Rain and sewage diversion and interception well and diversion and interception method

Abstract

The invention provides a rainwater and sewage diversion and interception well and a diversion and interception method, and relates to the technical field of sewage wells, the rainwater and sewage diversion and interception well comprises a shell installed in a well body, the outer side of the shell is communicated with a water inlet pipeline and a water outlet pipeline, a separation device is arranged in the shell, and the separation device comprises a vertically arranged separation cylinder; a separation hole for liquid to pass through is formed in the side wall of the separation cylinder, and a liquid discharge assembly is arranged at the bottom of the separation cylinder and is communicated with the water outlet pipeline; an annular collecting channel is formed between the outer wall of the separating cylinder and the inner wall of the shell, a collecting device is arranged in the collecting channel, and a strip-shaped opening for liquid to penetrate through is formed in the side wall of the collecting device. According to the invention, a large amount of solid impurities in sewage can be collected efficiently in a centralized manner, the impact of a rain-sewage mixed medium on the device is smaller, the overall service life is longer, and the device is especially suitable for intercepting and shunting sewage in municipal pipelines.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage wells, and particularly to a rainwater and sewage diversion and interception well and a diversion and interception method. Background Art

[0002] In the middle and late stages of continuous rainfall, the pollutants in the rainwater decrease and can be directly discharged into the river. However, in the initial stage of rainfall, the rainwater contains a large amount of pollutants and needs to be discharged to the sewage treatment plant for professional treatment before being discharged into the river. The diversion and interception well can effectively divert the sewage at different time periods.

[0003] Rain and sewage mainly consist of two parts: a liquid part and solid pollutants. To prevent the random flow of solid pollutants from affecting the internal structure of the diversion and interception well, a special separation and collection device or crushing device is installed inside the diversion and interception well. Among them, the separation and collection device has low cost, low failure rate, low investment, and wide adaptability.

[0004] Among them, a fixed filter cover and a movable basket grille are relatively common. For the former, it can be used in the diversion and interception environment with less solid pollutants. When there are more solid pollutants, excessive solid pollutants will block the filter cover, affecting the normal flow of sewage. For the latter, it can move up and down to achieve regular cleaning and removal of solid pollutants. However, there are still technical problems such as high cleaning frequency, easy damage by impact, and high failure rate.

[0005] There are some spiral solid-liquid separation structures on the market. Their solid-liquid separation is achieved by the centrifugal force brought by the impact of water flow, which has high requirements for the flow rate of water. There is also a solid-liquid separation structure with an inner and outer double-layer filter cover on the market, but its method of removing solid pollutants is only applicable to the treatment of small-size and small-batch solid pollutants such as in families and laboratories, and it is difficult to be applicable to the treatment of large-size and large-batch sewage such as municipal sewage.

[0006] CN206219359U, CN116163397B, CN211200619U; the above patent documents can be used as references. Summary of the Invention

[0007] In view of the above problems, the present invention provides a rainwater and sewage diversion and interception well and a diversion and interception method. The invention can centrally and efficiently collect a large amount of solid impurities in sewage, is less impacted by the rain and sewage mixed medium, has a longer overall service life, and is particularly suitable for intercepting and diverting the sewage in municipal pipelines.

[0008] To solve the above problems, the technical solution adopted by the present invention is: A rain and sewage separation and interception well includes a housing installed inside the well body. The outside of the housing is connected to an inlet pipe and an outlet pipe. A separation device is arranged inside the housing. The separation device includes a vertically arranged separation cylinder. Separation holes for liquid to pass through are formed on the side wall of the separation cylinder. A liquid discharge assembly is arranged at the bottom of the separation cylinder and is communicated with the outlet pipe. An annular collection channel is formed between the outer wall of the separation cylinder and the inner wall of the housing. A collection device is arranged in the collection channel. Strip-shaped openings for liquid to pass through are formed on the side wall of the collection device. A collection chamber is formed inside the collection device. The inlet pipe and the collection channel are relatively arranged to control the rain and sewage mixed medium to have a tendency to flow concentrated in a first direction, and the opening of the collection chamber faces the side where the mixed medium flows.

