A medical high-speed tabletop centrifuge

Abstract

The present invention relates to the field of medical centrifuges, and particularly to a high-speed medical tabletop centrifuge. Each time when encountering centrifuge tubes of different sizes, it is necessary to replace the centrifugal rotor, which greatly reduces the work efficiency of the staff. To solve the above technical problems, the present invention provides such a high-speed medical tabletop centrifuge, including a main box body. A power mechanism is provided at the bottom of the main box body. The power mechanism includes a motor. The motor is fixedly installed at the bottom of the main box body. The output end of the motor is fixedly connected with an output shaft. A plurality of wedges are fixedly connected to the outer side of the output shaft. A centrifugal mechanism is provided on the outer side of the output shaft. The centrifugal mechanism includes a centrifugal rotor. By setting the centrifugal mechanism, when rotating in a circle, through the cooperation of the sliding seat and the limiting rod, the distance between the curved panel and the mounting hole can be adjusted, so as to clamp centrifuge tubes of different sizes.

Description

Technical Field

[0001] The present invention relates to the field of medical centrifuges, and particularly to a high-speed medical tabletop centrifuge. Background Art

[0002] The basic principle of a high-speed medical tabletop centrifuge is to utilize the powerful centrifugal force generated by the high-speed rotation of the rotor to force these particles to overcome diffusion and produce sedimentation motion, thereby realizing the separation of substances with different sedimentation coefficients and buoyancy densities in the sample. High-speed medical tabletop centrifuges have a wide range of applications in the biomedical field, such as cell biology research, protein research, virus and microorganism research, etc. To meet the separation requirements of different samples, high-speed medical tabletop centrifuges are usually equipped with various types of rotors, which have different capacities to adapt to the separation requirements of centrifugal test tubes of different sizes. Therefore, every time a centrifugal test tube of a different size is encountered, the centrifugal rotor needs to be replaced, which greatly reduces the work efficiency of the staff. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-speed medical tabletop centrifuge to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A high-speed medical tabletop centrifuge, including a main box body. A power mechanism is provided at the bottom of the main box body. The power mechanism includes a motor, the motor is fixedly installed at the bottom of the main box body, an output shaft is fixedly connected to the output end of the motor, a plurality of wedges are fixedly connected to the outer side of the output shaft, a centrifugal mechanism is provided on the outer side of the output shaft. The centrifugal mechanism includes a centrifugal rotor, a first through hole is opened in the middle of the centrifugal rotor, the output shaft is slidably connected in the first through hole opened in the middle of the centrifugal rotor, a positioning ring is fixedly connected to the lower side of the centrifugal rotor, a second through hole is opened in the middle of the positioning ring, the output shaft is slidably connected in the second through hole opened in the middle of the positioning ring, a plurality of first chutes are opened at the lower end of the positioning ring, the wedges are slidably limited in the first chutes opened at the lower end of the positioning ring, a threaded ring is fixedly connected to the middle of the upper end of the centrifugal rotor, a fixed ring is fixedly connected to the lower side inside the threaded ring, a threaded rotating rod is rotatably connected inside the fixed ring, the upper and lower sides of the fixed ring are rotatably connected with a first limiting ring, the first limiting ring is fixedly connected to the threaded rotating rod, threads are provided on the outer side of the lower end of the threaded rotating rod, a threaded hole is opened at the upper end of the output shaft, and the threaded rotating rod is threadedly connected to the output shaft through the threads.

[0005] Preferably, a plurality of mounting holes are symmetrically formed inside the centrifugal rotor body. A plurality of second chutes are formed inside the centrifugal rotor body. Third through holes are formed outside the second chutes inside the centrifugal rotor body. The second chutes formed inside the centrifugal rotor body communicate with the mounting holes through the third through holes. A rotating ring is rotatably connected to the upper end inside the second chute formed inside the centrifugal rotor body. Threads are formed on the outer side of the lower end of the rotating ring. A sliding seat is provided on the outer side of the lower end of the rotating ring. The sliding seat is slidably connected inside the second chute formed inside the centrifugal rotor body. Threads are formed on the inner side of the upper end of the sliding seat. The sliding seat is threadedly connected to the rotating ring through the threads. A plurality of third chutes are formed on the outer side of the lower end of the sliding seat. A limiting rod is slidably connected inside the third chute formed at the lower end of the sliding seat. The limiting rod is slidably connected inside the third through hole formed outside the third chute of the centrifugal rotor body. The other end of the limiting rod is fixedly connected to a curved panel.

