CN107854871B - A kind of layer-stepping sedimentation basin - Google Patents

A kind of layer-stepping sedimentation basin Download PDF

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Publication number
CN107854871B
CN107854871B CN201711108924.3A CN201711108924A CN107854871B CN 107854871 B CN107854871 B CN 107854871B CN 201711108924 A CN201711108924 A CN 201711108924A CN 107854871 B CN107854871 B CN 107854871B
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China
Prior art keywords
pond
band
cleaning shoe
slideway
pair
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CN201711108924.3A
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Chinese (zh)
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CN107854871A (en
Inventor
孙正甫
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Yangzhou Green Environmental Protection Equipment Co ltd
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Yangzhou Green Environmental Protection Equipment Co ltd
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Priority to CN201711108924.3A priority Critical patent/CN107854871B/en
Publication of CN107854871A publication Critical patent/CN107854871A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24Feed or discharge mechanisms for settling tanks
    • B01D21/2433Discharge mechanisms for floating particles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02Settling tanks with single outlets for the separated liquid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02Settling tanks with single outlets for the separated liquid
    • B01D21/04Settling tanks with single outlets for the separated liquid with moving scrapers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/18Construction of the scrapers or the driving mechanisms for settling tanks
    • B01D21/20Driving mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24Feed or discharge mechanisms for settling tanks
    • B01D21/2433Discharge mechanisms for floating particles
    • B01D21/2438Discharge mechanisms for floating particles provided with scrapers on the liquid surface for removing floating particles
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Abstract

A kind of layer-stepping sedimentation basin.It is simple to provide a kind of structure, so that skimming and scraping mud and working independently, improves the layer-stepping sedimentation basin of sedimentation effect.Including pond body, top one end of pond body is equipped with slag notch, and bottom end is equipped with sludge sump, and in the horizontal direction, slag notch and sludge sump are located at the both ends of pond body;It further include driving device, skimming mechanism and mud-scraping mechanism and lamination mechanism, the driving device includes driving motor, belt wheel one, belt wheel two, driving band and transmission belt, the mud-scraping mechanism includes cleaning shoe, the cleaning shoe is located at the bottom of pond body, the lamination mechanism includes lifting rope and strainer, the strainer is connected horizontally on the middle part of pond body by lifting rope, and for the strainer between transmission belt and cleaning shoe, the strainer is equipped with the slide opening for the sliding of L shape pull rod.The present invention is by skimming and scrapes mud simultaneously operation, non-interference, improves wastewater treatment efficiency, improves quality of sewage disposal.

Description

A kind of layer-stepping sedimentation basin
Technical field
The present invention relates to sewage disposal device more particularly to a kind of sedimentation basins.
Background technique
Sedimentation basin of sewage disposal, at work, one side bottom of pond can precipitate sludge, on the other hand, can produce on liquid level Raw many blisters, offscum.In the prior art, for the foam on the sludge of bottom of pond, liquid level, mud is scraped using operation band conveying is several Plate is handled, and cleaning shoe is fixedly connected on operation and takes, substantially with operation band plumbness.When work, existed by setting Eight belt wheels of quadrangle in pond, driving operation band from top to bottom rotary motion in sedimentation basin, take fixed company using movement The cleaning shoe connect is by pool bottom sludge scraping delivery to sludge sump, by liquid level offscum scraping delivery to slag notch.
But this structure is at runtime, since cleaning shoe is constantly in and is run with vertical/subvertical state, Cleaning shoe from the bottom to top, again from the bottom to top in this two sections of motion paths, cleaning shoe is in off working state in fact.But the non-work When making state, cleaning shoe can stir the sewage in pond in vertical direction, destroy sedimentation effect.
Application No. is 201210065220.3 filed in the applicant on March 13rd, 2012, entitled " a kind of skimming is scraped Mud machine " is packed up in vertical operational process by the way that closing device is arranged so that cleaning shoe opens during horizontal movement;Knot Structure is complicated, meanwhile, operation band is arranged in a ring, makes that circulation occurs in sedimentation basin, it is easy upwards to send the sediment of lower section, Reduce sedimentation effect.
Summary of the invention
The present invention is in view of the above problems, to provide a kind of structure simple, so that skimming and scraping mud and working independently, improves and precipitates The layer-stepping sedimentation basin of effect.
The technical scheme is that including pond body, top one end of pond body is equipped with slag notch, and bottom end is equipped with sludge Slot, in the horizontal direction, slag notch and sludge sump are located at the both ends of pond body;
It further include driving device, skimming mechanism and mud-scraping mechanism and lamination mechanism,
The driving device includes that driving motor, belt wheel one, belt wheel two, driving band and transmission belt, the driving motor are set In the top surface of pond body, the belt wheel one and belt wheel two are located at the both ends of the top liquid level of pond body or less position, the drive belt ring Around being connected on belt wheel one and belt wheel two, the transmission belt has upper band and lower band, and the driving motor passes through driving band driving Belt wheel one, the belt wheel one are located at the surface of sludge sump;
The skimming mechanism includes skimming plate, mounting base and elastomer, and the skimming plate is hinged on transmission by mounting base The upper band of band, the skimming plate are located at the top of upper band,
The elastomer is connected between skimming plate and upper band, and the elastomer is located at skimming plate towards the one of slag notch Side,
The top two sides of the skimming plate are respectively equipped with slide bar one, and the top two sides of the pond body are respectively equipped with slideway one, The slideway one includes a pair of parallel straight slideway one and a pair of symmetrically arranged connection road, and the connection road is connected to a pair Between the port of straight slideway one,
The slide bar one is adaptedly located in slideway one;
The mud-scraping mechanism includes cleaning shoe, and the cleaning shoe is located at the bottom of pond body, the lower band both ends of the transmission belt It is respectively equipped with L shape pull rod, the cleaning shoe is hinged on a pair of L-shaped pull rod,
The on both sides of the middle of the cleaning shoe is respectively equipped with slide bar two, and the two sides of the bottom of the pond body are respectively equipped with slideway two, The slide bar two is adaptedly located in slideway two, and the slideway two includes a pair of parallel straight slideway two, a pair of of straight slideway two Pass through inclined ramp between the two-port of two underface of belt wheel to connect, wherein the another port for the straight slideway two being located above is in Horn mouth;
The lamination mechanism includes lifting rope and strainer, and the strainer is connected horizontally on the middle part of pond body by lifting rope, described For strainer between transmission belt and cleaning shoe, the strainer is equipped with the slide opening for the sliding of L shape pull rod.
The mounting base includes pedestal, and the middle part of the pedestal has horizontal perforation, the perforation of bottom intermediate vertical, described to hang down The horizontal perforation of straight perforation connection, the upper band are located in horizontal perforation, and the bottom surface both ends of the pedestal are respectively equipped with free bearing one, institute It states free bearing one and is equipped with fraising one, the bottom of the skimming plate is equipped with a pair of of free bearing two, and the free bearing two is equipped with fraising two, and one Free bearing one is located between a pair of of free bearing two, is connected with hinged shaft in the fraising one and fraising two.
The bottom of the L shape pull rod is equipped with hinged shaft, and the cleaning shoe is equipped with corresponding fraising.
The connection road is arc-shaped, and the opening in a pair of arc-shaped connection road is oppositely arranged.
The connection road is in the shape of the letter V, and the opening in a pair of of V-shaped connection road is oppositely arranged.
Spring is equipped between the L shape pull rod and cleaning shoe, the spring is located at cleaning shoe towards the side of sludge sump.
It further include elastic drag rope and lower filter screen, the lower filter screen is connected on strainer by elastic drag rope, the lower filter screen Positioned at the lower section of strainer, the aperture of the lower filter screen is less than the aperture of strainer.
The present invention at work, is acted by driving device, and skimming mechanism and mud-scraping mechanism can be driven to move at the same time, skimmed Slag plate acts under the action of upper band, and cleaning shoe acts under the action of lower band.
When driving motor rotates forward,
Under the action of upper band, when the straight slideway one of skimming plate above is run towards slag notch, skimming movement is realized;
Under the action of lower band, L shape pull rod drives cleaning shoe, in the underlying straight slideway two of slide bar two on cleaning shoe It is run towards sludge sump, mud movement is scraped in realization;
When driving motor inverts,
Skimming plate is run in the straight slideway one of lower section, is reset to the connection road of one side of belt wheel, elastomer elastic force with And under the action of liquid level slag object resistance, progress into the straight slideway one of top;
Cleaning shoe and L shape pull rod are hinged, and when L shape pull rod is advanced with lower band, cleaning shoe is swung, and is continued on, and scrape Slide bar two in mud plate enters in the straight slideway two being located above from horn mouth, until operation to inclined ramp enters the straight cunning of lower section Road two is resetted.
The present invention is by skimming and scrapes mud simultaneously operation, non-interference, improves wastewater treatment efficiency, improves sewage treatment matter Amount.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention,
Fig. 2 is the structural schematic diagram of skimming mechanism in the present invention,
Fig. 3 is the structural schematic diagram of mud-scraping mechanism in the present invention,
Fig. 4 be in Fig. 3 B to structural schematic diagram,
Fig. 5 is the structural schematic diagram of the optimal enforcement mode of Fig. 4,
Fig. 6 be in Fig. 1 A to structural schematic diagram,
Fig. 7 is the movement state diagram of skimming mechanism in the present invention;
1 is pond body in figure, and 11 be sludge sump, and 12 be slag notch, and 13 be slideway one, and 131 be straight slideway one, and 132 be connection Road, 14 be slideway two, and 141 be straight slideway two, and 142 be inclined ramp, and 143 be horn mouth,
2 be driving device, and 21 be driving motor, and 22 be belt wheel one, and 23 be belt wheel two, and 24 be driving band, and 25 be transmission belt, 251 be upper band, and 252 be lower band,
3 be skimming mechanism, and 31 be skimming plate, and 32 be mounting base, and 321 be pedestal, and 3211 be horizontal perforation, and 3212 be vertical Perforation, 322 be free bearing one,
33 be elastomer, and 34 be slide bar one, and 35 be free bearing two,
4 be mud-scraping mechanism, and 41 be cleaning shoe, and 42 be L shape pull rod, and 421 be cross bar, and 422 be vertical bar, and 43 be slide bar two, 44 It is spring;
5 be lamination mechanism, and 51 be lifting rope, and 52 be strainer, and 53 be elastic drag rope, and 54 be lower filter screen;
Arrow represents the direction of action of transmission belt and skimming mechanism in Fig. 1, and arrow represents the movement side of cleaning shoe in Fig. 6 To arrow direction represents skimming plate traffic direction in Fig. 7.
Specific embodiment
As shown in figs. 1-7, including pond body 1, top one end of pond body is equipped with slag notch 12 to the present invention, and bottom end is equipped with dirt Mud groove 11, in the horizontal direction, slag notch and sludge sump are located at the both ends of pond body;
It further include driving device 2, skimming mechanism 3, mud-scraping mechanism 4 and lamination mechanism 5,
The driving device includes driving motor 21, belt wheel 1, belt wheel 2 23, drives band 24 and transmission belt 25, described Driving motor is located at the top surface of pond body, and the belt wheel one and belt wheel two are located at the both ends of the top liquid level of pond body or less position, institute Drive belt ring is stated around being connected on belt wheel one and belt wheel two, the transmission belt 25 has upper band 251 and lower band 252, the driving Motor is located at the surface of sludge sump by driving band driving pulley one, the belt wheel one;In work, driving motor positive and negative rotation Make, transmission belt sweeping action, to drive the skimming of skimming mechanism simultaneously, withdraw and (reset), mud-scraping mechanism is scraped mud, withdrawn (i.e. It resets).
The skimming mechanism 3 includes that skimming plate 31, mounting base 32 and elastomer 33(elastomer are spring etc.), the skimming Plate 31 is hinged on the upper band of transmission belt by mounting base, and the skimming plate is located at the top of upper band,
The elastomer 33 is connected between skimming plate and upper band, and the elastomer is located at skimming plate towards the one of slag notch Side,
The top two sides of the skimming plate are respectively equipped with slide bar 1, and the top two sides of the pond body are respectively equipped with slideway one 13, the slideway one includes a pair of parallel straight slideway 1 and a pair of symmetrically arranged connection road 132, the connection road It is connected between the port of a pair of of straight slideway one,
The slide bar one is adaptedly located in slideway one;
In the work of skimming mechanism,
When driving motor rotates forward, under the action of upper band, when the straight slideway one of skimming plate above is run towards slag notch, Realize skimming movement, at the connection road of operation to two side of belt wheel, the upper band in elastomer pulling force and driving motor overturning Pulling force under the action of, progress into the straight slideway one of lower section;
When driving motor inverts, skimming plate is run in the straight slideway one of lower section, is reset to the connection road of one side of belt wheel, Under the action of elastomer elastic force and liquid level slag object resistance, progress into the straight slideway one of top;
When rotating forward, included angle A between scraper plate and upper band, when reversion, the included angle B between scraper plate and upper band, included angle A is greater than folder Angle B;Included angle A is big, improves skimming range, improves skimming reliability, and included angle B is small, reduces skimming plate agitation pond body liquid level to the greatest extent.
The mud-scraping mechanism 4 includes cleaning shoe 41, and the cleaning shoe is located at the bottom of pond body, the lower band two of the transmission belt End is respectively equipped with L shape pull rod 42, and the cleaning shoe is hinged on a pair of L-shaped pull rod, and L shape pull rod has cross bar 421 and vertical bar 422, cleaning shoe is hinged on the bottom of vertical bar;
The on both sides of the middle of the cleaning shoe is respectively equipped with slide bar 2 43, and (setting of slide bar two cooperates the straight cunning of lower section at middle part Road two works, and silt is avoided to enter in the straight slideway two of lower section), the two sides of the bottom of the pond body are respectively equipped with slideway 2 14, The slide bar two is adaptedly located in slideway two, and the slideway two includes a pair of parallel straight slideway 2 141, a pair of of straight slideway two It is connected between two-port immediately below belt wheel two by inclined ramp 142, wherein the other end for the straight slideway two being located above Mouth is in horn mouth 143;
The lamination mechanism 5 includes lifting rope 51 and strainer 52, and the strainer is connected horizontally on the middle part of pond body by lifting rope, Between transmission belt and cleaning shoe, the strainer is equipped with sliding for L shape pull rod (vertical bar i.e. in L shape pull rod) strainer Dynamic slide opening 520;
At work, pond body is layered for lamination mechanism, is divided into the area Gua Zha and the area Gua Ni;In this way, being risen when scraping mud movement To stopping lower part to generate upward sludge in agitation, sedimentation effect is improved.
In mud-scraping mechanism work,
When driving motor rotates forward, under the action of lower band, L shape pull rod drives cleaning shoe, and the slide bar two on cleaning shoe is located at It is run in the straight slideway two of lower section towards sludge sump, mud movement is scraped in realization;In operation to sludge sump, slide bar two is detached from lower section Straight slideway two;
When driving motor inverts, since cleaning shoe and L shape pull rod are hinged, when L shape pull rod is advanced with lower band, cleaning shoe goes out It now swings, continues on, the slide bar two on cleaning shoe enters in the straight slideway two being located above from horn mouth, until running to oblique The straight slideway two that slideway enters lower section is resetted;In reseting procedure, there is angle between cleaning shoe and L shape pull rod, avoid Cleaning shoe in vertical state when, cause the agitation to pool bottom, guarantee the reliability of precipitating.
The mounting base 32 includes pedestal 321, and there is horizontal perforation 3211, bottom intermediate vertical to wear at the middle part of the pedestal Hole 3212, the vertical horizontal perforation of perforation connection, the upper band is located in horizontal perforation, and in work, upper band is by vertically wearing Hole enters in horizontal perforation, and the bottom surface both ends of the pedestal are respectively equipped with free bearing 1, and the free bearing one is equipped with fraising one, The bottom of the skimming plate is equipped with a pair of of free bearing 2 35, and the free bearing two is equipped with fraising two, and a pair of of free bearing one is located at a pair of of hinge Between seat two, hinged shaft is connected in the fraising one and fraising two.
In work, connection can be further fixed between mounting base and upper band by bolt, guarantees the reliability of connection;Skimming It is hinged convenient and reliable between plate and mounting base.
The bottom of the L shape pull rod 42 is equipped with hinged shaft, and the cleaning shoe is equipped with corresponding fraising;The two is facilitated to connect, Operation is reliable.
The connection road 132 is arc-shaped, and the opening in a pair of arc-shaped connection road is oppositely arranged, convenient for according to processing needs Carry out selection setting.
The connection road 132 is in the shape of the letter V, and the opening in a pair of of V-shaped connection road is oppositely arranged, convenient for according to processing need into Row selection setting.
Spring 44 is equipped between the L shape pull rod 42 and cleaning shoe 41, the spring is located at cleaning shoe towards sludge sump Side;Spring is set, so that L shape pull rod pulls cleaning shoe, when scraping the movement of mud back resetting, cleaning shoe can reliably enter position In in the straight slideway two of top.
At work, skimming plate acts the present invention in slideway one, when realizing skimming, opens skimming plate, when reset, shrinks Skimming plate;
Cleaning shoe acts in slideway two, and realization is when scraping mud, opens cleaning shoe, when reset, shrinks cleaning shoe;
The stirring to slag object and sediment in pond body is avoided, treatment effect is improved.
It further include elastic drag rope 53 and lower filter screen 54, the lower filter screen is connected on strainer by elastic drag rope, under described Strainer is located at the lower section of strainer, and the aperture of the lower filter screen is less than the aperture of strainer.In this way, playing further filtration, keep away Exempt from sludge to act upwards, operation is reliable.Lower filter screen is equipped with slide opening convenient for vertical bar sliding, reliable in action.Meanwhile elastic drag rope exists It in work, can be shaken with electric filter and lower filter screen, by sludge into shaking off, operation is reliable.

Claims (6)

1. a kind of layer-stepping sedimentation basin, including pond body, top one end of pond body is equipped with slag notch, and bottom end is equipped with sludge sump, In the horizontal direction, slag notch and sludge sump are located at the both ends of pond body;
It is characterized in that, further include driving device, skimming mechanism, mud-scraping mechanism and lamination mechanism,
The driving device includes that driving motor, belt wheel one, belt wheel two, driving band and transmission belt, the driving motor are located at pond The top surface of body, the belt wheel one and belt wheel two are located at the both ends of the top liquid level of pond body or less position, and the drive belt ring is around even It connects on belt wheel one and belt wheel two, the transmission belt has upper band and lower band, and the driving motor passes through driving band driving pulley One, the belt wheel one is located at the surface of sludge sump;
The skimming mechanism includes skimming plate, mounting base and elastomer, and the skimming plate is hinged on transmission belt by mounting base Upper band, the skimming plate are located at the top of upper band,
The elastomer is connected between skimming plate and upper band, and the elastomer is located at skimming plate towards the side of slag notch,
The top two sides of the skimming plate are respectively equipped with slide bar one, and the top two sides of the pond body are respectively equipped with slideway one, described Slideway one includes a pair of parallel straight slideway one and a pair of symmetrically arranged connection road, and the connection road is connected to a pair of straight sliding Between the port in road one,
The slide bar one is adaptedly located in slideway one;
The mud-scraping mechanism includes cleaning shoe, and the cleaning shoe is located at the bottom of pond body, the lower band both ends difference of the transmission belt Equipped with L shape pull rod, the cleaning shoe is hinged on a pair of L-shaped pull rod,
The on both sides of the middle of the cleaning shoe is respectively equipped with slide bar two, and the two sides of the bottom of the pond body are respectively equipped with slideway two, described Slide bar two is adaptedly located in slideway two, and the slideway two includes a pair of parallel straight slideway two, and a pair of of straight slideway two is located at band It is connected between two-port immediately below wheel two by inclined ramp, wherein the another port for the straight slideway two being located above is in loudspeaker Mouthful;
The lamination mechanism includes lifting rope and strainer, and the strainer is connected horizontally on the middle part of pond body, the strainer by lifting rope Between transmission belt and cleaning shoe, the strainer is equipped with the slide opening for the sliding of L shape pull rod;
It further include elastic drag rope and lower filter screen, the lower filter screen is connected on strainer by elastic drag rope, and the lower filter screen is located at The lower section of strainer, the aperture of the lower filter screen are less than the aperture of strainer.
