CN2815466Y

CN2815466Y - Sand filter

Info

Publication number: CN2815466Y
Application number: CN 200520011314
Authority: CN
Inventors: 王自治
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-23
Filing date: 2005-04-04
Publication date: 2006-09-13
Anticipated expiration: 2015-04-04

Abstract

The utility model relates to a sand filter which can filter clean water and sewage and can take the clean water as rinse liquid. A sand filtering bed and a bearing layer are arranged in each auxiliary filtering pot in a combined filtering pot of each auxiliary filtering pot, and a high inlet and a low outlet are respectively connected with an aboral collecting tube into a filtering flow path, and can be optionally combined and decomposed. Traditional fixed back-rinse and backwashing are replaced by movable type front-rinse and backwashing, the rinse flow path and a filtering flow path are mutually separated, and simultaneously, both the rinse flow path and the filtering flow path have a movable rinse device. The rinse liquid enters each auxiliary filtering pot via a rinse tube, and is jetted from the rinse device and a waterpower oscillator. Under the drive of a lifting mechanism, the rinse device moves up and down in the sand filtering bed. Under the function of waterpower; sand filtering material all present suspending and boiling states; under the function of a wave field of the waterpower oscillator, the utility model has the effect of acceleration and thorough disaborption, and thus, sand filtering material can be regenerated.

Description

Sand filter

Affiliated technical field

The utility model relates to a kind of water treatment filter plant, and especially oil-contaminated water of oil field is handled the sand filter that filters.

Background technology

The water flooding recovery mode is mostly taked in China's oil field development, and exploitation just, the intermediary and later stages all are accompanied by a large amount of formation waters, makes water-oil separating by dewatering process, contains certain crude oil and solid suspension in the water of separating, and therefore is called as oilfield sewage.China's oil field comprehensive water cut is produced about 7.5 hundred million M of sewage quantity per year up to more than 85% at present ³, the oil field regulation, these sewage not only can not discharge, but also will be as the whole re-injection utilizations in the main water source of waterflooding oil field.After the sewage of separating passes through preliminary treatment again, also must reach the regulation water standard through advanced treating, just can carry out re-injection, with guarantee China more than 80% in, the water flooding recovery effect in less permeable layer oil field.Therefore this deep-bed filter of sand filter just becomes the key equipment of oilfield sewage advanced treating.The people claims that sand filter is the equipment that makes a final check in oil field.

Current known sand filter is to be filter medium with quartz sand, walnut shell in the post jar of garden, and the filter tank top has that water inlet is the flushing water outlet before the filter, and a filter back water out is arranged at the filter tank bottom is the flushing water outlet.Be low in and high out during filtration, the bottom has sand filter bed, assistant officer to hold in the palm layer in the filter tank, and when sewage passed through sand filter bed, the dirt in the water was dammed by sand filter bed absorption.Trapped adsorbate regularly is that flushing liquor washes again with the clear water.Flushing liquor is low in and high out during the washing and filtering medium, promptly so-called " backwash ", and this is the unique method of current sand filter filter medium cleaning and regeneration, makes the filter medium desorption and regeneration.Problem is to be filter medium with quartz sand, and because of quartz sand is the heavy filtrate, conventional backwash mode can't be removed original pore structure state, so be referred to as fixedly hole filter, this filter subject matter is the easy desorption difficulty of absorption.China's Oilfield using all is the quartz sand filtration device before the mid-80, because filter bed belongs to the fixing hole gap structure, desorption is than the more tired dimension of general sewage, and filtering accuracy is low, the needs in less permeable layer oil field in can not satisfying far away.In order to solve a quartz sand fixing hole gap structure desorption difficult problem, reach the desorption effect of on-fixed pore structure, start with from adopting light filter material, the mid-80 is released a kind of with walnut shell filter, be filter medium promptly, filter a desorption difficult problem thereby attempt solves oil-contaminated water of oil field with made walnut shell particle.But, so far there is not stop to cross transformation once coming out, modification scheme has: increase mixer, oil expeller, one-level change two-stage, and in the body, extracorporal circulatory system etc. is multifarious, main transformation around oil removing, desorption aspect, but still do not solve oil-contaminated water of oil field so far and filter a desorption difficult problem, its basic reason is that walnut shell has oleophylic, oil immersion performance, and is unmodifiable.Therefore, the advantage that on-fixed pore structure filter should have is not brought into play substantially, and oil-contaminated water of oil field filters and is in the dock always, and oil-field flooding water quality is generally not up to standard, has serious consequences for the oil field waterflooding extraction, and technology innovation is imperative.Quartz sand has the performance of hydrophilic non-oleophylic, see from this point to be applicable to that oil-contaminated water of oil field filters, but problem is to belong to the heavy filtrate, belongs to fixing hole gap structure filter.Therefore, as can be seen, be used for the filter that oilfield sewage filters, must possess simultaneously: the one, hydrophilic non-oleophylic, the 2nd, non-fixing hole gap structure filter bed, these two are indispensable.Thereby as can be seen, become quartz sand fixing hole gap structure filter into on-fixed pore structure filter be new approaches with by way of.In addition, conventional filter tank diameter is all bigger, generally more than two meters, is up to four meters.Because integral body is quite heavy, the transportation difficulty generally needs to make to on-the-spot, and specification series is numerous and diverse, causes difficulty for manufacturing, transportation, resettlement, installation, maintenance, management.

