JPH0584450U - Vaccination device - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to inoculate a molten metal stream uniformly with a prescribed amount of inoculant. [Structure] An accommodation chamber 3 capable of accommodating an amount of inoculant necessary for one pouring amount at an opening at a lower end of a hopper 1 for storing the inoculant.
And the inoculant contained in the containing chamber 3 is connected to the gas introducing pipe 7 by the pressurized gas supplied through the flow rate control valve 4.
Discharged evenly from the pouring machine to inoculate the pouring flow.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an inoculation device for uniformly inoculating a target molten metal with an inoculant.

[0002]

[Prior Art]

 Inoculation during the production of castings, especially ductile cast iron, improves the graphite structure, increases the number of eutectic cells, promotes graphitization, and improves the matrix structure.

Uniformity is required for the addition of this inoculant, and therefore, in Japanese Utility Model Laid-Open No. 59-120048, a nozzle is inserted into a chute extending from the feeder to the sprue, and jetted from this nozzle. A device has been proposed in which the negative pressure generated at the connection between the cutout and the chute by the pressure of the gas is used to supply the inoculant to the chute while dropping it into the chute.

However, since this type uses a spiral type as a feeder, even if a highly accurate mechanism utilizing fluid pressure is used, it is not sufficient to compensate for the variation in the cutting amount, and However, even if it could be adapted to uniform addition, there remains a problem in terms of quantitative control commensurate with the pouring amount.

[0005]

[Problems to be solved by the device]

 The present invention has been made in view of such a problem, and an object thereof is to provide a new inoculation device having a simple structure and capable of quantitative control and uniform inoculation. .

[0006]

[Means for Solving the Problems]

 That is, the present invention, as an inoculation device for achieving such a problem, connects a storage chamber for accommodating an amount of inoculant required for one pouring amount to the opening at the lower end of a hopper that stores the inoculant. The amount of gas required for one pouring amount should be such that the gas introducing pipe connected to the pressurized gas supply source via the flow control valve and the inoculant supply pipe opening near the pouring port are connected to this storage chamber. It is designed to be able to evenly inoculate the pouring flow of the above.

[0007]

【Example】

 Therefore, the embodiment illustrated below will be described. The drawings show an embodiment of the present invention. In the figure, reference numeral 1 is a hopper for supplying the inoculant, and the funnel-shaped hopper 1 has an orifice portion 2 at the lower end, which communicates with an inoculant storage chamber 3 to be described later. The inoculant is designed to flow continuously at a constant flow rate.

The storage chamber 3 has a function as a kind of fixed quantity container, and the storage chamber 3 extending in a direction substantially orthogonal to the axis of the hopper 1 has a volume necessary for one pouring amount. A conduit 6 having a volume for accommodating the inoculant, and connected to one of the accommodating chambers 3 through a flow rate control valve 4 of an electromagnetic type and a supply source 5 of the pressurized gas, is also connected. On the side, an inoculant supply pipe 7 extending near the pouring port 11 of the pouring ladle 10 is connected, and the control valve 5 is opened by the pouring signal output in conjunction with the tilting operation of the ladle 10. The pressurized gas from the pressurized gas supply source 6 is configured to inoculate the pouring stream with a fixed amount of the inoculant.

In the embodiment configured as described above, the inoculant introduced into the hopper 1 fills the storage chamber 3 while maintaining a constant flow rate from the funnel-shaped lower end thereof through the orifice portion 2.

Under this condition, when the operation lever 12 is operated to pour molten metal into a mold (not shown), the pouring signal output in response to this is operated by a drive mechanism (not shown) to tilt the ladle 10. On the other hand, the control valve 4 arranged in the conduit 6 opens the conduit to introduce the pressurized gas into the accommodation chamber 3, and the amount of the inoculant and hopper 1 corresponding to the amount of one pouring metal accommodated therein. The inoculant flowing down from the tank and the gas are sequentially supplied to the pouring spout to inoculate the molten metal evenly.

In this embodiment, the flow rate of the pressurized gas for uniformly sending the inoculant in the storage chamber 3 to the molten metal is controlled by the electromagnetic flow control valve 4. By using a control valve whose opening degree can be adjusted by a step motor, the flow rate of the pressurized gas can be further controlled.

[0012]

[Effect of the device]

 As described above, according to the present invention, a storage chamber for storing a required amount of inoculant for one pouring amount is provided at the lower end opening of the hopper for injecting the inoculant, and a fixed amount of the inoculant that has flowed into this chamber is supplied. Since the gas is supplied to the pouring port by pressurized gas whose flow rate is controlled, despite the simple structure, the necessary amount of the admixture for the pouring amount is sequentially added to the molten metal flowing out from the pouring port. It can be inoculated uniformly, and the quality of the casting and its yield can be greatly improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an apparatus showing an embodiment of the present invention.

[Explanation of symbols]

 1 Hopper 3 Fixed amount chamber 4 Flow control valve 5 Pressurized gas supply source 7 Inoculant supply pipe 10 Ladle 11 Pouring spout

Claims (1)

[Scope of utility model registration request] 1. A storage chamber for storing a required amount of inoculant for one pouring amount is connected to an opening at a lower end of a hopper for storing the inoculant, and the storage chamber is pressurized through a flow control valve. An inoculation device, characterized in that a gas introduction pipe connected to a gas supply source and an inoculant supply pipe opened near the pouring port are communicated with each other.