JPH076745U - Liquid sample collection container - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a safe and accurate liquid sample collection container that is easy to use. [Structure] The liquid sample collection container 10 is mainly composed of a hollow cylindrical tube 1, a valve 2 fixed to the tip of the tube 1, and an air bleeding member 3 fixed to the other end of the tube 1. There is. The valve 2 is composed of a hollow cylindrical valve member 4 which is open at both ends, and a valve body 5 which fits into the hollow portion of the valve member 4. A plurality of radial holes are provided on the outer circumference of the valve member 4 for communicating the hollow portion of the valve member with the outside. On the other hand, the valve body 5 has a hollow cylindrical shape with a closed end, and has a fitting portion that is fitted in the hollow portion of the valve member 4 so as to be slidable in the axial direction in a liquid-tight state. The valve body 5 also has a plurality of radial holes. The valve member 4 is slidable in the axial direction manually or by a suitable tool, and the sliding operation opens and closes the valve 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a container for collecting a liquid sample, and more particularly to a liquid sample collecting container having a valve.

[0002]

[Prior art]

 Conventionally, glass tubes and ladles have been used to draw liquid samples from tanks, tanks, drums, and the like. However, the ladle is inconvenient for pumping from a tank with a narrow inlet, and is not suitable for transferring the pumped sample as it is. In addition, the glass tube was difficult to use because the tip had to be sealed with a cap after taking a sample. In particular, it is extremely difficult to use when drawing a high-viscosity liquid sample or when the shape of the tank containing the sample requires drawing from a higher place. Furthermore, it was structurally impossible to selectively pump out only the samples at a specific depth. As described above, none of the conventional liquid sampling containers are satisfactory because they are difficult to use.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to provide an easy-to-use liquid sample collection container that solves the above problems of conventional sample collection containers. A further object of the present invention is to provide a liquid sample collection container that can be used as a transfer container as it is after sample collection. Another object of the present invention is to provide a liquid sample collection container capable of efficiently collecting a high-viscosity liquid sample. A further object of the present invention is to provide a liquid sample collection container capable of selectively collecting only a sample having a specific depth.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the present invention, the end of a hollow cylindrical elongated cylinder whose both ends are opened is moved in the axial direction in order to allow or block the inflow of liquid into the cylinder. A liquid sample collection container is configured by providing a valve that can be opened and closed and an air bleeding member that can be opened and closed at the other end of the cylinder.

The valve has a hollow tubular shape with both ends open, and a valve member having at least one radial through hole in the outer wall, and a hollow tubular shape with a closed distal end and an open proximal end. And a fitting portion that is slidably fitted in the hollow portion of the valve member in the axial direction in a liquid-tight manner and has at least one radial through hole that matches the radial hole of the valve member. And a valve body including a proximal end portion adapted to be coupled to the distal end of the elongated cylinder.

In the present invention, there is also provided a piston assembly slidably provided in the cylinder in a liquid-tight state so as to suck the liquid into the cylinder.

Further, in the present invention, a hollow cylindrical elongated cylinder having both ends opened and a hollow cylindrical shape having both ends opened, one end of which is fixed to the tip of the cylinder and a sealing surface is provided on the inner surface thereof. Bottom valve body, which is attached to the other end of the cylinder, is fixed to the rod penetrating the inside of the cylinder and the tip of the rod, and cooperates with the sealing surface of the bottom valve body to operate the bottom valve body. A valve seal member for closing the hollow portion and a means provided on the mounting portion at the other end of the cylinder for opening and closing the hollow portion of the bottom valve body by moving the rod and the valve seal member in the axial direction. And a valve assembly including a liquid sample collection container.

[0008]

【Example】

 Hereinafter, the present invention will be described in detail with reference to embodiments.

FIG. 1 shows a first embodiment of the present invention. The liquid sample collection container 10 is mainly composed of an elongated cylinder 1 having a hollow cylindrical shape, a valve 2 provided at the tip of the cylinder 1, and an air bleeding member 3 provided at the other end of the cylinder 1. ing. The valve 2 and the air bleeding member 3 are screwed to the tip of the cylinder 1 in a liquid-tight state.

2 and 3 are cross-sectional views showing an open state and a closed state of the valve 2, respectively. As is apparent from FIG. 2, the valve 2 is composed of a hollow cylindrical valve member 4 having open both ends, and a valve body 5 fitted in the hollow portion of the valve member 4. A plurality of radial holes are provided on the outer periphery of the valve member 4 for communicating the hollow portion of the valve member with the outside. On the other hand, the valve body 5 has a hollow cylindrical shape with a closed end, and has a fitting portion that is slidably fitted in the hollow portion of the valve member 4 in the liquid-tight state in the axial direction. 1 and a proximal end portion adapted to be attached to the distal end. The outer wall near the front end of the fitting portion is provided with a plurality of radial holes for communicating the hollow portion of the valve body 5 with the outside. The radial hole of the valve member 4 and the radial hole of the valve main body 5 are brought into contact with each other when the valve member 4 is slid to the open position with respect to the valve main body 5 (the state shown in FIG. 2), so that the liquid can be mixed. It is adapted to flow into the inside of the cylinder 1 through the radial hole of the valve member 4 and the radial hole of the valve body 5. Further, when the valve member 4 is slid to the closed position with respect to the valve body 5 (the state shown in FIG. 3), the radial hole of the valve body 5 is provided with the radial hole of the valve member 4. It is blocked by the unopened portion, and the liquid is blocked from flowing into the inside of the cylinder 1. The axial sliding of the valve member 4 between the open and closed positions can be done manually or by means of a suitable device. Further, as shown in FIGS. 2 and 3, a recess is provided in a part of the outer periphery of the fitting portion of the valve body 5, and the end of the recess is in contact with the stopper 6 provided in the corresponding portion of the valve member 4. The valve member 4 does not come off from the valve body 5 by the contact, and the valve is in the open position when the valve member 4 is pulled out until it abuts the stopper. A thread is cut on the inner circumference of the base end of the valve body 5, and the valve 2 is firmly attached to the tip of the cylinder 1 by being screwed into the screw cut on the outer circumference of the tip of the cylinder 1. You can

On the other hand, in FIG. 1, the air bleeding member 3 is composed of an air bleeding body 7 and a cap 8 and has a function of escaping the air pushed out by the liquid flowing into the cylinder 1. The inside of the air bleeding body 7 is threaded, and is screwed to the end of the tube 1. The cap 8 can be detachably attached to the air bleed body 7.

The sample collection container 10 further comprises an indicator ring 9. The indicator ring 9 is slidably mounted on the outer circumference of the cylinder 1 so as to reduce the amount of sample collected and the insertion depth of the container, and also to prevent the dripping that travels along the outer circumference of the cylinder. Fulfill

Next, a sample collection operation by the sample collection container 10 will be described. When collecting the liquid sample, the valve 2 and the air bleeding member 3 are pre-opened (the state shown in FIG. 1). In such a state, when the collection container 10 is inserted into the tank in which the liquid in which the sample is to be collected is stored, the liquid is introduced into the cylinder 1 through the plurality of radial holes. When a predetermined amount of liquid is introduced into the cylinder 1 up to the position of the indicator ring 9, the cap 8 of the air bleeding member 3 is sealed in the air bleeding body 7. At the same time, the tip of the valve 2 is pressed against the bottom surface or side wall of the tank to close the valve 2. After that, the container can be pulled out of the tank and directly transferred for analysis or the like. As described above, according to the sample collection container of the present invention, the valve can be closed as it is after collecting a predetermined amount of sample, and the liquid sample can be collected easily, safely and accurately.

FIG. 4 shows a liquid sample collection container 20 according to a second embodiment of the present invention. This example was designed specifically for the collection of highly viscous liquid samples. The cylinder 21, the valve 22 and the indicator ring 28 have the same structure as in the first embodiment. The difference from the first embodiment is that a piston assembly 23 is provided instead of the air bleeding member 3 of the first embodiment. As shown in FIG. 5, the piston assembly 23 includes a rod 24 made of aluminum coated with Teflon, a piston 25 fixed to the tip of the rod 24 and slidable in a liquid-tight state in the cylinder 21, and a rod assembly of the rod 24. The handle 26 is fixed to the other end. The piston assembly 23 is screwed to the end of the cylinder 21 by a mounting member 27 mounted on the outer circumference of the rod 24 between the piston 25 and the handle 26. The rod 24 is slidable inside the member 27 in a liquid-tight state. In the container of this embodiment, as shown in FIG. 4, the valve 22 is opened in advance and the piston assembly 23 is pushed into the cylinder 21 and then inserted into the tank, and then the piston assembly 23 is pulled out. As a result, the liquid sample is sucked and introduced into the cylinder 21. Then, as in the first embodiment, the tip of the valve 22 is pressed against the bottom surface or side wall of the tank to close the manual valve 22 and pull up the container. When the sample is taken out from the container, the reverse operation to the above may be performed. That is, by opening the valve 22 at the tip and pushing in the piston assembly 23, the liquid sample in the cylinder 21 is pushed out from the tip. According to this embodiment, since the liquid is sucked by the action of the piston, it is possible to efficiently and promptly sample the sample even in the case of a highly viscous liquid. In the illustrated second embodiment, a valve is provided at the tip of the cylinder 21, but for a liquid having a viscosity that cannot be sufficiently sucked only by using the piston assembly, the valve 21 is simply used instead. A tip having a relatively large axial through hole may be attached to the tip of the cylinder 21. Further, after the sample is taken, the piston rod 24 is fixed to the mounting member 27 by screwing it into the mounting member 27 so that the piston is not accidentally pushed and the sample does not spill out from the tip. Screws can also be provided.

FIG. 6 shows a liquid sample collection container 30 according to a third embodiment of the present invention. The present embodiment is specifically designed to selectively sample only a liquid having a predetermined depth. The cylinder 31 and the indicator ring 34 have the same structure as in the first and second embodiments. The difference from the first embodiment is that, instead of the valve 2 of the first embodiment, a bottom valve body 32 is screwed to the tip of a cylinder 31, and further, instead of the piston assembly 23 in the second embodiment. The point is that the valve assembly 33 is mounted inside the cylinder 31. As shown in FIG. 7, the valve assembly 33 is a valve seal that forms a valve between the rod 35 and the bottom valve body 32 by being fixed to the tip of the rod 35 and fitted into the bottom valve body 32. It comprises a member 36, a valve knob 37 fixed to the other end of the rod 35, and a member 38 for mounting the valve assembly provided on the outer periphery of the rod 35 in the vicinity of the valve knob 37. The outer diameter of the valve seal member 36 is smaller than the inner diameter of the cylinder 31, and a gap is formed between the outer diameter of the valve seal member 36 and the inner diameter of the cylinder 31 so that liquid can pass therethrough. One end of the member 38 is internally threaded so as to be screwed to the cylinder 31, and the other end is internally threaded so as to be screwed with a threaded portion provided at one end of the valve knob 37. There is. Accordingly, after the member 38 is screwed to the cylinder 31, the valve knob 37 is rotated so that the entire valve assembly 33 can move up and down in the cylinder 31.

8 and 9 are cross-sectional views showing an open state and a closed state of the valve formed by the bottom valve body 32 and the valve seal member 36, respectively. As is apparent from the figure, the bottom valve body 32 is a substantially hollow cylindrical member whose both ends are open. One end is screwed to the cylinder 31, and the other end cooperates with the valve seal member 36 to operate the valve. It is designed to form. By rotating the valve knob 37, the valve assembly 33 is moved downward, the valve seal member 36 is moved from the position shown in FIG. 9 to the position shown in FIG. 8, and the valve is closed. Turning the valve knob 37 in the opposite direction returns the valve from the closed position to the open position.

When collecting a sample according to this embodiment, for example, the valve knob 37 is rotated clockwise and is pushed out to the full, that is, the valve at the tip is closed. In this state, it is immersed in the tank containing the liquid. When the liquid introducing portion at the tip reaches a predetermined depth (this depth can be determined, for example, by using the indicator seal 34 as a guide), the valve knob 37 is rotated counterclockwise. As a result, the valve seal member 36 is retracted, the valve at the tip is opened, and the liquid at this depth is introduced into the cylinder 31. After the predetermined amount of liquid has been introduced, the valve knob 37 is rotated to the right again to close the valve. As a result, no further liquid is introduced into the cylinder 31. After this, the container can be pulled up and transferred as is for analysis and the like. According to this example, since the valve at the tip is opened after reaching the predetermined depth, it is possible to selectively collect the liquid sample at the predetermined depth, and the analysis for each depth is required. It is extremely advantageous in some cases.

