Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of digital constant speed mixer in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk digital constant speed mixer in stock here from our factory. We also accept customized orders.
The Digital Constant Speed Overhead Stirrer is intended for use in laboratory mixing applications where it's crucial to keep the stirring speed constant despite variations in sample resistance.
When materials dissolve, react, concentrate, or add new ingredients during mixing, viscosity may rise. If the apparatus is unable to adjust for the increased resistance, changes in load may have an impact on motor speed.
In order to help maintain the chosen stirring speed, the constant-speed control system is made to monitor operating circumstances and modify motor output.
Common uses consist of:
1.Preparation of polymers and resins
2.Formulation of paint and coatings
3.Preparation of chemical solutions
4.Mixing in pharmaceutical laboratories
5.Preparation of suspension
6.Research materials
Because of this, the stirrer is especially well suited for laboratory procedures where constant mixing conditions must be maintained throughout the experiment.
product key technologies

The JB series digital constant speed mixer is composed of a series excitation motor with large starting torque, high speed, soft mechanical characteristics and a low noise deceleration mechanism. It is equipped with a microcomputer digital display timing control instrument, so that the product has the characteristics of large output power, low noise, reliable operation, stable speed regulation and convenient use. It is suitable for the use of heavy industry, light industry, chemical industry, pharmaceutical industry, scientific instrument and other production enterprises.
This digital constant speed mixer adopts electronic constant force speed regulation circuit, digital direct display shaft speed. It can meet the needs of different experiments in the laboratory, and can directly calculate the relationship between the linear velocity of stirring, dispersion and chemical reaction rate according to the displayed shaft speed, so as to provide correct process data for large-scale production.
Under the high-speed drive of the motor, the stirring head of the machine produces a high linear speed of rotation. Under the action of huge centrifugal force, the material produces strong hydraulic shear and high-frequency mechanical effects, so that the fluid material is subjected to thousands of shear and high-frequency mechanical effects per minute, so as to achieve the effect of efficient mixing, dispersion and dispersion.

Advantage
1. Precise control: The digital constant speed mixer has extremely high adjustment accuracy, which can be accurate to ±0.2%FS to ensure the stability and consistency of the stirring process.
2. Stable and reliable: when the load changes, the equipment can automatically compensate, keep the speed constant, and avoid the poor stirring effect caused by load fluctuation.
3. Easy operation: set the speed by one key, the digital display is intuitive and clear, so that the operator can easily start and improve the work efficiency.
4. Multi-functional adaptation: The equipment is compatible with a variety of impeller and container specifications to meet different experimental and production needs.
5. Safety and durability: Made of high quality materials, compact structure, strong durability, and overload protection function, to ensure the safety of use.
Technical Parameter
|
Model |
JB60D |
JB90D |
JB120D |
|
Output Power |
60W |
90W |
120W |
|
Power Supply |
AC 220V 50Hz |
||
|
Speed Regulation Range |
100-2000r/min, 3000r/min or customized according to user requirements |
||
|
Stirring Paddle |
¢8×300mm |
||
|
Stirring Paddle Material |
Stainless steel stirring paddle |
||
|
Size |
350×250×750mm |
||
|
Net weight |
14kg |
15kg |
16kg |
|
Measurement Resolution |
50r/min |
||
|
Control Accuracy |
±0.2%FS |
||
|
Transition Period |
<8S |
||
|
Speed Setting Step |
100r/min |
||
|
Applicable Motor Power |
≤550W |
||
|
Timing Range |
1-9999min (optional for JB-DT series models) |
||
|
Model |
JB200D |
JB300D |
JB500D |
|
Output Power |
200W |
300W |
500W |
|
Power Supply |
AC 220V 50Hz |
||
|
Speed Regulation Range |
100-2000r/min, 3000r/min or customized according to user requirements |
||
|
Stirring Paddle |
¢8×300mm |
||
|
Stirring Paddle Material |
Stainless steel stirring paddle |
||
|
Size |
350×250×750mm |
||
|
Net weight |
17kg |
18kg |
22kg |
|
Measurement Resolution |
50r/min |
||
|
Control Accuracy |
±0.2%FS |
||
|
Transition Period |
<8S |
||
|
Speed Setting Step |
100r/min |
||
|
Applicable Motor Power |
≤550 |
||
|
Timing Range |
1-9999min (optional for JB-DT series models) |
||
Why Constant Speed Matters When Viscosity Changes
During a mixing operation, a laboratory sample may not always retain the same viscosity.
For instance:
1.Powder could disintegrate over time.
2.The concentration of polymers may rise.
3.When mixing, ingredients may be added.
4.Changes in suspension concentration are possible.
5.Material characteristics may change as a result of chemical reactions.
The stirring system may be under more strain as a result of these modifications.
The real RPM may drop as resistance rises in the absence of proper speed control.
To account for these variations and help maintain the mixing process closer to the chosen operating speed, a constant-speed overhead stirrer was created.
For experiments that call for consistent mixing conditions, this is especially helpful.
Constant-Speed Mixing During Changing Sample Conditions
When sample properties change while mixing, the stirrer is especially helpful.
1.Preparing Polymers
Sample resistance may rise as polymers concentrate or dissolve.
Changing load circumstances are somewhat compensated for by the constant-speed control mechanism.
2.Formulation of Paint and Coatings
During preparation, pigments, resins, and additives can alter a formulation's viscosity.
Maintaining steady mixing conditions is facilitated by a steady stirring speed.
3.Pharmaceutical Composition
Viscosity can be affected by variations in formulation concentration.
Repeatability between laboratory batches is enhanced by controlled RPM.
4.Preparing Suspensions
As they are added to the liquid, solid particles and additives may make mixing more difficult.
As the sample varies, the stirrer aids in maintaining the chosen mixing condition.
FAQ
1.A constant-speed overhead stirrer: what is it?
This laboratory stirrer is made to respond to variations in mixing resistance while maintaining the chosen stirring speed.
2.What makes torque crucial while combining viscous liquids?
Greater resistance to the stirring shaft is produced by higher viscosity. Sufficient torque enables the motor to sustain the necessary stirring speed.
3.What occurs when the viscosity of the sample rises?
The load of mixing rises. Motor output can be modified via a constant-speed control system to account for varying resistance.
4.Does this stirrer work well with materials that have a high viscosity?
Although the actual application should be assessed based on viscosity, volume, RPM, and necessary torque, it may be appropriate for viscous laboratory materials.
5.Does torque and speed appear on the display?
The particular model setup determines this. If a real-time torque display is necessary, the product specification should be reviewed before placing an order.
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