Centrifuge rotor

Abstract

The present invention provides a centrifuge rotor, which relates to the field of rotor technology. The centrifuge rotor comprises a rotor body, a first mounting slot is provided at the top of the rotor body, a second mounting slot is provided at the center of the bottom of the first mounting slot, a mounting hole is provided at one side of the bottom of the second mounting slot, a sealing ring is slidably connected to the outer periphery of the bottom of the first mounting slot, and a rotor cover is slidably connected to the top wall of the sealing ring. The load of the overall motor and circuit board is reduced by low density, the service life of the motor and circuit board is extended, and energy is saved. In addition, it has good high strength, high wear resistance, and high chemical resistance. High wear resistance and aging resistance extend the service life of the rotor. High chemical resistance is conducive to the rotor being suitable for complex and changeable laboratory environments. High chemical resistance is not easy to cause the rotor to rust, reducing the probability of explosion. At the same time, by adopting high-toughness materials, the actual angle is larger than that of traditional aluminum alloy rotors, and the actual centrifugal effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of rotors, in particular to a centrifuge rotor. Background Art

[0002] Centrifuge is a machine that uses centrifugal force to separate liquid and solid particles or components in a mixture of liquid and liquid. The size of the centrifugal force is determined by the rotation speed, rotation radius and the melt mass of the material. Centrifuges are widely used in chemical engineering, petroleum, food processing, pharmaceuticals, mineral processing engineering, coal, water treatment, nuclear energy industry and shipping.

[0003] At present, the existing centrifuge rotors lack lightweight design in actual use and operation. The actual motor and circuit board are heavily loaded, and the working energy consumption is high. In addition, they lack good high strength, high wear resistance, and high chemical resistance. They are easily damaged during actual operation, which causes serious safety hazards. At the same time, the materials lack high toughness. Most of them are traditional aluminum alloy rotors. The actual rotor angle is small, and the actual centrifugal effect is not good.

[0004] For this purpose, we developed new centrifuge rotors. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a centrifuge rotor to solve the above problems.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention is implemented by the following technical scheme: a centrifuge rotor, comprising a rotor body, a first installation slot is opened on the top of the rotor body, a second installation slot is opened at the center of the bottom of the first installation slot, and a mounting hole is opened on one side of the bottom of the second installation slot;

[0009] A sealing ring is slidably connected to the periphery of the bottom of the first installation slot, a rotor cover is slidably connected to the top wall of the sealing ring, the rotor cover is fixedly installed at the opening above the first installation slot, and a rotor handle is provided at the center of the top of the rotor cover;

[0010] An upper gland is provided at the bottom of the second mounting slot, a locking nut is provided in the middle of the upper gland, a hexagonal screw is provided in the mounting hole, a mounting slot is provided at the center of the bottom wall of the rotor body, and a lower gland is provided in the mounting slot.

[0011] Preferably, the top of the hexagonal screw is slidably connected to a hexagonal groove corresponding to an upper pressure cover, and the bottom of the hexagonal screw is threadedly connected to a thread groove corresponding to a lower pressure cover.

[0012] Preferably, the locking nut is threadedly connected to the rotor cover and the rotor handle, the rotor handle is slidably connected in the rotor cover, and the locking nut passes through the sealing ring.

[0013] Preferably, the rotor is prepared:

[0014] S1. Add 1 mol of adipic acid and hexamethylenediamine to a high temperature reactor and add 6 mol of water, heat to 214 degrees Celsius, pressurize to 1.8 MPa, react for three hours, gradually reduce the pressure to room temperature, add 8 g of carbon, 5 g of molybdenum disulfide and 1.5 g of polytetrafluoroethylene, and stir for 30 minutes;

[0015] S2. After the reaction was reduced to -0.09MPa for 30 minutes, the temperature was raised to 280 degrees and then transferred to the dispersion reactor. After the pneumatic disperser was turned on, 2g of glass fiber and 12g of carbon brazing fiber were added and dispersed for 1 hour. After the mold was cast and naturally cooled, the rotor profile was taken out (the speed was below 12000rpm);

[0016] S3 or transferred to a centrifugal casting mold with a dispenser pump and then removed to obtain a rotor profile (speed above 12000rpm and below 20000rpm);

[0017] S4. After the rotor profile is obtained, it is placed for more than 6 months to eliminate stress and then machined into a high-speed centrifuge rotor. The actual rotor density: the density of the cast nylon rotor is 1.15g / cm3, which is about 2 / 3 of carbon fiber, 2 / 5 of aluminum, 1 / 4 of titanium alloy, and 3 / 20 of stainless steel.

