JP7115285B2 - Rice husk sorter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a rice hull sorter for sorting and taking out unpolished rice by sucking and discharging rice husks separated by hulling rice to the outside of the machine.

As described in Patent Document 1, the rice hull sorter grinds rice with a hull roll to separate it into rice husks and brown rice, and discharges light rice husks out of the machine from the exhaust stack with the suction air of a suction blower, and removes brown rice. The finished rice conveyor takes it out of the machine. A pitot tube for detecting the wind force of the suction wind is provided in the exhaust stack, and the detected wind force is used as a guideline to control the motor that drives the intake fan to adjust the suction wind force.

Further, in Patent Document 2, a brown rice hoisting machine is provided on the side of the rocking sorting device, and dust generated by the brown rice husking machine is discharged from the exhaust pipe together with the rice husks by the suction air of the suction blower through the dust collection duct. of rice hull sorters are described.

JP-A-2-184348 Japanese Patent No. 6191738

In the rice husk sorter of Patent Document 1, the pitot tube provided in the exhaust pipe that discharges the rice husks and dust detects the wind force of the suction wind. is clogged with dust, the wind force measurement becomes inaccurate in a short time, and it is necessary to stop the husk sorter frequently and perform maintenance work to remove the dust adhering to the pitot tube.

SUMMARY OF THE INVENTION An object of the present invention is to stably measure the suction wind force for a long period of time in order to properly control the suction wind force of a suction fan in a rice hull sorter.

In order to solve the above problems, the present invention has taken the following technical measures.

A first aspect of the present invention is
The rice hulled by the rice huller (2) is sent to the rocking sorting device (6), and the rice husk is sucked by the suction blower (3b) of the air sorting section (3) and discharged out of the machine through the rice husk duct (3a). Then, in the hull sorter (1) that sends the brown rice sorted by the swing sorting device (6) to the brown rice tank (7a) by the finished rice elevator (7),
A dust suction duct (64) connecting the brown rice tank (7a) and the suction blower (3b) is provided,
The dust collecting duct (64) branches into a rear dust collecting duct (62) and a front dust collecting duct (63) extending forward and backward of the suction blower (3b),
A suction wind sensor (10) for detecting suction wind is provided in a dust suction passage (66) in a dust suction duct (64),
An outside air intake port (55) is provided on the top surface of the dust collecting duct (64), and an opening lid (56) for adjusting the intake air is provided in the outside air intake port (55), and the opening lid (56) is closer to the dust collection start end. A suction wind sensor (10) is provided in <Effect is 0063>
The opening lid (56) is composed of an intake plate (56a) having a plurality of slit holes and an adjustment plate (56b) that slides on the intake plate (56a) to adjust the degree of opening, and the opening lid (56) is provided at a position straddling the rear dust collection duct (62) and the front dust collection duct (63),
The hull sorter is characterized in that the opening lid (56) is detachable with respect to the outside air intake (55).
A second aspect of the present invention is
The suction wind sensor (10) is a pressure-sensitive plate (10a) suspended from a support shaft (10b), and a display needle (10c) attached to the support shaft (10b) is visible from outside the machine. It is a hull sorter of the first present invention.
A third aspect of the present invention is
A limit detection sensor (10e) is provided in the suction wind force sensor (10), and when the limit detection sensor (10e) detects a limit wind force for a predetermined time or longer, the driving motor (25) of the rice huller (1) is stopped. It is a hull sorter of the 1st or 2nd this invention characterized by doing.
The first invention related to the present invention sends the rice hulled by the rice huller (2) to the rocking sorting device (6) and sucks the rice husk with the suction blower (3b) of the wind sorting section (3). in a rice hull sorter (1) that discharges the rice husk duct (3a) to the outside of the machine and sends the brown rice sorted by the swing sorting device (6) to the brown rice tank (7a) by the finished rice elevator (7),
A dust suction duct (64) connecting the brown rice tank (7a) and the suction blower (3b) is provided, and a suction wind sensor (10) for detecting the suction wind is provided in a dust suction path (66) in the dust suction duct (64). A rice huller and sorter characterized by:

A second invention related to the present invention is a pressure-sensitive plate (10a) in which the suction wind force sensor (10) is suspended from a support shaft (10b), and a display needle (10c) attached to the support shaft (10b). is made visible from the outside of the machine.

In a third invention related to the present invention, an outside air intake port (55) is provided on the upper surface of the dust collection duct (64), and an air intake adjustment opening lid (56) is provided in the outside air intake port (55), A first aspect of the rice huller and sorter related to the present invention is characterized in that a suction force sensor (10) is provided in the vicinity of the opening lid (56).

