JPH0119090Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a molten metal sampling device for automatically collecting a sample for analysis at an arbitrary depth in molten metal.

[Prior Art] Conventionally, in steel works and the like, it has been difficult to collect samples for analysis at arbitrary depths from the surface of molten metal due to the lack of suitable samplers. The main reason for the inability to collect samples is that the sampling port of the sampler is usually covered with a cap made of thin steel plate, and this cap is removed by melting due to the heat of the molten metal. This is because it is extremely difficult to control melting.

[Object of the invention] An object of the invention is to provide a molten metal sampling device that eliminates the above-mentioned drawbacks and is capable of automatically collecting a sample at an arbitrary depth of the molten metal.

[Summary of the invention] The gist of the invention to achieve the above objectives is as follows:
A molten metal sample collection container with an open top, a heat-resistant cylinder housing the collection container and having a sample introduction port slightly above the collection container, and a sample introduction port of the cylinder closed from the inside. a molten metal detection end provided at a predetermined position above the sample introduction port of the cylindrical body, and a driving means for removing the closure body based on a signal from the detection end. This is a molten metal sampling device.

[Embodiments of the invention] The invention will be described in detail based on illustrated embodiments.

FIG. 1 shows a partially cutaway side view of the device;
A steel pipe 2 coated with a heat-resistant material is removably inserted into the tip of the holder 1. As shown in FIG. 2, the lower end of the steel pipe 2 is bottomed, and a cup-shaped metal sample collection container 3, for example, is housed therein. A sample introduction port 4 is perforated in the horizontal direction in a portion of the steel pipe 2 slightly above the collection container 3, and a closure member 5 made of, for example, a paper tube is provided inside the hole in order to close the sample introduction port 4. are slidably fitted. And this closure body 5 has a closure body 5
A wire 6 made of, for example, piano wire is attached to pull the wire upward. Further, a metal piece 7 is embedded in the steel pipe 2 at a distance l above the sample introduction port 3 via an electrical insulator, and a lead wire 8 is drawn out from this metal piece 7.
A drive section 9 containing, for example, a solenoid is provided at the upper end of the holder 1, and a connecting rod 10 is suspended from the solenoid drive end through the inside of the holder 1. A coupling ring 11 is provided in the middle of the holder 1 to connect the front end and the rear end of the holder 1, and the coupling rod 11 connects the wire 6 and the connecting rod 10 without slack, and also connects the lead wire. 8 is connected to a conductive wire (not shown) connected from above inside the holder 1 via, for example, a connector. And metal piece 7
An electrical circuit using, for example, a relay is configured so that a current flows through the lead wire 8 when the lead wire 8 is connected to the molten metal, and the solenoid is actuated.

Since the embodiment of the present invention has the above-described configuration, when the steel pipe 2 is gradually immersed into molten metal with the holder 1 in hand, a current flows through the lead wire 8 at the moment the metal piece 7 comes into contact with the molten metal. By driving the solenoid and pulling up the connecting rod 10 and wire 6, the closing body 5 is moved upward as shown in FIG. Therefore, the molten metal at that position flows into the interior through the sample introduction port 4 and fills the collection container 3.

When the solenoid is activated, it is preferable to notify the start of molten metal collection using a buzzer or a lamp. It is also possible to operate the Further, when the steel pipe 2 is automatically raised and lowered by a mechanical device, the holder 1 may be attached to the lifting device 12, and the lowering of the steel pipe 2 may be stopped by detecting molten metal.

When the steel pipe 2 is immersed in molten metal, the closing body 5 will be directly exposed to high-temperature molten metal from the sample introduction port 4. However, if the closing body 5 is made of a paper tube, the water inside the paper tube will be exposed directly to the high temperature molten metal. Since the moisture reacts with the molten metal to produce splash and the molten metal does not adhere to the closure body 5, there is no problem in lifting the closure body 5 upward.

The desired sample is obtained by pulling up the steel pipe 2 when the collection container 3 is filled with molten metal, then taking out the collection container 3 by cutting the steel pipe 2, etc., and taking out the solidified sample in the collection container 3. I can do it. In the automatic lifting device, a sequence circuit may be provided that lifts the steel pipe 2 several seconds after the solenoid is activated.

In this case, the depth of sample collection is determined by the distance l between the sample introduction port 4 and the metal piece 7, and by changing the embedding position of the metal piece 7, sample collection at an arbitrary depth becomes possible.

Here, the collection container 1, steel pipe 2, closure body 5, wire 6, metal piece 7, and lead wire 8 are disposable consumables and must be replaced with new ones each time they are used. 2, the wire 6 and the connecting rod 10 are connected at the coupling 11, and the lead wire 8 is connected, thereby completing the preparation for sample collection.

Note that the steel pipe 2 housing the collection container 3 is not necessarily a metal pipe, but may be a paper pipe as long as the surrounding area is sufficiently heat-resistant coated. In addition, although one metal piece 7 was used to detect the presence or absence of molten metal, two metal pieces 7 were installed at the same level with a gap between them, and the metal pieces 7 were electrically connected to each other through the molten metal. There is no problem even if the detection signal is obtained. Furthermore, it goes without saying that other types of detection ends may be used, and other types of drive mechanisms other than solenoids may also be used. Moreover, the closing body 5 does not have to be a cylinder or a cylindrical body as in the embodiment, but it is also possible to attach a closing body of a different shape to the inside of the sample introduction port 4 and peel it off using the wire 6.

[Effects of the invention] As explained above, the molten metal sampling device according to the invention has a built-in closing body that closes the sample introduction port, and when the sample introduction port reaches a predetermined depth, the detection end detects the molten metal. Since the metal can be detected, the obstruction can be mechanically removed, and the molten metal can be guided into the collection container, it is possible to easily collect a sample at a desired depth.

[Brief explanation of drawings]

The drawings show an embodiment of the molten metal sampling device according to the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a longitudinal cross-sectional view, and Fig. 3 shows a moving blocker. FIG. 1 is a holder, 2 is a steel pipe, 3 is a sample collection container, 4 is a sample introduction port, 5 is a closure body, 6 is a wire,
7 is a metal piece, 8 is a lead wire, 9 is a drive section, 10 is a connecting rod, and 11 is a coupling.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A molten metal sample collection container with an open top, a heat-resistant cylinder housing the collection container and having a sample introduction port slightly above the collection container, and the cylinder. a closing body that closes the sample introduction port of the body from the inside; a molten metal detection end provided at a predetermined position above the sample introduction port of the cylindrical body; and the closure body is removed based on a signal from the detection end. A molten metal sampling device characterized by comprising: a driving means. 2. The molten metal sampling device according to claim 1, wherein the closing body is a paper tube that is slidable inside the cylinder. 3. The molten metal sampling device according to claim 1, wherein the detection end is a conductive metal piece, and the presence or absence of molten metal is detected using the conductivity of the molten metal. 4. The molten metal sampling device according to claim 1, wherein the driving means pulls up the closing body via a wire. 5. The molten metal sampling device according to claim 1, wherein the cylindrical body is raised and lowered by mechanical means. 6. The molten metal sample collecting device according to claim 5, wherein the descending of the cylindrical body is stopped by a signal from the sensing end.