JPH019010Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pin sampler with good workability and high sampling yield.

Normally, a pin sampler is used by inserting a pin sample collector (silica tube) 1 into a connector (rubber insert) 3 provided at one end of the suction tube 2, as shown in Fig. The molten metal in the container (melting furnace, ladle, tundish mold, etc.) is collected by the sampling device 1 using the suction power of the provided suction device (rubber ball pump) 4.
The required amount is sucked and stored in the chamber, and after cooling, it is taken out and used as an analysis sample.

The important thing about this pin sampler is that it is responsible for taking a sample at a specific moment of molten metal reaction or refining or temperature, so if the sampling is unsuccessful, it will be used for other general sampling purposes. Unlike, it is required from reaction refinement or experimental reproduction. Therefore, an absolute success rate is required and the desired reliability is extremely strict.

However, in the conventional sampler shown in Fig. 1, it is not easy to attach the sampler 1 to the connector 3, and the outside diameter of the connector 3 is large, so when sampling through the through hole, a large through hole is required. In addition, the workability is extremely poor, as the rubber 3' constituting the rubber is exposed to the high temperature of the molten metal and deteriorates in quality. Moreover, this deterioration not only affects workability but also causes a defect in the connection state of the connector 3 that cannot be detected visually, and the collector 1 may fall during use.

Sampling failures that occur in this way cannot be treated simply by re-sampling;
It wastes a lot of time, effort and money.

The present invention was developed based on the knowledge obtained from repeated experiments by the inventors in order to meet the above-mentioned demands and solve the above-mentioned problems. The outer periphery of one end is screwed onto the inner periphery of the other end of the suction tube 2 to which the other end of the suction tube 2 is attached, and the other end can be inserted into the inner lumen of one end of the collection tube 1. A holding piece 14 is formed by screwing the inner periphery of one end and providing a plurality of slits 13 toward the other end so as to be expandable and contractible, and in the inner cavity,
A cylindrical holding device 11 into which the joint tube 7 and one end of the collector 1 into which the other end of the joint tube 7 is inserted can be inserted; A pin sampler includes a ring 15 which is inserted into the ring 15 to expand and contract the slit forming part of the clamping part 14 to clamp or release the outer periphery of one end of the sampling tube 1.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 shows an embodiment of the present invention, A is a cross-sectional view of the main part showing a connecting device for the collector 1 and the suction tube 2, which is one of the characteristic requirements of the present invention, and B is a cross-sectional view of the main part of the present invention. 1 is a cross-sectional view of a main part showing a holding device for a collection device 1 provided in a suction tube 2, which is another one of the characteristic requirements of the present invention; FIG.

First, let me explain about A. In the figure, 6 is a female thread carved on the inner periphery of the suction tube 2 on the side opposite to the suction device, and 7 is a male thread 8 that corresponds to the female thread 6 carved on one end, and at least the outer diameter of the other end is the diameter of the sampling tube. This is a joint tube of the collector 1 which can be inserted into the inner diameter of the collector 1 and has a pore 9 in the center.

Next, I will explain about b. In the figure, 10 is the suction tube 2
A male screw 11 is carved on the outer periphery of the side opposite to the suction device, and a female screw 12 to be screwed into the male screw 10 is carved on the inner periphery of one end, and a slit 1 is formed on the other end toward the other end.
This is a holding device for a collector 1, in which a holding member 14 is configured to be expandable and retractable by a ring 3, and a ring 15 that can be expanded and contracted is inserted into the holding member 14 to hold the collector 1.

C shows the appearance of this embodiment constructed from A and B described above, which includes the suction device 4, the suction tube 2, the holding device 11, the clamping piece 14, the ring 15, the joint tube 7, and the collector 1 (transparent silica tube). ing.

The sampler 1 used in this example is provided with a narrow portion 16, but this is for the purpose of forcibly stopping the suction of more sample molten metal than necessary and is not an essential requirement for implementing the present invention. . Further, the shape of the lower end of the joint tube 7 is not limited to the circular head shown in the figure, but may be a flat head as long as it does not interfere with the insertion of the collector 1. Furthermore, in order to fix the joining pipe 7 and the holding device 11 to the suction pipe 2, not only screwing but also any fixing means such as welding, brazing, fitting, etc. may be used.

According to the present invention described above, the diameter of the joining device is reduced and there is no need to enlarge the sampler insertion hole, etc., and the sampler is reliably held by the holding device. Moreover, since there is no increase in the mechanism due to this, the effect of reducing the diameter of the joining device is promoted, and all of the clamping and attachment/detachment of the collecting device can be completed by inserting the collecting device into the joining device and sliding the ring. Work efficiency is greatly improved, rapid and accurate sampling becomes possible, and since a suitable level of airtightness is always maintained, there are no failures in sample collection.

[Brief explanation of the drawing]

Figure 1 is an overall diagram showing the conventional example, Figure 2 A, B,
C is a diagram showing an example of the present invention, A is a longitudinal sectional view of one of the main parts, B is another longitudinal sectional view of the main part, C is A,
FIG. 1... Collection device, 2... Suction tube, 3... Connection tool,
4...Suction device, 5...Container, 6...Female screw, 7...
...Joining pipe, 8...Male thread, 9...Small hole, 10...
Male thread, 11...Retaining device, 12...Female thread, 1
3... slit, 14... clamping piece, 15... ring, 16... narrow portion.

Claims (1)

[Scope of Claim for Utility Model Registration] The outer periphery of one end is screwed to the inner periphery of the other end of the suction tube 2 with the suction device 4 attached to one end, so that the other end can be inserted into the inner lumen of one end of the collection tube 1. A clamping piece 14 is formed on the outer periphery of the other end of the joint tube 7 and the suction tube 2, and the inner periphery of one end is screwed together, and a plurality of slits 13 are provided toward the other end so that the holding piece 14 can be expanded and contracted. To,
A cylindrical holding device 11 into which the joint tube 7 and one end of the collection tube 1 into which the other end of the joint tube 7 is inserted can be inserted; A pin sampler comprising: a ring 15 that is inserted to expand and contract the slit forming portion of the clamping piece 14 to clamp or release the outer periphery of one end of the sampling tube 1.