[0009] Preferably, a plurality of the collection devices are arranged in the collection channel. The orientations of the plurality of collection devices are the same. An arc-shaped guiding device is further arranged inside the collection channel. The collection device is detachably connected to the guiding device.

[0010] Preferably, the collection device includes two bottom plates, a first side plate and a second side plate. The two bottom plates, the first side plate and the second side plate together form the collection chamber. The second side plate is attached to the inner wall of the housing. The first side plate is inclined and arranged between the inner wall of the housing and the separation cylinder. A plurality of the strip-shaped openings are arranged along the vertical surface of the first side plate.

[0011] Preferably, the two bottom plates and the second side plate are integrally formed. The first side plate is movably connected to the second side plate. The first side plate moves towards the second side plate to complete the compression of the solid pollutants in the collection chamber.

[0012] Preferably, an elastic element is arranged at the movable connection between the first side plate and the second side plate. The elastic element controls the first side plate to have a tendency to move away from the second side plate. A one-way locking device is arranged on the surface of the bottom plate. The one-way locking device is located on the side close to the second side plate.

[0013] Preferably, a telescopic limiting device is further arranged inside the housing. The limiting device is located on the moving path of the collection device. A pressure detection assembly is arranged inside the limiting device. After the pressure applied by the collection device to the limiting device exceeds a set threshold, the limiting device shrinks to allow the collection device to move in a specific direction.

[0014] Preferably, a rotary sealing device is arranged between the separation cylinder and the bottom of the housing. A driving device for driving the separation cylinder to rotate in a specific direction is further arranged outside the housing.

[0015] Preferably, the rotary sealing device includes a sealing base. A bent sealing gap is formed between the sealing base and the separation cylinder. The bottom of the sealing gap is communicated with a gas pumping pipeline, and gas is pumped into the sealing gap through the gas pumping pipeline to maintain the internal high-pressure state.

[0016] Preferably, the driving device includes a hydraulic impeller located inside the water outlet pipeline. The liquid discharging assembly includes a first liquid discharging pipeline that partially penetrates through the bottom of the housing and extends to the outside. A transmission assembly is arranged outside the first liquid discharging pipeline and connected to the hydraulic impeller.

[0017] A rainwater and sewage diversion and interception method using the above rainwater and sewage diversion and interception well includes the following steps: S1. Vertically arrange the collection device in the collection channel; S2. Introduce the rainwater and sewage mixed medium into the collection channel through the water inlet pipeline, and control the rainwater and sewage mixed medium to flow concentratedly in the first direction; S3. Most of the liquid in the rainwater and sewage mixed medium passes through the separation holes and finally discharges from the water outlet pipeline. A small part of the liquid in the rainwater and sewage mixed medium pushes the solid pollutants to flow into the collection device for automatic collection; S4. Regularly replace the collection device.

[0018] The beneficial effects of the present invention are as follows: Compared with the prior art, by arranging the collection device in the collection channel, the solid-liquid separation of sewage and the collection of solid impurities in sewage are located at different positions. Sewage can pass through the separation cylinder and finally quickly discharge from the bottom of the liquid discharge port, realizing efficient solid-liquid separation. At the same time, the sewage mixed medium has a tendency to flow concentratedly in the first direction (the direction where the collection device is located), and the solid impurities in the sewage can automatically enter the collection device for centralized collection. Compared with the traditional structure arranged at the outlet of the water inlet pipeline, the impact of the rainwater and sewage mixed medium on it is smaller, and the overall service life is longer. Moreover, the solid impurities here can enter the outer collection device for centralized collection without affecting the normal separation of sewage at the separation cylinder. Through the above structural design, a large amount of solid impurities in sewage can also be collected centrally and efficiently, which is especially suitable for intercepting and diverting sewage in municipal pipelines. Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 is for the present invention Figure 1 is a front view structural schematic diagram.

[0021] Figure 3 is for the present invention Figure 2 is a sectional structural schematic diagram taken along the A-A direction of the present invention.

[0022] Figure 4 is for the present invention Figure 1 is a side view structural schematic diagram.

[0023] Figure 5 For the present invention Figure 4 is a schematic cross-sectional structure view taken along the B-B direction.

[0024] Figure 6 For the present invention Figure 5 is a schematic enlarged structure view at position C.

