JP2000140601A - Mixing dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mixing dryer capable of preventing the degradation and the melting of a granular body (product) by effectively cooling the surface of a driving power transmitting means or the like, which is a heat generating source in a vessel main body constituting the mixing dryer, to prevent the increase of the temp. of the granular body in the mixing and drying treatment. SOLUTION: This mixing dryer which is provided with the vessel main body, a stirring shaft 40 revolving and rotating in the vessel main body and the driving power transmitting means is constituted so that jackets 51 and 53 for cooling, which is a cooling means for cooling a 2nd gear box 20, is provided on the 2nd gear box 20 of the heat generating source giving thermal effect of a material to be stirred, which is stirred in the vessel main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for stirring and
More specifically, the present invention relates to a mixing / drying machine having a mechanism for suppressing a rise in temperature of a powder or the like during stirring and mixing.

[0002]

2. Description of the Related Art Conventionally, as this type of mixing dryer, for example, there is an apparatus as shown in FIG.

[0003] A mixing dryer according to the prior art shown in FIG. 7 comprises an inverted conical container body 101 and a container body 1.
01, and a stirring shaft 111
Driving means 12 for supplying a driving force to rotationally drive
1 and the driving force from the driving means 121
And a driving force transmitting means 131 for transmitting the driving force to the motor.

The container main body 101 comprises a main body 102 and a lid 103 for closing the upper part of the main body 102. The lower end of the main body 102 has a discharge port for discharging a product (agitated powder or the like). An opening 104 (not shown) is provided in the lid 103 for introducing a powder or the like as a substance to be stirred.
Is provided.

[0005] A spiral blade 112 is provided on the stirring shaft 111.
, And revolves along the inner peripheral side surface of the container body 101.

The driving means 121 includes a revolving motor 122 for supplying a driving force for revolving the stirring shaft 111 and a rotation motor 123 for supplying a driving force for rotating the stirring shaft 111. ing.

[0007] The driving force transmitting means 131 is a motor
A first gear box 132 having a function of converting the driving force from the motor 22 into a revolving motion for revolving the stirring shaft 111 and a mechanism for transmitting the driving force from the rotation motor 123 to the stirring shaft 111; A second gearbox 133 having a function of converting a driving force from the diversion motor 123 into a rotation for rotating the stirring shaft 111 is connected to the first gearbox 132 and the second gearbox 133. ,
A drive power transmission hollow shaft 134 having a rotation drive power transmission shaft (described later) for transmitting the drive force from the rotation motor 123 is provided in the inside thereof.

[0008] In the mixing / drying apparatus according to the prior art configured as shown in FIG. 7, powder or the like is charged into the container body 101 from the charging port, and the stirring shaft 111 is rotated and revolved in this state. , Powder and the like are appropriately mixed.

FIG. 8 is a partially enlarged cross-sectional view of the vicinity of the driving force transmitting means constituting the mixing dryer of FIG. Hereinafter, the configuration of the driving force transmitting means 131 and the like will be specifically described based on FIGS. 7 and 8.

An inverted conical member 18 is provided on the upper part of the container body 101.
1, a bearing 182 is provided in the inverted conical member 181, and the bearing 182 rotatably supports a revolving drive shaft 183 for transmitting the driving force from the revolving motor 122. The revolving drive shaft 183 is connected to a hollow driving force transmitting hollow shaft 134 extending in a radial direction from the revolving driving shaft 183, and the revolving driving shaft 183 and one end of the power transmitting hollow shaft 134 are fixed by bolts 184. Have been. In addition, bolt 185
Thereby, the other end of the power transmission hollow shaft 134 and the second gear box 133 are fixed. Thus, the rotation of the revolution motor 122 is transmitted via the revolution drive shaft 183 and the driving force transmission hollow shaft 134, and revolves the stirring shaft 111.

The rotation drive shaft 193 for transmitting the driving force from the rotation motor 123 is inserted into a through hole 183 a formed in the revolution drive shaft 183, and a bearing 194 is provided.
It is rotatably supported by. A rotation driving force transmission shaft 195 is arranged in the driving force transmission hollow shaft 134, and is rotatably supported by bearings 196 and 196 provided at both ends of the driving force transmission hollow shaft 134. Further, the second gearbox 133 has a rotation shaft 1
The rotation shaft 197 is rotatably supported by a bearing 198. And the rotation axis 19
7 has a stirring shaft 111 having a spiral blade 112
It is attached by 99.

Further, bevel gears 201, 202, 203, and 2 are provided at the lower end of the rotation driving shaft 193, both ends of the rotation driving force transmission shaft 195, and the upper end of the rotation shaft 197, respectively.
04 is provided, and each bevel gear 201, 202,
The rotation of the rotation drive shaft 193 is controlled by
It is configured to transmit to the rotation shaft 197 via the rotation driving force transmission shaft 195. Thus, the rotation of the rotation motor 123 is transmitted via the rotation drive shaft 193, the rotation drive force transmission shaft 195, and the rotation shaft 197, and the stirring shaft 111 is rotated.
To rotate.

The inverted conical member 181 and the revolving drive shaft 18
An oil seal 211 is provided to seal between the second gear box 133 and the rotation shaft 197. An oil seal 212 is provided to seal between the second gear box 133 and the rotation shaft 197.
Further, a lip seal 213 is provided at a lower end portion of the inverted conical member 181 at a contact position with the revolution drive shaft 183 as a shaft sealing portion of the revolution drive shaft 183, and a lower end portion of the second gear box 133 is provided. The lip seal 21 serves as a shaft sealing portion of the rotation shaft 197 at a contact position with the rotation shaft 197.
4 are provided.

[0014]

However, in the mixing and drying machine according to the prior art, the driving force transmitting means 131 for transmitting the driving force for driving the stirring shaft 111 is provided.
However, it is configured using a bevel gear for transmitting rotation from a motor, a bearing, an oil seal, and the like. When the stirring shaft is rotated, the connecting portions of the above-described configurations each generate friction, and the driving force transmission unit generates heat. For this reason, the surface temperature of the driving force transmitting means may be higher than the heat-resistant temperature of the product (eg, powder or granule) due to the heat generation. In particular, products in the field of pharmaceuticals or foods are sensitive to temperature, and some products have a heat-resistant temperature of about 40 to 50 ° C. Therefore,
When low-melting substances (powder and the like) of pharmaceuticals and the like are mixed and dried using a mixing and drying machine according to the prior art, the heat generated by the driving force transmission means causes the adhesion to the driving force transmission means. There has been a problem that products such as accumulated powders and the like are deteriorated and melted.

Further, in order to solve the above-mentioned problem, there is also known a mixing / drying machine having a structure in which a cooling jacket is provided outside a container body in order to suppress a rise in the temperature of so-called granular material or the like. However, even when such a mixing dryer is used, since the surface of the driving force transmission means or the like as a heat source cannot be cooled, the powder or granules that are close to or adhere to the surface of the driving force transmission means. However, there is a problem that deterioration and melting occur.

Further, the driving force transmitting means, etc., which is a heat source,
There is also a problem that it is difficult to cool effectively because it is rotationally driven in the container body.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and effectively reduces the surface of a driving force transmitting means as a heat source in a container body constituting a mixing and drying machine. It is an object of the present invention to provide a mixing / drying machine capable of preventing deterioration and melting of a powder (product) by preventing temperature rise of the powder during mixing and drying. .

[0018]

That is, according to the present invention, there is provided a container body, a stirring shaft 40 for rotating and revolving within the container body, and transmitting a driving force to the stirring shaft 40. And a cooling device for cooling the heat source, the heat source having a thermal effect on the substance to be stirred in the container body. Characterized by

According to the mixing dryer according to the present invention, the heat source in the container body is cooled by the cooling means, so that the low melting point substance to be stirred (powder and granules used in pharmaceuticals and the like) can be removed. It is possible to obtain a mixing / drying machine capable of preventing a rise in temperature and preventing deterioration / melting of a granular material (product). The mixing dryer according to the present invention is an apparatus that performs at least one of a mixing process and a drying process.

Also, in the present invention, the heat source is
It is preferable that at least one of the stirring shaft 40 and the driving force transmitting means is used.

In the container main body, the portion which is most likely to be at the highest temperature is the stirring shaft 4 which is performing the stirring operation.
With zero or multiple gears and bearings,
The driving force transmitting unit transmits a driving force for rotating the stirring shaft 40. Therefore, providing the cooling means on at least one of these parts is the best means for preventing the temperature of the substance to be stirred having a low melting point (powder or the like used for pharmaceuticals or the like) from rising. Therefore, according to the above-described preferred example, it is possible to prevent the temperature of the substance to be stirred having a low melting point (such as a granular material used in pharmaceuticals and the like) from rising, and to prevent deterioration and melting of the granular material (product). A possible mixing dryer can be obtained effectively.

Further, in the present invention, the driving force transmitting means includes a first gear box 10 positioned substantially at the center of revolution when the stirring shaft 40 revolves, and a driving force transmitting means for substantially rotating the stirring shaft 40 when rotating. The first gear box is constituted by using a second gear box 20 located at the rotation center, and a driving force transmitting hollow shaft 30 connecting the first gear box 10 and the second gear box 20. Box 10, the second gear box 20, and the driving force transmitting hollow shaft 3
It is preferable that the cooling means is provided for at least one of the zeros.

Among the elements constituting the driving force transmitting means, the first gear box 10, the second gear box 20, and the driving force transmitting hollow shaft 30 have rotating members such as gears. Therefore, heat is easily generated by friction and the like. Therefore, providing the cooling means in at least one of these parts is one of the best means for preventing the temperature of a substance to be stirred having a low melting point (powder or the like used in pharmaceuticals or the like) from rising. It is. Therefore, according to the above-described preferred example, it is possible to prevent the temperature of a substance to be stirred having a low melting point (eg, a granular material used in pharmaceutical products and the like) from rising, and prevent deterioration and melting of the granular material (product). A possible mixing dryer can be obtained effectively. The stirring shaft 40
Means that the revolving speed (usually, several tens of rpm) is set to be larger than the revolving speed (usually, several rpm). Is common. Then, the second gear box 20 having a plurality of gears and the like when rotating the stirring shaft 40 is most likely to generate heat. Therefore, it is preferable that at least the second gear box 20 is provided with the cooling means among the above elements.

Further, in the present invention, the cooling means is attached to the heat source, and a cooling jacket through which the cooling medium can circulate, and a cooling medium inflow passage through which the cooling medium flows into the cooling jacket. It is preferable to use a cooling medium outflow path 72 through which the cooling medium flows out from the cooling jacket.

According to this preferred embodiment, the cooling jacket attached to the heat source (provided so as to be attached to) is formed by using the cooling medium inflow path and the cooling medium outflow path. Since the cooling medium is circulated, heat can be efficiently exchanged between the heat source and the cooling medium. Therefore, the heat source can be effectively cooled, so that the temperature of the substance to be stirred having a low melting point can be prevented from rising, and the mixing and drying can be prevented from deteriorating and melting the powders (products). Machine can be obtained effectively.

In the present invention, the cooling jacket is composed of a plurality of parts 51, 52, 53,
The plurality of parts 51, 52, 53 are provided in a cooling medium circulation path 5.
It is preferable that the connection is made at 4, 55.

According to this preferred example, a plurality of portions 51, 52 of the cooling jacket are provided in accordance with the location of the heat source.
52 and 53 can be appropriately arranged. Also,
With such a configuration, the cooling jacket can be provided at a position that does not affect the rotation / revolution movement of the stirring shaft 40. Even the cooling means (cooling jacket)
Can be easily mounted.

Further, in the present invention, it is preferable that the cooling medium is first circulated to a portion of the plurality of portions 51, 52, 53 that generates the most heat.

According to this preferred example, first of all,
Since the cooling medium is circulated through the portion generating the largest amount of heat, it is possible to effectively cool that portion, and it is possible to minimize the thermal effect on the powder or the like. In addition, in order to suppress the thermal influence on the powder or the like, it is preferable that the cooling medium is first circulated to a portion where the powder or the like is most likely to approach or is most likely to adhere.

[0030]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially enlarged view of the driving force transmitting means and its peripheral members constituting the mixing dryer according to the embodiment of the present invention. The driving force transmission means shown in FIG. 1 has basically the same configuration and operation as the above-described driving force transmission means according to the related art. Therefore, in the following description, the description will focus on the features of the present invention (the structure of the cooling means and its peripheral elements) which are different from those of the prior art, and will omit the details of the same configuration and the like as those of the prior art. .

In FIG. 1, the driving force transmitting means according to the present embodiment includes a first gear box 10, a second gear box 20, and a driving force transmitting hollow shaft 30.

The first gear box 10 has a function of converting the driving force from the revolving motor into a revolving motion for revolving the stirring shaft 40 and a function of transmitting the driving force from the rotation motor to the stirring shaft 40. And The first gear box 10 is positioned substantially at the center of revolution when the stirring shaft 40 revolves. The first gearbox 10 is connected to a revolution drive shaft 11 that rotates by the driving force from the revolution motor, and is connected to the first gearbox 10 via the revolution drive shaft 11, the first gearbox 10, the driving force transmission hollow shaft 30, and the like. The agitating shaft 40 is configured to revolve around a substantially center of the revolving drive shaft 11. The revolving drive shaft 11 is formed as a hollow shaft.

The second gear box 20 has a function of converting the driving force from the motor for rotation into rotation for rotating the stirring shaft 40. The second gear box 20 has a function of rotating the stirring shaft. It is located substantially at the center of rotation when rotating 40. The rotation drive shaft 21 that transmits the driving force from the rotation motor is inserted into a through hole 11 a formed in the revolution drive shaft 11. Then, the rotation drive shaft 21,
The stirring shaft 40 is configured to rotate through the rotation driving force transmission shaft 22 and the second gear box 20. The rotation drive shaft 21 is formed as a hollow shaft.

In the present embodiment, the cooling means for cooling the surface of the second gear box 20 is composed of a plurality of parts provided on the side surface and the lower surface of the second gear box 20. A cooling jacket, a cooling medium inflow path, a cooling medium outflow path, and the like connected to the cooling jacket are provided.

FIG. 2 is a partial side view of the driving force transmitting means shown in FIG. 1, and is a partial side view around the second gear box according to the present embodiment. 3 shows a top view of FIG. 2, FIG. 4 shows a cross-sectional view taken along line IV-IV of FIG. 2, and FIG. 5 shows a cross-sectional view taken along line VV of FIG. It is shown.

The structure of the cooling means according to the present embodiment will be described below with reference to FIGS.

The cooling jacket according to the present embodiment includes a plurality of portions of a first cooling jacket 51, a second cooling jacket 52, and a third cooling jacket 53. The first and second cooling jackets 51 and 52 are provided on the side surface of the second gear box 20, and the third cooling jacket 53 is provided on the lower surface of the second gear box 20. Have been.

First and second cooling jackets 51, 52
Is provided to cope with heat generated from the bearings provided in the second gear box 20,
The third cooling jacket 53 is provided with the second gear box 2.
This is provided in order to cope with heat generated by the lip seal that seals the agitator shaft 40 with the lip seal 0.

The inflow and outflow of the cooling medium to and from the cooling jackets 51, 52 and 53 are performed by using a double pipe 60. The upper end of the double pipe 60 extends above the revolving motor and the rotation motor outside the container body, and the upper end is connected to an external pipe fixed using a rotary joint (not shown). I have. The lower end of the double pipe 60 is extended to the lower surface of the first gear box 10. The lower end of the double pipe 60 is connected to the cooling medium inflow path 71 and the outer pipe 62 is connected to the cooling medium outflow path 72. It is connected to the.

As described above, the cooling medium is supplied to the double pipe 6 provided in the through hole formed in the rotation driving force transmission shaft 22.
The cooling medium is supplied from the inner pipe 61 to the cooling jackets 51, 52, 53 via the cooling medium inflow path 71. The medium (hereinafter, also referred to as “used medium”) circulated through the cooling jackets 51, 52, and 53 to cool the surface of the second gear box 20 is used as a cooling medium outflow path (used). Through the outer pipe 62 of the double pipe 60 through the used medium outlet channel 72. Alternatively, after being cooled by performing a heat exchange process, the cooling jacket 51 and the cooling jacket 51 are again provided as the cooling medium via the inner pipe 61 and the cooling medium inflow passage 71.
52 and 53 are supplied.

First to third cooling jackets 51, 52, 53
Are provided with cooling medium inflow portions 51b, 52b, and 53b, which are portions through which the cooling medium flows, respectively.
Cooling medium outflow portions 51c, 5 which are portions through which the cooling medium (used medium for each of the jackets 51, 52, 53) flows out.
2c and 53c are provided.

The inner pipe 61 is connected to one end of a cooling medium inflow path 71 via an elbow or the like, and the other end of the cooling medium inflow path is also connected to a third cooling jacket 53 via an elbow or the like.
Is connected to the cooling medium inflow portion 53b. The cooling medium outflow path 53c of the third cooling jacket 53 is connected to one end of the first cooling medium circulation path 54 via an elbow or the like, and the other end of the first cooling medium circulation path 54 also A cooling medium inflow portion 51 of the first cooling jacket 51 via an elbow or the like.
b. The cooling medium outlet 51c of the first cooling jacket 51 is connected to one end of a second cooling medium circulation path 55 via an elbow or the like, and the other end of the second cooling medium circulation path 55 also The second cooling jacket 52 is connected to a cooling medium inflow portion 52b via an elbow or the like. Further, the cooling medium outlet 52c of the second cooling jacket 52
Is connected to one end of a cooling medium outflow path 72, and the other end of the cooling medium outflow path 72 is connected via a piping member such as an elbow.
It is connected to the outer tube 62.

Next, the flow of the cooling medium will be described with reference to FIG. FIG. 6 is a schematic perspective view mainly showing cooling means such as cooling jackets 51, 52, 53 provided in the second gear box.

In FIG. 6, the cooling medium supplied from the cooling medium inflow passage 71 is first supplied to the cooling medium inflow section 5.
3b flows into the third jacket 53 for cooling. And
The cooling medium flowing into the third cooling jacket 53 suppresses heat generation by a lip seal or the like, and then the cooling medium outflow portion 53c
Through the first cooling medium circulation path 54. Here, in order to realize effective heat exchange in the third cooling jacket 53, a cooling medium inflow portion 53b is provided below the third cooling jacket 53, and the third cooling jacket 53 is provided.
The cooling medium outflow portion 53c is provided on the upper side.

Next, the cooling medium that has flowed out to the first cooling body circulation path 54 flows into the first cooling jacket 51 via the cooling medium inflow portion 51b. Then, the cooling medium that has flowed into the first cooling jacket 51 suppresses heat generation from bearings and the like, and then flows out to the second cooling medium circulation path 55 via the cooling medium outflow portion 51c. even here,
As in the case of the third cooling jacket 53, in order to realize effective heat exchange in the first cooling jacket 51, a cooling medium inflow portion 51b is provided below the first cooling jacket 51. Is established,
The cooling medium outflow portion 51c is provided on the upper side. Further, in order to prevent a short path of the cooling medium and to perform effective cooling (to perform effective heat exchange), as shown in FIGS. 1 and 2, a first cooling jacket 51 is provided. A partition plate 51a is provided inside.

Next, the cooling medium that has flowed out to the second cooling outer body circulation path 55 flows into the second cooling jacket 52 via the cooling medium inflow portion 52b. Then, the cooling medium that has flowed into the second cooling jacket 52 suppresses heat generation from bearings and the like, and then flows out to the cooling medium outflow path 72 via the cooling medium outflow portion 52c. Here, as in the case of the first and third cooling jackets 51 and 53, in order to realize an effective heat exchange in the second cooling jacket 52, the second cooling jacket 52 is provided. The cooling medium inflow part 52 is located on the lower side.
b, and a cooling medium outflow portion 52c is provided on the upper side.
Further, similarly to the first cooling medium, in order to prevent a short path of the cooling medium and to perform effective cooling (to perform effective heat exchange), the second cooling jacket 52 is provided. A partition plate (not shown) is provided inside.

Next, the used medium that has flowed out of the cooling medium flow path 72 is sent out of the mixing dryer through the outer pipe 62. The used medium sent to the outside of the mixing dryer is subjected to a heat treatment or the like for a reusable medium and supplied again as a cooling medium from the inner tube 61. After appropriate treatment for disposal, it is disposed.

As described above, in the present embodiment, the second gear box 2 which is one of the parts where heat is most likely to be generated.
0, first to third cooling jackets 51, 52, 53 are provided, and the first to third cooling jackets 51, 52, 53 are provided.
The cooling medium inflow path 71 and the cooling medium outflow path 72 are connected to each other to constitute a cooling means. Therefore, according to the present embodiment, even when the substance to be stirred such as a powder or the like is wound up during the stirring and adheres to the second gear box 20, the second gear box 20 is effective by the cooling means. Because of the cooling, it is possible to prevent the temperature of the powder and the like from rising, and to prevent the powder and the like from deteriorating and melting.

Also, in the present embodiment, in order to cope with heat generated from the bearing provided in the second gear box 20 (to prevent a temperature rise on the surface of the gear box 20 due to heat generated in the bearing). , The first and second cooling jackets 51,
52 is provided to cope with the heat generated by the lip seal that seals the second gear box 20 and the stirring shaft 40 (to prevent a temperature rise near the lower surface of the gear box 20 due to the heat generated by the lip seal). For this reason, a third cooling jacket 53 is provided on the lower surface of the second gear box 20. Therefore, according to the present embodiment, the second gear box 20 can be cooled effectively.

In the present embodiment, the cooling jacket is divided into first to third cooling jackets 51, 52, and 53, and the second cooling jacket, which is the inner wall surface side of the container body. No cooling jacket is provided on the surface of the gear box 20. Therefore, in the present embodiment, since the clearance between the second gear box 20 and the inner wall of the container body is maintained, the rotation of the stirring shaft 40 is not affected and the revolving motion is not affected. Cooling means can be easily attached to an existing mixing dryer.

Further, in this embodiment, among the divided cooling jackets 51, 52 and 53, the cooling jackets 51, 52 and 53 are provided on the lower surface of the second gear box 20 to which the powder or the like during stirring is most likely to adhere. The cooling medium starts to circulate from the third cooling jacket 53. Therefore, according to the present embodiment, since the lower surface of the second gear box 20 is effectively cooled, even when powder or the like adheres to this portion,
It is possible to minimize the influence of heat on the granules and the like, and to prevent deterioration and melting of (the product of) the granules and the like.

In this embodiment, the double pipe 60 for supplying the cooling medium and recovering the used medium is provided so as to pass through the center positions of the revolving drive shaft 11 and the rotation drive shaft 21. The end of the double pipe 60 extended to the outside of the mixing dryer is connected to an external pipe via a rotary joint. Therefore, according to the present embodiment, it is possible to configure a cooling unit that can effectively circulate the cooling medium around the stirring shaft 40 that is rotating and revolving.

The cooling medium used in the present embodiment includes ethylene glycol in addition to water.

In this embodiment, the outer jackets 51 and 5 for cooling are provided on the lower surface and the side surface of the second gear box 20.
Although the case where 2 and 53 are provided has been described, the present invention is not limited to this configuration. Therefore, for example, a cooling jacket may be provided on the upper surface of the second gear box 20, or a cooling jacket may be provided so as to cover the entire second gear box 20. With such a configuration, the cooling effect on the heat source can be further improved. However, in this case, the rotation of the stirring shaft 40
It should be noted that the position and structure do not affect the orbital movement. In the present embodiment, a cooling jacket can be easily provided on the upper surface of the second gear box 20.

Further, in this embodiment, the case where the cooling jacket is provided only in the second gear box 20 has been described, but the present invention is not limited to this configuration. Therefore, for example, a cooling jacket capable of circulating the cooling medium is provided for the first gear box 10 or the driving force transmission hollow shaft 30, and a cooling medium inflow path and an outflow path are provided for the cooling jacket. You may. With such a configuration, it is possible to further suppress the thermal influence on the powder and the like at the time of stirring, and to obtain a mixing and drying machine that can more effectively prevent deterioration and melting of the powder and the like. It is possible.

Further, in this embodiment, the case where the cooling means is provided at any place of the driving force transmitting means has been described, but the present invention is not limited to this configuration. Therefore, for example, a cooling means for circulating a cooling medium with respect to the stirring shaft may be provided to cool the stirring shaft itself. With this configuration, it is possible to effectively prevent the temperature of the mixture such as the powder from rising, as in the above embodiment.

Further, in the present embodiment, the case where the cooling medium is circulated in the cooling jacket to cool the heat source has been described. However, the present invention is not limited to this configuration. Injecting such gas into the heat source,
A configuration in which the heat source is cooled may be used.

[0059]

As described above, according to the present invention,
By providing cooling means for the heat source inside the mixing dryer, the surface of the driving force transmitting means and the like as the heat source in the container body constituting the mixing dryer is effectively cooled, and
It is possible to obtain a mixing / drying machine capable of preventing a temperature rise of the granular material during the drying treatment and preventing deterioration and melting of the granular material (product).

[Brief description of the drawings]

FIG. 1 is a partially enlarged view of a driving force transmitting unit and a peripheral member constituting a mixing dryer according to an embodiment of the present invention.

FIG. 2 is a partial side view of the driving force transmitting means shown in FIG.

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a sectional view taken along line VV of FIG. 2;

FIG. 6 is a schematic perspective view around a second gear box according to the embodiment of the present invention.

FIG. 7 is a schematic side view of a mixing dryer according to the related art.

FIG. 8 is a partially enlarged cross-sectional view of a driving force transmitting means constituting the mixing and drying machine of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 First gear box 11 Revolution drive shaft 20 Second gear box 21 Rotation drive shaft 22 Rotation drive force transmission shaft 30 Drive force transmission hollow shaft 40 Stirring shaft 51 First cooling jacket 51a Partition plate 51b Coolant inflow portion 51c Cooling medium outflow section 52 Second cooling jacket 52b Cooling medium inflow section 52c Cooling medium outflow section 53 Third cooling jacket 53b Cooling medium inflow section 53c Cooling medium outflow section 54 First cooling medium circulation path 55 Second Cooling medium circulation path 60 double pipe 61 inner pipe 62 outer pipe 71 cooling medium inflow path 72 cooling medium outflow path

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) // F26B 21/04 F26B 21/04 CF term (reference) 3J063 AA40 AB02 BA15 CA10 CB01 CB41 XH01 XH02 XH13 XH22 XH42 XH43 3L113 AA04 AC21 AC45 AC46 AC58 AC61 AC63 AC67 AC73 AC90 BA02 CA15 DA07 DA24 4G037 CA02 EA02 4G078 AA22 AB09 AB20 BA05 DB05 EA03

Claims (6)

[Claims] 1. A mixing and drying machine comprising: a container main body; a stirring shaft (40) for rotating and revolving within the container main body; and a driving force transmitting means for transmitting a driving force to the stirring shaft (40). A mixing / drying machine, wherein a cooling means for cooling the heat source is provided for a heat source that thermally affects a substance to be stirred in the container body. 2. The heat source is at least one of the stirring shaft (40) and the driving force transmitting means.
3. The mixing dryer according to item 1. 3. The agitation shaft (4)
0), a first gear box (10) positioned substantially at the center of revolution when revolving, and a second gear box (20) positioned substantially at the center of rotation when rotating the stirring shaft (40).
And a driving force transmitting hollow shaft (3) connecting the first gear box (10) and the second gear box (20).
0) and the first gear box (1).
The mixing / drying device according to claim 2, wherein the cooling means is provided for at least one of 0), the second gear box (20), and the driving force transmitting hollow shaft (30). 4. A cooling jacket attached to the heat source, the cooling medium being capable of circulating a cooling medium, and a cooling medium inflow path (7) through which the cooling medium flows into the cooling jacket.
The mixing / drying device according to any one of claims 1 to 3, wherein the mixing / drying device is configured by using 1) and a cooling medium outflow passage (72) through which the cooling medium flows out from the cooling jacket. 5. The cooling jacket comprises a plurality of portions (51,
52, 53), and the plurality of parts (5
The mixing dryer according to claim 4, wherein the first dryer and the second dryer are connected by a cooling medium circulation path. 6. The mixing and drying machine according to claim 5, wherein the cooling medium is circulated first to a portion of the plurality of portions (51, 52, 53) which generates the largest amount of heat.