JP2006150287A - Rice pearling mill - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice pearling mill capable of discharging the left rices from a milling/pearling chamber in a short time without leaving them and troubling assistance at completion of milling/pearling. <P>SOLUTION: The rice pearling mill is provided with a first air-jetting means 14 controlled so as to jet compression air from a rear side of the left rices in a milling/pearling chamber 13 formed by a milling/pearling roll 15 and a milling/pearling net 36 toward a front side positioned with a discharge port; and a second air-jetting means 16 controlled so as to continuously jet compression air from the milling/pearling roll into the milling/pearling chamber in the state that a milling/pearling roll shaft is continuously rotated by inertia even if feeding of a driving power source for driving the milling/pearling roll shaft continuously provided with the milling/pearling rolls is stopped. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rice mill, and more particularly, to a rice mill provided with a blowing device that discharges the remaining rice in a milling chamber by blowing compressed air or the like.

In general, a rice milling machine grinds the rice bran layer on the surface of brown rice while feeding brown rice between the milling roll rotating at the center of the milling mill and the surrounding milling net, and scraping it by friction, thereby removing the brown rice into white rice and divided rice. It is something that will be elaborate.
Among such rice mills, there is a type in which brown rice is fed into the milling chamber, for example, residual rice is generated in the milling chamber at the end of milling due to, for example, from below to above or from the side. For this reason, conventionally, a rice mill equipped with a blowing device for blowing compressed air from the rear of the milling chamber to the front of the discharge port in order to discharge the remaining rice in the milling chamber at the end of milling has been proposed (for example, , See Patent Document 1).

However, in the above-described conventional rice milling machine, if the jet nozzle of the spraying device is provided so that the compressed air can be delivered farther along the inner peripheral surface of the milling cylinder, residual rice is formed. There was a problem that a large amount of blast was needed to blow off the remaining rice because the flow velocity of the wind slowed down on the inner peripheral surface of the remaining milling cylinder, that is, near the milling net. On the other hand, if the amount of air blown from the blast opening is reduced, the blast must be continued for a long time until the residual rice becomes zero, and therefore, there is a problem that it takes time from the start to the end of the milling.
In addition, some conventional rice mills are configured to blow compressed air from the rotating milling roll toward the milling room. Normally, the compressed air blown from the milling roll is There is also a problem that the remaining rice cannot be discharged because the supply is stopped when the drive power to the milling roll shaft in which the milling rolls are connected is turned off.
And if there is residual rice in the machine, it will mix with the next lot of brown rice and cause contamination problems, so it was necessary to drain the residual rice manually (cleaning, in some cases disassembly and cleaning).

JP-A 63-185461

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and at the end of the semen, it is possible to discharge all the remaining rice from the sericulture room in a short time without bothering human hands. The purpose is to provide a rice milling machine that can be used.

In order to achieve the above object, the invention according to claim 1 is characterized in that a milling roll that cuts the milled layer on the surface of brown rice is connected, and a horizontal milling roll shaft in which the outer peripheral surface of the milling roll communicates with the inside of the shaft, and the milling An electric drive source for rotating the roll shaft, a first blowing means for blowing compressed gas from behind the residual rice in the milling chamber formed by the milling roll and the milling net when the milling is completed, In a rice mill comprising a second blowing means for blowing compressed gas from the milling roll into the milling chamber via the milling roll shaft,
In the state where the supply of driving power for rotating the semen roll shaft connected with the semen roll is stopped and the semen roll shaft continues to rotate by inertia, the second blast air means Control means for controlling the compressed gas to continue to be blown from the roll toward the sperm chamber is provided.

  In order to achieve the above object, in the invention described in claim 2, in addition to the configuration of the invention described in claim 1, the control means performs a preset number of rotations and stops of the wiping roll shaft at the end of wiping. The drive power supply is controlled to be connected and disconnected so as to repeat only.

  According to the first aspect of the present invention, the second blowing means is in a state in which the polishing roll shaft continues to rotate by inertia even when the supply of drive power for driving the polishing roll shaft is stopped at the end of the polishing. In other words, in a state different from the complete stop state, the control means controls so as to continue to blow the compressed air from the sperm roll into the sperm chamber. As a result, the blast from the sperm roll, which has lost its direction due to the rotation of the sperm roll shaft, blows off the inner peripheral surface of the sperm cylinder just like a spear just before stopping the sperm roll shaft. Residual rice sticking to the surface will come up. Therefore, even if there is not a large amount of compressed air blown from the rear of the semen chamber toward the front of the discharge port, the remaining rice can be efficiently blown away, and without any trouble at the end of the semen, it can be done in a short time. It is possible to provide a rice milling machine that can discharge all the remaining rice from the milling room.

  According to the second aspect of the present invention, the driving power source is controlled to be connected / disconnected by the control means so that the squeezing roll shaft repeats rotation and stop for a preset number of times at the end of scouring. Thereby, in addition to the operation and effect of the invention according to claim 1, the blast from the milling roll blows off the inner circumferential surface of the milling cylinder many times immediately before stopping the milling roll shaft. Residual rice that has been firmly attached to the surface will float up. As a result, it is possible to discharge all the remaining rice from the milling room in a shorter time.

  Even if the supply of drive power to drive the semen roll shaft is stopped at the end of semen, while the semen roll shaft continues to rotate, the blast from the semen roll toward the semen chamber continues. A rice milling machine that can discharge all the remaining rice from the milling mill within a short time without bothering has been realized.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a rice milling machine to which the present invention is applied, FIG. 2 is a schematic diagram of a rice milling machine in the same example, FIG. 3 is a side view showing a friction-type rice milling machine in the same example, FIG. FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4, FIG. 6 is a front view of a friction-type rice milling machine in the same example, and FIG. 7 is an exploded view showing a shut-off device. FIG. 8 is a side view showing the sperm compartment cover, FIG. 9 is a plan view showing the sperm compartment cover, and FIG. 10 is a plan view of the sperm compartment cover with the intake port blocked.

  The present invention provides a first blasting means for blasting compressed gas from the rear of the semen chamber toward the front of the outlet in order to discharge the residual rice in the semen chamber at the end of the semen, and the semen from the rotating semen roll. The rice milling machine 10 is applied to a rice mill equipped with a second blowing means for blowing compressed gas toward the room. As shown in FIGS. A grinding-type rice milling machine part 11 and a friction-type rice milling machine part 12 for grinding upper and lower stages of the surface, and a rear part of the friction-type rice milling chamber 13 for discharging the remaining rice in the friction-type rice milling machine part 12 A first blowing device 14 (for example, a compressor) as a first blowing means for blowing compressed air as compressed gas from the front to the front, and a position in the friction-type squeezing chamber 13 at the time of semen The squeezing roll (hereinafter referred to as a friction roll) 15 is in the frictional scouring chamber 13 Only in a second air jet device 16 as a second air jet means for air jet compressed air as compressed gas (e.g., blower) is constituted by a.

  On the upper surface of the casing of the rice mill 10 is provided with a funnel-shaped inlet 18 for guiding brown rice discharged downward from the circulating rice milling tank 17 (shown in FIG. 1) into the casing. A rice sensor 19 as a rice detection means for detecting the presence or absence of brown rice passing through the inside of the insertion port 18 is provided. As shown in FIG. 2, the detected value detected by the rice sensor 19 is input to a control unit 20 as control means for controlling the start and end of the milling by the rice mill 10. Then, the control unit 20 automatically starts squeezing when an output signal from an operation unit (not shown) provided on the front surface of the housing is input and a detection signal of presence of rice is input from the sensor 19 of rice. And the first and second blowing devices 14 and 16 are set in advance so as to appropriately control the operation.

  As shown in FIG. 2, the grinding-type rice milling machine unit 11 is disposed horizontally on the lower side of the inlet 18 so as to extend in the longitudinal direction of the machine body, and the brown rice introduced into the inlet 18 is on the lower side. It is guided into the grinding-type rice milling machine part 11 through the extending bowl-shaped member 21. The grinding-type rice milling machine 11 has a horizontal single-shaft / one-grinding grinding mill 22 for horizontally transporting brown rice flowing down from the inlet 18 to the grinding milling chamber 22 on the front side of the machine body. A grinding roll shaft in which a screw conveyor unit 23 and a grinding roll 25 for shaving a hard surface of brown rice in a grinding type milling chamber 22 together with a cylindrical milling net 24 with a brown rice weight ratio of about 1% are connected to one axis. 26 is rotatably arranged.