A fourth invention related to the present invention is characterized in that the opening cover 56 is composed of an intake plate 56a having a plurality of slit holes and an adjustment plate 56b that slides on the intake plate 56a to adjust the degree of opening. It is considered as the hull sorter of the 3rd invention related to this invention which carries out.

A fifth invention related to the present invention is the grain huller of the first invention related to the present invention, characterized in that the opening lid 56 is made detachable with respect to the outside air intake port 55 .

A sixth invention related to the present invention is that the suction wind force sensor 10 is provided with a limit detection sensor 10e, and when the limit detection sensor 10e detects the limit wind force for a predetermined time or longer, the drive motor 25 of the rice huller 1 is stopped. The rice huller and sorter according to any one of the first to fifth inventions related to the present invention characterized by:

According to the present invention, dust is less likely to accumulate on the suction wind sensor, the frequency of cleaning maintenance of the suction wind sensor is low, and the hull sorter can be used stably for a long time. In addition, since the suction force sensor is provided on the side of the dust suction starting end from the opening cover, the dust suction capacity of the dust suction duct can be reliably detected. Furthermore, both the rear dust collection duct (62) and the front dust collection duct can be cleaned simply by opening one opening lid.
In the first invention related to the present invention, the suction blower 3b of the air selection unit 3 also sucks dust generated in the brown rice tank 7a of the rice elevator 7 through the dust suction passage 66. is measured by the suction wind sensor 10, the suction force of the suction blower 3b is estimated. Since the amount of dust sucked in the dust suction path 66 is small, dust is not likely to accumulate on the suction wind sensor 10, the frequency of cleaning and maintenance of the suction wind sensor 10 is low, and the hull sorter can be used stably for a long time. .

In the second invention related to the present invention, in addition to the effects of the first invention related to the present invention, the suction wind force sensor 10 detects the rotation of the pressure sensitive plate 10a with the support shaft 10b under the suction wind pressure. The movement of the display needle 10c can be notified to the operator on the side of the hull sorter 1.

In the third invention related to the present invention, in addition to the effects of the first invention related to the present invention, the opening lid 56 provided at the outside air intake port 55 of the suction blower 3b of the air selection section 3 can easily adjust the intake air amount. This can be done while looking at the suction wind sensor 10 on the side.

In the fourth invention related to the present invention, in addition to the effects of the third invention related to the present invention, suction from the external air intake port 55 is performed only by sliding the adjustment plate 56b with respect to the intake plate 56a of the opening lid 56. The amount of air sucked by the sucking blower 3b can be adjusted.

In the fifth invention related to the present invention, in addition to the effects of the first invention related to the present invention, the opening lid 56 is removed to open the outside air intake port 55 widely to facilitate maintenance such as inspection and cleaning of the inside. Easy to do.

A sixth invention related to the present invention prevents unpolished rice from being discharged from the rice husk duct 3a together with the chaff, in addition to the effect of any one of the first to fifth inventions related to the present invention .

Front side perspective view (a) and rear side perspective view (b) of the rice hull sorter Front view of the internal structure of the rice hull sorter Sorting distribution of rocking sorting plate Front view (a) and side view (b) of swing sorting device Perspective view of unhulled rice separator Front view of receiving gutter for distribution of mixed rice Disassembled perspective view (a) and main part side view (b) of the foreign object receiver Diagram showing transmission state and compressed air distribution connection state Flat sectional view (a) of mixed rice transfer gutter and mixed rice elevator and back sectional view (b) showing mixed rice transfer gutter and second air nozzle installation state Fig. 9(a) Sectional view of the lower part of the mixed rice elevator indicated by AA Top view of rocking sorting device Upper front view of rocking sorter Automatic control flow chart of the rice husk sorter

An embodiment of the present invention will be described based on the drawings.

First, the entire grain sorter to which the present invention is applied will be described.

As shown in the front perspective view (a) and the rear perspective view (b) of FIG. 1, the rice hull sorter 1 includes a rice hulling device 2 on the left end of the front side of the machine body and a wind sorting section 3 equipped with a rice husk duct 3a. , a mixed rice elevator 4 and a mixed rice tank 5 arranged at the rear, a rocking sorting device 6 that receives the mixed rice tank 5 at the rear, and a finished rice elevator 7 on the side. be done.

As shown in the front view of FIG. The rice husks separated by the suction blower 3b of the wind selection unit 3 are discharged from the rice husk duct 3a to the rice husk storage 81 via the relay fan 80, and the wind-selected grains (mixed rice of rice and brown rice) are discharged. The mixed rice is stored in the mixed rice tank 5 by the mixed rice elevator 4, and the wind-selected grains are supplied from the mixed rice tank 5 whose supply can be adjusted to the sorting start end H side of the swing sorting device 6, and the swing sorting device 6 Gravity sorting is carried out by rocking motion in the horizontal direction, the brown rice is biased to the rocking side, and the sorted brown rice is partitioned by arranging a movable brown rice partition plate 8a on the sorting end side T according to the unpolished rice region A of the brown rice, Open the circulation discharge switching valve 70 in the discharge path 9 leading to the finished rice elevator 7 to discharge finished brown rice (Fig. 3).

On the other hand, as for the unhulled rice that is biased toward the shaking down side of the rocking sorting device 6, the sorted unhulled rice in the unhulled area B is moved through the re-hulling path 12 by arranging the movable rice partition plate 8b in accordance with the unhulled area B. The mixed rice that is returned to the huller 2 again by the thrower 11 and sorted into the remaining mixed rice area C is stored in the mixed rice tank 5 by the mixed rice elevator 4 through the re-sorting path 13 and shaken and sorted again. It is circulated and supplied to the device 6 . In this way, as the hulling work progresses, unpolished rice is sorted and discharged as finished brown rice from the unpolished rice area A through the discharge path 9 by the finished rice elevator 5. - 特許庁

The swing sorting device 6 will be described in detail. As shown in the front view (a) and the side view (b) of FIG. 4, a sorting unit in which rocking sorting plates 14 long in the front and rear directions are fixed in multiple stages by both side plates 14a and 14b, and mixed rice is sorted on the upper back side of the sorting unit. A mixed rice distribution unit consisting of a distribution receiving unit 15 that receives and distributes and supplies to each rocking sorting plate 14 is integrally configured, and the sorted rice in the rice area B is re-used on the left side plate 14a that is on the swinging side. A unhulled rice separator 16 leading to a hulling path 12 is provided.

The multistage rocking sorting plates 14 constituting the rocking sorting device 6 are each formed with a large number of sorting recesses 14c. By tilting and swinging left and right while receiving the mixed rice from the receiving gutter 15 for distribution, the grains are sorted by specific gravity with the front end of each side as the sorting end side T. An unpolished rice region A of the unpolished rice layer is formed on the rocking side of the rocking sorting plate 14, a chaff region B of the chaff layer is formed on the rocking side, and a mixed rice region C of the mixed rice layer is formed on the intermediate portion.

As shown in FIG. 5, each rocking sorting plate 14 of the rocking sorting device 6 is provided with a chaff guiding port 17 for taking out the chaff of the chaff region B on the side of the sorting end side T of the chaff region B. A box-shaped unhulled rice separator 16 is attached to the side plate 14a at a position facing the side of the port 17. As shown in FIG. The unhulled rice separator 16 receives the unhulled rice in the unhulled region B of each rocking sorting plate 14 through the unhulled rice guide port 17, where the unhulled rice is separated from the unhulled rice. It is configured to guide the unpolished rice to the re-sorting path 13.

In the unhulled rice separator 16, there are provided perforated plates 16a formed with a large number of perforated holes, which are mesh bodies through which the unhulled rice mixed with the hulls leaks. Below each perforated plate 16a, there is provided a brown rice guide plate 16b for receiving the brown rice that has been leaked and sorted. That is, the perforated plates 16a and the unpolished rice guide plates 16b are arranged alternately in the vertical direction.

On the unpolished rice discharge side of the unpolished rice guide plate 16b, an unpolished rice guide passage 18 through which the unpolished rice discharged from each unpolished rice guide plate 16b is collectively guided is provided. In addition, a paddy guide passage 19 is provided for collectively guiding the paddy that has not leaked through the perforated plate 16a of each stage, and the paddy guide passage 19 and the re-hulling path 12 are communicated.

The unpolished rice guide passage 18 of this embodiment is arranged on the side of the unpolished rice guide plate 16b, and the chaff guide passage 19 is arranged on the front side of the perforated plate 16a.

Each perforated plate 16a and the unpolished rice guide passage 18 are partitioned by a paddy partition wall 16S, and the unpolished rice guide plate 16b and the unpolished rice guide passage 18 communicate with each other. 16b and the chaff guide passage 19 are partitioned by the unpolished rice partition wall 16G. That is, a perforated plate 16a, a brown rice guide plate 16b, a chaff guide passage 19, a brown rice guide passage 18, a chaff partition wall 16S and a brown rice partition wall 16G are provided in the box of the chaff and unpolished rice separator 16.

The unhulled rice in the unhulled region B flows into the perforated plate 16 a of the unhulled rice separator 16 through the unhulled grain guiding port 17 provided for each of the multi-stage swing sorting plates 14 . The unpolished rice mixed in is leaked from the perforated plate 16a, and the unhulled rice remaining on the perforated plate 16a flows into the unhulled rice guiding passage 19 while being prevented from flowing into the unpolished rice guiding passage 18 by the unhulled rice partitioning wall 16S, and is re-hulled. It falls on the road 12 and is guided. In addition, the unpolished rice that has leaked through the perforated plate 16a drops onto the unpolished rice guide plate 16b and is supplied, enters the unpolished rice guide passage 18 while being prevented from flowing into the unhulled rice guide passage 19 by the unpolished rice partition wall 16G, and drops to be re-sorted. You will be guided to Road 13. With this configuration, the unpolished rice mixed with the unhulled rice taken out from the unhulled region B can be sorted out with high accuracy by sorting in each stage without stagnation.

In this case, the unhulled rice separator 16 is provided along the outer side of the side plate 14a, and a long sorting process is formed by the long perforated plate 16a in the front-rear direction. The amount of unpolished rice returned to the rubbing device 2 is reduced, and the amount of unpolished rice that has been rubbed twice can be reduced. Further, the sorted unpolished rice can be rapidly re-sorted through the re-sorting path 13 .

In addition, each unpolished rice guide plate 16b is provided with an inclination angle for sending unpolished rice to the unpolished rice guide passage 18 side below the perforated plate 16a of the chaff guide port 17, so that the leaking sorted grains received from the perforated plate 16a are quickly displaced. It is possible to conduct efficient re-selection without stagnation. In addition, the perforated plate 16a is provided parallel to the rocking sorting plate 14, and like the rocking sorting plate, it is inclined forward and downward, so that the chaff can be smoothly discharged into the chaff guide passage 19.

In addition, by connecting a re-sorting communication portion 18a provided at an angle below the rocking sorting plate 14 to the lower end of the unpolished rice guide passage 18 and communicating the re-sorting communication portion 18a with the re-sorting passage 13, the unhusked rice guide passage 19 By providing the re-sorting communication part 18a behind the , it is possible to simplify the transportation process of the unhulled rice and the unhulled rice separated by the unhulled rice separator 16 .

The receiving gutter 15 for distribution is provided below the mixed rice tank 5, and the mixed rice from the mixed rice tank 5 passes through a transfer gutter part 15a formed in a wide width, and flows from the back side of the multi-stage swing sorting plate 14 to each stage. It is supplied to the distribution gutter 14d for distribution. In order to separate long foreign objects D mixed in the mixed rice, a receiving portion perforated plate 20 having a through hole 20a formed therein is placed in a horizontal position in the distribution receiving gutter 15 shown in the see-through front view including the partial arrow view of FIG. , and a foreign matter discharge port 21 is formed facing the discharge end for discharging the long foreign matter D sideways. Between the discharge end of the receiving part perforated plate 20 and the foreign matter discharge port 21, there is provided a sorting part perforated plate 22 formed with a through hole 22a for leaking the mixed rice and supplying it to the uppermost rocking sorting plate 14. - 特許庁. The perforated hole 22a is formed over the entire width at least on the discharge end side of the receiving part perforated plate 20. As shown in FIG. Almost most of the mixed rice leaks from the receiving perforated plate 20 to the transfer gutter 15a and is transferred toward the distribution gutter 14d, and a transfer rack may be appropriately formed in the transfer gutter 15a.

A leveling valve 23 for adjusting the flow rate is provided on the swinging side of the distribution receiving gutter 15 so that the amount of inflow from the distribution gutter 14d to the swinging sorting plates 14 of each stage can be made uniform. In addition, although the succeeding sorting section perforated plate 22 has a short section, it is inclined slightly upward toward the foreign matter discharge port 21 to delay the transfer of the long foreign matter D and allow the remaining mixed rice to leak down.

The receiving perforated plate 20 having the above-described configuration distributes and supplies the mixed rice received from the mixed rice tank 5 to the swinging sorting plates 14 by swinging and leaking down to the mixed rice flow-down plate 15a below. The long foreign matter D in the mixed rice remaining on the perforated plate 20 of the receiving part is moved to the end side by the rocking motion. The long foreign matter D further moves to the perforated plate 22 of the sorting section, and the mixed rice mixed with the long foreign matter D leaks down and is supplied to the rocking sorting plate 14 on the uppermost stage. It is discharged from the outlet 21 . Therefore, the simple configuration of the receiving part perforated plate 20 and the sorting part perforated plate 22 can sequentially discharge long foreign objects D such as straw scraps.

In this case, by arranging the sorting section perforated plate 22 at a position facing the rocking sorting plate 14 on the uppermost stage, the mixed rice can be supplied to the rocking sorting plate 14 without requiring a special guide member. can. In addition, the perforated plate 22 of the sorting section is inclined upward to the foreign matter discharge port 21, thereby suppressing the movement of the long foreign matter D and surely leaking the mixed rice.

As shown in the exploded perspective view (a) and the side view (b) of FIG. A receiving plate portion 24b is provided so as to be openable in an opening formed in an overhanging portion 24a of an exterior cover 24 covering the back side of the plate 14. - 特許庁That is, the receiving plate portion 24b forms a part of the exterior cover 24. As shown in FIG.

The foreign object receiver 21D supports the receiving plate 24b with a hinge or the like so that it can be opened, thereby preventing foreign matter from entering from the outside when closed, and at the same time, the long length separated from the mixed rice received in the mixed rice distributing portion is provided. The foreign matter D is received from the foreign matter discharge port 21 and stored. By rotating the receiving plate portion 24b at a side position of the machine body to open the foreign matter D, the receiving plate portion 24b acts as an inclined guide and is dropped out of the machine. The stored foreign matter D can be stored in a lower storage member (not shown) without touching it.

In this case, by providing the partition 24c surrounding the opening formed in the projecting portion 24a, scattering of the foreign matter D received by the receiving plate portion 24b can be prevented.

The transmission structure of each part of the hull sorter by the drive motor 25 (Fig. 8) is transmitted from the motor 25 through the first belt 26 to the roll shaft 2c that supports the hull rolls 2a and 2b of the huller 2, From the roll shaft 2c through the second belt 27, the swing shaft 28a of the sludged rice transfer shelf 28, the interlocking shaft 4a of the mixed rice elevator 4, the second spiral shaft 29, and the swing crankshaft of the swing sorter 6 6b etc. From the interlocking shaft 4a of the elevator 4 through the third belt 30, the interlocking shaft 4a of the mixed rice elevator 4 and the mixed rice spiral shaft 31 are transmitted, and from the second spiral shaft 29 through the fourth belt 32, It is transmitted to the fan shaft 3c of the suction blower 3b, transmitted from the interlocking shaft 6a of the oscillating sorting device 6 to the oscillating crankshaft 6b via the fifth belt 33, and interlocked with the finished rice elevator 7 via the sixth belt 34. It is a form that transmits power to the shaft.

Next, based on FIGS. 9 and 10, the configuration for transferring mixed rice and the configuration for processing leftover rice will be described. The mixed rice spiral shaft 31 is arranged in a mixed rice transfer trough 35, and receives the sludged rice flowing down from the sludged rice transfer shelf 28 of the hulling device 2 and the mixed rice in the re-sorting path 13, and mixes the mixed rice. It is configured to be transferred to the rice elevator 4 . A plurality of buckets 4b, 4b, . is set up behind the The transfer end side of the mixed rice transfer gutter 35 is connected to the lower end side of the mixed rice elevator 4 . The connection part 35a of the mixed rice transfer gutter 35 is fixed on the grain scooping side (lowering process side) of the buckets 4b, 4b, . The transferred mixed rice is configured to flow down and be guided to the lower part of the mixed rice elevator 4 from the communicating opening to the lower end side wall of the mixed rice elevator 4 . The bottom inner surface of the mixed rice elevator 4 is provided with a guide surface directed into the bucket 4b.

An on-off valve 36 is provided along the conveying direction of the mixed rice transfer trough 35 so that the bottom of the mixed rice transfer trough 35 can be opened and closed, and the leftover rice accumulated at the bottom of the transfer trough 35 can be discharged. Below the on-off valve 36, a leftover rice receiving box 37 is provided as a leftover rice receiving portion for receiving the discharged leftover rice.

The mixed rice elevator 4 is erected behind the machine body of the rice huller 1 with the second belt 27 therebetween, i.e., behind the rear cover 38 covering the rear of the machine body at an appropriate distance. The end side of the transfer trough, which is the connecting portion 35a of the mixed rice transfer trough 35, is also located behind the machine body, and the bottom opening provided in the mixed rice transfer trough 35 and the corresponding on-off valve 36 is a structure arranged in the section inside the fuselage.

A first air nozzle 40 is arranged below the mixed rice elevator 4 . As shown in FIGS. 9 and 10, the first air nozzle 40 is attached to the side wall on the side opposite to the side where the mixed rice transfer gutter 35 is connected. It is set obliquely downward toward the bottom of the fumarolic plate 67 at the bottom of the rice elevator 4 . The air is jetted intermittently, and the jetting timing is adjusted to the timing when the scraper 4s attached to the endless belt 4c passes the bottom surface of the mixed rice elevator 4. As shown in FIG. With this configuration, when the air is jetted, it collides with the scraper 4s, and the effect of blowing up the mixed rice can be promoted, and the efficiency of scooping up by the bucket 4b can be improved.

Compressed air is supplied to the first air nozzle 40 through a connection hose 42 from a compressor 41 installed in front of the hull sorter 1 .

As described above, since the first air nozzle 40 is provided, the remaining rice on the bottom of the mixed rice elevator 4 is sprung up by the air jet from the nozzle after the end of the hull sorting operation, and scooped by the buckets 4b, 4b, . . . Efficient lifting.

In addition, a second air nozzle 43 is provided at the connecting portion 35a of the mixed rice transfer gutter 35 and the mixed rice elevator 4. As shown in FIG. The second air nozzle 43 is attached to the upper wall portion of the mixed rice transfer gutter 35, and is provided so that the nozzle blowing direction is directed to the upper transfer direction opposite to the transfer direction (b) by the mixed rice spiral shaft 31. The support 44 of the second air nozzle 43 is composed of a base plate 44a and an upward bulging portion 44c having a nozzle mounting surface 44b. It is fitted accordingly. The nozzle mounting surface 44b has an angle .alpha.

Since the second air nozzle 43 is provided in this manner, after the hull sorting operation is completed, the on-off valve 36 is opened while the mixed rice spiral shaft 31 and the mixed rice elevator 4 are driven, and air is jetted from the second air nozzle 43. As a result, the mixed rice about to be transferred to the transfer end side of the mixed rice transfer gutter 35 can be collected in the residual rice receiving box 37 through the opening of the on-off valve 36 . Since the connecting portion 35a of the mixed rice transfer trough 35 does not have an on-off valve 36, the residual rice is moved to a location where the on-off valve 36 exists by blowing air in the direction opposite to the transfer direction by the second air nozzle 43. It is possible to reduce the amount of leftover rice as much as possible.

Further, a third air nozzle 45 is provided at the starting end side of the mixed rice transfer gutter 35 toward the mixed rice transfer direction, and a fourth air nozzle 46 is provided at the bottom of the finished rice elevator 7 . The third air nozzle 45 promotes the downward discharge of residual rice in the mixed rice transfer trough 35 from the on-off valve 36 . In addition, since it is mounted using the inspection cover 47 mounted on the front surface of the machine body, inspection and replacement work can be easily performed. A support portion 48 having a base plate 48a and a nozzle mounting surface 48b is mounted. The fourth air nozzle 46 raises the residual rice on the bottom of the finished rice elevator 7 to improve the efficiency of raking the bucket.

Next, an explanation will be given of the air jetting means provided to promote discharge of the long foreign matter D from the side portion of the distribution receiving gutter 15 through the foreign matter outlet 21. FIG. As shown in FIG. 6, the distribution receiving trough 15 is provided with a cover 15b, and the cover 15b is formed with a receiving port 15c that faces below the discharge port of the mixed rice tank 5. As shown in FIG. Above the sorting section perforated plate 22 as an auxiliary transfer plate for transferring the long foreign matter D between the transfer end portion of the receiving section perforated plate 20 and the foreign matter discharge port 21 on the side, a grain scattering prevention plate 50 is suspended. are provided in the form of The anti-scattering plate 50 also has a function of correcting the uneven distribution of the long foreign matter D at its lower side and evenly distributing it in the width direction. Further, a fifth air nozzle 52 is provided for ejecting air obliquely from above toward the foreign matter discharge port 21 against the long foreign matter D accumulated in the foreign matter reservoir 51 formed on the upper surface of the perforated plate 22 of the sorting section. The fifth air nozzle 52 is attached to the cover 15b via a support 53, and has a jetting direction 52j directed toward the foreign object discharge port 21. Therefore, the fifth air nozzle 52 is directed toward the long foreign object D transported in front of the foreign object discharge port 21. Air is ejected, and discharge from the foreign matter discharge port 21 can be accelerated. In addition, since the long foreign matter D near the foreign matter discharge port 21 can be diffused by blowing air, the long foreign matter D can be loosened in combination with the swinging of the perforated plate 22 of the sorting section, and the leakage of the mixed rice can be promoted. In particular, the mixed rice that scatters due to the jet of air collides with the scatter prevention plate 50 and can drop to the perforated plate 22 of the sorting section.

In the above example, a single air nozzle 52 is used as the discharge assisting means, but a plurality of air nozzles may be arranged in the width direction, and as shown in FIG. A configuration in which an air cylinder 54 configured to eject air may be provided. The length of the air cylinder 54 is formed to cover the entire width of the perforated plate 22 of the sorting section. An air ejection direction 54j of the air cylinder 54 is directed toward the foreign object discharge port 21. As shown in FIG.

When the air nozzle 52 or the air cylinder 54 is provided as the air ejection means, intermittent air ejection is superior in terms of the effect of blowing up and loosening the long foreign matter D, and is convenient for expediting the discharge. Further, it is effective to synchronize the timing of this intermittent ejection with the swing motion of the swing sorting device 6 . That is, the distribution receiving gutter 15 is integrally formed with the swinging sorting plate 14 and swings obliquely up and down from the swinging bottom dead center to the swinging top dead center in synchronism. is set at the time of reaching the top dead center of the tilting swing of the swing sorting device 6, immediately before reaching the top dead center, or immediately after reaching the top dead center. At the time of switching from the swinging top dead center to the bottom dead center side and before and after that, a large amount of the long foreign matter D tends to be discharged from the foreign matter discharge port 21. By setting the timing of intermittent jetting, it is possible to perform effective discharge and prevent excessive accumulation of long foreign matter D in the foreign matter storage section 51 on the upper surface of the perforated plate 22 of the sorting section. The configuration for intermittently ejecting air is a configuration in which an air valve, which will be described later, can be electrically turned on and off. , so that air can be ejected intermittently.

