CN100355481C - Belt type filter press - Google Patents
Belt type filter press Download PDFInfo
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- CN100355481C CN100355481C CNB2006100507789A CN200610050778A CN100355481C CN 100355481 C CN100355481 C CN 100355481C CN B2006100507789 A CNB2006100507789 A CN B2006100507789A CN 200610050778 A CN200610050778 A CN 200610050778A CN 100355481 C CN100355481 C CN 100355481C
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 97
- 239000010959 steel Substances 0.000 claims abstract description 97
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
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- Filtration Of Liquid (AREA)
Abstract
The present invention discloses a belt filter press for removing the water of micro-particle liquid containing materials, which is suitable for sewage treatment plants, paper mills, food processing plants, chemical plants, cultivation farms, etc. The belt filter press is mainly composed of a frame, a driving device, a feeding device, a pressing area and an auxiliary device, wherein the pressing area comprises pressing and filtering rollers and a filtering belt; the driving device comprises a motor and a gearbox; the auxiliary device comprises a tension roller, a scraper device, a water collecting device, a deviation correcting device and a filtering belt cleaning device. The present invention has the structural characteristics that the back surface of the filtering belt in the pressing area is lined with a steel rope pressurizing belt; the pressing and filtering rollers are in mutually tight arrangement. The present invention enhances the balance point of filtering pressure and filtration resistance by enhancing the filtering pressure intensity of the filter press and overcomes the defects existing in the prior art, and the present invention can be used for continuously dewatering the materials needing dewatering with high pressure intensity in a gradual pressurization mode. Thereby, the present invention greatly improves dewatering efficiency, pressing and filtering yield and solid contents of filter cakes at discharge ports of the filter press.
Description
Technical field
The present invention relates to a kind of separator, particularly a kind of microparticle that is suitable for sewage treatment plant, paper mill, food processing factory, chemical plant and plant or the like contains the belt filter press of liquid material dewatering.
Background technology
Water treatment plant, paper mill, food processing factory, chemical plant and plant etc. all will produce a large amount of materials that needs processed.These materials are through dehydration, after being concentrated again landfill can save a large amount of soils, reduce sewage permeation; Simultaneously, many materials in these materials are when being concentrated to certain solid content, just can be directly used in comprehensive utilization, thereby save the oven dry energy, pressed dry 50% when above such as the solid content of paper-making deinking mud, just not needing can realize the burning of postcombustion, its incineration residue can be used as the cement raw material of high-quality.
Existing belt filter press is very ripe as the leading equipment in the dewatering technology of mud process, and it is quite a few to relate to the improved innovation and creation of belt filter press.Chinese patent 02225112.x " a kind of belt filter press ", 94216369.9 " booster-type two filtering bands sludge dewatering equipment gradually ", 00261899.0 " a kind of improved belt filter press " and 87101602.8 " dewatering and equipment " etc. disclose by the structural design that changes belt filter press, have adopted the higher technical schemes such as dehydrating material of efficient to improve the performance of belt filter press.
Filter fundamental equation according to toll bar, and the practice of process test of many times draws: filtering under the certain situation of pressure, the dry solids wt that the filtrate of filtration unit volume is held back on filter medium and the relation of resistance of filter cake are determined, dry solids wt is heavy more, resistance of filter cake is just big more, just can't improve output again when filtering pressure after reaching theoretical equalization point with filtration resistance, perhaps continue filter operation raising filter cake solid content.Filtration resistance comprises resistance of filter cake and filter medium resistance.
The improvement that above-mentioned prior art is carried out has obtained certain effect, yet because all these improve the improvement of all carrying out under the condition of traditional, lower filtration pressure and discontinuous squeezing, can't improve the equalization point of filter pressure and filtration resistance, also can't avoid the resorption of filter cake to filtrate, therefore, not the improvement of essence, have limitation.For example: paper-making deinking mud carries out spontaneous combustion under the situation of dehydration at postcombustion not, its solid content will reach 50% at least, and the filtration pressure of paper industry mud belt filter press use at present is generally below 1.2Mpa, under this pressure, the outlet solid content of paper-making deinking mud is difficult to surpass 40%, can't directly fully utilize.
Summary of the invention
Technical problem to be solved by this invention is, overcome the defective that prior art exists, provide a kind of and filter the equalization point that pressure improves filter pressure and filtration resistance by improving filter press, can need carry out the High Voltages dehydration of continuous free of discontinuities, supercharging gradually by dehydrated material to various, thereby improve the belt filter press of the solid content of dewatering efficiency, press filtration output and filter press discharging opening dehydrated material greatly.
