JP2001299217A - Leaf beating method in tea processing and leaf beating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a leaf beating method and leaf beating machine for tea processing capable of performing uniform drying of tea leaves without causing the state of excessive water content on the surface of the tea leaf by the quick exudation from the inner part of the leaf. SOLUTION: The beating machine is provided with a leaf-beating drum 3, a rotary shaft 8a horizontally extending in the drum 3 along the longitudinal direction of the drum and leaf scrapers 10 attached to the rotary shaft 8a with regular intervals. Dry air is introduced into the drum 3 and the steamed leaves A charged into the drum are beaten and stirred with the scrapers 10 to remove the water from the leaves. The rotational speed of the leaf scraper 10 is set to 15-23 rpm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leaf making method and a tea making machine in a tea making process, and more particularly, to a rotation speed of leaf leaves for directly making tea leaves.

[0002]

BACKGROUND OF THE INVENTION The production process of green tea is roughly divided into a steaming process in which raw tea leaves are harvested and then steamed, a rubbing and drying process in which the steamed tea leaves are rubbed to remove water while rubbing, and the rubbed and dried tea leaves. (Rough leaves) and a finishing step for imparting flavor and the like. Of these, the kneading and drying process has traditionally consisted of a continuous combination of a rough kneading process, a kneading process, a middle kneading process, and a fine kneading process. In order to obtain it, it is becoming more common to provide a foliation step prior to the rough kneading step. This foliage process accepts steamed tea leaves and is exclusively dried (moisture removal)
The processing is performed in a state where the tea leaves are hardly rubbed. In addition, there exists a thing provided with a massager even if it is called a leaf driving machine.

[0003] By the way, when the steamed tea leaves are dried by a tea making machine, the moisture contained in the tea leaves immediately oozes out, and the surface of the tea leaves becomes in a so-called "gussy" state with a large amount of water. Become. In such a chewy state, the tea leaves tend to stick together and tend to be clumpy, resulting in uneven drying. Conventionally, in order to prevent such non-uniform drying, though not completely, a large volume of air was sent. The present applicant has obtained the knowledge that the surface of the tea leaves can be controlled to a so-called "chattered" state with a large amount of water by the rotation speed of the leaves, and by a unique study, the leaves of the leaves suitable for drying the leaves are developed. The number of revolutions was investigated.

[0004]

[Technical Problems Attempted to Be Developed] The present invention has been made based on the recognition and knowledge of such background, and the leaching inside the tea leaves is fast and the surface of the tea leaves does not become in a state of a large amount of moisture. The present invention has attempted to develop a new leaf making method and a tea making machine in a new tea making process capable of uniformly drying tea leaves.

[0005]

That is, according to the first aspect of the present invention, there is provided a method for forming leaves in a tea making process, comprising:
A leaf hitting cylinder having a side plate portion that is substantially tangentially continuous from the upper end edge of the lower trunk portion, a rotating shaft provided in the longitudinal direction in the leaf hitting cylinder, and a fixed distance from the rotating shaft. Using a device comprising a leaf spring attached to each, a dry air is introduced into the leaf punching cylinder, and the steamed tea leaves that have been introduced are beaten and agitated by the leaf spring to remove the water content of the tea leaves. In the removal, the rotation speed of the leaves is set to 15 rpm to 23 rpm. According to the present invention, since the diffusion of the internal moisture is slowed, the surface of the tea leaves does not fall into a state of a large amount of moisture.
Since water gradually seeps from the inside of the tea leaves to the surface, even strongly-steamed tea leaves such as deep-steamed leaves are less likely to be cut off during drying and do not become powdery. In addition, since the surface of the tea leaves does not become excessively moist, the tea leaves are less likely to clump together, and thus dry uniformly. Also, since the rotation speed is slow, the power is small,
In addition, even if the air volume is smaller than in the past, drying can be performed efficiently and economical.

According to a second aspect of the present invention, there is provided a leaf making machine having a semi-cylindrical lower body, and a side plate substantially tangentially continuous from an upper end edge of the lower body. It comprises a rotating shaft provided horizontally in the longitudinal direction in the punching cylinder, and leaves and leaves attached to the rotating shaft at regular intervals, while introducing dry air into the leaf punching cylinder, In a device for removing and agitating the leaves of steamed tea leaves by means of leaves and removing water from the tea leaves, the rotation speed of the leaves and leaves is set to be adjustable between 15 rpm and 23 rpm. It is characterized by having. According to the present invention, as described above, the diffusion of the internal moisture is slowed, so that the surface of the tea leaves does not fall into a state of excessive moisture. Since water gradually seeps from the inside of the tea leaves to the surface, even strongly-steamed tea leaves such as deep-steamed leaves are less likely to be cut off during drying and do not become powdery. In addition, since the surface of the tea leaves does not have a large amount of water, the tea leaves hardly clump together, and thus dry uniformly. In addition, since the rotation speed is low, the power is small, and even if the air volume is small as compared with the related art, drying can be performed efficiently and it is economical.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In the following description, first, the tea making machine according to the present invention will be described, and then its use mode will be described, and also the leaf making method in the tea making process will be described. In the drawing, reference numeral 1 denotes a batching type leaf driving machine as an example of the tea making machine of the present invention. The outline of the tea making machine 1 is as follows. A leaf punching cylinder 3 fixed to an appropriate machine frame 2 in a lying state, a hot air drum 6 provided at the back of the leaf punching cylinder 3, It comprises a take-out conveyor 7 provided below the cylinder 3, for example, using a vibrating conveyor or the like, and a stirring device 8 provided in the leaf hitting cylinder 3.

[0008] The leaf punching cylinder 3 will be described below. It comprises a semi-cylindrical lower trunk 4 whose upper part is open, and a side plate 5 which is continuous from the upper edge of the lower trunk 4 in the upper tangential direction. Become. The lower body 4 is formed by sticking a large number of rod-shaped bottom bamboos 4a on the inner surface thereof in the longitudinal direction so as to be in close contact with each other. On the lower surface, a take-out door 4b for taking out the processed tea leaves A is provided. Further, the side plate portion 5 is provided on the machine frame 2 with a metal panel-shaped side plate 5.
A of the front side plate 5A.
Is provided with a front management door 5a for maintaining and managing the inside of the leaf punching cylinder 3.

A stirrer 8 is provided in the above-described leaf hitting cylinder 3. The stirring device 8 is attached to the machine frame 2 so as to be freely rotatable, and the center of the upper end of the leaf hitting cylinder 3 is arranged. It comprises a rotating shaft 8a penetrating therethrough and leaves 10 attached to the rotating shaft 8a at regular intervals. As a feature of the present invention, the number of rotations of the leaves 10 is 15
It is set to be adjustable between rpm and 23 rpm.
Reference numeral M denotes a drive motor, and the rotation of the drive motor M is transmitted to the rotating shaft 8a via the speed reducer T. Reference numeral C denotes a control panel.

[0010] The rotation speed of the leaves 10 can be adjusted between 15 rpm and 23 rpm.
In addition to the drive mode of 23 to 23 rpm, the tea leaves can be driven in the drive mode of 31 to 40 rpm in which the rotation speed of the leaf blade 10 in the conventional drive mode can be adjusted between 31 to 40 rpm. The percussion machine 1 may be constituted. In this case, the weakly steamed tea leaves A are 31 rpm to 40 rpm.
Driving in drive mode, strong steamed tea leaves A is 15 rpm
２３23 rpm For example, a usage method of selectively using the motor in the drive mode is adopted.

Next, the leaves 10 will be described in detail. The leaf blade 10 includes an arm 11 connected to the rotating shaft 8a by a bolt or the like, and a hand 12 attached to a free end of the arm 11. The plurality of leaves 10 as described above are attached to the rotating shaft 8a at substantially 90 ° angular intervals in four directions.

The tea making machine according to the present invention has the above-described specific form. The following describes the leaf making method in the tea making process of the present invention together with this operation mode. When the tea leaves A after steaming are introduced from above the leaf punching cylinder 3, the tea leaves A are stirred up by the leaves 10 and scattered, and the tea leaves A are stirred. During this time, the tea leaves A are heated without interruption by the drying air generated by the hot air from the hot air drum 6, and the moisture is evaporated and dried.

[0013] A feature of the present invention is that the leaves 10
Is set at 15 rpm to 23 rpm and the tea leaves A
Leaching of the inside of the tea leaf A is slow, and the surface of the tea leaf A is not in a “gussy” state where the moisture is excessive. Therefore, the tea leaves A are not formed into a lump but are uniformly exposed to the drying air, and can be efficiently dried without setting the air volume excessively.

[0014]

According to the method and the machine for making tea in the tea making process of the present invention, the number of rotations of the leaves 10 is 15
The tea leaves A are dried at a setting of rpm to 23 rpm, and the diffusion of the internal moisture is slowed, so that when the leaves are hit, the surface of the tea leaves A does not fall into a state of a large amount of moisture. Then, since water gradually seeps from the inside of the tea leaf A to the surface, the strongly leafed tea leaf A such as deeply steamed is less liable to be cut when dried and does not become powdery. In addition, since the surface of the tea leaves A does not become excessively moist, the tea leaves A hardly clump together, and thus dry uniformly. In addition, since the rotation speed is low, the power is small, and even if the air volume is small as compared with the related art, drying can be performed efficiently and it is economical.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a tea making machine of the present invention.

FIG. 2 is a vertical sectional side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tea-making machine 2 Machine frame 3 Leaf drum 4 Lower trunk 4a Bottom bamboo 4b Take-out door 5 Side plate 5A Side plate 5a Front management door 6 Hot air blower 7 Take-out conveyor 8 Stirrer 8a Rotating shaft 10 Leaf grinder 11 Arm rod 12 Washer A Tea leaves C Control panel M Drive motor T Reduction gear

Continued on the front page F term (reference) 4B027 FB02 FC10 FP07 FP24 FR01 FR12

Claims (2)

[Claims] 1. A leaf punching cylinder having a semi-cylindrical lower body portion and a side plate portion substantially tangentially continuous from an upper end edge of the lower body portion, and a transversely extending longitudinal direction inside the leaf punching cylinder. Using a device comprising a rotating shaft provided in a state and leaves and leaves attached to the rotating shaft at regular intervals, dry air is introduced into the leaf punching cylinder, and the tea leaves after steaming that have been introduced are introduced. The leaves are sprinkled and agitated with leaves to remove water from the tea leaves, and the rotation speed of the leaves is set to 15 rpm.
~ 23 rpm, a method for foliage in the tea making process. 2. A leaf hitting cylinder having a semi-cylindrical lower body portion and a side plate portion that is substantially tangentially continuous from an upper end edge of the lower body portion, and is traversed longitudinally in the leaf hitting cylinder. A rotating shaft provided in a state, and leaf blades attached to the rotating shaft at regular intervals, while introducing dry air into the leaf punching cylinder, and removing the steamed tea leaves that have been put in. In the apparatus for removing and agitating leaves to remove water from tea leaves, the rotation speed of the leaves is 15 rpm to 23 rpm.
A tea making machine characterized by being adjustable between rpm.