JPS6121770A - Cereal grain rotary selecting cylinder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a grain rotary sorting tube that sorts grains while rotating in a sorting section of a huller or the like.

Problems to be Solved by the Invention In the case of a type in which grains are sorted on a cloth in the direction of rotation while being transferred to the inner circumferential bottom of a rotating rotary sorting tube in an appropriate layer thickness, grains are sorted into one sorting tube. The layer thickness tends to become thicker near the supply opening, and conversely, it decreases at the terminal end.If this becomes extreme and the layer thickness becomes thicker near the supply opening, it may result in poor sorting. Furthermore, if the rotation of the sorting cylinder is reduced in order to solve this problem, the sorting efficiency tends to decrease.

Means for Solving the Problem This invention provides a concave portion (1) in which grains can fit into the inner peripheral surface, and scoops up the grains supplied inside by rotating in the direction of rotation. Inside the rotary sorting tube (3) that sorts into the upper sorting gutter (2), there is a starting end supply port (4) that supplies the starting end of this sorting tube (3), and a starting end side of this sorting tube (3). The structure of the grain rotary sorting tube is provided with a transfer supply gutter (6) having an intermediate supply port (5) that opens wide when the sorted grain layer reaches a certain level or more and supplies the sorting tube (3) to the middle part. do.

Functions and Effects of the Invention For example, when used as a sorting tube of a rice huller, the peeled rice scraped by the hulling device is supplied to the inner peripheral surface of the rotating rotary sorting tube (3) for sorting. However, the washed rice is transferred in the transfer supply gutter (6) in the direction of the starting end supply port (4), falls from this starting end supply port (4) to the starting end of the sorting tube (3), and is transferred to the starting end of the sorting tube (3). 3) is subjected to a sorting action by the rotation, and this supplied amount of brown rice fits into the recess (1) of the sorting cylinder (3), is scooped up to the upper part of the rotation, and falls into the upper sorting receiving gutter (2) to be sorted. Since this sorting action is carried out while being transferred from the starting end to the terminal end within the sorting tube (3), the amount remaining on the terminal end side of the sorting tube (3) gradually decreases, and the amount that is discharged from this terminal end is gradually reduced. The rice becomes only paddy, or a mixed rice consisting of paddy and a small amount of brown rice, but during this kind of sorting process, there are some causes, such as an increase in the amount of rice falling from the starting feed port (4), which causes the sorting When the sorted grain layer at the starting end of the tube (3) reaches a certain level,
Depending on this layer thickness, the amount of drop from the intermediate supply port (5) to the vicinity of the middle of the sorting cylinder will increase, and conversely,
) decreases, the falling amount of the intermediate supply port (5) also decreases, and the sorted grain layer in the sorting tube (3) is moved toward the terminal end according to the amount of supply I@ of the transfer supply gutter (6). Therefore, it is possible to automatically eliminate sorting defects caused by an overlapping layer on the starting end supply port (4) side of the sorted grain layer, maintain stable sorting performance, and improve the sorting process. It is possible to increase efficiency by increasing the range of grain supply.

Note that this intermediate supply port (5) is always open to an appropriate opening degree, and a part of the grains being supplied is passed through the sorting tube (
3), and by increasing the layer thickness of the starting end supply port (4) by a certain amount or more as described above, the amount of supply from the intermediate supply port (5) may be increased. .

EXAMPLE A pulverizing chamber (9) equipped with a pair of pulverizing rolls (7) (7)
A paddy hopper (8) for supplying paddy to the dehulling rolls (7) is provided above, and a sorting suction fan (10) is provided at the front of the dehulling chamber (9) below. And this suction fan (
A sorting air passage (11) for smooth rice that communicates with 10), and a smooth rice sorting room (13) equipped with a screw (12), etc. for transferring the smooth rice to one side are provided. Rice-style selection room (13)
On the rear side, there is a sorting furnace (14) for brown rice that communicates with the air passage (11), and a spiral (15) at the rear of this air passage (14).
A brown rice-style sorting room (16) is provided, each equipped with a brown rice-style sorting room (16), and a sorting room (17) equipped with a cylindrical rotating sorting tube (3) in the front-rear direction is installed above the brown rice-style sorting room (16). establish.

The rotary sorting cylinder (3) has a pair of rollers (18) (18) on the left and right on the lower side of the front and rear parts of the outer periphery, respectively;
The left and right front and rear rollers (18) (18) are connected to a pair of left and right transmission shafts ("21") which are respectively supported on the front wall (19) and rear wall (20) of the sorting chamber (17). 21)
are fixed to each. The inner circumference of the rotary sorting tube (3) has a recess (1) into which brown rice can fit, and the sorting chamber (3) is provided in the center of the sorting tube (3). The transfer helix (2) is supported on the front and rear walls (19) (20) of
2) and a transfer helix (23) are provided adjacent to each other, and a transfer supply gutter (6) and a helical gutter (25) are formed to cover the bottom and both sides of both helices (22) and (23), respectively. On the - side of the supply gutter (6), there is a receiving plate part (26) which is inclined obliquely upward and whose tip approaches the inner circumferential surface of the sorting tube (3).
Also, on the - side of the helical gutter (25), there is a receiving plate part (26) which is inclined obliquely upward and whose tip is close to the inner circumferential surface of the sorting tube (3), and further Both gutter (24) (
25) is provided with an adjustment plate (29) having a pivot shaft (28) and capable of rotating left and right with its tip close to the inner circumferential surface of the sorting tube (3). .

A starting end supply port (4) that opens and projects downward is provided at the rear bottom of the transfer supply gutter (6), and this starting end supply port (
An intermediate supply port (5) which opens and projects downward is also provided at the bottom of the transfer supply gutter (6) in front of the receiving plate part (26).
) A sensor shaft (31) is provided which is supported by a shaft bearing part (30) protruding from the lower surface and the rear g (20), and from the front side of the starting end supply port (4) of this sensor shaft (31), The sensor arm (32) is made to protrude downward and this arm (3
A plate-shaped layer thickness sensor (33) curved along the inner peripheral surface of the sorting tube (3) is provided at the tip of the sensor shaft (3).
An interlocking arm (34) that projects obliquely downward is fixed to the front end of 1). The intermediate supply port (5) protrusion includes:
An on-off valve (35) that has a spindle and can be rotated to open and close is provided, and the on-off valve (35) is attached to the end of the spindle of the on-off valve (35).
An arm (36) is provided protruding in the opposite direction, and this arm (36)
6) Connect the tip end of the interlocking arm (34) with the rond (37) so that the layer thickness sensor (33) is attached to the sorting tube (3).
) The opening/closing valve (35) is configured to open when rotated toward the center.

In addition, (38) is a brown rice thrower (39) that transfers the crushed rice into the rotary sorting cylinder (3), and a brown rice thrower (39) that discharges the brown rice transferred by the screw (15) to the outside of the machine. 40) is a paddy thrower that returns the paddy sorted by the sorting tube (3) to the paddy hopper (8).

Next, the effect will be explained. The paddy in the paddy hopper (8) is removed by a pair of dehulling rolls (7) (7), and this removed rice is removed from the rice husks by the suction air of the suction fan (10) in the sorting air passage (1). The rice is removed, further transferred to the negative side by the helix (I2), and transferred to the rotating sorting tube (
3) is supplied to the transfer supply trough (6). The rolled rice in this transfer supply gutter (6) is transferred to the rear starting end supply port (4) by the transfer helix (22), and this starting end supply port (4)
) from the rotating sorting tube (3), and is moved forward as the sorting tube (3) rotates and is raised in the rotational direction of the sorting tube (3), and the fabric is deposited in the recess (1). The brown rice that has been fitted into the box is left to dry between the adjustment plate (29) and the receiving plate part (27), and is transferred to the front part by the transfer helix (23) and sent from the drop path in the front part to the brown rice helix (15) part. The mixture of paddy and brown rice in the upper layer of brown rice falls between the receiving plate (26) and the adjustment plate (29), and is discharged from the machine by the brown rice thrower (39). It is returned to the transfer supply trough (6).

When the thickness of the deposited layer at the starting end supply port (4) at the inner bottom of the sorting tube (3) increases beyond a certain level, the layer thickness sensor (33) moves upward and is interlocked via the sensor shaft (31). Arm (34
) rotates upward, and the rondo (37) and arm (36)
The on-off valve (35) rotates in the opening direction, and conversely, when the layer thickness sensor (33) moves downward, the on-off valve (35) rotates in the opening direction.
5) operates in the closing direction. In other words, when the layer thickness at the starting end supply port (4) exceeds a certain level, the amount of fall at the intermediate supply port (5) increases in accordance with the increase in layer thickness, and conversely, when the layer thickness falls below a certain level, the amount of fall in the intermediate supply port (5) increases in accordance with the increase in layer thickness. The amount will decrease.

Therefore, the intermediate supply port (5) is connected to the starting supply port (4).
The grains in the sorting tube (3) in the section are reduced and become a thin layer because the brown rice is sorted and removed to the outside of the sorting tube (3) by the spiral gutter (25). This intermediate supply port (
As a result of the opening of 5), the brown rice is supplied to the middle part of the sorting wJ (3), so that the sorting action of brown rice can be performed efficiently even from the middle part to the end part.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, with FIG. 1 being a side sectional view and FIG. 2 being a partial front sectional view. In the figure, the symbol (]) is the grain fitting recess, (2) is the sorting gutter, (
3) is a rotary sorting tube, (4) is a starting end supply, (5) is an intermediate supply port, and (6) is a transfer supply gutter.

Claims (1)

[Claims] A recess (1) into which grains can fit is provided on the inner circumferential surface, and as it rotates, the grains supplied inside are scooped up in the direction of rotation and sorted into the upper sorting channel (2). Rotating sorting tube (
3) Inside, there is a starting end supply port (4) that supplies the starting end of this sorting tube (3), and when the sorting grain layer on the starting end side of this sorting tube (3) reaches a certain level, it opens wide and closes the sorting tube. (3) A transfer supply gutter (
6) A grain rotary sorting cylinder.