Summary of the invention

The conventional sand filter of quartz sand heavy filtrate is to belong to " fixedly hole filter ", conventional " backwash " method desorption and regeneration is very difficult, for this reason, the utility model is started with from changing backwashing manner, by cover flusher alive, realizes " square impact backwash ", replace traditional " backwash " method, thereby reach the pore structure state that changes filter bed, become fixing hole gap structure filter and be on-fixed pore structure filter, thoroughly solve the difficult problem that filtrate cleans desorption and regeneration.And overcome " a cover one " a series of inconvenience that heavy traditional structure form is brought, and the utility model provides a kind of sand filter, and this sand filter has the combination and the decomposition function of maneuverability.

The technical scheme in the invention for solving the technical problem is: the flusher of being made up of cleaning hose, syringe, lift, cleaning hose penetrates in the jar from the tank deck central vertical, with connect for movable between the filter tank, the cleaning hose lower end connects with a syringe in the filter tank, upper end and filter tank be concentric vertical connection of hollow screw mandrel of a lift outward, lift connects with the suspension sleeve upper flange, the suspension sleeve spacer flanger connects with the three-way pipe upper flange, three-way pipe is connected with filter tank, and syringe is made up of tap, screen casing, sieve ball, hydroscillator.Lead screw of elevator in a tubular form, it in the screw mandrel flushing water pipeline, the outside is a trapezoidal thread, following is connected with cleaning hose, the higher authorities are connected with a flexible pipe, the flexible pipe other end comes water pipe to be connected with flushing, is activity by sealer between cleaning hose and the suspension sleeve and connects, and syringe can pump under the driving of lift.The flushing effluent outfall is arranged at the filter tank top, filter tank inner bottom part assistant officer takes off and is followed successively by down porous disc, filter screen, upward combined type assistant officer's delamination of porous disc composition on the frame, take sub-filter tank combining structure pattern, filter back water out header, flushing water import header, flushing outlet of sewer header, recovery oil gas header, each road header is communicated with the import and export of each sub-filter tank by arm, and formation is connected in parallel.

The beneficial effects of the utility model are: sand filtering material cleans desorption and regeneration completely, obviously improves clear, sewage water filtration precision and quality, for clear, sewage further improve the advanced treating level and utilizes and create more favourable technical conditions; Can thoroughly change oilfield sewage and filter looks, improve the oil-field flooding situation, in the raising, less permeable layer rejection of oil flied effluent waterflooding development effect.Even discharging also can be guaranteed water standard, prevent the pollution of the environment.Combined type sandfiltration pot structure applications is easy to be economical and practical flexibly.

Description of drawings

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

Fig. 1 is sub-filter tank vertical section and the assembled unit structural map of sand filter embodiment.

Fig. 2 is the side-looking structural map of two assembled unit butt joints of Fig. 1 combination.

Fig. 3 is that the I-I of Fig. 2 is to view.

Fig. 4 is that the II-II of Fig. 2 is to view.

1. bases among the figure, 2,40. filter back water out, 3. filter back water out header, 4. assistant officer's carriage 5. descends porous disc, 6. filter screen, 7. go up porous disc, 8. sand filter bed, 9,39 sub-filter tanks, 10. sieve ball, 11. screen casings, 12. taps, 13. hydroscillator, 14. cleaning hoses, 15. sealers, 16. centering ring, 17. suspension sleeves, 18. aproll pipeline sections, 19,34 flushing outlets of sewer, 20,33 flushing outlet of sewer headers, 21,35. three-way pipe, 22, water inlet before 32 filters, 23. connectors, 24. lifts, 25. the hollow screw mandrel of lift, 26. flexible pipe, 27,28. elbow, 29. flushing water imports, 30. flushing water header, 31. water inlet header before the filter, 36,38 oil gas reclaim outlet, and 37. oil gas reclaim header.

