JPS6255831B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a method for coating food grains such as nuts, starch puffed products, and spherical cheese in a multilayered manner with a coating liquid such as a sugar solution and a food powder such as starch. Conventionally, a rotary pan is usually used to coat food particles in multiple layers with a coating liquid and food powder. However, in this method, food grains are placed in a rotating pot and coated alternately with a coating liquid and food powder.The food grains are first sprayed or sprinkled with the coating liquid, and then the food grains are rolled to coat them. After the liquid has been uniformly coated, the food powder is spread, and after the food powder has adhered to the food grains and is evenly coated, the coating liquid is again sprinkled or sprayed, and the process is repeated. It is not possible to cover both at the same time. Therefore, this method requires a long coating time, and if the coating liquid and food powder are not coated at a certain ratio, the coating layer on the food grains tends to become uneven, and it takes many years to coat the food particles uniformly in multiple layers. There were drawbacks that required experience. The present invention is intended to solve the above-mentioned drawbacks of the conventional method of coating food grains using a rotary pan. Food grains are stored in an annular tubular container which is formed into an endless annular shape and has a powder sieve portion formed with a large number of small holes of an appropriate area at predetermined locations across the lower outer wall surface and the bottom surface, and the container is By vertically vibrating and eccentrically rotating the food grains, the food grains are circulated, a coating liquid is supplied immediately after they pass through the powder sieve portion during the circulating movement, and then food powder is supplied, thereby producing a food product. It consists in coating grains with food powder in multiple layers. The present invention has a powder sieve portion consisting of a large number of small holes with an appropriate area extending over the lower outer wall surface and the bottom surface at a predetermined location in the annular tubular container whose upper portion is opened with a constant width. This prevents the formation of a coating layer with uneven unevenness caused by coating the powder raw material with the coating liquid. Food grains such as nuts, starch puffed products, spherical cheese, etc. are circulated in a spiral motion in the container, and a coating liquid such as water or sugar solution is then applied to appropriate locations immediately after the location where the large number of pores are formed. This is a method in which food powder such as starch, wheat flour, rice flour, etc. is supplied using a method of uniformly coating food grains with food powder in multiple layers without requiring many years of skill. Next, an embodiment of the method of the present invention will be described with reference to the drawings. As an apparatus for carrying out the present invention, an annular tubular container 1 as shown in FIG. 1 is used which is entirely annular and whose upper part is open to a certain width. The container 1 is made of a material such as metal or hard plastic, and has an opening at the top at about 90 degrees to the central axis, that is, about 1/4 of the width of the cross section of the annular tube. This upper opening has the above opening angle with respect to the central axis.
If the angle is greater than about 90 degrees, the capacity of the food particles in the annular tubular container 1 will become smaller, and the curvature toward the center of the upper outer wall, which helps the circular rotation of the food particles, will become smaller, impeding the smooth movement of the food particles. This is not desirable because it means that the If the angle is less than about 90 degrees, the movement of food grains will not be affected, but the supply area of coating liquid and food powder (described later) will become smaller, making it difficult to uniformly supply the specified amount per hour, and Compared to conventional food granule coating devices such as the above, the moisture of the coated food granules dissipates more, and therefore the excellent advantage of the present invention, which is that the drying process performed after the coating process can be shortened, is lost. Become. As mentioned above, since the upper part of the annular tubular container 1 is opened with a constant width of about 90 degrees, the tube wall of the container 1 has an expanse of about 270 degrees with respect to the central axis. This tube wall of around 270 degrees facilitates the circular movement of food grains. The annular tubular container 1 constructed in this manner is attached to a rotating shaft 7 of a vibrator 6 which is rotated via a rotary pulley 2 by driving a drive motor 3.
The vibrator 6 causes vertical vibration due to the rotation of the lower weight 5, and this vibration causes the container 1, which is supported by a large number of springs 9 arranged circularly on the pedestal 12, and the container housed therein to vibrate. The product grains in the product vibrate up and down. The lower weight 5 attached to the lower part of the rotating shaft 7 of the vibrator 6 is installed below the center of gravity of the entire body consisting of the container 1 and the vibrator 6, which are supported by the springs 9 and 4. Vertical vibration is applied to the entire container 1 and vibrator 6 supported above the spring 4. The amplitude of this vertical vibration can be adjusted freely by increasing or decreasing the weight of the lower weight 5. On the other hand, an upper weight 8 is attached to the upper part of the vibrator 6, and this upper weight 8 is located at the center of gravity of the entire body consisting of the container 1 and the vibrator 6 supported by a spring 9, and its rotation causes the entire body of the container 1 and the vibrator 6 to be moved. Perform eccentric rotational movement. The degree of eccentricity can be freely adjusted by adjusting the weight of the lower weight 5. Due to the vertical vibration caused by the lower weight 5 and the eccentric movement caused by the upper weight 8, the product grains in the tubular container 1 circulate within the tubular container 1 while making a spiral movement. On the other hand, by increasing the eccentric angle between the upper weight 8 and the lower weight 5, it is also possible to cause the product grains to move in a spiral manner within the container 1. Table 1 below shows the relationship between the weight of the upper weight 8 and lower weight 5 when a container with a volume of 220 is attached, the amplitude of vertical vibration, the period of rotational movement and spiral rotational movement, and the eccentricity angle is 20. It shows the weight of the upper and lower weights and the state of movement of the product grains at the same time.

[Table] Table 1 shows the relationship between the amplitude of vertical vibration, rotation period, and spiral rotation period when the upper weight is 3500 g and 3800 g, and the lower weight is 900 g and 2400 g. According to this, it can be seen that when the eccentric angle of the upper and lower weights is 20 degrees, the swing period becomes shorter as the weight of the upper weight increases, while the amplitude of vertical vibration increases as the weight of the lower weight increases. An annular tubular container 1 carried and operated as described above
As shown in FIGS. 1 and 2, a large number of small holes 10 with an appropriate area are formed over the lower outer wall surface and the bottom surface in a range extending approximately 20 degrees around the central axis of the annular tube of the container 1. A powder sieve section 11 having holes 10... is formed, and a spray gun 13 and a food powder dispersion device 15 are arranged toward the inside of the container 1 from above the opening at the top of the annular tubular container 1. ing. The spray gun 13 is configured to supply a coating liquid such as water or sugar solution from a pipe 14, and is disposed immediately behind the powder sieve section 11 in the direction of movement of food grains, and is placed at a constant interval from this. A food granule dispersing device 15 is arranged. Next, a multilayer coating method for food grains using the above-mentioned apparatus will be described. The arrow curves A and B in FIG. 2 indicate the locus of the spiral movement of the food grains inside the annular tubular container 1 described above, and the food grains are accommodated in the annular tubular container 1 brought about by the above-mentioned operating principle. The speed of the spiral movement of each food grain is almost constant in any part of the container, and the time for the food grain to pass through the coating liquid and food powder supply points can be changed by changing the supply area. It is possible to freely adjust the supply amount and keep the supply amount constant at all times. Also, because the food particles themselves rotate while rotating in this spiral swirling motion, the coating liquid and food powder are uniformly distributed. Therefore, for the above-mentioned reason, a coating layer is uniformly formed over the entire food grains housed in the annular tubular container 1. In order to uniformly coat the food grains housed in the annular container 1 alternately and uniformly with the coating liquid and the food powder, the food grains are spirally twisted approximately twice or more during one circulation in the annular container 1. It is preferable to make a circular movement. That is, depending on the diameter of the entire eccentric movement made up of the annular tubular container 1 and the vibrator 6, the food grains are usually moved about 3 to about 5 times during one circulation in the annular tubular container 1.
It is preferable that the food powder is coated more thoroughly by the spiral movement. Furthermore, a large number of small holes 1 with appropriate areas are formed across the lower outer wall surface and the bottom surface at predetermined locations of the annular tubular container 1.
The sieve part 11 consisting of 0 drops and removes the powder raw material that has been sprinkled in excess on the food grains, and the coating liquid is applied to the excess food powder by a coating liquid spraying device or a spreading device placed immediately after that. This is to prevent the formation of a non-uniform, uneven coating layer due to spraying or scattering. Further, the surplus food powder that has fallen onto the chute 16 from the sieving section 11 is sieved to remove food powder that has grown into large particles, and then is supplied into the hopper of the powder spreader 15 and reused. In the present invention, as described above, by forming a powder sieve portion consisting of a large number of small holes with an appropriate area over the lower outer wall surface and bottom surface of a predetermined location of the annular tubular container, the amount of spraying or dispersion of the coating liquid can be controlled. It is possible to form a good coating layer that is uniform and free of irregularities, not only when the amount of food powder is applied is appropriate, but also when the amount is slightly excessive. Therefore, it is not possible to uniformly coat food grains in multiple layers unless the coating liquid and food powder are coated at a constant ratio, and therefore conventional rotary machines require many years of experience to form a good multilayer coating. Unlike the case of coating food grains with a pot, it is possible to form a uniform multilayer coating layer without requiring any skill on the part of the operator.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of an example of an apparatus for carrying out the present invention, and FIG. 2 is a plan view illustrating the state of movement of food grains within an annular tubular container. 1... Annular tubular container, 3... Drive motor,
4, 9... Spring, 5... Lower weight, 6... Vibrator, 7... Rotating shaft, 8... Upper weight, 10... Small hole,
11...Powder sieve section, 13...Spray gun,
14... Piping, 15... Food powder spreading device.

Claims (1)

[Scope of Claims] 1. A powder sieve whose cross section is tubular with an open top, the whole is formed into an endless ring shape, and a large number of small holes with an appropriate area are bored at predetermined locations across the lower outer wall surface and the bottom surface. The food grains are housed in an annular tubular container having a part formed therein, and the food grains are circulated by vertically vibrating the container and eccentrically rotating, and the position of the powder sieve part is determined during the circulating movement. A method for coating food grains, which comprises supplying a coating liquid immediately after passing through the food grains, and thereafter supplying food powder to coat the food grains in a multilayered manner. 2. The method for coating food grains according to claim 1, which uses an annular tubular container with an open top having a width of about 1/4 of the cross section of the annular tube. 3. The method for coating food grains according to claim 1, wherein the food grains are rotated about twice or more during one circulation in the annular tubular container. 4. The method for coating food grains according to claim 1, which uses an annular tubular container in which the powder sieve portion is formed in a range extending approximately 20 degrees from the center of the annular tube.