JP4973250B2 - Bottom dross pumping device and bottom dross pump - Google Patents

Description

  The present invention relates to a hot dip galvanizing technology for protecting metal materials such as steel plates and steel pipes from corrosion such as rust over a long period of time. In particular, the bottom dross collected at the bottom of the hot dip galvanizing pot is pumped and collected. The present invention relates to a pumping device and a bottom dross pumping tool applied thereto.

In the conventional hot dip galvanizing treatment, a metal film to be treated such as a steel plate or a steel pipe is immersed in a hot dip galvanizing pot in which hot dip zinc is stored to form a zinc coating on the surface thereof. However, in this treatment, the iron (Fe) dissolved from the metal material to be treated reacts with the molten zinc (Zn) to generate a compound containing FeZn ₇ as a main component. It accumulates in and gradually accumulates.

If this bottom dross adheres to the surface of the galvanized steel sheet, it becomes a defective product called “dross bump” and cannot be shipped as a product. The pump is used to pump up and collect the waste.
However, the bottom dross accumulated at the bottom of the pot becomes an Fe—Zn alloy lump after a predetermined time, and cannot be easily recovered by the pump.

  Therefore, conventionally, for example, as shown in FIG. 5, a tool called dross scoop S or the like is suspended from a hook F of an overhead crane provided on the pot P, and the dross scoop S is immersed in the pot P. By moving the dross scoop S along the bottom in a state where it is laid on the bottom, the bottom dross D and the metal lump accumulated in the bottom of the pot P are scraped and collected.

Moreover, in the following Patent Documents 1 and 2, a child carriage that moves in the width direction (Y-axis direction) of the pot is provided on a parent carriage that includes a mechanism that moves in the longitudinal direction (X-axis direction) of the hot-dip galvanizing pot. In addition, a dross recovery device equipped with a bucket that moves in the vertical direction (Z-axis) on the slave cart is installed on the hot dip galvanizing pot, and the dross recovery device excavates the bottom dross accumulated in the bottom of the pot. , Collect and pay out.
Japanese Patent Laid-Open No. 10-60611 JP-A-10-121216

By the way, when the bottom dross D accumulated in the bottom of the pot P and its metal lump are scraped and collected using the dross scoop S as described above, the bottom dross D scraped by the dross scoop S is further removed from the dross scoop S. It is necessary to transfer to a dross collection bag installed on the upper deck of the pot P.
However, this transfer operation is performed manually by about 2 to 3 workers who have a special scraping tool such as a scoop, so the operation is not easy and the temperature is high. There is also the risk of burns from molten metal scattering, and safety considerations are necessary.

Further, in the structure of the bottom dross scooping tool as described above, the tip of the dross scoop S slides along the surface layer portion of the bottom dross D, and the bottom dross D and its metal lump accumulated on the bottom of the pot P are surely scraped off. There was something I couldn't do.
On the other hand, the methods described in Patent Documents 1 and 2 described above have a problem in that a large amount of equipment costs are required because it is necessary to separately prepare a dedicated dross recovery device.

In addition, there are safety fences and collection bags around the pots of existing hot dip galvanizing equipment, so there is no space. In many cases, it cannot be added to the equipment.
Therefore, the present invention has been devised in order to effectively solve such problems, and its main purpose is to scrape the bottom dross and its metal mass accumulated in the bottom of the hot dip galvanizing pot safely and reliably. The present invention provides a novel bottom dross pumping device that can be collected and collected (pumped up), and a bottom dross pumping tool applied thereto.

  Another object of the present invention is to provide a novel bottom dross pumping device that can be easily applied to existing hot dip galvanizing equipment and a bottom dross pumping tool applied thereto.

In order to solve the above-mentioned problem, the invention of claim 1
A bottom dross pump that pumps up the bottom dross that is immersed in the hot dip galvanizing pot and collects the bottom dross pumped by the bottom dross pump that lifts and moves the bottom dross pump. In a bottom dross pumping device having a dross recovery container
The bottom dross pumping tool includes a vertical arm suspended substantially vertically from an overhead crane on the hot dip galvanizing pot, a scraping portion extending in a substantially horizontal direction from a lower end portion of the vertical arm, and the scraping portion or the A bottom dross pumping device comprising a tension line extending from the lower end side of the vertical arm to the hot dip galvanizing pot, and a protrusion protruding downward from the bottom of the scraping portion. It is.

