CN1030434C - Mechanical extruding type continuous filter press - Google Patents

Mechanical extruding type continuous filter press Download PDF

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Publication number
CN1030434C
CN1030434C CN 87102662 CN87102662A CN1030434C CN 1030434 C CN1030434 C CN 1030434C CN 87102662 CN87102662 CN 87102662 CN 87102662 A CN87102662 A CN 87102662A CN 1030434 C CN1030434 C CN 1030434C
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China
Prior art keywords
filter
rotary drum
sealing
filter cake
filter press
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Expired - Lifetime
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CN 87102662
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CN87102662A (en
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程忠良
赵儒初
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Shanghai Science And Technology Consulting Service Center
Shanghai Research Institute of Chemical Industry SRICI
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Shanghai Science And Technology Consulting Service Center
Shanghai Research Institute of Chemical Industry SRICI
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Priority to CN 87102662 priority Critical patent/CN1030434C/en
Publication of CN87102662A publication Critical patent/CN87102662A/en
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Publication of CN1030434C publication Critical patent/CN1030434C/en
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Abstract

The present invention relates to a separation device, particularly to a mechanical extruding type continuous pressurizing vacuum rotary drum filter press for solid and liquid separation, which is mainly composed of a casing, a center allocation head, a rotary drum, etc., wherein the inner ring of the casing is in an Archimedes spiral mode, the center allocation head is capable of automatically switching over gas and liquid, and the surface of the rotary drum is provided with a filter cake empty chamber which is composed of a plurality of filter plates, separating rings and separating strips. Inlet seal, outlet seal and filter cake washing seal all adopt the form that the circular arc surface of a sealing plate forms a plurality of chamfering self-sealing strips. The mechanical extruding type continuous pressurizing vacuum rotary drum filter press can press, feed and suck medium slurry with high viscosity in vacuum to form filter cakes, mechanically extrude and continuously dewater the filter cakes, and separate solid from liquid. Meanwhile, pressure clear water can be used for spraying and washing the filter cakes for one to two times.

