Rainwater collecting and draining well and rainwater draining integrated system

Abstract

The application discloses a rainwater collecting and abandoning well and a rainwater collecting and abandoning integrated system. The rainwater collecting and abandoning well comprises a well base (1), an abandoning receiving port (2), a collecting well body (3), a water outlet receiving port (4), a water inlet receiving port (5), a floating ball pool (6), a filter pipe network (7), a check valve (8), a flow valve (9), an emptying hole I (10), a sealing ball (11), a lever (12), a floating ball (13) and a shunt pipe (14). The application has the advantages of simple structure, energy-saving function, low failure rate, convenient maintenance and long service life. According to different abandoning flow of different rainfall and rainfall time, the opening and closing of the abandoning port are automatically controlled by the floating ball and the sealing ball system. The application has the advantages of accurate abandoning control and accurate abandoning and shunting, and can avoid problems of insufficient or excessive abandoning flow.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rainwater treatment, and particularly relates to a rainwater collection and runoff well and a rainwater collection and runoff integrated system. BACKGROUND

[0002] Rainwater should be reasonably recycled and utilized as an important water resource. Water resource crisis caused by urbanization and industrialization is increasingly serious, and atmospheric and ground pollution affects the quality of rainwater. In the early stage of rainfall, rainwater dissolves particles and gaseous pollutants in the atmosphere, and after falling to the ground, rainwater carries a large amount of soil silt particles, leaves and other floating pollutants under the scouring action of surface runoff, so that the pollution degree of the early stage rainwater is higher, even higher than that of domestic sewage. Therefore, when collecting rainwater, runoff devices are needed to discard the early stage rainwater with high pollution degree, and then collect and utilize clean rainwater. In the existing rainwater collection, the runoff device has the following problems: (1) the runoff volume is difficult to control, and the runoff volume is insufficient or excessive; (2) when there are too many floating objects, the runoff device is easily blocked and cannot discard runoff; and (3) part of rainwater remains in the device after rainfall, and it is difficult to ensure the quality of the next cycle of collected rainwater.

[0003] The published patent "An integrated intelligent runoff well for collecting sewage and rainwater", publication number CN111042297B, relies on the gravity of the early stage rainwater to control the movable plate, and then controls the runoff of rainwater. In the case of continuous light rain, the runoff is always in the state of runoff. In the case of early stage heavy rain, the runoff volume is insufficient.

[0004] The published patent "Rainwater runoff method and device based on fluid mechanics and lever principle", publication number CN105839757B, the grid is installed on the upper end of the water inlet pipe, and cannot filter the early stage rainwater entering the runoff well. Floating objects easily block the sealing ball and the drainage hole of the hollow valve plate, causing the runoff to fail.

[0005] The published patent "A buoyancy type rainwater collection and runoff device and a runoff method", publication number CN114908857A, the sealing ball is continuously closed after rainfall, and it is difficult to empty the rainwater in the sediment chamber, which affects the quality of the next cycle of collected clean rainwater. SUMMARY

[0006] The purpose of the present application is to provide a rainwater collection and runoff well and a rainwater collection and runoff integrated system to solve the problems of the existing runoff device, such as difficult to control the runoff volume, easy to block the runoff device and poor quality of collected rainwater.

[0007] In order to achieve the above purpose, the present application provides the following technical scheme:

[0008] A rainwater collecting and overflow well comprises a well base, an overflow receiving port, a well body, a water outlet receiving port, a water inlet receiving port, a floating ball pool, a filter pipe network, a check valve, a flow valve, an emptying hole I, a sealing ball, a lever, a floating ball and a shunt pipe.

[0009] The overflow receiving port is arranged on one side of the bottom of the well base, and the flow valve and the check valve are mounted on the overflow receiving port; the emptying hole I is arranged on the overflow receiving port; the well body is welded to the well base; the water outlet receiving port is arranged on the well body on the same side as the overflow receiving port, and the water inlet receiving port is arranged on the well body away from the water outlet receiving port, and the mounting position of the water outlet receiving port is not higher than that of the water inlet receiving port; the filter pipe network is connected to the water outlet end of the water inlet receiving port.

[0010] The floating ball pool is arranged below the water inlet receiving port and comprises a water inlet, an emptying hole II, a sealing cover, a duckbill valve and a partition plate; the water inlet is arranged on one side of the bottom of the floating ball pool, and the sealing cover is arranged on the top of the floating ball pool; the partition plate is arranged horizontally in the floating ball pool, the duckbill valve is mounted on the partition plate, and the emptying hole II is arranged on the floating ball pool above the partition plate.

[0011] One end of the shunt pipe is connected to the water inlet receiving port, and the other end is connected to the floating ball pool.

[0012] The lever is vertically fixed to the well base; one end of the lever is connected to the floating ball arranged in the floating ball pool through a connecting rod, and the other end is connected to the sealing ball through a connecting rod, and the sealing ball is arranged at the water inlet of the overflow receiving port.

[0013] Flow valves are also mounted on the emptying hole I, the emptying hole II and the shunt pipe; the part of the well body below the water outlet receiving port and the well base form an overflow pool.

[0014] Preferably, the connecting rod and the sealing cover are sealed by a silica gel sealing ring; the silica gel sealing ring is snap sealed with the sealing cover and multi-stage serrated sealed with the connecting rod; the lever has a waist hole at both ends, and the connecting rod is hinged to the waist hole of the lever.

[0015] Preferably, the overflow receiving port is composed of a small pipe diameter end and a large pipe diameter end, the large pipe diameter end is located in the well base, and the small pipe diameter end penetrates through the well base; the large pipe diameter end is provided with a water inlet, and the water inlet is provided with a sealing ball.

[0016] Preferably, the water inlet provided on the large pipe diameter end has two modes:

[0017] One mode is that the water inlet faces upward, the connection between the water inlet and the large pipe diameter end is provided with a pipe with a gradually decreasing pipe diameter from top to bottom, and the sealing ball is located in the water inlet above the pipe;

[0018] The other mode is that the water inlet is flush with the overflow receiving port, the connection between the water inlet and the overflow receiving port is provided with a pipe with a gradually decreasing pipe diameter from right to left, and the sealing ball is located in the overflow receiving port.

[0019] Preferably, the diameter of the shunt pipe is greater than the diameter of the emptying hole II.

[0020] Preferably, a filter screen is installed at the water inlet of the shunt pipe, and the diameter of the shunt pipe is 16-32 mm.

[0021] Preferably, the diameter of the emptying hole I is less than 8 mm.

[0022] The application also provides a rainwater collection and shunt integrated system, wherein a basic unit is formed by a rainwater inlet, a shunt well, a rainwater well and a water infiltration well, the shunt well is the rainwater collection and shunt well described above, the shunt well serves as an intermediate hub and is connected with the rainwater inlet, the rainwater well and the water infiltration well through pipes, the rainwater wells are connected with each other through pipes, the water infiltration wells are connected with each other through pipes, and the rainwater inlets are installed separately or in series according to specific conditions.

[0023] The application has the following advantages:

[0024] (1) According to different shunt flow rates of different rainfall sizes and rainfall times, the opening and closing of the shunt opening are automatically controlled by the floating ball sealing ball system, the shunt control is accurate, the shunt is accurate, and problems such as insufficient shunt flow or excessive shunt flow are avoided;

[0025] (2) The filter pipe network is used at the water inlet, the filter area is large, the filter effect is good, more than 80% of the floating objects and large-particle pollutants in the collected rainwater are filtered, and the blockage of the shunt device is effectively avoided;

[0026] (3) The floating ball pool, the shunt pool and the filter pipe network have a water flow energy dissipation effect, which can reduce the impact and stirring of water flow on the rainwater in the shunt pool, and ensure the collection of clean rainwater;

[0027] (4) The shunt device has a simple structure, is durable and corrosion-resistant, is reliable and stable in operation, has a low cost, and is easy to maintain;

