Air pressure control assembly, shutoff device and drainage system

Abstract

The application discloses a kind of air pressure control assembly, intercepting equipment and drainage system, the control assembly includes: sealed cavity, shunt on rainwater vertical pipe and air pipe;When the rainwater that flows through the inlet end of rainwater vertical pipe, flow into sealed cavity, and extrude the air in sealed cavity into pressure accumulation cavity, flexible intercepting device starts to compress deformation under the action of air pressure, so that flexible intercepting device gradually closes;When the rainwater in sealed cavity is discharged through drain port, flexible intercepting device starts to expand and restore under the action of its own elastic force, so that flexible intercepting device gradually opens.The water column pressure formed by the rainwater in the rainwater vertical pipe outside building is used to realize the opening or closing of flexible intercepting device, without additional configuration of gas station / power station to provide driving force, which reduces the safety risk, saves the land area required by additional control equipment, and has the characteristics of wide adaptability.

Description

Technical Field

[0001] This invention belongs to the field of municipal drainage technology, and specifically relates to a pneumatic control component, interception device and drainage system. Background Technology

[0002] Existing equipment used to control flow control devices, such as float valves which use the buoyancy of water for opening and closing control, and open weir gates and rotary gates which use hydraulic or electric systems for opening and closing control, all have the following problems: the components used for flow control are easily entangled by debris in the water environment, which can cause jamming and prevent normal opening and closing.

[0003] Flexible flow interception devices, as a type of flow interception equipment, have a simple structure and can achieve flow interception when their accumulator chamber is closed. Typically, the surface of the accumulator chamber is smooth or can be directly fitted into the pipe being intercepted, thus preventing it from being entangled in debris in the water and causing blockages during the switching of accumulator chamber states. Flexible flow interception devices are pneumatically driven, which is safer than electric drive and more environmentally friendly than hydraulic drive. Due to these advantages, flexible flow interception devices are widely used, especially in urban sewage and wastewater separation systems.

[0004] Reducing equipment costs, minimizing equipment footprint, and providing more environmentally friendly solutions for separating clean and wastewater are directions that the drainage industry has been exploring. Summary of the Invention

[0005] The technical problem to be solved by the present invention is how to provide a new pneumatic control component based on the existing flexible flow control device, so as to replace the technical defects of high control cost and large equipment footprint of traditional pneumatic / electric / hydraulic drive control equipment.

[0006] To address the aforementioned technical problems, in a first aspect, the present invention provides a pneumatic control component for controlling the opening and closing of a flexible interception device. The flexible interception device has a pressure storage chamber, and a rainwater downpipe is installed outside the building adjacent to the flexible interception device. The pneumatic control component includes: a sealed cavity with a vent and a drain outlet; the outlet end of the rainwater downpipe passes through the sealed cavity and is located at the bottom of the sealed cavity; and a diverter installed on the rainwater downpipe, the diverter having an inlet, a first outlet, and a second outlet. The inlet is connected to the inlet end of the rainwater downpipe, and the first outlet is connected to the outlet end of the rainwater downpipe. The outlet is connected; the air pipe is connected to the air vent and the pressure storage chamber respectively; when rainwater flows into the rainwater downpipe through the inlet, it flows into the sealed chamber through the inlet of the diverter, the first outlet, and the outlet of the rainwater downpipe in sequence, and squeezes the air in the sealed chamber through the air vent and the air pipe into the pressure storage chamber. The flexible intercepting device begins to compress and deform under the action of air pressure, causing the flexible intercepting device to gradually close; when the rainwater in the sealed chamber is discharged through the drain, the flexible intercepting device begins to expand and recover under its own elasticity, causing the flexible intercepting device to gradually open.

[0007] Optionally, the air pipe has a bend height, which is equal to or greater than the height of the second water outlet.

[0008] Optionally, a drain valve is provided on the drain outlet. The drain valve is a manual valve with an opening degree set according to the time T1 required for the flexible interceptor to open and / or the time required for it to close.

[0009] Optionally, a drain valve is provided on the drain outlet. The drain valve is a solenoid valve. The opening time T3 of the solenoid valve is set according to the opening time T1 of the flexible flow-blocking device, and / or the closing time T4 of the solenoid valve is set according to the closing time T2 of the flexible flow-blocking device. The control component also includes a controller, which controls the opening and / or closing of the solenoid valve according to T3 and / or T4.

[0010] Optionally, the solenoid valve is powered by a battery or solar energy.

[0011] Optionally, the diverter is a tee pipe.

[0012] Secondly, the present invention also provides a pneumatic control component for controlling the opening and closing of a flexible interception device. The flexible interception device has a pressure storage chamber, and a rainwater downpipe is installed outside the building adjacent to the flexible interception device. The pneumatic control component includes: a sealing chamber with a vent and a drain outlet, a drain valve on the drain outlet, and a diverter installed on the rainwater downpipe. The diverter has an inlet, a first outlet, and a second outlet. The inlet is connected to the inlet end of the rainwater downpipe, and the first outlet is connected to the outlet end of the rainwater downpipe.

[0013] A guide pipe, one end of which is connected to the second outlet, and the other end passes through the sealing cavity and rests at the bottom of the sealing cavity; an air pipe, which is connected to the vent and the pressure storage cavity respectively; when rainwater flows into the rainwater riser through the inlet end of the rainwater riser, it flows into the sealing cavity through the second outlet of the diverter and the guide pipe in sequence, and squeezes the air in the sealing cavity through the vent and the air pipe in sequence into the pressure storage cavity. The flexible intercepting device begins to compress and deform under the action of air pressure, causing the flexible intercepting device to gradually close; when the rainwater in the sealing cavity is discharged through the drain outlet, the flexible intercepting device begins to expand and recover under its own elastic force, causing the flexible intercepting device to gradually open.

[0014] Optionally, the diversion component includes: a buffer box, on which the inlet, the first outlet, and the second outlet are correspondingly located; the outlet of the rainwater downpipe connected to the first outlet passes through the first outlet and is located inside the buffer box, forming a buffer zone with the side wall of the buffer box; and a partition, one side of which is fixed inside the buffer box, and the other side of which forms a flow area with the side wall of the buffer box, for rainwater to flow sequentially into the inlet through the inlet end of the rainwater downpipe and into the buffer zone through the flow area; wherein the opening height of the second outlet on the buffer box is lower than the height at which the outlet of the rainwater downpipe passes through the first outlet and is located in the buffer box.

[0015] Optionally, the air pipe has a bending height, which is greater than or equal to the height of the rainwater downpipe after it enters the first outlet within the buffer box.

[0016] Optionally, a drain valve is provided on the drain outlet. The drain valve is a manual valve with an opening degree set according to the required opening time T1 and / or closing time of the flexible flow-blocking device; and / or, a drain valve is provided on the drain outlet. The drain valve is a solenoid valve, and the opening time T3 of the solenoid valve is set according to the opening time T1 of the flexible flow-blocking device, and the closing time T4 of the solenoid valve is set according to the closing time T2 of the flexible flow-blocking device; the control component further includes a controller, which controls the opening and / or closing of the solenoid valve according to T3 and / or T4.

[0017] Thirdly, the present invention also provides a flow-blocking device, comprising: the aforementioned air pressure control component, wherein the flow-blocking device controls the opening and closing of a flexible flow-blocking device through the air pressure control component.

[0018] Fourthly, the present invention also provides a drainage system, comprising: a well body; a rainwater downpipe disposed on the outer wall of a building adjacent to the well body; a flexible intercepting device disposed in the well body and connected to the rainwater downpipe; and a pneumatic control component as described in any one of the above claims, connected to the flexible intercepting device, for controlling the opening and closing of the flexible intercepting device.

[0019] Beneficial effects:

[0020] The pneumatic control component provided by this invention features a sealed cavity with an air vent and a drain outlet. The air vent is connected to a pressure storage chamber via an air pipe. The outlet of the rainwater downpipe passes through the sealed cavity and is located at its bottom. When the flexible interception device is closed, rainwater flowing into the downpipe through its inlet passes through the inlet of the diverter, the first outlet, and the outlet of the downpipe before flowing into the sealed cavity. This forces air within the sealed cavity to flow into the pressure storage chamber via the air vent and the air pipe. As the water volume in the sealed cavity increases, the air pressure gradually increases. Under this pressure, the flexible interception device begins to compress and deform, gradually closing. When the flexible interception device is open... When activated, rainwater in the sealed cavity is discharged through the drain outlet, which gradually increases the gas holding space within the sealed cavity. Gas in the pressure storage chamber flows back into the sealed cavity, and the gas pressure formed in the sealed cavity gradually decreases. The flexible interception device begins to expand and recover under its own elastic force, thus gradually opening the flexible interception device. The opening or closing of the flexible interception device is controlled by the gas pressure formed after rainwater from the rainwater downpipe outside the building flows into the sealed cavity. No additional gas station / power station is required to provide driving force, reducing safety risks and saving the floor space required for additional control equipment. The new air pressure control component provided by this invention has the technical advantages of low cost and small footprint.

[0021] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 The overall structural frame of the air pressure control component provided in the embodiment of the present invention when used in a drainage system. Figure 1 ;

[0024] Figure 2 The overall structural frame of the air pressure control component provided in the embodiment of the present invention when used in a drainage system. Figure 2 .

[0025] Figure label:

[0026] Flexible interception device-1, pressure storage chamber-11, sealing chamber-12, vent-121, drain outlet-122, drain valve-123;

[0027] Rainwater downpipe-2, inlet-21, outlet-22;

[0028] Diverter-3, Inlet-31, First Outlet-32, Second Outlet-33, Buffer Box-34, Baffle-35;

[0029] Trachea-4;

[0030] Well body-5;

[0031] Building - 6. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art are within the scope of protection of the present invention. The keyword "and / or" involved in this embodiment indicates two situations: and or. In other words, A and / or B mentioned in the embodiments of the present invention indicates two situations: A and B, or A or B. It describes three states of A and B. For example, A and / or B means: only A is included but not B; only B is included but not A; and A and B are included.

[0033] Furthermore, in this embodiment of the invention, when a component is considered to be "connected to" or "connected to" another component, it can be directly connected to the other component or may have an intervening component present. When a component is considered to be "set on" another component, it can be directly set on the other component or may have an intervening component present.

[0034] It should be noted that, in order to provide a more detailed description of the present invention so that those skilled in the art can more clearly and understand the invention, and thus support the technical problems to be solved by the invention and the corresponding technical effects that can be achieved, the following explanations are made regarding the terms, nouns, and applicable scenarios involved in the invention before its introduction:

[0035] A rainwater downpipe is a pipe installed on the outside of a building to transport rainwater, sewage, or a mixture of rainwater and sewage.

[0036] Example 1

[0037] Please refer to the following for details. Figure 1 This is an overall structural block diagram of the air pressure control component provided in the embodiment of the present invention when used in a drainage system. The drainage system includes a well body 5, a rainwater riser 2, a flexible interception device 1, and the air pressure control component provided in the embodiment of the present invention.

[0038] The air pressure control component is used to control the opening and closing of the flexible interception device 1. The flexible interception device 1 has a pressure storage chamber 11 with adjustable volume. A rainwater downpipe 2 is installed outside the building 6 adjacent to the flexible interception device 1. The control component specifically includes: a sealing chamber 12, an air pipe 4, and a diverter 3. The sealing chamber 12 has an air vent 121 and a drain vent 122. The outlet end 22 of the rainwater downpipe 2 passes through the sealing chamber 12 and is located at the bottom of the sealing chamber 12. The diverter 3 installed on the rainwater downpipe 2 has an inlet 31, a first outlet 32, and a second outlet 33. The inlet 31 is connected to the inlet end 21 of the rainwater downpipe 2, and the first outlet 32 ​​is connected to the outlet end 22 of the rainwater downpipe 2. The air pipe 4 is connected to the air vent 121 and the pressure storage chamber 11 respectively.

[0039] Specifically, in this embodiment, a sealed cavity 12 is provided, with a vent 121 and a drain 122. The vent 121 is connected to the pressure storage cavity 11 via an air pipe 4. The outlet 22 of the rainwater downpipe 2 passes through the sealed cavity 12 and is located at the bottom of the sealed cavity 12. When the flexible interception device 1 is closed, rainwater flowing into the rainwater downpipe 2 through the inlet 21 of the rainwater downpipe 2 flows into the sealed cavity 12 sequentially through the inlet 31 of the diverter 3, the first outlet 32, and the outlet 22 of the rainwater downpipe 2. This compresses the air inside the sealed cavity 12, which then flows into the pressure storage cavity 11 sequentially through the vent 121 and the air pipe 4. As the water volume in the sealed cavity increases, the air pressure gradually increases. Under this air pressure, the flexible interception device 1 begins to be compressed and deformed, thereby achieving the gradual compression and deformation of the flexible interception device 1. Gradually closing; when the flexible interception device 1 is opened, the rainwater in the sealed cavity 12 is discharged through the drain outlet 122, which gradually increases the gas holding space in the sealed cavity 12. The gas in the pressure storage cavity 11 flows back into the sealed cavity 12, and then the gas pressure formed in the sealed cavity 12 gradually decreases. Under its own elastic force, the flexible interception device 1 begins to expand and recover, thus realizing the gradual opening of the flexible interception device 1. In this way, the opening or closing of the flexible interception device 1 is controlled by the gas pressure formed after the rainwater in the rainwater riser 2 outside the building 6 flows into the sealed cavity 12. There is no need to configure an additional gas station / power station to provide driving force, which reduces safety risks and saves the floor space required for additional control equipment. The new air pressure control component provided by the present invention has the technical effects of low cost and small floor space.

[0040] It should be noted that the above-mentioned flexible interception device 1 is a device with elastic deformation, such as a flexible rubber sleeve. The pressure accumulator 11 can be a water storage space with a space to accommodate rainwater formed by the outer side wall of the flexible rubber sleeve and the inner side wall of a certain outer shell, or it can be directly made by integrally molding a flexible rubber sleeve with a double-layer structure. This embodiment does not limit this. Any flexible interception device 1 that can meet the requirement of having elastic deformation function is applicable to the present invention.

[0041] In some possible implementations, the air pipe 3 has a bend height that is equal to or greater than the height of the second outlet 33. For example... Figure 1 The end of the air pipe 3 connected to the air vent 121 of the sealed cavity 12 is bent in an inverted "U" shape, and the bending height of the inverted "U" shape is not lower than the height of the second water outlet 33. This is because if the bending height of the inverted "U" shape is lower than the height of the second outlet 33, as rainwater from the rainwater riser 2 continuously flows into the sealing cavity 12 until it is full, the rainwater in the sealing cavity 12 will flow into the pressure storage cavity through the air pipe 3. Once rainwater enters the pressure storage cavity 11, it cannot be discharged. Therefore, in order to prevent rainwater in the sealing cavity 12 from flowing into the pressure storage cavity 11, in this embodiment, the bending height of the inverted "U" shape is designed to be equal to or greater than the height of the second outlet 33. This ensures that even if the sealing cavity 12 is filled with rainwater from the rainwater riser 2, the rainwater will preferentially be discharged from the second outlet 33 because the bending height is higher than the height of the second outlet 33. This effectively prevents the rainwater in the sealing cavity 12 from flowing into the pressure storage cavity 11 and being unable to be discharged.

[0042] In some possible implementations, a drain valve 123 is provided on the drain outlet 122. The drain valve 123 is a manual valve with an opening degree set according to the time T1 when the flexible interceptor needs to be opened and / or the time T2 when it needs to be closed.

[0043] In order to better control the opening and / or closing time of the flexible flow blocking device 1, a manual valve can be set, and the opening degree of the manual valve can be set in advance according to the required opening and / or closing time of the flexible flow blocking device 1. This allows the pre-set drainage flow rate of the drain outlet to be achieved. Moreover, the manual valve does not require additional power supply, which makes it possible to achieve a completely powerless control effect in this embodiment.

[0044] In some possible implementations, a drain valve 123 is provided on the drain outlet 122. The drain valve is a solenoid valve. The opening time T3 of the solenoid valve is set according to the opening time T1 of the flexible flow-blocking device, and / or the closing time T4 of the solenoid valve is set according to the closing time T2 of the flexible flow-blocking device.

[0045] To achieve better real-time control of the opening and / or closing time of the flexible flow-stopping device 1, and to obtain precise control over its opening and / or closing, a solenoid valve can be installed, and a controller can be added to control the solenoid valve in real time. For example, an opening time T3 can be preset; when T3 is reached, the controller sends a control command to control the solenoid valve. Similarly, a closing time T4 can be preset; when T4 is reached, the controller sends a control command to control the solenoid valve. This achieves real-time and precise control. Furthermore, since the solenoid valve consumes relatively little power, it can be powered by a battery or solar energy, effectively achieving low-power, low-consumption control.

[0046] In some possible implementations of this first embodiment, the diverter 3 is a three-way pipe, and the inlet 31, the first outlet 32, and the second outlet 33 are the three pipe openings corresponding to the three-way pipe. This allows the rainwater flowing through the rainwater downpipe 2 to be diverted through the three-way pipe, so that a portion of the rainwater is diverted and forms a water column pressure in the rainwater downpipe, while the other portion of the rainwater is diverted and discharged directly to the ground. This achieves the technical effect of diverting the rainwater flowing through the part where the diverter is installed.

[0047] Example 2

[0048] Please refer to the following for details. Figure 2 This is an overall structural block diagram of another pneumatic control component provided in an embodiment of the present invention when used in a drainage system. The drainage system includes a well body 5, a rainwater riser 2, a flexible interception device 1, and the pneumatic control component provided in an embodiment of the present invention.

[0049] The air pressure control component is used to control the opening and closing of the flexible interception device 1. The flexible interception device 1 has a pressure storage chamber 11 with adjustable volume. A rainwater downpipe 2 is installed outside the building 6 adjacent to the flexible interception device 1. The control component specifically includes: a sealing chamber 12, a guide pipe 41, an air pipe 4, and a diverter 3. The sealing chamber 12 has an air vent 121 and a drain outlet 122. The diverter 3 installed on the rainwater downpipe 2 has an inlet 31, a first outlet 32, and a second outlet 33. The inlet 31 is connected to the inlet end 21 of the rainwater downpipe 2, and the first outlet 32 ​​is connected to the outlet end 22 of the rainwater downpipe 2. The air pipe 4 is connected to the air vent 121 and the pressure storage chamber 11 respectively. One end of the guide pipe 41 is connected to the second outlet 33, and the other end passes through the sealing chamber 12 and is located at the bottom of the sealing chamber 12.

[0050] Specifically, in this second embodiment, a sealed cavity 12 is provided, with a vent 121 and a drain outlet 122. The vent 121 is connected to the pressure storage cavity 11 via an air pipe 4. One end of the guide pipe 41 is connected to the second outlet 33, and the other end passes through the sealed cavity 12 and is located at the bottom of the sealed cavity 12. When the flexible interception device 1 is closed, rainwater flowing into the rainwater riser 2 through the inlet 21 of the rainwater riser 2 flows into the sealed cavity 12 sequentially through the inlet 31, the second outlet 33, and the guide pipe 41 in the diverter 3, and compresses the air in the sealed cavity 12 into the pressure storage cavity 11 sequentially through the vent 121 and the air pipe 4. Thus, as the water volume in the sealed cavity increases, the air pressure gradually increases, and under the action of this air pressure, the flexible interception device 1 begins to be compressed and deformed, thereby achieving flexible interception. The flow control device 1 gradually closes; when the flexible flow control device 1 opens, the rainwater in the sealed cavity 12 is discharged through the drain outlet 122, which gradually increases the gas holding space in the sealed cavity 12. The gas in the pressure storage cavity 11 flows back into the sealed cavity 12, and the gas pressure formed in the sealed cavity 12 gradually decreases. The flexible flow control device 1 begins to expand and recover under its own elastic force, thus realizing the gradual opening of the flexible flow control device 1. In this way, the opening or closing of the flexible flow control device 1 is controlled by the gas pressure formed after the rainwater in the rainwater riser 2 outside the building 6 flows into the sealed cavity 12. There is no need to configure an additional gas station / power station to provide driving force, which reduces safety risks and saves the floor space required for additional control equipment. The new air pressure control component provided by the present invention has the technical effects of low cost and small floor space.

[0051] It should be noted that the flexible interception device 1 in the above embodiment 2 is a device with elastic deformation, such as a flexible rubber sleeve. The pressure storage chamber 11 can be a water storage space with a space to accommodate rainwater formed by the outer side wall of the flexible rubber sleeve and the inner side wall of a certain outer shell, or it can be directly made by integrally molding a flexible rubber sleeve with a double-layer structure. This embodiment does not limit this. As long as the flexible interception device 1 can meet the requirement of having elastic deformation function, it is applicable to the present invention.

[0052] In some possible implementations of this second embodiment, the diversion component 3 includes a buffer box 34 and a partition 35. The inlet 31, the first outlet 32, and the second outlet 33 are correspondingly located on the buffer box 34. The outlet of the rainwater riser 2, connected to the first outlet 32, passes through the first outlet 32 ​​and is located within the buffer box 34, forming a buffer zone with the side wall of the buffer box 34. One side of the partition 35 is fixed within the buffer box 34, and the other side forms a flow area with the side wall of the buffer box 34, allowing rainwater to flow sequentially from the inlet end 21 of the rainwater riser 2 into the inlet and then into the buffer zone through the flow area. The second outlet is located at a height lower than the height at which the outlet of the rainwater riser passes through the first outlet within the buffer box. This allows rainwater flowing through the downpipe 2 to be diverted by the diverter. A portion of the diverted rainwater forms a water column pressure in the guide pipe 41, while the remaining portion is discharged directly to the ground through the downpipe 2. This achieves the technical effect of diverting rainwater flowing through the area where the diverter is located. Furthermore, the reason the second outlet is positioned at a lower height than the downpipe opening passing through the first outlet within the buffer box is that only when the second outlet is lower than the downpipe opening will rainwater flowing from the flow area into the buffer zone preferentially flow into the sealed cavity through the second outlet, thus preferentially forming a water column pressure within the sealed cavity.

[0053] In some possible implementations of this second embodiment, the air pipe 3 has a bending height equal to or greater than the height of the rainwater downpipe within the buffer box 34 after it enters the first outlet 32. For example... Figure 2The end of the air pipe 3 connected to the vent 121 of the sealed cavity 12 is bent in an inverted "U" shape, and the bending height of this inverted "U" shape is not lower than the height of the second outlet 33. This is because if the bending height of this inverted "U" shape is lower than the height of the rainwater riser pipe after it enters the first outlet 32 ​​and is inside the buffer box 34, then as the rainwater in the rainwater riser pipe 2 continuously flows into the sealed cavity 12 through the guide pipe 41 until it fills the sealed cavity 12, the rainwater in the sealed cavity 12 will flow into the pressure accumulator 11 through the air pipe 3. Once rainwater enters the pressure accumulator 11, it cannot be discharged. Therefore, in order to prevent the rainwater in the sealed cavity 12 from flowing into the pressure accumulator 11, in this embodiment, the present invention... In this embodiment, the bending height of the inverted "U"-shaped bend is designed to be equal to or greater than the height of the rainwater downpipe inside the buffer box 34 after it enters the first outlet 32. This ensures that even when the sealed cavity 12 is filled with rainwater, the rainwater will preferentially drain from the first outlet 32 ​​through the rainwater downpipe 2 because the bending height is higher than the height of the rainwater downpipe inside the buffer box 34 after it enters the first outlet 32. This effectively prevents the rainwater in the sealed cavity 12 from flowing into the pressure storage cavity 11 and being unable to drain.

[0054] In some possible implementations, a drain valve 123 is provided on the drain outlet 122. The drain valve 123 is a manual valve with an opening degree set according to the time T1 when the flexible interceptor needs to be opened and / or the time T2 when it needs to be closed.

[0055] Since this second embodiment and the first embodiment above belong to the same inventive concept, the structural parts that are the same as those in the first embodiment above will not be described again. Other parts of this second embodiment that are not described in detail can be referred to the first embodiment above.

[0056] Example 3

[0057] Based on the above embodiments one and two, this embodiment three also provides a flow interception device. This flow interception device includes the technical solutions described in embodiments one or two. Through the control components in this flow interception device, when the flexible flow interception device 1 is closed, rainwater flowing into the rainwater riser 2 through the inlet 21 of the rainwater riser 2 flows sequentially through the inlet 31, the first outlet 32, and the outlet 22 of the diverter 3 into the sealing cavity 12. This compresses the air in the sealing cavity 12, which then flows sequentially through the vent 121 and the air pipe 4 into the pressure storage cavity 11. Thus, as the water volume in the sealing cavity increases, the air pressure gradually increases, and under this air pressure, the flexible flow interception device 1 begins to be compressed and deformed, thereby gradually closing the flexible flow interception device 1. When the flexible flow interception device 1 is open... When activated, rainwater in the sealed cavity 12 is discharged through the drain outlet 122, which gradually increases the gas holding space in the sealed cavity 12. Gas in the pressure storage cavity 11 flows back into the sealed cavity 12, and the gas pressure formed in the sealed cavity 12 gradually decreases. The flexible interception device 1 begins to expand and recover under its own elastic force, thereby gradually opening the flexible interception device 1. The opening or closing of the flexible interception device 1 is controlled by the gas pressure formed after the rainwater in the rainwater riser 2 outside the building 6 flows into the sealed cavity 12. There is no need to configure an additional gas station / power station to provide driving force, which reduces safety risks and saves the floor space required for additional control equipment. The new air pressure control component provided by this invention has the technical effects of low cost and small floor space.

[0058] Alternatively, when the flexible interceptor 1 is closed, rainwater flowing into the rainwater downpipe 2 through the inlet 21 of the downpipe 2 flows into the sealing cavity 12 through the inlet 31, the second outlet 33, and the guide pipe 41 of the diverter 3, and compresses the air in the sealing cavity 12 into the pressure storage cavity 11 through the vent 121 and the air pipe 4. As the water volume in the sealing cavity increases, the air pressure gradually increases, and under this air pressure, the flexible interceptor 1 begins to be compressed and deformed, thus gradually closing the flexible interceptor 1. When the flexible interceptor 1 is open, the rainwater in the sealing cavity 12 is discharged through the drain 122, thus allowing the gas in the sealing cavity 12 to escape. As the storage space gradually increases, the gas in the pressure storage chamber 11 flows back into the sealing chamber 12, and the gas pressure formed in the sealing chamber 12 gradually decreases. Under its own elastic force, the flexible interception device 1 begins to expand and recover, thereby gradually opening the flexible interception device 1. In this way, the gas pressure formed after the rainwater in the rainwater riser 2 outside the building 6 flows into the sealing chamber 12 is used to control the opening or closing of the flexible interception device 1. There is no need to configure an additional gas station / power station to provide driving force, which reduces safety risks and saves the floor space required for additional control equipment. The new air pressure control component provided by this invention has the technical effects of low cost and small floor space.

