Structure capable of automatically locking rotor of centrifugal machine

Abstract

The utility model relates to the related technical field of centrifuge rotor structures, in particular to a structure capable of automatically locking a centrifuge rotor, which comprises a rotating shaft and a rotor, a mounting sleeve is mounted at the top end of the rotating shaft through a first fixing bolt, a first embedding groove is arranged in the center of the bottom end of the rotor, and when the rotor is mounted, the mounting sleeve is inserted into the first embedding groove; a plurality of movable grooves are evenly distributed in the circumference of the inner top face of the first embedding groove, locking blocks are arranged in the movable grooves, and a plurality of locking grooves matched with the locking blocks are evenly distributed in the circumference of the top end of the mounting sleeve. And the locking block is driven to move through centrifugal force, so that the locking block can lock the locking groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifuge rotor structure related technical field, specifically a kind of structure of centrifuge rotor that can be automatically locked. BACKGROUND

[0002] Laboratory often needs to centrifuge the substance in test tube, this process generally uses centrifuge, and the rotor of centrifuge is the platform for carrying test tube, and several tube holes are opened on the top surface of the platform, and test tube can be inserted into tube hole before centrifugation. In order to fix test tube fully and effectively, prevent test tube from falling off or throwing out during centrifugation, tube hole needs to be reasonably matched with the outer diameter and length of test tube, and since test tubes of different models have many different diameters and lengths, several replaceable rotors are designed correspondingly, and each rotor has different parameters of tube hole. Before use, the model of rotor needs to be confirmed according to the model of test tube used, so the rotor needs to be replaced frequently.

[0003] The output shaft of the existing rotor and motor is generally connected by auxiliary fixing components such as bolts or spring collets, and complicated disassembly and installation operations are required every time the rotor is replaced, and frequent disassembly operations will inevitably cause mechanical wear of the rotor and output shaft, thereby reducing the fixing performance of the fixing components and the matching precision of the connection, which may affect the transmission performance between the output shaft and the rotor, or even cause damage to the rotor or the output shaft, and even accidents, so the technical personnel in the field propose a structure of centrifuge rotor that can be automatically locked to solve the problems in the above background. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a structure of centrifuge rotor that can be automatically locked to solve the problems in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A structure of centrifuge rotor that can be automatically locked, comprising a rotating shaft and a rotor, a threaded sleeve is arranged at the top end of the rotating shaft, an installation sleeve is installed at the top end of the rotating shaft, a cylindrical hole is arranged at the top of the installation sleeve, a first fixing bolt is installed in the cylindrical hole, the bottom of the first fixing bolt is installed into the threaded sleeve, a first embedding groove is arranged at the central bottom end of the rotor, the inner circumference size of the first embedding groove corresponds to the outer circumference size of the installation sleeve, a plurality of movable grooves are uniformly distributed on the inner top surface of the first embedding groove, a locking block is arranged in the movable groove, a plurality of locking grooves matched with the locking block are uniformly distributed on the peripheral circumference of the top end of the installation sleeve outside the cylindrical hole, and the number and position of the locking grooves correspond to the locking block.

[0007] As a further scheme of the utility model: the both sides of the top of the rotating shaft are provided with positioning plates, and the inner wall of the mounting sleeve is provided with positioning grooves matched with the positioning plates.

[0008] As a further scheme of the utility model: the inner cavity of the movable groove is horizontally connected with a sliding rod at the top, the top of the locking block is connected with the sliding rod in a penetrating and matching mode, the bottom outer wall of the locking block is provided with a protruding block, and the inner wall of the bottom of the locking groove away from the side of the cylindrical hole is provided with a groove matched with the protruding block.

[0009] As a further scheme of the utility model: the top of the rotor is uniformly provided with a plurality of cylindrical grooves, and the cylindrical grooves are detachably provided with mounting columns, and the top of the mounting column is provided with a placing groove.

[0010] As a further scheme of the utility model: the top of the cylindrical groove is provided with a circular groove, the top edge of the mounting column is connected with a mounting disc, and the mounting disc is mounted in the circular groove through a second fixing bolt.

[0011] The utility model has the advantages that: the mounting sleeve is mounted at the top of the rotating shaft, and then the rotor is mounted on the mounting sleeve, so that the rotor is not directly mounted on the rotating shaft, the rotor is not damaged during dismounting, the rotating shaft is mounted on the mounting sleeve in a sleeving mode, then the rotor is automatically locked on the mounting sleeve through the cooperation of the locking block and the locking groove, when the rotating shaft drives the mounting sleeve and the rotor to rotate, the locking block is matched with the locking groove under the action of centrifugal force, so that the locking block does not separate from the locking groove, thereby ensuring the mounting stability of the rotor, the overall rotor structure is simple in structure and convenient to dismount, and has stronger practicability. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the overall internal structure front view of the utility model embodiment.

[0013] Figure 2 It is the cooperation plan view of the rotating shaft and the mounting sleeve in the utility model embodiment.

[0014] Figure 3 It is the structure schematic view of the locking block and the sliding rod in the utility model embodiment.

[0015] In the drawing: 1, rotating shaft; 2, rotor; 3, mounting sleeve; 4, threaded sleeve; 5, positioning plate; 6, positioning groove; 7, cylindrical hole; 8, first embedding groove; 9, first fixing bolt; 10, second embedding groove; 11, movable groove; 12, locking groove; 13, groove; 14, sliding rod; 15, locking block; 16, protruding block; 17, cylindrical groove; 18, mounting column; 19, circular groove; 20, mounting disc; 21, second fixing bolt; 22, placing groove. DETAILED DESCRIPTION

[0016] The technical scheme of the utility model will be explained in further detail in connection with the specific embodiments.

[0017] Embodiment one: please refer to Figures 1 to 3 A structure capable of automatically locking a rotor of a centrifuge, comprising a rotating shaft 1 and a rotor 2, a threaded sleeve 4 is arranged at the top end of the rotating shaft 1, an installation sleeve 3 is installed at the top end of the rotating shaft 1, a cylindrical hole 7 is arranged at the top center of the installation sleeve 3, a first fixing bolt 9 is installed in the cylindrical hole 7, the bottom of the first fixing bolt 9 is installed into the threaded sleeve 4, a first embedded groove 8 is arranged at the bottom center of the rotor 2, the inner circumferential dimension of the first embedded groove 8 corresponds to the outer circumferential dimension of the installation sleeve 3, a plurality of movable grooves 11 are uniformly arranged on the inner top surface of the first embedded groove 8, a locking block 15 is arranged in the movable groove 11, a plurality of locking grooves 12 that cooperate with the locking block 15 are uniformly arranged on the outer circumferential of the top end of the installation sleeve 3 outside the cylindrical hole 7, the number and arrangement position of the locking grooves 12 correspond to the locking block 15, and a second embedded groove 10 for accommodating the top end of the first fixing bolt 9 is arranged at the inner bottom surface of the first embedded groove 8.

[0018] Please refer to Figure 1 , Figure 2 The two sides of the top of the rotating shaft 1 are provided with positioning plates 5, the inner walls of the installation sleeve 3 are provided with positioning grooves 6 that cooperate with the positioning plates 5, after the installation sleeve 3 is installed at the top end of the rotating shaft 1, the positioning plates 5 are inserted into the positioning grooves 6, and when the rotating shaft 1 rotates, the installation sleeve 3 is driven to rotate by the positioning plates 5.

[0019] Please refer to Figure 1 , Figure 3 The inner cavity of the movable groove 11 is transversely connected with a sliding rod 14, the top of the locking block 15 is connected with the sliding rod 14 in a penetrating and cooperative manner, the bottom outer side wall of the locking block 15 is provided with a protruding block 16, the inner wall of the bottom of the locking groove 12 away from the cylindrical hole 7 is provided with a recess 13 that cooperates with the protruding block 16, and when the rotating shaft 1 drives the installation sleeve 3 and the rotor 2 to rotate, the locking block 15 drives the protruding block 16 to move and be inserted into the recess 13.

