Centrifugal machine

Abstract

A centrifugal machine comprises a rotor, a motor and a loading and unloading device. The upper part of a rotating shaft of the motor is provided with an inverted buckling part, the lower part of the rotating shaft is provided with a connecting part embedded into the rotor, the inverted buckling part is connected with the sliding buckle assembly, and the bottom of the rotor is provided with a first connecting hole matched with the connecting part in shape; the assembling and disassembling device comprises a pressing assembly and a sliding buckle assembly. The pressing assembly comprises a pressing piece; the top of the pressing piece extends out of the central screw in the middle of the rotor, and the lower part of the pressing piece is embedded into the slide fastener assembly to open or close the slide fastener assembly; and when the slide fastener assembly is closed, the inverted buckling part of the rotating shaft is locked. According to the utility model, the rotating shaft of the motor and the rotor as well as the rotor and the rotor cover are locked or unlocked through the loading and unloading device, which is very convenient, and the loading and unloading between the motor and the rotor as well as between the rotor and the rotor cover can be quickly realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a centrifuge, especially a centrifuge with rotors and motors and rotors and rotor covers capable of being quickly assembled and disassembled. BACKGROUND

[0002] Centrifuges are essential instruments and equipment in the medical, biological, chemical, scientific research, teaching and other industries.

[0003] The core of the instrument is the "rotor and motor", and the motor drives the rotor to rotate during instrument operation, thereby generating centrifugal force, and the sample placed in the rotor is separated under the action of the centrifugal force.

[0004] The current centrifuge industry products generally have design defects, especially the problems of centrifuge rotor and motor connection and rotor cover and rotor connection. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a centrifuge capable of being quickly assembled and disassembled.

[0006] To solve the above technical problems, the technical scheme provided by the utility model is as follows: a centrifuge comprising a rotor, a motor and an assembling and disassembling device; the upper part of the rotating shaft of the motor is provided with a reverse buckle part, the lower part of the rotating shaft is provided with a connecting part embedded into the rotor, the reverse buckle part is connected with a slide buckle assembly, and the bottom of the rotor is provided with a first connecting hole matched with the shape of the connecting part; the assembling and disassembling device comprises a pressing assembly and a slide buckle assembly; the pressing assembly comprises a pressing piece; the top of the pressing piece protrudes from the center screw in the middle part of the rotor, the lower part of the pressing piece is embedded into the slide buckle assembly so that the slide buckle assembly is opened or closed; and the reverse buckle part of the rotating shaft is locked when the slide buckle assembly is closed.

[0007] Preferably, the pressing piece comprises a top rod, an intermediate block and an insertion plate, the top rod is connected to the intermediate block and protrudes from the center screw, the upper part of the insertion plate is fixedly connected to the intermediate block, and the lower part is arranged on the slide buckle assembly; and the top rod and the insertion plate are arranged on the upper and lower sides of the intermediate block, respectively.

[0008] Preferably, the rotor is provided with a center screw, and the top rod protrudes from the center hole of the center screw.

[0009] Preferably, two insertion plates are symmetrically arranged on the intermediate block.

[0010] The centrifugal machine, preferably, the sliding buckle assembly comprises a sliding block, a sliding block spring and a connecting base; the connecting base is arranged at the bottom of the central screw and connected with the central screw; the two sides of the connecting base are both connected with a sliding block through a sliding block spring, and the two sliding blocks are oppositely arranged; the lower part of the pressing piece is arranged between the two sliding blocks.

[0011] The centrifugal machine, preferably, the sliding block and the connecting base are provided with a transverse limiting column of the sliding block spring; one end of the sliding block spring is connected with the sliding block, and the other end is sleeved on the transverse limiting column and abuts against the inner wall of the connecting base.

[0012] The centrifugal machine, preferably, one end of the transverse limiting column is opposite to the sliding block, and the other end penetrates through the connecting base and is connected with the central screw.

[0013] The centrifugal machine, preferably, the connecting base is provided with a connecting base cover plate, and the connecting base cover plate is provided with a through hole through which the pressing piece penetrates.

[0014] The centrifugal machine, preferably, the middle part of the connecting base cover plate is provided with an upper limiting column, a pressing spring is sleeved on the upper limiting column, and the upper end of the pressing spring abuts against the pressing piece and the lower end abuts against the connecting base cover plate.

[0015] The centrifugal machine, preferably, the cross section of the connecting part is quadrangular, elliptical or triangular.

[0016] The centrifugal machine, preferably, the upper part of the central screw is provided with a reverse buckling step for buckling the rotor cover, and a stop ring is arranged below the reverse buckling step; the rotor cover is provided with a connecting step corresponding to the reverse buckling step.

[0017] Compared with the prior art, the utility model has the advantages that: in the utility model, the rotating shaft of the motor and the rotor and the rotor and the rotor cover are locked or opened through the mounting and dismounting device, which is very convenient and can quickly realize the mounting and dismounting of the motor and the rotor and the rotor and the rotor cover. When the motor and the rotor and the rotor and the rotor cover are locked, only the reverse buckling part of the rotating shaft is pressed into the sliding buckle assembly by pressing the pressing piece, so that the sliding block assembly locks the reverse buckling part, thereby quickly locking the first connecting hole at the bottom of the rotor and the connecting part at the lower part of the rotating shaft, when the sliding block locks the reverse buckling part, the central screw drives the rotor cover and the rotor to be quickly locked; when opening, only the reverse buckling part of the rotating shaft is separated from the sliding buckle assembly by pressing the pressing piece, so that the quick separation of the rotor and the rotating shaft is realized, and the central screw is not limited by the rotating shaft, so that the rotor cover can be quickly separated from the rotor. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the centrifugal machine in example 1.

[0019] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the middle line AA.

[0020] Figure 3 Schematic diagram of the cross-sectional three-dimensional structure of the centrifuge in Example 1.

[0021] Figure 4 Schematic diagram of the structure of the rotor in Example 1.

[0022] Figure 5 Schematic diagram of the structure of the motor in Example 1.

[0023] Figure 6 This is a structural diagram of the pressing member in Example 1.

[0024] Figure 7 Schematic diagram of the structure of the central screw in Example 1.

[0025] Figure 8 This is a structural diagram of the connecting seat cover in Example 1.

[0026] Figure 9 This is a structural diagram of the connecting socket in Example 1.

[0027] Legend

[0028] 1. Rotor; 11. First connecting hole; 12. Second connecting hole; 2. Motor; 21. Rotating shaft; 211. Undercut portion; 212. Connecting portion; 213. Conical portion; 3. Loading and unloading device; 31. Pressing assembly; 311. Pressing part; 3111. Push rod; 3112. Intermediate block; 3113. Insert plate; 3114. Lower limit post; 312. Pressing spring; 32. Slider assembly; 321. Slider; 322. Slider spring; 323. Connecting seat; 324. Connecting seat cover; 3241. Upper limit post; 3242. Through hole; 4. Center screw; 41. Center hole; 42. Undercut step; 43. Retaining ring; 5. Rotor cover; 51. Connecting step. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described in more comprehensive and detailed manner below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0030] It should be noted that when an element is described as being "fixed, fixed, connected or communicated with" another element, it can be directly fixed, fixed, connected or communicated with the other element, or it can be indirectly fixed, fixed, connected or communicated with the other element through other intermediate connectors.

[0031] Unless otherwise defined, all technical terms used hereinafter have the same meanings as those generally understood by those skilled in the art. The technical terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention. Example

[0032] like Figures 1-3 The centrifuge shown in FIG. 1 includes a rotor 1, a motor 2, a rotor cover 5, and a loading and unloading device 3; Figure 5 As shown, the upper portion of the rotating shaft 21 of the motor 2 is provided with an undercut portion 211, and the lower portion of the rotating shaft 21 is provided with a connecting portion 212 embedded in the rotor 1, and the undercut portion 211 is connected to the sliding buckle assembly 32. Figure 4 As shown, the bottom of the rotor 1 is provided with a first connection hole 11 that matches the shape of the connection portion 212. The assembly and removal device 3 includes a pressing assembly 31 and a sliding buckle assembly 32. The pressing assembly 31 includes a pressing member 311. The top of the pressing member 311 extends from the central screw 4 in the middle of the rotor 1, and the lower portion of the pressing member 311 is embedded in the sliding buckle assembly 32, allowing the sliding buckle assembly 32 to open or close. When closed, the sliding buckle assembly 32 locks the undercut portion 211 of the rotating shaft 21. The central screw 4 and the rotor 1 are connected by a threaded connection. In this embodiment, when the sliding buckle assembly 32 engages the undercut portion 211, the connection portion 212 is confined within the first connection hole 11, thereby completing the connection between the rotating shaft 21 and the rotor 1. In this embodiment, the rotating shaft is provided with a conical surface portion 213 below the connection portion. A second connection hole 12 is provided on the outer side of the first connection hole 11 at the bottom of the rotor 1, matching the conical surface of the conical surface portion 213. In this embodiment, the cross-sectional shape of the connecting portion 212 may be other shapes besides a circle, such as a quadrilateral, an ellipse, or a triangle.