The present invention addresses the above problem the technical scheme that is adopted: this belt filter press, mainly by frame, drive unit, feed arrangement, pressed zone and servicing unit are formed, pressed zone comprises the press filtration roller, filter bag, drive unit comprises motor, gearbox, servicing unit comprises idler roller, doctor blade device, water container, deviation correcting device and filter bag cleaning device, pressed zone is contained on the frame, drive unit is connected with the press filtration roller, article two, filter bag surrounds outside the press filtration roller, feed arrangement is facing to filter bag, the filter bag cleaning device is installed facing to filter bag, doctor blade device is equipped with in two filter bag separation place of pressed zone, water container is contained in below the filter bag, and its design feature is: the filter bag back side of described pressed zone is lined with steel cable and adds pressure zone, and described press filtration roller is close to arrangement mutually.
Steel cable adds pressure zone can provide enough big tension force, filters pressure thereby can improve filter press significantly, and then improves the equalization point of filter pressure and filtration resistance, realizes the goal of the invention of dewatering efficiency, press filtration output and the filter cake solid content of raising filter press.The size of steel cable pressurization belt tension depends on the intensity and the arranging density of steel cable, according to the obtainable strength of materials in the market, steel cable adds the pressure zone limit tension can reach 1000～2000 kilograms per centimeter, working tension is 200～500 kilograms per centimeter, if running tension is 300 millimeters in 300 kilograms per centimeter, press filtration roller roller footpath, just can reach the above dewatering and filtering pressure of 2.0Mpa easily; And the limit tension intensity of the polyester webs that prior art is used only is 220 kilograms per centimeter, polyester webs is by permanent lengthening deformation more than 45% under this tension force, be limited to 100 kilograms per centimeter in the tension force operation, pony roll directly is designed to 200 millimeters, and its dehydration pressure has only 1.0MPa as calculated.Filter cake enters and all is lined with steel cable by two back sides and adds in the interlayer that the filter bag of pressure zone constitutes, and filter cake between the press filtration roller that is close to mutually by two filter bags and two steel cable pressurization strap clamps and walked, and carries out press dewatering.The press filtration roller is close to arrangement mutually and has farthest dwindled space between each nip, can realize pressurizeing continuously press dewatering, and it is wet to avoid filter cake to return.By adjusting the filter press speed of a motor vehicle, the quantity of press filtration roller, the diameter of press filtration roller, the cornerite of press filtration roller, can make the pressed zone continuous operating time of the dehydration pressure more than the 2.0Mpa that forms by steel cable pressurization belt tension be no less than for 10 seconds, this had both been avoided causing returning of filter cake wet, be beneficial to the raising of dehydration output and dewatering efficiency again, the solid content of filter press exit filter cake is greatly improved than prior art.
The filtration of the described pressed zone of belt filter press of the present invention has bound edge, and described servicing unit also comprises the flange device, and the flange device is contained in the both sides of filter bag.Before filter cake entered the pressed zone dehydration, a bound edge in upper and lower two filter bags rolled up under the effect of both sides flange device, has encased filter cake, entered after the pressed zone, and filter cake can be from not going back and forth between two places out among just being enclosed in two-layer filter bag completely.
The described steel cable of belt filter press of the present invention adds pressure zone and is worked out by steel cable, the steel cable gap that steel cable adds in the pressure zone is 0～4 millimeter, and the steel cable that is compiled into by steel cable adds pressure zone can bear that limit tension reaches 1000～2000 kilograms per centimeter, working tension is 200～500 kilograms per centimeter.It is unusual important parameters that steel cable adds in the pressure zone gap between the steel cable, and excesssive gap can not effectively pressurize, and the tension force that the footpath silk and the tram of filter bag are born all can increase, and then can shorten the service life of filter bag.Reasonably the steel cable gap is 0～4 millimeter, and when the steel cable gap was 0, filtrate was that the gap between screw by steel cable itself flows out, and this moment is the most favourable to the protection of filter bag, but filter medium resistance can corresponding increase, thereby has increased the difficulty of filtrate discharge.
Belt filter press steel cable of the present invention adds the pressure zone employing and with button shaped part steel cable parallel, arrangement arranged side by side is connected to each other the steel strip that forms.This kind steel cable pressurization belt surface is smooth, it is little to curve radius.
The described steel cable of belt filter press of the present invention adds pressure zone and adopts the track and column braiding steel strip.This kind steel cable adds pressure zone good integrity, firm.
The described steel cable of belt filter press of the present invention adds pressure zone and adopts the steel strip that steel cable parallel, arrangement arranged side by side is formed by connecting with lateral metal bar, and the lateral metal bar gap that steel cable adds in the pressure zone is 0～10 millimeter.This kind steel cable adds that pressure zone is sturdy and durable, globality might as well, steel cable is to pressurize to filter bag by lateral metal bar during use.
The described filter bag of belt filter press of the present invention adopts the double dewatering filter bag.It is nearer than single face draining apart from the two sides draining that liquid discharge in the filter cake is walked, and two sides dewatering speed is faster, output is higher, unit power consumption is lower.
The diameter of the described press filtration roller of belt filter press of the present invention successively decreases gradually along the filter bag direct of travel is descending, and pressure between the described press filtration roller and press filtration roll surface pressure coupling increase gradually along the filter bag direct of travel.Under the certain condition of steel cable pressurization belt tension, the roller footpath is more little, and pressure is just big more, so just can make filter cake further dehydration under the pressure that increases gradually.
Pressure in the described press filtration roller of belt filter press of the present invention between adjacent every pair of pressure roller all can be regulated.Adjustable in pressure between the every pair of pressure roller is complementary its pressure size and the pressure of front and back nip, avoids unexpected supercharging or step-down.
Described filter bag of belt filter press of the present invention and steel cable add pressure zone can distinguish configuration driven mechanism, also filter bag can be added on the pressure zone configuration one cover driving mechanism attached to steel cable.
The present invention compared with prior art has the following advantages: 1, filter the pressure height, dewatering efficiency is good.The present invention filters fundamental equation according to toll bar, add steel cable at the filter bag back side of belt filter press lining and add pressure zone, the enough big tension force that adds pressure zone and provide by steel cable improves the filtration pressure of belt filter press, thereby the equalization point of filter pressure and filtration resistance in the raising pressure-filtering process, can reach the purpose that improves filter-press dehydration output and dewatering efficiency to the various High Voltage dehydrations that need dehydrated material to carry out continuous free of discontinuities, supercharging gradually.Using lining to add the dewatering and filtering pressure that steel cable adds the filter bag of pressure zone can reach more than the 2.0Mpa, be much higher than the following filtration pressure of prior art belt filter press 1.2Mpa, the outlet solid content of the paper-making deinking mud of process belt filter press processed of the present invention can reach 50%.2, the press dewatering that pressurizes continuously, outlet filter cake solid content height.Press filtration roller of the present invention is close to arrangement mutually, make the pressed zone of the dehydration pressure more than the 2.0Mpa that forms by steel cable pressurization belt tension can move the above time in 10 seconds continuously, prior art filter press low-pressure, intermittent pressurized have been changed, filter cake is pressed situation about not doing, and the solid content of filter press exit filter cake is greatly improved than prior art.3, it is wet to have avoided filter cake to return.Belt filter press of the present invention has overcome prior art and has easily caused filter cake to return wet defective.On the one hand, steel cable adds pressure zone and formed an interlayer between filter bag and press filtration roller, can store the filtrate that temporarily can not discharge temporarily, waits to run to discharge in the lump behind the suitable position, and these filtrates can be by the filter cake resorption under the condition that filtration pressure does not reduce; On the other hand, the press filtration roller is close to the design of arrangement mutually, can make the space between each nip reduce to minimum, has avoided returning of filter cake wet.4, dewatering speed is fast.The present invention adopts two-sided trap drainage band, and the distance that the liquid discharge in the filter cake is walked is shorter than the single face draining of prior art, and two sides dewatering speed is faster, output is higher, unit power consumption is lower.In addition, the steel cable that belt filter press of the present invention uses adds pressure zone when effectively improving filtration pressure, prevents the effect that the filter cake endoparticle is put up a bridge in addition.The extruding that steel cable adds between pressure zone and the press filtration roller roll surface makes filter cake form the localized indentation convex, can shear filter cake, effectively prevents the bridging of filter cake endoparticle, promotes dehydration.5, solved the problem that filter press filter bag edge runs mud.The concavo-convex fixedly filter cake that is beneficial to that filter cake produced when the present invention adopted the steel cable pressurization prevents that filter cake is laterally mobile and cause the filter bag edge to run mud.6, the steel cable that uses of the present invention adds that the pressure zone mechanical strength is good, long service life, does not have the delamination problems of composite.
Description of drawings
Fig. 1 is the structural representation of belt filter press embodiment 1 of the present invention.
Fig. 2 is the structural representation of belt filter press embodiment 2 of the present invention.
Fig. 3 is the structural representation of belt filter press embodiment 3 of the present invention.
Fig. 4 is the enlarged diagram of adjacent two press filtration rollers among Fig. 1, Fig. 2, Fig. 3, and band is analysed and observe.
Fig. 5 is the following filter bag structural representation of the band bound edge of belt filter press embodiment of the present invention, and band is analysed and observe.
Fig. 6 enters enlarged diagram between the two-layer filter bag between pressed zone press filtration roller for belt filter press embodiment filter cake of the present invention, and band is analysed and observe.
Fig. 7 is the flange device structural representation of belt filter press embodiment of the present invention.
Fig. 8 is the right view of Fig. 7.
Fig. 9 is the vertical view of Fig. 7.
Figure 10 is the steel cable pressurization band structure schematic diagram 1 of belt filter press embodiment of the present invention.
Figure 11 is the A-A cutaway view of Figure 10.
Figure 12 is the B-B cutaway view of Figure 10.
Figure 13 is the steel cable pressurization band structure schematic diagram 2 of belt filter press embodiment of the present invention.
Figure 14 is the B-B cutaway view of Figure 13.
Figure 15 is the steel cable pressurization band structure schematic diagram 3 of belt filter press embodiment of the present invention.
Figure 16 is the C-C cutaway view of Figure 15.
Figure 17 is the B-B cutaway view of Figure 15.
The specific embodiment
Embodiment 1:
Referring to Fig. 1, the present embodiment belt filter press is provided with gravity and vibration drying zone 2, and this filter press mainly is made up of frame, drive unit, feed arrangement 1, gravity and vibration drying zone 2, pressed zone 3 and servicing unit idler roller, doctor blade device 4, water container, deviation correcting device 5, filter bag cleaning device 6.Drive unit comprises motor, gearbox.Gravity and vibration drying zone 2 are arranged between feed arrangement 1 and the pressed zone 3, doctor blade device 4 is equipped with in gravity and vibration drying zone 2 and pressed zone 3 junctions, doctor blade device 4 also is equipped with in two filter bag separation place of pressed zone 3, water container is contained in below gravity and vibration drying zone 2 and the filter bag, and feed arrangement 1, gravity and vibration drying zone 2 and pressed zone 3 are contained on the frame.
Filter bag in present embodiment gravity and the vibration drying zone 2 adopts independent filter bag.Gravity and vibration drying zone 2 involving vibrations rollers 21, material shaping roller 22, gravity and vibration drying zone driven roller 23, three lead filter bag roller 24, gravity and vibration drying zone filter bag 25.Pressed zone 3 comprise four pressed zone lead filter bag roller 31, go up filter bag idler roller 32, down filter bag idler roller 33, four press filtration rollers 34, two driven rollers 35, go up filter bag 36, go up that the filter bag steel cable adds pressure zone 37, the filter bag steel cable adds pressure zone 38, filter bag 39, filter bag flange device 40 and driving mechanism down down, steel cable pressurization belt material is at the back side of filter bag, and four press filtration rollers 34 are close to arrangement mutually, its diameter is descending successively decreases gradually.Doctor blade device 4 comprises material scraper 41, last filter bag material scraper 42, following filter bag material scraper 43.Deviation correcting device 5 comprises filter bag school sideslip roller 51, last filter bag school sideslip roller 52, following filter bag school sideslip roller 53.Filter bag cleaning device 6 comprises that filter bag cleans water pipe and shower nozzle 61, goes up filter bag cleaning water pipe and shower nozzle 62, following filter bag cleaning water pipe and shower nozzle 63.The embodiment filter bag can adopt filter screen or filter cloth.Gravity and vibration drying zone filter bag 25 surround gravity and vibration drying zone driven roller 23 and three and lead outside the filter bag roller 24, vibrating roller 21 and material shaping roller 22 are contained in the inside and outside two sides on gravity and vibration drying zone filter bag 25 tops respectively, material scraper 41 is contained between gravity and vibration drying zone 2 and the pressed zone 3, filter bag school sideslip roller 51 is contained in the bottom of gravity and vibration drying zone filter bag 25, and filter bag cleans water pipe and shower nozzle 61 faces toward gravity and vibration drying zone filter bag 25.Last filter bag steel cable adds pressure zone 37 linings at last filter bag 36 back sides, last filter bag 36 surrounds that two pressed zone are led filter bag roller 31, gone up filter bag idler roller 32, outside four press filtration rollers 34 and two driven rollers 35, last filter bag school sideslip roller 52 be contained in filter bag 36 tops below, last filter bag cleans water pipe and shower nozzle 62 faces toward last filter bag 36, and last filter bag material scraper 42 is contained in filter bag 36 separates the place with following filter bag 39 last filter bag 36 places.Following filter bag steel cable adds pressure zone 38 linings at following filter bag 39 back sides, and the both sides of following filter bag 39 have bound edge 391, and the embodiment bound edge adopts flexible material to make, referring to Fig. 5.The material of bound edge adopts flexible material, and processing and flange are all easy, also conveniently turn back cleaning, and press filtration roller radius of curvature also can do smaller.Following filter bag 39 surround two pressed zone lead filter bag roller 31, down outside filter bag idler roller 33, four press filtration rollers 34 and two driven rollers 35, following filter bag school sideslip roller 53 be contained in down filter bag 39 bottoms above, following filter bag cleans water pipe and shower nozzle 63 faces toward filter bag 39 down, following filter bag material scraper 43 is contained in filter bag 36 separates the place with following filter bag 39 following filter bag 39 places, and filter bag flange device 40 is contained in down the both sides of filter bag 39.The structure of filter bag flange device 40 and shape are referring to Fig. 7-9.
Embodiment pressed zone 3 filter bags and steel cable add pressure zone can distinguish configuration driven mechanism, also filter bag can be added on the pressure zone configuration one cover driving mechanism attached to steel cable.The embodiment filter bag adopts two-sided trap drainage band, filter bag can use ring-type/or the sheet two ends connect, can be whole circle also can be that slices cover steel cable and add on the pressure zone, leave enough laps in the junction; Equally, steel cable add pressure zone also can be ring-type/or the strip two ends connect, can be to twine/or monocycle and connecing.The embodiment steel cable adds pressure zone to be worked out by steel cable, and steel cable will select for use the steel cable that is compiled into to add pressure zone can bear that limit tension reaches 1000～2000 kilograms per centimeter, working tension is the steel cable of 200～500 kilograms per centimeter.The preparation method that embodiment adopts has three kinds, first kind shown in Figure 10-12, with button shaped part steel cable parallel, arrangement arranged side by side is connected to each other and forms steel cable and add pressure zone, button shaped part can be buckle or plastics button; Second kind shown in Figure 13-14, the steel cable track and column braiding is formed steel cable adds pressure zone; The third adopts lateral metal bar that steel cable parallel, the arrangement arranged side by side steel cable that is formed by connecting is added pressure zone shown in Figure 15-17.The steel cable gap that steel cable adds in the pressure zone is 0～4 millimeter.A among Figure 10-17, b, c, d, e, f, g, h, I, j are steel cable.Present embodiment adopts the stainless steel steel cable to add pressure zone.Four press filtration rollers 34 are 45～90 ° of oblique arrangement with level in the pressed zone 3, make things convenient for the draining of filter bag two sides.Pressure in the press filtration roller 34 between adjacent every pair of pressure roller all can be regulated, and its pressure size is complementary with the pressure of front and back nip, avoids unexpected supercharging or step-down.
