JP2008228665A - Steamed tea leaf-treating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steamed tea leaf-treating apparatus in which steamed tea leaves can be efficiently kneaded without causing no clog of the steamed tea leaves. <P>SOLUTION: The steamed tea leaf-treating apparatus as a primary means is composed of a cylindrical treatment body, a rotary shaft piercing into the treatment body, and a plurality of stirring blades set on the rotary shaft, wherein a charging body whose rotary shaft is provided with screw blades, is set on the upper surface part of the treatment body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a device for softening steamed tea leaves (hereinafter referred to as steamed tea leaves).

  Fresh tea leaves picked at the tea garden are steamed with a steamer for tea making, and then processed into crude tea through processes such as a rough koji process, a twisting process, a middle koji process, a koji process, and a drying process. Among these, steaming heat treatment suppresses the activity of enzymes in tea leaves by steaming fresh tea leaves for several tens of seconds, and softens the tea leaves to enhance the effect of the next coarse koji process. The rough koji process is a process in which steamed heat-treated steamed tea leaves are heated and blown sufficiently while drying, and the kneading of the steamed tea leaves in this koji process significantly affects the quality of the product.

Fresh tea leaves are picked several times from early summer to late autumn, and the hardness of fresh tea leaves varies depending on the time of picking fresh tea leaves, the location where the tea tree is cultivated, and the climate. When the time for picking fresh tea leaves is late, the fresh tea leaves become larger and tend to harden. If the green tea leaves are large and hard, the steamed tea leaves will not be squeezed in the rough koji process and a product with high taste and aroma will not be obtained, so it is necessary to make the steamed tea leaves flexible before the koji process. . There are two types of tea-making steamers: a zoning-type tea-making steamer and an agitating-type tea-making steamer. Ingredients tend to be insufficient. Therefore, conventionally, a steaming tea leaf processing device (see, for example, Patent Document 1) is provided between the band-type tea making steamer and the rough koji process to soften the steamed tea leaves that remain hard. On the other hand, in the case of a stirring type steaming machine for tea making (for example, see Patent Document 2), the rotation of the stirring blades was increased to soften the steamed tea leaves.
Japanese Patent Laid-Open No. 7-31375 JP 2002-51701 A

  As shown in FIG. 6, the conventional steamed tea leaf processing apparatus has a cylindrical processing cylinder 31 and a charging cylinder 32 installed horizontally, and is provided with a single rotating shaft 33 that passes through the processing cylinder 31 and the charging cylinder 32. . In general, the space in which the apparatus can be placed is determined. In this apparatus, the processing cylinder 31 is shortened due to the input cylinder 32, and the processing is insufficient compared to the desired processing. Therefore, when processing is performed by increasing the rotation of the stirring blade 34, the rotation of the rotating shaft 33 must be increased, and the rotating shaft 33 penetrates the charging cylinder 32. When the screw blade 35 is rotated at a high speed, the steamed tea leaf does not fall into the screw blade 35 from the charging port 37, and the steamed tea leaf is clogged in the vicinity of the charging port 37. And it was difficult to balance the processing amount and the input amount. When steamed tea leaves were clogged, it took a very long time to remove them, causing troubles such as injury to workers. Furthermore, there is a problem that when the tea leaves are clogged with one apparatus, the entire tea making line is stopped.

  This invention makes it a subject to provide the processing apparatus of the steamed tea leaf which can knead | mix a steamed tea leaf efficiently, without filling a steamed tea leaf.

  The steamed tea leaf processing apparatus of the first means of the present invention comprises a cylindrical processing cylinder, a rotating shaft penetrating the processing cylinder, and a plurality of stirring blades provided on the rotating shaft, and is provided on the upper surface of the processing cylinder. A feeding cylinder equipped with a screw blade on the rotating shaft is provided. The steaming tea leaf processing apparatus of the second means comprises a cylindrical processing cylinder, a rotating shaft penetrating the processing cylinder, and a plurality of stirring blades provided on the rotating shaft, and screw blades on the side surface of the processing cylinder. A charging cylinder is provided for the rotating shaft. The steaming tea leaf processing apparatus of the third means rotates the rotating shaft that penetrates the processing cylinder and the rotating shaft that penetrates the charging cylinder in the steaming tea leaf processing apparatus of the first or second means by independent driving means. The steaming tea leaf processing apparatus of the fourth means is the same as the steaming tea leaf processing apparatus of the first or second means, the rotating shaft that penetrates the processing cylinder and the rotating shaft that penetrates the charging cylinder are rotated by the same driving means.

