Rain and sewage diversion device

Abstract

The utility model relates to rain and pollution shunt technical field, and disclose a rain and pollution shunt device, include: shunt box, hierarchical treatment structure sets up in the cavity of shunt box for rainwater multistage treatment, hierarchical treatment structure includes first baffle, second baffle, third baffle and filter screen, first baffle is fixedly installed with shunt box, second baffle and third baffle all set up in first baffle one side, second baffle and third baffle all are fixedly installed with shunt box inner wall, filter screen is obliquely set up between second baffle and third baffle, and filter screen both ends are fixedly installed with second baffle and third baffle, and the scheme realizes the two -stage physical separation process of transition inertia desilting + filtration, has realized the efficient grading removal of different particle size impurities in sewage, and the unique transition structure realizes separation with the gravity and inertia of silt itself, greatly reduces the risk of the blockage caused by the traditional pure dependence filter screen.

Description

Technical Field

[0001] This utility model relates to the field of rainwater and sewage separation technology, and in particular to a rainwater and sewage separation device. Background Technology

[0002] A rainwater and sewage separation device is a device used to separate rainwater and sewage.

[0003] A search revealed a prior art rainwater and sewage separation device (publication number: CN221372416U), comprising a separation box, an inlet pipe, a baffle plate, a pull-out filter screen, a sedimentation tank, an overflow outlet, and an outlet pipe. The inlet pipe has fixed blocks on its top and bottom inner walls, and sliding cavities are formed on the outer walls of opposite sides of the two fixed blocks. A piston is slidably connected to the inner wall of each sliding cavity, and the piston is connected to the sliding cavity via a vibration spring. A connecting rod is provided on the outer wall of the piston, and an impurity separation screen is provided on the outer wall of the connecting rod. An impurity fall-off port is formed on the bottom inner wall of the inlet pipe, and a suspended solids collection box is provided at the bottom of the inlet pipe, connected to the impurity fall-off port. Several equally spaced baffle plates are provided at the edge of the bottom opening of the impurity fall-off port, and the cross-section of the baffle plates is a folded structure.

[0004] Existing technologies mainly separate impurities through filtration using filters. However, relying on filters results in a limited impurity removal effect, which easily leads to filter clogging and requires frequent maintenance. Furthermore, rainwater mixed with silt may enter the collection box designed in existing technologies, making it difficult to achieve multi-stage treatment and separation.

[0005] Therefore, we propose a rainwater and sewage separation device. Utility Model Content

[0006] The present invention mainly addresses the technical problem of easy clogging and limited impurity removal effect of the above-mentioned filter screen, and provides a rainwater and sewage separation device.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a rainwater and sewage separation device, comprising: The diversion box forms a hollow box. A water inlet pipe for supplying water is fixedly installed at one end of the diversion box, a drain pipe for draining water is fixedly installed at the other end of the diversion box, and a sand discharge pipe for discharging sewage is fixedly installed at the bottom of the diversion box. A graded treatment structure is installed inside the cavity of the diversion box for multi-stage treatment of rainwater. The graded treatment structure includes a first partition, a second partition, a third partition, and a filter screen. The first partition is fixedly installed to the diversion box. The second and third partitions are both located on one side of the first partition and are fixedly installed to the inner wall of the diversion box. The filter screen is inclinedly installed between the second and third partitions, and both ends of the filter screen are fixedly installed to the second and third partitions, respectively. A guiding structure is installed at the top of the first partition to guide the sewage delivered by the inlet pipe and create a jump phenomenon.

[0008] In a preferred embodiment of this utility model, the diversion box is a rectangular box with an open top, and the top of the diversion box is provided with a detachable sealing cover, which is locked and sealed to the diversion box by bolts.

[0009] In a preferred embodiment of this utility model, the first partition is a rectangular plate with the same width as the diversion box chamber. The first partition is fully welded to the inner wall of the diversion box. The upper part of the first partition is a processing chamber, and the lower part of the first partition is a collection chamber. The water inlet pipe port is located in the processing chamber, and the first partition port is located in the collection chamber.

[0010] In a preferred embodiment of this utility model, the guide structure includes water-blocking rods and settling troughs. Several water-blocking rods are fixedly installed on the top of the first partition, and several settling troughs are also opened on the top surface of the first partition. When water flows through the water-blocking rods, it will form a jump, causing the sediment to settle from the settling troughs to below the first partition.

[0011] In a preferred embodiment of this utility model, the length of the water-blocking rod is equal to the width of the first partition, and a settling trough is formed between two adjacent water-blocking rods.

