Medical high-speed table type centrifugal machine

Abstract

The invention relates to the field of medical centrifugal machines, in particular to a medical high-speed table type centrifugal machine. When the centrifugal test tubes with different sizes are encountered each time, the centrifugal rotating body needs to be replaced, so that the working efficiency of workers is greatly reduced. In order to solve the technical problem, the medical high-speed table centrifuge comprises a main box body, a power mechanism is arranged at the bottom of the main box body, the power mechanism comprises 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, and the outer side of the output shaft is fixedly connected with a plurality of wedge blocks; a centrifugal mechanism is arranged on the outer side of the output shaft and comprises a centrifugal rotating body. According to the centrifugal test tube clamping device, the centrifugal mechanism is arranged, when a rotating ring rotates, the distance between a curved plate and a mounting hole can be adjusted through cooperation of a sliding seat and a limiting rod, and therefore centrifugal test tubes of different sizes can be clamped.

Description

Technical Field

[0001] The invention relates to the field of medical centrifuges, in particular to a medical high-speed desktop centrifuge. Background Art

[0002] The basic principle of a medical high-speed desktop centrifuge is to use the strong centrifugal force generated by the high-speed rotation of the rotor to force these particles to overcome diffusion and produce sedimentation movement, thereby achieving the separation of materials with different sedimentation coefficients and buoyancy densities in the sample. Medical high-speed desktop centrifuges have a wide range of applications in the biomedical field, such as cell biology research, protein research, virus and microbial research, etc. In order to meet the separation needs of different samples, medical high-speed desktop centrifuges are usually equipped with multiple types of rotors with different capacities to meet the separation requirements of centrifuge tubes of different sizes. Therefore, every time a centrifuge tube of a different size is encountered, the centrifuge rotor needs to be replaced, which greatly reduces the work efficiency of the staff. Summary of the invention

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

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a medical high-speed desktop centrifuge, comprising a main housing, a power mechanism is provided at the bottom of the main housing, the power mechanism comprises a motor, the motor is fixedly mounted at the bottom of the main housing, an output end of the motor is fixedly connected to an output shaft, a plurality of wedges are fixedly connected to the outside of the output shaft, a centrifugal mechanism is provided on the outside of the output shaft, the centrifugal mechanism comprises a centrifugal rotor, a first through hole is provided in the middle of the centrifugal rotor, the output shaft is slidably connected to the first through hole provided in the middle of the centrifugal rotor, a positioning ring is fixedly connected to the lower side of the centrifugal rotor, a positioning ring is provided in the middle of the positioning ring The second through hole, the output shaft is slidably connected to the second through hole opened in the middle of the positioning ring, the lower end of the positioning ring is provided with a plurality of first sliding grooves, the wedge block limit sliding in the first sliding groove opened at the lower end of the positioning ring, the middle part of the upper end of the centrifugal rotor is fixedly connected with a threaded ring, the lower side of the threaded ring is fixedly connected with a fixing ring, the fixing ring is rotatably connected with a threaded rotating rod, the fixing ring is rotatably connected with the first limiting ring on the upper and lower sides, the first limiting ring is fixedly connected to the threaded rotating rod, the outer side of the lower end of the threaded rotating rod is provided with a thread, the upper end of the output shaft is provided with a threaded hole, and the threaded rotating rod is threadedly connected to the output shaft through a thread.

[0005] Preferably, the centrifugal rotor is symmetrically provided with a plurality of mounting holes, the centrifugal rotor is provided with a plurality of second slide grooves, the second slide grooves in the centrifugal rotor are provided with a third through hole on the outside, the second slide grooves in the centrifugal rotor are communicated with the mounting hole through the third through hole, the second slide grooves in the centrifugal rotor are rotatably connected with a rotating circle at the upper end thereof, a thread is provided on the outside of the lower end of the rotating circle, a sliding seat is provided on the outside of the lower end of the rotating circle, the sliding seat is slidably connected to the second slide groove in the centrifugal rotor, a thread is provided on the inner side of the upper end of the sliding seat, the sliding seat is threadedly connected to the rotating circle through the thread, a plurality of third slide grooves are provided on the outside of the lower end of the sliding seat, the third slide grooves provided at the lower end of the sliding seat are slidably connected to a limiting rod, the limiting rod is slidably connected to the third through hole provided on the outside of the third slide groove of the centrifugal rotor, and the other end of the limiting rod is fixedly connected to a curved plate.

[0006] Preferably, a sealing mechanism is provided on the upper side of the centrifugal rotor, and the sealing mechanism includes a sealing cover, a fourth through hole is opened in the middle of the sealing cover, a bolt is rotatably connected in the fourth through hole opened in the middle of the sealing cover, two fourth sliding grooves are opened on the outer side of the bolt, a limiting block is slidably connected in the fourth sliding groove opened on the outer side of the bolt, the limiting block is fixedly connected to the sealing cover, a threaded hole is opened 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, and the upper end of the second limiting ring is rotatably connected to the sealing cover.

[0007] Preferably, a plurality of clamping mechanisms are symmetrically arranged on the upper side of the sealing cover, the clamping mechanism comprises a fixing block, one side of the fixing block is fixedly connected to the sealing cover, a fifth sliding groove is provided inside the fixing block, a fifth through hole communicating with the fifth sliding groove is provided on the other side of the fixing block, a sliding rod is slidably connected in the fifth through hole communicating with the fifth sliding groove provided on the other side of the fixing block, a button is fixedly connected to the end of the sliding rod, a ferrule is sleeved on the outer side of the sliding rod, the ferrule is fixedly connected to the sliding rod, a spring 1 is fixedly connected on one side of the ferrule close to the bolt, the spring is set on the outer side of the sliding rod, the other end of the spring 1 is fixedly connected to a fixing plate, a sixth through hole is provided inside the fixing plate, the sliding rod is slidably connected in the sixth through hole provided in the fixing plate, the fixing plate is fixedly connected to the fixing block, one end of the sliding rod close to the bolt is fixedly connected to the limiting slider, the limiting slider is slidably connected in the fifth sliding groove provided in the fixing block, and two rows of first limiting teeth are provided on the side of the limiting slider close to the fixing plate.

[0008] Preferably, the fixing block is provided with seventh through holes on the upper and lower sides thereof and communicated with the fifth sliding groove inside the fixing block, the seventh through holes on the upper and lower sides of the fixing block are slidably connected to a limit slide bar, a notch is provided at the upper end of the limit slide bar, the sliding rod is slidably connected to the notch provided at the upper end of the limit slide bar, a second limit tooth meshing with the first limit tooth is fixedly connected to the limit slide bar, an arc-shaped notch is provided at the lower end of the limit slide bar, a plurality of limit protrusions are provided in the arc-shaped notch provided at the lower end of the limit slide bar, the limit slide bar is abutted against the rotating circle through the limit protrusions, a plurality of eighth through holes are provided inside the sealing cover, and the limit slide bar is slidably connected to the eighth through hole provided inside the sealing cover.

[0009] Preferably, a sixth sliding groove communicating with the fifth through hole inside the fixed block is opened on both sides of the fixed block, support plates are fixedly connected to the two side surfaces of the limiting slide rod, a spring 2 is fixedly connected to the upper end of the support plate, the other end of the spring 2 is fixedly connected to the fixed block, and the support plate is slidably connected in the sixth sliding groove.

[0010] Preferably, a limiting mechanism is provided at the upper end of the clamping mechanism, and the limiting mechanism includes a fixed shell, the fixed shell is fixedly connected to the upper end of the fixed block, a seventh sliding groove is opened at the lower side of the fixed shell, a spring three is fixedly connected in the seventh sliding groove opened at the lower side of the fixed shell, the other end of the spring three is fixedly connected to a sliding block, the sliding block is slidably connected in the seventh sliding groove opened at the lower side of the fixed shell, a push rod is fixedly connected inside the sliding block, ninth through holes are opened on both sides of the fixed shell and communicated with the seventh sliding groove at the lower side of the fixed shell, and the push rod is slidably connected in the ninth through hole.

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

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

[0013] Preferably, a centrifugal test tube is provided inside the mounting hole.

