JPH07194957A - Magnetic stirrer rotating on its own axis and while making revolution - Google Patents

Abstract

PURPOSE:To provide a magnetic stirrer rotating on its own axis while making revolution having a rapid and strong stirring ability. CONSTITUTION:A mechanism for rotating on its own axis while making revolution having a magnet for stirring motion is constituted by providing a main rotating axis 5 which has a gear 6 on the upper peripheral face and is provided freely rotatably and vertically on a bottom plate 3 in a box-shaped machine housing 2 and by providing freely rotatably and vertically a sub-rotating axis 14 wherein a rotating disc 8 is freely inserted and fitted under freely horizontally rotating condition on the intermediate part of the rotating axis 5 and a gear 12 mating a gear of the main rotating axis and a magnet 13 for stirring motion are fitted respectively on the lower end and the upper end at the excentric position or the rotating disc 8. In addition, the magnet for stirring motion is rotated on its own axis with the sub-rotating axis while making revolution on an excentric radial orbit in such a way that the main rotating axis and the rotating disc are indepnendently rotated by connecting them respectively with each independent transmission means 20 and 21 taken out of one rotating mechanism.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] As a test method for controlling pollution of the soil environment, a method of measuring whether or not the amount of the harmful substance is within a regulation range through a process of eluting the harmful substance from the soil mass is adopted.

Conventionally, heavy metals such as PCB and cadmium have been mainly regulated, but in recent years, volatile harmful substances such as volatile organic chlorine compounds have become a problem, and they are to be added to the target items of environmental standards. Is becoming.

The method for eluting toxic substances from soil of heavy metals has been carried out by a stirring method in which the test soil is placed in a container at the same time as the elution solution and shaken vertically or horizontally, but the volatile hazardous substances are volatile. Therefore, since it is a very small amount, unlike the conventional elution method of heavy metals, a method of eluting harmful substances by a stirring method using a magnetic stirrer stirrer in a container with a specific stopper is used.

The present invention is used for the elution test of volatile toxic substances from contaminated soil. A stirrer rotates in the soil and eluate while revolving and revolving in a wide range to efficiently volatilize the soil finely. The present invention relates to a magnetic stirrer of a revolution type which is optimal for eluting toxic and harmful substances.

[0005]

2. Description of the Related Art As shown in FIG. 4, a conventional magnetic stirrer has an upwardly directed motor e inside a box-shaped machine body d having a mounting plate c for accommodating a container b such as a flask containing a sample a. And a stirring operation magnet f is attached to the upper end of the rotation shaft of the motor e, and a magnet stirrer g is put into the storage container b placed on the above-mentioned mounting plate c to put the magnetic stirring bar g into operation. According to the rotation of the stirring operation magnet f, the magnetic stirrer g in the sample a is magnetically attracted and rotated to stir the sample a.

[0006]

However, in the above magnetic stirrer, the rotation of the magnetic stirrer g is limited to horizontal rotation (rotation) on one axis, so that the stirring force is weak and does not reach the surroundings. When it is necessary to finely pulverize the entire test soil in order to elute volatile harmful substances in the elution test, there is a problem that the ability to do this sufficiently and quickly is lacking. In addition, if the magnetic stirrer hits the solid matter contained in the soil and is thrown out of the magnetic attraction range of the stirring magnet, the stirring operation will stop.

[0007]

According to the present invention, there is provided a stirring operation magnet arranged in a box-shaped body having a mounting plate for a sample storage container on an upper surface thereof with a slight gap between the magnet and the mounting plate. A storage container provided with a drive mechanism for horizontally rotating on one axis, and a magnetic stirrer that is interlocked and rotated by magnetic attraction of the stirring magnet along with horizontal rotation of the stirring magnet is placed on the mounting plate. In a magnetic stirrer that is placed in a container to stir the sample in the container, a rotation-revolution mechanism that horizontally rotates the stirring operation magnet on a single axis while horizontally rotating with a constant radius orbit is provided. It is an attempt to solve a problem.

[0008]

According to the present invention, the stirring operation magnet is horizontally rotated (revolved) on a single axis while being horizontally rotated (revolved) with a constant radius orbit. Therefore, the sample in the container can be rapidly and finely pulverized over a wide range.

Further, since the stirring magnet is rotated (revolved) horizontally with a constant radius orbit, stirring is performed even if the magnet stirrer during stirring is once out of the range of the attraction magnetic force of the operating magnet. At any point during the revolving movement of the actuating magnet, the stirring action is automatically restarted because the magnet stirrer again falls within the range of the attractive magnetic force.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings.

The drawings show one embodiment of the present invention. A bearing 4 is provided on a bottom plate 3 of a box-shaped machine body 2 having a mounting plate 1 for a sample container F on the upper surface thereof, and is supported by the bearing 4. A rotatable main shaft 5 is installed vertically. The main rotating shaft 5 has a helical gear 6 fixedly mounted on the upper peripheral surface thereof, and a bearing 7 provided at the center is fitted to the main rotating shaft 5 in the intermediate portion below the helical gear 6 so as to be horizontally rotatable. The rotating disk 8 is loosely fitted. The rotating disk 8 is provided with two hook grooves 9a and 9b on the outer peripheral surface and has a pulley shape. Further, a pulley 11 having a diameter smaller than that of the rotating disk 8 and having two engaging grooves 10a and 10b on the outer peripheral surface is fixedly attached to a position below the rotating disk 8 of the main rotating shaft 5. At an eccentric position on the rotary disk 8, a helical gear 12 that meshes with the helical gear 6 of the main rotary shaft 5 is fixedly attached to the lower end, and a two-stage laminated actuating magnet 13 is fixedly attached to the upper end. A support frame 15 having a rotary shaft 14 mounted on a rotary disk 8 and a bearing 16 supported by the support frame 15.
Thus, the revolving mechanism 17 of the stirring actuating magnet 13 is constituted by being rotatably installed vertically. In addition,
The stirrer magnets 13 are laminated in two stages for the purpose of strengthening the magnetic force, and the meshing portion between the main rotary shaft 5 and the sub rotary shaft 14 is a helical gear for the purpose of improving quietness. .

The revolving mechanism 17 is provided at five positions in the box-shaped machine body 2 with a proper interval, and one transmission belt 20 taken out from a pulley 19 attached to a rotating shaft of a motor 18 serving as a rotating mechanism is adjacent to the rotating mechanism 17. The upper and lower engaging grooves 9a on the outer peripheral surface of the rotary disk 8 of the auto-revolution mechanism 17 are connected to each other, and the other transmission belt 21 is connected to the upper engaging groove 10a of the pulley 11 of the main rotary shaft 5. Further, the engaging groove 9b of the rotating disk 8 and the engaging groove 9b of the next rotating disk 8 of the revolving mechanism are connected by the transmission belt 20a, and the engaging groove 10b of the pulley 11 and the engaging groove 10b of the next pulley 11 are connected. The rotational force is sequentially relayed and transmitted in the way that the transmission belt 21a is connected. In addition, in the embodiment, four transmission belts are taken out from the pulley 19 of the motor 18 so that the two sets of rotation mechanism and the three sets of rotation mechanism are connected for each row. It can also be linked to a mold.

A sample storage container F containing a test sample in which contaminated soil or the like is immersed in the test solution is placed on the mounting plate 1 at a position above each of the revolving mechanisms 17, and the test sample in each container F is placed inside the test sample. The magnetic stirrer 22 that acts on the magnetic attraction force of the stirring actuating magnet 13 is introduced into the.

The present invention allows the motor 18 to operate when the switch is activated.
Is rotated, and the rotary disk 8 of the auto-revolution mechanism 17 and the main rotary shaft 5 start to rotate separately by the transmission of each transmission belt, and the rotation of the main rotary shaft 5 is sub-rotated by the meshing of the helical gears 6 and 12 as it is. The shaft 14 is rotated to rotate the stirring actuating magnet 13 on the shaft, and the rotating stirring actuating magnet 13 is revolved around the eccentric position on the rotating disc 8 as a radial distance as the rotating disc 8 rotates. . As the stirring operation magnet 13 rotates and revolves, the stirring operation magnet 13
As shown in FIG. 3, the magnetic stirrer 22 attracted by the magnetic force moves within the test sample while performing the same rotation and revolution operation, so that the test sample can be swiftly and strongly stirred.

Even when the magnet stirrer 22 is thrown out of the magnetic attraction range of the stirring magnet 13 due to a collision with a solid substance in the test sample, the revolution trajectory of the stirring magnet 13 is revolved. At any point of the inside, the magnetic attraction range of the stirring operation magnet 13 is again entered, and the stirring operation is automatically restarted.

[0016]

As described above, according to the present invention, since the magnet for stirring operation is revolved around a certain radius orbit while rotating, the test sample in the container can be stirred widely and swiftly and finely. The effect is that it can be crushed into.

Even if the magnetic stirrer hits the solid matter in the sample and is blown out of the attraction magnetic force of the actuating magnet, the actuating magnet revolves in a wide range, so the magnet stirrer is re-exposed. There is an effect that the stirring operation can be automatically restarted by entering the suction magnetic force range.

Further, when the revolving mechanism is provided at a plurality of places in one box-shaped machine body and sequentially connected to each different transmission means taken out from one rotation mechanism, a plurality of tests of the same kind are simultaneously conducted and tested. There is an effect that the accuracy of the contents can be improved, or a plurality of different kinds of tests can be simultaneously performed to shorten the test time.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing one embodiment of a rotation and revolution mechanism of the present invention.

FIG. 2 is a plan view showing an example in which transmission belts are connected to each other.

FIG. 3 is an explanatory diagram showing a rotation and revolution action of a magnet stirrer.

FIG. 4 is a diagram illustrating a conventional example.

FIG. 5 is an explanatory view of the operation of the same magnetic stirrer.

[Explanation of symbols]

 1 is a mounting plate 2 is a box-shaped machine body 3 is a bottom plate 4 is a bearing 5 is a main rotating shaft 6 is a helical gear 7 is a bearing 8 is a rotating disk 9a, 9b is a engaging groove 10a, 10b is an engaging groove 11 is a pulley 12 The helical gear 13 is the stirring magnet 14, the auxiliary rotary shaft 15 is the support frame 16, the bearing 17 is the rotation mechanism of the stirring magnet 18, the motor 19 is the pulley 20, 20a, 21, 21a is the transmission belt 22. Is a magnetic stirrer

Claims (3)

[Claims] 1. A magnet for stirring operation, which is arranged in a box-shaped body having a mounting plate for a sample storage container on its upper surface with a slight gap between the plate and the mounting plate, is horizontally rotated on one axis. A drive mechanism is provided, and a magnetic stirrer that is interlocked with the magnetic force of the operating magnet to rotate in conjunction with the horizontal rotation of the agitating magnet is thrown into the storage container placed on the mounting plate described above, In a magnetic stirrer adapted to stir a sample, the stirrer magnet is provided with a rotation mechanism and a revolving mechanism at the same time so that the stirring actuating magnet is horizontally rotated on a single axis while having a constant radius orbit. A revolving magnetic stirrer. 2. A stirring operation magnet, which is arranged in the box-shaped machine body having a mounting plate for a sample storage container on the upper surface with a slight gap between the mounting plate and the mounting plate, is horizontally rotated on one axis. A drive mechanism is provided, and a magnetic stirrer that is interlocked with the magnetic force of the operating magnet to rotate in conjunction with the horizontal rotation of the agitating magnet is thrown into the storage container placed on the mounting plate described above, A magnetic stirrer adapted to stir a sample, wherein a main rotating shaft vertically rotatably having a gear on the upper peripheral surface on a bottom plate in the box-shaped body, and an intermediate portion of the rotating shaft. A rotating disk is horizontally rotatably mounted by loose fitting, and a sub-rotating shaft having a gear engaged with the gear of the main rotating shaft at the lower end and an agitating magnet at the upper end is eccentrically positioned in the rotatably vertical direction. Work A rotating magnet revolving mechanism is constituted, the main rotating shaft and the rotating disk are connected to respective different transmission means taken out from one rotating mechanism so as to rotate independently, and the stirring operating magnet together with the auxiliary rotating shaft. The magnetic revolving stirrer according to claim 1, wherein the magnetic stirrer revolves around an eccentric radius as the rotating disk rotates while rotating. 3. The rotating mechanism of the stirring actuating magnet is provided at two or a plurality of places spaced apart from each other, and each main rotating shaft and rotating disk of the mechanism are independent from each other transmission means for taking out from one rotating mechanism. The auto-revolution type magnetic stirrer according to claim 2, which is connected or jointly connected.