JPH06343925A - Residual granule discharge device of cereal grain selector - Google Patents

Abstract

PURPOSE:To prevent those wear and damage, of the rotary structural part of a rotating spiral body or a sealing mechanism against the rotating spiral body, which produce easily due to high-speed rotation, from occurring by allowing the rotating spiral body to rotate at a high speed within a limited period of time required for discharging the residual granules. CONSTITUTION:A means for making variable the number of poles which reduces the number of poles of an electric motor for driving a rotating spiral body from the time of selecting the number of poles, is provided. Further, a means for discharging residual granules is provided which rotatesx the rotating spiral body at a high speed using a means 28 for making variable the number of poles. In addition, a timer 30 which rotates the motor at a high speed within a specified period of time from the time of selecting a residual granule discharge function, is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary sorting net cylinder for discharging waste grains mixed in a grain to be sorted, and lifting and moving grains to be sorted along the inner surface of the rotary sorting net cylinder. The present invention relates to a grain sorting machine including a sorting unit including a rotating spiral body, and a residual grain discharging device for discharging grains remaining in the sorting unit to the outside of the sorting unit after the sorting work is completed.

[0002]

2. Description of the Related Art A grain sorting machine, in which a rotary helix is provided inside a vertical sorting net cylinder and the grain to be sorted is lifted and moved by the rotary helix and the waste particles are sorted and discharged by the sorting net barrel, is known, for example. Various types are known, as described in JP-A-60-202771.

[0003]

In the grain sorter of this type, when the rotation of the rotary spiral is stopped at the end of the sorting operation, the grains remain in the sorting section. If the grains are left in the sorting section while they remain, there is a risk that the grains will be mixed into the selected grains during the next sorting and the quality thereof will be impaired. Further, if the grains are left in the sorting section for a long period of time beyond the season, the grains are deteriorated and solidified, which causes inconveniences such as sticking to the rotating spiral and clogging of the sorting net cylinder. For this reason, it is important to discharge the residual grains in the sorting section each time the work is completed.

The present invention is intended to solve this problem, and at the end of the sorting operation, by selecting the residual particle discharging function by the residual particle discharging operation section, the rotating spiral body is rotated at a high speed, It is possible to reliably discharge the grains remaining in the sorting unit, and by rotating the rotary spiral at a high speed for the time required to discharge the residual particles for a certain period of time, the rotating structure part of the rotary spiral that is likely to occur with high speed rotation. An object of the present invention is to provide a residual grain discharging device in a grain sorting machine, which can eliminate wear and tear of a sealing structure for a rotating spiral body and the like, and can significantly extend the service life.

[0005]

The present invention is configured as follows as technical means for achieving the above object. That is, the first configuration is a rotary sorting net cylinder for discharging the waste grains mixed in the grain to be sorted, and a rotary spiral body for lifting and moving the grain to be sorted along the inner surface of the rotary sorting net cylinder. In a grain sorter including a sorting unit configured by, a residual grain discharging unit that discharges grains remaining in the sorting unit by rotating the rotating spiral at a high speed, and a residual grain discharging function by the residual grain discharging unit are selected. A grain discharging operation unit and a rotation control unit for the rotating spiral body that keeps the rotating spiral body in a high-speed rotation state for a certain period of time from when the remaining grain discharging operation unit selects the remaining grain discharging function are provided.

In the second configuration, the rotary selection net cylinder for discharging the waste particles mixed in the selected cereal grains, and the selected cereal grains are lifted and moved along the inner surface of the rotary selection net cylinder. In a grain sorter equipped with a sorting unit configured with a rotating spiral, a residual grain discharging means for discharging the grains remaining in the sorting unit by rotating the rotating spiral at a high speed, and a residual grain discharging function by the residual grain discharging means are provided. The remaining spiral discharge operation unit to be selected, and the rotating spiral body that is kept in the rotating condition at the time of sorting after the rotating spiral member is set to the high-speed rotation state for a fixed time after the remaining particle discharge operation unit is selected. The rotation control means is provided.

Further, in the first configuration or the second configuration, inverter control means for increasing / decreasing the number of rotations of the electric motor for rotationally driving the rotary spiral is provided, and the inverter control means controls the residual grain discharge function by the residual grain discharge operation unit. The configuration is such that the electric motor is rotated at a high speed for a fixed time from the time of selection, and the rotating spiral is rotated at a high speed by the pole number changing means that reduces the number of poles of the electric motor that rotationally drives the rotating spiral from that at the time of selection. It constitutes a residual particle discharging means.

[0008]

According to the apparatus of the present invention, when the residual grain discharging function by the residual grain discharging operation section is selected, the rotary spiral rotates at a high speed for a certain period of time after the selection and the grains remaining in the sorting section are eliminated. To be done. After a certain period of time has passed, the rotation of the rotary spiral is stopped, or the rotation control means for the rotary spiral returns the rotary state to the state at the time of sorting and holds it. In the case where the inverter control means for increasing / decreasing the rotational speed of the electric motor for rotationally driving the rotating spiral body is provided, the time for shifting to the high speed rotation from the time of selecting the residual particle discharging function, the acceleration during that time, and the rotational speed during the high speed rotation are arbitrarily set. Since it can be set to, the residual discharge function is further improved. Also, in the case where the number of poles changing means for reducing the number of poles of the electric motor for rotationally driving the rotary spiral is provided compared to that at the time of selection, the changeover change simply reduces the number of poles of the electric motor by selecting the residual grain discharge function by the residual grain discharge operation unit Only by doing so, it is possible to set the high-speed rotation state for discharging the residual particles, and change it to the normal rotation state at the time of sorting by changing the switching to return the number of poles of the electric motor.

[0009]

Embodiments of the present invention will be described with reference to the drawings. In FIG. 1 and FIG. 2, reference numeral 1 is a sorting unit, and the sorting unit 1 is configured by providing a rotary sorting mesh cylinder 3 in an exterior body 2 and incorporating a rotary spiral 4 in the rotary sorting mesh cylinder 3. The rotary spiral body 4 is interlocked with the electric motor 6 via the speed reduction mechanism 5 at the lower part, and is rotationally driven by the electric motor 6. The rotary selection net cylinder 3 is interlocked with the electric motor 6 via the speed reduction mechanism 7 and is rotationally driven in the reverse direction at a lower speed than the rotary spiral body 4.

At the lower position of the rotary selection mesh cylinder 3, a grain supply cylinder 8 for the grains to be sorted is provided fixed to the exterior body 2.
A supply hopper 9 is connected to the supply cylinder 8. A supply cylinder 10 that engages with the rotary selection mesh cylinder 3 and integrally rotates is located in the supply cylinder 8, and a felt packing 11 is provided between the lower outer periphery of the supply cylinder 10 and the supply cylinder 8. Is intervened. At the bottom of the supply cylinder 10 is an inlet 1 for the grain to be sorted.
Two are provided. Further, a guide vane 13 is formed on the outer periphery of the supply cylinder 10, and the rotating supply cylinder 10
And the guide blades 13 push down the grains to be sorted supplied from the supply hopper 9 and guide them to the inside from the inlet 12. Reference numeral 14 is a fine powder discharge groove such as bran, 15 is a discharge blade thereof, and fine powder leaking from the seal portion by the felt packing 11 is discharged blade 15 that rotates integrally with the supply cylinder 10.
And is discharged from the fine powder discharge port 16. A bran tray is placed in the lower part of the exterior body 2 (not shown). 17 is the upper grain discharge blade, 1
Reference numeral 8 is a waste particle receiving portion, and 19 is a waste particle discharging blade. The scrap particles scraped out by the scrap particle discharging blades 19 that rotate integrally with the rotary sorting net cylinder 3 are discharged from the scrap particle discharging duct 20. Reference numeral 21 is a residual particle discharge duct of the supply cylinder 10. 22 is a tank for temporarily storing the refined grains of the selected cereals, 23 is an outlet thereof,
The delivery port 23 is provided with an automatic opening / closing shutter 24.

Reference numeral 25 is a weighing scale, which has a built-in load cell for converting the weight into an electric signal. The weight scale 25 is arranged and used below the delivery port 23 of the tank 2. 26 is a bag for storing grains.
The selected refined grains are filled in the storage bag 26 from the delivery port 23 of the tank 22, and when a preset weight is detected by the weight scale 25, automatic weighing control is performed so that the automatic shutter 24 is automatically closed. Done. A control device 27 for automatic weighing, such as setting of a weight value to be weighed and closing the automatic shutter 24 of the grain delivery port 23 when the weight value is weighed by the weighing scale 25, is provided in the main body of the grain sorter. It is equipped.

The grain sorting machine according to the present invention is provided with a residual grain discharging means for discharging the grains remaining in the sorting section 3 at the end of the sorting operation. As shown in FIG. 3, the residual particle discharging means is a residual particle discharging operation section including a residual number discharging switch 29 and a variable number of poles switching circuit 28 for rotating the motor 6 at a high speed by reducing the number of magnetic poles. The rotation control means is provided with a timer 30 that keeps the electric motor 6 in a high-speed rotation state for a fixed period of time after the remaining grain discharge operation unit selects the remaining grain discharge function. The electric motor 6 is 4
It has one electrode and uses a 4-pole motor for sorting and a 2-pole motor for discharging residual particles. That is, the number-of-poles switching circuit 28 causes the electric motor 6 when the residual particle discharge switch 29 is turned on.
The number of electrodes of 4 is switched from 4 to 2 and the power source is cut off and the electric motor 6 is stopped when a predetermined time set in the timer 30 has elapsed. Further, at this time, the number of electrodes of the electric motor 6 is switched to four poles by the pole number switching circuit 28 and then stopped. Reference numeral 31 is a power source of the electric motor 6. In the configuration shown in FIG. 3, the power source is an AC power source of 50 Hz (or 60 Hz), and when the electric motor 6 has four poles, 1500 r.p.m.
p. m (or 1800 rpm), and 3000 r.p.m. when there are two poles. p. m (or 3600 rpm)
Is.

FIG. 4 shows another example of that shown in FIG. What is shown in FIG. 4 is an inverter control means 3 for increasing / decreasing the number of rotations of an electric motor 6 that rotationally drives a rotating spiral body 4.
2 is provided as a residual particle discharging means, and the inverter control means 32
Thus, the electric motor 6 is made to rotate at a high speed for a fixed period of time preset in the timer 30 from the time the residual particle discharge switch 29 is turned on. The transition to the high-speed rotation state at the time of discharging the residual particles can be controlled by the inverter control means 32 so as to gradually accelerate and rotate, and the rotational impact in the process of transition to the high-speed rotation can be suppressed. In addition, in this embodiment, an inverter control unit 33 is provided for controlling the rotation speed of the electric motor 6 in response to a weight measurement signal from the weight scale 25 at the time of selection. Other configurations are the same as those shown in FIG.

According to the apparatus of the present invention configured as described above, when the residual particle discharge switch 29 is turned on and the residual particle discharge function is selected, the fixed time set in the timer 30 is limited from the time of selection. The rotating spiral body 4 rotates at high speed, and the grains remaining in the sorting unit 3 are discharged. And timer 30
After the elapse of the fixed time set to, the rotation of the rotary spiral body 4 is stopped, or the rotary spiral body 4 is returned to the rotation state at the time of selection and the operating state is maintained. In the case where the number-of-poles changing means 28 for reducing the number of electrodes of the electric motor 6 for rotationally driving the rotary spiral 4 is provided, the number of poles of the electric motor 6 is simply reduced by selecting the residual-grain discharging function by the residual-grain discharging switch 29. Only by switching change, a high-speed rotation state for discharging residual particles can be obtained, and by switching change that returns the number of poles of the electric motor 6 to a normal rotation state at the time of sorting. Further, in the case where the inverter control means 32 for increasing / decreasing the number of rotations of the electric motor 6 for rotationally driving the rotating spiral body 4 is provided, the time to shift to the high speed rotation from the time of selecting the remaining particle discharging function, the acceleration during that time, and the high speed rotation time. Since the number of rotations of can be set arbitrarily, the residual discharge function is further improved.

In FIGS. 5 and 6, as the rotary spiral member 4, suitable ones for rice and wheat are illustrated respectively. The rotating spiral body 4 for rice shown in FIG. 4 has a structure in which the sorting effective length with respect to the diameter is approximately 1: 3 and the spiral pitch is narrow. In this rotary helix 4 for rice, 3
000r. p. m (or 3600 rpm), it takes about 20 seconds to discharge the residual particles. The barley rotary spiral 4 shown in FIG. 5 has a selection effective length of about 1: 3 with respect to its diameter.
In addition, each spiral has a notch 34 for dropping a part of the wheat to be pumped down. In this rotary helix 4 for wheat, 3000 r.p.m. p. m (or 360
0r. p. In m), the time required for discharging the residual particles is about 30 seconds. The smaller the pitch of the spiral, the longer the time required to discharge the residual particles, and the faster the rotating spiral body 4 is rotated, the shorter the time required. However, since the rotating spiral body 4 is heavy, the durability of bearings, etc. Due to such restrictions, it is usually 3000
r. p. m (or 3600 rpm) is the upper limit for high speed rotation. Therefore, due to the restriction of high-speed rotation, the ratio of the diameter to the length of the rotating spiral body 4 is related to the required time for discharging the residual particles, and the smaller the ratio, the longer the residual discharging time. It should be noted that the time required to discharge the residual grains for wheat is longer than that for rice because the surface of wheat has a larger frictional resistance than the surface of rice, and the amount dropped from the notch 34 is large. To do.

[0016]

According to the present invention, at the end of the sorting operation, by selecting the residual grain discharging function by the residual grain discharging operation section, the rotary spiral is rotated at a high speed to ensure that the grains remaining in the sorting section are secured. In addition to being able to discharge the rotating spiral, the rotating spiral is rotated at a high speed for a certain period of time to discharge the residual particles. It is possible to obtain the effect that the wear and damage of the can be eliminated and the service life can be greatly extended.

[Brief description of drawings]

FIG. 1 is a sectional view of a grain sorter according to the present invention.

FIG. 2 is an overall perspective view of a grain sorter according to the present invention.

FIG. 3 is a block diagram showing a configuration of a residual particle discharging device.

FIG. 4 is a block diagram showing another example of the configuration of the residual particle discharging device.

FIG. 5 is a perspective view illustrating a rotary helix for rice.

FIG. 6 is a perspective view illustrating a rotary helix for wheat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sorting part 3 Rotating sorting net cylinder 4 Rotating spiral body 6 Electric motor 8 Sorting grain supply chamber 9 Supply hopper 10 Supply cylinder 11 Felt packing 22 Tank 25 Weight scale 28 Pole number switching circuit 29 Remaining grain discharge switch 30 Timer 32 Inverter control means

Claims (4)

[Claims] 1. A rotary selection mesh tube for discharging waste particles mixed in the selected grain and a rotary spiral body for lifting and moving the selected grain along the inner surface of the rotary selection mesh tube. In a grain sorter including a sorting unit, a residual grain discharging unit that discharges grains remaining in the sorting unit by rotating the rotating spiral at a high speed, and a residual grain discharging operation that selects the residual grain discharging function by the residual grain discharging unit. And a residual grain in a grain sorter, which is provided with a rotation control means for the rotary spiral that keeps the rotary spiral in a high-speed rotation state for a certain period of time after selecting the residual grain discharge function by the residual grain discharge operation unit. Ejection device. 2. A rotary selection net cylinder for discharging waste particles mixed in the selected cereal grains, and a rotary spiral body for lifting and moving the selected cereal grains along the inner surface of the rotary selection net cylinder. In a grain sorter including a sorting unit, a residual grain discharging unit that discharges grains remaining in the sorting unit by rotating the rotating spiral at a high speed, and a residual grain discharging operation that selects the residual grain discharging function by the residual grain discharging unit. And a rotation control means for the rotary spiral which holds the rotary spiral after returning the rotary spiral to a high speed rotation state for a fixed time after selecting the residual particle discharge function by the residual particle discharge operation unit A residual grain discharging device in a grain sorter, which is characterized in that 3. An inverter control means for increasing or decreasing the number of revolutions of an electric motor for rotationally driving a rotating spiral is provided, and the inverter control means makes the electric motor operate at a high speed for a fixed time from the time when the residual particle discharge operation unit selects the residual particle discharge function. The residual grain discharging device in a grain sorter according to claim 1 or 2, wherein the residual grain discharging device is configured to rotate. 4. The residual grain discharging means for rotating the rotary spiral at a high speed by means of a pole number varying means for reducing the number of poles of the electric motor for rotating the rotary spiral compared to the time of selection. Residual grain discharging device in grain sorter.