JPS60204254A - Dip type electromagnetic pump - Google Patents

Abstract

PURPOSE:To prevent a melted material from entering an electromagnetic pump by providing an outer flange at the lower end of a circular pipe, securing the flange to the lower surface of a casing, thereby rigidly coupling the pipe with the casing. CONSTITUTION:An outer flange 23 is formed integrally with a circular pipe 22 at the lower end of the pipe 11, and a plate-shaped supporting member 25 for supporting the flange 23 is mounted at an interval of 90 deg. on the lower surface of a casing 24. Here, the flange 23 is formed substantially in a square shape, the corners are cut in an arcuate shape to form engaging portions. The portions are disposed between the members 25, the pipe 22 is inserted into a protection tube 6, and when the pipe 22 is engaged at approx. 45 deg., the portions can be engaged between the member 25 and the casing 24. After the pipe 22 is thus mounted in the casing 24, the contacting portion 26 is clogged with a patching material or a ceramic fibrous fiber.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an immersion type electromagnetic pump suitable for use in pumping out molten metal.

The immersion type electromagnetic pump is a cylindrical dielectric 4 electromagnetic pump,
The lower part of the main body is immersed in a bath-melted molten metal (temperature 300 to 800°C) of aluminum, zinc, tin, magnesium, or a group of alloys thereof, and the molten metal is pumped out by electromagnetic induction.

FIG. 1 is a front cross-sectional view showing the configuration of a conventional immersion type electromagnetic pump 1, in which the lower part of the main body of the electromagnetic pump 1 is immersed in molten metal 2, and the molten metal 2 pumped up by magnetic induction is drawn into the tap trough 3.
It is designed to be discharged from

In this figure, there is a cylindrical body 4 in the center of the electromagnetic pump 1.
is provided, and on the outside thereof, with a common axis, a circular pipe 51 made of refractories, a protective tube 6 made of metal cylindrical material that covers the outer periphery of the circular tube 5, a hollow cylindrical casing 7, and a plate covering the outer periphery of the casing 7. The refractory material 8 is placed next to J1. Further, on the outer periphery of the retainer Mf6, for example, six comb-shaped induction cores 9, 9... are arranged radially, and an annular coil 10°10... is fitted on the outer periphery of the retainer tube 6. It is fitted into the coil 10 from the outside.

To explain further, the induction core 9 is a columnar body having a planar sector shape, and a groove perpendicular to the axial direction is cut on the inner circumferential surface of the inductor core 9, and the coil 10 is fitted into the groove so that the inner circumferential surface becomes a protection tube. It is in contact with the outer peripheral surface of 6.

Next, fixing plates 11 made of refractory material are provided between the cylindrical body 4 and the circular tube 5 at 90° intervals, and the axes of the cylindrical body 4 and the circular tube 5 are aligned. Further, the circular pipe 5 and the tap water gutter 3 are connected by an annular connector 12 having a U-shaped cross section.

In such a configuration, when the coil lO... is excited with a predetermined phase difference, the molten metal 2 and the cylindrical body 4 and the circle 'w
The molten metal is drawn up through an annular molten metal drawing passage 13 formed between the molten metal and the molten metal 5, and is discharged from the tapping trough 3.

By the way, in the above-mentioned conventional electromagnetic pump l, the contact area between the circle 1If5 and the casing 7 is extremely small, so even if the contact part 14 is packed with patching material or ceramic fiber, the bath will not be absorbed from this part 14. There was a risk that the hot water 2 would enter and corrode the induction core 9 and coil 10, causing them to be damaged.

In view of the above circumstances, the present invention provides an electromagnetic pump in which the structure of the circular pipe and the casing is strengthened, and the gist is that an outer flange is formed at the lower end of the circular pipe. The wood is characterized by a supporting member provided on the underside of the casing.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIGS. 2 and 3 show an electromagnetic pump 2 according to an embodiment of the present invention.
Fig. 1 is a diagram showing the configuration of Fig. 1, Fig. 2 is a front cross-sectional view, and Fig. 3 is a
FIG. 14 is a view from the 14th arrow in the figure. In these figures, portions corresponding to those in FIG. 1 are designated by the same reference numerals, and explanations thereof will be omitted.

This embodiment differs from the conventional electromagnetic pump 1 shown in FIG. 1 in the following points.

(2) At the lower end of the circular tube 22 (which replaces the circular tube 5 in FIG. 1), an outer flange 23 is integrally formed with the circular tube 22.

(2) On the lower surface of the casing 24 (which replaces the casing 7 in FIG. 1), plate-shaped support members 25 for supporting the flange 23 are attached at 90° intervals. Here, the flange 23 has a substantially square shape, and each corner is cut into an arc shape to form a fitting part 23a.

In such a configuration, the circular tube 22 is inserted into the protective tube 6 such that the low entry portion 23a is located between the support members 25.
The fitting portion 23a can be fitted between the support member 25 and the casing 24 by rotating the circular tube 22 by about 45°. In this way, one circular tube 22 is attached to the casing 24.
After being attached to the contact portions 26, these contact portions 26 are filled using a patching material, ceramic fibers, or the like.

According to this embodiment, since the area of the contact portion 26 is increased, the circular pipe 22 is completely fixed to the casing 24, and a strong m# pumping passage 13 can be formed.

As explained above, in this invention, an outer flange is provided at the lower end of the circular pipe, and this flange is fixed to the lower surface of the casing, so that the circular pipe and the casing can be completely fixed, and the bath can be prevented from entering the 'ms pump.

This allows for safe operation.

Further, since a support member for supporting the flange is provided on the lower surface of the casing, the flange and the casing can be fixed more firmly.

Further, since the flange has a non-circular shape and can be fitted into the support member by rotating the circular tube in the circumferential direction, the circular tube can be mounted efficiently.

[Brief explanation of drawings]

FIG. 1 is a front sectional view showing the configuration of a conventional immersion type electromagnetic pump, FIG. 2 is a front sectional view showing the configuration of an immersion type electromagnetic pump according to an embodiment of the present invention, and FIG. Figure 2 1-1
#ii is a view in the direction of arrow. 2...Molten metal% 4...Cylindrical body, 5,2
2... Circular pipe, 7, 24... Casing, 9... Mark @ Conducting core % 10... Coil (induction coil), 13... Molten metal pumping passage, 23
...Flange, 25...Support member. Applicant Shinko Electric Co., Ltd.

Claims (1)

[Claims] (1) A cylindrical body, a refractory circular tube, and a hollow cylindrical casing arranged concentrically from the inside to the outside; An immersion-type electromagnetic pump that pumps up molten metal by electromagnetic induction through a molten metal pumping passage formed between the cylindrical body and the circular pipe, the immersion type electromagnetic pump consisting of an induction coil and a comb-shaped induction core that supports the induction coil. A submerged electromagnetic pump characterized in that a flange is formed at the lower end of the circular pipe. (2) Claims characterized in that a support member for supporting the flange is provided on the lower surface of the casing. 1st
Immersion type electromagnetic pump as described in section. (3) The flange has a non-circular shape and can be fitted between the casing and the support member by rotating the circular tube in the circumferential direction. The immersion plate described is the immersion pump.