JPH0620395Y2 - Grain pressure flaking equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a device for producing flattened flakes as a livestock mixed feed by converting the grain raw material into alpha, and more specifically, the grain raw material in a service tank. The present invention relates to an apparatus for producing pressure-pressed flakes of grain provided with means for efficiently preheating.

[Conventional technology]

As is well known, in the case of mixed feed for livestock such as cattle and pigs, various processing is applied to achieve each purpose. Especially, in the case of unprocessed grain starch such as corn, its digestibility In order to increase the digestibility by converting the grain raw material into alpha and increase the protein utilization rate, it is pressed and processed into flakes.

A device shown in FIG. 3 is conventionally known as this type of device.

That is, a grain tank conveyed by a conveyor is charged, and a service tank 1 provided with a screw conveyor 2 rotatably provided in the vicinity of the bottom, a fixed amount rotary feeder 3 and an upper rocker valve 4 below the service tank 1. And a transfer mechanism 6 disposed therein, and a pressure can 5 in which the grain raw material from the service tank 1 is cooked under pressure steam, and a lower part below the pressure can 5. A press roll machine 9 connected via a rocker valve 7 and a de-cylinder 8 for flattening steamed grains into flakes, and a flattening roll machine 9 connected to the flat roll machine 9 for drying and cooling the flaked raw material. A dry cooler 10 is provided, the de-cylinder 8 and the service tank 1 are connected by a pipe 12 via a blower 11, and the exhaust steam separated in the de-cylinder 8 is used for preheating grain raw materials. That it was way are known.

[Problems to be solved by the invention]

By the way, as conditioning as a pretreatment process in flattening flakes of grains, the temperature of the grains at which the gelatinization starts is rapidly started from about 80 ° C, so the temperature of the core of the grains should be kept at 80 ° C as much as possible. You have to make it above.

Normally, the grain raw material is heated from the room temperature to a temperature near the temperature of the steam held in the pressure can 5, but since the low temperature portion is sent to the pressing roll machine 9 as it is during the temperature raising process, it is sufficiently alpha. Quality flakes cannot be obtained.

In the conventional device, the exhaust steam of the de-cylinder 8 is introduced into the service tank 1 to be used for preheating the grain raw material.
With the exhaust steam from the de-cylinder, the grain raw material having a product temperature of about 15 to 20 ° C. cannot be heated to about 80 ° C. at which the alpha conversion is started, and therefore, the temperature of the pressure can 5 during the heating process is increased. The low temperature part is sent to the flattening roll machine 9 as it is,
There was a problem that good quality flakes could not be obtained.

The present invention has been made in view of such conventional problems, and an object thereof is to efficiently and sufficiently preheat grain raw materials in a service tank.
Therefore, it is an object of the present invention to provide an apparatus capable of producing high-quality flakes with sufficiently promoted alpha conversion.

[Means for solving problems]

To this end, the present invention starts an upper limit level switch 20 for stopping the supply of the grain raw material and the supply of the grain raw material above and below the appropriate level parts of the service tank 1 in the grain pressure flattening apparatus. A lower limit level switch 21 is additionally provided, and a blow pipe 22 having a large number of downward steam blow holes 23 is air-tightly provided below the lower limit level switch 21 in the service tank 1, and the blow pipe 22 is provided. The extended end of 22 is connected to a boiler 26 via a solenoid valve 24 and a pressure reducing valve 25, and steam generated by the boiler 26 is used for upper and lower limits.
The blow pipe 2 is operated by operating the two level switches 20 and 21.
2 is always buried in the grain raw material, and is blown into the grain raw material through the downward steam blowing hole 23.

[Action]

In the manufacturing apparatus according to the above configuration, the saturated steam generated by the boiler 26 is hermetically sealed in the service tank 1 via the pressure reducing valve 25 and the solenoid valve 24, and has two level switches for the upper limit and the lower limit. The blow pipe 22 which is always buried in the grain material during operation by the operation of 20 and 21.
It is blown from many downward blow holes 23 of the grain raw material, and the gelatinization of the raw material of the grain is started even up to the core of the grain raw material.
It is sufficiently preheated to 0 ° C. and efficiently preheated, and then sent to the next pressure can 5.

〔Example〕

 Hereinafter, embodiments will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the device of the present invention is characterized in that the service tank is provided with a preheating means for the grain raw material, and other structures are the same as those of the conventional device. The same parts as the conventional device are given the same numbers,
A duplicate description will be omitted.

In the figure, the service tank 1 is provided with an upper limit level switch 20 for stopping the supply of grain raw material at the upper part thereof and a lower limit level switch 21 for starting the supply of grain raw material at the lower part of the level switch 20. At the same time, in the service tank 1 below the lower limit level switch 21, a blow-in pipe 22 having a large number of downward steam blow-in holes 23 is provided in an airtight manner, and the extended end of the blow-in pipe 22 is a solenoid valve 24. And the steam generated by the boiler 26, which is connected to the boiler 26 via the pressure reducing valve 25, is always buried in the grain material during operation by the operation of the two upper and lower level switches 20 and 21. Tube 2
It is blown downward into the grain raw material through the blowing hole 23 of No. 2 and the grain raw material is preheated to about 80 ° C. at which the gelatinization is started.

[Effect of device]

Therefore, according to the present invention, in the grain raw material in the service tank 1, the downward direction of the blow pipe 22 which is always buried in the grain raw material during the operation by the operation of the two upper and lower level switches 20 and 21. Since the steam from the boiler 26 is blown through the large number of blowing holes 23, the steam does not escape to the outside of the grain raw material and is extremely efficient, and the gelatinization is started sufficiently over the core portion.
A flake product of better quality than before, which is preheated to about 0 ° C., is sufficiently provided with a residence time in a later pressure can, and is sufficiently promoted to be pregelatinized, is obtained.

Further, since the service tank 1 has already been sufficiently preheated, the capacity of the pressurizing can can be reduced, and the miniaturization of the pressurizing can can reduce the size of the entire apparatus.

[Brief description of drawings]

FIG. 1 is a float sheet showing an example of a pressurizing and flaking production apparatus according to the present invention, FIG. 2 is a schematic sectional view showing an essential part of the present invention, and FIG. 3 is a conventional float sheet. 1 ... Service tank 5 ... Pressurized can 9 ... Flattening roll machine 10 ... Drying / cooling machine 20 ... Upper level switch 21 ... Lower level switch 22 ... Steam injection pipe 23 ... Downward steam Blow hole 24 ... Solenoid valve 25 ... Pressure reducing valve 26 ... Boiler

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. An apparatus for steaming grain raw material from a service tank under pressured steam in a pressure can to convert it into alpha, and then flattening it through a flattening roll machine and a drying cooler. An upper limit level switch 20 for stopping the supply of grain raw material and a lower limit level switch 21 for starting the supply of grain raw material are attached above and below an appropriate level portion of the service tank 1, and the lower limit in the service tank 1 is provided. The lower part of the level switch 21 for
A blow-in pipe 22 having a large number of downward steam blow-in holes 23 is airtightly provided laterally, and the extension end of the blow-in pipe 22 has an electromagnetic valve 2
4 and the pressure reducing valve 25, and is connected to the boiler 26,
The steam generated by the boiler 26 is operated by the two upper and lower limit level switches 20, 21 so that the blow-in pipe 22 is always buried in the grain raw material. An apparatus for the production of pressure-pressed flakes for grains, which is characterized in that it is blown more.