CN1066802A - Filter the method for mud and the filter of this method - Google Patents
Filter the method for mud and the filter of this method Download PDFInfo
- Publication number
- CN1066802A CN1066802A CN92101441A CN92101441A CN1066802A CN 1066802 A CN1066802 A CN 1066802A CN 92101441 A CN92101441 A CN 92101441A CN 92101441 A CN92101441 A CN 92101441A CN 1066802 A CN1066802 A CN 1066802A
- Authority
- CN
- China
- Prior art keywords
- filter
- mud
- container
- filtrate
- filter cake
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
- B01D33/13—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration with surface cells independently connected to pressure distributors
-
- 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
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
-
- 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
- B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
- B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
- B01D33/66—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by gases or by heating
- B01D33/663—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by gases or by heating by direct contact with a fluid
-
- 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
- B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
- B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
Abstract
The equipment that the present invention relates to filter the method for mud or analog and be suitable for implementing this method.Said method comprises: mud and Compressed Gas are delivered to filter interior and drained filtrate and formed filter cake from filter interior, and described method is to drain from the inboard of filter by the inside of mud and compressed air being sent into filtering container (1) and with filtrate and the solid that deposits on container inside to realize.
Description
The present invention relates to filter the method for mud or analog with the pressure filter of operation continuously, said filter comprises a rotary container, in the said method, mud and compressed air circuit are in accordance with regulations transported in the said filter, thereafter filtrate and the solid that is deposited on the vessel surface are discharged from filter.The invention still further relates to the equipment of implementing method of the present invention that is applicable to.
Filter is an industrial kind equipment in order to liquid is separated from solid, divides intermittently and two kinds of main types of continuous filter.
For batch filter, the mud that will filter that pumps into is through comprising the filter element such as filter, filter cylinder or similar component.In these elements, pressurized mud is passed filter media, make deposition of solid contained in the mud form filter cake in view of the above in this dielectric surface, liquid then passes filter element and flows to the filter outside, in the filter of many types, also will adopt as pressurization and be blown into way such as compressed air and further handle the filter cake that forms in the filter to make it to reduce moisture content.Open filter, put into second batch of mud again after therefrom drawing off filter cake with artificial or automated process.
Utilize this batch filter to handle mud, every batch generally needed with 5-15 minute, sometimes even reach a few hours.Mud is being higher than in this filter under the atmospheric pressure (general 5-15 crust gauge pressure) to be handled, so the formation of filter cake and the speed that is for further processing thereof are accelerated.
As desire after filtration immediately filter cake is carried out further processing as continuous processing technique, then need behind filter, be provided with a dashpot, with the intensive discharge of solid that in this groove, the periodic efflux of solids output that enters this groove is become stable state.
Continuous filter generally is designed to cydariform or dish type filter.The rotary drum of this type of filter or the surface coverage of dish have the filter medium that is generally textile fabric, and the surface of this rotary drum or dish contacts with mud.The inside of said rotary drum or dish is negative pressure, thisly both can make liquid contained in the mud pass said fabric to be fed to filtrate exit pipe, solid is then stayed on the said fabric surface, when filter cake rotates away from mud along with the rotation of drum or dish, vacuum also forces air to pass filter cake, and filter cake obtains drying.Filter cake is removed from the surface of drum or dish before can contacting mud once more.
The filter that only utilizes vacuum to improve filter effect is subjected to the restriction of the following fact, and the maximum in theory pressure differential maximum that the rate of filtration is had a direct impact of promptly passing fabric and filter cake both sides can reach atmospheric pressure.But in fact, said pressure differential almost always is lower than 0.9 crust.
In order to address this problem, developed the filter of several configurations in this area.The concrete practice is that traditional dish type or drum filter are changed into pressurizing vessel, and the gauge pressure that this pressurizing vessel generally reaches is the 1-6 crust, and the formation and the drying of filter cake all are improved.To cross cake by the air-lock (as the loader inlet valve of strap brake door or the water band valve of two consecutive operations) that is provided with and from pressurizing vessel, draw off, thereby avoid internal pressure from this container, to miss.
Except that above-mentioned shortcoming, its complex structure, maintenance difficult, this also is its drawback.
Because mud particles has the trend that is deposited to mud pit bottom, and near the mud on the upper strata of filter fiber so that the trend of clarification gradually to be arranged, filter efficiency will reduce like this, so dish type or drum filter must be effective to the mixing of mud.
An object of the present invention is to provide a kind of continuous Barrate type pressure filter of having eliminated above-mentioned all shortcomings.Characteristic according to filter of the present invention is described in the claims.
Filter according to the present invention includes the container that slowly rotates, and is coated with filter element on its inner surface.Such filter element forms with the filter screen as the covered fiber product.This filter screen helps filtrate to flow between the wall of scrim and pressurizing vessel.Like this, provided by the inventionly add essential pressurizing vessel in the continuous pressure filter that the flanging filter need not use known technology continuously; And just play a part pressurizing vessel according to rotary container of the present invention itself.
With said pressurizing vessel central axes, radial wall of its highly general and centre that filter screen equates is divided into the inner surface of said pressurizing vessel can make only mobile a plurality of intervals in the space that each interval limited of filtrate.
In each above-mentioned interval, be provided with an independent outlet, filtrate discharge arrived the outside of pressurizing vessel through this pipe.Each outlet pipe end is provided with switching valve, when going to a certain angle, avoids residual compression to miss in container thereby this pipe is in closed condition like this.
When filter moved, it highly was as 1/10 of this container diameter that the mud that desire is filtered is full of the pressurizing vessel to that rotates around its vertical central axis, and the overvoltage in the container at this moment forces mud to form filter cake on fabric.
When container rotated, formed filter cake left mud and upwards raises, and makes filtration cakes torrefaction thereby the Compressed Gas of container inside can pass filter cake.
During rotating continuously, when described filter cake reach filter cake remove the position (generally in the extreme higher position of horizontal vessel or on the rotation direction near the peak back but position before filter cake enters mud again) time, under the gauge pressure of said switching valve gauge pressure in a little higher than container Compressed Gas is delivered on the said filter element.Thereby force the filter cake on the filter element to drop on the carrier of discharging filter cake.Said carrier can be as belt or spiral carrier, and is local the filter cake that forms is delivered to an outer discharging of carrier by this carrier.
Reversal valve cuts out (cut-out) filtrate pipe of the filter element of filter cake exhaust position, thereby can prevent that pressure leakage in the container is outside container.
In case described filter element arrives mud surface following time again, switching valve is opened filtrate pipe, has begun next filtration cycle so again.
Utilize this way, filter of the present invention has been realized continuous operation, and operating pressure wherein can reach several atmospheric pressure, like this, for the continous vacuum filter, the formation of filter cake, dry and other processing have all improved manyfold.
Compare with the vacuum filter in being contained in pressure vessel, very simple because container proposed by the invention and filter is integrated according to its structure of embodiment of the present invention, thus can replace needs to traditional plate-like or drum type filter.The filter block that falls down from the filter cake carrier can not cause problem, because these filter cake pieces will drop under the mud.Do not need mud mixer according to structure of the present invention, because the mud particles of sending in the filter has the trend that is deposited to the mud layer bottom, so by contrast owing to saved mixing, filtering technique is improved, make the surface of the thickest mud, thereby improved the formation of filter cake near filter element.
With an embodiment and accompanying drawing the present invention is done more detailed explanation below.
Accompanying drawing 1 is the profile of filter of the present invention.
Accompanying drawing 2 is Fig. 1 filter profiles along the A-A face.
Accompanying drawing 3 is fragmentary detail view of Fig. 2.
Accompanying drawing 4 is the state diagrams when filtering according to filter of the present invention.
According to Fig. 1 of the present invention ... 3, the main element of pressure filter of the present invention is a rotating horizontal pressure force container (1).As shown in Figure 1, 2, its rotation realizes by a cover roller (2), or uses the bearing that adapts with its central shaft and this pressure vessel is rotated.Said inner surface of container is divided into a plurality of filter elements (3), these elements are to arrange with the central shaft parallel longitudinal that rotates, said filter element generally includes filter screen (4) and has coated filter fiber (5) on this filter screen (4), and filter screen (4) can comprise the supporting bracket (peg) (7) as making filtrate can pass the porous plate of fabric (6) and filtrate is flowed in the direction that is parallel to pressure vessel (1) wall.
Said filter element is that the midfeather (8) that is parallel to the central shaft of rotation is separated from each other.Said wall only can flow filtrate in the space of each filter element.
Each filter element (3) by filtrate pipe (9) with a switching valve (10) of the filtrate pipe of each transition element (3) (9) opening and closing is linked to each other when the assigned position.
The inside of rotation pressure container (1) is provided with banded carrier (11) as shown in the figure, and for the environment of its rotation, carrier is static, and its effect is the exhaust position that the filter cake that will form is transported to carrier.One end of carrier (11) can be fixed on the spring bearing (12), and the other end and discharge duct (13) are connected to inactive state.Pressure vessel (1) also links to each other with discharge duct (13) by packing ring (14).
Drainage conduit is provided with the discharging that both helps filter cake can prevent that also the pressure in the pressurizing vessel (1) is discharged to the air-lock (15) of this external container simultaneously.Air-lock (15) includes the feeder sleeve as the strap brake door, or as shown in Figure 1, two valves (16) of opening and closing is in succession arranged.
The mud that filters is sent in the filter through mud feeder sleeve (17), and Compressed Gas (being generally air) is then sent into through pipeline (18).
Referring to Fig. 4, illustrated with the kinetic energy of the following examples to filter of the present invention:
When filter moves, in filter, feed compressed air through pipeline (18) and make it to keep pressing (being generally 1-6 crust gauge pressure).The mud that filters (19) is sent in the filter through the mode of mud feeder sleeve (17) with Continuous Flow.
Switching valve (10) stays open A section filtrate exit pipe.The mud (19) that is deposited on container (1) bottom then begins to filter, promptly by in gravity and the container cross in the pressure handle mud contained liquid after filtration fiber (5) transport to filtrate output tube (9), through switching valve (10) it is transported to the filter outside from (9) again and enter filtrate discharge pipe (20), meanwhile, contained solid is gone up by closely knit formation filter cake (21) at filter fiber (5) in the mud.
Rotation along with container (1), the filter cake that forms in the said process (21) is during away from mud, compressed air in the container can pass filter cake through filtrate exit pipe (9) and switching valve (10) outside to container (1), makes filter cake (21) drying of formation simultaneously.When filtrate exit pipe (9) when the container rotation direction arrives at A section end, reversal valve (10) cuts out filtrate exit pipe.
When having served as filter cake (21) that filter element part (3) go up to form and having arrived the B section, under the pressure of a little higher than container (1), compressed air through independent air hose (22), switching valve (10) and a filtrate exit pipe (9) with an of short duration pulse backblowing filter element.Under the effect of pulse of compressed air, described filter element (3) is gone up the filter cake that forms and is dropped on the carrier (11) from element (3).Be provided with as guide plate (22) in the both sides of carrier (11), plate (22) can prevent that filter cake (21) from falling back again in the mud (19).
When the filter element (3) after disposing filter cake (21) advances to the C section, because the overvoltage in the container (1) is discharged to the filter outside by common filter fiber (5) easily, so reversal valve (10) cuts out its filter outlet pipe (9).
When filter element arrived the mud surface along with being rotated further of container (1), switching valve (10) was opened filtrate exit pipe (9) again, and like this, said filter element has begun a filtration cycle again.