  According to the first or second means of the present invention, since the processing cylinder and the charging cylinder of the steaming tea leaf processing apparatus are separately provided, the rotation of the processing cylinder and the charging cylinder can be adjusted respectively. Even if the rotation is increased, steamed tea leaves are not clogged in the charging cylinder. Thereby, smooth tea making can be performed. Further, since the processing cylinder and the charging cylinder partially overlap each other and the processing cylinder can be made longer than before, it can be kneaded more than before. Furthermore, efficient kneading at a low speed can be selected.

  According to the third means of the present invention, the rotational speeds of the rotation shafts of the processing cylinder and the charging cylinder can be arbitrarily changed, and the rotational speed suitable for charging and the rotational speed suitable for the kneading process can be appropriately changed. it can. By sharing the driving means by the fourth means of the present invention, the necessary parts can be reduced and the cost can be reduced.

  This will be described with reference to FIGS. 1 is a cylindrical and fixed processing cylinder, 2 is a cylindrical and rotating processing cylinder, the processing cylinders 1 and 2 are installed horizontally, and the processing cylinder 2 is a motor (not shown). To rotate. Reference numeral 3 denotes a rotating shaft, which passes through a little below the center of the processing cylinders 1 and 2 and is rotated by a motor 10 which is a driving means. Reference numeral 4 denotes a stirring blade, which is provided on the rotary shaft 3 in a spiral shape while changing the angle by 90 degrees. Reference numeral 5 denotes a crosspiece provided in the processing cylinder 1, and 6 denotes a crosspiece provided in the processing cylinder 2. Reference numeral 11 denotes an input cylinder for guiding steamed tea leaves to the processing cylinder 1, which is provided on the upper surface of the processing cylinder 1 in this embodiment. Reference numeral 12 denotes a horizontal rotating shaft, which includes a horizontal screw blade 13, penetrates the charging cylinder 11, and is rotated by a motor 14 that is a driving means. Reference numeral 16 denotes an input chute for guiding steamed tea leaves to the input cylinder 11, and the upper surface of the input chute 16 is used as an input port 15. 21 is an input conveyor for transporting steamed tea leaves to the input port 15, and 22 is a takeout conveyor for transporting steamed tea leaves from the outlet 7 to the next tea making apparatus.

  Steamed tea leaves 8 that have been steamed with a steamer for tea making are fed into the inlet 15 of the apparatus as described above. The steamed tea leaves 8 guided by the charging chute 16 fall into the charging drum 11 and are sent to the processing drum 1 by the screw blades 13. At this time, the screw blade 13 rotates at about 50 to 150 rpm. The steamed tea leaves 8 that have entered the processing cylinder 1 are inclined so that the processing cylinders 1 and 2 are slightly inclined toward the outlet 7, and the stirring blade 4 is also guided to the outlet 7. Moving. The processing cylinder 2 rotates at about 20 to 70 rpm, and the stirring blade 4 rotates at about 150 to 1000 rpm, and the stirring blade 4 rotates at a higher speed. At this time, the steamed tea leaves 8 are sandwiched between the processing cylinders 1 and 2 and the crosspieces 5 and 6 and the stirring blades 4 below the processing cylinders 1 and 2, kneading and kneading and cutting the large steamed tea leaves 8. Be affected. As a result, the steamed tea leaves 8 are softened and uniformly thinned. The processing cylinder 2 may not rotate depending on the degree of softening of the steamed tea leaves 8 (the rotating one can be softened more). The softened steamed tea leaves 8 are discharged from the take-out port 7 and are transported to the roughing process (including other steamed tea leaf processing devices and the like) by the take-out conveyor 22 and the like. The softened steamed tea leaves 8 are sufficiently swallowed even in the coarse koji process, and are processed well in the subsequent processes, so that a product with good quality can be manufactured.

  Normally, the rotary shaft 12 provided with the screw blades 13 and the rotary shaft 3 penetrating the processing cylinders 1 and 2 rotate at a fixed rotational speed. However, depending on the processing capacity of the front and rear tea making apparatuses and the softened state of the steamed tea leaves 8, Only the rotation shaft 12, only the rotation shaft 3, or the rotation shaft 12 and the rotation shaft 3 can be changed to arbitrary rotation numbers. Of course, the rotation speeds of the rotary shaft 12 and the rotary shaft 3 do not have to be the same, and may be set to rotation speeds suitable for charging and kneading. If it does in this way, adjustment of the input amount of steamed tea leaves 8 can be made easy. It is also easy to soften the steamed tea leaves 8 as desired.

  When the screw blades 13 are in the horizontal position as in the present embodiment, the height can be made lower than in the embodiments described later (those in which the screw blades 28 are oriented vertically). Further, in the case of the vertically oriented screw blade 28, only one side (upper side) can be supported by a pillow block (not shown), but in this embodiment, both ends of the screw blade 13 are supported by pillow blocks (not shown). Can reduce the failure.

  Another embodiment is shown in FIG. FIG. 3 shows an embodiment in which the position where the charging cylinder 11 is provided is different from that in FIG. In this embodiment, the charging cylinder 11 is provided above the side surface of the processing cylinder 1. In this way, when installing the apparatus, it is effective when the installation place has a height restriction.

  Another embodiment is shown in FIG. In FIG. 4, the rotating shaft 3 penetrating the processing cylinders 1 and 2 and the rotating shaft 12 penetrating the charging cylinder 11 are connected by a belt 18 and rotated by a single motor 17. In this way, only one driving means is required, which leads to cost reduction.

  Another embodiment is shown in FIG. FIG. 5 shows an embodiment in which the rotary shaft 27 and the screw blades 28 in the charging cylinder 26 are vertically oriented. The rotating shaft 27 is rotated by a motor 29. Therefore, the rotating shaft 27 in the charging cylinder 26 and the rotating shaft 3 of the processing cylinders 1 and 2 can rotate independently of each other.

The partial front sectional view of the steamed tea leaf processing apparatus of the embodiment of the present invention. Sectional drawing of FIG. Sectional drawing of another Example. The front fragmentary sectional view of another Example. The front fragmentary sectional view of another Example. The front partial sectional view of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 (Fixed type) processing cylinder 2 (Rotating type) processing cylinder 3 Rotating shaft 4 Stirring blade 5 Crossing 6 Crossing 7 Outlet 8 Steamed tea leaf 10 Motor 11 Loading cylinder 12 Rotating shaft 13 Screw blade 14 Motor 15 Input 16 Input Chute 17 Motor 18 Belt 19 Transmission 21 Input conveyor 22 Extraction conveyor 25 Input port 26 Input cylinder 27 Rotating shaft 28 Screw blade 29 Motor 31 Processing cylinder 32 Input cylinder 33 Rotating shaft 34 Agitating blade 35 Screw blade 36 Motor 37 Input port 38 Outlet 39 Input conveyor 40 Extraction conveyor

Claims (4)

  A cylindrical processing cylinder, a rotating shaft penetrating the processing cylinder, and a plurality of stirring blades provided on the rotating shaft, and a charging cylinder provided with screw blades on the rotating shaft are provided on the upper surface of the processing cylinder. Steamed tea leaf processing device characterized by.   A cylindrical processing cylinder, a rotating shaft penetrating the processing cylinder, and a plurality of stirring blades provided on the rotating shaft, and a charging cylinder provided with screw blades on the rotating shaft are provided on the side surface of the processing cylinder. Steamed tea leaf processing device characterized by.   3. The steamed tea leaf processing apparatus according to claim 1 or 2, wherein a rotating shaft that passes through the processing cylinder and a rotating shaft that passes through the charging cylinder are rotated by independent driving means.   3. The steamed tea leaf processing apparatus according to claim 1 or 2, wherein a rotating shaft that penetrates the processing cylinder and a rotating shaft that penetrates the charging cylinder are rotated by the same driving means.

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