CN208809579U - Multistage filtering film grid and sewage disposal device - Google Patents
Multistage filtering film grid and sewage disposal device Download PDFInfo
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- CN208809579U CN208809579U CN201821383803.XU CN201821383803U CN208809579U CN 208809579 U CN208809579 U CN 208809579U CN 201821383803 U CN201821383803 U CN 201821383803U CN 208809579 U CN208809579 U CN 208809579U
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- sieve
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- coarse filtration
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- grid frame
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Abstract
The utility model relates to a kind of multistage filtering film grid and sewage disposal device, which includes: grid frame, and grid frame is for being installed in sewage treatment channel, and the closing of the open at one end of grid frame, the other end；Coarse filtration diaphragm sieve, coarse filtration diaphragm sieve, which is installed on the periphery wall of grid frame and matches with grid frame, is encircled into filtration channel；And middle filter diaphragm sieve, middle filter diaphragm sieve, which is installed on the periphery wall of grid frame and is spaced, to be enclosed set on the periphery of coarse filtration diaphragm sieve.Under the barrier action of coarse filtration diaphragm sieve, the coarse filtration of the first order can be carried out to large-sized sundries, and then sewage passes through middle filter diaphragm sieve, and the filtering of the second level can be carried out to the sundries of medium size.In this way, the multistage filtering film grid of the technical program can carry out at least double-filtration to the impurity of different sizes in sewage within the unit time, impurity barrier and removal efficiency are promoted, it is ensured that sewage purification filter effect.
Description
Technical field
The utility model relates to technical field of sewage, more particularly to a kind of multistage filtering film grid and sewage treatment
Equipment.
Background technique
MBR (membrane bioreactor) possesses that excellent effluent quality, significantly save land advantage, is to adjust current city land used
Resource anxiety and the national preferred plan increasingly strict to sewage treatment.Film grid is the most pass of pretreatment system in MBR technique
Key section, and film grid sieve is then the core filter element of film grid, is typically used as coarse filtration link, to miscellaneous in sewage
Object carries out blocking filtering.However, can only be within the scope of a certain or certain size in the existing film grid sieve unit time
Sundries carries out blocking filtering, and filtering efficiency is extremely limited, and the dirty water decontamination handles ability is weaker, rear process to sewage treatment and
Equipment requirement is higher.
Utility model content
Based on this, it is necessary to a kind of multistage filtering film grid is provided, it can be within the unit time to sizes different in sewage
The impurity of size carries out at least double-filtration, the barrier and removal efficiency of impurity in lifting sewage, it is ensured that sewage purification filtering effect
Fruit.
Its technical solution is as follows:
On the one hand, the application provides a kind of multistage filtering film grid, comprising:
Grid frame, the grid frame is for being installed in sewage treatment channel, and open at one end, another end seal of the grid frame
It closes；
Coarse filtration diaphragm sieve, the coarse filtration diaphragm sieve are installed on the periphery wall of the grid frame and match with the grid frame
It is encircled into filtration channel；And
Middle filter diaphragm sieve, the middle filter diaphragm sieve, which is installed on the periphery wall of the grid frame and is spaced, to be enclosed set on institute
State the periphery of coarse filtration diaphragm sieve.
Above-mentioned multistage filtering film grid is applied in environment sewage treatment occasion complicated and changeable.When specifically used, first
By coarse filtration diaphragm sieve and middle filter diaphragm sieve, successively socket is installed on grid frame and constitutes an entirety from the inside to the outside, so that
The filtration channel for setting and constituting and flowing through for sewage is enclosed in the intermediate region of grid frame and the coarse filtration diaphragm sieve of inside, can put the entirety
It is placed in the occasions such as sewage treatment channel, and guarantees the open at one end of grid frame towards the direction of water flow, closing one end away from water flow
Direction.In this way, the sewage that upstream comes is flowed into filtration channel by opening, under the barrier action of coarse filtration diaphragm sieve,
The coarse filtration of the first order can be carried out to large-sized sundries, and then sewage passes through middle filter diaphragm sieve, and can be to medium-sized
The sundries of size carries out the filtering of the second level.In this way, the multistage filtering film grid of the technical program can be within the unit time
At least double-filtration is carried out to the impurity of different sizes in sewage, promotes impurity barrier and removal efficiency, it is ensured that sewage is net
Change filter effect.
