JP2019171261A - Rice polishing factory, and processing method of grain - Google Patents

Abstract

To sterilize rice more securely in a rice polishing factory.SOLUTION: A rice polishing factory includes: load receiving equipment for receiving grain in a rice polishing factory; a rice polishing machine which is arranged in a later process than the load receiving equipment and polishes the grain; a product tank which is arranged in a later process than the polishing machine and stores the grain; and a sterilizer which is arranged in a later process than the load receiving equipment and in a previous process than the product tank, and sterilizes the grain.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a grain processing technique.

  Conventionally, it is known that white rice obtained by milling brown rice in rice mills is sterilized immediately before bagging for carrying out (for example, Patent Document 1 below). As a result, even if a pest egg is attached to the white rice, the egg does not hatch, so that it is possible to prevent the rice from being contaminated by the pest in the subsequent distribution process.

JP 62-58951 A

  However, since brown rice is brought into the milled rice plant and then white rice is taken out, the bacteria that adhere to the rice are propagated and propagated. However, sterilization could be incomplete. Alternatively, in order to completely sterilize those bacteria, there is a possibility that a sterilization apparatus having excessive capacity or performance may be required. Such a problem is not limited to rice mills, and is common to milling mills that mill various grains.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as, for example, the following forms.

  According to the first aspect of the present invention, a milling factory is provided. This milling factory is equipped with a receiving facility for accepting grains to the milling factory, and is provided in a later process than the receiving facility, and a milling machine for milling grains and is installed in a later process than the milling machine to store grains. And a sterilizing apparatus that is provided in a process after the cargo receiving facility and in a process preceding the product tank and sterilizes the grain.

  According to such a milling mill, the grain is sterilized before being stored in the product tank. For this reason, it is possible to prevent the bacteria in the grains from growing and breeding in the product tank. In other words, since the amount of bacteria before being propagated and propagated in the product tank will be sterilized, it will be more reliable than when sterilized immediately before carrying out (at the stage where growth and reproduction are most developed). Can be sterilized. Or it can suppress that the capability or performance of a sterilizer becomes excessive.

  According to the second mode of the present invention, in the first mode, the milling factory is provided with a storage tank for storing grain, which is provided in a process after the cargo receiving facility and in a process before the milling machine. ing.

  According to the 3rd form of this invention, in a 2nd form, a sterilizer is provided in a front process rather than a storage tank. According to this form, the grains carried into the milling factory can be sterilized before being stored. Therefore, the effect of the first embodiment can be maximized.

  According to the 4th form of this invention, in the 2nd or 3rd form, a sterilizer is provided in a back process rather than a storage tank. According to this form, compared with the 3rd form, the processing capacity of a sterilizer can be reduced. Specifically, when the sterilizer is provided in a process preceding the storage tank, the processing capacity of the sterilizer is set based on the peak value of the fluctuation so that it can cope with the fluctuation in the amount of carry-in to the milling factory. The On the other hand, according to the 4th form, since the said fluctuation | variation can be absorbed with a storage tank, the processing capacity of a sterilizer can be set based on the average carrying amount to a refinery factory.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the sterilizer is a superheated steam sterilizer. According to this form, a high bactericidal effect can be obtained. And when combined with the 3rd or 4th form, the oxidation of the cocoon obtained by a sperm can be suppressed. In addition, when combined with the third or fourth embodiment, the grain cocoon layer is softened by the sterilization treatment in the sterilization apparatus, so that it is easier to perform semen with a scouring machine installed in a later process than the sterilization apparatus.

  According to the 6th form of this invention, in a 1st form, a sterilizer is provided in a pre-process rather than a milling machine. The sterilizer is a superheated steam sterilizer. According to this form, the oxidation of the cocoon obtained by sperm can be suppressed. Moreover, since the cocoon layer of the grain is softened by the sterilization process in the sterilizer, it is easier to perform the scouring with the scourer installed in the subsequent process than the sterilizer.

  According to the 7th form of this invention, the processing method of a grain is provided. In this grain processing method, the grain is stored in a first process for accepting the grain, a second process in which the grain is refined in a later process than the first process, and a process in a later process than the second process. A third step, and a fourth step of sterilizing the grain in a step after the first step and in a step before the third step. According to this grain processing method, the same effects as in the first embodiment can be obtained.

It is a block diagram of a rice mill by one embodiment of the present invention. It is a block diagram of a sterilizer.

  FIG. 1 is a block diagram of a rice mill 10 according to an embodiment of the present invention, and also shows the flow of processing steps in the rice mill 10. The brown rice carried into the rice mill 10 is first received by the rice mill 10 by a cargo receiving hopper 20 as a cargo receiving facility. Then, the received brown rice is processed by the coarse sorter 21. In the coarse sorter 21, coarse particles (for example, stones, straws, paper strings, lint) mixed in the brown rice are removed by the rotary screen.

  Next, the brown rice is processed by a stone remover 22 to remove stones mixed in the brown rice. For example, the stone remover 22 supplies brown rice onto a sorting net, and separates the brown rice from the stone based on buoyancy generated in the brown rice by adding vibration and wind. Next, the brown rice is processed by a falling-down sorter 23. The falling-down sorter 23 removes coarse dust mixed in the brown rice by passing the net through the brown rice. Next, the brown rice is weighed by the weighing machine 24.

  Next, the brown rice is processed by the sterilizer 30. In this embodiment, the sterilizer 30 is a superheated steam type. By using the superheated steam sterilizer, a high sterilizing effect can be obtained. In this specification, “sterilization” includes sterilization of bacteria, etc. adhering to grains, as well as insect pests mixed in grains, and eggs of pest eggs laid on or inside grains. obtain. Superheated steam sterilizers are known, and for example, the device described in WO2017 / 033877 can be used. However, the sterilizer 30 may be of any type, for example, an ultraviolet system.

  FIG. 2 is a block diagram of the sterilizer 30. The superheated steam type sterilizer 30 includes a heating unit 31, a cooling unit 32, and a finishing adjustment unit 33. The heating unit 31 irradiates the brown rice with superheated steam at about 250 ° C. while stirring the brown rice. The cooling unit 32 performs cooling and moisture adjustment of the brown rice by supplying cooling air to the brown rice. The finish adjusting unit 33 performs cooling and moisture adjustment more strictly by supplying cooling air to the brown rice.

  According to this sterilizer 30, bacteria (for example, coliforms) and fungi adhering to the brown rice surface are effectively sterilized. In addition, insecticidal and egg-killing effects can be expected. Furthermore, since the hydrolase is deactivated by the heat treatment, it is possible to suppress a decrease in freshness of white rice obtained by brown rice and polished rice. Moreover, since the hydrolase is also deactivated from the rice bran obtained from the milled rice, if the sterilizer 30 is installed in a process preceding the rice milling process, oxidation of the rice bran obtained from the rice milling can be suppressed. As a result, the transportation of firewood to the oil and fat company can be performed in a planned and efficient manner, and the oil extraction rate from the firewood is improved. Alternatively, the salmon can be used for food. Furthermore, since the straw layer of brown rice is softened by heating and humidification, if the sterilizer 30 is installed in the process before the rice polishing process, it is easy to perform the rice polishing. Furthermore, if a brown rice is hydrotreated so that the water | moisture content may be 20-25%, if it sterilizes with the superheated steam type sterilizer 30, the GABA enrichment effect can also be anticipated.

  Here, the description returns to FIG. The sterilized brown rice is then stored in a brown rice tank (storage tank) 25. The brown rice stored in the brown rice tank 25 is polished by a rice mill (milling machine) 26. The white rice obtained by the polished rice is subjected to a sorting process by the sorter 27 to remove foreign matters and the like. As the sorter 27, for example, a sieve sorter or an optical sorter can be used. The sorted rice is stored in the product tank 28. The stored white rice is appropriately cut out, weighed and packaged by the weighing and packaging machine 29, and then carried out of the rice mill 10.

  According to the rice mill 10 described above, the sterilization device 30 is sterilized on the upstream side in the processing process of the rice mill 10 compared to the conventional rice mill where the sterilizer 30 is installed between the product tank 28 and the weighing and packaging machine 29. Done. For this reason, compared with the said conventional rice mill, the proliferation and reproduction of a microbe can be prevented at an early stage, and it can sterilize more reliably. Or it can suppress that the capability or performance of the sterilizer 30 becomes excessive. In addition, since the sterilization apparatus 30 is installed in a process prior to the brown rice tank 25, that is, the brown rice carried into the milled rice factory 10 is promptly sterilized without being stored, so that the effect of sterilizing more reliably can be obtained. Can be maximized. In addition, insects can be prevented from occurring in the factory.

