CN215233775U - Variable-speed oscillation equipment - Google Patents

Abstract

The utility model discloses a variable speed oscillation equipment, include: the test tube rack comprises a test tube fixing disc and a connecting rod arranged in the center of the test tube fixing disc, a plurality of test tube positioning holes are formed in the test tube fixing disc for inserting and fixing test tubes, the test tube fixing disc is rotatably connected with a fixing cover, one side, facing the test tube fixing disc, of the fixing cover is provided with grooves in one-to-one correspondence with the test tube positioning holes, and the grooves are used for accommodating test tube opening ends located on the test tube fixing disc; the eccentric wheel is connected with the connecting rod to drive the test tube rack to oscillate; the rotary driving mechanism is used for being connected with the eccentric wheel to drive the eccentric wheel to rotate and comprises a variable speed motor. The utility model discloses a variable speed motor among the rotary driving mechanism realizes the variable speed oscillation to the test tube to make liquid flow direction and speed take place stage nature change at the oscillation in-process, improve the mixing effect.

Description

Variable-speed oscillation equipment

Technical Field

The utility model relates to a fluid oscillation technical field especially relates to a variable speed oscillation equipment.

Background

In biochemical experiments and production processes, liquid reagents are often required to be mixed and oscillated, but the existing oscillating equipment has the defects of not compact structure, larger volume and higher noise, the flowing direction and speed of liquid are not changed in the movement process due to uniform oscillation, and the uniform mixing effect is insufficient. Therefore, in view of the above problems, it is necessary to propose a further solution to solve at least one of the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a variable speed oscillation equipment to overcome the not enough that exists among the prior art.

In order to solve the technical problem, the technical scheme of the utility model is that:

a variable speed oscillating device comprising:

the test tube rack comprises a test tube fixing disc and a connecting rod arranged in the center of the test tube fixing disc, a plurality of test tube positioning holes are formed in the test tube fixing disc for inserting and fixing test tubes, the test tube fixing disc is rotatably connected with a fixing cover, one side, facing the test tube fixing disc, of the fixing cover is provided with grooves corresponding to the test tube positioning holes one by one, and the grooves are used for accommodating open ends of the test tubes on the test tube fixing disc;

the eccentric wheel is connected with the connecting rod to drive the test tube rack to oscillate;

the rotary driving mechanism is used for being connected with the eccentric wheel so as to drive the eccentric wheel to rotate, and the rotary driving mechanism comprises a variable speed motor;

wherein, the recess link up the thickness direction of fixed lid, just the diameter of recess reduces along with keeping away from the test tube fixed disk, in order to support by the test tube top.

In a preferred embodiment of the present invention, the device further comprises a lifting driving mechanism, wherein the lifting driving mechanism is used for driving the rotation driving mechanism to lift, so that the eccentric wheel on the rotation driving mechanism is connected with or separated from the connecting rod.

In a preferred embodiment of the present invention, the rotation driving mechanism further includes a rotation shaft for connecting with the eccentric wheel, a first synchronizing wheel is provided on a motor shaft of the variable speed motor, a second synchronizing wheel is provided on the rotation shaft, and a synchronous belt is connected between the first synchronizing wheel and the second synchronizing wheel.

In a preferred embodiment of the present invention, the test tube rack further comprises a first ring rack and a second ring rack, the test tube fixing tray is disposed in the first ring rack, and the test tube fixing tray can move in the first ring rack with the first diameter as an axis, the first ring rack is disposed in the second ring rack, and the first ring rack can move in the second ring rack with the second diameter of the test tube fixing tray as an axis, the first diameter is perpendicular to the second diameter.

In a preferred embodiment of the present invention, a plurality of the test tube positioning holes are arranged along the circumferential array of the connecting rods.

In a preferred embodiment of the present invention, a buffer washer is disposed in the groove for abutting against the open end of the test tube.

In a preferred embodiment of the present invention, the device further comprises a housing, an opening is disposed at the top of the housing, the eccentric wheel and the rotation driving mechanism are disposed in the housing, and are connected to the connecting rod through the opening.

In a preferred embodiment of the present invention, the lifting driving mechanism includes a motor, a screw driving assembly connected to a motor shaft of the motor, a slide rail, and a fixing plate slidably connected to the slide rail, the fixing plate is connected to the screw driving assembly, and the rotation driving mechanism is disposed on the fixing plate.

In a preferred embodiment of the present invention, the first annular frame is circular ring-shaped, and the second annular frame is semi-circular ring-shaped.

In a preferred embodiment of the present invention, the test tube fixing plate and the first annular frame, and the first annular frame and the second annular frame are connected to each other by the insertion hole and the insertion rod, and the insertion hole and the cross section of the insertion rod contacting with the insertion hole are in the shape of an arc.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a variable speed motor among the rotary driving mechanism realizes the variable speed oscillation to the test tube to make liquid flow direction and speed take place stage nature change at the oscillation in-process, improve the mixing effect.

(2) The utility model discloses a test-tube rack and rotary driving mechanism's separation setting for the test-tube rack can drive the test tube and move in whole experiment operation flow, need not manual operation and separation test tube and test-tube rack, has improved whole operating efficiency.

(3) The utility model discloses a test tube fixed disk and the fixed cooperation of covering of test-tube rack realize the stable fixed to the test tube, avoid it to take place to break away from at the oscillation in-process to further cover the recess that link up the setting through fixed, make reagent add and need not to take off the test tube, improved whole operating efficiency.

(4) The utility model discloses a rotation axis, synchronizing wheel and hold-in range and variable speed motor cooperation have realized the eccentric rotation of test tube to compact structure, noiselessness basically.

Drawings

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

Fig. 1 is a perspective view of the present invention;

fig. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic perspective view of the insertion hole and the insertion rod of the present invention;

fig. 4 is a partial perspective view of the present invention in use;

fig. 5 is a schematic partial front view of the present invention in use.

Specifically, 100, test tube racks; 110. a test tube fixing disc; 111. positioning holes of the test tubes; 120. a fixed cover; 121. a groove; 130. a connecting rod; 140. a first annular frame; 141. a jack; 150. a second annular frame; 151. inserting a rod;

200. an eccentric wheel; 210. a self-aligning bearing;

300. a variable speed motor; 310. a rotating shaft; 320. a first synchronizing wheel; 330. a second synchronizing wheel; 340. a synchronous belt;

400. a motor; 410. a lead screw drive assembly; 420. a slide rail; 430. a fixing plate;

500. a housing; 501. an opening;

600. test tubes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the scope of the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1:

as shown in fig. 1 and 2, a variable speed oscillation apparatus includes a test tube rack 100 for holding test tubes 600, an eccentric 200 for achieving eccentricity, and a rotation driving mechanism for driving the eccentric 200 to rotate. The rotation driving mechanism provides rotation power, and the test tube rack 100 drives the test tubes 600 to synchronously oscillate.

Specifically, the rotation driving mechanism is connected to the eccentric 200 to rotate the eccentric 200. The rotation driving mechanism comprises a variable speed motor 300, and the variable speed oscillation of the test tube 600 is realized through the variable speed motor 300, so that the flowing direction and the flowing speed of the liquid are changed in stages in the oscillation process, and the uniform mixing effect is improved. More specifically, the variable speed motor 300 cyclically changes the speed in the order of acceleration-high speed uniform speed-deceleration-low speed uniform speed.

In this embodiment, the test tube rack 100 includes a test tube fixing plate 110 and a connecting rod 130 disposed at the center of the test tube fixing plate 110. The test tube fixing plate 110 is provided with a plurality of test tube positioning holes 111 for inserting and fixing the test tubes 600. As shown in fig. 5, the open end of the test tube 600 in this embodiment has an external thread to detachably connect the test tube cover, so that the test tube 600 can be prevented from falling off from the test tube positioning hole 111 by the external thread, and of course, the test tube positioning hole 111 can be provided with an inner diameter such as an elastic ring to clamp the outer wall of the test tube 600. A plurality of test tube locating holes 111 are preferably arranged along the circumferential array of connecting rod 130 to conveniently set up the distance between adjacent test tube locating holes 111, avoid test tube 600 to collide.

The test tube fixing disc 110 is rotatably connected with a fixing cover 120, in this embodiment, a fixing cover bracket is fixed on the edge of the test tube fixing disc 110, and the fixing cover 120 is rotatably connected with the fixing cover bracket. Further, fixed lid 120 offers the recess 121 with test tube locating hole 111 one-to-one towards one side of test tube fixed disk 110, and recess 121 is used for holding the test tube 600 open end that is located on test tube fixed disk 110, supports through recess 121 bottom surface and leans on the open end of test tube 600 to avoid test tube 600 excessive rebound in the oscillation process, cause and break away from test-tube rack 100. Still further, the groove 121 penetrates through the thickness direction of the fixing cover 120 to facilitate the addition of reagents when the test tube 600 is fixed on the test tube rack 100, thereby improving the overall operation efficiency. At this time, the diameter of the groove 121 is reduced as it is away from the test tube fixing disk 110 to abut against the top end of the test tube 600. The diameter of the groove 121 may be tapered, or stepped. Recess 121 diameter is cascaded reduction in this embodiment to make things convenient for the installation buffering packing ring, support through buffering packing ring and lean on the test tube 600 open end, avoid its damage, and lay for test tube 600 and provide certain buffering space.

The test tube rack 100 may further be provided with a sealing cover for sealing the test tube 600, and the sealing cover is rotatably or slidably connected or detachably connected with the test tube rack 100. In this embodiment, the sealing cover may refer to the arrangement structure of the fixing cover 120, that is, the sealing cover is rotatably connected to the test tube fixing plate 110. In order to enable the test tube 600 to achieve the alternation of the open state and the sealed state, it is preferable that the test tube fixing disk 110 is provided with both a sealing cover and a fixing cover 120, and the sealing cover is movable relative to the fixing cover 120 so that the test tube 600 communicates with the outside through the groove 121 of the fixing cover 120.

In this embodiment, the eccentric 200 is connected to the connecting rod 130 for driving the test tube rack 100 to oscillate. Meanwhile, the rotation driving mechanism further comprises a rotating shaft 310 connected with the eccentric wheel 200, a first synchronizing wheel 320 is arranged on a motor shaft of the speed changing motor 300, a second synchronizing wheel 330 is arranged on the rotating shaft 310, a synchronous belt 340 is connected between the first synchronizing wheel 320 and the second synchronizing wheel 330, and the belt transmission enables the device to be compact in structure and basically free of noise during operation.

This equipment still includes lifting drive mechanism, and lifting drive mechanism is used for driving rotary drive mechanism to make eccentric wheel 200 in the rotary drive mechanism be connected or break away from with connecting rod 130, test-tube rack 100 and eccentric wheel 200 and rotary drive mechanism separation set up promptly, make test-tube rack 100 can drive test tube 600 and move in whole experiment operation flow, need not manual operation and separation test tube 600 and test-tube rack 100, improved whole operating efficiency. Specifically, the lifting driving mechanism includes a motor 400, a screw transmission assembly 410 connected to a motor shaft of the motor 400, a slide rail 420, and a fixing plate 430 slidably connected to the slide rail 420, the fixing plate 430 is connected to the screw transmission assembly 410, and the rotation driving mechanism is disposed on the fixing plate 430, and precisely controls a lifting distance of the rotation driving mechanism through screw transmission so as to be accurately abutted to the connecting rod 130.

The apparatus further comprises a housing 500, wherein an opening 501 is formed at the top of the housing 500, and the eccentric 200 and the rotation driving mechanism are disposed in the housing 500 and connected to the connecting rod 130 through the opening 501, in order to match the test tube rack 100 and the eccentric 200 and the rotation driving mechanism.

Example 2:

in this embodiment, as shown in fig. 1, the test tube rack 100 further includes a first annular frame 140 and a second annular frame 150. Generally, the first annular frame 140 is annular and the second annular frame 150 is semi-annular. The test tube fixing disk 110 is disposed in the first annular frame 140, and the test tube fixing disk 110 can rotate in the first annular frame 140 with the first diameter of the test tube fixing disk 110 as an axis. The first annular shelf 140 is disposed in the second annular shelf 150, and the first annular shelf 140 can rotate in the second annular shelf 150 about the second diameter of the test tube fixing disk 110. The first diameter is perpendicular to the second diameter. With this arrangement, the test tube holder 100 is in a fixed state, and the test tube fixing tray 110 is oscillated. Generally, the test tube rack 100 is fixed to other structures, such as a moving mechanism, by the second annular frame 150, so as to place the test tubes 600 at a time, and the whole process is automatically performed without replacing the test tube rack 100 of the corresponding device. Of course, without being limited thereto, the test tube rack 100 may also rotate around the rotation axis 310 in synchronization with the connection rod 130, and the rotation track thereof is a circle.

Specifically, as shown in fig. 3, the test tube fixing disk 110 and the first annular frame 140, and the first annular frame 140 and the second annular frame 150 are respectively engaged with the insertion rods 151 through the insertion holes 141 to be rotatably connected, and the insertion holes 141 and the insertion rods 151 in contact therewith, i.e., the insertion rods 151 inserted into the insertion holes, are arcuate in cross section, and the insertion rods 151 of the remaining portion are circular in cross section and are connected with bearings to reduce friction and achieve stable rotation of the test tube fixing disk 110. Further, the arcuate portion of plunger 151 abuts the fastener to increase the relative repose of plunger 151 and socket 141, preventing rotation of plunger 151 within socket 141.

Example 3:

in addition to the above embodiments, in the present embodiment, as shown in fig. 1, a self-aligning bearing 210 is connected to the test tube rack 100. The self-aligning bearing 210 is eccentrically connected to the eccentric wheel 200, so that the axis of the test tube rack 100 is tilted with respect to the axis of the eccentric wheel 200, i.e., a tilted eccentric rotation is achieved, thereby further improving the mixing uniformity. Specifically, the connecting rod 130 is connected to the self-aligning bearing 210, and the lifting driving mechanism is used to drive the rotation driving mechanism, so that the eccentric wheel 200 on the rotation driving mechanism is connected to or separated from the self-aligning bearing 210, and more specifically, a limiting seat for accommodating the self-aligning bearing 210 is eccentrically disposed on the eccentric wheel 200. It can be understood that the bearing seat is provided outside the self-aligning bearing 210, that is, the spacing seat is provided with a receiving groove matched with the bearing seat by the inward concave of the top surface of the spacing seat, and meanwhile, the contact surface of the spacing seat and the receiving groove is preferably a matched curved surface to improve the rotation fluency of the connecting rod 130. Preferably, the contact surface of the limiting seat and the self-aligning bearing 210 is a flexible surface. For example, a buffer pad is disposed in the accommodating groove so as to be stably contacted with the self-aligning bearing 210 by the driving of the lifting driving mechanism and to drive the connecting rod 130 to rotate by the driving of the lifting driving mechanism. Further, the axis of test tube 600 is parallel with the axis of test-tube rack 100, and that is the test tube 600 inclines in step, and the test-tube rack 100 that the slope set up has increased test tube 600 vibration amplitude to improve the oscillation effect. Still further, the test tube rack 100 is deviated towards the direction of keeping away from the axis of the eccentric wheel 200, as shown in fig. 5, that is, the test tube 600 is deviated towards the direction of keeping away from the axis of the eccentric wheel 200, at this moment, the connecting rod 130 is slidably connected with the self-aligning bearing 210, that is, the length of the connecting rod 130 extending out of the self-aligning bearing 210 can be automatically adjusted along with the rotation of the connecting rod, so as to be matched with the stationary phase of the second ring frame 150, the test tube fixing plate 110 is deflected around the connection point of the test tube fixing plate 110 and the connecting rod 130, and the test tube 600 deviated towards the direction of keeping away from the axis of the eccentric wheel 200 makes the oscillation path of the test tube 600 asymmetric on both sides of the axis of the eccentric wheel 200, so that the liquid moving path in the test tube 600 is more changeable, and the uniform mixing effect is further improved.

As shown in fig. 5, the test tube 600 is tilted synchronously with its axis y, i.e. the test tube 600 has a higher a-side and a lower b-side opposite to it, the liquid level in the test tube 600 when not rotating is x, and the distance of the liquid near the b-side from the top of the test tube 600 is undoubtedly reduced. In this embodiment, the test tube 600 is preferably top-sealed, i.e. can be provided with a sealing cover as in embodiment 1, or the test tube 600 itself is covered with a test tube cover, so that when rotating, especially the liquid near the b side is easy to contact the sealing cover or the test tube cover at the top of the test tube 600 in the oscillation process, and then turned to the other side by the sealing cover or the test tube cover, thereby improving the mixing efficiency and effect. Especially, the variable speed motor 300 drives the rotation direction of the test tube rack 100 to be matched with the inclination direction of the test tube rack 100, so that the liquid in the test tube 600 on the test tube rack 100 moves towards the direction close to the low side of the test tube in the acceleration stage, i.e. moves towards the direction close to the side b, and then the rolling is realized, thereby improving the mixing effect in the initial stage of mixing, further shortening the mixing time, and improving the mixing efficiency.

Example 4:

when the equipment is adopted for oscillation, the variable speed motor 300 circularly changes speed according to the sequence of acceleration, high-speed uniform speed, deceleration and low-speed uniform speed, specifically, the high-speed rotating speed of the variable speed motor 300 is 1500-2000 rpm, and the low-speed rotating speed of the variable speed motor 300 is 1000-1400 rpm. Furthermore, the variable speed motor 300 drives the rotation direction of the test tube rack 100 to be matched with the inclination direction of the test tube rack 100, so that the liquid in the test tube 600 on the test tube rack 100 moves towards the direction close to the low side of the test tube in the acceleration stage, and the rolling is realized, thereby improving the mixing effect in the initial mixing stage, shortening the mixing time and improving the mixing efficiency.

To sum up, the utility model discloses a variable speed motor among the rotary driving mechanism realizes the variable speed oscillation to the test tube to make liquid flow direction and speed take place stage nature change at the oscillation in-process, improve the mixing effect.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A variable speed oscillating device, comprising:

the test tube rack comprises a test tube fixing disc and a connecting rod arranged in the center of the test tube fixing disc, a plurality of test tube positioning holes are formed in the test tube fixing disc for inserting and fixing test tubes, the test tube fixing disc is rotatably connected with a fixing cover, one side, facing the test tube fixing disc, of the fixing cover is provided with grooves corresponding to the test tube positioning holes one by one, and the grooves are used for accommodating open ends of the test tubes on the test tube fixing disc;

the eccentric wheel is connected with the connecting rod to drive the test tube rack to oscillate;

the rotary driving mechanism is used for being connected with the eccentric wheel so as to drive the eccentric wheel to rotate, and the rotary driving mechanism comprises a variable speed motor;

wherein, the recess link up the thickness direction of fixed lid, just the diameter of recess reduces along with keeping away from the test tube fixed disk, in order to support by the test tube top.

2. The variable speed oscillating device of claim 1, further comprising a lifting drive mechanism for lifting the rotational drive mechanism to connect or disconnect the eccentric on the rotational drive mechanism to the connecting rod.

3. The variable speed oscillating device of claim 1, wherein the rotary drive mechanism further comprises a rotating shaft for connection with the eccentric wheel, a first synchronizing wheel is provided on a motor shaft of the variable speed motor, a second synchronizing wheel is provided on the rotating shaft, and a synchronous belt is connected between the first synchronizing wheel and the second synchronizing wheel.

4. The variable speed oscillation device of claim 1, wherein the test tube rack further comprises a first annular frame and a second annular frame, the test tube fixing disk is disposed in the first annular frame, and the test tube fixing disk can move in the first annular frame with a first diameter thereof as an axis, the first annular frame is disposed in the second annular frame, and the first annular frame can move in the second annular frame with a second diameter of the test tube fixing disk as an axis, the first diameter being perpendicular to the second diameter.

5. The variable speed oscillation apparatus of claim 1 wherein a plurality of the tube alignment holes are arranged in a circumferential array along the connecting rod.

6. The variable speed oscillation apparatus of claim 1 wherein a cushion washer is disposed within the recess for abutting the test tube open end.

7. The variable speed oscillating device of claim 1 further comprising a housing having an opening in a top portion thereof, wherein the eccentric and the rotary drive mechanism are disposed within the housing and are connected to the connecting rod through the opening.

8. The variable speed oscillating device of claim 2, wherein the elevation drive mechanism comprises a motor, a lead screw drive assembly connected to a motor shaft of the motor, a slide rail, a fixed plate slidably connected to the slide rail, the fixed plate is connected to the lead screw drive assembly, and the rotational drive mechanism is disposed on the fixed plate.

9. The variable speed oscillating device of claim 4, wherein the first annular frame is annular and the second annular frame is semi-annular.

10. The variable speed oscillation device of claim 4 wherein the test tube holding tray and the first annular shelf, and the first annular shelf and the second annular shelf are each coupled for rotational connection to a plunger by a receptacle, and wherein the receptacle and the plunger in contact therewith are arcuate in cross-section.

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