CN104960336A - Temperature and air-volume constant value numerical control energy-saving drying device for thin-film printing - Google Patents
Temperature and air-volume constant value numerical control energy-saving drying device for thin-film printing Download PDFInfo
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- CN104960336A CN104960336A CN201510350072.3A CN201510350072A CN104960336A CN 104960336 A CN104960336 A CN 104960336A CN 201510350072 A CN201510350072 A CN 201510350072A CN 104960336 A CN104960336 A CN 104960336A
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Abstract
The invention discloses a temperature and air-volume constant value numerical control energy-saving drying device for thin-film printing. The temperature and air-volume constant value numerical control energy-saving drying device for thin-film printing mainly solves the problems that an existing drying device is high in energy consumption, high in drying cost and low in degree of automation. The temperature and air-volume constant value numerical control energy-saving drying device for thin-film printing is characterized in that a draught fan, a second-stage evaporator (5), a condenser (2) and an electric heater are connected into an air inlet channel (6), a first-stage evaporator (4) is connected to an air outlet channel (7) in the shell, an outlet of a compressor (1) is connected with the condenser (2), the first-stage evaporator (4) and the second-stage evaporator (5) in series, an outlet of the second-stage evaporator (5) is communicated with an outlet of the compressor (1), a heat supply temperature detection device and a heat supply air-volume detection device connected with a controller are arranged on the air inlet channel (6), and an air outlet temperature detection device connected with the controller is arranged on an air outlet (8). The temperature and air-volume constant value numerical control energy-saving drying device for thin-film printing has the advantages of being low in energy consumption, low in drying cost and high in degree of automation.
Description
Technical field
The present invention relates to a kind of drying equipment, especially film printing temperature air quantity definite value numerical control and energy saving drying device.
Background technology
In film printing field, need to use drying device flash baking after film printing ink, the hot blow that electric heater produces is entered the ink on drying in oven film surface by drying device employing blower fan.And existing drying device is high because reasons in structure exists energy consumption, drying cost is high, the problem that automaticity is low, affects film printing processing cost.
Summary of the invention
High in order to solve existing drying device energy consumption, drying cost is high, the problem that automaticity is low.The invention provides a kind of film printing temperature air quantity definite value numerical control and energy saving drying device.It is low that this film printing temperature air quantity definite value numerical control and energy saving drying device has energy consumption, and drying cost is low, the feature that automaticity is high.
Technical scheme of the present invention is: this film printing temperature air quantity definite value numerical control and energy saving drying device comprises compressor, condenser, expansion valve, first evaporator and second level evaporimeter.Air-inlet cavity and air-out chamber is separated with in housing, film press baking oven is connected with Pressure difference feedback checkout gear, air-inlet cavity there is air intake passage, there is air-out passage in chamber in air-out, air intake passage is connected with outlet with the import of air-out chamber with film press baking oven, there are air door and air-introduced machine in air-out passage, in air intake passage, are connected with shutter, blower fan, second level evaporimeter, condenser, electric heater, first evaporator is connected in air-out chamber, and compressor is fixed in housing, and compressor outlet is through going out stop valve, condenser, expansion valve, first evaporator, second level evaporimeter, enter stop valve to be connected with compressor inlet, go out on the pipeline under stop valve and be in parallel by pipeline and high-pressure solenoid valve and fluid reservoir, high-voltage switch gear is parallel with between high-pressure solenoid valve and the pipeline under going out stop valve, enter on the pipeline under stop valve and be in parallel by pipeline and low-voltage solenoid valve and fluid reservoir, low tension switch is parallel with between low-voltage solenoid valve and the pipeline under entering stop valve, the import junction of air intake passage and film press baking oven is provided with heat supply temperature checkout gear and hot wind supply amount detecting device, air-out passage is provided with exhaust outlet temperature-detecting device, Pressure difference feedback checkout gear, heat supply temperature checkout gear, hot wind supply amount detecting device is connected with controller with exhaust outlet temperature-detecting device and electric heater, controller is connected with electric electric heater power regulating eqiupment, fan frequency converter, enter air draft adjuster, compressor switch, high-low pressure electromagnetic valve switch, electricity electric heater temperature limit switch, air-introduced machine switch, temperature acquisition transmitter, air quantity gathers transmitter, enter air draft pressure differential detection transmitter, electric heater temperature limit switch is connected with electric heater, and fan frequency converter is connected with the blower fan in air intake passage, air intake air draft damper regulator respectively with the inlet air door in air intake passage, air draft air door in air-out passage is connected, and compressor switch is connected with compressor, high-low pressure electromagnetic valve switch respectively with high-pressure solenoid valve, low-voltage solenoid valve is connected, and air-introduced machine switch is connected with air-introduced machine, temperature acquisition transmitter respectively with the temperature-detecting device in heat donor passage, temperature-detecting device in air exhaust passage is connected, and air quantity gathers transmitter and is connected with the Wind volume detector in heat donor passage, enters air draft pressure differential detection transmitter and is connected with Pressure difference feedback checkout gear.