[0006] Preferably, a sealing mechanism is provided on the upper side of the centrifugal rotor body. The sealing mechanism includes a sealing cover. A fourth through hole is formed in the middle of the sealing cover. A bolt is rotatably connected inside the fourth through hole formed in the middle of the sealing cover. Two fourth chutes are formed on the outer side of the bolt. A limiting block is slidably connected inside the fourth chute formed on the outer side of the bolt. The limiting block is fixedly connected to the sealing cover. A threaded hole is formed inside the lower end of the bolt. The bolt is threadedly connected to the threaded ring through the threaded hole. A second limiting ring is fixedly connected to the outer side of the lower end of the bolt. The upper end of the second limiting ring is rotatably connected to the sealing cover.

[0007] Preferably, a plurality of clamping mechanisms are symmetrically provided on the upper side of the sealing cover. The clamping mechanism includes a fixed block. One side of the fixed block is fixedly connected to the sealing cover. A fifth chute is formed inside the fixed block. A fifth through hole communicating with the fifth chute is formed on the other side of the fixed block. A sliding rod is slidably connected inside the fifth through hole communicating with the fifth chute formed on the other side of the fixed block. A button is fixedly connected to the end of the sliding rod. A sleeve is sleeved on the outer side of the sliding rod. The sleeve is fixedly connected to the sliding rod. A first spring is fixedly connected to the side of the sleeve close to the bolt. The first spring is sleeved on the outer side of the sliding rod. The other end of the first spring is fixedly connected to a fixing plate. A sixth through hole is formed inside the fixing plate. The sliding rod is slidably connected inside the sixth through hole formed inside the fixing plate. The fixing plate is fixedly connected inside the fixed block. A limiting slider is fixedly connected to the end of the sliding rod close to the bolt. The limiting slider is slidably connected inside the fifth chute formed inside the fixed block. Two rows of first limiting teeth are provided on the side of the limiting slider close to the fixing plate.

[0008] Preferably, seventh through holes communicating with a fifth chute inside the fixing block are formed in the upper and lower sides of the fixing block. Limit sliding rods are slidably connected in the seventh through holes on the upper and lower sides of the fixing block. A notch is formed at the upper end of the limit sliding rod. The sliding rod is slidably connected in the notch formed at the upper end of the limit sliding rod. Second limit teeth meshing with first limit teeth are fixedly connected to the limit sliding rod. An arc-shaped notch is formed at the lower end of the limit sliding rod. A plurality of limit protrusions are arranged in the arc-shaped notch formed at the lower end of the limit sliding rod. The limit sliding rod abuts against the rotating ring through the limit protrusions. A plurality of eighth through holes are formed inside the sealing cover. The limit sliding rod is slidably connected in the eighth through holes formed inside the sealing cover.

[0009] Preferably, sixth chutes communicating with a fifth through hole inside the fixing block are formed on both sides inside the fixing block. Support plates are fixedly connected to both side surfaces of the limit sliding rod. A second spring is fixedly connected to the upper end of the support plate. The other end of the second spring is fixedly connected to the fixing block. The support plate is slidably connected in the sixth chute.

[0010] Preferably, a limit mechanism is arranged at the upper end of the clamping mechanism. The limit mechanism includes a fixing shell fixedly connected to the upper end of the fixing block. A seventh chute is formed on the lower side of the fixing shell. A third spring is fixedly connected in the seventh chute formed on the lower side of the fixing shell. The other end of the third spring is fixedly connected to a sliding block. The sliding block is slidably connected in the seventh chute formed on the lower side of the fixing shell. A push rod is fixedly connected inside the sliding block. Ninth through holes communicating with the seventh chute on the lower side of the fixing shell are formed on both sides of the fixing shell. The push rod is slidably connected in the ninth through hole.

[0011] Preferably, a cover body is rotatably connected to one side of the main box body through a rotating shaft. An iron block is fixedly connected to the front side of the cover body. An electromagnetic block is fixedly connected to the front side of the main box body.

[0012] Preferably, an operation screen is arranged on the front side of the main box body.