[0028] (5) The floating ball sealing ball system uses hydraulic control to open and close the shunt, is automatically reset, is reliable in sealing, has high sensitivity in use, can effectively shunt the initial rainwater, and collects clean rainwater in the later period;

[0029] (6) The filter pipe network is detachable, and is easy to clean and maintain in the later period;

[0030] (7) The shunt inlet is provided with a check valve, which effectively prevents the backflow of sewage;

[0031] (8) Multiple visible flow valves are used for control, which can adjust different shunt flow rates of different rainfall sizes, rainfall times, regions and seasons;

[0032] (9) The application has a simple structure, no measurement, electric elements and mechanisms, energy-saving function, extremely low failure rate, easy maintenance and long service life;

[0033] (10) The rainwater drainage system of the present application has good drainage effect, and can remove 70-80% of pollutants in initial rainwater, effectively controlling rainwater pollutants entering the main rainwater pipe network or river;

[0034] (11) The rainwater drainage system of the present application can automatically discharge pollutants, reduce the amount of silt entering the sewage pipe network, and reduce the cost and burden of sewage treatment;

[0035] (12) The rainwater drainage system of the present application can be used for roof rainwater drainage, large-area hard landscape and road rainwater drainage, and other purposes of filtration and drainage. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a sectional view of the drainage well pattern 1 of the present application;

[0037] Figure 2 is a sectional view of the drainage well pattern 2 of the present application;

[0038] Figure 3 is a sectional view of the floating ball pool pattern 1;

[0039] Figure 4 is a sectional view of the floating ball pool pattern 2;

[0040] Figure 5 、 Figure 6 and Figure 7 is a schematic view of the rainwater drainage integrated system;

[0041] Figure 8 is a sectional view of the sealing mode of the connecting rod and the sealing cover. DETAILED DESCRIPTION

[0042] Embodiments of the present application will now be described with reference to the accompanying drawings. Those skilled in the art will appreciate that the following embodiments are illustrative only and should not be taken in a limiting sense. Unless specifically noted, technical, connection relationships or conditions not mentioned in the embodiments are in accordance with the techniques, connection relationships, conditions described in the literature in the art or in accordance with the product instructions. The materials, instruments or equipment not mentioned by the manufacturer are all conventional products that can be obtained by purchase.

[0043] In the description of the embodiments of the present application, it should be noted that unless otherwise specifically defined and limited, the terms "mounting", "connection", "arrangement" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application should be understood according to the specific circumstances.

[0044] Example 1

[0045] In combination Figures 1-4 As shown in the drawings, the rainwater collecting and draining well provided by the present application comprises a well base 1, a draining receiving port 2, a closed well body 3, a water outlet receiving port 4, a water inlet receiving port 5, a floating ball pool 6, a filter pipe network 7, a check valve 8, a flow valve 9, an emptying hole I 10, a sealing ball 11, a lever 12, a floating ball 13 and a shunt pipe 14; the well base 1, the draining receiving port 2, the closed well body 3, the water outlet receiving port 4, the water inlet receiving port 5, the filter pipe network 7 and the shunt pipe 14 are all formed by hot-pressing molding of high-density polyethylene;

[0046] The draining receiving port 2 is arranged at one side of the bottom of the well base 1, and the flow valve 9 and the check valve 8 are mounted on the draining receiving port 2; the closed well body 3 is welded on the well base 1; the water outlet receiving port 4 is arranged on the closed well body 3 at the same side as the draining receiving port 2, and the water inlet receiving port 5 is arranged on the closed well body 3 away from the water outlet receiving port 4, and the installation position of the water outlet receiving port 4 is not higher than that of the water inlet receiving port 5; the filter pipe network 7 is connected with the water outlet end of the water inlet receiving port 5; the screen hole diameter of the filter pipe network 7 is 10-30 mm, which can filter relatively large rainwater floating objects, and the filter pipe network is a detachable structure;

