CN202179887U - Dynamic filtering and squeezing dehydrator - Google Patents

Dynamic filtering and squeezing dehydrator Download PDF

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Publication number
CN202179887U
CN202179887U CN2011203183468U CN201120318346U CN202179887U CN 202179887 U CN202179887 U CN 202179887U CN 2011203183468 U CN2011203183468 U CN 2011203183468U CN 201120318346 U CN201120318346 U CN 201120318346U CN 202179887 U CN202179887 U CN 202179887U
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CN
China
Prior art keywords
filter
elastomer
plane
filtering
elastic
Prior art date
Application number
CN2011203183468U
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Chinese (zh)
Inventor
贺仲宪
范小华
王春利
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浙江金鸟压滤机有限公司
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Priority to CN2011203183468U priority Critical patent/CN202179887U/en
Application granted granted Critical
Publication of CN202179887U publication Critical patent/CN202179887U/en

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Abstract

The utility model discloses a dynamic filtering and squeezing dehydrator which comprises at least one filtering unit, each filtering unit comprises two parallel filtering plates, elastic squeezing frames formed by elastic bodies and filtering frames area arranged at the outer edge parts of adjacently connected filtering plates between two filtering plates, the filtering frames are arranged at the outer sides of the elastic bodies, the elastic bodies and the filtering plates are sealed and fitted together, a filtering chamber is formed by one elastic squeezing frame and two filtering plates in an enclosing way, the planes of the filtering plates arranged at the two sides of the filtering chamber are filter pressing planes, the thickness of each filtering plate at the filter pressing plane is greater than that of each elastic body at a bearing plane, and the thickness of each elastic body in an uncompressed state is more than the sum of 3.3 times of the elastic body pre-compress quantity and the elastic body compressed quantity. In the dynamic filtering squeezing dehydrator, as the thickness of each elastic body in an uncompressed state is more than 3.3 times of the elastic body pre-compress quantity plus the elastic body compressed quantity, therefore, a filter pressed plane limits the compression ratio of the elastic bodies; and furthermore, as the pre-compressing is carried out on the elastic bodies before the filter pressing, the service life of the elastic bodies is prolonged.

Description

The dynamic filtration squeezing dewatering machine
Technical field
The utility model relates to filter press.
Background technology
Existing sludge dewatering; American-European and Japan country mostly adopts vacuum belt press filtering machine, horizontal screw centrifuge and diaphragm pressing filter press mostly with China, and will carry out flocculation agent to mud according to sludge nature and handle and add filter aid and mud is carried out the reunion and the modification of fine particle.The reduction of the filter residue water capacity after the filtration mainly relies on flocculation agent in the effect of filtering the period, and the ratio of interpolation filter aid relies on.Through the vacuum belt press filtering machine; The mud that horizontal screw centrifuge is handled, water capacity is general many about 80%, and the mud water capacity of handling through the diaphragm pressing filter press is many about 60~75%; The addition of filter aid increases; The rate of filtration is accelerated, and the water capacity of filter residue descends, and the pressure of diaphragm pressing is mostly at 1.5~1.6Mpa/CM 2Use actual conditions from the technology and the equipment of existing sludge dewatering, the vacuum belt press filtering machine, the horizontal screw centrifuge automaticity is high, but the filter residue water capacity is high, can not reach the requirement of national environmental protection department regulation.The diaphragm pressing filter press is because the structure of filter plate and the restriction of material, and the obstacle that existence can't be gone beyond aspect heat resisting and pressure resisting etc. is analyzed from filtration theory; The diaphragm pressing filter press is the cake layer work principle of filter; Along with the prolongation of filtration time, filter cake thickens, and the filter cake resistivity increases; Filtering velocity descends, and filtration time is long.And membrane filter plate is made complicated, complex operation, and service life is not long, and it is high to change price, also needs water, the gas energy, and pipeline increases supporting, increases operation and expends.
The utility model content
The utility model technical problem to be solved just provides a kind of dynamic filtration squeezing dewatering machine, and is simple in structure, long service life, and efficient is high.
For solving the problems of the technologies described above; The utility model adopts following technical scheme: the dynamic filtration squeezing dewatering machine; Comprise at least one filter element, each filter element comprises two parallel filter plates, is being provided with the elasticity squeeze frame of being made up of elastomer and filter frame in abutting connection with filter plate outward flange position between two filter plates; Said filter frame is located at the said elastomer outside; Sealing is fitted between said elastomer and the filter plate, and elasticity squeeze frame and two filters surround filter chamber, and the filter plate plane of filter chamber both sides is the press filtration plane; It is characterized in that: said filter plate at press filtration plane place thickness greater than elastomer load plane place thickness, elastomer under uncompressed state thickness greater than 3.3 times of sums of elastomer pre-compacted amount and elastomer decrement.
As preferably, said elastomer thickness under uncompressed state be two filter plates the press filtration plane distance 130%.
As preferably, establish a transition inclined-plane between said press filtration plane and elastomer load plane.
As preferably, be provided with convex surface outside the said elastomer of said filter plate ring, said filter plate convex surface place thickness is provided with chamfering less than place, press filtration plane thickness between said convex surface and elastomer load plane.
As preferably, the angle between said transition inclined-plane and elastomer load plane is less than the angle of said chamfering.
Because elastomer itself has compression ratio, after repeatedly using, elastomer can comparatively fast lose efficacy; Influenced service life, the utility model with filter plate at press filtration plane place thickness greater than elastomer load plane place thickness, elastomer 3.3 times of thickness>elastomer pre-compacted amount+elastomer decrement under uncompressed state; Elastomeric compression ratio has been limited on the press filtration plane like this, before press filtration, elastomer is carried out pre-compacted simultaneously and has prolonged elastomeric service life, in addition; Because the said elastomer of the filter plate ring outside is provided with convex surface, establishes a transition inclined-plane between press filtration plane and elastomer load plane simultaneously, is provided with chamfering between convex surface and elastomer load plane; Then limited elastomeric slippage, even and small slippage arranged, also can slippage in the press filtration plane; Good sealing effect has prolonged elastomer service life indirectly.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is further described:
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
The embodiment of the utility model dynamic filtration squeezing dewatering machine is described with reference to Fig. 1; Comprise at least one filter element; Each filter element comprises between 1, two filter plate of two parallel filter plates the elasticity squeeze frame of being made up of elastomer 2 and filter frame 3 being provided with in abutting connection with filter plate outward flange position, and said filter frame 2 is located at outside the said elastomer; Filter frame thickness is less than elastomer thickness; Sealing is fitted between said elastomer and the filter plate, and elasticity squeeze frame and two filters surround filter chamber 4, and the filter plate plane of filter chamber both sides is the press filtration plane; 15 place's thickness are greater than elastomer load plane 13 place's thickness on the press filtration plane for said filter plate, and elastomer thickness under uncompressed state adds 3.3 times of elastomer decrement greater than elastomer pre-compacted amount.Said elastomer thickness under uncompressed state be two filter plates the press filtration plane distance 130%.Establish a transition inclined-plane 14 between said press filtration plane and elastomer load plane.The said elastomer of the said filter plate ring outside is provided with convex surface 11, and said filter plate convex surface place thickness is provided with chamfering 12 less than place, press filtration plane thickness between said convex surface and elastomer load plane.Angle between said transition inclined-plane and elastomer load plane is less than the angle of said chamfering.
