JP2000018827A - Grain drying and conditioning facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure best automatic operation while reducing the cost by coupling the exhaust duct of a dryer with an exhaust fan and the sorting duct of a wind sorting machine and supplying exhaust air to a dryer or the wind sorting machine through switching control of each shutter of the exhaust duct and the sorting duct thereby employing suction fans of single specification. SOLUTION: The dryer 3 comprises a furnace 17 disposed on one side of the body and an exhaust fan 18 disposed on the other side. The exhaust fan 18 is disposed at the outlet part of an exhaust duct 19 and a shutter 20 is provided at the inlet part thereof. Suction air of a wind sorting machine at a cleaning section is used by the exhaust fan 18. More specifically, a selection duct 21 is coupled with the exhaust duct 19 on the downstream side of the shutter 20 and a shutter 22 is disposed in the vicinity of joint to the exhaust duct 19. A fan duct 18a constituting the exhaust fan 18 is coupled with a dust collecting chamber. The shutters 20, 22 couple forward and reverse motors 20a, 22a with an open/close shaft section and performs interlocked control based on an operating signal from a central control board 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a facility for preparing and drying cereals.

[0002]

2. Description of the Related Art Conventionally, a drying apparatus for drying a grain is formed by connecting a suction fan to an exhaust side because ventilation is performed by ventilation. On the other hand, in each facility, there is a step of performing a dust removal treatment through a wind separator at a stage prior to the selective treatment of the dried grain. As described above, the same facility may require blast in different steps, and an object of the present invention is to reduce the cost of equipment by sharing the blast source.

[0003]

Therefore, the present invention has taken the following technical means. That is, an exhaust fan is connected to an exhaust duct of a drying device for drying grain, and a sorting duct of a wind separator provided for a fine selection process is connected to the exhaust duct, and the exhaust duct and the sorting duct are connected to the exhaust duct and the sorting duct. Are each provided with an opening / closing shutter, and are configured to switch and control these opening / closing shutters based on an operation command such as a drying operation or a selection operation, and to selectively supply wind generated by an exhaust fan to a drying device or an air selection device. It becomes.

[0004] In addition, when a sorting machine operation command signal of a selection unit or the like is output during the drying operation, the presence or absence of stuffiness when the drying operation of the dried grain is interrupted is predicted and determined. On the basis of the determination result, the drying operation is continued or the drying operation is interrupted to switch to the sorter operation.

[0005]

Operation and effect of the present invention With the above configuration,
It is sufficient to set a single specification for the suction fan, which has been conventionally provided independently, and the cost of equipment can be reduced. In addition, when there is a simultaneous operation request from either the drying operation or the selection unit operation, while predicting the occurrence of stuffiness, determine whether to suspend the drying operation and respond while determining which operation has priority. Therefore, the best driving situation can be obtained automatically without confirming the intention of the operator.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an outline of the facility, which includes a receiving section 1, a temporary storage section 2, a drying apparatus 3, storage silos 4, 4,..., A selection section 5, a preparation section 6, a shipping section 7, and the like. Among them, the receiving section 1 is a roughing machine 1 for receiving the grains received from the receiving conveyor 10.
1, a weighing machine 12 and the like. The temporary storage unit 2 is provided with a plurality of storage bins 12, 12,.
This is a configuration that can be temporarily dried to about 8%. The temporarily dried cereal is dried while flowing down the drying device 3, and is then temporarily stored in a tempering silo 13 formed between a plurality of storage silos 4 and reconditioned. Dried grains are
Are stored and stored in a plurality of storage silos 4, 4,. The screening unit 5 removes degranulation before transferring the silo storage grains to the preparation unit 6, that is, the processing step by the hulling sorter 14, and includes a wind separator 15, a selector 16, and the like. The shipping section 7 has a configuration in which the grain subjected to the hulling sorting processing is whitened, packed in bags, and shipped.

The drying device 3 is configured to supply hot air to the continuously flowing grains to dry the grains. A furnace 17 is provided on one side of the apparatus main body, and an exhaust fan 18 is connected to the other side. The exhaust fan 18 is provided at an outlet of an exhaust duct 19 connected to the apparatus main body to collect the exhaust air.
An opening / closing shutter 20 is provided at the entrance. On the other hand, the wind separator 15 of the selection unit 5 is configured to apply suction air to the falling grain to separate and remove the pity contained therein, and to use the suction air as the exhaust fan 18. That is,
A sorting duct 21 is connected to the middle of the air discharge duct 19 on the lower side of the position of the opening / closing shutter 20. An opening / closing shutter 22 is provided in the vicinity of the connection between the sorting duct 21 and the exhaust duct 19. The suction air acting on the wind separator 15 via the sorting duct 21 sucks dust and is discharged through the duct 21.

The fan duct 1 constituting the exhaust fan 18
8a is connected to a dust collection chamber not shown. The opening / closing shutters 20 and 22 are provided with forward / reverse rotation motors 20a and 22a on the opening / closing shafts, respectively, and are configured to be opened / closed in conjunction with the drying device operation signal and the selection unit operation signal from the central control panel 23. That is, while the drying device operation signal is being output, the shutter 20 is controlled to be “open” and the shutter 22 is controlled to be “closed”. On the other hand, during the output of the selection section operation signal,
0 is controlled in conjunction with “closed” and shutter 22 is “opened”.

When the operation output of the selection section is output during the output of the drying operation, the following control is executed based on the determination of the stuffiness. That is, the drying operation state is read, and it is determined whether or not the moisture value is equal to or less than a predetermined value. When the moisture value is equal to or more than the predetermined value, the danger of stuffiness is large, the execution of the drying operation is continued, and the output of the selective unit operation output stop is output. Is output to the display unit 24. At this time, when the moisture value is equal to or less than the predetermined value, the allowable interruption time predetermined for each moisture value is displayed, and the operation is switched from the drying operation to the selection unit operation until the interruption time elapses. That is, it is determined that the occurrence of stuffiness is small during the above-mentioned predetermined time, and the opening / closing state of the opening / closing shutter is also changed from the drying operation state to the shutter 20 “closed”
The operation is switched to the selective operation of the shutter 22 “open”. The above operation is automatically performed by the central control panel 23 by judging whether or not the humid condition is reached. When the operation status is forcibly switched, a special manual operation switch (not shown) is operated to operate each operation. A shutter open / closed state according to the operation can be obtained.

In the above case, the determination of the stuffiness was made based on the moisture value, that is, whether or not the operation was switched to the selection unit operation. However, the stuffiness of the grain was determined in consideration of the temperature of the hot air to be supplied and the rate of drying loss. May be. The same applies to a case where the wind separator 15 alone output is output instead of the fine selection unit operation output. Such a mode in which only the wind selection process is performed without the fine selection process is often used for, for example, rice and rice used by farmers.

FIG. 4 shows a case in which the sorting machine for the receiving unit 1 and the screening unit 5 is used as a common sorting machine 25 to reduce the cost. The configuration of the flow rate adjusting tank 26 provided at the preceding stage is as follows. It is. The tank 26 is provided with a full leveler, and when the full leveler operates, the supply conveyor is controlled to stop so as to stop supplying the grain to the tank 26. By the way, the flow rate adjusting tank 26 in this embodiment includes a full sensor 27,
28 are arranged. When used as a rough sorting machine in the load receiving unit 1, the shutter 30 of the load receiving hopper 29 is closed with the operation of the full capacity sensor 27, and the supply conveyor 31 and the elevator 32 are controlled to stop. On the other hand, when it is used as a selection machine of the selection unit 5, the shutter 33 of the storage silo 4 is closed by the operation of the slightly full position sensor 28,
In this configuration, the supply conveyor 34 and the elevator 35 are stopped. Since the supply path as the fine-selection machine is longer than the supply path as the rough-selection machine, the above-described configuration enables the stop control in consideration of the length of the supply path.
In other words, the grain discharged from the silo 4 to be supplied to the selection unit 5 does not stay in the middle of the transport path, and all the grain once discharged from the silo 4 can be collected in the flow rate adjusting tank 36. Therefore, the full sensor 27
And 28 is the capacity considering the transport route to the selection machine. In the above case, the sorting machine 2 is located near the receiving unit 1.
5 has been described. On the contrary, in a facility where the sorting machine 25 is arranged close to the selection section 5, when the full sensor 27 is used as a selection machine, the full sensor 28 is used as a coarse selection machine. It is set to work when used as.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a main part.

[Figure 2] Facility outline

FIG. 3 is a flowchart.

FIG. 4 is a schematic diagram of another facility.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Receiving part, 2 ... Temporary storage part, 3 ... Drying device, 4 ... Storage silo, 5 ... Selection part, 6 ... Preparation part, 7 ... Shipping part, 9 ... Receiving conveyor, 10 ... Rough selection machine, 11 ... Weighing Machine, 12: storage bin, 13: tempering silo, 14: hulling sorter,
15: dust remover, 16: selected machine, 17: furnace, 18: exhaust fan, 19: exhaust duct, 20: open / close shutter, 21
... Selection duct, 22 ... Open / close shutter, 23 ... Central control panel, 24 ... Display

Claims (2)

[Claims] An exhaust fan is connected to an exhaust duct of a drying device for drying grain, and a sorting duct of a wind separator provided for a fine selection process is connected to the exhaust duct. Each sorting duct has an open / close shutter,
A grain drying preparation facility configured to switch and control these open / close shutters based on an operation command such as a drying operation or a selection operation to selectively supply the blast generated by an exhaust fan to a drying device or an air selector. 2. When a sorting machine operation command signal of a selection unit or the like is output during the drying operation, the presence / absence of stuffiness when the drying operation of the dried grain is interrupted is predicted and determined. 2. The grain drying preparation facility according to claim 1, further comprising a control device that switches the drying operation based on the determination result to continue the drying operation or to interrupt the drying operation and shift to the sorter operation.