CN214612083U - Building water supply and drainage collection system - Google Patents
Building water supply and drainage collection system Download PDFInfo
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- CN214612083U CN214612083U CN202120800135.1U CN202120800135U CN214612083U CN 214612083 U CN214612083 U CN 214612083U CN 202120800135 U CN202120800135 U CN 202120800135U CN 214612083 U CN214612083 U CN 214612083U
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- rainwater
- water
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- tank
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
Abstract
The utility model relates to a building plumbing collection system belongs to plumbing technical field. Building plumbing collection system carries out the rainwater that filters for the first time gathering pond including being used for setting up at the housing construction top and to the rainwater, carry out secondary filter's rainwater filtering ponds to the rainwater, carry out the rainwater treatment pond that purifies to the rainwater after the secondary filter, a reagent that is arranged in adding purifying reagent to the rainwater treatment pond adds the subassembly, a sewage separation pond and biological treatment pond for handling domestic sewage, a tank storage and a controller that are used for storing the rainwater after rainwater treatment pond and biological treatment pond are handled and are purified. Building plumbing collection system can carry out filtration purification to the rainwater of gathering building roof in rainy day at the practical application in-process, purifies the domestic sewage who discharges in the resident's life simultaneously, collects the water resource behind the final purification treatment and recycles, and effective water economy resource reduces sewage treatment plant's pressure, reduces the water pressure of running water.
Description
Technical Field
The utility model relates to a plumbing technical field especially relates to a building plumbing collection system.
Background
Water supply and drainage engineering is researched to solve the problem of social circulation of water. "water supply": a modern water supply plant extracts natural water from rivers and lakes every day, purifies the water into tap water meeting the production and domestic water standards by using physical and chemical means, and then conveys the tap water to thousands of households through a four-way and eighty-percent urban water network. The method comprises the following steps: the advanced sewage treatment plant is used for centralized treatment of sewage and wastewater produced and used in our production and living, and then the sewage and the wastewater are discharged into rivers and lakes cleanly, and the process of taking, treating, conveying and retreating the water and the wastewater is the main content to be researched in water supply and drainage engineering.
With the development of economy, more and more high-rise buildings are pulled out of the ground, residential areas are more and more dense, and water consumption is more and more. At present, sewage and rainwater of people's life are all discharged into the sewer, and are discharged into a sewage pipe network from the sewer, and the sewage pipe network is discharged into a sewage treatment plant for treatment. On the one hand, the rainwater directly enters into the sewage pipe network, can not effectively collect the utilization in the residential block, for example the afforestation of daily residential block, the road is clean, the flushing water in the life etc. the use all is the running water, so causes a large amount of water waste, and on the other hand under the trend that the building is intensive day by day, has also increased sewage treatment plant's treatment pressure for the cyclic utilization's of water time increases.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model aims to provide a building plumbing collection system to realize utilizing the effective collection of rainwater, recycle domestic sewage's effective purification treatment, reach the purpose of water economy resource.
In order to achieve the above object, the utility model adopts the following technical scheme:
a building plumbing collection system comprising:
the rainwater collecting pool comprises supporting vertical plates arranged at four corners of the top of a house building, a rainwater collecting shell arranged on the supporting vertical plates, and a first filter screen detachably connected to the bottom of the rainwater collecting shell, wherein the rainwater collecting shell is provided with a channel for rainwater to flow, the supporting vertical plates close to the outer wall surface of the house building are provided with rainwater discharge ports, and the rainwater discharge ports are connected with water delivery pipes which are fixed on the outer wall surface of the house building through supporting pieces;
the rainwater filtering tank is arranged below the ground, is communicated with the water conveying pipe, and comprises a filtering box and a second filtering net which is detachably assembled in the filtering box;
the rainwater treatment tank is arranged below the ground and beside the rainwater filtering tank and is communicated with the filtering box through a water filtering pipe;
the reagent adding assembly is arranged above the rainwater treatment pool, and comprises a funnel for containing a purifying reagent, and a horizontal channel which is arranged at the lower end of the funnel and is communicated with the space in the funnel, wherein the horizontal channel is provided with a reagent inlet communicated with the rainwater treatment pool, the position of the funnel communicated with the horizontal channel is arranged at intervals with the reagent inlet, a stop block which is arranged oppositely and an electric push rod for driving the stop block to move back and forth are arranged in the horizontal channel, the stop block is abutted against one end of the horizontal channel when in an initial position, the fixed end of the electric push rod is abutted against the other end of the horizontal channel, the funnel is communicated with the horizontal channel so that the purifying reagent enters the horizontal channel, and the stop block gradually plugs an opening at the lower end of the funnel and pushes the purifying reagent falling into the reagent inlet when moving towards the direction of the fixed end of the electric push rod;
the sewage separation tank is arranged below the house building and is communicated with equipment for producing domestic sewage in the house building through a sewage discharge pipe, a culture frame filled with active organic matters is placed in the sewage separation tank, the active organic matters are used for decomposing excrement carried in the domestic sewage through silkworm food, and the top of the sewage separation tank is detachably provided with an air isolating cover for preventing pungent smell in the sewage separation tank from leaking;
the sewage biological treatment tank is communicated with the sewage separation tank, comprises an anaerobic biological treatment area and an aerobic biological treatment area and is used for carrying out biological treatment on sewage;
the water storage tank is communicated with the biological sewage treatment tank and the rainwater treatment tank, a water pumping pipe is arranged in the water storage tank, and the end part of the water pumping pipe extends out of the ground to be connected with water using equipment;
and the controller is in control connection with the electric push rod to realize the extension and retraction of the electric push rod.
The beneficial effects of the above technical scheme are: the utility model discloses a building plumbing collection system carries out double filtration to the rainwater through rainwater gathering tank and rainwater filtering ponds, through controller control electric putter, realizes adding purifying agent in the rainwater treatment pond, carries out purification treatment to the rainwater after the secondary filtration and stores in the tank, effectively handles and utilizes the rainwater; meanwhile, for the domestic sewage of residents, the excrement in the sewage is treated and decomposed by using the culture frame with active organic matters, and the organic matters rich in the domestic sewage are further removed by using the anaerobic biological treatment method and the aerobic biological treatment method, and finally, the domestic sewage is stored in the water storage tank. The stored rainwater can enter the equipment needing water through the water supply pipe, so that the water can be recycled. In the practical application process, the accessible sets up building plumbing collection system and comes to carry out purification treatment and collect the recycle to rainwater and domestic sewage, and effective water economy resource reduces sewage treatment plant's pressure, reduces running water pressure.
Further, gather the water shell including the water gathering casing that is arc pot body form and connect the water gathering pipe in water gathering casing bottom, gather the water pipe and form the passageway that supplies the rainwater to flow, the radial both sides of gathering the water pipe have welded a horizontal plate respectively, are equipped with the perforation that runs through self on the horizontal plate, and fixedly connected with is used for passing fenestrate threaded rod on the first filter screen, and the threaded rod passes through the nut and is in the same place with the removable fixed of horizontal plate.
Has the advantages that: adopt the water-collecting shell of arc pot form, be favorable to the gathering of rainwater to it is comparatively convenient to adopt bolt and nut screw-thread fit's form to install first filter screen.
Furthermore, the water delivery pipe comprises a vertical pipe section parallel to the building and a horizontal pipe section parallel to the ground, and a buffer plate arranged in an inclined manner is arranged at the joint position of the vertical pipe section and the horizontal pipe section.
Has the advantages that: the rainwater collides on the buffer board from the eminence when low department strikes, is difficult for causing the damage to two pipe sections handing-over position departments.
Furthermore, the filter box comprises a box body and a box cover arranged at the top of the box body, a mounting hole is formed in the box cover, an L-shaped connecting rod penetrates through the mounting hole and comprises a vertical rod section and a horizontal rod section, a hook is arranged at the bottom of the vertical rod section, a hanging ring matched with the hook is arranged on the second filter screen, and the horizontal rod section and the box cover are in blocking fit in the vertical direction.
Has the advantages that: on the one hand, the installation and the replacement of the second filter screen are facilitated, and on the other hand, the L-shaped connecting rod and the box cover stop are also facilitated for the stability of the second filter screen.
Furthermore, a liquid level detection meter is arranged at a position above the second filter screen in the filter box, the liquid level detection meter is in communication connection with the controller, an overflow gap is formed in the position, between the liquid level detection meter and the second filter screen, of the filter box, the overflow gap is connected into a sewage pipe network through an overflow pipe, an electric stop valve is arranged on the overflow pipe, and the controller is in control connection with the electric stop valve to control the electric stop valve to be opened when a liquid level signal detected by the liquid level detection meter is received.
Has the advantages that: whether the second filter screen takes place to block up is convenient for judge on the one hand, and on the other hand also can in time discharge the sewage that overflows in the sewage pipe network through the detection of level detection meter in time, avoids overflowing subaerial.
Furthermore, the breeding frame is detachably assembled in the sewage separation tank in a hooking mode.
Has the advantages that: the cultivation frame is convenient to install and replace.
Furthermore, a heater is arranged in the gas-isolating cover, and the controller is in control connection with the heater to control the heater to be turned on.
Has the advantages that: the heater can heat the space in the sewage separation tank, so that the active organic matters in the cultivation frame are at the most suitable living temperature, and the treatment effect on the domestic sewage is improved.
Drawings
FIG. 1 is a schematic structural view of a building water supply and drainage collection system of the present invention;
FIG. 2 is a schematic view of the installation structure of the filter box at the box cover of the filter box in the building water supply and drainage collection system of the present invention;
fig. 3 is the installation schematic diagram of the water-collecting shell in the water supply and drainage collection system of the utility model.
Description of reference numerals: 1-a rainwater gathering tank, 2-a rainwater filtering tank, 3-a rainwater processing tank, 4-a sewage separating tank, 5-a sewage biological processing tank, 6-a water storage tank, 7-a supporting vertical plate, 8-a water gathering shell, 9-a water gathering pipe, 10-a horizontal plate, 11-a first filter screen, 12-a threaded rod, 13-a nut, 14-a water conveying pipe, 15-a house building, 16-a liquid level detector, 17-a second filter screen, 18-an overflow pipe, 19-an electric stop valve, 20-a funnel, 21-a horizontal channel, 22-a stop block, 23-an electric push rod, 24-a reagent inlet, 25-an air isolating cover, 26-a cultivation frame, 27-an anaerobic biological processing area, 28-an aerobic biological processing area and 29-a water pumping pipe, 30-a box cover, 31-a sewage discharge pipe, 32-a hook, 33-a hanging ring, 34-a heater and 35-an L-shaped connecting rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses a concrete embodiment of building plumbing collection system:
as shown in fig. 1, the building water supply and drainage collection system comprises a rainwater collecting tank 1, a rainwater filtering tank 2, a rainwater treatment tank 3, a sewage separation tank 4, a sewage biological treatment tank 5, a water storage tank 6, a reagent adding assembly and a controller.
Specifically, rainwater gathers pond 1 and sets up the top at housing construction 15, including being used for installing the support riser 7 in four angle departments in housing construction 15 top, the water-collecting shell of setting on supporting riser 7, releasable connection is at the first filter screen 11 of water-collecting shell bottom, the passageway that supplies the rainwater to flow has on the water-collecting shell, be close to housing construction 15 and seted up the rain outlet on the support riser 7 of the outer wall face, rain outlet department is connected with raceway 14, raceway 14 passes through support piece and fixes on housing construction 15's the outer wall face. Referring to fig. 3, in this embodiment, the water collecting shell includes a water collecting shell 8 in an arc pan shape and a water collecting pipe 9 connected to the bottom of the water collecting shell 8, and the water collecting shell 8 is in a closed shape from top to bottom, so that rainwater is conveniently collected and is not easily splashed to the outside. Space in the water collecting pipe 9 forms the passageway that supplies the rainwater to flow, and a horizontal plate 10 has been welded respectively to the radial both sides of water collecting pipe 9, is equipped with the perforation that runs through self on the horizontal plate 10, and fixedly connected with is used for passing fenestrate threaded rod 12 on the first filter screen 11, and threaded rod 12 passes the perforation and is in the same place with horizontal plate 10 removable fixation through nut 13.
The rainwater filtering tank 2 is arranged below the ground and comprises a filtering box and a second filtering screen 17 which is detachably assembled in the filtering box. Wherein, the rose box includes the box and installs the case lid 30 at the box top, and raceway 14 passes case lid 30 and stretches into in the box. The side position department at raceway 14 is equipped with the mounting hole on case lid 30, wears to be equipped with L shape connecting rod 35 in the mounting hole, and L shape connecting rod 35 includes vertical pole section and horizontal pole section, and the bottom of vertical pole section is equipped with couple 32, is equipped with on the second filter screen 17 with couple 32 hook complex link 33. As shown in fig. 2, the vertical rod section of the L-shaped connecting rod 35 passes through the mounting hole, and the hook 32 is in hooking engagement with the hanging ring 33, thereby suspending the second filter 17 in the cabinet, and the horizontal rod section of the L-shaped connecting rod 35 is in blocking engagement with the cabinet cover 30 in the up-down direction, thereby maintaining stability when the second filter 17 is suspended.
A liquid level detecting meter 16 is arranged in the filter box at a position above the second filter screen 17, and the liquid level detecting meter 16 is in communication connection with a controller (not shown in the figure). The filtering tank is provided with an overflow port at a position between the liquid level detecting meter 16 and the second filter screen 17, and the overflow port is connected to a sewage pipe network through an overflow pipe 18. Be equipped with electronic stop valve 19 on the overflow pipe 18, controller and electronic stop valve 19 control connection are in order to control electronic stop valve 19 and open when receiving the liquid level signal that level detection meter 16 detected, are convenient for judge whether second filter screen 17 takes place to block up on the one hand, and on the other hand also can in time discharge the sewage that overflows in the sewage pipe network through the detection of level detection meter 16 in time, avoid overflowing subaerial.
The rainwater treatment tank 3 is arranged below the ground and positioned beside the rainwater filtering tank 2 and is communicated with the filtering box through a water filtering pipe. The reagent adding assembly is arranged above the rainwater treatment pool 3 and comprises a funnel 20 used for containing a purifying reagent and a horizontal channel 21 arranged at the lower end of the funnel 20 and communicated with the space in the funnel 20, the horizontal channel 21 is provided with a reagent inlet 24 communicated with the rainwater treatment pool 3, and the position where the funnel 20 is communicated with the horizontal channel 21 and the reagent inlet 24 are arranged at intervals. A stop block 22 and an electric push rod 23 for driving the stop block 22 to move back and forth are oppositely arranged in the horizontal channel 21, and the controller is in control connection with the electric push rod 23. The stopper 22 abuts against one end of the horizontal passage 21 at the initial position, and the fixed end of the electric push rod 23 abuts against the other end of the horizontal passage 21. The funnel 20 communicates with the horizontal channel 21 to allow the decontaminating agent to enter the horizontal channel 21. The stopper 22 gradually blocks the opening at the lower end of the funnel and pushes the purifying reagent dropped in the horizontal channel 21 toward the reagent inlet 24 when moving toward the fixed end of the electric push rod 23, thereby dropping into the rainwater treatment tank 3. In this example, a flocculant was used as the purification agent. It should be noted that when the stopper 22 is moved away from the reagent inlet, the detergent reagent in the funnel 20 will not fall into the space of the horizontal channel at the left end of the stopper 22.
The sewage separation tank 4 is provided under the building 15 and communicates with the facilities for producing domestic sewage in the building 15 through the sewage discharge pipe 31. A cultivation frame filled with active organic matters is placed in the sewage separation tank 4 in a hooking mode, as shown in figure 1. Maggots are used as active organic matters for decomposing excrement carried in domestic sewage by silkworm food, and in order to prevent irritant gas generated in the sewage separation tank 4 from floating into the house building 15, a gas-isolating cover 25 for preventing the irritant odor in the sewage separation tank 4 from leaking outside is detachably assembled at the top of the sewage separation tank 4. A heater 34 is arranged in the air-isolating cover 25, the controller is in control connection with the heater 34 to control the heater 34 to be started, the heater 34 is heated to the survival temperature suitable for maggots, the activity of the maggots is improved, and the excrement treatment effect is further improved. The sewage biological treatment tank 5 is communicated with the sewage separation tank 4 and is divided into an anaerobic biological treatment area 27 and an aerobic biological treatment area 28, the aerobic biological treatment area 28 is provided with an aeration device, and a stirring shaft 19 is arranged in the anaerobic biological treatment area 27 in a rotating mode so as to fully carry out biodegradation treatment on domestic sewage in the biological treatment tank in a biological treatment mode, so that the biological treatment tank is the prior art and is not described in detail herein.
The water storage tank 6 is communicated with the sewage biological treatment tank 5 and is communicated with the rainwater treatment tank 3 for storing the purified water. A water pumping pipe 29 is arranged in the water storage tank 6, and the end part of the water pumping pipe 29 extends out of the ground for connecting with water utilization equipment. The water pump is installed on the water pumping pipe to pump the water in the water storage tank to equipment needing water, such as a spray head of a garden in a residential area, water for a toilet in a residential room and the like.
The utility model discloses a building plumbing collection system carries out double filtration to the rainwater through rainwater gathering tank and rainwater filtering ponds, through controller control electric putter, realizes adding purifying agent in the rainwater treatment pond, carries out purification treatment to the rainwater after the secondary filtration and stores in the tank, effectively handles and utilizes the rainwater; meanwhile, for the domestic sewage of residents, the excrement in the sewage is treated and decomposed by using the culture frame with active organic matters, and the organic matters rich in the domestic sewage are further removed by using the anaerobic biological treatment method and the aerobic biological treatment method, and finally, the domestic sewage is stored in the water storage tank. The stored rainwater can enter the equipment needing water through the water supply pipe, so that the water can be recycled. In the practical application process, the accessible sets up building plumbing collection system and comes to carry out purification treatment and collect the recycle to rainwater and domestic sewage, and effective water economy resource reduces sewage treatment plant's pressure, reduces running water pressure.
In other embodiments, the water-collecting shell can also adopt a funnel-shaped structure, and the water-collecting shell is conical.
In other embodiments, the material of the water pipe is hard enough to resist large impact, and the buffer plate may not be provided.
In other embodiments, the liquid level detection meter may not be provided, and the cover may be manually opened periodically to detect a blockage on the second filter.
In other embodiments, the heater may not be provided when the ambient temperature is already suitable for living the active organic compounds.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. A building plumbing collection system, comprising:
the rainwater collecting pool comprises supporting vertical plates arranged at four corners of the top of a house building, a rainwater collecting shell arranged on the supporting vertical plates, and a first filter screen detachably connected to the bottom of the rainwater collecting shell, wherein the rainwater collecting shell is provided with a channel for rainwater to flow, the supporting vertical plates close to the outer wall surface of the house building are provided with rainwater discharge ports, and the rainwater discharge ports are connected with water delivery pipes which are fixed on the outer wall surface of the house building through supporting pieces;
the rainwater filtering tank is arranged below the ground, is communicated with the water conveying pipe, and comprises a filtering box and a second filtering net which is detachably assembled in the filtering box;
the rainwater treatment tank is arranged below the ground and beside the rainwater filtering tank and is communicated with the filtering box through a water filtering pipe;
the reagent adding assembly is arranged above the rainwater treatment pool, and comprises a funnel for containing a purifying reagent, and a horizontal channel which is arranged at the lower end of the funnel and is communicated with the space in the funnel, wherein the horizontal channel is provided with a reagent inlet communicated with the rainwater treatment pool, the position of the funnel communicated with the horizontal channel is arranged at intervals with the reagent inlet, a stop block which is arranged oppositely and an electric push rod for driving the stop block to move back and forth are arranged in the horizontal channel, the stop block is abutted against one end of the horizontal channel when in an initial position, the fixed end of the electric push rod is abutted against the other end of the horizontal channel, the funnel is communicated with the horizontal channel so that the purifying reagent enters the horizontal channel, and the stop block gradually plugs an opening at the lower end of the funnel and pushes the purifying reagent falling into the reagent inlet when moving towards the direction of the fixed end of the electric push rod;
the sewage separation tank is arranged below the house building and is communicated with equipment for producing domestic sewage in the house building through a sewage discharge pipe, a culture frame filled with active organic matters is placed in the sewage separation tank, the active organic matters are used for decomposing excrement carried in the domestic sewage through silkworm food, and the top of the sewage separation tank is detachably provided with an air isolating cover for preventing pungent smell in the sewage separation tank from leaking;
the sewage biological treatment tank is communicated with the sewage separation tank, comprises an anaerobic biological treatment area and an aerobic biological treatment area and is used for carrying out biological treatment on sewage;
the water storage tank is communicated with the biological sewage treatment tank and the rainwater treatment tank, a water pumping pipe is arranged in the water storage tank, and the end part of the water pumping pipe extends out of the ground to be connected with water using equipment;
and the controller is in control connection with the electric push rod to realize the extension and retraction of the electric push rod.
2. The building water supply and drainage collection system of claim 1, wherein the water collection shell comprises a water collection shell in the shape of an arc pot body and a water collection pipe connected to the bottom of the water collection shell, the water collection pipe forms a channel for rainwater to flow, two horizontal plates are welded to two radial sides of the water collection pipe respectively, a through hole penetrating through the horizontal plates is formed in each horizontal plate, a threaded rod for penetrating through the through hole is fixedly connected to the first filter screen, and the threaded rod is detachably fixed with the horizontal plates through nuts.
3. The system as claimed in claim 1, wherein the water pipe comprises a vertical pipe section parallel to the building and a horizontal pipe section parallel to the ground, and a buffer plate is disposed at the joint of the vertical pipe section and the horizontal pipe section.
4. The building water supply and drainage collection system according to any one of claims 1 to 3, wherein the filter box comprises a box body and a box cover mounted on the top of the box body, the box cover is provided with a mounting hole, an L-shaped connecting rod penetrates through the mounting hole, the L-shaped connecting rod comprises a vertical rod section and a horizontal rod section, a hook is arranged at the bottom of the vertical rod section, a hanging ring matched with the hook is arranged on the second filter screen, and the horizontal rod section and the box cover are in blocking fit in the vertical direction.
5. A building water supply and drainage collection system according to any one of claims 1 to 3, wherein a liquid level detector is provided in the filter tank at a position above the second filter, the liquid level detector is in communication with the controller, the filter tank is provided with an overflow port at a position between the liquid level detector and the second filter, the overflow port is connected to a sewer network through an overflow pipe, the overflow pipe is provided with an electric stop valve, and the controller is in control connection with the electric stop valve to control the electric stop valve to open when receiving a liquid level signal detected by the liquid level detector.
6. The building plumbing collection system of any one of claims 1-3, wherein the farming frame is detachably mounted in the wastewater separation tank by hooking.
7. The building water supply and drainage collection system as claimed in any one of claims 1-3, wherein a heater is arranged in the air-proof hood, and the controller is in control connection with the heater to control the heater to be turned on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120800135.1U CN214612083U (en) | 2021-04-19 | 2021-04-19 | Building water supply and drainage collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120800135.1U CN214612083U (en) | 2021-04-19 | 2021-04-19 | Building water supply and drainage collection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214612083U true CN214612083U (en) | 2021-11-05 |
Family
ID=78403552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120800135.1U Active CN214612083U (en) | 2021-04-19 | 2021-04-19 | Building water supply and drainage collection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214612083U (en) |
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2021
- 2021-04-19 CN CN202120800135.1U patent/CN214612083U/en active Active
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