JP2537493Y2 - Jet pickling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a jet pickling apparatus for continuously pickling a steel strip with a jet pickling liquid.

<Prior Art> FIGS. 4 and 5 show a conventional jet pickling apparatus.

As shown in FIGS. 4 and 5, the apparatus main body 11 has a box shape with an open upper surface, and side walls 12 are provided on both sides in the running direction (the left-right direction in FIG. 4) of the steel strip 1 to form a processing tank 13. Is formed. In the apparatus main body 11, a drainage passage 14 is formed outside the side wall 12 along the running direction of the steel strip 1, and a liquid collecting chamber 15 is formed before and after the running direction of the steel strip 1. An opening 16a is formed in the side wall 12 so that the processing tank 13 and the drainage passage 14 communicate with each other, and an opening 16b is formed so that the drainage passage 14 and the liquid collection chamber 15 are formed.
Are in communication. Further, a drain pipe 17 is attached to the liquid collecting chamber 15, and the drain pipe 17 is connected to a circulation tank (not shown) having a pickling liquid circulation pump.

A cover 18 is provided on the upper surface of the
The cover 18 is joined to the upper portion of the side wall 12. A first nozzle header 19 is attached to the side surface of the cover 18 in the front side in the running direction of the strip 1, and second nozzle headers 20 and 21 are attached to the rear side. Each nozzle header 19, 20, 21 is connected to the circulation tank described above.

A plurality of skids 22 for supporting the strip 1 are attached to the bottom surface of the processing tank 13 of the apparatus body 11. Processing tank 13
A supply port 23 and a discharge port 24 for the steel strip 1 are formed before and after.

Thus, the steel strip 1 is supplied from the supply port 23 to the processing tank 13 composed of the apparatus main body 11 and the cover 18, and travels in the processing tank 13 while being supported by the plurality of skids 22. During running, the pickling solution 2 is injected from the nozzle headers 19, 20, and 21 to perform pickling on the upper and lower surfaces of the steel strip 1. The pickled steel strip 1 is discharged from the discharge port 24 to the outside.

At this time, the pickling liquid 2 jetted from each of the nozzle headers 19, 20, and 21 accumulates in the processing tank 13, and thereafter flows from the opening 16a to the drainage passage 14, and flows from the opening 16b to the liquid collecting chamber 15. Then, the pickling liquid 2 accumulated in the liquid collecting chamber 15 is returned to the circulation tank by the drain pipe 17.

<Problem to be Solved by the Invention> In the above-described conventional jet pickling apparatus, the cover 18 is mounted on the upper surface of the apparatus main body 11 and is joined to the upper part of the side wall 12 in a free state. .

At the time of pickling the strip 1, for example, when the strip 1 runs at a high speed of about 400 mm / min in a shallow processing tank 13 having a liquid level of about 200 mm, the static pressure inside the processing tank 13 increases by about 500 mmHg. I will. Then, the cover 18 rises due to the increase in the pressure, and a gap is generated at the joint surface between the cover 18 and the side wall 12,
The pickling liquid 2 in the processing tank 13 flows out of the gap into the drainage path 14.

If the pickling liquid 2 flows out of the processing tank 13 in this manner, the amount of the pickling liquid 2 in the processing tank 13 decreases and the strip 1 cannot be sufficiently cleaned. ,
A large amount of pickling liquid 2 is supplied from each nozzle header 19, 20, 21 to the processing tank 13.
And the pump for circulating the pickling liquid in the circulating tank is increased in size by increasing its capacity. As a result, there is a problem that power consumption is increased and mechanical efficiency is not good.

The present invention solves such a problem,
An object of the present invention is to provide a jet pickling apparatus which prevents outflow of a pickling solution from a treatment tank and achieves efficient work.

<Means for Solving the Problems> A jet pickling apparatus according to the present invention for achieving the above-mentioned object has a device body in which a processing tank is formed by arranging side walls on both sides in a running direction of a strip. A jet pickling apparatus comprising a cover attached to an upper portion of the side wall so as to cover an upper surface of the apparatus main body, and a nozzle header provided in the apparatus main body and jetting a pickling liquid to the steel strip. A long groove is formed in one of the opposed joints between the side wall and the cover, a seal member is mounted in the long groove, and a pressing member for pressing the cover against the side wall is provided. is there.

<Operation> A sealing member is attached to the joint between the side wall of the apparatus body and the cover, and the cover is pressed against the side wall by the pressing member, so that the running of the steel strip is in a high-speed state and the pressure in the processing tank is increased. Even if the acid rises, unnecessary outflow of the pickling solution from the treatment tank is prevented.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

1 to 3 show a jet pickling apparatus according to an embodiment of the present invention. Note that members having the same functions as those in the related art are denoted by the same reference numerals, and redundant description will be omitted.

As shown in FIG. 1 and FIG.
Side walls 12 are provided on both sides in the running direction of the steel strip 1 to form a treatment tank 13, a drainage path 14 is formed outside the side walls 12, and a liquid collecting chamber 15 is formed before and after the strip 1 in the running direction. I have. The treatment tank 13 and the drainage path 14 communicate with each other, the drainage path 14 communicates with the liquid collection chamber 15, and the liquid collection chamber 15 is provided with a drainage pipe 17 connected to a circulation tank (not shown). .

The upper surface of the device main body 11 is covered so as to cover them.
31 is mounted. This cover 31 is joined to the upper part of the side wall 31. As shown in detail in FIG.
Long grooves 32 are respectively formed on the joint surface with 12, and the sealing member
33 is installed. Further, a reinforcing beam 34 is fixed to an upper portion of the cover 31, and a hydraulic cylinder 35 as a pressing member for pressing the cover 31 against the side wall 12 is connected to the beam 34.

Therefore, by pressing the cover 31 against the apparatus main body 11 via the beam 34 by the hydraulic cylinder 35, the seal member 33
Thereby, the cover 31 and the side wall 12 adhere to each other without any gap.

A first nozzle header 19 and second nozzle headers 20 and 21 are attached to the side surface of the cover 31 in the direction in which the strip 1 travels.

The strip 1 is supplied to the processing tank 13 composed of the apparatus main body 11 and the cover 31, and the pickling liquid 2 is jetted from the nozzle headers 19, 20, 21 while traveling in the processing tank 13. Being done
The upper and lower surfaces are pickled. Then, the strip steel 1 that has been pickled is discharged to the outside.

At this time, the cover 31 is pressed against the side wall 12 of the apparatus main body 11 by the hydraulic cylinder 35, and the cover 31 and the side wall 12 are in close contact with each other by the seal member 33 interposed at the joint between the two. Sealed to the side wall 12 without any gap. Therefore, the running speed of the strip 1 becomes high and the processing tank
Even if the pressure in 13 rises, cover 31 does not rise, and unnecessary outflow of pickling liquid 2 from treatment tank 13 is prevented.

Thereafter, the pickling liquid 2 jetted from each of the nozzle headers 19, 20, and 21 accumulates in the processing tank 13, flows from the drain passage 14 to the collecting chamber 15, and is returned to the circulation tank by the drain pipe 17.

<Effects of the Invention> As described above in detail with the embodiments, according to the jet pickling apparatus of the present invention, the cover having the nozzle header for spraying the pickling liquid to the apparatus main body having the processing tank formed by the side wall. A long groove is formed in one of the joints between the side wall and the cover, and a sealing member is attached to the long groove and a pressing member for pressing the cover against the side wall is provided. It is pressed against the side wall of the main body, and the joining surface is sealed without gaps by the seal member. Therefore, even if the pressure in the processing tank increases, the cover does not float even when the pressure in the processing tank increases, and unnecessary pickling liquid from the processing tank is used. Outflow can be prevented. As a result, it is not necessary to circulate the pickling liquid more than necessary, and it is possible to improve the working efficiency of the strip steel pickling work by reducing the power cost.

[Brief description of the drawings]

1 is a longitudinal sectional view of a jet pickling apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is an enlarged sectional view of a joint between a cover and a side wall, FIG. 4 is a longitudinal sectional view of a conventional jet pickling apparatus, and FIG. 5 is a sectional view taken along line VV of FIG. In the drawing, 1 is a steel strip, 2 is an acid pickling solution, 11 is an apparatus main body, 12 is a side wall, 13 is a processing tank, 19 is a first nozzle header, 20 and 21 are second nozzle headers, 31 is a cover, and 33 is a cover. The seal member 35 is a hydraulic cylinder (pressing member).

Continuing on the front page (72) Inventor Takeshi Tanaka 2325-17, Hiraoka-cho, Arai, Kakogawa-shi, Hyogo (72) Inventor Yoshinori Matsumoto 1007 Futamata, Hiraoka-cho, Kakogawa-shi, Hyogo C2-202 (72) Inventor Yoshinobu Nakane, Kakogawa, Hyogo 1007 Futamata, Hiraoka-cho, Ichigo C1-307 (72) The inventor 1012 Futamata, Hiraoka-cho, Kakogawa-shi, Hyogo Pref.

Claims (1)

(57) [Scope of request for utility model registration] An apparatus body having a processing tank formed by arranging side walls on both sides in a running direction of a steel strip, and a cover attached to an upper portion of the side wall so as to cover an upper surface of the apparatus body. In a jet pickling apparatus provided with a nozzle header that is provided in the apparatus main body and injects the pickling liquid to the steel strip, a long groove is formed in one of the opposed joints between the side wall and the cover. A jet pickling apparatus, wherein a sealing member is mounted on the long groove and a pressing member for pressing the cover against the side wall is provided.