[0059] Example 4

[0060] Based on the above embodiments one, two and three, this embodiment three also provides a drainage system. The drainage system includes a well body, a flexible interception device, a rainwater downpipe and the technical solution described in embodiment one. Through the control components of the drainage system, when the flexible interception device 1 is closed, the rainwater flowing into the rainwater downpipe 2 through the inlet 21 of the rainwater downpipe 2 flows into the sealing cavity 12 through the inlet 31, the first outlet 32 ​​and the outlet 22 of the rainwater downpipe 2 in the diversion component 3 in sequence. The air in the sealing cavity 12 is squeezed and flows into the pressure storage cavity 11 through the vent 121 and the air pipe 4 in sequence. As the water volume in the sealing cavity increases, the air pressure gradually increases. Under the action of this air pressure, the flexible interception device 1 begins to be compressed and deformed, thereby realizing the gradual closure of the flexible interception device 1. When the flexible interceptor 1 is opened, the rainwater in the sealed cavity 12 is discharged through the drain outlet 122, which gradually increases the gas holding space in the sealed cavity 12. The gas in the pressure storage cavity 11 flows back into the sealed cavity 12, and the gas pressure formed in the sealed cavity 12 gradually decreases. Under its own elastic force, the flexible interceptor 1 begins to expand and recover, thus realizing the gradual opening of the flexible interceptor 1. In this way, the gas pressure formed after the rainwater in the rainwater riser 2 outside the building 6 flows into the sealed cavity 12 is used to control the opening or closing of the flexible interceptor 1. There is no need to configure an additional gas station / power station to provide driving force, which reduces safety risks and saves the floor space required for additional control equipment. The new air pressure control component provided by this invention has the technical effects of low cost and small floor space.

[0061] Alternatively, when the flexible interceptor 1 is closed, rainwater flowing into the rainwater downpipe 2 through the inlet 21 of the downpipe 2 flows into the sealing cavity 12 through the inlet 31, the second outlet 33, and the guide pipe 41 of the diverter 3, and compresses the air in the sealing cavity 12 into the pressure storage cavity 11 through the vent 121 and the air pipe 4. As the water volume in the sealing cavity increases, the air pressure gradually increases, and under this air pressure, the flexible interceptor 1 begins to be compressed and deformed, thus gradually closing the flexible interceptor 1. When the flexible interceptor 1 is open, the rainwater in the sealing cavity 12 is discharged through the drain 122, thus allowing the gas in the sealing cavity 12 to escape. As the storage space gradually increases, the gas in the pressure storage chamber 11 flows back into the sealing chamber 12, and the gas pressure formed in the sealing chamber 12 gradually decreases. Under its own elastic force, the flexible interception device 1 begins to expand and recover, thereby gradually opening the flexible interception device 1. In this way, the gas pressure formed after the rainwater in the rainwater riser 2 outside the building 6 flows into the sealing chamber 12 is used to control the opening or closing of the flexible interception device 1. There is no need to configure an additional gas station / power station to provide driving force, which reduces safety risks and saves the floor space required for additional control equipment. The new air pressure control component provided by this invention has the technical effects of low cost and small floor space.

[0062] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pneumatic control assembly for controlling the opening and closing of a flexible intercepting device, the flexible intercepting device having a pressure storage chamber, and a rainwater downpipe installed outside the building adjacent to the flexible intercepting device, characterized in that, The air pressure control component includes: The sealed cavity has a vent and a drain outlet. The outlet end of the rainwater downpipe passes through the sealed cavity and is located at the bottom of the sealed cavity. A diverter installed on the rainwater downpipe, the diverter having an inlet, a first outlet and a second outlet, the inlet being connected to the inlet end of the rainwater downpipe, and the first outlet being connected to the outlet end of the rainwater downpipe; The trachea is connected to the air inlet and the accumulator chamber, respectively. When rainwater flows into the rainwater downpipe through the inlet, it flows into the sealed cavity through the inlet of the diverter, the first outlet, and the outlet of the rainwater downpipe in sequence. It also compresses the air in the sealed cavity and flows into the pressure storage cavity through the vent and the air pipe in sequence. Under the action of air pressure, the flexible intercepting device begins to compress and deform, causing the flexible intercepting device to gradually close. When rainwater in the sealed cavity is discharged through the drain outlet, the flexible interception device begins to expand and recover under its own elastic force, causing the flexible interception device to gradually open.

2. The pneumatic control component as described in claim 1, characterized in that: The air pipe has a bend height, which is equal to or greater than the height of the second water outlet.

3. The pneumatic control component as described in claim 1, characterized in that: A drain valve is provided on the drain outlet. The drain valve is a manual valve with an opening degree set according to the time T1 required for the flexible interceptor to open and / or the time required for it to close.

4. The pneumatic control component as described in claim 1, characterized in that: A drain valve is provided on the drain outlet. The drain valve is a solenoid valve. The opening time T3 of the solenoid valve is set according to the opening time T1 of the flexible intercepting device, and / or the closing time T4 of the solenoid valve is set according to the closing time T2 of the flexible intercepting device. The control component further includes a controller, which controls the opening and / or closing of the solenoid valve according to T3 and / or T4.

5. The pneumatic control component as described in claim 4, characterized in that: The solenoid valve is powered by a battery or solar energy.

6. The pneumatic control component according to any one of claims 1-5, characterized in that: The diverter is a T-junction.

7. A pneumatic control assembly for controlling the opening and closing of a flexible intercepting device, the flexible intercepting device having a pressure storage chamber, and a rainwater downpipe installed outside the building adjacent to the flexible intercepting device, characterized in that... The air pressure control component includes: The sealed cavity has a vent and a drain outlet, and the drain outlet is equipped with a drain valve. A diverter installed on the rainwater downpipe, the diverter having an inlet, a first outlet and a second outlet, the inlet being connected to the inlet end of the rainwater downpipe, and the first outlet being connected to the outlet end of the rainwater downpipe; The guide pipe has one end connected to the second water outlet and the other end passing through the sealing cavity and placed at the bottom of the sealing cavity; The trachea is connected to the air inlet and the accumulator chamber, respectively. When the flexible interception device is closed, the rainwater flowing into the rainwater downpipe through the inlet end of the rainwater downpipe flows into the sealing cavity through the second outlet of the diverter and the guide pipe in sequence, and squeezes the air in the sealing cavity through the vent and the air pipe in sequence into the pressure storage cavity. Under the action of air pressure, the flexible interception device begins to compress and deform, causing the flexible interception device to gradually close. When the flexible interception device is activated, the rainwater in the sealed cavity is discharged through the drain outlet. Under its own elastic force, the flexible interception device begins to expand and recover, causing the flexible interception device to gradually open.

8. The pneumatic control component as described in claim 7, characterized in that, The diversion component includes: The buffer box has the inlet, the first outlet and the second outlet respectively opened on the buffer box. The outlet of the rainwater riser connected to the first outlet passes through the first outlet and is located inside the buffer box, forming a buffer zone with the side wall of the buffer box. A partition is fixed to the buffer box on one side, and forms a flow area with the side wall of the buffer box on the other side, so that rainwater flows into the inlet through the inlet end of the rainwater riser and into the buffer zone through the flow area. The second outlet is positioned at a height lower than the height at which the outlet of the rainwater downpipe passes through the first outlet within the buffer box.

9. The pneumatic control component as described in any one of claims 7-8, characterized in that: The air pipe has a bending height, which is greater than or equal to the height of the rainwater downpipe after it enters the first outlet within the buffer box.

10. The pneumatic control assembly as described in any one of claims 7-8, characterized in that: A drain valve is provided on the drain outlet. The drain valve is a manual valve and has an opening degree. The opening degree is set according to the time T1 required for the flexible interceptor to open and / or the time required for it to close. And / or, A drain valve is provided on the drain outlet. The drain valve is a solenoid valve. The opening time T3 of the solenoid valve is set according to the opening time T1 of the flexible flow-blocking device, and the closing time T4 of the solenoid valve is set according to the closing time T2 of the flexible flow-blocking device. The control component also includes a controller, which controls the opening and / or closing of the solenoid valve according to T3 and / or T4.

11. A flow interception device, characterized in that, include: The pneumatic control component according to any one of claims 1-10, wherein the flow-blocking device controls the opening and closing of the flexible flow-blocking device through the pneumatic control component.

12. A drainage system, characterized in that, include: Well body; Rainwater downpipes are installed on the exterior wall of a building adjacent to the well body; A flexible interception device is installed in the well body and connected to the rainwater riser; The air pressure control component according to any one of claims 1-10 is connected to the flexible flow-blocking device to control the opening and closing of the flexible flow-blocking device.

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