CN107670384B - A kind of chemical industry pulp separation system of material position judgement - Google Patents
A kind of chemical industry pulp separation system of material position judgement Download PDFInfo
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- CN107670384B CN107670384B CN201611137924.1A CN201611137924A CN107670384B CN 107670384 B CN107670384 B CN 107670384B CN 201611137924 A CN201611137924 A CN 201611137924A CN 107670384 B CN107670384 B CN 107670384B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- 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
- C02F2303/16—Regeneration of sorbents, filters
Abstract
A kind of chemical industry pulp separation system of material position judgement, it includes 1 belt filter press, 1 chamber type filter, 1 pressing filter, 1 extruding filter, 1 bactericidal device, 1 settling tank, 1 waste liquid pool, 1 collecting tank, 4 solid-holding ponds, 3 surge tanks, 6 feed pumps, 5 road Ge Huan devices and 15 valves, it further include main control computer and sensor, main control computer receives the signal from sensor, and controls 15 valves, 5 circulators, 6 feed pumps, chamber type filter, belt filter press, squeezes filter, pressing filter.
Description
Technical field
The invention belongs to chemical separating system, in particular to a kind of chemical industry pulp separation system of material position judgement.
Background technique
Currently, the technical force of production of the separation system of chemicals is weak, production line automation degree is low, manual operation
The dispersion of more, process, working environment difference fall behind production on the way, production process there are the problem of following points.
Current separation system, for chemicals slurry types it is more single, pipeline cannot be adjusted as needed in due course,
Realize the processing to different slurries；Separation system separative efficiency is low, and automatic control degree is low, operator's manual operations efficiency
Lowly；The adjusting and monitoring of certain parameters rely primarily on experienced operator's monitoring in production process, so that production information
And process data cannot be accurate, cannot adjust in time.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of chemical separating systems, can allow for user as needed
Pipeline is adjusted, Multiple Cycle has been used, is filtered more thorough.
To achieve the goals above, the technical solution of the present invention is as follows: a kind of material position judgement chemical industry pulp separation system,
It sinks including 1 belt filter press, 1 chamber type filter, 1 pressing filter, 1 extruding filter, 1 bactericidal device, 1
Pond, 1 waste liquid pool, 1 collecting tank, 4 solid-holding ponds, 3 surge tanks, 6 feed pumps, 5 road Ge Huan devices and 15 valves drop,
It is characterized by: settling tank accommodates chemical industry slurry, the chemical industry slurry after sedimentation is by settling bottom of pond portion in the work of the first feed pump
Enter belt filter press with lower, the chemical material after filters pressing is put into the first solid-holding pond, the chemical industry filtrate of generation by belt filter press
Enter recycling Trunk Line by the 6th feed pump and the 14th valve and return to settling tank, settling tank top has chemical industry filtrate to go out
Mouthful, chemical industry filtrate enters first by the second feed pump by the first valve and changes road device, adjusts first and changes road device, makes chemical industry filtrate
Road device is changed into second or changes road device into third, is adjusted second and is changed road device, chemical industry filtrate is made to enter waste liquid pool or entrance
Second valve, after chemical industry filtrate passes through the second valve, into chamber type filter, the chemical industry filtrate of chamber type filter lower part enters back
It receives Trunk Line and returns to settling tank, filtered chemical material is put into the second solid-holding pond, chamber type filter top by chamber type filter
Chemical industry filtrate enter the first surge tank by third valve, pass through the 4th valve under the drive after buffering by third feed pump
Road device is changed into third, third is adjusted and changes road device, chemical industry filtrate changes road device into the 5th valve or the 4th, and chemical industry filtrate passes through
Enter after 5th valve and squeeze filter, the chemical industry filtrate for squeezing filter lower part enters recycling Trunk Line by the 7th valve and returns
Settling tank is returned, filter is squeezed by filtered chemical material and is put into third solid-holding pond, the chemical industry filtrate on top passes through the 8th valve
Door enters the 4th commutator, adjusts the 4th commutator, and chemical industry filtrate enters bactericidal device or the 5th commutator, bactericidal device bottom
The chemical industry filtrate in portion after degerming by the 13rd valve enter the 5th commutator, adjust the 5th commutator, chemical industry filtrate into
Enter third surge tank or pressing filter, the chemical industry filtrate of third surge tank by the 5th feed pump and the 12nd valve into
Enter pressing filter, filtered chemical material is put into the 4th solid-holding pond, the chemical industry of pressure filtration motor spindle by pressing filter
Filtrate enters recycling Trunk Line by the 11st valve and returns to settling tank, and it is slow that the chemical industry filtrate on pressing filter top enters second
Tank is rushed, the liquid in the second surge tank is reusable chemical liquid, and a part of chemical liquid passes through the second surge tank bottom
Portion enters collecting tank, a part of chemical liquid as flushing liquor by the 4th feed pump pass through respectively the 9th valve, the tenth valve,
6th valve and the 15th valve return to chamber type filter, pressing filter, squeeze filter and belt filter press, with reality
Now to chamber type filter, pressing filter, the flushing for squeezing filter and belt filter press；
The system further includes main control computer and sensor, and main control computer receives the signal from sensor, and passes through
The on-off of 15 valves of bus marco, the selection of 5 circulators, the running power of 6 feed pumps, chamber type filter transmission dress
The driving power set, the operating voltage of 3 driving motors of belt filter press squeeze the work electricity of the driving motor of filter
Pressure, the operating voltage of the driving motor of pressing filter；
Sensor includes vibrating sensor and noise transducer, and vibrating sensor and noise transducer, which are mounted on, to be squeezed
To measure the machine for squeezing filter and pressing filter on the cylindrical shell of filter and the outer cylinder main body of pressing filter
Tool vibration signal and noise signal；
Uniform crossover is provided with N number of in the circumferential direction of the outer cylinder main body of the cylindrical shell or pressing filter of extruding filter
Vibrating sensor and N number of noise transducer, vibrating sensor collection machinery vibration signal, noise transducer acquisition noise signal,
The cylindrical shell of filter and the outer cylinder main body of pressing filter are squeezed by mechanical oscillation signal and noise signal judgement
In material position；
Vibrating sensor uses FBG (fiber bragg grating) vibrating sensor, including FBG, cylinder barrel type elastic element
With pick-up quality, FBG is placed in inside cylinder barrel type elastic element on axis, and pick-up mass block is coaxially placed in cylinder barrel type elasticity member
The vibration signal of the upper bottom cover of part, the output of FBG vibrating sensor is filtered it by FBG vibration (FBG) demodulator, by optical signal
Electric signal is converted to, then vibration signal is acquired by capture card, the mechanical oscillation signal needed；Noise sensing
Device uses pressure resistance type noise transducer.