The present invention has following beneficial effect: this film printing temperature air quantity definite value numerical control and energy saving drying device is separated with air-inlet cavity and air-out chamber owing to adopting in housing, film press baking oven is connected with Pressure difference feedback checkout gear, air-inlet cavity there is air intake passage, there is air-out passage in chamber in air-out, air intake passage is connected with outlet with the import of air-out chamber with film press baking oven, there are air door and air-introduced machine in air-out passage, shutter is connected with in air intake passage, blower fan, second level evaporimeter, condenser, electric heater, first evaporator is connected in air-out chamber, compressor is fixed in housing, compressor outlet is through going out stop valve, condenser, expansion valve, first evaporator, second level evaporimeter, enter stop valve to be connected with compressor inlet, go out on the pipeline under stop valve and be in parallel by pipeline and high-pressure solenoid valve and fluid reservoir, high-voltage switch gear is parallel with between high-pressure solenoid valve and the pipeline under going out stop valve, enter on the pipeline under stop valve and be in parallel by pipeline and low-voltage solenoid valve and fluid reservoir, low tension switch is parallel with between low-voltage solenoid valve and the pipeline under entering stop valve, the import junction of air intake passage and film press baking oven is provided with heat supply temperature checkout gear and hot wind supply amount detecting device, air-out passage is provided with exhaust outlet temperature-detecting device, Pressure difference feedback checkout gear, heat supply temperature checkout gear, hot wind supply amount detecting device is connected with controller with exhaust outlet temperature-detecting device and electric heater, controller is connected with electric heater power regulating eqiupment, fan frequency converter, enter air draft adjuster, compressor switch, high-low pressure electromagnetic valve switch, electricity electric heater temperature limit switch, air-introduced machine switch, temperature acquisition transmitter, air quantity gathers transmitter, enter air draft pressure differential detection transmitter, electric heater temperature limit switch is connected with electric heater, fan frequency converter is connected with the blower fan in air intake passage, air intake air draft damper regulator respectively with the inlet air door in air intake passage, air draft air door in air-out passage is connected, compressor switch is connected with compressor, high-low pressure electromagnetic valve switch respectively with high-pressure solenoid valve, low-voltage solenoid valve is connected, air-introduced machine switch is connected with air-introduced machine, temperature acquisition transmitter respectively with the temperature-detecting device in heat donor passage, temperature-detecting device in air exhaust passage is connected, air quantity gathers transmitter and is connected with the Wind volume detector in heat donor passage, that enters that air draft pressure differential detection transmitter is connected with Pressure difference feedback checkout gear optimizes structure.On the inverse Carnot's principle basis of utilization, in order to increase the temperature range of waste heat recovery and improve waste gas residual heat organic efficiency, and adopt double effect evaporator series design.Electric heater is used for device power-up and preheats and heat energy loss compensation heating in running, then the waste gas residual heat utilizing first evaporator, second level evaporimeter, compressor, condenser, expansion valve to form reclaims heat exchange temperature-increasing system, as the main supplying heat source of press oven.By device component devices air intake/outtake systems such as inlet air door, blower fan, air draft air door, air-introduced machines, with heating system for providing the constant hot blast of preset temperature and air quantity in press oven, being used for rapid draing is printed on the ink of film surface.Under the effect of air-introduced machine, the opening angle of suitable adjustment inlet air door and air draft air door and Feng Ji Give air force, can make to produce definite value negative pressure in baking oven, guarantee that the volatilization waste gas by the drying of printed matter curing ink produces is discharged, the film printing avoiding dry-heat air to pass through in baking oven conducts gap, be blown in machine room the ink volatilization gas proportion