JPH0725427B2 - Powder and granular material feeder - Google Patents

Description

TECHNICAL FIELD The present invention relates to a powdery or granular material supply device that is automatically controlled so that a passing gap of powdery or granular material is constant.

<Prior art> For example, when the sintering raw material is supplied to the traveling pallet of the sintering machine, the sintering raw material is supplied in a uniform state in the width direction and the traveling direction of the traveling pallet and is formed on the traveling pallet. It is necessary to supply coarse particles to the lower layer of the raw material layer and fine particles to the upper layer. In order to obtain such a sintering raw material layer, the present inventors previously proposed an apparatus as shown in FIG. 2 for improving the conventional method. That is, in the apparatus shown in FIG. 2, the sintering raw material 2 stored in the raw material hopper 1 is cut out by the gate 3 installed in the vicinity of the lower opening of the raw material hopper 1, and the thickness of the roll feeder 4 is adjusted. The raw material hopper 1 is cut by rotation, and the cut raw material 2 is accumulated and dropped on a deflector plate 5 that is inclined and supplied onto a pallet 6 that runs in the direction of the arrow in FIG. To be done. At this time, the sintering raw material 2 is
Due to friction with the deflector plate 5 and friction between the sintering raw materials 2, coarse particles tend to segregate in the lower layer and fine particles tend to segregate in the upper layer while falling.

By the way, since the segregation tendency of the sintering raw material 2 varies depending on the raw material state and the operating condition, the segregation tendency of the sintering raw material 2 is freely rotatable between the roll feeder 4 and the deflector plate 5 so as to obtain an appropriate segregation tendency for these conditions. A guide plate 9 is installed. That is, a lever 8 is tiltably attached to the outer periphery of the support shaft 4a of the roll feeder 4 via a bearing 7, a guide plate 9 is attached to one end of the lever 8, and a rod end of a rotation cylinder 10 is attached to the other end. It is connected. And
By driving the rotating cylinder 10 to tilt the lever 8 and rotationally moving the guide plate 9 attached to this end to an appropriate position, the length by which the sintering raw material 2 falls on the deflector plate 5 is adjusted. As a result, the segregation tendency of the sintering raw material 2 is adjusted.

The above is the previously proposed method of adjusting the segregation tendency by the guide plate 9, but this eliminates the conventional inconvenience that the segregation amount is fixed because it falls directly from the roll feeder 4 onto the deflector plate 5. It was devised so that an appropriate amount of segregation could be obtained.

<Problems to be Solved by the Invention> However, in the actual operation of the sintering machine, adjustment of the production amount, adjustment of the packing density of the sintering raw material 2 on the pallet 6 accompanying changes in the raw materials and operating conditions, and the bed height Adjustment and the like are required, and as specific machine operations, operations such as upward / downward movement of the deflector plate 5 and adjustment of the inclination angle are required, and these operations are usually performed manually at the site. Therefore, in order to change the position of the guide plate 9 for adjusting the segregation,
It is necessary to check the relative position between this and the deflector plate 5, and for example, if the position of the deflector plate 5 is fixed and the guide plate 9 is moved, a gap between the guide plate 9 and the deflector plate 5 is generated. Change, and despite the adjustment, the falling length of the sintering raw material 2 is insufficient, resulting in insufficient adjustment, or the gap becomes too narrow, which hinders the smooth flow of the sintering raw material 2. Occur.
Conversely, even if the guide plate 9 is fixed and the position of the deflector plate 5 is adjusted, the same problem as described above occurs.

After all, in order to achieve the intended purpose, it is necessary to keep the gap between the deflector plate 5 and the guide plate 9 constant, but for this reason, one of the operating factors of the deflector plate 5 and the guide plate 9 is changed. If this is done, it is necessary to readjust all of the other factors, which not only requires a great deal of labor, but also causes a reduction in the machine operating rate, which is extremely disadvantageous in practical use.

The present invention eliminates the above drawbacks and saves labor,
It is an object of the present invention to provide a powdery or granular material supply device that can always realize stable operation and reliability improvement.

<Means for Solving Problems> In order to solve the problems, the present invention provides a tiltable guide plate for dropping powder particles discharged from a raw material hopper through a roll feeder to an arbitrary position of a deflector plate. In the powder and granular material supply device having, the deflector plate having a drive mechanism configured so as to be able to move up and down, tilt and move forward and backward, the angle of the guide plate and the tilt of the deflector plate. And each position detection sensor provided so as to detect the height, data input means for presetting the angle and height of the guide plate and the deflector plate, and the data input means and the position detection sensor for each of the position detection sensors. A calculation circuit for calculating the gap between the guide plate and the deflector plate based on the data, and a calculation gap by the calculation circuit. And a hydraulic unit control circuit for controlling a hydraulic unit that moves the drive mechanism so that the distance approaches a set value.

<Operation> With the above configuration, even if the deflector plate and the guide plate are adjusted in response to changes in the raw material condition, the operating condition, etc., the gap through which the raw material passes between the plates is always constant by the control mechanism. Since this is maintained, a smooth supply of raw materials is secured, stable operation, labor saving, etc. are achieved.

<Example> An example of the present invention will be described below with reference to FIG.

FIG. 1 is a cutaway side view of the device of the present invention (note that the first
In the figure, the same elements as those shown in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted. ), The deflector plate 5 is slidably fitted and held on the support base 11, and this is connected to the rod end of the lifting cylinder 12 fixedly mounted on the support base 11 by a pin 29.

On the other hand, on the rail 17 laid on a stand not shown,
A trolley 18 is movably installed via wheels 21, and a traveling cylinder 16 is fixedly mounted on the trolley 18. A rod end of the traveling cylinder 16 is attached to a pedestal 19 as shown in the figure. Has been done.

By the way, the lower part of the support base 11 is pivotally attached to the carriage 18 by means of a pin 28, and the upper part is a rod end of a tilting cylinder 14 whose one end is pivotally attached to the carriage 11. It is rotatably connected by a pin 30. Thus, the deflector plate 5 is configured to be movable up and down, tilted, and moved back and forth in three directions by a drive mechanism such as the carriage 18, the support 11, and the hydraulic cylinders 12, 14, 16.

Further, the apparatus is provided with an arithmetic circuit 25, in which each hydraulic cylinder 12 based on various input data keyed in by the height switch keyboard switch 23, the angle keyboard switch 24 and the guide plate keyboard switch 31. Stroke amounts of 14, 14 and 16 are calculated. A control circuit for controlling the hydraulic unit 27 is provided between the arithmetic circuit 25 and the hydraulic unit 27 for supplying pressure oil to the various hydraulic cylinders 12, 14, 16.
26 is interposed, and the control circuit 26 includes a lift cylinder 12, a tilt cylinder 14, position sensors 13, 15, 20 such as potentiometers installed on a carriage 18, and a roll feeder 4.
A detection signal is input from an angle sensor 22 installed around the support shaft 4a.

In the state shown in FIG. 1, the gap between the guide plate 9 and the deflector plate 5 is maintained at l, and the sintering raw material 2 in the raw material hopper 1 is cut out by the gate 3 and the thickness of the roll feeder 4 is adjusted. Guide plate 9 by rotation
The deflector plate 5 flows upward and passes through the gap l.
It drops to the top and is finally supplied onto the pallet 6 traveling in the direction of the arrow in the figure. The gap 1 at this time is set to an optimum value for the current operating conditions and the like.

If the position of the guide plate 9 is changed according to changes in the raw material, operating conditions, etc., the sintering raw material 2 on the deflector plate 5 can be changed.
Is adjusted, the height of the deflector plate 5 is changed to adjust the layer height of the sintering raw material 2 on the pallet 6, and the inclination angle is changed to adjust the packing density.

By the way, the position of the deflector plate 5 is a position sensor.
The position of the guide plate 9 is detected by the angle sensor 22, and the respective detection signals are input to the control circuit 26.

When the position of the deflector plate 5 is adjusted, the height of the deflector plate 5, that is, the layer height of the sintering raw material 2 and the inclination angle of the deflector plate 5 have a functional relationship with each other. The layer height keyboard switch 23 and the angle keyboard switch, respectively. If the set value is impressed by 24, the movement amount of the lifting cylinder 12 and the tilting cylinder 14 is calculated by the arithmetic circuit 25 on the basis of these imput data, and the calculation result is input to the control circuit 26. To be done. The control circuit 26 includes the position sensors 13, 1
Since the detection signal from 5 is input, a control signal is sent to the hydraulic unit 27 from this and the calculated result that is input, and the hydraulic unit 27 drives the lifting cylinder 12 and the tilting cylinder 14 to deflect the deflector plate. Adjust the height and inclination angle of 5 to the set values.

Similarly, the position of the guide plate 9 is adjusted by inserting a set value from the guide plate keyboard switch 31. That is, the input set value is input to the arithmetic circuit 25, where the operation amount of the rotating cylinder 10 is calculated, and the control circuit 26 controls the hydraulic unit 27 based on the result and the detection signal from the angle sensor 22. Then, the rotation cylinder 10 operates by a predetermined amount and the guide plate 9
Is adjusted to the set position.

When the position of the deflector plate 5 or the guide plate 9 is adjusted as described above, the deflector plate 5 or the guide plate 9 is adjusted.
The gap 1 between the guide plate 9 and the guide plate 9 changes, but the optimum value of the gap 1 is determined by the program of the arithmetic circuit 25, the control circuit 26 controls the hydraulic unit 27, and the traveling cylinder 16 is moved by a predetermined amount. The dolly 18 is moved so as to make a stroke to obtain a specified clearance l. At this time, the dolly 18
The position of is detected by the position sensor 20. In addition,
The set value of the gap 1 may be directly input from a keyboard switch set separately.

In the above, the relative positions of the deflector plate 5 and the guide plate 9 are detected by the sensors 13, 15, 20, 22 and the adjustment of the positions of the deflector plate 5 and the guide plate 9 to the set values is automatically performed. Keyboard switch 23,2 installed in the operation room or field
You can proceed with only 4,31 operations. Therefore,
It is not necessary to make adjustments while measuring the angle of the guide plate 9, the height of the deflector plate 5, and the inclination angle, and it is possible to reduce labor and improve the machine operating rate. Further, since the passage gap of the sintering raw material 2 is adjusted to be constant, problems such as clogging of the sintering raw material 2 are solved, stable supply of the sintering raw material 2 is possible, and the accuracy of the segregation adjustment amount is also improved. improves.

In addition, in the above-mentioned examples, the powder material is limited to the sintering raw material, but the device of the present invention can be applied to any other powder material.

<Effects of the Invention> As is clear from the above description, according to the present invention, the relative position between the deflector plate and the guide plate is automatically adjusted to a set value, and the gap between these plates is kept constant. Since the mechanism is provided, it is possible to save labor, improve the machine operating rate, and stabilize the operation.

[Brief description of drawings]

FIG. 1 is a broken side view of the device of the present invention, and FIG. 2 is a broken side view of a conventional device. In the drawings, 1 is a raw material hopper, 2 is a sintering raw material, 4 is a roll feeder,
5 is a deflector plate, 6 is a pallet, 9 is a guide plate, 10 is a rotating cylinder, 12 is a lifting cylinder, 1
3, 15 and 20 are position sensors, 14 is a tilt cylinder, 16 is a traveling cylinder, 18 is a carriage, 22 is an angle sensor, 23 is a height keyboard switch, 24 is an angle keyboard switch, and 25 is an angle keyboard switch.
Is an arithmetic circuit, 26 is a control circuit, 27 is a hydraulic unit, and 31 is a guide plate keyboard switch.

Claims (1)

[Claims] 1. A powdery- or granular-material feeder having a tiltable guide plate for dropping powdery or granular materials discharged from a raw material hopper through a roll feeder to an arbitrary position on a deflector plate. The deflector plate having a drive mechanism configured to be movable in three directions of forward and backward movement, and each position detection sensor provided so as to detect the angle of the guide plate and the inclination and height of the deflector plate, Data input means for presetting the angles and heights of the guide plate and the deflector plate, and an arithmetic circuit for calculating the gap between the guide plate and the deflector plate based on the data from the data input means and each of the position detection sensors. And a hydraulic unit that moves the drive mechanism so that the gap calculated by the arithmetic circuit approaches the set value. Granular material supply apparatus comprising: the hydraulic unit control circuit, the controlling and.