Sponge city rainwater recycling and sewage intercepting system

Abstract

A sponge city rainwater recycling and sewage intercepting system comprises a rainwater gathering pipe, a safety flow dividing well, a sewage intercepting device, a flow abandoning device and a rainwater purifying device, rainwater sequentially enters the safety flow dividing well, the sewage intercepting device, the flow abandoning device and the rainwater purifying device through the rainwater gathering pipe, the structure of the sewage intercepting device is improved, the operation mode is changed, and the sewage intercepting device is recycled. And damageable accessories such as a metal spring and a floating ball are not needed any more, so that the service life is prolonged and the maintenance cost is reduced while the sewage interception function is met.

Description

Technical Field

[0001] The utility model relates to the technical field of sponge cities, and particularly relates to a rainwater reuse and pollution interception system for sponge cities. Background Technique

[0002] A sponge city refers to making full use of the functions of natural ecological underlying surfaces for rainfall infiltration, retention, storage, and discharge, as well as the natural purification effects of vegetation, soil, wetlands, etc. Then, through a combination of natural and artificial small-scale multiple source sponge design means, it can beautify the city while achieving the purpose of controlling rainwater runoff and pollution, thereby alleviating the pressure of urban waterlogging. The rainwater collection and utilization system is an important part of sponge city construction. It means that rainwater on the site is purified through sponge facilities (the reservoir is an underground structure, and the upper part is restored to natural landscape forms such as green spaces). The infiltrated rainwater and overflow rainwater enter the rainwater drainage pipeline and are stored in the water storage and collection and reuse system to collect rainwater and use it for the irrigation system in the park to meet the goal of rainwater resource reuse. During the dry season, river water is pumped from the river, purified and then stored in the reservoir as a supplementary water source for the irrigation system.

[0003] In the buried rainwater recycling system, the initial rainwater enters the rainwater storage tank after being discarded and filtered. After natural sedimentation and other methods in the storage tank, it can be used for green plant irrigation and domestic miscellaneous water for humans; however, generally, the initial rainwater contains a lot of impurities, and the rainwater after preliminary filtration through discard and filtration cannot directly form domestic miscellaneous water. Therefore, the equipment for pumping rainwater needs to process and purify the rainwater during the pumping process to reduce the problem that the impurities remaining in the rainwater after preliminary filtration may block the devices and pipelines for pumping rainwater.

[0004] In the existing technology, the designed discard and pollution interception devices usually use metal springs, floating balls, etc. to control the opening and closing of the sewage outlet, and there is a problem that the metal springs are prone to metal fatigue and failure, resulting in the need for frequent inspections and maintenance.

[0005] Therefore, it is necessary to improve the design of the pollution interception function of the rainwater reuse system to avoid pipeline blockage, reduce maintenance work, and extend the service life. Content of the Utility Model

[0006] In order to solve the above technical deficiencies, the utility model provides a rainwater reuse and pollution interception system for sponge cities.

[0007] Technical solution of the utility model: A rainwater reuse and pollution interception system for sponge cities, including a rainwater collection pipe, a safety diversion well, a pollution interception device, a flow diversion device, and a rainwater purification device. Rainwater enters the safety diversion well, the pollution interception device, the flow diversion device, and the rainwater purification device in sequence through the rainwater collection pipe. The pollution interception device includes a well body, a water inlet, a sewage outlet, a drainage outlet, and a seesaw mechanism. A partition plate passing through the center of the circle is arranged in the well body, and the partition plate divides the well body into a water inlet chamber and a water outlet chamber. A flow-through channel is arranged between the partition plate and the bottom of the well body, and the flow-through channel communicates the water inlet chamber and the water outlet chamber. A first hinge seat is arranged at the end of the partition plate facing the flow-through channel.

[0008] The water inlet and the sewage outlet are arranged on one side of the water inlet chamber, and the water outlet is located on one side of the water outlet chamber.