[0013] Preferably, a centrifuge tube is arranged inside the mounting hole.

[0014] Beneficial effects

[0015] 1. The centrifugal mechanism provided by the present invention can adjust the distance between the curved panel and the mounting hole through the cooperation of the sliding seat and the limit rod when the rotating ring rotates, so as to clamp centrifuge tubes of different sizes, avoiding the trouble of frequently replacing the centrifugal rotor when clamping centrifuge tubes of different specifications. At the same time, the curved panel can clamp the centrifuge tube, avoiding the instability of the centrifuge tube during centrifugal rotation and affecting the centrifugal effect, thereby improving the use convenience of the medical high-speed tabletop centrifuge.

[0016] 2. Through the cooperation of the clamping mechanism and the limiting mechanism, the rotation circle can be limited and clamped, avoiding the rotation of the rotation circle due to too high rotation speed during centrifugal rotation, increasing the clamping force of the curved panel on the centrifugal test tube, ensuring the accuracy of the medical high-speed tabletop centrifuge. At the same time, the division of labor operation of the clamping mechanism and the limiting mechanism reduces the working difficulty. Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a cross-sectional view of the main box body of the present invention;

[0019] Figure 3 It is a schematic diagram of the overall structure of the centrifugal mechanism of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the sliding seat of the present invention;

[0021] Figure 5 It is a cross-sectional view of the centrifugal rotor of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the sealing mechanism of the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0024] Figure 8 It is a schematic diagram of the structure of the limiting slide bar of the present invention;

[0025] Figure 9 It is a schematic diagram of the structure of the limiting mechanism of the present invention.

[0026] The reference signs in the drawings are: 1. Main box body; 101. Cover body; 102. Electromagnetic block; 103. Iron block; 2. Power mechanism; 201. Motor; 202. Output shaft; 203. Wedge block; 3. Centrifugal mechanism; 301. Centrifugal rotor; 302. Positioning ring; 303. Threaded ring; 304. Fixed ring; 305. Threaded rotating rod; 306. Sliding seat; 307. Limiting rod; 308. Curved panel; 309. Rotation circle; 310. Installation hole; 4. Sealing mechanism; 401. Sealing cover; 402. Bolt; 403. Limiting block; 5. Clamping mechanism; 501. Fixed block; 502. Sliding rod; 503. Sleeve; 504. Spring 1; 505. Fixed plate; 506. Limiting slider; 507. Limiting slide bar; 508. Spring 2; 6. Limiting mechanism; 601. Fixed shell; 602. Spring 3; 603. Sliding block; 604. Push rod; 7. Centrifugal test tube; 8. Operation screen. Detailed Description of the Invention

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] A medical high-speed tabletop centrifuge, as Figures 1 - 5 shown, includes a main box body 1. An operation screen 8 for operating equipment is provided on the front side of the main box body 1. A power mechanism 2 for providing centrifugal rotation is provided at the bottom of the main box body 1. The power mechanism 2 includes a motor 201. The motor 201 is fixedly installed at the bottom of the main box body 1. The output end of the motor 201 is fixedly connected with an output shaft 202. Four wedges 203 are fixedly connected to the outer side of the output shaft 202. A centrifugal mechanism 3 for installing a centrifuge tube 7 is provided on the outer side of the output shaft 202. The centrifugal mechanism 3 includes a centrifugal rotor 301. A first through hole is opened in the middle of the centrifugal rotor 301. The output shaft 202 is slidably connected in the first through hole opened in the middle of the centrifugal rotor 301. A positioning ring 302 is fixedly connected to the lower side of the centrifugal rotor 301. A second through hole is opened in the middle of the positioning ring 302. The output shaft 202 is slidably connected in the second through hole opened in the middle of the positioning ring 302. Four first chutes are opened at the lower end of the positioning ring 302. The wedges 203 are slidably limited in the first chutes opened at the lower end of the positioning ring 302. The output shaft 202 drives the centrifugal rotor 301 to perform centrifugal rotation through the cooperation of the wedges 203 and the positioning ring 302. A threaded ring 303 is fixedly connected to the middle of the upper end of the centrifugal rotor 301. Threads are provided on the outer side of the threaded ring 303. A fixing ring 304 is fixedly connected to the lower side inside the threaded ring 303. A threaded rotating rod 305 is rotatably connected inside the fixing ring 304. First limiting rings are rotatably connected to the upper and lower sides of the fixing ring 304. The first limiting rings are fixedly connected to the threaded rotating rod 305. Through the first limiting rings on both sides of the fixing ring 304, the threaded rotating rod 305 can be rotatably limited inside the fixing ring 304. Threads are provided on the outer side of the lower end of the threaded rotating rod 305. A threaded hole is opened at the upper end of the output shaft 202. The threaded rotating rod 305 is threadedly connected to the output shaft 202 through the threads. The threaded rotating rod 305 can drive the centrifugal rotor 301 to be fixedly installed on the outer side of the output shaft 202 through the threads.

[0029] As Figures 3 - 5As shown in the figure, eight mounting holes 310 for mounting the centrifuge test tubes 7 are symmetrically arranged inside the centrifugal rotor 301. The centrifuge test tubes 7 are arranged inside the mounting holes 310. Multiple second chutes that cooperate with the sliding seat 306 and the rotating ring 309 are arranged inside the centrifugal rotor 301. The second chutes are annular chutes. Eight third through holes are arranged outside the second chutes arranged inside the centrifugal rotor 301. The second chutes arranged inside the centrifugal rotor 301 communicate with the mounting holes 310 through the third through holes. A rotating ring 309 is rotatably connected to the upper end inside the second chutes arranged inside the centrifugal rotor 301. A notch for increasing friction is arranged on the outer side of the upper end of the rotating ring 309. Threads are arranged on the outer side of the lower end of the rotating ring 309. A sliding seat 306 is arranged on the outer side of the lower end of the rotating ring 309. The sliding seat 306 is slidably connected inside the second chutes arranged inside the centrifugal rotor 301. Threads are arranged on the inner side of the upper end of the sliding seat 306. The sliding seat 306 is threadedly connected to the rotating ring 309 through the threads. The rotating ring 309 can drive the sliding seat 306 to slide up and down through the threads. Eight third chutes are arranged on the outer side of the lower end of the sliding seat 306. A limiting rod 307 is slidably connected inside the third chutes arranged at the lower end of the sliding seat 306. A sliding ball is arranged at the inner end of the limiting rod 307. The sliding ball is stuck inside the third chutes arranged on the outer side of the lower end of the sliding seat 306. The limiting rod 307 is slidably connected inside the third through holes arranged outside the third chutes of the centrifugal rotor 301. The other end of the limiting rod 307 is fixedly connected to a curved panel 308. Through the cooperation of the third chutes of the sliding seat 306 and the sliding ball, the limiting rod 307 is driven to move up and down along the third through holes arranged in the centrifugal rotor 301. Further, the limiting rod 307 drives the curved panel 308 to clamp and loosen the centrifuge test tubes 7.

[0030] As Figure 3 , Figure 6 , Figure 7 As shown in the figure, a sealing mechanism 4 for sealing the centrifugal rotor 301 is arranged on the upper side of the centrifugal rotor 301. The sealing mechanism 4 includes a sealing cover 401. A fourth through hole is arranged in the middle of the sealing cover 401. A bolt 402 is rotatably connected inside the fourth through hole arranged in the middle of the sealing cover 401. A fourth chute is arranged on the outer side of the bolt 402. The fourth chute is an annular chute. Two limiting blocks 403 are slidably connected inside the fourth chute arranged on the outer side of the bolt 402. The limiting blocks 403 are symmetrically arranged on the outer side of the bolt 402. The limiting blocks 403 are fixedly connected to the sealing cover 401. A threaded hole is arranged inside the lower end of the bolt 402. The bolt 402 is threadedly connected to the threaded ring 303 through the threaded hole. The bolt 402 drives the sealing cover 401 to be slidably mounted on the upper side of the threaded ring 303 through the threads. A second limiting ring is fixedly connected to the outer side of the lower end of the bolt 402. The upper end of the second limiting ring is rotatably connected to the sealing cover 401. Through the cooperation of the second limiting ring and the limiting blocks 403, the sealing cover 401 is rotationally limited on the outer side of the bolt 402.

[0031] As Figure 3 , Figure 7 ,Figure 8 As shown in the figure, a plurality of clamping mechanisms 5 for clamping and limiting the rotating ring 309 are symmetrically arranged on the upper side of the sealing cover 401. The clamping mechanism 5 includes a fixed block 501. One side of the fixed block 501 is fixedly connected to the sealing cover 401. A fifth chute is opened inside the fixed block 501. A fifth through hole communicating with the fifth chute is opened on the other side of the fixed block 501. A sliding rod 502 is slidably connected in the fifth through hole opened on the other side of the fixed block 501 and communicating with the fifth chute. A button is fixedly connected to the end of the sliding rod 502. A collar 503 is sleeved on the outer side of the sliding rod 502. The collar 503 is fixedly connected to the sliding rod 502. A first spring 504 is fixedly connected to the side of the collar 503 close to the bolt 402. The first spring 504 is sleeved on the outer side of the sliding rod 502. The other end of the first spring 504 is fixedly connected to a fixing plate 505. A sixth through hole is opened inside the fixing plate 505. The sliding rod 502 is slidably connected in the sixth through hole opened inside the fixing plate 505. The fixing plate 505 is fixedly connected inside the fixed block 501. A limiting slider 506 is fixedly connected to one end of the sliding rod 502 close to the bolt 402. The limiting slider 506 is slidably connected in the fifth chute opened inside the fixed block 501. Two rows of first limiting teeth are arranged on the side of the limiting slider 506 close to the fixing plate 505.

[0032] As Figure 7 、 Figure 8 shown in the figure, seventh through holes communicating with the fifth chute inside the fixed block 501 are opened on the upper and lower sides of the fixed block 501. A limiting slide bar 507 is slidably connected in the seventh through holes on the upper and lower sides of the fixed block 501. A rectangular notch is opened at the upper end of the limiting slide bar 507. The sliding rod 502 is slidably connected in the notch opened at the upper end of the limiting slide bar 507. A second limiting tooth meshing with the first limiting tooth is fixedly connected to the limiting slide bar 507. An arc-shaped notch is opened at the lower end of the limiting slide bar 507. A plurality of limiting protrusions are arranged in the arc-shaped notch opened at the lower end of the limiting slide bar 507. The limiting slide bar 507 abuts against the rotating ring 309 through the limiting protrusions. The limiting slide bar 507 limits the rotating ring 309 through the limiting protrusions. A plurality of eighth through holes are opened inside the sealing cover 401. The limiting slide bar 507 is slidably connected in the eighth through holes opened inside the sealing cover 401. The first spring 504 always releases elastic potential energy to push the sliding rod 502 outward through the fixing plate 505. The sliding rod 502 limits the limiting slide bar 507 through the first limiting teeth on the side of the limiting slider 506 to prevent the limiting slide bar 507 from sliding up and down. When the sliding rod 502 is pushed inward by the button, the sliding rod 502 drives the first limiting teeth to disengage from the second limiting teeth on the side of the limiting slide bar 507 through the limiting slider 506. After the disengagement, the limiting slide bar 507 can move upward.

[0033] As Figure 7 、 Figure 8As shown, on both sides inside the fixed block 501, there are sixth chutes that communicate with the fifth through-hole inside the fixed block 501. The sixth chutes are rectangular chutes. On both sides of the limit slide bar 507, there are support plates fixedly connected. The support plates are rectangular plates. At the upper ends of the support plates, there are second springs 508 fixedly connected. The other ends of the second springs 508 are fixedly connected to the fixed block 501. The support plates are slidably connected inside the sixth chutes. The two second springs 508 release elastic potential energy, and through the support plates, they push the limit slide bar 507 downward. The limit slide bar 507 limits the rotation circle 309 through the limit protrusions at its lower end.

[0034] As Figures 7 - 9 As shown, at the upper end of the clamping mechanism 5, there is a limit mechanism 6 for limiting the sliding rod 502. The limit mechanism 6 includes a fixed shell 601. The fixed shell 601 is fixedly connected to the upper end of the fixed block 501. At the lower side of the fixed shell 601, there is a seventh chute. The seventh chute is a rectangular chute. Inside the seventh chute opened at the lower side of the fixed shell 601, there is a third spring 602 fixedly connected. The other end of the third spring 602 is fixedly connected to a sliding block 603. The sliding block 603 is slidably connected inside the seventh chute opened at the lower side of the fixed shell 601. Inside the sliding block 603, there is a push rod 604 fixedly connected. On both sides of the fixed shell 601, there are ninth through-holes that communicate with the seventh chute at the lower side of the fixed shell 601. The push rod 604 is slidably connected inside the ninth through-holes. The third spring 602 releases elastic potential energy to limit the sliding rod 502 through the sliding block 603. Pulling the push rod 604 drives the sliding block 603 to move upward, releasing the limit on the sliding rod 502.

