JPH0113553Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of the grain feeding roll of a rice milling machine.

Prior Art In conventional rice milling machines, the outer periphery of the spiral ridge of the grain feeding roll is close to a perfect circle and has no protrusions.

Problems that the invention aims to solve Recently, rice milling machines that directly mill rice from paddy have become popular, but some of the harvested paddy that has been threshed and dried contains soft "straw" like leaves and "stick-shaped" rice. There are many paddy grains that are heavily contaminated with "hard straw" or, depending on the variety, have a lot of stubble and are very difficult to shed.

In conventional rice milling machines, especially single-pass rice milling machines, in the orthogonal section A in FIG. If the paddy has a lot of scraps or stubble, it will be difficult to change the course toward the exit of the milling room 4, and especially if the paddy is hard and stick-shaped, the outer periphery of the grain feeding roll 1 will be a perfect circle. Therefore, the paddy cannot change its course as it remains caught between the surrounding semicircular wall and the outer periphery of the grain feed roll, and it ends up stuck against the wall of orthogonal section A, as shown in Fig. 1, 16b. This will cause the grain to accumulate and prevent the grain from changing its course.

Therefore, the flow of paddy in the horizontal direction inside the milling chamber 4 becomes irregular and uneven, and the pressure inside the milling chamber 4, which always requires uniform milling pressure, also becomes unstable, causing unfinished rice to be mixed in the finished polished rice. It was impossible to mill the paddy in one go because the milled paddy got mixed in or the flow of the paddy stopped and the milling became impossible.

Therefore, when directly milling the paddy, the first time is about 5 minutes of pounding, and even if unmilled paddy is mixed in, the paddy is allowed to pass through the milling chamber 4, and "straw garbage" and "sedge" are removed.
We have been milling the rice twice, which involves loosening it to a certain extent and then milling it a second time to make it into white rice.

The purpose of this invention is to improve the grain feeding roll so that even paddy raw material with a lot of "straw waste" or "sludge" can be milled in one go.

Means for Solving the Problems In this invention, a protrusion is provided along the outer periphery of the helical ridge of the grain feeding roll at the orthogonal part between the falling gutter and the milling room.

Function: By configuring this device as described above, "straw waste" or "sedges", especially "rod-shaped hard straw", which fall into the milling room through the falling gutter, are rotated by the grain feeding rolls by the projections. Since the grains are caught in the grain direction, they do not stay stuck in the wall of the orthogonal section A, but are included in the flow of grains and sent into the milling chamber while changing their direction.

Embodiment An embodiment of this invention will be described with reference to the attached drawings. As shown in FIGS. 1 and 2, grain feeding roll 1 is located in the orthogonal section A between drop gutter 8 of the circulation path of the rice milling machine and milling room 4. Projections 2a and 2b are provided at appropriate positions along the outer periphery 3 of the spiral ridge.

Figure 3 shows the present invention applied to a one-time rice milling machine, which includes a grain feeding roll 1, a milling roll 5, a milling wire mesh 6, a raw material tank 7 for charging and storing raw material grains, and Grain falling gutter 8, raw material tank 7
A shutter 9 that controls the amount of grain falling from the grain to the gutter; a resistance plate 10 that is installed at the outlet of the milling chamber 4 and adjusts the milling pressure in the milling chamber 4 via a resistance handle 11 and a spring 12; The blower 13 that suctions the rice hulls and bran, the motor 14 that drives the whitening roll 5, etc. are completely the same as those of the conventional rice milling machine.

With the above configuration, as shown in Figures 1 and 2, when milling paddy, the "straw waste" that falls from the raw material tank 7 to the grain feeding roll 1 through the drop gutter 8, especially "Stick-shaped hard straw" 16
Due to the action of the protrusions 2a and 2b, b does not stay in the state 16b stuck to the wall of the milling room at the orthogonal part A, but is rolled up in the rotational direction of the grain feed roll 1, and while changing its direction, moves in the direction of the milling roll 5. sent to.

Therefore, the flow of the chaff 15 does not lose its smoothness and the milling pressure in the milling chamber 4 becomes constant, so that there is no mixing of unhulled chaff, etc., and it becomes possible to mill the chaff once.

With this grain feeding roll 1, even when milling brown rice, the protrusions 2a and 2b do not pose a problem in grain feeding, and a good grain feeding condition can be obtained.

Also, the above embodiment was explained using a one-time rice polishing machine, but
Even if it is applied to the grain feed roll of a circulating rice mill, the same effect can be obtained.

Effects of the device As mentioned above, this device provides a protrusion on the outer periphery of the spiral ridge of the grain feeding roll, so that the straw and stubble mixed in with the paddy are retained in the orthogonal part by the protrusion. Instead, it is rolled up in the rotating direction of the grain feed roll and smoothly transferred toward the milling roll while changing its direction, so the milling pressure is always constant.
Therefore, one-time polishing of paddy hulls is possible. Another feature of the present invention is that the protrusion can be implemented relatively easily and at low cost.

[Brief explanation of the drawing]

Figure 1 is a front view of a part of the grain feeding roll of the present invention installed in a rice milling machine, Figure 2 is a sectional view taken along the - line, and Figure 3 is a single-pass rice mill using the present invention. FIG. 1...Grain feeding roll, 2a, 2b...Protrusion, 3
...The outer circumference of Spiral Mountain.

Claims (1)

[Scope of utility model registration request] A grain feeding roll for a rice milling machine, characterized in that a protrusion is provided on the outer periphery of a spiral ridge of the grain feeding roll.