CN220310716U

CN220310716U - Centrifugal machine

Info

Publication number: CN220310716U
Application number: CN202321813839.8U
Authority: CN
Inventors: 张敏; 汤继勇
Original assignee: Probeno Chongqing Biotechnology Co ltd
Current assignee: Probeno Chongqing Biotechnology Co ltd
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2024-01-09
Anticipated expiration: 2033-07-11

Abstract

The utility model belongs to the technical field of centrifuges, and provides a centrifuger which comprises a base, a motor arranged in the base, a rotor arranged on a power output shaft of the motor and used for placing a centrifuge tube, and a cover body arranged on the base, and further comprises: the connecting jack is arranged on a power output shaft of the motor; the plug-in part is matched with the connection jack, is arranged on the rotor and is fixedly connected with the rotor; and a locking mechanism provided on the rotor and/or the power output shaft of the motor for locking the plug-in portion in the connection insertion hole. The centrifugal machine provided by the utility model has the advantages of simple structure, reasonable design and convenience in mounting and replacing the rotor.

Description

Centrifugal machine

Technical Field

The utility model relates to the technical field of centrifuges, in particular to a centrifuge.

Background

The centrifuge is a machine for accelerating separation of different materials to be separated by centrifugal force, and comprises a base 100, a motor arranged in the base, a rotor 200 arranged on a power output shaft of the motor and used for placing a centrifuge tube, and a cover 300 arranged on the base. When in use, the cover body 300 is opened, the centrifuge tube filled with the material to be centrifuged is inserted into the jack on the rotor 200, the cover body 300 is closed, the centrifuge is started, and the purpose of quick separation can be achieved under the action of centrifugal force.

Currently, to accommodate a variety of different sizes or types of centrifuge tubes, each centrifuge is typically equipped with a variety of different types of rotors 200. When the centrifugal tube is used, the purpose of being applicable to different centrifugal tubes is achieved by replacing the rotors 200 of different types.

However, in the centrifuge of the prior art, the rotor 200 is usually fixed to the power output shaft of the motor by the nut 400, so that it is inconvenient to replace the rotor 200 during use.

Disclosure of Invention

In view of the drawbacks of the prior art, an object of the present utility model is to provide a centrifuge for facilitating rotor replacement.

In order to achieve the above object, the present utility model provides a centrifuge, including a base, a motor disposed in the base, a rotor disposed on a power output shaft of the motor and used for placing a centrifuge tube, and a cover disposed on the base, further including:

the connecting jack is arranged on a power output shaft of the motor;

the plug-in part is matched with the connection jack, is arranged on the rotor and is fixedly connected with the rotor; and

and the locking mechanism is arranged on the rotor and/or the power output shaft of the motor and is used for locking the plug-in part in the connecting jack.

Further, the locking mechanism includes:

a locking jack which is arranged on the side wall of the connecting jack;

the locking bolt is arranged in the plug-in part and is in sliding connection with the plug-in part, and can do reciprocating linear motion between a first working position A and a second working position A along the direction approaching or separating from the locking plug-in part, wherein when the locking bolt is positioned in the first working position A, the locking bolt is retracted into the side wall of the plug-in part, and when the locking bolt is positioned in the second working position A, the locking bolt extends out of the side wall of the plug-in part; and

and the driving structure is arranged on the rotor and is used for driving the locking bolt to do reciprocating linear motion between the first working position A and the second working position A.

Further, the driving structure includes:

the rotor is provided with a mounting cavity with an opening at the top, the driving sliding block is arranged in the mounting cavity in a sliding manner, the driving sliding block can do reciprocating linear motion between a first working position B and a second working position B along the axial lead of the plug-in connection part, when the driving sliding block is positioned at the first working position B, the locking bolt is positioned at the first working position A, when the driving sliding block is positioned at the second working position B, the locking bolt is positioned at the second working position A, the bottom of the driving sliding block is provided with a guide inclined plane matched with the locking bolt, and one end of the locking bolt far away from the locking jack always keeps abutting against the guide inclined plane;

the first elastic piece is sleeved on the locking plug pin, two ends of the first elastic piece are respectively abutted against the locking plug pin and the inner wall of the mounting cavity, and the first elastic piece has a tendency of enabling the locking plug pin to move in a direction away from the locking plug hole in a natural state; and

and a locking assembly arranged on the driving slide block and/or the rotor and used for keeping the driving slide block at the first working position B and the second working position B.

Further, the locking assembly includes:

the first end of the locking pull rod is hinged with the inner wall of the mounting cavity, and the second end of the locking pull rod is provided with a sliding part;

a guide groove provided on a side wall of the driving slider for guiding the sliding of the sliding portion, including a slide-in and slide-out guide portion, a first guide portion, a tentative portion, and a second guide portion, the slide-in and slide-out guide portion, the first guide portion, the tentative portion, and the second guide portion being connected end to end in order to form a heart-shaped groove, the sliding portion sliding along the slide-in and slide-out guide portion and the first guide portion toward the tentative portion and temporarily staying at the tentative portion, the sliding portion sliding along the second guide portion and the slide-in and slide-out guide portion toward an end of the slide-in and slide-out guide portion away from the tentative portion and temporarily positioning at an end of the slide-in and slide-out guide portion away from the tentative portion; and

the second elastic piece is arranged in the mounting cavity, two ends of the second elastic piece are respectively abutted against the driving sliding block and the bottom side wall of the mounting cavity, and the second elastic piece has a tendency of enabling the driving sliding block to move from the second working position B to the first working position B in a natural state.

Further, the number of the locking assemblies is two, and the two locking assemblies are uniformly arranged around the axis of the plug-in connection part.

Further, the end of the dead bolt remote from the locking socket is spherical or hemispherical.

The utility model has the beneficial effects that:

according to the centrifuge provided by the utility model, the connecting jack is arranged on the power output shaft of the motor, the plug-in part is arranged on the rotor, and the locking mechanism for locking the plug-in part in the connecting jack is arranged on the power output shaft of the motor and/or the rotor, so that the aim of facilitating rotor replacement is fulfilled.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a perspective view of a centrifuge of the prior art;

FIG. 2 is a perspective view of a centrifuge according to an embodiment of the present utility model;

FIG. 3 is a partial cross-sectional view of the centrifuge shown in FIG. 2 (embodiment one);

fig. 4 is an enlarged view at a shown in fig. 3;

FIG. 5 is a partial cross-sectional view of the centrifuge shown in FIG. 2 (embodiment two);

fig. 6 is an enlarged view at B shown in fig. 5.

Reference numerals:

the base 100, the rotor 200, the plug portion 210, the installation cavity 220, the cover 300, the nut 400, the power output shaft 500, the connection insertion hole 510, the lock mechanism 600, the lock insertion hole 610, the lock plug 620, the driving slider 630, the guide slope 631, the first elastic member 640, the lock pull rod 650, the sliding portion 651, the guide groove 660, the slide-in slide-out guide portion 661, the first guide portion 662, the tentative portion 663, the second guide portion 664, and the second elastic member 670.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

As shown in fig. 2 to 6, the present utility model provides a centrifuge including a base 100, a motor provided in the base 100, a rotor 200 provided on a power output shaft of the motor and used for placing a centrifuge tube, and a cover 300 provided on the base 100. These are prior art and will not be described in detail herein.

The centrifuge provided by the present utility model further comprises a connection jack 510, a plug portion 210, and a locking mechanism 600.

Wherein, the connection jack 510 is arranged on the power output shaft 500 of the motor. The plug-in portion 210 is adapted to the connection jack 510, and the plug-in portion 210 is disposed on the rotor 200 and fixedly connected to the rotor 200. Preferably, the socket 210 is integrally formed with the rotor 200. A locking mechanism 600 is provided on the rotor 200 and/or the power take-off shaft 500 of the motor for locking the plug 210 within the connection socket 510.

When the rotor 200 is required to be mounted on the power output shaft 500 of the motor, firstly, the plug-in part 210 is inserted into the connection jack 510, and secondly, the plug-in part 210 is locked in the connection jack 510 by the locking mechanism 600, so that the rotor 200 is mounted on the power output shaft 500 of the motor; when the rotor 200 needs to be disassembled, the locking mechanism 600 is firstly unlocked from the plug-in part 210, and then the plug-in part 210 is pulled out, so that the purpose of disassembling the rotor 200 from the power output shaft 500 of the motor can be achieved.

The centrifuge with this structure achieves the purpose of facilitating the replacement of the rotor 200 by providing the connection jack 510 on the power output shaft 500 of the motor, providing the plug-in portion 210 on the rotor 200, and providing the locking mechanism 600 for locking the plug-in portion 210 in the connection jack 510 on the power output shaft 500 of the motor and/or the rotor 200.

In one embodiment, the locking mechanism 600 includes a locking receptacle 610, a locking bolt 620, and a drive structure.

The locking socket 610 is formed on a sidewall of the connection socket 510. The lock latch 620 is matched with the lock jack 610, that is, the size and shape of the lock latch 620 are identical to those of the lock jack 610, and when the lock latch 620 is inserted into the lock jack 610, the purpose of locking the plug portion 210 into the connection jack 510 can be achieved, and when the lock latch 620 is pulled out from the lock jack 610, the purpose of unlocking can be achieved. The lock pin 620 is disposed in the plug portion 210 and slidably connected to the plug portion 210, and the lock pin 620 is capable of reciprocating rectilinear motion between a first operating position a and a second operating position a in a direction approaching or moving away from the lock insertion hole 610.

When the lock pin 620 is at the first working position a, the lock pin 620 is retracted into the side wall of the plug portion 210, so that the lock pin 620 cannot be inserted into the lock insertion hole 610, and the purpose of releasing the lock of the locking structure to the plug portion 210 is achieved. When the dead bolt 620 is in the second working position a, the dead bolt 620 extends beyond the side wall of the plug portion 210, so that the dead bolt 620 can be inserted into the locking jack 610, and the purpose of locking the plug portion 210 in the connection jack 510 is achieved.

A driving structure is provided on the rotor 200 for driving the lock catch 620 to reciprocate linearly between the first operating position a and the second operating position a.

When the rotor 200 is required to be mounted on the power output shaft 500 of the motor, firstly, the plug-in portion 210 is inserted into the connection jack 510, and secondly, the locking bolt 620 is driven from the first working position a to the second working position a by the driving structure, so that the locking bolt 620 is inserted into the locking jack 610, and the purpose of locking the plug-in portion 210 in the connection jack 510 is achieved; when the rotor 200 needs to be disassembled, the locking bolt 620 is first driven from the second working position a to the first working position a by using the driving structure, so that the locking bolt 620 is pulled out from the locking jack 610, thereby releasing the locking of the plug portion 210, and then the plug portion 210 is pulled out.

The locking mechanism 600 with the structure has the advantages of simple structure, reasonable design and convenient operation.

Preferably, the number of the locking pins 620 and the locking jacks 610 is two, and the two locking pins 620 and the two locking jacks 610 are uniformly distributed around the axis of the plugging portion 210, so as to achieve the purpose of balancing the moment of inertia.

In one embodiment, the drive structure includes a drive slide 630, a first resilient member 640, and a locking assembly.

The rotor 200 is provided with a mounting cavity 220 with an open top, the driving sliding block 630 is slidably arranged in the mounting cavity 220, the driving sliding block 630 can reciprocate between a first working position B and a second working position B along the axial lead of the plug-in connection part 210, when the driving sliding block 630 is in the first working position B, the locking bolt 620 is in the first working position A, and when the driving sliding block 630 is in the second working position B, the locking bolt 620 is in the second working position A. Specifically, the bottom of the driving slider 630 is provided with a guide slope 631 that mates with the lock pin 620, and the end of the lock pin 620 that is remote from the lock insertion hole 610 always keeps abutting against the guide slope 631.

The first elastic member 640 is sleeved on the lock pin 620, two ends of the first elastic member 640 respectively abut against the lock pin 620 and the inner wall of the mounting cavity 220, and in a natural state, the first elastic member 640 has a tendency to move the lock pin 620 in a direction away from the lock insertion hole 610.

A locking assembly is provided on the drive slide 630 and/or the rotor 200 for holding the drive slide 630 in the first operating position B and in the second operating position B. Specifically, when the drive slider 630 is in the first working position B, the locking assembly maintains it in the first working position B under the action of the locking assembly; when the drive slide 630 is in the second operating position B, the locking assembly retains it in the second operating position B under the influence of the locking assembly.

In use, during the process of moving the driving slider 630 from the first working position B to the second working position B, under the action of the guiding inclined plane 631, the driving slider 630 pushes the locking bolt 620 from the first working position a to the second working position a through the guiding inclined plane 631, when the driving slider 630 moves to the second working position B, the locking bolt 620 moves to the second working position a so as to be inserted into the locking jack 610, and meanwhile, under the action of the locking assembly, the locking assembly keeps the driving slider 630 at the second working position B, so that the purpose of keeping the locking bolt 620 at the first working position a is achieved, and the purpose of keeping the plugging portion 210 locked in the connecting jack 510 is achieved.

In the process that the driving sliding block 630 moves from the second working position B to the first working position B, under the action of the first elastic piece 640, the locking bolt 620 is pushed from the second working position a to the first working position a, when the driving sliding block 630 moves to the first working position B, the locking bolt 620 moves to the first working position a so as to be pulled out of the locking jack 610, and meanwhile, under the action of the locking assembly, the locking assembly keeps the driving sliding block 630 at the first working position B, so that the purpose of keeping the locking bolt 620 at the first working position a is achieved, and the purpose of keeping unlocking is achieved.

The driving structure of the structure has simple structure and reasonable design, can achieve the purpose of driving the lock bolt 620 by pressing the driving sliding block 630, and is simple to operate.

Preferably, the end of the locking bolt 620 remote from the locking socket 610 is spherical or hemispherical, or a universal ball is provided at the end of the locking bolt 620 remote from the locking socket 610 for the purpose of reducing friction.

Preferably, the first elastic member 640 is a spring.

In one embodiment, the locking assembly includes a locking pull rod 650, a guide groove 660, and a second elastic member 670.

The locking lever 650 has a first end hinged to the inner wall of the mounting cavity 220 and a second end having a sliding portion 651.

The guide groove 660 is formed on a side wall of the driving slider 630, the guide groove 660 is used for guiding the sliding of the sliding portion 651, the guide groove 660 includes a slide-in and slide-out guide portion 661, a first guide portion 662, a tentative portion 663, and a second guide portion 664, and the slide-in and slide-out guide portion 661, the first guide portion 662, the tentative portion 663, and the second guide portion 664 are connected end to end in order to form a heart-shaped groove.

The slide portion 651 slides along the slide-in and slide-out guide portion 661 and the first guide portion 662 toward the tentative portion 663 and can temporarily stay in the tentative portion 663. Specifically, the sliding portion 651 first slides along the slide-in and slide-out guide portion 661 toward the first guide portion 662 and then slides along the first guide portion 662 toward the tentative portion 663, which is a process in which the driving slider 630 moves from the first operating position B toward the second operating position B, and when the sliding portion 651 slides to the tentative portion 663 and is temporarily positioned at the tentative portion 663, the driving slider 630 moves to the second operating position B and is held at the second operating position B, and the lock pin 620 is driven to the second operating position a and is held at the second operating position a by the driving slider 630.

The sliding portion 651, after being separated from the tentative portion 663, slides along the second guide portion 664 and the slide-in and slide-out guide portion 661 toward an end of the slide-in and slide-out guide portion 661 remote from the tentative portion 663 and is temporarily positionable at an end of the slide-in and slide-out guide portion 661 remote from the tentative portion 663. Specifically, after the sliding portion 651 leaves the tentative portion 663, it first slides along the second guide portion 664 toward the slide-in and slide-out guide portion 661, and then slides along the slide-in and slide-out guide portion 661 toward the end of the slide-in and slide-out guide portion 661 away from the tentative portion 663, which is a process in which the driving slider 630 moves from the second operating position B toward the first operating position B, and when the sliding portion 651 slides to the end of the slide-in and slide-out guide portion 661 away from the tentative portion 663 and is temporarily positioned at the end of the slide-in and slide-out guide portion 661 away from the tentative portion 663, the driving slider 630 moves to the first operating position B and is held at the first operating position B, and the lock pin 620 moves to the first operating position a and is held at the first operating position a.

The second elastic member 670 is disposed in the mounting cavity 220, two ends of the second elastic member 670 respectively abut against the driving slider 630 and a bottom sidewall of the mounting cavity 220, and in a natural state, the second elastic member 670 has a tendency to move the driving slider 630 from the second working position B to the first working position B.

In use, the driving slider 630 is first pressed, so that the driving slider 630 moves from the first working position B to the second working position B against the elastic force of the second elastic member 670, in the process, the sliding portion 651 first slides along the slide-in and slide-out guiding portion 661 to the first guiding portion 662, and when the sliding portion 651 slides to the connection position of the slide-in and slide-out guiding portion 661 and the first guiding portion 662, the sliding portion 651 cannot move continuously under the action of external force, so that the driving slider 630 cannot move continuously in a direction away from the first working position B. At this time, the pressing of the driving slider 630 is stopped, the driving slider 630 moves in a direction approaching the first working position B under the elastic force of the second elastic member 670, during this process, the sliding portion 651 slides along the first guiding portion 662 toward the suspending portion 663, when the sliding portion 651 slides to the suspending portion 663, the sliding portion 651 cannot move continuously under the elastic force of the second elastic member 670, and the driving slider 630 moves to the second working position B, and since the sliding portion 651 cannot move continuously under the elastic force of the second elastic member 670, the driving slider 630 is kept at the second working position B.

The driving slider 630 is pressed again, so that the driving slider 630 moves against the elastic force of the second elastic member 670, in the process, the sliding portion 651 leaves the tentative portion 663 to slide into and out of the guide portion 661 along the second guide portion 664, when the sliding portion 651 slides to the connection position between the second guide portion 664 and the slide into and out of the guide portion 661, the sliding portion 651 cannot continue to slide under the action of external force, at this time, the pressing of the driving slider 630 is stopped, the driving slider 630 moves towards the direction close to the first working position B under the action of the second elastic member 670, in the process, the sliding portion 651 slides along the slide into and out of the guide portion 661 to the end far from the tentative portion 663 of the slide into and out of the guide portion 661, and when the sliding portion 651 slides into and out of the end far from the tentative portion 663 of the guide portion 661, the sliding portion 651 cannot continue to move under the action of the elastic force of the second elastic member 670, the driving slider 630 cannot move to the first working position B, and the sliding portion 651 cannot continue to move under the action of the elastic force of the second elastic member 670, so that the driving slider is kept at the first working position B.

The locking assembly of this structure, simple structure, reasonable in design, and through pressing drive slider 630 once, can reach the purpose that removes drive slider 630 from first working position B to second working position B and kept in second working position B, through pressing the drive again smooth quick, can reach the purpose that removes drive slider 630 from second working position B to first working position B and keep in first working position B, easy operation, convenient to use.

Preferably, the number of the locking assemblies is two, and the two locking assemblies are uniformly arranged around the axis of the plugging portion 210, so as to achieve the purpose of balancing the moment of inertia.

Preferably, the second elastic member 670 is a spring.

In the description of the present utility model, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims

1. The utility model provides a centrifuge, includes the base, sets up motor in the base, set up on the power take off shaft of motor and be used for placing the rotor of centrifuging tube and set up lid on the base, its characterized in that: further comprises:

the connecting jack is arranged on a power output shaft of the motor;

2. The centrifuge of claim 1, wherein: the locking mechanism includes:

a locking jack which is arranged on the side wall of the connecting jack;

3. The centrifuge of claim 2, wherein: the driving structure includes:

4. A centrifuge as claimed in claim 3, wherein: the locking assembly includes:

5. The centrifuge of claim 4, wherein: the number of the locking assemblies is two, and the two locking assemblies are uniformly arranged around the axial lead of the plug-in connection part.

6. The centrifuge of any one of claims 3-5, wherein: one end of the locking bolt, which is far away from the locking jack, is spherical or hemispherical.