Beneficial effects of the present invention:
1. using multiple filter devices, multiple changing road device and valve realizes processing and manufacturing to a variety of chemical industry slurries；
2. three recirculate, keep the filtering of waste liquid more thorough；
3. realizing each filter device auto-flushing by self-stripping system；
4. monitoring material position situation in real time, the generation of threadiness and block material is prevented；
5. realize Gravity Separation and filters pressing separation be implemented separately, extend the Gravity Separation time；
6. deviation correcting device combines tuningout and tensioning function so that each strainer will not roll release and sideslip, and can be real
When adjust the tensioning degree of each strainer；
7. pressing filter have filter pressure big, good seal performance, continuous operation, full automatic working, in different chamber
It is interior using different operating pressures the advantages that；
8. reduced by fuzzy control modifying repeatedly of manually setting wasted in bring efficiency and precision it is inaccurate
Really.
Detailed description of the invention
Fig. 1 is the chemical industry pulp separation system schematic that material position of the invention judges；
Fig. 2 is the structural schematic diagram of belt filter press of the invention；
Fig. 3 is the structure chart of extruding filter of the invention；
Fig. 4 is the main view of pressing filter of the invention；
Fig. 5 is the side view of pressing filter of the invention；
The schematic diagram of fuzzy controller Fig. 6 of the invention.
Specific embodiment
The present invention will be further described below with reference to the accompanying drawings and embodiments.
The embodiment of the present invention is with reference to shown in Fig. 1-6.
A kind of chemical industry pulp separation system of material position judgement comprising 1 belt filter press, 1 chamber type filter, 1
Pressing filter, 1 extruding filter, 1 bactericidal device, 1 settling tank, 1 waste liquid pool, 1 collecting tank, 4 solid-holding ponds,
3 surge tanks, 6 feed pumps, 5 road Ge Huan devices and 15 valves, it is characterised in that: settling tank accommodates chemical industry slurry, sedimentation
Chemical industry slurry afterwards enters belt filter press by sedimentation bottom of pond portion under the action of the first feed pump, and belt filter press is by filters pressing
Chemical material afterwards is put into the first solid-holding pond, and the chemical industry filtrate of generation enters recycling by the 6th feed pump and the 14th valve
Trunk Line returns to settling tank, and chemical industry filtrate (liquid is arranged at settling tank top, and chemical industry filtrate passes through the second feed pump by the first valve
Road device is changed into first, first is adjusted and changes road device, so that chemical industry filtrate is entered second and changes road device or change road device into third, adjust
Second changes road device, so that chemical industry filtrate is entered waste liquid pool or enters the second valve, after chemical industry filtrate passes through the second valve, into case
Formula filter, the chemical industry filtrate of chamber type filter lower part enters recycling Trunk Line and returns to settling tank, after chamber type filter will filter
Chemical material be put into the second solid-holding pond, the chemical industry filtrate on chamber type filter top enters the first surge tank by third valve,
Enter third by passing through the 4th valve under the drive of third feed pump after buffering and change road device, adjusts third and change road device, chemical industry filter
Liquid enters the 5th valve or the 4th changes road device, and chemical industry filtrate enters extruding filter after passing through the 5th valve, squeezes filter
The chemical industry filtrate of lower part enters recycling Trunk Line by the 7th valve and returns to settling tank, squeezes filter for filtered chemical industry object
Material is put into third solid-holding pond, and the chemical industry filtrate on top enters the 4th commutator by the 8th valve, adjusts the 4th commutator, chemical industry
Filtrate enters bactericidal device or the 5th commutator, and the chemical industry filtrate of bactericidal device bottom passes through the 13rd valve after degerming
Into the 5th commutator, the 5th commutator is adjusted, chemical industry filtrate enters third surge tank or pressing filter, third surge tank
Chemical industry filtrate pressing filter is entered by the 5th feed pump and the 12nd valve, pressing filter is by filtered chemical industry
Material is put into the 4th solid-holding pond, and the chemical industry filtrate of pressure filtration motor spindle enters recycling Trunk Line return by the 11st valve and sinks
Pond drops, and the chemical industry filtrate on pressing filter top enters the second surge tank, and the liquid in the second surge tank is reusable
Chemical liquid, a part of chemical liquid enter collecting tank by the second buffering pot bottom, and a part of chemical liquid is as flushing liquor
Pass through the 9th valve respectively by the 4th feed pump, the tenth valve, the 6th valve and the 15th valve return to chamber type filter,
Pressing filter squeezes filter and belt filter press, to realize to chamber type filter, pressing filter, squeeze filter
And the flushing of belt filter press.
The system uses multiple filtration plant, effective filtering to chemical industry filtrate is realized；Road is changed provided with multiple
Device and valve, so that user be allowed to adjust pipeline as needed；Main filtration cycle, recycling circulation and backwash is constituted to follow
Ring three recirculates, and keeps the filtering of waste liquid more thorough, and can each filter device of auto-flushing, prevent chemical material from blocking
The occurrence of device.
Wherein, flocculant is accommodated in settling tank makes chemical industry slurry be easy de- liquid.
Wherein, belt filter press, including rack, Gravity Separation area, expression separation area and drainage set, Gravity Separation
Area, expression separation area and drainage set are mounted on the rack, and Gravity Separation area includes feed inlet, the first driving motor, first
Deviation correcting device, support roller and filter bag, expression separation area include the second driving motor, third driving motor, prepressing device, on
Filter-pressing strap, lower filter-pressing strap, idler roller, discharge rolls, dehydration roll system, carrying roller, the second deviation correcting device and third deviation correcting device, to de-
The chemical industry slurry of liquid enters Gravity Separation area by feed inlet, and chemical industry slurry is sloughed most ofization by gravity on filter bag
Work filtrate, the first driving motor drive support roller rotation to drive filter bag cycle rotation, and the first deviation correcting device passes through regulating roller tune
It is had suffered the running route of strainer, filter bag is made to be in certain tensioning state and prevents its roll release, chemical industry slurry passes through gravity point
From entering expression separation area behind area, be tensioned roller, dehydration roll, carrying roller and discharge rolls of upper filter-pressing strap and lower filter-pressing strap support to be formed
Expression separation area, the second driving motor and third driving motor driving discharge rolls realize the continuous loop of upper filter-pressing strap and lower filter-pressing strap
Around movement, chemical industry slurry enters the opening for being distributed in that filter-pressing strap and lower filter-pressing strap are formed, under the action of two prepressing devices
Filter cake is preliminarily formed, filter cake sloughs extra chemical industry filtrate to form chemical material by dehydration roll system again, by discharging
Enter the first solid-holding pond after roller, the second deviation correcting device and third deviation correcting device are laid filter-pressing strap and lower filter-pressing strap respectively, passed through
Regulating roller adjusts the running route of filter bag, so that filter-pressing strap and lower filter-pressing strap is in certain tensioning state and prevents it de-
Roller enters drainage set in the chemical industry filtrate that Gravity Separation area and expression separation area are sloughed, and the chemical industry filtrate in drainage set is returned
Return settling tank.
Traditional filter press cannot achieve the independent control to Gravity Separation and filters pressing separation, and above-mentioned belt filter press is provided with
Individual Gravity Separation area realizes being implemented separately for Gravity Separation and filters pressing separation, and individual Gravity Separation area can extend
The Gravity Separation time effectively increases filters pressing effect to provide working foundation for the separation of filters pressing below；Deviation correcting device is by tuningout
Combined with tensioning function so that each strainer will not roll release and sideslip, and the tensioning degree of each strainer can be adjusted in real time.
Wherein, dehydration roll system includes 5 dehydration rolls, will be laid in respectively in upper filter-pressing strap and lower filter-pressing strap, by upper pressure
Strainer and lower filter-pressing strap, which squeeze, to be overlapped and forms S-shaped shape, wherein and the first dehydration roller diameter is 500mm, is located in lower filter-pressing strap,
Second dehydration roller diameter is 400mm, is located in upper filter-pressing strap, and it is 360mm that third, which is dehydrated roller diameter, is located in lower filter-pressing strap, the
Four dehydration roller diameters are 330mm, are located in upper filter-pressing strap, and the 5th dehydration roller diameter is that 220mm is located in lower filter-pressing strap.
The setting of above-mentioned dehydration roll system can make filter cake extruded while be sheared, and then reinforce dehydrating effect；5
The design of the diameter of dehydration roll realizes the change of gradient of pressure, prevents while filters pressing effective to filter cake due to initial stage slurry
The phenomenon that aqueous higher caused slurry is run out of.
Wherein, upper filter-pressing strap and lower filter-pressing strap use polyester material, and use twill.
The adhesion strength of polyester material is 2.1N/m2, it is small to filter cake adhesion strength using the strainer of polyester material, make belt pressure
It works with squeezing filtering function continuous effective.
Wherein, the top of upper filter-pressing strap upper surface is provided with multiple insufflation showerheads, filter-pressing strap in flushing, in lower filter-pressing strap
The lower part of lower surface is provided with multiple insufflation showerheads, rinses lower filter-pressing strap, and insufflation showerhead uses flushing liquor to be sprayed, rushes
Chemical industry filtrate after washing enters drainage set.
Above-mentioned flusher realizes the automatic cleaning of upper and lower filter-pressing strap, prevents the damage of strainer.
Wherein, chamber type filter is made of multiple filter boxs stacking, and jet pipe is arranged inside each filter box, movable plate, filter plate, determines
Plate, rack and transmission device, jet pipe setting arranges multiple spouts on filter box top, jet pipe, flushing liquor is sprayed to filter plate, filters
Plate has multiple, and movable plate, filter plate, fixed board are arranged in filter box from top to bottom, and movable plate and filter plate are arranged on the guide rail of rack, fixed
Plate is fixed at the bottom of rack, and strainer, movable plate and filter plate are arranged on filter plate by transmission device and connects realization filter plate
Linkage, movable plate is mobile to fixed board under the drive of transmission device and squeezes filter plate, in the process of running, between filter plate between
Away from be it is equivalent, between filter box use metal contact seal, the contact surface between filter box occurs by certain external pressure
Deformation, to make contact surface fit closely and fluid is prevented to pass through.
Wherein, chamber type filter is made of three filter box stackings, has filter aid in filter box.
Wherein, jet pipe is evenly distributed with multiple spray orifices, and flushing liquor is sprayed, and mixes with filter aid, in gravity and pressure
Under the action of, mixed liquor flows to the exit of filter box through filter plate.
Wherein, it is provided with pressure gauge on each filter box, to measure the pressure of filter box, avoids the generation of leakage.
Wherein, according to the effective filtration area of filter plate, judge whether filter plate works normally, the effective filtration area A of filter plate
It is to be calculate by the following formula to obtain,
In formula, W is the quality for the chemical industry filtrate filtered per hour, and γ rate of filtration coefficient of reliability, C is to test filtering velocity
Degree, T are the working time, and F is filtering range of value；
Effectively filtering accounting △ is calculated,
In formula, A0The entire area of filter plate；
As 0.3 < △≤0.6, filter plate needs to clean；
As △≤0.3, filter plate is needed replacing.
Wherein, compared according to the power P of transmission device and current driving power, to judge that current transmission device is
No normal work, the power P of transmission device are calculate by the following formula to obtain,
In formula, V is the movement speed of movable plate, and q is the unit weight of drive chain, and Λ is transmission device
The center of both ends sprocket wheel is away from ω is the Friction drag coefficient of motion of chain, and G is filter plate weight, and μ is the transmission efficiency of transmission device, ηm
For the mobile coefficient of friction of filter plate.
Wherein, squeezing filter includes sparge pipe, cylindrical shell, screw rod vane, driving motor and convergence plate, cylinder
There is draining hole on shape housing central section, the top among cylindrical shell is arranged in sparge pipe, and sparge pipe is provided with multiple spray heads,
For flushing liquor to be sprayed to cylindrical shell, the draining hole on cylindrical shell is rinsed, blocking draining hole is prevented, in cylinder
Discharge port and feed inlet is arranged in shape shell both ends, and driving motor is arranged in discharge port one end, and discharge port is provided with baffle and moves
Stationary ring net, sound looped network include determining ring plate and rotating ring piece, determine ring plate and are spaced apart from each other with rotating ring piece, have certain time of filtration, move
Ring plate by rotating ring piece and determines the relative motion between ring plate, to change in the downward certain track eccentric motion of promotion of screw rod vane
Work filtrate generates extrusion, to improve the effect that is separated by filtration of material, convergence plate is arranged there are two being total in cylindrical shell
Intermediate bottom, two convergence plates have certain gradient, and form liquid outlet, and chemical industry filtrate is collected discharge.
Pressing filter includes driving motor, clutch, transmission shaft, dispensing head, ball bearing, left end cap, outer cylinder main body, close
Cover plate, sealing spacer block, strainer, inner cylinder main body, drain pipe, packing seal, right end cap, roller bearing, outer cylinder support, support bottom
Plate, collateral, discharge device for scraper and discharge box, driving motor is by clutch and is driven axis connection, transmission shaft and inner cylinder master
Body removably connects, and dispensing head is mounted on inner cylinder main body one end, dispensing head be connected to by bracket it is fixed on left end cap,
It is corresponding with each nozzle of outer cylinder main body, corresponding nozzle is dispersed on dispensing head, outer cylinder main body both ends are close by left end cap and right end cap
Envelope, outer cylinder main body are equipped with seal cover board, sealing spacer block are provided between inner cylinder main body and outer cylinder main body, inner cylinder body surfaces are set
There is strainer, strainer is supported plate by circumferential and radial unit wall surface and is divided into several filter elements, the wall surface of radial filter unit
It is parallel with inner cylinder main center axis and between it is angled, have interchangeable unit filter inserts, mistake in filter element
It filters unit and is equipped with drain pipe, inner cylinder main body two sides are equipped with ring body, are connected separately with left end shaft and right end outside the ring body of two sides
Axis, left end shaft and right end axis are fixedly connected with the inner ring of ball bearing and roller bearing respectively, the outer ring of ball bearing and roller bearing
It is fixedly connected respectively with left end cap and right end cap, right end cap offers feed inlet, and outer cylinder main body passes through collateral knot on outer cylinder support
Structure is connect with support baseboard, is additionally provided with discharge device for scraper between outer cylinder main body and inner cylinder main body, will be on filter element
Material scrapes and enters discharge box, and outer cylinder main body is provided with filtrate outlet.
Above-mentioned pressing filter have filter pressure big, good seal performance, continuous operation, full automatic working, in different cavity
The advantages that interior is using different operating pressures.
Wherein, pressing filter is contacted with chemical material inner cylinder main body, strainer, dispensing head, drain pipe, scraper discharging dress
It sets, discharge box is made of corrosion resistant stainless steel material, transmission shaft, ball bearing, left end cap, the outer cylinder not contacted with chemical material
Main body, seal cover board, sealing spacer block, packing seal, right end cap, roller bearing, outer cylinder support, support baseboard and collateral by carbon
Steel material is made.
Wherein, the chemical industry pulp separation system of material position judgement further includes main control computer and sensor, and main control computer connects
Receive the signal from sensor, and by the on-off of 15 valves of bus marco, the selection of 5 circulators, 6 feed pumps fortune
Turn power, chamber type filter transmission device driving power, the operating voltage of 3 driving motors of belt filter press, squeeze
The operating voltage of the driving motor of filter, the operating voltage of the driving motor of pressing filter.
Wherein, sensor includes speed probe, velocity sensor, flow sensor, pressure gauge, vibrating sensor and makes an uproar
Sonic transducer, speed probe are mounted on belt filter press, squeeze on the driving motor of filter and pressing filter, be used for
The revolving speed of driving motor is measured, velocity sensor is mounted on the movable plate of chamber type filter to measure its movement velocity, and flow velocity passes
At the filtrate (liquid of sensor chamber type filter, for detecting the flow velocity of filtrate, pressure gauge is mounted on the filter box of chamber type filter, adds
To measure pressure in the outer cylinder main body of pressure filter, vibrating sensor and noise transducer are mounted on the cylinder for squeezing filter
To measure the mechanical oscillation signal for squeezing filter and pressing filter in the outer cylinder main body of shape shell and pressing filter
And noise signal.
Wherein, main control computer has fuzzy control device and processor, and fuzzy control device includes difference engine, differential
Device, defuzzification interface, output quantity conversion module, inference machine, knowledge base, speed probe by the belt filter press measured, squeeze
The revolving speed of the driving motor of filter and pressing filter is supplied to difference engine, and the setting that difference engine inputs operator turns
Speed subtracts each other to obtain error value E with measurement revolving speed, and error value E obtains error rate dE/dt, error value E and mistake by differentiator
Poor change rate dE/dt is supplied to defuzzification interface, carries out blurring assignment to error value E and error rate dE/dt, respectively
It is provided to blurring error amount ME and blurring error change value MEC, blurring error amount ME and blurring error change value MEC
To inference machine, inference machine according in knowledge base input and output degree of membership vector value and reasoning from logic rule to blurring error
Value ME and blurring error change value MEC carries out fuzzy reasoning and obtains fuzzy control quantity MU, and output quantity conversion module is by Fuzzy Control
Amount MU processed is converted to practical control amount U, provides operating voltage to driving motor according to practical control amount U.
Wherein, fuzzy control device is programmable logic controller (PLC), the place of programmable logic controller (PLC) and main control computer
It manages and is communicated between device using RS232.
Wherein, be blurred the process of assignment specifically: according to selection parameter PL, PB of the linguistic variable of operator, PM,
PS, ZO, NS, NM, NB, BL respectively indicate positive super large, honest, center, it is just small, zero, bear in small, negative, bear big, negative super large, it is corresponding
Fuzzy set-n ,-n+1 ..., 0 ..., n-1, n }, n=4；
Determine quantizing factor, ke=n/e, wherein, keFor error amount quantizing factor, e is the worst error value of measurement, kec=
N/ec, kecFor error rate quantizing factor, ec is the worst error change rate of measurement,
If m≤keE≤m+1, m < n, then being blurred error amount ME is the k by rounding upeE；
If keE <-n, then being blurred error amount ME is-n；
If keE > n, then being blurred error amount ME is n；
If m≤kecE≤m+1, m < n, then being blurred error change value MEC is the k by rounding upecE；
If kecE <-n, then being blurred error change value MEC is-n；
If kecE > n, then being blurred error change value MEC is n.
Wherein, knowledge base includes database and rule base,
The fuzzy membership vector value of input, output variable is stored in database, this vector value is input, output quantity process
The set of corresponding value then can be used as subordinating degree function if corresponding domain is continuous after the discretizations such as corresponding domain, for
The fuzzy variable of input, subordinating degree function are stored in database, provide data to inference machine in fuzzy reasoning relationship.
Fuzzy rule is stored in rule base, fuzzy rule is the experience of operator's long-term accumulation and combines expertise
On the basis of formed, expressed by the vocabulary of relevant logical relation, such as if-then, else, end, and, or etc..
The rapid setting that can effectively realize parameter automatically by fuzzy control reduces the change tape repeatedly manually set
The inaccuracy of waste and precision in the efficiency come.
Wherein, uniform crossover in the circumferential direction of the cylindrical shell of filter or the outer cylinder main body of pressing filter is squeezed to be arranged
There are N number of vibrating sensor and N number of noise transducer, vibrating sensor machinery acquires vibration signal, noise transducer acquisition noise
Signal squeezes the cylindrical shell of filter and the outer cylinder of pressing filter by mechanical oscillation signal and noise signal judgement
Material position in main body.
Wherein, vibrating sensor uses FBG vibrating sensor, including FBG, cylinder barrel type elastic element and pick-up quality,
FBG is placed in inside cylinder barrel type elastic element on axis, and pick-up mass block is coaxially placed in the upper bottom cover of cylinder barrel type elastic element,
The vibration signal of FBG vibrating sensor output is filtered it by FBG vibration (FBG) demodulator, converts optical signals to telecommunications
Number, then vibration signal is acquired by capture card, the mechanical oscillation signal needed；Noise transducer uses pressure drag
Formula noise transducer.
Wherein, the cylindrical shell or pressing filter of filter are squeezed by mechanical oscillation signal and noise signal judgement
Outer cylinder main body in material position specific step is as follows:
Step 1, the collected road N mechanical oscillation signal and N road noise acoustical signal are filtered, remove garbage signal, obtains
Take the road N mechanical oscillation signal curve and N road noise acoustical signal curve；
Step 2, the road N mechanical oscillation signal curve and N road noise acoustical signal curve are fitted and obtain i-th of mechanical oscillation
Frequency function fizWith i-th of noise frequency function fic；
Step 3, average mechanical vibration frequency function f is calculatedzAnd average noise frequency function fc, i=1,2 ...,
N；
Step 4, sound level is calculated,
In formula, L is sound level intensities, and t is the time, and e is the truth of a matter of natural logrithm function, and lg is logarithmic function, F (fz) it is object
Impact force function between material, He(fc) it is structural response function, a is sound level weighting coefficient, σradSound radiation coefficient, ηsFor inside
Damped coefficient, d are the outer cylinder main body average thickness for squeezing the cylindrical shell or pressing filter of filter, and Re expression takes plural number
Real part；
Step 5, the curve of sound level intensities L is drawn, and extracts envelope signal, form envelope curve and envelope signal is carried out
Lower sample process carries out data compression；
Step 6, low-frequency reconfiguration is carried out to compressed data, obtains low-frequency reconfiguration signal；
Step 7, above-mentioned low-frequency reconfiguration signal is obtained by trained three layers of BP neural network with preparatory measurement
Be respectively at 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% material position low-frequency reconfiguration signal carry out
It compares, output squeezes the Realtime Level information of the cylindrical shell of filter or the outer cylinder main body of pressing filter.
The material position for squeezing the cylindrical shell of filter or the outer cylinder main body of pressing filter is a macroparameter, in real time
The material position situation of change for squeezing filter or pressing filter is accurately held, filter or pressing filter are squeezed for control
Load, prevent threadiness and block material generation and stablize whole system operation, it is particularly significant.
Embodiment described above only expresses one embodiment of the present invention, and but it cannot be understood as to this
The limitation of invention scope.It should be pointed out that for those of ordinary skill in the art, in the premise for not departing from present inventive concept
Under, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Claims (8)
1. a kind of chemical industry pulp separation system of material position judgement comprising 1 belt filter press, 1 chamber type filter, 1 plus
Pressure filter, 1 extruding filter, 1 bactericidal device, 1 settling tank, 1 waste liquid pool, 1 collecting tank, 4 solid-holding ponds, 3
A surge tank, 6 feed pumps, 5 road Ge Huan devices and 15 valves, it is characterised in that: settling tank accommodates chemical industry slurry, after sedimentation
Chemical industry slurry by sedimentation bottom of pond portion under the action of the first feed pump enter belt filter press, belt filter press will be after filters pressing
Chemical material be put into the first solid-holding pond, the chemical industry filtrate of generation enters recycling master by the 6th feed pump and the 14th valve
Pipeline returns to settling tank, and chemical industry filtrate (liquid arranged at settling tank top, chemical industry filtrate by the first valve by the second feed pump into
Enter first and change road device, adjust first and change road device, so that chemical industry filtrate is entered second and change road device or change road device into third, adjusts the
Two change road device, so that chemical industry filtrate is entered waste liquid pool or enter the second valve, after chemical industry filtrate passes through the second valve, entrance is box
Filter, the chemical industry filtrate of chamber type filter lower part enter recycling Trunk Line and return to settling tank, and chamber type filter will be filtered
Chemical material is put into the second solid-holding pond, and the chemical industry filtrate on chamber type filter top enters the first surge tank by third valve, delays
Enter third by passing through the 4th valve under the drive of third feed pump after punching and change road device, adjusts third and change road device, chemical industry filtrate
Road device is changed into the 5th valve or the 4th, chemical industry filtrate enters extruding filter after passing through the 5th valve, squeezes under filter
The chemical industry filtrate in portion enters recycling Trunk Line by the 7th valve and returns to settling tank, squeezes filter for filtered chemical material
It is put into third solid-holding pond, the chemical industry filtrate on top enters the 4th commutator by the 8th valve, adjusts the 4th commutator, chemical industry filter
Liquid enters bactericidal device or the 5th commutator, the chemical industry filtrate of bactericidal device bottom after degerming by the 13rd valve into
Enter the 5th commutator, adjust the 5th commutator, chemical industry filtrate enters third surge tank or pressing filter, third surge tank
Chemical industry filtrate enters pressing filter by the 5th feed pump and the 12nd valve, and pressing filter is by filtered chemical industry object
Material is put into the 4th solid-holding pond, and the chemical industry filtrate of pressure filtration motor spindle enters recycling Trunk Line by the 11st valve and returns to sedimentation
Pond, the chemical industry filtrate on pressing filter top enter the second surge tank, and the liquid in the second surge tank is reusableization
Work liquid, a part of chemical liquid enter collecting tank by the second buffering pot bottom, and a part of chemical liquid is logical as flushing liquor
The 4th feed pump is crossed to pass through the 9th valve, the tenth valve, the 6th valve and the 15th valve return chamber type filter respectively, add
Pressure filter squeezes filter and belt filter press, with realize to chamber type filter, pressing filter, squeeze filter with
And the flushing of belt filter press；
The system further includes main control computer and sensor, and main control computer receives the signal from sensor, and passes through bus
Control the selection of the on-off, 5 circulators of 15 valves, the running power of 6 feed pumps, chamber type filter transmission device
Driving power, the operating voltage of 3 driving motors of belt filter press, squeezes the operating voltage of the driving motor of filter, adds
The operating voltage of the driving motor of pressure filter；
Sensor includes vibrating sensor and noise transducer, and vibrating sensor and noise transducer are mounted on extruding filter
Cylindrical shell and pressing filter outer cylinder main body on to measure the mechanical vibration for squeezing filter and pressing filter
Dynamic signal and noise signal；
It squeezes uniform crossover in the circumferential direction of the cylindrical shell of filter or the outer cylinder main body of pressing filter and is provided with N number of vibration
Sensor and N number of noise transducer, vibrating sensor collection machinery vibration signal, noise transducer acquisition noise signal pass through
Mechanical oscillation signal and noise signal judgement squeeze in the cylindrical shell of filter and the outer cylinder main body of pressing filter
Material position；
Vibrating sensor uses FBG vibrating sensor, including FBG, cylinder barrel type elastic element and pick-up quality, FBG to be placed in circle
Inside column barrel type elastic element on axis, pick-up mass block is coaxially placed in the upper bottom cover of cylinder barrel type elastic element, and FBG vibration passes
The vibration signal of sensor output is filtered it by FBG vibration (FBG) demodulator, converts optical signals to electric signal, then passes through
Capture card is acquired vibration signal, the mechanical oscillation signal needed；Noise transducer is sensed using pressure resistance type noise
Device；
The cylindrical shell of filter or the outer cylinder master of pressing filter are squeezed by mechanical oscillation signal and noise signal judgement
Specific step is as follows for material position in body:
Step 1, the collected road N mechanical oscillation signal and N road noise acoustical signal are filtered, remove garbage signal, obtain the road N
Mechanical oscillation signal curve and N road noise acoustical signal curve；
Step 2, the road N mechanical oscillation signal curve and N road noise acoustical signal curve are fitted and obtain i-th of mechanical oscillation frequencies
Function fizWith i-th of noise frequency function fic；
Step 3, average mechanical vibration frequency function f is calculatedzAnd average noise frequency function fc, i=1,2 ..., N；
Step 4, sound level is calculated,
In formula, L is sound level intensities, and t is the time, and e is the truth of a matter of natural logrithm function, and lg is logarithmic function, F (fz) be material it
Between impact force function, He(fc) it is structural response function, a is sound level weighting coefficient, σradSound radiation coefficient, ηsIt is internally-damped
Coefficient, d are the outer cylinder main body average thickness for squeezing the cylindrical shell or pressing filter of filter, and Re indicates to take the reality of plural number
Portion；
Step 5, the curve of sound level intensities L is drawn, and extracts envelope signal, form envelope curve and lower pumping is carried out to envelope signal
Sample processing, carries out data compression；
Step 6, low-frequency reconfiguration is carried out to compressed data, obtains low-frequency reconfiguration signal；
Step 7, by above-mentioned low-frequency reconfiguration signal by trained three layers of BP neural network, point obtained with preparatory measurement
Other places are compared in the low-frequency reconfiguration signal of 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% material position,
Output squeezes the Realtime Level information of the cylindrical shell of filter or the outer cylinder main body of pressing filter.
2. a kind of chemical industry pulp separation system of material position judgement according to claim 1, it is characterised in that: sensor also wraps
Speed probe, velocity sensor, flow sensor, pressure gauge are included, speed probe is mounted on belt filter press, squeezes filtering
On the driving motor of machine and pressing filter, for measuring the revolving speed of driving motor, velocity sensor is mounted on box filtering
To measure its movement velocity on the movable plate of machine, at the filtrate (liquid of flow sensor chamber type filter, for detecting the stream of filtrate
Speed, pressure gauge are mounted in the outer cylinder main body of the filter box of chamber type filter, pressing filter to measure pressure.
3. a kind of chemical industry pulp separation system of material position judgement according to claim 2, it is characterised in that: main control computer
With fuzzy control device and processor, fuzzy control device includes difference engine, differentiator, defuzzification interface, output quantity conversion
Module, inference machine, knowledge base, speed probe by the belt filter press measured, squeeze the drive of filter and pressing filter
The revolving speed of dynamic motor is supplied to difference engine, and difference engine subtracts each other the setting speed that operator inputs and measurement revolving speed to obtain error
Value E, error value E obtain error rate dE/dt by differentiator, and error value E and error rate dE/dt are supplied to blurring
Interface carries out blurring assignment to error value E and error rate dE/dt, respectively obtains blurring error amount ME and blurring
Error change value MEC, blurring error amount ME and blurring error change value MEC are supplied to inference machine, and inference machine is according to knowledge
Input and output degree of membership vector value and reasoning from logic rule in library is to blurring error amount ME and blurring error change value
MEC carries out fuzzy reasoning and obtains fuzzy control quantity MU, and fuzzy control quantity MU is converted to practical control amount by output quantity conversion module
U provides operating voltage to driving motor according to practical control amount U.
4. a kind of chemical industry pulp separation system of material position judgement according to claim 3, it is characterised in that: fuzzy control dress
It is set to programmable logic controller (PLC), is communicated between programmable logic controller (PLC) and the processor of main control computer using RS232.
5. a kind of chemical industry pulp separation system of material position judgement according to claim 1, it is characterised in that: belt filters pressing
Machine, including rack, Gravity Separation area, expression separation area and drainage set, Gravity Separation area, expression separation area and drain dress
It sets and is mounted on the rack, Gravity Separation area includes feed inlet, the first driving motor, the first deviation correcting device, support roller and filtering
Band, expression separation area include the second driving motor, third driving motor, prepressing device, upper filter-pressing strap, lower filter-pressing strap, idler roller,
The chemical industry slurry of discharge rolls, dehydration roll system, carrying roller, the second deviation correcting device and third deviation correcting device, liquid to be taken off passes through feed inlet
Into Gravity Separation area, chemical industry slurry is sloughed most of chemical industry filtrate by gravity on filter bag, and the first driving motor drives
Dynamic support roller rotation drives filter bag cycle rotation, and the first deviation correcting device is adjusted the running route of filter bag by regulating roller, made
Filter bag is in certain tensioning state and prevents its roll release, and chemical industry slurry enters expression separation area after passing through Gravity Separation area,
Be tensioned roller, dehydration roll, carrying roller and discharge rolls of upper filter-pressing strap and lower filter-pressing strap support to form expression separation area, the second driving electricity
Machine and third driving motor driving discharge rolls realize the continued circling campaign of upper filter-pressing strap and lower filter-pressing strap, and chemical industry slurry, which enters, to be divided
It is distributed in the opening that filter-pressing strap and lower filter-pressing strap are formed, preliminarily forms filter cake under the action of two prepressing devices, filter cake leads to again
It crosses dehydration roll system and then sloughs extra chemical industry filtrate to form chemical material, the first solid-holding pond is entered after discharge rolls, the
Two deviation correcting devices and third deviation correcting device lay filter-pressing strap and lower filter-pressing strap respectively, and the operation of filter bag is adjusted by regulating roller
Route makes filter-pressing strap and lower filter-pressing strap be in certain tensioning state and prevents its roll release, in Gravity Separation area and squeezing point
Enter drainage set from the chemical industry filtrate that area is sloughed, the chemical industry filtrate in drainage set returns to settling tank.
6. a kind of chemical industry pulp separation system of material position judgement according to claim 1, it is characterised in that: chamber type filter
It is made of multiple filter boxs stacking, setting jet pipe, movable plate, filter plate, fixed board, rack and transmission device, jet pipe inside each filter box
Multiple spouts are arranged in setting on filter box top, jet pipe, and flushing liquor is sprayed to filter plate, filter plate have it is multiple, it is movable plate, filter plate, fixed
Plate is arranged in filter box from top to bottom, and movable plate and filter plate are arranged on the guide rail of rack, and fixed board is fixed at the bottom of rack,
Strainer, movable plate and filter plate are set on filter plate and connect the linkage for realizing filter plate by transmission device, movable plate is in transmission device
It is mobile to fixed board and squeeze filter plate under drive, in the process of running, the spacing between filter plate be it is equivalent, used between filter box
Metal contact seal makes the contact surface between filter box deform, so that contact surface be made closely to paste by certain external pressure
Merge and fluid is prevented to pass through.
7. a kind of chemical industry pulp separation system of material position judgement according to claim 1, it is characterised in that: squeeze filter
Including sparge pipe, cylindrical shell, screw rod vane, driving motor and convergence plate, cylindrical shell has draining hole on middle part,
The top among cylindrical shell is arranged in sparge pipe, and sparge pipe is provided with multiple spray heads, for flushing liquor to be sprayed to cylindrical shape
Shell, rinse cylindrical shell on draining hole, prevent blocking draining hole, cylindrical shell both ends setting discharge port and
Feed inlet, driving motor are arranged in discharge port one end, and discharge port is provided with baffle and sound looped network, and sound looped network includes determining ring
Piece and rotating ring piece are determined ring plate and are spaced apart from each other with rotating ring piece, have certain time of filtration, and rotating ring piece is downward in the promotion of screw rod vane
Certain track eccentric motion by rotating ring piece and determines the relative motion between ring plate, extrusion is generated to chemical industry filtrate, to mention
High material is separated by filtration effect, and there are two being total to the bottom among cylindrical shell is arranged in, two convergence plates have in convergence plate
Certain gradient, and liquid outlet is formed, chemical industry filtrate is collected into discharge.
8. a kind of chemical industry pulp separation system of material position judgement according to claim 1, it is characterised in that: pressing filter
Including driving motor, clutch, transmission shaft, dispensing head, ball bearing, left end cap, outer cylinder main body, seal cover board, sealing spacer block, filter
Net, inner cylinder main body, drain pipe, packing seal, right end cap, roller bearing, outer cylinder support, support baseboard, collateral, scraper discharging dress
It sets and discharge box, driving motor is removably connect with inner cylinder main body by clutch and transmission axis connection, transmission shaft, distributed
Head is mounted on inner cylinder main body one end, dispensing head be connected to by bracket it is fixed on left end cap, with each nozzle pair of outer cylinder main body
It answers, corresponding nozzle is dispersed on dispensing head, outer cylinder main body both ends are sealed by left end cap and right end cap, and outer cylinder main body is equipped with close
Cover plate, be provided with sealing spacer block between inner cylinder main body and outer cylinder main body, inner cylinder body surfaces are equipped with strainer, strainer by circumferential and
Radial unit wall surface is supported plate and is divided into several filter elements, and the wall surface of radial filter unit is equal with inner cylinder main center axis
Row and between it is angled, have interchangeable unit filter inserts in filter element, filter element is equipped with drain pipe, interior
Cylinder main body two sides are equipped with ring body, and left end shaft and right end axis, left end shaft and right end axis difference are connected separately with outside the ring body of two sides
It is fixedly connected with the inner ring of ball bearing and roller bearing, the outer ring of ball bearing and roller bearing is solid with left end cap and right end cap respectively
Fixed connection, right end cap offer feed inlet, and outer cylinder main body is connect by collateral structure on outer cylinder support with support baseboard, outer cylinder master
It is additionally provided with discharge device for scraper between body and inner cylinder main body, the material on filter element is scraped and entered discharge box, outside
Cylinder main body is provided with filtrate outlet.
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