JP2003344236A - Method and device for sampling fixed amount of liquid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the sampling amount of a liquid changed easily, and to precisely sample the regular amount of the liquid. <P>SOLUTION: In this method for sampling the fixed amount of the liquid using a fixed amount liquid sampling device D provided with a storage container 3 having an exit port 1 for delivering the stored liquid S and a tube body insertion opening 2, a tube body 4 of which the one end is inserted extractably from the insertion port 2 into an inside of the container 3, and having a liquid supplying part 4b in the other end, and a liquid introducing part 4a for introducing the liquid S into the container 3, the liquid S is introduced from the liquid introducing part 4a into the container 3 to bring a condition where a liquid level of the liquid S is positioned in a position higher than an upper end of tube body 4, the liquid S is delivered thereafter from the exit port 1 under the condition where the liquid S stored in the tube body 4 is held, and the liquid S stored in the tube body 4 is supplied form the liquid supplying part 4b to a liquid supplying object 19. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a liquid quantitative sampling method and device.

[0002]

2. Description of the Related Art FIG. 10 shows a conventional liquid quantitative sampling method.
There is one using the liquid quantitative sampling device shown in. That is, the liquid quantitative sampling device has an inlet 31 for introducing the liquid S therein, a liquid level detecting means 32 in the upper portion, and one end of an air flow passage 33 connected to the upper portion. A storage container 34, a tube body 35 that passes through the bottom wall of the storage container 34, and a liquid supply flow path 36 for supplying the liquid S in the tube body 35 to a liquid supply target are provided.

One end of a liquid introduction path 37 is connected to the introduction port 31, and the other end of the liquid introduction path 37 is connected to the other end.
A liquid source 38 is connected.

The other end of the air flow passage 33 is branched, a pump 40 is provided in one of the flow passages 39, and a switching valve 42 is provided in the other flow passage 41. In addition, the tip communicates with the atmosphere.

In the liquid quantitative sampling method using the liquid quantitative sampling device having the above structure, the pump 40 is driven to introduce the liquid S from the introduction port 31 into the storage container 34. This introduction is performed until the liquid level detection means 32 detects the liquid S, and at the time of this introduction, the switching valve 43 provided on the lower end side of the tube body 35 is in a closed state, and The switching valve 42 is also closed.

When the introduction of the liquid S is completed, the driving of the pump 40 is stopped and the switching valve 4
2 is opened, the liquid S in the storage container 34 is opened.
Will be returned from the inlet 31 to the liquid source 38.

After the above operation is completed, the switching valve 43 is opened to supply the liquid S contained in the tube body 35 from the liquid supply passage 36 to the liquid supply target. It will be. Since the amount of the liquid S to be stored from the upper end of the tube body 35 to the switching valve 43 is known in advance, according to the above liquid quantitative sampling method, a fixed amount of the liquid S with respect to the liquid supply target.
Can be supplied.

[0008]

However, in the liquid quantitative sampling method and device having the above-mentioned configuration, since the tube body 35 is fixed to the storage container 34, the sampling amount of the liquid S cannot be changed. There was a problem.

When the tube body 35 is particularly thin, an air layer may be formed inside the tube body 35 when the liquid S enters the tube body 35 from the upper end side. If the air layer is formed, an error will occur in the amount of the liquid S collected.

The present invention has been made in view of the above matters, and an object thereof is to provide a liquid quantitative sampling method and device capable of easily changing the sampling amount of a liquid and accurately quantitatively sampling the liquid. It is to be.

[0011]

In order to achieve the above object, the liquid quantitative sampling method of the present invention is a storage container having a discharge port for discharging the stored liquid and a tube body insertion opening, and one end A liquid meter having a tube body that is removably inserted into the storage container through the tube body insertion opening and has a liquid supply unit at the other end, and a liquid introduction unit for introducing a liquid into the storage container. A method for quantitatively collecting a liquid using a sampling device, wherein the liquid is introduced into the storage container from the liquid introducing part, and the liquid level of the liquid is at a position higher than the upper end of the tube body, and then the tube The liquid contained in the storage container is discharged from the discharge port while the liquid contained in the body is held, and the liquid contained in the tube is supplied from the liquid supply unit to the liquid supply target (claim 1). .

With the above-described structure, it is possible to provide a liquid quantitative sampling method capable of easily changing the sampling amount of the liquid and accurately quantitatively sampling the liquid.

On the other hand, the liquid quantitative sampling device of the present invention has a storage container having a discharge port for discharging the contained liquid and a tube body insertion opening, and one end from the tube body insertion opening to the inside of the storage container. A tube body that is removably inserted and has a liquid supply portion at the other end, and a liquid introduction portion for introducing the liquid into the storage container are provided (claim 2).

Further, a storage container having a discharge port for discharging the stored liquid and a tube body insertion opening, one end is inserted into the storage container from the tube body insertion opening, and the other end is a liquid supply portion. It is also possible to provide a tube body having the above and a liquid introduction part for introducing a liquid into the storage container, and to connect a branch flow path to an intermediate part of the tube body (claim 3).

Further, the capacity of the tube body may be variable (claim 4).

With the above structure, it is possible to provide a liquid quantitative sampling device capable of easily changing the sampling amount of liquid and accurately sampling the liquid quantitatively.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view schematically showing the configuration of a liquid quantitative sampling device D for carrying out the liquid quantitative sampling method according to the first embodiment of the present invention, and FIG. 2 is a main part of the liquid quantitative sampling device D. It is an explanatory view showing roughly the composition of. The liquid quantitative sampling device D includes a storage container 3 having a discharge port 1 for discharging the stored liquid S and a tube body insertion opening 2 in the lower portion, and one end of the storage container 3 from the tube body insertion opening 2. A tube body 4 insertably and removably inserted into the inside, a liquid introducing portion 4a for introducing the liquid S into the storage container 3, a liquid introducing passage 5 connected to the liquid introducing portion 4a, and the tube body. 4 is provided at the other end of 4, and is connected to the liquid supply portion 4b,
The liquid S in the tube body 4 is supplied to the liquid supply target 19 (see FIG.
A liquid supply path 6 for supplying the liquid to the liquid.

The liquid quantitative sampling device D supplies, for example, a predetermined amount of water sampled from a river, a lake, a pond or the like to the water quality measuring device as the liquid supply target 19 as the sample (the liquid S). Can be used for.

The liquid S is, for example, a sample liquid used for analysis by an analyzer such as the water quality measuring instrument or a reagent used for causing a predetermined chemical reaction.

