CN221907677U - A centrifuge rotor capable of fixing and sealing test tubes of various specifications - Google Patents

Abstract

The utility model relates to the field of centrifuges, in particular to a centrifuge rotor capable of fixing and plugging test tubes with multiple specifications, which can play a role in plugging and limiting the test tubes with multiple specifications and avoid liquid leakage during rotation. Including the cylinder, cylinder upper surface circumference inlay have a plurality of jack with test tube complex, cylinder bottom central point puts fixedly be equipped with driving motor complex connecting axle, cylinder upper surface central point puts fixedly and is equipped with the dead lever, and the dead lever is cylindrically, and can slide the cover from top to bottom on the dead lever and be equipped with the lantern ring, the lantern ring outside is screwed up with dead lever complex first stop bolt inwards, lantern ring surface circumference interval is fixed be equipped with jack quantity assorted horizontal pole, horizontal pole outer tip fixed be equipped with test tube surface complex locating part, still fixed be equipped with removable test tube cap and height-adjustable's test tube shutoff structure on the inboard horizontal pole of locating part. The device is simple to operate, convenient to use and suitable for various test tubes.

Description

A centrifuge rotor capable of fixing and sealing test tubes of various specifications

Technical Field

The utility model relates to the field of centrifuges, in particular to a centrifuge rotor which can fix and seal test tubes of multiple specifications.

Background Art

When a suspension containing fine particles is left still, the suspended particles gradually sink due to the effect of the gravity field. The heavier the particle, the faster it sinks, and conversely, particles with a density less than the liquid will float. The speed at which particles move under the gravity field is related to the size, shape and density of the particles, and is also related to the strength of the gravity field and the viscosity of the liquid. Centrifuges work based on this principle.

An existing centrifuge rotor, as shown in FIG1 , includes a cylindrical body, a plurality of jacks for test tubes are embedded circumferentially on the upper surface of the cylindrical body, and a connecting shaft for driving a motor is fixedly provided at the center of the bottom of the cylindrical body. When using the centrifuge rotor of this structure, the test tube is directly inserted into the jack, and then the motor is started to drive the rotor to rotate. Since the test tube is not blocked, liquid overflow is likely to occur during rotation. And some test tubes have an outer diameter smaller than the inner diameter of the jack, and the test tube will shake, further exacerbating the problem of liquid overflow, and in severe cases, the test tube may rupture. The Chinese utility model patent with application number 202322570515.2 discloses a centrifuge rotor, including a centrifuge rotor body, a plurality of storage slots for erecting test tube containers are vertically fixed around the top surface of the centrifuge rotor body, and the plurality of storage slots are evenly distributed circumferentially about the center of the top surface of the centrifuge rotor body; a disassembly assembly is coaxially installed in the middle of the top surface of the centrifuge rotor body, and a top pressure plate is coaxially fixed to a part of the lower part of the disassembly assembly.

The above patent can detachably fix the top pressure plate coaxially above the top surface of the centrifuge rotor body by means of axial sliding cooperation between the matching sleeve and the matching rod and radial sliding cooperation between the limiting rod and the limiting hole. The fixing combination of the top pressure plate on the top of the centrifuge rotor body is simple and easy to operate. Then, the setting of the top pressure plate can press the test tube container into the storage slot from the top to prevent leakage due to excessive tilting. However, the test tube is blocked by setting a pressure plate and a pressure sleeve on the top. However, the pressure sleeve cannot be replaced and can only adapt to test tubes of one specification. The pressure plate is adjusted in height up and down by the limiting rod and the limiting hole. However, the limiting holes are set at intervals up and down and cannot accurately adapt to the blocking of test tubes of different heights.

Utility Model Content

In view of the deficiencies in the prior art, the utility model provides a centrifuge rotor that can fix and seal test tubes of multiple specifications. The rotor can seal and limit test tubes of multiple specifications to avoid liquid leakage during rotation, effectively solving the problems raised in the background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a centrifuge rotor capable of fixing and sealing test tubes of various specifications, comprising a cylinder, a plurality of jacks cooperating with the test tubes are circumferentially embedded on the upper surface of the cylinder, a connecting shaft cooperating with the driving motor is fixedly arranged at the center position of the bottom of the cylinder, a fixing rod is fixedly arranged at the center position of the upper surface of the cylinder, the fixing rod is cylindrical, and a collar is slidably sleeved on the fixing rod up and down, a first limiting bolt cooperating with the fixing rod is screwed inwardly on the outer side of the collar, cross bars matching the number of jacks are fixedly arranged at intervals on the outer surface of the collar, a limiting piece cooperating with the outer surface of the test tube is fixedly arranged on the outer end of the cross bar, and a test tube sealing structure with replaceable test tube caps and adjustable height up and down is also fixedly arranged on the cross bar inside the limiting piece.

