CN209828437U - Terminal filter equipment of rainwater drainage system - Google Patents
Terminal filter equipment of rainwater drainage system Download PDFInfo
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- CN209828437U CN209828437U CN201821790178.0U CN201821790178U CN209828437U CN 209828437 U CN209828437 U CN 209828437U CN 201821790178 U CN201821790178 U CN 201821790178U CN 209828437 U CN209828437 U CN 209828437U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
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Abstract
The utility model discloses a terminal filter equipment of rainwater drainage system, include: the suspended matter filtering area is communicated with the water inlet and the water outlet in the horizontal direction; the sludge settling zone is positioned below the suspended matter separation zone and is used for collecting impurities filtered by the suspended matter separation zone; the overflow area is positioned above the suspended matter filtering area; the weir type filter layer is used for separating the suspended matter separation area to filter rainwater and comprises a container with filter holes, suspended particle filter materials arranged in the container and a fastener for pressing the suspended particle filter materials in the container, and the side surface of the container facing the water inlet is inclined towards the water inlet; the utility model has simple structure, low cost, no need of power and convenient maintenance; suspended matters in water and other pollutants attached to the suspended matters can be effectively removed; the weir-type floating filter layer well overcomes the defects that a mud film is easily formed on the surface of the traditional filter device, the filter layer is easily blocked and the filter material is troublesome to clean, and the filter layer is convenient and thorough to clean.
Description
Technical Field
The utility model relates to a drainage filters technical field, in particular to terminal filter equipment of rainwater drainage system.
Background
Suspended matters are one of important pollutants in the rainwater runoff, and a large amount of suspended matters are carried in the urban rainwater runoff and mainly come from debris substances generated by vehicle corrosion, waste gas generated by motor vehicles, atmospheric dry and wet sediments, substances generated by tire and brake friction, smoke released from residential chimneys and the like. Besides being polluting, suspended solids are carriers of many other pollutants (such as heavy metals, N, P, grease substances, toxic oil hydrocarbons (PHC) and Polycyclic Aromatic Hydrocarbons (PAHS), etc.), especially suspended particles with large specific surface area. Before the rainwater runoff in the drainage pipe network is drained into the receiving water body, the effective removal of suspended particles is significant for reducing the pollution of the rainwater runoff.
In developed countries, in order to solve the problem of initial rainwater pollution of a split-flow rainwater system, a great deal of research on initial rainwater pollution control technologies is carried out, and many forms of initial rainwater end treatment devices, such as storm water receivers (Stormwater), solid rainwater interceptors (Solids Stormwater interceptors, SSI for short), storm water filters (Stormwater) and the like, are developed. The devices not only can effectively remove suspended matters in rainwater, but also can remove floating matters and floating oil in the rainwater, and become a main technical means for controlling the pollution tail end of the rainwater. The devices are based on the principle of cyclone or advection sedimentation and the principle of filtration for removing Suspended Substances (SS). During the cyclone precipitation, due to the instability of water inlet, the hydraulic cyclone effect is difficult to control stably, the precipitation effect is influenced, and the removal rate of total suspended matters is difficult to improve. For the horizontal flow sedimentation tank, the retention time is the main factor for determining the sedimentation of suspended matters, so that the horizontal flow sedimentation rainwater tail end treatment device has larger volume and higher requirement on the field area, and the popularization and the application are influenced. The SS removing device based on the filtering principle has the problems that a filtering layer is easy to block, filtering materials are difficult to clean, and later maintenance is troublesome.
At present, the domestic terminal purification device of the split-flow rainwater drainage system for removing suspended matters also mainly adopts the advection sedimentation principle or the rotational flow desilting basin, and the devices have the defects of no occupation of land, higher manufacturing cost, strict requirements on hydraulic conditions, higher head loss and great difference in the effect of rainwater pollution control.
