CN106042630A - Electrical control system suitable for photogravure press drying system and control method - Google Patents
Electrical control system suitable for photogravure press drying system and control method Download PDFInfo
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- CN106042630A CN106042630A CN201610526125.7A CN201610526125A CN106042630A CN 106042630 A CN106042630 A CN 106042630A CN 201610526125 A CN201610526125 A CN 201610526125A CN 106042630 A CN106042630 A CN 106042630A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
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- 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
- G05B19/058—Safety, monitoring
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses an electrical control system suitable for a photogravure press drying system and a control method. The electrical control system comprises a touch screen, a programmable controller, an exhaust pipe constant voltage control system, multiple oven single-color drying control systems and a VOC detection control system. Each oven single-color drying control system is composed of a temperature control meter two-way communication control system and an electric air door preset control system. The invention further provides a control method of the above electrical control system suitable for the photogravure press drying system. The electrical control system is suitable for the photogravure press drying system and is high in device automation level, easy and reliable to operate and capable of increasing the safety operation coefficient, substantially lowering the energy consumption and decreasing the waste gas exhaust amount, and good conditions are provided for subsequently and thoroughly solving the VOC emission problem with low cost.
Description
Technical field
The present invention relates to intaglio press drying system, particularly relate to a kind of electricity being applicable to intaglio press drying system
Gas control system and control method.
Background technology
Intaglio press employing Rotary directly prints mode and prints, and forme direct engraving, on plate cylinder, is adopted
Ink is given with leaching ink or ink-jetting style.Owing to layer of ink is thick, it is contemplated that ink setting and solvent volatilization, it is necessary to have drying system.
The intaglio printing press sold in the market, relies primarily on operator and manually regulates drying system according to practical experience
Running status: manually the regulation new air door of each printing element and return air door reach the size of the most required intake, manually adjust
Save the exhaust door of parallel exhaust duct to reach the size of respective exhaust air rate, and make drying oven be in micro-vacuum state.But because of
Being multiple spot regulation for air draft, influence each other, between system each point, leeway is relatively big, easily causes drying oven exhaust gas leakage, is difficult to
Adjustment, so needing to strengthen exhaust air rate to guarantee that baking oven reduces leakage, then adds this only manually the most repeatedly adjustment with sensation and is
One is loaded down with trivial details and be difficult to the thing held, and experience can be absorbed in the predicament adjusting worse and worse not, so production exercise in actual production
Make personnel generally will not intense adjustment, in order to meet major part technique air quantity and the improvement of self working environment, the most all keep watch
Amount regulates bigger, and again regulates substantially without because product is different, not only adds and adds thermal energy consumption and air draft wind
Machine runs power, also increases input cost and run cost that follow-up VOC emission is administered simultaneously.Meanwhile, drying system is each
Printing element design temperature must manually set, easily on each colour cell temp controlled meter according to different requirement of every kind of Product Process
Specification error occurs, causes product quality accident.
In sum, existing drying system existing problems mainly have: each colour cell blast coupling difficulty, temperature setting easily occur
Error, exhaust air rate are excessive, VOC emission too high, follow-up improvement cost is big to add thermal energy consumption.The electric control system of this drying system is just
Design to solve the problems referred to above.
Summary of the invention
In view of this, the technical problem to be solved is: a kind of automatization level will be provided high, run and simply may be used
Lean on, safe operation coefficient can be improved, energy consumption, minimizing discharge amount of exhaust gas are greatly lowered, it is adaptable to intaglio press drying system
Electric control system.
The present invention also provides for being applicable to the electric control system control method of intaglio press drying system.
