Rainwater collection and diversion system

Abstract

The utility model relates to a rainwater collection and diversion system which comprises a diversion well, a rainwater discarding unit, a primary rainwater treatment unit, a water storage pond, a secondary rainwater treatment unit, an electromagnetic valve and a control host. The diversion well is used for communicating with an urban rainwater collecting pipe network and dividing rainwater to the rainwater discarding unit and the primary rainwater treatment unit; the primary rainwater treatment unit is used for carrying out primary treatment on the divided rainwater; the water storage tank is used for storing the rainwater treated by the primary rainwater treatment unit; the secondary rainwater treatment unit is used for carrying out secondary treatment on water in the water storage tank; the control host is used for controlling connection or disconnection between the water storage pond and the secondary rainwater treatment unit through the electromagnetic valve and controlling drainage of rainwater treated by the secondary rainwater treatment unit at the same time. The urban rainwater collection and utilization efficiency is improved by treating rainwater for multiple times, and automatic control is achieved through control of the control host.

Description

Technical Field

[0001] The utility model relates to the field of rainwater collection and treatment, in particular to a rainwater collection and diversion system. Background Art

[0002] With the rapid development of urbanization, the impermeable areas of roads and buildings have expanded. On the one hand, rainwater cannot leak underground to replenish groundwater. In addition, the serious overload of groundwater has deteriorated the water environment and ecological environment around the city. On the other hand, low-level water flows have quickly gathered, causing ground technology and local urban floods, urban food shortages, water environment deterioration, urban ecological environment damage, urban rainstorms, floods and other problems that are becoming increasingly serious. At present, for the treatment of urban rainwater, since the cleanliness of urban rainwater itself is relatively low, it is not convenient to collect and use it directly. Urban rainwater is basically directly introduced into the ground, and then flows into rivers and lakes through underground pipes. This method cannot utilize rainwater and will cause a waste of resources. Utility Model Content

[0003] In view of the existing deficiencies, the utility model provides a rainwater collection and diversion system.

[0004] The utility model adopts the following technical solution to solve the technical problem: a rainwater collection and diversion system, comprising a diversion well, a rainwater discarding unit, a primary rainwater treatment unit, a water storage tank, a secondary rainwater treatment unit, a solenoid valve and a control host; the diversion well is used to be connected with the urban rainwater collection network and divert rainwater to the rainwater discarding unit and the primary rainwater treatment unit; the primary rainwater treatment unit is used to perform primary treatment on the diverted rainwater; the water storage tank is used to store rainwater treated by the primary rainwater treatment unit; the secondary rainwater treatment unit is used to perform secondary treatment on the water in the water storage tank; the control host is used to control the conduction or closing between the water storage tank and the secondary rainwater treatment unit through the solenoid valve, and simultaneously control the discharge of rainwater treated by the secondary water treatment unit.

[0005] Preferably, the primary rainwater treatment unit comprises a primary filtration unit connected to the diversion well and a secondary filtration unit connected to the water outlet of the primary filtration unit.

[0006] Preferably, the primary filtration unit comprises a first filter well for primary filtration, a first filter screen and a filter basket, the first filter well being provided with a first water inlet connected to the diversion well and a first water outlet connected to the secondary filtration unit, the first filter screen being arranged in the first filter well at a position corresponding to below the first water inlet, and the filter basket being detachably and suspendedly installed in the first filter well and being located below the first filter screen.

[0007] Preferably, the secondary filtration unit includes a second filter well for secondary filtration, a first pipe for changing the direction of water flow into a vertical flow, an umbrella-shaped rainwater diversion mechanism arranged in the second filter well and below the first pipe, and a second filter net arranged in the second filter well and surrounding the umbrella-shaped rainwater separation mechanism; the second filter well is provided with a second water inlet connected to the first water outlet, and a second water outlet connected to the water storage tank, and the first pipe is sealed and installed in the second water inlet.

[0008] Preferably, an ultrasonic water level monitor is installed in the water storage tank, and the ultrasonic water level monitor is electrically connected to the control host.

[0009] Preferably, the secondary rainwater treatment unit comprises a filter and a dosing device, the filter is connected to the water storage tank, and the dosing device is connected to the filter.

[0010] Preferably, a backwash pipe is provided in the water storage tank, the backwash pipe is connected to the secondary rainwater treatment unit, and a sewage pipe is also provided on the water storage tank.

[0011] Preferably, the secondary rainwater treatment unit is provided with a pressure relief return water pipe and a sewage pipe for connecting to a municipal sewage pipe.

[0012] Preferably, the control host is also electrically connected to a soil temperature and humidity sensor and / or a leaf temperature and humidity sensor.

[0013] Preferably, the control host is a control host provided with a touch screen, and the control host is also provided with a communication module connected to a remote intelligent terminal for communication.

[0014] The beneficial effect of the utility model is that the utility model can realize automatic control of the entire system by controlling the electromagnetic valve by the control host, and remove the mud, leaves and larger pieces of garbage in the urban rainwater through the primary treatment before water storage, and then further purify the water quality of the urban rainwater through secondary treatment during use, thereby expanding the scope of use of urban rainwater and further improving the collection and utilization efficiency of urban rainwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a system schematic diagram of an embodiment of the utility model;

[0016] Names and serial numbers of parts in the figure: 1-diversion well 2-rainwater discard unit 3-primary rainwater treatment unit 30-primary filtration unit 300-first filtration well 301-first filter net 302-filter basket 31-secondary filtration unit 310-second filtration well 311-first pipe 312-umbrella-shaped rainwater diversion mechanism 313-second filter net 4-water storage tank 40-ultrasonic water level monitor 41-backwash pipe 42-sewage pipe 5-secondary rainwater treatment unit 50-sewage pipe 6-solenoid valve 7-control host 8-soil temperature and humidity sensor. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the embodiments, and a clear and complete description will be given. It should be understood that these embodiments are used to illustrate the present invention and are not limited to the scope of the present invention. The implementation conditions adopted in the embodiments can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in the conventional experiments. In addition, the directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only referenced to the directions of the attached diagrams. The directional terms used are for better and clearer explanation and understanding of the present invention, rather than indicating or implying the orientation that the present invention must have, and therefore cannot be understood as limitations on the present invention.

