CN113152637A - Integrated automatic intercepting well and intercepting method - Google Patents
Integrated automatic intercepting well and intercepting method Download PDFInfo
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- CN113152637A CN113152637A CN202110392982.3A CN202110392982A CN113152637A CN 113152637 A CN113152637 A CN 113152637A CN 202110392982 A CN202110392982 A CN 202110392982A CN 113152637 A CN113152637 A CN 113152637A
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- 239000010865 sewage Substances 0.000 claims abstract description 151
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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Abstract
The invention provides an integrated automatic intercepting well and an intercepting method, wherein the integrated automatic intercepting well comprises a well body, and a water inlet pipe, a sewage intercepting pipe and an overflow pipe which are arranged on the well body; the upper end of the well body is detachably connected with a well cover, the lower end of the well body is provided with a base, and the well body, the well cover and the base form a closed intercepting cavity; the interception cavity is provided with a basket grating structure, a sewage interception valve and an overflow valve; wherein, the basket grid structure is positioned at the position of the pipe orifice of the water inlet pipe; the sewage interception valve is positioned at the pipe orifice of the sewage interception pipe; the overflow valve is positioned at the position of the opening of the overflow pipe. According to the invention, two valves with different structures and controlled by water power are adopted to respectively control the flow of the sewage interception pipe and the overflow pipe, and the valves are automatically adjusted according to the water level condition of the valves, so that the functions of efficient sewage interception and high-precision sewage interception control are realized; meanwhile, the invention has the advantages of high integration, simple structure, convenient control, stable shutoff amount and simple construction.
Description
Technical Field
The invention relates to the technical field of drainage pipe networks, in particular to an integrated automatic intercepting well and an intercepting method.
Background
Catch basins are used in combined rain and sewage systems for the purpose of separating rain and sewage. In dry seasons, because only sewage is in the pipe, the intercepting well can intercept the sewage and flow the sewage into the sewage pipe, in rainy seasons, part of rainwater and the sewage are intercepted and flow into the sewage pipe, and the rest of rainwater overflows through the weir in the well and continues to flow downstream.
In recent years, pipeline sewage interception and reconstruction projects are built all over the country, urban dry season sewage and urban early rainwater are intercepted into a sewage interception pipe through an intercepting well and then discharged to a sewage pipe network, sewage cleaning and separation are realized, pollutants entering a downstream water body are reduced, and urban water environment deterioration is avoided.
Practice proves that the measure can effectively relieve the problem of water environment pollution, but the existing intercepting well has the following problems:
1) the accurate interception can not be realized, under the condition of rainstorm overflow, the confluence sewage in the intercepting pipe is full flow pressure flow, the actual intercepting flow of the intercepting well is far beyond the designed intercepting flow, the challenge is provided for the conveying capacity of the intercepting main pipe, the load of a sewage treatment plant is increased, and the normal safe operation of the sewage treatment plant is influenced.
2) Cut dirty efficiency lower, when a large amount of rainwater gushed into the inlet tube, cut dirty pipe fast full flow, upstream sewage can't be dams, and a large amount of pollutants are followed the rainwater and are gone into the river, lead to whole dirty efficiency reduction of cutting.
3) The anti-backflow facility has poor operation effect, the conventional anti-backflow facility comprises a duckbill valve, a float valve, a flap valve and the like, the conventional anti-backflow facility is mainly controlled hydraulically, the anti-backflow facility is opened and closed frequently in rainy seasons, parts are easy to wear, the service life is short, and the operation stability is poor; for example, when the flap valve runs, unstable water flow impacts, frequent vibration of the door leaf and excessive abrasion of the hinge affect flood safety.
4) And an intelligent sewage intercepting well is adopted to monitor and control the water quality and the water quantity to intercept. However, the monitoring system is too complex, the monitoring equipment is easy to damage, the dynamically opened and closed sewage interception gate is high in energy consumption, silt and sand are easy to deposit at the bottom of the backflow prevention gate, and the operation effect is poor. In addition, the intelligent sewage intercepting well is high in manufacturing cost, large in occupied area, inconvenient to construct and install and difficult to widely apply.
