JPH0616865B2 - Centrifuge rotor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor for a centrifuge, which is generally called an "eltorator rotor" and which continuously separates a sample by centrifugal force.

[0002]

2. Description of the Related Art Conventionally, a centrifuge using a rotor for a centrifuge of this type has a strobe light source disposed below the rotor as described in, for example, US Pat. No. 4,350,028. The light beam is emitted toward the head in a cycle synchronized with the rotation speed of the rotor. Further, this type of centrifuge rotor is provided with a hole (separation chamber receiving portion referred to in the present invention) in a direction parallel to the rotor axis so that the light beam emitted from the strobe light source can pass therethrough. A transparent separation chamber for centrifuging is provided in the hole. Since the rotor and the strobe light source are provided in this way, the user can see the separation state by looking at the rotor from above the rotor. It becomes possible.

[0003]

In the conventional rotor for a centrifuge in which the user can visually check the separated state, as shown in the above-mentioned US Pat. No. 4,350,028, a rotor on a cylinder is conventionally used. The separation chamber was inserted radially from the rotor. Therefore, when the light beam of the stroboscopic light source is emitted from below the rotor, the light beam hits the surface of the cylindrical separation chamber and is refracted, so that the user cannot accurately see the separated state. Was.

The object of the present invention is to overcome the drawbacks of the prior art,
It is an object of the present invention to provide a rotor for a centrifuge that allows a user to accurately visually check the separated state.

[0005]

The above object can be achieved by providing the separation chamber as a separation chamber in which a light beam from a strobe light source is not refracted.

[0006]

In the past, the reason why the light beam from the strobe light source was refracted was that the separation chamber was cylindrical, that is, the light beam and the surface of the separation chamber were not at right angles. With this in mind, the present invention makes the upper and lower surfaces of the separation chamber perpendicular to the rays emitted from the strobe light source so that the rays will not be refracted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention is shown in FIGS.

FIG. 1 is a vertical sectional view showing a state in which a rotor 6 according to the present invention is used by being attached to a coupling 7 which is rotated by a motor (not shown) of a centrifugal separator. FIG. 2 is a partially omitted top view showing a state in which the assembly 25 of the separation chamber 8 and the shaft 11 integrated with the rotor 6 according to the present invention and the counter chamber 9 are attached. FIG. 3 is a perspective view showing the relationship between the separation chamber 8 integrated with the rotor 6 according to the present invention and the assembly 25 of the shaft 11.

The rotor 6 is placed on the coupling 7 of the centrifuge while holding the transparent separation chamber 8, the counter chamber 9 and the pipe 10, and in this state the motor of the centrifuge (not shown). Rotates at high speed by receiving the rotational force from.

A separation chamber receiving portion 22 penetrating through the rotor 6 in a direction parallel to the rotor axis center, and a rotor chamber axially symmetrical position of the separation chamber receiving portion 22 also penetrates in the parallel direction with the rotor axis center. Counter chamber receiving portion 23
The separation chamber 8 is provided in the separation chamber receiving portion 22, and the counter chamber 9 is stored in the counter chamber receiving portion 23.
Further, a pipe receiving portion 2 that receives the pipes 10 and 13 is provided between the separation chamber receiving portion 22 and the counter chamber receiving portion 23.

An assembly that can be inserted into the separation chamber receiving portion 22, the counter chamber receiving portion 23, and the pipe receiving portion 26, and that integrally configures the separation chamber 8, the counter chamber 9, the pipes 10, 13, and the shaft 11. Two
5, the separation chamber 8 and the pipes 10, 1
The integral construction of 3 and shaft 11 is achieved by connecting separation chamber 8 and shaft 11. In the present invention, the pipes 10 and 13 are used for this connecting means. However, when the strength of the pipes 10 and 13 is not sufficient to support the separation chamber receiving portion 22 and the counter chamber receiving portion 23, other general techniques are used. It is possible to easily solve the problem by using, and auxiliary connection by means other than the pipes 10 and 13.

The counter chamber 9 is a balancer which is provided at a position symmetrical to the separation chamber 8 with respect to the rotor axis, and is provided such that the center of gravity of the rotor 6 including the separation chamber 8 is at the center of the rotor. Also, for the same reason,
The pipe 10 also extends to the counter chamber 9 side. By extending the pipe 10 toward the counter chamber 9 side in this way, the counter chamber 9 can be hooked on the pipe 10 as shown in FIG. 3, so that the counter chamber 9 can be easily inserted into the rotor 6. You can

In this way, the connecting means, that is, the pipe 1
The assembly 25 integrated by 0 and 13 is inserted into the separation chamber receiving portion 22, the counter chamber receiving portion 23, and the pipe receiving portion 26 provided in the rotor 6 from above the rotor 6, and then the assembly 30 is inserted. In order to fix the rotor 6 to the rotor 6, a clamper 12 is attached to the rotor 6 at a rotor shaft center position so as to sandwich the shaft 11. After that, the screw 19 is screwed from the outside into the screw hole 31 extending in the radial direction from the separation chamber receiving portion 22 and the counter chamber receiving portion 23 to fix the separation chamber 8 and the counter chamber 9.

As described above, since the assembly 25 is attached to the rotor 6 in a very simple and reliable manner, the separation chamber 8 and the counter chamber 9 are attached to and removed from the rotor 6 as compared with the conventional case. And the rotor 6 is not assembled incompletely.

A strobe light source is arranged below the rotor 6, and a light beam emitted from a strobe light source (not shown) in the direction of arrow 24 passes through the separation chamber receiving portion 22 of the rotor 6 on the strobe light source. It is controlled to be emitted at the moment and not at other moments. Therefore, the user observing the rotor 6 from above the rotor 6 looks as if the separation chamber 8 is stopped.

The shape of the separation chamber 8 is such that the lower surface 21 on the side of the strobe light source and the upper surface 20 on the side of the user are formed almost entirely flat, and moreover, with respect to the direction 24 of the light beam emitted from the strobe light source. Is almost right angle.

Since the assembly 25 is composed of a plurality of parts, O-rings 15, 16 and 17 are provided at the parts where the parts come into contact with each other and where the sample passes.

[0018]

According to the present invention, the lower surface of the separation chamber on the side of the strobe light source and the upper surface on the side of the user are formed substantially flat, and both surfaces thereof are almost flat with respect to the light rays emitted from the strobe light source. Since the light beam from the strobe light source is not refracted because it is right-angled, it is possible to provide a rotor for a centrifuge that allows a user to accurately visually check the separated state.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a rotor according to the present invention.

FIG. 2 is a partially omitted sectional view showing an embodiment of a rotor according to the present invention.

FIG. 3 is a perspective view showing an embodiment of a rotor according to the present invention.

[Explanation of symbols]

6 is a rotor, 8 is a separation chamber, 9 is a counter chamber, 20 is a separation chamber upper surface, 21 is a separation chamber lower surface, 22 is a separation chamber receiving portion, and 24 is an arrow indicating the direction of a light beam emitted from a strobe light source.

Claims (1)

[Claims] 1. A rotor that rotates at a high speed in order to impart centrifugal force to a material, a separation chamber receiving portion that penetrates in a direction parallel to the axis of the rotor, and a continuous sample provided inside the separation chamber receiving portion. In a centrifuge rotor having a transparent separation chamber that separates physically, an upper surface and a lower surface of the separation chamber are flat.