A drainage pipe flip weir plate interception and flushing device based on siphon suction

Abstract

The present invention discloses a drainage pipe flip weir intercepting and flushing device based on siphon suction, which relates to the technical field of drainage pipe management, and includes a starting valve, a flip weir, a water level gauge and a siphon drainage pipe, wherein the starting valve is arranged on the ground above the drainage pipe. The flip weir includes a circular segment-shaped baffle and a rotating shaft connected to the baffle, and the bottom end of the baffle is in clearance with the inner wall of the drainage pipe. One end of the rotating shaft is connected to the starting valve, and the other end coincides with the center of the baffle. The water level gauge is used to measure the water level on the upstream side of the flip weir. The inlet end of the siphon drainage pipe is arranged upstream of the flip weir and communicated with the bottom of the inner cavity of the drainage pipe, and the outlet end of the siphon drainage pipe is arranged downstream of the flip weir and communicated with the side wall of the drainage pipe. In the dry season, the siphon drainage pipe quickly transports the sediment upstream of the flip weir to the downstream of the flip weir. In the rainy season, the flip weir is parallel to the drainage direction of rainwater, and the drainage pipe is drained normally.

Description

Technical Field

[0001] The invention relates to the technical field of drainage pipe management, and in particular to a drainage pipe flip weir plate interception and flushing device based on siphon suction. Background Art

[0002] Drainage pipes are an important part of the drainage system and an important passage for urban water circulation. They mainly include rainwater and sewage pipes under the diversion system and combined drainage pipes. Among them, the diversion drainage system is a system that discharges domestic sewage, industrial wastewater and rainwater in two or more independent pipes. The diversion system has a low degree of pollution to the water body; the combined drainage system is a drainage system that mixes domestic sewage, industrial wastewater and rainwater in the same channel. Therefore, the combined system has a relatively high degree of pollution to the water body. Many large cities in my country have formed a relatively complete diversion drainage pipe system, but due to historical legacy and the difficulty of current transformation, many drainage pipe networks in old urban areas still have a large number of combined systems. Due to various reasons such as the lag of sewage system construction behind the rainwater system and the failure to simultaneously implement pollution source management, some sewage that should have been connected to the sewage pipe network was mixed with the rainwater pipe network, so that some diversion systems did not achieve true rainwater and sewage separation.

[0003] In the dry season, the flow rate of sewage is low, and a large amount of pollutants in it are deposited in the drainage pipes, which is called "hiding dirt and filth"; on rainy days, pollutants in the atmosphere and the surface and a large amount of sediment in the rainwater pipes are washed into natural water bodies by rainwater, which is called "zero deposit and full withdrawal". When the sewage in the drainage pipe is in a state of small flow and low flow rate, due to insufficient hydraulic flushing, the particles in the sewage will gather a large amount of organic matter under the action of gravity and gather at the bottom of the pipe to form sediment. When the sewage in the drainage pipe maintains a low flow rate for a long time, the organic components in the bottom sediment will ferment due to long-term hypoxia. On the one hand, it will make the sediment black and smelly, and on the other hand, it will further increase the viscosity of the sediment, making the bottom sediment more difficult to flush. Sediments will become black and smelly when they are in the drainage pipes for a long time. When it rains, the black and smelly sediments will enter the natural water body with rainwater and pollute water resources. Therefore, for the split-flow mixed rainwater pipes and combined pipes, the sewage sediments in the drainage pipes will cause black and smelly pollution in the water body. Summary of the invention

[0004] In order to solve the problem of particle deposition in low-flow sewage in the drainage pipe in the prior art, the present invention provides a drainage pipe flip weir plate interception and flushing device based on siphon suction, comprising:

[0005] A start valve, the start valve being arranged on the ground above the drainage pipe;

[0006] The flip weir plate includes a circular segment-shaped baffle plate and a rotating shaft connected to the baffle plate, the bottom end of the baffle plate is in clearance with the inner wall of the drainage pipe, one end of the rotating shaft is connected to the start valve, and the other end coincides with the center of the baffle plate;

[0007] A water level gauge, which is used to measure the water level on the upstream side of the overturned weir plate;

[0008] A siphon drain pipe, wherein the inlet end of the siphon drain pipe is arranged upstream of the inverted weir plate and communicates with the bottom of the inner cavity of the drainage pipe, and the outlet end of the siphon drain pipe is arranged downstream of the inverted weir plate and communicates with the side wall of the drainage pipe.

