CN2260293Y

CN2260293Y - Machine for quickly drying tobacco

Info

Publication number: CN2260293Y
Application number: CN 96231461
Authority: CN
Inventors: 程方
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-19
Filing date: 1996-03-19
Publication date: 1997-08-20
Anticipated expiration: 2006-03-19

Abstract

The utility model discloses a machine for quickly drying tobacco, relating to a non-conducting medium drying apparatus. The machine for quickly drying tobacco is characterized in that working capacitance polar plates which produce electromagnetic field are arranged up and down in parallel, the positive polar plate is arranged downward, and the negative polar plate is arranged upward; the negative polar plate is electrically connected with a shielding outer cover of the whole machine for quickly drying tobacco and then is grounded; an air inlet, an air outlet, a feeding port and a discharge port all use a copper wire net cover to ground for shielding; in addition, the utility model send outputted high frequency electromagnetic wave energy and the humiture condition of processed goods into a single chip computer as feedback signals, and the single chip computer automatically controls each working parameter with real time according to a prearranged program. The utility model has the advantages of quick drying speed, low energy consumption without pollution, and convenient operation, and has no special requirements for operating environment; the radiation protection requirements of the utility model comes up to the standards.

Description

The tobacco rapid dryer

The utility model is to utilize medium heating principle, to all kinds of non-conductive mediums, particularly carries out quick-drying a kind of equipment at tobacco, cigarette.

The drying of tobacco, cigarette is normally finished by methods such as Exposure to Sunlight or Electric heat oven bakings, but when tobacco, cigarette process said method drying, often need a large amount of time and labour or the energy, and dry mass is uncontrollable, sometimes even can occur that fragrant proportioning changes, more serious quality problems such as contaminated.

At present, have in the world and utilize microwave that tobacco is carried out dry experimental applications, but owing to be subjected to the fixing restriction of its resonant frequency point, kind, the humidity difference that can not make it with tobacco (volume) are adjusted its running parameter, thereby tobacco phenomenon on fire in dry run took place.Now another kind of more feasible method then is to use electron tube high-frequency dielectric mode of heating, but it has the operation sequence complexity, adjusts the phenomenon of running parameter with operating personnel's experience.Another significant deficiency of this mode of heating is to be difficult to solve complete machine high frequency radiation problem, so the use place and the service condition of equipment had very big restriction.

The purpose of this utility model is to provide a kind of tobacco quick drying apparatus of energy automation control.This equipment can be adjusted running parameter and handle to carry out rapid draing automatically at the tobacco (volume) of various different cultivars and humidity.And in use, the complete machine electromagenetic wave radiation can be shielded effectively.

The purpose of this utility model is achieved through the following technical solutions: it is made up of electric main frame and mechanical subsidiary engine two large divisions:

(1) electric main frame is made of pressure-controlled high-frequency high-power signal generating circuit, automatic control circuit, large-scale polar-plate-type electric capacity, current and voltage signals Acquisition Circuit, temperature humidity detector, display circuit and power supply etc.Automatic control circuit is made of single-chip microcomputer and the input/output interface circuit that adapts with it again, the sampling end of current/voltage Acquisition Circuit and the output of pressure-controlled high-frequency high-power signal generating circuit link, the output of this Acquisition Circuit is connected to the signal input interface place of automatic control circuit and the input of display circuit respectively, the probe segment of temperature humidity detector is placed in the electromagnetic field space of polar-plate-type electric capacity formation, the detector output is connected to the signal input interface place of automatic control circuit and the input of display circuit respectively, and the output interface of automatic control circuit links with the control end and the output power of power supply control end of voltage-controlled high-frequency high-power signal generating circuit respectively.

In addition, the pressure-controlled high-power high-frequency signal generating circuit in the electric main frame constitutes L by pressure-controlled HF signal generator, protection push module circuit, radio frequency power amplifier modular circuit, the coupling of boosting output circuit etc. ₀C ₀The master who the constitutes high-frequency oscillating circuits loop that shakes, the shake frequency of oscillation in loop of this master adopts the control of transferring sensing mode to be subjected to the voltage signal exported from the automatic control circuit output interface, and oscillator signal is input to protection promotion integration module IC ₂14,15 bipods between, IC ₂6 pin link IC through a diode and the primary coil that boosts in the coupling circuit ₂The protection control signal that can cut off the electricity supply through the output of LMDS Light Coupled Device of 5 pin, IC ₂The high-frequency oscillation signal of 3 pin, 1 pin output be input to radio frequency power amplifier module I C again ₂Input carry out power amplifier, high-frequency oscillation signal boosts through mutual inductor T coupling behind the power amplifier, finally being loaded in the mutual capacitance is between the positive/negative plate of mechanical subsidiary engine.

