CN208641949U - A kind of novel precision filter - Google Patents
A kind of novel precision filter Download PDFInfo
- Publication number
- CN208641949U CN208641949U CN201820983894.4U CN201820983894U CN208641949U CN 208641949 U CN208641949 U CN 208641949U CN 201820983894 U CN201820983894 U CN 201820983894U CN 208641949 U CN208641949 U CN 208641949U
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- Prior art keywords
- filter
- connecting plate
- filtering body
- detergent line
- chamber
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Abstract
The utility model discloses a kind of novel precision filters, belong to art of filters, including filter cylinder, upper end cover, conical head, filter device, inlet pipe, detergent line, the first connecting plate, the second connecting plate；Filter device includes filtering body, tapered shunting plug, filter core connector；The reduction stepped along water inlet circulating direction of the internal diameter of detergent line；Detergent line is equipped with the first valve.A kind of novel precision filter of the utility model, by the way that tapered shunting plug is arranged on filter device, tapered shunting plug plays the role of mitigating resistance, balanced filter core pollutant holding capability；And overall structure is compact, use cost is lower；The reduction stepped along water inlet circulating direction of the internal diameter of the detergent line of cleaning device, realization is consistent to the water distribution of filtering body, and the flushing pressure for bearing each filtering body is uniform, guarantees the efficiency of filtering body, reach best flushing effect, while extending filter element life and improving production efficiency.
Description
Technical field
The utility model relates to art of filters, more particularly to a kind of novel precision filter.
Background technique
Currently, accurate filter belongs to common solid-liquid separating equipment, has in industries such as medication chemistry, food and widely answer
With traditional filter can all be faced with the difficulty of slagging tap of filter, although filter is equipped with during bio-pharmaceuticals
Recoil cleaning device, but actual effect is very poor, the main reason is that: filter filter area is considerably beyond recoil fluid pipeline
Sectional area leads to the cleaning of filter top not exclusively, or even most of impurity can not be cleared up, only manually to slag tap, expense of taking a lot of work
When, generate secondary pollution.However traditional cleaning filter is inconvenient, and if do not cleaned to it, impurity easy to form causes
Filter opening blocking, influences machine operation.Influence production efficiency.It is, therefore, desirable to provide effective scheme solves problem above.
Utility model content
In order to overcome the drawbacks of the prior art, a kind of novel precision filter of the utility model, by filter device
Upper setting tapered shunting plug, tapered shunting plug play the role of mitigating resistance, balanced filter core pollutant holding capability；And overall structure ratio
Compacter, use cost is lower；The reduction stepped along water inlet circulating direction of the internal diameter of the detergent line of cleaning device, is realized
Consistent to the water distribution of filtering body, the flushing pressure for bearing each filtering body is uniform, guarantees the efficiency of filtering body, reaches
Best flushing effect, while extending filter element life and improving production efficiency.
For this purpose, the utility model uses following technical scheme
The utility model provides a kind of novel precision filter, be cylindrical filter cylinder including cross sectional shape,
The open-topped upper end cover of the filter cylinder is closed, for sealing and being welded on the filter cylinder bottom opening for covering
Conical head, in the filter cartridge body and be spaced apart multiple filter devices, be connected with the filter device
Inlet pipe, the detergent line for cleaning the filter device, be horizontally set on the filter cartridge intracoelomic cavity upper end side
First connecting plate of wall, horizontally disposed and both ends are welded to connect the second connection in the filter cylinder intracavity bottom side wall
Plate；
The upper end cover is bolted on the filter cylinder；
The outlet tube road for going out liquid is welded in the bottom outer wall of the conical head；
First connecting plate and the filter cylinder internal wall transitions cooperate, and first connecting plate passes through the bolt
It is fixedly connected with the upper end cover；
Second connecting plate is equipped with through-hole, and outlet connection passes through the through-hole；
First connecting plate successively separates the inside of the filter cylinder with second connecting plate from top to bottom
At first chamber, second chamber, third chamber；
The inlet pipe includes feed liquor house steward, is connected below the feed liquor house steward and with the feed liquor house steward
Liquid feeding sub-tube；The liquid feeding sub-tube include it is parallel with one another setting and outlet end be threaded with inlet union the first pipeline,
Second pipeline, third pipeline；
The filter device is located in the second chamber, and the filter device includes having for filtering and during inside is
Empty filtering body, the tapered shunting plug for being bonded in described filtering body one end, be sealing adhesive it is another in the filtering body
The filter core connector at end；
Between the filtering body outer wall and the second chamber inner wall have gap, the tapered shunting plug with it is described
The inlet of inlet union is connected, and the filtering body other end is connect by filter core connector with the outlet connection, institute
It states filtering body inner cavity and is connected by filter core connector with the liquid outlet of outlet connection；
The tapered shunting plugged end is provided with T shape aperture, the shape aperture front end T of the tapered shunting plug and it is described into
The inlet of mouth connector is connected, and the T shape aperture of the tapered shunting plug is connected with the second chamber inner cavity；
The detergent line passes through the one side wall of the filter cylinder and extension is extend into the first chamber, described
The one side of detergent line and the close liquid feeding sub-tube is equipped with multiple water jets, and each water jet is respectively equipped with guiding spray
Pipe, the detergent line are connected by guiding jet pipe with the liquid feeding sub-tube；
The reduction stepped along water inlet circulating direction of the internal diameter of the detergent line；Positioned at the outer of the filter cylinder
Portion and be located at the detergent line be equipped with the first valve.
Optionally, the inner hole section shape of the guiding jet pipe is taper.
Optionally, the top in the feed liquor house steward and positioned at the upper end cover is equipped with the second valve.
Optionally, the filter core connector and the outlet connection be using being threadedly coupled, the outlet connection and described the
Two connecting plate interference connection.
Optionally, the periphery being connected on the outlet connection and with the filter core connector is equipped with the first groove, institute
It states and is equipped with the first sealing ring in the first groove；The periphery being connected on the outlet connection and with second connecting plate is equipped with
Second groove, second groove is interior to be equipped with the second sealing ring.
The utility model has the following beneficial effects:
A kind of novel precision filter of the utility model, by the way that tapered shunting plug, taper are arranged on filter device
Plug is shunted to play the role of mitigating resistance, balanced filter core pollutant holding capability；And overall structure is compact, use cost is lower；Clearly
The reduction stepped along water inlet circulating direction of the internal diameter of the detergent line of cleaning device, realization is consistent to the water distribution of filtering body,
The flushing pressure for bearing each filtering body is uniform, guarantees the efficiency of filtering body, reaches best flushing effect, same to time delay
Long filter element life simultaneously improves production efficiency.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for novel precision filter that specific embodiment of the present invention provides；
Fig. 2 is the structural schematic diagram for the detergent line that specific embodiment of the present invention provides；
Fig. 3 is the attachment structure schematic diagram of the detergent line that specific embodiment of the present invention provides and inlet pipe；
Fig. 4 is the structural schematic diagram for the tapered shunting plug that specific embodiment of the present invention provides；
Fig. 5 is the structural schematic diagram for the guiding jet pipe that specific embodiment of the present invention provides；
Fig. 6 is the structural schematic diagram amplified at the A of specific embodiment of the present invention offer.
In figure:
1, filter cylinder；2, upper end cover；3, conical head；4, filter device；5, inlet pipe；6, detergent line；7,
First connecting plate；8, the second connecting plate；9, bolt；10, inlet union；11, first chamber；12, second chamber；13, third chamber
Room；14, outlet connection；15, it is oriented to jet pipe；16, the first valve；17, the second valve；18, the first sealing ring；19, the second sealing
Circle mouth；20, impurity-discharging pipe；21, third valve；31, outlet tube road；41, filtering body；42, tapered shunting plug；43, filter core connects
Connector；51, feed liquor house steward；52, liquid feeding sub-tube；61, the first ladder pipe；62, the first ladder pipe；63, the first ladder pipe；521,
First pipeline；522, the second line portals；523, third pipeline.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
Shown in Fig. 1-6, a kind of novel precision filter is cylindrical filter cylinder 1, for covering including cross sectional shape
Close the open-topped upper end cover 2 of filter cylinder 1, the conical head for sealing and being welded on 1 bottom opening of filter cylinder
3, in filter cylinder 1 and be spaced apart multiple filter devices 4, be connected with filter device 4 inlet pipe 5, use
In cleaning and filtrating equipment 4 detergent line 6, be horizontally set on the first connecting plate 7, the water of 1 inner cavity upper end side wall of filter cylinder
Flat setting and both ends are welded to connect the second connecting plate 8 in 1 intracavity bottom side wall of filter cylinder；Upper end cover 2 is solid by bolt 9
It is scheduled on filter cylinder 1；The outlet tube road 31 for going out liquid is welded in the bottom outer wall of conical head 3；First connecting plate
7 cooperate with 1 internal wall transitions of filter cylinder, and the first connecting plate 7 is fixedly connected by bolt 9 with upper end cover 2；Bolt 9 is successively worn
The first connecting plate 7, upper end cover 2 are crossed, the first connecting plate 7 made is fixedly connected with upper end cover 2；Second connecting plate 8 is equipped with through-hole,
Outlet connection 14 passes through through-hole；First connecting plate 7 successively divides the inside of filter cylinder 1 with the second connecting plate 8 from top to bottom
It is divided into first chamber 11, second chamber 12, third chamber 13；Inlet pipe 5 includes feed liquor house steward 51, is located under feed liquor house steward 51
Side and the liquid feeding sub-tube 52 being connected with feed liquor house steward 51；Liquid feeding sub-tube 52 includes that the equal screw thread of setting parallel with one another and outlet end connects
It is connected to the first pipeline 521, the second pipeline 522, third pipeline 523 of inlet union 10；Filter device 4 is located at second chamber 12
It is interior, filter device 4 include with for filter and it is internal be hollow filtering body 41, the cone for being bonded in 41 one end of filtering body
Shape shunts plug 42, is sealing adhesive in the filter core connector 43 of 41 other end of filtering body；41 outer wall of filtering body and the second chamber
There is gap, tapered shunting plug 42 is connected with the inlet of inlet union 10, and filtering body 41 is another between 12 inner wall of room
End is connect by filter core connector 43 with outlet connection 14, and 41 inner cavity of filtering body passes through filter core connector 43 and outlet connection
14 liquid outlet is connected；42 end of tapered shunting plug is provided with T shape aperture, the shape aperture front end T of tapered shunting plug 42 with
The inlet of inlet union 10 is connected, and the T shape aperture of tapered shunting plug 42 is connected with 12 inner cavity of second chamber；Cleaning pipe
Road 6 passes through the one side wall of filter cylinder 1 and extension is extend into first chamber 11, detergent line 6 and close liquid feeding sub-tube 52
One side be equipped with multiple water jets, each water jet be respectively equipped with guiding jet pipe 15, detergent line 6 by guiding jet pipe 15 with
Liquid feeding sub-tube 52 is connected；The reduction stepped along water inlet circulating direction of the internal diameter of detergent line 6；Positioned at filter cylinder 1
Outside and be located at detergent line 6 be equipped with the first valve 16.
Above to implement, specifically, during bio-pharmaceuticals, filter device 4 needs to carry out feed liquid and is separated by solid-liquid separation
When, feed liquid enters inlet pipe 5 first, and since 51 part of feed liquor house steward is located in first chamber 11, and feed liquor house steward 51 is upper
Side is through upper end cover 2 and protrusion and upper end cover 2, external feed liquid are entered in self-filtering device 4 by feed liquor house steward 51, closed at this time
The first valve 16 in detergent line 6 is closed, the impurities removal for being located at 8 lower section of the second connecting plate and connecting with the second connecting plate 8 is closed
Third valve 21 on pipe 20, it is ensured that the sealing performance of second chamber 12 simultaneously opens the second valve 17, feed liquid by into
It is shunted after liquid general pipeline 51 after sequentially entering the first pipeline 521, the second pipeline 522 and third pipeline 533 and by guiding spray
Pipe 15 reaches tapered shunting plug 42, certain feed liquor house steward 51 and the first pipeline 521, the second pipeline 522 and third pipeline
533 can be directly connected by four way valve, respectively feed liquor house steward 51 and the first pipeline 521, the second pipeline 522 and
The junction welding of third pipeline 533 and four way valve is equipped with pipeline flange, be welded on four way valve flange and with pipeline method
Orchid is corresponding, be bolted pipeline flange and flange make feed liquor house steward 51 and the first pipeline 521, the second pipeline 522 and
Third pipeline 533 is connected with four way valve to be stably connected with, the small, good seal performance using four way valve fluid resistance.First pipe
Since 42 end of tapered shunting plug is provided with T shape aperture, tapered shunting is stifled for road 521, the second pipeline 522 and third pipeline 533
The first 42 shape aperture front end T is connected with the inlet of inlet union 10, the T shape aperture of tapered shunting plug 42 and the second chamber
12 inner cavity of room is connected；Feed liquid, which enters between 12 inner wall of 41 outer wall of filter element body and second chamber, to be had in gap, and feed liquid exists
It is entered by the outside of filter ontology 41 by filter hole in the inner cavity of filter element body 41 and is filtered and purifies, and impurity particle at this time
By filtration residue in filter element body 41, flowed out in conical head 3 by the feed liquid of filter device 4 by outlet connection 14
And next process is entered by the outflow of outlet tube road 31.Therefore tapered shunting plug 42 plays mitigation resistance, balanced filter core is received
The effect of dirt amount.
When needing to clean filter device 4, there is suction pump in the outside of detergent line 6 first by piping connection,
Start suction pump, and the first valve 16 of synchronous opening, simultaneously closes off the second valve 17；Suction pump will have the cleaning of certain pressure
Water flows into detergent line 6 by being oriented to jet pipe 15 and entering 41 outer wall of filter element body and second through tapered shunting plug 42
Have in gap between 12 inner wall of chamber, after 12 inner cavity of second chamber is full of clean water, under the action of internal pressure, clean water one
Divide in the inner cavity that can enter filter element body 41 by the outside and filter hole of filtering body 41 and is cleaned and purified, clean water
Another part escaped and enter in conical head 3 by opening third valve 21 by impurity-discharging pipe 20, the sewage after cleaning exists
It is flowed out in conical head 3 by outlet connection 14 and the outlet tube road 31 by being welded on 3 bottom of conical head is discharged.Due to clear
The internal diameter edge water inlet circulating direction of pipeline 6 is washed in steps reduction, the detergent line 6 of the present embodiment is set respectively along water inlet direction
It is set to the first ladder pipe 61, the second ladder pipe 62, third ladder pipe 63, the first ladder pipe 61, the second ladder pipe 62, third ladder
Pipe 63 passes sequentially through welded connecting and is interconnected, and no leak is ensured after welding, guarantees the leakproofness of its welding.First ladder pipe
61, guiding jet pipe 15, the internal diameter of detergent line 6 are connected separately at the interconnection of the second ladder pipe 62, third ladder pipe 62
It is in steps reduction along water inlet circulating direction, structure setting is reasonable, it is ensured that clean water guarantees in entire detergent line 6
Water flow pressure it is identical, realize that the flushing pressure born to filtering body 41 is uniform, the cleaning efficiency of guarantee filtering body 41,
Reach best flushing effect, while extending the service life of filter device 4 and improving production efficiency.It should be noted that filter core sheet
Body 41 can be made using polytetrafluoroethylene (PTFE), and filter device 4 includes with the hollow filtering body for filtering
41, it is bonded in the tapered shunting plug 42 of 41 one end of filtering body, is sealing adhesive in the filter core connection of 41 other end of filtering body
First 43；Tapered shunting plug 42 have T shape aperture front end protrude into the through-hole of the first connecting plate 7 and with inlet union 10 into
Liquid mouth is connected, and fits closely simultaneously end face seal, cone using the through-hole of the conical surface of tapered shunting plug 42 and the first connecting plate 7
Shape shunts the big bottom conical surface of 42 diameter of plug and is sealed on the end face of filtering body 41 by way of bonding, it is ensured that feed liquid or
Clean water can only enter 41 outer wall of filter element body and second chamber 12 by the T shape aperture of tapered shunting plug 42
Have in gap between inner wall, realizes and filter using filter element body 41.Make structure simpler tight by the way of bonding
It gathers and sealing effect is good, high porosity and subtleer aperture can be made in 41 ability polytetrafluoroethylene (PTFE) of filtering body, receive dirty energy
Power is strong, and flow is big, and long service life is at low cost, and the corrosion of resistance to strong acid, highly basic and organic solvent, excellent filtering
Performance is higher than stainless steel filtering net and other general fibre woven filter materials, but price is lower.
