CN111659291A

CN111659291A - Stirrer for laboratory

Info

Publication number: CN111659291A
Application number: CN202010678571.6A
Authority: CN
Inventors: 李秋霞; 徐百平; 刘彪; 张志旋
Original assignee: Wuyi University
Current assignee: Wuyi University
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2020-09-15

Abstract

The invention provides a stirrer for a laboratory, which comprises a base, an upright post, a height adjusting assembly and a stirring assembly, wherein one end of the upright post is connected with the base, the other end of the upright post is provided with the height adjusting assembly, the height adjusting assembly is connected with the stirring assembly, and the stirring assembly comprises a stirring shaft and stirring fins arranged on the stirring shaft. The inverted V-shaped stirring blade forms an inverted cone-shaped stirring range during stirring, and the horizontal threaded stirring blade forms a horizontal stirring range during stirring, so that the stirring range of materials is enlarged, the materials are uniformly mixed, the materials are prevented from precipitating, and particularly, when viscoelastic liquid is stirred, the stirring force is increased by combining the two stirring blades, and the stirring speed is increased. And through being equipped with a plurality of anti-sway sucking discs at the lower extreme of base, improve the stability of agitator, reduce the especially rocking that viscous solution produced when the stirring of material, reduce the material and produce the bubble, reduce experimental error.

Description

Stirrer for laboratory

Technical Field

The invention relates to the technical field of stirrers, in particular to a stirrer for a laboratory.

Background

The stirrer is one of the common devices used in the material mixing process, is mainly used for mixing materials and stirring and preventing the materials from precipitating, and generally comprises a stirring motor and a stirring paddle.

The stirrer for the laboratory mainly comprises the following components: the motor, the bearing seat, the frame, the coupler, the stirring shaft, the stirring head and the rotating speed can be adjusted as required, and a variable frequency motor and a frequency converter can also be used. The power machine is a power part which is fixed on the bracket, the speed of the power machine is adjusted by the speed regulator, the stirrer is connected with the motor, and after the power is switched on, the motor drives the stirring shaft to rotate to stir. The magnetic stirrer and the paddle stirrer are most commonly used at present, the magnetic stirrer has low noise, can assist in heating, can realize the mixing of materials in a closed container, and is flexible and convenient to use.

However, the stirrer has poor mixing effect on viscous materials due to insufficient magnetic stirring power, and particularly, when the reaction container is large, the solution is difficult to be uniformly mixed; paddle agitator simple structure, stirring power are stronger, however when the reaction vessel diameter is great, need stir more solution, the increase paddle diameter is with greatly increased power consumption, generally adopts a plurality of paddles to guarantee the stirring effect, has increased reaction unit's cost and complexity, and consequently these two kinds of agitating unit are hardly applicable to stirring stickness solution.

In addition, because the stirring paddle and the stirring shaft are fixedly connected and cannot be detached, the stirring paddle with a specific structure cannot be suitable for various containers with different sizes, and cannot fully stir materials in a larger container. Meanwhile, the stirring force required by the material with the high solid-liquid ratio in the test process is large, so that the uneven stirring can cause uneven mass transfer and heat transfer of the material. When the materials are stirred, vibration is generated, and the viscoelastic materials can generate more bubbles to influence the experimental result.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a stirrer for a laboratory, which is applicable to stirring of viscoelastic fluid, can prevent the stirrer from shaking, prevents materials from generating multiple bubbles to influence an experimental result, and reduces experimental errors.

The technical scheme of the invention is as follows: the utility model provides an agitator for laboratory, includes base, stand, altitude mixture control subassembly and stirring subassembly, stand one end be connected with the base, be provided with altitude mixture control subassembly on the other end, altitude mixture control subassembly be connected with the stirring subassembly, the stirring subassembly include the (mixing) shaft and set up at the epaxial stirring wing of stirring.

Preferably, the stirring fin comprises at least one pair of inverted V-shaped stirring blades arranged on the stirring shaft.

Preferably, the stirring fin further comprises at least one pair of horizontal threaded stirring blades arranged on the stirring shaft.

Preferably, the stirring shaft is provided with a plurality of pairs of threaded blind holes, and the threaded blind holes are used for installing inverted V-shaped stirring blades or horizontal threaded stirring blades.

Preferably, the stirring assembly further comprises a stirring motor, and the stirring motor is connected with the stirring shaft.

Preferably, the height adjusting assembly comprises a sliding seat and a cross bar connected with the sliding seat, and the sliding seat is connected with the upright post.

Preferably, the sliding seat is connected with the upright post through an adjusting bolt, and the height of the sliding seat on the upright post is adjusted through the adjusting bolt.

Preferably, the base be the arc structure, and arc structure base lower extreme still is provided with 2 at least anti-rocking suckers, through anti-rocking sucker improve the stability of agitator, reduce the especially rocking that viscous solution produced of material when the stirring, reduce the material and produce the bubble, reduce experimental error.

Preferably, the stirring shaft and the stirring fins are made of stainless steel with corrosion resistance, so that the stirrer is suitable for stirring chemically corrosive solutions and solutions with high viscosity.

Preferably, the stirring motor is controlled by a motor controller.

The invention has the beneficial effects that:

1. the base and the upright post are made of cast iron, so that the weight of the upright post is increased, and the lower end of the base is provided with the anti-shaking suckers, so that the stability of the stirrer is improved, the shaking of materials, particularly viscous solution, during stirring is reduced, the generation of bubbles in the materials is reduced, and experimental errors are reduced;

2. the stirring shaft is made of stainless steel, has good corrosion resistance and higher hardness, and is suitable for solutions with chemical corrosivity and solutions with higher viscosity;

3. the stirring wing comprises an inverted V-shaped stirring blade and a horizontal thread stirring blade, wherein the inverted V-shaped stirring blade and the horizontal thread stirring blade are sequentially arranged from bottom to top, an inverted cone-shaped stirring range is formed by the inverted V-shaped stirring blade during stirring, a horizontal stirring range is formed by the horizontal thread stirring blade during stirring, the inverted V-shaped stirring blade and the horizontal thread stirring blade increase the stirring range of materials during stirring, so that the materials are uniformly mixed, the materials are prevented from precipitating, particularly, when viscoelastic liquid is stirred, the stirring force is increased by the combination of the inverted V-shaped stirring blade and the horizontal thread stirring blade, and the stirring speed is increased.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the present invention;

in the figure, 1-base, 2-column, 3-slide base, 4-cross bar, 5-stirring motor, 6-stirring shaft, 7-horizontal screw thread stirring blade, 8-inverted V-shaped stirring blade, and 9-shaking-proof sucker.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in fig. 1, the present embodiment provides a stirrer for a laboratory, which is mainly composed of a base 1, a column 2, a cross bar 4, and a stirring assembly, wherein the base 1 is an arc-shaped structure and made of cast iron, so as to increase the weight of the base and ensure the stability of the stirrer. Simultaneously, this embodiment sets up 3 anti-shake sucking discs 9, 3 at base 1's lower extreme anti-shake sucking discs 9 set up in base 1's centre and left and right sides. The shaking generated by the stirrer during stirring can be buffered by the shaking prevention sucking disc 9, so that the stability of the stirrer is improved, the stirring effect is ensured, the shaking generated by materials, especially viscous solution, during stirring is reduced, the generation of bubbles in the materials is reduced, and the experimental error is reduced.

Stand 2 set up on base 1 to stand 2 also adopt cast iron to make, in order to satisfy different experimental requirements, this embodiment still provides slide 3, slide 3 pass through adjusting bolt and set up on stand 2, through the height of adjusting bolt adjustable slide 3 on stand 2 to adjust the height of stirring subassembly.

The sliding seat 3 is connected with the sliding component through a cross rod 4. In this embodiment, the stirring assembly includes a stirring motor 5, a stirring shaft 6, and a stirring fin, the stirring fin is disposed on the stirring shaft 6, the stirring shaft 6 is connected with a motor shaft of the stirring motor 5, and the stirring range can be expanded through the stirring fin. As shown in fig. 1, the stirring fin adopted in this embodiment includes a pair of inverted V-shaped stirring blades 8, and this embodiment also provides another embodiment, as shown in fig. 2, the stirring fin is a pair of horizontal screw stirring blades 7, and the stirring fin may also be a combination of the pair of inverted V-shaped stirring blades 8 and the pair of horizontal screw stirring blades 7. Wherein, the horizontal screw thread stirring paddle 7 is arranged above the inverted V-shaped stirring paddle 8. For the installation of type of falling V stirring paddle leaf 8 and horizontal screw stirring paddle leaf 7, this embodiment is in (mixing) shaft 6 on set up a plurality of screw thread blind holes, horizontal screw stirring paddle leaf 7 connect the well upper portion at (mixing) shaft 6 through the cooperation of screw thread blind hole and external screw thread, type of falling V stirring paddle leaf 8 connect the lower extreme at (mixing) shaft 6 through the cooperation of screw thread blind hole and external screw thread, (mixing) shaft 6 adopts stainless steel, has good corrosion resisting property, higher hardness, is applicable to and has the great solution of chemical corrosion nature solution and viscosity.

During the stirring, the type of falling V stirring paddle leaf of (mixing) shaft 6 lower extreme forms an inverted cone stirring scope at stirring 8, and horizontal screw thread stirring paddle leaf 7 of upper end forms a horizontally stirring scope in the stirring 6, and the type of falling V stirring paddle leaf 8 and horizontal screw thread stirring paddle leaf have together great the stirring scope of having increaseed the material when stirring, make the material homogeneous mixing, prevent that the material from deposiing, especially when stirring viscoelasticity liquid, stirring force has been increaseed in combination of both stirring paddle leaves, has improved stirring speed. Moreover, the inverted-V-shaped stirring blade 8 and the horizontal thread stirring blade 7 are detachable and movable, are suitable for containers with different sizes, can be fully stirred and can be conveniently cleaned.

The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.

Claims

1. The utility model provides a agitator for laboratory, includes base, stand, altitude mixture control subassembly and stirring subassembly, its characterized in that: one end of the upright post is connected with the base, the other end of the upright post is provided with a height adjusting component, the height adjusting component is connected with the stirring component, and the stirring component comprises a stirring shaft and a stirring fin arranged on the stirring shaft.

2. A laboratory mixer according to claim 1, wherein: the stirring fin comprises at least one pair of inverted V-shaped stirring blades arranged on the stirring shaft.

3. A laboratory mixer according to claim 2, wherein: the stirring fin also comprises at least one pair of horizontal threaded stirring blades arranged on the stirring shaft.

4. A laboratory mixer according to claim 2 or 3, characterized in that: the stirring shaft is provided with a plurality of pairs of threaded blind holes, and the threaded blind holes are used for installing inverted V-shaped stirring blades or horizontal threaded stirring blades.

5. A laboratory mixer according to claim 1, wherein: the stirring assembly further comprises a stirring motor, and the stirring motor is connected with the stirring shaft.

6. A laboratory mixer according to claim 1, wherein: the height adjusting assembly comprises a sliding seat and a cross rod connected with the sliding seat, and the sliding seat is connected with the upright post.

7. A laboratory mixer according to claim 6, characterized in that: the sliding seat is connected with the upright post through an adjusting bolt.

8. A laboratory mixer according to claim 1, wherein: the base be the arc structure, and arc structure base lower extreme still is provided with 2 at least anti-rocking suckers, through anti-rocking sucker improve the stability of agitator, reduce the especially rocking that viscous solution produced of material when the stirring, reduce the material and produce the bubble, reduce experimental error.

9. A laboratory mixer according to claim 1, wherein: the stirring shaft and the stirring fins are made of corrosion-resistant stainless steel.

10. A laboratory mixer according to claim 1, wherein: the base and the upright posts are made of cast iron.