The discharge port 1 is connected to a discharge flow path 1b having an opening / closing valve 1a made of, for example, an electromagnetic valve, and the liquid S discharged from the discharge port 1 passes through the discharge flow path 1b and will be described later. It is returned to the liquid container 18 (see FIG. 3).

The storage container 3 has a substantially cylindrical (for example, cylindrical) guide portion 7 extending downward from the peripheral edge of the tube body insertion opening 2.

Further, the storage container 3 has a liquid level detecting means 8 for detecting the liquid level of the liquid S introduced therein at the upper part. The liquid level detection means 8 is, for example, the liquid S.
Has a pair of lead wires 9 and 9 which are short-circuited by making contact with the lead wire 9 so that the tip of each lead wire 9 is located higher than the upper end of the tube body 4 in the storage container 3. It is arranged.

Further, one end of the air flow passage 10 is connected to the upper portion of the storage container 3. The air flow passage 1
Reference numeral 0 has a pump 11 as a means for reducing the pressure inside the storage container 3, and, with respect to the air flow passage 10,
An atmosphere communication passage 12 for communicating the inside of the depressurized storage container 3 with the atmosphere is connected via a three-way switching valve 13.
The tip side of the atmosphere communication passage 12 is in communication with the atmosphere. The three-way switching valve 13 is, for example, a three-way solenoid valve, and is provided in the air flow passage 10 between the connecting portion of the air flow passage 10 and the storage container 3 and the pump 11.

Then, the air flow passage 10 and the pump 1
1, the atmosphere communication passage 12 and the three-way switching valve 13 constitute pressure adjusting means for adjusting the pressure state in the storage container 3.

The tube body 4 is made of Teflon (registered trademark), for example. The tube body 4 may be made of, for example, glass, nylon, fluororesin or the like.

The tube body 4 is inserted into the storage container 3 from one end (upper end) side of the tube body 4 so that one end surface (upper end surface) is horizontal and the other end side is formed. The liquid introduction part 4a and the liquid supply part 4b.
The liquid introduction passage 5 and the liquid supply passage 6 are connected to them via the switching valve portion 14.

More specifically, the other end of the tube body 4 is bifurcated, and the switching valve 14a is provided in one of the liquid introducing portions 4a.
The liquid introduction passage 5 is connected via the liquid supply passage 4 and the liquid supply passage 6 is connected to the other liquid supply portion 4b via the switching valve 14b. Then, the switching valves 14a, 1
The switching valve portion 14 is constituted by 4b. The switching valves 14a and 14b are, for example, two-way solenoid valves.

Further, the tube body 4 has a stretchable portion 15 at a portion to be inserted into the storage container 3. The expansion / contraction part 15 has a double pipe structure composed of an inner pipe part 15a and an outer pipe part 15b which are slidable with each other. By expanding / contracting the expansion / contraction part 15, the capacity of the tube body 4 is changed. Therefore, in other words, the capacity of the tube body 4 is variable. The expansion / contraction amount of the expansion / contraction part 15 is, for example,
It is 1-2 cm. In the present embodiment, a small diameter portion having a small outer diameter is formed on the one end side portion of the tube body 4,
The small diameter portion is used as the inner pipe portion 15a, while the outer pipe portion 15b is formed by using a substantially cylindrical member that slides along the outer wall of the inner pipe portion 15a. Of course, it is not limited to the configuration in which the one end side portion of the tube body 4 is used as the inner pipe portion 15a. For example, the one end side portion of the tube body 4 is used as the outer pipe portion 15b, and the inner pipe portion 1 is used.
5a may be formed by using a substantially cylindrical member that slides along the inner wall of the outer tube portion 15b.

Further, the tube body 4 is substantially cylindrical (cylindrical) and has an elastic material (for example, rubber).
It is attached to the tube body insertion opening 2 by the attachment member 16 consisting of. This mounting member 16 is
The tube body 4 is configured to be inserted therethrough, and has a groove portion 17 into which the lower end portion of the guide portion 7 is fitted in an upper portion thereof.

The groove portion 17 is formed by an inner cylinder portion 17a along the inner wall of the guide portion 7 and an outer cylinder portion 17b connected to the inner cylinder portion 17a and extending along the outer wall of the guide portion 7.

Then, the inner cylindrical portion 17a of the groove 17 is formed.
Is configured so as to fill the gap formed between the tube body 4 and the guide portion 7, and thus the attachment member 16 has the tube body 4 and the tube body insertion opening 2 ( A function as a packing that prevents the liquid S from leaking out from the gap formed between the guide portion 7) is provided. In other words,
An attachment member 16 for attaching the tube body 4 to the tube body insertion opening 2 is used as a packing for preventing the liquid S from leaking out from a gap formed between the tube body 4 and the tube body insertion opening 2. Is also used.

The tube body 4 having the above structure is inserted into the storage container 3 such that the one end surface (upper end surface) is located higher than the discharge port 1 in the storage container 3.

In this embodiment, the tube body 4 also has the liquid introducing portion 4a at the lower end (the other end), and the liquid introducing passage 5
The liquid S from is introduced into the storage container 3 via the tube body 4, and the upstream end of the liquid introduction path 5 is a liquid storage portion serving as a supply source of the liquid S. It is in a state of being immersed in the liquid S contained in 18. The liquid introducing part 4 a is provided not in the other end of the tube body 4 but in the storage container 3, and is configured to introduce the liquid S into the storage container 3 without the tube body 4. Alternatively, for example, the liquid introducing passage 5 may be directly connected to the liquid introducing portion 4a provided in the storage container 3.

FIGS. 3A to 3D are explanatory views schematically showing the operation of the liquid quantitative sampling device D. Next, the operation of the liquid quantitative sampling device D having the above configuration will be described. First, the on-off valve 1a and the switching valve 14b are closed and the switching valve 14a is opened, and
The three-way solenoid valve 13 is switched so that the pump 11 and the storage container 3 are in communication with each other, and the atmosphere communication passage 12 and the air flow passage 10 are not in communication with each other.

When the pump 11 is driven, the air A in the storage container 3 is discharged to the pump 11 side, the pressure inside the storage container 3 is reduced, and the liquid S stored in the liquid storage portion 18 is As shown in FIG. 3A, the liquid is introduced into the storage container 3 through the liquid introduction passage 5 and the tube body 4.

The liquid S introduced into the storage container 3 as described above is stored in the storage container 3, and the storage amount thereof continues to increase. Then, as shown in FIG.
When the liquid level of the liquid S is detected by the liquid level detection means 8, the driving of the pump 11 is stopped and the introduction of the liquid S into the storage container 3 is also stopped. At this time, the liquid surface of the liquid S is at a position higher than the upper end of the tube body 4.

Subsequently, the switching valve 14a is closed, the opening / closing valve 1a is opened, and the three-way switching valve 13 is switched so that the inside of the storage container 3 and the atmosphere communication passage 12 are communicated with each other. As a result, the inside of the storage container 3 communicates with the atmosphere via the atmosphere communication path 12, the pressure inside the storage container 3 is restored, and the liquid S in the storage container 3 is returned as shown in FIG. It will be discharged from the discharge port 1 to the discharge flow path 1b. The liquid S discharged to the discharge flow path 1b returns to the liquid storage portion 18, and at this time, the tube body 4
The liquid S contained therein is in a held state.

The discharge of the liquid S causes a predetermined amount of the liquid S to remain only in the tube body 4, and by opening the switching valve 14b, the predetermined amount of the liquid S is led to the liquid supply passage 6. After that, the liquid is supplied to the liquid supply target 19.

In the liquid quantitative sampling device D having the above structure, the inner tube portion 1 of the expandable portion 15 of the tube body 4 is
The amount of the liquid S contained in the tube body 4 can be freely adjusted / changed by sliding the 5a and the outer tube portion 15b relatively to each other to extend and retract the extendable portion 15.

Further, in the liquid quantitative sampling device D having the above-mentioned configuration, since the liquid S is introduced into the storage container 3 from the lower side of the tube body 4 through the inside thereof, the pipe other than the tube body 4 is used. Like the conventional liquid quantitative sampling device for introducing the liquid S into the storage container 3, the tube body 4
There is no possibility that an air layer will be formed inside, and it becomes possible to quantitatively sample the liquid S with high accuracy.

Further, in the liquid quantitative sampling device D having the above structure, the tube body 4 is attached to the guide portion 7 by using the attaching member 16 fitted in the tube body 4, and the tube body 4 and the guide portion are attached. 7 (tube body insertion opening 2) is closed by the mounting member 16 and the liquid S in the storage container 3 does not leak from the gap, so that the diameter of the tube body 4 is small. The guide portion 7 (a tube body insertion opening 2)
Can be freely changed within a range (for example, 1 to 8 mm) that can be inserted into the tube. By changing the diameter of the tube body 4, it is possible to freely change the sampling amount of the liquid S.
The diameter of the tube body 4 is, for example, 1 mm, 2 mm, 4
mm, 6 mm, and 8 mm, and the amount of the liquid S stored in the tube body 4 is, for example, 0.1 to 10 mL.
And it is sufficient.

Further, since the excess liquid S is recovered without being contaminated, the recovered liquid S can be reused, and the resource saving effect can be obtained.

Here, since the liquid quantitative sampling method of the present invention uses the liquid quantitative sampling device D, the same effect as the above can be obtained by the liquid quantitative sampling method.

In the above embodiment, the inner tube portion 1
A scale (not shown) may be formed at an appropriate position between the 5a and the outer tube portion 15b, and this scale may be used as a standard for the amount of the liquid S that can be contained in the tube body 4. In this case, the amount of the liquid S to be collected can be adjusted more easily.

Further, as shown in FIG. 4, the liquid level detecting means 8 is provided with a light irradiating section 20 composed of, for example, a light emitting diode.
And a light detection section 21 for detecting the light from the light irradiation section 20.
May be formed in the upper part of the storage container 3 and arranged inside the storage container 3 at positions sandwiching the flow path 22 through which the liquid S and the air A flow. In the liquid level detection means 8'having the above structure, the light irradiation unit 20 to the light detection unit 2 are used.
When the liquid surface of the liquid S rises and the amount of light received by the photodetector 21 decreases due to the liquid S, the liquid surface is detected. Here, it is desirable that the diameter of the flow passage 22 is small, because the amount of light emitted from the light emitting unit 20 can be reduced. The air flow passage 10 can be used as the flow path 22, for example.

Further, the switching valve portion 14 is not limited to the one including the two switching valves 14a and 14b, and, for example, as shown in FIG. 4, the other end of the tube body 4 is not divided into two branches and is divided. In addition to the two switching valves 14a and 14b, another switching valve 14c may be provided at the other end of the tube body 4 which is not bifurcated. In this case, both the liquid introduction part 4a and the liquid supply part 4b are formed at the same part at the other end (near the other end) of the tube body 4. Then, in this case, when the liquid S is introduced into the storage container 3 from the liquid storage portion 18 shown in FIGS. 3A and 3B, the switching valve 14c is opened, and FIG. When the liquid S is discharged from the storage container 3 shown in FIG.
4b may be opened and the switching valve 14c may be closed.
Then, when the liquid S shown in FIG. 3D is supplied, the switching valve 14a may be closed and the switching valves 14b and 14c may be opened. At this time, the amount of the liquid S supplied is equal to that of the tube body 4
The amount of the liquid S stored above the switching valve 14c.

Further, in the above embodiment, the expansion / contraction part 15 is provided in the upper portion of the tube body 4, but the invention is not limited to such a configuration, and the expansion / contraction part 15 is provided in the storage container 3 of the tube body 4. It may be provided in the lower part which is not inserted therein. Of course, the expandable part 15 may be provided in both the upper part and the lower part of the tube body 4.

Further, the expansion / contraction part 15 is not limited to the one having the double pipe structure of the inner pipe part 15a and the outer pipe part 15b. For example, the tube body 4 is provided with a bellows part, and this bellows part is formed into the expansion / contraction part 15. It may be used as.

Further, in order to make the volume of the liquid S contained in the tube body 4 variable, the tube body 4 may be provided with an expansion / contraction portion 15 so that the tube body 4 can be expanded / contracted. However, the volume of the liquid S contained in the tube body 4 may be freely set by, for example, replacing or cutting the tube body 4 with an appropriate length. The volume of the liquid S contained in the tube body 4 may be arbitrarily set by selecting and using the tube body 4 having an appropriate inner diameter from the plurality of different tube bodies 4, 4.

Further, instead of the two switching valves 14a and 14b constituting the switching valve portion 14, a three-way switching valve (not shown), which is, for example, a three-way solenoid valve, may be provided in the tube body 4. Good.

