Assembled rainwater overflow well for sponge city

Abstract

The utility model discloses a sponge city assembly type rainwater overflow well, and relates to the technical field of sponge city construction, a well body is connected with a rainwater overflow port well lid, a detachable sewage intercepting filler is arranged in the well body, and the detachable sewage intercepting filler is fixed through a stainless steel frame; by setting multi-level sewage interception measures, stage control over pollutants is achieved, and the pollutant control capacity of the rainwater overflow well is improved; a landscape pebble piling method is adopted, the abrupt feature of the rainwater overflow port is reduced, and the landscape effect of the rainwater overflow port of the sponge city is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sponge city construction, and in particular to an assembled rainwater overflow well for a sponge city. Background Art

[0002] The purpose of using rainwater overflow wells in green facilities of sponge city construction, such as sunken green spaces, is to achieve rainwater regulation and normal overflow removal on the site, while playing the role of precipitating suspended pollutants. At present, the rainwater overflow wells in the commonly used sunken green spaces adopt a vertical grate design, which improves the rainwater flow capacity. However, due to the designed water storage depth of the sunken green space, a natural sedimentation area is formed, and it is necessary to reduce the probability of suspended matter such as sediment entering the rainwater overflow well, which is similar to transferring the rainwater outlet on the road to the green space. The existing technology has poor pollutant interception capacity, which affects the effectiveness of the overflow well.

[0003] For example, Chinese patent CN214940816U, published on November 30, 2021, discloses a sponge city rainwater overflow outlet facility, comprising a square cast iron overflow outlet grate and a ash soil cushion layer, wherein a reinforced concrete support is arranged at the bottom of the square cast iron overflow outlet grate, and cement mortar is arranged at the bottom of the reinforced concrete support, and a concrete base plate is fixedly connected to the top of the ash soil cushion layer, and a sintered solid brick is fixedly connected to the outer ring of the top of the concrete base plate; the device adopts a square vertical grate cast iron overflow outlet grate, which increases the flow capacity of rainwater during heavy rain, and at the same time, with the help of the intercepting effect of the rainwater grate bars, it alleviates the blockage problem caused by fallen leaves of plants in the sunken green space, but the rainwater overflow outlet has a problem of being unable to intercept relatively fine impurities due to the large spacing between the bars, and siltation will occur in the long run. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing overflow well has a weak sewage interception capacity. A sponge city assembled rainwater overflow well is proposed, which adopts a detachable sewage interception filler and cooperates with a rainwater overflow well cover to greatly enhance the sewage interception capacity of the overflow well.

[0005] A further purpose of the utility model is to limit the overflow bucket and at the same time, by means of paving pebbles, to beautify the rainwater overflow outlet and alleviate conflicts between professions.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a sponge city assembled rainwater overflow well, the well body is connected to the rainwater overflow well cover, the well body is provided with a detachable sewage intercepting filler, and the detachable sewage intercepting filler is fixed by a stainless steel frame.

[0007] The invention discloses an assembled rainwater overflow well in a sponge city. The overflow well is mainly composed of a well body and a rainwater overflow well cover. A detachable sewage interception filler is arranged inside the well body. The detachable sewage interception filler is fixed by a stainless steel frame. When the detachable sewage interception filler needs to be replaced or cleaned, it is only necessary to take out the stainless steel frame to directly take out all the detachable sewage interception fillers. The rainwater overflow well cover can intercept larger pollutants such as branches and fallen leaves, while the detachable sewage interception filler can intercept smaller pollutants such as mud and sand, thereby greatly improving the sewage interception capacity while ensuring the rainwater flow rate.

[0008] Preferably, the detachable pollution interception filler includes a first pollution interception layer and a second pollution interception layer, the first pollution interception layer is located at the upper end of the second pollution interception layer, and the filler particle size in the second pollution interception layer is smaller than the filler particle size in the first pollution interception layer. The filler particle size of the upper first pollution interception layer is DN50mm-DN100mm, and the filler particle size of the lower second pollution interception layer is DN30mm-DN50mm, so as to realize the layered interception of pollutants.

[0009] Preferably, the rainwater overflow well cover comprises an overflow bucket and a well cover base, the well cover base is provided with a groove, the well cover base is fixed to the top of the well body, a limiting ring is provided at the bottom of the overflow bucket, and the overflow bucket and the well cover base are fixed by the groove and the limiting ring. The groove and the limiting ring fix the overflow bucket and the well cover base, making it easy to disassemble the two.

[0010] Preferably, the gap between the groove of the manhole cover base and the overflow bucket limiting ring is filled with pebbles. By paving the pebbles, the rainwater overflow outlet is landscaped to alleviate conflicts between professions.

[0011] Preferably, the well body is connected to a rainwater overflow pipe, a water outlet is provided on the side of the well body, the water outlet is connected to a water outlet perforated pipe, and the rainwater overflow pipe and the water outlet perforated pipe are perpendicular to each other. The rainwater overflow pipe and the water outlet perforated pipe can drain rainwater from the water storage chamber to prevent rainwater from overflowing.

[0012] Preferably, the overflow bucket is provided with a plurality of screen bars, which are arranged at intervals from the center of the overflow bucket in the circumferential direction, and drainage holes are provided between adjacent screen bars. The screen bars can intercept large-volume pollutants such as branches and leaves.

[0013] Preferably, the screen bar is provided with an arc segment, one end of the arc segment is connected to the first fixing ring, the other end of the arc segment is connected to the second fixing ring, the other side of the first fixing ring connected to the arc segment is connected to the horizontal segment, and the other side of the second fixing ring connected to the arc segment is connected to the vertical segment. The arc segment of the overflow bucket screen bar can make the overflow bucket higher than the horizontal plane, which can enhance the overall strength while reducing the inflow of soil.

[0014] Preferably, the well wall on the side of the well body is formed by brick stacking, and the well chamber base at the bottom of the well body is formed by concrete pouring. The well wall is in the form of permeable bricks or cement fired bricks, and the well chamber base is in the form of hard concrete foundation, and the concrete strength grade is C15.

[0015] The substantial effects of the utility model are as follows: the utility model sets up multi-level sewage interception measures to achieve stage control of pollutants and improve the pollutant control capacity of the rainwater overflow well; adopts an assembled filler installation form to create the rainwater overflow well cover and the well body, thereby improving the convenience of installation and operation of the rainwater overflow well; adopts a landscape pebble stacking technique to reduce the abrupt features of the rainwater overflow outlet and improve the landscape effect of the rainwater overflow outlet in the sponge city. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the layout diagram of the rainwater overflow well of the embodiment;

[0017] Figure 2 A top view of a rainwater overflow well in an embodiment;

[0018] Figure 3 is a front cross-sectional view of an embodiment;

[0019] Figure 4 is a side sectional view of an embodiment;

[0020] Figure 5 It is an enlarged view of the overflow bucket of the embodiment.

[0021] Among them: 1. Well body, 11. Well wall, 12. Well chamber base, 2. Rainwater overflow well cover, 21. Overflow bucket, 211. Horizontal section, 212. Arc section, 213. Vertical section, 214. First fixing ring, 215. Second fixing ring, 22. Well cover base, 3. Removable sewage intercepting filler, 31. First sewage intercepting layer, 32. Second sewage intercepting layer, 4. Rainwater overflow pipe, 5. Outlet perforated pipe, 6. Pebbles. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is further described below through specific embodiments and in conjunction with the accompanying drawings.

[0023] Embodiment one:

[0024] A sponge city assembled rainwater overflow well, such as Figure 1 and Figure 2As shown, it is mainly composed of five parts: a well body 1, a rainwater overflow well cover 2, a detachable sewage interception filler 3, a rainwater overflow pipe 4 and a water outlet perforated pipe 5. The rainwater overflow well is suitable for green landforms and is used to remove water from green land. The rainwater overflow well cover 2 is composed of a number of screen bars, and there are drainage holes between adjacent screen bars, through which rainwater can flow into the rainwater overflow well. Due to the obstruction of the screen bars, large debris such as branches and fallen leaves can be blocked outside the rainwater overflow well to prevent excessive accumulation of debris in the rainwater overflow well, thereby causing blockage and affecting the drainage effect of the rainwater overflow well. A detachable sewage interception filler 3 is arranged in the well body 1, and the detachable sewage interception filler 3 is fixed by a stainless steel frame. The bottom of the stainless steel frame contacts the bottom of the well body 1, and the top is flush with the horizontal plane of the well body 1 outlet. The part of the stainless steel frame for storing the detachable sewage interception filler 3 fits the inner wall of the well body 1, so that the rainwater flowing into the rainwater overflow well will pass through the detachable sewage interception filler 3, thereby removing small particles of debris that cannot be screened out by the rainwater overflow well cover 2. The rainwater overflow pipe 4 and the water outlet perforated pipe 5 can drain the rainwater inside the rainwater overflow well to avoid the phenomenon of rainwater overflow. In addition, the setting directions of the rainwater overflow pipe 4 and the water outlet perforated pipe 5 are perpendicular to each other, which maximizes the use of the water-drawing capacity of the land and improves the ability of the rainwater overflow well to drain the accumulated water.

[0025] like Figure 3 and Figure 4As shown, the well body 1 is mainly composed of a well wall 11 and a well chamber base 12. The well chamber base 12 is cast in one piece by hard concrete, and the concrete strength grade is C15. The well wall 11 is selected in combination with the groundwater level of the project implementation site, and can be in the form of permeable bricks or cement sintered bricks. The well wall 11 is provided with a rainwater overflow pipe 4 and a water outlet of the water outlet perforated pipe 5 near the bottom. The rainwater overflow well cover 2 includes an overflow bucket 21 and a well cover base 22. A plurality of screen bars are provided on the overflow bucket 21, and the screen bars start from the center of the overflow bucket 21 and are arranged circumferentially. The edge of the overflow bucket 21 is provided with a circle of limit rings perpendicular to the overflow bucket 21. The base of the well cover base 22 is fixed to the top of the well body 1. The diameter of the well cover base 22 is the same as the thickness of the well wall 11, and the well cover base 22 is completely consistent with the well body 1 when it is fixed to the top of the well body 1. The base 22 of the manhole cover is provided with a U-shaped groove upward, and the two sides of the groove are perpendicular to the bottom of the groove. The height of the limiting ring on the overflow bucket 21 is slightly higher than the side of the groove. When the overflow bucket 21 is covered on the base 22 of the manhole cover, the limiting ring on the overflow bucket 21 is stuck in the groove. The diameter of the overflow bucket 21 is larger than the inner wall diameter of the well body 1, and smaller than the outer wall diameter of the well body 1. Therefore, when the overflow bucket 21 is covered on the base 22 of the manhole cover, there is a gap between the limiting ring of the overflow bucket 21 and the sides of the groove. A number of pebbles 6 are placed in the gap between the limiting ring of the overflow bucket 21 and the sides of the groove, and the pebbles 6 are stacked to a position roughly parallel to the groove. The pebbles 6 stacked in the groove can limit the translation of the limiting ring of the overflow bucket 21 in the groove, and play a role in limiting the overflow bucket 21. At the same time, placing the pebbles 6 can make the rainwater overflow well fit in with the surrounding green space environment, reduce the abruptness of the rainwater overflow well, and improve the overall aesthetic effect of the green space.

[0026] The upper end of the stainless steel frame in the well body 1 is a filling area for the detachable sewage interception filler 3, which is used to fix the detachable sewage interception filler 3. The lower end is a support area, and the diameter of the support area is smaller than the inner diameter of the well body 1. Several water inlets are opened on the top of the stainless steel frame for the circulation of rainwater. A U-shaped handle is also provided in the middle of the top of the stainless steel frame, and the height of the U-shaped handle is lower than the side height of the groove of the well cover base 22. The filling area of ​​the detachable sewage interception filler 3 is divided into two parts, the upper part is the first sewage interception layer 31, and the lower part is the second sewage interception layer 32. The sewage interception fillers filled in the first sewage interception layer 31 and the second sewage interception layer 32 are different. The filler particle size of the upper first sewage interception layer 31 is DN50mm-DN100mm, and the filler particle size of the lower second sewage interception layer 32 is DN30mm-DN50mm, so as to realize the layered interception of pollutants. The second sewage interception layer 32 of the lower layer cooperates with the first sewage interception layer 31 of the upper layer to remove the debris in the rainwater to the maximum extent, avoid the accumulation of debris in the water storage area of ​​the well body 1, and thus reduce the water storage capacity. The top and bottom stainless steel frames of the first sewage interception layer 31 and the top and bottom stainless steel frames of the second sewage interception layer 32 in the filling area of ​​the detachable sewage interception filler 3 are provided with a plurality of drainage holes for the circulation of rainwater. When it is necessary to clean or replace the filling area of ​​the detachable sewage interception filler 3, open the overflow bucket 21 and lift out the entire stainless steel frame through the U-shaped handle.

[0027] The particle size of the pollution interception filler in the first pollution interception layer 31 of the upper layer is relatively large. Therefore, the gap in the first pollution interception layer 31 is relatively large, the diameter of the debris that can be intercepted is relatively large, and the interception effect on the debris with smaller diameter is relatively weak. The particle size of the pollution interception filler in the second pollution interception layer 32 of the lower layer is relatively small, and the gap between the pollution interception fillers is relatively large, which can better intercept the debris with smaller diameter. After filtering by the first pollution interception layer 31 and the second pollution interception layer 32, the impurities in the rainwater flowing into the rainwater overflow well will be basically removed, and there will be no phenomenon of impurity deposition, which ensures the working efficiency of the rainwater overflow well. In addition, the smaller the particle size of the pollution interception filler in the pollution interception filler filling area, the smaller the gap between the pollution interception fillers, the slower the speed of the water flow, and the slower the drainage efficiency of the overall rainwater overflow well. Therefore, the filling area of ​​the detachable pollution interception filler 3 is divided into two layers, the upper layer is the first pollution interception layer 31 filled with pollution interception fillers with larger particles, which can filter the impurities in the rainwater while ensuring the speed of the rainwater flowing through. Since the first pollution interception layer 31 has a large storage space, the first pollution interception layer 31 can be used as a buffer zone for rainwater to flow through, thereby avoiding a serious decline in the drainage efficiency of the rainwater overflow well due to the need to filter impurities in the rainwater. Therefore, the provision of the first pollution interception layer 31 can ensure that the drainage efficiency of the rainwater overflow well is guaranteed while removing impurities in the rainwater. The lower layer is a second pollution interception layer 32 filled with pollution interception fillers with smaller particles, which can ensure that impurities that may precipitate in the rainwater are completely removed. When the rainwater filtered by the first pollution interception layer 31 passes through the second pollution interception layer 32, the pollution interception fillers in the second pollution interception layer 32 will completely remove impurities such as soil in the rainwater. After the rainwater is filtered by the first and second waste interception layers 31 and 32, the flow rate will be greatly slowed down, and the pipe used to discharge the rainwater in the rainwater overflow well is perpendicular to the rainwater overflow well. Therefore, when the rainwater passes through the corner where the two intersect, the flow rate of the rainwater will be reduced. If there are impurities such as mud in the rainwater at this time, precipitation is easy to occur. Over time, the pipeline may be blocked. The pipeline is deeply buried at the bottom of the rainwater overflow well and is perpendicular to the rainwater overflow well. It is difficult to clear the blockage. The second waste interception layer 32 can effectively remove impurities with smaller diameters such as mud in the rainwater, thereby ensuring that the pipeline will not be blocked by impurities.

[0028] Below the second sewage interception layer 32 is a rainwater storage area for storing rainwater that has been buffered and filtered. The water storage area has a stainless steel frame support structure, which is provided with a number of water outlet holes so that the rainwater in the water storage area can flow freely. The well body 1 of the water storage area is provided with water outlet holes for a rainwater overflow pipe 4 and a water outlet perforated pipe 5. The diameter of the rainwater overflow pipe 4 is relatively large, which is equal to the height of the water storage area, while the diameter of the water outlet perforated pipe 5 is relatively small, and the water outlet hole of the water outlet perforated pipe 5 is located close to the top of the water storage area. When the rainwater passes through the purification of the first sewage interception layer 31 and the second sewage interception layer 32 and reaches the water storage area, it will flow out of the rainwater overflow pipe 4, thereby discharging the rainwater in the rainwater overflow well. When there is heavy rain and there is a lot of water accumulation, the rainwater in the water storage area may overflow, and the rainwater overflow pipe 4 cannot discharge the rainwater in the water storage area in time. At this time, the rainwater in the water storage area can be discharged through the water outlet perforated pipe 5, thereby improving the rainwater discharge efficiency of the rainwater overflow well.

[0029] like Figure 5 As shown, the overall structure of the overflow bucket 21 is formed by a plurality of interlaced screen bars. The center of the overflow bucket 21 is a small circular positioning ring, and each screen bar starts from the positioning ring and is equidistantly dispersed around the periphery. The positioning ring is hollow in the middle, and there are also hollow water holes between adjacent screen bars. There are also two fixed rings on the overflow bucket 21, namely the first fixed ring 214 and the second fixed ring 215. The diameter of the first fixed ring 214 is smaller than the diameter of the second fixed ring 215. The first fixed ring 214 and the second fixed ring 215 have the same center as the positioning ring. There are two types of screen bars on the overflow bucket 21, one is a screen bar composed of three parts: a horizontal section 211, a circular arc section 212 and a vertical section 213, and the other is a screen bar composed of only a circular arc section 212 and a vertical section 213. These two types of screen bars are arranged at intervals on the overflow bucket 21, that is, there is a screen bar composed of two sections between two adjacent screen bars composed of three sections. The upper end of the arc segment 212 is connected to the horizontal segment 211, and the lower end of the arc segment 212 is connected to the vertical segment 213. In addition, a first fixing ring 214 is provided at the position where the arc segment 212 is connected to the horizontal segment 211, and a second fixing ring 215 is provided at the position where the arc segment 212 is connected to the vertical segment 213. The provision of the first fixing ring 214 and the second fixing ring 215 can ensure the connection strength at the turning point on the screen bar and improve the overall strength of the overflow bucket 21. The vertical segment 213 together constitutes a limit ring on the overflow bucket 21, so the position where the second fixing ring 215 is located is the horizontal plane of the wellhead of the well body 1. Due to the presence of the arc segment 212, the height of the overflow bucket 21 will be higher than the horizontal plane, which is more conspicuous, thereby preventing others from stepping on it by mistake. Moreover, the design above the horizontal plane can make branches and leaves fall down under the influence of gravity, and will not accumulate on the overflow bucket 21, thereby affecting the efficiency of rainwater flowing into the overflow well.

