JPS5951325B2 - Separation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for separating an aspirate from a suction air flow path.

When separating the aspirate from the suction air flow path, the present applicant has developed a device that separates the aspirate without breaking the negative pressure in the suction air flow path. Although a separation device has been proposed that includes a communicating liquid tank and an impeller provided in a communication section between the liquid tank and a negative pressure chamber, the present invention further provides a separation device that can reliably separate the aspirate. It is.

The scum on the surface of the molten metal is sucked, water is injected onto the scum, the scum is cooled and solidified, and the suction airflow containing the cooled and solidified scum, the injected water, and the steam generated by the injected water is combined with the scum and water. An embodiment in which the present invention is applied to the case of separating will be described based on the drawings.

Reference numeral 1 denotes a negative pressure chamber whose interior is kept in a negative pressure state, and includes a cylindrical side wall 1a, a funnel-shaped bottom wall 1b, and an upper wall 1 that covers the side wall 1a.
It has C.

A suction device communication port 2 that communicates with a suction device such as a vacuum pump is opened in the side wall 1a.

The upper wall 1C is provided with a suction inlet 3 that communicates with a suction head that is located above the scum on the surface of the molten metal and that sucks the scum and injects water onto the sucked scum.

This suction flow inlet 3 consists of a suction material inflow cylinder 4 that penetrates the upper wall 1C of the negative pressure chamber 1 and opens inside the negative pressure chamber 1, and an air escape port 5 is provided on the circumferential surface of the cylinder 4. ing.

Specifically, the cylinder 4 includes an upper cylinder 6 fixed to the upper wall 1C of the negative pressure chamber 1, a funnel-shaped central cylinder 7 that loosely fits around the outer circumference of the lower end of the upper cylinder 6, and a central cylinder 7 at the center. It consists of a funnel-shaped lower cylindrical body 8 that loosely fits around the lower end of the cylindrical body 7, and the air escape port 5 is formed in the gap between each cylindrical body 6 and 7, and also between 7 and 8. .

The lower cylinder body 8 includes a negative pressure chamber 1 facing the suction device communication port 2.
An opening 9 is formed that opens toward the inner wall of the housing.

10 connects the central cylindrical body 7 and the lower cylindrical body 8 to the upper wall 1 of the negative pressure chamber 1.
This is a support member fixed to C.

Reference numeral 11 denotes a cylindrical discharge port formed continuously on the bottom wall 1b of the negative pressure chamber 1. The discharge port 11 opens below the water surface of the liquid chamber 12, and is connected to the negative pressure chamber 1 and the liquid chamber 12. A communicating portion 11' is formed, and an impeller 13 is disposed in the communicating portion 11'.

The impeller 13 is fixed to one end of a drive shaft 14 passing through the side wall of the liquid chamber 12, and is rotationally driven by a drive device via a pulley 15 at the other end of the drive shaft 14.

Reference numeral 16 denotes a wash water discharge port provided on the side wall 1a of the negative pressure chamber 1, and is installed in a direction tangential to the inner circumferential surface of the side wall 1a to discharge water.

According to such a configuration, while the suction airflow containing scum, water, and water vapor that has flowed in from the suction material inflow cylinder 4 flows through the cylinder 4, a portion of the water vapor and air with a light specific gravity is released from the air escape port 5. It exits the cylinder 4 and flows to the connection port 2, and the flow rate decreases.

Then, when the suction airflow exits into the negative pressure chamber 1 from the lower end opening of the lower cylinder 8, the cross-sectional area of the suction air flow path increases, so the flow velocity further decreases, and the scum and water with heavy specific gravity are discharged to the lower discharge port. Fall towards 11.

On the other hand, when the air and water vapor in the suction airflow exit from the lower cylinder 8, they descend slightly and then rise and exit from the connection port, thus separating the scum and water from the suction airflow.

The scum and water that have fallen into the discharge port 11 are moved into the liquid chamber 12 by the action of the impeller 13 without breaking the negative pressure in the negative pressure chamber 1.

The present invention is as described above, and since the air escape port is provided in the aspirate inflow cylinder, the suction airflow flows from the opening end of the negative pressure chamber of the aspirate inflow cylinder to the suction device communication port, and the air Since it flows from the relief port to the suction device communication port, the speed of the suction airflow flowing from the opening end of the negative pressure chamber of the aspirate inflow cylinder to the suction device communication port is reduced, and the aspirate does not move to the suction device communication port. This ensures that the aspirate is separated from the suction airflow.

[Brief explanation of drawings]

The drawing is a sectional view showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Negative pressure chamber, 2... Suction device communication port, 3... Aspirate inlet, 4... Aspirate inflow cylinder, 5... ... Air escape port, 1] ...
・Discharge port section, 12...Liquid chamber, 13...
・Inhera.

Claims (1)

[Claims] 1. A negative pressure chamber that communicates with a suction device, a liquid chamber that communicates with the negative pressure chamber, an impeller that is provided in a communication section between the liquid chamber and the negative pressure chamber, and a an aspirate inflow cylinder provided through the aspirate, and a suction device communication port provided in the negative pressure chamber and opened on the side of the aspirate inflow cylinder from the opening end of the negative pressure chamber of the aspirate inflow cylinder; A separation device characterized in that an air escape port is provided in the negative pressure chamber of the aspirate inflow cylinder.