CN110215836A - Parallel connection water inlet twin-stage disc-type filter - Google Patents
Parallel connection water inlet twin-stage disc-type filter Download PDFInfo
- Publication number
- CN110215836A CN110215836A CN201910473711.3A CN201910473711A CN110215836A CN 110215836 A CN110215836 A CN 110215836A CN 201910473711 A CN201910473711 A CN 201910473711A CN 110215836 A CN110215836 A CN 110215836A
- Authority
- CN
- China
- Prior art keywords
- water
- filter
- filter core
- flow guiding
- water proof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
Abstract
The present invention relates to a kind of water inlet twin-stage disc-type filters in parallel, belong to water-treatment technology field.Including filter case and filter core upper body, level-one filter core and second level filter core are equipped with inside the filter case from bottom to top, the level-one filter core and second level filter core include flow guiding disc group, the both ends of the flow guiding disc group are equipped with barrier disk, and the flow guiding disc group is by the flow guiding disc being stacked and the filter membrane being mounted in water conservancy diversion dish gap；The filter core upper body and the center of filter case are equipped with hollow pipe, and the lower end of the hollow pipe offers at least one through-hole first, offer outlet of sewer and water purification outlet inside the filter core upper body from the outside to the core, and the hollow part of the hollow pipe is original water inlet.The beneficial effects of the present invention are: raw water flows through ultrafiltration membrane, it is not necessarily to biggish hydraulic pressure, reduces energy consumption, high-efficient, secondary filter is passed through in water purification, and purity is higher, and water purification is permeated up layer by layer due to the reason of lasting water inlet during the filtration process, improves effluent characteristics.
Description
Technical field
The present invention relates to a kind of water inlet twin-stage disc-type filters in parallel, belong to water-treatment technology field.
Background technique
The mode of water process includes physical treatment and chemical treatment.The mode that the mankind carry out water process has had to be gone through for many years
History, chemical method are then to be converted impurities in water to the lesser substance of human injury using various chemicals, or will be miscellaneous
Matter is concentrated, and the chemical treatment method of history at most should can be added to the water with alum at last, and after impurities in water set, volume becomes
Greatly, filtration method can be used, impurity is removed.The physical method filter material different including the use of various pore sizes, using absorption or
Barrier mode forecloses the impurity in water, and more important person is to be adsorbed with active carbon in suction type, and blocking method is then
It is by filter material the biggish impurity of volume can not be passed through in water, and then obtain more clean water.It is traditional using filter material into
Row filtering is all that water flow is directly over filter core and is permeated to obtain water purification, generally requires biggish hydraulic pressure, and the rate of filtration is slow, is imitated
Rate is low, and filtering is that water directly enters from top from downside outflow, can only be filtered once by a filter core, lead to water purification purity
It is low.
Summary of the invention
The present invention in view of the above-mentioned deficiencies in the prior art, provides a kind of water inlet twin-stage disc-type filter in parallel.
The technical scheme to solve the above technical problems is that
A kind of water inlet twin-stage disc-type filter in parallel, including filter case and is located on the filter core of filter case upper end
Body is equipped with level-one filter core and second level filter core inside the filter case from bottom to top, and the level-one filter core and second level filter core wrap
Include flow guiding disc group, the both ends of the flow guiding disc group are equipped with barrier disk, and the flow guiding disc group is by the flow guiding disc and peace that are stacked
Filter membrane composition in water conservancy diversion dish gap；The filter core upper body and the center of filter case are equipped with hollow pipe, the hollow pipe
Lower end offer at least one through-hole first, offer outlet of sewer and water purification outlet from the outside to the core inside the filter core upper body,
The hollow part of the hollow pipe is original water inlet.
Preferably, the flow guiding disc is equipped with limber, and convex platform is respectively equipped on the outer edge of upper and lower surface under
Boss, the limber run through convex platform, flow guiding disc and lower convex platform；The raw water through flow guiding disc is offered on the convex platform
Hole offers the mudhole through flow guiding disc on lower convex platform；The raw water hole, mudhole and limber centerlines phase
Together.
Preferably, the bottom and top of the level-one filter core are respectively equipped with barrier Pan Jia and barrier disk second, the second level filter
The bottom and top of core are respectively equipped with barrier disk third and barrier disk fourth；The barrier Pan Jia, it obstructs disk second and obstructs the interior of disk fourth
It is equipped with pure water hole and limber at edge, is equipped with sealing land at the inner edge of the barrier disk third.
Preferably, the edge of the barrier disk first upper and lower surface is respectively equipped with water proof Tai Jia and lower water proof platform first, institute
It states and is offered in water proof platform first at least one raw water hole of barrier Pan Jia, the corresponding lower water proof platform first in the raw water hole
Equipped with the U-lag being open to the center of circle.
Preferably, the edge of the barrier disk second upper and lower surface is respectively equipped with water proof platform second and lower water proof platform second, institute
It states and offers opening in water proof platform second to the U-lag in the center of circle and through at least two sewage of barrier disk second, lower water proof platform second
Hole.
Preferably, the edge of barrier third upper and lower surface of disk is respectively equipped with water proof platform third and lower water proof platform third, institute
It states and offers opening on water proof platform third to the U-lag in the center of circle and through at least two limbers of barrier disk third, on described
The lower water proof platform third of the U-lag corresponding position of water proof platform third is equipped with pure water hole.
Preferably, the edge of the barrier disk fourth upper and lower surface is respectively equipped with water proof platform fourth and lower water proof platform fourth, institute
Lower water proof platform fourth is stated equipped with mudhole and limber, the upper water proof platform fourth and mudhole and limber corresponding position are equipped with opening
To the U-lag in the center of circle.
Preferably, the two sides of the through-hole first are equipped with raw water chamber.
Compared with prior art, the beneficial effects of the present invention are: raw water flows through filter membrane, it is not necessarily to biggish hydraulic pressure, reduces energy
Consumption, it is high-efficient, water purification pass through secondary filter, purity is higher, and during the filtration process water purification due to lasting water inlet reason, layer by layer
It permeates up, improves effluent characteristics.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is water flow schematic diagram of the present invention.
Fig. 3 is the enlarged drawing of A1 in Fig. 2.
Fig. 4 is the enlarged drawing of A2 in Fig. 2.
Fig. 5 is the enlarged drawing of A3 in Fig. 2.
Fig. 6 is the enlarged drawing of A4 in Fig. 2.
Fig. 7 is the top view for obstructing Pan Jia.
Fig. 8 is the bottom view for obstructing Pan Jia.
Fig. 9 is the top view of flow guiding disc.
Figure 10 is the bottom view of flow guiding disc.
Figure 11 is the top view for obstructing disk fourth.
Figure 12 is the bottom view for obstructing disk fourth.
Figure 13 is the top view for obstructing disk second.
Figure 14 is the bottom view for obstructing disk second.
Figure 15 is the top view for obstructing disk third.
Figure 16 is the bottom view for obstructing disk third.
Figure 17 is work flow diagram.
1, filter case in the figure；2, filter core upper body；3, hollow pipe；4, through-hole first；5, outlet of sewer；6, water purification outlet；
7, original water inlet；8, level-one filter core；9, second level filter core；10, raw water chamber；11, disk second is obstructed；12, Pan Jia is obstructed；13, flow guiding disc；
14, disk fourth is obstructed；17, disk third is obstructed；18, convex platform；19, raw water hole；20, pure water hole；22, mudhole；23, limber；24,
U-lag；28, filter membrane.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of water inlet twin-stage disc-type filter in parallel, including filter core
Shell 1 and the filter core upper body 2 for being located at 1 upper end of filter case are equipped with 8 He of level-one filter core inside the filter case 1 from bottom to top
Second level filter core 9, the level-one filter core 8 and second level filter core 9 include flow guiding disc group, and the both ends of the flow guiding disc group are equipped with barrier
Disk, the flow guiding disc group is by the flow guiding disc 13 being stacked and the filter membrane 28 being mounted in 13 gap of flow guiding disc；On the filter core
The center of body 2 and filter case 1 is equipped with hollow pipe 3, and the lower end of the hollow pipe 3 offers at least one through-hole first 4, the filter
Outlet of sewer 5 and water purification outlet 6 are offered inside core upper body 2 from the outside to the core, the hollow part of the hollow pipe 3 is original water inlet 7.
As shown in Figure 9 and Figure 10, the flow guiding disc 13 is equipped with limber 23, sets respectively on the outer edge of upper and lower surface
There are convex platform 18 and lower convex platform, the limber 23 runs through convex platform 18, flow guiding disc 13 and lower convex platform；It is opened on the convex platform 18
Equipped with the raw water hole 19 for running through flow guiding disc 13, the mudhole 22 through flow guiding disc 13 is offered on lower convex platform；The raw water hole 19,
Mudhole 22 is identical with the centerlines of limber 23.
Preferably, the bottom and top of the level-one filter core 8 are respectively equipped with barrier disk first 12 and obstruct disk second 11, and described two
The bottom and top of grade filter core 9 are respectively equipped with barrier disk the third 17 and barrier disk fourth 14；The barrier disk first 12, barrier 11 and of disk second
It obstructs and is equipped with pure water hole 20 and limber 23 at the inner edge of disk fourth 14, be equipped with sealing ring at the inner edge of the barrier disk the third 17
Platform.
As shown in Figure 7 and Figure 8, it is described barrier 12 upper and lower surface of disk first edge be respectively equipped with water proof Tai Jia and under every
Water platform first offers in the upper water proof platform first through at least one raw water hole 19 of barrier disk first 12, and the raw water hole 19 is right
The lower water proof platform first answered is equipped with U-lag 24 of the opening to the center of circle.
As shown in Figure 13 and Figure 14, the edge of barrier 11 upper and lower surface of disk second is respectively equipped with water proof platform second under
Water proof platform second offers opening in the upper water proof platform second to the U-lag 24 in the center of circle and through barrier disk second 11, lower water proof platform second
At least two limbers 23.
As shown in Figure 15 and Figure 16, the edge of the third 17 upper and lower surface of barrier disk be respectively equipped with water proof platform third and under
Water proof platform third offers opening on the upper water proof platform third to the U-lag 24 in the center of circle and through at least two of barrier disk the third 17
Limber 23 is equipped with pure water hole 20 with the lower water proof platform third of 24 corresponding position of U-lag of the upper water proof platform third.
As is illustrated by figs. 11 and 12, the edge of barrier 14 upper and lower surface of disk fourth is respectively equipped with water proof platform fourth under
Water proof platform fourth, the lower water proof platform fourth are equipped with mudhole 22 and limber 23, the upper water proof platform fourth and mudhole 22 and dirt
23 corresponding position of water hole is equipped with U-lag 24 of the opening to the center of circle.
Preferably, the two sides of the through-hole first 4 are equipped with raw water chamber 10.
As shown in figure 17, working principle:
When installation, the mudhole 22 of level-one filter core 8 is docked with the limber 23 of second level filter core 9.The raw water for needing to filter is logical
It crosses original water inlet 7 to enter in the raw water chamber 10 of 4 two sides of through-hole first, the raw water in raw water chamber 10 enters under the hydraulic pressure of lasting water inlet
The raw water runner of level-one filter core 8, the water in raw water runner are entered inside flow guiding disc 13 by raw water hole 19, are flowed through in flow guiding disc 13
The filter membrane 28 on surface is filtered, and filtered water purification and sewage respectively enter water purification runner and sewage runner, in water purification runner
Water flow into the raw water runner of second level filter core 9, then entered in the flow guiding disc 13 in second level filter core 9 by raw water hole 19, then flowed
Secondary filter 9 is carried out through the filter membrane 28 inside 9 flow guiding disc 13 of second level filter core, the water purification after secondary filter 9 passes through 6 row of water purification outlet
Out, the sewage generated after the sewage after secondary filter and by-pass filtration is mixed to be discharged by outlet of sewer 5.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of water inlet twin-stage disc-type filter in parallel, including filter case (1) and it is located at the filter core of filter case (1) upper end
Upper body (2), it is characterised in that: the filter case (1) is internal to be equipped with level-one filter core (8) and second level filter core (9), institute from bottom to top
Stating level-one filter core (8) and second level filter core (9) includes flow guiding disc group, and the both ends of the flow guiding disc group are equipped with barrier disk, described
Flow guiding disc group is made of the flow guiding disc (13) being stacked and the filter membrane (28) being mounted in flow guiding disc (13) gap.
2. water inlet twin-stage disc-type filter in parallel according to claim 1, it is characterised in that: the filter core upper body (2)
Hollow pipe (3) are equipped with the center of filter case (1), the lower end of the hollow pipe (3) offers at least one through-hole first (4),
Offer outlet of sewer (5) and water purification outlet (6) inside the filter core upper body (2) from the outside to the core, the hollow pipe (3) it is hollow
Portion is original water inlet (7), and the flow guiding disc (13) is equipped with limber (23), is respectively equipped on the outer edge of upper and lower surface
Boss (18) and lower convex platform, the limber (23) is through convex platform (18), flow guiding disc (13) and lower convex platform；The convex platform
(18) it is offered on and offers the mudhole through flow guiding disc (13) on the raw water hole (19) of flow guiding disc (13), lower convex platform
(22)；The raw water hole (19), mudhole (22) are identical with the centerlines of limber (23).
3. water inlet twin-stage disc-type filter in parallel according to claim 2, it is characterised in that: the level-one filter core (8)
Bottom and top be respectively equipped with barrier Pan Jia (12) and barrier disk second (11), the bottom and top of the second level filter core (9) are divided
Disk third (17) and barrier disk fourth (14) She You not obstructed；The barrier Pan Jia (12), barrier disk second (11) and barrier disk fourth (14)
Inner edge at be equipped with pure water hole (20) and limber (23), sealing land is equipped at the inner edge of barrier disk third (17).
4. water inlet twin-stage disc-type filter in parallel according to claim 3, it is characterised in that: the barrier Pan Jia (12)
The edge of upper and lower surface is respectively equipped with water proof Tai Jia and lower water proof platform first, is offered in the upper water proof platform first through barrier
At least one raw water hole (19) of Pan Jia (12), the corresponding lower water proof platform first of the raw water hole (19) are equipped with opening to the center of circle
U-lag (24).
5. water inlet twin-stage disc-type filter in parallel according to claim 3, it is characterised in that: the barrier disk second (11)
The edge of upper and lower surface is respectively equipped with water proof platform second and lower water proof platform second, and opening is offered in the upper water proof platform second to circle
The U-lag (24) of the heart and at least two limbers (23) for running through barrier disk second (11), lower water proof platform second.
6. water inlet twin-stage disc-type filter in parallel according to claim 3, it is characterised in that: third (17) of the barrier disk
The edge of upper and lower surface is respectively equipped with water proof platform third and lower water proof platform third, and opening is offered on the upper water proof platform third to circle
The U-lag (24) of the heart and at least two limbers (23) for running through barrier disk third (17), the U-lag with the upper water proof platform third
(24) the lower water proof platform third of corresponding position is equipped with pure water hole (20).
7. water inlet twin-stage disc-type filter in parallel according to claim 3, it is characterised in that: the barrier disk fourth (14)
The edge of upper and lower surface is respectively equipped with water proof platform fourth and lower water proof platform fourth, and the lower water proof platform fourth is equipped with mudhole (22)
With limber (23), the upper water proof platform fourth and mudhole (22) and limber (23) corresponding position are equipped with U-shaped of the opening to the center of circle
Slot (24).
8. water inlet twin-stage disc-type filter in parallel according to claim 3, it is characterised in that: the through-hole first (4)
Two sides are equipped with raw water chamber (10).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910473711.3A CN110215836A (en) | 2019-06-01 | 2019-06-01 | Parallel connection water inlet twin-stage disc-type filter |
| PCT/CN2020/092431 WO2020244431A1 (en) | 2019-06-01 | 2020-05-26 | Parallel water intake two-stage disc filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910473711.3A CN110215836A (en) | 2019-06-01 | 2019-06-01 | Parallel connection water inlet twin-stage disc-type filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110215836A true CN110215836A (en) | 2019-09-10 |
Family
ID=67819350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910473711.3A Withdrawn CN110215836A (en) | 2019-06-01 | 2019-06-01 | Parallel connection water inlet twin-stage disc-type filter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110215836A (en) |
| WO (1) | WO2020244431A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110812943A (en) * | 2019-11-06 | 2020-02-21 | 深圳安吉尔饮水产业集团有限公司 | Filtering structure, pre-filter and filtering method |
| WO2020244429A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Industrial in-parallel water inlet two-stage disc filter |
| WO2020244431A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Parallel water intake two-stage disc filter |
| WO2020244428A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Industrial parallel water inlet single-stage disc water filter |
| WO2020244430A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Parallel-connection water inlet single-stage disc-type water purifier |
| WO2020244426A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Industrial single-stage disc filter having parallel water feeding configuration |
| WO2020244427A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Parallel water-inlet single-stage disk filter |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204412075U (en) * | 2014-12-23 | 2015-06-24 | 浙江美易膜科技有限公司 | A kind of low resistance film pile component |
| CN104524974B (en) * | 2014-12-23 | 2016-08-24 | 浙江美易膜科技有限公司 | A kind of high pressure resistant separating and filtering film column device with low-resistance flow guiding disc |
| CN206951005U (en) * | 2017-07-17 | 2018-02-02 | 烟台金正环保科技有限公司 | A kind of novel guide disk for dish tubular membrane post |
| EP3437724A1 (en) * | 2017-08-01 | 2019-02-06 | R.T.S. ROCHEM Technical Services GmbH | Device for filtering and separating flow media |
| CN110215832A (en) * | 2019-06-01 | 2019-09-10 | 龙口市海丰环境科技工程有限公司 | Industrial water inlet single-stage disc-type filter in parallel |
| CN110215834A (en) * | 2019-06-01 | 2019-09-10 | 龙口市海丰环境科技工程有限公司 | Parallel connection water inlet single-stage disc-type filter |
| CN110215839A (en) * | 2019-06-01 | 2019-09-10 | 龙口市海丰环境科技工程有限公司 | Industrial water inlet twin-stage disc-type filter in parallel |
| CN110215838A (en) * | 2019-06-01 | 2019-09-10 | 龙口市海丰环境科技工程有限公司 | Industrial water inlet level Four disc-type filter in parallel |
| CN110523280A (en) * | 2019-06-01 | 2019-12-03 | 龙口市海丰环境科技工程有限公司 | Industrial water inlet three-level disc-type filter in parallel |
| CN110215837A (en) * | 2019-06-01 | 2019-09-10 | 龙口市海丰环境科技工程有限公司 | Parallel connection water inlet three-level disc-type filter |
| CN110215835A (en) * | 2019-06-01 | 2019-09-10 | 龙口市海丰环境科技工程有限公司 | Parallel connection water inlet level Four disc-type filter |
| CN110548399A (en) * | 2019-06-01 | 2019-12-10 | 龙口市海丰环境科技工程有限公司 | Parallel water inlet single-stage disc type water purifier |
| CN110215833A (en) * | 2019-06-01 | 2019-09-10 | 龙口市海丰环境科技工程有限公司 | The filter disc of disc-type filter |
| CN110215836A (en) * | 2019-06-01 | 2019-09-10 | 龙口市海丰环境科技工程有限公司 | Parallel connection water inlet twin-stage disc-type filter |
| CN110228835A (en) * | 2019-06-01 | 2019-09-13 | 龙口市海丰环境科技工程有限公司 | Industrial water inlet single-stage disc-type water purifier in parallel |
-
2019
- 2019-06-01 CN CN201910473711.3A patent/CN110215836A/en not_active Withdrawn
-
2020
- 2020-05-26 WO PCT/CN2020/092431 patent/WO2020244431A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020244429A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Industrial in-parallel water inlet two-stage disc filter |
| WO2020244431A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Parallel water intake two-stage disc filter |
| WO2020244428A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Industrial parallel water inlet single-stage disc water filter |
| WO2020244430A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Parallel-connection water inlet single-stage disc-type water purifier |
| WO2020244426A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Industrial single-stage disc filter having parallel water feeding configuration |
| WO2020244427A1 (en) * | 2019-06-01 | 2020-12-10 | 栾松 | Parallel water-inlet single-stage disk filter |
| CN110812943A (en) * | 2019-11-06 | 2020-02-21 | 深圳安吉尔饮水产业集团有限公司 | Filtering structure, pre-filter and filtering method |
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| Publication number | Publication date |
|---|---|
| WO2020244431A1 (en) | 2020-12-10 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200219 Address after: No. 1022, baoluan village, Beima Town, Longkou City, Yantai City, Shandong Province Applicant after: Luan Song Address before: 265718 Huangcheng Vegetable Garden Po Village, Longkou City, Yantai City, Shandong Province Applicant before: Longkou Haifeng Environment Technology Engineering Co.,Ltd. |
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| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210913 Address after: 265718 Shandong Yantai Longkou Dongjiang sub district office Qijia village beilongkou Chengfeng Zhiyuan Technology Co.,Ltd. Applicant after: Longkou Haicheng pump valve Co.,Ltd. Address before: 265700 No.1022 boluan village, Beima Town, Longkou City, Yantai City, Shandong Province Applicant before: Luan Song |
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| TA01 | Transfer of patent application right | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190910 |
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| WW01 | Invention patent application withdrawn after publication |