[0012] In a preferred embodiment of this utility model, the guiding structure further includes a weir body, which is fixedly installed with the first partition plate, and the weir body is located near the port of the inlet pipe and is spaced apart from the inner wall of the diversion box.

[0013] In a preferred embodiment of this utility model, several ribs are fixedly installed inside the cavity of the water inlet pipe. The ribs are spiral plates, and multiple ribs are distributed in a ring array.

[0014] In a preferred embodiment of this utility model, the side wall of the second partition is fixedly connected to the end of the first partition, and the filter screen extends downward from one side of the second partition towards the third partition. Both the second and third partitions are provided with windows for water to pass through. The window of the second partition is located below the filter screen, and the window of the third partition is located above the filter screen.

[0015] This utility model provides a rainwater and sewage separation device. It has the following beneficial effects: 1. This rainwater and sewage separation device implements a two-stage physical separation process of inertial sedimentation and filtration, achieving efficient graded removal of impurities of different particle sizes in sewage. The unique inertial structure utilizes the gravity and inertia of the sediment itself to achieve separation, greatly reducing the risk of clogging caused by traditional reliance on filter screens, and improving the stability and reliability of system operation. The device structure is relatively simple, with the main moving part being the drain valve. The inclined filter screen design facilitates the sliding of impurities. Combined with optional automatic backwashing or sludge scraping mechanisms and automatic sand discharge function, it significantly reduces the frequency and intensity of daily cleaning and maintenance, saving labor costs. The entire device is integrated into a diversion box, with a compact structure and small footprint, making it easy to install sunken or directly buried in scenarios with limited space, such as municipal pipeline inspection wells and balcony drainage pipes. Its processing capacity can be flexibly adapted by adjusting the size of the diversion box and the filter screen pore size, making it suitable for rainwater and sewage separation needs in various occasions such as building balconies and underground pipe networks in residential areas.

[0016] 2. This rainwater and sewage separation device allows water to be delivered to one side of a weir through an inlet pipe. When the water level exceeds the weir level, it flows along the slope of the weir to one side, ensuring the water is evenly distributed. The water-blocking rod can be a cylinder or a rod with a trapezoidal end cross-section. When the water passes over the water-blocking rod, a jump phenomenon occurs due to the velocity difference. Sediment settles on one side of the water-blocking rod and falls from the settling trough into the collection chamber below the first baffle. The water continues to flow. This device can achieve sedimentation treatment of sediment in the water through physical structure, with good anti-clogging effect and high sediment separation efficiency.

[0017] 3. This rainwater and sewage separation device, by setting multiple ribs in the inlet pipe, cuts and slows down the rainwater transported by the inlet pipe. When the water is injected into the separation box cavity from the inlet pipe port, it will not be sprayed out in a bundle-shaped jet, thus ensuring the stability of the transition phenomenon and guaranteeing the separation effect of mud and sand. Attached Figure Description

[0018] Figure 1 This is one of the overall perspective views of this utility model; Figure 2 This is the second overall perspective view of the present utility model; Figure 3 This is a partial sectional view of the flow divider box of this utility model; Figure 4 This is a perspective view of the graded processing structure and guiding structure of this utility model; Figure 5 This is a partial cross-sectional view of the water inlet pipe of this utility model.

[0019] Legend: 10. Diversion box; 11. Inlet pipe; 12. Drain pipe; 13. Sand discharge pipe; 14. First partition; 15. Second partition; 16. Third partition; 17. Filter screen; 20. Weir; 21. Water-retaining rod; 22. Settling trough; 30. Rib. Detailed Implementation

[0020] A rainwater and sewage separation device, such as Figure 1 As shown, it includes: Diversion box 10 forms a hollow box. One end of the diversion box 10 is fixedly installed with an inlet pipe 11 for water supply, and the other end of the diversion box 10 is fixedly installed with a drain pipe 12 for drainage. The bottom of the diversion box 10 is fixedly installed with a sand discharge pipe 13 for sewage discharge. like Figure 3 As shown, a multi-stage treatment structure is installed inside the cavity of the diversion box 10 for multi-stage treatment of rainwater. The multi-stage treatment structure includes a first partition 14, a second partition 15, a third partition 16, and a filter screen 17. The first partition 14 is fixedly installed to the diversion box 10. The second partition 15 and the third partition 16 are both located on one side of the first partition 14 and are fixedly installed to the inner wall of the diversion box 10. The filter screen 17 is inclinedly arranged between the second partition 15 and the third partition 16, and its two ends are fixedly installed to the second partition 15 and the third partition 16, respectively. The diversion box 10 is a rectangular box with an open top. The top of the diversion box 10 is equipped with a removable sealing cover, which is secured by bolts. The first partition 14 is a rectangular plate, and the first partition 14 is the same width as the chamber of the distribution box 10. The first partition 14 is fully welded to the inner wall of the distribution box 10. The upper part of the first partition 14 is the treatment chamber, and the lower part of the first partition 14 is the collection chamber. The port of the water inlet pipe 11 is located in the treatment chamber, and the port of the first partition 14 is located in the collection chamber. The side wall of the second partition 15 is fixedly connected to the end of the first partition 14. The filter screen 17 extends downward from one side of the second partition 15 toward the third partition 16. Both the second partition 15 and the third partition 16 have windows for water to pass through. The window of the second partition 15 is located below the filter screen 17, and the window of the third partition 16 is located above the filter screen 17. In this scheme, rainwater is introduced into the diversion box 10 through the inlet pipe 11. The water flows from the top of the first partition 14, and after a transition phenomenon occurs at the top of the first partition 14, the sediment settles below the first partition 14 and is collected. The water then flows from the first partition 14 to one side of the second partition 15, and after being filtered by the inclined filter screen 17, the water enters the chamber on one side of the third partition 16 and is discharged by the drain pipe 12. A drain valve is installed at the port of the sand discharge pipe 13, which can be opened periodically to clean the sediment in the collection chamber. This scheme realizes a two-stage physical separation process of transition inertial sedimentation + filtration, achieving efficient graded removal of impurities of different particle sizes in sewage. The unique transition structure utilizes the gravity and inertia of the sediment itself to achieve separation, greatly reducing the traditional simple separation process. The system's stability and reliability are improved by eliminating the risk of clogging caused by filter 17. The device has a relatively simple structure, with the main moving part being the drain valve. The inclined design of filter 17 facilitates the sliding of impurities. Combined with optional automatic backwashing or slag scraping mechanisms and automatic sand removal function, the frequency and intensity of daily cleaning and maintenance are significantly reduced, saving labor costs. The entire device is integrated into a diversion box 10, which is compact and occupies a small area. It is easy to install in the sunken area or directly buried in scenarios with limited space, such as municipal pipeline inspection wells and balcony drainage pipes. Its processing capacity can be flexibly adapted by adjusting the size of the diversion box 10 and the filter mesh diameter of filter 17, making it suitable for rainwater and sewage diversion needs in various occasions such as building balconies and underground pipe networks in residential areas.

[0021] like Figure 3 and Figure 4 As shown, the guide structure is set at the top of the first partition 14 to guide the sewage sent in by the inlet pipe 11 and form a jump phenomenon; The guiding structure includes water-blocking rods 21 and settling troughs 22. Several water-blocking rods 21 are fixedly installed on the top of the first partition 14. Several settling troughs 22 are also opened on the top surface of the first partition 14. When water flows through the water-blocking rods 21, it will form a jump, causing the sediment to settle from the settling troughs 22 to the bottom of the first partition 14. The length of the water-blocking rods 21 is equal to the width of the first partition 14. A settling trough 22 is opened between two adjacent water-blocking rods 21. The guiding structure also includes a weir 20. The weir 20 is fixedly installed with the first partition 14. The weir 20 is close to the port of the inlet pipe 11 and is spaced from the inner wall of the diversion box 10. In this scheme, water is sent into one side of the weir 20 through the inlet pipe 11. When the water level exceeds the weir 20, it flows along the slope of the weir 20 to one side, which can ensure the uniform spread of water. The water-blocking rod 21 can be a cylinder or a rod with a trapezoidal end section. When the water passes over the water-blocking rod 21, a jump phenomenon is formed under the action of the flow velocity difference. The sediment settles on one side of the water-blocking rod 21 and falls into the collection chamber below the first baffle 14 from the sedimentation trough 22. The water continues to flow. The sediment in the water can be treated by means of physical structure, with good anti-clogging effect and high sediment separation efficiency.

[0022] like Figure 5 As shown, several ribs 30 are fixedly installed inside the cavity of the water inlet pipe 11. The ribs 30 are spiral plates, and multiple ribs 30 are distributed in a ring array. By setting multiple ribs 30 inside the water inlet pipe 11, the rainwater transported by the water inlet pipe 11 is sheared and slowed down by the ribs 30. When the water is injected into the cavity of the diversion box 10 from the port of the water inlet pipe 11, it will not be sprayed out in a bundle-like jet, which ensures the stability of the transition phenomenon and ensures the effect of sediment separation.

