Centrifugal device for clinical laboratory

Abstract

The invention discloses a centrifugal device for a clinical laboratory, and relates to the technical field of centrifugal detection equipment, the centrifugal device comprises supporting legs, a shell with a bottom, a horizontal plate, a vertical plate, a mounting plate, a driving mechanism, an inner rotating barrel, an outer rotating barrel, a first test tube rack and a second test tube rack, the second test tube rack is driven to move through an oscillation mechanism, and the inner rotating barrel is driven to rotate through the driving mechanism; the outer rotating barrel is driven by the lifting mechanism to slide, the inner rotating barrel drives the lifting mechanism to work through rotation, the first test tube rack is driven by the shaking-up mechanism to move, and the outer rotating barrel drives the shaking-up mechanism to work through sliding. While the inner barrel is driven by the outer rotating barrel to rotate, the shaking-up mechanism is driven by the lifting mechanism to shake up the test tubes, so that the concentration of test tube samples in centrifugation is always uniform.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal detection equipment, and in particular to a centrifugal device for laboratory use. Background Art

[0002] Centrifugation technology is a method of separating, concentrating and purifying a group of substances from a solution by using centrifugal force based on the differences in density, sedimentation coefficient, buoyancy, etc. in the solution. Centrifugation technology is widely used in the field of chemistry and clinical laboratories.

[0003] In the leading medical field, centrifugal technology is usually used to test the patient's blood. Centrifuges are often used in the prior art to test blood. Existing centrifuges usually just put the collected blood test tubes into the centrifuge for centrifugation. After the centrifuge is left to stand for a period of time, the separated blood sample can be obtained. Before centrifugation, in order to ensure that all components in the sample are evenly distributed, the sample usually needs to be mixed in advance. The mixing process usually requires manual operation, which is relatively cumbersome. Since the substances before centrifugation are theoretically immiscible, the colloidal balance is destroyed after centrifugation, so the turbid liquid and clear night after centrifugation will not be miscible again. The traditional centrifuge in the prior art usually only has a centrifugation link, which cannot ensure that the solution components are evenly distributed before and during centrifugation, thereby requiring a longer centrifugation time.

[0004] In order to solve the above problems, a centrifugal device for laboratory use is proposed, which can ensure that the solution components are always evenly distributed before and during centrifugation. Summary of the invention

[0005] In view of the above problems, the present invention provides a centrifuge device for laboratory use, which solves the problem that the existing centrifuge usually only puts the collected blood test tube into the centrifuge for centrifugation, and the separated blood sample can be obtained after the centrifuge is left to stand for a period of time. Before centrifugation, in order to ensure that all components in the sample are evenly distributed, the sample usually needs to be mixed in advance, and the mixing process usually requires manual operation, which is relatively cumbersome. Since the substances before centrifugation are theoretically immiscible, after centrifugation, the colloidal balance is destroyed, and the turbid liquid and the clear liquid after centrifugation will not be miscible again. The traditional centrifuge in the prior art usually has only a centrifugation link, which cannot ensure that the solution components are evenly distributed before and during the centrifugation, thereby requiring a longer centrifugation time.

[0006] The technical solution adopted by the present invention is: comprising legs, a bottom shell, a horizontal plate, a vertical plate, a mounting plate, a driving mechanism, an inner rotating barrel, an outer rotating barrel, a lifting mechanism, a shaking mechanism, an oscillating mechanism, a first test tube rack, and a second test tube rack; Horizontal plates are vertically provided at both ends of the right side wall of the housing with bottom; A second test tube rack is movably arranged between the two horizontal plates, and the second test tube rack is driven to move by an oscillation mechanism, and a plurality of test tubes to be oscillated can be detachably arranged in the second test tube rack; Support legs are provided on both sides of the lower end of the left side wall of the bottom shell and the lower ends of the right side walls of the two horizontal plates; An inner rotating barrel is rotatably disposed above the bottom wall of the bottom shell, and a first gap is left between the bottom wall of the bottom shell and the bottom wall of the inner rotating barrel; The inner rotating barrel is driven to rotate by a driving mechanism, and the driving mechanism is arranged in the first gap; The outer sliding sleeve of the inner rotating barrel is provided with an outer rotating barrel; A first end of a vertical plate is vertically arranged at the middle of the upper right end of the bottom housing, a mounting plate is arranged on the left side wall of the second end of the vertical plate, and the outer rotating barrel is movably arranged below the mounting plate; A lifting mechanism is provided on the left side wall of the mounting plate; The outer rotating barrel is driven to slide by the lifting mechanism, and the inner rotating barrel drives the lifting mechanism to work by rotating; A plurality of first test tube racks are movably arranged in the outer rotating barrel, and the plurality of first test tube racks are all driven to move by the shaking mechanism, and a plurality of test tubes to be centrifuged are detachably arranged in the plurality of first test tube racks; The outer rotating barrel drives the shaking mechanism to work by sliding; The oscillating mechanism is driven to work by the lifting mechanism.

[0007] Furthermore, an inner barrel is provided inside the inner wall of the outer rotating barrel, and the top wall of the inner barrel is fixed to the top wall of the outer rotating barrel via a connecting piece; A second gap is left between the outer wall of the outer rotating barrel and the outer wall of the inner barrel; The inner rotating barrel is movably disposed in the second gap; The inner wall of the inner barrel is provided with a plurality of first rectangular through grooves matching with the first test tube rack; A plurality of rectangular mounting frames are provided on the inner wall of the inner rotating barrel and cooperate with the first rectangular through grooves; A plurality of the rectangular mounting frames are respectively slidably arranged to penetrate the first rectangular through slots matched therewith; The plurality of rectangular mounting frames are fixedly connected by a same circular ring for fixing the sliding track; The circular ring is slidably arranged on the inner wall of the inner barrel.

[0008] Furthermore, the lifting mechanism comprises an arc-shaped clamping block, a threaded connecting block, a reciprocating screw rod, a first T-shaped sliding block, and a connecting rod; The upper side wall fixing sleeve of the outer rotating barrel is provided with a circular rail; Arc-shaped clamping blocks are slidably disposed on both sides of the circular rail; A first connecting shaft is respectively provided on the outer wall of the two arc-shaped clamping blocks, and a first end of a connecting rod is respectively fixed on the outer side of the two first connecting shafts; A first T-shaped slide groove is provided on the left side wall of the mounting plate; A horizontal plate of a first T-shaped slider is slidably arranged in the first T-shaped slide groove, and a threaded connection block is fixedly arranged on the outer wall of the vertical plate of the first T-shaped slider; A reciprocating screw rod is provided through the internal thread of the threaded connection block; The bottom end of the reciprocating screw rod is fixed at the center of the upper end of the bottom wall of the inner rotating barrel; The front and rear side walls of the threaded connection block are respectively provided with a second connection shaft; The second ends of the two connecting rods are respectively fixedly sleeved on the outer sides of the two second connecting shafts; The two connecting rods both drive the oscillating mechanism to work by sliding; The outer rotating barrel drives the shaking mechanism to work through the inner barrel.

[0009] Further, the oscillating mechanism comprises a first rectangular slider and a first connecting rod; A second rectangular through groove is respectively provided on the side walls of the two horizontal plates; A first rectangular sliding block is slidably disposed in each of the two second rectangular through grooves; Two ends of the second test tube rack slide through the two second rectangular through grooves and are fixedly connected to the inner walls of the two first rectangular sliding blocks; A third connecting shaft is respectively provided on the outer wall of the two first rectangular sliding blocks, and the first end of the first connecting rod is rotatably sleeved on the outer sides of the two third connecting shafts; The second ends of the two first connecting rods are rotatably arranged on the outer walls of the first ends of the two connecting rods respectively.

[0010] Further, the driving mechanism comprises a first spur gear, a second spur gear, and a driving member; A driving member is provided below the bottom wall of the housing with bottom, and the output end of the driving member rotates and penetrates through the bottom wall fixing sleeve of the housing with bottom to provide a first straight gear; The first spur gear is movably disposed in the first gap; A second spur gear is meshed with one side of the first spur gear, and the second spur gear is rotatably arranged on the upper end of the bottom wall of the belt bottom housing via a first rotating shaft; The first rotating shaft passes through the second spur gear and is fixedly connected to the center of the bottom wall of the inner rotating barrel; A diameter of the first spur gear is greater than a diameter of the second spur gear.

[0011] Furthermore, the shaking mechanism comprises: a first connecting block, a second connecting block, a second connecting rod, a third connecting rod, a fourth connecting rod, a sliding rod, a fourth connecting shaft, a rectangular block, a second rectangular sliding block, and a fifth connecting shaft; A first connecting block is disposed at the upper end of each of the first rectangular through grooves, and each of the first connecting blocks is fixedly disposed on the inner wall of the inner barrel; The first ends of the second connecting rods are rotatably provided on both sides of the plurality of the first connecting blocks; A fourth connecting shaft is rotatably provided between the second ends of the second connecting rods located on both sides of the same first connecting block; A first end of a third connecting rod is rotatably disposed between the second ends of the second connecting rods located on both sides of the first connecting block, and the first ends of a plurality of the third connecting rods are rotatably sleeved on the fourth connecting shaft matched therewith; The second ends of the plurality of third connecting rods are rotatably arranged in the rectangular mounting frames matched therewith; Rectangular blocks are respectively provided at both ends of the plurality of fourth connecting shafts; The two rectangular blocks located below the same first connecting block are both movably arranged on the outsides of the two second connecting rods that cooperate with each other; A plurality of the rectangular blocks are provided with rectangular through holes, and a plurality of the rectangular through holes are provided with sliding rods that slide through them; A second T-shaped slide groove is respectively provided below the two slide bars located on the inner side of the same first connecting block, and a plurality of the second T-shaped slide grooves are all provided on the upper end of the bottom wall of the inner rotating barrel; Two second T-shaped sliding grooves located below the same first connecting block are both provided with a horizontal plate with a second T-shaped sliding block slidingly arranged therein; The upper ends of the vertical plates of the two second T-shaped sliding blocks located below the same first connecting block are respectively fixedly connected to the lower ends of the two sliding rods that cooperate with them; A fifth connecting shaft is respectively provided on the outer walls of the plurality of rectangular blocks; A second rectangular sliding block is rotatably sleeved on the outer walls of the plurality of fifth connecting shafts; A second connecting block is disposed at the upper end of a plurality of the rectangular mounting frames, and a sixth connecting shaft is disposed on both side walls of the second connecting block located below the same first connecting block; The first ends of the fourth connecting rods are rotatably sleeved on the outer walls of the sixth connecting shaft located on both sides of the same second connecting block; Rectangular sliding grooves are respectively provided on the inner walls of the fourth connecting rods located on both sides of the same second connecting block; The second rectangular sliding blocks located on both sides of the same second connecting block are both slidably disposed in the rectangular sliding grooves located on both sides of the same second connecting block; The first test tube racks located on both sides of the same second connecting block are fixedly arranged on the outer walls of the fourth connecting rods located on both sides of the same second connecting block.

