CN101474498B - Mud scraper for sewage precipitation pool - Google Patents
Mud scraper for sewage precipitation pool Download PDFInfo
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- CN101474498B CN101474498B CN2008101631091A CN200810163109A CN101474498B CN 101474498 B CN101474498 B CN 101474498B CN 2008101631091 A CN2008101631091 A CN 2008101631091A CN 200810163109 A CN200810163109 A CN 200810163109A CN 101474498 B CN101474498 B CN 101474498B
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Abstract
The invention discloses a mud scrapper applicable to a detention pool, comprising a track (2), a frame (3), wheels (4), a connecting rod mechanism (5) on the frame (3) and a rope (7); wherein each wheel (4) is rotatablely positioned at one side of a corresponding supporting plate (32) by an axle (41); the connecting rod mechanism (5) comprises at least two driven pulling rods (53) that pass through and are arranged at corresponding axles (41) respectively, at least two connecting plates (52) connecting a front and a rear driven pulling rods (53) and a driving pulling rod (51), in addition, the driving pulling rod (51) is pulled by the rope (7), the rope (7) parallels to the track (2), while the mud scrapper (6) is arranged at the bottom of the driven pulling rods (53). Compared with the prior art, in the invention the rope pulls the connecting mechanism and drives the mud scrapper arranged on the connecting mechanism to touch the bottom of the pool body, meanwhile, by the pulling of the rope, the frame can walk along the track, therefore, the mud scrapper can continuously scrap and collect the mud-like deposits at the bottom of the pool body.
Description
Technical field
The present invention relates to technical field of sewage treatment, relate in particular to a kind of sedimental mud scraper of mud shape that is used to scrape at the bottom of the collection detention tank pond.
Background technology
At present; be used for the mud scraper of detention tank more be to adopt the chain type mud scraper; be used for moving the mud shape deposit be deposited at the bottom of the pond; but this its core parts of chain type mud scraper and chain etc. are subjected to the serious corrosion of sewage easily; in actual application; serious fault takes place through regular meeting in mud scraper, and maintenance workload is big, brings a lot of inconvenience to use.
Also have a kind of rectilinear mud scraper in addition, it is that movably crossbeam is set on the water surface of detention tank, and the mud scraper of vertical lifting is installed on the crossbeam arm.But often be provided with other facilities above the existing detention tank, such as being used for bridge of walking or the like, this rectilinear mud scraper setting is caused obstacle, thereby, can not well be applicable to present detention tank, and, this rectilinear mud scraper can influence sludge settling, equipment volume is also bigger, and it is bigger to take up room, and input cost is higher.
Therefore, the existing mud scraper that is used for detention tank all needs to improve.
Summary of the invention
Technical problem to be solved by this invention is that a kind of simple in structure, mud scraper that Installation and Debugging are used for detention tank easily is provided at above-mentioned prior art present situation, adopt single power rope just can realize driving, and equipment volume is little, in light weight, stable drive, energy consumption is low, comprehensive treatment capability is high, it is laborsaving easy to safeguard.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: this is used for the mud scraper of detention tank, comprise the cleaning shoe that is arranged on the track at the bottom of the pond and is used to scrape the collection pool bottom sludge, it is characterized in that: also include walking freely in orbit vehicle frame, be positioned at least two wheels under the vehicle frame, be arranged on a linkage and a rope on the vehicle frame;
Wherein, the bottom of described vehicle frame respectively is provided with a gripper shoe in the position of corresponding each wheel, and each wheel wears corresponding gripper shoe and a rotating side that is positioned at corresponding gripper shoe by a wheel shaft respectively;
Described linkage comprise at least two be located in respectively on the corresponding wheel shaft from pull lever, connect before and after from least two connecting plates of pull lever and the main pull lever that is erected between at least two connecting plates and all links to each other with connecting plate, and, described main pull lever is by described cable traction, this cable traction direction and described parallel track;
And described cleaning shoe just is arranged on described bottom from pull lever.
