JPS6124876Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a grain drying device used in a dry store (grain storage and drying facility) that is constructed by installing an appropriate number of drying chambers in parallel, and the floorboard on which grains are deposited is a ventilation floor. The present invention relates to an improvement in a grain drying device comprising a grain drying tank (bin) having a rectangular cross section and a drying air guide path installed below the floor plate of the grain drying tank.

The above-mentioned grain drying device dries the grains deposited on the air-permeable floorboard of the grain drying tank by sending drying air (hot air) blown from below the floorboard. Therefore, when the grain layer deposited on the floorboard becomes thick, the drying air cannot blow through the grain layer due to the lack of static pressure of the drying air blown from below the floorboard, making it impossible to dry the grains. There is a problem in that the height of the grains deposited on the floorboard cannot be set very high when the grains are loaded into the drying tank.

The present invention was developed to solve this problem, and even if the amount of grain put into the grain drying tank is increased and the pile height is increased, the drying wind blown from below the floorboards will not affect the grains. The purpose is to blow through the grain layer.

The present invention has been made based on the knowledge obtained as a result of repeated various experiments in order to achieve the above-mentioned object. That is, in the above-mentioned grain drying device, the grains placed in the grain drying tank and deposited on the floorboard of the bin are separated from the lower end side in the deposited grain layer. When a vertical auger whose transfer direction is set to transfer from the top to the top end is inserted into the vertical shaft and activated, grains in a fairly wide area around the grain feeding blades of the vertical auger flow upward and accumulate. The grains surrounding the rising grain layer flow toward the lower end of the vertical auger, creating a state of circular flow, and at the same time, this rising The spacing between particles of the flowing grains becomes coarser, allowing drying air to blow through the grain layer around the vertical auger, and drying by the grains flowing upward around the vertical auger. It was found that wind blowing was sufficient even when the height of the grain layer was significantly raised to near the ceiling of the bin, so a vertical auger with a transport direction set to cause the grains to flow upward was used. , vertically plunges into the grain layer that is placed in the grain drying tank and deposited on the floorboard, and
By sequentially displacing the operating position of the vertical auger in the lateral direction, the above-mentioned problems are attempted to be solved at once.

Next, the means of the present invention will be explained in detail with reference to the drawings with reference to embodiments.

In Figure 1, a is a grain drying tank into which the grains to be dried or stored are loaded using a suitable loading machine (not shown), which is rectangular in plan view as shown in Figure 2. The floor plate 1 on which the grains are deposited is formed into a permeable floor having numerous holes 2.... The countless holes 2... are arranged in one direction (the first The outlet 3 is formed on the floor plate 1 so as to be inclined in the direction of the arrow W in the figure, and the outlet 3 is installed at the bottom of the grain drying tank a.
It is installed at the end of the floorboard 1 on the terminal side in the direction W.

Reference numeral b designates an air guide path installed below the floor plate 1 of the grain drying tank a, and communicates with the air outlet 4 of the dry air supply device C at the end on the starting end side in the aforementioned direction W.

10 is a second
As shown in the figure, it is a machine frame that can be hung across the ceiling from side to side, and a truck part 12 is provided at each of the left and right ends, and each of the left and right ends 12, 12 Each wheel 11... is attached to the upper end portion of the left and right machine walls 5... of the drying tank a, respectively.
Guide rail 20 installed in the front and back direction along...
. . . It is supported above and is movable back and forth by means of these trolley portions 12, 12.

30... is installed in the vicinity of each upper end of the left and right machine walls 5, 5 of the drying tank a, in order to forcibly move the machine frame 10 in the front and back direction of the drying tank a, endlessly in the front and back direction. A sprocket 3 that receives each running end of the conveyor chain in the front and back direction.
1... is a supporting machine frame 3 that is appropriately provided at the outer position of each upper end of the machine wall 6... before and after the grain drying tank a.
A rotating shaft 3 that supports a horizontal shaft in the left-right direction via 2.
3... are supported by the rotating shafts 33...
One of the rotating shafts 33 is driven and rotated by a motor 35 that is transmitted through a conduction chain 34. The motor 35 is connected to a limit switch 4 which is provided so as to collide with each other when the machine frame 10 moves to the front and rear ends of the drying tank a.
It is a reversing motor that is controlled so that the rotation direction is switched between forward and reverse by the operation of 0 and 40, and by switching the rotation direction of the motor 35, the conveyance direction, which is the rotation direction of the conveyance chain 30, is reversed. It is designed to be switched. And this conveyance chain 3
0 has a lug 37 provided on an appropriate chain link 36 thereof connected to a truck portion 12 installed at each left and right end of the machine frame 10, thereby driving the conveyance chain 30. and move the machine frame 10 to the grain drying tank a.
It is designed to move back and forth in the front and rear directions.

50 is a vertical auger that is mounted vertically on the machine frame 10 and plunges vertically into the grain layer stretched in the grain drying tank a, and its auger shaft 5
A mounting machine frame 52, which pivotally supports the upper end of the machine frame 1, is supported on the machine frame 10 so as to be movable along the longitudinal direction of the machine frame 10. And the vertical auger 50
is set so that when its auger shaft 51 is rotated, the grain transfer direction is from the bottom to the top, as shown by the arrow Y in FIG. It is made to flow upward.

60 is a transfer device that reciprocates the vertical auger 50 along the machine frame 10; in this example, the machine frame 10 is formed into a rotating shaft that freely rotates with respect to the left and right truck parts 12, 12; That machine frame 10
A spiral 61 is provided on the circumferential surface of the machine frame 1, and the mounting machine frame 52 is screwed onto the spiral 61.
0 through the output shaft of a motor 62 mounted on the trolley part 12 and a speed reduction mechanism 63, and the circuit of the motor 62 is connected to a circuit that switches the direction of rotation of the motor 62 between forward and reverse. In addition to providing limit switches respectively, these switches 64,
By installing the operating rods 67 and 68 of 65 on the mounting frame 52 of the auger 50 so as to protrude in an angular shape in the front and back of the moving direction of the mounting machine frame 52,
The auger 50 is moved along with the mounting frame 52 by the machine frame 10 which is a spiral shaft rotated by the operation of the motor 62, and as a result of the movement, the mounting machine frame 52 is moved to the machine frame 10.
The motor 62 moves to one end of the machine frame 10, operates one operating rod 67, reverses the direction of rotation of the motor 62, moves in the opposite direction, and then reaches the other end of the machine frame 10 and starts the other operation. Although the auger 50 is moved back and forth by repeatedly returning the rotation of the motor 62 to normal rotation by the rod 68, it is of course possible to use other suitable structures.

Note that the motor mounted on the mounting frame 52 of the vertical auger 50 to drive it (not clearly shown in the drawing), the motor 62, and the motor 35 that drives the conveyance chain 30 are omitted in the drawing. However, there is a cord connected to the power source, and among the cords, the cord that connects to the drive motor of the vertical auger 50 is
A cord cable is used, and the cord cable is supported by a support arm (not shown) movably installed above the grain drying tank a together with or separately from the machine frame 10 described above. Also, the upper part of the inner cavity of grain drying tank a is left open upwards, but this is because it is installed indoors, so it may be possible to cover it with an appropriately shaped roof or provide a ceiling. Of course. In the illustrated embodiment, 7 is a shutter provided at the discharge port 3 so as to be openable and closable, and 8 is a screw conveyor for conveying the grains discharged from the discharge port 3.

Next, to explain the function and effect, the grain drying device of the square tubular drying tank type according to the present invention configured as described above stores a large amount of grains in the grain drying tank a high above the floor plate 1. A vertical auger 50 that plunges vertically into the grain layer when it is piled up.
However, by causing the surrounding grains to flow upward, the density between the grains becomes coarser due to the upward flow, and the zone where wind permeability is improved can be seen in a plan view, although only partially. The drying air generated in the vertical direction of the grain layer and sent to the air guide path b below the floor plate 1 passes between the particles in this zone from below to the upper side and blows through to the upper surface of the grain layer. It becomes like this. and,
The zone where the drying wind blows through is a displacement operation that sequentially changes the location of the vertical auger 50.
The grain drying tank a
Even if the pile height of the grains piled up on the floorboard 1 is increased by filling a large amount of grains inside, the drying air can be supplied from the air guide path b below the floorboard 1 without any problem. As a result, restrictions on the amount of filling due to restrictions on the stacking height can be resolved. Moreover, the upward flow of grains generated by the vertical auger 50 generates a downward flow of grains outside the upward flow, thereby generating a vertical circulation flow around the vertical auger 50. Therefore, the above-mentioned local blow-through of the drying air in the upper and lower directions is performed at the same time as the operation of switching the grains in the grain layer up and down, so that uniform drying of the entire grain layer is also achieved. You will be able to do it.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of the embodiment of the device of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a longitudinal sectional front view of the main parts of the same, Fig. 4 is a side view of the same, and Fig. 5 is an explanation of the operation. It is a diagram. Explanation of drawing symbols, a... Grain drying tank, 1... Floor plate, 2... Hole, 10... Machine frame, 11... Rolling wheel,
12...Dolly section, 50...Vertical auger, 60...
...Transfer device, 61...Spiral, 62...Motor,
63... Reduction mechanism, 64, 65... Limit switch, 66, 67... Operating rod, b... Air guide path, C
... Dry air supply device, Y ... Grain flow direction, Z
...The movement trajectory of the vertical auger in plan view.

Claims (1)

[Scope of utility model registration request] A drying air supply device C is installed over the entire lower part of the floor plate 1 of the grain drying tank a, which has a rectangular cross section and has an air permeable floor that blows drying air from below the floor plate 1 on which the grains are deposited. A communicating air guide path b is installed, and a machine frame 10 that reciprocates back and forth on the ceiling of the grain drying tank a is installed across the ceiling in the left-right direction,
The machine frame 10 is equipped with a vertical auger that vertically enters the grain layer deposited in the grain drying tank a and transports the grains in the vertical direction. A corner that is set to face upward and is provided with a vertically movable support along the longitudinal direction of the machine frame, and is equipped with a transfer device that moves the vertical auger back and forth along the longitudinal direction. A cylindrical grain drying device.