CN109794092A - A kind of well strainer that can quickly backwash - Google Patents
A kind of well strainer that can quickly backwash Download PDFInfo
- Publication number
- CN109794092A CN109794092A CN201910238772.1A CN201910238772A CN109794092A CN 109794092 A CN109794092 A CN 109794092A CN 201910238772 A CN201910238772 A CN 201910238772A CN 109794092 A CN109794092 A CN 109794092A
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- Prior art keywords
- backwash
- water inlet
- pipe
- filtering
- central siphon
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 133
- 238000001914 filtration Methods 0.000 claims abstract description 98
- 239000000706 filtrate Substances 0.000 claims abstract description 16
- 230000007306 turnover Effects 0.000 claims abstract description 4
- 238000011010 flushing procedure Methods 0.000 claims description 11
- 239000010865 sewage Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000011001 backwashing Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 4
- 230000003447 ipsilateral effect Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229940023495 irrigation product Drugs 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The present invention provides the well strainers that one kind can be backwashed quickly, including water inlet pipe, central siphon, filtrate housing and outlet pipe, main filtration core is equipped in the filtrate housing, the bottom of the filtrate housing is equipped with screen pipe, the filtering pipe sleeve is in the outside of central siphon, the central siphon and screen pipe is rotatablely connected, and the water inlet pipe is separately fixed at the both ends of screen pipe with outlet pipe, and the water inlet pipe is connected with central siphon respectively with outlet pipe；Auxiliary filtration core is equipped in the outlet pipe；The screen pipe is equipped with limiting slot, is equipped with turnover backwash handle in the limiting slot, the bottom of the backwash handle is fixedly connected with the central siphon.The well strainer that one kind of the present invention can be backwashed quickly is rotated by central siphon and realizes that water route switches, and realizes backwash by changing water (flow) direction inside and outside strainer, filter gauze cleaning speed is fast and thorough.
Description
Technical field
The invention belongs to agricultural water-saving irrigation product technical field, the net formula mistake that can be quickly backwashed more particularly, to one kind
Filter.
Background technique
Modern agriculture water-saving irrigation technique has obtained rapid promotion and popularization in recent years, and filter plant is modern water-saving agriculture
The important component part of industry, it is responsible for being filtered iirigation water source processing, removes impurity, end irrigation pipe network is protected not send out
The important equipment of raw blocking, and well strainer is a kind of filter plant relatively conventional at present, be broadly divided into Manual-cleaning and
Automatic two kinds of cleaning.Common automatic cleaning screen filter generally require multiple groups it is in parallel and by special backwash valve body,
Solenoid valve and nonshared control unit etc. are controlled to realize, cost is very high, and controls water route and be easy to happen blocking, reliability
It is not high.And traditional Manual-cleaning well strainer generally requires timing and strainer is removed the manual cleaning of progress, using extremely not
Just.Therefore design it is a kind of conveniently make practical, and the well strainer that can quickly backwash is necessary.
Summary of the invention
In view of this, the present invention is directed to propose a kind of well strainer that can quickly backwash, to realize monomer strainer
Self backwash, it is in parallel without multiple groups, other peripheral hardwares are not necessarily to, cost is low, strong applicability.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of well strainer that can quickly backwash, including water inlet pipe, central siphon, filtrate housing and outlet pipe, it is described
Main filtration core is equipped in filtrate housing, the bottom of the filtrate housing is equipped with screen pipe, and the filtering pipe sleeve is in central siphon
Outside, the central siphon and screen pipe are rotatablely connected, and the water inlet pipe is separately fixed at the both ends of screen pipe, institute with outlet pipe
The water inlet pipe stated is connected with central siphon respectively with outlet pipe；
Auxiliary filtration core is equipped in the outlet pipe, the water inlet end of the auxiliary filtration core is connected with the central siphon,
The water outlet of the auxiliary filter screen is connected with the outlet pipe；
The screen pipe is equipped with limiting slot, and turnover backwash handle is equipped in the limiting slot, described
The bottom of backwash handle is fixedly connected with the central siphon；
The central siphon is equipped with the filter hole unit being connected respectively with the main filtration core and recoil hole flushing unit,
The center line of the filter hole unit and the central axis of recoil hole flushing unit.
