JP3618293B2 - Rice milling machine - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a friction pressure type rice mill, and more particularly to a removal device for automatically discharging rice milling and rice bran remaining in a milling chamber before or after the start of the milling operation.
[0002]
[Prior art]
Friction pressure type small rice milling machines are generally equipped with a milling mechanism for milling brown rice in the milling chamber in the gap by rotating the milling roll inserted into a horizontal scouring net, and from the brown rice tank to the milling chamber. It has a shutter mechanism for opening and closing the drop mouth where brown rice should be dropped, and a milling degree adjustment mechanism equipped with a pressure plate that presses against the brown rice staying in the milling chamber in pressure contact with the milling exit end of the milling chamber ing. Brown rice that has fallen into the brown rice entrance space from the brown rice tank through the dropping port is rubbed by the stirring fin (or loose return screw) of the rotating whitening roll while being pressed by the compression plate. Is peeled off and whitened, and is discharged as milled rice from the milled rice outlet end to the outlet mill.
[0003]
[Problems to be solved by the invention]
However, the above-described small rice mill has the following problems. That is, all the amount of brown rice in the brown rice tank has fallen, and when the milling operation has been completed when the milled rice is no longer discharged from the end of the milled rice, a certain amount (about 1 go) of polished rice remains in the milling chamber. ing. Even if the milling roll is driven to rotate without supplying brown rice, the milling chamber equivalent part of the milling roll is a stirring fin or loose return screw that extends in the roll axis direction, so that the milling process does not work at all in this part. Because. As described above, if there is residual rice in the milling chamber, for example, when milling the milled rice instead of the milled rice, it is necessary to remove the remaining milled rice outside the milling chamber. It takes time and effort to remove the residual rice from the milling roll. Since the removal work of this assembly member is generally complicated, the user often neglects to clean up the remaining rice, and a part of the rice that has been whitened last time is mixed in the polished rice. In the case of a small amount of polished rice at home, the mixing ratio of the residual rice becomes high, which affects the taste.
[0004]
Therefore, in view of the above problems, an object of the present invention is to provide a rice mill capable of automatically discharging residual rice and rice bran in the milling chamber to the outside of the milling chamber before or after the start of the milling operation.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the means taken by the present invention is that a blast-type removing device for automatically discharging residual rice is provided.
[0006]
That is, the present invention provides a whitening mechanism for whitening brown rice in a whitening chamber as a gap by rotational driving of a whitening roll inserted into a horizontal screen, and dropping the brown rice from the brown rice storage tank into the whitening chamber. In a rice milling machine having an opening and closing mechanism for opening and closing the power drop opening and a milling degree adjusting mechanism having a pressing body that presses against the brown rice staying in the milling chamber in pressure contact with the milling exit end side of the milling chamber, It is characterized by comprising wind pressure application means for injecting a blast from the upstream side to the downstream side into the whitening chamber.
[0007]
After the rice milling is finished, the drop opening is closed by the opening and closing mechanism, the pressure body is separated from the rice mill outlet end, a gap is formed, and the milling roll is driven to rotate. Therefore, when the wind pressure application means is activated and the blast blows into the milling chamber, the folding wind flows down toward the milled rice exit end, so that the remaining rice that is rotating freely is postponed by buoyant transport by wind. Excluded outside through the gap at the end of the milled rice. For this reason, it is possible to automatically discharge the remaining rice without the need for labor, and it is also possible to clean the straw and dust in the milling chamber. Of course, it is also possible to perform an automatic removal process of residual rice before the start of the rice polishing. In particular, in the coin-insertion-type rice milling machine, it is possible to eliminate foreign matters in the milling chamber in advance before the start of the rice milling, thereby preventing foreign matters from being mixed.