FIG. 5 is an explanatory view schematically showing the constitution of a liquid quantitative sampling device D ₂ for carrying out the liquid quantitative sampling method according to the second embodiment of the present invention. The members having the same structure as those shown in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. The liquid quantitative sampling device D ₂ of the second embodiment has the storage container 3 having the discharge port 1 for discharging the stored liquid S and the tube body insertion opening 2 in the lower part, and the storage container 3 A tube body 44 into which one end (one end side) thereof is removably inserted into the inside of the storage container 3 through the tube body insertion opening 2, and the storage provided on the other end (other end side) of the tube body 44. A liquid introducing passage 46 connected via a switching valve 45 to a portion serving as the liquid introducing portion 44A for introducing the liquid S into the container 3 and also serving as the liquid supplying portion 44B, and also serves as the liquid introducing portion 44A. The tube body 44 is connected to a portion that also serves as the liquid supply portion 44B via a switching valve 45.
A liquid supply path 6 for supplying the liquid S therein to the liquid supply target 19, a branch flow path 47 connected to an intermediate portion (between one end and the other end) of the tube body 44, and the storage container 3 And a pressure adjusting means 48 for adjusting the internal pressure state.

The discharge port 1 of the storage container 3 is connected to a discharge flow path 1b having an opening / closing valve 1a composed of, for example, an electromagnetic valve, and the liquid S discharged from the discharge port 1 flows through the discharge flow path 1b. Then, the liquid is returned to the inside of the liquid storage portion 18 described later.

The tube body 44 has a first tube 44a and a second tube 44b in order from one end side thereof, and both 44a and 44b are connected via a connecting member 49.

The connecting member 49 is, for example, a T-shaped tube having three connecting ports 50a, 50b, 50c communicating with each other. More specifically, the connecting member 49 is provided with the connecting ports 50a and 50b at both ends. First tube portion 49a
And a second pipe portion 49b having one end connected to the central portion of the first pipe portion 49a and the connection port 50c provided at the other end.

The liquid detecting means 51 is provided at an intermediate portion of the first tube 44a. This liquid detection means 5
1 has the same structure as the liquid level detection means 8'shown in FIG. 4, and includes a light irradiation section 51a made of, for example, a light emitting diode, and a light detection section 51b for detecting light from the light irradiation section 51a. Are arranged at positions sandwiching the first tube 44a. In the liquid detecting means 51 having the above-described configuration, the light irradiating section 51a irradiates the light to the light detecting section 51b. When the liquid S passes through the first tube 44a, the liquid S causes the light detecting section 51b to move. The amount of received light is reduced, whereby the circulation of the liquid S in the first tube 44a is detected.

The switching valve 45 is, for example, a three-way switching valve (three-way solenoid valve) having three ports 45a, 45b and 45c, and the port 45a has the second tube 4 therein.
4b are connected, the liquid introduction path 46 is connected to the port 45b, and the liquid supply path 6 is connected to the port 45c.

The liquid introducing passage 46 is, as described above,
One end thereof is connected to the port 45b of the switching valve 45, and the other end is in a state of being immersed in the liquid S stored in the liquid storage portion 18 serving as the supply source of the liquid S. Further, the liquid introduction path 46 has an opening / closing valve 52 which is, for example, an electromagnetic valve. In addition, in the present embodiment, the tube body 44 has the liquid introduction part 4 at the lower end (the other end).
4A, and the liquid S from the liquid introduction path 46 is configured to be introduced into the storage container 3 via the tube body 44. Provided in the storage container 3 instead of at the other end,
The liquid S may be introduced into the storage container 3 without passing through the tube body 44. For example, the liquid introduction path 46 may be provided in the liquid introduction part 44A provided in the storage container 3. It may be directly connected.

As described above, one end of the branch flow path 47 is connected to the connection port 50c of the connection member 49, and the liquid S sent into the branch flow path 47 is supplied from the other end to the liquid storage portion. It is configured so that it can be returned (derived) to 18. Further, the branch flow path 47 has an opening / closing valve 53 which is, for example, an electromagnetic valve.

The pressure adjusting means 48 has a single flow path 54 having one end connected to the storage container 3, an annular flow path 55 connected to the other end of the single flow path 54, and the single flow path 54. And an atmosphere communication passage 56 provided so as to branch from.

In the annular flow passage 55, counterclockwise from the connection portion 55a with the other end of the single flow passage 54,
A three-way switching valve 57, a pump 58, and another three-way switching valve 59 are provided.

The three-way switching valve 57 is composed of, for example, a three-way solenoid valve, and has a port 57a to which the first flow passage 60 between the connecting portion 55a of the annular flow passage 55 and the three-way switching valve 57 is connected, and a three-way switching valve. It has a port 57b connected to the second flow path 61 between the valve 57 and the pump 58, and a port 57c communicating with the outside (atmosphere).

The three-way switching valve 59 is, for example, a three-way solenoid valve, and has a port 59a connected to the third flow passage 62 between the pump 58 and the three-way switching valve 59, the three-way switching valve 59 and the annular flow. It has a port 59b connected to the fourth flow path 63 between the connection portion 55a of the passage 55 and a port 59c communicating with the outside (atmosphere).

The atmosphere communication passage 56 has an opening / closing valve 64, which is, for example, a solenoid valve, and the tip thereof is outside (atmosphere).
It has been opened to.

FIGS. 6 (A)-(D) and 7 (A)-
(D) is an explanatory view schematically showing the operation of the liquid quantitative sampling device D ₂ . Next, the operation of the liquid quantitative sampling device D _{2 having} the above configuration will be described. First, the on-off valve 1
a, 53, 64 are closed, the on-off valve 52 is opened, the three-way switching valve 45 is switched, and the liquid is introduced to communicate with the ports 45a and 45b. To switch the port 57a
And 57b are communicated with each other, and the three-way switching valve 59 is operated to be switched to a gas discharge state where the ports 59a and 59c are communicated with each other.

Then, when the pump 58 of the pressure adjusting means 48 is driven, the air A in the storage container 3 passes through the single channel 54 to reach the annular channel 55, and the annular channel 55.
After passing through the first flow path 60, the second flow path 61, and the third flow path 62, the three-way switching valve 59 is guided to the outside (in the atmosphere), and thus the inside of the storage container 3 is discharged. By drawing out the air A to the outside, the inside of the storage container 3 is decompressed, and the liquid S contained in the liquid container 18 is changed to the liquid S shown in FIG.
As shown in FIG.
It goes through the inside to the inside of the storage container 3.

The liquid S flowing inside the tube body 44 into the storage container 3 as described above is detected by the liquid detecting means 51, and after a predetermined time has elapsed from this detection, the pump 58 The drive is configured to stop. The liquid S in the liquid container 18 is continuously introduced into the storage container 3 and is stored in the storage container 3 between the detection by the liquid detection means 51 and the driving of the pump 58 is stopped. Therefore, when the drive of the pump 58 is stopped, the liquid level of the liquid S stored in the storage container 3 is at a position higher than the upper end of the tube body 44.

