CN113231207A

CN113231207A - Traction centrifugal device

Info

Publication number: CN113231207A
Application number: CN202110466634.6A
Authority: CN
Inventors: 张荣宝; 曹进; 孙姗姗; 董喆
Original assignee: Xiamen Haihongxing Instrument Co ltd
Current assignee: Xiamen Haihongxing Instrument Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-08-10

Abstract

The invention provides a traction centrifugal device which comprises a shell, a first traction rope and a second traction rope, wherein the shell is provided with a rotatable central shaft, the central shaft is provided with at least one centrifugal unit, and a braking part is arranged between the central shaft and the shell. A first swing motor is arranged at the other end of the first traction rope, and a second swing motor is arranged at the other end of the second traction rope. The solution to be subjected to centrifugal separation is filled into the centrifugal unit, the first swing motor is started to drive the first traction rope to pull the central shaft to rotate, the second traction rope on the second swing motor is wound on the central shaft at the moment, and resistance is generated to decelerate the central shaft. Then the second swing motor pulls the second traction rope to drive the central shaft to rotate, and the first traction rope plays a role in resistance. Because first haulage rope and second haulage rope are the relation of 180 degrees angles, utilize the alternating to stimulate the haulage rope repeatedly to drive the center pin rotatory, reach the effect to solution centrifugal separation.

Description

Traction centrifugal device

Technical Field

The invention relates to the field of experimental equipment, in particular to a traction centrifugal device.

Background

The centrifuges used in the current pharmaceutical and food inspection are suitable for the centrifugal separation of large-volume samples, while the electric driving centrifugation adopted for the centrifugation of small-volume samples has lower revolution, so that certain obstacles exist in the simple field analysis and the effective centrifugation of a small amount of sample solution.

The prior art has the following problems: firstly, the rotating speed of the field centrifugal equipment is insufficient; secondly, the centrifugal separation of a small amount of sample solution or a trace amount of sample solution is not suitable; thirdly, the centrifugal effect is poor. The device for traction centrifugation utilizes the swinging traction to realize the effect of high-efficiency separation centrifugation, carries out the centrifugal separation of the sample solution, and can be used for overcoming the defects of the prior small-sized rapid centrifugal equipment.

Disclosure of Invention

The invention aims to provide a traction centrifugal device, which aims to solve the problems that the existing centrifugal machine has poor centrifugal effect on simple field analysis and a small amount of sample solution.

In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows: a traction centrifuge comprising:

the device comprises a shell, a rotating central shaft is arranged in an inner cavity of the shell, at least one centrifugal unit for storing solution is arranged at the top of the central shaft, and a braking piece is arranged between the top end of the central shaft and the shell;

one end of the first traction rope is arranged in the middle of the central shaft, the first traction rope is wound on the central shaft from bottom to top clockwise, the other end of the first traction rope extends in a tangent state with the central shaft and is arranged on an output shaft of a first swing motor, and the first swing motor is arranged on the inner side wall of the shell;

and one end of the second traction rope is arranged on the middle part of the central shaft, the second traction rope is positioned between the first traction rope and the bottom end of the central shaft and is wound clockwise from top to bottom on the central shaft, the other end of the second traction rope and the central shaft extend in a tangent state and are arranged on an output shaft of a second swing motor, and the second swing motor and the first swing motor are arranged on the inner side wall of the shell at an angle of 180 degrees. Preferably, a first swing rod is arranged between the first swing motor and the first traction rope, and the first swing rod is arranged on an output shaft of the first swing motor.

Preferably, a second swing link is arranged between the second swing motor and the second traction rope, and the second swing link is arranged on an output shaft of the second swing motor.

Preferably, the centrifugation unit include with the center pin cover is established the rotor fixed block of connecting, is encircleed and is set up test tube sleeve and cover on the fixed block are located centrifuging tube in the test tube sleeve, test tube sleeve with the centrifuging tube is provided with a plurality ofly.

Preferably, the test tube sleeve is provided with eight, and eight the equidistant setting of test tube sleeve is in on the rotor fixed block.

Preferably, an included angle of orthographic projection is arranged 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 are arranged in a non-intersecting manner.

