JPH0530130Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a sampling liquid collection device, which is used, for example, to collect sampling liquid used when collecting radioactive waste liquid etc. generated in the cells of a nuclear facility. Regarding equipment.

[Prior art] Conventionally, when collecting radioactive waste liquid etc. generated in the cells of a nuclear facility, a needle tube is inserted into a storage tank in which the radioactive waste liquid is stored, and the needle tube is inserted into a vacuum container to collect the waste liquid. was aspirated and collected.

[Problems to be solved by the invention] However, when sampling liquid is collected in multiple vacuum containers one by one, it takes time, especially in cells in nuclear facilities.
In special environments where human access is restricted, various operations such as gripping and transporting the vacuum container are performed by operating the manipulator.
The operations tend to become more complex and take more time.

This idea was made in view of the above circumstances, and its purpose is to provide a sampling liquid collection device that can continuously collect sampling liquid into multiple vacuum containers and improve efficiency. .

[Means for solving the problem] This invention is based on a rotary disk placed horizontally above the needle tube, with container holding parts for holding the reduced pressure container being provided at multiple locations at equal pitches in the circumferential direction. A pressing member that presses the vacuum container in one container holding section to allow the needle tube to enter is provided above the disc with a space between the pressure vacuum container and the pressure vacuum container, and a space between the pressure member and the rotary disc is provided. The present invention is characterized in that an intermittent feeding mechanism is provided which converts the linear movement of the pressing member in the interior into rotational movement and rotates the rotary disk by one pitch.

[Operation] According to this invention, when the pressing member is moved linearly downward, the intermittent feed mechanism is driven before the pressing member presses the decompression container, and the rotary disk is rotated by one pitch to depressurize the container. The container is placed downward, and the reduced pressure container is then pressed to allow the needle to enter. Then, by returning the pressing member upward and repeating its linear reciprocating movement, sampling liquid can be sequentially and continuously collected into a plurality of vacuum containers.

[Example] Hereinafter, an example of the sampling device of the present invention will be described with reference to FIGS. 1 and 2.

In FIG. 1, reference numeral 1 indicates a storage tank in which a liquid 2 such as radioactive waste liquid is stored, and a needle tube 3 is placed in the storage tank 1.
is inserted so that the upper part of the needle tube 3 faces the opening of the storage tank 1. A collection device according to the present invention is placed above the needle tube 3. The reduced-pressure container 4 used in the collection device has a structure in which a bottle container 4a made of plastic or the like is covered with a lid 4b made of rubber or the like, and the inside thereof is set to a vacuum atmosphere.

In the above collection device, the code 5 indicates the storage tank 1.
A rotary disk 6 is rotatably supported on the base 5 by a shaft 7. The rotary disk 6 is formed into a disk shape, and a part of its outer periphery is disposed above the center of the base 5, and a through hole having a larger diameter than the decompression container 4 is formed in the outer periphery. Six holding parts 8, 8, .

Further, a support plate 5a is provided at the center of the base 5 to support the reduced pressure container 4 in the container holding section 8 disposed above the center from below. The support plate 5a is separated from the base 5 so as to be movable below the base 5, and a hole 5b through which the needle tube 3 passes is provided in communication with the container holding part 8. A vertical rod 9 is arranged in series upwardly.

Further, a guide member 10 is attached to a side position of the rotary disk 6 on the base 5 with the vertical rod 9 inserted therethrough. The guide member 10
A cylindrical portion 10a extending in the vertical direction is integrally formed on the side portion thereof, and is disposed above the container holding portion 8 in the center portion of the base 5. Inside the cylindrical portion 10a, a pressing member 15, which will be described later, is provided.
A rod-shaped communication member 1 that transmits the pressing force of
1 is housed in a state where it is urged upward by a spring 12, and stoppers 1 are provided at both ends of the communication member 11 to prevent it from being removed from the cylindrical portion 10a.
1a and 11b are provided.

On the other hand, an operating table 13 is fitted onto the upper part of the vertical rod 9 so as to be movable up and down between a step 9a at an intermediate position and a stopper 9b at the upper end.
4 is biased upwardly. The operation console 13
A rod-shaped pressing member 15 is integrally fixed to the lower surface of the pressing member 15, and the lower end of the pressing member 15 faces the upper end of the connecting member 11 at a distance S. Then, the pressing member 15 and the communication member 11
A cylindrical intervening member 16 is provided between the operating table 13 and the bottom wall T of the cylindrical portion 10a so as to be movable up and down.
upper springs 17 respectively interposed between
and a lower spring 18 in a floating state. This upper spring 17 has a larger spring constant than the lower spring 18, and after the lower spring 18 is compressed, the upper spring 17
is becoming compressed.

