JP2004081168A - Tea leaf heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a batch-type tea leaf heater slightly causing uneven heating, where tea leaves are easily charged or taken out. <P>SOLUTION: The batch-type tea leaf heater has such a structure that one end of the heater is made of an air permeable member and the other end is formed to be open. The heater comprises a cylindrical rotary drum on which a rotation axis is almost horizontally installed, a circular plate installed so as to slide on the cylindrical rotary drum, and a heating means comprising the outer periphery of the cylindrical rotary drum. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
[Industrial applications]
The present invention relates to an apparatus for heat-treating tea leaves.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, apparatuses for roasting and heating a tea leaf include a batch type and a continuous type. The target tea leaves include fresh tea leaves, tea leaves during tea processing, and tea leaves after the completion of tea processing as crude tea. The continuous tea leaf heat treatment apparatus is provided with a tea leaf agitator in a semi-cylindrical processing cylinder, and puts tea leaves into one end of the processing cylinder, and agitates the tea leaves with the agitator, and the other end of the processing cylinder. In many cases, tea leaves are heated during the transfer. In addition, many batch-type tea leaf heat treatment apparatuses accommodate tea leaves in a cylindrical rotating drum and heat-treat the tea leaves while stirring the tea leaves by rotation.
[0003]
[Problems to be solved by the invention]
In the conventional continuous-type tea leaf heat treatment apparatus, heating unevenness is apt to occur due to the amount of tea leaves to be fed and the lump and moisture of the tea leaves, and it is difficult to control the heat treatment. In addition, the batch type tea leaf heat treatment apparatus has a problem in that although heating unevenness is small, a complicated apparatus is required for charging and especially for taking out. An object of the present invention is to provide a batch-type tea leaf heat treatment apparatus that has less heating unevenness and that can easily insert and extract tea leaves.
[0004]
[Means for Solving the Problems]
As a first means, a cylindrical rotating drum having one end formed of a gas-permeable member and the other end being open, and having a rotation axis extending substantially horizontally, and a disk installed so as to be in sliding contact with the cylindrical rotating drum. And heating means on the outer periphery of the cylindrical rotary drum.
[0005]
As a second means, an exhaust port provided with an opening / closing door is provided on the disk of the first means.
[0006]
As a third means, tea leaves are introduced from an exhaust port of a disk at the open end of the cylindrical rotary drum of the second means.
[0007]
As a fourth means, a scavenging fan is attached to the exhaust port of the third means.
[0008]
As a fifth means, there is provided an actuator for horizontally moving the disk at the open end of the cylindrical rotary drum of the second, third or fourth means.
[0009]
As a sixth means, an actuator for inclining the cylindrical rotary drum of the first, second, third, fourth or fifth means is provided.
[0010]
As a seventh means, a rotating shaft for horizontally rotating the opened disk of the first, second, third, fourth, fifth or sixth means together with the disk supporting frame is provided at a connection portion between the disk supporting frame and the middle frame. .
[0011]
As an eighth means, a high-pressure air blowing means is provided in the first, second, third, fourth, fifth, sixth or seventh means. As ninth means, a steam supply means for blowing steam into the cylindrical rotary drum of the first, second, third, fourth, fifth, sixth, seventh or eighth means is provided.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a cylindrical rotating body, one end of which is a permeable member 2 and the other end of which is an open end 3. A tea leaf diffusion claw 4 is appropriately mounted inside the cylindrical rotary drum 1. A heating device 5 using a gas burner is installed below the cylindrical rotary drum 1, and the cylindrical rotary drum 1 is heated by heat from the heating device 5. Reference numeral 20 denotes a heat insulating cover, which covers the cylindrical rotary drum 1. An exhaust adjustment damper 21 is provided on the upper part of the heat insulating cover 20 to adjust the amount of exhaust in the heat insulating cover 20.
[0013]
Reference numerals 7a and 7b denote disks provided so as to be in sliding contact with the cylindrical rotary drum 1. A disk 7a on the open end 3 side of the cylindrical rotary drum 1 is provided with a telescopic actuator 18 (in this embodiment, an air cylinder is used. However, it may be moved in the horizontal direction by a telescopic device 6 having a hydraulic cylinder, a motor or the like. Reference numeral 11 denotes a temperature sensor which measures the temperature of the outside of the cylindrical rotary drum 1 (the inside of the heat retaining cover 20) heated by the heating device 5. Reference numeral 12 denotes an inclination actuator (an air cylinder is used in the present embodiment, but a hydraulic cylinder, a motor, or the like, which inclines the entire device installed on the middle frame 26 such as the cylindrical rotary drum 1, the heating device 5, and the heat insulating cover 20. Good), and tilts with the tilt fulcrum 10 as a fulcrum.
[0014]
8a and 8b are exhaust ports, which are provided on the disks 7a and 7b. Opening and closing doors 9a and 9b are provided in the exhaust ports 8a and 8b, and the opening and closing doors 9a and 9b are connected to the opening and closing door actuator 31 (an air cylinder is used in this embodiment, but a hydraulic cylinder, a motor, or the like may be used). Can be opened and closed as appropriate. The exhaust port 8a on the open end 3 side of the cylindrical rotary drum 1 also serves as a tea leaf inlet 32, and opens the opening / closing door 9a to supply tea leaves. A scavenging fan 15 and a scavenging duct 16 are connected to the exhaust port 8b at the other end, and blow air into the cylindrical rotary drum 1. A high-pressure air nozzle 17 serves as a means for blowing high-pressure air into the cylindrical rotary drum 1. Reference numeral 30 denotes a hollow drive shaft, which is connected to the cylindrical rotary drum 1 and rotates by receiving power. A plurality of steam blowout holes 34 are provided near the tip of the hollow drive shaft 30, and steam is supplied through a steam hose 37, a steam supply pipe 36, and a seal 35 to supply steam into the cylindrical rotary drum 1.
[0015]
Reference numeral 27 provided on the open end 3 side of the cylindrical rotary drum 1 is a fixture for fixing the disk supporting frame 19 which is rotatable around the middle frame 26 and the fulcrum 28 as a rotation axis. Reference numeral 33 denotes an inspection door provided on the disk 7a. When the inspection door is opened, the inside of the cylindrical rotary drum 1 can be inspected.
[0016]
Reference numeral 23 denotes a conveyor for the next step, in which tea leaves fall onto the conveyor 23 by the side cover 22 and the sink plate 24.
[0017]
The operation of this embodiment will be described. First, the open end 3 of the cylindrical rotary drum 1 is made substantially closed by a horizontally moving disk 7a, and the opening and closing door 9a of the exhaust port 8a of the disk 7a which also serves as the tea leaf inlet 32 is opened and closed. Opened by 31, a predetermined amount of tea leaves is fed into the cylindrical rotary drum 1 from a conveyor (not shown) installed above. If the opening and closing door 9a is closed after the introduction, the inside of the cylindrical rotary drum 1 can be kept in a substantially sealed state. However, whether to close the opening and closing door 9a at the end of the introduction can be arbitrarily selected, and the cylindrical rotation It is also possible to continue exhausting the inside of the body 1.
[0018]
The cylindrical rotary drum 1 is subjected to a heating process by a heating device 5, and the temperature is measured by a temperature sensor 11, and when a desired temperature is set by a control panel (not shown), the operation of the heating device 5 is adjusted to a desired temperature. adjust. If the temperature is lower than the desired temperature, the heating device 5 is operated, and if the temperature is higher than the desired temperature, the heating device 5 is stopped. If necessary, the opening / closing doors 9a and 9b of the exhaust ports 8a and 8b and the exhaust adjusting damper 21 are opened to adjust the temperature. . Further, the scavenging fan 15 can be started to forcibly scavenge. The number of rotations of the cylindrical rotary drum 1 is set in advance, and the tea leaves are scraped up by the tea leaf diffusion claws 4 in the cylindrical rotary drum 1, and the heat treatment is performed while diffusing the tea leaves. In the case of a hard leaf having a low water content and an advanced ripeness, it is preferable that the steam is blown out from the steam blow-out hole 34 to facilitate blue killing.
[0019]
When the heating process is completed, the horizontally moving disk 7a extends from the open end 3 of the cylindrical rotary drum 1 to a predetermined distance, and the inside of the cylindrical rotary drum 1 is rotated to take out the tea leaves inside. At substantially the same time, the tilt actuator 12 operates, and the entire middle frame 26 supporting the cylindrical rotary drum 1 tilts toward the open end 3 with the tilt fulcrum 10 as an axis. If necessary, high-pressure air is jetted from the high-pressure air nozzle 17 to take out tea leaves having a small particle size, which are difficult to output normally.
[0020]
At the time of cleaning the inside of the cylindrical rotary drum 1, the fixing device 27 is released, and the whole of the disk supporting frame 19 of the disk 7 a which moves horizontally is used as a fulcrum 28 as a rotation axis to largely reverse the cylindrical rotary drum 1. The inside of the cylindrical rotary drum 1 is cleaned while the inside is exposed.
[0021]
Blue killing is performed when fresh tea leaves are put into the apparatus of the present invention, and roasted leaves can be formed by further processing. Also, when the tea leaves after drying are put in, the roasted leaves can be flavored. In addition, in the hard leaves having a low ripeness and having a low moisture content, it is difficult to perform sufficient blue killing by contact heating alone, and it is easy to scorch. However, by blowing steam into the cylindrical rotary drum 1 through the steam blowing holes 34, blue killing by steam is performed. The desired treated tea leaves can be obtained without being burned.
[0022]
【The invention's effect】
With a simple apparatus, there is an effect that there is no heating unevenness which is an advantage of a batch type, and there is an effect that heat efficiency is enhanced by keeping the inside of a cylindrical rotary drum in a substantially closed state. In addition, by providing an exhaust port so as to be freely openable and closable, or by providing a scavenging fan, temperature adjustment becomes easy and control becomes easy.
[0023]
By inserting tea leaves from the exhaust port on the open end side of the cylindrical rotating drum, the introduction can be easily performed. At the time of removal, the disk can be easily removed by moving it horizontally, and the take-out time can be shortened by tilting the cylindrical rotary drum with the frame.Furthermore, high pressure air is injected into the drum at the time of removal. In addition, even tea leaves having a small particle size are reliably taken out, and no tea leaves remain in the cylindrical rotary drum, so that they do not mix with the next tea leaves.
[0024]
When cleaning the inside of the cylindrical rotary drum, if the entire frame supporting the horizontally moving disk is inverted, the inside of the cylindrical rotary drum is exposed, so that the cleaning can be performed safely and easily.
[Brief description of the drawings]
FIG. 1 is a front view of the present apparatus.
FIG. 2 is a side view of the present apparatus.
FIG. 3 is a detailed plan view of the open end side of the apparatus.
FIG. 4 is a side view of the apparatus when inclined.
FIG. 5 is a plan view of the apparatus when a disc is opened.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylindrical rotary drum 2 Breathable member 3 Open end 4 Tea leaf diffusion claw 5 Heating device 6 Expansion device 7a, 7b Disk 8a, 8b Exhaust port 9a, 9b Opening door 10 Tilt support point 11 Temperature sensor 12 Tilt actuator 13 Rotary drum drive Motor 14 Rotary drum receiving roller 15 Scavenging fan 16 Scavenging duct 17 High-pressure air nozzle 18 Expansion / contraction actuator 19 Disk support frame 20 Heat retaining cover 21 Exhaust control damper 22 Side cover 23 Conveyor 24 Sink plate 25 Outer frame 26 Middle frame 27 Fixture 28 Support point 29 Solenoid valve 30 Hollow drive shaft 31 Open / close door actuator 32 Tea leaf inlet 33 Inspection door 34 Steam outlet 35 Seal 36 Steam supply pipe 37 Steam supply hose

Claims (9)

One end is formed of a permeable member, and the other end is open. A tea leaf heat treatment apparatus comprising a heating means on the outer periphery of a body. The tea leaf heat treatment apparatus according to claim 1, wherein the disc has an exhaust port provided with an opening / closing door. 3. The tea leaf heating apparatus according to claim 2, wherein tea leaves are introduced from an exhaust port of a disk at an open end of the cylindrical rotary drum. The tea leaf heat treatment apparatus according to claim 2 or 3, wherein a scavenging fan is attached to the exhaust port. 5. The tea leaf heating apparatus according to claim 1, further comprising an actuator for horizontally moving a disk at an open end of the cylindrical rotating drum. The tea leaf heat treatment apparatus according to claim 1, 2, 3, 4, or 5, further comprising an actuator for tilting the cylindrical rotating drum. The rotating shaft for horizontally rotating the opened disk together with the disk supporting frame is provided at a connecting portion between the disk supporting frame and the middle frame. Tea leaf heat treatment equipment. 8. The tea leaf heating apparatus according to claim 1, wherein high pressure air blowing means is provided in the cylindrical rotary drum. 9. The tea leaf heating apparatus according to claim 1, further comprising steam supply means for blowing steam into the cylindrical rotary drum.

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