In order to achieve the above object, the present invention adopts the following technical scheme that and realizes:
It is applicable to the electric control system of intaglio press drying system, including touch screen, Programmable Logic Controller, exhaust duct
Control system of invariable pressure, some groups of baking oven monochrome drying control systems and VOC detecting and controlling system, described often group baking oven monochrome is dried
Control system is pre-seted control system by temp controlled meter both-way communication control system and MOD and forms, it is characterised in that:
Described touch screen and Programmable Logic Controller are in communication with each other by data wire connection；
Described exhaust duct control system of invariable pressure is by the blast detection mouth connection wind pressure transmitter being provided with in total exhaust duct, wind
Pressure transmitter signal output part is connected to Programmable Logic Controller, and Programmable Logic Controller connects the exhaust blower converter of total exhaust duct,
Signal transmits exhaust blower converter, and exhaust blower converter connects exhaust blower regulation air quantity；
Described temp controlled meter both-way communication control system is by total by RS485 for the temp controlled meter often organized in monochromatic drying control system
Line parallel is on Programmable Logic Controller, and temp controlled meter controls heater；
Described MOD pre-sets control system and is connected new air door respectively held by Programmable Logic Controller signal output part
Row device, time air door executer, exhaust door executor and air inlet fan, new air door executer controls new air door regulation resh air requirement, return air
Door executor controls return air door regulation air draft capacity of returns, and exhaust door executor controls exhaust door regulation exhaust air rate；
Described VOC detecting and controlling system connects VOC detector, VOC detector by Programmable Logic Controller signal output part
Connecting the VOC detection mouth one in total exhaust duct and often organize the VOC detection mouth two of monochromatic drying control system, VOC detects mouth one He
On VOC detection mouth two, correspondence is respectively equipped with sample cock one and sample cock two.
It is applicable to the electric control system control method of intaglio press drying system, it is characterised in that:
(1) control of exhaust duct control system of invariable pressure: the wind pressure value needed in total exhaust duct 5 can be inputted in touch screen,
And this value is transferred to Programmable Logic Controller, Programmable Logic Controller is collected always by the wind pressure transmitter of blast detection mouth simultaneously
Wind pressure value in exhaust duct, Programmable Logic Controller, by calculating, draws the frequency required for exhaust blower converter, and by this frequency
Value sends exhaust blower converter to, and converter drives exhaust blower with this frequency, thus forms closed-loop control system；PLC technology
Device can monitor blast size in wind pressure transmitter, the ruuning situation of exhaust blower converter, and total exhaust duct in real time, once occurs
Wind pressure transmitter fault, exhaust blower converter off-duty, exhaust blower frequency converter failure, in total exhaust duct, blast is the lowest or the highest,
Programmable Logic Controller can make alert process, and shows on the touchscreen；
(2) control of temp controlled meter both-way communication control system: the often monochromatic drying control system temp controlled meter actual temperature value of group
Reading in Programmable Logic Controller with set temperature value by RS485 bus, numerical value is sent to touch screen by Programmable Logic Controller,
Numerical value is made to show in touch screen；Meanwhile, the set temperature value in touch screen can be sent in Programmable Logic Controller, able to programme
Controller is sent in temp controlled meter by RS485 bus, it is achieved strange land operates；Touch screen is provided with formula for a product function, preserves
The set temperature value of every kind of product, when reproduction has preserved the product of data, only need to read the preservation of this product in touch screen
Parameter, touch screen will be delivered in Programmable Logic Controller by often organizing temp controlled meter set temperature value automatically, and Programmable Logic Controller passes through
Numerical value is sent to temp controlled meter by RS485 bus, it is ensured that set temperature value when set temperature value and original production is error free now；
Programmable Logic Controller detects RS485 communication state the most in real time, whether temp controlled meter thermocouple sensor breaks, and RS485 once occurs
Bus communication is abnormal, heating-up temperature overtemperature, and thermocouple sensor goes offline, and Programmable Logic Controller can make alert process, and
Show on touch screen；
(3) MOD pre-sets the control of control system: according to the size of intake, the biggest according to gear, new air door
Become big, the principle that return air door diminishes, regulate new air door executer and return air door executer, making the intake of every grade keep constant；
After the position of every grade of new air door executer and time air door executer is decided, regulate respective row air door executer, make this
Group baking oven is in micro-vacuum state；The positional information of every grade of 3 air doors is preserved in the programmable controller；Get over according to the space of a whole page
Greatly, the principle that gear is the biggest carries out gear selection in touch screen, and touch screen can send the gear of selection to PLC technology
Device, Programmable Logic Controller, according to selected gear, passes information to each group of 3 air door executers, and 3 air door executers drive phase
MOD is answered to go to the corresponding position preserved of this gear；When selection is automatically brought into operation, Programmable Logic Controller can detect according to VOC
This group VOC concentration that control system detects, VOC concentration value, less than this group VOC concentration set point in touch screen, reduces shelves
, VOC concentration value is higher than this group VOC concentration set point, increases gear, drives MOD to go to the corresponding preservation of this gear
Position；Current location is back to Programmable Logic Controller by each MOD, and Programmable Logic Controller can be by this current location and setting
Position compares, and after both do not wait and are more than certain time, Programmable Logic Controller can make alert process, and at touch screen
On show；
(4) control of VOC detecting and controlling system: Controlled by Programmable Controller opens sample cock the most successively
One or sample cock two, and ensure only one of which valve in an ON state, VOC detector can be drawn into by detection mouth
Connect the gas in valve corresponding part pipeline, gas is detected, and the VOC concentration data detected is sent to and can compile
Range controller, numerical value is sent to touch screen by Programmable Logic Controller, makes VOC concentration value show in touch screen；By detection mouth
The VOC concentration value that one detects is mainly used in alarm function, and when this value is more than warning numerical value, Programmable Logic Controller can make report
Alert process, and show on the touchscreen；By the VOC detection VOC concentration value that detects of mouth two except for work of reporting to the police
With outward, also will be for being automatically adjusted damper positions service；
As shown from the above technical solution, compared to existing technology, the invention has the beneficial effects as follows:
1, exhaust duct control system of invariable pressure ensures no matter regulate any air door, and the blast in total exhaust duct all remains constant,
Each colour cell blast is made to be prone to coupling.2, temp controlled meter both-way communication control system can make design temperature and the Current Temperatures of temp controlled meter
Show on the touchscreen, and design temperature can set in strange land on temp controlled meter with touch screen, increases the convenience of operation.With
Time by the formula function of touch screen, reach design temperature batch and preserve and read functions, it is ensured that change temperature during product category
Degree is configured without any error.3, MOD predetermined system can be pre-adjusted according to intake size and exhaust air rate size
A lot of shelves damper positions, carry out manually setting or entering according to each colour cell gas VOC concentration further according to each colour cell space of a whole page size
Row is automatically adjusted, and can effectively reduce exhaust air rate, reduces and adds thermal energy consumption, and reduces follow-up VOC emission improvement cost.4, VOC inspection
VOC concentration in observing and controlling system is used for detecting total exhaust duct and in each colour cell baking oven, for being automatically adjusted damper positions service, reduces
Discharge amount of exhaust gas, and solve, for follow-up thorough low cost, the condition that VOC emission problem provides good.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
1, touch screen；2, Programmable Logic Controller；3, exhaust blower converter；4, exhaust blower；5, total exhaust duct；6, blast detection
Mouthful；7, VOC detects mouth one；8, sample cock one；9, wind pressure transmitter；10, temp controlled meter；11, new air door executer；12, return air
Door executor；13, exhaust door executor；14, air inlet fan；15, heater；16, VOC detects mouth two；17, sample cock two；18、
VOC detector.
Detailed description of the invention
In order to make those skilled in the art can be further understood that inventive feature and technology contents, refer to following to have
Close detailed description of the invention and accompanying drawing.
Refer to shown in Fig. 1, it is adaptable to the electric control system of intaglio press drying system, including touch screen 1, can compile
Range controller 2, exhaust duct control system of invariable pressure, some groups of baking oven monochrome drying control systems and VOC detecting and controlling system, described
Often group baking oven monochrome drying control system is pre-seted control system by temp controlled meter both-way communication control system and MOD and forms.
Described touch screen 1 and Programmable Logic Controller 2 are in communication with each other by data wire connection.
Described exhaust duct control system of invariable pressure connects wind pressure transmitter by the blast detection mouth 6 being provided with in total exhaust duct 5
9, wind pressure transmitter 9 signal output part is connected to Programmable Logic Controller 2, and Programmable Logic Controller 2 connects the exhaust blower of total exhaust duct 5
Converter 3, transmits exhaust blower converter 3 by signal, and exhaust blower converter 3 connects exhaust blower 4 and regulates air quantity.
The temp controlled meter 10 often organized in monochromatic drying control system is passed through RS485 by described temp controlled meter both-way communication control system
Bus parallel connection is on Programmable Logic Controller 2, and temp controlled meter 10 controls heater 15.
Described MOD pre-sets control system and is connected new air door respectively held by Programmable Logic Controller 2 signal output part
Row device 11, time air door executer 12, exhaust door executor 13 and air inlet fan 14, it is new that new air door executer 11 controls the regulation of new air door
Air quantity, returns air door executer 12 and controls return air door regulation air draft capacity of returns, and exhaust door executor 13 controls exhaust door regulation air draft
Amount.
Described VOC detecting and controlling system connects VOC detector 18 by Programmable Logic Controller 2 signal output part, and VOC detects
Instrument 18 connects the VOC detection mouth 1 in total exhaust duct 5 and often organizes the VOC detection mouth 2 16 of monochromatic drying control system, and VOC examines
Survey correspondence on mouth one 7 and VOC detection mouth 2 16 and be respectively equipped with sample cock 1 and sample cock 2 17.
The present invention, mainly using touch screen 1 as centralized operation and display unit, with Programmable Logic Controller 2 as core, is carried out
Calculation process and logic control, make security of system stable operation.Owing to using Programmable Logic Controller 2 centralized Control, touch screen 1 is grasped
Making and display, real time operation data are very clear, and warning message is clear, and system running state, in real time control, can drop significantly
The maintenance of low system and maintenance difficulty, operation is very easy.
The control method of control system of the present invention, specific as follows:
(1) control of exhaust duct control system of invariable pressure: the wind pressure value needed in total exhaust duct 5 can be inputted in touch screen 1,
And this value is transferred to Programmable Logic Controller 2, Programmable Logic Controller 2 is gathered by the wind pressure transmitter 9 of blast detection mouth 6 simultaneously
Wind pressure value in total exhaust duct 5, Programmable Logic Controller 2, by calculating, draws the frequency required for exhaust blower converter 3, and
Sending this frequency values to exhaust blower converter 3, converter drives exhaust blower 4 with this frequency, thus forms closed-loop control system；
Programmable Logic Controller 2 can monitor wind pressure transmitter 9, the ruuning situation of exhaust blower converter 3, and total exhaust duct 5 endogenous wind in real time
, once there is wind pressure transmitter 9 fault, exhaust blower converter 3 off-duty, exhaust blower converter 3 fault, total exhaust duct in pressure size
In 5, blast is the lowest or the highest, and Programmable Logic Controller 2 can make alert process, and shows on touch screen 1；Exhaust duct
Control system of invariable pressure ensures no matter regulate any air door, and the blast in total exhaust duct 5 all remains constant, makes each colour cell blast be prone to
Coupling.