Optionally, the inner hole section shape for being oriented to jet pipe 15 is taper, is oriented to one of the cone-shaped inner hole internal diameter of jet pipe 15 greatly
Be connected inside end opening and detergent line 6, be oriented to jet pipe 15 cone-shaped inner hole internal diameter it is small it is open at one end respectively with first pipe
It is connected inside road 521, the second pipeline 522 and third pipeline 533, to guarantee to enter the first pipeline under water flow pressure
521, after the second pipeline 522 and third pipeline 533, it is possible to reduce the pressure loss of water flow guarantees 6 water flow stream of detergent line
It moves smooth, and water flow is preferably cleaned after tapered shunting plug 42 to filtering body 41, so that cleaning efficiency
Height cleans more abundant.
Optionally, in feed liquor house steward 51 and be located at upper end cover 2 top be equipped with the second valve 17, when need to feed liquid carry out
When filtering, the second valve 17 in feed liquor house steward 51 is opened, the first valve 16 is closed at this time, so that feed liquid can smoothly enter into filtering
In device 4.
Optionally, filter core connector 43 is used with outlet connection 14 and is threadedly coupled, 8 mistake of outlet connection 14 and the second connecting plate
It is full of connection, convenient for disassembly and assembly, outlet connection 14 and second may be implemented using being threadedly coupled in filter core connector 43 and outlet connection 14
8 interference of connecting plate connection, and the tapered shunting plug 42 on filter device 4 is fixed in the through-hole of the first connecting plate 7, due to
With outlet connection 14 using being threadedly coupled, outlet connection 14 is connect filter core connector 43 with 8 interference of the second connecting plate, passes through first
The connection that connecting plate 7 and the second connecting plate 8 make filter device 4 stable.
Optionally, on the outlet connection 14 and periphery that is connected with filter core connector 43 is equipped with the first groove, and first is recessed
The first sealing ring 18 is equipped in slot；The periphery being connected on outlet connection 14 and with the second connecting plate 8 is equipped with the second groove, the
It is equipped with the second sealing ring 19 in two grooves, is effectively prevent by the first sealing ring 18 of setting and the second sealing ring 19, sealed reliable
Internal leak.
The utility model is described with reference to the preferred embodiments, and those skilled in the art know, is not departing from this reality
In the case where with novel spirit and scope, various changes or equivalence replacement can be carried out to these features and embodiment.This reality
It is not limited to the particular embodiment disclosed with novel, other embodiments fallen into claims hereof all belong to
In the range of the utility model protection.
Claims (5)
1. a kind of novel precision filter, it is characterised in that:
It is cylindrical filter cylinder (1) including cross sectional shape, open-topped for covering the conjunction filter cylinder (1)
End cap (2), is located at the filter at the conical head (3) for sealing and being welded on the filter cylinder (1) bottom opening
In cylinder (1) and the multiple filter devices (4) being spaced apart, the inlet pipe (5), the use that are connected with the filter device (4)
In cleaning the detergent line (6) of the filter device (4), be horizontally set on the filter cylinder (1) inner cavity upper end side wall
First connecting plate (7), horizontally disposed and both ends are welded to connect the second connection in the filter cylinder (1) intracavity bottom side wall
Plate (8)；
The upper end cover (2) is fixed on the filter cylinder (1) by bolt (9)；
The outlet tube road (31) for going out liquid is welded in the bottom outer wall of the conical head (3)；
First connecting plate (7) and the filter cylinder (1) internal wall transitions cooperate, and first connecting plate (7) passes through institute
Bolt (9) is stated to be fixedly connected with the upper end cover (2)；
Second connecting plate (8) is equipped with through-hole, and outlet connection (14) passes through the through-hole；
First connecting plate (7) and second connecting plate (8) by the inside of the filter cylinder (1) from top to bottom successively
It is separated into first chamber (11), second chamber (12), third chamber (13)；
The inlet pipe (5) include feed liquor house steward (51), be located at the feed liquor house steward (51) below and with the feed liquor house steward
(51) liquid feeding sub-tube (52) being connected；The liquid feeding sub-tube (52) includes setting parallel with one another and outlet end is threaded with
