CN105833594B - A kind of self-cleaning continuous filter - Google Patents
A kind of self-cleaning continuous filter Download PDFInfo
- Publication number
- CN105833594B CN105833594B CN201610312054.0A CN201610312054A CN105833594B CN 105833594 B CN105833594 B CN 105833594B CN 201610312054 A CN201610312054 A CN 201610312054A CN 105833594 B CN105833594 B CN 105833594B
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- rotary drum
- filter
- control cabinet
- valve
- pipe
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Classifications
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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
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
-
- 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
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
-
- 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
- B01D33/80—Accessories
- B01D33/804—Accessories integrally combined with devices for controlling the filtration
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a kind of self-cleaning continuous filter.It is characterized in that：The parallel arranged tangential of two filtering rotary drums, it is rotary drum skeleton to filter rotary drum main body, filter screen is placed on the outside of rotary drum skeleton, end axle and end pipe sequentially pass through Seal end plate, axle envelope and are supported on bearing spider, filter and desilting control valve is filled in the end pipe of rotary drum, axle outer end connection rotary drum drive mechanism is held, Seal end plate is loaded on upper shell and lower house tip inside, and axle envelope is fixed on upper shell, lower house end tapping；Upper shell upper end is leakage fluid dram, and lower house is supported on base, and bottom is sequentially connected scum pipe and slagging coutrol valve, two bottom sides connection feed manifold, feed manifold end installation inlet control valve and feed pressure sensor；Hydraulic station is installed on base bottom, is connected by main oil pipe with rotary drum drive mechanism, and control cabinet is installed on lower house end rotary drum drive mechanism side.Self-cleaning ability of the present invention is strong, and treating capacity is big, continuous filtering can be achieved, it is adaptable to which a variety of solid-liquid filtrations separate operating mode.
Description
Technical field
The present invention relates to a kind of self-cleaning continuous filter, a kind of more particularly to self-cleaning for separation of solid and liquid is continuous
Filter.
Background technology
Filtering is the solid-liquid separation method commonly used in industrial production, for handling in the suspension containing solid phase, filter process
Larger solid in fluid is delayed at filter medium side and forms filter cake, and filter opening is blocked, filtration resistance increase.When filter cake is tired
When product arrives certain thickness, it is necessary to mechanical curettage, or backwash, filter process is that interval is carried out mostly.Patent
ZL201310680339.6 proposes a kind of band type drum filter, it is necessary to remove filter residue with scraper.Patent
ZL201410349637.1 proposes a kind of backwash twinfilter, and the work of two filters is controlled by State Transferring valve
State, one filter is filtered to original emulsion during backwash, using the cleaning emulsion after filtering to another filter
Cleaned, specific to each filter or discontinuous operation.Patent ZL201210540611.6 proposes a kind of automatic clear
Filter is washed, applies thrust to curved baffle using flowing with pressure of intaking, driving scroll-up/down mechanism is around cylinder inboard wall and filter core
Moved in a circle between drum outer wall, so as to be cleaned with electric brush to the outside wall surface of filter core cylinder, will be attached to filter core cylinder surface
Dirt clean out, but filter process or unidirectional, hairbrush is the filter residue for removing filter screen outer surface, still can not be clear
Except the particle of embedded sieve aperture.In a word, backwash filter needs discontinuous operation, and it is excessive that unidirectional filtering eventually results in filtration resistance,
Increase energy consumption, it is impossible to realize continuous, constant pressure filtration.
The content of the invention
It is an object of the invention to for existing filter it is not enough there is provided one kind can automatically cleaning filter screen, do not increasing
In the case of filtration resistance, continuous filtration operation is realized, larger process amount is kept, and simplify attended operation.
