JPH0470056B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a ventilation device for drying or cooling grains, and more specifically to a mobile ventilation device for drying or cooling harvested grains while they are stacked in bulk on a truck. Regarding equipment.

Prior Art and Problems Conventional grain ventilation facilities, as shown in Figure 8, have a receiving device, a weighing device, a raw material bin (storage device),
It is a fixed facility equipped with ventilation equipment for drying or cooling.

In the case of such fixed grain ventilation facilities, if there is an imbalance between the yield of the combine harvester in the field and the processing capacity of the ventilation facility, grains may be left in bulk for a long time on the truck that transports them from the field to the ventilation facility. It remains deposited. That is, conventionally, the cargo receiving time until a grain transport truck starts loading grain into a ventilation facility may take as short as 1 to 2 hours, and as long as 6 to 8 hours. In particular, when rainy weather is expected, harvesting in the field is forced to be rushed (the reason for rushing the harvest is that if the field encounters rain, germination will occur and the product will not turn into a product), which will exceed the processing capacity of the ventilation facility. The amount of grain harvested is sometimes transported. Grain that has exceeded the processing capacity of the ventilation facility will be piled up in bulk on a grain transport truck, waiting for its turn to be processed. It breeds and causes stuffiness and unpleasant odors. Experience has shown that if grains are piled up in bulk for more than 2 hours, it can become dangerous, especially if grains have a high moisture content of 35% or more.
There is a case where the amylogram decreased by 30% over time.

In view of the above-mentioned problems of the prior art, the inventor of the present invention believes that the time for which harvested grains are piled up in bulk on trucks should be shortened as much as possible, or in relation to the processing capacity of ventilation facilities. The present invention was developed based on the knowledge that if it is difficult to shorten the cargo reception time of a transport truck, it is necessary to suppress the rise in grain temperature of grains piled in bulk on the truck by some means. It was completed.

The present invention has been made based on the above knowledge, and when the receiving time of a grain transportation truck cannot be shortened due to the processing capacity of the ventilation facility, the grain temperature of grains piled in bulk on the truck can be reduced. The purpose of the present invention is to provide a simple and useful ventilation device for bulk grains that can suppress or dry the grains.

Means for Solving the Problems The means taken by the present invention to achieve the above object is to provide a ventilation screen at the height of the legs on the tilting loading platform of a truck, and to install a ventilation duct for a ventilation generating means on the ventilation screen. It is said that it was erected.

Function When the ventilation duct is ventilated by the forced draft generation means or the suction draft generation means, in the case of the forced draft generation means, the air passes through the ventilation screen upward through the grain pile layer, is ventilated, and is suctioned. In the case of the draft generating means, air is passed down through the grain stack and into the ventilation screen.

Example This will be explained with reference to the drawings.

The truck T has a well-known configuration having a loading platform that opens on one side or a loading platform that opens on three sides and is provided with a flap t' around the loading platform t, and a ventilation screen 1 is arranged on the loading platform t.

Some examples of the ventilation screen 1, ventilation generating means, ventilation means, etc. are explained in Figs. 1 and 2.
3 shows a first example of the ventilation screen 1,
Further, FIGS. 1 and 2 show a first example of the ventilation generating means and the ventilation means, and FIG. 6 shows the second example of the ventilation means.
For example, FIG. 7 shows a third example of the screen. A first example of the ventilation screen 1, which has a leg height 1'' made of a perforated corrugated plate fixed to the back surface of a perforated plate 1', and has an area and shape that allows multiple units to be placed on a loading platform t. This is an example in which the ventilation screen 1 is arranged on the front side and the rear side of the loading platform t.
consists of a perforated plate 1' with blocking plates 1'' vertically disposed on three side edges to surround the legs 1'' from three sides, and a ventilation screen 1 disposed in the middle of the loading platform t. It is constructed by vertically disposing a closing plate 1 on two opposite side edges. In addition, a ventilation duct 2 is installed upright on the ventilation screen 1 arranged on the front side of the loading platform T, and this duct can be placed immediately behind the driver's cab of the truck T, and a fan connected to the upper end opening of the ventilation dust 2 is installed. 3 can be installed on the operator's cab, and the first ventilation means
Configure to configure the example. Ventilation screen 1
When placing the
A ventilation screen 1 with an erected structure is placed at the rear of the driver's cab, and the open side surface without the blocking plate 1 is placed toward the rear of the loading platform t, and then one or more vehicles are placed in the middle of the loading platform t. The above-mentioned ventilation screen 1 is arranged with both open sides without the blocking plate 1 facing the front and rear sides of the loading platform t, and finally the ventilation screen 1 arranged on the rear side of the loading platform t is placed on the opening side without the blocking plate 1. are arranged toward the front side of the loading platform t, and furthermore, sealing members 5 are arranged at the connecting portions of each ventilation screen 1 and laid out. All of the plurality of ventilation screens 1, 1... laid out as described above communicate with each other from the front side to the rear side of the perforated plate 1' on the side where the legs are provided.
The side where the leg portions are provided also communicates with the ventilation duct 2, and by supplying ventilation to this duct, all the ventilation screens 1, 1, . . . are ventilated at the same time. Therefore, the perforated plate 1' of the ventilation screen 1 is constructed by opening an appropriate number of ventilation holes 4 small enough to prevent grains (for example, wheat) from falling onto the loading platform t, and fixed to the surface of the perforated plate 1'. The leg portion 1'' has a diameter larger than the ventilation hole 4 of the perforated plate 1' or a ventilation hole 6 having the same diameter as the ventilation hole.
perforated in a corrugated plate, and the top of the corrugated plate is fixed to the back surface of the perforated plate 1' to form each ventilation screen 1, 1.
... constitutes. The ventilation duct 2 is for configuring a first example of ventilation means, and is installed upright on the ventilation screen 1 disposed on the front side of the loading platform T, and a fan 3 installed on the driver's cab of the truck T is connected to the opening at the upper end. The ventilation screen 1 can be ventilated by driving the fan with a motor 7. The fan 3 shown in the first and second figures is a first example of ventilation generating means, and is a fan for blowing or suctioning air, and is installed together with a motor 7 on the cab of the truck T, and is driven by the motor. In this case, air is forced into the ventilation duct 2 or air is sucked from the ventilation duct 2 and ventilated through the ventilation screen 1 to constitute a first example of the ventilation generating means, and a rose is placed on the ventilation screen 1 of the loading platform t. The piled grain layer is ventilated to suppress the rise in grain temperature.

Next, using the first example of the ventilation screen 1 and the ventilation duct 2 described above, and using the fixed grain ventilation facility 8 shown in FIG. A second example of the ventilation generating means for drying and a second example of the ventilation means will be explained with reference to FIGS. 4 and 5.

A second example of the ventilation generating means is a hot air generating furnace b consisting of a burner on a tower 9 built separately from the ventilation facility near the fixed grain ventilation facility 8, a blowing fan 3 for the hot air generating furnace, The fan motor 7 and the like are installed, and the ventilation means is provided with a long ventilation duct 10 whose tip is closed at the ventilation opening of the ventilation fan 3, and the ventilation duct is arranged at certain intervals in the longitudinal direction. A large number of communication ducts 11 are arranged in the duct, and the intake port side of the ventilation duct 2 is connected to the air outlet of the communication ducts.
It is possible to simultaneously ventilate the ventilation screens 1 of the same number of trucks T as 1. In such ventilation generating means and ventilation means, the ventilation fan 3 is operated, hot air is generated in the hot air generation furnace b, and the hot air is transferred by the ventilation fan 3 to the ventilation duct 10 → the communication duct 11 → the ventilation duct 2 in this order. If you push it, the loading platform T
Air can pass through the grain pile layer from all the upper ventilation screens 1, 1, . . . and dry the grains. Furthermore, if the hot air generating furnace b is not used and only the ventilation fan 3 is operated, air can be passed through the grain accumulation layer above the ventilation screens 1, 1, etc., and the rise in grain temperature can be suppressed as in the first example. obtain. Therefore, the second example of the ventilation generating means and the ventilation means are such that when the receiving time of the grain transportation truck cannot be shortened due to the processing capacity of the fixed ventilation facility 8 for grains, the ventilation screen 1 of the truck T is used to transport the grains. , 1... Suitable for use in suppressing a rise in grain temperature or drying grains while being piled up on top. Therefore, if the hot air generating furnace b is not installed and a suction fan is installed in place of the blowing fan 3 for operation, then the outside of the grain pile layer → the inside of the pile layer → the ventilation screen 1 → the ventilation duct 2 → the communication duct 11→Blower duct 10→Suction fan→Exhaust air can be generated in this order, thereby suppressing the rise in grain temperature of grains.

The second example of the ventilation screen 1 is different from the first example in that the leg height is increased by using legs 1 made of pillars instead of the legs 1 made of perforated corrugated plates of the first example, as shown in FIG. This is what we have configured. The leg portions 1 made of the pillars are fixed at one end to the back surface of the perforated plate at regular intervals. The other configurations of the ventilation screen 1 itself, the configuration in which it is spread over the loading platform t of the truck T, the configuration related to the ventilation duct 2, etc. are the same as those in the first example, and will therefore be explained repeatedly.

The structure of the third example of the ventilation screen 1 is different from the first and second examples in that the leg portion 1'' is made of cross-stacked square timbers to have a high leg height, as shown in FIG.
The closure plate 1 should not be placed vertically on the side edge of the perforated plate. However, it is preferable that the closing plate 1 is vertically installed as in the first example. This ventilation screen 1 is
Since there is no blocking plate, the ventilation effect may be reduced somewhat, but if you place a ventilation duct (not shown) on the front side when laying it on the loading platform of the truck T, it will be easier. can be arranged in any order, making the arrangement work efficient. When disposing them on the loading platform t, a sealing member (not shown) is interposed at the connecting portion as in the first example.

Each of the ventilation screens 1 described above is an example in which a plurality of ventilation screens 1 are arranged on the loading platform t of a truck T, but the invention is not limited to this, and may be used in cases where the loading platform t of the truck T is narrow, etc. teeth,
One ventilation screen 1 configured to have a size and shape suitable for the cargo bed may be provided for each truck.

Effects of the Invention Since the present invention is constructed as described above, if the forced ventilation generating means or the suction draft generating means is used to ventilate the ventilation duct, in the case of the forced ventilation generating means, the air is removed from the ventilation screen. Air can pass upwardly through the grain pile and in the case of suction draft generating means, air can pass downwardly through the grain pile to a ventilation screen. Therefore, the harvested grains can be ventilated while being piled up in bulk on the truck, which is convenient for suppressing the rise in grain temperature of the grains or drying the grains.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a first example of the ventilation device of the present invention, Fig. 2 is a longitudinal sectional front view thereof, Fig. 3 is a partially enlarged longitudinal sectional front view of the ventilation screen, and Fig. 4 is a schematic diagram of the second example. 5 is a partially enlarged perspective view thereof, FIG. 6 is a partially vertical perspective view of the ventilation screen, FIG. 7 is a partially vertical perspective view of the ventilation screen,
FIG. 8 is an explanatory diagram of the prior art. In the figure, T...truck, t...loading platform, t'...gateway, 1...ventilation screen, 2...ventilation duct.

Claims (1)

[Claims] 1. A ventilation system for grains loaded in bulk on a truck, in which a leg-high ventilation screen is arranged on the tilting loading platform of the truck, and a ventilation duct for a ventilation generating means is erected on the ventilation screen.