CN211621821U - Novel sewer line with major-minor check valve - Google Patents
Novel sewer line with major-minor check valve Download PDFInfo
- Publication number
- CN211621821U CN211621821U CN202020123175.2U CN202020123175U CN211621821U CN 211621821 U CN211621821 U CN 211621821U CN 202020123175 U CN202020123175 U CN 202020123175U CN 211621821 U CN211621821 U CN 211621821U
- Authority
- CN
- China
- Prior art keywords
- main pipeline
- water inlet
- pipeline
- auxiliary
- floating ball
- 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.)
- Active
Links
Images
Landscapes
- Sewage (AREA)
Abstract
The utility model provides a novel sewer line with major-minor check valve, including trunk line and a plurality of auxiliary pipelines of connection on the trunk line, the trunk line includes main upper line and lower trunk line, main upper line and lower trunk line body coupling, are provided with middle water inlet between main upper line and the lower trunk line, and the auxiliary pipeline sets up the side at main upper line, and the side pipe sets up at the auxiliary pipeline upside to communicate with the auxiliary pipeline; the floating ball is arranged among the upper main pipeline, the middle water inlet and the lower main pipeline; an upper water inlet is arranged on the upper main pipeline, and the floating ball is arranged among the upper main pipeline, the middle water inlet and the lower main pipeline; an upper water inlet is arranged on the upper main pipeline, and the upper water inlet of the upper main pipeline, the auxiliary pipeline and the water inlets on the side pipes are used for connecting a water tank or a drain pipe of other equipment; adopt the technical scheme of the utility model, overall structure realizes simply, not only can effectively prevent trunk line, accessory line sewage backward flow, plays deodorant effect moreover.
Description
Technical Field
The utility model belongs to the technical field of the downcomer, concretely relates to novel sewer pipe with major-minor check valve.
Background
The drainage device in the prior art, such as a drainage device, a floor drain and a sewer pipe, is a drainage part commonly used in a kitchen and a toilet lamp place, and generally has a function of deodorization and insect prevention besides a drainage function. At present, the existing drainage devices mainly adopt a water seal mode to realize the functions of deodorization and insect prevention. However, the drainage device adopting the water seal to realize the deodorization function has the following disadvantages:
1. when the drainage device is not used for a period of time, water for realizing water sealing can be dried, so that odor in a sewer overflows; if the water used for realizing water sealing is dirty water, the water is easy to smell and blacken after a period of time, grows bacteria and is not beneficial to environmental sanitation.
2. Most of the sewer pipes only realize deodorization at the sewer opening of the water pool, but ignore odor possibly emitted by the ground pipeline due to the fact that sealing measures are not in place.
The existing sewer pipe is a pipeline used for connecting a sewer pipe and a ground pipeline, in order to avoid backflow of sewage and rising of odor to a room, people generally select a deodorization device connected to the sewer pipe to prevent odor and backflow of sewage, and the current market is commonly provided with a floating ball deodorization device or a check valve device. At present, sewer pipelines with backflow prevention functions on the market are mostly provided with backflow prevention devices which can be designed on a core pipe, if a main pipeline is blocked, sewage in a relatively high main pipeline can flow back into a relatively lower auxiliary pipe or side pipe, and therefore water backflow pollution is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can effectively prevent trunk line, the novel sewer line that has major-minor check valve of vice pipeline sewage backward flow.
The utility model provides a novel sewer line with major-minor check valve, including trunk line and a plurality of auxiliary pipelines (104) of connection on the trunk line, the trunk line includes main-upward line (1) and main-downward line (4), main-upward line (1) and main-downward line (4) body coupling, be provided with middle water inlet (2) between main-upward line (1) and main-downward line (4), auxiliary pipeline (104) set up at the side of main-upward line (1), side pipe (103) set up in auxiliary pipeline (104) upside, and communicate with auxiliary pipeline (104);
a deodorization core reflux device (5) is arranged in the auxiliary pipeline (104), and the deodorization core reflux device (5) is positioned at the lower part of the side pipe (103);
the floating ball (3) is arranged among the upper main pipeline (1), the middle water inlet (2) and the lower main pipeline (4); an upper water inlet (102) is arranged on the upper main pipeline (1), and the floating ball (3) is arranged among the upper main pipeline (1), the middle water inlet (2) and the lower main pipeline (4); an upper water inlet (102) is arranged on the upper main pipeline (1), and water inlets on the upper water inlet (102), the auxiliary pipeline (104) and the side pipe (103) of the upper main pipeline (1) are used for being connected with a water tank or a water drainage pipe of other equipment;
the middle water inlet (2) is arranged between the upper main pipeline (1) and the lower main pipeline (4), a plurality of guide plates (401) are arranged on the inner wall of the lower main pipeline (4) along the circumference, and the guide plates (401) are obliquely arranged relative to the water inlet direction and have the same oblique direction;
the guide plate (401) is fixed below the middle water inlet (2), the main pipeline rib position 101 is positioned above the middle water inlet (2) and presses the middle water inlet (2) to prevent the middle water inlet from moving, and the opening of the middle water inlet (2) is trumpet-shaped and is used for receiving and collecting inflowing water;
the floating ball (3) is arranged in the lower main pipeline (4), the guide plate (401) plays a supporting and guiding role on the floating ball (3), the diameter of the floating ball (3) is larger than that of the middle water inlet (2), and when the floating ball (3) floats upwards, the water outlet of the middle water inlet (2) can be blocked;
the floating ball (3) is abutted against the inner sides of the guide plates (401), and a water flow channel (6) is formed between the floating ball (3) and the adjacent guide plate (401); when in use, the sewer pipeline is connected to the bottom of the water tank and enables the water inlets on the upper main pipeline, the auxiliary pipeline or the side pipeline to be communicated with the water outlet at the bottom of the water tank. Under the normal state, the floating ball (3) is abutted against the inner side of each guide plate (401). When the water tank discharges water, sewage in the water tank enters the main pipeline through the water inlet, then flows through the water flow channel (6) between every two adjacent guide plates (401), and finally flows out of the main pipeline. When sewage flows back into the main pipeline through the water outlet at the lower end of the main pipeline, the floating ball floats upwards under the buoyancy of the sewage flowing back into the main pipeline to block the water inlet of the main pipeline, so that a deodorization effect is achieved.
The bottom of the lower main pipe (4) is provided with a trap (403); when water flows into the cavity of the upper main pipeline (1) from the water inlet on the upper main pipeline (1) or the auxiliary pipeline (104), the floating ball (3) can rotate downwards under the action of gravity and impact force of the water after passing through the middle water inlet (2), the guide plate (401) is used for guiding and supporting the flowing water, and sewage flows to the water storage elbow (403) at the bottom through the water flow channel (6) and is discharged through the water outlet (402).
Preferably, the diameter of the floating ball (3) is larger than that of the middle water inlet (2), and when the floating ball (3) floats upwards, the water outlet of the middle water inlet (2) can be blocked.
Preferably, the water outlet (402) is higher than the inlet of the trap (403). The bottom of the main pipeline forms a trap structure, so that water can partially exist in the trap and the lower main pipeline, and the floating ball (3) is kept floating to block the water inlet.
Have some sewage to remain in water storage elbow (403) and lower trunk line (4) after the basin finishes draining, the sewage that is located water storage elbow (403) can form sealed and isolated sewer line's foul smell, thereby it can plug up the water inlet of middle water inlet (2) to be located the sewage of trunk line 4 simultaneously and to make floater (3) come-up, sewage, foul smell, worm can not enter into the room like this, realize the main road pipeline anti-reflux promptly, deodorant, the protection against insects.
Preferably, the deodorization core backflow device (5) comprises a rotating shaft (501), a deodorization cover (502), a counterweight steel ball (503) and a deodorization core body (504); deodorant core reflux unit (5) set up in auxiliary conduit (104), the lower part of side pipe (103), the delivery port of deodorant core body (504) is the polygon for increasing the displacement and designing, deodorant lid (502) are connected on deodorant core body (504) and are sealed with deodorant core body (504) export laminating through pivot (501), deodorant lid (502) are gone up and are put counter weight steel ball (503), counter weight steel ball (503) guarantee that deodorant lid (502) return smoothly after opening and are sealed with deodorant core body (504), play auxiliary conduit anti-reflux purpose.
When sewage flows in from the water inlets of the auxiliary pipeline (104) and the side pipeline (103), the deodorization cover (502) rotates clockwise around the rotating shaft (501) under the condition of sewage reuse and impact force, and the deodorization cover (502) opens the sewage and discharges the sewage into the upper main pipeline (1) from the polygonal drainage outlet of the deodorization core body (504). After the sewage is drained, the deodorization cover (502) rotates anticlockwise around the rotating shaft (501) under the action of the counterweight steel ball (503) and the self gravity until the deodorization cover is attached and sealed with the deodorization core body (504). Deodorant lid (502) during operation and gravity contained angle scope are between 6 ~ 52 degrees, and 6 degrees are deodorant lid (502) and deodorant core body (504) sealed minimum angle, and deodorant lid (502) are opened 52 degrees and are the extreme position of contacting with auxiliary conduit (104) and let deodorant lid (502) open completely. When the main sewer pipe blocks up and sewage is accumulated in the main sewer pipe, the deodorization core backflow device (5) is in a closed and sealed state, and the sewage in the main pipe is prevented from flowing back and overflowing from the auxiliary pipe (104).
Preferably, each guide plate (401) on the inner wall of the lower main pipe (4) is arranged obliquely relative to the water inlet direction, and the oblique directions are the same. In the water discharging process of the water tank, as the guide plates (401) are obliquely arranged relative to the water inlet direction and the oblique directions of the guide plates (401) are the same, when sewage flows through the water passing channel between every two adjacent guide plates (401), vortexes in the same direction can be formed. The inner lower part of each guide plate (401) is provided with an inward concave arc surface for contact, and the arc surface supports the floating ball (3). After the drainage is finished, water overflows into the body to enable the floating ball (3) to float upwards and block the water inlet.
Compared with the prior art, the beneficial effects of the utility model are that:
adopt the technical scheme of the utility model, overall structure realizes simply, not only can effectively prevent trunk line, accessory line sewage backward flow, plays deodorant effect moreover.
Drawings
FIG. 1 is a schematic view of the overall front view structure of the present invention;
FIG. 2 is a schematic view of the overall side view structure of the present invention;
FIG. 3 is a cross-sectional view of the novel sewer pipe with primary and secondary backflow prevention features;
FIG. 4 is a partial sectional view of the float ball backflow preventer of the main pipe of the present invention;
FIG. 5 is a partial sectional view of the anti-backflow device with the anti-odor core on the middle auxiliary pipeline of the utility model;
the figures of the accompanying drawings are numbered: the device comprises an upper main pipeline 1, a main pipeline 101, a main pipeline rib position 102, an upper water inlet, a side pipeline 103, an auxiliary pipeline 104, a middle water inlet 2, a floating ball 3, a lower main pipeline 4, a flow guide plate 401, a water outlet 402, a water trap 403, a deodorizing core reflux device 5, a rotating shaft 501, a deodorizing cover 502, a counterweight steel ball 503, a deodorizing core body 504 and a water flow channel 6.
Detailed Description
The following is a detailed description of the present invention with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 5, the utility model provides a specific embodiment of a novel sewer line with main check valve and auxiliary check valve, including a main pipeline and a plurality of auxiliary pipelines 104 connected on the main pipeline, the main pipeline includes an upper main pipeline 1 and a lower main pipeline 4, the upper main pipeline 1 and the lower main pipeline 4 are connected integrally, a middle water inlet 2 is arranged between the upper main pipeline 1 and the lower main pipeline 4, the auxiliary pipeline 104 is arranged at the side of the upper main pipeline 1, a side pipe 103 is arranged at the upper side of the auxiliary pipeline 104 and is communicated with the auxiliary pipeline 104; a deodorization core reflux device 5 is arranged in the auxiliary pipeline 104, and the deodorization core reflux device 5 is positioned at the lower part of the side pipe 103; the floating ball 3 is arranged among the upper main pipeline 1, the middle water inlet 2 and the lower main pipeline 4; an upper water inlet 102 is arranged on the upper main pipeline 1, and the floating ball 3 is arranged among the upper main pipeline 1, the middle water inlet 2 and the lower main pipeline 4; an upper water inlet 102 is arranged on the upper main pipeline 1, and water inlets on the upper water inlet 102, the auxiliary pipeline 104 and the side pipe 103 of the upper main pipeline 1 are used for connecting a water tank or other equipment drainage pipes; the middle water inlet 2 is arranged between the upper main pipeline 1 and the lower main pipeline 4, a plurality of guide plates 401 are arranged on the inner wall of the lower main pipeline 4 along the circumference, and the guide plates 401 are obliquely arranged relative to the water inlet direction and have the same oblique direction; the guide plate 401 is fixed below the middle water inlet 2, the main pipeline rib position 101 is positioned above the middle water inlet 2 and presses the middle water inlet 2 to prevent movement, and the opening of the middle water inlet 2 is horn-shaped and is used for receiving inflow water and collecting the inflow water; the floating ball 3 is arranged in the lower main pipeline 4, the guide plate 401 plays a supporting and guiding role on the floating ball 3, the diameter of the floating ball 3 is larger than that of the middle water inlet 2, and when the floating ball 3 floats upwards, the water outlet of the middle water inlet 2 can be blocked; the floating ball 3 is abutted against the inner sides of the guide plates 401, and a water flow channel 6 is formed between the floating ball 3 and the adjacent guide plate 401; when in use, the sewer pipeline is connected to the bottom of the water tank and enables the water inlets on the upper main pipeline, the auxiliary pipeline or the side pipeline to be communicated with the water outlet at the bottom of the water tank. In a normal state, the float ball 3 abuts against the inner side of each guide plate 401. When the water tank discharges water, sewage in the water tank enters the main pipeline through the water inlet, then flows through the water flow channel 6 between every two adjacent guide plates 401, and finally flows out of the main pipeline. When sewage flows back into the main pipeline through the water outlet at the lower end of the main pipeline, the floating ball floats upwards under the buoyancy of the sewage flowing back into the main pipeline to block the water inlet of the main pipeline, so that a deodorization effect is achieved.
The bottom of the lower main pipeline 4 is provided with a trap 403; when water flows into the cavity of the main upper pipe 1 from the water inlet on the main upper pipe 1 or the auxiliary pipe 104, passes through the middle water inlet 2, the floating ball 3 rotates downwards under the action of the gravity and the impact force of the water, the guide plate 401 is used for guiding and supporting the flowing water, and sewage flows to the water storage elbow 403 at the bottom through the water flow channel 6 and is discharged through the water outlet 402.
The diameter of the floating ball 3 is larger than that of the middle water inlet 2, and the water outlet of the middle water inlet 2 can be blocked when the floating ball 3 floats upwards. The water outlet 402 is higher than the inlet of trap 403. The main pipeline bottom has formed the trap structure, and water just can partially exist in trap and the lower main pipeline like this to make floater 3 keep the come-up state to reach the purpose of plugging up the water inlet. Have some sewage to remain in water storage bend 403 and main pipeline 4 down after the basin finishes draining, the sewage that is located water storage bend 403 can form sealed and isolated sewer pipe in the foul smell, thereby the sewage that is located main pipeline 4 simultaneously can make 3 come-up of floater plug up the water inlet of middle water inlet 2, sewage, foul smell, worm all can not enter into the room like this, realize the main pipeline promptly and prevent backward flow, deodorant, protection against insects.
As shown in fig. 4 to 5, the deodorization core backflow device 5 comprises a rotating shaft 501, a deodorization cover 502, a counterweight steel ball 503 and a deodorization core body 504; the deodorization core backflow device 5 is arranged at the lower parts of the auxiliary pipeline 104 and the side pipe 103, the water outlet of the deodorization core body 504 is designed to be polygonal for increasing the water discharge, the deodorization cover 502 is connected to the deodorization core body 504 through a rotating shaft 501 and is in fit sealing with the outlet of the deodorization core body 504, a counterweight steel ball 503 is arranged on the deodorization cover 502, and the counterweight steel ball 503 ensures that the deodorization cover 502 smoothly returns after being opened and is sealed with the deodorization core body 504, so that the purpose of preventing backflow of the auxiliary pipeline is achieved.
When sewage flows in from the inlets of the auxiliary pipeline 104 and the side pipe 103, the deodorization cover 502 rotates clockwise around the rotating shaft 501 under the influence of sewage gravity and impact force, and the deodorization cover 502 opens the polygonal drainage port of the deodorization core body 504 to drain into the upper main pipeline 1. After the sewage is drained, the deodorization cover 502 rotates anticlockwise around the rotating shaft 501 under the gravity of the counterweight steel ball 503 and the self gravity until the deodorization cover is attached and sealed with the deodorization core body 504. Deodorant lid 502 during operation and the gravity contained angle scope be between 6 ~ 52 degrees, and 6 degrees are deodorant lid 502 and deodorant core body 504 sealed minimum angle, and deodorant lid 502 is opened 52 degrees and is the extreme position of contacting with auxiliary conduit 104 and let deodorant lid 502 open completely. When the main sewer pipe blocks up and sewage is accumulated in the main sewer pipe, the deodorization core backflow device 5 is in a closed sealing state, and the sewage in the main pipe is prevented from flowing back and overflowing from the auxiliary pipe 104.
As shown in FIGS. 3 to 4, the baffles 401 on the inner wall of the lower main pipe 4 are inclined relative to the water inlet direction, and the inclined directions are the same. In the process of discharging water from the water tank, because the guide plates 401 are arranged in an inclined manner relative to the water inlet direction and the inclined directions of the guide plates 401 are the same, when sewage flows through the water passing channel between every two adjacent guide plates 401, vortex flows in the same direction can be formed. The inner lower part of each guide plate 401 is provided with a concave arc surface for contact, and the arc surface supports the floating ball 3. After the drainage is finished, water overflows into the body to enable the floating ball 3 to float upwards and block the water inlet.
The implementations described herein are merely illustrative of the present invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The novel sewer pipeline with the main check valve and the auxiliary check valve is characterized by comprising a main pipeline and a plurality of auxiliary pipelines (104) connected to the main pipeline, wherein the main pipeline comprises an upper main pipeline (1) and a lower main pipeline (4), a middle water inlet (2) is arranged between the upper main pipeline (1) and the lower main pipeline (4), the auxiliary pipelines (104) are arranged on the side edge of the upper main pipeline (1), and side pipes (103) are arranged on the upper side of the auxiliary pipelines (104) and are communicated with the auxiliary pipelines (104);
a deodorization core reflux device (5) is arranged in the auxiliary pipeline (104), and the deodorization core reflux device (5) is positioned at the lower part of the side pipe (103);
the floating ball (3) is arranged among the upper main pipeline (1), the middle water inlet (2) and the lower main pipeline (4); an upper water inlet (102) is arranged on the upper main pipeline (1), a middle water inlet (2) is arranged between the upper main pipeline (1) and the lower main pipeline (4), and a plurality of guide plates (401) are arranged on the inner wall of the lower main pipeline (4) along the periphery; the main pipeline rib position 101 is positioned above the middle water inlet (2) and presses the middle water inlet (2) to prevent the middle water inlet from moving, and the opening of the middle water inlet (2) is trumpet-shaped and is used for receiving and collecting inflow water;
the floating ball (3) is arranged in the lower main pipeline (4), the guide plates (401) support and guide the floating ball (3), the floating ball (3) is abutted against the inner sides of the guide plates (401), and a water flow channel (6) is formed between the floating ball (3) and the adjacent guide plate (401);
the bottom of the lower main pipe (4) is provided with a trap (403); when water flows into the cavity of the upper main pipeline (1) from the water inlet on the upper main pipeline (1) or the auxiliary pipeline (104), the floating ball (3) can rotate downwards under the action of gravity and impact force of the water after passing through the middle water inlet (2), the guide plate (401) is used for guiding and supporting the flowing water, and sewage flows to the water storage elbow (403) at the bottom through the water flow channel (6) and is discharged through the water outlet (402).
2. The novel sewer pipe with the main check valve and the auxiliary check valve as claimed in claim 1, wherein the diameter of the floating ball (3) is larger than that of the middle water inlet (2), and the water outlet of the middle water inlet (2) can be blocked when the floating ball (3) floats upwards.
3. A novel sewer line with primary and secondary check valves as claimed in claim 1, wherein said water outlet (402) is higher than the inlet of trap (403).
4. The novel sewer pipe with the main check valve and the auxiliary check valve as claimed in claim 1, wherein the deodorization core backflow device (5) comprises a rotating shaft (501), a deodorization cover (502), a counterweight steel ball (503) and a deodorization core body (504); deodorant core reflux unit (5) set up in auxiliary conduit (104), the lower part of side pipe (103), the delivery port of deodorant core body (504) is the polygon, deodorant lid (502) are connected on deodorant core body (504) and with deodorant core body (504) export laminating sealed through pivot (501), deodorant lid (502) are gone up and are put counter weight steel ball (503), counter weight steel ball (503) guarantee that deodorant lid (502) return smoothly after opening and are sealed with deodorant core body (504), play auxiliary conduit anti-reflux purpose.
5. The novel sewer pipe with the main check valve and the auxiliary check valve as claimed in claim 1, wherein each guide plate (401) on the inner wall of the lower main pipe (4) is arranged in an inclined manner relative to the water inlet direction, and the inclined directions are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020123175.2U CN211621821U (en) | 2020-01-19 | 2020-01-19 | Novel sewer line with major-minor check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020123175.2U CN211621821U (en) | 2020-01-19 | 2020-01-19 | Novel sewer line with major-minor check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211621821U true CN211621821U (en) | 2020-10-02 |
Family
ID=72639237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020123175.2U Active CN211621821U (en) | 2020-01-19 | 2020-01-19 | Novel sewer line with major-minor check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211621821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155606A (en) * | 2020-01-19 | 2020-05-15 | 浙江润尚厨卫科技有限公司 | A new type of sewer pipeline with main and auxiliary check valves |
-
2020
- 2020-01-19 CN CN202020123175.2U patent/CN211621821U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155606A (en) * | 2020-01-19 | 2020-05-15 | 浙江润尚厨卫科技有限公司 | A new type of sewer pipeline with main and auxiliary check valves |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2018204197A (en) | Catch basin | |
| CN211621821U (en) | Novel sewer line with major-minor check valve | |
| KR100538651B1 (en) | Apparatus for drain sewage | |
| CN111155606A (en) | A new type of sewer pipeline with main and auxiliary check valves | |
| CN2698864Y (en) | Anti-reflux drainage device | |
| CN108412023A (en) | It is a kind of to drain fast, anti-effect returning water, the floor drain being convenient to clean | |
| JP6949759B2 (en) | Plumbing equipment for temporary toilets | |
| KR101056506B1 (en) | Sink drainage structure | |
| CN212801821U (en) | Deodorant drainage device of pond | |
| CN206888138U (en) | A kind of sewage treatment pot backwashed | |
| KR102747262B1 (en) | Street inlet of open and shut door for preventing from a flowing stream | |
| CN113006207B (en) | Building drainage device | |
| KR200348050Y1 (en) | A Trap Drain Pipe of Wash Vessel | |
| JP7401384B2 (en) | drainage piping system | |
| CN108395024A (en) | The miscellaneous water shunt filtering disinfection storage water tank of rainwater in automatic control floor | |
| CN209907514U (en) | Automatic direct flushing closestool | |
| CN210164032U (en) | a backflow preventer | |
| JP4417280B2 (en) | Drainage drainage equipment | |
| CN102086659B (en) | A sealed floor drain | |
| KR20100005037U (en) | Connection socket combined drain trap | |
| KR20060095233A (en) | Odor Blocking Sink | |
| CN201148644Y (en) | Water saving device for bathroom | |
| CN217352750U (en) | Odor-return-preventing drainage joint mounted at upper end of sewer pipe in building | |
| JP2015078500A (en) | Drainage member | |
| CN214169295U (en) | Insect-proof and odor-proof sewer pipe connecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |