Rainwater and sewage intercepting well and rain and sewage diversion control method

Abstract

The invention discloses a rainwater and sewage intercepting well and a rainwater and sewage diversion control method. The rainwater and sewage intercepting well comprises a shaft and an access cover arranged at the top of the shaft. Two partition plates are horizontally arranged in the shaft, the two partition plates are vertically arranged in a spaced mode to divide the shaft into a rainwater collecting area, an adjusting buffer area and a sewage collecting area from top to bottom, and water passing openings are formed in the two partition plates; a shutoff valve is arranged at the water passing opening and used for adjusting the opening degree of the water passing opening. A rainwater inlet is formed in the side wall of the shaft corresponding to the rainwater collecting area; a rainwater outlet is formed in the side wall, corresponding to the adjusting buffer area, of the shaft, and a flow adjusting valve is arranged at the rainwater outlet; a sewage inlet is formed in the side wall, corresponding to the sewage collecting area, of the shaft, a check valve is arranged at the sewage inlet, and a sewage outlet is formed in the bottom, corresponding to the sewage collecting area, of the shaft. According to the invention, sudden rainfall conditions or drainage faults can be dealt with efficiently in real time, the rainwater and sewage diversion efficiency of the rainwater and sewage catch basin is improved, and the rationality and stability of the catch basin structure are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of municipal drainage, and in particular relates to a rainwater and sewage interception well and a rainwater and sewage diversion control method. Background Art

[0002] As a key facility in urban sewage treatment, interception wells are used to collect multiple pollution sources into one well and then direct them to sewage treatment plants for treatment. This facility plays a vital role in the urban drainage system.

[0003] However, the traditional interception well structure has exposed some problems in practical application. Although it has achieved centralized sewage treatment to a certain extent, its interception method is often not flexible enough. It is difficult to accurately control the sewage entering the sewage pipe network and the rainwater being discharged into the natural water body according to the real-time changing rain and sewage conditions. As a result, sewage may mix with the rainwater system, causing water pollution; on the contrary, when there is excessive rainwater, rainwater may flow into the sewage pipe network, thereby increasing the burden of sewage treatment.

[0004] In addition, traditional interception wells rely on manual on-site operations, which is not only inefficient but also difficult to respond to sudden rainfall or drainage failures in a timely manner. On the other hand, some traditional interception wells also have shortcomings in structural design. They may affect long-term stable operation and rainwater and sewage diversion due to problems such as component damage and poor sealing. These problems not only increase maintenance costs, but also pose potential risks to the city's drainage system.

[0005] Therefore, how to respond to sudden rainfall or drainage failures in real time and efficiently, improve the rainwater and sewage diversion efficiency of the rainwater and sewage interception well, and ensure the rationality and stability of the interception well structure are technical problems that need to be urgently solved by technical personnel in this field. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a rainwater and sewage interception well and a control method for rainwater and sewage diversion. The present invention can respond to sudden rainfall or drainage failures in real time and efficiently, improve the rainwater and sewage diversion efficiency of the rainwater and sewage interception well, and ensure the rationality and stability of the interception well structure.

[0007] The technical solution of the present invention is achieved in this way: A rainwater and sewage interception well comprises a well shaft and an inspection cover arranged at the top of the well shaft to close the top of the well shaft; two partitions are arranged horizontally in the well shaft, and the two partitions are arranged at intervals up and down to divide the well shaft from top to bottom into a rainwater collection area, a regulating buffer area and a sewage collection area, and water outlets are provided on the two partitions to connect the rainwater collection area, the regulating buffer area and the sewage collection area; at the same time, a shut-off valve is provided at the water outlet for adjusting the opening of the water outlet.

