Rainwater purification structure for sponge city construction

Abstract

The utility model relates to a rainwater purification structure for sponge city construction, and belongs to the technical field of rainwater purification. The device comprises a first filtering mechanism, a second filtering mechanism, a conveying mechanism and a temporary storage mechanism, wherein the first filtering mechanism comprises a slope body and a plurality of blocking pieces distributed on the slope body; the second filtering mechanism comprises a filtering cavity, a rough filtering assembly and a fine filtering assembly, the upper end of the filtering cavity is connected with the lower end of the slope body, the rough filtering assembly and the fine filtering assembly are relatively independent, the rough filtering assembly and the fine filtering assembly are detachably connected with the filtering cavity, and the rough filtering assembly is arranged above the fine filtering assembly; the conveying mechanism comprises a connecting pipeline; a first end of the connecting pipeline is connected with the lower end of the filtering cavity; the temporary storage mechanism comprises a temporary storage body and a water storage pipeline, the temporary storage body is arranged on one side of the second filtering mechanism, the second end of the connecting pipeline communicates with the temporary storage body, and the water storage pipeline communicates with the temporary storage body and is used for outputting rainwater in the temporary storage body. The rainwater purification structure has the effect of improving the replacement convenience of the filtering mechanism in the rainwater purification structure.

Description

Technical Field

[0001] The present application relates to the field of rainwater purification technology, and in particular to a rainwater purification structure for use in sponge city construction. Background Art

[0002] A sponge city is a city that is resilient in responding to natural disasters such as those caused by rainwater. During rainstorms, the sponge city's rainwater purification structures purify and store rainwater to a certain extent, reducing impurities in the rainwater and allowing the purified water to be stored and used.

[0003] At present, the water purification structure used in sponge city construction generally purifies rainwater through a filter layer fixed underground, and transports the purified rainwater to water storage structures such as grass-planted ditches to realize the storage and utilization of rainwater.

[0004] However, after prolonged use, the impurity content in the filter layer increases, reducing the filtration effect. Since the filter layer is fixed underground, it is difficult to clean and replace the filter layer, which is not conducive to ensuring the purification effect of rainwater.

[0005] In the above-mentioned related technologies, there is a defect that the filter layer of the rainwater purification structure is difficult to clean and replace. Utility Model Content

[0006] In order to improve the convenience of replacing the filtering mechanism in the rainwater purification structure and reduce the difficulty of cleaning, the present application provides a rainwater purification structure for sponge city construction.

[0007] The rainwater purification structure for sponge city construction provided in this application adopts the following technical solutions:

[0008] A rainwater purification structure for sponge city construction includes: a first filtering mechanism, including a slope and several blocking members, and several of the blocking members are distributed on the slope; a second filtering mechanism, including a filter cavity, a coarse filter component and a fine filter component, the upper end of the filter cavity is connected to the lower end of the slope, the coarse filter component and the fine filter component are relatively independent, and both the coarse filter component and the fine filter component are detachable and connected to the filter cavity, and the coarse filter component is arranged above the fine filter component; a conveying mechanism, including a connecting pipe, a first end of the connecting pipe is connected to the lower end of the filter cavity; a temporary storage mechanism, including a temporary storage body and a water storage pipe, the temporary storage body is arranged on one side of the second filtering mechanism, the second end of the connecting pipe is connected to the temporary storage body, and the water storage pipe is connected to the temporary storage body, and the water storage pipe is used to output rainwater in the temporary storage body.

[0009] By adopting the above technical solution, the first filtering mechanism realizes the pre-filtration of rainwater, and the inclined slope can realize the convergence and diversion of rainwater, so that rainwater can flow more easily to the second filtering mechanism at the bottom of the slope, thereby improving the rainwater purification efficiency; a number of blocking members distributed on the slope can realize the preliminary interception of impurities in the rainwater, thereby realizing the pre-filtration of impurities in the rainwater and reducing the larger impurities in the rainwater; then the rainwater flows into the second filtering mechanism, and the coarse filter component in the filter cavity first performs coarse filtering on the rainwater to preliminarily filter the impurities in the rainwater, and then the fine filter component performs fine filtering on the rainwater to further filter the rainwater and reduce the impurity content in the rainwater, thereby improving the purification efficiency of the rainwater. High purification degree of rainwater; then, the purified rainwater is transported to the temporary storage body through the connecting pipe to realize the storage of rainwater, and the purified rainwater in the temporary storage body can be transported to the predetermined area through the water storage pipe to realize the effective use of rainwater; since the coarse filter component and the fine filter component are relatively independent, and the coarse filter component and the filter cavity, and the fine filter component and the filter cavity are all detachably connected, the coarse filter component and the fine filter component can be conveniently removed from the filter cavity when the second filter mechanism needs to be replaced or cleaned, which is convenient for cleaning the filter cavity, the coarse filter component and the fine filter component separately, or replacing the coarse filter component and the fine filter component, which helps to reduce the difficulty of cleaning.

[0010] Optionally, the coarse filter assembly includes a coarse filter cylinder and a coarse filter element, the coarse filter cylinder is slidably connected to the filter cavity, the coarse filter element is arranged in the coarse filter cylinder, and the coarse filter cylinder is provided with a plurality of coarse filter holes; the fine filter assembly includes a fine filter cylinder and a fine filter element, the fine filter cylinder is slidably connected to the filter cavity, the fine filter element is arranged in the fine filter cylinder, and the fine filter cylinder is provided with a plurality of fine filter holes, the filtration accuracy of the fine filter element is higher than the filtration accuracy of the coarse filter element, and the diameter of the fine filter hole is smaller than the diameter of the coarse filter hole.

[0011] By adopting the above technical solution, the coarse filter cylinder is used to hold the coarse filter element, thereby achieving a supporting and bearing effect on the coarse filter element. The coarse filter element used to achieve preliminary filtration of rainwater can be moved into or out of the filter cavity as a whole, reducing the difficulty of cleaning; the coarse filter holes on the coarse filter cylinder are used to allow rainwater to flow out, and can achieve a certain blocking effect on impurities, thereby optimizing the preliminary filtration effect; the fine filter cylinder is used to hold the fine filter element, thereby achieving a supporting and bearing effect on the fine filter element. The fine filter element used to achieve further filtration of rainwater can be moved into or out of the filter cavity as a whole, reducing the difficulty of cleaning; the fine filter holes on the fine filter cylinder are used to allow rainwater to flow out, and can achieve a further blocking effect on impurities, thereby optimizing the filtration effect and improving the degree of rainwater purification.

[0012] Optionally, the coarse filter cartridge includes a first containing body and a first cover, the first cover is detachably connected to the upper end of the first containing body, and the coarse filter element is installed in the first containing body; the fine filter cartridge includes a second containing body and a second cover, the second cover is detachably connected to the upper end of the second containing body, and the fine filter element is installed in the second containing body.

[0013] By adopting the above technical solution, the first holding body of the primary filter cartridge is used to carry the coarse filter element, and the first cover body is used to close the first holding body to prevent the coarse filter element from scattering; the second holding body of the fine filter cartridge is used to carry the fine filter element, and the second cover body is used to close the second holding body to prevent the fine filter element from scattering, so that the coarse filter element and the fine filter element can be moved as a whole separately, reducing the difficulty of cleaning.

[0014] Optionally, the inner wall of the filter cavity is provided with a first slide groove and a second slide groove, the first slide groove and the second slide groove are circumferentially staggered, the outer periphery of the coarse filter cylinder is provided with a first slider, the outer periphery of the fine filter cylinder is provided with a second slider, the first slider is slidably connected to the first slide groove, and the second slider is slidably connected to the second slide groove.

[0015] By adopting the above technical solution, the fine filter cylinder can be vertically moved to be assembled in the filter chamber through the sliding cooperation of the second slider and the second slide groove, and the coarse filter cylinder can be vertically moved to be assembled in the filter chamber through the sliding cooperation of the first slider and the first slide groove; since the first slide groove and the second slide groove are circumferentially staggered, when the fine filter cylinder moves upward, the coarse filter cylinder can be driven to move upward at the same time, thereby making it possible to easily empty the filter chamber and reduce the difficulty of cleaning.

[0016] Optionally, a first clamping member is provided on the first slider, the first end of the first clamping member is connected to the first slider, and the second end of the first clamping member is used to clamp to the upper end of the filter cavity; a second clamping member is provided on the second slider, the first end of the second clamping member is connected to the second slider, and the second end of the second clamping member is used to clamp to the upper end of the filter cavity.

[0017] By adopting the above technical solution, the first clamping part can hoist the coarse filter cylinder in the filter cavity, and the second clamping part can hoist the fine filter cylinder in the filter cavity. The first slide groove and the second slide groove are circumferentially staggered, thereby avoiding the problem of interference between the first clamping part and the second clamping part. The first clamping part and the second clamping part can prevent the coarse filter cylinder and the fine filter cylinder from sinking, and can easily realize the coarse filter cylinder and the fine filter cylinder being moved out of the filter cavity, reducing the difficulty of cleaning.

[0018] Optionally, the first clamping member includes a first flexible portion and a first clamping portion, one end of the first flexible portion is connected to the first slider, the first clamping portion is provided at the other end of the first flexible portion, and the first clamping portion is mounted above the first slide groove; the second clamping member includes a second flexible portion and a second clamping portion, one end of the second flexible portion is connected to the second slider, the second clamping portion is provided at the other end of the second flexible portion, and the second clamping portion is mounted above the second slide groove.

[0019] By adopting the above technical solution, the first flexible part and the second flexible part can respectively realize the lifting of the coarse filter cylinder and the fine filter cylinder, and during the pulling process, the flexibility of the first flexible part and the second flexible part can reduce the vertical space occupied, which helps to reduce the difficulty of use and improve applicability; the first clamping part and the second clamping part are used to realize the clamping at the upper end of the filter cavity to prevent the ends of the first flexible part and the second flexible part from falling into the filter cavity and being unable to pull.

[0020] Optionally, the conveying mechanism includes a sewage pipe, a telescopic part and a moving assembly, the sewage pipe is connected to the lower end of the filter cavity, the sewage pipe is arranged on one side of the connecting pipe, the lower end of the filter cavity is provided with a avoidance part, the moving assembly and the movable end of the telescopic part are both movably arranged in the avoidance part, the movable end of the telescopic part is connected to the moving assembly, the telescopic part drives the moving assembly to move in the avoidance part, the moving assembly is used to selectively block the sewage pipe, and the movable end of the telescopic part is used to selectively block the connecting pipe.

[0021] By adopting the above technical solution, when purifying water, the movable component blocks the sewage pipe, so that the filtered rainwater can enter the temporary storage body through the connecting pipe; when the filter cavity needs to be cleaned, the movable end of the telescopic component moves horizontally and extends into the avoidance part, driving the movable component to slide relative to the avoidance part, so that the movable component opens the sewage pipe. At the same time, the movable end of the telescopic component blocks the connecting pipe, so that the water containing more impurities in the cleaning filter cavity can be discharged into the sewage pipe; and, in the case of heavy rainfall, by removing the coarse filter cylinder and the fine filter cylinder, opening the sewage pipe, and blocking the connecting pipe, a large amount of rainwater can flow directly into the sewage pipe, thereby achieving the effect of flood discharge and reducing the risk of urban waterlogging.

[0022] Optionally, the moving assembly includes a moving cavity, an elastic member, a blocking member and a pushing member, the moving cavity is provided on a side of the sewage pipe away from the connecting pipe, the moving cavity extends horizontally, the first end of the elastic member is connected to the bottom of the moving cavity away from the sewage pipe, the second end of the elastic member is connected to the first end of the blocking member, so that when the elastic member is in an initial state, the blocking member blocks the sewage pipe, the second end of the blocking member is connected to the first end of the pushing member, the cross-sectional area of the pushing member is smaller than the flow area of the connecting pipe, and the movable end of the telescopic member is used to push the pushing member to move horizontally, drive the blocking member to compress the elastic member, so that the blocking member is connected to the sewage pipe.

