JPS5917412A - Grain conveyor - Google Patents

Abstract

PURPOSE:To enable the uniform inflow of grain, by gradually decreasing the diameter of a rotary shaft toward the downstream end of the direction of conveyance and gradually enlarging the effective grain conveying surface of a spiral grain conveying blade wound around the rotary shaft, toward the downstream end of the direction of conveyance. CONSTITUTION:In a grain conveyor, a spiral grain conveying blade 51 is wound around a rotary shaft 50. The diameter of the shaft 50 is gradually decreased toward the downstream end of the direction of conveyance. The effective grain conveying surface of the blade 51 is gradually enlarged toward the downstream end of the direction of conveyance. As a result, grain flows in almost uniformly to the respective portions of the spiral grain conveying blade 51. Since the spiral blade 51 can be mounted at a nearly constant pitch on the peripheral surface of the rotary shaft 50, the manufacturing of the conveyor is much facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a grain feeding device which is constructed by spirally winding grain feeding blades around the circumferential surface of a rotating shaft and is mainly used for carrying out grain in a grain drying device. It is.

In the above-mentioned grain feeding device, which is constructed by spirally wrapping grain feeding blades around the circumferential surface of a rotating shaft, the spiral grain feeding blade is usually mounted in the inner cavity of a conveying gutter, and the grain is fed into the conveying gutter. When the amount of grain is controlled to the extent that it fills the lower half of the spiral grain feeding blade, the grains that flow down from the upper opening of the feeding gutter,
The spiral grain feeding blade performs a substantially uniform grain feeding action over the entire width in the longitudinal direction. J? lx [A conveying gutter is provided below the elongated slit-shaped discharge port so that its upper open port is connected to the discharge port, and a spiral grain feeding blade is installed in the conveying gutter so that its rotation axis is connected to the conveying gutter. When installed along the longitudinal direction and used to send out the grains that flow down from the outlet of the grain tank into the conveying gutter and are packed in the conveying gutter, a spiral grain feeder is used. The grains that enter the pitches of the spiral grain feeder on the starting end side in the conveying direction of the blade and fill the pitches are sent out as they are to the terminal end side, so that there are no grains in the conveying gutter only on the starting end side. As a result, grains are not uniformly received throughout the length of the spiral grain feeder, and the state of grain discharge from the outlet of the grain tank becomes unbalanced. .

Therefore, if the spiral grain feeder is to be protected while it is buried in the grain, the conveying capacity can be increased by gradually increasing the pitch of the spiral grain feeder toward the terminal end in the conveying direction. The number of grains gradually increases in the direction of conveyance, so that grains are received and conveyed almost equally over the entire width of the spiral grain feeder in the direction of conveyance.

However, this method has a problem in that it is extremely troublesome to manufacture. The present invention aims to provide a new means to solve this problem.

The means of the present invention for achieving this object is a grain feeding device in which a spiral grain feeder is wound or attached to the surface of a rotating shaft. It is characterized in that it is formed so that the diameter becomes gradually smaller toward the terminal end side, and the effective grain feeding surface of the spiral grain feeder is gradually enlarged toward the terminal end side G in the conveying direction.

Next, embodiments will be described in detail with reference to the drawings.

FIG. 1 shows a grain drying/manipulating machine A in which the present invention can be carried out, (
1) is a fuselage formed into a square box shape with four circumferential A walls 00)-..., a bottom plate old) and a top plate (12), and (2) is installed in the inner cavity of the fuselage (1). In the grain vat, the bottom of it is
As shown in Figure 2, at the bottom of the internal cavity of the body (1), the direction is downwardly inclined from the inner surface of the left and right sides of the body (1) to the center of the left and right sides of the body (1). Left and right inclined floorboards (20) and (20
) is formed into a hopper shape, and the abutting inclined descending edges of the left and right inclined floor plates (20) and (20) create a split shape along the longitudinal direction of the fuselage (1) (horizontal direction in Fig. 1). A discharge port (21) is formed.

(3) is located below the discharge port (2I) and
) is a conveyance gutter that is horizontally hung over the bottom of the inner cavity of the aircraft (1) in the rearward direction (left and right directions in Figure 1). The upper ends of the left and right side chambers (30+ and (30) of An elevator (4) that protrudes to the side and is installed on the front side of the fuselage (1) (bucket elevator)
) is connected to the lower part of the grain lifting tower (40).

(5) is a grain feeding device (ocher) installed in the inner cavity of the conveying gutter (3), which has a spiral grain feeding device (50) on the circumferential surface of the rotating shaft (50).
1) The winding is the same as before, but the rotating shaft (5o)
As shown in FIG. 4, the rotating shaft is formed into a tapered shaft whose outer diameter gradually decreases in the conveying direction (direction from right to left in the figure). The spiral grain feeder (51) wrapped around the circumferential surface of (50) has a pitch of P
The windings are installed so that the outer diameters r are approximately the same and the outer diameters r are approximately the same, so that the effective grain feeding surface of the grain feeder (51) faces toward the terminal end in the conveying direction. It seems to be increasing gradually.

Next, FIG. 5 shows another embodiment. In this example G grain feeding device (5), when the outer diameter of the rotating shaft (50) is gradually reduced toward the terminal end in the conveying direction, the outer diameter is reduced in a stepwise manner. As an example, the pitch P and outer diameter r of the grain feeding blade (51) using the screw are shown in FIG.
As in the embodiment shown here, it is approximately constant.

Note that the means of the present invention may be combined with conventional means of making the pitch of the spiral grain feeding blade unequal or changing the outer diameter.

In the illustrated embodiment, a is an input port for inputting grain into the grain tank (2), which is formed in the upper part of the machine south no.+ on the front side of the machine body (1). The discharge machine (41j) is installed at the upper end of the grain lifting tower (40) of the elevator (4) installed in front of the elevator (1), and communicates with it via a shutter (42) that opens and closes. The grains released from the bucket (44) of the bucket conveyor (43) in the grain lifting tower (40) of 41 are fed into the grain tank (2) through this input port a. Also,(
6) is an air guide path that guides the drying air to be sent to the grains placed in the grain tank (2), and is formed into a cylindrical shape by an air permeable partition wall (60) and is connected to the grain tank (2). It is installed along the front and back direction in a part near the bottom of the inner cavity, and one end of it is attached to the fuselage (
1) is connected to an air outlet (63) of a hot air generating device (62) installed in a duct (61) provided on the front side of the hot air generator (62) (FIG. 3). In addition, (7) is an air exhaust passage installed on the lower side of the left and right inclined floor plates (2o) and (2o) formed by the above-mentioned breathable bulkheads, and a duct installed on the rear side of the fuselage (1). (It is connected to the suction port (72) of the exhaust fan (71) provided at 70j.

Next, to explain the function and effect, the grain feeding ability of the present invention configured as described above (this grain feeding device has a spiral grain feeding blade 61 which is wound around the surface of the rotating shaft (5o)) is improved. The rotating shaft (5o) is conveyed so that the grains flow approximately evenly into each part of the spiral grain feeding blade (51) so that the grains gradually increase in size toward the end of the spiral grain feeding blade (51). The grain feeding effective surface of the spiral grain feeding blade (5I) attached to the circumferential surface of the rotating shaft (5o) is formed so that the outer diameter decreases gradually in the direction of rotation. The rotation axis (50
) When the spiral grain feeding IE (511) is wound or attached to the circumferential surface of the grain feeder (511), the grain feeding blades (51) can be attached at a substantially constant pitch, which greatly facilitates manufacturing.

[Brief explanation of the drawing]

FIG. 1 is a vertical side view of a grain dryer in which the present invention can be implemented, FIG. 2 is a vertical front view of the same, and FIG. 3 is a cross-sectional plan view of the same.
FIG. 4 is a longitudinal sectional side view of the main parts of the same device as above, and FIG. 5 is a longitudinal sectional side view of the main parts of another embodiment. Explanation of drawing symbols A...Grain dryer a-Grain input port L...Machine body 10...Machine wall 11...Bottom plate 12/Top plate
2. Grain tank 20. Inclined floor plate 21.. Discharge port 3.. Conveyance gutter; U0. Side wall 4.. Elevator
40... Grain lifting tower 41... Discharging tube lI2... Shutter 43... Packet conveyor 44... Packet 5... Grain feeding device (ocher) 50 - Rotating shaft 51... Grain feeding blade P... Pitch
r... Outer diameter 6... Air guide path 60... Partition wall
61...Takt 62...Hot air generator 6
3. Lower wind discharge... Exhaust passage 70... Duct 7
1...Exhaust fan 72...Suction port Patent applicant Yamamoto Seisakusho Co., Ltd. Agent Patent attorney Shin Seki Kazu Department 2FJ 11 3 No. 3 Figure 99 4

Claims (1)

[Claims] In a grain feeding device in which a spiral grain feeding blade is wound around and attached to a circumferential surface of a rotating shaft, the rotating shaft is formed such that the diameter of the shaft becomes gradually smaller toward the terminal end in the conveying direction. A grain feeding device characterized in that the effective grain feeding surface of the spiral grain feeding blade is gradually enlarged toward the terminal end side in the conveying direction.