Description

Mechanical extruding type continuous filter press
Technical field under the present invention is a separator, particularly belongs to the press filtration machinery of liquid/solid.
Filter machinery and handle at industrial department such as chemical industry, metallurgy, ore dressing, oil, food, papermaking, sugaring, chemical fibre and three industrial wastes that tool plays a very important role in the sludge dewatering.In order to handle the medium of high-viscosity material, often need to use pressure filtration equipment, and these kind equipments such as the plate and frame type filter-press of extensive use at present, pressure leaf filter, tubular filter press, microporous pipe pressure filter all can not continued operation, that have even airtight performance is very poor, when handling poisonous material, can cause the pollution of environment, directly influence operating personnel's health.In order to solve more above-mentioned problems, pressurization vacuum disk filter, pressurization vacuum-type drum filter have appearred around the sixties.Wherein West Germany BHS-Fest type filter is exactly a kind of of pressurization vacuum-type drum filter.Figure 10 is the schematic diagram of BHS-Fest type filter, and this machine can turn round continuously, vacuum continuous sucking filtered fluid, and depended on pressure is 2.94 * 10 but the filter medium dehydration only separates 6The compressed-air actuated gas pressure of Pa forms filter cake, and the rate of cake moisture content that obtains is higher, thus when unloading filter cake except blowback air, also will lean on mechanical system to take out, and the washing filter cake accounts for about 30% of filter area, influence filter efficiency.
The objective of the invention is to develop a kind of processing, to filter slurry adaptability strong, and particularly viscosity is big, particle is thin, the slurry of volatile, noxious material or radioactive substance, the efficient height, and filter capacity is big, the filtration machinery that rate of cake moisture content is low.
This engine housing is divided into upper and lower two parts, inner walls is the involute of falling the Archimedian screw, housing inner liner stainless steel sheet, with rotary drum periphery composition gap from big to small, upper shell has one to two slot that washing filter cake sealing device is installed, and an oblate secondary spray quinoline pipe of vertically installing is arranged on the top; The both sides of lower house have peep hole and exit seal hole respectively, and the below in exit seal hole is filtered solid outlet and blanking plate device, filter cloth spray quinoline device and inlet seal hole.The below of peep hole is a charging aperture.The both sides of housing all have several maintenance installing holes regularly.Order is arranged and is being fixed many filters on the periphery of rotary drum, multiple on the filtering surface of filter with prismatic stainless (steel) wire sheet, the outside clads filter cloth again, lattice circle and dividing strip are arranged between the filter, filter is lower than lattice circle and dividing strip, form many empty chambers of filter cake on the rotary drum, because the filter setting height(from bottom) can be regulated within the specific limits according to the different-thickness of filler strip, the height of the empty chamber of filter cake also can correspondingly change.The both sides of rotary drum are sealing rings, and compress by trim ring, one end of rotary drum is the pinion transmission on gear wheel and the motive power output shaft, the other end is the central dispense head, gas-liquid can automatically switch, the central dispense head is by housing, shell is formed in capping, housing bottom has liquid outlet, one side has the blowback gas port, the shell nozzle end has the static friction sheet and the movable friction plate of a pair of contact disk sealing, the static friction sheet is fixedly mounted in the central dispense head capsule body on the disk by screw, the movable friction plate thread connection is fixed on rotary drum one side at central shaft one end of central dispense head by the screw coaxial line, movable friction plate and static friction sheet two O-ring planes rely on the sealing of compression spring compression, the compression spring is pressed in the middle of two spring bases that are placed in central shaft by nut, between inboard spring base and housing one single direction thrust ball bearing is arranged, central shaft can the run-in synchronism of transfer drum with movable friction plate like this.Movable friction plate and static friction sheet are made by stainless steel 1Cr18Ni9Ti and polytetrafluoroethylene (PTFE) respectively, static friction sheet sealing surface has difference position air slot, intake chute, difference position blowback pore, blowback pore and vacuum drawing liquid hole are arranged on the movable friction plate, difference position, gas-liquid hole is uniform and be symmetrical in the static friction sheet, every filter plate two ends on the rotary drum all have one to go out filtrate hole and the entrance pressure pore that contracts, and liquid hole and pore are connected with a central dispense movable friction plate by fluid-through tube and breather pipe respectively and be summarized in the central dispense head.The material manufacturing of oil resistant high abrasion is all adopted in inlet seal, exit seal and the sealing of washing filter cake, can adopt polyammonium grease rubber.Have many one side that self-styled sealing strip under the pressure of one chamfering is arranged on the sealing surface of circular arc, chamfering direction and rotary drum running are along direction.Vertically there is a shower at the middle part that the washing filter cake is sealed in arc surface, on shower, there are many press waters to be the hole of fan-shaped spray, in the middle of shower, connect a vertical pressure clear water water inlet pipe, also there is a shower to reach and its vertical pressure clear water water inlet pipe that connects at filter press upper shell top, the present invention can be subjected to mechanical presses again to the high-viscous media slurry behind forced feed, vacuum draw, formation filter cake, simultaneously, filter cake is separated through pressure clear water one to the spray washing of the secondary solid-liquid dehydration that turns round continuously.
