CN104324536A - Dynamic filter-press technology of filter press - Google Patents

Dynamic filter-press technology of filter press Download PDF

Info

Publication number
CN104324536A
CN104324536A CN201410466814.4A CN201410466814A CN104324536A CN 104324536 A CN104324536 A CN 104324536A CN 201410466814 A CN201410466814 A CN 201410466814A CN 104324536 A CN104324536 A CN 104324536A
Authority
CN
China
Prior art keywords
filter
press
dynamic
plate body
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410466814.4A
Other languages
Chinese (zh)
Other versions
CN104324536B (en
Inventor
贺仲宪
汪亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG GOLDENBIRD FILTER PRESS CO Ltd
Original Assignee
ZHEJIANG GOLDENBIRD FILTER PRESS CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHEJIANG GOLDENBIRD FILTER PRESS CO Ltd filed Critical ZHEJIANG GOLDENBIRD FILTER PRESS CO Ltd
Priority to CN201410466814.4A priority Critical patent/CN104324536B/en
Publication of CN104324536A publication Critical patent/CN104324536A/en
Application granted granted Critical
Publication of CN104324536B publication Critical patent/CN104324536B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a dynamic filter-press technology of a filter press. Working processes of the filter press contain two steps, including dynamic filtration and cake layer filtration. The dynamic filtration comprises the following steps: a filtrate is pumped into a filter chamber through a charge pump; eddy is generated by the utilization of an eddy generation structure among a charge channel, a filter tank and a water outlet channel; under the action of the eddy, the filtrate enters the filter chamber through the charge channel to generate shear force so as to inhibit a cake layer from thickening and make generated thinner filter cakes move and filtrate; and water produced from filtration flows out of a water outlet until the filter chamber is filled with filter cakes under the action of feed pressure. The cake layer filtration comprises the following steps: ultrahigh hydraulic pressure is applied on a filter-press unit to make two filter plates to be pushed twice as cylinder pistons; and the ultrahigh hydraulic pressure is directly transferred through the filter plates to the filter cakes so as to press filter residue, and the filter residue undergoes creep and compression and water is squeezed out when bridging strength of the filter residue is greater than the critical hydraulic pressure. According to the invention, the defect that water content of the filter cakes is high, the filter cakes are difficult to detach and loss of filter cloth is high is solved.