[0008] A rainwater inlet is provided on the side wall of the well corresponding to the rainwater collection area, which is used to connect to the rainwater inlet pipe; a rainwater outlet is provided on the side wall of the well corresponding to the adjustment buffer zone, which is used to connect to the rainwater outlet pipe, and a flow regulating valve is provided at the rainwater outlet; a sewage inlet is provided on the side wall of the well corresponding to the sewage collection area, which is used to connect to the sewage inlet pipe, and a check valve is provided at the sewage inlet; a sewage outlet is provided at the bottom of the well corresponding to the sewage collection area, which is used to connect to the sewage outlet pipe.

[0009] Furthermore, a controller is provided in the rainwater collection area, and the controller is located at the top of the wellbore and is connected to the shut-off valve and the flow regulating valve to control the opening of the shut-off valve and the flow regulating valve.

[0010] Furthermore, liquid level sensors and water quality sensors are provided in the rainwater collection area, regulation buffer area and sewage collection area, and flow sensors are provided at the rainwater inlet, rainwater outlet and sewage outlet. The controller is connected to all liquid level sensors, water quality sensors and flow sensors to facilitate controlling the opening of the shut-off valve and the flow regulating valve according to the acquired liquid level data, water quality data and flow data.

[0011] Furthermore, the water outlet is arranged at the center of the partition, and the upper surface of the partition is inclined upward from the water outlet to the outer edge of the partition, and the inclination angle is 10-15°.

[0012] Furthermore, a plurality of auxiliary water holes are evenly distributed on the baffle corresponding to the outer side of the water outlet, and a first electric butterfly valve is provided at the auxiliary water hole. The controller is connected to the first electric butterfly valve to control the opening and closing of the first electric butterfly valve.

[0013] Furthermore, an emergency water outlet is provided on the side wall of the wellbore corresponding to the adjustment buffer zone, which is used to connect an emergency drainage pipe, and a second electric butterfly valve is provided at the emergency water outlet. The controller is connected to the second electric butterfly valve to control the opening and closing of the second electric butterfly valve.

[0014] Furthermore, the shut-off valve comprises a gate corresponding to the size of the water outlet and a sealing rubber arranged on the edge of the gate, the gate is controlled by a driving mechanism to adjust the opening of the shut-off valve, and the driving mechanism is connected to a controller.

[0015] Furthermore, a grille is provided at the rainwater inlet to prevent debris in the rainwater from entering the wellbore.

[0016] The above-mentioned rainwater and sewage diversion control method of a rainwater and sewage interception well performs rainwater and sewage diversion control according to the following different working conditions: (1) Sunny day conditions: Both shut-off valves are closed, so that all sewage entering the sewage collection area flows into the sewage pipe network through the sewage outlet.

[0017] (2) Under rainfall conditions: At the beginning of rainfall, when the water quality data of the rainwater collection area is less than the preset threshold, close the intercept valve between the regulation buffer area and the sewage collection area, adjust the intercept valve between the rainwater collection area and the regulation buffer area, and adjust the flow regulating valve at the same time to allow rainwater to be discharged from the rainwater outlet.

[0018] In the middle and late stages of rainfall, gradually increase the opening of the flow regulating valve and the shut-off valve between the rainwater collection area and the regulating buffer zone so that all rainwater can be discharged from the rainwater outlet.

[0019] or At the beginning of rainfall, when the water quality data of the rainwater collection area is greater than the preset threshold, close the shut-off valve between the regulation buffer zone and the sewage collection area, and adjust the opening of the shut-off valve between the rainwater collection area and the regulation buffer zone to allow the rainwater in the rainwater collection area to slowly enter the regulation buffer zone and undergo initial sedimentation in the regulation buffer zone.

[0020] After entering the middle and late stages of rainfall, when the water quality data in the rainwater collection area is less than the preset threshold, adjust the opening of the shut-off valve between the regulation buffer zone and the sewage collection area to allow the rainwater in the regulation buffer zone to enter the sewage collection area. When the water quality data in the regulation buffer zone is less than the preset threshold, close the shut-off valve between the regulation buffer zone and the sewage collection area, and at the same time increase the opening of the shut-off valve between the rainwater collection area and the regulation sewage collection area, and adjust the flow regulating valve to allow the rainwater to be discharged from the rainwater outlet.

[0021] Furthermore, an emergency water outlet is provided on the side wall of the wellbore corresponding to the adjustment buffer zone, which is used to connect the emergency drainage pipe, and a second electric butterfly valve is provided at the emergency water outlet. The controller is connected to the second electric butterfly valve to control the opening and closing of the second electric butterfly valve; when the rainfall exceeds the preset value, the second electric butterfly valve is opened to discharge part of the rainwater from the emergency water outlet.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. The wellbore of the present invention includes a rainwater collection area, a regulating buffer area and a sewage collection area. The regulating buffer area can temporarily store heavily polluted rainwater at the beginning of rainfall to prevent rainwater from being directly discharged into natural water bodies; it can also prevent rainwater that meets direct discharge standards from entering the sewage network in the middle and late stages of rainfall, thereby increasing the burden of sewage treatment.

[0023] In addition, the regulating buffer zone can balance the water flow, temporarily store excess water, and prevent excessive water flow from impacting the system. At the same time, the rainwater discharge rate can be adjusted according to actual needs to ensure smooth and efficient drainage and avoid impact on equipment parts. It can effectively extend the service life of the equipment and reduce maintenance frequency and costs.

[0024] 2. The present invention arranges water inlets and a plurality of auxiliary water holes on the partitions between the rainwater collection area and the regulating buffer area, and between the regulating buffer area and the sewage collection area, and through the shut-off valve on the water inlet and the first electric butterfly valve on the auxiliary water hole, the water flow can be finely controlled and adjusted under special circumstances such as abnormal water quality and sudden change of water level, thereby realizing accurate diversion of rainwater and sewage, and further effectively reducing the pollution of sewage to natural water bodies and the adverse effects of rainwater on the sewage network.

[0025] 3. The present invention has a complete automatic control function, without frequent manual intervention on site, and can automatically adjust the operating status of the interception well according to the actual drainage situation. At the same time, with the help of the communication module, the connection with the remote monitoring platform is realized, and the management personnel can remotely grasp the operating status of the interception well in real time, perform remote operation and management, which can greatly improve the management efficiency of the drainage system and reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 -Schematic diagram of the structure of the present invention.

[0027] Figure 2 -Block diagram of rainwater and sewage interception well control principle.

[0028] Among them: 1-wellbore; 2-rainwater inlet pipe; 3-sewage inlet pipe; 4-rainwater collection area; 5-sewage collection area; 6-regulation buffer zone; 7-equipment installation area; 8-first shut-off valve; 9-second shut-off valve; 10-rainwater outlet pipe; 11-sewage outlet pipe; 12-emergency drainage pipe; 13-inspection cover; 14-liquid level sensor; 15-water quality sensor; 16-flow sensor; 17-first electric butterfly valve; 18-controller; 19-grating; 20-telescopic rubber sealing tube; 21-flow regulating valve; 22-check valve. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] See also Figure 1 A rainwater and sewage interception well comprises a well shaft 1 and an inspection cover 13 arranged on the top of the well shaft 1 to close the top of the well shaft 1; two partitions are horizontally arranged in the well shaft 1, and the two partitions are spaced apart from each other to divide the well shaft 1 from top to bottom into a rainwater collection area 4, a regulating buffer area 6 and a sewage collection area 5, and water outlets are provided on the two partitions to connect the rainwater collection area 4, the regulating buffer area 6 and the sewage collection area 5; at the same time, a shut-off valve is provided at the water outlet, wherein the shut-off valve between the rainwater collection area and the regulating buffer area is a first shut-off valve 8, and the shut-off valve between the regulating buffer area and the sewage collection area is a second shut-off valve 9, and the two shut-off valves are used to adjust the opening of the corresponding water outlets.

