JPH0157635B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a huller sorting system in which paddy is removed in a huller, the rice husks are air-sorted in a wind sorter, and then only brown rice is sorted and taken out. It is related to the device.

[Conventional technology]

Conventionally, this type of huller sorting equipment often used a swinging sorting mechanism to sort brown rice.
This oscillating sorting mechanism has drawbacks such as being large and generating large vibrations and noise, so Japanese Patent Application Laid-Open No. 49-24745 as a prior art
We propose to use a rotary sorting mechanism consisting of a brown rice catcher installed in a horizontal rotary sorting cylinder with a number of recesses formed on the inner circumferential surface to sort brown rice from the mixed rice that has been removed. There is.

[Problem that the invention seeks to solve]

However, in the hulling and sorting device described in this publication, mixed rice is supplied to one end of the sorting cylinder in the rotary sorting mechanism close to the hulling part, and the other end of the sorting cylinder is used as the paddy discharge side. The paddy discharged from the discharge side is transferred through a transfer means installed outside the sorting cylinder.
Since the flow is refluxed to the hulling section for re-evacuation, the overall size of the hulling and sorting device is such that the transfer means for refluxing and transporting the discharged paddy from the sorting barrel to the hulling section is connected to the outside of the sorting barrel. In other words, there was a drawback that the rice hulling sorting device became large in size.

On the other hand, in this type of rotary sorting mechanism, the mixed rice supplied into the sorting cylinder is scraped up to a certain height by the rotation of the sorting cylinder, and then falls to the bottom, forming a fluidized bed. However, as the mixed rice moves to the discharge side, the brown rice of the mixed rice fits into the recess and is lifted up to a high position and then falls. Using the motion of falling from a low position, the brown rice falling from a high position is caught in the brown rice receiving gutter and taken out, but in this case, even if it is the same brown rice, depending on the grain, it may fall into the recess. Because the degree to which the paddy fits together differs depending on the size, moisture content, etc., some of the brown rice falls at a relatively low position, whereas a very small portion of the paddy is lifted up to a relatively high position. The waste will get mixed into the brown rice receiving trough. Therefore, in order to reduce the number of paddy that enters the brown rice receiving trough and improve the sorting accuracy of brown rice, it is a good idea to reduce the frequency of paddy that fits into the recesses in the sorting barrel, and to reduce the number of paddy that fit into the recesses in the sorting barrel. In order to reduce the frequency of whole paddy, it is necessary to reduce the proportion of paddy contained in the mixed rice flowing as described above in the sorting barrel.

However, the rotary sorting mechanism in the prior art hulling and sorting device supplies the mixed rice after hulling into the supply side at the other end of the sorting cylinder, and discharges it from the discharge side at one end of the sorting cylinder. Since the brown rice from this mixed rice is raked up into the brown rice receiving trough and dropped, the proportion of paddy contained in the mixed rice in the sorting barrel is the same as the brown rice in the mixed rice raked up into the brown rice receiving trough. It tends to get higher as it falls. In other words, since the amount of paddy in the mixed rice flowing in the sorting barrel is large, the frequency of paddy getting stuck in the recesses on the inner surface of the sorting barrel increases, and this prevents brown rice from fitting into the recesses. Therefore, the number of paddy entering the brown rice receiving trough increases, and the accuracy of sorting brown rice decreases, as well as the sorting ability.

The present invention provides a hulling sorting device using a rotary sorting mechanism for sorting brown rice from mixed rice after hulling, in which a brown rice receiving trough is installed in the sorting barrel of the rotary sorting mechanism in parallel with the brown rice receiving trough. By installing a mixed rice receiving trough and allowing some of the paddy lifted to a relatively high position to enter this mixed rice receiving trough as described above, sorting accuracy and sorting ability can be improved. By using the mixed rice receiving trough as a transfer means for transferring the mixed rice after hulling to the supply side of the sorting cylinder, it is possible to avoid increasing the size of the hulling and sorting device.

[Means for solving problems]

For this reason, the present invention provides a wind sorting section for the mixed rice from the hulling section at the lower part of the hulling section, while
A rotary sorting mechanism is equipped with a brown rice receiving trough extending in the axial direction of the rotary sorting barrel, which has a plurality of concave portions formed on its inner peripheral surface on the side of the hulling section. A rice hulling sorter, which is arranged such that one end of the barrel is located on the hulling section side, and one end of the sorting barrel in the rotary sorting mechanism is configured as a discharge side, and the other end of the sorting barrel is configured as a supply side. In the apparatus, the discharge side of one end of the sorting cylinder in the rotary sorting mechanism is communicated with the paddy supply point in the hulling section, and the sorting cylinder in the rotary sorting mechanism includes:
A mixed rice receiving gutter is provided substantially parallel to the brown rice receiving gutter at a portion of the sorting cylinder on the mixed rice scraping side with respect to the brown rice receiving gutter, and a discharge port on the other end side of the sorting cylinder in the mixed rice receiving gutter. is shown into the supply side of the sorting cylinder, while a means for transporting the mixed rice after the rice husks have been sorted in the wind sorting part is shown in the inflow part located on one end side of the sorting cylinder in the mixed rice receiving trough. It is structured as follows.

[Effect]

In this configuration, the paddy supplied to the huller is dehulled in the huller, and the mixed rice after the dehulling is sorted and removed from the chaff in the wind sorting part, and then transferred to the sorting barrel of the rotary sorting mechanism. The mixed rice enters the inlet at one end of the mixed rice receiving trough, is sent into the supply side at the other end of the sorting cylinder by the mixed rice receiving trough, is scraped up to a certain height by the rotation of the sorting cylinder, and is then scraped up to the bottom. As it moves to the discharge side while repeatedly falling down and forming a fluidized bed, the brown rice is lifted up to a relatively high position while being stuck in the recess on the inner surface of the sorting cylinder, and is placed in the brown rice receiving trough. However, since the mixed rice receiving gutter is closer to the side where the mixed rice is raked up in the sorting barrel than the brown rice receiving gutter, some paddy along with the brown rice is contained in the mixed rice receiving gutter. enters.

However, the proportion of paddy that enters the mixed rice receiving trough as the sorting barrel rotates in this way is considerably higher than the proportion of paddy in the mixed rice that enters the inflow section of the mixed rice receiving trough from the hulling section. Since the grain size is small, the proportion of paddy in the mixed rice supplied from the huller into the mixed rice receiving trough is diluted and lowered by the brown rice that enters the mixed rice receiving trough as the sorting cylinder rotates. Therefore, the proportion of paddy in the mixed rice flowing in the sorting barrel is also lower than when the mixed rice receiving trough is not used.

Therefore, the frequency of paddy fitting into the large number of recesses on the inner surface of the sorting barrel decreases, and the number of brown rice fitting into the recesses increases accordingly, and accordingly, the number of paddy entering the brown rice receiving trough also decreases. The number of brown rice increases over time.

On the other hand, as the mixed rice in the sorting barrel is transferred to the discharge side of the sorting barrel, the amount of paddy increases, and from the discharge side of the sorting barrel, the rice is reflux-supplied to the hulling section and de-manipulated again. be.

〔Effect of the invention〕

As described above, according to the present invention, by arranging the mixed rice receiving trough in parallel with the brown rice receiving trough in the sorting barrel of the rotary sorting mechanism, the number of brown rice that fits into the many recesses on the inner surface of the sorting barrel can be reduced. Not only can the accuracy of sorting brown rice be significantly improved, but also the sorting capacity can be increased.

Moreover, in the present invention, one end of the rotary sorting drum of the rotary sorting mechanism that is close to the hulling section is set as the discharge side, and the mixed rice from the wind sorting section after hulling is placed in the sorting barrel as described above. Since the mixed rice receiving gutter is used to transfer and supply rice into the supply side at the other end of the sorting cylinder, the mixed rice receiving gutter has the effect of reducing the proportion of paddy in the mixed rice from the hulling section. It simultaneously performs the function of transferring the mixed rice to the supply side of the sorting cylinder, and there is no need to separately provide a transfer means for transferring grains outside the sorting cylinder as in the prior art. Therefore, it is possible to avoid increasing the size of the entire hulling and sorting device that uses a rotary sorting mechanism for sorting brown rice, and it is possible to reduce the weight of the hulling and sorting device.

〔Example〕

Next, an embodiment of the present invention will be described in which a two-stage rotary sorting mechanism is used as the rotary sorting mechanism. The sorting device A is entirely composed of a wind sorting section B which is a rectangular box, a hulling section C mounted on the top surface of the wind sorting section B, and a two-stage rotary sorting mechanism D. ing.

In the wind sorting section B, a mixed rice conveyor 1 configured to serve as a mixed rice thrower shaft and a brown rice conveyor 2 configured to serve as a brown rice thrower shaft are installed side by side. The brown rice conveyor 2 is disposed at the bottom of the winnowing chamber 3 for the scraped rice removed in section C, and the brown rice conveyor 2 is disposed at the bottom of the winnowing chamber 4 for the finished brown rice. A suction dust extractor 5 is provided at one end in the longitudinal direction of the wind selection unit B, and atmospheric suction ports 6 and 6' are provided at the other end and the top surface, respectively, and air is drawn into the wind selection device B from the atmospheric suction ports 6 and 6'. The introduced wind passes through the wind selection chamber 4 and small rice wind selection chamber 30 for the finished brown rice, and the wind selection room 3 for the fallen rice, and is then sucked into the suction dust extractor 5.

A mixed rice thrower 7 as a mixed rice transfer means that communicates with the mixed rice conveyor 1 and a brown rice thrower 8 that communicates with the brown rice conveyor 2 are provided on the side surface of the wind sorting section B. Sliding part C
is equipped with a paddy supply hopper 10 and a pair of left and right unrollers 9, and below the unrollers 9, a winnowing chamber 3 for the scraped rice is seen.

The two-stage rotary sorting mechanism D includes a primary sorting cylinder and a secondary sorting cylinder horizontally disposed in upper and lower stages in a box-like case 12, and both sorting cylinders are rotatably supported and A large number of recesses 13 are formed on the inner surface of the recesses, each having a size large enough to fit brown rice. In this case, the recess 13 has an inner diameter of about 5 to
A hemispherical shape with a diameter of 6.5 mm and a depth of about 3 to 4 mm is suitable.

Further, the primary sorting cylinder and the secondary sorting cylinder are
Both ends thereof are open, and the axis thereof is perpendicular to the axis of the de-rolling 9, and both of these sorting cylinders are driven by a belt driven by a motor M provided in the wind sorting device B. It is rotationally driven in the right direction as shown by the arrow in FIG.

Inside both sorting cylinders, various types of receiving troughs such as brown rice receiving troughs are arranged so as to extend in the axial direction of the sorting cylinders. That is, in the primary sorting cylinder, a brown rice receiving gutter 18 having a spiral conveyor 14 therein is arranged such that both ends of the brown rice receiving gutter 18 are fixed to the box-shaped case 12, and this brown rice receiving gutter 18 is provided with a spiral conveyor 14 therein. On the left side of the gutter 18, that is, on the side where the mixed rice is scraped up in the primary sorting cylinder, there is a mixed rice receiving gutter 21 which also has a spiral conveyor 15 inside the brown rice receiving gutter 18.
It is arranged almost parallel to. On the other hand, inside the secondary sorting cylinder, there are a finished brown rice receiving trough 25 having a built-in spiral conveyor 16 and a small rice receiving trough 17 having a built-in spiral conveyor 27. It is arranged so as to be located on the scraping side of the brown rice.

The mixed rice supply tank 29 provided above one end of the box-shaped case 12 has an upper end outlet 7' of the mixed rice thrower 7, while the lower part of the tank 29 is connected to the mixed rice supply tank 29 provided above one end of the box-shaped case 12. Receiving gutter 2
1, and the discharge port 21' at the other end of the sorting cylinder of the mixed rice receiving trough 21 is opened into the supply side' at the other end of the primary sorting cylinder. , a chute 20 communicating with the paddy supply hopper 10 in the hulling section C is provided below the discharge side'' at one end of the primary sorting cylinder. communicates with the supply side' at the other end of the secondary sorting cylinder via 31;
A chute 23 communicating with the mixed rice conveyor 1 in the wind sorting section B is provided below the discharge side at one end of the secondary sorting cylinder, and a chute 24 is provided at one end of the finishing brown rice receiving trough 25 in the secondary sorting cylinder. It communicates with the finishing brown rice finishing chamber 4 in the wind sorting section B through a chute (not shown) which connects one end of the outlet of the millet receiving trough 17 in the secondary sorting cylinder to the milling rice sorting chamber 30 in the wind sorting section B. communicate via.

The brown rice receiving gutter 18, the mixed rice receiving gutter 21, the finished brown rice receiving gutter 25, and the small rice receiving gutter 17 are provided with regulating gate valves 19, 22, 26, 28 which are rotatably operated from the outside of the box-shaped case 12. Each is provided.

When paddy is supplied to the paddy supply hopper 10 during operation, the mixed rice removed by the huller C is removed by the wind flowing toward the suction dust remover 5 in the wind sorting chamber 3 for removed rice, and the rice husks are removed. After being removed, the mixed rice enters the mixed rice conveyor 1, and this mixed rice passes through the mixed rice thrower 7 and the mixed rice supply tank 29, and is sent to the mixed rice receiving gutter 21 in the primary sorting cylinder. It is supplied from the outlet 21' of the gutter 21 to the supply side' in the primary sorting cylinder.

The mixed rice thus supplied into the primary sorting cylinder is scraped up to a certain height by the rotation of the primary sorting cylinder in the right direction, and then falls to the bottom, forming a fluidized bed and passing through the primary sorting cylinder. It is transferred toward the discharge side of the sorting cylinder.

During this flow, the brown rice in the mixed rice is lifted up to a relatively high place while fitting into the recess 13 on the inner surface of the primary sorting cylinder.
The rice falls into both the mixed rice receiving gutter 21 and the brown rice receiving gutter 18. In this case, since the mixed rice receiving gutter 21 is located on the side of the brown rice receiving gutter 18 that scoops up the mixed rice in the primary sorting barrel, some paddy may enter the mixed rice receiving gutter 21 along with the brown rice. However, since the amount of paddy is small, the proportion of paddy in the mixed rice supplied from the mixed rice conveyor 1 to the mixed rice receiving trough 21 in the primary sorting cylinder is:
As described above, as the sorting cylinder rotates, the brown rice that enters the mixed rice receiving trough 21 is mixed and diluted to be lowered.

As mentioned above, after the brown rice is removed into the mixed rice receiving trough 21 and the brown rice receiving trough 18 in the primary sorting cylinder, the amount of paddy increases as it approaches the discharge side of the primary sorting cylinder. From there, the paddy is sent to the paddy supply hopper 10 via the chute 20, where it is removed again.

On the other hand, the brown rice that has entered the brown rice receiving trough 18 in the primary sorting cylinder is sent to the secondary sorting cylinder via the chute 31, where it is sorted again. That is,
The brown rice supplied into the secondary sorting cylinder flows in the same way as described above, and as it is being transferred to its discharge side, the brown rice enters the finished brown rice receiving trough 25 and the small rice enters the small rice receiving trough 17. After being sorted, the rice flows out from the discharge side through the chute 23 to the mixed rice conveyor 1, while the finished brown rice is transferred to the finished brown rice receiving trough 25.
The finished brown rice enters the brown rice conveyor 2 via the chute 24 and is then taken out of the machine from the brown rice thrower 8.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of the entire huller sorting machine, and FIG.
FIG. C...hulling section, B...wind sorting section, D...rotary sorting mechanism, sorting cylinder, 13...recess,'...
Supply side, ″...Discharge side, 18...Brown rice catcher, 2
1...Mixed rice receiving trough, 21'...Discharge port, 7...Mixed rice thrower as means for transferring mixed rice, 29...
Mixed rice supply tank.

Claims (1)

[Claims] 1. A rotary sorting cylinder is provided with a wind sorting section for the mixed rice from the hulling section at the lower part of the hulling section, and a rotary sorting drum having a number of recesses formed on the inner circumferential surface on the sides of the hulling section. A rotary sorting mechanism having a brown rice receiving trough extending in the axial direction thereof is disposed such that one end of the sorting barrel of the rotary sorting mechanism is located on the hulling section side, and In a hulling and sorting device in which one end of the sorting cylinder is configured as a discharge side and the other end of the sorting cylinder is configured as a supply side, the discharge side of one end of the sorting cylinder in the rotary sorting mechanism is configured as a side for supplying paddy in the hulling section. In the sorting barrel of the rotary sorting mechanism, a portion of the sorting barrel on the mixed rice scraping-up side with respect to the brown rice receiving gutter,
A mixed rice receiving trough is provided approximately parallel to the brown rice receiving trough, and the discharge port on the other end side of the sorting cylinder in the mixed rice receiving trough looks into the supply side of the sorting cylinder, while the sorting cylinder in the mixed rice receiving trough A rice hulling and sorting device characterized in that an inflow section located on one end side allows a means for transporting the mixed rice after the rice husks have been sorted in the wind sorting section to be seen.