JP3032714B2 - Drive control method in shutter for switching between grain circulation and grain discharge of grain dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain dryer for drying a grain harvested by a harvester such as a combine in a field to a predetermined moisture value. The present invention relates to an improvement in a drive control method of a shutter operation for switching a grain circulation path to a grain discharge step communicating with a discharge gutter at the end of a drying step performed while circulating and flowing by a conveying device.

[0002]

2. Description of the Related Art As shown in FIG. 1, a grain dryer A of the above-described type is usually a machine body 1 assembled in a vertically high box shape.
A storage section for storing grains to be dried is formed on the upper half side of the inside of the body, and a drying section for allowing the grains to be subjected to dry air (hot air) is formed on the lower half side. Establishes the elevating machine 2 and connects the bottom of the lifting tower 20 to the end of the lower conveyor 10 in the transport direction, which is laid on the bottom of the body 1,
As shown in FIG. 2, the discharge cylinder 21 at the upper part of the lifting tower 20 communicates with the starting end in the transport direction of the upper conveyor 11 laid on the top of the body 1, and as shown in FIG. An opening 12 is opened in the floor surface of the conveying gutter 111 on the lower surface side of the screw 110 of the upper conveyor 11, and a shutter 3 is provided on the lower surface side thereof, which rotates about the operating shaft 30 to open and close the opening 12. An output shaft of a motor M for driving a shutter is transmitted to an operating shaft 30 of the above, and a grain outlet 22 is provided at the bottom of a discharge cylinder 21 located below the shutter 3, and an outlet gutter 4 is provided there. Are connected and communicated.

[0003] When performing the drying operation of the grain,
With the shutter 3 rotated to the closed position by the operation of the motor M, the opening 13 provided on the side surface of the body 1 so as to be openable and closable is opened, and the grain to be dried is removed therefrom. The lower conveyor 10 at the bottom of the fuselage 1 is poured into the lower conveyor 10, and the lower conveyor 10 and the bucket conveyor 23 in the lifting tower 20 of the elevator 2 are moved toward the top of the fuselage 1. By the operation of 11, it sticks into the storage section in the body 1.

[0004] With this, when a predetermined amount of inflation is completed, the lower conveyor 10, the elevator 2, the upper conveyor 1
In the state where 1 and the like are operated, the drum shutter provided at the lower part of the drying unit is operated to circulate the kernels stuck in the storage unit so as to flow through the drying unit and return to the storage unit again. Hot air generator 5 which is made to flow and at the same time consists of a burner device
Then, the blower 6 is operated to supply hot air to the drying section, and the grain is subjected to hot air in the drying section to be dried.

[0005] When the drying process to a predetermined moisture value is completed, the operation of the hot air generator 5 is stopped, the supply of hot air to the drying unit is stopped, the shutter 3 is opened, and the elevator 2 lifts the hot air. The grains to be sent are taken out of the machine from the ejection gutter 4.

When the removal of the grains is completed, the shutter 3 is rotated to the closing position, and then, when the grains are stretched into the machine body 1 and dried, the grains are moved out of the machine. Keep out of spill.

[0007]

The above-mentioned grain dryer A
Performs the operation of moving the shutter 3 that switches between the state in which the grains in the body 1 are circulated and fluidized and the state in which the grains are discharged outside the machine when the grain discharging operation is completed, to the closed position. When the grains to be dried are put into the machine body 1 and circulated and flowed, the grains are used so as not to cause a situation in which the grains are discharged out of the take-out gutter 4 and scattered around. However, even if the user forgets to move the shutter 3 to the closed position when the discharge operation is completed, the next time the drying operation is performed, or the discharge operation is interrupted and the grains are circulated and flown. In order to prevent the grains from being discharged outside the machine, when the discharge operation is completed and the operation of the grain conveying device such as the lower conveyor 10 and the elevator 2 is stopped, the operation is linked to the operation. Then, the motor M that drives the shutter 3 Yatta 3 leave controlled to operate to move the closure side, the shutter 3 at the same time by closing the discharging working medium to perform closing operation has been performed.

However, even if the operation of the shutter 3 is controlled in this way, when the grain is dried next time, or when the discharge operation is interrupted and the grain is circulated, a part of the grain may be removed. There is a problem that a situation occurs in which the water flows out of the machine through the takeout gutter 4 and becomes scattered.

According to the present invention, even when the switching shutter 3 is moved to the closed position, when the grains are circulated, a part of the grains is taken out of the machine body 1 through the discharge gutter 4. This was done in order to solve the problem of becoming leaky, which eliminates the incomplete closing operation of the shutter 3 which causes this problem, and the closing operation of the shutter 3 completely closes the opening 12. It is an object to provide a new means for setting a state.

[0010]

SUMMARY OF THE INVENTION The present invention has been made on the basis of findings obtained through various studies for the above-mentioned objects.

That is, the above-mentioned shutter 3 for alternately switching between the two states of the grain circulation and the grain discharge is provided with the opening 1
The phenomenon in which a part of the grains are scattered out of the take-out gutter 4 when the grains are circulated and flown even when the grains 2 are moved to the closing position has caused the shutter 3 to be closed. At this time, the grains G remaining in the transport gutter 111 of the upper conveyor 11 are interposed between the upper surface of the shutter 3 and the lower surface of the transport gutter 111 as shown in FIG.
Does not reach the point where the opening 12 on the floor surface of the conveying gutter 111 is completely closed, and a state is created in which a gap is generated in the opening 12. When the grains are circulated, the grains flow through the gap. It was found that this occurred due to excessive flow to the discharge gutter 4.

The incomplete closing operation of the shutter 3 that causes this phenomenon is caused by opening and closing the shutter 3 at a short interval when the closing operation of the shutter 3 is completed when the grain discharging operation is completed. Is repeated several times, the upper surface of the shutter 3 and the transport gutter 111 of the upper conveyor 11
Between the lower surface of the garment and the absence of kernels there, and after this state,
By performing a predetermined closing operation on the shutter 3, the operation is completely performed without opening of the opening 12 without being hindered by the grain.
Has been found to be closed.

In view of the above, in the present invention, as means for achieving the above-mentioned object, as a means for switching between a state in which the grains stuck in the machine body 1 are circulated and fluidized and a state in which the grains are discharged outside the machine, When the operation of the shutter 3 of the granule dryer A is operated to the closing side by the drive of the motor M that is opened and closed, the closing operation is performed after repeating the opening and closing operation several times. And a drive control method of a switching shutter in the grain dryer.

[0014]

According to the means of the present invention having the above-described structure, the operation of discharging the grains stuck in the machine body 1 to the outside of the machine is completed, and the conveying device for conveying the grains such as the lower conveyor 10 and the elevator 2 is stopped. When the shutter 3 for switching the operation between the grain circulation and the grain discharge is operated in a closed state in conjunction with the operation of
Alternatively, when the shutter 3 is operated to move to the closing side by a single switch operation without interlocking with the operation of stopping the transport device, the shutter 3 opens and closes several times, and the shutter 3 After cleaning the space between the upper surface of the transfer gutter and the lower surface of the transfer gutter 111 of the upper conveyor 11, the transfer gutter 11 moves to the closed position.
The closing operation of the shutter 3 is performed in a state where there is no grain around the opening 12 on the floor surface 1 and the upper surface of the shutter 3, and the opening 12 is closed by the shutter 3 without creating a gap in the opening 12. Can be obtained.

[0015]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 4 is an overall perspective view of a grain dryer A embodying the present invention, and FIG. 5 is a vertical sectional side view of a main part of the grain dryer A. In FIG. An upper conveyor 2 is mounted on the front of the body 1 (right side in the figure).

As shown in FIG. 4, the grain dryer A has a storage section for storing grains to be dried in the upper half of the machine body 1 in a vertically high box shape. On the side, a drying section is formed in which the drying air (hot air) generated by the burner device 5 can be bathed on the grains, and below the drying section, the grains in the storage section flow down through the drying section and descend. A rotary shutter is provided, a lower conveyor 10 is provided at the bottom of the fuselage 1, and an elevator 2 communicating with the terminal end of the transport direction thereof is erected on the front of the fuselage 1.
It is of a normal form constituted by connecting and communicating the starting end of the upper conveyor 11 mounted on the top of the body 1 to the discharge cylinder 21 at the upper end thereof, and the front side of the body 1 has As shown in FIG. 4, a control box 7 is provided.

On the front of the control box 7, there is provided a screen display a for displaying characters, numerals and pictures on a display screen composed of a liquid crystal panel, and touch switches arranged in a matrix on the display screen. By the operation of S ..., the above-mentioned lower conveyor 10, upper conveyor 11,
The operation of each operating section such as the elevator 2 is controlled.

The display screen appearing on the screen display a is sequentially switched to a different screen.
In the screen shown in FIG.
Each of the switches S... For drying and discharging is displayed, and by selecting and touching the switches, each operating section is operated so as to adapt to the selected work.

The elevator 2 erected on the front of the body 1 stores a bucket conveyor 23 inside the tower 20, and discharges the grains to be pumped to the discharge cylinder 21 at the top of the tower 20. The starting end side of the upper conveyor 11 protrudes into the discharge cylinder portion 21, and inherits the grains discharged from the bucket 230 of the bucket conveyor 23 and conveys the grains to the storage section in the machine body 1. It is like that.

Further, the discharge cylinder 21 has an outlet 22 opened to the outside at the bottom located below the starting end of the upper conveyor 11, and the outlet gutter 4 is provided at the outlet 22. Connected.

An opening 12 opening toward the outlet 22 is provided on the floor surface of the starting end of the conveying gutter 111 of the upper conveyor 11 which protrudes into the discharge cylinder portion 21. An operating shaft 30 is provided between the above-described outlet 22 and the outlet 22.
A shutter 3 that pivots about the center to open and close the opening 12 is provided, and the shutter 3 rotates and opens and closes the opening 12 by the operation of a motor M that transmits an output shaft to an operating shaft 30 thereof. As a result, the grains discharged from the bucket conveyor 23 into the discharge cylinder portion 21 are separated by the upper conveyor 1.
1 and the state of the circulation of the grains which are fed into the machine body 1 and fed into the machine body 1 and flow out to the outlet 22 from the opening 12 on the floor surface of the conveying gutter 111 at the start end of the upper conveyor 11 to be taken out of the machine. The state is switched to the state of the discharged grain.

The operation of the motor M for driving the opening and closing of the shutter 3 is controlled by a controller in the control box 7 provided on the front side of the body 1 so that the shutter 3 is closed. At this time, it is controlled so that the closing operation is performed after repeating the opening and closing operation several times.

In this embodiment, however, the aforementioned airframe 1
Of the time switches S... Appearing on the screen of the screen display a on the front of the control box 7 provided on the front side of.
When the discharge operation for taking out the grains in the machine body 1 outside the machine is performed, the motor M is driven in a direction for rotating the shutter 3 to the open side in conjunction with the operation, and the shutter 3 is moved to the open side. When the discharge switch S is turned off at the end of the discharge operation to stop the operation of each of the operating units of the transfer device for transferring the grain, the motor M starts the shutter 3. Is driven in a direction to rotate the shutter 3 to the closing side to close the shutter 3 and thereafter to maintain the shutter at the state, but when the discharging operation is completed, the motor that rotates the shutter 3 to the closing position is used. The operation of M is performed by causing its drive circuit to perform, for example, open rotation at intervals of about several seconds to 10 seconds after closing rotation, and thereafter perform closing rotation at intervals of about 5 seconds. Keep in providing a control circuit for the Migihitsuji, thereby, are controlled to move to a closed position is repeated several times to open and close operation.

[0025]

According to the means of the present invention constructed as described above, the conveying device for conveying the grains such as the lower conveyor 10 and the elevator 2 after finishing the operation of discharging the grains stuck in the machine body 1 to the outside of the machine. When the shutter 3 for switching the operation between the grain circulation and the grain discharge is closed in conjunction with the operation for stopping the operation, or a single switch is operated without interlocking with the operation for stopping the transport device. When the shutter 3 was operated to move to the closing side by the operation, the shutter 3 opened and closed several times, and the space between the upper surface of the shutter 3 and the lower surface of the transport gutter 111 of the upper conveyor 11 was cleaned. Later it will move to the closed position,
The closing operation of the shutter 3 is performed in a state where there is no grain around the opening 12 on the floor surface 1 and the upper surface of the shutter 3, and the opening 12 is closed by the shutter 3 without creating a gap in the opening 12. Can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional grain dryer.

FIG. 2 is a vertical sectional side view of a switching shutter portion of the grain dryer.

FIG. 3 is an explanatory diagram of an operation of a switching shutter of the grain dryer.

FIG. 4 is an overall perspective view of a grain dryer used for implementing the means of the present invention.

FIG. 5 is a vertical sectional side view of a main part of the grain dryer.

[Explanation of symbols]

A: grain dryer, a: screen display, G: grain, S: switch, M: motor, m: output shaft, 1: body, 10: lower conveyor, 11: upper conveyor, 110: screw, 111 ... Conveyance gutter, 12 ... Opening, 13 ... Entrance, 2 ...
Elevator, 20 ... Heating tower, 21 ... Discharge cylinder, 22 ... Outlet, 23 ... Bucket conveyor, 230 ... Bucket, 24
... Outlet, 3 ... Shutter, 30 ... Operation axis, 4 ... Outlet gutter, 5 ... Hot air generator, 6 ... Blower, 7 ... Control box.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-318263 (JP, A) JP-A-6-69683 (JP, U) JP-A-5-17486 (JP, U) JP-A-61-1 58496 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F26B 17/14

Claims (1)

(57) [Claims] 1. A shutter 3 for switching between a state in which grains embedded in a machine body 1 are circulated and flowed and a state in which grains are discharged outside the machine body.
Is controlled so that the closing operation is performed after repeating the opening and closing operation several times when the shutter is operated to the closing side by driving the motor M for opening and closing operation of the shutter 3. Drive control method in shutter for switching between grain circulation and grain discharge of machine.