JPH072106B2 - Stirring blade in rice liquefier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a stirring blade in a rice liquefaction apparatus for brewing sake, which produces a high-quality rice liquefaction liquid free from impurities.

2. Description of the Related Art Conventionally, the stirring blade used in the device for crushing raw rice is
Although stainless steel, which has abrasion resistance and corrosion resistance, is used, the iron content of stainless steel is separated into fine particles by the contact polishing action with the raw rice during grinding and stirring with such a stirring blade, and this iron content is combined with the acid. As a result, it becomes a divalent or trivalent iron oxide ion, which is mixed in the liquefied liquor of liquor to have a serious influence on the quality.

Therefore, the surface treatment method of JP-A-61-186483 is known as a method of coating a titanium film on the surface, but in such a coating method, a titanium film of only about several hundred liters is formed. However, there is a drawback that the titanium film is easily peeled off due to abrasion during shearing, especially in stirring and mixing in which the raw rice is sheared into fine particles.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention prevents the mixing of impurities from the stirring blade during contact between the raw rice and the stirring blade during granular stirring to increase the concentration of the liquefied rice liquor, and at high purity. It is intended to provide a stirring blade in the brewing rice liquefaction device to be manufactured.

(Structure of the Invention) Means for Solving the Problems In view of the above points, the present invention provides a brewing liquefaction apparatus for sake brewing in which a stirring shaft is rotatably installed in a liquefaction tank, and the stirring blade is fixed to the stirring blade. The blades are made of titanium which is a non-ferrous metal, and a stirring blade in a brewer's rice liquefaction device in which a cutout hole is formed is provided to solve the above drawbacks.

Effect In the present invention, when producing a liquefied liquid by stirring and mixing raw rice, charging water, and liquefying enzyme, while eliminating the contamination of impurities that affect the quality of the sake separated from the stirring blade,
The granules are sheared by the edges of the cutout holes.

EXAMPLE An example of the present invention will be described below with reference to the drawings. 1 is a liquefaction tank for liquefying raw rice, and heating / cooling nozzles 2, 2a ...
A liquefaction tank 1 equipped with a jacket 3 equipped with
A raw material inlet 4 is provided in the upper portion, and a processing liquid outlet 5 is provided in the lower portion.

Reference numeral 6 denotes a stirring shaft vertically rotatably installed in the central portion of the liquefaction tank 1. The upper end of the stirring shaft 6 projects from the liquefaction tank 1 and is connected to a stirring drive device 7, and in the liquefaction operation tank 1. The first and second stirring blades 8 and 9 formed of a material such as titanium, which is a non-ferrous metal, are fixed in two stages below the center of the stirring shaft 6 and located at the bottom of the liquefaction tank 1. Thus, the third stirring blade 10 formed of a material such as titanium which is a non-ferrous metal is fixed to the tip of the stirring shaft 6.

The stirring blades 8, 9, 10 have four plate-shaped main stirring blades 13, 13a ... In which a boss 11 fitted on the stirring shaft 6 is provided with cutouts 12, 12a ... The first and second stirring blades 8 and 9 are obliquely fixed, and four bosses 14 externally fitted to the stirring shaft 6 have centrifugally curved centrifugal stirring blades 15 having a tip-reducing diameter and having a centrifugal effect. The third centrifugal stirring blade 10 is formed by diagonally fixing 15a ....

Although the stirring blades 8 and 9 have been described as having two stages, they may have one to three stages, and the main stirring blades 13, 13a of the stirring blades 8 and 9 have cutout holes 12, 12a ... The triangular shape has been described, but a round shape or a square shape may be used, and the main stirring blades 13, 13a of the stirring blades 8, 9, 10 and the centrifugal stirring blade 1 may be used.
The number of each of 5, 15a ... Has been described as four, but two, three, etc. may be used.

Reference numeral 16 is a baffle plate made of a material such as titanium which is a non-ferrous metal. The baffle plate 16 is vertically installed on a side portion of the liquefaction tank 1 and has a steam supply pipe 17 for supplying steam therein. It is decorated.

The liquefied liquid is further improved by forming it with a material such as titanium which is a non-ferrous metal as a member used in a portion that directly contacts the raw rice such as the stirring blades 8, 9, 10 and the baffle plate 16 and the like. The quality of the non-ferrous metal can be improved, and the material of the non-ferrous metal is not limited as long as the material does not contain an iron component that seriously affects the taste of sake.

Next, the operation of the stirring blade in the rice liquefaction apparatus for brewing rice according to the present invention will be described. Raw material rice, charging water, and liquefying enzyme are put into the liquefaction tank 1 through the raw material inlet 4, and the stirring drive device 7 is operated to stir the mixture. The blades 8, 9 and 10 are rotated, and steam is blown in from the steam supply pipe 17 which is internally provided in the baffle plate 16 and the jacket 3
The liquefaction temperature is maintained by passing steam and cold water through the heating / cooling nozzles 2, 2a ... to the mixed liquid of the raw rice and the charged water, and the stirring blades 8 and 9 are obliquely fixed in the center of the liquefaction tank 1. Due to the fact that it is installed, it is sheared and flows downward, at the bottom of the liquefaction tank 1 it is sheared and flows outward due to the centrifugal effect of the stirring blades 10, and at the outer periphery of the liquefaction tank 1 it flows upwards. Then, it is swirled as a whole and agitated and mixed, and the edges of the cutout holes 12, 12a formed in the main agitating blades 13, 13a ... shear the particulate matter and the mixed solution to improve the efficiency. The stirring and mixing are carried out for a while, and the flow of the mixed solution is disturbed by the baffle plate 16 to cause convection to carry out the stirring and mixing for improving the efficiency.

〔The invention's effect〕

In short, the present invention relates to a brewing rice liquefaction apparatus in which a stirring shaft 6 is rotatably installed in the liquefaction tank 1 and stirring blades 8, 9, 10 are fixed to the stirring shaft 6, and the stirring blades 8, 9, 10 are provided. Since it is made of titanium, which is a non-ferrous metal, and cutout holes are drilled, even if the blade is worn due to contact with the raw rice, the entire blade is made of titanium. On the other hand, its life can be remarkably improved, and even if titanium is finely divided by the contact polishing action, since it does not contain iron, the raw rice, feed water, and liquefying enzyme are mixed by stirring to produce a liquefied liquid. In the production of liquor, it is possible to improve the quality (taste etc.) of liquor by eliminating the mixture of iron oxide ion impurities that affect the quality of liquor separated from the stirring blade, which is a great practical effect.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a sectional view of a liquefier, FIG. 2 is a plan view of a main stirring blade, FIG. 3 is a side view of the same, and FIG. 4 is a centrifugal stirring blade. And FIG. 5 is a plan view of the same. 1 liquefaction tank, 2 stirring shafts, 8, 9 and 10 stirring blades

Claims (1)

[Claims] 1. A brewer's rice liquefaction device in which a stirring shaft is rotatably installed in a liquefaction tank and the stirring blade is fixed to the stirring shaft, the stirring blade is made of titanium, which is a non-ferrous metal, and a cutout hole is formed. A stirring blade in a brewer's rice liquefaction device characterized by being drilled.