[0033] In this embodiment, the upper portion of the center screw 4 is provided with an undercut step 42 that engages the rotor cover, and a retaining ring 43 is provided below the undercut step 42. The rotor cover 5 is provided with a connecting step 51 corresponding to the undercut step 32. In this embodiment, when the rotor cover 5 needs to be connected to the rotor 1, the sliding buckle assembly 32 connected to the lower portion of the center screw 4 is locked with the rotating shaft 21, and the undercut step 42 on the upper portion of the center screw 4 engages the connecting step 51 of the rotor cover 5, thereby completing the connection between the rotor cover 5 and the rotor 1. When the rotor cover 5 needs to be opened, the sliding buckle assembly 32 at the bottom of the center screw 4 is separated from the rotating shaft 21, the center screw 4 is removed, and the retaining ring 43 on the center screw 4 allows the rotor cover 5 to be opened from the rotor 1. In this embodiment, the connection between the rotor cover 5 and the rotor 1 is actually a linkage between the rotor 1 and the rotating shaft 21 of the motor, making operation very convenient.

[0034] In this embodiment, if Figure 6As shown, the pressing piece 311 comprises a top rod 3111, an intermediate block 3112 and an insertion plate 3113. The top rod 3111 is connected to the intermediate block 3112 and extends out of the central screw 1. The rotor 1 is provided with a central screw 4, and the top rod 3111 extends out of the central hole 41 of the central screw 4. A structural schematic diagram of the central screw 4 is as shown in Figure 7 As shown, the upper part of the insertion plate 3113 is fixedly connected to the intermediate block 3112, and the lower part is arranged on the sliding buckle assembly 32. The insertion plate 3113 is arranged in a V shape or a U shape. The top rod 3111 and the insertion plate 3113 are arranged on the upper side and the lower side of the intermediate block 3112, respectively. Two insertion plates 3113 are symmetrically arranged on the intermediate block 3112.

[0035] In the embodiment, the sliding buckle assembly 32 comprises a sliding block 321, a sliding block spring 322 and a connecting seat 323. The connecting seat 323 is arranged at the bottom of the central screw 4 and connected to the central screw 4. Two sliding blocks 321 are connected to the connecting seat 323 through the sliding block spring 322 on both sides of the connecting seat 323. The insertion plate 3113 of the pressing piece 311 is arranged between the two sliding blocks 321. A transverse limiting column (not shown in the figure) of the sliding block spring 322 is arranged between the sliding block 321 and the connecting seat 323. One end of the sliding block spring 322 is connected to the sliding block 321, and the other end is sleeved on the transverse limiting column and abuts against the inner wall of the connecting seat 323. One end of the transverse limiting column is opposite to the sliding block 321, and the other end penetrates through the connecting seat 323 and is connected to the central screw 4. A structural schematic diagram of the connecting seat 323 is as shown in Figure 9

[0036] In the embodiment, when the pressing piece 311 is pressed, the insertion plate 3113 pushes the two sliding blocks 321 apart from each other, so that the sliding buckle assembly 32 is opened. At this time, the reverse buckle part 211 on the rotating shaft 21 can be taken out from the sliding buckle assembly 32. When the pressing piece 311 is released, the pressing piece 311 is reset, and the sliding block 321 is reset under the action of the sliding block spring 322. After the rotating shaft 21 is connected to the rotor 1, the reverse buckle part 211 of the rotor 1 is pushed into the two sliding blocks 321, so that the two sliding blocks 321 buckle the reverse buckle part 211.

[0037] In the embodiment, the connecting seat 323 is provided with a connecting seat cover plate 324, and the connecting seat cover plate 324 is provided with a through hole 3242 through which the pressing piece 311 penetrates. A structural schematic diagram of the connecting seat cover plate 324 is as shown in Figure 8 ​The middle part of the connecting seat cover plate 324 is provided with an upper limiting column 3241, the bottom of the middle block 3112 is provided with a lower limiting column 3114, the upper part of the pressing spring 312 is sleeved on the upper limiting column 3241, the lower end of the pressing spring 312 is sleeved on the upper limiting column 3241 and abuts against the connecting seat cover plate 324. In the embodiment, the connecting seat cover plate 324 is arranged so that the pressing spring 312 has a set position, after the pressing piece 311 is pressed, the pressing piece 311 can be reset under the action of the pressing spring 312.

