JP2611929B2 - Extraction tank device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extraction tank apparatus for extracting tea, coffee, herbal medicine, and other extracted beverages.

[0002]

2. Description of the Related Art Conventionally, this type of extraction tank apparatus is of a type in which a screw conveyor is rotated only at a position close to the bottom surface of the extraction tank. For this reason, at the time of washing in the tank performed after the extraction operation, it was difficult to wash out fine residue remaining at the bottom of the tank.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel extraction tank apparatus which is designed to make it easier to wash out fine residue remaining on the bottom and to shorten the washing time.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, an extraction tank apparatus according to the present invention receives hot water from a hot water port for extraction and an extraction raw material from an extraction raw material supply device. Is transported over a predetermined time by a screw conveyor that is rotationally driven in the tank over a predetermined period of time, and one end side of the screw conveyor is connected to the extraction tank in a type in which the extract and the raw material lees are recovered from the outlet. The other end side is supported rotatably at a fixed position close to the bottom surface of the extraction tank at a position close to the bottom surface and at a position away from the top.

[0005]

In the embodiment shown in the figure, a trough-shaped extraction tank 3 having a semi-cylindrical bottom surface, whose outer surface is covered with a heating jacket 1 and a number of lid plates 2 are openably and closably mounted on the top surface. The drive motor 5 is mounted on the outer surface of the left end wall of the extraction tank 3 with its rotating shaft 6 protruding into the extraction tank 3.
A bearing device 8 is provided inside the right end wall of the screw conveyor 9 so that the position can be changed up and down by a hydraulic cylinder 7 and a screw conveyor 9 is inserted into the extraction tank 3 to rotate one end of a central shaft 10 of the screw conveyor 9 in the above-mentioned manner. It is connected to the projecting end of the shaft 6 via a rotary joint 11, and the other end is similarly supported by a bearing device 8.

In the figure, reference numeral 13 denotes an open type auxiliary bearing (stopper), 14 denotes a discharge port for discharging raw material and extract together, 15 denotes a rotary cleaning liquid jetting pipe having a large number of small holes 16, 17. Indicates a stand.

According to the present invention, a motor, air pressure, or the like can be used instead of the hydraulic cylinder 7.

When the extraction operation is performed, the bearing device 8 is lowered to the screw conveyor 9 so as to be close to the bottom surface of the extraction tank 3. It is used as a state separated upward.

[0009]

The present invention receives hot water from a hot water spout for extraction and an extraction material from an extraction material supply device, and the isothermal water and the extraction material are rotated by a screw conveyor in a tank for a predetermined time to a discharge end side. In the extraction tank of the type that collects the extract and the raw material lees from the outlet, the one end side of the screw conveyor is close to the bottom surface of the extraction tank and the other end side is at a position away from and above the extraction tank. It is characterized in that it is rotatably supported at a fixed position close to the bottom surface of the screw conveyor, so that one end side of the screw conveyor can be used away from the bottom surface of the extraction tank when performing a washing operation. In this case, the clearance between the bottom of the extraction tank and the screw conveyor is widened, and the flow rate of the cleaning liquid flowing through this section is increased. Due to the increase in the flow rate, the fine residue remaining at the bottom of the extraction tank is easily washed away. Further, the washing time can be shortened by facilitating the washing.

[0010]

Since the extraction tank apparatus according to the present invention has the above-mentioned structure, it has excellent effects such as easy removal of fine residue remaining at the bottom and shortening of the cleaning time. Things.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of an extraction tank device according to the present invention.

FIG. 2 is a cross-sectional view of a location along the line AA of FIG. 1;

FIG. 3 is a sectional view showing a state where the screw conveyor is moved upward.

FIG. 4 is a cross-sectional view along the line BB in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Jacket 2 Cover plate 3 Extraction tank 5 Driving motor 6 Rotary shaft 7 Hydraulic cylinder 8 Bearing device 9 Screw conveyor 10 Center shaft 11 Rotary joint 13 Auxiliary bearing 14 Outlet 15 Spouting pipe 16 Small hole 17 Stand

Claims (1)

(57) [Claims] 1. A predetermined time is taken toward a discharge end by a screw conveyor that receives hot water from a hot water spout for extraction and an extraction raw material from an extraction raw material supply device and rotates the isothermal water and the extraction raw material in a tank. In an extraction tank of a type that transports and collects extract and raw material lees from an outlet, one end side of the screw conveyor is close to the bottom surface of the extraction tank, and the other end side is the bottom surface of the extraction tank at a position away from and above. An extraction tank device characterized in that it is rotatably supported at a fixed position close to the device.