JP2006175343A - Rice polishing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice-polishing device having the function of polishing polished rice to remove oxides from the surface of polished rice and the function of pounding unpolished rice partly and the function of polishing rice and allowing fine setting of the polishing pressure to enable polishing of partly pounded to polished rice. <P>SOLUTION: The flowing unpolished rice within a polishing chamber 28 is limited with a resistance lid 37 arranged on the rice-discharging side of the polishing chamber 28 in a freely pressure-contacting way, and the polishing pressure in the polishing chamber 28 is varied with a unit 30 adjusting the degree of polishing within a predetermined range. The device is so constructed that the pressure-adjustable range of the unit 30 can be changed with a pressure-switching device 36. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rice mill having a white rice polishing function for removing oxides attached to the surface of polished rice, a brown rice sorting function, and a whitening function.

  Conventionally, this type of rice mill was configured as shown in FIG. 10 (see, for example, Patent Document 1). Hereinafter, the configuration will be described.

  As shown in FIG. 10, the milling machine body 1 has a box-shaped machine frame 2 in which a dehulling white cylinder 3 is horizontally mounted, and a rotating horizontal shaft 4 is fitted therein, and a rotating horizontal shaft 4 is mounted by a bearing 5. I support it. The rotating horizontal shaft 4 is provided with a milling trochanter 6 and a spiral trochanter 7 which are friction type rolls, respectively, and a milling chamber 8 is formed on the outer periphery thereof. A rice feed port 9 is provided on the rice feed side of the milling chamber 8. And a rice discharge port 11 provided with a milling degree adjusting device 10 is provided on the rice removal side. The rice feed opening 9 is provided with a hopper 12 for storing grains before milling, and a rice bran container 13 is provided below the whitening milling cylinder 3.

  The hopper 12 is provided with a counter-type optical sensor 14 as detection means for detecting the presence or absence of grains. The motor 15 as a drive unit transmits a rotational force to the rotary horizontal shaft 4 by the belt 16, and its operation is controlled by the control means 17. The operation switch 18 sends a rice milling start and stop signal to the control means 17.

  The milling degree adjusting device 10 is configured to obtain a predetermined milling pressure by adjusting the urging force of a resistance lid 19 provided so as to be press-contacted to the rice removal side of the milling chamber 8 with an adjusting knob 20.

In the above configuration, when the polished rice / brown rice supplied from the rice feed port 9 falls into the milling chamber 8 and is polished by the rotation of the milling trochanter 6, the milling degree adjusting device 10 appropriately controls the milling outlet 11 part. After the rice milling pressure is applied to a predetermined milling degree, the rice mill falls from the rice discharge port 11 and is discharged to the outside of the rice milling apparatus main body 1.
JP 2000-15118 A

  In such a conventional configuration, it is necessary to adjust a wide range of rice milling pressure in order to carry out with a single rice mill from stepped rice to white rice, but it cannot be widely used in a limited space. There was a problem in that it was impossible to adjust to a desired level of milling, because the level of milling varied greatly on one knob scale.

  Further, when the milled rice is generated between the milling milling cylinder 3 and the milling trochanter 6 which is a friction type roll because the milling pressure is high, the load on the motor 15 becomes large and the motor lock becomes impossible. However, even if you try to release the motor lock and try to discharge the internal rice, you have a problem that the rice discharge side is blocked by the resistance lid 19 and cannot be discharged. There was a problem that a lot of rice remained inside and could not be discharged.

  An object of the present invention is to solve the above-described conventional problems, and is intended to enable finely set rice polishing pressure so that rice can be polished from stepped rice to white rice.

  In order to achieve the above object, the present invention restricts the flow of brown rice in the milling chamber with a resistance lid that is arranged so as to be press-contacted to the rice removal side of the milling chamber, and determines the milling pressure in the milling chamber by a milling degree adjusting device. The pressure adjustment range of the whiteness adjusting device is changed by the pressure switching device.

  Thereby, finely set rice milling pressure can be set, and rice can be milled from stepped rice to white rice.

  The rice mill of the present invention can finely set the milling pressure, and can mill rice from stepped rice to white rice.

  The first invention comprises a milling chamber, a resistance lid that is arranged to be press-contacted to the rice removal side of the milling chamber and restricts the flow of brown rice in the milling chamber, and the milling pressure in the milling chamber is within a predetermined pressure range. A pressure switching device that changes a pressure adjustment range of the whitening degree adjusting device, and adjusts the whitening degree adjusting device by changing the pressure adjustment range by the pressure switching device. The range of pressure adjustment with the knob can be expanded, finely set rice pressure can be set, and rice can be polished from stepped rice to white rice.

  According to a second aspect of the present invention, in the first aspect of the invention, the pressure switching device can be set so that the resistance lid is positioned at a distance from the end surface on the rice removal side of the milling chamber. Regardless of the pressure adjustment range, a gap can be provided between the resistance lid and the end face on the rice removal side of the milling chamber, the rice milling pressure is completely eliminated, and the internal rice can be easily discharged. Even when locked, the rice can be discharged without removing the whitening cylinder and removing the rice inside, improving usability. By operating with a gap between the resistance lid of the milling chamber and the end surface of the milling chamber on the side of rice removal, the rice remaining inside can be discharged, and the amount of rice spilled during maintenance can be reduced. Easy to clean.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the pressure switching device changes the pressure adjustment range of the whitening degree adjusting device with a single knob, and the end face on the rice removal side of the resistance lid and the whitening chamber. And can be set so as to be spaced apart from each other, and operability can be improved.

  According to a fourth aspect of the present invention, there is provided a mounting plate for connecting the milling degree adjusting device and the pressure switching device in the first invention, wherein the milling degree adjusting device is a pressure that presses the resistance lid against the rice removal side of the milling chamber. An adjustment spring; and a pressure adjustment plate for displacing the pressure adjustment spring, wherein the pressure switching device supports the resistance lid and slides back and forth, and a slide that allows the slide shaft to move back and forth. And by moving the mounting plate back and forth by a force to move the slide shaft to the rice removal side of the milling chamber by the slide cam, the pressure adjustment spring is displaced and the pressure adjustment range is increased. If the pressure adjustment range is set to `` High '' by the pressure switching device, the force to move the slide shaft to the milling side of the milling chamber by the slide cam is large, and the reaction By moving the mounting plate forward, the pressure adjustment spring can be shrunk to set the pressure adjustment range to the high side. When the pressure adjustment range is set to `` low '' by the pressure switching device, the slide cam The force to move the slide shaft to the milling side of the milling chamber is small, the mounting plate can be moved to the milling side, the pressure adjustment spring can be extended, and the pressure adjustment range can be set to the lower side, reducing the number of parts. A cheap rice mill can be provided.

  According to a fifth aspect of the present invention, in the second aspect of the invention, further comprising a mounting plate that connects the milling degree adjusting device and the pressure switching device, wherein the milling degree adjusting device is a pressure that presses the resistance lid against the rice removal side of the milling chamber. An adjustment spring and a pressure adjustment plate for displacing the pressure adjustment spring, wherein the pressure switching device supports the resistance lid and slides back and forth, and a slide that allows the slide shaft to move back and forth. A cam, and the slide cam is moved in the opposite direction to the rice removal side by the slide cam, and can be set to be spaced from the end surface on the rice removal side of the milling chamber By moving the slide shaft in the opposite direction to the rice removal side of the milling chamber with the slide cam, the mounting plate moves to the end of the rice removal side, and the distance between the resistance lid and the end surface on the rice removal side of the milling chamber is increased. Set them apart It is possible, it is possible to provide a high number of parts is less reliable polished rice device.

  A sixth invention is the above-mentioned third invention, further comprising a mounting plate for connecting the milling degree adjusting device and the pressure switching device, wherein the milling degree adjusting device is a pressure that presses the resistance lid against the rice removal side of the milling chamber. An adjustment spring and a pressure adjustment plate for displacing the pressure adjustment spring, wherein the pressure switching device supports the resistance lid and slides back and forth, and a slide that allows the slide shaft to move back and forth. The pressure adjustment spring is displaced to change the pressure adjustment range by moving the mounting plate back and forth by the force to move the slide shaft to the rice removal side of the milling chamber by the slide cam. The slide cam is moved in the opposite direction to the rice removal side so that the resistance cover and the end surface on the rice removal side of the milling chamber can be set apart from each other. Spirit The pressure adjustment spring can be displaced by moving the mounting plate back and forth by the reaction of the force to move it toward the rice removal side of the chamber, and the pressure adjustment range can be changed. By moving in the opposite direction of the rice side, the mounting plate can be moved to the excretion side of the rice removal side, and can be set to be spaced from the end face of the rice removal side of the resistance lid and milling chamber. A rice mill with a small number of points and high reliability can be provided.

  According to a seventh invention, in any one of the fourth to sixth inventions, the pressure adjustment spring has two spring constants, and the pressure adjustment switching position is in the vicinity of the change point of the spring constant. Therefore, it is possible to provide a rice mill that is easy to use without a rapid change in the rice milling pressure.

  An eighth invention according to any one of the fourth to sixth inventions, further comprising a switching knob for operating the slide cam, wherein the switching knob is attached to the slide cam so as to be movable in the front-rear direction, and is biased forward by a spring. When the milled rice is discharged from the space generated by pushing the resistance lid during milling, the switching knob and slide cam can move freely back and forth and are stable without obstructing the movement of the resistance lid. Polished rice is possible.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
As shown in FIG. 1, the rice milling machine main body 21 has a box-shaped machine frame 22 with a dehulled white cylinder 23 mounted horizontally, and a rotating horizontal shaft 24 is fitted therein and a rotating horizontal shaft 24 is mounted by a bearing 25. I support it. The rotating horizontal shaft 24 is equipped with a milling trochanter 26 and a spiral trochanter 27 which are friction rolls, respectively, and a milling chamber 28 is formed on the outer periphery thereof. A rice feed port 29 is provided on the rice feed side of the milling chamber 28. And a rice discharge port 31 provided with a milling degree adjusting device 30 is provided on the rice removal side. The rice feed opening 29 is provided with a hopper 32 for storing grains before milling, and a straw container 33 is provided below the dehulled white cylinder 23.

  The hopper 32 is provided with a counter-type optical sensor (not shown) as detection means for detecting the presence or absence of grains. A motor 34 as a drive unit transmits a rotational force to the rotary horizontal shaft 24 by a belt 35, and its operation is controlled by a control means (not shown).

  The milling degree adjusting device 30 adjusts an urging force of a resistance lid 37 that can be press-contacted to the rice removal side of the milling chamber 28 via a pressure switching device 36 that changes the pressure adjustment range of the milling degree adjusting device 30. And a coil-shaped pressure adjustment spring 39 that presses the resistance lid 37 against the rice removal side of the milling chamber 28, and a pressure adjustment plate that displaces the pressure adjustment spring 39. 40.

  As shown in FIG. 2, the pressure switching device 36 includes a slide shaft 41 that supports the resistance lid 37 and slides the resistance lid 37 back and forth, and a slide cam 42 that enables the slide shaft 41 to move back and forth. The slide shaft 41 is pressed against the slide cam 42 by a spring 43. The switching knob 44 operates the slide cam 42. The switching knob 44 is attached to the slide cam 42 so as to be movable in the front-rear direction, and is biased forward by a spring 45.

  The pressure switching device 36 is arranged in parallel with the rotary horizontal shaft 24 and is attached to a rice removal side by a pressure adjusting spring 39 supported by a first support shaft 47 supported by a support plate 46. And is connected to the whiteness adjusting device 30.

  As shown in FIG. 3, the adjustment knob 38 is slidably provided on a second support shaft 49 that intersects the first support shaft 47, and includes a rotatable roller 50. The pressure adjustment plate 40 rotates around the first fulcrum 51, one surface 40a contacts the pressure adjustment spring 39, the other surface 40b contacts the roller 50, and the contact surface 40b is formed in a corrugated shape. Further, as the distance from the first fulcrum 51 is increased, the pressure adjusting spring 39 is curved toward the roller 50 side. The contact surface 40a of the pressure adjustment plate 40 and the pressure adjustment spring 39 is provided at a position where the distance from the first fulcrum 51 is shorter than the longest of the corrugated contact surface 40b.

  Here, the pressure switching device 36 rotates the slide cam 42 by performing an operation of switching the switching knob 44 to “high” or “low” as shown in FIG. By moving the plate 48, the pressure adjustment spring 39 is displaced to change the pressure adjustment range.

  That is, when the switching knob 44 is set to “low”, as shown in FIG. 2, the height of the abutting portion 42 a of the slide cam 42 with the slide shaft 41 is low, so that the slide shaft 41 is extended with the spring 43 extended. The pressing force for moving the whitening chamber 28 to the rice removal side, that is, the biasing force of the resistance lid 37 is small, and the mounting plate 48 moves to the rice removal side of the whitening chamber 28 and comes into contact with the support plate 46. The pressure adjusting spring 39 is not compressed by the pressure switching device 36.

  When the switching knob 44 is set to “high”, as shown in FIG. 5, the height of the abutting portion 42 b of the slide cam 42 with the slide shaft 41 is high, so that the slide shaft 41 can be moved with the spring 43 compressed. The pressing force to be moved to the rice removal side of the whitening chamber 28, that is, the urging force of the resistance lid 37 is large, and the mounting plate 48 moves forward so that a gap d is formed between the mounting plate 48 and the support plate 46. Thus, the pressure adjustment spring 39 is compressed by the pressure switching device 36, and the milling pressure is increased by the amount of compression of the pressure adjustment spring 39. In FIG. 4, the start button 51 is operated to start the operation, and “rice discharge” will be described later.

  At this time, the pressure adjustment spring 39 has two spring constants, and the pressure adjustment switching position is in the vicinity of the spring constant change point A as shown in FIG. FIG. 6 shows the relationship between the pressure adjustment range of the pressure adjustment spring 39 and the pressure that presses the resistance lid 37 against the rice removal side of the milling chamber 28, that is, the milling pressure. 36 is a pressure adjustment range by the whitening degree adjusting device 30 when switching 36 to “low”, and b0 to b10 are pressure adjustment ranges by the whitening degree adjusting device 30 when switching the pressure switching device 36 to “high”. is there.

  The operation and action of the above configuration will be described. When the start button 51 is pressed, the motor 34 rotates, the rotational force is transmitted by the belt 35, and the rotating horizontal shaft 24 rotates. Then, the polished rice / brown rice stored in the hopper 32 flows down to the polishing chamber 28 from the rice supply port 29. The rice is first fed into the spiral trochanter 27 and transferred, and is polished by the rotation of the milling trochanter 26. At this time, after the rice milling pressure is appropriately applied by the milling degree adjusting device 30 at the rice milling port 31 to reach a predetermined milling degree, the rice mill falls from the rice milling port 31 and is discharged to the outside of the rice milling apparatus main body 21.

  In the rice discharge port 31 part, the flow of the polished rice in the polishing chamber 28 is limited by the resistance lid 37 biased toward the rice discharge port 31 by the pressure adjusting spring 39, so that the so-called rice polishing pressure is increased. In the milling chamber 28, brown rice is milled by rubbing each other. Since the slitting milling cylinder 23 has a slit, the rice bran that has been rubbed down falls into the straw container 33 from the slit and is accommodated. When the rice in the hopper 32 runs out, there is no more rice passing through the opposed optical sensor, and the control means stops the motor 34 after a certain time.

  Next, the whiteness adjusting device 30 will be described in detail. The pressure adjusting spring 39 causes the mounting plate 48 to urge the resistance lid 37 toward the rice discharge port 31 via the pressure switching device 36, and the reaction force causes the pressure adjusting plate 46 to move the roller of the adjusting knob 38 around the fulcrum 51. The moment force that pushes 50 works.

  Here, when the switching knob 44 of the pressure switching device 36 is set to “low”, the height of the abutting portion 42a of the slide cam 42 with the slide shaft 41 is low, so that the slide shaft 41 is moved with the spring 43 extended. The pressing force to be moved to the rice removal side of the whitening chamber 28, that is, the urging force of the resistance lid 37 is small, and the mounting plate 48 moves to the rice removal side of the whitening chamber 28 and comes into contact with the support plate 46. The pressure adjustment spring 39 is not compressed by the pressure switching device 36. In this state, when the adjustment knob 38 is moved from the position shown in FIG. 3 (the “weak” position in FIG. 4) in a direction away from the fulcrum 51 by sliding on the second support shaft 49, the pressure adjustment is performed. Since the corrugated contact surface 40b of the plate 40 is curved toward the roller 50, it rotates about the fulcrum 51, the contact surface 40a presses the pressure adjusting spring 39, and the switching knob 44 is “strong” in FIG. In this position, as shown in FIG. 7, the total length of the pressure adjustment spring 39 is shortened, the urging force of the resistance lid 36 is increased, and the rice milling pressure is increased.

  On the other hand, when the adjustment knob 39 is moved in the direction approaching the fulcrum 51, the corrugated contact surface 40b of the pressure adjustment plate 40 is curved toward the roller 50, so that it rotates around the fulcrum 51 and the contact surface. 40a pushes the pressure adjusting spring 39, the entire length of the pressure adjusting spring 39 becomes longer, the urging force of the resistance lid 37 decreases, and the rice milling pressure decreases.

  In this way, when the switching knob 44 is set to “low”, a predetermined milling pressure can be obtained by selecting the adjustment knob 40 at an appropriate position within the pressure adjustment range a0 to a10 in FIG. it can.

  Next, when the switching knob 44 is set to “high”, the height of the contact portion 42 b of the slide cam 42 with the slide shaft 41 is high, so that the slide shaft 41 is moved into the whitening chamber 28 with the spring 43 compressed. The pressing force to move to the rice removal side, that is, the urging force of the resistance lid 37 is large, and the attachment plate 48 is moved forward by the reaction. As the mounting plate 48 moves forward, a gap d is formed between the mounting plate 48 and the support plate 46, the pressure adjusting spring 39 is compressed by the pressure switching device 36, and the pressure adjusting spring 39 is compressed by the amount compressed. Milling pressure increases. In this state, when the adjustment knob 38 is moved from the “weak” position in FIG. 4 to the “strong” direction, the total length of the pressure adjustment spring 39 is shortened and the urging force of the resistance lid 36 is increased as described above. However, the rice milling pressure increases. Conversely, when the adjustment knob 39 is moved from the “strong” position in FIG. 4 to the “weak” direction, the total length of the pressure adjustment spring 39 becomes longer, the urging force of the resistance lid 37 decreases, and the rice milling pressure decreases. To do.

  Thus, when the switching knob 44 is set to “high”, a predetermined milling pressure can be obtained by selecting the adjustment knob 40 at an appropriate position within the pressure adjustment range b0 to b10 in FIG. it can.

  As described above, in the present embodiment, since the pressure switching device 36 that changes the pressure adjustment range of the whiteness adjusting device 30 is provided, the whiteness adjusting device can be changed by changing the pressure adjustment range by the pressure switching device 36. The range of pressure adjustment by 30 adjustment knobs 38 can be expanded, finely set rice pressure can be set, and rice can be polished from stepped rice to white rice.

  The whitening degree adjusting device 30 includes a pressure adjusting spring 39 that presses the resistance lid 37 against the rice removal side of the whitening chamber 28, and a pressure adjusting plate 40 that displaces the pressure adjusting spring 39. Has a slide shaft 41 that supports the resistance lid 37 and slides back and forth, and a slide cam 42 that allows the slide shaft 41 to move back and forth. The slide cam 42 removes the slide shaft 41 from the milling chamber 28. Since the pressure adjustment spring 39 is displaced and the pressure adjustment range is changed by moving the mounting plate 48 back and forth by the force to be moved to the side, the pressure adjustment range is changed to “high” by the pressure switching device 36. Is set, the force to move the slide shaft 41 toward the rice removal side of the milling chamber 28 by the slide cam 42 is large. The adjustment spring 39 can be contracted to set the pressure adjustment range to the high side, and when the pressure adjustment range is set to “low” by the pressure switching device 36, the slide shaft 42 moves the slide shaft 41 to the whitening chamber 28. Since the force to move to the waste rice side is small, the mounting plate 48 can be moved to the waste rice side, and the pressure adjustment spring 39 can be extended to set the pressure adjustment range to the lower side. Can be provided.

  In addition, since the pressure adjustment spring 39 has two spring constants and the switching position of the pressure adjustment is in the vicinity of the change point of the spring constant, it provides an easy-to-use rice mill with no sudden change in the rice milling pressure. Can do.

  Further, the switching knob 44 for operating the slide cam 42 is attached to the slide cam 42 so as to be movable in the front-rear direction, and is biased forward by the spring 45, so that the milled rice is discharged from the space generated by pushing the resistance lid 37 during milling. In this case, the switching knob 44 and the slide cam 42 can freely move back and forth, and stable rice milling is possible without hindering the movement of the resistance lid 37.

(Embodiment 2)
As shown in FIG. 8, the pressure switching device 36 includes a slide shaft 41 that supports the resistance lid 37 and slides the resistance lid 37 back and forth, and a slide cam 42 that enables the slide shaft 41 to move back and forth. Similarly to the first embodiment, the slide cam 42 has a contact portion 42a at a position where it comes into contact with the slide shaft 41 when the switching knob 44 is set to “low”. And a contact portion 42c at a position that contacts the slide shaft 41 when it is set, and a contact portion 42c whose height is lower than the contact portion 42a. The pressure adjustment range of 30 can be changed, and the resistance lid 37 and the milling chamber 28 can be set so as to be positioned at a distance D from the end face on the side of rice removal.

  That is, as shown in FIG. 4, when the switching knob 44 is set to “rice discharge”, the contact portion 42 c comes into contact with the slide shaft 41, and the slide shaft 41 is moved in the opposite direction to the rice removal side by the spring 43. Thus, the resistor lid 37 and the milling chamber 28 can be set so as to be positioned at a distance D from the end face on the rice removal side. Other configurations are the same as those of the first embodiment, and the same reference numerals are given and description thereof is omitted.

  The operation and action of the above configuration will be described. When the switching knob 44 is set to “low” or “high” and the operation is started, the polished rice / brown rice stored in the hopper flows down to the polishing chamber 28 from the rice feed opening and is first fed into the spiral trochanter. And is polished by the rotation of the milling trochanter 26. At this time, after the rice milling pressure is appropriately applied by the milling degree adjusting device 30 at the rice milling port 31 to reach a predetermined milling degree, the rice mill falls from the rice milling port 31 and is discharged to the outside of the rice milling apparatus main body.

  At this time, because the milling pressure is high, if broken rice is generated between the milling milling cylinder 3 and the milling trochanter 6 that is a frictional roll, the load on the motor becomes large and the motor lock is disabled so that the motor cannot rotate. It may happen.

  When releasing the motor lock, if the adjustment knob 38 is set to “weak” and the switching knob 44 is set to “rice discharge”, the contact portion 42c of the slide cam 42 contacts the slide shaft 41, and the spring 43 By moving the slide shaft 41 in the opposite direction to the rice removal side, the mounting plate 48 moves to the end of the rice removal side, and a distance D is formed between the resistance lid 37 and the end surface on the rice removal side of the milling chamber 28. Can be separated.

  In this state, when the adjustment knob 38 is slid on the second support shaft 49 and moved away from the fulcrum 51 and set to “strong”, as in the first embodiment, FIG. As shown, the total length of the pressure adjusting spring 39 is shortened. Even in this state, the distance D can be separated from the end surface of the resistance lid 37 and the milling chamber 28 on the rice removal side.

  In this way, by setting the switching knob 44 to “rice discharge”, regardless of the pressure adjustment range of the whitening degree adjusting device 30, the distance between the resistance lid 37 and the end face on the rice discharge side of the whitening chamber 28. D can be provided, the rice milling pressure is completely eliminated, and the internal rice can be easily discharged. Therefore, even if the motor is locked, the removal work is performed by removing the whitening cylinder 23 and discharging the internal rice. It is possible to discharge rice without improving the usability.

  As described above, in the present embodiment, the resistance lid 37 can be set so as to be positioned at a distance D from the end face of the milling chamber 28 on the side of rice removal, so that the pressure adjustment range of the milling degree adjusting device 30 can be set. Regardless, the distance D can be provided between the resistance lid 37 and the end surface of the milling chamber 28 on the side of rice removal, so that the rice milling pressure is completely eliminated and the rice inside can be easily discharged, so that the motor is locked. Even without removing the whitening cylinder 23 and removing the internal rice, the rice can be discharged without the need for care, and the usability can be improved. The amount of rice spilled during maintenance can be discharged by operating with a distance D between the resistance lid 37 and the end face on the rice removal side of the whitening chamber 28, and by operating the state with a gap D. Can be reduced and it is easy to care for.

  Further, the pressure switching device 36 changes the pressure adjustment range of the whitening degree adjusting device 30 with one switching knob 44 and is positioned with a gap D between the resistance lid 37 and the end surface of the whitening chamber 28 on the waste rice side. Since the setting is made possible, the operability can be improved.

  The whitening degree adjusting device 30 includes a pressure adjusting spring 39 that presses the resistance lid 37 against the rice removal side of the whitening chamber 28, and a pressure adjusting plate 40 that displaces the pressure adjusting spring 39. Has a slide shaft 41 that supports the resistance lid 37 and slides back and forth, and a slide cam 42 that allows the slide shaft 41 to move back and forth. The slide cam 42 moves the slide shaft 41 in the direction opposite to the rice removal side. Since the slide cover 41 can be set so as to be positioned at a distance D from the resistance lid 37 and the end face on the rice removal side of the whitening chamber 28, the slide shaft 42 is moved to the rice removal side of the whitening chamber 28 by the slide cam 42. By moving in the opposite direction, the mounting plate 48 moves to the end of the rice removal side, and can be set to be spaced from the end surface of the rice removal side of the resistance lid 37 and the whitening chamber 28. Less Ku can be provided a highly reliable polished rice device.

  As described above, the rice milling apparatus according to the present invention can finely set the rice polishing pressure, and can polish rice from stepped rice to white rice, so that the white rice that removes oxides on the surface of the polished rice is removed. It is useful as a rice mill with a polishing function, a brown rice sorting function and a whitening function.

