Rain and sewage shunting device for hydraulic engineering

Abstract

The application discloses a rain and sewage shunting device for water conservancy projects, which comprises a shunting box main body and a shunting assembly, and the shunting assembly is arranged on the shunting box main body. The rain and sewage shunting device for water conservancy projects has the advantages that high-precision intelligent shunting is realized through the "water level+specific gravity" double criteria: at the initial stage of rainfall, pollutants are intercepted by the rotating filter plate and automatically introduced into the collecting cylinder to complete solid-liquid separation; at the same time, because the initial rainwater contains many impurities, has large density and high weight, the processing cylinder presses the detection spring, the trigger rod moves downward to open the sewage pipe and close the rainwater pipe, and the polluted rainwater is accurately intercepted into the sewage system; with the continuous rainfall, the rainwater becomes clean and the weight is reduced, the detection spring rebounds to drive the trigger rod to move upward, and the rainwater pipe is switched to be conducted, so that the clean rainwater is directly discharged into the rainwater pipe network to realize resource utilization. The design combines water level monitoring and gravity feedback mechanism, does not need complex electric control, can reliably prevent rain and sewage from mixing, and has the advantages of efficient sewage interception, resource recovery and low maintenance.

Description

Technical Field

[0001] This application relates to the technical field of water conservancy engineering, and in particular to a rainwater and sewage separation device for water conservancy engineering. Background Technology

[0002] In urban drainage systems, rainwater and sewage separation is a key measure to control non-point source pollution, protect the water environment, and improve sewage treatment efficiency. However, traditional combined sewer systems or simple separation facilities generally suffer from the problem of "mixed rainwater and sewage"—especially in the early stages of rainfall, surface runoff carries a large amount of oil, silt, garbage, heavy metals, and organic pollutants (i.e., "initial rainwater"), which, if discharged directly into natural water bodies, will cause serious ecological damage. In contrast, if the relatively clean rainwater in the middle and later stages all enters the sewage pipe network, it will increase the load on sewage treatment plants and cause a waste of energy and resources.

[0003] Currently, most common rainwater and sewage separation devices rely on fixed-time control, single liquid level switches, or manual operation for switching. For example, some systems use time-delay valves to direct rainwater to the sewage pipe 5-15 minutes before rainfall begins, then switch back to the rainwater pipe. However, this method cannot adapt to different rainfall intensities, surface pollution levels, and regional characteristics, easily leading to misjudgments such as "failure to intercept when it should" or "interception when it should not." Other devices, although incorporating float valves or liquid level sensors, rely solely on water level height for judgment, failing to distinguish between clean rainwater at high water levels and highly polluted water at low water levels, resulting in limited separation accuracy. Summary of the Invention

[0004] Purpose of the invention: In view of the above problems, the purpose of this invention is to provide a rainwater and sewage separation device for water conservancy projects, which can accurately prevent mixed flow and has the advantages of efficient sewage interception, resource recycling and low maintenance.

[0005] Technical solution: A rainwater and sewage separation device for water conservancy projects, comprising a main body of a separation box and a separation component installed on the main body of the separation box;

[0006] The flow divider assembly includes a detection mechanism, a separation mechanism is installed on the detection mechanism, and a control mechanism is installed on the main body of the flow divider box and connected to the separation mechanism.

[0007] The separation mechanism includes a processing cylinder mounted on the detection mechanism, a support cylinder coaxially mounted inside the processing cylinder, multiple filter plates spaced apart on the outer circumferential surface of the support cylinder, and multiple feed troughs also opened on the outer circumferential surface of the support cylinder; a collecting cylinder is rotatably mounted inside the support cylinder with one end extending to the outside of the processing cylinder, a collecting trough is opened on the collecting cylinder, a driving component is provided on the processing cylinder, the driving component is connected to the support cylinder and extends to the outside of the detection mechanism.

