CN104817246B - Ultrahigh-pressure deep dehydration method for sewage sludge - Google Patents
Ultrahigh-pressure deep dehydration method for sewage sludge Download PDFInfo
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- CN104817246B CN104817246B CN201510133114.8A CN201510133114A CN104817246B CN 104817246 B CN104817246 B CN 104817246B CN 201510133114 A CN201510133114 A CN 201510133114A CN 104817246 B CN104817246 B CN 104817246B
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Abstract
The invention discloses an ultrahigh-pressure deep dehydration method for sewage sludge. According to the method, preliminarily dehydrated sludge with high water content is delivered into a press filtration chamber, a double-toggle link mechanism acts on a squeezing plate under the driving of a power mechanism, and the sludge undergoes deep dehydration in the press filtration chamber; a sludge compression characteristic curve matches with the kinetic characteristic curve of the double-toggle link mechanism; the sludge has great compressional displacement under the action of small force in the beginning phase of compression and is increasingly compacted with progress of compaction of the sludge, so the sludge only has small compressional displacement under the action of large force as porosity of the sludge is increasingly smaller; the characteristics of the double-toggle link mechanism accord with the above-mentioned characteristics of the compression of the sludge; and since pressure of the power mechanism is increased in the later phase of press filtration according to desired corresponding pressure changes of the power mechanism and the amplification effect and self-locking performance of the double-toggle link mechanism are cooperatively used, immense pressure is formed, and usage of only a small hydraulic pressure can realize ultrahigh-pressure press filtration of the sludge to allow more water to be squeezed and sludge with low water content to be obtained.
Description
Technical field
The present invention relates to sewage sludge process field, specifically a kind of super-pressure sewage sludge deep dehydration method.
Background technology
Mud is the product after sewage disposal, and a large amount of mud producing after current sewage disposal need to process further, takes off
Water is the important step of Treatment of Sludge, its objective is to remove most of moisture in mud, so that solids level is enriched with, is greatly decreased
Sludge volume, to reduce investment outlay, improves sludge calorific value and energy saving, and the minimizing for mud and subsequently disposal have important
Meaning.Dehydration generally can be divided into mechanical dehydration and mummification dehydration, and mummification dehydration is by consuming substantial amounts of heat by the water in mud
Divide evaporation thus realizing the deep dehydration of mud, mechanical dehydration is dewatering type most effective, that energy consumption is minimum, currently employed conditioning
And mechanical means carries out deep dehydration and moisture content generally can be made to reach 80%-60% to mud.
Mechanical dehydration mode and equipment mainly have belt type filter dehydration, centrifugal dehydration, plate compression dehydration three major types, belt
Filtering means dehydration passes through flocculation, gravity dehydration, wedge shape dehydration, dehydration technology, high press-dehydrating, and the extruding between band is realized continuity and taken off
Water, the filter cake moisture content after dehydration is about in 75%-80%.Centrifugal dehydration is the density contrast using solid-liquid two-phase, is revolved by high speed
The centrifugal acceleration turning makes solid phase and liquid phase separation, reaches centrifugal sedimentation, using centrifugal dehydration moisture content of the cake typically 80%
Left and right.Mud is extruded by plate compression dehydration by screw pump, and moisture is by filter cloth, and mud is in sheet frame, squeezing
, typically in 1.6Mpa, the moisture percentage in sewage sludge of diaphragm plate frame filter press dehydration is typically 60% about for pressure.Dehydration equipment also has dish
Spiral shell dewaterer, steel belt machine, dish spiral shell dewaterer utilizes the filter space being formed between rotating ring and stationary ring to realize dehydration, but is bad at
The dehydration of the mud that grain is big, hardness is big, moisture percentage in sewage sludge is between 75%-80%.
Superelevation compression elasticity squeezer is that a kind of pressure is bigger, filtering equipment in hgher efficiency and solid-liquid separating equipment, entirely
Process is broadly divided into the charging -- Four processes such as elasticity squeezing -- connecing liquid -- discharging.It is fed filtration first, by feed pump by thing
Material is transported to filter chamber, and the press filtration by feed pump while charging carries out separation of solid and liquid, once filters；Elasticity squeezing, equipment
One end fix, the other end by hydraulic jack apply ambient pressure, by elastic force-transmitting device (spring) compress chamber space
Squeezed, i.e. twice pressing；Filtrate is discharged, the filter that will be leached in fed filtration and elastic expressing process by mobile liquid dish
Liquid is discharged, and is that space is conceded in next step discharging；Automatic pulling plate, automatic pulling plate mechanism passes through the transmission on transmission and drawing device
Chain, filter cake Automatic-falling, transported by the transporting equipment of bottom, capital equipment organic frame and control system, filter plate and filter cloth system,
Automatic pulling plate mechanism, Jie Ye mechanism., directly from the pressure of hydraulic jack, for directly squeezing, squeeze pressure can for this equipment pressure
Reach the 5-7MPa single batch work period for 1.0～1.5h, operating efficiency is 3-4 times of diaphragm filter press.But still suffer from energy consumption
Big problem.
Content of the invention
In view of this, the present invention be directed to moisture percentage in sewage sludge after the process that above-mentioned prior art exists high, will to hydraulic power
Seek problem high, that energy consumption is big, there is provided a kind of energy consumption is low, can achieve pressure be amplified to super-pressure (squeeze pressure is more than 10MPa),
The low super-pressure sewage sludge deep dehydration method of moisture percentage in sewage sludge.
The technical solution of the present invention is to provide a kind of super-pressure sewage sludge deep dehydration method of following steps,
Comprise the following steps：
1), enter into storage bin through the mud after preliminary hydro-extraction, open charging aperture, and press filtration chamber is pushed into by storage bin
Interior, keep feed inlet and outlet to be closed thinking that press filtration is prepared；
2), press filtration early stage：Actuating unit is started working, and drives its push rod to move downward, to drive Double crank link mechanism
Motion, Double crank link mechanism urges stripper plate moves downward extruding mud；
3), the press filtration later stage：By the supercharging to actuating unit, the dynamics of push rod is greatly improved, in conjunction with Double crank link machine
The effect of structure, the further high-pressure extrusion to mud；When stripper plate is pushed to extreme position, crank connecting rod mechanism is in " stretching "
State, keeps the press filtration regular hour；
4), after, dehydration finishes, open feed inlet and outlet, the mud cake in press filtration chamber is pushed out.
Using above structure, the present invention compared with prior art, has advantages below：Higher through preliminary hydro-extraction moisture content
Mud be fed device and send into press filtration chamber, Double crank link mechanism is driven by actuating unit, and acts on stripper plate, make in pressure
By deep dehydration in filter chamber, mud compression property curve is coincide with the kinetic characteristic curve of Double crank link mechanism, i.e. compression is opened
Stage beginning, with the carrying out of mud compression, mud was pressed it is only necessary to mud just can be compressed larger displacement by relatively small power
Contract more and more real, the void ratio of mud is less and less, mud compression needs very big power could move the displacement of very little, and double
Crank connecting rod mechanism characteristicses are just consistent with this；Meanwhile, make the pressure respective change that actuating unit produces as needed, in press filtration
Later stage increases the pressure of actuating unit, and the amplification in conjunction with Double crank link mechanism power and self-locking property can be formed in press filtration chamber
Huge pressure, hydraulic system only needs to less hydraulic pressure (in the case that actuating unit adopts hydraulic system) and achieves that to dirt
The super-pressure press filtration of mud, more moisture are squeezed out, thus obtaining the low mud of moisture content.
Preferably, described dewatering is based on super-pressure dehydration device, described superelevation press-dehydrating dress include cylinder,
Storage bin, it is arranged on the upper mounted plate on cylinder top and is arranged on the bottom plate of cylinder body bottom, described dehydration device is also wrapped
Include Double crank link mechanism, stripper plate and the actuating unit driving Double crank link mechanism, described Double crank link mechanism position
In cylinder, and it is fixedly mounted on upper mounted plate, the front end of described Double crank link mechanism is connected with stripper plate, double-toggle is even
Linkage is connected with actuating unit and realizes flexible, shape between described stripper plate and bottom plate under the drive of actuating unit
Become press filtration chamber, described storage bin is positioned at press filtration chamber side and coupled logical；Described bottom plate is provided with voltage supply filter chamber
The drainage mechanism that interior moisture is discharged.
Preferably, described actuating unit includes stroke oil cylinder, operating cylinder and pressurizing cylinder, described operating cylinder
Push rod be connected with Double crank link mechanism, the rear end of operating cylinder is connected with stroke oil cylinder and pressurizing cylinder or connects；?
The early stage of Double crank link mechanism force extruding, drives operating cylinder by stroke oil cylinder, and pushes ahead Double crank link mechanism,
In the later stage of extruding, then pressurizing cylinder is switched to by stroke oil cylinder, active force is improved by pressurizing cylinder, collaborative Double crank link machine
Structure, makees further high-pressure extrusion to mud.Using this structure, in the last stage of mud extruding, the mud compression because power is less
Displacement is larger, can achieve mud extruding using stroke oil cylinder and operating cylinder, and the rear stage in extruding, due to the position of mud
The less and required power of shifting is larger, and using pressurizing cylinder and operating cylinder work in combination, achievable displacement is less and power is larger；
Using the amplification of the pressurization of pressurizing cylinder and the power of Double crank link mechanism, both " dual " effects can achieve dirt
The super-pressure press filtration of mud, more moisture are extruded.
Preferably, described drainage mechanism includes offering the multiple logical aperture of shunting and liquid of supplying water on bottom plate
Body runner, bottom plate upper surface is wrapped in filter cloth, and described fluid passage one end is connected with collector tube, the other end and air inlet pipe
It is connected, described air inlet pipe is connected with high-pressure air source.Because filter cloth used after a period of time, mud granule is easily distributed in filter cloth
On, block mesh, cause dewatering efficiency to reduce, using air inlet pipe, high-pressure air source is connected with bottom plate and filter cloth, using one
After fixing time, open source of the gas and controlled valve, the mud that filter cloth blocks is rinsed well by gases at high pressure, without clear with water
Wash, cleaning filter cloth is very convenient.
Preferably, offering charging aperture and discharging opening respectively in the both sides of cylinder, be provided with described charging aperture into
Material flashboard, described discharge outlet is provided with discharging flashboard, and input and output material flashboard is driven by flashboard pusher cylinder, and described flashboard pushes away
Cylinder of taking offence is corresponded with input and output material flashboard.Mud enters press filtration chamber from charging aperture, and during press filtration, input and output material flashboard is turned off, and treats
After press filtration terminates, open input and output material flashboard, the mud after processing is released from discharging opening.
Preferably, the inner bottom surface of described feed inlet and outlet is contour with the inner bottom surface in press filtration chamber, and in feed inlet and outlet
Corresponding flashboard slot is offered on bottom surface, is provided with spring in described flashboard slot and fills out cover plate, described cover plate fixation of filling out sets
Put the upper end in spring.It is to can achieve that flashboard is inserted into flashboard slot using this structure, meanwhile, fill out cover plate when flashboard is opened again permissible
Under the action of the spring flashboard slot is closed, prevent mud from entering into next task of impact flashboard in flashboard slot.
Preferably, being provided with mud layer dredging structure on described upper mounted plate, described mud layer dredging structure is to downward
Extend in press filtration chamber.After being extruded due to mud, its void ratio diminishes, and easily blocks the circulation of water, causes moisture to be difficult to discharge, especially
It is under high pressure press filtration, and the space blocking of mud is even more serious, forms the runner of water in sludge blanket using mud layer dredging structure,
It is easy to water to discharge.
Preferably, described mud layer dredging structure is hollow needle structure, offer multiple through holes thereon, and in mud
The surface of layer dredging structure is covered with a metafiltration cloth.The blocking of mud layer dredging structure so can be prevented.
Preferably, described upper mounted plate is arranged in cylinder by many pull bars, described pull bar is near upper fixation
It is helicitic texture at plate, described upper mounted plate is provided with adjusting nut, upper mounted plate be can adjust by adjusting nut
Position.So it is adapted to the treating capacity of different mud it is ensured that " toggle link " of Double crank link mechanism stretches, reach maximum
The amplification effect of power and lock jail, when mud handling capacity increases, adjusting nut, make upper mounted plate be moved rearwards by a certain distance,
When mud handling capacity reduces, adjusting nut, make upper mounted plate move forward a certain distance.