  A front side of the grinding roll shaft 26 is provided with a discharge port (not shown) for discharging the milled rice from the grinding-type milling chamber 22, and a horizontal umbrella-shaped movable body capable of opening and closing the discharge port. A pressure adjustment unit 27 is provided for adjusting the scissors accuracy by urging (not shown) in the axial direction. A belt 29 for transmitting the rotational driving force of an electric sub motor 28 as a drive source arranged in parallel below the grinding roll shaft 26 to the grinding roll shaft 26 is provided at the rear of the grinding roll shaft 26. It is wound.

  Then, when the rotational driving force of the auxiliary motor 28 is transmitted to the grinding roll shaft 26 via the belt 29, the grinding roll shaft 26 rotates at a constant speed at the center of the grinding mold polishing chamber 22 and thereby from the surface of the brown rice. As shown in FIG. 1, the dust such as the shavings that have been shaved off is sucked into a dust collector 31 as a dust collecting means disposed outside the machine body through a duct 30 connected to the grinding type rice milling machine section 11. The The dust collector 31 is set to operate by a control means different from the control unit 20 of the rice milling machine 10.

  After the grinding by the grinding-type rice milling unit 11 is finished, the ground rice is discharged from the discharge port, and then guided to the friction-type rice milling unit 12 via the bowl-shaped member 32 extending downward. . By the way, a branching portion 34 is provided at the intermediate portion of the bowl-shaped member 32 so that the ground milled rice discharged from the grinding-type rice milling unit 11 can be discharged out of the machine through the grinding rice milling outlet 33. 34, it is possible to obtain germinated rice (which leaves the germ part of rice), or to discharge the hard rice grains with a hard layer like old rice and recirculate them to the grinding-type rice milling unit 11 again. ing.

  As shown in FIGS. 2 and 3, the friction-type rice milling unit 12 includes a horizontal type single-shaft / one-chamber friction-type milling chamber 13, and grinding that has been discharged from the grinding-type milling chamber 22. A screw conveyor 35 for laterally transporting the polished rice to the friction type milling chamber 13 on the front side of the machine body, and a rice bran layer on the surface of the ground milled rice in the friction type milling chamber 13 together with the cylindrical milling net 36 and about the weight ratio of brown rice A friction roll shaft 37 that is connected to a cylindrical friction roll 15 that cuts about 9% in one axis is rotatably arranged in a state of being housed in a box-shaped semen chamber cover 38.

  At the front of the frictional type semen chamber 13, there is provided a discharge port 39 (shown in FIG. 2) for discharging the white rice after the frictional scouring in the friction type semen chamber 13, and this discharge port 39 can be opened and closed. A pressure adjustment unit 40 (shown in FIG. 1) is provided that adjusts the scissors accuracy by urging a horizontal umbrella-shaped movable body (not shown) in the axial direction. Further, as shown in FIG. 3, an air valve 41 that blows compressed air from the first blowing device 14 toward the front where the discharge port 39 is located at the rear of the frictional type semen chamber 13 as shown in FIG. 3. A plurality are provided. The outlets of these air valves 41 are provided so as to blow in parallel along the inner peripheral surface of the fine mesh 36 in order to allow the compressed air to be blown to reach farther.

  As shown in FIGS. 2 and 3, the friction roll shaft 37 uses a hollow shaft and is connected to the second blowing device 16 at the rear end of the shaft. The compressed air can be introduced into the shaft. Further, the front end portion of the friction roll shaft 37 has a vent hole 37a (shown in FIG. 3) that allows compressed air introduced into the shaft to be discharged into the friction roll 15 connected to the front end portion of the friction roll shaft 37. ) Are provided in a row at intervals of about 90 degrees on the circumference.

  As shown in FIGS. 4 and 5, the friction roll 15 is formed in a hollow shape so that the friction roll shaft 37 can be fitted therein. Two convex portions 15a extending in a non-linear manner along the longitudinal direction of 15 are integrally formed at positions different from each other by about 180 degrees. Furthermore, a slit 15b that communicates the inside and outside of the friction roll 15 is provided discontinuously along the convex portion 15a at a position adjacent to the base portion of the convex portion 15a. Compressed air can be exhausted uniformly and vigorously from the outside, that is, toward the frictional type semen chamber 13.

  As shown in FIG. 2, a rotational driving force of an electric main motor 42 as a drive source arranged in parallel below the friction roll shaft 37 is transmitted to the rear portion of the friction roll shaft 37 to the friction roll shaft 37. A belt 43 is wound around. The main motor 42 rotates the friction roll shaft 37 at a constant speed during fine adjustment.

  The load current value for controlling the output of the main motor 42 is used by the control unit 20 for various controls at the end of the fining. Then, when the rotational driving force of the main motor 42 is transmitted to the friction roll shaft 37 via the belt 43, the friction roll shaft 37 rotates at a constant speed at the center of the friction type milling chamber 13, whereby the surface of the ground milled rice is obtained. In addition to scraping off the soot, dust such as shavings is sucked into the dust collector 31 through a duct 44 (shown in FIG. 1) connected to one side surface of the semen chamber cover 38.

  Then, the control unit 20 determines whether or not the finishing of the punishment is completed based on the detection value from the rice sensor 19 and the load current value of the main motor 42 that drives and controls the friction roll shaft 37 after the punishment starts. To do. Then, the control unit 20 ends the milling when the rice sensor 19 detects the absence of brown rice and the load current value is equal to or less than a preset value, for example, 18 A or less in the case of a 20-horsepower rice mill. Judge that there is. Then, when it is determined that the finishing is finished, it is set in advance so as to shift to the finishing mode, stop the supply of the driving power to the main motor 42 and automatically finish the finishing.

Further, the control unit 20 that has shifted to the end mode is in a state different from the state in which the friction roll shaft 37 continues to rotate due to inertia after the supply of drive power to the main motor 42 is stopped, that is, the complete stop state. Then, the second blowing means 16 is set so that the compressed air from the second blowing apparatus 16 continues to blow into the friction type semen chamber 13 from the slit 15b of the rotating friction roll 15. Control the operation.
More specifically, the control unit 20 recognizes, by time management, the state in which the friction roll shaft 37 continues to rotate due to inertia after the supply of drive power to the main motor 42 is stopped. Time information for controlling the operation of the blast device 16 for a preset time is stored and stored. This time information is obtained in advance by experiments, calculations, and the like. For example, in the case of a 20 horsepower rice mill, the time information is about 15 seconds. And the control part 20 carries out time management of the blast time of the 2nd blast apparatus 16 based on this time information (setting time). In other words, the control unit 20 is set in advance so as to stop the blast from the second blast device 16 when the friction roll shaft 37 is completely stopped. The start of the blast from the slit 15b of the friction roll 15 into the friction-type squeezing chamber 13 is not limited to the configuration in which the squirt is started together with the start of the semen. For example, a driving power source for the main motor 42 is used. It is also possible to configure so as to start when the supply is stopped.

  Further, the control unit 20 is set so that the first blowing device 14 is continuously operated during the end mode, and the compressed air is continuously blown toward the discharge port 39 from the rear side of the friction type semen chamber 13. ing. Furthermore, the control unit 20 is set so as to control connection / disconnection of the drive power of the main motor 42 so as to repeat rotation and stop of the milling roll shaft 37 a predetermined number of times when the milling is finished.

  As a result, the blast from the friction roll 15, which has lost its direction due to the rotation of the fine roll shaft 37, blows off the inner peripheral surface of the fine net 36 just like a spear just before the fine roll shaft 37 stops. Then, the residual rice sticking to the millet net 36 is lifted. The residual rice that has floated up is sent to the discharge port 39 without being left behind by the blast from the air valve 41. As a result, the remaining rice can be efficiently blown away even if the amount of compressed air blown from the rear side of the frictional type semen chamber 13 toward the front where the discharge port 39 is located is reduced. It is possible to discharge all the remaining rice from the frictional milling chamber 13 in a short time without bothering.

  Further, the milling machine 10 includes a shut-off device 46 serving as a shut-off means for shutting off the duct 44 connecting the friction-type milling chamber 13 (the milling chamber cover 38) and the dust collector 31 at the end of milling, and the intake of the milling chamber cover 38. A closing device 47 as a closing means for closing the mouth 38a is provided.

  Specifically, as shown in FIGS. 1 and 6, the duct 44 is provided with a shut-off device 46 that shuts off the dust collector 31 side and the semen chamber cover 38 side. As shown in FIG. 7, the blocking device 46 has a flat opening / closing shutter in which an opening 48a having a diameter substantially the same as the duct diameter is formed on the lower side and a convex flange portion 48b is integrally formed. 48, an air actuator 49 that moves up and down in the vertical direction of the machine body in a state where the flange portion 48b of the opening / closing shutter 48 is cantilevered, and supports both surfaces of the opening / closing shutter 48 so as to be slidable and coupled to the duct 44. In order to slidably support the outer peripheral portion of the pair of flat plate-like supports 50, 51 and the opening / closing shutter 48 provided in the central portion, the connecting portions 50a, 51a are configured as a pair of discontinuous frames. Support frames 52a and 52b, and an attachment frame 53 that is bent in an L shape to attach the shut-off device 46 to the airframe are configured. The air actuator 49 is driven and controlled by the control unit 20, and smoothly slides along a slide shaft 49 b in which a slide portion 49 a that engages with the flange portion 48 b of the opening / closing shutter 48 is erected in the vertical direction of the machine body. It is configured to slide.

  The control unit 20 controls the air actuator 49 so that the opening / closing shutter 48 is fixed at the raised position when the rice milling machine 10 is in operation, that is, in a state different from the end of milling. 44 is set in such a manner that the inside of the semen chamber cover 38 is made negative pressure by the suction force of the dust collector 31 to suck out the air inside. Further, the control unit 20 is set to block the suction force of the dust collector 31 by blocking the duct 44 by drivingly controlling the air actuator 49 so that the opening / closing shutter 48 is lowered at the end of precision.

  In addition, as shown in FIGS. 8 to 10, the upper surface of the semen chamber cover 38 is configured to allow air to be taken into the semen chamber cover 38, which has a negative pressure when the dust collector 31 is in operation. The intake ports 38a are provided in a row, and a closing device 47 that can open and close these intake ports 38a is provided. In the closing device 47, openings 54a having the same diameter as the suction port 38a are formed in a row that is substantially the same as that of the semen chamber cover 38. A flat slide shutter 54 that closes the intake port 38a by shifting the opening 38a and the opening 54a, and a solenoid 55 that moves the slide shutter 54 forward and backward in the longitudinal direction of the machine body are provided. The solenoid 55 is driven and controlled by the control unit 20, and the rod portion 55a extending in a state of being connected to the rear portion of the slide shutter 54 moves forward and backward in the longitudinal direction of the machine body, thereby moving the slide shutter 54 forward and backward. It is designed to move.

  Then, when the rice milling machine 10 is in operation, the control unit 20 drives the solenoid 55 so that the slide shutter 54 is fixed at the retracted position, thereby opening the intake port 38a fully. It is set so that air is sucked into the semen chamber cover 38 by the suction force of the dust collector 31. Further, when the control unit 20 determines that it is at the end of the fine adjustment, the control unit 20 drives and controls the solenoid 55 so that the slide shutter 54 slides toward the front of the machine body, thereby shifting the opening 54a from the intake port 38a. The intake port 38a is set to be fully closed.

  That is, at the end of the semen, as shown in FIG. 10, the air inlet 38a of the semen chamber cover 38 is blocked by the slide shutter 54, and the dust collector 31 and the semen chamber cover 38 are communicated by the open / close shutter 48. The duct 44 is blocked. As a result, the suction force of the dust collector 31 is cut off, so that there is no sticking of the residual rice to the scouring net 36 of the frictional scouring chamber 13, and the residual rice can be easily moved. The compressed air from the second blower devices 14 and 16 is prevented from being discharged from the intake port 38a of the semen chamber cover 38 or sucked into the dust collector 31, so that the residual rice is removed from the white rice discharge port 56 (FIG. It is possible to blow away all the way toward the discharge port 39 that is connected to the first and second discharge ports 39. As a result, it is possible to reliably discharge all residual rice in a shorter time without stopping the operation of the dust collector 31.

  As described above, according to the present invention, the second blower device 16 continues to rotate the sperm roll shaft 38 due to inertia even when the supply of the drive power for driving the sperm roll shaft 38 is stopped at the end of the semen. In a state different from the complete stop state, that is, a state different from the complete stop state, the control unit 20 causes the compressed air to continue to be blown from the friction roll 15 into the friction type squeezing chamber 13 through the friction roll shaft 37. Operation controlled. As a result, the blast from the slit 15b of the friction roll 15 that has lost its direction due to the rotation of the friction roll shaft 37 blows off the inner peripheral surface of the fine mesh 36 just like a spear just before the friction roll shaft 37 stops. As a result, the residual rice sticking to the pearl net 36 comes to float. Therefore, even if a large amount of compressed air is blown from the rear of the frictional type semen chamber 13 toward the front where the discharge port 39 is located, the remaining rice can be efficiently blown away, and the labor is not troubled at the end of the semen. It is possible to provide the rice mill 10 capable of discharging all the remaining rice from the friction-type milling chamber 13 within a short time.

  Further, according to the present invention, the control unit 20 controls connection / disconnection of the drive power source of the main motor 42 so that the rotation and stop of the friction roll shaft 37 are repeated a preset number of times when the fine finishing is finished. Thereby, the blast from the slit 15b of the friction roll 15 was firmly attached to the fine mesh 36 by blowing off the inner peripheral surface of the fine mesh 36 many times just before the friction roll shaft 37 stopped. There will be no residual rice left. As a result, it is possible to discharge all the remaining rice from the frictional milling chamber 13 in a shorter time.

  In addition, this invention is not applied only to the rice milling machine provided with the horizontal type | mold 2 axis | shafts milling room, It is applied also to the bowl type rice milling machine which passes brown rice to a milling room toward the upper direction from the downward direction. be able to.

1 is a front view of a rice mill to which the present invention is applied. It is a schematic diagram of the rice mill in the same example. It is the side view which showed the friction type | formula semen chamber in the example. It is the side view which showed the milling roll. It is AA arrow sectional drawing in FIG. It is a front view of the friction type rice milling machine part in the example. It is the disassembled perspective view which showed the interruption | blocking apparatus. It is the side view which showed the semen chamber cover. It is the top view which showed the semen chamber cover. It is a top view of a sperm chamber cover with which the inlet was blocked

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Rice mill 11 Grinding-type rice milling part 12 Friction-type rice milling part 13 Friction-type rice milling room 14 1st blowing apparatus (1st blowing means)
15 Friction roll (spinning roll)
15b Slit 16 Second blowing device (second blowing device)
20 Control unit (control means)
36 Grain net 37 Friction roll shaft 38 Grain chamber cover 39 Discharge port 41 Air valve 42 Main motor (drive source)

Claims (2)

A horizontal milling roll shaft in which a milling roll that cuts the milled layer on the surface of the brown rice is connected and the outer surface of the milling roll communicates with the inside of the shaft, an electric drive source that rotates the milling roll shaft, and at the end of milling A first blowing means for blowing a compressed gas from behind the residual rice in the milling chamber formed by the milling roll and the milling net, and the milling roll from the milling roll via the milling roll shaft during milling. In a rice mill provided with second blowing means for blowing compressed gas toward the room,
In the state where the supply of driving power for rotating the semen roll shaft connected with the semen roll is stopped and the semen roll shaft continues to rotate by inertia, the second blast air means A rice mill comprising control means for controlling so as to continue to blow compressed gas from a roll into the milling chamber.   The said control means controls the connection / disconnection of the said drive power supply so that rotation and a stop of the said milling roll axis | shaft may be repeated predetermined times at the time of completion | finish of milling.

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