CN106622695A - Long-time time keeping centrifugal machine - Google Patents
Long-time time keeping centrifugal machine Download PDFInfo
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- CN106622695A CN106622695A CN201510708927.5A CN201510708927A CN106622695A CN 106622695 A CN106622695 A CN 106622695A CN 201510708927 A CN201510708927 A CN 201510708927A CN 106622695 A CN106622695 A CN 106622695A
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Abstract
The invention discloses a long-time time keeping centrifugal machine. The long-time time keeping centrifugal machine comprises a centrifugal machine cavity, a rotating shaft, a rotor, a motor and a fixed cavity. The fixed cavity is located under the centrifugal machine cavity, and the fixed cavity communicates with the centrifugal machine cavity through a through hole. The motor is connected with the rotating shaft, and the rotating shaft is connected with the rotor. The motor is arranged in the fixed cavity, the rotating shaft penetrates the through hole and stretches into the centrifugal machine cavity, the rotor is located in the centrifugal machine cavity, and the motor drives the rotating shaft to rotate. A ventilation port is formed in the side wall of the fixed cavity. By means of the long-time time keeping centrifugal machine, complete and stable motor heat dissipation is achieved, the continuous work time is greatly prolonged, the experiment sampling accuracy is improved, and the human cost is saved.
Description
Technical field
The present invention relates to a kind of normal temperature type centrifuge, for chemical industry, medicine, the technical field such as laboratory.It particularly relates to a kind of long-time timing centrifuge.
Background technology
The stream time of existing normal temperature type centrifuge only has 90 minutes or so in industry；Trace it to its cause, be because that the motor for driving rotor to rotate at a high speed can cause power output unstable after working long hours because of overheated, lead to not ensure the product quality of centrifugation processing.Therefore existing normal temperature type centrifuge seems that comparison is powerless when some more difficult detached homogeneous samples are separated, need that homogeneous samples are carried out repeatedly to extract to sample repeatedly to obtain preferable extraction results.Operating efficiency is relatively low, spends the time longer.In addition, centrifuge rotor is from static to accelerating to the Acceleration of starting process that be enough to realize that the detached rated rotational frequency of sample needs a period of time, and existing normal temperature type centrifuge cannot be distinguished by rated rotational frequency and the acceleration rotating speed less than rated rotational frequency, the duration that cannot accurately hold rated rotational frequency is caused, the precision deficiency that experiment is adopted is in turn resulted in.How problem that the problems referred to above be those skilled in the art need thinking is overcome.
The content of the invention
To solve the above problems, the invention provides a kind of long-time timing centrifuge.
The concrete technical scheme of the present invention is as follows：
A kind of long-time timing centrifuge, including centrifuge cavity, rotating shaft, rotor, motor and fixed chamber, the fixed chamber is mutually conducted positioned at the underface of centrifuge cavity, between the fixed chamber and centrifuge cavity by through hole；The motor connection rotating shaft, the rotating shaft connects rotor；The motor is installed in fixed chamber, and the rotating shaft is stretched into centrifuge cavity through through hole, and the rotor is located in centrifuge cavity, the motor-driven rotatable shaft rotation；The fixed chamber sidewall is provided with ventilating opening.
By using this technical scheme：In practice, motor-driven rotatable shaft rotates, rotating shaft rotor driven high-speed rotation in centrifuge cavity, and rotor drives the air in centrifuge cavity to produce spiral air flow in rotation process, the spiral air flow is entered in fixed chamber from through hole, and Jing motors surface is simultaneously derived from the ventilating opening for fixing chamber sidewall.There is provided a stably lasting wind cooling temperature lowering to motor surface with the spiral air flow, so as to overcome prior art in motor work long hours the problems of excessive heat of appearance, the stream time of centrifuge greatly improved.
Preferably, cover plate is also included in above-mentioned long-time timing centrifuge, the cover plate is fixed in rotating shaft, and the cover plate is located at the surface of through hole and there is space between the cover plate and through hole.
