JPH06103149B2 - Grain drying equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a grain drying device, and more particularly to a grain drying device for performing a grain drying process with a drying wind.

[Prior Art] In order to dry a grain, a circulation type grain drying device is used in which the grain is circulated and fluidized in the machine body to feed dry air to dry the grain.

In this type of grain drying device, a grain flow-down passage is formed between an air guide passage and an exhaust passage that are partitioned by opposing air-permeable partition walls. While allowing the grain stretched in the grain drying device to naturally flow down in the grain flow path, a drying air is sent to perform a drying process.

This conventional grain drying device has a built-in microcomputer for controlling drying. When the grain type (ie, paddy, beer barley, barley, wheat, etc.) and the amount of swelling are set at the beginning of the drying operation, this micro computer stores it in the read-on memory (ROM) of the micro computer while considering the outside air time. The hot air temperature control is automatically performed according to the drying processing program.

Further, according to the set type of grain, the electric resistance of the grain is measured, and the moisture conversion for converting it into the moisture content is automatically performed. Therefore, by setting the water content setting dial to the target water content, the operation can be automatically stopped when the water content of the grain reaches the target water content.

Furthermore, depending on the model, the grain circulation speed in the grain drying device can be changed.

As described above, in the conventional grain drying device, when a plurality of conditions (type of grain, amount of swelling, etc.) are set to desired values, the drying process is performed according to the drying process program stored in the ROM of the built-in microcomputer. It has become so.

By the way, in this grain drying device, the maximum storage amount of the stake, the performance of the burner, the shape and area of the grain flow path, or the size of the wind tunnel are different for each model, so the drying performance and the drying capacity are different for each model. Therefore, it is necessary to carry out the drying operation with the drying processing program suitable for the model. In particular, the temperature and operating pattern of the drying air (high temperature at the beginning of drying and low temperature at the end of drying, or vice versa) have a great influence on the quality of the grain after drying. Therefore, a drying treatment program must be set for each model.

Therefore, conventionally, a drying processing program is stored in one ROM for each different model, and the drying operation is performed according to this drying processing program. For example, in the case of three different types of grain drying apparatuses, the drying operation is performed by the different drying processing programs for each type using the three types of ROM in which the three types of drying processing programs are stored.

[Problems to be Solved by the Invention] Therefore, in the conventional grain drying apparatus, it is necessary to prepare a plurality of types of ROMs storing different drying processing programs for each model, which is not versatile and costly. was there.

In consideration of the above facts, the present invention does not require the operator to perform a complicated work such as selection of a drying processing program, and even with different models, drying is performed with a drying processing program that is versatile and suitable for the model to be used. The aim is to obtain a grain dryer that can be operated.

[Means for Solving Problems] A grain drying device according to the present invention stores a storage unit that stores a program capable of controlling different drying processes for each model, a determination unit that determines the model, and a storage unit that stores the storage unit. Setting means for setting a drying processing program according to the model determined based on the set program, and control means for automatically performing drying control according to the set drying processing program are provided.

[Operation] In the grain drying apparatus having the above-described configuration, the storage unit stores a program capable of controlling the drying process that is different for each model. When the grain drying device is operated, the model of the device is determined by the determining means, and the drying processing program corresponding to the determined model is set by the setting means. Further, the drying process is performed while being automatically controlled by the control unit according to the set drying process program.

The storage unit stores programs that can control different drying processes depending on the model, so you can set and apply a drying process program regardless of the model of the grain drying device. Drying operation can be performed only by using the storage unit of. For this reason, it is not necessary to prepare a drying processing program for each model or to select the program.

[Effects of the Invention] As described above, in the grain drying apparatus according to the present invention, it is possible to perform a complicated work such as preparing a storage unit storing a drying processing program for each model or selecting an operator from the drying processing program. There is no need to do it, and even different models can be operated by a single storage unit with a drying processing program suitable for the model to be used, improving versatility and workability, and only a single storage unit. Therefore, it is possible to reduce the cost because it can be manufactured.

[Embodiment] FIG. 1 shows an overall perspective view of a grain drying device 10 according to an embodiment of the present invention, and FIG. 2 shows a schematic sectional view of the grain drying device 10.

The upper part of the grain drying device 10 is a grain tank 12 so that grains can be stored. A grain amount sensor 13 is arranged in the grain tank 12 so that the grain storage amount can be detected. Further, a grain temperature sensor 14 is arranged in the grain tank 12 so that the grain temperature can be detected.

