JP2004113856A - Rotary stand - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary stand which can efficiently perform experimental work for liquid separation or filtration in parallel without waiting until liquid separation work or filtration work is completed perfectly and which has good operability. <P>SOLUTION: The rotary stand S is equipped with a pedestal part 2, a stand 1 having the support shaft part 3 which is vertically provided on the pedestal part 2 so as to be turned upwardly from the center thereof, and the holder part 4, which has a plurality of the receiving parts 6a, supported on the support shaft part 3, and the rotary stand 10 fixed to the undersurface of the pedestal part 2. The holder part 4 has a plurality of the receiving parts 6a on its circumference of a circle and the holder plate 6 supported on the support shaft part 3 rotatably. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a stand used for experiments and the like that supports a laboratory instrument such as a funnel in a laboratory or the like, and in particular, a rotary stand that supports a plurality of laboratory instruments and can efficiently perform work such as analysis. About.
[0002]
[Prior art]
Conventionally, in an experimental stand used in a laboratory or the like and supporting a funnel or the like, a holder portion of an experimental stand such as a separating funnel or a filtration funnel rotates, but none of the pedestal portions rotates. For this reason, when performing multi-sample processing, a front sample is first processed, then a collection container such as a beaker is removed, and the next sample is moved to the front to process one sample at a time.
[0003]
[Problems to be solved by the invention]
By the way, when the experimental stand having the above structure separates an oil sample with a separating funnel and collects the oil sample in a beaker, a test tube, or the like, the oil has a high adhesive force to the inner surface of the separating funnel and is almost completely recovered. Takes a long time. In particular, when processing a large number of these samples, there is a problem that it takes too much time since the separated samples are collected one by one. In addition, there is a similar problem that the filtering operation using the filtration funnel is time-consuming and complicated.
[0004]
The present invention has been made in view of such a problem, and an object of the present invention is to support a plurality of separating funnels, filtering funnels, and the like, and completely complete the separating work and the filtering work. It is not necessary to wait until the operation is performed, and it is possible to efficiently perform experiments such as liquid separation and filtration in parallel, and to provide a rotary stand that is excellent in operability and is optimal for experiments and the like.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a rotary stand according to the present invention has a pedestal portion, a support shaft portion vertically suspended from the pedestal portion, and a holder portion having a plurality of receiving portions supported by the support shaft portion. And a turntable fixed to the lower surface of the pedestal portion. The turntable is preferably flat, has a parallel upper surface and lower surface, and has a configuration in which the upper surface can rotate with respect to the lower surface. The holder section and the pedestal section are arranged in parallel at an arbitrary interval, a funnel is supported on the holder section, a beaker or the like is installed on the lower pedestal section, and experiments such as liquid separation and filtration are performed.
[0006]
The rotating stand of the present invention configured as described above, for example, when performing a filtration experiment, supports the funnel on one receiving portion of the holder portion, and places a receiving container such as a beaker on the lower pedestal portion. , A filter paper is set, a sample such as a solution is injected, and the filtered solution is received by a beaker or the like placed on a pedestal portion to perform an experiment. Then, while continuing the filtration work, rotate the pedestal portion on the rotating base on the lower surface to position the other receiving portion in the front, similarly support the funnel in another receiving portion located in the front, and to the lower pedestal portion By placing a beaker, another solution filtration experiment can be performed. In this way, experiments requiring time such as filtration can be performed in parallel, so that the working time can be reduced, filtration of a large number of solutions can be performed efficiently, and the funnel can be supported and the beaker can be placed in front. Therefore, the work becomes easy, and problems such as spilling of the solution can be prevented.
[0007]
As a preferred specific mode of the rotary stand according to the present invention, the holder section has a plurality of receiving sections on a circumference, and has a holder plate rotatably supported by the support shaft section. . The holder part preferably has a circular holder plate, and the plurality of receiving parts are formed along a circular outer periphery. According to this configuration, the support of the funnel or the like to the plurality of receiving portions of the holder portion can be easily performed along the circumference, and the efficiency of an experiment operation or the like can be increased.
[0008]
Further, as another preferable specific embodiment of the rotary stand according to the present invention, the holder portion can adjust the vertical position from the pedestal portion. According to this configuration, a container such as a tall graduated cylinder can be placed on the pedestal in addition to the beaker, and an experimental instrument suitable for an experimental operation can be selected, and the operation efficiency can be improved.
[0009]
Further, as another preferred specific embodiment of the rotary stand according to the present invention, the plurality of receiving portions are opened on the outer periphery of the holder portion and are circular. According to this configuration, when supporting an experimental instrument such as a funnel on the holder, the experimental instrument can be inserted from the side opening, so that it can be easily supported, and the efficiency of the experimental operation can be increased.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a rotating stand according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of the rotary stand according to the present embodiment, FIG. 2 is a perspective view seen from below in FIG. 1, and FIG. 3 is a cross-sectional view of the turntable along line AA in FIG.
[0011]
1 to 3, the rotating stand S includes an upper stand 1 and a lower rotating table 10. The stand 1 has a disk-shaped pedestal portion 2 on which experimental equipment such as a beaker is placed, a support shaft portion 3 vertically suspended from the center of the pedestal portion, and is fixed to an arbitrary position on the support shaft portion. And a holder unit 4. The holder unit 4 includes a fixed shaft unit 5 fixed to the support shaft unit 3 with a set screw 5a, and a disk-shaped holder plate 6 rotatably connected to the fixed shaft unit and supporting a plurality of experimental instruments such as a funnel. Have. The holder plate 6 has six receiving portions 6a formed on the circumference. The receiving portion 6a has a substantially circular shape which is opened on the outer periphery of the holder plate 6, and supports, for example, an inverted conical portion of the funnel around the substantially circular shape.
[0012]
The pedestal portion 2 is formed of, for example, a disk made of plastic or the like, and a plurality of containers containing liquids or the like are placed on the upper surface thereof. Therefore, a disk having a relatively large strength of about 5 to 10 mm is preferable. Further, the diameter of the pedestal 2 is formed to be larger than the diameter of the turntable 10, and the outer periphery of the pedestal 2 protrudes from the turntable 10. The pedestal 2 can be rotated by holding the protrusion by hand. When the pedestal 2 is rotated, the stand 1 can be rotated accordingly. The lower end of the support shaft 3 is screwed to the center of the pedestal 2, and in the present embodiment, the lower end is formed of a plastic round bar having a large outer diameter. The support shaft 3 may be formed from a metal or wooden round bar.
[0013]
The fixed shaft portion 5 of the holder portion 4 is formed in a vertical direction around a hole into which the support shaft portion 3 is inserted, and is set at an arbitrary position in the vertical direction by a set screw 5 a screwed into a screw hole formed in a horizontal direction. And a vertical position from the pedestal portion 2 can be adjusted, and a circumferential groove portion 5b that opens upward is formed concentrically on the upper surface. The holder plate 6 is formed of a relatively strong plastic disc having a thickness of about 5 to 10 mm, and a center hole into which the support shaft 3 can be inserted is formed in the center in the vertical direction. A cylindrical portion 6b rotatably fitted into the circumferential groove portion 5b of the fixed shaft portion 5 is formed to protrude downward.
[0014]
The six receiving portions 6a formed on the circumference of the holder plate 6 are circular openings having a diameter of about 80 to 90 mm and partially open to the outer periphery. It is preferable that the receiving portion 6a has an inclined surface such that the cross section is easy to receive a funnel, for example. As an example, the thickness of the holder plate 6 is 7 to 8 mm, the upper diameter is about 90 mm, and the lower diameter is When formed on an inclined surface of about 85 mm, the inclination angle is preferably about 45 ° that opens upward. The opening width of the opening 6c is smaller than the circular diameter of the receiving portion 6a, and is preferably about 30 to 35 mm. For example, a pipe-shaped dropping portion 20a below the funnel can be passed through the opening 6c. The number of receiving portions 6a is not limited to six, and can be any number.
[0015]
And the rotary stand S of the present invention is characterized in that it has a rotary table 10 fixed to the lower surface of the pedestal portion 2 of the stand 1. The turntable 10 has a lower disk 11 and an upper disk 12 rotatably connected to each other. In this embodiment, a plurality of bearing balls are provided between the lower disk 11 and the upper disk 12 so that the lower disk 11 and the upper disk 12 can rotate smoothly. The upper and lower disks 11 and 12 are rotatably connected to each other by a center snap-fit portion 13, and the lower surface of the lower disk 11 and the upper surface of the upper disk 12 are parallel to the lower surface. The upper surface can be rotated.
[0016]
The lower disk 11 has a rising portion 11a whose outer periphery rises upward, the upper disk 12 has a hanging portion 12a whose outer periphery hangs downward, and the rising portion 11a and the hanging portion 12a are slightly different. They face each other with a gap. Instead of the center snap-fit portion 13, the upper and lower disks may be rotatably connected by a center screw. The center axis is fixed to one disk by press fitting or the like, and the other disk is rotatable about the center axis. It may be configured to be connected.
[0017]
The frame 15 includes a ball receiving portion 15a that supports four bearing balls 16 arranged at equal intervals of 90 degrees on a large circle and four bearing balls 17 arranged at equal intervals on a small circle. The supporting ball receiving portion 15b is formed of a frame concentrically connected. On the upper surface of the lower disk 11 are formed two circumferential rail portions 11b corresponding to the two circumferences on which the bearing balls 16 and 17 of the frame 15 are located. A peripheral rail portion 12b is formed. The radius of curvature of the cross section of the circumferential rail portions 11b and 12b is preferably a radius equal to or slightly larger than the radius of the bearing balls 16 and 17.
[0018]
As described above, the turntable 10 is composed of the upper and lower disks 11, 12 and the frame 15 located therebetween, so that the upper and lower disks 11, 12 can rotate smoothly via eight bearing balls. Are linked. The turntable 10 is not limited to the above-described structure having the frame, and may have a simple structure in which two smooth disks slip around the rotation axis.
[0019]
The turntable 10 and the pedestal 2 of the stand 1 are fixed with a countersunk screw 18 as a plurality of connection screws. That is, a connection hole having an inverted truncated conical cross section is formed in the pedestal portion 2, a screw hole corresponding to the connection hole is formed in the upper disk 12 of the turntable 10, and a countersunk screw 18 is threaded through the connection hole. And both are connected and fixed. The head of the countersunk screw 18 is inserted into the connection hole of the pedestal portion 2 and the upper surface of the pedestal portion 2 is flat, so that laboratory instruments and the like can be stably placed on the upper surface. The connection screw may be a tapping screw having a dish-shaped upper part.
[0020]
Regarding the operation of the rotating stand S of the present embodiment configured as described above, for example, the funnel 20 is mounted on the pedestal part 2 while supporting the funnel 20 on the holder part 4, and the liquid injected into the funnel 20 is filtered. The experiment will be described. First, the position of the fixed shaft portion 5 for receiving the holder portion 4 is adjusted according to the height of the beaker 21 to be placed and the length of the funnel 20 to be used. That is, the set screw 5a is loosened to move the fixed shaft 5 up and down along the support shaft 3, and the set screw 5a is tightened at a desired height and fixed to the support shaft 3, and the holder 4 and the pedestal The distance to the unit 2 is set.
[0021]
The drip portion 20a below the funnel 20 is inserted into the receiving portion 6a of the holder plate 6, and the inverted conical portion of the funnel 20 is brought into contact with the circular receiving portion 6a. Then, the beaker 21 is placed on the pedestal portion 2 below the dropping portion 20a. When a filter paper is laid on the inner surface of the inverted conical portion of the funnel 20 and a solution as a specimen is injected onto the filter paper, the liquid filtered by the filter paper drops from the dropping portion 20 a of the funnel 20. This sample is left until the filtration is completed. The rotating stand S of the present embodiment can be moved from the front without interrupting the first sample filtering operation by rotating the periphery of the pedestal portion 2 by hand, and the second and subsequent sample filtering operations can be performed. Can be performed in parallel.
[0022]
When the pedestal portion 2 protruding sideways from the turntable 10 is rotated by 60 degrees with fingers, the upper disk 12 rotates together with the pedestal portion 2 with respect to the lower disk 11 of the turntable 10, and the first sample is The poured funnel 20 and beaker 21 can be moved from the front while filtering. Since the second receiving portion 6a of the holder portion 4 is located at the front, another funnel 20 is supported by this receiving portion, and another beaker 21 is installed below the funnel 20. Filter paper is spread on the second funnel 20 and the sample is injected to perform the filtering operation of the second sample. In this manner, in the present embodiment, since the filtering operation of six specimens can be performed in parallel, the efficiency of the filtering operation requiring a long time can be improved.
[0023]
If there is a sample whose filtration has been completed earlier during the filtering of six samples, the pedestal 2 is rotated to move the completed sample to the front side and the funnel 20 and the beaker 21 can be removed. Subsequent work can be performed efficiently, and clearing work can be easily performed. Further, since the filtration of the sample during the continuation of the other filtration operation is not interrupted, the operation time can be shortened, and the inconvenience of spilling the sample by falling down another container can be prevented, thereby improving the operation efficiency. It is needless to say that the experimental work can be applied not only to the filtration work but also to the liquid separation work and other works.
[0024]
The rotary stand of the present embodiment can rotate the entire stand 1 by holding the pedestal portion 2, but rotates only the holder plate 6 of the holder portion 4 about the support shaft portion 3. You can also. That is, the cylindrical portion 6b of the holder plate 6 is inserted into the circumferential groove portion 5b of the fixed shaft portion 5 from above and is rotatably fitted thereto. And the holder plate 6 can be easily lifted up and removed. For this reason, for example, the holder plate 6 supporting the six funnels 20 can be lifted and washed as it is, or can be carried as it is. The holder plate and the fixed shaft may be configured to be rotatable and non-detachably coupled.
[0025]
Next, another embodiment of the present invention will be described in detail with reference to FIG. FIG. 4 is a sectional view of another embodiment of the rotary stand according to the present invention. This embodiment is characterized in that the fixed shaft portion of the holder portion and the holder plate are fixed so as not to be rotatable with respect to the above-described embodiment, and the configuration of the turntable is different. The same reference numerals are given to other substantially equivalent components, and detailed description will be omitted.
[0026]
In FIG. 4, a fixed shaft portion 25 and a holder plate 26 are fixed to the holder portion 24 by press fitting, caulking, welding, or the like. Therefore, the holder plate 26 cannot be rotated with respect to the fixed shaft portion 25, and the fixed shaft portion 25 is fixed to an arbitrary position of the support shaft portion 3 by a set screw 25a. The holder plate 26 is formed with a plurality of receiving portions 26a on the circumference along the outer circumference. The receiving portion can support the funnel 20 and the like, and has an opening 26c.
[0027]
The turntable 30 has a lower disk 31 and an upper disk 32 rotatably connected by a center screw 33. At a plurality of locations on the circumference of the lower disk 31, bearing balls 34 are urged upward to be supported, and a rail groove 32 a is formed on the upper disk 32 corresponding to the bearing balls 34. For this reason, the upper disk 32 can rotate smoothly with respect to the lower disk 31. The pedestal 2 is fixed to the upper disk 32 of the turntable 30 with a countersunk screw 35 for connection, and a beaker, a measuring cylinder 23, a test tube or the like is placed on the pedestal 2.
[0028]
Also in this embodiment, when the funnel 20 is supported on the receiving portion 26a of the holder portion 24 of the stand 1 and the measuring cylinder 23 is placed on the lower pedestal portion 2 to perform a filtering operation or a liquid separation operation, the pedestal portion is required. 2 can be moved from the front to the side by filtering the funnel 20 by rotating the outer peripheral part protruding laterally between the fingers, and another funnel can be moved to another receiving part 26a located in the front. , And another graduated cylinder is placed on the pedestal below, so that the filtration operation and the liquid separation operation can be performed in parallel.
[0029]
Therefore, similarly to the above-described embodiment, the filtering operation, the liquid separation operation, and the like can be efficiently performed, and the overall time can be reduced and the efficiency can be increased. In addition, since the operation can be performed from the front, operations such as clearing can be easily performed in addition to the filtration and liquid separation operations, and problems such as spilling the solution by turning over the container can be prevented.
[0030]
As described above, one embodiment of the present invention has been described in detail. However, the present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the spirit of the present invention described in the appended claims. Design changes can be made. For example, the rotating stand of the present invention is not limited to the one used for experiments, and may be used for other uses such as measurement and display.
[0031]
Further, the receiving portion of the holder portion has been described as an example of a circular hole opened on the outer periphery, but the receiving portion of the holder portion may be appropriately set such as a non-opened or non-circular one. Although the holder section has been described as an example including the holder plate and the separate fixed shaft section, the holder section and the fixed shaft section may be integrally formed. Although the pedestal portion, the support shaft portion, and the holder portion constituting the stand have been described as being formed of plastic, they may be formed of metal or wood.
[0032]
【The invention's effect】
As can be understood from the above description, the rotating stand according to the present invention can perform operations such as filtration experiments in parallel, and can reduce the operation time. In addition, by rotating the pedestal part of the stand for experiments etc., the sample located at the rear can be smoothly moved to the front, so that experiments such as filtration and liquid separation can be easily performed, preventing problems associated with experiments. As a result, the efficiency of the experimental work can be improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an embodiment of a rotary stand according to the present invention.
FIG. 2 is a perspective view of the rotary stand of FIG. 1 as viewed from below.
FIG. 3 is a sectional view of the turntable taken along line AA in FIG. 1;
FIG. 4 is a sectional view of another embodiment of the rotary stand according to the present invention.
[Explanation of symbols]
S rotating stand, 1 stand,
2 pedestal, 3 support shaft,
4,24 holder part,
5, 25 fixed shaft part, 5a, 25a set screw,
6,26 holder plate,
6a, 26a receiving part,
6c, 26c opening,
10,30 turntable, 11,31 lower disk,
12, 32 upper disk, 15 frames,
16, 17, 34 bearing balls,
18,35 countersunk screws,
20 funnels, 21 beakers,
23 graduated cylinder, 33 center screw

Claims (4)

A pedestal portion, a support shaft portion vertically suspended from the pedestal portion, a holder portion having a plurality of receiving portions supported by the support shaft portion, and a turntable fixed to a lower surface of the pedestal portion. A rotating stand equipped. 2. The rotary stand according to claim 1, wherein the holder portion has the plurality of receiving portions on a circumference, and has a holder plate rotatably supported by the support shaft portion. 3. The rotary stand according to claim 1, wherein the holder unit is capable of adjusting a vertical position from the pedestal unit. The rotating stand according to any one of claims 1 to 3, wherein the plurality of receiving portions are open at an outer periphery of the holder portion and are circular.

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