CN109723134A - Novel flow-stopping pumping plant - Google Patents
Novel flow-stopping pumping plant Download PDFInfo
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- CN109723134A CN109723134A CN201811562365.8A CN201811562365A CN109723134A CN 109723134 A CN109723134 A CN 109723134A CN 201811562365 A CN201811562365 A CN 201811562365A CN 109723134 A CN109723134 A CN 109723134A
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- pond
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- pumping plant
- novel flow
- oil stain
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Abstract
The present invention relates to the technical fields of drainage pipeline project, more particularly, to a kind of Novel flow-stopping pumping plant.A kind of Novel flow-stopping pumping plant, including module of shutting off, crush module and pressure-increasing unit module, the module of shutting off includes intercepting sewer and the pond of shutting off being connected with intercepting sewer, the module that crushes includes the crush cell positioned at pond side of shutting off, pressure-increasing unit module includes being provided with partition wall between the conveying pond of crush cell side, crush cell and conveying pond, is equipped with crush type grid on partition wall, proof submersible sand discharging pump is equipped in the conveying pond, the water outlet of the proof submersible sand discharging pump is connected with drainpipe.After sewage is collected by intercepting sewer into pond of shutting off, continues transported in crush cell, sundries rubbish is crushed by crush type grid, to protect the other equipment in pumping plant to run well.The broken sewage of sundries is extracted by proof submersible sand discharging pump and is discharged by drainpipe.
Description
Technical field
The present invention relates to the technical fields of drainage pipeline project, more particularly, to a kind of Novel flow-stopping pumping plant.
Background technique
The sewage main pipe that shuts off is that will to drain area with a sewage main pipe parallel and near to river shoreline all
Directly shut off to the main pipe or branch pipe of discharge into water sewage, and so that sewage is flowed to sewage treatment plant along the pipe and handled or defeated
It is sent to the pipeline that another discharge area is discharged into water body again after simple process.
In existing interflow tubing giving sufficient strength dam project, the row's of mostly using mouth and Vatch basin correspondent method shut off or by multiple rows mouthful greatly
Shut off after series connection, but since row's mouth is located at pipe-line system end mostly, causes intercepting sewer tube bottom absolute altitude lower, gravity stream can not be leaned on
Access sewage conduct.
Summary of the invention
The object of the present invention is to provide a kind of Novel flow-stopping pumping plants, its advantage lies in being able to lower in the absolute altitude for the pipeline that shuts off
When conveying sewage enter sewage conduct.
Foregoing invention purpose of the invention has the technical scheme that a kind of Novel flow-stopping pumping plant, packet
Module of shutting off, crushing module and pressure-increasing unit module, the module of shutting off is included to include intercepting sewer and be connected with intercepting sewer
Shut off pond, the module that crushes includes the crush cell positioned at pond side of shutting off, and pressure-increasing unit module includes being located at crush cell side
Conveying pond, crush cell and conveying pond between be provided with partition wall, crush type grid is installed on partition wall, is equipped in the conveying pond
The water outlet of proof submersible sand discharging pump, the proof submersible sand discharging pump is connected with drainpipe.
By using above-mentioned technical proposal, after sewage is collected by intercepting sewer into pond of shutting off, crushing is continued transported to
In pond, sundries rubbish is crushed by crush type grid, to protect the other equipment in pumping plant to run well.Sundries is broken
Sewage afterwards is extracted by proof submersible sand discharging pump and is discharged by drainpipe.Since sewage row can will be pressurized by proof submersible sand discharging pump
Out, therefore sewage can be conveyed when absolute altitude is lower.
The present invention is further arranged to: the second liquid level sensor, second liquid level are equipped on the inner wall of the conveying pond
Sensor is responded when conveying the liquid level in pond and being higher than the water inlet open height of proof submersible sand discharging pump, and the proof submersible sand discharging pump is the
Two liquid level sensors start when responding.
By using above-mentioned technical proposal, and only, the liquid level in conveying pond is higher than the water inlet of proof submersible sand discharging pump
When, just meeting response control submersible sewage pump startup draws water the second liquid level sensor, avoids proof submersible sand discharging pump zero load impaired.
The present invention is further arranged to: one end in the pond of shutting off far from intercepting sewer is equipped with the overflow for being communicated to river
Pipe.
By using above-mentioned technical proposal, the more clean water overflowed is directly discharged to by river by overflow pipe
It is interior, reduce the pressure of sewage treatment.
The present invention is further arranged to: being built in the pond of shutting off and is formed crest of weir, it is electronic that the crest of weir is equipped with bottom-open type
Weir gate, crest of weir and the cross-section pond of entirely shutting off of the electronic weir gate of bottom-open type form overflow launder, and bottom-open type electronic weir gate shuts off pond when opening
It is connected with overflow launder, the overflow pipe is located at the electronic weir gate of bottom-open type backwards to the side of intercepting sewer.
By using above-mentioned technical proposal, pond of shutting off is separated by the electronic weir gate of bottom-open type and crest of weir cooperation, in bottom-open type
Water flow can't be flowed out from overflow pipe when electronic weir gate is closed, and in fine day, be sewage into the water flow shut off in pond, avoided
Sewage is directly discharged in river.
The present invention is further arranged to: the position in the pond of shutting off between crest of weir and intercepting sewer, which is equipped with, cuts dirty group
Part, the pond of shutting off are separated to form sump and clean water tank by cutting dirty component, and described section of dirty component includes being located at bottom of pond of shutting off
The mud in portion intercepts bank.
By using above-mentioned technical proposal, the mud that bank stops sewage trench bottom is intercepted by mud, avoids sump bottom
The mud in portion enters in clean water tank.
The present invention is further arranged to: described section of dirty component further includes the oil stain intercepting plate intercepted above bank positioned at mud,
The upper surface of the oil stain intercepting plate and the pond face in pond of shutting off are concordant.
By using above-mentioned technical proposal, the greasy dirt for swimming in the water surface is intercepted by oil stain intercepting plate, avoids a large amount of greasy dirts
Direct emission is into river.
The present invention is further arranged to: the oil stain intercepting plate face is equipped with the first liquid level sensor to sump side,
First response point of the first liquid level sensor is located at the height and position in the middle part of oil stain intercepting plate, the second sound of the first liquid level sensor
The height and position positioned at oil stain intercepting plate lower end surface should be put；Bottom-open type electricity when the sewage level to shut off in pond is higher than the first response point
Dynamic weir gate is opened, and the electronic weir gate of bottom-open type is closed when the sewage level shut off in pond is lower than the second response point.
By using above-mentioned technical proposal, bottom-open type motor-driven valve is controlled by being set as of detecting of the first liquid level sensor
The opening and closing of door.Only when heavy rain weather, the water level to shut off in pond can be higher than the height of oil stain intercepting plate half, and at this time
It has passed through the stage at rainfall initial stage, therefore the water at this time to shut off in pond is more clean, and supernatant greasy dirt can be by greasy dirt
Catching sheet stops, and will not enter in overflow pipe.When liquid level is lower than the lower end position of oil stain intercepting plate, greasy dirt can enter clean water tank
It is interior, at this time close the electronic weir gate of bottom-open type.
The present invention is further arranged to: the lower end surface height of the oil stain intercepting plate is higher than overflow pipe.
By using above-mentioned technical proposal, the height that overflow pipe is arranged is lower, so that have biggish hydraulic pressure at overflow pipe,
Drainage effect is more preferable.
The present invention is further arranged to: the height of the oil stain intercepting plate is the half of tank depth of shutting off；The sump
Area summation with clean water tank is ten times of overflow groove area.
By using above-mentioned technical proposal, when so that the electronic weir gate of bottom-open type being opened, water level will not be decreased below moment
The position of oil stain intercepting plate avoids greasy dirt from being discharged from overflow pipe.
The present invention is further arranged to: the oil stain intercepting plate and mud intercept and are equipped with filter screen between bank.
By using above-mentioned technical proposal, the impurity rubbish in water is intercepted by filter screen, a large amount of impurity rubbish is avoided to arrange
It is put into river.
In conclusion advantageous effects of the invention are as follows:
1. being crushed by crush type grid to sundries rubbish, to protect the other equipment in pumping plant to run well, sundries is broken
Sewage after broken is extracted by proof submersible sand discharging pump and is discharged by drainpipe, due to that can will be pressurized sewage by proof submersible sand discharging pump
Discharge, therefore sewage can be conveyed when absolute altitude is lower；
2. intercepting the mud that bank stops sewage trench bottom by mud, the mud of sewage trench bottom is avoided to enter in clean water tank, led to
It crosses oil stain intercepting plate and intercepts and swim in the greasy dirt of the water surface, avoid a large amount of greasy dirt direct emissions into river.
Detailed description of the invention
Fig. 1 is the top view figure of embodiment；
Fig. 2 is structural schematic diagram in embodiment；
Fig. 3 is the structural schematic diagram that dirty component is cut in embodiment.
Appended drawing reference: 1, module of shutting off；2, module is crushed；3, pressure-increasing unit module；4, intercepting sewer；5, shut off pond；6, weir
Mouthful；7, the electronic weir gate of bottom-open type；8, overflow launder；9, overflow pipe；10, dirty component is cut；11, sump；12, clean water tank；13, mud
Intercept bank；14, oil stain intercepting plate；15, filter screen；16, the first liquid level sensor；17, partition wall；18, crush cell；19, connecting tube；
20, crush type grid；21, pond is conveyed；22, proof submersible sand discharging pump；23, drainpipe；24, check valve；25, the second liquid level sensor.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
As shown in Figure 1, a kind of Novel flow-stopping pumping plant, including module 1 of shutting off, crushing module 2 and pressure-increasing unit module 3.
Sewage is intercepted by module 1 of shutting off, contains a large amount of solid impurity in sewage, is ground into solid impurity by crushing module 2
Powder, by pressure-increasing unit module 3 by sewage transport toward Sewage Disposal.
As shown in Figure 1, module 1 of shutting off is separate including intercepting sewer 4 and the pond 5 of shutting off being connected with intercepting sewer 4, pond 5 of shutting off
One end of intercepting sewer 4 builds to form crest of weir 6, and the electronic weir gate 7 of bottom-open type is equipped at crest of weir 6, electronic by crest of weir 6 and bottom-open type
The cross-section pond 5 of entirely shutting off of weir gate 7 forms overflow launder 8, and the Chi5Shui that only shuts off when the electronic weir gate 7 of bottom-open type is opened can just be flowed into
In overflow launder 8.Shut off and is connected between 5 bottom surface of pond of shutting off that there are certain distances on side wall of the pond 5 far from 4 one end of intercepting sewer
Overflow pipe 9.Overflow pipe 9 is connected with river, is directly entered in river by the water flow that overflow pipe 9 flows out.
As shown in Figures 2 and 3, the position in pond 5 positioned at crest of weir 6 and intercepting sewer 4 between of shutting off is provided with and cuts a dirt component 10,
Sump 11 and clean water tank 12 are separated to form by cutting a dirty component 10 pond 5 that will shut off.Cut dirty component 10 include mud intercept bank 13,
The oil stain intercepting plate 14 above bank 13 is intercepted positioned at mud, oil stain intercepting plate 14 and mud intercept and is equipped with filter screen between bank 13
15, the impurity that clean water tank 12 is flowed to from sump 11 is filtered by filter screen 15.The upper surface of oil stain intercepting plate 14 and pond 5 of shutting off
Pond face it is concordant, the height of oil stain intercepting plate 14 be shut off 5 depth of pond half and 14 lower end surface of oil stain intercepting plate height it is high
In the height of overflow pipe 9.Oil stain intercepting plate 14 is equipped with the first liquid level sensor 16 towards 11 side of sump, and the first liquid level passes
First response point of sensor 16 is located at the height and position at 14 middle part of oil stain intercepting plate, the second response point of the first liquid level sensor 16
Height and position positioned at 14 lower end surface of oil stain intercepting plate.Bottom-open type electricity when the sewage level to shut off in pond 5 is higher than the first response point
Dynamic weir gate 7 is opened, and the electronic weir gate 7 of bottom-open type is closed when the sewage level shut off in pond 5 is lower than the second response point.11 He of sump
The area summation of clean water tank 12 is ten times of 8 area of overflow launder.
As shown in Fig. 2, the side enclosure wall indent of 11 face intercepting sewer of sump 4, and have partition wall 17 in indent block, lead to
The enclosure wall for crossing partition wall 17 and concave section forms crush cell 18, and crush cell 18 passes through connecting tube close to the position of bottom of pond and pond 5 of shutting off
19 are connected.The crush type grid 20 that module 2 includes crush cell 18 and is mounted on partition wall 17 is crushed, crush type grid 20 is passed through
Sundries rubbish is crushed, to protect the other equipment in pumping plant to run well.
As shown in Figure 1, crush cell 18 is shut off backwards, the side in pond 5 is connected with conveying pond 21, and sewage passes through crush type grid
It is entered after 20 in conveying pond 21.Pressure-increasing unit module 3 includes conveying pond 21 and the proof submersible sand discharging pump in conveying pond 21
22, the water outlet of proof submersible sand discharging pump 22 is connected with drainpipe 23, will convey the sewage transport in pond 21 by proof submersible sand discharging pump 22
It goes out.Check valve 24 is installed on drainpipe 23 so as not to the sewage in drainpipe 23 blow back into conveying pond 21 in.Convey pond 21
Second liquid level sensor 25 is installed, liquid level of second liquid level sensor 25 in conveying pond 21 is higher than diving row on inner wall
It is responded when the water inlet open height of dirt pump 22.And only when the second liquid level sensor 25 responds, control proof submersible sand discharging pump 22 starts, and keeps away
It is unloaded impaired to exempt from proof submersible sand discharging pump 22.
Specific work process:
It guides water flow to enter by intercepting sewer 4 to shut off in pond 5, by 16 sensed water level of the first liquid level sensor, shut off in pond 5
Water level opens the electronic weir gate 7 of bottom-open type when being higher than the height of 14 half of oil stain intercepting plate.Rainfall initial stage is at this time had been subjected to
In the stage, the water to shut off in pond 5 is more clean, and supernatant greasy dirt can be stopped that overflow pipe will not be entered by oil stain intercepting plate 14
In 9.When liquid level is decreased below the lower end surface position of oil stain intercepting plate 14, the electronic weir gate 7 of bottom-open type is at this time closed.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of Novel flow-stopping pumping plant, including module of shutting off (1), crushing module (2) and pressure-increasing unit module (3), feature
Be: the module of shutting off (1) includes intercepting sewer (4) and the pond of shutting off (5) being connected with intercepting sewer (4), the crushing module (2)
Crush cell (18) including being located at pond (5) side of shutting off, pressure-increasing unit module (3) include the conveying positioned at crush cell (18) side
Pond (21) is provided with partition wall (17) between crush cell (18) and conveying pond (21), and partition wall is equipped with crush type grid on (17)
(20), proof submersible sand discharging pump (22) are equipped in the conveying pond (21), the water outlet of the proof submersible sand discharging pump (22) is connected with draining
It manages (23).
2. Novel flow-stopping pumping plant according to claim 1, it is characterized in that: being equipped with second on conveying pond (21) inner wall
Liquid level sensor (25), liquid level of second liquid level sensor (25) in conveying pond (21) are higher than proof submersible sand discharging pump
(22) it is responded when water inlet open height, the proof submersible sand discharging pump (22) starts when the second liquid level sensor (25) respond.
3. Novel flow-stopping pumping plant according to claim 1, it is characterized in that: far from intercepting sewer (4) in the pond of shutting off (5)
One end is equipped with the overflow pipe (9) for being communicated to river.
4. Novel flow-stopping pumping plant according to claim 3 forms crest of weir it is characterized in that: building in the pond of shutting off (5)
(6), the crest of weir (6) is equipped with the electronic weir gate of bottom-open type (7), crest of weir (6) and the electronic weir gate of bottom-open type (7) is cross-section entirely shuts off
Pond (5) forms overflow launder (8), and pond (5) of shutting off is connected with overflow launder (8) when the electronic weir gate of bottom-open type (7) is opened, the overflow
Pipe (9) is located at side of the electronic weir gate of bottom-open type (7) backwards to intercepting sewer (4).
5. Novel flow-stopping pumping plant according to claim 4, it is characterized in that: being located at crest of weir (6) in the pond of shutting off (5) and cutting
Position between flow tube (4), which is equipped with, cuts dirty component (10), and the pond of shutting off (5) is separated to form sump by cutting dirty component (10)
(11) and clean water tank (12), described section of dirty component (10) include that the mud positioned at pond (5) bottom of shutting off intercepts bank (13).
6. Novel flow-stopping pumping plant according to claim 5, it is characterized in that: described section of dirty component (10) further includes being located at mud
The oil stain intercepting plate (14) above bank (13) is intercepted, the upper surface of the oil stain intercepting plate (14) and the pond face in pond (5) of shutting off are flat
Together.
7. Novel flow-stopping pumping plant according to claim 6, it is characterized in that: the oil stain intercepting plate (14) is towards sump
(11) side is equipped with the first liquid level sensor (16), and the first response point of the first liquid level sensor (16) is located at oil stain intercepting plate
(14) height and position in the middle part of, the second response point of the first liquid level sensor (16) are located at the height of oil stain intercepting plate (14) lower end surface
Spend position；The electronic weir gate of bottom-open type (7) is opened when the sewage level to shut off in pond (5) is higher than the first response point, in pond of shutting off (5)
Sewage level be lower than the second response point when the electronic weir gate of bottom-open type (7) close.
