A centrifuge with automatic correction of rotor position

Abstract

The application discloses a centrifugal machine capable of automatically correcting rotor position, comprising: a centrifugal box, a plurality of partitions are arranged transversely in the centrifugal box to divide the centrifugal box into a centrifugal cavity, a transmission cavity and a power cavity from top to bottom; a first driving motor and a second driving motor are arranged in the power cavity, a main shaft and a driving shaft are arranged at the output ends of the first driving motor and the second driving motor respectively, the main shaft and the driving shaft penetrate through the partition and extend into the centrifugal cavity; a correction disc and a control disc are rotatably arranged in the transmission cavity. The centrifugal machine cover is automatically opened by the motor, the manual operation step is avoided, and the centrifugal machine cover can also be manually opened when the centrifugal machine is suddenly powered off. The main shaft can be automatically locked when the centrifugal machine cover is opened, the rotating rotor can be urgently braked, so that the sudden situation can be coped with, and the position of the main shaft can be kept fixed when the rotor is replaced, so that the operation difficulty when the rotor is replaced is reduced.

Description

Technical Field

[0001] This invention relates to the field of centrifuge technology, and more particularly to a centrifuge capable of automatically correcting rotor position. Background Technology

[0002] A centrifuge is an instrument that uses the powerful centrifugal force generated by the high-speed rotation of the rotor to accelerate the sedimentation rate of particles in a liquid, separating substances with different sedimentation coefficients and buoyant densities in a sample. Centrifuges have a wide range of applications in the medical industry, mainly used in blood separation, DNA research / immunohistochemistry laboratories, testing laboratories, research laboratories, etc. They are ideal products for medical and biochemical laboratories for serum, plasma, and radioimmunoassay, and are essential equipment for blood banks, laboratories, blood stations, medical colleges and medical research institutions in various hospitals.

[0003] In existing centrifuges, the rotor position is usually not fixed after the centrifugation process is completed, which is inconvenient for robotic arms to pick up and put down. The development of an automatic positioning mechanism for centrifuges enables the transformation of traditional centrifuge motors into intelligent centrifuges and plays an important role in the development of medical automated testing equipment. Therefore, a centrifuge with automatic rotor position correction is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a centrifuge capable of automatically correcting the rotor position.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a centrifuge capable of automatically correcting rotor position, comprising:

[0006] The centrifuge is provided with multiple horizontal partitions inside to divide the centrifuge into a centrifugation chamber, a transmission chamber and a power chamber from top to bottom;

[0007] The power chamber is equipped with a first drive motor and a second drive motor. The output ends of the first drive motor and the second drive motor are respectively provided with a main shaft and a drive shaft that penetrate the partition and extend into the centrifugal chamber.

[0008] The transmission cavity is equipped with a calibration disk and a control disk that rotate within it.

[0009] The calibration disc has two sets of sliding grooves, and a calibration bevel gear is provided on the side of the two sets of sliding grooves away from the main shaft. A control component that can extend and retract with the rotation of the calibration bevel gear is movably provided inside the calibration bevel gear.

[0010] The control component is provided with a sliding component extending into the sliding groove, and an abutment component is provided on the side of the control component near the main shaft to abut against the main shaft;

[0011] The control disk is connected to the drive shaft. The bottom of the control disk is provided with a control bevel gear that meshes with the correction bevel gear. The second drive motor can drive the control disk to rotate, thereby causing the correction bevel gear to rotate and causing the abutment to move towards and away from the main shaft.

[0012] The power chamber is also equipped with a third drive motor for driving the calibration disk to rotate and having a shaft locking function. The third drive motor is used to drive the calibration disk to rotate to a designated position.

[0013] Furthermore, the drive shaft is provided with a centrifuge cover, which is eccentrically positioned on the drive shaft to cover the centrifuge chamber under the drive of the drive shaft.

[0014] Furthermore, a control panel is fixedly installed at the front end of the centrifuge.

