阅读说明：本技术 米凝胶制造系统以及米凝胶制造方法 (Rice gel production system and rice gel production method ) 是由 土屋邦保 野田修平 大谷悠树 山下知沙 于 2019-09-24 设计创作，主要内容包括：在用于制造米凝胶(RG)的米凝胶制造系统以及米凝胶制造方法中,提供一种：能够以低成本且高效率来制造出被充分杀菌且高品质的米凝胶的技术。米凝胶制造系统具备：在密闭容器(21)内一边搅拌已被加水后的米原料(R0)一边进行加热来获得糊化物(R1)的加热搅拌部(20)、以及对利用加热搅拌部(20)获得的糊化物(R1)进行粉碎来获得米凝胶(RG)的粉碎部(40)。(In a rice gel manufacturing system and a rice gel manufacturing method for manufacturing Rice Gel (RG), there is provided: a technique capable of producing a rice gel of high quality and sufficiently sterilized at low cost and high efficiency. The rice gel production system is provided with: a heating and stirring part (20) for heating the rice raw material (R0) added with water in a closed container (21) to obtain a pasty material (R1), and a crushing part (40) for crushing the pasty material (R1) obtained by the heating and stirring part (20) to obtain Rice Gel (RG).)

1. A rice gel production system for producing a gel-like rice gel, characterized in that,

the rice gel production system is provided with: a heating and stirring section for heating the water-added rice material in a closed container while stirring the rice material to obtain a paste; and a grinding section for grinding the gelatinized material obtained by the heating and stirring section to obtain the rice gel.

2. The rice gel manufacturing system of claim 1,

the heating and stirring section includes: and a coarse grinding blade that rotates in the closed container to coarsely grind the rice material.

3. The rice gel manufacturing system according to claim 1 or 2,

the heating and stirring section is configured to include: a scraping type stirring blade which rotates in the closed container and stirs the rice raw material while scraping off deposits on an inner circumferential surface of the closed container; and a heating unit that heats an outer peripheral surface of the sealed container.

4. The rice gel production system as claimed in any one of claims 1 to 3,

the pulverization portion is configured to have: a rotor having cutting and crushing teeth formed on an outer peripheral surface thereof and rotationally driven around an axis; and a sleeve that surrounds the outer peripheral surface of the rotor with a gap therebetween through which the paste passes.

5. The rice gel production system as claimed in any one of claims 1 to 4,

the rice gel production system is provided with: and a closed conveying section for conveying the paste discharged from the heating and stirring section to the pulverizing section without contacting the paste with the atmosphere.

6. A method for producing rice gel, which is used for producing gel-like rice gel,

the rice gel production method comprises: a heating and stirring step of heating the water-added rice material in a closed container while stirring the rice material to obtain a paste; and a grinding step of grinding the gelatinized material obtained in the heating and stirring step to obtain the rice gel.

Technical Field

The present invention relates to a rice gel production system and a rice gel production method for producing a gel-like rice gel from a rice material such as polished rice, brown rice, or rice bran.

Background

In recent years, rice gels that can maintain the taste of foods for a relatively long period of time and have good handling properties have been focused on as substitutes for rice flour.

As a method for producing such a rice gel, there has been proposed a method in which a rice material such as polished rice or brown rice is cooked or steamed in a cooking section, the cooked rice thus obtained is conveyed to a grinding section, and the conveyed cooked rice is ground in the grinding section to obtain a rice gel (see, for example, patent document 1). Further, in the method for producing rice gel described in patent document 1, the rice gel is produced by providing the 2-stage pulverizing section in which the 1 st pulverizing section and the 2 nd pulverizing section are arranged in series, pulverizing the rice relatively coarsely by the 1 st pulverizing section, and then finely pulverizing the 1 st pulverized rice by the 2 nd pulverizing section, whereby the pulverizing load of each pulverizing section can be reduced and high-quality rice gel can be produced.

In recent years, further studies have been made on: rice bran obtained by producing polished rice from raw rice is used as a rice raw material for producing rice gel.

Documents of the prior art

Patent document

Patent document 1: international publication No. 2018/088092

Disclosure of Invention

In the conventional rice gel manufacturing system, in order to manufacture high-quality rice gel, 3 process devices of a rice cooking section, a 1 st crushing section, and a 2 nd crushing section are required, and a conveying mechanism such as a belt conveyor for conveying rice to the crushing section is also required, and therefore, there are the following problems: this causes a problem of an increase in facility cost or a deterioration in production efficiency.

Further, the conveying mechanism for conveying the cooked rice is configured to: since the object to be conveyed is a solid object, a so-called open system in which the object to be conveyed is exposed to the atmosphere is indispensable for the subsequent steps of heat sterilization treatment in order to commercialize rice gel in a state that can be managed at normal temperature.

In view of the above, a main object of the present invention is to provide a technique for producing a rice gel at low cost and high efficiency, by which a rice cooking process for obtaining rice by cooking or steaming a rice material in advance can be omitted in a rice gel production system and a rice gel production method for producing a rice gel.

The rice gel production system according to the present invention has a configuration of the 1 st feature: a rice gel production system for producing a gel-like rice gel, the rice gel production system comprising: a heating and stirring section for heating the water-added rice material in a closed container while stirring the rice material to obtain a paste; and a grinding section for grinding the gelatinized material obtained by the heating and stirring section to obtain the rice gel.

A rice gel production method according to the present invention is a rice gel production method for producing a gel-like rice gel, the rice gel production method including: a heating and stirring step of heating the water-added rice material in a closed container while stirring the rice material to obtain a paste; and a grinding step of grinding the gelatinized material obtained in the heating and stirring step to obtain the rice gel.

According to the above configuration, the heating and stirring unit performs: a heating and stirring step of heating a rice material such as polished rice, brown rice or rice bran to obtain a paste while stirring the rice material to which water has been added in a closed vessel, and a grinding section for: the crushing step of crushing the gelatinized material obtained in the heating and stirring step can produce rice gel from rice material by the above-mentioned operation alone. Thus, the rice cooking process for cooking or steaming the rice material in advance to obtain the cooked rice can be omitted, and the facility cost can be reduced and the production efficiency can be improved.

Further, since the rice material is heated while being stirred in the heating and stirring section to produce a gelatinized material, the rice grains contained in the gelatinized material become: a state of being damaged to some extent. This can reduce the grinding load in the grinding section for grinding the paste. Thus, the rice gel production amount can be increased to increase the processing amount of the grinding part, and simultaneously: when the paste is pulverized by the pulverizing section so that the granular sensation is reduced, frictional heat is applied to the paste. Thereby, discoloration of the rice gel due to the frictional heat can be suppressed, and a high-quality rice gel can be produced.

Therefore, according to the present invention, it is possible to provide a technique for manufacturing a rice gel at low cost and high efficiency, while omitting a rice cooking process for obtaining rice by cooking or steaming a rice material in advance, in a rice gel manufacturing system and a rice gel manufacturing method for manufacturing a rice gel.

The rice gel production system according to the present invention has a configuration of the 2 nd feature in that the heating and stirring section includes: and a coarse grinding blade that rotates in the closed container to coarsely grind the rice material.

According to the above configuration, the heating and stirring unit is provided with, in addition to the stirring mechanism for stirring the rice raw material to which water has been added in the closed container: a rotary coarse grinding blade for coarsely grinding the rice material stirred in the closed container. In this way, the rice gel is produced by finely pulverizing the paste obtained by the coarse pulverization in the pulverizing section, and therefore, the pulverizing load of the pulverizing section in which the throughput is limited can be further reduced as compared with the above-mentioned heating and stirring section, and the production efficiency can be further improved. Further, by reducing the crushing load in the crushing section, the frictional heat applied to the crushing section can be further reduced, and a rice gel of further high quality can be produced.

The rice gel production system according to the present invention is characterized in that the heating/stirring unit has a configuration including: a scraping type stirring blade which rotates in the closed container and stirs the rice raw material while scraping off deposits on an inner circumferential surface of the closed container; and a heating unit that heats an outer peripheral surface of the sealed container.

According to the above configuration, the heating/stirring section may be a scraping type heating/stirring device that heats the outer peripheral surface of the sealed container by the heating section while scraping off the deposits on the inner peripheral surface of the sealed container by the scraping type stirring blade. By using such a scraping type heating and stirring apparatus, it is possible to prevent the adhesion of the burnt coke on the inner peripheral surface of the closed vessel due to continuous heating for a long time, and to avoid the quality degradation due to the burnt coke.

The rice gel production system according to the present invention has a configuration of the 4 th feature in that the pulverization unit includes: a rotor having cutting and crushing teeth formed on an outer peripheral surface thereof and rotationally driven around an axis; and a sleeve that surrounds the outer peripheral surface of the rotor with a gap therebetween through which the paste passes.

According to the above configuration, the crushing unit may be a rotor type crushing device configured such that the paste can pass through: and a gap formed between an outer peripheral surface of the rotor, on which the shearing and crushing teeth are formed, and an inner peripheral surface of a sleeve surrounding the outer peripheral surface. By using such a rotor type pulverizing apparatus, the gelatinized material can be finely pulverized in a short time, so that the generation of scorch due to frictional heat generated during pulverization can be suppressed, and the gelatinized material can be finely pulverized, whereby high-quality rice gel can be obtained in a short time.

The rice gel production system according to the present invention has a 5 th feature in that the rice gel production system includes: and a closed conveying section for conveying the paste discharged from the heating and stirring section to the pulverizing section without contacting the paste with the atmosphere.

According to the above configuration, the rice material is heat-sterilized in the heating and stirring unit, and then a paste is produced. Further, since the paste thus produced is a slurry-like fluid, the paste discharged from the heating and stirring section through a pipe can be conveyed by a pump to the pulverizing section without being exposed to the atmosphere. Thus, if the rice gel is produced by finely pulverizing the gelatinized material in a substantially sterile state in the pulverizing section, the rice gel can be commercialized in a state in which the rice gel can be managed at normal temperature even when the heat sterilization treatment for the rice gel is omitted.

Drawings

Fig. 1 is a schematic configuration diagram of a rice gel production system according to embodiment 1.

Fig. 2 is a schematic configuration diagram of a rice gel production system according to embodiment 2.

Detailed Description

[ 1 st embodiment ]

Next, embodiment 1 of a rice gel production method and a rice gel production system according to the present invention will be described with reference to fig. 1.

The rice gel production system shown in fig. 1 (hereinafter, sometimes referred to as the present system) is configured as a system including: the rice gel RG can be produced from the rice material R0 by heating the stirring device 20 (an example of the heating and stirring section) and the pulverizing device 40A (an example of the pulverizing section 40). The heating and stirring device 20 is configured to be able to execute: a heating and stirring step of heating the rice material R0 added with water in the closed vessel 21 while stirring the same to obtain a paste R1. The crushing apparatus 40A is configured to be able to execute: a pulverization step of pulverizing the gelatinized material R1 obtained in the heating and stirring step by the heating and stirring device 20 to obtain a rice gel RG. In addition, in the present system, as the rice raw material R0, there can be used: polished rice or brown rice after washing or soaking is appropriately performed.

The method of loading the rice material R0 in the present embodiment employs a so-called air conveyance method in which the rice material R0 loaded from the hopper 10 into the conveyance line 16 is conveyed into the closed vessel 21 of the heating and stirring apparatus 20 by an air flow generated by the fan 15. However, the rice material R0 may be conveyed by another method.

The heating and stirring device 20 is provided with: and a scraping type stirring blade 22 which rotates around a vertical shaft in the closed container 21 by using a motor 24 arranged at the center of the ceiling surface of the closed container 21 as a power source. The scraping blade 22 is provided with a scraping plate 22a, and the scraping plate 22a is biased toward the inner circumferential surface 21a of the closed casing 21 in a state where an edge portion thereof is in contact with the inner circumferential surface 21a of the closed casing 21. Further, the heating and stirring device 20 performs a so-called stirring process as follows: the scraping/stirring blade 22 is rotated in the closed vessel 21 in which the rice material R0 added with water is stored. In this way, the scraping plate 22a sliding along the inner peripheral surface 21a of the closed casing 21 scrapes off the attached matter attached to the inner peripheral surface 21a, and the rice material R0 in the closed casing 21 can be stirred.

The heating and stirring device 20 includes: a heating jacket 27 (an example of a heating unit) surrounding the entire outer peripheral surface of the closed casing 21. The heating and stirring device 20 is configured to: the outer peripheral surface of the closed vessel 21 is heated so that a so-called heating process in which the heating medium S such as superheated steam is passed through the heating jacket 27 can be performed, and the rice material R0 in the closed vessel 21 can be indirectly heated.

Further, the heating and stirring device 20 is provided with: a rough grinding fin 25 rotatable around a vertical axis is provided near the bottom of the sealed container 21 using a motor 26 disposed at the center of the bottom of the sealed container 21 as a power source. The heating and stirring device 20 can appropriately perform the rough grinding of the rice material R0 in the closed casing 21, so-called rough grinding, in which: the coarse grinding fin 25 is rotated near the bottom of the closed vessel 21 where the rice raw material R0 added with water is stored.

In the heating and stirring step performed by the heating and stirring apparatus 20 configured as described above, the water W and the rice material R0 at predetermined temperatures are charged into the closed vessel 21 at a predetermined ratio in a state where the scraper blades 22 are rotated at a relatively low speed of, for example, about 34rpm, and the stirring process is started. Further, the heating process is started by starting the supply of the heating medium S such as superheated steam to the heating jacket 27 of the heating and stirring device 20, and this state continues for a predetermined time. Then, inside the closed casing 21, the following are present: the mixed liquid of water W and the rice material R0 was stirred while being indirectly heated.

In the heating and stirring step of the present embodiment, for example, the liquid mixture in the closed vessel 21 is boiled (100 ℃) for about 10 minutes, and this state is maintained for 10 minutes.

Then, by heating the mixed liquid of water W and the rice raw material R0 stirred in the closed vessel 21, it is possible to produce: the starch component contained in the rice material R0 is gelatinized and gelatinized, and is referred to as gelatinized product R1. The paste R1 thus produced was: the inside of the closed vessel 21 of the heating and stirring apparatus 20 is kept at a high temperature for a predetermined time to be heat-sterilized. In the heating and stirring step, the rice material R0 is heated while being stirred to produce a paste R1, and therefore the paste R1 is: a slurry-like fluid containing rice grains which are broken to some extent.

In the present embodiment, the temperature of the water W charged into the closed casing 21 is 80 ℃ hot water in consideration of the problems of improving the water-immersion property of the rice material R0 and shortening the heating time, but the temperature of the water W may be appropriately changed.

In the pretreatment of the rice material R0 charged into the closed container 21, when brown rice is used as the rice material R0, the soaking time of brown rice is desirably set longer because the soaking property of brown rice is lower than that of polished rice as the rice material R0. For example, the soaking time in the case of using polished rice as the rice material R0 may be set to about 1.5 hours, and the soaking time in the case of using brown rice as the rice material R0 may be set to about 4 hours.

The weight ratio of the water W and the rice raw material R0 charged into the closed casing 21 can be appropriately set. For example, if the weight ratio of the water W to the weight of the rice raw material R0 is set within the range of 1/4 to 1/2, the parameters indicating the quality such as viscosity and elasticity of the finally produced rice gel RG can be set within appropriate ranges.

In the heating and stirring step, the outer peripheral surface of the closed casing 21 can be heated by the heating jacket 27 while the deposits on the inner peripheral surface 21a of the closed casing 21 are scraped off by the scraping type stirring vanes 22. This prevents the adhering matter adhering to the inner peripheral surface 21a of the closed casing 21 from being heated continuously for a long time and causing the adhering matter to be burnt to hang on the wall, thereby avoiding the deterioration of the quality due to the burnt matter.

In a state where the paste R1 is left in the closed casing 21 during or after the heating and stirring step, the following steps are appropriately performed: for example, coarse grinding processing in which the coarse grinding fins 25 are rotated at a relatively high speed of about 1800 rpm. In addition, according to the rough grinding process, the rice grains gelatinized in the gelatinized material R1 are roughly ground to an appropriate size, and therefore, the grinding load in the grinding device 40A described later can be reduced.

Further, when the coarse crushing blade 25 is rotated at a high speed to perform the coarse crushing process due to, for example, a low water content of the gelatinized material R1 in the closed vessel 21, there is a possibility that bubbles are generated in the gelatinized material R1, and the bubbles may be a source of low quality of the rice gel RG finally produced. In this case, it is possible to adopt: measures such as reducing the rotation speed of the rough grinding fins 25 in the rough grinding process or omitting the rough grinding process.

The paste R1 obtained in the heating and stirring step performed by the heating and stirring apparatus 20 described above is: a slurry-like fluid. Thus, after being sent out from the bottom of the closed casing 21 to the transfer line 31, the mixture is transferred to the pulverizing device 40A in the next step through the transfer line 33 by the uniaxial eccentric screw pump 32 called a "single screw pump", for example. That is, the transport pipes 31 and 33 and the pump 32 are: the pasted material R1 discharged from the heating and stirring device 20 is conveyed to and functions as the closed conveying section 30 of the crushing device 40A without being exposed to the atmosphere. Accordingly, the gelatinized material R1 that has been heat-sterilized by the heating and stirring device 20 is conveyed to the crushing device 40A without coming into contact with the atmosphere.

In the present embodiment, although the closed type conveying section 30 is used, the conveying mechanism of the paste R1 may be appropriately changed, and the paste R1 may be conveyed to the crushing apparatus 40A by a conveyor or the like opened to the atmosphere, for example.

The crushing apparatus 40A includes: a rotor 41 rotationally driven around a horizontal axis by a motor 42 as a power source. The rotor 41 is formed in a conical shape, and includes: an outer peripheral surface 41a having an inclination angle equal to the rotation axis, the outer peripheral surface 41a having: and a shearing and crushing tooth formed by a groove part extending along the rotation axis. Further, the crushing apparatus 40A is provided with: and a sleeve 43 surrounding the outer peripheral surface 41a of the rotor 41 with a gap 44 having a predetermined width therebetween. That is, the sleeve 43 is formed in a bottomed cylindrical shape with the distal end side (left side in fig. 1) of the rotor 41 as a bottom surface, and the inner peripheral surface 43a is formed as follows: a conical trapezoidal shape facing the outer peripheral surface 41a of the rotor 41 with a gap 44 therebetween.

That is, a gap 44 is formed between an outer peripheral surface 41a of the rotor 41 that is rotationally driven and has the shear grinding teeth and an inner peripheral surface 43a of the sleeve 43 that surrounds the outer peripheral surface 41 a. The pulverizer 40A is configured to: a rotor type pulverizing device for pulverizing the paste R1 so that the paste R1 passes through the gap 44.

In the pulverizing step performed by the pulverizing device 40A configured as described above, the paste R1 conveyed by the pump 32 is supplied from the bottom center of the sleeve 43 toward the gap 44 while the rotor 41 is rotated at a high speed of, for example, about 3600 rpm. The gelatinizer R1 would then pass: a gap 44 is formed between the outer peripheral surface 41a of the rotor 41 that is rotationally driven and the inner peripheral surface 43a of the sleeve 43 that is stopped. By the relative movement of the shearing and crushing teeth formed on the outer peripheral surface 41a of the rotor 41, a shearing force is applied to the rice grain R1, and the rice grains contained in the rice grain R1 can be finely and finely crushed in a short time. The gelatinized material R1 finely pulverized by passing through the gap 44 is sent out from the pulverizing apparatus 40A to the conveying line 46 as rice gel RG.

Further, since the rice gel RG discharged from the crushing apparatus 40A to the conveying line 46 has a temperature close to the boiling point (100 ℃), bumping may occur with rapid pressure reduction. In this case, the occurrence of bumping can also be suppressed by providing a throttling portion or the like in the conveyance duct 46 and applying back pressure to the rice gel RG fed from the crushing apparatus 40A.

The rice gel RG sent out to the conveying line 46 is stored in the closed bag B in a subdivided manner by a bag-in-box packaging apparatus 60, for example, and shipped.

In the present system, the gelatinized material R1 which has been subjected to heat sterilization by the heating and stirring apparatus 20 is passed through the crushing apparatus 40A in an aseptic state without being exposed to the atmosphere to be a rice gel RG and is contained in the closed bag B, and therefore, the heat sterilization treatment for the rice gel RG can be omitted.

[ 2 nd embodiment ]

Embodiment 2 of a rice gel production method and a rice gel production system according to the present invention will be described with reference to fig. 2.

The present embodiment differs from embodiment 1 described above only in the following 2 points, that is: the rice gel processing apparatus includes a crushing unit 40 having a different form from the crushing unit 40A of embodiment 1, and a heat sterilization device 50 for applying heat sterilization to the rice gel RG. Accordingly, in the following description, the same components as those in embodiment 1 are denoted by the same reference numerals in the drawings, and detailed description thereof may be omitted.

The rice gel production system shown in fig. 2 (hereinafter, sometimes referred to as the present system) includes: the heating and stirring device 20 (an example of the heating and stirring section) and the pulverizing section 40 are configured as a system for producing a gel-like rice gel RG from the rice material R0. The heating and stirring device 20 is configured to be able to execute: a heating and stirring step of heating the rice material R0 added with water in the closed vessel 21 while stirring the same to obtain a paste R1. The crushing unit 40 is configured to be able to execute: a pulverization step of pulverizing the gelatinized material R1 obtained in the heating and stirring step by the heating and stirring device 20 to obtain a rice gel RG. In addition, in the present system, as the rice raw material R0, there can be used: polished rice or brown rice after washing or soaking is appropriately performed.

As the crushing section 40, although: a rotor type pulverizing apparatus similar to the pulverizing apparatus 40A (see fig. 1) described in embodiment 1 above, but the pulverizing unit 40 of the present system is configured to: known stone mortar type grinding apparatus 40B. That is, the grinding device 40B is configured to: the rice gel RG can be produced by finely pulverizing the paste R1 by the shearing force generated when the paste R1 supplied from the heating and stirring device 20 passes through the gap between the upper and lower mortar parts which are relatively rotatable.

For example, in the case where the milling unit 40 exposes the paste R1 to be milled to the atmosphere as in the milling device 40B, it is desirable to subject the rice gel RG obtained after milling to a heat sterilization treatment. Therefore, the present system is configured to: the rice gel RG obtained by the grinding device 40B is subjected to heat sterilization by the heat sterilization device 50, and is then stored in the closed bag B in a subdivided manner by the packaging device 60.

The heat sterilization device 50 is constituted by a so-called scraped heat exchanger, for example. That is, in the heat sterilization apparatus 50, the cylindrical conveyance space 51 through which the rice gel RG passes is provided with: a scraping wing 52 which is rotationally driven around the horizontal axis by using a motor 54 as a driving source and scrapes rice gel RG attached to the outer peripheral wall surface of the conveying space 51. In addition, provided are: and a heating jacket 53 surrounding the entire outer peripheral surface of the conveying space 51. The heat sterilization apparatus 50 is configured to: the outer peripheral surface of the conveying space 51 is heated so that a so-called heat treatment in which a heat medium S such as superheated steam is passed through the heating jacket 53 can be performed, and the heat sterilization treatment is performed so that the rice raw material RG passed through the conveying space 51 can be indirectly heated.

In the heat sterilizer 50, the rice gel RG adhered to the outer peripheral wall surface of the conveying space 51 heated by the heating jacket 53 is always scraped by the scraping wings 52. Accordingly, the adhered matter of the rice gel RG can be prevented from being burnt and hanging on the wall due to continuous heating for a long time, and the quality degradation caused by the burnt can be avoided.

As described above, when the rice gel RG is subjected to the heat sterilization treatment, it is considered that the following cases occur: the gelatinized starch is heated again, and the breakage of starch particles is promoted, and the viscosity and elasticity of the obtained rice gel RG are slightly lowered. In this case, the heating conditions in the heat sterilization treatment and the like may be adjusted so that the degree of slight change in the viscosity and elasticity of the rice gel RG falls within the allowable range. In the case where the rice gel RG is subjected to the heat sterilization treatment, the heat sterilization treatment or reheating treatment for the paste R1, which is a semi-finished product of the heat stirring apparatus 20 or other parts, may be omitted.

[ other embodiments ]

Other embodiments of the present invention will be described. The configurations of the embodiments described below are not limited to the case of being used individually, and may be applied in combination with the configurations of other embodiments.

(1) In the above embodiment, polished rice or brown rice was used as the rice material R0, but instead of this, rice bran may be used as the rice material R0, and rice gel RG may be produced from the rice bran.

(2) In the above embodiment, the heating and stirring device 20 having the coarse pulverizing wings 25 is used, but when the coarse pulverizing process using the coarse pulverizing wings 25 is omitted, the heating and stirring device 20 not having the coarse pulverizing wings 25 may be used.

(3) In the above embodiment, the heating and stirring device 20 is configured to: the rice material R0 is stirred while the adhering matter adhering to the inner peripheral surface 21a of the closed vessel 21 is scraped off by the scraping plates 22a of the scraping stirring vanes 22. However, it may be configured such that: for example, the rice material R0 is stirred by a stirring blade of another form, as in the case of omitting the scraping plate 22a and the like.

(4) In the above embodiment, the rotor type pulverizing apparatus 40A or the grinding apparatus 40B is used as the pulverizing section 40, but it is also possible to adopt: a pulverization device for pulverizing the gelatinized material R1 in another manner. In the above embodiment, the paste R1 is pulverized by the one-stage pulverizing section 40, but the paste R1 may be pulverized by 2-stage or more pulverizing sections 40.

Industrial applicability of the invention

The invention is suitable for use in: a rice gel production system and a rice gel production method which can omit a rice cooking process for obtaining rice by cooking or steaming a rice material in advance and can produce high-quality rice gel at low cost and high efficiency.

Description of the figures

20 … heating and stirring device (heating and stirring part); 21 … sealing the container; 21a … inner peripheral surface; 22 scraping type stirring wings; 25 … coarse crushing wing; 30 … sealed conveying part; 40 … grinding device (grinding part); 41 … rotor; 41a … outer circumferential surface; 43 … a sleeve; 44 … gap; r0 … rice feedstock; r1 … paste; RG … rice gel; w … water.