CN215483410U

CN215483410U - Drainage system based on current confluence system pipe network is reformed transform

Info

Publication number: CN215483410U
Application number: CN202120361341.7U
Authority: CN
Inventors: 周超
Original assignee: Wuhan Shengyu Drainage Systems Co Ltd
Current assignee: Wuhan Shengyu Smart Ecological Environmental Protection Co ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2022-01-11
Anticipated expiration: 2031-02-09

Abstract

The utility model provides a drainage system based on the reconstruction of the existing confluence pipe network, which comprises: the unit area and the district confluence main pipe, wherein the unit area comprises at least one sewage branch pipe, at least one rain inlet/rain water vertical pipe, a confluence branch pipe and a first pipe, the sewage branch pipe is communicated with the first pipe, the rain inlet/rain water vertical pipe is communicated with the confluence branch pipe, the first pipe is communicated with the confluence branch pipe or the district confluence main pipe, the first pipe is provided with a cut-off part, and the cut-off part is positioned at the downstream of the position where the sewage branch pipe and the first pipe are connected. In the utility model, the cell confluence main pipe is not reformed, and the problems of the confluence control pipe network are solved from the source.

Description

Drainage system based on current confluence system pipe network is reformed transform

Technical Field

The utility model belongs to the technical field of municipal drainage, and particularly relates to a drainage system based on the existing combined system pipe network transformation.

Background

Referring to fig. 1, a schematic diagram of an existing confluence pipe network is shown, where the confluence pipe network includes a cell confluence main pipe and a unit area, the unit area is provided with a confluence branch pipe, at least one sewage branch pipe, and at least one rain gap/rain water vertical pipe, the sewage branch pipe and the rain gap/rain water vertical pipe are both connected to the confluence branch pipe, in a sunny day, domestic sewage flowing out of the drainage vertical pipe flows into the confluence main pipe through the sewage branch pipe and enters the cell confluence main pipe, and in a rainy day, the domestic sewage flowing out of the drainage vertical pipe is mixed with rain water collected by the rain gap/rain water vertical pipe and then flows into the cell confluence main pipe through the confluence branch pipe. If all rainwater and sewage are sent into sewage treatment plant and are handled, sewage treatment plant's throughput is limited, another then pollutant concentration in later stage rainwater is not high, if send into sewage treatment plant and handle extravagant resource, consequently, reform transform current confluence system network among the prior art, set up reposition of redundant personnel well or vatch basin on the end of confluence branch pipe or district confluence person in charge, shunt fine day sewage and initial stage rainwater to sewage treatment plant through reposition of redundant personnel well or vatch basin, middle and later stage rainwater is shunted to natural water.

In the process of implementing the utility model, the utility model people find that the prior art has the following problems: because sewage discharge is the continuation in the sewage branch pipe, do not have direct relevance with the rainfall, during the rainy day, the continuous outflow domestic sewage of sewage branch pipe mixes with the rainwater, even middle and later stage rainwater also mixes a large amount of domestic sewage wherein, if discharge into natural water with this part sewage and middle and later stage rainwater together, will certainly lead to the fact natural water to pollute, if all send into sewage treatment plant, sewage treatment plant treatment pressure is great when the rainy day, consequently, no matter pipe network transformation or sewage treatment plant's cost of reforming transform are all very high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that in rainy days, sewage and rainwater are mixed and then are converged into a cell confluence main pipe, so that the technical defects of environmental pollution or high cost of transformation of a confluence system pipe network are caused.

In order to solve the technical problems, the utility model also provides a drainage system based on the existing combined pipe network reconstruction, which has the following two structural forms:

the first form: the system comprises: the system comprises a unit area and a cell confluence main pipe, wherein the unit area comprises at least one sewage branch pipe, at least one rain inlet/rain water vertical pipe, a confluence branch pipe and a first pipe, the sewage branch pipe is communicated with the first pipe, the rain inlet/rain water vertical pipe is communicated with the confluence branch pipe, the tail end of the first pipe is communicated with the confluence branch pipe or the cell confluence main pipe, the first pipe is provided with a cut-off part, and the cut-off part is positioned at the downstream of the connecting position of the sewage branch pipe and the first pipe;

the second form: the system comprises: the unit area and district confluence are responsible for, the unit area includes an at least sewage branch pipe, an at least inlet/outlet rainwater riser, confluence branch pipe and second pipe, sewage branch pipe with confluence branch pipe intercommunication, inlet/outlet rainwater riser with the second pipe intercommunication, the end of second pipe with confluence branch pipe or district confluence is responsible for the intercommunication, be provided with the closure portion on the confluence branch pipe, the closure portion is located sewage branch pipe with the low reaches of the position of connecing of confluence branch pipe, and is located the second pipe with confluence branch pipe or the upper reaches of the position of connecing of district confluence main pipe.

Optionally, still include the septic tank, the septic tank includes the cell body, sets up water inlet and delivery port on the cell body, and set up a plurality of baffles of cell body inside, the baffle is followed the water inlet extremely the direction of delivery port sets up at interval in proper order, be provided with the water hole on the baffle, the delivery port of septic tank is connected sewage branch pipe, just the play water position of delivery port is less than the position of intaking of water inlet.

Optionally, the water outlet position of the water passing hole arranged on the baffle plate close to the water outlet is lower than the water outlet position of the water outlet.

Optionally, the water outlet positions of the water through holes on all the baffles are located at the same horizontal height.

Optionally, still include and block the sediment board, block the sediment board set up in the water inlet with be close to water inlet department between the baffle, block the sediment board and follow cell body top downwardly extending is close to water inlet department the play water position in water hole is higher than on the baffle block the bottom reason of sediment board, the play water position of water inlet is higher than block the bottom reason of sediment board.

Optionally, the cut-off portion is selected from one of a weir, a gate, a valve, or a flexible cut-off device.

Has the advantages that:

the utility model provides a method for reconstructing a pipe network based on the existing confluence system, which comprises the steps of utilizing confluence branch pipes in the existing confluence system community to newly build a pipeline, connecting sewage branch pipes to the pipeline, still connecting a rainwater port/a rainwater vertical pipe with the original confluence branch pipes, and arranging a cut-off part at the tail end of the newly built pipeline; or, newly building a pipeline, connecting the rain water port/the rain water vertical pipe with the pipeline, connecting the sewage branch pipe with the original confluence branch pipe, arranging a cut-off part at the tail end of the confluence branch pipe, and positioning the cut-off part at the upstream of the newly built pipeline connected with the confluence branch pipe or the municipal confluence shut-off pipe. This can be realized, when fine, open the sewage that the portion sewage branch pipe that dams flows out and get into the district confluence person in charge, when rainy day, close the portion sewage branch pipe that dams and flow out and temporarily store in newly-built pipeline or confluence branch pipe, guarantee that all rainwater do not mix sewage, flow into the district confluence person in charge, rainwater and sewage have been avoided gathering completely, no matter be newly-built pipeline or former confluence branch pipe and sewage union coupling, the homoenergetic is used for carrying and saving this part pipeline, need not to build storage facility, also need not be responsible for reforming transform the district confluence, not only can the cost be practiced thrift, improve the construction and reform transform speed, under the condition that utilizes land area less, realize the storage transportation to sewage, the source is from the problem that the confluence system pipe network exists.

The utility model provides a drainage system based on the existing combined pipe network reconstruction, which has two forms of systems, wherein the form I is as follows: the system comprises a unit area and a community confluence main pipe, wherein a sewage branch pipe, a rainwater inlet/rainwater vertical pipe, a confluence branch pipe and a first pipe are arranged in the unit area, the sewage branch pipe is connected with the first pipe, the rainwater inlet/rainwater vertical pipe is connected with the confluence branch pipe, a cut-off part is arranged on the first pipe, and the tail end of the first pipe is connected with the confluence branch pipe or the community confluence main pipe; the second form: the system comprises a unit area and a cell confluence main pipe, wherein a sewage branch pipe, a rain water inlet/rain water vertical pipe, a confluence branch pipe and a second pipe are arranged in the unit area, the sewage branch pipe is connected with the confluence branch pipe, the rain water inlet/rain water vertical pipe is connected with the second pipe, the second pipe is connected into the confluence branch pipe or the cell confluence main pipe, a cut-off part is arranged on the confluence branch pipe and is positioned at the upstream of the joint point of the second pipe, no matter the first form or the second form is adopted, the cut-off part is opened in sunny days, domestic sewage flows into the cell confluence main pipe from the first pipe/confluence branch pipe, the cut-off part is closed in rainy days, the domestic sewage temporarily exists in the first pipe/confluence branch pipe, the rainwater flowing out from the rain water inlet/rain water vertical pipe flows into the cell confluence main pipe, the cell confluence main pipe is utilized in a staggered peak mode, the domestic sewage is ensured not to be mixed with the rainwater, and meanwhile, the temporary accommodation of the domestic sewage does not need to be additionally built, utilize the pipeline can satisfy the function of sewage transportation and temporary storage, under the condition that utilizes land area less, realize the storage transportation to sewage, solve the problem that the confluence system pipe network exists from the source.

The above description of the conventional combined pipe network-based modification method and drainage system according to the present invention is only an overview of the technical solution of the present invention, and the present invention can be implemented in accordance with the content of the description in order to make the technical means of the present invention more clearly understood, and the above and other objects, features, and advantages of the present invention will be more clearly understood.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic representation of the prior art of the present invention;

FIG. 2 is a schematic view of a first form of the drainage system of the present invention;

FIG. 3 is a schematic view of a second form of the drainage system of the present invention;

FIG. 4 is a schematic structural view of a septic tank of the present invention;

fig. 5 is a schematic structural view of a septic tank provided with a slag trap in the second embodiment of the utility model.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention; the "and/or" keyword referred to in this embodiment represents sum or two cases, in other words, a and/or B mentioned in the embodiment of the present invention represents two cases of a and B, A or B, and describes three states where a and B exist, such as a and/or B, which represents: only A does not include B; only B does not include A; including A and B.

Also, in embodiments of the utility model where an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When one component is said to be "in communication with" another component, it can be directly connected to the other component or intervening components may be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the present invention.

Before describing the present invention, the following explanation is made for terms and terms related to the present invention, so as to enable those skilled in the art to understand the present invention more clearly and clearly, and further to support the technical problems to be solved and the technical effects to be achieved, and before describing the present invention:

the unit area 1 refers to an area where domestic sewage is generated by functional units such as each unit building, a market, a vegetable market and a hospital, and the functional units convey sewage and rainwater to the cell confluence main pipe 2, and for those skilled in the art, the unit area 1 can be a virtually defined area or can actually exist.

A confluence branch pipe 12, which is a pipe for transporting rainwater, sewage, or mixed water of rainwater and sewage in the unit area 1; a sewage branch pipe 10, which is a facility for transporting sewage in the unit area 1; a gutter inlet/rainwater stand pipe 11 which is a facility for conveying rainwater to the confluence branch pipe 12 in the unit area 1; the district confluence main pipe 2 is a pipeline which is connected into a municipal pipeline and used for conveying rainwater or sewage or mixed water of the rainwater and the sewage.

Downstream, it means that a reference position is set, from which the water flow passes, the area passing before the reference position is upstream, and the area passing after the reference position is downstream.

According to whether the rainfall behavior occurs or not, the periods related in the utility model can be divided into sunny days and rainy days, namely a rainfall period and a non-rainfall period, wherein the rainfall period refers to the period of the rainfall behavior and can be understood as the rainy day; the non-rainfall period is a period opposite to the rainfall period, and is a period in which no rainfall action occurs, and may be understood as a sunny day. Or according to the size of rainfall, the period referred in the utility model can be divided into a rainfall period and a non-rainfall period, wherein the rainfall period refers to the period when the rainfall reaches a certain rainfall threshold value and can be understood as the period when the rainfall is slightly larger; the non-rainfall period is a period opposite to the rainfall period, and refers to a period when the rainfall is less than the rainfall threshold, and may be understood as a period when there is no rainfall or when the rainfall is small.

In the utility model, the specific mode of the rainfall period and the non-rainfall period is determined, and the determination is not limited, and can be selected and determined according to the actual operation requirement; in other words, any of the above-described ways of determining periods of rainfall and periods of non-rainfall is suitable for use in the present invention. However, the present invention is applicable to both the determination method of whether rainfall occurs and the determination method of whether the rainfall reaches a certain rainfall threshold, as long as the determination method of whether rainfall occurs or whether the rainfall reaches a certain rainfall threshold can be achieved.

Of course, it should be understood by those skilled in the art that since certain errors are allowed in the drainage process of rainwater and/or sewage in the actual operation process, certain errors may exist in the specific division of each period, for example, there is an imprecise division node between the initial rain and the middle and late rain, which results in the early rain mixed with the middle and late rain, or the initial rain/middle and late rain mixed with a small amount of sewage; the operation influence caused by the error does not affect the implementation effect of the whole technical scheme of the utility model, and can be ignored, so that the operation influence is not considered to be in the protection range of the utility model.

Example one

Referring to fig. 1 specifically, a method for modifying an existing combined pipe network is provided for an embodiment of the present invention, where the existing combined pipe network includes a unit area 1 and a cell combined main pipe 2;

the unit area 1 comprises at least one sewage branch pipe 10, at least one rainwater inlet/rainwater vertical pipe 11 and a confluence branch pipe 12, wherein the sewage branch pipe 10 is communicated with the confluence branch pipe 12, the rainwater inlet/rainwater vertical pipe 11 is communicated with the confluence branch pipe 12, and the tail end of the confluence branch pipe 12 is connected with a community confluence main pipe 2, wherein the sewage branch pipe 10 and the rainwater inlet/rainwater vertical pipe 11 are both connected with the confluence branch pipe 12, but the sewage branch pipe 10 and the rainwater inlet/rainwater vertical pipe 11 are not directly communicated;

based on the above existing pipe network structure, referring to fig. 2 and fig. 3, the modification method of this embodiment has the following two methods:

the method comprises the following steps: disconnecting the communication part of the sewage branch pipe 10 and the confluence branch pipe 12, building a new pipeline as a first pipe 13 in the unit area 1, connecting the sewage branch pipe 10 into the first pipe 13 and communicating with the first pipe 13, connecting the tail end of the first pipe 13 into the confluence branch pipe 12 or the cell confluence main pipe 2, arranging a cut-off part 3 on the first pipe 13, wherein the cut-off part 3 is positioned at the downstream of the first pipe 13 into which the sewage branch pipe 10 converges, preferably, arranging the cut-off part 3 at the tail end of the first pipe 13, opening the cut-off part 3 when in a sunny day, conveying domestic sewage generated in the unit area 1 by the first pipe 13, closing the cut-off part 3 when in a rainy day, storing the domestic sewage generated in the unit area 1 by the first pipe 13, and flowing rainwater flowing out from the rainwater port/rainwater vertical pipe 11 into the cell confluence main pipe through the confluence branch pipe 12;

the second method comprises the following steps: the communication part of the rain water inlet/rain water vertical pipe 11 and the confluence branch pipe 12 is cut off, a pipeline is newly built in the unit area 1 to be used as a second pipe 14, the rain water inlet/rain water vertical pipe 11 is connected into the second pipe 14 and is communicated with the second pipe 14, the merging branch pipe 12 is provided with a cut-off portion 3, and preferably, the cut-off portion 3 is provided at a position near the distal end of the merging branch pipe 12, the cut-off portion 3 is located downstream of the merging branch pipe 12 of the sewage branch pipes 10, and is located upstream of the connecting position of the second pipe 14 and the branch confluence pipe 12 or the main community confluence pipe 2, the end of the second pipe 14 is connected to the branch confluence pipe 12 or the main community confluence pipe 2 downstream of the cut-off part 3, the cut-off part 3 is opened in sunny days, when the merging branch pipe 12 conveys the domestic sewage generated in the unit area 1 and the closure part 3 is closed in rainy days, the merging branch pipe 12 stores the domestic sewage generated in the unit area 1, and the rainwater flowing out of the rainwater inlet/rainwater stand pipe 11 flows into the community merging main pipe through the second pipe 14.

In the embodiment, no matter the method I or the method II is adopted for pipe network reconstruction, the confluence branch pipe 12 in the unit area 1 is utilized, only a new pipeline is needed, the engineering quantity is small, the construction cost is high, and the limited area in the unit area 1 is fully utilized. In a fine day, the cut-off part 3 is opened, sewage flowing out of the sewage branch pipes 10 is conveyed to the community confluence main pipe 2, in a rainy day, the cut-off part 3 is closed, the domestic sewage flowing out of the sewage branch pipes 10 temporarily exists in the first pipe 13 in the method for the first time, the domestic sewage temporarily exists in the confluence branch pipes 12 in the method for the second time, rainwater gathered by the rainwater inlet/rainwater stand pipe 11 is conveyed to the community confluence main pipe 2, and after the fine day, the cut-off part 3 is opened again, and the temporarily-stored domestic sewage is conveyed to the community confluence main pipe 2. The district confluence is responsible for 2 and all is domestic sewage that carry in the pipe, and the district confluence is responsible for 2 and all is the rainwater of carrying in the pipe in the rainy day, need not to be responsible for 2 to the district confluence and reforms transform, only utilizes the pipeline in the unit area can satisfy the function of sewage transportation and keeping in, under the condition that utilizes land area less, realizes the storage transportation to sewage, has avoided rainwater and domestic sewage to mix from the source, solves the problem that confluence system pipe network exists from the source.

Further, in this embodiment, when the unit region 1 is further provided with a septic tank 4, the septic tank 4 includes a tank body 40, a water inlet and a water outlet provided on the tank body 40, and a plurality of baffles 43 provided inside the tank body 40, the baffles 43 are sequentially arranged at intervals from the water inlet to the water outlet, and water passing holes are provided on the baffles 43;

still including reforming transform septic tank 4, specifically as follows:

and plugging the original water outlet of the septic tank 4, and arranging a new water outlet, wherein the horizontal height of the new water outlet is lower than that of the original water outlet. The domestic sewage that the house riser in the unit area 1 flowed out in this embodiment flows out from sewage branch pipe 10 again through septic tank 4, reduces the play water position of septic tank 4, and when rainy day, after cut-off portion 3 closed, can utilize the space in some septic tank 4 to keep in sewage, the facility in the make full use of unit area 1 increases the sewage memory space, reduces sewage and spills over the risk, and is further, reduces the construction and reforms transform the cost.

Furthermore, in this embodiment, at least the original water through hole of the baffle plate near the water outlet is plugged, and a new water through hole is formed, wherein the horizontal height of the new water through hole is lower than that of the new water outlet. Wherein, the level height in new water hole of crossing is less than the level height of new delivery port, and the pipe top elevation in new water hole of crossing is less than the socle elevation of new delivery port promptly, and baffle 43 in the septic tank 4 still has the function of pushing off the sediment, avoids during rubbish in the domestic sewage gets into the pipeline of low reaches, regularly uses the suction sewer car to clear up the rubbish in the septic tank 4, convenient maintenance, and the transformation is with low costs. By lowering the water outlet position of the water through holes of the baffle 43, the space for storing sewage in the septic tank 4 is further increased. Preferably, if the septic tank 4 in this embodiment is provided with two baffles, the new water through holes of the two baffles 43 can be arranged at the same level, and the level of all the new water through holes is lower than the level of the new water outlet of the septic tank 4, so that the storage space of the septic tank 4 is utilized to the maximum extent, and the baffles 43 have the functions of blocking slag and pushing slag. The space and the pipeline space in the septic tank 4 are utilized to temporarily store sewage in the embodiment, the space in the unit area 1 is fully utilized, the transformation cost is low, and the construction period is short.

Further, in order to safely and reliably store and deliver water, the pipe diameter of the pipeline needs to be designed when the pipeline is newly built, and the pipe diameter of the first pipe 13 in this embodiment is designed according to the domestic sewage amount of the catchment area of the unit area 1 collected by the first pipe, which can be specifically referred to "design specification for outdoor drainage" (2011 edition) (national standard GB50014-2006 of the people's republic of china) (joint release of the ministry of construction of the people's republic of china and the national quality supervision and detection and immunity center of the people's republic of china, china planning and publishing agency). The pipe diameter of the second pipe 14 is designed according to the rainfall capacity of the catchment area of the unit area 1 collected by the second pipe, which can be specifically referred to as "design specification for outdoor drainage" (2011 edition) (national standards of the people's republic of china GB50014-2006) (ministry of construction of the people's republic of china and the national quality supervision and testing of the people's republic of china general immunity bureau, china planning and publishing agency).

Preferably, in the present embodiment, the first pipe 13 is connected to the merging branch pipe 12 or the second pipe 14 is connected to the merging branch pipe 12 through the manhole, and this embodiment only provides a feasible solution, and the specific connection means is not specifically limited in this embodiment.

Preferably, the cut-off part 3 in this embodiment may be a gate, a weir gate, a flexible cut-off device or the like installed in a well structure such as an installation well, or may be a flexible cut-off device directly inserted into a pipeline, and it is within the scope of the present invention for those skilled in the art to realize the on/off of the water flow at the position of the cut-off part 3.

Example two

Referring to fig. 2 to 5, the second embodiment provides a drainage system based on the existing combined pipe network, which has the following two structural forms:

the first form: the system comprises: a unit area 1 and a cell confluence main pipe 2, wherein the unit area 1 comprises at least one sewage branch pipe 10, at least one rain inlet/rain water vertical pipe 11, a confluence branch pipe 12 and a first pipe 13, the sewage branch pipe 10 is communicated with the first pipe 13, the rain inlet/rain water vertical pipe 11 is communicated with the confluence branch pipe 12, the tail end of the first pipe 13 is communicated with the confluence branch pipe 12 or the cell confluence main pipe 2, the first pipe 13 is provided with a cut-off part 3, and the cut-off part 3 is positioned at the downstream of the connecting position of the sewage branch pipe 10 and the confluence branch pipe 12;

the second form: the system comprises: unit area 1 and district confluence main pipe 2, unit area 1 includes at least one sewage branch pipe 10, at least one inlet/outlet/rainwater riser 11, confluence branch pipe 12 and second pipe 14, sewage branch pipe 10 communicates with confluence branch pipe 12, inlet/outlet/rainwater riser 11 communicates with second pipe 14, the end of second pipe 14 communicates with confluence branch pipe 12 or district confluence main pipe 2, be provided with closure part 3 on confluence branch pipe 12, closure part 3 is located the low reaches of the access position of sewage branch pipe 10 and confluence branch pipe 12, and is located the upper reaches of the access position of second pipe 14 and confluence branch pipe 12 or district confluence main pipe 2.

In the first or second embodiment, the cut-off part 3 is closed in rainy days to temporarily store domestic sewage, wherein the first pipe 13 in the first embodiment or the branch merging pipe 12 in the second embodiment combines the functions of sewage transportation and sewage storage, rainwater is not mixed with domestic sewage after temporary storage of sewage, rainwater transportation of the main merging pipe 2 in rainy days is ensured, the cut-off part 3 is opened in sunny days, no rainwater exists in the unit area 1, rainwater is not mixed with domestic sewage, the main merging pipe 3 in the small area conveys sewage, the problem of sewage and rainwater mixing is solved from the source, the main merging pipe 2 in the small area is not required to be transformed into a flow dividing and pipe network, the first pipe/branch merging pipe in the unit area 1 conveys sewage and can also store sewage, a sewage storage facility is not required to be built, sewage and rainwater can be transported in the main merging pipe 2 in the same small area in a staggered way, the transformation cost is low, and the water body treatment effect is good.

Further, the first pipe 13 is arranged in parallel with the confluence main pipe 12, an inspection well is arranged on the first pipe 13, preferably, the inspection well is arranged at one end of the first pipe 13 close to the community confluence main pipe 2, the first pipe 13 is connected to any position along the confluence main pipe 12 through the inspection well, preferably, the connection confluence main pipe 12 is close to one end of the community confluence main pipe 2, the domestic sewage is reduced to pass through the confluence main pipe 12, a cut-off portion 3 is provided at the end of the first pipe 13, and the cut-off portion 3 is located downstream of the locations where all the sewage branch pipes 10 are connected, when the cut-off portion 3 is closed, it is ensured that all the domestic sewage flowing out of the sewage branch pipes 10 is stored in the first pipe 13, the pipe network in the unit area 1 is simple in structure, the first pipe 13 has the functions of sewage conveying and sewage storage, a sewage containing facility does not need to be built, the space in the unit area 1 is fully utilized, and the reconstruction construction cost is low.

Further, the second pipe 14 is arranged in parallel with the confluence branch pipe 12, the sewage branch pipes 10 are respectively connected to the confluence branch pipe 12 through inspection wells, one end of the confluence branch pipe 12 close to the district confluence main pipe 2 is provided with an inspection well, the inspection well is provided with a sewage inlet, a rainwater inlet and a well water outlet, the sewage inlet is connected with the confluence branch pipe 12 at the upper part, the rainwater inlet is connected with the second pipe 14, the well water outlet is connected with the confluence branch pipe 12 at the lower part or the district confluence main pipe 2 at the lower part, the closure part 3 is arranged at one side of the inspection well close to the sewage inlet and used for plugging the sewage inlet, and the rainwater inlet is positioned at the lower part of the closure part 3. When the damming portion 3 was closed, guaranteed that all sewage branch pipe 10 outflow domestic sewage all stored in confluence branch pipe 12, the pipe network simple structure in the unit area 1, confluence branch pipe 12 had taken into account sewage transport and sewage storage's function, need not to build sewage and accesss the facility, the space in the make full use of unit area 1, construction cost is low.

Preferably, the first pipe 13 and the second pipe 14 in this embodiment may be newly built pipes or may be modified from the existing pipes in the unit area 1. In addition, the first pipe 13 and the second pipe 14 may be any one of a pipeline, a pipe culvert, a box culvert, and an irrigation canal.

Further, as shown in fig. 4 and 5, the drainage system in the second embodiment further includes a septic tank 4, the septic tank 4 includes a tank body 40, a water inlet 41 and a water outlet 42 provided on the tank body 40, and a plurality of baffles 43 provided inside the tank body 40, the baffles 43 are sequentially arranged at intervals from the direction from the water inlet 41 to the water outlet 42, water through holes 44 are provided on the baffles 43, the water outlet 42 of the septic tank 4 is connected with the sewage branch pipe 10, and the water outlet position of the water outlet 42 is lower than the water inlet position of the water inlet 41. When the cut-off portion 3 is closed, can utilize some space storage domestic sewage in the septic tank 4, baffle 43 in the septic tank 4 can block some rubbish pollutants and flow into the pipeline of low reaches, and rubbish deposit is in baffle 43 front side, and the later stage uses the cleaning vehicle regularly to clean septic tank 4 can.

Further, as shown in fig. 4, which is a schematic structural diagram of the septic tank in this embodiment, two baffles 43 are disposed in the septic tank 4 in this embodiment, the two baffles 43 are disposed in the tank body 40 at intervals, the space in the tank body 40 is divided into a plurality of water passing spaces, the water passing spaces from the water inlet 41 to the water outlet 42 are a first-stage water passing area, a second-stage water passing area and a third-stage water passing area in sequence, and a water outlet position of a water passing hole 44 disposed on the baffle 43 near the water outlet 42 is lower than a water outlet position of the water outlet 42, that is, a horizontal line where a pipe top elevation of the water passing hole 44 is located is lower than a horizontal line where a pipe bottom elevation of the water outlet 42 is located. The space that can store sewage in second level crosses water district and the third level and crosses water district has further been increased, and baffle 43 in the septic tank 4 can block during partly rubbish pollutant flows into the pipeline of low reaches, uses the each water district of crossing of cleaning vehicle periodic cleaning septic tank 4.

Further preferably, in the second embodiment, the water outlet positions of the water through holes 44 on all the baffles 43 are set at the same horizontal height. The septic tank 4 is further enlarged for a storage space.

Further, as shown in fig. 5, in order to show the schematic structural diagram of the septic tank provided with the slag trap in this embodiment, the septic tank in this embodiment further includes a slag trap 45, the slag trap 45 is disposed between the water inlet 41 and the baffle 43 near the water inlet 41, the slag trap 45 extends downward from the top of the tank body 40, the pipe bottoms of the water holes 44 on the water inlet 41 and the baffle 43 near the water inlet 41 are higher than the lower edge of the slag trap 45, preferably, the water inlet 41 of the septic tank 4 is disposed near the top of the tank body 40, and the water outlet position of the water holes 44 on the baffle 43 near the water inlet 41 is at the same level as the water outlet position of the water inlet 41. All the garbage is intercepted in the first-stage water passing area through the slag blocking plate 45, and only the first-stage water passing area needs to be cleaned, so that the septic tank 4 is convenient to maintain.

Preferably, the cut-off portion 3 in the present embodiment is selected from one of a weir, a gate, a valve or a flexible cut-off device.

Finally, it should be noted that while the preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model. It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the utility model. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims

1. A drainage system based on current confluence tubulation transformation, its characterized in that has following two kinds of structural style:

2. The drainage system of claim 1, further comprising a septic tank, wherein the septic tank comprises a tank body, a water inlet and a water outlet opened on the tank body, and a plurality of baffles arranged inside the tank body, the baffles are arranged at intervals in the direction from the water inlet to the water outlet, water through holes are arranged on the baffles, the water outlet of the septic tank is connected with the sewage branch pipes, and the water outlet position of the water outlet is lower than the water inlet position of the water inlet.

3. The drainage system based on the transformation of the existing combined pipe network as claimed in claim 2, wherein: the water outlet position of the water passing hole arranged on the baffle close to the water outlet is lower than the water outlet position of the water outlet.

4. A drainage system based on the reconstruction of an existing combined pipe network as claimed in claim 3, wherein: the water outlet positions of the water passing holes on all the baffles are positioned at the same horizontal height.

5. The drainage system based on the transformation of the existing confluence pipe network as claimed in claim 3, further comprising a slag trap plate, wherein the slag trap plate is arranged between the water inlet and the baffle near the water inlet, the slag trap plate extends downwards from the top of the tank body, the water outlet position of the water through holes on the baffle near the water inlet is higher than the bottom edge of the slag trap plate, and the water outlet position of the water inlet is higher than the bottom edge of the slag trap plate.

6. The drainage system retrofitted to an existing flow network according to claim 1, wherein said cut-off portion is selected from the group consisting of a weir, a gate, a valve, and a flexible cut-off device.