[0015] Furthermore, the partition includes a second partition plate and a support plate;

[0016] The second partition plate is used to separate the transmission chamber from the centrifugal chamber;

[0017] The support plate is used to separate the transmission cavity from the power cavity.

[0018] Furthermore, the support plate is also used to support the rotation of the calibration disc;

[0019] The calibration plate has a mounting part on its outer side, which is a limiting ring. The support plate has a limiting groove corresponding to the limiting ring for rotatable connection with the support plate.

[0020] Furthermore, the centrifuge chamber is also provided with a first partition plate, which divides the centrifuge chamber into a centrifuge section for arranging centrifuge discs and a transmission section for arranging centrifuge cover transmission parts.

[0021] The main shaft is equipped with a centrifugal disc, which is used to mount the rotor.

[0022] Furthermore, the calibration disk and the control disk are respectively provided with a first passage and a second passage for the main shaft to pass through.

[0023] Furthermore, the calibration plate is also provided with a mounting plate for supporting the calibration bevel gears. The two calibration bevel gears are rotatably mounted on the mounting plate and pass through the mounting plate. The calibration bevel gears are provided with threaded holes inside. The control component is provided with external threads that are adapted to the threaded holes. The control component is used to extend and retract with the rotation direction of the calibration bevel gears.

[0024] The bottom of the calibration disk is provided with an internal gear ring, which meshes with the output end of the third drive motor.

[0025] Furthermore, the control disk is provided with a locking tooth on its outer side, and a section of the drive shaft located in the power cavity is provided with a control ratchet that meshes with the locking tooth of the control disk, so as to drive the control disk to rotate and cause the abutment to move toward or away from the main shaft.

[0026] The end of the mating part closest to the spindle is arc-shaped with the same curvature as the spindle.

[0027] Furthermore, magnetic elements are provided on the side of the two sets of sliding grooves near the main shaft, and the sliding elements are made of magnetic material to attract each other.

[0028] The beneficial effects of this invention are reflected in:

[0029] 1. This invention uses a motor to automatically open the centrifuge lid, eliminating the need for manual operation. The centrifuge lid can also be opened manually if the centrifuge suddenly loses power.

[0030] 2. This invention can automatically lock the main shaft when the centrifuge cover is opened, and can provide emergency braking for the rotating rotor to deal with emergencies. It can also keep the main shaft in a fixed position when changing the rotor, thereby reducing the difficulty of changing the rotor.

[0031] 3. This invention can move the positioning component to the main shaft position after the centrifuge cover is opened, and the rotor position can be corrected by the positioning motor to achieve the rotor positioning effect.

[0032] 4. This invention can reduce the inertia of the positioning motor during rotation by controlling the cooperation between the turntable and the positioning ratchet, thereby achieving a precise positioning effect. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall mechanism structure provided for the present invention.

[0034] Figure 2 This is a schematic diagram of the internal structure of the centrifuge provided by the present invention.

[0035] Figure 3 This is a front view of the internal structure of the centrifuge provided by the present invention.

[0036] Figure 4 This is a schematic diagram of the internal transmission structure of the centrifuge provided by the present invention.

[0037] Figure 5 An exploded view of the internal transmission structure of the centrifuge provided by the present invention.

[0038] Figure 6 This is a schematic diagram of the calibration disk structure from a first-view perspective, provided by the present invention.

[0039] Figure 7 This is a schematic diagram of the calibration disk structure from a second perspective, as provided by the present invention.

[0040] Figure 8 This is a schematic diagram of the control component structure provided by the present invention.

[0041] Figure 9 This is a schematic diagram of the control panel structure provided by the present invention.