[0038] In the embodiment, the rotation shaft 21 of the motor 2 and the rotor 1 and the rotor 1 and the rotor cover 5 are locked or opened through the detachable device 3, which is very convenient and can quickly realize the assembly and disassembly of the motor 2 and the rotor 1 and the rotor 1 and the rotor cover 5. When the motor 2 and the rotor 1 and the rotor 1 and the rotor cover 5 are locked, only the pressing piece 311 needs to be pressed so that the reverse buckle part 211 of the rotation shaft 21 is pressed into the slide buckle assembly, so that the slide block assembly locks the reverse buckle part 211, thereby quickly locking the first connecting hole 11 at the bottom of the rotor 1 and the connecting part 212 at the lower part of the rotation shaft 21, when the slide block 321 locks the reverse buckle part, the central screw rod 4 drives the rotor cover 5 and the rotor 1 to be quickly locked; when being opened, only the pressing piece 311 needs to be pressed so that the slide buckle assembly 32 and the reverse buckle part 211 at the upper part of the rotation shaft are separated, so that the quick separation of the rotor 1 and the rotation shaft 21 is realized, at the same time, the central screw rod 4 is not limited by the rotation shaft 21, and the rotor cover 5 can be quickly separated from the rotor 1.

Claims

1. A centrifuge, characterized by: The utility model provides a rotator, motor and loading and unloading device, the upper portion of the rotating shaft of the motor is provided with a reverse buckle part, the lower portion of the rotating shaft is provided with a connecting part embedded into the rotator, the reverse buckle part is connected with a slide buckle assembly, the bottom of the rotator is provided with a first connecting hole matched with the connecting part in shape, the loading and unloading device comprises a pressing assembly and a slide buckle assembly, the pressing assembly comprises a pressing piece, the top of the pressing piece extends out of the central screw of the middle portion of the rotator, the lower portion of the pressing piece is embedded into the slide buckle assembly so as to open or close the slide buckle assembly, and the reverse buckle part of the rotating shaft is locked when the slide buckle assembly is closed.

2. The centrifuge of claim 1, wherein: The pressing piece comprises a top rod, an intermediate block and an insertion plate, the top rod is connected to the intermediate block and extends out of the central screw, the upper portion of the insertion plate is fixedly connected to the intermediate block, and the lower portion is arranged on the slide buckle assembly, and the top rod and the insertion plate are arranged on the upper and lower sides of the intermediate block respectively.

3. The centrifuge of claim 2, wherein: A central screw is arranged on the rotator, and the top rod extends out of the central hole of the central screw.

4. The centrifuge of claim 2, wherein: Two insertion plates are symmetrically arranged on the intermediate block.

5. The centrifuge of any one of claims 1-4, wherein: The slide buckle assembly comprises a sliding block, a sliding block spring and a connecting seat, the connecting seat is arranged at the bottom of the central screw and connected with the central screw, sliding blocks are connected to the two sides of the connecting seat through sliding block springs respectively, and the two sliding blocks are oppositely arranged.

6. The centrifuge of claim 5, wherein: Sliding block springs are arranged between the sliding blocks and the connecting seat, one end of the sliding block spring is connected to the sliding block, and the other end is sleeved on the transverse limiting column and abuts against the inner wall of the connecting seat.

7. The centrifuge of claim 6, wherein: One end of the transverse limiting column faces the sliding block, and the other end penetrates through the connecting seat and is connected to the central screw.

8. The centrifuge of claim 5, wherein: A connecting seat cover plate is arranged on the connecting seat, and a through hole through which the pressing piece passes is arranged on the connecting seat cover plate.

9. The centrifuge of claim 8, wherein: An upper limiting column is arranged in the middle portion of the connecting seat cover plate, a pressing spring is sleeved on the upper limiting column, the upper end of the pressing spring abuts against the pressing piece, and the lower end abuts against the connecting seat cover plate.

10. The centrifuge of claim 1, wherein: A reverse buckle step for buckling the rotator cover is arranged on the upper portion of the central screw, a stop ring is arranged below the reverse buckle step, and a connecting step corresponding to the reverse buckle step is arranged on the rotator cover.

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