2. a kind of layer-stepping sedimentation basin according to claim 1, which is characterized in that the mounting base includes pedestal, described The middle part of pedestal has horizontal perforation, the perforation of bottom intermediate vertical, the vertical horizontal perforation of perforation connection, and the upper band is located at In level perforation, the bottom surface both ends of the pedestal are respectively equipped with free bearing one, and the free bearing one is equipped with fraising one, the skimming plate Bottom be equipped with a pair of of free bearing two, the free bearing two is equipped with fraising two, and a pair of of free bearing one is located between a pair of of free bearing two, described Hinged shaft is connected in fraising one and fraising two.
3. a kind of layer-stepping sedimentation basin according to claim 1, which is characterized in that the bottom of the L shape pull rod is equipped with hinge Axis, the cleaning shoe are equipped with corresponding fraising.
4. a kind of layer-stepping sedimentation basin according to claim 1, which is characterized in that the connection road is arc-shaped, a pair of The opening in arc-shaped connection road is oppositely arranged.
5. a kind of layer-stepping sedimentation basin according to claim 1, which is characterized in that the connection road is in the shape of the letter V, a pair of of V The opening in font connection road is oppositely arranged.
6. a kind of layer-stepping sedimentation basin according to claim 1, which is characterized in that between the L shape pull rod and cleaning shoe Equipped with spring, the spring is located at cleaning shoe towards the side of sludge sump.
CN201711108924.3A 2017-11-11 2017-11-11 A kind of layer-stepping sedimentation basin Active CN107854871B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109758795B (en) * 2019-03-07 2020-11-24 江苏佳佩环保机械设备有限公司 Sewage desilting treatment device
CN109833654A (en) * 2019-03-23 2019-06-04 王沛才 A kind of flat wound membrane of automatic cleaning water (cloth) sedimentation basin

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782357A (en) * 1954-03-17 1957-09-04 Ames Crosta Mills & Company Lt Improvements in or relating to scraping and scumming apparatus for sedimentation tanks
JPS59142810A (en) * 1983-02-02 1984-08-16 Kubota Ltd Scraping-up device for sludge
JP2007029941A (en) * 2005-07-26 2007-02-08 Fujika:Kk Forward/backward driving device
CN205011433U (en) * 2015-08-11 2016-02-03 黄柏翔 Reciprocating type scraping device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782357A (en) * 1954-03-17 1957-09-04 Ames Crosta Mills & Company Lt Improvements in or relating to scraping and scumming apparatus for sedimentation tanks
JPS59142810A (en) * 1983-02-02 1984-08-16 Kubota Ltd Scraping-up device for sludge
JP2007029941A (en) * 2005-07-26 2007-02-08 Fujika:Kk Forward/backward driving device
CN205011433U (en) * 2015-08-11 2016-02-03 黄柏翔 Reciprocating type scraping device

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