CN102343169A

CN102343169A - Flexible tube squeezer for hydraulically squeezing and extruding mud cakes

Info

Publication number: CN102343169A
Application number: CN2010102458340A
Authority: CN
Inventors: 张民良
Original assignee: TIANJIN ZHONGLISHI PURIFICATION SEPARATION TECHNOLOGY Co Ltd
Current assignee: TIANJIN ZHONGLISHI PURIFICATION SEPARATION TECHNOLOGY Co Ltd
Priority date: 2010-08-05
Filing date: 2010-08-05
Publication date: 2012-02-08
Anticipated expiration: 2030-08-05
Also published as: CN102343169B

Abstract

The invention relates to a flexible tube squeezer for hydraulically squeezing and extruding mud cakes. The squeezer mainly comprises a raw material pumping device, a filter assembly, a pressure bearing device, a dry mud conveying device, a filtrate discharge system, a pipeline system and a control system which are combined to form mechanical and electrical integrated full-automatic solid-liquid separation comprehensive treatment complete equipment. In an operating principle, a stack of flexible filter assemblies are arranged a closed pressure bearing frame enclosed by a machine frame; filter chambers, which are filled by raw materials, of part of flexible filter elements are used as stressed filter elements, and the raw materials are filled into other pressing filter elements to expand the filter elements slowly, so that the stressed filter elements filled with the raw materials are compressed by expansive force to squeeze and dehydrate the raw materials; set time is kept under set filter pressure; after the dehydration operation is finished, deslagging valves of the filter chambers are opened, the mud cakes in the filter chambers are extruded by utilizing the expansive force, and the filter elements are converted into the pressing filter elements immediately; and the raw materials are dehydrated by repeating the processes.

Description

Adopt fluid power to squeeze and extrude the pliable and tough pipe squeezer of spoil disposal cake

Technical field

The employing fluid power that the present invention relates to the solid-liquid processing of a kind of thickness and plasma squeezes and extrudes the pliable and tough pipe squeezer of spoil disposal cake, is specially adapted to paper waste processing, Treatment of Sludge, training of channel mud conditioning, hydrometallurgy wastewater treatment, coal washing waste water processing and livestock and poultry breeding industry Pollutant Treatment.

Background technology

In existing disclosed squeezing solid-liquid separation device of flexible pipe; For example in " toughness tube (pipe) type filtration machine " patent No. 200410077975.0; " squeezing solid-liquid separation device of flexible pipe " number of patent application 2009201586128; " fast squeezing solid-liquid separation device of flexible pipe " number of patent application 20091017966.0; Known many designs on " squeezing solid-liquid separation device of flexible pipe of fast and ultra-large processing scale " number of patent application 2009101329956

Existing disclosed pliable and tough pipe squeezer mainly comprises filter assemblies, compression system, dried mud conveying device, filtrating discharge system, pipe-line system, filter residue induction system and control system, and comprehensively becomes the full-automatic Separation of Solid and Liquid integrated treatment of electromechanical integration complete set of equipments; Dried mud conveying device involving vibrations and mechanical deslagging assembly; Filter assemblies comprises a folded filter element; One folded filter element is arranged in parallel on the rack rail that is arranged on frame and can relatively moves along arranging fore-and-aft direction, and arranging fore-and-aft direction also is the squeeze force direction of compression system; Compression system is that the short transverse at filter assemblies is provided with a cover at least and compresses assembly, and compressing assembly is to comprise compressing reinforcement linkage, pressing structure, rack rail, frame and thrust generating mechanism; Pressing structure comprises pressing plate and bearing plate, bearing plate and last bearing plate in the middle of bearing plate comprises; Along the squeeze force direction, the flexible screen pipe unit of clamping one folded filter element between pressing plate and the bearing plate, the screen pipe unit constitutes filter chamber, and the mechanism that compresses assembly of compression system is comparatively complicated, and manufacturing cost is higher; Filter chamber pressure-bearing keying modular construction is also comparatively complicated, and manufacturing cost is higher.

Summary of the invention

To solve the above shortcomings, the present invention provides a technical solution to solve the existing problems; present invention provides a working principle is: the frame surrounded by a closed frame with a stack of flexible pressure filter assembly, fill the part of the raw material flexible filter element as the filter chamber pressure filter element, and then use a pressure filter element to other filling materials generated slow expansion, use of the expansion force of the compression pressure has been filled with raw materials of the filter element to achieve dewatering, the The filtration pressure setting to keep the set time after the completion of dehydration work, exhaust valve open slag cake filter chamber, the expansion force at this time still using the filtered cake out of the room, then into the filter element to be applied Pressure filter element; reaches the expansion of the thickness of the filter element into the filter element under pressure, is filling material to produce expansion pressure filter element filter element; turns each filter element into the filter element from the pressure filter element pressure reconverted pressure filter elements, and so on incessantly complete dehydration of raw materials; filter element filter chamber pressure hoist components using existing technologies cutoff valves.

Pliable and tough pipe squeezer mainly comprises raw material pumping installations, filter assemblies, pressure-bearing device, dried mud conveying device, filtrating discharge system, pipe-line system and control system, and comprehensively becomes the full-automatic Separation of Solid and Liquid integrated treatment of electromechanical integration complete set of equipments; Pressure-bearing device comprises and compresses assembly and bearing structure; Bearing structure comprises pressing plate, rack rail, frame and bearing plate; The screen pipe unit of clamping one folded filter element between the pressing plate of squeezer and last bearing plate, frame utilize crossbeam, longeron and rack rail that pressing plate and last bearing plate are surrounded the pressure-bearing framework of a sealing, and this framework is installed on the basis.Filter assemblies comprises a folded filter element; One folded filter element is arranged in parallel on the rack rail that is arranged on frame and can relatively moves along arranging fore-and-aft direction, and arranging fore-and-aft direction also is the squeeze force direction of pressure-bearing device; This filter element comprises upper flange, lower flange and screen pipe unit; Upper flange comprises hermetically-sealed construction and walking mechanism on material inlet, the filter chamber, and the guide wheel of walking mechanism is arranged on the upper flange left and right sides, guide wheel respectively with frame on rack rail engagement; Along the squeeze force direction, the flexible screen pipe unit of clamping such one folded filter element between the pressing plate of pressing device and bearing plate; Lower flange comprises deslagging outlet and filter chamber lower seal structure thereof; The screen pipe unit of filter element is hung under the upper flange, and lower flange is hung under the screen pipe unit; The vertical axis of the oval profile of the level cross-sectionn of the screen pipe unit of all filter elements all is parallel to each other, and this vertical axis and squeeze force direction are perpendicular; The screen pipe unit comprises the following elements of radial flexibility: two-layer at least tubulose filtering medium (abbreviation of tubular filtering medium) and connector, every layer tubulose filtering medium level cross-sectionn are that the vertical axis center line of oval profile overlaps and vertical with horizontal line; The inner filter chamber that forms of the tubulose filtering medium of innermost layer; Every layer of tubulose filtering medium upper end is connected through hermetically-sealed construction on the filter chamber with upper flange and seals, and the lower end of the tubulose filtering medium together that is layering is connected with filter chamber lower seal structure also can open and close filter chamber, and the lower end connection deslagging of tubulose filtering medium exports; Material inlet is communicated with the stoste passage on the upper flange, and the stoste passage is communicated with filter chamber; Outermost tubulose filtering medium adopts rigid filaments braiding conveyer belt; Rigid filaments braiding conveyer belt surrounds the structure of the perpendicular wall of filter chamber of the radially pliable and tough vertical axial dimension fixed length of a tubulose; The rigid filaments braiding conveyer belt vertical upper axial end of tubulose is connected the lower end of upper flange, and this rigid filaments braiding conveyer belt forms a series of sieve apertures; Rigid filaments braiding conveyer belt comprises muscles and bones and skeleton, and muscles and bones is the downward a series of bars of wearing of long axis, and skeleton is around the supporter of wearing bar; Per two adjacent skeletons and same wear bar and are hinged together, and all of rigid filaments braiding conveyer belt are worn bar, and two ends and adjacent skeletal fixation be together up and down; Pipe-line system be the stoste import that is provided with of the upper flange at each filter element through charging stop valve and wet mud main Lu Binglian, wet mud main road connects the raw material pumping installations; The deslagging outlet that is provided with at the lower flange of each filter element is through deslagging stop valve and dried mud main Lu Binglian, and dried mud main road connects dried mud conveying device; The mouth of pipe that is provided with at the lower flange of each filter element also connects cleaner liquid and discharges the main road.

Adopt filter cloth flexible braiding or nonwoven, metal knitted filter screen or sintering filter membrane or the like as the tubulose filtering medium of innermost layer, screen pipe unit.Adopt the conveyer belt net of flexible taenidium braiding or conveyer belt net of cover fishplate bar or the like as outermost tubulose filtering medium.Long Circle is made in the screen pipe unit, but the constant squeezing of filter area stroke is shorter, and efficient improves, and has saved the cost of device.

Rigid filaments braiding conveyer belt as the outermost tubulose filtering medium in screen pipe unit comprises muscles and bones and skeleton; Muscles and bones is the downward a series of bars of wearing of long axis; Per two adjacent skeletons and same muscles and bones are hinged together; All muscles and bones two ends of rigid filaments braiding conveyer belt and adjacent skeletal fixation are together; The muscles and bones upper end is connected upper flange; Spiral coil that the skeleton of rigid filaments braiding conveyer belt is or closed-loop or any in the porous carrier bar side by side, or their (spiral coil or closed-loop or carrier bars) is comprehensive.Skeleton is that spiral coil is assembled than is easier to muscles and bones, and skeleton is that the slit is smaller after closed-loop and carrier bar and the muscles and bones assembling.

Hermetically-sealed construction comprises the upper flange main body, presses down ring flange on the filter chamber of upper flange, cyclic spring seal and centre wear bar; A series of centres are worn bar and are inserted respectively downwards in the hole of skeleton of rigid filaments braiding conveyer belt of outermost tubulose filtering medium, and the upper end of wearing bar is fixed on the edge of the oval profiled orifice of level of upper flange main body; The lower surface that presses down ring flange is fixed on the upper surface and the sealing of upper flange main body; Pressing down the lower branch line that stretches out below the ring flange and the lower branch line of upper flange main body is the conical pipe that mutual fit contacts, and clamping filter cloth between two conical pipes sticks the annular resilient seal part in filter cloth one side.The press-bending that bar and skeleton contact site generally have axial location of wearing as the muscles and bones of rigid filaments braiding conveyer belt of market sale; Recommend to adopt the other thicker bar of wearing of diameter to wear bar as the centre for the ease of installing, the centre is worn the bar two ends and can be utilized stop nut to be suspended under the upper flange main body.

The filter chamber lower seal structure of lower flange comprise the lower flange main body, on press ring flange and cyclic spring seal; After a series of centres were worn bar and are passed down through the hole of skeleton of rigid filaments braiding conveyer belt of outermost tubulose filtering medium respectively, the lower end that bar is worn in the centre was fixed on the edge of the oval profiled orifice of level of lower flange main body; The upper surface of last pressure ring flange is fixed on the lower surface and the sealing of lower flange main body; The last arm that stretches out above the last pressure ring flange and the last arm of lower flange main body are the conical pipe that mutual fit contacts; Clamping filter cloth between two conical pipes sticks the annular resilient seal part in filter cloth one side.Bar is worn in centre in that the upper flange main body connects, and its lower end connects the lower flange main body.

Outside outermost tubulose filtering medium, coat the tubulose closing membrane; The suspention of tubulose closing membrane is fixed under the upper flange main body; Be provided with the into mouth of pipe of cleaning fluid in the upper flange main body; The mouth of pipe is communicated with the ring-type filtering liquid chamber between outermost tubulose filtering medium and the tubulose closing membrane; Be provided with level filtrating in the lower flange main body and compile dish, filtrating is compiled dish through tubulose filtering medium, tubulose closing membrane bottom discharge opening, level filtrating and is discharged to filtrate (liquid.This programme helps preventing the diffusion of peculiar smell such as stench, helps the cleaning of filter chamber.

In filter chamber, be provided with at least one porous disc, air distribution tank and compile water pot, each porous disc comprises that three ply board shape filter medium, jam plate bar, suspension assembly, filter cloth are tightened mechanism, bound edge angle bead, main sewer mouth and air and got into total mouth of pipe at least; The jam plate bar is provided in a side of the rigidity horizontal stripe on porous disc top, and the bound edge angle bead is provided in a side of the horizontal stripe of porous disc bottom; The tabular filtering medium of innermost layer is uniformly distributed with slit and the inner bed course that is uniformly distributed with the space formation pervious bed of rigidity for the surface; The tabular filtering medium upper end of innermost layer connects the jam plate bar, and the lower end of the tabular filtering medium of innermost layer constitutes a porous disc core assembly after connecting the bound edge angle bead, and the space of the tabular filtering medium of innermost layer is communicated with the drainage duct mouth and the air induction conduit mouth of cleaner liquid; The air induction conduit mouth of each porous disc is arranged on the highest point of porous disc core assembly, and this mouth of pipe is through flexible pipe and connect air distribution tank lower nozzle; The drainage duct mouth of each porous disc is arranged on the lowest part of porous disc core assembly, and this mouth of pipe compiles the water pot upper orifice through flexible pipe and connection; Outermost tabular filtering medium parcel porous disc core assembly constitutes the porous disc main body; Air distribution tank top main mouth gets into total mouth of pipe through the air that flexible pipe connects upper flange; Compile the total mouth of pipe in water pot bottom connects lower flange through flexible pipe main sewer mouth; Bear the squeeze force direction along porous disc; The front and back position limiting structure that porous disc is provided with; The front and back position limiting structure is the elastomeric pad that on the tabular filtering medium in centre, fixedly is uniformly distributed with; The center line of the elastomeric pad of the correspondence position of every every row of every row of porous disc overlaps before and after the squeezing direction, and elastomeric pad can be plastic cement pad or tower compression spring.Be recommended in liner 4-50 purpose pad net between the tabular filtering medium of filter cloth and innermost layer.Elastomeric pad is to be used to guarantee the gap basically identical between the porous disc adjacent when mud is wet in filling.

The assembly that compresses of pressure-bearing device is to adopt the adjusting screw retaining mechanism; The adjusting screw retaining mechanism comprises; Along squeeze force direction left-right symmetric with many rows multiple row adjusting screw of arranging up and down, every row, every row are provided with two adjusting screws at least, and every row, every row are provided with two adjusting screws at least, and the adjustable nut that meshes on each adjusting screw is fixed on the crossbeam of frame; Pressing plate lean respectively about on the front end face of the adjusting screw arranged, and the guide wheel that is provided with through the pressing plate left and right sides moves before and after on rack rail.This programme is considered the distortion after frame foozle and the pressure-bearing; Make filter element bigger in the scale error of the pressure-bearing direction of the pressure-bearing framework of frame; Caused the depth of parallelism of filter chamber thickness of filter element inconsistent, the variable thickness of mud cake causes, and can not dewater smoothly in the place that mud cake is thicker.Utilize this programme can improve this disadvantage, tearing or adorn filter element open at needs in addition possibly also need this mechanism.

Another scheme of pressure-bearing device, the assembly that compresses of pressure-bearing device is to adopt connecting rod retaining mechanism and coupling mechanism force generating mechanism; The connecting rod retaining mechanism comprises upper and lower front rod, upper and lower back link, upper and lower dynamic link, power ear seat board, movable stand and jointed shaft; One end of the upper and lower front rod that is symmetrically arranged along the squeeze force direction is hinged through ear seat and pressing plate; One end of the upper and lower back link that is symmetrically arranged is hinged through the ear seat with upper and lower moving frame respectively; Upper and lower moving frame lean respectively about on the adjusting screw arranged; And can be respectively rack rail, on before and after move; Every row, every row are provided with two adjusting screws at least, and the adjustable nut that meshes on each adjusting screw is fixed on the crossbeam of frame; The other end of the other end of the upper and lower front rod that is symmetrically arranged, the upper and lower back link that is symmetrically arranged along the squeeze force direction is hinged with same hinged major axis with an end of the upper and lower dynamic link that is symmetrically arranged respectively; The other end of upper and lower dynamic link is hinged with left and right power ear seat board respectively; The output shaft of coupling mechanism force generating mechanism connects with screw rod one end through shaft coupling, and at least one end of screw rod is provided with thrust and radial axle bearing; Two screw rods that are parallel to each other that the coupling mechanism force generating mechanism drives are symmetricly set on the both sides of filter element respectively; Be connected on the power ear seat board separately with the nut of the driving of screw engages; Power ear seat board is arranged on the movable stand both sides; The squeezing direction of motion moves back and forth the guide wheel at movable stand two ends in lower bearing bracket guide rail upper edge, and the lower bearing bracket guide rail is fixed on the frame; The screen pipe unit of clamping one folded filter element between pressing plate and last bearing plate; Bearing plate in the middle of between the screen pipe unit of two filter elements, being provided with; Between pressing plate and middle bearing plate; Be equipped with limit spending frame between middle bearing plate and the middle bearing plate; Detachable latch has been set up in the limit spending, and the spacing middle bearing plate of adjacent need is provided with the collision block (72a) that cooperates with it; Last bearing plate is fixed on frame one end, and the squeezing direction of motion moves back and forth the guide wheel that pressing plate, middle bearing plate and a folded filter element are provided with through the left and right sides respectively in the rack rail upper edge; The nut that the coupling mechanism force generating mechanism drives is known nut or ball nut, and the screw rod of driving is known screw rod or ball screw.This programme is considered when tearing open or adorn filter element; Can not need solid mud in a series of filter element filter chambers that a large amount of flushings install in the pressure-bearing framework to reduce filter chamber thickness; The screw rod that utilizes this mechanism pulls into inclination with upper and lower front rod, upper and lower back link by level with the upper and lower dynamic link of connecting rod retaining mechanism; Pressing plate utilization limit spending frame retracts relevant filter element, and directly the filter element that will remove shifts out after unclamp front and back in the pressure-bearing framework.When filter element preparation was installed, reverse motions pushed into level with upper and lower front rod, upper and lower back link by inclination, and pressing plate pushes a folded filter element in the pressure-bearing framework of the suitable frame of pressure-bearing direction distance.If do not pull out the dismounting latch, then between pressing plate and the middle bearing plate, the distance between middle bearing plate and the middle bearing plate can not enlarge.

The control system adopts filter chamber squeezing cake thickness testing agency; Bearing plate, suspension guide wheel, stroke sensor and support in the middle of filter chamber squeezing cake thickness testing agency comprises; The middle bearing plate left and right sides is provided with guide wheel; Bearing plate in the middle of the clamping between two adjacent screen pipe unit; This guide wheel respectively with frame on rack rail engagement, middle bearing plate can the squeezing direction of motion move back and forth in the rack rail upper edge; Be provided with sensor stand in middle bearing plate both sides, on the bearing plate, the other end that the sensor stand cantilever stretches out is installed stroke sensor in the middle of an end of sensor stand is fixed on.Be recommended in and on middle bearing plate both sides, have two pairs of supports, can measure the depth of parallelism of filter element pressure-bearing surface.

The further scheme of pipe-line system; Pipe-line system is that the mouth of pipe that is provided with of the upper flange at each filter element is through air shut-off valve and compressed air main Lu Binglian; Compressed air main road connects the compressed air reservoir outlet, and compressed air reservoir connects compressed air pump.Compressed air is to be used for the cleaner liquid of porous disc clamp-oned from the porous disc core assembly compiling water pot, discharges outside the filter chamber again.

The further scheme of pipe-line system, pipe-line system are to be provided with vavuum pump in filtering liquid bath outlet, utilize porous disc core, cleaner liquid main road, compressed air main road with and air shut-off valve form and vacuumize the loop.

The further scheme of pipe-line system; Pipe-line system is that the upper flange at each filter element is provided with at least one filter chamber middle feed secondary inlet; The middle feed secondary inlet is through co-feed stop valve and wet mud main Lu Binglian; Wet mud main road connects the raw material pumping installations, and each filter chamber middle feed secondary inlet is located at the middle part of filter chamber respectively.This raw material secondary inlet is to be used for after wet mud gets into from filter chamber top; The stroke sensor on filter chamber top provides the signal that puts in place; And filter chamber bottom bulging stroke still is short of, and open the co-feed stop valve this moment separately, and the part is filled to reach the filter chamber thickness and the depth of parallelism of setting.

Pipe-line system is provided with purging system; Purging system comprises cleaning device, scavenger circuit and purge control valve; This scavenger circuit is that the filter chamber that the upper flange at each filter element is provided with advances the flushing water mouth of pipe through rinse water control valve and rinse water main Lu Binglian, and rinse water main road connects scavenging pump and exports.Cleaning device generally comprises flushing water pump and cleaning sink, and cleaning sink is communicated with flushing water pump.This purging system is to consider to need to clean when filter chamber; The residual sludge that reaches in the filter chamber is got rid of; For example when needing to change filter cloth; Perhaps need dismantle this filter element; Also the solid sludge in the filter chamber of some filter elements need be got rid of at other filter element of dismounting; This loop directly is pumped into rinse water in the filter chamber, opens valve after the cleaning, and clear cleaning liquid gets into and cleans turbid liquid bath.

Another scheme of the purging system of pipe-line system; Purging system comprises scavenger circuit, cleaning device and purge control valve; Cleaning device comprises cleaning sink and scavenging pump; Cleaning sink connects scavenging pump, and this scavenger circuit is that compressed air system is connected compressed air main road through air control main valve with the cleaning bypass control valve respectively with the scavenging pump outlet.Compressed air is to be used for the cleaner liquid of porous disc is clamp-oned the air distribution tank from the porous disc core assembly, discharges outside the filter chamber again.

Pipe-line system is provided with another scheme of purging system, and purging system is between the cleaner liquid discharging mouth of pipe of the lower flange of each filter element and cleaner liquid main, to be provided with the cleaner liquid control valve.Compressed air is to be used for the cleaner liquid of porous disc is clamp-oned the air distribution tank from the porous disc core assembly, discharges outside the filter chamber again.

Pipe-line system is provided with another scheme of purging system; Pipe-line system is that the turbid liquid bath of cleaning is connected dried mud main road through cleaning turbid hydraulic control valve respectively with dried mud conveying device with dried mud control valve, and dried mud main road and the control valve that is communicated with each filter element connect the mouth of pipe on the lower flange.These two control valves can be used to cooperate the cleaning of filter chamber.

The further scheme of pipe-line system, pipe-line system are between wet mud main road and the outlet of raw material pumping installations, to be provided with the filter sand device.This programme is in order to prevent the damage of grit to filter cloth.

The further scheme of pipe-line system, pipe-line system are that the dried mud conveying device that dried mud main road connects is a booster pump, and booster pump is rotary-piston pump or reciprocating piston pump.This programme is to still have mobile dried mud in order will raw material to become after the dehydration, and for example moisture content utilizes pipeline to be transported to place higher or far away at 50% activated sludge.

The further scheme of pipe-line system, pipe-line system are to be provided with vavuum pump in filtering liquid bath outlet, utilize porous disc core, cleaner liquid main road, compressed air main road with and air shut-off valve form and vacuumize the loop.This programme is in order to improve the raw material dewatering speed, to satisfy the dehydration requirement of extraordinary raw material.Also can not use compressed air, utilize vacuum pumping pump that the cleaner liquid in the porous disc is got rid of, advantage is to make raw material obtain bigger dehydration driving force.

The working procedure of pliable and tough pipe squeezer:

The charging of filter element is filtered: a folded filter element is installed in the pressure-bearing framework of frame; Utilize the raw material pumping installations that raw material is transported to one as in the pressurized filter element; Wet mud raw material is under high pressure with the filter chamber bulging of screen pipe unit; Adjacent porous disc is because the effect of elastomeric pad produces the basic gap that equates; Wet mud is clamp-oned in all open gaps; When sending, the stroke sensor of any one monitoring point of filter chamber squeezing cake thickness testing agency fills when putting in place; The charging stop valve is closed; If the displacement of monitoring point, the left and right sides still is short of; Open the wet mud of corresponding co-feed stop valve utilization and carry out the part filling; Make the local bulging that continues in screen pipe unit; The all charging stop valves of this filter element are closed after satisfying the requirement of the filter chamber thickness and the depth of parallelism, and this filter element transfers the pressurized filter element to.

Filter element filter press: then the remaining part of the filter element filter element in turn put pressure on him as a filter chamber filled with wet mud, the filter element or filter chamber pressure device for detecting the pressure sensor, when the pressure reaches a first filter chamber a set value stops feeding for packing, when the pressure is reduced, or the end of the dwell time to continue its filter chamber filled with wet mud, when the filter chamber press mud cake thickness testing agency issued any monitoring point in place of the filter element fills the feed valve closed, if left in place to monitor the displacement, opening the corresponding auxiliary feed using wet sludge filling valve, the thickness of the filter chamber to meet the requirements and the parallelism of all the filter element off the feed valve closed, the when the pressure of the filter element coming into the filter element, which in this cycle is no longer filled with wet mud; pressure if the rack frame pressure filter element filter chamber pressure is not enough, and turn to the other as the pressure of the filter element filter chamber filled with wet mud continued expansion force, at any time during filling of the filter element must ensure that each pressure filter element as the thickness of the filter chamber and parallelism requirements.

Filter element and pressurized filter element all are in dewatering state at work owing to exert pressure; If raw material is very easy to dehydration; Can consider temporarily and will close as the cleaner liquid control valve of the porous disc of the filter element of exerting pressure; Outstanding its function of exerting pressure; Make the major part cleaner liquid temporarily rest on the core of porous disc; Slow down the filter element of exerting pressure and become the speed of suppressing; Guarantee the squeezing time of pressurized filter element; Transferring the unlatching of pressurized filter element at it has closing valve, utilizes compressed air or vavuum pump to quicken to discharge the core cleaner liquid of 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 satisfying the requirement of filter chamber thickness and the depth of parallelism, transfer the pressurized filter element to.

During squeezing pressurized filter element; The filter cloth that a series of cushions of the filter chamber front and back position limiting structure on the plane, front and back of the porous disc in the middle of the screen pipe unit head on the inwall coating of filter cloth and filter chamber contacts; The filter cloth that a series of cushions between every layer of porous disc head on the coating of filter cloth and adjacent porous disc contacts; In the filter chamber of the screen pipe unit of filter element, raw material is filled in around each porous disc; After opening air shut-off valve, filtrating sees through the filter cloth of screen pipe unit and the sieve aperture of all tubulose filtering mediums, along the sieve aperture of tubulose rigid filaments braiding conveyer belt and muscles and bones axially conflux into and descend; Filtrating sees through the micropore of the filter cloth of porous disc simultaneously, along the sieve aperture of tabular rigid filaments braiding conveyer belt and muscles and bones axially conflux into and descend, solid phase is stayed filter chamber; Can pump into the compressed air that is lower than squeeze force, intermittently or continuously will extrude from drainage duct and drainage duct mouth behind the cleaner liquid importing manifold trunk wherein from mouth of pipe importing porous disc core assembly with the compressed air of lower pressure; Also can open vavuum pump, allow cleaner liquid get into the filtering liquid bath.

Make excircle extruding more flat of the screen pipe unit of the pressurized filter element that is clamped between pressing plate and the bearing plate when the expansive force of the filter element of exerting pressure; The gap, front and back of the interior multilayer porous disc of filter chamber is along with the compression of cushion diminishes simultaneously, thereby the principle that chamber space is diminished is accomplished Separation of Solid and Liquid; Though the filter chamber upper axial end portion of filter element can not be shriveled by compacted assembly by the constraint of upper flange; But the filter pulp of the axial epimere of filter chamber wherein is also because the flowability of filter pulp obtains and the filter pulp pressure in the axial stage casing of filter chamber is basic identical; Possibly partly get into the wet filter pulp that the extruding of upper axial end portion has been deposited behind the part filter residue pressurized in the axial stage casing of filter chamber; Filtrating continuation sees through the hole of whole tubulose filtering medium and tabular filtering medium and discharges, and filter residue is trapped in filter chamber.

The deslagging of filter element: after the pressurized filter element under high pressure guarantees enough dewatering times; Open the deslagging stop valve of this pressurized filter element; Continue to open successively filter element and squeeze force is provided as the filter element of exerting pressure; The utilization dried mud of exerting pressure in the filter chamber of filter element with this pressurized filter element is clamp-oned dried mud main road; Close the deslagging stop valve after getting rid of dried mud, this filter element changes into and is the filter element of exerting pressure that sorts successively; Restart the next press dewatering work period.

Whole working procedure adopts the PLC programme-control, can accomplish unmanned.When big, the filter element of some can be formed filter assemblies for treatment scale, each filter assemblies is still carried out the working procedure of above-mentioned filter element.

This equipment is fit to the more mud of organic portion, and for example, sludge of sewage treatment plants accounts for about 50% at general organic matter behind the over dry, and this mud is fine and smooth especially, does not contain hard branch.Since the thickness of the filter chamber of the filter element may be zero, the filter cloth is not blocked and good fluidity cake, can by direct extrusion slag from the filter tube unit sealing lips of the mouth is discharged cake, do not take the aforementioned patents and the prior art frame (membrane) filtration machine working process slag phase jitter, a filter chamber of the device control similar to the tap outlet roller type marketed dryer outlet gate, as the device many large filtration area, although the filter chamber mud cake after filtration chamber may remain a small corner off the cement cake, but productivity is still relatively Roller dryer greatly improved; small amount of residual dewatered filter cake indoor use regular cleaning methods to remove.

Equipment for separating liquid from solid of the present invention beneficial effect compared with prior art is:

1, this equipment for separating liquid from solid does not have complicated running gear, and squeeze force is higher, and fault rate is low;

2, being employed in the screen pipe unit increases porous disc, even filter area increases greatly, but sealing problem well avoided, be fit to the 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 power consumption minimum of filter chamber sealing; The time ratio that is used to unload filter cake has improved filter efficiency than sheet frame (barrier film) filter press much less;

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

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

5, filter element designs simplification, thus the metal consumption of processed in units amount is reduced, and it is tall and big more to help the ten minutes that filter element does, thereby realizes ultra-large processing scale production;

When 6, filter cloth damages, only single area is changed, thereby the consumption of having saved time and filter cloth is reused after not serious damaged filter cloth can glue benefit for stopping up;

7, utilize the stressed of filter element and the role's that exerts pressure the squeezing that converts raw material in the filter element filter chamber; Squeeze force directly utilizes the pressure of pump in stock; Feedstock pump pressurization pressure per ton is at 1Mpa; Only need consume 0.5Kw.h, be that 60% dried mud cake mud per ton needs consuming electric power 1Kw.h with the wet mud dehydration of moisture content 80%; And other high-pressure compressing machine is that 80% dried mud cake squeezing consuming electric power just arrives 3-8Kw.h with the wet mud dehydration of moisture content 97%.Because this FU is handled energy consumption and is near or below the belt filter, running cost reduces greatly.

8, powerful extruding spoil disposal method is particularly suitable for follow-up direct supercharging pumping, omits the conventional belt conveying or does not have a helical feed and energy consumption thereof; Suitable continuous drying process need utilize the brute force extruding spoil disposal method and the supercharging pumping of pliable and tough tube pressure filter to the situation of mud cake extrusion material distributing machine, directly forms lath-shaped mud, omits the Special Equipment of extrusion material distributing machine.

9, be applicable to vacuum suction filter, the backwashing manner of equipment flushing can satisfy more technological requirement;

10, operation easier reduces, but automated production.

Description of drawings

Fig. 1 is the shaft side figure of the pliable and tough pipe squeezer of 7 filter elements of demonstration of the present invention;

Fig. 2 is the shaft side figure of the pliable and tough pipe squeezer of 4 filter elements of demonstration of the present invention;

Fig. 3 show Fig. 2 pliable and tough pipe squeezer overlook shaft side figure;

Fig. 4 is the shaft side figure of the filter element of pliable and tough pipe squeezer;

Fig. 5 is the filter element shaft side figure that is provided with two-layer porous disc 36 and suspension assembly of the present invention, and porous disc only shows that both sides are provided with porous disc extension 36c;

Fig. 6 shows the cutaway view of A kind porous disc 36a in screen pipe unit 6a of filter element of the present invention;

Fig. 7 is the E-E part sectioned view of the filter element of Fig. 6;

Fig. 8 Fig. 7 filter element the H-H cutaway view of screen pipe unit,

Fig. 9 shows that spiral coil skeleton 54, muscles and bones 50 and the centre of Fig. 7 and 10 rigid filaments braiding conveyer belt 42 wear bar 50a assembly drawing;

Figure 10 is that local employing rigid filaments weaves conveyer belt 42 as tabular filtering medium 42a in the innermost layer of porous disc and the middle assembly drawing of wearing bar 50, and skeleton 54 is a spiral coil;

Figure 11 is the axonometric drawing that shows the porous disc core assembly part of porous disc main body, does not show lining net 51, filter cloth 48, only shows that the right side is provided with porous disc extension 36c;

Figure 12 is the M-M profile of porous disc 36a among Figure 11;

Figure 13 is the partial enlarged drawing I of porous disc 36a among Figure 11;

Figure 14 is the local amplification profile R of Figure 12;

Figure 15 is the local amplification profile S of Figure 12;

Figure 16 shows the cutaway view of B kind porous disc 36b in screen pipe unit 6a of filter element;

Figure 17 is the axle side sketch map of tower compression spring 34b;

Figure 18 is the F-F part sectioned view of the filter element of Figure 16;

Figure 19 only shows that Fig. 8 hangs the local amplification profile Q of assembly;

Figure 20 is the middle bearing plate 5 and the shaft side figure of limitting spending frame 13 (also being sensor stand) among Fig. 1;

Figure 21 is the F-F profile of porous disc 36b among Figure 16;

Figure 22 is the local amplification profile J of Figure 19;

Figure 23 is local amplification profile K;

Figure 24 pipe-line system figure of the present invention;

Figure 25 further pipe-line system figure of the present invention;

Figure 26 further pipe-line system figure of the present invention;

All main roads represent that with two-wire legend is presented at the upper right corner in pipe-line system figure, and raw material is wet mud pipeline not getting into filter element, and coming out from filter element is dried mud pipeline.

Wherein: the 1-frame.The 1a-crossbeam; 1b-lower bearing bracket guide rail; The last bearing plate of 2-; The 3-rack rail; The 4-guide wheel; Bearing plate in the middle of the 5-; The 6-filter element; 6a-screen pipe unit; The 7-pressing plate; The 8-adjusting nut; The 9-adjusting screw(rod); 10-hangs guide wheel; The 11-pedestal; The 12-stroke sensor; A 12a-left side; Upper right stroke sensor, a 12b-left side; The bottom right stroke sensor, 13-limit spending frame or sensor stand; 14a; The upper and lower dynamic link of 14b-; 15-filter chamber squeeze force direction, 16-screw rod, 17-screw rod thrust and radial axle bearing; The 18-jointed shaft; 19a; The upper and lower front rod of 19b-, the long jointed shaft of 20-, 21a; The upper and lower back link of 21b-; The 22-movable stand; 22a-power ear seat board, 23-nut, 24-electricity drive speed reducer; The 25-moving frame; The tubulose closing membrane of 26-filter element, bendable tune during the 26a-squeezing, inflexibility section during the 26b-squeezing; The 27-discharge opening; 28-presses down ring flange, 29-pull bar sealing shroud, 30-upper flange main body; The 31-pull bar; The 32-arm-tie, 33-connector, 34-bed course; 35a; 35b-middle feed secondary inlet; The 36-porous disc, 36a-A kind porous disc, 36b-B kind porous disc; 36c-porous disc extension; 37a-A kind porous disc discharge opening, 37b-B kind porous disc discharge opening, 38a-A kind porous disc air inlet; 38b-B kind porous disc air inlet; The 39a-air distributor, 40a-air distributor air inlet, 40b-compiles the water pot discharge opening; The 41-suspension bracket; 42-rigid filaments braiding conveyer belt, 42a-tubulose rigid filaments braiding conveyer belt, the rigid filaments braiding conveyer belt that 42b-is tabular; The 43-filter chamber; 43a-filter chamber top, 43b-filter chamber bottom, 44-lower flange main body; 45-annular resilient seal part; The last pressure of 46-ring flange, 47-securing member, 48-filter cloth; The 49-clamp nut; 50-wears bar, wears bar in the middle of the 50a-, and 51-serves as a contrast net; 52-extruding row filter cake moving direction; 53-level filtrating is compiled dish, 54-skeleton, 55-elastic washer; 56-jam plate bar; 57-bound edge angle bead, elastic spacer under the 57a-, the 58-air inlet mouth of pipe; 59-; 59-leads the filtrating ditch, and 60-filtrating is drained the mouth of pipe, 61-counterbore; The thin bed course of rigidity under the 62-; The last rigidity of 63-approaches bed course, 64-hanging piece, the last elastic spacer of 65-; 66-leads the protruding grain of filtrating; 67-leads the filtrating ditch, 68-blind plugging, the 69-pull bar shaft shoulder; 70-pull bar sealing shroud; 71-C type card, 72-latch, 72a-collision block; 73-rinse water main road; The 74-mud main road of wetting, 75-filter assemblies, 76-air main road; The dried mud main of 77-road; 78-cleaner liquid main road, the 79-mud storage warehouse that wets, 80-raw material pumping installations; The 81-cleaning sink; The 82-flushing water pump, 83-compressed air reservoir, 84-compressed air pump; 85-filtering liquid bath; 86-cleans turbid liquid bath, the dried mud conveying device of 87-, 88-filter sand device; The 89-vavuum pump; The 90-booster pump, G1-stoste passage, the outlet of G2-deslagging; G3-main sewer mouth; The G4-filter chamber advances the flushing water mouth of pipe, and the G5-air gets into total mouth of pipe, G6-flushing liquor inlet; F1a; F1b-co-feed stop valve; F2-rinse water control valve, F3-charging stop valve, F4-deslagging stop valve; F5-cleans turbid hydraulic control valve; The dried mud control valve of F6-, F7-air control main valve, F8-cleans bypass control valve; The F9-air shut-off valve, F10-cleaner liquid control valve.

The specific embodiment

Below in conjunction with accompanying drawing filter element of the present invention is done further to describe.

In Fig. 2 to 15,17 and 20, what shown pliable and tough pipe squeezer of the present invention totally executes example 1.

Pliable and tough pipe squeezer mainly comprises pumping installations, filter assemblies, pressure-bearing device, dried mud conveying device, filtrating discharge system, pipe-line system and control system, and comprehensively becomes the full-automatic Separation of Solid and Liquid integrated treatment of electromechanical integration complete set of equipments; Pressure-bearing device comprises and compresses assembly and bearing structure; Bearing structure comprises pressing plate 7, rack rail 3, frame 1 and bearing plate, bearing plate and last bearing plate 2 in the middle of bearing plate comprises; Shown filter chamber squeeze force direction 15 at Fig. 2 and 3; The screen pipe unit 6a of four filter elements 6 of clamping between the pressing plate of squeezer and last bearing plate; Frame utilizes crossbeam 1a, longeron 1b and rack rail 3 that pressing plate 7 and last bearing plate 2 are surrounded the pressure-bearing framework of a sealing, and this framework is installed on the basis 11.Filter assemblies comprises a folded filter element 6; One folded filter element is arranged in parallel on the rack rail that is arranged on frame and can relatively moves along arranging fore-and-aft direction, and arranging fore-and-aft direction also is 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, the filter chamber, and the guide wheel 4 of walking mechanism is arranged on the upper flange left and right sides, guide wheel respectively with frame on rack rail engagement; Along the squeeze force direction, the flexible screen pipe unit of clamping such one folded filter element between the pressing plate of pressing device and bearing plate; Lower flange comprises deslagging outlet G2 and filter chamber lower seal structure thereof; The screen pipe unit 6a of filter element is hung under the upper flange, and lower flange is hung under the screen pipe unit; The vertical axis of the oval profile of the level cross-sectionn of the screen pipe unit of all filter elements all is parallel to each other, and this vertical axis and squeeze force direction are perpendicular; The screen pipe unit comprises the following elements of radial flexibility: three layers of tubulose filtering medium (abbreviation of tubular filtering medium) and connector, every layer tubulose filtering medium level cross-sectionn are that the vertical axis center line of oval profile overlaps and vertical with horizontal line; The tubulose filtering medium 48 inner filter chambers that form of innermost layer, liner 30 purpose stainless steel lining nets 51 are as intermediate layer tubulose filtering medium between the tubulose filtering medium 48 of outermost tubulose filtering medium 42 and innermost layer; Every layer of tubulose filtering medium upper end is connected through hermetically-sealed construction on the filter chamber with upper flange and seals, and the lower end of the tubulose filtering medium together that is layering is connected with filter chamber lower seal structure also can open and close filter chamber 43, and the lower end connection deslagging of tubulose filtering medium exports G2; Material inlet is communicated with stoste passage G1 on the upper flange, and the stoste passage is communicated with filter chamber; Outermost tubulose filtering medium adopts rigid filaments braiding conveyer belt 42; Rigid filaments braiding conveyer belt surrounds the structure of the perpendicular wall of filter chamber of the radially pliable and tough vertical axial dimension fixed length of a tubulose; The rigid filaments braiding conveyer belt vertical upper axial end of tubulose is connected the lower end of upper flange, and this rigid filaments braiding conveyer belt forms a series of sieve apertures; Rigid filaments braiding conveyer belt 42 comprises muscles and bones and skeleton 54, and muscles and bones is the downward a series of bars 50 of wearing of long axis, and skeleton 54 is around the supporter of wearing bar; Per two adjacent skeletons 38 are worn bar 50 and are hinged together with same, and all of rigid filaments braiding conveyer belt are worn bar, and two ends and adjacent skeletal fixation be together about in the of 50.

With reference to figure 9 and 10; Rigid filaments braiding conveyer belt as the outermost tubulose filtering medium in screen pipe unit comprises muscles and bones and skeleton; Muscles and bones is the downward a series of bars 50 of wearing of long axis; Per two adjacent skeletons and same muscles and bones are hinged together; All muscles and bones two ends of rigid filaments braiding conveyer belt and adjacent skeletal fixation are together; The muscles and bones upper end is connected upper flange, the spiral coil 54 that the skeleton of rigid filaments braiding conveyer belt is.

With reference to figure 6 to 9, hermetically-sealed construction comprises upper flange main body 30, presses down ring flange 28 on the filter chamber of upper flange, cyclic spring seal 45 and centre wear bar 50a; A series of centres are worn bar and are inserted respectively downwards in the hole of skeleton 54 of rigid filaments braiding conveyer belt of outermost tubulose filtering medium, and the upper end of wearing bar is fixed on the edge of the oval profiled orifice of level of upper flange main body 30; The lower surface that presses down ring flange is fixed on the upper surface and the sealing of upper flange main body 30; Pressing down the lower branch line 28a that stretches out below the ring flange and the lower branch line 30a of upper flange main body 30 is the conical pipe that mutual fit contacts, and clamping filter cloth 48 between two conical pipes sticks annular resilient seal part 45 in filter cloth one side.

The filter chamber lower seal structure of lower flange comprise lower flange main body 44, on press ring flange 46 and cyclic spring seal 45; A series of centres are worn bar 50a and are passed down through respectively in the hole of skeleton 54 of rigid filaments braiding conveyer belt of outermost tubulose filtering medium 42, and the lower end that bar is worn in the centre is fixed on the edge of the oval profiled orifice of level of lower flange main body 44; The upper surface of last pressure ring flange 46 is fixed on the lower surface and the sealing of lower flange main body; The last arm 46a that stretches out above the last pressure ring flange and the last arm 44a of lower flange main body 44 are the conical pipe that mutual fit contacts; Clamping filter cloth 48 between two conical pipes sticks annular resilient seal part 45 in filter cloth one side.

With reference to figure 4,6 to 8; Outside outermost tubulose filtering medium, coat tubulose closing membrane 26; The suspention of tubulose closing membrane is fixed on the upper flange main body 30 times; Be provided with the into mouth of pipe G6 of cleaning fluid in the upper flange main body; The mouth of pipe is communicated with the ring-type filtering liquid chamber between outermost tubulose filtering medium and the tubulose closing membrane; Be provided with level filtrating in lower flange main body 44 and compile dish 53, filtrating is compiled dish through tubulose filtering medium, tubulose closing membrane bottom discharge opening 27, level filtrating and is discharged to filtrate (liquid G3a.

With reference to figure 5,6,11 to 15; In filter chamber, be provided with at least one porous disc 36, air distribution tank 39a and compile water pot 39b, each porous disc comprises that two-layer tabular filter medium, jam plate bar 56, suspension assembly, filter cloth tighten mechanism, bound edge angle bead 57, main sewer mouth G3 and air and get into total mouth of pipe G5; The jam plate bar is provided in a side of the rigidity horizontal stripe on porous disc top, and the bound edge angle bead is provided in a side of the horizontal stripe of porous disc bottom; The tabular filtering medium 42a of innermost layer is uniformly distributed with slit and the inner bed course that is uniformly distributed with the space formation pervious bed of rigidity for the surface; The tabular filtering medium upper end of innermost layer connects the jam plate bar, and the lower end of the tabular filtering medium of innermost layer constitutes a porous disc core assembly after connecting the bound edge angle bead, and the space of the tabular filtering medium of innermost layer is communicated with air induction conduit mouth 58 with the drainage duct mouth 60 of cleaner liquid; The air induction conduit mouth 58 of each porous disc is arranged on the highest point of porous disc core assembly, and this mouth of pipe is through flexible pipe 38a and connect air distribution tank lower nozzle 38b; The drainage duct mouth 60 of each porous disc is arranged on the lowest part of porous disc core assembly, and this mouth of pipe compiles water pot upper orifice 37b through flexible pipe 37a and connection; Outermost tabular filtering medium 48 parcel porous disc core assemblies constitute the porous disc main body; Air distribution tank top main mouth 40a gets into total mouth of pipe G5 through the air that flexible pipe connects upper flange; Compile the total mouth of pipe 40b in water pot bottom connects lower flange through flexible pipe main sewer mouth G3.

With reference to figure 5 and 17; Bear the squeeze force direction along porous disc; The front and back position limiting structure that porous disc is provided with, front and back position limiting structure are the elastomeric pads 34 that on the tabular filtering medium in centre, fixedly is uniformly distributed with, and the center line of the cushion of the correspondence position of every every row of every row of porous disc overlaps before and after the squeezing direction; In Fig. 6; Elastomeric pad is plastic washers 34a and tower compression spring 34b; The compressible end face that tower compression spring 34b contacts with filter cloth coats net 51, and tower compression compressible another end face of spring and middle tabular filtering medium 42a are fixing with securing member 47.

With reference to figure 9 and 10; The tabular filtering medium of the innermost layer of porous disc adopts rigid filaments braiding conveyer belt 42; The rigid filaments braiding conveyer belt 42a of porous disc is the overall structure of a tabular vertical axial dimension fixed length; Rigid filaments braiding conveyer belt comprises muscles and bones and skeleton; Skeleton is a spiral coil 54; Muscles and bones is the downward a series of bars 50 of wearing of long axis, and per two adjacent skeletons 54 are hinged together with same muscles and bones, and all the muscles and bones two ends and the skeleton 54 of rigid filaments braiding conveyer belt are fixed together; The upper end fixed connection lock lath 56 of bar 50a is worn in a series of centres of passing the frame center hole, and the lower end that bar is worn in the centre connects bound edge angle bead 57.

Filter cloth is tightened mechanism and is elected the vertical cross section of the jam plate bar 56 of porous disc core assembly as the C section bar, and Open Side Down coats the upper end of the tabular filtering medium 42a of innermost layer for the C section bar; The vertical cross section of bound edge angle bead 57 is elected the C section bar as, and the opening of C section bar upwards coats the bottom of the tabular filtering medium 42a of innermost layer, the thin bed course 59 of a U-shaped of liner between the tabular filtering medium 42a of bound edge angle bead 57 and innermost layer; Bar 50a is worn from the centre bore that passes the tabular filtering medium 42a of innermost layer down successively, thin bed course 59 and bound edge angle bead 57 in the centre; The centre is worn bar 50a upper end and is fixed on the jam plate bar 56; The centre is worn the boss 49 of bar bottom and is held the tabular filtering medium 42a of innermost layer; Wear in the centre between the tabular filtering medium lower surface of boss 49 upper surfaces and innermost layer of bar bottom and be provided with elastic washer 55, elastic washer is the compression spring of spiral elasticity steel wire; Boss replaces with the nut 49 of wearing bar 50a in the middle of being fixed on, and boss is absorbed in the counterbore 61 of bound edge angle bead 57; The tabular filtering medium of innermost layer, thin bed course and bound edge angle bead can be worn bar along the centre simultaneously and slide up and down; After filter cloth 48 coats the porous disc core assemblies, centre bore, thin bed course 59 and the bound edge angle bead 57 of the tabular filtering medium 42a of innermost layer are hung jam plate bar 56 times, jam plate bar 56 is connected on the filter chamber that presses down flange 28 43 inner faces of upper flange through the suspension assembly.

Refer to Figure 11 and 13, each bearing permeable plate along the direction of the right side of a permeable plate can be bent extension 36c, if you want, on the left has a permeable plate extension, extension only permeable panels on each side The inside and outside of all the layers extending laterally qualitative filter plate, woven wire conveyor belt in the rigid extension 36c, respectively, with upper and lower end of the elastic pad, extension 36c of the upper end with Article 65a of the elastic pad lock lateral connections the left or right side slat end 56, the lower extension 36c of the lower end surface of the elastic pad of the package is to the lateral edges of the extension 57 (the two can be integrated), the upper and lower elastic strip is fixed between the wear pad Article 50a of the upper and lower ends; the lock strip 56 or the corners of the package before and after the end surface 57 fixed to a rigid thin cushion 63, a rigid thin permeable cushion cantilevered clamping plate extension 36c of the upper and lower elastic cushion before and after the end of 65,57, rigid thin cushion can be elastic mesh or elastic sheet; under elastic cushion strip rigid thin cushion 63 with the package on the corner of 57 thin cushion of two vertical shaft 59 edges become one; permeable plate extension before and after the filter surface in its natural state and central filter surface permeable plates remain basically the same plane.Bound edge angle bead 57 among the figure is provided with to lead filtrating ditch 67 or be provided with following elastic spacer outer surface leads the protruding grain 66 of filtrating.

Referring to figs. 2 to 3, the assembly that compresses of pressure-bearing device is to adopt connecting rod retaining mechanism and coupling mechanism force generating mechanism; The connecting rod retaining mechanism comprises upper and lower front rod 19a, 19b, upper and lower back link 21a, 21b, upper and lower dynamic link 14a, 14b, power ear seat board 22a, movable stand 22 and jointed shaft 18; The upper and lower front rod 19a that is symmetrically arranged along the squeeze force direction, the end of 19b are hinged through ear seat and pressing plate 7; The upper and lower back link 21a that is symmetrically arranged, the end of 21b are hinged through ear seat 25 with upper and lower moving frame respectively; Upper and lower moving frame lean respectively about on the adjusting screw 9 arranged; And can be respectively rack rail 31b, on before and after move; Every row, every row are provided with two adjusting screws 9 at least, and the adjustable nut 8 of engagement is fixed on the crossbeam 1a of frame 1 on each adjusting screw 9; The other end of the upper and lower front rod 19a that is symmetrically arranged, the other end of 19b, the upper and lower back link 21a that is symmetrically arranged along the squeeze force direction, 21b is hinged with same hinged major axis 20 with the end of the upper and lower dynamic link 14a that is symmetrically arranged, 14b respectively; The other end of upper and lower dynamic link 14a, 14b is hinged with left and right power ear seat board 22a respectively; The output shaft of coupling mechanism force generating mechanism connects with screw rod 16 1 ends through shaft coupling, and at least one end of screw rod is provided with thrust and radial axle bearing 17; Two screw rods that are parallel to each other 16 that the coupling mechanism force generating mechanism drives are symmetricly set on the both sides of filter element 6 respectively; Be connected on the power ear seat board 22a separately with the nut 23 of the driving of screw rod 16 engagement; Power ear seat board is arranged on movable stand 22 both sides; The squeezing direction of motion moves back and forth the guide wheel 4 at movable stand 22 two ends in lower bearing bracket guide rail 1b upper edge, and lower bearing bracket guide rail 1b is fixed on the frame 1; The screen pipe unit 6a of clamping one folded filter element between pressing plate 7 and last bearing plate 2, bearing plate 5 in the middle of between the screen pipe unit of two filter elements, being provided with; With reference to Figure 20, between pressing plate and middle bearing plate, be equipped with limit spending frame 13 between middle bearing plate and the middle bearing plate, detachable latch 72 has been set up in the limit spending,, the spacing middle bearing plate 5 of adjacent need is provided with the collision block 72a that cooperates with it; Last bearing plate 2 is fixed on frame 1 one ends, and the squeezing direction of motion moves back and forth the guide wheel that pressing plate, middle bearing plate and a folded filter element are provided with through the left and right sides respectively in the rack rail upper edge; The nut that the coupling mechanism force generating mechanism drives is a ball nut, and the screw rod of driving is a ball screw.

Referring to figs. 1 to 3; The control system adopts filter chamber squeezing cake thickness testing agency; Bearing plate 5, suspension guide wheel 10, stroke sensor 12 and sensor stand 13 in the middle of filter chamber squeezing cake thickness testing agency comprises; The middle bearing plate left and right sides is provided with the suspension guide wheel; Bearing plate in the middle of the clamping between two adjacent screen pipe unit 6a; This guide wheel respectively with frame on rack rail engagement, middle bearing plate can the squeezing direction of motion move back and forth in the rack rail upper edge; Be provided with sensor stand 13 in middle bearing plate both sides, an end of sensor stand 13 utilize securing member 47 be fixed in the middle of on guide wheel 10 walls of bearing plate, the other end that the sensor stand cantilever stretches out is installed stroke sensor 12.Sensor stand adopts same support 13 with limit spending frame.

In Fig. 1,16 and 23, shown the filter element that is provided with the multilayer porous disc of the present invention pliable and tough pipe squeezer totally execute example 2.

The difference of present embodiment and embodiment 1 is:

Pressing device is provided with four filter elements, is provided with three porous disc 36b in each filter element.

The rigid filaments braiding conveyer belt of the outermost layer tubulose filtering medium of the screen pipe unit of this filter element; Through changing the slotted hole diameter of skeleton; Make the oval tapered filter chamber in two ends; This filter chamber presents jujube nuclear shape; So more help squeezing required deformation requirements; Even the porous disc of lesser amt is set in the screen pipe unit, the squeezing filter chamber when becoming flat adjacent filter element get upper and lower flange and also can not bump.The rigid filaments braiding conveyer belt outside is not provided with the tubulose closing membrane.

With reference to figure 1, the assembly that compresses of pressure-bearing device is to adopt the adjusting screw retaining mechanism; The adjusting screw retaining mechanism comprises; Along squeeze force direction left-right symmetric with many rows multiple row adjusting screw of arranging up and down; Every row, every row are provided with two adjusting screws 9 at least; Every row, every row are provided with an adjusting screw 9 at least, and the adjustable nut 8 of engagement is fixed on the crossbeam 1a of frame 1 on each adjusting screw 9; Pressing plate 7 lean respectively about on the front end face of the adjusting screw 9 arranged, and the guide wheel that is provided with through the pressing plate left and right sides moves before and after on rack rail 3.

With reference to Figure 18; Suspension assembly 29 comprises pull bar 31, arm-tie 32, pull bar sealing shroud 70, C type card 32 and connector; Pull bar 31 passes the through hole that presses down ring flange 28; In the groove under the pull bar shaft shoulder 69 at C type card 71 levels insertion pull bar 31 tops; The C type fastens the bottom at the pull bar sealing shroud; The pull bar sealing shroud is fixed on and presses down ring flange 28 upper surfaces, with blind plugging 68 pull bar is sealed in the pull bar sealing shroud behind the installation pull bar, leaks from the hole on the filter chamber inner face of upper flange to prevent stoste; The pull bar bottom connects arm-tie, the jam plate bar 56 that arm-tie chestnut one dish pumpkin connector 64 connects porous disc.

The difference of the porous disc of present embodiment and A kind porous disc is, wears in the centre between the tabular filtering medium lower surface of boss 49 upper surfaces and innermost layer of bar bottom elastic washer 55 is not set.

In Fig. 6, the elastomeric pad of porous disc is plastic cement filler strip 34c.

In Figure 22, show the embodiment 1 of the basic pipe-line system of pliable and tough pipe squeezer of the present invention.

Native system is provided with four filter assemblies 75, and each filter assemblies 75 comprises three filter elements 1,2 and n.

This pipe-line system be the stoste import G1 that is provided with of the upper flange at each filter element through charging stop valve F3 and wet mud main road 74 and connect, wet mud main road connects raw material pumping installations 80; The deslagging outlet G2 that is provided with at the lower flange of each filter element is through deslagging stop valve F4 and dried mud main road 78 and connect, and dried mud main road connects the mouth of pipe G3 that dried mud conveying device 87 is provided with at the lower flange of each filter element and connects cleaner liquid discharge main road 77.Charging stop valve and deslagging stop valve adopt ball valve or butterfly valve.

The further scheme of pipe-line system; Pipe-line system is included in mouth of pipe G5 that the upper flange of each filter element is provided with through air shut-off valve F9 and compressed air main road 76 and connect; Compressed air main road connects compressed air reservoir 89 outlets, and compressed air reservoir connects compressed air pump 84.

Pipe-line system also is provided with a kind of purging system; Purging system comprises cleaning device, scavenger circuit and purge control valve; This scavenger circuit is that filter chamber that the upper flange at each filter element is provided with advances flushing water mouth of pipe G4 through rinse water control valve F2 and rinse water main road 73 and connect, and rinse water main road connects scavenging pump 82 outlets.

It is that the turbid liquid bath 86 of cleaning is connected dried mud main road 78 through cleaning turbid hydraulic control valve F5 with dried mud control valve F6 respectively with dried mud conveying device 87 that pipe-line system also is provided with a kind of purging system, and dried mud main road and the control valve F4 that is communicated with each filter element connect the mouth of pipe G2 on the lower flange.

In Figure 23, shown the embodiment 2 of the pipe-line system that the pliable and tough pipe squeezer of the present invention is advanced.

The further scheme of pipe-line system purging system; Purging system comprises scavenger circuit, cleaning device and purge control valve; Cleaning device comprises cleaning sink and scavenging pump; Cleaning sink connects scavenging pump, and this scavenger circuit is that compressed air system is connected compressed air main road 76 through air control main valve F7 with cleaning bypass control valve F8 respectively with scavenging pump 82 outlets.

The further scheme of pipe-line system purging system is between the cleaner liquid discharging mouth of pipe G3 of the lower flange of each filter element and cleaner liquid main 77, to be provided with cleaner liquid control valve F10.

In Figure 24, shown the embodiment 3 of the pipe-line system that pliable and tough pipe squeezer of the present invention is more senior.

The further scheme of pipe-line system is between wet mud

main road

74 and 80 outlets of raw material pumping installations, to be provided with filter sand device 88.

The further scheme of pipe-line system is that the upper flange at each filter element is provided with at least one pair of filter chamber middle feed secondary inlet G1a, G1b; The middle feed secondary inlet is through co-feed stop valve F1a, F1b and wet mud main road 74 and connect; Wet mud main road connects the raw material pumping installations, and every pair of filter chamber 43 middle feed secondary inlet are located at the left and right sides at filter chamber middle part respectively.

The further scheme of pipe-line system is that the dried mud conveying device 87 that dried mud main road 78 connects is booster pump 90, and booster pump is rotary-piston pump or reciprocating piston pump.

The further scheme of pipe-line system is to be provided with vavuum pump 89 in filtering liquid bath 85 outlet, utilizes porous disc core, cleaner liquid main road 77, compressed air main road with and air shut-off valve F7 form and vacuumize the loop.

Obviously, the relevant technologies characteristic among the various embodiment can reasonably be exchanged in the rights protection scope, combination and omission.

Claims

1. pliable and tough pipe squeezer that adopts fluid power squeezing and extrude the spoil disposal cake; Pliable and tough pipe squeezer mainly comprises raw material pumping installations, filter assemblies, pressure-bearing device, dried mud conveying device, filtrating discharge system, pipe-line system and control system, and comprehensively becomes the full-automatic Separation of Solid and Liquid integrated treatment of electromechanical integration complete set of equipments; Pressure-bearing device comprises and compresses assembly and bearing structure; Bearing structure comprises pressing plate (7), rack rail (3), frame (1) and bearing plate (2); It is characterized in that filter assemblies comprises a folded filter element (6); One folded filter element is arranged in parallel on the rack rail that is arranged on frame and can relatively moves along arranging fore-and-aft direction, and arranging fore-and-aft direction also is 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, the filter chamber, and the guide wheel of walking mechanism (4) is arranged on the upper flange left and right sides, guide wheel respectively with frame on rack rail engagement; Along the squeeze force direction, the flexible screen pipe unit of clamping such one folded filter element between the pressing plate of pressing device and bearing plate; Lower flange comprises deslagging outlet (G2) and filter chamber lower seal structure thereof; The screen pipe unit (6a) of filter element is hung under the upper flange, and lower flange is hung under the screen pipe unit; The vertical axis of the oval profile of the level cross-sectionn of the screen pipe unit of all filter elements all is parallel to each other, and this vertical axis and squeeze force direction are perpendicular; The screen pipe unit comprises the following elements of radial flexibility: two-layer at least tubulose filtering medium (abbreviation of tubular filtering medium) and connector, every layer tubulose filtering medium level cross-sectionn are that the vertical axis center line of oval profile overlaps and vertical with horizontal line; The inner filter chamber that forms of the tubulose filtering medium (48) of innermost layer; Every layer of tubulose filtering medium upper end is connected through hermetically-sealed construction on the filter chamber with upper flange and seals, and the lower end of the tubulose filtering medium together that is layering is connected with filter chamber lower seal structure also can open and close filter chamber (43), and the lower end connection deslagging of tubulose filtering medium exports (G2); Material inlet is communicated with stoste passage (G1) on the upper flange, and the stoste passage is communicated with filter chamber; Outermost tubulose filtering medium adopts rigid filaments braiding conveyer belt (42); Rigid filaments braiding conveyer belt surrounds the structure of the perpendicular wall of filter chamber of the radially pliable and tough vertical axial dimension fixed length of a tubulose; The rigid filaments braiding conveyer belt vertical upper axial end of tubulose is connected the lower end of upper flange, and this rigid filaments braiding conveyer belt forms a series of sieve apertures; Rigid filaments braiding conveyer belt (42) comprises muscles and bones and skeleton (54), and muscles and bones is the downward a series of bars (50) of wearing of long axis, and skeleton (54) is around the supporter of wearing bar; Per two adjacent skeletons (38) are worn bar (50) and are hinged together with same, and all of rigid filaments braiding conveyer belt are worn bar (50), and two ends and adjacent skeletal fixation be together up and down; Pipe-line system is the stoste import (G1) that is provided with of the upper flange at each filter element through charging stop valve (F3) with wet mud main road (74) and connect, and wet mud main road connects raw material pumping installations (80); The deslagging outlet (G2) that is provided with at the lower flange of each filter element is through deslagging stop valve (F4) and dried mud main road (78) and connect, and dried mud main road connects dried mud conveying device (87); The mouth of pipe (G3) that is provided with at the lower flange of each filter element also connects cleaner liquid and discharges main road (77).

2. employing fluid power according to claim 1 squeezes and extrudes the pliable and tough pipe squeezer of spoil disposal cake; It is characterized in that hermetically-sealed construction comprises upper flange main body (30), presses down ring flange (28) on the filter chamber of upper flange, cyclic spring seal (45) and centre wear bar (50a); A series of centres are worn bar and are inserted respectively downwards in the hole of skeleton (54) of rigid filaments braiding conveyer belt of outermost tubulose filtering medium, and the upper end of wearing bar is fixed on the edge of the oval profiled orifice of level of upper flange main body (30); The lower surface that presses down ring flange is fixed on the upper surface and the sealing of upper flange main body (30); Press down the conical pipe that the lower branch line (30a) of the lower branch line (28a) that stretches out below the ring flange and upper flange main body (30) contacts for mutual fit, clamping filter cloth (48) between two conical pipes sticks annular resilient seal part (45) in filter cloth one side.