The technical solution of the application is further described below:
It in one of the embodiments, further include refined filtration diaphragm sieve, the refined filtration diaphragm sieve is installed in the grid frame
It goes up and is spaced and enclose set on the periphery of the middle filter diaphragm sieve.
It in one of the embodiments, further include the first end-plate and the second end-plate, first end-plate is connected to
It is arranged between the coarse filtration diaphragm sieve and the middle filter diaphragm sieve and close to the open end of the grid frame；The second end
Sealing plate is connected to the open end between the middle filter diaphragm sieve and the refined filtration diaphragm sieve and close to the grid frame and is arranged.
It in one of the embodiments, further include the first protection parting bead and the second protection parting bead, the first protection parting bead
Length direction along the grid frame is located between the coarse filtration diaphragm sieve and the middle filter diaphragm sieve, second protection
Parting bead is located between the middle filter diaphragm sieve and the refined filtration diaphragm sieve along the length direction of the grid frame.
The coarse filtration diaphragm sieve includes at least two spaced first mesh, institute in one of the embodiments,
Stating middle filter diaphragm sieve includes at least two spaced second mesh, and the refined filtration diaphragm sieve includes at least two intervals
The third mesh of setting is mutually communicated setting or is staggered between first mesh, second mesh and the third mesh
Setting, and first mesh, second mesh and the third mesh are connected to the filtration channel.
It in one of the embodiments, further include that additional net item and magnetic absorption member, the additional net item are installed in the coarse filtration
On the inner sidewall or lateral wall of diaphragm sieve, the magnetic absorption member be connected to the coarse filtration diaphragm sieve and the additional net item it
Between；
It or further include that additional net item and biological filter membrane, the additional net item are installed in the inner sidewall of the coarse filtration diaphragm sieve
Or on lateral wall, the biological filter membrane is located between the coarse filtration diaphragm sieve and the additional net item；
Or further include additional net item and elastic banding part, the additional net item is installed in the inside of the coarse filtration diaphragm sieve
On wall or lateral wall, the elasticity banding part is sheathed on the outside of the coarse filtration diaphragm sieve or the additional net item.
The additional net item includes fastening screw, net ontology, is set to the net ontology in one of the embodiments,
First connecting plate of one end and be set to the net ontology the other end the second connecting plate, first connecting plate offers
First threaded hole, second connecting plate offer second threaded hole opposite with first threaded hole, the fastening screw
Spiral is connected in first threaded hole and second threaded hole.
The first grab is additionally provided on first connecting plate in one of the embodiments, on second connecting plate
It is additionally provided with the second grab, first grab and the second grab fastener cooperate.
The first stickers, second connecting plate are additionally provided on first connecting plate in one of the embodiments,
On be additionally provided with the second stickers, first stickers are Nian Jie with second stickers.
On the other hand, the application also provides a kind of sewage disposal device comprising multistage filtering film grid as described above.
The sewage disposal device uses above-mentioned multistage filtering film grid by assembly, can carry out at least two to sewage within the unit time
Grade filtration treatment, effectively removes the impurity of different sizes, greatly promotes equipment clean ability, is guaranteeing sewage water filtration effect
While can be with quality, service life be higher with reliability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of multistage filtering film grid described in an embodiment of the present invention；
Fig. 2 is the assembling structure schematic diagram of coarse filtration diaphragm sieve and additional net item described in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of additional net item described in an embodiment of the present invention.
Description of symbols:
100, grid frame, 200, coarse filtration diaphragm sieve, 300, middle filter diaphragm sieve, 400, refined filtration diaphragm sieve, 500, first
End-plate, the 600, second end-plate, 700, additional net item, 710, fastening screw, 720, net ontology, the 730, first connecting plate,
740, the second connecting plate, the 750, first grab, the 760, second grab.
Specific embodiment
It is below in conjunction with attached drawing and specifically real for the purpose of this utility model, technical solution and advantage is more clearly understood
Mode is applied, the utility model is described in further detail.It should be understood that the specific embodiments described herein
Only to explain the utility model, the protection scope of the utility model is not limited.
It should be noted that when element is referred to as " being fixedly arranged on ", " being set to " or " install in " another element, it can be with
Directly on the other element or there may also be elements placed in the middle.When an element is considered as " connection " another yuan
Part, it can be directly to another element or may be simultaneously present centering elements；One element and another element
The concrete mode being fixedly connected can be achieved by the prior art, and details are not described herein, it is preferred to use the fixation side of threaded connection
Formula.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
" first " described in the utility model, " second " do not represent specific quantity and sequence, are only used for title
It distinguishes.
As depicted in figs. 1 and 2, a kind of multistage filtering film grid of the embodiment shown for the application, comprising: grid frame 100,
The grid frame 100 is for being installed in sewage treatment channel, and the closing of the open at one end of the grid frame 100, the other end；Coarse filtration every
Diaphragm screen net 200, the coarse filtration diaphragm sieve 200 are installed on the periphery wall of the grid frame 100 and cooperate with the grid frame 100
Surround filtration channel；And middle filter diaphragm sieve 300, the middle filter diaphragm sieve 300 are installed in the periphery wall of the grid frame 100
It goes up and is spaced and enclose set on the periphery of the coarse filtration diaphragm sieve 200.
Above-mentioned multistage filtering film grid is applied in environment sewage treatment occasion complicated and changeable.When specifically used, first
By coarse filtration diaphragm sieve 200 and middle filter diaphragm sieve 300, successively socket is installed on grid frame 100 and constitutes one from the inside to the outside
It is whole, lead to so that the filtering for setting and constituting and flowing through for sewage is enclosed in the intermediate region of grid frame 100 and the coarse filtration diaphragm sieve 200 of inside
The entirety can be placed in the occasions such as sewage treatment channel by road, and guarantee the open at one end of grid frame 100 towards the side of water flow
To, closing one end deviate from water flow direction.In this way, the sewage that comes of upstream is flowed into filtration channel by opening, coarse filtration every
Under the barrier action of diaphragm screen net 200, the coarse filtration of the first order can be carried out to large-sized sundries, and then sewage passes through middle filter
Diaphragm sieve 300, and the filtering of the second level can be carried out to the sundries of medium size.In this way, the multistage filtering of the technical program
Film grid can carry out at least double-filtration to the impurity of different sizes in sewage within the unit time, promote impurity resistance
Every and removal efficiency, it is ensured that sewage purification filter effect.
Wherein, multistage filtering film grid is cylindrical tube structure.I.e. grid frame 100 is cylinder framework, as coarse filtration diaphragtm screen
The mounting framework of net 200 and middle filter diaphragm sieve 300, serves as the role of carrier.The periphery wall of grid frame 100 has hollowed out area,
The hollowed out area is for accommodating installation coarse filtration diaphragm sieve 200；One end of grid frame 100 has circular open, for making sewage stream
Enter in filtration channel, and the other end is blocked by stainless steel plate, it is therefore an objective to make the sewage entered in filtration channel can only be from
The lateral outflow of coarse filtration diaphragm sieve 200 and middle filter diaphragm sieve 300, to guarantee strainability.The coarse filtration diaphragm sieve
200 and it is middle filter diaphragm sieve 300 can be regarded as by multiple transverse and longitudinals or inclination handover steel wire it is integrally molded molding latticed
Structural member, steel wire is used to stop sundries, play a role in filtering, and grid then allows water to flow through, in order to flow into next filterer
In sequence.Difference is only that the size of grid is different, and according to the different size of grid, can be used for it is thick, in, essence etc. no
In the filtering occasion of same level, to guarantee sewage water filtration effect.
It should be understood that the sizing grid of coarse filtration diaphragm sieve 200 is 8mm~10mm；The grid of middle filter diaphragm sieve 300
Size is 5mm~8mm.It of courses, in other embodiments, the grid of coarse filtration diaphragm sieve 200 and middle filter diaphragm sieve 300 is big
It is small also to need to be designed to other sizes according to application, also all within the scope of protection of this application.
