JPS61262064A - Dipped electromagnetic pump - Google Patents

Abstract

PURPOSE:To enable molten metal at a low position to e hoisted and facilitate the replacing work of a fire-proof pipe, by setting inductors horizontally on the bottom section of the protective fire-proof material of W-shaped cross section, and by combining the material with a separate fire-proof pipe. CONSTITUTION:The cross section of inductor-protecting fire-proof material 2a is formed almost in a W-shape with an upwardly concaved section on the central section of the bottom section. On the bottom section of the both sides of the inductor-protecting fire-proof material 2a, a pair of inductors 1a re horizontally set. Into the concave section on the bottom section of the inductor- protecting fire-proof material 2a, a fire-proof pipe 3a formed as a separate body different from the fire-proof material 2a is inserted, and through a molten- metal-passing hole 4a formed inside the pipe 3a, molten metal is hoisted. As the result, the lowest action level of the electromagnetic induction force can be lowered, and molten metal at a low position can be hoisted. The fire-proof pip 3a can be easily replaced.

Description

[Detailed Description of the Invention] (Industrial Application Field) In a submerged electromagnetic pump that is immersed in molten metal (hereinafter referred to as molten metal) and pulls up the molten metal using electromagnetic force, the mounting structure of the fireproof pipe through which the molten metal passes has been improved. This invention relates to an immersion type electromagnetic pump that makes it possible to pull up molten metal from the bottom as much as possible, and that makes it easy to replace the fireproof tube.

(Prior Art) The configuration of a conventional immersion type electromagnetic pump will be explained with reference to FIG. In the figure, 1 is an inductor, an electromagnetic force generator made of a coil, 2 is a refractory material for protecting the inductor, 3 is a fireproof tube, and 4 is an inductor.
is a molten metal passage hole through which molten metal passes inside the fireproof pipe 3, LL
indicates the surface of the molten metal. In the conventional configuration, the inductor 1 is used vertically to obtain thrust in the vertical direction, the molten metal passage hole 4 is also vertical, and the refractory tube 3 is generally pulled up vertically from the center of the inductor-protecting refractory material 2. This point is the same whether the inductor 1 is circular or flat. In addition, the fireproof tube 3 may have a double structure inside and outside, and another fireproof tube may be used on the inside to facilitate replacement. In either case, the refractory tube 3 and the inductor protecting refractory material 2 are generally integrated.

(Problems to be Solved by the Invention) In the conventional configuration as described above, the height of the molten metal is the height that can be raised by the inductive action of the inductor 1, that is, the height is approximately 1/3 of the height of the inductor 1. (shown in Figure 3H), and the molten metal cannot be pulled up if the height of the molten metal is less than La-La shown in Figure 3.

Also, when replacing the fireproof tube 3, only the upper and lower parts are open.

Since the fireproof tube 3 and the inductor protection fireproof material 2 are in close contact with each other in the surrounding area, replacement work is difficult.

The present invention aims to eliminate the above-mentioned drawbacks in an electromagnetic pump equipped with a flat inductor, to make it possible to pull up molten metal from the bottom as much as possible, and to facilitate the replacement of large pipes. It is something to do.

(Means for solving the problem) As shown in FIGS. 1 and 2 corresponding to the embodiment, an inductor 1a is covered with an inductor protective refractory material 2a having a substantially W-shaped cross section.
Placed horizontally at the bottom on both sides inside.

Insert the refractory tube 3a from the bottom of the inverted U-shaped center of the inductor protective refractory material 2a, and remove the inductor 1a and the inductor protective refractory material 2.
a and the fireproof pipe 3a are constructed separately and independently.

(Function) Inductor 1st - Since it is placed horizontally at the bottom, inductor 1a
The height of is low, so the minimum height at which electromagnetic induction works is low. Moreover, the refractory tube 3a has inductors 1a on both sides.
Since it is sandwiched between the two, it has the same effect of pulling up the molten metal even when it is horizontal as when it is vertical. Furthermore, since the lower part of the fireproof tube 3a is open, replacement work is easy.

(Embodiment) FIG. 1 shows a front sectional view of an embodiment of the present invention, and FIG. 2 shows a side sectional view of the embodiment of FIG. 1. In both figures, components equivalent to those of the conventional electromagnetic pump shown in FIG. 3 are indicated by the same reference numerals with a suffix a added thereto. That is, la is an inductor, and 2a is a refractory material for protecting the inductor.

3a is a fireproof pipe 14 & is a molten metal passage hole. The inductor protection refractory material 2a has a substantially W-shaped cross section and protects the inductor 1a horizontally arranged at the bottom of both sides of the interior.

The refractory tube 3a is inserted into the inverted U-shaped bottom space at the center of the inductor-protecting refractory material 2a, and its end rises vertically as indicated by 3b to take out the molten metal.

(Effects of the Invention) Since the inductor 1a is arranged horizontally and the refractory tube 3a is arranged at the bottom, the minimum action height of the electromagnetic induction force is lowered, and therefore the required height of the molten metal is lowered, and the entire height from the bottom is lowered. It is possible to pull up the molten metal.Furthermore, the refractory pipe 3a is installed separately from the inductor protective refractory material 2a, and the lower part is open, and the vertical portion 3b is also independent of the inductor protective refractory material 2a. Therefore, the work of replacing the fireproof pipe becomes extremely easy.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of an embodiment of the present invention, FIG. 2 is a side sectional view of the embodiment of FIG. 1, and FIG. 3 is a front sectional view of a conventional immersion type electromagnetic pump. 1a: Inductor. 2a: Inductor protection refractory material. 3a: Fireproof pipe.

Claims (1)

[Claims] 1. The inductor (1a) is placed horizontally at the bottom of both sides of the inductor protective refractory material (2a), which has a substantially W-shaped cross section, and the refractory tube (3a) is placed inside the inductor protective refractory material (2a). central inverted U
An immersion type electromagnetic pump inserted from the bottom of the letter shape, characterized in that an inductor (1a), an inductor protection refractory material (2a), and a refractory tube (3a) are constructed separately and independently.