[0008]
As the wind pressure applying means, it is possible to adopt a configuration having a wind-generating means for generating a folding screen and a folding screen introduction path for introducing the folding screen into the whitening chamber. If the wake-up means is a wake-up means that generates intermittent corrugated screens, the milled rice in the milling chamber may fit into the mesh of the scouring net, etc. Since it can be pulled apart by the pulse pressure of the corrugated folding screen, the sweeping action is improved over the uniform stream. It is desirable that the folding mouth of the folding screen introduction path is located at the position facing the brown rice entrance space defined between the whitening roll and the dropping mouth. It is difficult to form the phlegm itself at other parts, and because the peripheral surface of the whitening roll is too close, a recoil flow will occur and the screen will flow from the upstream side to the downstream side of the whitening chamber. This is because it becomes more difficult. Further, it is desirable that the direction of the fumarole is oblique to the milling roll in a state of facing the milled rice exit end. This is because not only the application of compressed air into the whitening chamber, but also the recoil flow can be reduced as much as possible to introduce a direct flow into the whitening chamber.
[0009]
In a rice mill comprising a suction fan that peels and removes the cocoons from the scouring net and pneumatically transports them to the cyclone for separating the cocoons, the suction fan is also used as a wind-up means, As the wind introduction path, it is possible to adopt a configuration in which a folding wind pipe branched from the air transport pipe of the suction fan is used. Since the folding screen generated from the suction fan is partially branched and sent to the folding screen, post-treatment of the residual rice as described above can be realized. In such a configuration, it is possible to realize compactness and cost reduction by reducing the number of parts. Of course, the screen that blows into the whitening chamber blows off the whitewash in the whitening chamber strongly, and the bag passes through the suction fan. A part of the rice cake can be collected with the cyclone, and the remaining rice cake circulates between the polishing chamber and the suction fan for a certain period of time. It is possible to reduce the mixing ratio of rice bran contained in the residual rice discharged from the milled rice end.
[0010]
Here, a case in which a wind direction switching mechanism for switching a wind direction between a first direction along the air transport pipe and a second direction leading to the wind pipe inside the branch of the air transport pipe and the folding wind pipe is provided. On the other hand, it is possible to select the alternate direction of the side stream by the wind direction switching mechanism inside the branch, and the wind pressure sent to the milling chamber can be increased, so that the operation of discharging the residual rice can be speeded up.
[0011]
Further, there is provided linking means for causing the wind direction switching mechanism to follow the opening / closing mechanism by relating the wind direction by the wind direction switching mechanism to the first direction and the second direction according to the opening and closing of the dropping port by the opening / closing mechanism. In the case of the remaining rice, in the post-treatment of the residual rice, the wind direction can be switched to the second direction only by operating the opening / closing mechanism and closing the dropping port, and the wind direction switching mechanism is individually operated. This saves time and helps improve usability.
[0012]
In addition, as this connection means, it can be set as the filament material with a flexible guide tube which fixes one end to the push-pull rod of an opening-and-closing mechanism, and fixes the other end to the flap of a wind direction switching mechanism. By using a wire rod with a flexible guide tube, even if there are various obstacles between the push-pull rod of the opening and closing mechanism and the flap of the wind direction switching mechanism, it can be drawn and connected, There is no need to change the design of the mechanism layout and the cost can be reduced.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a longitudinal side view showing a small rice mill according to an embodiment of the present invention, and FIG. 2 is a partially cutaway front view thereof.
[0014]
The small rice mill of this example opens and closes a hopper-shaped brown rice storage tank 2, a whitening mechanism for whitening brown rice in the whitening chamber 3, and a drop opening 2 a of the brown rice storage tank 2 in a vertically long casing 1. And a whitening degree adjusting mechanism for adjusting the whiteness of the brown rice by the compression plate 4, and a rice cake which sucks the rice cake from the whitening chamber 3 and discharges it to the external cyclone 5 to separate the rice cake. It has a wind selection mechanism and a folding screen type removing device for removing residual rice in the milling chamber 4.
[0015]
A shutter plate 6 is slidably provided at the outlet 2 a of the brown rice storage tank 2. The shutter plate 6 can be opened and closed by gripping and pulling the knob 7a of the push-pull rod 7. This drop opening 2 a communicates with the brown rice entrance space 8 a of the milling block 8.
[0016]
The whitening block 8 is made of a casting, and has a hexagonal cross section of a cylindrical removal mesh 9 and a whitening roll 10 that is cantilevered and inserted into the removal mesh 9. . This whitening roll 10 has an outer cylinder 12 fitted to an inner cylinder 11, and has a suction port 11a on the proximal end side of the inner cylinder 11, and a plurality of through holes 11b are formed on the distal end side thereof. . A feed screw 12 a is formed in a portion corresponding to the brown rice entrance space 8 a in the outer cylinder 12, and the brown rice is guided to the milling chamber 3 in the dehulling net 9 by the feed screw 12 a. A portion substantially corresponding to the inside of the debris net 9 of the outer cylinder 12 is a stirring fin or a loose return screw 12b, and the brown rice stays and is whitened by friction pressure. A ventilation slit 12c is formed at the base portion on the rear side in the rotational direction of the stirring fin or the loose return screw 12b. A main pulley 13 is fixed to the shaft portion 10a of the whitening roll 10 that protrudes laterally from the housing 1, and a double V belt (not shown) is provided between the main pulley 13 and an electric motor (not shown). ) Is wrapped around.
[0017]
The pressure plate 4 that presses against the brown rice staying in the milling chamber 3 while being pressed against the outlet receiver 16 on the side of the milling exit of the milling chamber 3 is attached to the pressure adjusting pin 14 by the biasing force of the spring 14a. It has been. The pressure adjusting pin 14 is a cam follower that thrusts against the cam surface of the whiteness dial 15. In addition, 16a is an exit trough for receiving the polished rice discharged | emitted from the clearance gap between the exit receptacle 16 and the compression board 14. FIG.
[0018]
A suction chamber 17 for receiving soot is provided directly under the demolition net 9, and this suction chamber 17 is connected to a suction fan 19 of an axial flow suction centrifugal discharge type via a suction tube 18, and the soot discharge guide tube. 20 is connected to the cyclone 5. The suction fan 19 is driven to rotate by a V belt 22c wound around a driving pulley 22a fixed to the shaft portion 10a of the whitening roll 10 and a driven pulley 22b fixed to the fan shaft 19b.
[0019]
A folding wind pipe 21 is branched from an exhaust pipe 19a through which the centrifugal discharge flow of the suction fan 19 is passed, and an air inlet 21a of the soot discharge guide pipe 20 is connected to a position facing the brown rice inlet space 8a. The direction of the fumarole 21a is oblique to the milling roll 10 in a state in which it is directed to the milled rice exit end. A swingable flap 25 is built in a branch portion between the soot discharge guide pipe 20 directly connected to the exhaust pipe 19a and the soot wind pipe 21 connected to the pipe wall of the exhaust pipe 19a. When the flap 25 abuts against the tube wall of the exhaust pipe 19a, the mouth of the folding screen 21 is thereby closed. The flap 25 is interlocked with the push / pull operation of the push / pull rod 7. That is, one end of the core wire 26 a is fixed to the push-pull rod 7 and the other end of the core wire 26 a is provided with the flexible guide tube-equipped wire 26 fixed to the action piece 25 a of the turning center S of the flap 25.
[0020]
When the push-pull rod 7 is operated to open the dropping port 2a, it falls from the brown rice storage tank 2 to the brown rice inlet space 8a through the dropping port 2a, and the mouth of the folding screen 21 is closed with a flap 25. The brown rice that has fallen into the brown rice entrance space 8a is advanced to the whitening chamber 3 by the feed screw 12a and is pressed by the compression plate 4 while being stirred by the stirring fin (or loose return screw) 12b of the rotating whitening roll 10 and the debris net 9. Because of the frictional resistance, the koji is peeled off and whitened, and is discharged from the milled rice outlet end to the outlet koji 17 as polished rice. The soot separated in the whitening chamber 3 is discharged from the suction chamber 17 to the cyclone 5 through the suction fan 19 and the soot discharge guide tube 20, and the soot falls freely below the cone 5a and is collected. During the whitening operation, the outside air sucked from the suction port 11a passes through the hollow of the inner cylinder 11 and passes through the through hole 1b corresponding to the whitening chamber 3, the ventilation slit 12c, and the mesh of the debris net 9 and the suction chamber. It flows into 17.
