JP4285956B2 - Tea leaf heat treatment equipment - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an apparatus for heat-treating tea leaves.
[0002]
[Prior art]
Conventionally, there are a batch type and a continuous type as a device for roasting tea leaves and heating them. The target tea leaves include fresh tea leaves, tea leaves that are being processed, and tea leaves that have been processed as tea. The continuous tea leaf heat treatment device is equipped with a tea leaf stirring hand in a semi-cylindrical processing cylinder. The tea leaf is put into one end of the processing cylinder and the other end of the processing cylinder is stirred while stirring the tea leaf by the stirring hand. Many tea leaves are heated during the transfer. In many batch-type tea leaf heat treatment apparatuses, tea leaves are accommodated in a cylindrical rotating drum and heat-treated while stirring the tea leaves by rotation.
[0003]
[Problems to be solved by the invention]
In the conventional continuous tea leaf heat treatment apparatus, heating unevenness is likely to occur due to the amount of tea leaf fed and the amount and moisture of the tea leaf, making it difficult to control the heat treatment. In addition, the batch-type tea leaf heat treatment apparatus has little heating unevenness, but has a problem that a complicated apparatus is required for charging and particularly taking out. It is an object of the present invention to provide a batch-type tea leaf heat treatment apparatus with little heating unevenness and easy tea leaf charging and unloading.
[0004]
[Means for Solving the Problems]
As a first means, one end is formed of a gas permeable member, the other end is opened, and a rotating shaft is horizontally mounted horizontally. The rotating shaft has an exhaust port, and slides on both ends of the cylindrical rotating drum. It is comprised from the disc installed so that it may contact | connect, and the heating means of the outer periphery of this cylindrical rotary drum.
[0005]
As a second means, the tea leaves are introduced from the exhaust port of the disk at the open end of the cylindrical rotating drum of the first means.
[0006]
As a third means, a fan is attached to the exhaust port of the first or second means.
[0007]
As a fourth means, a rotating shaft for horizontally rotating the open disc of the first, second or third means together with the disc support frame is provided at the connection portion between the disc support frame and the middle frame.
[0008]
As a fifth means, a high-pressure air blowing means is provided in the cylindrical rotary drum of the first, second, third or fourth means, and the high-pressure air is blown onto the tea leaves to be taken out.
[0009]
As a sixth means, there is provided a steam supply means for blowing steam into the cylindrical rotary drum of the first, second, third, fourth or fifth means.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a cylindrical rotary drum, one end of which is a breathable member 2 and the other end is an open end 3. A tea leaf diffusion claw 4 is appropriately attached inside the cylindrical rotary drum 1. A heating device 5 is installed below the cylindrical rotating drum 1, and the cylindrical rotating drum 1 is warmed 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 at the upper part of the heat insulation cover 20 to adjust the exhaust amount in the heat insulation cover 20.
[0013]
Reference numerals 7a and 7b denote discs installed so as to be in sliding contact with the cylindrical rotary drum 1, and the disc 7a on the open end 3 side of the cylindrical rotary drum 1 is 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 cylindrical rotary drum 1 heated by the heating device 5. 12 is a tilt actuator for tilting the entire apparatus installed on the inner frame 26 of the cylindrical rotary drum 1, the heating device 5 and the heat retaining cover 20 (in this embodiment, an air cylinder is used. And tilt with the tilt fulcrum 10 as a fulcrum.
[0014]
Reference numerals 8a and 8b denote exhaust ports provided on the disks 7a and 7b . Outlet 8a of the open end 3 side of the cylindrical rotating drum 1 also serves as the tea leaves inlet 32, turning on the tea leaves. A fan 15 and a duct 16 are connected to the exhaust port 8 b at the other end, and the air is blown into the cylindrical rotary drum 1. Reference numeral 17 denotes a high-pressure air nozzle which serves as a means for blowing high-pressure air into the cylindrical rotary drum 1. A hollow drive shaft 30 is connected to the cylindrical rotary drum 1 and rotates upon receiving power. A plurality of steam blow 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, and steam is supplied 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 fixing tool for fixing the disc support frame 19 that is rotatable about the inner frame 26 and the fulcrum 28 as a rotation axis. Reference numeral 33 denotes an inspection door provided on the disc 7a, and when opened, the inside of the cylindrical rotary drum 1 can be inspected.
[0016]
23 is a conveyor for the next process, and the tea leaves fall on 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 substantially sealed with a horizontally moving disc 7a, and is installed above the exhaust port 8a that also serves as a tea leaf inlet 32 provided in the disc 7a (illustrated). A predetermined amount of tea leaves is put into the cylindrical rotary drum 1 .
[0018]
The cylindrical rotating drum 1 is heated by the heating device 5, measures the temperature with the temperature sensor 11, and sets the desired temperature on the control panel (not shown), and then operates the heating device 5 to achieve the desired temperature. adjust. If the temperature is lower than the desired temperature, the heating device 5 is operated. If the temperature is higher, the heating device 5 is stopped. If necessary , the exhaust control damper 21 is opened to adjust the temperature. Further, the fan 15 can be activated to forcibly exhaust the air. The rotational speed of the cylindrical rotating drum 1 is set in advance, and the tea leaves are scooped up by the tea leaf diffusion claw 4 in the cylindrical rotating drum 1, and heat treatment is performed while diffusing. In the case of hard leaves with low water content and advanced maturity, it is preferable that steam is blown out from the steam blowout holes 34 to facilitate blue killing.
[0019]
When the heat treatment is finished, the horizontally moving disc 7a is set a predetermined distance from the open end 3 of the cylindrical rotating drum 1, and the tea leaves inside are removed by the rotation of the cylindrical rotating drum 1. At substantially the same time, the tilt actuator 12 operates, and the entire inner frame 26 that supports 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 ejected from the high-pressure air nozzle 17 to take out tea leaves having a small particle size, which are difficult to normally obtain.
[0020]
When cleaning the inside of the cylindrical rotating drum 1, the fixing tool 27 is released, and the entire disc support frame 19 of the horizontally moving disc 7 a is largely reversed with the fulcrum 28 as a rotation axis, and the cylindrical rotating drum 1 is reversed. The inside of the cylindrical rotary drum 1 is cleaned with the inside exposed.
[0021]
If fresh tea leaves are put into the apparatus of the present invention, the green is killed, and if the processing is further advanced, fried leaves can be made. In addition, when the tea leaves after drying are added, the fried leaves can be seasoned. In addition, hard leaves with low maturity and advanced maturity are not easily burned by contact heating alone, and are easy to scorch. The desired processed tea leaves are obtained without being voluminous.
[0022]
【The invention's effect】
A simple device, there is no effect of uneven heating is an advantage of the batch, an effect of increasing the thermal efficiency. Further, by providing an exhaust port and a fan , temperature adjustment is facilitated and control is facilitated.
[0023]
Charging can be done easily by putting tea leaves through the exhaust port on the open end side of the cylindrical rotating drum. When taking out, it can be easily taken out by horizontally moving the disc, and the cylindrical rotating drum can be tilted together with the frame to shorten the takeout time. Even tea leaves with a small particle size are surely taken out and there are no tea leaves left in the cylindrical rotating drum, so that they are not mixed into the next tea leaves.
[0024]
When cleaning the inside of the cylindrical rotating drum, if the entire frame supporting the horizontally moving disk is reversed, the inside of the cylindrical rotating 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 apparatus.
FIG. 2 is a side view of the apparatus.
FIG. 3 is a detailed plan view of the open end side of the apparatus.
FIG. 4 is a front view of the apparatus when tilted.
FIG. 5 is a plan view of the apparatus when the disk 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 Telescopic device 7a, 7b Disc 8a, 8b Exhaust port 10 Inclination fulcrum 11 Temperature sensor 12 Inclination actuator 13 Rotary drum drive motor 14 Rotating drum receiver Roller 15 Fan 16 Duct 17 High-pressure air nozzle 18 Telescopic actuator 19 Disk support frame 20 Thermal insulation cover 21 Exhaust control damper 22 Side cover 23 Conveyor 24 Drift plate 25 Outer frame 26 Middle frame 27 Fixing tool 28 Support point 29 Solenoid valve 30 Hollow drive shaft 32 Tea leaf inlet 33 Inspection door 34 Steam outlet 35 Seal 36 Steam supply pipe 37 Steam supply hose

Claims (6)

One end is formed of a breathable member, the other end is open, and the rotating shaft is installed horizontally so as to be in sliding contact with both ends of the cylindrical rotating drum having a horizontal rotating shaft and an exhaust port . A tea leaf heat treatment apparatus comprising a disc and heating means on the outer periphery of the cylindrical rotating drum.   2. The tea leaf heat treatment apparatus according to claim 1, wherein tea leaves are fed from an exhaust port of a disk at an open end of the cylindrical rotating drum. 3. A tea leaf heat treatment apparatus according to claim 1, wherein a fan is attached to the exhaust port. 4. The tea leaf heat treatment apparatus according to claim 1, wherein a rotating shaft for horizontally rotating the opened disc together with the disc support frame is provided at a connection portion between the disc support frame and the middle frame. 5. The tea leaf heat treatment apparatus according to claim 1, wherein a high pressure air blowing means is provided in the cylindrical rotary drum, and the high pressure air is blown onto the tea leaf to take out the tea leaf. 6. The tea leaf heat treatment apparatus according to claim 1, further comprising steam supply means for blowing steam into the cylindrical rotating drum.

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