[0009] As a further improvement of the above technical solution:

[0010] The inlet end of the siphon drainage pipe is provided with a quasi-cyclone device, which can form a cyclone at the bottom of the water.

[0011] The cyclone-like device comprises a top plate and a bottom plate, the bottom plate is provided with a vertically penetrating water outlet, the water outlet is communicated with the siphon-type drain pipe, a guide plate is provided between the top plate and the bottom plate, and a guide channel is formed between two adjacent guide plates.

[0012] The inner wall of the drainage pipe is provided with a first sealing ring on the downstream side of the flip weir plate, and the first sealing ring is provided on one side of the rotating shaft. The inner wall of the drainage pipe is provided with a second sealing ring on the upstream side of the flip weir plate, and the second sealing ring is provided on the other side of the rotating shaft. The first sealing ring and the second sealing ring are used to limit the flow of water through the gap between the baffle and the drainage pipe.

[0013] The water level meter is in communication connection with the start-up valve, and the start-up valve is controlled to be opened and closed by its internal controller.

[0014] The start valve is opened and closed by external force.

[0015] The starting valve is provided with a display unit, and the display unit is used to display the state of the starting valve.

[0016] The water level gauge is connected to the rotating shaft, and the extending direction of the water level gauge is perpendicular to the water surface.

[0017] It also includes a stirring component, which includes a spiral shaft, a transmission rod, and a stirring paddle. One end of the spiral shaft is provided with a spiral blade, and the other end is provided with a first hemispherical gear. The spiral blade is arranged in the siphon drainage pipe; the transmission rod is connected to the drainage pipe through a sleeve, one end of the transmission rod is provided with a first gear, and the other end is provided with a second hemispherical gear, and the first hemispherical gear is meshed with the second hemispherical gear; the stirring paddle is arranged on the upstream side of the flip weir plate, the paddle shaft of the stirring paddle is rotatably connected to the drainage pipe, the paddle blades of the stirring paddle are arranged at the bottom of the drainage pipe, the paddle shaft is provided with a second gear, and the first gear is transmission-connected to the second gear.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The present invention intercepts low-flow-rate and low-flow sewage in the drainage pipe by setting a baffle, and connects the upstream and downstream of the baffle by setting a siphon-type drainage pipe. When the intercepted liquid level reaches the siphon water level of the siphon-type drainage pipe, that is, the liquid level reaches the top of the siphon-type drainage pipe, a siphon phenomenon occurs in the siphon-type drainage pipe, and the sewage and alluvial materials at the bottom of the drainage pipe are quickly sucked to the downstream of the baffle to prevent the formation of sediment in the drainage pipe. By setting a start valve and a flip weir plate, the start valve can control the rotation of the flip weir plate. When the circular section of the baffle plate is perpendicular to the cross section of the drainage pipe, the baffle plate will hardly intercept sewage. In the rainy season, the sewage flow is large and the flow rate is fast. After the flip weir plate is rotated, the flip weir plate will not affect the drainage of the drainage pipe. The present invention is simple and reliable, economical and environmentally friendly, and easy to disassemble. It has good applicability. It only needs to simply modify the existing rainwater pipe or combined pipe to prevent the formation of sediment in the drainage pipe.

[0020] (2) By setting up a cyclone-like device, on the one hand, it prevents the water surface from generating vortexes and air from entering the siphon drain pipe; on the other hand, it forms a water shear vortex at the bottom of the water, which can flush the bottom sediments and help transfer the alluvial materials upstream of the baffle to downstream of the baffle.

[0021] (3) By setting up a stirring component, when a siphon phenomenon occurs in the siphon drainage pipe, the water flow can drive the spiral shaft to rotate, and then drive the blades to rotate, which can stir and flip the sewage upstream of the weir plate, thereby preventing the deposition of particulate matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a partial structural cross-sectional schematic diagram of the present invention;

[0024] Figure 2 This is a top view of the flip weir plate when it is closed;

[0025] Figure 3 It is a schematic diagram of the position of the blades;

[0026] Figure 4 is a top view of the guide plate in the cyclone-like device;

[0027] Figure 5 is a partial cross-sectional view of a cyclone-like device;

[0028] Figure 6 is a top view of a guide plate in a cyclone according to another embodiment;

[0029] Figure 7 This is a schematic diagram of the cooperation between the siphon drain pipe and the spiral shaft;

[0030] Figure 8 It is a siphon drain pipe route.

