CN111185111B

CN111185111B - Multifunctional laboratory stirrer

Info

Publication number: CN111185111B
Application number: CN202010037032.4A
Authority: CN
Inventors: 司风玲
Original assignee: Chongqing Normal University
Current assignee: Chongqing Normal University
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2022-01-28
Anticipated expiration: 2040-01-14
Also published as: CN111185111A

Abstract

The invention discloses a multifunctional laboratory stirrer, which belongs to the field of experimental equipment and comprises a base (100), a support (200), a first motor box (300) and a stirring rod (400), wherein the base (100) is used for fixing the stirrer, the support (200) is fixedly connected with the base (100), the first motor box (300) is fixed on the support (200), the first motor box (300) is connected with the stirring rod (400), and the first motor box (300) drives the stirring rod to rotate so as to complete stirring.

Description

Multifunctional laboratory stirrer

Technical Field

The invention relates to the field of laboratory stirrers.

Background

The stirrer makes liquid and gas medium flow in a forced convection mode and mix uniformly. The type, size and speed of rotation of the stirrer all have an effect on the distribution of the stirring power between bulk flow and turbulent pulsation. In general, the power distribution of a turbine-type agitator is favorable for turbulent pulsation, while a propeller-type agitator is favorable for bulk flow. For the same type of stirrer, under the same power consumption condition, the power of the stirrer with large diameter and low rotating speed is mainly consumed in the overall flow, so that the macroscopic mixing is facilitated. The power of the small-diameter high-rotation-speed stirrer is mainly consumed by turbulent pulsation, so that micromixing is facilitated.

Need stir the medium of difference in the laboratory, because the difference of medium performance, need select for use the stirring head of different models, but current agitator is the integral type, needs change different agitators according to the medium of difference, consequently, lacks the agitator that can stir multiple medium among the prior art.

Disclosure of Invention

The invention aims to: to the problem that above-mentioned exists, disclose a multi-functional laboratory agitator, including base, support, first motor case, puddler, the base is used for fixed agitator, support and base fixed connection are fixed with first motor case on the support, and first motor case and puddler are connected, and first motor case drive puddler rotates and then accomplishes the stirring.

The stirring rod of the invention comprises:

the first stirring shaft is fixedly connected with the first motor box and driven to rotate by the first motor box, two concave parts are arranged on the section of the first stirring shaft, the first stirring shaft further comprises a first rotating rod and a second rotating rod, the first rotating rod and the second rotating rod are respectively hinged to the section of the first stirring shaft, and the tail ends of the first rotating rod and the second rotating rod are respectively provided with a joint part;

the end of the second stirring shaft is provided with two convex parts which can be inserted into the two concave parts of the first stirring shaft, the side surfaces of the two convex parts are respectively provided with a combination groove, the first rotating rod and the second rotating rod can be driven to rotate, when the first rotating rod and the second rotating rod rotate, the combination part can be inserted into the combination grooves to fix the first stirring shaft and the second stirring shaft, and the combination part can be separated from the combination grooves to separate the first stirring shaft and the second stirring shaft;

and the stirring head is fixedly connected with the second stirring shaft and is used for directly stirring the object.

In a preferred embodiment, the first rotating rod and the second rotating rod are both provided with movable grooves, the first stirring shaft further comprises a moving head, the moving head is provided with a moving column, the moving column is clamped into the movable grooves of the first rotating rod and the second rotating rod and can move along the two movable grooves, and the moving column moves along the two movable grooves to drive the first rotating rod and the second rotating rod to rotate.

In a preferred embodiment, the moving head is connected with a moving rod, and the moving rod can be driven to drive the moving column to move along the moving groove through the moving head.

In a preferred embodiment, the outer surface of the first stirring shaft is a shell, and the moving rod is connected with a shell screw.

In a preferred embodiment, the end of the moving rod can be exposed out of the shell, and the end of the moving rod is provided with a cross-shaped opening.

In a preferred embodiment, the motion bar is capable of rotating with respect to the motion head about an axis of the motion bar.

In a preferred embodiment, the motion rod and the motion head are connected by a bearing.

Drawings

FIG. 1 is a schematic view of the construction of the mixer of the present invention;

FIG. 2 is a schematic view of a stir bar;

FIG. 3 is a schematic view of a first agitator shaft and a second agitator shaft;

FIG. 4 is a schematic view of a first agitator shaft;

FIG. 5 is a schematic view of a motion bar;

FIG. 6 is a schematic view of a second agitator shaft;

FIG. 7 is a schematic view of a joint;

FIG. 8 is a schematic view of a joint;

FIG. 9 is a schematic view of another embodiment of the present invention;

FIG. 10 is a schematic view of the drive member;

FIG. 11 is a schematic view of a moving member;

FIG. 12 is a schematic view of a stent;

FIG. 13 is a schematic view of example 3;

FIG. 14 is a schematic view of example 3;

the labels in the figure are: the labels in the figure are: 100-base, 200-support, 210-screw channel, 300-first motor case, 400-stirring rod, 410-first stirring shaft, 411-concave part, 412-first rotating rod, 413-second rotating rod, 414-movable groove, 415-joint part, 416-moving head, 417-moving rod, 418-shell, 419-moving column, 420-second stirring shaft, 421-convex part, 422-joint groove, 430-stirring head, 500-moving part, 510-sliding block, 520-second motor case, 530-connecting piece, 540-adjusting sliding block, 550-connecting rod, 600-driving piece, 610-driving body, 620-screw, 630-power piece, 640-moving channel, 650-adjusting knob.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Example 1: as shown in fig. 1, the invention discloses a multifunctional laboratory stirrer, which comprises a base 100, a support 200, a first motor box 300 and a stirring rod 400, wherein the base 100 is used for fixing the stirrer, the support 200 is fixedly connected with the base 100, the first motor box 300 is fixed on the support 200, the first motor box 300 is connected with the stirring rod 400, and the first motor box 300 drives the stirring rod to rotate so as to complete stirring.

In a preferred embodiment of the present invention, as shown in fig. 2 and 3, the stirring rod includes a first stirring shaft 410, a second stirring shaft 420 and a stirring head 430. First (mixing) shaft and first motor case fixed connection, first (mixing) shaft is rotated by the drive of first motor case. As shown in fig. 4, the first stirring shaft has two concave portions 411 in cross section, and correspondingly, as shown in fig. 6, the second stirring shaft has two convex portions 421 at the end, which can be inserted into the two concave portions of the first stirring shaft. Preferably, the cross section of the convex part is the same as that of the concave part, and both the convex part and the concave part are crescent-shaped, and the combination of the two concave parts and the convex part ensures that the first stirring shaft and the second stirring shaft are more stable.

In order to fix the convex part in the concave part, as shown in fig. 4, the first stirring shaft further comprises a first rotating rod 412 and a second rotating rod 413, as shown in fig. 4, the first rotating rod and the second rotating rod are respectively hinged on the cross section of the first stirring shaft, and the ends of the first rotating rod and the second rotating rod are provided with a joint part 415; accordingly, as shown in fig. 6, the side surfaces of the two protruding portions are provided with coupling grooves 422, the first rotating rod and the second rotating rod can be driven to rotate, when the first rotating rod and the second rotating rod rotate, the coupling portions can be inserted into the coupling grooves 422 to fix the first stirring shaft and the second stirring shaft, therefore, the shapes of the coupling grooves and the coupling portions are matched, the coupling grooves are large enough to enable the coupling portions to be inserted into the coupling grooves, and when the lengths of the protruding portions and the recessed portions are matched to enable the protruding portions to contact the bottoms of the recessed portions, the positions of the coupling portions and the coupling grooves just correspond to each other to enable the coupling portions to be inserted into the coupling grooves. In a more preferred embodiment, as shown in fig. 7, the edge where the combining part 415 and the combining groove 422 contact is in a shape of a reduced section such that the combining part and the combining groove are fixed more tightly as the combining part is deeper into the combining groove; similarly, in another preferred embodiment, as shown in fig. 8, the coupling groove may have a shape with a smaller cross section as going inward, and the coupling portion may be inserted into the coupling groove as going deeper, the coupling portion and the coupling groove may be fixed more tightly, and the coupling portion and the coupling groove may have a slight error.

The combination part can be separated from the combination groove so that the first stirring shaft and the second stirring shaft are separated; the stirring head 430 is fixedly connected with the second stirring shaft, and the stirring head is used for directly stirring the object.

In a more preferred embodiment, as shown in fig. 4, the first rotating rod 412 and the second rotating rod 413 are both provided with a movable slot 414, the first stirring shaft further includes a moving head 416, the moving head is provided with a moving column 419, the moving column is clamped into the movable slots of the first rotating rod and the second rotating rod and can move along the two movable slots, and the moving column moves along the two movable slots to drive the first rotating rod and the second rotating rod to rotate. Specifically, with the second rotating lever 413, when the moving column moves in the moving slot in the X direction, the coupling portion rotates in the X1 direction so that the coupling portion can be engaged with the coupling slot. Likewise, when the motion post is moved against the direction of X1, the coupling portion is rotated against the direction of X1, which is not an absolute direction in this case, but is parallel to the direction of the movable groove.

In the preferred embodiment, the moving head 416 is connected to a moving rod 417, the moving rod can be driven to drive the moving column to move along the moving slot through the moving head, the outer surface of the first stirring shaft is a shell 418, and the moving rod 417 is connected to a shell screw. The motion bar rotates, the motion bar is driven to move in its axial direction, and further the motion head 416 is driven to reciprocate in the axial direction of the motion bar.

In a more preferred embodiment, in order to rotate the moving rod, the end of the moving rod can be exposed out of the shell, the end of the moving rod is provided with a cross-shaped opening, the cross-shaped opening drives the moving rod to rotate through the operation of an external tool, in a preferred embodiment, when the combining part is inserted into the combining groove, the moving rod is not exposed out of the shell, and when the combining part is extracted from the combining groove, the moving rod is exposed out of the shell, so that the operation is convenient, and the use of the stirrer is not influenced.

In a more preferred embodiment, the motion bar is capable of rotating about its axis relative to the motion head 416. this can be accomplished in a number of ways, and in one embodiment, the motion bar and the motion head are coupled by a bearing that allows the motion bar to rotate relative to the motion head while limiting axial movement of the motion bar and the motion bar of the motion head.

In the invention, some hard materials are sometimes included in the stirred materials, so the stirring head of the invention needs higher strength, therefore, in some embodiments, the stirring head adopts a high-performance copper alloy, the raw materials of the copper alloy comprise 100 parts of copper, 0.01-1 part of Zn, 0.01-1 part of Fe, 0.02-0.2 part of nano silicon nitride, 0.03-0.05 part of Sc and 0.001-0.01 part of rare-earth element Ga by weight, the raw material copper is at least 99% of high-purity copper, the raw material copper is melted in the preparation process, other nano silicon nitride is added for stirring, and the silicon nitride can be fully dispersed in the melted metal to prevent aggregation. And solidifying and post-treating the stirred molten metal to obtain the high-performance copper alloy, wherein the bending strength of the copper alloy reaches over 1800Mpa, the hardness of the copper alloy reaches over 500HV, and the copper alloy can effectively keep stable size and is not easy to break during stirring.

Example 2:

in this embodiment, the invention discloses a laterally movable stirrer, as shown in fig. 9, the stirrer of this embodiment includes a base 100, a support 200, a driving member 600, a moving member 500 and a stirring member 400, the base is fixed with the support 200, the support is vertically arranged, the support 200 is provided with the driving member 600, the driving member is connected with the moving member 500, the driving member can drive the moving member to move along a first direction, the first direction is a horizontal direction, and the first direction is an axial direction of the support and is vertical; stirring piece and moving member fixed connection, driving piece drive moving member move and then drive stirring piece and move along the horizontal direction along first direction.

Specifically, as shown in fig. 10, the driving member 600 includes a driving body 610, a screw 620, and a power member 630, the driving body 610 is fixedly connected to the support, a cavity is disposed in the driving body, the screw 620 is disposed in the cavity, an axial direction of the screw is distributed along a first direction, the screw is in threaded connection with the moving member 500, and the screw can be driven by the power member to axially rotate to drive the moving member to move along the first direction.

Specifically, as shown in fig. 11, the moving member 500 includes a sliding block 510, a second motor box 520 and a connecting member 530, the connecting member connects the sliding block and the second motor box 520, the sliding block is located in the cavity of the driving body, the second motor box is located outside the cavity of the driving body, a moving channel 640 distributed in a first direction is arranged at the bottom of the cavity of the driving body, and the connecting member passes through the moving channel and can move along the first direction in the moving channel.

In a preferred embodiment, the power member 630 is a knob that can be manually operated, and an operator manually turns the knob to turn the screw and thus move the moving member 500. In another preferred embodiment, the power member 630 is a motor, the motor is electrically controlled, the motor is mounted on the driving body and is provided with an electric wire and a base connection, the motor can be powered on and controlled, and the motor is controlled to work to rotate the screw rod so as to drive the moving member 500 to move along the first direction. The slider of the present invention can be restricted from moving only in the first direction, and in a preferred embodiment, the cavity restricts the slider from moving only in the first direction.

Further, in a preferred embodiment, as shown in fig. 12, an adjusting knob 650 is provided on the driving member to adjust the vertical height of the driving member, which is prior art, like the prior adjusting knob.

In this embodiment, the power member 630 of the driving member can be installed at the proximal end (the end connected to the bracket) and the distal end (the end far from the bracket) of the driving member, but when installed at the distal end, the power member is installed at the proximal end of the driving member, and when the power member is installed at the proximal end, the screw rod passes through the bracket, particularly when the power member is driven by a motor, which easily causes the driving member to shake too much, so as to be a further improvement of the power member, as shown in fig. 12, a screw rod channel 210 is vertically distributed on the bracket, and the screw rod passes through the screw rod channel, as shown in fig. 12.

The stirring bar 400 according to the present invention may be an existing stirring bar, or may be a detachable stirring bar as described in embodiment 1.

When the stirring piece needs to move along the horizontal direction, the stirring piece can move horizontally only by rotating the knob or driving the power piece to rotate the screw rod, and the stirring piece does not need to be detached in the process, so that the operation is convenient, and meanwhile, the horizontal direction of the stirring piece can be finely adjusted. The moving member can be fixed on the driving member through cavity and screw rod, can effectively prevent the too big influence stirring effect of vibrations of moving member.

Embodiment 3, in the prior art, the direction of the stirring shaft is fixed, which can stir the apparatus in only one direction, which is not beneficial for the experiment, therefore, in this embodiment, the present invention discloses a rotatable stirrer, which is substantially the same as that in embodiment 2, except that the second motor box 520 of this embodiment can be driven around the second direction (such as the L direction in fig. 13, which is perpendicular to the paper surface), and the second motor box rotates around the second direction to make the stirring member rotate in response, so as to better stir the experiment apparatus in different direction positions. Specifically, as shown in fig. 13, compared with embodiment 2, the screw 620 of this embodiment is further provided with an adjusting slider 540, the adjusting slider 540 is hinged to a connecting rod 550, one end of the connecting rod is hinged to the lower end of the adjusting slider, a hinge shaft of the connecting rod is in the L direction, the other end of the connecting rod is hinged to the second motor box 520, and the hinge shaft is in the L direction. Unlike the embodiment, the second motor case of the present invention is hinge-coupled to the connection member 530, the hinge axis is in the L direction, and the connection member 530 and the slider 510 are fixedly and rigidly coupled.

In this embodiment, the adjusting slider 540 and the slider 510 have different specifications, so that when the screw 620 rotates, the adjusting slider 540 and the slider 510 rotate at different speeds, and the specific two sliders are designed to have different screw pitches. The specific pitch ratio is 1: 2, wherein the speed of adjusting the slider at the removal is faster than the translation speed of slider 510 to make the helical rod pivoted the time stirring head can rotate to the left, with can stir the apparatus of this orientation position, further, can the translation when stirring head rotates to the left, make the convenient container that stretches into of stirring head during, especially to the side top open-ended container.

Claims

1. The utility model provides a multi-functional laboratory agitator, includes base (100), support (200), first motor case (300), puddler (400), base (100) are used for fixed agitator, support (200) and base (100) fixed connection are fixed with first motor case (300) on support (200), first motor case (300) and puddler (400) are connected, first motor case (300) drive puddler rotate and then accomplish the stirring, its characterized in that, the puddler include:

the first stirring shaft (410) is fixedly connected with the first motor box, the first stirring shaft is driven to rotate by the first motor box, two concave parts (411) are arranged on the section of the first stirring shaft, the first stirring shaft further comprises a first rotating rod (412) and a second rotating rod (413), the first rotating rod and the second rotating rod are respectively hinged on the section of the first stirring shaft, and the tail ends of the first rotating rod and the second rotating rod are respectively provided with a joint part (415);

a second stirring shaft (420) having two protrusions (421) at the end thereof, the two protrusions being inserted into the two recesses of the first stirring shaft, the two protrusions having coupling grooves (422) at the sides thereof, the first and second rotating rods being rotatably driven, the coupling being inserted into the coupling grooves (422) to fix the first and second stirring shafts when the first and second rotating rods are rotated, and the coupling being separated from the coupling grooves to separate the first and second stirring shafts;

the stirring head (430) is fixedly connected with the second stirring shaft and is used for directly stirring the object;

the first rotating rod (412) and the second rotating rod (413) are respectively provided with a movable groove (414), the first stirring shaft further comprises a moving head (416), the moving head is provided with a moving column (419), the moving column is clamped into the movable grooves of the first rotating rod and the second rotating rod and can move along the two movable grooves, and the moving column moves along the two movable grooves to drive the first rotating rod and the second rotating rod to rotate;

the moving head (416) is connected with a moving rod (417), and the moving rod can be driven to drive the moving column to move along the moving groove through the moving head;

the outer surface of the first stirring shaft is a shell (418), and a moving rod (417) is connected with a shell screw.

2. A multifunctional laboratory mixer according to claim 1 wherein said movable shaft is provided with a cross-shaped opening at its distal end, said distal end being exposed from said housing.

3. A multifunctional laboratory stirrer according to claim 2, characterized in that the moving rod is rotatable with respect to the moving head (416) about the axis of the moving rod.

4. A multifunctional laboratory stirrer according to claim 3, characterized in that the moving rod and the moving head are connected by a bearing.