JPS6311B2 - - Google Patents

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.

(Prior art) Green tea is made by processing raw tea leaves picked from tea gardens into rough 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 as a raw material for crude tea is most important, and the 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. ,
Tea leaves wilt easily. Moreover, once the tea leaves have withered, the quality of the green tea product decreases significantly, so that they can no longer be used as a raw material for crude tea.

For this reason, measures have traditionally been taken in the storage chamber to remove the heat generated by 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 further provided in the ventilation grooves 3. This is part of the floor surface. A blower 5 is connected to the ventilation groove 3, and the fresh air sent into the ventilation groove 3 from here blows up into the storage chamber 1 through the ventilation panel 4. Further, a rail (not shown) is provided above the ventilation panel 4 and parallel to the ventilation panel, 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 is approximately half the length of the rail, and is a forward and reverse conveyor, and is supplied onto the conveyor by moving forward while rotating in the forward direction or moving backward while rotating in the reverse direction. The raw tea leaves are dropped onto the aeration plate 4, and the raw tea leaves are deposited on the aeration plate to a substantially 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 raw tea leaves are piled up for about 1 meter, the air gaps between the tea leaves decrease significantly, and the aeration plate is no longer effective.
This creates steam.

Therefore, the raw tea leaves A that have accumulated on the floor should be immediately plowed up using a fork and turned upside down.
From then on, I was forced to turn my head 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 become 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 scattering raw tea leaves dropped from a container and allowing them to fall, it is possible to prevent a decrease in porosity and suppress the generation of steam. That is, when raw tea leaves are dropped from the dropping conveyor 6 in order to store them in the storage chamber 1, the raw tea leaves are dropped like a waterfall onto the raw tea leaves A that have been dropped earlier and are deposited on the floor 2. Since the tea leaves curl and fall, the energy of the fall acts on the raw tea leaves A as a compressive force. 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 dispersing blades, the raw tea leaves will be dispersed individually and fall, so the energy of the falling of these leaves will be transferred to the raw tea leaves A. The green tea leaves A are dispersed over a wide area, and as a result, no compressive force is applied to the fresh tea leaves A that would reduce the gaps. 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 raw tea leaves of the falling tea leaves are stacked. Because the impact force on A is extremely small and the tea leaves have elasticity, they do not deform and reduce the gap, and are deposited with sufficient porosity.

The present invention has been made in view of the above, and uses a distribution blade of a raw tea leaf conveyor 6, in which several receiving plates with blades attached to both edges are attached to a rotating shaft so that the opening/closing angle can be freely adjusted. A receiving plate is provided at the drop-off point, and the raw tea leaves dropped from the conveyor 6 are first received on a receiving plate, and then the leaves are dispersed by the blades, and the raw tea leaves are deposited on the floor surface with sufficient porosity. It is something that makes you

Here, a conventional tea leaf dispersing blade will be explained based on FIG. 3.

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 freely reversible, and the machine frame 12 is also mounted parallel to the above-mentioned ventilation panel or tea leaf management device. The vehicle is mounted on rails 13 constructed by the government, so that it can run freely.

A tea leaf dispersing device is attached to the raw tea leaf dropping device constructed in this manner, and reference numeral 16 is a dispersing blade that constitutes the main part thereof. The distribution blades 16 are attached to a rotating shaft (vertical shaft) 18, and are provided near both ends of the dropping conveyor 11 at positions where the raw tea leaves dropped from the conveyor come into contact. This device rotates in conjunction with a drive motor that rotates synchronously with the dropping conveyor 11, and the raw tea leaves dropped from the dropping conveyor 11 are distributed and dropped by its rotational force.

The above-mentioned distribution blade has several blades 30 attached to the rotating shaft 18, but in FIGS. 4 to 6, the blade is combined with a receiving plate 19 and two or more blades. 20 shows an example of the configuration. This means that the raw tea leaves dropped from the tea leaf dropping conveyor 11 are not directly applied to the rotating blades,
The raw tea leaves are first received on the receiving plate 19, and then are pushed in the direction of rotation by the blades 20 to apply rotational force. That is, if the dispersing blades were simply composed of the blades 30, the blades 30 would directly collide with the falling raw tea leaves, which would cause the raw tea leaves to be extremely easily damaged. shaped receiving plate 1
9 and the blade plate 20, the raw tea leaves are once placed on the receiving plate 19 and then pushed in the direction of rotation by the blade plate 20, so the impact force is much smaller, and the receiving plate 19 Even if the rotating speed of the plate is slightly slowed down, it is possible to reliably apply rotational force to the raw tea leaves, so the impact force on the raw tea leaves is even smaller, and therefore the possibility of damaging the raw tea leaves is reduced accordingly. As a result, high quality green tea can be obtained.

Here, the state in which the raw tea leaves dropped from the dropping conveyor 11 to the splitting blades 16 are removed will be explained. Now, in Figures 4 and 5, the distribution wing 1
6 is assumed to rotate clockwise, and the raw tea leaves dropped from the dropping conveyor 11 are assumed to reach the receiving plate 19 at points _a1 to _a4 . The raw tea leaves that have reached point a ₁ slide down along the slope of the receiving plate 19, eventually reach its lower edge b ₁ , and fall in direction c ₁ . On the other hand, when a ₂ slides down to point P, it is caught up by the blade 20 _-2 , and then slides down while being pushed by the blade, reaches the lower edge b ₂ and falls in the direction of c ₂ . Thereafter, the raw tea leaves dropped from the dropping conveyor 11 in the same manner are scattered in various directions between c ₀ and _{c 5} and fall.

(Summary of the Invention) The present invention provides a distribution blade by attaching several receiving plates with blades attached to both edges to a rotating shaft, and further adjusting the opening/closing angle of the distribution blade to adjust the inclination angle of the distribution blade. By adjusting the circumferential speed, damage to the raw tea leaves can be suppressed and the distribution range can be controlled.

(Example) The present invention will be specifically described below based on FIGS. 7 and 8.

In the figure, reference numeral 21 is a drive motor, 22 is a variable speed pulley, 23 is a passive pulley, and 24 is a tension pulley. Although the drive motor 21 is not shown, the machine frame 1
It rotates forward and reverse in synchronization with the reciprocating drive motor 2, and its rotation is transmitted to the rotating shaft 18 via the variable speed pulley 22 and the passive pulley 23, thereby rotating the distribution blade 16 at an appropriate speed. In the figure, an example is shown in which the receiving plate 19 is formed by being divided into several pieces, and the apex portion thereof is attached to the rotating shaft 18 so as to be openable and closable.

Of course, in this case, a gap will be created between adjacent receiving plates. Therefore, the tea leaves that fall into this area are not subjected to much centrifugal force by the dispersing blades, but
There is no change in the fact that the dispersion effect is applied to the point where the particles are separated from those that have fallen onto the receiving plate 19. In addition, if you want to apply centrifugal force to tea leaves that fall in this area, you can stretch a soft sheet over this area in advance, and the receiving plate itself can also be formed using a soft sheet material. However, there is nothing wrong with that. Although the mechanism for opening and closing this receiving plate 19 is not particularly limited, the figure shows a mechanism similar to that of an umbrella as an example. That is, the mounting pipe 34 is attached to the rotating shaft 18 so as to be able to rise and fall freely, and the mounting pipe 34 is attached to the rotating shaft 18 so as to be able to move up and down.
The connecting rods 25 are used to connect the connecting rods 25 to appropriate points. Incidentally, reference numeral 26 is an auxiliary receiving plate, which is attached to cover the mounting portion of the receiving plate 19 when there is a possibility that fresh tea leaves may become entangled with this portion. In addition, when it is necessary to change the rotation speed of the conveyor 11 or the amount of raw tea leaves dropped, or when the conveyor 11
There may be cases where it is necessary to adjust the mounting position of the distribution blade 16 relative to the distribution blade 16. In such a case, the receiving plate 19
One method is to make the attachment part of the teapot movable up and down in the same way as the attachment pipe 34, or to attach the frame body 27 so that it can be freely separated from the machine frame 12 to change the point at which the raw tea leaves reach the receiving plate 19. Yes (see Figure 8).

(Effects) As described in detail above, 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, the raw tea leaves that are about to fall from the dropping conveyor are temporarily separated by the distribution blade. After that, the rotation force causes the raw tea leaves to fall. Therefore, unlike conventional tea leaves that are dropped directly from a drop conveyor or in a cascading manner via a deflection chute, the raw tea leaves that are dropped are compressed against the raw tea leaves that have been dropped first and accumulated in the storage chamber. Since no force is applied, sufficient air gaps are created in the raw tea leaves to prevent stuffiness. In particular, conventionally, the dropped raw tea leaves are piled up in a ridge shape, which further strengthens the tendency for the voids to decrease, but in the present invention, by attaching wings to both edges of the receiving plate of the distribution blade, is uniformly dispersed over a wide area, resulting in a large porosity. In addition, as the raw tea leaves are dispersed by the blades, they are evenly and sufficiently exposed to the air, which has the effect of removing the stuffiness that occurs between picking them from the tea garden and before dropping them. In this respect as well, deterioration in the quality of raw tea leaves is prevented.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing a conventional storage chamber;
Figure 2 is a sectional view showing a part of the bottom of the storage chamber;
The figure is a side view schematically showing an embodiment of the present invention, FIG. 4 is a plan view showing an example of the movement of raw tea leaves in an umbrella-shaped spreading blade, FIG. 5 is a side view of the same, and FIG. FIG. 7 is a perspective view showing an example of the embodiment, and FIG. 8 is a partially cutaway side view of the same. 11; Tea leaf dropping conveyor, 12; Machine frame, 13;
Rail, 16; Distribution blade, 18; Rotating shaft, 19; Receiving plate, 20; Wing plate, 21; Drive motor, 22; Speed pulley, 23; Passive pulley, 24; Tension pulley, 25; Connection rod, 26 ; Auxiliary receiving plate, 27; Frame body, 34; Mounting pipe.

Claims (1)

[Claims] 1. A tea leaf distributing blade attached to a tea leaf dropping conveyor mounted on a rail installed above the raw tea leaf storage chamber so as to be freely movable, and the distributing blade consists of several receiving plates with blades attached to both edges. tea leaves in a raw tea leaf dropping conveyor, characterized in that the tea leaves are attached to a rotary shaft so that the opening/closing angle can be adjusted freely, and the tea leaves are connected to a drive motor, and rotate forward and backward in synchronization with the reciprocating motion of the tea leaf dropping conveyor. Spread wings.