CN107008041A - Sewage sludge minimizing dewatering based on electromagnetic force - Google Patents
Sewage sludge minimizing dewatering based on electromagnetic force Download PDFInfo
- Publication number
- CN107008041A CN107008041A CN201710410608.5A CN201710410608A CN107008041A CN 107008041 A CN107008041 A CN 107008041A CN 201710410608 A CN201710410608 A CN 201710410608A CN 107008041 A CN107008041 A CN 107008041A
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- Prior art keywords
- filter plate
- secondary filter
- electromagnetic
- sewage sludge
- electromagnetic force
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- 239000010801 sewage sludge Substances 0.000 title claims abstract description 39
- 239000010802 sludge Substances 0.000 claims abstract description 61
- 230000018044 dehydration Effects 0.000 claims abstract description 38
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 38
- 238000001914 filtration Methods 0.000 claims description 41
- 241001347978 Major minor Species 0.000 claims description 31
- 239000004744 fabric Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000010865 sewage Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 i.e. Substances 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/164—Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/19—Clamping means for closing the filter press, e.g. hydraulic jacks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
- B01D25/282—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying
- B01D25/284—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying by gases or by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/06—Filters making use of electricity or magnetism
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
Abstract
Quantitative reduction method is dehydrated the present invention relates to a kind of sewage sludge based on electromagnetic force, based on sewage sludge dehydration device, the sewage sludge dehydration device includes the secondary filter plate (7) in front end, rear end pair filter plate (19), middle main filter plate (11), middle pair filter plate (10), electromagnetic core (4) and magnet coil (5), described magnet coil (5) volume is on corresponding electromagnetic core (4), form electromagnetic module, the outside of the secondary filter plate (7) in described front end is provided with electromagnetic module, the inner side of the secondary filter plate (19) in the rear end is provided with electromagnetic module, multiple strainer plate modules are provided between the secondary filter plate (19) of the secondary filter plate (7) in described front end and rear end, each strainer plate module includes a main filter plate in centre (11), secondary filter plate (10) and an electromagnetic module in the middle of one, and be dehydrated through the first stage, second stage is dehydrated and the dump stage.The present invention uses electromagnetic force, with, dehydrated sludge moisture content relatively low advantage low without hydraulic system, energy consumption.
Description
Technical field
The present invention relates to sewage sludge process field, specifically a kind of sewage sludge minimizing based on electromagnetic force takes off
Water method.
Background technology
In the prior art, it is diaphragm plate frame filter press that more deep dehydration device for sludge, which occurs, in the market, during dehydration, effect
Rate is relatively low, and squeeze pressure is only 1.6MPa, its squeezing is injected water into inside diaphragm plate frame by high-pressure hydraulic pump, and bulging barrier film reduces
Filter chamber area, the plastic deformation of diaphragm plate frame backup plate frame is extruded；Diaphragm plate frame compression ratio is small, long with respect to the work period.In addition,
On the market on common elasticity squeezing sheet frame its structure construction, filter is all the injection module of an entirety, and filter is easy
Being damaged the filter after deformation, and damage needs integral replacing so that maintenance cost is higher, it is often more important that, due to structure
Feature and squeeze pressure be not high, the currently employed diaphragm plate frame filter press may by municipal sludge press dewatering to 60% or so,
Plate and frame filter press moisture content reduction than before is many, and main cause is because barrier film bulging produces twice pressing to sludge, i.e.,
Sludge press filtration chamber is variable chamber, but the equipment needs to add the lime and molysite of over dry mud amount 30% or so, so that greatly
The processing disposal follow-up to sludge such as the amount of sludge, and the lime and iron chloride of addition is added greatly brings detrimental effect,
Run counter to the minimizing of specific resistance to filtration and innoxious principle.
