A traction centrifugal device

Abstract

The present invention provides a traction centrifugal device, including a shell, a first traction rope and a second traction rope. The shell is provided with a rotatable central axis, the central axis is provided with at least one centrifugal unit, and a brake is provided between the central axis and the shell. A first swing motor is provided on the other end of the first traction rope, and a second swing motor is provided on the other end of the second traction rope. The solution to be centrifuged is loaded into the centrifugal unit, and the first swing motor is turned on to drive the first traction rope to pull the central axis to rotate. At this time, the second traction rope on the second swing motor is wound around the central axis and generates resistance to slow down the central axis. Afterwards, the second swing motor pulls the second traction rope to drive the central axis to rotate, and the first traction rope acts as a resistance. Since the first traction rope and the second traction rope are at an angle of 180 degrees, the central axis is driven to rotate by alternately and repeatedly pulling the traction rope, so as to achieve the effect of centrifugal separation of the solution.

Description

Technical Field

[0001] The invention relates to the field of experimental equipment, in particular to a traction centrifugal device. Background Art

[0002] The centrifuges currently used in drug and food inspection are suitable for centrifugal separation of large-volume samples. However, the electric-driven centrifuges used for centrifugal separation of small-volume samples have a low rotation speed, which makes it difficult to conduct simple on-site analysis and effectively centrifuge a small amount of sample solution.

[0003] The existing technology has the following problems: 1. The rotation speed of the on-site centrifuge is insufficient; 2. It is not suitable for centrifugal separation of small or trace sample solutions; 3. The centrifugal effect is poor. The device designed for traction centrifugation of the present invention uses swing traction to achieve the effect of efficient separation centrifugation and centrifugal separation of sample solutions, which can be used to improve the shortcomings of the current small-scale rapid centrifugation equipment. Summary of the invention

[0004] The object of the present invention is to provide a traction centrifuge device, which aims to solve the problem that the existing centrifuge has poor centrifugal effect on simple on-site analysis and a small amount of sample solution.

[0005] To achieve the purpose of the present invention, the technical solution adopted by the present invention is: a traction centrifugal device, comprising:

[0006] A shell, wherein a rotatable central shaft is disposed in its inner cavity, at least one centrifugal unit for storing a solution is disposed on the top of the central shaft, and a brake is disposed between the top of the central shaft and the shell;

[0007] A first traction rope, one end of which is arranged on the middle part of the central axis, and the other end of which extends tangentially to the central axis and is arranged on the output shaft of a first swing motor, and the first swing motor is arranged on the inner side wall of the housing;

[0008] A second traction rope, one end of which is arranged on the middle part of the central axis and is located between the first traction rope and the bottom end of the central axis, and the other end of which extends tangentially to the central axis and is arranged on the output shaft of the second swing motor, the first traction rope and the second traction rope are wound around the central axis one clockwise and the other counterclockwise, and the second swing motor is arranged on the inner wall of the shell at an angle of 180 degrees to the first swing motor.

[0009] Preferably, a second swing arm is provided between the second swing motor and the second traction rope, and the second swing arm is provided on the output shaft of the second swing motor.

[0010] Preferably, the centrifugal unit comprises a rotor fixing block sleeved and connected to the central axis, a test tube sleeve arranged around the fixing block, and a centrifuge tube sleeved in the test tube sleeve, and a plurality of the test tube sleeves and the centrifuge tubes are provided.

[0011] Preferably, eight test tube sleeves are provided, and the eight test tube sleeves are arranged on the rotor fixing block at equal intervals.

[0012] Preferably, an angle of orthographic projection is set between the central axis of the test tube sleeve and the central axis of the central shaft, and the central axis of the test tube sleeve and the central axis of the central shaft do not intersect.

[0013] Preferably, the angle is between 0° and 15°.

[0014] Preferably, two centrifugal units are provided, and the two centrifugal units are sequentially sleeved on the central axis from top to bottom.

