JP4486940B2 - Vertical friction milling machine - Google Patents

Description

  The present invention relates to a vertical friction pulverizer for cerealing grains.

  Generally, in a rice mill, a grinding mill for rough finishing is provided in the first process, and a friction mill for finishing in the next process.

  In a grinding mill, when the milling pressure is applied strongly, the surface of the brown rice is deeply damaged and the quality is deteriorated, and the milling roll (grinding stone) may break and break down. For this reason, the grinding mill is used for the purpose of promoting the milling action (peeling action of the straw layer) of the friction milling machine in the next process by polishing the rice with a weak pressure and slightly scratching the surface of the brown rice. .

  Further, the friction milling machine applies a high rice milling pressure to perform the peeling action of the straw layer on the brown rice surface and the polishing action of the white rice surface.

  As a recent cerealing device, a so-called vertical grinding friction integrated type milling machine in which a grinding pulverizing machine and a friction pulverizing machine are integrally formed in place of a conventional apparatus having a grinding pulverizing machine and a friction pulverizing machine co-located. Grain devices are widespread (see, for example, Patent Document 1).

  As shown in FIG. 5, the vertical friction pulverizer in the vertical grinding and friction integrated pulverizer is provided with a cylindrical friction pulverizer (pulverizing cylinder) 158. A shaft-shaped friction milling roll 156 is provided in the friction milling mill 158, and a friction milling chamber 160 is formed between the friction milling mill 158 and the friction milling roll 156.

  An annular grain outlet 160 </ b> A is formed in the lower part of the frictional grain chamber 160. In addition, an annular resistance valve (a grain resistance valve) 180 that opens and closes the grain outlet 160A is provided at the lower portion of the friction grain chamber 160. A support arm 184 is rotatably attached to the annular resistance valve 180. An upper end of a spring (tensile coil spring) 194 is attached to the support arm 184, and a lower end of the spring 194 is connected to the motor 196. A stationary cylinder 202 and a bearing 204 are sequentially provided on the inner peripheral side of the annular resistance valve 180, and a circumferential wall of a vertical rotation main shaft 206 constituting a vertical friction pulverizer is in contact with the bearing 204.

  With this configuration, the annular resistance valve 180 moves up and down by adjusting the urging force applied to the annular resistance valve 180 by the motor 196, and the resistance imparted to the grains in the friction cereal chamber 160 by the annular resistance valve 180. It is adjusted so that the grain fineness is adjusted.

By the way, in such a conventional vertical friction milling machine, it is preferable that a structure becomes simpler from the viewpoints of maintainability and ease of assembly. This is not limited to the case where rice grains are polished, and the same applies to cases where general grains are polished.
Japanese Patent No. 3029333

  In view of the above facts, an object of the present invention is to provide a vertical friction pulverizer having a simplified configuration by reducing the number of parts.

According to the first aspect of the present invention, there is provided a friction cereal chamber formed inside a friction cereal cylinder that is cylindrical in the longitudinal direction, and an annular cereal drain opening in the bottom wall of the friction cereal chamber. The outlet is energized toward the grain outlet so as to open the grain outlet at an opening corresponding to the pressing force by the grain in the friction cereal chamber, and the resistance for scouring is An annular resistance valve applied to the grains in the frictional grain chamber, and the resistance valve abuts the outer periphery of the grain outlet and closes the grain outlet, and the resistance valve The inner peripheral side is not in contact with other members.

  In the invention according to claim 1, as described above, the inner peripheral side of the resistance valve is not in contact with other members. Therefore, it is necessary to provide a member in contact with the resistance valve on the inner peripheral side of the resistance valve as in the prior art. Absent. Therefore, it is possible to provide a vertical friction pulverizer having a simplified configuration by reducing the number of parts.

  The invention according to claim 2 is characterized in that a stopper for restricting movement of the resistance valve is provided below the resistance valve.

  Thereby, it can prevent that a resistance valve moves too much downward by providing the stopper of a simple structure. In addition, when an arm or the like is attached to the resistance valve so as to be rotatable, and the resistance valve is urged toward the grain outlet by this arm, the resistance valve rotates by contacting the stopper. The resistance valve is held in a stable state at the lowered position.

  ADVANTAGE OF THE INVENTION According to this invention, the vertical friction pulverizer which reduced the number of parts and simplified the structure is realizable.

  Hereinafter, embodiments will be described and embodiments of the present invention will be described. In the present embodiment, a vertical grinding and grinding machine 10 as shown in FIGS. 1 and 2 will be described as an example of a vertical friction pulverizer according to the present invention.

  The vertical grinding-friction-integrated grain refiner 10 includes a case 12, and an upper partition frame 14, a lower partition frame 18, and a horizontal partition base 20 are installed on the case 12 in this order from the top.

  A hollow vertical rotation main shaft 22 is erected inside the case 12, and the vertical rotation main shaft 22 is rotatably supported by a vertical fixed cylinder portion 26 fixed to the horizontal partition 20. A lower end of the vertical rotation main shaft 22 protrudes from the horizontal partition 20, and a passive pulley 28 is fixed to the lower end of the vertical rotation main shaft 22. The passive pulley 28 is connected to a motor (not shown) via a belt (not shown).

  A plurality of blow holes 22A are formed in the peripheral surface of the lower part of the vertical rotation main shaft 22, and a blow cylinder 30 is attached to the vertical fixed cylinder portion 26 corresponding to the blow holes 22A. The blow cylinder 30 is connected to a blower (not shown), and a blow chamber 32 is formed between the peripheral surface of the lower part of the vertical rotation main shaft 22 and the inner wall of the vertical fixed cylinder part 26. In addition, a plurality of air outlets (not shown) are formed on the circumferential surface of the substantially central portion in the axial direction of the longitudinally rotating main shaft 22, and are blown by a blower from the blow hole 22 </ b> A via the blow cylinder 30 and the blow chamber 32. Air blown into the interior (hollow portion) of the longitudinal rotation main shaft 22 is ejected from this blast port.

  The upper part of the vertical rotation main shaft 22 protrudes from the upper partition frame 14 of the case 12, and a fixing screw 50 is screwed to the upper end of the vertical rotation main shaft 22.

  Above the case 12, a cylindrical grinding part 24 for grinding and graining the rice grains is provided. The lower end of the grinding portion 24 is fixed to the upper partition frame 14 of the case 12, and the upper portion of the longitudinal rotation main shaft 22 is disposed inside the grinding portion 24. A forced feeding cylinder 25 for feeding rice grains (brown rice) is connected and fixed to the grinding unit 24.

  The grinding unit 24 includes a grinding cereal roll 27, a grinding cereal cylinder (exfoliating cylinder) 29 located on the outer peripheral side of the grinding cereal roll 27, and an upper end on the inner peripheral side of the grinding cereal roll 27. A rotating cylinder 31 is provided. A passive pulley 33 is attached to the outer peripheral side of the lower end portion of the rotating cylinder 31, and a bearing 35 is provided between the inner periphery of the rotating cylinder 31 and the outer periphery of a cereal sending cylinder 34 described later. It can be rotated around the grain 34. Between the grinding grain roll 27 and the grinding grain cylinder 29 is a grinding grain chamber 36. In the grinding unit 24, the rice grains from the forced supply cylinder 25 are supplied from the lower end, and are fed from the upper part after grinding.

  Inside the grinding part 24, a cerealing part 37 for sending the rice grains downward is provided. The rice grain fed from the grinding part 24 flows into the cerealing part 37 from above.

  The cerealing unit 37 includes a cerealing cylinder 34 that supports the bearing 35 from the inside, and a cerealing roll 40 that is positioned inside the cerealing cylinder 34 and is fixed to the longitudinally rotating main shaft 22 at the upper end. Is provided. On the outer peripheral surface of the cerealing roll 40, a single cerealing spiral 40R for feeding rice grains downward by rotation is formed. A cerealing chamber 42 is provided between the cerealing roll 40 and the cerealing cylinder 34. The cerealing roll 40 rotates integrally with the longitudinal rotation main shaft 22.

  Below the cerealing part 37, a friction part 38 that frictionally refines the rice grains fed from the cerealing part 37 is provided.

  In the friction part 38, a substantially cylindrical frictional grain roll 56 is fitted to the longitudinally rotating main shaft 22 below the cerealing roll 40, and the frictional pulverizing roll 56 is integrally formed on the same axis as the cerealing roll 40. It is connected. Parallel ridges 56 </ b> A are formed at a plurality of locations on the outer peripheral surface of the friction pulverizing roll 56, and the parallel ridges 56 </ b> A are parallel to each other along the axial direction of the friction pulverizing roll 56. Further, a plurality of blast holes 56 </ b> B are formed on the peripheral surface of the frictional grain roll 56.

  Around the frictional grain roll 56, a frictional grain cylinder (removal cylinder) 58 is provided, and the frictional grain cylinder 58 is disposed between the upper partition frame 14 and the lower partition frame 18. The shape of the friction milling cylinder 58 is, for example, a substantially hexagonal (deformed dodecagonal) cylinder. A friction grain chamber 60 is formed between the friction milling cylinder 58 and the friction milling roll 56. Further, a large number of friction removal holes 58 </ b> A are formed on the peripheral surface of the frictional milling cylinder 58. Here, when the vertical rotation main shaft 22 is rotated, the frictional grain roll 56 rotates integrally, and the rice grains in the frictional grain chamber 60 are polished while being stirred by the plurality of parallel protrusions 56A.

  A milling cylinder frame 62 is provided around the frictional milling cylinder 58, and a cylindrical outer cylinder 68 is provided around the milling mill frame 62. A scissor discharge pipe 70 is fixed to the side wall of the outer cylinder 68, and a removal chamber 72 is formed inside the outer cylinder 68. The soot discharge pipe 70 is connected to a blower (not shown).

  A friction valve 80 is provided below the frictional pulverizing roll 56 to form a bottom wall of the frictional pulverizing chamber 60 and to provide cereal resistance to the rice grains.

  As shown in FIG. 3, the resistance valve 80 includes a cylindrical portion 79 having an inner diameter larger than that of the longitudinal rotation main shaft 22 and a collar portion 81 formed outside the cylindrical portion 79. On the inner peripheral side of the cylindrical portion 79, a conventional stationary cylinder, a bearing, and the like are not provided, and the vertical rotation main shaft 22 is located on the inner peripheral side of the cylindrical portion 79 through a space. The collar portion 81 extends from the upper portion to the middle portion of the cylindrical portion 79, and the upper surface of the collar portion 81 is a truncated cone-shaped slope 83.

  The lower partition frame 18 is formed with a circular hole 19 that opens the bottom side of the friction brewing chamber 60. A first mortar-shaped inclined surface 17 that contacts the lower peripheral surface 83E of the truncated cone-shaped inclined surface 83 of the resistance valve 80 is formed on the lower surface side of the lower partition frame 18 at the periphery of the circular hole 19. It is formed according to. A concave portion 57 is formed in the lower end portion of the frictional grain roll 56, and the second mortar-shaped slope 55 for forming a relief with respect to the upper peripheral surface 83 </ b> I of the truncated cone-shaped slope 83 in the concave portion 57. Is formed.

  The resistance valve 80 is moved up and down, and when the resistance valve 80 is lowered, an annular grain outlet 60 </ b> A is opened between the truncated cone-shaped slope 83 and the first mortar-shaped slope 17. Yes. When the resistance valve 80 is located at the upper end position, the lower peripheral surface 83E of the truncated cone-shaped slope 83 comes into contact with the first mortar-shaped slope 17 and the grain outlet 60A is closed.

  Resistance guides 74A and 74B are provided below the lower partition frame 18, and stoppers 76A and 76B are attached to the resistance guides 74A and 74B, respectively. The stoppers 76A and 76B respectively extend to the lower side of the flange portion 81 of the resistance valve 80. When the resistance valve 80 reaches the lower end position, the lower surface side of the collar portion 81 abuts against the stoppers 76A and 76B. The downward movement of the resistance valve 80 is restricted.

  As shown in FIGS. 3 and 4, a resistance valve link frame 82 that transmits an upward biasing force to the resistance valve 80 is provided on the lower side of the collar portion 81. The resistance valve link frame 82 includes a U-shaped portion 86 having two support arm portions 84A and 84B extending in parallel to each other and extending from the base end side of the U-shaped portion 86 to the arm portions 84A and 84B. And a support bar portion 88 extending in a direction opposite to the extending direction.

  A support hole 90A, which is a slightly elongated hole in the horizontal direction, is formed at the distal end portion of the arm portion 84A, and the distal end portion of the arm portion 84B is the same.

  A projecting portion 92A is rotatably provided on the front side of the tubular portion 79 below the collar portion 81 so as to be rotatably supported by the support hole 90A of the arm portion 84A, and is opposite to the projecting portion 92A ( Also on the back surface side, a protrusion (not shown) is formed to be rotatably supported in the support hole of the other arm portion 84B.

  A support hole 88H is formed in a portion of the support bar portion 88 near the U-shaped portion 86, and a convex portion 93T extending from a support portion 93 provided on the support base 100 described later is formed in the support hole 88H. Has been inserted. With this configuration, the resistance valve link frame 82 is pivotally supported. The tip of the support bar 88 is connected to a lower motor (milling resistance adjusting motor) 96 via a tension coil spring 94 that adjusts the grain resistance, and by operating the motor 96, the tension coil spring 94 is operated. The urging force (pressure) applied to the resistance valve 80 via the resistance valve link frame 82 is adjusted, and the resistance valve 80 closes the grain outlet 60A with this urging force. Thereby, resistance for milling is imparted to the rice grains in the frictional grain chamber 60, and the grain outlet 60 </ b> A is opened at an opening corresponding to the pressing force by which the rice grains press the resistance valve 80 downward. .

  A funnel-shaped discharge disc 98 is fitted to the vertical rotation main shaft 22 below the resistance valve 80, and the discharge disc 98 rotates integrally with the vertical rotation main shaft 22. The discharge board 98 is disposed in a bowl-shaped support base 100 formed integrally with the vertical fixed cylinder portion 26. A discharge basket 102 is fixed to the support table 100, and the rice grains that have fallen into the support table 100 from the friction cereal chamber 60 after finishing the cereals are moved from the discharge basket 102 to the outside of the case 12 by the rotating discharge disk 98. It is the composition which is discharged.

(Function, effect)
Next, the operation and effect of the present embodiment will be described.

  In the vertical grinding friction-integrated cerealing apparatus 10, a vertical rotation main shaft 22 is rotated by a motor (not shown) via a belt (not shown) and a passive pulley 28, and the cerealing roll 40 connected on the same axis, The friction grain roll 56 and the discharge disc 98 are rotated together. Further, the rotating cylinder 31 and the grinding roll 27 are rotated via a belt and a passive pulley 33 by another motor (not shown). In this state, the rice grains (brown rice) are supplied to the forced feeding cylinder 25 via the cereal tube 16. The supplied rice grains are fed to the grinding unit 24 and ground by the grinding unit 24.

  The rice grains that have undergone the grinding process in the grinding unit 24 are sent to the cerealing unit 37 and further sent to the friction unit 38.

  The rice grains sent to the friction unit 38 are conveyed into the friction cereal chamber 60 and are agitated by the plurality of parallel protrusions 56 </ b> A of the friction cereal roll 56. As a result, the glutinous layer on the surface of the rice grain is removed by the frictional force acting between the rice grains.

  Further, by operating the motor 96, the urging force that the tension coil spring 94 applies to the resistance valve 80 via the resistance valve link frame 82 is adjusted. Therefore, the resistance valve 80 gives a controlled resistance to the rice grains in the friction cereal chamber 60.

  This resistance valve 80 opens the grain outlet 60 </ b> A at an opening degree corresponding to the pressing force of the rice grains in the friction cereal chamber 60. When opening, the collar 81 is pressed by the rice grains, and the resistance valve 80 is lowered against the urging force applied from the resistance valve link frame 82. As a result, the grain outlet 60A is opened at an opening degree corresponding to the pressing force to the resistance valve 80 by the rice grains in the friction cereal chamber 60. Then, the rice grains that have undergone the friction treatment fall from the grain outlet 60A into the support base 100 and are discharged out of the case 12 from the discharge basket 102 by the rotating discharge disc 98.

  Here, when the resistance valve 80 is lowered as described above, even if the inner peripheral side of the resistance valve 80 is not in contact with other members (for example, the stationary cylinder 202 and the bearing 204 as shown in FIG. 5), The resistance valve 80 can be smoothly lowered.

  The lower end position of the resistance valve 80 is determined by the stoppers 76A and 76B. When the resistance valve 80 comes into contact with the stoppers 76A and 76B, the rotation of the resistance valve 80 is restricted, and the resistance valve 80 is held in a stable state at the lowered position. In addition, the stoppers 76A and 76B having a simple configuration can prevent the resistance valve 80 from moving too much downward.

  When the rice grain is discharged from the grain outlet 60A and the pressing force to the resistance valve 80 by the rice grains in the friction cereal chamber 60 is lowered, the resistance valve 80 is raised by the urging force from the resistance valve link frame 82 accordingly. To do. When rising, the resistance valve 80 can rise smoothly even when the inner peripheral side of the resistance valve 80 is not in contact with other members, as in the case of lowering.

  In the above description, it has been described that the rice grains are polished by the vertical grinding friction integrated grain refiner 10; however, grains other than the rice grains (eg, wheat) can also be refined.

  As described above, according to the present embodiment, the resistance valve 80 can be smoothly moved up and down without providing any parts between the inner peripheral side of the cylindrical portion 79 and the longitudinal rotation main shaft 22. Accordingly, the configuration can be simplified by reducing the number of parts, and the low-cost vertical grinding and friction-integrated grain refiner 10 having excellent maintainability and ease of assembly can be obtained.

  The embodiments of the present invention have been described with reference to the embodiments. However, the above embodiments are merely examples, and various modifications can be made without departing from the scope of the invention. Needless to say, the scope of rights of the present invention is not limited to the above embodiment.

It is a front view of the vertical grinding friction integrated grain refiner concerning one embodiment of the present invention. It is a front sectional view of the vertical grinding friction integrated grain refiner concerning one embodiment of the present invention. It is a front partial expanded sectional view of the vertical grinding friction integrated grain refiner concerning one embodiment of the present invention. It is a cross-sectional perspective view which shows the structure by which a resistance valve is urged | biased by the resistance valve link frame with the vertical grinding friction integral type grain refiner which concerns on one Embodiment of this invention. It is a front partial expanded sectional view of the conventional vertical grinding friction integrated grain refiner.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vertical grinding integrated friction machine 56 Friction flour roll 58 Friction flour mill 60 Friction flour chamber 60A Grain outlet 80 Resistance valve 158 Friction flour cylinder 156 Friction flour roll 160 Friction flour chamber 160A Grain Grain outlet 180 Annular resistance valve (resistance valve)

Claims (2)

A friction milling chamber formed inside the friction milling cylinder that is cylindrical in the longitudinal direction;
An annular grain outlet opening in the bottom wall of the friction milling chamber;
The friction milled grain is energized toward the grain outlet so as to open the grain outlet at an opening corresponding to the pressing force by the grain in the friction milling chamber, and the resistance for scouring is increased. An annular resistance valve applied to the grain in the room;
With
The resistance valve is brought into contact with the outer periphery of the grain outlet and closes the grain outlet, and the inner periphery of the resistance valve is not in contact with other members. Grain machine.   The vertical friction pulverizer according to claim 1, wherein a stopper for restricting movement of the resistance valve is provided below the resistance valve.

Images