A drying unit 15 is arranged below the grain tank 12. Drying part 15
An air guide passage 16 is formed by an air-permeable partition wall in the container so that the dry air can be fed to the grain in the drying section 15. A burner 18 is arranged in front of the air guide passage 16, and a suction / exhaust fan 20 is arranged further behind. Therefore, the dry air generated by the burner 18 is sucked by the suction air blower 20 and is sent to the air guide passage 16, and after absorbing the moisture of the grain in the drying unit 15, the grain air drying device via the suction air blower 20. 10 It is designed to be discharged outside.

Further, temperature sensors 22 and 24 are arranged inside the air guide passage 16 and behind the suction / exhaust air blower 20, respectively, so that the hot air temperature and the exhaust air temperature can be detected.

A shutter drum 26 is arranged below the drying section 15 so that the grains in the drying section 15 are fed downward. Below the shutter drum 26 is a screw conveyor 28.
Are arranged so that the grain fed by the shutter drum 26 can be conveyed to the front side of the grain drying device 10.

A bucket conveyor 30 is provided upright at the end of the lower screw conveyor 28 in the transfer direction so that grains can be lifted and transferred to the uppermost part of the grain drying device 10. The upper end of the bucket conveyor 30 corresponds to one end of the upper screw conveyor 32, and the rotary equalizer 34 is arranged at the other end of the upper screw conveyor 32. Therefore, the lifted and conveyed grain is conveyed to the central portion of the grain drying device 10 by the upper screw conveyor 32, and thereafter, is evenly distributed in the grain tank 12 by the rotary equalizer 34. There is.

In addition, an outside air temperature sensor 35 and a humidity sensor 37 are arranged in the grain drying device 10 so that the outside air condition can be detected respectively.

A control circuit is arranged in the control panel 38 on the front surface of the grain drying device 10. As shown in FIG. 3, the control circuit includes a storage unit 40, a central processing unit (CPU) 44, an input circuit 46, an output circuit 48, and a bus connecting these. In the storage unit 40, both a read only memory (ROM) and a random access memory (RAM) are installed.

The ROM stores a basic drying processing program for controlling the hot air temperature, the air volume, the circulation speed, and the operation pattern of the grain drying device 10 and determining the moisture conversion rate. A plurality of different basic dry processing programs are stored for each model and can be selected according to the model to be used.

In addition, this basic drying processing program changes the control contents by inputting data such as hot air temperature and circulation speed that are determined according to the type of grain (rice, barley, wheat, beer, etc.) and the amount of grain. It can be changed.

These data are set by the grain switching dial or the swelling amount dial arranged on the control panel 38, and the data according to the set values are automatically input.

The output circuit 48 is connected to a drive device relay circuit 50 such as a motor for driving the suction / exhaust fan 20 or a motor for driving the shutter drum 26. In addition, the aforementioned various sensors are respectively connected to the input circuit 46, and further, DIP (Dual Inline Package)
Switch 52 is connected. The DIP switch 52 is arranged on the front surface of the control panel 38 and has a plurality of different switch levers. Each switch lever is in the ON state or
The combination of the OFF state is set for each type of grain drying device, and it is possible to supply the discrimination signal of the type of grain drying device to the CPU 44 via the input circuit 46 depending on the combination state of the switch lever. .

Based on this signal, the CPU 44 selects one of the plurality of basic drying processing programs stored in the ROM, which corresponds to the model, and the basic drying processing program of grain is determined by this.

Next, the operation of this embodiment will be described.

The grain drying device 10 is already set at the time of manufacture so that the switch lever of the DIP switch 52 is in a combined state corresponding to the model. When operating the grain drying device 10, the operator operates a grain switching dial, a swelling amount dial, or the like in accordance with the type of grain to be dried or the swelling amount, and inputs necessary data.

When the grain drying device 10 starts operating, control is performed according to the flow chart shown in FIG. At step 102, the discrimination signal of the model set by the DIP switch 52 is read into the CPU 44 via the input circuit 46. Further, in step 104, the model is discriminated based on this discrimination signal.

Next, in steps 106 to 110, the basic dry processing program corresponding to the model is selected and read out from the plurality of basic dry processing programs stored in the ROM of the storage unit 40, and the basic dry processing program is selected for the type of grain or the amount of overhang. A corresponding drying processing program is set.

Further, in steps 112 to 116, necessary data are taken in from the grain temperature sensor 14, the hot air temperature sensor 22, the exhaust air temperature sensor 24, the outside air temperature sensor 35, the humidity sensor 37, etc., and further proceed to steps 118 to 122 to set respectively. The grain drying device 10 is operated according to the drying processing program.

When the grain drying device 10 is driven, the grains are transferred to the shutter drum.
While being fed by 26, it is dried by being fed with dry air from the air guide passage 16 and further circulated and circulated in the apparatus by the lower screw conveyor 28, the bucket conveyor 30, the upper screw conveyor 32 and the rotary equalizer 34. Meanwhile, the drying process is repeated.

At this time, the CPU 44 automatically controls the hot air temperature, the air flow rate, the circulation speed, the operation pattern and the moisture conversion rate in consideration of the signal from each sensor input via the input circuit 46, and the drive device via the output circuit 48. The operation signal is output to the relay circuit 50. Therefore, the hot air temperature and the operation pattern are automatically controlled by the fuel supply amount of the burner 18, the air amount and the operation pattern are automatically controlled by the rotation speed of the suction / exhaust fan 20, and the circulation speed and the operation pattern are automatically controlled by the driving speed of the shutter drum 26. The drying process is controlled and performed.

As described above, in this embodiment, even if the grain drying device 10 is a different model, the operator can automatically operate the grain drying device 10 simply by operating the grain switching dial or the swelling amount dial, ROM that stores the dry processing program
It is possible to improve workability by not having to prepare each model for each model or to perform a complicated work such as the operator selecting this drying processing program, and reduce the cost because only a single storage unit needs to be manufactured. You can also plan.

In the present embodiment, the ROM of the storage unit 40 includes the grain drying device 1
There are multiple types of 0 different drying programs stored for each model, and the configuration is selected by the model identification signal according to the model to be used. However, the configuration is not limited to this, and the parts common to each model are basically It may be configured such that it is stored as a program and only different parts are stored as a program for each model. In this case, the stored model-specific program may be selected by a model identification signal or the like, and the drying processing program may be set together with the basic program common to each model.

Further, in the present embodiment, the ROM of the storage unit 40 is provided in the grain drying device 1
A basic drying process program that controls the hot air temperature, air flow rate, circulation rate, and operation pattern of 0 and determines the moisture conversion rate is stored, and data such as the type of grain and the amount of swelling is input to control the contents of the control. However, the present invention is not limited to this, and the control content may be changed according to conditions such as grain variety, region or crop pattern. By conditions such as variety, region or pattern,
A configuration may be adopted in which a drying processing program corresponding to the model of the grain drying device 10 is stored and selected from the stored programs according to the grain to be dried and the model used.

Further, in the present embodiment, the storage unit 40 is integrally fixed in the control circuit, but the present invention is not limited to this, and it may be a card-shaped semiconductor storage device or a disk-shaped magnetic storage device and from the grain drying device 10 main body. It may be configured to be detachable. In this case, it is possible to carry out the drying operation with a drying processing program suitable for each model by preparing a single storage device even for different models.

In addition, various removable storage devices are prepared according to conditions such as grain type, region, and crop, and each storage device stores a drying processing program for each type of grain drying device 10 for use. A configuration may be adopted in which each model is automatically selected and operated. Also in this case, the data such as the type of grain and the amount of grain is not limited to be input with a dial or the like, and the drying processing program may be stored according to these conditions. Even in this case, it is not necessary to prepare or select a drying processing program for each different model, and it is possible to perform a drying operation with an operation program suitable for each model only by using a single storage device. .

[Brief description of drawings]

FIG. 1 is an overall perspective view of a grain drying device according to an embodiment of the present invention, FIG. 2 is a schematic sectional view of the grain drying device, FIG. 3 is a configuration diagram of a control circuit, and FIG. 4 is a flow chart showing a control routine. Is. 10: Grain dryer, 40: Memory, 44: Central processing unit (CPU), 52: DIP switch.

Claims (1)

[Claims] 1. A storage unit that stores a program capable of controlling different drying processes for each model, a determination unit that determines the model, and a drying process according to the model determined based on the program stored in the storage unit. A grain drying apparatus comprising: setting means for setting a processing program; and control means for automatically performing drying control according to the set drying processing program.