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Sliding nozzle apparatus

a technology of sliding nozzles and nozzles, which is applied in the direction of casting apparatus, melt-holding vessels, manufacturing tools, etc., can solve the problems of placing a burden on a worker, affecting work efficiency, and affecting the work efficiency of workers, so as to simplify the work of opening and manipulation, and improve work efficiency.

Inactive Publication Date: 2020-12-17
KROSAKI HARIMA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention allows for easy opening and closing of sliding metal frame retaining sections through a simple manipulation. This improves work efficiency and makes the process more labor-saving, especially when using a sliding nozzle apparatus for plate replacement. The interlocking mechanism allows for easy operation of both upper and lower sliding metal frame retaining sections in any state, further simplifying the work.

Problems solved by technology

This places a burden on a worker.
Further, even if the upper sliding metal plate retaining section is successfully opened, it is likely to be swung to its original closed position by the own weight.
Further, a lower one of the sliding metal plate retaining sections is likely to be automatically swung and opened by its own weight.
This is undesirable for safety reasons.
This places a burden on a worker.
This work also involves a problem that the lower sliding metal plate retaining section is likely to be returned to its open position by the own weight.
In order to avoid such swinging movements of the sliding metal plate retaining sections due to their own weights, each of the sliding metal plate retaining sections has to be fixed by using a hook or the like, leading to a problem of an increase in time and effort for the plate replacement work.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0030]The first embodiment is one example where the present invention is applied to the sliding nozzle apparatus disclosed in the Parent Document 1 (as shown in FIGS. 8 and 9 of this application) as a basic conventional structure. In the conventional structure, each of a pair of sliding metal frame retaining sections has been pivotally supported by a pin 22. In this embodiment, as shown in FIGS. 1 to 3, instead of the pin, a shaft 5a is integrated with a lower sliding metal frame retaining section 4a, and is rotatably supported by two shaft supporting portions 6 of a fixed metal frame 2. Specifically, this shaft 5a is integrated with a portal arm 41a of the lower sliding metal frame retaining section 4a by two screws 61. Further, a first link member 7a is provided at one end of the shaft 5a.

[0031]Similarly, a shaft 5b is integrated with an upper sliding metal frame retaining section 4b, and a second link member 7b is provided at one end of the shaft 5b.

[0032]Specifically, each of ...

second embodiment

[0044]The second embodiment is one example where a link bar comprising a third link member is used as the link means.

[0045]In the second embodiment, for example, in a situation where the link bar 10 in the first embodiment cannot be attached due to the presence of a protruding object on a lateral face of the fixed metal frame 2, the third link member is used to avoid the protruding object.

[0046]Specifically, as shown in FIG. 6, an intermediate rotary member 11 serving as the third link member is rotatably provided on a central region of a lateral face of the fixed metal frame 2 on the side of one of the opposed short edges thereof, and respective one ends of a first link bar 11a and a second link bar 11b are pivotally coupled to the intermediate rotary member 11, independently. The other end of the first link bar 11a is pivotally coupled to a first link member 7a, and the other end of the second link bar 11b is pivotally coupled to a second link member 7b. Here, the first link bar 1...

third embodiment

[0048]Referring to FIG. 7, as with the first embodiment, a disc-shaped first link member 7a and a disc-shaped second link member 7b are attached, respectively, to a pair of shafts 5a, 5b, and each of a pair of pins 71a, 71b is provided on a respective one of the first and second link members 7a, 7b to protrude outwardly, at a position eccentric with respect to a central axis of the corresponding shaft, to serve as a coupling portion. Then, one ends of a first link bar 13a and a second link bar 13b are pivotally attached, respectively, to the pin 71a and the pin 71b.

[0049]Further, a first gear 12a and a second gear 12b are rotatably supported on a lateral face of the fixed metal frame on the side of one of the opposed short edges thereof, such that they are meshed with each other. The first and second gears 12a, 12b are provided, respectively, with pins 121a, 121b at eccentric positions. The other ends of the first and second link bars 13a, 13b are pivotally coupled, respectively, t...

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Abstract

A sliding nozzle apparatus includes a pair of sliding metal frame retaining sections provided on respective sides of opposed long edges of a fixed metal frame in an openable and closable manner. The sliding nozzle apparatus also includes: a pair of shafts each integrated with one of the retaining sections and each rotatably supported on a corresponding one of the sides of the opposed long edges of the metal frame; first and second link members provided, respectively, at one end of the shafts of the sliding metal frame retaining sections; and a link element coupling the first and second link members together, such that, when one of the retaining sections is manually opened or closed, the shaft of the other retaining section is reversely rotated to cause the other retaining section to be simultaneously opened or closed.

Description

TECHNICAL FIELD[0001]The present invention relates to a sliding nozzle apparatus used for controlling the flow rate of molten metal, and more particularly to a sliding nozzle apparatus comprising a pair of sliding metal frame retaining sections provided on respective sides of opposed long edges of a fixed metal frame in an openable and closable manner.BACKGROUND ART[0002]A sliding nozzle apparatus is attached to, e.g., a molten steel outlet of a ladle, wherein it is configured such that, in a state in which two, upper and lower, refractory plates each having a respective one of two nozzle hole portions are superimposed on each other, with a surface pressure being loaded therebetween, the lower plate is linearly slid with respect to the upper plate to change the degree of opening between the nozzle hole portions, thereby controlling the flow rate of molten steel (molten metal).[0003]Generally, this type of sliding nozzle apparatus comprises: a fixed metal frame which holds an upper p...

Claims

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Application Information

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IPC IPC(8): B22D11/10B22D41/34
CPCB22D41/34B22D11/10B22D41/24B22D41/38
Inventor IMAHASE, TOSHIHIROFUNATO, JUNICHI
Owner KROSAKI HARIMA CORP