[0018] S5. The rotor efficiency is more than twice that of the traditional aluminum alloy rotor. The rotor density is small, and the small mass of the same volume is more advantageous for centrifuging small centrifuge tubes. The acceleration and deceleration speed of 24*1.5ml is about 2.4 times that of the traditional aluminum alloy.

[0019] (III) Beneficial effects

[0020] The present invention provides a centrifuge rotor having the following beneficial effects:

[0021] 1. The centrifuge rotor has a density of 1.15g / cm3, which is about 2 / 3 of carbon fiber, 2 / 5 of aluminum, 1 / 4 of titanium alloy, and 3 / 20 of stainless steel. The load on the overall motor and circuit board is small, which extends the service life of the motor and circuit board, and has low working energy consumption and energy saving.

[0022] 2. The centrifuge rotor has good high strength, high wear resistance and high chemical resistance. High wear resistance and aging resistance extend the service life of the rotor. High chemical resistance is conducive to the rotor's application in complex and changeable laboratory environments. High chemical resistance is not easy to cause the rotor to rust, reducing the probability of explosion.

[0023] 3. The centrifuge rotor adopts high-toughness material, so its actual angle is larger than that of traditional aluminum alloy rotors, and its actual centrifugal effect is better, which is about 1.25 to 1.84 times that of aluminum alloy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of each component of the centrifuge rotor of the present invention;

[0025] Figure 2 It is a schematic diagram of the centrifuge rotor assembly structure of the present invention.

[0026] Among them, 1. rotor body; 2. first installation slot; 3. second installation slot; 4. sealing ring; 5. rotor cover; 6. rotor handle; 7. upper pressure cover; 8. locking nut; 9. installation hole; 10. lower pressure cover; 11. hexagonal screw. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1:

[0029] like Figure 1-2 As shown, an embodiment of the present invention provides a centrifuge rotor, including a rotor body 1, a first mounting slot 2 is provided on the top of the rotor body 1, a second mounting slot 3 is provided at the center of the bottom of the first mounting slot 2, a mounting hole 9 is provided on one side of the bottom of the second mounting slot 3, a sealing ring 4 is slidably connected to the outer periphery of the bottom of the first mounting slot 2, a rotor cover 5 is slidably connected to the top wall of the sealing ring 4, the rotor cover 5 is fixedly installed at the opening above the first mounting slot 2, a rotor handle 6 is provided at the center of the top of the rotor cover 5, an upper pressure cover 7 is provided at the bottom of the second mounting slot 3, and a locking nut 8 is provided in the middle of the upper pressure cover 7. A hexagonal screw 11 is arranged in the mounting hole 9, a mounting groove is opened at the center of the bottom wall of the rotor body 1, and a lower pressure cover 10 is arranged in the mounting groove, the top of the hexagonal screw 11 is slidably connected with the hexagonal slot corresponding to the upper pressure cover 7, the bottom of the hexagonal screw 11 is threadedly connected with the threaded groove corresponding to the lower pressure cover 10, the locking nut 8 is threadedly connected with the rotor cover 5 and the rotor handle 6, the rotor handle 6 is slidably connected in the rotor cover 5, the locking nut 8 passes through the sealing ring 4, the overall rotor is easy to disassemble and assemble, and is conducive to regular maintenance and overhaul.

[0030] Embodiment 2:

[0031] The difference between this embodiment and the first embodiment is that the rotor is prepared as follows:

[0032] S1. Add 1 mol of adipic acid and hexamethylenediamine to a high temperature reactor and add 6 mol of water, heat to 214 degrees Celsius, pressurize to 1.8 MPa, react for three hours, gradually reduce the pressure to room temperature, add 8 g of carbon, 5 g of molybdenum disulfide and 1.5 g of polytetrafluoroethylene, and stir for 30 minutes;

[0033] S2. After the reaction was reduced to -0.09MPa for 30 minutes, the temperature was raised to 280 degrees and then transferred to the dispersion reactor. After the pneumatic disperser was turned on, 2g of glass fiber and 12g of carbon brazing fiber were added and dispersed for 1 hour. After the mold was cast and naturally cooled, the rotor profile was taken out (the speed was below 12000rpm);

[0034] S3 or transferred to a centrifugal casting mold with a dispenser pump and then removed to obtain a rotor profile (speed above 12000rpm and below 20000rpm);

[0035] S4. After the rotor profile is obtained, it is placed for more than 6 months to eliminate stress and then machined into a high-speed centrifuge rotor. The actual rotor density: the density of the cast nylon rotor is 1.15g / cm3, which is about 2 / 3 of carbon fiber, 2 / 5 of aluminum, 1 / 4 of titanium alloy, and 3 / 20 of stainless steel.

[0036] S5. The rotor efficiency is more than twice that of the traditional aluminum alloy rotor. The rotor density is small, and the small mass of the same volume is more advantageous for centrifuging small centrifuge tubes. The acceleration and deceleration speed of 24*1.5ml is about 2.4 times that of the traditional aluminum alloy.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifuge rotor, comprising a rotor body (1), characterized in that: The rotor body (1) is provided with a first installation slot (2) at the top, a second installation slot (3) is provided at the center of the bottom of the first installation slot (2), and a mounting hole (9) is provided at one side of the bottom of the second installation slot (3); A sealing ring (4) is slidably connected to the periphery of the bottom of the first installation slot (2), a rotor cover (5) is slidably connected to the top wall of the sealing ring (4), the rotor cover (5) is fixedly installed at the opening above the first installation slot (2), and a rotor handle (6) is provided at the center of the top of the rotor cover (5); An upper pressure cover (7) is arranged at the bottom of the second installation slot (3), a locking nut (8) is arranged in the middle of the upper pressure cover (7), a hexagonal screw (11) is arranged in the installation hole (9), and a mounting slot is opened at the center of the bottom wall of the rotor body (1), and a lower pressure cover (10) is arranged in the mounting slot; The top of the hexagonal screw (11) is slidably connected to a hexagonal groove corresponding to the upper pressure cover (7), and the bottom of the hexagonal screw (11) is threadedly connected to a thread groove corresponding to the lower pressure cover (10); The locking nut (8) is threadedly connected to the rotor cover (5) and the rotor handle (6), the rotor handle (6) is slidably connected in the rotor cover (5), and the locking nut (8) passes through the sealing ring (4); The rotor preparation: S1. Add 1 mol of adipic acid and hexamethylenediamine to a high temperature reactor, add 6 mol of water, heat to 214 degrees Celsius, pressurize to 1.8 MPa, react for three hours, gradually reduce the pressure to room temperature, add 8 g of carbon, 5 g of molybdenum disulfide and 1.5 g of polytetrafluoroethylene, and stir for 30 minutes; S2. After the reaction was reduced to -0.09MPa for 30 minutes, the temperature was raised to 280 degrees and then transferred to the dispersion reactor. After the pneumatic disperser was turned on, 2g of glass fiber and 12g of carbon brazing fiber were added and dispersed for 1 hour. After the mold was cast and naturally cooled, the rotor profile was taken out and the speed was below 12000rpm; S3 or transferred to a centrifugal casting mold with a dispenser pump and then removed to obtain a rotor profile after centrifugal casting, the speed of which is above 12000rpm and below 20000rpm; S4. After the rotor profile is placed for more than 6 months to eliminate stress, it is machined to make a high-speed centrifuge rotor. The actual rotor density: the density of the cast nylon rotor is 1.15g / cm3, which is about 2 / 3 of carbon fiber, 2 / 5 of aluminum, 1 / 4 of titanium alloy, and 3 / 20 of stainless steel; S5. The rotor efficiency is more than twice that of the traditional aluminum alloy rotor. The rotor density is small, and the small mass of the same volume is more advantageous for centrifuging small centrifuge tubes. The acceleration and deceleration speed of 24*1.5ml is about 2.4 times that of the traditional aluminum alloy.

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