[0042] Explanation of reference numerals in the attached figures:

[0043] In the diagram: 100, centrifuge; 101, control panel; 102, centrifuge cover; 103, centrifuge chamber; 104, first partition plate; 105, transmission chamber; 106, second partition plate; 107, power chamber; 108, support plate; 110, second drive motor; 111, drive shaft; 112, control ratchet; 120, first drive motor; 121, main shaft; 122, centrifuge disc; 130, calibration disc; 131, mounting part; 132, first passage part; 133, magnetic component; 134, sliding groove; 135, mounting plate; 136, calibration bevel gear; 137, threaded hole; 138, internal gear ring; 139, third drive motor; 140, control component; 141, sliding component; 142, abutment component; 150, control disc; 151, control bevel gear; 152, second passage part. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figure 1-9 This invention discloses a centrifuge capable of automatically correcting rotor position, comprising:

[0046] Centrifuge 100, wherein multiple partitions are provided horizontally inside the centrifuge 100 to divide the centrifuge 100 from top to bottom into centrifuge chamber 103, transmission chamber 105 and power chamber 107, wherein the centrifuge chamber 103 is used to install the rotor and to install centrifuge tubes through the rotor, the transmission chamber 105 is used to accommodate the transmission part of the overall mechanism, and the power chamber 107 is used to install the power part of the overall mechanism;

[0047] The power chamber 107 is equipped with a first drive motor 120 and a second drive motor 110. The output ends of the first drive motor 120 and the second drive motor 110 are respectively provided with a main shaft 121 and a drive shaft 111 that penetrate the partition and extend into the centrifugal chamber 103. The first drive motor 120 is used to drive the rotor and the centrifugal tubes installed on it to perform centrifugal motion, while the second drive motor 110 is used to drive and then use the subsequent components to clamp the main shaft 121 to achieve locking and braking.

[0048] The transmission cavity 105 is rotatably provided with a correction disk 130 and a control disk 150 sleeved on the outside of the main shaft 121 and coaxial with the main shaft 121. It should be noted that the correction disk 130 and the control disk 150 are respectively provided with a first passage part 132 and a second passage part 152 for the main shaft 121 to pass through.

[0049] like Figure 6 As shown, the calibration disk 130 has two sets of sliding grooves 134 symmetrically distributed around the main shaft 121. A magnetic element 133 is provided on the side of the two sets of sliding grooves 134 closer to the main shaft 121, and a calibration bevel gear 136 is provided on the side of the two sets of sliding grooves 134 away from the main shaft 121. A control element 140 that can extend and retract with the rotation of the calibration bevel gear 136 is movably provided in the calibration bevel gear 136.

[0050] like Figure 8 As shown, the control component 140 is provided with a sliding component 141 extending into the sliding groove 134. The sliding component 141 is made of magnetic material to attract the magnetic component 133. The control component 140 is provided with an abutment 142 on the side near the main shaft 121. The end of the abutment 142 near the main shaft 121 is arc-shaped to abut against the main shaft 121 to achieve clamping and locking.

[0051] The control panel 150 is connected to the drive shaft 111, and the bottom of the control panel 150 is provided with a control bevel gear 151 that meshes with the correction bevel gear 136. Figure 9 As shown, the second drive motor 110 is used to drive the sliding member 141 to attract the magnetic member 133 and make the abutting member 142 abut against the main shaft 121.

[0052] like Figure 7 As shown, the bottom of the calibration disk 130 is provided with an internal gear ring 138, and the power cavity 107 is also provided with a third drive motor 139 that meshes with the internal gear ring 138 and has a shaft locking function. The third drive motor 139 is used to drive the calibration disk 130 to rotate to a designated position.

[0053] When the rotor needs to be replaced, this application controls the third drive motor 139 to lock the shaft, and controls the drive shaft 111 to rotate through the second drive motor 110, thereby causing the centrifuge cover 102 to rotate and open. At the same time, it drives the control ratchet 112 to rotate, thereby driving the control disk 150 to rotate. This drives the two control components 140 to move towards the main shaft 121 through the control bevel gear 151, until the abutment component 142 is in contact with the main shaft 121. At the same time, the magnetic component 133 is in contact with the sliding component 141 to lock the main shaft 121, thereby solving the problem of inconvenient installation and disassembly caused by the rotation of the main shaft 121 when replacing the rotor.