[0009] The seesaw mechanism includes a main connecting rod, a pair of secondary connecting rods, a first sliding door, and a second sliding door. Vertical sliding rails are arranged on the inner wall of the well body at the sewage outlet and the drainage outlet. The first sliding door and the second sliding door are respectively arranged in the vertical sliding rails at the sewage outlet and the drainage outlet, and make sliding fits in the opening and closing directions. The first sliding door and the second sliding door both include a closed end face adapted to the inner wall of the well body and a connecting end face opposite thereto, and a second hinge seat is arranged on the connecting end face.

[0010] The main connecting rod includes a water inlet end and a water outlet end. A first hinge hole is arranged in the middle section of the main connecting rod, and the first hinge hole is hinged to the first hinge seat. The pair of secondary connecting rods are respectively hinged to the water inlet end and the water outlet end, and are respectively hinged to the second hinge seats on the first sliding door and the second sliding door. A counterweight is arranged at the water outlet end.

[0011] Adopting the above technical solution, as shown in the attached Figure 2 description, when the rainfall is small, the water flow discharged from the water inlet is small, and the impact force formed is small. At this time, under the action of the counterweight, the main connecting rod inclines towards the water outlet chamber side, and the water outlet end pulls the secondary connecting rod and the second sliding plate to move vertically downward, being in a state of closing the water outlet. And the water inlet end face tilts vertically, driving the first sliding door away from the sewage outlet, being in a state of conducting the sewage outlet.

[0012] In the initial stage of rainfall, at this time, there are more sundries entering with the first wave of rainwater. After entering the well body, they are discharged from the sewage outlet.

[0013] When the rainfall increases and the water inflow at the water inlet increases, the impact force generated by the water flow gradually becomes greater than the weight of the counterweight. When falling, it impacts the water inlet end, causing the main connecting rod to rotate counterclockwise. The first sliding door moves downwards with it, closing the sewage outlet, while the second sliding door slides upwards to open the drainage outlet. At this time, the first wave of rainwater with sundries and dirt has been discharged, and the subsequent rainwater enters the drainage outlet and then enters the flow diversion device.

[0014] When a large amount of rainwater enters through the designed partition board, flow-through channel, water inlet chamber, and water outlet chamber, it first impacts on the partition board for buffering and energy dissipation.

[0015] A further setting of the present utility model: A receiving tray is provided at the water inlet end.

[0016] Adopting the above technical solution, by the receiving tray with an enlarged area, the contact area with the water flow is increased, making the force more significant.

[0017] A further setting of the present utility model: On the closed end faces of the first sliding door and the second sliding door, there are sealing rings with diameters larger than the sewage outlet and the drain outlet; on the closed end faces of the first sliding door and the second sliding door, there are sealing rings with diameters larger than the sewage outlet and the drain outlet; when the first sliding door and the second sliding door are in the positions of closing the sewage outlet and the drain outlet, the sewage outlet and the drain outlet are within the sealing rings.

[0018] Adopting the above technical solution, the sealing performance is increased by the provided sealing rings. After the water inflow increases and the well body is filled with water, the first and second sliding doors are subjected to the hydrostatic pressure from the center to the outside, and cooperate with the sealing rings to complete the closing.

[0019] A further setting of the present utility model: The rainwater purification device includes a PP module clean water tank, a submersible sewage pump, a lift pump, a reuse pump, a rainwater lift pipe, a sewage pipe, a rainwater reuse pipe, a tap water make-up pipe, and a backwashing pipeline. The PP module clean water tank is partitioned into a first purification chamber and a second purification chamber. The first purification chamber is separated into a submersible sewage working room and a lifting working room by a pp water storage module. The second purification chamber is a reuse working room. A submersible sewage pump, a lift pump, and a reuse pump are respectively arranged in the submersible sewage working room, the lifting working room, and the reuse working room, and all are provided with maintenance openings communicating with the ground;

[0020] The sewage pipe is connected to the submersible sewage pump, the rainwater lift pipe is connected to the lift pump and leads to the second purification chamber. The backwashing pipeline is arranged at the bottom of the first purification chamber and is connected to the rainwater reuse pipe. The tap water make-up pipe is connected to the second purification chamber.

[0021] The beneficial effect of the present utility model is that by transforming the structure of the sewage interception device and changing the operation mode, it no longer relies on vulnerable parts such as metal springs and float balls, thereby meeting the sewage interception function while extending the service life and reducing the maintenance cost. Description of the Drawings

[0022] Figure 1 is the structure of the embodiment of the present utility model Figure 1 ;

[0023] Figure 2 is the structure of the embodiment of the present utility model Figure 2 ;

[0024] Figure 3 The structure of the embodiment of the present utility model Figure 3 ;

[0025] Figure 4 The structure of the embodiment of the present utility model Figure 4 。

[0026] The reference numerals in the drawings are respectively: 11 - rainwater collection pipe, 12 - safety diversion well, 2 - sewage interception device, 21 - well body, 211 - inlet chamber, 212 - outlet chamber, 213 - flow-through channel, 214 - first hinge seat, 22 - water inlet, 23 - sewage outlet, 24 - drain outlet, 25 - partition plate, 26 - main connecting rod, 261 - counterweight, 262 - receiving tray, 27 - auxiliary connecting rod, 28 - first sliding door, 29 - second sliding door, 291 - vertical slide rail, 213 - flow-away device, 4 - rainwater purification device, 41 - clean water tank, 42 - submersible sewage pump, 43 - lift pump, 44 - reuse pump, 45 - rainwater lift pipe, 46 - sewage pipe, 47 - rainwater reuse pipe, 48 - tap water make-up pipe, 49 - backwashing pipeline.

[0027] To better illustrate this embodiment, some components in the drawings are omitted, enlarged or reduced, which do not represent the dimensions of the actual product. In addition, the drawings are only for illustrative purposes and should not be construed as a limitation of this patent. Detailed implementation manners

[0028] To make the technical solutions and their advantages of this application clearer, the technical solutions of this application will be further described clearly and completely below with reference to the drawings. It can be understood that the specific embodiments described herein are only partial embodiments of this application, which are only used to explain this application and not to limit this application. It should be noted that for the convenience of description, only the parts related to this application are shown in the drawings, and other related parts can refer to the normal design. Without conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0029] The following introduces the present utility model in detail with reference to the drawings. As Figures 1-4 shown

[0030] A sponge city rainwater reuse and pollution interception system includes a rainwater collection pipe 11, a safety diversion well 12, a pollution interception device 2, a flow diversion device 13, and a rainwater purification device 4. Rainwater enters the safety diversion well 12, the pollution interception device 2, the flow diversion device 13, and the rainwater purification device in sequence through the rainwater collection pipe 11. The pollution interception device 2 includes a well body 21, a water inlet 22, a sewage outlet 23, a water outlet 24, and a seesaw mechanism. A partition plate 25 passing through the center of the circle is arranged in the well body 21. The partition plate 25 divides the well body 21 into an inlet chamber 211 and an outlet chamber 212. An overflow channel 213 is arranged between the partition plate 25 and the bottom of the well body 21. The overflow channel 213 communicates with the inlet chamber 211 and the outlet chamber 212. A first hinge seat 214 is arranged at the end of the partition plate 25 facing the overflow channel 213. The water inlet 22 and the sewage outlet 23 are arranged on one side of the inlet chamber 211, and the water outlet is located on one side of the outlet chamber 212. The seesaw mechanism includes a main connecting rod 26, a pair of sub-connecting rods 27, a first sliding door 28, and a second sliding door 29. Vertical sliding rails 291 are arranged on the inner wall of the well body 21 at the sewage outlet 23 and the water outlet 24. The first sliding door 28 and the second sliding door 29 are respectively arranged in the vertical sliding rails 291 at the sewage outlet 23 and the water outlet 24, and make sliding fits in the opening and closing directions. The first sliding door 28 and the second sliding door 29 both include a closed end face adapted to the inner wall of the well body 21 and a connecting end face opposite thereto. A second hinge seat is arranged on the connecting end face.

