JP2009034038A - Device for heating granule - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for heating granules applicable to long-time continuous operation for sterilization and producing heated granules having less variation in product quality to have constant product quality. <P>SOLUTION: The device for heating granules is provided with: a cylindrical outer pressure vessel having an input port and an output port for granules, a saturated steam blowing-in port, and a water or hot-water supply port; a cylindrical inner stirring vessel having a granule introduction port and a granule lead-out port communicating with the input port and the output port and a porous plate through which the saturated steam flows, and disposed inside the cylindrical outer pressure vessel; a stirring means transforming the granules introduced into the cylindrical inner stirring vessel to the lead-out port while stirring the granules; and a spray nozzle for adding the water or the warm water to the stirred granules in a spray state: wherein the water or the warm water is added to the granules introduced in the cylindrical inner stirring vessel in a spray state while stirring the granules and the granules are heated via the saturated steam introduced through the porous plate. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is to sterilize powder particles by heat treatment using saturated steam (saturated steam), and to obtain heat treated powder particles of a constant quality with little variation in quality. The present invention relates to a heat treatment apparatus for a granular material that can obtain a heat-treated granular material that has no variation in quality or can suppress the variation in quality when subjected to a hydration treatment.

2. Description of the Related Art Conventionally, there are known devices for sterilizing powders and grains such as processed foods and pharmaceuticals using superheated steam or saturated steam (see, for example, Patent Document 1 and Patent Document 2).
The powder sterilization apparatus described in Patent Document 1 is sterilized by heating with saturated steam while stirring and transferring the powder with stirring blades in the pressurized container while blowing saturated steam into the pressurized container. Is. This sterilizer rotates a stirring shaft in which stirring blades are densely planted in a fixed pressurized container, so that high-speed rotation is possible, and powder particles are efficiently and massively reduced in a short time. Bacteria can be treated and can be applied to sterilization treatment of flour and the like. That is, this sterilization apparatus can sterilize effectively in a short time without changing the quality of flour, especially flour such as wheat flour and buckwheat flour.

  On the other hand, the sterilizer described in Patent Document 2 has a supply port of an object to be sterilized that is opened and closed at the upper end, and a saturated steam, superheated steam, While jetting high-pressure steam, low-pressure steam, etc. from the supply pipe, rotating the stirring cylinder with many bars on the inner wall from the supply port to the discharge port in the can, Heating treatment such as heat sterilization and heat denaturation is performed while the material is stirred and transferred. Moreover, this sterilizer can control the processing time of a to-be-sterilized material by controlling the rotation speed of a stirring cylinder, thereby controlling the time for the object to be sterilized to pass through the rotating agitating cylinder.

In this way, this sterilizer can be completely sterilized by supplying steam, can handle a wide variety of raw materials such as leaves, grains, powders, etc., can be handled easily, and does not impair the quality of various raw materials. It is a fluid type that eliminates unevenness with sufficient agitation and can sufficiently exhibit the sterilizing effect of wet heat, and can prevent deterioration in quality of pigments, tissues, flavors and the like of the object to be sterilized.
Further, this sterilizer is provided with a rotation support roller for the stirring cylinder on the frame body, and the frame body is moved on a rail attached to the inside of the can body so that the stirring cylinder can be detached from the can body. By providing a spiral winding covered with a cylinder for feeding the supplied sterilized material to the stirring cylinder so that it can be freely put into and out of the can body, it is compact, inexpensive and can be washed in a round. .

Japanese Patent No. 2784505 JP-A-10-075990

However, since the sterilizer described in Patent Document 2 rotates the stirring cylinder to stir and transfer the object to be sterilized in the can, there is a limit to increasing the rotation speed of the stirring cylinder. There was a problem that could not be processed in large quantities. Further, this sterilizer requires a swing valve having a complicated mechanism for opening and closing the supply port and the discharge port of the can body in order to seal the can body, and the sterilizer is supplied from the supply port of the can body. In order to supply the sterilized material to the rotating stirring cylinder, the complicated structure of rotating the blade made of a spiral winding covered with a cylinder for transferring from the supply port of the can to the rotating stirring cylinder There was a problem that a special mechanism was necessary.
Furthermore, there is a problem that it is impossible to directly measure the temperature of the object to be sterilized or to add water to the object to be sterilized due to the rotating stirring cylinder.

By the way, when continuing the continuous operation of the sterilization process of the granular material in the sterilization apparatus of the granular material described in Patent Document 1, for example, when the process of sterilizing the flour is continued for a long time, When condensation occurs due to cooling of saturated steam on the inner wall of the pressurized container, a very small amount of flour is mixed with the resulting condensation, and this mixture is repeatedly touched with saturated steam and denatured. There was a problem that a lump of flour denatured by moisture and heat of saturated steam was formed in the gap with the pressure vessel, and in some cases, it was peeled off and the operation of the sterilizer had to be stopped.
When starting up this powder sterilizer, the pressure vessel is cooled, so the saturated vapor will always condense until the pressure vessel is sufficiently heated by the saturated vapor. Condensation cannot be completely eliminated when the start is possible, and there is a problem that it takes too much time to start the operation when the operation is started after the condensation has completely disappeared in the pressure vessel.

In recent years, in the case of powders sterilized by the sterilizer for powders described in Patent Document 1, such as sterilized wheat flour, this is dissolved in water and seasonings, other materials, etc. May be used as a batter for deep-fried foods such as tempura and fries.
Thus, batter powder used for fried foods is an important quality control item when the viscosity is adjusted by adding water to the batter, so that it becomes an appropriate value, such as pregelatinized starch with high water absorption The fact is that the viscosity of the batter is adjusted by adding.
However, in order to provide a more pure batter, it is necessary to improve the water absorption of the flour itself without relying on a secondary material such as pregelatinized starch. For this purpose, it has been found that it is effective to perform not only the saturated steam treatment but also the hydration treatment in the sterilization treatment process using the powder sterilization apparatus described in Patent Document 1.

  Therefore, the present inventors tried to process the flour by adding saturated water vapor and water using the powder sterilizer described in Patent Document 1, and the mixture of the flour and water was used for dew condensation. A large amount adhered to the inside, and the pressure vessel, the granular material discharge port, and the rotary valve were blocked during long-time operation. In addition, there is a problem that the quality (especially viscosity) of the batter prepared using the processed wheat flour is not constant because the water increase due to condensation of saturated water vapor and the water increase due to water cannot be appropriately controlled. It was almost impossible to produce batter powder with a constant quality using the powder sterilizer described in 1.

  The present invention has been made in view of the above circumstances, and the object of the present invention is to eliminate the above-mentioned problems of the prior art and to cause dew condensation inside the apparatus even if not only saturated steam treatment but also water treatment. An object of the present invention is to provide a heat treatment apparatus for a granular material which can be continuously operated for a long period of time without causing irregularities, and which can obtain a heat-treated powder particle having uniform quality and no unevenness in treated moisture.

  In order to solve the above-mentioned problems, the present invention comprises a powder inlet near one end, a powder outlet near the other end, and a saturated steam inlet and water or hot water supply outlet. A cylindrical outer pressure vessel, an inlet for the granular material communicating with the inlet, an outlet for the granular material communicating with the outlet, and a perforated plate through which the saturated vapor can circulate, A cylindrical inner stirring vessel disposed in the pressure vessel, and a powder particle disposed in the cylindrical inner stirring vessel, introduced from the charging port, and introduced into the cylindrical inner stirring vessel through the introduction port Agitating means for transporting the body toward the outlet while stirring the body, sprayed with water or hot water on the granular material which is disposed in the cylindrical inner stirring vessel and introduced into the inside and stirred by the agitating means Communicating with the supply port for water A spray nozzle and water or hot water from the spray nozzle while stirring by the stirring means while the granular material introduced from the introduction port and introduced into the cylindrical inner stirring vessel from the introduction port is stirred. The present invention provides a heat treatment apparatus for a granular material, characterized in that heat treatment is performed by saturated steam introduced through the perforated plate while being sprayed.

Here, it is preferable that the cylindrical outer pressure vessel includes an openable / closable lid on the other end side on the discharge port side.
Moreover, it is preferable that the said cylindrical inner side stirring container is equipped with the said circular perforated plate in at least one of the both ends.
Moreover, it is preferable that the said perforated plate is a circular punching plate provided in the said one end side of the said inlet side of the said cylindrical inner side stirring container.
The cylindrical inner stirring vessel includes a plurality of cylindrical inner cartridges in contact with each other, and each of the plurality of cylindrical inner cartridges is provided with at least two guides disposed in the cylindrical outer pressure vessel. It is preferably supported by a rail so as to be movable.

The stirring means preferably includes a rotary stirring shaft and a plurality of rod-shaped blades having dimensions close to the cylindrical inner diameter of the cylindrical inner stirring vessel, which are planted on the stirring shaft.
Further, the plurality of rod-shaped blades are implanted in a spiral shape on the rotary stirring shaft toward the periphery, and a rotation locus viewed from a direction perpendicular to the rotary stirring shaft is almost in the axial direction of the rotary stirring shaft. It is preferable to arrange them so that they are arranged without gaps.
The rotary stirring shaft has a tip at the other end extending from the cylindrical inner stirring vessel and supported by a support member detachably fixed to the inner side of the cylindrical outer pressure vessel by a fixing means. The end of the one end side extends from the cylindrical inner stirring vessel and is rotatably supported by a bearing unit attached to the outside of the side plate of the cylindrical outer pressure vessel. The space between the rotary stirring shaft and the side plate of the cylindrical outer pressure vessel is preferably hermetically sealed by a seal member.
Moreover, it is preferable that the granular material before heat processing is supplied to the said inlet of the said cylindrical outside pressure vessel through a material seal screw.

  According to the present invention, when the granular material is heat-treated using saturated steam, the saturated steam is blown out between the cylindrical outer pressure vessel and the cylindrical inner stirring vessel, and is disposed in the cylindrical outer pressure vessel. In the cylindrical inner stirring vessel through which saturated steam can be circulated, the powder is stirred, and heat treatment with saturated steam is performed, so that the granular material such as the inner wall of the cylindrical inner stirring vessel Condensation does not occur in the contact area, so it can be operated continuously for a long time. In addition, by using saturated steam and adding water or hot water to heat the powder particles, the bacteria are sterilized and the quality varies. It is possible to obtain a heat-treated granular material with a small amount and a constant quality.

Hereinafter, the heat processing apparatus of the granular material which concerns on this invention is demonstrated in detail based on suitable embodiment shown to an accompanying drawing.
FIG. 1A is a front cross-sectional view conceptually showing an embodiment of a heat treatment apparatus for granular materials according to the present invention, and FIG. 1B is a cross-sectional view taken along line IB-IB of the heat treatment apparatus shown in FIG. FIG. 2A is a top sectional view of the heat treatment apparatus shown in FIG. 1A, and FIG. 2B is a sectional view taken along the line IIB-IIB of the heat treatment apparatus shown in FIG. FIG. 3 is a schematic end view of the heat treatment apparatus shown in FIG.

  The heat treatment apparatus 10 for granular materials shown in FIGS. 1A to 3 performs sterilization and sterilization of granular materials such as flour such as wheat flour, grains such as cereal grains, processed foods, and chemical raw materials, A pre-treatment for preconditioning that water is added under predetermined conditions later, and a cylindrical outer pressure vessel (hereinafter referred to as a pressure vessel) 12 maintained at a predetermined pressure, It has a cylindrical inner stirring container (hereinafter referred to as a stirring container) 14 disposed and a stirrer 16 disposed in the stirring container 14. Here, the stirring container 14 and the stirrer 16 constitute a horizontal high-speed mixer.

  Here, the pressure vessel 12 is maintained at a predetermined pressure by saturated steam for heat sterilization (sterilization) of the inside thereof, and is provided with a powder inlet 18a in a substantially central portion near the base end, A cylindrical body 18 provided with a powder outlet 18b on the lower side near the front end, a front end plate 20 for opening and closing a circular opening on the front end side of the cylindrical body 18 and a circular opening on the proximal end side of the cylindrical body 18 And a proximal end side cover member 22 for closing the cover. The tip end plate 20 is opened and closed by rotating about a shaft 20a provided on an arm 19 attached to the cylindrical body 18, and is locked by a lock mechanism (not shown) when closed.

A saturated steam supply pipe 24 serving as a saturated steam inlet 24 a is attached to an upper portion of the proximal end cover member 22, and a saturated steam outlet 24 b at the distal end thereof is a proximal end cover member 22 in the pressure vessel 12. And the stirring vessel 14 is disposed downward. The saturated steam is supplied from a boiler (not shown) via a steam header.
The cylindrical body 18 is further provided on the lateral side near the base end, and provided on the upper side with a water or hot water supply port 18c for adding water to the granular material to be stirred in the stirring vessel 14, and stirred. A safety valve 18d that functions so that the pressure in the container 14 does not become too high, and an on-off valve 18e that is provided on the upper side near the tip and opens the pressure in the pressure vessel 12 to the atmosphere before the tip end plate 20 is opened. The drain separator 18f is provided on the lower side and discharges moisture from the pressure vessel 12 when the saturated steam blown into the pressure vessel 12 from the outlet 24b is cooled and condensed.

  Next, the agitation vessel 14 is supplied from the supply port 18c and the granular material introduced from the introduction port 18a of the pressure vessel 12, the saturated steam blown from the blowout port 24b through the supply tube 24 from the blowout port 24a. The water or hot water is received inside, and while being stirred by the stirrer 16 disposed inside, the powder and particles are transferred toward the discharge port 18b of the pressure vessel 12, and the particles are heat-treated with saturated steam. Water or hot water is sprayed on the granular material in a spray form.

The stirring vessel 14 is attached to a cylindrical casing 26 composed of four cylindrical divided cartridges 26a, 26b, 26c and 26d, and circular openings on the proximal end side and the distal end side of the cylindrical casing 26, and allows a saturated steam to flow therethrough. Punching plates 28a and 28b, which are perforated plates, are provided. The divided cartridges 26a, 26b, 26c, and 26d are preferably movably supported by at least two guide rails (not shown) disposed in the pressure vessel 12, respectively. By configuring in this way, not only cleaning of the stirring vessel 14 but also cleaning and cleaning of the pressure vessel 12 are facilitated, and as a result, it is possible to easily change the granular material to be heat treated. Various powders can be heat-treated.
Here, instead of one circular perforated plate of the circular opening on the proximal end side and the distal end side of the cylindrical casing 26, a blind plate made of a simple disc may be used. It is preferable to use a punching plate 28a on the base end side near the saturated steam outlet 24b.

The split cartridge 26a on the proximal end side of the cylindrical casing 26 is provided with an introduction port 27a that communicates with the input port 18a of the pressure vessel 12, and the split cartridge 26d on the distal end side communicates with the discharge port 18b of the pressure vessel 12. A lead-out port 27b is provided.
The introduction port 27a of the stirring vessel 14 is configured by a small-diameter pipe 25 that is provided in the charging port 18a of the pressure vessel 12 and communicates with a material seal screw 44 described later in order to maintain the pressure in the pressure vessel 12. Is done. On the other hand, the discharge port 18b of the pressure vessel 12 has a slightly larger circular shape so as to receive the circular outlet 27b of the stirring vessel 14. In addition, although both may be connected by metal contact, it is preferable to connect by a band (not shown) or the like so that there is no leakage of the granular material at the connection portion.

The split cartridge 26a on the proximal end side of the cylindrical casing 26 is provided with a spray nozzle 27c communicating with the water or hot water supply port 18c through a pipe line or the like near the charging port 18a of the pressure vessel 12. Water or hot water is sprayed from the spray nozzle 27c toward the inner powder body and sprayed. Here, since the sprayed water or hot water has a large heat capacity, it also has a function of promoting sterilization and sterilization by saturated steam.
The amount of water added is not particularly limited, and may be appropriately selected according to the properties of the heat treated powder and the properties required. In particular, in the case of flour used as batter flour, it is preferable to spray about 3 to 10% of water with respect to the mass of the flour in order to develop an appropriate viscosity.

  The stirrer 16 is disposed in the stirring vessel 14 and is introduced from the charging port 18a of the pressure vessel 12 and is directed toward the outlet 27b while stirring the powder particles introduced into the stirring vessel 14 through the inlet 27a. A stirring shaft 30 that rotates at a high speed, and a plurality of pin-shaped stirring blades 32 having dimensions close to the cylindrical inner diameter of the stirring vessel 14 that are implanted on the stirring shaft 30. Here, the plurality of stirring blades 32 are implanted in a spiral shape toward the periphery on the stirring shaft 30, and the rotation trajectory viewed from the direction perpendicular to the stirring shaft 30 has almost no gap in the axial direction of the stirring shaft 30. It is preferable that they are arranged side by side.

  By the way, as apparent from FIGS. 1A to 3, the stirrer 16 has a number of pin-shaped stirring blades 32 spirally arranged around the stirring shaft 30 at equal intervals. When 30 is expanded, it becomes as shown in FIG. The straight line in which the pin-shaped stirring blades 32 are arranged forms an angle of 10 ° 42 ′ with respect to a line perpendicular to the axis of the stirring shaft 30 in FIG. 4, but is not limited to this angle. The pin-shaped stirring blades 32 are spaced and numbered so that the rotation trajectories of the pin-shaped stirring blades 32 are arranged almost without gaps when viewed from the direction perpendicular to the axis of the stirring shaft 30 (indicated by white arrows in the figure). It is arranged.

The tip of the stirring shaft 30 on the tip side of the heat treatment apparatus 10 extends from the punching plate 28b of the stirring vessel 14, and is a wheel-like member that is detachably fixed inside the pressure vessel 12 by a fixing means such as a nut (not shown). The bearing unit 36 supported by the support member 34 is rotatably supported. On the other hand, the proximal end of the stirring shaft 30 extends from the punching plate 28 a of the stirring vessel 14 and is rotatably supported by a bearing unit 38 attached to the outside of the lid member 22 of the pressure vessel 12.
The space between the stirring shaft 30 and the lid member 22 of the pressure vessel 12 is hermetically sealed by a seal member 40.
The stirring shaft 30 is inserted through the central openings of the punching plates 28a and 28b, but there is no need to seal between the stirring shaft 30 and these central openings unless the granular material to be heat-treated leaks, It is good also as a gap | interval which does not leak a granular material, and you may attach a brush, a flexible member, etc. to the stirring shaft 30 or the center opening of punching plates 28a and 28b so that a granular material may not leak.

  In addition, as shown in FIG. 3, the heat treatment apparatus 10 for a granular material according to the present invention further includes a hopper 42 for holding the granular material, and a granular material supplied from the hopper 42 through a pressure vessel 12 and a stirring vessel. 14 in a pressure shut-off state and sterilized from a material seal screw 44 supplied from a later-described inlet 18a provided near the base end and a later-described outlet 18b provided near the distal end of the pressure vessel 12. A rotary valve 46 for discharging powder particles.

The heat treatment apparatus for a granular material of the present invention is basically configured as described above, and the operation thereof will be described below.
Here, in order to heat-treat a granular material and add water for sterilization and moisture adjustment using the heat treatment apparatus 10 having the above-described configuration shown in FIGS. Saturated steam is blown out from the outlet 24b, and the pressure vessel 12, the stirring vessel 14, the stirrer 16 and the like are sufficiently heated, and a warm-up operation is performed so that at least condensation does not occur in the stirring vessel 14. During this time, the moisture that has condensed due to the cooling of the saturated vapor in the pressure vessel 12 is discharged from the drain separator 18f.

After this warm-up operation, saturated steam is blown out from the outlet 24b into the pressure vessel 12 and the stirring shaft 30 of the stirrer 16 in the stirring vessel 14 is rotated at a high speed from the hopper 42 (sterilization). The material to be sterilized and hydrated is supplied by the material seal screw 44 from the inlet 18a of the pressurized container 12 into the stirring container 14 through the inlet 27a.
As a result, the powder particles are agitated while being transferred from the inlet 27a to the outlet 27b by the stirrer 16 in the stirring vessel 14, and then blown out from the outlet 24b and stirred via the punching plates 28a and / or 28b. Spray that is evenly mixed with the saturated water vapor that has flowed into the container 14, is sterilized or sterilized, is supplied from the water or hot water supply port 18c, and is sprayed in a predetermined amount from the spray nozzle 27c according to the granular material. Even the moisture in the form is mixed evenly and thereby properly hydrated.

Thus, the heat-treated powder granules that have been sufficiently sterilized and appropriately hydrated are led out from the stirring vessel 14 through the outlet 27b and discharged from the outlet 18b of the pressure vessel 12 through the rotary valve 46.
The heat-treated granular material obtained in this way, when it is wheat flour, has been adequately sterilized or sterilized, as well as being appropriately hydrated and heat-treated. When fried in oil, the fried garment has a crisp feeling and the meltability is improved.

Of course, the heat treatment apparatus 10 of the illustrated example causes the saturated vapor to blow out from the outlet 24b between the pressure vessel 12 and the stirring vessel 14 when the granular material is heat-treated using the saturated vapor, so that the inside of the pressure vessel 12 In the stirring vessel 14 arranged in the above, the powder is stirred, and heat treatment (sterilization) with saturated steam is performed, so even if water is sprayed on the powder from the spray nozzle 27c, Condensation does not occur in a portion in contact with the granular material such as the inner wall of the stirring vessel 14.
For this reason, the illustrated heat treatment apparatus 10 can be operated continuously for a long time.

In addition, the heat treatment apparatus 10 in the illustrated example can perform sterilization using only the saturated steam that flows in while stirring the powder particles in the stirring vessel 14 without spraying moisture from the spray nozzle 27c on the powder particles. Of course, in this case, it can function as a sterilizer or a sterilizer.
Therefore, the heat treatment apparatus of the present invention can preliminarily perform pre-hydration treatment of the subsequent hydration treatment together with sterilization or sterilization of the powder, or can simply sterilize or sterilize the powder. . That is, the heat treatment apparatus of the present invention can be used as a production apparatus for heat-treated powder granules with moisture adjustment or as a sterilization or sterilization apparatus, depending on the application and the characteristics of the granules.
In addition, since the heat-treated powder granule obtained using the heat treatment apparatus of the present invention naturally has more moisture than the raw material granule before treatment, the moisture is adjusted through a drying process in a drying apparatus or the like. There is a need. For example, air drying is used for such drying.

  In the above embodiment, a pin-shaped (bar-shaped) blade, for example, a pin (bar) is used as the stirring blade 32, but the present invention is not limited to this, and any stirring blade may be used. A square blade or a rod-shaped blade closer to a circle is more preferable than a plate blade having a rectangular shape because it shows a higher sterilizing effect. Furthermore, this rod-shaped stirring blade needs to have a transfer function in addition to the stirring function for the powder and granular material. For that purpose, it is only arranged in a spiral around the rotating shaft as in the above embodiment. There may be other arrangements as long as the rotation trajectories are arranged almost without gaps.

In addition, when the internal pressure is high due to the structure of the rotary valve seal, high-pressure gas (saturated steam in this case) escapes, but in the case of saturated steam, this condenses and solidifies the powder and makes it impossible to operate. It often ends up. This tendency is particularly strong with respect to the supply of the granular material to the stirring vessel 14 in the pressure vessel 12.
On the other hand, by using a material seal screw, airtightness is maintained by the powder itself fed one after another at a filling rate of 100%, so that internal water vapor does not leak, resulting in such inconvenience. Will not occur.

In the above embodiment, the saturated vapor is stirred while the powder is agitated by a plurality of rod-shaped blades arranged so that the rotation trajectory viewed from the direction perpendicular to the rotation agitation shaft is arranged with almost no gap under pressure. Or, it is configured to be mixed and heated evenly with saturated steam and sprayed water, so that the granular material is sufficiently and uniformly mixed with saturated steam or saturated steam and water in a short time. A high bactericidal effect is obtained.
On the other hand, in the above embodiment, the saturated steam used for heat sterilization and sterilization becomes moisture and is added as it is to the granular material. It is added uniformly.

  Further, in the above embodiment, since it is possible to prevent the occurrence of condensation due to saturated steam in the stirring vessel, the granular material modified by moisture and heat does not stick to the wall surface in the stirring vessel, and as a result, stirring The function is not hindered and a smooth continuous operation can be performed over a long period of time.

  As mentioned above, although the Example was given and demonstrated in detail about the heat processing apparatus of the granular material which concerns on this invention, this invention is not limited to the said Example, In the range which does not deviate from the summary of this invention, various improvement Of course, the design may be changed.

(A) is front sectional drawing which shows notionally one Embodiment of the heat processing apparatus of the granular material which concerns on this invention, (b) is IB-IB sectional view taken on the line of the heat processing apparatus shown to (a). is there. (A) is the upper surface sectional drawing of the heat processing apparatus shown to Fig.1 (a), (b) is the IIB-IIB sectional view taken on the line of the heat processing apparatus shown to (a). It is an end surface schematic diagram of the heat processing apparatus shown to Fig.1 (a). It is an expanded view of one Example of the stirring blade used for the heat processing apparatus shown to Fig.1 (a).

Explanation of symbols

10 Heat treatment equipment for powder (heat treatment equipment)
12 Cylindrical outer pressure vessel (pressure vessel)
14 Cylindrical inner stirring container (stirring container)
16 Stirrer 18 Cylindrical body 18a Input port for powder and granular material (input port)
18b Powder outlet (discharge outlet)
18c Water or hot water supply port (supply port)
18d Safety valve 18e On-off valve 18f Drain separator 20 Front end plate 22 Base end side lid member (lid member)
24 Saturated steam supply pipe 24a Saturated steam inlet (blower inlet)
24b Saturated steam outlet (outlet)
25 Pipe line 26 Cylindrical casing 26a, 26b, 26c, 26d Cylindrical divided cartridge 27a Introducing port (introducing port) of granular material
27b Powder outlet (outlet)
27c Spray nozzle 28a, 28b Punching plate 30 Stirring shaft 32 Pin-shaped stirring blade (stirring blade)
34 Wheel-shaped support member 36, 38 Bearing unit 40 Seal member 42 Hopper 44 Material seal screw 46 Rotary valve

Claims (9)

A cylindrical outer pressure vessel provided with a powder inlet near one end, a powder outlet near the other end, and further provided with a saturated steam inlet and water or hot water supply port;
A cylinder disposed in the cylindrical outer pressure vessel, comprising an inlet for the granular material communicating with the inlet, an outlet for the granular material communicating with the outlet, and a porous plate through which the saturated vapor can flow. An inner stirring vessel,
Stirring that is disposed in the cylindrical inner stirring vessel, is transferred from the charging port, and is transferred to the outlet port while stirring the powder particles introduced into the cylindrical inner stirring vessel through the inlet port. Means,
A spray nozzle that communicates with the supply port for hydrating water or hot water in the form of a spray to the powder that is disposed in the inner stirring vessel, introduced into the stirring vessel, and stirred by the stirring means;
While stirring the powder particles introduced from the introduction port and introduced into the cylindrical inner stirring vessel from the introduction port by the stirring means, water or hot water is added from the spray nozzle in a spray form, A heat treatment apparatus for a granular material, wherein heat treatment is performed with saturated steam blown from the blow-in opening and introduced through the perforated plate.   The said cylindrical outer side pressure vessel is a heat processing apparatus of the granular material of Claim 1 provided with the opening-and-closing lid which can be opened and closed in the said other end side at the said discharge port side.   The said cylindrical inner side stirring container is a heat processing apparatus of the granular material of Claim 1 or 2 provided with the said circular perforated plate in at least one of the both ends.   The heat treatment apparatus for a granular material according to claim 3, wherein the perforated plate is a circular punching plate provided on the one end side on the inlet side of the cylindrical inner stirring vessel.   The cylindrical inner stirring vessel includes a plurality of cylindrical inner cartridges in contact with each other, and each of the plurality of cylindrical inner cartridges is provided by at least two guide rails disposed in the cylindrical outer pressure vessel. The heat processing apparatus of the granular material in any one of Claims 1-4 supported so that a movement is possible.   The said stirring means is equipped with a rotating stirring shaft and a plurality of rod-shaped blades having a size close to the cylindrical inner diameter of the cylindrical inner stirring vessel, which are planted on the rotating stirring shaft. Heat treatment equipment for powder.   The plurality of rod-shaped blades are helically planted on the rotary stirring shaft toward the periphery, and the rotation trajectory viewed from a direction perpendicular to the rotary stirring shaft has almost no gap in the axial direction of the rotary stirring shaft. The heat processing apparatus of the granular material of Claim 6 arranged so that it may rank. The rotary stirring shaft is
The tip on the other end side extends from the cylindrical inner stirring vessel and is rotatable by a bearing unit supported by a support member that is detachably fixed inside the cylindrical outer pressure vessel by a fixing means. Supported,
The tip on the one end side extends from the cylindrical inner stirring vessel and is rotatably supported by a bearing unit attached to the outer side of the side plate of the cylindrical outer pressure vessel,
The heat treatment apparatus for granular material according to claim 6 or 7, wherein a space between the rotary stirring shaft and a side plate of the cylindrical outer pressure vessel is hermetically sealed by a seal member.   The heat treatment apparatus for granular material according to any one of claims 1 to 8, wherein the granular material before heat treatment is supplied to the charging port of the cylindrical outer pressure vessel via a material seal screw.

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