[0012] Advantages of the present invention: The outer rotating barrel of the present invention will drive the test tube to be centrifuged inside to rotate centrifugally through the inner barrel under the drive of the driving mechanism. While the inner barrel is driven to rotate by the outer rotating barrel, it will also drive the shaking mechanism to shake the test tube through the lifting mechanism, ensuring that the concentration of the test tube sample during centrifugation is always uniform. The oscillation mechanism of the present invention can also oscillate the test tube in advance before the test tube is centrifuged, so that the concentration of the solution inside the test tube can be consistent before centrifugation, avoiding artificial oscillation.

[0013] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the working principle of the driving mechanism of the present invention; Figure 3 It is a schematic diagram of the working principle of the lifting mechanism of the present invention; Figure 4 This is a schematic diagram of the installation of the outer rotating barrel and the inner barrel of the present invention; Figure 5 It is a schematic diagram of the overall structure of the rotating barrel in the present invention; Figure 6 It is a schematic diagram of assembling the inner rotating barrel and the outer rotating barrel of the present invention; Figure 7 It is a schematic diagram of the overall structure of the shaking mechanism of the present invention; Figure 8 It is a schematic diagram of the working principle of the shaking mechanism of the present invention; Fig. 9 It is a schematic diagram of the installation position of the fourth connecting shaft and the rectangular block of the present invention; Fig.10 This is a schematic diagram of the installation position of the first test tube rack of the present invention.

[0016] Reference numerals: 1 is a support leg, 2 is a housing with a bottom, 3 is a horizontal plate, 4 is a first rectangular slider, 5 is a second test tube rack, 6 is a test tube to be shaken, 7 is a vertical plate, 8 is a mounting plate, 9 is a first T-shaped slider, 10 is a reciprocating screw, 11 is a threaded connection block, 12 is a second connecting shaft, 13 is an inner rotating barrel, 14 is an outer rotating barrel, 15 is a second spur gear, 16 is a first spur gear, 17 is a first connecting rod, 18 is a connecting rod, 19 is an arc-shaped block, 20 is an inner barrel, 21 is a second connecting rod, 22 is a third connecting rod, 23 is a fourth connecting rod, 25 is a slide rod, 26 is a fourth connecting shaft, 27 is a rectangular block, and 28 is a second rectangular slider; 301 is a second rectangular through groove; 801 is the first T-shaped slide; 1301 is a rectangular mounting frame, 1302 is a second connecting block, 1303 is a circular ring, and 1304 is a second T-shaped sliding groove; 1401 is a circular track; 2001 is a first rectangular through slot, 2002 is a first connecting block; 2601 is the sixth connecting shaft; 2701 is a rectangular through hole, and 2702 is the fifth connecting axis. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In the description of the invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0019] refer to Figures 1 to 10 A centrifugal device for laboratory use, comprising a support leg 1, a bottom shell 2, a horizontal plate 3, a vertical plate 7, a mounting plate 8, a driving mechanism, an inner rotating barrel 13, an outer rotating barrel 14, a lifting mechanism, a shaking mechanism, an oscillating mechanism, a first test tube rack 24, and a second test tube rack 5; Horizontal plates 3 are vertically mounted at both ends of the right side wall of the bottom housing 2. The bottom housing 2 is a supporting component of the device, and the horizontal plates 3 are used to mount the oscillating mechanism described later. A second test tube rack 5 is movably installed between the two horizontal plates 3. The second test tube rack 5 is driven to move by an oscillation mechanism. A plurality of test tubes 6 to be oscillated can be detachably arranged in the second test tube rack 5. The test tubes 6 to be oscillated can be detachably installed in the second test tube rack 5 by means of a rubber pad friction limiter. The second test tube rack 5 starts to drive the test tubes to oscillate before centrifugation under the drive of the oscillation mechanism, thereby avoiding artificial oscillation, which is time-consuming and labor-intensive. Legs 1 are installed on both sides of the lower end of the left side wall of the bottom shell 2 and the lower ends of the right side walls of the two horizontal plates 3, and the legs are used to support the bottom shell 2 and the horizontal plates 3; An inner rotating barrel 13 is rotatably mounted above the bottom wall of the bottom housing 2, and a first gap is left between the bottom wall of the bottom housing 2 and the bottom wall of the inner rotating barrel 13. The inner rotating barrel 13 starts to rotate under the drive of the driving mechanism described later, and a plurality of test tubes to be centrifuged located inside the inner rotating barrel 13 will perform centrifugal motion as the inner rotating barrel 13 rotates. The inner rotating barrel 13 is driven to rotate by a driving mechanism, and the driving mechanism is arranged in the first gap; The outer side of the inner rotating barrel 13 is slidably sleeved with an outer rotating barrel 14, which rotates synchronously with the inner rotating barrel 13 and slides up and down driven by the lifting mechanism described later while rotating; A first end of a vertical plate 7 is vertically mounted at the middle of the upper right end of the bottom housing 2, a mounting plate 8 is mounted on the left side wall of the second end of the vertical plate 7, and an outer rotating barrel 14 is movably disposed below the mounting plate 8; A lifting mechanism is installed on the left side wall of the mounting plate 8; The outer rotating barrel 14 is driven to slide by the lifting mechanism, and the inner rotating barrel 13 drives the lifting mechanism to work by rotating. The outer rotating barrel 14 can drive the test tube to be centrifuged inside to be synchronously shaken during the centrifugation process while the lifting mechanism drives the lifting mechanism to slide up and down, and cooperates with the shaking mechanism described later, so as to ensure that the concentration of the sample in the test tube is always uniform during the centrifugation process, thereby reducing the centrifugation time and increasing the inspection accuracy; A plurality of first test tube racks 24 are movably mounted in the outer rotating barrel 14. The plurality of first test tube racks 24 are all driven to move by the shaking mechanism. The plurality of test tubes to be centrifuged can be detachably mounted in the plurality of first test tube racks 24. The outer rotating barrel 14 drives the shaking mechanism to work by sliding; The oscillating mechanism is driven to work by the lifting mechanism.

