CN86104103A - The liquid constant temperature agitator - Google Patents
The liquid constant temperature agitator Download PDFInfo
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- CN86104103A CN86104103A CN86104103.8A CN86104103A CN86104103A CN 86104103 A CN86104103 A CN 86104103A CN 86104103 A CN86104103 A CN 86104103A CN 86104103 A CN86104103 A CN 86104103A
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Abstract
A kind of liquid constant temperature magnetic stirrer that is used for chemical analysis apparatus, use rotary magnet of motor drives, series connection drives two magnetic elements and rotates, and rotates in container separately, stir the interior liquid of container separately, container can keep absolute sealing property.Use the heating of working fluid medium, liquid medium and container contact area are bigger, and contact is good, having a narrow range of temperature between the sample solution in the heat exchanger effectiveness height, liquid medium and container.Temperature persistance is created favorable conditions.Be equipped with high-precision temperature controller again, the constant temperature precision is easy to be controlled in 0.01 ℃ of scope.Can satisfy the requirement that analytical instrument stirs with sample solution constant temperature.
Description
The invention belongs to the thermostatic mixer tool in the chemical analysis apparatus, specifically, relate to a kind of being used under any chosen temperature, stir apparatus open or the interior solution of closed container.
In prior art, generally heat the structure of magnetic stirrer, be with rolling disc that two permanent magnets are housed of a motor drives.The magnetic pole top is by adorning unlatching or the closed container that a nonmagnetic substance is made, and the solution that the needs of packing into stir is put into a magnetic stirrer, and the magnetic stirrer in the permanent magnet attraction container on the rolling disc rotates, and drives liquid and rotates the purpose that reaches stirring.Adjusting is input to power of electric motor or changes the speed reducing ratio of motor and rolling disc, thereby regulates the rotating speed of magnetic stirrer.
With electric hot plate mode heating container.Electric hot plate is installed in the permanent magnet top of rotation, and container is placed on the electric hot plate, the solution when stirring in the energy while heating container.With the temperature of detector unit measurement solution, by the power of temperature-control circuit control heating plate, thereby the solution in the control container keeps stationary temperature.Because the electric hot plate quality is heavy, thereby thermal inertia is also big, the surperficial loose contact of the lower surface of container and electric hot plate, cause heat exchanger effectiveness low, when liquid is heated to the temperature of appointment, temperature controller cuts off the heating current of electric hot plate, but because of the heavy stored heat of the quality of electric hot plate itself is also big, also will continue container is heated, the temperature of solution will rise, drop to the temperature of appointment when fluid temperature after, temperature controller begins to supply with the electric hot plate heating current, because the quality of electric hot plate is heavy, programming rate is low, temperature also will continue to descend, and begins to rise again, and then the temperature of solution rises after and then descending again.Cause the temperature fluctuation of solution very big like this, the requirement that does not reach constant temperature.Can only use under the less demanding situation variations in temperature, only do to add thermal agitation usefulness, not reach the requirement of the needed high accuracy constant temperature of analytical instrument for the preparation chemical reagent.
The objective of the invention is to realize by following design and mode.The purpose of this invention is to provide one can be applicable to that the supporting liquid constant temperature electromagnetism of analytical instrument is retouched and stir device.It can make the temperature of analyzed sample keep high-precision constant temperature.
Imagination is to replace electric hot plate with water-bath, with liquid medium solution is heated.Pot is made with nonmagnetic substance.Heating element heater is contained in pot interior liquid medium, also heating element heater can be contained in below the bottom of a pan, or the outside of pot.Below centre, the bottom of a pan outside by adorning the permanent magnet that a dual intensity rotates.Use the motor driven rotary, adorn a permanent magnet that can rotate in the bottom of a pan in the central part, then can be attracted to rotate by the magnetic line of force by the rotor magnet outside the bottom of a pan, the liquid medium in the agitated kettle makes temperature even, improves rate of heat exchange.In pot, rotate permanent magnet above, the fixing porous thin slice made of a slice nonmagnetic substance, confession is by the carriage of putting container.Put into a magnetic stirrer and sample solution in the container.The magnetic stirrer is rotated by the permanent magnet attraction that rotates in the pot, and the sample solution that drives in the container rotates the purpose that reaches stirring.The liquid of optional water of liquid medium or wet goods good flowing properties.Heating element heater is selected heating for use, can use for being higher than room temperature.If select tube element for use, feed cooling fluid, just can use semiconductor cooling element can not be subjected to the influence use of room temperature more convenient under the room temperature being lower than.
Feature of the present invention is significantly, is the permanent magnet that uses a rotation of motor drives cleverly, and series connection drives two magnetic elements, is rotating in the container separately, stirs the interior liquid of container separately, and container keeps absolute sealing property.Use the heating of working fluid medium, liquid medium and container contact area are bigger, and contact is good, and having a narrow range of temperature between the sample solution creates favorable conditions to temperature persistance in the rate of heat exchange height, the temperature of liquid medium and container.Be equipped with high-precision temperature controller again, the constant temperature precision is easy to be controlled in 0.01 ℃ of scope.Can satisfy the requirement that analytical instrument stirs sample solution constant temperature.
Below, with an accompanying drawings most preferred embodiment of the present invention, thereby further describe details of the present invention.
The drawing explanation of accompanying drawing:
The structural representation that accompanying drawing has been simplified for of embodiment.
Referring to accompanying drawing, liquid constant temperature magnetic stirrer in the present embodiment, it holds dress sample solution (2) in the opening of sample solution or the airtight objective device glass flask (1) nonmagnetic substances such as (or) stainless steels, put into a magnetic stirrer (3), glass flask (1) is placed on aluminium matter porous carriage (6) and goes up (perhaps with nonmagnetic substances such as stainless steels), rotor magnet (12) is contained in the centre of aluminum pot (5) (perhaps with magnetic materials such as stainless steels) at the end, two magnet rolling discs (8) are equipped with in square center under aluminum pot (5), by motor (7) driven rotary, the interior splendid attire aqueous medium of aluminum pot (5) (4) (perhaps using the liquid of wet goods good fluidity), electric tube heater (9), (10), (11) (perhaps feed cooling fluid or vapours) with metal tube, heater (9) is installed in aluminum pot (5) bottom, also heater (10) can be installed in the interior aqueous medium of aluminum pot (5) (4), also heater (11) can be installed in aluminum pot (5) outside, thermistor temperature detecting element (13), (14) (perhaps use other temperature detection element), thermistor temperature detecting element (13) is installed in the aqueous medium (4), detect the temperature of aqueous medium (4) and control electric tube heater (9) by temperature control circuitry, (10), (11) power makes aqueous medium (4) constant temperature make sample solution (2) keep constant temperature through heat exchange.Also available thermistor (14) is the temperature of test sample solution (2) directly, also can control by temperature control circuitry, and the power of electric tube heater (9), (10), (11) makes sample solution (2) keep constant temperature.Mixing speed is to reach the adjusting rotating speed with the input power that changes motor (7).Concrete circuit and temperature control all are to belong to general prior art so do not repeat.
Should be noted that at last providing the foregoing description is not meant to limit the present invention, so long as meet all variants or the improvement of the present invention's design, all should be the protection domain that belongs to given in claims of the present invention.
Claims (2)
1, a kind of liquid constant temperature magnetic stirrer that is used for chemical analysis apparatus.It comprises one with rotary magnet of motor drives, and this rotor magnet series system drives two magnetic elements and rotates, and can rotate in container separately, stirs the liquid in the container separately, and container can keep absolute sealing property.Use the heating of working fluid medium to improve rate of heat exchange, thereby improve the constant temperature precision.
2, according to the liquid constant temperature magnetic stirrer described in the claim 1, it further is characterized as, and can be applicable to add the granular solids material in muddy liquid and the solution, carries out constant temperature and stirs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86104103 CN1007407B (en) | 1986-11-17 | 1986-11-17 | The liquid constant temperature magnetic stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86104103 CN1007407B (en) | 1986-11-17 | 1986-11-17 | The liquid constant temperature magnetic stirrer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86104103A true CN86104103A (en) | 1987-11-11 |
| CN1007407B CN1007407B (en) | 1990-04-04 |
Family
ID=4802330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86104103 Expired CN1007407B (en) | 1986-11-17 | 1986-11-17 | The liquid constant temperature magnetic stirrer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1007407B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800226A (en) * | 2012-07-10 | 2012-11-28 | 沈阳大学 | Digital display temperature resistance magnetic force heating stirrer for experiment |
| CN107249725A (en) * | 2014-12-17 | 2017-10-13 | 汉斯海多尔夫有限公司 | Laboratory installation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443158C (en) * | 2007-04-13 | 2008-12-17 | 青岛伊科思新材料股份有限公司 | Helix stirred reactor with cryogen gong through inside, application, and technical method of polyreaction |
-
1986
- 1986-11-17 CN CN 86104103 patent/CN1007407B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800226A (en) * | 2012-07-10 | 2012-11-28 | 沈阳大学 | Digital display temperature resistance magnetic force heating stirrer for experiment |
| CN107249725A (en) * | 2014-12-17 | 2017-10-13 | 汉斯海多尔夫有限公司 | Laboratory installation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1007407B (en) | 1990-04-04 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |