JPS5824155Y2 - Circulation air intake control device for tobacco dryers - Google Patents

Description

[Detailed description of the invention] The present invention enables complete circulation, partial circulation, and partial circulation of super-acidified dry hot air by simply adjusting the left and right reciprocating movement of a single control valve body disposed in the circulation path. The present invention relates to a circulation air intake/exhaust adjustment device for a tobacco dryer that can quickly and accurately dry tobacco by performing partial intake/exhaust and complete intake/exhaust operations quickly and accurately.

Leaf cigarette dryers are generally divided into a fermentation stage, a yellowing stage, a color fixing agent, and a back bone drying stage, and after changing the mesophyll components, the tobacco is dried and fixed.

Therefore, since the temperature, humidity, and time are regulated, the drying hot air circulating in the drying chamber can be completely circulated, completely exhausted, or partly circulated and partly sucked and exhausted depending on the drying conditions. .

To do this, the circulation tube must be provided with a circulation path, an intake window, and an exhaust window.

In order to carry out the above three functions, conventionally, as described in Japanese Utility Model Publication No. 50-1094, a single adjustment plate was rotated about a rotation axis.

When using an adjusting means with such a configuration, the end of the adjusting plate inevitably does not come into close contact with the wall surface forming the intake window and the exhaust window when hot air is fully circulated, and a gap is created between the two, resulting in accurate measurement. Not only is it not possible to achieve a complete circulation function, but it is also impossible to perform an accurate complete exhaust function, and as a result, the desired temperature and humidity cannot be maintained, making it impossible to obtain high-quality dried tobacco. There were drawbacks.

Therefore, in order to solve the drawbacks of conventionally known cigarette dryers, this invention targets one circulation path that allows dry hot air from the drying chamber to flow into the circulation tube, and the intake window that allows outside air to flow into the circulation tube. Furthermore, either the circulation path or the intake window may be opened and closed by a single control valve body that moves horizontally along the guide shaft, or both the circulation path and the intake window may be opened and closed. In addition, an exhaust control valve is installed on one side of the drying chamber that automatically opens as the pressure inside the drying chamber increases, so that the intake window does not create a gap due to the control valve body during complete circulation. I wonder if I can close my mouth accurately.
Even during complete exhaust operation, one of the circulation paths can be accurately closed without creating a gap by the regulating valve body, thereby maintaining the temperature and humidity in the drying chamber at an appropriate level, allowing for good tobacco drying work. The purpose of this invention is to obtain a circulation air intake and exhaust device for a tobacco dryer that can be used in a tobacco dryer.

In view of the above, and in order to achieve the above object, the present invention has a structure in which a drying chamber and a circulation tube are connected so that the insides thereof are communicated via a circulation path provided above and below, and the front side of one of the circulation paths is An intake window having the same shape as the circulation path is provided in the circulation tube at the opposite position, and a guide shaft is installed horizontally between the center of the circulation path and the center of the intake window. A single control valve body that can open or close either one of the intake windows or open the circulation path and the intake window at the same time is allowed to freely move left and right, and a drying chamber is installed on one side of the drying chamber. A circulation intake/exhaust control device for a cigarette dryer, characterized in that it is equipped with an exhaust control valve that automatically opens as the pressure rises, and according to this device,
When the seven control valve bodies are moved and adjusted horizontally in the left and right directions along the guide shaft to completely close the intake window without any gaps and open the circulation path, the super acidified dry hot air is sent to the drying chamber and the circulation tube. It is possible to completely circulate the air and dry the tobacco, but when both the circulation path and the intake window are opened by moving the control valve, a portion of the drying hot air is circulated. At the same time, some of the fresh outside air is taken in, and the excess dry hot air is exhausted to the outside through an exhaust control valve.The drying chamber is heated by properly performing a partial circulation and partial intake/exhaust action in the required amount ratio. 1
In addition to being able to maintain the internal temperature and humidity at an appropriate level at all times, when one of the circulation paths is closed with the control valve without any gaps and the intake window is opened, the drying air is sent to the outside through the circulation tube and the drying chamber. It is possible to easily perform a complete intake and exhaust operation that performs ventilation while exhausting air.

The device of the present invention has a complete circulation function, a partial circulation intake/exhaust function, and a partial circulation function for drying hot air in tobacco drying by simply adjusting the horizontal movement of a single control valve body in the left and right direction.
Because the three functions of complete intake and exhaust operations can be carried out easily, it is possible to accurately close the circulation path and the intake window without creating a gap.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the device of the present invention shown in the accompanying drawings will be described below.

Reference numeral 1 denotes a drying chamber made of a material capable of transmitting and absorbing solar heat, such as a vinyl coating or other suitable wall plate, so as to be almost airtight.At the bottom of the drying chamber 1 is a ventilation chamber 4.
A porous partition plate 2 is laid through the porous partition plate 2, and a drying area 3 containing a large number of cigarettes A is stacked three-dimensionally on this porous partition plate 2.

The drying chamber 1 and the circulation tube 5 have circulation paths 6.6 provided at upper and lower positions.
In addition, a heat exchanger 7 and a blower 8 are housed and arranged inside the circulation cylinder 5 so that superacidified dry hot air is circulated through the drying chamber 1.