[0031] A rainwater inlet is provided at the middle and upper part of the side wall of the wellbore 1 corresponding to the rainwater collection area 4, which is used to connect the rainwater inlet pipe 2 to introduce rainwater from the urban rainwater network; a rainwater outlet is provided at the middle and upper part of the side wall of the wellbore 1 corresponding to the regulating buffer zone 6, which is used to connect the rainwater outlet pipe 10 to discharge the rainwater in the regulating buffer zone into external rivers, lakes and other natural water bodies, and a flow regulating valve 21 is provided at the rainwater outlet; a sewage inlet is provided on the side wall of the wellbore 1 corresponding to the sewage collection area 5, which is used to connect the sewage inlet pipe 3 to introduce sewage from the urban sewage pipe, and a check valve 22 is provided at the sewage inlet to prevent the sewage in the sewage collection area from flowing back into the sewage pipe, and a sewage outlet is provided at the bottom of the wellbore 1 corresponding to the sewage collection area 5, which is used to connect the sewage outlet pipe 11 to discharge into the urban sewage network and enter the sewage treatment plant for treatment.

[0032] Here, a regulating buffer zone is set between the rainwater collection area and the sewage collection area. At the beginning of rainfall, when the water quality data of the rainwater collection area is greater than the preset threshold, the second interception valve between the regulating buffer zone and the sewage collection area can be closed, and the opening of the first interception valve between the rainwater collection area and the regulating buffer zone can be adjusted to allow the rainwater in the rainwater collection area to slowly enter the regulating buffer zone and undergo preliminary precipitation in the regulating buffer zone. In this way, the regulating buffer zone can temporarily store heavily polluted rainwater at the beginning of rainfall to prevent rainwater from being directly discharged into natural water bodies. After entering the middle and late stages of rainfall, when the water quality data of the rainwater collection area is less than the preset threshold, the second interception valve between the regulating buffer zone and the sewage collection area can be adjusted to allow rainwater in the regulating buffer zone to enter the sewage collection area. When the water quality data in the regulating buffer zone is less than the preset threshold, the second interception valve between the regulating buffer zone and the sewage collection area is closed, and the flow regulating valve is adjusted to allow rainwater to be discharged from the rainwater outlet. The setting of the regulating buffer zone in this way can prevent rainwater that meets the direct discharge standard from entering the sewage pipe network, thereby increasing the burden of sewage treatment.

[0033] At the same time, the regulating buffer zone can also balance the water flow, temporarily store excess water, and prevent excessive water flow from impacting the system. At the same time, the rainwater discharge rate can be adjusted according to actual needs to ensure smooth and efficient drainage.

[0034] In order to ensure that the sewage in the sewage collection area can be stably discharged into the sewage network for sewage treatment, the sewage outlet is connected with a telescopic rubber sealing tube, which is connected to the sewage outlet pipe through the telescopic rubber sealing tube. The telescopic rubber sealing tube can adapt to different installation angles and pipeline displacement conditions to ensure the sealing of the connection.

[0035] The shaft is made of high-strength, corrosion-resistant fiberglass. The specific shape of the shaft is not limited and can be round or square (square or rectangular, etc.), but is generally round for higher strength.

[0036] During specific implementation, a controller 18 is provided in the rainwater collection area 4, and the controller 18 is located at the top of the wellbore, specifically can be set in the area above the rainwater inlet, and is connected to the first shut-off valve 8, the second shut-off valve 9 and the flow regulating valve 21 to control the opening of the shut-off valve and the flow regulating valve 21.

[0037] like Figure 1 As shown, an equipment installation area 7 for installing and placing a controller 18 is provided in the rainwater collection area 4, and the equipment installation area here is surrounded by a plurality of horizontal partitions and vertical partitions.