[0020] An inner barrel 20 is installed inside the inner wall of the outer rotating barrel 14, and the top wall of the inner barrel 20 is fixed to the top wall of the outer rotating barrel 14 through a connecting piece; A second gap is left between the outer wall of the outer rotating barrel 14 and the outer wall of the inner barrel 20; The inner rotating barrel 13 is movably disposed in the second gap; The inner wall of the inner barrel 20 is provided with a plurality of first rectangular through grooves 2001 that match the first test tube rack 24; A plurality of rectangular mounting frames 1301 are mounted on the inner wall of the inner rotating barrel 13 and are matched with the first rectangular through slots 2001; A plurality of rectangular mounting frames 1301 are respectively slidably arranged to penetrate the first rectangular through slots 2001 matched therewith; The plurality of rectangular mounting frames 1301 are fixedly connected by a circular ring 1303 for fixing the sliding track; The circular ring 1303 is slidably arranged on the inner wall of the inner barrel 20, and its function is to stabilize the inner barrel 20. The outer rotating barrel 14 starts to rotate under the drive of the driving mechanism, and while rotating, since a number of rectangular mounting frames 1301 located on its inner wall are in a number of first rectangular through grooves 2001, the rectangular mounting frames 1301 transmit the rotational driving force to the side walls of the first rectangular through grooves 2001, so that the inner barrel 20 has the ability to rotate. In addition to receiving the rotational driving force from the rectangular mounting frame 1301, the first rectangular through groove 2001 also allows the rectangular mounting frame 1301 to pass through a reciprocating sliding trajectory, so that the lifting mechanism described later can drive the inner barrel 20 to slide up and down.

[0021] The lifting mechanism comprises an arc-shaped block 19, a threaded connection block 11, a reciprocating screw rod 10, a first T-shaped slider 9, and a connecting rod 18; The upper side wall of the outer rotating barrel 14 is fixedly sleeved with a circular rail 1401; Arc-shaped clamping blocks 19 are slidably installed on both sides of the circular rail 1401; First connecting shafts are respectively installed on the outer walls of the two arc-shaped clamping blocks 19, and first ends of connecting rods 18 are respectively fixedly installed on the outer sides of the two first connecting shafts; A first T-shaped slide groove 801 is provided on the left side wall of the mounting plate 8; A horizontal plate of a first T-shaped slide block 9 is slidably mounted in the first T-shaped slide groove 801, and a threaded connection block 11 is fixedly mounted on the outer wall of the vertical plate of the first T-shaped slide block 9; The reciprocating screw rod 10 is installed through the internal thread of the threaded connection block 11; The bottom end of the reciprocating screw rod 10 is fixed at the center of the upper end of the bottom wall of the inner rotating barrel 13; The second connecting shaft 12 is respectively installed on the front and rear side walls of the threaded connecting block 11; The second ends of the two connecting rods 18 are respectively fixedly sleeved on the outer sides of the two second connecting shafts 12; Both connecting rods 18 work by sliding to drive the oscillating mechanism; The outer rotating barrel 14 drives the shaking mechanism to work through the inner barrel 20. During the rotation of the inner rotating barrel 13, the reciprocating screw 10 coaxially fixed thereto is driven to have the ability to rotate. The threaded connecting block 11 threadedly connected to the reciprocating screw 10 has the ability to move up and down at this time. During the rotation of the inner rotating barrel 13, the rectangular mounting frame 1301 fixed thereto is also driven to start rotating. The rectangular mounting frame 1301 transmits the rotation driving force to the inner barrel 20 through the side wall of the first rectangular through groove 2001 through rotation, so that the inner barrel 20 has the ability to rotate synchronously with the inner rotating barrel 13. During the rotation of the inner barrel 20, it drives the outer rotating barrel 14 fixed thereto through the connecting piece, so that the outer rotating barrel 14 starts to rotate. At this time, the inner rotating barrel 13, the inner barrel 20 and the outer rotating barrel The movable barrel 14 also has the ability to rotate. In order to ensure that the outer rotating barrel 14 can also move up and down during the rotation process, the arc-shaped blocks 19 located on both sides of the circular rail 1401 slide relatively in the circular rail 1401 at this time, and while sliding, they begin to slide up and down driven by the connecting rod 18 fixedly connected to the second connecting shafts 12 on both sides. The two arc-shaped blocks 19 drive the outer rotating barrel 14 to move up and down during the up and down sliding process. The outer rotating barrel 14 drives the inner barrel 20 fixedly mounted thereon to move up and down through the connecting piece. The first T-shaped slider 9 fixedly connected to the threaded connecting block 11 begins to slide up and down along the T-shaped groove 801 at this time. The cooperation between the first T-shaped slider 9 and the T-shaped groove 801 ensures that the threaded connecting block 11 can only move up and down and will not rotate.