On the basis of the above embodiments, multistage filtering film grid further includes refined filtration diaphragm sieve 400, the refined filtration diaphragm
Sieve 400, which is installed on the grid frame 100 and is spaced, to be enclosed set on the periphery of the middle filter diaphragm sieve 300.In this way, sewage list
Can successively be carried out in the time of position it is thick, in, smart three-stage filtration so that the impurity removal of different sizes is more thorough, sewage
Purification filtering better effect.
And it should be understood that the sizing grid of refined filtration diaphragm sieve 400 is 2mm~5mm.
As can seen above, the multistage filtering film grid in the technical program is the nested structure of three-layer screen, and each other
With certain assembly building away from so that the open at one end for being located at grid frame 100 forms the opening of two ring shapes.The annular opening is deposited
, will lead to a part of sewage have no idea to flow into filtration channel and by it is thick, in, smart three-stage filtration, lead to filter effect
It is bad, namely be understood that sewage can flow directly into coarse filtration diaphragm sieve 200 and it is middle filter diaphragm sieve 300 between gap
In or it is middle filter diaphragm sieve 300 and refined filtration diaphragm sieve 400 between gap in, cause the sundries of certain sizes not done
Method is filtered, and is easy that film grid is made to result in blockage.Based on this problem, please continue to refer to Fig. 2, in an alternative embodiment
In, multistage filtering film grid further includes the first end-plate 500 and the second end-plate 600, and first end-plate 500 is connected to institute
It states between coarse filtration diaphragm sieve 200 and the middle filter diaphragm sieve 300 and is arranged close to the open end of the grid frame 100；It is described
Second end-plate 600 is connected between the middle filter diaphragm sieve 300 and the refined filtration diaphragm sieve 400 and close to the grid
The open end of frame 100 is arranged.In this way, the first end-plate 500 and the second end-plate 600 can prevent sewage enter flow into coarse filtration every
In gap between diaphragm screen net 200 and middle filter diaphragm sieve 300 or middle filter diaphragm sieve 300 and refined filtration diaphragm sieve 400 it
Between gap in, and by sewage choked flow and direct into filtration channel, realize effective filtering of sewage.
In addition, multistage filtering film grid further includes the first protection parting bead (not shown) and in another alternative embodiment
Two protection parting bead (not shown), the first protection parting bead are located in the coarse filtration diaphragm along the length direction of the grid frame 100
Between sieve 200 and the middle filter diaphragm sieve 300, length direction sandwiched of the second protection parting bead along the grid frame 100
Between the middle filter diaphragm sieve 300 and the refined filtration diaphragm sieve 400.Thus the first protection parting bead can be to coarse filtration diaphragm
Sieve 200 is supported and fixed with the formation of middle filter diaphragm sieve 300, and the second protection parting bead simultaneously being capable of centering filter diaphragm sieve 300
It is supported and fixes with refined filtration diaphragm sieve 400, prevent the scouring force of the extruding force and water flow accumulated by sundries and shape occurs
Become and damages.
Further, the coarse filtration diaphragm sieve 200 include at least two spaced first mesh, it is described it is middle filter every
Diaphragm screen net 300 includes at least two spaced second mesh, and the refined filtration diaphragm sieve 400 includes that at least two intervals are set
The third mesh set is mutually communicated setting or is staggered and sets between first mesh, second mesh and the third mesh
It sets, and first mesh, second mesh and the third mesh are connected to the filtration channel.Pass through the first net
The perforation in hole, the second mesh and third mesh is arranged and is connected to filtration channel, can so be more advantageous to flowing through for sewage；Or
It is arranged in a staggered manner between the first mesh of person, the second mesh and third mesh, when ensuring that sewage passes through normal, so that filter effect is more
It is good, the lesser sundries of size can be stopped.
Please continue to refer to Fig. 2 and Fig. 3, in addition, based on any of the above embodiments, multistage filtering film grid further includes
Additional net item 700 and magnetic absorption member, the additional net item 700 are installed in the inner sidewall or lateral wall of the coarse filtration diaphragm sieve 200
On, the magnetic absorption member is connected between the coarse filtration diaphragm sieve 200 and the additional net item 700；Optional magnetic absorption member is bar shaped
The magnet of sheet is absorbed and fixed between the diaphragm sieve of Metal Substrate and additional net item 700, and magnetic attraction can support to a certain extent
The scouring force for the extruding force and water flow of accumulating sundries of disappearing, effectively preventing diaphragm sieve, deformation occurs.
