JPH03188944A - Mixing and storing method in multipass-type drying equipment and installation utilized therefor - Google Patents

Abstract

PURPOSE:To reduce deterioration of quality by previously drying grain having high moisture value to preliminary moisture value of high moisture and mixing this dried grain with grain having low moisture value and storing the mixture in a mixing and storing method in a multipass-type drying equipment. CONSTITUTION:In a mixing and storing method in a multipass-type drying equipment, firstly grain which is stored in a receiving tank 6 for goods and has high moisture value is dried to the preliminary moisture value of moisture higher than the proper moisture value by a dryer 9. This grain is stored in a silo A positioned to the part of the upper side of carrier in a carry-out line 11. Then the grain is dried to moisture value lower than the above-mentioned preliminary moisture value and thereafter the dried grain is stored in a silo 7B. The grains which are stored in the silos 7A, 7B and have different moisture value are mixed with each other while the grains are carried through the carry- out line 11, a junction line 14 and a receiving line 5. Thereby the moisture value of this mixed grain is regulated to the middle moisture value and the mixed grain is stored in the other silo 7C.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mixing and storage method for multi-pass drying equipment and equipment used therein.

[Conventional technology]

For example, in communal drying equipment that uses this type of multi-pass drying equipment mentioned above, the harvest time for the same type of grain is concentrated at one time, so the grain to be processed is received in a concentrated manner at one time. Become. If received grain is stored with a high moisture content, there is a risk of quality deterioration, so it is necessary to dry it quickly. Therefore, in order to cope with the concentration of receiving cargo, it is necessary to design the maximum processing capacity of the equipment to match the maximum throughput during the concentrated period, but if the processing capacity of the equipment is increased, Not only is there a disadvantage that the equipment becomes larger and more expensive, but
There is a disadvantage that the operating rate is low outside of the period when there is a high volume of receiving cargo, resulting in excess equipment.

By the way, if grains with a high moisture value and grains with a low moisture value are mixed, the moisture will move from the high moisture side to the low moisture side, reducing the overall moisture value to an extent that does not cause quality deterioration. is known to be possible.

Therefore, in order to reduce the processing capacity of the equipment to the extent that it corresponds to the average receiving volume, and at the same time to be able to cope with the peak receiving season, the grains with high moisture content received as they are are dried in a dryer. It is considered to use a mixed storage method in which grains with low moisture values are mixed and stored.

[Problem to be solved by the invention]

When grains with high and low moisture values are mixed together, moisture will be absorbed from the high moisture side to the low moisture side to achieve moisture balance, but if the difference in moisture values is large, drying and moisture absorption will occur rapidly. Because this is done, there is a risk of quality deterioration such as shell cracking.

In addition, simply mixing does not completely transfer moisture, resulting in equilibrium with a moisture difference remaining.
The greater the moisture difference before mixing, the greater the difference in moisture values after equilibrium. If grains with different moisture values are dried in a dryer at the same time, grains with low moisture values will be overdried, while grains with high moisture values will be underdried, leading to a similar decline in quality. be.

The present invention has been made in view of the above-mentioned circumstances, and its object is to provide a mixing and storage method for multi-pass drying equipment that causes less deterioration in quality, and equipment used therein.

[Means to solve the problem]

The feature of the mixing and storage method of the multi-pass drying equipment according to the present invention is that after the received grain with a high moisture value is pre-dried in a dryer to a pre-moisture value higher than the appropriate moisture value, the pre-dried grain is The grain is mixed with grains having a moisture value lower than the preliminary moisture value and stored in a silo.

Additionally, the characteristic configuration of the multi-pass drying equipment according to the present invention is as follows:
The receiving unit includes a tank, a silo, and a dryer, and the receiving unit includes a supply line that transports grain from the tank and the silo to the dryer, a return line that transports the grain from the dryer to the silo, and a return line that transports the grain from the dryer to the silo. The system is equipped with an unloading line for transporting the grain from the hull to a hulling and sorting section, and a receiving line for transporting the received grain to the grain tank. The cargo receiver is configured to be able to convey the grains to the silo as well, and the grain receiver is configured to transport grains from a location on the upper side of the husking section of the carrying out line to a location on the upper side of the silo on the line. The point is that there is a relay line for this purpose.