[0047] The floating ball pool 6 is arranged below the water inlet receiving port 5 and comprises a water inlet 61, an emptying hole II 62, a sealing cover 63, a duckbill valve 64 and a partition plate 65; the water inlet 61 is arranged at one side of the bottom of the floating ball pool 6, and the sealing cover 63 is arranged at the top of the floating ball pool 6, specifically, the sealing cover 63 is in sealing cooperation with the floating ball pool 6 and is supported on the boss arranged at the top of the floating ball pool 6; the partition plate 65 is horizontally arranged in the floating ball pool 6 to divide the floating ball pool 6 into two parts, the duckbill valve 64 is mounted on the partition plate 65, and the emptying hole II 62 is arranged on the floating ball pool 6 above the partition plate 65; the sections of the floating ball pool 6 are formed by one-time molding by hot-pressing molding, and the sections are formed by welding, Figure 3 and Figure 4 are sectional views of two floating ball pool patterns;

[0048] One end of the shunt pipe 14 is connected with the water inlet receiving port 5, and the other end of the shunt pipe 14 penetrates through the sealing cover 63 and is connected to the floating ball pool 6, and the shunt pipe 14 is in sealing cooperation with the sealing cover 63;

[0049] The lever 12 is vertically fixed on the well base 1; one end of the lever 12 is connected with the floating ball 13 arranged in the floating ball pool 6 through a connecting rod, and the other end of the lever 12 is connected with the sealing ball 11 through a connecting rod, and the sealing ball 11 is arranged at the water inlet of the draining receiving port 2;

[0050] The flow valve 9 is also installed on the emptying hole I 10, the emptying hole II 62 and the shunt pipe 14, and the flow valve controls the flow by adjusting the opening of the valve core. The opening adjustment is visible, the volume is small, and the material is corrosion-resistant stainless steel, plastic or ceramic material. The part of the well body 3 below the water outlet receiving port 4 and the well seat 1 form a flow rejection pool 15. The flow rejection well is divided into three specifications: Φ1000mm, Φ1200mm and Φ1500mm. The well body height is greater than 1000mm, and the wall thickness is greater than 10mm.

[0051] Further optimization scheme, connecting rod and sealing cover 63 through silica gel sealing ring 66 sealing, such as Figure 8 The silica gel sealing ring 66 is snap sealed with the sealing cover 63, and the connecting rod is multi-stage serrated sealed. The lever 12 has a waist hole at both ends, and the connecting rod is hinged with the waist hole of the lever 12. When the lever 12 swings, one end of the floating ball connecting rod and the sealing ball connecting rod can slide in the direction of the lever, which can compensate for the arc trajectory at both ends when the lever swings, ensure the vertical or horizontal movement of the connecting rod, and ensure the sealing between the connecting rod and the sealing cover 63. Moreover, the sealing ball 11 is spherical, the tapered pipe valve seat is conical, and the sealing between the sealing ball and the valve seat is linear, which is reliable.

[0052] Specifically, the flow rejection receiving port 2 is composed of a small pipe diameter end and a large pipe diameter end. The large pipe diameter end is located in the well seat 1, and the small pipe diameter end penetrates through the well seat 1. The large pipe diameter end is provided with a water inlet, and the water inlet is provided with a sealing ball 11. The water inlet provided on the large pipe diameter end has two modes: one is that the water inlet faces upward, and the connection between the water inlet and the large pipe diameter end is provided with a pipe with a gradually decreasing pipe diameter from top to bottom. The sealing ball 11 is located in the water inlet above the pipe. Correspondingly, the lever 12 is horizontally arranged, as shown in Figure 1 Another is that the water inlet is flush with the flow rejection receiving port 2, and the connection between the water inlet and the flow rejection receiving port 2 is provided with a pipe with a gradually decreasing pipe diameter from right to left. The sealing ball 11 is located in the flow rejection receiving port 2. Correspondingly, the lever 12 is inclinedly arranged, as shown in Figure 2 .

[0053] The floating ball 13 and the sealing ball 11 are matched. The buoyancy of the floating ball 13 is greater than the gravity of the sealing ball 11. The floating ball 13 is a hollow ball made of polypropylene plastic or stainless steel material with light density and corrosion resistance. The sealing ball 11 is made of rubber, plastic or other materials with good corrosion resistance and sealing performance. The diameter of the sealing ball 11 is greater than the minimum pipe diameter of the pipe with a gradually decreasing pipe diameter at the flow rejection receiving port 2.