[0022] The oscillating mechanism comprises a first rectangular slider 4 and a first connecting rod 17; Second rectangular through slots 301 are respectively provided on the side walls of the two horizontal plates 3; The first rectangular sliding blocks 4 are slidably installed in the two second rectangular through grooves 301 respectively; The two ends of the second test tube rack 5 slide through the two second rectangular through slots 301 and are fixedly connected to the inner walls of the two first rectangular sliding blocks 4; The outer walls of the two first rectangular sliding blocks 4 are respectively mounted with third connecting shafts, and the outer sides of the two third connecting shafts are respectively mounted with first ends of the first connecting rods 17 in a rotating sleeve; The second ends of the two first connecting rods 17 are rotatably arranged on the outer walls of the first ends of the two connecting rods 18, and the connecting rods 18 on both sides respectively drive the first connecting rods 17 on both sides to start to deflect up and down during the up and down sliding process. The first connecting rods 17 on both sides respectively drive the first rectangular sliders 4 on both sides to start to slide back and forth along the second rectangular through grooves 301 on both sides during the up and down deflection process. The second test tube rack 5 fixedly installed between the two first rectangular sliders 4 starts to slide back and forth with the two first rectangular sliders 4 at this time to realize the early shaking of the internal test tubes before centrifugation.

[0023] The driving mechanism comprises a first spur gear 16, a second spur gear 15, and a driving member; A driving member is installed below the bottom wall of the bottom housing 2, and the output end of the driving member rotates through the bottom wall fixing sleeve of the bottom housing 2 to install the first straight gear 16; The first spur gear 16 is movably disposed in the first gap; A second spur gear 15 is meshed and mounted on one side of the first spur gear 16. The second spur gear 15 is rotatably mounted on the upper end of the bottom wall of the bottom housing 2 via a first rotating shaft. The first rotating shaft passes through the second spur gear 15 and is fixedly connected to the center of the bottom wall of the inner rotating barrel 13; The diameter of the first spur gear 16 is greater than that of the second spur gear 15, and the driving member is started. The driving member is a commercially available driving motor, preferably a servo motor that can control the rotation speed. This is the prior art and will not be elaborated here. The output shaft of the driving motor drives the first spur gear 16 fixedly mounted thereon, and the first spur gear 16 drives the second spur gear 15 meshing therewith by rotating. Since the diameter of the first spur gear 16 is greater than that of the second spur gear 15, the second spur gear 15 can have a faster rotation speed. The second spur gear 15 drives the inner rotating barrel 13 coaxially mounted thereon by rotating, so that the inner rotating barrel 13 has the ability to rotate quickly, and a plurality of test tubes to be centrifuged located therein realize centrifugal separation at this high rotation speed.

[0024] The shaking mechanism comprises a first connecting block 2002, a second connecting block 1302, a second connecting rod 21, a third connecting rod 22, a fourth connecting rod 23, a sliding rod 25, a fourth connecting shaft 26, a rectangular block 27, a second rectangular sliding block 28, and a fifth connecting shaft 2702; The upper ends of the plurality of first rectangular through grooves 2001 are all installed with first connection blocks 2002, and the plurality of first connection blocks 2002 are all fixedly arranged on the inner wall of the inner barrel 20; The first ends of the second connecting rods 21 are rotatably mounted on both sides of the plurality of first connecting blocks 2002; A fourth connecting shaft 26 is rotatably mounted between the second ends of the second connecting rods 21 located on both sides of the first connecting block 2002; The first end of the same third connecting rod 22 is rotatably mounted between the second ends of the second connecting rods 21 located on both sides of the same first connecting block 2002, and the first ends of the third connecting rods 22 are rotatably sleeved on the fourth connecting shaft 26 matched therewith; The second ends of the third connecting rods 22 are respectively rotatably arranged in the rectangular mounting frames 1301 matched therewith; Rectangular blocks 27 are respectively installed at both ends of the fourth connecting shafts 26; The two rectangular blocks 27 located below the same first connecting block 2002 are both movably disposed on the outside of the two second connecting rods 21 that cooperate with each other; A rectangular through hole 2701 is installed in each of the rectangular blocks 27, and a slide bar 25 is slidably installed in each of the rectangular through holes 2701; A second T-shaped slide groove 1304 is respectively provided below the two slide bars 25 located inside the same first connection block 2002. The plurality of second T-shaped slide grooves 1304 are all provided at the upper end of the bottom wall of the inner rotating barrel 13. The horizontal plates of the second T-shaped slide blocks are slidably installed in the two second T-shaped slide grooves 1304 located below the same first connection block 2002. The upper ends of the vertical plates of the two second T-shaped sliding blocks located below the same first connecting block 2002 are respectively fixedly connected to the lower ends of the two sliding rods 25 that cooperate with them; The outer walls of the plurality of rectangular blocks 27 are respectively mounted with fifth connecting shafts 2702; A second rectangular sliding block 28 is rotatably mounted on the outer walls of the plurality of fifth connecting shafts 2702; The upper ends of the plurality of rectangular mounting frames 1301 are all mounted with second connection blocks 1302, and the side walls of the second connection blocks 1302 located below the same first connection block 2002 are respectively mounted with sixth connection shafts 2601; The first ends of the fourth connecting rods 23 are rotatably mounted on the outer walls of the sixth connecting shafts 2601 located on both sides of the same second connecting block 1302; Rectangular sliding grooves 2301 are respectively provided on the inner walls of the fourth connecting rod 23 located on both sides of the same second connecting block 1302; The second rectangular sliding blocks 28 located on both sides of the same second connecting block 1302 are slidably disposed in the rectangular sliding grooves 2301 located on both sides of the same second connecting block 1302; The first test tube racks 24 located on both sides of the same second connecting block 1302 are fixedly arranged on the outer walls of the fourth connecting rods 23 located on both sides of the same second connecting block 1302. Figure 7When the inner barrel 20 starts to slide up and down driven by the lifting mechanism, the first connecting block 2002 fixedly mounted therewith has the ability to slide up and down at this time. During the up and down movement of the first connecting block 2002, the second connecting rods 21 on both sides thereof also start to move up and down. Since the inner rotating barrel 13 does not undergo longitudinal displacement, the rectangular mounting frame 1301 fixedly connected thereto does not undergo longitudinal displacement either. Therefore, during the up and down sliding process, the distance between the inner barrel 20 and the second connecting block 1302 changes back and forth. Since the ends of the second connecting rod 21 and the third connecting rod 22 are coaxially arranged, The third connecting rod 22 is rotatably connected to the second connecting block 1302, so the second connecting rod 21 located on both sides of the same first connecting block 2002 also begins to deflect forward and backward during the up and down movement. Since the axis on which the second connecting rod 21 and the third connecting rod 22 are hinged to each other is the same fourth connecting axis 26, the fourth connecting axis 26 also deflects during the reciprocating deflection of the second connecting rod 21 and the third connecting rod 22. The rectangular blocks 27 fixedly installed on both sides of the fourth connecting axis 26 also move with the fourth connecting axis 26 at this time. The sliding rod 25, the lower end of the sliding rod 25 defines the sliding trajectory of the sliding rod 25 through the cooperation of the second T-shaped sliding block and the second T-shaped sliding groove 1304, so the sliding rod 25 feeds back the driving force after defining the sliding trajectory to the fourth connecting shaft 26 fixedly connected thereto, so that the fourth connecting shaft 26 has a fixed sliding trajectory. At the same time, the first ends of the fourth connecting rods 23 located on both sides of the two sliding rods 25 have a fixed deflection trajectory. Since the rotation center of the other end of the fourth connecting rod 23 is fixed, when the sliding rod 25 slides toward the inner wall of the inner barrel 20, the fourth connecting rod 23 deflects upward, and when the sliding rod 25 moves away from the inner barrel 20, the fourth connecting rod 23 deflects upward. 0, the fourth connecting rod 23 will deflect downward, and the fourth connecting rods 23 on both sides of the same third connecting rod 22 will respectively drive the first test tube rack 24 fixed thereto to start deflecting up and down along a fixed trajectory during the up and down deflection process. The test tubes to be centrifuged and shaken in the first test tube rack 24 will then start to be shaken while the first test tube rack 24 is in centrifugal motion. It should be noted that the user can select reciprocating screws 10 with different diameters to control the extreme positions of the up and down activities of the inner barrel 20, thereby further controlling the shaking amplitude of the first test tube rack 24, which has strong versatility.

[0025] Implementation method of the present invention: Place the device on a horizontal surface, place several test tube samples to be centrifuged in the second test tube rack 5, insert several test tube samples to be centrifuged into several first test tube racks 24, and start the drive motor; The output shaft of the driving motor starts to drive the inner rotating barrel 13 to start rotating, and the inner rotating barrel 13 starts to drive the outer rotating barrel 14 and the inner barrel 20 to start rotating while rotating. At this time, the first test tube racks 24 installed in the inner barrel 20 inside the outer rotating barrel 14 start to drive the test tubes to be centrifuged to perform centrifugal motion; When the inner rotating barrel 13 rotates, it drives the reciprocating screw 10 fixedly mounted coaxially therewith to start rotating. The threaded connecting block 11 threadedly connected to the reciprocating screw 10 now has the ability to move up and down. The second connecting shafts 12 mounted on both sides of the threaded connecting block 11 now have the ability to move up and down. The arc-shaped clamping blocks 19 located on both sides of the circular rail 1401 now slide relatively in the circular rail 1401, and while sliding, they start to slide up and down driven by the connecting rods 18 fixedly connected to the second connecting shafts 12 on both sides. In the process of sliding up and down, the two arc-shaped clamping blocks 19 drive the outer rotating barrel 14 to start moving up and down. The outer rotating barrel 14 drives the inner barrel 20 fixedly mounted thereon to start moving up and down through the connecting piece. When the inner barrel 20 moves up and down, the test tube samples being centrifuged inside it will start to shake back and forth under the drive of the shaking mechanism, achieving the function of shaking while centrifuging, ensuring that the internal concentration of the samples can be uniform during the centrifugation process; While the test tubes in the inner barrel 20 are being centrifugally shaken, the second test tube rack 5 between the two horizontal plates 3 also slides back and forth synchronously under the drive of the oscillation mechanism. After the test tubes in the inner barrel 20 are centrifugally shaken, the centrifuged test tubes are taken out and placed on a static rack. Then, the test tubes to be centrifuged in the second test tube rack 5 are taken out and inserted into the second test tube racks. The next batch of test tubes to be centrifuged are placed in the second test tube rack 5, and the drive motor is started. The above operation is repeated to realize multiple batches of centrifugation.

[0026] The outer rotating barrel of the present invention will drive the test tube to be centrifuged inside to rotate centrifugally through the inner barrel under the drive of the driving mechanism. While the inner barrel is driven to rotate by the outer rotating barrel, it will also drive the shaking mechanism to shake the test tube through the lifting mechanism, ensuring that the concentration of the test tube sample during centrifugation is always uniform. The oscillation mechanism of the present invention can also oscillate the test tube in advance before the test tube is centrifuged, so that the concentration of the solution inside the test tube can be consistent before centrifugation, avoiding artificial oscillation.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A centrifugal device for laboratory use, characterized by: It comprises a support leg (1), a bottom shell (2), a horizontal plate (3), a vertical plate (7), a mounting plate (8), a driving mechanism, an inner rotating barrel (13), an outer rotating barrel (14), a lifting mechanism, a shaking mechanism, an oscillating mechanism, a first test tube rack (24), and a second test tube rack (5); Horizontal plates (3) are respectively vertically provided at both ends of the right side wall of the housing with bottom (2); A second test tube rack (5) is movably arranged between the two horizontal plates (3); the second test tube rack (5) is driven to move by an oscillation mechanism, and a plurality of test tubes (6) to be oscillated can be detachably arranged in the second test tube rack (5); Support legs (1) are provided on both sides of the lower end of the left side wall of the bottom shell (2) and the lower ends of the right side walls of the two horizontal plates (3); An inner rotating barrel (13) is rotatably provided above the bottom wall of the bottom shell (2), and a first gap is left between the bottom wall of the bottom shell (2) and the bottom wall of the inner rotating barrel (13); The inner rotating barrel (13) is driven to rotate by a driving mechanism, and the driving mechanism is arranged in the first gap; An outer sliding sleeve of the inner rotating barrel (13) is provided with an outer rotating barrel (14); A first end of a vertical plate (7) is vertically provided at the middle of the upper right end of the bottom housing (2), a mounting plate (8) is provided on the left side wall of the second end of the vertical plate (7), and the outer rotating barrel (14) is movably provided below the mounting plate (8); A lifting mechanism is provided on the left side wall of the mounting plate (8); The outer rotating barrel (14) is driven to slide by the lifting mechanism, and the inner rotating barrel (13) drives the lifting mechanism to work by rotating; A plurality of first test tube racks (24) are movably disposed in the outer rotating barrel (14), the plurality of first test tube racks (24) are all driven to move by a shaking mechanism, and a plurality of test tubes to be centrifuged are detachably disposed in the plurality of first test tube racks (24); The outer rotating barrel (14) drives the shaking mechanism to operate by sliding; The oscillating mechanism is driven to work by the lifting mechanism.

2. The centrifugal device for laboratory use according to claim 1, characterized in that: An inner barrel (20) is provided on the inner side of the inner wall of the outer rotating barrel (14), and a top wall of the inner barrel (20) is fixed to the top wall of the outer rotating barrel (14) via a connecting piece; A second gap is left between the outer wall of the outer rotating barrel (14) and the outer wall of the inner barrel (20); The inner rotating barrel (13) is movably disposed in the second gap; The inner wall of the inner barrel (20) is provided with a plurality of first rectangular through grooves (201) that match the first test tube rack (24); A plurality of rectangular mounting frames (1301) are provided on the inner wall of the inner rotating barrel (13) and cooperate with the first rectangular through grooves (2001); A plurality of the rectangular mounting frames (1301) are respectively slidably arranged to penetrate the first rectangular through slots (2001) that cooperate with them; The plurality of rectangular mounting frames (1301) are fixedly connected via a same circular ring (1303) for fixing a sliding track; The circular ring (1303) is slidably arranged on the inner wall of the inner barrel (20).

3. The centrifugal device for laboratory use according to claim 2, characterized in that: The lifting mechanism comprises an arc-shaped clamping block (19), a threaded connecting block (11), a reciprocating screw rod (10), a first T-shaped sliding block (9), and a connecting rod (18); The upper side wall fixing sleeve of the outer rotating barrel (14) is provided with a circular rail (1401); Arc-shaped clamping blocks (19) are slidably disposed on both sides of the circular rail (1401); A first connecting shaft is respectively provided on the outer wall of the two arc-shaped clamping blocks (19), and a first end of a connecting rod (18) is respectively fixedly provided on the outer side of the two first connecting shafts; A first T-shaped sliding groove (801) is provided on the left side wall of the mounting plate (8); A horizontal plate of a first T-shaped slider (9) is slidably disposed in the first T-shaped slide groove (801), and a threaded connection block (11) is fixedly disposed on the outer wall of the vertical plate of the first T-shaped slider (9); The threaded connection block (11) has an internal thread through which a reciprocating screw rod (10) is penetrated; The bottom end of the reciprocating screw rod (10) is fixedly arranged at the center of the upper end of the bottom wall of the inner rotating barrel (13); A second connecting shaft (12) is respectively provided on the front and rear side walls of the threaded connecting block (11); The second ends of the two connecting rods (18) are respectively fixedly sleeved on the outer sides of the two second connecting shafts (12); The two connecting rods (18) both drive the oscillating mechanism to work by sliding; The outer rotating barrel (14) drives the shaking mechanism to operate via the inner barrel (20).

4. The centrifugal device for laboratory use according to claim 3, characterized in that: The oscillating mechanism comprises a first rectangular slider (4) and a first connecting rod (17); Second rectangular through grooves (301) are respectively provided on the side walls of the two horizontal plates (3); A first rectangular sliding block (4) is slidably disposed in each of the two second rectangular through grooves (301); The two ends of the second test tube rack (5) slide through the two second rectangular through grooves (301) and are fixedly connected to the inner walls of the two first rectangular sliding blocks (4); A third connecting shaft is respectively provided on the outer wall of the two first rectangular sliding blocks (4), and the first end of the first connecting rod (17) is rotatably sleeved on the outer sides of the two third connecting shafts; The second ends of the two first connecting rods (17) are rotatably mounted on the outer walls of the first ends of the two connecting rods (18).

5. The centrifugal device for laboratory use according to claim 3, characterized in that: The driving mechanism comprises a first spur gear (16), a second spur gear (15), and a driving member; A driving member is provided below the bottom wall of the bottom shell (2), and the output end of the driving member rotates through a bottom wall fixing sleeve of the bottom shell (2) provided with a first spur gear (16); The first spur gear (16) is movably disposed in the first gap; A second spur gear (15) is meshed with one side of the first spur gear (16), and the second spur gear (15) is rotatably arranged on the upper end of the bottom wall of the bottom housing (2) via a first rotating shaft; The first rotating shaft passes through the second spur gear (15) and is fixedly connected to the center of the bottom wall of the inner rotating barrel (13); The diameter of the first spur gear (16) is greater than the diameter of the second spur gear (15).

6. The centrifugal device for laboratory use according to claim 3, characterized in that: The shaking mechanism comprises: a first connecting block (2002), a second connecting block (1302), a second connecting rod (21), a third connecting rod (22), a fourth connecting rod (23), a sliding rod (25), a fourth connecting shaft (26), a rectangular block (27), a second rectangular sliding block (28), and a fifth connecting shaft (2702); A first connection block (2002) is provided at the upper end of each of the first rectangular through grooves (2001), and each of the first connection blocks (2002) is fixedly arranged on the inner wall of the inner barrel (20); The first ends of the second connecting rods (21) are rotatably provided on both sides of the plurality of first connecting blocks (2002); A fourth connecting shaft (26) is rotatably provided between the second ends of the second connecting rods (21) located on both sides of the first connecting block (2002); A first end of a third connecting rod (22) is rotatably disposed between the second ends of the second connecting rods (21) located on both sides of the first connecting block (2002), and the first ends of a plurality of the third connecting rods (22) are rotatably sleeved on the fourth connecting shaft (26) matched therewith; The second ends of the plurality of third connecting rods (22) are rotatably disposed in the rectangular mounting frames (1301) that cooperate therewith; Rectangular blocks (27) are respectively provided at both ends of the plurality of fourth connecting shafts (26); The two rectangular blocks (27) located below the same first connecting block (2002) are both movably arranged on the outside of two second connecting rods (21) that cooperate with each other; A plurality of the rectangular blocks (27) are each provided with a rectangular through hole (2701), and a plurality of the rectangular through holes (2701) are each provided with a sliding rod (25) slidably passing through the plurality of the rectangular through holes (2701); A second T-shaped slide groove (1304) is respectively provided below the two slide bars (25) located on the inner side of the same first connecting block (2002), and a plurality of the second T-shaped slide grooves (1304) are all provided on the upper end of the bottom wall of the inner rotating barrel (13); Two second T-shaped sliding grooves (1304) located below the same first connecting block (2002) are each provided with a horizontal plate with a second T-shaped sliding block slidingly slidably therein; The upper ends of the vertical plates of the two second T-shaped sliding blocks located below the same first connecting block (2002) are respectively fixedly connected to the lower ends of the two sliding rods (25) that cooperate with each other; A fifth connecting shaft (2702) is respectively provided on the outer walls of the plurality of rectangular blocks (27); A second rectangular sliding block (28) is rotatably sleeved on the outer walls of a plurality of the fifth connecting shafts (2702); A second connection block (1302) is provided at the upper end of each of the rectangular mounting frames (1301), and a sixth connection shaft (2601) is provided on both side walls of the second connection block (1302) located below the same first connection block (2002); The first ends of the fourth connecting rods (23) are rotatably sleeved on the outer walls of the sixth connecting shaft (2601) located on both sides of the same second connecting block (1302); Rectangular sliding grooves (2301) are respectively provided on the inner walls of the fourth connecting rods (23) located on both sides of the same second connecting block (1302); The second rectangular sliding blocks (28) located on both sides of the same second connecting block (1302) are both slidably disposed in the rectangular sliding grooves (2301) located on both sides of the same second connecting block (1302); The first test tube racks (24) located on both sides of the same second connecting block (1302) are fixedly mounted on the outer walls of the fourth connecting rods (23) located on both sides of the same second connecting block (1302).

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