JPS6218223Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] Industrial application field This invention sets the interior of the rotating drum in a negative pressure state.
Inert gas is supplied to this to dehumidify and dry the tea while preventing oxidation, and the rotation of the drum allows multiple types of tea to be combined while drying, as well as storage after drying. This article relates to a tea manufacturing and drying machine that can be used for both cooperative and cooperative purposes.

Conventional technology Tea is generally dried by burning oil or gas.
Air is heated and drying is performed using this hot air. In this case, a furnace that heats the air directly or indirectly is required, which increases the size and equipment cost. It was also dangerous.

Additionally, those that use oil as fuel have the disadvantage that the oil contaminates the tea leaves, in particular, the oil can dissolve into the tea due to its high temperature and become indelible, and deterioration due to oxidation, which reduces the product value.

In addition, to mix tea for manufacturing, several kinds of tea are piled up in appropriate amounts and then scraped off with a hoe to mix them.
Combining is carried out by rotating a combining drum, but this requires finishing combining with a separate combining machine after drying, which is troublesome.

Therefore, in order to solve the above-mentioned drawbacks, the present invention sets the inside of the drum under load, supplies inert gas to it, dehumidifies the tea by circulating it while preventing oxidation, advances drying with hot air heated by a heater, and further During this drying process, the tea is combined, and the dried tea can be taken out or filled with inert gas for storage, preventing oxidation and allowing high-quality tea to be dried and combined during the process. The purpose is to streamline the work.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the tea manufacturing drum dryer of the present invention, which also serves as a combination, will be described in detail with reference to the accompanying drawings.

Reference numeral 1 denotes a rotating drum, and rails 2 and 3 are provided on the left and right sides of the outer periphery of the drum, and the drum is supported by two pairs of guide rollers 5, 5 and 6, 6 arranged on a machine frame 4. The rotating drum 1 is hermetically sealed with end plates 7 and 8, and one end plate 7 is provided with a chain foil 27, and the other end plate 8 is provided with a circulation duct A above and below.
It allows the air inside to circulate.

Circulation duct A includes suction duct 9 and discharge duct 10
The suction duct 9 is provided with an exhaust fan 12, and the end of the suction duct 9 is connected to the outside through a first damper 13 that opens and closes. A second damper 14 is provided at the border of the duct 11, and when the suction duct 9 is connected to the outside, the first damper 13 is opened and the second damper 14 is closed, and when the first damper 13 is closed, the second damper 14 is opened. so that it can be circulated.

In addition, the discharge duct 10 is connected to a porous ventilation duct 15 such as a wire mesh provided inside the drum 1, and a heater 16 is provided.Furthermore, a solenoid valve 19 connected to a dehumidifier 17 and an inert gas cylinder 18 is installed inside the connecting duct 11. An inert gas supply device B to which an interposed conduit 20 is connected is provided.

The drum 1 is provided with an inlet 21 at the top and an opening/closing lid 22 that covers this and opens/closes.The opening/closing lid 22 is sealed when the drum 1 is rotating and drying, and is opened when tea leaves are put in or taken out. It's like this.

Further, a belt conveyor 23 for taking out is installed horizontally at the bottom of the drum 1, and by rotating the drum 1, opening the lid 22 provided on the input port 21, and transferring the discharged tea onto the taking out belt conveyor 23. It is designed so that it can be taken out.

The drum 1 is driven by communicating with a motor 24 provided in the machine frame 4 via a chain 25.

26 is a regulator that connects to the heater 16 and controls the heater 1.
6 control is performed.

Next, the action will be explained.

Stop the drum 1 at the stop position, and open the upper input port 2.
The lid 22 of No. 1 is opened and tea leaves are introduced from a bucket conveyor or a belt conveyor. When this input is completed, the lid 22 is closed and sealed, the first damper of the circulation duct A is opened, the second damper 14 is further closed, and the exhaust fan 12 is operated to remove the air inside the drum 1.
At this time, the solenoid valve 19 is opened to supply inert gas, which mixes with the air inside the drum and is discharged outside the machine. After a certain period of time, the solenoid valve 19 closes and the air inside the drum 1 is discharged. When the air is discharged outside the machine and the pressure becomes negative than the atmosphere, the first damper 13 closes, and the second damper 14 is opened and the solenoid valve 19 is opened in the negative pressure state to supply inert gas into the residual air. Exhaust fan 1
2, the residual air is circulated through circulation duct A and dehumidified.
The hot air is heated and circulated through the air duct 15 into the drum 1 to move moisture from the dried material along with the air.The dehumidifier 17 discharges the moisture outside the machine, and the temperature is controlled at a constant temperature by the temperature regulator 26. When the time set by the timer elapses, the exhaust fan 12 stops and the drums 1 and 2 are heated and blown by the heater 16.
It rotates ~3 times, stirs and mixes the tea in the drum 1, then stops at the stop position, opens the solenoid valve 19, operates the exhaust fan 12, and repeats the above operation, repeating this several times After drying is completed. After the heater 16 is stopped and the temperature of the tea is lowered, the drum 1 is filled with only inert gas, and the first and second dampers 13 and 14 are closed to store the tea until it is taken out.

When taking out the tea, the lid of the inlet is opened while the drum 1 is rotated, and the tea is dropped onto a take-out belt conveyor 23 disposed below and taken out.

[Effect of idea]

As described above, the present invention uses a rotating drum 1 which is rotatably supported by guide rolls 5, 5 and 6, 6 on a machine frame 4, and which has an input port 21 and a lid 22 on its upper part, and is connected to a drive source such as a motor. and further contact the rotating drum 1.
A circulation duct A equipped with an exhaust fan 12, a dehumidifier 17, a heater 16, and an inert gas supply device is attached to one of the end plates of the end so that the circulation can be carried out, and the end of the suction duct 9 of the circulation duct A is is connected to the outside of the machine via a first damper 13, and a second damper 14 is provided at the boundary between the suction duct 9 and the communication duct 11.
This dryer is equipped with a dryer that also serves as a combination, and can dry and combine many types of tea at the same time while preventing oxidation, making it possible to rationalize the process and increasing the product value since there is no deterioration. Furthermore, after drying, it can be stored as is by filling it with inert gas, and moreover, it has the advantage of being able to take out only the required amount.

[Brief explanation of the drawing]

The drawing is a partially cutaway front view showing an embodiment of the dryer that also serves as a combination according to the present invention. 1... Rotating drum, 2, 3... Rail, 4...
Machine frame, 5, 6...guide roll, 7, 8...head plate,
9...Suction duct, 10...Discharge duct, 11...
...Connection duct, 12...Exhaust fan, 13...First damper, 14...Second damper, 15...Blower duct, 16...Heater, 17...Dehumidifier, 18
...Inert gas cylinder, 19...Solenoid valve, 20...
... Conduit, 21 ... Inlet, 22 ... Lid, 23 ...
Belt conveyor, 24...Motor, 25...Chain, 26...Adjuster, 27...Chain foil, 2
8... Filter, A... Circulation duct, B... Inert gas supply device.

Claims (1)

[Scope of utility model registration request] A rotating drum with an input port with a lid on the top and a mirror plate sealed on the left and right sides is rotatably supported by guide rolls placed on the machine frame, and the rotating drum is connected to a drive source. A circulation duct equipped with an exhaust fan, a dehumidifier, an inert gas supply device, and a heater is attached to one of the end plates of the duct, and the suction duct of the circulation duct is equipped with a first damper and a suction duct at the end. 2nd one at the border of the connecting duct
A tea manufacturing and drying machine equipped with a damper that also serves as a combination.