Sponge city rainwater recycling system

Abstract

The utility model belongs to the technical field of rainwater recycling and application, and particularly discloses a sponge city rainwater recycling system which comprises a concrete reservoir, a settling tank with a cleaning opening, a water storage tank with a water outlet, a water pump, a water outlet pipe, a water conveying pipe, a filter pipe, a water guide pipe, a filter screen, an overflow water outlet pipe and the like. The sponge city rainwater recovery processing system has the advantages that the sponge city rainwater recovery processing system is suitable for purifying and collecting rainwater collected in a rainwater reservoir, the problem that a filter screen is blocked in the purifying and collecting process is solved, and the requirement for rapid rainwater collection is met; 2, a PLC (Programmable Logic Controller) is combined to realize automatic regular purification collection and backwashing operation, so that management and control are facilitated, and remote control is realized; and 3, the working state of the filter screen can be observed through the window, corresponding manual control backwashing is realized, and the functions are rich.

Description

Technical Field

[0001] This utility model belongs to the field of rainwater harvesting application technology, specifically relating to a rainwater harvesting and treatment system for sponge cities. Background Technology

[0002] For cities, heavy rainfall in a short period of time can put pressure on urban drainage networks, often leading to urban flooding.

[0003] The concept of a sponge city is an innovative urban development philosophy and approach, aiming to make cities like sponges, possessing good "resilience" in adapting to environmental changes and coping with natural disasters caused by rainwater. Simply put, it involves a series of planning, design, and construction methods to achieve the natural accumulation, infiltration, and purification of rainwater, thereby effectively managing urban water resources and solving the problem of urban flooding.

[0004] Chinese Patent No. 202021293695.4 and Publication No. CN212926353U disclose a rainwater harvesting and treatment system for sponge cities. The system includes a rainwater collection pipe located below the ground surface. A drainage pipe is located at the end of the rainwater collection pipe furthest from the ground surface. The other end of the drainage pipe is connected sequentially to a storage tank and a clear water tank. The storage tank is equipped with a sludge detection device and a sludge cleaning device. Sludge is washed to the bottom of the storage tank by rainwater. The sludge detection device can detect the sludge deposition, and then the sludge cleaning device can be controlled to remove the sludge, thereby solving the problem of decreased storage tank capacity and maintaining the normal water storage capacity of the storage tank.

[0005] The rainwater harvesting and treatment system described above for sponge cities is mainly used for rainwater collection in different parts of the pipe network, but it cannot be used to purify and treat the rainwater collected in rainwater storage tanks.

[0006] Therefore, based on the above problems, this utility model provides a rainwater recycling and treatment system for sponge cities. Utility Model Content

[0007] Purpose of the utility model: The purpose of this utility model is to provide a rainwater recycling and treatment system for sponge cities, which solves the problem of purification and collection of rainwater collected in rainwater storage tanks in the existing background technology.

[0008] Technical Solution: The sponge city rainwater recycling and treatment system of this utility model includes a concrete water storage tank, a sedimentation tank with a cleaning port, and a water storage tank with an outlet. A water pump is installed on one side of the concrete water storage tank. A water outlet pipe connected to the water pump is installed on the concrete water storage tank. A water delivery pipe is installed on the water pump. A filter pipe is installed at one end of the water delivery pipe. A water guide pipe connected to the filter pipe is installed on the sedimentation tank with a cleaning port. A filter screen is installed inside the filter pipe. An overflow outlet pipe connected to the upper part of the sedimentation tank with a cleaning port is installed on the water storage tank with an outlet.

[0009] The sponge city rainwater recycling and treatment system of this technical solution further includes a backwash outlet pipe installed on a sedimentation tank with a cleaning port, a backwash pump connected to the backwash outlet pipe, a backwash water inlet and a backwash water outlet installed on a filter pipe and located at the front end of the filter screen, a backwash water conduit connected at both ends to the backwash pump and the backwash water inlet respectively, a backwash water outlet pipe connected to the backwash water outlet, and a water supply pipe valve and a water guide pipe valve respectively installed on the water supply pipe and the water guide pipe.

[0010] The sponge city rainwater recycling and treatment system of this technical solution also includes a set of grooved limiting plates installed on the upper inner wall of the concrete storage tank, a filter plate with limiting convex strips used in conjunction with the grooved limiting plates, and a horizontal L-shaped ear plate installed on the filter plate with limiting convex strips.

[0011] The sponge city rainwater recycling and treatment system of this technical solution also includes a PLC controller connected to a water pump, a backwash pump, a water supply pipe valve, and a water guide pipe valve respectively; wherein, the water supply pipe valve and the water guide pipe valve are solenoid valves.