[0030] In actual use, the rainwater overflow well can adopt different shapes, such as setting the wellhead to be round or square. The shape of the rainwater overflow well cover is set to a corresponding shape according to the shape of the wellhead. The color of the rainwater overflow well cover can be adjusted according to the surrounding environment, so that the color is more coordinated with the surrounding environment. The rainwater overflow well put into use needs to be cleaned regularly, or cleaned in time after a rainstorm. The cleaning content includes cleaning large pollutants on the surface of the overflow bucket and cleaning the internal detachable sewage interception filler to ensure the normal operation of the rainwater overflow well.

[0031] The utility model sets up multi-level sewage interception measures, utilizes the overflow bucket 21, the first sewage interception layer 31 and the second sewage interception layer 32 to intercept pollutants of different particles, realizes stage control of pollutants, and improves the pollutant control capacity of the rainwater overflow well; adopts assembled filler installation form to create the rainwater overflow well cover and the well body 1, improves the convenience of installation and operation of the rainwater overflow well, facilitates the installation and component replacement of the rainwater overflow well, and cleans the filling area of ​​the internal detachable sewage interception filler 3; adopts the landscape pebble 6 stacking technique to reduce the abrupt characteristics of the rainwater overflow port, improves the landscape effect of the sponge city rainwater overflow port, and makes the appearance of the rainwater overflow well more in line with the external environment.

[0032] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A sponge city assembled rainwater overflow well, comprising a well body, characterized in that: The well body is connected to the rainwater overflow well cover, and a detachable sewage interception filler is provided in the well body, and the detachable sewage interception filler is fixed by a stainless steel frame; The rainwater overflow well cover comprises an overflow hopper and a well cover base, and the gap between the groove of the well cover base and the limiting ring at the bottom of the overflow hopper is filled with pebbles.

2. The sponge city assembled rainwater overflow well according to claim 1 is characterized in that: The detachable pollution interception filler comprises a first pollution interception layer and a second pollution interception layer, the first pollution interception layer is located at the upper end of the second pollution interception layer, and the filler particle size in the second pollution interception layer is smaller than the filler particle size in the first pollution interception layer.

3. The sponge city assembled rainwater overflow well according to claim 1 is characterized in that: The manhole cover base is provided with a groove, the manhole cover base is fixed to the top of the well body, a limiting ring is provided at the bottom of the overflow bucket, and the overflow bucket and the manhole cover base are fixed by the groove and the limiting ring.

4. The sponge city assembled rainwater overflow well according to claim 1 is characterized in that: The well body is connected with a rainwater overflow pipe, a water outlet is arranged on the side of the well body, the water outlet is connected with a water outlet perforated pipe, and the rainwater overflow pipe and the water outlet perforated pipe are perpendicular to each other.

5. The sponge city assembled rainwater overflow well according to claim 3 is characterized in that: The overflow bucket is provided with a plurality of screen bars, which are arranged at intervals in the circumferential direction from the center of the overflow bucket, and drainage holes are provided between adjacent screen bars.

6. The sponge city assembled rainwater overflow well according to claim 5 is characterized in that: The screen bar is provided with an arc segment, one end of the arc segment is connected to the first fixing ring, the other end of the arc segment is connected to the second fixing ring, the other side of the first fixing ring connected to the arc segment is connected to the horizontal segment, and the other side of the second fixing ring connected to the arc segment is connected to the vertical segment.

7. A sponge city assembled rainwater overflow well according to claim 1, 2 or 3, characterized in that: The well wall on the side of the well body is formed by stacking bricks, and the well chamber base layer at the bottom of the well body is formed by pouring concrete.

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