increased the weight of in workshop air, the film printing simultaneously also avoiding dry-heat air to pass through in baking oven conducts gap, blow to printing machine disc, cause ink peeling, affect printing quality.Utilize the heat pump of inverse Carnot's principle, first evaporator absorbs heat, is utilized by the waste heat secondary in passage combustion gas, hot blast secondary is discharged in the outlet of film press baking oven utilize, and then reduction energy consumption, be reduced to about 4 kilowatts by existing about 30 kilowatts, reduce drying cost.Meanwhile, utilize controller control temperature and air quantity, make temperature and air quantity constant, thus improve automaticity.The Main Function of the second level evaporimeter of this device series connection is reduce with outdoor air intake the temperature entering medium in compressor on the one hand, improves recuperation of heat temperature range; Effect is the heat energy that fully release is reclaimed on the other hand, and reduce the humidity in outdoor air intake, hydrofuge profit is dry.To have energy consumption low for this film printing temperature air quantity definite value numerical control and energy saving drying device thus, and drying cost is low, the feature that automaticity is high.。
accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present invention.
1-compressor in figure, 2-condenser, 3-expansion valve, 4-first evaporator, 5-second level evaporimeter, 6-air intake passage, 7-air-out passage, 8-Pressure difference feedback checkout gear, 9-low-voltage solenoid valve, 10-fluid reservoir, 11-low tension switch, 12-high-pressure solenoid valve, 13-high-voltage switch gear.
detailed description of the invention:
Below in conjunction with accompanying drawing, the invention will be further described:
Shown in accompanying drawing, this film printing temperature air quantity definite value numerical control and energy saving drying device comprises compressor 1, condenser 2, expansion valve 3, first evaporator 4 and second level evaporimeter 5.Air-inlet cavity and air-out chamber is separated with in housing, film press baking oven is connected with Pressure difference feedback checkout gear 8, air-inlet cavity there is air intake passage 6, air-out chamber there is air-out passage 7, air intake passage 6 is connected with outlet with the import of air-out chamber with film press baking oven, there are air door and air-introduced machine in air-out passage 7, air circulation system is formed by air-inlet cavity and air-out chamber, the blower fan of fresh air in air intake passage 6, condenser 2, electrical auxiliary heater heating enters baking oven, take away the solvent flashing of film surface ink in an oven, first evaporator 4 again in air-out chamber is lowered the temperature, waste gas is discharged from exhaust outlet by the air draft air door in air-out passage 7 and air-introduced machine by the ambient temperature exhaust gas become with solvent flashing.
Shutter is connected with in air intake passage 6, blower fan, second level evaporimeter 5, condenser 2, electric heater, first evaporator 4 is connected to the film press baking oven exit in air-out chamber, and electric heater rises auxiliary or compensates heat effect, and compressor 1 is fixed in housing, and compressor 1 exports through going out stop valve, condenser 2, expansion valve 3, first evaporator 4, second level evaporimeter 5, enter stop valve to be connected with compressor 1 import, go out on the pipeline under stop valve and be in parallel with fluid reservoir 10 by pipeline and high-pressure solenoid valve 12, high-voltage switch gear 13 is parallel with between high-pressure solenoid valve 12 and the pipeline under going out stop valve, enter on the pipeline under stop valve and be in parallel with fluid reservoir 10 by pipeline and low-voltage solenoid valve 9, low tension switch 11 is parallel with, by compressor 1 between low-voltage solenoid valve 9 and the pipeline under entering stop valve, go out stop valve, condenser 2, expansion valve 3, first evaporator 4, second level evaporimeter 5, enter stop valve, low-voltage solenoid valve 9, low tension switch 11, high-pressure solenoid valve 12, high-voltage switch gear 13 forms coolant circulating system and protection system.Utilize inverse Kano operation principle, adopt double effect evaporator particular design, by controller automatic control system, regulate electric heater and compressor 1 start and stop automatically.During compressor operating, condenser 2 is injected after refrigerant supercharging in compressor 1 being heated up, gaseous state high temperature refrigerant in condenser 2 is by the air-flow heating in air-inlet cavity, release heat cooling condensation simultaneously, first evaporator 4 is entered after expansion valve 3 reducing pressure by regulating flow, in first evaporator 4, refrigerant absorbs with the heat delivery in the high-temp waste gas of solvent flashing in second level evaporimeter 5, second level evaporimeter 5 is arranged on the air-inlet cavity front end between blower fan and condenser 2, the effect of second level evaporimeter 5 is that the part of waste heat discharged higher than EAT dehumidifies to air intake on the one hand, effect is on the other hand the temperature range effectively reducing the temperature flowing to compressor 1 refrigerant, the degree of heat reducing compressor 1, increase waste heat recovery, and more than second level evaporimeter 5 exports by compressor 1, warm refrigerant sucks, and goes round and begins again, closed circulation.Will printing drying machine 1 time exhaust 67 DEG C of energy recovery of discharging, be used for the new air intake of heating drier, reach maximum energy-saving effect.This energy-conservation link is compared with traditional printing drying machine, and amount of energy saving can reach more than 80%.Form hydraulic protecting branch road by low-voltage solenoid valve 9, low tension switch 11, high-pressure solenoid valve 12, high-voltage switch gear 13, protection coolant circulating system normally runs.Air intake passage 6 is provided with heat supply temperature checkout gear and hot wind supply amount detecting device with the import junction of film press baking oven, air-out passage 7 is provided with exhaust outlet temperature-detecting device, Pressure difference feedback checkout gear 8, heat supply temperature checkout gear, hot wind supply amount detecting device are connected with controller with exhaust outlet temperature-detecting device and electric heater.
Controller is connected with electric heater power regulating eqiupment, fan frequency converter, enters air draft adjuster, compressor switch, high-low pressure electromagnetic valve switch, electric heater temperature limit switch, air-introduced machine switch, temperature acquisition transmitter, air quantity gather transmitter, enter air draft pressure differential detection transmitter.Controlled by controller digital intelligent.Electric heater power regulating eqiupment and electric heater temperature limit switch are connected with electric heater; Fan frequency converter is connected with the blower fan in air intake passage; Enter air draft damper regulator to be connected with the inlet air door in air intake passage, air draft air door in air exhaust passage respectively; Compressor switch is connected with compressor 1; High-low pressure electromagnetic valve switch is connected with high-pressure solenoid valve 12, low-voltage solenoid valve 9 respectively; Air-introduced machine switch is connected with air-introduced machine; Temperature acquisition transmitter is connected with the temperature-detecting device in heat donor passage, the temperature-detecting device in air exhaust passage respectively; Air quantity gathers transmitter and is connected with the Wind volume detector in heat donor passage; Enter air draft pressure differential detection transmitter to be connected with Pressure difference feedback checkout gear 8.Utilize heat supply temperature checkout gear, hot wind supply amount detecting device, exhaust outlet temperature-detecting device and differential pressure pickup, Real-time Collection and automatically control intake air temperature, delivery temperature, oven temperature, intake volume, baking oven negative pressure numerical value.Condenser 2 in this film printing temperature air quantity definite value numerical control and energy saving drying device there is no substantial differences with the device of evaporimeter itself, be used in and be just referred to as evaporimeter before expansion valve 3, comprise first evaporator 4 and second level evaporimeter 5, be used in expansion valve 3 below be just called condenser 2, this film printing second level evaporimeter 5 arranged special in temperature air quantity definite value numerical control and energy saving drying device, mainly release heat is in order to hydrofuge, instead of is used for absorbing heat.
The effect of expansion valve 3: expansion valve 3 makes the liquid refrigerant in pipeline become the moist steam of low-temp low-pressure by its throttling, then cold-producing medium absorbs the heat energy of waste heat in combustion gas and reaches waste heat recovering energy conserving effect in first evaporator 4.
High-voltage switch gear 13, low tension switch 11, high-pressure solenoid valve 12, low-voltage solenoid valve 9 and fluid reservoir 10 act on: high-voltage switch gear 13, low tension switch 11, high-pressure solenoid valve 12, low-voltage solenoid valve 9 prevent the too high and protection element that install too low with pressure of inspiration(Pi) of compressor 1 pressure at expulsion in heat pump.When compressor 1 pressure at expulsion exceedes setting value, high-voltage switch gear is protected, and high-pressure solenoid valve 12 is opened, and is entered in fluid reservoir 10 by the refrigerant in system.When compressor 1 pressure of inspiration(Pi) is too low, time particularly lower than atmospheric pressure, the fuel delivery of grease pump can be affected, affect the service life of compressor 1, at this moment low tension switch 11 action, is opened by low-voltage solenoid valve 9, by fluid reservoir 10 to coolant adding in system, guarantee the stable of low pressure.Going out stop valve with entering stop valve is normally open when equipment works, and only the manual-lock when changing compressor, prevents refrigerating fluid from leaking.
The effect of Pressure difference feedback checkout gear 8: the air pressure measuring oven interior and baking oven outside with difference gauge, this pressure reduction signal of telecommunication is fed back to controller, by controller by the numerical value pre-entering setting, the opening angle of corresponding automatic adjustment air draft air door, inlet air door and Feng Ji Give air force, guarantee to produce steady state value negative pressure in baking oven.
During actual use:
First, fresh air is sucked by blower fan by airstrainer by this film printing temperature air quantity definite value numerical control and energy saving drying device, then give heater, first evaporator 4 and second level evaporimeter 5 to heat, high-temperature hot-air after heating is sent into press oven drying is carried out to the ink being printed on film surface, the organic solvent that film surface ink in press oven volatilizees is taken away formation waste gas by high temperature air, thus completes dry run.Waste gas with organic solvent absorbs heat energy through over-heat-exchanger first evaporator 4, heat in waste gas is reclaimed instantaneously, become low temperature waste gas, form final air draft, the heat reclaimed instantaneously from waste gas is air intake hydrofuge by second level evaporimeter 5 release portion heat by first evaporator 4, then pass compressor 1 compression back by cooling medium to heat, then the cooling medium of high temperature is delivered in condenser 2 and heat to air intake.
This film printing temperature air quantity definite value numerical control and energy saving drying device is constant temperature, a permanent wind amount waste heat recovering energy conserving system providing efficient stable.Main utilization carries out work against Carnot cycle principle and SCM Based digital intelligent control principle, and heat exchange form adopts reverse exchanging form, and make the waste gas residual heat rate of recovery maximum, energy consumption is minimum.The design of temperature air quantity definite value numerical control and energy saving drying device from electricity saving and energy saving angle of this film printing, utilize inverse Kano operation principle, to recycling after waste heat recovery, this effective driers is applied in the ink setting link of film printing product, compressor 1 is collaborative dry with heater, when baking oven heat supply temperature is set to 70 DEG C, start stable operation post-heater almost quits work, the heat reclaimed by first evaporator is only relied on to run temperature raising through compressor work, just substantially can maintain normal dry work, energy-saving effect clearly.
The printing drying equipment of this film printing temperature air quantity definite value numerical control and energy saving drying device and existing electrical heating and other heat source contrasts, because this plant automation controlling extent is high, and by the waste heat recovery recycling in waste gas, system power consumption is less, be only 15% one 20% of current common electrical heating type drying equipment, can significantly electricity saving and energy saving, therefore significantly can reduce the print production cost of film printing product.Also because using electrical heating type clean energy resource, the hazard brought without the need to worry such as coal furnace steam heated formula, combustion gas or oil-furnace heating formula thermal source and atmosphere pollution, and at this film printing with in temperature air quantity definite value numerical control and energy saving drying device, because it is without the need to using other heating equipment facilities as boiler room etc., thus its device can be installed in the casing in very little space.
This film printing temperature air quantity definite value numerical control and energy saving drying device is applicable to coating machine, compounding machine, the ink setting of the film printing product such as the PE such as printing machine, OPP, is also applicable to paper, tobacco, grain, the fields such as fruit and vegetable dryness simultaneously.
