JP4732611B2 - Molten metal probe - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a molten metal probe for collecting molten metal as an analysis sample.
[0002]
[Prior art]
Conventionally, various types of molten metal probes are known, but one of the types that can be provided at low cost is a saddle type with a sampling container attached to the side of the body tube that forms the vicinity of the tip of the probe body. It has been known.
[0003]
[Problems to be solved by the invention]
In the first prior art shown in FIG. 4 (A), a holding cylinder 3 with a sampling container 2 is arranged on the side of a main body tube portion 1a located near the tip of a probe main body 1 made of a paper tube, and the main body tube The part 1a and the holding cylinder 3 are fixed to each other by staple-type nails 4.
[0004]
In the case of the first conventional example, since the holding cylinder 3 can be formed by a paper tube, it can be provided at a low cost. Therefore, it takes time and is not suitable for mass production.
[0005]
In the second prior art shown in FIG. 4 (B), a connecting ring 6 fixed by welding 5 is arranged in parallel on the peripheral surface of the sampling container 2, and after inserting the main body tube portion 1a into the connecting ring 6, a paper tube A connecting ring 6 is sandwiched from above and below by inserting a pair of holding rings 7 and 7 into the main body pipe portion 1a, and both holding rings 7 are fixed to the main body pipe portion 1a by nails 8. .
[0006]
However, in the case of the second conventional example, since the metal connection ring 6 is formed and fixed to the sampling container 2 by welding, there is not only a problem incurring high cost, but also the pair of holding rings 7 and 7 are connected. It takes time and effort to fix, and there is also a difficulty in productivity.
[0007]
[Means for Solving the Problems]
The present invention provides a molten metal probe that solves the above-mentioned problems, and is constructed as a means for attaching a sampling container to a side portion of a body tube portion that forms a portion near the tip of a probe body. In the configuration, the sleeve includes an outer sleeve fixedly attached to the main body tube portion, a holding cylinder into which an interior part including a sampling container is inserted, and a connecting means for connecting and fixing the sleeve and the holding cylinder to each other. Are formed with slits extending in the axial direction from one end in respective wall portions facing each other in a state of being juxtaposed with each other, and the connecting means is constituted by a mounting plate formed of a metal plate, and a sleeve and a holding cylinder A flat plate portion inserted across the slits, a first fixed plate portion extending from the flat plate portion along the inner peripheral surface of the sleeve, and extending from the flat plate portion along the inner peripheral surface of the holding cylinder. Two fixed plate portions, and with the main body tube portion inserted into the sleeve, the first fixed plate portion is sandwiched between the outer peripheral surface of the main body tube portion and the inner peripheral surface of the sleeve. The second fixing plate portion is sandwiched between the outer peripheral surface of the interior part and the inner peripheral surface of the holding cylinder while being inserted into the holding cylinder.
[0008]
In a preferred embodiment of the present invention, the connecting means is constituted by two mounting plates composed of a first mounting plate and a second mounting plate. The first mounting plate is a flat plate portion inserted across both slits of the sleeve and the holding cylinder, a first fixed plate portion extending in the counterclockwise direction along the inner peripheral surface of the sleeve from the flat plate portion, A second fixing plate extending in the clockwise direction along the inner peripheral surface of the holding cylinder from the flat plate portion, and the second mounting plate is inserted across both slits of the sleeve and the holding cylinder A first fixed plate portion extending in the clockwise direction from the flat plate portion along the inner peripheral surface of the sleeve, and a first extending from the flat plate portion in the counterclockwise direction along the inner peripheral surface of the holding cylinder. And two fixed plate portions.
[0009]
Furthermore, in the embodiment, the mounting plate constituting the connecting means is made of a metal plate having elasticity. The first fixed plate portion of the mounting plate is laid along the inner peripheral surface of the sleeve with a gap before the main tube portion is inserted into the sleeve, and when the main tube portion is inserted into the sleeve, It is configured to be sandwiched in an elastic state between the outer peripheral surface of the main body tube portion and the inner peripheral surface of the sleeve through elastic deformation. In addition, the second fixing plate portion of the mounting plate is fitted with a gap with respect to the inner peripheral surface of the holding cylinder before the interior parts are inserted into the holding cylinder, and the interior parts are inserted into the holding cylinder. When it does, it is comprised so that it may be pinched in an elastic state between the inner peripheral surface of a holding | maintenance cylinder, and the outer peripheral surface of interior components via elastic deformation.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
[0011]
FIG. 1 is a longitudinal sectional view of a principal part of a molten metal probe, and FIG. 2 is an exploded perspective view thereof. A main body tube portion 11a, which is the vicinity of the tip of a probe body 11 made of a paper tube, is formed from a paper tube. A sleeve 12 is attached by extrapolation, and a holding cylinder 13 made of a paper tube is provided in parallel on the side of the sleeve 12, and the sleeve 12 and the holding cylinder 13 are connected and fixed by connecting means 14.
[0012]
An interior part 16 including a sampling container 15 is inserted into the holding cylinder 13. In the illustrated example, the interior part 16 is composed of a sampling container 15 and a paper tube spacer part 17. In the figure, the sampling container 15 is provided with an upper cup type sampling chamber that opens at the top, but it may also be provided with a disk type sampling chamber, and further, a lower injection that opens at the bottom. It is good also as a container of a formula.
[0013]
In the case of the illustrated embodiment employing the cup-type sampling container 15, the upper opening of the container 15 is made to face the vicinity of the upper end of the holding cylinder 13, and the reduced diameter hole 19 of the partition plate 18 that covers the opening is formed as a thin paper board. The upper surface of the thin paper plate 20 and the upper edge of the holding cylinder 13 are covered with a fireproof adhesive 21. The lower part of the sampling container 15 is supported by a spacer part 17, and the lower side of the spacer part 17 and the lower end edge of the holding cylinder 13 are covered with a refractory mortar 22.
[0014]
Incidentally, the outer peripheral surface of the protective cylinder 13 is preferably covered with a non-splash material 23, and the outer peripheral surface of the main body tube portion 11 a located above the sleeve 12 is preferably covered with a non-splash material 24.
[0015]
A temperature measuring cartridge 25 having a temperature measuring element such as a thermocouple is attached to the tip of the main body tube portion 11a.
[0016]
In such a molten metal probe, the probe main body 11 is attached to an elevating device such as a sub lance, and is lowered with the tip of the probe main body 11 facing downward, and the main body tube portion 11a is immersed in the molten metal bath. When the thin paper board 20 burns out through the slag layer on the bath surface, molten metal flows from the reduced diameter hole 19 and is filled in the sampling container 15. When the paper tube comes into contact with the molten metal, splash is generated and gas is generated. However, at least in the vicinity of the diameter-reduced hole 19, the occurrence of splash is prevented by the non-splash materials 23 and 24, so that the gas flows into the sampling container 15. Gas does not get involved in the molten metal. During this time, the temperature of the molten metal is measured by the temperature measuring cartridge 25. Thereafter, when the probe body 11 is raised and pulled up from the molten metal bath, the molten metal collected by the sampling container 15 is solidified, and the emission spectrum is obtained as a solidified sample. Used for analysis and other sample analysis.
[0017]
In the molten metal probe having the above configuration, in order to connect and fix the sleeve 12 and the holding cylinder 13 to each other by the connecting means 14, the sleeve 12 and the holding cylinder 13 are opposed to each other in the state where they are arranged side by side. Slits 26a, 26b extending in the axial direction from one end are formed in the wall-like shape. In the case of the illustrated example, the slits 26 a and 26 b start from the cut portions formed at the lower ends of the sleeve 12 and the holding cylinder 13, and the end reaches the middle in the axial direction.
