Intercepting well capable of reducing overflow pollutants
By designing a flow interception well including water flow channels, sewage retention chambers and water barrier mechanisms, the problem that traditional flow interception wells cannot effectively intercept high-polluted domestic sewage is solved, and effective interception and treatment of high-polluted rainwater in the early stage is achieved, and environmental pollution and sewage treatment costs are reduced.
Patent Information
- Application Number
- CN202421288734.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-06
AI Technical Summary
Traditional interception wells cannot effectively intercept the high-polluted domestic sewage in the confluence pipe in the early stages of heavy rain, resulting in direct discharge of pollutants to natural water bodies, affecting the quality of the water environment.
A flow interceptor well is designed including a water flow channel, a sewage retention chamber and a water barrier mechanism. The water flow channel includes a well chamber, an overflow outlet channel and a sewage outlet channel; the sewage retention chamber is connected to the well chamber through the first and second channels; the water barrier mechanism isolates the well chamber and the sewage outlet channel when the water level rises, and high-polluted rainwater enters the sewage retention chamber through the first channel and reconnects when the water level drops.
Effectively intercept high-polluted rainwater in the early stages of heavy rain, reduce its entry into natural water bodies, reduce environmental pollution, and discharge low-polluted rainwater through overflow water channels in the later stages of rainfall, reduce the concentration of pollutants in the water inlet of sewage treatment plants, and reduce treatment costs.
Smart Images
Figure CN222614481U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of drainage technology, and in particular to an interception well for reducing overflow pollutants. Background Art
[0002] Interception wells play a vital role in the urban rainwater and sewage management system, especially in the rainwater and sewage diversion renovation project of old residential areas. Old residential areas generally have the problem of rainwater and sewage mixing, but during the renovation process, due to objective problems such as narrow alleys and unclear drainage directions of old pipes, it is difficult to achieve rainwater and sewage diversion in some areas, and interception wells need to be set up in appropriate locations. The main function of the interception well is to intercept sewage and overflow rainwater.
[0003] However, traditional interception wells have some significant defects in practical applications. First, at the beginning of a rainstorm, a large amount of domestic sewage in the combined pipe will quickly enter the rainwater system through the interception well, causing pollutants to be directly discharged into natural water bodies, affecting the quality of the water environment.
[0004] Therefore, it is necessary to propose an interception well that reduces overflow pollutants to solve the problems of traditional interception wells. During rainfall, rainwater containing high concentrations of pollutants in the early stage can be intercepted to reduce its entry into natural water bodies, thereby reducing environmental pollution, reducing the concentration of pollutants in the sewage treatment plant inlet, and reducing the operating costs of the sewage treatment plant. Utility Model Content
[0005] The purpose of this application is to overcome the deficiencies in the prior art and to propose an interception well that reduces overflow pollutants, thereby solving the problem of a large amount of domestic sewage in the combined pipe entering the rainwater system at the beginning of a rainstorm.
[0006] This application is implemented through the following technical solutions:
[0007] The present application proposes an interception well for reducing overflow pollutants, comprising:
[0008] A water flow channel, comprising a well chamber, an overflow water outlet channel and a sewage water outlet channel connected to the well chamber;
[0009] A sewage retention chamber is provided with a first channel and a second channel connected to the well chamber, the overflow outlet channel is located above the first channel, the first channel is located above the second channel, and the second channel is located above the sewage outlet channel;
[0010] A water retaining mechanism is arranged in the well chamber;
[0011] When the water level in the well chamber rises, the water retaining mechanism isolates the well chamber from the second channel and the sewage outlet channel, so that rainwater with high pollution concentration in the well chamber flows into the sewage retention chamber through the first channel;
[0012] When the sewage retention chamber is filled with rainwater, the water level in the well chamber rises to the height of the overflow water outlet channel, and the rainwater with low pollution concentration in the well chamber flows to the overflow water outlet channel;
[0013] When the water level in the well chamber drops, the water retaining mechanism connects the well chamber with the second channel and the sewage outlet channel, and the rainwater in the sewage retention chamber flows to the well chamber through the second channel, while the rainwater in the well chamber flows to the sewage outlet channel.
[0014] In one embodiment of the present application, the water retaining mechanism comprises:
[0015] A float ball is arranged in the well chamber;
[0016] The transmission structure comprises a transmission rod, a shielding member and a fixing rod, one end of the transmission rod is rotatably connected to the shielding member, and the other end is fixedly connected to the floating ball, one end of the fixing rod is arranged at the well wall in the well chamber, and the other end is rotatably connected to the transmission rod, and the shielding member is attached to the well wall in the well chamber and shields the second channel;
[0017] The connection point between the fixed rod and the transmission rod is defined as a connection point. When the water level in the well chamber rises and contacts the float, the float floats up, and the transmission rod rotates along the connection point to drive the shielding member to move downward and shield the sewage outlet channel.
[0018] In one embodiment of the present application, the shielding member is provided with a drainage hole. When the water level in the well chamber drops, the float falls, and the transmission rod rotates in the opposite direction along the connection point to drive the shielding member to move upward, and the well chamber and the sewage retention chamber are connected through the drainage hole. At the same time, the shielding member is away from the sewage outlet channel to connect the well chamber with the sewage outlet channel.
[0019] In one embodiment of the present application, when the water level in the well chamber rises, the float floats up, and the transmission rod rotates along the connection point to drive the shielding member to move downward and shield the sewage retention chamber and the sewage outlet channel. At the same time, the drainage hole is arranged on the well wall in the well chamber and is located between the second channel and the sewage outlet channel.
[0020] In one embodiment of the present application, the shielding member includes:
[0021] A baffle plate is attached to the well wall in the well chamber, and the baffle plate is provided with a drainage hole;
[0022] A connecting rod has one end rotatably connected to the transmission rod and the other end fixedly connected to the baffle, and the extending direction of the connecting rod is the same as the extending direction of the baffle.
[0023] In one embodiment of the present application, the baffle is provided with a guide rail, the well wall in the well chamber is provided with a guide groove, and the guide groove is located between the second channel and the sewage outlet channel, and the guide rail is slidably connected to the guide groove.
[0024] In one embodiment of the present application, the float, the transmission rod, the connecting rod and the baffle are all made of bottom weight material.
[0025] In one embodiment of the present application, the water flow channel further includes a combined water inlet channel, which is connected to the well chamber, and external rainwater flows into the well chamber through the combined water inlet channel.
[0026] In one embodiment of the present application, the combined water inlet channel is located between the first channel and the second channel.
[0027] In one embodiment of the present application, the well chamber is provided with a wellhead and a well cover, the wellhead is located above the overflow water outlet channel, and the well cover can be covered on the wellhead.
[0028] Compared with the prior art, the beneficial effects of this application are:
[0029] The water flow channel includes a well chamber, an overflow outlet channel and a sewage outlet channel connected to the well chamber; the sewage retention chamber is provided with a first channel and a second channel connected to the well chamber, the overflow outlet channel is located above the first channel, the first channel is located above the second channel, and the second channel is located above the sewage outlet channel; the water retaining mechanism is arranged in the well chamber. When the water level rises, the water retaining mechanism isolates the well chamber from the second channel and the sewage outlet channel. At the beginning of a rainstorm, rainwater with a high pollution concentration enters the sewage retention chamber through the first channel. When the sewage retention chamber is filled with rainwater, the water level in the well chamber rises to the height of the overflow outlet channel, and rainwater with a low pollution concentration is discharged through the overflow outlet channel. When the water level in the well chamber drops, the water retaining mechanism reconnects the well chamber with the second channel and the sewage outlet channel, so that the rainwater in the sewage retention chamber flows into the well chamber through the second channel, and then the rainwater in the well chamber flows to the sewage outlet channel. Effective interception and treatment of rainwater with a high pollution concentration in the initial stage is achieved, reducing its entry into natural water bodies, thereby reducing environmental pollution. In the middle and late stages of rainfall, rainwater with low pollution concentration can be discharged smoothly through the sewage outlet channel, reducing the pollutant concentration of the sewage treatment plant's influent, reducing treatment costs and improving treatment efficiency.
[0030] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0032] Figure 1 A schematic diagram of an interception well for reducing overflow pollutants provided in one embodiment of the present application.
[0033] Description of reference numerals:
[0034] 10. Intercepting well for reducing overflow pollutants; 110. Well chamber; 111. Well cover; 120. Overflow outlet channel; 130. Sewage outlet channel; 140. Combined inlet channel; 200. Sewage retention chamber; 210. First channel; 220. Second channel; 300. Water retaining mechanism; 310. Float; 320. Transmission rod; 331. Baffle; 3311. Drain hole; 332. Connecting rod; 340. Fixing rod. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0036] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.
[0037] It should be noted that when an element is referred to as being "fixed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.
[0038] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.
[0040] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.
[0041] Please refer to Figure 1The present application proposes an interception well 10 for reducing overflow pollutants, including a water flow channel (not marked in the figure), a sewage retention chamber 200 and a water retaining mechanism 300, the water flow channel includes a well chamber 110, an overflow outlet channel 120 and a sewage outlet channel 130 connected to the well chamber 110; the sewage retention chamber 200 is provided with a first channel 210 and a second channel 220 connected to the well chamber 110, the overflow outlet channel 120 is located above the first channel 210, the first channel 210 is located above the second channel 220, and the second channel 220 is located above the sewage outlet channel 130; the water retaining mechanism 300 is arranged in the well chamber 110; when the water level in the well chamber 110 rises, the water retaining mechanism 300 isolates the well chamber 110 from the second channel 220 and the sewage outlet channel 130 so that rainwater with high pollution concentration in the well chamber 110 flows into the sewage retention chamber 200 through the first channel 210; when the sewage retention chamber 200 is filled with rainwater, the water level in the well chamber 110 rises to the height of the overflow outlet channel 120, and rainwater with low pollution concentration in the well chamber 110 flows to the overflow outlet channel 120; when the water level in the well chamber 110 drops, the water retaining mechanism 300 connects the well chamber 110 with the second channel 220 and the sewage outlet channel 130, and the rainwater in the sewage retention chamber 200 flows to the well chamber 110 through the second channel 220, and at the same time, the rainwater in the well chamber 110 flows to the sewage outlet channel 130.
[0042] Specifically, the water flow channel includes a well chamber 110, an overflow outlet channel 120 and a sewage outlet channel 130. The well chamber 110 is the main place for collecting and treating rainwater and sewage, and is connected to the overflow outlet channel 120 and the sewage outlet channel 130. The overflow outlet channel 120 is used to discharge rainwater with low pollution concentration during heavy rain, and the sewage outlet channel 130 is used to discharge rainwater with high pollution concentration at the beginning and end of heavy rain. A first channel 210 and a second channel 220 are provided in the sewage retention chamber 200, and the first channel 210 is located above the second channel 220. The water retaining mechanism 300 is located in the well chamber 110, and is used to isolate the well chamber 110 from the second channel 220 and the sewage outlet channel 130 when the water level rises. In this way, at the beginning of heavy rain, rainwater with high pollution concentration enters the sewage retention chamber 200 through the first channel 210. In the middle and late stages of rainfall, that is, when the sewage retention chamber 200 is filled with rainwater, the water level in the well chamber 110 rises to the height of the overflow outlet channel 120, and rainwater with low pollution concentration is discharged through the overflow outlet channel 120. In the late stages of rainfall, that is, when the water level in the well chamber 110 drops, the water retaining mechanism 300 reconnects the well chamber 110 with the second channel 220 and the sewage outlet channel 130, so that the rainwater in the sewage retention chamber 200 flows into the well chamber 110 through the second channel 220, and then the rainwater in the well chamber 110 flows to the sewage outlet channel 130.
[0043] It achieves effective interception and treatment of rainwater with high pollution concentration in the early stage, reduces its entry into natural water bodies, and thus reduces environmental pollution. The design of the water retaining mechanism 300 can intercept rainwater with high pollution concentration in the early stage of heavy rain, and rainwater with low pollution concentration can be discharged smoothly in the middle and late stages of rainfall. In addition, this solution can reduce the concentration of pollutants in the influent of sewage treatment plants, reduce treatment costs, and improve treatment efficiency. Especially in the renovation process of old residential areas, this design can adapt to the problems of narrow alleys and complex pipeline directions, ensuring the smooth progress of rainwater and sewage diversion renovation.
[0044] It is worth noting that the problem of rainwater and sewage mixing is common in old residential areas in China. However, due to objective problems such as many illegal buildings, narrow lanes, and unclear drainage directions of old pipes during the renovation process, it is difficult to separate rainwater and sewage in some areas. The interception well 10 for reducing overflow pollutants in the present application can be set at a suitable location to greatly alleviate the problem of rainwater and sewage mixing.
[0045] In one embodiment, the water retaining mechanism 300 includes a float 310 and a transmission structure (not marked in the figure), the float 310 is arranged in the well chamber 110; the transmission structure includes a transmission rod 320, a shielding member (not marked in the figure) and a fixed rod 340, one end of the transmission rod 320 is rotatably connected to the shielding member, and the other end is fixedly connected to the float 310, one end of the fixed rod 340 is arranged at the well wall in the well chamber 110, and the other end is rotatably connected to the transmission rod 320, the shielding member fits the well wall in the well chamber 110 and blocks the second channel 220; the connection point between the fixed rod 340 and the transmission rod 320 is defined as the connection point, when the water level in the well chamber 110 rises and contacts the float 310, the float 310 floats, and the transmission rod 320 rotates along the connection point to drive the shielding member to move downward and block the sewage outlet channel 130.
[0046] Specifically, the float 310 is arranged in the well chamber 110. When the water level in the well chamber 110 rises and contacts the float 310, the float 310 will float up as the water level rises. The transmission structure includes a transmission rod 320, a shielding member and a fixed rod 340. One end of the transmission rod 320 is rotatably connected to the shielding member, and the other end is fixedly connected to the float 310. One end of the fixed rod 340 is arranged at the well wall in the well chamber 110, and the other end is rotatably connected to the transmission rod 320. The transmission rod 320 is connected to the fixed rod 340 through a connection point to form a rotating mechanism. The shielding member fits the well wall in the well chamber 110. When the float 310 rises, the transmission rod 320 rotates along the connection point, driving the shielding member to move downward, thereby shielding the second channel 220 and the sewage outlet channel 130, allowing rainwater with a high pollution concentration to enter the first channel 210. Through the coordinated action of the float 310 and the transmission structure, the function of automatically shielding the second channel 220 and the sewage outlet channel 130 when the water level rises is realized. The float 310 floats up as the water level rises, driving the transmission rod 320 to rotate, and the shielding member moves downward and shields the second channel 220 and the sewage outlet channel 130. This design ensures that rainwater with high pollution concentration in the early stage will not be directly discharged into the sewage system, but enter the sewage retention chamber 200 through the first channel 210, thereby reducing the load on the sewage treatment plant and the treatment cost.
[0047] In one embodiment, the shielding member is provided with a drainage hole 3311. When the water level in the well chamber 110 drops, the float 310 falls, and the transmission rod 320 rotates in the opposite direction along the connection point to drive the shielding member to move upward, and the well chamber 110 is connected with the sewage retention chamber 200 through the drainage hole 3311. At the same time, the shielding member is away from the sewage outlet channel 130 to connect the well chamber 110 with the sewage outlet channel 130.
[0048] Specifically, when the water level in the well chamber 110 drops, the float 310 falls, and the transmission rod 320 rotates in the opposite direction along the connection point, driving the shielding member to move upward. At this time, the water leakage hole 3311 of the shielding member allows the well chamber 110 to communicate with the sewage retention chamber 200, and the shielding member is away from the sewage outlet channel 130, so that the water in the well chamber 110 can be discharged through the sewage outlet channel 130. In this way, the water retained in the sewage retention chamber 200 can be smoothly discharged into the well chamber 110, and finally discharged through the sewage outlet channel 130.
[0049] In one embodiment, when the water level in the well chamber 110 rises, the float 310 floats up and the transmission rod 320 rotates along the connection point to drive the shielding member to move downward and shield the sewage retention chamber 200 and the sewage outlet channel 130. At the same time, the drainage hole 3311 is arranged on the well wall in the well chamber 110 and is located between the second channel 220 and the sewage outlet channel 130.
[0050] Specifically, when the water level in the well chamber 110 rises, the float 310 floats up, and the transmission rod 320 rotates along the connection point of the fixed rod 340, driving the shielding member to move downward, so that the shielding member blocks the sewage outlet channel 130. This action ensures that the rainwater containing a high pollution concentration in the initial stage will not be directly discharged through the sewage outlet channel 130. In addition, the drainage hole 3311 at this time is located at the well wall in the well chamber 110, specifically between the second channel 220 and the sewage outlet channel 130, which prevents the well chamber 110 from being connected to the sewage retention chamber 200 through the drainage hole 3311. In other words, the shielding member moves downward and blocks the sewage retention chamber 200 and the sewage outlet channel 130 at the same time.
[0051] In one embodiment, the shielding member includes a baffle 331 and a connecting rod 332. The baffle 331 is in contact with the well wall in the well chamber 110, and a drainage hole 3311 is provided on the baffle 331. One end of the connecting rod 332 is rotatably connected to the transmission rod 320, and the other end is fixedly connected to the baffle 331. The extension direction of the connecting rod 332 is the same as the extension direction of the baffle 331.
[0052] Specifically, the baffle 331 is attached to the well wall in the well chamber 110, used to effectively block the sewage outlet channel 130, and is provided with a drainage hole 3311. When the water level rises, the baffle 331 moves downward to block the sewage outlet channel 130, and the location design of the drainage hole 3311 ensures that it is not connected to the sewage retention chamber 200 in this state, so as to prevent high pollution concentration rainwater from being directly discharged from the second channel 220. When the water level drops, the baffle 331 rises, and the drainage hole 3311 connects the well chamber 110 with the sewage retention chamber 200, and at the same time, the well chamber 110 is connected with the sewage outlet channel 130, so as to achieve effective sewage discharge.
[0053] In one embodiment, the baffle 331 is provided with a guide rail (not marked in the figure), the well wall in the well chamber 110 is provided with a guide groove (not marked in the figure), and the guide groove is located between the second channel 220 and the sewage outlet channel 130, and the guide rail is slidably connected to the guide groove.
[0054] Specifically, through the cooperation between the guide rail and the guide groove, the movement of the baffle 331 driven by the transmission rod 320 is more stable and precise. The existence of the guide groove allows the baffle 331 to always remain in the predetermined track when moving up and down, avoiding functional failure caused by shaking or deviation, and ensuring the reliability of the interception function.
[0055] In one embodiment, the floating ball 310 , the transmission rod 320 , the connecting rod 332 , and the baffle 331 are all made of a low-weight material.
[0056] Specifically, in order to ensure that the floating ball 310 can pull the transmission rod 320, the connecting rod 332 and the baffle 331 after floating, these components are made of low-weight materials. Common low-weight materials include high-strength plastics, lightweight alloys, etc. These materials are not only light in weight, but also have sufficient strength and durability to withstand the wear and pressure of long-term use.
[0057] In one embodiment, the water flow channel further includes a combined water inlet channel 140 , which is connected to the well chamber 110 , and external rainwater flows into the well chamber 110 through the combined water inlet channel 140 .
[0058] Specifically, the combined water inlet channel 140 is a channel for introducing external rainwater into the well chamber 110. The rainwater and sewage diversion of the old community are collected in the combined water inlet channel 140, and the combined water inlet channel 140 is connected to the well chamber 110 to ensure that the external rainwater can be quickly collected in the well chamber 110.
[0059] In one embodiment, the combined inlet channel 140 is located between the first channel 210 and the second channel 220 .
[0060] Specifically, by setting the combined water inlet channel 140 between the first channel 210 and the second channel 220, efficient diversion of rainwater can be effectively achieved. Rainwater with high pollution concentration in the initial stage enters the sewage retention chamber 200 through the first channel 210, and rainwater with lower pollution concentration is discharged through the overflow outlet channel 120 in the middle and late stages of rainfall. In the late stage of rainfall, the well chamber 110 is connected to the sewage retention chamber 200 through the drainage hole 3311, and the sewage in the well chamber 110 and the retention chamber is discharged into the sewage system through the sewage outlet channel 130, ensuring the diversion and treatment of rainwater at different stages. The sewage outlet channel 130 is connected to the external sewage treatment equipment.
[0061] In one embodiment, the well chamber 110 is provided with a wellhead (not marked in the figure) and a well cover 111 . The wellhead is located above the overflow water outlet channel 120 , and the well cover 111 can be covered on the wellhead.
[0062] Specifically, a wellhead is provided on the top of the well chamber 110, and the wellhead is located above the overflow water channel 120 to facilitate the entry and discharge of rainwater and sewage. The well cover 111 is used to cover the wellhead, and has a protection and protection function to prevent debris from entering the well chamber 110, while ensuring the safe operation of the system.
[0063] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An interception well for reducing overflow pollutants, characterized in that: include: A water flow channel, comprising a well chamber, an overflow water outlet channel and a sewage water outlet channel connected to the well chamber; A sewage retention chamber is provided with a first channel and a second channel connected to the well chamber, the overflow outlet channel is located above the first channel, the first channel is located above the second channel, and the second channel is located above the sewage outlet channel; A water retaining mechanism is arranged in the well chamber; When the water level in the well chamber rises, the water retaining mechanism isolates the well chamber from the second channel and the sewage outlet channel, so that rainwater with high pollution concentration in the well chamber flows into the sewage retention chamber through the first channel; When the sewage retention chamber is filled with rainwater, the water level in the well chamber rises to the height of the overflow water outlet channel, and the rainwater with low pollution concentration in the well chamber flows to the overflow water outlet channel; When the water level in the well chamber drops, the water retaining mechanism connects the well chamber with the second channel and the sewage outlet channel, and the rainwater in the sewage retention chamber flows to the well chamber through the second channel, while the rainwater in the well chamber flows to the sewage outlet channel.
2. The interception well for reducing overflow pollutants according to claim 1, characterized in that: The water retaining mechanism comprises: A float ball is arranged in the well chamber; The transmission structure comprises a transmission rod, a shielding member and a fixing rod, one end of the transmission rod is rotatably connected to the shielding member, and the other end is fixedly connected to the floating ball, one end of the fixing rod is arranged at the well wall in the well chamber, and the other end is rotatably connected to the transmission rod, and the shielding member is attached to the well wall in the well chamber and shields the second channel; The connection point between the fixed rod and the transmission rod is defined as a connection point. When the water level in the well chamber rises and contacts the float, the float floats up, and the transmission rod rotates along the connection point to drive the shielding member to move downward and shield the sewage outlet channel.
3. The interception well for reducing overflow pollutants according to claim 2, characterized in that: The shielding member is provided with a drainage hole. When the water level in the well chamber drops, the float falls, and the transmission rod rotates in the opposite direction along the connection point to drive the shielding member to move upward, and the well chamber and the sewage retention chamber are connected through the drainage hole. At the same time, the shielding member is away from the sewage outlet channel to connect the well chamber with the sewage outlet channel.
4. The interception well for reducing overflow pollutants according to claim 3, characterized in that: When the water level in the well chamber rises, the float floats up, and the transmission rod rotates along the connection point to drive the shielding member to move downward and shield the sewage retention chamber and the sewage outlet channel. At the same time, the drainage hole is arranged on the well wall in the well chamber and is located between the second channel and the sewage outlet channel.
5. The interception well for reducing overflow pollutants according to claim 4, characterized in that: The shielding member comprises: A baffle plate is attached to the well wall in the well chamber, and the baffle plate is provided with a drainage hole; A connecting rod has one end rotatably connected to the transmission rod and the other end fixedly connected to the baffle, and the extending direction of the connecting rod is the same as the extending direction of the baffle.
6. The interception well for reducing overflow pollutants according to claim 5, characterized in that: The baffle is provided with a guide rail, the well wall in the well chamber is provided with a guide groove, and the guide groove is located between the second channel and the sewage outlet channel, and the guide rail is slidably connected to the guide groove.
7. The interception well for reducing overflow pollutants according to claim 5, characterized in that: The float, the transmission rod, the connecting rod and the baffle are all made of bottom weight material.
8. The interception well for reducing overflow pollutants according to claim 1, characterized in that: The water flow channel also includes a combined water inlet channel, which is connected to the well chamber, and external rainwater flows into the well chamber through the combined water inlet channel.
9. The interception well for reducing overflow pollutants according to claim 8, characterized in that: The combined water inlet channel is located between the first channel and the second channel.
10. The interception well for reducing overflow pollutants according to claim 1, characterized in that: The well chamber is provided with a wellhead and a well cover, wherein the wellhead is located above the overflow water outlet channel, and the well cover can be arranged on the wellhead.