JPH05292883A - Extraction tank device - Google Patents

Abstract

PURPOSE:To provide the extraction tank device preventing fine residues from leaving on the bottom of the extraction tank on its cleaning, and used for the extraction of teas, coffee, Chinese medicines and other extracted beverages. CONSTITUTION:A screw conveyer 10 is rotatably disposed at a placed near to the bottom of an extraction tank 3 or at a place apart from the bottom. Since the screw conveyer can be utilized in the state apart from the bottom of the extraction tank on the cleaning work of the device, the clearance between the bottom of the extraction tank and the screw conveyor is enlarged to increase the flow volume of a cleaning solution flowing the place. By the increase in the flow volume, remaining fine residues on the bottom of the extraction tank are readily washed out. The facilitation of the washing out of the residues permits to shorten the cleaning time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extraction tank device used for extracting teas, coffee, herbal medicines and other extracted beverages.

[0002]

2. Description of the Related Art Conventionally, this type of extraction tank device has been of a type in which a screw conveyor is rotationally driven only at a position close to the bottom surface of the extraction tank. For this reason, when cleaning the inside of the tank after the extraction work, it was difficult to wash away the fine meal (dust) 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 device in which the cleaning time is shortened by devising a device for facilitating the washing of fine dregs remaining on the bottom.

[0004]

In order to achieve the above object, an extraction tank apparatus according to the present invention receives hot water from a hot water spout for extraction and an extraction raw material from an extraction raw material supply device, In the extraction tank of the type in which the screw conveyor rotating in the tank is transferred to the discharge end side over a predetermined time, and the extract and the raw meal are collected from the discharge port,
At the position where the screw conveyor is close to the bottom of the extraction tank,
In addition, each of them can be driven to rotate at a position separated upward.

[0005]

In the embodiment shown in the drawings, a gutter-shaped extraction tank 3 having a semi-cylindrical bottom surface is provided, which has an outer surface covered with a heating jacket 1 and a top surface to which a large number of lid plates 2 are openably and closably attached. A pair of bearing devices 6 and 7 are attached to both end walls 4 and 5 of the extraction tank 3 so as to be vertically movable by interlocking hydraulic cylinders 8 and 9, and a screw conveyor 10 is provided in the extraction tank 3. The screw conveyor is inserted and the center shaft 11 of the screw conveyor 10 is rotatably inserted into the bearing devices 6 and 7 so as to extend horizontally, and one bearing device 7 is provided with a rotational force with respect to the center shaft 11. It is equipped with 10 drive motors 12.

In the figure, reference numeral 14 is a discharge port for discharging the raw meal and the extraction liquid together, 15 is a pipe for jetting a rotary cleaning liquid having a large number of small holes 16, and 17 and 18 allow vertical movement of the central shaft 11. A long hole, and 19 indicates a mount.

In the present invention, a motor, air pressure or the like can be used instead of the hydraulic cylinders 8 and 9.

When performing the extraction operation, the bearing devices 6 and 7 are set in the lowered position to bring the screw conveyor 10 close to the bottom surface of the extraction tank 3, and when the cleaning work is performed, the bearing devices 6 and 7 are set in the raised position.
Is used as a state separated upward from the bottom surface.

[0009]

As described above, the present invention receives hot water from the hot water outlet for extraction and the extraction raw material from the extraction raw material supply device, and the hot water and the extraction raw material are supplied to the discharge end side by the screw conveyor rotating in the tank. In an extraction tank of a type in which it is transferred over time and the extraction liquid and raw meal are collected from the discharge port, the screw conveyor can be rotationally driven at a position close to the bottom surface of the extraction tank and at a position separated upward. Therefore, when performing a cleaning operation, the screw conveyor can be used in a state of being separated from the bottom surface of the extraction tank. In this way, the clearance between the bottom of the extraction tank and the screw conveyor becomes wider, and the flow rate of the cleaning liquid flowing through this portion increases. Due to this increase in flow rate, the fine meal remaining at the bottom of the extraction tank is easily washed away. Further, the cleaning time can be shortened by facilitating the rinsing.

[0010]

Since the extraction tank device according to the present invention has the above-mentioned structure, it has an excellent effect that the fine lees remaining on the bottom can be easily washed away and the washing time can be shortened. It is a thing.

[Brief description of drawings]

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

FIG. 2 is a sectional view of a portion taken along the line AA in FIG.

FIG. 3 is a cross-sectional view showing the screw conveyor moved upward.

[Explanation of symbols]

 1 Jacket 2 Lid Plate 3 Extraction Tank 4 End Wall 5 End Wall 6 Bearing Device 7 Bearing Device 8 Hydraulic Cylinder 9 Hydraulic Cylinder 10 Screw Conveyor 11 Center Shaft 12 Motor 14 Discharge Port 15 Cleaning Liquid Spouting Pipe 16 Small Hole 17 Long Hole 18 Long Hole 19 mount

Claims (1)

[Claims] 1. Received hot water from a hot water outlet for extraction and an extraction raw material from an extraction raw material supply device, and transferred the hot water and the extraction raw material to a discharge end side over a predetermined time by a screw conveyor rotating in a tank. In the extraction tank of the type in which the extraction liquid and the raw meal are collected from the discharge port, the screw conveyor can be rotationally driven at a position close to the bottom surface of the extraction tank and at a position separated upward. Extraction tank device.