3. employing fluid power according to claim 1 squeezing and extrude the pliable and tough pipe squeezer of spoil disposal cake is characterized in that, the filter chamber lower seal structure of lower flange comprise lower flange main body (44), on press ring flange (46) and cyclic spring seal (45); After a series of centres were worn bar (50a) and are passed down through the hole of skeleton (54) of rigid filaments braiding conveyer belt of outermost tubulose filtering medium (42) respectively, the lower end that bar is worn in the centre was fixed on the edge of the oval profiled orifice of level of lower flange main body (44); The upper surface of last pressure ring flange (46) is fixed on the lower surface and the sealing of lower flange main body; The conical pipe that the last arm (46a) that stretches out above the last pressure ring flange and the last arm (44a) of lower flange main body (44) contact for mutual fit; Clamping filter cloth (48) between two conical pipes sticks annular resilient seal part (45) in filter cloth one side.

4. according to claim 2 or the squeezing of 3 described employing fluid power with extrude the pliable and tough pipe squeezer of spoil disposal cake; It is characterized in that; Outside outermost tubulose filtering medium, coat tubulose closing membrane (26); The suspention of tubulose closing membrane is fixed under the upper flange main body (30); Be provided with the into mouth of pipe of cleaning fluid (G6) in the upper flange main body; The mouth of pipe is communicated with the ring-type filtering liquid chamber between outermost tubulose filtering medium and the tubulose closing membrane; Be provided with level filtrating in lower flange main body (44) and compile dish (53), filtrating sees through the tubulose filtering medium; Tubulose closing membrane bottom discharge opening (27); Level filtrating is compiled dish and is discharged to filtrate (liquid (G3a).

5. employing fluid power according to claim 1 squeezes and extrudes the pliable and tough pipe squeezer of spoil disposal cake; It is characterized in that; In filter chamber, be provided with at least one porous disc (36), air distribution tank (39a) and compile water pot (39b), each porous disc comprises that three ply board shape filter medium, jam plate bar (56), suspension assembly, filter cloth are tightened mechanism, bound edge angle bead (57), main sewer mouth (G3) and air and got into total mouth of pipe (G5) at least; The jam plate bar is provided in a side of the rigidity horizontal stripe on porous disc top, and the bound edge angle bead is provided in a side of the horizontal stripe of porous disc bottom; The tabular filtering medium (42a) of innermost layer is uniformly distributed with slit and the inner bed course that is uniformly distributed with the space formation pervious bed of rigidity for the surface; The tabular filtering medium upper end of innermost layer connects the jam plate bar, and the lower end of the tabular filtering medium of innermost layer constitutes a porous disc core assembly after connecting the bound edge angle bead, and the space of the tabular filtering medium of innermost layer is communicated with the drainage duct mouth (60) and the air induction conduit mouth (58) of cleaner liquid; The air induction conduit mouth (58) of each porous disc is arranged on the highest point of porous disc core assembly, and this mouth of pipe is through flexible pipe (38a) and connect air distribution tank lower nozzle (38b); The drainage duct mouth (60) of each porous disc is arranged on the lowest part of porous disc core assembly, and this mouth of pipe compiles water pot upper orifice (37b) through flexible pipe (37a) and connection; Outermost tabular filtering medium (48) parcel porous disc core assembly constitutes the porous disc main body; Air distribution tank top main mouth (40a) gets into total mouth of pipe (G5) through the air that flexible pipe connects upper flange; Compile the total mouth of pipe in water pot bottom (40b) connects lower flange through flexible pipe main sewer mouth (G3); Bear the squeeze force direction along porous disc; The front and back position limiting structure that porous disc is provided with; The front and back position limiting structure is that tabular filtering medium (42a) is gone up the elastomeric pad (34) that fixedly is uniformly distributed with in the centre; The center line of the elastomeric pad of the correspondence position of every every row of every row of porous disc overlaps before and after the squeezing direction, and elastomeric pad can be plastic cement pad or tower compression spring (34b).

6. employing fluid power according to claim 1 squeezes and extrudes the pliable and tough pipe squeezer of spoil disposal cake, it is characterized in that, the assembly that compresses of pressure-bearing device is to adopt the adjusting screw retaining mechanism; The adjusting screw retaining mechanism comprises; Along squeeze force direction left-right symmetric with many rows multiple row adjusting screw of arranging up and down; Every row, every row are provided with two adjusting screws (9) at least; Every row, every row are provided with two adjusting screws (9) at least, and the adjustable nut (8) that each adjusting screw (9) is gone up engagement is fixed on the crossbeam (1a) of frame (1); Pressing plate (7) lean respectively about on the front end face of the adjusting screw (9) arranged, and before and after rack rail (3) is gone up, move through the guide wheel that the pressing plate left and right sides is provided with.

7. employing fluid power according to claim 1 squeezes and extrudes the pliable and tough pipe squeezer of spoil disposal cake, it is characterized in that, the assembly that compresses of pressure-bearing device is to adopt connecting rod retaining mechanism and coupling mechanism force generating mechanism; The connecting rod retaining mechanism comprises upper and lower front rod (19a, 19b), upper and lower back link (21a, 21b), upper and lower dynamic link (14a, 14b), power ear seat board (22a), movable stand (22) and jointed shaft (18); One end of the upper and lower front rod (19a, 19b) that is symmetrically arranged along the squeeze force direction is hinged through ear seat and pressing plate (7); One end of the upper and lower back link that is symmetrically arranged (21a, 21b) is hinged through ear seat (25) with upper and lower moving frame respectively; Upper and lower moving frame lean respectively about on the adjusting screw (9) arranged; And can be respectively move at rack rail (3,1b), before and after going up; Every row, every row are provided with two adjusting screws (9) at least, and the adjustable nut (8) that each adjusting screw (9) is gone up engagement is fixed on the crossbeam (1a) of frame (1); The other end of the other end of the upper and lower front rod that is symmetrically arranged (19a, 19b), the upper and lower back link (21a, 21b) that is symmetrically arranged along the squeeze force direction is hinged with same hinged major axis (20) with an end of the upper and lower dynamic link that is symmetrically arranged (14a, 14b) respectively; The other end of upper and lower dynamic link (14a, 14b) is hinged with left and right power ear seat board (22a) respectively; The output shaft of coupling mechanism force generating mechanism connects with screw rod (16) one ends through shaft coupling, and at least one end of screw rod is provided with thrust and radial axle bearing (17); Two screw rods that are parallel to each other (16) that the coupling mechanism force generating mechanism drives are symmetricly set on the both sides of filter element (6) respectively; Be connected on the power ear seat board (22a) separately with the nut (23) of the driving of screw rod (16) engagement; Power ear seat board is arranged on movable stand (22) both sides; The squeezing direction of motion moves back and forth the guide wheel (4) at movable stand (22) two ends in lower bearing bracket guide rail (1b) upper edge, and lower bearing bracket guide rail (1b) is fixed on the frame (1); The screen pipe unit (6a) of clamping one folded filter element between pressing plate (7) and last bearing plate (2); Bearing plate (5) in the middle of between the screen pipe unit of two filter elements, being provided with; Between pressing plate and middle bearing plate; Be equipped with limit spending frame between middle bearing plate and the middle bearing plate; Detachable latch (72) has been set up in the limit spending, and the spacing middle bearing plate of adjacent need is provided with the collision block (72a) that cooperates with it; Last bearing plate (2) is fixed on frame (1) one end, and the squeezing direction of motion moves back and forth the guide wheel that pressing plate, middle bearing plate and a folded filter element are provided with through the left and right sides respectively in the rack rail upper edge; The nut that the coupling mechanism force generating mechanism drives is known nut or ball nut, and the screw rod of driving is known screw rod or ball screw.

8. employing fluid power according to claim 1 squeezes and extrudes the pliable and tough pipe squeezer of spoil disposal cake; It is characterized in that; The control system adopts filter chamber squeezing cake thickness testing agency; Bearing plate (5) in the middle of filter chamber squeezing cake thickness testing agency comprises; Suspension guide wheel (10); Stroke sensor (12) and sensor stand (13); The middle bearing plate left and right sides is provided with the suspension guide wheel; Bearing plate in the middle of the clamping between adjacent two screen pipe unit (6a); This guide wheel respectively with frame on rack rail engagement, middle bearing plate can the squeezing direction of motion move back and forth in the rack rail upper edge; Be provided with sensor stand in middle bearing plate both sides, on the bearing plate, the other end that the sensor stand cantilever stretches out is installed stroke sensor in the middle of an end of sensor stand is fixed on.

9. employing fluid power according to claim 1 squeezes and extrudes the pliable and tough pipe squeezer of spoil disposal cake; It is characterized in that; Described pipe-line system is the mouth of pipe (G5) that is provided with of the upper flange at each filter element through air shut-off valve (F9) with compressed air main road (76) and connect; Compressed air main road connects compressed air reservoir (89) outlet; Compressed air reservoir connects compressed air pump (84); Perhaps cleaner liquid main road (77) connect filtering liquid bath (85), and the filtering liquid bath connects vavuum pump (89).

10. employing fluid power according to claim 1 squeezes and extrudes the pliable and tough pipe squeezer of spoil disposal cake; It is characterized in that; Described pipe-line system is that the upper flange at each filter element is provided with at least one filter chamber middle feed secondary inlet (G1a, G1b); The middle feed secondary inlet is through co-feed stop valve (F1a, F1b) and wet mud main road (74) and connect; Wet mud main road connects the raw material pumping installations, and each filter chamber (43) middle feed secondary inlet is located at the middle part of filter chamber respectively.