JPS61227849A - Hulling apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is an improvement regarding an apparatus for separating rice into chaff and brown rice by rubbing the rice between opposing elastic rotating bodies having different circumferential speeds.

(Prior Art) The rubber hardness of the elastic rotating body in this type of demolition device currently used is 80°-90°.

The removal rate improves as the rotation ratio of the opposing elastic rotating bodies increases. (See FIG. 4) Furthermore, as the hulling gap between the opposing elastic rotating bodies is narrowed, the dehulling rate improves. However, the gap is 0. When El -0.7 mm or more is opened, the barrel slippage rate remains unchanged, but the barrel removal rate drops rapidly. (See FIG. 6) However, as the rubber hardness and rotation ratio are increased in order to improve the demolition rate, the shell deviation rate increases. (See Figure 5) Brown rice that has shifted in its center, or rice that has shifted in its center, deteriorates during storage.

In recent years, the amount of paddy harvested using combines has increased.

By the way, if you compare the rice straw harvested with a binder-like reaper and dry it in the sun and then thresh it with the paddy harvested with a combine harvester, you will find that the paddy harvested with a combine harvester has a large amount of rice that has shifted. understood.

This is because many of the paddy harvested by combines have twig stalks attached to them.

However, since the twig stalk connects the base of the rice husk that envelops the brown rice, it is difficult to remove the husk.

Therefore, in the past, the rubber hardness and rotation ratio of the elastic rotary body were increased to remove twig-like paddy, which is difficult to remove from the hull, so that the generation of a large amount of rice that was out of place was unavoidable.

(Problems to be Solved by the Invention) The present invention was made based on this new knowledge, and first, the twig stalks are removed from the paddy, the rice husk that wraps around the brown rice is shed, and the rice husk that wraps around the brown rice is husked to prevent the occurrence of grainy rice. Moreover, the aim is to achieve a dropout rate of approximately 100%.

(Means to solve the problem) and (effect) When paddy is continuously rubbed in two stages, front and back, between elastic rotating bodies with rubber hardness of 70"-50° and different circumferential speeds, the soft elastic rotating bodies Since the paddy is wrapped between them, the thin twig stalks attached to the paddy are also caught between opposing rotating bodies with different circumferential speeds and fall off along with the chaff.The paddy undergoes this dehulling action twice before and after.

(Example 1) In the example shown in Fig. 1, cylindrical rubber rolls 1 and 2 with a rubber hardness of 70° to 50° are arranged in parallel in a box body A in a lower row, facing each other, and A ventilation gap 3 is provided between the rolls 1 and 2 of one stage.

The air passage 4 from the air blower F installed on one side of the box body A passes through the ventilation gap 3 and below the lower roll 2 to reach the separator 5 in the direction IJ#n.

6 is the outlet for rice husks and twig stalks, 7 is the outlet for brown rice "1.8 is"
The paddy supply unit that extends between one roll 1.1.

Thus, the paddy in the hopper 8 is wrapped and rolled between the upper soft rolls 1 and 1, together with the twigs, and then rolled between the lower rolls 2 and 1.
Since it is printed in the same way between the two, it is completely removed to approximately 100%,
The air is blown into the separator 5 by the blower F, and the brown rice is discharged from the discharge lower to the outside of the machine through the chaff and twig stalks through the discharge port 6.

Note that the rubber hardness and rotation ratio of rolls 1 and 2 may be changed.

(Example 2) The example shown in Fig. 2 has a hardness of 70°-50 that rotates horizontally.
Two cylindrical rubber rolls 10 and 11 of similar hardness are placed opposite each other on the upper surface of the rubber disc 9.

First, the twigs and chaff of the rice are removed between the disk 9 and the rubber roll 10 at the front stage, and the remaining rice is rubbed in the same way between the disk 9 and the next rubber roll 11 at the rear stage, and is dehulled to approximately 100%.

Meanwhile, the light rice husks and twig stalks are blown away by the wind blowing in the diameter direction of the disk 9.

In addition, as shown by the dotted line, rolls lOa and 11a may be provided on the disc 9 on the same axis as the rolls 10 and 11 in two stages, front and rear.

(Example 3) In the example shown in FIG. 3, the cylindrical rubber roll in Example 2 is replaced with a conical rubber roll lOa, 11a.

Since the circumferential speeds of the small diameter portion and the large diameter portion of the conical rubber roll in the hulling gap with the rubber disk 9 are different, the rice grains are rubbed in a twisting manner.

(Other Examples) In addition, the horizontal rubber disks with a hardness of 70°-50° in Examples 2 and 3 were made into conical rubber disks with the outer periphery lowered, or inverted conical rubber disks with the center lowered. A corresponding cylindrical rubber roll or conical rubber roll of similar hardness may be tilted according to the rubber disc.

Further, the rubber hardness of the first stage elastic rotary body and the second stage elastic rotary body may be different within the range of 70°-50′.

(Effect of the invention) The elastic rotating bodies of the present invention having different circumferential speeds are soft with a rubber hardness of 70°-50°, so the dehulling rate is low, but since the paddy is wrapped in the opposing rotating bodies, it adheres to the base of the paddy. Thin twig stalks can also come into contact with the opposing rotating body and be scraped off together with the rice husks.

However, the hulling action that removes the twig stalks like a lever □
Since this process is carried out continuously over two stages, front and rear, the paddy that was not hulled during hulling in the previous stage can be husked in the latter stage.

Ru. In the case of the present invention, the hardness of the rubber is soft even if the printing is performed continuously in two stages, front and back, so even if the rotation ratio is increased to 35%, the amount of body-printed rice does not reach 10%. As shown in the graph of rotation ratio and rubber hardness, the paddy whose twig stalks could not be removed in the previous stage and the unhulled paddy even after the twig stalks were removed were dehulled to approximately 100% by the opposing rotating bodies in the rear stage. The fact that the mold can be removed is clearly shown in FIG. 4, where the mold removal rate is 99.3% when using a rotating body with a rubber hardness of 70°.

[Brief explanation of drawings]

Fig. 1 is a front view of the box body of Embodiment 1 of the present invention taken longitudinally to show the internal mechanism; The plan view and longitudinal front view of Example 3, and FIG. 4 are graphs showing the relationship between the demolition rate and rotation ratio of the rotating body according to rubber hardness, and the rotation speed of the high-speed rotating body was 150 Or under no load; p, m. FIG. 5 is a graph showing the relationship between the barrel deviation rate and rotation ratio of the rotating body according to rubber hardness, and the rotational speed of the high-speed rotating body is 150 Or, p, m, under no load. Figure 6 is a graph showing the relationship between the hulling gap, dehulling rate, and shell deviation rate, and the rubber hardness is 85°. The rotational speed of the high-speed rotating body is 150 Or, p, m under no load. The rotation ratio with respect to the low speed side is 35% when no load is applied. 1.2.10.11 is a cylindrical rubber roll, 3 is a ventilation gap, 4 is a ventilation path, 5 is a separator, 9 is a rubber disk, 10a
, 11a is a conical rubber roll. Agent Tetsube Maki (and 2 others) Figure 2 Figure 3 (a) Procedures in writing (spontaneous) 1. Indication of the case 1985 Patent Application No. 70529 2, Name of the invention Paddy-grilling device 3, Person making the amendment Relationship to the case Patent applicant 4, Agent 14-5-101 Sakuragaoka-cho, Shibuya-ku, Tokyo 6 , Column 7 of the scope of claims in the specification to be amended and the description of the contents of the amendment are amended as shown in the attached sheet. 1. The scope of claims in the specification is amended as follows.

Claims (1)

[Claims] A rice hulling device characterized by continuously scraping rice between two stages, front and rear, between elastic rotating bodies with rubber hardness of 70° to 50° and different circumferential speeds.