JP2000007140A - Control system for bulk material paying out device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely pay out a bulk material by stopping a paying-out machine by a paying-out machine traveling/stopping device when a detection signal from a pressure detection means exceeds a set value. SOLUTION: Because load pressure of a pressure detection means is reduced when a small mountain-shaped bulk material 1 is left within a storage tank 2 at a final stage of a pay-out and a paying-out machine 3 travels at a place where the bulk material 1 does not exist, an operation control is switched to a bottom cleaning mode (A). Next, when a rotary wheel 32 of the paying-out machine 3 comes into contact with a first mountain of the bulk material 1 (B), load pressure of the rotary wheel 32 is detected by a pressure detection means and this signal is transmitted to a paying- out traveling/stopping device. When load pressure is a set value or more, the traveling of the paying-out machine 3 is automatically and surely stopped at the center part of the mountain of the bulk material 1 and the mountain of the bulk material 1 is surely paid out (C). When the paying-out of the bulk material 1 is finished and the detection signal from the pressure detection means of the rotary wheel 32 does not exceed the set value of the paying-out machine traveling/stopping device, the paying-out machine 3 travels till the machine 3 comes into contact with a mountain of the next bulk material 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control system for a bulk material dispensing apparatus, and more particularly, to a method for moving bulk materials stored in a storage tank below a bottom wall through a discharge port formed in the bottom wall of the storage tank by a rotating wheel. The present invention relates to a control system for a bulk discharging device capable of completely discharging a material without remaining on a placed conveyor.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4 and FIG. 4 is known and is used, for example, for self-unloader type bulk carriers, storage tanks of steel works, thermal power plants, and the like.

[0003] The bulk dispensing device 4 includes a bottom wall 2 of a storage tank 2.
1, a slit-shaped payout port 22 over substantially the entire length thereof.
Is provided, and a mountain-shaped cover body 23 is installed above the payout opening 22. The payout machine 3 is caused to reciprocate on traveling rails 24, 24 arranged in the cover body 23 over the length direction. The dispensing machine 3 has a traveling vehicle 31 and a rotating wheel 32 arranged along the bottom wall 21 surface. When the dispenser 3 travels, the loose objects 1 stored in the storage tank 2 are sequentially moved from the lowest layer by the rotation of the rotating wheel 32 to the conveyor 5 disposed below the bottom wall 21 through the dispensing port 22 through the dispensing port 22. It is dropped on the conveyor 5 and is conveyed to the next conveying means or a collection place via the conveyor 5.

[0004]

However, it is difficult to uniformly store the bulk material 1 in the storage tank. Therefore, simply moving the dispensing machine 3 back and forth at a constant speed makes it difficult to pay out all the bulk material in the storage tank, so that the bulk material partially remains in the storage tank, and different types of bulk material are left. There is a problem that both are partially mixed when storing bulk materials.

[0005] Therefore, in order to completely discharge the loose materials partially remaining at a plurality of locations in the storage tank from the payout port, the dispensing machine is arranged so that the rotating wheel of the dispenser is positioned at the remaining loose materials. They were manually run and moved manually and intermittently by visual inspection, and the remaining bulk was paid out from a payout port. As described above, in order to pay out all the bulk materials, it is necessary to manually move and move the payout machine to each of the remaining bulk materials, and thus there is a problem that extremely complicated work is required. Was.

The present invention provides a practically useful bulk material dispensing apparatus control system which solves the above-described conventional problem of dispensing at the end of dispensing, that is, at the time of bottoming.

[0007]

According to the present invention, there is provided a control system for a bulk material dispensing apparatus, comprising: a pressure detecting means for detecting a load on a rotating wheel; and a detection signal from the pressure detecting means. By providing a dispensing machine traveling / stopping device for traveling or stopping the dispensing machine,
At the time of bottom lifting, when the detection signal from the pressure detecting means exceeds the set value, that is, when the rotating wheel comes into contact with the loose object, the dispensing machine is stopped by the dispensing machine traveling / stopping device to reliably remove the loose material. Pay out.

In addition, by providing a rotating wheel control device for controlling the rotating speed of the rotating wheel based on a detection signal from the loosened material amount detecting means, it is easy to determine when to switch to the bottom lifting operation. By increasing the rotation speed of the rotating wheel when running the dispensing machine during the bottom lifting operation, a more efficient bottom lifting operation can be performed.

In addition, a dispensing machine traveling control device for controlling the traveling speed of the dispensing machine based on the detection signal from the traveling current detecting means for detecting the traveling current of the dispensing machine is provided, so that the loose objects can be removed during the bottom lifting operation. By increasing the traveling speed of the dispensing machine in a non-existent location, more efficient dispensing can be performed.

[0010]

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

FIGS. 1 to 3 show a preferred embodiment of the present invention. The whole structure of the bulk goods dispensing apparatus 4 is substantially the same as that of the conventional example shown in FIGS. is there.

The dispensing machine 3 has a rotating wheel 32
And a payout machine running / stopping device 7 for running or stopping the payout machine 3 based on a detection signal from the pressure detecting means 6.

The pressure detecting means 6 detects the presence or absence of the loose material 1 in the storage tank 2 or the remaining amount of the loose material, and issues an electrical detection signal to that effect to the dispensing machine traveling / stopping device 7. Yes, for example, means for detecting a load current flowing through the driving device 33 of the rotating wheel 32 when the rotating wheel 32 contacts the bulk 1 in the storage tank 2, or when the rotating wheel 32 is in contact with the bulk 1 Conventionally known pressure detecting means such as means (not shown) for detecting the generated load (pressure) with a sensor or the like can be used.

In the present embodiment, when the pressure (load) detected by the pressure detecting means 6 exceeds a set value,
A detection signal is sent to the dispensing machine traveling / stopping device 7 to stop traveling of the dispensing machine 3.

At the time of bottom shoveling, the bulk material 1 in the storage tank 2 is
Usually remains in a hill-like shape. Therefore,
A timer 71 (see FIG. 2) may be provided in the dispensing machine traveling / stopping device 7 so that the traveling of the dispensing machine 3 is stopped when the rotating wheel 32 sufficiently contacts the mountain of the remaining bulk material 1.

Further, the dispensing machine traveling / stopping means 7 controls the traveling / stopping of the dispensing machine. For example, the stop portion can be replaced with a traveling state in which the speed is reduced.

In addition, when the bulk material 1 is discharged from the storage tank 2 to the conveyor 5 through the discharge port 22, the bulk material discharging device 4 includes a payout amount detecting means 8 for detecting the amount of the bulk material 1 to be discharged and the payout amount detecting means 8. A rotation wheel control device for controlling a rotation speed of the rotation wheel based on a detection signal from the amount detection means;

The payout amount detecting means 8 is, for example, a conveyor 5
A conventional well-known device such as a device that converts a load of a current flowing through the driving device 51 of the conveyor 5 into an electric signal and generates the electric signal can be used as the measuring device 81.

In particular, in this embodiment, when the payout amount is smaller than the set value, the rotation speed of the rotating wheel 32 is increased, and when the payout amount is larger than the set value, the rotation speed is decreased. Make a quick and smooth payout.

Further, in this embodiment, the timer 91 is provided in the rotating wheel control device 9, so that the rotation of the rotating wheel can be controlled with a delay after receiving the detection signal from the payout amount detecting means 8. Therefore, as described above, the rotating wheel 32 contacts the small mountain-shaped bulk material 1 that sufficiently remains in the storage tank 2 when the bottom is touched, or changes the rotation speed of the rotating wheel 32 in a state where the rotating wheel 32 is separated from the bottom, so that accurate control is performed. be able to.

Furthermore, in the present embodiment, the running current detecting means 10 for detecting the running current of the dispensing machine 3 and the running speed of the dispensing machine 3 are controlled based on the detection signal from the running current detecting means 10. The dispenser traveling control device 11 is provided.

As the running current detecting means 10, a conventionally known means such as detecting a change in load current flowing through a running drive (not shown) such as a motor can be used.

In this embodiment, the running current detecting means 10
When the detection signal from is smaller than the set value, that is,
When the rotating wheel 32 is not in contact with the loose objects 1 at the time of bottom lifting, the running speed of the dispensing machine 3 can be increased to improve dispensing efficiency.

The dispensing machine traveling control device 11 is provided with a timer 101 for the same reason as the dispensing machine traveling / stopping device 7 and the rotating wheel control device 9.

Next, the operation of the above-described embodiment of the present invention will be described.

First, as shown in FIG. 3 (A), when the dispensing reaches the final stage, there is a portion on the bottom wall 21 in the storage tank 2 where there is no loose material and a portion where the loose material 1 remains in a hill shape. I do. At this time, the small mountain-shaped bulk material 1 remains in the storage tank 2, and when the dispensing machine 3 travels in a place without the bulk material 1, the load pressure of the pressure detecting means 61 is reduced, so that the operation control is switched to the bottom-bottom mode.

Next, as shown in FIG. 3 (B), when the rotating wheel 32 of the dispensing machine 3 comes into contact with the first mountain (lumps) of the bulk material 1, a load pressure is generated on the rotating wheel 32. This load is detected by the pressure detecting means 61, and this signal is sent to the dispensing machine traveling / stopping device 7, and when the load pressure is equal to or less than the set value, the traveling of the dispensing machine 3 is stopped.

In particular, in this embodiment, it has been a long time since the rotating wheel 32 of the dispensing machine 3 has started to contact the pile of the loose objects 1, that is, the state in which the dispensing machine 3 has sufficiently contacted the small mountain of the loose articles 1. By stopping the running of the payout machine 3, the payout can be performed reliably and efficiently.

Accordingly, the dispensing machine 3 performs dispensing with the rotating wheel 32 automatically and reliably stopped at the center of one pile of loose materials, so that the pile of loose materials 1 is reliably dispensed. (See FIG. 3C).

In addition, the dispensing machine 3 is used to
The rotating wheel 32 comes into contact with the pile of the loose object 1 such as when the mountain does not reach the mountain (state shown in FIG. 3A) or when the pile of the bulk object 1 has been paid out (the state shown in FIG. 3C). In a state where it is not performed, that is, when the detection signal from the pressure detecting means 6 of the rotating wheel 32 does not exceed the set value of the dispensing machine traveling / stopping device 7, the dispensing machine 3 comes into contact with the next pile of the loose objects 1. Travel until.

At this time, the detection signal from the dispensing amount detecting means 8 for detecting the dispensing amount of the bulk material 1 provided on the conveyor 5 falls below the set value. Increase the rotation speed.

In addition, when the dispensing machine 3 is traveling, when the traveling current detected by the traveling current detecting means 10 falls below the rating, that is, the rotating wheel 3 of the dispensing machine 3 is not in contact with the bulk 1. Sometimes, the payout machine traveling control device 11
Thus, the running speed of the dispensing machine is increased to improve the dispensing efficiency.

It should be noted that by detecting the amount of loose materials to be discharged from the discharge amount detecting means 8, the time when the amount of loose materials 1 in the storage tank 2 becomes low, that is, the time for controlling the dispensing machine 3 in the bottom-bottom mode. It can be determined automatically (not shown).

As described above, according to the present embodiment, the running of the dispensing machine 3 is stopped when the rotating wheel 32 is in contact with the pile of the bulk material 1 remaining on the bottom wall 21 of the storage tank 2 at the time of bottom scooping. In this state, the dispensing is performed reliably, and the running speed of the dispensing machine 3 is increased in the portion of the bottom wall 21 where the loose material 1 remains relatively little or does not remain. By increasing the number, efficient payout is performed.

[0035]

As described above, according to the present invention, the litter remaining at the time of bottom lifting is automatically detected and the running of the dispensing machine is stopped. Even if it partially remains at a plurality of locations on the bottom wall of the car, all the remaining bulk materials can be efficiently and automatically dispensed, so that overall cargo handling time can be reduced and labor can be reduced. .

In addition, at the time of bottom lifting, the running speed of the dispensing machine or the number of rotations of the rotating wheel is increased to reduce the dispensing time and the storage tank for the portion where the loose material remains relatively little or does not remain. The bulky material remaining on the bottom wall can be efficiently dispensed.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a bulk material dispensing apparatus according to a preferred embodiment of the present invention.

FIG. 2 is a schematic diagram of a control system for an embodiment using the bulk dispenser shown in FIG. 1;

FIG. 3 is an explanatory diagram showing a work order in a payout state according to the embodiment of the present invention shown in FIG. 2;

FIG. 4 is a longitudinal sectional view showing a conventional payout device.

FIG. 5 is an enlarged sectional view of the dispensing machine shown in FIG. 4 taken along line VV.

[Explanation of symbols]

1 bulk materials, 2 storage tanks, 3 dispensers, 4 bulk dispensers, 6 pressure detecting means, 7 dispenser running / stopping means, 8 dispensing amount detecting means, 9 rotating wheel control device, 10 running current detecting means, 11 dispensing Control unit, 32 rotating wheels.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3F075 AA08 BA01 BB01 CA04 CA05 CA06 CA09 CB06 CB12 3F080 AA53 BA10 BF08 CC30 CE03 CG15 EA08 EA10 FB05 FB07

Claims (2)

[Claims] 1. A payout port provided in a bottom wall of a storage tank for storing bulk material, a conveyor disposed below the payout port, and a bulk material stored in the storage tank being transferred from the payout port onto the conveyor. A dispensing device having a dispensing machine having a rotating wheel for dispensing to a load detecting device for detecting a load on the rotating wheel, based on a detection signal from the pressure detecting device. A dispensing machine traveling / stopping device for traveling or stopping the dispensing machine, a dispensing amount detecting means for detecting the dispensing amount of the bulk material, and a rotation speed of the rotary wheel based on a detection signal from the dispensing amount detecting means. A control system for a bulk material dispensing device, comprising: a rotating wheel control device for controlling. 2. A payout port provided in a bottom wall of a storage tank for storing bulk materials, a conveyor disposed below the payout port, and a bulk material stored in the storage tank being transferred from the payout port onto the conveyor. A dispensing device having a dispensing machine having a rotating wheel for dispensing to a load detecting device for detecting a load on the rotating wheel, based on a detection signal from the pressure detecting device. A dispensing machine traveling / stopping device for traveling or stopping the dispensing machine, traveling current detecting means for detecting a traveling current of the dispensing machine, and controlling a traveling speed of the dispensing machine based on a detection signal from the traveling current detecting means. A control system for a bulk material dispensing device, comprising: a dispensing machine traveling control device.