JP6742107B2 - Hulling device - Google Patents

Description

The present invention relates to a hulling device including an impeller-type hulling processing unit.

The paddy hulling device is provided along the outer periphery of the paddy supply unit for discharging the paddy carried in from the outside in the radial direction and the outer periphery of the paddy supply unit, and rotates around the horizontal axis to be discharged from the paddy supply unit. An impeller portion that guides the removed paddy radially outward and a removing portion that receives the paddy guided by the impeller portion and removes the paddy by collision are provided. In the past, a space was formed in the paddy supply part so that the paddy flowed down from the paddy hopper was supplied to the radially inner side of the impeller part (for example, refer to Patent Document 1).

JP-A-3-146139

In the above conventional configuration, since the paddy guided down from the paddy hopper is supplied through the space to the impeller portion that rotates at a high speed in order to take off by collision, the following disadvantageous surface is provided. was there.

In other words, if a large amount of paddy is introduced from the paddy hopper side, the paddy may exist in the paddy supply section in a state where it is gathered in multiple layers, and the paddy is agglomerated in a part in the circumferential direction with respect to the impeller section. May be supplied as is. As a result, the rate of unhulled rice that has been discharged without the removal process increases, and there is a disadvantage that the removal rate decreases.

Therefore, it has been desired to improve the removal rate by supplying the paddy to the impeller portion in a state where the paddy is evenly distributed in the circumferential direction.

The characteristic configuration of the hulling apparatus according to the present invention is,
A paddy supply unit that discharges paddy brought in from outside to the outside in the radial direction;
The pad is provided along the outer periphery of the paddy supply unit so as to receive the paddy discharged from the paddy supply unit, and is rotated around the rotation axis located at the center of the paddy supply unit and discharged from the paddy supply unit. An impeller portion that guides the removed paddy radially outward,
A padding section for receiving the paddy guided by the impeller section and removing the paddy by collision,
The paddy supply unit is provided in a state where it does not rotate around the rotary shaft core, and comprises a tubular paddy guide body having a width corresponding to the width of the impeller portion in the rotary shaft core direction,
A paddy inlet is formed on one end side in the axial direction of the paddy guide body, and a plurality of paddy discharge openings are formed along the circumferential direction on the outer peripheral portion of the paddy guide body ,
Inside the paddy guide body, a blade body that rotates around an axis parallel to the axis of rotation of the impeller portion is provided,
The amount of projection of the blade body outward in the radial direction is smaller in the direction of the rotation axis as it is closer to the paddy inlet side .

According to the present invention, the paddy carried in from the outside is supplied to the inside of the cylindrical paddy guiding body from the paddy inlet formed at one end side in the axial direction. Since the paddy guide body has a width corresponding to the width of the impeller portion in the direction of the rotation axis, the paddy fed inside the paddle guides only to the impeller portion through the paddy discharge opening formed in the outer peripheral portion of the paddy guide body. Emitted.

Since a plurality of paddy discharge openings are formed along the circumferential direction, the paddy supplied inside the paddy guide body is discharged radially outward from each of the plurality of paddy discharge openings toward the impeller portion. It As a result, even if a large amount of paddy flows into the paddy supply unit and the paddy remains in a multilayered state, the paddy is sequentially removed from the radial outside of the paddy discharge opening. Since it is discharged toward the side, there is little risk that the paddy will be discharged in a lump form. Moreover, the paddy is discharged in a state of being dispersed in the plurality of paddy discharge openings that are different in the circumferential direction.

Therefore, it becomes possible to supply the paddy to the impeller portion in a state where the paddy is even in the circumferential direction, and it is possible to provide the paddy hulling device capable of improving the removal rate.
Further, according to the present invention, the blade body provided inside the paddy guide body rotates about an axis parallel to the rotation axis of the impeller section, so that the paddy supply section remains in a multi-layered state. Even if the paddy is present, it can be leveled in the circumferential direction by the blade body, and can also exert the action of guiding the paddy radially outward through the paddy discharge opening. Therefore, it is possible to prevent the paddy from staying in the paddy guide body in a state where the paddy is collected in multiple layers, and to feed the paddy in a state where the paddy is even in the circumferential direction.
Furthermore, when the paddy supplied from outside enters the inside of the paddy guide body through the paddy entrance, the padding is small on the paddy entrance side, so the paddy is not hindered by the paddy body and It becomes easy to get inside.

In the present invention, it is preferable that a radial outer side portion of the inner peripheral edge of the paddy discharge opening on the lower side in the rotation direction of the impeller portion is chamfered.

According to this configuration, since the radially outer portion of the paddy discharge opening through which the paddy passes in the radial direction is chamfered, the paddy does not get caught at the end of the inner peripheral edge of the paddy discharge opening. It is smoothly discharged to the outside and easily guided toward the impeller portion.

In the present invention, it is preferable that the rotary drive shaft of the impeller portion is inserted inside the paddy guide body, and the blade body is attached to the rotary drive shaft.

According to this configuration, the blade can be attached without making the structure complicated by providing the dedicated support member by effectively utilizing the rotary drive shaft provided for rotating the impeller portion.

