A rainwater double filtration and infiltration recycling device for constructing a sponge city

Abstract

The application relates to the technical field of sponge cities, and particularly relates to a rainwater double-filtering and seepage recycling device for constructing a sponge city, which comprises a ground and a drainage port, and the bottom of the drainage port is provided with a filtering device, a cleaning device and a sedimentation device. The rainwater double-filtering and seepage recycling device for constructing a sponge city performs primary filtering on rainwater through a filtering well cover, intercepts large sundries in the rainwater, intercepts and filters small-particle sundries in the rainwater flowing into the inside of a filtering box through a filtering screen, collects the intercepted sundries in the inside of a sewage collecting box through a sewage outlet, and can be cleaned regularly, the rainwater filtered doubly flows into the inside of a sedimentation box, sludge in the rainwater is deposited at the bottom of the sedimentation box after sedimentation, then a water pump is started to pump the rainwater after sedimentation into the inside of a water conveying pipe through a water pumping pipe, and the rainwater flows into the inside of a water purifying tank to be purified, so that recycling can be carried out subsequently.

Description

Technical Field

[0001] This invention relates to the field of sponge city technology, specifically to a rainwater dual filtration and infiltration reuse device for constructing sponge cities. Background Technology

[0002] Sponge city is a new generation of urban concept for surface water management, referring to a city's good "resilience" in adapting to environmental changes and responding to natural disasters caused by rainwater. It follows the principle of combining natural methods with artificial measures to maximize the accumulation, infiltration, and purification of rainwater in urban areas while ensuring urban drainage and flood control safety, thus promoting rainwater resource utilization and ecological environmental protection. However, current rainwater harvesting and utilization devices in sponge cities suffer from slow collection speeds, poor purification effects, and certain hazards during utilization.

[0003] For example, Chinese Patent Publication No. CN205857343U discloses a rainwater harvesting and utilization device for sponge cities. During use, when it rains, rainwater on the ground flows downwards along the surface of low-lying green areas, passes through a concrete layer, and continues to flow downwards. Simultaneously, the concrete stabilizes the low-lying green areas, preventing soil erosion. The flowing rainwater infiltrates through infiltration pipes and flows into drainage pipes. Then, the rainwater flows through the drainage pipes into a storage tank. Finally, the rainwater in the storage tank flows into a primary rainwater filtration device, where a trap is formed. The basket intercepts larger debris in the rainwater. When the rainwater flow is slow, the debris falls into the drain under gravity. The intercepted rainwater then enters the rainwater diversion device. Because the initial rainwater is heavily polluted and flows slowly, it is discharged from the outlet under the float. When the rainwater is heavy, the float descends under the pressure of the rainwater, blocking the outlet. Simultaneously, the rainwater is filtered by the filter screen and flows into the rainwater purification device for further purification. Finally, the purified rainwater is pumped to the surface for reuse.

[0004] However, the rainwater harvesting and utilization device for sponge cities mentioned in the above application uses a sewage interception basket to intercept garbage in rainwater. After long-term use, the sewage interception basket may become clogged with dirt, thus affecting the filtration effect. Therefore, it has certain limitations.

[0005] Therefore, we urgently need to provide a rainwater dual filtration and reuse device for building sponge cities. Summary of the Invention

[0006] The purpose of this invention is to provide a dual-filtration and reuse device for rainwater infiltration in the construction of sponge cities, in order to solve the problem of the rainwater collection and utilization device for sponge cities proposed in the background art, which uses a sewage interception basket to intercept garbage in rainwater. After long-term use, the sewage interception basket may be clogged by dirt, thereby affecting the filtration effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a rainwater dual filtration and infiltration reuse device for constructing a sponge city, comprising a ground surface and a drain outlet, wherein the drain outlet is located above the ground surface, a filter device is provided at the bottom of the drain outlet, a cleaning device is provided inside the filter device, and a sedimentation device is provided on the right side of the filter device.

[0008] The filtration device includes a primary filtration unit and a secondary filtration unit.