Further, a downward protruding pin 19 is attached to the side of the intervening member 16, while a cylindrical member 20 is attached to the upper surface of the rotary disk 6 and is disposed below the protruding pin 19. . The cylindrical member 2
0 is provided with sawtooth parts 20a, 20a, . The horizontal force causes the rotary disk 6 to rotate one pitch. When the protruding pin 19 reaches the bottom of the sawtooth section 20a, one of the container holding sections 8 is arranged on the support plate 5a of the base 5, in other words, directly below the communication member 11. It is. That is, the intervening member 16, the protruding pin 19, the cylindrical member 20, etc. constitute an intermittent feeding mechanism 21 that converts the linear movement of the pressing member 15 into rotational movement and rotates the rotary disk 6 by one pitch. There is.

An annular guide member 22 for guiding the manipulator is provided on the upper surface of the operation table 13, and a handle member 23 for conveyance is provided on the base 5.
is rotatably attached so that it can be folded down so as not to interfere with the operation of the manipulator when sampling liquid is being collected.

The collection device configured as described above is placed in the opening of the storage tank 1 with the hole 5b of the support plate 5a of the base 5 arranged above the needle tube 3.

When the operating console 13 is pressed from above by the manipulator, the lower spring 18 is first compressed as the operating console 13 moves, and the distance S between the pressing member 15 and the communication member 11 is reduced. At the same time, the interposed member 16 receives a pressing force from the upper spring 17 and is pushed down, and the protruding pin 19 on the side thereof engages the sawtooth portion 20a of the cylindrical member 20.
Press down on the slope. The horizontal force at this time rotates the rotary disk 6 by one pitch, and the decompression container 4 is placed directly below the communication member 11. When the operating table 13 is further moved downward, the upper spring 17 is compressed because the interposed member 16 is fixed on the cylindrical member 20 via the protruding pin 19. Then, when the pressing member 15 presses the communication member 11, the communication member 11 pushes down the decompression container 4, and the operating table 13 pushes down the vertical rod 10 by contacting the step 10a thereof, and the pressure is reduced together with the support plate 5a. Move the container 4 downward. As a result, the needle tube 3 passing through the hole 5b of the support plate 5a enters the reduced pressure container 4, and the sampling liquid is suctioned. After the sampling liquid is collected, when the pressure on the operating table 13 is released, each member returns to its original position due to the restoring force of each spring 12, 14, 17, and 18. In this way, by repeating the linear reciprocating movement of the operating table 13, a plurality of decompression containers 4, 4 can be sequentially and continuously moved.
Sampling liquid can be collected in...

As mentioned above, by simply pushing the operating table 13 downward, the rotation plate 6 can be rotated by one pitch and the sampling liquid can be sucked into the vacuum container 4. The operation is simple, and the manipulator etc. It is particularly effective when carried out by remote control using
Sampling liquid can be collected in a short time.

In addition, in the above embodiment, the intermittent feed mechanism 2
1, the protruding pin 19 is connected to the sawtooth portion 20 of the cylindrical member 20.
Although the configuration has been described in which linear movement is converted into rotational movement by pressing a, other mechanisms such as a rack and pinion that convert linear movement into rotational movement may be used. Further, although the communication member 11 is arranged between the pressing member 15 and the reduced pressure container 4, the pressing member 15 and the communication member 11 are formed integrally, and a distance S is provided between the member and the reduced pressure container 4. It may be configured as follows.

[Effects of the invention] As explained above, according to the sampling device according to the invention, when the pressing member is moved linearly downward, the intermittent feeding mechanism is driven before the pressing member presses the reduced pressure container. , the rotary disk is rotated one pitch to place the vacuum container below, and then the vacuum container is pressed to allow the needle tube to enter. Then, by returning the pressing member upward and repeating its linear reciprocating movement, sampling liquid can be sequentially and continuously collected into a plurality of vacuum containers. In other words, by pressing the pressing member, one
Rotation for pitches and suction of sampling liquid into each vacuum container can be performed, and sampling liquid can be collected easily and in a short time.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing an embodiment of a sampling liquid collecting device according to the present invention, and FIG. 2 is a plan view thereof. DESCRIPTION OF SYMBOLS 1... Storage tank, 2... Sampling liquid, 3... Needle tube, 4... Decompression container, 5... Base, 5a... Support plate, 5b... Hole, 6... Rotating disk, 7... Shaft, 8...
... Container holding part, 9 ... Vertical rod, 10 ... Guide member, 11 ... Connection member, 12, 14, 17, 18
... Spring, 13 ... Operation table, 15 ... Pressing member, 16 ... Interposition member, 19 ... Projection pin, 2
0... Cylindrical member, 20a... Serrated portion, 21... Intermittent feed mechanism, 22... Handle member.

Claims (1)

[Scope of utility model registration request] In a sampling device that aspirates the sampling liquid by inserting a needle tube inserted into a sampling liquid into a vacuum container, a container holder for holding the vacuum container is placed in a circumferential direction on a rotary disk arranged horizontally above the needle tube. A pressing member is provided at a plurality of locations shifted at equal pitches, and a pressing member is provided above the rotary plate at a distance from the vacuum container to press the vacuum container in one container holding section to allow the needle tube to enter. A sampling liquid sampling device characterized in that an intermittent feeding mechanism is provided between the member and the rotary disk to convert linear movement of the pressing member within the interval into rotational motion and rotate the rotary disk by one pitch. .