(2) control of temp controlled meter both-way communication control system: often monochromatic drying control system temp controlled meter 10 actual temperature of group
Value and set temperature value read in Programmable Logic Controller 2 by RS485 bus, and numerical value is sent to touch by Programmable Logic Controller 2
Touch screen 1, make numerical value show in touch screen 1；Meanwhile, the set temperature value in touch screen 1 can be sent to Programmable Logic Controller 2
In, Programmable Logic Controller 2 is sent in temp controlled meter 10 by RS485 bus, it is achieved strange land operates；Touch screen 1 is provided with product
Formula function, preserves the set temperature value of every kind of product, when reproduction has preserved the product of data, only need to read in touch screen 1
Taking the preservation parameter of this product, touch screen 1 will deliver to Programmable Logic Controller 2 by often organizing temp controlled meter 10 set temperature value automatically
In, numerical value is sent to temp controlled meter 10 by RS485 bus by Programmable Logic Controller 2, it is ensured that set temperature value and original raw now
Set temperature value during product is error free；Programmable Logic Controller 2 detection RS485 communication state, temp controlled meter 10 thermocouple the most in real time pass
Whether sensor breaks, and once occurs that RS485 bus communication is abnormal, and heating-up temperature overtemperature, thermocouple sensor goes offline, programmable control
Device 2 processed can make alert process, and shows on touch screen 1；Temp controlled meter both-way communication control system can make temperature control
The design temperature of table 10 and Current Temperatures show on touch screen 1, and design temperature can be on temp controlled meter 10 with touch screen 1
Strange land sets, and increases the convenience of operation；Simultaneously by the formula function of touch screen 1, reach design temperature batch and preserve and read
Take function, it is ensured that temperature when changing product category is configured without any error.
(3) MOD pre-sets the control of control system: according to the size of intake, the biggest according to gear, new air door
Become big, the principle that return air door diminishes, regulate new air door executer 11 and return air door executer 12, making the intake of every grade keep not
Become；After the position of every grade of new air door executer 11 and time air door executer 12 is decided, regulation respective row air door performs
Device 13, makes this group baking oven be in micro-vacuum state；The positional information of every grade of 3 air doors is saved in Programmable Logic Controller 2；Root
The biggest according to the space of a whole page, the principle that gear is the biggest carries out gear selection in touch screen 1, and the gear of selection can be sent to by touch screen 1
Programmable Logic Controller 2, Programmable Logic Controller 2, according to selected gear, passes information to each group of 3 air door executers, 3 air doors
The corresponding MOD of actuator driven goes to the corresponding position preserved of this gear；When selection is automatically brought into operation, Programmable Logic Controller 2
This group VOC concentration that can detect according to VOC detecting and controlling system, VOC concentration value is less than this group VOC concentration in touch screen
Setting value, reduces gear, and VOC concentration value is higher than this group VOC concentration set point, increases gear, drives MOD to go to this shelves
The corresponding position preserved, position；Current location is back to Programmable Logic Controller 2 by each MOD, and Programmable Logic Controller 2 can be by
This current location compares with setting position, and after both do not wait and are more than certain time, Programmable Logic Controller 2 can make warning
Process, and show on touch screen 1；MOD predetermined system can according to intake size and exhaust air rate size,
It is pre-adjusted a lot of shelves damper positions, carries out manually setting or dense according to each colour cell gas VOC further according to each colour cell space of a whole page size
Degree size automatically adjusts, and can effectively reduce exhaust air rate, reduces and adds thermal energy consumption, and reduces follow-up VOC emission improvement cost.
(4) VOC detection controls the control of system: Programmable Logic Controller control 2 is made and opened sample cock the most successively
One 8 or sample cock 2 17, and ensure only one of which valve in an ON state, VOC detector 18 is permissible by detection mouth
It is drawn into the gas connected in valve corresponding part pipeline, gas is detected, and the VOC concentration data transmission that will detect
To Programmable Logic Controller 2, numerical value is sent to touch screen 1 by Programmable Logic Controller 2, makes VOC concentration value show in touch screen 1；
The VOC concentration value detected by detection mouth 1 is mainly used in alarm function, when this value is more than warning numerical value, and programmable control
Device 2 processed can make alert process, and shows on touch screen 1；The VOC concentration detected by VOC detection mouth 2 16
Value, also will be for being automatically adjusted damper positions service in addition to for alarm function；VOC detection controls system and is used for detecting total exhaust duct
VOC concentration in 5 and in each colour cell baking oven, for being automatically adjusted damper positions service, low cost, simply intelligence.