Currently there is a kind of superelevation compression elasticity squeezing sludge dewatering equipment, the equipment mainly includes high-voltage oil cylinder, superelevation press filtration
The compositions such as plate, matching board, spring medium, filter cloth specialized, the secondary filter plate in rear end, push pedal, girder, super-pressure squeezing sheet frame includes filter
Frame, filter plate, filter cloth, operating room, spring and piston plate, spring are arranged between filter frame and filter plate, and piston plate is arranged on operating room
Between filter plate so that filter plate produces compression by piston plate to operating room.Rammer board dehydration is broadly divided into two-stage,
The first order is to transport material to filter chamber by feed pump, and separation of solid and liquid, i.e., one are carried out by the pressure of feed pump while charging
Secondary filtering means dehydration；The second level is elastic squeezing, and one end of equipment is fixed, and the other end applies ambient pressure by hydraulic jack, is led to
Cross elastic force-transmitting device (spring) compression chamber space and squeezing progress second dehydration is carried out to material.By carrying out superelevation to sludge
Pressure squeezing, squeeze pressure is in 5MPa or so, and high-pressure oil pump needs to provide 25-30MPa or so pressure, can drop moisture percentage in sewage sludge
To 50% or so.Equally, the superelevation compression elasticity squeezer realizes the change to sludge pressing chamber volume by setting spring
To realize that super-pressure is extruded, because spring often completes the processes such as elongation-compression, it is necessary to bear alternate load, spring is easily sent out
Raw fatigue rupture, spring is that 10-20 high-strength spring is needed between a kind of consumable accessory, and every group of sheet frame, 50-100 block plates
Frame then needs nearly 1000-2000 high-strength spring, moreover, also needing to the bullet for overcoming spring initial when extruding spring
Power is acted on, and squeeze pressure actual suffered by sludge is smaller than the pressure that superpressure oil pump is supplied to during twice pressing.For example, entering
When expecting pressure for 1MPa, spring must be provided more than 1MPa elastic force so that the maximization of chamber can be kept between filter plate and filter frame,
At the end of squeezing is fed, when high-pressure pump carries out second of high-pressure compressing to sludge, it is necessary to overcome spring to start what is had
Elastic force, this partial pressure is the pressure of consumption, so as to cause high-pressure pump to be less than actual pressure to the pressure produced by sludge
Power.
Existing market also has a kind of super-pressure diaphragm plate frame filter press, and the equipment is on original diaphragm plate frame filter press
Upgrading, provide nearly 10MPa pressure to sludge by the water that 10MPa is injected in barrier film, be also for two grades of expressing process,
Feed pressure is begun through, highly pressurised liquid is then injected in barrier film, carrying out bulging to barrier film further presses sludge
Dehydration is squeezed, municipal moisture percentage in sewage sludge can be down to 50% or so after equipment dehydration.There is a subject matter in the equipment
Barrier film is under so high pressure and large deformation, the service life problem of barrier film.
The equipment such as above-mentioned diaphragm plate frame filter press, high-pressure elastomeric machine are all to realize to take off sludge pressing by high-voltage oil cylinder
Water provide power, it is necessary to configure special a set of hydraulic system, and when being high-pressure compressing, hydraulic system pressure is very high.
Need to pull open filter plate during dump, this requires one special plate pulling device of configuration to pull open filter plate one piece for one piece, plate pulling efficiency
Relatively low, the time is long, influences the whole working time.
Analyzed more than, it can be seen that to realize that the deep dehydration of sludge has to realize sludge pressing chamber volume
Changeability, while to sludge carry out high-pressure compressing.Either diaphragm plate frame filter press or superelevation compression elasticity squeezer all has
There is the changeability of sludge pressing chamber, but at present there is following subject matter in deep dehydration device for sludge：(1) it is common
The sludge pressing pressure of diaphragm plate frame filter press is smaller, and super-pressure diaphragm plate frame filter press squeeze pressure is enough, but barrier film
Life problems；(2) superelevation compression elasticity squeezer is the change for realizing sludge pressing chamber volume by spring, and spring is fragile
And substantial amounts of squeeze pressure can be consumed；(3) pressure is bigger, more solid in the sludge being close on filter plate, easily forms one
The closely knit sludge blanket of layer, the sludge blanket is bonded on filter cloth, increase moisture discharge resistance, influences dehydrating effect；(4) due to sewage
High-compressibility, high-moisture percentage and the sewage sludge that sludge has contain capillary water, adsorb sludge dewatering caused by water and internal water
Difficult the characteristics of, completely using mechanical pressure be difficult to sludge carry out high depth dehydration so that moisture percentage in sewage sludge reach one compared with
Low level.
The content of the invention
In view of this, the consumable accessory that the present invention exists for above-mentioned prior art is more, high energy consumption, and oil cylinder working-pressure requires high
Technical problem, proposes a kind of use electromagnetic force, the sewage sludge minimizing dewatering based on electromagnetic force without hydraulic system,
Device complexity is reduced, cost and energy consumption is saved.
The technical solution of the present invention is to provide a kind of sewage sludge minimizing dewatering based on electromagnetic force, base
In sewage sludge minimizing dehydration device, the sewage sludge minimizing dehydration device include the secondary filter plate in front end, the secondary filter plate in rear end,
Middle main filter plate, middle secondary filter plate, electromagnetic core and magnet coil, described magnet coil volume are located at corresponding electromagnetic core
On, electromagnetic module is formed, the outside of the secondary filter plate in described front end is provided with electromagnetic module, and the inner side of the secondary filter plate in the rear end is provided with electricity
Multiple strainer plate modules are provided between magnetic module, the secondary filter plate of the secondary filter plate in described front end and rear end, each strainer plate module includes one
Middle main filter plate, a middle secondary filter plate and an electromagnetic module, a described main filter plate in centre and a middle secondary filter plate
It is separately fixed at the two ends of the electromagnetic module, the main filter plate in centre of the multiple strainer plate module is towards the secondary filter plate in front end, multiple filters
Secondary filter plate is towards the secondary filter plate in rear end in the middle of plate module so that secondary filter plate is corresponded with main filter plate to be coordinated, and forms multiple press filtrations
Chamber, sewage sludge enters the press filtration chamber by enters mud pipe；.