[0038] During specific implementation, liquid level sensors 14 and water quality sensors 15 are provided in the rainwater collection area 4, the regulating buffer area 6 and the sewage collection area 5. At the same time, flow sensors 16 are provided at the rainwater inlet, the rainwater outlet and the sewage outlet. The controller 18 is connected to all the liquid level sensors 14, the water quality sensors 15 and the flow sensors 16, so as to control the opening of the first shut-off valve 8, the second shut-off valve 9 and the flow regulating valve 21 according to the acquired liquid level data, water quality data and flow data.

[0039] The water quality index data here include but are not limited to ammonia nitrogen, COD, BOD and pH.

[0040] In a specific implementation, the water outlet is arranged at the center of the partition, and the upper surface of the partition is inclined upward from the water outlet to the outer edge of the partition, and the inclination angle is 10-15°.

[0041] The upper surface of the partition is inclined to facilitate guiding the rainwater in the rainwater collection area and the regulation buffer area to enter the regulation buffer area and the sewage collection area more smoothly through the water outlet, thereby effectively optimizing the flow path of rainwater and sewage in the interception well and improving the interception efficiency.

[0042] In specific implementation, a number of auxiliary water holes are evenly distributed on the baffle corresponding to the outer side of the water outlet, and a first electric butterfly valve 17 is provided at the auxiliary water hole. The controller 18 is connected to the first electric butterfly valve 17 to control the opening and closing of the first electric butterfly valve 17.

[0043] By setting multiple auxiliary water holes around the water outlet and installing the first electric butterfly valve on the auxiliary water holes, the water flow can be finely controlled and adjusted in special cases such as abnormal water quality and sudden change of water level, so as to achieve more accurate rainwater and sewage diversion. For example, when the water quality data entering the rainwater collection area exceeds the set threshold, that is, it does not meet the direct discharge standard, the first interception valve can be closed, and the opening of the first electric butterfly valve between the rainwater collection area and the regulation buffer zone can be adjusted to allow the rainwater in the rainwater collection area to slowly enter the regulation buffer zone, so that the rainwater can be precipitated and purified in the regulation buffer zone, so that smaller sediments in the rainwater can be precipitated.

[0044] For example, when the water quality data in the rainwater collection area is less than the set threshold and the liquid level in the rainwater collection area is high, the first shut-off valve can be fully opened while adjusting the opening of the first electric butterfly valve between the rainwater collection area and the regulation buffer zone, so that the rainwater in the rainwater collection area can stably enter the regulation buffer zone.

[0045] During specific implementation, an emergency water outlet is provided on the side wall of the wellbore 1 corresponding to the adjustment buffer zone 6, which is used to connect the emergency drainage pipe 12, and a second electric butterfly valve is provided at the emergency water outlet. The controller 18 is connected to the second electric butterfly valve to control the opening and closing of the second electric butterfly valve.

[0046] When encountering extreme rainfall weather and the rainfall far exceeds the normal level, the water level in each area rises rapidly, and the liquid level sensor transmits the over-water level signal to the control system. In addition to reasonably adjusting the opening of the first shut-off valve and the corresponding first electric butterfly valve, the control system also controls the flow regulating valve at the rainwater outlet to increase the opening, speed up the rainwater discharge rate, and at the same time open the second electric butterfly valve of the emergency drainage outlet in the adjustment buffer zone to assist drainage, avoid excessive water accumulation in the wellbore causing flooding and other hazards to the surrounding environment, and ensure the safety and stability of the entire drainage system under extreme conditions.

[0047] In a specific implementation, the first shut-off valve 8 and the second shut-off valve 9 include gates corresponding to the water outlets and sealing rubbers arranged on the edges of the gates. The gates are controlled by a driving mechanism to adjust the opening of the shut-off valves. The driving mechanism is connected to the controller 18 .

