A rainwater collection, purification, treatment and reuse system

Abstract

The present invention relates to the technical field of rainwater collection and reuse, and specifically to a rainwater collection, purification, treatment and reuse system, comprising a rainwater discarding device, a rainwater purification device and a water storage device. The rainwater discarding device comprises an inlet pipe, a diversion chamber and a diversion mechanism. The diversion mechanism comprises a through hole 1 formed in the wall of the water inlet pipe, a flow-retarding member disposed in the through hole 1, a cylinder vertically disposed outside the diversion chamber, a sliding column slidably disposed in the cylinder, a drainage hole that passes the sliding column up and down, an elastic member 1 disposed between the sliding column and the inner bottom wall of the cylinder, an inlet branch pipe connecting the upper inner cavity of the cylinder with the through hole 1, a sewage outlet disposed at the bottom of the diversion chamber, a blocking block for blocking the sewage outlet, and a U-shaped rod connected to the sliding column at one end and the blocking block at the other end. The rainwater purification device comprises a purification chamber and a filter element, and the water storage device comprises a water storage tank. This solution can effectively remove severely polluted water bodies in the early stage of rainfall and collect and utilize cleaner rainwater in the later stage.

Description

Technical Field

[0001] The present invention relates to the technical field of rainwater collection and reuse, and in particular to a rainwater collection, purification, treatment and reuse system. Background Art

[0002] As a relatively abundant water resource, collecting and utilizing rainwater can effectively alleviate the serious shortage of water resources in cities, and can also effectively prevent and alleviate urban waterlogging problems.

[0003] Patent application publication number CN 105130055 B discloses a rainwater collection, purification, and reuse system. The system comprises a rainwater collection and purification component: a reservoir connected to a rainwater wastewater filter and buried underground; an underground rainwater purification unit connected to the reservoir via an inlet pipe and a pressure relief return pipe, and equipped with an outlet pipe; a clear water tank connected to the outlet pipe of the underground rainwater purification unit and connected to a tap water supply pipe; and a water supply system for supplying water to various water systems and backwashing the reservoir's water storage module. In practical applications, the treated water produced by this solution is of good quality and can be used for car washing, landscaping, landscaping, toilet flushing, and other purposes. However, it has the following disadvantages: after the heavily polluted rainwater is discarded, in order to collect cleaner rainwater, a larger water flow pressure is needed to drive the float downward and close the sewage outlet. However, in reality, when the above solution is adopted, if it rains lightly for a long time, the impact force of the water flow will continue to be very small. At this time, the hydraulic impact force generated by the water flow cannot force the float to close the sewage outlet, and the rainwater collection function cannot be achieved. Another situation is that if there is a sudden heavy rain, the impact force of the water flow in the initial stage will also be very large, and the float will also close the sewage outlet at the beginning, causing a large amount of heavily polluted rainwater in the initial stage to enter the subsequent rainwater collection and treatment equipment, increasing the operating burden of the subsequent equipment and may cause the water body finally collected to fail to meet the relevant use requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a rainwater collection, purification, treatment and reuse system to solve the problem that the above-mentioned prior art cannot collect rainwater during light rain and cannot effectively realize the initial rainwater discharge during heavy rain.

[0005] In order to solve the above technical problems, a basic solution adopted by the present invention is: to provide a rainwater collection, purification, treatment and reuse system, including a rainwater discarding device, a rainwater purification device connected to the rainwater discarding device and a water holding device connected to the rainwater purification device; the rainwater discarding device includes an inlet pipe, a diversion cavity connected to the inlet pipe and a diversion mechanism for controlling the flow direction of rainwater in the diversion cavity, the inlet pipe is obliquely arranged above the diversion cavity, and the diversion mechanism includes a through hole opened on the wall of the inlet pipe 1. A flow-retarding member disposed in the first through-hole, a cylinder vertically disposed outside the diverter cavity, a sliding post slidably disposed in the cylinder, a drain hole penetrating the sliding post up and down, an elastic member 1 disposed between the sliding post and the inner bottom wall of the cylinder, a water inlet branch connecting the upper inner cavity of the cylinder with the first through-hole, a sewage outlet disposed at the bottom of the diverter cavity, a blocking block disposed in the diverter cavity corresponding to the sewage outlet for blocking the sewage outlet, and a U-shaped rod connected at one end to the sliding post and at the other end to the blocking block;

[0006] The rainwater purification device includes a purification chamber connected to the upper inner cavity of the diversion chamber and a filter element arranged in the purification chamber for filtering rainwater;

[0007] The water holding device comprises a water holding tank communicated with the purification chamber and used for holding filtered rainwater.

