JPS63326B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a thrower that is installed in, for example, a grain dryer and is used for hoisting dried grain to a storage tank at an elevated location.

[Conventional technology]

Conventionally, this type of thrower has a flat blade fixed to the tip of a narrow arm extending radially.

[Problems to be solved by the invention]

In the above-mentioned thrower, since the blade surface is flat, the acceleration in this part is too large and a large impact force is applied to the grain, easily damaging and deteriorating the grain, and the capture and release of the grain is insufficient and ineffective. There is a problem in that it is low. Attempts have been made to attach cushioning material to the blade surface in order to reduce the degree of impact, but it is difficult to select a material with excellent wear resistance and a smooth surface suitable for scooping up and discharging. The problem remains that the shape of the blades, including the shape of the casing, is difficult to determine theoretically. Also,
Grain flowing in from the supply port is scattered by the arms and the like before reaching the blade surface, causing power loss and quality deterioration.

[Means to solve the problem]

The present invention has been made to solve these problems, and includes a plurality of mounting discs that integrally connect the blades to the rotating shaft, which are mounted radially inside a circular casing, and which are connected to the blades of the casing. A supply port is provided approximately at the center of one opposing side, and a discharge port is provided above the circumferential portion, and the blade is configured such that the base end side of the blade is bulged and curved in the direction of rotation with respect to the rotation axis. The tip side of the blade is bulged and curved in the counter-rotation direction with respect to the shaft to form a continuous S-shape in side view, and the tip is provided with means for scooping grain and holding a predetermined amount of grain. It is characterized by the fact that

[Effect]

With the above configuration, the specially shaped blade efficiently captures the grain fed from the feed port, guides it to the tip side with minimal impact, and releases it in the tangential direction using centrifugal force and wind power, allowing the grain to be fried. Efficiency can be improved and damage to grains can be reduced.

[Embodiment] Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings. In FIGS. 1 to 3,
Reference numeral 1 denotes a circular casing, and a rotating shaft 2 is rotatably supported and inserted into the center of the interior of the casing 1 by a bearing 4 of a support arm 3, and a mounting disk 5 is integrally attached to the end of the rotating shaft 2. For example, three blades 6 are attached radially to one side of the mounting disk 5. Further, a supply port 7 is opened at the center portion of the side portion 1a of the casing 1 opposite to the blade 6, where the rotating shaft 2 is inserted, and a discharge port 8 is opened above the circumferential portion 1b. An air suction port 10 having a perforated plate 9 is provided on a side portion 1c on the back side of the mounting disk opposite to the side portion 1a. The blade 6 is mounted perpendicularly to the mounting disc 5, and as detailed in FIGS. 3a and 3b, the base end 6a side of the blade 6 is in the rotation direction (arrow R) with respect to the rotation axis 2. It bulges out and curves toward the feed port 7 to capture the grains supplied from the supply port 7, and transports them quickly radially outward with less resistance. In order to make the flow smooth, the width is widened from the inside to the outside. On the other hand, the tip 6b side of the blade 6 conversely bulges and curves in the counter-rotational direction with respect to the rotating shaft 2, so as to accumulate a certain amount of grain and reduce the conveyance speed to the outside in the radial direction. The base end 6a and the distal end 6b form a continuous S-shape in side view. Further, a guide 11 for holding a predetermined amount of grain is integrally erected on the edge of the tip 6b opposite to the mounting disk 5, with the tip raised. and at the tip of the guide 11,
A scooping piece 12 is mounted in a height-adjustable manner by a fastener 13, and the scooping piece 12 is inclined in the direction of an angle suitable for scooping and discharging the grain, and its tip and the inner surface of the casing 1 are connected to each other. The distance between the two is set to an appropriate value of about 4 mm, for example. Furthermore, the base end 6a of the blade 6 of the mounting disk 5
A communication hole 15 is opened behind the. In addition, a reinforcing plate 16 is attached to the opposite side of the mounting disc 5 from the blade 6, and a cut-and-raised part 17 for wind raising is provided at a location of this reinforcing plate 16 that coincides with the communication hole 15, and a A large amount of air is introduced through the communication hole 15 by the pressure and the cut and raised portion 17. Since the present invention is configured in this way, the blade 6 is rotated by the rotating shaft 2 together with the mounting disk 5, etc.
When grains are appropriately supplied into the casing 1 from the supply port 7 by a conveying device, the grains are transferred to the blades 6
The supply port 7 is captured by the inner proximal end 6a, and due to its shape, it is rapidly conveyed toward the radially outer distal end 6b. And the tip part 6b
Due to the shape of the guide 11, the conveying speed of the grain is reduced due to the concave shape, and instead of colliding violently with the rake piece 12, more of the grain accumulates at the tip of the guide 11. The grains that have fallen to the bottom and been scooped up by the rake piece 12 are discharged from the discharge port 8 to a high place by the rotational force of the blade 6 and the wind force of the air introduced from the air suction port 10 through the communication hole 15. It is lifted up. Next, as an example of a method for manufacturing the blade 6 without using complicated welding or jigs, it will be explained with reference to FIG. The support portion 6c is formed continuously, and one end of the support portion 6c is grooved into a V-shape. Then, the part indicated by the broken line A is bent, and the groove part 6e is spot welded to the end of the tip part 6b as shown in b to integrally connect the support part 6c.Thereby, the support part 6c has high dimensional accuracy and strength. It will be able to withstand grain pressure. In addition, as shown in FIG. 5, two blades 6
If they are combined point-symmetrically and cut along the broken line B, two pieces can be molded at the same time using one drawing die, which is suitable for mass production.

【Effect of the invention】

As described above, according to the present invention, almost all of the grains supplied into the casing 1 from the supply port 7 are captured by the blades 6, so that the height at which the grains can be fried and the amount of grain to be conveyed are increased, and the work efficiency is improved. Further, since the grain is not subjected to large impact due to speed control when being conveyed along the blades 6, damage to the grain is reduced. Furthermore, the mounting disc 5 does not have unnecessary protrusions and the supply port 7
without interfering with the flow of grain supplied from
In addition, the capture of the grains by the blades 6 is promoted, and the grains do not move erratically such as colliding with internal protrusions and scattering, thereby reducing power loss and
Grain damage and deterioration are significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of one embodiment of the thrower according to the present invention, FIG. 2 is a sectional view taken along the line - in FIG. 1,
Figures 3a and b are side views and front views of the blade part, Figures 4a and b are side views showing the manufacturing process of an example of the blade manufacturing method, and Figure 5 is a perspective view showing an example of the molding process. It is a diagram. DESCRIPTION OF SYMBOLS 1... Casing, 2... Rotating shaft, 5... Mounting disk, 6... Vane, 6a... Base end, 6b... Tip, 7... Supply port, 8... Discharge port, 11... ...Guide, 12...Rake piece.

Claims (1)

[Scope of Claims] 1. A plurality of mounting discs that integrally connect the blades to the rotating shaft are mounted radially inside a circular casing, and a supply port is provided approximately at the center of one side of the casing facing the blades. The blade is provided with a discharge port above the circumference, and the blade has a proximal end thereof bulging and curved in the direction of rotation with respect to the rotation axis, and a distal end side of the blade with respect to the rotation axis. A thrower characterized in that it is bulged and curved in the direction of rotation to form a continuous S-shape when viewed from the side, and is provided with a means for scooping up and holding a predetermined amount of grain at its tip.