Here, by driving the pump 58,
When the liquid S is introduced from the liquid storage portion 18 into the storage container 3, an air layer is formed in the space between the connection member 49 and the opening / closing valve 53 in the branch flow path 47, so that in this space. The liquid S is never introduced.

Subsequently, the opening / closing valve 52 is closed, and the opening / closing valve 1a and the opening / closing valve 64 are opened. As a result, the inside of the storage container 3 communicates with the atmosphere via the atmosphere communication passage 56, the pressure inside the storage container 3 is restored, and as shown in FIG.
The liquid S in the storage container 3 is discharged from the discharge port 1 to the discharge flow path 1b. The liquid S discharged to the discharge flow path 1b returns to the liquid storage portion 18, and at this time, the liquid S stored in the tube body 44 is held. Further, the liquid S in the space between the three-way switching valve 45 and the opening / closing valve 52 in the liquid introduction path 46 is in a state of being held without returning to the liquid storage portion 18.

By discharging the liquid S, as shown in FIG. 6C, a predetermined amount Q ₁ of the liquid S is stored only in the tube body 44.
Is left, and the three-way switching valve 45 is operated to be switched to a liquid discharge state in which the ports 45a and 45c communicate with each other, so that a predetermined amount of liquid Q ₁ is supplied, as shown in FIG. 6D. S is led to the liquid supply path 6,
After that, the liquid is supplied to the liquid supply target 19.

In the liquid quantitative sampling device D _{2 having the} above structure, the liquid contained in the tube body 44 is discharged by discharging the liquid from the branch flow passage 47 connected to the intermediate portion of the tube body 44. The liquid level height of S can be changed (changeable).

More specifically, the liquid quantitative sampling device D of this embodiment.
_{In 2} , when the liquid S is filled up to the upper end of the tube body 44 (that is, in the above case), a predetermined amount Q ₁ of the liquid S is added.
The is as it can supply, when filled with the liquid S to the upper end of the second tube 44b of the tube body 44 is able supplying the predetermined amount Q a liquid S in small predetermined amount Q ₂ than _1. Hereinafter, the case of supplying a predetermined amount Q ₂ of liquid S will be described.

First, the opening / closing valves 1a, 53, 64 are closed, the opening / closing valve 52 is opened, and the three-way switching valve 45 is switched to introduce the liquid introduced through the ports 45a and 45b. State, the three-way switching valve 5
7 is switched to a gas passage state in which the ports 57a and 57b communicate with each other, and the three-way switching valve 59 is switched to a gas discharge state in which the ports 59a and 59c communicate.

When the pump 58 of the pressure adjusting means 48 is driven, the air A in the storage container 3 reaches the annular flow passage 55 through the single flow passage 54 and the annular flow passage 55.
After passing through the first flow path 60, the second flow path 61, and the third flow path 62, the three-way switching valve 59 is guided to the outside (in the atmosphere), and thus the inside of the storage container 3 is discharged. As the air A is led to the outside, the inside of the storage container 3 is decompressed, and the liquid S stored in the liquid storage portion 18 is changed to the liquid S shown in FIG.
As shown in FIG.
It goes through the inside to the inside of the storage container 3.

The liquid S flowing in the tube body 44 into the storage container 3 as described above is detected by the liquid detecting means 51, and substantially simultaneously with this detection or after a predetermined time has elapsed from the detection. The driving of the pump 58 is stopped. It is not necessary to store the liquid S in the storage container 1, and the liquid surface of the liquid S in the tube body 44 may be in a position higher than the upper end of the second tube 44b.

Subsequently, the on-off valve 52 is closed and the on-off valve 1a, the on-off valve 53 and the on-off valve 64 are opened. As a result, the inside of the storage container 3 communicates with the atmosphere via the atmosphere communication passage 56, the pressure inside the storage container 3 is restored, and the liquid S in the first tube 44a is returned as shown in FIG. Is returned from the branch flow path 47 to the liquid storage portion 18, and when the liquid S is introduced into the storage container 3, the liquid S in the storage container 3 flows from the discharge port 1 to the discharge flow path 1b. Will be discharged. At this time, the liquid S contained in the second tube 44b is held. Further, the liquid S in the space between the three-way switching valve 45 and the opening / closing valve 52 in the liquid introducing passage 46 is
It is held without returning to.

After the above operation, the on-off valve 64 is closed,
The port 57c is operated by switching the three-way switching valve 57.
And 57b are brought into communication with each other, and the three-way switching valve 59 is operated to switch the ports 59a and 59b.
It is in a gas passage state in which b communicates. Then, when the driving of the pump 58 is restarted in this state, air is introduced from the three-way switching valve 57 into the annular flow passage 55, and the introduced air is supplied to the second flow passage 61, the third flow passage 62, and the fourth flow passage. It reaches the single flow path 54 through the flow path 63, and the inside of the storage container 3 is pressurized.

By applying the above-mentioned pressurization, the excess liquid S above the upper end of the second tube 44b in the tube body 44 is surely returned from the branch flow passage 47 to the liquid storage portion 18. become. The on-off valve 1a may be closed when performing the pressurization.

By discharging the liquid S, as shown in FIG. 7C, a predetermined amount Q ₂ of the liquid S remains in only the second tube 44b, and the three-way switching valve 45 is switched. By setting the liquid discharge state in which the ports 45a and 45c communicate with each other, as shown in FIG. 7D, a predetermined amount Q ₂ of the liquid S is led to the liquid supply passage 6, and then the liquid supply target 19 will be supplied.

Liquid quantitative sampling device D _{2 having the} above structure
Then, by adjusting the liquid surface height of the liquid S stored in the tube body 44 in two steps, the amount of the liquid S stored in the tube body 44 can be changed.

Further, in the liquid quantitative sampling device D _{2 having the} above-mentioned structure, the tube body 4 is provided with respect to the storage container 3.
Since the liquid S is introduced from the lower side of the tube 4, there is no possibility that an air layer is formed in the tube body 44, and the liquid S can be quantitatively sampled with high accuracy.

Further, although the amount (supply amount) of the liquid S to be collected becomes the predetermined amounts Q ₁ and Q ₂ , the tube body 44 (first tube 44a, second tube 44b) is set to an appropriate length. only cleave the like, the predetermined amount Q _1, Q ₂
Can be set freely.

Further, since the tube diameter of the tube body 44 can be arbitrarily selected, a small amount to a medium amount (0.1 to 10 mL)
It becomes possible to accurately and quantitatively collect the liquid S. Here, the predetermined amount Q ₁ is 10 mL and the predetermined amount Q ₂ is 0.2 m
As a result of performing each quantitative sampling operation 50 times as L,
The relative standard deviation was 0.5% or less.

Further, since the excess liquid S is recovered without being contaminated, the recovered liquid S can be reused and a resource saving effect can be obtained.

Further, by performing the detection by the liquid detecting means 51, the occurrence rate of mistakes in quantitative sampling decreases, and when the liquid S is insufficient, the liquid detecting means 51 is informed of the shortage. It is also possible to detect by.

Further, since the structure is simple, it can be manufactured at a low price, and the number of places where failures and malfunctions occur can be extremely reduced.

Here, since the liquid quantitative sampling method according to the second embodiment of the present invention uses the liquid quantitative sampling device D ₂ , the same effect as above can be obtained by the liquid quantitative sampling method. You can

In the second embodiment, the T-shaped tube is used as the connecting member 49, but the structure is not limited to this. For example, as shown in FIG. 8, the first tube 44a is used. A port 65a to which the second tube 44b is connected, a port 65c to which the branch flow passage 47 is connected, and a state in which the ports 65a and 65b communicate with each other; 6
It is also possible to use a three-way switching valve (three-way solenoid valve) 65 that is switched to a state in which 5a and 65c are in communication. In this case, the inside of the storage container 3 is pressurized and the tube body 4 is
When the excess liquid S above the upper end of the second tube 44b in 4 is returned from the branch flow path 47 to the liquid storage portion 18, the liquid S in the second tube 44b is discharged together with the excess liquid S. It is possible to reliably prevent the liquid S from being returned to the liquid storage portion 18, and to secure the predetermined amount Q ₂ of the liquid S in the second tube 44b.

In addition, the expansion / contraction part 15 shown in the first embodiment is
The tube body 44 (first tube 44 in the second embodiment)
a, the second tube 44b) may be provided.

Further, the liquid level detection means 8 shown in the first embodiment is provided in the storage container 3 in the second embodiment so that the liquid level S of the liquid S introduced into the storage container 3 can be detected. May be.

FIG. 9 is an explanatory view schematically showing the construction of a liquid quantitative sampling device D ₃ for carrying out the liquid quantitative sampling method according to the third embodiment of the present invention. The members having the same structures as those shown in the above two embodiments are designated by the same reference numerals, and the description thereof will be omitted. Compared with the liquid quantitative sampling device D ₂ of the second exemplary embodiment, the liquid quantitative sampling device D ₃ of the third exemplary embodiment is not limited to one branch flow path 47 for the tube body 44, but a plurality (as an example). Two) branch channels 47, 6
The difference is mainly that 6 is provided.

That is, the tube body 44 is connected to the first tube 44a via the connecting member 49.
And the second tube 44b, the third tube 44
The third tube 44c is connected to the second tube 44b through the connecting member 67. Further, the branch flow path 66 is connected to the tube body 44 via the connecting member 67.

The connecting member 67 has the same structure as that of the connecting member 49, and in this embodiment, the connecting member 67 has three connecting ports 68a, 68b, 68c which communicate with each other.
The connecting member 67 is a first pipe portion 67 having the connection ports 68a and 68b at both ends.
a and one end is connected to the central portion of the first pipe portion 67a,
The second pipe portion 67b is provided with the connection port 68c at the other end.

The liquid detecting means 69 is provided at an intermediate portion of the second tube 44b. This liquid detection means 6
9 has the same configuration as the liquid detecting means 51 in the second embodiment, and includes a light emitting section 69a composed of, for example, a light emitting diode and a light detecting section 69b for detecting light from the light emitting section 69a. , The second tube 44b is sandwiched between them. In the liquid detection means 69 having the above structure, the light irradiation section 69a is used.
When the liquid S passes through the inside of the second tube 44b by irradiating the photodetector 69b with light from the above, the amount of light received by the photodetector 69b is reduced by the liquid S, whereby the second tube 4b.
The circulation of the liquid S in 4b will be detected.

One end of the branch flow channel 66 is connected to the connection port 68c of the connection member 67, and the liquid S sent to the inside thereof is returned (derived) from the other end to the liquid storage portion 18. It is configured to be able to. Further, the branch flow path 66 has an opening / closing valve 70 which is, for example, an electromagnetic valve.

Next, the operation of the liquid quantitative sampling device D _{3 having} the above structure will be described. First, the on-off valve 1
a, 53, 64, 70 are closed, and the on-off valve 5
2 is opened, the three-way switching valve 45 is operated to be switched to a liquid introduction state in which the ports 45a and 45b communicate with each other, and the three-way switching valve 57 is operated to switch to a gas in which the ports 57a and 57b communicate with each other. In the passing state, the three-way switching valve 59 is switched to operate the ports 59a and 5
9c is in a gas discharge state in which it communicates.

Then, when the pump 58 of the pressure adjusting means 48 is driven, the air A in the storage container 3 passes through the single flow path 54 to reach the annular flow path 55, and the annular flow path 55.
After passing through the first flow path 60, the second flow path 61, and the third flow path 62, the three-way switching valve 59 is guided to the outside (in the atmosphere), and thus the inside of the storage container 3 is discharged. The air A is discharged to the outside, so that the inside of the storage container 3 is decompressed, and the liquid S stored in the liquid storage portion 18 passes through the liquid introduction passage 46 and the tube body 44 into the storage container 3. I will go to.

The liquid S flowing inside the tube body 44 into the storage container 3 as described above is detected by the liquid detecting means 51, and after a predetermined time has passed from this detection, the liquid of the pump 58 is detected. The drive is configured to stop. The liquid S in the liquid container 18 is continuously introduced into the storage container 3 and is stored in the storage container 3 between the detection by the liquid detection means 51 and the driving of the pump 58 is stopped. Therefore, when the drive of the pump 58 is stopped, the liquid level of the liquid S stored in the storage container 3 is at a position higher than the upper end of the tube body 44.

By driving the pump 58,
When introducing the liquid S from the liquid storage portion 18 into the storage container 3, the space between the connection member 49 and the opening / closing valve 53 in the branch flow passage 47, and the connection member 67 in the branch flow passage 66. Since an air layer is formed in each space between the on-off valve 70 and the on-off valve 70, the liquid S is not introduced into each space.

Subsequently, the opening / closing valve 52 is closed, and the opening / closing valve 1a and the opening / closing valve 64 are opened. As a result, the inside of the storage container 3 communicates with the atmosphere via the atmosphere communication passage 56, the pressure inside the storage container 3 is restored, and the liquid S in the storage container 3 flows from the discharge port 1 to the discharge flow path 1b. Will be discharged. The liquid S discharged to the discharge flow path 1b returns to the liquid storage portion 18, and at this time, the liquid S stored in the tube body 44 is held. Further, the liquid S in the space between the three-way switching valve 45 and the opening / closing valve 52 in the liquid introduction path 46 is in a state of being held without returning to the liquid storage portion 18.

By discharging the liquid S, the tube body 44
A predetermined amount Q ₃ of liquid S remains only in the inside, and the three-way switching valve 45 is operated to switch so that the port 45a and the port 45c communicate with each other, whereby the predetermined amount Q ₃ of liquid is discharged. S is led to the liquid supply path 6,
After that, the liquid is supplied to the liquid supply target 19.

In the liquid quantitative sampling device D ₃ , the liquid is discharged from the branch flow passage 47 or the branch flow passage 66 connected to the intermediate portion of the tube body 44 to be contained in the tube body 44. The liquid level of the liquid S can be changed in three steps.

More specifically, the liquid quantitative sampling device D of this embodiment.
_{In 3} , when the liquid S is filled up to the upper end of the tube body 44 (that is, in the above case), a predetermined amount Q ₃ of the liquid S is added.
When the liquid S is filled up to the upper end of the second tube 44b of the tube body 44, it is possible to supply the liquid S of a predetermined amount Q ₄ smaller than the predetermined amount Q ₃ of the liquid S. When S is filled up to the upper end of the third tube 44c of the tube body 44, the predetermined amount Q ₄
It is possible to supply a predetermined amount Q ₅ of liquid S that is smaller than the above. Hereinafter, (1) a case of supplying a predetermined amount Q ₄ of liquid S and (2) a case of supplying a predetermined amount Q ₅ of liquid S will be described.

(1) When supplying a predetermined amount Q ₄ of liquid S First, the on-off valves 1a, 53, 64, 70 are closed, the on-off valve 52 is opened, and the three-way switching valve 45 is opened. To switch the ports 45a and 45b.
Is in a liquid introduction state, the three-way switching valve 57 is operated to switch so that the ports 57a and 57b communicate with each other, and the three-way switching valve 59 is operated to operate so that the ports 59a and 59c communicate with each other. Set to the discharged state.

When the pump 58 of the pressure adjusting means 48 is driven, the air A in the storage container 3 passes through the single flow path 54 to reach the annular flow path 55, and the annular flow path 55.
After passing through the first flow path 60, the second flow path 61, and the third flow path 62, the three-way switching valve 59 is guided to the outside (in the atmosphere), and thus the inside of the storage container 3 is discharged. The air A is discharged to the outside, so that the inside of the storage container 3 is decompressed, and the liquid S stored in the liquid storage portion 18 passes through the liquid introduction passage 46 and the tube body 44 into the storage container 3. I will go to.

The liquid S flowing inside the tube body 44 into the storage container 3 as described above is detected by the liquid detecting means 51, and substantially simultaneously with this detection or after a predetermined time has elapsed from the detection. The driving of the pump 58 is stopped. It is not necessary to store the liquid S in the storage container 1, and the liquid surface of the liquid S in the tube body 44 may be in a position higher than the upper end of the second tube 44b.

Subsequently, the open / close valve 52 is closed, and the open / close valve 1a, the open / close valve 53 and the open / close valve 64 are opened. As a result, the inside of the storage container 3 communicates with the atmosphere via the atmosphere communication path 56, the pressure inside the storage container 3 is restored, and the liquid S in the first tube 44 a flows from the branch flow path 47 to the liquid storage portion 18. When the liquid S has been introduced into the storage container 3, the liquid S in the storage container 3 is discharged from the discharge port 1 to the discharge flow path 1b. At this time, the liquid S contained in the second tube 44b and the third tube 44c is held. Further, the liquid S in the space between the three-way switching valve 45 and the opening / closing valve 52 in the liquid introducing passage 46 is
It is held without returning to.

After the above operation, the on-off valve 64 is closed,
The port 57c is operated by switching the three-way switching valve 57.
And 57b are brought into communication with each other, and the three-way switching valve 59 is operated to switch the ports 59a and 59b.
It is in a gas passage state in which b communicates. Then, when the driving of the pump 58 is restarted in this state, air is introduced from the three-way switching valve 57 into the annular flow passage 55, and the introduced air is supplied to the second flow passage 61, the third flow passage 62, and the fourth flow passage. It reaches the single flow path 54 through the flow path 63, and the inside of the storage container 3 is pressurized.

By applying the above pressure, the excess liquid S above the upper end of the second tube 44b in the tube body 44 is surely returned from the branch flow passage 47 to the liquid storage portion 18. become. The on-off valve 1a may be closed when performing the pressurization.

By discharging the liquid S, the second tube 4
A predetermined amount Q ₄ of liquid S remains only in 4b and the third tube 44c, and the three-way switching valve 45 is switched to make a liquid discharge state in which the ports 45a and 45c communicate with each other. Predetermined amount Q ₄ of liquid S
Is led to the liquid supply path 6, and then the liquid supply target 1
9 will be supplied.

(2) When supplying a predetermined amount Q ₅ of liquid S First, the on-off valves 1a, 53, 64, 70 are closed, the on-off valve 52 is opened, and the three-way switching valve 45 is opened. To switch the ports 45a and 45b.
Is in a liquid introduction state, the three-way switching valve 57 is operated to switch so that the ports 57a and 57b communicate with each other, and the three-way switching valve 59 is operated to operate so that the ports 59a and 59c communicate with each other. Set to the discharged state.

When the pump 58 of the pressure adjusting means 48 is driven, the air A in the storage container 3 reaches the annular flow passage 55 through the single flow passage 54 and the annular flow passage 55.
After passing through the first flow path 60, the second flow path 61, and the third flow path 62, the three-way switching valve 59 is guided to the outside (in the atmosphere), and thus the inside of the storage container 3 is discharged. The air A is discharged to the outside, so that the inside of the storage container 3 is decompressed, and the liquid S stored in the liquid storage portion 18 passes through the liquid introduction passage 46 and the tube body 44 into the storage container 3. I will go to.