[0009] The primary filtration unit includes a filter manhole cover, a rainwater collection pipe, and a filter box. The filter manhole cover is installed inside the drain outlet, the rainwater collection pipe is installed at the bottom of the filter manhole cover, and the filter box is fixedly connected to the right end of the rainwater collection pipe. The filter manhole cover performs primary filtration of rainwater, intercepting large debris in the rainwater and preventing large debris from entering the sedimentation device through the water supply pipe.

[0010] A further improvement is that the secondary filtration unit includes a filter screen, a drain outlet, and a sludge collection box. The filter screen is installed inside the filter box on the right side, the drain outlet is located at the bottom of the filter box, and the sludge collection box is fixedly connected to the inside of the drain outlet. The filter screen intercepts and filters small particles of debris in the rainwater flowing into the filter box. The intercepted impurities enter the sludge collection box through the drain outlet for collection. The debris in the sludge collection box can be cleaned periodically.

[0011] A further improvement is that the cleaning device includes a lifting unit and a power unit.

[0012] The lifting unit includes a limiting box, a connecting pipe, an elastic rope, and a movable box. The limiting box is fixedly connected to the right side of the front of the filter box. The connecting pipe is fixedly connected between the filter box and the limiting box. The elastic rope is fixedly connected to the center of the top wall of the limiting box. The movable box is fixedly connected to the bottom of the elastic rope. Rainwater flowing into the filter box is collected and discharged into the interior of the limiting box through the connecting pipe.

[0013] A further improvement is that the power unit includes a rotating shaft, a turbine, a driving bevel gear, and a driven bevel gear. The rotating shaft is rotatably connected to the left outer surface of the movable box via a sealed bearing. The turbine is fixedly connected to the left end of the rotating shaft. The driving bevel gear is fixedly connected to the right end of the rotating shaft. The driven bevel gear is meshed with the driving bevel gear.

[0014] A further improvement is that the cleaning device consists of two sets, which are symmetrically arranged on the front and rear sides of the filter box. Limiting grooves are provided on the front and rear sides of the filter box, and the movable box is slidably connected to the inside of the limiting grooves, thereby restricting the movable box to move vertically up and down only along the inside of the limiting grooves.

[0015] A further improvement is that a brush is rotatably connected between the two movable boxes via a sealed bearing, and the front and rear ends of the brush are respectively connected to two driven bevel gears. When the water flow converges and flows into the interior of the limiting box, the water flow washes the turbine, thereby driving the driving bevel gear to rotate, which in turn drives the driven bevel gear to rotate, thus driving the brush to rotate. This brushes off impurities inside the filter screen pores, preventing the filter screen from being clogged and affecting the filtration effect. As the water flows downward, the impact force it generates causes the movable box to move downward and stretches the elastic rope. When the elastic rope is stretched to its limit, the resulting elasticity pulls the movable box upward, thereby realizing the up-and-down movement of the brush and thoroughly cleaning the filter screen.

[0016] A further improvement is that the sedimentation device includes a sedimentation tank, a purified water tank, a water pump, a pumping pipe, a delivery pipe, and a sludge sensor. The sedimentation tank is fixedly connected to the right side of the filter tank, the purified water tank is installed on the right side of the sedimentation tank, the water pump is installed on the top of the sedimentation tank, the top of the pumping pipe is installed at the pump's inlet, and its bottom extends into the interior of the sedimentation tank. The top of the delivery pipe is installed at the pump's outlet, and its bottom extends into the interior of the purified water tank. The sludge sensor is installed on the right inner wall of the sedimentation tank, lower than the bottom of the pumping pipe. Rainwater that has undergone dual filtration flows into the sedimentation tank. After sedimentation, the sludge settles at the bottom of the sedimentation tank. Then, the water pump is started to pump the settled rainwater through the pumping pipe into the delivery pipe and into the purified water tank for purification treatment, facilitating subsequent recycling.

[0017] A further improvement is that a recycling pipe is installed on the back of the sedimentation tank and the clean water tank respectively, and a water pump is also installed on the recycling pipe. After the rainwater is purified, the water pump on the recycling pipe on the back of the clean water tank is started to pump the rainwater in the clean water tank for recycling. When the sludge inside the sedimentation tank accumulates to the height of the sludge sensor, the water pump on the recycling pipe on the back of the sedimentation tank is started to pump out the sludge for cleaning.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This rainwater dual filtration and reuse device for building sponge cities uses a filter manhole cover to perform initial filtration of rainwater, intercepting large debris in the rainwater. A filter screen then intercepts and filters small particles of debris flowing into the filter box. The intercepted impurities are collected in the sewage collection box through the sewage outlet. The debris in the box can be cleaned periodically.

[0020] 2. This rainwater dual filtration and reuse device for building sponge cities, when the water flow is concentrated and flows into the interior of the limiting box, the water flow washes the turbine, thereby driving the active bevel gear to rotate, which in turn drives the driven bevel gear to rotate, thereby driving the brush to rotate, brushing off the impurities inside the filter screen pores, preventing the filter screen from being blocked, thus affecting the filtration effect.

[0021] 3. This rainwater dual filtration and reuse device for building sponge cities has a downward flow of water. The impact force generated by the downward flow of water causes the moving box to move downward and stretches the elastic rope. When the elastic rope is stretched to its limit, the elasticity generated pulls the moving box upward, thereby realizing the up and down movement of the brush to thoroughly clean the filter screen.

[0022] 4. This rainwater dual filtration and infiltration reuse device for building sponge cities allows rainwater that has undergone dual filtration to flow into the interior of a sedimentation tank. After sedimentation, the sludge settles at the bottom of the sedimentation tank. Then, a water pump is started to pump the settled rainwater through a water pipe into the interior of a water delivery pipe and into the interior of a clean water tank for purification treatment, which facilitates subsequent recycling. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a front view structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the rear view structure of the present invention;

[0026] Figure 3 This is a side view of the filter box and sludge collection box of the present invention;

[0027] Figure 4 This is a top sectional view of the filter box and sludge collection box of the present invention;

[0028] Figure 5 This is a side cross-sectional view of the limiting box of the present invention;

[0029] Figure 6 This is a side cross-sectional view of the filter box and the limiting box of the present invention.

[0030] Figure 7 This is a cross-sectional structural schematic diagram of the precipitation device of the present invention.

[0031] In the diagram: 1. Ground; 2. Drainage outlet; 301. Filter well cover; 302. Rainwater collection pipe; 303. Filter box; 304. Filter screen; 305. Sewage outlet; 306. Sludge collection box; 401. Limit box; 402. Connecting pipe; 403. Elastic rope; 404. Moving box; 405. Rotating shaft; 406. Turbine; 407. Driving bevel gear; 408. Driven bevel gear; 409. Brush; 501. Sedimentation tank; 502. Clean water tank; 503. Water pump; 504. Pumping pipe; 505. Water delivery pipe; 506. Sludge sensor; 507. Recovery pipe. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Please see Figures 1-7 The present invention provides a technical solution:

[0035] Example 1:

[0036] A rainwater dual filtration and reuse device for constructing sponge cities includes a ground surface 1 and a drain outlet 2. The drain outlet 2 is located above the ground surface 1, and a filter device is installed at the bottom of the drain outlet 2. A sedimentation device is installed on the right side of the filter device.

[0037] The filtration device includes a primary filtration unit and a secondary filtration unit.

[0038] The primary filtration unit includes a filter cover 301, a rainwater collection pipe 302, and a filter box 303. The filter cover 301 is installed inside the drain outlet 2, the rainwater collection pipe 302 is installed at the bottom of the filter cover 301, and the filter box 303 is fixedly connected to the right end of the rainwater collection pipe 302. The filter cover 301 performs primary filtration of rainwater, intercepting large debris in the rainwater and preventing large debris from entering the sedimentation device through the water supply pipe.

[0039] The secondary filtration unit includes a filter screen 304, a drain outlet 305, and a sludge collection box 306. The filter screen 304 is installed inside the right end of the filter box 303, the drain outlet 305 is located at the bottom of the filter box 303, and the sludge collection box 306 is fixedly connected to the inside of the drain outlet 305. The filter screen 304 intercepts and filters small particles of debris in the rainwater flowing into the filter box 303. The intercepted impurities enter the sludge collection box 306 through the drain outlet 305 for collection. The debris in the box can be cleaned periodically.

[0040] The sedimentation device includes a sedimentation tank 501, a purified water tank 502, a water pump 503, a pumping pipe 504, a water supply pipe 505, and a sludge sensor 506. The sedimentation tank 501 is fixedly connected to the right side of the filter box 303. The purified water tank 502 is installed on the right side of the sedimentation tank 501. The water pump 503 is installed on the top of the sedimentation tank 501. The top of the pumping pipe 504 is installed at the inlet of the water pump 503, and its bottom extends into the interior of the sedimentation tank 501. The top of the water supply pipe 505 is installed at the outlet of the water pump 503. Its bottom extends into the interior of the water purification tank 502. The sludge sensor 506 is installed on the inner right side of the sedimentation tank 501 and is lower than the bottom of the water pumping pipe 504. The rainwater, after double filtration, flows into the interior of the sedimentation tank 501. After sedimentation, the sludge settles at the bottom of the sedimentation tank 501. Then, the water pump 503 is started to pump the settled rainwater through the water pumping pipe 504 into the interior of the water supply pipe 505 and into the interior of the water purification tank 502 for purification treatment, which is convenient for subsequent recycling.

[0041] A recycling pipe 507 is installed on the back of the sedimentation tank 501 and the clean water tank 502 respectively. A water pump 503 is also installed on the recycling pipe 507. After the rainwater is purified, the water pump 503 on the recycling pipe 507 on the back of the clean water tank 502 is started to pump the rainwater in the clean water tank 502 for recycling. When the sludge inside the sedimentation tank 501 accumulates to the height of the sludge sensor 506, the water pump 503 on the recycling pipe 507 on the back of the sedimentation tank 501 is started to pump out and clean the sludge.

[0042] Example 2:

[0043] Based on Embodiment 1, the filter device is equipped with a cleaning device inside, which includes a lifting unit and a power unit.

[0044] The lifting unit includes a limiting box 401, a connecting pipe 402, an elastic rope 403, and a moving box 404. The limiting box 401 is fixedly connected to the right side of the front of the filter box 303. The connecting pipe 402 is fixedly connected between the filter box 303 and the limiting box 401. The elastic rope 403 is fixedly connected to the center of the top wall of the limiting box 401. The moving box 404 is fixedly connected to the bottom of the elastic rope 403. Rainwater flowing into the filter box 303 is collected and discharged into the limiting box 401 through the connecting pipe 402.

[0045] The power unit includes a rotating shaft 405, a turbine 406, a driving bevel gear 407, and a driven bevel gear 408. The rotating shaft 405 is rotatably connected to the left outer surface of the movable box 404 via a sealed bearing. The turbine 406 is fixedly connected to the left end of the rotating shaft 405. The driving bevel gear 407 is fixedly connected to the right end of the rotating shaft 405. The driven bevel gear 408 is meshed with the driving bevel gear 407.

[0046] There are two sets of cleaning devices, which are symmetrically arranged on the front and rear sides of the filter box 303. Limiting grooves are provided on the front and rear sides of the filter box 303. The movable box 404 is slidably connected to the inside of the limiting groove, thereby restricting the movable box 404 to move vertically up and down along the inside of the limiting groove.

[0047] A brush 409 is rotatably connected between two movable boxes 404 via a sealed bearing. The front and rear ends of the brush 409 are respectively connected to two driven bevel gears 408. When the water flow is concentrated and flows into the interior of the limiting box 401, the water flow washes the turbine 406, thereby driving the driving bevel gear 407 to rotate, which in turn drives the driven bevel gear 408 to rotate, thereby driving the brush 409 to rotate. This brushes off the impurities inside the pores of the filter screen 304, preventing the filter screen 304 from being clogged and affecting the filtration effect. As the water flows downward, the impact force it generates causes the movable box 404 to move downward and stretches the elastic rope 403. When the elastic rope 403 is stretched to its limit, the resulting elasticity pulls the movable box 404 upward, thereby realizing the up-and-down movement of the brush 409 and thoroughly cleaning the filter screen 304.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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 limitations, 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.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rainwater dual-filtration and reuse device for constructing a sponge city, comprising a ground surface (1) and a drain outlet (2), wherein the drain outlet (2) is located above the ground surface (1), characterized in that: A filter device is provided at the bottom of the drain outlet (2), a cleaning device is provided inside the filter device, and a sedimentation device is provided on the right side of the filter device. The filtration device includes a primary filtration unit and a secondary filtration unit; The primary filtration unit includes a filter manhole cover (301), a rainwater collection pipe (302), and a filter box (303). The filter manhole cover (301) is installed inside the drain outlet (2), the rainwater collection pipe (302) is installed at the bottom of the filter manhole cover (301), and the filter box (303) is fixedly connected to the right end of the rainwater collection pipe (302). The cleaning device includes a lifting unit and a power unit; The lifting unit includes a limiting box (401), a connecting pipe (402), an elastic rope (403), and a moving box (404). The limiting box (401) is fixedly connected to the right side of the front of the filter box (303). The connecting pipe (402) is fixedly connected between the filter box (303) and the limiting box (401). The elastic rope (403) is fixedly connected to the center of the top wall of the limiting box (401). The moving box (404) is fixedly connected to the bottom of the elastic rope (403). The power unit includes a rotating shaft (405), a turbine (406), a driving bevel gear (407), and a driven bevel gear (408). The rotating shaft (405) is rotatably connected to the left outer surface of the movable box (404) through a sealed bearing. The turbine (406) is fixedly connected to the left end of the rotating shaft (405). The driving bevel gear (407) is fixedly connected to the right end of the rotating shaft (405). The driven bevel gear (408) is meshed with the driving bevel gear (407). The cleaning device consists of two sets, which are symmetrically arranged on the front and rear sides of the filter box (303). The filter box (303) has a limiting groove on the front and rear sides, and the movable box (404) is slidably connected to the inside of the limiting groove. A brush (409) is rotatably connected between the two movable boxes (404) via a sealed bearing, and the front and rear ends of the brush (409) are respectively connected to two driven bevel gears (408).

2. The rainwater dual filtration and infiltration reuse device for constructing sponge cities according to claim 1, characterized in that: The secondary filtration unit includes a filter screen (304), a drain outlet (305), and a sludge collection box (306). The filter screen (304) is installed inside the right end of the filter box (303), the drain outlet (305) is located at the bottom of the filter box (303), and the sludge collection box (306) is fixedly connected to the inside of the drain outlet (305).

3. The rainwater dual filtration and infiltration reuse device for constructing sponge cities according to claim 1, characterized in that: The sedimentation device includes a sedimentation tank (501), a purified water tank (502), a water pump (503), a water pump pipe (504), a water delivery pipe (505), and a sludge sensor (506). The sedimentation tank (501) is fixedly connected to the right side of the filter box (303). The purified water tank (502) is installed on the right side of the sedimentation tank (501). The water pump (503) is installed on the top of the sedimentation tank (501). The top of the water pump pipe (504) is installed at the water inlet of the water pump (503), and its bottom extends into the interior of the sedimentation tank (501). The top of the water delivery pipe (505) is installed at the water outlet of the water pump (503), and its bottom extends into the interior of the purified water tank (502). The sludge sensor (506) is installed on the inner right side of the sedimentation tank (501) and is lower than the bottom of the water pump pipe (504).

4. A rainwater dual-filtration and infiltration reuse device for constructing sponge cities according to claim 3, characterized in that: The back of the sedimentation tank (501) and the clean water tank (502) are respectively equipped with a recovery pipe (507), and a water pump (503) is also installed on the recovery pipe (507).

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