Therefore, the intercepting well integrating functions of sewage interception, flow control, overflow and backflow prevention needs to be researched and developed urgently, the flow can be accurately controlled, the operation is stable, the energy is saved, the consumption is reduced, and meanwhile, the construction and installation process can be optimized, so that the operation efficiency of the whole drainage pipe network is improved.
Disclosure of Invention
The invention provides an integrated automatic intercepting well and an intercepting method, which are used for solving the problems that the intercepting well in the prior art is low in intercepting efficiency, easy to cause backward flow of clear water, low in sewage concentration and high in energy consumption, and the operation control is complex.
The invention provides an integrated automatic intercepting well, which comprises a well body, and a water inlet pipe, a sewage intercepting pipe and an overflow pipe which are arranged on the well body;
the upper end of the well body is detachably connected with a well cover, the lower end of the well body is provided with a base, and the well body, the well cover and the base form a closed intercepting cavity;
the interception cavity is provided with a basket grating structure, a sewage interception valve and an overflow valve;
the basket grid structure is positioned at the position of a pipe orifice of the water inlet pipe;
the sewage interception valve is positioned at the position of the pipe orifice of the sewage interception pipe;
the overflow valve is positioned at the position of the orifice of the overflow pipe.
According to the integrated automatic intercepting well provided by the invention, the basket grid structure comprises the mesh grid basket and the pulling assembly, wherein the mesh grid basket is fixed by the pulling assembly and can be freely pulled out of the well body.
According to the integrated automatic intercepting well provided by the invention, the traction assembly comprises a guide rail, a hook and a ring chain, the guide rail is arranged along the axial direction of the well body, and the mesh-shaped grating basket is connected to the guide rail in a sliding manner and is fixed with the hook through the ring chain.
According to the integrated automatic intercepting well provided by the invention, the sewage intercepting valve comprises a shell and a connecting piece, wherein the connecting piece consists of a mounting plate and a water outlet connecting cylinder; the mounting panel is fixed in and cuts dirty pipe orifice department, go out the water connecting cylinder with the casing slope is connected.
According to the integrated automatic intercepting well provided by the invention, the shell is of a volute structure, so that water flow forms vortex in the shell to dissipate kinetic energy; and a water inlet diversion port and an access hole are arranged on the shell.
According to the integrated automatic intercepting well provided by the invention, the bottom of the intercepting cavity is provided with the converging groove, the converging groove is attached to the appearance design of the intercepting valve, and the converging groove is formed by extending the water inlet diversion port to the inner side wall of the well body.
According to the integrated automatic catch basin provided by the invention, the overflow valve comprises a buoy, a weir plate, a support and a valve base, the buoy is connected with the weir plate through the support, and the support is rotatably connected to the valve base, so that the buoy, the support and the weir plate can integrally and freely rotate.
According to the integrated automatic intercepting well provided by the invention, the telescopic maintenance escalator is arranged in the well body; the well lid is provided with a plurality of access holes and exhaust valves communicated with the intercepting cavity.
The invention provides a closure method of an integrated automatic closure well in a second aspect, which comprises the following steps:
step S1: when the liquid level height H in the interception cavity is less than the set liquid level height H1When the overflow valve is closed, dry flow sewage and initial rainwater enter the sewage intercepting pipe through the sewage intercepting valve and are discharged to a sewage pipeline;
step S2: when the liquid level height H in the interception cavity is larger than the set liquid level height H1And is smallAt a set liquid level height h2When the sewage is discharged, the weir plate of the overflow valve is lifted to separate the interception cavity from the overflow pipe, the interception cavity can accumulate the sewage to a set regulation volume V, and the sewage is discharged at a set flow q through the interception valve1Discharging to a sewage pipe; at the moment, a vortex is formed in the sewage interception valve, and the vortex air cavity is gradually stable so as not to exceed the set flow q1Continuously discharging the sewage to a sewage pipeline through a sewage interception pipe;
step S3: when the liquid level height H in the intercepting cavity exceeds the set liquid level height H2When the overflow valve rotates along with the height of the liquid level, the weir plate rotates along with the liquid level and is flatly placed at the bottom of the overflow pipe; at the moment, the sewage interception valve does not exceed the set flow q2The water quantity is discharged to a sewage pipe;
step S4: when the liquid level height H of the downstream water body of the overflow pipe is greater than the liquid level height H in the interception cavity, the floating barrel of the overflow valve and the weir plate are acted by the internal and external water levels together to gradually lift the weir plate, the top height of the weir plate is higher than the liquid level height H of the downstream water body, and the interception cavity is ensured to be relatively isolated from the overflow pipe;
at the moment, the upstream water still can enter the interception cavity through the water inlet pipe and is limited by the vortex of the interception valve so as not to exceed the set flow q2Through the sewage interception pipe and discharged to the sewage pipeline;
step S5: when the liquid level height H of the downstream water body of the overflow pipe exceeds the pipe bottom height of the overflow pipe, but does not exceed the liquid level height H in the interception cavity, the weir plate is under the combined action of the internal and external water levels, the top of the weir plate is lower than the liquid level height H in the interception cavity, the interception cavity is still communicated with the overflow pipe at the moment, the rainwater in the interception cavity can be discharged continuously through the overflow pipe, and meanwhile, the interception valve is not more than the set flow q2The water is continuously discharged to the sewage pipe.
According to the intercepting method provided by the invention, in the steps from S1 to S5, the flow rate q is set1The amount of drought sewage is; set flow rate q2To intercept the sewage flow.
The integrated automatic intercepting well provided by the invention has the advantages of low manufacturing cost, simple and convenient installation and small occupied area, can effectively save civil construction cost, and can be widely applied to urban water environment treatment, black and odorous water body treatment and combined system pipe network sewage interception.
The sewage interception valve and the overflow valve are ingenious in structural design, flow control of the sewage interception pipe and the overflow pipe is carried out through automatic adjustment of the water level condition of the valve, efficient interception of sewage can be realized, and functions of regulating and storing initial rainwater, preventing backflow, reducing waterlogging risk and the like can be realized; the valve can effectively avoid the intelligent sewage intercepting well from being provided with a complex online monitoring system and an intelligent control system for intercepting control, does not need electric control, and has lower energy consumption and lower manufacturing cost; meanwhile, unattended operation can be realized, and operation and maintenance cost is effectively saved.
In addition, in the intercepting method of the integrated automatic intercepting well provided by the invention, the integrated automatic intercepting well is provided, so that the advantages are also provided. And the interception multiple and the interception sewage concentration can be improved by the interception method.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a front view of an integrated automatic intercepting well provided by the present invention;
fig. 2 is a bottom view of the integrated automatic intercepting well provided by the present invention;
fig. 3 is a top view of an integrated automatic intercepting well provided by the present invention;
FIG. 4 is a schematic structural view of a basket grid structure according to the present invention;
FIG. 5 is a schematic structural view of the valve for intercepting sewage in the present invention;
FIG. 6 is a schematic diagram of the construction of the overflow valve of the present invention;
FIG. 7 is a schematic view of an integrated automatic intercepting well according to the present invention in use;
fig. 8 is a second schematic view illustrating a use state of the integrated automatic intercepting well according to the present invention;
fig. 9 is a third schematic view illustrating a use state of the integrated automatic intercepting well according to the present invention;
fig. 10 is a fourth schematic view illustrating a use state of the integrated automatic intercepting well according to the present invention;
fig. 11 is a fifth schematic view illustrating a use state of the integrated automatic intercepting well according to the present invention;
reference numerals:
1: a well body; 2: a water inlet pipe; 3: a sewage interception pipe;
4: an overflow pipe; 5: a top cover; 6: a base;
7: a shut-off chamber; 8: a basket grid structure; 81: a mesh grid basket;
82: a guide rail; 83: hooking; 84: a cyclic chain;
9: a sewage interception valve; 91: a housing; 92: a water inlet diversion port;
921: a baffle; 93: an access hole; 931: an access panel;
94: mounting a plate; 95: a water outlet connecting cylinder; 10: an overflow valve;
101: a float bowl; 102: a support; 103: a weir plate;
104: a valve base; 11: a confluence groove; 12: overhauling the escalator;
13: an access hole; 14: an exhaust valve; 15: and (6) pouring holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiments of the present invention will be described below with reference to fig. 1 to 11. It should be understood that the following description is only exemplary embodiments of the present invention and is not intended to limit the present invention in any way.
As an embodiment of the invention, the invention provides an integrated automatic intercepting well, which comprises a well body 1, wherein a water inlet pipe 2, a sewage intercepting pipe 3 and an overflow pipe 4 are arranged on the well body 1 around the side wall; wherein, the water inlet pipe 2 is communicated with an upstream rainwater/sewage pipeline, the sewage interception pipe 3 is communicated with a sewage pipe leading to a water treatment plant, and the overflow pipe 4 is communicated with a downstream rainwater pipe or a natural water body.
As shown in fig. 1 to 3, the well body 1 is a prefabricated hollow structural member, and can be made of glass fiber reinforced plastics, stainless steel or carbon steel. The well body 1 is round or square, and the well body 1 shown in the figure of the embodiment is round, so that the well body is convenient to manufacture and install.
The well body 1 comprises a top cover 5 and a base 6, wherein the top cover 5 is detachably connected to the well body 1; a pouring hole 15 is reserved in the outer side of the base 6 along the circumferential direction, and the foundation bolts are installed with the ground or a concrete bottom plate through the pouring hole 15 so that the well body 1 is fixed.
The well body 1, the top cover 5 and the base 6 form a closed cavity, namely a cut-off cavity 7; the pipe inner bottom elevation of the sewage intercepting pipe 3 is lower than the pipe inner bottom elevation of the water inlet pipe 2 and the overflow pipe 4, and the pipe inner bottom elevation of the water inlet pipe 2 is higher than the pipe inner bottom elevation of the overflow pipe 4, so that the sewage intercepting well is ensured to have better intercepting effect.
In addition, the relative positions of the water inlet pipe 2, the sewage intercepting pipe 3 and the overflow pipe 4 need to be adjusted according to the actual pipeline position and elevation. Under the prerequisite that does not influence the result of use, can also set up to other positions, for example cut dirty pipe 3 sets up in the well body 1 position that is close to the lower extreme, and inlet tube 2 and 4 coaxial and relative settings of overflow pipe cut dirty pipe 3 perpendicular to inlet tube 2 and the setting of overflow pipe 4.
According to the invention, the basket grid structure 8 is arranged in the well body 1 and at the position of the opening of the water inlet pipe 2 and is used for intercepting floating objects such as floating slag and garbage, so that water entering from the water inlet pipe 2 enters the intercepting cavity 7 after being pretreated by the basket grid structure 8, and further pollutants entering a natural water body are effectively reduced.
Specifically, as shown in fig. 4, the basket grid structure 8 is made of a composite material, and includes a mesh grid basket 81 and a pulling assembly, the mesh grid basket 81 is fixed inside the well body 1 through the pulling assembly, and the mesh grid basket 81 can be freely pulled out of the well body 1 through the pulling assembly to clean the filtered materials in the mesh grid basket 81.
More specifically, the pulling assembly comprises a guide rail 82, a hook 83 and a loop chain 84, wherein the guide rail 82 is arranged along the axial direction of the well body 1, and the mesh grid basket 81 is slidably connected on the guide rail 82 and is fixed with the hook 83 through the loop chain 84. Floaters such as scum and garbage are retained and temporarily stored in the mesh-shaped grill basket 81, and are periodically cleaned and maintained.
In addition, the grid mesh interval of the mesh-shaped grid basket 81 can be 5-10 cm, and the grid mesh interval can be correspondingly adjusted according to actual conditions.
In this embodiment, the present invention further comprises a sewage interception valve 9, wherein the sewage interception valve 9 is installed at the nozzle of the sewage interception pipe 3, and is located on the base 6 at the bottom of the interception cavity 7, and is used for controlling the amount of sewage intercepted to the sewage pipeline.
Specifically, the dirt intercepting valve 9 may be a hydraulic rotary flow-limiting valve, as shown in fig. 5, and the dirt intercepting valve 9 is made of stainless steel material as a whole, and includes a housing 91 and a connecting member. Wherein casing 91 is last to have seted up into water conservancy diversion mouth 92 and access hole 9393, is provided with guide plate 921 at water conservancy diversion mouth 92, is provided with access plate 931 on access hole 93, and access plate 931 can manually mention for maintain the maintenance to casing 91 inside.
More specifically, the housing 91 is of a volute-like configuration, forming a valve cavity within the housing 91. The connecting piece consists of a mounting plate 94 and a water outlet connecting cylinder 95, the mounting plate 94 is fixed on the inner wall of the well body 1 around the pipe orifice of the sewage interception pipe 3, so that the whole sewage interception valve 9 is communicated with the sewage interception pipe 3; the water outlet connecting cylinder 95 is connected with the casing 91 in an inclined manner, that is, the end surface of the water outlet connecting cylinder 95 connected with the casing 91 is an inclined surface.
When sewage in the intercepting cavity 7 enters the valve cavity through the water inlet diversion port 92, vortex dissipation kinetic energy is formed in the valve cavity by the flowing sewage, so that an air column is formed in the center of water flow, the outlet flow of the intercepting valve 9 is reduced, and the intercepted sewage amount can be effectively controlled.
And the water flow passes through the valve cavity in the form of gravity flow or vortex, dissipates the vortex through the water outlet connecting cylinder 95 and stabilizes the flow state, and then is conveyed to the sewage pipe through the sewage intercepting pipe 3.
In addition, it should be noted that the overall size and the spatial structure of the sewage interception valve 9 need to be designed according to the actual hydraulic conditions through hydraulic calculation.
The sewage interception valve 9 has simple structure, convenient installation, small occupied space, difficult blockage and simple operation and maintenance, and can achieve better economic benefit and environmental benefit; and the flow of the valve body is controlled by water power, no electric device or control is needed, and the operation is simple.
In this embodiment, the present invention further comprises an overflow valve 10, wherein the overflow valve 10 is installed at the nozzle position of the overflow pipe 4 and is communicated with the overflow pipe 4 for controlling the amount of overflow water passing through the overflow pipe 4.
Specifically, the overflow valve 10 may be a float flap valve, as shown in fig. 6, and includes a float 101 and a weir plate 103 connected to the float 101 through a bracket 102, and the bracket 102 is rotatably connected to the valve base 104, so that the float 101, the bracket 102 and the weir plate 103 can rotate freely as a whole.
The support 102 is rotatably connected to the valve base 104 through a rotating shaft, the rotating shaft is installed on the valve base 104, and the valve base 104 is fixedly installed on a side wall of the well body 1. The rotation of the weir plate 103 takes the rotating shaft as a base point, and the connection part of the bracket 102 and the rotating shaft is in sealing connection.
Wherein, the included angle between the weir plate 103 and the inner bottom of the overflow pipe 4 can realize the rotation within the range of 90 degrees and can stop at any position within the rotation angle. In actual operation, the position of the weir plate 103 at a certain moment is determined by the height difference between the liquid level inside the intercepting cavity 7 and the liquid level outside the overflow pipe 4, so that the weir plate 103 can realize opening, closing and adjusting the drainage quantity of the overflow pipe 4 under the driving of hydraulic liquid level, can effectively adjust and control the water quantity overflowing to a downstream channel, and can prevent clear water from flowing backwards.
On the basis of the above-described embodiment, as an alternative embodiment of the present invention, a confluence groove 11 is provided at the bottom of the intercepting chamber 7, i.e., the confluence groove 11 is located on the base 6. The confluence groove 11 is attached to the shape design of the sewage interception valve 9 and extends to the inner side wall of the well body 1 from the water inlet diversion port 92. The converging tank 11 is provided with a certain gradient, is higher in periphery and lower in middle, is in a pot bottom shape, namely the water inlet guide opening 92 is located at the lowest position of the converging tank 11 and is used for converging sewage, improving the flow velocity of the sewage and reducing the risk of silting and blocking.
On the basis of the above embodiment, as an optional implementation manner of the invention, a telescopic maintenance staircase 12 is further arranged inside the well body 1, and when manual inspection is needed, the telescopic maintenance staircase 12 can be opened to enter the well for inspection and clean the interception cavity 7.
On the basis of the above embodiment, as an optional implementation manner of the present invention, the top cover 5 is provided with a plurality of service holes 13 communicated with the intercepting chamber 7. After the vatch basin operation cycle, can open access hole 93, mention the netted grid basket 81 of hand-basket grid structure 8 along guide rail 82, clearance interception rubbish floater etc. when needs manual inspection, can open scalable maintenance staircase 12 through access hole 93, go into to inspect and clear up the vatch basin 7 in the well.
In addition, the top cover 5 is provided with an exhaust valve 14 for the toxic gas and the odor gas to escape. In this embodiment, a gas filtering device can be disposed on the exhaust valve 14 for toxic gas and odor gas to prevent the toxic gas or odor gas from directly exhausting into the air.
The invention provides a closure method of an integrated automatic closure well, which comprises the following steps:
in the present invention, the liquid level height in the shut-off chamber 7 is denoted as H, and the set liquid level height is denoted as H1And h2The liquid level height of the water body at the downstream of the overflow pipe 4 is marked as h;
wherein h is1Designing the liquid level of the dry-run sewage for the pipe section, namely the gravity flow h1Calculated by the dry flow sewage quantity and set for planningThe scope of counting is known to those skilled in the art and, therefore, will not be described in detail.
Wherein h is2The level of the overflow liquid is determined by the height of the weir plate of the overflow valve in the standing state, when the internal water level rises again, the weir plate rotates, and then the merged sewage overflows, namely the state of the step S3 is reached.
In addition, the set flow rate q1The amount of drought sewage is: namely the urban sewage amount in sunny days in the combined system pipeline system; and comprehensively determining the initial rainwater flow in consideration.
Set flow rate q2The method comprises the following steps of intercepting the sewage: after a catch basin is arranged on a combined drainage pipe canal, high-concentration rain and sewage mixed flow water is intercepted to a sewage main pipe, the residual rain water is discharged to a natural water body, and the designed flow q of the part of the combined sewage intercepted to the sewage main pipe2＝(n0+1)q1(ii) a Wherein n is0Is the cut-off multiple.
When sewage or rain sewage all get into hand-basket grid structure 8 through inlet tube 2, intercept floater such as dross, rubbish earlier, in the rain sewage got into interception chamber 7 after preliminary treatment, can produce following situation:
step S1: as shown in fig. 7, when the liquid level height H in the intercepting chamber 7 is less than the set liquid level height H1When is H<h1When the sewage is drained, the overflow valve 10 is closed, and the sewage and initial rainwater enter the sewage intercepting pipe 3 through the sewage intercepting valve 9 and are drained to a sewage pipeline;
step S2: as shown in fig. 8, when the liquid level height H in the intercepting chamber 7 is greater than the set liquid level height H1And is less than the set liquid level height h2When it is, i.e. h1<H<h2Then (c) is performed. The weir plate 103 of the overflow valve 10 is lifted to isolate the interception cavity 7 from the overflow pipe 4, the interception cavity 7 can accumulate sewage to a set regulation volume V, and the set flow q is set through the interception valve 91And discharging to a sewage pipe. At the moment, a vortex is formed in the sewage interception valve 9, and the vortex air cavity is gradually stable and can be controlled not to exceed the set flow q1The water quantity is continuously discharged to the sewage pipeline through the sewage interception pipe 3, and the sewage interception multiple can be effectively improved in the process;
the purpose of the storage volume V is to relieve the impact of the fluctuation of the upstream incoming water volume on the downstream sewage interception pipeline during rainfall, reduce overflow as much as possible and improve the sewage interception multiple. The regulation volume V needs to be calculated by considering the fluctuation condition of the initial rainwater amount through a model or empirical parameters and matching with the planning and designing requirements.
Step S3: when the liquid level height H in the intercepting chamber 7 exceeds the set liquid level height H, as shown in FIG. 92When the overflow valve 10 rotates along with the liquid level, the weir plate 103 rotates along with the liquid level and is flatly placed at the bottom of the overflow pipe 4, a large amount of rainwater is discharged to a downstream water body through the overflow pipe 4, and the flood discharge function is realized. At the moment, the sewage interception valve 9 does not exceed the set flow q2The water quantity is discharged to a sewage pipe;
step S4: as shown in fig. 10, when the liquid level H of the downstream water body of the overflow pipe 4 is greater than the liquid level H in the intercepting cavity 7, that is, H > H, the float 101 of the overflow valve 10 and the weir plate 103 are acted by the internal and external water levels together to gradually raise the weir plate 103, and the top height of the weir plate 103 is always higher than the liquid level H of the downstream water body, so that the intercepting cavity 7 is relatively isolated from the overflow pipe 4.
At the moment, the upstream water can still enter the interception cavity 7 through the water inlet pipe 2 and is limited by the vortex of the interception valve 9, so that the flow rate does not exceed the set flow q2Through intercepting dirty pipe 3 and discharging to sewage pipe to guarantee that the rivers of inlet tube 2 are unobstructed, so that upper reaches pipeline can not the harmony water, reduce the waterlogging risk.
Step S5: when the level H of the body of water downstream of the overflow pipe 4 has exceeded the height of the bottom of the overflow pipe 4, but not the level H in the shut-off chamber 7, as shown in FIG. 11, i.e. H<During H, the weir plate 103 receives inside and outside water level combined action, makes the height at weir plate 103 top be less than the liquid level height H in the interception chamber 7, and interception chamber 7 still communicates with overflow pipe 4 this moment, makes the rainwater in the interception chamber 7 still accessible overflow pipe 4 continue to discharge, does not influence the flood traveling function of upper reaches confluence system pipeline, cuts dirty valve 9 simultaneously with no more than setting for flow q2The water is continuously discharged to the sewage pipe.
The automatic intercepting well is an integrated structure, has the advantages of high integration, stable intercepting rate, simple construction, firmness, durability and convenience in maintenance and management, occupies small area and can effectively save civil construction cost.
In addition, the opening degrees of the sewage interception valve 9 and the overflow valve 10 are flexibly controlled by water level difference between the front and the back of the valves without electric control, so that the problem that the existing intelligent sewage interception well needs to be provided with a complex online monitoring system and an intelligent control system is effectively avoided, unattended operation can be realized, the operation and maintenance cost is effectively saved, and the intelligent sewage interception well is in accordance with green environmental protection concepts such as energy conservation, emission reduction, low-influence development and the like.
In addition, the invention adopts two valves with different structures and controlled by water power to control the flow of the sewage interception pipe 3 and the overflow pipe 4, and the two valves are automatically adjusted according to the water level condition of the valves, thereby realizing the functions of efficient sewage interception, high-precision control of the sewage interception amount, regulation and storage of initial rainwater, prevention of backflow phenomenon, reduction of waterlogging risk and the like.
On the other hand, the interception method can improve the interception multiple and the interception sewage concentration.
In addition, the bottom of the sewage interception cavity is provided with the confluence groove 11, so that the flow speed of sewage can be effectively improved when the upstream water flow is small, the deposition and hardening of solid particles such as silt, suspended matters and the like in the intercepting well are reduced, the operation stability of the sewage interception valve 9 and the overflow valve 10 is improved, and the maintenance and cleaning work is greatly reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An integrated automatic intercepting well is characterized by comprising a well body, and a water inlet pipe, a sewage intercepting pipe and an overflow pipe which are arranged on the well body;
the upper end of the well body is detachably connected with a well cover, the lower end of the well body is provided with a base, and the well body, the well cover and the base form a closed intercepting cavity;
the interception cavity is provided with a basket grating structure, a sewage interception valve and an overflow valve;
the basket grid structure is positioned at the position of a pipe orifice of the water inlet pipe;
the sewage interception valve is positioned at the position of the pipe orifice of the sewage interception pipe;
the overflow valve is positioned at the position of the orifice of the overflow pipe.
2. The integrated automatic intercepting well according to claim 1, wherein the basket grating structure comprises a mesh grating basket and a pulling assembly, the mesh grating basket is fixed by the pulling assembly and can be freely pulled out of the well body.
3. The integrated automatic vatch basin according to claim 2, wherein said pulling assembly comprises a guide rail, a hook and a loop chain, said guide rail is axially arranged along said basin body, said mesh grid basket is slidably connected to said guide rail and is fixed with said hook by said loop chain.
4. The integrated automatic intercepting well according to claim 1, wherein the intercepting valve comprises a housing and a connecting piece, wherein the connecting piece consists of a mounting plate and a water outlet connecting cylinder; the mounting panel is fixed in and cuts dirty pipe orifice department, go out the water connecting cylinder with the casing slope is connected.
5. The integrated automatic vatch basin of claim 4, wherein the housing is of a volute-like configuration such that water flow creates a vortex within the housing to dissipate kinetic energy; and a water inlet diversion port and an access hole are arranged on the shell.
6. The integrated automatic intercepting well according to claim 5, wherein a converging groove is formed at the bottom of the intercepting cavity, and the converging groove is matched with the appearance design of the sewage intercepting valve and is formed by extending the water inlet diversion port to the inner side wall of the well body.
7. The integrated automatic vatch basin of claim 1, wherein the overflow valve comprises a float, a weir plate, a bracket and a valve base, the float is connected with the weir plate through the bracket, and the bracket is rotatably connected with the valve base, so that the float, the bracket and the weir plate can integrally and freely rotate.
8. The integrated automatic intercepting well according to any one of claims 1 to 7, wherein a retractable service staircase is arranged inside the well body; the well lid is provided with a plurality of access holes and exhaust valves communicated with the intercepting cavity.
9. The intercepting method of the integrated automatic intercepting well is characterized by comprising the following steps:
step S1: when the liquid level height H in the interception cavity is less than the set liquid level height H1When the overflow valve is closed, dry flow sewage and initial rainwater enter the sewage intercepting pipe through the sewage intercepting valve and are discharged to a sewage pipeline;
step S2: when the liquid level height H in the interception cavity is larger than the set liquid level height H1And is less than the set liquid level height h2When the sewage is discharged, the weir plate of the overflow valve is lifted to separate the interception cavity from the overflow pipe, the interception cavity can accumulate the sewage to a set regulation volume V, and the sewage is discharged at a set flow q through the interception valve1Discharging to a sewage pipe; at the moment, a vortex is formed in the sewage interception valve, and the vortex air cavity is gradually stable so as not to exceed the set flow q1Continuously discharging the sewage to a sewage pipeline through a sewage interception pipe;
step S3: when the liquid level height H in the intercepting cavity exceeds the set liquid level height H2When the overflow valve rotates along with the height of the liquid level, the weir plate rotates along with the liquid level and is flatly placed at the bottom of the overflow pipe; at the moment, the sewage interception valve does not exceed the set flow q2Discharge of water quantityTo a sewage pipe;
step S4: when the liquid level height H of the downstream water body of the overflow pipe is greater than the liquid level height H in the interception cavity, the floating barrel of the overflow valve and the weir plate are acted by the internal and external water levels together to gradually lift the weir plate, the top height of the weir plate is higher than the liquid level height H of the downstream water body, and the interception cavity is ensured to be relatively isolated from the overflow pipe;
at the moment, the upstream water still can enter the interception cavity through the water inlet pipe and is limited by the vortex of the interception valve so as not to exceed the set flow q2Through the sewage interception pipe and discharged to the sewage pipeline;
step S5: when the liquid level height H of the downstream water body of the overflow pipe exceeds the pipe bottom height of the overflow pipe, but does not exceed the liquid level height H in the interception cavity, the weir plate is under the combined action of the internal and external water levels, the top of the weir plate is lower than the liquid level height H in the interception cavity, the interception cavity is still communicated with the overflow pipe at the moment, the rainwater in the interception cavity can be discharged continuously through the overflow pipe, and meanwhile, the interception valve is not more than the set flow q2The water is continuously discharged to the sewage pipe.
10. The method for intercepting fluid according to claim 9, wherein the flow rate q is set in steps S1 to S51The amount of drought sewage is; set flow rate q2To intercept the sewage flow.
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| CN114263254A (en) * | 2021-11-17 | 2022-04-01 | 中国一冶集团有限公司 | Backflow prevention device |
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