The liquid S flowing inside the tube body 44 into the storage container 3 as described above is detected by the liquid detecting means 69, and substantially simultaneously with this detection or after a predetermined time has elapsed from the detection. The driving of the pump 58 is stopped. The liquid S does not have to be stored in the storage container 1, and the liquid surface of the liquid S in the tube body 44 may be at a position higher than the upper end of the third tube 44c.

Subsequently, the opening / closing valve 52 is closed, and the opening / closing valve 1a, the opening / closing valve 53, the opening / closing valve 64 and the opening / closing valve 70 are opened. As a result, the storage container 3 passes through the atmosphere communication passage 56.
The inside communicates with the atmosphere, the pressure inside the storage container 3 returns to its original level,
The liquid S in the first tube 44a and the second tube 44b is returned from the branch channels 47, 66 to the liquid storage portion 18, and when the liquid S is introduced into the storage container 3, the storage container The liquid S in the liquid 3 flows from the discharge port 1 to the discharge flow path 1b.
Will be discharged to. At this time, the liquid S contained in the third tube 44c is held. Further, the liquid S in the space between the three-way switching valve 45 and the opening / closing valve 52 in the liquid introduction path 46 is in a state of being held without returning to the liquid storage portion 18.

After the above operation, the on-off valve 64 is closed,
The port 57c is operated by switching the three-way switching valve 57.
And 57b are brought into communication with each other, and the three-way switching valve 59 is operated to switch the ports 59a and 59b.
It is in a gas passage state in which b communicates. Then, when the driving of the pump 58 is restarted in this state, air is introduced from the three-way switching valve 57 into the annular flow passage 55, and the introduced air is supplied to the second flow passage 61, the third flow passage 62, and the fourth flow passage. It reaches the single flow path 54 through the flow path 63, and the inside of the storage container 3 is pressurized.

By applying the above-mentioned pressurization, the excess liquid S above the upper end of the third tube 44c in the tube body 44 is surely removed from the branch channels 47, 66.
Will be returned to the liquid storage portion 18. The on-off valve 1a may be closed when performing the pressurization.

By discharging the liquid S, the third tube 4
A predetermined amount Q ₅ of liquid S remains only in 4c,
The three-way switching valve 45 is switched to operate the port 45a.
By setting the liquid discharge state in which the port 45c and the port 45c communicate with each other, a predetermined amount Q ₅ of the liquid S is led to the liquid supply path 6 and then supplied to the liquid supply target 19.

Liquid quantitative sampling device D _{3 having the} above structure
Then, the amount of the liquid S stored in the tube body 44 can be changed by adjusting the liquid level height of the liquid S stored in the tube body 44 in three stages. That is, as described above, by collecting a connecting member and a branch flow path connected to this connecting member as one set in the intermediate portion of the tube body 44, and providing a single or plural set at any position, sampling The amount of the liquid S to be applied can be changed arbitrarily and easily.

The other effects obtained by the liquid quantitative sampling device D ₃ are the same as the effects obtained by the liquid quantitative sampling device D ₂ , and therefore description thereof will be omitted.

In the third embodiment, it is not necessary to provide the liquid detecting means 69, and the liquid S of the predetermined amount Q ₅ is used.
When supplying the liquid, the liquid detecting means 51 may be used instead of the liquid detecting means 69.

[0120]

According to the present invention having the above-mentioned structure, it is possible to provide a liquid quantitative sampling method and device which can easily change the sampling amount of the liquid and can accurately quantitatively sample the liquid. .

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing a configuration of a liquid quantitative sampling device for carrying out a liquid quantitative sampling method according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram schematically showing a configuration of a main part of the liquid quantitative sampling device in the above-mentioned embodiment.

3A to 3D are explanatory views schematically showing the operation of the liquid quantitative sampling device in the above-described embodiment.

FIG. 4 is an explanatory view schematically showing the configuration of a modified example of the liquid quantitative sampling device.

FIG. 5 is an explanatory view schematically showing the configuration of a liquid quantitative sampling device for carrying out the liquid quantitative sampling method according to the second embodiment of the present invention.

6 (A) to 6 (D) are explanatory views schematically showing the operation of the liquid quantitative sampling device in the second embodiment.

7A to 7D are explanatory views schematically showing another operation of the liquid quantitative sampling device in the second embodiment.

FIG. 8 is an explanatory view schematically showing the configuration of a modified example of the liquid quantitative sampling device in the second embodiment.

FIG. 9 is an explanatory view schematically showing the configuration of a liquid quantitative sampling device for carrying out the liquid quantitative sampling method according to the third embodiment of the present invention.

FIG. 10 is an explanatory diagram schematically showing the configuration of a conventional liquid quantitative sampling device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Discharge port, 2 ... Tube body insertion opening, 3 ... Storage container, 4 ... Tube body, 4a ... Liquid introduction part, 4b ... Liquid supply part, 19 ... Liquid supply object, D ... Liquid quantitative sampling device, S
…liquid.

Continued front page    (72) Inventor Shigeyuki Akiyama             2 Higashimachi, Kichijoin-miya, Minami-ku, Kyoto-shi, Kyoto             HORIBA, Ltd. F term (reference) 2G052 AA00 AC03 AD06 BA14 CA12                       CA36 DA21 HA08 JA04 JA09

Claims (4)

[Claims] 1. A storage container having a discharge port for discharging the stored liquid and a tube body insertion opening, and one end removably inserted into the storage container from the tube body insertion opening and the other end. A liquid quantitative sampling method using a liquid quantitative sampling device comprising a tube body having a liquid supply section and a liquid introducing section for introducing a liquid into the storage container, wherein the liquid introducing section is introduced into the storage container. After introducing the liquid, the liquid level of the liquid is at a position higher than the upper end of the tube body, and then the liquid stored in the tube body is held in the storage container from the discharge port. Is discharged and the liquid contained in the tube body is supplied from the liquid supply unit to the liquid supply target. 2. A storage container having a discharge port for discharging the stored liquid and a tube body insertion opening, and one end removably inserted into the storage container from the tube body insertion opening and the other end. A liquid quantitative sampling device comprising: a tube body having a liquid supply section; and a liquid introduction section for introducing a liquid into the storage container. 3. A storage container having a discharge port for discharging the stored liquid and a tube body insertion opening; one end inserted into the inside of the storage container through the tube body insertion opening, and the other end of the liquid supply unit. A liquid quantitative sampling device, comprising: a tube body having: and a liquid introduction part for introducing a liquid into the storage container, wherein a branch channel is connected to an intermediate part of the tube body. 4. The liquid quantitative sampling device according to claim 2, wherein the volume of the tube body is variable.