JP2666587B2 - centrifuge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifuge for centrifuging samples of flammable chemicals, flammable chemicals and the like, for example, explosion-proof centrifuges.

[0002]

2. Description of the Related Art As is well known, a conventional explosion-proof centrifugal separator has the above-mentioned sample or its gas component (hereinafter referred to as sample).
In order to prevent explosion due to ignition in the event of leakage, electric parts that generate electric sparks are sealed.

[0003]

The sample is placed in a container such as a bottle or a centrifuge tube, and the container is set on a rotor and centrifuged.
The container may be crushed or damaged, and the sample or the like in the container may leak.

In the case of an explosion-proof centrifuge, as described above,
Since the electric parts that generate electric sparks are sealed, they do not ignite and explode even if the sample or the like leaks.
However, since the rotor itself rotates at a high speed and has a large rotational energy, in the event of an accident such as detachment of the rotor, the rotational energy may become a heat source and cause a fire or explosion.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to quickly detect leakage of a sample or the like and to prevent ignition or explosion caused by the leakage of the sample or the like.

[0006]

In order to achieve the above object, the centrifuge of the present invention is characterized in that a gas detection sensor is provided in a rotor chamber. Alternatively, a gas suction pipe connected to the gas detector is opened in the rotor chamber.

[0007]

With the centrifuge configured as described above, it is possible to quickly detect leakage of a sample or the like, thereby preventing ignition or explosion due to leakage of the sample or the like. Becomes

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an embodiment of the present invention.
And an evaporator 5 having a cooling pipe wound around the outer periphery thereof, the rotor 3 containing the sample via the container (not shown), and being rotated at a high speed by a motor 9 in the evaporator 5, an evaporator 5. And a gas detector 2 connected to the detection sensor 1 for receiving an output thereof and generating a signal for stopping the motor 9 when detecting a sample leak. I have.

The gas detection sensor 1 is installed at a position radially outward from the rotor 3 having the largest diameter to be set so that leakage of a sample or the like can be detected quickly. As a result,
Leakage of a sample or the like can be detected quickly, and ignition and explosion can be prevented beforehand by stopping the motor 9.

FIG. 2 shows another embodiment of the present invention.
Instead of the detection sensor 1, a gas suction pipe 10 opened in the evaporator 5 is provided, and the other end of the suction pipe 10 is connected to the gas detector 2 via the suction pump 6. The sample leaked by the suction pump 6 is detected by the gas detector 2.
, It is possible to reliably and promptly detect leakage of a sample or the like. The gas detector 2 in this case is slightly different from the detector 2 shown in FIG. 1 and detects the presence or absence of gas directly and generates a signal for stopping the motor 9.

FIG. 3 shows still another embodiment of the present invention, in which a water trap 7 and a filter 8 are provided between the suction pipe 10 and the suction pump 6, and the water in the evaporator 5 is reduced. By preventing the gas detector 2 from entering the gas detector 2, damage or erroneous detection of the gas detector 2 can be prevented.

[0012]

According to the present invention, since leakage of a sample or the like can be detected reliably and promptly, it is possible to prevent a flammable or explosive beforehand, and to prevent a flammable chemical substance,
A sample such as a combustible chemical can be safely centrifuged.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a centrifuge according to the present invention.

FIG. 2 is a configuration diagram showing another embodiment of the present invention.

FIG. 3 is a configuration diagram showing still another embodiment of the present invention.

[Explanation of symbols]

1 is a gas detection sensor, 2 is a gas detector, 3 is a rotor, 5
Is an evaporator, 6 is a suction pump, 7 is a water trap, 9
Denotes a motor, and 10 denotes a gas suction pipe.

Claims (4)

(57) [Claims] 1. A centrifugal separator for centrifuging a rotor containing a sample of a flammable chemical substance, a combustible chemical substance or the like at a high speed in a rotor chamber, wherein a gas detection sensor is provided in the rotor chamber. A centrifuge. 2. A centrifugal separator for centrifuging a rotor containing a sample of a flammable chemical substance, a combustible chemical substance or the like at a high speed in a rotor chamber, wherein a gas suction pipe opened in the rotor chamber is provided. A centrifugal separator, wherein the gas suction pipe is connected to a gas detector. 3. The gas trap according to claim 2, wherein a water trap is provided between the gas suction pipe and the gas detector to prevent moisture in the rotor chamber from entering the gas detector. centrifuge. 4. The centrifugal separator according to claim 1, wherein an installation position of the gas detection sensor or the gas suction pipe is located radially outside a maximum diameter of a rotor to be set.