CN208465271U - Hardened filter is broken in multilayer static cutting - Google Patents
Hardened filter is broken in multilayer static cutting Download PDFInfo
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- CN208465271U CN208465271U CN201820876844.6U CN201820876844U CN208465271U CN 208465271 U CN208465271 U CN 208465271U CN 201820876844 U CN201820876844 U CN 201820876844U CN 208465271 U CN208465271 U CN 208465271U
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
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- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
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Abstract
The utility model provides a kind of cutting of multilayer static and breaks hardened filter, belong to oil-contaminated water of oil field processing technology field, hardened mechanism and backwash water distribution system are broken including filtering tank, the filtering feed liquor water distribution system set gradually from top to bottom in the filtrate and filtering tank filtered in tank, the cutting of steel disc static state, the cutting of steel disc static state breaks hardened mechanism and is fixed on the middle part for filtering tank and is located at the top of filtrate.The utility model filter breaks hardened mechanism instead of dynamic motions components such as existing blenders using the cutting of steel disc static state, and the cutting of steel disc static state breaks hardened mechanism using " rake " or broached-tooth design Multilayer vertical steel disc cutting structure and formed by bar dowel, both the impact force to steel disc had been alleviated, it is also beneficial to the cutting and crushing of filtrate hardening layer, backwashing water, which enters from bottom from the top of filtering tank, to be discharged, it builds the pressure when being not in backwash and oil accumulation pneumatosis phenomenon, internals are hardly damaged, while improving the regeneration effect of filtrate.
Description
Technical field
The utility model belongs to technical field of sewage treatment equipment, is related to oil-contaminated water of oil field processing technique, and in particular to
Hardened filter is broken in a kind of cutting of multilayer static.
Background technique
China's onshore oil field largely uses waterflooding extraction mode, and a large amount of oil extraction-generated waste water is with must handling rear re-injection up to standard
Layer could keep stratum energy balance, safeguard oil field steady production.Filter plant is the key equipment in disposing polluted water in oil,
Sewage is when through filtration treatment, due to the crown_interception of filter material surface, filtrate surface layer retain and adsorb a large amount of impurity, especially with
Oilfield chemistry drive exploitation gradually deeply, the polymer (polyacrylamide) in oil field extracted water containing higher concentration, more
The acute formation of filtrate hardening layer, main cause are the presence of polymer, and the adherency on impurity and filtering material particle surface is caused to enhance,
What is formed has the certain thickness and comparable hardening layer of filter area.In filtrate backwash, if cannot timely and effectively break
This hardening layer is gone to sticks and staves, under the promotion of backwashing water, hardening layer rises overally, and may block filtering tank upper screen, cause
Backwash builds the pressure, and in turn results in backwash effect variation；It may cause being largely lost and (running material) for filtrate again.Filtrate backwash effect
Difference and filterins media run-off, and filter effect is influenced, the water degradation for being discharged filtering.
Presently, there are the filters that hardened function is realized brokenly using blender, but due to that need to consume electric energy, and easily cause
Sealing part abrasion causes filter tank leak or leakage erosion serious；And blender is since moving component is excessive, easy to damage, causes often
Maintenance is stopped transport, and construction investment is also higher.Therefore, it is broken using blender hardened, is not a kind of economical and practical to break hardened mode.
In addition, most of filter tops water distribution system uses more perforated pipe housing wrapped screens, backwash is caused to arrange
Water cannot be discharged from filter top, and there are dead zones for filter top, can not effectively oil extraction be vented, influence the regeneration of filtrate
Effect.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of cutting of multilayer static and breaks hardened filter.
The utility model uses following technical scheme:
Hardened filter is broken in a kind of cutting of multilayer static, including filtering tank (1), is located in filtering tank (1)
Filtrate (2) and be located at filtering tank (1) top filtering feed liquor water distribution system (5), be located at filtering tank (1) lower part it is anti-
It rinses water distribution system (4) and the cutting of steel disc static state is broken hardened mechanism (3), the cutting of steel disc static state is broken hardened mechanism (3) and is fixed on
It filters the middle part of tank (1) and is located at the top of filtrate (2).
Above-mentioned multilayer static cutting is broken in hardened filter, and it includes two layers that hardened mechanism (3) are broken in the steel disc static state cutting
The hardened destruction net of above filtrate, the hardened destruction net of each layer of filtrate includes multiple cutting sheets arranged in parallel, adjacent two layers
Cutting sheet is angled to be staggered；Multiple cutting pawls are provided in each cutting sheet, cutting sheet is vertically arranged to form vertical cutting
Structure, the two sides that cutting pawl level is fixed on cutting sheet form " rake " structure or broached-tooth design.
Above-mentioned multilayer static cutting is broken in hardened filter, and cutting sheet is carbon steel or stainless steel, the cutting sheet of adjacent two layers
Stagger angle range is 45 ° -135 °.
Above-mentioned multilayer static cutting is broken in hardened filter, and cutting pawl is reinforcing bar or steel disc, length range 50mm-
400mm。
Above-mentioned multilayer static cutting is broken in hardened filter, and it includes fixing that hardened mechanism (3) are broken in the steel disc static state cutting
The hardened destruction net (31) of upper layer filtrate and the hardened destruction net (32) of lower layer's filtrate in filtering tank (1), upper layer filtrate plate
It includes equidistant three cutting sheets disposed in parallel that knot, which destroys net (31), and the hardened destruction net (32) of lower layer's filtrate includes equidistant hangs down
Three parallel cutting sheets being directly arranged, and the hardened cutting sheet for destroying net (31) of upper layer filtrate and the hardened destruction net of lower layer's filtrate
(32) cutting sheet is vertically arranged.
Above-mentioned multilayer static cutting is broken in hardened filter, and the shape of cutting sheet is pointed at both ends, intermediate wide grading profile
Or long strip-board shape.
Above-mentioned multilayer static cutting is broken in hardened filter, and the backwash water distribution system (4) includes interconnected matches
Water conduit tube (41), range pipe (42) and backwash water inlet pipe (43).
Above-mentioned multilayer static cutting is broken in hardened filter, and the range pipe (42) is arranged in parallel in water conduit tube (41)
Two sides, be in " rich " font；The top of tube body, hole is arranged in the main pipe aperture (411) being arranged on tube body with water conduit tube (41)
Mouth is 0 ° -90 ° upward and with the angular range of the vertical normal with water conduit tube (41), is arranged on the tube body of range pipe (42)
Branch pipe aperture (421) is located at the lower part of tube body, hole mouth down and interlaced arrangement, branch pipe aperture (421) and branch pipe aperture (421)
The angular range of vertical normal is 0 ° -90 °,
Above-mentioned multilayer static cutting is broken in hardened filter, the eyelet of the main pipe aperture (411) and branch pipe aperture (421)
Diameter range is 8mm-12mm；The eyelet flow rates of main pipe aperture (411) and branch pipe aperture (421) are 3m/s-6m/s.
Above-mentioned multilayer static cutting is broken in hardened filter, and the filtering feed liquor water distribution system (5) includes containing for introducing
The filtered water inlet pipe (52) of oily water, for water distribution uniformity water fender (51) and hang lacing wire (53), filtered water inlet pipe (52) peace
Mounted in the top of filtering tank (1)；Water fender (51) by it is multiple hang lacing wire (53) be fixed on filtering tank (1) on, and
Water fender (51) is located at the lower part of filtered water inlet pipe (52), and water fender offers multiple apertures on (51).
Using the above technological means, the utility model has following technical effect that the utility model filter using steel disc
Static state cutting breaks hardened mechanism instead of dynamic motions components such as existing blenders, and cleaning is economical, at low cost, without maintenance, subtracts
Few human cost, and the cutting of steel disc static state is broken hardened mechanism using Multilayer vertical steel disc cutting structure and is formed by bar dowel
" rake " structure, had both alleviated the impact force to steel disc, was also beneficial to the cutting and crushing of filtrate hardening layer；Backwashing water is from bottom
Into after backwashing water distribution system water distribution uniformity, from the top discharge of filtering tank, filtering tank tank interior is not in
It builds the pressure when backwash and oil accumulation pneumatosis phenomenon, internals are hardly damaged, while improving the regeneration effect of filtrate.
Detailed description of the invention
Fig. 1 is the longitudinally cutting figure of the embodiment of the utility model filter；
Fig. 2 is the sectional view that line A-A intercepts along Fig. 1；
Fig. 3 is the sectional view of the embodiment for the backwash water distribution system that line C-C intercepts along Fig. 1；
Fig. 4 is the schematic diagram along the embodiment of the water fender of line B-B interception.
Appended drawing reference indicates in figure are as follows:
1: filtering tank；
2: filtrate；
3: steel disc static state, which is cut, breaks hardened mechanism, and 31: the hardened destruction net of upper layer filtrate, 32: the hardened destruction net of lower layer's filtrate,
33: bar dowel；
4: backwash water distribution system, 41: match water conduit tube, 411: main pipe aperture；42: range pipe, 421: branch pipe aperture；
43: backwash water inlet pipe, 44: drainage hole；
5: filtering feed liquor water distribution system, 51: water fender, 511: aperture, 52: filtered water inlet pipe (backwash drainpipe), 53:
Hang lacing wire；
6: resistance ring；7: skirt；8: upper cover, 9: lower head, 10: manhole.
Specific embodiment
Currently, in oilfield sewage filtration treatment field, existing filter easy to damage, utilization rate in the presence of filtering jar agitator
It is not high and expensive, and backwash and drain and cannot be discharged from top, it causes effectively oil extraction exhaust, backwash to build the pressure
The problem of, to solve the above-mentioned problems, the utility model provides a kind of cut with multilayer steel disc static state and breaks hardened structure and adopt
With the filter of water fender cloth water-bound, the filtration device structure is simple, low in cost, can automatic cutting be crushed filtrate it is hardened
Layer, realize backwash top draining, pollutant can be discharged it is smooth, will not generate build the pressure when backwash and cause internals damage ask
Topic, while helping to improve the regeneration effect to filtrate.
Below in conjunction with attached drawing and specific implementation example, hardened filter is broken to the cutting of the utility model multilayer static and is carried out in detail
It describes in detail bright.
Fig. 1 shows the overall structure example that hardened filter is broken in the cutting of the utility model multilayer static.Referring to Fig. 1, originally
Utility model filter include filter tank 1, positioned at filtering tank 1 in filtrate 2 and filtering tank 1 in from up to
Under set gradually filtering feed liquor water distribution system 5, steel disc static state cutting break hardened mechanism 3 and backwash water distribution system 4, when static
Filtrate 2 is located at the bottom of filtering tank 1 under the effect of gravity, in which:
The cutting of steel disc static state break hardened mechanism 3 include be fixed on filtering tank 1 middle part multilayer (two layers or two layers with
On) the hardened destruction net of filtrate, the hardened destruction net of each layer of filtrate includes multiple cutting sheets arranged in parallel, in each cutting sheet all
Multiple cutting pawls are provided with, cutting sheet is vertically arranged to form vertical cutting structure, and cutting pawl level is fixed on the two sides of cutting sheet,
The cutting sheet of adjacent two layers angled (preferably 45 ° -135 °) is staggered, and the two sides that cutting pawl level is fixed on cutting sheet are formed
" rake " structure or broached-tooth design.In order to realize that hardened function is broken in the cutting of the utility model static state, cutting sheet needs to have certain
Hardness and rigidity, material can be for carbon steel, stainless steel etc.；In order to enhance cutting effect, the shape of cutting sheet itself can be with
For pointed at both ends, intermediate wide grading profile, or the lesser long strip-board shape of thickness, but the shape of cutting sheet itself and unlimited
Due to this；Cutting pawl also needs certain degree of hardness and rigidity, can be reinforcing bar or steel disc, and length is big according to filtering tank 1
Spacing setting between small and cutting sheet, general length range are 50mm-400mm.
In Fig. 1 and embodiment shown in Fig. 2, it includes the hardened destruction of upper layer filtrate that hardened mechanism 3 is broken in the cutting of steel disc static state
Net 31 and the hardened destruction net 32 of lower layer's filtrate, the hardened destruction net 31 of upper layer filtrate include equidistant three cuttings disposed in parallel
Piece, the hardened net 32 that destroys of lower layer's filtrate includes vertically disposed three equidistant with the hardened cutting sheet for destroying net 31 of upper layer filtrate
Parallel cutting sheet, the both ends of each cutting sheet are individually fixed on filtering tank 1, and each cutting sheet is vertically arranged, two sides
Horizontal direction has been evenly arranged multiple cutting claw types, and at " rake " structure (cutting pawl is bar dowel) or broached-tooth design, (cutting pawl is
Steel disc).Cutting sheet in the embodiment is the steel disc for being 50mm with a thickness of 16mm, width, the length and filtering tank 1 of steel disc
Diameter match, cutting pawl be diameter 20mm, length 100mm bar dowel 33, upper layer filtrate it is hardened destroy net 31 cutting
The spacing at piece center and the hardened cutting sheet center for destroying net 32 of lower layer's filtrate is 100mm, the bar dowel 33 of the every side of cutting sheet
Between spacing be 200mm.Welding can be used between cutting sheet and cutting pawl or be screwed.
Referring to Figure 1 and Figure 3, backwash water distribution system 4 includes being interconnected with water conduit tube 41, range pipe 42, recoil
Water inlet pipe 43 and drainage hole 44 are washed, range pipe 42 is connected with water conduit tube 41, and backwash 43 one end of water inlet pipe and water distribution are dry
Pipe 41 is connected, and backwashes and is provided with drainage hole 44 on the tube wall of water inlet pipe 43, for being thoroughly vented in filtering tank 1
Water prevents the bottom of filtering tank 1 from slough occur；It is provided with multiple main pipe apertures 411 on tube body with water conduit tube 41, matches
Multiple branch pipe apertures 421 are provided on the tube body of water branch pipe 42, the backwashing water into backwash water inlet pipe 43 is passed through with water conduit tube
41 main pipe aperture 411 and the branch pipe aperture 421 of range pipe 42 enter the inside of filtering tank 1, and carry out instead to filtrate 2
To flushing.In embodiment shown in Fig. 3, range pipe 42 is arranged in parallel in the two sides with water conduit tube 41, is in " rich " font；Water distribution
The top of tube body is arranged in the main pipe aperture 411 being arranged on the tube body of main pipe 41, and upward, main pipe aperture 411 and water distribution are dry in aperture
The angular range of the vertical normal (or horizontal neutrality line) of pipe 41 is 0 ° -90 °；The branch being arranged on the tube body of same range pipe 42
Pipe aperture 421 is located at the lower part of tube body, hole mouth down and interlaced arrangement, the normal vertical with range pipe 42 of branch pipe aperture 421
The angular range of (or horizontal neutrality line) is 0 ° -90 °.In the embodiment, the eyelet stream of main pipe aperture 411 and branch pipe aperture 421
Fast range is 3m/s-6m/s, and the eye diameter range of main pipe aperture 411 and branch pipe aperture 421 is 8mm-12mm.
Filtering feed liquor water distribution system 5 includes filtered water inlet pipe 52, water fender 51 and hangs lacing wire 53, and filtered water inlet pipe 52 is installed
On the top of filtering tank 1, for introducing oily wastewater, filtered water inlet pipe 52 during the backwash process also referred to as arrange by backwash
Water pipe, for the backwashing water for carrying pollutant to be discharged；Water fender 51 by it is multiple hang lacing wire 53 be fixed on filtering tank 1
On, and water fender 51 is located at the lower part of filtered water inlet pipe 52, water fender 51 prevents filtered water inlet from directly impacting filtering layer, plays uniform cloth
Water effect；Water fender 51 has certain hardness and rigidity, and material is preferably carbon steel, stainless steel etc., and shape is unlimited；Hang lacing wire
For fixing water fender 51, certain degree of hardness and rigidity are also needed, material is preferably carbon steel, stainless steel etc., and shape can be
Reinforcing bar, angle steel or steel disc.Referring to Fig.1 and Fig. 4, in this embodiment, water fender 51 is circle, diameter range 400mm-
1000mm is selected according to the size of filtering tank 1 and filtered water inlet pipe 52, multiple open is offered on water fender 51
Hole, eye diameter range are 8mm-20mm.
Referring to Fig.1, filtering tank 1 includes the upper cover 8 and lower part lower head 9 of the cylinder at middle part, top, upper cover 8
It is covered on the upper and lower ends opening of middle cylinder respectively with lower head 9, forms the pressure vessel of sealing, filter feed liquor cloth water system
System 5 is located at upper cover 8, and the cutting of steel disc static state breaks hardened mechanism 3 and is located at middle cylinder position, and backwash water distribution system 4 is located at
At lower head 9, it is respectively provided with manhole 10 at upper cover 8 and middle cylinder, is used for maintenance repair；The inside of filtering tank 1 is also set
It is equipped with the resistance ring 6 of multiple parallel arrangements, resistance ring 6 is for preventing wall stream.
The cutting of the utility model multilayer static, which is assembled into, according to above-mentioned relation with upper-part breaks hardened filter, the filter
Mainly include two courses of work, i.e. filter process and backwash process when work:
Filter process: oily wastewater is in the case where promoting pumping action, through filtering the filtered water inlet pipe 52 of feed liquor water distribution system 5, gear
After 51 water distribution uniformity of water plate, the inside of filtering tank 1 is entered, is most filtered afterwards through filtrate 2, in filtering material particle retention, absorption
Under effect, the impurity in sewage is removed, water body is purified, filtered purified water enters backwash water distribution system 4, and passes through
It backwashes water inlet pipe 43 and flows out filtering tank.In long-term filter process, due to impurity effect in oily wastewater, filtrate table is easily caused
Face attaching oil, impurity and polymer make upper layer filtrate form hardening layer.
Backwash process: filtered purified water is under backwashing pump effect through backwash water inlet pipe 43, backwash water distribution
After the water distribution uniformity with water conduit tube 41 and range pipe 42 of system 4, into inside filtering tank 1, then filtrate 2 is carried out
Back flush, filtrate 2 expands rising under the promotion of backwashing water, in uphill process, breaks by the cutting of steel disc static state hardened
It when mechanism 3, is cut and is crushed step by step, collided with each other, wash by rubbing with the hands between filtering material particle, under the action of flow shear, filtrate
The pollutant of particle surface is detached from, peels off, and last pollutant, by filter feed liquor water distribution system 5, is arranged with backwashing water through backwash
Filtering tank is discharged in water pipe 52.After stopping backwashing pump, the filtrate of expansion is fluidized under the effect of gravity, and fall after rise to filtering tank bottom
Portion.
The utility model filter breaks hardened mechanism 3 using the cutting of steel disc static state and replaces the dynamic motions such as existing blender
Component, cleaning is economical, at low cost, without maintenance, reduces human cost, and the cutting of steel disc static state breaks hardened mechanism 3 using multilayer
Vertical " rake " structure steel disc cutting structure and formed by bar dowel, had both alleviated the impact force to steel disc, had been also beneficial to
The cutting and crushing of filtrate hardening layer；Backwashing water enters from bottom, after backwashing 4 water distribution uniformity of water distribution system, from filtering tank
The top of tank body 1 is discharged, and filters inside tank 1 without oil accumulation pneumatosis phenomenon, builds the pressure when being not in backwash and internals damage
Phenomenon.The utility model filter overall structure is simply easy to manufacture of constructing, and improves the regeneration effect of filtrate.
It will be appreciated by those skilled in the art that these embodiments are merely to illustrate the utility model, without limitation, this is practical new
The range of type, the various equivalent variations and modification made to the utility model belong to the utility model disclosure.
Claims (10)
1. hardened filter is broken in a kind of multilayer static cutting, including filtering tank (1), the filter being located in filtering tank (1)
Expect (2) and is located at the filtering feed liquor water distribution system (5) on filtering tank (1) top and is located at filtering tank (1) lower part
It backwashes water distribution system (4), which is characterized in that further include that steel disc static state cutting is broken hardened mechanism (3), the cutting of steel disc static state is broken
Hardened mechanism (3) is fixed on the middle part of filtering tank (1) and is located at the top of filtrate (2).
2. hardened filter is broken in multilayer static cutting according to claim 1, which is characterized in that the steel disc static state cutting
The hardened destruction net of filtrate that hardened mechanism (3) includes two layers or more is broken, the hardened destruction net of each layer of filtrate includes multiple parallels
The cutting sheet of column, the cutting sheet of adjacent two layers is angled to be staggered；Multiple cutting pawls, cutting sheet are provided in each cutting sheet
Vertically arranged to form vertical cutting structure, the two sides that cutting pawl level is fixed on cutting sheet form " rake " structure or sawtooth knot
Structure.
3. hardened filter is broken in multilayer static cutting according to claim 2, which is characterized in that cutting sheet is for carbon steel or not
Become rusty steel, and the cutting sheet stagger angle range of adjacent two layers is 45 ° -135 °.
4. hardened filter is broken in multilayer static cutting according to claim 3, which is characterized in that cutting pawl is reinforcing bar or steel
Piece, length range 50mm-400mm.
5. hardened filter is broken in multilayer static cutting according to claim 4, which is characterized in that the steel disc static state cutting
Breaking hardened mechanism (3) includes that the hardened destruction net (31) of upper layer filtrate being fixed in filtering tank (1) and lower layer's filtrate are hardened
It destroys net (32), filtrate hardened destruction net (31) in upper layer includes equidistant three cutting sheets disposed in parallel, and lower layer's filtrate is hardened
Destroying net (32) includes equidistantly vertically disposed three parallel cutting sheets, and the hardened cutting sheet for destroying net (31) of upper layer filtrate
It is vertically arranged with the cutting sheet of hardened destruction net (32) of lower layer's filtrate.
6. hardened filter is broken in multilayer static cutting according to claim 5, which is characterized in that the shape of cutting sheet is two
Head point, intermediate wide grading profile or long strip-board shape.
7. hardened filter is broken in multilayer static cutting according to any one of claims 1 to 6, which is characterized in that described anti-
Rinsing water distribution system (4) includes interconnected with water conduit tube (41), range pipe (42) and backwash water inlet pipe (43).
8. hardened filter is broken in multilayer static cutting according to claim 7, which is characterized in that the range pipe (42)
The two sides with water conduit tube (41) are arranged in parallel in, are in " rich " font；The main pipe aperture being arranged on tube body with water conduit tube (41)
(411) top of tube body is set, and aperture is 0 ° -90 ° upward and with the angular range of the vertical normal with water conduit tube (41), is matched
The branch pipe aperture (421) being arranged on the tube body of water branch pipe (42) is located at the lower part of tube body, hole mouth down and interlaced arrangement, branch pipe are opened
Hole (421) is 0 ° -90 ° with the angular range of the vertical normal of branch pipe aperture (421).
9. hardened filter is broken in multilayer static cutting according to claim 8, which is characterized in that the main pipe aperture
(411) and the eye diameter range of branch pipe aperture (421) is 8mm-12mm；Main pipe aperture (411) and branch pipe aperture (421)
Eyelet flow rates are 3m/s-6m/s.
10. hardened filter is broken in multilayer static cutting according to any one of claims 1 to 6, which is characterized in that the mistake
Filtering feed liquor water distribution system (5) includes for introducing the filtered water inlet pipe (52) of oily wastewater, for the water fender of water distribution uniformity
(51) it and hangs lacing wire (53), filtered water inlet pipe (52) is mounted on the top of filtering tank (1)；Water fender (51) is hung by multiple
Lacing wire (53) is fixed in filtering tank (1), and water fender (51) is located at the lower part of filtered water inlet pipe (52), water fender (51)
On offer multiple apertures.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018204624760 | 2018-04-03 | ||
| CN201820462476 | 2018-04-03 |
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| Publication Number | Publication Date |
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| CN208465271U true CN208465271U (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810580027.0A Pending CN108479132A (en) | 2018-04-03 | 2018-06-07 | Hardened filter and method are broken in multilayer static cutting |
| CN201820876844.6U Active CN208465271U (en) | 2018-04-03 | 2018-06-07 | Hardened filter is broken in multilayer static cutting |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810580027.0A Pending CN108479132A (en) | 2018-04-03 | 2018-06-07 | Hardened filter and method are broken in multilayer static cutting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479132A (en) * | 2018-04-03 | 2018-09-04 | 中国石油天然气股份有限公司 | Hardened filter and method are broken in multilayer static cutting |
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| CN113101707B (en) * | 2021-04-21 | 2022-06-28 | 东北石油大学 | Multi-stage hydraulic self-pulse backwashing mechanism, fine filter and backwashing method |
| CN114558358A (en) * | 2022-03-24 | 2022-05-31 | 兖矿能源集团股份有限公司 | Mine water reuse system and backwashing method thereof |
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| CN204384920U (en) * | 2015-01-20 | 2015-06-10 | 大庆惠博普石油机械设备制造有限公司 | Mechanical agitation type walnut shell filter |
| CN205796662U (en) * | 2016-06-17 | 2016-12-14 | 中油辽河工程有限公司 | A kind of pressure filter tank for disposing polluted water in oil |
| CN206008130U (en) * | 2016-09-13 | 2017-03-15 | 安洁士环保（上海）股份有限公司 | A kind of internals that filter are combined the unit |
| CN108479132A (en) * | 2018-04-03 | 2018-09-04 | 中国石油天然气股份有限公司 | Hardened filter and method are broken in multilayer static cutting |
-
2018
- 2018-06-07 CN CN201810580027.0A patent/CN108479132A/en active Pending
- 2018-06-07 CN CN201820876844.6U patent/CN208465271U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479132A (en) * | 2018-04-03 | 2018-09-04 | 中国石油天然气股份有限公司 | Hardened filter and method are broken in multilayer static cutting |
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| CN108479132A (en) | 2018-09-04 |
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