JP2556714B2 - Grain sorting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION “Industrial field of application” The present invention relates to a grain sorting device such as a rice sorting machine vertically provided with a rotary sorting tube for separating and removing scrap rice from brown rice. The present invention relates to a planetary sorting structure in which the sorting cylinders are allowed to rotate while revolving.

"Prior Art" As an example of a structure in which this kind of selection cylinder makes a planetary motion, there is U.S. Pat. No. 3,767,047.

"Problems to be solved by the invention" However, in the case of the conventional structure of this kind, since the rotation and revolution speeds are always constant, when the sorting accuracy is adjusted to high or low precision, the mesh sorting cylinder is appropriately selected. There was the trouble that it had to be replaced each time, and there was a drawback that work efficiency was extremely poor.

[Means for Solving the Problems] Therefore, according to the present invention, a state in which a speed change mechanism is incorporated in a drive system of a spindle for revolving and rotating the sorting cylinder to maintain a constant speed ratio of the revolving speed and the rotation speed of the sorting cylinder. Are configured to change the revolution speed and the rotation speed.

[Operation] According to the present invention, when the revolution speed of the sorting cylinder is changed to a high speed, separation and leakage of waste grains to the outside of the sorting cylinder is caused by an increase in the revolution centrifugal force. In order to improve the sorting accuracy by increasing the centrifugal force, the grains that become stuck to the centrifugal outer peripheral side of the sorting cylinder due to the increase of the revolution centrifugal force are rotated by the rotation speed according to the increase of the centrifugal force. It is possible to constantly agitate uniformly to promote downward flow and to maintain a stable yield of high-quality grains.Therefore, when adjusting the sorting accuracy, the revolution speed of the sorting cylinder changes to high or low speed. Even so, the rotation speed is always changed to be in balance with this, and it is possible to always obtain an appropriate amount of good quality grains corresponding to the sorting accuracy, and to perform the optimal sorting work in terms of both sorting accuracy and processing capacity. Is.

Embodiment An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an explanatory view of a drive unit, FIG. 2 is a front view of the whole, FIG. 3 is a side view of the same, and FIG. 4 is a rear view of the same.
Is a rice selection machine, (2a) and (2b) are brown rice input ports opened on the right and rear sides of the machine, (3) is a brown rice receiving hopper that receives the brown rice from the input ports (2a) and (2b), and (4 ) ... is a vertical sorting cylinder for separating and sorting scrap rice such as immature rice and broken rice from brown rice from the hopper (3), (5) is the sorting cylinder (4) ...
The waste rice outlet that takes out the waste rice separated and removed by
(6) is a grain-raised rice conveyor for grain-grading the grain-adjusted rice sorted by the sorting cylinders (4) ..., (7) is the conveyor (6)
The unpolished rice tank for temporarily storing the unpolished rice thus fried, (8) is the unpolished rice discharge port for taking the unpolished rice in the tank (7) out of the machine, and (9) is the discharge port (8). An opening / closing shutter provided, wherein when the brown rice fed through the inlets (2a) (2b) is fed into the sorting cylinders (4) ..., the rotary sieving action of the barrels (4) causes the cylinders (4) to rotate. It is configured to separate and remove scrap rice on the outside of the mesh surface.

As shown in FIGS. 5 to 8, four sorting cylinders (4) are provided at equal intervals around the rotary spindle (10), and the upper ends of the cylinders (4) have a sealing lid shape. Upper receiving member (11). Bush (12). Hollow support shaft (13). The hexagonal shaft portion (10a) of the main shaft (10) through the distribution plate (14) and the upper combined body (15).
The upper and lower discs (17) and (18) are supported on the hexagonal shaft portion (10a) via the lower joint body (16) so as to be vertically slidable and integrally rotatable (revolving). The lower disk (18) is supported and the lower end of the selection cylinder (4) is rotated through the lower receiving member (19), the hexagonal head (20a) of the rotary support shaft (20), and the support bearing (21). (Rotation) It is supported freely.

The lower end of the main shaft (10) is rotatably supported by a base frame (23) fixed to a square frame machine frame (22) via a holder (24) which is a main shaft boss. Vertical shift shaft (26) installed in the motor room (25)
The main shaft (12) is interlocked with the reduction gears (27) (28). Further, in the motor chamber (25), a pulley shaft (30) of a drive pulley (29) for driving the grain elevator (6).
The pulley shaft (30) to the holder (3
1) and supported on the motor shaft (32a) of the drive motor (32) via a pair of deceleration V pulleys (33) (34). V belt (35) and tension pulley (36). )
Is provided so as to drive the fried grain conveyor (6) to rotate at a constant speed, while the pulley shaft (30) is connected to the speed change shaft via a disc friction wheel type continuously variable transmission mechanism (37). (2
6) is linked and linked so that shifting can be adjusted freely. The speed change mechanism (37) is attached to the hexagonal shaft portion (26a) of the speed change shaft (26) so as to be slidable in the vertical direction, and has a friction plate (38) having a rubber surface (38a) at an outer peripheral edge thereof, and the pulley shaft (30). It is attached to the rubber surface (38a) through the compression spring (39) so that it can slide left and right, and the end surface (4
(A) A disc (40) for suppressing the pressure and a bottom plate (41) of the rice sorter (1) mounted via a bracket (42) and a support shaft (43) to a shaft coupling body of the friction plate (38). Pin on (44) (45)
And a sliding operation plate (47) to be connected through the engagement groove (46)
And a gear shift operation lever (50) for fixing the base end to the operation plate (47) via the connecting rod (48) and exposing the end to the outside of the lever guide plate (49) on the front of the machine. By moving the friction plate (38) up and down along the hexagonal shaft portion (26a) of the speed change shaft (26) with the lever (50), the main shaft (1
It is configured such that the rotation of (0) is appropriately changed in speed.

As shown in FIG. 9, the grain-cleaning rice conveyor chamber (51) in which the fried grain conveyor (6) is installed is arranged on the left side of the motor chamber (25) via a single partition plate (52). , Deep-fried rice scrap conveyor (53) on the back side of this conveyor room (51)
The waste rice conveyor chamber (54) in which the inside is installed is arranged via the partition plate (55), and the waste rice taken out to the lower part of the sorting cylinder (4) is substantially passed through the screw conveyor (53) on the rear surface of the machine body. It is provided so that the grain can be fried to the discharge port (5) at the center height and discharged to the outside of the machine. The lower end of the conveyor shaft (56) of the screw conveyor (53) is connected to a disc friction wheel type continuously variable transmission mechanism (5
7) via the motor shaft (32a) interlockingly connected, the speed change mechanism (57), the conveyor shaft (56) at the lower end of the sleeve (58), mounting position adjusting collar (59) and bolt (60) And a friction plate (61) having a rubber surface (61a) on the outer peripheral edge thereof, the motor shaft (3
A disc (6) that is attached to 2a) via a compression spring (62) so as to be slidable left and right to press the end face (63a) against the rubber face (61a).
3) and are provided, and are mainly available at the time of shipment of this rice selection machine (1).
In the case of 0HZ specifications, it is set to the solid line state in Fig. 1, and in the case of 50HZ specifications, the collar (59) is interposed between the friction plate (61) and the sleeve (58) and moved to the position below the phantom line in the figure. Thus, it is possible to perform low-speed and high-speed two-stage gearshifts having a smaller gearshift width than the sorting gearshift mechanism (37).

Further, as shown in FIG. 10, the sun gear (64) is integrally fixed to the holder (24), and the planetary gears (65) are integrally fixed to the support shafts (20).
When the support shaft (20) around the main shaft (10) is revolved by meshing with the sun gear (64) via the gears (64) (65) in the direction opposite to the revolving direction (a). ) (66) to rotate the respective support shafts (20), respectively, so that the revolving direction (a) and the revolving direction (b) of the sorting cylinder (4) are opposite to each other. The idle gear (66) is attached to the lower disc (18) via the gear shaft (66a).

The rotation speed (n) of each of the selection cylinders (4) is formed to be higher than the revolution speed (N) (n> N),
By setting the rotation speed (n) to be higher than the revolution speed (N) and in the opposite direction, the brown rice which is in a state of sticking to the outer side of the inner circumference of the cylinder (4) by centrifugal force at the time of revolution It is configured so as to be uniformly stirred by the rotation action in the opposite direction of (4) to promote the downward flow to improve both the sorting accuracy and the processing capacity.

Further, as shown in FIGS. 8 and 10 to 11, a scrap rice discharging blade (67) and a smoothed brown rice discharging blade (68) are provided on the outer peripheral edges of the upper and lower discs (17) (18), respectively. Upper scrap rice gutter (69) and lower straight brown rice gutter (7) integrally fixed in the frame (22)
Face each of these feathers (67) (68) in (0),
The scrap rice outlet (71) opened in the scrap rice gutter (69) is connected to the conveyor tube () of the screw conveyor (53) through the scrap rice chute (72) and the opening (52a) of the partition plate (52). 73)
While connecting to the scrap rice intake (74) to be opened at, the smooth rice outlet (75) to be opened at the bottom of the smooth rice gutter (70)
The unpolished rice conveyor chamber (51) through the chute (76)
Connect to the regular brown rice outlet (77) of
The scrap rice taken out to 1) is discharged to the outside of the machine from the discharge port (5) on the left side of the machine through the screw conveyor (53), and the plain brown rice taken out to the discharge port (75) is lifted. It is configured so that the grain can be fried in the prepared brown rice tank (7) via the grain conveyor (6) and appropriately taken out of the machine.

Further, as shown in FIGS. 8 and 11 to 12, a plurality of sugar drop holes (79) are formed in the bearing plate (78) which supports the lower end of the conveyor shaft (56) on the conveyor tube (72). Then, the sugar and dust mixed in the scrap rice are dropped to the lower sugar extraction chute (80) through the drop holes (79) ... and taken out of the machine from the sugar discharge port (81) on the rear side of the machine. are doing.

Further, a cleaning port (82) is opened near the lower end of the conveyor tube (73) toward the left side of the machine body, and the port (82) is bolted (83).
When the inspection cover (86) that closes the common inspection opening (85) of each conveyor chamber (51) (54) on the lower left side of the machine is opened by closing the side cover (84) so that it can be opened The lid (84) is configured to be opened.

Furthermore, the two urethane rubber plate scrapers (89) (89) are attached to the hexagonal shaft portion (10a) of the main shaft (10) via a bolt (87) and a pair of contact plates (88a) (88b). The scrapers (89) (89) are fixed, and the both end edges of these scrapers (89) (89) are brought into sliding contact with the screening surface having a large number of meshes (90) of the screening cylinders (4). The sorting cylinders (4) are made to rotate in the same rotation as the revolution, and the cylinders (4) are always kept in contact with the working surfaces of the scrapers (89) and (89), and the revolution centrifugal force is weakest during the rotation. It is configured so as to remove the scraps that are clogged in the mesh (90) near the center position of the revolution.

As shown in FIGS. 5 to 7, the distribution plate (14) is formed in a quadrangular shape, and the support shafts (13) are provided at the corners of the plate (14) and the sorting tubes ( 4), etc. When the driving of the sorting section (91) is stopped, the hopper (3)
The angle of repose (α) of brown rice staying between the supply port (3a) and the upper flat surface of the distribution plate (14) is kept constant, and the spindle (13)
It is provided so as to surely prevent brown rice from flowing into the sorting cylinder (4) through the hollow charging hole (13a). Further, a rubber elasticity preventing body (92) for preventing brown rice scattering is integrally fixed to the upper flat surface of the distribution plate (14), and the distribution plate (1
4) Upper detent (15) with detent balls (93)
A cylindrical body (95) for enclosing the ball through the compression spring (94) is provided, and when the ball (93) is engaged with the lower notch (96a) formed in the hexagonal shaft portion (10a), the phantom line in FIG. As shown in the drawing, the hexagonal hole (19a) of the lower receiving member (19) of the sorting cylinder (4) is fitted and supported on the hexagonal head (20a) of the support shaft (20) to perform the sorting operation, while the distribution plate ( When the sorting cylinders (4) are integrally moved upwards via 14) to engage the balls (93) with the upper notches (96b) formed in the hexagonal shaft portion (10a), as shown by the solid line in FIG. The lower receiving member (19) is set in a state of being separated from the hexagonal head (20a), and then each of the sorting cylinders (4) is pushed down to lower the upper receiving member (11) from each of the support shafts (13). The sorting cylinders (4) ... When the distribution plate (14) is moved up, even if the upper part of the preventive body (92) abuts and interferes with the bottom of the hopper (3), the preventive body (as shown by the phantom line in FIG. 6). It is configured such that the selection cylinder (4) can be detached without any trouble by deforming 92).

Further, as shown in FIG. 13, the fried conveyor chamber (51)
Side wall surface (22) that separates from the upper straight rice tank (7)
In a), a grain-adjusted rice tank inlet (97) for feeding grain-adjusted rice fried by the conveyor (6) into the tank (7) is opened, and the bottom flow surface (7a) of the bottom part (7a) of the tank (7) is opened. A straight grained rice overflow port (98) is opened on the side wall surface (22a) between the hopper (3) and the straightened grain rice tank (7) on the side of the starting point of flow down, and between these input ports (97) and overflow ports (98). A baffle plate (98) is provided on the lower flow surface (7a) of the tank, and when the inside of the tank (7) is full and the unpolished rice overflows from the overflow port (98), the overflow passage (10
It is configured to be returned to the hopper (3) below this via the (0).

Further, as shown in FIG. 10, a sealing member (for sealing the gap between the bottom surfaces of the upper and lower discs (17) and (18) is formed at the inner bent edge of the scrap rice and the smoothed rice gutter (69) (70). 101) is fixed so that the scrap rice and the smoothed rice in each gutter (69) (70) are prevented from spilling inward.

The lower end of the sorting cylinder (4) has a lower receiving member (19).
The outer peripheral rim portion (19b) is formed so as to extend downward from the lower surface by a dimension (t), and when the sorting cylinder (4) rotates, the receiving member (19).
It is configured to prevent the straightened rice blown off by the arm portion (19c) of the above from scattering inside the scrap rice gutter (69) in the vicinity.

The present embodiment is configured as described above, and the brown rice fed into the brown rice receiving hopper (3) through either the feeding port (2a) or (2b) is fed into the sorting cylinder (4). After the scrap rice is separated and removed by the sorting cylinder (4), it is fried in a grain-adjusted rice tank (7) via a fried conveyor (6) and appropriately taken out of the machine.

Thus, during the revolution and rotation of the sorting cylinder (4), the centrifugal force of the revolution promotes the leakage of waste rice from the mesh (90), and in the direction of revolution (a). The brown rice is agitated in the tube (4) in a uniform distribution state by the counter-rotating stirring action to further promote the separation of the scrap rice, and the brown rice is allowed to flow well while rotating along the inner peripheral surface of the tube (4). The processing capacity is improved.

Further, even when the orbital speed of the sorting cylinder (4) is changed to a high or low speed to adjust the sorting accuracy, the speed ratio between the revolution speed and the rotation speed is always constant, so the sorting cylinder (4) There is no inconvenience that brown rice sticks to the outside of the inner peripheral surface or the downward flow is promoted more than a predetermined amount, and the work can always be performed in a state where a good balance between the sorting accuracy and the processing capacity is maintained.

Further, the scrap rice fried grain screw conveyor (53) is directly linked to the motor (32) via the disc friction wheel type continuously variable transmission mechanism (57) and separately from the drive transmission system of the sorting section (91). Since they are connected, they can be installed side by side and close to the motor (32) to be compactly incorporated, and since the speed change width is small, the generation of broken rice by the screw conveyor (53) can be prevented.

Furthermore, the rotational driving force from the motor (32) is successively transferred to the screw conveyor (53). Lifting conveyor (6). The structure is such that it is transmitted to the low speed side with the sorting unit (91), and the conveyors (6) and (53) are juxtaposed side by side on the left side of the sorting unit (91), so that the entire drive system is small and compact. And the functionality can be further improved.

On the other hand, the inlets (2a) and (2b) are provided on the right side surface and the rear side surface of the machine body, and since both facing surfaces have a closed structure, the other opening (2a) or (2b) is used when either one is used. Even if it is not closed with a cover or the like, brown rice does not scatter and can be used conveniently.

Further, as shown in FIG. 2 to FIG. 4, by removing the front and rear side covers (102a) (102b) approximately in the middle of the front and rear sides of the machine body, the sorting section (91) and the fried conveyor (6) on the front side are removed. ), And on the rear side, it can be opened across both the sorting section (91) and the screw conveyor (53), and simultaneous inspection of both can be made possible.

"Effects of the Invention" As is clear from the above examples, according to the present invention, a rotary sorting cylinder (4) for separating and removing scrap grains from the fried grain is vertically provided, and the sorting cylinder (4) is provided. In a planetary sorting structure in which each of the sorting cylinders (4) is caused to rotate during its revolution movement, a speed change mechanism (37) is incorporated into the drive system of the main shaft (10) for revolving and rotating the sorting cylinders (4). Since the revolution and rotation speeds of the selection cylinder (4) are changed while the speed ratio of the revolution and rotation speed of the selection cylinder (4) is kept constant, the revolution speed of the selection cylinder (4) for adjusting the selection accuracy is changed. At any given time, the rotation speed also changes in a state that is always in balance with this, and it is possible to obtain a proper amount of good quality grains, which makes it possible to perform the optimal sorting work in terms of both sorting accuracy and processing capacity. Play.

[Brief description of drawings]

1 is a side view of the drive unit, FIG. 2 is an overall front view,
FIG. 3 is a side view of the same, FIG. 4 is a rear view of the same, FIG. 5 is an explanatory view of a sorting section, FIG. 6 is an explanatory view of a sorting and feeding section, FIG. 7 is an explanatory view of the same plane, and FIG. FIG. 9 is a plan view of the sorting section, FIG. 9 is a plan view of the driving section, FIG. 10 is a partial explanatory view of the sorting gutter section, and FIG.
Figure is a side view of the conveyor section, Figure 12 is a partial view of the same,
FIG. 13 is a perspective view of the tank portion. (4) …… Selection cylinder (10) …… Spindle (37) …… Transmission mechanism

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Chiaki Kadota 1-32, Chayamachi, Kita-ku, Osaka City, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (72) Inventor, Eiichi Okamoto 1-32, Chayamachi, Kita-ku, Osaka City, Osaka Prefecture No. Yanmar Agricultural Machinery Co., Ltd.

Claims (1)

(57) [Claims] 1. A planetary sorting structure in which a rotary sorting cylinder adapted to separate and remove scrap grains from the grain is provided vertically, and the sorting cylinders are caused to rotate while revolving the sorting cylinder. In the above, a speed change mechanism is incorporated in a drive system of a main shaft for revolving and rotating the selection cylinder, and the revolution and rotation speeds of the selection cylinder are changed while maintaining a constant speed ratio of revolution and rotation speed. A grain selection device.