[0018] The utility model is implemented as follows Figure 1As shown in, a rainwater collection and diversion system includes a diversion well 1, a rainwater discarding unit 2, a primary rainwater treatment unit 3, a water storage tank 4, a secondary rainwater treatment unit 5, an electromagnetic valve 6 and a control host 7; the diversion well 1 is used to be connected to the urban rainwater collection network and divert rainwater to the rainwater discarding unit 2 and the primary rainwater treatment unit 3. The diversion well 1 is connected to the urban rainwater collection pipeline, which has a barrel-shaped structure and is made of bricks in a pit dug underground. A manhole cover is then provided on the top. Rainwater flows into the diversion well 1 through the urban rainwater collection pipeline. When the diversion well 1 encounters heavy rainfall, part of the rainwater passes through the rainwater discarding unit provided on the diversion well 1. The overflow pipe of unit 2 is used to discharge excess rainwater into the municipal rainwater discharge pipe for discharge, and the other part of rainwater flows to the primary rainwater treatment unit 3, which ensures that the amount of rainwater flowing into the primary rainwater treatment unit 3 is within a certain range and will not cause damage to the subsequent units of the system when encountering heavy rain. When it rains lightly, it is difficult for rainwater in the diversion well 1 to be higher than the position of the overflow pipe, and it will not flow out from the rainwater abandonment unit 2, thereby maximizing the collection and utilization of rainwater; the primary rainwater treatment unit 3 is used to perform primary treatment on the diverted rainwater. Since the concentration of pollutants in the initial rainwater is relatively high and the water quality is turbid, the relatively high pollutants carried when it just rains are discharged through the primary rainwater treatment unit 3. Large garbage and leaves, even mud and sand, etc. are removed to improve the quality of rainwater; the water tank 4 is used to store rainwater treated by the primary rainwater treatment unit 3, and the water tank 4 stores the rainwater treated by the primary treatment for use when needed; the secondary rainwater treatment unit 5 is used to perform secondary treatment on the water in the water tank 4. When the stored rainwater is needed, the solenoid valve between the water tank 4 and the secondary rainwater treatment unit 5 is opened to treat the rainwater again. The quality of the treated rainwater is further improved, and its scope of use can be expanded; the control host 7 is used to control the conduction or closing between the water tank 4 and the secondary rainwater treatment unit 5 through the solenoid valve 6, and At the same time, the discharge of rainwater treated by the secondary rainwater treatment unit 5 is controlled, that is, a pipe connecting the water storage tank 4 and the secondary rainwater treatment unit 5 is provided between the water storage tank 4 and the secondary rainwater treatment unit 5, and a solenoid valve 6 is provided on the pipe. The water storage tank 4 is a water tank made of PP material, which is buried underground. At this time, a rainwater well can be provided at the water storage tank 4, and the solenoid valve 6 and the pipe for controlling the conduction or closing of the water storage tank 4 and the secondary rainwater treatment unit 5 are installed in the rainwater well. In order to facilitate the rainwater in the water storage tank 4 to flow into the secondary rainwater treatment unit 5, a water pump can be provided on the pipe connecting them, and the water pump is also provided in the rainwater well, and a well cover is also provided on the top of the rainwater well;A pipe for drainage is provided on the secondary rainwater treatment unit 5, and a solenoid valve 6 is also provided on the pipe. These solenoid valves 6 are electrically connected to the control host 7. By controlling their opening or closing through the control host 7, the solenoid valves 6 on these pipes can be centrally installed in a valve well, which is convenient for the inspection and maintenance of the valve. The valve well is also made of bricks in a pit dug underground, and then a manhole cover is set at the top. Then the pipe for drainage passes through the valve well, one end is connected to the secondary rainwater treatment unit 5 and the other end leads to the place where water is needed. The control host 7 is provided with a PLC control board and a control element, which is connected to the PLC control board. The control host 7 is provided with a touch display screen, which is convenient for people to use through touch control. At the same time, the control host 7 is also provided with a communication module connected to a remote intelligent terminal. The communication module selects any one or more communication modes such as cellular mobile communication, WiFi or Bluetooth, and is connected to the intelligent terminal through the communication module. After that, remote control can be performed on the intelligent terminal, thereby remotely monitoring the operation of the system and rainwater collection and diversion. At this time, the control host 7 is also electrically connected to the soil temperature and humidity sensor 8 and / or the leaf temperature and humidity sensor. The soil temperature and humidity sensor 8 is a sensor that can detect soil temperature and humidity, and the leaf temperature and humidity sensor is a sensor used to detect leaf temperature and humidity. The soil temperature and humidity sensor 8 is used to monitor the temperature and humidity of the soil that needs water, and the leaf temperature and humidity sensor is used to monitor the temperature and humidity of the leaves on the trees that need water, so that they can be better watered accurately. In this way, the control host 7 controls the electromagnetic valve 6 to achieve automatic control of the entire system. When water is needed, the electromagnetic valve 6 is opened so that the rainwater in the water tank 4 is processed by the secondary rainwater treatment unit 5 and flows out for use. When it is not needed, the electromagnetic valve 6 is closed, and the rainwater is stored in the water tank 4 for standby use. The primary rainwater treatment unit 3 removes the mud, leaves and larger pieces of garbage in the urban rainwater. The secondary rainwater treatment unit 5 further purifies the water quality of the urban rainwater, thereby expanding the scope of use of urban rainwater, and further improving the collection and utilization efficiency of urban rainwater. ;

[0019] Further improvements, such as Figure 1As shown in the figure, the primary rainwater treatment unit 3 includes a primary filter unit 30 connected to the diversion well 1 and a secondary filter unit 31 connected to the water outlet of the primary filter unit 30. The primary filter unit 3 is used to filter out larger pieces of garbage such as branches and leaves in the rainwater, effectively protecting the normal operation of subsequent devices. The secondary filter unit 31 can further filter out smaller debris such as mud and sand in the rainwater, thereby maximizing the removal of garbage and debris in the rainwater. For the primary filtering unit 30, the primary filtering unit 30 includes a first filtering well 300 for primary filtering, a first filter screen 301 and a filter basket 302. The first filtering well 300 is provided with a first water inlet connected to the diversion well 1 and a first water outlet connected to the secondary filtering unit 31. The first filter screen 301 is arranged in the first filtering well 300 at a position corresponding to the lower part of the first water inlet. The filter basket 302 can be detachably suspended and installed in the first filtering well 300 and is located at a position below the first filter screen 301. The first filtering well 300 is also made of bricks in a pit dug underground like the diversion well 1, and then a manhole cover is arranged at the top. The first water inlet pipe installed at the first water inlet is connected with the diversion well 1, and the rainwater flows from the diversion well 1 through the first water inlet pipe into the first filter well 300. The rainwater flowing into the first filter well 300 is first filtered by the first filter net 301 to filter out larger branches and leaves, and then passes through the filter basket 302 below the first filter net 301 to filter out stones and other debris that are not filtered out by the first filter net 301, and then flows out through the first water outlet. The first primary water outlet is also below the first filter net 301, and the filter basket 302 can be taken out from the first filter well 300 from time to time to remove the filtered garbage. The first filter screen 301 is composed of a stainless steel filter screen installed in the first filter well 300 in a transverse matching manner, which means that the size of the first filter screen 301 is equivalent to the inner diameter of the first filter well 300. The filter basket 302 is suspended in the first filter well 300. The filter basket 302 is a stainless steel basket with a hook set on it, and then the hook is hung on the crossbar set in the first filter well 300 in a transverse manner. The edge of the opening end of the filter basket is set close to the wall of the first filter well 300, and the first water outlet is located between the opening end of the filter basket 302 and the first filter well. 300 is below the connection position of the well wall, which ensures that the rainwater filtered by the first filter net 301 will flow to the first water outlet after being filtered by the filter basket 302, and the cross bar used to hang the filter basket 302 is set below the first filter net 301, the filter basket 302 is connected with a chain, the chain is connected with a hook, and the hook is hung on the cross bar; at this time, the vertical height of the opening end of the filter basket 302 is higher than the height of the top of the first water outlet, which ensures that the rainwater in the first filter well will flow to the first water outlet after being filtered by the filter basket.

[0020] For the secondary filtration unit 31, the secondary filtration unit 31 includes a second filtration well 310 for secondary filtration, a first pipe 311 for changing the direction of water flow into a vertical flow, an umbrella-shaped rainwater diversion mechanism 312 arranged in the second filtration well 310 and below the first pipe 311, and a second filter net 313 arranged in the second filtration well 310 and surrounded by the umbrella-shaped rainwater separation mechanism 312; the second filtration well 310 is provided with a second water inlet connected to the first water outlet, a second water inlet connected to the water storage tank 4, and a second water inlet connected to the first water outlet. The second water outlet is a first water pipe 311 which is sealed and installed in the second water inlet. The second filter well 310 adopts the same structure as the first filter well 300, that is, it is made of bricks in a pit dug underground, and then a well cover is set on the top. A second water inlet pipe for allowing rainwater to flow into the second filter well 310 is also set between the water outlets of the second filter well 310 and the first filter well 300. The two ends of the second water inlet pipe are correspondingly installed in the first water outlet and the second water inlet. At the same time, the first pipe 311 and the second water inlet pipe are connected. The pipe 311 is an elbow pipe, and its outlet is vertically downward. The top of the umbrella-shaped rainwater diversion mechanism 312 is located directly below the outlet of the second pipe 311, so that the flow direction of rainwater is changed to a vertical downward flow direction. After the rainwater flows to the umbrella-shaped rainwater diversion mechanism, it flows along the umbrella-shaped edge. The second filter 313 is a cylindrical structure, and its upper end is connected to the outlet of the second pipe 311. The umbrella-shaped rainwater diversion mechanism 312 is surrounded by the second filter 313, and there is a gap between the two. In this way, rainwater passes through the umbrella-shaped rainwater diversion mechanism. After the water diversion mechanism 312, it encounters the second filter screen 313, and the impurities are in the second filter screen 313. The outside of the second filter screen 313 constitutes a clean water area, and the rainwater that has been filtered again flows into the water storage tank 4 through the second water outlet. The second water outlet can be set below the umbrella-shaped rainwater diversion mechanism 312 to further process and purify the rainwater. At the same time, a sewage pipe is also set on the second filter well 310, and the water inlet of the sewage pipe is set in the second filter screen 313, so that the filtered garbage can be discharged through the sewage pipe.

[0021] Further improvements, such as Figure 1 As shown in the figure, an ultrasonic water level monitor 40 is installed in the water tank 4, and the ultrasonic water level monitor 40 is electrically connected to the control host 7. The ultrasonic water level monitor 40 can be used to monitor the water level in the water tank 4 in real time. When the water level is too high, the control host 7 opens the solenoid valve 6 between it and the secondary rainwater treatment unit 5 or the solenoid valve 6 on its sewage pipe 42 to discharge the water in the water tank 4, so as to keep the water in the water tank 4 below a safe water level.

[0022] Further improvements, such as Figure 1As shown in the figure, the secondary rainwater treatment unit 5 includes a filter and a dosing device. The filter is connected to the water storage tank 4, and the dosing device is connected to the filter. The filter can be a quartz sand filter to further remove finer impurities in the water. The dosing device can be a drug device used to add water purification drugs to the water, such as an automatic chlorinator for adding sodium hypochlorite, which further improves the water quality of rainwater and expands its use. At this time, the filter and the dosing device can be made into an integrated machine, and then an installation well is built underground with bricks, and the integrated machine is installed in the installation well. A manhole cover can be set on the top of the installation well. The integrated machine can be set as a shell, and a filter and a dosing device connected by a pipe are set in the shell, and then a third water inlet pipe connected to the water storage tank 4 and a water outlet pipe for drainage are set on the shell.

[0023] Further improvements, such as Figure 1 As shown in , a backwash pipe 41 is provided in the water tank 4, and the backwash pipe 41 is connected to the secondary rainwater treatment unit 5 and is connected to the outlet pipe of the secondary rainwater treatment unit. A sewage pipe 42 is also provided on the water tank 4, and the rainwater treated by the secondary rainwater treatment unit 5 can be passed into the water tank 4 by the backwash pipe 41 to clean the water tank 4. Similarly, a solenoid valve 6 electrically connected to the control host 7 is also provided between the backwash pipe 41 and the secondary rainwater treatment unit 5. In addition, a pressure relief return pipe and a sewage pipe 50 for connecting to a municipal sewage pipe are provided on the secondary rainwater treatment unit 5, so as to ensure the smooth flow of rainwater in the secondary rainwater treatment unit 5 and discharge the sewage generated after treatment.

[0024] Although the utility model has been described in detail above with general descriptions and specific implementation schemes, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A rainwater collection and diversion system, characterized in that: It includes a diversion well, a rainwater discarding unit, a primary rainwater treatment unit, a water storage tank, a secondary rainwater treatment unit, a solenoid valve and a control host; the diversion well is used to be connected to the urban rainwater collection network and divert rainwater to the rainwater discarding unit and the primary rainwater treatment unit; the primary rainwater treatment unit is used to perform primary treatment on the diverted rainwater; the water storage tank is used to store rainwater treated by the primary rainwater treatment unit; The secondary rainwater treatment unit is used to perform secondary treatment on the water in the water storage tank; the control host is used to control the conduction or closing between the water storage tank and the secondary rainwater treatment unit through the solenoid valve, and simultaneously control the discharge of rainwater treated by the secondary water treatment unit.

2. The rainwater collection and diversion system according to claim 1 is characterized in that The primary rainwater treatment unit includes a primary filtering unit connected to the diversion well and a secondary filtering unit connected to the water outlet of the primary filtering unit.

3. The rainwater collection and diversion system according to claim 2 is characterized in that :The primary filtration unit includes a first filter well, a first filter screen and a filter basket for primary filtration. The first filter well is provided with a first water inlet connected to the diversion well and a first water outlet connected to the secondary filtration unit. The first filter screen is arranged in the first filter well at a position corresponding to below the first water inlet. The filter basket can be detachably and suspendedly installed in the first filter well and is located below the first filter screen.

4. The rainwater collection and diversion system according to claim 2 is characterized in that :The secondary filtration unit includes a second filter well for secondary filtration, a first pipe for changing the direction of water flow into vertical flow, an umbrella-shaped rainwater diversion mechanism arranged in the second filter well and below the first pipe, and a second filter net arranged in the second filter well and surrounded by the umbrella-shaped rainwater separation mechanism; the second filter well is provided with a second water inlet connected to the first water outlet and a second water outlet connected to the water storage tank, and the first pipe is sealed and installed in the second water inlet.

5. The rainwater collection and diversion system according to claim 1 is characterized in that : A water level monitor is installed in the water storage tank, and the water level monitor is electrically connected to the control host.

6. The rainwater collection and diversion system according to claim 1, characterized in that :The secondary rainwater treatment unit includes a filter and a dosing device. The filter is connected to the water storage tank, and the dosing device is connected to the filter.

7. The rainwater collection and diversion system according to claim 1 is characterized in that : A backwash pipe is arranged in the water storage tank, and the backwash pipe is connected to the secondary rainwater treatment unit. A sewage pipe is also arranged on the water storage tank.

8. The rainwater collection and diversion system according to claim 1, characterized in that The secondary rainwater treatment unit is provided with a pressure relief return water pipe and a sewage pipe for connecting to the municipal sewage pipe.

9. The rainwater collection and diversion system according to claim 1, characterized in that :The control host is also electrically connected to a soil temperature and humidity sensor and / or a leaf temperature and humidity sensor.

10. The rainwater collection and diversion system according to claim 1, characterized in that The control host is a control host provided with a touch screen, and the control host is also provided with a communication module connected to a remote intelligent terminal.

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