To reach above technical purpose, the present invention provides following technical scheme：
The present invention include filtering rotary drum, lining, upper shell, lower house, Seal end plate, rotary drum drive mechanism, bearing spider,
Axle envelope, feed manifold, leakage fluid dram, scum pipe, base, hydraulic station, control cabinet, slagging coutrol valve, desilting control valve, charging control
Valve, feed pressure sensor, main oil pipe, it is characterised in that：The parallel arranged tangential of two filtering rotary drums, loaded on upper shell and lower casing
In vivo, in upper shell, lower house inner side fitted lining, lining inner side and filtering rotary drum are tangent；Filtering rotary drum includes end axle, rotary drum bone
Frame, filter screen, end pipe, filtering rotary drum main body are rotary drum skeleton, and filter screen is placed on the outside of rotary drum skeleton, rotary drum skeleton one end connection end
Axle, other end connection end pipe, end pipe outer end dress desilting control valve, end axle outer end connection rotary drum drive mechanism, end axle and end pipe are equal
Sequentially pass through Seal end plate, axle envelope to be supported on bearing spider, Seal end plate is loaded on upper shell and lower house tip inside, axle envelope
It is fixed on upper shell, lower house end tapping；Hydraulic station is installed on base bottom, is connected by main oil pipe and rotary drum drive mechanism
Connect, control cabinet is installed on lower house end rotary drum drive mechanism side；Upper shell upper end is leakage fluid dram, and lower house is supported in base
On, lower house bottom is sequentially connected on scum pipe and slagging coutrol valve, two bottom sides connection feed manifold, feed manifold and is installed into
Expect control valve and feed pressure sensor.
Described rotary drum drive mechanism includes ratchet, driving ratchet, driving handle, hydraulic cylinder, intelligent reversing valve, non-return spine
Pawl, oil distributing pipe, key and support, ratchet are connected by key with end axle, and driving handle is enclosed on end axle outer end, and driving ratchet is installed at middle part,
End is hinged with hydraulic cylinder, and the hydraulic cylinder other end is articulated with support, and check pawl is installed in support bottom；Hydraulic cylinder passes through a point oil
Pipe is connected with intelligent reversing valve, and intelligent reversing valve connects hydraulic station by main oil pipe.
Described rotary drum skeleton is porous framework structure, and flexible.
Described filter screen is tubular construction.
During work, control cabinet sends instruction, and hydraulic station is intelligent reversing valve fuel feeding by main oil pipe, and the hydraulic cylinder of side is past
Multiple motion, drives driving handle to swing, driving handle is by driving ratchet driving pawl to laterally rotate, and check pawl can prevent spine
Wheel reversion；The hydraulic cylinder of both sides can be moved successively, it is ensured that filtering rotary drum consecutive rotations.Under the instruction of control cabinet, deslagging control
Valve processed and desilting control valve can be opened and closed in good time.
The interval time, deslagging interval time, deslagging control for striking off screen surface filter residue are set before starting according to material properties
Valve opening time processed, desilting control valve opening time and maximum feed pressure.
Control cabinet sends instruction, and inlet control valve is opened, and material enters chamber below filtering rotary drum, stream by feed manifold
Through filtering rotary drum upper and lower filter, the larger material of particle diameter is trapped within rotary drum bottom screen surface；By a setting filtration operation
Time, filtering rotary drum is turned out 180 ° successively, and the filter residue for being trapped within filtering drum surface is struck off by another filtering rotary drum, and
Inversely filtering, automatically cleaning filter screen are realized, cake deposition is in scum pipe；When to another setting time, filter residue is in scum pipe
Accumulation certain altitude, residual cake valve is opened, and is excluded filter residue, is then shut off；When filtration resistance is more than certain value, feed pressure sensor
Value of feedback is more than maximum feed pressure set points, and desilting control valve is opened, and drift is flowed back to through desilting control valve in filtering rotary drum
Charging；Filtration operation is not stopped in various operating process；It is connected to and ceases and desist order, filtration operation stops.
Compared with existing filter, the present invention has the following advantages that：Filter cake is solved to block filter screen perforate and cause
The problem of filtration resistance increase, energy consumption are increased；By automatically cleaning, backwashing system is eliminated, continuous filtering production is realized.And
And the self-cleaning continuous filter structure that the present invention is provided is novel, moving component rotating speed is low, dependable performance, and self-cleaning ability is strong, place
Reason amount is big, and material adaptability is good, and service life is long, is applicable to a variety of solid-liquid filtration separation operating modes.