[0035] As Figure 1 As shown, on one side of the main box body 1, there is a cover body 101 rotatably connected through a rotating shaft. On the front side of the cover body 101, there is an iron block 103 fixedly connected. On the front side of the main box body 1, there is an electromagnetic block 102 fixedly connected. Through the cooperative action of the electromagnetic block 102 and the iron block 103, the cover body 101 is tightly closed.

[0036] Working principle:

[0037] First, place the centrifuge tube 7 in the installation hole 310, and rotate the rotation circle 309 clockwise. The rotation circle 309 drives the sliding seat 306 to move upward through the thread. The sliding seat 306 pushes the limit rod 307 along the third through-hole opened inside the centrifugal rotating body 301 outward through the inclined surface of the second chute. The limit rod 307 clamps the centrifuge tube 7 through the curved panel 308.

[0038] Secondly, install the sealing cover 401. Push the sliding rod 502 inward. The sliding rod 502 compresses the first spring 504 through the ferrule 503. The sliding rod 502 drives the limit slider 506 to move toward the side close to the bolt 402. The first limit teeth on the side of the limit slider 506 lose the limit on the limit slide rod 507. At the same time, the button at the end of the limit slide rod 507 pushes the sliding block 603 upward through the inclined surface. The sliding block 603 drives the push rod 604 to move upward. The sliding block 603 compresses the third spring 602. When the button at the end of the limit slide rod 507 passes through the sliding block 603, the third spring 602 releases its elastic potential energy and pushes the sliding block 603 downward. The sliding block 603 limits the limit slide rod 507.

[0039] Then, place the bolt 402 on the upper side of the thread ring 303 and rotate the bolt 402 clockwise. The bolt 402 moves downward through the thread ring 303. The bolt 402 drives the sealing cover 401 to move downward through the limit block 403 to seal the centrifugal rotor 301. At the same time, the lower ends of the two limit slide rods 507 abut against the limit grooves on the side of the rotating ring 309 through the limit protrusions. The sealing cover 401 moves downward and drives the fixed block 501 to compress the second spring 508 downward. Continuously tighten the bolt 402 clockwise to seal the centrifugal rotor 301 through the sealing cover 401. After the sealing is completed, push the two push rods 604 upward in sequence. The push rods 604 compress the third spring 602 upward through the sliding blocks 603. The sliding blocks 603 lose the limit on the buttons at the ends of the sliding rods 502. The first spring 504 releases its elastic potential energy and pushes the sliding rod 502 outward through the ferrule 503. The sliding rod 502 drives the limit slider 506 to move away from the bolt 402. The limit slider 506 limits the limit slide rod 507 through the cooperation of the first limit teeth and the second limit teeth, preventing the limit slide rod 507 from moving upward with the centrifugal motion, and further ensuring the limit of the limit slide rod 507 on the rotating ring 309.

[0040] After the sealing cover 401 is installed, close the cover body 101. Secondly, control the electromagnet block 102 to be powered on through the operation screen 8. Through the cooperation of the electromagnet block 102 and the iron block 103, the cover body 101 is sealed. Then, start the motor 201 through the operation screen 8. The motor 201 drives the output shaft 202 to rotate clockwise. The output shaft 202 drives the positioning ring 302 to rotate clockwise through the wedge block 203. The positioning ring 302 drives the centrifugal rotor 301 to rotate clockwise. The centrifugal rotor 301 centrifuges the centrifuge tube 7 inside the mounting hole 310. After the centrifugation is completed, sequentially turn off the motor 201 and the electromagnet block 102 through the operation screen 8. Open the cover body 101. Then, rotate the bolt 402 counterclockwise. The bolt 402 moves upward through the thread ring 303. The bolt 402 drives the sealing cover 401 to move upward through the second limiting ring. The sealing cover 401 drives the fixing block 501 to move upward. During the upward movement of the fixing block 501, the spring two 508 releases elastic potential energy and pushes the limiting slide bar 507 downward, so that the limiting slide bar 507 is reset. After the sealing cover 401 is taken out, rotate the turning circle 309 counterclockwise. The turning circle 309 drives the sliding seat 306 to move downward through the thread. The sliding seat 306 pushes the limiting rod 307 to slide inward along the third through hole opened inside the centrifugal rotor 301 through the inclined plane of the second chute. The limiting rod 307 relaxes the centrifuge tube 7 through the curved panel 308. Further, take out the centrifuge tube 7.

[0041] When it is necessary to replace the centrifugal rotor 301, rotate the threaded rod 305 counterclockwise. The threaded rod 305 is screwed out upward from the upper end of the output shaft 202 through the thread. The threaded rod 305 drives the centrifugal rotor 301 and the positioning ring 302 to move upward through the first limiting ring, so that the first chute on the lower side of the positioning ring 302 is separated from the wedge block 203, and the centrifugal rotor 301 is taken out; then place the new centrifugal rotor 301 on the output shaft 202, rotate the threaded rod 305 clockwise. The threaded rod 305 is screwed into the upper end of the output shaft 202 through the thread. At the same time, adjust the angle of the centrifugal rotor 301, and snap the wedge block 203 into the first chute at the lower end of the positioning ring 302. Further screw in the threaded rod 305 to fix the centrifugal rotor 301 at the upper end of the output shaft 202.

[0042] The above embodiments only represent the preferred embodiments of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, improvements and substitutions can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A medical high-speed tabletop centrifuge, characterized in that, It includes a main box body. A power mechanism is provided at the bottom of the main box body. The power mechanism includes a motor. The motor is fixedly installed at the bottom of the main box body. The output end of the motor is fixedly connected with an output shaft. A plurality of wedges are fixedly connected to the outer side of the output shaft. A centrifugal mechanism is provided on the outer side of the output shaft. The centrifugal mechanism includes a centrifugal rotor. A first through hole is formed in the middle of the centrifugal rotor. The output shaft is slidably connected in the first through hole formed in the middle of the centrifugal rotor. A positioning ring is fixedly connected to the lower side of the centrifugal rotor. A second through hole is formed in the middle of the positioning ring. The output shaft is slidably connected in the second through hole formed in the middle of the positioning ring. A plurality of first chutes are formed at the lower end of the positioning ring. The wedges are slidably limited in the first chutes formed at the lower end of the positioning ring. A threaded ring is fixedly connected to the middle of the upper end of the centrifugal rotor. A fixed ring is fixedly connected to the lower side inside the threaded ring. A threaded rotating rod is rotatably connected inside the fixed ring. The upper and lower sides of the fixed ring are rotatably connected with a first limiting ring. The first limiting ring is fixedly connected with the threaded rotating rod. Threads are provided on the outer side of the lower end of the threaded rotating rod. A threaded hole is formed at the upper end of the output shaft. The threaded rotating rod is threadedly connected with the output shaft through the threads; A plurality of installation holes are symmetrically formed inside the centrifugal rotor. A plurality of second chutes are formed inside the centrifugal rotor. A third through hole is formed outside the second chutes inside the centrifugal rotor. The second chutes formed inside the centrifugal rotor communicate with the installation holes through the third through holes. A rotating ring is rotatably connected to the upper end inside the second chutes formed inside the centrifugal rotor. Threads are provided on the outer side of the lower end of the rotating ring. A sliding seat is provided on the outer side of the lower end of the rotating ring. The sliding seat is slidably connected in the second chutes formed inside the centrifugal rotor. Threads are provided on the inner side of the upper end of the sliding seat. The sliding seat is threadedly connected with the rotating ring through the threads. A plurality of third chutes are formed on the outer side of the lower end of the sliding seat. A limiting rod is slidably connected in the third chutes formed at the lower end of the sliding seat. The limiting rod is slidably connected in the third through holes formed outside the third chutes of the centrifugal rotor. The other end of the limiting rod is fixedly connected with a curved panel.

2. The medical high-speed tabletop centrifuge according to claim 1, characterized in that, A sealing mechanism is provided on the upper side of the centrifugal rotor. The sealing mechanism includes a sealing cover. A fourth through hole is formed in the middle of the sealing cover. A bolt is rotatably connected in the fourth through hole formed in the middle of the sealing cover. Two fourth chutes are formed on the outer side of the bolt. A limiting block is slidably connected in the fourth chutes formed on the outer side of the bolt. The limiting block is fixedly connected with the sealing cover. A threaded hole is formed inside the lower end of the bolt. The bolt is threadedly connected with the threaded ring through the threaded hole. A second limiting ring is fixedly connected to the outer side of the lower end of the bolt. The upper end of the second limiting ring is rotatably connected with the sealing cover.

3. The medical high-speed tabletop centrifuge according to claim 2, characterized in that, On the upper side of the sealing cover, a plurality of clamping mechanisms are symmetrically arranged. The clamping mechanism includes a fixed block. One side of the fixed block is fixedly connected to the sealing cover. A fifth chute is opened inside the fixed block. A fifth through hole communicating with the fifth chute is opened on the other side of the fixed block. A sliding rod is slidably connected in the fifth through hole opened on the other side of the fixed block and communicating with the fifth chute. A button is fixedly connected to the end of the sliding rod. A collar is sleeved outside the sliding rod. The collar is fixedly connected to the sliding rod. A first spring is fixedly connected to one side of the collar close to the bolt. The first spring is sleeved outside the sliding rod. The other end of the first spring is fixedly connected to a fixing plate. A sixth through hole is opened inside the fixing plate. The sliding rod is slidably connected in the sixth through hole opened inside the fixing plate. The fixing plate is fixedly connected inside the fixed block. A limiting slider is fixedly connected to one end of the sliding rod close to the bolt. The limiting slider is slidably connected in the fifth chute opened inside the fixed block. Two rows of first limiting teeth are arranged on one side of the limiting slider close to the fixing plate; Seventh through holes communicating with the fifth chute inside the fixed block are opened on the upper and lower sides of the fixed block. Limiting sliding rods are slidably connected in the seventh through holes on the upper and lower sides of the fixed block. A notch is opened at the upper end of the limiting sliding rod. The sliding rod is slidably connected in the notch opened at the upper end of the limiting sliding rod. Second limiting teeth meshing with the first limiting teeth are fixedly connected to the limiting sliding rod. An arc-shaped notch is opened at the lower end of the limiting sliding rod. A plurality of limiting protrusions are arranged in the arc-shaped notch opened at the lower end of the limiting sliding rod. The limiting sliding rod abuts against the rotating ring through the limiting protrusions. A plurality of eighth through holes are opened inside the sealing cover. The limiting sliding rod is slidably connected in the eighth through holes opened inside the sealing cover; Sixth chutes communicating with the fifth through hole inside the fixed block are opened on both sides inside the fixed block. Support plates are fixedly connected to both side surfaces of the limiting sliding rod. A second spring is fixedly connected to the upper end of the support plate. The other end of the second spring is fixedly connected to the fixed block. The support plate is slidably connected in the sixth chute.

4. The medical high-speed tabletop centrifuge according to claim 3, characterized in that, A limiting mechanism is arranged at the upper end of the clamping mechanism. The limiting mechanism includes a fixed shell. The fixed shell is fixedly connected to the upper end of the fixed block. A seventh chute is opened on the lower side of the fixed shell. A third spring is fixedly connected in the seventh chute opened on the lower side of the fixed shell. The other end of the third spring is fixedly connected to a sliding block. The sliding block is slidably connected in the seventh chute opened on the lower side of the fixed shell. A pushing rod is fixedly connected inside the sliding block. Ninth through holes communicating with the seventh chute on the lower side of the fixed shell are opened on both sides of the fixed shell. The pushing rod is slidably connected in the ninth through hole.

5. A medical high-speed tabletop centrifuge according to claim 4, characterized in that, One side of the main box body is rotatably connected with a cover body through a rotating shaft. An iron block is fixedly connected to the front side of the cover body. An electromagnetic block is fixedly connected to the front side of the main box body.

6. A medical high-speed tabletop centrifuge according to claim 5, characterized in that, An operation screen is arranged on the front side of the main box body.

7. A medical high-speed tabletop centrifuge according to claim 6, characterized in that, A centrifuge tube is arranged inside the mounting hole.

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