JPS643481Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Application of the Technology The present invention relates to a magnetic stirring device suitable for stirring a liquid contained in a thin tube.

B. Prior Art Mixing and stirring of liquid samples and reagents was accomplished by submerging a stirrer called a magnetic styler horizontally in a container, and rotating the stirrer by suctioning it from the bottom with a rotating magnet.

For this reason, the inner diameter of the container must be larger than the length of the styler, making it difficult to apply it to small containers such as measurement tanks.

Further, even if it were possible to rotate the styler in a horizontal plane by shortening the styler, there was a problem in that the stirring efficiency was low and it was not practical.

C. Purpose In view of the above circumstances, an object of the present invention is to provide a magnetic stirring device that can stir a container with a small inner diameter with high efficiency.

D. Structure of the invention In other words, the feature of the invention is that the stirrer is housed in a container in a nearly vertical state, and the stirrer is rotated along the wall of the container by the magnetic force of a rotating magnet from the outside. .

E. Implementation Therefore, the details of the present invention will be explained below based on illustrated embodiments.

FIG. 1 shows an embodiment of the present invention, in which reference numeral 3 denotes a stirrer and a container 1 in which it is housed.
It is made of a permanent magnet that is thinner than the inner diameter of the container 1 and longer than the inner diameter of the container 1, and is configured to be housed in the container 1 in a substantially vertical state. 4 is a rotating magnet arranged on the side of the container 1, and a horseshoe-shaped permanent magnet 5
is connected to the motor 6.

In this embodiment, when the container 1 containing the stirrer 3 is filled with a fluid to be stirred and the rotating magnet 4 is activated, the N pole of the rotating magnet 4 is located on the container 1 side,
The upper part of the stirrer is drawn toward the rotating magnet 4 and leans against the tube wall (Fig. 2). When the rotating magnet 4 rotates 1/4 of a turn, the attractive force of the north pole and the repulsive force of the south pole of the rotating magnet 4 act to tilt it toward the front ( ). When the rotating magnet further turns 1/4, the stirrer 3
The upper part of the rotary magnet 4 receives a repulsive force from the rotary magnet 4 and tilts toward the opposite side from the rotary magnet 4 (). When the rotating magnet rotates another 1/4 rotation, the attractive and repulsive forces from the north and south poles of the rotating magnet act, causing the top of the stirrer to tilt rearward (). This motion is repeated every rotation of the rotating magnet, and the stirrer rotates along the wall of the container in a manner similar to a grinding motion, stirring the liquid in the container using the entire length of the stirrer.

FIG. 3 shows a second embodiment of the present invention, in which a bar magnet 7 is rotated in a vertical plane, and as shown in FIG.
- When the S pole is located in the vertical direction and has a different polarity from the stirrer, the stirrer is drawn toward the rotating magnet and becomes vertical (). When the rotating magnet rotates 1/4 turn,
A horizontal suction force acts on the stirrer, and it tilts back and forth with the top facing you (). When the rotating magnet further rotates by 1/4, the stirrer receives a repulsive force and is pressed perpendicularly to the wall on the opposite side of the rotating magnet ().
When the rotating magnet rotates 1/4 of a turn, it tilts back and forth with the bottom facing you (). This movement is repeated every rotation of the rotating magnet, and the stirrer stirs the liquid in the container while rotating along the wall of the container in a manner similar to a grinding motion.

In this embodiment, the rotating magnet is disposed on the side of the container, but it goes without saying that the stirrer can also be rotated even if it is disposed below.

F. Effect As explained above, in the present invention, there is provided a stirrer made of a rod-shaped permanent magnet that is thinner than the inner diameter of the container containing the liquid to be stirred and longer than the inner diameter of the container, and an outside of the container. Since it is equipped with a rotating magnet placed in the container, one end of the stirrer can be moved along the inner circumferential surface of the container, and the liquid contained in a thin container such as a test tube can be moved from the water surface to the bottom surface. It can be stirred with high efficiency.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an apparatus showing one embodiment of the present invention, Fig. 2 is an explanatory diagram showing the operation of the same device, and Figs. 3 and 4 are block diagrams showing other embodiments of the present invention. ,
and an explanatory diagram of its operation. 1... Tubular container, 3... Stirrer, 4, 7... Rotating magnet.

Claims (1)

[Scope of utility model registration request] A magnetic stirring device comprising a stirring bar made of a rod-shaped permanent magnet that is thinner and longer than the inner diameter of a container in which a liquid or the like to be stirred is stored, and a rotating magnet disposed outside the container.