CN203899494U

CN203899494U - Stirring device for laboratory

Info

Publication number: CN203899494U
Application number: CN201420130769.0U
Authority: CN
Inventors: 杨东
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-23
Filing date: 2014-03-23
Publication date: 2014-10-29
Anticipated expiration: 2024-03-23

Abstract

The utility model provides a stirring device for a laboratory. The stirring device comprises a motor, wherein an output shaft of the motor is connected with a stirring shaft, a first stirring blade and a second stirring blade are arranged at the lower end of the stirring shaft, the vertical projection area of the first stirring blade is not equal to that of the second stirring blade, and the horizontal distance between the center of gravity of the first stirring blade and the axis of the stirring shaft is equal to that between the center of gravity of the second stirring blade and the axis of the stirring shaft. According to the stirring device, the vertical projection areas of the first stirring blade and the second stirring blade are not equal, so that stirring amplitudes of the two stirring blades to liquids during stirring are different, stable isolation areas formed below and above the blades during stirring in the prior art are reduced and even eliminated, and the stirring efficiency is improved. Meanwhile, the distance between the center of gravity of the first stirring blade and the axis of the stirring shaft is equal to that between the center of gravity of the second stirring blade and the axis of the stirring shaft, so that the two stirring blades rotate stably during stirring. Therefore, the stirring device has the characteristics that dead corners during stirring are eliminated, and the stirring efficiency is improved.

Description

A kind of laboratory agitating device

Technical field

The utility model relates to a kind of agitating device, is specifically related to a kind of agitating device for laboratory.

Background technology

In the laboratories such as medicament chamber of school, medicine chamber, stirring to solution, mixing, preparation etc. often use small-sized agitating device, for solution is carried out to dispersed with stirring, conventional oar formula agitating device and electromagnetic mixing apparatus on medicament at present, for oar formula agitating device, it comprises the shaft being in transmission connection with power output shaft, and two blades that size is identical are installed on shaft.Existing oar formula agitating device in use; conventionally can there is a pair of mixing isolated area in tank diameter intra vane upper and lower; fluid in isolated area can not mix effectively with the fluid in other regions; can only carry out the exchange of momentum and energy at a slow speed by the mode of molecular diffusion; thereby seriously hinder the abundant mixing of fluid; extend incorporation time, reduced mixing efficiency.

Utility model content

The purpose of this utility model is to provide a kind of laboratory agitating device, has the technical problem at dead angle to eliminate oar formula agitating device of the prior art.

The technical solution of the utility model is such:

A kind of laboratory agitating device, comprise motor, the output shaft of described motor is connected with shaft, the lower end of described shaft is provided with the first paddle and the second paddle, the vertical projected area of described the first paddle is not equal to the vertical projected area of the second paddle, and the center of gravity of described the first paddle equals the center of gravity of the second paddle to the horizontal range in shaft axle center to the horizontal range in shaft axle center.

According to laboratory of the present utility model agitating device, by making the vertical projected area of the first paddle and the second paddle unequal, the stirring amplitude difference of two paddles to liquid while making to stir, reduce and even eliminate the stable isolated area forming up and down at blade in prior art whipping process, increase stirring efficiency., equate by the distance that makes the distance of centre of gravity of the first paddle and the second paddle stir axle center, when the stirring that makes, two paddles rotate reposefully meanwhile.Therefore, laboratory of the present utility model agitating device has the dead angle of eliminating in whipping process, the feature that improves stirring efficiency.

Material, size and the intensity of paddle of the present utility model can be selected as required, are generally stainless steel and make, and the distance in distance of centre of gravity shaft axle center is 2cm.Paddle and shaft can weld together.The diameter of shaft is as the criterion to meet intensity, unsuitable excessive, is generally 0.3-0.5cm and is advisable.

In addition, laboratory of the present utility model agitating device can also have with additional technical feature:

For increasing the axial velocity of liquid, increase the mixing of upper and lower liquid, at least one is inclined for described the first paddle and the second paddle.

In laboratory, move and fix for this laboratory agitating device is more suitable for, described motor is connected on support by connecting rod.

Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.

Brief description of the drawings

Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of paddle part of the present utility model;

Fig. 3 is the structural representation of paddle of the present utility model when inclined.

Detailed description of the invention

Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.

Describe according to the laboratory agitating device of the utility model embodiment below with reference to Fig. 1-3.Its bag motor 1, shaft coupling 2, shaft 3, the first paddle 4, the second paddle 5, connecting rod 6 and support 7.

Motor 1 is fixed on support 7 by connecting rod 6.The axle shaft of motor 1 is connected with shaft 3 by shaft coupling 2, and the both sides of shaft 3 lower ends are welded and are provided with the first paddle 4 and the second paddle 5, and in the scope of the permission of structure and intensity, the first paddle 4 and the second paddle 5 are the bigger the better.

As shown in Figure 3, the first paddle 4 and the second paddle 5 are divided into vertical projected area a1 and horizontal projected area a2, and the vertical projected area of the first paddle 4 is less than the vertical projected area of the second paddle 5.During due to stirring, the major influence factors of agitation force is the size of vertical projected area, therefore the stirring amplitude difference of two paddles to liquid while making to stir, reduces and even eliminates the stable isolated area forming up and down at blade in prior art whipping process, increases stirring efficiency.Its first paddle 4 or the second paddle 5 can be vertically to place, and can one of them be at least also heeling condition, and excellent its is that the second paddle 5 is heeling condition.In the time that it is heeling condition, this paddle has axial shear force to liquid, for increasing the axial velocity of liquid, increases the mixing of upper and lower liquid.

As shown in Figure 2, the center of gravity 8 of the first paddle 4 equals the center of gravity of the second paddle 5 to the horizontal range h2 in shaft 3 axle center to the horizontal range h1 in shaft 3 axle center, and when the stirring making, two paddles rotate reposefully.Wherein, because the vertical projected area of the first paddle 4 is less than the vertical projected area of the second paddle 5, for making the position of its center of gravity consistent with the center of gravity of the second paddle, can increase the thickness of the first paddle 4.

Material, size and the intensity of two paddles of the present embodiment can be selected as required, and for stainless steel is made, the distance in distance of centre of gravity shaft axle center is 2cm.Paddle and shaft 3 can weld together.The diameter of shaft 3 is as the criterion to meet intensity, unsuitable excessive, is generally 0.5cm and is advisable.

Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.

Claims

1. a laboratory agitating device, it is characterized in that, comprise motor, the output shaft of described motor is connected with shaft, the lower end of described shaft is provided with the first paddle and the second paddle, the vertical projected area of described the first paddle is not equal to the vertical projected area of the second paddle, and the center of gravity of described the first paddle equals the center of gravity of the second paddle to the horizontal range of shaft axle to the horizontal range in shaft axle center.

2. laboratory according to claim 1 agitating device, is characterized in that, at least one is inclined for described the first paddle and the second paddle.

3. laboratory according to claim 1 agitating device, is characterized in that, described motor is connected on support by connecting rod.