Further, the central siphon is closed at one end, and the other end of central siphon is connected with the water inlet pipe.
Further, 3 sealing partitions are equipped in the central siphon, central siphon is divided into backwash row by the sealing partition
Water cavity, backwash intake antrum, filtering drainage cavity and filtered water inlet chamber, the filtered water inlet chamber are connected with the water inlet pipe
Logical, the filtering drainage cavity is located between backwash drainage cavity and filtered water inlet chamber, and the backwash intake antrum is located at anti-
Between flush discharge chamber and filtering drainage cavity.
Further, the top of the screen pipe is equipped with filtered water inlet mouth, filtering water outlet, backwash water inlet and anti-
Water outlet is rinsed, the filtered water inlet mouth, filtering water outlet, backwash water inlet and backwash water outlet are respectively positioned on described
The inside of filtrate housing, the filtered water inlet mouth and backwash water outlet are located at the two sides of the main filtration core, institute
The filtering water outlet and backwash water inlet stated are respectively positioned on the bottom of main filtration core.
Further, the filter hole unit includes filtering apopore and filtered water inlet hole, the filtered water inlet chamber
Be connected by filtering apopore with the filtered water inlet mouth, the filtering drainage cavity pass through filtered water inlet hole with it is described
Filtering water outlet is connected.
Further, filtering aqueduct is additionally provided in the central siphon, the filtering aqueduct is fixed in central siphon, institute
The one end for the filtering aqueduct stated is connected with the filtering drainage cavity, and the other end of filtering aqueduct and the auxiliary mistake
The water inlet end of filter core is connected.
Further, the recoil hole flushing unit includes the first backwash apopore, the first backwash inlet opening, second
It backwashes apopore, the second backwash inlet opening and third and backwashes apopore, the bottom of the screen pipe is equipped with backwash
Aqueduct, one end of the backwash aqueduct is connected with the first backwash apopore, and backwashes the another of aqueduct
End is connected with the first backwash inlet opening, and the filtered water inlet chamber and the backwash intake antrum pass through backwash water guide
Pipe is connected, and the backwash intake antrum is connected by the second backwash apopore with the backwash water inlet, institute
The backwash drainage cavity stated is connected by the second backwash inlet opening with the backwash water outlet, the screen pipe
Bottom is additionally provided with sewage pipe, and the sewage pipe backwashes apopore by third and is connected with backwash drainage cavity.
Further, the backwash handle is equipped with fixing bolt, and the backwash handle passes through fixing bolt
It is fixedly connected with the screen pipe.
Further, the radian of the limiting slot is 90 °.
Compared with the existing technology, the well strainer that one kind of the present invention can be backwashed quickly has the advantage that
(1) well strainer that one kind of the present invention can be backwashed quickly is rotated by central siphon and realizes water route switching,
Backwash is realized by changing water (flow) direction inside and outside strainer, and filter gauze cleaning speed is fast and thorough.
(2) well strainer that one kind of the present invention can be backwashed quickly is, it can be achieved that self recoil of monomer strainer
It washes, it is in parallel without multiple groups, other peripheral hardwares are not necessarily to, cost is low, strong applicability；And it installs, is easy to operate easy to spread.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is cross-sectional view of the filter described in the embodiment of the present invention in filtration condition；
Fig. 2 is the explosive view of filter described in the embodiment of the present invention；
Fig. 3 is the explosive view at another visual angle of filter described in the embodiment of the present invention；
Fig. 4 is the external structure schematic diagram of filter described in the embodiment of the present invention.
Description of symbols:
1, water inlet pipe；2, central siphon；21, partition is sealed；211, drainage cavity is backwashed；212, intake antrum is backwashed；213, mistake
Filter drainage cavity；214, filtered water inlet chamber；22, apopore is filtered；23, filtered water inlet hole；24, the first backwash apopore；25,
One backwash inlet opening；26, the second backwash apopore；27, the second backwash inlet opening；28, third backwashes apopore；
29, aqueduct is filtered；3, filtrate housing；31, screen pipe；311, filtered water inlet mouth；312, water outlet is filtered；313, backwash into
The mouth of a river；314, water outlet is backwashed；315, limiting slot；316, aqueduct is backwashed；317, sewage pipe；32, upper cover；4, it is discharged
Pipe；5, main filtration core；6, auxiliary filtration core；7, handle is backwashed；71, fixing bolt.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figs 1-4, a kind of well strainer that can quickly backwash, including water inlet pipe 1, central siphon 2, filtrate housing 3
With outlet pipe 4, the filtrate housing 3 is interior to be equipped with main filtration core 5, and the bottom of the filtrate housing 3 is equipped with screen pipe 31, institute
Outside of 31 sets of the screen pipe stated in central siphon 2, the central siphon 2 and screen pipe 31 are rotatablely connected, the water inlet pipe 1 and water outlet
Pipe 4 is separately fixed at the both ends of screen pipe 31, and the water inlet pipe 1 is connected with central siphon 2 respectively with outlet pipe 4；The mistake
The top of filter housing body 3 is additionally provided with upper cover 32.
Auxiliary filtration core 6 is equipped in the outlet pipe 4, the water inlet end of the auxiliary filtration core 6 is connected with the central siphon 2
Logical, the water outlet of the auxiliary filter screen is connected with the outlet pipe 4；The main filtration core 5 and the auxiliary filtration core 6
Filtering accuracy grade is identical；The main filtration core 5 is the filter medium under posing, and the auxiliary filtration core 6
It is to be flowed into a small amount of water without main filter screen filtering occurred in operating mode " filtering ", " backwash " stateful switchover process
Row filtering.
The screen pipe 31 is equipped with limiting slot 315, is equipped with turnover backwash handle in the limiting slot 315
7, the bottom of the backwash handle 7 is fixedly connected with the central siphon 2；
The central siphon 2 is equipped with the filter hole unit being connected respectively with the main filtration core 5 and recoil hole flushing list
Member, the center line of the filter hole unit and the central axis of recoil hole flushing unit.
The central siphon 2 it is closed at one end, and the other end of central siphon 2 is connected with the water inlet pipe 1.
3 sealing partitions 21 are equipped in the central siphon 2, central siphon 2 is divided into backwash draining by the sealing partition 21
Chamber 211, backwash intake antrum 212, filtering drainage cavity 213 and filtered water inlet chamber 214, the filtered water inlet chamber 214 with it is described
Water inlet pipe 1 be connected, the filtering drainage cavity 213 be located at backwash drainage cavity 211 and filtered water inlet chamber 214 between, institute
The backwash intake antrum 212 stated is located between backwash drainage cavity 211 and filtering drainage cavity 213.
The top of the screen pipe 31 is equipped with filtered water inlet mouth 311, filtering water outlet 312,313 and of backwash water inlet
Backwash water outlet 314, the filtered water inlet mouth 311, filtering water outlet 312, backwash water inlet 313 and backwash water outlet
Mouth 314 is respectively positioned on the inside of the filtrate housing 3, and the filtered water inlet mouth 311 is located at backwash water outlet 314
The two sides of the main filtration core 5, the filtering water outlet 312 and backwash water inlet 313 are respectively positioned on the bottom of main filtration core 5
Portion.
The filter hole unit includes filtering apopore 22 and filtered water inlet hole 23, and the filtered water inlet chamber 214 is logical
Filtering apopore 22 is connected with the filtered water inlet mouth 311, and the filtering drainage cavity 213 passes through filtered water inlet hole 23
It is connected with the filtering water outlet 312.