[0023] By adopting the above technical solution, the movable cavity provides space for the movement of the blocking member. When the movable end of the telescopic member is not extended and the elastic member is in the initial state, the elastic member supports the blocking member to block the sewage pipe, the connecting pipe is opened, and the filtered rainwater can flow into the temporary storage body through the connecting pipe; when the filter cavity needs to be cleaned or the rainfall is heavy, the movable end of the telescopic member extends and extends into the avoidance portion to achieve blocking of the connecting pipe, and at the same time pushes the pushing member to drive the blocking member to move, and the elastic member is compressed by the blocking member to retract the blocking member into the movable cavity until the movable end of the telescopic member blocks the connecting pipe, and the blocking member opens the sewage pipe, so that the pushing member is located above the sewage pipe, so that the water containing more impurities in the filter cavity can directly flow into the sewage pipe, thereby improving the cleaning and flood discharge efficiency; when it needs to be reset, the movable end of the telescopic member retracts and the elastic energy of the elastic member pushes the blocking member to reset to block the sewage pipe.

[0024] Optionally, the temporary storage mechanism also includes an overflow component, which includes an overflow pipe, an overflow trough, a liquid level gauge, a control valve body and a discharge pipe. The first end of the overflow pipe is connected to the temporary storage body, and the first end of the overflow pipe is spaced apart from the top of the temporary storage body at a preset distance. The overflow trough is provided on one side of the temporary storage body, and the second end of the overflow pipe is connected to the overflow trough. The liquid level gauge is provided in the overflow trough, and the first end of the discharge pipe is connected to the bottom of the overflow trough. The control valve body is provided at the first end of the discharge pipe, and the control valve body is electrically connected to the liquid level gauge. The control valve body is used to control the on and off of the discharge pipe, and the second end of the discharge pipe is connected to the drainage system.

[0025] By adopting the above technical solution, the capacity of the temporary storage body is limited. When the water storage pipe is not connected or the water demand in the predetermined area is small, the amount of purified water stored in the temporary storage body is large. The overflow pipe arranged near the top of the temporary storage body can be used for discharge, thereby preventing the temporary storage body from having too much water and too high pressure, which may affect the safety of use; the water flowing out of the overflow pipe enters the overflow trough, and the amount of overflowed water is judged by the liquid level gauge in the overflow trough. When the amount of rainwater in the overflow trough reaches a preset value, the control valve body is opened to guide the rainwater overflowing from the overflow trough into the drainage system through the discharge pipe, thereby avoiding pollution of the purified rainwater due to the continuous connection between the overflow pipe and the drainage system; at the same time, the temporary storage body can also be filled with water, thereby increasing the water storage capacity.

[0026] Optionally, the water storage pipe is arranged below the overflow pipe, and the vertical height of the water storage pipe is lower than that of the connecting pipe.

[0027] By adopting the above technical solution, the water storage pipe is lower than the overflow pipe and the connecting pipe, which makes it easy to discharge the purified rainwater in the temporary storage body to the predetermined area. While improving the utilization rate, it can also facilitate the emptying of the temporary storage body and alleviate the secondary pollution problem caused by the inability to empty the water for a long time.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The first filtering mechanism realizes the pre-filtration of rainwater. The inclined slope can realize the convergence and diversion of rainwater, so that rainwater can flow more easily to the second filtering mechanism at the bottom of the slope, thereby improving the rainwater purification efficiency; a number of blocking members distributed on the slope can realize the preliminary interception of impurities in the rainwater, thereby realizing the pre-filtration of impurities in the rainwater and reducing the larger impurities in the rainwater; then the rainwater flows into the second filtering mechanism, and the coarse filter component in the filter cavity first performs coarse filtration on the rainwater to preliminarily filter out impurities in the rainwater, and then the fine filter component performs fine filtration on the rainwater to further filter the rainwater, reduce the impurity content in the rainwater, and improve the purification efficiency of the rainwater. The purified rainwater is then transported to the temporary storage body through the connecting pipe to realize the storage of rainwater, and the purified rainwater in the temporary storage body can be transported to the predetermined area through the water storage pipe to realize the effective utilization of rainwater. Since the coarse filter component and the fine filter component are relatively independent, and the coarse filter component and the filter cavity, as well as the fine filter component and the filter cavity are all detachably connected, the coarse filter component and the fine filter component can be conveniently removed from the filter cavity when the second filter mechanism needs to be replaced or cleaned, so that the filter cavity, the coarse filter component and the fine filter component can be cleaned separately, or the coarse filter component and the fine filter component can be replaced, which helps to reduce the difficulty of cleaning.

[0030] 2. The fine filter cartridge can be vertically moved and assembled in the filter chamber by the sliding cooperation of the second slider and the second chute. The coarse filter cartridge can be vertically moved and assembled in the filter chamber by the sliding cooperation of the first slider and the first chute. Since the first chute and the second chute are circumferentially staggered, when the fine filter cartridge moves upward, the coarse filter cartridge can also be driven upward, thereby conveniently emptying the filter chamber and reducing the difficulty of cleaning.

[0031] 3. The first clamping piece can hoist the coarse filter cylinder into the filter cavity, and the second clamping piece can hoist the fine filter cylinder into the filter cavity. The first slide groove and the second slide groove are circumferentially staggered, thereby avoiding the problem of interference between the first clamping piece and the second clamping piece. The first clamping piece and the second clamping piece can prevent the coarse filter cylinder and the fine filter cylinder from sinking, and can easily move the coarse filter cylinder and the fine filter cylinder out of the filter cavity, reducing the difficulty of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of a rainwater purification structure for sponge city construction according to an embodiment of the present application.

[0033] Figure 2 This is a top view of a rainwater purification structure for sponge city construction according to an embodiment of the present application.

[0034] Figure 3 yes Figure 2 Cross-section view at AA in the middle.

[0035] Figure 4 It is a schematic diagram of the coarse filtration component and the fine filtration component of an embodiment of the present application.

[0036] Description of reference numerals:

[0037] 100. Soil; 1. First filter mechanism; 11. Slope; 12. Blocking member; 2. Second filter mechanism; 21. Filter chamber; 211. First chute; 212. Second chute; 22. Coarse filter assembly; 221. Coarse filter hole; 222. First container body; 223. First cover; 224. First slider; 225. First clamping member; 2251. First flexible portion; 2252. First clamping member; 23. Fine filter assembly; 231. Fine filter hole; 232. Second container body; 233. Second cover; 234. Second slider; 235, second clamping part; 2351, second flexible part; 2352, second clamping part; 3, conveying mechanism; 31, connecting pipe; 32, sewage pipe; 33, telescopic part; 34, moving assembly; 341, moving cavity; 342, elastic part; 343, blocking part; 344, pushing part; 4, temporary storage mechanism; 41, temporary storage body; 42, water storage pipe; 43, overflow assembly; 431, overflow pipe; 432, overflow trough; 433, liquid level gauge; 434, control valve body; 435, discharge pipe. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1 -Attached Figure 4 The present application is further described in detail. In this embodiment, unless otherwise specified, the terms "connected", "connected" and "fixed" are understood in a broad sense, including fixed connection, detachable connection, connection to form an integral structure, mechanical connection, electrical connection, direct connection, indirect connection through an intermediary, internal connection and interaction between two elements, and can be understood based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, in the description of this embodiment, the terms "above", "below", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise specified, orientation words such as "inside" and "outside" used in this application refer to the outlines of the corresponding components themselves.

[0040] like Figure 1 、 Figure 2 and Figure 3 As shown, the present application discloses a rainwater purification structure for sponge city construction (hereinafter referred to as the "rainwater purification structure"). The rainwater purification structure includes a first filtering mechanism 1, a second filtering mechanism 2, a conveying mechanism 3, and a temporary storage mechanism 4. It is used to purify rainwater and store the purified rainwater with a low impurity content and meeting water quality requirements in a predetermined area so that it can be used when needed, thereby improving rainwater utilization.

[0041] The first filtering mechanism 1 includes a slope 11 and a plurality of blocking members 12, and the plurality of blocking members 12 are distributed on the slope 11. The first filtering mechanism 1 realizes the pre-filtration of rainwater, and the inclined slope 11 can realize the function of converging and diverting rainwater, so that rainwater can more easily flow to the second filtering mechanism 2 at the bottom of the slope 11, thereby improving the efficiency of rainwater purification. The plurality of blocking members 12 distributed on the slope 11 can realize the preliminary interception of impurities in the rainwater, thereby realizing the pre-filtration of impurities in the rainwater and reducing larger impurities in the rainwater. The slope 11 can be set in two relative positions, or in a funnel-shaped ring; the inclination angle, length and other parameters of the slope 11 can be set as needed. The blocking member 12 can be a pebbles, which is used to block larger impurities in the rainwater and realize the pre-filtration of rainwater.

[0042] like Figure 1 、 Figure 3 and Figure 4 As shown, the second filter mechanism 2 includes a filter chamber 21, a coarse filter assembly 22, and a fine filter assembly 23. The upper end of the filter chamber 21 is connected to the lower end of the slope 11. The coarse filter assembly 22 and the fine filter assembly 23 are relatively independent and can be detachably connected to the filter chamber 21. The coarse filter assembly 22 is located above the fine filter assembly 23. After rainwater flows into the second filter mechanism 2, the coarse filter assembly 22 in the filter chamber 21 first performs a coarse filter on the rainwater, initially filtering out impurities in the rainwater. The fine filter assembly 23 then performs a fine filter on the rainwater, further filtering the rainwater, reducing the impurity content in the rainwater, and improving the purification level of the rainwater. Since the coarse filter assembly 22 and the fine filter assembly 23 are relatively independent, and the coarse filter assembly 22 and the filter cavity 21, and the fine filter assembly 23 and the filter cavity 21 are all detachably connected, when the second filter mechanism 2 needs to be replaced or cleaned, the coarse filter assembly 22 and the fine filter assembly 23 can be conveniently removed from the filter cavity 21, making it easy to clean the filter cavity 21, the coarse filter assembly 22 and the fine filter assembly 23 separately, or to replace the coarse filter assembly 22 and the fine filter assembly 23, which helps to reduce the difficulty of cleaning. The cross-section of the filter cavity 21 can be circular to reduce the deposition of impurities. The lower end of the filter cavity 21 can be set to an inclined structure, which can achieve the diversion effect on rainwater on the one hand, and on the other hand, it can limit the continuous downward movement of the fine filter assembly 23 by gradually reducing the diameter, thereby playing a limiting role.

[0043] like Figure 1 、 Figure 3 and Figure 4 As shown, the conveying mechanism 3 includes a connecting pipe 31, and the temporary storage mechanism 4 includes a temporary storage body 41 and a water storage pipe 42. The temporary storage body 41 is located on one side of the second filter mechanism 2. The first end of the connecting pipe 31 is connected to the lower end of the filter chamber 21, and the second end of the connecting pipe 31 is connected to the temporary storage body 41. The water storage pipe 42 is connected to the temporary storage body 41 and is used to output rainwater from the temporary storage body 41. The purified rainwater is transported to the temporary storage body 41 via the connecting pipe 31, thereby temporarily storing the rainwater. The purified rainwater in the temporary storage body 41 can also be transported to a predetermined area for storage via the water storage pipe 42, allowing it to be utilized when needed. The second filter mechanism 2, the conveying mechanism 3, and the temporary storage mechanism 4 can be located in the soil 100 below the ground. The first filter mechanism 1 can be used to collect rainwater from the ground, thereby improving rainwater purification efficiency and utilization rate. The bends in the connecting pipe 31 can be rounded to reduce the accumulation of impurities that affect the purification effect. The temporary storage body 41 may be a well structure for storing water. The temporary storage body 41 may be provided with necessary water level monitoring structures and water quality monitoring structures to improve the safety of use and ensure the purification effect.

[0044] like Figure 1 、 Figure 3 and Figure 4 As shown, optionally, the coarse filter assembly 22 includes a coarse filter cylinder and a coarse filter element. The coarse filter cylinder is slidably connected to the filter cavity 21, the coarse filter element is arranged in the coarse filter cylinder, and a number of coarse filter holes 221 are provided on the coarse filter cylinder. The coarse filter cylinder is used to hold the coarse filter element, realize the supporting and bearing effect on the coarse filter element, so that the coarse filter element used to realize the preliminary filtration of rainwater can be moved into or out of the filter cavity 21 as a whole, reducing the difficulty of cleaning the filter cavity 21 and the coarse filter cylinder, and facilitating the replacement of the coarse filter element. The coarse filter holes 221 on the coarse filter cylinder are used to allow rainwater to flow out, and can achieve a certain blocking effect on impurities, thereby optimizing the preliminary filtration effect. The fine filter assembly 23 includes a fine filter cylinder and a fine filter element. The fine filter cylinder is slidably connected to the filter cavity 21, the fine filter element is arranged in the fine filter cylinder, and a number of fine filter holes 231 are provided on the fine filter cylinder. The fine filter cartridge houses and supports the fine filter element, allowing it to be moved in and out of the filter chamber 21 for further rainwater filtration, simplifying cleaning. The fine filter element has a higher filtration accuracy than the coarse filter element, and the diameter of the fine filter holes 231 is smaller than that of the coarse filter holes 221 (not shown). The fine filter holes 231 in the fine filter cartridge allow rainwater to flow out and further block impurities, optimizing the filtration effect and improving the purification of rainwater. The coarse filter element can be a certain amount of gravel, installed in the coarse filter cartridge. The fine filter element can be a certain amount of activated carbon, preferably granular activated carbon, placed in a mesh bag and placed in the fine filter cartridge. This allows for complete movement, facilitating replacement and cleaning of the fine filter element. The diameters of the coarse and fine filter holes 221 and 231 are adjusted as needed to achieve the desired filtration effect while preventing leakage of the coarse and fine filter elements within. Ordinary non-woven fabrics can be provided on the periphery of the coarse filter element and the fine filter element to reduce the risk of leakage while not affecting the infiltration and outflow of rainwater.

[0045] Optionally, the inner circumferential wall of the filter chamber 21 is provided with a first chute 211 and a second chute 212, which are circumferentially offset. A first slider 224 is provided on the outer circumference of the coarse filter cartridge, and a second slider 234 is provided on the outer circumference of the fine filter cartridge. The first slider 224 is slidably connected to the first chute 211, and the second slider 234 is slidably connected to the second chute 212. The fine filter cartridge can be vertically moved and assembled within the filter chamber 21 through the sliding cooperation between the second slider 234 and the second chute 212. The coarse filter cartridge can be vertically moved and assembled within the filter chamber 21 through the sliding cooperation between the first slider 224 and the first chute 211. Because the first chute 211 and the second chute 212 are circumferentially offset, when the fine filter cartridge moves upward, the coarse filter cartridge is also driven upward, thereby conveniently emptying the filter chamber 21 and reducing the difficulty of cleaning the filter chamber 21. The coarse filter cylinder and the fine filter cylinder can be pulled manually or mechanically. To improve reliability, two first chute 211 and two second chute 212 can be symmetrically provided, and two first sliders 224 and second sliders 234 can also be correspondingly provided.

[0046] like Figure 1 、 Figure 3 and Figure 4 As shown, optionally, a first clamping member 225 is provided on the first slider 224. The first end of the first clamping member 225 is connected to the first slider 224, and the second end of the first clamping member 225 is used to clamp the upper end of the filter chamber 21. A second clamping member 235 is provided on the second slider 234. The first end of the second clamping member 235 is connected to the second slider 234, and the second end of the second clamping member 235 is used to clamp the upper end of the filter chamber 21. The first clamping member 225 can be used to hoist the coarse filter cartridge into the filter chamber 21, and the second clamping member 235 can be used to hoist the fine filter cartridge into the filter chamber 21. The first chute 211 and the second chute 212 are circumferentially offset, thereby preventing interference between the first clamping member 225 and the second clamping member 235. The first clamping member 225 and the second clamping member 235 can prevent the coarse filter cylinder and the fine filter cylinder from sinking, and can conveniently move the coarse filter cylinder and the fine filter cylinder out of the filter cavity 21, thereby reducing the difficulty of cleaning.

[0047] Optionally, the first clamping member 225 includes a first flexible portion 2251 and a first clamping portion 2252. One end of the first flexible portion 2251 is connected to the first slider 224, and the first clamping portion 2252 is located at the other end of the first flexible portion 2251. The first clamping portion 2252 is mounted above the first chute 211. The second clamping member 235 includes a second flexible portion 2351 and a second clamping portion 2352. One end of the second flexible portion 2351 is connected to the second slider 234, and the second clamping portion 2352 is located at the other end of the second flexible portion 2351. The second clamping portion 2352 is mounted above the second chute 212. The first flexible portion 2251 and the second flexible portion 2351 can respectively facilitate the lifting of the coarse filter cartridge and the fine filter cartridge. During the lifting process, the flexibility of the first flexible portion 2251 and the second flexible portion 2351 can reduce vertical space occupied, thereby reducing difficulty in use and improving applicability. The first clamping portion 2252 and the second clamping portion 2352 are used to achieve clamping at the upper end of the filter cavity 21, preventing the ends of the first flexible portion 2251 and the second flexible portion 2351 from falling into the filter cavity 21 and being unable to be pulled. The first flexible portion 2251 and the second flexible portion 2351 can both be ropes to facilitate pulling, and the flexibility of the ropes can prevent the ropes from extending too high vertically when pulled, thereby affecting ease of use. The first clamping portion 2252 and the second clamping portion 2352 can both be rod-shaped structures, the length of which needs to be greater than the width of the first chute 211 and the second chute 212, so that they can be mounted on the filter cavity 21 and achieve clamping.

[0048] like Figure 1 、 Figure 3 and Figure 4 As shown, optionally, the primary filter cartridge includes a first containing body 222 and a first cover 223. The first cover 223 is detachably connected to the upper end of the first containing body 222, and the coarse filter element is installed in the first containing body 222. The first containing body 222 of the primary filter cartridge is used to carry the coarse filter element, and the first cover 223 is used to close the first containing body 222 to prevent the coarse filter element from scattering. The fine filter cartridge includes a second containing body 232 and a second cover 233, and the second cover 233 is detachably connected to the upper end of the second containing body 232, and the fine filter element is installed in the second containing body 232. The second containing body 232 of the fine filter cartridge is used to carry the fine filter element, and the second cover 233 is used to close the second containing body 232 to prevent the fine filter element from scattering, so that the coarse filter element and the fine filter element can be moved as a whole respectively, thereby reducing the difficulty of cleaning. The first receiving body 222 and the second receiving body 232 are both cylindrical structures with a bottom surface. The coarse filter assembly 22 and the fine filter assembly 23 can have the same or similar structures. Bolts or screws can be used to achieve a removable connection between the first cover 223 and the first receiving body 222, and between the second cover 233 and the second receiving body 232, to facilitate replacement of the coarse and fine filter elements within and cleaning of the coarse and fine filter cylinders.

[0049] like Figure 1 、 Figure 3 and Figure 4 As shown, optionally, the conveying mechanism 3 includes a sewage pipe 32, a telescopic member 33 and a moving assembly 34. The sewage pipe 32 is connected to the lower end of the filter chamber 21, and the sewage pipe 32 is arranged on one side of the connecting pipe 31. The lower end of the filter chamber 21 is provided with an avoidance portion, and the movable ends of the moving assembly 34 and the telescopic member 33 are both movably arranged in the avoidance portion. The movable end of the telescopic member 33 is connected to the moving assembly 34, and the telescopic member 33 drives the moving assembly 34 to move in the avoidance portion. The moving assembly 34 is used to selectively block the sewage pipe 32, and the movable end of the telescopic member 33 is used to selectively block the connecting pipe 31. The telescopic member 33 can be a structure that can achieve telescopic expansion and contraction, such as a cylinder, a hydraulic cylinder or an electric telescopic rod. The fixed end of the telescopic member 33 is connected to the filter chamber 21 or buried in the soil 100 for fixation, and the movable end of the telescopic member 33 can achieve horizontal expansion and contraction in the avoidance portion. The avoidance portion can be a horizontally extending through-hole structure provided at the lower end of the filter cavity 21, providing horizontal movement space for the moving assembly 34 and the telescopic member 33. The sewage pipe 32 can be connected to the city's drainage system.

[0050] During water purification, the movable assembly 34 blocks the sewage pipe 32, allowing the filtered rainwater to enter the temporary storage body 41 through the connecting pipe 31. When it is necessary to clean the filter cavity 21, the coarse filter assembly 22, or the fine filter assembly 23, the movable end of the telescopic member 33 moves horizontally into the avoidance portion, driving the movable assembly 34 to slide relative to the avoidance portion, so that the movable assembly 34 opens the sewage pipe 32; at the same time, the movable end of the telescopic member 33 blocks the connecting pipe 31, so that the water containing more impurities after cleaning the filter cavity 21 can be discharged into the sewage pipe 32. In addition, in the case of heavy rainfall, by removing the coarse filter cylinder and the fine filter cylinder, opening the sewage pipe 32, and blocking the connecting pipe 31, a large amount of rainwater can flow directly into the sewage pipe 32, achieving the effect of rapid flood discharge and reducing the risk of waterlogging.

[0051] like Figure 1 、 Figure 3 and Figure 4As shown, optionally, the moving assembly 34 includes a moving cavity 341, an elastic member 342, a blocking member 343 and a pushing member 344. The moving cavity 341 is provided on the side of the sewage pipe 32 away from the connecting pipe 31, and the moving cavity 341 extends horizontally. The first end of the elastic member 342 is connected to the bottom of the moving cavity 341 on the side away from the sewage pipe 32, and the second end of the elastic member 342 is connected to the first end of the blocking member 343. The moving cavity 341 provides space for the movement of the blocking member 343. When the elastic member 342 is in the initial state, the blocking member 343 blocks the sewage pipe 32. The second end of the blocking member 343 is connected to the first end of the pushing member 344. The cross-sectional area of the pushing member 344 is smaller than the flow area of the connecting pipe 31. The movable end of the telescopic member 33 is used to push the pushing member 344 to move horizontally, driving the blocking member 343 to compress the elastic member 342, so that the blocking member 343 is connected to the sewage pipe 32. The first end of the movable cavity 341 near the sewage pipe 32 is provided with a first protrusion, and the end of the sealing member 343 near the elastic member 342 is provided with a second protrusion, so that the sealing member 343 can be locked by the cooperation of the second protrusion and the first protrusion, preventing the sealing member 343 from falling out of the movable cavity 341. The end of the sealing member 343 near the push member 344 can be a rectangular parallelepiped structure, and its length and width in the horizontal plane are both greater than the diameter of the sewage pipe 32 to achieve a blocking effect. The movable end of the telescopic member 33 can also be a rectangular parallelepiped structure, and its length and width in the horizontal plane are both greater than the diameter of the connecting pipe 31 to achieve a blocking effect. The push member 344 can be a round rod structure, and its cross-sectional area is smaller than the flow area of the connecting pipe 31 and the flow area of the sewage pipe 32 to avoid blockage. A limiting groove is provided on the side of the movable end of the telescopic member 33 near the push member 344, so that the end of the push member 344 can be aligned in the limiting groove, improving reliability during pushing. The elastic member 342 may be a spring, and its length, stiffness and other parameters may be set as needed.

[0052] When the movable end of the telescopic member 33 is not extended and the elastic member 342 is in the initial state, the elastic member 342 supports the blocking member 343 to block the sewage pipe 32, the connecting pipe 31 is opened, and the filtered rainwater can flow into the temporary storage body 41 through the connecting pipe 31. When the filter chamber 21 needs to be cleaned or the rainfall is heavy, the movable end of the telescopic member 33 extends and extends into the avoidance portion to block the connecting pipe 31, while pushing the pushing member 344 to move the blocking member 343. The blocking member 343 compresses the elastic member 342, causing the blocking member 343 to retract into the movable chamber 341 until the movable end of the telescopic member 33 blocks the connecting pipe 31 and the blocking member 343 opens the sewage pipe 32, so that the pushing member 344 is located above the sewage pipe 32. This allows the water containing more impurities in the filter chamber 21 to flow directly into the sewage pipe 32, thereby improving the cleaning and flood discharge efficiency. When reset is required, the movable end of the telescopic member 33 retracts and the elastic energy of the elastic member 342 pushes the blocking member 343 to reset to block the sewage pipe 32 .

[0053] like Figure 1 、 Figure 3 and Figure 4 As shown, the temporary storage mechanism 4 optionally further includes an overflow assembly 43, which includes an overflow pipe 431, an overflow trough 432, a liquid level gauge 433, a control valve body 434, and a discharge pipe 435. The first end of the overflow pipe 431 is connected to the temporary storage body 41, and the first end of the overflow pipe 431 is spaced apart from the top of the temporary storage body 41 at a preset distance. The overflow trough 432 is provided on one side of the temporary storage body 41, the second end of the overflow pipe 431 is connected to the overflow trough 432, the liquid level gauge 433 is provided in the overflow trough 432, the first end of the discharge pipe 435 is connected to the bottom of the overflow trough 432, and the control valve body 434 is provided at the first end of the discharge pipe 435. The control valve body 434 is electrically connected to the liquid level gauge 433 and is used to control the on / off of the discharge pipe 435. The second end of the discharge pipe 435 is connected to the drainage system. The control valve body 434 can be a solenoid valve, and the liquid level gauge 433 can be a liquid level sensor. The types of the solenoid valve and the liquid level sensor can be selected as needed. The preset distance is set as needed so that the overflow pipe 431 is close to the top of the temporary storage body 41.

[0054] Because the capacity of the temporary storage body 41 is limited, when the water storage pipe 42 is not connected or the water demand in the predetermined area is low, resulting in a large amount of purified water stored in the temporary storage body 41, the overflow pipe 431 located near the top of the temporary storage body 41 can be used to discharge the water, preventing the temporary storage body 41 from accumulating excessive water and excessive pressure, which could affect safe use. The water flowing out of the overflow pipe 431 enters the overflow trough 432. The liquid level gauge 433 in the overflow trough 432 determines the amount of overflowed water. When the amount of rainwater in the overflow trough 432 reaches a preset value, the control valve body 434 opens, directing the overflowed rainwater from the overflow trough 432 into the drainage system through the discharge pipe 435. This prevents contamination of the purified rainwater caused by the continuous connection between the overflow pipe 431 and the drainage system. At the same time, it can also ensure that the temporary storage body 41 is filled with water, increasing the water storage capacity. Furthermore, the overflow pipe 431 extends horizontally, alleviating the problem of persistently high pressure caused by overflow after the temporary storage body 41 is filled with rainwater. The rainwater purification structure may include a control mechanism electrically connected to the control valve body 434 and the liquid level gauge 433. The control mechanism includes a control console for manual control and a display for displaying relevant structural parameters, facilitating manual control when necessary.

[0055] like Figure 1 、 Figure 3 and Figure 4 As shown, water storage pipe 42 is optionally provided below overflow pipe 431, with the vertical height of water storage pipe 42 being lower than connecting pipe 31. Water storage pipe 42 is lower than overflow pipe 431 and connecting pipe 31, making it easier to drain purified rainwater from temporary storage body 41 to a predetermined area. This improves utilization while facilitating the emptying of temporary storage body 41 and alleviating secondary contamination caused by prolonged water storage that cannot be emptied. Water storage pipe 42 is connected to a predetermined area to store water for use when needed; the predetermined area can be an area capable of water storage or a structure such as a water storage tank.

[0056] It can be understood that the rainwater purification structure also includes necessary structures for connection, support, driving, limiting, sealing, valve body and control functions so that the rainwater purification structure can operate normally; the parameters such as the shape, size, material and setting quantity of each part of the rainwater purification structure can be determined according to needs as long as the corresponding functions can be achieved.

[0057] The implementation principle of a rainwater purification structure for sponge city construction in the embodiment of the present application is as follows: the first filtering mechanism 1 realizes pre-filtration of rainwater, and the inclined slope 11 can realize the convergence and diversion of rainwater, so that rainwater can more easily flow to the second filtering mechanism 2 at the bottom of the slope 11, thereby improving the rainwater purification efficiency; a plurality of blocking members 12 distributed on the slope 11 can realize the preliminary interception of impurities in the rainwater, thereby reducing the larger impurities in the rainwater; then the rainwater flows into the second filtering mechanism 2, and the coarse filter component 22 in the filter cavity 21 first performs coarse filtering on the rainwater to preliminarily filter the impurities in the rainwater, and then the fine filter component 23 performs fine filtering on the rainwater, further filtering the rainwater, reducing the impurity content in the rainwater, and improving the purification degree of the rainwater; Afterwards, the purified rainwater is transported to the temporary storage body 41 through the connecting pipe 31 to realize the storage of rainwater, and the purified rainwater in the temporary storage body 41 can be transported to a predetermined area for storage through the water storage pipe 42, so as to realize the effective utilization of rainwater; since the coarse filter component 22 and the fine filter component 23 are relatively independent, and the coarse filter component 22 and the filter cavity 21, and the fine filter component 23 and the filter cavity 21 are all detachably connected, when the second filter mechanism 2 needs to be replaced or cleaned, the coarse filter component 22 and the fine filter component 23 can be easily removed from the filter cavity 21, which is convenient for cleaning the filter cavity 21, the coarse filter component 22 and the fine filter component 23 respectively, or replacing the coarse filter component 22 and the fine filter component 23, which helps to reduce the difficulty of cleaning.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A rainwater purification structure for sponge city construction, characterized in that: include: A first filtering mechanism (1) comprises a slope (11) and a plurality of blocking members (12), wherein the plurality of blocking members (12) are distributed on the slope (11); A second filtering mechanism (2) comprises a filtering cavity (21), a coarse filtering assembly (22) and a fine filtering assembly (23), wherein the upper end of the filtering cavity (21) is connected to the lower end of the slope (11), the coarse filtering assembly (22) and the fine filtering assembly (23) are relatively independent, and both the coarse filtering assembly (22) and the fine filtering assembly (23) are detachably connected to the filtering cavity (21), and the coarse filtering assembly (22) is arranged above the fine filtering assembly (23); The conveying mechanism (3) comprises a connecting pipe (31), wherein a first end of the connecting pipe (31) is connected to a lower end of the filter cavity (21); The temporary storage mechanism (4) comprises a temporary storage body (41) and a water storage pipe (42), wherein the temporary storage body (41) is arranged on one side of the second filtering mechanism (2), the second end of the connecting pipe (31) is connected to the temporary storage body (41), and the water storage pipe (42) is connected to the temporary storage body (41), and the water storage pipe (42) is used to output rainwater in the temporary storage body (41).

2. The rainwater purification structure for sponge city construction according to claim 1 is characterized in that: The coarse filter assembly (22) comprises a coarse filter cylinder and a coarse filter element, the coarse filter cylinder is slidably connected to the filter cavity (21), the coarse filter element is arranged in the coarse filter cylinder, and a plurality of coarse filter holes (221) are provided on the coarse filter cylinder; the fine filter assembly (23) comprises a fine filter cylinder and a fine filter element, the fine filter cylinder is slidably connected to the filter cavity (21), the fine filter element is arranged in the fine filter cylinder, and a plurality of fine filter holes (231) are provided on the fine filter cylinder. The filtration accuracy of the fine filter element is higher than that of the coarse filter element, and the diameter of the fine filter hole (231) is smaller than the diameter of the coarse filter hole (221).

3. The rainwater purification structure for sponge city construction according to claim 2 is characterized in that: The coarse filter cartridge comprises a first containing body (222) and a first cover (223), wherein the first cover (223) is detachably connected to the upper end of the first containing body (222), and the coarse filter element is installed in the first containing body (222); the fine filter cartridge comprises a second containing body (232) and a second cover (233), wherein the second cover (233) is detachably connected to the upper end of the second containing body (232), and the fine filter element is installed in the second containing body (232).

4. The rainwater purification structure for sponge city construction according to claim 2 is characterized in that: The inner peripheral wall of the filter cavity (21) is provided with a first slide groove (211) and a second slide groove (212), and the first slide groove (211) and the second slide groove (212) are circumferentially staggered. A first slider (224) is provided on the outer periphery of the coarse filter cylinder, and a second slider (234) is provided on the outer periphery of the fine filter cylinder. The first slider (224) is slidably connected to the first slide groove (211), and the second slider (234) is slidably connected to the second slide groove (212).

5. The rainwater purification structure for sponge city construction according to claim 4 is characterized in that: A first clamping member (225) is provided on the first slider (224), a first end of the first clamping member (225) is connected to the first slider (224), and a second end of the first clamping member (225) is used to clamp the upper end of the filter cavity (21); a second clamping member (235) is provided on the second slider (234), a first end of the second clamping member (235) is connected to the second slider (234), and a second end of the second clamping member (235) is used to clamp the upper end of the filter cavity (21).

6. The rainwater purification structure for sponge city construction according to claim 5 is characterized in that: The first clamping member (225) includes a first flexible portion (2251) and a first clamping portion (2252), one end of the first flexible portion (2251) is connected to the first slider (224), the first clamping portion (2252) is provided at the other end of the first flexible portion (2251), and the first clamping portion (2252) is mounted above the first slide groove (211); the second clamping member (235) includes a second flexible portion (2351) and a second clamping portion (2352), one end of the second flexible portion (2351) is connected to the second slider (234), the second clamping portion (2352) is provided at the other end of the second flexible portion (2351), and the second clamping portion (2352) is mounted above the second slide groove (212).

7. The rainwater purification structure for sponge city construction according to claim 1 is characterized in that: The conveying mechanism (3) comprises a sewage pipe (32), a telescopic member (33) and a moving assembly (34); the sewage pipe (32) is connected to the lower end of the filter cavity (21); the sewage pipe (32) is arranged on one side of the connecting pipe (31); a relief portion is provided at the lower end of the filter cavity (21); the movable ends of the moving assembly (34) and the telescopic member (33) are both movably arranged in the relief portion; the movable end of the telescopic member (33) is connected to the moving assembly (34); the telescopic member (33) drives the moving assembly (34) to move in the relief portion; the moving assembly (34) is used to selectively block the sewage pipe (32); and the movable end of the telescopic member (33) is used to selectively block the connecting pipe (31).

8. The rainwater purification structure for sponge city construction according to claim 7 is characterized in that: The moving assembly (34) includes a moving cavity (341), an elastic member (342), a blocking member (343) and a pushing member (344). The moving cavity (341) is provided on a side of the sewage pipe (32) away from the connecting pipe (31). The moving cavity (341) extends horizontally. The first end of the elastic member (342) is connected to the bottom of the side of the moving cavity (341) away from the sewage pipe (32). The second end of the elastic member (342) is connected to the first end of the blocking member (343). When the elastic member (342) is in the initial state, the blocking member (343) blocks the sewage pipe (32), the second end of the blocking member (343) is connected to the first end of the pushing member (344), the cross-sectional area of the pushing member (344) is smaller than the flow area of the connecting pipe (31), and the movable end of the telescopic member (33) is used to push the pushing member (344) to move horizontally, thereby driving the blocking member (343) to compress the elastic member (342), so that the blocking member (343) is connected to the sewage pipe (32).

9. The rainwater purification structure for sponge city construction according to claim 1 is characterized in that: The temporary storage mechanism (4) further includes an overflow assembly (43), the overflow assembly (43) including an overflow pipe (431), an overflow trough (432), a liquid level gauge (433), a control valve body (434) and a discharge pipe (435), the first end of the overflow pipe (431) being connected to the temporary storage body (41), the first end of the overflow pipe (431) being spaced apart from the top of the temporary storage body (41) at a preset distance, the overflow trough (432) being provided on one side of the temporary storage body (41), the overflow pipe (431) being connected to the top of the temporary storage body (41), ... The second end of the discharge pipe (435) is connected to the overflow trough (432), the liquid level meter (433) is arranged in the overflow trough (432), the first end of the discharge pipe (435) is connected to the bottom of the overflow trough (432), the control valve body (434) is arranged at the first end of the discharge pipe (435), the control valve body (434) is electrically connected to the liquid level meter (433), the control valve body (434) is used to control the on-off of the discharge pipe (435), and the second end of the discharge pipe (435) is connected to the drainage system.

10. The rainwater purification structure for sponge city construction according to claim 9 is characterized in that: The water storage pipe (42) is provided below the overflow pipe (431), and the vertical height of the water storage pipe (42) is lower than that of the connecting pipe (31).

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