JPS5942638Y2 - Ventilated stirring dryer - Google Patents

Description

[Detailed description of the invention] This invention uses forced circulation of dry hot air and intermittent agitation to quickly dry materials, and reduces only low-humidity waste hot air to drying. The present invention relates to a ventilation type agitating dryer that achieves remarkable improvement in drying efficiency while ensuring effective use.

As a device for drying materials that do not exhibit a certain granularity, such as grains, grass, and tangerine peels, etc., by the circulation action of dry hot air, there are many devices inside the main body, each equipped with a hopper on the supply side and a discharge window on the discharge side. A blowhole with a hole in the blowhole is installed, and a drying chamber is formed in the upper part of the blowhole, and a blower chamber equipped with a hot air generator is divided in the lower part. On the other hand, a structure in which a plurality of exhaust stacks are connected through an open connection is well known.

By the way, in the above-mentioned apparatus, the material supplied onto the blow disk is dried by blowing dry hot air in a substantially stationary state, so the drying speed is slow and the drying is uneven. It is not possible to obtain a good dried product.

Moreover, the drying hot air that was applied to the materials was not recirculated and used, but instead was discharged into the atmosphere, resulting in a large loss of hot air, which increased the cost of the drying process mentioned above. This is something that is strongly dependent on fundamental improvements.

In view of the above, the present invention is designed to intermittently stir and mix the materials stored in a drying chamber in a substantially stationary state using a material stirrer that moves back and forth, so that all the materials are uniformly exposed to drying hot air. In addition to accelerating drying and obtaining uniformly dried products, only the waste hot air with low humidity is returned to the hot air generator after it has been used for drying, thereby increasing drying efficiency. The purpose of the present invention is to provide a ventilation type agitation dryer that achieves drying operations while further promoting the drying process and significantly reducing drying costs. A preferred embodiment shown will now be described.

Reference numeral 1 denotes a main body equipped with a hopper 2 on the supply side and a discharge window 3 on the discharge side, and inside the main body 1, a blow disk 4 with a large number of blowholes 5 opened on the surface is laid horizontally. Fumarole 4
A drying chamber 6 is formed in the upper part of the chamber, and a blowing chamber 7 equipped with a hot air generator 8 is formed in the lower part.

The hot air generator 8 is equipped with a blower impeller 9 and a burner 1 in order to obtain dry hot air at a temperature suitable for quickly drying the material.
It is composed of 0.

The upper body of the drying chamber 6 formed as described above has a plurality of exhaust pipes 11, 1213, . . . extending from the starting end toward the discharge side.
. . . One end is open-connected to exhaust the hot air after being used for drying into the atmosphere, and the discharge side of the exhaust pipe 13 located closest to the exhaust window 3 is connected to a hot air generator 8. The exhaust hot air with low humidity is returned to the hot air generator 8 and used again.

14...... is a plurality of exhaust pipes it, 12,1
This is a partition guide wall vertically installed on the inner surface of the main body 1 between the parts 3 and 3 which are connected through the openings.

A pair of guide rails 15.15 are installed on both left and right sides of the above-mentioned blow disk 4 from the supply side to the discharge side, and a material stirrer 16 is mounted on the guide rails 15.15. 16 is moved back and forth along the guide rail 15.15.

Ideally, the material stirrer 16 is a self-propelled type.

Next, the operation of the present invention will be explained.

Now, as shown in the figure, if the material is continuously fed into the hopper 2 and the hot air generator 8 is operated to blow the generated dry hot air from the blowing chamber 7 through the blowhole 5 all at once, the hopper 2 The material falling onto the fumarole disk 4 is sequentially blown to the discharge side by the fume action of the dry hot air, and the material is deposited to a certain thickness on the blower disk 4 while being discharged from the discharge window 3.

When the material is deposited to a certain thickness on the blower plate 4 in the manner described above, the material is continuously fed without stopping the material feeding operation, and at the same time the blowing action of the dry hot air is continued, and the material agitator 16 is moved to the guide rail as appropriate. If the material is moved back and forth intermittently along the line 15.15, the material will be evenly exposed to the drying hot air due to the drying action of the drying hot air flowing from the bottom to the top and the stirring and mixing action of the material, and it will dry evenly and for a short time. At the same time, the exhaust hot air after being used for drying is passed through the partition guide wall 1.
4. Each exhaust pipe 11, 12, 1 is guided by
3. It acts to exhaust air from... into the atmosphere.

By the way, in the above-mentioned drying operation, the material is supplied from the supply side to the discharge side, so the dry hot air flowing near the supply side becomes moist hot air containing a lot of moisture and is discharged from the exhaust stack 11. In contrast, the dry air flowing near the exhaust window 3 becomes exhaust hot air with a low moisture content due to the progress of drying, so only the exhaust hot air with low humidity is passed through the exhaust pipe 13. The reduced air is sucked into the intake side of the hot air generator 8.

Then, the above-mentioned exhaust hot air is mixed with new dry hot air, and the air is again blown into the drying chamber 6 from the blowing chamber 7, thereby making it possible to efficiently dry the material while saving fuel consumption.

In short, since the present invention has the above-mentioned configuration, the material moving on the blow disk 4 from the supply side toward the discharge window 3 side while exhibiting a deposited state of a constant thickness is moved by the dry hot air flowing continuously. Due to the blowing action and the intermittent stirring and mixing action caused by the reciprocating operation of the material stirrer 16, the material is evenly exposed to drying hot air and quickly dried to a uniform state, and the material is discharged from the discharge window 3. Only the low-humidity exhaust hot air exhausted into the exhaust stack 13 located closest to the air is returned to the hot air generator 8 and can be used again as dry hot air, so dry hot air can be effectively recycled without wasting it. It has the advantage of being able to carry out drying work of materials continuously under economical conditions.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall perspective view, Fig. 2 is a partially cutaway front view, Fig. 3 is a longitudinal sectional front view of the same, and Fig. 4 is a front view of the same. FIG. 2 is a sectional view taken along the line A-A. 1...Body, 2...Hopper, 3...
...Discharge window, 4... Fumarole chamber, 8...
・Hot air generator, 11, 12゜13... exhaust stack,
16... Material stirrer.

Claims (1)

[Scope of utility model registration request] A hopper is installed on the supply side and a discharge window is installed on the discharge side. A blow disk with a large number of blowholes is installed inside the main body, and a drying room is installed in the upper part of the blow disk, and a hot air generator is installed in the lower part. A plurality of exhaust pipes are open-connected in the upper part of the drying room from the starting end to the discharge side, and a material agitator that reciprocates along the guide rail is mounted on the blow disk. A ventilation type agitating dryer characterized in that the discharge side of the exhaust pipe closest to the discharge window is connected to the intake side of a hot air generator.