In the present invention, it is preferably made of Teflon, which is resistant to any liquid, but depending on the liquid of interest, it may be made of other materials such as less expensive polypropylene. When Teflon is used, it can be sterilized by steam autoclave, dry heat and appropriate gas, and also polypropylene can be sterilized by steam autoclave and appropriate gas. As the rod, a Teflon-coated metal rod or a stainless rod having excellent corrosion resistance can be used.

FIG. 10 and FIG. 11 show a sample take-out member that can be appropriately used when taking out the sample taken according to the first embodiment from the container. These members are used by collecting the sample in the container shown in FIG. 1 and then removing the air vent member in FIG. 1 and attaching it to the cylinder 1. FIG. 10 shows a take-out member equipped with a flow control valve. As shown in FIG. 10, the sample take-out member 40 is composed of a mounting portion 41, a hose portion 42, and a valve portion 43. The mounting portion 41 is adapted to be fitted in the cylinder 1 in a liquid-tight state. The valve portion 43 is constituted by a general flow control valve whose flow rate can be controlled by twisting the cock 44. The liquid sample is taken from the hose portion 42. On the other hand, FIG. 11 shows an apparatus for distributing collected samples into relatively small glass bottles. The sample take-out member 50 is mainly composed of a mounting portion 51, a valve portion 52, and a sample outflow portion 53. The mounting portion 51 is adapted to be fitted in the cylinder 1 in a liquid-tight state. The valve portion 52 is constituted by a general flow control valve whose flow rate can be controlled by rotating the cock 54. The sample outflow portion 53 is provided with two needles 55 and 56, one for outflow of the liquid sample and the other for air flow. The sample is taken out by attaching a glass bottle having a rubber partition wall to the open end of the glass tube so as to pierce the two needles, and then twisting the cock 54. When the cock 54 is twisted, the liquid flows into the glass bottle through the one needle 55, and the air in the glass bottle is discharged to the outside through the other needle 56. When the glass bottle is filled with the liquid sample, the cock 54 is closed. The sample that has accidentally overflowed flows out through the hose 57. Further, a stand 58 having four legs is provided for protecting the needle and supporting the take-out member. By using the members shown in FIGS. 10 and 11, it is possible to take out the collected sample more safely and appropriately in an amount suitable for the application.

Although the present invention has been described above with reference to the typical embodiments, various modifications can be made based on the present invention, such as appropriately combining these parts, lengthening the cylinder with an appropriate joint, and the like. It will be apparent to those skilled in the art.

[0021]

[Effect of device]

 In the present invention, since a valve that can be opened and closed is provided at the tip of the cylinder for introducing the liquid, it is possible to take a liquid sample extremely safely, reliably and easily. In addition, by incorporating the piston assembly, a highly viscous liquid sample can be collected quickly and efficiently. Furthermore, by allowing the valve provided at the tip to be opened and closed manually from the other end, it becomes possible to selectively collect a liquid sample from a specific depth. Also, the sample collection container of the present invention can be disassembled into individual components, which makes cleaning easier.

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire first embodiment of a liquid sample collection container of the present invention.

FIG. 2 is a cross-sectional view showing an open state of a valve in the first embodiment.

FIG. 3 is a cross-sectional view showing a closed state of the valve in the first embodiment.

FIG. 4 is a perspective view showing the entire second embodiment of the liquid sample collection container of the present invention.

FIG. 5 is a perspective view showing a piston assembly according to a second embodiment.

FIG. 6 is a perspective view showing the entire third embodiment of the liquid sample collecting container of the present invention.

FIG. 7 is a perspective view of a valve assembly according to a third embodiment.

FIG. 8 is a sectional view showing a closed state of a valve in the third embodiment.

FIG. 9 is a cross-sectional view showing a closed state of a valve in the third embodiment.

FIG. 10 is a front view showing a member for taking out a sample from the sample collecting container according to the first embodiment.

FIG. 11 is a front view showing a member for taking out a sample from the sample collecting container of the first embodiment.

[Explanation of symbols]

10, 20, 30 Liquid sampling containers, 1, 21,
31 cylinder, 2,22, valve, 3 air bleeding member, 4 valve member, 5 valve body, 6 stopper,
7 Air bleeding body, 8 Cap, 9, 2
8,34 indicator ring, 23 piston assembly,
24 rod, 25 piston, 26 handle, 27 mounting member, 32 bottom valve body, 33 valve assembly, 35 rod,
36 valve seal member, 37 valve knob, 3
8 mounting member, 40, 50 sample extracting member, 41, 51 mounting portion, 42 hose portion, 43, 52 valve portion, 53 sample outflow portion

Claims (5)

[Scope of utility model registration request] 1. An elongated cylinder having a hollow cylindrical shape with both ends opened, and a valve fixed to the tip of the cylinder and openable and closable for allowing or blocking the inflow of liquid into the cylinder.
And a valve member having an openable and closable air bleeding member fixed to the other end of the cylinder, wherein the valve has a hollow cylindrical shape with both ends open, and an outer wall having at least one radial through hole. Has a hollow cylindrical shape with a closed distal end and an open proximal end, and is slidably fitted in the hollow portion of the valve member in a liquid-tight state in the axial direction and has a diameter of the valve member. A liquid sample collection container comprising a valve body including a mating portion having at least one radial through hole that matches a direction hole, and a proximal portion adapted to be coupled to a distal end of the elongated tube. 2. An elongated cylinder having a hollow cylindrical shape whose both ends are open, and a valve which is fixed to the tip of the cylinder and is openable and closable for allowing or blocking the inflow of liquid into the cylinder.
The valve comprises a sample removal member attached to the other end of the cylinder, and the valve has a hollow cylindrical shape with both ends open and an outer wall having at least one radial through hole, and a tip end It has a hollow cylindrical shape that is closed and has a proximal end opened, and is slidably fitted in the hollow portion of the valve member in a liquid-tight state in the axial direction and with a radial hole of the valve member. The valve body includes a fitting portion having at least one radial through hole that matches with the valve body, and a valve body including a proximal end portion adapted to be coupled to the distal end of the elongated cylinder. A mounting portion for mounting to the other end, a valve portion for controlling the outflow amount of the sample from the cylinder, and an outflow portion through which the sample flows out, the outflow portion, a needle for circulating air, Sample leaked Needle and is provided that,
Liquid sampling container. 3. An elongated cylinder having a hollow cylindrical shape with both ends opened, and a valve fixed to the tip of the cylinder and opened and closed to allow or block the inflow of liquid into the cylinder.
A piston assembly slidably provided in the cylinder in a liquid-tight state for sucking the liquid into the cylinder, wherein the valve has a hollow cylinder shape with both ends open and has at least one outer wall. It has a valve member with two radial through holes and a hollow cylindrical shape with its tip closed and its base open, and it slides axially in a liquid-tight manner inside the hollow part of the valve member. A valve that includes a fitting portion that is freely fitted and that has at least one radial through hole that matches the radial hole of the valve member, and a proximal end portion that is adapted to be coupled to the distal end of the elongated cylinder. A liquid sample collection container consisting of a main body. 4. A bottom cylinder body having a hollow cylindrical elongated cylinder whose both ends are open, and a hollow cylinder whose both ends are open, one end of which is fixed to the tip of the cylinder and whose inner surface has a sealing surface. A rod that is attached to the other end of the cylinder and penetrates the inside of the cylinder, and a valve seal member that is fixed to the tip of the rod and that cooperates with the sealing surface of the bottom valve body to close the hollow portion of the bottom valve body. And a means provided on a mounting portion at the other end of the cylinder and adapted to axially move the rod and the valve sealing member to open and close the hollow portion of the bottom valve body. A liquid sampling container. 5. The means for opening and closing the hollow portion is a valve knob fixed to the other end of the rod, the valve knob including a threaded portion on the outer periphery and a knob portion for rotating the valve knob. The liquid sample collection container according to claim 3, comprising the valve knob and a member that is attached to the other end of the cylinder and has a threaded portion through which the rod penetrates and that is screwed into a threaded portion of the valve knob.