Electric Overhead Stirrer

Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of electric overhead stirrer in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk electric overhead stirrer in stock here from our factory. We also accept customized orders.

 

 

 

For controlled water mixing in laboratories, development development, and business testing environments, the QW-JB-250S Electric Overhead Stirrer is designed. It is capable of mixing tasks that call for a flexible rate selection and secure mechanical operation thanks to a 250 W motor and an adjustable speed range of 10 to 500 rpm.

This overhead mixer uses a motor-driven stainless metal stirring rod placed directly inside the water, in contrast to electromagnetic stirrers that rely on a electromagnetic drive beneath the vessel. According to the material's properties and warship dimensions, the operator can choose the appropriate bubbling speed and impeller arrangement.

 

product key technologies

01.

The QW-JB-250S laboratory mixer features high torque and low noise, making it particularly suitable for stirring at high viscosity and low speed. It is also equipped with control instruments and is suitable for production enterprises and units in heavy industry, light industry, chemical industry, pharmaceuticals, scientific instruments and other fields.

02.

1. This machine adopts an electric lifting system, which is convenient for lifting.

2. Install the two clamps respectively on the fixed frame, with the plane of the clamping rods facing upwards.

3. Fix the mixing bucket in the gripper and then tighten the fixing screws of the column.

4. Adjust the height position of the motor and the capacity inside the container.

For controlled blending tasks in laboratories and product development environments, the QW-JB-250S Electric Overhead Stirrer is recommended. Its electronic lifting structure and adjustable 10 to 500 motor speed range make it suitable for evaluating mixing procedures and creating liquid formulations.

1. Lab formulation development and research

Researchers frequently have to prepare liquid mixtures, test formulation behavior, and compare stirring conditions in chemical and material laboratories.

The QW-JB-250S can be considered for:

Reagent and solution preparation

Preliminary liquid blending trials

Coating and paint formulation research

Polymer solution preparation, subject to torque suitability

2. Pharmaceutical and Chemical R&D

Blending liquid ingredients, creating empirical formulations, and evaluating combining sequences may be part of laboratory development work. The material and experimental procedure can be changed to change the stirring speed.

Before testing, the paddle type and operating conditions should be confirmed for sensitive or extremely fluid formulations.

3. Process assessment on a process scale

Before moving to a larger creation system, laboratory mixing methods may need to be evaluated while the process is being developed. Within its proved working capacity, the QW-JB-250S can perform preliminary mixing tests and observe the parameters of the process.

The information obtained can aid in larger-scale captain or production mixer design. However, considerations for scale-up should not be solely based on rotary speed; instead, torque, vessel geometry, impeller diameter, and flow characteristics.

Engineers can use laboratory trials to assess:

Suitable stirring speed

Paddle geometry and placement

Mixing time

Material circulation and uniformity

Changes in viscosity during formulation

4. Small-Batch Preparation and Industrial Quality Control

The stirrer might also be used in small-batch preparation and quality control laboratories where handled overhead mixing is required.

Another common tasks include process evaluation tasks like coating tests, chemical formulation checks, reagent preparation for water treatment, and other tasks.

1. What is the speed range of the QW-JB-250S electric overhead stirrer?

The QW-JB-250S has a 10-500 rpm flexible speed range. The ideal operating frequency depends on the selected stirring paddle, vessel dimensions, working volume, and material viscosity.

2. What is the motor power of this laboratory overhead stirrer?

The QW-JB-250S is equipped with a 250 W motor and operates with a 220 V, 50 Hz power supply.

3. What materials can the QW-JB-250S mix?

It is suitable for testing the water mixing, preparation of solutions, and formulation in laboratories. The maximum torque, working size, and appropriate sail configuration must be confirmed before purchase for high-viscosity emulsions, polymers solutions, or suspensions.

4. What is the maximum stirring volume of the QW-JB-250S?

The published product information does not specify the optimum stirring quantity. The material, permeability, vessel dimensions, stirring paddle configuration, and other factors should all be considered when confirming this.

5. What is the function of the electric lifting structure?

The stirring rod and mixing vessel can be moved around and lowered with the aid of the electrical lifting structure, which makes it simpler to do so during equipment setup.

6. Can different stirring paddles be used with this overhead stirrer?

The mix and materials selection is influenced by the paddle selection. For various circulation requirements, flat-blade, propeller, and anchor designs are frequently employed. Before placing an order, please check the sail types, shaft dimensions, and QW-JB-250S compatibility before purchasing.

7. Is the QW-JB-250S suitable for pilot-scale production?

The instrument can support preliminary process evaluation and laboratory-scale mixing trials. For pilot-scale equipment selection, working volume, maximum torque, viscosity and mixing performance should be assessed to determine whether a larger mixer is required.

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