JP7399388B2 - Thrower device - Google Patents

Description

The present invention relates to a grain dryer that dries grains such as rice and wheat using hot air while circulating them inside the machine using a bucket elevator, and particularly relates to a thrower device for fried grains equipped with a discharge switching valve.

Conventionally, in this type of grain dryer, a thrower may be provided connected to the grain discharge section above the bucket elevator (see Patent Document 1). The thrower is used for transporting dried grains to a temporary storage tank at a high place by using a built-in rotary blade.

By the way, with this type of thrower, if the amount of grain supplied from the bucket elevator is too large, or if relatively large pieces of straw or foreign matter are mixed into the supplied grain, the inside of the thrower may become clogged with grain, causing the rotation to stop. The blades may stop. In such a case, it is necessary to discharge the grains stuck inside the thrower. However, in order to discharge the grains stuck inside the thrower, it is necessary to climb a ladder to the top of the bucket elevator, open the case cover on the front of the thrower, and take out the grains inside into a container or bag. Not only is the work at high altitudes dangerous, but the moment the case cover is opened, a large amount of grain scatters and falls.

Regarding the grain frying thrower in this type of grain dryer, the present applicant has proposed a thrower that simplifies the removal of grains stuck in the thrower and prevents the grains from scattering (Japanese Patent Application No. 2019-165129 ).

Japanese Patent Application Publication No. 8-233464

By the way, in actual use of the thrower for grain frying, the thrower case may be installed at an angle depending on the installation location of a temporary storage tank or the like. For example, the position of the grain barrel of the thrower device may be installed from the 12 o'clock position to the 10 o'clock position on a clock face. The frying grain thrower (Japanese Patent Application No. 2019-165129) is equipped with a rotary lever (see reference numeral 16 in FIG. 1 of Patent Application No. 2019-165129) that opens and closes a shutter for discharging grain inside the thrower. When installing the grain lifting cylinder tilted from directly above, the rotation axis (see number 14 in Fig. 2 of patent application 2019-165129) and the operating rope (numbers 17A and 17B in Fig. 2 of patent application 2019-165129) As the distance becomes shorter, the force required to pull the operating rope to open and close the shutter increases, resulting in a problem of poor operability.

Therefore, the present invention aims to provide a thrower for a grain dryer that allows the grain inside the thrower to be easily discharged regardless of the position of the grain lifting tube of the thrower device, and in which case the grain does not scatter. purpose.

In order to achieve the above object, the present invention provides a discharge port and a discharge gutter for conveying the grains discharged from the discharge port at the lower part of the circumferential surface of the thrower case, and the discharge port has an arc-shaped shaft pivotally mounted at one end so as to be openable and closable. A shutter is attached, and the other end of the shutter is formed as a locking part, a rotation shaft that is supported by the discharge gutter is installed horizontally below the shutter, and one end is fixed to the rotation shaft so that the shutter can be rotated. A freely movable shutter lever is provided, and when the shutter lever rotates upward, the shutter lever rotates the shutter to contact the discharge port, and also causes the other end of the shutter lever to engage with the shutter. The shutter protrudes from the discharge gutter so that when the shutter lever is rotated downward, the end of the shutter lever and the locking portion of the shutter are separated and the shutter is released. The thrower is connected to a grain discharge section at the upper part of a bucket elevator installed vertically in a grain dryer, in which a rotary lever is attached to an end of a rotary shaft, and the opening and closing of the shutter can be controlled by the rotary lever. The rotating lever includes a plate member pivotally attached to the end of the rotating shaft, and a lever member, and the plate member is configured to be rotatable about the rotating shaft. An arcuate elongated hole is provided at both ends of the plate member, and the lever member has a bolt member protruding so as to be inserted into the elongated hole, and a rope hanging hole provided at both ends. A bolt member of the lever member is inserted into the elongated hole and fixed with a nut, so that the plate member can be rotatably operated via the lever member.

In the lever member, when the shutter is in close contact with the discharge port, the rotation shaft and one of the rope hanging holes are substantially horizontal, and the shutter is detached from the discharge port and comes into contact with the shutter lever. It is preferable that the other rope hanging hole be approximately parallel to the rotation axis when the rope is in contact with and stopped.

According to the present invention, the rotating lever is composed of a plate member and a lever member, and the plate member is provided with arc-shaped elongated holes at both ends thereof so as to be rotatable about the rotating shaft. , the lever member has a bolt member protrudingly provided so as to be inserted into the elongated hole, and rope hanging holes provided at both ends, and the bolt member of the lever member is inserted into the elongated hole of the plate member. By inserting the rope through the rope and fixing it with a nut, the plate member can be rotated through the lever member, so that when the thrower becomes clogged, the rope provided in each of the rope hanging holes can be rotated. By pulling down one of the rotary levers, the rotary lever and the shutter lever interlocked with the rotary lever rotate downward, thereby opening the shutter, and the grains inside the thrower fall from the discharge port into the discharge gutter and are discharged. be done. After the grain inside the thrower is discharged, pulling down the other of the operating ropes rotates the rotary lever and the shutter lever to push up the shutter and close the discharge port, so that when the thrower becomes clogged, Workers can safely and easily collect grain without having to climb to the top of the bucket elevator, open the thrower case cover, and take out the grain inside. Furthermore, since the lever member can be attached and removed as desired, it can be attached at an angle suitable for opening and closing the shutter, improving convenience.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a thrower device showing an embodiment of the present invention (with the grain barrel attached at the 10 o'clock position on a clock face). FIG. 2 is an enlarged partially cutaway view of FIG. 1 in a state where the shutter is closed. FIG. 3 is an enlarged view of a part of FIG. 2. FIG. 2 is a partially cutaway enlarged view of FIG. 1 in a state where the shutter is open. FIG. 5 is an enlarged view of a part of FIG. 4. FIG. 2 is a perspective view of the thrower device of FIG. 1;

Embodiments of the present invention will be described.
1 is a front view of a thrower device showing an embodiment of the present invention, FIG. 2 is a partially cutaway view of the thrower device of FIG. 1 with the shutter closed, and FIG. 3 is a partially cutaway view of the thrower device of FIG. 4 is a partially cutaway view of the thrower device in FIG. 1 with the shutter open, FIG. 5 is an enlarged view of a portion of FIG. 4, and FIG. 6 is a partially cutaway view of the thrower device in FIG. 1. FIG.
The thrower device 1 includes a thrower case 2 which is rotatably equipped with a combination of four thrower blades 3 extending radially in the circumferential direction from one end, a thrower box 4 for supplying grain into the thrower case 2, and a grain dryer main body. It has a thrower attachment body 5 for attaching to. The thrower mounting body 5 is formed into a cross-shaped shape by a plurality of angle members, and the back side of the thrower box 4 is fixed to the thrower mounting body 5, and a motor base 501 is attached to the lower part of the thrower mounting body 5. The thrower motor 6 is mounted on the motor base 501. Then, the angle of the thrower attachment body 5 is fixed to a flange portion (not shown) of a tank plate of a storage tank of a grain dryer.

The back side of the thrower case 2 is integrally fixed to the front side of the thrower box 4. Inside the thrower box 4, a screw 8 is installed horizontally for conveying grains supplied from a grain inlet 7 provided on the upper surface of the thrower box 4 to the thrower case 2. The grain input port 7 is connected to a discharge port (not shown) at the top of the bucket elevator of the grain dryer through a bellows hose (not shown) or the like. The screw 8 and the thrower blade 3 are arranged on the same axis, and in order to be rotated by a single rotating shaft (not shown), a pulley (not shown) provided at the end of the rotating shaft is used. A motor pulley (not shown) of the thrower motor 6 is interlocked and connected by a V-belt (not shown).

Further, the lower half of the thrower box 4 is formed into a hopper shape, and a communication port 9 is provided at the lower front side of the thrower box 4 and at the lower side of the back side of the thrower case 2, and conveyance is carried out by the screw 8. The grains reach the bottom of the thrower case 2 through the communication port 9, are thrown up by the thrower blades 3, and are fried together with air through the grain lifting tube 10 provided tangentially to the thrower case 2. It is configured to be transported to a temporary storage tank or the like (not shown).

A discharge port 202 is provided at the lower part of the case peripheral surface 201 of the thrower case 2 (see FIG. 2), and an arc-shaped shutter 11 is provided in the discharge port 202. One end of the shutter 11 is pivoted near the discharge port 202 by a hinge 12 so as to be openable and closable, and the other end is bent downward to form a locking portion 111 . Here, the shutter 11 is embossed by the thickness of the case circumferential surface 201 so as to fit tightly into the opening forming the discharge port 202. As a result, when the shutter 11 is closed, unevenness does not occur on the inner circumferential surface of the case circumferential surface 201 due to the sealing of the discharge port 202, and the thrower blade 3 allows the thrower blade 3 to move along the inner circumferential surface of the thrower case 2. There is no resistance to the grain being transported.