Filtering aqueduct 29 is additionally provided in the central siphon 2, the filtering aqueduct 29 is fixed in central siphon 2, described
One end of filtering aqueduct 29 be connected with the filtering drainage cavity 213, and filter the other end of aqueduct 29 with it is described
The water inlet end of auxiliary filtration core 6 be connected.
The recoil hole flushing unit includes that the first backwash apopore 24, first backwashes the recoil of inlet opening 25, second
It washes out water hole 26, second and backwashes inlet opening 27 and third backwash apopore 28, the bottom of the screen pipe 31 is equipped with anti-
Aqueduct 316 is rinsed, one end of the backwash aqueduct 316 is connected with the first backwash apopore 24, and backwashes
The other end of aqueduct 316 is connected with the first backwash inlet opening 25, the filtered water inlet chamber 214 and the backwash
Intake antrum 212 is connected by backwashing aqueduct 316, and the backwash intake antrum 212 passes through the second backwash apopore
26 are connected with the backwash water inlet 313, the backwash drainage cavity 211 by second backwash inlet opening 27 with
The backwash water outlet 314 is connected, and the bottom of the screen pipe 31 is additionally provided with sewage pipe 317, the sewage pipe
317 backwash apopore 28 by third is connected with backwash drainage cavity 211.
The filtering apopore 22, first backwashes apopore 24 and is connected with the filtered water inlet chamber 214, and
Filtering between apopore 22 and the second backwash apopore 26 is mutually in 90 °；The filtered water inlet hole 23 and the filtering are arranged
Water cavity 213 is connected, and the filtered water inlet hole 23 and filtering apopore 22 are located at ipsilateral and the two the center line of central siphon 2
In parallel；The first backwash inlet opening 25 and the second backwash apopore 26 is located at the two sides of central siphon 2, and first is anti-
Inlet opening 25 is rinsed to be connected with the backwash intake antrum 212 with the second backwash apopore 26；Described second is anti-
It rinses inlet opening 27 and third backwash apopore 28 is located at the two sides of central siphon 2, and the second backwash inlet opening 27 and the
Three backwash apopores 28 are connected with the backwash drainage cavity 211.The first backwash apopore 24, first
Backwash inlet opening 25, third backwash apopore 28 are located at the ipsilateral of central siphon 2, and the centerline parallel of three；Described
Two backwash apopores 26, second backwash inlet opening 27 and are located at the ipsilateral of central siphon 2, and the centerline parallel of the two.
The backwash handle 7 is equipped with fixing bolt 71, and the backwash handle 7 passes through fixing bolt 71 and institute
The screen pipe 31 stated is fixedly connected.
The radian of the limiting slot 315 is 90 °.The limiting slot 315 is provided on the cylindrical surface of the screen pipe 31,
Blowing angle is 90 °.The backwash handle 7 is able to drive the central siphon 2 in the limiting slot under external force
315 limit the lower rotation for carrying out 0-90 ° of range.It is rotated by central siphon 2 and realizes water route switching, by changing water flow side inside and outside strainer
It is backwashed to realizing, filter gauze cleaning speed is fast and thorough.
The backwash handle 7 is " filtering " state at 0 ° of (vertical) position, and pressure flow is by the water inlet at this time
Pipe 1 flows into filtered water inlet chamber 214, then enters the main filtration core 5 by the filtering apopore 22, filtered water inlet mouth 311
Outside enters filtering after flowing through the filtering water outlet 312, filtered water inlet hole 23 after filtering by main 5 inside of filtration core
Drainage cavity 213, then flowed out into the auxiliary filtration core 6 by the filtering aqueduct 29, it is finally flowed out and is completed by outlet pipe 4
Filtering.
The backwash handle 7 is " backwash " state at 90 ° of (level) positions, and water flow is by the water inlet pipe at this time
1 flow into after enter filtered water inlet chamber 214, then by first backwash apopore 24, backwash aqueduct 316, first backwash into
Water hole 25 enters backwash intake antrum 212, and then water flow enters by the second backwash apopore 26, backwash water inlet 313
On the inside of main filtration core 5 and by flowing to outside on the inside of the main filtration core 5, is formed and rinse sewage, then flushing sewage is by recoil
It washes out the mouth of a river 314, second and backwashes inlet opening 27 into backwash drainage cavity 211, finally flushing sewage is recoiled by third and washed out
Water hole 28 enters sewage pipe 317 and is discharged, this process can be by 5 outside of siltation and the main filtration core under " filtering " working condition
Impurity is discharged with water flow together.
