JPH075151B2 - Level measurement and hanging suspension device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a level measuring and hanging suspension device.

(Prior art and its problems) In various devices for accumulating powder and granules such as melting furnaces and silos, a hanging phenomenon often occurs. When the hanging phenomenon occurs, the powder and granules are taken out from the lower part of the device. In addition, only a cavity is created under the hangings, and the level of the granular material does not decrease. Therefore, even if the level is measured with a level meter, the level corresponding to the accumulated amount of granular material must be correctly measured. However, there is a problem that it is difficult to replenish the powder and granules.

For this reason, conventionally, it has been necessary to constantly monitor the occurrence of the hanging phenomenon by visual inspection, and once the hanging phenomenon occurs, it is necessary to manually destroy the hanging mechanism, and the removal of the powder or granular material must be performed. There is a problem that it is difficult to automate the process from the process to the input. The present invention aims to solve such problems.

(Means for Solving the Problems) In order to solve the above problems, the present invention is capable of attaching the other end of a wire having a weight attached to a tip end thereof to a wire elevating / lowering drive unit having a level detection unit. A wire free fall operation part is interposed between the weight and the wire elevating and lowering drive part, and the wire free fall operation part is composed of upper and lower wire holders and a wire pulling roller located between them. It is intended to provide a level measurement and hanging suspension device.

(Operation) The wire elevating and lowering drive unit lowers the wire with the weight attached to the tip end at a low speed, and the length of the wire causes
After performing the level measurement, wire about the length of
The wire free fall operation unit causes the wire to freely fall, and the hanging weight is destroyed by the weight without affecting the wire elevating and lowering drive unit.

(Embodiment) In the figure, a level measuring device 3 is composed of a sounding type level meter having a wire 1, a weight 2, a level detecting section 5, and a wire lifting drive section 6, and a wire free-fall operating section 7. To do.

First, at the time of level measurement, the wire lifting drive unit 6
The wire 1 is hung at a low speed, the weight 2 is brought into contact with the granular material level 8, and the length of the wire 1 at that time is determined by the level detection unit 5.
Then, the powder level 8 is measured. However, since it is not known whether or not the level 8 of the granular material at the time of this measurement is that at the time of the hanging phenomenon, the wire 1 is lifted by the wire elevating and lowering drive unit 6 in an appropriate amount. Then, this time, by operating the wire free operating portion 7, the wire 1 is allowed to fall freely and the weight 2 is caused to collide with the granular material level 8. Thus, the hanging 4 is destroyed by the impact force of the weight 2.

By repeating the above operation a plurality of times as necessary, and confirming that the level 8 of powder and granules is stable and the hanging has been destroyed to a desired degree, it is possible to measure the correct level 8 of powder and granules that is not in the hanging state. You can

In the above-mentioned configuration, the weight 2 may have any impact resistance so as not to be deformed even when it is collided with the powder or granular material level 8.
When it is used in an apparatus that generates high heat such as a melting furnace, it may be appropriately configured, for example, by using a material having a small coefficient of thermal expansion and excellent heat resistance.

Further, the wire elevating / lowering drive unit 6 can be easily configured by a reversible motor or the like whose rotation direction can be freely changed.

Next, as shown in FIG.
A pair of wire holders 9a and 9b are provided on the upper side and the lower side, respectively.
A pulling roller 10 that can move up and down and a fixed roller 11 that serves as an up and down fulcrum of the wire 1 are provided. When the level is measured, the wire free-fall operation section 7 having the above structure opens both the wire holders 9a and 9b, moves the pulling roller 10 to the left, and pulls the pulling roller 10 away from the wire 1 to move the wire lifting drive section 6 By wire 1
To slow down. On the other hand, at the time of suspension breakage, with the weight 2 in contact with the granular material level 8, the upper wire holder 9a is closed to restrain the wire 1, and the pulling roller 10 is moved to the right to remove the wire 1. After lifting and then closing the lower wire holder 9b, the pulling roller 10 is returned to the original position on the left side again, and then the lower wire holder 9b is closed.
Is released, and the wire 1 and the weight 2 are lowered by free fall. At this time, by appropriately adjusting the length of the wire 1 below the upper wire holder 9a, it is possible to prevent the weight 2 from excessively sinking below the granular material level 8, and By adjusting the amount of movement of the pulling roller 10 to the right, the drop height of the weight 2 can be adjusted, so that the impact force at the time of a collision can be easily changed.

In addition, the wire free-fall operation unit 7 can be configured by a speed gear, a clutch, or the like.

(Effects of the invention) As described above, the present invention destroys the hanging of the hanging body of the level measuring instrument itself without affecting the wire elevating and lowering driving unit, so that it is necessary to measure the level when necessary. Can be destroyed. For this reason, it is not necessary to manually monitor the hanging phenomenon or to suspend and destroy the hanging, and the level corresponding to the accumulated amount of powder is always measured correctly in various devices such as melting furnaces and silos that accumulate powder. The effect is that you can do it. Therefore, when the present invention is applied, there is an effect that the steps from taking-out to loading of the granular material in such various devices can be easily automated.

[Brief description of drawings]

All the drawings correspond to the embodiment of the present invention. FIG. 1 is a schematic overall explanatory view, and FIG. 2 is a diagram illustrating in detail an example of a wire lifting speed adjusting mechanism. Reference numeral 1 ... Wire, 2 ... Weight, 3 ... Level measuring device, 4 ... Shelving, 5 ... Level detecting unit, 6 ... Wire lifting drive unit, 7 ...
Wire free fall operation part, 8 ... Granule level, 9 (a, b)
… Wire holder, 10… Tension roller, 11… Fixed roller.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoichi Mori, 2-11-2 Kajigaya, Takatsu-ku, Kawasaki-shi, Kanagawa Prefecture (72) Motohide Miyasaka 2-14 Usagiano-cho, Kita-ku, Osaka-shi, Osaka Kansai Automation Corporation (56) Reference JP-A-59-142980 (JP, A) Actually opened 58-154190 (JP, U) Actually opened 51-31276 (JP, U)

Claims (1)

[Claims] 1. A wire lifting and lowering drive unit having a level detector is attached to the other end of a wire having a weight attached to its tip, and a free wire is dropped between the weight and the wire lifting and lowering drive unit. An apparatus for leveling and suspending and breaking, wherein an operation section is interposed, and the wire / wire free-fall operation section is composed of upper and lower wire holders and a wire pulling roller located between them.