JPS6020629Y2 - Funnel for liquid analysis sample injection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a funnel for injecting a liquid analytical sample into a sample cell of an analyzer.

A funnel 1 as shown in Fig. 1 is widely used to inject a liquid analysis sample into a sample cell. A vortex is generated and air bubbles are mixed into the sample cell together with the sample, and these air bubbles cause measurement errors in, for example, sugar analyzers.

Conventionally, the sample is slowly introduced into the funnel in order to minimize the generation of eddy currents, but this is time consuming and inevitably introduces air bubbles.

Alternatively, for the purpose of preventing the above-mentioned vortex flow, as shown in FIG. 2, a funnel 1 having a structure in which a triangular partition plate A is continuously provided in the center of an inverted truncated conical funnel body portion 1a is also available. Proposed.

According to this, although it has a certain effect in that it does not generate eddies, the inside of the funnel main body portion 1a is completely separated, so the liquid injection part is halved in terms of capacity.
However, there is a drawback that it takes time to inject the sample, or if the liquid is injected at the upper edge of the partition plate A, the sample can be injected into both of the divided liquid injection parts.
In this case, the sample hits the upper edge of the partition plate A,
There was a drawback that the sample became splashed and bubbles were generated.

Furthermore, when injecting different types of samples, it is important to clean the inner surface of the funnel 1, but since the liquid injection part is narrowly divided by the partition plate A, cleaning is difficult. In particular, the area between the partition plate A and the funnel body portion 1a is a bottleneck for cleaning.

The present invention was devised in view of the above-mentioned circumstances, and attempts to eliminate all of the above-mentioned drawbacks through extremely simple improvements.The funnel for liquid analysis sample injection according to the present invention is A locking plate is provided on one longitudinal end of the elongated plate, and an upper edge of the funnel main body is provided between the plate surface of the locking plate and the widthwise side end surface of the elongated plate. A state in which a vortex current prevention member is formed by forming a removable gap in the eddy current prevention member, and the eddy current prevention member is brought into contact with the inner wall surface of the funnel body portion with the width direction side end surface of the elongated plate body thereof. The funnel is characterized in that the gap is engaged with the upper edge of the funnel body.

Hereinafter, one embodiment of the present invention will be described based on the drawings of FIGS. 3 and 4. In the figures, 3 is a sample cell of, for example, a sugar analyzer, and is provided with a sample inlet/outlet 4 on the upper surface.

Reference numeral 5 denotes a funnel for injecting a liquid analysis sample into the sample cell 3, and is composed of a funnel main body portion 6 in the shape of an inverted truncated cone and a cylindrical spout portion 7.

Reference numeral 3 denotes an eddy current prevention member which is detachably attached to the upper edge of the funnel main body portion 6, and is provided at one end in the longitudinal direction of the elongated plate body 9 and has an L-shape when viewed in the longitudinal direction of the elongated plate body 9. At the same time, the locking plate 12 is fixed to the bent piece 10 by means of adhesive, welding, etc. so that the bent piece 10 has a T-shape when viewed in the longitudinal direction of the elongated plate 9. A predetermined hole is provided between the width direction side end surface 9a of the elongated plate body 9 and the plate surface of the locking plate body 12, which can be freely engaged with and detached from the upper edge of the funnel main body portion 6. Gap (the funnel body portion 6
It is preferable that the thickness is slightly wider than the wall thickness of 11).

Therefore, the eddy current prevention member 8 is arranged so that the width direction side end surface 9a of the elongated plate body 9 is opposed to the inner wall surface of the funnel main body part, and the gap 11 is formed between the upper edge part of the funnel main body part 6. It is now possible to engage.

When injecting a sample into the sample cell 3, the spout portion 7 of the funnel 5 is inserted into the inlet/outlet 4 of the sample cell 3, and before and after this, the elongated plate of the vortex prevention member 8 is inserted. 9 is inserted into the funnel body part 6, and the eddy current prevention member 8 is engaged with the upper edge of the funnel body part 6 through the gap 11.

In this state, when a liquid analysis sample is injected from above the funnel 5, the sample is injected into the sample cell 3 without creating a vortex due to the presence of the plate 9 in the funnel 5, and therefore without introducing air bubbles. It is.

Since the plate 9 for preventing eddy currents has an elongated shape, the liquid injection part of the funnel main body part 6 is not divided by the plate 9, and therefore, the liquid can be poured at a location other than the elongated plate 9. If the liquid is poured, the entire volume of the funnel body portion 6 can be used to inject the liquid without splashing or foaming the sample.

Since the eddy current prevention member 8 can be easily engaged and detached from the funnel main body portion 6, the eddy current prevention member 8 can be applied to a commonly used ready-made funnel. Moreover, since the eddy current prevention member 8 can be freely engaged and detached, it is extremely easy to clean not only the eddy current prevention member 8 itself but also the funnel 5 itself. Therefore, it is suitable for injection of a different type of sample or injection of a sample after being left for a long period of time.

As described above, according to the present invention, it is possible to reliably prevent the generation of eddy currents during sample injection and the incorporation of air bubbles into the sample due to the eddy currents, thereby preventing the occurrence of measurement errors due to air bubbles.

In addition, the eddy current prevention member can prevent the generation of eddy currents, and the eddy current prevention member can also prevent splashing and foaming, making it possible to inject the sample into the funnel more slowly than in conventional methods. This eliminates the need for quiet injection and enables rapid sample injection.

Furthermore, it is easy to clean the eddy current prevention member and the funnel, and it is possible to easily provide the function of a eddy current prevention member to a ready-made funnel by simply preparing an extremely simple eddy current prevention member. Overall, all of the conventional drawbacks have been overcome by simple improvements.

[Brief explanation of drawings]

1 and 2 show conventional examples, respectively, with FIG. 1 being a longitudinal sectional view and FIG. 2 being a perspective view. FIGS. 3 and 4 show an embodiment of the present invention, with FIG. 3 being a perspective view and FIG. 4 being a longitudinal sectional view. 3...sample cell, 6...funnel main body part, tail...eddy current prevention member, 9...elongated plate, 9a...1 Side end portion, 10... bending piece, 11... gap, 12... locking plate portion.

Claims (1)

[Scope of Claim for Utility Model Registration] ■ A funnel for injecting a liquid analysis sample into a sample cell of an analyzer, which is provided with a locking plate at one end in the longitudinal direction of an elongated plate, and the locking plate A gap is formed between the plate surface of the body and the width direction side end surface of the elongated plate body so that the upper edge of the funnel body portion can be freely engaged and detached, thereby forming a vortex prevention member;
The eddy current prevention member is engaged with the upper edge of the funnel body with the widthwise side end surface of the elongated plate in contact with the inner wall surface of the funnel body with the gap therebetween. A funnel for injecting liquid analysis samples. (2) A bent piece that is L-shaped when viewed in the longitudinal direction of the elongated plate is formed on one longitudinal end of the elongated plate, and the locking plate is fixed to the bent piece. A funnel for liquid analysis sample injection according to claim 1 of the utility model registration claim, characterized in that: