CN108457360A - It is anti-blocking every the industrial floor drain of smelly type - Google Patents
It is anti-blocking every the industrial floor drain of smelly type Download PDFInfo
- Publication number
- CN108457360A CN108457360A CN201810152300.XA CN201810152300A CN108457360A CN 108457360 A CN108457360 A CN 108457360A CN 201810152300 A CN201810152300 A CN 201810152300A CN 108457360 A CN108457360 A CN 108457360A
- Authority
- CN
- China
- Prior art keywords
- lid
- filter screen
- floor drain
- filter chamber
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0407—Floor drains for indoor use
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/041—Accessories therefor
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/26—Installations for stirring-up sewage
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/002—Cleaning sewer pipes by mechanical means
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/007—Devices providing a flushing surge
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of anti-blocking every the industrial floor drain of smelly type comprising cylinder floor drain body；Floor drain body includes filter chamber, head cover and the deodorization chamber * winding paper that is arranged below filter chamber in filter chamber top is arranged, and inwardly protruded protrusion in a ring is equipped between filter chamber and deodorization room；It is equipped in filter chamber and the filtering matched filter screen of chamber shape, self-stripping unit is equipped in filter screen, self-stripping unit includes the agitating shaft being vertically set in filter screen, the top of agitating shaft is connect across head cover with the driver being fixed on above head cover, bottom end extends perpendicularly to the bottom of filter screen, agitating shaft is equipped with several horizontally disposed struts, and the end of strut is equipped with hairbrush；It states and is equipped with a sparge pipe in a ring in the discharge outlet convexed to form between filter chamber and deodorization room；Sparge pipe is connected to a feed pipe, and sparge pipe is fixed on by supporting rack in discharge outlet, and the fountain head that several bottom walls towards filter screen are arranged is distributed on sparge pipe.
Description
Technical field
The present invention relates to a kind of anti-blocking every the industrial floor drain of smelly type.
Background technology
Currently, largely using industrial floor drain in industrial premises, difference lies in industry ground with civilian floor drain for industrial floor drain
Leakage carries out floor drain selection according to industrial equipment displacement, and size and displacement are much larger than civilian floor drain, and in industrial premises
Waste water in impurity it is more and peculiar smell is heavier, traditional floor drain is easy to occur to block during the work time to be often easy to block up
Plug, it is often also bad every smelly effect.
Invention content
It is anti-blocking every the industrial floor drain of smelly type that the object of the present invention is to provide one kind, is easy to block up to solve existing industrial floor drain
Plug, every smelly effect difference and do not have the problem of automatic cleaning function.
In order to solve the above technical problems, the present invention provide it is a kind of anti-blocking every the industrial floor drain of smelly type including cylinder
Floor drain body；The floor drain body includes filter chamber, is arranged in the head cover of the filter chamber top and setting in the filter chamber
The deodorization chamber * winding paper of lower section, and inwardly protruded protrusion in a ring is equipped between the filter chamber and deodorization room；In the filter chamber
Equipped with the matched filter screen of the filtering chamber shape, the open end of the filter screen and the head cover detachable connection,
And the bottom of the filter screen is vertically equipped with several equally distributed spicules；Self-stripping unit, institute are equipped in the filter screen
It includes the agitating shaft being vertically set in the filter screen to state self-stripping unit, the top of the agitating shaft pass through the head cover with
The driver connection being fixed on above head cover, bottom end extend perpendicularly to the bottom of the filter screen, and the agitating shaft is equipped with
The end of several horizontally disposed struts, the strut is equipped with hairbrush；The protrusion stated between filter chamber and deodorization room
A sparge pipe in a ring is equipped in the discharge outlet of formation；The sparge pipe is connected to a feed pipe, and the sparge pipe passes through
Supporting rack is fixed in the discharge outlet, and the spray that several bottom walls towards the filter screen are arranged is distributed on the sparge pipe
Head；Support ring, the deodorization being fixed on by spring in support ring being fixed in the support ring are equipped in the deodorization room
It fills in, the gag lever post that the stink-insulating stopper includes and is set in spring, and the closure being fixed on the gag lever post, the closure
Diameter be more than the aperture in the hole convexed to form between the filter chamber and deodorization room.
Further, the bottom of the filter chamber is equipped with water sensor, and the water sensor is defeated with a controller
Enter end connection, the output end of the controller is connect with the driver.
Further, the agitating shaft is equipped with several magnetic stripes.
Further, it is more than the limiting plate of its elastic limit that the lower section of the gag lever post, which is equipped with for preventing spring works,.
Further, the head cover includes the first lid being arranged at the top of the filter screen and with relatively turnable
Mode is mounted on the second lid above first lid；First lid be equipped with several first leakage holes, described second
Lid be equipped with several the second leakage holes corresponding with first leakage hole, rotation the second lid make the second lid the second leakage hole and
Second leakage hole of the second lid is corresponded and is connected to, or makes the second leakage hole of the second lid and the first leakage hole of the first lid
Mutual dislocation and close.
Further, the top of second lid is equipped with drive protection cover, and the driver is arranged in the driving
In device protective cover.
Beneficial effects of the present invention are：
1, it is designed by using straight tube channel, the installation of straight barrel type floor drain is simple and convenient, sewage flow overcapacity is big, circulation is suitable
Freely, drainage effect is good.
2, filter chamber is equipped with by the top in deodorization room, is equipped with filter screen in filter chamber, and in the bottom of filter screen
Be vertically installed with several equally distributed spicules, several spicules can support the solid impurity of bulk, with prevent compared with
The solid impurity of bulk directly overlays causes mesh to block on the mesh of filter screen.
3, by the way that cleaning device is arranged in filter chamber, the waste water in filter chamber can be stirred during leak
It mixes, to prevent the mesh for blocking filter screen after the contamination precipitation being retained down in filter chamber from influencing proper drainage function；Pass through
In the end set hairbrush of strut, the side wall of filter screen can be scrubbed during the work time；By in the lower section of filter screen
Water injector is set, filter screen can be rinsed after work, staff only needs periodically to take out filter screen clear
Except the solid impurity in filter screen, filter screen need not be cleaned.
4, by the way that deodorization room is arranged in the lower section of filter chamber, and pass through the stink-insulating stopper realization deodorant function in deodorization room.
5, by the way that rotatable second lid is arranged above the first lid, second on the second lid is adjusted by rotation
The relative position of the first leakage hole on leakage hole and the first lid realizes the opening and closing of floor drain leakage hole, can be by the when not working
First leakage hole mutual dislocation of the second leakage hole of two lids and the first lid and close, form second deodorization barrier.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, constitutes part of this application, at this
Same or analogous part, the illustrative embodiments and their description of the application are indicated using identical reference label in a little attached drawings
For explaining the application, the improper restriction to the application is not constituted.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of one embodiment of the invention；
Fig. 2 is the structural schematic diagram of the filter screen of one embodiment of the invention；
Fig. 3 is the structural schematic diagram of the sparge pipe of one embodiment of the invention；
Fig. 4 is the vertical view of the second lid of one embodiment of the invention.
Wherein：1, floor drain body；2, filter chamber；3, deodorization room；4, raised；41, sparge pipe；42, feed pipe；43, it sprays water
Head；44, supporting rack；5, filter screen；6, the first lid；61, the second lid；611, the second leakage hole；612, drive protection cover；7、
Agitating shaft；71, strut；72, driver；8, water sensor；9, it blocks；10, gag lever post；11, spring；12, support ring；13、
Limiting plate；14, magnetic stripe.
Specific implementation mode
As shown in Figure 1 is anti-blocking every the industrial floor drain of smelly type comprising cylinder floor drain body 1；The floor drain master
Body 1 includes filter chamber 2, the head cover being arranged at the top of the filter chamber 2 and the deodorization chamber * winding paper being arranged below the filter chamber 2, and
Inwardly protruding 4 protrusion 4 in a ring is equipped between the filter chamber 2 and deodorization room 3.Wherein, above and below filter chamber 2 and deodorization chamber * winding paper
Straight-through setting, the installation of straight barrel type floor drain is simple and convenient, sewage flow overcapacity is big, flow smoothly, drainage effect is good.
It is equipped with and the matched filter screen 5 of 2 shape of the filter chamber, the open end of the filter screen 5 in the filter chamber 2
It (is such as threadedly coupled, bayonet connection) with the head cover detachable connection.The application in the top of deodorization room 3 by being equipped with
Filter screen 5 when cleaning, need to only be taken out, open head cover, you can remove filter screen by strainer 5, the impurity that can be used in filter sewage
5 sundries, it is easy to use, and convenient for cleaning.Also, the bottom of the filter screen 5 is vertically equipped with several equally distributed needle-shaped
Body 51 (as shown in Figure 2), several spicules 51 can support the solid impurity of bulk, to prevent relatively large solid impurity
Directly overlay causes mesh to block on the mesh of filter screen 5.
Self-stripping unit is equipped in the filter screen 5, the self-stripping unit includes being vertically set in the filter screen
Agitating shaft 7, the top of the agitating shaft 7 connect across the head cover with the driver 72 being fixed on above head cover, bottom end
The bottom of the filter screen 5 is extended perpendicularly to, the agitating shaft 7 is equipped with several horizontally disposed struts 71, the strut 71
End be equipped with hairbrush 72；The application, can be during leak to filter chamber 5 by the way that cleaning device is arranged in filter chamber 2
In waste water be stirred, to prevent the mesh for blocking filter screen 5 after the contamination precipitation being retained down in filter chamber 2 from influencing just
Normal drain function；By the end set hairbrush 2 in strut 71, the side wall of filter screen 5 can be scrubbed during the work time；
Staff only needs periodically to take out the solid impurity in the removing filter screen 5 of filter screen 5, need not be carried out to filter screen 5
Cleaning.
As shown in figure 3, being in equipped with one in described raised 4 discharge outlet formed stated between filter chamber 2 and deodorization room 3
The sparge pipe 41 of annular；The sparge pipe 41 is connected to a feed pipe 42, and the sparge pipe 41 is fixed on by supporting rack 44
The fountain head 43 that several bottom walls towards the filter screen 5 are arranged is distributed in the discharge outlet, and on the sparge pipe 41.This
Application can be rinsed filter screen 5 after work by the way that water injector is arranged in the lower section of filter screen 5, make personnel
It only needs periodically to take out the solid impurity in filter screen removing filter screen 5, filter screen 5 need not be cleaned.
Support ring 12 is equipped in the deodorization room 3, what is be fixed in the support ring 12 is fixed on support by spring 11
Stink-insulating stopper on ring 12, the gag lever post 10 that the stink-insulating stopper includes and is set in spring 11, and it is fixed on the gag lever post
The diameter of closure 9 on 10, the closure 9 is more than described raised 4 holes formed between the filter chamber 2 and deodorization room 3
Aperture.When sewage enters floor drain body 1, due to the downward pressure of water, 9 downward compressed springs 11 are blocked, block 9 to moving down
Dynamic, water passes through from the slot formed by protrusion 4, and when flow is reduced or is flow to end, the pressure blocked on 9 reduces, lower springs 11
Elastic force will block 9 upward top pressures and seals up above-mentioned slot automatically, and filter chamber 2 is made to be isolated with deodorization room 3, prevent on the foul smell of lower part
String.
According to one embodiment of the application, the bottom of the filter chamber 2 is equipped with water sensor 8, the water logging sensing
Device 8 is connect with the input terminal of a controller, and the output end of the controller is connect with 72 (not shown) of the driver.It is working
In the process, it can detect in filter chamber 2 whether have waste water entrance by water sensor 8, when detecting in filter chamber 2 there is waste water
Into fashionable, i.e., drive signal is sent from trend driver 72 by controller, driver 72 is made to drive agitating device work；Work as inspection
Measuring does not have waste water entrance then to control driver 72 in filter chamber 2 is stopped to reach energy-efficient purpose.
According to one embodiment of the application, the agitating shaft 7 is equipped with several magnetic stripes 14, the iron in adsorbable waste water
Bits prevent the iron filings in waste water from damaging agitating device.
According to one embodiment of the application, the lower section of the gag lever post 10 is equipped with for preventing spring 11 from working more than it
The limiting plate 13 of elastic limit, and the spring 11 in the application uses multi-strand spring.
According to one embodiment of the application, the head cover include be arranged the first lid 6 at the top of the filter screen 5 with
And the second lid 61 of first lid, 6 top is mounted in a manner of relatively turnable；If first lid 6 is equipped with
Dry first leakage hole, second lid 61 are equipped with several the second leakage holes 611 corresponding with first leakage hole, the second lid of rotation
Body 61 makes the second leakage hole 611 of the second lid 61 be corresponded with the second leakage hole 611 of the second lid 61 and is connected to, or makes
Second leakage hole 611 of two lids 61 is closed with the first leakage hole mutual dislocation of the first lid 6.In the course of work, rotation second
Lid 61 makes the second leakage hole 611 of the second lid 61 be corresponded with the second leakage hole 611 of the second lid 61 and is connected to and to form leakage
Water hole；When not working, can by the first leakage hole mutual dislocation of the second leakage hole 611 of the second lid 61 and the first lid 6 and
It closes, to prevent outside the buildings peculiar smell Chuan Chudi in filter chamber 2, forms second deodorization barrier.
According to one embodiment of the application, the top of second lid 61 is equipped with drive protection cover 612, the drive
The dynamic setting of device 72, to protect driver 72, prevents driver 72 to be impacted and is destroyed in the drive protection cover 612.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (6)
1. a kind of anti-blocking every the industrial floor drain of smelly type, which is characterized in that including cylinder floor drain body；The floor drain body
Including filter chamber, head cover and the deodorization chamber * winding paper that is arranged below the filter chamber in the filter chamber top, and the mistake are set
Inwardly protruded protrusion in a ring is equipped between filter chamber and deodorization room；
It is equipped in the filter chamber and the matched filter screen of the filtering chamber shape, the open end of the filter screen and the top
Lid detachable connection, and the bottom of the filter screen is vertically equipped with several equally distributed spicules；
Self-stripping unit is equipped in the filter screen, the self-stripping unit includes the stirring being vertically set in the filter screen
The top of axis, the agitating shaft is connect across the head cover with the driver being fixed on above head cover, and bottom end extends perpendicularly to
The bottom of the filter screen, the agitating shaft are equipped with several horizontally disposed struts, and the end of the strut is equipped with hairbrush；
It is equipped with a sparge pipe in a ring in the discharge outlet convexed to form stated between filter chamber and deodorization room；It is described
Sparge pipe is connected to a feed pipe, and the sparge pipe is fixed on by supporting rack in the discharge outlet, and on the sparge pipe
The fountain head that several bottom walls towards the filter screen are arranged is distributed with；
Support ring, the deodorization being fixed on by spring in support ring being fixed in the support ring are equipped in the deodorization room
It fills in, the gag lever post that the stink-insulating stopper includes and is set in spring, and the closure being fixed on the gag lever post, the closure
Diameter be more than the aperture in the hole convexed to form between the filter chamber and deodorization room.
2. according to claim 1 anti-blocking every the industrial floor drain of smelly type, which is characterized in that the bottom of the filter chamber is equipped with
Water sensor, the water sensor are connect with the input terminal of a controller, the output end of the controller and the driving
Device connects.
3. according to claim 1 anti-blocking every the industrial floor drain of smelly type, which is characterized in that the agitating shaft is equipped with several
Magnetic stripe.
4. according to claim 1 anti-blocking every the industrial floor drain of smelly type, which is characterized in that the lower section of the gag lever post is equipped with
It is more than the limiting plate of its elastic limit for preventing spring works.
5. according to claim 1 anti-blocking every the industrial floor drain of smelly type, which is characterized in that the head cover includes being arranged in institute
The second lid stated the first lid at the top of filter screen and be mounted in a manner of relatively turnable above first lid；
First lid is equipped with several first leakage holes, and second lid is equipped with several with first leakage hole corresponding second
Leakage hole, the second lid of rotation make the second leakage hole of the second lid be corresponded with the second leakage hole of the second lid and are connected to, or
The second leakage hole of the second lid is set to be closed with the first leakage hole mutual dislocation of the first lid.
6. according to claim 1 anti-blocking every the industrial floor drain of smelly type, which is characterized in that set at the top of second lid
There are drive protection cover, the driver to be arranged in the drive protection cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810152300.XA CN108457360A (en) | 2018-02-14 | 2018-02-14 | It is anti-blocking every the industrial floor drain of smelly type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810152300.XA CN108457360A (en) | 2018-02-14 | 2018-02-14 | It is anti-blocking every the industrial floor drain of smelly type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108457360A true CN108457360A (en) | 2018-08-28 |
Family
ID=63217094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810152300.XA Pending CN108457360A (en) | 2018-02-14 | 2018-02-14 | It is anti-blocking every the industrial floor drain of smelly type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108457360A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145009A (en) * | 2019-05-31 | 2019-08-20 | 重庆建工第九建设有限公司 | A kind of energy-saving building water circulation system |
| CN110629858A (en) * | 2019-09-09 | 2019-12-31 | 深圳市贝优通新能源技术开发有限公司 | Intelligent household floor drain with anti-blocking function |
| CN111648459A (en) * | 2020-06-10 | 2020-09-11 | 惠安洛强装修设计中心 | Municipal administration rainwater discharges and cuts dirty device |
| CN112227505A (en) * | 2020-10-14 | 2021-01-15 | 秦霞 | Automatic anti-blocking type environment-friendly sewage drainage floor drain |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2270078Y (en) * | 1996-09-27 | 1997-12-10 | 朱绍鸿 | Drainer with improved structure |
| CN201635163U (en) * | 2010-02-11 | 2010-11-17 | 厦门凯立五金企业有限公司 | Floor drain with impeller |
| CN201840924U (en) * | 2010-07-02 | 2011-05-25 | 何建明 | Self-cleaning sewage filter |
| CN204059557U (en) * | 2014-09-11 | 2014-12-31 | 苏州市清华阳光能源有限公司 | A kind of floor drain |
| CN204252263U (en) * | 2014-11-06 | 2015-04-08 | 中山市马迅电器有限公司 | A kind of Novel drain |
| CN205653876U (en) * | 2016-04-21 | 2016-10-19 | 王愉婷 | Environmental protection floor drain for bathroom |
| CN205760009U (en) * | 2016-05-31 | 2016-12-07 | 自贡市华尔美科技有限公司 | It is conveniently replaceable the defecator of cleaning structure |
| CN206591612U (en) * | 2017-03-07 | 2017-10-27 | 广东菜丁网络科技有限公司 | A kind of disinfecting direct-exhausting floor drain |
| CN208287590U (en) * | 2018-02-02 | 2018-12-28 | 浙江泰力斯机械制造有限公司 | A kind of automatic cleaning screen filter |
-
2018
- 2018-02-14 CN CN201810152300.XA patent/CN108457360A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2270078Y (en) * | 1996-09-27 | 1997-12-10 | 朱绍鸿 | Drainer with improved structure |
| CN201635163U (en) * | 2010-02-11 | 2010-11-17 | 厦门凯立五金企业有限公司 | Floor drain with impeller |
| CN201840924U (en) * | 2010-07-02 | 2011-05-25 | 何建明 | Self-cleaning sewage filter |
| CN204059557U (en) * | 2014-09-11 | 2014-12-31 | 苏州市清华阳光能源有限公司 | A kind of floor drain |
| CN204252263U (en) * | 2014-11-06 | 2015-04-08 | 中山市马迅电器有限公司 | A kind of Novel drain |
| CN205653876U (en) * | 2016-04-21 | 2016-10-19 | 王愉婷 | Environmental protection floor drain for bathroom |
| CN205760009U (en) * | 2016-05-31 | 2016-12-07 | 自贡市华尔美科技有限公司 | It is conveniently replaceable the defecator of cleaning structure |
| CN206591612U (en) * | 2017-03-07 | 2017-10-27 | 广东菜丁网络科技有限公司 | A kind of disinfecting direct-exhausting floor drain |
| CN208287590U (en) * | 2018-02-02 | 2018-12-28 | 浙江泰力斯机械制造有限公司 | A kind of automatic cleaning screen filter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145009A (en) * | 2019-05-31 | 2019-08-20 | 重庆建工第九建设有限公司 | A kind of energy-saving building water circulation system |
| CN110629858A (en) * | 2019-09-09 | 2019-12-31 | 深圳市贝优通新能源技术开发有限公司 | Intelligent household floor drain with anti-blocking function |
| CN111648459A (en) * | 2020-06-10 | 2020-09-11 | 惠安洛强装修设计中心 | Municipal administration rainwater discharges and cuts dirty device |
| CN112227505A (en) * | 2020-10-14 | 2021-01-15 | 秦霞 | Automatic anti-blocking type environment-friendly sewage drainage floor drain |
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Application publication date: 20180828 |
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| RJ01 | Rejection of invention patent application after publication |