JPH0553532B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a stirring device that stirs powder, liquid, etc. by rotating a rotary fork.

<Conventional technology> Conventionally, powder drying equipment has been used, for example, to dry powder while heating it in a stirring tank, but this equipment has a large number of rods protruding radially around a rotating shaft. A rotary fork is installed in the stirring tank, a heating source is installed below the tank, and the powder in the tank is stirred and dried by heating while rotating the rotary fork at a low speed.

<Problems to be Solved by the Invention> However, this type of powder drying device heats the stirring tank from outside, so powder adheres to the bottom of the stirring tank during the drying process, making stirring impossible. There was a problem that heat drying could not be carried out efficiently because of the drying process and because it took a long time for the heat to reach the inside of the powder. On the other hand, this type of stirring tank is also used to cool powder, etc. by stirring it with a rotating fork. There was an issue where it took too long to cool down.

<Means for Solving the Problems> The present invention has been made to solve the above problems, and is capable of efficiently stirring powders or liquids, heating, drying, cooling, or air-laying them. An object of the present invention is to provide a stirring device that can efficiently perform mixing, etc.

For this purpose, the stirring device of the present invention is a stirring device that stirs powder, liquid, etc. by rotationally driving a rotating fork with a stirring member protruding from the rotating shaft, and an air passage is provided in the rotating shaft and the stirring member. At the same time, an air hole for blowing out the air supplied from the air passage is formed in a part of the stirring member, and the air hole is provided on the opposite rotation direction side of the stirring member, and the air hole for blowing out the air supplied from the air passage is provided. A rotating shaft is horizontally supported to vertically rotate the agitating member, and a valve is disposed in the air passage of the agitating member to close the passage when the agitating member is rotated to an upward position. be done.

<Function> The stirring device configured as described above is installed, for example, in a stirring tank for powder drying, and the powder is placed in the tank, and while the rotary fork is driven to rotate at a low speed,
Air is supplied from an air supply source and ejected from the air holes of the stirring member. If the air supplied to this air hole is dry heated air, it is possible to efficiently dry the powder while stirring the powder, and since the air hole is provided on the side opposite to the rotation direction of the stirring member,
This prevents powder from entering the interior through the air holes. Furthermore, by blowing out cold air from the air holes, hot powder can be efficiently cooled while stirring the powder.

Furthermore, the rotation shaft is arranged horizontally so as to rotate the stirring member vertically, and a valve is provided in the air passage of the stirring member to close the passage when the stirring member is rotated to the upper position. Even if stirring is performed with the upper part of the stirring member exposed from the powder, etc., and the air hole of the stirring member rotated upward is exposed to the atmosphere, the air passage of the air hole is closed by the valve. A large amount of air is not blown out from the air hole opened to the atmosphere, and air is normally blown out from the air hole of the stirring member in the powder, so that the powder can be heated and dried or cooled properly.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows a perspective view of the stirring device, where 1 is a rotating fork. The rotary fork 1 is constructed by protruding tubular stirring members 12 radially from the outer periphery of a tubular rotating shaft 11. The shaft and the internal space of the stirring members communicate as an air passage 14, and each stirring member 12 A plurality of air holes 13 are bored on the opposite rotation direction side.

A rotating shaft 11 of the rotating fork 1 is rotatably supported by bearings 2 and 3, and one end of the rotating shaft 11 protruding outward from the bearings is linked to a motor 4 with a speed reducer via a sprocket and a chain. The rotary fork 1 is rotationally driven by the motor 4 at a low speed.

Further, an air pipe 6 is connected to the other end of the rotating shaft 11 via a rotary joint 5, and the air pipe 6 is connected to a blower 8 serving as an air supply source via a heater 7 having a built-in heater or the like. By operating the blower 8 and the heater 7, heated dry air is sent to the air hole 13 of the rotary fork 1 through the air pipe 6.

The stirring device constructed in this way is installed by putting the rotating fork 1 into the stirring tank 10 as shown in Fig. 2, and the stirring tank 10 contains powder such as various grains or okara. Can be put in. Then, the rotary fork 1 rotates when the motor 4 is started, and heated air is supplied into the air passage 19 through the air pipe 6 when the blower 8 and the heater 7 are started, and the heated air is supplied to the air hole of the stirring member 12. 13 into the tank. Since the rotating fork 1 blows out heated air while rotating through the powder at a low speed, the powder is well heated and dried while being stirred. Further, since the air holes 13 of the stirring member 12 are provided on the side opposite to the rotation direction thereof, powder hardly enters the air holes, and clogging of the air holes 13 is prevented.

For example, when okara containing useful bacteria is placed in a stirring tank and the bacteria are propagated within the okara, the heating temperature of the heater 7 is adjusted to set the ejected air temperature to a predetermined temperature, and the rotating fork 1 is It can also be used for bacterial growth by stirring at a low speed of about once per minute.
Furthermore, when cooling hot granular food or the like, the heater 7 may not be operated and cold air may be blown out from the air hole 13 of the stirring member.

When a small amount of powder is placed in the stirring tank 10 and stirring is performed with a portion of the stirring member 12 exposed in the air, stirring can be performed well, but when the stirring member 13 rotates upward, the air holes 13 is open to the atmosphere. Therefore, a large amount of air is blown out from the open air holes 13 that are easy to come out, and the amount of air blown out from the air holes 13 inside the powder is significantly reduced, reducing the effectiveness of heating, drying, or cooling the powder, etc. Resulting in.

Therefore, as shown in FIG. 3, a valve 25 as shown in FIG. 2 is provided in the air passage 24 of the stirring member 22 in order to stop the air from being ejected from the air hole 23 of the stirring member 22 that has rotated upward. The valve 25 consists of a valve seat part 26 fixed in the base of the stirring member 22, and a valve body 27 inserted movably in the air passage 24 beyond the valve seat part 26, with the stirring member 22 on the upper side. When the valve element 27 rotates to the upright position, the valve element 27 seats under its own weight and closes the valve.

When a rotating fork having the stirring member 22 having such a structure is rotated in the stirring tank 10 and the powder is stirred as shown in FIG. 4, the stirring member 2 rotated upward.
The second air hole 23 is opened to the atmosphere, but the valve 25 at its base is closed by the lowering of the valve body 27, and the supplied air is not blown out from the upper air hole 23. On the other hand, the valve body 27 in the lower stirring member 22 inside the powder moves to the tip due to its own weight, so the valve 25 opens and air is supplied from the air passage.
A large amount of heated air is efficiently blown out into the powder from the air holes 23. Furthermore, if the air pressure is large,
There is a possibility that the upper valve body 27 is lifted by air pressure and air leaks, but this can be prevented by increasing the weight of the valve body 27, and some air leakage is not a problem. It won't happen. Air hole 23
Since it is provided on the opposite side of the rotation direction, clogging of the air holes by powder is prevented in the same way as described above.

The above-mentioned stirring device can be used for air ration in aquaculture tanks, etc., and can efficiently send air into the water by rotating the rotating fork while exposing the upper part of the stirring member to the air. .

<Effects of the Invention> As explained above, according to the stirring device of the present invention, in a stirring device that stirs powder, liquid, etc. by rotationally driving a rotating fork having a stirring member protruding from the rotating shaft, the rotating shaft is An air passage is provided in the stirring member, an air hole for blowing out the air supplied from the air passage is provided on the opposite rotation direction side of the stirring member, and an air supply source for supplying air is connected to the air passage. In order to supply air from an air supply source while rotating the rotary fork at a low speed, and blow the air into the substance to be stirred from the air hole of the stirring member,
If the air to be supplied is dry heated air, it is possible to efficiently dry the powder while stirring it.For hot powder, cold air is blown out from the air hole to dry the powder. It can efficiently cool down the body while stirring it.

Furthermore, since the air holes are provided in the stirring member on the opposite side of the rotation direction, powder does not enter the inside through the air holes, thereby preventing clogging. Furthermore, the rotation shaft is arranged horizontally so as to rotate the stirring member vertically, and a valve is disposed in the air passage of the stirring member to close the passage when the stirring member is rotated to the upper position.
Even if stirring is performed with the upper part of the stirring member exposed from the powder, etc., and the air hole of the stirring member rotated upward is exposed to the atmosphere, the air passage of the air hole is closed by the valve. Therefore, a large amount of air is not ejected from the air hole opened to the atmosphere, and air is ejected normally from the air hole of the stirring member inside the powder, and the powder can be properly heated and dried or cooled. In addition, it is also possible to efficiently perform air ration in aquaculture tanks and the like.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Figure 1 is a perspective view of a stirring device, Figure 2 is a sectional view of a stirring tank using the stirring device, and Figure 3 is a partially enlarged view of a stirring member in another embodiment. Cross-sectional view, FIG. 4 is a cross-sectional view of a stirring tank of another embodiment. 1... Rotating fork, 11... Rotating shaft, 12...
... Stirring member, 13... Air hole, 14... Air passage, 8... Blower (air supply source).

Claims (1)

[Claims] 1. In a stirring device that stirs powder, liquid, etc. by rotationally driving a rotating fork with a stirring member protruding from a rotating shaft, an air passage is provided within the rotating shaft and the stirring member, and air is supplied from the air passage. An air hole for blowing out air is formed in a part of the stirring member,
The air hole is provided on the opposite rotation direction side of the stirring member,
An air supply source for supplying air to the air passage is connected, the rotation shaft is supported horizontally so as to vertically rotate the stirring member, and the stirring member is in an upper position within the air passage of the stirring member. A stirring device characterized by being provided with a valve that closes a passage when rotated.