Further, a discharge gutter 13 is attached to the lower part of the case peripheral surface 201 so as to surround the discharge port 202 and the shutter 11. The discharge gutter 13 has a hopper shape so that the shutter 11 can rotate downward about the hinge 12. An opening 131 is provided at the lower end of the discharge gutter 13. A rotation shaft 14 is installed horizontally on the front wall and rear wall of the discharge gutter 13. One end of a shutter lever 15 is pivotally attached to the rotation shaft 14 . When the shutter lever 15 is rotated upward about the rotation shaft 14, the shutter lever 15 pushes up the shutter 11, and the shutter 11 rotates about the hinge 12. . The other end of the shutter lever 15 pushes up the locking part 111 of the shutter 11. As a result, the shutter 11 comes into close contact with the discharge port 202, and the discharge port 202 is closed.

A plate member 19 is pivotally attached to the protruding end surface of the rotating shaft 14, and a lever member 161 is joined to the plate member 19. Specifically, a connecting member such as a bolt 22 is provided on one of the plate member 19 and the lever member 161, and an arc-shaped elongated hole 191 centered on the rotation shaft 14 is provided on the other. By fixing with the nut 21, the lever member 161 can be attached at any angle with good operability, regardless of the angle of the grain lifting tube 10 of the thrower device.

The connection between the plate member 19 and the lever member 161 will be explained using an obtuse triangular plate in FIG. 1 as an example. A bolt 22 is provided protrudingly on the triangular surface of the lever member 161. Further, the elongated hole 191 is provided in the plate member 19, and the bolt 22 is fixed with a nut 21 with the bolt 22 passing through the elongated hole 191. Note that a bolt 22 may be provided protruding from the plate member 19, the elongated hole 191 may be provided on the lever member 161, and the bolts 22 may be similarly fixed with nuts 21.

Near the two acute angles of the lever member 161, one is provided with a rope hanging hole 16A, and the other is provided with a rope hanging hole 16B. Furthermore, operating ropes 17A and 17B are suspended from the rope suspension holes 16A and 16B, respectively. It is preferable to attach a grip 171 to the lower end of each of the operating ropes 17A, 17B. As a result, the worker on the floor of the workplace can move the lever member 161, the rotating shaft 14, and the shutter lever 15 by pulling down the grip 171 of either of the operating ropes 17A, 17B. The shutter 11 can be opened or closed.

The mounting angle of the lever member 161 with good operability will be explained in detail. When the shutter 11 is in close contact with the discharge port 202, the rotation shaft 14 and the rope hanging hole 16B become substantially horizontal (see FIG. 3), and the shutter 11 separates from the discharge port and the shutter lever The plate member 161 is attached to the plate member 19 so that the rope hanging hole 16A is substantially parallel to the rotating shaft 14 (see FIG. 5) when the plate member 161 is stopped in contact with the rotary shaft 15. As a result, when pulling down each of the operating ropes 17A, 17B, the distance between the line of action of the force that pulls down each of the operating ropes 17A, 17B and the rotating shaft 14 is approximately the longest, so the shutter 11 can be opened and opened with a small force. A closing action can be performed.

In order to maintain close contact by pressing the shutter 11 against the discharge port 202 with a stronger urging force, the bracket 18 provided on the front wall of the discharge gutter 13 and the A spring 20 is placed between the plate member 19 and the plate member 19. Thereby, the operation ropes 17A, B can reliably open and close the shutter 11, and when the shutter 11 is closed, the tip of the shutter lever 15 presses the locking part 111 of the shutter 11. However, the shutter 11 can be securely held in close contact with the discharge port 202.

In the present embodiment described above, the rotation shaft 14 is rotated by rotating the lever member 161 using the operating ropes 17A, 17B, but the rotation shaft 14 is rotated by an appropriate motor. It can also be moved. Further, although the bolt 22 and nut 21 are used to fix the lever member 161 and the plate member 19, if it is possible to fix the lever member 161 to the plate member 19 at an arbitrary angle, However, the specific mounting configuration is not limited.

As described above, according to the embodiment of the present invention, when the thrower device 1 becomes clogged for some reason, the operator pulls down one of the operating ropes 17B against the spring 20 on the floor of the workplace. As a result, the lever member 161 and the rotation shaft 14 rotate to the left in the figure, and the shutter lever 15, which is attached to the rotation shaft 14, also rotates and hits the hopper-shaped inclined surface of the discharge gutter 13. Stop when touching. At this time, the locking state between the tip of the shutter lever 15 and the locking portion 111 of the shutter 11 is released, and the shutter 11 rotates downward around the hinge 12, comes into contact with the shutter lever 15, and stops. .

When the shutter 11 is opened, the grains stuck in the thrower case 2 fall all at once into the discharge gutter 13 from the discharge port 202 opened at the bottom of the thrower case 2. At this time, if the tip of a vinyl hose (not shown) connected to the opening 131 at the lower end of the discharge gutter 13 is inserted into the grain loading port of the dryer main body, the grains clogged in the thrower case 2 can be removed. Grain is collected into the grain dryer without manual intervention.

After the grains stuck in the thrower case 2 are discharged in this way, the operator then pulls down the other operating rope 17A against the spring 20. As a result, the lever member 161 and the rotation shaft 14 rotate to the right in the figure, and the shutter lever 15 that is pivotally attached to the rotation shaft 14 also rotates, and the shutter comes into contact with the upper surface of the shutter lever 15. Push up 11. When the shutter 11 rotates around the hinge 12 to close the discharge port 202, the tip of the shutter lever 15 is locked to the locking part 111 of the shutter 11.

It is preferable that the discharge port 202 is appropriately shifted clockwise when viewed from the front view (FIG. 2), since the amount of residual grains can be reduced even when the thrower device is tilted.

The thrower of the grain dryer according to the present invention eliminates the conventional work to deal with clogged throwers at high places, allows safe work, and reliably recovers clogged grain, and is highly useful.

1 Thrower device 2 Thrower case 201 Case circumferential surface 202 Discharge port 3 Thrower blade 4 Thrower box 5 Thrower mounting body 501 Motor base 6 Thrower motor 7 Grain input port 8 Screw 9 Communication port 10 Grain lifting cylinder 11 Shutter 111 Locking part 12 Hinge 13 Discharge Gutter 131 Opening 14 Rotating shaft 15 Shutter lever 16A Rope hanging hole 16B Rope hanging hole 161 Lever member 17A Operating rope 17B Operating rope 171 Grip 18 Bracket 19 Plate member 191 Long hole 20 Spring
21 Nut 22 Bolt

Claims (2)

A discharge port and a discharge gutter for conveying the grains discharged from the discharge port are provided at the lower part of the circumference of the thrower case,
The discharge port is equipped with an arc-shaped shutter which is pivotally mounted at one end so as to be openable and closable, and the other end of the shutter is formed as a locking part,
A rotation shaft supported by the discharge gutter is installed horizontally below the shutter,
a shutter lever whose one end is fixed to the rotation shaft so as to be freely rotatable;
When the shutter lever rotates upward, the shutter lever rotates the shutter to abut the discharge port and locks the other end of the shutter lever to a locking portion of the shutter,
so that when the shutter lever rotates downward, an end of the shutter lever and a locking portion of the shutter are separated and the shutter is released;
a rotating lever is pivotally attached to an end of the rotating shaft protruding from the discharge gutter;
A thrower device connected to a grain discharge section at the top of a bucket elevator installed vertically in a grain dryer, in which opening and closing of the shutter can be controlled by the rotary lever,
The rotating lever includes a plate member pivotally attached to the end of the rotating shaft, and a lever member,
The plate member is provided with an arc-shaped elongated hole centered on the rotation axis,
The lever member has a protruding bolt member and rope hanging holes at both ends,
In the thrower device, the lever member is attached to the plate member by fixing the bolt member with a nut in the elongated hole. In the lever member, when the shutter is in close contact with the discharge port, the rotation shaft and one of the rope hanging holes are substantially horizontal, and the shutter is detached from the discharge port and comes into contact with the shutter lever. The thrower device according to claim 1, wherein the other rope hanging hole is substantially horizontal to the rotation axis when the thrower device is in contact with and stopped.

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