JPS608309Y2 - Ceiling device in grain drying equipment - Google Patents

Description

[Detailed description of the invention] The purpose of this invention is to improve the drying efficiency of grain drying equipment by stabilizing the flow velocity of grains through pneumatic transport and promoting uniform diffusion and fall into the grain storage root surface. A ventilation drying path 3 for the grains 2 is provided at the lower part of the grain storage frame 1.
, 3, and has a grain air transportation path 4 extending from the bottom to the ceiling, an upper end opening 4' of the transportation path 4 is opened in one side wall, and an air suction blower facing the opening 4' is provided. -5 is provided on the other side wall to circulate and dry the loaded grains 2 from the bottom to the ceiling. Parallel ventilation guide plates 6, 6 are provided on the ceiling 7, extending from one side wall to the other side wall and perpendicular to both side walls, and at the bottom of the guide plates 6, 6, from one side wall to the middle of the above guide plates 6, 6. A slat 8 is provided to form an air passage 9, and a grain scattering prevention plate 10 is installed between the guide plates 6 and 6 in front of the blower 5, and a grain scattering prevention plate 10 is installed between the slat 8 and the ceiling 7. This invention relates to a ceiling device in the above-mentioned root surface 1 grain drying device, which is provided with an air volume distribution guide plate 11 therebetween.

The drainboard 8 is constructed by arranging barb-shaped rods parallel to the guide plates 6, 6 with a certain gap between the guide plates 6, 6, and as shown in FIG. space t between
Alternatively, it can be brought into contact with the scattering prevention plate 10 as shown in FIG.

In addition, what is indicated by 4" in the figure is the lower end opening of the air transport path 4, and 1
2 is a rotary blade for hoisting grains above the opening 4'', 13
14 is a rotary valve provided at the lower end of the ventilation drying passages 3, 3; 15 is a Yajirobe type opening/closing valve provided at the upper end of the drying passages 3, 3; 16 is a screw conveyor provided at the bottom;
17 is a hot air generator; 17 is a hot air outlet; 18 and 18' are perforated plates or meshes forming the ventilation drying passages 3, 3; and 19 is a grain discharge thrower by the high speed rotation of the rotary blades 12.

Therefore, when the air suction blower 5, the hot air generator 16, the screw conveyor 13, the rotary valve 14, 14, and the rotary blade 12 (rotating at low speed) are started, the turf grain 2 descends through the aeration drying passages 3, 3, and is exposed to hot air. The grains are passed through a screw conveyor 13, fried by low-speed rotary blades 12 to above the lower end opening 4'', supplied to the air flow rising through the transport path 4 by the blower 5, and transported by air by the upward flow. At the same time, airflow drying is performed.

The grains thus air-transported enter the air passage 9 through the upper end opening 4' and move toward the reblower 5, and are also spread laterally within the air passage 9, passing through the grates 8 onto the slatted grains 2. At the same time, the scattered grains fall in a diffused state and form the upper surface of the flattened grains 2, and the scattered grains collide with the prevention plate 10 and descend, passing over the prevention plate 10 and being discharged to the outside from the blower 5. Never.

In conventional drying devices (described in JP-A-54-8087R and JP-A-54-91466), the upper end opening 4'
Since the cross-sectional area of the opening 4' is small and the cross-sectional area of the upper part of the cross-piece 1 is large, and there is no air passage, the air sucked into the cross-piece surface 1 flows into the grain air transport path 4 and inside the cross-piece surface 1. Since the flow rate of the grains tends to change easily and it is difficult to stabilize the flow rate of the grains, it was necessary to increase the power of the suction blower 5. Moreover, due to the increased power, the blower 5 scatters the grains that should fall and suctions them. There was a risk that it would be discharged from blower 5 into and outside the aircraft.

This proposal was made in view of the above-mentioned defects, and since the present proposal is constructed as described above, an air passage 9 is formed from the upper end opening 4' toward the air suction blower 5, and the air passage 9 has a large cross-sectional area. A blockage state can be formed with the upper space of the crosspiece 1 to reduce the cross-sectional area of the air sucked by the blower 5.
It is possible to improve the suction power of the air, and also to prevent a decrease in the flow velocity of the suction air and a change in the flow velocity within the grain air transport area, which not only makes it possible to downsize the suction blower 5 and prevent power loss, but also to reduce the The grains moving in the passageway 9 can be evenly and evenly spread within the same air passageway 9, and in this state can be allowed to fall into the crosspiece surface 1, so that the grains can be spread uniformly within the crosspiece surface 1. There is a practical benefit of improving drying efficiency, and moreover, the grains scattered at the front part of the suction blower 5 are transferred from the air t formed between the terminal end of the drainboard 8 and the grain scattering prevention plate 10 into the crosspiece surface 1. The grains can be dropped reliably and smoothly, and the grains can be prevented from being ejected into or out of the machine.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing a grain drying device equipped with the ceiling device of the present invention, Figure 2 is a vertical side view of the same device, and Figure 3 is Figure 2A.
4 is a ceiling view taken along line B-B in FIG. 3, and FIG. 5 is a partial side view of the other side of FIG. 2. 1. Grain storage rack surface, 2. Grain loading, 3. Ventilation drying path, 4. Grain air transport path, 5. Air suction blower 1
4'... Upper end opening, 6... Parallel ventilation guide plate, 7... Ceiling, 8... Slats, 9... Air path, 10... Grain scattering prevention plate, 11... Air volume distribution guide plate.

Claims (2)

[Scope of utility model registration request] (1) At the bottom of the grain storage frame 1, there are ventilation drying paths 3, 3 for the loaded grains 2, and a grain air transport path 4 extending from the bottom to the ceiling.
The upper end opening 4' of the transport path 4 is opened on one side wall, and the air suction blower 5 facing the opening 4' is provided on the other side wall to move the mulch grains 2 from the bottom to the ceiling. In the apparatus for drying the air by circulating air into the air, a parallel ventilation guide is provided between the upper end opening 4' of the air transport path 4 and the suction blower 5, extending from one side wall to the other side wall and perpendicular to both walls. Boards 6, 6 are provided on the ceiling 7, and a grating 8 is provided at the bottom of the guide boards 6, 6 from one side wall to the middle of the guide boards 6, 6 to form an air passage 9. - Ceiling in a grain drying device comprising a grain scattering prevention plate 10 installed between the guide plates 6 and 6 in the front part of the grain dryer, and an air volume distribution guide plate 11 provided between the grates 8 and the ceiling 7. Device. (2) The ceiling device according to claim 1, wherein the gridiron 8 is formed by aligning wedge-shaped rods parallel to the guide plates 6, 6 with a certain gap in between.