JPH01111478A - Grain sorter - Google Patents

Abstract

PURPOSE: To improve sorting accuracy and treating capability by building a speed change mechanism into a drive system of a spindle for revolving and rotating a sorting cylinder and changing revolution and rotation speeds in the state of maintaining the speed ratio of the revolution and rotation speeds of the sorting cylinder constant. CONSTITUTION: The rotary sorting cylinder 4 adapted to separate and remove screenings from grains is installed perpendicularly. The sorting cylinder 4 is rotated during the revolution movement of the sorting cylinder 4. In the planetary type sorter constitution, the speed change mechanism 37 is built into the drive system of the spindle 10 to revolve and rotate the sorting cylinder 4 so that the revolution and rotation speeds thereof are changed in the state of maintaining the speed ratio of the revolution and rotation speeds of the sorting cylinder 4 constant. Namely, even at the time of changing the revolution speed of the sorting cylinder 4 in adjusting the sorting accuracy, the rotation speed changes to the state of balancing therewith at all times and an adequate quantity of the good-quality grains may be obtd. The optimum sorting work in terms of both of the sorting accuracy and the treating capability is thus executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a grain sorting device such as a rice sorter equipped with a vertical rotary sorting cylinder for separating and removing waste rice from brown rice, and The present invention relates to a planetary sorting structure in which the sorting tubes are caused to rotate on their own axis while the sorting tubes revolve.

``Prior Art'' An example of a structure in which a sorting cylinder of this type moves planetarily is disclosed in US Pat. No. 3,787,047.

``Problem to be solved by the invention'' However, in the conventional structure of this type, the rotation and revolution speeds are always constant, so when adjusting the sorting accuracy to high or low accuracy, it is necessary to adjust the mesh sorting cylinder as appropriate. It was a hassle to have to replace it every time, and it had a drawback that it was extremely poor in terms of work efficiency.

Therefore, the present invention incorporates a speed change mechanism into the drive system of the main shaft that revolves and rotates the sorting tube, and maintains a constant speed ratio between the revolution and rotation speeds of the sorting tube. It is configured to change the revolution and rotation speeds.

"Function" According to the present invention, when the revolution speed of the sorting cylinder is changed to a high speed, the separation and leakage of waste grains to the outside of the sorting cylinder is caused by the increase in the revolution centrifugal force. When aiming to improve the sorting accuracy by promoting the centrifugal force, the grains that stick to the centrifugal outer circumference of the sorting tube due to the increase in the orbital centrifugal force are removed by rotating at a rotational speed corresponding to the increase in the centrifugal force. By constantly stirring uniformly and promoting downward flow, it is possible to maintain a stable amount of high-quality grain taken out. Therefore, when adjusting the sorting accuracy, the revolving speed of the sorting cylinder changes between high and low speeds. However, the rotation speed always changes in a state that is in balance with this, so that the appropriate amount of high-quality grain corresponding to the sorting accuracy can always be obtained, and the sorting work can be performed optimally in terms of both sorting accuracy and processing capacity. It is.

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

Figure 1 is an explanatory diagram of the drive unit, Figure 2 is a front view of the whole, Figure 3
The figure is a side view of the same, and Figure 4 is a rear view of the same. In the figure, (1) is the rice sorting machine, (2a) and (2b) are the brown rice input ports located on the right and rear sides of the machine, and (3) is said input port (2a) (
brown rice receiving hopper receiving brown rice from 2b), (4).
... is a vertical sorting tube that separates and sorts waste rice such as immature rice and broken rice from the brown rice from the hopper (3), and (5) is a machine for separating and removing waste rice in the sorting tube (4)... A waste rice discharge port is taken out to the outside, (6) is a conveyor for frying brown rice that is sorted by the sorting cylinder (4), and (7) is a conveyor for frying the brown rice that has been sorted by the sorting cylinder (4). A grained brown rice tank for temporarily storing grained rice, a rice grain discharge port (8) for taking out the grained rice in the tank (7), and a shutter (8) for opening and closing the discharge port (8). , and the input port (2a
) (2b) Brown rice is fed into the sorting tube (4)...
When the rice is fed into the pipe, the waste rice is separated and removed on the outside of the mesh surface of the cylinder (4) by the rotating sieving action of the neck (4).

As shown in FIGS. 5 to 8, four sorting tubes (0... are provided at equal intervals around the main rotation axis (lO),
The upper end of the neck (4)... is sealed with a lid-shaped upper receiving member (11).
), bush (12), hollow support shaft (13), distribution plate (1
4) and the main axis (lO) via the upper coupling body (15)
The hexagonal shaft part (10a) is vertically slidable and rotates integrally (
The hexagonal shaft portion (10a
) supports the upper and lower disks (17) and (18) so as to be able to rotate together through the lower joint body (1B), and the lower end of the sorting cylinder (4) is attached to the lower disk (18) in a lower receiver. The member (1i9) and the hexagonal head (20a) of the rotation support shaft (20) and the support bearing (
21), each of which is rotatably (rotatably) supported.