(2) mechanical subsidiary engine is by conveying mechanism, hydrofuge mechanism, capacitor plate, the shielding outer cover, formations such as console, capacitor plate is up and down and be arranged in parallel, anodal following, negative pole is last, positive/negative plate is connected to the output of electric main frame high-frequency signal generation circuit respectively, anode plate is supported under the conveyer belt of conveying mechanism through the high strength insulation, negative plates and whole subsidiary engine shielding outer cover is and electrically connects back ground connection, shielding outer cover top is provided with the hydrofuge air outlet, shielding outer cover bottom is provided with the air inlet that installs shielding new cover additional, the mass transport that is dried import and export dangles and has hung multiple tracks copper wire lace curtaining, and this copper wire lace curtaining is and electrically connects with the shielding outer cover.

The humidity of electric current, voltage signal and medium (tobacco, cigarette) therebetween on the utility model utilization heating pole plate and rate of rise in temperature detection signal are as feedback, after single-chip microcomputer is handled, automatically adjust the electric field frequency and the electric-field intensity of complete machine output, with the control uptake (in the unit interval) of medium (tobacco, cigarette) that be dried to electric field energy.Simultaneously, owing to adopted above-mentioned high-power new unit, make electromagnetic wave generating device can be positioned in the subsidiary engine, positive plate is supported under the conveyer belt through the high strength insulation, negative plate and whole subsidiary engine outer cover electrically connect back ground connection, its inlet and outlet and the thing that is dried are imported and exported and are adopted copper mesh and shell positive connection, to reach the shielding to the electromagenetic wave radiation field.

The utility model utilizes medium heating principle, so advantages such as speed is fast, energy consumption is low, pollution-free are arranged than common tobacco (volume) drying mode, wherein owing to selected novel power device for use, make that the electromagnetic wave generating device volume is little, be convenient to make, and accomplish that very easily the running parameter closed loop controls automatically, to reach the requirement of different medium being carried out the randomly regulating running parameter.The design of the brand new of subsidiary engine makes electromagenetic wave radiation be shielded from substantially in the subsidiary engine body, so can not do specific (special) requirements to environment for use of equipment (as make shielding house, install gauze screen etc. additional) and operating personnel (carrying out longer-term training etc. as need).The electromagnetic wave security protection index of this machine meets IEC standard and national standard requirement.

Accompanying drawing 1 is the electric main frame electrical principle of a utility model block diagram.

Accompanying drawing 2 is the electrical schematic diagram of the pressure-controlled high-frequency high-power signal generating circuit of the electric main frame of the utility model.

Accompanying drawing 3 is the structural representation of the utility model main frame, subsidiary engine.

Introduce an embodiment of the present utility model below in conjunction with accompanying drawing.

Present embodiment is made up of main and auxiliaries two parts.

Accompanying drawing 1 has provided the block diagram of the electric host circuit principle of present embodiment.Whole electric main frame by pressure-controlled high-frequency high-power signal generating circuit 1, automatic control circuit 2, large-scale polar-plate-type electric capacity 3, current and voltage signals Acquisition Circuit 4, humidity hygrosensor 5, display circuit 6, and power supply 7 etc. constitute, electric main frame has realized that closed loop controls automatically.Automatic control circuit is made of single-chip microcomputer and corresponding input/output interface circuit again.(this circuit is a prior art, and physical circuit sees " one chip microcomputer is used and development system ", " electronic circuit complete works-volume 5～digital circuit " two books for details) pressure-controlled high-power high-frequency signal generating circuit (shown in frame of broken lines in the accompanying drawing 1) is made of pressure-controlled HF signal generator 8, protection push module circuit 9, radio frequency power amplifier modular circuit 10, the coupling of boosting output circuit 11.Accompanying drawing 2 has provided the electrical schematic diagram of pressure-controlled high-power high-frequency signal generating circuit.The electromagnetic wave oscillator signal is by C ₀L ₀Produce, frequency adopts transfers the control regulating and controlling voltage of sensing mode by automatic control circuit output, and the change of control voltage makes L ₁Change L ₀Magnetic flux, and then realize the adjustment of frequency of oscillation.High-frequency oscillation signal is through protection push module IC circuit ₂(model is: (model is: IGBT) carry out radio frequency power amplifier, boosted to be coupled by coil T at last and export, be carried on the positive and negative pole plate of mutual capacitance to send into radio frequency power amplifier modular circuit IC1 EXB841).In the whole close loop control circuit of electric main frame, current and voltage signals Acquisition Circuit (this circuit is a prior art, sees " electronic type thermatron " book for details) and contactless humiture detector (this detector Japanese fuji company produces) signal that will gather respectively, detect is delivered to the input interface end and the display circuit of automatic control circuit.Single-chip microcomputer in the automatic control circuit adopts 8031 chips; under the support of corresponding software program; the output interface end of automatic control circuit is exported control signal in real time; power in order to regulation and control frequency that HF signal generator took place and power supply output; when mutual capacitance is short-circuited fault, the protection complete machine of in time cutting off the electricity supply.

The design feature of present embodiment machinery subsidiary engine and electric main frame as shown in Figure 3.Machinery subsidiary engine profile is mesa structure.Electric main frame is arranged in the mechanical subsidiary engine shielding outer cover.Feeding power between main and auxiliary machine and control, feedback signal transmit and finish by tie cable.

The machinery subsidiary engine is by conveying mechanism, hydrofuge mechanism, capacitor plate, the shielding outer cover, formations such as console, capacitor plate is up and down and be arranged in parallel, positive plate 15 is following, negative plate 14 is last, positive/negative plate is connected to the output of the pressure-controlled high-power high-frequency signal generating circuit 19 of electric main frame respectively, anode plate 15 is supported under the conveyer belt of conveying mechanism through the high strength insulation, negative plates 14 is with whole subsidiary engine shielding outer cover 17 and electrically connects back ground connection, shielding outer cover top is provided with hydrofuge air outlet 16, shielding outer cover bottom 20 is provided with the air inlet 18 that installs shielding new cover additional, constitute dehumidification system behind the equipped blower fan, water vapour during in order to the pump drainage Tobacco drying, and carry out air-cooled to electromagnetic wave generating device.The mass transport that is dried import and export dangles and has hung multiple tracks shielding copper mesh 12, and this copper mesh and screening can are and electrically connect, the leakage of fringe radiation when preventing to import and export the two ends empty.Because the HF signal generator of electric main frame is arranged in the shielding outer cover of mechanical subsidiary engine, and the equal reliable ground of main and auxiliary machine machine shell makes that electromagenetic wave radiation is shielded to greatest extent in the subsidiary engine body.Electric field edge between positive/negative plate is limited by high-strength insulating material 13 and big span design.The capacitor cavity that is made of positive/negative plate is sent, sent to the medium that is dried (tobacco, cigarette) by conveying mechanism 21 to through conveyer belt, and transporting velocity is regulated and control by main frame according to technological requirement (as line speed etc.).

For making the normal safe operation of this drying machine and realizing where necessary handling control manually, install the instrument that is provided with electric main frame display circuit, the operation of mechanical subsidiary engine conveying mechanism speed-regulating controling switch, acoustic-optic alarm and manual control device etc. on the console panel of mechanical subsidiary engine concentratedly.

Claims

1, the rapid dryer that grows tobacco, it is made up of electric main frame and mechanical subsidiary engine two large divisions, it is characterized in that:

(1) electric main frame is by pressure-controlled high-frequency high-power signal generating circuit, automatic control circuit, large-scale polar-plate-type electric capacity, the current and voltage signals Acquisition Circuit, the temperature humidity detector, formation such as display circuit and power supply, automatic control circuit is made of single-chip microcomputer and corresponding input/output interface circuit again, the sampling end of current/voltage Acquisition Circuit and the output of signal generating circuit link, the output of this Acquisition Circuit is connected to the signal input interface place of automatic control circuit and the input of display circuit respectively, the probe segment of temperature humidity detector is placed in the electromagnetic field space of polar-plate-type electric capacity formation, the detector output is connected to the signal input interface place of automatic control circuit and the input of display circuit respectively, and the output interface of automatic control circuit links with the control end and the output power of circuit control end of voltage-controlled high-frequency high-power signal generating circuit respectively;

(2) mechanical subsidiary engine is by conveying mechanism, hydrofuge mechanism, capacitor plate, the shielding outer cover, formations such as console, capacitor plate is up and down and be arranged in parallel, positive plate is following, negative plate is last, positive/negative plate is connected to the output of electric main frame high-frequency signal generation circuit respectively, anode plate is supported under the conveyer belt of conveying mechanism through the high strength insulation, negative plates and whole subsidiary engine shielding outer cover is and electrically connects back ground connection, shielding outer cover top is provided with the hydrofuge air outlet, shielding outer cover bottom is provided with the air inlet that installs shielding new cover additional, the mass transport that is dried import and export dangles and has hung multiple tracks shielding copper wire lace curtaining, and this copper wire lace curtaining is with the shielding outer cover and electrically connects.

2, tobacco rapid dryer according to claim 1; it is characterized in that: the pressure-controlled high-power high-frequency signal generating circuit in the electric main frame constitutes L by pressure-controlled HF signal generator, protection push module circuit, radio frequency power amplifier modular circuit, the coupling of boosting output circuit etc. ₀C ₀The master who the constitutes high-frequency oscillating circuits loop that shakes, the shake frequency of oscillation in loop of this master adopts the control of transferring sensing mode to be subjected to the voltage signal exported from the automatic control circuit output interface, and oscillator signal is input to protection promotion integration module IC ₂14,15 bipods between, IC ₂6 pin link IC through a diode and the primary coil that boosts in the coupling circuit ₂The protection control signal that can cut off the electricity supply through the output of LMDS Light Coupled Device of 5 pin, IC ₂The high-frequency oscillation signal of 3 pin, 1 pin output be input to radio frequency power amplifier module I C again ₁Input carry out power amplifier, high-frequency oscillation signal boosts through mutual inductor T coupling behind the power amplifier, finally being loaded in the mutual capacitance is between the positive/negative plate of mechanical subsidiary engine.