JPS58100011A - Grain conveyor - Google Patents

Abstract

PURPOSE:To facilitate the manufacturing of a grain conveyor of spiral blade type for a grain drier, by making uniform the outside diameter of a grain conveying blade between the front and rear ends and spirally winding the blade around a rotary shaft so that the pitch of the spiral gradually increases with a constant gradient. CONSTITUTION:The outside diameter of a grain conveying blade 51 is made nearly uniform between the front and rear ends in the direction of conveyance. The pitch of the spiral of the blade 51 is gradually increased with an almost constant gradient. As a result, the grain conveyance capability of the blade 51 is gradually enhanced toward the rear end in the direction of conveyance. Since the grain conveying blade 51 is simply fitted to make the outside diameter uniform and gradually increase the pitch, the manufacturing of a grain conveyor is facilitated.

Description

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

In the above-mentioned grain feeding device, which is constructed by spirally wrapping the grain feeding device around the circumferential surface of a rotating shaft, the spiral grain feeding device is normally placed in the inner cavity of a conveying gutter whose top side is open. A rotary shutter or a rotary valve is installed above the conveyance gutter to control the amount of grains falling into the conveyance gutter. Since the amount of grain is squeezed to the extent that it fills approximately the lower half of the grain feeding tool, the grains that flow down from the upper open port of the conveying gutter over approximately the entire width of the conveying gutter in the conveying direction. The spiral grain feeder can transport grain without any problems, but for example, if a long split-shaped discharge port is provided at the bottom of the grain tank of a grain dryer and an open port at the top of the conveyance gutter, A spiral grain feeding blade is installed in the conveying gutter so that its axis of rotation runs along the longitudinal direction of the conveying gutter, and the grain is fed from the outlet of the grain tank into the conveying gutter. When used to send out grains that flow down and are packed in the conveying gutter, the grains are inserted between the pitches of the spiral grain feeding blades at the starting end side of the spiral grain feeding blades in the conveying direction. Since the grains filling the gap between the pitches are sent out as they are to the terminal end side, the grains flow into the conveying gutter only at the starting end side, and the entire width of the spiral grain feeding blade in the longitudinal direction is The grains are not received uniformly, and the state of grain discharge from the outlet of the grain tank becomes unbalanced.

Therefore, when the spiral grain feeding blade is used in a state where it is buried in the grain, it is necessary to gradually increase the grain feeding capacity of the spiral grain feeding blade toward the terminal end in the conveying direction. Therefore, in the past, a large number of short grain feeding blades were formed with different spiral pitches, and these blades were successively connected to each other.

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 feeding blade is wound around a rotating shaft, and the spiral grain feeding blade is wound around the rotating shaft. They are formed so that they have approximately the same diameter and are continuous from the start end side to the end end side in the transport direction of the device, and the pitch thereof gradually increases at a substantially constant slope from the start end side to the end end side in the transport direction. Wrapping is characterized by being worn.

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

FIG. 1 shows a grain dryer A in which the present invention can be carried out, tl
l is the fuselage formed into a square box shape with the four circumferential machine walls (IT)...and the bottom plate OI) and the top plate Q2+, and (2) is the grain tank installed in the inner cavity of the fuselage (1). , the bottom of it is connected to the bottom of the inner cavity of the fuselage (1) from the inner surface of the left and right walls 0υ of the fuselage flJ toward the left and right center of the fuselage (1). is formed into a hopper shape by the left and right inclined floor plates ■φ (2), which are made of air permeable bulkheads installed on shelves so as to slope downward, and the inclined descending edges of the left and right inclined floor plates ■ and (1) Anteroposterior direction (first
A cleavage-shaped discharge port CD is formed along the horizontal direction (in the figure).

(3) is arranged below the discharge port (21+) and
) is a conveyance gutter that is hung horizontally along the front-rear direction (horizontal direction in Figure 1) of the body (1) at the bottom of the inner cavity of the body (1), and is formed in the shape of a channel with an open top side. side wall■
- (to) are connected to the left and right edges of the discharge port CD, and the front end (the left end in Figure 1) protrudes toward the front side of the fuselage (1). The grain lifting tower (4) of the elevator (4) (packet elevator) installed upright on the front side of the
It is connected to the bottom of ■.

(5) is installed in the inner cavity of the conveying gutter (3). 7 Grain feeding device (
auger), and a spiral grain feeding blade 5 on the surface of the rotation axis r50).
It is the same as the previous one in that it is configured by attaching winding D, but the spiral grain feeding blade 6υ, which is attached to the rotating shaft ■, is attached to the grain feeding device (5). ) is formed so that the outer diameter is approximately the same from the starting end side to the terminal end in the conveying direction, and the pitch of the spiral with respect to the rotating shaft 50) is from the starting end side to the terminal end in the conveying direction. The wrapping is installed so that it gradually increases in size with a substantially constant slope toward the side, and thereby the grain feeding device (5)
The grain feeding capacity at each portion from the starting end to the terminal end gradually increases from the starting end side to the terminal end side.

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 wall σ01 on the front side of the machine body (1). The grain lifting tower (4G) of the elevator (4) installed upright in front of the elevator (4G) is connected to the ejection tube (4υ) installed at the upper end of the elevator (4) through shutters (4) that open and close. The grains released from the packet conveyor (44) in the grain lifting tower (40) are fed into the grain tank (2) from this input Oa. ) 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).
) is installed along the front-rear direction in a part near the bottom of the inner cavity of the fuselage (1), and one end of the hot-air generator (6) is installed in the duct installed at the front of the aircraft (1). It is connected to the air outlet 0 of the aircraft (Fig. 3).In addition, the air force is connected to the air outlet 0 of the aircraft ( 1) Connected to the suction port σ of the exhaust fan συ installed on the duct installed on the rear side.

Next, to explain the function and effect, in the grain feeding device according to the present invention configured as described above, the grain feeding capacity of the spiral grain feeding blade 6υ, which is wound around and attached to the surface of the rotating shaft 50, is increased to the terminal end side in the conveying direction. When configuring the spiral grain feeding blade (5I) to be wound around the rotating shaft (50) so as to increase in size sequentially in the direction, the outer diameter of the spiral grain feeding blade (5I) that is attached to the rotating shaft (50) is As shown in the figure, the spirals are formed to have approximately the same diameter, and are set so that the pitch of the spiral gradually increases at an approximately constant slope from the starting end to the terminal end in the conveying direction. Wrapping consists of attaching it.
The grain feeding blade 6υ can be easily formed, and when it is wound around the rotary shaft mark, it can be wound according to a pitch that changes at a predetermined slope, making manufacturing easier.

[Brief explanation of drawings]

FIG. 1 is a vertical side view of a grain dryer embodying the present invention, FIG. 2 is a vertical front view of the same, and FIG. 3 is a cross-sectional plan view of the same. Explanation of drawing symbols A...Grain dryer a...Grain input port 1...
・Airframe 10... Machine wall 11... Bottom plate 12
...Top plate 2...Grain tank Addition...Slanted floor plate 21...Discharge port '3...Transportation trough Seki...Side wall 4...Elevator 40...Grain lifting tower 41...・Discharge tube 42...Shutter 43...Packet conveyor 44...Packet 5...Grain feeding device (
Auger) Seki... Rotating shaft 51... Grain feeding blade 6... Air guiding path 60... Partition wall 61... Duct 62... Hot air generation device 63... Air blowing lower...
...Exhaust channel 70...Duct 71...Exhaust fan 72...Suction port Agent Patent attorney Shinseki Kazubu Department Part 2 Question 12 Figure 3

Claims (1)

[Claims] In a grain feeding device in which a spiral grain feeding tool is wound around and attached to a surface of a rotating shaft, the spiral grain feeding tool is wound around the rotating shaft,
They are formed so that they have approximately the same diameter and are continuous from the start end side to the end end side in the transport direction of the device, and the pitch thereof gradually increases at a substantially constant slope from the start end side to the end end side in the transport direction. A grain feeding device characterized by the fact that it is equipped with wrapping.