Cleaning and liquid contact with solids – Apparatus – Sequential work treating receptacles or stations with means...
Patent
1990-05-29
1992-06-09
Stinson, Frankie L.
Cleaning and liquid contact with solids
Apparatus
Sequential work treating receptacles or stations with means...
134122R, 134199, 134181, 134102, 427349, 239390, B08B 302
Patent
active
051198487
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a two-fluid injecting apparatus, and more particularly to a two-fluid injecting apparatus for mixing and injecting air and various treatment fluids on the surface of a strip to be treated, such as steel strip, plastic or paper.
This invention also relates to a manufacturing apparatus of minimized spangle molten plated steel plate.
DESCRIPTION OF THE PRIOR ART
A typical prior art apparatus is disclosed, for example, in Japanese Laid-Open Patent Pub. 137628/1976, in which a pair of spangle removing apparatus are disposed across a strip in a casing having a passage for a steel strip running from bottom to top while passing through the plating bath. In this apparatus, air headers elongated in the strip widthwise direction, water headers elongated in the strip widthwise direction, and multiple branch pipes extending in the vertical direction are disposed at equal intervals along the strip widthwise direction, and nozzles are attached to these branch pipes.
In this prior art, since the intervals between the nozzles are narrow, it is very difficult to replace the nozzles when clogged. This nozzle replacing job is done by slowing down the strip running speed. As a result the working efficiency is lowered, defective products may be produced, and steam is blown out from nozzles such that the working environment becomes extremely impaired.
Besides, in the prior art, there are many constituent elements, and the size is increased, the weight is increased, and maintenance is troublesome.
In order to solve the above problems, it is a primary object of this invention to present an injecting apparatus which is light and compact, and arranged such that a clogged nozzle can be easily replaced, as well as a manufacturing apparatus of minimized spangle molten plated steel plate which utilizes such injecting apparatus.
SUMMARY OF THE INVENTION
To achieve the above object, a two-fluid injecting apparatus of this invention comprises:
a first elongated header which extends in a straight line and is supplied with a first fluid;
a second elongated header which extends along the first header, is fixed to a first side of the header, and is supplied with a second fluid; plural nozzle lead-in members penetrating from a second side of the first header to the first side of the first header and having a first path for leading the first fluid in the first header and a second path for leading the second fluid in the second header; and
a nozzle, for mixing and injecting the first fluid and the second fluid, detachably installed in the nozzle lead-in member, and having passages individually communicating with the first and second paths.
According to the invention, the first fluid supplied to the first header is lead through the first path to a passage provided in the nozzle. The second fluid supplied to the second header is lead through the second path of the nozzle lead-in member to the passage provided in the nozzle. Since the passage communicates with the first and second paths individually, the first and second fluids supplied are mixed and injected from the nozzle. When the nozzle is clogged, the first and second headers can be removed and the clogged nozzle, can be replaced with a new one, or the headers can be replaced immediately with spare headers provided with a nozzle which is not clogged.
According to the invention, the first header which leads the first fluid and the second header which leads the second fluid are generally connected so that if the nozzle is clogged, it is easy to take out the headers and replace the nozzle with a spare one, which enables prompt replacement work, a reduction in the work required for maintenance, and an improvement in efficiency. Since it is not necessary to provide a branch tube in each respective nozzle, the construction may be simplified and light and compact.
In a preferred embodiment of this invention, in the nozzle lead-in members, plural first paths are formed on the outer circumference of the second path and are spaced apart in the peri
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Patent Abstracts of Japan, vol. 4, No. 61 (C-9)[543 , May 8, 1980.
Patent Abstracts of Japan, vol. 7, No. 69 (C-158)[1214], Mar. 23, 1983.
Kawano Hidekazu
Kishi Kuniaki
Kobuchi Masakazu
Muguruma Nobuyoshi
Takagi Kazuo
Nisshin Steel Co. Ltd.
Stinson Frankie L.
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