[0018]
The connecting means 14 is composed of a first mounting plate 27 and a second mounting plate 28 which are preferably formed of a metal plate having spring characteristics such as a thin iron plate. The first mounting plate 27 includes a flat plate portion 27c inserted across the slits 26a and 26b, and a counterclockwise direction along the inner peripheral surface of the sleeve 12 from the flat plate portion 27c (plan view, the same applies hereinafter). And a second fixed plate portion 27b extending from the flat plate portion 27c along the inner peripheral surface of the holding cylinder 13 in the clockwise direction. The second mounting plate 28 includes a flat plate portion 28c inserted across the slits 26a and 26b, and a first fixing plate extending from the flat plate portion 28c along the inner peripheral surface of the sleeve 12 in the clockwise direction. And a second fixed plate portion 28b extending in the counterclockwise direction along the inner peripheral surface of the holding cylinder 13 from the flat plate portion 28c.
[0019]
As is apparent from the drawing, the first mounting plate 27 and the second mounting plate 28 can be configured simply by arranging the metal plates having the same shape symmetrically, and therefore the first mounting plate 27 is formed by the press-formed metal plate having the same shape. And the second mounting plate 28 can be used together.
[0020]
When the sleeve 12 and the holding cylinder 13 are connected and fixed to each other by the connecting means 14, as shown in FIG. 3A, the two metal plates of the first mounting plate 27 and the second mounting plate 28 are made into one set. The flat plate portions 27c and 28c are overlapped with each other, and are combined so that the first fixed plate portions 27a and 28a face each other and the second fixed plate portions 27b and 28b face each other. Therefore, the flat plate portions 27c and 28c are inserted into the slits 26a and 26b in a state where the sleeve 12 and the holding cylinder 13 are arranged side by side so that the slits 26a and 26b communicate with each other. As a result, the first fixed plate portions 27 a and 28 a are inserted into the sleeve 12, and the second fixed plate portions 27 b and 28 b are inserted into the holding cylinder 13.
[0021]
When the first mounting plate 27 and the second mounting plate 28 are inserted into the sleeve 12 and the holding cylinder 13 until the upper ends of the flat plate portions 27c and 28c reach the terminal ends of the slits 26a and 26b, as shown in FIG. The first mounting plate 27 extends the first fixed plate portion 27a from the flat plate portion 27c in the counterclockwise direction along the inner peripheral surface of the sleeve 12, and the second fixed plate portion 27b from the flat plate portion 27c to the holding cylinder. 13 is extended in the clockwise direction along the inner peripheral surface of 13, but a gap 29 s is formed between the first fixed plate portion 27 a and the inner peripheral surface of the sleeve 12, and the second fixed plate portion 27 b and the holding cylinder 13 are A gap 30s is formed between the inner peripheral surface. The second mounting plate 28 extends the first fixed plate portion 28a from the flat plate portion 28c along the inner peripheral surface of the sleeve 12 in the clockwise direction, and the second fixed plate portion 28b extends from the flat plate portion 28c to the holding cylinder 13. Is extended in the counterclockwise direction along the inner peripheral surface of the first fixed plate portion 28a, but a gap 31s is formed between the first fixed plate portion 28a and the inner peripheral surface of the sleeve 12, and the second fixed plate portion 28b and the holding cylinder 13 are A gap 32s is formed between the inner peripheral surface and the inner peripheral surface. In the case of the illustrated example, by making the curvature radius of the first fixing plate portions 27a, 28a formed in a curved arc shape in the first mounting plate 27 and the second mounting plate 28 with respect to the inner diameter of the sleeve 12, Similarly, the radii of curvature of the second fixing plate portions 27b and 28b that form the gaps 29s and 30s and are curved in a circular arc shape of the first mounting plate 27 and the second mounting plate 28 with respect to the inner diameter of the holding cylinder 13. The gaps 31s and 32s are formed by making them different from each other. However, the present invention is not limited to this, and the first fixing plate portions 27a and 28a and the second fixing plate portions 27b and 28b can be arbitrarily deformed. Thus, the gaps 29s, 30s, 31s, and 32s may be formed.
[0022]
Thereafter, the body tube portion 11 a of the probe body 11 is inserted into the sleeve 12, and the interior part 16 including the sampling container 15 and the spacer part 17 is inserted into the holding cylinder 13. Since the main body pipe portion 11a is press-fitted into the inner surface of the pair of first fixing plate portions 27a and 28a inside the sleeve 12, the first fixing plate portions 27a and 28a are elastically deformed through the gaps 29s and 31s. Then, they are sandwiched in an elastic state between the outer peripheral surface of the main body tube portion 11a and the inner peripheral surface of the sleeve 12. Similarly, since the interior part 16 is press-fitted into the inner surface of the pair of second fixing plate portions 27b and 28b inside the holding cylinder 13, the second fixing plate portions 27b and 28b pass through the gaps 30s and 32s. Are elastically deformed and are sandwiched between the outer peripheral surface of the interior part 16 and the inner peripheral surface of the holding cylinder 13 in a resilient state.
[0023]
Therefore, the main body tube portion 11a and the sleeve 12 are elastically held by the first fixing plate portions 27a and 28a, and the interior part 16 and the holding cylinder 13 are elastically held by the second fixing plate portions 27b and 28b. . At the same time, the first mounting plate 27 and the second mounting plate 28 are firmly fixed to the sleeve 12 and the holding cylinder 13 respectively, and the sleeves are formed by the flat plate portions 27c and 28c inserted across the slits 26a and 26b. 12 and the holding cylinder 13 are firmly connected to each other so as not to be twisted or dropped. In addition, as shown in FIG. 1, it is preferable to drive in the nail 33 from the outer side of the sleeve 12, and to ensure the mutual fixation of the sleeve 12 and the main body pipe part 11a.
[0024]
In the case of the embodiment shown in FIG. 1, the second fixed plate portions 27 b and 28 b are held across both the sampling container 15 and the spacer component 17 inside the holding cylinder 13. 27b and 28b may be configured to be held only by at least one of the sampling container 15 and the spacer component 17.
[0025]
Of course, the present invention is not limited to the illustrated embodiment. For example, in the illustrated example, the connecting means 14 is composed of a pair of first mounting plate 27 and second mounting plate 28. The mounting plate 27 or 28 may be used. In the above embodiment, the first mounting plate 27 and the second mounting plate 28 are configured by leaf springs, and the first fixing plate portions 27a and 28a are sandwiched between the main body tube portion 11a and the sleeve 12 in a resilient state. The configuration in which the second fixing plate portions 27b and 28b are clamped between the interior part 16 and the holding cylinder 12 in a resilient state has been described. However, the first mounting plate 27 and the thin metal plate having no spring function are described. The second mounting plate 28 is formed, and the first fixing plate portions 27a and 28a are closely fitted between the main body tube portion 11a and the sleeve 12 without elastic deformation as described above, and the second fixing plate portion 27b, 28b may be closely fitted between the interior part 16 and the holding cylinder 13.
[0026]
【The invention's effect】
According to the present invention, in the molten metal probe in which the sampling container 15 is attached to the side portion of the main body tube portion 11a that forms the vicinity of the distal end of the probe main body 11, the man-hours for assembly and the number of parts are reduced, and the workability Thereby improving the cost. Then, the sleeve 12 fixed to the main body tube portion 11a and the holding cylinder 13 in which the sampling container 15 is housed are simply connected to each other at a predetermined position and in a precise positioning state without causing twisting displacement or the like. In addition, there is an effect that a strong connected state can be obtained.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a main part of a molten metal probe assembled according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing an embodiment of the present invention.
FIGS. 3A and 3B show an embodiment of the present invention, in which FIG. 3A is a perspective view showing a method of connecting a sleeve and a holding cylinder by a mounting plate, and FIG. 3B is a view before inserting a main body tube portion and interior parts. The cross-sectional enlarged view which shows a state, (C) is a cross-sectional enlarged view which shows the state after inserting a main body pipe part and interior components.
FIG. 4 shows a conventional example, (A) is a perspective view showing a first conventional example, and (B) is a perspective view showing a second conventional example.
[Explanation of symbols]
11 Probe body 11a Body tube portion 12 Sleeve 13 Holding cylinder 14 Connecting means 15 Sampling container 16 Interior part 17 Spacer parts 26a, 26b Slit 27 First mounting plate 28 Second mounting plate 27a, 28a First fixing plate portion 27b, 28b First Two fixed plate portions 27c, 28c Flat plate portions 29s, 30s, 31s, 32s

Claims (3)

In the configuration in which the sampling container 15 is attached to the side portion of the body tube portion 11a that forms the vicinity of the tip of the probe body 11,
A sleeve 12 that is externally attached and fixed to the main body tube portion 11a, a holding cylinder 13 into which an interior part 16 including a sampling container is inserted, and a connecting means 14 that connects and fixes the sleeve and the holding cylinder to each other.
The sleeve 12 and the holding cylinder 13 are formed with slits 26a and 26b extending in the axial direction from one end in respective wall portions facing each other in a state of being arranged in parallel with each other,
The connecting means 14 is composed of mounting plates 27 and 28 formed of a metal plate, flat plate portions 27c and 28c inserted across both slits 26a and 26b of the sleeve and the holding cylinder, and the flat plate portion. First fixed plate portions 27a, 28a extending along the inner peripheral surface of the sleeve 12, and second fixed plate portions 27b, 28b extending from the flat plate portion along the inner peripheral surface of the holding cylinder 13,
In a state where the main body pipe portion 11a is inserted into the sleeve 12, the first fixing plate portions 27a and 28a are sandwiched between the outer peripheral surface of the main body pipe portion 11a and the inner peripheral surface of the sleeve 12, and the interior component 16 is held by the holding cylinder. The molten metal probe is characterized in that the second fixing plate portions 27 b and 28 b are sandwiched between the outer peripheral surface of the interior part 16 and the inner peripheral surface of the holding cylinder 13 while being inserted into the inner tube 13. The connecting means 14 includes a first mounting plate 27 and a second mounting plate 28,
The first mounting plate 27 includes a flat plate portion 27c inserted across both the slits 26a and 26b of the sleeve and the holding cylinder, and a first extending from the flat plate portion in the counterclockwise direction along the inner peripheral surface of the sleeve. One fixed plate portion 27a, and a second fixed plate portion 27b extending from the flat plate portion along the inner peripheral surface of the holding cylinder in the clockwise direction,
The second mounting plate 28 includes a flat plate portion 28c inserted across the slits 26a and 26b of the sleeve and the holding cylinder, and a first extending from the flat plate portion in the clockwise direction along the inner peripheral surface of the sleeve. 2. The molten metal probe according to claim 1, comprising a fixed plate portion a and a second fixed plate portion b extending in the counterclockwise direction along the inner peripheral surface of the holding cylinder from the flat plate portion. . The mounting plates 27 and 28 constituting the connecting means are made of elastic metal plates,
The first fixing plate portions 27a and 28a of the mounting plate are fitted along the inner peripheral surface of the sleeve 12 with gaps 29s and 31s before the main body tube portion 11a is inserted into the sleeve 12. 12 is configured to be elastically sandwiched between the outer peripheral surface of the main body tube portion 11a and the inner peripheral surface of the sleeve 12 through elastic deformation when the main body tube portion 11a is inserted into the main tube portion 11a.
The second fixing plate portions 27b and 28b of the mounting plate are laid along the inner peripheral surface of the holding cylinder 13 with gaps 30s and 32s before the interior part 16 is inserted into the holding cylinder 13, When the interior part 16 is inserted into the holding cylinder 13, it is configured to be sandwiched in an elastic state between the inner peripheral surface of the holding cylinder 13 and the outer peripheral surface of the interior part 16 through elastic deformation. The molten metal probe according to claim 1 or 2.

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