Before pre-compacted does not promptly begin to squeeze, will exert pressure earlier that to make elastomer compression a certain amount of be the pre-compacted amount to filter plate, then the elastomer decrement is elastomer to be exerted pressure to after the pre-compacted to accomplish the elastomeric decrement of squeezing again.
The multiple of elastomer press filtration plane distance of thickness and two filter plates under uncompressed state is according to the design of elastomer compression ratio, and elasticity is bigger than more, and multiple is big more.If select polyurethane elastomer for use, place, preferred said press filtration plane thickness is 130% of elastomer load plane place thickness.Filter frame is that metal frame plays fixing said elastomeric effect.
Thickening of filter cake is the principal element that hinders filtering rate; Prevent that by the injection of liquid the initial stage of filter residue on filter medium from depositing in a large number, utilize the thickening of principle restriction filter cake of cross flow dynamic filtration, changed traditional cake filtration mechanism; Filter pulp is flowed perpendicular to the surface of filter medium; Solid is held back by medium, forms filter cake gradually and thickens the defective that the rate of filtration obviously slows down.The dynamic filtration theory application becomes a reality at the filter plant of plate frame structure.
1, two filter plates form two pistons that can advance; A middle filter frame forms a cylinder body, utilizes elastomer to do the middle boxes location between two blocks of plates, obtains a fixedly filter chamber thickness; And accomplish the conversion that the dynamic filtration by the diagonal angle of frame or inferior horn tangential admission filters to last cake layer; After the completion filter chamber is full of filter cake under the feed pressure effect, it is imposed super high pressure hydraulic power, make two filter plates make the cylinder piston secondary and advance; Be directly passed to filter cake through filter plate and implement the squeezing to filter residue, the bridge formation intensity that makes filter residue produces the scholar moisture content that becomes, compresses, squeezes out under greater than its critical action of hydraulic force.
Locate with elastomer at edge by two filter plates, forms a filter chamber, and under the pressure progradation; Make the filter chamber thickness variable; Obtain the filter chamber of fixed thickness during filtration, and accomplish the conversion that the dynamic filtration by the diagonal angle of frame or inferior horn tangential admission filters to last cake layer, and under the effect of hydraulic pressure high pressure; Elastomer distortion compression; Pressure passes to filter cake through filter plate, and filter cake is imposed the filter residue squeezing of hyperpressure, and the bridge formation intensity that makes filter residue produces the scholar moisture content that becomes, compresses, squeezes out under greater than its critical action of hydraulic force.
Advantage of the present invention (beneficial effect):
1, utilization advances to starch the shearing force that high flow velocities produces; Thereby suppressing cake layer thickens; The thin filter cake of generation is moved, and moving of the fine particle of easy blocking filter medium reduced that in the filtration period flocculation agent is agglomerated into oarse-grained dependence as fine particle; Reduced the secondary pollution of chemicals, and accelerated the rate of filtration mud.
2, adopt the dynamic filtration technology, the filtration period only forms thin filter cake, and the hydraulics resistance is lower, thereby flow is bigger, has accelerated filtering rate greatly, and has improved the strainability of filter cake, reduces the input of equipment, practices thrift and invests.
3, can be to Cake Wash and air blowing, the precision of purification material.
4, after filtration finishes; The hydraulic jack that utilizes machine itself to be put; Be directly passed to mud cake through filter plate; Impose the superelevation critical pressure, make that filter cake produces that scholar becomes, distortion, dehydration, changed protocnemes squeezing filter press fully and utilize plastics or the inflation of rubber-like diaphragm reverse side or produce hydraulic coupling and outwards bloat and make the squeezing pressure restriction state.Novel device does not almost have the generation of consumable accessory.Sludge filter cake thickness after the squeezing is even, volatilizees favourable greatly naturally to road, back filter cake moisture content.The critical pressure that filter cake is exerted pressure can reach the several times of traditional diaphragm pressing filter press.
5, simple to operate, energy consumption is low, whole filtration and overcritical hydraulic coupling have only the motor of two pumps, the one, advance the stock pump power consumption, the 2nd, the power consumption of hydraulic pump need not other types power.Whole machine using PLC is program control, carries out Automatic Control.
Dewatered sludge after this machine filters squeezing; The dewatered sludge that conforms to fully or surpass general office of current national Chinese Ministry of Environmental Protection notice defined moisture content<50% that dispatches from the factory, and (CJ/T249) regulation of standard: the mud before the landfill need carry out stabilization processes: lateral shear intensity should be greater than 25KN/M 2, moisture content<60%, the smelly degree after the sludge dewatering is less than 3 grades.

Claims (5)

1. dynamic filtration squeezing dewatering machine; Comprise at least one filter element; Each filter element comprises two parallel filter plates (1); Be provided with the elasticity squeeze frame of being made up of elastomer (2) and filter frame (3) in abutting connection with filter plate outward flange position between two filter plates, said filter frame (2) is located at the said elastomer outside, and sealing is fitted between said elastomer and the filter plate; Elasticity squeeze frame and two filters surround filter chamber (4); The filter plate plane of filter chamber both sides is press filtration plane (15), it is characterized in that: said filter plate (1) is located thickness in press filtration plane (15) and is located thickness greater than elastomer load plane (13), elastomer under uncompressed state thickness greater than 3.3 times of sums of elastomer pre-compacted amount and elastomer decrement.
2. dynamic filtration squeezing dewatering machine according to claim 1 is characterized in that: said elastomer thickness under uncompressed state be two filter plates the press filtration plane distance 130%.
3. dynamic filtration squeezing dewatering machine according to claim 2 is characterized in that: establish a transition inclined-plane (14) between said press filtration plane and elastomer load plane.
4. dynamic filtration squeezing dewatering machine according to claim 3; It is characterized in that: the said elastomer of the said filter plate ring outside is provided with convex surface (11); Said filter plate convex surface place thickness is provided with chamfering (12) less than place, press filtration plane thickness between said convex surface and elastomer load plane.
5. dynamic filtration squeezing dewatering machine according to claim 4 is characterized in that: the angle between said transition inclined-plane (14) and elastomer load plane (13) is less than the angle of said chamfering (12).
CN2011203183468U 2011-08-29 2011-08-29 Dynamic filtering and squeezing dehydrator CN202179887U (en)

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Application Number Priority Date Filing Date Title
CN2011203183468U CN202179887U (en) 2011-08-29 2011-08-29 Dynamic filtering and squeezing dehydrator

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Application Number Priority Date Filing Date Title
CN2011203183468U CN202179887U (en) 2011-08-29 2011-08-29 Dynamic filtering and squeezing dehydrator

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CN202179887U true CN202179887U (en) 2012-04-04

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102350108A (en) * 2011-08-29 2012-02-15 浙江金鸟压滤机有限公司 Dynamic filtering pressing dehydrator
CN102974142A (en) * 2012-11-16 2013-03-20 浙江金鸟压滤机有限公司 Feed inlet structure of squeezing frame of press filter
CN102974141A (en) * 2012-11-16 2013-03-20 浙江金鸟压滤机有限公司 Squeezing frame of press filter
CN102974140A (en) * 2012-11-16 2013-03-20 浙江金鸟压滤机有限公司 Press filter
CN102974139A (en) * 2012-11-16 2013-03-20 浙江金鸟压滤机有限公司 Squeezing method for press filter
CN104324536A (en) * 2014-09-15 2015-02-04 浙江金鸟压滤机有限公司 Dynamic filter-press technology of filter press

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102350108A (en) * 2011-08-29 2012-02-15 浙江金鸟压滤机有限公司 Dynamic filtering pressing dehydrator
CN102350108B (en) * 2011-08-29 2013-11-20 浙江金鸟压滤机有限公司 Dynamic filtering pressing dehydrator
CN102974142A (en) * 2012-11-16 2013-03-20 浙江金鸟压滤机有限公司 Feed inlet structure of squeezing frame of press filter
CN102974141A (en) * 2012-11-16 2013-03-20 浙江金鸟压滤机有限公司 Squeezing frame of press filter
CN102974140A (en) * 2012-11-16 2013-03-20 浙江金鸟压滤机有限公司 Press filter
CN102974139A (en) * 2012-11-16 2013-03-20 浙江金鸟压滤机有限公司 Squeezing method for press filter
CN102974139B (en) * 2012-11-16 2014-10-15 浙江金鸟压滤机有限公司 Squeezing method for press filter
CN104324536A (en) * 2014-09-15 2015-02-04 浙江金鸟压滤机有限公司 Dynamic filter-press technology of filter press
CN104324536B (en) * 2014-09-15 2016-02-10 浙江金鸟压滤机有限公司 The dynamic filter-pressing process of a kind of filter press

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Granted publication date: 20120404

Effective date of abandoning: 20131120