But the foregoing is only the preferable possible embodiments of the present invention, and be not used to limit to the scope of the claims of the present invention, therefore
The equivalent structure change that all utilization description of the invention and accompanying drawing content are made, the most within the scope of the present invention.
Claims (2)
1. it is applicable to the electric control system of intaglio press drying system, including touch screen, Programmable Logic Controller, exhaust duct perseverance
Pressure control system, some groups of baking oven monochrome drying control systems and VOC detecting and controlling system, described often group baking oven monochrome dries control
System processed is pre-seted control system by temp controlled meter both-way communication control system and MOD and forms, it is characterised in that:
Described touch screen and Programmable Logic Controller are in communication with each other by data wire connection；
Described exhaust duct control system of invariable pressure is by the blast detection mouth connection wind pressure transmitter being provided with in total exhaust duct, and blast becomes
Sending device signal output part to be connected to Programmable Logic Controller, Programmable Logic Controller connects the exhaust blower converter of total exhaust duct, will letter
Number transmission exhaust blower converter, exhaust blower converter connects exhaust blower regulation air quantity；
The temp controlled meter often organized in monochromatic drying control system is passed through RS485 bus also by described temp controlled meter both-way communication control system
Being linked on Programmable Logic Controller, temp controlled meter controls heater；
Described MOD pre-set control system by Programmable Logic Controller signal output part connect respectively new air door executer,
Returning air door executer, exhaust door executor and air inlet fan, new air door executer controls new air door regulation resh air requirement, and return air door performs
Device controls return air door regulation air draft capacity of returns, and exhaust door executor controls exhaust door regulation exhaust air rate；
Described VOC detecting and controlling system connects VOC detector by Programmable Logic Controller signal output part, and VOC detector connects
VOC in total exhaust duct detects mouth one and often organizes the VOC detection mouth two of monochromatic drying control system, and VOC detection mouth one and VOC is examined
Survey correspondence on mouth two and be respectively equipped with sample cock one and sample cock two.
The electric control system control method being applicable to intaglio press drying system the most according to claim 1, it is special
Levy and be:
(1) control of exhaust duct control system of invariable pressure: the wind pressure value needed in total exhaust duct 5 can be inputted in touch screen, and will
This value is transferred to Programmable Logic Controller, and Programmable Logic Controller collects total air draft by the wind pressure transmitter of blast detection mouth simultaneously
Wind pressure value in pipe, Programmable Logic Controller, by calculating, draws the frequency required for exhaust blower converter, and is passed by this frequency values
Giving exhaust blower converter, converter drives exhaust blower with this frequency, thus forms closed-loop control system；Programmable Logic Controller meeting
Monitor blast size in wind pressure transmitter, the ruuning situation of exhaust blower converter, and total exhaust duct in real time, blast once occurs
Transmitter fault, exhaust blower converter off-duty, exhaust blower frequency converter failure, in total exhaust duct, blast is the lowest or the highest, can compile
Range controller can make alert process, and shows on the touchscreen；
(2) control of temp controlled meter both-way communication control system: often organize monochromatic drying control system temp controlled meter actual temperature value and set
Constant temperature angle value reads in Programmable Logic Controller by RS485 bus, and numerical value is sent to touch screen by Programmable Logic Controller, makes number
Value display is in touch screen；Meanwhile, the set temperature value in touch screen can be sent in Programmable Logic Controller, PLC technology
Device is sent in temp controlled meter by RS485 bus, it is achieved strange land operates；Touch screen is provided with formula for a product function, preserves every kind
The set temperature value of product, when reproduction has preserved the product of data, only need to read the preservation parameter of this product in touch screen,
