CN108159758A - The positive inner pressed fore filter rinsed with backwashing function of band - Google Patents
The positive inner pressed fore filter rinsed with backwashing function of band Download PDFInfo
- Publication number
- CN108159758A CN108159758A CN201810046893.1A CN201810046893A CN108159758A CN 108159758 A CN108159758 A CN 108159758A CN 201810046893 A CN201810046893 A CN 201810046893A CN 108159758 A CN108159758 A CN 108159758A
- Authority
- CN
- China
- Prior art keywords
- filter
- bridgeware
- skeleton
- cavity
- channel mouth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011001 backwashing Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000007704 transition Effects 0.000 claims description 10
- 238000001746 injection moulding Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 238000011045 prefiltration Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 238000004140 cleaning Methods 0.000 description 11
- 239000012535 impurity Substances 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
Abstract
The inner pressed fore filter with backwashing function is just being rinsed the present invention relates to a kind of band, including fore filter ontology, the fore filter ontology includes head, filter flask, filter core, skeleton and the drainage element set on filter flask bottom, skeleton is equipped with drainage channel, skeleton top is connected with the water inlet end of filter core, skeleton bottom is additionally provided with the positive draining runner switching mechanism rinsed and backwash, draining runner switching mechanism is equipped with first passage mouth and second channel mouth, second channel mouth can open or close, when second channel mouth is closed, drain outlet, first row water flow passage is formed between first passage mouth and drainage element；When second channel mouth is opened, second row water flow passage is formed between second channel mouth, first passage mouth and drainage element；It is located at the direct or indirect rotary seal in second channel mouth lower part between the filter flask inner wall and draining runner switching mechanism.The present invention is reasonable in design, easy to process, can easily switch draining runner.
Description
Technical field
The inner pressed fore filter with backwashing function is just being rinsed the present invention relates to a kind of band, is belonging to filter plant technology
Field.
Background technology
Fore filter of the prior art includes：Head, upper end and head connection filter flask, connect with filter flask lower end
Draining sealing element and the drainage element being connect with draining sealing element are provided with filter mechanism in filter flask.During use, water from
The water inlet of head flows into the gap between filter flask and filter mechanism, and the center of filter mechanism, Ran Houyou are flowed into after filtering
Filter mechanism center flow to the water outlet of head.
Using after a certain period of time, filter mechanism can be blocked fore filter by the impurity in water, be cleared up to protect
Filter effect is held, existing fore filter is since structure constraint, draining runner can not need to switch according to operating mode, cleaning way
It is single or intake direct washing and filtering mechanism surface by water inlet, as just rinse or pass through backwash, it is positive to rinse
Cannot free switching be needed according to operating mode between backwash, with cleaning filter mechanism more thoroughly, present invention seek to address that
This technical problem.
Invention content
It is an object of the invention to solve the deficiencies in the prior art, a kind of band just internal pressure of flushing and backwashing function is provided
Formula fore filter, this is reasonable in design, easy to process, can easily switch draining runner, with the positive flushing of realization and instead
The efficient switching rinsed, and then realize the efficient cleaning of filter mechanism.
The technical solution adopted by the present invention to solve the technical problems is：
The positive inner pressed fore filter rinsed with backwashing function of band, including fore filter ontology, the fore filter
Ontology includes the head with entery and delivery port, the filter flask being connect with head, filter core, the skeleton in filter core being placed in filter flask
With the drainage element set on filter flask bottom, skeleton is equipped with drainage channel, and skeleton top is connected with the water inlet end of filter core, and skeleton bottom is also
Equipped with the positive draining runner switching mechanism rinsed and backwash, draining runner switching mechanism is equipped with first passage mouth and second channel
Mouthful, second channel mouth can open or close, when second channel mouth is closed, drain outlet, first passage mouth and drainage element
Between formed first row water flow passage；When second channel mouth is opened, the is formed between second channel mouth, first passage mouth and drainage element
Two draining runners；
It is located at the direct or indirect rotary seal in second channel mouth lower part between the filter flask inner wall and draining runner switching mechanism.
Preferably, at least part abuts between the filter core inner wall and skeleton side wall, generates stiction F1, the draining
Runner switching mechanism includes the cavity set on skeleton bottom and the bridgeware outside cavity, first passage mouth and second
Passway is set on cavity, and the bridgeware can rotate to open or close second channel mouth, bridgeware rotation relative to cavity
When and cavity between frictional force be F2, the F1 ＞ F2；
The bridgeware is located at second channel mouth with lower part and the direct or indirect rotary seal of filter flask inner wall.
Preferably, the water inlet end rotary seal of the skeleton top and filter core, generation stiction are F1；
The draining runner switching mechanism include set on skeleton bottom a cavity and the bridgeware outside cavity, first
Passway and second channel mouth are set on cavity, and the bridgeware can rotate to open or close second channel relative to cavity
Mouthful, frictional force when bridgeware rotates between cavity is F2, the F1 ＞ F2；
The bridgeware is located at second channel mouth with lower part and the direct or indirect rotary seal of filter flask inner wall.
The present invention is reasonable in design, easy to process, can easily switch draining runner, to realize positive flushing and recoil
The efficient switching washed, and then realize the efficient cleaning of filter mechanism.Its specific working mode is as follows：Second is closed when bridgeware to lead to
It is backwash mode during road junction, flow is discharged via the first passage mouth of drain outlet, cavity by drainage element, and water flows through
It crosses the siphon power generated during draining runner the impurity of embedded cartridge surface is sucked out, and then exhaust；Bridgeware rotating opening second
During passway, flow is expelled directly out via second channel mouth and first passage mouth by drainage element, is positive rinse mode, is directly rinsed
Fall the large granular impurity of filter core inner surface.F1 ＞ F2 ensure that skeleton will not synchronize when bridgeware opens or closes second channel mouth
Rotation.
Preferably, the cavity formed with skeleton clamping by outwardly protruding the outer mold cavity component of setting or integrated injection molding into
Type.
Preferably, the outer mold cavity component is equipped with locating part, for limiting the rotational angle of bridgeware.Locating part is set,
Under the premise of ensureing that bridgeware opens or closes passway completely, bridgeware is further rotated, including actively or passively rotating,
Overcome stiction F1, realize the rotation of skeleton, realize that skeleton synchronizes the effect for scraping filter core.
Preferably, the outer mold cavity component is equipped with limiting groove, and limiting raised line is correspondingly provided on bridgeware, recessed by limiting
The cooperation of slot and limiting raised line, bridgeware are rotated coaxially with outer mold cavity component and are connect.It is circumferential between bridgeware and cavity to turn
It is dynamic, but displacement radially cannot be generated, improve the reliability and stability of the present invention.
Preferably, the drainage channel includes several siphon part compositions with siphon, and the siphon part axially blocks
It is connected to skeleton outer wall.
Preferably, it is directly abutted between the filter core inner wall and skeleton side wall.When directly abutting, realized by skeleton to filter
The cleaning of in-core wall, easy to operate, processing cost is low.
Preferably, it is abutted indirectly by siphon part between the filter core inner wall and skeleton side wall.By increasing cleaning item, change
Kind cleaning performance provides a kind of more preferably realization method.
Preferably, the filter flask lower end is rotatably connected to operation knob, and transition piece is embedded in operation knob, and bridgeware leads to
It crosses transition piece to be fixedly connected with operation knob, drainage element is set on operation knob bottom, and the bridgeware passes through transition piece and filter flask
The indirect rotary seal in bottom.
The beneficial effects of the invention are as follows：The present invention is reasonable in design, easy to process, can easily switch blowdown stream
The efficient cleaning of filter mechanism to realize the positive efficient switching rinsed and backwash, and then is realized in road.
Description of the drawings
Fig. 1 is the stereogram of the present invention；
Fig. 2 is the sectional view of Fig. 1；
Fig. 3 is the exploded view of Fig. 1.
In figure：1st, filter flask, 2, operation knob, 3, drainage element, 4, skeleton, 5, cavity, 5a, outer mold cavity component are 5b, first logical
Road junction, 5c, second channel mouth, 6, bridgeware, 7, transition piece.
Specific embodiment
Below by specific embodiment, and with reference to attached drawing, technical scheme of the present invention is described in further detail.
Embodiment 1：
Band as shown in Figure 1,2 and 3 is just rinsing and the inner pressed fore filter of backwashing function, including fore filter sheet
Body, the fore filter ontology include the head with entery and delivery port, the filter flask 1 being connect with head, the filter being placed in filter flask 1
Core, the skeleton 4 in filter core and the drainage element 3 set on 1 bottom of filter flask, skeleton 4 are equipped with drainage channel, 4 top of skeleton and filter
The water inlet end connection of core, 4 bottom of skeleton are additionally provided with the positive draining runner switching mechanism rinsed and backwash, draining runner switching machine
Structure is equipped with first passage mouth 5b and second channel mouth 5c, and second channel mouth 5c can be opened or closed, and second channel mouth 5c is closed
When, first row water flow passage is formed between drain outlet, first passage mouth 5b and drainage element 3；When second channel mouth 5c is opened,
Second row water flow passage is formed between second channel mouth 5c, first passage mouth 5b and drainage element 3；
It is directly or indirectly rotated positioned at second channel mouth 5c lower parts between 1 inner wall of filter flask and draining runner switching mechanism close
Envelope.
Specific to the present embodiment, the water inlet end rotary seal of 4 top of skeleton and filter core, generation stiction is F1；
The draining runner switching mechanism includes the cavity 5 set on 4 bottom of skeleton and the bridgeware 6 outside cavity 5,
First passage mouth 5b and second channel mouth 5c is set on cavity 5, and the bridgeware 6 can rotate to play on or off relative to cavity 5
Second channel mouth 5c is closed, frictional force when bridgeware 6 rotates between cavity 5 is F2, the F1 ＞ F2；
The bridgeware 6 is located at second channel mouth 5c with lower part and the direct or indirect rotary seal of 1 inner wall of filter flask.Rotary seal
Refer to be rotatablely connected therebetween and seal simultaneously, water will not penetrate rotation connection contact surface.
The present invention is reasonable in design, easy to process, can easily switch draining runner, to realize positive flushing and recoil
The efficient switching washed, and then realize the efficient cleaning of filter mechanism.Its specific working mode is as follows：When bridgeware 6 closes second
During the 5c of passway, be backwash mode, flow via draining runner exit, cavity 5 first passage mouth 5b by 3 row of drainage element
Go out, flow passes through the siphon power generated during draining runner and the impurity of embedded cartridge surface is sucked out, and then exhaust；6 turns of bridgeware
During dynamic opening second channel mouth 5c, flow is expelled directly out via second channel mouth 5c and first passage mouth 5b by drainage element 3, for just
Rinse mode directly rinses out the large granular impurity of filter core inner surface.It is logical to ensure that bridgeware 6 opens or closes second by F1 ＞ F2
Skeleton 4 will not rotate synchronously during the 5c of road junction.
In the present embodiment, the cavity 5 by outwardly protruding the outer mold cavity component 5a of setting and 4 integrated injection molding of skeleton,
The outer mold cavity component 5a is equipped with locating part（It is not drawn into figure）, for controlling the rotational angle of bridgeware 6.Locating part is set,
Under the premise of ensureing that bridgeware 6 opens or closes second channel mouth 5c completely, bridgeware 6 is further rotated, overcomes static friction
Power F1 realizes the rotation of skeleton 4, realizes that skeleton 4 synchronizes the effect for scraping filter core.
Specific to the present embodiment, the outer mold cavity component 5a is equipped with limiting groove, and limit convex is correspondingly provided on bridgeware 6
Item, by the cooperation of limiting groove and limiting raised line, bridgeware 6 is rotated coaxially with outer mold cavity component 5a and is connect.Bridgeware 6 and type
It is circumferential between chamber 5 to rotate, but the axial reliability and stability that cannot be generated displacement, improve the present invention.
In addition, in the present embodiment, the drainage channel includes several siphon part compositions with siphon, the siphon
Part is axially connected in skeleton outer wall（It is not drawn into figure）, supported indirectly by siphon part between 4 side wall of the filter core inner wall and skeleton
It connects.By increasing cleaning item, improve cleaning performance, a kind of more preferably realization method is provided.
In the embodiment of the present embodiment, 1 lower end of filter flask is rotatably connected to operation knob 2, is embedded in operation knob 2
There is transition piece 7, bridgeware 6 is fixedly connected by transition piece 7 with operation knob 2, and drainage element 3 is set on 2 bottom of operation knob, described
Bridgeware 6 passes through transition piece 7 and the indirect rotary seal in 1 bottom of filter flask.
Embodiment 2
Basic structure is with embodiment 1, and the difference lies at least part abuts between the filter core inner wall and 4 side wall of skeleton, produces
Raw stiction F1, the draining runner switching mechanism are included set on a cavity 5 of skeleton bottom and outside cavity 5
Bridgeware 6, first passage mouth 5b and second channel mouth 5c be set on cavity 5 on, the bridgeware 6 can be rotated relative to cavity 5 with
Second channel mouth 5c is opened or closed, frictional force when bridgeware 6 rotates between cavity 5 is F2, the F1 ＞ F2；
The bridgeware 6 is located at second channel mouth 5c with lower part and the indirect rotary seal of 1 inner wall of filter flask.
Embodiment described above is a kind of preferable scheme of the present invention, and not the present invention is made in any form
It limits, also other variants and remodeling under the premise of without departing from the technical solution recorded in claim, institute in the present invention
Cavity 6 is stated to be made of with the clamping of skeleton 4 the outer mold cavity component 6b for outwardly protruding setting.
Claims (10)
1. the positive inner pressed fore filter rinsed with backwashing function of band, including fore filter ontology, the prefilter
Device ontology includes the head with entery and delivery port, the filter flask being connect with head, filter core, the bone in filter core being placed in filter flask
Frame and the drainage element set on filter flask bottom, skeleton are equipped with drainage channel, and skeleton top is connected with the water inlet end of filter core, and feature exists
In：Skeleton bottom is additionally provided with the positive draining runner switching mechanism rinsed and backwash, and it is logical that draining runner switching mechanism is equipped with first
Road junction and second channel mouth, second channel mouth can open or close, when second channel mouth is closed, drain outlet, first
First row water flow passage is formed between passway and drainage element；When second channel mouth is opened, second channel mouth, first passage mouth and row
Second row water flow passage is formed between water part；
It is located at the direct or indirect rotary seal in second channel mouth lower part between the filter flask inner wall and draining runner switching mechanism.
2. band according to claim 1 is just rinsing and the inner pressed fore filter of backwashing function, it is characterised in that：Institute
It states and is at least locally abutted between filter core inner wall and skeleton side wall, generate stiction F1, the draining runner switching mechanism includes
A cavity set on skeleton bottom and the bridgeware outside cavity, first passage mouth and second channel mouth are set on cavity
On, the bridgeware can be rotated relative to cavity to open or close second channel mouth, when bridgeware rotates between cavity
Frictional force is F2, the F1 ＞ F2；
The bridgeware is located at second channel mouth with lower part and the direct or indirect rotary seal of filter flask inner wall.
3. band according to claim 1 is just rinsing and the inner pressed fore filter of backwashing function, it is characterised in that：
The skeleton top and the water inlet end rotary seal of filter core, generation stiction are F1；
The draining runner switching mechanism include set on skeleton bottom a cavity and the bridgeware outside cavity, first
Passway and second channel mouth are set on cavity, and the bridgeware can rotate to open or close second channel relative to cavity
Mouthful, frictional force when bridgeware rotates between cavity is F2, the F1 ＞ F2；
The bridgeware is located at second channel mouth with lower part and the direct or indirect rotary seal of filter flask inner wall.
4. the band according to Claims 2 or 3 is just rinsing and the inner pressed fore filter of backwashing function, feature exist
In：The cavity is made of the outer mold cavity component for outwardly protruding setting with skeleton clamping or integrated injection molding.
5. band according to claim 4 is just rinsing and the inner pressed fore filter of backwashing function, it is characterised in that：Institute
Outer mold cavity component is stated equipped with locating part, for limiting the rotational angle of bridgeware.
6. the band according to Claims 2 or 3 is just rinsing and the inner pressed fore filter of backwashing function, feature exist
In：The outer mold cavity component is equipped with limiting groove, and limiting raised line is correspondingly provided on bridgeware, passes through limiting groove and limiting raised line
Cooperation, bridgeware rotates coaxially with outer mold cavity component and connect.
7. band according to claim 1 is just rinsing and the inner pressed fore filter of backwashing function, it is characterised in that：Institute
It states drainage channel and includes several siphon part compositions with siphon, the siphon part is axially connected in skeleton outer wall.
8. band according to claim 3 is just rinsing and the inner pressed fore filter of backwashing function, it is characterised in that：Institute
It states and is directly abutted between filter core inner wall and skeleton side wall.
9. band according to claim 7 is just rinsing and the inner pressed fore filter of backwashing function, it is characterised in that：Institute
It states and is abutted indirectly by siphon part between filter core inner wall and skeleton side wall.
10. the band according to Claims 2 or 3 is just rinsing and the inner pressed fore filter of backwashing function, feature exist
In：The filter flask lower end is rotatably connected to operation knob, and transition piece is embedded in operation knob, and bridgeware passes through transition piece and behaviour
It is fixedly connected as knob, drainage element is set on operation knob bottom, and the bridgeware is rotated indirectly by transition piece and filter flask bottom
Sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810046893.1A CN108159758A (en) | 2018-01-18 | 2018-01-18 | The positive inner pressed fore filter rinsed with backwashing function of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810046893.1A CN108159758A (en) | 2018-01-18 | 2018-01-18 | The positive inner pressed fore filter rinsed with backwashing function of band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108159758A true CN108159758A (en) | 2018-06-15 |
Family
ID=62514682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810046893.1A Pending CN108159758A (en) | 2018-01-18 | 2018-01-18 | The positive inner pressed fore filter rinsed with backwashing function of band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108159758A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905338A (en) * | 2018-09-10 | 2018-11-30 | 诸暨市来诺环境科技有限公司 | Universal directional multifunctional fore filter |
| CN110404314A (en) * | 2019-07-04 | 2019-11-05 | 海宁市倍世环保科技有限公司 | Fore filter with top control backwashing function |
| CN112452029A (en) * | 2020-11-24 | 2021-03-09 | 陆杰 | Precision filter for chemical production and processing |
| CN113731017A (en) * | 2021-09-10 | 2021-12-03 | 四川金蓝科技有限公司 | Sewage treatment device |
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| CN102824773A (en) * | 2011-06-16 | 2012-12-19 | 海宁市水享净水设备有限公司 | Prefilter |
| CN203620353U (en) * | 2013-12-23 | 2014-06-04 | 张露林 | Forward and backward washing prefilter |
| CN204111443U (en) * | 2014-09-15 | 2015-01-21 | 海宁市倍世环保科技有限公司 | A kind of fore filter |
| US20150196859A1 (en) * | 2014-01-13 | 2015-07-16 | Spiral Water Technologies, Inc. | Flow control features for fluid filtration device and methods |
| CN204910939U (en) * | 2015-07-21 | 2015-12-30 | 海宁市倍世环保科技有限公司 | Take two -sided mill to scrape and leading filter of siphon blowdown |
| CN205182312U (en) * | 2015-11-23 | 2016-04-27 | 海宁市水享净水设备有限公司 | Filter and filter equipment thereof |
| CN106139666A (en) * | 2016-08-03 | 2016-11-23 | 厦门建霖工业有限公司 | Double-layer leaching net fore filter and method of work thereof |
| CN106422463A (en) * | 2016-10-26 | 2017-02-22 | 海宁市倍世环保科技有限公司 | Pre-filter assembly capable of being back washed |
| CN205995101U (en) * | 2016-08-03 | 2017-03-08 | 厦门建霖工业有限公司 | The flushing switching mechanism of double-layer leaching net fore filter |
| CN206168025U (en) * | 2016-10-26 | 2017-05-17 | 海宁市倍世环保科技有限公司 | A moisture cloth mechanism for but, leading filtering component of back flush |
| CN208244205U (en) * | 2018-01-18 | 2018-12-18 | 海宁市倍世环保科技有限公司 | The positive inner pressed fore filter rinsed with backwashing function of band |
-
2018
- 2018-01-18 CN CN201810046893.1A patent/CN108159758A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092805A1 (en) * | 1999-09-20 | 2002-07-18 | Tuomo Koivula | Filtering apparatus |
| CN102824773A (en) * | 2011-06-16 | 2012-12-19 | 海宁市水享净水设备有限公司 | Prefilter |
| CN203620353U (en) * | 2013-12-23 | 2014-06-04 | 张露林 | Forward and backward washing prefilter |
| US20150196859A1 (en) * | 2014-01-13 | 2015-07-16 | Spiral Water Technologies, Inc. | Flow control features for fluid filtration device and methods |
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| CN204910939U (en) * | 2015-07-21 | 2015-12-30 | 海宁市倍世环保科技有限公司 | Take two -sided mill to scrape and leading filter of siphon blowdown |
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| CN205995101U (en) * | 2016-08-03 | 2017-03-08 | 厦门建霖工业有限公司 | The flushing switching mechanism of double-layer leaching net fore filter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905338A (en) * | 2018-09-10 | 2018-11-30 | 诸暨市来诺环境科技有限公司 | Universal directional multifunctional fore filter |
| CN110404314A (en) * | 2019-07-04 | 2019-11-05 | 海宁市倍世环保科技有限公司 | Fore filter with top control backwashing function |
| CN112452029A (en) * | 2020-11-24 | 2021-03-09 | 陆杰 | Precision filter for chemical production and processing |
| CN113731017A (en) * | 2021-09-10 | 2021-12-03 | 四川金蓝科技有限公司 | Sewage treatment device |
| CN113731017B (en) * | 2021-09-10 | 2023-03-14 | 四川金蓝科技有限公司 | Sewage treatment device |
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