Continuous flow type centrifuge having rotor body and core body disposed therein
A continuous flow type centrifuge to which a liquid sample is continuous supplied. The centrifuge includes a rotor rotatably supported by a main housing and drivingly rotated by a motor. The rotor includes a cylindrical rotor body, a hollow cylindrical core body, and end plates. The hollow cylindrical core body is disposed in the rotor body providing a space therebetween. The core body has an upper open end, a lower open end and an outer peripheral surface provided with a plurality of partitioning walls positioned at an equal interval in a circumferential direction of the core body for providing a plurality of cavities each defined by the core body, the rotor body and neighboring partitioning walls. The end plates include an upper end plate disposed to cover the upper open end, and a lower end plate disposed to cover the lower open end. An upper welding part is disposed at a boundary between the upper end plate and the upper open end, and a lower welding part is disposed at a boundary between the lower plate and the lower open end. The components of the rotor are made from heat resistant and corrosion resistant material, typically titanium or titanium alloy.
1. A continuous flow type centrifuge comprising:
a main housing;
a rotor rotatably supported by the main housing and having a rotation axis, the rotor comprising
a cylindrical rotor body;
a hollow cylindrical core body disposed in the rotor body providing a space therebetween, the core body having a first open end, a second open end and an outer peripheral surface provided with a plurality of partitioning walls positioned at an equal interval in a circumferential direction of the core body for providing a plurality of cavities each defined by the core body, the rotor body and neighboring partitioning walls;
end plates comprising a first end plate disposed to cover the first open end, and a second end plate disposed to cover the second open end; and
welding parts comprising a first welding part disposed at a boundary between the first end plate and the first open end to cover gaps between the first end plate and the first open end, and a second welding part disposed at a boundary between the second end plate and the second open end to cover gaps between the second end plate and the second open end; and
a drive motor coupled to the rotor for rotating the rotor about the rotation axis.
2. The continuous flow type centrifuge as claimed in claim 1 , further comprising:
a fluid inlet unit in fluid communication with the plurality of cavities; and
a fluid outlet unit in fluid communication with the plurality of cavities.
3. The continuous flow type centrifuge as claimed in claim 1 , wherein the rotor body, the core body and the end plates are made from a material providing a heat resistance up to a temperature of 130° C. without degradation of mechanical strength.
4. The continuous flow type centrifuge as claimed in claim 1 , wherein the rotor body, the core body and the end plates are made from a material providing a corrosion resistance against caustic soda of not more than 10% concentration.
5. The continuous flow type centrifuge as claims in claim 1 , wherein the core body and the end plates are made from one of titanium and titanium alloy.
6. The continuous flow type centrifuge as claimed in claim 1 , wherein the first end plate is threadingly engaged with the first open end and the second end plate is threadingly engaged with the second open end.
7. The continuous flow type centrifuge as claimed in claim 6 , wherein the first end plate and the second end plate have a first outer diameter and are formed with male thread sections having a second outer diameter smaller than the first outer diameter,
wherein the first open end and the second open end have open end sections having a first inner diameter substantially equal to the first outer diameter, and have female thread sections threadingly engagable with the male thread section and having a second inner diameter smaller than the first inner diameter to provide stepped portions at boundary between the open end sections and the female thread sections, the end plates being ultimately abuttable on the stepped portions, and
wherein the first and second welding parts are respectively disposed to cover gaps between the first outer diameters of the first and second end plates and the first inner diameters of the first and second open ends.