CN106943785B - Underground water-coal dewatering system suitable for thousands of tons of mines with extremely high water content - Google Patents
Underground water-coal dewatering system suitable for thousands of tons of mines with extremely high water content Download PDFInfo
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- CN106943785B CN106943785B CN201710265299.7A CN201710265299A CN106943785B CN 106943785 B CN106943785 B CN 106943785B CN 201710265299 A CN201710265299 A CN 201710265299A CN 106943785 B CN106943785 B CN 106943785B
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- 239000003245 coal Substances 0.000 title claims abstract description 114
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 105
- 238000001914 filtration Methods 0.000 claims abstract description 45
- 230000003139 buffering effect Effects 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000013016 damping Methods 0.000 claims abstract description 22
- 238000009826 distribution Methods 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 2
- 208000005156 Dehydration Diseases 0.000 description 22
- 230000018044 dehydration Effects 0.000 description 22
- 238000006297 dehydration reaction Methods 0.000 description 22
- 238000000034 method Methods 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 7
- 238000004062 sedimentation Methods 0.000 description 5
- 239000003250 coal slurry Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 101100365548 Caenorhabditis elegans set-14 gene Proteins 0.000 description 1
- 101100141528 Schizosaccharomyces pombe (strain 972 / ATCC 24843) set13 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
- B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses a mine well suitable for thousands of tons and with extremely high water contentA dewatering system for sewage coal. The system comprises a damping buffering distributing device positioned in the coal flow main conveying belt coal throwing direction, a large-scale water filtering vibrating screen positioned at the lower part of the discharging end of the damping buffering distributing device, a large-scale feeding dewatering screen positioned at the lower part of the large-scale water filtering vibrating screen, a buffering chute and various supports; the staggered height of the damping buffering material distribution device and the coal flow main conveying belt can be adjusted according to the coal flow; large-scale drainage shale shaker inclination is according to water yield size accessible spring support frame group
Adjusting the mismatch height setting of (a); oversize materials of the large-scale water filtering vibrating screen directly enter a lifting belt through a buffering chute, and if a system fault occurs, the operation of an original system of a coal flow is not influenced; the water content in the undersize is large and the coal particles are few, and the undersize feed dewatering screen is matched for secondary dewatering, so that the water quality is high after dewatering.
Description
Technical Field
The invention relates to a large-scale dehydration system for coal flows in a coal mine, in particular to a water-coal dehydration system suitable for thousands of tons of coal in a mine with extremely high water content, and belongs to the technical field of prevention and control of coal mine water disasters.
Background
With the innovation of coal mining technology, a plurality of millions of large mines are built in China, powerful guarantee is provided for coal supply, underground accidents are frequent and continuous, coal flow conveying difficulty is increased due to the influence of water mining technology, even a coal conveying system is once broken down under the condition of extremely large water amount, and great harm is caused to enterprise operation! Only with the confusion caused by underground lifting and transportation of coal by water, a new underground dehydration technology is developed to relieve the water coal disaster.
The patent 200710055148.5 discloses a downhole dewatering technology which is essentially: coal flows through a multi-layer vibration grading dehydration sieve, oversize materials are conveyed to a coal chute, undersize materials are conveyed to a sedimentation tank, coal slime at the bottom of the sedimentation tank is conveyed to a centrifugal machine for dehydration, centrifugal liquid is returned to the sedimentation tank for concentration, the centrifugal coal slime is conveyed to the coal chute, overflow water in the sedimentation tank flows into an underground water sump, and finally closed circulation is achieved.
Patent 200910175210.3 discloses the use of a three stage dehydration process: coal slurry enters a grading dewatering screen, oversize lump coal is dewatered by a scraper conveyor and enters a coal bin, undersize products overflow to a concentration bin, the bottom of the concentration bin flows to a high-frequency screen for dewatering, oversize coarse coal slime enters the coal bin, undersize water flows back to the concentration bin, the overflow of the concentration bin is mixed with a flocculating agent and enters an inclined tube precipitation bin, and the bottom flow fine coal slime of the inclined tube precipitation bin is supplied to a filter press by a pump for dewatering and recycling.
The two patents disclosed above are directed to the problem of achieving a thorough separation of coal and water and reducing the dehydration process of surface coal, and are combined according to the structural characteristics of the existing equipment which can be suitable for underground dehydration so as to support multiple dehydration processes. In the face of tens of millions of tons of mines nowadays, once the practical underground treatment capacity is too high (> 103 t/h), market equipment which can be directly used for underground dewatering due to underground space limitation is rarely reported, and the disclosed underground coal water treatment technology cannot be applied to treatment of coal flow with large treatment capacity at all.
