CN106087600A - Paper pulp based on PLC water suction control system - Google Patents
Paper pulp based on PLC water suction control system Download PDFInfo
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- CN106087600A CN106087600A CN201610488787.XA CN201610488787A CN106087600A CN 106087600 A CN106087600 A CN 106087600A CN 201610488787 A CN201610488787 A CN 201610488787A CN 106087600 A CN106087600 A CN 106087600A
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J5/00—Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch-moulds
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25268—PLD programmable logic device
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
A kind of paper pulp based on PLC water suction control system, including PLC, liquid crystal touch screen, motor driver, vacuum pump, filtrate pump, white water chest, suction motor, filtrate pump motor, wet end suction flat box, suction couch roll, top felt suction flat box, lower felt suction flat box, house steward and preposition moisture trap.This system uses touch screen and PLC to discharge the absorption of paper pulp moisture and is controlled, after vacuum pump uses PLC to control, the rotating speed of vaccum pump motor just can be adjusted in real time according to the rate of air sucked in required needed for vacuum, when vacuum pump surplus capacity is well beyond production technology demand, PLC can reduce vacuum pump rotating speed, thus reach energy-conservation purpose, improve reliability of operation simultaneously, there is dependable performance, energy-conservation, control simple, control accuracy advantages of higher, have and preferably promote demonstration value, additionally, the motility of software also helps transformation and the upgrading of equipment.
Description
Technical field
The present invention relates to electromechanical equipment control field, particularly relate to a kind of paper pulp based on PLC water suction control system.
Background technology
Paper industry is one of national economy important foundation raw material industry, and the level of consumption of paper and cardboard has become measurement
One modernization of the country level and the important symbol of civilization degree.It is technology-intensive notable with scale and benefit that paper industry has fund
Feature, its interrelationship between industries is big, and bigger market capacity and development potentiality have become and pull forestry, agricultural, machine-building, change
Work, automatically control, print, pack, the important force of the industry development such as environmental protection, form the growth that Chinese national economy development is new
Point.
Paper industry, with regenerated fibers such as protophyte fiber and waste paper such as timber, bamboo, phragmites communiss as raw material, can partly substitute
The non-renewable resources such as plastics, iron and steel, non-ferrous metal, are that by sustainable development, the important industry of economy capable of circulation, tool
Possess exuberant vitality.Meanwhile, along with developing rapidly of the industries such as journalism, book and periodical printing, cultural information, commodity packaging,
Paper industry demand constantly expands.2009 start, and China's papermaking yield has exceeded the U.S., become the first in the world papermaking big country,
But China's paper consumption figure also has the biggest room for promotion.Along with expanding economy, it is contemplated that from 2010 to 2015 years, China will become
First big country of World Paper consumption, paper-making industry has bigger development potentiality in China.
Paper product can have different classification according to different standards.By product purpose can be divided into industrial paper,
Cultural paper and the big series of paper for daily use three, wherein industrial paper includes white card, ash card, kraft paper etc.；Cultural paper includes copper
Millboard, wood-free paper, no carbon paper, newsprint, writing paper, heat-sensitive paper etc.；By production technology can be divided into again coating paper with not
Coating paper.
Slurry series products can be divided into wood pulp, bamboo pulp and straw pulp etc. according to raw material difference.
The raw material of papermaking mainly has two kinds: one is fibrous plant, and a kind of is exactly to compare now giving up of environmental protection
Paper is reclaiming.The first raw material papermaking is more more complicated, first to shred, and carries out high temperature steaming at high concentration aqueous alkali, also wants
Remove, through the machinery such as CX sieve, high-frequency vibration sieve, wash engine, pressure filter, the aqueous alkali contained in former oar, then bleach.Bleaching
Add water by washing be made into 0.03% oar liquid just can be with papermaking. the second just simple a bit.By waste paper, industry dioxygen
Water, deinking agent, alkali, water prepare by a certain percentage, beat the regular hour with hydraulic pulper；Finally just may be used with vanning sieve decontamination
With papermaking.The most how papermaking, principle is just as, it is simply that the fiber of paper making raw material is smashed, then through high temperature from
New combination.
The technological process of papermaking is made up of following several key links:
Pulping section: material choice → steaming and decocting separation fiber → washing → bleaching → washing and screening → concentrate or be copied into lodicule → storage
Standby；
Copy paper section: the streaming of the mixing → paper stock of the scattered slurry → removal of impurity → refining → various additive → paper stock of pulling an oar → prepare →
Head case → wet end → press section → drying section → top sizing → be dried → press polish → coil into paper；
Coating section: bodystock paper → coating machine be coated with → be dried → batches → roll up → supercalendering；
Processing sections: rewinding → cut flat board (or reel) → sorted and packaged → warehouse-in terminates.
Modern Paper making procedure can be divided into slurrying, modulate, manufacture paper with pulp, the key step such as processing:
1. the first step that process slurrying is papermaking of slurrying, the method typically converting wood into paper pulp has mechanical pulping method, change
Length of schooling slurry processes and semichemical pulping method etc. three kinds.
2. another emphasis being modulated to papermaking of modulated process paper stock, paper complete after intensity, tone, the quality of printing,
The length of paper pot-life is the most relevant with it.
The most common modulated process is broadly divided into following three steps: a. scattered slurry b. making beating c. and adds glue and filling.
3. the groundwork of process of manufacturing paper with pulp copy paper department is by dilute paper stock so that it is uniform interweave and dehydration, then drying,
Press polish, coil paper, cut, sort, pack, therefore the most common flow process is as follows:
A. modulated paper stock is diluted to relatively low concentration by the screening of paper stock again, and by screening installation, screening out again is miscellaneous
Thing and the fibre bundle that do not dissociates, to keep quality and protection equipment.
B. wet end makes paper stock from the beginning case flow out on the copper mesh or plastic wire of circulation and be distributed uniformly and interweave.
C. the l Water Paper that wire side is removed by press section guide to one with two of felt rolling rumbles between, the extrusion of mat rolling rumble and felt
Water sorption, makees l Water Paper further dehydration, and makes papery relatively tight, to improve paper, increase intensity.
D. drying section is due to the l Water Paper after squeezing, and its water content is still up to 52-70%, the most cannot recycle machine
Tool power presses moisture removal, therefore changes and allow l Water Paper drum surface of logical heat steam in many make paper be dried.
E. press polish is due to the l Water Paper after squeezing, and its water content is still up to 52-70%, the most cannot recycle machinery
Power presses moisture removal, therefore changes and allow l Water Paper drum surface of logical heat steam in many make paper be dried.
F. coil paper is due to the l Water Paper after squeezing, and its water content is still up to 52-70%, the most cannot recycle machinery
Power presses moisture removal, therefore changes and allow l Water Paper drum surface of logical heat steam in many make paper be dried.
G. cut, sort packaging: the paper roll being rolled into tubular before taking is branched, is cut into many pieces of paper with trimmer, then through people
Sorting of work or machinery, rejects the paper having breakage or stain, is finally bundled into a bag (being generally termed to make) by every 500.
Programmable logic controller (PLC) abbreviation PLC(English full name: Programmable Logic Controller).Along with
The development of science and technology, for adapting to multi items, a kind of novel industry control that the demand of small lot batch manufacture and producing grows up
Device processed.Programmable Logic Controller is the electronic system of a kind of digital operation, applies the most in industrial settings and designs.It
The memorizer that employing can program, be used for perform storage logical operations and sequential control, regularly, counting and arithmetical operation
Deng operation instruction, and by numeral or simulation input (I) and export (O) interface, control various types of plant equipment or
Production process.
The vacuum pump that wet end of machine dewatering system is conventional has liquid-ring type and roots-type.For improving wet end and the l Water Paper of press section
Page mass dryness fraction and deal with forming net and woollen blanket bad running status long afterwards, paper plant can configure the vacuum pump that power is more than needed.But
According to technological requirement, the vacuum level requirements of water absorber is differed by each position, thus makes vacuum pump configuration need with actual motion
Ask inconsistent.Existing paper pulp water suction system controls the most extensive, causes that power of motor is big, energy consumption is high, and is unfavorable for energy-conservation
Reduce discharging.There is presently no and report the document that PLC controls to be used for paper pulp water suction.