Touch screen will be delivered in Programmable Logic Controller by often organizing temp controlled meter set temperature value automatically, and Programmable Logic Controller passes through RS485
Numerical value is sent to temp controlled meter by bus, it is ensured that set temperature value when set temperature value and original production is error free now；Can compile
Range controller detects RS485 communication state the most in real time, whether temp controlled meter thermocouple sensor breaks, and RS485 bus once occurs
Communication abnormality, heating-up temperature overtemperature, thermocouple sensor goes offline, and Programmable Logic Controller can make alert process, and is touching
Screen display is out；
(3) MOD pre-sets the control of control system: according to the size of intake, the biggest according to gear, and new air door becomes big,
The principle that return air door diminishes, regulates new air door executer and returns air door executer, makes the intake of every grade keep constant；At every grade
After the position of new air door executer and time air door executer is decided, regulate respective row air door executer, make this group baking oven
It is in micro-vacuum state；The positional information of every grade of 3 air doors is preserved in the programmable controller；The biggest according to the space of a whole page, gear
The biggest principle carries out gear selection in touch screen, and touch screen can send the gear of selection to Programmable Logic Controller, can compile
Range controller, according to selected gear, passes information to each group of 3 air door executers, and 3 air door executers drive the most electronic
Air door goes to the corresponding position preserved of this gear；When selection is automatically brought into operation, Programmable Logic Controller can control system according to VOC detection
This group VOC concentration that system detects, VOC concentration value, less than this group VOC concentration set point in touch screen, reduces gear, VOC
Concentration value is higher than this group VOC concentration set point, increases gear, drives MOD to go to the corresponding position preserved of this gear；
Current location is back to Programmable Logic Controller by each MOD, and this current location can be done by Programmable Logic Controller with setting position
Relatively, after both do not wait and are more than certain time, Programmable Logic Controller can make alert process, and shows on the touchscreen
Out；
(4) control of VOC detecting and controlling system: Controlled by Programmable Controller open the most successively sample cock one or
Sample cock two, and ensure only one of which valve in an ON state, VOC detector can be drawn into connection by detection mouth
Gas in valve corresponding part pipeline, detects gas, and sends the VOC concentration data detected to programmable control
Device processed, numerical value is sent to touch screen by Programmable Logic Controller, makes VOC concentration value show in touch screen；Examined by detection mouth one
The VOC concentration value measured is mainly used in alarm function, and when this value is more than warning numerical value, Programmable Logic Controller can be made at warning
Reason, and show on the touchscreen；By the VOC detection VOC concentration value that detects of mouth two in addition to for alarm function,
Also will be for being automatically adjusted damper positions service.
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| CN107364230A (en) * | 2017-08-11 | 2017-11-21 | 广州黑马科技有限公司 | A kind of printing machine air circulation system |
| CN107498991A (en) * | 2017-08-28 | 2017-12-22 | 西安昱杰机电设备有限公司 | A kind of printing machine central heating device |
| CN107498993A (en) * | 2017-03-14 | 2017-12-22 | 广州黑马科技有限公司 | A kind of intaglio press air circulation system |
| CN107728504A (en) * | 2017-08-17 | 2018-02-23 | 西安理工大学 | Intaglio printing electronics drying system controller based on ARM |
| CN109094178A (en) * | 2018-08-27 | 2018-12-28 | 青岛成盛林环保设备有限公司 | A kind of intaglio press checking enrichment exhaust system |
| CN110834473A (en) * | 2019-11-29 | 2020-02-25 | 晋江市华联印铁制罐有限公司 | Automatic production control method for tin printing can |
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| CN109094178A (en) * | 2018-08-27 | 2018-12-28 | 青岛成盛林环保设备有限公司 | A kind of intaglio press checking enrichment exhaust system |
| CN110834473A (en) * | 2019-11-29 | 2020-02-25 | 晋江市华联印铁制罐有限公司 | Automatic production control method for tin printing can |
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