CN108392854A - A kind of filter with multi-layer filter material - Google Patents
A kind of filter with multi-layer filter material Download PDFInfo
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- CN108392854A CN108392854A CN201810220256.1A CN201810220256A CN108392854A CN 108392854 A CN108392854 A CN 108392854A CN 201810220256 A CN201810220256 A CN 201810220256A CN 108392854 A CN108392854 A CN 108392854A
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- water
- water distributor
- filter material
- filter
- tank body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0217—Separation of non-miscible liquids by centrifugal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/08—Thickening liquid suspensions by filtration
- B01D17/10—Thickening liquid suspensions by filtration with stationary filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/12—Auxiliary equipment particularly adapted for use with liquid-separating apparatus, e.g. control circuits
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of filter with multi-layer filter material, including tank body, tank body internal upper part is fixedly installed pretreatment unit, pretreatment unit fixation is communicated with water-distributing device, below pretreatment unit more filter material layer support constructions are fixedly installed along inner tank wall, it is provided with back purge system below more filter material layer support constructions, back purge system is communicated with drainpipe, and drainpipe is communicated with captation.Its oil-water separation is good.
Description
Technical field
The invention belongs to oilfield produced waste water filtering material filter technical fields, are related to a kind of filter with multi-layer filter material.
Background technology
With oil field Persisting exploitation, oilfield sewage whereabouts and water filling water resources problem can be protruded increasingly, and produced-water reinjection is brought
Environmental protection risk it is increasing；In addition the contradiction of oil field development industrial water and local economic construction contention groundwater resources
Increasingly appear, constrain oil field to secondary oil recovery efficient transition and oilfield stable production strategy implementation, certainly will also influence oily ground jointly and
Humorous development environment.Regional water resources residing for oil field are rare, and country and local government can also increase to water resources management dynamics and have
The dynamics of using is repaid, legal track has been stepped into ground water protection management, and oil field water total amount can be strictly controlled, oilfield sewage
Recycling is imperative, while being also the needs that oil field itself continues harmonious development.
More filtering material filters are the relatively broad oily water separating equipments of oilfield sewage fine processing unit application, are to ensure oil
Field sewage disposal key equipment up to standard, but existing more filtering material filter entrance water distributions and back purge system defect are apparent, it is more difficult to
Meet oilfield sewage requirement up to standard, is embodied in：(1) because oilfield sewage mostly have high salinity, corrosion and scaling characteristic compared with
By force, therefore filter water-distributing device mostly uses greatly larger water-distribution nozzle, and less oil recovery water distribution effect preferably more to be distributed, is small-bore
Water-distribution nozzle, but because of water-distributing device unreasonable structure, cause water distribution uneven；(2) water distribution is uneven leads to sewage in filter
Be also easy to produce harmful flow phenomenon such as turbulent flow, turbulent flow, sewage it is more walk short circuit by filtrate, cause the filtrate processing load in part to be more than
Design value, and the utilization not yet in effect of part filtrate, and sand dune type filtrate is easily formed, seriously affect filter oil-water separation；(3)
Back purge system is complicated for operation；(4) back purge system structure is too simple, mostly uses back-flushing structure straight up and down greatly, leads
It is serious that the mixed layer phenomenon of material, filtrate is run in cause backwash process, is unfavorable for the re-using of filtrate；Furthermore the form structure causes
Filtrate backwash is insufficient, and a large amount of sump oils are still furnished on filtrate and suspended matter seriously affects filter oil-water separation.
Invention content
The object of the present invention is to provide a kind of filter with multi-layer filter material, oil-water separation is good.
The technical solution adopted in the present invention is a kind of filter with multi-layer filter material, including tank body, and the fixation of tank body internal upper part is set
It is equipped with pretreatment unit, pretreatment unit fixation is communicated with water-distributing device, is fixedly installed along inner tank wall below pretreatment unit
There are more filter material layer support constructions, is provided with back purge system below more filter material layer support constructions, back purge system is communicated with draining
Pipe, drainpipe are communicated with captation.
The features of the present invention also characterized in that
Tank body includes upper ellipse head, and middle cylinder is fixedly connected under upper ellipse head, is fixedly connected under middle cylinder
There are lower ellipse head, upper ellipse head, middle cylinder, lower ellipse head to be connected to form closed tank body.