[0031] Reference numerals:

[0032] 1. Drain pipe; 2. Start valve; 3. Flip weir plate; 31. Baffle plate; 32. Rotating shaft; 4. Water level gauge; 5. Siphon drain pipe; 6. Cyclone-like device; 61. Top plate; 62. Bottom plate; 63. Guide plate; 71. First sealing ring; 72. Second sealing ring; 81. Siphon water level; 82. Start water level; 91. Screw shaft; 92. Transmission rod; 921. Sleeve; 922. First gear; 93. Agitator paddle; 931. Paddle; 932. Second gear. DETAILED DESCRIPTION

[0033] The following embodiments of the present invention are further described in detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. In the absence of mutual contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0034] Figure 1 A partial structural cross-sectional schematic diagram of the present invention is illustrated. Figure 2 The top view of the flip weir plate 3 when it is closed is shown in the figure (the arrow in the figure indicates the direction of water flow). Figure 3 The schematic diagram of the position of the blade 931 is illustrated (the arrow in the figure indicates the direction of water flow), as shown in FIG. Figure 1-3As shown, the drainage pipe 1 flip weir plate 3 interception and flushing device based on siphon suction of this embodiment includes: a start valve 2, a flip weir plate 3, a water level gauge 4 and a siphon drainage pipe 5. The start valve 2 is arranged on the ground above the drainage pipe 1, which is convenient for the staff to observe and control the state of the device. The flip weir plate 3 includes a circular segment-shaped baffle plate 31 and a rotating shaft 32 connected to the baffle plate 31. The bottom end of the baffle plate 31 is arc-shaped. The bottom end of the baffle plate 31 is in a gap with the inner wall of the drainage pipe 1. The baffle plate 31 can be coaxial with the drainage pipe 1. One end of the rotating shaft 32 penetrates the drainage pipe 1 and is connected to the start valve 2. The start valve 2 can control the rotating shaft 32 to rotate. The other end of the rotating shaft 32 coincides with the center of the baffle plate 31, that is, the length extension direction of the rotating shaft 32 coincides with the radial direction of the baffle plate 31. The baffle plate 31 can rotate with the rotating shaft 32 as the central axis. The rotating shaft 32 can be plugged, welded or integrally formed with the baffle plate 31. The water level meter 4 is used to measure the water level on the upstream side of the inverted weir plate 3, that is, the liquid level. In one embodiment, the measured value of the water level meter 4 can be displayed in the start valve 2. The inlet end of the siphon drain pipe 5 is arranged upstream of the inverted weir plate 3 and communicated with the bottom of the inner cavity of the drainage pipe 1, and the outlet end of the siphon drain pipe 5 is arranged downstream of the inverted weir plate 3 and communicated with the side wall of the drainage pipe 1. The siphon drain pipe 5 is inverted U-shaped. When the liquid in the siphon drain pipe 5 exceeds the highest point (i.e., the siphon water level 81) and falls due to gravity, a siphon phenomenon will occur in the siphon drain pipe 5, and the sediment upstream of the inverted weir plate 3 will be quickly transported to the downstream of the inverted weir plate 3.

[0035] In this embodiment, the spiral shaft 91 is not provided in the siphon drainage pipe 5. It is generally believed that the mud content of municipal sewage in the pipeline is generally above 99.5%, so it is believed that the flow law of sewage follows the general fluid law, and the calculation is calculated according to the hydraulic uniform flow formula.

[0036] The calculation formula of water head loss in siphon drainage pipe 5 is: h = h j +h i

[0037]

[0038]

[0039]

[0040] in:

[0041] h represents the total head loss (m);

[0042] h j represents the head loss along the way (m);

[0043] h i represents the local head loss (m);

[0044] v represents the average flow velocity of the cross section (m / s);

[0045] l represents the total length of the siphon drainage pipe (m);

[0046] d represents the diameter of the siphon drainage pipe (m);

[0047] R represents the hydraulic radius (m);

[0048] ξ represents the local head loss coefficient.