[0014] Beneficial Effects 1. The centrifugal mechanism of the present invention can adjust the distance between the curved plate and the mounting hole through the cooperation of the sliding seat and the limit rod when rotating in a circle, so that centrifugal test tubes of different sizes can be clamped, avoiding the trouble of frequently replacing the centrifugal rotor when clamping centrifugal test tubes of different specifications. At the same time, the curved plate can clamp the centrifugal test tube to avoid the centrifugal test tube being unstable and affecting the centrifugal effect during the centrifugal rotation process, thereby improving the convenience of use of the medical high-speed desktop centrifuge.

[0015] 2. Through the cooperation of the clamping mechanism and the limiting mechanism, the rotating circle can be limited and clamped, which avoids the rotating circle from rotating due to excessive rotation speed during centrifugal rotation, increases the clamping strength of the curved plate on the centrifugal test tube, and ensures the accuracy of the medical high-speed desktop centrifuge. At the same time, the division of labor between the clamping mechanism and the limiting mechanism reduces the difficulty of work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the main box body of the present invention; Figure 3 It is a schematic diagram of the overall structure of the centrifugal mechanism of the present invention; Figure 4 It is a structural schematic diagram of the sliding seat of the present invention; Figure 5 is a cross-sectional view of a centrifugal rotor of the present invention; Figure 6 It is a structural schematic diagram of the sealing mechanism of the present invention; Figure 7 It is a structural schematic diagram of the clamping mechanism of the present invention; Figure 8 It is a structural schematic diagram of the position-limiting sliding rod of the present invention; Fig. 9 It is a structural schematic diagram of the limiting mechanism of the present invention.

[0017] The marks in the attached drawings are: 1, main box; 101, cover; 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, fixing ring; 305, threaded rotating rod; 306, sliding seat; 307, limiting rod; 308, curved plate; 309, rotating circle; 310, mounting hole; 4 , sealing mechanism; 401, sealing cover; 402, bolt; 403, limit block; 5, clamping mechanism; 501, fixed block; 502, sliding rod; 503, ring; 504, spring one; 505, fixed plate; 506, limit slider; 507, limit slider; 508, spring two; 6, limit mechanism; 601, fixed shell; 602, spring three; 603, sliding block; 604, push rod; 7, centrifuge test tube; 8, operation screen. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] A medical high-speed desktop centrifuge, such as Figure 1-Figure 5As shown, it includes a main box body 1, an operation screen 8 of an operating device 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, an output end of the motor 201 is fixedly connected with an output shaft 202, four wedge blocks 203 are fixedly connected to the outer side of the output shaft 202, a centrifugal mechanism 3 for installing a centrifugal test 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 sliding grooves are opened at the lower end of the positioning ring 302, and the wedge block 203 is limited to slide in the positioning The first stop ring 304 is connected to the first stop ring 305, and the second stop ring 305 is connected to the first stop ring 305. The first stop ring 304 is connected to the first stop ring 305, and the second stop ring 305 is connected to the first stop ring 305. The first stop ring 304 is connected to the first stop ring 305, and the second stop ring 305 is connected to the first stop ring 305. The first stop ring and the threaded rotating rod 305 are fixedly connected to the first stop ring 305 on both sides of the fixing ring 304. The threaded rotating rod 305 can be rotated within the fixing ring 304. The threaded rotating rod 305 is provided with threads on the outer side of the lower end. A threaded hole is provided at the upper end of the output shaft 202. The threaded rotating rod 305 is threadedly connected to the output shaft 202 through 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 threads.