Pretreatment unit includes the collection tube for being fixed on ellipse head center, and collection tube one end is located at outside tank body,
The other end passes through the fixation of upper ellipse head to be communicated with cyclonic separation cylinder, the central shaft of cyclonic separation cylinder and the central shaft of tank body
It overlaps, is communicated with sewage water inlet pipe in the middle part of cyclonic separation cylinder, the lower part of cyclonic separation cylinder is communicated with blow-off pipe, wastewater influent
Pipe and the blow-off pipe other end stretch to outside tank body.
Drainpipe is fixed on lower ellipse head, and the central axis of drainpipe is overlapped with the central axis of tank body, drainpipe
The other end leads to outside tank body.
Water-distributing device includes group water distributor, and group water distributor fixes the top of connection cyclonic separation cylinder, and around whirlwind point
It is centrosymmetric distribution from body centre.
Equipped with the multilayer filtrate that grain size is gradually reduced from top to bottom in more filter material layer support constructions, and from top to bottom the bed of material by
Thickness arrives thin.
Back purge system includes root backwash tube, and the equal communicated drainage pipe of root backwash tube, root backwash tube is in drainpipe
The heart is centrosymmetric distribution, and in the shape of a spiral, and root backwash tube forms an angle to updip with horizontal plane backwash tube.
Captation includes a water header, and being uniformly communicated with several catchment on water header is in charge of, and catchmenting, it is vertical to be in charge of
In water header, the central axis of water header and the central axis upright of tank body, catchment the central shaft and water header being in charge of
Central shaft be generally aligned in the same plane in, catchmenting to be in charge of offers opening up inlet, and water header is connected to drainpipe.
Water distributor includes the main water distributor being connected to cyclonic separation cylinder, the central axis and cyclone separating tube of main water distributor
The central axis upright of body, main water distributor are centrosymmetric distribution around cyclonic separation cylinder center, connect on the main water distributor other end
It is connected with the first dry water distributor, is communicated with the second dry water distributor in the middle part of main water distributor, the first dry water distributor and the second dry water distributor are equal
It is vertical with main water distributor and symmetrical along main water distributor, the first dry water distributor, the second dry water distributor and the first dry water distributor and
The central shaft of second dry water distributor is generally aligned in the same plane, and the both ends of the first dry water distributor and the second dry water distributor are mounted on opening
Towards the water-distribution nozzle of more filter material layer support constructions.
Water-distribution nozzle is in horn-like.
The beneficial effects of the invention are as follows：
1. novel water distribution device of the present invention is simple in structure, water-distribution nozzle is horn-like, it is not easy be corroded product or fouling
Object blocks, therefore is particularly suitable for oil field high salinity and produces sewage disposal.
2. water-distributing device of the present invention is in symmetrical structure, water-distribution nozzle is evenly distributed, and 16 water-distribution nozzles are in inside and outside cyclic annular cloth
It sets, more very widely used today water-distributing device water distribution is uniformly not likely to produce harmful flow phenomenon such as turbulent flow, turbulent flow, and sewage uniformly leads to
Filter material is not easy to form sand dune type filtrate, improves filter oil-water separation.
3. entrance pretreatment unit of the present invention can carry out grease pretreatment, reduces filtrate and handle load, extend the filtrate longevity
Life improves water-oil separating efficiency, and in addition eddy flow effect caused by the tangential inlet structure of entrance pretreatment unit, can effectively improve
The water distribution effect of downstream novel water distribution device.
It, can be on filtrate section when backwash 4. novel backwashing device of the present invention uses spiral flow rubbing structure
Strong eddy flow field is formed, similar rotary drum washing machine, which reaches, washes effect by rubbing with the hands, is not easy to run the mixed layer of material, filtrate, is conducive to filtrate again
It utilizes；Furthermore form structure filtrate backwash is abundant, and sump oil and suspension content are less on filtrate, can effectively improve filter
Expect utilization rate, improves oil-water separation.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of filter with multi-layer filter material of the present invention；
Fig. 2 is the A-A views of water-distributing device in Fig. 1；
Fig. 3 is a kind of structural schematic diagram of the back purge system of filter with multi-layer filter material of the present invention；
Fig. 4 is a kind of vertical view of the captation of filter with multi-layer filter material of the present invention；
Fig. 5 is the B-B direction view of the sewage water inlet pipe in Fig. 1；
Fig. 6 is the structural schematic diagram of existing water-distributing device；
Fig. 7 is the C-C direction views of the back purge system in Fig. 1；
Fig. 8 is a kind of water-distributing device water distribution effect numerical simulation tank body section speed cloud of filter with multi-layer filter material of the present invention
Figure；
Fig. 9 is existing water-distributing device water distribution effect numerical simulation tank body section speed cloud atlas；
It is tangential that Figure 10 is that a kind of back purge system top section simulation of filter with multi-layer filter material of the present invention is calculated
Speed vector figure；
It is tangential that Figure 11 is that a kind of back purge system top section simulation of filter with multi-layer filter material of the present invention is calculated
Speed cloud atlas；
Figure 12 is that central shaft is calculated in a kind of back purge system top section simulation of filter with multi-layer filter material of the present invention
Tangential velocity scatter plot on line.
In figure, 1. tank bodies, 2. pretreatment units, 3. water-distributing devices, filter material layer support construction more than 4., 5. back purge systems,
6. captation, 7. drainpipes；
The upper ellipse heads of 1-1., 1-2. middle cylinders, ellipse head under 1-3.；
2-1. collection tubes, 2-2. cyclonic separation cylinders, 2-3. sewage water inlet pipes, 2-4. blow-off pipes；
3-1. water distributors, the main water distributors of 3-2., the first dry water distributors of 3-3., the second dry water distributors of 3-4., 3-5.
Water-distribution nozzle；
5-1. backwash tube；
6-1. water headers, 6-2., which catchments, to be in charge of, 6-3. inlets.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of filter with multi-layer filter material of the present invention, as indicated with 1, including tank body 1,1 internal upper part of tank body fixation is set structure
It is equipped with pretreatment unit 2, the fixation of pretreatment unit 2 is communicated with water-distributing device 3, and 2 lower section of pretreatment unit is fixed along 1 inner wall of tank body
More filter material layer support constructions 4 are provided with, 4 lower section of more filter material layer support constructions is provided with back purge system 5, and back purge system 5 connects
It is connected with drainpipe 7, drainpipe 7 is communicated with captation 6.
Tank body 1 includes upper ellipse head 1-1, and middle cylinder 1-2, middle cylinder are fixedly connected under upper ellipse head 1-1
Lower ellipse head 1-3 is fixedly connected under 1-2, upper ellipse head 1-1, middle cylinder 1-2, lower ellipse head 1-3 are connected
Form closed tank body 1.
Pretreatment unit 2 includes the collection tube 2-1 for being fixed on the centers ellipse head 1-1, the one end collection tube 2-1 position
In outside tank body 1, the other end passes through upper ellipse head 1-1 fixations to be communicated with cyclonic separation cylinder 2-2, cyclonic separation cylinder 2-2's
The center overlapping of axles of central shaft and tank body 1, the middle parts cyclonic separation cylinder 2-2 are communicated with sewage water inlet pipe 2-3, cyclonic separation cylinder
The lower part of 2-2 is communicated with blow-off pipe 2-4, sewage water inlet pipe 2-3 and blow-off pipe the 2-4 other end and stretches to outside tank body 1.
Drainpipe 7 is fixed on lower ellipse head 1-3, and the central axis of drainpipe 7 is overlapped with the central axis of tank body 1,
7 other end of drainpipe leads to outside tank body 1.
As shown in Fig. 2, water-distributing device 3 includes the fixed connection cyclone separating tube of 4 groups of water distributors 3-1,4 groups of water distributor 3-1
The top of body 2-2, and be centrosymmetric distribution around the centers cyclonic separation cylinder 2-2.
The multilayer filtrate that grain size is gradually reduced from top to bottom, and the bed of material from top to bottom are housed in more filter material layer support constructions 4
By thick to thin.
As shown in figure 3, back purge system 5 includes the equal communicated drainage pipe of 4 backwash tubes 5-1,4 backwash tube 5-1 7,4
Root backwash tube 5-1 is centrosymmetric distribution around 7 center of drainpipe, backwash tube 5-1 in the shape of a spiral, and 4 backwash tube 5-1
To updip, form an angle with horizontal plane.
As shown in figure 4, captation 6 includes a water header 6-1, several catchment uniformly is communicated on water header 6-1
It is in charge of 6-2, catchments and be in charge of 6-2 perpendicular to water header 6-1, the central axis of water header 6-1 hangs down with the central axis of tank body 1
Directly, catchment the central shaft and water header 6-1 of being in charge of 6-2 central shaft be generally aligned in the same plane in, catchmenting to be in charge of on 6-2 offers
Opening up inlet 6-3, water header 6-1 are connected to drainpipe 7.
Water distributor 3-1 includes the main water distributor 3-2 being connected to cyclonic separation cylinder 2-2, the central axis of main water distributor 3-2
With the central axis upright of cyclonic separation cylinder 2-2, main water distributor 3-2 is centrosymmetric point around the centers cyclonic separation cylinder 2-2
Cloth is communicated with the first dry water distributor 3-3 on the main water distributor 3-2 other ends, the second dry water distributor is communicated in the middle part of main water distributor 3-2
3-4, the first dry dry water distributor 3-4 of water distributor 3-3 and second are vertical with main water distributor 3-2, and symmetrically divide along main water distributor 3-2
Cloth, the first dry water distributor 3-3, the second dry water distributor 3-4 of the dry dry water distributor 3-3 and second of water distributor 3-4 and first central shaft
It is generally aligned in the same plane, the both ends of the first dry dry water distributor 3-4 of water distributor 3-3 and second are mounted on opening and are supported towards more filter material layers
The water-distribution nozzle 3-5 of structure 4.
Water-distribution nozzle 3-5 is in horn-like.
As shown in figure 5, the import of the sewage water inlet pipe 2-3 of the present invention is tangential entry.
The second dry water distributor 3-4 length of the present invention is less than the first dry water distributor 3-3, water-distribution nozzle 3-5 in horn-like,
Lower horn mouth diameter far from water distributor is about 2-3 times of connected water distribution pipe diameter, and the height of water-distribution nozzle 3-5 about connects
1-2 times of water distribution pipe diameter, the cloth water area and the first dry water distributor of 8 water-distribution nozzle 3-5 on the second dry water distributor 3-4
The cloth water area of 8 water-distribution nozzle 3-5 on 3-3 is as shown in the dashed circle in Fig. 2, as shown in fig. 6, can be seen in conjunction with Fig. 2
It is with obvious effects than existing cloth to go out novel water distribution device moisturizing in a kind of novel oilfield extraction more filtering material filters of sewage of the present invention
Water installations, water distribution effect are good.
Bell-mouthed bore is generally 50-80mm under water-distribution nozzle of the present invention.
4 backwash tube 5-1 of the back purge system 5 of the present invention form an angle α=10- to updip with horizontal plane
20 degree, as shown in fig. 7, the exit central axis of backwash tube 5-1 and the exit central axis and 1 point of intersection of tank body are cut
The angle in face is β, β=15-45 degree, and the hands of spiral of 4 backwashes are consistent, such structure design, is easily existed in backwash
Rotating flow is formed in filter canister body, reaches the effect of washing filtrate by rubbing with the hands.
Equipped with grain size is gradually reduced from top to bottom multilayer filtrate in more filter material layer support constructions 4 of the present invention, and from upper
To the lower bed of material by thick to thin, and filtrate quality is from light to heavy from top to bottom.When the present invention works, multilayer filtrate can arrange layer 2-4,
Filtering layer is more, selects filtering velocity higher, if selecting 2 layers of filtrate, filtering velocity selects 15-20m/s；Three-layer filter, filtering velocity select 20-
25m/s；Four layers of filtrate, it is respectively walnut shell filtering material, ANTHRACITE FILTER MEDIA, quartz from top to bottom that filtering velocity, which selects 25-30m/s, filtrate,
Sand filtering material, magnetic iron ore.
It is that it is the wild pachydermia pecan shell of 1.3-1.4 that walnut shell, which selects relative density, through de- that the present invention, which selects filtrate,
The processes such as fat, grinding, peeling, drying, screening, form the filtrate of grain size 1.2~1.6mm specifications, and corresponding thickness of filter bed is
0.4m；It is about 1.4-1.6, grain size 1.0~1.5mm anthracites, thickness of filter bed 0.3m to select relative density；Select relative density
About 2.6, grain size 0.5~0.7mm quartz sands, thickness of filter bed 0.2m；It is about 4.7 to select relative density, and grain size 0.25~
0.5mm magnetic iron ores, thickness of filter bed 0.1m, oily wastewater flow through from top to bottom, due to upper layer walnut shell or anthracite granule size compared with
Greatly, suspended matter deeper can penetrate filter bed, give full play to filter bed absorption, interception capacity.
The present invention selects more filtrate numbers of plies according to treatment sewage characteristic and processing index, as processing accuracy requires height optional
3 layers or 4 layers are selected, if oily wastewater oil content is higher more than 200ppm, upper layer filtrate is it is not recommended that using walnut shell.
