JPS6028957Y2 - Cylindrical drying chamber type grain ventilation drying equipment - Google Patents

Description

[Detailed description of the invention] The present invention has a drying chamber (or grain tank) in which the grains to be dried are placed, which is formed in a cylindrical or polygonal cylinder shape, and the grains placed inside the drying chamber are dried. The present invention relates to an improvement in a cylindrical drying room-type grain ventilation drying device that is operated by supplying hot air from below the floorboard of the drying room through numerous ventilation holes provided in the floorboard.

In the above-mentioned cylindrical drying chamber type grain ventilation drying device, when the amount of grains put into the drying chamber is large and the height of the grains piled up on the floorboard of the drying room becomes high, the grains are piled up below the floorboard. A state in which the hot air sent in does not penetrate through the grain layer due to insufficient pressure to pass through the layer of grain deposited on the upper surface of the floorboard and escape above the grain layer. , the function of supplying hot air (drying air) to the grains placed in the drying chamber will be lost, so when the grains are placed in the drying chamber and dried, the height of the pile of grains will increase. , so that it is within the range that the hot air sent from under the floorboards can pass through.
There are restrictions on the amount of material that can be filled into the drying chamber.

For this reason, in the conventional grain ventilation drying device of the cylindrical drying chamber type, for example, as shown in Japanese Utility Model Application Publication No. 49-44772, a vertical cylinder is provided at the axial center of the drying chamber, and the The ventilation rack, which has a chevron-shaped cross section that protrudes radially from the peripheral wall of the cylinder toward the peripheral wall of the drying chamber, is placed on the floorboard of the drying room to the limit of the thickness at which the hot air sent from below the floorboard passes through upwards. The shelves are placed at a height corresponding to the top surface of the grain layer when the grains are piled up, and when a large amount of grains are piled up, the hot air blown from under the floorboards creates a mountain-shaped cross section. After reaching the ventilation rack, it is guided into the cylinder through the ventilation rack and passes above the grain layer, thereby maintaining the drying function.

However, this method only allows hot air to be constantly supplied to the grains up to the height of the ventilation rack, which has a chevron-shaped cross section and is placed on a shelf in the drying chamber, but does not allow the grains to pass above the ventilation rack and accumulate in the drying chamber. Since hot air is not supplied to the grains in the drying chamber, when drying a large amount of grains in the drying chamber, the grains in the drying chamber are machined one by one, starting from the lower layer. It is necessary to circulate and flow the grain by taking it outside and returning it to the upper part of the drying room. Therefore, not only is a grain transfer device that circulates and flows the grain with high efficiency required, but also a shelf installed in the grain tank. A problem arises in that the ventilation pattern of the chevron-shaped cross section prevents the uniform circulation of grains.

The purpose of the present invention is to solve these problems that occur in cylindrical drying chamber type grain ventilation drying equipment, and to solve the problem that even if a large amount of grain is stacked in the drying chamber with a thick pile height, A new method that efficiently stirs and flows the grains to prevent uneven drying and accumulation, and allows hot air sent from below the floorboards to blow through the entire layer of accumulated grains from bottom to top. The goal is to raise the issue.

The grain ventilation drying device according to the present invention, which is a distant relative of this object, is a grain ventilation drying device of the cylindrical drying chamber type, in which the grains are placed in the upper part of the inner cavity of the cylindrical-shaped drying chamber. A spiral guide shaft that rotates on its own axis while revolving around its base end located at the center of the chamber is configured and equipped so that the rotation direction of the shaft can be switched between forward and reverse directions. A vertical auger, which protrudes vertically into the grain layer deposited in the drying chamber and acts to raise the grains, is attached to the guide shaft in the axial direction of the guide shaft by rotation of the guide shaft. The vertical auger is displaced to the distal end and proximal end of the guide shaft, thereby switching the direction of rotation of the guide shaft. The feature is that the switching operation of the rotational direction is controlled.

Next, an example of implementation will be described in detail with reference to the drawings.

In Fig. 1, A is a cylindrical drying chamber-type grain ventilation drying device in which a drying chamber a (or grain tank) for drying grains is formed into a cylindrical shape. The chamber a (grain tank) is constructed by installing a cylindrical tank 1 on a base 2, and installing a net or porous structure at the bottom of the inner cavity of the tank 1 at a position slightly higher than the top surface of the base 2. By installing a breathable floor plate 3 such as a board, the inner cavity of the tank 1 is formed above the floor plate 3, and grains are fed to the drying room a by a grain lifting machine in the tank 1. 4 (packet elevator), and the discharge port of the grain lifting machine 4 (not shown)
Grain feeding cylinder 5 (screw conveyor in this example) connected to
The tip end side of the tank 1 is pushed into the drying chamber a from the top of the tank 1, and the outlet 6 at the tip is opened into the drying chamber a, and the grains are fed into the drying chamber provided at the bottom of the grain lifting machine 4. This is done by supplying the grains from the hopper 7 into the grain lifting machine 4, carrying them upwards, and releasing them from the upper part of the inner cavity of the drying chamber a.

In addition, hot air (dry air) is supplied to the loaded grains by
The space formed below the floor plate 3 mentioned above at the bottom of the inner cavity of the tank 1 is assumed to be an air guide path, and by communicating the air outlet 9 of the hot air supply device 8 with this air guide path, the air guide path is formed. This is done by making the hot air sent to the floor plate 3 blow up from the lower surface side of the floor plate 3 toward the grains deposited on the floor plate 3.

Further, the grains are discharged from the drying room a by the floor plate 3.
An auger 10 is mounted on the top surface of the floorboard 3, which rotates around the center of the floorboard 3 and collects grains at the center of the floorboard 3. This is accomplished by providing a discharge port 11 for dropping the grains collected by the auger 10 downward, and communicating the discharge port 11 with a carry-out conveyor 12.

Note that the carrying-out conveyor 12 has its terminal end in the conveying direction communicating with the lower part of the grain lifting machine 4, and the discharge port of the grain lifting machine 4 can be changed from communicating with the grain feeding cylinder 5 to a different shape. By switching to a state where it communicates with a certain outlet (not shown),
The grains carried out by the carry-out conveyor 12 are carried upward by a grain lifting machine 4 and taken out from the outlet through a chute.

20 is placed in the upper part of the inner cavity of the drying chamber a, and rotates in revolution across the inner cavity of the drying chamber a, with the base end located at the center of the drying chamber a as the axis of revolution. A guide shaft that is horizontally supported so that it rotates on its own axis, and has a spiral guide groove 2 on the circumference.
1.

The guide shaft 20 has its proximal shaft end 20a mounted on the supporting machine frame 30, and the supporting machine frame 30
The output shaft of a motor 31 whose rotation direction can be switched between forward and reverse, which is assembled into The guide shaft 20 is supported by a vertical support shaft 41 suspended from a support frame 40 so as to be freely rotatable about the vertical axis of rotation, and furthermore, a ring is attached to the tip side of the guide shaft 20. By attaching the body 22 and supporting the wheel body 22 on a rail 23 which is annularly installed on the inner surface of the peripheral wall 1a of the drying chamber a, a horizontal shaft support is provided between the support machine frame 30 and the rail 23. Also, by operating the motor 31, the wheel body 22 rotates on its own axis and rotates on its own axis.
As it rolls on the rail 23, it revolves around the vertical support shaft 41 mentioned above.

50 is a vertical auger arranged in the drying chamber a so as to vertically stir and flow the grains deposited in the drying chamber a;
The upper end of the rotating shaft 51 is rotatably supported on the support frame 52 so that the lower end hangs down as a free end, and the upper end of the rotating shaft 51 is attached to the support frame 52. The output shaft of the mounted motor 53 and an appropriate speed reduction mechanism 5
4, so that the operation of the motor 53 drives and rotates the grains to raise them.

The vertical auger 50 supports the support frame 52, which supports the upper end of the support frame 52, on the guide shaft 20 so as to be movable in the axial direction of the guide shaft 20. Guide groove 2 continuous to the spiral on the circumferential surface of
1 and a guide member 55, and when the guide shaft 20 rotates, the support frame 52 moves in the axial direction of the guide shaft 20.

Further, the displacement operation of the support frame 52 in the axial direction of the guide shaft 20 is performed by assuming that the motor 53 rotates in the positive direction, and thereby the guide shaft 20 sends out the support frame 52 toward one end side. While the support frame 52 is rotating as shown in FIG. When the motor 31 rotates the guide shaft 20, the lever 56 rotates the guide shaft 20.
When the support frame 52 is displaced toward the other end and the antenna lever 57 comes into contact with the stopper 25 at the other end and is pressed, the motor 31 is rotated in the opposite direction. The guide shaft 20 is used as a control means for switching the direction of rotation of the guide shaft 20 between forward and reverse so that the rotation of the guide shaft 20 is switched back to normal.

Next, to explain the function and effect, the grain ventilation drying device of the cylindrical drying chamber type according to the present invention has a drying chamber in the upper part of the inner cavity of the drying chamber a formed in a cylindrical shape as described above. A helical guide shaft 20 that rotates on its own axis while revolving around its disposed base end as an axis of revolution is mounted so that the direction of rotation of the guide shaft 20 can be switched between forward and reverse directions. A vertical auger 50 is attached to the guide shaft 20 by rotation of the guide shaft 20, and the vertical auger 50 acts to vertically penetrate into the grain layer deposited in the grain a and raise the grain.
The vertical auger 50 is suspended so as to be sequentially displaced in the axial direction of the guide shaft 20, and the auger 50 is suspended so that the rotational direction of the guide shaft 20 is switched by displacing the vertical auger 50 to the distal end side and the proximal end side of the guide shaft 20. Guide shaft 20 with displacement operation of 50
The guide shaft 20 mounted above the inner cavity of the drying chamber a
As the auger 50 rotates while revolving, the vertical auger 50 suspended from the guide shaft 20 is sequentially displaced in the axial direction of the guide shaft 20 and moves inside the drying room a together with the guide shaft 20. It moves along the circumferential direction, and as a result of the combination of these two movements, it sequentially moves in a spiral shape within the drying chamber a.

Therefore, the vertical auger 50 supported on the guide shaft 20 acts on only a portion B of the grain layer deposited in the drying chamber a as shown in FIG. The working part B starts to move spirally in the drying chamber a on a plane, and by switching the rotation direction of the guide shaft 20, the spiral movement of the working part B changes from normal to reverse. .

From this, the grains deposited in the drying chamber a are constantly agitated by the vertical flow of the vertical auger 50, and are supplied with hot air from below the floor plate 3, resulting in more efficient drying. In addition, the upward and downward blowing of the hot air becomes much better in the part B that is agitated by the vertical auger 50, so even if the grains are piled up thickly, the hot air can pass through sufficiently. Therefore, a large amount of grain can be dried at one time, and the agitation by the vertical auger 50 improves the fluidity of the grain.
When drying the grains packed inside while circulating and flowing them by the operation of the carry-out conveyor 12 and the grain frying machine 4,
Since the part where grains stay is eliminated, uneven drying can be prevented.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional front view of the apparatus according to the embodiment of the present invention, FIG. 2 is a front view of the main parts of the same, and FIG. 3 is a perspective view of the main parts of the same. Explanation of drawing symbols, A... Grain ventilation drying device, a
... Drying room (grain tank), 1 ... Tank,
1a... Peripheral wall of the drying room, 2... Base,
3...Floor plate, 4...Grain lifting machine (packet elevator), 5...Grain feeding cylinder, 6...
・Discharge port, 7... Supply hopper, 8...
・Hot air supply device, 9... Air outlet, 10...
... Auger 11 ... Discharge port, 12 ...
... Carrying out conveyor, b... Air guide path, 20...
... Guide shaft, 20a ... Shaft end of guide shaft, 21 ... Spiral guide groove, 22 ...
Wheel body, 23...Rail, 24.25...
・Stopper, 30...Support machine frame, 31...
...Motor 32...Deceleration mechanism, 40...
...Support frame, 41... Vertical support shaft, 50.
... Vertical auger, 51 ... Rotating shaft, 5
2... Support machine frame, 53... Motor,
54...Deceleration mechanism, 55...Guide member, 56, 57...Tental lever.

Claims (1)

[Scope of utility model registration request] In a grain ventilation drying device of the cylindrical drying chamber type, the upper part of the inner cavity of the cylindrical drying chamber is rotated around the base end located at the center of the chamber. A spiral guide shaft that rotates while moving is mounted so that the direction of rotation can be switched between forward and reverse, and the guide shaft is fitted with a spiral guide shaft that vertically penetrates into the grain layer deposited in the drying chamber. A vertical auger that acts to lift the grains is suspended so that it can be sequentially displaced in the axial direction of the guide shaft as the guide shaft rotates, and the vertical auger is attached to the tip and base of the guide shaft. A cylindrical drying chamber type grain characterized in that the switching operation of the rotational direction of the guide shaft is controlled by the displacement operation of the auger so that the rotational direction of the guide shaft is switched by displacing the auger to the end side. Ventilation drying equipment.