[0023] The working principle of this utility model is as follows: Multiple ribs 30 are set inside the inlet pipe 11. The ribs 30 shear and decelerate the rainwater transported by the inlet pipe 11. The water is sent to one side of the weir 20 through the inlet pipe 11. When the water level exceeds the weir 20, it flows along the slope of the weir 20 to one side of the weir 20, which can ensure the uniform spread of the water. The water-blocking rod 21 can be a cylinder or a rod with a trapezoidal end cross section. When the water passes over the water-blocking rod 21, a jump phenomenon is formed under the action of the flow velocity difference. The mud and sand settle on one side of the water-blocking rod 21 and fall into the collection chamber below the first partition 14 from the settling trough 22. The water flows from the first partition 14 to one side of the second partition 15. After being filtered by the inclined filter screen 17, the water enters the chamber on one side of the third partition 16 and is discharged by the drain pipe 12. The port of the sand discharge pipe 13 is equipped with a sewage valve, which can be opened periodically to clean the mud and sand in the collection chamber.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rainwater and sewage separation device, characterized in that, include: Diversion box (10), the diversion box (10) forms a hollow box body, one end of the diversion box (10) is fixedly installed with an inlet pipe (11) for water supply, the other end of the diversion box (10) is fixedly installed with a drain pipe (12) for drainage, and the bottom of the diversion box (10) is fixedly installed with a sand discharge pipe (13) for sewage discharge. A graded treatment structure is set inside the cavity of the diversion box (10) for multi-stage treatment of rainwater. The graded treatment structure includes a first partition (14), a second partition (15), a third partition (16), and a filter screen (17). The first partition (14) is fixedly installed with the diversion box (10). The second partition (15) and the third partition (16) are both set on one side of the first partition (14). The second partition (15) and the third partition (16) are both fixedly installed with the inner wall of the diversion box (10). The filter screen (17) is inclinedly set between the second partition (15) and the third partition (16). The two ends of the filter screen (17) are fixedly installed with the second partition (15) and the third partition (16) respectively. A guiding structure is set on top of the first partition (14) to guide the sewage delivered by the inlet pipe (11) and form a jump phenomenon.

2. The rainwater and sewage separation device according to claim 1, characterized in that: The diversion box (10) is a rectangular box with an open top. The top of the diversion box (10) is provided with a removable sealing cover, which is locked and sealed to the diversion box (10) by bolts.

3. The rainwater and sewage separation device according to claim 1, characterized in that: The first partition (14) is a rectangular plate. The first partition (14) is the same width as the chamber of the diversion box (10). The first partition (14) is fully welded to the inner wall of the diversion box (10). The upper part of the first partition (14) is the processing chamber, and the lower part of the first partition (14) is the collection chamber. The port of the water inlet pipe (11) is located in the processing chamber, and the port of the first partition (14) is located in the collection chamber.

4. The rainwater and sewage separation device according to claim 1, characterized in that: The guiding structure includes a water-blocking rod (21) and a settling trough (22). Several water-blocking rods (21) are fixedly installed on the top of the first partition (14). Several settling troughs (22) are also opened on the top surface of the first partition (14). When water flows through the water-blocking rod (21), it will form a jump, causing the sediment to settle from the settling trough (22) to below the first partition (14).

5. The rainwater and sewage separation device according to claim 4, characterized in that: The length of the water-blocking rod (21) is equal to the width of the first partition (14), and a settling trough (22) is opened between two adjacent water-blocking rods (21).

6. The rainwater and sewage separation device according to claim 4, characterized in that: The guiding structure also includes a weir (20), which is fixedly installed with the first partition (14). The weir (20) is close to the port of the inlet pipe (11) and is spaced from the inner wall of the diversion box (10).

7. The rainwater and sewage separation device according to claim 1, characterized in that: The water inlet pipe (11) has several ribs (30) fixedly installed inside its cavity. The ribs (30) are spiral plates, and multiple ribs (30) are arranged in a ring array.

8. The rainwater and sewage separation device according to claim 1, characterized in that: The side wall of the second partition (15) is fixedly connected to the end of the first partition (14). The filter screen (17) extends downward from one side of the second partition (15) toward the third partition (16). Both the second partition (15) and the third partition (16) are provided with windows for water to pass through. The window of the second partition (15) is located below the filter screen (17), and the window of the third partition (16) is located above the filter screen (17).

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