[0025] Figure 7 For the present invention Figure 5 is a schematic enlarged structure view at position D.

[0026] Figure 8 is a schematic perspective structure view of the collection device of the present invention.

[0027] Figure 9 is a schematic perspective structure view of the separation device of the present invention.

[0028] In the figure: 100, housing; 1001, collection channel; 110, inspection opening; 120, water inlet pipe; 130, limiting device; 200, water outlet pipe; 210, first water outlet; 220, second water outlet; 230, flow dividing valve plate; 300, separation device; 3001, internal chamber; 310, separation cylinder; 311, separation hole; 320, liquid discharge port; 330, sealing device; 331, sealing base; 332, sealing gap; 333, air pumping pipe; 340, liquid discharge assembly; 341, second liquid discharge pipe; 342, first liquid discharge pipe; 343, transmission assembly; 344, driving device; 345, hydraulic impeller; 400, collection device; 4001, collection chamber; 410, second side plate; 420, bottom plate; 430, first side plate; 431, strip-shaped opening; 440, locking seat; 441, locking opening; 500, guiding device; 510, guiding base; 520, guiding track. Detailed implementation manners

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] Referring to the attached Figure 1 - attached Figure 9 , a rainwater and sewage diversion intercepting well includes a housing 100 installed in the well body. The outside of the housing 100 is communicated with a water inlet pipe 120 and a water outlet pipe 200. A separation device 300 is arranged inside the housing 100. The rainwater and sewage mixed medium containing solid impurities is discharged from the water inlet pipe 120 into the housing 100. The separation device 300 can effectively separate the rainwater and sewage mixed medium. Most of the solid impurities remain inside the housing 100 for centralized collection. The liquid in the rainwater and sewage mixed medium after preliminary separation is discharged from the bottom water outlet pipe 200.

[0031] It should be noted that a first water outlet 210 and a second water outlet 220 are provided at the bottom of the water outlet pipe 200, and a flow dividing valve plate 230 is provided between the first water outlet 210 and the second water outlet 220. Controlling the flow dividing valve plate 230 to be in different position states can divert the sewage and control the sewage to be discharged from different positions.

[0032] In the initial stage of rainfall, the rainwater contains a large amount of impurities such as oil stains and microorganisms, and this part of the sewage is relatively turbid. Control this part of the sewage to be discharged from the first water outlet 210 to the sewage treatment plant for purification and then discharged into the river; in the middle and late stages of continuous rainfall, this part of the rainwater is relatively clear after the initial flushing. This part of the sewage can be directly discharged into the river. By carrying out diversion and interception, different types of sewage can be respectively guided, realizing efficient treatment of sewage while reducing the burden of sewage treatment.

[0033] Specifically, the separation device 300 includes a vertically arranged separation cylinder 310. The side wall of the separation cylinder 310 is provided with separation holes 311 for liquid to pass through. The size and the number of distributed separation holes 311 are selected according to the characteristics of the sewage to be treated. A liquid discharge assembly 340 is provided at the bottom of the separation cylinder 310 and is communicated with the water outlet pipe 200; the sewage filtered by the separation cylinder 310 can be located in the internal cavity 3001. Under the action of gravity, the sewage can be discharged from the liquid discharge assembly 340 at the bottom. A liquid discharge port 320 adapted to the liquid discharge assembly 340 is opened at the bottom of the separation cylinder 310 to ensure the rapid discharge of sewage.

[0034] An annular collection channel 1001 is formed between the outer wall of the separation cylinder 310 and the inner wall of the housing 100. A collection device 400 is provided in the collection channel 1001. The collection device 400 can centrally collect the solid impurities in the rainwater. When the solid impurities collected in the collection device 400 exceed the load, the collection device 400 is pulled out for cleaning, avoiding the continuous sewage discharge being blocked due to the continuous accumulation of solid impurities in the collection channel 1001.

[0035] A strip-shaped opening 431 for liquid to pass through is formed on the side wall of the collection device 400. A collection chamber 4001 is formed inside the collection device 400. The water inlet pipe 120 is opposite to the collection channel 1001 to control the rain and sewage mixed medium to have a tendency to flow centrally in the first direction, and the opening of the collection chamber 4001 faces the side where the mixed medium flows. In summary, by arranging the collection device 400 in the collection channel 1001, the solid-liquid separation of sewage and the collection of solid impurities in the sewage are located at different positions. The sewage can pass through the separation cylinder 310 and finally be quickly discharged from the bottom of the liquid discharge port 320, achieving efficient solid-liquid separation. At the same time, the sewage mixed medium has a tendency to flow concentrated in the first direction (the direction where the collection device 400 is located), and the solid impurities in the sewage can automatically enter the collection device 400 for centralized collection. Compared with the traditional structure arranged at the outlet of the water inlet pipe 120, the impact of the rain-sewage mixed medium on it is smaller, and the overall service life is longer. Moreover, the solid impurities here can enter the outer collection device 400 for centralized collection, without affecting the normal separation of sewage at the separation cylinder 310. Through the above structural design, a large amount of solid impurities in the sewage can also be collected centrally and efficiently, which is especially suitable for intercepting and diverting sewage in municipal pipelines.

[0036] Specifically refer to the attached Figure 3 , it should be noted that the above first direction is the counterclockwise direction. Rainwater can flow in from the tangential direction of the housing 100, and can also clean the surface of the separation cylinder 310, avoiding the accumulation of solid impurities on the surface of the separation cylinder 310 and causing blockage, and can achieve efficient discharge of sewage. By adjusting the positions and states of the water inlet pipe 120 and the collection device 400, the above first direction can also be the clockwise direction, and the specific requirements can be customized according to the actual diversion and interception state.

[0037] Preferably, a plurality of collection devices 400 are arranged in the collection channel 1001, and the orientations of the plurality of collection devices 400 are the same. By means of the plurality of collection devices 400, the collection amount of solid impurities can be increased, and the empty window period is avoided when replacing the collection device 400, improving the collection effect of solid impurities in the collection channel 1001. An arc-shaped guiding device 500 is also arranged inside the collection channel 1001. The collection device 400 is detachably connected to the guiding device 500. The guiding device 500 has a notch, and the collection device 400 can be separated from the guiding device 500 at the notch to realize lifting and discharging from the housing 100. The collection device 400 can be relatively movably connected to the guiding device 500. When the liquid flow is small and the solid impurities are few, the collection device 400 can be located on the side close to the water inlet pipe 120 to collect solid impurities. When the liquid flow is large and there are many solid impurities on the surface of the collection device 400, at this time, the impact of the liquid flow on the collection device 400 is large, which can push the collection device 400 to move in the counterclockwise direction according to the attached Figure 3 direction, and finally move to one side of the maintenance port 110 to achieve locking. Subsequently, the staff can perform the replacement of the collection device 400 by loading and unloading on one side of the maintenance port 110.

[0038] Specifically, the collection device 400 includes two bottom plates 420, and also includes a first side plate 430 and a second side plate 410. The two bottom plates 420, the first side plate 430, and the second side plate 410 together form a collection chamber 4001. The solid impurities can finally enter the collection chamber 4001 during the flowing process for centralized collection. During the collection process, the solid impurities remain in the collection chamber 4001, and part of the liquid can pass through the strip-shaped openings 431 and finally enter the internal chamber 3001 and be discharged from the bottom.

[0039] Furthermore, the second side plate 410 is arc-shaped and fits against the inner wall of the housing 100. The first side plate 430 is arranged obliquely between the inner wall of the housing 100 and the separation cylinder 310, and a plurality of strip-shaped openings 431 are arranged along the vertical surface of the first side plate 430.

[0040] Here, the first side plate 430 is arranged obliquely, and the cross-section of the collection chamber 4001 can form a triangle with an arc-shaped side, which can divert and centrally collect the solid impurities. At the same time, under the scouring of the liquid flow and the action of centrifugal force, most of the solid impurities are collected on the side close to the second side plate 410, reducing the clogging state of the surface of the strip-shaped openings 431 and improving the collection efficiency of the collection device 400 for solid impurities.

[0041] Furthermore, the two bottom plates 420 are integrally formed with the second side plate 410, and the first side plate 430 is movably connected to the second side plate 410. The first side plate 430 moves towards the second side plate 410 to complete the compression of the solid pollutants in the collection chamber 4001.

[0042] Through the above structural design, the solid pollutants can be collected more efficiently, and they can be compressed and filtered to avoid the discharge of sewage and reduce the processing burden on the staff.

[0043] Here, a hinge or a rotating shaft and other structures can be installed between the second side plate 410 and the first side plate 430, and they are installed on the outer side of the second side plate 410, avoiding the jamming of the rotating joints to the greatest extent. Most of the solid impurities in municipal sewage are plant branches, leaves, and plastic pollutants, and the probability of jamming is extremely low. In the environment of sewage with some hard solid impurities such as stones and metals, a cleaning opening can be opened at the top bottom plate 420. The staff first controls the cleaning tool to pass through the cleaning opening to clean the movable joint, and finally realizes the closing and locking filtration of the second side plate 410 and the first side plate 430.

[0044] An elastic element is provided at the movable connection between the first side plate 430 and the second side plate 410. The elastic element controls the first side plate 430 to have a tendency to move away from the second side plate 410. Through the above structural design, the first side plate 430 is normally in a state of being in close contact with the outer surface of the separation cylinder 310. On the one hand, it can clean the surface of the separation cylinder 310 to avoid clogging of the separation holes 311. On the other hand, it can also reduce the gap between the separation cylinder 310 and the first side plate 430, and can collect solid pollutants to the greatest extent.

[0045] A one-way locking device is provided on the surface of the bottom plate 420. The one-way locking device is located on the side close to the second side plate 410. Through the one-way locking device, the second side plate 410 and the first side plate 430 can be locked unidirectionally. After the first side plate 430 moves to a position close to the second side plate 410, the locking is automatically completed, further reducing the operation burden of the staff.

[0046] The approach between the second side plate 410 and the first side plate 430 described above can be assisted by an electric fixture for processing; in some relatively complex environments, the guiding device 500 described above can also be selected to control the position of the collection device 400 by means of electric assistance. The structures of the above electric fixture and electric assistance can be adaptively selected according to the actual situation.

[0047] A telescopic limiting device 130 is also provided inside the housing 100. The limiting device 130 is located on the moving path of the collection device 400. Through the limiting device 130, the position of the collection device 400 can be restricted. When the liquid flow is large, the limiting device 130 can be supported and limited, and the limiting device 130 is controlled to collect solid impurities efficiently at a relatively constant position, avoiding the influence of the large liquid flow on the collection effect of the collection device 400; a pressure detection component is provided inside the limiting device 130. After the pressure exerted by the collection device 400 on the limiting device 130 exceeds the set threshold, the limiting device 130 contracts to allow the collection device 400 to move in a specific direction. The above set threshold can be adjusted according to the actual situation, and can be controlled by networking in the background, and can be automatically adjusted according to the size of the liquid flow, realizing intelligent control.

[0048] The above limiting device 130 can be selected as a hydraulic telescopic structure or an electric control telescopic structure, and can be adaptively selected according to the size of the collection device 400 and the density and quantity of solid impurities.

[0049] A rotating sealing device 330 is provided at the bottom of the separation cylinder 310 and the housing 100. A driving device 344 for driving the separation cylinder 310 to rotate in a specific direction is also provided outside the housing 100. Through the driving device 344, the separation cylinder 310 can be controlled to rotate in the direction opposite to the liquid flow, that is, Figure 3Rotate clockwise; through the above structural design, during the clockwise rotation of the separation cylinder 310, different positions on the surface of the separation cylinder 310 can rotate to the side of the water inlet pipe 120, achieving efficient cleaning while filtering, and further improving the effect of sewage filtration.

[0050] Here, the separation cylinder 310 is in a slow rotation state, which will not affect the collection of solid impurities; the rotation direction of the separation cylinder 310 here is consistent with the length direction of the first side plate 430, and the first side plate 430 can also clean the separation holes 311 on the surface of the separation cylinder 310, avoiding accidents.