By using this technical scheme：Through hole is covered using cover plate, prevent from the material separated out in the centrifuge course of work from falling in fixed within the chamber from through hole to pollute, it flow in fixed chamber in the space that the spiral air flow that simultaneously rotor is produced still can be between cover plate and through hole, brushes motor surface and realize that the sustained wind of motor is cold but.
It is further preferred that above-mentioned long-time timing centrifuge is also built-in with control module, the control module includes the fast unit of meter, identifying unit and counting unit；The counting unit is used for the working time length of controlled motor；The meter speed unit is used to detect the rotating speed of rotor and the rotating speed for measuring be sent to identifying unit；Be previously written in the identifying unit decision threshold, by judge it is described based on fast unit input speed revolution value whether more than the decision threshold；The decision threshold being previously written in the speed revolution value of the fast unit input of the meter is more than or equal to identifying unit, identifying unit sends a signal to counting unit, makes counting unit startup work.
By using this technical scheme：When centrifuge rotor starts to accelerate from static, the real-time rotating speed of the fast unit detection rotor of meter simultaneously sends the rotating speed for measuring to identifying unit, identifying unit judges whether the current rotating speed of rotor reaches and be enough to realize the detached rated rotational frequency of sample according to the decision threshold being previously written.If the rotating speed of current rotor is less than criteria threshold, it is judged to that rotor needs to continue to accelerate, counting unit does not work.And work as the rotating speed of rotor more than or equal to criteria threshold, and judging that the current rotating speed of rotor has reached rated rotational frequency, identifying unit sends a signal to counting unit, with the continuous working period of counting unit controlled motor.So as to realize the accurate assurance of the continuous firing duration to rated rotational frequency.
Compared with prior art, present configuration is simple, it is easy to prepare.Perfect and stable motor radiating is realized, stream time is greatly improved, the degree of accuracy of experiment sampling is improve, human cost has been saved.
Description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1, and control module is build-in components, therefore not shown in FIG.
Each part is as follows with the corresponding relation of reference in above-mentioned accompanying drawing：
1st, centrifuge cavity；2nd, rotating shaft；3rd, rotor；4th, motor；5th, fixed chamber；6th, through hole；7th, cover plate；8th, ventilating opening.
Specific embodiment
In order to be illustrated more clearly that technical scheme, below in conjunction with accompanying drawing 1, the invention will be further described.
A kind of long-time timing centrifuge, including centrifuge cavity 1, rotating shaft 2, rotor 3, motor 4, fixed chamber 5, cover plate 7 and control module.Wherein, the fixed chamber 5 is mutually conducted positioned at the underface of centrifuge cavity 1, between the fixed chamber 5 and centrifuge cavity 1 by through hole 6；The connection rotating shaft 2 of the motor 4, the connection rotor 3 of the rotating shaft 2；The cover plate 7 is fixed in rotating shaft 2, and the cover plate 7 is located at the surface of through hole 6 and there is space between the cover plate 7 and through hole 6.The motor 4 is installed in fixed chamber 5, and the rotating shaft 2 is stretched into centrifuge cavity 1 through through hole 6, and the rotor 3 is located in centrifuge cavity 1, and the drive shaft 2 of the motor 4 rotates；The side wall of the fixed chamber 5 is provided with ventilating opening 8.
The control module is built in long-time timing centrifuge, including the fast unit of meter, identifying unit and counting unit；The counting unit is used for the working time length of controlled motor；The meter speed unit is used to detect the rotating speed of rotor and the rotating speed for measuring be sent to identifying unit；Be previously written in the identifying unit decision threshold, by judge it is described based on fast unit input speed revolution value whether more than the decision threshold；The decision threshold being previously written in the speed revolution value of the fast unit input of the meter is more than or equal to identifying unit, identifying unit sends a signal to counting unit, makes counting unit startup work.Input unit is additionally provided with long-time timing centrifuge, for the default operating time of counting unit input.