It is a front view of a rice-polishing processing facility. It is a cross-sectional plan view of a rice polishing treatment facility. It is a vertical section rear view of a rice-polishing processing equipment. It is a vertical side view of a rice polishing treatment facility. It is a rear view of the arrangement part of a hulling part and a wind selection part. It is a vertical section rear view of a foreign substance removal device. It is a top view of a foreign material removal device. It is a vertical side view of a hull part. It is a vertical side view of a hulling processing part. It is a vertical section rear view of a hulling process part. It is a longitudinal rear view of the paddy guide body arranging portion. It is a vertical cross-sectional rear view of a granular material guide part and a wind selection part.

Hereinafter, a case where the hulling apparatus according to the embodiment of the present invention is applied to a coin-type rice milling machine equipped with a hulling machine will be described with reference to the drawings.

〔overall structure〕
1 to 4 show rice milling processing equipment. In this facility, a partition wall 4 separates a guest room 2 in which a user can freely come and go from inside a building 1 and a machine room 3 that can be accessed only by limited people such as managers and maintenance personnel. Prepared in condition.

The guest room 2 is provided with a hopper 5 for inputting the grains to be treated such as paddy or brown rice by the user, and a white rice hopper 6 for discharging and accumulating hulled brown rice or polished rice. There is. The input hopper 5 is located on the right side of the passenger compartment 2. The white rice hopper 6 is located on the left side of the cabin 2. Between the input hopper 5 and the white rice hopper 6, a front surface of the operation control panel 7 is arranged so as to face the inside of the passenger compartment 2. On the front surface of the operation control panel 7, in addition to the coin insertion section 8, a changeover switch 9 for designating whether the grain to be processed is brown rice or paddy, and a plurality (for example, four) of whitening for selecting a whitening degree. A degree selection switch 10 and the like are provided. Although not shown, inside the operation control panel 7, there is provided a control device for controlling the operating states of the respective parts based on the commands of the respective switches.

In the machine room 3, a foreign matter removing device 11 as an upper sorting unit for removing foreign matters such as straw chips and other contaminants other than the particles contained in the grains to be treated, and rice husks from the grain to be treated. A hulling unit 12 that executes a depulling process (hulling process) for removing, a wind that acts on a treated product after the debuffing process in which brown rice and rice husks are mixed, and separates and separates the brown rice and the rice husks. Stone picking machine 14 as a lower side sorting section for removing foreign matters such as stones contained in brown rice separated by the sorting section 13 and the wind sorting section 13, brown rice after the hulling process is completed, or bran from the introduced brown rice For removing rice, a first rice-feeding conveyor 16 for sending the grains to be treated put into the input hopper 5 to the huller 12 through the foreign matter removing device 11, a stone removing machine 14 for removing stones, etc. A second lifting conveyer 18 for sending brown rice from which foreign substances have been removed to the rice polishing unit 15 is provided. In this embodiment, the hulling unit 12 and the wind selecting unit 13 constitute a hulling device according to the present invention.

The first lifting conveyor 16 is provided in a state of being located on the left side of the loading hopper 5. Although the detailed configuration will not be described, the first lifting conveyer 16 is, as shown in FIG. 4, a bucket conveyer in which a plurality of buckets 16b are provided on an endless rotating belt 16a stretched along the vertical direction. In the above, the particles to be treated, which have been charged into the charging hopper 5, are lifted up and conveyed by the bucket 16b, and discharged from the upper end through the shooter 19 toward the foreign matter removing device 11 as an example of the particle selecting device. To do.

As shown in FIGS. 2 and 3, the foreign matter removing device 11 is located on the rear side of the first lifting conveyor 16 and above the hulling section 12. The foreign matter removing device 11 screens the processing target particles (paddy) put into the input hopper 5 before the processing target particles (paddy) are put into the paddy hull 12 so as to remove straw chips and other contaminants from the processing target particles. It is composed of expressions.

As shown in FIG. 5, the foreign matter removing device 11 is supported at an upper portion inside the support case 20 having a rectangular frame shape in a plan view. At the lower part of the inside of the support case 20 and the lower part of the foreign matter removing device 11, the particles to be treated (paddy) leaking from the foreign matter removing device 11 are guided to the inlet part 21 of the hulling part 12. A first narrowing-down paddy guide section 22 and a foreign matter removed by the foreign matter removing apparatus 11 and falling downward from the transport end point of the foreign matter removing apparatus 11 as a first discharging section provided below. A downward constricted foreign matter guide portion 24 for guiding to the recovery container 23 is provided.

[Foreign substance removing device]
The foreign matter removing device 11 will be described.
As shown in FIGS. 6 and 7, the foreign matter removing device 11 includes a drive roller 25 as a drive wheel that rotates around a first horizontal axis X1 along the front-rear direction, and a second roller parallel to the first horizontal axis X1. A plurality of passing holes 27a, which are wound around the driven roller 26 as a driven wheel rotating around the horizontal axis X2, the driving roller 25, and the driven roller 26, and select and leak the particles to be processed as the particles. It has an endless rotation band 27, an electric motor 28 that rotationally drives the drive roller 25, a support frame 29 that supports each member, and the like.

A receiving unit 30 that receives the particles to be processed discharged from the first lifting conveyor 16 and supplies the particles to the endless rotation zone 27 is provided above the portion on the upstream side in the transport direction of the foreign matter removing apparatus 11. The receiving section 30 is provided with a plurality of flow-down plates 31 for receiving the processing target particles to be carried in and guiding the particles to flow down and leveling them in the lateral width direction. Even if the particles may be intensively loaded from the first lifting conveyor 16 to the same location via the shooter 19, the receiving unit 30 supplies the particles to be processed to the endless rotation belt 27 in a state of being leveled in the width direction. can do. Further, a leveling plate 32 made of a soft synthetic resin material as an elastic material for leveling the particles to be processed is provided at the lower side of the receiving section 30 in the conveying direction.

The endless rotation band 27 is composed of a mesh. That is, as shown in FIG. 7, a plurality of thin rod-shaped bodies are provided in a state of extending over the entire width in the width direction and at intervals in the rotation direction. Adjacent rod-shaped bodies are intertwined at two positions on both side ends in the lateral width direction and an intermediate portion in the lateral width direction to form a net-like body, and the net-like bodies are connected endlessly to form an endless rotation band 27. ..

The number of passage holes 27a formed in the endless rotation zone 27 is set such that the width along the rotation direction is narrow enough to allow only one grain of rice to pass through, and the width along the width direction is the conveyor conveyance width. It is formed in a wide width corresponding to a width of about one third. Thus, the passage hole 27a is formed in a horizontally long shape that is long in the width direction. The lateral width of the passage hole 27a is formed so that not only the paddy but also long foreign matters such as the straw scraps K contained in the grains to be treated can pass through.

A fixed guide 33 is provided between the upper rotary surface 27A and the lower rotary surface 27B of the endless rotary band 27 to guide the upper rotary surface 27A from the lower side. The fixed guide 33 includes a plurality of guide portions 34 that extend in the rotation direction at intervals smaller than the lateral width of the passage hole 27 a of the endless rotation band 27. The plurality of guide portions 34 are arranged in the lateral direction at predetermined intervals, and are provided in a state in which the three guide portions 34 are positioned within the lateral width of one passage hole 27a. Each of the plurality of guide portions 34 is composed of a strip-shaped plate body extending in the rotation direction in a vertical posture, and is integrally connected to a connecting portion 35 having a rectangular frame shape in plan view.

As shown in FIG. 6, the side plates 35a on both sides in the lateral width direction of the connecting portion 35 in the fixed guide 33 are provided on the sides on both sides in the lateral width direction of the support frame body 29 by the bolts 36 provided two by two at intervals in the rotation direction. It is connected to the frame portion 29a. In this way, the fixed guide 33 is supported by the support frame 29.

A position adjusting mechanism 37 capable of changing the vertical position of the fixed guide 33 with respect to the support frame 29 is provided. The bolt insertion hole of the side plate 35a is formed as a circular hole whose upper and lower positions are fixed in a state where the bolt 36 is inserted, and the bolt insertion hole of the side frame portion 29a has a length that is vertically movable while the bolt 36 is inserted. It is formed in the hole. Therefore, it is possible to change and adjust the vertical position of the fixed guide 33 within the range of the elongated hole, and the mechanism connected by the bolt 36 via this elongated hole corresponds to the position adjusting mechanism 37.

The drive roller 25 and the driven roller 26 are rotatably supported by the support frame 29 via bearings 38. In the electric motor 28, a motor main body 28A is supported by a side frame portion 29a of a support frame 29 via a bracket 40, and an output shaft 28B is interlockingly connected to the drive roller 25. When the drive roller 25 is driven by the electric motor 28, the two sprockets 41 provided on the drive roller 25 mesh with and interlock with the endless rotation band 27, and the endless rotation band 27 is rotationally driven.

The side plate 35b of the fixed guide 33 on the lower side in the transport direction of the connecting portion 35 is provided at a position corresponding to a boundary portion between the paddy guide portion 22 and the foreign matter guide portion 24. Therefore, the side plate 35b on the lower side in the transport direction corresponds to the partition member. A gap filling member 42 that fills a gap between the lower end of the side plate 35b on the lower side in the transport direction and the lower rotation surface 27B of the endless rotation band 27 is provided. The gap filling member 42 is attached to the side plate 35b on the lower side in the transport direction by bolt connection. The gap filling member 42 is made of a soft synthetic resin material as an elastic body and can be freely retracted without being damaged even if it comes into contact with the endless rotation band 27. Therefore, it is possible to prevent the debris from entering the paddy guide portion 22 and the paddy from entering the foreign matter guide portion 24.

At the boundary portion between the paddy guide portion 22 and the foreign matter guide portion 24, which is located below the lower rotating surface 27B of the endless rotating band 27, under the endless rotating band 27, straw debris or the like is chaffed. A lower partitioning member 39 is provided to prevent the foreign matter from entering the guide portion 22 and the foreign matter guide portion 24 from entering the paddy field. In this way, the gap between the endless rotation band 27 is made as small as possible.

The foreign matter removing device 11 is installed so as to be inserted from the upper side of the support case 20, and the connecting frame portions 29b on both sides in the rotation direction of the support frame 29 are spaced from the side walls on both sides in the rotation direction of the support case 20. It is placed and supported by a pair of catches 43 provided as a set. During the maintenance work, the foreign matter removing device 11 can be easily lifted from the support case 20 and taken out.

In the foreign matter removing apparatus 11, when the particles to be processed are supplied to the receiving section 30 by the first lifting conveyor 16, the particles to be processed are supplied from the lower end outlet of the receiving section 30 to the endless rotation zone 27, and the endless rotation is performed. As the moving belt 27 rotates, the paddy M leaks from the passage hole 27a and is guided to the entrance 21 of the paddy sliding portion 12 through the paddy guide portion 22 and conveyed without leaking through the passage hole 27a. Straw dust K and the like falling downward from the end point portion is collected in the first collection container 23 through the foreign matter guide portion 24.

Even if the particles to be treated are supplied in a state in which they are biased to a part of the area at the lower end outlet of the receiving section 30, they can be leveled by the leveling plate 32. Further, as shown in FIG. 7, the long straw scraps K can pass through the passage holes 27a of the endless rotation band 27 when they are in a horizontal posture, but they are located below the endless rotation band 27. It can be conveyed to the conveyance end portion by being received by the fixed guide 33 provided. With this configuration, in the endless rotation band 27 formed of a mesh-like body formed by intertwining rod-shaped bodies, there is little risk that the straw scraps K will be caught and accumulated at the entangled portions of the rod-shaped bodies, and can be favorably maintained for a long period of time. Can be processed.

[Hulling part]
Next, the hulling section 12 will be described. As shown in FIG. 8, the hulling unit 12 guides the impeller-type hulling processing unit 44 for removing the hull and the processing target grains (hulls) supplied from the foreign matter removing device 11 to the hulling processing unit. And a grain guide portion 45.

As shown in FIG. 5, a box-shaped main body casing 47 as a housing is provided on the upper portion of the support base 46. The main body casing 47 functions as a frame body that supports a plurality of devices described below. The granular material guide portion 45 is provided in a state of being housed inside the main body casing 47, and the hulling processing portion 44 is provided in a state of being supported by the outer surface of the rear side wall 47</b>A as the outer lateral surface of the main body casing 47. ing.

As shown in FIG. 8, the granular material guide part 45 temporarily stores the paddy discharged from the paddy guide part 22 of the upper foreign matter removing device 11 and supplied from the inlet part 21, and the granular material guide part 45 removes the paddy by the downflow guide part 49. It is provided with a hopper 48 that guides the flow downwards.

The hulling processing unit 44 will be described.
As shown in FIGS. 8, 9 and 10, the hulling processing unit 44 includes an impeller unit 50 that rotates around the horizontal axis X3 and a paddy supply unit 51 that supplies paddy to a radially inner side portion of the impeller unit 50. And a case 52 for covering them.

The removing case 52 is formed in a substantially cylindrical shape having a predetermined width in the rotation axis direction so as to cover the outer peripheral portion of the impeller portion 50. A liner 53 is provided on the inner peripheral surface of the outer peripheral portion of the impeller portion 50 of the removing case 52 as an outer removing portion that covers the outer peripheral portion of the impeller portion 50. The liner 53 is formed in a strip plate shape using a soft material such as urethane. The removal case 52 is provided with treated materials (including brown rice, rice husks, untreated rice, etc.) after the removal (hulling) is performed by the wind force generated by the rotation of the impeller section 50. The transport guide portion 52a for transporting to is formed in a series. The lateral outer side portion 52b of the removing case 52 is formed as a detachable lid, and is held in a closed state by a plurality of buckle mechanisms 54.

The paddy supply unit 51 is provided with a cylindrical paddy guide body 55 in a state of being connected to the lower side of the flow-down guide unit 49 in the guiding direction. The paddy guide body 55 is located on the same axis centering on the rotation axis X3 of the impeller portion 50, and the width in the axial direction is substantially the same as the width in the axial direction of the impeller portion 50.

In the paddy guide body 55, a paddy inlet 56 is formed on one end side in the axial direction, and the paddy guided down from the hopper 48 through the drop-down guide portion 49 passes through the paddy inlet 56 and is guided inside the paddy guide body 55. As shown in FIG. The other end of the paddy guide body 55 in the axial direction is closed by a side wall portion 57. The side wall portion 57 also serves as a shaft support portion that rotatably supports a drive shaft 58 described later.

As shown in FIGS. 9, 10, and 11, in a part of the outer peripheral portion of the paddy guide body 55, a plurality of paddy discharge openings 59 are formed along the circumferential direction. Specifically, in the outer peripheral portion of the paddy guide body 55, a plurality (4) of paddy discharge openings 59 are formed over a predetermined range from the lowermost position toward the lower side in the rotational direction of the impeller portion 50. Each paddy discharge opening 59 is in the shape of a long hole that is long in the axial direction and narrow in the circumferential direction, and is formed in a state of being lined up in the circumferential direction with an interval narrower than the opening width in the circumferential direction.

As shown in FIG. 11, in the inner peripheral edge of the paddy discharge opening 59, a radial outer side portion 60 on the lower side in the rotation direction of the impeller portion 50 is chamfered. With this configuration, the paddy supplied to the inside of the paddy guide body 55 is easily discharged from the plurality of paddy discharge openings 59 toward the impeller portion 50.

As shown in FIG. 8, the main casing 47 extends from the front side wall 47B on the side opposite to the hulling process part 44 to the outside of the hulling process part 44 through the flow-down guide part 49 and the central part of the paddy supply part 51. A drive shaft 58 is provided. The drive shaft 58 is rotatably supported via a bearing 61 on the front side wall 47B of the main body casing 47 and the side wall portion 57 of the paddy guide body 55.

A portion of the drive shaft 58 on the side opposite to the hulling processing portion 44 is interlockingly connected to an electric motor 62 provided in a lower inside portion of the main body casing 47. An end portion of the drive shaft 58 on the side of the hulling processing portion 44 is integrally rotatably connected to the impeller portion 50. Therefore, by driving the electric motor 62, the impeller unit 50 can be rotationally driven.

Inside the paddy guide body 55, there is provided a delivery blade 63 (an example of a blade body) that is attached to the drive shaft 58 and rotates about the same axis as the rotation axis of the impeller portion 50. The delivery blade 63 is integrally formed on the outer peripheral portion of the boss portion 64 fitted onto the drive shaft 58. Six delivery blades 63 are formed so as to radially project outward in the radial direction. Each of the feed-out blades 63 is formed such that the amount of projection to the radially outer side becomes smaller in the axial direction in the part on the side of the paddy inlet 56 as it gets closer to the paddy inlet 56. In this way, the paddy supplied from the hopper 48 through the downflow guide portion 49 easily enters the paddy guide body 55 through the paddy inlet 56.

As shown in FIGS. 8, 9, and 10, the impeller unit 50 includes a plurality of impeller blades 65 radially extending outward in the radial direction and the paddy discharged from the paddy supply unit 51 along the rotation axis direction. And a dispersion guide member 66 that guides the particles in a space between the impeller blades 65 adjacent to each other.

The plurality of impeller blades 65 guide the paddy supplied by the paddy supply unit 51 by a sliding guide surface 67 extending in the radial direction, and guide the paddy radially outward by a centrifugal force accompanying the rotation. .. Each impeller blade 65 is made of a plate-shaped metal material and forms a wide sliding guide surface 67.

A paddy guide block body 69 that functions as an inner removing unit that has a collision surface 68 that intersects with the sliding guide surface 67 in a state where the impeller blades 65 rotate outwardly in the radial direction integrally with each other. (One example of the receiving body) is provided. The paddy guide block 69 is integrally formed using a soft material made of urethane, which is a soft synthetic resin.

Disc-shaped support plates 70 and 71 made of a synthetic resin material are provided on both sides of the impeller blades 65 in the axial direction, and the left and right side surfaces of each impeller blade 65 are connected to the support plates 70 and 71. ing. The outer support plate 70 is interlockingly connected to the drive shaft 58 via the boss 72 so that torque can be transmitted.

The dispersion guide member 66 includes a plurality of partition forming members 73 arranged in a posture orthogonal to the rotation axis at a set interval along the rotation axis direction, and a plurality of sliding guides arranged in a radial direction at intervals in the circumferential direction. The member 74 is integrally assembled. The dispersion guide member 66 is integrally fixed to the outer support plate 70, and, like the impeller portion 50, is interlockingly connected to the drive shaft 58 so that torque can be transmitted.

One paddy passage portion 75 is formed in a region surrounded by two adjacent partition forming members 73. The paddy passage portion 75 has a lateral width that allows a single grain of paddy to pass radially outward along the direction of the axis of rotation, and is divided into a plurality of parts arranged in the direction of the axis of rotation. Specifically, the width of one paddy passage portion 75 is set smaller than the width of the paddy in the long direction and wider than the width of the paddy in the short direction. The paddy passage portion 75 is provided over the entire area in the circumferential direction, and is divided into a plurality of areas in the circumferential direction by the plurality of sliding guide members 74.

The paddy guided into the paddy guide body 55 by the flow-down guide portion 49 is discharged to the outside from the plurality of paddy discharge openings 59. At that time, it is allowed that one grain of paddy sequentially enters the paddy passage portion 75 in the direction of the axis of rotation. In this way, the width along the rotation axis direction with respect to the paddy passage portion 75 is set to a width in which the intrusion of each grain is regulated, so that the paddy is in a state of being evenly distributed in the axis direction.

When the impeller portion 50 rotates, the paddy is guided radially outward by the centrifugal force associated with the rotation and collides with the collision surface 68 of the paddy guide block body 69, and the padding (hulling treatment) is performed by the impact. The rice is separated into rice husks and brown rice. Although some paddy may remain as it is without removing it, it is thrown toward the outer liner 53 as the impeller portion 50 rotates, and the removing process is performed again by the outer liner 53.

The processed product that has been removed and separated into brown rice and rice husk is conveyed to the wind selecting unit 13 through the conveyance guide unit 52a of the removing case 52 by the wind force sent by the rotation of the impeller unit 50.

[Wind Selector] Next, the wind selector 13 will be described.
As shown in FIGS. 5 and 12, the wind selecting unit 13 includes a wind selecting guide unit 76 for guiding down the processed material from the hulling processing unit 44 in which brown rice and rice husks are mixed, and a wind selecting guide unit 76. A wind-selection action section 77 is provided which applies a sorting wind to the treated material flowing down to separate the treated material into brown rice and rice husks.

As shown in FIGS. 2 and 8, the wind-selection guide portion 76 is provided in a state of being housed inside the main body casing 47, and the wind-selection operating portion 77 is provided on the rear side wall 47</b>A as the outer lateral surface of the main body casing 47. It is provided so as to be supported on the outer surface. The grain guide portion 45 and the wind selection guide portion 76 are provided side by side in the lateral direction, and the hulling treatment portion 44 and the wind selection action portion 77 are arranged side by side on the outer surface of the rear side wall 47A of the main body casing 47. It is equipped with.

An inlet portion 78 of the wind selection guide portion 76 is formed on the upper wall 47C of the main body casing 47, and is provided at the outlet portion of the hulling treatment portion 44, that is, the transport guide portion 52a of the removing case 52 and the upper portion of the wind selection guide portion 76. The inlet portion 78 is communicatively connected by a connecting pipe 79 as a communicating portion.
As shown in FIGS. 3 and 5, the connecting pipe 79 passes between the hulling processing unit 44 and the wind selecting unit 77. By the wind force sent by the rotation of the impeller unit 50, the processed material is conveyed to the inlet 78 of the wind selection guide unit 76 through the conveyance guide unit 52a and the connection pipe 79.

As shown in FIG. 12, the wind selection guide part 76 includes a granular material downflow passage 76A for guiding down the processed material from the hulling processing part 44, and the granular material guide part 45 with respect to the granular material downflow passage 76A. And a cushioning air passage 76B located on the opposite side. The granule flow-down passage 76A is provided with a plurality of flow-down plates 80 that receive the workpieces to be carried in and guide the flow-downs alternately in opposite directions. A discharge portion 81 of the wind selection guide portion 76 is formed on the bottom portion 47D of the main body casing 47 located below the granular material flow-down passage 76A.

The cushion ventilation passage 76B is formed by a partition member 82 having a substantially U shape. An external air intake port 83 is formed on the side wall 47E of the main body casing 47 on the side of the hulling treatment unit 44, and the external air intake port 83 and the buffer ventilation passage 76B are communicated with each other in a state where the external air intake port 83 traverses the granular material downward passage 76A. A ventilation passage 76C is formed.

On the inner side of the lateral side wall 47E on the side of the hulling treatment section 44 of the main body casing 47 where the outside air intake port 83 is formed, a ventilation passage 76C for selection is formed by utilizing an empty area on the outer side of the downflow guide section 49. Has been formed. Among the sorting air passages 76C, a vertical air passage 76C1 for preventing brown rice from flowing toward the buffer air passages 76B is provided between the buffer air passages 76B and the granular material downflow passages 76A. Has been formed. An adjustment ventilation passage 85 that communicates with the air volume adjustment opening 84 formed in the upper wall 47C of the main body casing 47 is formed on the opposite side of the cushion ventilation passage 76B from the vertically oriented ventilation passage 76C1. The outside air intake port 83 and the air volume adjusting opening 84 are each provided with a sliding type shielding plate 86, and the air volume of the selection air can be changed and adjusted by sliding the shielding plate 86 to change the opening area. it can.

On the inner side of the lateral side wall 47E of the main body casing 47 on the side of the hulling treatment unit 44, an empty space is used to collect foreign matter such as straw dust discharged through the foreign matter guide unit 24 of the foreign matter removing device 11. A discharge passage 87 that passes therethrough is formed. Contaminants such as straw chips pass through the discharge passage 87 and are discharged from the discharge port 87a to the first recovery container 23 to be collected.

On the outer surface of the rear side wall 47A of the main body casing 47, a location corresponding to the buffer ventilation passage 76B is provided with a wind selecting portion 77. As shown in FIGS. 5 and 12, the rear side wall 47A of the main body casing 47 is formed with an opening 88 that communicates the wind selection action portion 77 and the buffer ventilation passage 76B.

The granular material flow-down passage 76</b>A can flow the plurality of flow-down plates 80 alternately to make the processed material uniform in the lateral width direction and form the thinnest possible layer. Then, the fan 89 provided in the wind selecting portion 77 takes in air through the opening 88 to generate the sorting wind, and the sorting wind is passed through the sorting ventilation passage 76C. As described above, the sorting wind acts on the layered processed material, the light rice husks are sucked toward the wind selecting portion 77, and the heavy brown rice is discharged downward from the discharging portion 81 below. By performing the suction action by the fan 89 through the buffer ventilation passages 76B, it is possible to uniformly ventilate the granular material downward passage 76A along the axial direction of the fan 89, and to the downward target particles to be treated. Therefore, the sorting wind can be applied substantially evenly with little bias.

As shown in FIG. 5, the wind selecting portion 77 rotates around an axis X4 parallel to the rotation axis X3 of the impeller portion 50 inside a fan casing 90 having a substantially cylindrical shape similar to that of the removing case 52. It is equipped with a fan 89. The fan casing 90 is formed with an outer guide portion 90a that guides discharged materials such as rice husks that are sucked through the opening 88 and blown off by the fan 89 to the outside. A discharge duct 91 that guides the discharged substances to the outside of the equipment is connected to the outer guide portion 90a. Although not shown, for example, a cyclone-type dust collector or the like is connected to the discharge duct 91 on the outside of the facility to collect waste such as rice husks.

[Transmission structure]
A belt transmission mechanism 92 is provided as a power transmission unit that power-connects the impeller unit 50, which serves as a rotor for hulling of the hulling processing unit 44, and the fan 89, which serves as a rotor for blowing air of the wind selection action unit 77. ing. The belt transmission mechanism 92 is a device casing outer side portion on the side opposite to the grain hulling processing portion 44 and the wind selecting action portion 77, that is, the main body casing with respect to the granular material guide portion 45 and the wind selecting guide portion 76 in a plan view. It is provided on the outer surface of the front side wall 47B of 47. An electric motor 62 as a drive unit for applying power to the belt transmission mechanism 92 is provided below the wind selection guide unit 76.

Specifically, as shown in FIGS. 3 and 8, the belt transmission mechanism 92 is provided on the front side wall 47B of the main body casing 47 as an apparatus lateral outer side opposite to the hulling processing section 44 and the wind selecting section 77. It is provided on the outside. The electric motor 62 is provided below the granular material flow-down passage 76A in the wind selection guide portion 76 and is supported by the bottom portion 47D of the main body casing 47. The belt transmission mechanism 92 includes a pulley 93 attached to the output shaft 62a of the electric motor 62, a pulley 94 attached to the drive shaft 89a of the fan 89, and a pulley 95 attached to the drive shaft 58 of the hulling processing unit 44. And a transmission belt 96 wound around them. Although not shown, a tension mechanism for applying a tension force is also provided. The outer side of the belt transmission mechanism 92 is covered with a transmission case 98.

[Switching structure between paddy and brown rice]
As shown in FIG. 12, a partition part 99 is provided between the grain guide part 45 of the hulling part 12 and the wind selecting guide part 76 of the wind selecting part 13 to partition them. Then, in the upper part of the partition part 99, the first supply state in which the processing target particles supplied to the inlet part 21 of the granular body guiding part 45 are supplied to the granular body guiding part 45, and the processing target supplied to the inlet part 21. A switching mechanism 100 is provided that is switchable to a second supply state in which the grains are supplied to the wind selection guide portion 76.

The switching mechanism 100 connects the inlet part 21 and the granule guide part 45 to each other, and connects the inlet part 21 and the wind selection guide part 76 to each other, and the first posture to connect the inlet part 21 and the wind selection guide part 76 to each other. In addition, the switching plate 101 is configured to be swingable by switching to the second posture that shuts off the inlet part 21 and the particle guide part 45, and the switching motor 102 that swings the switching plate 101. The switching motor 102 is provided on the lateral outer side of the apparatus on the side where the hulling processing unit 44 and the wind selecting unit 77 are present, that is, on the outer surface of the rear side wall 47A of the main body casing 47.

As shown in FIG. 8, the switching plate 101 is swingably supported by the main body casing 47 by a support shaft 103 parallel to the drive shaft 58 of the hulling processing unit 44. When the switching plate 101 is switched to the first posture, the inlet portion 21 formed on the upper surface of the main body casing 47 and the grain guide portion 45 of the hulling treatment portion 44 are made to communicate with each other, and the inlet portion 21 and the wind selecting portion are connected. The state where the guide portion 76 and the flow-down start position are cut off is established. When the switching plate 101 is switched to the second posture, the inlet 21 and the flow start position of the wind-selection guide 76 are communicated with each other, and the inlet 21 and the grain guide 45 of the hulling treatment unit 44 are blocked. Ready to go.

The particles to be treated, which have been charged into the charging hopper 5, are lifted and conveyed by the first lifting conveyor 16 and, after passing through the foreign matter removing device 11, are supplied to the inlet 21. Therefore, when the grain to be treated is paddy, the switching plate 101 is switched to the first posture. On the other hand, when the grain to be processed is brown rice, the switching plate 101 is switched to the second posture. The switching of the switching plate 101 is performed by operating the switching motor 102 based on a command from the switching switch 9.

[Stone removing machine]
When the paddy is put into the area below the main body casing 47 and inside the lower side of the support base 46, the paddy rice is put in after the hulling process and the wind selecting process are performed. In this case, the rocking/sorting type stone removing machine 14 that acts on the particles to be processed is provided after the wind selecting process is performed. The stone removing machine 14 will not be described in detail, but while the supplied grains to be processed are oscillated by the oscillating transfer plate 104, light brown rice is allowed to flow down as it is due to a difference in specific gravity and discharged from the one-side outlet 105, The second hoisting conveyer 18 carries out the hoisting. Contaminants such as heavy pebbles are discharged to the lower side of the swing transfer plate 104 from the outlet 106 on the opposite side while being stored. Contaminants such as pebbles discharged from the outlet 106 on the opposite side are collected in a second collection container 107 serving as a second discharging section.

As shown in FIG. 3, the second recovery container 107 is provided on the side of the support base 46 and is supported by the floor surface of the facility, like the support base 46. Then, the first recovery container 23 is provided in a state of being placed and supported in a state of overlapping with the upper side of the second recovery container 107. Therefore, the first collection container 23 and the second collection container 107 are provided in a state where they are vertically aligned at one lateral position of the equipment.

[Rice Polishing Department]
The brown rice after the sorting processing by the stone removing machine 14 is finished is lifted and conveyed by the second lifting conveyor 18 and supplied to the rice polishing unit 15. Although not described in detail, the rice-polishing unit 15 has a brown-rice hopper 108 for temporarily storing the brown rice supplied from the second lifting conveyor 18 and a rice-polishing treatment unit 109 for processing the rice polishing of the brown rice supplied from the brown-rice hopper 108. With. The rice-polishing unit 109 has a rice-polishing chamber formed therein, and a rice-polishing roll (not shown) rotated by a drive motor 110 around a vertical axis is provided inside the rice-polishing chamber to supply brown rice to the rice-polishing chamber. Rice bran treatment is performed to remove bran from brown rice. Although not described in detail, the pressure is adjusted by a pressure adjusting mechanism (not shown) so that the brown rice in the rice polishing chamber is polished with an appropriate pressure to obtain the whiteness of rice that matches the whiteness of the rice selected by the customer. Is adjusted. The white rice obtained after the completion of the rice polishing treatment is stored in the white rice hopper 6, and then the user opens the white rice hopper 6 to collect it in a separately prepared collecting bag.

[Another embodiment] (1) In the above-described embodiment, the liner 53 (outer side removing portion) provided on the outer peripheral side of the impeller portion 50 and the radial outside of the impeller blade 65 are provided as the removing portion. Although the paddle guide block body 69 (inner plucking portion) is provided, instead of this configuration, only the paddy guide block body 69 and the liner 53 are provided as the plucking portion. May be

(2) In the above-described embodiment, the drive shaft 58 of the impeller portion 50 is provided with the delivery blade 63 (blade body). However, instead of this configuration, the drive shaft 58 is delivered to a dedicated support member other than the drive shaft 58. The blade 63 may be attached.

(3) In the above-described embodiment, the radial outer side portion 60 of the inner peripheral edge of the paddy discharge opening 59 is chamfered, but the chamfering is not performed and the corners are left as they are. Good.

( 4 ) In the above embodiment, the hulling device according to the present invention is configured by the hulling part 12 and the wind selecting part 13 that are integrally supported by the main body casing 47. It may be a hulling device provided with the device 11, the stone removing machine 14 and the like integrally supported. Further, the hulling device according to the present invention may be configured only by the hulling part 12 without providing the wind selecting part 13.

( 5 ) In the above-described embodiment, the one applied to the coin-type rice milling treatment equipment is shown, but a dedicated hulling device that performs only hulling treatment may be used.

The present invention can be applied to a hulling device provided with an impeller-type hulling processing unit.

50 Impeller Section 51 Paddy Feeding Section 53, 69 Removing Section 55 Paddy Guide Body 56 Paddy Inlet Section 58 Rotating Drive Shaft 59 Paddy Discharge Opening 60 Radial Outer Side 63 Blade Body

Claims (3)

A paddy supply unit that discharges paddy brought in from outside to the outside in the radial direction;
The pad is provided along the outer periphery of the paddy supply unit so as to receive the paddy discharged from the paddy supply unit, and is rotated around the rotation axis located at the center of the paddy supply unit and discharged from the paddy supply unit. An impeller portion that guides the removed paddy radially outward,
A padding section for receiving the paddy guided by the impeller section and removing the paddy by collision,
The paddy supply unit is provided in a state of not rotating around the rotary shaft core, and comprises a tubular paddy guide body having a width corresponding to the width of the impeller portion in the rotary shaft core direction,
A paddy inlet is formed on one end side in the axial direction of the paddy guide body, and a plurality of paddy discharge openings are formed along the circumferential direction on the outer peripheral portion of the paddy guide body ,
Inside the paddy guide body, a blade body that rotates around an axis parallel to the axis of rotation of the impeller portion is provided,
A hulling device in which the amount of projection of the blade body outward in the radial direction is smaller toward the paddy inlet side in the direction of the rotation axis . The hulling device according to claim 1, wherein a portion of the inner peripheral edge of the paddy discharge opening that is radially outward of the impeller portion on the lower side in the rotational direction is chamfered. The hulling device according to claim 1 or 2 , wherein a rotary drive shaft of the impeller portion is inserted inside the paddy guide body, and the blade body is attached to the rotary drive shaft .

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