During work, rope can draw main pull lever forward or backward, when rope along track when front haulage master pull lever is advanced, main pull lever and coupled connecting plate move forward together, because every can be around the wheel shaft rotation of correspondence from pull lever, every must be that the center rotates with the wheel shaft of correspondence from pull lever, and rotate its bottom cleaning shoe touch at the bottom of the pond till, like this, rope continues traction link mechanism forward, cleaning shoe is with regard at the bottom of the contact chamber right and in running order, thereby the mud at the bottom of the pond is swept; When rope along track when rear haulage master pull lever retreats, main pull lever and coupled connecting plate move together backward, every must be that the rotation opposite with aforementioned direction done at the center with the wheel shaft of correspondence from pull lever, will deflect and away from the bottom of the pond from the cleaning shoe of pull lever bottom, like this, rope continues traction link mechanism backward, and cleaning shoe just is in off working state always, at last, vehicle frame can return to the origin.
Described main pull lever can be a simple straight-bar, the central authorities of rope and this straight-bar are fixedly linked, but for making main pull lever spur connecting plate more stably, then by drive the vehicle frame walking from pull lever, described main pull lever can be made into parallelogram, wherein two relative ends link to each other with described connecting plate, generally can be fixed on the medium position of connecting plate, and described rope just with this main pull lever in addition two relative ends link to each other, also be that rope just in time is positioned on the diagonal of this main pull lever.
As further improvement, describedly can flexibly connect by bearing pin and connecting plate from pull lever, when rope is drawn in the other direction immediately, rotate because of relative connecting plate from pull plate, and can not drive vehicle frame immediately to the walking of cable traction direction, have cushioning effect preferably, and, also make linkage when vehicle frame walks back and forth from the flexible connection between pull lever and the connecting plate, be in the state of a balance all the time.
When rope pulling linkage, linkage can move to the direction of rope pulling, will touch vehicle frame and move to extreme position from pull plate, be control that can be the more good extreme position that moves forward or backward from pull plate, prevent at the bottom of the undue scraping pond of the cleaning shoe of pull lever bottom, and the wearing and tearing cleaning shoe, be respectively arranged with a limited block in corresponding each position on the described vehicle frame from pull plate, the size of limited block can be made according to actual needs, like this, can be subjected to spacingly from pull plate because of the limited block of the correspondence of conflicting, make the spacing position of cleaning shoe obtain ideal control.
Because whole mud scraper is to do detention tank pond basic skill or training, be the stability that guarantees that vehicle frame is walked in orbit, can be provided with weight equably on the top, corner of described vehicle frame, generally just on four corners of vehicle frame, a weight is set respectively, these four weights in balance scrape in the mud car weight amount, save material, reduced cost.
Be sedimental volume at the bottom of the further concentration basin, can be provided with the parallel each other concentration response plate of polylith on the top of described cleaning shoe vertically, like this, along with moving of cleaning shoe, mud at the bottom of the pond and sewage mixture have been subjected to sufficient stirring, immixture, have reduced sediment space, have increased the settling section space, make inner mud flocculation sediment again, played good inspissation.
Be to improve the work effect of concentration response plate, described concentration response plate can be designed to undaform, and the trend of undaform concentration response plate and described parallel track have improved the comprehensive treatment capability of equipment.
Because when cleaning shoe is in running order, come in contact with at the bottom of the pond always, and also may there be bigger hard thing at the bottom of the pond, when cleaning shoe directly contacts with hard thing, can produce rigid collision, can cause the whole mud car of scraping to produce by a relatively large margin shake, thereby make wheel derailment, equipment can not normally be moved.In order to address this problem, can set up sheet rubber in described cleaning shoe bottom, by soft sheet rubber directly and the pond basal surface come in contact, when having reduced wearing and tearing, hard collision is become elastic collision, prevented the derailing of wheel well, guarantee the equipment operate as normal.
Be energy savings, described rope can be by its traction of two-way motor-driven, be provided with the parallel each other track of two pairs at the bottom of the described pond, this either-rotation motor drives two mud scrapers and moves on track separately, and, transmission is connected with a reel on the output of this either-rotation motor, described rope is wrapped on this reel, the rope of drawing from reel links to each other with main pull lever on first mud scraper through some directive wheels, walk around the some directive wheels that are arranged on that pond body inwall relative again with this reel, link to each other with main pull lever on second mud scraper again, rap around on the described reel through behind some directive wheels at last, thereby making an either-rotation motor can drive two mud scraper moving directions walks at the bottom of the pond each other on the contrary, directive wheel wherein plays the guiding to rope, positioning action guarantees that the direction of cable traction vehicle frame can keep and parallel track all the time.
For realizing Based Intelligent Control, near on the pond body inwall of described two secondary tracks with side end, the position of the vehicle frame side of corresponding every mud scraper, be provided with one and trigger control device, after an arbitrary vehicle frame side touched this triggering control device in two mud scrapers, this triggers control device can control described either-rotation motor conversion direction of rotation; Like this because the traffic direction of two mud scrapers is opposite all the time, wherein one in running order, another then is in off working state; After wherein the vehicle frame of a mud scraper was run into the triggering controller, either-rotation motor was with regard to the conversion work direction, and rope will oppositely draw, and two mud scrapers will move back and forth between the body of pond back and forth, realize the Based Intelligent Control function, made more convenient to operate reliable.
Specifically should the time, the such either-rotation motor of many groups can be set in detention tank, trigger control device, mud scraper and directive wheels.
Compared with prior art, the present invention is by the cable traction linkage, and the cleaning shoe that is provided with in the drivening rod mechanism touches body bottom, pond, meanwhile, under the traction of rope, vehicle frame can collect the mud shape deposit of body bottom, pond thereby cleaning shoe is scraped continuously along track travel;
Two cleaning shoes can be set on the vehicle frame of a mud scraper, make the sludge discharge effects of mud scraper obviously increase, reduce the reciprocal number of run of mud scraper, reduce energy consumption, improve operating efficiency than traditional mud scraper;
With same category of device comparatively speaking, mud scraper of the present invention is simple and compact for structure, equipment volume is little, in light weight, transmission is reliable and stable, adopt single rope (generally can adopt steel wire rope) as traction, simplified the directed traction system (generally can adopt the directive wheel of plurality of fixed on the body inwall of pond to realize) of rope, save the space, greatly reduced cost;
The present invention is two cleaning shoe designs, has solved the problem at mud dead angle well, no dead angle phenomenon, and treatment effect is obvious;
Mud scraper of the present invention is simple in structure, need not to be provided with support members such as big bridge, frame, consumable accessorys such as no bearing, mechanical part all can adopt stainless steel, can not be subjected to the corrosiveness of mud at the bottom of the pond, long service life, maintenance workload is low, convenient and reliable operation;
The design of special linkage, tilting moment is little, and energy consumption is low, the efficient height;
Mud scraper of the present invention can satisfy the detention tank that varies in size, and selects the quantity of mud scraper and the model of reducing motor flexibly according to the big I of pond body, makes the resource rational Application.
Description of drawings
Fig. 1 is the structural representation (having omitted accessories such as either-rotation motor, reel, directive wheel, triggering control device) of the embodiment of the invention;
Fig. 2 is installed in the structural representation of Chi Tihou for the embodiment of the invention;
Fig. 3 is the in running order simple and easy schematic diagram (vehicle frame advances) of the embodiment of the invention;
Fig. 4 is in the simple and easy schematic diagram (vehicle frame retreats) of off working state for the embodiment of the invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As Fig. 1～shown in Figure 4, the mud scraper that this is used for detention tank, comprise be arranged at the bottom of the pond 11 track 2, can be at the vehicle frame 3 of walking freely on the track 2, be positioned at four wheels 4 under the vehicle frame 3, be arranged on linkage 5, cleaning shoe 6 and a rope 7 on the vehicle frame 3;
Wherein, described vehicle frame 3 is the framework that a periphery is rectangle, respectively be provided with a weight 31 on the top in its four corners, so that mud scraper 11 walkings at the bottom of the pond are more steady, vehicle frame 3 bottoms are positioned at four edges and respectively are provided with a gripper shoe 32, and each wheel 4 wears corresponding gripper shoe 32 by a wheel shaft 41 and the rotating outside that is positioned at corresponding gripper shoe 32 also is, corresponding four wheels 4, one has four gripper shoes 32, four wheel shafts 41 on the vehicle frame 3;
Described linkage 5 comprise four be located in respectively on the corresponding wheel shaft 41 from pull lever 53, before and after connecting from two connecting plates 52 of pull lever 53 be erected at main pull lever 51 between two connecting plates 52, and, four ends that are movably connected in corresponding connecting plate 52 from pull lever 53 respectively by bearing pin 54, described main pull lever 51 parallelograms, wherein two relative end 51a are fixedly linked with two connecting plates 52 respectively, and described rope 7 just with this main pull lever 51 in addition two relative end 51b link to each other, main pull lever 51 is just by rope 7 tractions, these rope 7 leads are parallel with described track 2, like this, rope 7 is positioned at main pull lever 51 diagonal positions, makes rope 7 draws more steady;
Be respectively arranged with a limited block 33 in corresponding each position on the described vehicle frame 3 from pull plate 53;
