A drainage pipe automatic interception flushing and dosing device

Abstract

The present invention discloses an automatic interception, flushing and dosing device for a drainage pipe, which relates to the technical field of drainage pipe water treatment, and includes a rotating weir plate, a seal, a drainage pipe, a starting component and a dosing component. The rotating weir plate and the seal cooperate to intercept sewage with low flow rate and small flow. When the sewage upstream of the rotating weir plate accumulates to a set water level, the starting component starts the drainage pipe to drain the sewage and quickly suck the sewage and alluvial materials upstream of the rotating weir plate to the downstream of the rotating weir plate. The rotating weir plate and the dosing component cooperate to realize the automatic rotation and resetting of the rotating weir plate. The dosing component can adjust the dosage of the dosing according to the water flow rate of the drainage pipe. For the diversion rainwater pipe with mixed sewage, the present invention can prevent the formation of sediments in the drainage pipe in the dry season, and reasonably and automatically dosing the water flow in the rainy season, so that the mixing ratio of the agent and rainwater remains stable.

Description

Technical Field

[0001] The invention relates to the technical field of drainage pipeline water treatment, in particular to an automatic interception, flushing and dosing device for a drainage pipeline. Background Art

[0002] With the continuous acceleration of urban construction in my country, drainage pipes are being built longer and longer, and there are more and more sewage treatment plants, which has continuously improved my country's urban sewage treatment capacity. 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, as well as 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 combined drainage system is a drainage system that mixes domestic sewage, industrial wastewater and rainwater in the same channel. In recent years, many large cities in my country have formed a relatively complete diversion drainage pipe system, but due to the lagging construction of the sewage system behind the rainwater system and the lack of simultaneous implementation of 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] During the dry season, when the sewage in the drainage pipe is in a state of low flow and low velocity, due to insufficient hydraulic scouring, 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 being in anoxic state for a long time. 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 pipe for a long time. When it rains, the black and smelly sediments will enter the natural water body with the rainwater and pollute water resources. Therefore, for the diversion system mixed rainwater pipe, the sewage sediments in the drainage pipe will cause black and smelly pollution in the water body.

[0004] During the rainy season, the pollutants in the rainy water are from a wide range of sources, with high concentrations and many types. In addition to being mixed with sewage and its pipe sediment pollution, the runoff rainwater also carries a large number of pollutants, including conventional pollutants such as ammonia nitrogen and COD, as well as new pollutants such as antibiotics and endocrine disruptors, and exists in the form of particulate matter, colloids and soluble organic matter. If the rainwater is not treated and directly discharged into the water body, the pollutants may exceed the environmental capacity of the water body in a short period of time, causing water pollution. Therefore, it is necessary to treat the rainwater pipe to reduce pollution, that is, to set up a regulating reservoir at the end of the modified rainwater pipe, collect the rainwater in the regulating reservoir, and discharge it after physical precipitation to remove pollutants. In-situ coagulation and flocculation as a means of rainwater treatment can make full use of the physical space of the rainwater pipe and the turbulent flow conditions of the incoming water to achieve full mixing of coagulants, flocculants and rainwater pipe water. At present, coagulants and flocculants are usually manually added, and the staff cannot control the amount of dosing according to the actual flow of rainwater in the drainage pipe, resulting in a non-standard mixing ratio of coagulants, flocculants and rainwater. Summary of the invention

[0005] In order to solve the problem that sewage sediments are accumulated in the rainwater pipes of the prior art that are mixed with sewage, causing black and smelly water pollution in the dry season, and the mixing ratio of the medicine and rainwater is not standard in the rainy season, the present invention provides an automatic interception, flushing and dosing device for drainage pipes, including:

[0006] A rotating weir plate, the rotating weir plate comprising a rotating shaft, a prefabricated torsion spring group and a circular segment-shaped baffle plate, one end of the rotating shaft is connected to the prefabricated torsion spring group, the prefabricated torsion spring group is connected to the top of the drainage pipe and provides a prefabricated torsion force for the rotating shaft; the other end of the rotating shaft is connected to the baffle plate and coincides with the central axis of the baffle plate, and the bottom end of the baffle plate is in clearance with the inner wall of the drainage pipe;

[0007] A sealing member, wherein the sealing member is arc-shaped and connected to the inner wall of the drainage pipe, and the sealing member is arranged on both sides of the rotating weir plate and limits the rotating weir plate;

[0008] A drainage pipe, wherein the inlet end of the drainage pipe is arranged upstream of the rotating weir plate and communicates with the bottom of the inner cavity of the drainage pipe, and the outlet end of the drainage pipe is arranged downstream of the rotating weir plate and communicates with the inner cavity of the drainage pipe; the drainage pipe is provided with an isolator, and the isolator is used to intermittently isolate the water flow upstream and downstream of the drainage pipe;

[0009] A starting assembly, the starting assembly is used to open the isolation member by utilizing the water level upstream of the rotating weir plate;

[0010] A dosing component, wherein the dosing component is connected to the rotating shaft, and the projection of the dosing component on the drainage pipe is located upstream of the rotating weir plate; the dosing component includes a shell, a water wheel, a groove wheel and a doser, wherein the shell is connected to the rotating shaft and is provided with an arc-shaped buffer cavity; the water wheel is rotatably connected to the shell and its axis is perpendicular to the direction of water flow, and one end of the water wheel is located in the buffer cavity; the groove wheel is annular and sleeved and connected to the water wheel, and the groove wheel is provided with an open groove, and the rear end of the open groove is an inclined surface; one end of the doser is connected to an external drug delivery component through a drug delivery tube, and the other end is connected to the top of the buffer cavity, and the bottom of the doser cooperates with the open groove, and the doser is used to put medicine into the drainage pipe.

[0011] As a further improvement of the above technical solution:

[0012] The top of the isolation member is rotatably connected to the drain pipe; the starting assembly includes a siphon tube, a water reservoir and a lever, the siphon tube passes through the baffle, the outlet end of the siphon tube is located above the water reservoir, the top of the water reservoir is open and a water leakage port is provided at the bottom; the fulcrum of the lever is connected to the baffle, one end of the lever is connected to the water reservoir through a first connecting member, and the other end is connected to the isolation member through a second connecting member, and the second connecting member is provided with a counterweight block.

[0013] The dosing device includes a dosing tube, a spring, a sealing plug, a dosing rod and a top ball. The dosing tube is provided with a drug storage cavity, and the drug storage cavity is connected with an external drug delivery component through a drug delivery tube; a dosing column is provided in the drug storage cavity, and a dosing cavity is provided inside the dosing column; a through hole is provided on the top of the dosing column, a one-way drug inlet valve is provided on the side wall of the dosing column, and an arc-shaped sealing cover is provided on the bottom of the dosing column, and the sealing cover is provided with a one-way flexible hole; a spring and a sealing plug are provided in the dosing cavity, one end of the spring is connected to the top of the dosing column, and the other end is connected to the sealing plug, and the sealing plug is slidably matched with the inner wall of the dosing cavity; one end of the dosing rod passes through the flexible hole and is connected to the sealing plug, and the other end is connected to the top ball, and the top ball is matched with the opening groove.

[0014] The seal comprises a first seal and a second seal distributed on both sides of the rotating shaft. The first seal is arranged on the upstream side of the rotating weir plate, and is used to prevent one end of the baffle plate from rotating upstream due to the prefabricated torsion and prevent water from passing through. The second seal is arranged on the downstream side of the rotating weir plate, and is used to prevent the other end of the baffle plate from rotating downstream and prevent water from passing through.

[0015] A cyclone-like device is provided at the inlet end of the drain pipe, and the cyclone-like device includes a top plate and a bottom plate. The bottom plate is provided with a vertically penetrating water outlet, and the water outlet is communicated with the 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.

[0016] The drug delivery tube is provided with a torque elimination component, and the drug delivery tube includes a first drug delivery tube and a second drug delivery tube, and the first drug delivery tube, the torque elimination component and the second drug delivery tube are connected in sequence;

[0017] The torque elimination assembly includes a first component and a second component, wherein a drug delivery cavity is provided in the second component, wherein one end of the first component cooperates with the inner wall of the drug delivery cavity via a ball bearing, and the other end passes through the drug delivery cavity; the first drug delivery tube passes through the first component and is connected to the drug delivery cavity, and the second drug delivery tube passes through the second component and is connected to the drug delivery cavity.

[0018] A roller is provided circumferentially at the bottom of the top ball, and the axis of the roller is parallel to the axis of the water wheel.

[0019] The medicine inlet valve comprises a medicine inlet port, a medicine inlet cover and a limit block. One end of the medicine inlet cover is hinged to the medicine inlet port, and the other end is abutted against the limit block.

[0020] A vertical slide rail is provided on the downstream side of the baffle, and the water storage tank is slidably connected to the slide rail.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention sets a prefabricated torsion spring group at the top of the rotating shaft, sets seals on both sides of the baffle for limiting and sealing, so that the baffle is perpendicular to the flow direction of sewage and intercepts sewage with low flow rate and small flow in the drainage pipe; sets a drainage pipe to connect the upstream and downstream of the baffle, sets a start component to open the isolation component, and when the water level upstream of the rotating weir plate reaches the set height, the start component starts and opens the isolation component, and the sewage can flow quickly to the downstream of the rotating weir plate through the drainage pipe to prevent sediment from forming in the drainage pipe. In the rainy season, the sewage flow is large and the flow rate is fast. When the water level upstream of the baffle plate exceeds the top of the baffle plate, the cross-sectional areas of the water flow in the vertical direction on both sides of the rotating shaft are different, and the bottom end of the rotating shaft generates torque. As the water level rises, the torque gradually increases. When the generated torque exceeds the prefabricated torque of the prefabricated spring group, the baffle plate is twisted around the rotating shaft. The projection of the dosing component on the drainage pipe is located upstream of the rotating weir plate, so the cross-sectional area of ​​the water flow vertically on one side of the baffle and the dosing component is always larger than that on the other side, and its torque is greater than the torque of the prefabricated spring group, so that the rotating weir plate always remains in a fully open state to achieve the purpose of rapid discharge without affecting the normal drainage of the rainwater pipe. At the same time, the water flow drives the water wheel to rotate. The greater the water flow rate, the greater the speed of the water wheel, and the greater the dosage of the added agent. The device can automatically adjust the dosage of the agent according to the flow in the drainage pipe, so that the mixing ratio of the agent and rainwater remains stable. When the water level gradually decreases, the torque at the bottom of the rotating weir plate gradually decreases, and the rotating weir plate begins to rotate due to the prefabricated torque, completing the automatic resetting of the device. The present invention is simple, reliable, economical and environmentally friendly. It only requires a simple modification of the existing rainwater pipe to prevent the formation of sediment in the drainage pipe and to reasonably dose the water flow during the rainy season. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a top view of the rotating weir when it is closed;