[0008] Furthermore, the detection mechanism includes a lifting plate that is slidably connected to the main body of the diversion box. A detection spring is provided at the bottom of the lifting plate. One end of the detection spring is connected to the lifting plate, and the other end is equipped with an electric telescopic rod. The electric telescopic rod is installed on the main body of the diversion box. A water level detection groove is opened on one end face of the treatment cylinder. A float is slidably installed in the water level detection groove. The control component is installed on the float and is signal-connected to the electric telescopic rod.

[0009] Ideally, a filter screen is fixedly installed on one side of the water level detection tank.

[0010] Ideally, when the detection spring is in the extended state, the top of the lifting plate contacts the body of the diversion box.

[0011] Furthermore, the control mechanism includes a rainwater pipe and a sewage pipe. The rainwater pipe and sewage pipe are respectively installed on the main body of the diversion box and are respectively connected to the treatment cylinder through a connecting hose. A control valve is provided between the connecting hose and the treatment cylinder. Two control switches are fixedly installed on the main body of the diversion box and are respectively connected to the corresponding signals of the two control valves. A trigger rod is fixedly installed on the treatment cylinder, and the two control switches are located on the same side of the trigger rod.

[0012] Ideally, the two control switches should be arranged vertically.

[0013] Furthermore, the inner diameter of the support cylinder is the same as the outer diameter of the collection cylinder, and the support cylinder and the collection cylinder are rotatably connected in a sealed manner.

[0014] Ideally, a conveying worm gear is installed inside the collection cylinder, and a collection box is installed on the main body of the diversion box, with the collection box located below the exposed end of the collection cylinder.

[0015] Beneficial effects: Compared with the prior art, the advantages of this invention are: high-precision intelligent diversion is achieved through the dual criteria of "water level + specific gravity": at the beginning of rainfall, pollutants are intercepted by the rotating filter plate and automatically introduced into the collection cylinder to complete solid-liquid separation; at the same time, because the initial rainwater has many impurities, high density and high weight, the processing cylinder presses down the detection spring, the trigger rod moves down to open the sewage pipe and close the rainwater pipe, accurately intercepting the polluted rainwater into the sewage system; as rainfall continues, the rainwater becomes clearer and lighter, the detection spring rebounds and drives the trigger rod to move up, switching to rainwater pipe conduction, so that clean rainwater is directly discharged into the rainwater pipe network to achieve resource utilization. This design integrates water level monitoring and gravity feedback mechanism, and can reliably prevent rainwater and sewage mixing without complex electrical control, and has the advantages of efficient sewage interception, resource recovery and low maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a partial sectional view of the main body of the distribution box;

[0018] Figure 3 This is a schematic diagram of the internal structure of the main body of the distribution box;

[0019] Figure 4 This is a partial sectional view of the processing cylinder. Detailed Implementation

[0020] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0021] A rainwater and sewage separation device for water conservancy projects, such as Figures 1-4 As shown, the device includes a diversion box body 10 and a diversion assembly 20. The diversion assembly 20 is disposed on the diversion box body 10. The diversion assembly 20 includes a detection mechanism 201 disposed on the diversion box body 10. A separation mechanism 202 is disposed on the detection mechanism 201. A control mechanism 203 is disposed on the diversion box body 10. The separation mechanism 202 includes a processing cylinder 2021 disposed on the detection mechanism 201. A support cylinder 2022 is disposed inside the processing cylinder 2021. Multiple feed grooves 2023 are opened on the surface of the support cylinder 2022. A collection cylinder 2024 is rotatably disposed inside the support cylinder 2022. A collection groove 2025 is opened on the top of the collection cylinder 2024. A driving component 2026 is disposed on the processing cylinder 2021. Multiple filter plates 2027 are disposed on the processing cylinder 2021.

[0022] It should be noted that the water volume in the treatment cylinder 2021 should not exceed half of the cylinder's capacity to avoid excessive water level, which could cause water to enter the collection tank 2025. Meanwhile, the drive unit 2026 drives the support cylinder 2022 through gears or belts, and only needs to achieve the desired driving effect.

[0023] In one embodiment of this application, such as Figure 4 As shown, the inner diameter of the support cylinder 2022 is the same as the outer diameter of the collection cylinder 2024, and the support cylinder 2022 and the collection cylinder 2024 are connected in a sealed rotatable connection.

[0024] In one embodiment of this application, such as Figure 2 As shown, a conveying worm gear is provided inside the collection cylinder 2024, and a collection box is provided on the main body 10 of the diversion box, with the collection box located below one end of the collection cylinder 2024.

[0025] It should be noted that the conveying worm gear is existing technology, which can convey foreign objects in the collection cylinder 2024 and then drop them into the collection box for unified processing.

[0026] In one embodiment of this application, such as Figure 2 and Figure 4As shown, the detection mechanism 201 includes a lifting plate 2011 slidably disposed on the main body 10 of the diversion box; a detection spring 2012 is fixedly installed at the bottom of the lifting plate 2011; an electric telescopic rod 2013 is fixedly installed at the bottom of the detection spring 2012; a water level detection groove 2014 is opened in the processing cylinder 2021; a float 2015 is slidably disposed in the water level detection groove 2014; and a control component 2016 is disposed on the float 2015.

[0027] It should be noted that the extension of the electric telescopic rod 2013 is controlled by the control component 2016, so that at different water levels, the float 2015 can drive the control component 2016 to move to different heights, and the control component 2016 can also control the electric telescopic rod 2013 to extend to different heights. In this way, the length of the detection spring 2012 can be controlled at different water volumes to adapt to different usage conditions.

[0028] In one embodiment of this application, such as Figure 4 As shown, a filter screen is fixedly installed on one side of the water level detection tank 2014.

[0029] It should be noted that the filter screen is used to block impurities in the treatment cylinder 2021, preventing impurities from entering the water level detection tank 2014 and affecting the rise and fall of the float 2015, which would lead to inaccurate water level detection. The control component 2016 uses existing technology to judge the water level in the treatment cylinder 2021 based on the water level height, and thus the water volume in the treatment cylinder 2021 can be determined.

[0030] In one embodiment of this application, such as Figure 2 As shown, when the detection spring 2012 is in the extended state, the top of the lifting plate 2011 contacts the diversion box body 10.

[0031] In one embodiment of this application, such as Figure 3 As shown, the control mechanism 203 includes a rainwater pipe 2031 installed on the main body 10 of the diversion box; a sewage pipe 2032 is fixedly installed on the main body 10 of the diversion box; and a connecting hose 2033 is fixedly installed at one end of both the rainwater pipe 2031 and the sewage pipe 2032.

[0032] It should be noted that the connecting hose 2033 is made of a flexible material, so that the processing cylinder 2021 can move without being restricted by the connecting hose 2033.

[0033] A control valve 2034 is fixedly installed at one end of each of the two connecting hoses 2033; two control switches 2035 are fixedly installed on the main body 10 of the diversion box; and a trigger rod 2036 is fixedly installed on the processing cylinder 2021.

[0034] It should be noted that the two control switches 2035 control the two control valves 2034 respectively. When the trigger rod 2036 contacts one of the control switches 2035, this control switch 2035 controls the control valve 2034 to be in the open state, and the other control switch 2035 controls the control valve 2034 to be in the closed state.

[0035] In one embodiment of this application, such as Figure 3 As shown, the two control switches 2035 are arranged longitudinally, and the two control switches 2035 are located on one side of the trigger rod 2036.

[0036] Specifically, in the early stages of rainfall, surface runoff carries a large amount of pollutants such as oil, mud, and garbage into the main body 10 of the diversion box. At this time, the drive component 2026 drives the filter plate 2027 to rotate, causing the filter plate 2027 to rotate the pollutants. When the pollutants rotate to the top of the treatment cylinder 2021, the feed trough 2023 and the collection trough 2025 overlap, allowing the filtered garbage to enter the collection cylinder 2024 through the feed trough 2023 and the collection trough 2025, completing the initial cleaning of large particles of foreign matter.

