JPH0244718Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is a leaf tobacco dryer, specifically, leaf tobacco is suspended in a drying chamber in multiple stages, and hot air is circulated from the bottom of the drying chamber to the top to dry the leaf tobacco. Regarding a leaf tobacco dryer.

(Prior art) Conventionally, when hanging leaf tobacco in the drying chamber of a leaf tobacco dryer, the leaf tobacco is braided onto a rod-shaped hanger, and the leaf tobacco is attached to the left and right sides of the hanging device in a distributed manner. Hanging is carried out by mounting two or three tiers in a grid pattern on hanger receiving bars provided on the side wall.

However, as shown in Figure 5, gaps tend to form between the leaf tobaccos hung next to each other, and it is possible for tobacco to pass through the tobacco from the bottom of the drying room. A passage-like space may be formed that goes straight to the top, and hot air blows through this space, which not only reduces drying efficiency but also may cause quality deterioration such as uneven drying and drying. .

Furthermore, leaf tobacco shrinks and its volume decreases as it dries, so gaps are formed between adjacent leaf tobaccos as the drying progresses, and these gaps enlarge as the drying progresses. The above-mentioned disadvantages were unavoidable in the dryer.

(Problem to be solved by this invention) The problem to be solved by this invention is to hang leaf tobacco in a drying chamber in multiple stages by plaiting leaves on rod-shaped hangers, and to circulate hot air from the bottom of the drying chamber to the top. In a leaf tobacco drying device that dries leaf tobacco by fluidizing it, an atrium is created by creating resistance to the hot air that passes through the passage-like air space that is formed between adjacent leaf tobaccos and goes straight up and down from the bottom of the dryer. This is to prevent hot air from spreading in a well-balanced manner within the drying room.

(Means for Solving the Problems) In order to achieve the above object, the leaf tobacco drying device of the present invention is provided between the hung leaf tobacco and between the leaf tobacco and the side wall of the drying chamber to cover the space between them. comprising a ventilation resistor, the ventilation resistor having an elastic and breathable member having a length approximately corresponding to the width between the hanger receiving bars provided oppositely on the side wall of the drying chamber for mounting the hanger; It is formed into a thick plate shape or a prismatic shape having a width approximately equal to the width between the hanger receiving parts formed on the hanger receiving crosspiece, and a supporting metal core is inserted in the axial direction of the plate shape, and the leaf tobacco is made into a leaf. The hangers are alternately mounted on the hanger receiving crosspieces via cored metal.

(Function) According to the above-mentioned technical means of the present invention, the hot air rising through the spaces between the horizontally adjacent leaf tobaccos suspended in multiple stages is blown by the ventilation resistor. Since the air is prevented from rising and given resistance, the back pressure slows down the flow, and the hot air is temporarily trapped below the ventilation resistor, allowing it to spread in a well-balanced manner throughout the drying room.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In the figure, A is a leaf tobacco dryer, a is its drying chamber, and one side is integrally equipped with a hot air generator b.

In the drying room a, the floor 3 is formed in the shape of a drainboard,
The lower part of the room is connected to the hot air generator b through the slatted floor 3, and an exhaust port 5 is provided in the upper part of the side wall 4 adjacent to the hot air generator b. It is in contact with hot air generator b.

A pair of side walls 4' facing orthogonally to the side wall 4 adjacent to the hot air generator b of the drying room a have a cross section L.
The type of hanger receiving bars 5 are provided in multiple stages, for example, two or three stages, facing each other.

Hanger receiving sections 6 are cut out in each of the hanger receiving beams 5 at predetermined equal intervals, and the hanger receiving sections 6 are arranged in a grid pattern on the side wall 4'.

A hanger 1 is installed on the hanger receiving crosspiece 5 across the opposing hanger receiving part 6, and an airflow resistor 2 is installed between the adjacent hangers 1.

The hanger 1 is formed in the shape of a round bar, and with this as a core, leaf tobacco sticks are arranged on both sides of the core, and the leaves are knitted using a sewing machine or the like.

Therefore, the tobacco tobacco is hung from the hanger 1 in a distributed manner and suspended in the drying chamber a in a multi-stage manner.

The ventilation resistor 2 is made of an elastic and breathable material, such as sponge, and has a length approximately corresponding to the width between the opposing hanger receiving bars 5 and a width between the adjacent hangers 1 hung on the hanger receiving portions 6. It is formed into a thick plate shape or a prismatic shape having a width substantially equal to that of , and a supporting metal core 7 is inserted in the axial direction.

That is, the ventilation resistor 2 has a core insertion hole 2 in the axial direction.
1 is drilled, and the core metal insertion hole 2 is inserted from the bottom surface.
A notch 22 reaching 1 is formed, and the core bar 7 is fitted into the core metal insertion hole 21 through the notch 22.

Both ends of the core metal 7 protrude from both ends in the axial direction of the ventilation resistor 2 and are bent downward, and the bent portions 71 are hooked to the hanger receiving crosspiece 5 to secure the ventilation resistor 2.
is mounted and supported between the hanger receiving crosspieces 5.

Therefore, the ventilation resistor 2 is located between the leaf tobacco rods hung adjacent to each other, and covers the air space between the leaf tobacco rods. It is also provided between the leaf tobacco canisters at both left and right ends and the side walls 4 to close the air space between them.

Note that the ventilation resistor 2 is formed to have a width approximately equal to the width between adjacent hangers 1 hung on the hanger receiving portion 6 as described above, and has a width that is approximately the same as the width between adjacent leaf cigarettes hung on the hanger 1 by leaf weaving. The space between A and B is wider than B, so in the mounted state, the leaf tobacco is compressed from both sides by the leaf tobacco before and in the early stage of drying, but as drying progresses, the leaf tobacco becomes shriveled. When the volume of the leaf tobacco tree decreases, the pressing force from both sides weakens, so that the leaf tobacco tree expands and recovers as its volume decreases.

On the other hand, the hot air generator b is equipped with a furnace 9 equipped with a burner 8, a blower 10, an exhaust heat recovery machine 11, etc., and is also equipped with an outside air inlet 12, an exhaust duct 13, etc., and supplies the hot air to the slatted floor of the drying room a. drying room a
At the same time, the air inside the drying chamber a is sucked from the exhaust port 5 of the drying chamber a, and a part of the air is sent to the exhaust duct 1.
3 to the outside, and a part of the air is discharged to the outside through the outside air inlet 12.
It is designed to be reheated together with outside air introduced via the exhaust heat recovery machine 11 and sent to the drying room a.

Therefore, hot air circulates in the drying chamber a from the bottom to the top.

Thus, the leaf tobacco drying apparatus A carries out the drying process of the leaf tobacco suspended in the drying chamber a in accordance with the conventional method by using the above-mentioned circulating flow of the hot air. The ventilation resistor 2 applies resistance to the hot air rising between the tobacco tobacco plants, thereby preventing blow-through.

Therefore, the hot air not only spreads evenly within the drying chamber a and rises, but also the back pressure slows down the flow and temporarily traps the air below the ventilation resistor 2, causing the leaf tobacco to dry. It goes around every corner and contacts the leaf tobacco efficiently.

It should be noted that the above-mentioned ventilation resistor 2 does not necessarily need to be provided between the leaf tobacco rows of all the tiers, and the purpose can be sufficiently achieved even if it is provided only between the leaf tobacco rows of the top row.

(Effects) As described above, in this invention, a ventilation resistor with air permeability is placed between the leaf tobaccos hung adjacent to the drying room, so that hot air can be prevented from blowing between the leaf tobaccos hung adjacently. To prevent this, the hot air can be distributed in a well-balanced manner throughout the entire drying room, and the hot air can be brought into contact with every corner of the leaf tobacco.

Therefore, it is possible to prevent uneven drying of leaf tobacco and half-drying, thereby improving drying efficiency and quality of dried leaves.

In addition, the ventilation resistor is made of an elastic material, and has a length approximately corresponding to the width between the hanger receiving bars provided oppositely on the side wall of the drying room in order to mount the hangers, and a hanger formed on the hanger receiving bars. Since it is formed into a thick plate or prismatic shape with a width approximately equal to the width between the receiving parts, it is possible to prevent variations in the width of the spaces between the tobacco leaves due to variations in the thickness of the leaf tobacco woven into the hanger, as well as the drying of the leaf tobacco. The ventilation resistor can easily accommodate the difference in the spacing between the tobacco leaves before drying, at the beginning of drying, during drying, and at the end of drying, which is caused by the leaf atrophy and the volume of the leaf tobacco decreasing as the leaf atrophies. It is possible to reliably cover the spaces between the suspended leaf tobacco. In addition, the ventilation resistor is axially inserted through the support core bar and mounted on the hanger receiving frame alternately with hangers made of leaf woven leaves, so that the leaf tobacco can be hung between adjacent leaf tobaccos and in the leaf tobacco drying room. The space between the side walls can be easily and reliably filled.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of a leaf tobacco drying device showing an embodiment of the present invention, FIG. 2 is an enlarged perspective view of the main parts,
FIG. 3 is a sectional view taken along the line -- in FIG. 2, FIG. 4 is an explanatory diagram showing a rising state of hot air, and FIG. 5 is an explanatory diagram showing a rising state of hot air in a conventional leaf tobacco drying apparatus. DESCRIPTION OF SYMBOLS 1...hanger, 2...ventilation resistor, 4...side wall of drying room, 5...hanger receiving bar, 6...hanger receiving part, a...drying room, b...leaf tobacco.

Claims (1)

[Scope of utility model registration request] In a leaf tobacco drying device, leaf tobacco knitted on rod-shaped hangers is suspended in multiple stages in a drying chamber, and hot air is circulated from the bottom to the top of the drying chamber to dry the leaf tobacco. A ventilation resistor is provided between the drying chamber and the side wall of the drying chamber to cover the space therebetween, and the ventilation resistor is provided with an elastic and breathable member facing the side wall of the drying chamber in order to mount the hanger. formed into a thick plate or prismatic shape having a length approximately equivalent to the width between the hanger receiving bars and a width approximately equivalent to the width between the hanger receiving parts formed on the hanger receiving bars, and extending in the axial direction. A leaf tobacco drying device characterized in that a supporting metal core is inserted through the leaf tobacco drying device, and the leaf tobacco is alternately mounted on a hanger receiving frame via the core metal with hangers made of knitted leaves.