JP3375417B2 - Vertical grain conveyor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical grain conveying machine for lifting grains introduced from the lower end side upward and discharging them from the upper end side to the outside of the machine.

[0002]

2. Description of the Related Art Conventionally, in order to sort grains into sized grains having a grain size equal to or larger than a predetermined grain size and scrap grains and deformed small grain grains having a grain size smaller than the predetermined grain size, the following description will be given. A vertical rotary grain sorter is used.

As shown in FIG. 5, a vertical rotary grain sorter 3
Reference numeral 0 is provided with a not-shown selection mesh body concentrically and rotatably arranged in the outer shell body 31 and a fried grain spiral body concentrically and rotatably arranged in the selection mesh body. By doing so, while transporting the grains supplied from the hopper 35 upward, the waste grains and the deformed small-diameter grains that have passed through the mesh of the sorting net body are discharged from the waste grain discharge port 33 provided on the lower side of the outer shell body 31. On the other hand, the sized particles that have been discharged to the outside of the machine and do not pass through the mesh of the screening net are stored in the storage tank 32 provided at the upper part of the outer shell, and the sized particles discharge port 34 is opened and discharged as necessary. It is configured to be able to perform work such as bag packing and weighing.

[0004]

However, in the above-mentioned conventional technique, the sized particles stored in the storage tank provided on the upper portion of the outer shell are discharged and dropped from the sized particle discharge port to be packed or weighed. Although the work can be performed easily, since the scrap particles and deformed small-diameter particles are discharged to the outside of the machine from the scrap particle discharge port provided in the lower part of the side wall of the outer shell, once stored in a container with a low height, etc. Every
It is necessary to carry out the work such as packing and weighing by hand. For this reason, it takes time and effort to perform these operations,
There is an unsolved problem that the operation of the vertical rotary grain sorter needs to be temporarily stopped when the container for storing the waste particles and the deformed small-diameter particles is filled with the waste particles and the deformed small-diameter particles.

The present invention has been made in view of the unsolved problems of the above-mentioned conventional techniques, and by mounting it on the above-mentioned conventional vertical rotary grain sorter, bagging of scrap grains and deformed small-diameter grains and It is an object of the present invention to realize a vertical grain conveyor that is devised so that operations such as weighing can be performed easily.

[0006]

To achieve the above object, according to the solution to ## vertical grain conveyor of the present invention, the octahedron cylindrical outer shell, provided at the lower side of the outer shell An inlet for introducing grains, a first outlet cylinder and a second outlet cylinder bifurcated from a discharge cylinder provided on the upper end side of the outer shell,
A switching shutter mechanism for alternately opening and closing the first outlet cylinder and the second outlet cylinder, a spiral shaft having spiral blades concentrically arranged inside the outer shell, and the spiral shaft. A rotation drive means for rotating the outer shell body, and an angle adjusting member having a variable lateral projection length is disposed on the upper end side of the outer shell body, and on the lower end side of the outer shell body. Is provided with a mounting member projecting in the same direction as the projecting direction of the angle adjusting member, and is configured to fix the angle adjusting member and the mounting member to the side wall of the vertical rotary grain sorter. It is what

[0007]

[0008]

By adjusting the outward protrusion length of the angle adjusting member, the vertical grain conveyor can be easily attached to the side wall of the vertical rotary grain sorter so that the inclination angle of the vertical grain conveyer becomes a predetermined angle. You can

Grains such as waste grains and deformed small-diameter grains introduced from the introduction cylinder provided at the lower end side are conveyed upward and branched from the discharge cylinder provided at the upper end side to the first exit cylinder and Since it is alternately discharged from the second outlet cylinder to the outside of the machine, the grain discharged from one of the first outlet cylinder and the second outlet cylinder is packed and weighed, and at the same time the other is discharged. Since the preparatory work can be performed, continuous operation can be performed without interrupting the operation of the vertical grain conveyor and the vertical rotary grain sorter.

[0010]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an embodiment of a vertical grain conveyor according to the present invention, and FIG. 2 is a partial cross-sectional side view showing a main portion in section.

The vertical grain conveyor 1 of this embodiment comprises a regular octahedron-shaped outer shell 2 and a spiral which is concentrically and rotatably disposed inside the outer shell 2 and distributed over substantially the entire length. Wings 18
And a motor 7 having an output shaft 7a which is a rotation driving means directly connected to the upper end portion of the spiral shaft 19, and by rotating the spiral blade 18 together with the spiral shaft 19 by the motor 7. , The grains such as waste grains and deformed small-diameter grains introduced from the introduction cylinder 3 provided on the lower end side of the outer shell 2 are conveyed upward, and from the discharge cylinder 4 provided on the upper end side of the outer shell 2. First outlet cylinder 5 and second outlet cylinder 6 that branch off
One of the two is selectively discharged to the outside of the aircraft, and the details thereof are configured as described below.

As shown in FIG. 4, a gap S is provided between the inner surface of the regular octahedron cylindrical outer shell 2 and the outer peripheral edge of the spiral blade 18. If the gap S is set to be approximately the same as the average grain size of the grains to be conveyed such as scrap grains and deformed small-diameter grains, the inside of each ridge angle 2a of the outer shell 2 and the outside of the spiral wing 18 are set. Since the gap with the peripheral edge is larger than the average particle size, this portion functions as a relief part for the grain, and damage or crushing of the grain is prevented. As a result, there is no occurrence of slippage or crushed grains in the conveyed grains.

When the outer shell 2 is formed into a regular octahedron cylinder as in the present embodiment, it is possible to divide it into two halves when pressing from a sheet metal or the like, so that the workability is improved.

In the present embodiment, the spiral shaft 19 is rotatably supported by bosses 28 and 29, which are fitted into the upper and lower ends of the outer shell 2 and fixed by bolts 27, via bearings 28a and 29a. The upper end portion thereof projects upward through a central hole 8a provided in the central portion of the flange portion 8 integrally attached to the upper end of the outer shell body 2 and is directly connected to the output shaft 7a of the motor 7.

Holes (not shown) are formed in the vicinity of the four corners of the upper surface of the flange portion 8, and the motor support base 14 is provided with the support cylinder 16 arranged concentrically with the holes interposed.
After mounting, the nut 15b is screwed and fastened to the bolt 15a protruding through the hole of the flange portion 8 and the support cylinder 16 and the hole (not shown) of the motor support base 14 and protruding to the upper surface of the motor. The support base 14 is fixed, and the motor 7 is fixed on the motor support base 14.

The motor support 14 has a gate-like shape in which both side portions of the plate-like member are bent downward when viewed from the front,
Screw holes (not shown) into which a set screw 10 serving as a pivoting means is screwed are provided at both ends of the opposite sides of the discharge cylinder 4 respectively, and symmetrically provided on both sides of the angle adjusting member 9. The angle adjusting member 9 is pivotally mounted by screwing a set screw 10 fitted in the formed slit 9a into the screw hole and tightening the set screw 10. Therefore, the set screw 10
When the angle adjustment member 9 is loosened, the angle adjusting member 9 can adjust the outward protruding length within the range of the length of the slit 9a in the longitudinal direction, and can rotate with the set screw 10 serving as a pivot member serving as a fulcrum. . In the present embodiment, the motor support 14 is provided with the screw holes for screwing the setscrews 10 on both sides, but instead of the screw holes, holes for inserting the setscrews 10 are provided. The angle adjusting member 9 may be pivotally mounted by screwing a nut onto the tip of the set screw 10 protruding from the hole.

On the other hand, a yoke 11 as a supporting member for mounting a mounting member 12 projecting in the same direction as the angle adjusting member 9 is projectingly provided on the lower end side of the outer shell body 2, and a tip end of the yoke 11 is provided. The mounting member 12 is mounted by means of a set screw 13 which is a pivoting means. Therefore, the mounting member 12 can be rotated about the set screw 13 as a fulcrum.

Further, in the present embodiment, a switching shutter mechanism as shown in FIG. 3 is provided at the branch portions of the first outlet cylinder 5 and the second outlet cylinder 6 branched from the discharge cylinder 4.

This switching shutter mechanism comprises a shutter shaft 2
5 is provided with a switching shutter plate 24 integrally provided, and both ends of the shutter shaft 25 are provided through holes provided in the front wall and the rear wall on the bottom wall side of the branch portions of the first outlet cylinder 5 and the second outlet cylinder 6. It is rotatably supported by protruding,
The lever 20 is integrally attached to the one end protruding from the front wall with the washer 20a interposed, and the substantially L-shaped crank 21 is attached to the other end protruding from the rear wall with the washer 21a interposed. It is attached integrally, and the free end of the crank 21 and the locking member 23 fixed to the lower surface wall of the discharge cylinder 4 are connected by a tension spring 22.
As a result, when the lever 20 is rotated clockwise or counterclockwise in the drawing, the switching shutter plate 2
4, the crank 21 rotates in the same direction, and the elastic force of the tension spring 22 acts in the same direction as these rotation directions to cause the switching shutter plate 24 to branch the first outlet cylinder 5 or the second outlet cylinder 6. Urged so as to contact the open end of the
The first outlet cylinder and the second outlet cylinder 6 are configured to be alternately opened and closed.

Next, the operation of this embodiment will be described.

As shown in FIG. 5, a vertical rotary grain sorter 3
No. 0 side wall 31a is provided with a waste grain discharge port 33 into which the introduction cylinder 3 of the vertical grain transporter 1 is fitted, and the attachment member 12 is fitted into the hole 12a by a fixing means such as a screw 12b. The angle adjusting member 9 is fixed to the hole 9b.
It is fixed to the side wall 31a by a fixing means such as a screw 9c that is inserted in the. At this time, loosen the setscrew 10 and slit 9
The angle adjusting member 9 is projected toward the side wall 31a by using a as a guide, and the set screw 10 is tightened and fixed again at a position where the inclination angle of the vertical grain conveyor 1 with respect to the side wall 31a becomes a predetermined angle. At this time, the mounting member 12 and the angle adjusting member 9 are respectively set screws 13, 10 which are pivoting means.
Since the vertical grain conveyor 1 can be rotated about the fulcrum as a fulcrum, the vertical grain conveyor 1 can be easily rotated and attached in accordance with the deformation of the inclination angle of the vertical grain conveyor 1.

Here, the inclination angle of the vertical grain conveyor 1 with respect to the side wall 31a can be arbitrarily set within the range of 2 to 10 degrees as required.

After the vertical grain conveyor 1 is attached to the vertical rotary grain sorter 30 as described above, the operation of both is started.

When unsorted grains are supplied from the hopper 35,
The supplied unsorted grains are sorted by the vertical rotary grain sorter 30 into sized grains, scrap grains and deformed small-diameter grains as described above, and the sized grains are stored in the storage tank 32. On the other hand, the waste grains and the deformed small-diameter grains are introduced into the vertical grain transporter 1 through the introduction cylinder 3 fitted in the waste grain discharge port 33 and are conveyed upward by the rotating spiral blade 18. The scrap particles and the deformed small-diameter particles conveyed upward rotate the lever 20 in the clockwise direction or the counterclockwise direction as indicated by the arrow in FIG. 3 to cause the first outlet cylinder 5 and the second outlet cylinder 6 to rotate. By opening one of the two and closing the other, the selective release from either one. Therefore, while packing and weighing the scrap particles and the deformed small diameter particles discharged from one of the first outlet cylinder 5 and the second outlet cylinder 6,
A continuous operation can be performed on the other outlet cylinder by performing a preparatory work.

In the present invention, the angle adjusting member is not limited to the above embodiment, and a plurality of holes having a size into which a set screw can be inserted are formed at both sides of the angle adjusting member at intervals. It is possible to change the projecting length stepwise by inserting and tightening a set screw into one of them. Further, in the above embodiment, the motor support is pivotally attached by the set screw, but the yoke is integrally provided on the upper end side of the outer shell, and the set screw is screwed into the screw hole provided in the yoke. It may be pivotally attached.

By the way, an experiment of the grain carrying capacity of a vertical grain carrying machine of the following size according to the present invention was conducted, and the results are shown in Table 1.

Length of outer shell (height): 780 mm Shape of outer shell: regular octahedron Distance between opposing ridge angles of cylindrical outer shell (inner diameter of outer shell): 80
mm Minimum value of the gap between the outer shell and the outer peripheral edge of the spiral wing: 1.
7 mm Rotation speed of spiral shaft: 1300 rpm Pitch of spiral blade (distance between adjacent spiral blades):
40 mm

[0029]

[Table 1] As is clear from Table 1, when the inclination angle of the vertical grain transporter with respect to the side wall of the vertical rotary grain sorter is set to 10 degrees, the grain transporting ability becomes higher than that in the vertical state. This is considered to be because the inclination angle reduces the amount of grains leaking downward from the gap between the inner surface of the ridge angle of the outer shell and the outer peripheral edge of the spiral blade.

[0030]

Since the present invention is configured as described above, it has the following effects.

By the angle adjusting member and the mounting member, the vertical rotary grain sorter of the present invention can be mounted by setting the inclination angle with respect to the side wall of the vertical rotary grain sorter arbitrarily. Since the discharged grains such as scrap grains can be conveyed upward and discharged from either the first outlet cylinder or the second outlet cylinder to perform bagging work and weighing work, continuous operation of these can be performed. It is possible and work efficiency is dramatically improved.

If the outer shell is a regular octahedron cylinder, the outer shell can be manufactured easily and inexpensively.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a vertical grain conveyor according to the present invention.

FIG. 2 is a partial cross-sectional side view showing a cross section of a main part of the vertical grain conveyor shown in FIG.

FIG. 3 is a schematic perspective view showing a switching shutter mechanism of the vertical grain conveyor shown in FIG.

FIG. 4 is a schematic cross-sectional view taken along the line AA of FIG.

5 is a perspective view showing a state in which the vertical grain conveyor shown in FIG. 1 is attached to a side wall of a conventional vertical rotary grain sorter.

[Explanation of symbols]

1 Vertical grain conveyor 2 outer shell 2a Ridge 3 introduction tube 4 discharge cylinder 5 First outlet tube 6 Second outlet tube 7 motor 8 Flange 9 Angle adjustment member 10,13 Set screw 11 York 12 Mounting member 14 Motor support base 15a, 17, 27 bolts 16 Support tube 18 spiral wings 19 spiral axis 20 lever 21 cranks 22 Tension spring 23 Locking member 24 Switching shutter plate

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-278383 (JP, A) Actual opening Sho-58-35934 (JP, U) Actual opening flat 6-3447 (JP, U) Actual opening 1- 95286 (JP, U) Actual development Sho 61-64378 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01F 12/46 A01F 12/50 B02B 7/00 B07B 1/22 B65G 33/08 B65G 47/44

Claims (2)

(57) [Claims] 1. A positive octahedral cylindrical outer shell, an inlet for introducing the grains provided on the lower side of the outer shell, provided on the upper end of the outer shell release A first outlet cylinder and a second outlet cylinder branched from the cylinder in a bifurcated manner, a switching shutter mechanism for alternately opening and closing the first outlet cylinder and the second outlet cylinder, and inside the outer shell body. A spiral shaft having spiral blades arranged concentrically, and a rotation driving means for rotating the spiral shaft are provided, and a projecting length in a lateral outward direction is variable on an upper end side of the outer shell body. An angle adjusting member is provided, and a mounting member that projects in the same direction as the projecting direction of the angle adjusting member is provided on the lower end side of the outer shell, and the angle adjusting member and the mounting member are provided. Vertical grain conveyor characterized by being configured to be fixed to the side wall of a vertical rotary grain sorter Sending machine. 2. The angle adjusting member and the mounting member are pivotally attached to a supporting member integrally provided on the outer shell by pivoting means, and are rotatable about the pivoting means. The vertical grain conveyor according to claim 1 .