CN102748928A - Tunnel type microwave generation magnetron automatic control drying device and method of agricultural products - Google Patents
Tunnel type microwave generation magnetron automatic control drying device and method of agricultural products Download PDFInfo
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- CN102748928A CN102748928A CN2012102675604A CN201210267560A CN102748928A CN 102748928 A CN102748928 A CN 102748928A CN 2012102675604 A CN2012102675604 A CN 2012102675604A CN 201210267560 A CN201210267560 A CN 201210267560A CN 102748928 A CN102748928 A CN 102748928A
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Abstract
The invention discloses a tunnel type microwave generation magnetron automatic control drying device and method of agricultural products. A microwave drying device comprises a feeding hopper chamber, a first connection box body, a control platform, a drying box chamber, a second connection box body, a discharge hopper chamber, a transport system, a drying and cooling system and a programmable logic controller (PLC) control system. The PLC control system comprises a PLC touch screen, a PLC control unit, a transducer for controlling transmission speed of a transmission band, a pressure sensing sensor, a revolution speed sensor and a distribution box, the PLC control system effectively calculates the transmission speed of the transmission band according to transmission ratio and effective transmission radius and calculates time transmitting to each drying box according to preset distance between a feeding hopper to each microwave drying box, and the PLC control unit controls a microwave generation magnetron corresponding to the each microwave drying box to start and stop according to calculated time. The tunnel type microwave generation magnetron automatic control drying device automatically tracks, starts and stops the microwave generation magnetron, avoids no-load running and prolongs service life of the microwave generation magnetron.
Description
Technical field
The present invention relates to a kind of agricultural product tunnel type micro wave generation magnetron and control drying equipment and method automatically.
Background technology
Tunnel type agricultural product microwave dryer is the equipment of continuous drying operation normally, generally is made up of a plurality of relatively independent and drying box that fuse in the hothouse, and the control of each drying box is relatively independent.Agricultural product carry out carrying out in the drying box drying successively in drying.Yet, just get into conveyer belt at dry incunabulum agricultural product through charging aperture, first drying box to second, third ... Deng drying box the individual process that gets into is successively arranged.For fear of unloaded operation, its each microwave magnetron generator needs order unlatching problem successively.Equally when fast drying finishes, from first drying box to second, third ... Get into the unloaded operation state successively Deng having, need close magnetron work successively.It is discontinuous also can throat-fed to take place in the drying, does not have agricultural product on a certain section of the conveyer belt, and the microwave generator on casing top damages magnetron still in unloaded operation.
Technology in the past is in the microwave casing, camera to be set, and the position through the screen viewing agricultural product manually starts or close microwave tube.This mode need manually start or close, and is difficult to control.
Summary of the invention
In order to overcome the deficiency of prior art, the purpose of this invention is to provide a kind of agricultural product tunnel type micro wave generation magnetron and control drying equipment and method automatically.
Agricultural product tunnel type micro wave generation magnetron is controlled drying equipment automatically and is comprised feeding small room, first connect box, operation bench, drying box chamber, second connect box, discharging small room, induction system, drying and cooling system, PLC (Programmable Logic Controller) control system; Be followed successively by feeding small room, first connect box, drying box chamber, second connect box, discharging small room from feeding funnel one side to discharge bucket one side; Operation bench is arranged on above first connect box; The drying box chamber comprises a plurality of microwave drying casings, and dry and cooling system is arranged on above the microwave drying casing; Microwave drying casing top is provided with dehumidification tube, and microwave drying casing top is provided with 6 staggered microwave generation magnetrons, has been provided with observation panel at the microwave drying oven body side surface; Induction system comprises feeding funnel, active rubber roll, conveyer belt, passive rubber roll, reducing motor, discharge bucket; Wherein feeding funnel is located at feeding small room top; It is indoor that initiatively rubber roll is located at feeding funnel; Conveyer belt is parallel to the bottom transverse of microwave drying casing and passes microwave drying casing inside, and it is indoor that passive rubber roll, reducing motor are located at discharge bucket, and discharge bucket is located at outdoor of discharge bucket; Dry and cooling system comprises microwave generation magnetron and circulating cooling system; Circulating cooling system comprises cooling water pipe, cold wind servicing unit and oil stain transformer; The oil stain transformer is arranged on above the microwave generation magnetron; Cooling water pipe is installed in oil stain transformer periphery, and the cold wind servicing unit is arranged on above the oil stain transformer; PLC control system comprises frequency converter, pressure sensitive sensor, speed probe, the distribution box of PLC touch-screen, PLC control module, control transport tape transmission speed; Wherein the frequency converter of PLC touch-screen, distribution box, PLC control module, control transport tape transmission speed is arranged on the operation bench; The pressure sensitive sensor is arranged under the feeding funnel, and speed probe is arranged on the output shaft of reductor.
The microwave generation magnetron autocontrol method of described equipment is: when having agricultural product to fall in the feeding funnel, send signal after agricultural product weight is sensed in the sense of pressure sensitive sensor; Speed probe sends signal after detecting the output speed of reducing motor; PLC control system effectively carries radiuscope to calculate the transport tape transmission speed according to gearratio and rubber roll; Be delivered to time of each drying box according to the distance calculation between predefined feed hopper and each microwave drying casing, the PLC control module is according to the unlatching of each the microwave drying casing microwaves corresponding generation magnetron of time control that calculates or close down.
The beneficial effect that the present invention compared with prior art has:
1) from motion tracking start and stop microwave generation magnetron, avoids no-load running, prolonged the service life of microwave generation magnetron;
2) optimal design the arrangement mode and the control mode of a plurality of microwave generation magnetrons, drying is more even;
3) introduced circulating cooling system, had and stablize adjustable drying condition.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Fig. 1 is that agricultural product tunnel type micro wave generation magnetron is controlled the drying equipment structure sketch map automatically;
Fig. 2 is a microwave generation magnetron distribution schematic diagram of the present invention;
Fig. 3 is a microwave generation magnetron control circuit sketch map of the present invention;
Among the figure, feeding funnel 1, PLC touch-screen 2, distribution box 3, microwave drying casing 4, dehumidification tube 5, cooling water pipe 6, cold wind servicing unit 7, oil stain transformer 8, microwave generation magnetron 9, passive rubber roll 10, discharge bucket 11, reducing motor 12, observation panel 13, conveyer belt 14, pressure sensitive sensor 15, speed probe 16, active rubber roll 17.
The specific embodiment
Agricultural product tunnel type micro wave generation magnetron is controlled drying equipment automatically and is comprised that feeding small room, first connect box, operation bench, drying box chamber, second connect box, discharging small room, induction system, drying and cooling system, PLC control system; Be followed successively by feeding small room, first connect box, drying box chamber, second connect box, discharging small room from feeding funnel 1 one sides to discharge bucket 11 1 sides; Operation bench is arranged on above first connect box; The drying box chamber comprises a plurality of microwave drying casings 4, is generally 3-8, and drying box adopts high-quality corrosion resistant plate, double-deck black rubber and plastic warming plate.Dry and cooling system is arranged on above the microwave drying casing 4; Microwave drying casing 4 tops are provided with dehumidification tube 5, and microwave drying casing 4 tops are provided with 6 staggered microwave generation magnetrons 9, have been provided with observation panel 13 in microwave drying casing 4 sides; Induction system comprises feeding funnel 1, active rubber roll 17, conveyer belt 14, passive rubber roll 10, reducing motor 12, discharge bucket 11; Wherein feeding funnel 1 is located at feeding small room top; It is indoor that initiatively rubber roll 17 is located at feeding funnel; Conveyer belt 14 is parallel to the bottom transverse of microwave drying casing 4 and passes microwave drying casing 4 inside, and passive rubber roll 10, that reducing motor 12 is located at discharge bucket is indoor, and discharge bucket 11 is located at outdoor of discharge bucket; Dry and cooling system comprises microwave generation magnetron 9 and circulating cooling system; Circulating cooling system comprises cooling water pipe 6, cold wind servicing unit 7 and oil stain transformer 8; Oil stain transformer 8 oil-immersed water-cools are cooling fuel tanks, adopt five water circulation types of cooling, and oil stain transformer 8 is arranged on above the microwave generation magnetron 9; Cooling water pipe 6 is installed in oil stain transformer 8 peripheries, and cold wind servicing unit 7 is arranged on above the oil stain transformer 8; PLC control system comprises frequency converter, pressure sensitive sensor 15, speed probe 16, the distribution box 3 of PLC touch-screen 2, PLC control module, control transport tape transmission speed; Wherein the frequency converter of PLC touch-screen 2, distribution box 3, the PLC control module of realizing function control, control transport tape transmission speed is arranged on the operation bench; Pressure sensitive sensor 15 is arranged under the feeding funnel 1, and speed probe 16 is arranged on the output shaft of reductor 12.Like Fig. 1 by the tunnel type agricultural product microwave dryer of forming by 5 grades of microwave drying casings 4; In the second level of Fig. 1 microwave drying casing 4 sketch mapes (other microwave drying casings 4 at different levels do not mark out drying and cooling system in detail); Microwave generation magnetron 9 is installed in microwave drying casing 4 tops of relatively independent control; Have 6 magnetrons and be staggered (this arrangement sees Fig. 2 for details), can the microwave radiant energy be radiated on the hothouse inner drying plane comparatively equably; Circulating cooling system is made up of cooling water pipe 6, cold wind servicing unit 7 etc.; Oil stain transformer 8 oil-immersed water-cools are cooling fuel tanks, adopt five water circulation types of cooling.
Like Fig. 3, the microwave generation magnetron 9 of a plurality of unit microwave drying casings 4 needs start and stop successively or is interrupted start and stop separately separately, and the PLC control module is controlled magnetron relay K M1.Mark wherein each 6 microwave generation magnetron 9 of two unit microwave drying casings 4 among the figure, the corresponding microwave drying casing 4 of per two relay K M1, each microwave generation magnetron 9 is made up of independent control loop, and is noiseless each other.Three microwave generation magnetrons 9 of each relay K M1 control can be realized the control that reduces by half of unit box power.Relay K M1, KM2 are very common general knowledge, here do not describe in detail.
Agricultural product tunnel type micro wave generation magnetron autocontrol method is: when having agricultural product to fall in the feeding funnel 1, send signal after agricultural product weight is sensed in pressure sensitive sensor sense 15; Speed probe 16 sends signal after detecting the output speed of reducing motor 12; PLC control system effectively carries radiuscope to calculate the transport tape transmission speed according to gearratio and rubber roll; Be delivered to time of each drying box according to the distance calculation of 4 of predefined feed hopper 1 and each microwave drying casings, the PLC control module is according to the unlatching of each the microwave drying casing 4 microwaves corresponding generation magnetron 9 of time control that calculate or close down.
Start transport tape 14 after the out-of-date energized of working, speed probe 16 detects the output speed of reducing motor 12 and sends signal, and PLC control system will calculate transport tape transmission speed V according to the gearratio and the rubber roll effective radius of transmission system; Sense feed hopper 1 when pressure sensitive sensor sense 15 and begun charging, be delivered to the time of each drying box according to the distance calculation Chinese medicine to be dried of 4 of predefined feed hopper 1 and each microwave drying casings.For example; As Fig. 1 from left to right first order microwave drying casing 4 be that L1, second level microwave drying casing 4 are L2 with feed hopper 1 distance with feed hopper 1 distance, can calculate the time that the agricultural product conveying reaches first and second drying box according to conveyer belt 14 transporting velocity V like this and be respectively T1=L1/V and T2=L2/V.Arrive the time of delivery of other microwave drying casing 4.The PLC control module is according to the unlatching of the time of calculating through 2 groups of microwave generation magnetrons 9 of two each microwave drying casings 4 of relay K M1 control.Different with the position of feed hopper 1 according to each microwave drying casing 4, PLC control system controls the 9 unlatching work of corresponding drying box 4 microwave generation magnetrons.
Equally, when feed hopper 1 stops to carry agricultural product, pressure sensitive sensor 15 will send signal, calculate the time that stops to each microwave drying casing 4 according to the distance of 4 of predefined feed hopper 1 and each microwave drying casings.The PLC control module is closed and the stopping of microwave generation magnetron 9 according to two relay K M1 switches of each the microwave drying casing 4 of corresponding control of time that calculates.It is discontinuous that charging aperture 1 charging also can take place in the drying, charging occurs and interrupt, and controls the automatic shutter of two relay K M1 switches of each microwave drying casing 4 equally through PLC control system.
In sum, the present invention has reached the purpose from motion tracking start and stop microwave generation magnetron 9, has avoided 9 no-load runnings of microwave generation magnetron, has prolonged service life.
Claims (2)
1. an agricultural product tunnel type micro wave generation magnetron is controlled drying equipment automatically, it is characterized in that it comprises that feeding small room, first connect box, operation bench, drying box chamber, second connect box, discharging small room, induction system, drying and cooling system, PLC control system; Be followed successively by feeding small room, first connect box, drying box chamber, second connect box, discharging small room from feeding funnel (1) one side to discharge bucket (11) one sides; Operation bench is arranged on above first connect box; The drying box chamber comprises a plurality of microwave drying casings (4), and dry and cooling system is arranged on above the microwave drying casing (4); Microwave drying casing (4) top is provided with dehumidification tube (5), and microwave drying casing (4) top is provided with 6 staggered microwave generation magnetrons (9), is provided with observation panel (13) in microwave drying casing (4) side; Induction system comprises feeding funnel (1), active rubber roll (17), conveyer belt (14), passive rubber roll (10), two reducing motors (12), discharge bucket (11); Wherein feeding funnel (1) is located at feeding small room top; It is indoor that initiatively a rubber roll (17) and a reducing motor (12) are located at feeding funnel; Conveyer belt (14) is parallel to the bottom transverse of microwave drying casing (4) and passes microwave drying casing (4) inside; Passive rubber roll (10), that another reducing motor (12) is located at discharge bucket is indoor, and discharge bucket (11) is located at outdoor of discharge bucket; Dry and cooling system comprises microwave generation magnetron (9) and circulating cooling system; Circulating cooling system comprises cooling water pipe (6), cold wind servicing unit (7) and oil stain transformer (8); Oil stain transformer (8) is arranged on above the microwave generation magnetron (9); Cooling water pipe (6) is installed in oil stain transformer (8) periphery, and cold wind servicing unit (7) is arranged on above the oil stain transformer (8); PLC control system comprises frequency converter, pressure sensitive sensor (15), speed probe (16), the distribution box (3) of PLC touch-screen (2), PLC control module, control transport tape transmission speed; Wherein the frequency converter of PLC touch-screen (2), distribution box (3), PLC control module, control transport tape transmission speed is arranged on the operation bench; Pressure sensitive sensor (15) is arranged under the feeding funnel (1), and speed probe (16) is arranged on the output shaft of reductor (12).
2. one kind is used according to claim 1 the agricultural product tunnel type micro wave generation magnetron of equipment to control automatically
, it is characterized in that when having agricultural product to fall in the feeding funnel (1), sending signal after agricultural product weight is sensed in pressure sensitive sensor sense (15); Speed probe (16) sends signal after detecting the output speed of reducing motor (12); PLC control system effectively carries radiuscope to calculate the transport tape transmission speed according to gearratio and rubber roll; Be delivered to time of each drying box according to the distance calculation between predefined feed hopper (1) and each microwave drying casing (4), the PLC control module is according to the unlatching of each microwave drying casing (4) the microwaves corresponding generation magnetron (9) of time control that calculates or close down.
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| CN2012102675604A CN102748928A (en) | 2012-07-30 | 2012-07-30 | Tunnel type microwave generation magnetron automatic control drying device and method of agricultural products |
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| CN2012102675604A CN102748928A (en) | 2012-07-30 | 2012-07-30 | Tunnel type microwave generation magnetron automatic control drying device and method of agricultural products |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267412A (en) * | 2013-05-10 | 2013-08-28 | 江苏赢洋实业股份有限公司 | Automatic control system for microwave drying machine |
| CN103423979A (en) * | 2013-09-09 | 2013-12-04 | 南京研正微波设备厂 | Tunnel type microwave drier |
| CN104188071A (en) * | 2014-07-14 | 2014-12-10 | 浙江大学 | Tunnel type vegetable microwave drying machine and automatic no-load preventing method thereof |
| CN107084608A (en) * | 2017-05-25 | 2017-08-22 | 宁夏共享模具有限公司 | A kind of sand mold, which is used, passes through type micro-wave drying system |
| CN107401910A (en) * | 2017-07-31 | 2017-11-28 | 安徽华众焊业有限公司 | A kind of removable welding rod tray structure |
| CN109813089A (en) * | 2019-01-31 | 2019-05-28 | 云浮中科石材创新科技有限公司 | A kind of slabstone microwave drying equipment automatic control device and method |
| WO2020254027A1 (en) * | 2019-06-19 | 2020-12-24 | Lars Engel | System and method for drying hemp |
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| CN200946973Y (en) * | 2006-09-04 | 2007-09-12 | 朱树伟 | Tunnel-like pedrail and microwave drying apparatus |
| CN201096444Y (en) * | 2007-06-28 | 2008-08-06 | 武长新 | Micro-wave drying equipment |
| DE202010000548U1 (en) * | 2009-11-12 | 2010-07-15 | Temminghoff, Gerhard | Drying device for loose material |
| CN202267343U (en) * | 2011-09-07 | 2012-06-06 | 四川中测量仪科技有限公司 | Drying equipment capable of heating materials by microwave |
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Patent Citations (4)
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| CN200946973Y (en) * | 2006-09-04 | 2007-09-12 | 朱树伟 | Tunnel-like pedrail and microwave drying apparatus |
| CN201096444Y (en) * | 2007-06-28 | 2008-08-06 | 武长新 | Micro-wave drying equipment |
| DE202010000548U1 (en) * | 2009-11-12 | 2010-07-15 | Temminghoff, Gerhard | Drying device for loose material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267412A (en) * | 2013-05-10 | 2013-08-28 | 江苏赢洋实业股份有限公司 | Automatic control system for microwave drying machine |
| CN103423979A (en) * | 2013-09-09 | 2013-12-04 | 南京研正微波设备厂 | Tunnel type microwave drier |
| CN103423979B (en) * | 2013-09-09 | 2016-03-09 | 南京研正微波设备厂 | A kind of tunnel type microwave drying machine |
| CN104188071A (en) * | 2014-07-14 | 2014-12-10 | 浙江大学 | Tunnel type vegetable microwave drying machine and automatic no-load preventing method thereof |
| CN107084608A (en) * | 2017-05-25 | 2017-08-22 | 宁夏共享模具有限公司 | A kind of sand mold, which is used, passes through type micro-wave drying system |
| CN107401910A (en) * | 2017-07-31 | 2017-11-28 | 安徽华众焊业有限公司 | A kind of removable welding rod tray structure |
| CN109813089A (en) * | 2019-01-31 | 2019-05-28 | 云浮中科石材创新科技有限公司 | A kind of slabstone microwave drying equipment automatic control device and method |
| WO2020254027A1 (en) * | 2019-06-19 | 2020-12-24 | Lars Engel | System and method for drying hemp |
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Application publication date: 20121024 |