For one skilled in the art, except above-mentioned embodiment, multiple different embodiment can also be arranged, can carry out multiple variation in scope of asking for protection of the present invention.As, can change into all or part of in the C section with supplying with compressed-air actuated scheme through pipeline (18) in the foregoing description.Supply with compressed air through switching valve (10) and filtrate exit pipe (9), compressed air fiber (5) inflow pressurizing vessel (1) after filtration like this, the solid particle that will adhere on the filter fiber is disposed simultaneously.In addition, separation place of filter cake (C section) needn't be positioned at the peak of pressurizing vessel, on the contrary, can forward the place more approaching with the mud surface ratio to along the container rotation direction, and the drying area of filter cake has increased like this.Said filter also can increase in the C section filter fiber is washed such processing step in the foregoing description, and the way of available high pressure water jets realizes washing.
Claims (6)
1, a kind of usefulness wherein is provided with the continuous pressure filter filtration mud of rotary container (1) or the method for analog, in said method, mud and compressed air are sent into filter, from this filter, remove the solid that filtrate and vessel surface deposit, it is characterized in that said mud and Compressed Gas input pod (1), drain the solid that filtrate and said inner surface of container deposit in the said container.
2, a kind of method according to claim 1 is characterized in that forming filter cake on the inner rim of rotary container (1) in the filtering area that is separated from each other (3), and said filter cake is separated with the surface of filtering area (3) under the overvoltage pulse effect.
3, a kind of method according to claim 1 or 2 is characterized in that preferably said mud being delivered to the bottom of rotary container (1), and the mud volume of sending into container (1) keeps constant substantially.
4, a kind of method according to above-mentioned arbitrary claim is characterized in that the pressure in the rotary container in whole filter process (1) keeps constant basically.
5, a kind of method according to claim 4 is characterized in that gauge pressure is generally 0.1～10 crust in the container (1), preferred 1-6 crust.
6, the pressurization continuous filter comprises following apparatus: rotary container (1), mud or analog and Compressed Gas are sent into the device (19 of said pressurization continuous filter, 18), be used for filtrate is delivered to the device (9) of said pressurization continuous filter outside, the filter cake that these (9) are used for that also said system is formed is discharged into carrier (11) and upward helps air-lock (15) that filter cake is delivered to said filter outside to relend from filtering area (3) surface, it is characterized in that said first covering device (17,18) configuration should make mud and compressed gas physical efficiency be sent to the inside of said container, and said second covering device (9,11) should be able to be from the inside discharging filtrate of container (1) and the solid of deposition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI910433 | 1991-01-29 | ||
| FI910433A FI87996C (en) | 1991-01-29 | 1991-01-29 | FOERFARANDET FOER FILTRERING AV SLAM ELLER DYLIGT AEMNE MED KONTINUERLIGTFUNKTIONERANDE TRYCKFILTER OCH EN FILTER FOER TILLAEMPNING AV FOERFARANDET |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1066802A true CN1066802A (en) | 1992-12-09 |
Family
ID=8531812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92101441A Pending CN1066802A (en) | 1991-01-29 | 1992-01-29 | Filter the method for mud and the filter of this method |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN1066802A (en) |
| AU (1) | AU1170492A (en) |
| FI (1) | FI87996C (en) |
| WO (1) | WO1992012783A1 (en) |
| ZA (1) | ZA92602B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101080263B (en) * | 2004-10-15 | 2011-06-08 | 特诺有限公司 | Improved method and device for concentrating a slurry |