The first pipeline (521), the second pipeline (522), the third pipeline (523) of inlet union (10)；
The filter device (4) is located in the second chamber (12), and the filter device (4) includes having for filtering and interior
Portion be hollow filtering body (41), be bonded in the filtering body (41) one end tapered shunting plug (42), be sealing adhesive
In the filter core connector (43) of the filtering body (41) other end；
There is gap, the tapered shunting plug between filtering body (41) outer wall and the second chamber (12) inner wall
(42) it is connected with the inlet of the inlet union (10), filtering body (41) other end passes through filter core connector (43)
It is connect with the outlet connection (14), filtering body (41) inner cavity passes through filter core connector (43) and outlet connection (14)
Liquid outlet is connected；
Tapered shunting plug (42) end is provided with T shape aperture, the shape aperture front end T of the tapered shunting plug (42) and institute
The inlet for stating inlet union (10) is connected, the T shape aperture of the tapered shunting plug (42) and the second chamber (12)
Inner cavity is connected；
The detergent line (6) passes through the one side wall of the filter cylinder (1) and extension extend into the first chamber (11)
Interior, the one side of the detergent line (6) and close the liquid feeding sub-tube (52) is equipped with multiple water jets, each water jet
It is respectively equipped with guiding jet pipe (15), the detergent line (6) is connected by being oriented to jet pipe (15) with the liquid feeding sub-tube (52)；
The reduction stepped along water inlet circulating direction of the internal diameter of the detergent line (6)；Positioned at the filter cylinder (1)
It is external and be located at the detergent line (6) and be equipped with the first valve (16).
2. a kind of novel precision filter as described in claim 1, it is characterised in that:
The inner hole section shape of guiding jet pipe (15) is taper.
3. a kind of novel precision filter as described in claim 1, it is characterised in that:
On the feed liquor house steward (51) and it is located at the top of the upper end cover (2) equipped with the second valve (17).
4. a kind of novel precision filter as described in claim 1, it is characterised in that:
The filter core connector (43) and the outlet connection (14) are using being threadedly coupled, the outlet connection (14) and described the
Two connecting plates (8) interference connection.
5. a kind of novel precision filter as described in claim 1, it is characterised in that:
The periphery being connected on the outlet connection (14) and with the filter core connector (43) is equipped with the first groove, and described the
The first sealing ring (18) are equipped in one groove；What is be connected on the outlet connection (14) and with second connecting plate (8) is outer
It is equipped with the second groove week, is equipped with the second sealing ring (19) in second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820983894.4U CN208641949U (en) | 2018-06-25 | 2018-06-25 | A kind of novel precision filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820983894.4U CN208641949U (en) | 2018-06-25 | 2018-06-25 | A kind of novel precision filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208641949U true CN208641949U (en) | 2019-03-26 |
Family
ID=65781535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820983894.4U Expired - Fee Related CN208641949U (en) | 2018-06-25 | 2018-06-25 | A kind of novel precision filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208641949U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110393966A (en) * | 2019-08-22 | 2019-11-01 | 湖北襄化机械设备有限公司 | A kind of filter |
| CN111921237A (en) * | 2020-08-03 | 2020-11-13 | 内蒙古圣清科技有限公司 | Precision filter |
| CN112194285A (en) * | 2020-10-02 | 2021-01-08 | 北京怡盛原环保科技有限公司 | Novel filter element assembly and water purification equipment thereof |
| CN114405388A (en) * | 2022-01-07 | 2022-04-29 | 北新建材(天津)有限公司 | Gypsum board water reducing agent adds device on line |
-
2018
- 2018-06-25 CN CN201820983894.4U patent/CN208641949U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110393966A (en) * | 2019-08-22 | 2019-11-01 | 湖北襄化机械设备有限公司 | A kind of filter |
| CN110393966B (en) * | 2019-08-22 | 2024-04-05 | 湖北襄化机械设备有限公司 | Filter |
| CN111921237A (en) * | 2020-08-03 | 2020-11-13 | 内蒙古圣清科技有限公司 | Precision filter |
| CN112194285A (en) * | 2020-10-02 | 2021-01-08 | 北京怡盛原环保科技有限公司 | Novel filter element assembly and water purification equipment thereof |
| CN112194285B (en) * | 2020-10-02 | 2021-08-24 | 山东一水环保科技有限公司 | Filter element assembly and water purification equipment thereof |
| CN114405388A (en) * | 2022-01-07 | 2022-04-29 | 北新建材(天津)有限公司 | Gypsum board water reducing agent adds device on line |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190326 Termination date: 20200625 |