JPH1190246A - Grain milling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify assembling work, to reduce parts purchasing cost and to achieve the reduction of production cost. SOLUTION: A milling rotary member R is provided in a bran removing cylinder K having a plurality of grindstone members 17 and a plurality of perforated members 13 alternately arranged thereto along the peripheral direction thereof in a freely rotatable and drivable manner to mill received grain while transferring the same to the gap between the milling rotary member and the bran removing cylinder and a plurality of strip like flat plate members 12 longitudinally provided along the axial direction of the bran removing cylinder are arranged so as to have an interval in the peripheral direction of the bran removing cylinder to be integrally connected to a pair of annular members 51 positioned on both end sides in the axial direction of the bran removing cylinder and the respective grindstone members are connected to the flat plate members by bolts and the respective perforated members are held between the grindstone members and the flat plate members to be together clamped and fixed and the engaging parts engaged with the bolts 53 for connecting the grindstone members and the flat plate members to prescribe attaching positions in the axial direction are formed to the respective perforated members.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a milling rotary body which is rotatably driven in a bran removing cylinder, and transfers a received grain between the milling rotary body and the bran removing cylinder. It is configured to grind, the bran removing cylinder, a plurality of grindstone members for grinding the surface of the grain, and a plurality of porous members for discharging the bran, are arranged alternately along the circumferential direction Each of the grindstone members is bolted to each of a plurality of supports fixed to a base frame, and each of the porous members is sandwiched between each of the grindstone members and the support. The present invention relates to a grain mill configured to be fixed together.

[0002]

2. Description of the Related Art In the above-mentioned milling apparatus, a grindstone member and a porous member are alternately arranged in a circumferential direction to form a bran removing cylinder. By rotating the rotating body, the bran on the grain surface transferred between the milling rotating body and the bran removing cylinder is peeled off by shaving with a grindstone member, and the peeled bran is discharged through the porous member. Things. In the conventional grain mill, as described in, for example, Japanese Patent Application Laid-Open No. 9-108580, each support is constituted by a groove-shaped frame having a U-shaped cross section, and each porous member is removed. Both side edges located in the circumferential direction of the bran cylinder are formed in a series of straight lines along the axial direction of the bran cylinder, and the bran is removed between these groove-shaped frames and the grindstone members mounted in the grooves. By sandwiching the side edges of two porous members that are adjacent to each other in the circumferential direction of the cylinder, the grindstone member and the porous members arranged on both sides of the grindstone member are fastened to the groove frame by bolt connection between the groove frame and the grindstone member. doing. More specifically, a plurality of grooved frames, with the groove side inward, the longitudinal direction along the axial direction of the bran removing cylinder, and arranged at equal intervals in the circumferential direction of the bran removing cylinder, the circumferential direction By connecting both ends of each adjacent grooved frame with a connecting plate inserted between the two ends, and fixing these connecting plates to the base frame by bolts, each grooved frame is connected to the base frame. Fixed against. Then, the linearly formed side edges of the two porous members are positioned on both lateral sides of the connection bolt in the circumferential direction of the bran removing cylinder, that is, the connection bolt is located between the side edges of the two porous members. The side edges are sandwiched between the groove-shaped frame and the grindstone member at regular intervals so as to enter.

[0003]

According to the above prior art, it is necessary to connect both ends of each grooved frame with a connection plate inserted between adjacent grooved frames, In fixing the side edges together with the grooved frame and the grindstone member, there is a disadvantage that the positioning of the porous member is troublesome and the assembling work is complicated. That is, both side edges of each porous member located in the circumferential direction of the bran removing cylinder are formed in a series of straight lines along the axial direction of the bran removing tube, and are connected between the side edges of two adjacent porous members. Since the side edges are sandwiched between the groove frame and the grindstone member so that the bolts enter, the relative positions of the two adjacent porous members and the groove frame are different. This is because it is easy to shift in the axial direction of the bran removing cylinder. In addition, since a frame having a special shape called a groove type frame is provided and the grindstone member and the porous member are fastened and fixed together, there is a disadvantage that the cost of parts procurement is high. The present invention has been made in view of the above circumstances, and simplifies the assembling work, and
It is an object of the present invention to reduce the parts procurement cost and reduce the production cost.

