JP3109568B2 - Method and apparatus for producing sterilized food powder products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing a powdered food product, and more particularly to a method and an apparatus for producing a sterilized high-quality food powder product.

[0002]

2. Description of the Related Art Powdered food products such as buckwheat flour, spices and flour (hereinafter simply referred to as "powder products") depend on the season and region, while their consumption is processed into buckwheat and bread. It is needed for daily diet, as an additive for curry roux or ham and sausage, or directly, and its consumption is nationwide. As described above, since powder products have a time lag and a place lag in production and consumption, powder products such as buckwheat flour are mainly kept at the producer's hand until they are used after being produced and distributed. Will be saved. However, powdered products such as buckwheat flour, spices, and flour have a mold, a yeast, a microorganism, a bacterium, an egg of a pest, etc. already attached at the stage of production, that is, in the state of a powdered raw material, so that during the storage period. These grow to a non-negligible degree. For example, when raw noodles are manufactured from buckwheat flour stored in this way, it becomes raw noodles with poor shelf life, and even when boiled noodles are made from buckwheat flour, the core of the noodles is not heated, so the situation is Is the same. Ham and sausages to which the spices thus stored are added have poor shelf life. Therefore, at the time of shipment, the powdered raw material is sterilized to improve the quality, and is provided as a sterilized powdered product to a processor or a wholesaler.

[0003] In order to obtain a powder product sterilized in this way (hereinafter referred to as "sterile powder product"), a manufacturing method mainly using a so-called air flow sterilization method has been widely adopted. I have. In this method, a powdery raw material is put into an air flow pipe in which superheated steam is circulated, brought into contact with the superheated steam, and the high temperature is used to sterilize mold, yeast, microorganisms, and bacteria in the powdered raw material as much as possible. Is characterized by
The powdered raw material sterilized through this sterilization step is collected, separated from water vapor, and further cooled to obtain a final sterilized powdered product.

[0004] Further, in addition to the case where the sterilized powder product is traded alone, today, the value of the product is further increased by mixing predetermined different powder products, and a product suitable for a final product (hereinafter referred to as “sterilized mix”). In many cases, they are shipped after being adjusted to "powder products."
For example, regarding the case where the powdered raw material is buckwheat flour, besides shipping the sterilized buckwheat as it is, a state in which a predetermined amount of flour is mixed in advance for buckwheat ingredients directly consumed by consumers. In many cases, sterilized buckwheat flour is manufactured and shipped.

[0005]

However, when a sterilized powder product is obtained by a production method having a sterilization treatment step by the above-mentioned air flow sterilization method, the following problems are summarized. there were. That is, since the flow rate of the powdery raw material supplied into the airflow tube varies, superheated steam is used as a heating medium for sterilization in order to maintain the overall sterilizing effect. For this reason, the flavor and aroma are easily removed from the powdered raw material, and there is no opportunity to return to the powdered raw material once the powder has been removed, so that the flavor and aroma are important quality evaluation factors for powdered products such as buckwheat flour and spices. Significantly degrades quality. By using superheated steam without using general steam as the heating medium, it is possible to prevent the powder material from adhering and agglomerating due to the condensation of steam. In this regard, the quality of the raw materials is also reduced, the weight of the product is reduced, and a loss is caused. For example, in the case of a powder raw material having a moisture value of 13% to 15.5%, the moisture value of the sterilized powder product is 5% to 8%.
Since dew condensation occurs in the piping system of the processing apparatus, the powder raw material adheres and grows. As a result, contaminants such as microorganisms and bacteria (hereinafter referred to as "contamination") in the processing apparatus.
Is caused. In particular, at the end of the operation of the apparatus, a large amount of drain water is generated in the piping system due to the condensation of water vapor, which promotes the degree of contamination. For this reason, conventionally, it is necessary to periodically stop the operation of the apparatus, disassemble the apparatus, and clean and clean the piping system. Therefore, the productivity is not good and the maintenance is complicated.
The powder raw material heated to a high temperature is usually cooled by a drum-type paddle rotary cooler before it is finally packed in a bag.However, as described above, dew condensation occurs on the inner wall and the paddle of the drum. Powder material adheres and grows. Therefore,
Contamination may also enter the cooling machine. In addition, the cooling effect of the cooler is reduced due to the adhesion and growth of the powder raw material, and the sterilized powder product is packed in a fresh state in a bag state. Therefore, coupled with the fact that contaminants in the cooler are apt to be mixed into the product bag, the quality of the product deteriorates during the storage period.