The invention of claim 2
2. The bottom dross pumping device according to claim 1, further comprising a support column that engages with a protrusion on a bottom portion of the scraping portion of the bottom dross pumping tool in the vicinity of the dross collecting container.
The invention of claim 3
The bottom dross pumping device according to claim 2, wherein the vertical arm of the bottom dross pump includes an upper arm suspended on the overhead crane side and a lower arm coupled to a lower end of the upper arm, The lower arm is a bottom dross pumping device characterized in that the lower arm is swingably connected to the upper arm.

On the other hand, the invention of claim 4
In the pumping tool for pumping up the bottom dross immersed in the hot dip galvanizing pot and collected at the bottom thereof, a vertical arm suspended substantially vertically from the overhead crane on the hot dip galvanizing and a substantially horizontal from the lower end of the vertical arm A scraping portion extending in a direction, and a tension cable extending on the hot dip galvanizing pot from the scraping portion or the lower end side of the vertical arm, and below the scraping portion at the bottom thereof A bottom dross pump is provided with a protruding protrusion.

The invention of claim 5
The bottom dross pumping device according to claim 4, wherein the vertical arm includes an upper arm suspended from the overhead crane side and a lower arm connected to a lower end of the upper arm, The bottom dross pump is characterized by being connected to the upper arm in a swingable manner.

  According to the invention of claim 1, in short, since the bottom portion of the scraping portion of the bottom dross pumping tool is provided with a protrusion protruding downward from the bottom droop pumping tool, the bottom dross pumping tool is suspended by the overhead crane and the hot dip galvanizing pot When the head is immersed, the protrusion hits the bottom, so that the entire scraping portion is tilted and the tip is bitten into the bottom dross accumulated in the bottom.

Therefore, in this state, if the scraping portion or the pulling cable provided on the lower end side of the vertical arm is pulled and moved along the bottom of the hot dip galvanizing pot, the bottom dross and the metal lump can be reliably and efficiently removed. It can be scraped into the scraping section and recovered (pumped) into the dross recovery container.
In addition, since existing recovery equipment such as an overhead crane or a dross recovery container can be used as it is, it can be implemented at an extremely low cost compared to a case where a separate dross recovery device is separately prepared.

  In addition, according to the invention of claim 2, the bottom dross is pumped up as described above because the support column is provided in the vicinity of the dross recovery container and engages with the protrusion of the bottom of the bottom dross pumping device. After transporting the bottom dross pumping tool to the vicinity of the dross recovery container by an overhead crane, the bottom dross pumping tool is further moved to the dross recovery container side in a state where the column is engaged with the protrusion at the bottom of the scraping part. The whole pivots toward the dross collection container with the engaging portion as an axis.

As a result, the bottom dross or metal lump scraped into the scraping part slides down from the tip of the scraping part, so that the entire amount of the bottom dross or metal lump scraped can be collected (injected) into the dross collection container at once. it can.
Therefore, the conventional manual transfer work is not required, so that a great reduction in labor can be achieved and the safety of the work can be ensured.

  According to a third aspect of the present invention, the vertical arm of the bottom dross pump is composed of an upper arm and a lower arm, and the lower arm is swingably connected to the upper arm. Thus, the bottom dross and the metal lump scraped off can be more easily and reliably collected (input) into the dross collecting container. That is, when the bottom dross or metal lump scraped off as described above is recovered in the dross recovery container using the support provided in the vicinity of the dross recovery container, the protrusion at the bottom of the scraping portion of the bottom dross pumping tool is When the bottom dross pump is lowered with the column engaged, the lower arm of the bottom dross pump tilts with respect to the upper arm with the connecting portion as the axis, and the lower arm and the lower arm. Only the scraping portion provided at the lower end rotates toward the dross collection container with the engaging portion as an axis. As a result, the bottom dross and the metal lump scraped into the scraping portion by a simple operation of the overhead crane can be easily (removed) into the dross recovery container.

According to the invention of claim 4, by the same operation as that of the invention of claim 1, the bottom dross and the metal lump accumulated in the hot dip galvanizing pot are surely and efficiently scraped and pumped into the dross recovery container. Can be recovered.
Further, according to the invention of claim 5, the bottom dross and the metal lump scraped off by a simple operation can be easily (recovered) into the dross collection container by the same operation as that of the invention of claim 3. it can.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an embodiment of a bottom dross pumping device 100 according to the present invention.
As shown in the figure, this bottom dross pumping device 100 is suspended in a hot dip galvanizing pot P, a bottom dross pump 10 that pumps up a bottom dross D, a metal lump, and the like accumulated in the bottom, and this bottom dross pump 10 is lifted up and down. It mainly comprises an overhead crane 20 that moves down and a dross collection container 30 that collects the bottom dross pumped up by the bottom dross pumping tool 10.

  First, the bottom dross pumping tool 10 includes a vertical arm 11 suspended substantially vertically from the overhead crane 20, a scraping portion 12 provided at a lower end portion of the vertical arm 11, and a lower end portion of the vertical arm 11. It is comprised from the tension line 13 extended on the said hot-dip galvanizing pot P from the side.

  As shown in FIG. 2, the vertical arm 11 is composed of two members: an upper arm 11a suspended on the overhead crane 20 side and a lower arm 11b coupled to the lower end of the upper arm 11a. The lower arm 11b is swingably connected to the upper arm 11a. That is, as shown in FIG. 2, the lower end of the lower arm 11b and the upper end of the upper arm 11a are pin-coupled by a connecting pin 11c, and the lower arm 11b is connected to the hot dip galvanizing pot P with the connecting pin 11c as an axis. It can be swung (rotated) in the longitudinal direction. As will be described later, the upper arm 11a is lifted to the hook F of the overhead crane 20 via a hanging pin 11d, and the upper arm 11a side is also with the hook F or against the hook F. Thus, the hot dip galvanizing pot P can swing in the longitudinal direction or the width direction.

  The scraping portion 12 includes a bottom plate 12a extending horizontally from the lower end of the lower arm 11b constituting the vertical arm 11 toward the dross recovery container 30 side on the hot dip galvanizing pot P, and vertical from both sides of the bottom plate 12a. It is formed in a so-called dust removal shape composed of a pair of left and right side plates 12b, 12b provided so as to stand up and a back plate 12c located on the back side of the bottom plate 12a. The reinforcing member 11d connected to the lower end and the pair of brace members 11e and 11e supported obliquely from both sides are firmly attached to the lower end of the lower arm 11b so as not to be easily detached.

Further, as shown in FIG. 3, four protrusions 12d, 12d, 12d, and 12d each having a plate-like shape are provided on the bottom side of the scraping portion 12 and on the back side (back plate 12c side). Each is provided in parallel.
The tension cord 13 is made of a material having high tensile strength and heat resistance such as a metal chain or a metal wire, and one end thereof is fastened to a fastening piece 11 f on the lower end side of the vertical arm 11. At the same time, the other end side extends above the hot dip galvanizing pot P and can be gripped by an operator or the like.

  On the other hand, the overhead crane 20 includes a rail portion 21 that extends along the longitudinal direction of the hot dip galvanizing pot P, a carriage 22 that travels along the rail portion 21, and a hook F that suspends the bottom dross pump 10. The hoisting cable (metal chain or the like) 23 is composed of a winder 24 for winding and unwinding and a controller (not shown) for operating the hoisting cable (metal chain or the like) 23. An operator operating the controller hangs the hook F on the hook F. A bottom dross pumping operation as described later is performed by arbitrarily moving the lowered bottom dross pumping tool 10 up and down or horizontally.

On the other hand, the dross collection container 30 is a heat-resistant container for storing hot bottom dross and metal lump pumped by the bottom dross pumping tool 10 as shown in FIG. Therefore, it is installed on the upper deck 31 in the vicinity of the hot dip galvanizing pot P via a tray-like collection container mounting base 32.
Further, as shown in the drawing, in the vicinity of the dross recovery container 30 and on the hot dip galvanizing pot P side, the protrusions 12d, 12d, 12d, and 12d of the scraping portion 12 of the bottom dross pumping tool 10 are engaged. A support 33 is provided.

The column 33 is positioned slightly higher than the upper edge of the dross collection container 30 and extends parallel to the upper edge (in the drawing in the drawing), and the cross beam 33a is disposed on the collection container mounting 32 side. And a support leg 33b supported from the bottom, and as will be described later, by engaging the horizontal beam member 33a with the protrusions 12d, 12d, 12d, 12d of the bottom portion of the scraping portion 12 of the bottom dross pumping tool 10, The taken bottom dross D and the metal lump can be recovered (input) into the dross recovery container 30 more easily and reliably.
In addition, the code | symbol 40 is the handrail fence installed along the circumference | surroundings of the hot dip galvanizing pot P in FIG.

Next, an example of the bottom dross pumping work process at the bottom of the hot dip galvanizing pot P by the bottom dross pumping apparatus 100 according to the present invention having such a configuration will be described with reference mainly to FIG.
As shown in the figure, in order to scrape and collect the bottom dross D and its metal lump accumulated in the bottom of the hot dip galvanizing pot P, first, as shown in FIG. After the tool 10 is positioned above the longitudinal end of the hot dip galvanizing pot P, the bottom dross pumping tool 10 is lowered as it is, and the scraping portion 12 at the lower end thereof is immersed in the hot dip galvanizing.

Then, as shown in FIG. 4B, the protrusion 12d provided on the bottom surface side of the scraping portion 12 reaches the bottom portion of the bottom dross D, and the protrusion 12d hits the bottom portion. Is inclined to the tip side (in the direction of the dross collection container 30), and the scraping portion 12 has a posture such that the tip of the scraping portion 12 bites into the bottom dross D accumulated in the bottom portion.
And if it becomes such a state, while driving the overhead crane 20, the bottom dross pumping tool 10 will be slowly moved to the front end side (direction of the dross collection container 30), maintaining the attitude | position, and a worker Pulls the tension cord 13 from the top of the pot P, and moves the scraping portion 12 along the bottom of the pot P.

As a result, the bottom dross D and the metal lump accumulated in the bottom of the pot P are separated so as to be scraped up by the tip of the bottom plate 12a of the scraping portion 12, so that the bottom dross D and the metal lump are reliably and efficiently removed. It can be scraped off in the collecting part 12.
After that, if the bottom dross D and the metal lump accumulated in the bottom of the pot P in this way are scraped into the scraping portion 12, the hook of the overhead crane 20 as shown in FIGS. F is raised and the bottom dross pumping tool 10 is conveyed to the upper deck 31 side of the pot P. When the bottom dross pumping tool 10 is lifted and transported, the vertical arm 11 returns to the vertical state and the scraping unit 12 returns to the horizontal state as shown in the figure, so that the scraped bottom dross D and the metal block are removed from the scraping unit. Almost no spill from 12

Then, when the bottom dross pumping tool 10 is transported to the dross collection container 30 in this way, the projection 12d provided on the bottom surface side of the scraping portion 12 is used as the cross beam member 33a of the column 33 as shown in FIG. After that, the hook F of the overhead crane 20 is lowered vertically by a predetermined amount.
Then, as shown in the figure, the entire scraping portion 12 is rotated together with the lower arm 11b of the vertical arm 11 toward the distal end side with the transverse beam member 33a as an axis, whereby the bottom dross D and the metal lump in the scraping portion 12 are The entire amount of the scraping portion 12 is slipped down from the tip of the scraping portion 12 and is collected (injected) into the dross collecting container 30.

This eliminates the need to transfer the bottom dross D and the metal lump from the scraping section 12 to the dross collection container 30 that has been performed manually, thereby significantly reducing labor and Safety can be ensured. In addition, the transfer time can be drastically shortened.
When the bottom dross D and the metal lump are collected in the dross collection container 30 in this way, the overhead crane 20 is operated to bring the bottom dross pumping tool 10 back to its original position (FIG. 5A). By repeating the same operation several times after returning to the bottom, most of the bottom dross D and the metal lump accumulated at the bottom of the hot dip galvanizing pot P can be pumped and recovered safely and efficiently.

  Thus, according to the present invention, as described above, not only can the bottom dross D and the metal lump accumulated in the hot dip galvanizing pot P be reliably and efficiently scraped and efficiently recovered in the dross recovery container 30, Since existing facilities such as the overhead crane 20 and the dross collection container 30 can be used as they are, it can be implemented at an extremely low cost as compared with the case where a new dedicated dross collection device is separately purchased and installed.

  In the present embodiment, the four protrusions 12d, 12d, 12d, and 12d in the form of plate pieces are provided in parallel on the bottom surface side of the scraping portion 12 of the bottom dross pumping tool 10, but this protrusion 12d is provided in parallel. The number of is not limited to this embodiment, and it is sufficient that there is at least one. Further, the shape is not limited to the present embodiment as long as it can be easily engaged with the cross beam member 33a of the support 33, and may be other shapes such as a pin shape and a hook shape. .

1 is an overall view showing an embodiment of a bottom dross pumping device 100 according to the present invention. It is an upper surface side perspective view showing one embodiment of bottom dross pumping tool 10 concerning the present invention. It is a bottom side perspective view showing one embodiment of bottom dross pumping tool 10 concerning the present invention. It is a general view which shows an example of an effect | action of the bottom dross pumping apparatus 100 which concerns on this invention. It is explanatory drawing which shows an example of the conventional bottom dross pumping method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Bottom dross pumping device 10 ... Bottom dross pumping tool 11 ... Vertical arm 11a ... Upper arm 11b ... Lower arm 11c ... Connecting pin 12 ... Scraping part 12d ... Protrusion 13 ... Tensile cable 20 ... Overhead crane 30 ... Dross collection container 33 ... Post D ... Bottom dross (and its metal mass)
F ... Hook P ... Hot-dip galvanizing pot

Claims (5)

A bottom dross pump that pumps up the bottom dross that is immersed in the hot dip galvanizing pot and collects the bottom dross pumped by the bottom dross pump that lifts and moves the bottom dross pump. In a bottom dross pumping device having a dross recovery container
The bottom dross pumping tool includes a vertical arm suspended substantially vertically from an overhead crane on the hot dip galvanizing pot, a scraping portion extending in a substantially horizontal direction from a lower end portion of the vertical arm, and the scraping portion or the A bottom dross pumping device comprising a tension line extending from the lower end side of the vertical arm to the hot dip galvanizing pot, and a protrusion protruding downward from the bottom of the scraping portion. . The bottom dross pumping device according to claim 1,
A bottom dross pumping device comprising a column that engages with a protrusion on the bottom of the scraping portion of the bottom dross pumping tool in the vicinity of the dross collection container. The bottom dross pumping device according to claim 2,
The vertical arm of the bottom dross pump includes an upper arm suspended from the overhead crane and a lower arm connected to the lower end of the upper arm, and the lower arm swings relative to the upper arm. Bottom dross pumping device characterized by being connected freely. In the pumping tool that pumps up the bottom dross that has been immersed in the hot dip galvanizing pot and accumulated at the bottom,
A vertical arm suspended substantially vertically from an overhead crane on the hot-dip galvanizing pot, a scraping portion extending in a substantially horizontal direction from the lower end portion of the vertical arm, and the lower end side of the scraping portion or the vertical arm A bottom dross pumping device, characterized in that it has a tension line extending from above to the hot dip galvanizing pot, and a protrusion protruding downward from the bottom of the scraping portion. In the bottom dross pumping tool of Claim 4,
The vertical arm includes an upper arm suspended on the overhead crane side and a lower arm coupled to the lower end of the upper arm, and the lower arm is swingably coupled to the upper arm. Bottom dross pumping device characterized by being made.

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