[0051] Specifically; the rotary sealing device 330 includes a sealing base 331. A bent sealing gap 332 is formed between the sealing base 331 and the separation cylinder 310. The bottom of the sealing gap 332 is connected to a gas pumping pipe 333. Gas is pumped into the sealing gap 332 through the gas pumping pipe 333 to maintain the internal high-pressure state. By continuously pumping gas into the sealing gap 332, the internal high-pressure state can be maintained, which largely avoids the influence of sewage entering the sealing gap 332 on the rotation of the separation cylinder 310; at the same time, the gas bubbles can also be discharged from the surface of the sealing gap 332, and the discharged bubbles can be mixed with the liquid flow to efficiently clean the surface of the separation cylinder 310, improving the cleaning effect of the surface of the separation cylinder 310.

[0052] Specifically; the driving device 344 includes a hydraulic impeller 345 located inside the water outlet pipe 200. When the liquid flow is large, the liquid flow can drive the hydraulic impeller 345 to rotate. The liquid discharge assembly 340 includes a first liquid discharge pipe 342 that partially penetrates the bottom of the housing 100 and extends to the outside. A transmission assembly 343 is arranged outside the first liquid discharge pipe 342 and is connected to the hydraulic impeller 345. Through the above structural design, when the liquid flow is large, the liquid flow can be used to drive the separation cylinder 310 to rotate, achieving efficient utilization and reducing energy consumption; at the same time, the rotation speed of the separation cylinder 310 can change synchronously according to the speed of the liquid flow, and the cleaning effect on the surface of the separation cylinder 310 can be automatically improved as the solid pollutants increase.

[0053] Here, the first liquid discharge pipe 342 is fixedly connected to the separation cylinder 310. A relatively fixed second liquid discharge pipe 341 is also arranged outside the first liquid discharge pipe 342. The second liquid discharge pipe 341 is fixedly connected to the water outlet pipe 200, and a rotary sealing element is arranged between the second liquid discharge pipe 341 and the first liquid discharge pipe 342, ensuring the normal rotation of the separation cylinder 310 while ensuring the normal discharge of sewage.

[0054] An automatic power motor is also arranged in the driving device 344. When the liquid flow is small, the position and state of the separation cylinder 310 can be selectively rotationally controlled as needed, meeting the control requirements.

[0055] A rain and sewage diversion and interception method, using the above rain and sewage diversion and interception well, includes the following steps: S1. Vertically arrange the collection device 400 in the collection channel 1001; arrange the collection device 400 at a position close to the inlet pipe 120, and the opening of the collection device 400 faces the inlet pipe 120 to collect solid impurities.

[0056] S2. Introduce the rain and sewage mixed medium into the collection channel 1001 through the inlet pipe 120, and control the rain and sewage mixed medium to flow concentratedly in the first direction; as shown in the appendix, the rain and sewage mixed medium flows concentratedly in the counterclockwise direction. Finally, the solid impurities enter the collection device 400 for collection, and the liquid passes through the separation hole 311 into the internal chamber 3001 and finally discharges from the bottom. Figure 3 As shown, the rain and sewage mixed medium flows concentratedly in the counterclockwise direction. Finally, the solid impurities enter the collection device 400 for collection, and the liquid passes through the separation hole 311 into the internal chamber 3001 and finally discharges from the bottom.

[0057] S3. Most of the liquid in the rain and sewage mixed medium passes through the separation hole 311 and finally discharges from the outlet pipe 200, and a small part of the liquid in the rain and sewage mixed medium pushes the solid pollutants to flow into the collection device 400 for automatic collection.

[0058] S4. Regularly replace the collection device 400. When the solid impurities collected by the collection device 400 exceed the set threshold, a signal is sent to the staff, and the corresponding collection device 400 is replaced by the staff, avoiding continuous accumulation of solid impurities and ensuring the ability to continuously treat sewage.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rainwater and sewage diversion interception well, comprising a housing (100) installed in a well body, the outer side of the housing (100) being connected to a water inlet pipe (120) and a water outlet pipe (200), and a separation device (300) being arranged inside the housing (100), characterized in that: The separation device (300) comprises a vertically arranged separation cylinder (310), a side wall of the separation cylinder (310) is provided with a separation hole (311) for liquid to pass through, and a liquid discharge assembly (340) is provided at the bottom of the separation cylinder (310) and is connected to a water outlet pipe (200); An annular collecting channel (1001) is formed between the outer wall of the separation cylinder (310) and the inner wall of the shell (100); a collecting device (400) is arranged in the collecting channel (1001); a strip-shaped opening (431) for liquid to pass through is formed on the side wall of the collecting device (400); a collecting chamber (4001) is formed inside the collecting device (400); the water inlet pipe (120) and the collecting channel (1001) are relatively controlled so that the rainwater-sewage mixed medium has a tendency to flow in a concentrated manner in a first direction, and the opening of the collecting chamber (4001) faces the side where the mixed medium flows.

2. The rainwater and sewage diversion interception well according to claim 1 is characterized in that: A plurality of the collecting devices (400) are arranged in the collecting channel (1001), and the plurality of the collecting devices (400) are oriented in the same direction. An arc-shaped guiding device (500) is also arranged inside the collecting channel (1001), and the collecting device (400) and the guiding device (500) are detachably connected.

3. The rainwater and sewage diversion interception well according to claim 1 or 2, characterized in that: The collecting device (400) comprises two bottom plates (420), a first side plate (430) and a second side plate (410); the two bottom plates (420) and the first side plate (430) and the second side plate (410) together form a collecting chamber (4001); the second side plate (410) is in contact with the inner wall of the shell (100); the first side plate (430) is tilted between the inner wall of the shell (100) and the separation cylinder (310); and a plurality of strip-shaped openings (431) are provided along the vertical surface of the first side plate (430).

4. The rainwater and sewage diversion interception well according to claim 3 is characterized in that: The two bottom plates (420) are integrally formed with the second side plate (410); the first side plate (430) is movably connected to the second side plate (410); the first side plate (430) moves toward the second side plate (410) to complete the compression of solid pollutants in the collection chamber (4001).

5. The rainwater and sewage diversion interception well according to claim 4 is characterized in that: An elastic element is provided at the movable connection between the first side plate (430) and the second side plate (410), and the elastic element is used to control the first side plate (430) to have a tendency to move away from the second side plate (410). A one-way locking device is provided on the surface of the bottom plate (420), and the one-way locking device is located on a side close to the second side plate (410).

6. The rainwater and sewage diversion interception well according to claim 2, characterized in that: A retractable limiting device (130) is also provided inside the housing (100); the limiting device (130) is located on the moving path of the collecting device (400); a pressure detection component is provided inside the limiting device (130); when the pressure applied by the collecting device (400) to the limiting device (130) exceeds a set threshold, the limiting device (130) contracts to allow the collecting device (400) to move in a certain direction.

7. The rainwater and sewage diversion interception well according to claim 1, characterized in that: A rotating sealing device (330) is provided between the separation cylinder (310) and the bottom of the shell (100), and a driving device (344) for driving the separation cylinder (310) to rotate in a directional manner is also provided on the outside of the shell (100).

8. The rainwater and sewage diversion interception well according to claim 7, characterized in that: The rotary sealing device (330) comprises a sealing base (331), a bent sealing gap (332) is formed between the sealing base (331) and the separation cylinder (310), and a pumping gas pipeline (333) is connected to the bottom of the sealing gap (332), and gas is pumped into the sealing gap (332) through the pumping gas pipeline (333) to maintain an internal high pressure state.

9. The rainwater and sewage diversion interception well according to claim 7, characterized in that: The driving device (344) comprises a hydraulic impeller (345) located inside the water outlet pipe (200); the liquid discharge assembly (340) comprises a first liquid discharge pipe (342) partially penetrating the bottom of the housing (100) and extending to the outside; a transmission assembly (343) connected to the hydraulic impeller (345) is arranged outside the first liquid discharge pipe (342).

10. A method for separating and intercepting rainwater and sewage, characterized in that: Using the rainwater and sewage diversion interception well according to any one of claims 1 to 9 comprises the following steps: S1. vertically arranging the collecting device (400) in the collecting channel (1001); S2, introducing the rainwater-sewage mixture into the collection channel (1001) through the water inlet pipe (120), and controlling the rainwater-sewage mixture to flow in a concentrated manner in a first direction; S3, most of the liquid in the rainwater-waste mixture passes through the separation hole (311) and is finally discharged from the outlet pipe (200), and a small portion of the liquid in the rainwater-waste mixture pushes the solid pollutants to flow into the collection device (400) for automatic collection; S4. Regularly replace the collecting device (400).

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