CN201543405U - Thermostatic waterbath six-head magnetic stirrer - Google Patents
Thermostatic waterbath six-head magnetic stirrer Download PDFInfo
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- CN201543405U CN201543405U CN200920097905XU CN200920097905U CN201543405U CN 201543405 U CN201543405 U CN 201543405U CN 200920097905X U CN200920097905X U CN 200920097905XU CN 200920097905 U CN200920097905 U CN 200920097905U CN 201543405 U CN201543405 U CN 201543405U
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Abstract
The utility model provides a thermostatic waterbath six-head magnetic stirrer. The magnetic stirrer comprises a casing, a water bath box, electrical heating equipment, a circulating water pump, and a rectified power source, wherein six magnetic stirrers are arranged at the lower part of a plane box bottom of the water bath box, each magnetic stirrer is respectively made up of four coils symmetrically distributed around the periphery and is respectively provided with a controller composed of a driving module made up of a singlechip and a double-H bridge drive circuit, the I/O port of the singlechip is connected with a PWM square wave width adjustment potentiometer, and a temperature program controller is arranged on the electrical heating equipment. In the stirrer, the rotary field is generated through the polarity change law of the magnetic pole of each coil, and the stirrer has the characteristics of small volume, abrasion free, zero noise, long service life, and stronger vibration resisting ability. The temperature program controller is arranged in the thermostatic waterbath, thereby realizing the fuzzy PID control of the temperature, and overcoming the defect of full load start-up and operation of conventional electrical heating equipment; and meanwhile the precision of temperature control achieves plus or minus 0.5 DEG, and the effect of electric energy conservation is more remarkable.
Description
Technical field
The utility model belongs to test apparatus, particularly relates to six magnetic stirring apparatus of a kind of water bath with thermostatic control.
Background technology
The utility model of notification number CN2766954 " many rotary heads magnetic agitation thermostat water bath " discloses a kind of thermostat water bath that is used for medical science and the experiment of biology dermal osmosis.Structure is: have the electrical heating pan body and the parallel magnetic agitation unit that places in pot body of many covers of a band water circulating pump entery and delivery port, the magnetic agitation unit is made of the interior Sheng liquid beaker of establishing the magnetic agitation rotor, the electricity-controlled magnet that is inserted into the test tube in the beaker and is located at the beaker below ...
The magnetically-actuated mechanism of above-mentioned many rotary heads magnetic agitation thermostat water bath magnetic agitation rotor is that the magnet by motor, the magnet supporting plate that is installed on electric machine main shaft and this gripper shoe symmetry two ends constitutes, exist volume big, wearing and tearing are arranged, the life-span is short and the relatively poor defective of anti-vibration ability, also has the lower practical problem of temperature control precision simultaneously.
Summary of the invention
The utility model is in order to solve the described technical problem that above-mentioned many rotary heads magnetic agitation thermostat water bath exists, and provides a kind of water bath with thermostatic control six magnetic stirring apparatus.
The utility model is taked following technical scheme for achieving the above object: six magnetic stirring apparatus of this water bath with thermostatic control are by housing, water bath and electric heater unit thereof, water circulating pump and rectifier power source are formed, feature is, the case bottom, water bath plane that has electric heater unit is provided with six magnetic stirring apparatus, each magnetic stirring apparatus is made of four coils that circumference is symmetrically distributed respectively, the axis of each coil is parallel and perpendicular at the bottom of the water bath case, the pole polarity pole polarity identical and adjacent two coils with another that pass to adjacent two coils of each magnetic stirring apparatus under the DC current state are opposite, thereafter each relative coil alternately changes the DC current direction successively, the upper surface of each coil is respectively equipped with the pole piece of symmetry, corresponding pole piece longitudinal axis level intersects, its intersection point is corresponding with the container center in the water bath, described each magnetic stirring apparatus is respectively equipped with the controller that the driving module that is made of single-chip microcomputer and dual H-bridge drive circuit is formed, each PWM output of single-chip microcomputer is connected to and drives the corresponding dual H-bridge drive circuit of module control input end, corresponding respectively four coils that are connected in magnetic stirring apparatus in each dual H-bridge drive circuit control output end, the I/O mouth of described single-chip microcomputer is connected with the PWM square width and adjusts potentiometer, and potentiometer is provided with the mixing speed that is positioned at surface of shell and adjusts knob; Described electric heater unit is provided with programme regulator for temperature, and its thermocouple is arranged at water bath.
The utility model can also be taked following technical measures:
Described water bath is provided with loam cake, and the loam cake position of each container correspondence is provided with perforate and buckle closure thereof in the water bath.
The beneficial effects of the utility model and advantage are: the pole polarity rule of six magnetic stirring apparatus of this water bath with thermostatic control by each coil changes and produces rotating excitation field, has little, the no wearing and tearing of volume, noiseless, the life-span is grown, the anti-vibration ability is stronger characteristics.Water bath with thermostatic control is provided with programme regulator for temperature, can realize the fuzzy control of temperature, not only overcome the defective that general electric heater unit starts at full capacity and turns round, idle energy consumption is obviously reduced, also make simultaneously accuracy of temperature control reach ± 0.5 ℃, the effect of saving electric energy is also relatively significantly.
Description of drawings
Accompanying drawing 2 is that Fig. 1 magnetic stirring apparatus distributes and structural representation.
Accompanying drawing 3 is magnetic stirring apparatus electricity theory diagrams.
Accompanying drawing 4 rotating excitation fields form schematic diagram, and wherein figure " a ", " b ", " c ", " d " represent pole polarity alternately the changing successively under the PWM effect of loop A, B, C, D respectively.
Number in the figure: 1 housing, 2 loam cakes, 3 pan straddles, 4 buckle closures, 5 containers, 6 water baths, 7 coils, 8 gripper shoes, 9 circuit boards, 10 mixing speeds are adjusted knob, 11 programme regulator for temperature, 12 conducting magnetic columns, 13 pole pieces.
The specific embodiment
Further specify the utility model below in conjunction with embodiment and accompanying drawing thereof.
Embodiment as shown in Figure 1, the housing 1 of six magnetic stirring apparatus of this water bath with thermostatic control is supported with water bath 6, be provided with electric heater unit and the water circulating pump that is beneficial to the water temperature equilibrium in the water bath, identical with the existing same category of device Therefore, omited of electric heater unit diagram with the recirculated water pump structure.Water bath 6 is provided with loam cake 2, and each container 5 pairing loam cake position of being supported by pan straddle 3 in the water bath are provided with perforate and buckle closure 4 thereof.Also be provided with rectifier power source in the housing 1.
As shown in Figure 1, 2, the gripper shoe 8 of case bottom, water bath 1 plane is provided with six magnetic stirring apparatus, each magnetic stirring apparatus is made of four coils 7 that circumference is symmetrically distributed respectively, each coil 7 is fixing by conducting magnetic column 12 respectively, the axis of each coil is parallel and perpendicular at the bottom of the water bath case, the upper surface of each coil is respectively equipped with the pole piece 13 of symmetry, and corresponding pole piece longitudinal axis level intersects, and its intersection point is corresponding with container 5 centers in the water bath.
Shown in Fig. 1,3, the circuit board 9 in the housing is provided with respectively the controller that the driving module that is made of single-chip microcomputer and dual H-bridge drive circuit of corresponding each magnetic stirring apparatus is formed.With regard to one of them magnetic stirring apparatus, each PWM output of the single-chip microcomputer of its controller is connected to and drives the corresponding dual H-bridge drive circuit of module control input end, corresponding respectively four coils that are connected in this magnetic stirring apparatus in each dual H-bridge drive circuit control output end.The I/O mouth of single-chip microcomputer is connected with the PWM square width and adjusts potentiometer, and the mixing speed that is positioned at surface of shell that potentiometer is provided with is as shown in Figure 1 adjusted knob 10.
As shown in Figure 4, each PWM of single-chip microcomputer pole polarity (S) that to make adjacent loop A identical with coil B pole polarity (N) and adjacent two coils with another be coil C and coil D is opposite.If power up moment loop A to the pole polarity of coil D shown in Fig. 4 a, thereafter each relative coil such as loop A and coil C or coil B and coil D alternately change the DC current direction successively under the effect of PWM, the pole polarity that is each coil is by corresponding change shown in Fig. 4 b, Fig. 4 c, Fig. 4 d, and its result makes each pole piece form rotating excitation field.Magnetic stirrer in the container can at the uniform velocity rotate under the rotating excitation field effect.The square width of PWM can be adjusted by the potentiometer of Fig. 3, mixing speed can be changed.
As shown in Figure 5, electric heater unit RL in the water bath is provided with LU-960M type programme regulator for temperature, the thermocouple RO two ends that are arranged at water bath are connected to this controller thermocouple signal input a, b, the 220V single phase alternating current power supply connects following branch road respectively behind fuse RX: by the start and stop control branch road of start button switch TN1, stop button switch TN2 and contactor K series connection, start button switch TN1 is provided with self holding contact K-1; Power up the indication branch road by what power supply indicator D1 constituted; By the power transformer T switching branches that normally opened contact K-2, bi-directional thyristor switch SCR are in series and constitute, the end of the trigger end of bi-directional thyristor switch SCR and connection normally opened contact K-2 is connected to triggering output c, the d of programme regulator for temperature.The auxiliary output e of programme regulator for temperature connects the sound and light alarm device of being made up of indicator lamp D3 and buzzer Y, and auxiliary Ausgang is connected to run indicator D2.According to the operation instructions of LU-960M type programme regulator for temperature, the design temperature control program is realized the fuzzy control of temperature.
Claims (2)
1. six magnetic stirring apparatus of water bath with thermostatic control, by housing, water bath and electric heater unit thereof, water circulating pump and rectifier power source are formed, it is characterized in that: the case bottom, water bath plane that has electric heater unit is provided with six magnetic stirring apparatus, each magnetic stirring apparatus is made of four coils that circumference is symmetrically distributed respectively, the axis of each coil is parallel and perpendicular at the bottom of the water bath case, the pole polarity pole polarity identical and adjacent two coils with another that pass to adjacent two coils of each magnetic stirring apparatus under the DC current state are opposite, thereafter each relative coil alternately changes the DC current direction successively, the upper surface of each coil is respectively equipped with the pole piece of symmetry, corresponding pole piece longitudinal axis level intersects, its intersection point is corresponding with the container center in the water bath, described each magnetic stirring apparatus is respectively equipped with the controller that the driving module that is made of single-chip microcomputer and dual H-bridge drive circuit is formed, each PWM output of single-chip microcomputer is connected to and drives the corresponding dual H-bridge drive circuit of module control input end, corresponding respectively four coils that are connected in magnetic stirring apparatus in each dual H-bridge drive circuit control output end, the I/O mouth of described single-chip microcomputer is connected with the PWM square width and adjusts potentiometer, and potentiometer is provided with the mixing speed that is positioned at surface of shell and adjusts knob; Described electric heater unit is provided with programme regulator for temperature, and its thermocouple is arranged at water bath.
2. six magnetic stirring apparatus of water bath with thermostatic control according to claim 1, it is characterized in that: described water bath is provided with loam cake, and the loam cake position of each container correspondence is provided with perforate and buckle closure thereof in the water bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920097905XU CN201543405U (en) | 2009-07-23 | 2009-07-23 | Thermostatic waterbath six-head magnetic stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920097905XU CN201543405U (en) | 2009-07-23 | 2009-07-23 | Thermostatic waterbath six-head magnetic stirrer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201543405U true CN201543405U (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920097905XU Expired - Fee Related CN201543405U (en) | 2009-07-23 | 2009-07-23 | Thermostatic waterbath six-head magnetic stirrer |
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| Country | Link |
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| CN (1) | CN201543405U (en) |
Cited By (4)
| 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 |
| CN104307415A (en) * | 2014-11-11 | 2015-01-28 | 四川省科源工程技术测试中心 | Kerogen separation equipment |
| CN106950094A (en) * | 2017-05-11 | 2017-07-14 | 麦克奥迪（厦门）医疗诊断系统有限公司 | Mini multifunctional dyeing work station and colouring method |
| CN107748583A (en) * | 2017-11-17 | 2018-03-02 | 华南理工大学 | A kind of closed temperature-controlling reaction apparatus of batch-type |
-
2009
- 2009-07-23 CN CN200920097905XU patent/CN201543405U/en not_active Expired - Fee Related
Cited By (4)
| 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 |
| CN104307415A (en) * | 2014-11-11 | 2015-01-28 | 四川省科源工程技术测试中心 | Kerogen separation equipment |
| CN106950094A (en) * | 2017-05-11 | 2017-07-14 | 麦克奥迪（厦门）医疗诊断系统有限公司 | Mini multifunctional dyeing work station and colouring method |
| CN107748583A (en) * | 2017-11-17 | 2018-03-02 | 华南理工大学 | A kind of closed temperature-controlling reaction apparatus of batch-type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20110723 |