Brief description
Fig. 1 is the structural representation of super-pressure sewage sludge deep dehydrator；
As illustrated, 1, cylinder, 2, storage bin, 3, upper mounted plate, 4, bottom plate, 5, Double crank link mechanism, 5-1,
Long toggle link, 5-2, little toggle link, 5-3, short toggle link, 5-4, crosshead, 5-5, side link, 6, stripper plate, 7, press filtration chamber, 8, stroke oil
Cylinder, 9, operating cylinder, 9-1, push rod, 10, pressurizing cylinder, 10-1, hydraulic pump, 10-2, magnetic valve, 10-3, flow speed control valve, 11, little
Hole, 12, flow channel for liquids, 13, filter cloth, 14, collector tube, 15, air inlet pipe, 16, high-pressure air source, 17, charging aperture, 17-1, charging lock
Plate, 18, discharging opening, 18-1, discharging flashboard, 19, flashboard pusher cylinder, 20, flashboard slot, 20-1, spring, 20-2, fill out cover plate,
21st, mud layer dredging structure, 22, pull bar, 23, fixed mount, 24, adjusting nut, 25, check valve, 26, controlled valve, 27, seat retreats
Cylinder, 28, feeding cylinder, 29, delivery sheet.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The present invention covers any replacement made in the spirit and scope of the present invention, modification, equivalent method and scheme.For
Make the public that the present invention is had thoroughly to understand, in present invention below preferred embodiment, concrete details is described in detail, and
Description without these details can also understand the present invention completely for a person skilled in the art.Additionally, the accompanying drawing of the present invention
In for the needs illustrated, be not accurately drawn to scale completely, here is explained.
As shown in figure 1, a kind of super-pressure sewage sludge deep dehydrator, including cylinder 1, storage bin 2, it is arranged on cylinder
The upper mounted plate 3 on 1 top and the bottom plate 4 being arranged on cylinder 1 bottom, described dehydration device also includes Double crank link machine
Structure 5, stripper plate 6 and the actuating unit driving Double crank link mechanism 5, described Double crank link mechanism 5 is located in cylinder 1,
And be fixedly mounted on upper mounted plate 3, the front end of described Double crank link mechanism 5 is connected with stripper plate 6, Double crank link mechanism
5 are connected with actuating unit and realize flexible under the drive of actuating unit, are formed between described stripper plate 6 and bottom plate 4
Press filtration chamber 7, described storage bin 2 is positioned at press filtration chamber 7 side and coupled logical；Described bottom plate 4 is provided with and supplies press filtration
The drainage mechanism that in chamber 7, moisture is discharged.
The cross section of cylinder 1 can be rectangle or cylindrical shape.Double crank link mechanism 5 includes long toggle link 5-1, little toggle link 5-
2nd, short toggle link 5-3, crosshead 5-4 and side link 5-5, long toggle link 5-1, little toggle link 5-2, short toggle link 5-3, crosshead 5-4 and company
The size of hack lever 5-5 can be designed according to the amplification situation of the stroke of stripper plate 6 and power, and side link 5-5 is fixedly installed on
On upper mounted plate 3 and stripper plate 6, it is arranged on side link 5-5 on upper mounted plate 3 and stripper plate 6, short toggle link 5-3, little toggle link 5-
2nd, long toggle link 5-1 is connected by bearing pin, and described crosshead 5-4 is fixedly connected by bearing pin with little toggle link 5-2, and and engine
Push rod on structure connects, and when stripper plate 6 is expressed to bottom, the multiplication factor of the power of this Double crank link mechanism can reach 40
About times, that is, the push rod of actuating unit transfers out the power of 1 newton, permissible at stripper plate after Double crank link mechanism amplifies
Reach 40 newton.
Described actuating unit includes stroke oil cylinder 8, operating cylinder 9 and pressurizing cylinder 10, the pushing away of described operating cylinder 9
Bar 9-1 is connected with Double crank link mechanism, and the rear end of operating cylinder 9 is connected with stroke oil cylinder 8 and pressurizing cylinder 10 or connects；
In the early stage of Double crank link mechanism force extruding, operating cylinder is driven by stroke oil cylinder 8, and pushes ahead Double crank link machine
Structure, in the later stage of extruding, then switches to pressurizing cylinder 10 by stroke oil cylinder 8, improves active force by pressurizing cylinder 10, collaborative hyperbolic
Elbow linkage 5, makees further high-pressure extrusion to mud.Actuating unit also including hydraulic pump 10-1, magnetic valve 10-2 and
Flow speed control valve 10-3, stroke oil cylinder 8 is connected with magnetic valve 10-2 and flow speed control valve 10-3, and pressurizing cylinder 10 is connected with magnetic valve 10-2
Connect, the push rod 9-1 of operating cylinder 9 leading portion is connected with crosshead 5-4 of Double crank link mechanism 5.The increase of pressurizing cylinder times
Between 1-20, according to required boost conditions, hydraulic pump can also be adjusted to high-pressure air source to number, described stroke oil cylinder
It is adjusted to stroke cylinder accordingly.
Described drainage mechanism includes offering the multiple logical aperture 11 of shunting and flow channel for liquids of supplying water on bottom plate 4
12, bottom plate 4 upper surface is wrapped in filter cloth 13, and described fluid passage 12 one end is connected with collector tube 14, the other end with enter
Tracheae 15 is connected, and described air inlet pipe 15 is connected with high-pressure air source 16.Fluid passage 12 slopes slightly downward in collector tube 14 direction,
It is easy to moisture smoothly to discharge, controlled valve 26 and check valve 25 are provided with air inlet pipe 15, check valve 16 ensures press filtration out
Moisture can only flow to collector tube 14, and can not flow in air inlet pipe 15, air inlet pipe 15 is connected with high-pressure air source 16, in collector tube
It is also equipped with controlled valve on 14, have the controlled valve that press filtration liquid flow out is sent as an envoy on collector tube to open, in air inlet pipe 15
Controlled valve close, when needing using gases at high pressure, aperture 11 and filter cloth 13 to be rinsed, then the switch on collector tube
Valve closing, the controlled valve in air inlet pipe 15 is also opened.
Offer charging aperture 17 and discharging opening 18 respectively in the both sides of cylinder 1, at described charging aperture 17, be provided with charging
Flashboard 17-1, is provided with discharging flashboard 18-1 at described discharging opening 18, input and output material flashboard is driven by flashboard pusher cylinder 19, institute
The flashboard pusher cylinder 19 stated and input and output material flashboard correspond.Described dehydration device also includes interconnective seat advance and retreat gas
Cylinder 27 and feeding cylinder 28, described feeding cylinder 28 front end is connected with delivery sheet 29, and delivery sheet 29 is located in storage bin, material
After entering storage bin, drive delivery sheet 29 that material is advanced press filtration chamber by delivery sheet 29.Although adopting cylinder real in the present embodiment
Apply, but also can use seat advance and retreat oil cylinder and feeding oil cylinder, being implemented using cylinder then can be with flashboard pusher cylinder 19 common high voltage source of the gas
16.
The inner bottom surface of described feed inlet and outlet is contour with the inner bottom surface in press filtration chamber 7, and opens on the inner bottom surface of feed inlet and outlet
It is provided with corresponding flashboard slot 20, be provided with spring 20-1 in described flashboard slot 20 and fill out cover plate 20-2, described fills out cover plate 20-
2 upper ends being fixedly installed on spring 20-1.When telescopic spring is to free position, filler plate is just neat topmost with flashboard slot
Flat.
Mud layer dredging structure 21 is provided with described upper mounted plate 3, described mud layer dredging structure 21 extends downward
In press filtration chamber 7.
Described mud layer dredging structure 21 is hollow needle structure, offers multiple through holes thereon, and in mud layer dredging
The surface of structure is covered with a metafiltration cloth.Mud layer dredging structure 21 is threadedly attached on stripper plate 6, can adjust in press filtration chamber
Collapsing length in 7, clear for view, do not show through hole and corresponding filter cloth in Fig. 1, but ordinary skill people
Member is all understood that specific embodiment.
Described upper mounted plate 3 installs (by fixed mount 23) in cylinder 1 by many pull bars 22, described pull bar 22
It is helicitic texture at upper mounted plate 3, described upper mounted plate 3 is provided with adjusting nut 24, by adjusting nut 24
The position of adjustable upper mounted plate 3.
Deep dehydration method for sludge flow process is：
2), enter into storage bin through the mud after preliminary hydro-extraction, open charging aperture, and press filtration chamber is pushed into by storage bin
Interior, keep feed inlet and outlet to be closed thinking that press filtration is prepared；
2), press filtration early stage：Actuating unit is started working, and drives its push rod to move downward, to drive Double crank link mechanism
Motion, Double crank link mechanism urges stripper plate moves downward extruding mud；
3), the press filtration later stage：By the supercharging to actuating unit, the dynamics of push rod is greatly improved, in conjunction with Double crank link machine
The effect of structure, the further high-pressure extrusion to mud；When stripper plate is pushed to extreme position, crank connecting rod mechanism is in " stretching "
State, keeps the press filtration regular hour；
4), after, dehydration finishes, open feed inlet and outlet, the mud cake in press filtration chamber is pushed out.
Concrete operating principle is as follows：
Enter in storage bin through the mud of preliminary hydro-extraction moisture content higher (80% about), through tiring out after a while
After long-pending, feeding cylinder promotes delivery sheet that the mud in storage bin is pushed to press filtration chamber, and now, feeding gate plate is opened, discharging lock
Plate is closed.After the mud in storage bin is all introduced into press filtration chamber, feeding gate plate is also switched off, stroke oil cylinder is started working,
Stroke oil cylinder pushes the work forward the push rod of oil cylinder, and push rod promotes the crosshead of Double crank link mechanism, and the power of crosshead passes through short elbow
Bar, little toggle link, long toggle link, side link transmit the force on stripper plate, in the early stage of press filtration, because the void ratio of mud is larger,
Power required for compression is also less, but compression speed is very fast, and now crushing failure at high speed mainly plays in Double crank link mechanism
Effect, extruding force is less.With the carrying out of press filtration, enter the press filtration later stage, it is more and more real that mud is compressed, and void ratio diminishes,
Now required compression stress is increasing, and compression displacement is less and less, and the enlarge-effect of the power of Double crank link mechanism starts
Manifest, that is, only need to the certain power of push rod, after Double crank link mechanism amplifies, form huge extruding force at stripper plate
Press filtration is carried out to mud.Due to need bigger power could the further extruding to mud, now stroke oil cylinder can be switched to
Pressurizing cylinder, by the pressurization of pressurizing cylinder, the initial forces acting on push rod are also greatly improved, in conjunction with double-toggle
The enlarge-effect of the power of linkage, under the dual amplification of pressurizing cylinder and the power of crank connecting rod mechanism acts on, stripper plate can
There is provided enough power that mud is extruded.
" stretch " under state in the toggle of crank connecting rod mechanism, now the enlarge-effect of crank connecting rod mechanism power is maximum, dirty
Pressure suffered by mud is also maximum, now carries out pressurize certain time, moisture in mud is constantly extruded, until not having moisture
Till extrusion, press filtration stops, and charging flashboard and discharging flashboard are opened simultaneously, and seat advance and retreat oil cylinder and feeding oil cylinder work simultaneously, seat
Advance and retreat oil cylinder pushing feeding oil cylinder integrally advances, and feeding oil cylinder also works simultaneously, and the mud cake of compacting is pushed out discharge.Press filtration
The moisture going out enters into fluid passage by the aperture on filter cloth, bottom plate, and under unidirectional valve action, this liquid can only be from collection
The unidirectional discharge of liquid pipe.
After running certain time operation, if mud granule is by the aperture clogs of the mesh of filter cloth or bottom plate, can beat
Open high-pressure air source and the controlled valve of air inlet pipe opened, controlled valve at collector tube is closed, gases at high pressure by filter cloth and
On bottom plate aperture, the mud granule of blocking is rinsed well.
When the sludge quantity change processing, if the mud entering into press filtration chamber increases, final mud cake after extruding
Thickness ness will increase, and extruding Board position will relatively upper move, if now upper mounted plate is in original position, extrudes
The distance between plate and upper mounted plate shorten, and that is, crank connecting rod mechanism is in " suppressing song " state it is impossible to " stretching " then can serious shadow
Ring the enlarge-effect of the power of crank connecting rod mechanism.So, now by adjusting nut effect by upper mounted plate online mobile phase
The distance answered, it is ensured that the distance between stripper plate and upper mounted plate remain rational distance, can make crank connecting rod mechanism
It is in the state of " stretching " so that crank connecting rod mechanism reaches the enlarge-effect of optimal power.
Below only preferred embodiments of the present invention are described, but are not to be construed as limiting the scope of the invention.This
Invention is not only limited to above example, and its concrete structure allows to change.In a word, all guarantors in independent claims of the present invention
The various change made in the range of shield is all within the scope of the present invention.
Claims (7)
1. a kind of super-pressure sewage sludge deep dehydration method, comprises the following steps：
1), enter into storage bin through the mud after preliminary hydro-extraction, open charging aperture, and be pushed in press filtration chamber by storage bin, protect
Hold feed inlet and outlet to be closed thinking that press filtration is prepared；
2), press filtration early stage：Actuating unit is started working, and drives its push rod to move downward, to drive Double crank link mechanism kinematic,
Double crank link mechanism urges stripper plate moves downward extruding mud；
3), the press filtration later stage：By the supercharging to actuating unit, the dynamics of push rod is greatly improved, in conjunction with Double crank link mechanism
Effect, the further high-pressure extrusion to mud；When stripper plate is pushed to extreme position, crank connecting rod mechanism is in " stretching " shape
State, keeps the press filtration regular hour；
4), after, dehydration finishes, open feed inlet and outlet, the mud cake in press filtration chamber is pushed out；
Described super-pressure sewage sludge deep dehydration method is based on super-pressure sewage sludge deep dehydrator, described superelevation
Pressure sewage sludge deep dehydrator include cylinder (1), storage bin (2), be arranged on cylinder (1) top upper mounted plate (3) and
Be arranged on the bottom plate (4) of cylinder (1) bottom it is characterised in that：Described dehydration device also includes Double crank link mechanism
(5), stripper plate (6) and the actuating unit driving Double crank link mechanism (5), described Double crank link mechanism (5) is located at cylinder
In body (1), and it is fixedly mounted on upper mounted plate (3), the front end of described Double crank link mechanism (5) is connected with stripper plate (6),
Double crank link mechanism (5) is connected with actuating unit and realizes flexible under the drive of actuating unit, described stripper plate (6) with
Form press filtration chamber (7), described storage bin (2) is positioned at press filtration chamber (7) side and coupled logical between bottom plate (4)；Institute
The bottom plate (4) stated is provided with the drainage mechanism of voltage supply filter chamber (7) interior moisture discharge；
Described actuating unit includes stroke oil cylinder (8), operating cylinder (9) and pressurizing cylinder (10), described operating cylinder (9)
Push rod (9-1) be connected with Double crank link mechanism, the rear end of operating cylinder (9) and stroke oil cylinder (8) and pressurizing cylinder (10)
It is connected or connect；In the early stage of Double crank link mechanism force extruding, operating cylinder is driven by stroke oil cylinder (8), and forward
Propulsion Double crank link mechanism, in the later stage of extruding, then switches to pressurizing cylinder (10) by stroke oil cylinder (8), by pressurizing cylinder
(10) improve active force, collaborative Double crank link mechanism (5), mud is made with further high-pressure extrusion.
2. super-pressure sewage sludge deep dehydration method according to claim 1 it is characterised in that：Described drainage mechanism
Shunt logical aperture (11) and flow channel for liquids (12) including multiple water supply is offered on bottom plate (4), on bottom plate (4)
Surface is wrapped in filter cloth (13), and described flow channel for liquids (12) one end is connected with collector tube (14), the other end and air inlet pipe (15)
It is connected, described air inlet pipe (15) is connected with high-pressure air source (16).
3. super-pressure sewage sludge deep dehydration method according to claim 1 it is characterised in that：In cylinder (1) two
Side offers charging aperture (17) and discharging opening (18) respectively, and described charging aperture (17) place is provided with charging flashboard (17-1), institute
Discharging opening (18) place stating is provided with discharging flashboard (18-1), and input and output material flashboard is driven by flashboard pusher cylinder (19), described
Flashboard pusher cylinder (19) is corresponded with input and output material flashboard.
4. super-pressure sewage sludge deep dehydration method according to claim 3 it is characterised in that：Described charging aperture
(17) and discharging opening (18) inner bottom surface contour with the inner bottom surface of press filtration chamber (7), and in charging aperture (17) and discharging opening (18)
Corresponding flashboard slot (20) is offered on inner bottom surface, is provided with spring (20-1) in described flashboard slot (20) and fills out cover plate (20-
2), described fill out the upper end that cover plate (20-2) is fixedly installed on spring (20-1).
5. super-pressure sewage sludge deep dehydration method according to claim 1 it is characterised in that：Described stripper plate
(6) mud layer dredging structure (21) is installed on, described mud layer dredging structure (21) extends downward in press filtration chamber (7).
6. super-pressure sewage sludge deep dehydration method according to claim 5 it is characterised in that：Described mud layer dredging
Structure (21) is hollow needle structure, offers multiple through holes thereon, and is covered with one layer on the surface of mud layer dredging structure
Filter cloth.
7. super-pressure sewage sludge deep dehydration method according to claim 1 it is characterised in that：Described upper mounted plate
(3) pass through many pull bars (22) to be arranged in cylinder (1), described pull bar (22) is helicitic texture near upper mounted plate (3) place,
Described upper mounted plate (3) is provided with adjusting nut (24), can adjust the position of upper mounted plate (3) by adjusting nut (24)
Put.
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| CN201510133114.8A CN104817246B (en) | 2015-03-25 | 2015-03-25 | Ultrahigh-pressure deep dehydration method for sewage sludge |
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| CN105836995A (en) * | 2016-03-23 | 2016-08-10 | 誉晟蓝天环境科技（北京）有限公司 | Sludge disintegration and drying device and method thereof |
| CN107572741B (en) * | 2017-04-08 | 2019-11-19 | 浙江威治环保科技有限公司 | The municipal sludge depth minus quantization device of microwave-assisted processing |
| CN106943779B (en) * | 2017-04-08 | 2022-12-06 | 马鞍山开元环保科技有限公司 | Large-treatment-capacity sewage sludge depth reduction device |
| CN110056885A (en) * | 2019-04-27 | 2019-07-26 | 宁波世茂能源股份有限公司 | A kind of efficient burning boiler system |
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| JP5219483B2 (en) * | 2007-12-11 | 2013-06-26 | 株式会社クボタ | Sludge dewatering machine |
| CN101254368B (en) * | 2007-12-14 | 2011-07-27 | 胡杭虎 | Sludge squeezing filtering method and sludge strong press-pate machine used for the method |
| CN101234841B (en) * | 2008-01-02 | 2011-03-23 | 广州普得环保设备有限公司 | Sludge concentration dehydration method |
| CN101279162B (en) * | 2008-01-02 | 2010-12-29 | 浙江华章科技有限公司 | Band press filter with mud fixing belt |
| CN101343138B (en) * | 2008-08-18 | 2010-12-29 | 浙江华章科技有限公司 | Filling material duty cycle operation method for auxiliary sludge dewatering |
| US8261918B1 (en) * | 2009-10-08 | 2012-09-11 | James Robert Powell | Poly-container for solid phase-liquid phase separation |
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Address after: 311201 3rd Floor, Building 1, Xintang Kechuang Garden, 3089 Nanxiu Road, Xintang Street, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Norman Environmental Protection Engineering Technology Co.,Ltd. Address before: 311201 3rd Floor, Building 1, Xintang Kechuang Garden, 3089 Nanxiu Road, Xintang Street, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU NORMAN BIOTECHNOLOGY Co.,Ltd. |