[0021]
After the milling, the push-pull rod 7 is operated to close the dropping port 2a, the inlet of the folding pipe 21 is opened, the inlet of the burning discharge guide pipe 20 is closed with a flap 25, and the compression plate 4 is connected to the end of the milling rice. and is separated to form a gap and are driven rotating the milling roll 10, the residual rice are floating rotating at grain cleaning chamber, write air jet through Funkazekan 21 jetted into the grain cleaning chamber 3 or When this occurs, the folding wind flows down toward the milled rice exit end, so that the remnant rice that is rotating freely is pushed forward by buoyant transport by the wind motion and removed to the outside through the gap at the milled rice exit end. For this reason, it is possible to automatically discharge the remaining rice without the need for labor, and it is also possible to clean the straw and dust in the milling chamber. Of course, it is also possible to perform an automatic removal process of residual rice before the start of the rice polishing.
[0022]
The suction fan 19 of this example is an axial flow suction centrifugal discharge type, and the exhaust pipe 19a has a radial arrangement on the blade rotation plane. Thus, each passage of one single vane, is intermittent stages wave mound wind is generated in the exhaust pipe 19a. The milled rice in the milling chamber 3 may be small rice that has lost its mobility because it fits into the mesh of the dehulling net 9, but can be pulled apart by shaking with the pulse pressure of the intermittent corrugated screen, The sweeping action is improved compared to the uniform torrent.
[0023]
In this example, since the suction fan 19 that sucks the soot is used as a wind-up means for generating the soot that is sent into the whitening chamber 3, a reduction in the number of parts can achieve a reduction in size and cost. . Moreover, the screen that blows into the whitening chamber 3 blows off the whitewater in the whitening chamber 3 strongly, and the whitewater can be partially recovered by the cyclone via the suction fan 19, and the remaining screen is the whitening chamber 3 and the suction fan 19. Circulates for a certain period of time, so that the rice bran in the milling chamber 3 is not easily released to the outside through the gap at the rice mill outlet end, and the mixing ratio of rice bran contained in the residual rice discharged from the rice mill outlet end Can be reduced.
[0024]
Further, since the flexible guide tube-equipped wire 26 is provided in order to link the wind direction switching mechanism of the flap 25 with the shutter mechanism, it is possible to eliminate the trouble of individually operating the wind direction switching mechanism, which contributes to improved usability. . Even if there are various obstacles between the push-pull rod 7 and the flap 25, it is possible to connect them by drawing them around, so that it is possible to avoid a significant design change in the mechanism layout and reduce the cost. realizable.
[0025]
【The invention's effect】
As described above, the present invention includes a blast-type removing device for automatically discharging rice milling and rice bran remaining in the milling chamber before or after the milling operation is started. Has an effect.
[0028]
That is, in a rice mill comprising a suction fan that peels and removes the cocoon from the scouring net and pneumatically transports it to the cyclone for separating the cocoon, the suction fan is also used as a wind-up means, the air introduction passage is configured to branch the mound air tube from the air transport pipe of the suction fan. Since the folding screen generated from the suction fan is partially branched and sent to the folding screen, post-treatment of residual rice can be realized. In such a configuration, it is possible to realize compactness and cost reduction by reducing the number of parts. Of course, the screen that blows into the whitening chamber blows off the whitewash in the whitening chamber strongly, and the bag passes through the suction fan. A part of the rice cake can be collected by the cyclone and the remaining rice cake is circulated between the polishing chamber and the suction fan for a certain period of time. The mixing ratio of rice bran contained in the residual rice discharged from the end can be reduced.
