JP2022129085A - Dew removing device for tea leaf - Google Patents

Abstract

To provide a dew-removing device capable of removing uniformly and surely dew adhering to tea leaves.SOLUTION: A dew-removing device for tea leaves includes a tube body 3 provided on a movable body A moving along a ridge (a) of a tea plant. The tube body 3 includes: a connection duct 4 connected to a blower; and square cylindrical flow ducts 5, 6 formed continuously to a downstream side of the connection duct 4. The flow ducts 5, 6 are formed so as to blow out air obliquely downward to crowns 9 of a tea plant in rightward or leftward directions of the ridge (a) of the tea plant.SELECTED DRAWING: Figure 3

Description

The present invention relates to a dew remover for removing raindrops and night dew from tea leaves to be plucked.

In general, when tea leaves are steamed while raindrops and night dew are attached, steaming does not reach the core of the tea leaves. Therefore, it is necessary to remove the dew by hot air drying or centrifugal separation before steaming after plucking, but such processing not only easily damages the tea leaves but also reduces freshness for the time required for removal. For this reason, a dew removing device has been proposed and implemented in which air is blown out from the front of a tea leaf plucking machine that moves along the ridges of tea plants to remove the dew before plucking.

The dew removing devices of Patent Documents 1 and 2 have a structure in which a large number of pipe-shaped outlets are arranged in a line in a long base pipe leading to a blower, and air is blown out from the outlets to remove dew. The device of Patent Document 3 is a thin box-shaped hollow mat with a large number of air outlets (circular holes) formed on the bottom surface. Air is sent into the inside of the mat while it is placed on a surface and dragged, and the dew is removed by the wind blown out from the exhaust port. The technique of Patent Literature 4 blows air forward from a plurality of air ducts arranged in a row in a plucking machine to remove dew.

JP-A-55-58018 JP-A-56-05005 Japanese Utility Model Laid-Open No. 56-142558 JP 2010-148519 A

However, the techniques of Patent Documents 1 to 4 all have a structure in which air is blown out from a plurality of circular holes, and the strong blown air hits the tea leaves in a spot shape, so the wind pressure on the tea leaves tends to be uneven, and the dew removal is also possible. There is a drawback that it tends to be non-uniform.

In addition, in order to remove the dew on the tea leaves in the lower layer of the tree crown, it is necessary to shake the branches and tea leaves to shake off the dew. Since it has a structure that shakes the branches, it can only shake off the dew that belongs to the upper layer of the crown. Even in the technique of Patent Document 3, since the lower surface of the hollow mat is placed on the upper surface of the tree crown, the tea leaves block the air outlet, weakening the wind pressure, and the branches and tea leaves cannot be sufficiently shaken. In addition, the technique of Patent Document 4 has a structure in which air is blown in front of the plucking machine, and the dew is blown off and adheres to the tea leaves in front just before they are harvested, which is inefficient.
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a dew removing device capable of uniformly and reliably removing dew from tea leaves.

In order to solve the above problems, the invention according to claim 1 comprises a tubular body provided in a moving body that moves along the ridges of tea plants, the tubular body comprising a connecting duct connected to a blower and a connecting duct. a square tube-shaped fan duct continuously formed downstream of the tea plant, wherein the fan duct is formed to blow air obliquely downward to the canopy of the tea plant in either the left or right direction of the ridge of the tea plant. It is characterized by

Claim 2 is characterized in that, in Claim 1, an airflow direction adjusting piece is formed at the opening edge of the air duct for guiding downward the upper airflow of the air blown out from the air duct.

The invention according to claim 3 is characterized in that, in claim 1 or 2, a guide plate is formed at the opening edge of the air duct for guiding downward the airflow in the lower part of the air blown out from the air duct.

Claim 4 is the pipe according to any one of Claims 1 to 3, wherein a plurality of the air ducts are branched from the single connecting duct, and the plurality of air ducts are formed by ridges of tea trees. It is characterized in that it is formed so as to obliquely blow out air in the same direction when viewed in the left-right direction.

The invention according to claim 5 is characterized in that, in claim 4, a damper for adjusting the amount of air supplied to the plurality of air ducts is arranged inside the tubular body.

According to claim 6, in any one of claims 1 to 5, at least two of the tubular bodies having the same shape are provided, and the two tubular bodies are horizontally reversed and arranged side by side in the front-rear direction. do.

Claim 7 is characterized in that, in Claim 6, the front surface of the front tubular body and the rear surface of the rearmost tubular body are covered with covers to form an integral space inside the front and rear covers. .

According to the first aspect of the invention, since the air duct is rectangular, the blown air hits the tea leaves in a planar manner and is evenly blown, so that the dew on the upper layer of the tree canopy can be reliably removed. can be done. In addition, the dew is blown off in the lateral direction of the ridges of the tea plants together with the blown air, and does not adhere to other tea leaves again, so the dew removal efficiency is good. In addition, diagonal air tends to be blown downward through gaps in the upper layers of the tree canopy, so the branches and tea leaves are finely shaken by the wind pressure, and the dew on the lower layers that cannot be blown off directly can be shaken off. In this way, it is possible to effectively and reliably brush off the dewdrops from all the tea leaves in the part to be picked.

According to the second aspect of the invention, of the air blown obliquely from the blower duct, the upper airflow is changed into a downward flow by the airflow direction adjusting piece, so that the blown air is maximized for removing dew. can be used.

According to the third aspect of the invention, the lower airflow out of the air blown obliquely from the fan duct is changed into a downward flow by the guide plate, so that the lower airflow blows against the tea leaves at a steeper angle. Therefore, it is possible to obtain a wide spraying area as a whole.
According to the fourth aspect of the present invention, since a plurality of air ducts are branched from the connecting duct, it is possible to expand the area for removing tea leaves.

According to the fifth aspect of the invention, since the damper for adjusting the amount of air supply is arranged inside the tubular body, an appropriate amount of air can be adjusted according to the length and shape of the branched fan duct. can send out.
According to the sixth aspect of the invention, the right side and the left side of the ridge can be shared by a plurality of tubular bodies to remove dew, and the dew removal work for one ridge can be completed in a short time.

According to the seventh aspect of the invention, since a large integrated space is formed inside the front and rear covers, the air blown out from the blower duct does not escape back and forth, and is all effectively used for removing dew. A part of the air blown in opposite directions to the right and left in the space becomes a swirling flow, shaking the tea plants in multiple directions, so that even more effective dew removal can be realized.

1 is a front view showing an outline of a tea leaf plucking machine equipped with a dewdrop device according to the present invention; FIG. It is a perspective view of a tubular body. It is a longitudinal cross-sectional view of a dew remover. It is an explanatory view of a mounting mode of a pair of dew removing devices. It is a front view of the state which attached the cover material.

In FIGS. 1 to 3, symbol A indicates a tea leaf plucking machine (moving body), and symbol B indicates a dew remover. Although not shown in detail, the tea leaf plucking machine A includes a cutting blade that cuts tea leaves in the crown 9 of the ridge a, a blower that blows the cut leaves into a container by wind pressure, a storage bag that stores the cut leaves, and a tea tree. It is provided with a caterpillar 2 for moving the tea leaf plucking machine A along the ridge a, a driving device for these, a driver's seat for operating the driving device, etc., and may be a known one. Reference numeral 1 is a part (frame body) of the frame of the plucking machine, and 2 is a caterpillar. When plucking tea leaves with this tea leaf plucking machine A, the tea leaf plucking machine A moves along the ridge a of the tea plant so that the plucking is performed inside the tea leaf plucking machine A covering the ridge a of the tea plant. It's becoming In the following description, the forward direction of the tea leaf plucking machine A is "forward", the rearward direction of the tea leaf plucking machine A is "rear", and the left and right direction when the tea leaf plucking machine A is facing forward. This will be described as "left and right direction".

This tea leaf plucking machine A has a tubular body 3 as shown in FIG. The tubular body 3 is fixed to the frame 1 in front of the cutting blade and connected to a blower (not shown). The blower may be a blowing device already provided in the plucking machine, or a blower separate from this blowing device may be used. This tubular body 3 is fixed to a support member 17 provided on the frame 1 . The support member 17 is attached to the frame 1 via an adjusting device (not shown) that adjusts the height position of the tube 3 .

The tubular body 3 described above includes a connection duct 4 connected to a blower, and square tube-shaped fan ducts 5 and 6 continuously formed downstream of the connection duct 4 . In this embodiment, two fan ducts 5 and 6 are branched from one connecting duct 4 .

The connecting duct 4 is rectangular and arranged vertically. The connecting duct 4 supplies air to the branched air ducts 5 and 6, and is provided with a damper 7 for adjusting the amount of air supplied according to the length and shape of each air duct 5 and 6. there is The damper 7 is a plate-like member that partitions the airflow path, and is arranged to distribute the air to the airflow ducts 5 and 6, respectively.

Both of the two air ducts 5 and 6 are formed in a square tubular shape. These two air ducts 5 and 6 are branched left and right, and as shown in FIG. is formed as For example, two air ducts 5 and 6 are formed to blow air diagonally downward to the right (or two air ducts 5 and 6 are formed to blow air diagonally downward to the left). is being used). Of these two air ducts 5 and 6, one (air duct 5) is a straight pipe and the other (air duct 6) is a curved pipe. In this embodiment, more air is supplied to the bent-pipe fan duct 6 than to the straight-pipe fan duct 5 by the above-described damper 7 .

As shown in FIG. 3, the air blown out from the two air ducts 5 and 6 is set so as to be blown in the lateral direction of the ridge a of the tea tree and obliquely to the crown 9 of the tree. At the opening edge (upper part of the mouth) of each of the fan ducts 5 and 6, a wind direction adjusting piece 10 is formed to guide downward the upper airflow q of the air blown from the fan ducts 5 and 6. As shown in FIG. The wind direction adjusting piece 10 may be configured so that the angle and the degree of protrusion thereof can be variably adjusted.

In this embodiment, notches 11 and 12 are formed in the lower portions near the mouths of the fan ducts 5 and 6, respectively. are provided with guide plates 13 and 14 that turn a part of them downward. In other words, guide plates 13 and 14 are formed at the opening edges of the fan ducts 5 and 6 to guide downward the lower airflow p of the air blown from the fan ducts 5 and 6 .
In this manner, the wind direction adjusting piece 10 and the guide plates 13 and 14 are arranged substantially parallel to each other, and are configured to guide the air obliquely downward.

According to the above-mentioned dew removal device B, since the air ducts 5 and 6 are rectangular cylinders, the blown air hits the tea leaves in a plane and is uniformly blown, so the effective area for blowing is a circular pipe or a circular hole. , and the dew on the upper part 9a of the canopy 9 can be reliably wiped off. In addition, the dew is blown off in the horizontal direction of the ridge a of the tea plant together with the blown air, and does not adhere to other tea leaves again, so the dew removal efficiency is good. Furthermore, the dew on the tea leaves on the upper surface of the crown 9 is directly blown off by the wind pressure of the air blown obliquely against the tea tree. In addition, oblique air is likely to be blown downward through gaps between tea leaves in the upper layer portion 9a of the crown 9. As shown in FIG. In other words, if the air is blown horizontally, the air only traces the top surface of the tea leaves, and if the air is blown vertically, the air pushes the tea leaves downward and expands them, so that the lower layer portion 9b is expanded. It becomes dense with the tea leaves and closes the gaps between the tea leaves. In this regard, if the air is blown out in an oblique direction as in this embodiment, the air is easily blown into the interior through the gaps between the tea leaves. It is also possible to shake off the dew on the lower layer portion 9b which is not covered. In this way, it is possible to effectively and reliably brush off the dewdrops from all the tea leaves in the part to be picked. Among the air obliquely blown out from the mouths of the blower ducts 5 and 6, the lower airflow p is blown against the tea leaves at a steep angle. On the other hand, if the wind direction adjusting piece 10 were not provided, the upper air current q would be blown out at a loose angle against the tea leaves, and the wind pressure on the tea leaves would be weakened. , the blown air can be optimized for dew removal.

It should be noted that the air sent from the fan ducts 5 and 6 is caused by the bottom notches 11 and 12 of the fan ducts 5 and 6 to flow through the notches 11 and 12 and the guide plates 13 and 14 as shown in the airflow p. Since it is blown down at a steep angle in front of it, it is possible to obtain a wide spraying area as a whole. The guide plate 13 (the guide plate 13 arranged downstream in the air blowing direction when viewed in the left-right direction of the ridge a of the tea tree) is placed on the guide plate 14 (upstream in the air blowing direction when viewed in the left-right direction of the tea tree ridge a). By making it longer than the guide plate 14) arranged on the side, the upper airflow r of the air blown from the upstream air duct 6 is turned downward and can be effectively used for removing dew on the downstream side.

Further, in this embodiment, at least two tubular bodies 3 having the same shape as described above are provided, and as shown in FIGS. are placed. Specifically, a pair of tubular bodies 3 are fixed to a support member 17 via a fixing metal fitting 16 so that they are opposite to each other in the left-right direction and are overlapped in the front-rear direction. For this reason, the front and rear tubular bodies 3 are designed to remove dew from the center of the ridge a by dividing the right side and left side from the center of the ridge a, so that dew removal work for one ridge a can be completed in a short time.

Moreover, in this embodiment, the two tubular bodies 3 are continuously arranged in the front-rear direction and integrated. For this reason, the blowing regions of the air blown out from the two tubular bodies 3 are continuous. Therefore, it is possible to expand the tea leaf removing area.

In addition, as shown in FIG. 5, by covering the front surface of the foremost tubular body 3 and the rear surface of the rearmost tubular body 3 with a cover 15, the inside of the front and rear covers 15 can be integrated with an open bottom. It is desirable to form a space. The cover 15 extends below the air ducts 5 and 6 to prevent the air discharged from the air ducts 5 and 6 from escaping back and forth. The cover 15 can be made of, for example, a plate material or a sheet material. By providing such a cover 15, the two tubular bodies 3 are combined to form a larger tubular body, and the air blown out from the air ducts 5 and 6 does not escape back and forth, and all the air is removed. In addition to being effectively used, part of the air blown in opposite directions to the right and left in the space becomes a swirling flow, shaking the tea plants in multiple directions, so that even more effective dew removal can be realized. Further, if the lower portion 15a of the cover 15 is bent inward, it is possible to make it more difficult for the blown air to escape to the outside.

In the above-described embodiment, an example in which the tea leaf plucking machine A is used as a moving body has been described, but the moving body may be any moving body that moves along the ridges a of the tea plants. The dew removing device B may be mounted on a mobile body that does not have a picking function.

A tea leaf plucking machine B dew removal device a ridge p lower airflow q upper airflow r upper layer airflow 1 frame 2 caterpillar 3 tubular body 4 connecting duct 4a tip 5, 6 fan duct 7 damper 9 crown 9a upper layer 9b lower layer 10 Wind direction adjusting pieces 11, 12 Cutouts 13, 14 Guide plate 15 Cover 15a Lower portion 16 Fixing bracket 17 Supporting member

Claims (7)

Equipped with a pipe body provided on a moving body that moves along the ridges of the tea tree,
The tubular body includes a connection duct connected to the blower, and a square tube-shaped fan duct continuously formed downstream of the connection duct,
The tea leaf dew removal device, wherein the air duct is formed to blow air obliquely downward with respect to the crown of the tea tree in either the left or right direction of the ridge of the tea tree. 2. A device for removing tea leaf dew according to claim 1, wherein an airflow direction adjusting piece is formed at the opening edge of said air duct for guiding downward the upper airflow of the air blown from the air duct. 2. A device for removing tea leaf dew according to claim 1, wherein a guide plate is formed at the opening edge of said air duct for guiding downward the airflow of the lower part of the air blown out from said air duct. The tubular body has a plurality of the fan ducts branched from the single connecting duct,
The plurality of air ducts according to any one of claims 1 to 3, characterized in that they are formed so as to obliquely blow air in the same direction when viewed in the left-right direction of the ridges of tea plants. Tea leaf dew remover. 5. The tea leaf dew removal device according to claim 4, wherein a damper for adjusting the amount of air supplied to the plurality of air ducts is arranged inside the tubular body. Equipped with at least two tubular bodies having the same shape,
6. The tea leaf dew removal device according to any one of claims 1 to 5, wherein the two tubular bodies are arranged side by side in a laterally inverted manner. 7. Tea leaf dew removal according to claim 6, characterized in that the front surface of the foremost tubular body and the rear surface of the rearmost tubular body are covered with covers to form an integral space inside the front and rear covers. Device.

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