The secondary filter plate in described front end, middle main filter plate, the secondary filter plate of middle secondary filter plate and rear end pass sequentially through linkage company
Connect, linked with being realized under the electromagnetic force of electromagnetic module；
Described dewatering comprises the following steps：
First stage is dehydrated：Magnet coil into electromagnetic module is passed through the first electric current, keeps the electromagnetic force produced by it
Can by major-minor filter plate inhale be combined together so that press filtration chamber close and it is carried out it is spacing, to the magnet coil power off；By dirt
In sewage sludge injection press filtration chamber, realize that the first stage is dehydrated under feed pressure effect；
Second stage is dehydrated：The magnet coil in electromagnetic module is powered again, the second electric current is passed through, when direction is with adhesive
The sense of current it is identical, second electric current be more than first electric current, the second electric current increase come cause major-minor filter plate it
Between pressure increase, by electromagnetism the suction-combining force of the electromagnetic module to filter plate, realize second stage be dehydrated；
The dump stage：First release to the spacing of press filtration chamber, the sense of current of changing section magnet coil so that all
The electromagnetic force of press filtration chamber can all become repulsion, and major-minor filter plate, which can be separated from, in the presence of repulsion comes, to realize dump.
Optionally, sealing ring is provided with the outer ring of the main filter plate in described centre, and successively from interior on middle main filter plate
Outwards set gradually reinforcing line and filter cloth.
Optionally, by air inlet supervisor connection many air intake branches, many air intake branches accordingly with multiple press filtration chambers
Room is connected, for being passed through gases at high pressure in being responsible for from air inlet and entering corresponding press filtration chamber by air intake branch.
Optionally, in second stage dehydration, gases at high pressure is passed through into press filtration chamber, are entered by air intake branch
Air admission hole on filter plate and to carrying out blowback on the filter cloth on reinforcing line, realizes filter cloth cleaning and takes away portion with vapor form
Divide moisture.
Optionally, the secondary filter plate in described front end, middle main filter plate, the secondary filter plate of middle secondary filter plate and rear end pass sequentially through connecting rod
Mechanism is connected, and is linked with being realized under the electromagnetic force of electromagnetic module.
Optionally, described linkage includes master connecting-rod and slave connecting rod, and described master connecting-rod is arranged in the middle of odd number block
On the rotation central axis of secondary filter plate, described slave connecting rod is arranged in the middle of even numbered blocks on the rotation central axis of secondary filter plate, master connecting-rod and pair
Connecting rod is connected through the hinge.
Optionally, respectively it is provided with the secondary filter plate in described front end, middle main filter plate and middle secondary filter plate for discharging
Filter out the filter plate drainpipe of moisture.
Optionally, it is described it is spacing realized by the stopping means, secondary filter plate is additionally provided with limit in the middle of described odd number block
Position device, described stopping means includes limited block electromagnetic core, limited block coil, spring stop, back-moving spring, slide rail and cunning
Slide rail in block, described each stopping means is fixed on middle secondary filter plate, can be accurately defined after sliding block stretching with realizing
The angle of master connecting-rod rotation, so as to define the distance of middle secondary filter plate and middle main filter plate, described limited block electromagnetic core
It is fixed on position limiting slide block, described spring stop is fixed on slide rail, described back-moving spring is used for connection sliding block and slide rail.
Optionally, described slider tail is magnetisable material, when limited block coil obtains electric rear slider and slide rail generation relatively
Motion, while compression reseting spring, slip front, which is stretched out, blocks master connecting-rod.
Optionally, described minimizing dehydration device also includes dust arrester, and the dust arrester is by negative pressure by high pressure
The sludge dust that gas is brought is drawn onto dust arrester and removed.
Using above method, compared with prior art, the present invention has advantages below：(1) provide powerful by electromagnetic field
Squeeze force sludge is squeezed, without hydraulic coupling and hydraulic system, in addition, the electric current side by changing magnet coil
To the suction of electromagnet is changed into repulsion, automatic pulling plate, without plate pulling device；(2) middle main filter plate, sealing ring, middle pair are passed through
The structure coordinated between filter plate, reinforcing line and filter cloth, the cavity of the variable volume of the closing of composition meets the high-compressibility of sludge
Characteristic, in the absence of using consumable accessorys such as spring, barrier films, improves equipment dependability and service life；(3) dredge pump is pressed into using height,
This enters dredge pump for high-pressure plunger pump, and first time feed pressure dehydration, Ran Houzai can be carried out to sludge by the high pressure charging pressure
By increasing coil current, pressure is incrementally increased between increasing electromagnetic force causes major-minor filter press plate, to sludge progress adding progressively
Pressure, carries out second stage press dewatering；(4) due to also having part moisture mechanically to remove in sludge, this programme
High pressure gas generator and component are employed, is acted on by gases at high pressure, the moisture that mechanical system in sludge is difficult to remove is led to
Cross high pressure draught mode to take away, that is, realize mechanical expression and air-flow double effects, so as to further reduce the moisture of sludge, reach
Sludge deep minimizing purpose.
Brief description of the drawings
Fig. 1 is the front view of the sewage sludge dehydration device of the present invention based on electromagnetic force；
Fig. 2 is the top view of the sewage sludge dehydration device of the present invention based on electromagnetic force；
Fig. 3 is the sectional view of the sewage sludge dehydration device of the present invention based on electromagnetic force；
Fig. 4 is the partial enlarged drawing of the sewage sludge dehydration device sectional view of the present invention based on electromagnetic force；
Fig. 5 is the structural representation of stopping means；
Structural representation when Fig. 6 opens for the sewage sludge dehydration device chamber of the present invention based on electromagnetic force；
Structural representation when Fig. 7 closes for the sewage sludge dehydration device chamber of the present invention based on electromagnetic force；
Side view when Fig. 8 closes for the sewage sludge dehydration device chamber of the present invention based on electromagnetic force.
As illustrated, 1, enters mud pipe, 2, plunger pump, 3, pneumatic ball valve, 4, electromagnetic core, 5, magnet coil, 6, air inlet branch
Pipe, 7, the secondary filter plate in front end, 8, air inlet supervisor, 9, sealing ring, 10, middle secondary filter plate, 11, middle main filter plate, 12, master connecting-rod, 13,
Slave connecting rod, 14, stopping means, 14-1, limited block electromagnetic core, 14-2, limited block coil, 14-3, spring stop are 14-4, multiple
Position spring, 14-5, slide rail, 14-6, sliding block, 15, dust arrester, 16, high-pressure pump, 17, rotation central axis, 18, latch, 19, after
The secondary filter plate in end, 20, filter plate journal stirrup, 21, reinforcing line, 22, filter cloth, 23, major-minor filter plate connecting tube, 24, limit to salient point, 25, filter plate
Drainpipe, 26, controlling bus, 27, the secondary filter plate enters mud pipe in front end, 28, system controller.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The present invention covers any replacement, modification, equivalent method and scheme made in the spirit and scope of the present invention.For
Make the public have the present invention thoroughly to understand, concrete details is described in detail in present invention below preferred embodiment, and
Description without these details can also understand the present invention completely for a person skilled in the art.In addition, the accompanying drawing of the present invention
In in order to illustrate the need for, be not drawn to scale accurately completely, be explained herein.
As illustrated, the inventive method be based on sewage sludge dehydration device, including enters mud pipe 1, height be pressed into dredge pump 2, it is pneumatic
Ball valve 3, the secondary filter plate 7 in front end, sealing ring 10, dust arrester 15, the secondary filter plate 19 in rear end, filter plate journal stirrup 20, reinforcing line 21, filter cloth
22nd, enters mud pipe 27, filter plate drainpipe 25, controlling bus 26, system controller 28, described minimizing dehydration device also include electricity
Magnetic core 4, magnet coil 5, air intake branch 6, air inlet supervisor 8, middle secondary filter plate 9, middle main filter plate 11, master connecting-rod 12, pair are even
Bar 13, stopping means 14, high-pressure pump 16, rotation central axis 17, hinge 18, major-minor filter plate connecting tube 23, limit to salient point 24, it is described
In the middle of be provided with multiple electromagnetic cores 4, magnet coil 5 and major-minor filter plate connecting tube 23, middle main filter plate between secondary filter plate 9
11st, multiple electromagnetic cores 4, magnet coil 5 and the composition of major-minor filter plate connecting tube 23 is provided between middle secondary filter plate 9 to be relatively fixed
Unit, described magnet coil is passed through electric current for alternating current, and its size and direction can be adjusted, front end pair filter plate 7 and electricity
Magnet is fixedly connected with pneumatic ball valve 3, and rear end pair filter plate 19 is fixedly connected with middle main filter plate 11.Master connecting-rod 12, slave connecting rod 13
Secondary filter plate 10, the secondary filter plate 19 of the secondary filter plate 7 in front end and rear end are connected in the middle of will be all.The middle main outer ring of filter press plate 11 is provided with half
Round recessed is used to install sealing ring 10, and the diameter of sealing ring 10 is smaller than middle main filter plate overall diameter, middle pair filter plate 9, middle main filter
Plate 11, sealing ring 10, reinforcing line 20, filter cloth 19 constitute the closed chamber of a variable-volume, and the closed chamber is sludge press filtration
Chamber, the more excellent scheme of filtrating-pressing plate frame structure is made as circle, and preferably, specific demand can also do squarely to sealing property.