[0026] Figure 3 This is a top view of the rotating weir plate when it is open;

[0027] Figure 4 is a side view of the starter assembly;

[0028] Figure 5is a schematic diagram of the cooperation between the isolating member and the second connecting member;

[0029] Figure 6 is a schematic diagram of the deflector;

[0030] Figure 7 is a partial cross-sectional schematic diagram of a cyclone-like device;

[0031] Figure 8 is a schematic diagram of a guide plate in another embodiment;

[0032] Fig. 9 It is a schematic diagram of the dosing component;

[0033] Fig.10 yes Fig. 9 The enlarged view of point A in the middle;

[0034] Fig.11 This is a schematic diagram of another state of the dosing device;

[0035] Fig.12 is a cross-sectional view of the torque elimination assembly;

[0036] Fig.13 yes Fig.12 Schematic diagram of the cross section along the BB direction;

[0037] Fig.14 yes Fig.12 Schematic diagram of the CC section.

[0038] Reference numerals:

[0039] 1. Drainage pipe; 2. Rotating weir plate; 21. Rotating shaft; 22. Prefabricated torsion spring group; 23. Baffle; 3. Seal; 31. First seal; 32. Second seal; 4. Drain pipe; 41. Isolator; 5. Starter assembly; 51. Siphon; 52. Water reservoir; 53. Lever; 54. First connecting piece; 55. Second connecting piece; 56. Counterweight; 57. Slide rail; 6. Dosing assembly; 61. Shell; 62. Water wheel; 63. Groove wheel; 631. Open groove; 64. Dosing device; 641 , dosing tube; 642, dosing column; 643, drug inlet valve; 644, sealing cover; 645, flexible hole; 646, spring; 647, sealing plug; 648, dosing rod; 649, top ball; 65, drug delivery tube; 651, first drug delivery tube; 652, second drug delivery tube; 7, cyclone-like device; 71, top plate; 72, bottom plate; 73, guide plate; 74, guide channel; 8, torque elimination assembly; 81, first component; 82, second component; 83, drug delivery cavity; 91, siphon water level; 92, torsion water level. DETAILED DESCRIPTION

[0040] 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.

[0041] Figure 1 The overall structural diagram of the present invention is illustrated. Figure 2 The top view of the rotating weir plate 2 when it is closed is shown in the figure (the arrow in the figure indicates the direction of water flow). Figure 3 The top view of the rotating weir plate 2 when it is opened is shown. Fig. 9 The schematic diagram of the dosing assembly 6 is illustrated (the arrow in the figure indicates the direction of water flow). Fig.10 yes Fig. 9 The enlarged view of point A in the middle. Fig.11 Schematic diagram of another state of the dosing device 64 is shown. Figure 1-3 and Figure 9-11 As shown, the automatic interception flushing and dosing device for the drainage pipe 1 of this embodiment includes: a rotating weir plate 2, a sealing member 3, a drainage pipe 4, a starting assembly 5 and a dosing assembly 6. The rotating weir plate 2 includes a rotating shaft 21, a prefabricated torsion spring group 22 and a circular segment-shaped baffle plate 23. One end of the rotating shaft 21 is connected to the prefabricated torsion spring group 22. The prefabricated torsion spring group 22 is connected to the top of the drainage pipe 1 and provides a prefabricated torsion force for the rotating shaft 21. The other end of the rotating shaft 21 is connected to the baffle plate 23 and coincides with the central axis of the baffle plate 23. The baffle plate 23 can rotate with the rotating shaft 21 as the central axis. The bottom end of the baffle plate 23 is arc-shaped and is in clearance with the inner wall of the drainage pipe 1. The prefabricated torsion of the prefabricated torsion spring group 22 causes the baffle plate 23 to rotate. When the water level in the drainage pipe 1 is lower than the top of the baffle plate 23, the torsion force of the baffle plates 23 on both sides of the rotating shaft 21 is the same because the cross-sectional area of ​​the baffle plates 23 on both sides of the rotating shaft 21 corresponding to the vertical direction of the water flow is equal. The seal 3 is arc-shaped and connected to the inner wall of the drainage pipe 1. The seal 3 is arranged on both sides of the rotating weir plate 2 and limits the rotating weir plate 2. The seals 3 on both sides can limit the rotation direction of the baffle plate 23. The baffle plate 23 abuts against the seal 3, and the seal 3 can limit the water flow passing through the gap between the baffle plate 23 and the drainage pipe 1.