Claims (1)
1. a film printing temperature air quantity definite value numerical control and energy saving drying device, comprise compressor (1), condenser (2), expansion valve (3), first evaporator (4) and second level evaporimeter (5), it is characterized in that: in housing, be separated with air-inlet cavity and air-out chamber, film press baking oven is connected with Pressure difference feedback checkout gear (8), air intake passage (6) is had in air-inlet cavity, air-out chamber there is air-out passage (7), air intake passage (6) is connected with outlet with the import of air-out chamber with film press baking oven, air-out passage has air door and air-introduced machine in (7), air intake passage is connected with shutter in (6), blower fan, second level evaporimeter (5), condenser (2), electric heater, first evaporator (4) is connected in air-out chamber, compressor (1) is fixed in housing, compressor (1) outlet is through going out stop valve, condenser (2), expansion valve (3), first evaporator (4), second level evaporimeter (5), enter stop valve to be connected with compressor (1) import, go out on the pipeline under stop valve and be in parallel with fluid reservoir (10) by pipeline and high-pressure solenoid valve (12), high-voltage switch gear (13) is parallel with between high-pressure solenoid valve (12) and the pipeline under going out stop valve, enter on the pipeline under stop valve and be in parallel with fluid reservoir (10) by pipeline and low-voltage solenoid valve (9), low tension switch (11) is parallel with between low-voltage solenoid valve (9) and the pipeline under entering stop valve, air intake passage (6) is provided with heat supply temperature checkout gear and hot wind supply amount detecting device with the import junction of film press baking oven, (7) are provided with exhaust outlet temperature-detecting device to air-out passage, Pressure difference feedback checkout gear (8), heat supply temperature checkout gear, hot wind supply amount detecting device, exhaust outlet temperature-detecting device and electric heater are connected with controller, controller is connected with electric heater power regulating eqiupment, fan frequency converter, enter air draft adjuster, compressor switch, high-low pressure electromagnetic valve switch, electric heater temperature limit switch, air-introduced machine switch, temperature acquisition transmitter, air quantity gathers transmitter, enter air draft pressure differential detection transmitter, electric heater temperature limit switch is connected with electric heater, fan frequency converter is connected with the blower fan in air intake passage, air intake air draft damper regulator respectively with the inlet air door in air intake passage, air draft air door in air-out passage (7) is connected, compressor switch is connected with compressor (1), high-low pressure electromagnetic valve switch respectively with high-pressure solenoid valve (12), low-voltage solenoid valve (9) is connected, air-introduced machine switch is connected with air-introduced machine, temperature acquisition transmitter respectively with the temperature-detecting device in heat donor passage, temperature-detecting device in air exhaust passage is connected, air quantity gathers transmitter and is connected with the Wind volume detector in heat donor passage, enter air draft pressure differential detection transmitter to be connected with Pressure difference feedback checkout gear (8).
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| CN201510350072.3A CN104960336B (en) | 2015-06-24 | 2015-06-24 | Film printing temperature air quantity definite value numerical control and energy saving drying device |
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| CN201510350072.3A CN104960336B (en) | 2015-06-24 | 2015-06-24 | Film printing temperature air quantity definite value numerical control and energy saving drying device |
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Cited By (6)
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| CN106827801A (en) * | 2017-04-05 | 2017-06-13 | 江阴市汇通印刷包装机械有限公司 | The energy recovery air supply device and its circulation air feed system of printing machine |
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| CN110171187A (en) * | 2019-06-22 | 2019-08-27 | 黎庆德 | A kind of plastic-film printer |
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| CN112706532A (en) * | 2020-12-29 | 2021-04-27 | 东莞市正新包装制品有限公司 | Water-based ink printing method of shrink film and shrink film |
| CN113613911A (en) * | 2019-07-29 | 2021-11-05 | 惠普发展公司，有限责任合伙企业 | Pressure in printing apparatus |
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| CN113613911A (en) * | 2019-07-29 | 2021-11-05 | 惠普发展公司，有限责任合伙企业 | Pressure in printing apparatus |
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| CN112706532A (en) * | 2020-12-29 | 2021-04-27 | 东莞市正新包装制品有限公司 | Water-based ink printing method of shrink film and shrink film |
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