[0020] Embodiment two: please refer to Figure 1 On the basis of embodiment one, a plurality of cylindrical grooves 17 are uniformly arranged on the top circumferential of the rotor 2, installation columns 18 are detachably installed in the cylindrical grooves 17, the top of the installation column 18 is provided with a placing groove 22, the placing groove 22 is arranged in an inclined manner, and the placing groove 22 is used for placing test tubes or containers used in centrifugal tests.

[0021] Please refer to Figure 1 The top end of the cylindrical groove 17 is provided with a circular ring groove 19, and the top end edge of the mounting column 18 is connected with a mounting disc 20, which is mounted in the circular ring groove 19 through a second fixing bolt 21.

[0022] Working principle: in use, the mounting sleeve 3 is sleeved on the top end of the rotating shaft 1, the mounting sleeve 3 is fixed through the first fixing bolt 9, the two locking blocks 15 are close to each other, the rotor 2 is installed on the mounting sleeve 3, the mounting sleeve 3 is inserted into the first embedding groove 8, the bottom of the locking block 15 is inserted into the locking groove 12, when the rotating shaft 1 drives the mounting sleeve 3 and the rotor 2 to rotate, the locking block 15 is driven to slide on the slide rod 14 through centrifugal force, and the locking block 15 moves away from the rotating shaft 1, and then the protrusion 16 is inserted into the groove 13, so that the rotor 2 is locked, the locking block 15 is made of metal material, when the rotor 2 needs to be disassembled, the locking block 15 is pulled through the magnet arranged on the top end of the rotor 2, the protrusion 16 on the locking block 15 is pulled out of the groove 13, and the rotor 2 can be moved upward and removed.

[0023] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and range of equivalents of the elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0024] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A structure capable of automatically locking a rotor of a centrifuge, comprising a rotating shaft and a rotor, characterized by, The top end of the rotating shaft is provided with a threaded sleeve, the top end of the rotating shaft is provided with a mounting sleeve, the top of the mounting sleeve is provided with a cylindrical hole, a first fixing bolt is mounted in the cylindrical hole, the bottom of the first fixing bolt is mounted into the threaded sleeve, the bottom end of the rotor is provided with a first embedding groove, the inner circumference of the first embedding groove corresponds to the outer circumference of the mounting sleeve, the inner top surface of the first embedding groove is uniformly distributed with a plurality of movable grooves, the movable grooves are provided with locking blocks, the top end of the mounting sleeve is uniformly distributed with a plurality of locking grooves on the outer circumferential surface of the cylindrical hole, the locking grooves are matched with the locking blocks, and the number and positions of the locking grooves correspond to the locking blocks.

2. A structure for automatically locking the rotor of a centrifuge according to claim 1, wherein The top of the rotating shaft is provided with positioning plates on both sides, and the inner wall of the mounting sleeve is provided with positioning grooves matched with the positioning plates.

3. A structure for automatically locking the rotor of a centrifuge according to claim 2, wherein The inner cavity of the movable groove is transversely connected with a sliding rod, the top of the locking block is penetratingly matched with the sliding rod, the bottom end of the locking block is provided with a protruding block on the outer side wall, and the bottom of the locking groove is provided with a recess matched with the protruding block on the inner wall of the side away from the cylindrical hole.

4. The structure of claim 1, wherein The top end of the rotor is uniformly distributed with a plurality of cylindrical grooves, the mounting column is detachably mounted in the cylindrical groove, and the top of the mounting column is provided with a placing groove.

5. A structure for automatically locking the rotor of a centrifuge according to claim 4, wherein The top end of the cylindrical groove is provided with a circular groove, the top edge of the mounting column is connected with a mounting disc, and the mounting disc is mounted in the circular groove through a second fixing bolt.

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