As a preferred technical solution, a vertical rectangular groove for limiting the inner end of the first limiting bolt is embedded in the side surface of the fixing rod.

As a preferred technical solution, the side surfaces where the long sides of the rectangular groove are located are in contact with the two sides of the inner end of the first limiting bolt.

As a preferred technical solution, the limiting member comprises a circular ring, the inner outer surface of the circular ring is fixedly connected to the outer end of the cross bar, and transverse flexible clips are fixedly provided at circumferential intervals on the inner surface of the circular ring.

As a preferred technical solution, an arc-shaped notch is provided at the inner end of the flexible clip.

As a preferred technical solution, the test tube blocking structure includes a horizontal support rod, a vertical coil is fixedly provided on the bottom surface of the outer end of the support rod, a sleeve with a lower opening is fixedly provided on the bottom surface of the coil, a test tube cap with an opening facing downward is provided below the sleeve, an insertion rod is fixedly provided at the center position of the upper surface of the test tube cap, the insertion rod can be slid upward and inserted into the sleeve, and a second limiting bolt is screwed inwardly on the outer side of the sleeve;

The inner end of the support rod is inserted into the vertical strip through hole of the vertical plate, and an annular limit plate is fixed on the support rod outside the strip through hole. The support rod outside the strip through hole is a screw rod, and a locking nut is screwed on the screw rod. The bottom of the vertical plate is fixed to the upper surface of the cross bar.

As a preferred technical solution, the support rod is cylindrical, and its two side surfaces are slidably matched with the inner surface of the strip-shaped through hole.

As a preferred technical solution, a suction cup with an upper opening is fixedly provided at the center position of the inner bottom surface of the socket.

Compared with the prior art, the utility model provides a centrifuge rotor that can fix and seal test tubes of multiple specifications, and has the following beneficial effects:

1. The utility model includes a circular ring through a limiting member, the inner outer surface of the circular ring is fixedly connected to the outer end of the cross bar, and the inner surface of the circular ring is fixedly provided with transverse flexible clips at intervals in the circumferential direction. When in use, the circular ring can be sleeved on the outer side of the test tube, and the flexible clips are deformed to elastically clamp the test tube, which is suitable for test tubes of different specifications and avoids shaking of the test tube.

2. The utility model is also provided with a test tube blocking structure with replaceable test tube caps and adjustable heights up and down on the cross bar on the inner side of the limiter. When in use, the test tube cap on the upper side can block the test tube to prevent leakage, and the snake can adjust the angle of the test tube cap. Test tube caps of different sizes can be replaced by the second limit bolt to suit test tubes of different specifications, and the left end of the cross bar can be adjusted in height vertically to adapt to test tubes of different heights.

3. The utility model has a ring that can be slid up and down on the fixed rod, and a first limiting bolt that cooperates with the fixed rod is screwed inward on the outer side of the ring. When in use, the upper and lower heights of the ring can be adjusted by the first limiting bolt, which is beneficial for the limiting member to fix test tubes of different heights.

4. The utility model also fixes a suction cup with an upper opening at the center of the bottom surface of the jack. When in use, the suction cup can adsorb and fix the test tube at the center of the bottom surface of the jack, further preventing the test tube from shaking, and can play a buffering role at the bottom when the test tube is placed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

FIG1 is an enlarged structural schematic diagram of an existing centrifuge rotor;

FIG2 is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model;

FIG3 is an enlarged structural diagram of the collar, crossbar, stopper and test tube plugging structure in FIG1 ;

FIG4 is an enlarged schematic diagram of the coordination between the stopper and the test tube plugging structure;

FIG5 is an enlarged schematic diagram of the test tube plugging structure;

FIG6 is an enlarged schematic diagram of the structure of the test tube cap and the sleeve;

FIG. 7 is a schematic diagram of the three-dimensional structure of the second embodiment of the present utility model.

Indications in the figure: 1. Cylinder; 11. Socket; 12. Suction cup; 2. Connecting shaft; 3 Fixing rod; 31. Rectangular groove; 4 Ring; 41. First limiting bolt; 5. Cross bar; 6. Limiting piece; 61. Ring; 62. Flexible clip; 621. Arc-shaped notch; 7. Test tube sealing structure; 71. Support rod; 711. Limiting plate; 72. Coil; 73. Sleeve; 74. Second limiting bolt; 75. Test tube cap; 751. Insert rod; 76. Vertical plate; 77. Strip through hole; 78. Locking nut.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Example 1

As shown in Figures 2 to 6, a centrifuge rotor that can fix and seal test tubes of multiple specifications includes a cylinder 1, a plurality of sockets 11 that cooperate with the test tubes are circumferentially embedded on the upper surface of the cylinder 1, a connecting shaft 2 that cooperates with the drive motor is fixedly provided at the center position of the bottom of the cylinder 1, a fixing rod 3 (welded) is fixedly provided at the center position of the upper surface of the cylinder 1, the fixing rod 3 is cylindrical, and a collar 4 is slidably sleeved on the fixing rod 3 up and down, a first limiting bolt 41 that cooperates with the fixing rod 3 is screwed inwardly on the outer side of the collar 4, cross bars 5 (facing the sockets 11) that match the number of the sockets 11 are fixedly provided at intervals on the outer surface of the collar 4, a limiting piece 6 that cooperates with the outer surface of the test tube is fixedly provided at the outer end of the cross bar 5, and a test tube sealing structure 7 with a replaceable test tube cap 75 and adjustable height up and down is also fixedly provided on the cross bar 5 on the inner side of the limiting piece 6.

A vertical rectangular groove 31 (extending upward to the top surface) for limiting the inner end of the first limiting bolt 41 is embedded in the side surface of the fixing rod 3 .

The side surfaces where the long sides of the rectangular groove 31 are located are in contact with the two sides of the inner end of the first limiting bolt 41 .

The limiting member 6 includes a circular ring 61, the outer surface of the inner side of the circular ring 61 (the side facing the fixed rod 3) is fixedly connected to the outer end of the cross bar 5, and the inner surface of the circular ring 61 is fixedly provided with transverse flexible clips 62 (silicone sheets can be used to increase the friction with the outer side of the test tube) at circumferential intervals.

An arc-shaped notch 621 is provided at the inner end of the flexible clip 62 to facilitate the cooperation with the outer side of the test tube.

The test tube blocking structure 7 includes a horizontal support rod 71, a vertical coil 72 is fixedly provided on the bottom surface of the outer end of the support rod 71, a sleeve 73 with a lower opening is fixedly provided on the bottom surface of the coil 72, a test tube cap 75 with an opening facing downward is provided below the sleeve 73, an insert rod 751 is fixedly provided at the center position of the upper surface of the test tube cap 75, the insert rod 751 can be slidably inserted into the sleeve 73 upward, a second limiting bolt 74 is screwed inwardly on the outer side of the sleeve 73, the inner end of the support rod 71 is inserted into the vertical strip through hole 77 of the vertical plate 76 (located on the upper side of the vertical plate 76), an annular limiting plate 711 is fixedly provided on the support rod 71 on the outer side of the strip through hole 77 (towards the side of the coil 72), the support rod 71 on the inner side of the strip through hole 77 (towards the fixed rod 3) is a screw, a locking nut 78 is screwed on the screw, and the bottom of the vertical plate 76 is fixed to the upper surface of the cross bar 5.

The support rod 71 is cylindrical, and its two side surfaces are slidably matched with the inner surface of the strip-shaped through hole 77 .

When in use, first loosen the first limiting bolt 41 to allow the limiting member 6 to rotate toward the side of the insertion hole 11, then insert the test tube (not shown) into the insertion hole 11, then pull the limiting member 6 (connecting ring 4) upward and rotate it back to the top of the test tube 11, then put the ring 61 downward on the outer side of the test tube and limit the ring 4 by the first limiting bolt 41, so that the flexible clip 62 is deformed, which can play an elastic clamping role on the test tube, suitable for test tubes of different specifications, and avoid shaking of the test tube. The test tube cap 75 on the upper side can block the test tube, and the coil 72 can adjust the angle of the test tube cap 75; when removing, the test tube cap 75 can be opened first, and then the first limiting bolt 41 can be loosened, and the collar 4 can be removed upward from the fixing rod 3, and then the collar 4 can be held with one hand, and the other hand can be pulled downward in sequence to take out the test tube; the test tube caps 75 of different sizes can be replaced by the second limiting bolt 74, so as to be suitable for test tubes of different specifications, and the left end of the cross bar 71 can be adjusted vertically in height (loosening the locking nut 78, the cross bar 71 can slide up and down), so as to adapt to test tubes of different heights. The upper and lower heights of the collar 4 can be adjusted by the first limiting bolt 41, which is conducive to the fixing of test tubes of different heights by the limiting member 6.