[0006] In the conventional sterilization treatment, a method of putting a powder raw material in a container and heating the container, that is, a method of sterilizing the powder raw material by indirect heating, is also partially performed. I have. However, in this case, if the temperature is controlled on the basis of the raw material existing in the center of the container, the raw material existing near the container wall surface is overheated, and the same inconvenience as in the above-mentioned air flow sterilization method occurs. Conversely, if the raw materials existing near the wall of the container are used as a reference, the raw materials in the center of the container will be insufficiently heated, and the sterilization rate will be reduced. In addition, there is a problem that productivity is reduced due to batch processing.

[0007] There have also been various problems in the production of sterilized mixed powder products. That is, in the past, in order to obtain this sterilized mixed powder product, the worker used a batch system using an open-type mixer, so that the working environment was poor, the productivity was low, and a high Even if a sterilized powdered product of a quality (for example, sterilized buckwheat flour) is used, it may be contaminated during the mixing operation of a different type of powdered product (for example, flour), that is, there is a risk of secondary contamination. Further, since the management of the color tone and the like of the sterilized mixed powder product depends on human eyes, the quality of the sterilized mixed powder product varies, and improvement in this aspect has been demanded.

The present invention has been made in view of the problems the prior art has, a first aspect of the present invention, closed system processing line production of high quality sterile mix powder products It is an object of the present invention to provide a method for producing a sterilized mixed powder product, which can be automated by using the method and can improve productivity and completely prevent secondary contamination. Further, the invention according to claim 2 is a sterilized mixed powder product in which flavor and aroma are important quality evaluation factors in addition to the object of the invention according to claim 1 and are indispensable for daily eating habits. To provide a method for producing a sterilized mixed powder product which is suitable for the production of sterilized mixed buckwheat flour and which can be applied to the production of a sterilized mixed powder product having other similar quality characteristics and which is versatile. Aim. Furthermore, the invention according to claim 3 enables production of a high-quality sterilized mixed powder product to be automated in a closed processing line, thereby improving productivity and completely preventing secondary contamination. It is an object of the present invention to provide an apparatus for producing a sterilized mixed powder product. In addition, the invention according to claim 4 provides, in addition to the object of the invention according to claim 3, a color tone of a sterilized powder product or a sterilized mixed powder product of the target color tone without changing the production amount. An object of the present invention is to provide a manufacturing apparatus capable of automatically adjusting a product. Further, the invention according to claim 5 has the object of the invention according to claim 3 or 4 , and further comprises a device for producing a sterilized powder product or a sterilized mixed powder product capable of automatically cleaning a line in a closed system line. The purpose is to provide.

[0009]

In order to achieve the above object, an invention according to claim 1 is a step of supplying one or more kinds of powdery food materials in a fixed amount or mixing and supplying after mixing in a fixed amount. And a step of sterilizing the mixed powder raw material,
A step of collecting the powdered raw materials sterilized by the sterilization treatment while cooling, and a different powdered food product for food according to the amount of the sterilized powdered raw materials in the line between the sterilization processing step and the cooling assembly step. And a method for producing a sterilized food powder product comprising a step of removing foreign substances in the powdered raw material after cooling, wherein the step of sterilization treatment comprises:
After supplying one or more kinds of powdered raw materials between the twin screws in a sealed and heated environment, the compression / shear / heating action is performed by rotating the twin screws. Characterized in that: Therefore, according to this production method, it becomes possible to automate the production of a high-quality sterilized mixed powder product in a closed processing line,
It is possible to improve productivity and completely prevent secondary contamination.

The method for producing a sterilized mixed powder product according to the second aspect of the present invention is characterized in that the powder raw material is buckwheat flour and the heterogeneous powder product is wheat flour. This manufacturing method is indispensable for daily eating habits,
Suitable for the production of sterilized mixed buckwheat flour, which is a sterilized mixed powder product whose flavor and aroma are important quality evaluation factors, and applied to the production of other sterilized mixed powder products with similar quality characteristics It is possible and versatile.

[0011] Further, the apparatus for producing a sterilized mixed powder product according to the third aspect of the present invention comprises a plurality of feeders for supplying one or more kinds of powdery food raw materials in a fixed amount or for mixing and supplying after mixing in a fixed amount. A collecting pipe for concentrating, mixing and transferring all or one or more of the raw material powders for food supplied from the plurality of feeders, and a mixed powder for food supplied from the collecting pipe A twin-screw type sterilizer that sterilizes by applying compression, shearing, and exothermic effects while heating the raw material, and a powder raw material sterilized by the sterilizer is used for food in accordance with the amount of the raw material. A quantitative feeder for quantitatively mixing different kinds of powder products, a cyclone for cooling and condensing these mixed products, a separator for removing foreign substances in the sterilized powder product discharged from the cyclone, and a separator separated by the cyclone. Clean the air Characterized by comprising a dust collector for. Therefore, it is possible to automate the production of a high-quality sterilized mixed powder product in a closed processing line, thereby improving productivity and producing a sterilized mixed powder product capable of completely preventing secondary contamination. An apparatus can be provided.

Further, an invention according to claim 4, wherein, to detect a density difference between the two-axis fitted with a color meter with galvanometer the connecting pipe between the screw sterilizer and cyclone product hue which is set in advance, the It is characterized in that the supply amount of the food powder raw material product and / or the different food powder product is automatically adjusted according to the concentration difference. By installing such a galvanometer with a color tone meter, control and monitor the finished color of the sterilized powder raw material,
When there is a difference in shading from a preset color tone, the supply amount of raw materials can be changed appropriately according to the shading difference, so sterilization of a predetermined color tone without changing the production volume of the line Automatic adjustment can be performed so that a powder product is obtained, and productivity can be improved.

Further, the invention according to claim 5 is characterized in that a feeder for supplying a powdered raw material for food or a fixed-quantity feeder for supplying a different powdered food product and a dust collector are connected by a backwash pipe,
It is characterized in that the line is automatically washed in a closed system line including the backwash tube. By incorporating such a reverse cleaning system into the equipment, automatic cleaning can be performed after the operation is completed without disassembling the equipment, maintenance is easy, and switching can be done in a short time even when changing types. Becomes Therefore, the productivity can be improved by the improvement of the maintenance.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the present invention (claims 4 and 5).
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic explanatory view showing an embodiment of a method and an apparatus for producing a sterilized powder product related to the described invention). In FIG. 1, the powder raw material is stored in a raw material tank 1 for each product type.
It is cut off airtight by the rotary valve 2 located at the lower part. The operation of the rotary valve 2 is started or stopped by a signal from a level detector 3b provided in a sub-tank 3a of a fixed quantity feeder 3 provided on the downstream side. The powder raw material filled in the fixed-quantity feeder 3 is continuously supplied to a twin-screw sterilizer 5 described later in a preset amount.
The quantitative feeder 3 is preferably of a weight control type.
With the weight control method, when supplying multiple types of powder raw materials, it is possible to increase or decrease the total amount while maintaining the respective mixing ratios, or to adjust the mixing ratio while maintaining the total amount. It is.

The powder raw materials cut out from the respective quantitative feeders 3 pass through the individual chutes 3c and join at the collecting chutes 3d, and are in the “open” state during the production of sterilized powder products.
It is supplied to a twin-screw sterilizer 5 via a one-way switching valve 4. The powdered raw material supplied to the sterilizer 5 is sterilized by shutting off the atmosphere inside the sterilizer 5 and receiving a physical action and an exothermic action by a compressive / shear force under a heating environment necessary for the sterilization. The processed raw material powder is introduced into the air transport pipe 19 via the branch chute 6 and the stop valve 7 provided in the outlet chute 5a. When an abnormality occurs in the sterilizer 5, the branch chute 6 is switched so that the powder raw material being processed can be taken out to the collection box 40 outside the line.

The raw material powder supplied from the sterilizer 5 to the pneumatic transport pipe 19 is conveyed to the cyclone 11 by the air cleaned by the air filter 8 and collected by the cyclone 11. In addition, 9 is an automatic stop valve and 10 is a galvanometer. While being cooled while being transported in the pneumatic transport pipe 19 and descending in the cyclone 11, the powder raw material collected by the cyclone 11 and accumulated in the lower part of the cyclone 11 is supplied to the system by the rotary valve 12. Is quantitatively cut out while ensuring the airtightness of the sheet, and sent to the separator 13. After the separator 13 is checked for foreign matter, the bag is packed by the automatic bagging machine 14.
The air separated by the cyclone 11 is sent from the top to the dust collector 16 via the stop valve 15, and after the dust is removed by the dust collector 16, the air is discharged to the atmosphere from the blower 17. The automatic stop valves 9 and 15 are used in a "closed" state when cleaning the inside of the sterilizer 5 as described later. The galvanometer 10 is provided for the purpose of constantly monitoring the state of the sterilized powder raw material after the sterilization treatment conveyed in the air transport pipe 19, that is, whether or not there is any abnormality such as stagnant in the pipe. Color tone meter 1 to control and monitor the finished color of sterilized powder raw materials
8 is attached. Thus, when there is a difference in shading from a preset color tone, the selection of the raw material and the supply amount thereof are determined in accordance with the density to be corrected, and a command for performing the operation is issued to the lower part of the raw material tank 1. The color tone can be automatically adjusted by feeding back to the quantitative feeder 3.

The method and apparatus for producing a sterilized powder product are constituted as described above, and the twin-screw sterilizer 5
In this case, the atmosphere is shut off, and sterilization is performed by the physical action of compressive / shear force and the exothermic action under the heating environment required for sterilization, and then rapidly cooled while being conveyed by the pneumatic transport pipe 19. It is processed without deterioration of the flavor and odor which are the characteristics of the product, there is no decrease in moisture value, and there is no loss in weight. In addition, while the powder raw material is withdrawn from the raw material tank 1 by product type, the galvanometer 1 with the color tone meter 18 is attached.
0 to the line, this galvanometer 10 and raw material tank 1
If there is a difference with respect to a predetermined finished color by connecting to a sterilized powder of a predetermined color by controlling the supply amount of each powder raw material without changing the production amount of the line, It can be automatically adjusted to become a product. Similarly, the production amount can be automatically adjusted without changing the mixing ratio. Further, after the sterilized powder raw material is completely cooled, foreign matter is checked by the separator 13, so that there is no clogging of the separator 13 due to dew condensation, the size of the separator 13 can be reduced, and the generation of contamination can be prevented. it can. Furthermore, a special forced cooler such as a drum-type paddle rotary cooler that was required in the past is unnecessary, and of course there is no risk of adhesion of the sterilized powder raw material in the cooler due to condensation, There is no generation of contamination, and continuous operation of the apparatus is possible for a long time. Therefore, the production efficiency can be greatly improved.

Since the twin-screw sterilizer 5 according to the present invention has a self-cleaning action, there is no concern that contamination occurs during the production operation, and continuous operation is possible. If the unsterilized powdered raw material remains, the raw material is overheated during warming-up (preheating) of the sterilizer 5 when the next operation is left as it is, and the quality deteriorates due to a decrease in moisture, During that time, contamination increases, which may be mixed with the sterilized powder raw material at the initial stage of the next operation, leading to a decrease in yield. For this reason, at the end of the operation, the remaining unsterilized powder material is discharged by the following method to clean the inside of the sterilizer 5. That is, the three-way switching valve 4
Set the chute 3 from "open" to "closed" during driving
d and the backwash pipe 26, the automatic stop valve 9,
15 is closed and the stop valve 25 is opened. Next, when the twin screw of the sterilizer 5 is rotated in a direction opposite to that during production, the air sucked from the air filter 8 flows backward through the stop valve 7, the branch chute 6, and the sterilizer 5. Then, the remaining unsterilized powder material in the sterilizer 5 is transported to the dust collector 16 through the backwash pipe 26 by the flow of the air. Thus, after the operation is completed, automatic cleaning can be performed without disassembling the device, and maintenance is easy. In addition, even when the type is changed, the switching can be performed in a short time, and the productivity is not significantly affected. Further, since the washing is performed by air, the unsterilized powder material collected by the dust collector 16 can be reused.

Next, the present invention (the invention according to claims 1 to 5 )
An embodiment of a method for producing a sterilized mixed powder product according to the present invention and an apparatus therefor will be described with reference to FIG. 2 (schematic explanatory diagram).
The same components as those of the embodiment shown in FIG. 1 are denoted by the same reference numerals, and redundant description will be avoided. The characteristic configuration in FIG. 2 is according to the amount of the sterilized buckwheat raw material between the sterilization process of the buckwheat raw material and the process of cooling and assembling the sterilized buckwheat raw material after the sterilization. And a step of supplying a constant amount of flour. That is, as shown in the figure, the flour airtightly cut out from the flour supply tank 27 via the rotary valve 28 is transported to the cyclone 31 by the air transport pipe 30 and collected after the foreign matter is removed by the separator 29. After that, it is put into a flour storage tank 33 via a rotary valve 32. The amount of the flour supplied to the storage tank 33 is set so as to be a predetermined ratio with respect to the production amount of the sterilized buckwheat, while ensuring airtightness in the system via the rotary valve 34 and the quantitative feeder 35. It is cut out and supplied into the air transport pipe 19 via the supply chute 35a and the automatic stop valve 20.

The flour supplied into the air transport pipe 19 is
It is transported to the cyclone 11 together with the sterilized buckwheat flour (raw material) treated by the sterilizer 5, and collects at the bottom while being completely mixed by the action of the spiral vortex in the cyclone 11. The mixed buckwheat flour mixed in this way is packed in a bag after removing foreign matter by the separator 13. In this embodiment, the air used for conveying the flour is also guided to the air dust collector 16 and the blower 17 using the sterilized buckwheat raw material, and the air is used for processing. It is preferable to provide and process. When the flour supply line is washed after the operation is completed, the automatic stop valve 23 is opened and the automatic stop valves 24, 22, 15, and 2 are opened.
When "0" is set to "closed", the chute 35a for supplying the flour to the pneumatic transport pipe 19 is closed, and the routes of the dust collector 16 and the blower 17 can be secured via the automatic stop valve 23 and the flour washing pipe 37. Air cleaning of the supply line can be performed.

As a result, high-quality sterilized mixed buckwheat flour can be continuously produced by automatic operation in a closed system processing line, and productivity can be greatly improved. In addition to the closed processing line,
Cleaning is also performed in a closed system line, and the entire line including the equipment is always kept in good hygienic condition,
Secondary contamination can be completely prevented. Moreover, since the buckwheat raw material is sterilized through a sterilization treatment process unique to the present invention, the resulting sterilized mixed buckwheat leaves a flavor and aroma unique to buckwheat, and has a high commercial value. Things.

[0022]

As described above, according to the present invention, According to one aspect of the present invention, one or more food powder raw products and metering, or a process of supplying after quantified mixed,
A step of sterilizing the mixed powdered raw material, a step of collecting the powdered raw material sterilized by the sterilization while cooling, and sterilization in a line between the sterilizing treatment and the cooling and assembling step. A method for producing a sterilized food powder product, comprising a step of quantitatively mixing different kinds of food powder products according to the amount of the powder raw material, and a step of removing foreign substances in the cooled powder raw material. Then, after the sterilization step, the one or more powdered raw materials are supplied between the twin screws in a sealed and heated environment, and then compressed and rotated by rotation of the twin screws. Shearing / heating action is applied. Therefore, according to this production method, it becomes possible to automate the production of a high-quality sterilized mixed powder product in a closed processing line, and to improve the productivity,
Secondary contamination can be completely prevented.

According to the second aspect of the present invention, it is suitable for the production of sterilized mixed buckwheat flour, which is a sterilized mixed powder product in which flavor and aroma are indispensable to daily eating habits and important quality evaluation factors. As a result, a highly versatile production method that can be applied to the production of sterilized mixed powder products having other similar quality characteristics can be provided.

Further, the apparatus for producing a sterilized mixed powder product according to the third aspect of the present invention comprises a plurality of feeders which supply one or more kinds of food powder raw materials in a fixed amount, or supply after mixing in a fixed amount. A collecting pipe for concentrating, mixing and transferring all or one or more of the raw material powders for food supplied from the plurality of feeders, and a mixed powder for food supplied from the collecting pipe A twin-screw type sterilizer that sterilizes by applying compression, shearing, and exothermic effects while heating the raw material, and a powder raw material sterilized by the sterilizer is used for food in accordance with the amount of the raw material. A quantitative feeder for quantitatively mixing different kinds of powder products, a cyclone for collecting and cooling these mixed products,
A separator for removing foreign matter in the sterilized powder product discharged from the cyclone, and a dust collector for cleaning air separated by the cyclone. Therefore, it is possible to automate the production of a high-quality sterilized mixed powder product in a closed processing line, thereby improving productivity and producing a sterilized mixed powder product capable of completely preventing secondary contamination. An apparatus can be provided.