[0054] Further optimization scheme, the pipe diameter of the shunt pipe 14 is greater than the hole diameter of the emptying hole II 62. The flow difference caused by the hole diameter difference can meet the requirement that the floating ball rises after 10 minutes, and then the sealing ball moves downward to close the flow rejection port. A filter screen is installed at the water inlet of the shunt pipe 14. The pipe diameter of the shunt pipe 14 is 16-32mm. The rainwater is preferentially shunted to the floating ball pool from the water inlet, and then enters the flow rejection pool. The hole diameter of the emptying hole I 10 is less than 8mm.

[0055] Further optimization scheme, the position of the flow-accepting interface 2 is as close to the well seat bottom as possible, pattern one (such as Figure 1 ) The emptying hole 110 is opened at the left side of the central axial position of the flow-accepting interface 2, pattern two (such as Figure 2 ) The emptying hole 110 is opened at the middle of the radial position of the flow-accepting interface 2; when the rainfall stops and the water-accepting interface 4 stops discharging water, the sealing ball 11 is still in the sealed state, and the remaining rainwater in the device cannot be discharged through the flow-accepting interface 2, and the role of the emptying hole 110 is to discharge the remaining rainwater in the device, so that the sealing ball 11 and the floating ball 13 system reset, and wait for the next cycle; the flow-accepting interface 2 is connected with the sewage pipe network, the emptying hole 110 discharges the remaining rainwater in the flow-accepting pool to the sewage pipe network, the floating ball pool is communicated with the flow-accepting pool through the emptying hole 62, the liquid level of the floating ball pool drops with the liquid level of the flow-accepting pool, and the rainwater in the floating ball pool is discharged to the flow-accepting pool and is discharged to the sewage pipe network together with the rainwater in the flow-accepting pool.

[0056] The working principle of the present application is that the opening and closing of the sealing ball are controlled by the lowering and rising of the floating ball in the floating ball pool under the action of the liquid level. Different initial rainfall intensity is different, and the time required for flow-accepting is also different. The floating ball pool is supplied with water by the flow divider when the rainfall intensity is small, and the flow-accepting time is relatively long. The floating ball pool is supplied with water by the flow divider and the duckbill valve when the rainfall intensity is large, and the flow-accepting time is relatively short.

[0057] The work of the present application mainly includes three processes of flow-accepting, collecting and emptying:

[0058] (1) Flow-accepting: In the stage of small initial rainfall intensity, the initial rainwater enters through the water-accepting interface, is mainly adjusted in flow by the flow divider and is collected into the floating ball pool, the rainwater in the floating ball pool is discharged into the flow-accepting pool through the emptying hole II, and the rainwater in the flow-accepting pool is discharged through the flow-accepting interface and is discharged to the sewage pipe network. Under the action of the diameter difference between the flow divider and the emptying hole II, the liquid level of the floating ball pool gradually rises, reaches the limit position after 10 minutes, the floating ball drives the sealing ball to close the flow-accepting port, and the initial rainwater flow-accepting is completed. In the stage of large initial rainfall intensity, the initial rainwater mainly enters the flow-accepting pool through the water-accepting interface, and a small part enters the floating ball pool through the flow divider. The rainwater in the flow-accepting pool is discharged through the flow-accepting interface and is discharged to the sewage pipe network. Since the flow-accepting pipe diameter is smaller than the water inlet pipe diameter, the liquid level of the flow-accepting pool gradually rises, and when the liquid level of the flow-accepting pool is higher than the liquid level of the floating ball pool, the rainwater is collected into the floating ball pool through the duckbill valve, so that the liquid level of the floating ball pool rises, the flow-accepting port is closed, and the initial rainwater flow-accepting is completed. This process from opening to closing of the flow-accepting port is the flow-accepting process;

[0059] (2) Collecting: When the sealing ball is closed, the middle and late rainwater enters the rainwater main pipe network or river channel through the water-accepting interface, the flow divider and the duckbill valve continuously supply water to the floating ball pool, keep the stable sealing of the flow-accepting port, and continuously collect the clean rainwater in the middle and late stage;

[0060] (3) emptying: after the rainfall, the floating ball pool has no excess rainwater supplement, the emptying hole II gradually empties the water in the floating ball pool, the remaining rainwater in the flow-throwing pool is discharged from the emptying hole I, the flow-throwing well is reset, and the next cycle is waited.