SUMMERY OF THE UTILITY MODEL
The utility model provides a terminal filter equipment of rainwater drainage system on the basis of original rainwater well, adds and floats formula filter layer and adopts upward flow filtration rainwater runoff, improves the interception rate of rainwater well to the suspended solid.
An end filter device for a storm water drainage system comprising:
the suspended matter filtering area is communicated with a water inlet and a water outlet in the horizontal direction;
the sludge settling zone is positioned below the suspended matter filtering zone and is used for collecting impurities filtered by the suspended matter filtering zone;
the overflow area is positioned above the suspended matter filtering area;
further comprising:
the weir type filter layer is used for separating the suspended matter filtering area to filter rainwater, the weir type filter layer comprises a container with filtering holes, suspended particle filtering materials arranged in the container and a fastener for pressing the suspended particle filtering materials in the container, and the container inclines towards the water inlet from the side surface facing the water inlet;
for ease of manufacture and installation, the container comprises:
the front filter screen plate is a side surface of the container facing the water inlet;
the rear filter screen plate is a side surface of the container facing the water outlet; in order to ensure the filtering effect and reduce the transverse size, the inclination angle of the front filter screen plate relative to the horizontal plane is 45-70 degrees, and the rear filter screen plate is arranged in parallel relative to the front filter screen plate;
the two side plates are connected with the side wall where the suspended matter filtering area is located and form a frame-shaped structure with the front filter screen plate and the rear filter screen plate in a surrounding mode;
the lower bearing layer is fixed at the bottom of the frame-shaped structure; the front filter screen plate and the rear filter screen plate are made of rigid frames combined with nylon nets, have certain strength and water through holes, and are low in manufacturing cost and convenient to replace the nylon nets. The lower supporting layer can be directly made of nylon net.
The fastener is in order to compress tightly the purification of suspended particle filter material in order to realize the rainwater, and when the suspended particle filter material was washd to needs, the fastener was unlocked, makes the loose back of suspended particle filter material, and the adsorbed suspended solid drops to the heavy mud district. To facilitate unlocking and compression, the fastener comprises:
the four sliding rods are fixed at four corners of the upper part of the frame-shaped structure;
the four corners of the upper supporting layer are slidably arranged on the corresponding sliding rods, and a deflector rod extending into the container is fixed at the bottom of the upper supporting layer; the deflector rod is inserted into the suspended particle filter material and has deviation in the vertical lifting direction; the upper supporting layer is movably arranged and can be conveniently moved, so that the compaction and the loosening of the suspended particle filter material are quickly realized;
and the locking piece locks the upper bearing layer pressed downwards.
The structure of retaining member can adopt multiple mode, as long as can go on the bearing layer to position inject can, also can directly carry out the position to flexible depression bar and inject, can accomplish the function of locking and unblock, for example install the couple on flexible depression bar, set up the lockhole in the fixed part of suspended solid filtering area, couple and lockhole cooperation realize the locking promptly.
And in order to facilitate manufacturing and installation, the mud settling area is provided with a suspended shaft bottom buttress for installing the container.
The utility model discloses with weir formula filter layer orientation the side of water inlet adopts upward to the flow filtration rainwater runoff to the slope of water inlet direction, improves the entrapment rate of device to Suspended Solid (SS), simultaneously, has overcome traditional sand filter surface and has formed the drawback that mud film, filter bed easily block up, the filter material washs the difficulty. The suspended solid accessible after the separation of filtering is regularly drawn clearly in heavy mud district, with pollutant discharge system to realize the control of rainwater initial stage pollution. During rainstorm, the overload rainfall runoff can be directly discharged to a downstream water outlet through the overflow area, and the upstream drainage safety is ensured.
The deflector rod is used for scattering suspended particle filter materials absorbing a plurality of floating objects when the upper bearing layer rises, so that the suspended particle filter materials are easy to loosen and convenient to clean. In order to facilitate control of the upper supporting layer, preferably, a telescopic pressure lever is arranged at the top of the upper supporting layer.
In order to make the upper supporting layer ascend better, preferably, the fastener further comprises:
and the compression spring is arranged between the frame-shaped structure and the upper supporting layer and provides power for the upper supporting layer to slide upwards.
In order to facilitate the control of the movement of the upper bearing layer, preferably, four compression springs are arranged and are respectively installed on the four sliding rods, one end of each compression spring is connected to the protrusion of each sliding rod, and the other end of each compression spring is connected with the upper bearing layer.
In order to improve the filtering effect and reduce the cost, preferably, the suspended particle filter material adopts foam particles.
In order to ensure the filtering effect, preferably, the weir crest of the weir-type filtering layer is higher than the top elevation of the water inlet.
In order to facilitate cleaning and maintenance, preferably, the bottom of the mud settling area is obliquely arranged and is lower close to one end of the water inlet. The SS particles deposited at the bottom of the well are deposited to the water inlet side under the action of the inclined bottom plate.
The utility model discloses can hold back the SS granule in the rainwater runoff high-efficiently to reduce the terminal pollution to receiving the water of effluenting of reposition of redundant personnel rainwater drainage system. Trapped SS is in a weir type filter layer taking suspended foam particles as filler, the filter material can float upwards and the filler expands due to rhoSS particles>ρWater (W)>ρFilter materialAnd SS particles adhered in the filter layer are precipitated to a mud settling area under the action of self gravity, so that the separation of the filter material and the intercepted SS particles is easily realized. SS particles deposited at the bottom of the well are deposited towards the water inlet side under the action of the inclined bottom plate, so that cleaning and maintenance are facilitated. During rainstorm, rainfall runoff with over-design load can be directly overflowly discharged through the weir crest of the weir-type filter layer, the upstream drainage safety is ensured, and the weir crest can be adjusted up and down according to the upstream discharge safety requirement.
In the use process, with the production of rainfall runoff, the initial stage rainwater that the flow is less, the pollution is heavier flows into terminal processing apparatus from the inlet tube, under the blockking of overflow weir, flows into the disengagement zone downwards, and under the filtering action of the unsteady filtering layer of disengagement zone, the suspended solid is held back, and the rainwater can purify.
And with the increase of rainfall, rainfall runoff is gradually increased, and pollution concentration is also gradually reduced, and at the moment, safe drainage becomes the main function of the system. Under this operating mode, the water yield increase in the rainwater system, the water level rises, and the flow that surpasss the design load directly drains to the outlet pipe through the overflow weir, ensures that the upper reaches does not take place to overflow and waterlogging.
When the filter layer is cleaned, the density relationship rho existsSS particles>ρWater (W)>ρFilter materialThe filter material can automatically float up only by opening the filter layer height control spring, and SS particles adhered to the filter layer drop under the action of self gravity, so that the filter material is easily separated from the intercepted particles. After the cleaning is finished, the spring is pressed back to form a filter layer with filter material particles arranged closely.
The utility model has the advantages that:
(1) simple structure, low cost, no need of power and convenient maintenance.
(2) Can effectively remove suspended matters in water and other pollutants attached to the suspended matters, particularly suspended matters in small flow at the initial stage, and can discharge runoff peak flow safely without overflow.
(3) The weir-type floating filter layer well overcomes the defects that a mud film is easily formed on the surface of the traditional filter device, the filter layer is easily blocked and the filter material is troublesome to clean, is simple and convenient to install, and is convenient and thorough to clean.
Drawings
Fig. 1 is a schematic sectional view of the terminal filtering device of the rainwater drainage system of the present invention.
Fig. 2 is a schematic diagram of the position relationship between the telescopic pressing rod and the shift lever according to the present invention.
Detailed Description
As shown in fig. 1, the terminal filtering device of the rainwater drainage system of the present embodiment includes a weir-type filtering layer 8 composed of a stainless steel grid 1, a suspended particle filtering material 2 and a telescopic pressure rod 3, and a mud settling zone 7.
The stainless steel grid mesh 1 is used as a container and comprises a front filter screen plate, a rear filter screen plate and two side plates.