[0037] After rainwater flows into the treatment cylinder 2021, it is initially filtered by a filter to remove large particles before entering the water level detection tank 2014. As the water level rises, the float 2015 rises synchronously with the liquid level. The control component 2016 on the float 2015 triggers a signal, activating the electric telescopic rod 2013. This causes the electric telescopic rod 2013 to extend or retract according to the water level, thereby controlling the length of the detection spring 2012 and adjusting its elasticity. During this process, the trigger rod 2036 first contacts the first control switch 2035, which controls the rainwater flow. When the control valve 2034 corresponding to pipe 2031 is opened, the valve of sewage pipe 2032 is closed. At this time, rainwater is guided to rainwater pipe 2031 and discharged into the municipal sewage network for centralized treatment via connecting hose 2033. If the weight of the water is greater than the same volume, it will increase the mass of treatment cylinder 2021, causing treatment cylinder 2021 to press down detection spring 2012, which in turn causes trigger rod 2036 to move down and release from second trigger switch 2035. At this time, the control valve 2034 corresponding to sewage pipe 2032 is opened, and the control valve 2034 corresponding to rainwater pipe 2031 is closed.

[0038] As rainfall continues and surface scouring nears completion, the cleanliness of subsequent rainwater significantly improves. At this point, the water in the water level detection tank 2014 becomes clearer and the water quality decreases. The detection spring 2012 drives the lifting plate 2011 and the trigger rod 2036 to move upward and touch the first control switch 2035. This switch controls the control valve 2034 of the rainwater pipe 2031 to open, while simultaneously closing the sewage pipe 2032. At this time, the clean rainwater no longer enters the treatment cylinder 2021 for complex treatment, but instead flows directly through the main channel of the diversion box body 10 and is discharged into the rainwater network or natural water bodies via the rainwater pipe 2031, achieving resource utilization.

[0039] Highly efficient interception of initial rainwater: In the initial stage of rainfall, surface pollutants are intercepted by the rotating filter plate 2027 and transported to the position where the feed trough 2023 and the collection trough 2025 are aligned. Large particles of waste automatically fall into the collection cylinder 2024 and are discharged into the collection box through the internal conveying worm gear, completing the initial separation of solid and liquid. At the same time, because the initial rainwater contains many impurities, has a high density and weight, the overall mass of the treatment cylinder 2021 increases, which presses down the detection spring 2012, causing the trigger rod 2036 to move down and touch the control switch below, opening the sewage pipe 2032 and closing the rainwater pipe 2031, guiding the polluted rainwater to the sewage system and preventing it from entering natural water bodies.

[0040] Post-rainwater resource utilization: As rainfall continues, the cleanliness of rainwater increases and its density and weight decrease. The detection spring 2012 rebounds, causing the treatment cylinder 2021 and trigger rod 2036 to move upward, touching the control switch above, switching the rainwater pipe 2031 to be open and the sewage pipe 2032 to be closed, so that clean rainwater can be directly discharged into the rainwater pipe network or natural water bodies, realizing water resource recycling.

[0041] In summary, the rainwater and sewage separation device for water conservancy projects in this application achieves high-precision intelligent separation through a dual criterion of "water level + specific gravity": In the early stage of rainfall, pollutants are intercepted by the rotating filter plate and automatically guided into the collection cylinder to complete solid-liquid separation; at the same time, because the initial rainwater has many impurities, high density, and high weight, the processing cylinder presses down the detection spring, and the trigger rod moves down to open the sewage pipe and close the rainwater pipe, accurately intercepting the polluted rainwater into the sewage system; as the rainfall continues, the rainwater becomes clearer and lighter, the detection spring rebounds and drives the trigger rod to move up, switching to rainwater pipe conduction, allowing clean rainwater to be directly discharged into the rainwater pipe network for resource utilization. This design integrates water level monitoring and gravity feedback mechanisms, and can reliably prevent rainwater and sewage mixing without complex electrical control, while having the advantages of high-efficiency sewage interception, resource recovery, and low maintenance.

Claims

1. A rainwater and sewage separation device for water conservancy projects, characterized in that: Includes a main body (10) of the splitter box and a splitter assembly (20) installed on the main body (10); The diversion assembly (20) includes a detection mechanism (201), a separation mechanism (202) is installed on the detection mechanism (201), and a control mechanism (203) is installed on the diversion box body (10) and connected to the separation mechanism (202); The separation mechanism (202) includes a processing cylinder (2021) installed on the detection mechanism (201), a support cylinder (2022) coaxially installed inside the processing cylinder (2021), a plurality of filter plates (2027) spaced apart on the outer circumferential surface of the support cylinder (2022), and a plurality of feed grooves (2023) also opened on the outer circumferential surface of the support cylinder (2022); a collection cylinder (2024) is rotatably installed inside the support cylinder (2022) and one end of it extends to the outside of the processing cylinder (2021), a collection groove (2025) is opened on the collection cylinder (2024), a driving component (2026) is provided on the processing cylinder (2021), and the driving component (2026) is connected to the support cylinder (2022) and extends to the outside of the detection mechanism (201).

2. The rainwater and sewage separation device for water conservancy projects according to claim 1, characterized in that: The detection mechanism (201) includes a lifting plate (2011) that is slidably connected to the main body (10) of the diversion box. A detection spring (2012) is provided at the bottom of the lifting plate (2011). One end of the detection spring (2012) is connected to the lifting plate (2011), and the other end is equipped with an electric telescopic rod (2013). The electric telescopic rod (2013) is installed on the main body (10) of the diversion box. A water level detection groove (2014) is opened on one end face of the processing cylinder (2021). A float (2015) is slidably installed in the water level detection groove (2014). A control component (2016) is installed on the float (2015) and is signal connected to the electric telescopic rod (2013).

3. A rainwater and sewage separation device for water conservancy projects according to claim 2, characterized in that: A filter screen is fixedly installed on one side of the water level detection tank (2014).

4. A rainwater and sewage separation device for water conservancy projects according to claim 2, characterized in that: When the detection spring (2012) is in the extended state, the top of the lifting plate (2011) contacts the main body (10) of the diversion box.

5. A rainwater and sewage separation device for water conservancy projects according to claim 1, characterized in that: The control mechanism (203) includes a rainwater pipe (2031) and a sewage pipe (2032). The rainwater pipe (2031) and the sewage pipe (2032) are respectively installed on the main body (10) of the diversion box and are respectively connected to the treatment cylinder (2021) through a connecting hose (2033). A control valve (2034) is provided between the connecting hose (2033) and the treatment cylinder (2021). Two control switches (2035) are fixedly installed on the main body (10) of the diversion box and are respectively connected to the corresponding signals of the two control valves (2034). A trigger rod (2036) is fixedly installed on the treatment cylinder (2021) and the two control switches (2035) are located on the same side of the trigger rod (2036).

6. A rainwater and sewage separation device for water conservancy projects according to claim 5, characterized in that: The two control switches (2035) are arranged longitudinally.

7. A rainwater and sewage separation device for water conservancy projects according to claim 1, characterized in that: The inner diameter of the support cylinder (2022) is the same as the outer diameter of the collection cylinder (2024), and the support cylinder (2022) and the collection cylinder (2024) are connected in a sealed rotatable connection.

8. A rainwater and sewage separation device for water conservancy projects according to claim 1 or 7, characterized in that: A conveying worm gear is installed inside the collection cylinder (2024), and a collection box is installed on the main body (10) of the diversion box. The collection box is located below the exposed end of the collection cylinder (2024).

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