Brief description of the drawings
Accompanying drawing 1 is the positive view according to self-cleaning continuous filter proposed by the invention.
Accompanying drawing 2 is the sectional view of bowing according to self-cleaning continuous filter proposed by the invention.
Accompanying drawing 3 is the left view according to self-cleaning continuous filter proposed by the invention.
Accompanying drawing 4 is the sectional view Fig. 2 A direction views of being bowed according to self-cleaning continuous filter proposed by the invention.
Accompanying drawing 5 is the sectional view Fig. 2 B direction views of being bowed according to self-cleaning continuous filter proposed by the invention.
Accompanying drawing 6 is the structural representation of the filtering rotary drum according to self-cleaning continuous filter proposed by the invention.
Accompanying drawing 7 is the rotary drum drive mechanism schematic diagram according to self-cleaning continuous filter proposed by the invention.
Accompanying drawing 8 is the operation program block diagram according to self-cleaning continuous filter proposed by the invention.
Embodiment：
With reference to the accompanying drawings, furtherly describe：
According to the present invention, as shown in Fig. 1~5, wherein 1 be leakage fluid dram, 2 be upper shell, 3 be lining, 4 be filtering rotary drum, 5
Be lower house, 6 be feed manifold, 7 be scum pipe, 8 be slagging coutrol valve, 9 be base, 10 be hydraulic station, 11 be rotary drum driving
Mechanism, 12 be bearing spider, 13 be axle envelope, 14 be Seal end plate, 15 be desilting control valve, 16 be control cabinet, 17 be main oil pipe,
18 be inlet control valve, and 19 be feed pressure sensor.
Filtering rotary drum 4 is as shown in fig. 6, wherein 4.1 being end axle, 4.2 being rotary drum skeleton, 4.3 be filter screen, 4.4 being end pipe.
Rotary drum drive mechanism 11 is as shown in fig. 7,11.1 being ratchet, 11.2 being driving ratchet, 11.3 be driving handle, 11.4 being
Hydraulic cylinder, 11.5 be oil distributing pipe, 11.6 be intelligent reversing valve, 11.7 be support, 11.8 be check pawl, 11.9 be key.
Self-cleaning continuous filter as shown in Fig. 1~Fig. 7, including filtering rotary drum 4, lining 3, upper shell 2, lower house 5,
Seal end plate 14, rotary drum drive mechanism 11, bearing spider 12, axle envelope 13, feed manifold 6, leakage fluid dram 1, scum pipe 7, base 9,
Hydraulic station 10, control cabinet 16, slagging coutrol valve 8, desilting control valve 15, inlet control valve 18, feed pressure sensor 19, main oil
Pipe 17, it is characterised in that：Two parallel arranged tangentials of filtering rotary drum 4, inside upper shell 2, lower house 5, upper shell 2, under
3 in the inner side fitted lining of housing 5, the inner side of lining 3 and filtering rotary drum 4 are tangent；Filtering rotary drum 4 includes end axle 4.1, rotary drum skeleton 4.2, filter
Net 4.3, end pipe 4.4, rotary drum skeleton 4.2 are the main bodys for filtering rotary drum 4, and filter screen 4.3 is tubular construction, and filter screen 4.3 is placed on rotary drum
The outside of skeleton 4.2, rotary drum skeleton 4.2 is flexible porous framework structure, one end connection end axle 4.1 of rotary drum skeleton 4.2, separately
One end connects end pipe 4.4, and the outer end of end pipe 4.4 dress desilting control valve 15, the end outer end of axle 4.1 connection rotary drum drive mechanism 11 holds axle
4.1 and end pipe 4.4 sequentially pass through Seal end plate 14, axle envelope 13 and be supported on bearing spider 12, Seal end plate 14 be loaded on upper casing
Body 2 and the tip inside of lower house 5, axle envelope 13 are fixed on upper shell 2, the end tapping of lower house 5；The upper end of upper shell 2 is discharge opeing
Mouth 1, lower house 5 is supported on base 9, and the bottom of lower house 5 is sequentially connected scum pipe 7 and slagging coutrol valve 8, two bottom sides connection
Inlet control valve 18 and feed pressure sensor 19 are installed on feed manifold 6, feed manifold 6；Hydraulic station 10 is installed under base 9
Portion, is connected by main oil pipe 17 with rotary drum drive mechanism 11, and control cabinet 16 is installed on the end rotary drum drive mechanism 11 of lower house 5
Side.
