CN101503004B - Screw rod drum-type filter press for continuous operation - Google Patents
Screw rod drum-type filter press for continuous operation Download PDFInfo
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- CN101503004B CN101503004B CN2009100370012A CN200910037001A CN101503004B CN 101503004 B CN101503004 B CN 101503004B CN 2009100370012 A CN2009100370012 A CN 2009100370012A CN 200910037001 A CN200910037001 A CN 200910037001A CN 101503004 B CN101503004 B CN 101503004B
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- screw rod
- filter press
- groove
- infiltration
- urceolus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/26—Permeable casings or strainers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a screw cylinder type pressure filter capable of continuously working, comprising a body, a support saddle for supporting the body, and a driving device. The body is provided with a feeding hole and a discharge hole. The invention is characterized in that the body is a horizontal cylinder body, wherein a screw rod is installed at the shaft line, the screw rod penetrates through the whole cylinder body, the outer diameter of the screw rod is matched with the inner diameter of the cylinder body, the feeding hole and the discharge hole are respectively positioned at both ends of the cylinder body, and simultaneously a drainage mechanism is further provided on the cylinder body; the screw rod is connected with the driving device, the rotation of the screw rod is driven by the driving device, materials in the cylinder body are transported and dehydrated, and the squeezed water is discharged out of the cylinder body by the drainage mechanism. The pressure filter in the invention not only can realize continuous work of pressure filter for materials, but also can greatly improve the dewatering efficiency of the materials by using higher pressure to press the materials, thereby achieving the purposes of adapting to increasingly-developed industrial production development requirements for large mass and high strength.
Description
Technical field
The present invention relates to a kind of filter press that is used for material dewatering, specifically be meant a kind of screw rod drum-type filter press of working continuously.
Background technology
At present, industrial, need industrial wastewater and various material dewaterings such as Treating Municipal Sewage and chemical industry papermaking, weaving, printing and dyeing, food, leather shoes, medicine company, pottery, equipment used in the prior art all is filter press, and filter press commonly used is chamber-type press filter or belt filter press.
Chamber-type press filter is a kind of filter plant of complete service intermittent, after each press dewatering operation completion, all to stop and carry out the discharging operation, with machinery or manually the material that has dewatered is removed from filter cloth, and then repeat to begin new press filtration step, therefore its production efficiency is very low, is difficult to satisfy in enormous quantities, high-intensity production requirement.
Belt filter press is a kind of filter plant of continous way work, and it utilizes the mesh-belt conveying material to walk between cylinder, utilizes the gap press filtration material between cylinder, reaches the dehydration purpose.But the problem that belt filter press exists is: the press filtration area is less, and is difficult to adopt higher pressure squeezing material, still is not suitable for the demand of the modernized industrial production development that workload is big, intensity is high.
And, no matter be chamber-type press filter or belt filter press, because its complex structure, manufacturing cost is high, increase company investment cost, and these filter press floor spaces is bigger.
Summary of the invention
The purpose of this invention is to provide a kind of screw rod drum-type filter press of working continuously, can realize dehydrated material free of discontinuities mechanization operation to the whole process of discharging from the stock to the press dewatering, improve the press filtration efficient of material greatly.
Above-mentioned purpose of the present invention is achieved through the following technical solutions: a kind of screw rod drum-type filter press of working continuously, it comprises body, is used to support the bearing and the drive unit of body, described body is provided with charging aperture and discharging opening, it is characterized in that: described body is a horizontal cylinder, the axis place is provided with screw rod therein, described screw rod runs through whole cylindrical shell, its external diameter and cylinder internal diameter are complementary, charging aperture and discharging opening lay respectively at the both ends of cylindrical shell, simultaneously, on cylindrical shell, also offer drainage mechanism; Described screw rod links to each other with described drive unit, drives screw rod by drive unit and rotates, and the material in the cylindrical shell is carried and dewatered, and the water expelling tube that squeezing is come out by drainage mechanism is external.
When filter press of the present invention is worked, the charging aperture of filter press can be furnished with corresponding stock system and realize fill process, material to be drained off enters cylindrical shell via charging aperture, discharging opening to the other end that is positioned at cylindrical shell moves on one side under the screw rod rotation drives, be subjected to the extrusion dehydration of screw rod on one side, the water that material is separated after squeezing is discharged through drainage mechanism, then export through the material behind the screw rod press dewatering of whole cylindrical shell stroke from discharging opening, whole dehydration free of discontinuities continuous mechanized operation, thereby improve the press filtration efficient of material dewatering greatly, can satisfy in enormous quantities, high-intensity production needs.
The present invention can do following improvement: described cylindrical shell comprises inner core and urceolus, described inner core offers a plurality of infiltrations hole, the inwall of described urceolus offers many and intersects and the webbed infiltration groove that is interconnected, in described infiltration groove, offer a plurality of infiltrations hole, the infiltration hole mutual dislocation of the infiltration hole of described inner core and described urceolus, and aim at the infiltration groove, be that infiltration hole on the inner core is by the outer tube wall shutoff, material can not release cylindrical shell outside inner core seeps water the hole, but allow water in the inner core from the infiltration groove of urceolus formed in, the urceolus clearance channel flows out inner core, external through the urceolus infiltration hole expelling tube that is distributed on the infiltration groove again, the infiltration hole of described inner core and the infiltration groove of described urceolus, infiltration hole three constitutes the drainage mechanism of cylindrical shell.
Among the present invention,, can guarantee on the structure material is applied bigger squeeze force, thereby can carry out press dewatering to material to greatest extent because material is rigidity and contacts with screw rod, inner core.Infiltration groove on the outer tube inner wall plays the effect of converging press filtration water, and a plurality of infiltration grooves connect each other, makes press filtration water be easy to conflux, and the water after confluxing is external through urceolus infiltration hole expelling tube again, and infiltration hole and infiltration groove all can be designed to different shape.
The present invention can also do following improvement: between inside and outside tube one deck filter screen at least is set, help increasing the bore in inner core infiltration hole, improve drainage efficiency, simultaneously, can avoid material chip in the inner core under the effect of pressure, to enter in the infiltration groove again and stop up drainage channel.
Described filter screen can adopt flexible Web materials to make, and the filter screen as adopting macromolecular material to make also can adopt thin wire netting to make.Filter screen is provided with one deck at least, can be provided with 2 layers or 3 layers or more multi-layered as required, and multistorey strainer mesh has better filter effect, but also plumbing brings bigger resistance.
The present invention can also do following improvement: the infiltration groove of described urceolus for the transverse groove that axially is provided with along urceolus (X to) and with the vertically disposed cannelure of described transverse groove (Y to), constitute crisscross square net shape drainage channel network.
The present invention can also further do following the improvement: the infiltration groove of described urceolus is the groove of oblique setting, constitutes the network shape drainage channel network that intersects.
Safeguard drainage mechanism for convenience, but preferred implementation is the split type tubular construction that described urceolus adopts folding, it is spliced by bindiny mechanism by 2 half.During use, 2 half is assembled into a complete urceolus, when needs cleanings or more during the creeling Inner filter net, opens urceolus and can clear up/change, easy to operate, and whole filtering net change process only 1 to 2 staff of need get final product.
The present invention can also do following further improvement: described filter press can also be provided with the switch assembly of automatic control discharging humidity, described switch assembly comprises driving mechanism for switches, the nozzle end plate, lifting screw, flashboard and be used to control the open/close controlling organization of discharging, described nozzle end plate is the shrouding of cylindrical shell tail end, offer valve opening on it, one end of described lifting screw links to each other with driving mechanism for switches, its other end is connected with flashboard, lifting screw can rise under the effect of driving mechanism for switches, motion is fallen, the drive flashboard moves up and down, offer the lock hole on the described flashboard, by moving up and down of flashboard, the size of lock hole and valve opening overlapping area changes, and controls the size that valve opening is opened.
Because the humidity of discharging and the pressure in the cylindrical shell have certain relation, be that the interior pressure of cylindrical shell is big more, the material dewatering rate is just high more, therefore, controlling organization in the switch assembly can have Pressure gauge or pressure sensor, the former is used for the situation that the Artificial Control valve opening is opened size, the latter then can realize the purpose of autocontrol valve hole unlatching size, further supporting pressure is set the words of adjuster, can also make the present invention adapt to the requirement that various material dewaterings are controlled humidity automatically: promptly control the size that valve opening is opened by the force value in the pressure sensor induction cylindrical shell of described controlling organization, thus the humidity of control discharging.When the cylinder internal pressure of sensing when switch assembly reached setting value, the rotation of drive mechanism screw rod was descending, and the lock hole overlaps to coincidence fully gradually with valve opening, and valve opening is opened gradually until maximum; If the unmatched words of the charging rate of filter press and discharging speed, valve opening is opened greatly more, the suffered force value of material will be more little in the cylindrical shell, when the force value of switch assembly induction when setting value is more and more far away, the screw rod rotation is up, lock hole and valve opening can stagger gradually, make valve opening get over Guan Yuexiao, the suffered force value of material in the cylindrical shell will be increasing, and when pressure acquired a certain degree, screw rod can be held valve opening greatly again in counter motion.Therefore, set up switch assembly, can be according to dehydration requirement to material, the cylinder internal pressure that utilization is sensed and the acting in conjunction in lock hole are controlled the required humidity of material discharging, thereby are controlled the quality of material dewatering automatically.
Among the present invention, the aperture of described valve opening is more than or equal to the aperture in lock hole, because the present invention is moving by the lock hole, control the perforate size of valve opening, generally require two apertures to equate that the lock hole is in moving process, the pressure accumulation value that can guarantee dehydrated material is continuous force value.
The position of nozzle pressing plate and flashboard relation is as follows among the present invention: offer the guide rail that square groove is made flashboard on the described nozzle pressing plate, the size of described square groove and the size of described flashboard are complementary, described flashboard can move up and down along described square groove, and square groove plays the effect to the flashboard guiding.
Compared with prior art, the present invention has following remarkable result:
(1) filter press of the present invention adopts screw rod squeezing mode, by the continuous rotation of screw rod dehydrated material is squeezed, the drainage mechanism of the water that squeezing is come out on cylindrical shell discharged, only needing drive unit to drive screw rod constantly works, can realize the press filtration serialization operation of material, and the present invention also can adopt higher pressure squeezing material, improves the dewatering efficiency of material greatly, thereby reaches the purpose that adapts to growing in enormous quantities, high-intensity suitability for industrialized production growth requirement.
(2) suffered power is synthesized by two power in the material dewatering process among the present invention, the first is from the continuous rotation of screw rod and the press filtration power that forms, its two be with material pump into the tube in the formed press filtration power of pump pressure, two synthetic actings in conjunction of power help reaching good press filtration effect on dehydrated material.
(3) be rigidity and contact with screw rod, inner core owing to material among the present invention, the power that the screw rod rotation produces is directly passed to material, power is free of losses in transmittance process, can guarantee on the structure material is applied bigger squeeze force, overcome in the prior art because filter press all is by filter cloth material to be carried out filtering means dehydration, cause structurally being difficult to material is applied the defective of big pressure, thereby can implement the press dewatering of great dynamics material.
(4) filter press urceolus of the present invention can adopt split-type structural, need cleaning or more during the creeling Inner filter net, open urceolus and get final product, than traditional structure of pressing filter, filter press of the present invention is very convenient on this link of replacing filter cloth, can also save cost and time that filter screen is safeguarded simultaneously.
(5) filter press of the present invention is provided with the switch assembly of automatic control discharging humidity, by moving up and down of flashboard, the variation of control lock hole and valve opening overlapping area, the size that the control valve opening is opened, control the humidity of discharging, thereby control the quality of material dewatering automatically.
(6) structure of pressing filter of the present invention is simple, and the critical piece of whole machine body is cylindrical shell and screw rod, and institute takes up space less, and low cost of manufacture and easy operating applicable to various press filtration operations, are easy to promote the use of.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further details.
Fig. 1 is the structural representation front view of the filter press of one of embodiment of the invention;
Fig. 2 is the structural representation front view that the filter press of one of embodiment of the invention has partial cutaway;
Fig. 3 is the A-A profile of Fig. 1;
Fig. 4 is the urceolus open mode figure among Fig. 3;
Fig. 5 is the partial structurtes enlarged drawing of the filter press outer tube inner wall of one of embodiment of the invention;
Fig. 6 is the structural representation front view of the filter press switch assembly of one of embodiment of the invention;
Fig. 7 is the local figure of nozzle end plate of the filter press switch assembly of one of embodiment of the invention.
Fig. 8 is the structural representation front view of two filter press of the embodiment of the invention;
Fig. 9 is the structural representation front view that two filter press of the embodiment of the invention has partial cutaway;
Figure 10 is the B-B profile of Fig. 8.
The specific embodiment
As Fig. 1 to a kind of screw rod drum-type filter press of working continuously shown in Figure 7 be one of embodiments of the invention, it comprises body, be used to support the bearing 10 of body, the switch assembly at screw rod 14, spiro driving device 1, drainage mechanism, the charging aperture 2 that lays respectively at the body both ends and discharging opening 9 and discharging opening place, wherein, body adopts horizontal cylinder, described screw rod 14 is positioned at the place, axis of cylindrical shell, its external diameter and cylinder internal diameter are complementary, and the external diameter of promptly described screw rod 14 is slightly less than cylinder internal diameter; Described screw rod 14 links to each other with drive unit 1, drives screw rod 14 by drive unit 1 and rotates, and the material in the cylindrical shell is carried and dewatered, and the water that squeezing is come out is then external by the drainage mechanism expelling tube; Charging aperture 2 is used for linking to each other with the stock system, so that charging in cylindrical shell continuously; Material is through discharging opening 9 outputs of the whole stroke squeezing of cylindrical shell back from the cylindrical shell tail end.
The cylindrical shell of present embodiment is by inner core 13, urceolus 3 and filter screen 12 are formed, inner core is fixedly mounted on the bearing 10, in one deck filter screen 12 is arranged on, between the urceolus, filter screen 12 is made by nylon material, on inner core 13 walls, offer a plurality of through holes as infiltration hole 13a, then offering many on the inwall of urceolus 3 intersects and the webbed infiltration groove 3c that is interconnected, infiltration groove 3c is divided into a plurality of bumping square 3b with the inwall of urceolus 3, this infiltration groove 3c be along urceolus axially the transverse groove of setting (X to) and with the vertically disposed cannelure of transverse groove (Y to), constitute crisscross square net shape drainage channel network, in infiltration groove 3c, offer a plurality of infiltrations hole 3a, the infiltration hole 3a mutual dislocation of the infiltration hole 13a of inner core and urceolus, and 3c aims at the infiltration groove, be that infiltration hole 13a on the inner core is by the outer tube wall shutoff, material can not release cylindrical shell outside inner core seeps water hole 13a, but allow water in the inner core enter the infiltration groove 3c of urceolus formed in, the urceolus clearance channel, external through the urceolus infiltration hole 3a expelling tube that is distributed on the infiltration groove 3c again, the infiltration groove 3c of the infiltration hole 13a of inner core and urceolus, the infiltration hole 3a three of urceolus constitutes the drainage mechanism of cylindrical shell.
But the urceolus 3 in the present embodiment adopts the split type tubular construction of folding, it is spliced by bindiny mechanism by 2 half, bindiny mechanism is arranged on 11 and three pairs of foldings of three pair twists folders on half to clamp 4,2 half and be hinged by strand folder 11, clamps for 4 fastening linking to each other by folding.
The discharging opening of present embodiment has adopted the switch assembly that can control the discharging humidity automatically, this switch assembly is by driving mechanism for switches 5, nozzle end plate 7, lifting screw 6, flashboard 8 is formed with the controlling organization that is used for the action of gauge tap driving mechanism, nozzle end plate 7 is the shroudings that are fixed on tube port within the cylindrical shell tail end, play the pedestal effect of switch assembly simultaneously, the discharging opening 9 of taper is arranged on the foreign side of nozzle end plate 7, offer valve opening 7a and square groove 7b on the described nozzle end plate 7, described square groove 7b play the guiding role as the guide groove that flashboard 8 moves up and down, the size of its size and flashboard 8 is complementary, and flashboard 8 can move up and down in square groove 7b.Driving mechanism for switches 5 is positioned at the top of nozzle end plate 7, it comprises the motor and speed reducer structure, one end of lifting screw 6 links to each other with the reducing gear in the driving mechanism for switches, its other end is connected with flashboard 8, lifting screw 6 can rise under the effect of driving mechanism for switches 5, motion is fallen, and drive flashboard 8 moves up and down, offer lock hole 8a on the flashboard 8, this lock hole 8a equates with the aperture of described valve opening 7a, flashboard 8 is in the process that moves up and down, and lock hole 8a overlaps with valve opening 7a or staggers: when lock hole 8a overlapped fully with valve opening 7a, the opening of switch assembly was opened maximumly, discharging speed is the fastest, but can make the suffered force value of material in the cylindrical shell become minimum; When lock hole 8a and valve opening 7a staggered, both overlapping areas were more little, and the opening of switch assembly is opened more for a short time, but the suffered force value of material in the cylindrical shell can be big more.Described controlling organization adopts the pressure sensitive device to realize that switch assembly regulates both registration with the force value in the cylindrical shell, i.e. the size of gauge tap assembly opening, thus reach the purpose of the humidity of control discharging opening 9 dischargings.
The infiltration groove of offering in the urceolus 3 of the filter press in the present embodiment also can adopt the groove of oblique setting, constitutes the network shape drainage channel network that intersects.
In addition, below cylindrical shell, water leg can be set, be used to collect the press filtration water that flows out from cylindrical shell, so that press filtration water is carried out follow-up processing.
Fig. 8 to a kind of screw rod drum-type filter press of working continuously shown in Figure 10 be second embodiment of the present invention, with the difference of previous embodiment be:
(1) screw rod 14 runs through whole cylindrical shell, and its two ends are installed in the two ends of cylindrical shell, so that improve the press filtration intensity of screw rod.
(2) discharging opening that will be positioned at the cylindrical shell tail end changes into horizontally, and promptly the axis of discharging opening 9 is vertical with the axis of cylindrical shell, and switch assembly is arranged on horizontal discharging opening place.Described switch assembly still is made up of driving mechanism for switches 5, nozzle end plate 7, lifting screw 6, flashboard 8 and controlling organization, but described nozzle end plate 7 is not arranged on the shrouding of cylindrical shell tail end, but be fixed within the cylindrical shell on the tube cylindrical outer wall pedestal as switch assembly, and have through hole corresponding to the valve opening 7a place on the described nozzle end plate 7 at the inner core cylindrical outer wall, in addition, described switch assembly and all identical with previous embodiment with the syndeton of discharging opening 9.
Claims (9)
1. the screw rod drum-type filter press that can work continuously, it comprises body, be used to support the bearing (10) and the drive unit (1) of body, described body is provided with charging aperture (2) and discharging opening (9), it is characterized in that: described body is a horizontal cylinder, the axis place is provided with screw rod (14) therein, its external diameter and cylinder internal diameter are complementary, charging aperture (2) and discharging opening (9) lay respectively at the both ends of cylindrical shell, simultaneously, on cylindrical shell, also offer drainage mechanism, described cylindrical shell comprises inner core (13) and urceolus (3), described inner core (13) offers a plurality of infiltrations hole (13a), the inwall of described urceolus (3) offers many and intersects and the webbed infiltration groove (3c) that is interconnected, in described infiltration groove (3c), offer a plurality of infiltrations hole (3a), infiltration hole (3a) mutual dislocation of the infiltration hole (13a) of described inner core and described urceolus, and aim at the infiltration hole (13a) of described inner core and the infiltration groove (3c) of described urceolus with infiltration groove (3c), infiltration hole (3a) three constitutes the drainage mechanism of cylindrical shell; Described screw rod (14) links to each other with described drive unit (1), drives screw rod (14) by drive unit (1) and rotates, and the material in the cylindrical shell is carried and dewatered; The water that squeezing is come out from material is then external by the drainage mechanism expelling tube.
2. screw rod drum-type filter press of working continuously according to claim 1 is characterized in that: between described inside and outside tube (13,3) one deck filter screen (12) at least is set.
3. screw rod drum-type filter press of working continuously according to claim 2, it is characterized in that: the infiltration groove (3c) of described urceolus for the transverse groove that axially is provided with along urceolus and with the vertically disposed cannelure of described transverse groove, constitute crisscross square net shape drainage channel network.
4. screw rod drum-type filter press of working continuously according to claim 2 is characterized in that: the infiltration groove (3c) of described urceolus is the groove of oblique setting, constitutes the network shape drainage channel network that intersects.
5. according to any described screw rod drum-type filter press of working continuously in the claim 1～4, it is characterized in that: described urceolus (3) but be the split type tubular construction of folding, it is spliced by bindiny mechanism by 2 half.
6. screw rod drum-type filter press of working continuously according to claim 5, it is characterized in that: described bindiny mechanism is that the strand folder (11) and the folding that are arranged on described half clamp (4), 2 half by strand folder (11) and folding clamping (4) are fastening links to each other.
7. screw rod drum-type filter press of working continuously according to claim 5, it is characterized in that: the switch assembly of locating to be provided with automatic control discharging humidity at described discharging opening (9), described switch assembly comprises driving mechanism for switches (5), nozzle end plate (7), lifting screw (6), flashboard (8) and be used to control the open/close controlling organization of discharging, described nozzle end plate (7) is the shrouding of cylindrical shell tail end, offer valve opening (7a) on it, one end of described lifting screw (6) links to each other with driving mechanism for switches (5), its other end is connected with flashboard (8), lifting screw (6) can rise under the driving of driving mechanism for switches (5), motion is fallen, driving flashboard (8) moves up and down, has lock hole (8a) on the described flashboard (8), by moving up and down of flashboard (8) the lock hole (8a) and the size of valve opening (7a) overlapping area are changed, come the size of gauge tap assembly opening.
8. screw rod drum-type filter press of working continuously according to claim 7 is characterized in that: the aperture of described valve opening (7a) is more than or equal to the aperture of lock hole (8a).
9. screw rod drum-type filter press of working continuously according to claim 7, it is characterized in that: offer square groove (7b) on the described nozzle end plate (7), described square groove (7b) play the guiding role as the guide groove that flashboard (8) moves up and down, the size of its size and described flashboard (8) is complementary, so that flashboard (8) moves up and down along described square groove (7b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100370012A CN101503004B (en) | 2009-01-24 | 2009-01-24 | Screw rod drum-type filter press for continuous operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100370012A CN101503004B (en) | 2009-01-24 | 2009-01-24 | Screw rod drum-type filter press for continuous operation |
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| Publication Number | Publication Date |
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| CN101503004A CN101503004A (en) | 2009-08-12 |
| CN101503004B true CN101503004B (en) | 2011-07-20 |
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| CN2009100370012A Expired - Fee Related CN101503004B (en) | 2009-01-24 | 2009-01-24 | Screw rod drum-type filter press for continuous operation |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423557B (en) * | 2011-08-19 | 2014-09-10 | 姚根发 | Solid-liquid separation press filter |
| JP6701098B2 (en) * | 2014-06-11 | 2020-05-27 | ヒタチ ゾウセン イノバ アクチェンゲゼルシャフト | Screw press for concentrating and dewatering suspensions |
| CN108409102B (en) * | 2018-05-20 | 2024-06-07 | 湖南滇湘市政建设工程有限公司 | Split type multi-chamber pressure filtration sludge dewatering device |
| CN109696050B (en) * | 2019-02-21 | 2024-04-05 | 无锡方大环保科技有限公司 | High-pressure adjustable spiral dehydrator |
| CN112485190B (en) * | 2020-11-24 | 2023-05-30 | 江苏富淼科技股份有限公司 | Filter-pressing testing arrangement |
| AU2022346441A1 (en) * | 2021-09-20 | 2024-04-18 | Papyrus Australia Limited | Method and apparatus for producing a mouldable cellulosic fibrous material |
| CN114772897B (en) * | 2022-05-13 | 2023-08-15 | 峰水(上海)水处理系统有限公司 | Intelligent sludge dewatering treatment system for water supply and drainage |
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| CN1059860C (en) * | 1994-03-24 | 2000-12-27 | 范恩分离器有限公司 | Screw press separator for separating and dewatering from liquid media containing solids |
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| CN1059860C (en) * | 1994-03-24 | 2000-12-27 | 范恩分离器有限公司 | Screw press separator for separating and dewatering from liquid media containing solids |
| CN2256809Y (en) * | 1996-01-30 | 1997-06-25 | 辽宁省农牧业机械研究所 | Helical residue dewaterer |
| CN2806121Y (en) * | 2005-07-29 | 2006-08-16 | 阜新市华兴农牧机械有限公司 | Water squeezer |
| CN201056058Y (en) * | 2007-06-11 | 2008-05-07 | 诸城市恒基机械制造有限公司 | Water wringer |
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| JP特开2005-230840A 2005.09.02 |
| JP特开2005-66698A 2005.03.17 |
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| CN101503004A (en) | 2009-08-12 |
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