JPS5851185B2 - Dust removal device in grain dryer - Google Patents

Description

Detailed Description of the Invention A grain flow path C is formed by perforated plates and b on both sides of the bottom of the grain storage chamber a, and a hot air chamber d is adjacent to the inside center of the flow path C, and an exhaust chamber e is adjacent to the outside thereof. In the vertical suction type grain circulation dryer, the grains that gradually descend in the flow path C are dried by hot air from the hot air chamber d, and are discharged from the lower end of the flow path into the grain collecting room g at the base. The hot air containing moisture returns to the grain storage chamber a again through the grain lifting cylinders L installed in parallel with the grain storage chamber A, and the hot air containing moisture passes through the exhaust chamber e and is discharged outside the machine by the suction fan f installed on the back of the machine. Dust and broken rice mixed in with the grains may clog the perforated plate and reduce the suction power of the suction fan f, and dust and broken rice may leak into the hot air chamber d through the perforated plate and accumulate on the bottom plate. The problem is that this dust and other substances absorb moisture and corrode the bottom plate, or rot and emit a foul odor, making it extremely unsanitary.

The present invention solves this drawback by communicating the vicinity of the grain inlet of the grain lifting cylinder l connected to the grain collecting room g with the suction fan through a ventilation passage, thereby sucking out dust mixed in the grains. By discharging the air to the outside of the machine to prevent clogging of the perforated plate, and by communicating this ventilation path with the hot air chamber d via an on-off valve,
After drying is completed, the opening/closing valve is opened and the dust accumulated in the hot air chamber d is sucked out by a suction fan to clean the top of the bottom plate.

To explain the embodiment shown in the drawings, reference numeral 1 designates the bottom plate of the hot air chamber d, and on the back side of the bottom plate, both sides of a gutter-like plate are glued to form a ventilation passage 2.
A grain feeding spiral is installed horizontally at the bottom of the grain collecting room g provided below the hot air chamber d, and its terminal end is connected to the grain flow port 3 of the grain lifting cylinder l installed on the front side of the machine. And this inlet 3
The starting end of the ventilation passage 2 is communicated with.

Further, the end of the ventilation passage 2 communicates with a suction fan f attached to the machine wall on the back side of the hot air chamber d.

Thus, an on-off valve 4 communicating with the ventilation passage 2 is mounted at a suitable position on the bottom plate 1 so as to be able to rise and fall freely.

Reference numeral 5 designates the rotating shaft, and by operating the rotating shaft 5 from the outside of the machine body, the on-off valve 4 can be raised or lowered to any desired angle.

The lower bottom of the grain flow path C passes through the rotary valve V to the grain collecting room G.
The dried grains fall into the grain collecting room g, are sent to the grain flow port 3 to the grain lifting cylinder l by a grain feeding spiral, and return to the grain storage room a again.

However, when the grains pass through the inlet 3, the dust mixed with the grains flies up into the air, but in the present invention, this floating dust is constantly removed via the ventilation path 2 by the suction fan f during the drying operation. It is sucked up and discharged out of the machine along with the moisture-containing folding screen.

Further, when drying is completed, the on-off valve 4 is raised and opened, and the dust and broken rice that leaked from the perforated plate and fell onto the bottom plate 1 are sucked into the ventilation passage 2 by the suction fan f and discharged to the outside of the machine.

In this way, according to the present invention, the starting end of the ventilation passage 2 is communicated with the inlet 3 of the grain lifting cylinder 1, and the dust thrown up by the grains flowing into the grain lifting cylinder 1 from the grain collection room g is removed during the drying operation. Since the suction is removed throughout the process, clogging of the perforated plate can be prevented, and
The hot air chamber d and the ventilation passage 2 are communicated via the on-off valve 4, and when the drying is completed, the on-off valve 4 is opened to clean the dust etc. from the bottom plate 1.
It is hygienic and the bottom plate does not corrode.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view of an embodiment of the present invention, and FIG. 2 is a longitudinal sectional side view thereof. 1 is a bottom plate, 2 is a ventilation passage, 3 is a grain inlet, and 4 is an on-off valve.

Claims (1)

[Claims] 1 A grain flow path made of a perforated plate is formed at the bottom of the grain storage chamber, and a hot air chamber and an exhaust chamber are provided on the left and right sides of the flow path, respectively, and hot air from the hot air chamber is sucked by a suction fan connected to the exhaust chamber. The grains are discharged from the lower end of the grain flow path to the grain collection chamber at the base, and then returned to the grain storage chamber through a grain lifting cylinder installed in parallel to the machine body. A dust removal device in which the vicinity of the grain inlet of a grain lifting cylinder connected to a grain chamber is communicated with a suction fan through a ventilation passage, and the hot air chamber is communicated with this ventilation passage via an on-off valve.