In this embodiment, transfer from the terminal end of the receiving part perforated plate 20 to the foreign object discharge port 21 is configured by the sorting part perforated plate 22. It is good also as a structure of the bottom plate 22a of a hole. Even if the non-porous bottom plate 22a is used, similarly to the perforated plate 22 of the perforated sorting section, the long foreign matter D in the foreign matter storage portion 51 formed in the upper portion of the bottom plate 22a is moved to the foreign matter discharge port 21 in combination with the rocking motion (d). can be transported to When the bottom plate 22a is non-perforated, a structure for separating the mixed rice remaining in the long foreign matter D after passing through the foreign matter discharge port 21 is added.

As described above, the long foreign matter D reaching the foreign matter storage portion 51 on the screening portion perforated plate 22 (or the bottom plate 22a) accompanied by the oblique up-and-down reciprocating rocking motion (d) of the distribution receiving portion 15 is While the foreign matter can be discharged from the foreign matter discharge port 21 when the foreign matter has accumulated more than a certain amount, excessive accumulation is likely to occur depending on the amount of foreign matter. The ejection of the long foreign matter D from the foreign matter discharge port 21 can be accelerated by the air blowing toward 21, and thus the excessive accumulation of the long foreign matter D can be prevented, and the long foreign matter D can be processed smoothly.

Further, by intermittently blowing air and setting the timing to near the rocking top dead center, the above effects can be obtained. is provided on the lower surface of the perforated plate 22 of the sorting section, the state of excess accumulation can be detected with high accuracy, and after this detection, intermittent blowing of air can be continued until the excess accumulation is eliminated.

FIG. 11 is a plan view of the dust collecting duct 64. The dust collecting duct 64 is arranged above the rocking sorting plate 14, connected to the unpolished rice tank 7a of the finishing elevator 7 at the beginning, and connected to the suction blower at the end. The upper surface of the dust collecting duct 64 is formed with an outside air intake port 55, which includes a rear dust collecting duct 62 and a front dust collecting duct 63 directed to the front and rear of the suction blower 3b at the lower part thereof, and leading to the brown rice tank 7a of the finished rice elevator 7. 64 are connected. That is, the dust collecting duct 64 is configured to branch into the rear dust collecting duct 62 and the front dust collecting duct 63 from the middle.

An opening cover 56 consisting of an intake plate 56a having a slit-shaped hole and an adjusting plate 56b sliding thereon to adjust the degree of opening of the slit-shaped hole is attached to the outside air intake port 55 with a hinge screw 57. As shown in FIG. Therefore, when the hinge screw 57 is removed and the opening cover 56 is removed, the outside air intake port 55 is opened wide and the inside of the dust collecting duct 64 can be cleaned. The opening lid 56 is desirably provided at a position straddling the rear dust collection duct 62 and the front dust collection duct 63 .

The inside of the dust suction duct 64 becomes a dust suction passage 66 , and a sensor box 65 serving as the suction wind sensor 10 is provided in this dust suction passage 66 . A support shaft 10b is passed through the sensor box 65 in the front-rear direction, a pressure-sensitive plate 10a is fixed to the support shaft 10b and hung thereon, and a display needle 10c is fixed to the front protruding portion of the support shaft 10b. When the pressure-sensitive plate 10a is shaken by the wind pressure, the operator can visually recognize the suction wind force from the front of the hull sorter 1 as the movement of the display needle 10c.

The suction force sensor 10 is provided closer to the start end than the outside air intake port 55, so that the dust suction capacity of the dust suction duct 64 can be reliably detected.

A limit detection sensor 10e is provided in the suction wind force sensor 10, and when the limit detection sensor 10e detects the limit wind force for a predetermined time or longer, the drive motor 25 of the hull sorter 1 is stopped. As a result, the unpolished rice can be prevented from being discharged from the rice husk duct 3a together with the rice husk.

The suction blower 3b of the wind selection unit 3 also sucks dust generated in the brown rice tank 7a of the rice elevator 7 through the dust suction passage 66, but the suction wind force sensor 10 measures the wind force of the suction wind passing through the dust suction passage 66. , the suction force of the suction blower 3b is estimated. Since the amount of dust sucked in the dust suction path 66 is small, dust is less likely to accumulate on the suction wind sensor 10, the frequency of cleaning and maintenance of the suction wind sensor 10 is low, and the hull sorter can be used stably for a long time. .

In addition, the suction wind sensor 10 can notify the operator on the side of the hull sorter 1 that the pressure sensitive plate 10a receives the suction wind pressure and rotates together with the support shaft 10b as the movement of the display needle 10c. .

In addition, the amount of intake air of the opening lid 56 provided at the outside air intake port 55 of the suction blower 3b of the wind selector 3 can be adjusted while looking at the suction wind sensor 10 nearby.

Further, the amount of air sucked by the suction blower 3b sucked from the outside air suction port 55 can be adjusted simply by sliding the adjustment plate 56b with respect to the suction plate 56a of the opening lid 56. FIG.

Further, by removing the opening lid 56 and opening the outside air intake 55 widely, maintenance such as inspection and cleaning of the inside can be easily performed. In particular, it is possible to remove leftover rice from the rear dust-sucking duct 62 and the front dust-sucking duct 63 where brown rice tends to accumulate.

The suction wind force sensor 10 of this embodiment is useful because it can measure the wind force when the relay fan 80 is connected to the rice husk duct 3a.

FIG. 13 is an automatic control flowchart of the rice huller 1. When the operation switch is turned on in step S1 to start operation, in step S6 the weight sensor of the mixed rice tank 5 detects a predetermined weight or more, and in step S7 The circulation discharge switching valve 70 is switched to the discharge side to discharge the finished brown rice in step S8, and when the weight sensor of the mixed rice tank 5 detects that the weight is less than a predetermined weight in step S9, the circulation discharge switching valve 70 is switched to the circulation side in step S10. Then, in step S11, the remaining rice disposal operation is started, and in step S12, after a predetermined time has elapsed, the circulation discharge switching valve 70 is switched to the discharge side in step S13, and the remaining rice discharge operation is performed in step S14.

In the residual rice discharge operation, the continuous tornado is changed to the intermittent tornado in step S16 until the set time for the residual rice discharge operation in step S17, for example, 3 minutes, elapses. stop driving.

In the manual operation, when the discharge switching valve 70 is switched to the discharge side, continuous blowing is performed for a predetermined time, and then intermittent blowing is performed.

In addition, if the circulation discharge switching valve 70 is switched to the circulation side, and continuous tumbling or intermittent tumbling is performed, the disposal of leftover rice is accelerated. Also, an air filter valve is provided on the finish rice elevator 7 side of the rocking sorter 6 .

1 rice hull sorter 2 hull huller 3 wind sorter 3a rice husk duct 3b suction blower 6 rocking sorter 7 finished rice elevator 7a brown rice tank 10 suction wind sensor 10a pressure sensitive plate 10b spindle 10c indicator needle 10e limit detection sensor 25 Drive motor 55 Outside air intake port 56 Opening lid 56a Intake plate 56b Adjustment plate 66 Dust collection path

Claims (3)

The rice hulled by the rice huller (2) is sent to the rocking sorting device (6), and the rice husk is sucked by the suction blower (3b) of the air sorting section (3) and discharged out of the machine through the rice husk duct (3a). Then, in the hull sorter (1) that sends the brown rice sorted by the swing sorting device (6) to the brown rice tank (7a) by the finished rice elevator (7),
A dust suction duct (64) connecting the brown rice tank (7a) and the suction blower (3b) is provided,
The dust collecting duct (64) branches into a rear dust collecting duct (62) and a front dust collecting duct (63) extending forward and backward of the suction blower (3b),
A suction wind sensor (10) for detecting suction wind is provided in a dust suction passage (66) in a dust suction duct (64) ,
An outside air intake port (55) is provided on the top surface of the dust collecting duct (64), and an opening lid (56) for adjusting the intake air is provided in the outside air intake port (55), and the opening lid (56) is closer to the dust collection start end. A suction wind sensor (10) is provided in
The opening lid (56) is composed of an intake plate (56a) having a plurality of slit holes and an adjustment plate (56b) that slides on the intake plate (56a) to adjust the degree of opening, and the opening lid (56) is provided at a position straddling the rear dust collection duct (62) and the front dust collection duct (63),
A rice huller and sorter characterized in that the opening lid (56) is detachable from the outside air inlet (55) . The suction wind force sensor (10) is a pressure sensing plate (10a) suspended from a support shaft (10b), and a display needle (10c) attached to the support shaft (10b) is visible from outside the machine. The hull sorter according to claim 1. A limit detection sensor (10e) is provided in the suction wind force sensor (10), and when the limit detection sensor (10e) detects a limit wind force for a predetermined time or longer, the driving motor (25) of the rice huller (1) is stopped. The rice huller and sorter according to claim 1 or 2, characterized in that:

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