Press filtration chamber includes middle main filter plate 11, middle secondary filter plate 10, reinforcing line 21, filter cloth 22, the middle main He of filter plate 11
There are annular, bar shaped water outlet groove, three through holes that its top half is connected with air intake branch 6, lower half on middle pair filter plate 10
Divide seven through holes being connected with filter plate drainpipe 25 so that filter plate drainpipe 25 can be flowed to and by height by being press-filtered out the water come
Body of calming the anger accelerates the flow velocity of water while blowing out the water on mud cake surface, middle pair filter plate 10, the secondary filter plate 7 in front end and rear end pair filter plate 19
Both sides, which have on boss, boss, to be had rotation central axis 17 and limits to salient point 24, for installing connection master connecting-rod 12 and limiting its rotation
Direction, reinforcing line 21 is fixed on each piece of filter plate, and reinforcing line 21 is wrapped on filter plate by filter cloth 22, middle main filter plate 11,
Middle pair filter plate 10, reinforcing line 21, the center of filter cloth 22 are opened up into mud hole so that sludge can be sequentially entered from sludge hole is entered
In next group of major-minor filter pad chamber.
Secondary filter plate is further fixed on including limited block electromagnetism in stopping means 14, described stopping means 14 in the middle of odd number block
Iron core 14-1, limited block coil 14-2, spring stop 14-3, back-moving spring 14-4, slide rail 14-5, sliding block 14-6 etc., it is described
Slide rail 14-5 in each stopping means 14 is fixed on the determination position of middle filter plate, to ensure that sliding block can be accurately defined after stretching out
The angle that master connecting-rod 12 rotates, so as to define the distance of middle secondary filter plate 10 and middle main filter plate 11 indirectly, and then ensures pressure
Filter chamber room keeps closing during mud is entered, and described limited block electromagnetic core 14-1 is fixed on position limiting slide block 14-6, described
Limited block coil 14-2 be connected with controller, receive switching signal, described spring stop 14-3 is fixed on slide rail 14-5, makes
Obtaining back-moving spring 14-4 has enough lifting surface areas, and described back-moving spring 14-4 is responsible for connection sliding block 14-6 and slide rail 14-5,
And ensure that sliding block 14-6 and slide rail 14-5 can reset into original position, described sliding block 14-6 tails after occurring relative motion
Portion is magnetisable material, relative motion is produced when limited block coil 14-2 obtains electric rear slider 14-6 and slide rail 14-5, while compression is multiple
Position spring 14-4, slip front, which is stretched out, blocks master connecting-rod 12.Filter press plate refers to count since mud inlet end in the middle of the odd number block, i.e.,
To count from left to right in figure, exemplified by the press filtration chamber in such as Fig. 2 thin frame, the middle filter press plate of first and the 3rd inframe
As filter press plate in the middle of odd number, is filter press plate in the middle of even number positioned at the middle filter press plate of second middle inframe.
Master connecting-rod 12 is arranged in the middle of odd number block on the rotation central axis 17 of secondary filter plate, and described slave connecting rod 12 is arranged on even number
In the middle of block on the rotation central axis 17 of secondary filter plate, master connecting-rod 12 and slave connecting rod 12 are connected by latch, and described limit exists to salient point 24
On the boss edge of filter plate both sides so that master connecting-rod 12 can only be being limited to the rotated down of salient point 24.
Front end pair filter plate 7, middle secondary filter plate 10, the upper end of middle main filter plate 11 offer high pressure air intake hole and and air inlet
Branch pipe 6 is connected, and through hole is offered on described filter plate, and high pressure gas generator and component include high-pressure pump 16, air intake branch
6th, air inlet supervisor 8, described air intake branch 6 is that flexible pipe can be moved with filter plate, and gases at high pressure pass through high-pressure pump 16, air inlet
Supervisor 8, air intake branch 6 and through hole can enter sludge press filtration intracavitary, the secondary filter plate 7 in described front end, middle secondary filter plate 10, centre
The lower end of main filter plate 11 offers liquid discharge through hole and is connected with filter plate drainpipe 25, and drainpipe 25 passes through flexible pipe and draining master
Pipe is connected, and drain header end is provided with magnetic valve.
System controller 28 and controlling bus 26 are also equipped with by electromagnetic force sewage sludge dehydration minimizing device, is realized
System is automatically controlled.Described pneumatic ball valve 3 is connected with system controller 28, and automatic shutter, described each filter can be achieved
Magnet coil 5 and limited block coil 142 on plate are connected by controlling bus 26 with system controller 28.
Outlet valve is electromagnetic outlet valve, can automatic controller opening and closing combination.The electromagnetic force sewage sludge minimizing dehydration
Device also includes dust arrester 15, and the sludge dust that the dust arrester 15 is brought gases at high pressure by negative pressure is removed, just heavy dress
Put can for cloth bag, cyclone separator or both combination.
Present apparatus operation principle is as follows：
It is exemplified by all chambers are all opened, an instruction at this moment to be sent by controller, to magnet coil by initial state
Lead to a upper less electric current, be combined together as long as the electromagnetic force produced by the electric current can inhale major-minor filter plate, adhesive
Magnet coil is powered off afterwards, and stopping means coil obtains electric so that position limiting slide block stretches out spacing slide rail, limits the master connecting-rod anglec of rotation,
Then pneumatic ball valve is opened, and height is pressed into dredge pump and injects mud in press filtration cavity, major-minor filter press plate by mud pressure toward two
Lateral movement, press filtration chamber becomes larger, and position limiting slide block will block the rotation of master connecting-rod when reaching maximum so that chamber volume size
Fixed, relative position is fixed between two filter press plates of major-minor, and the size of the press filtration chamber is sludge initial volume size, mud
After, mud is first entered back into second chamber full of first press filtration chamber, promote the main filter press plate of second chamber to
Right motion, similarly fixes two filter press plates of major-minor, example is pushed away according to this, when sludge is entered finally using major-minor connecting rod and stopping means
During one chamber, each filter press plate is connected by major-minor connecting rod and stopping means, and all press filtration chambers reach maximum.Entering
Expect under pressure effect, the pressure that sludge is subject to is between 1.5-2.0MPa, and mud continues to be pumped to, and moisture passes through filter cloth and reinforcement
Lining is entered in water outlet groove and through hole on filter plate, and from outlet valve discharge, and sludge then stays in press filtration intracavitary, during by one section
Between charging dehydration, press filtration chamber is substantial, and mud cannot be introduced into, and closes pneumatic ball valve, stops into mud, first stage
Charging dehydration terminates.
Prepare second stage dehydration, be again solenoid ON power supply, sense of current when direction is with adhesive is identical, but
Size is much larger than operating current, and electric current can be gradually increased to so that the pressure between major-minor filter plate is stepped up.Each chamber
The room independent electromagnetic attraction that paddles one's own canoe is squeezed to the sludge in respective chamber, real to sludge after lasting squeezing a period of time
Existing second stage press dewatering；
Controller control high-pressure pump is started working, the high pressure admission that gases at high pressure are entered on filter plate by air intake branch
Hole, through hole carry out blowback to being close on the filter cloth on reinforcing line, and gases at high pressure blow the mud cake being close on filter cloth open, simultaneously
The mud granule sticked on filter cloth is blown off, filter cloth is cleaned, gases at high pressure also take away moisture certain in sludge；In addition
While mechanical expression, gases at high pressure enter, and will be difficult to the moisture deviate from more by water by mechanical expression in sludge
Vaporous form is taken out of, when outlet valve does not almost have water outlet, and squeezing stops, and whole dehydration terminates.
Into the dump stage, first to the coil blackout on stopping means so that position limiting slide block is returned to by back-moving spring
Position originally, then changes the sense of current of magnet coil on the combination filter plate block for be mounted with stopping means, so all
The electromagnetic force of press filtration chamber can all become repulsion, and major-minor filter plate, which can be separated from, in the presence of repulsion comes, and sludge is between filter plate
The conveying mechanism of the space lower section that drops to device transfer out, this stage high pressure air pump is still working in order to mud
Block comes off from chamber and blows out the water of residual and the water on mud cake surface, until dump is finished, is when chamber is opened
Prevent from closing master connecting-rod next time to rotate up so that stopping means failure, we increase on filter plate boss limit to salient point,
During so that press filtration chamber moving maximum to, master connecting-rod keeps a less angle with horizontal direction all the time, and this not only improves next
Secondary rotation, it also avoid the reverse rotation of connecting rod.Running to this cycle has been completed, and each mechanism is turned again to initially
State, is prepared to enter into next cycle period, iterative cycles running.
Dependence electromagnetic force sewage sludge dehydration quantitative reduction method based on the device has following steps：
(1) magnet coil leads to the electricity of a smaller current and makes to produce suction between major-minor filter plate, major-minor filter plate closure, its
Middle pair filter plate, middle main filter plate, sealing ring, reinforcing line and filter cloth constitute a minimum volume closed chamber, major-minor connecting rod
It is rotated down；
(2) magnet coil is powered off, and stopping means coil obtains electric so that position limiting slide block stretches out spacing slide rail, limits master connecting-rod
The anglec of rotation；
(3) pneumatic ball valve is opened, and height is pressed into dredge pump and injects mud in press filtration cavity, and major-minor filter press plate is pressed by mud
Power becomes larger toward two lateral movements, press filtration chamber, the position limiting slide block rotation dry by main company is blocked when reaching maximum so that chamber body
Product size is fixed, and relative position is fixed between two filter press plates of major-minor, and the size of the press filtration chamber is that sludge initial volume is big
It is small；
(4) mud enters, and mud enters second chamber full of first press filtration chamber, promotes the master of second chamber
Filter press plate is moved right, and similarly fixes two filter press plates of major-minor using major-minor connecting rod and stopping means, example is pushed away according to this, when sludge enters
When entering to last chamber, each filter press plate is connected by major-minor connecting rod and stopping means, and all press filtration chambers reach
It is maximum；
(5) under feed pressure effect, the pressure that sludge is subject to is between 1.5-2.0MPa, and mud continues to be pumped to, water
Divide and entered by filter cloth and reinforcing line in water outlet groove and through hole on filter plate, from outlet valve discharge, and sludge then stays in pressure
In filter chamber, it is dehydrated through charging after a while, press filtration chamber is substantial, and mud cannot be introduced into, closes pneumatic ball valve,
Stop into mud, first stage charging dehydration terminates；
(6) start second stage dehydration, be again solenoid ON power supply, sense of current phase when direction is with adhesive
Together, but size is much larger than operating current, and electric current can be gradually increased to so that the pressure between major-minor filter plate is stepped up.Often
The individual chamber independent electromagnetic attraction that paddles one's own canoe is squeezed to the sludge in respective chamber, to dirt after lasting squeezing a period of time
Mud realizes second stage press dewatering；
(7) controller control high-pressure pump is started working, and the height that gases at high pressure are entered on filter plate by air intake branch is pressed into
Stomata, through hole carry out blowback to being close on the filter cloth on reinforcing line, and gases at high pressure blow the mud cake being close on filter cloth open, together
When the mud granule sticked on filter cloth is blown off, clean filter cloth, gases at high pressure also take away moisture certain in sludge；
(8) while mechanical expression, gases at high pressure enter, and will be difficult to the moisture deviate from more by mechanical expression in sludge
Many is taken out of by vapor, when outlet valve does not almost have water outlet, and squeezing stops, and whole dehydration terminates.
(9) the dump stage, first to the coil blackout on stopping means so that position limiting slide block returns to original by back-moving spring
The position come, then changes the sense of current of magnet coil on the combination filter plate block for be mounted with stopping means, so all pressures
The electromagnetic force of filter chamber room can all become repulsion, and major-minor filter plate, which can be separated from, in the presence of repulsion comes, and sludge is between filter plate
The conveying mechanism that space drops to the lower section of device is transferred out, and this stage high pressure air pump is still working on, until dump
Finish；
(10) after dump is finished, all major-minor filter press plate separation return to original state, wait to enter next circulation.
Only preferred embodiments of the present invention are described above, 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 within the scope of the present invention.
Claims (10)
1. a kind of sewage sludge minimizing dewatering based on electromagnetic force, including the secondary filter plate (7) in front end, the secondary filter plate in rear end
(19), middle main filter plate (11), middle secondary filter plate (10), electromagnetic core (4) and magnet coil (5), described magnet coil (5)
Volume forms electromagnetic module on corresponding electromagnetic core (4), and the outside of the secondary filter plate (7) in described front end is provided with electromagnetic module,
The inner side of the secondary filter plate (19) in the rear end is provided between electromagnetic module, the secondary filter plate (19) of the secondary filter plate (7) in described front end and rear end
Provided with multiple strainer plate modules, each strainer plate module includes secondary filter plate (10) in the middle of a main filter plate in centre (11), one and one
Electromagnetic module, a described main filter plate in centre (11) and a middle secondary filter plate (10) are separately fixed at the two of the electromagnetic module
End, the main filter plate in centre of the multiple strainer plate module is towards the secondary filter plate (7) in front end, secondary filter plate (10) in the middle of multiple strainer plate modules
Towards the secondary filter plate (19) in rear end so that secondary filter plate is corresponded with main filter plate to be coordinated, and forms multiple press filtration chambers, and sewage sludge leads to
Cross enters mud pipe (1) and enter the press filtration chamber；
Described dewatering comprises the following steps：
First stage is dehydrated：Magnet coil into electromagnetic module is passed through the first electric current, keeps electromagnetic force produced by it can be by
Major-minor filter plate inhale is combined together so that press filtration chamber close and it is carried out it is spacing, to the magnet coil power off；By Sewage
In mud injection press filtration chamber, realize that the first stage is dehydrated under feed pressure effect；
Second stage is dehydrated：The magnet coil in electromagnetic module is powered again, the second electric current, electricity when direction is with adhesive is passed through
Flow direction identical, second electric current is more than first electric current, the second electric current increase causes between major-minor filter plate
Pressure increase, by electromagnetism the suction-combining force of the electromagnetic module to filter plate, realizes that second stage is dehydrated；
The dump stage：First release to the spacing of press filtration chamber, the sense of current of changing section magnet coil so that all press filtrations
The electromagnetic force of chamber can all become repulsion, and major-minor filter plate, which can be separated from, in the presence of repulsion comes, to realize dump.
2. a kind of sewage sludge minimizing dewatering based on electromagnetic force according to claim 1, it is characterised in that：Institute
Be provided with sealing ring (9) on the outer ring for the main filter plate in centre (11) stated, and on middle main filter plate (11) successively from inside to outside according to
Secondary setting reinforcing line (21) and filter cloth (22).
3. a kind of sewage sludge minimizing dewatering based on electromagnetic force according to claim 2, it is characterised in that：By
Air inlet supervisor (8) connect many air intake branches (6), many air intake branches (6) accordingly with multiple press filtration chambers, use
Gases at high pressure are passed through in being responsible for from air inlet and corresponding press filtration chamber is entered by air intake branch (6).
4. a kind of sewage sludge minimizing dewatering based on electromagnetic force according to claim 3, it is characterised in that：
In second stage dehydration, gases at high pressure are passed through into press filtration chamber, the air admission hole that enters by air intake branch on filter plate, simultaneously
To carrying out blowback on the filter cloth on reinforcing line, realize filter cloth cleaning and part moisture is taken away with vapor form.
5. a kind of sewage sludge minimizing dewatering based on electromagnetic force according to claim 3, it is characterised in that：Institute
The secondary filter plate (7) in front end, middle main filter plate (11), the secondary filter plate (19) of middle secondary filter plate (10) and rear end stated pass sequentially through connecting rod machine
Structure is connected, and is linked with being realized under the electromagnetic force of electromagnetic module.
6. a kind of sewage sludge minimizing dewatering based on electromagnetic force according to claim 5, it is characterised in that：Institute
The linkage stated includes master connecting-rod (12) and slave connecting rod (13), and described master connecting-rod (12) is arranged on secondary filter plate in the middle of odd number block
(10) on rotation central axis (17), described slave connecting rod (13) is arranged on the rotation central axis (17) of secondary filter plate (10) in the middle of even numbered blocks
On, master connecting-rod (12) and slave connecting rod (13) are connected through the hinge.
7. a kind of sewage sludge minimizing dewatering based on electromagnetic force according to claim 2, it is characterised in that：Institute
Respectively it is provided with the secondary filter plate (7) in front end, middle main filter plate (11) and the middle secondary filter plate (10) stated and filters out water for discharge
The filter plate drainpipe (25) divided.
8. a kind of sewage sludge minimizing dewatering based on electromagnetic force according to claim 1, it is characterised in that：Institute
State it is spacing realized by the stopping means, secondary filter plate (10) is provided with stopping means (14) in the middle of described odd number block, described
Stopping means include limited block electromagnetic core (14-1), limited block coil (14-2), spring stop (14-3), back-moving spring
Slide rail (14-5) in (14-4), slide rail (14-5) and sliding block (14-6), described each stopping means (14) is fixed on centre
On secondary filter plate (10), the angle of master connecting-rod (12) rotation can be accurately defined after sliding block (14-6) stretching to realize, so as to limit
The distance of middle secondary filter plate (10) and middle main filter plate (11), described limited block electromagnetic core (14-1) is fixed on sliding block
On, described spring stop (14-3) is fixed on slide rail, and described back-moving spring (14-4) is used for connection sliding block (14-6) and sliding
Rail (14-5).
9. a kind of sewage sludge minimizing dewatering based on electromagnetic force according to claim 8, it is characterised in that：Institute
Sliding block (14-6) afterbody stated is magnetisable material, when limited block coil (14-2) obtains electric rear slider (14-6) and slide rail (14-5) production
Raw relative motion, while compression reseting spring (14-4), sliding block (14-6) front end, which is stretched out, blocks master connecting-rod (12).
10. a kind of sewage sludge minimizing dewatering based on electromagnetic force according to claim 1, it is characterised in that：
Described minimizing dehydration device also includes dust arrester (15), and the dust arrester (15) is brought gases at high pressure by negative pressure
Sludge dust be drawn onto dust arrester (15) and remove.
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| CN201710410608.5A CN107008041B (en) | 2017-06-03 | 2017-06-03 | Sewage sludge reduction dehydration method based on electromagnetic force |
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|---|---|---|---|
| CN201710410608.5A CN107008041B (en) | 2017-06-03 | 2017-06-03 | Sewage sludge reduction dehydration method based on electromagnetic force |
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| CN109316795A (en) * | 2018-12-12 | 2019-02-12 | 湖南醴陵复民瓷业机械制造有限公司 | A kind of Filter pressing board of Production of Ceramics filter press |
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Effective date of registration: 20221117 Address after: 443000 Room 401, Unit 1, Building 5, No.1 Dacheng Road, Xiling District, Yichang City, Hubei Province Applicant after: Zhou Guangwei Address before: 310018 China Metrology University, 258 Xiyuan street, Xiasha, Jianggan District, Hangzhou, Zhejiang Applicant before: Rao Binqi |
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