Described cleaning shoe 6 cross sections are inverted L type substantially, a mud scraper is provided with two described cleaning shoes 6, each cleaning shoe 6 vertically two ends of part links to each other with those two of siding track 2 bottoms from pull lever 53 (promptly two from pull lever 53) respectively with near non-, and make cleaning shoe 6 and described track 2 that direction vertically (also promptly vertical with vehicle frame 3 direction of travel) is set, and, have additional sheet rubber 61 in described cleaning shoe 6 bottoms, and sheet rubber 61 upper edges are fixed on securely the working face of cleaning shoe 6 with pressing plate 63, during work, along with vehicle frame 3 along track 2 walking, the bottom of this sheet rubber 61 just pro with 11 swipe at the bottom of the pond;
Be sedimental volume on 11 at the bottom of the further concentration basin, be provided with the parallel each other concentration response plate 62 of polylith vertically on the top of described cleaning shoe 6 (being the top plan of lateral part), this concentration response plate 62 is undaform, and the trend of undaform concentration response plate 62 is parallel with track 2;
And, described rope 7 drives its traction by a two-way motor 8, in the present embodiment, be equipped with the parallel each other track of two width of cloth 2 on 11 at the bottom of the pond, an either-rotation motor 8 drives two mud scrapers and moves on the contrary each other on track 2 separately, and, transmission is connected with a reel 81 on the output of this either-rotation motor 8, described rope 7 is wrapped on this reel 81, the rope 7 of drawing from reel 81 links to each other with main pull lever 51 on first mud scraper through some directive wheels 71, walk around some directive wheels 71 of being arranged on that pond body inwall 12 relative (blocked by pond body inwall 12 among Fig. 2 and can't see) again with this reel 81, link to each other with main pull lever 51 on second mud scraper again, rap around on the described reel 81 through behind some directive wheels 71 at last;
Simultaneously, near on the pond body inwall 12 of this two secondary track 2 with side end, the position of vehicle frame 3 sides of corresponding every mud scraper, be provided with one and trigger control device 9, after arbitrary vehicle frame 3 sides touched this triggering control device 9 in two mud scrapers, this triggering control device 9 can be controlled either-rotation motor 8 conversion direction of rotation.
Be the operation principle of center explanation mud scraper below with first mud scraper:
Either-rotation motor 8 drives reel 81 certain orientations and rotates, be coiled in the main pull lever 81 that the rope 7 on the reel 81 begins to draw the first coupled mud scraper, when rope 7 along track 2 when front haulage master pull lever 51 is advanced, main pull lever 51 and coupled connecting plate 52 move forward together, moving direction is referring to shown in the arrow on the connecting plate among Fig. 3 52, four that link to each other with connecting plate 52 is that the center rotates with corresponding wheel shaft 41 respectively from pull lever 53, make from the cleaning shoe 6 of pull lever 53 bottoms, sheet rubber 61 is gradually to deflecting near 11 direction at the bottom of the pond, yawing moment is referring to shown in the arrow of 61 1 sides of sheet rubber among Fig. 3, be arranged on until conflicting on the vehicle frame 3 till the corresponding limited block 33 from pull lever 53, at this moment, 11 surfaces at the bottom of the pond have all been touched from sheet rubber 61 bottoms of pull lever 53 bottoms, like this, rope 7 continues traction link mechanism 5 forward, sheet rubber 61 can be always with 11 swipe at the bottom of the pond, first mud scraper is in running order, thereby 11 mud at the bottom of the pond is scraped collection, referring to Fig. 3;
The direction of travel of first, second mud scraper is opposite all the time, when first mud scraper is positioned at the track originating terminal, second mud scraper is located in the track end relative with originating terminal, and in running order when first mud scraper, second mud scraper just is in off working state;
When the vehicle frame 3 of first mud scraper moves to track 2 ends, second mud scraper that is adjacent also just moves to the originating terminal of track, promptly, near with this track 2 terminal its those relative pond body sidewalls on, at this moment, the vehicle frame 3 of second mud scraper can touch the triggering control device 9 that is provided with on the pond body inwall 12, trigger control device 9 and just control either-rotation motor 8 conversion work directions, rope 7 will oppositely draw main pull lever 51, vehicle frame 3 is retreated along track 2, moving direction is referring to shown in the arrow on the connecting plate among Fig. 4 52, main pull lever 51 and coupled connecting plate 53 move together backward, and every be that the center is done and reciprocal rotation from pull lever 53 with the wheel shaft 41 of correspondence, from the cleaning shoe 6 of pull lever 53 bottoms, sheet rubber 61 will be away from 11 ground deflections at the bottom of the pond, yawing moment is referring to shown in the arrow of 61 1 sides of sheet rubber among Fig. 4, like this, rope 7 continues traction link mechanism 5 backward, sheet rubber 61 can be always not with 11 swipe at the bottom of the pond, device is in off working state, referring to Fig. 4;
At last, the vehicle frame 3 of first mud scraper comes back to the origin, vehicle frame 3 sides can touch the triggering control device 9 on the pond body inwall 12, either-rotation motor 8 conversion work directions, rope 7 leads are conversion thereupon again, like this, vehicle frame 3 will move back and forth between pond body inwall 12 back and forth, makes mud scraper constantly scrape collection to 11 mud at the bottom of the pond.