According to a fourth aspect of the present invention, a galvanometer with a color tone meter is attached to a connection pipe between the twin screw type sterilizer and the cyclone to detect a difference in concentration from a preset product color tone. , A food powder raw material and / or
Alternatively, the supply amount of the different kind of powdered food product is automatically adjusted. Therefore, by installing such a galvanometer with a color tone meter, the finished color of the sterilized powder raw material is controlled and monitored, and when there is a difference in shading from a preset color tone, the raw material is determined according to the shading difference. Since the supply amount of the product can be changed appropriately, automatic adjustment can be performed so as to obtain a sterilized powder product having a predetermined color tone without changing the production amount of the line, and the productivity can be improved.

Further, the invention according to claim 5 is characterized in that a feeder for supplying a raw material product for food or a fixed-quantity feeder for supplying a different powder product for food and a dust collector are connected by a backwash pipe,
The line is automatically cleaned in a closed system line including the backwash tube. Therefore, by incorporating such a backwashing system into the equipment, automatic cleaning can be performed without disassembling the equipment after the operation is completed, maintenance is easy, and even when changing the product type, switching can be performed in a short time. Becomes possible. As a result, productivity can be improved by such an improvement in maintainability.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing an embodiment of a method and an apparatus for producing a sterilized powder product according to the present invention (the inventions of claims 4 and 5 ).

FIG. 2 is a schematic explanatory view showing an embodiment of a method and an apparatus for producing a sterilized mixed powder product according to the present invention (the inventions of claims 1 to 5 ).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Raw material tank 2 Rotary valve 3 Quantitative feeder 4 Three-way switching valve 5 Twin screw type sterilizer 6 Branch chute 7 Stop valve 8 Air filter 9 Automatic stop valve 10 Gas detector 11 Cyclone 13 Separator 14 Automatic bagging machine 16 Dust collector 17 Blower 18 Color meter 19 Pneumatic transport pipe 26 Backwash pipe 27 Flour supply tank 33 Flour storage tank 36 Flour supply chute 37 Flour wash pipe

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) A23P 1/02 A23L 1/10 A23P 1/12

Claims (5)

(57) [Claims] 1. a step of supplying one or more kinds of powdered food materials in a fixed quantity, or a step of supplying them after being mixed in a fixed amount; a step of sterilizing the mixed powdered raw materials; A process of collecting the sterilized powder raw material while cooling,
A step of quantitatively mixing different kinds of food powder products according to the amount of the sterilized powder raw material in the line between the sterilization treatment step and the cooling assembly step, and removing foreign substances in the powder raw material after cooling Sterilizing the food powder product, wherein the sterilizing step is performed between the twin screw or two or more in a sealed and heated environment. A method for producing a sterilized food powder product, characterized in that the powder raw material product is supplied, and then the compression / shear / heating action is performed by rotating the twin screw. 2. The food powder raw material is buckwheat flour,
Method for producing a food powder products that are sterilized according to claim 1, wherein said food for different powdered product is wheat flour. 3. A plurality of feeders for supplying one or more kinds of powdery raw materials for food or after mixing them quantitatively, and one or more kinds of foods supplied from the plurality of feeders. All or selectively concentrate / mix /
A collecting pipe to be transferred, and a twin-screw sterilizer for sterilizing by applying a compressive, shearing, and heat-generating action while heating the mixed food powder raw material supplied from the collecting pipe,
A quantitative feeder for quantitatively mixing different types of food powder products in accordance with the amount of the raw material product to the powder raw material sterilized by the sterilizer;
A cyclone that collects and cools the mixture, a separator that removes foreign substances in the sterilized powder product discharged from the cyclone, and a dust collector that cleans the air separated by the cyclone. An apparatus for producing sterilized food powder products, characterized in that: 4. A galvanometer with a color tone meter is attached to a connection pipe between the twin-screw type sterilizer and the cyclone to detect a density difference from a preset product color tone, and according to the density difference, 4. The apparatus for producing a sterilized food powder product according to claim 3, wherein the supply amount of the food powder raw material and / or the food heterogeneous powder product is automatically adjusted. 5. A feeder for supplying the food powder raw material or a fixed-quantity feeder for supplying the different food powder product and the dust collector are connected by a backwash pipe, and in a closed system line including the backwash pipe. food powder product manufacturing apparatus sterilization according to any one of claims 3 or 4 to enable the automatic cleaning of the line.