It or further include that additional net item 700 and biological filter membrane, the additional net item 700 are installed in the coarse filtration diaphragm sieve
On 200 inner sidewall or lateral wall, the biological filter membrane is located in the coarse filtration diaphragm sieve 200 and the additional net item 700
Between；Biological filter membrane can realize effectively barrier filtering with the tiny microorganism in sewage, be conducive to lifting sewage clean-up effect.It needs
It is noted that the concrete type and construction of biological filter membrane can be according to the actual needs of those skilled in the art in the prior art
Selection realizes that details are not described herein.
Or further include additional net item 700 and elastic banding part, the additional net item 700 is installed in the coarse filtration diaphragm sieve
On 200 inner sidewall or lateral wall, the elasticity banding part is sheathed on the additional net item of the coarse filtration diaphragm sieve 200 or described
700 outside.Optional elastic banding part is elastic string (band), plastic foil etc., after installation, tightening force can be efficiently converted into prevent every
The diaphragm screen net external constraint power that deformation occurs promotes the structural strength of diaphragm sieve 200, prevents stress from damaging.
Also, by installing additional net item 700 additional on coarse filtration diaphragm sieve 200, coarse filtration diaphragm sieve can be effectively improved
200 structural strength, so that also avoiding occurring to squeeze crack damage when being impacted by more dirt accumulation and flowing water the wet season.
Additional net item 700 in the technical program is made of 316 type stainless steels.The corrosion resistance of 316 type stainless steels is strong,
And contain molybdenum element, the performance corroded with good resisting chlorides；And 316 type stainless steel tensile strength are 515MPa, are bent
Taking intensity is 205MPa, can more bear the impact of sewage when the wet season.It is described in an alternative embodiment please continue to refer to Fig. 3
Additional net item 700 include fastening screw 710, net ontology 720, be set to the net ontology 720 one end the first connecting plate
730 and be set to the net ontology 720 the other end the second connecting plate 740, first connecting plate 730 offers first
Threaded hole, second connecting plate 740 offer second threaded hole opposite with first threaded hole, the fastening screw
710 spirals are connected in first threaded hole and second threaded hole.Thus use fastening screw 710 and two threaded holes
Connection, mounting means is easy to operate, and is convenient for dismantling when later period maintenance, while the structural strength being threadedly coupled is high, will not occur
The problem of additional disconnection of net item 700 falls off.
Please continue to refer to Fig. 3, as the further or alternative embodiments of above-described embodiment, first connecting plate
It is additionally provided with the first grab 750 on 730, the second grab 760, first grab are additionally provided on second connecting plate 740
750 cooperate with 760 fastener of the second grab.It is connect using the first grab 750 with 760 fastener of the second grab, dress connection mode letter
List and intensity height, are assembled and disassembled also more convenient.
As the further or alternative embodiments of above-described embodiment, is additionally provided on first connecting plate 730
One stickers are additionally provided with the second stickers, first stickers and second stickers on second connecting plate 740
Bonding.Specifically, the first stickers it is optional be magic strap public band, correspondingly, it is the master tape of magic strap that the second stickers are optional,
Public band is fixed with master tape adhesion, is also conducive to improve installation exercise efficiency, bonding strength can guarantee, it is ensured that additional net item 700 with
The dress of diaphragm sieve joins firmness.
On the other hand, the application also provides a kind of sewage disposal device comprising multistage filtering film grid as described above.
The sewage disposal device uses above-mentioned multistage filtering film grid by assembly, can carry out at least two to sewage within the unit time
Grade filtration treatment, effectively removes the impurity of different sizes, greatly promotes equipment clean ability, is guaranteeing sewage water filtration effect
While can be with quality, service life be higher with reliability.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of multistage filtering film grid characterized by comprising
Grid frame, the grid frame is for being installed in sewage treatment channel, and the closing of the open at one end of the grid frame, the other end；
Coarse filtration diaphragm sieve, the coarse filtration diaphragm sieve, which is installed on the periphery wall of the grid frame and matches with the grid frame, to surround
At filtration channel；And
Middle filter diaphragm sieve, the middle filter diaphragm sieve, which is installed on the periphery wall of the grid frame and is spaced, to be enclosed set on described thick
Filter the periphery of diaphragm sieve.
2. multistage filtering film grid according to claim 1, which is characterized in that further include refined filtration diaphragm sieve, the essence
Filter diaphragm sieve, which is installed on the grid frame and is spaced, to be enclosed set on the periphery of the middle filter diaphragm sieve.
3. multistage filtering film grid according to claim 2, which is characterized in that further include the first end-plate and the second end seal
Plate, first end-plate are connected between the coarse filtration diaphragm sieve and the middle filter diaphragm sieve and close to the grid frames
Open end setting；Second end-plate is connected between the middle filter diaphragm sieve and the refined filtration diaphragm sieve and leans on
The open end setting of the nearly grid frame.
4. multistage filtering film grid according to claim 1, which is characterized in that further include that the first protection parting bead and second are anti-
Protect parting bead, it is described first protection parting bead along the length direction of the grid frame be located in the coarse filtration diaphragm sieve and it is described it is middle filter every
Between diaphragm screen net, the second protection parting bead is located in the middle filter diaphragm sieve and the essence along the length direction of the grid frame
It filters between diaphragm sieve.
5. multistage filtering film grid according to claim 2, which is characterized in that the coarse filtration diaphragm sieve includes at least two
A spaced first mesh, the middle filter diaphragm sieve include at least two spaced second mesh, the refined filtration
Diaphragm sieve includes at least two spaced third mesh, first mesh, second mesh and the third net
Be mutually communicated between hole setting or be arranged in a staggered manner, and first mesh, second mesh and the third mesh with
The filtration channel connection.
6. multistage filtering film grid according to claim 1, which is characterized in that further include additional net item and magnetic absorption member, institute
Additional net item is stated to be installed on the inner sidewall or lateral wall of the coarse filtration diaphragm sieve, the magnetic absorption member be connected to the coarse filtration every
Between diaphragm screen net and the additional net item；
Or further include additional net item and biological filter membrane, the additional net item is installed in the inner sidewall or outer of the coarse filtration diaphragm sieve
On side wall, the biological filter membrane is located between the coarse filtration diaphragm sieve and the additional net item；
Or further include additional net item and elastic banding part, the additional net item be installed in the coarse filtration diaphragm sieve inner sidewall or
On lateral wall, the elasticity banding part is sheathed on the outside of the coarse filtration diaphragm sieve or the additional net item.
7. multistage filtering film grid according to claim 6, which is characterized in that the additional net item include fastening screw,
Net ontology, be set to the net ontology one end the first connecting plate and be set to the net ontology the other end second connect
Fishplate bar, first connecting plate offer the first threaded hole, and second connecting plate offers opposite with first threaded hole
The second threaded hole, the fastening screw spiral is connected in first threaded hole and second threaded hole.
8. multistage filtering film grid according to claim 7, which is characterized in that be additionally provided on first connecting plate
One grab, the second grab is additionally provided on second connecting plate, and first grab and the second grab fastener cooperate.
9. multistage filtering film grid according to claim 7, which is characterized in that be additionally provided on first connecting plate
One stickers, the second stickers are additionally provided on second connecting plate, and first stickers and second stickers are viscous
It connects.
10. a kind of sewage disposal device, which is characterized in that including the described in any item multistage filterings of such as the claims 1 to 9
Film grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821383803.XU CN208809579U (en) | 2018-08-24 | 2018-08-24 | Multistage filtering film grid and sewage disposal device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821383803.XU CN208809579U (en) | 2018-08-24 | 2018-08-24 | Multistage filtering film grid and sewage disposal device |
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| CN208809579U true CN208809579U (en) | 2019-05-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113599923A (en) * | 2021-08-05 | 2021-11-05 | 深圳嘉信源科技实业有限公司 | Metal dust screen with splicing structure of being convenient for |
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2018
- 2018-08-24 CN CN201821383803.XU patent/CN208809579U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113599923A (en) * | 2021-08-05 | 2021-11-05 | 深圳嘉信源科技实业有限公司 | Metal dust screen with splicing structure of being convenient for |
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