A kind of operation principle of filter with multi-layer filter material of the present invention is：When work, oily wastewater is in inlet pressure
Under the conditions of 0.5MPa, oily wastewater enters via sewage water inlet pipe 2-3 in the cyclone separator cylinder 2-2 of pretreatment unit 2, dirty
Water after pretreatment, through collection tube 2-1 drain, and the solid impurity after separation is drained through blow-off pipe 2-4 by the sump oil after separation, pre- to locate
Sewage after reason enters water-distributing device 3, and then the main water distributor 3-2 through water-distributing device 3, the first dry water distributor 3-3 and second are dry
Water distributor 3-4 is flowed out from each water-distribution nozzle 3-5, is evenly distributed in more filter material layer support constructions, oily wastewater is filtered through multilayer
Sulfate layer flows downhill, the inlet 6-3 through captation 6 are collected, and the fine separative element of subordinate is flowed to through drainpipe 7.
When the present invention works, when throttling through multilayer filtrate, it is about 15-30m/s to keep filtering oily sewage speed, works as tank
It when internal pressure drop reaches 25-100kPa, is backwashed, backwashing period is typically chosen 12-24h, when backwash, first from drainpipe
7 are reversely passed through natural gas or compressed air, and air-flow flows to more filter material layer support constructions 4 through inlet 6-3 and backwash tube 5-1,
So that filtering layer is loosened, expansion, then reversely flows through filter tank with the fluid-mixing of natural gas or air and water, pressure drop is generally normal work
Make pressure drop 1.5~2.0 times stop backwash process, backwashing time when the expansion about 40%~50% upwards of filtering layer volume
About 20-30 minutes, water temperature was not less than 40 DEG C when backwash, to remove the oil-containing impurity of filtrate retention, to strengthen backwash effect
Fruit can add efficient cleaner in backwash water.
The greasy dirt water filtration speed of the present invention should select economic filtering velocity, filtering layer is more, and filtering velocity can be got over according to filtering layer number
Soon, when selecting tank body internal drop index, suitable pressure drop index should be selected, filtering layer is more, and pressure drop is bigger according to filtering layer number.
As shown in Figure 8, Figure 9, two kinds of water-distributing device water distribution effect numerical simulation tank body section speed cloud atlas, in two kinds of devices
When treating capacity is identical, the existing water-distributing device filter cross-section sewage mean flow rate shown in application drawing 6 be only 0.15m/s (not
Add filtrate), speed component is uneven, and applies the water-distributing device filter cross-section sewage mean flow rate 0.60m/s of the present invention (not
Add filtrate), VELOCITY DISTRIBUTION is more uniform, 4 times of about current water-distributing device, illustrates the less generation turbulent flow of novel water distribution device, disorderly
Harmful flow phenomenons such as stream, take full advantage of the centrifugation of multilayer filtrate, improve filter with multi-layer filter material water-oil separating effect
Fruit.
As shown in Figure 10, Figure 11, Figure 12, respectively back purge system top of the present invention section simulation is calculated tangential
Tangential velocity scatter plot on speed vector figure, tangential velocity cloud atlas and central axis, can be clearly from Figure 10-Figure 12
It arrives, novel backwashing device forms apparent rotating flow inside filtrate, can be reached to multilayer filtrate as rotary drum washing machine
To washing effect by rubbing with the hands.It is not easy to run the mixed layer of material, filtrate, is conducive to the re-using of filtrate；Furthermore form structure filtrate backwash is filled
Point, sump oil and suspension content are less on filtrate, can effectively improve filtrate utilization rate, improve oil-water separation.
Claims (10)
1. a kind of filter with multi-layer filter material, which is characterized in that including tank body (1), tank body (1) internal upper part is fixedly installed pre-
Processing unit (2), the pretreatment unit (2) is fixed to be communicated with water-distributing device (3), and pretreatment unit (2) lower section is along tank
Body (1) inner wall is fixedly installed more filter material layer support constructions (4), and recoil is provided with below more filter material layer support constructions (4)
Cleaning device (5), the back purge system (5) are communicated with drainpipe (7), and the drainpipe (7) is communicated with captation (6).
2. a kind of filter with multi-layer filter material according to claim 1, which is characterized in that the tank body (1) includes upper ellipse
End socket (1-1), is fixedly connected with middle cylinder (1-2) under the upper ellipse head (1-1), solid under the middle cylinder (1-2)
Surely it is connected with lower ellipse head (1-3), the upper ellipse head (1-1), middle cylinder (1-2), lower ellipse head (1-3) are linked to be
Integrally formed closed tank body (1).
3. a kind of filter with multi-layer filter material according to claim 2, which is characterized in that the pretreatment unit (2) includes
It is fixed on the collection tube (2-1) of the center ellipse head (1-1), described collection tube (2-1) one end is located at tank body (1) outside,
The other end passes through upper ellipse head (1-1) fixation to be communicated with cyclonic separation cylinder (2-2), the cyclonic separation cylinder (2-2)
The center overlapping of axles of central shaft and tank body (1), cyclonic separation cylinder (2-2) middle part are communicated with sewage water inlet pipe (2-3), institute
The lower part for stating cyclonic separation cylinder (2-2) is communicated with blow-off pipe (2-4), and the sewage water inlet pipe (2-3) and blow-off pipe (2-4) are another
Tank body (1) is stretched to outside in one end.
4. a kind of filter with multi-layer filter material according to claim 3, which is characterized in that the drainpipe (7) is fixed on down
On ellipse head (1-3), the central axis of the drainpipe (7) is overlapped with the central axis of tank body (1), the drainpipe (7)
It is external that the other end leads to tank body (1).
5. a kind of filter with multi-layer filter material according to claim 3, which is characterized in that the water-distributing device (3) includes 4 groups
Water distributor (3-1), the top of the fixed connection cyclonic separation cylinder (2-2) of water distributor (3-1) described in 4 groups, and around cyclonic separation
The center cylinder (2-2) is centrosymmetric distribution.
6. according to a kind of filter with multi-layer filter material required in power described in 3, which is characterized in that more filter material layer support constructions
(4) equipped with grain size is gradually reduced from top to bottom multilayer filtrate in, and from top to bottom the bed of material by thick to thin.
7. a kind of filter with multi-layer filter material according to claim 3, which is characterized in that the back purge system (5) includes 4
Root backwash tube (5-1), 4 backwash tubes (5-1) communicated drainage pipe (7), 4 backwash tubes (5-1) are around row
Water pipe (7) center is centrosymmetric distribution, and in the shape of a spiral, and 4 backwash tubes (5-1) are upwards for the backwash tube (5-1)
Incline, forms an angle with horizontal plane.
8. a kind of filter with multi-layer filter material according to claim 4, which is characterized in that the captation (6) includes one
Water header (6-1) is uniformly communicated with several catchment on the water header (6-1) and is in charge of (6-2), and described catchment is in charge of (6-
2) perpendicular to water header (6-1), the central axis upright of the central axis and tank body (1) of the water header (6-1) is described
Catchment the central shaft and water header (6-1) of being in charge of (6-2) central shaft be generally aligned in the same plane in, described catchment is in charge of (6-2)
On offer opening up inlet (6-3), the water header (6-1) is connected to the drainpipe (7).
9. a kind of filter with multi-layer filter material according to claim 5, which is characterized in that the water distributor (3-1) include with
The main water distributor (3-2) of cyclonic separation cylinder (2-2) connection, the central axis and cyclone separating tube of the main water distributor (3-2)
The central axis upright of body (2-2), the main water distributor (3-2) are centrosymmetric distribution around the center cyclonic separation cylinder (2-2),
It is communicated with the first dry water distributor (3-3) on main water distributor (3-2) other end, connects in the middle part of the main water distributor (3-2)
Be connected with the second dry water distributor (3-4), the first dry water distributor (3-3) and the second dry water distributor (3-4) with main water distributor (3-
2) vertically, and symmetrical along main water distributor (3-2), the first dry water distributor (3-3), the second dry water distributor (3-4) and
The central shaft of one dry water distributor (3-3) and the second dry water distributor (3-4) is generally aligned in the same plane, the first dry water distributor (3-3)
It is mounted on the water-distribution nozzle (3-5) being open towards more filter material layer support constructions (4) with the both ends of the second dry water distributor (3-4).
10. a kind of filter with multi-layer filter material according to claim 9, which is characterized in that the water-distribution nozzle (3-5) is in
It is horn-like.
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| CN201810220256.1A CN108392854A (en) | 2018-03-16 | 2018-03-16 | A kind of filter with multi-layer filter material |
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| CN201810220256.1A Pending CN108392854A (en) | 2018-03-16 | 2018-03-16 | A kind of filter with multi-layer filter material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109205698A (en) * | 2018-09-27 | 2019-01-15 | 西南大学 | A kind of device using crop material filtering aquaculture wastewater |
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