| CN102716610A (en) * | 2012-06-27 | 2012-10-10 | 江苏赛德力制药机械制造有限公司 | Pressurization rotating drum filtering machine |
| CN107670392A (en) * | 2016-12-12 | 2018-02-09 | 青岛大学 | A kind of integrated belt press filtration piece-rate system of tuningout tensioning |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9139779B2 (en) | 2008-09-30 | 2015-09-22 | Japan Oil, Gas And Metals National Corporation | Catalyst separation system |
| US11135534B2 (en) | 2016-11-18 | 2021-10-05 | Andritz Ltd. | Modular shaft for disc filter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE605685C (en) * | 1931-06-24 | 1934-11-22 | Schuechtermann & Kremer Baum A | Rotary pressure filter |
| GB886939A (en) * | 1959-09-22 | 1962-01-10 | Davey Paxman And Company Ltd | Improvements in rotary filters |
| DE3625848A1 (en) * | 1986-07-30 | 1988-02-18 | Ruhrkohle Ag | Internal drum pressure filter for the very fine grain dewatering in mineral dressing |
-
1991
- 1991-01-29 FI FI910433A patent/FI87996C/en active
-
1992
- 1992-01-28 WO PCT/FI1992/000020 patent/WO1992012783A1/en active Application Filing
- 1992-01-28 AU AU11704/92A patent/AU1170492A/en not_active Abandoned
- 1992-01-29 ZA ZA92602A patent/ZA92602B/en unknown
- 1992-01-29 CN CN92101441A patent/CN1066802A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101080263B (en) * | 2004-10-15 | 2011-06-08 | 特诺有限公司 | Improved method and device for concentrating a slurry |
| CN102716610A (en) * | 2012-06-27 | 2012-10-10 | 江苏赛德力制药机械制造有限公司 | Pressurization rotating drum filtering machine |
| CN102716610B (en) * | 2012-06-27 | 2014-06-11 | 江苏赛德力制药机械制造有限公司 | Pressurization rotating drum filtering machine |
| CN107670392A (en) * | 2016-12-12 | 2018-02-09 | 青岛大学 | A kind of integrated belt press filtration piece-rate system of tuningout tensioning |
| CN107670392B (en) * | 2016-12-12 | 2019-10-18 | 宝应县有机食品质量监督检验中心 | A kind of belt filters pressing separation system that tuningout tensioning is integrated |
Also Published As
| Publication number | Publication date |
|---|---|
| FI910433A (en) | 1992-07-30 |
| WO1992012783A1 (en) | 1992-08-06 |
| FI87996B (en) | 1992-12-15 |
| ZA92602B (en) | 1992-12-30 |
| FI910433A0 (en) | 1991-01-29 |
| AU1170492A (en) | 1992-08-27 |
| FI87996C (en) | 1993-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR0121431B1 (en) | Filter press | |
| CA2970745C (en) | Rotary interstage screen apparatus | |
| US4284500A (en) | In-line pressurized wet screening apparatus | |
| US5657876A (en) | Abrasive grit material recovery system | |
| CN1126953A (en) | Method and apparatus for thickening lime mud with a disc filter | |
| CN1065409A (en) | The method and apparatus of thickening particle suspensisons | |
| US4156600A (en) | Particle separator and collector | |
| CN1066802A (en) | Filter the method for mud and the filter of this method | |
| CN2625014Y (en) | Double-grade filtration and separation appliance | |
| CN1030364A (en) | Fluidized granulator | |
| CN1113042C (en) | Rotary drum type dehydrator | |
| US3942842A (en) | Industrial vacuum loading apparatus | |
| CN1196687A (en) | Filtering device using flush washing | |
| CN1257001C (en) | Rotary filter with a blowback valve | |
| US4200530A (en) | Rotary filter | |
| CN210022510U (en) | High-speed centrifuge for separating various substances by using multi-filter-hole technology | |
| CN1038410A (en) | Radiation-type vacuum continuous filter using internal filtering in rotating drum | |
| US4925576A (en) | Continuous discharge centrifuge | |
| CN2568275Y (en) | Pyramis filtration cone type filtering pressure filter | |
| CN2293371Y (en) | Improved rotary continuous vacuum internal filtering filter | |
| CN110613980A (en) | Multi-stage disc type solid-liquid separation or dust removal machine | |
| JPH05103912A (en) | Filtering dehydrator | |
| US4925550A (en) | Batch-action apparatus for filtering fluid medium | |
| CN215232546U (en) | Rotary drum dehydrator | |
| CN220194219U (en) | Petroleum waste filtering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |