High speed pickling device and high speed pickling method

In a high speed pickling device causing a thin plate to travel in acid fluid and removing through pickling oxidized scales which are formed on the surfaces of the thin plate, the improvement comprising:

• a plurality of weir members which dam wakes of said acid fluid flowing along the surfaces of the thin plate over substantially an entire width of the thin plate, said weir members being provided in the traveling direction of said thin plate with a predetermined interval and close to said thin plate, and
• a plurality grill members which suppress a lateral flow of the acid fluid flowing along the weir members and which are provided across the plurality of said weir members.

In a high speed pickling device for causing a thin plate to travel in acid fluid and removing through pickling oxidized scales which are formed on the surfaces of the thin plate, the improvement comprising:

• a plurality of weir members which dam wakes of said acid fluid flowing along the surfaces of the thin plate over substantially an entire width of the thin plate, said weir members being provided in the traveling direction of said thin plate with a predetermined interval and substantially close to said thin plate, and
• passageway walls for providing passageways for said thin plate, said passageway walls arranged between a plurality of said weir members and located further away from said thin plate than said weir members, and forming passageways with portions located at the inlet side and at the outlet side of the weir members and which are open, said portions having drain holes and feed holes for the acid fluid.

In a high speed pickling device for causing a thin plate to travel in acid fluid and removing through pickling oxidized scales which are formed on the surfaces of the thin plate, the improvement comprising:

• a plurality of weir members which dam wakes of said acid fluid flowing along the surfaces of the thin plate over substantially an entire width of the thin plate, said weir members being provided in the traveling direction of said thin plate with a predetermined interval and substantially close to said thin plate, and
• a tank for accommodating said acid fluid, a plurality of partition means which divide said tank into a plurality of cells and each including an opening through which said thin plate passes, acid fluid supply means connected to a downstream side cell among the plurality of said cells in the traveling direction of said thin plate and acid fluid draining means connected to an upstream side cell, wherein a plurality of said weir members are disposed respectively in a plurality of said cells, and the height of the plurality of said partition means successively increases from upstream side to downstream side in the traveling direction of said thin plate.

In a high speed pickling device for causing a thin plate to travel in acid fluid and removing through pickling oxidized scales which are formed on the surfaces of the thin plate, the improvement comprising:

• first means for damming wakes of said acid fluid flowing along the surfaces of the thin plate over substantially an entire width of the thin plate at a plurality of places in the traveling direction of said thin plate and stripping off the acid fluid from the surfaces of the thin plate, and allowing sucking of fresh acid fluid onto the surfaces at the downstream side immediately thereafter along with the traveling of said thin plate.

In a high speed pickling device for causing a thin plate to travel in acid fluid and removing through pickling oxidized scales which are formed on the surfaces of the thin plate, the improvement comprising:

• positioning weir members close to the surfaces of said thin plate for damming and stripping off wakes of said acid fluid flowing along the surface of said thin plate at inlet sides of said weir members, thereby causing said acid fluid to be deflected in the opposite direction away from the thin plate, and fresh acid fluid to be sucked onto the surface of said thin plate at outlet sides of said weir members along with the traveling of said thin plate.

In a high speed pickling method for causing a thin plate to travel in acid fluid and removing through pickling oxidized scales which are formed on the surfaces of the thin plate, the improvement comprising:

• positioning weir members close to the surfaces of said thin plate, and members which cross to said weir members are provided, damming and stripping off wakes of said acid fluid flowing along the surface of said thin plate at the inlet sides of these weir members, deflecting said acid fluid in the opposite direction away from the thin plate, sucking fresh acid fluid is onto the surface of said thin plate at the outlet sides of said weir members along with the traveling os said thin plate, and
• suppressing a lateral flow of said acid fluid which is dammed at the front faces of said weir members.

A high speed pickling device for pickling a plate in acid fluid to remove oxidized scales from the surfaces of the plate, comprising:

• a tank in which acid fluid is supplied and the plate is passed in a traveling direction, the passing of the plate through the acid fluid creating wakes along the surfaces of the plate;
• a plurality of weir members that dam said wakes, said weir members being spaced in said tank at intervals along the traveling direction.