JPH0646515Y2 - centrifuge - Google Patents

Description

[Detailed Description of the Invention] [Field of Utilization of the Invention] The present invention relates to a connecting mechanism of a centrifuge used in fields such as medicine, biochemistry, and agricultural chemistry.

[Background of the Invention] FIGS. 2 to 4 show the structure of a centrifugal separator according to the prior art. The rotor 3 is attached to the rotary shaft 1 and is driven to rotate at a high speed by a drive motor 4. Many of the rotors 3 have different shapes, sizes, etc., and the user selects from among these many according to the purpose of separation, the separated sample, the amount of separated sample, and the like. However, among many rotors 3, some of the rotors 3 have different mounting portions 31 from the rotating shaft 1 of the rotor 3, so that the user matches the rotating shaft 1 itself with the mounting portion 31. I had to replace it with something. The rotary shaft 1 corresponding to the shape of the mounting portion 31 has a shape as shown in FIGS. 3 and 4, and for example, the rotary shaft 1 shown in FIG.
When replacing the rotating shaft 1 shown in the figure, the rotating shaft case 13 also had to be replaced, which made the work complicated and increased the price because many replacement parts were required.

[Object of the Invention] An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to easily attach a rotor having a different mounting portion shape to a rotating shaft.

[Outline of device]

The present invention focuses on the fact that a large number of rotors can be used if the shapes of the mounting portions of the rotor and the rotating shaft match, and it is easy to fit an adapter that matches the mounting portion of each rotor onto the rotating shaft. It was devised to match.

[Example of device]

FIG. 1 shows an embodiment of the present invention. A screw hole 11 is arranged in the axial direction of the rotary shaft 1, and a rotation stop pin 12 is provided to prevent a slip phenomenon when the rotor 3 is rotationally driven.
Is provided. The rotary shaft case 13 is fixed to a motor (not shown), and the rotation of the motor (not shown) is transmitted to the rotary shaft 1 by a coupling 14 provided inside the rotary shaft case 13. Normally, the rotor 3 is placed on the rotary shaft 1 and rotated, and the shape of the mounting portion 31 is different.
If you want to rotate the
And the rotor 3 is rotated. The adapter 2 is fixed to the rotary shaft 1 by screw holes 11 provided in the center of the upper surface of the rotary shaft 1.
The adapter 2 is attached with a fixing screw 22, and the rotation stop pin 21 blocks the rotation of the adapter 2 with respect to the rotating shaft.

By changing the shape of this adapter 2, it becomes possible to use all the rotors 3 that can be inserted into the centrifuge.

Further, heat generation of the motor, which has been a particular problem in the cooling centrifuge, is transmitted to the rotor 3 via the rotating shaft 1, so that the adapter 2 is made of a material having a low thermal conductivity, such as titanium, ceramic, stainless steel, or plastic. By forming it, it has the advantage that it can be largely eliminated.

Further, as a modification, in FIG. 1, the shape of the rotary shaft 1 is made to correspond to the mounting portion 31 of the rotor 3, but the adapter 2 can be used in all cases. In this case, since the shape of the rotary shaft 1 is free, it is sufficient to consider only the complete engagement with the adapter 2.

[Effect of device]

According to the present invention, since the rotating shaft is an adapter type, it is possible to use all rotors that can be inserted into the centrifuge.
Further, since the adapter and the rotary shaft are engaged with each other at the shaft center of the rotary shaft, the adapter can be centered reliably without being centered.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a rotary shaft portion of a centrifuge according to the present invention, FIG. 2 is a sectional view of an entire centrifuge according to the prior art, and FIGS. 3 and 4 are according to the prior art. It is a side view of the rotating shaft part of a centrifuge. Reference numeral 1 is a rotary shaft, 2 is an adapter, 11 is a screw hole, and 31 is a mounting portion.

Claims (1)

[Scope of utility model registration request] 1. A centrifuge having a rotor containing the sample for separating the sample and a rotary shaft for transmitting rotation to the rotor, wherein the rotor is detachably arranged in the centrifuge. Provide a screw hole in the axial direction at the center of the upper part of the shaft,
An adapter having an outer diameter shape corresponding to various shapes of the mounting portion is fitted on the upper portion of the rotating shaft, and a fixing screw is screwed into the screw hole to detachably connect the adapter to the rotating shaft. Therefore, the centrifuge is characterized in that it is possible to mount rotors having different mounting portions.