CN104623936A - Filtering elements for hydraulically squeezing and extruding out mud cake - Google Patents

Abstract

The invention relates to filtering elements. A set of filtering elements is clamped in a pressure bearing structure of a flexible pipe squeezing machine along the direction of squeezing force; the filtering elements are characterized in that at least one water-permeable plate is arranged in a filtering chamber; the front and rear surfaces of the water-permeable plate are water-permeable filtering surfaces; the water-permeable filtering surfaces of the water-permeable plate are vertical to the direction of squeezing force; the water-permeable plate is located in the filtering chamber at the upside of a lower flange; and each water-permeable plate comprises a plate type filtering medium, an upper locking plate pressure strip, an upper locking plate strip, a filtering cloth tightening strip, a filtering cloth tightening pressure strip and at least one filtrate cavity communication pipe mouth. The working principle of the filtering elements is as follows: the filtering chamber of a part of flexible filtering elements is filled with raw materials to be taken as pressurized filtering elements; the filled raw materials expand slowly by utilizing other filtering elements as pressure-applying filtering elements; the pressurized filtering elements filled with the raw materials are compressed by utilizing the expansion force, so that the raw materials are squeezed and dehydrated; the mud cake in the filtering chamber is extruded out by utilizing the expansion force; immediately, the filtering elements are converted into the pressure-applying filtering elements; and, by means of such a cycle, the dehydration process of the raw materials is completed.

Description

For fluid power squeezing and the filter element extruding discharging mud cake

Technical field

The present invention relates to squeezing for fluid power and extruding the filter element of discharging mud cake of the solid-liquid process of a kind of thickness and plasma, be specially adapted to the dehydration in pulping wastewater treatment, Treatment of Sludge, training of channel mud conditioning, hydrometallurgy wastewater treatment, coal washing waste water process and the process of livestock and poultry breeding industry pollutant.

Background technology

The filter element that the present invention proposes is that the employing fluid power that I proposes squeezes and extrudes the improvement of filter element of flexible tube presser of discharging mud cake or the general filter element as this kind of pressing device, improve a little, just can replace the plate-frame filtering element of traditional sheet frame squeezer, the barrier film sheet frame filter element of sheet frame diaphragm pressing machine can also be replaced.

In existing disclosed squeezing solid-liquid separation device of flexible pipe, such as, at " adopt fluid power to squeeze and extrude the flexible tube presser of discharging mud cake " number of patent application 2010102458340, upper known design scheme.

The flexible tube presser outside drawing of public technology is shown at Fig. 1-2, the operation principle that this invention proposes is: surround in a closed pressure-bearing frame in frame and be provided with a folded pliable and tough filter assemblies, filter chamber raw material being filled up wherein a part of pliable and tough filter element, as pressurized filter element, recycles the direction produced slowly along squeeze force as filter element filling raw material of exerting pressure to other and expands.The compression of this expansive force is utilized to be full of the pressurized filter element of raw material to realize the press dewatering of raw material, filter element of exerting pressure is subject to the actuator of squeeze force as pressurized filter element, what is called filter element of exerting pressure plays the effect of hydraulic system " hydraulic piston ", the effect that pressure-bearing frame plays " hydraulic cylinder ", the effect that raw material plays " hydraulic fluid ", the pumping installations of transferring raw material produces " high-pressure fluid "; The time of setting is kept at the filter pressure of setting, after completing dewatering work, open filter chamber residual cake valve row filter cake, the direction expansive force along squeeze force is now still utilized to be extruded by the mud cake in filter chamber, this filter element is intended changing into filter element of exerting pressure immediately, open and fill raw material and produce the filter element expanded along the direction of squeeze force and be filter element of exerting pressure, the filter element reaching the expanded thickness of setting changes into pressurized filter element; Change pressurized filter element into from filter element of exerting pressure changes filter element of exerting pressure to each filter element more by turns, and circulation like this endlessly completes the dehydration of raw material; The squeezing actuator of this equipment is exactly the filter element itself be under certain particular state; It is exactly filter chamber residual cake valve that the filter chamber of filter element opens and closes parts, and filter chamber residual cake valve adopts the shutoff valve of prior art.

The speed expanded that produces filter element depends on the content of moisture in speed, the viscosity of raw material solid content, the filtration resistance of raw material and the raw material of filling raw material, and the viscosity of raw material solid content has the ratio and characteristic that depend on various composition in raw material, the filtration resistance of raw material changes along with leaching of moisture, activated sludge raw material filtration resistance when moisture content 50% starts to become large, the viscosity of the activated sludge raw material of this moisture content is similar to normal hydraulic oil, relatively be suitable for adopting this know-why to dewater, if the viscosity of raw material and water close to and too low, present principles just can not be used to carry out material liquid defeat squeezing and reach dehydration object, obviously, the moisture content of raw material is high, so the viscosity of raw material and water just very close, because raw material has all become by filter cloth cleaner liquid, this raw material adopts this technology not to be just best selection, if in addition the viscosity of raw material and pitch close to and too high, raw material cannot reach the filter space of filter chamber uniformly owing to lacking mobility, thus can not realize thin bed filtration, defeats squeezing reach dehydration object so present principles can not be used to carry out material liquid.

The concrete scheme of this technology can be understood from my patent applied for data.

The technical scheme of filter element is proposed in " adopt fluid power to squeeze and extrude the flexible tube presser of discharging mud cake " number of patent application 2010102458340, utilizing raw material pumping installations using feedstock transportation to one as in the filter element of pressurized, wet mud as raw material under high pressure by the direction bulging of the filter chamber of screen pipe unit along squeeze force, adjacent porous disc produces substantially equal gap due to the effect of elastomeric pad, we wish that wet mud is clamp-oned in all gaps of opening along the direction of squeeze force, but due to two side portion of porous disc and the gap of screen pipe unit larger, this gap becomes the less wet mud material channel of resistance, wet mud is difficult to overcome larger resistance and is filled in the space of the slit between adjacent porous disc, also just make wet mud in the import of filter chamber and go out interruption-forming short circuit, if wet mud can not be uniform in filter area, then filtration mechanism is utilized to complete dehydration, this reduces greatly by making the dehydrating effect of filter element, also the initial stage of entering filter chamber at wet mud is difficult to meet filter chamber thickness and depth of parallelism requirement in addition, this also makes the dewatering efficiency of filter element greatly reduce.

In the flexible tube presser of published number of patent application 2010102458340, there is following problem: the structural design of porous disc is not too optimized, manufacture and install comparatively complicated.The wet mud raw material entered in the filter chamber of filter element can not all enter in the close clearance between adjacent porous disc, and carry out the work of thin layer press dewatering in the gap, after the wet mud of major part passes through from the thick passage of the porous disc left and right sides, the deslagging outlet being directly squeezed into lower flange has just been discharged by deslagging stop valve, and obviously these raw materials can not be dewatered all efficiently in filter element.In addition because the eliminating filtrate of porous disc is all discharged with a conduit after collecting water pot again, not easily observe the filtration situation of each porous disc in filter element, the discharge filtrate by polluting whole filter element if the filter cloth of one of them porous disc breaks, causes this filter element all to be stopped using.Raw material is long in the path of the filtering surface by porous disc in addition, and during charging, resistance is excessive.

If the technical scheme that can design a kind of filter element makes the structural design of porous disc more reasonable; Avoid the short-circuit conditions of wet mud; The filtration situation of each porous disc in filter chamber can be observed in time, if thus blocking can solve in time; And the distribution entrance of public runner as filter course of a wet mud is offered at the middle part of porous disc, wet mud can be made to be filled in the space of the slit of filter area between adjacent porous disc more uniformly; These will be all the effective ways improving filter element dewatering efficiency.

In existing disclosed information, we also do not find that there is the similar message squeezing and extrude the flexible tube presser of discharging mud cake at employing fluid power.

Summary of the invention

For above many disadvantages, the present invention proposes and solve in-problem technical scheme:

For fluid power squeezing and the filter element extruding discharging mud cake, along squeeze force direction, between the pressing plate and bearing plate of flexible tube presser, clamp such filter element, this filter element comprises upper flange, lower flange and screen pipe unit; Upper flange comprises hermetically-sealed construction and walking mechanism on material inlet, filter chamber, and the guide wheel of walking mechanism is arranged on the upper flange left and right sides, and guide wheel engages with the rack rail in flexible tube presser frame respectively; Lower flange comprises deslagging outlet, row's filtrate mouth of pipe and filter chamber lower seal structure thereof, deslagging outlet and row's filtrate mouth of pipe are communicated with extraneous deslagging and row's filtrate system respectively, filter chamber lower seal structure comprises lower flange main body, upper pressure flange dish and Annular elastomeric seals, upper pressure flange dish comprises arm, square type canalis spinalis and end ring flange, and upper arm, square type canalis spinalis and end ring flange are interconnected; Under the screen pipe unit of filter element is hung in upper flange, under lower flange is hung in screen pipe unit; The vertical axis of the oval profile of the level cross-sectionn of the screen pipe unit of all filter elements is all parallel to each other, this vertical axis and squeeze force direction perpendicular; Screen pipe unit comprises the following elements of radial flexibility: at least two-layer tubular filtering medium and connector, the tubular filtering medium level cross-sectionn of every layer be the vertical axis center line of oval profile overlap and and horizontal line; The tubular filtering medium inside of innermost layer forms filter chamber; Every layer of tubular filtering medium upper end and upper flange are connected by hermetically-sealed construction on filter chamber and seal, and the lower end of the tubular filtering medium together that is layering and filter chamber lower seal anatomical connectivity also can opening and closing filter chambers, and the lower end of tubular filtering medium is communicated with deslagging outlet; One end of material inlet on upper flange is communicated with for extraneous raw material system, and the material inlet other end is communicated with filter chamber; Outermost tubular filtering medium adopts rigid filaments braiding conveyer belt, rigid filaments braiding conveyer belt surrounds the overall structure of the pliable and tough vertical axial dimension fixed length of the radial direction of a tubulose, the rigid filaments braiding conveyer belt vertical upper axial end of tubulose is connected to the lower end of upper flange, and this rigid filaments braiding conveyer belt forms a series of sieve aperture; Rigid filaments braiding conveyer belt comprises muscles and bones and skeleton, and muscles and bones is that downward a series of of long axis wear bar, and skeleton is the spiral wire circle supporter around wearing bar; Every two adjacent skeletons and same wear bar and are hinged together, and rigid filaments braiding conveyer belt all are worn on bar or lower two ends and adjacent skeleton are fixed together; The upper end nut that bar is worn in a series of centre passing the plummet in frame center hole is fixedly connected with upper flange, and lower end nut is fixedly connected with lower flange;

Described filter element is in filter chamber, be provided with at least one porous disc, and the two sides, front and back of porous disc is permeable filtering surface, and the permeable filtering surface of porous disc is perpendicular to squeeze force direction, and porous disc is seated in the filter chamber on lower flange top; Each porous disc comprises at least two-layer tabular filter medium, bar tightened by upper lock plate press strip, lath of locking, filter cloth, filter cloth is tightened press strip and is communicated with the mouth of pipe with at least one filtrate chamber; Lath of locking is the rigidity horizontal stripe being located at porous disc upper level, and press strip tightened by filter cloth is the horizontal stripe being located at porous disc lower horizontal; The tabular filter medium of innermost layer is the filtrate chamber of the space formation pervious bed of the uniform rigidity in surperficial uniform gap and inside; The tabular filter medium upper end of innermost layer connects lath of locking, the lower end of the tabular filter medium of innermost layer connects after bar tightened by filter cloth and forms a porous disc core assembly, and one end that the filtrate chamber that space and the cleaner liquid of the tabular filter medium of innermost layer pass through is communicated with the mouth of pipe is communicated with; The filter cloth that the filtrate chamber connection mouth of pipe is arranged on the lowest part of porous disc core assembly is tightened on press strip, filtrate chamber is communicated with the cavity that the mouth of pipe is formed by the tabular filter medium that the through hole that filter cloth is tightened on bar is communicated with innermost layer, this filtrate chamber is communicated with the mouth of pipe by flexible pipe and on the pipe joint that is provided with of the sidewall connecting lower flange, pipe joint is communicated with row's filtrate mouth of pipe; Outermost tabular filter medium formed multiaspect solid type superscribes jam plate bar, bar tightened by filter cloth, each laminate shape filter medium and porous disc core assembly form porous disc main body, the upper surface of outermost tabular filter medium is pressed on the upper surface of lath of locking by upper lock plate press strip securing member; Filter cloth is tightened press strip securing member and the lower surface of outermost tabular filter medium is pressed on the lower surface that bar tightened by filter cloth; Front and back position limiting structure is provided with along the pressure-bearing surface in squeeze force direction at porous disc; The upper lock plate press strip of each porous disc utilizes hitch to be connected to below upper flange.

The eliminating filtrate of each porous disc is recommended to be discharged by independent pipe joint, directly can observe the filtration situation of each porous disc in filter element, the discharge filtrate by polluting whole filter element if the filter cloth of one of them porous disc breaks, stops using the porous disc of fault by blocking this pipeline.

That tubular filtering medium as the innermost layer of screen pipe unit adopts flexible braiding or the filter cloth of nonwoven, metal knitted filter screen or sintering filter membrane etc.Rigid filaments braiding conveyer belt as the outermost tubular filtering medium of screen pipe unit comprises muscles and bones and skeleton, muscles and bones is that downward a series of of long axis wear bar, every two adjacent skeletons and same muscles and bones are hinged together, all muscles and bones two ends and the adjacent skeleton of rigid filaments braiding conveyer belt are fixed together, muscles and bones upper end is connected to upper flange, any one in the skeleton spiral coil that is of rigid filaments braiding conveyer belt or closed-loop or side by side porous carrier bar, or their (spiral coils or closed-loop or carrier bar) is comprehensive.Skeleton is that spiral coil is assembled than being easier to muscles and bones, and skeleton is that after closed-loop and carrier bar and muscles and bones are assembled, gap is smaller.Filter cloth tighten bar be prevent filter cloth due to the impact of gravity in use progressively elongated, if the elongated rear tenesmus of filter cloth, the solid content in use probably appeared in the middle cleaner liquid be detained bottom the filter cloth of two sides forms hardening thing, the hardening thing of swelling may destroy filter cloth to be caused and cannot use, the tabular filter medium of this programme innermost layer, thin bed course be fixed on suspension lock on lath, gravity that bar and filter cloth tighten press strip tightens filter cloth to utilize filter cloth to tighten, ensure that filter cloth is in straight in its natural state, sediment inner under filter cloth often can be discharged.

As the further scheme of porous disc, described porous disc is shaped grooved porous disc, and shaped grooved porous disc is that groove is offered in the upper end in the middle of the tabular filter medium of rectangle; Lath of locking is divided into right three sections an of left side, neutralization; The upper surface of the left and right sides of the three ply board shape filter medium groove in porous disc is respectively equipped with two sections, the left and right of lath of locking, and the bottom end face of the three ply board shape filter medium groove in porous disc is respectively equipped with the stage casing of lath of locking; Locking between lath and upper lock plate press strip of two sections, left and right clamps with the upper surface of securing member by outermost tabular filter medium.This groove is the distribution entrance of public runner as filter course that a wet mud is offered at the middle part of porous disc, wet mud can be filled into more uniformly in the space of the slit of filter area between adjacent porous disc after can be made to enter filter chamber, the wet mud that public runner becomes the filter course of a folded porous disc on the one hand distributes entrance, wet mud can be made to be filled in the space of the slit of filter area between adjacent porous disc more uniformly, on the other hand when this public runner is when being full of the wet mud as pressure fluid, because the fluid resistance of public runner is less, the piston action that the expansion of pressure fluid produces makes the oval profile of the level cross-sectionn of the screen pipe unit of filter element accelerate to close to the circular speed changed gradually, the thrust that one folded porous disc bears reduces, what the slit be conducive between a folded porous disc was parallel to each other opens, the fore-and-aft direction of pliable and tough screen pipe unit is avoided to occur that top is thicker, the situation that bottom is thinner, wet mud can be made to be filled into as soon as possible in the space of the slit of filter area between adjacent porous disc.

The tabular filter medium of the innermost layer of porous disc can adopt the plastic cement diaphragm plate of the band guiding gutter of plate and frame filter press or the hexagon cellular plastic plate of market sale.As the further scheme of the tabular filter medium of the innermost layer of porous disc, the tabular filter medium of the innermost layer of porous disc is recommended to adopt rigid filaments braiding conveyer belt, rigid filaments braiding conveyer belt is the overall structure of the vertical axial dimension fixed length of a tabular, rigid filaments braiding conveyer belt comprises muscles and bones and skeleton, skeleton is spiral wire circle, muscles and bones is that downward a series of of long axis plummet wear bar, every two adjacent skeletons are hinged together by the centre bore of its spiral wire circle and same muscles and bones, at least one end and skeleton are fixed together all muscles and bones of rigid filaments braiding conveyer belt up and down, the upper end nut that bar is worn in a series of centre passing the plummet in frame center hole is fixedly connected with lath of locking, and the lower slide connection filter cloth that bar is worn in centre is tightened in the counterbore of bar lower surface, the lower end of all skeletons stretches into filter cloth downwards and tightens in the deep gouge of bar upper surface, and can relative sliding.Centre wear bar can Substitute For Partial same spiral wire circle centre bore in wear bar.Tighten bar and filter cloth by filter cloth and tighten press strip along the middle lower slide wearing bar, meet the requirement that utilize filter cloth to tighten gravity that bar and filter cloth tighten press strip tightens filter cloth, ensure that filter cloth is in straight in its natural state.This place rigid filaments braiding conveyer belt can adopt stainless steel material to make, and intensity is higher, and space is larger, corrosion-resistant and long service life, particularly can bear larger hot strength, for hanging, the mode used is favourable, and I recommends the tubular filtering medium of screen pipe unit also to adopt above-mentioned material.

As the further scheme of porous disc, described porous disc tightens at lock lath and filter cloth to arrange medium lock lath between bar, centre is worn in the through hole that bar is through on medium lock lath, medium lock lath is provided with plummet to lower through-hole, between the muscles and bones that medium lock lath is also clipped in the tabular filter medium of piece innermost layer and the tabular filter medium of lower piece of innermost layer and skeleton.Lower through-hole is in order to filtrate of circulating downwards.

As the further scheme of porous disc, before and after porous disc, the outermost tabular filter medium on two sides adopts flexible filter cloth, be net weaving near forward and backward filter cloth of flexibility and rigid filaments the middle tabular filter medium that between conveyer belt, at least liner one deck hole is less respectively, the aperture of net is 2 order to 70 orders, the upper dielectric that middle tabular is filtered rides over locks on lath, and the lower end of the net filter cloth that is slidably connected is tightened in the deep gouge of bar upper surface; Outermost tabular filter medium upper end securing member is located at upper lock plate press strip and locks between lath; Outermost tabular filter medium lower end securing member is located at filter cloth and tightens press strip and filter cloth is tightened between bar.Middle the tabular filter medium that liner compares the less net of rigid filaments braiding conveyer belt hole can increase the bearing capacity of filter cloth, the service life of prolongation filter cloth.Position limiting structure can ensure that the filter cake thickness in filter chamber is consistent, thus prevents filter cake moisture content inconsistent, and cushion is conducive to adjacent porous disc and keeps certain gap so that enter wet mud raw material in addition.

As the further scheme of porous disc main body, the front and back position limiting structure of described porous disc is that cushion is fixed in the side end face along squeeze force direction of tightening bar or medium lock lath at lath of locking, filter cloth, and another side of cushion contacts with outermost tabular filter medium; Cushion can be plastic washers or tower Compress Spring, the coated net of compressible end face that tower Compress Spring contacts with filter cloth.

As the further scheme of filter element, described filter element is in filter chamber, be provided with a folded porous disc along the direction of thrust, and wherein have the porous disc of a rectangle at least, all the other porous discs are shaped grooved porous disc; The porous disc of rectangle is clipped in the centre of shaped grooved porous disc.This programme is being folded in porous disc along one of squeeze force direction, by the porous disc of rectangle and fluting porous disc interval matched combined, be conducive to wet mud to be filled into more uniformly by groove after entering filter chamber in the space of the slit of filter area between adjacent porous disc, thus improve the dehydrating effect of filter element.

As the further scheme of filter element, described filter element is provided with at least one material channel being communicated with the middle part of filter chamber at upper flange, one end of the material channel at middle part assists feed pipe to be inserted in the groove of shaped grooved porous disc wherein by middle part, and middle part assists the outlet of feed pipe to be located at bottom groove.The other end of the material channel at the middle part of this programme is by the charging stop valve at middle part and the wet mud main Lu Binglian of charging, and wet mud main road connects raw material pumping installations.After wet mud enters filter chamber top from material channel, the stroke sensor on filter chamber top provides the signal that puts in place, and filter chamber bottom bulging stroke is still short of, now opens separately auxiliary charging stop valve, the filter chamber thickness and the depth of parallelism that reach setting are filled to local.Therefore this programme is also be conducive to wet mud to be filled into more uniformly by groove after entering filter chamber in the space of the slit of filter area between adjacent porous disc, thus improves the dehydrating effect of filter element.

As the further scheme of porous disc, described porous disc wears bar top in centre is provided with a spacing shoulder, limited shoulder decometer is in the groove of locking lath, centre wear bar through the through hole of lath of locking after clamp nut, with the fastening upper lock plate press strip of securing member and lock between lath and be provided with a backing plate, the lower surface of backing plate is provided with counterbore, and the nut of outstanding lath of locking is hidden by this counterbore, at backing plate with lock between lath and clamp filter cloth or filter cloth termination.

As the further scheme of porous disc, described porous disc is at least provided with two filtrate chambeies and is communicated with the mouth of pipe, a filtrate chamber connection mouth of pipe is wherein had to be communicated with the lower port of a tubule, tubule is arranged on the centre of the tabular filter medium of the innermost layer of porous disc, the upper port of tubule is arranged on the inside of tabular filter medium, and the other end that this filtrate chamber is communicated with the mouth of pipe is communicated with compressed air inlet port.If the upper port of tubule is arranged on the top of tabular filter medium, this filtrate chamber can be considered to be communicated with the passage of the mouth of pipe as injecting compressed air, object that is continuous or interval injecting compressed air is that filtrate is discharged from another filtrate chamber communicating pipe outspoken speed, and it is prevent dirt from blocking that the air outlet slit of the passage of injecting compressed air is arranged on top.

As the further scheme of porous disc, described filter element is on lower flange, be provided with at least one counter flange, counter flange utilizes securing member to be closely fixed on the sidewall of square type canalis spinalis of lower flange, the end face of counter flange is fixed with pipe joint, and one end of pipe joint is communicated with the mouth of pipe by flexible pipe with the filtrate chamber on porous disc and is communicated with.This programme considers to utilize counter flange to facilitate the installation of porous disc.

As the further scheme of porous disc, described porous disc is provided with sealing lath, sealing lath is located at filter cloth and tightens press strip and filter cloth is tightened between bar or is located at upper lock plate press strip and locks between lath, or is located at filter cloth and tightens press strip and filter cloth is tightened between bar and is located at upper lock plate press strip and locks between lath.Outermost tabular filter medium for two sides before and after square type porous disc adopts flexible filter cloth to be generally sewn into one end and closes, the pocket of open at one end, this pocket can entangle porous disc main body from above, then the upper surface of outermost tabular filter medium is pressed on the upper surface of lath of locking by upper lock plate press strip securing member; Filter cloth is tightened press strip securing member and the lower surface of outermost tabular filter medium is pressed on the lower surface that bar tightened by filter cloth; Securing member generally adopts holding screw.Filter cloth has pliability can direct press seal, but tightens between bar or be located at upper lock plate press strip and lock between lath be provided with sealing lath if tighten press strip and filter cloth at filter cloth, can reduce occur from the perforation surrounding of holding screw reveals possible; Can also reduce occur from filter cloth tighten that press strip to be communicated with the filtrate chamber that filter cloth is tightened bar that the perforation surrounding of the mouth of pipe reveals possible; Particularly can also reduce the possibility occurring to reveal from the fold closure of the pocket opened wide, even if this pocket can entangle porous disc main body from down be also like this, the upper surface of outermost tabular filter medium can be pressed on the upper surface of lath of locking by the fold closure of pocket with upper lock plate press strip securing member, can also tighten press strip securing member the lower surface of outermost tabular filter medium is pressed on the lower surface that bar tightened by filter cloth with filter cloth.Adopt flexible filter cloth to be generally sewn into the pocket opened wide of the uniform trousers shape of the mankind for fluting porous disc, this pocket can entangle porous disc main body from above.

As the further scheme of filter element, described filter element is parallel between the vertical side end face, two, left and right in squeeze force direction and the gap of screen pipe unit at porous disc to clamp an elastic sealing element respectively.This programme utilizes the wet mud of elastic sealing element stop to enter two vertical side end faces of porous disc and the gap of screen pipe unit, avoids the short-circuit conditions of wet mud.

Adopt the working procedure of the flexible tube presser of this filter element and " adopt fluid power to squeeze and extrude the flexible tube presser of discharging mud cake " patent No. 2010102458340, on technical scheme substantially identical:

The fed filtration of filter element: a folded filter element is arranged in the pressure-bearing frame of flexible tube presser frame, utilize raw material pumping installations will wet mud feedstock transportation to one as in pressurized filter element, wet mud raw material is under high pressure by the direction bulging of the filter chamber of screen pipe unit along squeeze force, the oval profile of the level cross-sectionn of screen pipe unit changes to close to circular gradually, adjacent porous disc produces substantially equal gap due to the effect of elastomeric pad, wet mud is clamp-oned in all gaps of opening, when the stroke sensor of any one monitoring point of filter chamber squeezing cake thickness testing agency send filling put in place time, charging stop valve is closed, if the displacement of monitoring point, bottom is still short of, the charging stop valve opening corresponding middle part utilizes wet mud to carry out local and fills, make the continuation of screen pipe unit bottom along the direction bulging of squeeze force, the charging stop valve that this filter element is all after meeting filter chamber thickness and depth of parallelism requirement is closed, this filter element transfers pressurized filter element to.

The filtration squeezing of filter element: the filter element again all the other a part of filter chambers being in the state of shriveling fills wet mud to its filter chamber successively as filter element of exerting pressure, the sensor detecting filter chamber pressure is set at filter element or pressure-bearing device, stop conveying carrying out pressurize when the pressure in filter chamber reaches first setting value, when pressure reduces, or the dwell time terminates to continue to fill wet mud to its filter chamber, when filter chamber squeezing cake thickness testing agency any one monitoring point send this filter element fill put in place time, charging stop valve is closed, if the displacement of monitoring point, left and right is not in place, opening corresponding auxiliary charging stop valve utilizes wet mud to fill, the charging stop valve that after meeting filter chamber thickness and depth of parallelism requirement, this filter element is all is closed, now this filter element is about to transfer pressurized filter element to, namely in this circulation, wet mud is not recharged, if pressurized filter element filter room pressure is inadequate in the pressure-bearing frame of frame, fill to other filter chamber as filter element of exerting pressure the expansive force that wet mud continues the direction bulging provided along squeeze force successively, all must ensure each filter chamber thickness as filter element of exerting pressure and depth of parallelism requirement in any process of once filling filter element.

Owing to exerting pressure, filter element and pressurized filter element are all in dewatering state at work, if raw material is very easy to dehydration, can consider temporarily the cleaner liquid control valve of the porous disc as filter element of exerting pressure to be closed, its function of exerting pressure outstanding, make major part cleaner liquid temporal persistence at the core of porous disc, slow down filter element of exerting pressure and become the speed of suppressing along the direction of squeeze force, ensure the squeezing time of pressurized filter element, transfer pressurized filter element at it and open associated valve, utilize the core cleaner liquid of compressed air Accelerating Removal porous disc; If raw material is not easy dehydration, immediately the cleaner liquid control valve of the porous disc of this filter element is opened after meeting filter chamber thickness and depth of parallelism requirement, transfer pressurized filter element to.

During squeezing pressurized filter element, the filter cloth that before and after the filter chamber of the anterior-posterior plane of the porous disc in the middle of screen pipe unit, a series of cushions of position limiting structure head on filter cloth coated with the inwall of filter chamber contacts, a series of cushions between every layer of porous disc head on filter cloth and contact with the coated filter cloth of adjacent porous disc, in the filter chamber of the screen pipe unit of filter element, raw material is filled in around each porous disc; Open after air shut-off valve, filtrate chamber is communicated with the mouth of pipe as injecting compressed air, and filtrate is accelerated through the filter cloth of screen pipe unit and the sieve aperture of all tubular filtering mediums, along the sieve aperture of tubular rigid silk braiding conveyer belt and muscles and bones axially conflux and under; Simultaneously filtrate is through the micropore of the filter cloth of porous disc, along the sieve aperture of tabular rigid filaments braiding conveyer belt and muscles and bones axially conflux and under, solid phase stays filter chamber; The compressed air lower than squeeze force can be pumped into, intermittently or continuously from the mouth of pipe import after cleaner liquid is wherein imported manifold trunk by porous disc core assembly with the compressed air of lower pressure and extrude from drainage duct and drainage duct mouth; Also can open vavuum pump, allow cleaner liquid enter filtering liquid bath.

When the expansive force along squeeze force direction bulging of filter element of exerting pressure the excircle of the screen pipe unit of the pressurized filter element be clamped between pressing plate and bearing plate is extruded more flat, the gap, front and back of filter indoor multilayer porous disc diminishes along with the compression of cushion simultaneously, thus the principle that chamber space is diminished completes Separation of Solid and Liquid; Although the filter chamber of filter element axially end can not shrivel by compacted assembly by the constraint of upper flange, but the filter pulp of the axial epimere of filter chamber is wherein also because the mobility of filter pulp obtains substantially identical with the filter pulp pressure in the axial stage casing of filter chamber, the comparatively wet filter pulp that axially end extruding has been deposited partly may be entered after the part filter residue pressurized in the axial stage casing of filter chamber, filtrate continues to discharge through the hole of whole tubular filtering medium and tabular filter medium, and filter residue is trapped in filter chamber.

The deslagging of filter element: after pressurized filter element under high pressure ensures enough dewatering times, open the deslagging stop valve of this pressurized filter element, continue to open filter element successively and provide squeeze force as filter element of exerting pressure, utilize filter element of exerting pressure that the filter Indoor Dry mud of this pressurized filter element is clamp-oned dry mud main road, close deslagging stop valve after getting rid of dry mud, this filter element changes into as the filter element of exerting pressure that sorts successively; Restart the next press dewatering work period.

Whole working procedure adopts PLC programme-control, can accomplish unmanned.Time larger for treatment scale, can by the filter element of some composition filter assemblies, each filter assemblies still performs the working procedure of above-mentioned filter element.

This equipment is applicable to the more mud of organic portion, and such as, mud general organic matter after over dry of sewage treatment plant accounts for about 50%, and this mud is fine and smooth especially, not containing hard branch.Filter chamber thickness due to this filter element can be zero, for not blocking filter cloth and the good filter cake of mobility, direct extrusion molding all can be utilized to discharge filter cake from the sealing lip of the slag-drip opening of screen pipe unit, do not walk the shake deslagging stage in the working procedure of sheet frame (barrier film) filter of aforementioned patent and prior art, this equipment control the similar market sale of filter chamber slag-drip opening rolling-type dewaterer go out port strobe, because this equipment filter area is many greatly, although the edge of filter chamber may remain a small amount of dehydrated sludge cake again after filter chamber discharging mud cake, but production efficiency still compares rolling-type dewaterer to be improved greatly, in filter chamber, residual a small amount of dehydrated sludge cake adopts regular cleaning method to remove.

Filter element of the present invention beneficial effect is compared with prior art:

1, the equipment for separating liquid from solid be made up of this filter element is without the running gear of complexity, and squeeze force is higher, failure rate is low;

2, adopt at screen pipe unit increase porous disc, even if filter area increases greatly, but sealing problem has well been avoided, and is applicable to thin layer press filtration, the moisture of filter cake is reduced greatly; Relatively plate and frame filter press and band filter are used for the energy consumption minimization of filter chamber sealing; Time for unloading filter cake compares sheet frame (barrier film) filter press much less, improves filter efficiency;

3, the manufacturing process of porous disc is simple, make efficiency improves and the cost of unit filter area reduces greatly, and equipment total cost reduces; The installation of porous disc, safeguards simple, changes consumable accessory filter cloth easy, change the filter cloth time short;

4, the filter cloth of filter element improves service life, and running cost reduces;

5, filter arrangements simplifies, thus the metal consumption of processed in units amount is reduced, and what be more conducive to that filter element does is very tall and big, thus realizes ultra-large processing scale production;

6, when filter cloth damages, only change single area, in some filter elements, break can temporary close for some porous discs, do not affect the use of whole squeezer, thus save the time, reduce the consumption of filter cloth, reuse after benefit can being glued for the not serious damaged filter cloth of blocking;

7, the squeezing converting filter element filter chamber Raw of power actuator role utilizing the stressed of filter element and exert pressure, squeeze force directly utilizes the pressure of pump in stock, feedstock pump pressurization pressure per ton is at 1Mpa, only need to consume 0.5-1Kw.h, the dry mud cake mud per ton being 60% by the wet mud dehydration of moisture content 80% needs consuming electric power 1-3Kw.h; And other high-pressure compressing machine, be that the dry mud cake squeezing consuming electric power of 80% just arrives 7-16Kw.h by the wet mud dehydration of moisture content 97%.Because this FU process energy consumption is near or below belt filter, running cost reduces greatly.

8, powerful extruding spoil disposal method is particularly suitable for follow-up direct supercharging pumping, and the conveying of omission conventional belt or shaftless screw are carried and energy consumption; Suitable continuous drying process needs the situation to mud cake extrusion material distributing machine, utilizes brute force extruding spoil disposal method and the supercharging pumping of flexible tube filter press, directly forms lath-shaped mud, omit the Special Equipment of extrusion material distributing machine.

9, operation easier reduces, can automated production.

Accompanying drawing explanation

Fig. 1 is the shaft side figure of the flexible tube presser of a kind of bearing structure of display of the present invention 7 filter elements;

Fig. 2 is the shaft side figure of the flexible tube presser of the another kind of bearing structure of display of the present invention 4 filter elements, and this filter element is provided with the material inlet F1 at two middle parts;

Fig. 3 is the shaft side figure of the filter element of flexible tube presser;

Fig. 4 is only presented at two porous discs 36 that filter element interior is provided with and hangs assembly shaft side figure;

Fig. 5 shows the positive view vertical with squeeze force direction of filter element in Fig. 4;

Fig. 6 is the E-E part sectioned view of the filter element of Fig. 5, does not show tubulose closing membrane 26;

The H-H sectional view of the screen pipe unit of Fig. 7 Fig. 6 filter element, shows tubulose closing membrane 26;

Fig. 8 shows the skeleton 54 of the spiral wire circle of the braiding of rigid filaments in Fig. 6 and 18 conveyer belt 42, muscles and bones and centre and wears bar 50a package assembly schematic diagram;

Fig. 9 is the B-B profile of Figure 10, shows filter cloth 48;

Figure 10 is the front view of display porous disc main body, does not show filter cloth 48;

Figure 11 is the A-A profile of porous disc 36 in Figure 10, does not show filter cloth 48;

Figure 12 is the partial enlarged drawing R of porous disc 36 in Fig. 9;

Figure 13 is Fig. 9 enlarged fragmentary cross section S;

Figure 14 is Fig. 9 enlarged fragmentary cross section T;

Figure 15 is the partial enlarged drawing W of porous disc 36 in Figure 11;

Figure 16 is Figure 11 enlarged fragmentary cross section X;

Figure 17 is Figure 11 enlarged fragmentary cross section Z;

The employing rigid filaments that Figure 18 only shows local weaves conveyer belt 42 as the innermost layer tabular filter medium of porous disc and the middle assembly drawing wearing bar 50, and skeleton 54 is spiral wire circle;

Figure 19 is the axonometric drawing of the porous disc core assembly part that Figure 10 shows, and does not show filter cloth 48 and lining net 51, omits spiral wire circle at some positions;

Figure 20 is the blast axonometric drawing of porous disc 36 in Figure 19;

Figure 21 is the axle side schematic diagram of tower Compress Spring 34b;

Figure 22 is the assembly axonometric drawing being provided with three shaped grooved porous discs in screen pipe unit, in porous disc, do not show filter cloth 48;

Figure 23 is the assembly axonometric drawing being provided with four shaped grooved porous discs and a square type porous disc in screen pipe unit, and square type porous disc is clipped in the middle of shaped grooved porous disc, in porous disc, do not show filter cloth 48;

Figure 24 be the assembly of porous disc in fig 23 basis on set up the material channel at middle part, do not show filter cloth 48;

Figure 25 only shows the enlarged fragmentary cross section Q that Fig. 5 hangs assembly;

Figure 26 shows in the assembly of 5 shaped grooved porous discs the material channel having set up middle part, does not show filter cloth 48;

Figure 27 is presented at the upper lock plate press strip 55 of two porous discs adjacent in 7 porous discs or filter cloth and tightens between press strip 57a and be provided with the position limiting structure that is slidably connected.

Wherein: 1-frame.1a-crossbeam, 1b-lower bearing bracket guide rail, the last bearing plate of 2-, 3-rack rail, the guide wheel of 4-filter element, bearing plate in the middle of 5-, 6-filter element, 6a-screen pipe unit, 7-pressing plate, 8-adjusting nut, 9-adjusting screw(rod), the suspension guide wheel of 10-pressing plate and bearing plate, 11-pedestal, 12a-is left, upper right stroke sensor, 12b-is left, bottom right stroke sensor, 13-limit spending frame and sensor stand, 14-filter chamber squeeze force direction, 15a, the upper and lower dynamic link of 15b-, 16-screw rod, 17-screw rod thrust and radial axle bearing, 18-jointed shaft, 19a, the upper and lower front rod of 19b-, 20-band andgudgeon spindle, 21a, the upper and lower back link of 21b-, 22-movable stand, 22a-power ear seat board, 23-nut, 24-moving frame, 25-counter flange, the tubulose closing membrane of 26-filter element, bendable tune during 26a-squeezing, inflexibility section during 26b-squeezing, the discharge opening of 27-tubulose closing membrane, 28-presses down ring flange, 28a-lower branch line, 29-tie-rod sealing cover, 30-upper flange main body, 30a-arm, 31-pull bar, 32-arm-tie, 33-connector, 34-cushion, 35-hangs bearing pin, 36-porous disc, the shaped grooved porous disc of 36a-, 37-filtrate chamber is communicated with the mouth of pipe, 37a-pipe joint, 37b-flexible pipe, 38-elastic sealing element, 39-seals lath, 40-upper lock plate filler strip, 41-medium lock lath, 41a-plummet is to lower through-hole, 42-rigid filaments braiding conveyer belt, 43-filter chamber, 43a-filter chamber top, 43b-filter chamber bottom, 44-lower flange main body, 44a-topmast pipe, 45-annular resilient seal member, the upper pressure flange dish of 46-, 46a-square type canalis spinalis, ring flange at the bottom of 46b-, the upper arm of 46c-, 47-securing member, 48-filter cloth, 48a-filter cloth termination, 49-nut, 50-wears bar, bar is worn in the middle of 50a-, 51-serves as a contrast net, 52-extruding row filter cake moving direction, the horizontal filtrate of 53-collects dish, 54-skeleton, 55-upper lock plate press strip, 56-locks lath, bar tightened by 57-filter cloth, press strip tightened by 57a-filter cloth, 58-tubule, auxiliary feed pipe in the middle part of 59-, the spacing shoulder of 60-, 61-blind plugging, the 62-pull bar shaft shoulder, 63-tie-rod sealing cover, 64-C type card, 65-counterbore, 66-screw rod, G1-material inlet, G2-deslagging exports, G3-arranges the filtrate mouth of pipe, G5-compressed air inlet port, material channel in the middle part of F1-.

Detailed description of the invention

Below in conjunction with accompanying drawing, filter element of the present invention is further described.

In Fig. 1 to 15,17 and 20, what show filter element of the present invention and be arranged on flexible tube presser state totally executes example 1.

7 filter elements are provided with in the flexible tube presser of Fig. 1.Flexible tube presser mainly comprises pumping installations, filter assemblies, pressure-bearing device, dry mud conveying device, filtrate discharge system, pipe-line system and control system, and comprehensively becomes electromechanical integration full-automatic Separation of Solid and Liquid integrated treatment complete set of equipments; Pressure-bearing device comprises compression assembly and bearing structure; Bearing structure comprises pressing plate 7, rack rail 3, frame 1 and bearing plate, and bearing plate comprises middle bearing plate and last bearing plate 2; Filter chamber squeeze force direction 14 is shown at Fig. 1, the screen pipe unit 6a of clamping four filter elements 6 between the pressing plate and last bearing plate of squeezer, frame utilizes crossbeam 1a, longeron 1b and rack rail 3 pressing plate 7 and last bearing plate 2 to be surrounded a closed pressure-bearing frame, and this frame installation is on basis 11.Filter assemblies comprises a folded filter element 6; Also can along the relative movement of arrangement fore-and-aft direction on the one folded filter element rack rail being arranged on frame arranged in parallel, arrangement fore-and-aft direction is also the squeeze force direction of pressure-bearing device; This filter element 6 comprises upper flange, lower flange and screen pipe unit 6a; Upper flange comprises hermetically-sealed construction and walking mechanism on material inlet, filter chamber, and the guide wheel 4 of walking mechanism is arranged on the upper flange left and right sides, and guide wheel engages with the rack rail in frame respectively; Along squeeze force direction, between the pressing plate and bearing plate of pressing device, clamp the flexible screen pipe unit of such one folded filter element; Lower flange comprises deslagging outlet G2 and filter chamber lower seal structure thereof; Under the screen pipe unit 6a of filter element is hung in upper flange, under lower flange is hung in screen pipe unit; The vertical axis of the oval profile of the level cross-sectionn of the screen pipe unit of all filter elements is all parallel to each other, this vertical axis and squeeze force direction perpendicular; Screen pipe unit comprises the following elements of radial flexibility: three layers of tubular filtering medium (abbreviation of tubular filtering medium) and connector, the tubular filtering medium level cross-sectionn of every layer be the vertical axis center line of oval profile overlap and and horizontal line; The tubular filtering medium inside of innermost layer forms filter chamber, and the tubular filtering medium of innermost layer is filter cloth 48, and between outermost tubular filtering medium 42 and the tubular filtering medium of innermost layer, liner 30 object stainless steel lining net 51 is as intermediate layer tubular filtering medium; Every layer of tubular filtering medium upper end and upper flange are connected by hermetically-sealed construction on filter chamber and seal, be layering the lower end of tubular filtering medium together and filter chamber lower seal anatomical connectivity can at the filter chamber 43 of squeeze force direction opening and closing, and the lower end of tubular filtering medium is communicated with deslagging outlet G2; On upper flange, material inlet is communicated with material inlet G1, and material inlet is communicated with filter chamber; Outermost tubular filtering medium adopts rigid filaments braiding conveyer belt 42, the filter chamber that rigid filaments braiding conveyer belt surrounds the pliable and tough vertical axial dimension fixed length of the radial direction of a tubulose erects the structure of wall, the rigid filaments braiding conveyer belt vertical upper axial end of tubulose is connected to the lower end of upper flange, and this rigid filaments braiding conveyer belt forms a series of sieve aperture; Rigid filaments braiding conveyer belt 42 comprises muscles and bones and skeleton 54, and muscles and bones is that downward a series of of long axis wear bar 50, and skeleton 54 is the supporter around wearing bar; Every two adjacent skeletons 38 are worn bar 50 be hinged together with same, and rigid filaments braiding conveyer belt all wear bar about 50 two ends and adjacent skeleton is fixed together; The upper end nut that bar 50a is worn in a series of centre passing the plummet in frame center hole is fixedly connected with upper flange, and the lower end nut that bar is worn in centre is fixedly connected with lower flange.

With reference to figure 3 ~ 8 and 18, rigid filaments braiding conveyer belt as the outermost tubular filtering medium of screen pipe unit comprises muscles and bones and skeleton, muscles and bones is that downward a series of of long axis wear bar 50, every two adjacent skeletons and same muscles and bones are hinged together, all muscles and bones two ends and the adjacent skeleton of rigid filaments braiding conveyer belt are fixed together, muscles and bones upper end is connected to upper flange, the spiral wire circle 54 that the skeleton that rigid filaments weaves conveyer belt is.

With reference to figure 5 to 6, on the filter chamber of upper flange, hermetically-sealed construction comprises upper flange main body 30, presses down ring flange 28, Annular elastomeric seals 45 and centre wear bar 50a; A series of centre is worn in the hole of bar respectively to the skeleton 54 of the rigid filaments braiding conveyer belt of the outermost tubular filtering medium of lower insertion, and the upper end that bar is worn in centre is fixed on the edge of the oval profiled orifice of level of upper flange main body 30; The lower surface pressing down ring flange is fixed on the upper surface of upper flange main body 30 and seals; Pressing down the lower branch line 28a that ring flange stretches out below is the conical pipe that mutual fit contacts with the arm 30a of upper flange main body 30, clamps filter cloth 48, stick annular resilient seal member 45 in filter cloth side between two conical pipes.

The filter chamber lower seal structure of lower flange comprises lower flange main body 44, upper pressure flange dish 46 and Annular elastomeric seals 45; A series of centre is worn bar 50a and is passed down through respectively in the hole of the skeleton 54 of the rigid filaments braiding conveyer belt of outermost tubular filtering medium 42, and the lower end that bar is worn in centre is fixed on the edge of the oval profiled orifice of level of lower flange main body 44; The upper surface of upper pressure flange dish 46 is fixed on the lower surface of lower flange main body and seals, the upper arm 46c that upper pressure flange dish stretches out above is the conical pipe that mutual fit contacts with the topmast pipe 44a of lower flange main body 44, filter cloth 48 is clamped between two conical pipes, annular resilient seal member 45 is sticked in filter cloth side, connect one section of square type canalis spinalis 46a below upper pressure flange dish, square type canalis spinalis lower end is an end ring flange 46b as deslagging outlet.

With reference to figure 3,5 to 7, can outer cladding tubulose closing membrane 26 at outermost tubular filtering medium, tubulose closing membrane Suspending fixation is upper flange main body 30 times, the mouth of pipe G6 into cleaning fluid is provided with in upper flange main body, the mouth of pipe is communicated with the ring-type filtering liquid chamber between outermost tubular filtering medium and tubulose closing membrane, be provided with horizontal filtrate in lower flange main body 44 and collect dish 53, filtrate is collected dish flow to row's filtrate system through tubular filtering medium, tubulose closing membrane bottom discharge opening 27, horizontal filtrate.

With reference to figure 3 to 21, be provided with two porous discs 36 in filter chamber, the two sides, front and back of porous disc is permeable filtering surface, and the permeable filtering surface of porous disc is perpendicular to squeeze force direction, and porous disc is seated in the filter chamber on lower flange top; Each porous disc comprises three ply board shape filter medium, bar 57 tightened by upper lock plate press strip 55, lath 56 of locking, filter cloth, filter cloth is tightened press strip 57a and is communicated with the mouth of pipe 37 with two filtrate chambeies; Lath of locking is the rigidity horizontal stripe being located at porous disc upper level, and press strip tightened by filter cloth is the horizontal stripe being located at porous disc lower horizontal; The tabular filter medium of innermost layer is the filtrate chamber of the space formation pervious bed of the uniform rigidity in surperficial uniform gap and inside; The tabular filter medium upper end of innermost layer connects lath of locking, the lower end of the tabular filter medium of innermost layer connects after bar tightened by filter cloth and forms a porous disc core assembly, and one end that the filtrate chamber that space and the cleaner liquid of the tabular filter medium of innermost layer pass through is communicated with the mouth of pipe 37 is communicated with; The filter cloth that the filtrate chamber connection mouth of pipe is arranged on the lowest part of porous disc core assembly is tightened on press strip, filtrate chamber is communicated with the cavity that the mouth of pipe is formed by the tabular filter medium that the through hole that filter cloth is tightened on bar is communicated with innermost layer, this filtrate chamber is communicated with the mouth of pipe by flexible pipe 37b and on the pipe joint 37a that is provided with of the sidewall connecting lower flange, pipe joint 37a is communicated with row's filtrate mouth of pipe G3; Outermost tabular filter medium formed multiaspect solid type superscribes jam plate bar, bar tightened by filter cloth, each laminate shape filter medium and porous disc core assembly form porous disc main body, the upper surface of outermost tabular filter medium is pressed on the upper surface of lath 56 of locking by upper lock plate press strip securing member 47; Filter cloth is tightened press strip securing member 47 and the lower surface of outermost tabular filter medium is pressed on the lower surface that bar 56 tightened by filter cloth; Front and back position limiting structure is provided with along the pressure-bearing surface in squeeze force direction at porous disc; The upper lock plate press strip of each porous disc utilizes hitch to be connected to below upper flange.Filter cloth is tightened bar and filter cloth and is tightened press strip and can adopt plastic material.

With reference to figure 4 and 21, squeeze force direction is born along porous disc, the front and back position limiting structure of described porous disc is that cushion 34 is fixed in the side end face along squeeze force direction 14 of tightening bar or medium lock lath at lath of locking, filter cloth, and another side of cushion contacts with outermost tabular filter medium; Cushion can be plastic washers 34a or tower Compress Spring 34b, the coated net 51 of the compressible end face that tower Compress Spring contacts with filter cloth.The center line that the cushion of the correspondence position often arranged often is arranged in every face of porous disc overlaps before and after squeezing direction; In figure 6, elastomeric pad is plastic washers 34a and tower Compress Spring 34b, the coated net 51 of the compressible end face that tower Compress Spring 34b contacts with filter cloth, tower Compress Spring another end face compressible and middle tabular filter medium 42a securing member 47 are fixed.

With reference to figure 8 to 20, the tabular filter medium of the innermost layer of porous disc adopts rigid filaments braiding conveyer belt 42, rigid filaments braiding conveyer belt 42 is overall structures of the vertical axial dimension fixed length of a tabular, rigid filaments braiding conveyer belt comprises muscles and bones and skeleton 54, skeleton is spiral wire circle, muscles and bones is that downward a series of of long axis plummet wear bar 50, every two adjacent skeletons 54 are hinged together by the centre bore of its spiral wire circle and same muscles and bones, and at least one end and skeleton are fixed together all muscles and bones of rigid filaments braiding conveyer belt up and down; The upper end nut that bar 50a is worn in a series of centre through frame center hole is fixedly connected with lath 56 of locking, and the lower slide connection filter cloth that bar is worn in centre is tightened in the counterbore of bar 57 lower surface; The lower end of all skeletons stretches into filter cloth downwards and tightens in the deep gouge of bar 57 upper surface, and can relative sliding.

With reference to figure 9,11,13 to 16, described porous disc tightens at lock lath 56 and filter cloth to arrange medium lock lath 41 between bar 57, centre is worn in the through hole that bar 50a is through on medium lock lath, medium lock lath is provided with plummet to lower through-hole 41a, between the muscles and bones that medium lock lath is also clipped in the tabular filter medium of piece innermost layer and the tabular filter medium of lower piece of innermost layer and skeleton 54.

With reference to figure 9,12 to 17, before and after porous disc, the outermost tabular filter medium on two sides adopts flexible filter cloth 48, be net 51 weaving near forward and backward filter cloth of flexibility and rigid filaments the middle tabular filter medium that between conveyer belt 42, at least liner one deck hole is less respectively, the aperture of net is 2 order to 70 orders, middle tabular filter medium top rides over locks on lath 56, and the lower end of the net filter cloth that is slidably connected is tightened in the deep gouge of bar 57 upper surface; Outermost tabular filter medium upper end securing member is located at upper lock plate press strip 55 and locks between lath; Outermost tabular filter medium lower end securing member is located at filter cloth and tightens press strip 57a and filter cloth is tightened between bar 57.

With reference to Figure 20, described porous disc is at least provided with two filtrate chambeies and is communicated with the mouth of pipe 37, the one end wherein having a filtrate chamber to be communicated with the mouth of pipe is communicated with the lower port of a tubule 58, tubule is arranged on the centre of the tabular filter medium of the innermost layer of porous disc, the upper port of tubule is arranged on the inside of tabular filter medium, and the other end that this filtrate chamber is communicated with the mouth of pipe is communicated with compressed air inlet port G5.

With reference to figure 3 and 5, described filter element is on lower flange, be provided with at least one counter flange 25, counter flange utilizes securing member 47 to be closely fixed on the sidewall of square type canalis spinalis 46a of lower flange, the end face of counter flange is fixed with pipe joint 37a, and one end of pipe joint is communicated with the mouth of pipe 37 by flexible pipe 37b with the filtrate chamber on porous disc and is communicated with.

With reference to Figure 20, described porous disc is provided with sealing lath 39, sealing lath is located at filter cloth and tightens press strip 57a and filter cloth is tightened between bar 57, or be located at upper lock plate press strip 55 and lock between lath 56, or be located at filter cloth and tighten press strip and filter cloth is tightened between bar and is located at upper lock plate press strip and locks between lath.

With reference to Figure 4 and 5, described filter element is parallel between the vertical side end face, two, left and right in squeeze force direction 14 and the gap of screen pipe unit at porous disc to clamp an elastic sealing element 38 respectively.

With reference to figure 1, the compression assembly of pressure-bearing device adopts adjusting screw retaining mechanism; Adjusting screw retaining mechanism comprises; Many rows multiple row adjusting screw that is symmetrical and that arrange up and down along squeeze force direction, often arrange, often arrange two adjusting screws 9 are at least set, often arrange, often arrange and at least arrange an adjusting screw 9, on each adjusting screw 9, the adjustable nut 8 of engagement is fixed on the crossbeam 1a of frame 1; Pressing plate 7 leans respectively on the front end face of the adjusting screw 9 of left-right situs, and is moved forward and backward on rack rail 3 by the guide wheel that the pressing plate left and right sides is provided with.

With reference to Figure 18, described suspension assembly 29 comprises pull bar 31, arm-tie 32, tie-rod sealing cover 63, C type card 64 and connector, pull bar 31 is through the through hole pressing down ring flange 28, C type card 64 level is inserted in the groove under the pull bar shaft shoulder 62 at pull bar 31 top, C type fastens the bottom at tie-rod sealing cover, tie-rod sealing cover is fixed on and presses down ring flange 28 upper surface, uses blind plugging 61 after installing pull bar by tie-rod sealing in tie-rod sealing cover, to prevent stoste from the hole leakage the filter chamber inner face of upper flange; Pull bar lower hinge hangs bearing pin 35, hangs hinge arm-tie 32, and arm-tie is by articulated joints 33, and connector 33 connects the upper lock plate press strip 55 of porous disc.

With reference to Figure 12 and 15, for the ease of installing, the top of wearing bar 50a in centre is provided with a spacing shoulder 60, limited shoulder decometer is in the groove of locking lath, centre wear bar through the through hole of lath of locking after clamp nut, at the upper lock plate press strip 55 fastening with securing member and lock between lath 56 and be provided with a backing plate 40, the lower surface of backing plate 40 is provided with counterbore, the nut of outstanding lath of locking is hidden by this counterbore, at backing plate with lock between lath and clamp filter cloth 48 or filter cloth termination 48a.

Referring to figs. 1 to 2, control system adopts filter chamber squeezing cake thickness testing agency, filter chamber squeezing cake thickness testing agency comprises middle bearing plate 5, hangs guide wheel 10, stroke sensor 12 and sensor stand 13, the middle bearing plate left and right sides is provided with suspension guide wheel, bearing plate in the middle of clamping between adjacent two screen pipe unit 6a, this guide wheel engages with the rack rail in frame respectively, and middle bearing plate can move back and forth along the squeezing direction of motion on rack rail; Be provided with sensor stand 13 in middle bearing plate both sides, utilize securing member 47 to be fixed on guide wheel 10 wall of middle bearing plate in one end of sensor stand 13, the other end that sensor stand cantilever stretches out installs stroke sensor 12.Sensor stand and limit spending frame adopt same support 13.

In Fig. 2 and 22, show of the present invention be provided with the flexible tube presser of the filter element of multilayer porous disc totally execute example 2.

The difference of the present embodiment and embodiment 1 is:

Four filter elements are provided with in the flexible tube presser of Fig. 2.

In fig. 22, show in filter element and be provided with three porous disc 36b.Described porous disc is shaped grooved porous disc 36a, and shaped grooved porous disc is that groove is offered in the upper end in the middle of the tabular filter medium of rectangle; Lath 56 of locking is divided into right three sections an of left side, neutralization; The upper surface of the left and right sides of the three ply board shape filter medium groove in porous disc is respectively equipped with two sections, the left and right of lath of locking, and the bottom end face of the three ply board shape filter medium groove in porous disc is respectively equipped with the stage casing of lath of locking; The upper surface of outermost tabular filter medium clamps with securing member 47 by locking between lath and upper lock plate press strip 55 of two sections, left and right.Shaped grooved porous disc is recommended the filter cloth 48 as outermost filter medium to be sewn into the same pocket of pant-like, crotch place suitably widens and mates with the stave lengths of locking in stage casing, in advance lock lath and the upper lock plate press strip in stage casing are fixed, again the uncovered of pocket is enclosed within porous disc assembly down, lock lath and the upper lock plate press strip that so just eliminate stage casing clamp filter cloth 48, decrease the possibility of the leakage of filter cloth simultaneously.

With reference to figure 2, the compression assembly of pressure-bearing device adopts connecting bar locking mechanism and coupling mechanism force generating mechanism; Connecting bar locking mechanism comprises upper and lower front rod 19a, 19b, upper and lower back link 21a, 21b, upper and lower dynamic link 15a, 15b, power ear seat board 22a, movable stand 22 and jointed shaft 18; One end of upper and lower front rod 19a, 19b of being symmetrically arranged along squeeze force direction by ear seat and pressing plate 7 hinged; One end of upper and lower back link 21a, 21b of being symmetrically arranged is hinged by ear seat 25 with upper and lower moving frame respectively, upper and lower moving frame leans respectively on the adjusting screw 9 of left-right situs, and can respectively rack rail 31b, on movable, often arrange, often arrange and at least arrange two adjusting screws 9, on each adjusting screw 9, the adjustable nut 8 of engagement is fixed on the crossbeam 1a of frame 1; The other end of upper and lower front rod 19a, 19b of being symmetrically arranged, the other end of upper and lower back link 21a, 21b be symmetrically arranged along squeeze force direction are hinged with same hinged major axis 20 with one end of upper and lower dynamic link 15a, 15b of being symmetrically arranged respectively; Hinged respectively with left and right power ear seat board 22a of the other end of upper and lower dynamic link 15a, 15b; The output shaft of coupling mechanism force generating mechanism is connected with screw rod 16 one end by shaft coupling, and screw rod at least one end arranges thrust and radial axle bearing 17; Two screw rods be parallel to each other 16 that coupling mechanism force generating mechanism drives are symmetricly set on the both sides of filter element 6 respectively, the nut 23 of the driving of engaging with screw rod 16 is connected on respective power ear seat board 22a, power ear seat board is arranged on movable stand 22 both sides, the guide wheel 4 at movable stand 22 two ends moves back and forth along the squeezing direction of motion on lower bearing bracket guide rail 1b, and lower bearing bracket guide rail 1b is fixed in frame 1; Between pressing plate 7 and last bearing plate 2, the screen pipe unit 6a of the folded filter element of clamping one, is provided with middle bearing plate 5 between the screen pipe unit of two filter elements; Last bearing plate 2 is fixed on frame 1 one end, and the guide wheel that pressing plate, middle bearing plate and a folded filter element are provided with respectively by the left and right sides moves back and forth along the squeezing direction of motion on rack rail; The nut that coupling mechanism force generating mechanism drives is ball nut, and the screw rod of driving is ball screw, and details can with reference to interrelated data.

In fig 23, what show filter element of the present invention totally executes example 3.

Described filter element is in filter chamber, be provided with a folded porous disc along the direction of thrust, and wherein have the porous disc 36 of a rectangle, all the other four porous discs are shaped grooved porous disc 36a; The porous disc of rectangle is clipped in the centre of shaped grooved porous disc.

In fig. 24, what show filter element of the present invention totally executes example 4.

The present embodiment is the improvement on the basis of embodiment 3.Described filter element is the material channel F1 being provided with the middle part of two connection filter chambers at upper flange, one end of the material channel at middle part assists feed pipe 59 to be inserted in respectively by the groove of the shaped grooved porous disc at the porous disc interval of rectangle by middle part, and middle part assists the outlet of feed pipe to be located at bottom groove.

In fig. 26, what show filter element of the present invention totally executes example 5.

The present embodiment is the improvement on the basis of embodiment 2.The present embodiment is be provided with 5 porous discs along the direction of thrust in filter chamber at described filter element; Be provided with the material channel F1 at the middle part of a connection filter chamber at upper flange, one end of the material channel at middle part assists feed pipe 59 to insert in the groove of shaped grooved porous disc respectively by middle part, and middle part assists the outlet of feed pipe to be located at bottom groove.

In figure 27, showing described filter element is tighten between press strip 57a at the upper lock plate press strip 55 of adjacent two porous discs or filter cloth to be provided with the position limiting structure that is slidably connected, the position limiting structure that is slidably connected comprises screw rod and locking nut, the both ends of screw rod are tightened at upper lock plate press strip 55 or filter cloth in the counterbore on press strip and are slided, and locking nut is fixed on the two ends of screw rod; If after porous disc compresses, the upper lock plate press strip 55 of other porous disc that locking nut is adjacent or press strip tightened by filter cloth and locking nut interferes, then need the hole being provided with suitable diameter.

Obviously, the relevant technologies feature in various embodiment can reasonably be exchanged within the scope of rights protection, combination and omission.

Claims (10)

1. one kind for fluid power squeezing with extrude the filter element of discharging mud cake, along squeeze force direction (14), in the bearing structure of flexible tube presser, clamp one group of filter element, this filter element (6) comprises upper flange, lower flange and screen pipe unit (6a); Upper flange comprises hermetically-sealed construction and walking mechanism on material inlet (G1), filter chamber, and the guide wheel (4) of walking mechanism is arranged on the upper flange left and right sides, and guide wheel engages with the rack rail in flexible tube presser frame respectively; Lower flange comprises deslagging outlet (G2), row's filtrate mouth of pipe (G3) and filter chamber lower seal structure thereof, deslagging outlet and row's filtrate mouth of pipe are communicated with extraneous deslagging and row's filtrate system respectively, filter chamber lower seal structure comprises lower flange main body (44), upper pressure flange dish (46) and Annular elastomeric seals (45), upper pressure flange dish (46) comprises arm (46c), square type canalis spinalis (46a) and end ring flange (46b), and upper arm, square type canalis spinalis and end ring flange are interconnected; Under the screen pipe unit (6a) of filter element is hung in upper flange, under lower flange is hung in screen pipe unit; The vertical axis of the oval profile of the level cross-sectionn of the screen pipe unit of all filter elements is all parallel to each other, this vertical axis and squeeze force direction (14) perpendicular; Screen pipe unit comprises the following elements of radial flexibility: at least two-layer tubular filtering medium and connector, the tubular filtering medium level cross-sectionn of every layer be the vertical axis center line of oval profile overlap and and horizontal line; The tubular filtering medium inside of innermost layer forms filter chamber; Every layer of tubular filtering medium upper end and upper flange are connected by hermetically-sealed construction on filter chamber and seal, be layering the lower end of tubular filtering medium together and filter chamber lower seal anatomical connectivity can opening and closing filter chamber (43), and the lower end of tubular filtering medium is communicated with deslagging outlet (G2); One end of material inlet (G1) on upper flange is communicated with for extraneous raw material system, and the material inlet other end is communicated with filter chamber; Outermost tubular filtering medium adopts rigid filaments braiding conveyer belt (42), rigid filaments braiding conveyer belt surrounds the overall structure of the pliable and tough vertical axial dimension fixed length of the radial direction of a tubulose, the rigid filaments braiding conveyer belt vertical upper axial end of tubulose is connected to the lower end of upper flange, and this rigid filaments braiding conveyer belt forms a series of sieve aperture; Rigid filaments braiding conveyer belt (42) comprises a series of muscles and bones and a series of skeleton (54), muscles and bones be long axis downward wear bar (50), skeleton (54) is for around the spiral wire circle supporter wearing bar; Every two adjacent skeletons (54) bar (50) of wearing through frame center hole is hinged together, and rigid filaments braiding conveyer belt all wear bar (50), and two ends and adjacent skeleton are fixed together up and down; The upper end nut that bar (50a) is worn in a series of centre passing the plummet in frame center hole is fixedly connected with upper flange, and the lower end nut that bar is worn in centre is fixedly connected with lower flange; It is characterized in that, described filter element is in filter chamber, be provided with at least one porous disc (36), the two sides, front and back of porous disc is permeable filtering surface, and the permeable filtering surface of porous disc is perpendicular to squeeze force direction, and porous disc is seated in the filter chamber on lower flange top; Each porous disc comprises at least two-layer tabular filter medium, bar (57) tightened by upper lock plate press strip (55), lath of locking (56), filter cloth, filter cloth is tightened press strip (57a) and is communicated with the mouth of pipe (37) with at least one filtrate chamber; Lath of locking is the rigidity horizontal stripe being located at porous disc upper level, and press strip tightened by filter cloth is the horizontal stripe being located at porous disc lower horizontal; The tabular filter medium of innermost layer is the filtrate chamber of the space formation pervious bed of the uniform rigidity in surperficial uniform gap and inside; The tabular filter medium upper end of innermost layer connects lath of locking, the lower end of the tabular filter medium of innermost layer connects after bar tightened by filter cloth and forms a porous disc core assembly, and one end that the filtrate chamber that space and the cleaner liquid of the tabular filter medium of innermost layer pass through is communicated with the mouth of pipe (37) is communicated with; The filter cloth that the filtrate chamber connection mouth of pipe is arranged on the lowest part of porous disc core assembly is tightened on press strip, filtrate chamber is communicated with the cavity that the mouth of pipe is formed by the tabular filter medium that the through hole that filter cloth is tightened on bar is communicated with innermost layer, this filtrate chamber is communicated with on the pipe joint (37a) that the mouth of pipe is provided with by flexible pipe (37b) the sidewall connecting lower flange, and pipe joint (37a) is communicated with row's filtrate mouth of pipe (G3); Outermost tabular filter medium formed multiaspect solid type superscribes jam plate bar, bar tightened by filter cloth, each laminate shape filter medium and porous disc core assembly form porous disc main body, the upper surface of outermost tabular filter medium is pressed on the upper surface of lath of locking (56) by upper lock plate press strip securing member (47); Filter cloth is tightened press strip securing member (47) and the lower surface of outermost tabular filter medium is pressed on the lower surface that bar (56) tightened by filter cloth; Front and back position limiting structure is provided with along the pressure-bearing surface in squeeze force direction at porous disc; The upper lock plate press strip of each porous disc utilizes hitch to be connected to below upper flange.

2. according to claim 1 for fluid power squeezing and the filter element extruding discharging mud cake, it is characterized in that, described porous disc is shaped grooved porous disc (36a), and shaped grooved porous disc is that groove is offered in the upper end in the middle of the tabular filter medium of rectangle; Lath (56) of locking is divided into right three sections an of left side, neutralization; The upper surface of the left and right sides of the three ply board shape filter medium groove in porous disc is respectively equipped with two sections, the left and right of lath of locking, and the bottom end face of the three ply board shape filter medium groove in porous disc is respectively equipped with the stage casing of lath of locking; The upper surface of outermost tabular filter medium clamps with securing member (47) by locking between lath and upper lock plate press strip (55) of two sections, left and right.

3. according to claim 1 and 2 for fluid power squeezing and the filter element extruding discharging mud cake, it is characterized in that, the tabular filter medium of the innermost layer of porous disc adopts rigid filaments braiding conveyer belt (42), rigid filaments braiding conveyer belt (42) is the overall structure of the vertical axial dimension fixed length of a tabular, rigid filaments braiding conveyer belt comprises muscles and bones and skeleton (54), skeleton is spiral wire circle, muscles and bones is that downward a series of of long axis plummet wear bar (50), every two adjacent skeletons (54) are hinged together by the centre bore of its spiral wire circle and same muscles and bones, at least one end and skeleton are fixed together all muscles and bones of rigid filaments braiding conveyer belt up and down, the upper end nut that bar (50a) is worn in a series of centre through frame center hole is fixedly connected with lath of locking (56), and the lower slide connection filter cloth that bar is worn in centre is tightened in the counterbore of bar (57) lower surface, the lower end of all skeletons stretches into filter cloth downwards and tightens in the deep gouge of bar (57) upper surface, and can relative sliding.

4. according to claim 3 for fluid power squeezing and the filter element extruding discharging mud cake, it is characterized in that, described porous disc tightens at lath of locking (56) and filter cloth to arrange medium lock lath (41) between bar (57), centre is worn bar (50a) and is through in the through hole on medium lock lath, medium lock lath is provided with plummet to lower through-hole (41a), and medium lock lath is also clipped between the muscles and bones of the tabular filter medium of piece innermost layer and the tabular filter medium of lower piece of innermost layer and skeleton (54).

5. according to claim 3 for fluid power squeezing and the filter element extruding discharging mud cake, it is characterized in that, before and after porous disc, the outermost tabular filter medium on two sides adopts flexible filter cloth (48), before near flexibility, filter cloth and rigid filaments weave the middle tabular filter medium that between conveyer belt (42), at least liner one deck hole is less respectively is below net (51), the aperture of net is 2 order to 70 orders, middle tabular filter medium top rides on lath of locking (56), the lower end of the net filter cloth that is slidably connected is tightened in the deep gouge of bar (57) upper surface, outermost tabular filter medium upper end securing member is located at upper lock plate press strip (55) and locks between lath, outermost tabular filter medium lower end securing member is located at filter cloth and tightens press strip (57a) and filter cloth is tightened between bar (57).

6. squeezing for fluid power and extruding the filter element of discharging mud cake according to claim 1 or 2 or 3, it is characterized in that, the front and back position limiting structure of described porous disc is that cushion (34) is fixed in the side end face along squeeze force direction (14) of tightening bar or medium lock lath at lath of locking, filter cloth, and another side of cushion contacts with outermost tabular filter medium; Cushion can be plastic washers (34a) or tower Compress Spring (34b), the coated net of compressible end face (51) that tower Compress Spring contacts with filter cloth.

7. according to claim 1 for fluid power squeezing and the filter element extruding discharging mud cake, it is characterized in that, described porous disc wears bar (50a) top in centre is provided with a spacing shoulder (60), square spacing shoulder utilizes side to be stuck in lock in the groove of lath, the upper surface of spacing shoulder and the plane contact of groove on lath of locking, centre wear bar be upward through the through hole of lath of locking after clamp nut, a backing plate (40) is provided with between the upper lock plate press strip (55) fastening with securing member and lath of locking (56), the lower surface of backing plate is provided with counterbore, the nut of outstanding lath of locking is hidden by this counterbore, at backing plate with lock between lath and clamp filter cloth (48) or filter cloth termination (48a).

8. according to claim 1 and 2 for fluid power squeezing and the filter element extruding discharging mud cake, it is characterized in that, described filter element is on lower flange, be provided with at least one counter flange (25), counter flange utilizes securing member (47) to be closely fixed on the sidewall of square type canalis spinalis (46a) of lower flange, the end face of counter flange is fixed with pipe joint (37a), and one end of pipe joint is communicated with the mouth of pipe (37) by flexible pipe (37b) with the filtrate chamber on porous disc and is communicated with.

9. according to claim 1 and 2 for fluid power squeezing and the filter element extruding discharging mud cake, it is characterized in that, described porous disc is provided with sealing lath (39), sealing lath is located at filter cloth and tightens press strip (57a) and filter cloth is tightened between bar (57), or is located between upper lock plate press strip (55) and lath of locking (56).

10. according to claim 1 and 2 for fluid power squeezing and the filter element extruding discharging mud cake, it is characterized in that, described filter element is parallel between the vertical side end face, two, left and right in squeeze force direction (14) and the gap of screen pipe unit at porous disc to clamp an elastic sealing element (38) respectively.