In practice, the course of work is as follows：
First, operating time can according to actual needs be preset in 50 seconds 10 seconds to 59 points, 1 hour to 99 hours 59 points of two time ranges to the default operating time of counting unit input by input unit.Then, start motor 4, the drive shaft 2 of motor 4 rotates, the rotor driven 3 of rotating shaft 2 accelerates to rotate in centrifuge cavity 1, the real-time rotating speed of the fast unit detection rotor 3 of meter simultaneously sends the rotating speed for measuring to identifying unit, identifying unit judges whether the current rotating speed of rotor 3 reaches and be enough to realize the detached rated rotational frequency of sample according to the decision threshold being previously written.If the rotating speed of rotor 3 is less than criteria threshold, it is judged to that rotor 3 needs to continue to accelerate, counting unit does not work.And work as the rotating speed of rotor 3 more than or equal to criteria threshold, and judging that the current rotating speed of rotor has reached rated rotational frequency, identifying unit sends a signal to counting unit, and counting unit controlled motor 3 stops accelerating rotating shaft 2, is persistently rotated with rated rotational frequency according to default operating time.To realize the precise control to the centrifugal work market of motor 4.During, rotor 3 drives the air in centrifuge cavity 1 to produce spiral air flow in rotation process, and the spiral air flow is entered in fixed chamber 5 from through hole 6, blows the surface of Jing motors 4, one lasting wind cooling temperature lowering is provided motor surface, and the ventilating opening 8 from the fixed side wall of chamber 5 is derived.After testing, product of the invention can continually and steadily work up to 59 minutes 99 hours, and the running hours for being far longer than 99 minutes of like product currently on the market are long.
The above; the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any those skilled in the art is in technical scope disclosed by the invention; the change or replacement that can be readily occurred in, all should be included within the scope of the present invention.Protection scope of the present invention is defined by the protection domain of claims.
Claims (3)
1. a kind of long-time timing centrifuge, including centrifuge cavity（1）, rotating shaft（2）, rotor（3）And motor（4）；It is characterized in that：Also include fixed chamber（5）, the fixed chamber（5）Positioned at centrifuge cavity（1）Underface, the fixed chamber（5）With centrifuge cavity（1）Between pass through through hole（6）Mutually it is conducted；The motor（4）Connection rotating shaft（2）, the rotating shaft（2）Connection rotor（3）；The motor（4）It is installed on fixed chamber（5）In, the rotating shaft（2）Through through hole（6）Stretch into centrifuge cavity（1）It is interior, the rotor（3）Positioned at centrifuge cavity（1）It is interior, the motor（4）Drive shaft（2）Rotation；The fixed chamber（5）Side wall is provided with ventilating opening（8）.
2. as claimed in claim 1 a kind of long-time timing centrifuge, it is characterised in that：Also include cover plate（7）, the cover plate（7）It is fixed on rotating shaft（2）On, the cover plate（6）Positioned at through hole（6）Surface and the cover plate（6）With through hole（6）Between there is space.
