CN109372066B - Bathroom sewer line for cleaning blocking sundries by utilizing water pipe blocking water pressure difference - Google Patents
Bathroom sewer line for cleaning blocking sundries by utilizing water pipe blocking water pressure difference Download PDFInfo
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- CN109372066B CN109372066B CN201811254115.8A CN201811254115A CN109372066B CN 109372066 B CN109372066 B CN 109372066B CN 201811254115 A CN201811254115 A CN 201811254115A CN 109372066 B CN109372066 B CN 109372066B
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- pipe
- pressure difference
- sundries
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/122—Pipe-line systems for waste water in building
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- 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
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a bathroom sewer pipe for cleaning blocked sundries by utilizing water pipe blocked water pressure difference, which structurally comprises the sewer pipe, a filter screen cover and a water pressure difference cleaning device, wherein the sewer pipe is arranged in a bathroom floor, the filter screen cover is arranged at the upper end of the sewer pipe, and the water pressure difference cleaning device is arranged below the sewer pipe and is in through connection. According to the invention, the sundries winding disc is arranged in the sewer pipe, so that the bathroom sewage can be secondarily filtered, and the situation that when the filter screen cover loses the function, sundries such as hair and tissues directly enter the sewer pipe and are clamped in a certain section of pipe, so that the pipe is blocked and needs to be dredged by a professional is avoided, and time and money are saved; through the water pressure difference flow guide mechanism, when the sundries winding disc is full of sundries and water cannot be led, the sundries can be automatically pushed out of the ground by the aid of water pressure in the pipeline and a hydraulic mode to be cleaned, and self-cleaning of the pipeline is achieved.
Description
Technical Field
The invention relates to the field of sewer pipes, in particular to a bathroom sewer pipe for cleaning blocked sundries by utilizing water pressure difference of a water pipe.
Background
The bathroom sewer pipe refers to a pipe for draining sewage in a bathroom, but the bathroom sewer pipe in the prior art has the following defects:
1. the bathroom often has debris such as hair, paper handkerchief to flow to sewer pipe along with the water flow, though there is the filter screen lid to block it, because its influence goes out the water, leads to often someone to lift it off, leads to debris direct entering pipeline under water, and the pipeline is blockked up along with the accumulation of time, needs the professional of dredging the pipeline, and is time-consuming and costly.
2. Traditional bathroom sewer pipe only has this filtration of filter screen lid, when this filtration lost effect, does not have secondary filtration to filter bathroom sewage, the purification treatment of the later stage sewage of not being convenient for.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a bathroom sewer pipe for cleaning up blocked impurities by utilizing water pressure difference of a water pipe, and aims to solve the defects that in the bathroom sewer pipe in the prior art, the impurities such as hair, tissues and the like frequently flow to the sewer pipe along with water, although a filter screen cover blocks the impurities, the impurities are lifted off by a person frequently due to influence on water outlet, the impurities directly enter the sewer pipe, the pipeline is blocked due to accumulation of the impurities along with time, professional staff for dredging the pipeline is required, time and money are wasted, and the traditional bathroom sewer pipe only has a filter structure of the filter screen cover.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a bathroom sewer pipe for cleaning blocked sundries by utilizing water pipe blocked water pressure difference structurally comprises a sewer pipe, a filter screen cover and a water pressure difference cleaning device, wherein the sewer pipe is arranged inside a bathroom floor, the filter screen cover is arranged at the upper end of the sewer pipe, and the water pressure difference cleaning device is arranged below the sewer pipe and is in through connection;
the hydraulic pressure difference cleaning device is composed of a hydraulic pressure difference flow guide mechanism, a hydraulic pipe, a hydraulic pressure pushing cleaning mechanism and a blocking sundry cleaning conveying pipeline, wherein the hydraulic pressure difference flow guide mechanism is arranged below the horizontal section of the sewer pipeline, the hydraulic pipe is arranged behind the hydraulic pressure difference flow guide mechanism and is in through connection with the hydraulic pressure pushing cleaning mechanism, the hydraulic pressure pushing cleaning mechanism is arranged inside the hydraulic pipe and adopts transition fit, and the blocking sundry cleaning conveying pipeline is arranged right above the hydraulic pipe and is positioned above the sewer pipeline.
As a further scheme of the invention, the water pressure difference flow guide mechanism comprises a hydraulic infusion tube, a water pressure difference piston block, a compression spring, a support plate and a flow guide tube, wherein the hydraulic infusion tube is vertically arranged below the sewer pipeline and is vertically communicated, the water pressure difference piston block is arranged inside the upper end of the hydraulic infusion tube and is in transition fit, the compression spring is arranged below the water pressure difference piston block, two ends of the compression spring are respectively welded with the water pressure difference piston block and the support plate, and the flow guide tube is arranged in front of the hydraulic infusion tube and is communicated.
As a further scheme of the invention, the flow guide pipe is in a U-shaped structure, two ends of the flow guide pipe are communicated with the hydraulic liquid conveying pipe, the length of the water pressure difference piston block is smaller than the distance between two pipe openings of the flow guide pipe, and the purpose of utilizing the water pressure difference, automatically guiding the flow and providing the hydraulic driving force is realized.
As a further scheme of the invention, the hydraulic pushing cleaning mechanism is composed of a hydraulic piston block, a water passing support rod, a water blocking column and a sundries winding disc, wherein the hydraulic piston block is arranged below the water passing support rod, the water blocking column is arranged above the water passing support rod, and the sundries winding disc is arranged above the water blocking column and is connected with the water blocking column through electric welding.
In a further aspect of the present invention, the water flow support rod has two ends, the upper and lower ends of the water flow support rod are welded to the hydraulic piston block and the water blocking column respectively, and the water flow support rod is arranged side by side, has the same length as the diameter of the sewer pipe, and can flow water, so that the water flow is realized after the sundries are sent out, and the water pressure is reduced.
As a further scheme of the invention, the water blocking column is of a cylindrical structure, the length of the water blocking column is the same as that of the blocking sundry cleaning and conveying pipeline, water flow blocking is realized, water pressure is guaranteed, and sundries are sent out.
According to a further scheme of the invention, the sundries winding disc comprises a center block, an inner ring, an outer ring, a welding screw rod and sundries winding hooks, wherein the center block is arranged in the center of the inner ring, the outer ring is arranged outside the inner ring, the inner ring and the outer ring are welded with the center block through the welding screw rod, and the sundries winding hooks are uniformly arranged on the front surfaces of the inner ring and the outer ring.
As a further scheme of the invention, the sundries winding hooks arranged on the front surface of the inner ring are radially distributed outwards, and the sundries winding hooks arranged on the front surface of the outer ring are staggered inwards and outwards, so that sundries can be fully hooked.
Advantageous effects of the invention
Compared with the traditional bathroom sewer pipe, the bathroom sewer pipe has the advantages that the sundry winding disc is arranged in the sewer pipe, so that bathroom sewage can be secondarily filtered, and the situation that when the filter screen cover loses the function, sundries such as hair and tissues directly enter the sewer pipe and are clamped in a certain section of pipe, so that the pipe is blocked and needs to be dredged by professional staff is avoided, and time and money are saved;
according to the invention, through the water pressure difference flow guide mechanism, when the sundries winding disc is full of sundries and water cannot be supplied, the sundries can be automatically pushed out of the ground by using the water pressure in the pipeline and adopting a hydraulic mode to clean the sundries, so that the self-cleaning of the pipeline is realized.
Drawings
Other features, objects and advantages of the invention will become more apparent from a reading of the detailed description of non-limiting embodiments with reference to the attached drawings.
In the drawings:
FIG. 1 is a plan view showing the structure of a bathroom sewer line for cleaning up clogged impurities by using water pressure difference of the water line clogged according to the present invention.
Fig. 2 is a structural plan view of a differential water pressure guide mechanism of the present invention.
Fig. 3 is a working state diagram of a differential water pressure guide mechanism of the invention.
FIG. 4 is a plan view of a hydraulic pushing cleaning mechanism according to the present invention.
Fig. 5 is a structural plan view of a sundries winding disc of the invention.
FIG. 6 is a view showing the working state of the sewer line of the bathroom in which the water pipe is blocked to remove the blocking impurities according to the present invention.
In the figure: the device comprises a sewer pipe 1, a filter screen cover 2, a water pressure difference cleaning device, a water pressure difference guide mechanism 31, a hydraulic pipe 32, a hydraulic pushing cleaning mechanism 33, a blocked sundries cleaning and conveying pipeline 34, a hydraulic infusion pipe 311, a water pressure difference piston block 312, a compression spring 313, a supporting plate 314, a guide pipe 315, a hydraulic piston block 331, a water through supporting rod 332, a water retaining column 333, a sundries winding disc 334, a central block a, an inner ring b, an outer ring c, a welding screw rod d and a sundries winding hook e.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in figures 1-6, the invention provides a technical proposal of utilizing water pipe blocking water pressure difference to clean the bathroom sewer pipe blocking sundries:
a bathroom sewer line for cleaning blocked sundries by utilizing water pipe blocked water pressure difference structurally comprises a sewer line 1, a filter screen cover 2 and a water pressure difference cleaning device, wherein the sewer line 1 is installed inside a bathroom floor, the filter screen cover 2 is arranged at the upper end of the sewer line 1, and the water pressure difference cleaning device is arranged below the sewer line 1 and is in through connection;
the hydraulic pressure difference cleaning device is composed of a hydraulic pressure difference flow guide mechanism 31, a hydraulic pipe 32, a hydraulic pressure pushing cleaning mechanism 33 and a blocking sundry cleaning conveying pipeline 34, wherein the hydraulic pressure difference flow guide mechanism 31 is arranged below the horizontal section of the sewer pipeline 1, the hydraulic pipe 32 is arranged behind the hydraulic pressure difference flow guide mechanism 31 and is in through connection, the hydraulic pressure pushing cleaning mechanism 33 is arranged inside the hydraulic pipe 32 and adopts transition fit, and the blocking sundry cleaning conveying pipeline 34 is arranged right above the hydraulic pipe 32 and is positioned above the sewer pipeline 1.
The water pressure difference flow guide mechanism 31 is composed of a hydraulic infusion tube 311, a water pressure difference piston block 312, a compression spring 313, a support plate 314 and a flow guide tube 315, wherein the hydraulic infusion tube 311 is vertically arranged below the sewer pipe 1 and is vertically communicated, the water pressure difference piston block 312 is arranged inside the upper end of the hydraulic infusion tube 311 and is in transition fit, the compression spring 313 is arranged below the water pressure difference piston block 312, two ends of the compression spring are respectively welded with the water pressure difference piston block 312 and the support plate 314, and the flow guide tube 315 is arranged in front of the hydraulic infusion tube 311 and is communicated.
The flow guide pipe 315 is of a U-shaped structure, two ends of the flow guide pipe 315 are communicated with the hydraulic liquid conveying pipe 311, and the length of the water pressure difference piston block 312 is smaller than the distance between two pipe openings of the flow guide pipe 315, so that the hydraulic driving force is provided by utilizing the water pressure difference and automatically guiding the flow.
Hydraulic pressure top pushes away clearance mechanism 33 comprises hydraulic piston piece 331, water branch 332, manger plate post 333, debris winding dish 334, water branch 332 below is located to hydraulic piston piece 331, manger plate post 333 is located water branch 332 top, debris winding dish 334 is located water branch 333 top and is connected through the electric welding.
The two water-passing support rods 332 are arranged side by side, the upper ends and the lower ends of the two water-passing support rods are respectively welded with the hydraulic piston block 331 and the water blocking column 333, the length of each water-passing support rod 332 is the same as the diameter of the sewer pipeline 1, water can be passed through after sundries are sent out, and the water pressure is reduced.
The water blocking column 333 is of a cylindrical structure, the length of the water blocking column is the same as that of the blocking sundry cleaning and conveying pipeline 34, water flow is blocked, water pressure is guaranteed, and sundries are sent out.
The sundries winding disc 334 is composed of a center block a, an inner ring b, an outer ring c, a welding screw rod d and sundries winding hooks e, the center block a is arranged in the center of the inner ring b, the outer ring c is arranged outside the inner ring b, the inner ring b and the outer ring c are welded with the center block a through the welding screw rod d, and the sundries winding hooks e are evenly arranged on the front surfaces of the inner ring b and the outer ring c.
The sundries winding hooks e arranged on the front surface of the inner ring b are distributed outwards in a radial mode, and the sundries winding hooks e arranged on the front surface of the outer ring c are distributed inwards and outwards in a staggered mode, so that sundries can be fully hooked.
The working principle of the invention is as follows: when the bathroom sewer pipe is installed in a bathroom floor, sundries such as hair, tissues and the like frequently flow to a port of the sewer pipe 1 along with water when the bathroom sewer pipe is used, the filter screen cover 2 blocks the sundries, the water outlet is influenced along with the accumulation of the sundries over time, people frequently and directly lift the filter screen cover 2 to one side, the sundries directly flow into the sewer pipe 1 at the moment, the sundries are blocked and wound by the sundries due to the fact that the sundries winding disc 334 is arranged in the sewer pipe 1, the water passing performance of the sundries winding disc 334 is reduced along with the increase of the sundries, and finally water is not passed completely; at this time, the water cannot be discharged from the sewer pipe 1, the water pressure in the sewer pipe 1 increases with the increase of the water amount, the water pressure difference piston block 312 is pushed downwards, the water pressure difference piston block 312 moves downwards to move away from the upper port of the flow guide pipe 315, so that the flow guide pipe 315 is communicated, water flows into the hydraulic pipe 32 through the flow guide pipe 315 and the hydraulic infusion pipe 311, the hydraulic piston block 331 is pushed upwards, the hydraulic piston block 331 and the water blocking column 333 move upwards along the blocked sundries cleaning and conveying pipeline 34 through the water passing support rod 332, at this time, the water pressure continues to increase as the water blocking column 333 blocks the sewer pipe 1, the water blocking column 333 drives the sundries winding disc 334 to move upwards to block the upper pipe opening of the sundries cleaning and conveying pipeline 34, sundries wound on the sundries winding hook e of the sundries winding disc 334 are cleaned, at this time, the water passing support rod 332 moves right to the sewer pipe 1, at this time, the cleaned sundries winding disc 334 returns to the original state, and the process is circulated.
The invention solves the problems that in the bathroom sewer pipe of the prior art, sundries such as hair, paper towels and the like frequently flow to the sewer pipe along with water, although the filter screen cover blocks the sewer pipe, the sundries are lifted off by people frequently due to the influence of water outlet, so that the sundries directly enter the sewer pipe and are accumulated along with time to block the sewer pipe, and a professional who needs to dredge the sewer pipe is required, thus consuming time and money, and the traditional bathroom sewer pipe only has a filter structure of the filter screen cover, when the filter structure loses the effect, no secondary filter structure filters bathroom sewage, and the later-period sewage purification treatment is inconvenient, the pipeline is blocked and needs to be dredged by professional personnel, so that time and money are saved; through the water pressure difference flow guide mechanism, when the sundries winding disc is full of sundries and water cannot be led, the sundries can be automatically pushed out of the ground by the aid of water pressure in the pipeline and a hydraulic mode to be cleaned, and self-cleaning of the pipeline is achieved. .
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. The utility model provides an utilize water pipe to block up bathroom sewer line of water differential clearance jam debris, its structure includes sewer line (1), filter screen lid (2), water differential cleaning device, its characterized in that: the sewer pipe (1) is arranged in the bathroom floor, the filter screen cover (2) is arranged at the upper end of the sewer pipe (1), and the water pressure difference cleaning device is arranged below the sewer pipe (1) and is in through connection; the water pressure difference cleaning device comprises a water pressure difference flow guide mechanism (31), a hydraulic pipe (32), a hydraulic pushing cleaning mechanism (33) and a blocking sundry cleaning conveying pipeline (34), wherein the water pressure difference flow guide mechanism (31) is arranged below the horizontal section of the sewer pipeline (1), the hydraulic pipe (32) is arranged behind the water pressure difference flow guide mechanism (31) and is in through connection, the hydraulic pushing cleaning mechanism (33) is arranged inside the hydraulic pipe (32) and adopts transition fit, the blocking sundry cleaning conveying pipeline (34) is arranged right above the hydraulic pipe (32) and is positioned above the sewer pipeline (1), the upper end of the hydraulic pipe (32) is in through connection with the sewer pipeline (1), and the lower end of the blocking sundry cleaning conveying pipeline (34) is in through connection with the sewer pipeline (1);
the water pressure difference flow guide mechanism (31) comprises a hydraulic infusion tube (311), a water pressure difference piston block (312), a compression spring (313), a support plate (314) and a flow guide tube (315), wherein the hydraulic infusion tube (311) is vertically arranged below the sewer pipe (1) and is vertically communicated, the water pressure difference piston block (312) is arranged inside the upper end of the hydraulic infusion tube (311) and is in transition fit, the compression spring (313) is arranged below the water pressure difference piston block (312), two ends of the compression spring are respectively welded with the water pressure difference piston block (312) and the support plate (314), and the flow guide tube (315) is arranged in front of the hydraulic infusion tube (311) and is communicated;
the flow guide pipe (315) is of a U-shaped structure, two ends of the flow guide pipe are communicated with the hydraulic infusion pipe (311), and the length of the water pressure difference piston block (312) is smaller than the distance between two pipe orifices of the flow guide pipe (315); the hydraulic pushing cleaning mechanism (33) is composed of a hydraulic piston block (331), a water-passing support rod (332), a water blocking column (333) and a sundries winding disc (334), wherein the hydraulic piston block (331) is arranged below the water-passing support rod (332), the water blocking column (333) is arranged above the water-passing support rod (332), and the sundries winding disc (334) is arranged above the water blocking column (333) and is connected with the water blocking column (333) through electric welding; the two water passing support rods (332) are welded with the hydraulic piston block (331) and the water blocking column (333) at the upper end and the lower end respectively and arranged side by side, and the length of each water passing support rod (332) is the same as the diameter of the sewer pipeline (1); the water blocking column (333) is of a cylindrical structure, and the length of the water blocking column is the same as that of the blocking sundry cleaning and conveying pipeline (34);
along with the increase of sundries in the sewer pipe (1), the water passing performance of the sundry winding disc (334) is reduced, and finally, water is not passed completely; when the water in the sewer pipe (1) can not flow out, the water pressure in the sewer pipe (1) is increased along with the increase of the water quantity, the water pressure difference piston block (312) is pushed downwards, the water pressure difference piston block (312) moves downwards and moves away from the upper port of the flow guide pipe (315), the flow guide pipe (315) is communicated, and the water flows into the hydraulic pipe (32) through the flow guide pipe (315) and the hydraulic infusion pipe (311).
2. The bathroom sewer pipe for cleaning up blocking sundries by using water pipe blocking water pressure difference as claimed in claim 1, which is characterized in that: sundries winding disc (334) comprises center block (a), inner circle (b), outer lane (c), welding lead screw (d), sundries winding hook (e), inner circle (b) center is located in center block (a), inner circle (b) foreign side is located in outer lane (c), inner circle (b), outer lane (c) are through welding lead screw (d) and center block (a) welding, inner circle (b), outer lane (c) front surface are evenly located in sundries winding hook (e).
3. The bathroom sewer pipe for cleaning up blocking sundries by using water pipe blocking water pressure difference as claimed in claim 2, which is characterized in that: the sundries winding hooks (e) arranged on the front surface of the inner ring (b) are distributed outwards in a radial mode, and the sundries winding hooks (e) arranged on the front surface of the outer ring (c) are distributed inwards and outwards in a staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811254115.8A CN109372066B (en) | 2018-10-25 | 2018-10-25 | Bathroom sewer line for cleaning blocking sundries by utilizing water pipe blocking water pressure difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811254115.8A CN109372066B (en) | 2018-10-25 | 2018-10-25 | Bathroom sewer line for cleaning blocking sundries by utilizing water pipe blocking water pressure difference |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109372066A CN109372066A (en) | 2019-02-22 |
| CN109372066B true CN109372066B (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811254115.8A Active CN109372066B (en) | 2018-10-25 | 2018-10-25 | Bathroom sewer line for cleaning blocking sundries by utilizing water pipe blocking water pressure difference |
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| CN (1) | CN109372066B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456171A (en) * | 2020-04-09 | 2020-07-28 | 杭州甫峒科技有限公司 | Bathroom drain pipe anti-blocking device based on pressure difference principle |
| CN111705895B (en) * | 2020-06-18 | 2021-06-25 | 浙江新颖铜业有限公司 | Self-cleaning floor drain pipe |
| CN112081230A (en) * | 2020-09-08 | 2020-12-15 | 张国良 | A pull throughs for clearing up bathroom sewer hair |
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|---|---|---|---|---|
| KR101622371B1 (en) * | 2015-11-17 | 2016-05-18 | 주식회사 혜원까치종합건축사사무소 | To prevent back flow of sewage piping structure of an apartment house |
| CN107975112A (en) * | 2017-12-08 | 2018-05-01 | 宁波清智环保科技有限公司 | The method for preventing sewage from blocking |
| CN108060705A (en) * | 2018-01-02 | 2018-05-22 | 袁建青 | A kind of dredging device for sewer water pipe |
| CN207959435U (en) * | 2018-02-05 | 2018-10-12 | 湖北嘉乐建设工程有限公司 | A kind of municipal administration soil stack convenient for dredging |
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2018
- 2018-10-25 CN CN201811254115.8A patent/CN109372066B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101622371B1 (en) * | 2015-11-17 | 2016-05-18 | 주식회사 혜원까치종합건축사사무소 | To prevent back flow of sewage piping structure of an apartment house |
| CN107975112A (en) * | 2017-12-08 | 2018-05-01 | 宁波清智环保科技有限公司 | The method for preventing sewage from blocking |
| CN108060705A (en) * | 2018-01-02 | 2018-05-22 | 袁建青 | A kind of dredging device for sewer water pipe |
| CN207959435U (en) * | 2018-02-05 | 2018-10-12 | 湖北嘉乐建设工程有限公司 | A kind of municipal administration soil stack convenient for dredging |
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| CN109372066A (en) | 2019-02-22 |
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Effective date of registration: 20200511 Address after: 273100 Shandong city of Jining province Qufu City East Road No. 1 Applicant after: SHANDONG DONGHONG PIPE INDUSTRY Co.,Ltd. Address before: 526020 No. 80 Xijiang South Road, Zhaoqing, Guangdong Applicant before: Pan Yunsheng |
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