JPS6118385Y2 - - Google Patents

Description

[Detailed description of the invention] This invention sequentially blows cold air and hot air onto the grains flowing down from the storage chamber toward the feeding section, and by the effect of temperature change on the grains, the moisture inside the grains is easily transferred to the surface, and the circulating hot air The present invention also relates to a grain drying device capable of uniformly drying grains using cold air without causing shell cracking, and at the same time, capable of satisfactorily drying any fraction of grains sufficient to fill a grain temperature raising drying passage.

Conventionally known grain drying equipment for drying grains containing a large amount of water using circulating hot air
In the case of the product described in Publication No. 88575, when the grains are exposed to high-temperature hot air for a long period of time, only the surface moisture evaporates quickly, and a so-called shell cracking phenomenon occurs in which the grains are dried with moisture remaining inside. It is generally well known that

Therefore, in order to dry the grains without causing the cracking phenomenon described above, it is necessary to quickly transfer the internal moisture of the grains to the surface, and then evaporate this transferred moisture by the circulating wind in order to make the grains uniform. Drying is achieved.

In order to promote the above-mentioned moisture diffusion/transfer action, it is necessary to change the temperature of the grain so that the internal moisture is transferred to the surface.

Therefore, in the present invention, grains to be circulated and flowed sequentially flow from the storage chamber through the cold air drying passage and the grain temperature increasing drying passage formed around the upper and lower sides of the mountain-shaped cold air fumarole frame arranged in the grain temperature changing chamber. In the process of drying, the grain temperature is repeatedly lowered and raised by blowing cold air and hot air, and the moisture inside the grain is quickly transferred to the surface due to the temperature change effect. The same mode of action as above can be achieved as long as there are enough fractional grains to fill the drying passage where the grain temperature rises. The object of the present invention is to provide a grain drying device that can dry grains satisfactorily.

In view of the above, in order to achieve the above object, the present invention has a structure including a pair of blind flow grain plates with the inside of the drying barrel oriented toward the supply path, and a blind upper side.
In addition, the lower side is formed into a porous shape and is partitioned by a pair of porous flow grain plates installed diagonally toward the feeding section.
A storage chamber is installed in the upper part, and a grain temperature changing room whose upper end is connected to the supply path is installed in the lower part.Inside the grain temperature changing room directly below the supply path, an intake window is opened on the front side, and the slopes on both the left and right sides are opened. A chevron-shaped cold-air fumarole frame formed by covering it with a ventilation plate is installed horizontally, and an exhaust window leading to an exhaust chamber equipped with a suction/exhaust fan is opened on the upper rear wall on both left and right sides of the grain temperature changing chamber. A cold air drying passage whose upper end communicates with the supply passage is formed on both the left and right sides of the board, and the front side of the grain temperature changing chamber at a lower level than the cold air blower frame is connected to a hot air generator. A pair of exhaust hot air chambers each connected to the exhaust chamber through an exhaust air window is installed on the outside, and the upper end is connected to the cold air drying passage and the lower end is connected to the grain temperature changing chamber on a pair of porous flow grain plates. This grain drying device is characterized in that grain temperature drying passages are formed which are respectively connected to the feeding portions.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus of the present invention will be described with reference to a preferred embodiment shown in the accompanying drawings.

In the drawings, reference numeral 1 denotes a drying cylinder in the shape of an oblong rectangular cylinder. A pair of porous flow grain plates 4, 4 having a porous shape on the lower side and disposed obliquely toward the feeding section 5.
A storage chamber 6 is provided in the upper part, and a grain temperature changing room 7 whose upper end communicates with the supply path 2 is provided in the lower part. In the grain temperature changing chamber 7 directly below the supply channel 2, an intake window 18 is opened on the front side, the slopes on both the left and right sides are covered with ventilation plates, and the bottom is further shielded with an appropriate wall plate to form a mountain-shaped cold wind fume. The frame 11 is installed horizontally along the longitudinal direction of the drying cylinder 1, and the grain temperature changing chamber 7
Exhaust windows 10, 10 leading to the exhaust chamber 9 equipped with a suction/exhaust fan 15 are opened on the rear wall of the upper left and right sides of Cold air drying passages 13, 13 are formed.

The front side of the grain temperature changing chamber 7 at a lower level than the above-mentioned mountain-shaped cold air blower frame 11 is connected to a hot air generator 12 housing a heat source, and the left and right outer sides of the pair of porous flow grain plates 4, 4 are A pair of exhaust heat air chambers 8, 8 are connected to the exhaust chamber 9 through exhaust heat air windows 17, 17 opened in the rear wall, respectively. Grain temperature raising drying passages 14, 14 are formed in the changing chamber 7, the upper ends of which are connected to the cold air drying passages 13, 13, and the lower ends of which are connected to the feeding section 5, respectively.

The bottom sides of the pair of left and right exhaust hot air chambers 8, 8 mentioned above are shielded by wall plates 16, 16 and are sealed.

The feeding section 5 looks into the unloading chamber 19 disposed at the lowest position of the drying cylinder 1, and an unloading gutter 21 whose one end is connected to the lower part of the elevator 20 is arranged directly below the unwinding section. There is. And feeding part 5
A feeding roll 22 is rotatably mounted on a storage shaft inside. Reference numeral 23 denotes an unloading screw housed horizontally in the unloading gutter 21, and 24 denotes a loading gutter installed horizontally at the top of the drying cylinder 1, the supply side of the loading gutter 24 being connected to the upper part of the elevator 20. .

Next, its effect will be explained.

Now, grains are filled and supplied into the storage chamber 6 via the elevator 20 and the carry-in gutter 24, and after this grain is filled into the storage chamber 6, the cold air drying passages 13, 13, and the grain temperature raising drying passages 14, 14. , hot air generator 12, suction exhaust fan 15, delivery roll 2
2 and each other operating member. Then, the outside air sucked into the chevron-shaped cold-air blower frame 11 through the suction window 18 by the suction action of the suction exhaust fan 15 passes through the porous portion of the chevron-shaped cold-air blower frame 11 into the grain temperature changing chamber 7 to the exhaust windows 10, 10 side. After passing through the exhaust chamber 9, the hot air is exhausted outside the machine by the suction exhaust fan 15, and the hot air generated by the hot air generator 12 is sucked into the exhaust hot air chambers 8, 8 through the perforated flow plates 4, 4. After that, the heated air passes through the exhaust hot air windows 17, 17 and the exhaust chamber 9, and is collectively exhausted to the outside of the machine by the suction exhaust fan 15.
As a result, the grains that gradually flow down through the cold air drying passages 13, 13 and the grain temperature raising drying passages 14, 14 due to the rotation of the feed rolls 22 are exposed to the circulating cold air and hot air, and the hot air drying effect occurs at the initial stage of drying. A part of the surface water is evaporated and the grain temperature has been increased.The grains are returned to the storage chamber 6 through the feeding section 5, the carry-out gutter 21, the elevator 20, and the carry-in gutter 24. Then, it is gradually cooled down naturally during the standing period in the storage chamber 6, and when it reaches the cold air drying passages 13, 13, the mountain-shaped cold air fumarole frame 11
Since the temperature of the grain is lowered by the contact action with the cold air that flows toward the exhaust windows 10, 10, the moisture inside the grain is quickly transferred to the surface due to the temperature difference.
Next, part of the surface moisture is evaporated by the cold air, and as the grain flows down the grain temperature raising drying passages 14, 14 again, the grain temperature is raised by being exposed to hot air, and at the same time, part of the surface moisture is evaporated and transpired. urge

Therefore, if the above-mentioned cold air drying action and grain temperature raising drying action are repeatedly performed through the storage chamber 6,
Internal moisture is gradually transferred to the surface and evaporated slowly, allowing grains to be dried uniformly without causing cracking.

Also, since the grain temperature raising drying passages 14, 14 are provided lower than the cold air drying passages 13, 13,
Even in the case of a fractional amount of grain sufficient to fill the grain temperature raising drying passages 14, 14, a uniform drying window can be achieved while performing the above-mentioned action.

In short, the present invention connects the inside of the drying cylinder 1 to the supply path 2.
A pair of blind flow grain plates 3, 3 installed diagonally toward It is partitioned by plates 4, 4, and a storage chamber 6 is provided in the upper part, and a grain temperature changing chamber 7 whose upper end side communicates with the supply path 2 is provided in the lower part. In this system, an intake window 18 is opened on the front side, and a chevron-shaped cold air blower frame 11 is installed horizontally, which is formed by covering the left and right slopes with ventilation plates. The exhaust windows 10, 10 leading to the exhaust chamber 9 equipped with the wind fan 15 are opened to open the mountain-shaped cold air blower frame 11.
Cold air drying passages 13, 13 whose upper ends communicate with the supply passage 2 are formed on both left and right sides of the grain temperature changing chamber 7, which is located at a lower level than the cold air blower frame 11. Porous grain plate 4,
A pair of exhaust hot air chambers 8, 8 connected to the exhaust chamber 9 through exhaust hot air windows 17, 17 are arranged on the left and right outer sides of the grain plate 4, respectively. Inside the chamber 7, there is a grain temperature drying passage 1 whose upper end is connected to the cold air drying passages 13, 13, and whose lower end is connected to the feeding section 5, respectively.
4, 14, the grains stored in the storage chamber 2 are exhausted from the chevron-shaped cold air blower frame 11 in the process of passing through the cold air drying passages 13, 13 and the grain temperature raising drying passages 14, 14 from the supply path 2. window 10,
From the hot air generator 12, the cold air that flows in one direction toward the grain temperature change chamber 7, the porous flow grain plates 4, 4, and the hot air that flows in the other direction toward the exhaust heat air chambers 8, 8 is efficiently exposed in order to change the grain temperature. can be given. Therefore, during the period of circulation, the material to be dried performs a moisture diffusion function that quickly transfers internal moisture to the surface due to the temperature difference, and then slowly achieves evapotranspiration of surface moisture using cold and hot air. As a result, the grain temperature raising drying passages 14, 14 are provided below the cold air drying passages 13, 13, so that the grains can be dried uniformly without causing shell cracking. Grain temperature rise drying passage 1
Even if the amount of fractional grains is sufficient to satisfy the requirements 4 and 14, the drying action in which the water diffusion action is carried out can be accurately performed and uniformly dried grains can be easily obtained.

[Brief explanation of the drawing]

The drawings show an embodiment of the device according to the present invention, in which FIG. 1 is an overall perspective view, FIG. 2 is a longitudinal sectional view, and FIG.
FIG. 3 is a longitudinal side view. DESCRIPTION OF SYMBOLS 1... Drying cylinder, 2... Supply path, 3, 3... Blind flowing grain plate, 4, 4... Porous flowing grain plate, 5... Feeding part, 6... Storage chamber, 7... Grain Temperature change room, 8...Exhaust heat air chamber, 9...Exhaust chamber, 10...Exhaust window, 11...
...Yamagata cold air fumarole frame, 12...Hot air generator, 13
...Cold air drying passage, 14...Grain temperature rising drying passage,
15... Suction exhaust fan, 17... Exhaust heat window, 18...
...Intake window.

Claims (1)

[Scope of utility model registration request] Inside the drying drum, there is a pair of blind flow grain plates installed diagonally toward the supply path, and a pair of blind grain plates formed on the upper side and porous on the lower side, and installed diagonally toward the drying section. A storage chamber is provided in the upper part, and a grain temperature change chamber whose upper end side communicates with the supply path is provided in the lower part, and the grain temperature change chamber directly below the supply path contains
An intake window is opened on the front side, and a chevron-shaped cold air fumarole frame formed by covering the left and right slopes with ventilation plates is installed horizontally, and the rear wall above the left and right sides of the grain temperature changing chamber is equipped with an exhaust system equipped with a suction exhaust fan. Exhaust windows leading to the chamber are opened to form cold air drying passages on both left and right sides of the mountain-shaped cold air fumarole frame, the upper ends of which communicate with the supply path, and hot air is generated on the front side of the grain temperature changing chamber at a lower level than the cold air fume frame. A pair of exhaust hot air chambers connected to the apparatus and connected to the exhaust chamber through exhaust hot air windows are arranged on the left and right outer sides of the pair of porous grain plates, respectively, to adjust the grain temperature on the pair of porous grain plates. A grain drying device characterized in that a grain temperature drying passage is formed in a changing chamber, the upper end of which connects to a cold air drying passage, and the lower end of which connects to a drying part.