Because the pond body varies in size, the quantity of mud scraper also changes thereupon, selects the quantity of mud scraper according to the principle of the energy and resource optimum.When having only a mud scraper operation, the triggering control device can be set at the two ends of pond body, thus the normally operation back and forth of control mud scraper.
Claims (10)
1. mud scraper that is used for detention tank, comprise track (2) that is arranged on (11) at the bottom of the pond and the cleaning shoe (6) that is used to scrape Ji Chidi (11) mud, it is characterized in that: also include can track (2) go up walking freely vehicle frame (3), be positioned at least two wheels (4) under the vehicle frame (3), be arranged on a linkage (5) and a rope (7) on the vehicle frame (3);
Wherein, the bottom of described vehicle frame (3) respectively is provided with a gripper shoe (32) in the position of corresponding each wheel (4), and the gripper shoe (32) that each wheel (4) wears correspondence by a wheel shaft (41) respectively is rotatably positioned the side in corresponding gripper shoe (32);
Described linkage (5) comprise at least two be located in respectively on the corresponding wheel shaft (41) from pull lever (53), connect before and after from least two connecting plates (52) of pull lever (53) and the main pull lever (51) that is erected between at least two connecting plates (52) and all links to each other with connecting plate (52), and, described main pull lever (51) is by described rope (7) traction, and this rope (7) lead is parallel with described track (2);
And described cleaning shoe (6) just is arranged on described bottom from pull lever (53).
2. the mud scraper that is used for detention tank according to claim 1, it is characterized in that: described main pull lever (51) parallelogram, two relative ends (51a) wherein link to each other with described connecting plate (52), and described rope (7) just with this main pull lever (51) in addition two relative ends (51b) link to each other.
3. the mud scraper that is used for detention tank according to claim 1 is characterized in that: describedly flexibly connect by bearing pin (54) and connecting plate (52) from pull lever (53).
4. the mud scraper that is used for detention tank according to claim 1 is characterized in that: described vehicle frame (3) is gone up in corresponding each position from pull lever (53) and is respectively arranged with a limited block (33).
5. the mud scraper that is used for detention tank according to claim 1 is characterized in that: be provided with weight (31) on the top, corner of described vehicle frame (3) equably.
6. the mud scraper that is used for detention tank according to claim 1 is characterized in that: be provided with the parallel each other concentration response plate (62) of polylith on the top of described cleaning shoe (6) vertically.
7. the mud scraper that is used for detention tank according to claim 6 is characterized in that: described concentration response plate (62) is undaform, and the undaform trend of this concentration response plate (62) is parallel with described track (2).
8. the mud scraper that is used for detention tank according to claim 1 is characterized in that: set up sheet rubber (61) in described cleaning shoe (6) bottom.
9. according to the described mud scraper that is used for detention tank of arbitrary claim in the claim 1 to 8, it is characterized in that: described rope (7) drives its traction by a two-way motor (8), (11) are provided with the parallel each other track of two pairs (2) at the bottom of the described pond, this either-rotation motor (8) drives two mud scrapers and goes up mobile at track (2) separately, and, transmission is connected with a reel (81) on the output of this either-rotation motor (8), described rope (7) is wrapped on this reel (81), the rope (7) of drawing from reel (81) links to each other with main pull lever (51) on first mud scraper through some directive wheels (71), walk around the some directive wheels (71) that are arranged on that pond body inwall (12) relative again with this reel (81), link to each other with main pull lever (51) on second mud scraper again, rap around on the described reel (81) after passing through some directive wheels (71) at last.