Preferably, the included angle is between 0 and 15 degrees.

Preferably, the centrifugal unit is provided with two, and two centrifugal unit from top to bottom is located in proper order the cover is in on the center pin.

Preferably, the braking member is a brake or a damper.

Compared with the prior art, the invention has the following beneficial effects:

1. the solution that will carry out centrifugal separation is packed into centrifugal unit in, when separating, drives first haulage rope pulling center pin through first swing motor and rotates, and the second haulage rope on the second swing motor this moment is then by the automatic winding of rotation of center pin on the center pin, and the coiling through the second haulage rope can produce corresponding resistance. In a similar way, when the second swing motor pulls the second traction rope to drive the central shaft to rotate, the first traction rope plays a role in resistance. Because first haulage rope and second haulage rope are the relation at 180 degrees angles, utilize the alternating to stimulate the haulage rope repeatedly for the center pin can carry out the unilateral and continue rotatory, and then reaches the effect to solution centrifugal separation.

2. The swing motor can increase the radian of the tail end swing by utilizing the swing rod, and further can improve the length of pulling the traction rope, so that the rotating speed of the central shaft is improved. Therefore, the swing rods with different lengths can be set according to requirements, and the rotation speed of the central shaft is controlled.

3. Two centrifugal units can be arranged and arranged on the central shaft in an upper-lower layer mode. And all have a plurality of test tube sleeve in every centrifugal unit to establish on the center pin through the rotor fixed block cover, and need carry out centrifugal sample solution, can pack into in the centrifuge tube, then with centrifuge tube put into test tube sleeve can. In order to improve the centrifugal effect of sample solution, be provided with the contained angle between test tube sleeve and the center pin, and test tube sleeve's the central axis and the central axis non-intersect of center pin to produce powerful centrifugal force when rotatory, and under the effect of centrifugal force, the tiny particle of suspension subsides with the certain speed in the sample solution, thereby makes sample solution centrifuge in the centrifuging tube.

Drawings

FIG. 1 is a cross-sectional view of a pulling centrifuge apparatus according to an embodiment;

FIG. 2 is a partial view of a pulling centrifuge in accordance with an embodiment;

FIG. 3 is a schematic view of a pulling centrifuge apparatus according to an embodiment;

reference numerals:

10. a housing; 101. a central shaft; 102. a centrifugal unit; 103. a stopper;

1021. a rotor fixing block; 1022. a test tube cartridge; 1023. centrifuging the tube;

20. a first pull cord; 201. a first swing link;

30. a second pull cord; 301. a second swing link;

40. a first swing motor; 50. a second swing motor.

Detailed Description

The invention proposes a new solution, which is described in detail below with reference to the accompanying drawings for a clearer representation.

Referring to fig. 1 to 3, the present embodiment provides a centrifugal device, which includes a housing 10, a first pulling rope 20 and a second pulling rope 30. The inner cavity of the shell 10 is provided with a rotatable central shaft 101, the top of the central shaft 101 is provided with at least one centrifugal unit 102 for storing solution, and a braking member 103 is arranged between the top end of the central shaft 101 and the shell 10, and the braking member 103 can be a brake or a damper. One end of the first pulling rope 20 is disposed on the middle portion of the central shaft 101, and it is clockwise wound on the central shaft 101 from bottom to top, 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 pulling rope 30 is disposed on the middle portion of the central shaft 101, and it is located between the bottom ends of the first pulling rope 20 and the central shaft 101 and is wound clockwise from top to bottom on the central shaft 101, and its other end extends tangentially with the central shaft 101 and is disposed on the output shaft of the second swing motor 50, and the second swing motor 50 and the first swing motor 40 are disposed on the inner side wall of the housing 10 at an angle of 180 degrees. The first pulling rope 20 and the second pulling rope 30 may be belts, and the belts having good torsion and toughness may provide a large centrifugal force after being tightly wound, thereby driving the central shaft 101 to rotate.

