JP4022838B2 - Dispensing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary dispensing device used when dispensing loose matter in a storage from a discharge outlet provided on the bottom wall of the storage.
[0002]
[Prior art]
Conventionally, as shown in FIG. 3, for example, in a hopper-type storage 2 that stores bulk materials 1 such as coal, slag, chips, and iron ore as they are, the stored bulk materials 1 are bottom walls 3 of the storage 2. There is known a means for paying out from a payout opening 4 provided on a payout conveyor 6 disposed below the bottom wall 3 using a rotary payout machine 5, such as a self-unloader type ship or a steelworks. Is used.
[0003]
The rotary dispenser 5 has a slit-like outlet 4 formed at almost the entire length in the center in the width direction of the bottom wall 3 in the hopper-shaped storage 2, and along the outlet 4. The rotating foil 7 reciprocates on the inner surface of the bottom wall 3 to drop the bulk material 1 in the storage 2 from the discharge port 4 onto the discharge conveyor 6 arranged along the discharge port 4 below the bottom wall 3. Is.
[0004]
[Problems to be solved by the invention]
However, the rotary wheel 7 in the conventional dispenser 5 is operated at a constant rotational speed in order to perform a quantitative dispensing at a preset rotational speed. For this reason, a predetermined set payout amount can be ensured except for the vicinity of the reversal positions at both ends of the storage 2, but when the reversal is performed at both ends of the storage 2, the foil goes out of the storage 2 by about half. The amount of payout temporarily decreases.
[0005]
Accordingly, there is a problem in that it is difficult to quantitatively dispense the whole, and as a result, it is not possible to carry out quantitative unloading.
[0006]
In order to solve these problems, for example, it is possible to adopt means such as feedback control based on the amount dispensed, but the apparatus and control are complicated, and detection is performed only for the time until the discharged bulk material reaches the weighing point. Accurate control is difficult due to delays.
[0007]
The present invention has been made in view of such circumstances, and a rotary dispensing device used when dispensing loose matter in a storage from a dispensing outlet provided on the bottom wall of the storage is reversed at both ends of the storage. This is to prevent non-quantification caused by a temporary decrease in the set payout amount.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention secures a predetermined payout amount by increasing the number of rotations of the foil in accordance with a decrease in the payout amount generated according to the position of the payout machine when the payout machine is reversed. Thus, the rotation speed of the foil according to the position of the foil is obtained in advance , and the position of the dispenser is detected when the dispenser is reversed, and the rotation speed of the dispenser is determined according to the position of the dispenser. It is characterized in that by controlling the number of revolutions, a decrease in the payout amount at the reverse position is prevented, and a constant amount of stable payout is always performed. Further , the load applied to the foil of the dispenser is used as means for detecting the travel position of the dispenser .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0010]
FIG. 1 to FIG. 2 show one of the preferred embodiments of the present invention, and FIG. 1 is an explanatory view showing the state of the reverse running of the dispenser 5 at the end of the storage 2 over time. FIG. 2 shows, together with a comparative example, changes in the rotational speed of the wheel 7 and the payout amount with respect to the travel position of the dispenser 5 shown in FIGS. 1 (a) to 1 (e). FIG. 2 is a state in which the dispenser 5 is running toward the end of the storage in a state in which the rotational speed of the wheel 7 is set to a set value as shown in FIG. (100%) is shown, and both the present embodiment and the comparative example show a payout amount of almost the set value (100%).
[0011]
As shown in FIG. 1B, when about half of the radius of the foil 7 enters the reversal position RP, in the case of the comparative example in which the foil 7 is rotated at the set value (100%), the amount of payout Decreases to about 90% of the set value.
[0012]
Therefore, when the dispenser 5 reaches the position shown in FIG. 1B, the set amount (100%) is ensured by increasing the rotational speed of the wheel 7 by a 10% decrease in the dispense amount. Can do.
[0013]
Next, as shown in FIG. 1C, when the dispenser 5 enters the reversal position RP, in the case of the comparative example in which the wheel 7 is rotated at the set value (100%), the payout amount is the set value. It has decreased to about 70%.
[0014]
Therefore, the set amount (100%) of payout amount can be ensured by increasing the rotational speed of the wheel 7 by a decrease of the payout amount of 30%.
[0015]
Next, as shown in FIG. 1 (d), when the dispenser 5 is reversed and reaches the position 1 (b), the amount of payout is the same as when the position 1 (b) is reached. Since it has decreased to about 90% of the set value, it is possible to secure a payout amount of the set value (100%) by increasing the rotational speed of the foil 7 by a decrease of the payout amount by 10%.
[0016]
Then, as shown in FIG. 1 (e), when the dispensing machine 5 returns to the normal travel position, the wheel 7 is rotated at the set value (100%) in both the present embodiment and the comparative example, so that the set value (approximately) 100%) can be secured.
[0017]
Thus, according to the present embodiment, the traveling position of the dispenser 5 is detected at the reverse position, and the rotational speed of the wheel 7 of the dispenser 5 is controlled according to this predetermined position, so that This prevents a decrease in the payout amount and always enables a constant amount of stable payout.
[0018]
In the present embodiment, the case where the rotational speed of the wheel 7 at each traveling position is changed stepwise has been described. However, it is also possible to perform control that continuously changes steplessly.
[0019]
Further, in the present embodiment, although controls the rotational speed of the wheel 7 by detecting the position of the payout machine 5 is to ensure control to allow predetermined payout amount, instead rotational speed of the wheel 7 The rotational speed may be controlled by detecting the load applied to the wheel 7.
[0020]
【The invention's effect】
As described above, according to the present invention, it is possible to perform a fixed amount payout by increasing the number of rotations of the foil by a predetermined amount when the dispenser is reversed.
[0021]
Further, when the dispenser is reversed, the position of the dispenser is detected to control the rotation speed of the foil, and the control is simple and reliable.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory view showing a state over time of a reverse running of a dispenser at an end of a storage in a preferred embodiment of the present invention.
FIG. 2 is a graph showing, together with a comparative example, changes in the number of rotations of the wheel and the amount of payout with respect to the travel position of the dispenser shown in FIGS.
FIG. 3 is an explanatory diagram showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bulk material 2 Storage 3 Bottom wall 4 Discharge outlet 5 Discharge machine 6 Discharge conveyor 7 Foil

Claims (2)

From the slit-shaped dispensing port formed over the entire length of the bottom wall of the storage unit, a dispensing machine having a rotary foil is disposed along the dispensing port. In a dispensing device that dispenses on a dispensing conveyor disposed along the dispensing outlet below the bottom wall by reciprocating, the amount of dispensing generated according to the position of the dispensing machine when the dispensing machine is reversed . The number of rotations of the foil according to the position of the foil is obtained in advance so as to secure a predetermined amount of dispensing by increasing the number of rotations of the foil according to the amount of decrease, and when the dispensing machine is reversed, by detecting the position of the payout machine always constant weight to prevent the degradation of the payout amount of the rotational speed of the payout machine in an inverted position by controlling the number of rotation corresponding to the position of the payout machine Dispenser being characterized in that to perform the boss was payout. 2. A dispensing apparatus according to claim 1, wherein a load applied to a wheel of the dispensing machine is used as means for detecting a traveling position of the dispensing machine when the dispensing machine is reversed .

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