JP2006021084A - Rice polisher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice polisher capable of shortening and facilitating the disassembling work of grinding/friction rolls and polishing screws. <P>SOLUTION: This rice polisher is provided with the coaxially continued grinding roll 14, friction roll 15 and polishing rolls 16, 17 with shaft ends attachably and detachably connected; and a pair of upper main shaft 19 and lower main shaft 20 rotatably pivoting the coaxially continued grinding roll 14, the friction roll 15 and the polishing rolls 16, 17. The coaxially continued grinding roll 14, friction roll 15 and polishing rolls 16, 17 are made separable by being pivoted by the upper and lower main shafts. In a state of at least the friction roll 15 being separated from the coaxially continued grinding roll 14, friction roll 15 and polishing rolls 16, 17, the grinding roll 14, friction roll 15 and polishing rolls 16, 17 are made to be removable from a space between the upper and lower main shafts. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rice milling machine, and more particularly to a vertical-type one-pass and horizontal-type one-pass rice milling machine that completes milling only by passing it once through a milling room.

2. Description of the Related Art Conventionally, there are vertical one-pass rice mills and horizontal one-pass rice mills that complete grinding and friction milling by passing rice grains through the milling chamber once in the vertical or horizontal direction.
For this reason, in such a rice mill, the grinding roll, the friction roll and the milling screw are rotatably arranged in the milling chamber in a state where they are linked to one shaft.

However, in the above-described conventional rice milling machine, the main shaft for rotation drive is passed through the grinding roll, the friction roll, and the milling screw that are connected to one axis. For this reason, when exchanging or disassembling the grinding roll, friction roll, and precision screw, after disassembling the shaft end of the main shaft for rotation drive, the grinding roll, friction roll, etc. must be pulled out in the axial direction. Not only did the disassembly work take time, but the knowledge and skills of workers who were proficient in disassembly work were required.
In order to solve such problems, Patent Document 1 proposes a configuration in which a stirring roll and a screw roll that are attached to the main shaft for rotation drive can be divided into a split shape. However, there is a problem that the number of parts increases and the number of parts manufacturing processes increases.

JP 63-267450 A

  Accordingly, the present invention has been made to solve the above-described problems of the prior art, and provides a rice mill capable of shortening and facilitating the disassembling work of a grinding / friction roll and a milling screw. Objective.

In order to achieve the above object, the invention described in claim 1 is a rice milling machine that performs milling by rotating a grinding roll, a friction roll, and a milling screw connected to one axis in a milling room.
In the rice mill, the shaft end of the grinding roll, the friction roll, and the milling screw connected to the single shaft is detachably coupled, and the grinding roll, the friction roll, and the milling screw connected to the single shaft are rotatable. A grinding roll, a friction roll, and a fine screw, which are provided with a pair of upper and lower spindles to be supported, are separated in the axial direction while being supported by the upper spindle and the lower spindle. In the state where at least the friction roll is separated from the grinding roll, the friction roll and the fine screw connected to the single shaft, the friction roll, the grinding roll and the fine roll are provided between the upper main shaft and the lower main shaft. The screw can be removed.

  In order to achieve the above object, in addition to the configuration of the invention described in claim 1, the invention described in claim 2 can be separated from the grinding roll, friction roll, and fine screw in the axial direction. It is characterized in that at least one of a concave portion for connecting and a protruding portion is integrally formed.

  According to the first aspect of the present invention, the grinding roll, the friction roll and the milling screw arranged in a line between the upper main spindle and the lower main spindle of the rice mill can be separated in the axial direction. Has been. Thereby, the grinding roll, the friction roll, and the fine screw connected to one axis are rotationally driven by the upper main spindle and the lower main spindle without penetrating the rotation driving main spindle therein, and perform grinding, fine grinding by friction, and at least When the friction roll is separated in the axial direction, the friction roll, the grinding roll, and the fine screw can be removed from between the upper main spindle and the lower main spindle. Therefore, when the grinding roll, the friction roll, and the fine screw are disassembled, the upper main spindle and There is no need to disassemble the lower spindle. Accordingly, it is possible to provide a rice mill capable of shortening and facilitating the work of disassembling the grinding roll, friction roll and milling screw.

  According to invention of Claim 2, a grinding roll, a friction roll, and a fine screw are couple | bonded so that isolation | separation is possible by the recessed part and protrusion which were integrally formed in each. Thereby, in addition to the effect of the invention of the first aspect, even if the grinding roll, the friction roll and the fine screw connected to one axis are separable in the axial direction, the number of parts and the parts manufacturing The number of processes does not increase.

  A grinding roll that can be separated from the upper main shaft and the lower main shaft between the upper main shaft and the lower main shaft, and can be separated from the upper main shaft and the lower main shaft when separated from each other in the axial direction. By arranging a friction roll and a milling screw, a rice milling machine capable of shortening and facilitating maintenance has been realized.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the external appearance of a rice milling machine to which the present invention is applied, FIG. 2 is a schematic diagram showing the internal structure of the rice milling machine in the example, and FIG. 4 is a side view of the upper main shaft in the example, FIG. 5 is a side view of the lower main shaft in the example, and FIG. 6 is a schematic view of a grinding roll, a friction roll, and a fine screw connected to one axis in the example. FIG. 7 is a schematic view showing a procedure for removing the friction roll, the grinding roll, and the fine screw from between the upper main shaft and the lower main shaft in the same example.

  A rice mill to which the present invention is applied will be described. As shown in FIG. 1, the rice milling machine 10, for example, mills by grinding and rubbing by simply passing the rice grains introduced from the upper inlet 11 through the milling chamber 12 (shown in FIGS. 2 and 3). And is applied to a vertical type one-pass rice mill that discharges from the lower discharge port 13. As shown in FIGS. 2 to 3, the milling machine 10 includes a grinding roll 14, a friction roll (also referred to as a milling roll) 15, a milling screw upper 16 as a milling screw, and a milling screw bottom, as shown in FIGS. A pair of upper and lower main shafts 19 and 20 (shown in FIG. 3) are connected to the upper and lower shaft ends of 17 (hereinafter collectively referred to as the fine shaft 18) so as to be detachable. Are arranged opposite to each other with a preset set distance at a position sandwiching the sperm chamber 12 from above and below.

2 to 4, the upper main shaft 19 is formed on the upper side of the sperm chamber 12 by four vertically extending legs 21 (only one leg on the rear left side is shown in FIG. 2). The upper bearing case 22 disposed in the upper and lower portions of the upper bearing case 22 is vertically supported by the upper bearing 23 so as to be rotatable. The upper main shaft 19 is a hollow shaft and serves as an intake port for facilitating removal of the cocoon from the semen chamber 12. The air sent from the upper main shaft 19 into the fine shaft 18 passes through the slit 15a1 (shown in FIGS. 3 and 6) of the friction roll 15 and is discharged out of the wire mesh together with the reed. Further, the upper end portion of the upper main shaft 19 is located above the upper surface of the upper bearing case 22, and the lower end portion is fed from a lateral feed mechanism portion 24 disposed behind the upper bearing case 22. In order to let the rice grains as raw materials flow downward downward, as shown in FIG. 4, the vertical inner pipe from the bent part of the L-shaped inner pipe 25 formed in the upper bearing case 22. It protrudes downward along 25A, and reaches a height position substantially the same as the bottom of the sideways internal conduit 25B.
As shown in FIG. 3, the lateral feed mechanism unit 24 conveys the rice grains charged from above (the loading port 11) sideways by the rotational drive of the horizontal screw conveyor 27 using the electric motor 26 as a drive source. It is configured as follows.

  Furthermore, at the lower end of the upper main shaft 19, as shown in FIG. 3, the upper end portion of the fine shaft 18, that is, the hollow shaft fine screw top 16 positioned at the upper end portion of the fine shaft 18, The inner pipe 25 is detachably fitted with a set distance L1 between the step 19a formed on the upper main shaft 19 so as to be substantially flush with the bent portion of the inner conduit 25, and can be slid upward. is doing. Further, as shown in FIG. 4, a key 19 b that protrudes a set distance toward the outer peripheral surface side, that is, the fine screw upper 16 side, is bolted to the lower portion of the upper main shaft 19 with the bolt head embedded therein. Has been. When the upper main shaft 19 and the fine screw top 16 are fitted, the key 19b is recessed in the shaft of the fine screw upper 16 and is directed in the axial direction as shown in FIG. It is located in the keyway 16a that extends. A guide is provided when the fine screw top 16 is fitted to the upper main shaft 19 or slidably moved in the vertical direction, and the rotation of the lower main shaft 20 is transmitted to the upper main shaft 19. is doing.

  On the other hand, as shown in FIGS. 3 and 5, the lower main shaft 20 penetrates the lower bearing case 28 disposed on the lower side of the sperm chamber 12 in the up and down direction, and the lower main shaft 20 is in a lower and lower two-stage lower state. The bearings 29 and 29 are rotatably supported. The lower main shaft 20 is a hollow shaft for the same purpose as the upper main shaft 19, and its upper end protrudes by a preset distance L2 inside the semen chamber 12, and the lower end of the semen shaft 18, that is, the sperm shaft A hollow shaft friction roll 15 located at the lower end of 18 is detachably fitted. Further, as shown in FIG. 5, a screw hole 20 a into which a fixing bolt 30 (shown in FIG. 3) for fixing the friction roll 15 and the lower main shaft 20 is screwed to the upper end portion of the lower main shaft 20. Are provided integrally.

  Further, as shown in FIGS. 3 and 5, the lower main shaft 20 below the friction roll 15 is disposed so as to be movable up and down along the lower main shaft 20. An umbrella-shaped resistance portion 32 is provided for adjusting the heel accuracy by pressure (fully closed) to pressure reduction (open). The resistance unit 32 includes a resistance upper limit switch 33 and a resistance lower limit switch 34 (illustrated in FIG. 2) for preventing overpressurization and overpressure reduction.

A driven pulley 35 is attached to the lower end portion of the lower main shaft 20 penetrating the lower bearing case 28. As shown in FIG. 2, the driven pulley 35 is connected to a drive pulley 38 that is attached to a rotary drive shaft 37 of a main motor 36 as a main body power source arranged in parallel with the sperm chamber 12. A power transmission belt 39 is wound therebetween, and the lower main shaft 20 is rotationally driven by the main motor 36.
It should be noted that the culling accuracy adjustment and the activation of the main motor 36 are performed by operating an operation unit 40 provided in front of the rice milling machine 10.

  Next, the fine axis 18 will be described. 3 and 6, as shown in FIGS. 3 and 6, the upper and lower shaft ends are pivotally supported by the upper main shaft 19 and the lower main shaft 20, and the fine shaft 18 can be separated in the axial direction. At least in a state where the friction roll 15 is separated, the friction roll 15, the grinding roll 14, the fine screw upper 16, and the fine screw lower 17 are configured to be removable from between the upper main shaft 19 and the lower main shaft 20.

  The fine screw top 16 disposed at the upper end of the fine shaft 18 is rotated in the internal pipe 25 of the upper bearing case 22 during fine adjustment. As shown in FIG. A spiral screw conveyor 16b is integrally provided for feeding the rice grains that have been naturally flowed down after being fed from the feed mechanism 24 toward the lower side while being aligned with the outer peripheral surface side of the milled upper screw 16. Further, the fine screw upper 16 is a hollow shaft, and an upper support shaft 19 is formed at the upper portion, and a concave portion 16c is formed integrally at the lower portion for removably fitting the grinding roll 14. Further, a bolt shaft portion of a fixing bolt (not shown) for fixing the fine screw 16 and the grinding roll 14 is inserted into the lower portion of the fine screw upper 16 and a counterbore process is performed so that the bolt head does not protrude. An insertion hole 16d provided with is provided.

  In addition to the fine screw upper 16, the grinding roll 14, fine screw 17 and friction roll 18 are also hollow shafts, and the grinding roll 14, fine screw lower 17 and friction roll 15 are present during fine adjustment. Is configured to rotate within a sperm chamber 12 in which a wire net is stretched around in a cylindrical shape. By the way, one side of the sperm chamber 12 can be opened in a double-speech manner so as to communicate with the sperm chamber 12.

  As shown in FIG. 6, the grinding roll 14 is sandwiched between the upper and lower scouring screws 16 and 17 at the center of the grinding roll 14, and abrasive particles that grind the rice grains with the scouring chamber 12 (for example, A grinding part 14a to which diamond, gold sand and the like are fixed. On the upper part of the grinding part 14a, a projecting part 14b is formed integrally with the grinding part 14a so as to have a reduced diameter, and is detachably fitted into the shaft inside the fine screw upper part 16 (the concave part 16c). At the same time, the projecting portion 14b is provided with a screw hole 14c into which a fixing bolt (not shown) for fixing the grinding roll 14 and the fine screw top 16 is screwed. In addition, a protruding portion 14d is formed integrally with the lower portion of the grinding portion 14a so as to have a diameter smaller than that of the grinding portion 14a and detachably fit inside the shaft of the fine screw lower portion 17 (a concave portion 17b described later). In addition, the projecting portion 14d is provided with a screw hole 14e into which a fixing bolt (not shown) for fixing the grinding roll 14 and the lower precision screw 17 is screwed.

  As shown in FIG. 6, the milling screw lower portion 17 includes a spiral screw conveyor portion 17 a for feeding rice grains ground by the grinding roll 14 toward the lower friction roll 15 along the outer peripheral surface side. Integrated. This fine screw bottom 17 is a hollow shaft, and a concave portion 17b is formed on the upper portion for fitting the protruding portion 14b of the grinding roll 14, and a fixing (not shown) for fixing the grinding roll 14 and the fine screw lower 17 is fixed. An insertion hole 17c is provided in which a bolt shaft portion of the bolt is inserted and a counterbore process is performed so that the bolt shaft portion does not protrude. Further, the lower portion protrudes by a preset distance L3 (however, L1-L3> L2) downward in order to detachably fit inside the shaft of the friction roll 15 (a concave portion 15c described later). The protruding portion 17d is integrally formed. Further, the protruding portion 17d is provided with a screw hole 17e into which a fixing bolt 41 (shown in FIG. 3) for fixing the fine screw bottom 17 and the friction roll 15 is screwed.

  As shown in FIG. 6, the friction roll 15 has two U-shaped protrusions that protrude in a U-shape in a plan view in order to rub rice grains with the milling chamber 12 on the outer peripheral surface thereof and extend in the axial direction. The friction protrusions 15a and 15b are integrally provided, and a slit 15a1 is formed in the vicinity of the base end of the friction protrusion 15a. In addition, the friction roll 15 is a hollow shaft, and a concave portion 15c that is recessed by a set distance L3 is integrally formed on the upper portion so that the protruding portion 17d of the fine screw 17 is detachably fitted. A bolt hole 15d is provided in which a bolt shaft portion of a fixing bolt 41 for fixing the lower precision screw 17 and the friction roll 15 is inserted and subjected to counterboring so that the bolt shaft portion does not protrude. . In addition, a concave portion 15e is formed in the lower portion of the friction roll 15 so that the lower main shaft 20 is detachably fitted. The concave portion 15e is formed at a set distance L2, and a fixing for fixing the friction roll 15 and the lower main shaft 20 is fixed. A bolt hole 15f is provided in which a bolt shaft portion of the working bolt 30 is inserted and a counterbore process is performed so that the bolt shaft portion does not protrude.

  When milling is performed in the rice milling machine 10 configured as described above, when the operation unit 40 is appropriately operated and rice grains are introduced from the insertion port 11, the rotating grinding roll 14 and the friction when passing through the milling chamber 12. Grinding and rubbing by the roll 15 completes the finening at once. Then, the milled rice corresponding to the desired culling accuracy is discharged from the discharge port 13. The rice cake removed from the rice grains in the rice milling chamber 12 and adhering to the wire mesh is sucked by a rice cake fan (not shown) and then discharged from a discharge duct 42 provided on one side of the rice milling machine 10 and then to a rice collector (not shown). Accumulated.

  Further, when exchanging or disassembling and cleaning the fine shaft 18, that is, the grinding roll 14, the friction roll 15 and the fine screw upper 16, and the fine screw lower 17, which are connected to one axis, first, the front side leading to the fine chamber 12, Alternatively, the maintenance hatch is opened on the side surface side, and further, as shown in FIG. When it becomes possible to access the inside of the squeezing chamber 12, the fixing bolt 30 that fixes the friction roll 15 and the lower main shaft 20 is removed, and the fixing bolt that fixes the lower scouring screw 17 and the friction roll 15 is removed. 41 is removed.

When the fixing bolts 30 and 41 are removed, as shown in FIG. 7B, until the grinding roll 14, the fine screw upper 16, and the fine screw lower 17 in the connected state come into contact with the step portion 19 a of the upper main shaft 19. The friction roll 15 is separated from the fine shaft 18 by sliding and moving upward by a set distance L1. Then, a distance L1-L3 is provided between the grinding roll 14 moved upward, the finer screw upper 16, the finer screw lower 17 and the friction roll 15.
The separation distance of L1-L3 is set in advance so that the respective set distances satisfy L1-L3> L2. Therefore, the friction roll 15 is equal to or more than the set distance L2 necessary for releasing the fitting with the lower main shaft 20. Can be slid upward. In accordance with this, when the friction roll 15 is slid upward and released from the lower main shaft 20, the friction roll 15 is projected into the protrusion 17d of the lower precision screw 17 as shown in FIG. 7C. Without interfering with the upper main shaft 19 and the upper main shaft 20. When the friction roll 15 is removed, as shown in FIG. 7 (d), the grinding roll 14, the fine screw upper 16, and the fine screw lower 17 in the connected state are moved from between the upper spindle 19 and the lower spindle 20. Remove.

  As described above, according to the rice milling machine of the present invention, the grinding roll 14, the friction roll 15, and the milling screw top 16 arranged in a single shaft between the upper spindle 19 and the lower spindle 20 of the rice mill 10, The lower elbow screw 17 is separable toward the axial direction. Accordingly, the grinding roll 14, the friction roll 15, the fine screw upper 16, and the fine screw lower 17 connected to one axis are rotated by the upper main shaft 19 and the lower main shaft 20 without the rotation driving main shaft penetrating therethrough. Grinding and finening by friction are performed, and when at least the friction roll 15 is separated from the fine spindle 18 in the axial direction, grinding between the upper spindle 19 and the lower spindle 20 is continued to the friction roll 15 and then to one axis. Since the roll 14, the fine screw upper 16 and the fine screw lower 17 can be removed, the upper spindle 19 and the lower main spindle 20 are disassembled when the grinding roll 14, the friction roll 15, the fine screw upper 16, and the fine screw lower 17 are disassembled. There is no need. Therefore, it is possible to provide the rice mill 10 capable of shortening and facilitating the disassembling work of the grinding roll 14, the friction roll 15, the milling screw upper 16, and the milling screw lower 17.

  Further, according to the present invention, the grinding roll 14, the friction roll 15, the fine screw upper 16 and the fine screw lower 17 are respectively formed as a concave portion 16c and a protruding portion 14b, a concave portion 17b and a protruding portion 14d, and a concave portion 15c. The protrusions 17d are detachably coupled. As a result, even if the grinding roll 14, the friction roll 15, the fine screw upper 16 and the fine screw lower 17 connected to one axis are separable in the axial direction, the number of parts and the number of parts manufacturing processes increase. There is nothing.

  The present invention is not limited to one that is applied to a vertical type one-pass rice milling machine that completes milling by friction and grinding by passing rice grains once through the milling chamber from the top to the bottom, A vertical one-pass rice mill that completes grinding and friction milling by passing rice grains once through the milling chamber from the bottom to the top, or passes rice grains once through the milling chamber in the front-rear or left-right direction. Apply to all rice mills that rotate the grinding / friction roll and milling screw connected to one axis to mill the raw material in the milling chamber, such as a horizontal one-pass rice milling machine that completes grinding and friction milling simply Can do.

It is the perspective view which showed the external appearance of the rice milling machine to which this invention was applied. It is the schematic diagram which showed the internal structure of the rice milling machine in the example. It is a sectional side view of the principal part in the example. It is a side view of the upper principal axis in the same example. It is a side view of the lower main axis in the example. It is a schematic diagram of a grinding roll, a friction roll, and a fine screw connected to one axis in the same example. It is the schematic diagram which showed the procedure which removes a friction roll, a grinding roll, and a fine screw from between the upper main shaft and the lower main shaft in the example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Rice mill 12 Milling chamber 14 Grinding roll 14b Protrusion part 14d Protrusion part 15 Friction roll 15c Concave part 15e Concave part 16 On the milling screw
16c Concave portion 17 Underneath the fine screw (the fine screw)
17b Recessed portion 17d Protruding portion 19 Upper spindle 20 Lower spindle

Claims (2)

In a milling machine that performs milling by rotating a grinding roll, friction roll and milling screw connected to one axis in the milling room,
In the rice mill, the shaft end of the grinding roll, the friction roll, and the milling screw connected to the single shaft is detachably coupled, and the grinding roll, the friction roll, and the milling screw connected to the single shaft are rotatable. A grinding roll, a friction roll, and a fine screw, which are provided with a pair of upper and lower spindles to be supported, are separated in the axial direction while being supported by the upper spindle and the lower spindle. In the state where at least the friction roll is separated from the grinding roll, the friction roll and the fine screw connected to the single shaft, the friction roll, the grinding roll and the fine roll are provided between the upper main shaft and the lower main shaft. A rice mill characterized by the ability to remove the screw.   2. The grinding roll, the friction roll, and the fine screw are integrally formed with at least one of a recess or a protrusion for detachably connecting to each other in the axial direction. The described rice milling machine.

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