In the embodiment, the solution of the medicine or food can be subjected to centrifugal operation, so that the centrifugal effect of small dosage and high efficiency is met. It should be noted that the first swing motor 40 and the second swing motor 50 swing synchronously and in the same direction, and the first pulling rope and the second pulling rope form an angle of 180 degrees, and the pulling rope is pulled repeatedly in an alternating manner to drive the central shaft to rotate. If pulling the pulling rope is a process of driving the central shaft 101 to rotate, the pulling rope is changed from winding to separating from the central shaft 101; then the pulling rope is rewound onto the central shaft 101 when swinging in the opposite direction. Since the first traction rope 20 and the second traction rope 30 are wound on the central shaft 101 clockwise and counterclockwise, the constant swing traction provides the power for rotating the central shaft 101.

Specifically, the solution to be centrifugally separated is put into the centrifugal unit 102, and when the solution is separated, the first swing motor 40 drives the first pulling rope 20 to pull the central shaft 101 to rotate, and at this time, the second pulling rope 30 on the second swing motor 50 is automatically wound on the central shaft 101 by the rotation of the central shaft 101, and corresponding resistance is generated by the winding of the second pulling rope 30. Because two haulage ropes are clockwise winding, first haulage rope 20 is on center pin 101 by lower supreme clockwise winding, second haulage rope 30 is on center pin 101 from top to bottom clockwise winding, the two exit position is 180 degrees opposite according to the radial relative tangent plane of center pin 101, by outside tensile when first haulage rope 20, make center pin 101 do clockwise rotation, the pulling point inward movement of second haulage rope 30, at this moment, second haulage rope 30 is because the lax state, can be because of the frictional force with center pin 101 and the tension of haulage rope itself, by the drive of center pin 101, become on the anticlockwise winding axle 101 that returns, so relapse, realize the rotation of center pin 101, and then reach the effect to solution centrifugal separation. When the centrifugation of the solution is completed, the spindle is braked by the stopper, the first swing motor 40 and the second swing motor 50 are turned off, the housing 10 is opened, the centrifugation unit 102 is taken out, and a new solution is put in for separation.

In this embodiment, the top of the housing has a protective cover, and the bottom of the housing is a cylinder, a closed cavity is formed by the cooperation of the protective cover and the cylinder, and the centrifugal unit 102 is convenient to take or place due to the arrangement of the protective cover. Simultaneously, improve the security of drawing centrifugal device and using through the protection casing.

In this embodiment, a first swing link 201 is disposed between the first swing motor 40 and the first traction rope 20, and the first swing link 201 is disposed on an output shaft of the first swing motor 40. A second swing link 301 is arranged between the second swing motor 50 and the second traction rope 30, and the second swing link 301 is arranged on an output shaft of the second swing motor 50. The swing motor can increase the radian of the tail end swing by utilizing the swing rod, and further can improve the length of pulling the traction rope, so that the rotating speed of the central shaft 101 is improved. Therefore, the swing rods with different lengths can be set according to requirements, and the rotation speed of the control central shaft 101 is further achieved.

In this embodiment, two centrifugal units 102 are provided, and the two centrifugal units 102 are sequentially sleeved on the central shaft 101 from top to bottom. Centrifugal unit 102 includes establishes the rotor fixed block 1021 of being connected, encircles the test tube sleeve 1022 that sets up on the fixed block and the centrifuging tube 1023 that the cover was located in test tube sleeve 1022 with center pin 101 cover, and test tube sleeve 1022 and centrifuging tube 1023 are provided with a plurality ofly. The test tube sleeves 1022 are provided with eight, and eight the test tube sleeves 1022 are equidistantly disposed on the rotor fixing block 1021. By providing multiple layers, each layer being provided with a plurality of cuvette sleeves 1022, the sample throughput can be increased.

Specifically, the sample solution to be centrifuged is loaded into centrifuge tube 1023, and then centrifuge tube 1023 is placed into test tube sleeve 1022. When center pin 101 rotates, through the connection of rotor fixed block 1021 for center pin 101 drives whole centrifugal unit 102 and carries out synchronous rotation, then carries out the centrifugation to the sample solution in centrifuging tube 1023, and can centrifuge a plurality of the same and/or different sample solutions at every turn, improves centrifugal efficiency.