Described rotary drum drive mechanism 11 include ratchet 11.1, driving ratchet 11.2, driving handle 11.3, hydraulic cylinder 11.4,
Oil distributing pipe 11.5, intelligent reversing valve 11.6, check pawl 11.8, key 11.9 and support 11.7, ratchet 11.1 by key 11.9 with
The connection of the end of axle 4.1 is held, driving handle 11.3 is enclosed on the end outer end of axle 4.1, and driving ratchet 11.2, driving are installed in the middle part of driving handle 11.3
The end of handle 11.3 is hinged with hydraulic cylinder 11.4, and the other end of hydraulic cylinder 11.4 is articulated with support 11.7, and the bottom of support 11.7 is installed
Check pawl 11.8；Hydraulic cylinder 11.4 is connected by oil distributing pipe 11.5 with intelligent reversing valve 11.6, and intelligent reversing valve 11.6 passes through
Main oil pipe 17 connects hydraulic station 10.
Normal operating procedure is shown in Fig. 8, such as following：
Control cabinet 16 sends instruction during work, and hydraulic station 10 is the fuel feeding of intelligent reversing valve 11.6, side by main oil pipe 17
Hydraulic cylinder 11.4 move back and forth, drive driving handle 11.3 swing, by driving the driving pawl 11.1 of ratchet 11.2 to turn laterally
Dynamic, check pawl 11.8 can prevent ratchet 11.1 from inverting；The hydraulic cylinder 11.4 of both sides can be moved successively.In control cabinet 16
Under instruction, slagging coutrol valve 8 and desilting control valve 15 can be opened and closed in good time.
Job parameter T10, T20, T30, T40, P0 are set according to material properties before starting, T10 is to strike off the surface of filter screen 4.3
The interval time of filter residue, T20 is deslagging interval time, and T30 is the opening time of slagging coutrol valve 8, and T40 is that desilting control valve 15 is opened
Open the time, P0 is maximum feed pressure；Strike off interval time T10, the deslagging interval time T20 of the surface filter residue of filter screen 4.3 according to
Material solid concentration determines that material energy proper flow, material solid concentration is higher using shorter interval time, material solid concentration
It is relatively low to use longer interval time, T10=2~8min, T20=(2~7) * T10；8 opening time of slagging coutrol valve T30, desilting
15 opening time of control valve T40 determines that it is 5s tentatively to set T30=5s, T40=according to discharge situation, according to discharge amount of liquid
It is modified, discharge amount of liquid is big, then reduces the time；Maximum feed pressure P0 depends on the intensity of filtering rotary drum 4 and filtering is made
The economy of industry, P0=0.3~1.2MPa.The present embodiment material is oil-cut mud, and material solid concentration is relatively low, is set：T10=
5min, T20=20min, T30=2s, T40=3s, P0=0.4MPa.
Operating procedure is：
(1) control cabinet 16 is connected to startup order, instruction is sent immediately, inlet control valve 18 is opened, and material passes through feed pipe
6 are converged into chamber below filtering rotary drum 4, and filtration operation starts, and flows through the filter screen 4.3 of filtering rotary drum 4, the larger solids of particle diameter
Material is trapped within the lower surface of 4 bottom filter screen of filtering rotary drum 4.3, and control cabinet 16 starts timing, and T1, T2 increase since 0.
(2) control cabinet 16 judges whether time T1 is more than T10, if "No", then continues to filter, time increase；If
For "Yes", control cabinet 16 sends instruction, the filtering rotary drum 4 of left and right be turned out successively the filtering rotary drum on 180 °, the i.e. left side first to
Outer to rotate 180 °, then the filtering rotary drum on the right is turned out 180 ° again；Velocity of rotation is 0.5~3rpm, a filtering table of rotary drum 4
Be trapped material on face to be struck off by another filtering rotary drum 4, realize the automatically cleaning of filter screen 4.3, and realize reverse filtering, cake deposition in
In scum pipe 7, but material uninterruptedly enters filtering rotary drum 4 chamber below, continues to filter.
(3) control cabinet 16 judges whether time T2 is more than T20, and if "No", then T1 is set to 0, continues to filter；If
"Yes", control cabinet 16 sends instruction, and residual cake valve 8 is opened the T30 times, is then shut off, and excludes filter residue；But material uninterruptedly entered
The chamber below of rotary drum 4 is filtered, filter process is carried out always.
(4) control cabinet 16 judges whether feed pressure P is more than maximum feed pressure P0, and if "No", then T2 is set to 0,
Continue to filter；If "Yes", then the opening T40 times of desilting control valve 15, it is then shut off, filtering rotary drum 4 inside accretions row
Go out, flow back to charging；But material uninterruptedly enters filtering rotary drum 4 chamber below, filter process is carried out always.
(5) control cabinet 16 judges whether to be connected to and ceased and desisted order, if "No", then continues to filter, and repeat step (2)-
(4)；If "Yes", then inlet control valve 18 is closed, and is closed, is shut down after slagging coutrol valve opening time T30.
The self-cleaning continuous filter that the present invention is provided, solve filter cake block filter screen perforate and cause energy consumption increase and
The problem of production continuously can not being filtered, and structure is novel, and self-cleaning ability is strong, and treating capacity is big, and service life is long, material adaptability
It is good.
Claims (6)
1. a kind of self-cleaning continuous filter, it is characterised in that：Including filtering rotary drum, lining, upper shell, lower house, sealed end
Plate, rotary drum drive mechanism, bearing spider, axle envelope, feed manifold, leakage fluid dram, scum pipe, base, hydraulic station, control cabinet, deslagging
Control valve, desilting control valve, inlet control valve, feed pressure sensor and main oil pipe, the parallel arranged tangential of two filtering rotary drums,
It is tangent with filtering rotary drum on the inside of lining loaded in the upper shell in interior stickers lining, lower house；It is rotary drum skeleton to filter rotary drum main body,
One end connection end axle, other end connection end pipe, filter screen is placed on the outside of rotary drum skeleton, and end axle and end pipe sequentially pass through sealed end
Plate, axle envelope are supported on bearing spider, filter and desilting control valve is filled in the end pipe of rotary drum, end axle outer end connection rotary drum driving machine
Structure, Seal end plate is loaded on upper shell and lower house tip inside, and axle envelope is fixed on upper shell, lower house end tapping；Upper casing
Body upper end is leakage fluid dram, and lower house is supported on base, and bottom is sequentially connected scum pipe and slagging coutrol valve, two bottom sides connection
Feed manifold, feed manifold end is installed by inlet control valve and feed pressure sensor；Hydraulic station is installed on base bottom, passes through
Main oil pipe is connected with rotary drum drive mechanism, and control cabinet is installed on lower house end rotary drum drive mechanism side.
2. self-cleaning continuous filter according to claim 1, it is characterised in that：Described rotary drum drive mechanism includes spine
Wheel, driving ratchet, driving handle, hydraulic cylinder, intelligent reversing valve, check pawl, oil distributing pipe, key and support, ratchet pass through key and end
Axle is connected, and driving handle is enclosed on end axle outer end, and driving ratchet is installed at middle part, and end is hinged with hydraulic cylinder, and the hydraulic cylinder other end is hinged
In on support, check pawl is installed in support bottom；Hydraulic cylinder connects intelligent reversing valve by oil distributing pipe, and intelligent reversing valve passes through master
Oil pipe is connected with hydraulic station.
3. self-cleaning continuous filter according to claim 1, it is characterised in that：Described rotary drum skeleton is porous framework
Structure.
4. self-cleaning continuous filter according to claim 1, it is characterised in that：Described filter screen is cylindrical in shape.
5. the method for the self-cleaning continuous filter described in application claim 1, it is characterised in that：
Control cabinet sends instruction during work, and hydraulic station is intelligent reversing valve fuel feeding by main oil pipe, and the hydraulic cylinder of side is back and forth transported
It is dynamic, drive driving handle to swing, by driving ratchet driving pawl to laterally rotate, check pawl prevents ratchet from inverting；Both sides
Hydraulic cylinder is moved successively；Under the instruction of control cabinet, slagging coutrol valve and desilting control valve are opened and closed.
6. the method for the self-cleaning continuous filter described in application claim 1, it is characterised in that：
Setting job parameter T10, T20, T30, T40, P0 before starting, T10 is the interval time for striking off the surface filter residue of filter screen 4.3,
T20 is deslagging interval time, and T30 is the opening time of slagging coutrol valve 8, and T40 is the opening time of desilting control valve 15, and P0 is maximum
Feed pressure；
Operating procedure is：
(1) control cabinet is connected to startup order, and instruction is sent immediately, and inlet control valve is opened, and material was entered by feed manifold
Chamber below rotary drum is filtered, filtration operation starts, flow through the filter screen of filtering rotary drum, the larger solid material of particle diameter is trapped within filtering
Rotary drum bottom filter screen lower surface, control cabinet starts timing, and T1, T2 increase since 0；
(2) control cabinet judges whether time T1 is more than T10, if "No", then continues to filter, time increase；If "Yes",
Control cabinet sends instruction, and the filtering rotary drum of left and right is turned out 180 ° successively, and velocity of rotation is 0.5~3rpm, is trapped material
Struck off by another filtering rotary drum, realize filter screen automatically cleaning, cake deposition is in scum pipe, but material uninterruptedly enters under filter rotary drum
Face chamber, continues to filter；
(3) control cabinet judges whether time T2 is more than T20, and if "No", then T1 is set to 0, continues to filter；If "Yes",
Control cabinet sends instruction, and residual cake valve is opened the T30 times, is then shut off, and excludes filter residue；But material uninterruptedly enters under filtering rotary drum
Face chamber, filter process is carried out always；
(4) control cabinet judges whether feed pressure P is more than maximum feed pressure P0, and if "No", then T2 is set to 0, continues
Filter；If "Yes", then desilting control valve opens the T40 times, is then shut off, the inside accretions discharge of filtering rotary drum, flow back into
Material；But material uninterruptedly enters chamber below filtering rotary drum, filter process is carried out always；
(5) control cabinet judges whether to be connected to and ceased and desisted order, if "No", then continues to filter, repeat step (2)-(4)；If
For "Yes", then inlet control valve is closed, and is closed, is shut down after slagging coutrol valve opening time T30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312054.0A CN105833594B (en) | 2016-05-12 | 2016-05-12 | A kind of self-cleaning continuous filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312054.0A CN105833594B (en) | 2016-05-12 | 2016-05-12 | A kind of self-cleaning continuous filter |
Publications (2)
| Publication Number | Publication Date |
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| CN105833594A CN105833594A (en) | 2016-08-10 |
| CN105833594B true CN105833594B (en) | 2017-10-27 |
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| CN201610312054.0A Expired - Fee Related CN105833594B (en) | 2016-05-12 | 2016-05-12 | A kind of self-cleaning continuous filter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106915784A (en) * | 2017-04-24 | 2017-07-04 | 天津机电职业技术学院 | Horizontal liquid dung solid-liquid rough segmentation is disembarked |
| CN107875720B (en) * | 2017-12-08 | 2019-10-18 | 宁波清智环保科技有限公司 | Sewage treatment unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2590639Y (en) * | 2003-01-05 | 2003-12-10 | 王歆 | Automatic pollution removing water filtering device |
| SE531845E (en) * | 2007-12-13 | 2012-03-06 | Metso Paper Inc | Apparatus for washing and dewatering of pulp |
| CN203238057U (en) * | 2013-04-28 | 2013-10-16 | 上海东方泵业(集团)有限公司 | Crushing-type grille cleaner |
| CN103638732B (en) * | 2013-12-16 | 2015-03-11 | 丹东东方机电工程有限公司 | Band type drum filter |
| CN104069673B (en) * | 2014-07-22 | 2016-04-06 | 长治市永华机械有限公司 | Backwash twinfilter |
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