[0004]

According to a first aspect of the present invention, there is provided a grain mill comprising a plurality of supports each formed of a belt-like, easily-available plate member having a longitudinal direction extending along the axial direction of the bran removing cylinder. Since the grindstone member and the porous member are fastened and fixed to the member, the procurement cost of the support can be reduced. In addition, these plate members are arranged at appropriate intervals in the circumferential direction, and are integrally connected to a pair of annular members located at both ends in the axial direction of the bran removing cylinder, so that the number of parts can be reduced. Further, the engaging portion for regulating the mounting position formed on each porous member is engaged with the connecting bolt between the grinding wheel member and the flat plate member, and the two adjacent porous members are mounted in the axial direction of the bran removing cylinder. Since the position can be regulated, the assembling work can be simplified. Therefore, the assembling work can be simplified, the parts procurement cost can be reduced, and the manufacturing cost can be reduced. The grain milling device according to claim 2, wherein the radial gap with respect to the milling rotary body is substantially the same as the radial gap between the grinding surface and the milling rotary body, and a discharge action section for bran discharge, and a grinding wheel member and support. Since the porous member is bent and formed so as to form a co-tightening action portion that is fixed between the body and the co-fastening, with the rotation drive of the rotating body for grinding, the kernels and the grinding action surface. It is easy to move in the circumferential direction of the bran removing cylinder between the rotating body for polishing and the rotating section for discharging and the rotating body for grinding. In addition, since each annular member is provided with a locking portion that is provided in a shape along the bent shape of the porous member and that receives and locks the porous member, when assembling the porous member, the engaging portion of the porous member is formed. While being engaged with the connecting bolt, the end of the porous member in the axial direction of the bran removing tube is locked to the locking portion, and the position of the porous member in the axial direction of the bran removing tube is maintained in the positioning state. can do. Therefore, the grains transferred between the milling rotary body and the bran removing tube are easily moved to the grinding action surface and the discharge action section, so that the whole of the received grains can be milled evenly and the porous member can be removed. Since the position of the rice bran in the axial direction can be maintained in the positioned state, the tightening operation with the connecting bolts becomes easy. The grain grinding device according to claim 3, when the upper portion of the grinding wheel member in the grain transfer direction wears,
The frame body can be mounted on the base frame in the inverted position in the axis direction of the bran removing cylinder, and the lower part of the grain transfer direction with less wear of the grindstone member can be positioned on the upper side of the grain transfer direction for polishing. , The grinding wheel members can be used efficiently,

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a grain mill according to the present invention will be described below with reference to the drawings. The milling apparatus is configured to mill rice grains (brown rice), which is an example of grains, and supplies the rice grains to be milled as shown in FIG. The milling section B provided with a milling chamber 3 for milling while transporting the rice grains supplied from the receiving port 1 to the upper outlet 2, flows through the milling chamber 3, and resists the rice grains discharged from the outlet 2. A resistance applying section E, a discharging section D for discharging rice grains milled in the milling section B, a milling room 3
As a main component, a ventilation unit F is provided as ventilation means for ventilating air for discharging bran separated from the rice grains and cooling the rice grains.

The milling section B will be described with reference to FIGS. 1 and 2. In the milling unit B, a rotating body R for milling is rotatably provided in a rice bran cylinder K, and an outer peripheral portion of the rotating body R for milling comes into contact with the surface of rice grains transferred in the rice bran cylinder K. A brush 42 is provided so that the supplied rice grains are polished while being transported between the rotator R for milling and the bran removing tube K.

At the upper end of the cylindrical portion 4a of the base frame 4,
The flanged cylindrical portion 4b is connected, the upper opening of the flanged cylindrical portion 4b is used as the discharge port 2, and the receiving port 1 is formed in the peripheral wall of the cylindrical body 6. A ventilation hole 15 is formed in a fitting portion between the flange of the flanged cylindrical portion 4b and the cylindrical portion 4a so that the bran collecting chamber 7 is open to the outside. A bran discharging chute 4f of the base frame 4 is provided in communication with the lower end of the cylindrical portion 4a.

The bran removing tube K will be described. Inside the cylindrical portion 4a, a cylindrical drum screen 5 and a cylindrical body 6 connected in the up-down direction are arranged coaxially with the cylindrical portion 4a, and a polishing chamber is provided inside the drum screen 5 and the cylindrical body 6. 3 and a bran collecting chamber 7 is formed outside the drum screen 5 and the cylindrical body 6. That is, the drum screen 5 and the cylindrical body 6 constitute the bran removing tube K. The portion of the cylindrical portion 4a facing the drum screen 5 is formed of a transparent member so that the bran collection chamber 7 can be seen through from the outside.

As shown in FIGS. 3 and 4, the drum screen 5 separates a pair of steel annular members 51 located at both ends in the axial direction of the bran removing cylinder from each other in a longitudinal direction as a plurality of supports. Eight strip-shaped steel flat members 12 along the axis of the bran tube
A frame 52 as a frame is formed by concentrically integrally connecting with each other, and alternately arranged along the circumferential direction of the bran removing cylinder, eight rectangular parallelepiped grinding wheels 17 for grinding the surface of rice grains, Eight screen members 13 as a plurality of porous members for discharging bran are fixed to the frame 52.

Each of the flat plate members 12 is arranged at equal intervals in the circumferential direction of the bran removing cylinder, and both ends thereof are fixed to the annular member 51 by welding. The grindstone members 17 are connected by connecting bolts 53, and the respective screen members 13 are sandwiched between the flat plate members 12 and the grindstone members 17, and are fixed to the flat plate members 12 together with the grindstone members 17.

Each of the screen members 13 is shown in FIGS.
As shown in FIG. 7, a discharge action portion 13a having a large number of ventilation holes 54 for discharging the bran separated from the rice grains during the milling to the bran collection chamber 7, and a grinding stone on both sides of the discharge action portion 13a. The joint 17 is bent and formed so as to form a joint fastening portion 13b which is jointly fixed between the member 17 and the flat plate member 12,
A semicircular notch is formed at the side edge of the joint fastening portion 13b, and a bolt 53 for connecting the grindstone member 17 and the flat plate member 12 is formed.
And an engagement portion 55 for regulating the mounting position in the axial direction of the bran removing cylinder is formed. The discharge action portion 13a is bent so that a radial gap with respect to the grinding rotary member R is substantially the same as the grinding action surface 17a of the grindstone member 17.

As shown in FIG. 4, each of the annular members 51 is formed with a large number of projections 51a having a shape following the bent shape of the screen member 13 at equal intervals on the inner peripheral surface side. 51a is configured as a locking portion that receives and locks the screen member 13, and in a state where the engaging portion 55 of the screen member 13 is engaged with the connecting bolt 53, the discharging action portion 13a of the screen member 13 is The end of the bent portion 13c in the axial direction of the bran removing tube between the co-tightening action portion 13b and the axial direction end portion of the bran removing tube is locked to the locking portion 51a, so that the position of the screen member 13 in the axial direction of the bran removing tube can be maintained in a positioning state. It is like that.
Each of the grindstone members 17 has its both ends fixed to these locking portions 5.
It is attached so as to enter between 1a.

Each of the annular members 51 has a frame 52
A fixing portion 56 that can be bolt-fixed to both the cylindrical body 6 and the flanged cylindrical portion 4b that constitute the base frame is provided in an inverted posture in which is inverted in the axial direction of the bran removing cylinder.
The fixing portion 56 has four bolt holes 56a for inserting bolts screwed into the cylindrical body side and four screw holes 56b for screwing bolts inserted into the flanged cylindrical portion side at equal intervals. Are formed alternately.

A description will be given of the rotating body R for polishing.
Using a pair of bearings 9, a cylindrical shaft portion 8 having a large number of ventilation holes 8 a opening from the inside of the tube to the outer peripheral portion is formed using a base frame 4.
The shaft supporting cylindrical portion 4c is rotatably provided around a vertical axis. The cylindrical polishing roll 10 and the cylindrical conveying screw 11 are vertically connected with each other in a state where the inside of the cylinder communicates with each other, and the polishing roll 10 is positioned at the upper part of the bran removing tube K. Conveying screw 11 connected
And the cylindrical shaft portion 8 are connected in a state where the inside of the tube of the conveying screw 11 and the inside of the cylindrical shaft portion 8 communicate with each other, and the milling roll 10, the conveying screw 11 and the cylindrical shaft portion 8 are
It is provided so as to be integrally rotatable around the same axis in the vertical direction.
Then, the milling roll 10, the conveying screw 11, and the cylindrical shaft 8 are rotated around the same axis by the electric motor M2.

[0015] That is, the milling roll 10 and the conveying screw 11 constitute a milling rotary body R, and the milling rotary body R is rotatably provided in the bran removing tube K. Further, a passage formed by connecting the inside of each of the milling roll 10, the conveying screw 11, and the cylindrical shaft portion 8 in series is configured to function as an air passage H. Further, a space is formed between the shaft supporting cylindrical portion 4c and the cylindrical shaft portion 8 so as to be air-tightly partitioned by a pair of bearings 9 so that this space functions as an air reservoir 33 described later. It is composed.

As shown in FIG. 7, the milling roll 10 has a long length in which a brush 42 is planted on the outer peripheral portion of the roll body 16 whose upper end is closed so as to come into contact with the surface of the rice grains transferred in the bran removing tube K. Four of the flocked members 43 are milled on rolls 10
In a state of being arranged at equal intervals in the circumferential direction, the unit is detachably provided with bolts (not shown). When the rotating body R for milling is rotated as shown by the white arrow in FIG. 7, the tip of the brush 42 implanted on the outer periphery is pressed against the surface of the rice grain, and the brushing action removes the bran on the surface of the rice grain. It is configured to grind while polishing.

The flocking member 43 is disposed on the outer peripheral portion of the milling roll 10 with its longitudinal direction parallel to the axis of the milling roll 10 and with its surface protruding from the outer peripheral portion of the milling roll 10. It is provided by fitting into the formed groove. In addition, both ends of the surface of the flocking member 43 in the circumferential direction of the milling roll 10 are in a state of protruding radially outward of the milling roll 10 from other portions when viewed in the axial direction of the milling roll 10. It is formed on the projection 43a. The groove formed in the milling roll 10 is provided with a vent 10a that opens from the inside of the cylinder to the outer periphery.

The flocked member 43 has a recess 43b on the back side.
Are formed, and the brush 42 is positioned at each of the non-flocked portions, and the concave portion 43 is arranged vertically to the surface of the flocked member 43.
A ventilation hole 43c opening from b to the outer peripheral portion is formed. Therefore, when the flocking member 43 is attached to the milling roll 10, the air holes 10 a of the milling roll 10, the concave portions 43 b of the flocking member 43, and the air holes 43 c are connected in series.

The brush 42 has a thickness of about 0.25 mm, and is formed of a material in which 6-10 nylon carries carborundum abrasive grains having a size of 1200 mesh.

Next, the supply section A will be described with reference to FIG. The supply section A includes a rice grain supply path 18 connected to the receiving port 1, a transverse feed screw 19 rotatably supported in the rice grain supply path 18, and an electric motor for rotating the transverse feed screw 19. M1; a hopper 20 communicating with and connected to the rice grain supply passage 18; and a shutter 21 interposed at an outlet of the hopper 20. The electric motor M <b> 1 is configured to rotate at a predetermined constant rotation speed, and to adjust the supply amount of rice grains to the receiving port 1 by adjusting the opening of the shutter 21.

Next, based on FIG. 1 and FIG.
And the resistance applying unit E will be described. The discharge unit D is
Forming a discharge chamber 22 inside the cylindrical part 4d for forming a discharge chamber of the base frame 4 connected to the upper part of the flanged cylindrical part 4b;
Two discharge chutes 23a and 23b communicating with the inside of the discharge chamber 22 are connected to the cylindrical portion 4d.
The discharge chute 23a is provided for discharging the milled rice grains to the outside of the apparatus, and the discharge chute 23b is provided for reducing the milled rice grains to the hopper 20 and performing the milling process again. The discharge destination of the rice grains in the discharge chamber 22 can be switched between the outside of the apparatus and the hopper 20 by sliding and rotating the semi-cylindrical shutter 41 provided at the entrance of the nozzle 23b along the inner surface of the cylindrical portion. It is configured.

The resistance imparting portion E is connected to the support frame guide portion 4e of the base frame 4 connected to the upper portion of the cylindrical portion 4d, in the flow direction of the rice grains flowing from the inside of the milling chamber 3 toward the discharge port 2,
That is, a supporting frame 24 provided to be reciprocally movable in the up and down direction, a resistor 25 provided to be reciprocally movable in the up and down direction with respect to the supporting frame 24, and the resistor 25 are discharged. A spring body 26 is provided to the support frame 24 so as to urge the outlet frame 2 in a direction approaching the outlet 2, that is, downward, and an electric motor M3 for driving the support frame 24 to reciprocate up and down. .

The support frame 24 is formed in a cylindrical shape, and is provided so as to be reciprocally movable up and down with respect to the support frame guide portion 4e with its axis centered vertically. The resistor 25 is provided with a resistor board 25a and a round bar 25b vertically provided on the upper surface of the resistor board 25a.
The round bar 25b is slidably fitted in the support frame 24 in a state where the resistance plate 25a is arranged to face the discharge port 2. The spring body 26 is sandwiched between the resistance board 25a and the support frame 24 in a state of being fitted to the round bar body 25b.

A rack gear 27 is fixed to the outer peripheral surface of the support frame 24, and the rack gear 27 is meshed with a pinion gear 28 fixed to the output shaft of the electric motor M3 for adjusting spring pressure. The support frame 24 is configured to be driven to reciprocate up and down by rotation in the reverse direction. In other words, by adjusting the relative positional relationship between the resistor 25 and the support frame 24 by the operation of the electric motor M3, the length of the spring body 26 is adjusted to adjust the urging force,
It is configured to adjust the degree of milling of rice grains.

Next, the ventilation section F will be described with reference to FIG. The suction port of the suction fan 29 is connected to the bran discharge chute 4f. Further, an air supply passage 30 is connected to the shaft support cylindrical portion 4c, and an outlet of the pressure feeding fan 31 is connected to the air supply passage 30. In the air supply passage 30,
Damper 32 for adjusting the amount of air to be pumped by the pumping fan 31
Is interposed.

Then, the suction fan 29 and the pressure feeding fan 3
1, the suction fan 29 and the pressure-feed fan 31
As shown by solid arrows in FIGS. 1, 2 and 7, the air supplied from the pressure-feed fan 31 is supplied to the air supply passage 30, the air reservoir 33, the ventilation hole 8a, and the ventilation passage. H, the air flows through the air holes 10a and the recesses 43b in order, and squirts from the air holes 43c to the brush 42 in the direction of flocking. Further, the milling chamber 3, the discharge action section 13a in which the air holes 54 are formed, The recovery chamber 7 and the bran discharge chute 4f are successively passed through, and are discharged to the outside from the discharge port of the suction fan 29. In parallel with this, the bran and the brush separated from the rice grains by the milling process in the milling chamber 3 Residues and the like separated by abrasion of 42 are also discharged.

The suction fan 2 is adjusted by adjusting the damper 32.
The air volume sucked at 9 is adjusted so as to be larger than the air volume fed by the pressure feeding fan 31 so that the inside of the milling chamber 3 is maintained at a negative pressure. Since air is also sucked in from the ventilation holes 15 and other gaps, specifically, the amount of air suctioned by the suction fan 29 is set to about 1.3 times the amount of air blown by the pressure feeding fan 31.

[Other Embodiments] In the above-described embodiment, a so-called vertical grain mill is illustrated. However, a so-called horizontal grain mill is provided, which includes a milling rotary body rotatable around a horizontal axis in a bran removing cylinder having a horizontal cylinder axis. May be. 2. In the above embodiment, the eight supports are connected to the pair of annular members to form the frame, but the number of the supports can be variously changed as necessary. 3. The number and shape of the engaging portions that are formed on each porous member and engage with the connection bolts between the grindstone member and the support can be variously changed.For example, a rectangular cutout is formed on the side edge of the porous member. It may be formed to form the engaging portion. 4. The two porous members which are located on both sides of the connecting bolt and are fastened and fixed together are spaced apart in the circumferential direction of the bran removing cylinder in a state where the connecting bolt is engaged with the engaging portion. It may be fastened and fixed. 5. The grains milled by the grain mill according to the present invention may be wheat.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a grain mill.

Fig. 2 Cross-sectional plan view of the milling section

FIG. 3 is a side view of a main part of the bran removing cylinder.

FIG. 4 is a cross-sectional plan view of a main part of the bran removing cylinder.

FIG. 5 is a side view of a porous member.

FIG. 6 is a cross-sectional view of a porous member.

FIG. 7 is a cross-sectional plan view of a main part of the milling section.

FIG. 8 is a longitudinal sectional front view of the resistance applying unit.

[Explanation of symbols]

 K Rotating body for burr removal R Rotating body for polishing 4b Base frame 6 Base frame 12 Support body 13 Porous member 13a Discharge action part 13b Joint fastening action part 17 Grinding stone member 17a Grinding work surface 51 Ring member 51a Locking part 52 Frame body 53 For connection Bolt 55 engaging part

Claims (3)

[Claims] A rotating body for polishing is rotatably driven in a bran removing cylinder, and is configured to grind a received grain while transferring the grain between the rotating body for grinding and the bran removing cylinder. A plurality of grindstone members for grinding the surface of a grain, and a plurality of porous members for discharging bran are alternately arranged along a circumferential direction, and each of the grindstone members Is bolted to each of the plurality of supports fixed to the base frame, and each of the porous members is fixedly fastened by being sandwiched between each of the grindstone members and the support. Wherein the plurality of supports are each formed of a band-shaped flat plate member whose longitudinal direction is along the axial direction of the bran removing cylinder, and are appropriately spaced in the circumferential direction. In a state where it is arranged, the pair of annular members located at both ends in the axial direction of the bran removing cylinder are positioned. A grain that is integrally connected to each of the porous members and that is formed with an engagement portion for regulating a mounting position in the axial direction by engaging a connection bolt between the grindstone member and the support; apparatus. 2. The grinding device according to claim 2, wherein the porous member has a radial gap with respect to the grinding rotary member that is substantially the same as a grinding action surface of the grinding wheel member, and a discharge action portion that discharges bran; The annular member is bent and formed so as to form a joint fastening portion fixed between the body and the joint member. The annular members are provided in a shape along the bent shape of the porous member to receive the porous member. The grain milling device according to claim 1, wherein a locking portion for locking is formed. 3. A frame body formed by integrally connecting each of said annular members and said respective support members is provided detachably with respect to said base frame, and said frame body is provided with said shaft. The grain milling device according to claim 1 or 2, wherein the grain milling device is configured to be attachable to the base frame in an inverted posture inverted in a core direction.