[0015] Preferably, the braking member is a brake or a damper.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Load the solution to be centrifuged into the centrifugal unit. When separating, the first swing motor drives the first traction rope to pull the central axis to rotate. At this time, the second traction rope on the second swing motor is automatically wound around the central axis by the rotation of the central axis, and the winding of the second traction rope will generate corresponding resistance. Similarly, when the second swing motor pulls the second traction rope to drive the central axis to rotate, the first traction rope acts as a resistance. Since the first traction rope and the second traction rope are at an angle of 180 degrees, the traction rope is pulled repeatedly by alternating methods, so that the central axis will continue to rotate in a single direction, thereby achieving the effect of centrifugal separation of the solution.

[0018] 2. The swing motor can increase the arc of the end swing by using the swing rod, and then increase the length of the pulling rope, so that the rotation speed of the central axis can be increased. Therefore, different lengths of the swing rod can be set according to the needs, so as to control the rotation speed of the central axis.

[0019] 3. Two centrifugal units can be provided and installed on the central axis in an upper and lower arrangement. Each centrifugal unit has a plurality of test tube sleeves, which are sleeved on the central axis through a rotor fixing block. The sample solution to be centrifuged can be loaded into a centrifuge tube, and then the centrifuge tube can be placed in the test tube sleeve. In order to improve the effect of centrifugation of the sample solution, an angle is set between the test tube sleeve and the central axis, and the central axis of the test tube sleeve does not intersect with the central axis of the central axis, thereby generating a strong centrifugal force during rotation, and under the action of the centrifugal force, the suspended tiny particles in the sample solution settle at a certain speed, so that the sample solution in the centrifuge tube can be centrifuged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A cross-sectional view of the traction centrifuge device described in the embodiment;

[0021] Figure 2 A partial view of the traction centrifuge device described in the embodiment;

[0022] Figure 3 A schematic diagram of a traction centrifuge device according to an embodiment;

[0023] Reference numerals:

[0024] 10. housing; 101. central axis; 102. centrifugal unit; 103. brake member;

[0025] 1021. rotor fixing block; 1022. test tube sleeve; 1023. centrifuge tube;

[0026] 20. a first traction rope; 201. a first swing rod;

[0027] 30. second traction rope; 301. second swing rod;

[0028] 40. A first swing motor; 50. A second swing motor. DETAILED DESCRIPTION

[0029] The present invention proposes a new solution. For a clearer representation, the present invention is described in detail below with reference to the accompanying drawings.

[0030] See also Figures 1 to 3The present embodiment provides a traction centrifugal device, which includes a housing 10, a first traction rope 20 and a second traction rope 30. A rotatable central shaft 101 is disposed in the inner cavity of the housing 10, and at least one centrifugal unit 102 for storing a solution is disposed at the top of the central shaft 101. A brake 103 is disposed between the top of the central shaft 101 and the housing 10, and the brake 103 may be a brake or a damper. One end of the first traction rope 20 is disposed on the middle of the central shaft 101, and the other end thereof extends tangentially to the central shaft 101 and is disposed on the output shaft of the first swing motor 40, and the first swing motor 40 is disposed on the inner side wall of the housing 10. One end of the second traction rope 30 is arranged on the middle of the central axis 101, and it is located between the first traction rope 20 and the bottom end of the central axis 101, and the other end thereof extends tangentially to the central axis 101 and is arranged on the output shaft of the second swing motor 50, the first traction rope 20 and the second traction rope 30 are wound around the central axis 101 in a clockwise direction and a counterclockwise direction respectively, and the second swing motor 50 is arranged on the inner side wall of the housing 10 at an angle of 180 degrees to the first swing motor 40. The first traction rope 20 and the second traction rope 30 can be belts, and the belts with good torque and toughness can provide a large centrifugal force after being tightly wound, thereby driving the central axis 101 to rotate.

[0031] In this embodiment, the solution of medicine or food can be centrifuged to meet the centrifugal effect of small dose and high efficiency. It should be noted here that the first swing motor 40 and the second swing motor 50 swing synchronously and in the same direction, and the first traction rope and the second traction rope are at an angle of 180 degrees, and the central axis is driven to rotate by repeatedly pulling the traction rope alternately. If pulling the traction rope is the process of driving the central axis 101 to rotate, the traction rope will change from being wound to being detached from the central axis 101; then when the traction rope swings in the opposite direction, it will be rewound onto the central axis 101. Because the first traction rope 20 and the second traction rope 30 are wound around the central axis 101, one clockwise and the other counterclockwise, the continuous swinging traction provides the power for the central axis 101 to rotate.

[0032] Specifically, the solution to be centrifuged is loaded into the centrifugal unit 102. During separation, the first swing motor 40 drives the first traction rope 20 to pull the central shaft 101 to rotate. At this time, the second traction rope 30 on the second swing motor 50 is automatically wound around the central shaft 101 by the rotation of the central shaft 101, and the winding of the second traction rope 30 generates corresponding resistance. Since the first traction rope 20 and the second traction rope 30 are wound around the central axis 101 in a clockwise direction and a counterclockwise direction respectively, the exit positions of the two are 180 degrees opposite to each other according to the radially opposite sections of the central axis 101. When the first traction rope 20 is stretched outwards, causing the central axis 101 to rotate clockwise, the traction point of the second traction rope 30 moves inwards. At this time, the second traction rope 30, due to its slack state, will be driven by the central axis 101 due to the friction with the central axis 101 and the tension of the traction rope itself, and will be wound back around the central axis 101 counterclockwise. This is repeated to realize the rotation of the central axis 101, thereby achieving the effect of centrifugal separation of the solution. After the centrifugal operation of the solution is completed, the main shaft is braked by the stopper, and the first swing motor 40 and the second swing motor 50 are turned off. The housing 10 is opened to take out the centrifugal unit 102, and a new solution is put in for separation.

[0033] In this embodiment, the top of the housing has a protective cover, and the bottom is a cylinder, and the protective cover and the cylinder form a closed cavity, and the setting of the protective cover facilitates taking or placing the centrifugal unit 102. At the same time, the protective cover improves the safety of the use of the traction centrifugal device.

[0034] In this embodiment, a first swing rod 201 is provided between the first swing motor 40 and the first traction rope 20, and the first swing rod 201 is provided on the output shaft of the first swing motor 40. A second swing rod 301 is provided between the second swing motor 50 and the second traction rope 30, and the second swing rod 301 is provided on the output shaft of the second swing motor 50. The swing motor can increase the arc of the end swing by using the swing rod, thereby increasing the length of the pulling rope, so that the rotation speed of the central shaft 101 is increased. Therefore, different lengths of swing rods can be set according to needs, thereby achieving the control of the rotation speed of the central shaft 101.

[0035] In this embodiment, two centrifugal units 102 are provided, and the two centrifugal units 102 are sequentially sleeved on the central axis 101 from top to bottom. The centrifugal unit 102 includes a rotor fixing block 1021 sleeved and connected to the central axis 101, a test tube sleeve 1022 arranged around the fixing block, and a centrifugal tube 1023 sleeved in the test tube sleeve 1022, and a plurality of test tube sleeves 1022 and centrifugal tubes 1023 are provided. There are eight test tube sleeves 1022, and the eight test tube sleeves 1022 are arranged at equal intervals on the rotor fixing block 1021. By providing multiple layers, and each layer is provided with multiple test tube sleeves 1022, the sample processing capacity can be increased.

[0036] Specifically, the sample solution to be centrifuged is placed in the centrifuge tube 1023, and then the centrifuge tube 1023 is placed in the test tube sleeve 1022. When the central shaft 101 rotates, the central shaft 101 drives the entire centrifuge unit 102 to rotate synchronously through the connection of the rotor fixing block 1021, and then the sample solution in the centrifuge tube 1023 is centrifuged, and multiple identical and / or different sample solutions can be centrifuged each time, thereby improving the efficiency of centrifugation.

[0037] In the present embodiment, the central axis of the test tube sleeve 1022 is provided with an angle of positive projection with the central axis of the central axis of the central axis 101, and the central axis of the test tube sleeve 1022 is provided without intersecting with the central axis of the central axis 101. For centrifugal force, the farther away from the central axis 101 during rotation, the greater its linear velocity is, and in order to achieve the sedimentation of suspended microparticles in the sample solution at a certain speed during centrifugation. Therefore, a corresponding angle is provided, and through experimental analysis during design, an angle is provided between the test tube sleeve 1022 and the central axis 101, and when the central axis of the test tube sleeve 1022 is provided without intersecting with the central axis of the central axis 101, the effect of centrifugation and sedimentation can be improved, and its efficiency can be ensured.

[0038] Specifically, the angle of the angle is designed to be between 0° and 15° in this embodiment. A smaller inclination angle allows the centrifuge tube 1023 to contain more sample solution, and can achieve the purpose of settling the suspended microparticles at the bottom of the centrifuge tube 1023. Specifically, a strong centrifugal force is generated during rotation, and under the action of the centrifugal force, the suspended microparticles in the sample solution settle at a certain speed, so that the sample solution in the centrifuge tube 1023 can be centrifuged, thereby achieving the effect of improving the centrifugation of the sample solution.

[0039] The first swing motor 40 and the second swing motor 50 are both swing motors. The swing frequency of the swing motor can be adjusted, and then the frequency of pulling the traction rope can be controlled, thereby changing the rotation rate of the central shaft 101.

[0040] Specifically, when the solution to be centrifuged in the centrifuge tube is subjected to low-speed centrifugation, the two traction ropes are first wound forwardly and reversely on the central axis 101, and after connecting the rocking arm, the two swinging motors are set to low-speed swing. Then, after adding the particle suspension to the centrifuge tube in the centrifugal unit 102, the rotor fixing block 1021 is rotated and fixed on the central axis 101, and the two swinging motors are started at the same time for traction, so as to drive the central axis 101 for centrifugation. Under the action of centrifugal force, the tiny particles in the particle suspension are centrifugally settled at a relatively low speed, so that the sample solution can be separated and centrifuged. Similarly, during high-speed separation and centrifugation, the two swinging motors can be set to high-speed swing. The flexible control effect of the traction centrifuge device is improved.

[0041] The above embodiments are only used to explain the technical solutions of the present invention rather than to limit the same. Although the above embodiments specifically describe the present invention, relevant technical personnel should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications and equivalent replacements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A traction centrifugal device, characterized in that: include: A shell, wherein a rotatable central shaft is disposed in its inner cavity, at least one centrifugal unit for storing a solution is disposed on the top of the central shaft, and a brake is disposed between the top of the central shaft and the shell; A first traction rope, one end of which is arranged on the middle part of the central axis, and the other end of which extends tangentially to the central axis and is arranged on the output shaft of a first swing motor, and the first swing motor is arranged on the inner side wall of the housing; A second traction rope, one end of which is arranged on the middle part of the central axis and is located between the first traction rope and the bottom end of the central axis, and the other end of which extends tangentially to the central axis and is arranged on the output shaft of the second swing motor, the first traction rope and the second traction rope are wound around the central axis one clockwise and the other counterclockwise, and the second swing motor is arranged on the inner side wall of the housing at an angle of 180 degrees to the first swing motor; A first swing rod is arranged between the first swing motor and the first traction rope, and the first swing rod is arranged on the output shaft of the first swing motor; A second swing rod is arranged between the second swing motor and the second traction rope, and the second swing rod is arranged on the output shaft of the second swing motor.

2. The traction centrifugal device according to claim 1, characterized in that: The centrifugal unit comprises a rotor fixing block sleeved and connected to the central axis, a test tube sleeve arranged around the fixing block, and a centrifugal tube sleeved in the test tube sleeve, and a plurality of the test tube sleeves and the centrifugal tubes are provided.

3. The traction centrifugal device according to claim 2, characterized in that: There are eight test tube sleeves, and the eight test tube sleeves are arranged on the rotor fixing block at equal intervals.

4. The traction centrifugal device according to claim 2, characterized in that: An angle of orthographic projection is provided between the central axis of the test tube sleeve and the central axis of the central shaft, and the central axis of the test tube sleeve and the central axis of the central shaft do not intersect each other.

5. The traction centrifugal device according to claim 4, characterized in that: The angle is between 0° and 15°.

6. The traction centrifugal device according to claim 1, characterized in that: Two centrifugal units are provided, and the two centrifugal units are sequentially sleeved on the central axis from top to bottom.

7. The traction centrifugal device according to claim 1, characterized in that: The braking member is a brake or a damper.

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