Summary of the invention
The present invention provides a kind of paper pulp based on PLC water suction control system, uses touch screen and PLC to pulp-water
The absorption discharge divided is controlled, after vacuum pump uses PLC to control, so that it may carry out according to the rate of air sucked in required needed for vacuum
Adjusting the rotating speed of vaccum pump motor in real time, when vacuum pump surplus capacity is well beyond production technology demand, PLC can reduce
Vacuum pump rotating speed, thus reach energy-conservation purpose, improve reliability of operation simultaneously, there is dependable performance, energy-conservation, control letter
Single, control accuracy advantages of higher, has and preferably promotes demonstration value, it addition, the motility of software also helps changing of equipment
Make and upgrade.
Technical solution of the present invention is:
A kind of paper pulp based on PLC water suction control system, including PLC, liquid crystal touch screen, motor driver, vacuum
Pump, filtrate pump, white water chest, suction motor, filtrate pump motor, wet end suction flat box, suction couch roll, top felt vacuum
Suction box, lower felt suction flat box, house steward and preposition moisture trap；
Wet end suction flat box, suction couch roll, top felt suction flat box and lower felt suction flat box connect with a house steward,
House steward is connected with preposition moisture trap, and preposition moisture trap is connected with vacuum pump, preposition moisture trap also with white water chest
Connect, the pipeline that preposition moisture trap is connected with white water chest is additionally provided with filtrate pump；Vacuum pump connects suction motor,
Filtrate pump connects filtrate pump motor, and suction motor and filtrate pump motor are connected with motor driver respectively, electronic
Machine driver is connected with PLC, and PLC is connected with liquid crystal touch screen.
Described wet end suction flat box includes the suction box main body being provided with panel, and the upper and lower surface of this panel is equipped with
The protective layer being made of ceramic materials, and be also coated with for preventing the waterproof of pipe leakage at the whole outer surface of suction channel
Sealant.
It is respectively equipped with axle and rotor in described vacuum pump, further respectively has wind pipe and wind-supplying mouth, and this discharge pipe
Road is additionally provided with cooling coil, this cooling coil is further fixed on fin.
Described vacuum pump is provided with exhauster regulating valve；Described filtrate pump is provided with filtrate pump control valve；PLC is by control
Flow is controlled by control valve opening processed.
Described motor driver include single-chip microcomputer, drive module, functional module, communication module, fault detection module and
Protection module, drives module, functional module, communication module, fault detection module and protection module to be all connected with single-chip microcomputer, drives
Module is connected with power transfer module and motor respectively；
Functional module includes: alarm lamp, ring device vibration alarming module, current detection module, USB module and memory module；
Communication module includes: RS485 module, Zigbee module, RS232 module and Usb module；
Protection module includes: can protect the overvoltage of driver when can preserve the under-voltage memory module of corresponding data, overvoltage time under-voltage
Driver out-of-work high pressure can be controlled during protection module, high pressure and shut down module and overheat protector module.
Described protection module is alerted by functional module when motor breaks down, particularly as follows: when under-voltage, report
Alert display lamp red light Chang Liang, until not having electricity；When overvoltage, the alternately flicker of alarm lamp reddish yellow always；When high pressure, driver
Quitting work, alarm lamp takes on a red color flicker；When excess temperature, alarm lamp is yellow Chang Liang；Ring when alarm lamp is bright
Device vibration alarming module carries out buzzing warning simultaneously.
Described RS485 module is used for wired connection；Described Zigbee module is for the radio communication of motor driver；
Described RS232 module configures for serial ports connection；Described Usb module is handed over extraneous data for motor driver
Change；Described fault detection module can carry out self-inspection to motor driver, quickly determines the event of stepping motor driver
Barrier point, clear failure position and type.
Described current detection module completes current acquisition and detection by current/voltage detection chip MAX4172；Work as motor
Real work electric current more than or equal to the thresholding alarm of detection electric current, until failture evacuation, alarm release after system reset.
The control process of described PLC is: after PLC initializes, and completes distance and sets, selects automatically
Or after the manual method of operation, then system of seeing is the most faulty or whether arrives initial point, performs automatic or manual operation respectively；
During performing automatically to come and go operation by setpoint distance, after centre performs opening operation, the system side of remaining on
To, run to setpoint distance, keep display, the most out of service；After operating when performing to reset, first system is run display and is returned
Zero, the most out of service；
Performing manual run, after arriving setpoint distance, system keeps display, and out of service；Perform disconnected in running
Opening operation, direction is constant, and after arriving setpoint distance, system keeps showing and out of service；When performing the operation that resets, then run aobvious
Show zero, the most out of service.
The control method of this system comprises the following steps:
1. operator complete the relevant setting of motor by liquid crystal touch screen, and motor driver just completes motor
Often driving, current detection module completes current acquisition and detection；
2. paper pulp online, wet end suction flat box, suction couch roll, top felt suction flat box and the lower felt being positioned on paper machine
Suction flat box carries out water sorption to paper pulp, in house steward collects preposition moisture trap, and preposition moisture trap pair
The air water collected carries out centrifugation, and top is gas, and bottom is filtrate；
3. PLC controls vacuum pump and isolated gas carries out extraction effect, and PLC controls filtrate pump to separation
The filtrate gone out is extracted, and is discharged to white water chest；
4. show the behavior pattern of current motor on liquid crystal touch screen in real time, and adjusted by PLC according to practical situation
The size of amount of restriction, the absorption discharge to paper pulp moisture is controlled.
Beneficial effects of the present invention:
1, using touch screen and PLC to discharge the absorption of paper pulp moisture to be controlled, vacuum pump uses PLC control
After system, so that it may adjust the rotating speed of vaccum pump motor in real time according to the rate of air sucked in required needed for vacuum, big at vacuum pump surplus capacity
Time greatly beyond production technology demand, PLC can reduce vacuum pump rotating speed, thus reach energy-conservation purpose, improve simultaneously
Reliability of operation, have dependable performance, energy-conservation, control simple, control accuracy advantages of higher, there is demonstration valency of preferably promoting
Value, it addition, the motility of software also helps transformation and the upgrading of equipment；
2, can be carried out with stepper motor driver by RS485 module, Zigbee module, RS232 module and Usb module
The communication of various ways, the deficiency overcoming existing physical connection to communicate, make stepper motor driver can adapt to different industry
Demand；
3, fault detection module can carry out self-inspection to stepping motor driver, finds the hidden danger of driver in time, rapidly
Determine the trouble point of stepping motor driver, clear failure position and type, facilitate the regular maintenance device of driver；
4, it is provided with cooling coil and fin, heat exchange surface area during vacuum pump work can be improved, improve its heat exchange efficiency, from
And significantly reduce the operating temperature of vacuum pump, prevent it from catabiosis occurring, extend the service life of vacuum pump；
5, the present invention is provided with the protective layer being made of ceramic materials in the upper and lower surface of wet end vacuum suction box face plate, due to
Ceramic material has the feature of high rigidity, high-wearing feature and high oxidative, and therefore, it is under the use not affecting suction box, gram
Take the defect that wet end vacuum suction box face plate hardness is low and the most wear-resisting；
6, protection module is alerted by functional module when stepping motor breaks down, can be effective under different voltage
Protection motor driver without damage, extend the service life of motor driver；
7, the system structure of the present invention is simple, and easy to operate, reasonable in design, reliable, maintenance cost is low, and production cost is low
Honest and clean.
Accompanying drawing explanation
Fig. 1 is the structural representation of present invention paper pulp based on PLC water suction control system；
Fig. 2 is the structural representation of motor driver in present invention paper pulp based on PLC water suction control system；
Fig. 3 is the program flow chart of PLC in present invention paper pulp based on PLC water suction control system；
Wherein, the parts that reference is corresponding are entitled:
1-PLC controller, 2-liquid crystal touch screen, 3-motor driver, 4-filtrate pump motor, 5-suction motor, 6-
Filtrate pump, 7-vacuum pump, 8-filtrate pump control valve, 9-exhauster regulating valve, the preposition moisture trap of 10-, 11-wet end vacuum are inhaled
Felt suction flat box, house steward 15-, 16-white water chest under water tank, 12-suction couch roll, 13-top felt suction flat box, 14-.
Detailed description of the invention
Hereinafter the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
As it is shown in figure 1, a kind of paper pulp based on PLC water suction control system, including PLC, liquid crystal touch screen, electronic
Machine driver, vacuum pump, filtrate pump, white water chest, suction motor, filtrate pump motor, wet end suction flat box, vacuum lie prostrate
Roller, top felt suction flat box, lower felt suction flat box, house steward and preposition moisture trap；
Wet end suction flat box, suction couch roll, top felt suction flat box and lower felt suction flat box connect with a house steward,
House steward is connected with preposition moisture trap, and preposition moisture trap is connected with vacuum pump, preposition moisture trap also with white water chest
Connect, the pipeline that preposition moisture trap is connected with white water chest is additionally provided with filtrate pump；Vacuum pump connects suction motor,
Filtrate pump connects filtrate pump motor, and suction motor and filtrate pump motor are connected with motor driver respectively, electronic
Machine driver is connected with PLC, and PLC is connected with liquid crystal touch screen.
Described wet end suction flat box includes the suction box main body being provided with panel, and the upper and lower surface of this panel is equipped with
The protective layer being made of ceramic materials, and be also coated with for preventing the waterproof of pipe leakage at the whole outer surface of suction channel
Sealant.
It is respectively equipped with axle and rotor in described vacuum pump, further respectively has wind pipe and wind-supplying mouth, and this discharge pipe
Road is additionally provided with cooling coil, this cooling coil is further fixed on fin.
Described vacuum pump is provided with exhauster regulating valve；Described filtrate pump is provided with filtrate pump control valve；PLC is by control
Flow is controlled by control valve opening processed.
As in figure 2 it is shown, motor driver includes single-chip microcomputer, drives module, functional module, communication module, fault detect
Module and protection module, drive module, functional module, communication module, fault detection module and protection module all with single-chip microcomputer even
Connect, drive module to be connected with power transfer module and motor respectively；
Functional module includes: alarm lamp, ring device vibration alarming module, current detection module, USB module and memory module；
Communication module includes: RS485 module, Zigbee module, RS232 module and Usb module；
Protection module includes: can protect the overvoltage of driver when can preserve the under-voltage memory module of corresponding data, overvoltage time under-voltage
Driver out-of-work high pressure can be controlled during protection module, high pressure and shut down module and overheat protector module.
Protection module is alerted by functional module when motor breaks down, particularly as follows: when under-voltage, warning refers to
Show lamp red light Chang Liang, until not having electricity；When overvoltage, the alternately flicker of alarm lamp reddish yellow always；When high pressure, driver stops
Work, alarm lamp takes on a red color flicker；When excess temperature, alarm lamp is yellow Chang Liang；The device that rings when alarm lamp is bright shakes
Dynamic alarm module carries out buzzing warning simultaneously.
RS485 module is used for wired connection；Described Zigbee module is for the radio communication of motor driver；
RS232 module configures for serial ports connection；Usb module is for motor driver and the exchange of extraneous data；Fault
Detection module can carry out self-inspection to motor driver, quickly determines the trouble point of stepping motor driver, clearly event
Barrier position and type.
Current detection module completes current acquisition and detection by current/voltage detection chip MAX4172；Reality when motor
Border operating current is more than or equal to the thresholding alarm of detection electric current, until failture evacuation, alarm release after system reset.