The specific embodiment

Among the embodiment shown in Fig. 1,3,4, flusher keeps the concentric rear flange that penetrates to be connected with suspension sleeve (17) three-way pipe (21), centering ring (16) is arranged between the lower end, cleaning hose (14) lower end is passed sealer (15) back and is connected with the tap (12) of syringe, tap is vertical to be faced on two horizontal planes respectively one group of hydroscillator (I--I) of being made up of hydroscillator mutually and forms syringe (II--II) by sieve ball (10), screen casing (11), has a spherical center to sieve (10) bottom.Worm and gear lift (24) is connected with the upper flange of suspension sleeve (17).Hollow screw mandrel (25) lower end is stretched in the suspension sleeve (17), be connected with cleaning hose (14) by connector (23), the upper end is communicated with flushing water header (30) by elbow (27) flexible pipe (26) elbow (28) flushing water import (29), the flushing outlet of sewer (20) (34) of sub-filter tank respectively with header (20) 33) be communicated with, become special-purpose flushing flow process.When flushing, flushing water is from hydroscillator (13) and sieve ball (10) screen casing (11) ejection, simultaneously lift (24) electronic or manually under begin descending, and progressively go deep in the sand filter bed, in descending process, sand filtering material also suspends from top to bottom thereupon and boiling is got up, syringe continues flushing and begins to chemically examine water quality after arriving bottom dead centre, after water quality reaching standard was qualified, it is left alone without help that syringe is returned the top dead-centre flushing water, and flushing is finished.If the removal in because dispose of sewage becomes branch to the bigger situation of adsorbate desorption difficulty, be to guarantee clearance and regeneration effect, the syringe several times that can pump continuously are till flushing is qualified.Each sub-filter tank can wash separately under the not left alone without help situation of filtration, as: antithetical phrase filter tank (9) washes separately, as long as water inlet (21) filter back water out (2) before the filter is closed, flushing water import (29) sewage import (19) is opened again and get final product, backwash rate can be controlled arbitrarily as required.Can certainly divide into groups to carry out or flushing synchronously, also can wash by stages and in groups.

In another embodiment shown in Figure 1, sub-filter tank (9) (39) is combination mutually, water at first enters the preceding water header (31) of filter before the filter, enter three-way pipe (21) (35) by water inlet (22) (32) before the filter respectively, sieve ball (10) screen casing (11) by the bottom enters in the jar, again by sand filter bed (8) to dirt absorption interception, last porous disc (7) filter screen (6) that filter back water holds in the palm layer by the combined type assistant officer down porous disc (5) assistant officer's carriage (4) respectively after filter back water out (2) (40) and enter filter water out header (3) fail away.Oil gas recovery outlet (36) (38) enter oil gas recovery outlet header (37) and fail away.Flushing outlet of sewer (19) (34) is communicated with flushing sewage header (20) (33) respectively.Therefore, two sub-filter tanks all are symmetrical mutually with the header center from outside to inside, as an assembled unit.Second assembled unit and first assembled unit are identical, after the two several header flange spool docks, the combination of four sub-filter tanks, see that from the side two sub-filter tanks also are is symmetrical mutually from outside to inside, the 3rd, the 4th ... assembled unit docks equally successively.The filter area of each sub-filter tank is known, and size and needed effective filtration area according to the design treating capacity can calculate required sub-filter tank number.In addition,, can decompose and combination with sub-filter tank or assembled unit arbitrarily, have very strong maneuverability and applicability according to the variation of handling the water yield.The maintenance of sub-filter tank, transposing, resettlement, filtration, flushing can be carried out simultaneously separately, are independent of each other, and be very convenient.

Claims

1, a kind of sand filter, having the preceding water inlet of filter is the backwashing water outlet, sand filter bed, the assistant officer holds in the palm layer, filter back water out is the vertical garden post jar of backwashing water import, it is characterized in that: by cleaning hose, syringe, the flusher that lift is formed, cleaning hose penetrates in the jar from filter tank top central vertical, with connect for movable between the filter tank, the cleaning hose lower end connects with a syringe in the filter tank, upper end and filter tank be concentric vertical connection of hollow screw mandrel of a lift outward, lift connects with the suspension sleeve upper flange, the suspension sleeve spacer flanger connects with the three-way pipe upper flange, three-way pipe is connected with filter tank, hollow screw mandrel upper end is connected with a flexible pipe, the flexible pipe other end comes water pipe to be connected with flushing, the flushing effluent outfall is arranged at the filter tank top, and the filter tank inner bottom part has the combined type assistant officer to hold in the palm layer, takes the mutual combining structure of sub-filter tank, advancing of sub-filter tank and sub-filter tank, outlet is connected realization by arm and is connected in parallel with the flushing water header.

2, sand filter according to claim 1 is characterized in that: syringe is made up of tap, screen casing, sieve ball, hydroscillator.

3, sand filter according to claim 1 is characterized in that: lead screw of elevator is the flushing water water inlet pipe in the screw mandrel in a tubular form, and the outside is a trapezoidal thread, and following is connected with cleaning hose, and the higher authorities are connected with a flexible pipe.

4, sand filter according to claim 1 is characterized in that: be movable by sealer between cleaning hose and the suspension sleeve and connect, syringe can pump under the driving of lift.

5, sand filter according to claim 1 is characterized in that: be followed successively by on assistant officer's carriage following porous disc, filter screen, on the combined type assistant officer that forms of porous disc hold in the palm layer.

6, sand filter according to claim 1, it is characterized in that: the preceding water inlet header of filter, filter back water out header, flushing water import header, flushing outlet of sewer header are arranged between sub-filter tank and the sub-filter tank, reclaim the oil gas header, each road header is communicated with the import and export of each sub-filter tank by arm, is to be connected in parallel.