Sectional drawing of the rice mill in Embodiment 1 of this invention The main part enlarged sectional view of the state where the milling degree adjusting device of the rice mill is weak and the pressure switching device is set low. Top view of the main part of the rice mill with the milling degree adjusting device weak and the pressure switching device set low. Enlarged front view of the operation unit of the rice mill An enlarged cross-sectional view of the main part of the rice mill with the milling degree adjusting device weak and the pressure switching device set high. Characteristic diagram showing the relationship between the pressure adjustment range of the rice mill and the milling pressure An enlarged cross-sectional view of the main part of the rice mill with the milling degree adjustment device set to strong and the pressure switching device set to low. Sectional drawing of the principal part of the state which set the milling degree adjustment apparatus of the rice milling machine in Embodiment 2 of this invention weakly, and set the pressure switching apparatus to rice discharge | emission Cross-sectional view of the main part with the milling degree adjustment device of the same rice mill and the pressure switching device set to rice discharge Cross-sectional view of a conventional rice mill

Explanation of symbols

28 Whitening room 30 Whitening degree adjusting device 36 Pressure switching device 37 Resistance lid

Claims (8)

A milling chamber, a resistance lid that is disposed so as to be press-contacted to the rice removal side of the milling chamber and restricts the flow of brown rice in the milling chamber, and a milling degree adjusting device that varies the milling pressure in the milling chamber within a predetermined pressure range And a rice mill having a pressure switching device for changing a pressure adjustment range of the milling degree adjusting device. 2. The rice milling apparatus according to claim 1, wherein the pressure switching device can be set so that the resistance lid is positioned at a distance from the end surface of the milling chamber on the side of rice removal. The pressure switching device can be set so as to change the pressure adjustment range of the whitening degree adjusting device with a single knob and to be positioned at a distance from the end surface on the rice discharge side of the whitening chamber. 2. A rice mill according to 2. The milling degree adjusting device includes a mounting plate that connects the milling degree adjusting device and the pressure switching device, and the milling degree adjusting device includes a pressure adjusting spring that presses the resistance lid against the rice removal side of the milling chamber, and a pressure adjustment that displaces the pressure adjusting spring. The pressure switching device includes a slide shaft that supports the resistance lid and slides back and forth, and a slide cam that allows the slide shaft to move back and forth, and the slide cam causes the slide shaft to move. The rice mill according to claim 1, wherein the pressure adjustment spring is displaced and the pressure adjustment range is changed by moving the mounting plate back and forth by a force for moving the rice to the rice removal side of the milling chamber. The milling degree adjusting device includes a mounting plate that connects the milling degree adjusting device and the pressure switching device, and the milling degree adjusting device includes a pressure adjusting spring that presses the resistance lid against the rice removal side of the milling chamber, and a pressure adjustment that displaces the pressure adjusting spring. The pressure switching device includes a slide shaft that supports the resistance lid and slides back and forth, and a slide cam that allows the slide shaft to move back and forth, and the slide cam causes the slide shaft to move. The rice milling apparatus according to claim 2, which can be set so as to be positioned at a distance from the end face of the rice removal side of the milling chamber by moving the rice cake in a direction opposite to the rice removal side. The milling degree adjusting device includes a mounting plate that connects the milling degree adjusting device and the pressure switching device, and the milling degree adjusting device includes a pressure adjusting spring that presses the resistance lid against the rice removal side of the milling chamber, and a pressure adjustment that displaces the pressure adjusting spring. The pressure switching device includes a slide shaft that supports the resistance lid and slides back and forth, and a slide cam that allows the slide shaft to move back and forth, and the slide cam causes the slide shaft to move. The pressure adjustment spring is displaced by moving the mounting plate back and forth by the force to move the plate to the rice removal side of the milling chamber, and the pressure adjustment range is changed by the slide cam. 4. A rice mill according to claim 3, wherein the rice mill can be set so as to be spaced from the end face of the milling side of the milling chamber by moving in the opposite direction. The rice mill according to any one of claims 4 to 6, wherein the pressure adjustment spring has two stages of spring constants, and the pressure adjustment switching position is in the vicinity of a change point of the spring constant. The rice mill according to any one of claims 4 to 6, further comprising a switching knob for operating a slide cam, the switching knob being attached to the slide cam so as to be movable in the front-rear direction and biased forward by a spring.

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