[0029]
Further, a wind direction switching mechanism for switching the wind direction between the first direction along the air transport pipe and the second direction leading to the suction fan to the wind fan pipe is provided inside the branch of the air transport pipe and the folding wind pipe. In this case, since the alternative direction can be selected by the wind direction switching mechanism inside the branch, the wind pressure sent to the whitening chamber can be increased, and the operation of discharging the remaining rice can be speeded up.
[0030]
Furthermore, it has linkage means for associating the wind direction by the wind direction switching mechanism with the first direction and the second direction in accordance with the opening and closing of the drop port by the opening and closing mechanism, and causing the wind direction switching mechanism to follow the opening and closing mechanism. In this case, in the post-treatment of the remaining rice, the wind direction can be interlocked and switched to the second direction only by operating the opening / closing mechanism and closing the dropping port, and the trouble of individually operating the wind direction switching mechanism Can contribute to improved usability.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing a small rice mill according to an embodiment of the present invention.
FIG. 2 is a partially cutaway front view showing a small rice mill according to the same embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Vertical housing | casing 2 ... Hopper-shaped brown rice storage tank 2a ... Drop opening 3 ... Whitening chamber 4 ... Pressure plate 5 ... Cyclone 5a ... Cone 6 ... Shutter plate 7 ... Push-pull rod 7a ... Knob 8 ... Whitening block 8a ... Brown rice Inlet space 9 ... Soil removal net 10 ... White roll 10a ... Shaft 11 ... Inner cylinder 11a ... Intake port 11b ... Through hole 12 ... Outer cylinder 12a ... Feed screw 12b ... Agitating fin or loose return screw 12c ... Ventilation slit 13 ... Main Pulley 14 ... Pressure adjusting pin 14a ... Spring 15 ... Whiteness dial 16 ... Outlet receiver 16a ... Outlet rod 18 ... Suction pipe 19 ... Suction fan 19a ... Exhaust pipe 19b ... Fan shaft 20 ... Soot discharge guide pipe 21 ... Soot pipe 21a ... Aeration port 22a ... Driving pulley 22b ... Driving pulley 22c ... V belt 25 ... Flap 25a ... Work piece S ... Swivel center 26 ... Wire 26a with flexible guide tube ... Core

Claims (4)

A whitening mechanism for whitening the brown rice in the whitening chamber as a gap by rotating the whitening roll that is inserted into a horizontal wiping net, and the opening for opening the brown rice from the brown rice storage tank into the whitening chamber. an opening and closing mechanism for a milling degree adjusting mechanism having a pressing member pressed indicia to brown rice to stay pressed to the polished room rice outlet end side of the milling chamber, to shed the bran from the bran removing network In a rice mill having a suction fan that sucks and sucks air into a cyclone for separating the straw ,
Wind pressure applying means for injecting a blast from the upstream side to the downstream side of the whitening chamber is provided , and the wind pressure applying means introduces wind generating means for generating a folding screen and the folding wind into the polishing chamber. And the wind-up means is the suction fan, and the screen-wind introduction path is a screen pipe branched from the air transport pipe of the suction fan. . According to claim 1, wind direction for switching to a second orientation wherein the interior branching the air transport tube to the mound ventilation tube to derive the first orientation and the tombs wind tube along the wind direction to the air transport pipe A rice mill characterized by comprising a switching mechanism. 3. The opening / closing mechanism according to claim 2 , wherein the opening / closing mechanism associates the wind direction by the wind direction switching mechanism with a first direction and a second direction according to opening and closing of the drop port by the opening / closing mechanism. A rice mill having linkage means for being driven. 4. The link means according to claim 3 , wherein the linkage means is a linear member with a flexible guide tube having one end fixed to the push / pull rod of the opening / closing mechanism and the other end fixed to the flap of the wind direction switching mechanism. Rice milling machine.

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