CN103774742B - Drainage pipeline grating device - Google Patents

Drainage pipeline grating device Download PDF

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Publication number
CN103774742B
CN103774742B CN201410004396.7A CN201410004396A CN103774742B CN 103774742 B CN103774742 B CN 103774742B CN 201410004396 A CN201410004396 A CN 201410004396A CN 103774742 B CN103774742 B CN 103774742B
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China
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water
grid
cylinder
inlet
inlet channel
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CN103774742A (en
Inventor
周永潮
方磊
张萍
张仪萍
易文涛
白航
沈东杰
王钰丹
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The invention discloses a drainage pipeline grating device. The drainage pipeline grating device comprises a water body filtering area with a water inlet pipeline and a water outlet pipeline. A grating cylinder with the vertical axis is arranged in the water body filtering area. The grating cylinder is provided with a tangent inlet communicated with the water inlet pipeline and a grating net arranged on the peripheral wall of the grating cylinder. The grating cylinder serves as a filtering structure, and therefore the defect that impurities easily adhere to an existing straight-flow type filter screen is overcome; the tangent inlet is formed, a water body forms rotational flow in the grating cylinder, and therefore the water flow direction is parallel and tangent to the cylinder wall, the impurities can not adhere to screen holes of the cylinder wall, and the problems that the water filtering area is sharply narrowed due to impurity adhesion, flowing is not smooth, and water overflows out of the water inlet of the water inlet pipeline are solved.

