CN212328626U - Centrifuge rotor cover and centrifuge - Google Patents

Abstract

A centrifuge rotor cover comprising: a rotor cover body having: at least one elastic expansion piece, it sets up radially along the spin axis of centrifuge; and at least one spacing element, one end of the spacing element contacts with elastic expansion piece; still including the installation base, installation base and centrifuge rotor fixed connection are formed with on it: the limiting groove is inwards sunken along the radial direction of a rotating shaft of the centrifugal machine; the locking groove is inwards sunken along the radial direction of the rotating shaft of the centrifugal machine and is communicated with the limiting groove, and the sunken depth of the locking groove is greater than that of the limiting groove; during installation, the rotor cover body is sleeved outside the installation base, and the limiting element enters the limiting groove from top to bottom along the axial direction of the rotating shaft of the centrifugal machine and enters the locking groove along the limiting groove; the elastic expansion piece presses the limiting element to abut against the locking groove. A centrifuge is also provided. The utility model provides a centrifuge rotor lid can realize installing fast and dismantle.

Description

Centrifuge rotor cover and centrifuge

Technical Field

The utility model belongs to the technical field of centrifuge, especially, relate to a centrifuge rotor lid to and a centrifuge.

Background

The centrifuge rotor is mounted on a centrifuge. Such centrifuges are used primarily in laboratories for research in the fields of medicine, pharmacy, biology, and chemistry to separate components of a sample using mass inertia. The rotor speed of the centrifuge needs to be kept at least 3000 rpm, which may reach 10000 rpm or even 15000 rpm under special requirements. The rotor is provided with sample containers in different ways, in which the samples to be centrifuged are stored and rotated. In order to accommodate sample containers, such as test tubes, pipettes, etc., the interior of the centrifuge rotor is usually designed with a plurality of receiving locations which form cavities through which the gas flow passes. During high speed rotation of the centrifuge, a loud noise may be generated due to the friction of the surface air. For the purpose of reducing air friction, a rotor cover is usually added to the upper portion of the rotor. And a sealing ring is arranged on part of the rotor cover to prevent the leakage of reagents, especially toxic and harmful reagents, in the rotor cover in the centrifugal process.

The rotor cover in the prior art is usually locked by adopting a threaded mounting or a bolt mounting mode. As disclosed in chinese patent application (publication No. CN 1840237A): both locking and unlocking of the closure can be achieved with one hand. During locking, the cover is pressed onto the rotor pin until the latch member engages behind the undercut. During unlocking, the latch part, with the part projecting out of the handle, is moved laterally in the direction of the compression spring until the opening has reached a suitable position, so that the undercut no longer comes into contact with the opening and the cover is no longer pressed by the rotor pin in the direction of the receiving space. "this mounting structure is complicated, and if the latch member is damaged, locking and unlocking cannot be performed. And the installation of screw thread, installation dismantlement process all need carry out several rotations.

Disclosure of Invention

The utility model discloses to the complicated or numerous and complicated problem of operation dismantlement process of rotor lid connection structure among the prior art, design and provide a brand-new centrifuge rotor lid.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

a centrifuge rotor cover comprising: a rotor cover body having: at least one elastic expansion piece, the elastic expansion piece is arranged along the radial direction of the rotating shaft of the centrifugal machine; and at least one spacing element, one end of the spacing element contacts with elastic expansion piece; and, the installation base, installation base and centrifuge rotor fixed connection are formed with on the installation base: the limiting groove is inwards sunken along the radial direction of a rotating shaft of the centrifugal machine; the locking groove is inwards sunken along the radial direction of the rotating shaft of the centrifugal machine and is communicated with the limiting groove, and the sunken depth of the locking groove is greater than that of the limiting groove; during installation, the rotor cover body is sleeved outside the installation base, and the limiting element enters the limiting groove from top to bottom along the axial direction of the rotating shaft of the centrifugal machine and enters the locking groove along the limiting groove; the elastic expansion piece presses the limiting element to abut against the locking groove.

Further, the rotor cover body includes: the handle is sleeved outside the mounting base in the mounting state; a cavity is formed on the side wall of the handle, and the elastic telescopic piece is arranged in the cavity.

Further, the rotor cover body includes: the cover body is sleeved on the outer side of the handle, the first end of the elastic expansion piece arranged in the cavity abuts against the cover body, and the second end of the elastic expansion piece is connected with the limiting element.

Furthermore, the cover body and the handle are fixedly connected through a clamp spring.

Furthermore, a limiting groove is formed on the outer wall of the mounting base, the limiting groove and the locking groove are sequentially distributed along a first direction, and the first direction is opposite to the rotation direction of the centrifuge rotor; the limiting groove is provided with: a first end formed at an upper portion of the mounting base; and a second end formed at a lower portion of the mounting base and communicated with the locking groove; the width of the first end is greater than the width of the second end.

An alternative configuration is that the side defining the first end is arc-shaped.

An alternative configuration is that the sides defining the first end are inclined inwardly from top to bottom.

An alternative configuration is that the sides enclosing the first end are inclined inwardly from top to bottom and the second end is a rectangular channel extending from top to bottom.

Preferably, the elastic expansion piece is a spring, and the limiting element is a locking steel ball.

Still disclose a centrifuge simultaneously, including centrifuge rotor lid, centrifuge rotor lid includes: a rotor cover body having: at least one elastic expansion piece, the elastic expansion piece is arranged along the radial direction of the rotating shaft of the centrifugal machine; and at least one spacing element, one end of the spacing element contacts with elastic expansion piece; and, the installation base, installation base and centrifuge rotor fixed connection are formed with on the installation base: the limiting groove is inwards sunken along the radial direction of a rotating shaft of the centrifugal machine; the locking groove is inwards sunken along the radial direction of the rotating shaft of the centrifugal machine and is communicated with the limiting groove, and the sunken depth of the locking groove is greater than that of the limiting groove; during installation, the rotor cover body is sleeved outside the installation base, and the limiting element enters the limiting groove from top to bottom along the axial direction of the rotating shaft of the centrifugal machine and enters the locking groove along the limiting groove; the elastic expansion piece presses the limiting element to abut against the locking groove.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

the utility model provides a centrifuge rotor lid can realize installing fast and dismantle, avoids loaded down with trivial details repeated operation action. Especially if need carry out many times dismouting in the experiment, this kind of structure can greatly simplify operation process, practices thrift experimenter's time.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a specific embodiment of a centrifuge rotor cover provided in the present invention;

FIG. 2 is a cross-sectional view of the rotor shaft of the centrifuge rotor cover according to the present invention in an installed state;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of the structure of the assembled cover body and handle;

FIG. 5 is a schematic view of a first alternative construction of the mounting base;

FIG. 6 is a schematic view of a second alternative construction of the mounting base;

FIG. 7 is a schematic view of a third alternative construction of the mounting base;

fig. 8 is a schematic view of a fourth alternative structure of the mounting seat.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In order to solve the problem that the connection structure of the rotor cover is complex or the operation and disassembly process is complex in the prior art, a rotor cover of a centrifuge with a brand-new design is shown in fig. 1 and 2. This kind of centrifuge rotor lid 1 mainly comprises rotor lid body 10 and installation base 13 two parts of mutually supporting, wherein installation base 13 and centrifuge rotor fixed connection, is formed with a plurality of positions 15 of holding on the centrifuge rotor, can place at least one sample of waiting to separate in each position 15 of holding. The mounting and dismounting of the centrifuge rotor cover 1 is accomplished by the cooperation of the rotor cover body 10 and the mounting base 13. Specifically, the rotor cover body 10 has at least one elastic expansion piece 11 and a position-limiting element 12, the elastic expansion piece 11 is arranged along the radial direction of the rotation axis of the centrifuge with the rotation axis of the whole centrifuge as the description reference, the elastic expansion piece 11 is contacted with one end of the position-limiting element 12, and the compression and recovery of the elastic expansion piece 11 can change the relative position of the position-limiting element 12. And a limiting groove 16 and a locking groove 17 are formed on the mounting base 13 corresponding to the limiting element 12, the limiting groove 16 and the locking groove 17 are both inwards recessed along the radial direction of the rotating shaft of the centrifugal machine, the limiting groove 16 is communicated with the locking groove 17, and the recessed depth of the locking groove 17 is greater than that of the limiting groove 16. During installation, a user sleeves the rotor cover body 10 outside the installation base 13, the limiting element 12 axially enters the limiting groove 16 from top to bottom along the rotating shaft of the centrifuge, the elastic expansion piece 11 is compressed due to extrusion of the limiting groove 16, and the limiting element 12 slides between the elastic expansion piece 11 and the limiting groove 16 along the limiting groove 16 until entering the locking groove 17. Because the depth of the recess of the locking groove 17 is deeper, after the position-limiting element 12 enters the locking groove 17, the elastic expansion piece 11 is restored to the extended state, so that the position-limiting element 12 is limited in the locking groove 17, and cannot move relatively under the condition of no external force, thereby realizing the fixed connection between the rotor cover body 10 and the mounting base 13. When the rotor cover is disassembled, a user applies external force in the opposite direction, the limiting element 12 in the locking groove 17 extrudes the elastic telescopic piece 11 in a stressed state, the limiting element 12 is separated from the locking groove 17, the locking state is released, unlocking is realized, and the user can directly take down the rotor cover body 10. The centrifuge rotor cover 1 can be rapidly assembled and disassembled, and complicated and repeated operation actions are avoided. Especially if need carry out many times dismouting in the experiment, this kind of structure can greatly simplify operation process, practices thrift experimenter's time.

As shown in fig. 2 and 3, preferably, the elastic expansion member 11 is implemented by a spring, and the position-limiting member 12 is implemented by a locking steel ball. In consideration of the stability of connection, the elastic expansion piece 11, the limiting element 12 and the limiting groove 16 and the locking groove 17 which are matched with the limiting element and arranged on the mounting base 13 are all arranged in a plurality and are uniformly arranged in a surrounding manner.

As shown in fig. 1, 2 and 4, the rotor cover body 10 is mainly composed of two parts, i.e., a handle 18 and a cover body 20. The handle 18 is designed to be a hollow structure, and in an installation state, the handle 18 is sleeved outside the installation base 13. The handle 18 has a plurality of cavities 19 formed in its side wall and the resilient bellows 11 is disposed in the cavities 19 so as to remain radially extending along the axis of rotation of the centrifuge in both extended and compressed states. When the rotor cover is removed, the stopper element 12, i.e., the locking ball, which is unlocked, is also received in the cavity 19 formed in the side wall of the handle 18, and is separated from the mounting base 13. The cover body 20 of the rotor cover body 10 is sleeved outside the handle 18. If the cavity 19 is designed in the form of a through-hole, the elastic extension 11 arranged in the cavity 19, i.e. the first end of the spring, can be abutted against and fixedly connected to the cover body 20, and the second end of the elastic extension 11 is connected to the stop element 12, so that the assembly is achieved. On the other side, the cover body 20 is integrally and fixedly connected with the handle 18 by a clamp spring 21 and is kept stable (as shown in fig. 3).

As shown in fig. 5 to 8, the shape of the limiting groove 16 is particularly optimized, and by adopting the design, a user can install the rotor cover without an additional alignment step, and on the other hand, the rotor cover can be prevented from falling off. Specifically, the limit recesses 16 are formed on the outer wall of the mounting base 13, and the limit recesses 16 and the locking recesses 17 are sequentially distributed in a first direction, which is opposite to the rotation direction of the centrifuge rotor, i.e., assuming that the limit recesses 16 and the locking recesses 17 are distributed clockwise, the rotor is rotated counterclockwise during centrifugation, and vice versa. In this way, the stopper member 12 locked in the locking recess 17, i.e., the locking balls, is not dropped, and further, the rotor cover can be effectively prevented from dropping. The stopper groove 16 has a first end 21 and a second end 22, wherein the first end 21 is formed at an upper portion of the mounting base 13, and the second end 22 is formed at a lower portion of the mounting base 13 and communicates with the locking groove 17. The width of the first end 21 is greater than the width of the second end 22. By adopting the design of big end up, when the rotor cover is installed, the user handle 18 places the rotor cover body 10 on the installation base 13, the locking steel ball can enter the first end 21 of the limiting groove 16 at the maximum probability and directly slide to the second end 22 of the lower part and communicated with the locking groove 17, and the user is prevented from repeatedly rotating the alignment angle during installation. In the process, part or all of the locking balls are retracted into the cavity 19 in the side wall of the handle 18. When the rotor cover body 10 is screwed clockwise by a certain angle, the locking steel balls enter the locking grooves 17 to realize locking.

Referring to fig. 6 to 8, the shape of the limiting groove 16 may be designed in many different ways, as shown in fig. 6, the side edge surrounding the first end 21-1 is arc-shaped, that is, the first end 21-1 is designed in a horn shape with a large top and a small bottom, and the upper end is gradually enlarged toward two sides. Or the sides surrounding the first end 21-2 may be inclined inwardly from top to bottom as shown in fig. 7. Or as shown in fig. 8, the side edges surrounding the first end 21-3 are inclined inward from top to bottom, and the second end 22-3 is designed as a rectangular channel extending from top to bottom. The three shapes can play a role in guiding the limiting element 12 into the limiting groove 16 and further into the locking groove 17, so that the maximum probability of one-time placement in place is realized, and unnecessary installation and adjustment are reduced.

The utility model discloses still provide a centrifuge simultaneously, be provided with in this kind of centrifuge like the centrifuge rotor lid that records in above-mentioned embodiment and the specification attached drawing. The specific structure of the centrifuge rotor cover is not described in detail herein. The same technical effect can be achieved by the centrifuge provided with the centrifuge rotor cover.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims (10)

1. A centrifuge rotor cover, comprising:

a rotor cover body having:

at least one elastic expansion piece, wherein the elastic expansion piece is arranged along the radial direction of the rotating shaft of the centrifugal machine; and

at least one limiting element, wherein one end of the limiting element is contacted with the elastic expansion piece;

and, the installation base, installation base and centrifuge rotor fixed connection, be formed with on the installation base:

the limiting groove is inwards sunken along the radial direction of a rotating shaft of the centrifugal machine;

the locking groove is inwards sunken along the radial direction of a rotating shaft of the centrifugal machine and is communicated with the limiting groove, and the sunken depth of the locking groove is greater than that of the limiting groove;

when the centrifugal machine is installed, the rotor cover body is sleeved on the outer side of the installation base, and the limiting element enters the limiting groove from top to bottom along the axial direction of the rotating shaft of the centrifugal machine and enters the locking groove along the limiting groove; the elastic expansion piece extrudes the limiting element to abut against the locking groove.

2. The centrifuge rotor cover of claim 1,

the rotor cover body includes:

the handle is sleeved outside the mounting base in the mounting state; a cavity is formed in the side wall of the handle, and the elastic telescopic piece is arranged in the cavity.

3. The centrifuge rotor cover of claim 2,

the rotor cover body includes:

the cover body is sleeved on the outer side of the handle, the first end of the elastic expansion piece arranged in the cavity is abutted against the cover body, and the second end of the elastic expansion piece is connected with the limiting element.

4. The centrifuge rotor cover of claim 3 wherein:

the cover body and the handle are fixedly connected through a clamp spring.

5. The centrifuge rotor cover of any of claims 1 to 4, wherein:

the limiting grooves are formed in the outer wall of the mounting base, the limiting grooves and the locking grooves are sequentially distributed along a first direction, and the first direction is opposite to the rotation direction of the centrifuge rotor;

the limiting groove is provided with:

a first end formed at an upper portion of the mounting base; and

a second end formed at a lower portion of the mounting base and communicating with the locking groove;

the width of the first end is greater than the width of the second end.

6. The centrifuge rotor cover of claim 5 wherein:

the side edge which encloses the first end is arc-shaped.

7. The centrifuge rotor cover of claim 5 wherein:

the side edges which enclose the first end incline inwards from top to bottom.

8. The centrifuge rotor cover of claim 5 wherein:

the side edge which encloses the first end inclines inwards from top to bottom, and the second end is a rectangular channel extending from top to bottom.

9. The centrifuge rotor cover of claim 1,

the elastic expansion piece is a spring, and the limiting element is a locking steel ball.

10. A centrifuge comprising a centrifuge rotor cover according to any of claims 1 to 9.

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