JPH0116544Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is used in a tea manufacturing line that successively includes a steamer, a coarse rolling machine, a medium rolling machine, a fine rolling machine, etc., and produces so-called medium-fired tea that has been processed by the medium rolling machine. This invention relates to a wind sorting machine that uses wind power to separate and sort tea leaves during tea processing into leaf parts and stem parts to obtain product tea with less stem parts mixed in.

Background Technology and Problems Tea production is carried out several times a year at intervals, and tea made from the new leaves that sprout between April and May has a good aroma and taste, and has a high trading value. Tea produced during this period is called Shincha or Ichibancha, but tea made from leaves that sprout further after harvesting are successively called Nibancha, Sanbancha, etc., to differentiate them.

In the case of Ichibancha, the stems mixed in are also very young, green in color, and have a deep flavor, so there is no need to separate them from the leaves. However, when it comes to second and third tea, the stems are thick and branch-like, and stand out like red sticks among the green leaves, making them look unattractive and taste poor.

Therefore, when trading second and third tea, it is better to separate the stems from the leaves as much as possible, and trade the leaves as leaves and the stems as stems, which will result in higher prices.

Therefore, a sorting machine is sometimes installed in the tea production line to separate the leaves and stems, but on the other hand, with Ichibancha tea, there is no need to separate and sort the leaves and stems; Sorting reduces the yield of leaves and reduces the total income, so there are two completely different routes in the tea manufacturing line: one that does not go through a sorter exclusively for first tea, and one that goes through a sorter for second and subsequent teas. Two routes were prepared.

In other words, as shown in Fig. 4, a bifurcated chute a that can freely switch the transfer direction is arranged after the medium puddling machine, and one of the chute a ₁ goes to the input port of the sorting machine b, and the other chute a ₂
passed over the sorting machine and faced the detour conveyor d connected to the next process c. e is a transfer conveyor from the sorter.

However, this bifurcated chute a and the detour conveyor d would be completely redundant equipment if both of the aforementioned routes could be shared in one route.

Purpose of the invention The present invention was developed in view of the current situation. During sorting, the stems slide down a separation tube and are stored in a receiving box below, while the leaves are transported from the sorting hood to the transfer conveyor below. When separating and sorting is not necessary, such as when the leaves and stems are brown, the leaves and stems can be sent to the transfer conveyor by sliding down the separation cylinder, and then transferred to the next process machine. , conventionally installed bifurcated chute a and detour conveyor d
The aim is to reduce the equipment cost of the tea manufacturing line by eliminating the need for electrical equipment that controls these.

Summary of the invention Therefore, in the wind sorter of the present invention, a blower tube with a fan connected to its lower end is arranged below the conveyor in an inclined manner so that its upper end is located below the conveyor's delivery end and the air blower. A breathable sorting hood with an opening at the bottom is placed above the front end of the tube, a transfer conveyor is placed below the opening of the sorting hood, and a separating tube is connected to the bottom of the blast tube to separate the particles. A chute in which a receiving box is disposed below the delivery port of the cylinder, and the operating position can be freely switched between a case where the upper side is located below the delivery port of the separating cylinder and a lower side facing the transfer conveyor, and a case where at least the upper side is retracted from the above position. It is characterized by having the following.

Example Next, the present invention will be explained based on illustrated embodiments.

1 consists of a monokotsukku structure made of pressed steel plates, and a bucket conveyor 2 that slopes upward is installed.
The main body includes a hopper 3 at the starting end of the conveyor, and a fan 4 and the like built in below the conveyor.

In the bucket conveyor 2, a rectangular bucket is formed by pressing a steel plate, and both ends of the bucket are attached to two chains on the left and right sides, and the conveyor is circulated between sprockets 5 and 5 that are mounted on the main body 1. It becomes.

Below the bucket conveyor 2, a blower tube 6 is arranged so as to be inclined in almost the same direction as the bucket conveyor 2, and the upper end of the blower tube 6 faces slightly ahead of the delivery end of the bucket conveyor 2. A fan 4 is connected to the lower end of the tube 6, and the tea leaves falling from the bucket conveyor 2 are separated and sorted by air pressure from the fan 4.

Directly below the delivery end of the bucket conveyor 2, at the middle of the lower side of the blast cylinder 6, a partial opening 6a is formed in the cylinder, and a separation cylinder 7 is connected to the opening 6a at an acute angle in a substantially human shape.

In this embodiment, a damper 8 is further pivoted to the acute-angled branching point between the blast tube 6 and the separation tube 7, which allows the air passage of the blast tube 6 to be closed and opened by operating a switching lever (not shown). In particular, rubber 7a is stretched on the rear surface of the outlet of the separation cylinder 7.

Reference numeral 9 denotes a receiving box disposed below the outlet of the separation tube 7, which is removable.

Reference numeral 10 denotes a sorting hood which largely covers the front upper part of the delivery end of the bucket conveyor 2 and the upper end of the blower tube 6, and has a hopper-shaped lower part and an opening, and the rear wall 10a is continuous with the upper end of the blower tube 6. Moreover, a wire mesh 11 is stretched over the upper side and a part of the front side to make it breathable.

Further, below the opening of the sorting hood 10, a transfer conveyor 12 is arranged which is connected to a fine rolling machine which is the next process machine.

Reference numeral 13 denotes a leveling tool that is pivoted on the middle upper side of the bucket conveyor 2 above the front of the hopper 3, and 14 is a drive unit that adjusts and changes the transfer speed of the bucket conveyor 2 and the air volume blown by the fan.

Reference numeral 15 denotes a chute that spans between the outlet of the separation cylinder 7 and the transfer conveyor 12, and as an example,
When the rear face of the opening of the sorting hood 10 is covered as shown in Fig. 2, when it is stood up as shown in Fig. 2, and when it is folded down as shown in Fig. 1, when it is stood up with the rear face of the separation tube 7 covered, and when it is fallen down. In each case, its lower side is directed toward the transfer conveyor 12 below the opening of the sorting hood 10, and it can assume two operating positions.

That is, the lower part of the chute 15 is pivotally mounted 16 to a part of the main body, and can be tightened and fixed at each operating position.

Function To explain the function of the apparatus of this embodiment, first, the use of the main body of the wind sorter for separating and sorting the leaves and stems of second tea and later tea will be explained with reference to FIG.

In this case, first, the damper 8 is lowered onto the separation tube 7 in order to fully open the air passage of the blower tube 6, and the chute 1 is
5 is stood up and placed immediately behind the rear wall 10a of the sorting hood 10 to cover the rear surface of the opening.
After the fan 5 is assigned the role of a cover and the fan 4 is rotated, the bucket conveyor 2 is started.

After preparing like this, add medium heat tea to hopper 3.
When the tea leaves are put into the container, they are transported while being leveled to a constant thickness by a leveling tool 13 located at the upper front, and then headed toward the delivery end of the bucket conveyor 2. When the tea leaves fall from the sending end, they are moved to the sorting hood 10 by the pressure air of the fan 4 blowing up from the blower tube 6 toward the vicinity of the sending end.
However, since the thick stems and branches are heavy, they fall directly below the delivery end of the bucket conveyor 2, enter the blast tube 6, and move from the opening 6a of the blast tube 6 to the separation tube 7. It slides down there and is stored in the receiving box 9 below, while the thin, shiny stems and leaves are blown upward in front of the sorting hood 10.
As the wind escapes from the wire mesh 11, it falls softly inside the sorting hood 10, and the transfer conveyor 1 below.
Reach the top of 2. The transfer conveyor 12 sends the high-quality tea leaves, which have been separated and sorted and are mostly composed of leaves, to the next fine rolling machine.

At this time, the chute prevents the loosely falling tea leaves from flying into the receiving box 9 at the rear,
Ensure separation and sorting.

In addition, by adjusting the speed of the bucket conveyor 2, the height of the leveling tool 13, and the air volume of the fan 4, the degree of separation and sorting of stems and branches and the processing speed can be adjusted.

Next, we will explain a case where it is not necessary to separate and sort the leaves and stems, as in the case of Ichibancha, in other words, a case where it is used simply as a conventional detour.

In this case, as shown in FIG. 1, the damper 8 is raised to fully open the air passage of the blower tube 6 to prevent tea leaves from falling into the fan 4, the receiving box 9 is removed, and the chute 15 is moved to the separation tube 7. Rubber 7a at the outlet
is pressed and bent to fall backward to cover the rear surface of the delivery port of the separation tube 7, the chute 15 is given the role of a chute, and only the bucket conveyor 2 is started without rotating the fan 4.

Note that if the receiving box 9 is located low and does not interfere with the chute 15, the receiving box 15 does not need to be removed.

In this case, when the medium-heated tea falls from the bucket conveyor 2, all the tea leaves fall directly under the delivery end, are prevented from entering the fan 4 by the damper 8, and are prevented from entering the separating tube. From 7 onwards, the raw material continuously slides down the chute and falls onto the transfer conveyor 12, where it is transferred to the next fine milling machine. Therefore, there is no need for the conventionally required bifurcated chute or detour conveyor, and two routes are formed within the same device, thereby reducing the equipment cost of the tea manufacturing line.

FIG. 3 shows another embodiment. In the previously described embodiment, the rear surface of the outlet of the separation tube 7 is covered with rubber 7a so that the chute cover 15 can pass through to the rear. An auxiliary chute 7 that is formed short and can be raised and lowered at the rear of the outlet of the separation cylinder 7
b is provided, and the same effects as those of the above-mentioned embodiment can be achieved.

In the above embodiment, the damper 8 is provided, and when there is no need to separate the leaf portion and the stem portion, the damper 8 is closed to prevent tea leaves from entering the fan 4. can also be omitted. However, in that case, the fan 4 should be operated at all times, or the opening of the blower tube 6 should be kept in operation.
A is provided as low as possible to prevent tea leaves from entering the fan 4.

Also, regarding the structure of the chute 15, the main points are as follows.
If the operating position of the chute 15 can be changed while a portion of the chute 15 is connected to the main body 1, and there is no need to separate the leaf part and the stem part, the upper side of the chute 15 is the delivery end of the separating cylinder 7. The tea leaves sliding down the separation cylinder 7 located at the lower part are guided onto the transfer conveyor 12. On the other hand, when it is necessary to separate the leaves from the stems, the chute 15 is used to transfer the separated and sorted tea leaves to the separation cylinder. It is sufficient if the object can be evacuated to a position that does not prevent the object from falling from the object 7 to the receiving box 9, and various structures other than this embodiment can be adopted.

Effects of the invention In this invention, during sorting, the stems are stored in a receiving box below the separation tube by sliding down the separation tube, and the leaves are transferred from the sorting hood to the next process via the transfer conveyor below. When separation and sorting is not necessary, as in the case of This eliminates the need for the conveyor d and the electrical equipment that controls them, and reduces equipment costs for the tea manufacturing line.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional side view of one embodiment to which the present invention is applied, Fig. 2 is a partial longitudinal sectional side view showing its operation, Fig. 3 is a longitudinal sectional side view of main parts showing another embodiment, and Fig. 4. FIG. 2 is a schematic plan view showing a conventional line configuration. 2...Bucket conveyor, 3...Hopper, 4
...Fan, 6...Blower tube, 6a...Opening, 7...
... Separation cylinder, 9 ... Receiving box, 10 ... Sorting hood,
12...transfer conveyor, 13...scraper, 1
5...Shoot.

Claims (1)

[Scope of utility model registration request] Below the conveyor, a blower cylinder with a fan connected to its lower end is arranged at an angle so that its upper end is located below the delivery end of the conveyor, and an opening is provided at the bottom in front of and above the conveyor delivery end and the upper end of the delivery pipe. A sex sorting hood is covered, a transfer conveyor is arranged below the opening of the sorting hood, a separating cylinder is communicated with the lower side of the blower cylinder, and a receiving box is arranged below the outlet of the separating cylinder.
The wind sorting machine further comprises a chute whose operating position can be freely switched between a case where the upper side is located below the outlet of the separating tube and a lower side facing the transfer conveyor, and a case where at least the upper side is retracted from the above position. .