JP3281582B2 - Specific gravity sorting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a specific gravity sorting apparatus used for separating seeds and the like from rice grains.

[0002]

2. Description of the Related Art Conventionally, when separating excellent seeds from raw material seeds, a specific gravity sorting apparatus that sorts out rice grains by specific gravity has been used. Some of the grains are light and some are heavy, and also contain impurities. The specific gravity sorter mainly sorts into light paddy, intermediate paddy, and heavy paddy, and the light paddy contains light debris and light impurities, so heavy paddy is used as excellent seed paddy.

[0003]

However, in such a conventional apparatus, there is a problem in that heavy rice also contains brown rice from which chaff has peeled, and this brown rice cannot be removed effectively. An object of the present invention is to provide a specific gravity sorting device capable of effectively removing brown rice.

[0004]

Means for Solving the Problems In order to achieve the object, the present invention takes the following means to solve the problem.
That is, a specific gravity sorting device that inclines the gutter into which the rice grains are thrown toward the opening side to cause the rice grains to flow down, and vibrates the gutter in a direction perpendicular to the flowing direction to sort the rice grains by specific gravity. In the above, while providing a discharge chute for discharging the heavy grains of the rice grains selected by the specific gravity from the gutter, the paddy was vertically divided by a perforated plate formed with a large number of selection holes through which brown rice passed and through which the rice did not pass. The specific gravity sorting device is characterized in that a vibrating mechanism for feeding the heavy particles discharged from the discharge chute onto the perforated plate of the horizontal gutter and vibrating the horizontal gutter to cause the heavy particles to flow down is provided.

[0005] Further, a wire mesh may be further provided below the perforated plate on the horizontal gutter, and a ball may be placed on the wire mesh. Furthermore, the sorting hole of the perforated plate may be a long and narrow hole in a flowing direction.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, reference numeral 1 denotes a gutter, and the gutter 1 has a sorting surface 1a, first and second side walls 1b, 1c, and further includes an upper side wall 1d orthogonal to the first side wall 1b, and an upper side wall 1d. The second side wall 1c includes an inclined side wall 1e formed obliquely.

An opening 2 is formed at an end of the gutter 1 facing the upper side wall 1d, and a receiving chute 4 is supported by the apparatus main body 6 below the opening 2. The gutter 1 is slightly inclined toward the opening 2, and is configured such that the chaff introduced into the gutter 1 flows down toward the opening 2.

A vibration mechanism (not shown) is incorporated in the apparatus main body 6, and the vibration mechanism is configured to vibrate the gutter 1 in a direction perpendicular to the downflow direction. As shown in FIG. 2, the first side wall 1b and the upper side wall 1d
A supply port 8 for introducing the rice grains into the gutter 1 is disposed at the corner of the gutter 1. The rice grains introduced into the gutter 1 are separated by the vibration of the gutter 1 and flow down toward the opening 2. I do. The receiving chute 4 is formed with three discharge ports 4a, 4b, 4c so that the falling chaff can be divided into light grains, intermediate grains, and heavy grains and discharged.

A projection 10 is formed inward at a connection point between the inclined side wall 1e and the second side wall 1c. A plurality of projections 10 are formed at predetermined intervals on the second side wall 1c downstream of the projection 10. Discharge chutes 12 to 14 are attached.
On the second side wall 1c, corresponding to the discharge chutes 12 to 14,
Gates 16 to 18 are provided, and gates 16 to 18 are provided.
The opening and closing of the chutes allows the opening amounts of the discharge chutes 12 to 14 to be adjusted.

A gutter 20 is provided along each of the discharge chutes 12 to 14 into which the rice grains discharged from each of the discharge chutes 12 to 14 are charged.
As shown in FIG. 5, the cross-sectional shape is formed so as to be substantially "U" -shaped. The horizontal gutter 20 is vertically divided by a perforated plate 22, and a large number of sorting holes 24 are formed in the perforated plate 22.

The shape of the sorting hole 24 is formed in a long hole elongated in the flowing direction, and the width of the long hole is formed so as to allow the passage of brown rice but not to allow the passage of paddy. Gutter 2
0, the wire mesh 26 between the perforated plate 22 and the bottom of the gutter 20
The wire mesh 26 is made of a mesh that can pass both brown rice and paddy. A plurality of balls 28 are placed on the wire net 26.

The leading end of the gutter 20 is opened to the discharge port 4c for heavy particles of the receiving chute 4, and a brown rice discharging chute 30 is provided on the bottom surface of the gutter 20 near the receiving chute 4. The gutter 20 has a plurality of leaf springs 3
A vibration mechanism 38 is provided so as to be able to vibrate in the downstream direction via the motor 2, and vibrates the gutter 20 in the downstream direction via the eccentric bearing 36 by driving of the motor 34.

