JPS62244322A - Green tea leaf dispersing blade - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tea leaf dispersing blade in a raw tea leaf dropping conveyor.

(Conventional technology) Green tea is made by processing raw tea leaves picked from tea plantations into crude tea. Processing raw tea leaves into rough tea, that is, tea manufacturing, is a process that follows plucking raw tea leaves, but the two are completely different operations, and tea manufacturing is intensive work, so both operations are They do not proceed synchronously. For this reason, the tea manufacturing workshop is equipped with a storage room for raw tea leaves, and the raw tea leaves that are picked from the tea plantation are once accumulated in the storage room, and then supplied to the tea manufacturing process as raw materials for rough tea. . By the way, the freshness of raw tea leaves, which are the raw material for raw tea, is the most important.
Its freshness significantly affects the quality of the green tea product.

However, since raw tea leaves are, of course, fresh leaves, they generate a small amount of heat, so if you simply put them into a storage chamber and let them accumulate, this heat will gradually accumulate and create what is called steam. , the tea leaves wilt easily. Moreover, once the tea leaves wither, the quality of the green tea product decreases significantly, so that it cannot be used as a raw material for crude tea.

For this reason, conventional measures have been taken in the storage chamber to remove the heat generated from the raw tea leaves, suppress the generation of steam, and thereby maintain the freshness of the raw tea leaves.

An example of this is shown in FIG. 1, in which several ventilation grooves 3 are formed along the longitudinal direction on the floor 2 of the storage chamber 1, and a ventilation plate 4 is provided in the ventilation grooves 3. This is part of the floor surface. A blower 5 is connected to the ventilation groove 3, and fresh air sent into the ventilation groove 3 from here blows up into the storage chamber 1 through the ventilation panel 4. Furthermore, a rail (not shown) extending 11η lines is provided on the upper part of the ventilation panel 4, and a raw tea leaf dropping conveyor 6 is mounted on this rail so as to be able to move back and forth.

This raw tea leaf dropping conveyor 6 transfers the raw tea leaves onto the aeration plate 4 by half the length of the rail, and is a forward and reverse conveyor, which moves forward while moving at a pressure point or moves backward while reversing.
The raw tea leaves supplied above this are dropped onto the aeration plate 4, and the raw tea leaves are deposited on the aeration plate to a uniform thickness.
The air blown up from the ventilation plate 4 passes between the raw tea leaves A deposited thereon, removes the heat generated by the tea leaves, and suppresses stuffiness. By the way, in order to have the above-mentioned suppressing effect, it is necessary that at least enough voids exist between each tea leaf to allow air to pass through. However, in conventional storage chambers, when about 1 meter of raw tea leaves are accumulated, the air gaps between the tea leaves become extremely small, and the ventilation discs are no longer able to exert their effectiveness, resulting in stuffy air.

Therefore, the raw tea leaves A that have accumulated on the floor must be quickly plowed up using a fork and turned upside down, and from then on, the tea leaves A must be turned upside down at least every few hours. This work requires a lot of manpower and is hard labor, and in today's world where automation and labor saving are progressing in tea manufacturing, this work, which is not directly related to tea manufacturing, reduces green tea production efficiency and increases manufacturing costs. In addition, the delay in this work causes the raw tea leaves to feel stuffy, reducing the quality of the green tea product.

The inventor of the present invention discovered that the cause of the decrease in the porosity of the raw tea leaves A deposited on the floor as described above is that the raw tea leaves are directly dropped from the drop conveyor, and based on this, It has been discovered that by separating the raw tea leaves dropped from the container and allowing them to fall, it is possible to prevent a decrease in porosity and suppress the generation of steam. That is, storage chamber 1
In order to store raw tea leaves, raw tea leaves are dropped from the drop conveyor 6.

These raw tea leaves are dropped first and fall like a waterfall onto the raw tea leaves A deposited on the floor 2, so the energy of the fall acts as a compressive force on the raw tea leaves A. .

Needless to say, this compressive force is much larger than the weight of the tea leaves themselves, so the raw tea leaves A are eventually trapped by the gap. On the other hand, if the raw tea leaves falling from the dropping conveyor 6 are dispersed by the scattering blades,
Since the raw tea leaves are individually dispersed and fall, the energy of these falling particles causes the raw tea leaves A to be dispersed over a wide area, and as a result, no compressive force acts on the raw tea leaves A to reduce the gap. I don't. In the conventional method, the new tea leaves dropped from the dropping conveyor are deposited with few gaps due to the energy of their own falling, but when they are distributed and dropped, the falling tea leaves are stacked against the raw tea leaves A. Due to the extremely small impact force and the elasticity of the tea leaves, the tea leaves do not deform and reduce the gap, and are deposited with sufficient porosity.

(Means for Solving the Problems) The present invention has been made in view of the above points, and includes distributing blades at the dropping point of the raw tea leaf dropping conveyor, and the raw tea leaves dropped from the conveyor are first separated. The tea leaves are applied to a scattering blade, and the rotating force of the scattering blade causes the raw tea leaves to disperse and fall, thereby depositing them on the floor.

(Examples) Hereinafter, the present invention will be specifically described based on illustrated examples.

In FIG. 3, reference numeral 11 is a tea leaf dropping conveyor.

This conveyor is similar to the conventional dropping conveyor mentioned above, and is attached to a machine frame 12 so as to be able to rotate forward and backward. It is mounted on rails 13 so that it can run freely.

The conveyor shown in the figure is installed in the middle of two ventilation plates, and deflection chutes 14 are attached to both ends of the conveyor, and the raw tea leaves pass through the deflection chutes 14. It is designed to be dropped onto one of the ventilation panels. That is, the deflection chute 14 has a circular upper end and is rotatably supported by a ring-shaped support frame 15, and the direction in which the raw tea leaves are dropped from the chute 14 is changed so that it can be placed on either the left or right ventilation plate. It is designed to be dropped on

The tea leaf dispersing device of the present invention is attached to the raw tea leaf dispensing device constructed in this manner, and reference numeral 16 is a dispersing blade that constitutes the main part thereof. This one has rotation 11i
It is attached to the llI (horizontal axis) 17 and the deflection chute 1
It is installed at the position where the raw tea leaves dropped from No. 4 hit. In addition, FIG. 1 shows an example in which the distribution blade 16 is constituted by a drum 18 having a bulged central portion and two or more adjusting plates 19. This means that the possibility of damaging the raw tea leaves is smaller than when the splitting blades are simply composed of several blades, and the splitting effect of the raw tea leaves is high. That is, as shown in FIG. 4, the distribution blade 16 is formed by attaching several blade plates 20 to the rotating shaft 17, and the deflection chute
The trajectory of the raw tea leaves from step 4 is shown in a.

Assuming b, in order for the 1-minute spreading blade to exert a spreading effect on the raw tea leaves falling along the trajectory a, the circumferential speed A of the blade 20 must be sufficiently larger than the falling speed of the raw tea leaves. It must be done. However, if this is done, the blades 20 will directly hit the raw tea leaves falling along the trajectory b, resulting in damage to the raw tea leaves. On the other hand, as shown in FIG.
When the circumferential speed of the tram 18 is made slower than the falling speed of the raw tea leaves, the raw tea leaves that have fallen onto the splitting blades 16 are once placed on the drum 18 and are given rotational force by the rotation of the drum. Since the raw tea leaves are slightly delayed from the rotation of the drum, they are pushed out by the adjusting plate 19. Of course, in this case, the raw tea leaves are not directly struck by the tone plate 19 on their way down, but are first struck by the drum 1.
8 and is struck by the toning plate 19 with a rotational force applied in the same direction as the toning plate 19, so the impact force is extremely small and damage to the fresh tea leaves can be prevented. Since the number of attached blades can be reduced compared to the blade plates 20, the possibility of damaging the raw tea leaves is further reduced. In addition, it is desirable to cover the edges of the adjusting plate with synthetic rubber or the like to further prevent damage to the raw tea leaves (see Figure 5).

In addition, since the center of the drum 18 is formed to bulge out, raw tea leaves at point 0, for example, have a tendency to fall in the direction d, so they are slightly spread out and dispersed in the rotational direction e of the drum 18. It is. It is preferable that the distribution blade 16 adjusts its rotational speed and its installation position with respect to the deflection chute 14. FIG. 7 shows an example of such a configuration, in which reference numeral 21 is a drive motor, 22 is a variable speed pulley, 23 is a passive pulley, and 24 is a tension pulley. This is transmitted to the pulley 23, which in turn rotates the distributor blade lG6.
The upper part of the frame 25 is rotatably attached to the deflection shoes 1 to 14, and the deflector 'R1 is attached to the lower part of the frame 25.
The front and back positions of G are adjusted.

(Effects) J, A J - As described in detail, the present invention attaches a distribution blade to the tea leaf dropping conveyor provided at the upper part of the raw tea leaf storage chamber, and thereby once separates the raw tea leaves that are about to fall from the dropping conveyor. The tea leaves are received by the scattering blades, and then, due to their rotational force, the raw tea leaves are scattered and fall. Therefore, the raw tea leaves that are dropped are different from those that are dropped directly from a conventional drop conveyor or in a bay shape through a deflection chute, etc., and the compressive force is applied to the raw tea leaves that have been dropped first and accumulated in the storage chamber. Because the raw tea leaves are not exposed to moisture, there are enough voids in the raw tea leaves to prevent stuffiness. In particular, in the past, the dropped raw tea leaves are piled up in an enemy-like manner, which further strengthens the tendency for the porosity to decrease, but in the present invention, the porosity is increased evenly in this respect because the raw tea leaves are uniformly dispersed over a wide area. It will become. In addition, since the raw tea leaves are dispersed, the dropped raw tea leaves are evenly and sufficiently exposed to the air, which has the effect of cooling the stuffy air that occurs between the time they are picked and the time they are thrown. In this respect, deterioration in the quality of raw tea leaves is also prevented.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing a conventional storage chamber, FIG. 2 is a sectional view showing a part of the bottom of the storage chamber, and FIG. 3 is a side view schematically showing an embodiment of the present invention. FIG. 4 is a side view schematically showing a horizontal distribution blade, FIG. 5 is a vertical sectional view showing an embodiment of the horizontal distribution blade, FIG. 6 is a plan view of the same, and FIG. 7 is an embodiment. FIG. l ■; Tea leaf dropping conveyor 12; Machine frame 13; -
Le 14; Deflection chute 15; Support frame 16;
distributed wings

Claims (1)

[Scope of Claim] A raw tea leaf distribution blade attached to a tea leaf dropping conveyor mounted on a rail installed above a raw tea leaf storage chamber, the distribution blade comprising a horizontal drum with a bulged center portion. A raw tea leaf separating blade that has two or more blades attached to its outer peripheral surface, and is connected to a drive motor to rotate at an appropriate speed.