JPH0357819B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a ventilation bran removal device for a grain milling machine.

In general, in the milling operation of a grain milling machine with a milling trochanter mounted on the rotating horizontal shaft, in the lower half of the milling chamber, the weight of the grains prevents upstream guidance and the grains accumulate significantly, causing the grains to become grainy. Due to the drastic increase in density and overpressure, the rotation speed of the grains is drastically reduced and the grain surface is roughened, and there are defects such as reduced aeration and bran removal ability and generation of crushed grains. In the upper half of the whitening chamber,
The grains were accelerated by their own weight and rapidly increased their revolution speed, which caused the grain density to become diluted and the impact to increase, inducing grain fragmentation. is a per unit area of the porous-walled polishing tube, in which the wind flowing in from the bottom porous wall of the porous-walled polishing tube for rice bran removal installed on the outer periphery of the whitening chamber is circulated into the whitening chamber and discharged from the top porous wall. The above-mentioned drawbacks of the conventional device have been solved by making the ventilation resistance of the bottom porous wall larger than that of the top porous wall. In addition to activating the whitening and bran removal functions by improving the process, it is also possible to reliably separate and collect the rice bran powder and fine grains, etc., thereby ensuring high-efficiency whitening and bran removal effects at all times. The purpose of the present invention is to develop and provide a high-performance grain milling ventilation and bran removal device that achieves mass production of high-quality polished rice.

The present invention will be explained with reference to embodiment figures. Inside the box-shaped machine frame 1, a porous wall polishing cylinder 2 for removing rice bran is horizontally suspended, and a rotating horizontal shaft 3 is inserted into the inside, and a polishing trochanter 4 and a spiral trochanter 5 are respectively mounted on the horizontal shaft 3. A milling chamber 6 is formed around the outer periphery of the milling chamber 6, and a supply hopper 7 is provided on the rice feeding side of the milling chamber 6, and a rice discharging port 9 with a resistive lid device 8 is provided on the rice discharging side. A rice bran removal chamber 10 is provided on the upper outer periphery of the polishing tube 2 and connected to an exhaust fan 11 through a wind pipe 12, and both lower walls of the porous-walled polishing tube 2 are connected to ventilation blocking support walls 13, 13. As a result, both supporting walls 13 and 1
A plurality of stages of fine grain collecting cylinders 14A and 14B are connected below the grain collecting cylinder 14B, and a ventilation window 16 is provided on the side wall surface of the machine body or the side circumferential wall 15 provided on the outside of the grain collecting cylinder 14B. This grain milling machine is integrally formed with a ventilation window 18 provided on the side wall surface of the machine body or the side wall lid 17 provided on the outside of the upper part of the above-mentioned blocking support wall supporting the cylinder 2. The porous wall polishing cylinder 2 for removing rice bran is composed of a top porous wall section 21 and a bottom porous wall section 22, which are made up of a pair of circular arc-shaped porous walls 19 and 20. The arc-shaped porous walls 19, 20 of the upper surface porous wall portion 21 are mounted on and fixed to the support walls 13, 13 in the upper surface.
are arranged in a fitting manner and are integrally connected by a connecting fitting 23, and the wind flowing in from the bottom porous wall 21 is circulated into the whitening chamber 6 and discharged from the top porous wall 21. The ventilation resistance per unit area of the porous-wall polished cylinder 2 is made larger in the lower porous wall portion 22 than in the upper porous wall portion 21.

With the above configuration, the grains (brown rice) fed into the supply hopper 7 flow down to the milling chamber 6 and are milled by the rotation of the milling trochanter 4, and the bran produced by the milling action is The wind flowing in from the air supply window 16 due to the suction force of the exhaust fan 11 flows into the fine grain collection tube 14B.
The milled rice flows into the milling chamber 8 by bypassing the rice bran powder, is absorbed into the bran removal chamber 10 and is discharged outside the machine, and the milled polished rice flows out from the rice discharge port 9 and is taken out of the machine. Ru. In the porous wall whitening chamber 2 for rice bran removal, the ventilation resistance per unit area of the bottom porous wall 22 is made larger than that of the top porous wall 21, so that the air flowing from the bottom porous wall 22 is The wind speed is increased and flows into the milling chamber 6, and the increased wind force floats the grains concentrated in the lower half of the milling chamber 6, reducing the grain density and promoting the rotation of the grains. ,
Rough cutting of the grain surface that occurs in the lower half of the whitening room 8 mentioned above,
In addition to preventing the generation of crushed grains due to overpressure, the ventilation force is increased to activate the bran removal effect, and the whitening room 6
In the upper half, the increase in the wind force promotes the upstream guidance of the grains, corrects the grain density appropriately, prevents the generation of crushed grains due to the dilution of the grain density mentioned above, and completely removes the whole part of the porous wall polishing tube 2. High-efficiency whitening action is carried out in the surrounding area. During this polishing action, crushed grains generated in the rice bran chamber 6 or fine grains mixed into the polished rice flow out from the holes in the bottom porous wall 22 of the polishing tube 2 and pass through the fine grain collecting tubes 14A, 14B. However, in this device, since the air supply window 16 is provided in a position where it is shielded by the fine grain collecting cylinder 14B, the collected grains are Grain cylinder 1
Fine particles flowing down inside 4A and 14B are removed from the air supply window 1.
The whole grains can be reliably stored in the fine grain receiving box 24 without scattering from the grains 6 to the outside of the machine and being discharged. In addition, in this device, since a ventilation window 18 is opened in the side wall cover 17 provided on the outside of the support wall 13 that supports the polishing cylinder 2, the support wall 13 with no air permeability is
The bran powder that falls under its own weight on the surface and tries to accumulate is sucked into the upper bran removal chamber 10 along with the wind flowing in from the ventilation window 18, so that the porous wall surface of the polishing tube is not clogged due to the accumulation of bran powder. , it is possible to always ensure efficient bran removal action.

Claim 2 provides that the ventilation window 1
8 is provided so that the ventilation volume can be adjusted freely.
(See figure) The movable window frame 26 placed in front of the fixed window frame 25 provided on the ventilation window 18 can be moved by the adjustment fitting 27 to change its opening degree, so it can be adjusted according to the amount of bran powder generated. The ventilation amount can be adjusted very easily, and the suction bran removal effect on the surface of the polished cylinder can be stabilized at high efficiency at all times.

According to the third aspect of the present invention, the fine grain collecting cylinders 14A, 14B are provided with a bran inlet 28 for air conveyance connected to the exhaust fan 11 below the discharge port, so that the fine grain collecting cylinders 14A, 14B are provided with a bran inlet 28 for air conveyance that communicates with the exhaust fan 11. The fine bran mixed with the fine grains flowing down the grain cylinders 14A, 14B is collected from the bran flour socket 28 while flowing down inside the side peripheral wall 15, and becomes a bran-containing wind together with the wind flowing from the feeder cylinder 30. Since the grains are removed by the exhaust fan 11 through the exhaust pipe 29, it is possible to completely remove fine bran and the like and to secure only carefully selected fine grains.

According to the fourth aspect of the present invention, since the fine grain collecting cylinders 14A and 14B are provided with a fine grain receiving box 24 which can be moved in and out below the discharge port, the The receiving box 24 can be easily taken out and the work of collecting fine particles can be easily carried out.

In this way, the ventilation and bran removal device for a grain milling machine of the present invention has the following features:
The simple structure streamlines the ventilation and bran removal function in the polishing room, and prevents the polishing cylinder from being clogged with bran powder, so each function of polishing and bran removal can be activated, and the bran powder and fine particles can be removed. It is possible to reliably separate and collect the rice, etc., and it is possible to perform high-efficiency milling and bran removal at all times and achieve mass production of high-quality polished rice.

[Brief explanation of drawings]

The drawings are illustrations of embodiments of the present invention. FIG. 1 is a partially cutaway side view of the device, FIG. 2 is a partially cutaway front view of the device, and FIG. 3 is a perspective view of the ventilation window. 1...Box-shaped machine body, 2...Porous wall polishing cylinder for removing rice bran,
3... Rotating horizontal axis, 4... Refining trochanter, 5... Spiral trochanter, 6... Refining room, 7... Supply hopper, 8...
Resistance lid device, 9... rice discharge port, 10... bran removal chamber, 1
1... Exhaust fan, 12... Wind pipe, 13... Ventilation blocking support wall, 14A, 14B... Fine grain collector, 15...
... Side peripheral wall, 16 ... Air supply window, 17 ... Side wall cover, 18 ... Ventilation window, 19 ... Arc-shaped porous wall, 2
0...Circular porous wall, 21...Top porous wall part, 2
2...Bottom porous wall part, 23...Connection fittings, 24...
... Receiving box for fine grains, 25... Fixed window frame, 26... Moving window frame, 27... Adjustment fittings, 28... Bran powder socket for air conveyance, 29... Exhaust pipe, 30... ...Charge cylinder, 31...opening.

Claims (1)

[Scope of Claims] 1. A whitening chamber is formed by mounting a whitening trochanter on a rotating horizontal shaft installed inside a porous-wall whitening cylinder for rice bran removal, and both lower walls of the porous-wall whitening cylinder are formed. In a grain milling machine that is mounted on a support wall for blocking ventilation, the wind flowing in from the bottom porous wall of the milling barrel is passed through the milling chamber and discharged from the top porous wall, and A ventilation window is provided on the side wall surface of the fuselage or the side circumferential wall provided on the outside of the communicating fine grain rice bran collecting tube, and a ventilation window is provided on the outer side of the upper part of the support wall that supports the porous wall polishing tube. A ventilation bran removal device for a grain milling machine characterized by having a ventilation window provided in the lid body. 2. The ventilation bran removal device for a grain milling machine according to claim 1, wherein the ventilation window is provided so that the amount of ventilation can be freely adjusted. 3. The ventilation ventilation of the grain milling machine according to claim 1 or 2, wherein the fine grain collection barrel is provided with a bran inlet for air conveyance that communicates with an exhaust fan below the discharge port thereof. Bran device. 4. Claim 1, wherein the fine grain collection cylinder is provided with a fine grain receiving box below its discharge port so as to be freely accessible.
2. A ventilation bran removal device for a grain milling machine according to item 2 or 3.