Description

A kind of drainage pipe grid device
Technical field
The present invention relates to a kind of urban sewerage and drainage system, particularly a kind of drainage pipe grid device.
Background technology
Suspension is one of important pollutant in rainfall runoff, especially the impurity such as leaf, fiber (hair, fabric), paper, these suspensions to know clearly serious threat not only to receiving water body water quality band, on the other hand, entering of these impurity also causes very large negative effect to the view of water body.Therefore, drainage pipeline networks moderate rain, sewage, before row river, carry out effective removal of suspension and dam, and are significant to minimizing receiving water body water pollution and landscape destruction.
In developed country, in order to solve the pollution problem of segregation system storm-water system early-stage rainwater, carry out a large amount of early-stage rainwater pollution control technology research, have developed the early-stage rainwater end-o f-pipe-control device of many forms, such as Flogard, Hydro StormTrain series of products, Stormfilter, Highland Tank'sSolids etc., these devices not only effectively can remove the bulky grain such as leaf, fiber suspension, to small particle diameter suspended particulate, also there is good removal effect simultaneously, therefore become the Main Means of draining purification.But these technology are when removing bulky grain suspension in rainwater, main employing be netted Hanging Basket, the removing method of mesh grille, or adopt the cleaning principles such as filtration, although have good removal effect to bulky grain suspended impurity and small particle diameter suspended particulate, but the larger suspension long-term accumulated such as leaf, fiber is at Hanging Basket or grid place, or filtration beds surface, after longtime running, the assembly such as filter screen, grid conveyance capacity certainly will be caused to reduce even block, thus very large threat is caused to draining safety.
In order to solve the problem, researcher is had to propose a kind of anticlogging filter, notification number be CN202430821U patent document discloses a kind of catch pit cleaning and filtering device, this catch pit cleaning and filtering device, primarily of framework and filter screen composition, this framework is grid type, make cylindrical shape or the square tube shape of end uncovered, and the diameter of this columnar framework is more smaller than the internal diameter of circular row well, the height of framework is less than the degree of depth of catch pit, framework is at the height of catch pit planted agent lower than drainage pipe, dress filter screen is covered in the bottom of this framework and surrounding, at top ring or the hinge mounting knob of framework.
And publication number CN102127929A invents is a kind of rainwater well grid cleaning device being used for preventing nozzle blocking under catch-basin, grid cover plate blocking when this invention can effectively prevent rainy, protection urban environmental hygiene.
The invention of another kind of publication number CN102691350A is a kind of plain type slip grid anti-blocking rain water mouth, mainly comprise inlet for stom water body and cover for rain, this invention can the inlet for stom water that blocked by foreign material of quick-recovery soon, make it recover water inlet ability, realize fast transport road rain water, reduce excess surface water between storm period.
But said apparatus or filter screen is set under well lid or directly carries out water body filtration by well lid, water body is all vertical impact filtering surface, impurity is easy to enter the mesh of screen pack and causes screen pack to block, the filter effect of screen pack is caused to decline, or need often to clear up screen pack, labor intensive.
Summary of the invention
The invention discloses a kind of drainage pipe grid device, to solve in prior art, screen pack easily blocks, and needs the problem of frequent cleaning.
A kind of drainage pipe grid device, comprise the water body filtration district with inlet channel and outlet conduit, be provided with the grid cylinder that axes normal is arranged in described water body filtration district, grid cylinder has the tangential inlet be communicated with inlet channel, and is arranged on the grid of perisporium.
The pipeline be connected with described tangential inlet, the section tubular wall of pipeline and the barrel of grid cylinder tangent, thus make the water body entering grid cylinder along pipeline from tangential inlet form eddy flow in the barrel of cartridge type grid.
During work, the a small amount of effluent stream in ground is as the inlet channel of said apparatus, the sewage that flow is less, impurity is more enters grid cylinder from the tangential inlet be communicated with inlet channel, current flow along barrel, form eddy flow fluidised form, flow direction is parallel with the barrel of grid cylinder tangent, and water body is filtered to water body filtration district from the mesh of grid cylinder.
Current form eddy flow, make impurity in sewage under rotary water current effect, collect to centre, and produce the effect of Separation of Solid and Liquid, like this, not only large than the mesh of grid cylinder impurity obtains removal, and the suspension less than mesh equally also can effectively be removed.
Meanwhile, impurity along with the flow direction of current parallel with grid wall surface tangent, impurity can not the barrel of vertical impact grid cylinder, avoids impurity adhere in the mesh of grid cylinder and block mesh, ensure that the normal filter capacity of grid cylinder.
In order to make current horizontal direction enter grid cylinder, preferably, the water (flow) direction of the water outlet of described inlet channel is mutually vertical with the axis of described grid cylinder.
In order to increase filter area, make the sewage in inlet channel enter grid cylinder and filter, preferably, described inlet channel is communicated to the middle part of grid cylinder.
While guarantee inflow, in order to improve eddy flow effect, preferably, the central angle angle in described tangential inlet relative grid cylinder axle center is 70 degree ~ 80 degree.Described angle too small, then tangential inlet is narrow, then inflow is little, is unfavorable for draining; Described angle is excessive, then the current major part entering grid cylinder from tangential inlet can be made cannot to fit barrel, and the eddy flow degree of current is declined, and filter effect is deteriorated.
In order to when sewage quantity is larger, discharged fast by current, preferably, described tangential inlet is communicated to inlet channel by the transition conduit be arranged in water body filtration district, and the top of described transition conduit has overfall.
When the discharge of inlet channel is comparatively large, when water level exceeds the height of overfall, excessive water can from overfall overflow, water body filtration district is not directly entered by grid cylinder, to outlet conduit discharge, avoid large discharge to the impact of barrel, also can guarantee drainage efficiency simultaneously.
In order to make the present invention have larger filtration yield, preferably, the end of described overfall, flushes along with the edge, top of inlet channel.Only have when discharge is excessive, sewage just directly can enter water body filtration district from overfall.
In order to improve sewage water filtration amount and filter effect, preferably, described grid cylinder is provided with two, both tangential inlet parallel connection access inlet channels.
In order to reduce horizontal area of the present invention, preferably, the transition conduit of described two grid cylinders is arranged side by side, and mutually reclines.
Conveniently reclaim and clear up the impurity in grid cylinder, preferably, the bottom of described grid cylinder is connected with dismountable netted foreign material basket.After impurity finally focuses on the middle part of grid cylinder under long-term cyclonic action, fall into the netted foreign material basket of the bottom being located at grid cylinder, dismantle netted foreign material basket, foreign material can be got rid of and cleaning.
Preferably, described inlet channel and outlet conduit are oppositely arranged in the horizontal direction.
The invention has the beneficial effects as follows:
Drainage pipe grid device of the present invention, by filtration is arranged to grid cylinder, the foreign material changing original single flow grid are easy to the shortcoming of adhering to, by arranging tangential inlet, making water body form eddy flow in grid cylinder, making water (flow) direction parallel with barrel tangent, impurity cannot be attached in the mesh of barrel, avoid and fall sharply because impurity attachment causes drainage area, cause flowing not smooth, cause the problem that the water inlet of inlet channel overflows.Meanwhile, the present invention, by arranging overfall, makes great deal running water directly enter the discharge of water body filtration district by overfall, without grid cylinder, can thus realize safety dumping runoff peak flood flow, also avoid the hydraulic blow of the barrel to grid cylinder, improve application life of equipment.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention.
Fig. 2 is the cross-sectional view of another angle of the present invention.
Detailed description of the invention
As depicted in figs. 1 and 2, the drainage pipe grid device of the present embodiment comprises: with the water body filtration district 3 of inlet channel 1 and outlet conduit 2, inlet channel 1 and outlet conduit 2 are oppositely arranged in the horizontal direction.
Be provided with in water body filtration district 3 that axes normal arranges, structure identical and two grid cylinders 4, each grid cylinder 4 has that the tangential inlet that is communicated with inlet channel 1 41, two tangential inlets 41 are in parallel accesses inlet channel.Each grid cylinder 4 is provided with grid at perisporium, and mesh is used for filtering the liquid in water body.
Each tangential inlet 41 is communicated to inlet channel 1 by the transition conduit 5 be arranged in water body filtration district, and in order to reduce the horizontal area of the present embodiment, two transition conduit 5 are arranged side by side, and mutually recline.
In order to when sewage quantity is larger, discharged fast by current, have overfall 51 at the top of transition conduit 5, the end of overfall 51, flushes along with the edge, top of inlet channel 1.
In order to make current horizontal direction enter grid cylinder 4, the water (flow) direction of the water outlet of inlet channel 1 is mutually vertical with the axis of grid cylinder 1.In order to increase filter area, make the sewage in inlet channel enter grid cylinder 1 and filter, inlet channel 1 is communicated to the middle part of grid cylinder 4.
While guarantee inflow, in order to improve eddy flow effect, the central angle angle in relative grid cylinder 4 axle center of tangential inlet 41 is 70 degree ~ 80 degree.When this angle too small, tangential inlet is narrow, then inflow is little, is unfavorable for draining; When this angle is excessive, then the current major part entering grid cylinder from tangential inlet can be made cannot to fit barrel, and the eddy flow degree of current is declined, and filter effect is deteriorated.Therefore, in the present embodiment, this central angle angle is 75 degree.
Dismountable netted foreign material basket 6 is connected with, for collecting the impurity that grid cylinder 4 filters in the bottom of each grid cylinder 4.After impurity finally focuses on the middle part of grid cylinder 4 under long-term cyclonic action, fall into the netted foreign material basket 6 of the bottom being located at grid cylinder 4, dismantle netted foreign material basket 6, foreign material can be got rid of and cleaning.
The present embodiment course of work:
When the discharge of sewage is less, when being less than the peak level of inlet channel 1, sewage enters grid cylinder 4 from the tangential inlet 41 be communicated with inlet channel 1, current flow along barrel, direction indication along arrow forms eddy flow fluidised form, flow direction is parallel with the barrel of grid cylinder 4 tangent, and the direction indication water body along arrow is filtered to water body filtration district 3 from the mesh of grid cylinder.
And when the discharge of sewage is comparatively large, when being greater than the peak level of inlet channel, excessive sewage can from overfall 51 overflow, water body filtration district 3 is not directly entered by grid cylinder 4, discharge to outlet conduit 2, avoid large discharge to the impact of barrel, also can guarantee drainage efficiency simultaneously.
The drainage pipe grid device of the present embodiment, by filtration is arranged to grid cylinder 4, the foreign material changing original single flow screen pack are easy to the shortcoming of adhering to, by arranging tangential inlet 41, making water body form eddy flow in grid cylinder 4, making water (flow) direction parallel with barrel tangent, impurity cannot be attached in the mesh of barrel, avoid and fall sharply because impurity attachment causes drainage area, cause flowing not smooth, cause the problem that the water inlet of inlet channel overflows.Meanwhile, the present invention, by arranging overfall 51, makes great deal running water directly enter the discharge of water body filtration district by overfall 51, without grid cylinder, can thus realize safety dumping runoff peak flood flow, also avoid the hydraulic blow of the barrel to grid cylinder 4, improve application life of equipment.

Claims (7)

1. a drainage pipe grid device, comprise the water body filtration district with inlet channel and outlet conduit, it is characterized in that, in described water body filtration district, be provided with the grid cylinder that axes normal is arranged, grid cylinder has the tangential inlet be communicated with inlet channel, and is arranged on the grid of perisporium; The central angle angle in described tangential inlet relative grid cylinder axle center is 70 degree ~ 80 degree; Described tangential inlet is communicated to inlet channel by the transition conduit be arranged in water body filtration district; Described grid cylinder is provided with two, both tangential inlet parallel connection access inlet channels; The transition conduit of described two grid cylinders is arranged side by side, and mutually reclines.
2. drainage pipe grid device as claimed in claim 1, it is characterized in that, the water (flow) direction of the water outlet of described inlet channel is mutually vertical with the axis of described grid cylinder.
3. drainage pipe grid device as claimed in claim 1, it is characterized in that, described inlet channel is communicated to the middle part of grid cylinder.
4. drainage pipe grid device as claimed in claim 1, it is characterized in that, the top of described transition conduit has overfall.
5. drainage pipe grid device as claimed in claim 4, is characterized in that, the end of described overfall flushes along with the edge, top of inlet channel.
6. drainage pipe grid device as claimed in claim 1, it is characterized in that, the bottom of described grid cylinder is connected with dismountable netted foreign material basket.
7. drainage pipe grid device as claimed in claim 1, it is characterized in that, described inlet channel and outlet conduit are oppositely arranged in the horizontal direction.
CN201410004396.7A 2014-01-02 2014-01-02 Drainage pipeline grating device Active CN103774742B (en)

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Application Number Priority Date Filing Date Title
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CN103774742B true CN103774742B (en) 2015-06-24

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105089135B (en) * 2015-09-16 2017-05-10 江苏河马井股份有限公司 Pre-mounted rainwater treatment device
CN108560482B (en) * 2018-04-21 2019-11-05 肖国选 Anti-blocking sewage pipe road junction
CN109603243B (en) * 2019-01-31 2020-06-19 浙江大学 Drainage pipeline grating device for preventing grating surface from being blocked

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6241881B1 (en) * 1997-11-21 2001-06-05 University Of South Australia Pollution separator and filtration apparatus
KR20100114733A (en) * 2009-04-16 2010-10-26 충주대학교 산학협력단 Vortex trap apparatus
CN102392487A (en) * 2011-11-18 2012-03-28 江苏大学 Pollutant separation device of rainwater and sewage pipeline
KR20120095767A (en) * 2011-04-08 2012-08-29 한일환경기술(주) Non-point contaminants purification system for treating first rain
CN203795573U (en) * 2014-01-02 2014-08-27 浙江大学 Drainage pipeline grid device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6241881B1 (en) * 1997-11-21 2001-06-05 University Of South Australia Pollution separator and filtration apparatus
KR20100114733A (en) * 2009-04-16 2010-10-26 충주대학교 산학협력단 Vortex trap apparatus
KR20120095767A (en) * 2011-04-08 2012-08-29 한일환경기술(주) Non-point contaminants purification system for treating first rain
CN102392487A (en) * 2011-11-18 2012-03-28 江苏大学 Pollutant separation device of rainwater and sewage pipeline
CN203795573U (en) * 2014-01-02 2014-08-27 浙江大学 Drainage pipeline grid device

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