As it is shown on figure 3, the control process of PLC is: after PLC initializes, completes distance and set, choosing
After selecting the automatic or manual method of operation, then system of seeing is the most faulty or whether arrives initial point, performs automatic or manual behaviour respectively
Make；
During performing automatically to come and go operation by setpoint distance, after centre performs opening operation, the system side of remaining on
To, run to setpoint distance, keep display, the most out of service；After operating when performing to reset, first system is run display and is returned
Zero, the most out of service；
Performing manual run, after arriving setpoint distance, system keeps display, and out of service；Perform disconnected in running
Opening operation, direction is constant, and after arriving setpoint distance, system keeps showing and out of service；When performing the operation that resets, then run aobvious
Show zero, the most out of service.
The control method of this system comprises the following steps:
1. operator complete the relevant setting of motor by liquid crystal touch screen, and motor driver just completes motor
Often driving, current detection module completes current acquisition and detection；
2. paper pulp online, wet end suction flat box, suction couch roll, top felt suction flat box and the lower felt being positioned on paper machine
Suction flat box carries out water sorption to paper pulp, in house steward collects preposition moisture trap, and preposition moisture trap pair
The air water collected carries out centrifugation, and top is gas, and bottom is filtrate；
3. PLC controls vacuum pump and isolated gas carries out extraction effect, and PLC controls filtrate pump to separation
The filtrate gone out is extracted, and is discharged to white water chest；
4. show the behavior pattern of current motor on liquid crystal touch screen in real time, and adjusted by PLC according to practical situation
The size of amount of restriction, the absorption discharge to paper pulp moisture is controlled.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a paper pulp based on PLC water suction control system, it is characterised in that include PLC, liquid crystal touch screen, electronic
Machine driver, vacuum pump, filtrate pump, white water chest, suction motor, filtrate pump motor, wet end suction flat box, vacuum lie prostrate
Roller, top felt suction flat box, lower felt suction flat box, house steward and preposition moisture trap；
Wet end suction flat box, suction couch roll, top felt suction flat box and lower felt suction flat box connect with a house steward,
House steward is connected with preposition moisture trap, and preposition moisture trap is connected with vacuum pump, preposition moisture trap also with white water chest
Connect, the pipeline that preposition moisture trap is connected with white water chest is additionally provided with filtrate pump；Vacuum pump connects suction motor,
Filtrate pump connects filtrate pump motor, and suction motor and filtrate pump motor are connected with motor driver respectively, electronic
Machine driver is connected with PLC, and PLC is connected with liquid crystal touch screen.
Paper pulp based on PLC water suction control system the most according to claim 1, it is characterised in that described wet end vacuum dehydration
Case includes the suction box main body being provided with panel, and the upper and lower surface of this panel is equipped with the protective layer being made of ceramic materials, and
Whole outer surface at suction channel is also coated with the waterproof sealing layer for preventing pipe leakage.
Paper pulp based on PLC water suction control system the most according to claim 1, it is characterised in that in described vacuum pump respectively
It is provided with axle and rotor, further respectively has in wind pipe and wind-supplying mouth, and this wind pipe and be additionally provided with cooling coil, cold at this
But it is further fixed on fin on coil pipe.
Paper pulp based on PLC water suction control system the most according to claim 2, it is characterised in that described vacuum pump is provided with very
Empty pump control valve；Described filtrate pump is provided with filtrate pump control valve；Flow is controlled by PLC by control and regulation valve opening
System.
Paper pulp based on PLC water suction control system the most according to claim 1, it is characterised in that described motor driver
Including single-chip microcomputer, drive module, functional module, communication module, fault detection module and protection module, drive module, function mould
Block, communication module, fault detection module and protection module are all connected with single-chip microcomputer, drive module respectively with power transfer module and
Motor connects；
Functional module includes: alarm lamp, ring device vibration alarming module, current detection module, USB module and memory module；
Communication module includes: RS485 module, Zigbee module, RS232 module and Usb module；
Protection module includes: can protect the overvoltage of driver when can preserve the under-voltage memory module of corresponding data, overvoltage time under-voltage
Driver out-of-work high pressure can be controlled during protection module, high pressure and shut down module and overheat protector module.
Paper pulp based on PLC water suction control system the most according to claim 5, it is characterised in that described protection module is at electricity
Alerted by functional module when motivation breaks down, particularly as follows: when under-voltage, alarm lamp red light Chang Liang, until not having
Electricity；When overvoltage, the alternately flicker of alarm lamp reddish yellow always；When high pressure, driver quits work, and alarm lamp is red
Chromatic flicker；When excess temperature, alarm lamp is yellow Chang Liang；Device vibration alarming module of ringing when alarm lamp is bright carries out honeybee simultaneously
Ring is reported to the police.
Paper pulp based on PLC water suction control system the most according to claim 5, it is characterised in that described RS485 module is used
In wired connection；Described Zigbee module is for the radio communication of motor driver；Described RS232 module is for serial ports even
Tap into row configuration；Described Usb module is for motor driver and the exchange of extraneous data；Described fault detection module can be right
Motor driver carries out self-inspection, quickly determines the trouble point of stepping motor driver, clear failure position and type.
Paper pulp based on PLC water suction control system the most according to claim 5, it is characterised in that described current detection module
Current acquisition and detection is completed by current/voltage detection chip MAX4172；When the real work electric current of motor is more than or equal to inspection
Survey the thresholding alarm of electric current, until failture evacuation, alarm release after system reset.
Paper pulp based on PLC water suction control system the most according to claim 1, it is characterised in that the control of described PLC
Process processed is: after PLC initializes, and completes distance and sets, after selecting the automatic or manual method of operation, then sees system
The most faulty or whether arrive initial point, perform automatic or manual operation respectively；
During performing automatically to come and go operation by setpoint distance, after centre performs opening operation, the system side of remaining on
To, run to setpoint distance, keep display, the most out of service；After operating when performing to reset, first system is run display and is returned
Zero, the most out of service；
Performing manual run, after arriving setpoint distance, system keeps display, and out of service；Perform disconnected in running
Opening operation, direction is constant, and after arriving setpoint distance, system keeps showing and out of service；When performing the operation that resets, then run aobvious
Show zero, the most out of service.
Paper pulp based on PLC water suction control system the most according to claim 1, it is characterised in that the control method of this system
Comprise the following steps:
1. operator complete the relevant setting of motor by liquid crystal touch screen, and motor driver just completes motor
Often driving, current detection module completes current acquisition and detection；
2. paper pulp online, wet end suction flat box, suction couch roll, top felt suction flat box and the lower felt being positioned on paper machine
Suction flat box carries out water sorption to paper pulp, in house steward collects preposition moisture trap, and preposition moisture trap pair
The air water collected carries out centrifugation, and top is gas, and bottom is filtrate；
3. PLC controls vacuum pump and isolated gas carries out extraction effect, and PLC controls filtrate pump to separation
The filtrate gone out is extracted, and is discharged to white water chest；
4. show the behavior pattern of current motor on liquid crystal touch screen in real time, and adjusted by PLC according to practical situation
The size of amount of restriction, the absorption discharge to paper pulp moisture is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610488787.XA CN106087600A (en) | 2016-06-29 | 2016-06-29 | Paper pulp based on PLC water suction control system |
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| CN201610488787.XA CN106087600A (en) | 2016-06-29 | 2016-06-29 | Paper pulp based on PLC water suction control system |
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| CN110676665A (en) * | 2019-10-18 | 2020-01-10 | 韦娜诗 | Wire pressing machine |
| CN111118941A (en) * | 2019-12-13 | 2020-05-08 | 王新民 | Monitoring alarm for vacuum suction box of paper machine and use method thereof |
| CN114775321A (en) * | 2022-04-29 | 2022-07-22 | 陕西科技大学 | Distributed high-vacuum suction box vacuumizing device for papermaking and control system |
| CN114775320A (en) * | 2022-04-29 | 2022-07-22 | 陕西科技大学 | Distributed vacuum suction box vacuumizing device for papermaking net part and control system |
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