JPH07106323B2 - Vertical type friction cutting type grain mill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a vertical-type friction-cutting type grain milling machine.

[Conventional technology]

A conventional vertical shaft type friction milling machine will be described with reference to FIGS. 5 and 6. Reference numeral 40 is a vertical type friction cutting type grain refiner,
A spiral rotator 43 is rotatably provided in the standing porous wall bran-removing white tube 41, a spiral trochanter 43 is provided below the main shaft 42 having a ventilation port 52, and a friction grain trochanter 45 is provided with an agitation protrusion 44 at the upper portion. Axle.
The grains are supplied to the spiral rotator 43 from the grain supply part 48 provided on one side wall of the machine frame 47 through the grain feeding trough 46, and the spiral rotator 43 sends the grains to the grain refinement chamber 49. In the milling chamber 49, the milling action is generated by the rotation of the friction grain milling trochanter 45, and the milling is performed.
The refined grain is discharged from the discharge port 50 through the discharge gutter 51 to the outside of the machine.

However, in the conventional vertical friction cutting type grain refiner as described above, as shown in FIG.
Since the number (44) in the circumferential direction of 44 is formed to be a non-divisor of the number of angles (hexagon) of the white-walled multi-walled braided wall 41, the stirring protrusions 44a,
44c is located at the corners 41a and 41d of the porous wall debranifying whitening cylinder 41,
The other stirring protrusions 44b and 44d are 41e and 41f of 41b and 41c, respectively.
Located in the middle of. Therefore, there are problems that the pressure in the grain refining chamber 49 becomes unbalanced and uneven smashing occurs, the porous wall debranching whitening cylinder 41 is damaged early, and abnormal vibration and abnormal noise occur.

Further, since the difference between the distance l 2 at which the gap between the stirring projections 44 and the porous wall debranching whitening cylinder 41 becomes the widest and the distance l 1 at which the gap becomes the narrowest is too large, a partial pressure is locally applied to the grain. There was a problem that crushed particles were generated.

[Problems to be solved by the invention]

The present invention solves the above problems, and appropriately configures the relationship between the stirring projections of the friction grain trochanter and the porous wall bran removal whitening cylinder to prevent the occurrence of uneven milling and crushed grains. An object of the present invention is to provide a friction-cutting type grain refiner.

[Means for solving problems]

In order to achieve this object, the present invention has the following configuration.

A vertical axis is provided with a spiral trochanter and a friction grain trowel having a stirring projection and a blowhole on a main shaft rotatably provided in a standing multi-walled bran-removing braided tube. One end of a grain mill having a grain trochanter as a main part is connected to a grain supply part and the other end is connected to a grain discharge part to form a vertical type friction cutting type grain mill. Then, a friction grain trochanter having a diameter of 200 mm or more and three or more stirring projections is used, and the number of corners of the porous wall bran-removing white tube is set to an integral multiple of the number in the circumferential direction of the stirring projections, In order to make the narrowest gap with the porous wall debranifying whitening tube 7 to 9 mm and the widest gap to be 7 to 13 mm larger than the narrowest gap, each corner of the porous wall debranching whitening tube is curved. Form.

[Work]

The grain supplied to the spiral trochanter from the grain supply unit of the friction cutting type grain refiner is sent by the spiral trochanter and is a fine grain mainly composed of a perforated-wall debracing white barrel and a friction fine grain trochanter. She is licked in the room. The refined grain is discharged from the grain discharge part and sent to the next step. At that time, the density of the grains is balanced in the whitening chamber, and the smooth whitening action is performed by the appropriate stirring and activity action at the corners of the porous wall bran removal mill and the grain friction at the non-corner portions.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. First
The figure is a side cross-sectional view of the vertical axis friction-cutting type grain mill, Fig. 2 is a partially cutaway side view of the friction grain trochanter, and Fig. 3 is the friction grain trochanter and porous wall bran. FIG. 4 is a transverse cross-sectional view with a white polishing cylinder,
The figure is a partially enlarged view of FIG.

Reference numeral 1 denotes a vertical shaft type friction milling machine, in which a spiral trochanter 4 is provided at the lower part of a main shaft 3 rotatably provided in a standing porous wall bran-removing whitening cylinder 2 and a frictional grain cultivator is provided at the upper part. 5 is mounted respectively. The lower part of the grain refining chamber 6 which has the porous wall debranching whitening barrel 2 and the friction grain trochanter 5 as main parts is connected to the grain supply part 7 and the upper part is connected to the grain discharge part 8, respectively. The motor pulley 10 of the main motor 9 and the pulley 12 provided above the intermediate shaft 11 are connected to the V belt.
The pulley 14 provided at the bottom of the intermediate shaft 11 is connected to the pulley 17 of the main shaft 3 by the V belt 16 via the tension pulley 15.

The grain discharge unit 8 is provided with a resistance plate 19 connected to an automatic resistance adjusting device 18 that regulates the grains discharged from the grain discharge unit 8. The resistance plate 19 is connected to the tooth shaft 21 via the lever 20,
Reference numeral 21 is linked to a forward / reverse rotation electric motor 22. When the tooth shaft 21 is horizontally moved by the forward / reverse rotation electric motor 22, the lever 20 is rotated around the resistance plate shaft 23, and the resistance plate 19 is rotated toward and away from the grain discharging unit 8. A drain gutter 24 is provided so as to be connected to the grain discharge part 8, and a discharge gutter 25 is connected to the flow gutter 24.

A supply hopper 26 is connected to a grain supply device 27, and a pulley 30 attached to a conveyor shaft 29 around which a spiral body 28 is wound, and an electric motor
The pulley 32 of 31 is connected by a V-belt 33, and the grain feeding device 27 is connected to the grain feeding unit 7.

A large number of ventilation holes 35 are formed in the main shaft 3, and the main shaft 3 is connected to a blower device 36. Reference numeral 37 is a blast hole provided in the friction grain trochanter 5, and the bran removing chamber 38 communicates with a cyclone (not shown) or the like via a bran removing duct 39.

As shown in FIG. 3, the number of the stirring protrusions 34 of the friction grain trochanter 5 is set to be a divisor (three in this embodiment) of the number of corners (hexagon in this embodiment) of the porous wall bran removal white polishing cylinder 2. To do. Also, stirring protrusion
Set the narrowest gap l 1 between 34 and the porous wall bran removal white tube 2 to 7
The polishing efficiency is highest when the difference (l 2 −l 1) between the narrowest gap l 1 and the widest gap l 2 (see FIG. 4) is 7 to 13 mm (see FIG. 4).

In this embodiment, l 1 is 7 mm, l 2 is 17 mm, and
When the diameter of the friction-polished grain trochanter 5 is set to 300 mm, the curved surface radius R of the corner portion of the porous-wall debracing and polishing white tube 2 is 92.4 mm.

Next, the operation of the above configuration will be described. The grains are sent to the grain supply device 27 of the friction cutting type grain refiner 1 via the supply hopper 26. Main motor 9 for driving main shaft 3 and grain supply device
When the electric motor 31 that drives the 27 is activated, the grain becomes a spiral.
The spiral trochanter 4 supplies the spiral trochanter 4 by 28, and the spiral trochanter 4 pumps it to the grain mill 6.

In the grain refining chamber 6, it undergoes a polishing action caused by the rotation of the friction grain refinement trochanter 5 and is refined. When the stirring protrusion 34A located in the vicinity of the corner 2b of the porous wall bran-removing white barrel 2 is rotated to the next corner 2a, the grain chamber 6 becomes gradually narrower and the grain density becomes larger accordingly. When passing through the gap l 1 part, the most sperm action is activated. Then, the rice grain density decreases as it passes the l 1 part and approaches the next corner 2b, and the corner 2b
In the vicinity, the pressurized state is released all at once and the flow reversal of the grain is promoted. Then, the bran removing effect is performed by the bran removing air blown from the blower 36 through the ventilation port 35 and the blowout port 37. Dust such as bran generated by the polishing action in the grain refining chamber 6 is discharged into the bran removing chamber 38 from the through hole of the porous wall bran removing whitening pipe 2, and the bran duct 39 is used to collect cyclones (not shown) such as cyclones. Sent to the device.

The refined grain reaches the grain discharge part 8, the resistance plate 19 of the automatic resistance adjusting device 18 suppresses the outflow flow rate, and the regulation of the resistance plate 19 is changed to adjust the precision of the grain.
Then, the grain flows out against the resistance plate 19, and is discharged to the outside of the machine through the downflow gutter 24 and the discharge gutter 25.

〔The invention's effect〕

According to the friction cutting type grain refiner in the present invention, the diameter is 200 m.
The number of stirring projections is 3 or more and the number of stirrers is 3 or more, and the number of corners of the porous wall bran removal braided cylinder is an integral multiple of the number in the circumferential direction of the stirrer projections. Each corner of the porous-walled bran-cleaning white tube is formed into a curved surface so that the narrowest gap with the bran-cleaning white tube is 7 to 9 mm and the widest gap is 7 to 13 mm larger than the narrowest clearance. Because it has been configured,
Even if it is formed into a large-diameter friction grain trochanter, the stirring action does not decrease, the pressure balance in the precision angle chamber is balanced, uneven squeaking does not occur, and abnormal vibration, abnormal noise and crushed grains are prevented. It

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a vertical-axis friction-cutting type grain mill according to the present invention, FIG. 2 is a partially cutaway side view of a friction grain mill rotor, and FIG. 3 is a friction grain rotor and porous. Cross-sectional view of the wall with the white rice bran,
FIG. 4 is a partially enlarged view of FIG. 3, and FIGS. 5 and 6 are sectional views showing a conventional example. 1 ... Vertical-type friction-cutting grain milling machine, 2 ... Perforated wall bran milling white cylinder, 3 ... spindle, 4 ... spiral trochanter, 5 ... friction grain trochanter, 6 ... grinding chamber , 7 ... Grain supply unit, 8 ... Grain discharge unit, 9 ... Main electric motor, 10 ... Motor pulley, 11 ...
Intermediate shaft, 12 …… Pulley, 13 …… V belt, 14 …… Pulley, 15 …… Tension pulley, 16 …… V belt, 17
...... Pulley, 18 ...... Automatic resistance adjustment device, 19 ...... Resistance plate, 20 ...... Lever, 21 ...... Tooth axis, 22 ...... Forward / reverse rotation motor, 23 ...... Resistance plate axis, 24 ...... Downflow gutter, 25 …… Discharge gutter, 26
…… Supply hopper, 27 …… Grain feeder, 28 …… Spiral, 29 …… Conveyor shaft, 30 …… Pulley, 31 …… Electric motor, 32 …… Pulley, 33 …… V belt, 34 …… Stirring projection , 35 …… Ventilation port, 36 …… Blower, 37 …… Ventilation port, 38
…… Bran removing chamber, 39 …… Bran removing duct, 40 …… Vertical-type friction-cutting grain milling machine, 41 …… Perforated-wall bran polishing white barrel, 42 …… Spindle, 43…
… Spiral trochanter, 44 …… Stirring protrusion, 45 …… Frictional grain trochanter, 46
…… Grain trough, 47 …… Machine frame, 48 …… Grain supply section, 49 …… Grain chamber, 50 …… Discharge port, 51 …… Discharge gutter, 52 …… Ventilation port, 53
...... Blowout port, 54 ...... Injection port, 55 ...... Outlet port.

Claims (1)

[Claims] 1. A perforated wall removing bran is provided by arranging a spiral rotator and a friction grain trowel having a stirring projection and a blowhole on a main shaft rotatably provided in a polishing white barrel. In the vertical axis type friction cutting type grain mill, one end of the grain mill having a bran refiner and a rubbing grain trochanter as main parts is connected to the grain supply unit, and the other end is connected to the grain discharge unit, respectively. The diameter of the fine grain trochanter is 200 mm or more and the number of stirring projections of the frictional fine grain trochanter in the circumferential direction is 3 or more, and the number of corners of the porous wall bran removal white tube is the number of the stirring projection. In order to make the narrowest gap between the stirring projection and the porous wall debranching whitening cylinder 7 to 9 mm and the widest gap to be 7 to 13 mm larger than the narrowest gap, A vertical-axis-type friction-cutting-type grain milling machine, characterized in that each corner portion of a porous wall debranching whitening cylinder is formed into a curved surface.