[0042] The inlet end of the drain pipe 4 is arranged upstream of the rotating weir plate 2 and communicated with the bottom of the inner cavity of the drain pipe 1, and the outlet end of the drain pipe 4 is arranged downstream of the rotating weir plate 2 and communicated with the inner cavity of the drain pipe 1; the drain pipe 4 is provided with an isolation member 41, which is used to intermittently isolate the water flow upstream and downstream of the drain pipe 4.

[0043] The start component 5 is used to open the isolation member 41 by utilizing the water level upstream of the rotating weir plate 2. When the water level upstream of the rotating weir plate 2 reaches a set height, the start component 5 starts and opens the isolation member 41, and the sewage can quickly flow to the downstream of the rotating weir plate 2 through the drain pipe 4.

[0044] The dosing assembly 6 is connected to the rotating shaft 21, and the dosing assembly 6 is located on one side of the rotating shaft 21. The side baffle 23 will rotate upstream due to the prefabricated torque. The projection of the dosing assembly 6 on the drainage pipe 1 is located upstream of the rotating weir plate 2. When the water level in the drainage pipe 1 is higher than the baffle 23, because the dosing assembly 6 is located on one side of the rotating shaft 21, the cross-sectional area of ​​the side baffle 23 and the dosing assembly 6 in the vertical direction of the water flow is larger than the other side baffle 23, generating torque. The dosing assembly 6 is used to put medicine into the drainage pipe 1. The dosing assembly 6 includes a shell 61, a water wheel 62, a groove wheel 63 and a dosing device 64. The shell 61 is connected to the rotating shaft 21 and is provided with an arc-shaped buffer cavity, which can be partially cylindrical. The water wheel 62 is rotatably connected to the housing 61 and its axis is perpendicular to the direction of the water flow. One end of the water wheel 62 is located in the buffer chamber, and the end of the water wheel 62 located in the buffer chamber will not be impacted by the water flow. Therefore, the water flow can drive the water wheel 62 to rotate. As the flow rate of the water flow in the drainage pipe 1 increases, the water flow velocity becomes faster, and the rotation speed of the water wheel 62 also becomes faster. The groove wheel 63 is annular and sleeved and connected to the water wheel 62. The groove wheel 63 rotates synchronously with the water wheel 62. The groove wheel 63 is provided with an open groove 631 that opens radially outward, and the rear end of the open groove 631 is an inclined surface. One end of the dosing device 64 is connected to an external drug delivery component (not shown in the figure) through a drug delivery tube 65, and the external drug delivery component can deliver drugs to the dosing device 64 through the drug delivery tube 65. The other end is connected to the top of the buffer chamber, and the bottom of the dosing device 64 cooperates with the open groove 631. When the water flow drives the water wheel 62 to rotate, the open groove 631 intermittently faces the bottom end of the dosing device 64, and the groove wheel 63 can drive the dosing device 64 to reciprocate, thereby realizing that the dosing component 6 adjusts the dosage of the added drug according to the flow of the drainage pipe 1.

[0045] The present invention sets a prefabricated torsion spring group 22 at the top of the rotating shaft 21, sets seals 3 on both sides of the baffle 23 for limiting and sealing, so that the baffle 23 is perpendicular to the flow direction of sewage and intercepts the sewage with low flow rate and small flow in the drainage pipe 1; sets a drainage pipe 4 to connect the upstream and downstream of the baffle 23, sets a start component 5 to open the isolation member 41, and when the water level upstream of the rotating weir plate 2 reaches the set height, the start component 5 starts and opens the isolation member 41, and the sewage can flow quickly to the downstream of the rotating weir plate 2 through the drainage pipe 4, so as to prevent the formation of sediment in the drainage pipe 1. In the rainy season, the sewage flow is large and the flow rate is fast. When the water level upstream of the baffle 23 exceeds the top of the baffle 23, the cross-sectional areas of the water flow in the vertical direction on both sides of the rotating shaft 21 are different, and the bottom end of the rotating shaft 21 generates a torsion force. As the water level rises, the torsion force gradually increases. When the generated torsion force exceeds the prefabricated torsion of the prefabricated spring group, the baffle 23 is twisted around the rotating shaft 21. The projection of the dosing component 6 on the drainage pipe 1 is located upstream of the rotating weir plate 2, so the cross-sectional area of ​​the water flow vertically on one side of the baffle 23 and the dosing component 6 is always larger than that on the other side, and its torque is greater than the torque of the prefabricated spring group, so that the rotating weir plate 2 always remains in a fully open state to achieve the purpose of rapid discharge and does not affect the normal drainage of the rainwater pipe. At the same time, the water flow drives the water wheel 62 to rotate. The greater the water flow rate, the greater the rotation speed of the water wheel 62, and the greater the dosage of the added agent. The device can automatically adjust the dosage of the agent according to the flow in the drainage pipe 1, so that the mixing ratio of the agent and rainwater remains stable. When the water level gradually decreases, the torque at the bottom of the rotating weir plate 2 gradually decreases, and the rotating weir plate 2 starts to rotate due to the prefabricated torque, completing the automatic resetting of the device. The present invention is simple, reliable, economical and environmentally friendly. It only needs to simply modify the existing rainwater pipe to prevent the formation of sediments in the drainage pipe 1 and reasonably dose the water flow during the rainy season.

