CN202689171U - Intercepting well for intercepting initial rainwater source - Google Patents

Intercepting well for intercepting initial rainwater source Download PDF

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Publication number
CN202689171U
CN202689171U CN 201220353939 CN201220353939U CN202689171U CN 202689171 U CN202689171 U CN 202689171U CN 201220353939 CN201220353939 CN 201220353939 CN 201220353939 U CN201220353939 U CN 201220353939U CN 202689171 U CN202689171 U CN 202689171U
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CN
China
Prior art keywords
well
catchpit
rainwater
intercepting
early
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Withdrawn - After Issue
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CN 201220353939
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Chinese (zh)
Inventor
姜文超
樊晓晨
吕念南
张连强
梁团团
吉娜
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Chongqing University
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Chongqing University
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Priority to CN 201220353939 priority Critical patent/CN202689171U/en
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Withdrawn - After Issue legal-status Critical Current
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Abstract

The utility model relates to an intercepting well for intercepting an initial rainwater source. A clapboard which can be opened and closed is arranged in the intercepting well and divides the intercepting well into an upper layer and a lower layer; and an intercepting pipe directly connected with a rainwater outlet connecting pipe is connected to the lower layer of the intercepting well, so that intercepting control over initial rainwater is realized. Three forms are adopted; according to the first form, the intercepting pipe is directly connected with the rainwater outlet connecting pipe, so that continuous on-line interception is realized; according to the second form, a floating ball valve liquid level control device and a clean rainwater overflow device are arranged in the upper layer of the clapboard of the intercepting well on the basis of the first form, so that medium clean rainwater overflows, and safety is improved; and according to the third form, an automatic opening and closing device is arranged on the rainwater outlet connecting pipe on the basis of the second form, so that medium and late rainwater enters a rainwater pipeline. The intercepting pipe of the intercepting well is directly connected with one or more rainwater outlet connecting pipes, so that source control over initial runoff pollution is realized.

Description

A kind of catchpit that is dammed in the early-stage rainwater source
Technical field
The utility model belongs to the urban drainage system, and environmental protection technical field is specifically related to the catchpit in city or draining field, residential quarter.
Background technology
Catchpit is basic, the crucial ancillary structure of in the urban drainage system, the early-stage rainwater of heavy contamination can be used to dam, so that the recycling of middle and later periods clean rainwater or directly enter water body, reduce on the impact of municipal sewage plant with on the impact of environment.
At present, the urban drainage field mainly contains combined system and two kinds of main drainage system forms of segregation system, the former discharges rainwater and sewage in the same pipe duct, the latter adopts two pipe ducts to carry respectively and discharge in rainwater and sewage, regulation is except the few arid area of amount of precipitation in China's " Code for design of outdoor sewerage engineering ", and the drainage system in newly-built area should adopt segregation system.But still there are some problems in separated drainage system, is mainly manifested in the control aspect to the early-stage rainwater of heavy contamination.In view of all there are some problems in actual applications in two kinds of drainage systems, for overcoming the deficiency of existing draining system, prior art proposes a kind of drainage system that is referred to as the shutoff type segregation system, this drainage system is that primary rainwater closure is entered Wastewater Treatment Plant and processes to the sewage pipe duct is laggard, the middle and later periods clean rainwater through Storm Sewer System directly discharging or collect after realize recycling.And the early-stage rainwater of the heavy contamination of how can damming better make it to enter urban sewage pipe and finally after Wastewater Treatment Plant processes discharging be problem demanding prompt solution in the shutoff type separate flow system, namely how to realize the optimum control to early-stage rainwater.
Rainfall runoff major pollutants (SS, COD, NH3-N, TN, TP etc.) concentration to natural rainwater, roofing, road surface is carried out statistical analysis with a large amount of monitored data of rainfall duration variation, research has drawn the rainfall runoff source pollutant Wash-off Model of exponential form, but increase (increase of catchment area) along with the inlet for stom water number, the downward trend of pollutant levels is gradually slow, can play the effect that better minimizing is polluted so carry out the control of early-stage rainwater from the source, namely can reach best control effect with the minimum amount of damming.Relevant research is discussed respectively each factor to the impact of first flush effects by model, and obtain as drawing a conclusion: first flush is more stable in the source, and therefore, the efficient of source decentralised control generally will be higher than the centralized Control on the pipeline.
Summary of the invention
The defective that exists in order to overcome prior art, the utility model proposes a kind of catchpit that is dammed in the early-stage rainwater source, it is applied in the combined flow system system, wherein intercepting sewer directly is connected with the inlet for stom water tube connector, by some control measure the early-stage rainwater in the rainfall is dammed efficiently to sewage conduct, reach the purpose of polluting from source control Initial Runoff, clean rainwater directly entered water body or collected the rear recycling of realizing rainwater by the segregation system rain pipe middle and later periods.
The technical solution of the utility model is as follows:
A kind of early-stage rainwater source catchpit, this catchpit has well body and well lid, be provided with horizontal able to turn on or off central dividing plate in the well body, central dividing plate is divided into catchpit two-layer up and down, lower floor's well is used for connecting the sewage pipe duct, the upper strata well is used for connecting Storm Sewer System, improvement of the present utility model is: the close terminal position at the inlet for stom water tube connector that is communicated with the upper strata well is connected with one or more primary rainwater closure pipe, the terminal lower floor's well that directly connects catchpit of intercepting sewer, the design of this primary rainwater closure pipe, spill etc. when producing surface runoff to water at precipitation or road, less but the early-stage rainwater of heavy contamination of the down-off of damming and flow velocity, make it to enter by intercepting sewer the lower floor of catchpit, enter sewage conduct, and for flow and flow velocity larger mid-term rainwater major part fall into the upper strata of catchpit and enter storm sewer, directly enter water body or collect after realize its recycling.
Therefore, surface runoff and sewage layering are passed through in the time of so both can having realized surface runoff, can realize again the control of damming to early-stage rainwater.Be provided with ventilating pipe on the dividing plate, be communicated with the two-layer up and down of manhole, to realize bilevel connection, guarantee normal ventilation and the safe operation of lower floor.For able to turn on or off intermediate interlayer, can adopt whole movable starting and stopping type structure, or at interlayer able to turn on or off movable part (opening and closing cover plate such as activity) is set, hold the space that the service work personnel pass through to guarantee that it has.
Further, be designed with the structure of damming on described primary rainwater closure pipe top with inlet for stom water tube connector junction, this structure of damming is infundibulate, the early-stage rainwater of such design when low discharge rill speed can drop and enter this intercepting sewer, and oxygen enrichment effect and hydraulics all compare to other forms outstanding advantage.
The well space, upper strata of described catchpit is separated out an overflow control room by straight wall, top, overflow control room is communicated with the inlet for stom water tube connector, the bottom is communicated with the lower floor well by discharge orifice, is provided with the cleaning stormwater overflow hole that is communicated with another part space of upper strata well in the certain altitude position of the straight wall in overflow control room.
This catchpit is compared with existing catchpit, has the following advantages:
The primary rainwater closure pipe of this catchpit directly is connected with the inlet for stom water tube connector, can be implemented in source efficiently damming to early-stage rainwater, significantly cut down the just polluting effect of rain runoff, reduced the impact to Sewage Plant, realize to a certain extent the peak clipping effect to rainfall, simultaneously so that the caliber of rain pipe slightly reduce.And compare with existing separated drainage system, can significantly reduce the quantity of manhole in the whole drainage system, reduce cost of investment and the later stage operation and maintenance cost of drainage pipeline networks, minimizing takies the space, street, reduce complexity that all kinds of pipeline wells in intersection arrange and operation maintenance to the impact of traffic, the sewage in the catchpit can not overflow and leak into water body and produce overflow water and pollute simultaneously.
Description of drawings
Fig. 1 is that intercepting sewer directly is connected with inlet for stom water tube connector lower end, and without any the floor map of the early-stage rainwater source catchpit of other control measure; (realize that consistently online dams, and operational management being convenient)
Fig. 2 is provided with the float valve fluid level control device, the catchpit floor map of clean rainwater overflow mechanism and discharge orifice in the upper strata of catchpit dividing plate; (realize the overflow of clean rainwater in mid-term, improve safety)
Fig. 3 is on the basis of Fig. 2, is provided with automatic opening-closing on the top of intercepting sewer, and the discharge orifice position is than 2 floor map that the catchpit of adjustment arranged; (realizing that the middle and later periods rainwater all enters storm sewer)
Among the figure: 1 catchpit upper strata well; 2 central dividing plates; 3 catchpit lower floor wells; 4 ventilating pipes; 5 inlet for stom water tube connectors; 6 primary rainwater closure devices; 7 primary rainwater closure pipes; 8 cleaning stormwater overflow holes; 9 float valve mechanisms; 10 discharge orifices; 11 automatic opening-closings; 12 well lids; 13 well bodies; 14 preliminary shafts; 15 helpers; 16 overflow control rooms.
The specific embodiment
Embodiment 1, referring to Fig. 1 and Fig. 2, Fig. 3:
As seen from the figure, this catchpit mainly is comprised of well lid 12, well body 13, ventilating pipe 4, preliminary shaft 14, helper 15, central dividing plate 2, primary rainwater closure pipe 7 etc.The well body can be designed to circle or rectangle as required, by median septum 2 it is divided into up and down two-layer well 1 and 3, the connection of levels pipeline and the access of arm are take central dividing plate as benchmark, wherein lower floor's well 3 connects the sewage pipe duct, upper strata well 1 connects Storm Sewer System, and it is two-layer up and down to be provided with ventilating pipe 4 connections at central dividing plate, realizes normal ventilation and the safe operation of lower floor's well, the top of ventilating pipe will be higher than upper strata well design head, to guarantee that lower floor can normal ventilation when rainfall is larger.Be provided with one or more primary rainwater closure pipe 7 in the catchpit, its top is connected with inlet for stom water tube connector 5, and be designed with the structure of damming in the junction, its shape is similar to funnel, openings of sizes can be determined according to the run-off that dams of local rainfall and the design of surface flow characteristics, early-stage rainwater during low discharge rill speed can drop and enter this intercepting sewer, it is more outstanding that oxygen enrichment effect and hydraulics all compare to other forms, the terminal lower floor's well that directly connects catchpit of intercepting sewer, rainfall when guaranteeing low discharge can be dammed to enter in lower floor's well, converge with sewage and to enter sewage conduct, the larger middle and later periods rainfall of flow velocity then major part directly is thrown into catchpit dividing plate upper strata and imports rain pipe, thereby realizes the control of damming to early-stage rainwater.
Embodiment 2, referring to Fig. 2 and Fig. 1, Fig. 3:
As shown in the figure, this catchpit citation form and composition and shown in Figure 1 similar, difference shows: the well space, upper strata of this catchpit is separated out an overflow control room 16 by straight wall, be provided with the 9(of float valve mechanism in the control room and comprise float valve and spring etc.), be provided with the cleaning stormwater overflow hole 8 that is communicated with another part space of upper strata well in the certain altitude position of straight wall, this spout hole can often be opened, also can control its keying by float valve, realize the overflow of cleaning rainwater, guarantee safety.And be provided with discharge orifice 10 in the bottom on catchpit upper strata and be connected with the down-hole layer, discharge orifice can be communicated with intercepting sewer.The earial drainage that this hole is used for upper strata rainwater bottom rainwater when low water stage so also can play certain developing result to the catchpit upper strata, and earial drainage water enters the lower floor of catchpit, and this discharge orifice can jointly control keying by ball float controlling organization 9.Wherein, the float valve major function is in order to monitor water level, associating spring and other control measure are controlled, discharge orifice keeps its opening when float valve monitors water level and do not reach certain requirement, a small amount of sewage earial drainage of sneaking into rain pipe when can be implemented in fine day like this enters lower floor's pipeline, also can play simultaneously the effect of Second Interception in the rainy day.And when monitoring water level and be elevated to certain position, float valve can close discharge orifice by spring, cleaning simultaneously the stormwater overflow mouth opens, then water level continues to raise, and begin overflow when water level reaches cleaning stormwater overflow mouth, and the rainwater of this part overflow namely is clean rainwater.
Embodiment 3, referring to Fig. 3 and Fig. 1, Fig. 2:
As seen from the figure, this catchpit is on the basis of catchpit shown in Figure 2, has changed the position of discharge orifice 10, and discharge orifice is opened on straight wall, directly leads to catchpit lower floor well.The catchpit that compares to Fig. 2 can be realized discharge orifice and spout hole simultaneously by a float valve control, and can be so that better to the developing result of upper strata well.Be exactly that automatic open and close control device 11 is installed in the primary rainwater closure structure 6 on intercepting sewer top in addition, be used for the keying of control intercepting sewer, can accurately control like this amount of damming of early-stage rainwater, later stage is closed intercepting sewer, so that the middle and later periods clean rainwater is not dammed fully, but directly enter the upper strata of catchpit, and flow out through rain pipe, improve the efficient of damming.

Claims (5)

1. catchpit that is dammed in the early-stage rainwater source, described catchpit has well body and well lid, be provided with horizontal able to turn on or off central dividing plate in the well body, catchpit is divided into two-layer up and down, lower floor's well is used for connecting the sewage pipe duct, and the upper strata well is used for connecting Storm Sewer System, and inlet for stom water tube connector upper end connects the inlet for stom water on ground, logical upper strata, lower end well is provided with ventilating pipe on the dividing plate; It is characterized in that: the one or more of primary rainwater closure pipes that directly are connected with the inlet for stom water tube connector are arranged, its terminal lower floor's well that directly connects catchpit in the described catchpit.
2. the catchpit that is dammed in the early-stage rainwater source according to claim 1, it is characterized in that: the top of described primary rainwater closure pipe is being designed with the structure of damming with inlet for stom water tube connector junction, this structure of damming is infundibulate, and large I arranges as required.
3. the catchpit that is dammed in the early-stage rainwater source according to claim 1 and 2, it is characterized in that: the well space, upper strata of described catchpit is separated out an overflow control room by straight wall, top, overflow control room is communicated with the inlet for stom water tube connector, the bottom is communicated with the lower floor well by discharge orifice, is provided with the cleaning stormwater overflow hole that is communicated with another part space of upper strata well in the certain altitude position of the straight wall in overflow control room.
4. the catchpit that is dammed in the early-stage rainwater source according to claim 1 and 2, it is characterized in that: described overflow is provided with the float valve controlling organization in the control room, the switching of controlling water kick hole and discharge orifice.
5. the catchpit that is dammed in the early-stage rainwater source according to claim 2 is characterized in that: in the structure of damming on rainwater intercepting sewer top the automatic open and close control device is installed in the early stage.
CN 201220353939 2012-07-20 2012-07-20 Intercepting well for intercepting initial rainwater source Withdrawn - After Issue CN202689171U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102747775A (en) * 2012-07-20 2012-10-24 重庆大学 Initial rainwater source catch basin
CN106480966A (en) * 2016-12-06 2017-03-08 同济大学 A kind of rain sewage dams and auto purification type sand-catching apparatus
CN110145016A (en) * 2019-04-29 2019-08-20 中国市政工程华北设计研究总院有限公司 A kind of rainwater applied to pipe gallery enters corridor device
CN111287296A (en) * 2020-03-07 2020-06-16 叶建锋 Method and device for intelligent operation of rainwater storage tank

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102747775A (en) * 2012-07-20 2012-10-24 重庆大学 Initial rainwater source catch basin
CN106480966A (en) * 2016-12-06 2017-03-08 同济大学 A kind of rain sewage dams and auto purification type sand-catching apparatus
CN110145016A (en) * 2019-04-29 2019-08-20 中国市政工程华北设计研究总院有限公司 A kind of rainwater applied to pipe gallery enters corridor device
CN111287296A (en) * 2020-03-07 2020-06-16 叶建锋 Method and device for intelligent operation of rainwater storage tank

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