[0048] The driving mechanism here can be a hydraulic cylinder, and the gate is a double-layer structure consisting of a stainless steel plate and a wear-resistant rubber layer, in which the wear-resistant rubber layer is located on the upper side. A sealing rubber is provided on the edge of the gate, so that when the shut-off valve is completely closed, the shut-off valve can fit tightly with the inner wall of the water outlet to prevent water leakage.

[0049] During specific implementation, a grille 19 is provided at the rainwater inlet to prevent larger debris such as leaves in the rainwater from entering the shaft 1 and causing blockage inside the shaft 1 .

[0050] The controller has a sealed, moisture-proof and dust-proof protective shell, and integrates electrical components such as a programmable logic controller (PLC), relays, power modules and communication modules.

[0051] Programmable Logic Controller (PLC): As the core of the control system, it receives real-time data from liquid level sensors, water quality sensors and flow sensors, and performs logical judgments and calculations according to pre-set control programs, generates corresponding control instructions, and controls actuators such as shut-off valves, flow control valves and electric butterfly valves to achieve intelligent diversion and discharge control of rainwater and sewage.

[0052] Power supply module: It consists of a mains power supply line and a backup lithium battery pack. When the mains power is normal, the power conversion circuit is used to supply power to the entire control system and related equipment, and the lithium battery pack is charged at the same time. When the mains power is cut off, it automatically switches to the lithium battery pack for power supply, ensuring that the intercepting well can still operate normally in a short period of time (not less than 2 hours) and maintain the basic functions of the drainage system.

[0053] Communication module: It has wired (Ethernet interface) and wireless (4G / 5G communication module) communication functions, which can upload the operating status data of the interception well (such as sensor data, interception gate opening, equipment failure information, etc.) to the remote monitoring platform in real time. At the same time, it can also receive remote control instructions from the remote monitoring platform, making it convenient for managers to remotely monitor and operate the interception well.

[0054] The control principle block diagram of the electrical components such as the programmable logic controller (PLC), relays, power modules and communication modules in the controller is as follows Figure 2 As shown, in actual application, rainwater and sewage diversion control is carried out according to different working conditions, and the control method is as follows: (1) Sunny day conditions: On sunny days, sewage continues to flow into the sewage collection area through the sewage inlet. The liquid level sensor in the sewage collection area detects the water level change in the sewage collection area, and the water quality sensor confirms that the inflowing liquid is sewage. At this time, after receiving the relevant data, the controller controls the second shut-off valve between the sewage collection area and the adjustment buffer zone to remain closed, and at the same time closes the corresponding first electric butterfly valve to ensure that all sewage flows into the sewage network through the sewage outlet and does not enter the rainwater discharge system.

[0055] (2) Rainfall conditions: After the rainfall begins, rainwater enters the rainwater collection area from the rainwater inlet. The liquid level sensor and the water quality sensor quickly detect the inflow of rainwater and the fact that rainwater in the initial stage of rainfall usually has a relatively high pollutant content (i.e., when the water quality data in the rainwater collection area is greater than a preset threshold). The controller determines that the rainwater needs to be intercepted at this time based on the preset pollution judgment threshold, and thus controls the first interception valve between the rainwater collection area and the regulation buffer zone to remain closed or only open a small degree, so that the rainwater is temporarily stored in the rainwater collection area first. Part of the rainwater can slowly flow into the regulation buffer zone through the first electric butterfly valve that is opened slightly, and undergo preliminary sedimentation, purification and other treatments in the regulation buffer zone to prevent the heavily polluted rainwater in the initial stage from being directly discharged into the natural water body.

[0056] In the middle and late stages of rainfall, as rainfall continues, the scouring effect of rainwater on the ground surface gradually weakens, and the water quality of rainwater in the rainwater collection area improves. When the water quality sensor in the rainwater collection area detects that the pollutant content has dropped to the preset discharge standard, the opening of the second shut-off valve between the regulation buffer zone and the sewage collection area is adjusted to allow the rainwater in the regulation buffer zone to enter the sewage collection area. When the water quality data in the regulation buffer zone is less than the preset threshold, the second shut-off valve between the regulation buffer zone and the sewage collection area is closed. The controller gradually increases the opening of the first shut-off valve between the rainwater collection area and the regulation buffer zone based on comprehensive data such as real-time water level data, flow data, and water quality data, and adjusts the opening of the first electric butterfly valve and the flow control valve accordingly, so that the rainwater in the rainwater collection area enters the regulation buffer zone, and allows rainwater with better water quality and rainwater buffered by the regulation buffer zone to be discharged into the natural water body through the rainwater outlet, thereby achieving reasonable discharge of rainwater. At the same time, during the entire rainfall process, the controller will also adjust the opening of the first shut-off valve and the first electric butterfly valve between the rainwater collection area and the regulation buffer zone according to the water level conditions in each area to prevent abnormal conditions such as overflow in the sewage collection area due to the mixing of rainwater, thereby ensuring the normal transportation of sewage to the sewage network.

[0057] (3) Extreme rainfall conditions When encountering extreme rainfall weather and the rainfall far exceeds the normal level, the water level in each area rises rapidly, and the liquid level sensor transmits the over-water level signal to the controller. In addition to reasonably adjusting the opening of the first shut-off valve and the corresponding first electric butterfly valve, the control system will also control the flow regulating valve at the rainwater outlet to increase the opening, speed up the rainwater discharge rate, and open a specific emergency drainage channel in the adjustment buffer zone (by controlling the corresponding second electric butterfly valve to open) to assist drainage, avoid excessive water accumulation in the wellbore and cause flooding and other hazards to the surrounding environment, and ensure the safety and stability of the entire drainage system under extreme conditions.

[0058] Of course, during the rainfall process, there may be a situation where the water quality data in the rainwater collection area is always less than the preset threshold. At this time, close the second shut-off valve between the regulation buffer area and the sewage collection area, open the first shut-off valve between the rainwater collection area and the regulation buffer area, and open the flow regulating valve at the same time to allow rainwater to be discharged from the rainwater outlet.

[0059] Finally, it should be noted that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes and modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A rainwater and sewage interception well, characterized in that: It includes a well shaft and an inspection cover arranged at the top of the well shaft to close the top of the well shaft; two partitions are arranged horizontally in the well shaft, and the two partitions are arranged at intervals from top to bottom to divide the well shaft into a rainwater collection area, a regulating buffer area and a sewage collection area from top to bottom, and both partitions are provided with water inlets to connect the rainwater collection area, the regulating buffer area and the sewage collection area; at the same time, a shut-off valve is provided at the water inlet to adjust the opening of the water inlet; A rainwater inlet is provided on the side wall of the well corresponding to the rainwater collection area, which is used to connect to the rainwater inlet pipe; a rainwater outlet is provided on the side wall of the well corresponding to the adjustment buffer zone, which is used to connect to the rainwater outlet pipe, and a flow regulating valve is provided at the rainwater outlet; a sewage inlet is provided on the side wall of the well corresponding to the sewage collection area, which is used to connect to the sewage inlet pipe, and a check valve is provided at the sewage inlet; a sewage outlet is provided at the bottom of the well corresponding to the sewage collection area, which is used to connect to the sewage outlet pipe.

2. A rainwater and sewage interception well according to claim 1, characterized in that: A controller is provided in the rainwater collection area. The controller is located at the top of the wellbore and is connected with the shutoff valve and the flow regulating valve to control the opening of the shutoff valve and the flow regulating valve.

3. A rainwater and sewage interception well according to claim 2, characterized in that: Liquid level sensors and water quality sensors are provided in the rainwater collection area, regulation buffer area and sewage collection area. Flow sensors are provided at the rainwater inlet, rainwater outlet and sewage outlet. The controller is connected to all liquid level sensors, water quality sensors and flow sensors to facilitate controlling the opening of the shut-off valve and the flow regulating valve according to the acquired liquid level data, water quality data and flow data.

4. A rainwater and sewage interception well according to claim 2 or 3, characterized in that: The water inlet is arranged at the center of the partition, and the upper surface of the partition is inclined upward from the water inlet to the outer edge of the partition, and the inclination angle is 10-15°.

5. A rainwater and sewage interception well according to claim 4, characterized in that: A plurality of auxiliary water holes are evenly distributed on the baffle corresponding to the outer side of the water outlet, and a first electric butterfly valve is arranged at the auxiliary water hole. The controller is connected to the first electric butterfly valve to control the opening and closing of the first electric butterfly valve.

6. A rainwater and sewage interception well according to claim 3, characterized in that: An emergency water outlet is provided on the side wall of the wellbore corresponding to the regulating buffer zone, which is used to connect the emergency drainage pipe, and a second electric butterfly valve is provided at the emergency water outlet. The controller is connected to the second electric butterfly valve to control the opening and closing of the second electric butterfly valve.

7. A rainwater and sewage interception well according to claim 2, characterized in that: The shutoff valve comprises a gate corresponding to the size of the water outlet and a sealing rubber arranged on the edge of the gate. The gate is controlled by a driving mechanism to adjust the opening of the shutoff valve. The driving mechanism is connected to a controller.

8. The rainwater and sewage interception well according to claim 1, characterized in that: A grille is installed at the rainwater inlet to prevent debris in the rainwater from entering the wellbore.

9. The method for controlling rainwater and sewage diversion in a rainwater and sewage interception well according to claim 3, characterized in that: Carry out rainwater and sewage diversion control according to the following different working conditions: (1) Sunny day conditions: Both shut-off valves are closed, so that all sewage entering the sewage collection area flows into the sewage pipe network through the sewage outlet; (2) Under rainfall conditions: At the beginning of rainfall, when the water quality data of the rainwater collection area is less than the preset threshold, close the interception valve between the regulation buffer area and the sewage collection area, adjust the interception valve between the rainwater collection area and the regulation buffer area, and adjust the flow regulating valve at the same time, so that the rainwater is discharged from the rainwater outlet; In the middle and late stages of rainfall, gradually increase the opening of the flow regulating valve and the intercepting valve between the rainwater collection area and the regulating buffer zone to allow all rainwater to be discharged from the rainwater outlet; or At the beginning of rainfall, when the water quality data of the rainwater collection area is greater than the preset threshold, close the interception valve between the regulation buffer area and the sewage collection area, and adjust the opening of the interception valve between the rainwater collection area and the regulation buffer area, so that the rainwater in the rainwater collection area slowly enters the regulation buffer area and undergoes preliminary sedimentation in the regulation buffer area; After entering the middle and late stages of rainfall, when the water quality data in the rainwater collection area is less than the preset threshold, adjust the opening of the shut-off valve between the regulation buffer zone and the sewage collection area to allow the rainwater in the regulation buffer zone to enter the sewage collection area. When the water quality data in the regulation buffer zone is less than the preset threshold, close the shut-off valve between the regulation buffer zone and the sewage collection area, and at the same time increase the opening of the shut-off valve between the rainwater collection area and the regulation sewage collection area, and adjust the flow regulating valve to allow the rainwater to be discharged from the rainwater outlet.

10. A method for controlling rainwater and sewage diversion according to claim 9, characterized in that: An emergency water outlet is provided on the side wall of the wellbore corresponding to the adjustment buffer zone, which is used to connect the emergency drainage pipe, and a second electric butterfly valve is provided at the emergency water outlet. The controller is connected to the second electric butterfly valve to control the opening and closing of the second electric butterfly valve; when the rainfall exceeds the preset value, the second electric butterfly valve is opened to discharge part of the rainwater from the emergency water outlet.

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