10. the mud scraper that is used for detention tank according to claim 9, it is characterized in that: going up, the position of vehicle frame (3) side of corresponding every mud scraper, be provided with one and trigger control device (9) with the pond body inwall (12) of side end near two secondary tracks (2), after an arbitrary vehicle frame (3) side touched this triggering control device (9) in two mud scrapers, this triggers control device (9) can control described either-rotation motor (8) conversion direction of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101631091A CN101474498B (en) | 2008-12-12 | 2008-12-12 | Mud scraper for sewage precipitation pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101631091A CN101474498B (en) | 2008-12-12 | 2008-12-12 | Mud scraper for sewage precipitation pool |
Publications (2)
| Publication Number | Publication Date |
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| CN101474498A CN101474498A (en) | 2009-07-08 |
| CN101474498B true CN101474498B (en) | 2010-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101631091A Active CN101474498B (en) | 2008-12-12 | 2008-12-12 | Mud scraper for sewage precipitation pool |
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| CN (1) | CN101474498B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527105B (en) * | 2012-03-13 | 2013-09-04 | 扬州青青环保成套设备有限公司 | Drossing mud scraper |
| CN102617009A (en) * | 2012-04-01 | 2012-08-01 | 健雄职业技术学院 | Scraper type material distribution, breaking and material receiving device |
| CN105019497A (en) * | 2014-04-21 | 2015-11-04 | 中国石油化工股份有限公司 | n-shaped track walking sludge removing machine |
| CN104445512B (en) * | 2014-10-30 | 2016-05-04 | 安徽国祯环保节能科技股份有限公司 | For the removing equipment of municipal sewage plant's anaerobic pond surface scum |
| CN106968319B (en) * | 2017-05-23 | 2018-06-01 | 江苏锡沂高新区科技发展有限公司 | A kind of Environmental-protection decontamination device |
| CN107587571A (en) * | 2017-05-23 | 2018-01-16 | 佛山尘凡环保科技有限公司 | A kind of improved environment protection decontamination plant |
| CN107485895A (en) * | 2017-07-31 | 2017-12-19 | 河南中成环保科技有限公司 | Scrape mud assembly |
| CN108525357A (en) * | 2018-04-03 | 2018-09-14 | 芜湖孺子牛节能环保技术研发有限公司 | A kind of mud scraper with anti-blockage function |
| CN109052784B (en) * | 2018-08-31 | 2019-12-20 | 浙江太阳石水处理有限公司 | Industrial water purification system convenient to wash |
| CN110523120A (en) * | 2019-08-01 | 2019-12-03 | 铜仁学院 | A kind of sewage-treatment plant with filtering function |
| CN110694312B (en) * | 2019-09-27 | 2021-08-27 | 合肥思筹科技有限公司 | Underwater walking type mud scraper for sewage treatment sedimentation tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3635349A (en) * | 1970-10-16 | 1972-01-18 | Rex Chainbelt Inc | Power-operated extensible skimming blade |
| US20060124539A1 (en) * | 2004-12-10 | 2006-06-15 | Fujiwara Sangyo Kabushiki Kaisha | Sludge scraping and collecting apparatus |
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2008
- 2008-12-12 CN CN2008101631091A patent/CN101474498B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3635349A (en) * | 1970-10-16 | 1972-01-18 | Rex Chainbelt Inc | Power-operated extensible skimming blade |
| US20060124539A1 (en) * | 2004-12-10 | 2006-06-15 | Fujiwara Sangyo Kabushiki Kaisha | Sludge scraping and collecting apparatus |
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| CN101474498A (en) | 2009-07-08 |
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Effective date of registration: 20101110 Address after: 315812 Zhejiang Province, Ningbo City West Industrial Zone, Daxie Pavilion 8-6-2 block Patentee after: Zhejiang Dean Technology Co., Ltd. Address before: 315812 Zhejiang province Ningbo Daxie Development Zone, West Industrial Park Patentee before: Dean New-technology Development Co., Ltd., Zhejiang |