[0008] In the above basic solution, when there is no rainfall, the elastic member 1 causes the slide column to be located at the upper part of the cylinder, causing the blocking block to move away from the sewage outlet, leaving the sewage outlet open. Rainwater at the initial stage of rainfall enters the diversion chamber and is discharged outward through the open sewage outlet. When rainfall flows through the water inlet pipe, due to the flow-retarding member provided in the through hole 1, the rainwater will flow into the cylinder at a certain rate through the through hole 1 and accumulate above the slide column. After a certain period of time, when the water above the slide column accumulates to a certain depth, the slide column overcomes the elastic force of the elastic member 1 and slides downward under the pressure of the water. The U-shaped rod connected to the slide column synchronously drives the blocking block downward to block the sewage outlet. This ensures that the heavily polluted initial rainwater is discharged through the sewage outlet at the beginning of rainfall, while the cleaner rainwater in the later stage enters the diversion chamber and the purification chamber for purification before being stored in the water storage tank for reuse.

[0009] Furthermore, the diversion mechanism further includes a limiting unit, which includes a vertical slideway provided along the axis of the slide post, a slider sealingly and slidingly connected to the inner wall of the vertical slideway, a transverse slideway 1 penetrating the side wall of the slide post in the radial direction of the slide post, a limiting rod 1 provided in the transverse slideway 1, a groove 1 recessed in the inner wall of the cylinder corresponding to the limiting rod 1, a transverse slideway 2 penetrating the side wall of the slide post in the radial direction of the slide post, a limiting rod 2 provided in the transverse slideway 2, a groove 2 recessed in the inner wall of the cylinder corresponding to the limiting rod 2, and a compression spring 2 provided between the slider and the inner bottom wall of the vertical slideway;

[0010] The upper end of the vertical slide passes through the slide column, and the bottom of the vertical slide is provided with an air vent that connects the lower inner cavity of the vertical slide with the outside of the slider. The horizontal slide 1 and the horizontal slide 2 are both stepped holes, and the limit rod 1 and the limit rod 2 are both telescopic rods. An annular stopper 1 is convexly provided on the limit rod 1, and a spring 1 is arranged on the outer surface of the limit rod 1. One end of the spring 1 is fixedly connected to the annular stopper 1, and the other end of the spring 1 is fixedly connected to the bottom wall of the large hole section of the horizontal slide 1. An annular stopper 2 is convexly provided on rod 2, and a spring 2 is provided outside the limit rod 2. One end of the spring 2 is fixedly connected to the annular stopper 2, and the other end of the spring 2 is fixedly connected to the bottom wall of the large hole section of the horizontal slide 2. The groove 2 is located in the space below the groove 1, and the lower part of the slider is provided with an inclined surface 1 corresponding to the limit rod 1 and an inclined surface 2 corresponding to the limit rod 2; the upper end of the compression spring 2 is fixedly connected to the slider, and the lower end of the compression spring 2 is fixedly connected to the inner bottom wall of the vertical slide.

[0011] In the above scheme, when the sliding column and the sliding block are both in their uncompressed original positions so that the compression spring 1 and the compression spring 2 are both in an uncompressed state, the lower part of the inclined surface 1 contacts the first end of the limiting rod 1 and causes the second end of the limiting rod 1 to extend into the groove 1. Under the elastic force of the spring 2, the first end of the limiting rod 2 contacts the lower part of the inclined surface 2 and causes the second end of the limiting rod 2 to retract into the transverse slide 2. When water flows into the space above the sliding column in the cylinder through the water inlet branch pipe, the sliding block gradually squeezes the compression spring 2 and slides downward under the gradually increasing water pressure, causing the inclined surface 1 to gradually move away from the transverse slide 1. Under the elastic force of the spring 1, the limiting rod 1 gradually moves toward the direction close to the sliding block, causing the second end of the limiting rod 1 to gradually leave the groove 1. At this time, under the obstruction of the limiting rod 1, the sliding column has no When the cam is in a closed position, the second end of the limit rod is pressed against the inner wall of the vertical slideway, and the design makes the discharge rate of the drain hole lower than the water inlet rate of the water inlet branch pipe. After a certain period of time, when the water body gathers to a certain depth in the space above the slide column, the slider slides downward until the limit rod 1 is completely retracted into the horizontal slideway 1, so that the slide column slides downward and drives the blocking block downward through the U-shaped rod. When the slide column slides downward to align the limit rod 2 with the groove 2, the second end of the limit rod 2 extends into the groove 2, and the slide column stops sliding down. At this time, the blocking block blocks the sewage outlet, and the later rainwater gathers in the diversion cavity and eventually flows to the purification cavity for purification.

[0012] Furthermore, the lower end of the cylinder is open, and the lower end of the cylinder is detachably connected to a limiting ring.

[0013] Furthermore, the elastic member 1 includes a compression spring 1, which is vertically arranged, with the upper end of the compression spring 1 connected to the bottom of the sliding column and the lower end of the compression spring 1 connected to the limiting ring.

[0014] Furthermore, the flow-delaying member includes cotton yarn, and the cotton yarn is filled in the first through hole.

[0015] Furthermore, the bottom of the diversion chamber is configured to be in an inverted cone shape for settling and collecting sediment.

[0016] Furthermore, the filter element includes filter sand.

[0017] Furthermore, a coarse filter is provided at the upper port of the water inlet pipe to coarsely filter rainwater to prevent large-volume garbage from entering the water inlet pipe.

[0018] Furthermore, a filter is provided at the port of the through hole 1 close to the inner cavity of the water inlet pipe.

[0019] The present invention has at least the following beneficial effects:

[0020] Since a slow-flow component is provided in the through hole 1, no matter how big the rainfall is, when the rainwater flows through the water inlet pipe, the water will enter the space above the sliding column in the cylinder through the through hole 1 at the same flow rate. Therefore, it takes the same amount of time for the rainwater to enter the through hole at the beginning before the sliding column slides downward and finally causes the blocking block to block the sewage outlet, so that the rainwater in the initial stage of rainfall is discharged through the sewage outlet and the subsequent cleaner rainwater is gathered in the diversion cavity and flows into the purification cavity; when the rainfall stops, the sliding column will automatically and quickly reset to collect the rainwater for the next time and discard the rainwater in the initial stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 The figure is a structural diagram of a rainwater collection, purification, treatment and reuse system according to the present invention.

[0023] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0024] Figure 3 for Figure 2 Enlarged view of part C in the middle.

[0025] Figure 4 for Figure 3 Enlarged view of part D in the middle.

[0026] Figure 5 for Figure 1 Enlarged view of part B in the middle.

[0027] Figure 6 This is another structural schematic diagram of a rainwater collection, purification, treatment and reuse system of the present invention.

[0028] Figure 7 for Figure 6 Enlarged view of middle part E.

[0029] Figure 8 for Figure 4 Schematic diagram of the structure of the middle limit rod.

[0030] Figure 9 for Figure 4 Schematic diagram of the structure of the middle limit rod 2.

[0031] The meanings of the reference numerals in the accompanying drawings are:

[0032] Rainwater collection tanks-10;

[0033] Water inlet pipe-11; through hole 1-110; cotton yarn-111; water inlet branch pipe-112; filter screen-113; coarse filter screen-114;

[0034] Diversion chamber-12; sewage outlet-121; blocking block-122;

[0035] Partition-13;

[0036] Cylinder-14; Groove 1-141; Groove 2-142; Limiting ring-143;

[0037] Sliding column 15; bleed hole 150; vertical slideway 151; slider 152; inclined surface 1521; inclined surface 2522; transverse slideway 153; limiting rod 1531; outer cylinder 15311; inner rod 15312; return spring 15313; annular stopper 1532; spring 1533; transverse slideway 254; limiting rod 2541; outer cylinder 25411; inner rod 25412; return spring 25413; annular stopper 2542; spring 2543; bleed hole 155;

[0038] Compression spring 1-16; U-shaped rod-17; Compression spring 2-18;

[0039] Purification chamber-21; filter sand-22;

[0040] Water tank-30; Pipeline-301. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0043] A rainwater collection, purification, treatment and reuse system in this embodiment is as follows: Figure 1-Figure 7As shown, it includes a rainwater discarding device, a rainwater purification device connected to the rainwater discarding device and a water holding device connected to the rainwater purification device; the rainwater discarding device includes an inlet pipe 11, a diversion chamber 12 connected to the inlet pipe 11 and a diversion mechanism for controlling the flow direction of rainwater in the diversion chamber 12, the inlet pipe 11 is tilted above the diversion chamber 12, the diversion mechanism includes a through hole 110 opened on the wall of the water inlet pipe 11, a slow-flow member arranged in the through hole 110, a cylinder 14 vertically arranged outside the diversion chamber 12, a sliding column 15 slidably arranged in the cylinder 14, a discharge hole 150 that passes through the sliding column 15 up and down, and a flow regulating device 110 provided on the sliding column 11. 5 and the inner bottom wall of the cylinder 14; an inlet branch pipe 112 connecting the upper inner cavity of the cylinder 14 with the through hole 110; a sewage outlet 121 provided at the bottom of the diverter cavity 12; a blocking block 122 provided in the diverter cavity 12 corresponding to the sewage outlet 121 for blocking the sewage outlet 121; and a U-shaped rod 17 connected at one end to the slide post 15 and at the other end to the blocking block 122; the rainwater purification device includes a purification chamber 21 communicating with the upper inner cavity of the diverter cavity 12 and a filter element provided in the purification chamber 21 for filtering rainwater; and the water storage device includes a water storage tank 30 communicating with the purification chamber 21 for storing filtered rainwater.

[0044] like Figure 1 As shown, a rainwater collection box 10 for collecting rainwater is divided into the diversion chamber 12 and the purification chamber 21 by a vertically arranged partition 13. The height of the partition 13 is less than the height of the rainwater collection box 10 so that the upper inner chambers of the diversion chamber 12 and the purification chamber 21 are connected to each other. The bottom of the diversion chamber 12 is set to an inverted cone shape which is conducive to collecting and discharging sediment. The sewage outlet 121 is set at the lowest point of the inverted cone. The filter element includes filter sand 22 arranged in the purification chamber 21 for filtering impurities in rainwater. The bottom inner chamber of the purification chamber 21 is connected to the bottom inner chamber of the water tank 30 through a pipe 301.

[0045] The water inlet pipe 11 is a circular pipe. The water inlet pipe 11 is arranged above the diversion chamber 12. The lower end of the water inlet pipe 11 is connected to the diversion chamber 12. The upper end of the water inlet pipe 11 is provided with a coarse filter 114 for coarsely filtering rainwater to prevent large-volume garbage from entering the water inlet pipe 11. The through hole 110 connects the inner and outer spaces of the water inlet pipe 11 along the radial direction of the water inlet pipe 11. The through hole 110 is arranged at the part of the water inlet pipe 11 where water is most likely to flow through. Figure 1 、 Figure 5As shown, a filter screen 113 is provided at the port of the inner cavity of the through hole 110 near the water inlet pipe 11, and the flow-delaying member includes cotton yarn 111, which is filled in the through hole 110 to achieve the purpose of stabilizing the flow rate of water through the through hole 110. The upper end of the water inlet branch pipe 112 is sealed and connected to the through hole 110, and the lower end of the water inlet branch pipe 112 extends into the cylinder 14.

[0046] like Figures 1 to 4As shown, the cylinder 14 is a vertically arranged circular cylinder with an open lower end. The cylinder 14 is fixedly connected to the rainwater collection box 10. The lower end of the cylinder 14 is detachably connected to a circular limiting ring 143. Specifically, an external thread can be provided on the outer wall of the limiting ring 143, and an internal thread can be provided on the lower inner wall of the cylinder 14. The limiting ring 143 and the cylinder 14 can be connected by threads. The slide column 15 is a cylindrical body that is sealed and slidably matched with the inner wall of the cylinder 14. A compression spring 16 is coaxially arranged at the bottom of the slide column 15. The upper end of the compression spring 16 is connected to the bottom of the slide column 15, and the lower end of the compression spring 16 is connected to the limit ring 143. A vertical slide 151 is arranged along the axis of the slide column 15. The upper end of the vertical slide 151 passes through the slide column 15. The bottom of the vertical slide 151 is provided with an air vent 155 that connects the lower inner cavity of the vertical slide 151 with the outside of the slider 152. The radial direction of 15 is provided with a transverse slideway 153 that connects the vertical slideway 151 with the external space of the slide column 15. The transverse slideway 153 is a stepped hole. A limit rod 1531 is slidably provided in the transverse slideway 153. The limit rod 1531 is a telescopic rod. An annular stopper 1532 is convexly provided on the limit rod 1531. A spring 1533 is provided on the outer surface of the limit rod 1531. One end of the spring 1533 is fixedly connected to the annular stopper 1532. The other end of the spring 1533 is fixedly connected to the transverse slideway 1531. The bottom wall of the large hole section of 53 is fixedly connected, and a groove 141 corresponding to the limit rod 1531 is recessed on the inner wall of the cylinder 14; a transverse slide 154 is further provided along the radial direction of the slide column 15 to connect the vertical slide 151 with the external space of the slide column 15, and the axis of the transverse slide 154 and the axis of the transverse slide 153 are located on the same horizontal plane. The transverse slide 154 is also a stepped hole, and a limit rod 1541 is slidably provided in the transverse slide 154, and the limit rod 1541 is also a telescopic rod. A second annular stopper 1542 is convexly provided on the second limiting rod 1541, and a second spring 1543 is provided on the outer surface of the first limiting rod 1531. One end of the second spring 1543 is fixedly connected to the second annular stopper 1542, and the other end of the second spring 1543 is fixedly connected to the bottom wall of the large hole section of the second transverse slide 154. A second groove 142 corresponding to the second limiting rod 1541 is recessed on the inner wall of the cylinder 14. The second groove 142 is located on the inner wall of the cylinder 14 below the first groove 141 and is corresponding to the second limiting rod 1541.

[0047] The vertical slide 151 is sealed and slidably connected to the slider 152. The slider 152 is a cylinder that is sealed and slidably matched with the vertical slide 151. The lower outer wall of the slider 152 is provided with an inclined surface 1521 corresponding to the limiting rod 1531 and an inclined surface 1522 corresponding to the limiting rod 2 1541. A compression spring 2 18 is vertically provided below the slider 152. The upper end of the compression spring 2 18 is fixedly connected to the slider 152, and the lower end of the compression spring 2 18 is fixedly connected to the inner bottom wall of the vertical slide 151.

[0048] The U-shaped rod 17 is a rigid member. One end of the U-shaped rod 17 is coaxially arranged with the sliding column 15 , and the other end of the U-shaped rod 17 is coaxially arranged with the sewage outlet 121 .

[0049] The first limiting rod 1531 and the second limiting rod 1541 are both conventional telescopic rods. Figure 8 、 Figure 9 As shown, the limiting rod 1531 includes an outer cylinder 15311, an inner rod 15312 slidably connected to the inner wall of the outer cylinder 15311, and a return spring 15313 arranged between the inner bottom wall of the outer cylinder 15311 and the inner rod 15312, and the annular stopper 1532 is arranged on the outer cylinder 15311. The limiting rod 2 1541 includes an outer cylinder 2 15411, an inner rod 2 15412 slidably connected to the inner wall of the outer cylinder 2 15411, and a return spring 2 15413 arranged between the inner bottom wall of the outer cylinder 2 15411 and the inner rod 2 15412, and the annular stopper 2 1542 is arranged on the outer cylinder 2 15411.

[0050] In this embodiment, Figure 1-Figure 5 As shown, when there is no rainfall, the compression spring 16 causes the slide column 15 to be located in the upper part of the cylinder 14, causing the blocking block 122 to leave the drain outlet 121, and the drain outlet 121 is in an open state. Rainwater at the initial stage of rainfall enters the diversion chamber 12 and is discharged outward from the opened drain outlet 121; when the rainfall rainwater flows through the water inlet pipe 11, since a slow flow member is provided in the through hole 110, the rainwater will flow into the cylinder 14 at a certain rate through the through hole 110 and gather above the slide column 15. After a certain period of time, when the water above the slide column 15 gathers to a certain depth, the slide column 15 overcomes the elastic force of the compression spring under the pressure of the water and slides downward, and the U-shaped rod 17 connected to the slide column 15 synchronously drives the blocking block 122 to move downward to block the drain outlet 121. Thus, the severely polluted initial rainwater is discharged from the sewage outlet 121 at the beginning of rainfall, while the relatively clean rainwater in the later stage is collected in the diversion chamber 12 and flows over the partition 13 into the purification chamber 21 for filtration and purification, and then enters the water tank 30 for storage for reuse.

[0051] In more detail, when there is no rain, the sliding column 15 and the sliding block 152 are both in their original uncompressed positions so that the compression spring 16 and the compression spring 2 18 are both in an uncompressed state. The lower portion of the inclined surface 1521 contacts the outer cylinder 15311 of the limiting rod 1531 and causes the outer end of the inner rod 15312 to extend into the groove 141. Under the elastic force of the spring 2 1543, the outer cylinder 2 15411 of the limiting rod 2 1541 contacts the lower portion of the inclined surface 2 1522 and causes the inner rod 2 15412 to retract into the transverse slideway 2. 154; when water flows into the space above the sliding column 15 in the cylinder 14 through the water inlet branch pipe 112, the slider 152 gradually squeezes the compression spring 2 18 and slides downward under the gradually increasing water pressure, so that the inclined surface 1521 gradually moves away from the horizontal slideway 153, and under the elastic force of the spring 1533, the limiting rod 1531 gradually moves toward the slider 152, so that the outer end of the inner rod 15312 of the limiting rod 1531 gradually leaves the groove 141. When the inner rod 15312 is not completely out of the groove 141, the sliding column 15 is blocked by the limiting rod 1531. As the slider 152 gradually presses the compression spring 18 and slides downward, the inclined surface 1522 gradually approaches the horizontal slideway 154, and the inclined surface 1522 gradually presses the outer tube 15411 of the limiting rod 1541, so that the spring 1543 is in a contracted state. At this time, the outer end of the inner rod 15412 in the limiting rod 1541 begins to press the inner wall of the vertical slideway 151. The design makes the discharge rate of the drain hole 150 smaller than the water inlet rate of the water inlet branch 112. After a certain period of time, when the water accumulates to a certain depth in the space above the sliding column 15, the slider 15 2 slides downward until the inner rod 15312 of the limiting rod 1531 is completely retracted into the transverse slide 153, allowing the sliding column 15 to slide downward and drive the blocking block 122 downward through the U-shaped rod 17. When the sliding column 15 slides downward until the inner rod 15412 of the limiting rod 1541 is aligned with the second groove 142, the outer end of the inner rod 15412 extends into the second groove 142, and the sliding column 15 stops sliding downward. At this time, the blocking block 122 blocks the sewage outlet 121, and the subsequent rainwater gathers in the diversion chamber 12 and overflows the partition 13 to flow into the purification chamber 21 for purification.

[0052] After the blocking block 122 blocks the sewage outlet 121, when it rains continuously, the space above the slide column 15 will be filled with water. When the rain stops, water no longer enters the space above the slide column 15, and the water in the space above the slide column 15 gradually flows out through the drainage hole 150. Under the elastic force of the second compression spring 18, the slider 152 gradually slides upward, so that the limiting rod 1531 is squeezed by the inclined surface 1521 and the inner rod 2 15412 of the limiting rod 2 1541 gradually retracts. In the horizontal slide 154, when the inner rod 15412 of the limit rod 1541 is fully retracted into the horizontal slide 154, the sliding column 15 slides upward under the elastic force of the compression spring 16 and drives the blocking block 122 to move upward through the U-shaped rod 17 to open the sewage outlet 121 so that the next rainwater can be collected and the initial stage of rainwater discharge can be carried out. After the sewage outlet 121 is opened, the sediment accumulated at the bottom of the diversion chamber 12 is discharged by the sewage outlet 121.

[0053] The present invention has at least the following beneficial effects:

[0054] Since a flow-retarding member is provided in the through hole 110, no matter how heavy the rainfall is, when rainwater flows through the water inlet pipe 11, the water will enter the space above the slide column 15 in the cylinder 14 through the through hole 110 at the same flow rate. Therefore, it takes the same amount of time after the rainwater enters the through hole 110 before the slide column 15 slides downward and finally causes the blocking block 122 to block the sewage outlet 121, so that the rainwater in the initial stage of rainfall is discharged through the sewage outlet 121 and the subsequent cleaner rainwater is gathered in the diversion chamber 12 and flows to the purification chamber 21; when the rainfall stops, the slide column 15 will automatically and quickly reset to collect the next rainwater and perform the initial stage of rainwater discharge.

[0055] The above are only embodiments of the present invention, and the common knowledge such as the specific structure and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A rainwater collection, purification, treatment and reuse system, comprising a rainwater discarding device, a rainwater purification device connected to the rainwater discarding device, and a water storage device connected to the rainwater purification device, characterized in that: The rainwater discharge device includes an inlet pipe, a diversion chamber connected to the water inlet pipe, and a diversion mechanism for controlling the flow direction of rainwater in the diversion chamber, the water inlet pipe is obliquely arranged above the diversion chamber, and the diversion mechanism includes a through hole 1 opened in the pipe wall of the water inlet pipe, a slow-flow member arranged in the through hole 1, a cylinder vertically arranged outside the diversion chamber, a sliding column slidably arranged in the cylinder, a discharge hole that passes through the sliding column up and down, an elastic member 1 arranged between the sliding column and the inner bottom wall of the cylinder, an inlet branch pipe that connects the upper inner cavity of the cylinder with the through hole 1, a sewage outlet arranged at the bottom of the diversion chamber, a blocking block corresponding to the sewage outlet and arranged in the diversion chamber for blocking the sewage outlet, and a U-shaped rod with one end connected to the sliding column and the other end connected to the blocking block; The rainwater purification device includes a purification chamber connected to the upper inner cavity of the diversion chamber and a filter element arranged in the purification chamber for filtering rainwater; The water holding device includes a water holding tank connected to the purification chamber for holding filtered rainwater; The diversion mechanism further includes a limiting unit, which includes a vertical slideway provided along the axis of the slide post, a slider sealingly and slidingly connected to the inner wall of the vertical slideway, a transverse slideway 1 penetrating the side wall of the slide post in the radial direction of the slide post, a limiting rod 1 provided in the transverse slideway 1, a groove 1 recessed in the inner wall of the cylinder corresponding to the limiting rod 1, a transverse slideway 2 penetrating the side wall of the slide post in the radial direction of the slide post, a limiting rod 2 provided in the transverse slideway 2, a groove 2 recessed in the inner wall of the cylinder corresponding to the limiting rod 2, and a compression spring 2 provided between the slider and the inner bottom wall of the vertical slideway; The upper end of the vertical slide passes through the slide column, and the bottom of the vertical slide is provided with an air vent that connects the lower inner cavity of the vertical slide with the outside of the slider. The horizontal slide 1 and the horizontal slide 2 are both stepped holes, and the limit rod 1 and the limit rod 2 are both telescopic rods. An annular stopper 1 is convexly provided on the limit rod 1, and a spring 1 is arranged on the outer surface of the limit rod 1. One end of the spring 1 is fixedly connected to the annular stopper 1, and the other end of the spring 1 is fixedly connected to the bottom wall of the large hole section of the horizontal slide 1. An annular stopper 2 is convexly provided on rod 2, and a spring 2 is provided outside the limit rod 2. One end of the spring 2 is fixedly connected to the annular stopper 2, and the other end of the spring 2 is fixedly connected to the bottom wall of the large hole section of the horizontal slide 2. The groove 2 is located in the space below the groove 1, and the lower part of the slider is provided with an inclined surface 1 corresponding to the limit rod 1 and an inclined surface 2 corresponding to the limit rod 2; the upper end of the compression spring 2 is fixedly connected to the slider, and the lower end of the compression spring 2 is fixedly connected to the inner bottom wall of the vertical slide.

2. The rainwater collection, purification, treatment and reuse system according to claim 1 is characterized by: The lower end of the cylinder is open, and the lower end of the cylinder is detachably connected to a limiting ring.

3. The rainwater collection, purification, treatment and reuse system according to claim 2 is characterized by: The elastic member 1 includes a compression spring 1, which is vertically arranged. The upper end of the compression spring 1 is connected to the bottom of the sliding column, and the lower end of the compression spring 1 is connected to the limiting ring.

4. The rainwater collection, purification, treatment and reuse system according to claim 1 is characterized by: The flow-slowing member includes cotton yarn, and the cotton yarn is filled in the first through hole.

5. The rainwater collection, purification, treatment and reuse system according to claim 1 is characterized by: The bottom of the diversion cavity is configured to be in an inverted cone shape.

6. The rainwater collection, purification, treatment and reuse system according to claim 1 is characterized by: The filter element includes filter sand.

7. The rainwater collection, purification, treatment and reuse system according to claim 1 is characterized by: A coarse filter is provided at the upper port of the water inlet pipe to coarsely filter rainwater and prevent large-volume garbage from entering the water inlet pipe.

8. The rainwater collection, purification, treatment and reuse system according to claim 1 is characterized by: A filter is provided at the port of the through hole 1 close to the inner cavity of the water inlet pipe.

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