JP2012035936A - Grain conveying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem wherein an air nozzle is provided only on the grain conveyance starting end side in the prior art, thereby requiring to powerfully blow a large amount of air, and positive eliminating action cannot be expected with a small amount of air.SOLUTION: A lateral feed type conveying spiral (12) is mounted in a grain conveying chute (11), and a plurality of air nozzles (15N1), (15N2), (15N3) are provided at a plurality of parts from the conveyance upper side to the lower side of a conveying path to blast air from the plurality of parts.

Description

  The present invention relates to a grain transport device that transports grain using a transport spiral in a transport basket, and is used in a harvester, a dryer, a huller, and the like.

  Patent Document 1 discloses a technique including a residual grain removing unit that blows air into a conveying basket to remove grains remaining on the bottom of the spiral.

JP 2008-55279 A

  In the prior art, since the air nozzle is provided only on the grain conveying start end side, it is necessary to blow a large amount of air strongly, and there is a problem that a reliable removal action cannot be expected with a small amount of air.

In order to solve the above problems, the present invention has taken the following technical means.
That is, according to the present invention, a laterally-feed type transport spiral (12) is provided inside a grain transport basket (11), and a plurality of air nozzles (15N1), (15N2), (15N3) are transported through a transport path. It is characterized in that it is provided at a plurality of locations from the upper transport side to the lower transport side, and air is blown from the plurality of locations.

  According to the said structure, the grain thrown in in the conveyance basket | stuck (11) from the receiving port (13) is conveyed toward the terminal end side from the start end side by the rotating transport spiral (12), and is from the terminal exit (14). Discharged.

  When removing the grains remaining on the bottom of the transport basket (11), air is supplied from a plurality of air nozzles (15N1), (15N2), (15N3) provided at a plurality of locations from the upper side to the lower side of the transport path. Residual grain is removed by spraying and blowing air to the bottom of the conveying basket.

In short, since air is blown into the transport path from a plurality of places, residual grains can be reliably removed with a small amount of air.
According to a second aspect of the present invention, in the first aspect, a concave portion (16) is provided at the bottom of the conveying rod (11), and air nozzles (15N2), (15N3) are provided in the concave portion (16). It is characterized by being.

  According to the above configuration, since the air nozzle is housed in the recess (16) formed at the bottom of the transport rod (11), the nozzle can be provided at an appropriate position that does not contact the spiral even in the middle of the transport.

  According to a third aspect of the present invention, in the second aspect, the concave portion (16) is formed in a horizontally long shape, and air nozzles (15N2), (15N3) are provided on the conveyance upper side of the concave portion, and an air nozzle outlet ( 15a) is directed toward the lower conveyance side, and an inclined surface (17) is provided on the lower conveyance portion of the recess.

  According to the said structure, air can be easily ejected toward the conveyance lower side in a conveyance basket, and a grain can be removed effectively.

In short, according to the first aspect of the present invention, air is blown from a plurality of locations in the transport path, so that the grain remaining on the spiral bottom can be reliably removed with a small amount of air.
According to the second aspect of the present invention, the air nozzle is provided in the recess formed in the bottom portion of the conveying rod while having the effect of the first aspect. The nozzle can be easily set at the position where it is not.

  According to the third aspect of the present invention, while having the effect of the second aspect of the invention, it becomes easier for air to be ejected into the conveying basket toward the lower conveyance side and effectively remove grain. Can do.

Side view of a huller Development view showing the flow of grain processing at the hulling facility Side view of the wind selector Side sectional view of grain conveyor Top view of the main part Rear view of the main part Side view of part of the elevator Same part back view

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a swing sorting type rice huller, and FIG. 2 shows the structure of each part and the flow of grain processing. 1 is a hull tank, 2 is a hulling section, 3 is a wind sorting section, 4 is a rocking and sorting section, 5 is a straw / return elevator, 6 is a hull sorting elevator, 7 is a hull sorting machine, 8 is a grain sorting lift, Reference numeral 9 denotes a grain sorter.

In the hulling portion 2, the hull flowing down from the hull tank 1 is hulled by a pair of de-floating rolls 2a, and the processed material that has been slid down is wind-selected by the wind selecting portion 3 below. .
As shown in FIG. 3, the wind selection unit 3 is configured to wind-select the processed product from the hulling unit 2, the compressed air fan 3 b that sends the selected wind to the wind selection channel 3 a, and the first grain. The first and second spiral cages 3c and 3d for receiving the second and second items, the rice husk receptacle 3e for receiving the rice husks, the rice husk conveying valve 3f, and the like are provided.

  As shown in FIG. 2, after receiving and horizontally transporting the grain (mixed rice) from the culm sorter 7, a transport culf 11 that returns to the culm sorting lift 6 and a laterally fed transport that is pivoted inside the transport culm. A grain conveying device 10 comprising a spiral 12 is provided.

  About the detail of the grain conveying apparatus 10, it has a structure as shown in FIGS. That is, the grain put into the upper side (starting end side) in the conveying basket 11 from the grain receiving port 13 is conveyed toward the lower side (terminal side) in the conveying basket 11 by the rotating conveying spiral 12 and is terminated. It is discharged from the outlet 14 and returned to the soot sorting elevator 6.

  The grain transport basket 11 is provided with a plurality of air nozzles 15N1, 15N2, 15N3,... For removing grains remaining at the bottom of the transport basket at a plurality of locations from the upper transport side to the lower transport side of the transport path. It is configured so as to remove the residual grain by spraying from the place onto the bottom surface of the conveying basket.

The air nozzle 15N1 is installed on the bottom surface of the transport rod 11, and the air nozzles 15N2 and 15N3 are housed in a recess 16 in which the bottom surface of the transport rod 11 is recessed downward.
Further, the recess 16 is long in the horizontal direction, that is, formed in the transport direction, and the air nozzles 15N2 and 15N3 are arranged on the upper side of the recess 16 in the transport direction. The blast air is directed so as to be ejected from the upper side to the lower side in the conveying direction. Further, an upward inclined surface 17 is provided on the lower side portion in the transport direction of the concave portion 16 so that the lower transport side is inclined upward from the bottom surface of the concave portion toward the bottom surface of the transport rod.

Next, the timing of control that the plurality of air nozzles 15N1, 15N2, and 15N3 eject will be described.
First, the air nozzle 15N1 on the upper transfer side and the air nozzle 15N2 in the middle of transfer are ejected for a predetermined time A (for example, 30 seconds) while the transfer spiral 12 is driven, and the residual grain on the upper transfer side is transferred to the transfer intermediate portion. The residual grain is conveyed to the lower conveyance side by the air nozzle 15N2 in the middle of the conveyance. During this time, the air nozzle 15N3 on the lower conveyance side stops ejection.

  When the predetermined time A elapses, the ejection of the air nozzle 15N1 on the upper transport side is stopped, and the air nozzle 15N2 in the middle of the transport and the air nozzle 15N3 on the lower transport side are ejected for the predetermined time B (for example, 30 seconds). Grains on the lower conveyance side are discharged from the conveyance basket 11.

  When the predetermined time B has elapsed, the ejection of the air nozzle 15N2 in the middle of the conveyance is stopped, the ejection of the air nozzle 15N3 on the lower conveyance side is performed for a predetermined time C (for example, 20 seconds), and the grains gathered on the lower conveyance side are conveyed. Discharge out of tub 11.

Thus, the maximum residual grain removal effect can be obtained with a small amount of air by sequentially using the necessary air nozzles instead of blowing all the air nozzles at once.
Air is supplied to each of the air nozzles 15N1 to 15N3 by a compressor 18 installed near the hulling portion 2.

  As shown in FIG. 2, an endless conveyor 20 that can be rotated forward and backward is provided at the exit of the finished brown rice of the rice sorter 7 so that circulation and discharge can be switched by forward and reverse rotation of the endless conveyor. Directional valves are generally used to switch between finishing circulation and discharge. However, dust or scrapped rice may get caught in the gap between the valve and the case, and the operation will be uncertain. Can do. Further, an image sensor 21 can be provided on the endless conveyor 20, and the discharge can be switched to circulation and the circulation can be switched to discharge by changing the image (numerical value). According to this, there is a time lag until the brown rice falling from above enters the elevator, so that it is possible to reliably prevent the koji from entering the product.

  In addition, by providing a brown rice identification sensor on the endless conveyor, the signal from the sensor can be used to indicate the level and to alert you when there is a change, or to automatically switch the finishing route to circulation It can also be configured.

Next, the air blow system of the elevator shown in FIGS. 7 and 8 will be described.
In an elevator of a type in which the tension belt 27 is moved up and down by a tension mechanism 27 to adjust the tension of the bucket belt, the tension belt 27 installed on the lower part of the elevator case 24 is below the shutter 29 on the grain supply funnel 28 side. The first air nozzle 30 that blows out air toward the lower side of the tensioning wheel 26 and the second air nozzle 31 that is disposed on the upper side of the first air nozzle 30 at the location aiming at the outlet 30a of the first air nozzle are provided. It is configured. That is, the blowing air from the outlet 31a of the second air nozzle 31 is blown toward the outlet 30a of the first air nozzle.

  In the case of the lower tension, a large amount of residual grains is generated depending on the position of the tensioning wheel, and the air nozzle outlet is buried in the remaining grain, and the effect of air blow cannot be exhibited. In the case of this example, regardless of the position of the lower extension wheel, the blowout air from the upper second air nozzle causes the blowout port of the lower first air nozzle to be above the portion where the grain is accumulated. The effect can be ensured.

  In maintenance control of the huller, a sensor is provided in the bearing part of the swing sorting part of the huller, and when this sensor detects a slight abnormal consumption state, it displays the estimated time for how long it can be used thereafter Then, it can be configured to control whether an alarm is generated or a predicted time is displayed again by a change in waveform and level thereafter. According to this, it is possible to automatically detect whether the replacement is necessary or not even in an intended state, and the administrator can easily replace the parts at the intended stage, so that they can be replaced before they are broken. Since the estimated time can be grasped in advance, the operation state can be judged and maintained, and the maintenance efficiency is good.

  In the above configuration, when the sensor detects an abnormal state, a warning is displayed, and then a warning is issued when the level fluctuation becomes large, and a step-by-step control for stopping can be performed. it can.

10 Grain Conveying Device 11 Grain Conveying Pot 12 Conveying Spiral 15N1 Air Nozzle 15N2 Air Nozzle 15N3 Air Nozzle
16 Recess 17 Inclined surface

Claims (3)

  A laterally-feed type transport spiral (12) is housed in a grain transport basket (11), and a plurality of air nozzles (15N1), (15N2), (15N3) are placed at a plurality of locations from the upper side to the lower side of the transfer path. A grain conveying device, characterized in that it is configured to blow air from a plurality of locations.   The grain according to claim 1, characterized in that a recess (16) is formed in the bottom of the conveying basket (11), and air nozzles (15N2), (15N3) are internally provided in the recess (16). Conveying device.   The concave portion (16) is formed in a horizontally long shape, and air nozzles (15N2) and (15N3) are provided on the upper conveyance side of the concave portion, the air nozzle outlet (15a) is directed toward the lower conveyance side, and the concave portion is conveyed. 3. Grain conveying device according to claim 2, characterized in that an inclined surface (17) is provided on the lower part.

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