Next, the operation of the above-described specific gravity sorting apparatus of the present embodiment will be described. First, rice grains are thrown from the supply port 8 onto the sorting surface 1a of the gutter 1, and the thrown rice grains flow down along the gutter 1 while vibrating due to the vibration of the gutter 1. At that time, by vibrating, the unhulled or unripe light grains flow down along the first side wall 1b side, and the heavy grains suitable for the seed rice flow down along the second side wall 1c side.

Particularly heavy particles flow down along substantially the upper side wall 1d and the inclined side wall 1e, get over the protrusions 10, and pass through the second side wall 1d.
Flow down along c. At this time, the flow of the heavy particles along the inclined side wall 1e is once agitated by the projections 10. Protrusion 10
The heavy particles that have passed over flow down again along the second side wall 1c due to the vibration, and separate the light particles mixed with the heavy particles.

When the heavy particles reach the gates 16-18, they pass through the gates 16-18 and are thrown from the discharge chutes 12-14 onto the perforated plate 22 of the gutter 20. Since the downspout 20 is vibrated in the downstream direction by the vibration mechanism 38, the perforated plate 2
The rice grain on 2 flows down while vibrating along the gutter 1.

[0016] The heavy grains to be thrown into the perforated plate 22 from the discharge chutes 12 to 14 together with rice grains suitable for seed rice,
Brown rice with rice husks is also included. Since the brown rice is smaller than the rice grain by the amount of the rice husk, the brown rice passes through the sorting hole 24 and
6 fall on. Then, it further falls through the wire net 26 onto the bottom surface of the gutter 20. Although there is some paddy clogged in the sorting hole 24, the ball 28 vibrating up and down on the wire mesh 26 due to the vibration of the horizontal gutter 20 hits the perforated plate 22 and strikes down with the impinging force to prevent clogging of the sorting hole 24.

The brown rice falling on the bottom surface flows down along the gutter 20 and is discharged from the brown rice discharge chute 30. The rice grains remaining on the perforated plate 22 flow down on the perforated plate 22 and are discharged from the discharge port 4 c of the receiving chute 4. In addition, the rice grains that have fallen on the wire mesh 26 include not only brown rice but also some rice grains. Such rice grains pass through the wire mesh 26,
It falls on the bottom surface, flows down along the gutter 20, and is discharged from the brown rice discharge chute 30.

The present invention is not limited to such an embodiment at all, and can be implemented in various modes without departing from the gist of the present invention.

[0019]

As described in detail above, the specific gravity sorting apparatus of the present invention has an effect that brown rice can be effectively sorted and removed from heavy grains sorted on a gutter. In addition, by providing a perforated plate, brown rice can be strictly selected, and clogging of the selection hole by a ball can be prevented. Further, by making the sorting hole a long hole elongated in the downflow direction, the brown rice flowing down can easily pass through the long hole.

[Brief description of the drawings]

FIG. 1 is a perspective view of a specific gravity sorting device as one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a sorting state at a gutter according to the embodiment.

FIG. 3 is an enlarged cross-sectional view of the gutter of the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Gutter 4 ... Receiving chute 6 ... Device main body 10 ... Projection 12-14 ... Discharge chute 20 ... Side gutter 22 ... Perforated plate 24 ... Sorting hole 26 ... Wire mesh 28 ... Ball 30 ... Brown rice discharge chute 38 ... Vibration mechanism

Claims (3)

(57) [Claims] 1. A gutter into which a rice grain is introduced is inclined toward an opening to cause the rice grain to flow down, and the gutter is vibrated in a direction perpendicular to the flow-down direction to sort the rice grain by specific gravity. In the specific gravity sorting device, while providing a discharge chute that discharges heavy grains of the rice grains selected by the specific gravity from the gutter, a perforated plate formed with a large number of selection holes through which brown rice passes and through which the paddy does not pass. A specific gravity sorting device, comprising: a vibrating mechanism that inputs the heavy particles discharged from the discharge chute onto the perforated plate of the partitioned horizontal gutter and vibrates the horizontal gutter to cause the heavy particles to flow down. 2. A specific gravity sorting apparatus, wherein a wire mesh is further provided under the perforated plate on the gutter, and a ball is placed on the wire mesh. 3. The specific gravity sorting device according to claim 1, wherein the sorting hole of the perforated plate is an elongated hole elongated in a flowing direction.