Description

The dynamic filter-pressing process of a kind of filter press
Technical field
The present invention relates to filter press.
Background technology
The filter-press dehydration of SMTO catalyst is a very important link during it is produced, and in whole production process, has very important effect.Existing filter-pressing process mainly contains following link: utilize cake layer work principle of filter, fed filtration, when inlet amount reaches the upper limit, time fluid is few, starts diaphragm pressing and carries out press dewatering, after press dewatering completes, carry out removal filter cake, finally dry.
Original work principle of filter and way, adopt cake layer to filter, the filter cake after filtration is thicker, and resistivity is larger, and filter more difficult, make cake moisture high, filtration time is long.Namely material is after filtration completes, still containing a large amount of moisture.So not only make the increasing of follow-up oven dry cost; And filter cake becomes mud shape to stick on filter cloth, and need workman to root out, cause cake discharge difficulty, labo r usage's increasing; Cake moisture is high, and the concentration of toxic gases contained by the inside is just high, larger to the harm of operator; Utilize hard tool to be rooted out by the filter cake sticked on filter cloth, the loss of filter cloth strengthens, and the replacement cycle is short.
Summary of the invention
Technical problem to be solved by this invention is just to provide the dynamic filter-pressing process of a kind of filter press, solves the defect that cake moisture is high, cake discharge is difficult, filter cloth loss is large.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: the dynamic filter-pressing process of a kind of filter press, filter press comprises at least one press filtration unit, each press filtration unit comprises two pieces of parallel filter plates, be provided with at adjacent filter plate outward flange position the elasticity squeeze frame be made up of elastomer frame and filter frame between two pieces of filter plates, form sealing between described elasticity squeeze frame and filter plate to make to form filter chamber between two filter plates, described elasticity squeeze frame is located at the end of filter plate, described filter plate comprises filter plate body, before and after described filter plate body, both sides are coated by filter cloth, the described filter plate body back side is filtering surface, described filter plate body front surrounding is provided with frame, the positive Middle face of described filter plate body encloses out filter pocket by frame, on the downside of described filter plate body, two corner locations are respectively equipped with charging aperture and delivery port, described filter plate body front is provided with the feeding-passage that is communicated with charging aperture and filter pocket, described filter plate body front is also provided with the exhalant canal that is communicated with delivery port and filter pocket, described feeding-passage, filter pocket, vortex generating structure is provided with between exhalant canal, filter frame inner circumferential side is located at by described elastomer frame, described filter plate is provided with a ring wing in filter plate body outer rim, the thickness of the described ring wing is less than the thickness of filter plate body, described elasticity squeeze frame is located between the ring wing of two adjacent filter plate, described elastomer frame outer circumferential side is provided with flange, described filter frame inner circumferential side is provided with draw-in groove, described flange snaps in draw-in groove,
The course of work of this filter press comprises dynamic filtration and cake layer filters two steps:
Dynamic filtration: pump into filtrate by feed pump in filter chamber, the vortex generating structure between feeding-passage, filter pocket, exhalant canal is utilized to produce eddy current, filtrate produces shearing force enter filter chamber by feeding-passage under eddy current effect after, cake layer is suppressed to thicken, the thinner filter cake of generation is made to obtain moving and filter, the product water filtered flows out from delivery port, until filter chamber is full of filter cake under feed pressure effect;
Cake layer filters: impose super high pressure hydraulic power to press filtration unit, make two pieces of filter plates make cylinder piston secondary to advance, be directly passed to filter cake by filter plate and implement squeezing to filter residue, the bridge formation intensity of filter residue is produced under the critical action of hydraulic force being greater than it, and scholar becomes, compresses, moisture of squeezing out.
Preferably, described feeding-passage comprises and the straightway of the longitudinal central axis line parallel of filter pocket and the arc section to curved extension on the upside of filter pocket longitudinal central axis line.
Preferably, described exhalant canal is and that to filter pocket longitudinal central axis line on the downside of an extend beeline channel vertical with filter pocket longitudinal central axis line.
Preferably, the posterior segment of described feeding-passage and exhalant canal is all arranged along the edge of filter pocket.
Preferably, the longitudinal cross-section of described filter pocket be upper base upper go to the bottom under ladder structure of right angle.
Preferably, the corresponding described elastomer frame of the described ring wing is provided with annular groove, and described elastomer frame is located in described annular groove.
Preferably, chamfered transition structure is provided with between the described ring wing and filter plate body.
Preferably, chamfered transition structure is provided with between described flange root and described elastomer circle.
Preferably, described filter plate body is in square, and described filter pocket is rounded.
Preferably, this filter press adopts hydraulic system as press filtration drive source.
The present invention is at feeding-passage, filter pocket, vortex generating structure is provided with between exhalant canal, the filtrate suspended in the dynamic filtration process of charging forms spiral vortex after feeding-passage enters filter pocket, spiral vortex constantly stirs the filtrate entering filter chamber, on the one hand filter cloth is washed away, prevent the initial stage of filter residue on filter medium from depositing in a large number, on the other hand, make filtrate by center to surrounding alluviation to limit thickening of filter cake, also filtering simultaneously, like this, mobile filtrate on one side, while filter, in the process of this dynamic filtration, the rate of filtration can not obviously slow down, complete after filter chamber is full of filter cake under feed pressure effect, finally super high pressure hydraulic power is imposed to it, make two pieces of filter plates make cylinder piston secondary to advance, the squeezing of filter cake enforcement to filter residue is directly passed to by filter plate, make the bridge formation intensity of filter residue under the critical action of hydraulic force being greater than it, produce scholar to become, compression, to squeeze out moisture, change and originally utilize cake layer work principle of filter, thus it is high to solve cake moisture, cake discharge is difficult, the defect that filter cloth loss is large.
Therefore beneficial effect of the present invention is embodied in:
1, cake moisture is low, and the rate of filtration is fast, reduces oven dry cost;
2, filter cake becomes pie, and moisture few filter cake intensity is large, and water content is little, and substantially reduce the adhesion of filter cake to filter medium, filter plate one is opened, and utilizes the mechanism of mechanical cake discharge, is just easy to fall down, and without the need to manually rooting out, employment reduces;
3, by reducing the toxic gas produced, the harm to operating personnel is reduced;
4, without the need to rooting out filter cake with hard tool, filter cloth damage is little, and the replacement cycle is long.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is the Facad structure schematic diagram of filter plate;
Fig. 2 is A-A generalized section in Fig. 1;
Fig. 3 is elasticity squeeze frame and connecting structure for filter plates embodiment 1;
Fig. 4 is elasticity squeeze frame and connecting structure for filter plates embodiment 2.
Detailed description of the invention
Below specific embodiment of the invention scheme is described, as shown in Figures 1 to 4, a kind of dynamic filtration filter press modified node method, comprise at least one press filtration unit, each press filtration unit comprises two filter plates 1, be provided with elasticity squeeze frame between described two filter plates, described elasticity squeeze frame is made up of elastomer frame 2 and filter frame 3, is formed and seal and form filter chamber 4 between two filter plates between described elasticity squeeze frame and filter plate.
As depicted in figs. 1 and 2, a kind of dynamic filtration filter plate 1, comprise filter plate body, described filter plate body front and the back side coated by filter cloth, the described filter plate body back side is filtering surface 17, described filtering surface is provided with convex stripe, described filter plate body front surrounding is provided with frame 11, the positive Middle face of described filter plate body encloses out filter pocket 12 by frame, on the downside of described filter plate body, two corner locations are respectively equipped with charging aperture 13 and delivery port 15, described filter plate body front is provided with the feeding-passage 14 that is communicated with charging aperture and filter pocket, described filter plate body front is also provided with the exhalant canal 16 that is communicated with delivery port and filter pocket, described feeding-passage, filter pocket, vortex generating structure is provided with between exhalant canal.
Concrete, described feeding-passage comprises and the straightway of the longitudinal central axis line parallel of filter pocket and the arc section to curved extension on the upside of filter pocket longitudinal central axis line.Described exhalant canal is and that to filter pocket longitudinal central axis line on the downside of an extend beeline channel vertical with filter pocket longitudinal central axis line.Like this, filtrate forms roughly spiral structure through feeding-passage, filter pocket, exhalant canal, and due to the jet impact force of charging, filtrate can form strong eddy current in filter chamber.Spiral vortex constantly stirs the filtrate entering filter chamber, on the one hand filter cloth is washed away, prevent the initial stage of filter residue on filter medium from depositing in a large number, on the other hand, make filtrate by center to surrounding alluviation to limit thickening of filter cake, meanwhile, also filtering, like this, mobile filtrate on one side, while filter, in the process of this dynamic filtration, the rate of filtration can not obviously slow down.
In addition, filter pocket is roughly rounded, the straightway of feeding-passage and exhalant canal and filter pocket tangent, the posterior segment of described feeding-passage and exhalant canal is all arranged along the edge of filter pocket.The end being exactly described feeding-passage in addition extends through filter pocket longitudinal central axis line, the end of described exhalant canal also extends through filter pocket longitudinal central axis line, and both to exceed the distance of filter pocket longitudinal central axis line roughly equal, test shows, the intensity and the effect that form eddy current like this can be better.
The longitudinal cross-section of described filter pocket be upper base upper go to the bottom under ladder structure of right angle, the filter pocket of so last formation and filter chamber are the little structure of the large lower space of upper space, and such venturi effect is better, and filter effect is better.
As shown in Figure 3, in elasticity squeeze frame and connecting structure for filter plates embodiment 1, filter frame 3 inner circumferential side is located at by described elastomer frame 2, described filter plate is provided with a ring wing in filter plate body outer rim, the thickness of the described ring wing is less than the thickness of filter plate body, and described elasticity squeeze frame is located between the ring wing of two adjacent filter plate, and described elastomer frame outer circumferential side is provided with flange 21, described filter frame inner circumferential side is provided with draw-in groove 31, and described flange snaps in draw-in groove.
As shown in Figure 4, in elasticity squeeze frame and connecting structure for filter plates embodiment 2, arrange the ring wing 101 equally, its corresponding described elastomer frame is provided with annular groove 102, and described elastomer frame is located in described annular groove.Chamfered transition structure is provided with between the described ring wing and filter plate body.Chamfered transition structure is provided with between described flange root and described elastomer circle.
The course of work of this filter press comprises dynamic filtration and cake layer filters two steps:
Dynamic filtration: pump into filtrate by feed pump in filter chamber, the vortex generating structure between feeding-passage, filter pocket, exhalant canal is utilized to produce eddy current, filtrate produces shearing force enter filter chamber by feeding-passage under eddy current effect after, cake layer is suppressed to thicken, the thinner filter cake of generation is made to obtain moving and filter, the product water filtered flows out from delivery port, until filter chamber is full of filter cake under feed pressure effect;
Cake layer filters: impose super high pressure hydraulic power to press filtration unit, make two pieces of filter plates make cylinder piston secondary to advance, be directly passed to filter cake by filter plate and implement squeezing to filter residue, the bridge formation intensity of filter residue is produced under the critical action of hydraulic force being greater than it, and scholar becomes, compresses, moisture of squeezing out.

Claims (10)

1. the dynamic filter-pressing process of filter press, filter press comprises at least one press filtration unit, each press filtration unit comprises two pieces of parallel filter plates, be provided with at adjacent filter plate outward flange position the elasticity squeeze frame be made up of elastomer frame and filter frame between two pieces of filter plates, form sealing between described elasticity squeeze frame and filter plate to make to form filter chamber between two filter plates, described elasticity squeeze frame is located at the end of filter plate, it is characterized in that: described filter plate comprises filter plate body, before and after described filter plate body, both sides are coated by filter cloth, the described filter plate body back side is filtering surface, described filter plate body front surrounding is provided with frame, the positive Middle face of described filter plate body encloses out filter pocket by frame, on the downside of described filter plate body, two corner locations are respectively equipped with charging aperture and delivery port, described filter plate body front is provided with the feeding-passage that is communicated with charging aperture and filter pocket, described filter plate body front is also provided with the exhalant canal that is communicated with delivery port and filter pocket, described feeding-passage, filter pocket, vortex generating structure is provided with between exhalant canal, filter frame inner circumferential side is located at by described elastomer frame, described filter plate is provided with a ring wing in filter plate body outer rim, the thickness of the described ring wing is less than the thickness of filter plate body, described elasticity squeeze frame is located between the ring wing of two adjacent filter plate, described elastomer frame outer circumferential side is provided with flange, described filter frame inner circumferential side is provided with draw-in groove, described flange snaps in draw-in groove,
The course of work of this filter press comprises dynamic filtration and cake layer filters two steps:
Dynamic filtration: pump into filtrate by feed pump in filter chamber, the vortex generating structure between feeding-passage, filter pocket, exhalant canal is utilized to produce eddy current, filtrate produces shearing force enter filter chamber by feeding-passage under eddy current effect after, cake layer is suppressed to thicken, the thinner filter cake of generation is made to obtain moving and filter, the product water filtered flows out from delivery port, until filter chamber is full of filter cake under feed pressure effect;
Cake layer filters: impose super high pressure hydraulic power to press filtration unit, make two pieces of filter plates make cylinder piston secondary to advance, be directly passed to filter cake by filter plate and implement squeezing to filter residue, the bridge formation intensity of filter residue is produced under the critical action of hydraulic force being greater than it, and scholar becomes, compresses, moisture of squeezing out.
2. the dynamic filter-pressing process of a kind of filter press according to claim 1, is characterized in that: described feeding-passage comprises and the straightway of the longitudinal central axis line parallel of filter pocket and the arc section to curved extension on the upside of filter pocket longitudinal central axis line.
3. the dynamic filter-pressing process of a kind of filter press according to claim 2, is characterized in that: described exhalant canal is and that to filter pocket longitudinal central axis line on the downside of an extend beeline channel vertical with filter pocket longitudinal central axis line.
4. the dynamic filter-pressing process of a kind of filter press according to claim 3, is characterized in that: the posterior segment of described feeding-passage and exhalant canal is all arranged along the edge of filter pocket.
5. the dynamic filter-pressing process of a kind of filter press according to Claims 1-4 any one, is characterized in that: the longitudinal cross-section of described filter pocket be upper base upper go to the bottom under ladder structure of right angle.
6. the dynamic filter-pressing process of a kind of filter press according to claim 1, is characterized in that: the corresponding described elastomer frame of the described ring wing is provided with annular groove, and described elastomer frame is located in described annular groove.
7. the dynamic filter-pressing process of a kind of filter press according to claim 6, is characterized in that: be provided with chamfered transition structure between the described ring wing and filter plate body.
8. the dynamic filter-pressing process of a kind of filter press according to claim 6, is characterized in that: be provided with chamfered transition structure between described flange root and described elastomer circle.
9. the dynamic filter-pressing process of a kind of filter press according to claim 1, is characterized in that: described filter plate body is in square, and described filter pocket is rounded.
10. the dynamic filter-pressing process of a kind of filter press according to claim 1, is characterized in that: this filter press adopts hydraulic system as press filtration drive source.
CN201410466814.4A 2014-09-15 2014-09-15 The dynamic filter-pressing process of a kind of filter press Active CN104324536B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410466814.4A CN104324536B (en) 2014-09-15 2014-09-15 The dynamic filter-pressing process of a kind of filter press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410466814.4A CN104324536B (en) 2014-09-15 2014-09-15 The dynamic filter-pressing process of a kind of filter press

Publications (2)

Publication Number Publication Date
CN104324536A true CN104324536A (en) 2015-02-04
CN104324536B CN104324536B (en) 2016-02-10

Family

ID=52399415

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410466814.4A Active CN104324536B (en) 2014-09-15 2014-09-15 The dynamic filter-pressing process of a kind of filter press

Country Status (1)

Country Link
CN (1) CN104324536B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112274982A (en) * 2020-10-09 2021-01-29 广东美邦控股集团股份有限公司 Filter pressing process of plate and frame filter press

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5929009A (en) * 1982-08-10 1984-02-16 Kurita Mach Mfg Co Ltd Inspection device of pressing membrane of pressing filter plate
EP1676617A1 (en) * 2004-12-28 2006-07-05 Franco Grigoletti Unloading element for filter press and associated supporting structure
CN102309876A (en) * 2011-08-29 2012-01-11 浙江金鸟压滤机有限公司 Improvement for dynamic filtration squeezing dewatering machine
CN102350108A (en) * 2011-08-29 2012-02-15 浙江金鸟压滤机有限公司 Dynamic filtering pressing dehydrator
CN202170288U (en) * 2011-08-29 2012-03-21 浙江金鸟压滤机有限公司 Improved dynamic filtering and squeezing dehydrator
CN202179887U (en) * 2011-08-29 2012-04-04 浙江金鸟压滤机有限公司 Dynamic filtering and squeezing dehydrator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5929009A (en) * 1982-08-10 1984-02-16 Kurita Mach Mfg Co Ltd Inspection device of pressing membrane of pressing filter plate
EP1676617A1 (en) * 2004-12-28 2006-07-05 Franco Grigoletti Unloading element for filter press and associated supporting structure
CN102309876A (en) * 2011-08-29 2012-01-11 浙江金鸟压滤机有限公司 Improvement for dynamic filtration squeezing dewatering machine
CN102350108A (en) * 2011-08-29 2012-02-15 浙江金鸟压滤机有限公司 Dynamic filtering pressing dehydrator
CN202170288U (en) * 2011-08-29 2012-03-21 浙江金鸟压滤机有限公司 Improved dynamic filtering and squeezing dehydrator
CN202179887U (en) * 2011-08-29 2012-04-04 浙江金鸟压滤机有限公司 Dynamic filtering and squeezing dehydrator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112274982A (en) * 2020-10-09 2021-01-29 广东美邦控股集团股份有限公司 Filter pressing process of plate and frame filter press

Also Published As

Publication number Publication date
CN104324536B (en) 2016-02-10

Similar Documents

Publication Publication Date Title
CN205360710U (en) But dehydration of high moisture clean coal is with superhigh pressure piston varactor pressure filter after coal slime flotation
CN204034358U (en) A kind of filter press
CN104324536B (en) The dynamic filter-pressing process of a kind of filter press
CN204034359U (en) A kind of filter press modified node method
CN104324537B (en) A kind of filter press filter-pressing process
CN204051122U (en) A kind of dynamic filtration filter press modified node method
CN203108295U (en) Plate-and-frame filter press
CN204034354U (en) A kind of dynamic filtration filter press
CN204034352U (en) A kind of dynamic filtration filter press feed structure
CN204034353U (en) A kind of dynamic filtration filter plate
CN104307227B (en) A kind of filter press modified node method
CN102974140A (en) Press filter
CN202844663U (en) Filter press
CN104307228B (en) A kind of dynamic filtration filter press modified node method
CN104307225B (en) A kind of filter press
CN104275006B (en) A kind of dynamic filtration filter press
CN104307226A (en) Dynamic-filtration filter press press-filtration technology
CN104289016B (en) A kind of dynamic filtration filter plate
CN104275007A (en) Feeding structure of dynamic filter pressure filter
CN104275005A (en) Filter pressing method adopting filter press adopting dynamic filtration
CN209848458U (en) Belt filter equipment is used in antithetical couplet alkali production
CN208726841U (en) A kind of acid and alkali-resistance filter press plate of vertical type blotter press
CN104289030B (en) A kind of hydraulic drive type filter press filter-pressing method
CN204699476U (en) A kind of plate and frame filter press
CN205340259U (en) Novel full -automatic plate and frame filter press of high -efficient pre -compaction

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant