JPS6125407B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for separating suction material from a suction conveyance path and for condensing water vapor contained in a gas flow in the suction conveyance path.

In order to separate the aspirate from the suction conveyance path and condense the water vapor contained in the suction air flow in the suction conveyance path, the applicant previously proposed a device that has both separation and condensation functions, As a result, compared to the case where the separation device and the condensation device are provided separately, the device can be made more compact and the suction conveyance path can be shortened. However, the device proposed above discharges the cooling water and condensate used for condensation into the conveyance path of the suction material, so if the suction material is high temperature,
When the cooling water or condensate comes into contact with the suction object, a large amount of water vapor is generated, which causes a problem in that the negative pressure in the suction conveyance path decreases and the suction force decreases.

The present invention provides a separation device in which condensate and cooling water can be discharged through a separate route from the separated suction material, thereby solving the problem of reduced suction power.

Below, the scum on the surface of the molten metal is sucked, water is injected onto the sucked scum to solidify the scum, and the scum and water are separated from the suction airflow containing the solidified scum and water vapor generated by the injected water. An embodiment in which the present invention is applied to condensing water vapor will be described based on the drawings.

Reference numeral 1 denotes a chamber body, which has a cylindrical side wall 1a and a funnel-shaped bottom wall 1b, and inside the chamber body 1 is a conical partition plate fixed near the boundary between the side wall 1a and the bottom wall 1b. It is vertically divided into upper and lower sections by 2. The partition plate 2 has a large number of ventilation holes 3 on its entire surface, and a cylindrical wall 3a protruding from the upper surface of the partition plate 2 is provided at the upper edge of each ventilation hole 3. A solid material filling layer 4 is provided in the chamber body 1 above the partition plate 2. The solid material filling layer 4 is formed by filling a solid material made of synthetic resin with a large void ratio between a pair of wire meshes 5, 5 fixed to the chamber body 1. The chamber body 1 on the opposite side of the partition plate 2 of the solid substance packed bed 4
A suction device communication port 6 opens therein, and a cooling water supply device 7 is provided. The suction device communication port 6 is connected to a suction device such as a vacuum pump. The cooling water supply device 7 includes a distribution pipe 7a connected to a cooling water supply path outside the chamber body 1 and provided with a large number of distribution nozzles 7b. A drain port 8 is opened at the lower end position along the conical partition plate 2 in the chamber body 1 on the side of the partition plate 2 of the solid material filling layer 4 . Drain port 8 is connected to a pump. An aspirate inflow passage 9 is opened in the lower chamber 1 partitioned by the partition plate 2, passing through the upper wall of the chamber 1, the solid material filling layer 4, and the partition plate 2. The other end of the suction material inlet passage 9 communicates with a suction head located above the scum on the surface of the molten metal, which sucks the scum and injects water onto the sucked scum. At the center of the bottom wall 1b of the chamber body 1, there is provided an aspirate discharge passage 12 whose lower end is located below the water surface 11 of the water tank 10, and the aspirate discharge passage 12 and the aquarium 1
The impeller 13 that opens the water tank 10 to the inside of the water tank 10
It is located inside. The impeller 13 is fixed to one end of a drive shaft 14 passing through the bottom wall of the water tank 10, and is rotationally driven by a drive device connected to the other end of the drive shaft 14. The drive shaft 14 is supported by the water tank 10 via a cylinder 15.

Next, to explain the operation, the suction air flow containing the scum sucked by the suction head and solidified by the jetted water, the jetted water, and the generated water vapor flows from the suction material inflow passage 9 to the space below the partition plate 2 of the chamber body 1. 16. When the suction airflow enters the space 16, it is decelerated due to the increase in its flow cross section, so that the scum and water with a heavy specific gravity are separated from the suction airflow and fall into the suction discharge passage 12. The fallen scum and water are discharged into the water tank 10 via the impeller 13 due to the centrifugal action of the impeller 13. At this time, the aspirate discharge passage 12
is sealed by the water while preventing water from entering the water tank 10 due to the centrifugal action of the impeller 13, thereby maintaining the negative pressure within the chamber body 1. On the other hand, the suction airflow and water vapor that have flowed into the space 16 rise toward the suction device communication port 6, and
and passes through a solid packed bed 4. Since the cooling water injected from the water spray nozzle 7b is flowing down inside the solid-filled bed 4, the rising water vapor is heat exchanged with the cooling water and condenses. This condensed water and cooling water fall onto the upper surface of the partition plate 2 and are discharged to the outside of the chamber body 1 through the drain port 8. In this way, by providing the partition plate 2, condensate and cooling water are prevented from falling into the space 16 or the suction material discharge passage 12, so that the condensate and cooling water come into contact with the high-temperature scum and evaporate. This prevents a decrease in suction power due to the generation of water vapor. Since the partition plate 2 is provided with the cylindrical wall of the ventilation hole 3, it is possible to reliably prevent condensate water and cooling water that fall and flow onto the partition plate 2 from falling from the ventilation hole 3. Note that condensate and cooling water droplets may fall directly into the ventilation hole 3 and cause space 1.
Intrusion into the interior of the air vent 6 can be prevented by appropriately setting the diameter or number of the vent holes 3 to increase the flow velocity of the suction air flow blown up from the space 16 through the vent holes 3 to a certain level or higher.

In the above embodiment, the impeller 13 was provided at the outlet of the aspirate discharge passage 12, and the water tank 10 was provided to enable continuous discharge of the aspirate. 1
2 may be omitted, and an opening/closing lid may be provided in the space 16 so that the suction material may be taken out intermittently.

As described above, according to the present invention, separation of the aspirate from the suction conveyance path and condensation of water vapor contained in the suction airflow can be performed within the same device. In addition, since the partition plate has a conical shape, condensed water and water used for condensation can easily be collected at the lower end position where the drain opening is opened, and the upper edge of the ventilation hole of the partition plate can be easily collected. By providing a cylindrical wall, water flowing down along the conical partition plate toward the lower end can be prevented from falling from the ventilation hole, and therefore condensed water and cooling water used for condensation can The suction material can be discharged without touching it. Therefore, even if the suction material is high-temperature, there is no problem of reduction in suction power due to condensed water or cooling water contacting the suction material and evaporating.

[Brief explanation of the drawing]

The drawing is a sectional view showing an embodiment of the present invention. 1... Chamber body, 2... Partition plate, 3... Ventilation hole, 4
...Solid matter packed bed, 6...Suction device communication port, 7...
... Cooling water supply device, 8 ... Drain port, 9 ... Aspirate inflow passage, 10 ... Water tank, 13 ... Impeller.

Claims (1)

[Claims] 1 The interior of the chamber is vertically divided vertically by a conical partition plate having ventilation holes, a cylindrical wall protruding from the top surface of the partition plate is provided at the upper edge of the ventilation hole, and solids are filled in the partitioned upper chamber. A cooling water supply device is provided in the chamber on the opposite side of the partition plate of the solids-filled layer, and a suction device communication port is opened, and the lower end along the partition plate in the chamber on the partition plate side of the solids-filled layer is provided. 1. A separation device characterized by having a drain port opened at a position and an aspirate inflow passage opening into a partitioned lower chamber.