JPH089644Y2 - Analytical sample feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION {Industrial application field} The present invention relates to an analytical sample supply device for sequentially supplying granular, powdery, linear, or other solid analytical samples.

{Prior Art} As a supply device for supplying a solid analysis sample such as granules or powder to an analyzer, for example, the one shown in FIG. 5 disclosed in Japanese Patent Publication No. 57-943 is known. There is.

In FIG. 5, reference numeral 31 is a rotary disk, around which a plurality of sockets 32 for sample containers (not shown) are provided, and the rotary disks 31 are stopped so that each socket 32 stops at the sample take-out position. Are driven intermittently. Reference numeral 33 is an arm for moving the sample of the socket 32 stopped at the sample take-out position, the base of which is attached to the support shaft 34, and a holder (not shown) adapted to the shape of the sample such as a suction cup at the tip.
Is installed. The arm 33 is configured to move between the sample take-out position and a sample supply section (not shown).

In this supply device, a container containing a sample is attached to a socket 32 of a rotary disc 31, and the sample is sequentially stopped at a sample take-out position by intermittent drive of the rotary disc 31. Then, as shown by the solid line, the tip of the arm 33 is stopped above the rotating disk 31, and the sample is held by the holder. Next, the arm 33 is moved to the sample supply unit as shown by the chain line,
The sample held by the holder is released.

{Problems to be solved by the invention} In the sample supply device, the sample stopped by the drive of the rotary disk 31 to the sample extraction position is held by the holder of the arm 33, and the sample is supplied to the sample supply section by the movement of the arm 33. The movement is repeated, and a part of the held sample may adhere to the holder, and the holding of the next sample with the sample adhered is repeated.

That is, since a sample contaminated with another sample may be analyzed, there is a problem that the analysis accuracy is lowered, and a part of the sample often remains in the container.

Then, prepare a holder adapted to the form of the sample,
And since it is necessary to select and use them,
There is also a drawback that the supply device becomes expensive and its use is complicated.

The present invention solves the above problems, and provides an analytical sample supply device which has almost no risk of sample contamination and can supply the entire amount of the sample contained in the container. It is intended.

{Means for Solving the Problems} In the analytical sample supply device of the present invention, a plurality of sample setting holes are provided along the periphery of the rotating disk, and the sample setting holes are positioned below the respective sample setting holes. The sample container is rotatably mounted on a rotating disk around a fulcrum, and the sample container is formed in a triangular cross section with its bottom wall inclined, and each sample container is granular or powdery. Alternatively, the sample container is biased by a spring in a direction to maintain a state capable of accommodating a linear or other solid analytical sample, and the sample container is pushed to the center side of the rotating disk of one sample container above the support shaft. , The sample container is pivotally tilted with the support shaft as a fulcrum, and a retractable plunger for sliding the received analysis sample to drop the bottom wall is arranged, and the sample setting hole is placed above the plunger. Rotate to stop It is characterized by intermittently driving the disk.

{Action} This sample supply device is configured such that granular, powdery, linear or other solid analysis samples are sequentially put into each sample container arranged below the sample setting hole provided in the rotating disk,
The sample container is stopped in front of the plunger by intermittent drive of the rotating disk. Then, with the forward movement of the plunger, the sample container stopped before that is pushed and rotated, and the sample contained therein is discharged. At this time, the sample container is formed to have a triangular cross section by inclining the bottom wall thereof, and the sample container is pivotally inclined about the supporting shaft as a fulcrum, so that the stored analytical sample is discharged. Can drop the analytical sample by sliding the bottom wall.

When the sample in the sample container is discharged, the plunger is retracted, and the sample container returns to its original state by the elastic force of the biasing spring. Further, the sample container is formed in a triangular shape in vertical section by sloping the bottom wall thereof, so that the inside of the sample container can be easily cleaned by, for example, pressurized air after discharging the analysis sample.

{Example} An example of the analytical sample supply apparatus of the present invention will be described with reference to FIGS.

In FIGS. 1 to 3, reference numeral 1 is a rotating disk, and a plurality of sample setting holes 2 are provided along the edge of the rotating disk. Reference numeral 3 denotes a reverse concave bracket provided for each sample setting hole 2. These brackets are attached to the lower surface of the rotating disk 1 on the center side of the rotating disk 1 with respect to each sample setting hole 2 with machine screws 4. Has been. Reference numeral 5 denotes a sample container arranged below each sample setting hole 2, which is formed by inclining the bottom wall 6 to have a triangular cross section and extends the side wall at the deep end thereof to the bottom side. Mounting portion 8 protruding from the support portion 7 formed by
Is rotatably attached to the bracket 3 by a support shaft 9. Numeral 10 is an urging spring of the sample container 5, and this urging spring 10
By the elasticity of, the sample container 5 is kept in a state in which the sample can be put therein. Reference numeral 11 denotes a plunger arranged so as to reciprocate in the radial direction of the rotary disk 1 on the center side of the rotary disk 1 with respect to the bracket 3 in order to push and tilt one sample container 5, and 12 denotes the plunger 11 A fluid cylinder, such as air, that drives the, which is mounted on a support 13.

Reference numeral 14 denotes a drive device such as a servomotor that intermittently drives the rotary disk 1 to stop the sample setting hole 2 above the plunger 11 in sequence, which is attached to the support base 13. 15 is the shaft of the drive unit 14, on which the rotary disc 1
The mounting member 16 is fixed, and the insertion convex portion 17 is inserted into the mounting hole 18 of the rotating disk 1.

Reference numeral 19 denotes a plurality of locking protrusions provided at the end of the insertion protrusion 17,
Reference numeral 20 denotes a locking tool that is attached to the rotary disk 1 opposite to the locking projection 19, and its ring-shaped hook 21 is locked to the locking projection 19 to attach the rotary disk 1 to the mounting member 16. Has been.

In the sample supply by the analytical sample supply device configured as described above, a sample (not shown) is put into the sample container 5 below the sample setting hole 2 at an appropriate position of the rotating disk 1.

On the other hand, when the drive device 14 is operated, the shaft 15 and the mounting member 16
The rotating disk 1 is intermittently driven via the to stop the sample container 5 containing the sample above the plunger 11. When the rotary disc 1 stops, the fluid cylinder 12 is actuated to move the plunger 11 forward as shown by the chain line in FIG. 2 to push the sample container 5. The sample container 5 pushed by the plunger 11 pivotally tilts about the support shaft 9 as a fulcrum as shown by the solid line to the chain line in FIG. 2, so that a granular, powdery, linear or other solid analysis sample ( Hereinafter, the sample is referred to as a sample that slides on the bottom wall 6 to come out of the sample container 5 and then to enter a funnel (not shown) or the like arranged below it.

The plunger 11 that pushed the sample container 5 is
It retreats after the time required to discharge the sample is passed. When the plunger 11 is retracted, the sample container 5 is biased by a spring.
With the impact resilience of 10, it returns to the position shown by the solid line in FIG. 2 and the rotation of the rotating disk 1 is repeated.

As described above, by tilting the entire sample container 5 by turning,
Since the stored sample is discharged, almost all of the sample stored in the sample container 5 can be discharged, and at the time of removing the sample from the sample container 5, there is no risk of sample contamination that other samples adhere to the sample container 5. It is possible to increase the accuracy.

The bottom wall 6 of the sample container 5 is inclined so that the sample container 5 is formed in a triangular shape in vertical cross section. Therefore, the sample can be discharged more smoothly by the inclination, and after the sample is discharged, for example, It is also easy to clean the inside of the sample container 5 with pressurized air or the like.

Further, since each bracket 3 to which the sample container 5 is attached is attached to the rotary disc 1 with the small screw 4, it is possible to easily attach / detach each sample container 5 together with the bracket 3 to / from the rotary disc 1 by attaching / detaching the small screw 4. Therefore, the sample container 5 which is contaminated with the sample can be easily replaced, and the maintainability is improved.

Moreover, the rotary disk 1 is attached to the mounting member 16 by locking the hooks 21 of the locking tool 20 fixed thereto to the locking projections 19 of the mounting member 16. Therefore, by rotating the locking tool 20 as shown by the chain line in FIG. 1 to separate the hook 21 from the locking projection 19, the rotary disk 1 can be easily separated. Therefore, for example, it is possible to replace the rotary disk 1 according to the type of sample, and the work such as cleaning of the sample container 5 and the like is easy.

However, the rotary disk 1 can also be fixed to the mounting member 16.

In this embodiment, the plunger 11 is driven by the fluid cylinder 12 such as air, but the plunger 11 can be driven by a cam, a crank or any other driving means.

Although illustration is omitted, for example, a vibrator by an electromagnet is arranged at a position where the sample container 5 pushed and rotated by the plunger 11 is in contact with the sample container 5 by vibrating the sample container 5 at the time of discharging the sample. It is also possible to accelerate the discharge of the sample. In addition, the entire supply device is housed in a case having a dustproof structure, and a purge gas such as N ₂ is flown into the case,
It is also possible to prevent contamination of the sample from the environment.

Further, a position number and a sample detection sensor for each sample setting hole 2 are added to supply the sample in the sample container 5 at a specific position or to supply the desired sample contained in the sample container 5. You can also

FIG. 4 shows another embodiment of the mounting means of the rotary disc 1 to the mounting member 16, in which the lock plate 22 superposed on the insertion convex portion 17 of the mounting member 16 is fixed to the insertion convex portion 17 by the mounting screw 24, And, the lock protrusion 25 provided on the lock plate 23,
It is inserted into a lock hole 26 formed in the rotary disc 1.

Also in this embodiment, the rotary disc 1 can be separated from the mounting member 16 by separating the mounting screw 24.

{Effect of the device} As described above, the analytical sample supply device of the present invention is provided with a plurality of sample setting holes along the periphery of the rotating disk, and is positioned below each sample setting hole. , The sample container is rotatably mounted on the rotating disk with the support shaft as a fulcrum, and the granular, powdery or linear solid sample is placed in the sample container below the sample setting hole of the rotating disk. The sample container is pushed by a plunger and tilted with the support shaft as a fulcrum, and the contained analysis sample is discharged.

Therefore, in order to take out the solid analytical sample contained in the sample container, a special holder or the like is not required, and the structure is simplified, so that the manufacturing cost can be reduced.

Further, the sample container is formed in a triangular shape in a vertical cross section by inclining the bottom wall thereof, and since the sample container is pivotally inclined about the supporting shaft as a fulcrum, when the contained analytical sample is discharged. The analysis sample can be dropped by sliding the bottom wall. Therefore, almost all of the solid analytical sample can be discharged regardless of the form of the solid analytical sample contained in the sample container, so that each analytical sample can be efficiently used for analysis. That is, since the sample container is inclined in its bottom wall and is formed in a triangular cross section, the solid analytical sample can be discharged more smoothly due to the inclination, and after the analysis sample is discharged, For example, the inside of the sample container can be easily cleaned with pressurized air or the like.

Furthermore, since the analytical sample is directly discharged from the sample container and then supplied, there is no risk that the analytical sample contained in the sample container will be contaminated with other analytical samples, and the analytical accuracy Can be higher.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is an exploded perspective view of a main part, FIG. 2 is a sectional view, FIG. 3 is an exploded perspective view of a sample container part, and FIG. FIG. 5 is a sectional view of the main part of the example, and FIG. 5 is a plan view of the main part of the conventional example. 1: rotating disk, 2: sample setting hole, 3: bracket, 5: sample container, 6: bottom wall, 9: spindle, 10: biasing spring, 11: plunger, 1
4: Drive unit.

Claims (1)

[Scope of utility model registration request] 1. A plurality of sample setting holes are provided along the circumference of a rotating disk, and the sample containers are positioned below the respective sample setting holes so that the sample container can rotate about a spindle as a fulcrum. In addition to being mounted on a disk, the sample container is formed with a slanting bottom wall to form a triangular cross section, and each sample container is capable of accommodating a granular, powdery, linear, or other solid analytical sample. Is biased by a spring in the direction to maintain
Further, the sample container is pushed to the center side of the rotating disk of one sample container above the support shaft, and the sample container is pivotally tilted with the support shaft as a fulcrum, and the stored analysis sample is placed on the bottom wall. A device for supplying an analytical sample, in which a plunger capable of advancing and retracting for sliding and dropping the sample is arranged, and the rotating disk is intermittently driven so as to stop the sample setting hole above the plunger.