Advantage of the present invention is: to arrange the rate of cake moisture content that unloads low because slurry is subjected to mechanical presses behind forced feed, vacuum draw, formation filter cake, and filter cake can improve work efficiency easily by the blowback air self-unloading.The thickness of filter cake can be regulated by the difference of material variety, and the Separation of Solid and Liquid adaptability of the sad filter pulp material little to grain matter, that viscosity is big is strong.The compressible material filtering of applicable again filter cake, and be under the condition of totally-enclosed, to dewater to separate to the filtration that volatilization, noxious material and radioactive substance are arranged, do not pollute the environment.Filter cake is subjected to a pressurization washing to secondary, and the solution in the filter cake is further reclaimed.Simultaneously simple and compact for structure, the overall process automatic continuous operation has been saved the labour, reduces labor intensity, and the filter cloth continuous wash is effective, and loss is low, and maintenance cost is little.
The present invention will be illustrated more clearly in according to the accompanying drawing of the following example:
Fig. 1 is a front view of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is the structural front view that need not wash the filter cake device.
Fig. 4 is the structure side view that need not wash the filter cake device.
Fig. 5 is the housing schematic diagram.
Fig. 6 is the filter front view.
Fig. 7 is the filter side view.
Fig. 8 is a central dispense schematic diagram.
Fig. 9 is a central dispense movable friction plate schematic diagram.
Figure 10 is a central dispense static friction sheet schematic diagram.
Figure 11 is into and out of the sealing plate front view.
Figure 12 is into and out of the sealing plate vertical view.
Figure 13 is a washing filter cake sealing device sealing plate front view.
Figure 14 is a washing filter cake sealing device sealing plate vertical view.
Figure 15 is a West Germany Fest structure of pressing filter schematic diagram.
Among the figure: 1 housing, 2 central dispense heads, 3 bearing caps, 4 rotary drums, 5 filters, 6 sealing rings, 7 trim rings, 8 suspension ring, 9 secondary spraying pipes, 10 lattice circles, 11 breather pipes, 12 fluid-through tubes, 13 washing filter cake sealings, 14 bearings, 15 gear wheels, 16 pinions, 17 exit seals, 18 blanking plate devices, 19 filter cloth spray equipment clear water water inlet pipes, 20 filter cloth spray equipment bilge discharge pipes, 21 inlet seals, 22 charging apertures, 23 spiral of Archimedes, 24 go out filtrate hole, 25 entrance pressures filter pore, a 26 central dispense liquid outlet, 27 central dispense head capsule bodies, the capping of 28 central dispense, a 29 central dispense central shaft, 30 single direction thrust ball bearings, 31 static friction sheets, 32 movable friction plates, 33 spring bases, 34 compression springs, 35 nuts, 36 dispensing head blowback gas ports, 37 blowback pores, 38 vacuum drawing liquid holes, a 39 difference air slot, a 40 difference blowback pore, self-styled sealing strip under 41 pressure, the empty chamber of 42 filter cakes.
Shown in Fig. 2,5, present embodiment housing 1 is made up of upper and lower two parts, and whole inner walls is the involute of falling the Archimedian screw 23, is anticorrosion, and reduces extrusion friction power, housing inner liner stainless steel sheet, and shell bears pressure 14.71 * 10 5Pa is one side lower house is outlet of filter cake slag dumping and filter cloth regeneration washing zone.Blanking plate device 18 is equipped with in filter cake slag dumping exit, and filter cake is discharged along blanking plate.Filter cloth regeneration washing zone is a vast sky groove on the inner walls, and the bilge discharge pipe 20 of filter cloth spray equipment is arranged at the lowest part of groove.The clear water water inlet pipe 19 of spray washing filter cloth is arranged at the top of groove, and exit seal 17 is equipped with in slag dumping outlet top, and there is inlet seal 21 below in washing zone, and the another side of lower house is slip charging aperture 22 and peep hole.Both sides, upper shell top are lifting nut suspension ring 8, and the centre is a secondary pressure (hydraulic) water filter wash cake shower 9, and sidepiece has one to two slot according to the size of filter press filter area, and washing filter cake sealing 13 is installed in sealing in the hole.The both sides of housing all have several uniform maintenance installing holes regularly.
Shown in Figure 13,14: there is a groove at the vertical middle part of washing filter cake sealing, and an oblate shower is arranged in the groove, with secondary pressure (hydraulic) water filter wash cake shower 9 many apertures that make press water be fan-shaped spray is arranged equally on the shower face.A vertical with it water inlet pipe that connects is arranged on the back side of shower face, stretch out from the back side of washing filter cake sealing plate and connect the pressure clarified water pump.There are many one side that self-styled sealing strip 41 under the pressure of one chamfering α is arranged on the circular arc sealing surface, the chamfering direction of self-sealed article and rotary drum running are along direction, α is to be advisable most in 25-40 degree angle, and the manufacturing of oil resistant high abrasion resisting material is adopted in the sealing of washing filter cake, and present embodiment adopts polyammonium grease rubber.
Rotary drum 4 is cylinder, two ends and housing 1 be corresponding several maintenance installing holes regularly, the periphery of rotary drum is by the lattice circle 10 and the dividing strip of square crossing surround many empty chambers in length and breadth, lattice circle and dividing strip are contour, the empty indoor filler strip that equal height is all arranged, filter 5 rests on the filler strip that to be fastened on the rotary drum periphery sky with nut indoor, and filter 5 is lower than lattice circle, dividing strip 3-16 millimeter, forms the empty chamber 42 of many filter cakes.According to the difference of filtering slurry, the adjustment filler strip makes filter be installed in height and regulates in the 3-16 millimeter, thereby makes the also corresponding change of thickness of the empty chamber of filter cake.The both sides of rotary drum are that sealing ring 6 is compressed by trim ring 7.One end of rotary drum is a transmission device, a pair of exposed gear gear wheel 15 is housed connects with the twin-stage cycloidal planetary gear speed reducer with pinion 16, and by electromagnetic coupling asynchronous motor connection carrying out changed speed operation.The other end is a central dispense 2.Rolled by bearing 14 with housing and connect in the rotary drum two ends, there is bearing cap 3 in the two bearings outside.
Shown in Fig. 6,7, filter 5 one ends have a fluid hole 24, and the other end has the entrance pressure pore 25 that contracts, there are two to three screwed holes at the back side, can be fixed on the empty indoor of drum surface with nut, multiple with the prismatic stainless steel substrates on the filtering surface of filter, the outside clads filter cloth again.Breather pipe 11 and fluid-through tube 12 insert contract pore 25 and go out filtrate hole 24 of entrance pressure respectively, and sealed attachment is summarized in central dispense 2.
As shown in Figure 8, central dispense 2, form shell by a central dispense head capsule body 27 and a central dispense capping 28, housing bottom has concentrates the liquid outlet 26 that aspirates the clear water that leaches, there is blowback gas port 36 in the outside, the shell nozzle end has the static friction sheet 31 and the movable friction plate 32 of a pair of contact disk sealing, the static friction sheet is fixedly mounted on the housing 27 interior disks by six screws, the movable friction plate thread connection is at central shaft 29 1 ends of central dispense head, and by six screw coaxial lines be fastened on a side of rotary drum 4.The O-ring plane of two friction plates relies on compression spring 34 to compress sealing, compression spring 34 is pressed in the middle of two spring bases 33 that are placed on the central shaft by nut 35, one single direction thrust ball bearing 30 is arranged between one spring base and housing, and central shaft can the run-in synchronism of transfer drum with movable friction plate like this.Movable friction plate and static friction sheet adopt stainless steel 1Cr18Ni9Ti and polytetrafluoroethylene (PTFE) manufacturing respectively.
Shown in Fig. 9,10, static friction sheet sealing surface has difference position air slot 39, intake chute, difference position blowback pore 40.A plurality of holes are arranged on the intake chute, and filtrate comes together in a central dispense liquid outlet 26 through this, the also porose logical ambient atmosphere of difference position air slot 39, and difference position blowback pore 40 is connected with a central dispense blowback pore 36.Blowback pore 37, vacuum drawing liquid hole 38 are arranged on the movable friction plate, and blowback pore 37 and vacuum drawing liquid hole 38 are inserted breather pipe 11 and fluid-through tube 12 respectively and are tightly connected.Vacuum drawing liquid hole on the movable friction plate overlaps with intake chute on the static friction sheet like this, so then the filter cake of the filter 5 that is connected of the vacuum drawing liquid hole of Chong Heing is empty indoor to filter cake vacuum draw drainage, drawing liquid hole and intake chute stagger then to aspirate and stop.The blowback pore 37 of movable friction plate repeats with static friction sheet difference position blowback pore 40, joining filter cake empty indoor through the filter cake of press filtration then blowback unload voluntarily, difference position air slot 39 on blowback pore 37 on the movable friction plate and the static friction sheet overlaps the empty chamber of the filter cake that then links to each other and ambient atmosphere and connects with the drawing liquid hole and set up pressure reduction, is convenient to aspirate.
Inlet seal 21 and exit seal 17 all adopt the polyammonium grease manufacturing with washing filter cake sealing 13 is the same, shown in Figure 11,12, there are many one side that self-styled sealing strip 41 under the pressure of one chamfering α is arranged on the sealing surface of circular arc, α is good with 25-40 degree leakage efficiency, and the chamfering direction of self-sealed article and rotary drum running are along direction.Because the sealing of import and export sealing device, rotary drum 4 is formed a descending slip press filtration space of sealing with housing 1 inwall.
The working condition of present embodiment is as follows:
1.471 * 10 5~5.884 * 10 5It is the I working region that the pressure slip of Pa is filled with in the filter press enrichment filtration zone from charging aperture in large quantities.Filtrate is by the filter cloth pore under the pressure charging, go out filtrate hole through filter plate and be summarized in the central dispense head, outside vavuum pump suction discharge machine, the higher filter cake of water capacity is along with the continuous running of rotary drum, enter II working region pressure (hydraulic) water filter wash cake and mechanical presses district, the filter cake that forms on the filter along with the rotation of rotary drum is subjected to pressure (hydraulic) water filter wash cake, makes that solution is further reclaimed or discharges in the filter cake.The washings of washing and slip are subjected to sealing device isolates, and makes the washing of washing leaching cake both can control the washing consumption, can reach again to contain the solution requirement in the washing leaching cake.After washing, because the filter press shell is an involute shape, filter cake is subjected to increasing mechanical presses, and filter cake continues dehydration, has formed the very low filter cake of moisture percentage like this.In extrusion process, some slip forms filter cake needs further washing, and secondary pressure (hydraulic) water cleaning device is installed on the housing top so.If the dehydration medium is general three wastes requirement is Separation of Solid and Liquid only, upper shell filter cake wash mill then can remove like this, with regard to structural representation as shown in Figure 2.
Through the filter cake after the extruding, then enter by the exit seal plate and to unload and i.e. III working region, cloth wash zone territory.Filter cake enters and unloads the filter cake outlet, and filter cake is 3.92 * 10 4~3.92 * 10 5Unload voluntarily under the blowback of Pa blowback air, filter cake unloads backwardness, and the empty chamber of filter cake enters filter cloth regeneration washing zone by division board on the housing, and filter cloth is subjected to 6.86 * 10 4~1.47 * * 10 5Enter the enrichment filtering area again by the inlet seal plate behind the spray washing of Pa pressure clear water, carry out the consecutive periods running.
Mechanical extruding type continuous filter press of the present invention is tested through materials such as electrolysis mud, disodium hydrogen phosphate residue, calcium carbide dirts, proves that adaptability is strong, and rate of cake moisture content is low, and filtration yield is big.Result of the test sees Table one.
Table one
Filter material title pulp density contains solid (%) bed drain purge (kg/h) feed pressure (Pa)
Disodium hydrogen phosphate residue 15 260 4.90 * 10 5
Calcium carbide dirty 12 210 1.67 * 10 5
Brass foundary washing dirt ash 8.2 240 1.37 * 10 5
Titanium dioxide three waste sludges 30 360 4.90 * 10 4
Active carbon 9 126 1.37 * 10 5
Electrolysis mud 3 3-10 1.94 * 10 5~3.92 * 10 5

