JPH11332467A - Tea leaf grinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tea leaf grinder designed to raise the efficiency of grinding tea leaves and simplify the transfer and containment of the resulting tea leaf fine powder into a tea container. SOLUTION: This tea leaf grinder has such a scheme that a drum support frame 16 having a horizontal shaft 17 transmittably linked to a drum support frame-driving motor 13 and equipped with a drum-driving motor 18 is supported via the horizontal shaft 17 upon a machine frame 11 equipped with the motor 13; the adjacent part between the machine frame 11 and the horizontal shaft 17 is provided with a slip ring mechanism 15 for supplying power to the motor 18, and a drum 21 loaded with grinding balls 26 and having a mouth part 22 for selectively fitting a lid 23 and a tea container 28 and a basal shaft 24 transmittably linked to the motor 18 is supported upon the drum support frame 16 in a cantilever fashion via the basal shaft 24 in such a state that the axial central part cross at right angle with the axis of the horizontal shaft 17; when tea leaves are to be ground, the drum 21 with the lid 23 is revolved simultaneously around the axis and the horizontal axis, and when the resulting tea leaf fine powder is to be transferred and contained into the tea container 28, the drum 21 with the tea container 28 is revolved around the horizontal axis.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tea leaf crusher for crushing tea leaves for producing matcha (powder tea).

[0002]

2. Description of the Related Art The inventor of the present invention has previously disclosed a tea crusher of this type on a machine frame provided with a drum support frame drive motor as shown in Japanese Patent Application Laid-Open No. 8-108086. A drum support frame having a horizontal shaft that is operatively connected to the drum and having a drum drive motor attached thereto is swingably supported up and down. The drum support frame has a lid and a filter (a sieve mesh) at a distal end and a proximal end, respectively. ) And a base shaft that is communicatively connected to the drum drive motor, and has a polygonal cross-section drum in which crushing balls are loaded, in a direction perpendicular to the axis of the horizontal axis. We proposed a ball mill type that cantileverly supports via a base shaft in a state of extending.

[0003] The ball mill-type tea leaf crusher proposed above is
Through swinging of the drum support frame by rotation of the drum support frame drive motor at a fixed angle, a predetermined amount of tea leaves are loaded into the drum with the mouth of the drum facing upward, and the mouth is closed. After being closed by the lid, the drum is driven horizontally by the rotation of the drum support frame in the reverse direction by the rotation of the drum support frame in the reverse direction. By rotating around the axis for a predetermined period of time, the impact and frictional action through the rolling of the crushing ball are repeatedly applied to the tea leaves to crush the tea leaves, and thereafter the drum support frame drive motor rotates at a constant angle of regular rotation. Through the swinging of the drum support frame due to the movement and the reverse rotation, once turn the mouth of the drum upward, replace the lid with a filter, then turn the mouth of the drum downward, Face the mouth of the installed tea container and In this state, the fine powder of tea leaves, namely, the rotation of the drum around the axis of the drum due to the operation of the drum drive motor or the drum support frame drive motor, and the back and forth (or up and down) swing (vibration) around the horizontal axis perpendicular to the drum axis, The tea leaves are used in a form of discharging green tea into a tea container through a filter. According to this tea leaf crusher, the tea leaves can be crushed with high efficiency and without scattering the fine powder of the tea leaves. .

[0004]

As described above, the above-described tea leaf crusher has a practically useful action and effect. However, the present inventor has further improved the tea leaf crushing efficiency. The present invention has been completed as a result of intensive studies with a view to easily transferring and storing fine powder of tea leaves from the drum to the tea container without scattering to the surroundings.

[0005]

According to the present invention, there is provided the following:
Has a horizontal shaft that is operatively connected to the drum support frame drive motor, and rotatably supports a drum support frame that has a drum drive motor attached to the machine frame provided with the drum support frame drive motor. A slip ring mechanism constituting a power supply circuit for a drum drive motor attached to the drum support frame is provided adjacent to the horizontal axis of the drum support frame.Furthermore, the drum support frame has a lid at each of a distal end and a base end. A drum having a polygonal cross section having a mouth for selectively attaching a filter and a base shaft operatively connected to the drum drive motor and having crushing balls loaded therein, and an axis of a horizontal axis of a drum support frame. A tea leaf pulverizer that is supported in a cantilever manner via a base shaft in a state extending in a direction perpendicular to the above.

In this tea leaf crusher, the tea leaves are crushed by rotating the drum around its axis by the operation of the drum drive motor and rotating the drum around the horizontal axis of the drum support frame by the operation of the drum support frame drive motor. The transfer and storage of the fine powder of tea leaves from the drum to the tea container is performed in the same manner as that of the already proposed one, while the rotation is performed in parallel with the rotation about the horizontal axis of the drum. The crushing ball and the tea leaves repeat the spiral rolling movement in which the rolling movement component in the direction around the axis of the drum and the rolling movement component in the axial direction of the drum are combined in both axial directions after the drum. And the impact and friction that the tea leaves repeatedly receive from the ball extends throughout the whole,
It was found that the grinding efficiency was further improved.

According to the present invention, secondly, a drum supporting frame having a horizontal shaft communicatively coupled to the drum supporting frame drive motor and having a drum driving motor attached to the machine frame provided with the drum supporting frame driving motor. Is rotatably supported, and a slip ring mechanism that constitutes a power supply circuit for a drum drive motor attached to the drum support frame is provided adjacent to the horizontal axis of the machine frame and the drum support frame.
A cross section having a mouth for selectively attaching a lid, a filter, and a tea container to each of the distal end and the proximal end, a base shaft that is operatively connected to the drum drive motor, and a crushing ball loaded therein. Provided is a tea leaf pulverizer in which a polygonal drum is supported in a cantilever manner via a base shaft in a state of extending in a direction orthogonal to an axis of a horizontal axis of a drum support frame.

In this tea leaf crusher, the tea leaves are crushed by simultaneous rotation about the axis of the drum and about a horizontal axis perpendicular to the axis by the operation of both motors. In general, the drum is moved and stored in a state in which a filter and a tea container are attached to the mouth of the ram instead of the lid, and the drum supporting frame drive motor rotates the drum supporting frame around the horizontal axis. It is performed by rotating around the horizontal axis, according to this configuration, fine powder of tea leaves do not scatter around,
It is automatically moved from the drum to the tea container through the filter by centrifugal force.

In the tea leaf crusher of the present invention, generally, rolling movement of balls and tea leaves in a drum effective for crushing tea leaves and generation of centrifugal force effective for transferring and storing fine powder of tea leaves to a tea container. In order to make the structure compact and the like, the drum is supported on the drum support frame such that the axis of the drum is orthogonal to the axis of the horizontal axis of the drum support frame at the center in the axial direction of the drum.

In this tea leaf crusher, the rotation speed around the axis of the drum and the rotation speed of the drum around the horizontal axis of the drum support frame can be appropriately selected.
Generally, the former can be larger than the latter, for example, the former can be 2.5 to 3 times the latter.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a tea leaf crusher according to the present invention will be described below with reference to the drawings.

In the illustrated tea leaf crusher, the machine casing 11
A C-shaped drum support frame having a pair of side frames 12 facing each other at a horizontal interval and having a horizontal shaft 17 extending concentrically on both sides and a drum drive motor 18 provided at the center. A drum 16 is rotatably supported about its axis via a horizontal shaft 17, and is operatively connected to the upper part of one side frame 12 by a worm gear mechanism 14 on one side of the horizontal shaft 17. Support frame drive motor 1
3 are installed.

The horizontal shaft 17 on one side of the drum supporting frame 16 and the upper part of the side frame 12 are provided with a slip ring and a leaf spring brush (both not shown) attached to each other so as to face each other. A slip ring mechanism 15 is provided to supply power to a drum drive motor 18 rotatable with respect to the machine frame 11 via a horizontal shaft 17 from the stationary machine frame 11 side.

Further, at the center of the drum support frame 16, an opening 22 for selectively attaching a lid 23, a filter 27, and a tea container 28 via a flange bolt is provided at a front end portion, and a chain transmission mechanism 25 is provided at a base portion. It has a base shaft 24 which is operatively connected to the drum drive motor 18 and extends concentrically.
A drum 21 having a hexagonal cross section in which a predetermined amount of crushing balls 26 are inserted is orthogonal to the axis of the horizontal shaft 17 of the drum supporting frame 16 at the center in the axial direction via the base shaft 24. Supported in state.

When the tea leaves are crushed by this tea leaf crusher, first, the rotation of the drum support frame 16 around the axis of the horizontal shaft 17 of the drum support frame 16 by the operation of the drum support frame drive motor 13 is performed. Then, the mouth 22 of the drum 21 is directed upward, and in this state, a predetermined amount of tea leaves is loaded into the drum 21 from a cutout gate or the like of the tea hopper, and the mouth 22 is closed with the lid 23.

In this state, by simultaneously operating both the drum drive motor 18 and the drum support frame drive motor 13, the drum 21 is rotated around its axis via the chain transmission mechanism 25, and simultaneously the worm gear mechanism 14 Through the horizontal axis 17 of the support frame 16, the drum 21 is placed at a central portion in the axial direction at a horizontal axis 17 orthogonal to the axis thereof.
, For example, at a speed of １ ／ to の of a rotation speed (rpm) around the axis of the drum 21. As a result, the ball 26 and the tea leaves in the drum 21
The ball 26 repeatedly applies intense impact and friction over the entirety of the tea leaf, so that the tea leaf is crushed to a green tea state in a shorter time. You.

After the crushing of the tea leaves is completed, the operation of the drum supporting frame drive motor 13 alone causes the drum 21 to be ground.
The mouth 22 with the lid 23 is located above,
After replacing the lid 23 of the mouth 22 with the filter 27 and the tea container 28, the drum 21 and the drum support frame 16 are moved together with the drum support frame 16 through the operation of the drum support frame drive motor 13.
7 about the axis. As a result, the fine powder of tea leaves in the drum 21, that is, matcha, is automatically transferred into the tea container 27 through the filter by centrifugal force.

The tea leaf crusher of the present invention further comprises a lid,
Attach the filter and tea container to the mouth of the drum through a hook-shaped latch or other various fasteners, or transfer the fine powder of tea leaves from the drum to the tea container as necessary. The present invention can be implemented in various modes such as operating the drum drive motor to rotate the drum around its axis, and is not limited to the illustrated embodiment.

[0019]

As is apparent from the above description, the tea leaf crusher of the present invention can perform the crushing of the tea leaves with higher efficiency, while the fine powder of the tea leaves is transferred from the drum to the tea container. A practically useful effect is achieved in that relocation and storage can be performed extremely easily without any scattering around.

[Brief description of the drawings]

FIG. 1 is a plan view showing a horizontal extending point of a drum when a tea leaf is crushed in an embodiment of a tea leaf crusher according to the present invention.

FIG. 2 is a partially cutaway side view corresponding to FIG.

FIG. 3 is a front view corresponding to FIG.

FIG. 4 is a plan view showing a state where the tea container is attached to the drum.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Machine frame 12 Side frame 13 Drum support frame drive motor 14 Worm gear mechanism 15 Slip ring mechanism 16 Drum support frame 17 Horizontal axis 18 Drum drive motor 21 Drum 22 Mouth 23 Lid 24 Main shaft 25 Chain transmission mechanism 26 Crushing ball 27 Filter 28 tea containers

Claims (3)

[Claims] An apparatus frame provided with a drum support frame drive motor has a horizontal shaft communicatively connected to the drum support frame drive motor and rotatably supports a drum support frame provided with a drum drive motor. A slip ring mechanism that constitutes a power supply circuit for a drum drive motor attached to the drum support frame is provided in a portion adjacent to the horizontal axis of the frame and the drum support frame,
Further, the drum support frame has a mouth portion at which a lid and a filter can be selectively attached to a distal end portion and a proximal end portion respectively, and a base shaft which is operatively connected to the drum drive motor, and crushing balls are loaded therein. With the cross section of the polygonal drum stretched in a direction perpendicular to the axis of the horizontal axis of the drum support frame,
A tea leaf crusher supported cantilevered through a base shaft. 2. A machine frame provided with a drum support frame drive motor, rotatably supporting a drum support frame having a horizontal shaft communicatively connected to the drum support frame drive motor and having a drum drive motor attached thereto. A slip ring mechanism that constitutes a power supply circuit for a drum drive motor attached to the drum support frame is provided in a portion adjacent to the horizontal axis of the frame and the drum support frame,
Further, the drum support frame has a mouth at which a lid, a filter and a tea container can be selectively attached at a distal end portion and a proximal end portion, and a base shaft which is operatively connected to the drum drive motor, and has a grinding ball inside. A tea leaf pulverizer comprising a drum having a polygonal cross section and a cantilever supported through a base shaft in a state extending in a direction perpendicular to the axis of the horizontal axis of the drum support frame. 3. The tea leaf according to claim 1, wherein the drum is supported on the drum support frame such that the axis of the drum is orthogonal to the axis of the horizontal axis of the drum support frame at the center in the axial direction of the drum. Crusher.