  Further, according to the rice mill 10, sterilization is performed by the superheated steam sterilizer 30 in a process preceding the rice mill 26. Therefore, as described above, the oxidation of koji obtained by milled rice can be suppressed. In addition, the rice bran layer is softened by heating and humidification, so it is easy to polish.

  The sterilizer 30 may be installed at an arbitrary position between the cargo receiving hopper 20 and the product tank 28 in the processing step instead of the example shown in FIG. For example, the sterilizer 30 may be installed in a later process than the brown rice tank 25. In this way, the processing capacity of the sterilizer 30 can be greatly reduced. Specifically, when the sterilizer 30 is provided in a process prior to the brown rice tank 25, the processing capacity of the sterilizer 30 can be adjusted to the fluctuation of the amount carried into the rice mill 10, and the peak of the fluctuation. Set based on the value. On the other hand, when the sterilizer 30 is installed between the brown rice tank 25 and the rice mill 26, the fluctuation can be absorbed by the brown rice tank 25, so that the processing capacity of the sterilizer 30 is averaged into the rice mill 10. Can be set based on quantity. For example, when the processing capacity of the sterilizer 30 provided in the previous process than the brown rice tank 25 is set to 10 to 15 t / h, if the sterilizer 30 is disposed between the brown rice tank 25 and the rice mill 26, The processing capacity of the sterilizer 30 can be set to about 5 t / h.

  The rice mill 10 may be provided with a plurality of sterilizers. For example, the sterilizer 30 may be installed both between the weighing machine 24 and the brown rice tank 25 and between the brown rice tank 25 and the rice milling machine 26. In this case, the plurality of sterilization apparatuses may be different from each other.

  Although some embodiments of the present invention have been described above, the above-described embodiments of the present invention are intended to facilitate understanding of the present invention and are not intended to limit the present invention. The present invention can be changed and improved without departing from the spirit thereof, and the present invention includes equivalents thereof. Moreover, in the range which can solve at least one part of the subject mentioned above, or the range which exhibits at least one part of an effect, the combination of each component described in the claim and the specification, or omission is possible. . For example, the equipment configuration of the rice mill 10 described above is an example, and instead of or in addition to a part of each of the above-described devices, other arbitrary devices may be installed. Moreover, this invention is applicable not only to a rice mill but the milling mill which scours arbitrary grains.

DESCRIPTION OF SYMBOLS 10 ... Rice mill 20 ... Receiving hopper 21 ... Coarse sorter 22 ... Stone remover 23 ... Flowing type sorter 24 ... Weighing machine 25 ... Brown rice tank 26 ... Rice rice machine 27 ... Sorting machine 28 ... Product tank 29 ... Weighing and packaging machine 30 ... Sterilizer 31 ... Warming unit 32 ... Cooling unit 33 ... Finish adjustment unit

Claims (7)

It is a millet factory,
Receiving equipment for accepting grains to the milling factory;
A milling machine for milling the cereal, which is provided in a later process than the receiving facility,
A product tank for storing the grain, provided in a later process than the milling machine;
A milling factory comprising: a sterilization apparatus that is provided in a post-process than the product receiving facility and in a pre-process before the product tank, and sterilizes the grain. A milling factory according to claim 1,
A milling factory provided with a storage tank for storing the grain, which is provided in a process subsequent to the cargo receiving facility and in a process prior to the milling machine. A milling factory according to claim 2,
The sterilizer is a mill factory provided in a process preceding the storage tank. A milling factory according to claim 2 or claim 3,
The sterilizer is a mill factory provided in a later process than the storage tank. A milling mill according to any one of claims 1 to 4,
The sterilizer is a superheated steam sterilizer. A milling factory according to claim 1,
The sterilizer is provided in a pre-process rather than the milling machine,
The sterilizer is a superheated steam sterilizer. A method for processing grain,
A first step of accepting grains;
A second step of scouring the cereal in a step after the first step;
A third step of storing the grain in a later step than the second step;
A grain processing method comprising: a fourth step of sterilizing the grain in a step after the first step and in a step before the third step.

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