CN203648253U

CN203648253U - Pretreatment filtering equipment for preparing pure water

Info

Publication number: CN203648253U
Application number: CN201320757908.8U
Authority: CN
Inventors: 施露
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-27
Filing date: 2013-11-27
Publication date: 2014-06-18
Anticipated expiration: 2023-11-27

Abstract

The utility model discloses pretreatment filtering equipment for preparing pure water. The pretreatment filtering equipment comprises a filter tank body, tank body support legs, an air outlet, and a filtered water outlet, wherein a water inlet is formed in the top of the filter tank body, a water distributor is arranged at the lower end of the water inlet, a pipe body of the water distributor is made of a stainless steel pipe, the bottom of the pipe body is connected with a disc-shaped water outlet nozzle through an internal thread fastening member, a plurality of regularly arranged circular water outlets are formed in a water outlet panel of the disc-shaped water outlet nozzle, an upper annular support strip layer and a lower annular support strip layer are welded at the middle of the filter tank body, four holes are respectively symmetrically formed in annular support strips, an upper inverted conical filter net layer and a lower inverted conical filter net layer are respectively locked and fixed by using the holes in the annular support strips and locking nuts, a cylindrical filter net is welded at the bottom end of the lower inverted conical filter net layer, and a filter cloth layer is attached outside the upper inverted conical filter net layer and the lower inverted conical filter net layer, and a granular active carbon and refined quartz sand mixed filter material is filled between interlayers. The pretreatment filtering equipment is simple in structure; and the filter material is not easily hardened, and suspending particles and residual chlorine in water are effectively removed.

Description

Equipment is filtered in a kind of pretreatment for pure water preparation

Technical field

The utility model belongs to water treatment field, and particularly equipment is filtered in a kind of pretreatment for pure water preparation.

Background technology

In pure water preparation, reverse osmosis membrane, as main filter plant, has determined pure water output quality at present, and the difficult replacing of reverse osmosis membrane simultaneously and cost are higher.Therefore, for extending reverse osmosis membrane service life, usually need before film device, increase by a pretreatment and filter equipment, as quartz filter, it also has good removal effect to the suspension in water.But its column type filter courses that adopt more, such structure of filtering layer, not only makes the filter area of filter be limited in the area of filter plate, and then the rate of filtration and the contamination capacity of restriction filter, and easily make that filtrate in filter course hardens, deposition even forms filter cake, cause pure water yield reducation.

Summary of the invention

For addressing the above problem, the purpose of this utility model is to provide removes suspension and chlorine residue in water, filter area is large, anti-compaction, can backwash a kind of pretreatment for pure water preparation filter equipment.

The utility model solves the technical scheme that its technical problem adopts: filter tank body, tank body feet, venthole, filtered water outlet, filter tank body top arranges water inlet, water inlet is also backwash delivery port, water inlet upper end exit surface is external screw thread, water inlet lower end arranges water-locator, water-locator body adopts stainless steel tube to make, body bottom is connected with discoid Water outlet spray head by internal thread securing member, and some regularly arranged circular apopores are set on the water outlet panel of discoid Water outlet spray head; Filter tank body middle part is welded with upper and lower two-layer annular brace bar, on annular brace bar, symmetry is opened four holes respectively, utilize on annular brace bar perforate and the locking nut upper and lower two-layer back taper filter screen that is locked respectively, a cylinder type filter net is welded in lower floor's back taper filter screen bottom; Upper and lower two-layer back taper filter screen outside, with one deck filter cloth, is filled with granular activated carbon and purity quartzite mixing filtrate between upper and lower two-layer back taper filter screen interlayer; Place of filter tank body bottom centre arranges sewage draining exit, and sewage draining exit is communicated with cylinder type filter net bottom, and filter tank body two bottom sides face is symmetrical arranged respectively backwash water inlet.

The utility model compared with prior art has the following advantages and beneficial effect: the back taper filter course that adopts double-deck back taper filter screen and Sandwich filling granular activated carbon thereof and purity quartzite mixing filtrate to form; not only greatly increase filter area; and then the raising rate of filtration and contamination capacity; coordinate the injection water-out manners of the discoid Water outlet spray head of water-locator simultaneously; guarantee fully contacting of pending water and filter course, effectively remove colloid suspension and chlorine residue in water.Simultaneously, in utility model, lower floor's back taper filter course is welded with cylindrical screen pack, and cylinder type filter net outlet at bottom is communicated with sewage draining exit, in filter process, due to mobility and the Action of Gravity Field of water, hard particles dirt can enter in cylinder type filter net to be accumulated, and plays dirt crown_interception, thereby the filtrate that effectively prevents filter course hardens, facilitate periodic maintenance cleaning simultaneously.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is further illustrated.

With reference to Fig. 1, the utility model comprises filter tank body 1, tank body feet 2, venthole 3, filtered water outlet 12, filter tank body 1 top arranges water inlet 4, water inlet 4 is also backwash delivery port, water inlet 4 upper end exit surfaces are external screw thread, water inlet 4 lower ends arrange water-locator 5, water-locator 5 bodys adopt stainless steel tube to make, body bottom is connected with discoid Water outlet spray head 14 by internal thread securing member 13, and some regularly arranged circular apopores are set on the water outlet panel of discoid Water outlet spray head 14; Filter tank body 1 middle part is welded with upper and lower two-layer annular brace bar 6, on annular brace bar 6, symmetry is opened four holes respectively, utilize on annular brace bar 6 perforate and the locking nut upper and lower two-layer back taper filter screen 7 that is locked respectively, a cylinder type filter net 8 is welded in lower floor's back taper filter screen 7 bottoms; Upper and lower two-layer back taper filter screen 7 outsides, with one deck filter cloth 15, are filled with granular activated carbon and purity quartzite mixing filtrate 9 between upper and lower two-layer back taper filter screen 7 interlayers; Filter tank body 1 place of bottom centre arranges sewage draining exit 10, and sewage draining exit 10 is communicated with cylinder type filter net 8 bottoms, and filter tank body 1 two bottom sides face is symmetrical arranged respectively backwash water inlet 11.Sewage draining exit 10 diameters of filter tank body bottom are less than the pipe diameter of water inlet 4, prevent that the excessive filtrate that causes of backwash impulse force runs off.

Filter tank body 1, upper and lower two-layer back taper filter screen 7, cylinder type filter net 8, discoid Water outlet spray head 14 concentrics, and the bottom surface diameter of upper strata back taper filter screen 7 is identical with discoid Water outlet spray head 14 water outlet panel diameters, has guaranteed that water distribution is even.

When filtration operation; close sewage draining exit 10 and backwash water inlet 11; pending water is entered by water inlet 4; arrive upper strata stainless steel back taper filter screen 7 through water-locator 5 water distribution uniformities; the filter cloth 15 of making through nonwoven and upper strata stainless steel back taper filter screen 7 are held back after major diameter particle; former water fully contacts with in purity quartzite mixing filtrate 9 at granular activated carbon, effectively removes colloid suspension and chlorine residue in water.Utilize the physical absorption ability that granular activated carbon is stronger, realize chlorine residue, colloidal particles, organic matter, colourity and the peculiar smell etc. removed in water.And because suspension and chlorine residue in former water, colloidal particles all have destruction to various types of films, wherein reverse osmosis membrane is very responsive to chlorine residue, chlorine residue in granular activated carbon adsorbed water, plays the effect of protection reverse osmosis membrane.

。The filter cloth 15 that the water purifying through granular activated carbon and purity quartzite mixing filtrate 9 is made through lower floor's stainless steel back taper filter screen 7, nonwoven and cylinder type filter net 8 fall into tank body 1 bottom and deposit to after certain water level, discharge from filtered water outlet 12.

Wherein, upper and lower two-layer back taper filter screen 7 adopts respectively the stainless steel twill weave filter screen of braiding lines opposite direction to make, go up on back taper filter screen upper surface and lower floor's back taper filter screen lower surface and make layer of non-woven fabric filter cloth 15 simultaneously, further improve screen pack mesh density, not only prevent that filtrate runs off, and play the supplementary filtration of dirt second interception.Back taper filter course is due to mobility and the Action of Gravity Field of water, and particulate dirt enters cylinder type filter net 8 and accumulates.Cylinder type filter net 8 plays buffering crown_interception, effectively prevents that the filtrate of filter course from hardening, and has greatly improved filter efficiency, and cylinder type filter net 8 bottoms are communicated with sewage draining exit 10, facilitates periodic maintenance cleaning.

When backsurging operation, close venthole 3 and filtered water outlet 12, first open sewage draining exit 10 and clean cylinder type filter net 8 and tank body 1 impurities at bottom.Because water inlet 4 is also that backwash delivery port and upper end exit surface are external screw thread, be convenient for changing connecting pipe, be connected to pollution discharge pond therefore water inlet 4 places are replaced with to blow-off line before backsurging operation, after pipeline is changed, open backwash water inlet booster pump and be symmetrical arranged backwash water inlet 11 to the interior injection pressure water of tank body 1 by filter tank body 1 two bottom sides face simultaneously, in tank body, be filled with a certain amount of Compressed Gas by sewage draining exit 10 simultaneously, strengthen granular activated carbon and 9 disturbances of purity quartzite mixing filtrate in filter course, and because filtrate voidage in back taper filtering layer structure is along filter height distribution gradient, filtrate is difficult for hardening, when backwash under certain backwashing pressure water and Compressed Gas effect time, be very easy to make the particle impurity held back in filter course loosening and along with press water is rinsed, reach the object that improves backwash cleannes and the water-saving that saves time.

Claims

1. equipment is filtered in the pretreatment for pure water preparation, comprise filter tank body (1), tank body feet (2), venthole (3), filtered water outlet (12), it is characterized in that: filter tank body (1) top arranges water inlet (4), water inlet (4) is also backwash delivery port, water inlet (4) upper end exit surface is external screw thread, water inlet (4) lower end arranges water-locator (5), water-locator (5) body adopts stainless steel tube to make, body bottom is connected with discoid Water outlet spray head (14) by internal thread securing member (13), some regularly arranged circular apopores are set on the water outlet panel of discoid Water outlet spray head (14), described filter tank body (1) middle part is welded with upper and lower two-layer annular brace bar (6), on annular brace bar (6), symmetry is opened four holes respectively, utilize the upper perforate of annular brace bar (6) and the locking nut upper and lower two-layer back taper filter screen (7) that is locked respectively, a cylinder type filter net (8) is welded in lower floor's back taper filter screen (7) bottom, described upper and lower two-layer back taper filter screen (7) outside, with one deck filter cloth (15), is filled with granular activated carbon and purity quartzite mixing filtrate (9) between upper and lower two-layer back taper filter screen (7) interlayer, described place of filter tank body (1) bottom centre arranges sewage draining exit (10), and sewage draining exit (10) is communicated with cylinder type filter net (8) bottom, and filter tank body (1) two bottom sides face is symmetrical arranged respectively backwash water inlet (11).

2. equipment is filtered in a kind of pretreatment for pure water preparation according to claim 1, it is characterized in that: described filter tank body (1), upper and lower two-layer back taper filter screen (7), cylinder type filter net (8), discoid Water outlet spray head (14) concentric, and the bottom surface diameter of upper strata back taper filter screen (7) is identical with discoid Water outlet spray head (14) water outlet panel diameter.

3. equipment is filtered in a kind of pretreatment for pure water preparation according to claim 1, it is characterized in that: described upper and lower two-layer back taper filter screen (7) adopts respectively the stainless steel twill weave filter screen of braiding lines opposite direction to make.

4. equipment is filtered in a kind of pretreatment for pure water preparation according to claim 1, it is characterized in that: sewage draining exit (10) diameter of described filter tank body bottom is less than the pipe diameter of water inlet (4).