[0054] When the rotor needs to be corrected in position: after the above steps, the control unit 138 is driven to rotate by the third drive motor 139, thereby controlling the rotation of the correction disk 130. Due to the magnetic attraction between the magnetic component 133 and the sliding component 141, the correction disk 130, the control component 140, and the control disk 150 will all rotate around the main shaft 121. When the control disk 150 rotates, it will not drive the rotation of the control ratchet 112 until the main shaft 121 is moved to the designated position, thereby solving the problem of the randomness of the rotor's stopping position.

[0055] like Figure 1 As shown, a centrifuge cover 102 is provided on the drive shaft 111. The centrifuge cover 102 is eccentrically disposed on the drive shaft 111 and is used to cover the centrifuge chamber 103 under the drive of the drive shaft 111.

[0056] In this embodiment, a control panel 101 is fixedly installed at the front end of the centrifuge 100 for operators to set parameters such as centrifugation speed and centrifugation time. The control panel 101 is equipped with a controller and a power supply, and the control panel 101 controls the operation of each motor through the controller.

[0057] like Figure 2 As shown, the partition includes a second partition plate 106 and a support plate 108;

[0058] The second partition plate 106 is used to separate the transmission cavity 105 from the centrifugal cavity 103;

[0059] The support plate 108 is used to separate the transmission cavity 105 and the power cavity 107.

[0060] Furthermore, the support plate 108 is also used to support the rotation of the calibration disk 130;

[0061] The calibration plate 130 has a mounting part 131 on its outer side. The mounting part 131 is a limiting ring. The support plate 108 has a limiting groove corresponding to the limiting ring, which is used to rotatably connect with the support plate 108.

[0062] Furthermore, the centrifuge chamber 103 is also provided with a first partition plate 104, which divides the centrifuge chamber 103 into a centrifuge section for the centrifuge disc 122 to be placed and a transmission section for the transmission section of the centrifuge cover 102 to be placed.

[0063] The main shaft 121 is provided with a centrifugal disk 122, which is used to mount the rotor.

[0064] It should be noted that the above-mentioned partition is designed to enable the internal mechanisms of the equipment in this application to operate independently, avoiding mutual interference and deviation.

[0065] like Figure 9 As shown, the control disk 150 has a locking tooth on its outer side, and the drive shaft 111 has a control ratchet 112 that meshes with the locking tooth of the control disk 150 in one section of the power chamber 107, which is used to drive the control disk 150 to rotate and to move the abutment 142 toward or away from the main shaft 121.

[0066] like Figure 6 As shown, the calibration disc 130 is also provided with a mounting plate 135 for supporting the calibration bevel gears 136. The two calibration bevel gears 136 are rotatably mounted on the mounting plate 135 and pass through the mounting plate 135. The calibration bevel gears 136 have threaded holes 137 inside. The control member 140 has external threads that are adapted to the threaded holes 137. The control member 140 is used to extend and retract with the rotation direction of the calibration bevel gears 136.

[0067] With the above structural configuration, when the control disk 150 rotates, the control bevel gear 151 at the bottom of the control disk 150 can drive the correction bevel gear 136 to rotate. Since the correction bevel gear 136 has a threaded hole 137 that meshes with the external thread of the control member 140, and the control member 140 is also limited by the sliding member 141, the control member 140 can extend and retract according to the rotation of the control disk 150.

[0068] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0069] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0070] Additionally, "multiple" refers to two or more.

[0071] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A centrifuge capable of automatically correcting rotor position, characterized in that, include: Centrifuge (100), wherein multiple partitions are provided horizontally inside the centrifuge (100) to divide the centrifuge (100) into a centrifuge chamber (103), a transmission chamber (105) and a power chamber (107) from top to bottom; The power chamber (107) is equipped with a first drive motor (120) and a second drive motor (110). The output ends of the first drive motor (120) and the second drive motor (110) are respectively provided with a main shaft (121) and a drive shaft (111) that penetrate the partition and extend into the centrifugal chamber (103). The transmission cavity (105) is rotatably equipped with a calibration disk (130) and a control disk (150); The calibration disc (130) has two sets of sliding grooves (134), and a calibration bevel gear (136) is provided on the side of the two sets of sliding grooves (134) away from the main shaft (121). A control component (140) that can extend and retract with the rotation of the calibration bevel gear (136) is movably provided in the calibration bevel gear (136). The control component (140) is provided with a sliding component (141) extending into the sliding groove (134), and an abutment (142) is provided on the side of the control component (140) near the main shaft (121) to abut against the main shaft (121); The control disk (150) is connected to the drive shaft (111) for transmission. The bottom of the control disk (150) is provided with a control bevel gear (151) that meshes with the correction bevel gear (136). The second drive motor (110) can drive the control disk (150) to rotate, thereby causing the correction bevel gear (136) to rotate, and causing the abutment (142) to move towards and away from the main shaft (121). The power chamber (107) is also equipped with a third drive motor (139) for driving the calibration disk (130) to rotate and having a shaft locking function. The third drive motor (139) is used to drive the calibration disk (130) to rotate to a designated position.

2. The centrifuge with automatic rotor position correction according to claim 1, characterized in that: The drive shaft (111) is provided with a centrifuge cover (102), which is eccentrically disposed on the drive shaft (111) to cover the centrifuge chamber (103) under the drive of the drive shaft (111).

3. The centrifuge with automatic rotor position correction according to claim 1, characterized in that: A control panel (101) is fixedly installed at the front end of the centrifuge (100).

4. A centrifuge capable of automatically correcting rotor position according to claim 1, characterized in that: The partition includes a second partition plate (106) and a support plate (108); The second partition plate (106) is used to separate the transmission chamber (105) from the centrifugal chamber (103); The support plate (108) is used to separate the transmission cavity (105) from the power cavity (107).

5. A centrifuge capable of automatically correcting rotor position according to claim 4, characterized in that: The support plate (108) is also used to support the rotation of the calibration disk (130); The calibration plate (130) has an installation part (131) on its outer side. The installation part (131) is a limiting ring. The support plate (108) has a limiting groove corresponding to the limiting ring, which is used to rotatably connect with the support plate (108).

6. A centrifuge capable of automatically correcting rotor position according to claim 1, characterized in that: The centrifuge chamber (103) is also provided with a first partition plate (104), which divides the centrifuge chamber (103) into a centrifuge section for the centrifuge disc (122) to be placed and a transmission section for the transmission part of the centrifuge cover (102) to be placed. The main shaft (121) is provided with a centrifugal disc (122), which is used to mount the rotor.

7. A centrifuge capable of automatically correcting rotor position according to claim 1, characterized in that: The calibration disk (130) and the control disk (150) are respectively provided with a first passage (132) and a second passage (152) for the spindle (121) to pass through.

8. A centrifuge capable of automatically correcting rotor position according to claim 1, characterized in that: The calibration disc (130) is also provided with a mounting plate (135) for supporting the calibration bevel gears (136). The two calibration bevel gears (136) are rotatably mounted on the mounting plate (135) and pass through the mounting plate (135). The calibration bevel gears (136) are provided with threaded holes (137) inside. The control member (140) is provided with external threads that are adapted to the threaded holes (137). The control member (140) is used to extend and retract with the rotation direction of the calibration bevel gears (136). The bottom of the calibration disk (130) is provided with an internal gear ring (138), which meshes with the output end of the third drive motor (139).

9. A centrifuge capable of automatically correcting rotor position according to claim 1, characterized in that: The control disk (150) has a locking tooth on the outside, and the drive shaft (111) located in the power cavity (107) has a control ratchet (112) that meshes with the locking tooth of the control disk (150) to drive the control disk (150) to rotate and to make the abutment (142) move closer to or further away from the main shaft (121). The end of the mating part (142) near the main shaft (121) is arc-shaped with the same curvature as the main shaft (121).

10. A centrifuge capable of automatically correcting rotor position according to claim 1, characterized in that: The two sets of sliding grooves (134) are provided with magnetic components (133) on the side near the main shaft (121), and the sliding components (141) are made of magnetic material to attract the magnetic components (133).

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