The main shaft (lO) is attached to a holder (2) which is a main shaft boss on a base frame (23) fixed to a rectangular machine frame (22).
4), the lower end of which is rotatably supported, and the main shaft (12) is connected to a vertical transmission shaft (2B) provided in the motor chamber (25) at the bottom of the base frame (23) through reduction gears (27) and (28). It is linked together. In addition, the motor room (2
5) has a drive pulley (2) that drives the grain frying conveyor (6).
8), the pulley shaft (30) is supported by a holder (31), and a pair of deceleration V pulleys (33) are attached to the motor shaft (32a) of the drive motor (32). (34), the pulley shaft (30) is interlocked and connected via a V-belt (35) and a tension pulley (36), and the grain frying conveyor (8) is provided to rotate at a constant speed; The speed change shaft (28) is connected to the pulley shaft (30) via a disc friction wheel type continuously variable transmission mechanism (37).
) are interlocked and connected for variable speed adjustment. The speed change mechanism (37) includes a friction plate (38) that is vertically slidably attached to the hexagonal shaft portion (28a) of the speed change shaft (2B) and has a rubber surface (38a) on the outer periphery, and the pulley shaft (30). compression spring (
39) so that it can be slid left and right.
a disk (40) that causes the end surface (40a) to be pressed against the end surface (40a);
There is a bracket (42) on the bottom plate (41) of this rice sorter (1).
and the friction plate (38) attached via the support shaft (43).
The pin (45) and the engagement tJ (4
A sliding operation plate (47) is connected to the operation plate (47) via a connecting rod (48), and the base end is fixed to the operation plate (47) via a connecting rod (48), and the tip is attached to the outside of the lever guide plate (48) on the front of the fuselage. A gear change operation lever (50) facing the user, the operation lever (50)
0), by moving the friction plate (38) up and down along the hexagonal shaft (28a) of the speed change shaft (28), the rotation of the main shaft (10) can be adjusted as appropriate.

As shown in FIG. 9, the brown rice conditioning conveyor chamber (51) in which the grain frying conveyor (6) is installed is located on the left side of the motor chamber (25) via a single partition plate (52). A partition plate (
55), and the waste rice taken out at the bottom of the sorting cylinder (4) is lifted up to the discharge port (5) located at approximately the center height on the rear surface of the machine via the screw conveyor (53). It is designed to allow grain to be harvested and discharged outside the machine.

And the conveyor shaft (5) of the screw conveyor (53)
6) The lower end is interlocked and connected to the motor shaft (32a) via a disc friction wheel type continuously variable transmission mechanism (57), and the transmission mechanism (57) has a sleeve (58) at the lower end of the conveyor shaft (56). and a friction plate (61) that is vertically adjustable and has a rubber surface (81a) on the outer periphery and is compressed to the motor shaft (32a), and is mounted so as to be vertically adjustable via a mounting position adjustment collar (59) and a bolt (80). The rice sorting machine (1
) is in the solid line state in Figure 1 when shipped with 60H2 specifications, and 50F! In the case of the Z specification, the collar (53) is interposed between the friction plate (61) and the sleeve (58) and is moved to a position below the imaginary line in the figure, and the sorting transmission mechanism (37) It is configured to allow two-stage speed change with a small shift width, low and high speed.

Further, as shown in FIG. 10, a sun gear (64) is integrally fixed to the holder (24), and each of the support shafts (20)...
・Each planetary gear (65) integrally fixed to the sun gear (84) via the idle gear (6B)...
When the support shaft (20) revolves around the main shaft (10), each support shaft (84) (85) (8ft) is connected in a direction opposite to the revolution direction (a). Axis (2
0)... are respectively rotated so that the revolution direction (a) and the rotation direction (b) of the sorting cylinder (4) are opposite directions. Note that the idle gear (66) is connected to the lower disc (1
8) via a gear shaft (E18a).

And the rotational speed (n) of each sorting cylinder (4)...
is formed to be larger than the revolution speed (N) (n > N), and by making the rotation speed (n) larger than the revolution speed (N) and in the opposite direction, the cylinder is (4)
The brown rice that sticks to the outside of the inner periphery of the chain (4)
The configuration is such that the rotating action in the opposite direction causes uniform agitation and promotes downward flow, thereby improving both sorting accuracy and throughput.

Furthermore, as shown in FIGS. 8 and 10 to 11, waste rice discharge blades (
67) and brown rice discharging blades (6 days) are provided respectively, and these blades (87) ( 88)
The waste rice outlet (71) opened in the waste rice gutter (69) is connected to the screw conveyor (53) through the waste rice chute (72) and the opening (52a) of the partition plate (52). ) is connected to the waste rice inlet (74) provided in the conveyor tube (73), while the brown rice gutter (70)
) Open the brown rice outlet (75) at the bottom.
(7B) is connected to the unprocessed brown rice outlet (77) of the unpolished rice conveyor chamber (51), and the scrap rice taken out to the unloading outlet (71) is passed through the screw conveyor (53) to the left side of the machine. The rice is discharged outside the machine from the discharge port (5), and the grain-processed rice taken out from the take-out port (75) is fried into the grain-processed rice tank (7) via the grain-frying conveyor (6) as appropriate. It is configured to be taken out of the machine.

Further, as shown in FIGS. 8 and 11 and 12, the bearing plate (78) supporting the lower end of the conveyor shaft (5θ) on the conveyor tube (72) has a plurality of bran drop holes (73)... This hole (79
) ... to be dropped onto the bran removal shoe (80) below and taken out from the machine through the bran discharge port (81) on the rear side of the machine.

Furthermore, a cleaning opening (82) is opened on the left side of the machine near the lower end of the conveyor cylinder (73), and the chain (82) is connected to the bolt (
83), and open the inspection cover (8B) that closes the common inspection opening (85) of each conveyor chamber (51) (54) at the bottom of the left side of the machine. When the side cover (84) is opened, the side cover (84) can be opened.

Furthermore, a bolt (87) and a pair of backing plates (88a) (88b) are attached to the hexagonal shaft portion (10a) of the main shaft (10).
two urethane rubber plate scrapers (89
) (89) The intermediate part is fixedly installed, and both ends of these scrapers (88) and (89) are brought into sliding contact with the sorting surface having a large number of meshes (90) of the sorting cylinder (0...), and each scraper (89) (89) are rotated at the same time as the revolution of the sorting cylinder (4)..., and the working surface of each scraper (89) (89) is always kept in contact with the * (4)... When the mesh (90) is rotated, the stab grains clogging the mesh (90) are removed near the center of revolution where the centrifugal force of revolution is the weakest.

As shown in FIGS. 5 to 7, the distribution plate (14) is formed in a square shape, and each support shaft (13) is provided at the corner of the chain plate (14), and each sorting plate is Tube (4)...
- When the drive of the sorting section (91) is stopped, the angle of repose (α) of the brown rice remaining between the supply port (3a) of the hopper (3) and the upper flat surface of the distribution plate (14) is - It is provided so as to reliably prevent brown rice from flowing into the sorting cylinder (4) through the hollow input hole (13a) of the support shaft (13) by holding the support shaft (13). Further, a rubber elastic preventive body (32) for preventing brown rice from scattering is integrally fixed to the upper flat surface of the distribution plate (10), and a day tent pole ( 93) via a compression spring (94), and a lower notch (98a) that forms the pole (93) in the hexagonal shaft (10a).
When engaged with the sorting cylinder (4) as shown in the imaginary line in Figure 5,
The hexagonal hole (19a) of the lower support member (19) is connected to the support shaft (
20) is fitted and supported by the hexagonal head (20a) to carry out sorting work, while each sorting tube (4)
When the pawl (93) is brought into engagement with the upper notch (98b) formed on the hexagonal shaft (10a), the lower receiving member (18)
is removed from the hexagonal head (20a), and then the upper receiving member (11) is removed from each support shaft (13) by pushing down each sorting tube (4)... It is configured such that each sorting tube (4) is removed after the condition is maintained. In addition, during the upward movement operation of the distribution plate (14), even if the upper part of the preventer (82) contacts and interferes with the bottom of the hopper (3), the preventer (82) will not move as shown in the imaginary line in FIG. 92) is deformed so that the sorting cylinder (4) can be removed without any trouble.

Further, as shown in FIG. 13, the grain frying conveyor chamber (51
) The side wall surface (2) that partitions the upper rice grain tank (7)
In 2a), a brown rice tank input port (37) is provided to input the brown rice fried by the conveyor (6) into the tank (7), and the bottom flow surface (7a) of the tank (7) is opened. A brown rice overflow roller (9) is installed on the side wall surface (22a) between the hopper (3) and the brown rice tank (7) on the flow starting end side.
8), and a jammer plate (99) is interposed on the downstream surface (7a) between the inlet (97) and the overflow (98), so that the inside of the tank (7) is full. It is configured so that when the brown rice overflows from the overflow passage (98), it is returned to the hopper (3) below this through the overflow passage (100).

Furthermore, as shown in FIG. 10, upper and lower disks (1
7) A sealing member (18) that seals the gap between the bottom surface of
101) is fixed in place, and is configured to prevent the waste rice and unpolished rice in each machine (89) and (70) from spilling out inside these machines (89) and (70).

Further, the lower end of the sorting tube (4) is formed with a lower receiving member extending, and when the sorting tube (4) rotates, the receiving member (19)
It is configured to prevent the unpolished rice thrown away by the arm part (19c) from scattering inside the waste rice trough (68) located nearby.

This embodiment is configured as described above, and the brown rice input into the brown rice receiving hopper (3) from either the input port (2a) or (2b) is sent into the sorting tube (4). After the waste rice is separated and removed by the sorting tube (4), the grain is fried via the grain frying conveyor (8) into the unpolished rice tank (7) and taken out of the machine as appropriate.

During the revolution and rotation of the sorting cylinder (0), the leakage of waste rice from the mesh (90) is promoted by the centrifugal force during the revolution, and the waste rice is also accelerated in the direction of revolution (a). Due to the rotating stirring action, the brown rice is stirred in a uniformly distributed state within the cylinder (4), which further promotes the separation of waste rice. This improves processing capacity.

Furthermore, even when adjusting the sorting accuracy by changing the revolution speed of the sorting cylinder (4) to a high or low speed, the speed ratio between the revolution speed and the rotational speed is always constant, so that the sorting cylinder (4) The work can be carried out while always keeping a good balance between sorting accuracy and processing capacity without the inconvenience of brown rice sticking to the outside of the inner peripheral surface or promoting downward flow more than a predetermined amount.

Further, the scrap rice and fried grain screw conveyor (53) is connected to the sorting section (81) via a disc friction wheel type continuously variable transmission mechanism (57).
Since it is directly interlocked and connected to the motor (32) separately from the drive speed change system, it can be installed in parallel with and close to the motor (32) and can be compactly incorporated, and the speed change width is small, so the screw conveyor (53) This also prevents the occurrence of broken rice.

Furthermore, the rotational driving force from the motor (32) is sequentially transmitted to the screw conveyor (53), grain frying conveyor (6), 8 sorting section (91) and the low speed side, and the sorting section (91)
Since the conveyors (8) and (53) are arranged side by side on the left side of the conveyor belt, the overall drive system can be made smaller and more compact, and its functionality can be further improved.

On the other hand, the input ports (2a) and (2b) are provided on the right side and the rear side of the machine, and both opposing sides have a closed structure, so when one is used, the other port (2a) or (2b) is closed.
It can be conveniently used without the brown rice scattering even if it is not sealed with a cover or the like.

In addition, as shown in FIGS. 2 to 4, by removing the front and rear side covers (102a) (102b) located approximately in the middle of the front and rear sides of the machine, the sorting section (91) and the grain frying conveyor (6) on the front side can be removed. ), and on the rear side there is a sorting section (91
) and the screw conveyor (53), allowing simultaneous inspection of both.

"Effects of the Invention" As is clear from the above embodiments, the present invention has a rotary sorting tube (4) vertically arranged to separate and remove waste grains from grains, and the sorting tube (0). During the revolution, the sorting tube (4
) in a planetary sorting structure in which each of the sorting tubes (
10) A transmission mechanism (37) is incorporated into the drive system to change the revolution and rotation speeds of the sorting cylinder (4) while maintaining a constant speed ratio between the revolution and rotation speeds. The sorting cylinder that adjusts the rotation speed (even when changing the revolution speed of 0, the rotation speed always changes to be in balance with this, making it possible to obtain the appropriate amount of high-quality grains, improving both sorting accuracy and processing capacity. It has remarkable effects such as being able to carry out optimal sorting work.

[Brief explanation of the drawing]

Figure 1 is a side explanatory view of the drive unit, Figure 2 is a front view of the whole,
FIG. 3 is a side view of the same, FIG. 4 is a back view of the same, FIG. 5 is an explanatory view of the sorting section, FIG. 6 is an explanatory view of the sorting supply section, FIG. 7 is an explanatory plan view of the same, and FIG. 8 is an explanatory view of the same. FIG. 9 is a plan view of the sorting section, FIG. 9 is a plan view of the drive section, FIG. 10 is a partial explanatory view of the sorting machine section, FIG. 11 is a side view of the conveyor section, FIG. 12 is a partial explanatory view of the same, FIG. 13 is a perspective explanatory view of the tank section. (4)... Sorting tube (10)... Main shaft (37)...
Transmission mechanism applicant: Yanmar Jushiki Co., Ltd. Figure 13

Claims (1)

[Claims] In the planetary sorting structure, the sorting tubes are vertically provided with rotary sorting tubes for separating and removing waste grains from grains, and each of the sorting tubes is rotated on its own axis while the sorting tubes revolve. The grain is characterized in that a speed change mechanism is incorporated into the drive system of the main shaft that revolves and rotates the grain, and the revolution and rotation speeds of the sorting cylinder are changed while maintaining a constant speed ratio between the revolution and rotation speeds. Grain sorting equipment.