[0031] The main connecting rod 26 includes a water inlet end and a water outlet end. A first hinge hole is arranged in the middle section of the main connecting rod 26. The first hinge hole is hinged to the first hinge seat 214. The pair of sub-connecting rods 27 are respectively hinged to the water inlet end and the water outlet end, and are respectively hinged to the second hinge seats on the first sliding door 28 and the second sliding door 29. A counterweight 261 is arranged at the water outlet end.

[0032] As shown in the attached Figure 2 description, when the rainfall is small, the water flow discharged from the water inlet 22 is small, and the impact force formed is small. At this time, under the action of the counterweight 261, the main connecting rod 26 inclines towards the outlet chamber 212 side. The water outlet end pulls the sub-connecting rod 27 and the second sliding plate to move vertically downward, and is in a state of closing the water outlet. And the water inlet end face tilts vertically, driving the first sliding door 28 away from the sewage outlet 23, and is in a state of conducting the sewage outlet 23.

[0033] In the initial stage of rainfall, at this time, there are more sundries entering with the first flush of rainwater. After entering the well body 21, they are discharged from the sewage outlet 23.

[0034] When the rainfall increases and the water output at the water inlet 22 increases, the impact force generated by the water flow gradually becomes greater than the weight of the counterweight 261. When falling, it impacts the water inlet end, causing the main connecting rod 26 to rotate counterclockwise. The first sliding door 28 moves downward with it, closing the sewage outlet 23, while the second sliding door 29 slides upward, opening the drain outlet 24. At this time, the rainwater with debris and dirt in the first pass has been discharged, and the subsequent rainwater enters the drain outlet 24 and enters the flow diversion device 13.

[0035] Through the designed partition plate 25, flow-through channel 213, water inlet chamber 211, and water outlet chamber 212, when a large flow of rainwater enters, it first impacts on the partition plate 25 for buffering and energy dissipation.

[0036] A receiving tray 262 is provided at the water inlet end.

[0037] By expanding the area of the receiving tray, the contact area with the water flow is increased, making the force more significant.

[0038] Sealing rings with diameters larger than those of the sewage outlet 23 and the drain outlet 24 are provided on the closing ends of the first sliding door 28 and the second sliding door 29; Sealing rings with diameters larger than those of the sewage outlet 23 and the drain outlet 24 are provided on the closing ends of the first sliding door 28 and the second sliding door 29; When the first sliding door 28 and the second sliding door 29 are in the positions of closing the sewage outlet 23 and the drain outlet 24, the sewage outlet 23 and the drain outlet 24 are within the sealing rings.

[0039] By providing the sealing rings to increase the sealing performance, after the water inflow increases and the well body 21 is filled with water, the first and second sliding doors 29 are subjected to the hydrostatic pressure from the center to the outside, and together with the sealing rings, the closing is completed.

[0040] The rainwater purification device 4 includes a PP module clean water tank 41, a submersible sewage pump 42, a lift pump 43, a reuse pump 44, a rainwater lift pipe 45, a sewage pipe 46, a rainwater reuse pipe 47, a tap water make-up pipe 48, and a backwashing pipeline 49. The PP module clean water tank is partitioned into a first purification chamber and a second purification chamber. The first purification chamber is separated into a submersible sewage working room and a lift working room by a pp water storage module 411. The second purification chamber is a reuse working room. A submersible sewage pump, a lift pump, and a reuse pump are respectively arranged in the submersible sewage working room, the lift working room, and the reuse working room, and all are provided with maintenance openings communicating with the ground;

[0041] The sewage pipe is connected to the submersible sewage pump, the rainwater lift pipe is connected to the lift pump and leads to the second purification chamber. The backwashing pipeline is arranged at the bottom of the first purification chamber and is connected to the rainwater reuse pipe. The tap water make-up pipe is connected to the second purification chamber.

[0042] By modifying the structure of the sewage interception device 2 and changing the operation mode, it no longer relies on vulnerable parts such as metal springs and floating balls, so as to meet the sewage interception function while extending the service life and reducing the maintenance cost.

[0043] It can be understood that for those skilled in the art, equivalent replacement or change of the technical solution and the inventive concept of the present utility model should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A rainwater recycling and sewage interception system for a sponge city, comprising a rainwater collection pipe, a safety diversion well, a sewage interception device, a flow abandonment device, and a rainwater purification device. Rainwater enters the safety diversion well, the sewage interception device, the flow abandonment device, and the rainwater purification device in sequence through the rainwater collection pipe, characterized in that: The sewage interception device comprises a well body, a water inlet, a sewage outlet, a drain outlet, and a seesaw mechanism. A partition plate passing through the center of a circle is arranged in the well body, and the partition plate divides the well body into a water inlet chamber and a water outlet chamber. A flow passage is arranged between the partition plate and the bottom of the well body, and the flow passage connects the water inlet chamber and the water outlet chamber. A first hinge seat is arranged at the end of the partition plate facing the flow passage. The water inlet and the sewage outlet are arranged on one side of the water inlet chamber, and the drainage outlet is located on one side of the water outlet chamber; The seesaw mechanism includes a main connecting rod, a pair of secondary connecting rods, a first sliding door, and a second sliding door. The inner wall of the well body is provided with vertical slide rails at the sewage outlet and the water outlet. The first sliding door and the second sliding door are respectively arranged in the vertical slide rails at the sewage outlet and the water outlet to slide in the opening and closing directions. The first sliding door and the second sliding door each include a closed end face adapted to the inner wall of the well body, and a connecting end face opposite thereto, and the connecting end face is provided with a second hinge seat. The main connecting rod includes an inlet end and an outlet end, and a first hinge hole is provided in the middle section of the main connecting rod. The first hinge hole is hingedly connected to the first hinge seat. The pair of secondary connecting rods are hingedly connected to the inlet end and the outlet end, respectively, and are hingedly connected to the first sliding door and the second hinge seat on the second sliding door, respectively. The outlet end is provided with a counterweight block.

2. A sponge city rainwater reuse and sewage interception system according to claim 1, characterized in that: The water inlet end is provided with a receiving tray.

3. A sponge city rainwater reuse and sewage interception system according to claim 2, characterized in that: The closed end faces of the first sliding door and the second sliding door are provided with sealing rings with a diameter larger than the sewage outlet and the drain outlet; when the first sliding door and the second sliding door are in the position of closing the sewage outlet and the drain outlet, the sewage outlet and the drain outlet are in the sealing ring.

4. A sponge city rainwater reuse and sewage interception system according to any one of claims 1 to 3, characterized in that: The rainwater purification device includes a PP module clean water tank, a submersible sewage pump, a lifting pump, a recycling pump, a rainwater lifting pipe, a sewage pipe, a rainwater recycling pipe, a tap water replenishment pipe, and a backwashing pipeline. The PP module clean water tank is isolated into a first purification room and a second purification room. The first purification room is separated into a submersible sewage workshop and a lifting workshop by a PP water storage module, and the second purification room is a recycling workshop. The submersible sewage workshop, the lifting workshop, and the recycling workshop are respectively provided with a submersible sewage pump, a lifting pump, and a recycling pump, and are all provided with an inspection port connected to the ground; The sewage pipe is connected to the submersible sewage pump, the rainwater lifting pipe is connected to the lifting pump and is led to the second purification chamber, the backwash pipeline is arranged at the bottom of the first purification chamber and is connected to the rainwater recycling pipe, and the tap water replenishment pipe is connected to the second purification chamber.

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