JPH09122523A - Tea leaves pulverization processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent variation in product sizes even when tea leaves of various sizes coexist by sieving out fine tea leaves from a rotating cylindrical screen and guiding only tea leaves of a fixed size or more to a pulverization processing device on the downstream side to pulverize them. SOLUTION: Tea leaves fed in a hopper 1 are fed into a chute 3 by a vibrating shredder 2, and slip down to a longitudinal hollow cylindrical body 8. The longitudinal hollow cylindrical body 8 is freely rotatably supported by a rotating shaft 22, and net bodies (a), (b), (c) are fitted, to the outer periphery thereof to form screen parts 5-7. By this constitution, three kinds of tea leaves of different particle diameters are separately collected at a time. A cutting blade part 10a equipped with cutting blades 10 coaxially rotatable with the screen parts 5-6 is provided, and is rotated by a motor 14, a pulley 13 and shaft 9, and the tea leaves remaining on the screen are pulverized by this cutting blade part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for crushing tea leaves, which is mainly used for crushing various kinds of tea leaves to be sieved to an appropriate size according to their purpose.

[0002]

2. Description of the Related Art Conventionally, in the process of finishing tea leaves such as green tea, a device called a parallel sieving machine, a rotary sieving machine, and a cutting machine is used to sequentially pass the tea leaves to such a device. There was a work to make the shape and length of the tea leaves uniform.
In each of these devices, even if a certain result can be expected, the accuracy is very rough, and there are many variations in the product size, and the same process is repeated many times. Then, the accuracy must be improved.

In addition, recently, a screen portion of a hollow cylindrical body provided with a net body on the outer periphery and rotatably provided around a cylindrical axis and having one end as a fixed bottom, and a band-shaped member arranged on the inner periphery of the cylinder. An apparatus for crushing tea leaves, which is composed of a cutting blade part that rotates the cutting blade concentrically with the screen part and a shatterproof cover provided outside the screen part, has also been developed and implemented (No. 4-102650). . This device presses tea leaves against the inner wall of the screen part by the centrifugal force of the rotating screen part, and cuts it as it is with the cutting blade part that rotates concentrically, or it is sandwiched between the inner circumference of the screen part and the cutting blade. Then, the cut tea leaves are discharged to the outside of the net by the centrifugal force accompanying the rotation of the screen portion, but such a device is used because tea leaves etc. which are all raw materials are cut by a cutting blade. There is a so-called defect that tea leaves of a size that does not need to be cut become finer, and it is impossible to remove impurities such as fine stones and metal pieces contained in uncut tea leaves, resulting in staying in the screen part forever However, the cutting blade is easily damaged, and the method of feeding tea leaves to the screen is a feeding method using a screw conveyor. There occurred were those having a defect which can not be no smooth tea leaves supply.

[0004]

However, the tea leaf crushing apparatus proposed by the present invention was developed as a result of earnest research in view of the above-mentioned conventional defects, and has different sizes. From the raw materials mixed with tea leaves, only relatively large size tea leaves can be selectively crushed into a predetermined size in one operation, and there is almost no dimensional variation, which is very efficient. An object of the present invention is to provide a tea leaf crushing and processing apparatus that can achieve the intended purpose.

[0005]

In order to effectively achieve the above-mentioned object, in a tea leaf crushing apparatus according to the present invention, a net body c is provided on the outer periphery and is rotated around a cylindrical axis. A screen portion 7 of a hollow cylindrical body 8 which is freely installed horizontally,
The band-shaped cutting blade 10 arranged on the inner circumference of the cylinder is attached to the screen portion 7
In a tea leaf crushing apparatus comprising a cutting blade section 10a which is concentrically rotated with a shatterproof cover 19 provided outside the screen section 7, one or more rotatable cylindrical bodies are provided upstream of the apparatus. 8 of the screen portions 5 and 6 are continuously provided, and fine net leaves are preliminarily sieved by the nets a and b of the continuously provided screen portions 5 and 6, and at the same time, only the tea leaves having a certain size or more are removed. Guide to the crushing device on the downstream side,
This is crushed, and a tea leaf crushing device equipped with a raw material supply device consisting of a hopper 1, a vibration feeder 2, a chute 3 and a fixed bottom 3a on the most upstream side is featured, and the downstream crushing device is closed. The bottom 8a is characterized by a tea leaf crushing device that forms a residual foreign matter discharge hole 18 communicating with the outside.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the apparatus for crushing tea leaves according to the present invention, a screen portion of a hollow cylindrical body provided with a net body on the outer periphery and rotatably provided around a cylindrical axis, It mainly uses a tea leaf crushing device consisting of a band-shaped cutting blade arranged around the circumference and a cutting blade part that rotates concentrically with the screen part, but it is provided upstream of the device in advance to reach the device. , The screen part consisting of one or more cylinders is extended and continuously connected, and the fine net leaves are initially sieved by the mesh of the connected screen parts, and only the tea leaves with a certain size or more are selected. Then, it guides to the above-mentioned pulverization processing device located on the most downstream side and pulverizes the tea leaves.Because the raw material supply device is installed on the most upstream side opposite to this, it is necessary to cut Match only the size of tea leaves Will be capable of disconnection, those which do not require cutting is intended to be dropped accommodated through the mesh of the screen portion up to the said apparatus. Furthermore, the supply is smooth, and stones contained in the tea leaves, contaminants such as small metal pieces, can be automatically discharged and removed by rotation.

[0007]

EXAMPLES Next, an example of an embodiment relating to the crushing apparatus for tea leaves according to the present invention will be described in detail.

FIG. 1 is a schematic front view showing an apparatus for crushing tea leaves according to the present invention. 1 is a hopper into which tea leaves are put, 2 is a vibrating feeder disposed below the hopper 1, 3 is a chute into which tea leaves are fed by the vibrating feeder 2, and the hopper 1, the vibrating feeder 2, and the chute 3 The tea leaf supply device, which is a constituent material, is arranged so as to be located on the uppermost stream side opposite to the device for crushing tea leaves by the rotation action described later.

Reference numeral 8 is a cylindrical body formed by surrounding mesh bodies a, b and c on the outer circumference. The cylindrical body 8 used in the present invention has a skeleton as shown in FIG. a, b, c
The screen parts 5, 6 and 7 which are attached and rotatable are formed.

On the most downstream side of the cylindrical body 8, a screen portion 7 which is a hollow cylindrical body 8 provided with a mesh body c on the outer periphery and rotatably provided around a cylindrical axis, and the screen portion 7.
A rotary type crushing apparatus for tea leaves is provided, which is provided with a belt-shaped cutting blade 10 arranged on the inner circumference of the cylinder, and a cutting blade portion 10a that rotates concentrically with a screen portion.

An apparatus for crushing and processing tea leaves by this rotary type is provided on the most downstream side opposite to the tea-leaf supplying apparatus, and is composed of one or a plurality of rotatable cylindrical bodies 8 on the upstream side of such apparatus. The screen portions 5 and 6 are extended and continuously provided, and a fixed bottom 3a constituting the tea leaf supply device side is inserted at the most upstream end of the screen portion 5.

The tea leaves thus fed from the supply device are
Fine tea leaves are previously sieved by the nets a and b of the screen portions 5 and 6 in which the cylindrical body 8 is continuously extended to the outside by the centrifugal force caused by the rotational movement of the cylindrical body 8, and this sieving process is performed. By passing through one or more screen parts, only tea leaves of a certain size or more are guided to the pulverization processing device on the most downstream side, and at these parts, tea leaves of a certain size are uniformly cut uniformly. At the same time, the cut tea leaves are discharged to the outside by the centrifugal force due to the rotation through the net body c similarly formed on the outer periphery of the screen portion 7.

A closed bottom 8a is integrally formed on the end edge of the cylindrical body 8 in the pulverization apparatus located on the most downstream side,
Foreign matters such as stones and small metal pieces are provided outside the closed bottom 8a.
A residual foreign matter discharge hole 18 communicating with the outside is automatically formed so as to be automatically discharged to the outside according to the rotational movement.

In the preferred embodiment, the following steps and structure are adopted. First, the raw material such as tea leaves charged into the hopper 1 is stably charged into the chute 3 without being clogged by the vibrating feeder 2 and into the longitudinal hollow cylindrical body 8 rotatably installed by the central shaft 22. And slip off. On the outer periphery of the cylindrical body 8, a mesh body a commensurate with the particle size of a relatively small size in the raw material to be sieved,
Although b and c are attached to form the screen portions 5, 6, and 7, the net bodies a, b, and c are divided into three compartments, and by using different net bodies having different mesh sizes, It is possible to collect tea leaves having different particle diameters at once, and it is also possible to use a mesh body having a mesh size of the same diameter.

At both edges of the screen portion, a closed bottom 8a is provided on the downstream side and a fixed bottom 3a is provided on the upstream side, and the screen portion 5 is supported by a bearing roller 4 on the outermost circumference of the screen portion 5 on the most upstream side. Has been done. The screen portions 5, 6, 7 composed of the cylindrical body 8 are rotatably supported by the motor 12 and the cylindrical body driving sprocket 11 about the central axis 22 thereof, and the screen portions 5, 6,
7, a cutting blade portion 10a having a cutting blade 10 that rotates concentrically with the cutting blade driving motor 14, a cutting blade driving pulley 1
3. The cutting blade mounting shaft 9 is configured to rotate. In the drawing, reference numerals 15, 16 and 17 denote respective bearings, 19 denotes a cover for preventing crushed tea leaves from scattering, and 21.
Indicates an exhaust port for collecting dust.

The screen portion of the cylindrical body 8 is provided with a certain angle by the inclination angle adjusting device 20 formed on the most upstream side, and the raw material is sieved by the most upstream screen portion 5 by its rotational movement. Then, the raw material having a large size on the screen is further moved to the screen portion 7 on the most downstream side, and then is moved to the downstream screen portion 7 to be provided in this portion. The rotating cutting blade 10 surely crushes the tea leaves into a certain size and has no unevenness, and the tea leaves that have passed through the mesh c of the screen portion 7 fall downward and the crushing is completed satisfactorily. Becomes

Further, stones, small metal pieces, etc., which are difficult to cut, are pushed toward the residual foreign matter discharge hole 18 and stay there, and the discharge hole 1
When 8 is located below by rotation, it is discharged and foreign matters are stored in a receiving box or the like.

[0018]

According to the tea leaf crushing apparatus of the present invention,
Before introducing the tea leaves to the crushing device, small sized ones are sieved through the net in advance, and the remaining tea leaves of a certain size or larger are continuously guided to the crushing device, which can be precisely cut to the desired size. , Only the tea leaves required for cutting can be crushed. In addition, since impurities such as stones and small pieces of metal contained in tea leaves can be carried out and removed during crushing, the cutting blade can be used for a long period of time without eye spillage, and the tea leaf supply device can be separated from the crushing device. As a result, since the clogging phenomenon does not occur at the time of supply, the tea leaves can always be supplied smoothly.

[Brief description of the drawings]

FIG. 1 is a schematic front view of an apparatus.

FIG. 2 is a partially cutaway perspective view of a cylindrical body.

[Explanation of Codes] 1 Hopper 2 Vibration feeder 3 Chute 3a Fixed bottom 4 Bearing roller 5 Screen part 6 Screen part 7 Screen part 8 Cylindrical body 8a Closing bottom 9 Cutting blade mounting shaft 10 Cutting blade 10a Cutting blade part 11 For driving cylindrical body Sprocket 12 Motor 13 Cutting blade drive pulley 14 Cutting blade drive motor 15 Bearing 16 Bearing 17 Bearing 18 Residual foreign matter discharge hole 19 Cover 20 Tilt angle adjusting device 21 Dust collection air outlet 22 Center axis a Net b b Net c c Net body

Claims (2)

[Claims] 1. A screen part of a hollow cylindrical body provided with a net on the outer circumference and rotatably provided around a cylindrical axis,
In a tea leaf crushing apparatus comprising a cutting blade portion having a band-shaped cutting blade arranged on the inner periphery of the cylinder and a cutting blade portion concentrically rotating with the screen portion and a scattering prevention cover provided outside the screen portion,
On the upstream side of the device, a screen portion composed of a single or a plurality of rotatable cylinders is continuously provided, and at the same time fine tea leaves are sieved off by a mesh body of each continuously provided screen portion,
It is characterized in that only tea leaves of a certain size or more are guided to the pulverization processing device on the most downstream side and crushed, and a raw material supply device including a hopper, a vibration feeder and a chute is arranged on the most upstream side. Tea leaf crushing device. 2. The apparatus for crushing tea leaves according to claim 1, wherein a residual foreign matter discharge hole communicating with the outside is formed in the closed bottom of the downstream crushing apparatus.