opens and closes the reliability height.Built-in Vltrasonic device and high-frequency electrostatic field generator can effectively kill bacterium, algae in the filter, reach the cleaning to cartridge surface, guarantee non-secondary pollution.

Below in conjunction with a specific embodiment, further specify utility model structure and advantage.

Description of drawings

Fig. 1 is a utility model example structure schematic diagram.

Fig. 2 is the filter cartridge construction schematic diagram.

Fig. 3 is the linkage combination valve structural representation.

The specific embodiment

Embodiment: referring to accompanying drawing, the utility model fine filtering apparatus, comprise filter cylinder 19, electronic descaling, high frequency sterilizer 1 are arranged at filter cylinder Nei Ding top, release 2 (can produce the 12000V electrostatic field in filter cylinder) that connect sterilizer are filtered header tank 20, are arranged in the filter core 3 on the header tank side by side, the ultrasonic gas of the bottom backwash device 4 that shakes, combination interstage valve 5.Filter core is made up of inner filtering layer 10 and out filtering layer 9 that stainless steel perforated pipe 6 and elastomer rope twine, two ends respectively by fastening bolt 7 and 12 and gland 8 and 11 compress, to be that the 1mm cordage is tight twine and the winding of 3mm cordage pine constitutes the diameter that filtering layer 10 and 9 is twisted into by the chemical fibre spray fusing elastic yarn of silk footpath 150-300 μ m respectively, the thick 2cm of inner filtering layer wherein, the thick 1cm of out filtering layer, the average pore size that obtains gradual change is a 5-10 μ m filter course.The combination interstage valve is made up of with the rectangular two groups of different station valves putting the location of station the diagonal angle, by in- line gears 13,14,15,16 and central gear 17 engagement interlocks, realizes diagonal angle two or two on/off switch.

During normal filtration, filtered water is entered by cylindrical shell bottom through control valve 5, and the support set water pipe was flowed to header tank in water entered by security personnel's layer after giving filter course, finished to filter and moved.Hold back the increase of dirt along with filtering layer, cause filtration resistance to increase, start combination valve 5, close into water, open the backwash water inlet, the high pressure backwash water is carried out backwash through header tank to filter core, make the outer elasticity filtering layer of filter core expand, the aperture swells, and holds back dirt impurity and is able to backwash and goes out, and finishes backwash process.

Claims (10)

1, a kind of fine filtering device comprises filtration barrel body and the built-in filter core of placing side by side, and valve control device, it is characterized in that said filter core reaches the outer elastomer filtering layer that twines by metal porous collector pipe and forms.

2,, it is characterized in that said elastomer is the 1-3mm multiply rope that spray fusing elastomer silk is twisted into according to the described fine filtering device of claim 1.

3,, it is characterized in that the thick 1-4cm of said fiber filtering layer according to the described fine filtering device of claim 1.

4,, it is characterized in that said fiber filtering layer is made up of tight filtering layer of internal layer and outer loose filtering layer according to claim 1,2 or 3 described fine filtering devices.

5,, it is characterized in that said inside/outside thickness of filter bed than being 50-70%: 50-30% according to the described fine filtering device of claim 4.

6, according to claim 1 or 5 described fine filtering devices, it is characterized in that said valve control device is the combination interstage valve that four valve rectangles are put, the same station of diagonal angle two valves wherein, the opposite station of another diagonal angle two valves realizes that by a gear that is arranged on the center two open two and close synchronously and switch.

7, according to claim 1 or 5 described fine filtering devices, it is characterized in that being provided with Vltrasonic device in the said filter.

8,, it is characterized in that being provided with in the said filter high-frequency electrostatic field generator according to claim 1 or 5 described fine filtering devices.

9,, it is characterized in that being provided with in the said filter frequency conversion high-pressure electrostatic field generator according to the described fine filtering device of claim 7.

10, according to the described fine filtering device of claim 4, it is characterized in that said inner filtering layer is entwined by 0.5-1mm multiply rope, out filtering layer is entwined by 1-3mm multiply rope.

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