JPH0699087A - Dry grain discharge control device in grain drying device - Google Patents

Abstract

PURPOSE:To adequately maintain the amt. of grains in the supply hopper of a rice hulling machine in the case of execution of a rice hulling operation while receiving the grain supply from a drying device. CONSTITUTION:The rice hulling operation is executed while the grains are supplied from the discharge section of the grain drying device B to the supply hopper 46 of the rice hulling machine. The supply hopper is provided with a detecting means 47 for detecting the amt. of the grains in the hopper. A control section controls the discharge rate by making fuzzy inference with the detected amt. of the grains and the change rate thereof as input data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry grain discharge control device in a grain drying device.

[0002]

2. Description of the Related Art When discharging a grain from a grain drying device to a grain preparing device such as a grain huller, an upper limit sensor and a lower limit sensor are provided in a supply hopper of the grain huller, and an upper limit sensor is provided. If you want to exceed the limit, suspend the discharge from the drying device, and if it falls below the lower limit sensor, restart the discharge from the drying device and secure the grain amount so as not to interfere with the post-work such as the huller. There is.

However, since the above-described embodiment does not cope with a change in efficiency of post-work such as a hulling machine, when the efficiency becomes extremely high, the grain discharge from the drying device cannot be caught up and the hulling work is interrupted. Sometimes came.

[0004]

In order to solve the above-mentioned drawbacks, the present invention connects the discharge part of the grain drying device B and the supply hopper 46 of the rice hull preparation device, and discharges the amount of grain from this discharge part. And a grain amount detecting means 47 for detecting the grain amount in the supply hopper 46, and a grain amount H in the supply hopper.
The dry grain discharge control device in the grain drying device is provided with means for detecting the increase / decrease amount dH of the grain in the supply hopper and adjusting the discharge amount according to the fuzzy reasoning based on both detected values.

[0005]

The function of the present invention is to control the amount of grains discharged from the dryer by monitoring the amount of grains in the supply hopper 46 and performing fuzzy inference using these data as input values while also calculating the amount of change. Therefore, even if there is a change in work efficiency in the work of the huller, the change in work efficiency will be followed to reduce the extreme decrease in grain amount and solve the above-mentioned drawbacks.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a grain drying / preparation apparatus, in which a grain cargo receiving pit A, a plurality of grain drying apparatuses B, B ... Are arranged in the vicinity of the pit A, and then a sliding apparatus C, a weighing apparatus D, and the like. In addition, an elevator or the like for transferring and supplying grains is arranged between the respective devices.

Of these, four grain drying devices B, B ... Are provided in the example shown in FIG. That is, from the grain drying section 4 in which the storage section 1, the aeration drying section 2 and the grain collecting section 3 are vertically stacked, and the cooling tank 5 mounted on the upper part of the grain drying section 4 machine frame. , And these are formed in a vertically long rectangular parallelepiped shape. Of these, the aeration / drying section 2 of the grain drying section 4 sandwiches the four tank grain flow-down passages 6, 6 ... ... are formed, and the air sucked and ventilated by the suction fan 9 is hot-aired by the burner 10 and the grain flow passages 6, 6 ...
The hot air is applied to the grains flowing down. Reference numerals 11, 11 ... Denote valves provided at the lower portions of the grain flow-down passages 6, 6 ... to gradually flow down the grain.

A horizontal transfer gutter 13 provided with a transfer spiral 12 is provided at the lower part of the grain collecting section 3 which receives the fed grains from the respective feeding valves 11, 11 ... The elevator is connected to the elevator 15 from the 14th section. The elevator 15 is located on the rear side of the machine frame between the grain drying section 4 and the cooling tank 5 and is erected at a height slightly higher than that of the cooling tank 5. A mode in which an endless belt having buckets attached at predetermined intervals is wound between the upper and lower pulleys inside the elevator 15, and the grain or the like from the above-mentioned mating port 14 can be scooped up and thrown toward the throwing port 16 at the upper part thereof. I am trying.

A switching valve 17 is provided at the outlet 16 portion.
And is configured to be selectively supplied to the first opening portion a and the second opening portion b in accordance with the switching operation thereof. In addition, the first opening portion (i) has a discharge side end in front of the connecting pipe 18 connected to the beginning end side of the circulation transfer gutter 20 including the transfer spiral 19 in front of and behind the ceiling part of the storage part 1. On the other hand, the second opening b is to be seen on the starting end side of the cold-cooling transfer trough 22 with the built-in transfer spiral 21 arranged in the same shape on the ceiling of the cold-cooling tank 5.

The above-mentioned transfer spiral 19 gutter 20 and transfer spiral 2
One gutter 22 is extended to the central upper position of each tank part and can be supplied to the surface of the rotary diffuser 23 or 24. The cooling tank 5 has a cooling section 25 having substantially the same capacity as the storage section 1 of the grain drying section 4, and a cooling tank 25 having a V-shaped cross section under the cooling section 25. The transfer spirals 28, 28, which are formed in a vertical direction and are discharged in order to horizontally transfer the collected grain, are installed.

A bottom valve 30 is provided at the bottom of each discharge transfer gutter 26, and the bottom can be opened by appropriately rotating the bottom valve around a fulcrum. Along with the switching operation of the bottom valve 30, grains are allowed to flow into the storage section 1 on the grain drying section 4 side through the open ceiling c of the grain drying section 4. Also, the transfer end side of each of the discharge transfer spirals 28, 28 is projected to the outside of the machine frame, and the projecting part is received by each of the connecting troughs 31, 31 attached to the outer surface of the machine frame. (Not shown), it is configured to be supplied to the discharge conveyor 34 in the form of a belt conveyor through the flow-down guide cylinders 33, 33.

The supply start end side of the circulation transfer gutter 20 is located outside the machine frame, and a hopper 32 is provided below the connecting pipe 18 so that the hopper 32 can be seen, and the transfer gutter is provided just below the connecting portion of the hopper 32. A discharge port is formed on the lower side of 20 and is configured to be opened / closed by an open / close valve (not shown), and a guide tube portion 35 is connected. The circulation transfer gutter 20 is located between the left and right discharge transfer gutters 26 and 26, and the guide cylinder portions 33,
33 and 35 are placed side by side on the left and right, and the discharge conveyor 3
4 is provided along the transfer direction.

The discharge conveyor 34 is provided in a state where left and right grain drying devices B ₁ , B ₂ ... Are connected to the left and right, and is provided in the space between the rear side of each device frame and the elevator 15. It is provided so as to be positioned and appropriately supported and attached to the machine frame and the frame of the elevator 15. Reference numeral 39 denotes a stretch conveyor provided in parallel below the discharge conveyor 34, which is in the form of a flight conveyor or a belt conveyor, and the box form part thereof is supported and fixed to the box form part of the discharge conveyor 34. The stake-in conveyor 39 is configured so as to be interlocked with the forward and reverse directions. An opening (not shown) is provided in the middle of the stake conveyor 39, and opening / closing valves 40, 40 ... Are arranged in these openings, and a plurality of grain drying devices B ₁ , B ₂ ... Individual elevators 15 are provided. Are connected to the guide tubes 41, 41 ...

Reference numeral 42 is a detection switch provided corresponding to the open position of each of the on-off valves 40, and 43 is a detection switch similarly provided corresponding to the closed position. Upon receiving a command signal from the central control panel (not shown), the grains are loaded into the designated drying device. At that time, the opening / closing valve 40 corresponding to the designated drying device is opened, and the detection switch 42 is turned on. However, when the stake-in operation is not performed, that is, when the stake-in command signal is not output from the central control panel, if any of the detection switches 42 provided side by side is turned on, a limiting mechanism for limiting the stake-in operation is provided. is there.

The elevator 44 from the pit A is provided so that grain can be supplied to the stretch conveyor 39, and the dried grain from the discharge conveyor 34 is passed through the elevator 45 to the hulling device C.
Are fed to the feeding hopper 46 of the above. The hulling device C has a known form, and includes a removing unit, a hulled brown rice sorting unit, and the like. A brown rice sorting / measuring device E is arranged on the brown rice outlet side of the paddy brown rice sorting section to bag the finished brown rice from which the scrap rice has been removed in predetermined weights.

The supply hopper 46 is provided with an ultrasonic type storage amount detecting sensor 47. Now, the control unit 48 of the grain drying device B and the control unit 49 of the grain hulling device D are communicated with each other through a communication means, and the control unit 48 is provided with, for example, a discharge motor 50 that rotationally interlocks the discharge transfer spirals 28, 28. The drive speed is controllably connected. The storage amount detection sensor 47 is connected to the control unit 49.

The control unit 49 performs fuzzy inference based on the input data of the grain amount H in the supply hopper 46 and the change amount dH thereof based on the detection result of the storage amount detection sensor 47 to secure an appropriate amount in the supply hopper 46. This is a configuration for controlling the rotation speed N of the discharge motor 50 at high and low speeds. It is determined which of PB, PS, ZR, NS, and NB contains the value of the grain amount H in the supply hopper 46 and the change amount dH thereof at every predetermined time, and the discharge motor is determined according to the fuzzy rule (FIG. 6). A fuzzy variable corresponding to a rotational speed N of 50 is shown.
That is, two variables H and dH are used as antecedent variables of fuzzy control, and N is an antecedent variable. If one example of the fuzzy rule is given, IF H = PS AND dH = NS THEN N = ZR "When the grain amount H is slightly large and the grain change amount dH is slowly decreasing, the discharge motor 50 does not rotate."

The membership function (FIGS. 7, 8 and 9) for inferring the fitness of the input data and the fuzzy variables is assumed, and the actual rotation speed N of the discharge motor 50 is calculated.
Now, if the inputs H and dH are H ′ and dH ′, respectively, the grade for H ′ = ZR is G ₁ , H ′ = NS.
Is G ₂ , the grade for dH ′ = ZR is G ₃ , and the grade for dH ′ = PS is G ₄ , so that G ₄ <G ₂ <G ₁ <G ₃ (<1).

In the above case, among the above fuzzy rules, IF H = ZR AND dH = ZR THEN N = ZR ... (1) IF H = ZR AND dH = PS THEN N = NS ... (2) IF H = NS AND dH = ZR THEN N = PS ... (3) IF H = NS AND dH = PS THEN N = ZR ... (4) is applied, and G ₁ <G ₃ is satisfied in the above rule (1), but this grade G _{In the case of 1} , the fuzzy variables related to the rotation speed N as the consequent part are weighted as shown by the hatched line α in the figure. Similarly, in rule (2), G ₄ <G ₁ , and therefore β
In the rule (3), G ₂ <G ₃ , and therefore γ in the figure, and in the rule (4), G ₄ <G ₂ and δ in the figure. In this way, the final number of revolutions N'is obtained by superposing the four sets obtained by weighting the consequent part fuzzy sets of the fuzzy rules and obtaining the center of gravity of the four sets.

The squeeze operation switch 33 of the drying section 4 is turned on.
When N, the raw grain is supplied from the outside drawing conveyor, and then is fed into the drying unit 4 via the elevator 14. When the feeding is completed, the drying operation is started. Repeated hot air drying by burner combustion and tempering in the reservoir 1,
When the moisture value detected momentarily matches the finishing moisture value, the drying is completed. The dried grains are transferred to the cooling tank 5 side,
Grain temperature is reduced. In addition, ventilation operation processing can be performed as needed.

Grains whose grain temperature has been sufficiently lowered in the cooling tank 5 are supplied to the surface of the discharge conveyor 34 which is driven at a constant speed in advance by the rotation of the discharge transfer spirals 28, 28, and the grain of the hulling device D is fed. It is guided and supplied to the supply hopper 46.
The rotation speed N of the discharge transfer spirals 28, 28 is controlled as follows. That is, the supply hopper 46 is detected by the detection sensor 47.
The grain amount H in the inside is detected (step 10), and the variation amount dH of the grain amount is calculated by comparison with the previous detection value (step 20). Next, the number of revolutions N'of the motor 50 that drives the discharge transfer spirals 28, 28 of the drying device is calculated by fuzzy reasoning, and the adjustment amount to the present number of revolutions N'is obtained (step 30). A command to send this adjustment amount data to the drying device side controller 48 is issued (step 40). The number of revolutions of the discharge motor 50 is controlled so as to reach the set number of revolutions N '(step 50).

[Brief description of drawings]

FIG. 1 is an overall front view with a partial cross section.

FIG. 2 is a front view of a grain dryer.

FIG. 3 is a side view of the grain dryer.

FIG. 4 is an exploded perspective view of a part of the grain dryer.

FIG. 5 is a control block diagram.

FIG. 6 is a diagram showing a fuzzy rule.

FIG. 7 is a graph showing a membership function.

FIG. 8 is a graph showing a membership function.

FIG. 9 is a graph showing a membership function.

FIG. 10 is a flowchart.

[Explanation of symbols]

A Grain receiving pits B, B ... Grain drying device C Sliding device 4 Grain drying unit 5 Cooling tank 26 Discharge transfer gutter 28 Transfer spiral 34 Discharge conveyor 45 Elevator 46 Feed hopper 47 Grain amount detection means 48 Control unit 49 Control unit 50 Discharge motor

Claims (1)

[Claims] 1. A discharge unit of a grain drying device B and a supply hopper 46 of a rice hull preparation device are connected to each other, and discharge amount adjusting means for adjusting the amount of grain discharge from this discharge unit to increase or decrease is provided. Grain amount detecting means 4 for detecting the amount of grain in 46
7, the amount of grains H in the supply hopper and the amount dH of increase / decrease of grains in the supply hopper are detected, and a means for adjusting the amount of discharge according to fuzzy reasoning from the detected values is used for drying in the grain drying apparatus. Grain emission control device.