Patent 201510619923.X discloses the technical essence: the water burst coal flow during underground drilling is pumped by a sewage pump to a vibration dewatering screen, an oversize material inlet coal receiving groove and an undersize water flow inlet water tank through an ejector-flow dividing device for drilling. The patent focuses on solving the problem of water circulation during drilling, realizes the circulation supply of drilling water, and can effectively improve the working environment.
Patent 201410708358.X discloses a dehydration technique that: the end of the scraper device discharges large and medium lump coal to the main conveying rubber belt, the two sides of the scraper device discharge small and medium lump coal, slack coal and coal slurry to fall to the mesh belt conveyor, the end of the mesh belt conveyor discharges small and medium lump coal and most slack coal, and a small amount of slack coal and coal slurry leaked from the mesh belt conveyor fall to a slideway to be led out by the slideway. The patent focuses on providing a treatment method before underground dehydration with extremely high water content, and focuses on effectively reducing the treatment capacity of subsequent coal slurry by using three devices in a matched manner, so that a treatment mode of zero treatment is worth reference. However, the process is relatively complicated, and particularly, the supporting strength of the core equipment mesh belt conveyor to the mesh conveying belt of a large mine is greatly problematic.
Summarizing the prior art, it is easy to find that: the application of the vibration grading dewatering screen to underground coal water separation is common, and on the premise that the underground space is limited and a large dewatering screen cannot be used, the problem of impact force on a screen plate caused by coal flow of a large mine with high water content and ten million tons must be solved; the designed dehydration system can be adjusted according to the coal flow and the water content; and under the condition of meeting the fault of the vibrating screen directly contacted with the coal flow, the dewatering system cannot delay normal production, and the original system can normally operate.
Disclosure of Invention
The invention aims to provide the underground water-coal dewatering system suitable for thousands of tons of water for the mine with extremely high water content based on the advantage of simple working procedures of a vibration dewatering screen aiming at the problem of difficult underground dewatering of a large mine.
The invention designs a short-flow process for dewatering by two vibrating screens which are arranged up and down, which comprises the following steps: the damping buffering distributing device is positioned in the coal throwing direction of the coal flow main conveying belt, the large-scale water filtering vibrating screen is positioned at the lower part of the discharging end of the damping buffering distributing device, the large-scale feeding dewatering screen is positioned at the lower part of the large-scale water filtering vibrating screen, and the buffering chute is positioned below the oversize material outlet of the large-scale water filtering vibrating screen
And a buffering chute positioned below the oversize outlet of the large-scale feeding dewatering screen
And the belt supporting frame, the base support and the cross beam frame. The system can be designed and installed according to underground working conditions, belt transportation, shaft bottom coal bunker pulling accidents and production accidents in a lifting link caused by water coal can be avoided by the technical implementation of the system, and the system has the advantages of low operation cost, small size and the like.
The technical measures of the invention are as follows:
the invention is suitable for thousands of tons ofThe mine underground water-coal dehydration system with extremely high water yield comprises a damping buffering distributing device positioned in the coal flow main conveying belt coal throwing direction, a large water filtering vibrating screen positioned at the lower part of the discharging end of the damping buffering distributing device, a large feeding dehydration screen positioned at the lower part of the large water filtering vibrating screen, and a buffering chute positioned below an oversize product outlet of the large water filtering vibrating screen
And a buffering chute positioned below the oversize outlet of the large-scale feeding dewatering screen
The base bracket, the first cross beam frame, the second cross beam frame and the bracket; the large-scale water filtering vibrating screen and the large-scale feeding dewatering screen are respectively supported by the spring support frame set
Spring support frame set
The first cross beam frame is fixedly supported on the first cross beam frame; the damping buffering material distribution device is supported and installed on the second cross beam frame through a steel frame structure; the first cross beam frame and the second cross beam frame are fixed through a bracket; the inclination angle of the large-scale water filtering vibrating screen is supported by a spring support frame set
Is adjusted.
The damping buffering material distribution device and the coal flow main conveying belt are adjusted in the staggered height according to the coal flow; the inclination angle of the large-scale water filtering vibrating screen passes through the spring support frame set according to the water quantity
Adjusting the mismatch height setting of (a); oversize outlet and buffering chute of large-scale water filtering vibrating screen
The inlets are communicated with each other to buffer the chute
The outlet of the coal flow lifting belt is positioned above the coal flow lifting belt; the buffer chute positioned below the oversize outlet of the large-scale feeding dewatering screen
The outlet of the coal flow lifting belt is positioned above the coal flow lifting belt; namely, the oversize material of the large-scale water-filtering vibrating screen directly passes through the buffering chute
Enters a coal flow lifting belt, and the oversize material positioned on the large-scale feeding dewatering screen directly passes through a buffering chute
If a system fault occurs, the operation of the original system of the coal flow is not influenced; the water content in the undersize is large and the coal particles are few, and the undersize feed dewatering screen is matched for secondary dewatering, so that the water quality is high after dewatering.
More specifically: due to the limitation of underground working conditions, the invention designs and installs technical equipment by relying on the existing space, civil engineering facilities and the like. Aiming at the problem that the height of an original coal flow main conveying belt is low, the height of a belt supporting frame supporting the belt is designed to meet the installation space requirement of the dewatering system designed by the invention; the designed base bracket is used for supporting the whole set of dehydration system; a first cross beam frame is arranged at a certain height of the base support and is respectively fixed with the spring support frame set
/
Used for supporting a large-scale water filtering vibrating screen and a large-scale feeding dewatering screen; a second cross beam frame is arranged at a certain height of the first cross beam frame and is used for supporting the damping buffering material distribution device; and the two cross beam frames are supported through a bracket.
The damping buffering material distribution device is of a steel frame structure and mainly aims to receive a large amount of coal flow thrown out by a coal flow main conveying belt and realize the functions of impacting materials, grinding materials, decelerating, buffering, distributing and the like; after the coal flow is filled up, the coal flow flows to the large water filtering vibrating screen by means of gravity, and at the moment, the large water filtering vibrating screen only bears a part of the thrown coal flow, so that the direct contact between the coal flow and the large water filtering vibrating screen is avoided, and the problem that the underground vibrating screen is difficult to dewater the coal flow with large treatment capacity is effectively solved. The large water filtering vibrating screen is obliquely arranged and has an adjustable inclination angle, and the main purpose is to prevent the screen plate from being blocked and damaged by bearing and pressing caused by the coal flow accumulated and pressed screen surface. The dehydration object of the invention is the high water content coal flow, therefore, the initial design inclination angle is smaller, which can meet the requirement that more water passes through the large-scale feeding dehydration screen falling to the lower part to perform secondary dehydration under the impact of water flow, and at the moment, the water amount in the coal on the screen is greatly reduced to meet the requirement of belt lifting on the water amount; however, if the water quantity in the mining area is reduced, the amount of the materials passing through the screen is greatly reduced, so that most of the materials are accumulated on the screen surface, the operation of the vibrating screen is not facilitated, and the inclination angle can be properly increased. Meanwhile, oversize materials of the large-scale water filtering vibrating screen can fall to a lifting belt through the buffering chute, once the vibrating motor is damaged in the practical process, the large-scale water filtering vibrating screen at the moment can be used as a coal flow sliding plate without being detached, and an original coal flow working condition system can normally run, so that the water filtering and chute mutually-used function is achieved.
The large-scale feeding dewatering screen mainly aims at secondary dewatering, because the water quantity in the material of the large-scale water filtering vibrating screen greatly does not meet the lifting requirement of a conveying belt, the dewatering process must be implemented for being matched with the smooth implementation of the overall design, and the water quality after the secondary dewatering is higher, so that the large-scale feeding dewatering screen can be used as underground circulating water or can directly enter an underground sedimentation tank.
The specific dehydration process of the invention is as follows: the coal flow main conveying belt machine head tail is erected through a belt supporting frame, the coal flow main conveying belt is erected, a large amount of coal flow generated on a water mining working surface is thrown to a damping buffering distributing device through the coal flow main conveying belt, the coal flow is buffered and then falls to a large water filtering vibrating screen by means of gravity and fluid drag force, oversize products of the large water filtering vibrating screen fall to a lifting belt to directly lift a well by means of a buffering chute, undersize products of the large water filtering vibrating screen fall to a large feeding dewatering screen by means of a transparent screen, oversize products of the large feeding dewatering screen fall to the lifting belt to directly lift the well by means of the buffering chute, and undersize products of the large feeding dewatering screen enter a downhole sump by means of the buffering chute to be used as circulating water.
The large-scale water coal dewatering system designed by the invention is a short-flow process, and has the advantages that the underground coal flow with large handling capacity and high water content can be effectively lifted, and only the design of the buffer device and the ingenious design and combination of the vibrating screen are needed.
The beneficial results of the invention are as follows:
(1) the technology of the invention has quick effect and low investment cost, and is particularly suitable for underground coal dewatering systems of mines with high water content and ten million tons.
(2) The damping buffering distributing device of design can greatly alleviate the impact of coal flow to the shale shaker sieve, can use widely to the dehydration of the big mine coal flow of handling capacity.
(3) The large-scale water filtration vibrating screen is completely independently researched and developed, the installation process is adjustable according to the inclination angle of the process condition, the installation angle of the screen plate meeting the requirement of the large water quantity sieve penetration is considered, the installation angle of the material compaction screen surface when the low water content is avoided is also considered, and the installation method has practical significance for field practice.
(4) To the unable operational aspect that equipment caused because of the vibrating motor trouble, design large-scale drainage shale shaker and sift the material and directly drop the promotion belt through the buffering chute, do not influence coal stream conveying system's normal operating.
(5) The invention has the advantages that because the treatment object is the high-water-content coal flow, most undersize materials of the large-scale water-filtering vibrating screen are water and are mixed with a small amount of coal particles, so the large-scale feeding dewatering screen is required to be designed for secondary dewatering, the equipment is independently researched and developed, the secondary dewatering effect is good, and the undersize water can be recycled as underground water.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Number in the figure: 1. a belt support frame; 2. a coal flow main conveyor belt; 3. a damping buffer distributing device; 4. a second cross beam frame; 5. a large-scale water-filtering vibrating screen; 6. large-scale feeding and dewatering screen; 7. a first cross beam frame; 8. a base support; 9. a coal flow lifting belt; 10. buffering chute
(ii) a 11. Buffering chute
(ii) a 12. A support; 13. spring support frame set
(ii) a 14. Spring support frame set
。
Detailed Description
The invention will be further described with reference to the following examples (drawings):
as shown in figures 1 and 2, the damping buffering material distribution device 3 which is suitable for ten thousand tons of underground water-coal dewatering systems with extremely high water content and is positioned in the coal throwing direction of a coal flow main conveying belt 2, the large-sized water filtering vibrating screen 5 positioned at the lower part of the discharging end of the damping buffering material distribution device 3, the large-sized feeding dewatering screen 6 positioned at the lower part of the large-sized water filtering vibrating screen 5, and the buffering chute below an oversize outlet of the large-sized water filtering vibrating screen 5 are suitable for ten thousand tons of underground water-coal dewatering systems with
10. Buffer chute below oversize outlet of large-sized feeding dewatering screen 6
11. A base bracket 8, a first cross beam frame 7, a second cross beam frame 4 and a bracket 12; the large-scale water filtering vibrating screen 5 and the large-scale feeding dewatering screen 6 are respectively supported by spring support frame sets
13. Spring support frame set
14 is fixedly supported on the first cross beam frame 7; the damping buffering material distribution device 3 is supported and installed on the second cross beam frame 4 through a steel frame structure; the first cross beam frame 7 and the second cross beam frame 4 are fixed through a bracket 12; the inclination angle of the large-scale water filtering vibrating screen 5 is supported by a spring support frame set
13 mismatch height setting for adjustment; the specific specifications of the large water filtering vibrating screen 5 and the large feeding dewatering screen 6 are designed according to the underground allowable space and the coal flow, and the screen plate specification of the large water filtering vibrating screen and the large feeding dewatering screen exceeds the specification of the underground vibrating screen reported in the market for thousands of tons of mines with extremely high water quantity.
The staggering height of the damping buffering material distribution device 3 and the coal flow main conveying belt 2 is adjusted according to the coal flow, so that the impact of the coal flow on a sieve plate of the vibrating sieve can be relieved to a great extent; the inclination angle of the large-scale water filtering vibrating screen 5 passes through the spring support frame set according to the water quantity
13 mismatch height setting for adjustment; oversize outlet and buffering chute of large-scale water filtering vibrating screen 5
10 inlets are communicated with each other to form a buffer chute
The outlet of 10 is positioned above the coal flow lifting belt 9; the buffer chute positioned below the oversize outlet of the large-scale feeding dewatering screen 6
The outlet of 11 is positioned above the coal flow lifting belt 9; not only take into accountThe mounting angle of the sieve plate for passing through the sieve with more water is met, and the mounting angle for avoiding material compaction on the sieve surface under the condition of low water content is also considered; for the condition that the equipment cannot work due to the fault of the vibration motor, the material on the sieve of the large-scale water filtering vibration sieve is designed to directly pass through the buffering chute
10, dropping the coal flow lifting belt 9, so that the normal operation of the coal flow conveying system is not influenced; the large-scale feeding dewatering screen 6 is designed to be matched for secondary dewatering, and the secondary dewatering effect on undersize materials of the large-scale feeding dewatering screen 6 is good.
The invention mainly aims at the problem that the coal flow with large underground handling capacity and high water content is difficult to lift the well through the lifting belt, and can be effectively solved only through the design of the buffer device and the ingenious design and combination of the vibrating screen; compared with the dehydration process which is reported by the conventional technology and realizes the complete separation of coal water in the well by depending on market equipment combination, the dehydration process is quite different; the design content of the invention can be widened to other similar coal mine underground water treatment.
The specific structural parameters, structural forms and combination modes of the technical equipment can be designed according to actual conditions on site, and all technical equipment with different specifications and combination modes thereof based on the design idea of the invention belong to the technical scope of the invention.
Claims (1)
1. The utility model provides a be suitable for ten thousand tons, mine underground water coal dewatering system that water content is high which characterized in that: the device comprises a damping buffering distributing device (3) positioned in the coal flow main conveying belt (2) coal throwing direction, a large-scale water filtering vibrating screen (5) positioned at the lower part of the discharging end of the damping buffering distributing device (3), a large-scale feeding dewatering screen (6) positioned at the lower part of the large-scale water filtering vibrating screen (5), and a buffering chute positioned below an oversize outlet of the large-scale water filtering vibrating screen (5)
(10) And a buffer chute positioned below the oversize outlet of the large-scale feeding dewatering screen (6)
(11) The base bracket (8), the first cross beam frame (7), the second cross beam frame (4) and the bracket (12); the large-scale water filtering vibrating screen (5) and the large-scale feeding dewatering screen (6) are respectively supported by spring support frame sets
(13) Spring support frame set
(14) Is fixedly supported on the first cross beam frame (7); the damping buffering material distribution device (3) is supported and installed on the second cross beam frame (4) through a steel frame structure; the first cross beam frame (7) and the second cross beam frame (4) are fixed through a bracket (12); the staggered height of the damping buffer distributing device (3) and the coal flow main conveying belt (2) is adjusted according to the coal flow; the inclination angle of the large-scale water filtering vibrating screen (5) passes through the spring support frame set according to the water quantity
(13) Adjusting the mismatch height setting of (a); oversize outlet and buffering chute of large-scale water filtering vibrating screen (5)
(10) The inlets are communicated with each other to buffer the chute
(10) The outlet of the coal flow lifting belt (9) is positioned above the coal flow lifting belt; the buffer chute is positioned below the oversize outlet of the large-scale feeding dewatering screen (6)
(11) Is located above the coal stream lifting belt (9).
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| CN101920133A (en) * | 2010-07-13 | 2010-12-22 | 陆信 | Self-synchronizing vertical screening dewatering screen |
| CN101987325A (en) * | 2010-08-27 | 2011-03-23 | 天津百利阳光环保设备有限公司 | Comprehensive sorting and pretreating integrated equipment of kitchen garbage |
| WO2011161423A2 (en) * | 2010-06-25 | 2011-12-29 | Marshall Graham Bailey | Screening methods and apparatus |
| CN102614699A (en) * | 2012-04-26 | 2012-08-01 | 南京道科环境科技有限公司 | Fixed vibrating curved surface fine grating |
| CN106345166A (en) * | 2016-10-10 | 2017-01-25 | 深圳市城道通环保科技有限公司 | Sewage treatment device and treatment method thereof |
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| CN201940355U (en) * | 2011-02-11 | 2011-08-24 | 魏静 | Driving wheel-roll grizzly capable of adjusting inclination angles of grizzly surfaces |
| CN204298868U (en) * | 2014-11-06 | 2015-04-29 | 山东华恒矿业有限公司 | A kind of shaft sump digs system clearly |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011161423A2 (en) * | 2010-06-25 | 2011-12-29 | Marshall Graham Bailey | Screening methods and apparatus |
| CN101920133A (en) * | 2010-07-13 | 2010-12-22 | 陆信 | Self-synchronizing vertical screening dewatering screen |
| CN101987325A (en) * | 2010-08-27 | 2011-03-23 | 天津百利阳光环保设备有限公司 | Comprehensive sorting and pretreating integrated equipment of kitchen garbage |
| CN102614699A (en) * | 2012-04-26 | 2012-08-01 | 南京道科环境科技有限公司 | Fixed vibrating curved surface fine grating |
| CN106345166A (en) * | 2016-10-10 | 2017-01-25 | 深圳市城道通环保科技有限公司 | Sewage treatment device and treatment method thereof |
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