Weir type filter layer 8 is installed in the inspection shaft to 5 laterals of water inlet, cuts off water inlet 5 and delivery port 6, and 8 weir crests elevations of weir type filter layer are adjustable, according to the inflow, the upper reaches drainage safety requirement is decided, for the quality of water that guarantees the device and flow out, should be higher than inlet tube roof elevation.
The weir-type filter layer 8 is arranged on the buttress 4 at the bottom of the suspended shaft, rainwater flows into the inspection well from the water inlet 5, and gradually rises along with the water level at the side of the water inlet 5, and water gradually permeates the suspended particle filter material 2 of the weir-type filter layer 8 under the action of water level difference to intercept SS therein. The mud settling area 7 is arranged at the bottom of the device well, and the bottom surface of the mud settling area 7 inclines towards the water inlet 5, so that the trapped suspended matters can be conveniently concentrated and settled and removed.
The weir-type floating filter layer 8 is fully distributed on the whole cross section, and the thickness of the filter layer is designed according to the target SS removal rate and the head loss limit value under different flow rates.
The weir type floating filtering layer 8 is filled with foam plastic balls with uniform particle size as suspended particle filtering material 2, and the upper and lower supporting layers of the filtering layer are nylon nets with the aperture slightly smaller than the particle size of the filtering material and are used for netting the filtering material particles. The periphery of the nylon net is a rigid frame, and the nylon net on the upper bearing layer can be controlled by the compression rod 3 to move up and down along the frame, so that the height of the filter layer is changed.
As shown in fig. 2, a deflector rod 10 extending into the container is fixed at the bottom of the upper supporting layer, and the deflector rod 10 is used for scattering the suspended particle filter material 2 adsorbed with a plurality of floating objects when the upper supporting layer rises, so that the suspended particle filter material 2 is more easily loosened and is convenient to clean.
This embodiment is used:
during not rainfall, when carrying out the filter material washing, open compression spring, upper and lower bearing layer interval increase, suspension granule filter material 2 come-up, the SS granule that holds back in the weir formula floats the filtering layer 8 simultaneously deposits to heavy mud district 7 under the action of gravity, wash the back of accomplishing, compress the compression spring, upper and lower bearing layer interval reduces, suspension granule filter material 2 that 8 inside packings in weir formula floats the filtering layer is compressed tightly, thereby resume filter effect, be unlikely to float between upper and lower bearing layer under upward rivers erode.
When rainfall runoff is generated, initial rainwater with small flow and heavy pollution flows into the tail end filtering device from the water inlet 5, and SS particles are intercepted by the filtering and intercepting functions of the filtering layer through the weir type floating filtering layer 8 under the action of water pressure difference, so that the rainwater is purified.
And with the increase of rainfall, rainfall runoff is gradually increased, and pollution concentration is also gradually reduced, and at the moment, safe drainage becomes the main function of the system. Under this operating mode, the water yield increase in the rainwater system, the water level rises, and the flow that exceeds design load directly overflows through weir crest 9, directly discharges to discharge port 6, ensures that the upper reaches does not take place to overflow and waterlogging.
In conclusion, the embodiment can efficiently retain suspended matters (SS) in the rainwater runoff, thereby reducing the pollution of the terminal outflow of the separate-flow rainwater drainage system to the receiving water body. The SS that holds back is in the weir formula filter layer that suspension foam particle is the filler, through relaxing flexible depression bar 3, can make the filter material come-up, the filler inflation, because the rho SS granule > rho water > rho filter material, and the adhesion is then depositd to heavy mud district 7 under self action of gravity in the intraformational SS granule of filter, the separation of filter material and holding back SS is easily realized, the SS granule in deposit shaft bottom is convenient for draw clearly and maintain under the effect of hang plate, when the torrential rain, rainfall runoff accessible weir top 9 of weir formula filter layer of super design load directly overflows and discharges, ensure the drainage security in upper reaches, weir top 9 can discharge the safety requirement according to the upper reaches and carry out the vertical adjustment.
Claims (7)
1. An end filter device for a storm water drainage system comprising:
the suspended matter filtering area is communicated with a water inlet and a water outlet in the horizontal direction;
the sludge settling zone is positioned below the suspended matter filtering zone and is used for collecting impurities filtered by the suspended matter filtering zone;
the overflow area is positioned above the suspended matter filtering area;
it is characterized by also comprising:
the weir type filter layer is used for separating the suspended matter filtering area to filter rainwater, the weir type filter layer comprises a container with filtering holes, suspended particle filtering materials arranged in the container and a fastener for pressing the suspended particle filtering materials in the container, and the container inclines towards the water inlet from the side surface facing the water inlet;
the container includes:
the front filter screen plate is a side surface of the container facing the water inlet;
the rear filter screen plate is a side surface of the container facing the water outlet; the inclination angle of the front filter screen plate relative to the horizontal plane is 45-70 degrees, and the rear filter screen plate is arranged in parallel relative to the front filter screen plate;
the two side plates are connected with the side wall where the suspended matter filtering area is located and form a frame-shaped structure with the front filter screen plate and the rear filter screen plate in a surrounding mode;
the lower bearing layer is fixed at the bottom of the frame-shaped structure;
the front filter screen plate and the rear filter screen plate are made in a mode of combining a rigid frame with a nylon net, and the lower supporting layer is made of the nylon net;
the fastener includes:
the four sliding rods are fixed at four corners of the upper part of the frame-shaped structure;
the four corners of the upper supporting layer are slidably arranged on the corresponding sliding rods, and a deflector rod extending into the container is fixed at the bottom of the upper supporting layer; the deflector rod is inserted into the suspended particle filter material and has deviation in the vertical lifting direction;
and the locking piece locks the upper bearing layer pressed downwards.
2. A stormwater drainage system end filter unit as claimed in claim 1, wherein the upper support layer is provided with a telescopic strut at the top.
3. A stormwater drainage system end filter arrangement as claimed in claim 1, wherein the fastener further comprises:
and the compression spring is arranged between the frame-shaped structure and the upper supporting layer and provides power for the upper supporting layer to slide upwards.
4. A rainwater drainage system end filter according to claim 3 wherein four said compression springs are mounted on four said rods, one end of said compression springs being connected to said protrusions of said rods and the other end of said compression springs being connected to said upper support layer.
5. The rainwater drainage system end filter assembly of claim 1 wherein said suspended particulate filter material is foam particles.
6. The stormwater drainage system end filter arrangement as claimed in claim 1, wherein the weir crest of the weir grate is at a higher elevation than the top of the water inlet.
7. A rainwater drainage system end filter assembly as claimed in claim 1 wherein the bottom of said mud settling zone is inclined and is lower adjacent the inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821790178.0U CN209828437U (en) | 2018-10-31 | 2018-10-31 | Terminal filter equipment of rainwater drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821790178.0U CN209828437U (en) | 2018-10-31 | 2018-10-31 | Terminal filter equipment of rainwater drainage system |
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| Publication Number | Publication Date |
|---|---|
| CN209828437U true CN209828437U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821790178.0U Active CN209828437U (en) | 2018-10-31 | 2018-10-31 | Terminal filter equipment of rainwater drainage system |
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| Country | Link |
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| CN (1) | CN209828437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117815758A (en) * | 2024-03-06 | 2024-04-05 | 德州禹工环保设备有限公司 | A filtering and separating device for drainage ditch |
-
2018
- 2018-10-31 CN CN201821790178.0U patent/CN209828437U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117815758A (en) * | 2024-03-06 | 2024-04-05 | 德州禹工环保设备有限公司 | A filtering and separating device for drainage ditch |
| CN117815758B (en) * | 2024-03-06 | 2024-05-03 | 德州禹工环保设备有限公司 | Filtering and separating device for drainage ditch |
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