3. as claimed in claim 2 a kind of long-time timing centrifuge, it is characterised in that：Also include control module, the control module includes the fast unit of meter, identifying unit and counting unit；The counting unit is used for the continuous working period length of controlled motor；The meter speed unit is used to detect the rotating speed of rotor and the rotating speed for measuring be sent to identifying unit；Be previously written in the identifying unit decision threshold, by judge it is described based on fast unit input speed revolution value whether more than the decision threshold；The decision threshold being previously written in the speed revolution value of the fast unit input of the meter is more than or equal to identifying unit, identifying unit sends a signal to counting unit, makes counting unit startup work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708927.5A CN106622695A (en) | 2015-10-28 | 2015-10-28 | Long-time time keeping centrifugal machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708927.5A CN106622695A (en) | 2015-10-28 | 2015-10-28 | Long-time time keeping centrifugal machine |
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| CN106622695A true CN106622695A (en) | 2017-05-10 |
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| CN201510708927.5A Pending CN106622695A (en) | 2015-10-28 | 2015-10-28 | Long-time time keeping centrifugal machine |
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Citations (12)
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|---|---|---|---|---|
| US5897483A (en) * | 1996-04-22 | 1999-04-27 | Kendro Laboratory Products, Gmbh | Laboratory centrifuge having a casing cover and rotor chamber adapted to exhaust circulated air |
| CN2902472Y (en) * | 2005-11-25 | 2007-05-23 | 珠海黑马医学仪器有限公司 | Table type micro high speed centrifugal machine |
| CN101455999A (en) * | 2008-12-26 | 2009-06-17 | 上海力申科学仪器有限公司 | Desk type high speed centrifugal machine |
| CN201269979Y (en) * | 2008-10-10 | 2009-07-08 | 上海医疗器械（集团）有限公司手术器械厂 | Rotor recognition control system for centrifuger |
| CN101811099A (en) * | 2009-02-24 | 2010-08-25 | 多美工业株式会社 | centrifugal separator |
| CN201930853U (en) * | 2010-10-27 | 2011-08-17 | 苏州工业园区亚科化学试剂有限公司 | Centrifuge control system |
| CN202191968U (en) * | 2011-08-31 | 2012-04-18 | 大龙兴创实验仪器(北京)有限公司 | Air cooling device of centrifugal machine |
| CN103447169A (en) * | 2012-05-29 | 2013-12-18 | 江苏正基仪器有限公司 | Medical centrifuge |
| CN203664026U (en) * | 2014-01-17 | 2014-06-25 | 台州博曼克科学仪器有限公司 | High-speed centrifugal machine |
| CN203695237U (en) * | 2014-02-28 | 2014-07-09 | 嘉兴职业技术学院 | Centrifuge |
| CN204685315U (en) * | 2015-05-15 | 2015-10-07 | 徐昌平 | For reducing the low-noise ventilating system of temperature rise in normal temperature centrifuge cavity |
| CN205236205U (en) * | 2015-10-28 | 2016-05-18 | 贺默(上海)仪器科技有限公司 | Centrifugal separator of timeing for a long time |
-
2015
- 2015-10-28 CN CN201510708927.5A patent/CN106622695A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5897483A (en) * | 1996-04-22 | 1999-04-27 | Kendro Laboratory Products, Gmbh | Laboratory centrifuge having a casing cover and rotor chamber adapted to exhaust circulated air |
| CN2902472Y (en) * | 2005-11-25 | 2007-05-23 | 珠海黑马医学仪器有限公司 | Table type micro high speed centrifugal machine |
| CN201269979Y (en) * | 2008-10-10 | 2009-07-08 | 上海医疗器械（集团）有限公司手术器械厂 | Rotor recognition control system for centrifuger |
| CN101455999A (en) * | 2008-12-26 | 2009-06-17 | 上海力申科学仪器有限公司 | Desk type high speed centrifugal machine |
| CN101811099A (en) * | 2009-02-24 | 2010-08-25 | 多美工业株式会社 | centrifugal separator |
| CN201930853U (en) * | 2010-10-27 | 2011-08-17 | 苏州工业园区亚科化学试剂有限公司 | Centrifuge control system |
| CN202191968U (en) * | 2011-08-31 | 2012-04-18 | 大龙兴创实验仪器(北京)有限公司 | Air cooling device of centrifugal machine |
| CN103447169A (en) * | 2012-05-29 | 2013-12-18 | 江苏正基仪器有限公司 | Medical centrifuge |
| CN203664026U (en) * | 2014-01-17 | 2014-06-25 | 台州博曼克科学仪器有限公司 | High-speed centrifugal machine |
| CN203695237U (en) * | 2014-02-28 | 2014-07-09 | 嘉兴职业技术学院 | Centrifuge |
| CN204685315U (en) * | 2015-05-15 | 2015-10-07 | 徐昌平 | For reducing the low-noise ventilating system of temperature rise in normal temperature centrifuge cavity |
| CN205236205U (en) * | 2015-10-28 | 2016-05-18 | 贺默(上海)仪器科技有限公司 | Centrifugal separator of timeing for a long time |
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Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |