CN103835363B - Electric combined system pipe network intercepting well - Google Patents
Electric combined system pipe network intercepting well Download PDFInfo
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- CN103835363B CN103835363B CN201410060134.2A CN201410060134A CN103835363B CN 103835363 B CN103835363 B CN 103835363B CN 201410060134 A CN201410060134 A CN 201410060134A CN 103835363 B CN103835363 B CN 103835363B
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Abstract
The invention discloses an electric combined system pipe network intercepting well. The electric combined system pipe network intercepting well comprises a well body. A rain and sewage combined water inlet pipe is arranged at the left end of the well body, a water outlet pipe communicated with natural water is arranged at the right end of the well body, an initial rain overflow weir, a residue stop floating bowl and a multistage adjustable overflow plate are sequentially arranged on a flow channel of the well body from left to right, a sewage intercepting pipe is arranged at the bottom of the side wall, between the rain and sewage combined water inlet pipe and the initial rain overflow weir, of the well body, an initial rain intercepting pipe is arranged at the bottom of the side wall, between the initial rain overflow weir and the multistage adjustable overflow plate, of the well body, and the sewage intercepting pipe and the initial rain intercepting pipe are respectively provided with an electric intercepting check valve. A sewage intercepting pipe orifice and an initial rain intercepting pipe orifice are respectively provided with one electric intercepting check valve, sewage and initial rainwater can be accurately intercepted by accurately controlling the opening of the electric intercepting check valves, and meanwhile sewage and rainwater in an initial rainwater pipeline are prevented from backflow. The residue stop floating bowl is used for stopping residues, the blockage phenomenon is avoided, and the drainage water level can be adjusted through the multistage adjustable overflow plate.
Description
Technical field
The present invention relates to sewerage pipeline network, refer to a kind of electronic combined system pipe network catchpit particularly.
Background technology
Rainwater during the rainfall initial stage is called for short just rain, at the rainfall initial stage, rainwater has dissolved a large amount of sour gas in air, vehicle exhaust, the pollution gas such as plant gas, behind landing ground, again owing to washing away asphalt felt roofing, asphalt concrete road, building site etc., make just in the rain containing a large amount of organic matters, pathogen, heavy metal, grease, the pollutants such as suspended solid, therefore just the degree of contamination of rain is higher, usually the degree of contamination of common municipal sewage is exceeded, if rainwater in early stage is directly entered natural water, very serious pollution will be caused to water body, so, need process first rain.At present, pipe network system of damming normally is adopted to dam to sewage conduct by first rain, deliver to Wastewater Treatment Plant and carry out purified treatment, and the rainwater pollution degree in rainfall later stage is lighter, after the suspension in pretreatment trap water, solid particle polluter, directly enter natural water, but current first rain dams there is following shortcoming in facility: 1) be difficult to accurately control just rain combined closure system; 2) during pretreatment before discharging later stage rainwater, filter plant easily blocks; 3) discharge level is fixed non-adjustable.
Summary of the invention
Object of the present invention will provide a kind of electronic combined system pipe network catchpit exactly, and this catchpit is convenient to control combined closure system, avoids clogging, achieves discharge level height adjustable.
For achieving the above object, the technical solution used in the present invention is: a kind of electronic combined system pipe network catchpit, comprise well body, described well body left end is provided with confluence of rainwater and sewage water inlet pipe, described well body right-hand member is provided with the outlet pipe be communicated with natural water, the runner of described well body is provided with from left to right successively just rain overflow weir, debris retaining floating drum, and multistage adjustable overflow plate, sewage intercepting sewer is provided with in the bottom of described confluence of rainwater and sewage water inlet pipe and described well body sidewall just between rain overflow weir, just rain intercepting sewer is provided with in the bottom of described well body sidewall just between rain overflow weir and described multistage adjustable overflow plate, described sewage intercepting sewer and described just rain intercepting sewer are respectively equipped with the electronic flap valve that dams.Described multistage adjustable overflow plate is the overflow plate of the adjustable change of a kind of overflow height, and it can adopt various structures form.
The present invention installs the electronic flap valve that dams respectively at sewage intercepting sewer and first rain mouth of pipe place of damming, by accurately controlling the aperture of the electronic flap valve that dams, achieve accurately damming to sewage and early-stage rainwater, the rainwater that simultaneously also prevent sewage and early-stage rainwater pipeline flows backwards; Floating thing in rainwater before entering natural water with the debris retaining floating drum interception across whole well body runner and suspension, this debris retaining floating drum debris retaining is effective, avoids clogging; The multistage adjustable overflow plate of the present invention replaces existing fixed weir or gate, and the height of this multistage adjustable overflow plate can regulate on a large scale, achieves discharge level height adjustable; Present invention achieves effective separation of early-stage rainwater, allow early-stage rainwater all dam to greatest extent and be sent to Wastewater Treatment Plant after storm detention tank.
Further, the described electronic flap valve that dams is the adjustable swing type rubber flap check valve that dams, comprise the runner arranged in valve body, valve body and the valve gap be arranged on valve body, in described valve body, upper end is provided with groove near between the valve body and valve gap of water inlet one end, back shaft is provided with in described groove, described back shaft is fixedly connected with the flexible rubber lobe for sealed valve body, described flexible rubber lobe is connected with rubber clack opening control device.
Further, described rubber clack opening control device comprises gag lever post, on described valve body, both sides have two coaxial installing holes, rotating shaft is provided with in described two installing holes, described rotating shaft connects described gag lever post one end, the described gag lever post other end withstands described flexible rubber flap, and described rotating shaft is electrically connected with Vidacare corp.
Further, described flexible rubber lobe comprises the wear-resisting connecting band be wound in outside back shaft, the steel plate frame be connected with wear-resisting connecting band bottom, the rubber tile be wrapped in outside wear-resisting connecting band and steel plate frame, described wear-resisting connecting band comprises interconnective canned paragraph and linkage section, described canned paragraph top is fixedly connected with back shaft, described linkage section bottom is connected with steel plate frame, and the center of rotation of described flexible rubber lobe is positioned on described linkage section.
Further, described debris retaining floating drum comprises cylindrical shape floating drum, and the hollow and both ends of the surface of described floating drum are closed, and described floating drum Transverse to the flow direction horizontal and length are across well body two side, described floating drum both ends of the surface are fixed with pivoted arm, and described pivoted arm is hinged on described well body sidewall respectively.
Further, described pivoted arm is fixedly connected with described floating drum end top, and cylinder face, described floating drum top is provided with slag trap.
Further, described multistage adjustable overflow plate comprises fixing watertight shutter, the two ends of described fixing watertight shutter are respectively equipped with longitudinal sliding groove structure, are provided with lifter plate in described sliding groove structure, are sealed and matched between described lifter plate and described fixing watertight shutter and described sliding groove structure.
Further, described sliding groove structure height is higher than the height of described fixing watertight shutter, and being less than described fixing watertight shutter and described lifter plate height sum, the height of described lifter plate is lower than the height of described fixing watertight shutter, and described sliding groove structure top is provided with lifter plate limited block.
Further, described sliding groove structure comprises longitudinal riser, the front end of described longitudinal riser is connected with the first horizontal riser, the rear end of described longitudinal riser is connected with the second horizontal riser, the end laminating of described lifter plate is placed between described first horizontal riser and described second horizontal riser, and leaves anti-block gap between the end of described lifter plate and described longitudinal riser.
Further, the top of described lifter plate is connected with force transmission shaft, and described force transmission shaft is connected with drive unit.
Accompanying drawing explanation
Fig. 1 is a kind of electronic combined system pipe network catchpit plan structure schematic diagram.
Fig. 2 is longitudinal section structure schematic diagram of Fig. 1.
Fig. 3 is the structural representation of the adjustable swing type rubber flap check valve that dams.
Fig. 4 is the structural representation of the rubber clack opening control device in Fig. 3;
Fig. 5 is the side-looking structural representation of flexible rubber lobe;
Fig. 6 is the main TV structure schematic diagram of flexible rubber lobe;
Fig. 7 is the partial enlargement structural representation of hermetically-sealed construction in Fig. 5.
Fig. 8 is the structural representation of debris retaining floating drum in Fig. 1.
Fig. 9 is the side structure schematic diagram of Fig. 8.
Figure 10 is the structural representation of multistage adjustable overflow plate in Fig. 1.
Figure 11 is the cross-sectional view of the side of Figure 10.
Figure 12 is the plan structure schematic diagram of Figure 10.
Figure 13 is the structure for amplifying schematic diagram at sliding groove structure place in Figure 10.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, is convenient to more clearly understand the present invention, but they do not form restriction to the present invention.
As Fig. 1, shown in Fig. 2, a kind of electronic combined system pipe network catchpit, comprise well body 1, described well body 1 left end is provided with confluence of rainwater and sewage water inlet pipe 2, described well body 1 right-hand member is provided with the outlet pipe 3 be communicated with natural water, the runner of described well body 1 is provided with from left to right successively just rain overflow weir 10, the height of first rain overflow weir 10 is the liquid level that interception ratio is corresponding, debris retaining floating drum 5, and multistage adjustable overflow plate 6, sewage intercepting sewer 4 is provided with in the bottom of described confluence of rainwater and sewage water inlet pipe 2 and described well body sidewall just between rain overflow weir 10, just rain intercepting sewer 9 is provided with in the bottom of described well body 1 sidewall just between rain overflow weir 10 and described multistage adjustable overflow plate 6, described sewage intercepting sewer 4 and described just rain intercepting sewer 9 are respectively equipped with the electronic flap valve 7 that dams, riffler 8 is provided with bottom described well body 1.
In such scheme, composition graphs 3, shown in Fig. 4, the electronic flap valve 7 that dams is for a kind of adjustable swing type rubber flap check valve that dams, comprise valve body 601, the valve gap 602 being arranged on the runner in valve body 601 and being arranged on valve body 601, in described valve body 601, upper end is provided with groove near between the valve body 601 and valve gap 602 of water inlet one end, the second groove that the first groove that groove set between valve body 601 and valve gap 602 is offered by described valve body 601 upper surface and described valve gap 602 lower surface are offered surrounds jointly, back shaft 603 is provided with in described groove, described back shaft 603 is fixedly connected with the flexible rubber lobe 604 for sealed valve body 601, described flexible rubber lobe 604 is connected with rubber clack opening control device, described rubber clack opening control device comprises gag lever post 605, on described valve body 601, both sides have two coaxial installing holes 606, rotating shaft 607 is provided with in described two installing holes 606, described rotating shaft 607 connects described gag lever post 605 one end, described gag lever post 605 other end withstands described flexible rubber flap 604, and described rotating shaft 607 is electrically connected with Vidacare corp 608.The rotating shaft 607 at described gag lever post 605 two ends is provided with jump ring 614.Be connected by key 615 between described gag lever post 605 and rotating shaft 607.One end of described rotating shaft 607 is electrically connected with Vidacare corp 608 after stretching out the installing hole 606 of side on valve body 601, the other end of described rotating shaft 607 is placed in the installing hole 606 of opposite side on valve body 601, be provided with stifle 616 outside installing hole 606, described stifle 616 is tightly connected by screw and valve body 601.Described Vidacare corp 608 is fixedly connected on the side of valve body 601 outside.Be provided with copper sheathing 617 in described installing hole 606, described rotating shaft 607 two ends are inserted in copper sheathing 617 respectively.This programme is equipped with Vidacare corp 608 in the side of valve body 601, Vidacare corp 608 drives rotating shaft 607 to rotate, the gag lever post 605 that rotarily drives of rotating shaft 607 rotates, and then the aperture realizing flexible rubber lobe 604 regulates, above-mentioned rubber clack opening control device is a kind of rotary opening control device, can also be designed to the various structures forms such as ascending/decending.
In such scheme, shown in composition graphs 5, Fig. 6, described flexible rubber lobe 604 comprises the wear-resisting connecting band 609 be wound in outside back shaft 603, the steel plate frame 610 be connected with wear-resisting connecting band 609 bottom, is wrapped in wear-resisting connecting band 609 and the rubber tile 611 outside steel plate frame 610.Described wear-resisting connecting band 609 comprises interconnective canned paragraph 612 and linkage section 613, described canned paragraph 612 top is fixedly connected with back shaft 603, described linkage section 613 bottom is connected with steel plate frame 610, and the center of rotation of described flexible rubber lobe 604 is positioned on linkage section 613.Described wear-resisting connecting band 609 material is nylon cloth.Described steel plate frame 610 is the toroidal structure that upper end is connected with wear-resisting connecting band 609.
In such scheme, shown in composition graphs 6, Fig. 7, between described flexible rubber lobe 604 and valve body 601, be provided with hermetically-sealed construction 618.Described hermetically-sealed construction 618 is the first protruding ring 6181 and the second protruding ring 6182 side that contacts with valve body 601 of flexible rubber lobe 604 protruding from flexible rubber lobe 604, is provided with groove 6183 between described first protruding ring 6181 and the second protruding ring 6182; The most outer of described first protruding ring 6181 is mutually vertical with described valve body 601; The thickness of the projection of described second protruding ring 6182 is greater than the thickness of the first protruding ring 6181, described second protruding ring 6182 is in tilted layout to the direction along flexible rubber lobe 3 outer, and the flexible rubber lobe 604 of the rear end of described second protruding ring 6182 is provided with the bending activity space 6184 for the second protruding ring 6182.When flexible rubber lobe 604 is in valve body contact, the air in groove 6183 is extruded, and now can realize ultralow pressure sealing.Hermetically-sealed construction 618 between flexible rubber lobe 604 and valve body 601, when can realize low pressure (or with no pressure), deadweight only by flap and flexible rubber lobe 604 just can close sealing, and not needing from gravity of simultaneously sealing is very large, and the unlatching damage by water of valve can be allowed but very low; When having high pressure after valve, the hermetically-sealed construction of flexible rubber lobe is in regime of elastic deformation, simultaneously.For the activity space 6184 that the second protruding ring 6182 bends, under can reaching maximum working pressure when can ensure high pressure sealing, flexible rubber lobe is indeformable.
In such scheme, composition graphs 8, shown in Fig. 9, debris retaining floating drum 5 comprises the cylindrical shape floating drum 202 in well body 1, described floating drum 202 is hollow and both ends of the surface closed, floating drum 202 is two halves formula structure, between two halves, bolt connects, accompany flexible sealing plate 205 therebetween, the two ends of described flexible sealing plate 205 bend respectively to extend on described floating drum 202 end face and form pushing off the slag block 209, leak from the two end faces of floating drum 202 to prevent scum silica frost, described floating drum 202 Transverse to the flow direction horizontal and length are across well body 1 two side, described floating drum 202 both ends of the surface top is fixed with pivoted arm 203, the head end of pivoted arm 203 is connected with floating drum 202 end face bolt, the two side of described pond body 201 is provided with fixed head 206, the end of described pivoted arm 203 is hinged on respectively by turning cylinder 207 on the fixed head 206 of described pond body 201 sidewall, cylinder face, described floating drum 202 top is provided with the slag trap 204 for strengthening pushing off the slag effect.Wherein, flexible sealing plate 205 is rubber tile, floating drum 202 is floating and is falling in process, need to carry out friction sealed with pond body 201 sidewall metope, the flexible rubber dam of bending is adopted between rubber tile and sidewall, effectively self-packingly make the frictional force between floating drum and sidewall very little in formation simultaneously, thus be conducive to resistance when reducing floating drum motion.
In such scheme, shown in Figure 10, multistage adjustable overflow plate 6 is a kind of ascending/decending height adjustable overflow plate, it comprises the fixing watertight shutter 402 be fixed on well body 1, the end of fixing watertight shutter 402, is along adopting water-repellent paint to seal with body ground, pond, the two ends of described fixing watertight shutter 402 are respectively equipped with longitudinal sliding groove structure 403, lifter plate 404 is provided with in described sliding groove structure 403, the two ends, top of described lifter plate 404 are connected with force transmission shaft 409 respectively, described force transmission shaft 409 is connected with drive unit 410, force transmission shaft 409 is fixed by screws on lifter plate 404, drive unit 410 can drive force transmission shaft 409 to move up and down, the side described lifter plate 404 being pressed close to described fixing watertight shutter 402 has groove 407, weather strip 408 is provided with in described groove 407, the vertical slot 4071 that described groove 407 comprises two ends and the translot 4072 be communicated with described vertical slot 4071 bottom, described weather strip 408 makes to be sealed and matched between described lifter plate 404 and described fixing watertight shutter 402 and described sliding groove structure 403, described weather strip 408 is hollow rubber seal preferably, described sliding groove structure 403 height is higher than the height of described fixing watertight shutter 402, and be less than described fixing watertight shutter 402 and described lifter plate 404 height sum, the height of described lifter plate 404 is lower than the height of described fixing watertight shutter 402, described sliding groove structure 403 top is provided with lifter plate limited block 405(as shown in figure 11), described sliding groove structure 403 comprises longitudinal riser 4031, the front end of described longitudinal riser 4031 is connected with the first horizontal riser 4032, the rear end of described longitudinal riser 4031 is connected with the second horizontal riser 4033, described second horizontal riser 4033 is parallel with described first horizontal riser 4032, and described second horizontal riser 4033 is longer than described first horizontal riser 4032, the end laminating of described lifter plate 404 is placed between described first horizontal riser 4032 and described second horizontal riser 4033, and leave anti-block gap 4034(between the end of described lifter plate 404 and described longitudinal riser 4031 as Figure 12, shown in Figure 13), described second horizontal riser 4033 aligns with the end face of described fixing watertight shutter 402, sliding groove structure 403 is fixed on the side wall of well body 1 by installing plate 413 with stone bolt, and and sealed by water-repellent paint between side wall, water gap 411 is crossed along being provided with first in the top of described fixing watertight shutter 402, water gap 412 is crossed along being provided with second in the top of described lifter plate 404.
This catchpit is arranged on confluence of rainwater and sewage water inlet pipe and is received between natural water, and its course of work is as follows: when dry season, sewage intercepting sewer 4 dam confluence of rainwater and sewage water inlet pipe 2 discharge sewage enter Wastewater Treatment Plant, when raining, when liquid level in catchpit does not exceed liquid level corresponding to sewage intercepting sewer 4 interception ratio, the electronic flap valve that dams on sewage intercepting sewer 4 keeps full-gear, rainwater drains into Wastewater Treatment Plant by sewage intercepting sewer 4, when the liquid level in catchpit exceedes this liquid level, rainwater covers just rain overflow weir 10, the electronic flap valve that dams at first rain intercepting sewer 9 place is opened, sewage intercepting sewer 4 place the electronic flap valve that dams slowly cuts out along with the rising of liquid level, rainwater is discharged by first rain intercepting sewer 9, when liquid level lower than during the liquid level that interception ratio is corresponding or the first rain of setting time is up time, the signal at stop that the electronic flap valve that dams at first rain intercepting sewer 9 place is provided by control room, when liquid level exceedes multistage adjustable overflow plate 6 height, rainwater directly overflows to natural water, when water level exceedes warning height, the height of multistage adjustable overflow plate 6 need be reduced, with increasing water discharge capacity.
The present invention installs the electronic flap valve that dams respectively at sewage intercepting sewer and first rain mouth of pipe place of damming, by accurately controlling the aperture of the electronic flap valve that dams, achieve accurately damming to sewage and early-stage rainwater, the rainwater that simultaneously also prevent sewage and early-stage rainwater pipeline flows backwards; Floating thing in rainwater before entering natural water with the debris retaining floating drum interception across whole well body runner and suspension, this debris retaining floating drum debris retaining is effective, avoids clogging; The multistage adjustable overflow plate of the present invention replaces existing fixed weir or gate, and the height of this multistage adjustable overflow plate can regulate on a large scale, achieves discharge level height adjustable; Present invention achieves effective separation of early-stage rainwater, allow early-stage rainwater all dam to greatest extent and be sent to Wastewater Treatment Plant after storm detention tank.
Claims (8)
1. an electronic combined system pipe network catchpit, comprise well body (1), described well body (1) left end is provided with confluence of rainwater and sewage water inlet pipe (2), described well body (1) right-hand member is provided with the outlet pipe (3) be communicated with natural water, it is characterized in that: the runner of described well body (1) is provided with from left to right successively just rain overflow weir (10), debris retaining floating drum (5), and multistage adjustable overflow plate (6), sewage intercepting sewer (4) is provided with in the bottom of described confluence of rainwater and sewage water inlet pipe (2) and described well body sidewall just between rain overflow weir (10), just rain intercepting sewer (9) is provided with in the bottom of described well body (1) sidewall just between rain overflow weir (10) and described multistage adjustable overflow plate (6), described sewage intercepting sewer (4) and described just rain intercepting sewer (9) are respectively equipped with the electronic flap valve that dams (7), the described electronic flap valve that dams (7) is the adjustable swing type rubber flap check valve that dams, comprise valve body (601), the runner arranged in valve body (601) and the valve gap (602) be arranged on valve body (601), described valve body (601) interior upper end is provided with groove near between the valve body (601) and valve gap (602) of water inlet one end, back shaft (603) is provided with in described groove, described back shaft (603) is fixedly connected with the flexible rubber lobe (604) for sealed valve body (601), described flexible rubber lobe (604) is connected with rubber clack opening control device, described flexible rubber lobe (604) comprises and is wound in back shaft (603) wear-resisting connecting band (609) outward, the steel plate frame (610) be connected with wear-resisting connecting band (609) bottom, be wrapped in wear-resisting connecting band (609) and steel plate frame (610) rubber tile outward (611), described wear-resisting connecting band (609) comprises interconnective canned paragraph (612) and linkage section (613), described canned paragraph (612) top is fixedly connected with back shaft (603), described linkage section (613) bottom is connected with steel plate frame (610), the center of rotation of described flexible rubber lobe (604) is positioned on described linkage section (613).
2. electronic combined system pipe network catchpit according to claim 1, it is characterized in that: described rubber clack opening control device comprises gag lever post (605), the upper both sides of described valve body (601) have two coaxial installing holes (606), rotating shaft (607) is provided with in described two installing holes (606), described rotating shaft (607) connects described gag lever post (605) one end, described gag lever post (605) other end withstands described flexible rubber lobe (604), and described rotating shaft (607) is electrically connected with Vidacare corp (608).
3. electronic combined system pipe network catchpit according to claim 1, it is characterized in that: described debris retaining floating drum (5) comprises cylindrical shape floating drum (202), described floating drum (202) is hollow and both ends of the surface closed, described floating drum (202) Transverse to the flow direction horizontal and length are across well body (301) two side, described floating drum (202) both ends of the surface are fixed with pivoted arm (203), described pivoted arm (203) is hinged on described well body (301) sidewall respectively.
4. electronic combined system pipe network catchpit according to claim 3, it is characterized in that: described pivoted arm (203) is fixedly connected with described floating drum (202) end top, cylinder face, described floating drum (202) top is provided with slag trap (204).
5. electronic combined system pipe network catchpit according to claim 1, it is characterized in that: described multistage adjustable overflow plate (6) comprises fixing watertight shutter (402), the two ends of described fixing watertight shutter (402) are respectively equipped with longitudinal sliding groove structure (403), be provided with lifter plate (404) in described sliding groove structure (403), be sealed and matched between described lifter plate (404) and described fixing watertight shutter (402) and described sliding groove structure (403).
6. electronic combined system pipe network catchpit according to claim 5, it is characterized in that: described sliding groove structure (403) height is higher than the height of described fixing watertight shutter (402), and be less than described fixing watertight shutter (402) and described lifter plate (404) height sum, the height of described lifter plate (404) is lower than the height of described fixing watertight shutter (402), and described sliding groove structure (403) top is provided with lifter plate limited block (405).
7. the electronic combined system pipe network catchpit according to claim 5 or 6, it is characterized in that: described sliding groove structure (403) comprises longitudinal riser (4031), the front end of described longitudinal riser (4031) is connected with the first horizontal riser (4032), the rear end of described longitudinal riser (4031) is connected with the second horizontal riser (4033), the end laminating of described lifter plate (404) is placed between described first horizontal riser (4032) and described second horizontal riser (4033), and leave anti-block gap (4034) between the end of described lifter plate (404) and described longitudinal riser (4031).
8. the electronic combined system pipe network catchpit according to claim 5 or 6, it is characterized in that: the top of described lifter plate (404) is connected with force transmission shaft (409), and described force transmission shaft (409) is connected with drive unit (410).
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| CN201410060134.2A CN103835363B (en) | 2014-02-21 | 2014-02-21 | Electric combined system pipe network intercepting well |
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Cited By (1)
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| CN106906892A (en) * | 2017-02-13 | 2017-06-30 | 同济大学 | It is a kind of embed controllable sewage dam pond drainage pumping plant drought stream and just rain cuts dirty system |
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| CN105756177B (en) * | 2016-04-19 | 2019-07-19 | 武汉圣禹排水系统有限公司 | Hydraulic-floating non-return Vatch basin |
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| CN107740485A (en) * | 2017-09-29 | 2018-02-27 | 广州市诚铁监理咨询有限公司 | A kind of rain dirt part flow arrangement |
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| CN103835363A (en) | 2014-06-04 |
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