JP2808006B2 - A tea leaf steamer with an insertion port in the ventilation cylinder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a tea-leaf evaporator in which an insertion port is formed in a ventilation cylinder. More specifically, the opening / closing lid of the insertion port is attached to the upper lid of the operation port, and the upper lid of the operation port is opened / closed so that the opening / closing lid of the ventilation cylinder opens and closes in a pair.

(Prior Art) Fresh tea leaves picked from a tea plant are steamed and heat-treated in a tea plant at a tea leaf evaporator, and then subjected to rough kneading, kneading, medium kneading, fine kneading and the like to be processed into crude tea.

The tea leaf steamer is a kind of rotary drum type continuous processing machine, the main body part of which is composed of a fixed drum portion and a rotary drum portion, through which a stirring shaft is mounted. The fixed body has a two-layer structure of an outer body and a ventilation body, and a steam chamber is formed between the two. The upper half of the ventilation cylinder is formed using a permeable plate material such as punching metal, and fresh tea leaves are supplied quantitatively directly from the tea leaf inlet into the ventilation cylinder, while steam is supplied from the steam inlet to the steam chamber. After being blown, it passes through the upper half of the ventilation cylinder and enters the trunk.

A feed blade is attached to this portion of the stirring shaft so that the supplied raw tea leaves are fed into the rotating body together with the steam.

By the way, as shown in the figure, the stirring shaft is provided slightly below the center of the ventilation cylinder, and there is a gap between the upper half of the ventilation cylinder and the rotation orbit of the feed blade. During the steaming treatment, the fresh tea leaves adhere to the inner surface of the upper half part of the ventilation cylinder because the fresh tea leaves to be fed into the container contain a considerable amount of water. Then, the ventilation hole of the ventilation cylinder is closed by the raw tea leaves, and the apparent vapor transmission area is reduced. As a result, the ability to supply steam to the inside of the body is reduced, so that the steaming function of the tea leaf steamer is impaired, which is a factor of lowering the quality of the green tea product.

Therefore, when the amount of fresh tea leaves attached to the inner surface of the ventilation cylinder reaches a certain amount, it is necessary to remove it.

In addition, the properties of fresh tea leaves vary significantly depending on the time of harvest and the degree of growth at the time of harvest. Therefore, when steaming the raw tea leaves, not only the processing conditions such as the supply amount of the raw tea leaves to the tea leaf steamer or the amount of steam blown into the tea leaf evaporator, but also a suitable stirring shaft are selected.

Therefore, it is necessary to replace the stirring shaft depending on the properties of the raw tea leaves to be steamed.

(Problems of the prior art) However, as described above, the tea leaf steamer has a structure in which the fixed trunk portion has two layers of the outer trunk and the ventilation cylinder, and the arm can be inserted into the ventilation cylinder. It is difficult to remove fresh tea leaves adhering to the inner surface of the ventilation cylinder because it is not possible, and the stirring shaft is about 2000 to 2500 nm long and heavy, so it can be attached without bringing the feed blade into contact with the ventilation cylinder. It was also difficult to remove. Therefore, conventionally, since these operations were not sufficiently performed, the steam heat treatment was not necessarily performed under appropriate conditions.

(Purpose) It is an object of the present invention to provide means for facilitating the cleaning operation of a ventilation cylinder and for easily attaching and detaching a stirring shaft without damaging the ventilation cylinder.

(Summary of the Invention) The tea-leaf evaporator according to the present invention has an insertion port formed in the ventilation cylinder, from which an arm is inserted into the ventilation cylinder to easily remove fresh tea leaves attached to the inner surface of the cylinder and to attach and detach the stirring shaft. In particular, by opening the position overlapping the above-mentioned insertion port of the outer shell to form an operation port, the arm can be inserted into the ventilation cylinder through the operation port and the insertion port. At the same time, the opening / closing lid of the insertion port is attached to the upper lid of the operation port, and the opening / closing lid of the insertion port is opened / closed integrally by opening / closing the upper lid of the operation port. Thus, it is possible to form an insertion port in the ventilation cylinder.

(Operation) The tea leaf steamer according to the present invention has an opening / closing lid for the insertion port of the ventilation cylinder attached to the upper lid of the operating port of the outer shell, so that when the upper lid of the operating port is opened / closed, the opening / closing lid of the operating port is integrally opened / closed. I do.

(Example) Hereinafter, a tea leaf steamer according to the present invention will be specifically described based on an illustrated example.

FIG. 1 is a longitudinal sectional view of a main part of a tea leaf steamer, wherein reference numeral 1 denotes a fixed body, 2 denotes a rotating body, and 3 denotes a stirring shaft.

The fixed body 1 is a part for supplying raw tea leaves and steam to the inside of the machine, and is composed of an outer shell 11 and a ventilation cylinder 12, further formed with an inlet 13 for raw tea leaves, and a steam supply pipe 14. Installed.

The ventilation cylinder 12 constitutes the inner surface of the fixed trunk 1, and its upper half is formed using a ventilation plate having a large number of ventilation holes such as punched metal. The ventilation cylinder 12 is slightly thinner than the outer cylinder 11, and a gap is formed between the outer cylinder 11 and the gap, which forms a steam chamber 15.

The inlet 13 reaches the outer shell 11 so that raw tea leaves can be directly supplied to the outer shell 11 in a fixed amount, while the steam supply pipe 14 is open to the steam chamber 15 so that the steam is Once the steam room
After being supplied to 15, it can be blown in from the upper half of the ventilation cylinder 12.

A few to a dozen or more feed blades 31 are attached to the stirring shaft 3 so that the raw tea leaves and steam supplied to the ventilation cylinder 12 are fed to the rotary body 2.

The rotating body 2 is composed of a rotating mesh cylinder 21 connected to the ventilation cylinder 12 and a covering cylinder 22 covering the mesh cylinder 21, while a large number of stirring blades 32 are attached to this portion of the stirring shaft 3. By rotating the rotating net cylinder 21 and the stirring shaft 3 at appropriate speeds, the tea leaves are agitated in the net cylinder 21 and are made to come into sufficient contact with steam while being softened by foliage, thereby steaming. ing.

An insertion port 16 is formed in the ventilation cylinder 12 of the tea leaf steamer configured as described above, and an operation port 17 is formed at a position overlapping the insertion port 16 of the outer shell 11, and the operation port 17 is inserted. An arm can be inserted into the ventilation cylinder 12 through the mouth 16 to remove fresh tea leaves and to easily attach and detach the stirring shaft.

The opening / closing lid 18 of the insertion opening 16 is formed separately from the ventilation cylinder 12 and is attached to the upper lid 19 of the outer trunk 11.
When it is opened and closed, it opens and closes integrally with this. In particular, the lid 18
Is slightly smaller than the operation port 17 so that it can pass through the operation port 17, and the distance between this and the upper lid 19 is almost the same as the distance between the outer shell 11 and the ventilation cylinder 12. When the upper lid 19 is closed, the opening / closing lid 18 is necessarily closed. Therefore, no opening / closing mechanism is formed between the insertion opening 16 and the opening / closing lid 18, and the upper lid 19 and its opening / closing mechanism (for example, a hinge or a hook) also serve as an opening / closing mechanism for the opening / closing lid 18. .

(Effects) As described above, in the tea leaf steamer according to the present invention, the insertion port is formed in the ventilation cylinder, and the arm can be inserted into the ventilation cylinder from here, so that the raw tea leaves adhered to the inner surface of the ventilation cylinder. Can be easily removed, and the stirring shaft can be easily attached and detached. As a result, it is possible to always perform the steam heat treatment in a good condition, and to obtain a high quality product green tea.

Also, the opening / closing lid of the insertion port is formed separately from the ventilation cylinder and attached to the upper lid of the outer trunk, and the opening / closing lid is slightly smaller than the operation port so that it can pass through the operation port. At the same time, the distance between the upper lid and the upper lid was made substantially the same as the distance between the outer shell and the ventilation cylinder, so that the lid was inevitably closed when the upper lid was closed.

As a result, there is no need to provide a mechanism for attaching the opening / closing lid to the insertion opening, a mechanism for opening / closing the opening / closing lid, and the like, so that the ventilation cylinder is formed using a ventilation plate such as punching metal. The insertion port can be formed simply by cutting off that portion of the ventilation cylinder without requiring reinforcement of the periphery of the insertion hole.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a tea leaf steamer according to the present invention, and FIG. 2 is a sectional view taken along the line AA showing a state in which an upper cover is opened. 1: Fixed body, 2: Rotating body 3: Stirring shaft 11: Outer body, 12: Ventilation body 13: Raw tea leaf input port, 14: Steam supply pipe 15: Steam chamber, 16: Insertion port 17: Operation port, 18: Open / close lid 19: Top lid

Claims (1)

(57) [Claims] An insertion opening is formed in a ventilation cylinder of a fixed body portion including an outer cylinder and a ventilation cylinder, an operation port is formed at a position overlapping with the insertion port of the outer cylinder, and an opening / closing lid of the ventilation cylinder is ventilated. A tea leaf steamer characterized in that it is formed separately from the body, is attached to the upper lid of the operation port, and opens and closes the upper lid of the operation port to integrally open and close the lid of the insertion port.