[0046] It should be noted here that the rotating shaft 21 can be plugged, welded or integrally formed with the baffle 23. The baffle 23 can be coaxially arranged with the drainage pipe 1. The water wheel 62 is preferably bounded by the central axis, with the top end located in the buffer chamber. At this time, the efficiency of converting the kinetic energy of the water flow into the mechanical energy of the water wheel 62 is the highest. The dosing component 6 can be welded to the rotating shaft 21. The external drug delivery component can be a medicine bottle or a drug mixing tank located on the ground above the drainage pipe 1, and the drugs include coagulants, flocculants, etc. For the diversion rainwater pipe mixed with sewage, auxiliary facilities such as sludge wells can be set behind this device to collect the sewage back into the sewage pipe.

[0047] According to an embodiment of the present invention, Figure 4 A side view of the starter assembly 5 is illustrated, Figure 5 The schematic diagram of the cooperation between the isolating member 41 and the second connecting member 55 is illustrated (the arrow direction in the figure indicates the direction of water flow), as shown in FIG. Figure 1-5As described, the top of the isolation member 41 is rotatably connected to the drain pipe 4; the start assembly 5 includes a siphon 51, a water reservoir 52 and a lever 53. The siphon 51 penetrates the baffle 23 and is in an inverted U shape. When the liquid in the siphon 51 passes over the highest point (i.e., the siphon water level 91) and falls due to gravity, a siphon phenomenon will occur in the siphon 51, and the sewage upstream of the rotating weir plate 2 will be quickly transferred to the downstream of the rotating weir plate 2. The outlet end of the siphon 51 is located above the water reservoir 52. The top of the water reservoir 52 is open and the bottom is provided with a leaking port. The siphon 51 can quickly transfer the sewage upstream of the rotating weir plate 2 to the water reservoir 52. The fulcrum of the lever 53 is connected to the baffle 23. One end of the lever 53 is connected to the water reservoir 52 through the first connecting member 54, and the other end is connected to the isolation member 41 through the second connecting member 55. The second connecting member 55 is provided with a counterweight 56. When the water level upstream of the rotating weir plate 2 reaches the siphon water level 91, when the siphon tube 51 transfers the sewage to the water reservoir 52, the total mass of the water reservoir 52 and the stored sewage is greater than the mass of the counterweight 56, the lever 53 tilts toward one side of the water reservoir 52, and the other end is lifted, and the second connecting member 55 drives the isolation member 41 to move. Since the drain pipe 4 is at the bottom of the drainage pipe 1, the sewage upstream of the drain pipe 4 is quickly transferred to the downstream due to the pressure. A leak is provided at the bottom of the water reservoir 52, and the sewage in the water reservoir 52 will gradually leak, and the total mass of the water reservoir 52 and the stored sewage will decrease. When the total mass is less than the mass of the counterweight 56, the lever 53 tilts toward the counterweight 56, and the isolation member 41 automatically resets due to gravity and isolates the sewage upstream and downstream of the drain pipe 4. The first connecting member 54 and the second connecting member 55 can be soft rope bodies. The recommended diameter of the siphon tube 51 is DN25-DN40, which is convenient and fast. The recommended diameter of the leaking port is φ5-φ8. The volume of the water reservoir 52 should be such that the drainage pipe 1 can be stably opened for more than 60S after being blocked.

[0048] According to an embodiment of the present invention, Figure 9-11As shown, the dosing device 64 includes a dosing tube 641, a spring 646, a sealing plug 647, a dosing rod 648 and a top ball 649. A drug storage cavity is provided in the dosing tube 641, and the drug storage cavity is connected to the external drug delivery member through the drug delivery tube 65. A dosing column 642 is provided in the drug storage cavity, and a dosing cavity is provided inside the dosing column 642. A perforation is provided on the top of the dosing column 642, and a one-way drug inlet valve 643 is provided on the side wall of the dosing column 642. The medicine can only enter the dosing cavity from the drug storage cavity. A circular arc-shaped sealing cover 644 with an opening facing downward is provided at the bottom of the dosing column 642, and a one-way flexible hole 645 is provided at the top of the sealing cover 644. The flexible hole 645 can be made of rubber material and one side of the sealing cover 644 has redundant rubber material. The redundant rubber material can block the orifice, so that the flexible hole 645 is closed. A spring 646 and a sealing plug 647 are provided in the medicine-adding chamber. One end of the spring 646 is connected to the top of the medicine-adding column 642, and the other end is connected to the sealing plug 647. The sealing plug 647 is slidably matched with the inner wall of the medicine-adding chamber. One end of the medicine-adding rod 648 passes through the flexible hole 645 and is connected to the sealing plug 647, and the other end is connected to the top ball 649. The top ball 649 matches the opening groove 631. Since the rear end of the opening groove 631 is an inclined surface, as the water wheel 62 rotates, the opening groove 631 moves forward and pushes the top ball 649 to move upward, and the top ball 649 drives the sealing plug 647 to move upward. The medicine above the sealing plug 647 enters the medicine storage chamber through the perforation above the medicine-adding column 642, and the medicine in the medicine storage chamber enters the medicine-adding chamber through the medicine inlet valve 643. At this time, the flexible hole 645 is closed. When the top ball 649 is pushed by the spring 646 and falls into the opening groove 631, the sealing plug 647 moves downward, the medicine inlet valve 643 is closed, the flexible hole 645 is opened, and the medicine under the sealing plug 647 enters the drainage pipe 1 through the flexible hole 645, completing one dose. The dosing component 6 can ensure the airtightness, uniformity and unidirectionality of the dosing, and can automatically change different dosing rates according to the water flow velocity of the drainage pipe 1.

[0049] It should be noted here that there may be a plurality of opening grooves 631 , and the plurality of opening grooves 631 are distributed in a circular array along the outer circumference of the water wheel 62 .

[0050] According to an embodiment of the present invention, Fig.10 As shown, a roller is provided around the bottom of the top ball 649, and the axis of the roller is parallel to the axis of the water wheel 62. The roller can generate a roller rotation with the open groove 631, which can effectively reduce the friction between the two.

[0051] According to an embodiment of the present invention, the medicine inlet valve 643 includes a medicine inlet, a medicine inlet cover and a stop block, one end of the medicine inlet cover is hinged to the medicine inlet, and the other end is abutted against the stop block. When the medicine in the medicine storage cavity presses the medicine inlet cover, the medicine inlet cover rotates, and the medicine enters the medicine adding cavity through the medicine inlet, and when the medicine in the medicine adding cavity presses the medicine inlet cover, the medicine inlet cover is limited by the stop block to prevent the medicine from passing through the medicine inlet.

[0052] According to an embodiment of the present invention, Figure 1 As shown, a vertical slide rail 57 is provided on the downstream side of the baffle 23, and the water reservoir 52 is slidably connected to the slide rail 57. The slide rail 57 can limit the vertical movement of the water reservoir 52, thereby increasing the stability of the starter assembly 5.

[0053] According to an embodiment of the present invention, Figure 1-3 As shown, the seal 3 includes a first seal 31 and a second seal 32 distributed on both sides of the rotating shaft 21. The first seal 31 is arranged on the upstream side of the rotating weir plate 2 to prevent one end of the baffle plate 23 from rotating upstream due to the prefabricated torque and preventing water from passing through. The second seal 32 is arranged on the downstream side of the rotating weir plate 2 to prevent the other end of the baffle plate 23 from rotating downstream and preventing water from passing through. In the dry season, the baffle plate 23 has a tendency to rotate due to the prefabricated torque. The seal 3 limits the baffle plate 23 so that the baffle plate 23 is perpendicular to the flow direction of the water. At the same time, the seal 3 limits the water flow passing through the gap between the baffle plate 23 and the drainage pipe 1, which is conducive to the baffle plate 23 intercepting the sewage and reaching the siphon water level 91 of the siphon pipe 51. In the rainy season, the torque at the bottom end of the rotating shaft 21 is greater than the prefabricated torque at the top end, and the baffle plate 23 can rotate in the direction opposite to the prefabricated torque. When the baffle plate 23 is opened to the maximum, the angle between the baffle plate 23 and the water flow direction is zero.

[0054] According to an embodiment of the present invention, Figure 6 The schematic diagram of the guide plate 73 is illustrated. Figure 7 A partial cross-sectional schematic diagram of a cyclone-like device 7 is illustrated. Figure 8 A schematic diagram of the guide plate 73 in another embodiment is illustrated, as shown in FIG. Figure 2 and Figure 6-8 As shown, a cyclone-like device 7 is provided at the inlet end of the drain pipe 4. The cyclone-like device 7 includes a top plate 71 and a bottom plate 72. The bottom plate 72 is provided with a vertically penetrating water outlet, which is communicated with the drain pipe 4. A guide plate 73 is provided between the top plate 71 and the bottom plate 72. The extension direction of the guide plate 73 from the outside to the inside can be clockwise or counterclockwise, and a guide channel 74 is formed between two adjacent guide plates 73. Sewage enters the cyclone-like device 7 through the guide channel 74 and enters the drain pipe 4 through the water outlet. On the one hand, it prevents the water surface from generating a vortex and air from entering the drain pipe 4. 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 23 to the downstream of the baffle 23.

[0055] According to an embodiment of the present invention, Fig.12 A cross-sectional view of the torque elimination assembly 8 is illustrated, Fig.13 yes Fig.12 Schematic diagram of the cross section along the BB axis. Fig.14 yes Fig.12 Schematic diagram of CC section, such as Figure 1and Figure 12-14 As shown, the drug delivery tube 65 is provided with a torque elimination component 8, and the drug delivery tube 65 includes a first drug delivery tube 651 and a second drug delivery tube 652, and the first drug delivery tube 651, the torque elimination component 8 and the second drug delivery tube 652 are connected in sequence;

[0056] The torque elimination assembly 8 includes a first component 81 and a second component 82. A drug delivery cavity 83 is provided in the second component 82. One end of the first component 81 cooperates with the inner wall of the drug delivery cavity 83 through a ball bearing, and the other end passes through the drug delivery cavity 83. The first drug delivery tube 651 passes through the first component 81 and is connected to the drug delivery cavity 83. The second drug delivery tube 652 passes through the second component 82 and is connected to the drug delivery cavity 83. The first drug delivery tube 651 is connected to the drug delivery member, and the second drug delivery tube 652 is connected to the rotating shaft 21. The first drug delivery tube 651 can rotate relative to the second drug delivery tube 652. When the first drug delivery tube 651 is twisted, the ball bearing will rotate and displace, thereby eliminating the twisting force of the second drug delivery tube 652.

[0057] It should be noted that one end of the first component 81 passes through one end of the drug delivery cavity 83 and is sealed and rotatably connected to the second component 82, and the second drug delivery tube 652 seals and passes through the second component 82. The drug delivery tube 65 can be a rigid pipe.

[0058] Working principle of the present invention: In a rainwater pipe mixed with sewage, when the water level is low in the dry season, the baffle 23 is perpendicular to the flow direction of sewage, and the rotating weir plate 2 and the seal 3 intercept low-flow-rate, small-flow sewage, so that the water storage level H1 gradually increases. When the water level reaches the top height of the siphon tube 51, that is, the siphon water level 91, a siphon phenomenon will occur in the siphon tube 51, and the sewage upstream of the rotating weir plate 2 will be quickly transferred to the water reservoir 52. The lever 53 tilts toward one side of the water reservoir 52, the isolation plate opens, and there is a pressure difference at both ends of the drainage pipe 4, which will quickly suck the sewage stored upstream of the rotating weir plate 2 and transfer it to the downstream of the rotating weir plate 2. Due to the extremely rapid suction, an instantaneous and strong pipe bottom flushing water wave will be formed, which will have a flushing effect on the bottom sediments. Because a cyclone-like device 7 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 reservoir 52 is provided with a leaking port. As the sewage flows out of the leaking port, the lever 53 begins to tilt toward the counterweight 56, and the isolation plate closes the drain pipe 4. In the rainy season, as the rainfall runoff continues to increase, the water level H2 in the drainage pipe 1 gradually increases. When the water level reaches the dosing assembly 6, the lower end of the rotating weir plate 2 begins to generate torque. As the water level rises, the torque gradually increases. When the water level exceeds the torsion water level 92, the torque generated exceeds the prefabricated torque of the prefabricated spring group, and the rotating weir plate 2 is twisted around the rotating shaft 21 to achieve the purpose of rapid discharge, which will not affect the drainage function of the drainage pipe 1. At the same time, the water wheel 62 begins to rotate, and the greater the flow rate, the greater the speed of the water wheel 62, the groove wheel 63 rotates synchronously with the water wheel 62, and the open groove 631 cooperates with the top ball 649 to achieve intermittent dosing of the dosing assembly 6. The greater the water flow rate, the greater the speed of the water wheel 62, and the greater the dosage of the dosing agent. As the rainfall ends, the drainage water level H2 gradually decreases, and the torque at the lower end of the rotating weir plate 2 gradually decreases. When the torque is less than the prefabricated torque of the prefabricated spring group, the rotating weir plate 2 automatically returns to the original dry season drainage state.

[0059] 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.

[0060] 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 automatic interception flushing and dosing device, characterized in that: include: A rotating weir plate, the rotating weir plate comprising a rotating shaft, a prefabricated torsion spring group and a circular segment-shaped baffle plate, one end of the rotating shaft is connected to the prefabricated torsion spring group, the prefabricated torsion spring group is connected to the top of the drainage pipe and provides a prefabricated torsion force for the rotating shaft; the other end of the rotating shaft is connected to the baffle plate and coincides with the central axis of the baffle plate, and the bottom end of the baffle plate is in clearance with the inner wall of the drainage pipe; A sealing member, wherein the sealing member is arc-shaped and connected to the inner wall of the drainage pipe, and the sealing member is arranged on both sides of the rotating weir plate and limits the rotating weir plate; A drainage pipe, wherein the inlet end of the drainage pipe is arranged upstream of the rotating weir plate and communicates with the bottom of the inner cavity of the drainage pipe, and the outlet end of the drainage pipe is arranged downstream of the rotating weir plate and communicates with the inner cavity of the drainage pipe; the drainage pipe is provided with an isolator, and the isolator is used to intermittently isolate the water flow upstream and downstream of the drainage pipe; A starting assembly, the starting assembly is used to open the isolation member by utilizing the water level upstream of the rotating weir plate; A dosing component, wherein the dosing component is connected to the rotating shaft, and the projection of the dosing component on the drainage pipe is located upstream of the rotating weir plate; the dosing component includes a shell, a water wheel, a groove wheel and a doser, wherein the shell is connected to the rotating shaft and is provided with an arc-shaped buffer cavity; the water wheel is rotatably connected to the shell and its axis is perpendicular to the direction of water flow, and one end of the water wheel is located in the buffer cavity; the groove wheel is annular and sleeved and connected to the water wheel, and the groove wheel is provided with an open groove, and the rear end of the open groove is an inclined surface; one end of the doser is connected to an external drug delivery component through a drug delivery tube, and the other end is connected to the top of the buffer cavity, and the bottom of the doser cooperates with the open groove, and the doser is used to put medicine into the drainage pipe.

2. The automatic interception, flushing and dosing device for drainage pipes according to claim 1 is characterized in that: The top of the isolation member is rotatably connected to the drain pipe; the starting assembly includes a siphon tube, a water reservoir and a lever, the siphon tube passes through the baffle, the outlet end of the siphon tube is located above the water reservoir, the top of the water reservoir is open and a water leakage port is provided at the bottom; the fulcrum of the lever is connected to the baffle, one end of the lever is connected to the water reservoir through a first connecting member, and the other end is connected to the isolation member through a second connecting member, and the second connecting member is provided with a counterweight block.

3. The automatic interception, flushing and dosing device for drainage pipes according to claim 1 or 2, characterized in that: The dosing device includes a dosing tube, a spring, a sealing plug, a dosing rod and a top ball. The dosing tube is provided with a drug storage cavity, and the drug storage cavity is connected with an external drug delivery component through a drug delivery tube; a dosing column is provided in the drug storage cavity, and a dosing cavity is provided inside the dosing column; a through hole is provided on the top of the dosing column, a one-way drug inlet valve is provided on the side wall of the dosing column, and an arc-shaped sealing cover is provided on the bottom of the dosing column, and the sealing cover is provided with a one-way flexible hole; a spring and a sealing plug are provided in the dosing cavity, one end of the spring is connected to the top of the dosing column, and the other end is connected to the sealing plug, and the sealing plug is slidably matched with the inner wall of the dosing cavity; one end of the dosing rod passes through the flexible hole and is connected to the sealing plug, and the other end is connected to the top ball, and the top ball is matched with the opening groove.

4. The automatic interception, flushing and dosing device for drainage pipes according to claim 1 or 2, characterized in that: The seal comprises a first seal and a second seal distributed on both sides of the rotating shaft. The first seal is arranged on the upstream side of the rotating weir plate, and is used to prevent one end of the baffle plate from rotating upstream due to the prefabricated torsion and prevent water from passing through. The second seal is arranged on the downstream side of the rotating weir plate, and is used to prevent the other end of the baffle plate from rotating downstream and prevent water from passing through.

5. The automatic interception, flushing and dosing device for drainage pipes according to claim 1 or 2, characterized in that: A cyclone-like device is provided at the inlet end of the drain pipe, and the cyclone-like device includes a top plate and a bottom plate. The bottom plate is provided with a vertically penetrating water outlet, and the water outlet is communicated with the 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.

6. The automatic interception, flushing and dosing device for drainage pipes according to claim 3 is characterized in that: The drug delivery tube is provided with a torque elimination component, and the drug delivery tube includes a first drug delivery tube and a second drug delivery tube, and the first drug delivery tube, the torque elimination component and the second drug delivery tube are connected in sequence; The torque elimination assembly comprises a first component and a second component, wherein a drug delivery cavity is provided in the second component, one end of the first component cooperates with the inner wall of the drug delivery cavity through a ball, and the other end of the first component penetrates the drug delivery cavity; The first drug delivery tube passes through the first component and is communicated with the drug delivery cavity, and the second drug delivery tube passes through the second component and is communicated with the drug delivery cavity.

7. The automatic interception, flushing and dosing device for drainage pipes according to claim 3 is characterized in that: A roller is provided circumferentially at the bottom of the top ball, and the axis of the roller is parallel to the axis of the water wheel.

8. The automatic interception, flushing and dosing device for drainage pipes according to claim 3 is characterized in that: The medicine inlet valve comprises a medicine inlet port, a medicine inlet cover and a limit block. One end of the medicine inlet cover is hinged to the medicine inlet port, and the other end is abutted against the limit block.

9. The automatic interception, flushing and dosing device for drainage pipes according to claim 2 is characterized in that: A vertical slide rail is provided on the downstream side of the baffle, and the water storage tank is slidably connected to the slide rail.

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