[0061] Therefore, the rainwater collection and flow-throwing can be automatically flow-thrown according to the size of rainfall and rainfall time. The flow-throwing amount set value can be changed by adjusting the opening degree of each flow valve, adjusting the volume of the floating ball pool and the aperture ratio of the flow-dividing pipe and the emptying hole II.

[0062] The installation steps of the present application are as follows:

[0063] (1) On the well seat 1, the receiving opening is opened according to the position direction of the flow-throwing receiving port, and the flow-throwing receiving port 2 is welded;

[0064] (2) The check valve 8 and the flow valve 9 are installed on the flow-throwing receiving port 2;

[0065] (3) The sealing ball 11 and the floating ball 13 are connected to the lever 12 through the connecting rod;

[0066] (4) The floating ball pool 6 is installed, the lever 12 is installed, the floating ball 13 is placed in the floating ball pool 6, and the sealing ball 11 is placed at the water inlet of the flow-throwing receiving port 2;

[0067] (5) The receiving well body 3 is welded on the well seat 1;

[0068] (6) On the receiving well body 3, the receiving opening is opened according to the position direction of the water outlet receiving port, and the water outlet receiving port 4 is welded;

[0069] (7) On the receiving well body 3, the receiving opening is opened according to the position direction of the water inlet receiving port, and the water inlet receiving port 5 is welded;

[0070] (8) The flow-dividing pipe 14 is installed to communicate the water inlet receiving port 5 and the floating ball pool 6;

[0071] (9) The filter pipe network 7 is installed. According to the needs of transportation and other conditions, the welding assembly can be implemented on site.

[0072] Example 2

[0073] The application further provides a rainwater collection and integrated system. One basic unit is formed by a rainwater inlet, a collection well, a rainwater well and a water infiltration well. The collection well is the rainwater collection well in the embodiment 1. In the urban rainwater pipe network, the collection well is used as an intermediate hub and is connected with the rainwater inlet, the rainwater well and the water infiltration well through pipes. The rainwater wells are connected with each other through pipes. The water infiltration wells are connected with each other through pipes. The rainwater inlets are installed separately or in series according to specific conditions. Rainwater enters the rainwater inlets and is collected and stored through the rainwater wells under the action of the collection well. Part of the rainwater infiltrates into the underground water permeable layer through the water infiltration wells to supplement the underground water. One collection well can accommodate the inflow of rainwater from one or more rainwater inlets. The rainwater collection and integrated system can be flexibly configured according to the terrain, rainfall, rainwater pollution degree and the like. The rainwater collection and integrated system can be extended and combined by multiple basic units. As shown in Figure 5 、 Figure 6 and Figure 7 , in the drawings, W1-W7 are the codes of sewage well 1-sewage well 7, Y1-Y6 are the codes of rainwater well 1-rainwater well 6, the numbers are only used as codes, and the specific number can be increased or decreased according to the actual situation.

[0074] The above is only a preferred embodiment of the application and is not used to limit the application. Any slight modification, equivalent replacement and improvement made to the above embodiment according to the technical essence of the application should be included in the protection scope of the technical scheme of the application.

