CN221001282U - Rainwater recycling and discharging system with multiple water outlets - Google Patents
Rainwater recycling and discharging system with multiple water outlets Download PDFInfo
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- CN221001282U CN221001282U CN202322687325.9U CN202322687325U CN221001282U CN 221001282 U CN221001282 U CN 221001282U CN 202322687325 U CN202322687325 U CN 202322687325U CN 221001282 U CN221001282 U CN 221001282U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 188
- 238000004064 recycling Methods 0.000 title claims abstract description 38
- 238000007599 discharging Methods 0.000 title abstract description 36
- 239000002699 waste material Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000011084 recovery Methods 0.000 claims description 8
- 239000010813 municipal solid waste Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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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
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Abstract
The application discloses a rainwater recycling and discharging system with multiple water outlets, which is characterized by comprising the following components: initial stage rainwater collecting tank, middle water conservancy diversion pond, self-discharge pond, wherein, middle water conservancy diversion pond is provided with waste filtering device, still includes the elevation from low to high: the first water passing hole, the second water passing hole and the third water passing hole; after passing through the waste filter device, the stormwater is configured to pass through one of three flow paths: a first flow path through which rainwater enters the initial rainwater collection tank for storage and is configured to be pumped to the water treatment system through rainwater reuse water; a second flow path through which rainwater passes and enters the self-flowing discharge pool; at this time, the third water passing hole is closed; a third flow path through which rainwater passes and configured to be discharged outside the plant by being boosted by the rainwater pump; at this time, the second water passing hole is closed. The application can realize the purposes of occupying less land, not discharging the dirty rainwater in the initial stage, saving water resources and energy and reducing consumption of the rainwater recycling and discharging system.
Description
Technical Field
The application relates to the field of rainwater collection and utilization, in particular to a rainwater recycling and discharging system with multiple water outlets.
Background
Along with the continuous improvement of the current requirements of environmental protection, water resource saving, energy saving and consumption reduction of the power plant, a series of problems of effective collection, storage, recycling, self-flowing energy saving emission, pressure flow emission and the like of rainwater in a factory area are solved uniformly, so that the method has urgent demands and important significance.
According to the current situation that the requirements of environmental protection on rainwater discharge are stricter, the rainwater runoff pollution in the factory must be effectively controlled, and the early-stage polluted rainwater is prevented from being discharged into an external surface water system, so that the ecological environment is influenced. Therefore, an initial rainwater collecting pool is required to be built in the factory.
In addition, the rainwater resource is fully utilized, so that the external water supply quantity of the power plant can be effectively reduced, the water resource is saved, and the water taking cost of the power plant is reduced.
For a medium-sized and large-sized power plant, the occupied area is large under the general condition, the rainwater volume in the summer rainwater season is very large, and the rainwater pump power is high, so that the system belongs to high-power equipment of the power plant. For example, 2 1000MW units in eastern China, and the total power of the rainwater pump is about 1000kW. If the running frequency of the rainwater pump is reduced, the power consumption of the power plant can be reduced, and the energy-saving effect is obvious. Therefore, for a power plant in which the plant area rainwater at the low water level is provided with the gravity drainage condition, but the plant area rainwater at the high water level cannot be drained automatically, the favorable condition of the low water level of the rainwater drainage point is fully utilized, and the plant area rainwater is drained automatically to the outside of the plant.
The current rainwater recycling and discharging system for the power plant mainly comprises a maintenance gate, a water collecting tank, a trash rack, a rainwater pump, a pressure flow drain pipe, a rainwater recycling water pump and the like, as shown in fig. 1. When the rainwater amount is smaller than or equal to the rainwater recovery water pump flow, the rainwater in the water collecting tank is boosted by the rainwater recovery water pump and discharged to the water treatment system for recycling; when the rainwater amount is larger than the rainwater recovery water pump flow, the water level in the water collecting tank continuously rises, when the water level rises to the set water level, the rainwater pump is started, the redundant rainwater is discharged to an external discharge point through the rainwater pump in a boosting mode, and when the water level in the water collecting tank falls to the set water level, the rainwater pump stops pumping. After the water level in the water collecting tank rises to the set water level, the rainwater pump directly discharges the initial dirty rainwater in the water collecting tank to the outside of the plant, so that the quality of surface water outside the plant is affected. For a power plant in which the rainwater discharge point is at a low water level and the plant rainwater cannot be discharged automatically, the pressure flow discharge is generally only set, and the automatic flow drain pipe and the pressure flow drain pipe are rarely set at the same time, so that the energy conservation and consumption reduction of the power plant are not facilitated.
In the rainwater recycling and discharging system designed at present, the factory site condition that the factory site rainwater can not be discharged automatically when the water level of the rainwater discharging point is low is aimed at the factory site rainwater which is discharged automatically when the water level of the rainwater discharging point is high. Most rainwater is collected through a factory rainwater pipe network and then is directly discharged into a rainwater pump house, then the excessive rainwater which cannot be recycled is discharged to the outside of the factory through a rainwater lifting pump, a plurality of water outlets for self-flowing and pressure flowing are rarely arranged, and an independent initial rainwater collecting tank cannot be arranged.
According to the rainwater recycling and discharging system, rainwater can be prevented from being discharged only under the conditions that the rainwater amount is small, the water level of a rainwater pump house is low and a rainwater pump is not started, so that the initial rainwater recycling and utilizing can be realized; for the south and coastal areas, the amount of rainwater is large in summer, the initially polluted rainwater is directly discharged to the outside of a factory by a rainwater pump in a rainwater pump house, the initially polluted rainwater cannot be isolated from being discharged, and the rainwater pump still needs to be started under the condition of having a self-flowing condition, so that a large amount of electricity is consumed.
The power plant is a large household of water consumption and energy consumption, and for 2 1000MW units, the maximum fresh water consumption in summer can reach about 3500m 3/h, and the total power of the rainwater pump is about 1000kW. The rainwater is collected, stored, recycled and discharged automatically as much as possible, and the method has very important significance for environmental protection, water resource saving, energy saving and consumption reduction of the power plant.
Disclosure of Invention
The application aims to provide a rainwater recycling and discharging system with multiple water outlets, which integrates an initial rainwater collecting pool, a self-flowing discharging outlet and a pressure flow discharging outlet in a concentrated manner, optimizes the arrangement of the rainwater recycling and discharging system and reduces investment.
The application discloses a rainwater recycling and discharging system with multiple water outlets, which comprises: initial stage rainwater collecting tank, middle water conservancy diversion pond, self-discharge pond, wherein, middle water conservancy diversion pond is provided with waste filtering device, still includes the elevation from low to high: the first water passing hole, the second water passing hole and the third water passing hole;
After passing through the waste filter device, the stormwater is configured to pass through one of three flow paths:
A first flow path through which rainwater enters the initial rainwater collection tank for storage and is configured to be pumped to the water treatment system through rainwater reuse water;
A second flow path through which rainwater passes and enters the self-flowing discharge pool; at this time, the third water passing hole is closed;
a third flow path through which rainwater passes and configured to be discharged outside the plant by being boosted by the rainwater pump; at this time, the second water passing hole is closed.
In a preferred embodiment, the third flow path further comprises a rainwater pump house front pool arranged after the intermediate diversion pool, the rainwater pump house front pool being configured to provide a buffer space in front of the rainwater pump house.
In a preferred embodiment, a gate is arranged between the rainwater pump house forehearth and the rainwater pump house.
In a preferred embodiment, in the first flow path, the rainwater reclamation water pump is turned on when the rainwater reaches the first water passing hole height.
In a preferred embodiment, when the level of the rainwater is higher than the second water passing hole level but lower than the third water passing hole level, the second water passing hole is opened and the rainwater passes through the second flow path.
In a preferred embodiment, when the rainwater level is higher than the third water passing hole level, the third water passing hole is opened and rainwater flows into the third flow path.
In a preferred embodiment, the opening and closing of the second water passing hole is performed by an electric shutter.
In a preferred embodiment, the height of the first water passing holes relative to the plane of the middle diversion pond is H1 m, and the height of the second water passing holes is (H1+0.1) m; and/or
The height of the third water passing hole is (H1+0.5) m.
The application has at least the following technical effects:
(1) The system is suitable for rainwater recycling and discharging systems of power substations of 300MW and above, thermal power units and 220kV or above, and converter stations.
(2) The arrangement of the rainwater recycling and discharging system is optimized, the initial rainwater collecting pool, the self-flowing discharging port and the pressure flow discharging port are integrated in a concentrated mode, and on the premise that various functions are met, the occupied area can be saved, unified planning of a factory is facilitated, and investment can be reduced.
(3) The initial rainwater in the factory is collected and isolated, the initial dirty rainwater is prevented from being discharged outwards, the ecological environment of the external water body is polluted, and the environmental benefit is high.
(4) And the initial rainwater collecting pool is utilized to store water volume, collect initial rainwater and rainwater with small rainfall, and the initial rainwater collecting pool is treated and reused, so that water resources are saved. In addition, the external water supply quantity of the power plant is reduced, and the water taking cost of the power plant is reduced.
(5) When the self-flowing drain pipe is arranged and the water drainage has the self-flowing condition, clean superfluous rainwater is discharged outside the factory in a self-flowing mode, so that the operation of the rainwater pump is reduced, the energy is saved, the consumption is reduced, and the factory electricity consumption is reduced.
(6) And setting a middle diversion pool. The middle diversion pool drains the initial rainwater to the initial rainwater collecting pool, so that the initial dirty rainwater is not discharged, and the rainwater in the initial rainwater collecting pool is pumped to the water treatment system through the rainwater reuse water pump for treatment and then reused; after the initial rainwater collecting pool reaches the set water level, the middle diversion pool can ensure that the initial dirty rainwater in the initial rainwater collecting pool does not flow back, and the redundant rainwater is led to a self-flowing discharge pool or a rainwater pump house, and finally the redundant rainwater is discharged outside the factory. The arrangement of the middle diversion pool can solve the problem of initial rainwater pollution and can also ensure that rainwater resources are fully utilized.
The numerous technical features described in the description of the present application are distributed among the various technical solutions, which can make the description too lengthy if all possible combinations of technical features of the present application (i.e., technical solutions) are to be listed. In order to avoid this problem, the technical features disclosed in the above summary of the application, the technical features disclosed in the following embodiments and examples, and the technical features disclosed in the drawings may be freely combined with each other to constitute various new technical solutions (which should be regarded as having been described in the present specification) unless such a combination of technical features is technically impossible. For example, in one example, feature a+b+c is disclosed, in another example, feature a+b+d+e is disclosed, and features C and D are equivalent technical means that perform the same function, technically only by alternative use, and may not be adopted simultaneously, feature E may be technically combined with feature C, and then the solution of a+b+c+d should not be considered as already described because of technical impossibility, and the solution of a+b+c+e should be considered as already described.
Drawings
FIG. 1 is a schematic plan view of a stormwater recycling drainage system in accordance with a conventional style;
FIG. 2 is a schematic plan view of the rainwater recycling drain system of the present application with multiple water discharge ports;
fig. 3 is a schematic cross-sectional view of the rainwater recycling drainage system of the present application.
Detailed Description
The inventor of the application provides a novel rainwater recycling and discharging system integrating functions of initial rainwater collection, rainwater recycling, rainwater self-flowing discharging, rainwater pressure flow discharging and the like aiming at the problems that the initial dirty rainwater discharging of a power plant is difficult to control, rainwater resources are wasted, the energy consumption of a rainwater pump is high and the like, and can achieve the purposes of saving the occupied area of the rainwater recycling and discharging system, saving water resources, saving energy and reducing consumption.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be understood by those skilled in the art that the claimed application may be practiced without these specific details and with various changes and modifications from the embodiments that follow.
Terminology
Multiple water discharge ports: when the water level of the rainwater discharge point is high, the rainwater is discharged through the pressure flow drain pipe; when the water level of the rainwater discharge point is low, the rainwater is discharged through the self-flowing drain pipe, so that the purposes of energy saving and consumption reduction are achieved.
Rainwater recycling and discharging system: by means of measures such as the trash rack, the initial rainwater collecting pool, the water passing holes, the recycling water pump, the gate, the self-flowing drain pipe, the rainwater pump, the pressure flow drain pipe and the like, the rainwater system for collecting and recycling rainwater, self-flowing discharge and pressure flow discharge is realized.
The following outline of some of the innovative features of embodiments of the present application:
The rainwater recycling and discharging system of the multi-drainage port comprises: initial stage rainwater collecting tank, middle water conservancy diversion pond, self-discharge pond, wherein, middle water conservancy diversion pond is provided with waste filtering device, still includes the elevation from low to high: the first water passing hole, the second water passing hole and the third water passing hole.
After passing through the waste filter device, the stormwater is configured to pass through one of three flow paths:
A first flow path through which stormwater passes into the initial stormwater collection reservoir for storage and configured to be pumped through the stormwater reuse water to the water treatment system. In the first flow path, when the rainwater reaches the height of the first water passing hole, the rainwater recycling water pump is started.
And the second flow path is used for enabling rainwater to enter the self-flowing discharge pool through the second water passing holes. When the water level of the rainwater is higher than the elevation of the second water passing hole but lower than the elevation of the third water passing hole, the second water passing hole is opened, and the rainwater passes through the second flow path. In a preferred embodiment, the opening and closing of the second water passing hole is performed by an electric shutter. At this time, the third water passing hole is closed.
And a third flow path through which rainwater passes and configured to be discharged outside the plant by being boosted by the rainwater pump. When the water level of the rainwater is higher than the elevation of the third water passing hole, the third water passing hole is opened, and the rainwater flows into the third flow path. At this time, the second water passing hole is closed.
In a preferred embodiment, in the third flow path, a rainwater pump house front pond provided after the intermediate diversion pond, the rainwater pump house front pond being configured to provide a buffer space in front of the rainwater pump house; a gate is arranged between the front pool of the rainwater pump room and the rainwater pump room.
In a preferred embodiment, the first water passing holes have a height of H1 meters relative to the plane of the intermediate baffle tank, and the second water passing holes have a height of (H1+0.1) meters, as shown in FIG. 3. The height of the third water passing hole is (H1+0.5) m.
The system setting and the corresponding technical effects of the application are as follows:
(1) A trash rack is arranged behind a rainwater inlet pipe to intercept large garbage such as plastic bags, branches, leaves and the like in rainwater, and the rainwater entering an initial rainwater collecting tank, a self-flowing discharging tank and a rainwater pump house is filtered to a certain extent.
(2) After passing through the trash rack, the rainwater enters a middle diversion pool, water flows to different water passing holes A, B and C are arranged in the middle diversion pool, the hole bottom elevations of the water passing holes B and C are higher than the hole top elevations of the water passing holes A, the initial rainwater enters an initial rainwater collecting pool through the water inlet holes A, and finally, the initial rainwater is pumped to a water treatment system through rainwater recycling water pump for treatment and then is recycled.
(3) The water passing hole B is provided with 1 electric gate, the elevation of the bottom of the water passing hole B is lower than that of the water passing hole C, when the water level of the middle diversion pool is higher than Yu Guoshui the elevation of the bottom of the water passing hole B and the water level of the water outlet point outside the factory is lower than that of the bottom of the water passing hole B, the electric gate is opened, redundant rainwater is discharged into the self-flow discharge pool, the water passing hole C does not overflow, and the rainwater is finally discharged outside the factory through the self-flow discharge pipe.
(4) When the water level of the water discharge point outside the plant is higher than the hole bottom elevation of the Yu Guoshui holes B, the electric gate is in a closed state, and as the water level of the middle diversion pool exceeds the hole bottom elevation of the water discharge hole C, the redundant rainwater is discharged into the front pool of the rainwater pump house, and finally is boosted and discharged outside the plant through the rainwater pump.
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Example 1,
The rainwater recycling and discharging system of the multi-water-outlet is shown in fig. 2, along the rainwater flow direction, the rainwater recycling and discharging system is sequentially provided with: a rainwater inlet pipe; a trash rack; a middle diversion pool; a water passing hole A, an initial rainwater collecting tank and a rainwater recycling water pump; the water passing hole B, the electric gate, the self-flowing discharging pool and the self-flowing water discharging pipe; water passing hole C, rainwater pump house forebay, access gate, rainwater pump, pressure flow drain pipe etc..
Initial rainwater collection function: the trash rack behind the rainwater inlet pipe entraps large garbage such as plastic bags, branch leaves and the like in the rainwater; because the hole bottom elevation of the water passing hole B and the water passing hole C are higher than the hole top elevation of the water passing hole A, the initial rainwater passing through the trash rack enters the initial rainwater collecting tank in the middle diversion tank through the water passing hole A, after the water level in the initial rainwater collecting tank rises to the hole top elevation of the water passing hole A, the initial dirty rainwater is stored in the initial rainwater collecting tank and pumped to the water treatment system for treatment and recycling through the rainwater reuse water, and the water passing hole B and the water passing hole C are not excessively flowed. See flow ① in fig. 2 and 3 for details.
Self-flow drainage function: when the water level in the middle diversion pool rises to the hole bottom elevation of the water passing hole B, if the water level of the water discharging point outside the factory is lower than the hole bottom elevation of the water passing hole B, the electric gate of the water passing hole B can be opened, at the moment, clean superfluous rainwater is discharged into the self-flow discharging pool, the water passing hole C is not overflowed, and the rainwater is finally discharged outside the factory through the self-flow discharging pipe. See flow ② in fig. 2 and 3 for details.
Pressure flow drainage function: after the water level in the middle diversion pond and the initial rainwater collection pond rises to the hole bottom elevation of the water passing hole B, if the water level of the water discharging point outside the factory is higher than the hole bottom elevation of the Yu Guoshui hole B, the electric gate of the water passing hole B is kept closed, the water level in the middle diversion pond and the initial rainwater collection pond continuously rises at the moment, and when the water level in the middle diversion pond rises to the hole bottom elevation of the water passing hole C, clean redundant rainwater is discharged into the front pond of the rainwater pump house at the moment and finally is boosted and discharged outside the factory through the rainwater pump. See flow ③ in fig. 2 and 3 for details.
Prevent initial rainwater backward flow function: through the different elevation setting of water hole A, water hole B and water hole C's hole bottom elevation is all higher than water hole A Kong Dingbiao height, fully guarantees that initial stage rainwater is at first by the complete water conservancy diversion to initial stage rainwater collecting tank and not flow to self-discharge pond and rainwater pump house. When the surplus rainwater after the initial rainwater collection is discharged, the water absorption and water passing holes A of the rainwater recycling water pump are in a submerged state, so that the dirty initial rainwater in the initial rainwater collection tank can be fully ensured to be stored in the water tank all the time and cannot flow back through the water passing holes A.
It should be noted that in the present patent application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. In the present patent application, if it is mentioned that an action is performed according to an element, it means that the action is performed at least according to the element, and two cases are included: the act is performed solely on the basis of the element and is performed on the basis of the element and other elements. Multiple, etc. expressions include 2, 2 times, 2, and 2 or more, 2 or more times, 2 or more.
This specification includes combinations of the various embodiments described herein. Separate references to "one embodiment" or a particular embodiment, etc., do not necessarily refer to the same embodiment; however, unless indicated as mutually exclusive or as would be apparent to one of skill in the art, the embodiments are not mutually exclusive. It should be noted that the term "or" is used in this specification in a non-exclusive sense unless the context clearly indicates otherwise or requires otherwise.
All references mentioned in this disclosure are to be considered as being included in the disclosure of the application in its entirety so that modifications may be made as necessary. Further, it is understood that various changes or modifications of the present application may be made by those skilled in the art after reading the above disclosure, and such equivalents are intended to fall within the scope of the application as claimed.
Claims (8)
1. A rainwater recycling and draining system with multiple water outlets, comprising: initial stage rainwater collecting tank, middle water conservancy diversion pond, self-discharge pond, wherein, middle water conservancy diversion pond is provided with waste filtering device, still includes the elevation from low to high: the first water passing hole, the second water passing hole and the third water passing hole;
After passing through the waste filter device, the stormwater is configured to pass through one of three flow paths:
A first flow path through which rainwater enters the initial rainwater collection tank for storage and is configured to be pumped to the water treatment system through rainwater reuse water;
A second flow path through which rainwater passes and enters the self-flowing discharge pool; at this time, the third water passing hole is closed;
a third flow path through which rainwater passes and configured to be discharged outside the plant by being boosted by the rainwater pump; at this time, the second water passing hole is closed.
2. The stormwater recycling drainage system of claim 1, further comprising a stormwater pump house front disposed after the intermediate diversion pond in the third flow path, the stormwater pump house front being configured to provide a buffer space in front of the stormwater pump house.
3. The rainwater recycling drain system according to claim 2, wherein a gate is provided between the rainwater pump house forehearth and the rainwater pump house.
4. The stormwater recovery drainage system of claim 1, wherein in the first flow path, the stormwater recovery water pump is turned on when stormwater reaches the first water aperture height.
5. The stormwater recovery drainage system of claim 1, wherein the second water passage is open when the stormwater level is above the second water passage level but below the third water passage level.
6. The stormwater recovery drainage system as claimed in claim 1, wherein the third water passing hole is opened when the stormwater level is higher than the third water passing hole level, and the stormwater flows into the third flow path.
7. The rainwater recycling drain system according to claim 1, wherein the opening and closing of the second water passing hole is performed by an electric shutter.
8. The stormwater recovery drainage system as claimed in claim 1, wherein the first water passing holes have a height of H1 m relative to the plane of the intermediate diversion basin, and the second water passing holes have a height of (h1+0.1) m; and/or
The height of the third water passing hole is (H1+0.5) m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322687325.9U CN221001282U (en) | 2023-10-08 | 2023-10-08 | Rainwater recycling and discharging system with multiple water outlets |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322687325.9U CN221001282U (en) | 2023-10-08 | 2023-10-08 | Rainwater recycling and discharging system with multiple water outlets |
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| CN221001282U true CN221001282U (en) | 2024-05-24 |
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| CN202322687325.9U Active CN221001282U (en) | 2023-10-08 | 2023-10-08 | Rainwater recycling and discharging system with multiple water outlets |
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2023
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