In the circulation cylinder 5 at the front facing position of one circulation path 6,
An intake window 13 having the same shape as the circulation path 6 is provided, and mounting rods 9, 9 are provided on the circulation path 6 and the intake window 13, respectively. A single guide shaft 10 passing through the center and the center of the intake window 13 is fixedly installed.

A guide shaft 1 is installed horizontally in a fixed manner within the circulation cylinder 5.
0, a single regulating valve body 11 is suspended so that it can freely reciprocate left and right, and one end of operating strings 12a and 12b are respectively attached to the left and right sides of the regulating valve body 11. , by pulling the operation strings 12 a and 12 b to adjust the movement in the left and right directions, and open or close either the circulation path 6 or the intake window 13 at any time, or open and close both the circulation path 6 and the intake window 13. Open them together.

Note that the cross-sectional shape of the circulation path 6 and the intake window 13 is the same as that of the control valve body 1.
It is more convenient to match the cross-sectional shape of No. 1.

14 is an exhaust control valve disposed on one side of the drying chamber 1,
The exhaust control valve 14 is automatically opened when the outside air pressure sucked into the drying chamber 1 from the intake window 13 through the circulation tube 5 exceeds a predetermined pressure, and the exhaust control valve 14 is automatically opened by the pressure. 1
The moist and hot air inside is discharged to the outside, and the temperature and temperature that match the drying conditions are maintained.
It has the role of maintaining humidity.

Next, its effect will be explained.

A large number of drying areas 3 containing the tobacco tobacco harvested this time are housed three-dimensionally and overlappingly in the drying chamber 1, and the regulating valve body 11 is adjusted by moving to the left along the guide shaft 10 by pulling the tow string 12b. to completely close the intake window 13.

In such a state, if the heat exchanger 7 and the blower 8 are started and the super-acidified dry hot air is blown in the direction of the arrow, the dry hot air will remove leaves while flowing through the overlapping drying area 3. The circulation path 6,6.
The water is circulated through the circulation cylinder 5, heated again by the heat exchanger 7, and then blown into the drying chamber 1.

Due to this complete circulation of dry hot air, the inside of the drying chamber 1 has a temperature and humidity suitable for the drying conditions, and rapid drying is accomplished.

By the way, if the temperature and humidity inside the drying chamber 1 become higher than a predetermined value as the drying progresses, the control valve body 11 can be adjusted by pulling the traction edge 12a by moving the control valve body 11 slightly to the right along the guide shaft 10. If the position is set to the solid line in Figure 1, the circulation path 6 and the intake window 13
are both opened to allow dry hot air to circulate inside the circulation cylinder 5, while fresh outside air is sucked into the circulation cylinder 5 through the intake window 13 by the suction action of the blower 8, and excess dry hot air is removed from the exhaust control valve 14. The drying operation can be continued by accurately performing part of the circulation to discharge the air outside the machine and part of the suction/exhaust action to maintain the temperature and humidity in the drying chamber 1 to suit the drying conditions.

By repeating the above-mentioned actions, the drying process approaches completion, or the hot air in the drying chamber 1 is completely replaced.
Furthermore, when it is desired to finish the drying by one-way ventilation of the circulating hot air, by moving the regulating valve body 11 to the right along the guide shaft 10 and completely blocking the circulation path 6, the air is sucked in through the fully opened intake window 13. The fresh outside air is heated by a heat exchanger 7 and then introduced into the drying chamber 1.

However, the pressure inside the drying chamber 1 becomes higher than a predetermined value due to the intake action of the outside air, and the exhaust control valve 14 is automatically pushed open due to this pressure action, and a portion of the drying hot air is sent to the drying chamber 1 so that the pressure inside the drying chamber 1 reaches a predetermined value. The air is automatically exhausted until the air is completely exhausted, and the tobacco is completely dried.

[Brief explanation of drawings]

The drawings show one embodiment of the device of the present invention, and the first
The figure is a front view with the main part cut away, FIG. 2 is an enlarged front view of the main part with a part cut away and broken, and FIG. 3 is an enlarged perspective view of the main part. 1...Drying room, 5...Circulation cylinder, 6,6
... Circulation path, 10 ... Guide shaft, 11.
...Adjustment valve body, 13...Intake window, 14.
...Exhaust control valve.

Claims (1)

[Scope of utility model registration request] The drying chamber and the circulation cylinder are connected so as to communicate internally through circulation paths provided at upper and lower positions, and the circulation cylinder at the front facing position of one of the circulation paths is provided with an intake window having the same shape as the circulation path, A guide shaft is installed horizontally between the center of the circulation path and the center of the intake window, and either the circulation path or the intake window is opened or closed on the guide shaft, or the circulation path and the intake window are connected to the guide shaft. A single control valve body capable of simultaneously opening the drying chamber is suspended so as to be movable from side to side, and an exhaust control valve is provided on one side of the drying chamber to automatically open as the pressure inside the drying chamber increases. A circulation intake/exhaust control device for a tobacco dryer, characterized in that: