JPS62269783A - Rice-hulling selector - 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] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention involves dehulling paddy in a hulling section, wind sorting the rice husks in a wind sorting section, and then sorting only brown rice. The present invention relates to a rice husking sorting device that removes the hulled rice by removing it.

[Conventional technology]

Conventionally, this type of hulling sorting equipment has often adopted a swinging sorting mechanism for sorting brown rice, but this swinging sorting mechanism is large and generates a lot of vibration and noise. Because it has the following drawbacks, JP-A No. 4
Publication No. 9-24745 discloses that a brown rice catcher with an open top is installed in a horizontal rotary sorting barrel with a number of concave portions formed on the inner circumferential surface for sorting brown rice from mixed rice after culmming. It is proposed to use a rotary sorting mechanism consisting of:

[Problem that the invention seeks to solve]

However, in the hulling and sorting device described in this prior art publication, mixed rice is supplied to one end of the sorting cylinder close to the hulling part of the rotary sorting mechanism, and the other end of the sorting cylinder is connected to the paddy discharge side. The paddy discharged from the discharge side is returned to the hulling section through a transfer means disposed on the outside of the sorting cylinder to be re-hulled, so that the entire hulling and sorting device is The size of the husking cylinder becomes larger due to the fact that the transfer means for recirculating and transporting the discharged paddy from the discharge side of the sorting cylinder to the hulling section is disposed outside the sorting cylinder.In other words, the hulling sorting device becomes larger. There was a drawback.

On the other hand, in this type of rotary sorting mechanism, the mixed rice supplied into the sorting barrel is scraped up to a height created by the rotation of the sorting barrel, and then falls to the bottom, forming a fluidized bed while the rice is discharged from the discharge side. During the process of moving the mixed rice, the brown rice of the mixed rice fits into the recess and is lifted up to a high position, and then falls, and some of the paddy of the mixed rice fits into the recess but falls from a lower position than the brown rice. Using this movement, the brown rice that falls from a high position is caught in the brown rice catcher and taken out. This varies depending on the moisture content, etc., so some of the brown rice may fall at a relatively low level, whereas a small portion of the paddy is lifted up to a relatively high level and placed in the brown rice receiving trough. It will be mixed in. Therefore, in order to improve the accuracy of sorting brown rice by reducing the number of rice grains that enter the brown rice receiving trough, it is a good idea to reduce the frequency of rice grains that fit into the recesses in the sorting barrel as much as possible.

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 scooped up and dropped into the brown rice receiving trough, the proportion of paddy contained in the mixed rice in the sorting barrel is determined by the proportion of paddy contained in the mixed rice that is sown into the brown rice receiving trough. It tends to become higher as it is raised and lowered. In other words, since the amount of rice in the mixed rice flowing in the sorting barrel is large, the frequency of rice fitting into the recesses on the inner surface of the sorting cylinder increases, and this prevents brown rice from fitting into the recesses.

Moreover, in the rotary sorting mechanism of the prior art, the mixed rice after the culm is dropped from a relatively high position onto a wide part of the inner peripheral surface on the supply side at one end of the sorting cylinder. The mixed rice falls with considerable force onto the inner surface of the sorting cylinder where a fluidized bed of mixed rice is not formed, and falls from a high position onto the inner circumferential surface of the sorting cylinder. Because the rice is scattered over a wide area due to collisions caused by collisions, rotational movement of the sorting cylinder, etc., and does not immediately form a fluidized bed, the frequency at which rice gets stuck in the recesses increases, which in turn prevents brown rice from fitting into the recesses. This, together with the high proportion of paddy contained in the mixed rice in the sorting barrel as described above, reduces the accuracy of sorting brown rice and also reduces the ability to sort brown rice. It was.

An object of the present invention is to provide a rice hulling sorting device that solves these problems.

[Means for solving problems]

Therefore, in the present invention, a wind sorting section for the mixed rice from the hulling section is provided at the lower part of the hulling section, and a large number of recesses are formed on the inner circumferential surface on the sides of the hulling section. A rotary sorting mechanism including a brown rice receiving trough with an open top surface extending in the axial direction within a rotary sorting barrel is arranged such that one end of the sorting barrel in the rotary sorting mechanism is located on the hulling section side. one end of the sorting cylinder in the rotary sorting mechanism is configured as a discharge side, and the other end of the sorting cylinder in the rotary sorting mechanism is configured as a supply side, and the discharge side of the sorting cylinder in the rotary sorting mechanism is configured as a side in the hulling section. In the hulling and sorting device that communicates with the paddy supply point, the sorting barrel of the rotary sorting mechanism includes a top-open type on the side of the sorting barrel that scrapes up mixed rice with respect to the brown rice receiving trough. A mixed rice receiving gutter is provided substantially parallel to the brown rice receiving gutter, and a supply port provided on the supply side of the sorting cylinder in the mixed rice receiving gutter is connected to the sorting cylinder.

The mixed rice receiving trough has a downward opening in the feed side that is substantially perpendicular to the axis of the sorting cylinder, and a portion of the mixed rice receiving trough located on the discharge side of the sorting cylinder that transfers the mixed rice after the rice husks have been sorted in the wind sorting section. In addition, the supply port of the mixed rice receiving trough is located near the lower end of the mixed rice fluidized bed in the sorting barrel and at a lower height.

[Action/effect of the invention]

In this configuration, the rice supplied to the huller is deculled in the huller, and the mixed rice after this dehulling is separated from the rice husks in the wind sorting part, and then transferred to the sorting barrel of the rotary sorting mechanism. The mixed rice enters one end of the mixed rice receiving trough in the rice receiving trough, is sent to the supply port in the mixed rice receiving trough, and is then dropped and supplied from the supply port into the supply side of the sorting cylinder.

The mixed rice thus supplied into the sorting cylinder is scraped up to a height by the rotation of the sorting cylinder, and then falls to the bottom repeatedly, forming a fluidized bed as it moves to the discharge side. The brown rice that has been lifted up to a relatively high position while being fitted into the recess on the inner surface of the sorting barrel enters both the brown rice receiving gutter and the mixed rice receiving gutter. Since it is closer to the raking side of the mixed rice in the sorting barrel than the gutter, a small amount of paddy enters the mixed rice receiving gutter together with the brown rice.

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 part of the mixed rice receiving trough from the hulling section. Since it is small, the proportion of paddy in the mixed rice supplied from the huller into this 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 will also be lower than when the mixed rice receiving trough is not used, and as a result, the frequency of paddy fitting into the many recesses on the inner surface of the sorting barrel will decrease. As this decreases, the number of brown rice that fits into the recess increases accordingly, and accordingly, the number of paddy that enters the brown rice receiving trough also decreases, resulting in a large number of brown rice.

In addition, by locating the supply port from the mixed rice receiving trough to the sorting barrel near the lower end of the mixed rice fluidized bed in the sorting barrel and at a lower height, the rice is supplied into the sorting barrel. The mixed rice flows into the mixed rice fluidized bed formed in the sorting cylinder near the lower end and immediately forms a fluidized bed, while the supplied mixed rice flows from a low position relative to the fluidized bed. Since it is possible to reduce the spread of the fluidized bed due to falling supply, this supplied mixed rice is scattered widely by falling supply from a relatively high position to a place where a fluidized bed is not formed as in the prior art. As a result, 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. The number of paddy that goes in decreases, and the number of brown rice increases.

Furthermore, a supply port from the mixed rice receiving trough to the sorting barrel,
By opening the opening into the supply side of the sorting cylinder facing downwards at approximately perpendicular to the axis of the sorting cylinder, mixed rice can be fed to one end of the supply side of the sorting cylinder, making the entire length of the sorting cylinder effective for sorting. It can be used.

Moreover, one end of the rotary sorting barrel of the rotary sorting mechanism that is close to the hulling section is set as the discharge side, while the mixed rice from the wind sorting section after hulling is transferred to the mixed rice located in the sorting barrel as described above. By transferring and supplying the rice into the supply side of the sorting barrel through the receiving trough, the mixed rice receiving trough functions to reduce the proportion of paddy in the mixed rice from the hulling section, and also to sort the mixed rice. Since the function of transferring grains to the supply side of the barrel is performed at the same time, it is possible to omit providing a separate transfer means for transferring grains outside the sorting barrel as in the prior art.

Therefore, according to the present invention, the proportion of paddy in the mixed rice in the sorting barrel can be lowered as described above, and the mixed rice can be prevented from scattering over a wide area when feeding the mixed rice into the sorting barrel as described above. Combined with the ability to prevent
Since it is possible to synergistically increase the number of brown rice that fits into the multiple recesses on the inner surface of the sorting barrel, not only can the sorting accuracy of brown rice be significantly improved, but in addition to the above, the entire length of the sorting barrel can be sorted. By being able to use it effectively, it is possible to significantly improve the sorting ability of brown rice, and in addition, as described above, the mixed rice catcher has the effect of reducing the proportion of paddy in the mixed rice from the hulling section. In addition to carrying out the function of transferring mixed rice at the same time, it is possible to omit the provision of a separate transfer means for transferring grains as in the prior art, so that it is possible to perform hulling sorting using a rotary sorting mechanism. This has the effect that it is possible to avoid increasing the size of the entire device and to reduce the weight of the hulling and sorting device.

〔Example〕

Next, an embodiment of the present invention will be explained with reference to the drawings. Fig. 1 shows a longitudinal sectional front view of the entire hulling and sorting device A. , the hulling section C mounted on the upper surface of the wind sorting section B, and a two-stage rotary sorting mechanism.

In the wind sorting section B, a mixed rice conveyor 1 configured to double as a mixed rice thrower shaft and a brown rice conveyor 2 configured to double as a brown rice thrower shaft are installed side by side, and the mixed rice conveyor 1 is configured to function as a brown rice thrower shaft. The brown rice conveyor 2 is disposed at the bottom of the winnowing chamber 3 for mixed rice grained in the hulling section C, and the brown rice conveyor 2 is installed at the bottom of the winnowing chamber 4 for finished brown rice.

A suction dust extractor 5 is provided at one end in the longitudinal direction of the wind selection section B, and atmospheric suction ports 6 and 6' are provided at the other end and the top surface, respectively. The wind introduced in
After passing through the wind selection chamber 4 for the finished brown rice and the wind selection room 30 for small rice, and the wind selection room 3 for the fallen rice, it is sucked into a suction dust extractor 5.

On the side surface of the wind sorting section B, there are a mixed rice thrower 7, which is an embodiment of the mixed rice transfer means, which communicates with the mixed rice conveyor 1, and a brown rice thrower 8, which communicates with the brown rice conveyor 2. Further, the hulling section C includes a paddy supply hopper 10 and a pair of left and right deculling rolls 9, and below the deculling rolls 9, a winnowing chamber 3 for the mixed rice is provided. There is.

The two-stage rotary sorting mechanism comprises a primary sorting cylinder I and a secondary sorting cylinder (2) horizontally disposed in two upper and lower stages inside a box-shaped case 12, and both sorting cylinders I and (2) are rotatable. In addition to being supported, a large number of recesses 13 large enough to fit brown rice are formed on its inner surface. In this case, it is appropriate that the recess 13 has a hemispherical shape with an inner diameter of approximately 5 to 6 degrees and a depth of approximately 3 to 4 fi.

Also, the above-mentioned - next sorting cylinder! and the secondary sorting cylinder 1 are open at both ends, and their axes are perpendicular to the axis of the culling roll 9;
．． n is rotationally driven in the right direction at an appropriate speed as shown by the arrow in FIG. 2 by a belt transmission from a motor M provided in the wind sorting section B, and One end farther from the sliding part C is the supply side 1', If'
The other end portions near the hulling portion C are configured as discharge sides I'' and ■'', respectively.

In both the sorting cylinders (1) and (2), various 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 secondary sorting cylinder I, there is an open-top brown rice receiving trough 18 having a spiral conveyor 14 therein.
A spiral conveyor 15 is disposed so that both ends thereof are fixed to the box-like case 12, and a spiral conveyor 15 is installed inside the brown rice receiving trough 18 on the left side, that is, on the side where mixed rice is scooped up inside the primary sorting cylinder. A mixed rice receiving trough 21 having an open top surface is disposed substantially parallel to the brown rice receiving trough 18.

On the other hand, inside the secondary sorting cylinder (2), there are a finished brown rice receiving trough 25 of an open top type with a built-in spiral conveyor 16 and a small rice receiving trough 17 of an open top type with a built-in cap conveyor 27. The gutter 25 is arranged so as to be located on the left side, that is, on the side where brown rice is scraped up inside the secondary sorting cylinder.

A mixed rice supply tank 29 provided above one end of the box-shaped case 12 allows the upper end outlet of the mixed rice thrower 7 to be seen, 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. It communicates with the rice receiving gutter 21 at the discharge side ■'', while the supply side I' of the sorting cylinder I in the mixed rice receiving gutter 21 has a supply port 2 for mixed rice into the next sorting cylinder ■.
1' is provided facing downward at approximately right angles to the axis of the sorting cylinder (2), and this supply port 21' is located near the lower end of the fluidized bed S of mixed rice in the secondary sorting cylinder (2) and in the vicinity of the lower end thereof. It opens so as to look into a region at a lower height than the fluidized bed S.

Further, below the discharge side ■'' of the secondary sorting cylinder I, there is a shear 1 that communicates with the paddy supply hopper 10 in the hulling section C.
-20 is provided, the outlet on the other end side of the brown rice receiving trough 18 in the secondary sorting cylinder I is communicated with the supply side ■' of the secondary sorting cylinder I through a chute 31, and the secondary sorting cylinder ■
A chute 23 communicating with the mixed rice conveyor 1 in the wind sorting section B is provided below the discharge side
One end outlet of the finished brown rice receiving trough 25 in the secondary sorting cylinder ■ is communicated with the finishing brown rice selection chamber 4 in the wind sorting section B through the chute 24, and the small rice receiving trough 25 in the secondary sorting cylinder One end of the outlet 17 is communicated with the Xiaomi wind selection chamber 30 in the wind selection section B through a chute (not shown).

Furthermore, the opening width dimension along the circumferential direction of the sorting cylinder (2) in the brown rice receiving gutter 18 is the opening width dimension along the circumferential direction of the sorting cylinder (2) in the mixed rice receiving gutter 21! It is constructed with wider dimensions.

In addition, 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, 2 which are rotatably operated from the outside of the box-shaped case 12.
8 are provided respectively.

Therefore, when paddy is supplied to the paddy supply hopper 10 during operation, the mixed rice deculled in the hulling section C is husked by the wind flowing toward the suction dust remover 5 in the wind sorting chamber 3 for the mixed rice. After being removed, it enters the mixed rice conveyor 1, and this °
Mixed rice is supplied to mixed rice thrower 7 and mixed rice supply tank 2.
9, the mixed rice enters one end of the mixed rice receiving trough 21 in the primary sorting cylinder I, is transferred to the supply side I' in the mixed rice receiving trough 21, and is then transferred from the supply port 21' to the supply side in the primary sorting cylinder II. ■Supplied to '.

In this way, the mixed rice fed into the secondary sorting cylinder I is
- The flow is repeatedly scraped up to the height created by the rightward rotation of the secondary sorting cylinder I and then falls to the bottom, forming a fluidized bed S while being transferred toward the discharge side I'' of the primary sorting cylinder I. .

During this flow, the brown rice in the mixed rice is lifted up to a relatively high place while being fitted into the recess 13 on the inner surface of the sorting cylinder I, and then falls from the recess 13 to the mixed rice receiving trough. 21 and brown rice receiving channel 18. In this case, the mixed rice receiving trough 21 is located on the side of the brown rice receiving trough 18 in which the mixed rice is raked up in the primary sorting cylinder I, so some paddy enters the mixed rice receiving trough 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 I is as follows. As the brown rice enters the mixed rice receiving trough 21 as it rotates, it will be lowered by mixing and dilution.
The frequency of brown rice that falls under 3 increases, and the accuracy and ability of sorting brown rice can be improved.

As mentioned above, the mixed rice after being removed to the mixed rice receiving trough 21 and the brown rice receiving trough 18 in the primary sorting cylinder 1 becomes more paddy as it approaches the discharge side ``. The paddy is sent to the chaff supply hopper 10 through the chute 20 from the discharge side (■), where it is subjected to the deculling action again.

In this case, whether the opening width dimension in the circumferential direction of the sorting cylinder I in the brown rice receiving gutter 18 is equal to the opening width dimension l in the circumferential direction of the sorting cylinder I in the mixed rice receiving gutter 21, or the mixed rice receiving gutter 21 When the opening width dimension l is larger than the opening width dimension of the brown rice receiving gutter 18, the frequency of brown rice that fits into the recess 13 can be increased as described above.
A considerable amount of brown rice enters the mixed rice receiving channel 21σ, and not only is it impossible to increase the amount of brown rice that enters the brown rice receiving channel 18,
The amount of brown rice contained in the paddy discharged from the discharge side ■'' of the sorting barrel ■ will increase.

On the other hand, as in the above embodiment, the opening width dimension in the circumferential direction of the sorting cylinder I in the brown rice receiving trough 18 is set from the opening width dimension l in the circumferential direction of the sorting cylinder I in the mixed rice receiving trough 21. If the structure is made larger, less of the brown rice that fits into the large number of recesses 13 will enter the mixed rice receiving channel 21, and the brown rice that will enter the brown rice receiving channel 18 will be in a state where no paddy enters the brown rice receiving channel 18. At the same time, it is possible to reduce the amount of brown rice contained in the paddy discharged from the discharge side ■'' of the sorting barrel ■, thereby further improving the ability to sort brown rice.

In addition, the regulating gate valve 19 provided between the brown rice receiving gutter 18 and the mixed rice receiving gutter 21 has the following characteristics: This is to simultaneously adjust the opening width l of the sorting cylinder I in the circumferential direction, so that if one of them is widened, the other becomes narrow, and if one becomes narrow, the other becomes wide. Accordingly, the ratio of the brown rice to the brown rice receiving trough 18 and the mixed rice receiving trough 21 can be adjusted to the optimum state, depending on the quality of the mixed rice.

In addition, when the mixed rice falls and is supplied from the mixed rice receiving trough 21 into the sorting cylinder I, the mixed rice supply port 21 into the sorting cylinder I is provided.
' is opened in the vicinity of the lower end of the fluidized bed S of mixed rice in the sorting barrel and at a lower height relative to the flow J near IS, thereby supplying the rice into the sorting barrel. The mixed rice to be mixed flows into the mixed rice fluidized bed S formed in the sorting cylinder I near the lower end thereof and immediately forms the fluidized bed S, while the supplied mixed rice flows into the fluidized bed S. On the other hand, this supplied mixed rice falls from a low position and can reduce the spread of the fluidized bed S due to falling supply, so this supplied mixed rice is
This makes it possible to reduce scattering over a wide area on the inner peripheral surface of H.

The brown rice that has entered the brown rice receiving trough 18 in the secondary sorting cylinder (2) is sent to the secondary sorting cylinder (2) via a chute 31, where it is sorted to remove small rice contained in the brown rice. That is, the brown rice supplied into the secondary sorting cylinder 2 flows as described above and is transferred to the discharge side 25 while the brown rice is transferred to the finished brown rice receiving trough 25 and the small rice is transferred to the small rice receiving trough 25. After being sorted to fit into each section 17, the discharge side■''
The finished brown rice flows out through the chute 23 to the mixed rice conveyor 1, while the finished brown rice that enters the finished brown rice receiving trough 25 enters the brown rice conveyor 2 via the chute 24 and is taken out of the machine from the brown rice thrower 8. be.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of the entire hulling and sorting machine, and FIG. 2 is a cross-sectional view taken along the line X--X in FIG. 1. C...hulling part, B...wind sorting part, D...rotary sorting mechanism, ■... sorting cylinder, 13... recessed part, 1
'... Supply side, ■''... Discharge side, 18...
Brown rice receiving gutter, 21... Mixed rice receiving gutter, 21'... Supply port, 7... Mixed rice thrower as a means of transferring mixed rice - 129... Mixed rice supply tank, 19...
Adjustment gate valve, L...Opening width of brown rice catcher, L...
Opening width of mixed rice catcher.

Claims (2)

[Claims] (1) A rotary type in which a wind sorting section for mixed rice from the hulling section is provided at the lower part of the hulling section, and a number of recesses are formed on the inner peripheral surface on the sides of the hulling section. A rotary sorting mechanism equipped with an open-top brown rice receiving trough extending in the axial direction in the sorting barrel is disposed such that one end of the sorting barrel in the rotary sorting mechanism is located on the hulling section side. , one end of the sorting cylinder in the rotary sorting mechanism is configured as a discharge side, and the other end of the sorting cylinder is configured as a supply side, and the discharge side 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 top-open type mixed rice is provided at a portion of the sorting barrel on the mixed rice scraping-up side with respect to the brown rice receiving trough. A receiving gutter is provided approximately parallel to the brown rice receiving gutter, and a supply port provided on the supply side of the sorting cylinder in the mixed rice receiving gutter is opened in the supply side of the sorting cylinder in a downward direction substantially perpendicular to the axis of the sorting cylinder. On the other hand,
A portion of the mixed rice receiving trough located on the discharge side of the sorting barrel is provided with a means for transporting the mixed rice after the rice husks have been sorted in the wind sorting section, and a supply port in the mixed rice receiving trough is configured to be used for sorting. 1. A rice hulling and sorting device, characterized in that it is located near the lower end of the mixed rice fluidized bed in the barrel and at a lower height. (2) The opening width in the circumferential direction of the sorting cylinder in the brown rice receiving gutter is made larger than the opening width in the circumferential direction of the sorting cylinder in the mixed rice receiving gutter. rice huller sorting equipment.