JP2001104809A - Dust suction device for grain lifting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the dust removal performance of an unpolished rice lifting machine of a chaff separator. SOLUTION: When grains are thrown together with the grain lifting wind from a thrower cylinder 30 of the unpolished rice lifting machine 5 into a dust suction box 31, the lifted grains fall and flow down to a funnel section 33. The grain lifting wind flows along the circulating dust suction wind paths in the upper part, rear side part and lower part on the outer periphery of the funnel section 33 within the dust suction box 31, flows into a dust discharge cylinder 38 from the terminal of the circulating dust suction wind paths and is discharged outside the machine. The wind flowing in the circulating dust suction wind path in the lower part of the funnel section 33 flows across from the rear side to the front side of the grains falling from the funnel section 33 and sucks and removes the dust from the entire area of the downflow grains.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust discharge device for a grain-lifting machine implemented in a hulling sorter or the like.

[0002]

2. Description of the Related Art In a thrower-type grain fryer, as an apparatus for removing dust from fried grains, for example, Japanese Utility Model Laid-Open No.
There is a technique disclosed in JP-A-6-87134. This technology adopts a configuration in which grains are taken out of the machine from a bent grain ejecting cylinder at the upper end of a thrower-type grain fryer, and a wind guide tube is arranged along the outside or inside of the grain ejecting cylinder. In this configuration, the end of the air guide tube is connected to a suction fan to remove dust from the grain.

[0003]

In the above-mentioned prior art, the suction wind acts on the left and right sides in the direction in which the grain is raised in the frying direction, so that dust is absorbed. However, there is a problem that it is difficult to absorb dust from a grain of the corn or a grain on the opposite side which is far away, and the dust absorbing performance is not improved. Further, in the above-described configuration, there has been a problem that bran and dust stagnate in a portion of the grain ejection cylinder where suction air does not act. The tendency is remarkable in the corner portion of the reflector for flowing the grain. Therefore, an object of the present invention is to exert a dust-absorbing action on the whole of the grain, improve the dust-absorbing performance of the grain, and prevent stagnation of bran and dust in the cylinder.

[0004]

SUMMARY OF THE INVENTION In order to solve such problems, the invention of claim 1 relates to a thrower cylinder 30 in which the grains at the upper end of the thrower type grain fryer 5 are fried. , A dust-absorbing box 3 into which the kernels are to be charged from the thrower cylinder 30
1, a dust-discharging cylinder 38 connected to the dust-absorbing box 31 for discharging dust, a grain flow-down passage 34 through which the fried grains arranged in the dust-absorbing box 31 pass, and the dust-absorbing box 30 And a circulating dust-absorbing air passage circulating around the outer periphery of the grain flowing-down passage 34.The wind flowing through the circulating dust-absorbing air passage flows across the grains flowing down from the grain flowing-down passage 34, According to a second aspect of the present invention, the start end of the dust tube 38 is connected to a dust tube connection port 41 opened in the dust joining plate 42. Then, the dust exhaust plate 42 is attached to the thrower cylinder 30, the dust exhaust joint plate 42 is detachably attached to the dust suction side opening of the dust suction box 31, and the dust suction box 31 is detachably attached to the thrower cylinder 30. And the thrower cylinder Removing the dust suction box 31 from 0, Surowa tube 30, dust-exhaust junction plate 42 and dust-exhaust cylinder 38
Are integrally separated from the dust-absorbing box 30.

[0005]

According to the first aspect of the present invention, when the grains are thrown from the thrower cylinder 30 into the dust-absorbing box 31 together with the grain-lifting wind, the grains are passed through the grain downflow passage 34.
In addition, the grain-lifting wind passes through the grain flow passage 34 in the dust-absorbing box 31.
The air flows along the circulation dust suction air path on the outer periphery, and flows from the end of the circulation dust suction air path toward the dust discharge tube 38. At this time, the lifting wind flows across the grain flowing down from the grain downflow passage 34 from the rear side to the front side to absorb and remove dust adhering to the grain.

[0006] As described above, the wind flowing through the circulating dust-absorbing air path flows across the grains flowing down the funnel portion 33 in the dust-absorbing box 31 to absorb dust, so that the dust-absorbing performance can be improved. In addition, stagnation of bran and dust in the dust-absorbing box 31 can be prevented by flowing the fried wind through the dust-absorbing box 31. In particular, when the grain is interrupted at the corner of the reflector plate to be shelved to promote the separation of the grain and dust, the wind can directly act on this corner to prevent stagnation of the bran dust. it can.

In the invention of claim 2, the thrower cylinder 3
When the dust-absorbing box 31 is removed from the
0, the dust cylinder 38 and the dust joining plate 42 are all
A relatively large opening is formed in the dust-absorbing portion of the dust-absorbing box 31 separated from the dust-absorbing box 1 so that the inside of the dust-absorbing box 31 can be easily cleaned and maintained.

[0008]

Embodiments of the present invention shown in the drawings will be described below. First, the overall configuration of the hulling sorter will be described with reference to FIG.

The rice hulling sorter includes a rice hulling unit 1 and a rice hulling unit 2 that wind-selects the rice hulled from the hulling unit 1. And a rice milling machine 4, a rocking and sorting unit 3, a mixed rice fryer 4, a brown rice fryer 5, and the like.

The hulling unit 1 includes a hulling hopper 6, a hulling roll 7,
7 comprises a hulling room 8 and the like. The sliding rice style selection unit 2 includes a sliding rice style selection box 9, a sliding rice style selection path 10, a pity trough 11, a sliding rice trough 12, a suction fan 13, and a dust tube 1.
4 and the like.

Next, the swing sorting section 3 will be described. The multi-stage swing sorting plates 15, 15,... Are provided with sorting unevenness on the plate surface. One side in the vertical direction is a high supply side, the other side is a low discharge side, and one side in the horizontal direction. Is a high swinging upper side, and the opposite side is a low swinging side, the swing sorting plate 15 is configured to be inclined in both the vertical and horizontal directions, and the swing sorting plates 15, 15,.
Is a swinging device comprising a swinging arm, a swinging link and the like, which is reciprocally swinged obliquely up and down in the horizontal direction.

A supply port is formed on the supply side of the oscillating sorting plates 15, 15,..., And mixed rice from the mixed rice fryer 4 is passed through a distribution supply gutter 16 and a distribution case 17. This is a configuration supplied from the supply port. Swing sorting plate 1
In the mixed rice supplied to 5,15, ..., small brown rice with a heavy specific gravity is distributed in a non-uniform flow on the upper side due to the relationship between the size of the granules, the specific gravity, and the friction coefficient. Then, the paddy having a large specific gravity has a drift distribution on the swinging side, and a mixed rice of unseparated paddy / brown rice is selected and distributed in an intermediate portion thereof. Thus, these sorted grains are separated and taken out by the brown rice partitioning plate 18 and the paddy partitioning plate 19 provided on the discharge side of the swinging sorting plate 15.

The extracted brown rice is taken out of the machine through a brown rice extraction gutter 20, a brown rice channel 21, and a brown rice milling machine 5, and the mixed rice is a mixed rice extraction gutter 22, a mixed rice channel 23, and a slide. After the falling rice trough 12, the mixed rice fryer 4, the mixed rice hopper 24, the distribution supply gutter 16, and the distribution case 17, the swinging sorting plate 15,
, And are re-sorted. Further, the extracted paddy is lifted and returned to the hulling unit 1 via the hulling discharge gutter 25, the hulling channel 26, and the hulling machine 27, and the hulling is performed again.

Next, the operation of the hulling sorter will be described. When the hulling operation is performed, the hulling is supplied to the hulling hopper 6 of the hulling unit 1 and the rotating parts of the hulling sorter are driven. Next, the paddy is supplied from the paddy hopper 6 to the paddy rolls 7, 7 and padded, and the paddy rice is wind-selected on the padded rice paddy path 10 below. The light rice husks are discharged outside the machine through the suction fan 13 and the dust tube 14, and the relatively light pity grains are dropped and sorted into the pity receiving trough 11, and the mixed rice of heavy brown rice and rice is dropped into the sliding rice receiving trough 12. Drop sorted.

The mixed rice thus selected is supplied to the swinging sorting plates 15, 15,... Via the mixed rice fryer 4, the mixed rice hopper 24, the distribution supply gutter 16 and the distribution case 17. When the oscillating selection plate 15 is reciprocally oscillated up and down in the horizontal direction, the mixed rice is sorted according to the relationship between the size of the grain, the specific gravity, the friction coefficient, and the like. Small, heavy brown rice has a drift distribution on the upper side, and large, lighter paddy rice has a drift distribution on the lower side compared to brown rice, and unseparated mixed rice is distributed in the middle. It is sorted while doing.

The grains flowing down from the discharge side of the swing sorting plates 15, 15,... Are separated by a brown rice partition plate 18 and a paddy partition plate 19. The brown rice separated by the brown rice partitioning plate 18 is taken out of the machine through a brown rice take-out gutter 20, a brown rice channel 21, and a brown rice milling machine 5. The mixed rice partitioned by the brown rice partition plate 18 and the paddy partition plate 19 is mixed with the mixed rice extraction gutter 22 and the mixed rice channel 2.
3, mixed rice frying machine 4, mixed rice hopper 24, distribution supply gutter 1
After passing through 6 and the distribution case 17, it is supplied to the swing sorting plate 15 and is sorted again. In addition, the paddy partitioned by the paddle partitioning plate 19 is returned to the paddy section 1 through the paddy discharge gutter 25, paddy channel 26, and paddy mill 27, and padding is performed again.

Next, with reference to FIG. 2 to FIG. 7, the dust discharging configuration of the thrower type brown rice fryer 5 will be described. 2 is a cutaway side view of the main part, FIG. 3 is a cutaway side view of the main part, FIG. 4 is a perspective view of the main part, FIG. 5 is a side view of the main part, FIG. 6 is a side view of the main part, and FIG. It is a perspective view of a principal part.

The thrower-type brown rice fryer 5 has a fry blade 28
, A duster box 30 connected to the upper end of the graining chamber 29, a dust box 31 connected to the upper end of the thrower cylinder 30, and a dust box 3
1 is constituted by a grain take-out cylinder 32 connected to the lower end.

Next, the internal structure of the dust box 31 will be described. The dust-absorbing box 31 is provided with a funnel section 33 into which grains are introduced, facing the grain-projecting section of the thrower cylinder 30, and a bent grain downflow passage 34 is provided at a lower end of the funnel section 33.
And the lower end of the grain flow-down passage 34 communicates with the upper end of the grain take-out cylinder 32.

Between the rear plate 31a of the dust suction box 31 on the side away from the thrower cylinder 30, the funnel part 33 and the rear plate of the grain flow passage 34, a post-dust air passage 35 through which the wind of the grain passes is formed. The lower end of the post-dust passage 35 communicates with a pre-dust suction guide passage 36 that guides the wind to the front side, and a dust suction lower wind passage 37 is provided below the funnel 33 so as to move upward. The rear end of the lower wind path 37 and the front end of the pre-dust suction guide air path 36 communicate with each other through a grain flow-down passage 34. Further, the front side of the dust-absorbing lower air passage 37 faces the start end of the dust-cylinder 38, and the end of the dust-cylinder 38 is connected to the suction fan 13 at the front of the body to discharge dust. In this embodiment, a reflecting plate 36a forms a pre-dust suction guide air passage 36 and extends to the lower end of the grain flow passage 34.

In the dust-absorbing box 31, a dust-absorbing air path 39, a dust-absorbing air path 35, and a dust-absorbing guide air path 36 along the lower side of the upper plate 31b of the dust-absorbing box 31 are provided. Are formed.

Therefore, when the grains and the wind are thrown into the dust-absorbing box 31 by the thrower cylinder 30, the wind passes through the dust-absorbing air passage 39, passes through the dust-absorbing air passage 35, and the pre-dust-absorbing guide air passage 36. Then, the grain flowing down the grain flow passage 34 crosses from the rear side to the front side, and then flows from the dust suction lower air passage 37 to the dust cylinder 38 by the suction force of the suction fan 13, The air is discharged from the end through the suction fan 13 to the outside of the machine. At this time, when a part of the fried grain flows into the air passage 35 after the dust is absorbed together with the fried wind, the corner portion 36b of the reflector 36a is formed.
In the meantime, when the grain is stagnated, dust such as bran and dust also stagnates.
Acts on the corner portion 55a to fly grains, bran, dust and the like.

As described above, since the circulating wind flows across the falling grains in the dust-absorbing box 31, the dust-absorbing performance of the falling grains is improved. In addition, since the flow of the kernel and the flow of the wind are divided, the flow speed of the kernel is reduced, and the removal performance of bran and dust is reduced in conjunction with the crossing of the circulation wind to the kernel. It is to improve. Further, the dust-absorbing box 3 removes grains, bran, dust, etc. stagnating in the corners 36b of the reflection plate 36a.
The stagnation of the bran and dust in 1 can be prevented.

Next, the assembling structure of the thrower cylinder 30, the exhaust cylinder 38 and the dust box 31 will be described. At the upper part of the thrower cylinder 30, a thrower joining plate 40 is fixed, and below the mounting position of the thrower joining plate 40 of the thrower cylinder 30, a dust joining plate 42 having a dust exhaust tube connection port 41 is attached. The dust collector 38 is attached via the left and right attachment bodies 43, 43, and the start end of the dust cylinder 38 is fitted and connected to the dust cylinder connection port 41 of the dust joint plate 42.

At the lower front part of the dust-absorbing box 31, left and right mounting plates 44, 44 are provided extending, and the mounting bodies 43, 43 are provided.
Are joined to the inner surfaces of the left and right mounting plates 44, 44,
Installed with bolts and nuts. In addition, 4 in FIG.
3a and 43a are bolt insertion holes.

When the thrower connecting plate 40 on the side of the thrower cylinder 30 is mounted so as to close the opening of the funnel section 33 on the side of the dust-absorbing box 31, the upper end of the thrower cylinder 30 is placed inside the funnel section 33. With the inserted
While being joined to the funnel part 33 in a sealed state, the dust joining plate 42 on the side of the thrower cylinder 30 is joined in a sealed state to the front end opening of the dust-absorbing lower air passage 37 on the dust-absorbing box 31 side.

When the dust-absorbing box 31 is removed from the thrower tube 30, the thrower connecting plate 40, the dust-connecting plate 42, and the dust discharging tube 38 are also removed together with the thrower tube 30. Lower wind path 3
7 is removed in a state where an opening is formed in the front part, so that cleaning and maintenance of the dust suction box 31 can be easily performed.

Further, the dust tube 38 is constituted by a pipe made of a flexible material, the starting end of the dust tube 38 is removed from the dust tube connection port 41, and an adapter (shown in the figure) is attached to the end of the dust tube 38. (Omitted), connecting an extension pipe (not shown)
Dust can be absorbed from the extension pipe, and the area around the machine can be cleaned.

Further, as shown in FIG.
At the lower end of the funnel portion 33 in 1, a grain flat plate 45 may be provided. With this configuration, the layer thickness of the grains flowing down from the funnel section 33 to the grain downflow passage 34 is made equal in the left and right directions, and the downflow speed of the grains is reduced, so that dust in the grains is efficiently removed. be able to.

In forming the grain flow passage 34 in the dust box 31, if the bottom plate 34 a is made of a perforated iron plate, a net, or the like, the lower dust-absorbing air passage 37 from the perforated iron plate or the like can be used. The dust can be removed by suction, and the dust absorbing performance is improved.

Further, as shown in FIG.
May be configured to be freely openable and closable by supporting a dust suction wind adjustment plate 46 at the start end side of the hood. With this configuration, when the dust suction air adjusting plate 46 is adjusted downward to narrow the dust suction air passage, the flow speed of the dust suction air is increased and a large amount of dust can be removed.

Further, as shown in FIG.
1, a guide air path adjusting plate 47 is provided at the lower end of the pre-dust suction air guide path 36 so as to be slidably adjustable.
It may be adjusted in accordance with the grain flow rate of No. 4, or may be completely closed.

When the pre-dust suction guide air passage 36 is completely closed, the dust suction force can be increased, the inside of the dust suction box 31 can be cleaned cleanly, and the grain flow-down passage 3 can be cleaned.
When the amount is adjusted in accordance with the amount of the grain of No. 4, the entire amount of the falling grain can be made closer to the start end side of the dust-absorbing lower air passage 37, and the dust can be efficiently absorbed and removed from the grain.

The upper end of the reflection plate 36a may be pivotally supported by a hinge (not shown), and may be urged to rotate upward by a spring (not shown). With this configuration, when the grain amount is large, the reflection plate 36
When a rotates downward, the air path width increases, and when the amount of grain is small, the air path rotates upward and the air path width decreases. Then
When the reflecting plate 36a is rotated in a substantially vertical state, the air passage 3
The dust stagnating in the drop 5 can be dropped to clean the air path.

Further, as shown in FIG.
1 right mounting plate 44 on the side of the end of the dust suction lower air passage 37
Is provided with a dust absorption wind adjustment hole 48,
The opening of 8 may be adjusted by the wind control valve 49. With this configuration, it is possible to inspect the inside from the dust suction wind control hole 48, check the connection state between the dust discharge tube 38 and the dust suction box 31, and to check the wind control valve 4.
9 allows the wind to be absorbed to be adjusted, thereby preventing the discharge of grains.

Further, as shown in FIG.
Between the end portion of the dust exhaust tube connecting port 41 of the dust joining plate 42 and
Grain storage part 5 surrounded on both sides by left and right mounting plates 44,44
0, the storage bottom plate 51 can be detachably opened and closed, or the storage bottom plate 51 is supported by a hinge so that the storage bottom plate 51 can be opened by the weight of the kernel so that the storage kernel can be taken out.

In connecting the dust discharge tube 38 to the suction fan 13, as shown in FIG. 5, the start end side of the dust discharge tube 38 is arranged along the rear end edge of the swing sorting unit 3 from above to below. And
Next, the halfway portion is arranged from the rear to the front at the bottom of the fuselage, and the terminal end is connected to the suction portion of the suction fan 13 via the grain storage chamber 52.

Then, on the side plate of the grain storage chamber 52,
As shown in FIG. 6, the dust suction wind adjustment window 53 is opened, and a transparent inspection lid 54 is slidably mounted.
The opening amount is adjusted. Thus, by checking the inflow from the dust discharge tube 38 to the suction fan 13 and adjusting the opening amount of the dust suction wind adjustment window 53,
It is possible to prevent the grains from scattering to the suction fan 13.

The grain collecting chamber 52 is provided with a grain sensor (not shown) for detecting the scattering state of the grain, and notifies the detection information of the grain sensor to a display unit (not shown).
When the grain is flying, a warning may be given by a buzzer (not shown).

Although not shown in the drawings, the hulling unit 1 is provided with a supply amount sensor for detecting the amount of grain supplied to the hulling rolls 7, and the swing sorting unit 3 detects the swing rotation speed. A rotation speed sensor is provided, and a dust suction motor whose rotation speed can be adjusted by an inverter is provided in the dust box 31 of the brown rice mill 5 to rotate a dust fan and discharge dust from a dust tube. According to the magnitude of the amount of grain detected by the supply amount sensor, the inverter is controlled by a command from the control unit to adjust the number of revolutions of the dust suction fan to be large and small, and to appropriately control the number of revolutions of the dust suction fan. Is also good.

[Brief description of the drawings]

FIG. 1 is an overall cut side view of a hulling sorter.

FIG. 2 is a cutaway side view of a main part.

FIG. 3 is a cutaway side view of a main part.

FIG. 4 is a perspective view of a main part.

FIG. 5 is a side view of a main part.

FIG. 6 is a side view of a main part.

FIG. 7 is a perspective view of a main part.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 hulling unit 2 sliding rice wind selection unit 3 rocking sorting unit 4 mixed rice frying machine 5 brown rice frying machine (grain frying machine) 6 hulling hopper 7 hulling roll 8 hulling room 9 sliding rice style Selection box 10 Scratch rice-style path 11 Pity receiving trough 12 Sliding rice trough 13 Suction fan 14 Dust cylinder 15 Swing sorting plate 16 Distribution supply gutter 17 Distribution case 18 Brown rice partition plate 19 Rice partition plate 20 Brown rice extraction trough DESCRIPTION OF SYMBOLS 21 Brown rice flow path 22 Mixed rice discharge gutter 23 Mixed rice flow path 24 Mixed rice hopper 25 Paddy discharge gutter 26 Paddy flow path 27 Rice fryer 28 Graining blade 29 Graining room 30 Thrower cylinder 31 Dust absorption box 32 Grain extraction cylinder 33 Funnel part 34 Kernel downflow path 35 Air path after dust absorption 36 Guide air path before dust absorption 37 Dust lower air path 38 Dust cylinder 39 Dust absorption upper air path 40 Thrower joining plate 41 Dust cylinder joining port 42 Dust cylinder joining plate 43 Mounting body 44 Left / right mounting plate 45 Grain leveling 46 dust suction air adjustment plate 47 guiding air duct baffle 48 dust suction wind adjusting holes 49 wind regulating valve 50 grains reservoir 51 reserving the bottom plate 52 grains reservoir 53 dust suction air regulation window 54 inspection lid

Claims (2)

[Claims] 1. A thrower cylinder 30 in which grains at the upper end of a thrower-type grain fryer 5 are fried, a dust-absorbing box 31 into which the flour grains are fed from the thrower cylinder 30, and a dust-absorbing box. Dust cylinder 38 connected to 31 for discharging dust
A grain flow-down passage 34 through which the fried kernels are disposed in the dust-absorbing box 31;
And a circulating dust-absorbing air passage circulating around the outer periphery of the grain flowing-down passage 34.The wind flowing through the circulating dust-absorbing air passage flows across the grains flowing down from the grain flowing-down passage 34, A dust suction device for a grain-lifting machine, wherein the dust is discharged outside the machine via a dust tube 38. 2. A start end of a dust tube 38 is connected to a dust tube connecting port 41 opened in the dust joining plate 42, and the dust joining plate 42 is attached to the thrower tube 30;
The dust collecting plate 42 is detachably attached to the opening on the dust collecting side of the first dust collecting box 31, and the dust collecting box 31 is attached to the thrower cylinder 30.
The thrower cylinder 30 is detachably mounted.
When the dust suction box 31 is removed from the
The dust joining plate 42 and the dust cylinder 38 are connected to the dust box 30.
The dust suction device of a grain fryer according to claim 1, wherein the dust suction device is integrally separated from the dust collector.