Centrifugal machine

Abstract

The utility model relates to the technical field of biochemical experiment automation equipment, and discloses a centrifugal machine which comprises a vertically-arranged motor base, a motor installed below the motor base, a rotating shaft arranged above the motor base and connected to a motor shaft, an I-shaped centrifugal support installed on the rotating shaft, and a rotating shaft connected to the I-shaped centrifugal support. A cradle is rotatably mounted in two notches of the centrifugal support and comprises a cradle support, a plate frame and centrifugal tubes, two ends of the cradle support are connected with the notches of the centrifugal support through short shafts, the plate frame is mounted on the cradle support and provided with a plurality of clamping holes used for placing the centrifugal tubes, and the centrifugal tubes are mounted in the clamping holes. And the short shaft is positioned above the gravity center of the cradle. According to the utility model, liquid drops on the wall of the centrifugal tube are thrown off through low-speed rotation of the direct-current motor.

Description

TECHNICAL FIELD

[0001] The utility model relates to biochemical experiment automation equipment technical field, especially centrifuge. BACKGROUND

[0002] In biological experiments, various different operations are carried out on the sample at each stage of the operation, such as oscillation mixing, liquid taking and liquid injection. As a sample carrier, the centrifugal tube will cause the sample solution to adhere to the tube wall during various operations, thereby causing measurement errors of the sample solution during the operation and affecting the accuracy of the experimental data.

[0003] Therefore, in order to avoid the above problems, the experimental personnel will usually measure the operation before, and the centrifugal tube is thrown to make the liquid drops on the tube wall fall into the centrifugal tube. However, for batch automatic operation of biological experiments, this method cannot meet the work needs. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the above problems, and provides a centrifuge, which makes liquid drops on the centrifugal tube wall fall off through slow rotation of a DC motor.

[0005] The utility model adopts the technical scheme of:

[0006] A centrifuge is characterized by comprising a motor seat arranged vertically, a motor being installed below the motor seat, a rotating shaft being arranged above the motor seat, the rotating shaft being connected to a motor shaft, an I-shaped centrifugal support being installed on the rotating shaft, a cradle being rotatably installed in two notches of the centrifugal support, the cradle comprising a cradle support, a plate frame and a centrifugal tube, two ends of the cradle support being connected to the notch positions of the centrifugal support through a short shaft, the plate frame being installed on the cradle support, the plate frame being provided with a plurality of clamping holes for placing the centrifugal tube, and the short shaft being located above the center of gravity of the cradle.

[0007] Further, a shell is arranged outside the centrifuge, the shell is barrel-shaped, a disc plate is arranged in the middle of the shell, and the disc plate is fixed to the upper end of the motor seat.

[0008] Further, the height of the cradle support is less than the height of the centrifugal tube, an avoiding hole is arranged below the cradle support, and the avoiding hole corresponds to the position of the centrifugal tube on the plate frame.

[0009] Further, positioning holes are arranged on the upper surface of the cradle support and the plate frame, and the plate frame and the cradle support are fixed through a positioning pin.

[0010] Further, a mounting flange is arranged below the motor seat, the motor seat is hollow, and the motor is arranged in the middle hole of the motor seat.

[0011] Further, the motor shaft and the rotating shaft are connected through a shaft coupling, and an opening is arranged on the motor base and corresponds to the position of the shaft coupling.

[0012] Further, the motor is a direct-current brushless toothless slot motor.

[0013] The utility model discloses the beneficial effect is:

[0014] (1) through low speed centrifugal operation, the liquid drop on centrifugal tube falls back to centrifugal tube;

[0015] (2) the centrifuge structure is small, realizes the isolation with surrounding equipment through the shell, can be conveniently integrated in the automation system;

[0016] (3) the centrifugal tube tail end of the centrifugal tube rotation of cradle structure is guided to the rotation axis, and the liquid drop on the centrifugal tube wall is thrown to the lower of centrifugal tube. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure Figure 1 It is the three-dimensional schematic diagram of the utility model;

[0018] Figure Figure 2 It is the half cutaway view of the utility model;

[0019] Figure Figure 3 It is the structure schematic diagram after removing the shell;

[0020] Figure Figure 4 It is the structure schematic diagram after removing the shell;

[0021] The reference signs in the drawings are as follows:

[0022] 1. motor base; 2. mounting flange;

[0023] 3. motor; 4. shell;

[0024] 5. disc plate; 6. rotating shaft;

[0025] 7. motor shaft; 8. shaft coupling;

[0026] 9. opening; 10. centrifugal support;

[0027] 11. cradle; 12. cradle support;

[0028] 13. plate frame; 14. centrifugal tube;

[0029] 15. short shaft; 16. positioning hole;

[0030] 17. avoiding hole. DETAILED DESCRIPTION

[0031] The specific embodiments of the centrifuge of the utility model will be described in detail below with reference to the drawings.

[0032] Referring to the drawings Figure 1 , 2 , the centrifuge comprises a motor base 1 arranged vertically, a mounting flange 2 is arranged below the motor base 1, and the mounting flange 2 is used for mounting the centrifuge in an automatic system. The motor base 1 is hollow inside, and a direct-current brushless gearless motor 3 is mounted in the middle hole of the motor base 1, so as to provide slow-speed adjustable rotary motion.

[0033] A shell 4 is arranged on the whole centrifuge, the shell 4 is barrel-shaped, a disc plate 5 is arranged in the middle part, and the disc plate 5 is fixed to the upper end of the motor base 1. The shell 4 covers the centrifuge, so as to prevent the centrifuge tube from being thrown out accidentally or external foreign matters from entering.

[0034] Referring to the drawings Figure 3 , 4 A rotating shaft 6 is arranged above the motor base 1, a motor shaft 7 is connected with the rotating shaft 6 through a shaft coupling 8, the shaft coupling 8 is arranged in the middle hole of the motor base 1, an opening 9 is arranged on the motor base 1, the position of the opening 9 corresponds to the position of the shaft coupling 8, and the opening 9 is used for mounting and maintaining the shaft coupling 8.

[0035] The rotating shaft 6 is provided with an I-shaped centrifuge support 10, which is driven by the motor 3 to rotate, the rotating shaft 6 is arranged at the central position of the centrifuge support 10, a cradle 11 is arranged in the two notches of the I-shaped centrifuge support 10, so as to rotate the cradle 11, and the cradle 11 can swing.

[0036] The cradle 11 comprises a cradle support 12, a plate frame 13 and a centrifuge tube 14, the two ends of the cradle support 12 are connected with the notch positions of the centrifuge support 10 through a short shaft 15, the short shaft 15 is connected with the centrifuge support 10 through a bearing, the plate frame 13 is arranged on the cradle support 12, positioning holes 16 are arranged on the upper surface of the cradle support 12 and the plate frame 13, and the plate frame 13 is fixed with the cradle support 12 through a positioning pin (not shown in the figure). The plate frame 13 is provided with a plurality of clamping holes, which are used for placing the centrifuge tube 14, and the short shaft 15 is located above the center of gravity of the cradle 11, so that the plate frame 13 and the centrifuge tube 14 will not overturn when swinging.

[0037] When the height of the cradle support 12 is less than the height of the centrifuge tube 14 during design, an avoiding hole 17 is arranged below the cradle support 12, and the avoiding hole 17 corresponds to the position of the centrifuge tube 14 on the plate frame 13.

[0038] When the cradle 11 is subjected to external force, the cradle 11 will swing due to the bearing rotary connection between the short shaft 15 and the centrifuge support 10.

[0039] When the centrifuge works, the rotation of the motor 3 is controlled by the system control unit, the motor 3 drives the centrifuge support to rotate through the shaft coupling 8 and the rotating shaft 6, when the centrifuge support rotates, the cradle 11 on both sides is rotated by the centripetal force generated by the centrifugal tube, the tail end of the centrifugal tube 14 points to the rotating shaft, and the liquid drops on the wall of the centrifugal tube 14 are thrown to the lower side of the centrifugal tube 14.

[0040] The preferred embodiments of the present application are described above, it should be pointed out that, for those skilled in the technical field, without departing from the principles of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A centrifuge, characterized by: The utility model discloses a vertical motor seat is installed with motor below, and the upper portion of motor seat is provided with rotating shaft, and rotating shaft is connected to motor shaft, and the I-shaped centrifugal support is installed on rotating shaft, and the rocking cradle is rotatably installed in the two notches of centrifugal support, and the rocking cradle includes rocking cradle support, board frame and centrifugal tube, and the both ends of rocking cradle support are connected with the notch position of centrifugal support through short shaft, and the board frame is installed on rocking cradle support, and the board frame is provided with a plurality of clamping holes for placing centrifugal tube, and the short shaft is located above the gravity center of rocking cradle.

2. The centrifuge of claim 1, wherein: The utility model discloses a housing is arranged outside the centrifugal machine, and the housing is barrel-shaped, and the middle part is provided with a disc plate, and the disc plate is fixed on the upper end of motor seat.

3. The centrifuge of claim 1, wherein: The height of rocking cradle support is less than the height of centrifugal tube, and the avoiding hole is arranged below rocking cradle support, and the avoiding hole corresponds to the position of centrifugal tube on board frame.

4. The centrifuge of claim 1, wherein: The upper surface of rocking cradle support and board frame are both provided with positioning hole, and the board frame is fixed with rocking cradle support through positioning pin.

5. The centrifuge of any one of claims 1 to 4, wherein: The flange is arranged below motor seat, and the inside of motor seat is hollow, and the motor is arranged in the middle hole of motor seat.

6. The centrifuge of claim 5, wherein: The motor shaft is connected with rotating shaft through coupling, and the opening is arranged on motor seat, and the position of opening corresponds to the position of coupling.

7. The centrifuge of any one of claims 1 to 4, wherein: The motor is direct current brushless toothless motor.

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