[0012] The sponge city rainwater recycling and treatment system of this technical solution also includes a viewing window installed on the filter pipe.

[0013] Compared with existing technologies, the beneficial effects of this sponge city rainwater harvesting and treatment system are as follows: 1. It is suitable for purifying and collecting rainwater in rainwater storage tanks, while solving the problem of filter clogging during purification and collection, and meeting the requirements for rapid rainwater collection; 2. Combined with a PLC controller, it realizes automated timed purification and collection and backwashing operations, which is convenient for management and remote control; 3. Through the viewing window, the working status of the filter can be observed, and corresponding manual control backwashing can be realized, providing rich functionality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the main structure of the sponge city rainwater harvesting and treatment system of this utility model;

[0016] The numbers in the diagram are as follows: 100-Concrete water storage tank, 101-Water pump, 102-Outlet pipe, 103-Filter plate with limiting protrusions, 104-Horizontal L-shaped ear plate, 105-Water supply pipe, 106-Water supply pipe valve, 107-Water guide pipe, 108-Filter pipe, 109-Filter screen, 110-Sedimentation tank with cleaning port, 111-Water storage tank with outlet, 112-Overflow outlet pipe, 113-Backwash pump, 114-Backwash outlet pipe, 115-Backwash water conduit, 116-Backwash water inlet, 117-Backwash water outlet, 118-Backwash water outlet pipe, 119-Water guide pipe valve, 120-Viewing window, 121-PLC controller, 122-Limiting plate with through groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be noted that the terms "top," "bottom," "one side," "the other side," "front," "back," "middle part," "inner," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] like Figure 1 The sponge city rainwater harvesting and treatment system shown includes a concrete storage tank 100, a sedimentation tank 110 with a washing outlet, and a storage tank 111 with an outlet.

[0022] A water pump 101 is installed on one side of the concrete water storage tank 100.

[0023] A water outlet pipe 102 connected to a water pump 101 is installed on the concrete water storage tank 100.

[0024] The water pump 101 is equipped with a water delivery pipe 105.

[0025] A filter pipe 108 is installed at one end of the water supply pipe 105.

[0026] A water guide pipe 107 connected to the filter pipe 108 is installed on the sedimentation tank 110 with a cleaning port.

[0027] A filter screen 109 is installed inside the filter tube 108.

[0028] The water storage tank 111 with a water outlet is equipped with an overflow water outlet pipe 112 that is connected to the upper part of the sedimentation tank 110 with a cleaning port.

[0029] The working principle is as follows: After rainwater enters the concrete storage tank 100, the water pump 101 is started. At this time, the rainwater enters the sedimentation tank 110 with a cleaning port through the outlet pipe 102, the water conveying pipe 105, the filter pipe 108, and the water guide pipe 107. After sedimentation in the sedimentation tank 110 with a cleaning port, the rainwater enters the storage tank 111 with an outlet through the overflow outlet pipe 112 for collection.

[0030] Example 2 (Manually Controlled Backwashing)

[0031] Based on Embodiment 1, the sponge city rainwater recycling and treatment system further includes a backwash outlet pipe 114 installed on a sedimentation tank 110 with a cleaning port, a backwash pump 113 connected to the backwash outlet pipe 114, a backwash water inlet 116 and a backwash water outlet 117 installed on a filter pipe 108 and located at the front end of the filter screen 109, a backwash water conduit 115 connected at both ends to the backwash pump 113 and the backwash water inlet 116 respectively, a backwash water outlet pipe 118 connected to the backwash water outlet 117, and a water supply pipe valve 106 and a water guide pipe valve 119 respectively installed on the water supply pipe 105 and the water guide pipe 107.

[0032] When backwashing is required, turn off the water pump 101, close the water supply pipe valve 106, close the water guide pipe valve 119, and turn on the backwash pump 113. At this time, the flushing water enters the filter pipe 108 through the backwash outlet pipe 114, the backwash water conduit 115, and the backwash water inlet 116 to flush the foreign objects on the surface of the filter screen 109. At the same time, the flushing water is discharged through the backwash water outlet 117 and the backwash water outlet pipe 118.

[0033] After backwashing is completed, open the water supply pipe valve 106, open the water guide pipe valve 119, close the backwash pump 113, and start the water pump 101 to enter the working state of Example 1.

[0034] Example 3

[0035] Based on Embodiment 1, the sponge city rainwater recycling and treatment system also includes a set of grooved limiting plates 122 installed on the upper inner wall of the concrete storage tank 100, a limiting convex strip filter plate 103 used in conjunction with the grooved limiting plates 122, and a horizontal L-shaped ear plate 104 installed on the limiting convex strip filter plate 103.

[0036] When local rainwater enters the concrete storage tank 100, the filter plate 103 with limiting protrusions can filter the rainwater to a certain extent and prevent larger foreign objects from entering the concrete storage tank 100. At the same time, after the rainfall ends, the filter plate 103 with limiting protrusions can be moved away by the horizontal L-shaped ear plate 104 to clean up the larger foreign objects or the sediment in the concrete storage tank 100.

[0037] Example 4 (Automated Backwashing Control)

[0038] Based on Embodiment 2, the sponge city rainwater recycling and treatment system also includes a PLC controller 121 that is connected to the water pump 101, the backwash pump 113, the water delivery pipe valve 106, and the water diversion pipe valve 119 respectively.

[0039] Among them, water supply pipe valve 106 and water guide pipe valve 119 are solenoid valves.

[0040] The working principle is as follows: PLC controller 121 pre-inputs the backwash interval time.

[0041] When the backwashing operation is started, the PLC controller 121 controls the water pump 101 to shut down, the water supply pipe valve 106 to shut down, and the water guide pipe valve 119 to shut down, while the backwash pump 113 is turned on. At this time, the flushing water enters the filter pipe 108 through the backwash outlet pipe 114, the backwash water conduit 115, and the backwash water inlet 116 to flush the foreign objects on the surface of the filter screen 109. At the same time, the flushing water is discharged through the backwash water outlet 117 and the backwash water outlet pipe 118 for treatment.

[0042] When the backwashing operation is completed, the PLC controller 121 opens the water supply pipe valve 106, opens the water guide pipe valve 119, and closes the backwash pump 113. The water pump 101 can then be started to enter the working state of Example 1.

[0043] In addition, the preferred sponge city rainwater recycling system also includes a viewing window 120 installed on the filter pipe 108, through which the status of the filter screen 109 inside the filter pipe 108 can be conveniently observed, and backwashing of foreign matter can be carried out in a timely manner. The backwashing can be manually controlled or the interval backwashing time of the PLC controller 121 can be manually adjusted.

[0044] This sponge city rainwater harvesting and treatment system is suitable for the rapid purification and collection of rainwater within a 100-meter concrete storage tank during rainwater collection.

[0045] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sponge city rainwater harvesting and treatment system, comprising a concrete storage tank (100), a sedimentation tank with a washing outlet (110), and a storage tank with an outlet (111), characterized in that: A water pump (101) is installed on one side of the concrete water storage tank (100). The concrete water storage tank (100) is equipped with a water outlet pipe (102) connected to the water pump (101). The water pump (101) is equipped with a water delivery pipe (105). A filter pipe (108) is provided at one end of the water supply pipe (105). The sedimentation tank (110) with a cleaning port is provided with a water guide pipe (107) connected to the filter pipe (108). A filter screen (109) is provided inside the filter tube (108). The water storage tank (111) with outlet is provided with an overflow outlet pipe (112) that is connected to the upper part of the sedimentation tank (110) with cleaning port.

2. The sponge city rainwater harvesting and treatment system according to claim 1, characterized in that: The sponge city rainwater recycling and treatment system also includes a backwash outlet pipe (114) installed on a sedimentation tank (110) with a cleaning port, a backwash pump (113) connected to the backwash outlet pipe (114), a backwash water inlet (116) and a backwash water outlet (117) installed on a filter pipe (108) and located at the front end of the filter screen (109), a backwash water conduit (115) connected at both ends to the backwash pump (113) and the backwash water inlet (116) respectively, a backwash water outlet pipe (118) connected to the backwash water outlet (117), and a water supply pipe valve (106) and a water guide pipe valve (119) respectively installed on the water supply pipe (105) and the water guide pipe (107).

3. The sponge city rainwater harvesting and treatment system according to claim 1 or 2, characterized in that: It also includes a set of grooved limiting plates (122) installed on the upper inner wall of the concrete water storage tank (100), a limiting convex strip filter plate (103) used in conjunction with the grooved limiting plate (122), and a horizontal L-shaped ear plate (104) installed on the limiting convex strip filter plate (103).

4. The sponge city rainwater harvesting and treatment system according to claim 2, characterized in that: The sponge city rainwater recycling and treatment system also includes a PLC controller (121) connected to the water pump (101), backwash pump (113), water delivery pipe valve (106), and water guide pipe valve (119), respectively. Among them, the water supply pipe valve (106) and the water guide pipe valve (119) are solenoid valves.

5. The sponge city rainwater harvesting and treatment system according to claim 1, characterized in that: The sponge city rainwater harvesting and treatment system also includes a viewing window (120) installed on the filter pipe (108).

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