JPS58122169A - Vacuum type ladle device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention Technical Field of the Invention The present invention is a one-set odor ladle device cm that connects all molten metal (# hot water). Background of the invention Il and problems General L-1 hot water is In order to maintain and stabilize the quality of cast products, j! Iron, arm gas I & shoes are being done.

On the other hand, when pouring the molten metal into the ladle, there are two methods: pouring it by hand with a ladle until it reaches a predetermined amount, and pouring the molten metal into a reverberatory furnace at a high level such as in a tilting furnace. When transferring to the holding furnace, gravitational energy is used in most cases. Therefore, since the molten metal falls into the hot water with a parabolic flow, a large amount of air cannot be avoided, and the molten metal in the furnace is deoxidized and degassed.
Even with salt, it was difficult to produce high quality and stable castings.

Purpose of the Invention The purpose of the present invention is to receive or supply molten metal. Iiii (-I
An object of the present invention is to provide a vacuum type and riveting device that can produce stable castings of high quality with significantly less air inclusion.

Summary of the Invention A stalk for pumping up and discharging molten metal is provided at the bottom of the ladle, and a vacuum generator v is provided to create a negative pressure inside the ladle by the venturi effect when compressed air is released. It is designed to pump up water by applying negative pressure inside.

EMBODIMENT OF THE INVENTION No. 11 shows an embodiment of the present invention. 11 shown in the above is the case where the stalk 12 is attached to the bottom in the flii direction,
It is sealed by the upper orchid end hole 13. Toribe i
The stalk 1 and the stalk 12 are each made of a steel plate, and their inner teeth are lined with a thermothermal material 14, and the stalk 1 is
The outward-facing turtle 2; is made of a material with good moisture resistance (the 8 holes are coated with a #1 radiation coating. The cover 13 is also made of steel plate, and the inner surface is lined with heat insulating material (the 4 holes are lined). ℃, and in order to avoid the effects of high temperatures, welded ladle l16 and welded 7 kunji 15W seal l16 through welding l16.
It's 111. The tip nozzle part 12 & 2 of the stalk 12 is provided with a valve 17 for controlling the flow rate, and the end of a valve stem 18 extending upward from this valve 17 penetrates the cover 13 via a bellows 19, 13G - A handle 21 is connected to a lever 20 whose one end is a fork point, and the lever 20 is rotated by a plate edge 62, so that the cover 17 is moved in the vertical direction L.
- Move and wajIil the flow rate of the nozzle 12a. 2
2 is true in contact with the exhaust pipe 24 of the cover 13 with the valve 23! With the generator, the molten metal is pumped up, and the pressure is like the air arrow (
From the second discharge step 62, the negative pressure inside the ladle is created by the venturi effect at that time, and the melt #k is pumped up from the stalk 12. 2s.

A hanger 254 is suspended through the arm 26 of the handle 254, and there is a handle 26 that recognizes that a predetermined amount of food has entered the handle 11.

Next (2) The operation of the above device will be explained. #When pumping up the inside of the hot water pot 11, *Release the flap valve 57 and lower the ladle 11v suspended by the hanger 25##The upper part 27 of the furnace 27 Then, insert the stalk 12 into the hot water.
I! 122 is operated to gradually reduce the pressure in the ladle 11 and pump the molten metal in the furnace 27 through the stalk 12. The weight scale 26 is monitored, and when a predetermined amount of molten metal has entered the ladle 11, the handle 21 is operated to open the nozzle 12a by the valve 17.
, and also close the valve 23 of the exhaust pipe 24. !
The operation of the generator 22 is stopped.

Next, move the ladle 11 to a predetermined position, and when the ladle 11 is placed in the casting 1 that requires molten metal, turn the ladle 11 into the casting 1 as shown in the mz diagram.
2 into the small pool 27, and the exhaust pipe valve 23 and l
I4111 Valve 17tl - Gradually open to supply molten metal. When pouring ladle 11$2#1#k like this, insert stalk 12t into the hot water and pump it up with negative pressure inside ladle 11. A like when doing conventional pouring
The amount of air flowing into the ink can be significantly reduced without the entrainment of 9 air caused by L & etc. ・When supplying the obtained molten metal, insert the tip of the air into the bottom of the hook, etc. In addition, - exhaust valve 23 and flow rate ll1lII 11 valve 17vt
Since the molten metal is gradually opened and supplied, the flowing molten metal is continuously supplied without coming into contact with air, which improves the flow of gas during oxidation.
G can be stopped.

In addition, for a reverberatory furnace or the like in which the molten metal cannot be pumped up from the upper part, the purpose can be achieved by appropriately tilting the stalk 12 with respect to the vertical axis. In addition, a heater may be installed in the valve 12 to prevent cooling, and the valve stem 18 of the valve 17 may be operated by electromagnetic force to automatically function as a fixed-dose dispenser. can.

Results of the Invention As mentioned above, according to the present invention, the molten metal can be pumped up and transferred without continuous contact with the outside air, thereby reducing the entrainment of gas during oxidation of the molten metal. Since this does not occur and the pressure in the ladle is reduced, residual gas can be released, resulting in high-quality and stable casting.

[Brief explanation of the drawing]

s1 diagram is true according to the present invention-=! A sectional view showing one embodiment of the type ladle device, @2 is an explanatory view of the device in use. ii... Toribe 12... Stoke 17
...Flow rate ii*valve 22...True 9 generator cost salt input Patent attorney Inoue -Male

Claims (1)

[Claims] #Stoke for pumping and discharging hot water with a flow rate am valve A ladle commonly used in vJIEs, and this ladle is used for pumping molten metal, and by the Venturi effect of the air release gland, it is liberated. Equipped with an exchange generator that creates negative pressure inside! Type ladle device.