In this embodiment, an included angle of an orthographic projection is provided between the central axis of the test tube sleeve 1022 and the central axis of the central shaft 101, and the central axis of the test tube sleeve 1022 and the central axis of the central shaft 101 are not intersected. The centrifugal force is directed to a linear velocity that is greater as it is farther from the central axis 101 during rotation, and in order to achieve that fine particles suspended in the sample solution are settled at a constant velocity during centrifugation. Therefore, set up corresponding contained angle, through the experimental analysis when designing, have the contained angle between test tube sleeve 1022 and center pin 101, and when the central axis of test tube sleeve 1022 and the central axis non-intersect of center pin 101 set up, can improve the effect of centrifugation and subside to guarantee its efficiency.

Specifically, the included angle is designed to be between 0 ° and 15 ° in this embodiment. A smaller tilt angle allows more sample solution to be contained in the centrifuge tube 1023 and the settling of suspended micro-particles at the bottom of the centrifuge tube 1023 can be achieved. Specifically, produce powerful centrifugal force when rotatory to under the effect of centrifugal force, the tiny particle of suspension subsides with certain speed in the sample solution, thereby makes sample solution obtain the centrifugation in the centrifuging tube 1023, and then reaches the centrifugal effect of improvement sample solution.

For both the first swing motor 40 and the second swing motor 50 to be swing motors, the swing frequency of the swing motors can be adjusted to control the frequency of pulling the pull rope, thereby changing the speed of rotation of the central shaft 101.

Specifically, when the centrifugal solution to be centrifuged in the centrifugal tube is subjected to low-speed centrifugal operation, the two traction ropes are wound on the central shaft 101 in the forward and reverse directions and connected with the swing rod, and then the two swing motors are set to swing at low speed. And then add particle suspension with among the centrifugal unit 102 centrifuging tube after, and then fix rotor fixed block 1021 on center pin 101 is rotatory, starts two swing motors simultaneously and draws, drives center pin 101 and carries out the centrifugation. Under the action of centrifugal force, the micro particles in the particle suspension are centrifugally settled at a lower speed, so that the sample solution can be separated and centrifuged. Similarly, when the high-speed separation is performed, the two swing motors can swing at a high speed. The flexible control effect of the traction centrifugal device is improved.

Although the present invention has been described in detail in the foregoing embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention.

Claims

1. A traction centrifuge, comprising:

and one end of the second traction rope is arranged on the middle part of the central shaft, the second traction rope is positioned between the first traction rope and the bottom end of the central shaft and is wound clockwise from top to bottom on the central shaft, the other end of the second traction rope and the central shaft extend in a tangent state and are arranged on an output shaft of a second swing motor, and the second swing motor and the first swing motor are arranged on the inner side wall of the shell at an angle of 180 degrees.

2. The pulling centrifuge of claim 1, wherein: a first swing rod is arranged between the first swing motor and the first traction rope, and the first swing rod is arranged on an output shaft of the first swing motor.

3. The pulling centrifuge of claim 1, wherein: and a second swing rod is arranged between the second swing motor and the second traction rope, and the second swing rod is arranged on an output shaft of the second swing motor.

4. The pulling centrifuge of claim 1, wherein: the centrifugation unit include with the center pin cover is established the rotor fixed block of connecting, is encircleed and is set up test tube sleeve and cover on the fixed block are located centrifuging tube in the test tube sleeve, test tube sleeve with the centrifuging tube is provided with a plurality ofly.

5. The pulling centrifuge of claim 4, wherein: the test tube sleeve is provided with eight, and eight the equidistant setting of test tube sleeve is in on the rotor fixed block.

6. The pulling centrifuge of claim 4, wherein: the central axis of the test tube sleeve and the central axis of the central shaft are provided with an included angle of orthographic projection, and the central axis of the test tube sleeve and the central axis of the central shaft are arranged in a non-intersecting manner.

7. The pulling centrifuge of claim 6, wherein: the included angle is 0-15 degrees.

8. The pulling centrifuge of claim 1, wherein: the centrifugal unit is provided with two, and two centrifugal unit from top to bottom overlaps in proper order and locates on the center pin.

9. The pulling centrifuge of claim 1, wherein: the braking part is a brake or a damper.