Claims

1. A rainwater collection sump, characterized in that, The well seat (1), the flow discarding connector (2), the well body (3), the water outlet connector (4), the water inlet connector (5), the floating ball pool (6), the filter pipe network (7), the check valve (8), the flow valve (9), the emptying hole I (10), the sealing ball (11), the lever (12), the floating ball (13) and the shunt pipe (14) are included. The flow discarding connector (2) is arranged on one side of the bottom of the well seat (1), and the flow valve (9) and the check valve (8) are mounted on the flow discarding connector (2); the emptying hole I (10) is arranged on the flow discarding connector (2); the well body (3) is welded on the well seat (1); the water outlet connector (4) is arranged on the well body (3) on the same side as the flow discarding connector (2), and the water inlet connector (5) is arranged on the well body (3) away from the water outlet connector (4), and the installation position of the water outlet connector (4) is not higher than that of the water inlet connector (5); the filter pipe network (7) is connected with the water outlet end of the water inlet connector (5). The floating ball pool (6) is arranged below the water inlet connector (5) and is composed of the water inlet (61), the emptying hole II (62), the sealing cover (63), the duckbill valve (64) and the partition plate (65); the water inlet (61) is arranged on one side of the bottom of the floating ball pool (6), and the sealing cover (63) is arranged on the top of the floating ball pool (6); the partition plate (65) is horizontally arranged in the floating ball pool (6), the duckbill valve (64) is mounted on the partition plate (65), and the emptying hole II (62) is arranged on the floating ball pool (6) above the partition plate (65). The shunt pipe (14) is connected with the water inlet connector (5) at one end and connected with the floating ball pool (6) at the other end. The lever (12) is vertically fixed on the well seat (1); one end of the lever (12) is connected with the floating ball (13) arranged in the floating ball pool (6) through a connecting rod, and the other end is connected with the sealing ball (11) through a connecting rod, and the sealing ball (11) is arranged at the water inlet of the flow discarding connector (2). The flow valves (9) are also mounted on the emptying hole I (10), the emptying hole II (62) and the shunt pipe (14); the part of the well body (3) below the water outlet connector (4) and the well seat (1) form the flow discarding pool (15).

2. A stormwater collection sump according to claim 1, characterised in that, The connecting rod and the sealing cover (63) are sealed by the silica gel sealing ring (66); the silica gel sealing ring (66) is clamped and sealed with the sealing cover (63) and is multi-stage serrated sealed with the connecting rod; the lever (12) has a waist hole at both ends, and the connecting rod is hinged with the waist hole of the lever (12).

3. A rainwater collection and overflow well according to claim 1, wherein, The flow discarding connector (2) is composed of a small pipe diameter end and a large pipe diameter end, the large pipe diameter end is located in the well seat (1), and the small pipe diameter end penetrates through the well seat (1); the large pipe diameter end is provided with a water inlet, and the water inlet is provided with the sealing ball (11).

4. A stormwater collection sump according to claim 3, characterised in that, There are two ways for the water inlet provided on the large pipe diameter end: One is that the water inlet faces upward, the connection between the water inlet and the large pipe diameter end is provided with a pipeline with a gradually decreasing pipe diameter from top to bottom, and the sealing ball (11) is located in the water inlet above the pipeline; The other is that the water inlet is flush with the flow discarding connector (2), the connection between the water inlet and the flow discarding connector (2) is provided with a pipeline with a gradually decreasing pipe diameter from right to left, and the sealing ball (11) is located in the flow discarding connector (2).

5. A rainwater collection and overflow well according to claim 1, wherein, The pipe diameter of the shunt pipe (14) is greater than the hole diameter of the emptying hole II (62).

6. A rainwater collection and overflow well according to claim 1, wherein, The shunt pipe (14) is provided with a filter screen at the water inlet.

7. A rainwater collection and overflow well according to claim 1 wherein, The drain hole I (10) has a hole diameter less than 8 mm.

8. A rainwater first flush integrated system characterised by, The basic unit is composed of a rainwater inlet, a flow rejection well, a rainwater well and a water infiltration well, the flow rejection well is the rainwater collection flow rejection well in claim 1 or 2 or 3, the flow rejection well serves as an intermediate hub and is connected with the rainwater inlet, the rainwater well and the sewage well through pipes, the rainwater wells are connected with each other through pipes, the sewage wells are connected with each other through pipes, and the rainwater inlets are installed separately or in series according to specific conditions.

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