[For production]

As mentioned above, when mixing grains with different moisture values,
If the difference in moisture values is large, there are disadvantages such as quality deterioration or a large difference in moisture values after equilibrium, but if the difference in moisture values is small, rapid moisture movement will not occur.
There is less risk of quality deterioration. Moreover, the difference in moisture values after equilibrium also becomes smaller.

Therefore, in the method of the present invention, the received grain with a high moisture value is pre-dried in a dryer to a pre-moisture value higher than the appropriate moisture value, so that the received grain can be temporarily stored. By mixing pre-dried grains and grains with a lower moisture value than the preliminary moisture value and storing them in a silo, the difference in moisture value between the grains to be mixed is reduced to prevent quality deterioration. It is.

In the multi-pass drying equipment according to the present invention, the grains are circulated between the dryer and the silo and dried to an appropriate moisture content, making effective use of the inherent structure of the equipment to enable mixing and storage. In order to do this, the receiver allows the line to also transport grain to the silo, and also allows the receiver to receive grain from a location above the hulling and sorting section of the carry-out line that transports grain from the silo to the hulling and sorting section. By providing a relay line for mixing and storage at a location above the silo in the line, it is possible to dry the received grain to a reserve moisture value, and to dry the pre-dried grain to a moisture content lower than its reserve moisture value. By making it possible to efficiently mix grain with other grains, it is possible to handle a volume of cargo that exceeds the original processing capacity.

〔Effect of the invention〕

As a result, it has become possible to provide a mixing and storage method for multi-pass drying equipment with little quality deterioration and equipment used therefor.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in Fig. 1, the multi-pass drying equipment receives grain from two receiving hoppers (1).
After passing through the rough sorting section (2) which also serves as a fine sorter to remove straw waste, dust, etc. mixed in, the two parallel receivers are placed in one of the reserve tanks (3) for needle measurement. The receivers are transported to the weighing section (4) via the line (5) for weighing, and the receivers are separated by the same type or moisture value range by the line (5), and the receivers are temporarily stored in tanks (6). It is designed to be stored in. However, the receiving line (5) is configured to be able to transport grain to any of a plurality of silos (7) for storing dried grains arranged in parallel in a tank (6). .

The said consignment is grain with a high moisture value stored in a tank (6),
Alternatively, the grain stored in the silo (7) is conveyed to a dryer (9) by a supply line (8) and dried until it reaches an appropriate moisture content.

The grains dried in the dryer (9) are passed through the reduction line (1
0) to be transported to the silo (8) and stored again. However, in order to allow the grains conveyed by the supply line (8) to pass through the dryer (9) multiple times, the reduction line (■0) has a branch to the dryer (9). (IOA).

The dried grains stored in the silo (7) are transported to the hulling and sorting section (12) by a carry-out line (11). However, the dried grains transported by the carry-out line (11) are stored in an auxiliary tank (1) for storage.
3), the rice is transported to the hulling and sorting section (12).

Then, the hulling sorting section (1) of the carrying out line (11)
A relay line (14) for mixing and storage is provided for conveying grains from a location on the upper side of the transport line (5) to a location on the upper side of the transport line (7) than the silo (7). 7) Mix grains with different moisture values among the stored grains while being transported by each of the carry-out line (11), the relay line (14), and the receiving line (5). It is now possible to do so.

Although not described in detail, the hulling and sorting section (12) separates the hulling section (12A) for hulling and the processed material from the hulling section (12A) into, for example, paddy, paddy and brown rice. A sorting section (12B) that separates and collects the mixture and brown rice, a rough sorting section (12C) and a fine sorting section (12D) that sort the brown rice to be sorted and collected based on the grain size, and stones etc. that are mixed in. It is equipped with a stone removal section (12 tons) for removing the unpolished rice, and paddy other than the brown rice and mixed rice can be circulated within the hulling and sorting section (12).

Incidentally, the sorting section (12B) can also be used when sorting the grains in the silo (7) as necessary. In other words, if it is necessary to reliably remove straw waste, husked rice, etc. from the grain, and then hull it and sort it before shipping, the grain in the silo (7) is )
The paddy is led to the sorting section (12B) through the filter, where it is sorted into paddy, dehulled rice, and twigs.The paddy is passed through the weighing section (4) and returned to the silo (
7). Incidentally, during this kind of sorting, the paddy is sorted as the above-mentioned mixture, the twig stalks are sorted as the above-mentioned paddy, and the dehulled rice is sorted as the brown rice, and the twig stalks are transported to the rough sorting section (2). The dehulled rice is sorted in a rough sorting section (12C), a fine sorting section (12D), and a stone removing section (12E). In addition, in the figure (
12F) is a line that returns brown rice during hulling sorting and dehulled rice during silo grain sorting to the sorting section (12B) during the unstable sorting period immediately after the start of sorting.

The brown rice sorted and collected from the hulling and sorting section (12) is -
The products are transported to each of a plurality of shipping tanks (17) via an auxiliary storage tank (15) and a measuring section (16), and then shipped.

To explain the mixing process of the grains stored in the silo (7), as shown in FIG.
drying the grains by the dryer (9) to a pre-moisture value (e.g. 20%) at which they can be stored for - hours;
It is stored in a silo (7A) located on the upper side of the transport line (11). Next, the grains dried to a moisture value lower than the preliminary moisture value (for example, 15%) are transferred to a location downstream of the transport line (11) from the silo (7A) where the grains with the preliminary moisture value are stored. Silo (7B)
The grains with different moisture values stored in both the silos (7A) and (7B) are transferred to the carry-out line (11), the relay line (14), and the receiving line (5). ) is mixed during conveyance, so that the overall moisture value becomes an intermediate moisture value (17.5%) between the preliminary moisture value (20%) and the low moisture value (15%). It is stored in another silo (7C) located between (7A) and (7B).

Since the grain dried to the preliminary moisture value (20%) has a short elapsed time after passing through the dryer (9),
The grain temperature will be higher than grain that was previously dried to a low moisture value (15%). Therefore, as shown in Figure 3,
The grains having the preliminary moisture value (20%) that have passed through the dryer (9) are conveyed in the direction of the relay line (14) by the unloading line (11), while the grains having the preliminary moisture value (20%) By discharging the grains with low moisture values (15%) at the same time, the grains with different moisture values are mixed while being conveyed to the silo (7C) while ensuring efficient moisture transfer. It is.

Therefore, it is possible to simultaneously dry the received grain with a high moisture value to the reserve moisture value, and to mix and store the grain with the reserve moisture value and the grain with a lower moisture value. Even during busy periods of receiving cargo, grains with high moisture content can be dried efficiently without having to be stored for long periods of time.

However, the mixed grains will be dried to a set moisture level and shipped when the concentration of grains decreases. Furthermore, when there are not many grains to be received, grains with different moisture values can be dried as usual without being mixed together.

[Another example]

2 In the above embodiment, the cargo receiving tank (6) and the silo (7) are arranged side by side, but they may be arranged separately, and the specific configuration of each part necessary for carrying out the present invention is teeth,
Various changes can be made.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the mixing and storage method of multi-pass drying equipment according to the present invention and the equipment used therein, in which FIG. 1 is an explanatory diagram of a grain conveyance route, and FIGS. 2 and 3 are explanatory diagrams of grain mixing. It is. (5)・・・・・・The receiving line is (6)・・・・・・
Receiving cargo is in tank, (7)...silo, (8)
...... Supply line, (9) ... Dryer,
(10)・・・Return line, (11)・・・・・・
・Export line, (14)...Relay line.

Claims (1)

[Claims] 1. After pre-drying the received grains with a high moisture value using a dryer (9) to a preliminary moisture value that is higher than the appropriate moisture value, This is a mixed storage method using multi-pass drying equipment, in which grains with low moisture values are mixed with grains and stored in a silo (7). 2. Receiving tank (6), silo (7), and dryer (
9) and a supply line (8) conveying grain from the receiving tank (6) and the silo (7) to the dryer (9).
, a return line (10) that transports the grain from the dryer (9) to the silo (7), and a discharge line (1) that transports the grain from the silo (7) to the hulling and sorting section (12).
1) and a receiving line (5) for transporting the received grain to the receiving tank (6), wherein the receiving line (5) transports the grain to the silo (7). The structure is configured such that grains from a location on the upper side of the transportation line than the huller sorting section (12) of the carrying out line (11) can be transported on the upper side of the transportation line (5) than the silo (7) on the receiving line (5). A multi-pass drying facility equipped with a relay line (14) for mixed storage that is transported to a side location.