This belt filter press operating process is as follows:
Feed arrangement 1 is solid content gravity and the vibration drying zone 2 that the material to be drained off of 3-5% is sent into filter press, under the vibration effect of material self gravitation to be drained off and vibrating roller 21, dewaters.The material water ratio to be drained off that enters gravity and vibration drying zone 2 is higher, can slough very most of moisture content under the effect of himself gravity and vibration; Material after gravity and the dehydration of vibration drying zone is trimmed to smooth material by material shaping roller 22, prepares for next step enters pressed zone 3 dehydrations.Material to be drained off is before entering the press filtration roller 34 of pressed zone 3, turn on automatic under the help of filter bag flange device 40 on the Soft Roll limit 391 on following filter bag 39 both sides, as shown in Figure 6, material 7 to be drained off is wrapped among upper and lower two filter bags 36,39, adds under the crunch of pressure zone material 7 to be drained off at steel cable like this and can not run out of from the filter bag both sides.Material to be drained off local area enter by in the interlayer that constitutes of filter bag 36 and 39 two filter bags of following filter bag, add under the sufficiently high press filtration pressure that produces under the powerful tension force that pressure zone provides at steel cable and to dewater, material 7 to be drained off between press filtration roller 34 and driven roller 35 by two filter bags and two steel cable pressurization strap clamps and is walked.Under the certain condition of steel cable pressurization belt tension, the roller footpath is more little, and press filtration pressure is just big more, and the diameter of press filtration roller 34 is descending to successively decrease gradually, so just make dehydrated material 7 under the condition that pressure increases gradually, further dewater, and then improve the mass dryness fraction of dehydrated material.The dehydration of dehydrated material 7 between the press filtration roller of pressed zone 3 be referring to Fig. 4, and arrow is represented the flow direction of the water deviate among the figure from dehydrated material 7.
Embodiment 2:
Referring to Fig. 2, for reducing the number of filter bag, reduce the replacing number of times of filter bag, the filter bag in the gravity of this belt filter press and the vibration drying zone 2 and the following filter bag 39 of pressed zone 3 lump together.Following filter bag 39 surrounds the vibrating roller 21, driven roller 23, idler roller 26 of gravity and vibration drying zone, two pressure and increases the district gradually and lead filter bag roller 31, down outside filter bag idler roller 33, two driven rollers 35 and the four press filtration rollers 34, lead filter bag roller 24 and be contained in filter bag outside between driven roller 23 and the idler roller 26.This embodiment is because the filter bag in gravity and the vibration drying zone 2 and the following filter bag 39 of pressed zone 3 lump together, and gravity and vibration drying zone 2 arrive pressed zone 3 without material scraper 41.Other structure of present embodiment and operational procedure are with embodiment 1.
Embodiment 3:
Referring to Fig. 3, the extended length of last filter bag 36 of this embodiment, the backhaul filter bag of last filter bag 36 that utilizes pressed zone 3 under the identical situation of dehydrating effect, has reduced input as gravity and vibration drying zone.The last filter bag 36 of this belt filter press surrounds two and goes up outside filter bag idler rollers 32, vibrating roller 21, two driven rollers 35 and the four press filtration rollers 34.The both sides of the last filter bag 36 of this embodiment have bound edge, and filter bag flange device 40 is contained in the both sides of filter bag 36.Entering before pressure increases district's press filtration roller 34 of 3 gradually, the Soft Roll limit on last filter bag 36 both sides, under the help of flange device 40, automatically downward flange is wrapped in dehydrated material between the upper and lower filter bag 36,39.Other structure of present embodiment and operational procedure are with embodiment 1.
What filter bag of the present invention back side lining added adds belt material through repeated tests, finds that adopting steel strip is optimal selection.If the MULTILAYER COMPOSITE adhesive tape that adopts inner liner metal silk, metallic cable or nylon, polyester material is as adding pressure zone, experiment shows, use the pressurization of this adhesive tape to have following defective: 1, this class MULTILAYER COMPOSITE adhesive tape comes unstuck in that alternating bending is in service easily, for avoiding coming unstuck, must amplify the radius of gyration of press filtration roller, and the bigger radius of gyration must cause less filtration pressure under the certain condition of tension force, and this certainly will influence the squeezing effect of filter press.2, the plane adhesive tape of inner liner metal silk etc. itself can not drainage, has determined that the pressor areas of filter press can only the single face dehydration, and single face dehydration resistance ratios double dewatering is big, and can cause returning of filter cake wet, is unfavorable for improving dewatering efficiency and output.3, between the press filtration roller not near, have the space between each nip, easily cause returning of filter cake wet, influence dehydration output and efficient.4, punching adhesive tape difficulty of processing is big, cost is high, and the intensity of adhesive tape is reduced, and also can produce degumming problem, causes service life to shorten.Facts have proved, adopt steel cable to add pressure zone and can effectively overcome above-mentioned defective, realize that the present invention filters pressure by improving filter press, improve the equalization point of squeeze and filter pressure and filtration resistance, to the various High Voltage dehydrations that need dehydrated material to carry out continuous free of discontinuities, supercharging gradually, create condition for the further dehydration of filter press, greatly improved the goal of the invention of filter press dewatering efficiency.
Some belt filter press is not provided with gravity and vibration drying zone, the setting that has be the gravity dehydration district, do not adopt vibration dehydration, only use gravity dehydration.These belt filter presses all are suitable for the present invention and add steel cable and add technical schemes such as pressure zone.
Claims (10)
1, a kind of belt filter press, mainly by frame, drive unit, feed arrangement, pressed zone and servicing unit are formed, pressed zone comprises the press filtration roller, filter bag, drive unit comprises motor, gearbox, servicing unit comprises idler roller, doctor blade device, water container, deviation correcting device and filter bag cleaning device, pressed zone is contained on the frame, drive unit is connected with the press filtration roller, article two, filter bag surrounds outside the press filtration roller, feed arrangement is facing to filter bag, the filter bag cleaning device is installed facing to filter bag, doctor blade device is equipped with in two filter bag separation place of pressed zone, water container is contained in below the filter bag, it is characterized in that: the filter bag back side of described pressed zone is lined with steel cable and adds pressure zone, and described press filtration roller is close to arrangement mutually.
2, belt filter press according to claim 1 is characterized in that: the filtration of described pressed zone has bound edge, and described servicing unit also comprises the flange device, and the flange device is contained in the both sides of filter bag.
3, belt filter press according to claim 2, it is characterized in that: described steel cable adds pressure zone and is worked out by steel cable, the steel cable gap that steel cable adds in the pressure zone is 0～4 millimeter, and the steel cable that is compiled into by steel cable adds pressure zone can bear that limit tension reaches 1000～2000 kilograms per centimeter, working tension is 200～500 kilograms per centimeter.
4, belt filter press according to claim 3 is characterized in that: described steel cable adds the pressure zone employing and with button shaped part steel cable parallel, arrangement arranged side by side is connected to each other the steel strip that forms.
5, belt filter press according to claim 3 is characterized in that: described steel cable adds pressure zone and adopts the track and column braiding steel strip.
6, belt filter press according to claim 3 is characterized in that: described steel cable adds pressure zone and adopts the steel strip that steel cable parallel, arrangement arranged side by side is formed by connecting with lateral metal bar, and the lateral metal bar gap that steel cable adds in the pressure zone is 0～10 millimeter.
7, according to claim 4 or 5 or 6 described belt filter presses, it is characterized in that: described filter bag adopts the double dewatering filter bag.
8, belt filter press according to claim 7, it is characterized in that: the diameter of described press filtration roller successively decreases gradually along the filter bag direct of travel is descending, and pressure between the described press filtration roller and press filtration roll surface pressure coupling increase gradually along the filter bag direct of travel.
9, belt filter press according to claim 8 is characterized in that: the pressure in the described press filtration roller between adjacent every pair of pressure roller all can be regulated.
10, belt filter press according to claim 9 is characterized in that: described filter bag and steel cable add pressure zone can distinguish configuration driven mechanism, also filter bag can be added on the pressure zone configuration one cover driving mechanism attached to steel cable.
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| CNB2006100507789A CN100355481C (en) | 2006-05-16 | 2006-05-16 | Belt type filter press |
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| CNB2006100507789A CN100355481C (en) | 2006-05-16 | 2006-05-16 | Belt type filter press |
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| CN1879932A CN1879932A (en) | 2006-12-20 |
| CN100355481C true CN100355481C (en) | 2007-12-19 |
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| CNB2006100507789A Active CN100355481C (en) | 2006-05-16 | 2006-05-16 | Belt type filter press |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9242191B2 (en) | 2011-12-13 | 2016-01-26 | Industrial Technology Research Institute | Filtration dehydration apparatus |
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| CN101376073B (en) * | 2008-10-09 | 2010-06-09 | 华章电气（桐乡）有限公司 | Lining band type filter press with press rolls for fixing mud |
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| CN110372170A (en) * | 2019-07-29 | 2019-10-25 | 中铁四局集团有限公司 | Filter press and filter pressing method |
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| CN116103512A (en) * | 2022-12-30 | 2023-05-12 | 耒阳市焱鑫有色金属有限公司 | Pretreatment method for acid radical elution of tin mud acid leaching decoppering water |
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| CN1879932A (en) | 2006-12-20 |
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