8. Novel flow-stopping pumping plant according to claim 7, it is characterized in that: the lower end surface height of the oil stain intercepting plate (14)
Higher than overflow pipe (9).
9. Novel flow-stopping pumping plant according to claim 8, it is characterized in that: the height of the oil stain intercepting plate (14) is to shut off
The half of pond (5) depth；The area summation of the sump (11) and clean water tank (12) is ten times of overflow launder (8) area.
10. Novel flow-stopping pumping plant according to claim 6, it is characterized in that: the oil stain intercepting plate (14) and mud intercept
Filter screen (15) are installed between bank (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562365.8A CN109723134A (en) | 2018-12-20 | 2018-12-20 | Novel flow-stopping pumping plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562365.8A CN109723134A (en) | 2018-12-20 | 2018-12-20 | Novel flow-stopping pumping plant |
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| Publication Number | Publication Date |
|---|---|
| CN109723134A true CN109723134A (en) | 2019-05-07 |
Family
ID=66296984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811562365.8A Pending CN109723134A (en) | 2018-12-20 | 2018-12-20 | Novel flow-stopping pumping plant |
Country Status (1)
| Country | Link |
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| CN (1) | CN109723134A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439097A (en) * | 2019-07-30 | 2019-11-12 | 天津市市政工程设计研究院 | A kind of rainwater storage tank built jointly with drainage pumping plant |
| CN112127452A (en) * | 2020-09-08 | 2020-12-25 | 刘丽红 | Drainage system with cut dirty |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982622A (en) * | 2010-10-21 | 2011-03-02 | 清华大学 | Quality-graded collecting and purifying process and system for rainfall runoff |
| CN102182242A (en) * | 2011-04-06 | 2011-09-14 | 清华大学深圳研究生院 | Rainwater treatment system and rainwater treatment method |
| CN102808448A (en) * | 2012-08-14 | 2012-12-05 | 上海市城市建设设计研究总院 | Dry weather flow and initial rainwater multifunctional catch basin for combined network |
| CN202689172U (en) * | 2012-08-14 | 2013-01-23 | 上海市城市建设设计研究总院 | Combined system pipe network dry weather sewage and initial rainwater multifunctional intercepting well |
| CN105756181A (en) * | 2016-04-19 | 2016-07-13 | 武汉圣禹排水系统有限公司 | Dregs-blocking anti-backflow intercepting well |
| CN207633478U (en) * | 2017-11-20 | 2018-07-20 | 安徽水韵环保股份有限公司 | A kind of sewage closure works system |
-
2018
- 2018-12-20 CN CN201811562365.8A patent/CN109723134A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982622A (en) * | 2010-10-21 | 2011-03-02 | 清华大学 | Quality-graded collecting and purifying process and system for rainfall runoff |
| CN102182242A (en) * | 2011-04-06 | 2011-09-14 | 清华大学深圳研究生院 | Rainwater treatment system and rainwater treatment method |
| CN102808448A (en) * | 2012-08-14 | 2012-12-05 | 上海市城市建设设计研究总院 | Dry weather flow and initial rainwater multifunctional catch basin for combined network |
| CN202689172U (en) * | 2012-08-14 | 2013-01-23 | 上海市城市建设设计研究总院 | Combined system pipe network dry weather sewage and initial rainwater multifunctional intercepting well |
| CN105756181A (en) * | 2016-04-19 | 2016-07-13 | 武汉圣禹排水系统有限公司 | Dregs-blocking anti-backflow intercepting well |
| CN207633478U (en) * | 2017-11-20 | 2018-07-20 | 安徽水韵环保股份有限公司 | A kind of sewage closure works system |
Non-Patent Citations (2)
| Title |
|---|
| 上海世博会事物协调局 上海市城乡建设和交通委员会: "《上海世博会市政工程》", 31 May 2010, 上海科学技术出版社 * |
| 中国市政工程协会: "《海绵城市建设使用技术手册》", 30 June 2017, 中国建材工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439097A (en) * | 2019-07-30 | 2019-11-12 | 天津市市政工程设计研究院 | A kind of rainwater storage tank built jointly with drainage pumping plant |
| CN112127452A (en) * | 2020-09-08 | 2020-12-25 | 刘丽红 | Drainage system with cut dirty |
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Application publication date: 20190507 |