Example 2

As shown in FIG. 7 , a suction cup 12 with an upper opening is fixedly provided at the center of the inner bottom surface of the insertion hole 11 .

When in use, the suction cup 12 can play an adsorption and fixing role on the test tube at the center position of the bottom surface of the jack 11, further preventing the test tube from shaking. A suction cup 12 with a smaller diameter can be selected, and the adsorption force is relatively small, which is convenient for pulling up to take out the test tube.

The components used in the present invention are all common standard components or components known to those skilled in the art, and their structures and principles are well known to those skilled in the art.

It should be noted that, in this article, the directions or positional relationships indicated by the terms "first", "second", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A centrifuge rotor capable of fixing and sealing test tubes of multiple specifications, comprising a cylinder, a plurality of jacks cooperating with the test tubes are circumferentially embedded on the upper surface of the cylinder, a connecting shaft cooperating with the driving motor is fixedly arranged at the center position of the bottom of the cylinder, and the characteristic is that a fixing rod is fixedly arranged at the center position of the upper surface of the cylinder, the fixing rod is cylindrical, and a collar is slidably sleeved on the fixing rod up and down, a first limiting bolt cooperating with the fixing rod is screwed inwardly on the outer side of the collar, cross bars matching the number of jacks are fixedly arranged at intervals on the outer surface of the collar, a limiting piece cooperating with the outer surface of the test tube is fixedly arranged at the outer end of the cross bar, and a test tube sealing structure with replaceable test tube caps and adjustable height up and down is also fixedly arranged on the cross bar inside the limiting piece. 2. A centrifuge rotor capable of fixing and sealing test tubes of various specifications according to claim 1, characterized in that a vertical rectangular groove for limiting the inner end of the first limiting bolt is embedded in the side surface of the fixing rod. 3. A centrifuge rotor capable of fixing and sealing test tubes of various specifications according to claim 2, characterized in that the side surfaces where the long sides of the rectangular groove are located are in contact with the two sides of the inner end of the first limiting bolt. 4. A centrifuge rotor capable of fixing and sealing test tubes of various specifications according to claim 1, characterized in that: the limiting member comprises a circular ring, the inner outer surface of the circular ring is fixedly connected to the outer end of the cross bar, and the inner surface of the circular ring is fixedly provided with transverse flexible clips at intervals in the circumferential direction. 5. A centrifuge rotor capable of fixing and sealing test tubes of various specifications according to claim 4, characterized in that an arc-shaped notch is provided at the inner end of the flexible clip. 6. A centrifuge rotor capable of fixing and plugging test tubes of various specifications according to claim 1, characterized in that: the test tube plugging structure comprises a horizontal support rod, a vertical coil is fixedly provided on the bottom surface of the outer end of the support rod, a sleeve with a lower opening is fixedly provided on the bottom surface of the coil, a test tube cap with an opening facing downward is provided below the sleeve, a plug is fixedly provided at the center position of the upper surface of the test tube cap, the plug can be slid upward and inserted into the sleeve, and a second limit bolt is screwed inwardly on the outer side of the sleeve; The inner end of the support rod is inserted into the vertical strip through hole of the vertical plate, and an annular limit plate is fixed on the support rod outside the strip through hole. The support rod outside the strip through hole is a screw rod, and a locking nut is screwed on the screw rod. The bottom of the vertical plate is fixed to the upper surface of the cross bar. 7. A centrifuge rotor capable of fixing and sealing test tubes of various specifications according to claim 6, characterized in that the support rod is cylindrical, and its two side surfaces are slidably matched with the inner surface of the strip-shaped through hole. 8. A centrifuge rotor capable of fixing and sealing test tubes of various specifications according to claim 1, characterized in that a suction cup with an upper opening is fixedly provided at the center of the inner bottom surface of the insertion hole.