[0020] like Figure 3-Figure 5As shown, eight mounting holes 310 for mounting the centrifugal test tube 7 are symmetrically provided inside the centrifugal rotor 301, and the centrifugal test tube 7 is arranged inside the mounting hole 310. A plurality of second slide grooves cooperating with the sliding seat 306 and the rotating circle 309 are provided inside the centrifugal rotor 301, and the second slide groove is an annular slide groove. Eight third through holes are provided on the outer side of the second slide groove provided inside the centrifugal rotor 301, and the second slide groove provided inside the centrifugal rotor 301 is communicated with the mounting hole 310 through the third through holes. The second slide groove provided inside the centrifugal rotor 301 is rotatably connected with the rotating circle 309 at the upper end, and a notch for increasing friction is provided on the outer side of the upper end of the rotating circle 309, and a thread is provided on the outer side of the lower end of the rotating circle 309, and a sliding seat 306 is provided on the outer side of the lower end of the rotating circle 309, and the sliding seat 306 is slidably connected to the second slide groove provided inside the centrifugal rotor 301, and the sliding seat The inner side of the upper end of 306 is provided with a thread, and the sliding seat 306 is threadedly connected to the rotating circle 309 through the thread. The rotating circle 309 can drive the sliding seat 306 to slide up and down through the thread. Eight third sliding grooves are opened on the outer side of the lower end of the sliding seat 306. A limiting rod 307 is slidably connected in the third sliding groove opened at the lower end of the sliding seat 306. A sliding ball is provided at the inner end of the limiting rod 307, and the sliding ball is stuck in the third sliding groove opened on the outer side of the lower end of the sliding seat 306. The limiting rod 307 is slidably connected in the third through hole opened on the outer side of the third sliding groove of the centrifugal rotor 301. The other end of the limiting rod 307 is fixedly connected with a curved plate 308. The sliding seat 306 drives the limiting rod 307 to move up and down along the third through hole opened in the centrifugal rotor 301 through the cooperation of the third sliding groove and the sliding ball. Further, the limiting rod 307 drives the curved plate 308 to clamp and release the centrifugal test tube 7.

[0021] like Figure 3 , Figure 6 , Figure 7 As shown, a sealing mechanism 4 for sealing the centrifugal rotor 301 is provided on the upper side of the centrifugal rotor 301, and the sealing mechanism 4 includes a sealing cover 401, a fourth through hole is provided in the middle of the sealing cover 401, a bolt 402 is rotatably connected in the fourth through hole provided in the middle of the sealing cover 401, a fourth slide groove is provided on the outer side of the bolt 402, and the fourth slide groove is an annular slide groove, and two limit blocks 403 are slidably connected in the fourth slide groove provided on the outer side of the bolt 402, and the limit blocks 403 are symmetrically arranged on the outer side of the bolt 402. The limiting block 403 is fixedly connected to the sealing cover 401, and a threaded hole is opened inside the lower end of the bolt 402, and the bolt 402 is threadedly connected to the thread ring 303 through the threaded hole. The bolt 402 drives the sealing cover 401 to be slidably installed on the upper side of the thread ring 303 through the thread, and a second limiting ring is fixedly connected to the outer side of the lower end of the bolt 402, and 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 block 403, the sealing cover 401 is limited to rotate outside the bolt 402.

[0022] like Figure 3 , Figure 7 , Figure 8 As shown, a plurality of clamping mechanisms 5 for clamping and limiting the rotating circle 309 are symmetrically arranged on the upper side of the sealing cover 401, and 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 slide groove is provided inside the fixed block 501, a fifth through hole communicating with the fifth slide groove is provided on the other side of the fixed block 501, a sliding rod 502 is slidably connected in the fifth through hole communicating with the fifth slide groove provided on the other side of the fixed block 501, a button is fixedly connected to the end of the sliding rod 502, a ring 503 is sleeved on the outer side of the sliding rod 502, the ring 503 is fixedly connected to the sliding rod 502, and the ring 503 is close to the screw One side of the bolt 402 is fixedly connected to a spring 504, and the spring 504 is sleeved on the outside of the sliding rod 502. The other end of the spring 504 is fixedly connected to a fixing plate 505, and a sixth through hole is opened inside the fixing plate 505. The sliding rod 502 is slidably connected in the sixth through hole opened in the fixing plate 505, and the fixing plate 505 is fixedly connected to the inside of the fixing block 501. One end of the sliding rod 502 close to the bolt 402 is fixedly connected to a limiting slider 506, and the limiting slider 506 is slidably connected in the fifth sliding groove opened in the inside of the fixing block 501. Two rows of first limiting teeth are provided on the side of the limiting slider 506 close to the fixing plate 505.

[0023] like Figure 7 , Figure 8 As shown, seventh through holes communicating with the fifth sliding groove inside the fixed block 501 are provided on the upper and lower sides of the fixed block 501, and a limit 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 provided at the upper end of the limit slide bar 507, and the sliding bar 502 is slidably connected in the notch provided in the upper end of the limit slide bar 507, and a second limit tooth meshing with the first limit tooth is fixedly connected to the limit slide bar 507, an arc-shaped notch is provided at the lower end of the limit slide bar 507, and a plurality of limit protrusions are provided in the arc-shaped notch provided at the lower end of the limit slide bar 507, and the limit slide bar 507 is abutted against the rotating circle 309 through the limit protrusion, and the limit slide bar 507 limits the rotating circle 309 through the limit protrusion, and a plurality of eighth through holes are provided inside the sealing cover 401, and the limit slide bar 507 is slidably connected in the eighth through hole provided inside the sealing cover 401. Spring 1 504 always releases elastic potential energy to push the sliding rod 502 outward through the fixed plate 505. The sliding rod 502 limits the limiting sliding rod 507 through the first limiting teeth on the side of the limiting sliding block 506 to prevent the limiting sliding rod 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 sliding rod 507 through the limiting sliding block 506. After disengagement, the limiting sliding rod 507 can move upward.

[0024] like Figure 7 , Figure 8As shown, sixth slide grooves communicating with the fifth through hole in the fixed block 501 are provided on both sides of the fixed block 501, and the sixth slide groove is a rectangular slide groove. Support plates are fixedly connected to the two sides of the limiting slide rod 507, and the support plates are rectangular plates. A second spring 508 is fixedly connected to the upper end of the support plate, and the other end of the second spring 508 is fixedly connected to the fixed block 501. The support plate is slidably connected in the sixth slide groove, and the second springs 508 on both sides release elastic potential energy to push the limiting slide rod 507 downward through the support plate. The limiting slide rod 507 limits the rotating circle 309 through the limiting protrusion at its lower end.

[0025] like Figure 7-Figure 9 As shown, a limiting mechanism 6 for limiting the sliding rod 502 is provided at the upper end of the clamping mechanism 5, and the limiting mechanism 6 includes a fixed shell 601, which is fixedly connected to the upper end of the fixed block 501, and a seventh sliding groove is provided at the lower side of the fixed shell 601, and the seventh sliding groove is a rectangular sliding groove. A spring three 602 is fixedly connected in the seventh sliding groove provided at the lower side of the fixed shell 601, and the other end of the spring three 602 is fixedly connected to a sliding block 603, and the sliding block 603 is slidably connected in the seventh sliding groove provided at the lower side of the fixed shell 601, and a pushing rod 604 is fixedly connected inside the sliding block 603, and ninth through holes communicating with the seventh sliding groove at the lower side of the fixed shell 601 are provided on both sides of the fixed shell 601, and the pushing rod 604 is slidably connected in the ninth through hole, and the spring three 602 releases elastic potential energy to limit the sliding rod 502 through the sliding block 603, and the pushing rod 604 is pulled to drive the sliding block 603 to move upward, thereby releasing the limitation on the sliding rod 502.

[0026] like Figure 1 As shown, one side of the main box body 1 is rotatably connected to a cover body 101 via a rotating shaft, the front side of the cover body 101 is fixedly connected to an iron block 103, and the front side of the main box body 1 is fixedly connected to an electromagnetic block 102. The cover body 101 is tightly closed through the cooperation of the electromagnetic block 102 and the iron block 103.

[0027] Working principle: First, place the centrifugal test tube 7 in the mounting hole 310, rotate the rotating circle 309 clockwise, the rotating circle 309 drives the sliding seat 306 to move upward through the thread, the sliding seat 306 pushes the limiting rod 307 to slide outward along the third through hole opened inside the centrifugal rotor 301 through the inclined surface of the second slide groove, and the limiting rod 307 clamps the centrifugal test tube 7 through the curved plate 308; Secondly, the sealing cover 401 is installed, and the sliding rod 502 is pushed inward. The sliding rod 502 compresses the spring 1 504 through the ring 503, and the sliding rod 502 drives the limiting slider 506 to move to the side close to the bolt 402. The first limiting tooth on the side of the limiting slider 506 loses the limit on the limiting slider 507. At the same time, the button at the end of the limiting slider 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 spring 3 602. When the button at the end of the limiting slider 507 passes the sliding block 603, the spring 3 602 releases its elastic potential energy and pushes the sliding block 603 downward, and the sliding block 603 limits the limiting slider 507. Then, the bolt 402 is placed on the upper side of the threaded ring 303, and the bolt 402 is rotated clockwise. The bolt 402 moves downward through the threaded ring 303, and the bolt 402 drives the sealing cover 401 to move downward through the limiting block 403 to seal the centrifugal rotor 301. At the same time, the lower ends of the limiting slide bars 507 on both sides are against the limiting grooves on the sides of the rotating ring 309 through the limiting protrusions. The sealing cover 401 moves downward and drives the fixing block 501 to compress the spring 2 508 downward, and the bolt 402 is continuously tightened clockwise to seal the centrifugal rotor 301 through the sealing cover 401. After the sealing is completed, the two limiting slide bars 507 are pushed upward in sequence. The push rod 604 on the side compresses the spring three 602 upward through the sliding block 603, and the sliding block 603 loses the limit on the button at the end of the sliding rod 502. The spring one 504 releases the elastic potential energy to push the sliding rod 502 outward through the ring 503, and the sliding rod 502 drives the limiting slider 506 to move to the side away from the bolt 402. The limiting slider 506 limits the limiting slide rod 507 through the cooperation of the first limiting tooth and the second limiting tooth, preventing the limiting slide rod 507 from moving upward with the centrifugal movement, thereby further ensuring that the limiting slide rod 507 limits the rotating circle 309.

[0028] After the sealing cover 401 is installed, the cover body 101 is closed. Secondly, the electromagnetic block 102 is energized through the operation screen 8, and the cover body 101 is sealed through the cooperation of the electromagnetic block 102 and the iron block 103. Next, the motor 201 is started through the operation screen 8, and the motor 201 drives the output shaft 202 to rotate clockwise, and the output shaft 202 drives the positioning ring 302 to rotate clockwise through the wedge block 203, and the positioning ring 302 drives the centrifugal rotor 301 to rotate clockwise, and the centrifugal rotor 301 centrifuges the centrifugal test tube 7 inside the installation hole 310. After the centrifugation is completed, the motor 201 and the electromagnetic block 102 are turned off in sequence through the operation screen 8. Open the cover body 101, then rotate the bolt 402 counterclockwise, the bolt 402 moves upward through the threaded 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 2 508 releases the elastic potential energy to push the limiting slide bar 507 downward, so that the limiting slide bar 507 is reset, and after the sealing cover 401 is taken out, the rotating circle 309 is rotated counterclockwise, the rotating circle 309 drives the sliding seat 306 to move downward through the thread, and 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 surface of the second slide groove, and the limiting rod 307 relaxes the centrifugal test tube 7 through the curved plate 308, and further, the centrifugal test tube 7 is taken out.

[0029] When the centrifugal rotor 301 needs to be replaced, the threaded rotating rod 305 is rotated counterclockwise, and the threaded rotating rod 305 is screwed out of the upper end of the output shaft 202 through the thread, and the threaded rotating rod 305 drives the centrifugal rotor 301 and the positioning ring 302 to move upward through the first limiting circle, so that the first sliding groove on the lower side of the positioning ring 302 disengages from the wedge block 203, and the centrifugal rotor 301 is taken out; then the new centrifugal rotor 301 is placed on the output shaft 202, and the threaded rotating rod 305 is rotated clockwise, and the threaded rotating rod 305 is screwed into the upper end of the output shaft 202 through the thread, and the angle of the centrifugal rotor 301 is adjusted at the same time, the wedge block 203 is stuck in the first sliding groove at the lower end of the positioning ring 302, and the threaded rotating rod 305 is further screwed in, so that the centrifugal rotor 301 is fixed on the upper end of the output shaft 202.

[0030] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A medical high-speed desktop centrifuge, characterized in that: The invention comprises a main housing (1), wherein a power mechanism (2) is provided at the bottom of the main housing (1), wherein the power mechanism (2) comprises a motor (201), wherein the motor (201) is fixedly mounted at the bottom of the main housing (1), wherein an output end of the motor (201) is fixedly connected to an output shaft (202), wherein a plurality of wedges (203) are fixedly connected to the outside of the output shaft (202), wherein a centrifugal mechanism (3) is provided on the outside of the output shaft (202), wherein the centrifugal mechanism (3) comprises a centrifugal rotor (301), wherein a first through hole is provided in the middle of the centrifugal rotor (301), wherein the output shaft (202) is slidably connected to the first through hole provided in the middle of the centrifugal rotor (301), wherein a positioning ring (302) is fixedly connected to the lower side of the centrifugal rotor (301), wherein a second through hole is provided in the middle of the positioning ring (302), wherein the output shaft (20 2) being slidably connected in a second through hole opened in the middle of the positioning ring (302), a plurality of first sliding grooves being opened at the lower end of the positioning ring (302), the wedge block (203) slidingly limited in the first sliding groove opened at the lower end of the positioning ring (302), a threaded ring (303) being fixedly connected in the middle of the upper end of the centrifugal rotor (301), a fixing ring (304) being fixedly connected inside the lower side of the threaded ring (303), a threaded rotating rod (305) being rotatably connected inside the fixing ring (304), a first limiting ring being rotatably connected at the upper and lower sides of the fixing ring (304), the first limiting ring being fixedly connected to the threaded rotating rod (305), a thread being provided on the outer side of the lower end of the threaded rotating rod (305), a thread being provided at the upper end of the output shaft (202), the threaded rotating rod (305) being threadedly connected to the output shaft (202) through a thread.

2. A medical high-speed desktop centrifuge according to claim 1, characterized in that: A plurality of mounting holes (310) are symmetrically provided inside the centrifugal rotor (301), a plurality of second slide grooves are provided inside the centrifugal rotor (301), a third through hole is provided outside the second slide grooves inside the centrifugal rotor (301), the second slide grooves provided inside the centrifugal rotor (301) are connected to the mounting holes (310) through the third through hole, a rotating ring (309) is rotatably connected to the upper end of the second slide grooves provided inside the centrifugal rotor (301), a thread is provided on the outer side of the lower end of the rotating ring (309), a sliding seat (306) is provided on the outer side of the lower end of the rotating ring (309), and the sliding seat ( The centrifugal rotor (301) is slidably connected to a second slide groove provided inside the centrifugal rotor (301); a thread is provided on the inner side of the upper end of the slide seat (306); the slide seat (306) is threadedly connected to the rotating ring (309) through the thread; a plurality of third slide grooves are provided on the outer side of the lower end of the slide seat (306); a limiting rod (307) is slidably connected in the third slide groove provided at the lower end of the slide seat (306); the limiting rod (307) is slidably connected in a third through hole provided on the outer side of the third slide groove of the centrifugal rotor (301); and the other end of the limiting rod (307) is fixedly connected to a curved plate (308).

3. A medical high-speed desktop centrifuge according to claim 2, characterized in that: A sealing mechanism (4) is provided on the upper side of the centrifugal rotor (301), and the sealing mechanism (4) comprises a sealing cover (401), a fourth through hole is provided in the middle of the sealing cover (401), a bolt (402) is rotatably connected in the fourth through hole provided in the middle of the sealing cover (401), two fourth sliding grooves are provided on the outer side of the bolt (402), a limiting block (403) is slidably connected in the fourth sliding groove provided on the outer side of the bolt (402), the limiting block (403) is fixedly connected to the sealing cover (401), a threaded hole is provided inside the lower end of the bolt (402), the bolt (402) is threadedly connected to the threaded ring (303) through the threaded hole, a second limiting ring is fixedly connected to the outer side of the lower end of the bolt (402), and the upper end of the second limiting ring is rotatably connected to the sealing cover (401).

4. A medical high-speed desktop centrifuge according to claim 3, characterized in that: A plurality of clamping mechanisms (5) are symmetrically arranged on the upper side of the sealing cover (401), and the clamping mechanism (5) comprises a fixed block (501), one side of the fixed block (501) is fixedly connected to the sealing cover (401), a fifth sliding groove is provided inside the fixed block (501), a fifth through hole communicating with the fifth sliding groove is provided on the other side of the fixed block (501), a sliding rod (502) is slidably connected in the fifth through hole communicating with the fifth sliding groove provided on the other side of the fixed block (501), a button is fixedly connected to the end of the sliding rod (502), a ferrule (503) is sleeved on the outer side of the sliding rod (502), the ferrule (503) is fixedly connected to the sliding rod (502), and the ferrule (503) is close to the side of the bolt (402). A spring 1 (504) is fixedly connected, and the spring 1 (504) is sleeved on the outside of the sliding rod (502). The other end of the spring 1 (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 fixing block (501). One end of the sliding rod (502) close to the bolt (402) is fixedly connected to a limiting slider (506). The limiting slider (506) is slidably connected in a fifth sliding groove opened inside the fixing block (501). Two rows of first limiting teeth are provided on one side of the limiting slider (506) close to the fixing plate (505).

5. A medical high-speed desktop centrifuge according to claim 4, characterized in that: The fixing block (501) is provided with seventh through holes on the upper and lower sides thereof, which are communicated with the fifth sliding groove inside the fixing block (501); a limiting slide bar (507) is slidably connected in the seventh through holes on the upper and lower sides of the fixing block (501); a notch is provided at the upper end of the limiting slide bar (507); the sliding bar (502) is slidably connected in the notch provided in 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 provided at the lower end of the limiting slide bar (507); a plurality of limiting protrusions are provided in the arc-shaped notch provided at the lower end of the limiting slide bar (507); the limiting slide bar (507) is abutted against the rotating circle (309) through the limiting protrusions; a plurality of eighth through holes are provided in the interior of the sealing cover (401); the limiting slide bar (507) is slidably connected in the eighth through hole provided in the interior of the sealing cover (401).

6. A medical high-speed desktop centrifuge according to claim 5, characterized in that: The fixing block (501) has sixth sliding grooves on both sides thereof which are in communication with the fifth through hole inside the fixing block (501); the limiting sliding rod (507) has support plates fixedly connected to its two sides; the upper end of the support plate is fixedly connected to a second spring (508); the other end of the second spring (508) is fixedly connected to the fixing block (501); and the support plate is slidably connected to the sixth sliding groove.

7. A medical high-speed desktop centrifuge according to claim 6, characterized in that: A limiting mechanism (6) is provided at the upper end of the clamping mechanism (5), and the limiting mechanism (6) comprises a fixed shell (601), the fixed shell (601) is fixedly connected to the upper end of the fixed block (501), a seventh sliding groove is provided at the lower side of the fixed shell (601), a spring three (602) is fixedly connected in the seventh sliding groove provided at the lower side of the fixed shell (601), a sliding block (603) is fixedly connected at the other end of the spring three (602), the sliding block (603) is slidably connected in the seventh sliding groove provided at the lower side of the fixed shell (601), a push rod (604) is fixedly connected inside the sliding block (603), and ninth through holes communicating with the seventh sliding groove at the lower side of the fixed shell (601) are provided on both sides of the fixed shell (601), and the push rod (604) is slidably connected in the ninth through hole.

8. A medical high-speed desktop centrifuge according to claim 7, characterized in that: One side of the main box body (1) is rotatably connected to a cover body (101) via a rotating shaft, the front side of the cover body (101) is fixedly connected to an iron block (103), and the front side of the main box body (1) is fixedly connected to an electromagnetic block (102).

9. A medical high-speed desktop centrifuge according to claim 8, characterized in that: An operating screen (8) is provided on the front side of the main box body (1).

10. A medical high-speed desktop centrifuge according to claim 9, characterized in that: A centrifugal test tube (7) is arranged inside the mounting hole (310).

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