JPS61173717A - Method for drying and storing hulled rice - 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 FIELD OF INDUSTRIAL APPLICATION The present invention relates to a method for drying and storing unhulled rice, which makes efficient use of a plurality of storage tanks to save thermal energy and perform efficient drying.

Conventional technology and its problems In general, the moisture content of unhulled rice delivered to unhulled rice drying and storage facilities differs depending on the region, harvesting time, etc., but the moisture content of raw unhulled rice is usually 30 to 20%, and the unhulled rice is The goal is to dry around %. This is because the moisture content is optimal for adjustment processing after drying. And the normal moisture content is 30%
The raw paddy at ~20% harvest has a high moisture content, which causes quality deterioration of the unhulled rice through fermentation, etc., so it is necessary to dry it within one to several days, which reduces the capacity of the grain dryer. Efforts were also being made to increase the size of the silo to match the storage capacity and dry it within one to several days. However, increasing the capacity of the dryer requires a large amount of fuel consumption and has the problem that it cannot be easily implemented considering the amortization of equipment costs.

Purpose of the Invention In view of the above points, the present invention has been developed by mixing unhulled rice with different moisture contents, supplying it to the same storage tank, tempering it, drying the tempered unhulled rice with a grain dryer, and drying it in any storage tank at any given time. By tempering rice with a high moisture content, it changes from a high-moisture rice to a low-moisture rice (such as drying rice)
It transfers grain moisture to the grain and equalizes the grain temperature throughout, thereby effectively shortening the drying time in the grain dryer and saving thermal energy, as well as reducing the storage tank and low moisture content. The purpose of the present invention is to provide a method for drying and storing unhulled rice that effectively utilizes unhulled rice and improves drying efficiency.

Method of the Invention The method of drying and storing unhulled rice of the present invention is to mix the discharged unhulled rice from a plurality of storage tanks storing unhulled rice with different moisture contents, supply the same to the same storage tank, temper it, and then temper the unhulled rice. The method is characterized in that unhulled rice is supplied to a grain dryer, dried, and then supplied to an arbitrary storage tank to be tempered to unhulled rice with an arbitrary predetermined moisture content.

DESCRIPTION OF EMBODIMENTS A preferred embodiment of the present invention will be described with reference to FIGS. 1 and 2.

In addition to arranging multiple storage tanks in a row,
A grain dryer 2 is provided around the storage tank 1, a feeding grain frying machine 3 is provided on one side of the storage tank 1, and the discharge part of the grain drying machine 3 is provided at the top of each tank. A drying discharge conveyor 6 and a circulating discharge conveyor 7 are arranged in parallel in the lower part of each tank, which is connected to the grain feeding conveyor 4 via a flow pipe 5 (see Fig. 2), and A discharge hopper 8.9 is connected to the discharge side of each conveyor 6. 1111 through a flow path, and a plurality of branch pipes 12 and 13 are connected to the discharge part of the grain lifting machine 11 via a switching valve 14 (see Fig. 1), and one of the branch pipes 12 is connected to the supply section of the grain dryer 2, and the other branch pipe 13 is connected to the grain feeding conveyor 4, and a hopper 9 provided on the circulation discharge conveyor 7 side shown in FIG. A grain rough separator 8116 is connected to the feed section of the feed grain frying machine 3 through a flow path, and is also connected to the loading hopper 15 in the previous stage of the grain dryer 2, and the A grain frying machine 17 for rough sorting is provided, and a plurality of branch pipes 18 and 19 are connected to the discharge part of the grain frying machine 17 via a switching valve 20, and one of the branch pipes 18 is connected to the grain dryer 2. At the same time, the other branch pipe 19 is connected to the supply section of the grain feeding machine 3, and the grain discharge passage 10 of the grain dryer 2 is connected to the second branch pipe 19.
It is connected to the hopper 9 provided on the side of the circulation discharge conveyor 7 in the figure, 21 in FIG. 1 is the burner of the dryer, 22 is the grain lifting machine connected to the staked hopper 15, and 23 is the grain feeding valve of the storage tank. , 24 is a drying grain threshing valve installed at the discharge part of the storage tank, 24A in FIG. 2 is a circulation grain threshing valve installed at the storage tank discharge part, 25 in FIG. 1 is a moisture meter, and 26 is a control device. It is.

Next, its effect will be explained. The unhulled rice delivered to the unhulled rice drying storage facility is put into the loading hopper 15, its moisture content is measured by the moisture meter 25, and the grain lifting machine 2
2 to the grain coarser 16. The coarse sorter 16
The hulled rice from which impurities have been removed is fried by a grain frying machine 17 for rough sorting, and flows down a branch pipe 19 to a grain frying machine 3 for supply.
The unhulled rice flows into the feeding section, is fried by the grain lifting machine 3, and flows into the grain feeding conveyor 4 at the top of the tank.The unhulled rice is transferred to an arbitrary number of storage tanks based on the measured moisture content. They are stored separately. When drying high-moisture unhulled rice in any storage tank 1, the drying discharge valve 24 provided at the discharge part of the storage tank 1 is opened, and the unhulled rice is allowed to flow down to the drying discharge conveyor 6. The grains are transported and supplied to the supply section of the drying grain lifting machine 11 via the discharge hopper 8. The unhulled rice is fried by a drying grain frying machine 11,
Further, it flows down to the grain dryer 2 via the branch pipe 13 and is dried with hot air, and the dried unhulled rice flows down the grain discharge path 10 from the dryer 2 discharge section to the circulation discharge conveyor shown in FIG. It flows into the discharge hopper 9 on the 7 side. At this time, the unhulled rice in another storage tank 1 to be mixed with the dry unhulled rice is allowed to flow down to the circulation discharge conveyor 7 by opening the circulation discharge valve 24A provided at the discharge part of the storage tank 1. Since the unhulled rice is conveyed and flows down to the discharge hopper 9, the unhulled rice in another storage tank 1 and the above-mentioned dried unhulled rice are mixed in the discharge hopper 9, and the mixed unhulled rice is discharged from the discharge hopper 9. The mixed unhulled rice flows down to the supply section of the supplying grain lifting machine 3, is fried by the grain lifting machine 3, and is supplied to the grain feeding conveyor 4 on the upper part of the tank, and the mixed unhulled rice is conveyed to the empty state. It flows down into the storage tank 1 and is stored and tempered.

In the present invention, by tempering the mixed paddy rice in the storage tank 1, the high moisture paddy rice is changed to the low moisture paddy rice (
The grain moisture is transferred to the hulled rice (in the process of drying), and the mixed unchallenged rice, whose grain temperature has been completely equalized, is carried into the grain dryer 2 and re-dried, and the empty storage tank 1 is re-dried.
The process of drying and tempering the unhulled rice is transported and stored, and then tempered to a desired moisture content.The transport flow process for drying and tempering the unhulled rice can be easily inferred from the above-mentioned explanation of the transport flow process for drying and tempering the unhulled rice. Since it is possible, the description is omitted. In addition, as for the conditions for the above-mentioned mixed unhulled rice, it is preferable to mix unhulled rice with a moisture content of 20% or more with unhulled rice with a moisture content of about 4% to obtain a tempering effect.
Good results can be expected by mixing unhulled rice with a moisture content of 20% to 17% with unhulled rice with a moisture difference of less than 2%, and with unhulled rice with a moisture content of 17% to 16% with unhulled rice with a moisture content of less than 1%. It is also possible to mix unhulled rice with different grain temperatures.
Efficiently progress its tempering action. In addition, as a method of mixing unhulled rice, the unhulled rice that has passed through the grain rough sorter 11116 from the loading hopper 15 is directly supplied to the grain dryer 2 via the branch pipe 18 and dried with hot air, and the dried unhulled rice is then transferred to the flow tube. 10 to the discharge hopper 9, unhulled rice that meets the above conditions is selected from any storage tank 1 and discharged, conveyed by the circulation discharge conveyor 7 and flowed down to the discharge hopper 9 to form mixed unhulled rice. may generate,
Further, the unhulled rice that has been tempered again to a predetermined moisture content is appropriately taken out from the storage tank and sent to the next process.

DETAILED DESCRIPTION OF THE INVENTION As described above, the present invention is to mix unhulled rice with different moisture contents and supply it to the same storage tank for tempering, and then dry the tempered unhulled rice with a grain dryer and store it in any storage tank. By tempering hulled rice with a predetermined moisture content, grain moisture is transferred from hulled rice with a high moisture content to hulled rice with a low moisture content (unhulled rice in the process of drying, etc.), and the temperature of the whole grain is equalized. Therefore, the drying time in the grain dryer can be effectively shortened and thermal energy can be saved, and the capacity of the dryer relative to the number of storage tanks can be appropriately reduced to promote amortization of equipment costs. Effects such as improved drying efficiency can be achieved by effectively utilizing moist unhulled rice.

[Brief explanation of drawings]

FIG. 1 is a side view of the dry storage device for unhulled rice, and FIG. 2 is a plan view of the main part of the discharge conveyor. 1... Grain dryer for storage tank 2... Grain frying machine for supply 4... Conveyor for grain feeding 5... Flow pipe 6... Discharge conveyor for drying 7... Discharge for circulation Conveyor 8.9...Discharge hopper 10...Grain discharge path 1
1... Grain frying machine for drying 12, 13... Branch pipe 1
4...Switching valve 15...Hopper for loading 1
6... Grain rough sorting $1 17... Grain frying machine for rough sorting 1
8.19...Branch pipe 2o...Switching valve 21...
Burner 22...11 machine 23...grain feeding valve
24... Drying grain threshing valve 24A... Circulating grain threshing valve 25... Moisture meter 26... Control device

Claims (1)

[Claims] The discharged paddy rice from multiple storage tanks storing paddy rice with different moisture contents is mixed and supplied to the same storage tank for tempering.The tempered paddy rice is then supplied to a grain dryer and dried to produce any desired product. A method for drying and storing unhulled rice, characterized by supplying it to a storage tank and tempering it to an arbitrary predetermined moisture content.