It is equipped with sealing ring or gasket at the docking of each connector and Kong Yukong of the well strainer, into
And prevent leak.
The well strainer is, it can be achieved that self backwash of monomer strainer, in parallel without multiple groups, without other outer
If cost is low, strong applicability；And it installs, is easy to operate easy to spread.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. the well strainer that one kind can be backwashed quickly, it is characterised in that: including water inlet pipe, central siphon, filtrate housing and water outlet
Pipe, the filtrate housing is interior to be equipped with main filtration core, and the bottom of the filtrate housing is equipped with screen pipe, the filtering pipe sleeve
In the outside of central siphon, the central siphon and screen pipe are rotatablely connected, and the water inlet pipe and outlet pipe are separately fixed at screen pipe
Both ends, the water inlet pipe is connected with central siphon respectively with outlet pipe；
Auxiliary filtration core is equipped in the outlet pipe, the water inlet end of the auxiliary filtration core is connected with the central siphon, described
The water outlet of auxiliary filter screen be connected with the outlet pipe；
The screen pipe is equipped with limiting slot, is equipped with turnover backwash handle, the recoil in the limiting slot
The wash one's hands bottom of handle is fixedly connected with the central siphon；
The central siphon is equipped with the filter hole unit being connected respectively with the main filtration core and recoil hole flushing unit, described
Filter hole unit center line and recoil hole flushing unit central axis.
2. the well strainer according to claim 1 that can quickly backwash, it is characterised in that: one end of the central siphon
Closing, and the other end of central siphon is connected with the water inlet pipe.
3. the well strainer according to claim 2 that can quickly backwash, it is characterised in that: be equipped in the central siphon
Central siphon is divided into backwash drainage cavity, backwash intake antrum, filtering drainage cavity and mistake by 3 sealing partitions, the sealing partition
Filter influent chamber, the filtered water inlet chamber are connected with the water inlet pipe, and the filtering drainage cavity is located at backwash draining
Between chamber and filtered water inlet chamber, the backwash intake antrum is located between backwash drainage cavity and filtering drainage cavity.
4. the well strainer according to claim 3 that can quickly backwash, it is characterised in that: the top of the screen pipe
Portion is equipped with filtered water inlet mouth, filtering water outlet, backwash water inlet and backwash water outlet, the filtered water inlet mouth, filtering
Water outlet, backwash water inlet and backwash water outlet are respectively positioned on the inside of the filtrate housing, the filtered water inlet mouth
The two sides of the main filtration core, the filtering water outlet and the equal position of backwash water inlet are located at backwash water outlet
In the bottom of main filtration core.
5. the well strainer according to claim 4 that can quickly backwash, it is characterised in that: the filter hole unit
Including filtering apopore and filtered water inlet hole, the filtered water inlet chamber passes through filtering apopore and the filtered water inlet mouth phase
Connection, the filtering drainage cavity are connected by filtered water inlet hole with the filtering water outlet.
6. the well strainer according to claim 5 that can quickly backwash, it is characterised in that: also set in the central siphon
There is filtering aqueduct, the filtering aqueduct is fixed in central siphon, one end of the filtering aqueduct and the filtering
Drainage cavity is connected, and the other end for filtering aqueduct is connected with the water inlet end of the auxiliary filtration core.
7. the well strainer according to claim 4 that can quickly backwash, it is characterised in that: the recoil hole flushing list
Member includes the first backwash apopore, the first backwash inlet opening, the second backwash apopore, the second backwash inlet opening and the
Three backwash apopores, the bottom of the screen pipe are equipped with backwash aqueduct, one end of the backwash aqueduct with
First backwash apopore is connected, and the other end for backwashing aqueduct is connected with the first backwash inlet opening, described
Filtered water inlet chamber and the backwash intake antrum are connected by backwashing aqueduct, and the backwash intake antrum passes through the
Two backwash apopores are connected with the backwash water inlet, and the backwash drainage cavity passes through the second backwash water inlet
Hole is connected with the backwash water outlet, and the bottom of the screen pipe is additionally provided with sewage pipe, and the sewage pipe passes through
Third backwashes apopore and is connected with backwash drainage cavity.
8. the well strainer according to claim 1 that can quickly backwash, it is characterised in that: the backwash handle
It is equipped with fixing bolt, the backwash handle is fixedly connected by fixing bolt with the screen pipe.
9. the well strainer according to claim 1 that can quickly backwash, it is characterised in that: the arc of the limiting slot
Degree is 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910238772.1A CN109794092A (en) | 2019-03-27 | 2019-03-27 | A kind of well strainer that can quickly backwash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910238772.1A CN109794092A (en) | 2019-03-27 | 2019-03-27 | A kind of well strainer that can quickly backwash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109794092A true CN109794092A (en) | 2019-05-24 |
Family
ID=66564184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910238772.1A Pending CN109794092A (en) | 2019-03-27 | 2019-03-27 | A kind of well strainer that can quickly backwash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109794092A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289406A (en) * | 2021-05-21 | 2021-08-24 | 七道水(厦门)健康科技有限公司 | Water filtering structure |
| CN113443729A (en) * | 2021-07-07 | 2021-09-28 | 七道水(厦门)健康科技有限公司 | Water filtering structure and flow direction switching mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2249235Y (en) * | 1996-03-20 | 1997-03-12 | 刘延风 | Water purifying device without changing core |
| JPH11141704A (en) * | 1997-11-04 | 1999-05-28 | Mitsubishi Electric Corp | Five way valve, filtering device provided with five way valve, and bath hot water filtering and circulating device |
| JP2001149924A (en) * | 1999-11-29 | 2001-06-05 | Nakasho:Kk | Water purifier and back-washing mechanism thereof |
| CN2889449Y (en) * | 2006-03-24 | 2007-04-18 | 苏州国能电力设备有限公司 | Self-closed back flush high-temperature high-pressure filtering valve |
| CN202638091U (en) * | 2012-07-04 | 2013-01-02 | 南京国能环保工程有限公司 | Back washing type filter |
| CN210021360U (en) * | 2019-03-27 | 2020-02-07 | 大禹节水（天津）有限公司 | Manual back flush net type filter |
-
2019
- 2019-03-27 CN CN201910238772.1A patent/CN109794092A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2249235Y (en) * | 1996-03-20 | 1997-03-12 | 刘延风 | Water purifying device without changing core |
| JPH11141704A (en) * | 1997-11-04 | 1999-05-28 | Mitsubishi Electric Corp | Five way valve, filtering device provided with five way valve, and bath hot water filtering and circulating device |
| JP2001149924A (en) * | 1999-11-29 | 2001-06-05 | Nakasho:Kk | Water purifier and back-washing mechanism thereof |
| CN2889449Y (en) * | 2006-03-24 | 2007-04-18 | 苏州国能电力设备有限公司 | Self-closed back flush high-temperature high-pressure filtering valve |
| CN202638091U (en) * | 2012-07-04 | 2013-01-02 | 南京国能环保工程有限公司 | Back washing type filter |
| CN210021360U (en) * | 2019-03-27 | 2020-02-07 | 大禹节水（天津）有限公司 | Manual back flush net type filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289406A (en) * | 2021-05-21 | 2021-08-24 | 七道水(厦门)健康科技有限公司 | Water filtering structure |
| CN113443729A (en) * | 2021-07-07 | 2021-09-28 | 七道水(厦门)健康科技有限公司 | Water filtering structure and flow direction switching mechanism |
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Application publication date: 20190524 |