[0049] Figure 8 The siphon drain pipe 5 routing is shown as an example. According to this design routing, ξ=4.62, such as Figure 8 As shown, this embodiment uses UPVC pipe. If:

[0050] (1) The diameter of the siphon drainage pipe 5 is d = 0.15m, the total length of the siphon drainage pipe 5 is l = 2m, the average flow velocity of the siphon drainage pipe 5 is v = 0.70m / s, and the calculated sewage flow rate is Q = 0.0124m 3 / s, the total head loss h=0.34m, which means that when the water surface pressure difference H before and after the baffle 31 is greater than 0.34m, the siphon drain pipe 5 will quickly suck the sewage, and the higher the water surface pressure difference before and after, the better the suction effect;

[0051] (2) The diameter of the siphon drainage pipe 5 is d = 0.20 m, the total length of the siphon drainage pipe 5 is l = 2 m, the average flow velocity of the siphon drainage pipe 5 is v = 0.70 m / s, and the calculated sewage flow rate is Q = 0.022 m 3 / s, total water head loss h=0.27m. That is to say, when the water surface pressure difference H before and after the baffle 31 is greater than 0.27m, the siphon drain pipe 5 will quickly suck the sewage.

[0052] By comparing the two schemes, it can be seen that the greater the water surface pressure difference H before and after the baffle 31, the larger the diameter d of the siphon drainage pipe 5, the greater the drainage flow rate, and the better the suction effect. However, considering the economy and applicability, the water surface pressure difference H before and after the baffle 31 should be ≥0.35m. Therefore, this design scheme is suitable for the modification of drainage pipes 1 above DN800, and the siphon drainage pipe 5 is recommended to use DN100~DN200.

[0053] The present invention intercepts the sewage with low flow rate and small flow in the drainage pipe 1 by setting a baffle 31, and connects the upstream and downstream of the baffle 31 by setting a siphon drainage pipe 5. When the intercepted liquid level reaches the siphon water level 81 of the siphon drainage pipe 5, that is, the liquid level reaches the top of the siphon drainage pipe 5, a siphon phenomenon occurs in the siphon drainage pipe 5, and the sewage and alluvial materials at the bottom of the drainage pipe 1 are quickly sucked to the downstream of the baffle 31, so as to prevent the formation of sediment in the drainage pipe 1. By setting a start valve 2 and a flip weir plate 3, the start valve 2 can control the rotation of the flip weir plate 3. When the circular section of the baffle plate 31 is perpendicular to the cross section of the drainage pipe 1, the baffle plate 31 will hardly intercept sewage. In the rainy season, the sewage flow is large and the flow rate is fast. After the flip weir plate 3 is rotated, the flip weir plate 3 will not affect the drainage of the drainage pipe 1. The present invention is simple, reliable, economical and environmentally friendly. It only needs to simply modify the existing rainwater pipe or combined pipe to prevent the formation of sediment in the drainage pipe 1.

[0054] According to the embodiment of the present invention, a cyclone-like device 6 is provided at the inlet end of the siphon drainage pipe 5. The cyclone-like device 6 can form a water shear vortex at the bottom of the water to flush the bottom sediments.

[0055] According to an embodiment of the present invention, Figure 4 The top view of the guide plate 63 in the cyclone-like device 6 is illustrated. Figure 5 A partial cross-sectional view of a cyclone-like device 6 is illustrated. Figure 6 A top view of a guide plate 63 in a cyclone 6 of another embodiment is shown. Figure 4-6 As shown, the cyclone-like device 6 includes a top plate 61 and a bottom plate 62. The bottom plate 62 is provided with a vertically penetrating water outlet, which is connected to the siphon drain pipe 5. A guide plate 63 is provided between the top plate 61 and the bottom plate 62. The extension direction of the guide plate 63 from the outside to the inside can be clockwise or counterclockwise, and a guide channel is formed between two adjacent guide plates 63. Sewage enters the cyclone-like device 6 through the guide channel and enters the siphon drain pipe 5 through the water outlet. On the one hand, it prevents the water surface from generating a vortex and air from entering the siphon drain pipe 5. On the other hand, a water shear vortex is formed at the bottom of the water, which can flush the bottom sediments and is conducive to transferring the alluvial materials upstream of the baffle 31 to downstream of the baffle 31.

[0056] According to an embodiment of the present invention, Figure 2 As shown, the inner wall of the drainage pipe 1 is provided with a first sealing ring 71 on the downstream side of the flip weir plate 3, and the first sealing ring 71 is provided on one side of the rotating shaft 32. The inner wall of the drainage pipe 1 is provided with a second sealing ring 72 on the upstream side of the flip weir plate 3, and the second sealing ring 72 is provided on the other side of the rotating shaft 32. The first sealing ring 71 and the second sealing ring 72 are used to limit the water flow from the gap between the baffle plate 31 and the drainage pipe 1. It is beneficial for the baffle plate 31 to intercept the sewage and reach the siphon water level 81 of the siphon drainage pipe 5.

[0057] According to an embodiment of the present invention, Figure 1 As shown, the water level gauge 4 is in communication connection with the start valve 2, and the start valve 2 is controlled to open and close by its internal controller. The water level gauge 4 can transmit the signal of the liquid level to the start valve 2, and the start valve 2 makes corresponding opening and closing actions, making the start valve 2 more sensitive and quick in response.

[0058] According to an embodiment of the present invention, Figure 1 As shown, the start valve 2 is opened and closed by external force control. When an accident occurs or maintenance is required, the staff can control the opening and closing of the start valve 2.

[0059] According to an embodiment of the present invention, the start valve 2 is provided with a display unit, which is used to display the state of the start valve 2. The staff can observe the state of the start valve 2 on the ground, and thus know the state of the flip weir plate 3.

[0060] According to an embodiment of the present invention, Figure 1 As shown, the water level gauge 4 is connected to the rotating shaft 32, and the extending direction of the water level gauge 4 is perpendicular to the water surface. The water level gauge 4 can also be a pressure sensor or other device arranged on the upstream side of the baffle 31.

[0061] According to an embodiment of the present invention, Figure 7 The schematic diagram of the cooperation between the siphon type drain pipe 5 and the spiral shaft 91 is shown as an example. Figure 1-2 and Figure 7 As shown, it also includes a stirring assembly, which includes a spiral shaft 91, a transmission rod 92, and a stirring paddle 93. A spiral blade is provided at one end of the spiral shaft 91, and a first hemispherical gear is provided at the other end. The spiral blade is provided in the siphon drain pipe 5. When a siphon phenomenon occurs in the siphon drain pipe 5, the water flow can drive the spiral shaft 91 to rotate. The spiral blade can be located in the water flow descending section of the siphon drain pipe 5. The transmission rod 92 is connected to the drainage pipe 1 through a sleeve 921, and the transmission rod 92 is rotatably connected to the sleeve 921. A first gear 922 is provided at one end of the transmission rod 92, and a second hemispherical gear is provided at the other end. The first hemispherical gear is meshed with the second hemispherical gear. When the spiral shaft 91 rotates, the first hemispherical gear drives the second hemispherical gear to rotate, and at the same time, the transmission rod 92 and the second hemispherical gear rotate synchronously. The stirring paddle 93 is arranged on the upstream side of the overturning weir plate 3, the paddle shaft of the stirring paddle 93 is rotatably connected to the drainage pipe 1, the paddle blade 931 of the stirring paddle 93 is arranged at the bottom of the drainage pipe 1, the paddle shaft is provided with a second gear 932, and the first gear 922 is transmission-connected with the second gear 932. When the transmission rod 92 rotates, the first gear 922 also rotates synchronously, the transmission drives the second gear 932 to rotate, and the paddle blade 931 rotates synchronously, and the paddle blade 931 can stir the sewage upstream of the overturning weir plate 3, thereby preventing the deposition of particles.

[0062] The working principle of the present invention is as follows: In a mixed rainwater pipe or a combined pipe, during the dry season, the reversing weir plate 3 intercepts low-flow and small-flow sewage, so that the water level H1 gradually increases. When the water level reaches the height of the top of the siphon pipe, that is, the siphon water level 81, a siphon phenomenon will occur in the siphon drainage pipe 5, and the sewage stored upstream of the reversing weir plate 3 will be quickly sucked. Since the siphon suction is extremely rapid, and because the inlet end of the siphon drainage pipe 5 is at the bottom of the drainage pipe 1, an instantaneous and strong pipe bottom flushing water wave will be formed to flush the bottom sediments. Because a cyclone-like device 6 is provided at the inlet end, a vortex will be formed at the bottom of the pipe, further increasing the flushing of the bottom sediments. The water flow in the siphon drainage pipe 5 can drive the spiral shaft 91 to rotate, and then drive the blade 931 to rotate, which can stir the sewage upstream of the reversing weir plate 3 to prevent the deposition of particles. For combined sewer pipes, the present invention can push sediments to move to the downstream pipes to the sewage treatment plant, thereby achieving a dredging effect; for separate rainwater pipes mixed with sewage, auxiliary facilities such as silt wells can be set behind the device of the present invention to collect sewage back into the sewage pipe. In the rainy season, as the rainfall runoff continues to increase, the water level H2 in the drainage pipe 1 gradually increases. When the set starting water level 82 of the starting valve 2 is reached, the electric starting valve 2 quickly acts to twist the flip weir plate 3 to a state parallel to the rainwater drainage direction to achieve the purpose of rapid discharge. Therefore, the device of the present invention does not affect the normal drainage function of the rainwater pipe or the combined sewer pipe; as the rainfall ends, the drainage water level H2 gradually decreases. When it decreases to the siphon water level 81, the starting valve 2 will quickly close and reset to the original dry season drainage state.

[0063] The technical solutions of the various embodiments of the present invention can be combined, and the technical features in the embodiments can also be combined to form new technical solutions. The structures that are not mentioned in the embodiments but can realize the relevant functions in the embodiments are prior arts.

[0064] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A drainage pipe flip weir plate interception and flushing device based on siphon suction, characterized in that: include: A start valve, the start valve being arranged on the ground above the drainage pipe; A flip weir plate, the flip weir plate comprising a circular segment-shaped baffle plate and a rotating shaft connected to the baffle plate, the bottom end of the baffle plate is sealed and combined with the drainage pipe, one end of the rotating shaft is connected to the start valve, and the other end coincides with the center of the baffle plate; A water level gauge, which is used to measure the water level on the upstream side of the overturned weir plate; A siphon drainage pipe, wherein the inlet end of the siphon drainage pipe is arranged upstream of the inverted weir plate and communicates with the bottom of the inner cavity of the drainage pipe, and the outlet end of the siphon drainage pipe is arranged downstream of the inverted weir plate and communicates with the side wall of the drainage pipe; The inner wall of the drainage pipe is provided with a first sealing ring on the downstream side of the flip weir plate, and the first sealing ring is provided on one side of the rotating shaft. The inner wall of the drainage pipe is provided with a second sealing ring on the upstream side of the flip weir plate, and the second sealing ring is provided on the other side of the rotating shaft. The first sealing ring and the second sealing ring are used to limit the flow of water through the gap between the baffle and the drainage pipe.

2. The drainage pipe flip weir interception and flushing device based on siphon suction according to claim 1 is characterized in that: The inlet end of the siphon drainage pipe is provided with a quasi-cyclone device, which can form a cyclone at the bottom of the water.

3. The drainage pipe flip weir interception and flushing device based on siphon suction according to claim 2 is characterized in that: The cyclone-like device comprises a top plate and a bottom plate, the bottom plate is provided with a vertically penetrating water outlet, the water outlet is communicated with the siphon-type drain pipe, a guide plate is provided between the top plate and the bottom plate, and a guide channel is formed between two adjacent guide plates.

4. The drainage pipe flip weir interception and flushing device based on siphon suction according to claim 1 or 2, characterized in that: The water level meter is in communication connection with the start-up valve, and the start-up valve is controlled to be opened and closed by its internal controller.

5. The drainage pipe flip weir interception and flushing device based on siphon suction according to claim 1 or 2, characterized in that: The start valve is opened and closed by external force.

6. The drainage pipe flip weir interception and flushing device based on siphon suction according to claim 1 or 2, characterized in that: The starting valve is provided with a display unit, and the display unit is used to display the state of the starting valve.

7. The drainage pipe flip weir interception and flushing device based on siphon suction according to claim 1 or 2, characterized in that: The water level gauge is connected to the rotating shaft, and the extending direction of the water level gauge is perpendicular to the water surface.

8. The drainage pipe flip weir interception and flushing device based on siphon suction according to claim 1 or 2, characterized in that: It also includes a stirring component, which includes a spiral shaft, a transmission rod, and a stirring paddle. One end of the spiral shaft is provided with a spiral blade, and the other end is provided with a first hemispherical gear. The spiral blade is arranged in the siphon drainage pipe; the transmission rod is connected to the drainage pipe through a sleeve, one end of the transmission rod is provided with a first gear, and the other end is provided with a second hemispherical gear, and the first hemispherical gear is meshed with the second hemispherical gear; the stirring paddle is arranged on the upstream side of the flip weir plate, the paddle shaft of the stirring paddle is rotatably connected to the drainage pipe, the paddle blades of the stirring paddle are arranged at the bottom of the drainage pipe, the paddle shaft is provided with a second gear, and the first gear is transmission-connected to the second gear.

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