CN105824284A - Over-temperature rapid cooling method for drying layer of grain dryer - Google Patents
Over-temperature rapid cooling method for drying layer of grain dryer Download PDFInfo
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- CN105824284A CN105824284A CN201610138247.9A CN201610138247A CN105824284A CN 105824284 A CN105824284 A CN 105824284A CN 201610138247 A CN201610138247 A CN 201610138247A CN 105824284 A CN105824284 A CN 105824284A
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- temperature
- processor
- cooling method
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- hothouse
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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
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25268—PLD programmable logic device
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses an over-temperature rapid cooling method for a drying layer of a grain dryer, wherein the method is implemented by using a PLC. The PLC comprises a processor, a storage device, and an input-output interface circuit, wherein the storage device and the input-output interface circuit are connected with the processor. To be specific, the method comprises: an input port of the input-output interface circuit collects a drying chamber temperature signal of a grain dryer and transmits the signal to the processor, and the processor compares the collected temperature with a preset temperature; and when the drying chamber temperature exceeds an upper limit of the preset temperature, the processor outputs a control instruction to an output port of the input-output interface circuit and then an air inlet valve arranged at a branch pipeline is controlled to be turned on to introduce natural air with a lower external temperature, so that the drying chamber temperature can be reduced rapidly. According to the method, when the drying chamber temperature is higher than the upper limit of the preset temperature, the instruction is outputted by the PLC to control the air inlet valve arranged at the branch pipeline to be turned on and thus the natural air with the low external temperature is led into the drying chamber, so that the temperature can be reduced to the needed value rapidly.
Description
Technical field
The present invention relates to foodstuff drying device technical field of temperature control, be specifically related to a kind of foodstuff drying device drying layer overtemperature fast cooling method.
Background technology
Grain crack rate is the important indicator of evaluation Oryza glutinosa technological quality.The Oryza glutinosa that percent cracked rice is high, particularly crackle many and deep time, add and be easily broken off man-hour, unsuitable machining high-precision rice, otherwise can make to crack rice increases, reduction rice milling yield, is uneconomic.
The factor producing quick-fried waist is a lot, drought, disease, white harvest excessively, machinery strike, hard hit, and Paddy With High Moisture Content Stored is by being dried and cooling drastically drastically, or make moist moisture absorption time internal the expansion with surface shrinkage of the grain of rice uneven etc. all can make Cracked Rice.Wherein, in drying course, temperature is too high is to cause one of common cause that percent cracked rice is high.
Existing foodstuff drying device controls often to gather drying chamber Temperature Feedback for the temperature in drying course and controls the flow process of the hot blast temperature that hot air generator produces to control module control module, this feedback mechanism is relatively slow, too high longer to reducing hot blast temperature flow process from collecting drying temperature.Therefore, need that exploitation is a kind of can quickly be reduced hothouse temperature thus ensure the control method of hothouse constant temperature badly.
Summary of the invention
The purpose of the present invention is aiming at above-mentioned deficiency, it is provided that a kind of foodstuff drying device drying layer overtemperature fast cooling method.
Technical scheme is as follows:
A kind of foodstuff drying device drying layer overtemperature fast cooling method, can fast cooling when drying layer temperature is too high, described drying layer includes air inlet, hothouse and exhaust outlet, described hothouse is connected with the shunting layer of foodstuff drying device, described air inlet is connected with hot air duct, the other end of hot air duct is connected with hot air generator, and hot air duct is provided with the branch line being connected with air.Described overtemperature fast cooling method is realized by PLC, and described PLC includes processor and the memorizer being connected with described processor and input/output interface circuit；Comprise the concrete steps that: the input port of input/output interface circuit gathers the hothouse temperature signal of foodstuff drying device, is transferred in processor, and collecting temperature and preset temperature are compared by processor；When hothouse temperature is beyond the preset temperature range upper limit, processor output control instruction is to the output port of input/output interface circuit, and then control the air inlet valve that is arranged on branch line and open, introduce the natural wind that ambient temperature is relatively low, thus quickly reduce hothouse temperature.
Further, described processor connects human-computer interaction module.
Further, described human-computer interaction module is touch screen circuit.
Further, described processor is also connected with the telecommunication circuit being used for and host computer communicates.
Further, described telecommunication circuit uses RS485 interface.
The present invention has the following technical effect that
The foodstuff drying device drying layer overtemperature fast cooling method of the present invention, receive the temperature detection signal of hothouse by PLC and compare with preset temperature, when hothouse temperature is higher than the preset temperature upper limit, PLC output order controls the air inlet valve on branch line and opens, thus natural wind relatively low for ambient temperature is introduced hothouse, temperature is made to be quickly reduced to temperature required, hothouse temperature is effectively ensured in drying course, remains at steady temperature, corn quality in dry run is effectively ensured.
Accompanying drawing explanation
Fig. 1 is the structural representation of the foodstuff drying device drying layer of the embodiment of the present invention；
Fig. 2 is the PLC module composition schematic diagram of the foodstuff drying device drying layer overtemperature fast cooling employing of the embodiment of the present invention；
Fig. 3 is the flow chart of steps of the overtemperature fast cooling method of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme is clearly and completely described.
The following is the specific embodiment of the present invention.
As shown in Figure 1, in the foodstuff drying device drying layer of the present embodiment, described hothouse is connected with the shunting layer of foodstuff drying device, described drying layer includes air inlet, hothouse and exhaust outlet, described air inlet is connected with hot air duct, the other end of hot air duct is connected with hot air generator, and hot air duct is provided with the branch line being connected with air.Temperature sensor it is provided with in hothouse.
As shown in Figure 2, the overtemperature fast cooling of the present embodiment uses PLC to control, and described PLC includes processor and the memorizer being connected with described processor and input/output interface circuit.Input/output interface circuit includes again: for gathering the input port of the sensor detection signal of described foodstuff drying device drying layer and for exporting the control instruction output port to the actuator of described foodstuff drying device drying layer.Processor receives described sensor detection signal through input port and generates described control instruction to described output port；Processor is also associated with human-computer interaction module.
In the present embodiment, sensor detection signal refers to the hot blast temperature signal of hothouse, and its collection is the temperature sensor by being arranged in hothouse；Actuator refers to the air inlet valve being arranged on branch line, and this air inlet valve can introduce air into hot air duct.
As shown in Figure 3, the drying layer overtemperature fast cooling method flow of the present embodiment is as follows: processor receives real-time hothouse temperature signal, when hothouse temperature is beyond the temperature range preset, processor opens the instruction of air inlet valve to the air inlet valve being arranged on branch line by output port output, natural wind relatively low for ambient temperature is introduced hothouse, temperature is made to be quickly reduced to temperature required, hothouse temperature is effectively ensured in drying course, remains at steady temperature, corn quality in dry run is effectively ensured.
Human-computer interaction module in the present embodiment is touch screen circuitry, and human-computer interaction module is connected with processor, as shown in Figure 2.Touch screen circuit is used to substitute traditional fault-signal and multiple control knob to control simple interface, it is simple to fast control.
Additionally, as shown in Figure 2, manipulation personnel remotely control for convenience, and processor is provided with the telecommunication circuit for communicating with host computer.Telecommunication circuit in the present embodiment is for using RS485 interface, in order to control room remotely manages, and has digital intelligent control, touch screen centralized displaying and the advantage such as control and simple interface.
In sum, the foodstuff drying device drying layer overtemperature fast cooling method of the present embodiment, the temperature detection signal of hothouse is received and through action by PLC, when hothouse temperature is higher than the preset temperature upper limit, PLC output order controls the air inlet valve on branch line and opens, thus natural wind relatively low for ambient temperature is introduced hothouse, temperature is made to be quickly reduced to temperature required, hothouse temperature is effectively ensured in drying course, remains at steady temperature, corn quality in dry run is effectively ensured.
Above example is only the preferred embodiments of the present invention rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.Simultaneously, the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention, for one of ordinary skill in the art, thought according to the present invention, the most all will change, in sum, this specification content should not be construed as limitation of the present invention.
Claims (5)
1. a foodstuff drying device drying layer overtemperature fast cooling method, can fast cooling when drying layer temperature is too high, described drying layer includes air inlet, hothouse and exhaust outlet, described hothouse is connected with the shunting layer of foodstuff drying device, described air inlet is connected with hot air duct, the other end of hot air duct is connected with hot air generator, and hot air duct is provided with the branch line being connected with air；It is characterized in that, described overtemperature fast cooling method is realized by PLC, and described PLC includes processor and the memorizer being connected with described processor and input/output interface circuit；
Comprise the concrete steps that: the input port of input/output interface circuit gathers the hothouse temperature signal of foodstuff drying device, is transferred in processor, and collecting temperature and preset temperature are compared by processor；When hothouse temperature is beyond the preset temperature range upper limit, processor output control instruction is to the output port of input/output interface circuit, and then control the air inlet valve that is arranged on branch line and open, introduce the natural wind that ambient temperature is relatively low, thus quickly reduce hothouse temperature.
A kind of foodstuff drying device drying layer overtemperature fast cooling method the most according to claim 1, it is characterised in that: described processor connects human-computer interaction module.
A kind of foodstuff drying device drying layer overtemperature fast cooling method the most according to claim 2, it is characterised in that: described human-computer interaction module is touch screen circuit.
A kind of foodstuff drying device drying layer overtemperature fast cooling method the most according to claim 1, it is characterised in that: described processor is also connected with the telecommunication circuit being used for and host computer communicates.
A kind of foodstuff drying device drying layer overtemperature fast cooling method the most according to claim 4, it is characterised in that: described telecommunication circuit uses RS485 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138247.9A CN105824284A (en) | 2016-03-11 | 2016-03-11 | Over-temperature rapid cooling method for drying layer of grain dryer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138247.9A CN105824284A (en) | 2016-03-11 | 2016-03-11 | Over-temperature rapid cooling method for drying layer of grain dryer |
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| CN105824284A true CN105824284A (en) | 2016-08-03 |
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| CN201610138247.9A Pending CN105824284A (en) | 2016-03-11 | 2016-03-11 | Over-temperature rapid cooling method for drying layer of grain dryer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313157A (en) * | 1995-05-22 | 1996-11-29 | Yamamoto Mfg Co Ltd | Burner inspecting device for hot air generator of grain dryer |
| CN203771961U (en) * | 2014-04-02 | 2014-08-13 | 佛冈明阳机械有限公司 | Automatic thermostat of grain drying machine |
| CN104482751A (en) * | 2014-12-11 | 2015-04-01 | 华南农业大学 | Method and device for eliminating thermal inertia of hot air drier |
| CN204438737U (en) * | 2015-01-07 | 2015-07-01 | 福田雷沃国际重工股份有限公司 | A kind of dryer temperature control device |
| CN105341624A (en) * | 2015-11-26 | 2016-02-24 | 成都九十度工业产品设计有限公司 | Drying system for seafoods |
-
2016
- 2016-03-11 CN CN201610138247.9A patent/CN105824284A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313157A (en) * | 1995-05-22 | 1996-11-29 | Yamamoto Mfg Co Ltd | Burner inspecting device for hot air generator of grain dryer |
| CN203771961U (en) * | 2014-04-02 | 2014-08-13 | 佛冈明阳机械有限公司 | Automatic thermostat of grain drying machine |
| CN104482751A (en) * | 2014-12-11 | 2015-04-01 | 华南农业大学 | Method and device for eliminating thermal inertia of hot air drier |
| CN204438737U (en) * | 2015-01-07 | 2015-07-01 | 福田雷沃国际重工股份有限公司 | A kind of dryer temperature control device |
| CN105341624A (en) * | 2015-11-26 | 2016-02-24 | 成都九十度工业产品设计有限公司 | Drying system for seafoods |
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| CB02 | Change of applicant information |
Address after: Granite County of Hefei City, Anhui province 230000 Feixi Zhenyuan Sun Ji Xiang textile factory Applicant after: Anhui new agricultural Limited by Share Ltd Address before: Granite County of Hefei City, Anhui province 230000 Feixi Zhenyuan Sun Ji Xiang textile factory Applicant before: ANHUI XINSHENGLI BIOLOGY TECHNOLOGY CO., LTD. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160803 |
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| RJ01 | Rejection of invention patent application after publication |