Claims (4)

1, the continuous filter press that a kind of liquid-solid attitude is separated, comprise filter press housing (1), rotary drum (4), central dispense head (2), inlet seal (21), exit seal (17), filter cake water washing device (13), filter (5), the lattice circle (10) of the square crossing in length and breadth on the rotary drum periphery, the empty chamber (42) of filter cake, to slip through forced feed, vacuum draw, mechanical presses and solid-liquid dehydration separate, after being subjected to mechanical presses, the filter cake that forms in the empty chamber of filter cake unloads voluntarily in the compressed air blowback of discharging opening, feature of the present invention is: filter press inner walls and rotary drum cylindrical form descending involute gap, and the shape of importing and exporting sealing is the board-like sealing of circular arc, and the material of importing and exporting sealing is the wear-resisting rubber of oil resistant, the two ends of filter have a plurality of holes, and the central dispense head has the static friction sheet (31) and the movable friction plate (32) of a pair of contact disk sealing.
2, according to the described continuous filter press of claim 1, it is characterized in that: filter press inner walls reducing is the involute of falling the Archimedian screw.
3, according to the described continuous filter press of claim 1, it is characterized in that: one side the many self-styled sealing strips under pressure that a chamfering is arranged are arranged on the sealing surface of circular arc, chamfering direction and rotary drum running are along direction.
4, according to the described continuous filter press of claim 1, it is characterized in that: importing and exporting encapsulant is polyurethane rubber.
CN 87102662 1987-04-14 1987-04-14 Mechanical extruding type continuous filter press Expired - Lifetime CN1030434C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 87102662 CN1030434C (en) 1987-04-14 1987-04-14 Mechanical extruding type continuous filter press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 87102662 CN1030434C (en) 1987-04-14 1987-04-14 Mechanical extruding type continuous filter press

Publications (2)

Publication Number Publication Date
CN87102662A CN87102662A (en) 1988-01-13
CN1030434C true CN1030434C (en) 1995-12-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 87102662 Expired - Lifetime CN1030434C (en) 1987-04-14 1987-04-14 Mechanical extruding type continuous filter press

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
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CN101693155B (en) * 2009-10-14 2011-04-20 丹东东方机电工程有限公司 Micron or nano grade filter pressing device of dehydration slagging non-pressure vessel
CN101829449B (en) * 2010-05-18 2012-09-19 王光华 Rotary pressure filter
MX2017001043A (en) * 2014-07-25 2017-05-09 Bp Corp North America Inc Rotary pressure filter apparatus with reduced pressure fluctuations.
US10857490B2 (en) 2014-08-11 2020-12-08 Bp Corporation North America Inc. Separation process having improved capacity
CN104174203B (en) * 2014-09-04 2016-02-17 南阳鑫子源石油石化技术装备有限公司 Rotary drum pressure mud machine
CN105148588B (en) * 2015-09-25 2018-01-23 天津天美环保科技有限公司 A kind of small-sized bag filter
CN106823531A (en) * 2017-04-25 2017-06-13 苏州高精特专信息科技有限公司 A kind of inner-drum radiation-type vacuum continuous filter
CN107115710A (en) * 2017-07-24 2017-09-01 程慧骅 A kind of evolvent type rotary drum bias extruding filter press
CN113813660A (en) * 2021-09-30 2021-12-21 天津渤化永利化工股份有限公司 System and method for comprehensively treating ammonia II mud of combined alkali production device

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