How to choose a weighing mixer mixer!

The working principle of the mixer: it is composed of a horizontally rotating container and rotating vertical stirring blades, etc., when the forming material is stirred, the container turns to the left, the blade turns to the right, due to the effect of countercurrent, the movement direction between the particles of the forming material is crossed, and the opportunity of mutual contact increases, the extrusion force of the countercurrent mixer on the material is small, the calorific value is low, the mixing efficiency is high, and the mixing is relatively uniform. Mixer principle:

Centrifugal principle, when the floating liquid containing fine particles is stationary, the floating particles gradually sink due to the action of the gravitational field. The heavier the particle, the faster it sinks, and conversely, the particle with a smaller density than the liquid will float.

One is the quality of the weighing system, and the other is the mixing uniformity of the mixer and the stability curve of the stirring motorized load. I have seen several sets of equipment, they are original instruments, load cells, original shielded wires, all-steel structure load-bearing frame + Shanghai Shengli single-shaft two-way double-layer double-head eight-screw belt mixer. When working, the meter digit jumps plus or minus 2kg, which should be said to be the most stable combination I have ever seen.

If you want to be stable, it is best to buy Ruida instruments, sensors, and shielded wires. There are many mixer manufacturers, not particularly bad, the most important thing is to suit your production process.

Whether it is concrete or mortar, gravity or forced.

According to the needs of the experiment, the stirrer is divided into two categories: magnetic stirring and electric stirring, of which magnetic stirring, temperature control stirring and constant temperature stirring, electric stirring is also ordinary stirring and digital stirring, and the power is selected according to the viscosity of the experimental product.

Agitator selection:

The structure and mixing characteristics of the agitator largely determine the mixing effect of the system, therefore, the selection of the agitator directly affects the mixing effect and operating cost of the whole mixing equipment. At present, there is no mature and perfect method for the selection of agitators for a given mixing process. Often for the same mixing purpose, several agitators can be used.

At this time, most of them rely on past experience, or similar industrial case analysis and mastery of scale-up technology, and sometimes for a special mixing process, it is necessary to carry out pilot test or even model demonstration process to determine the appropriate agitator structure.

The selection of agitators is based on the following aspects:

1. Distinguish which industry the mixing equipment is used in, mainly divided into the following major industries: environmental protection sewage treatment, environmental protection desulfurization, biochemical industry, food fermentation, grain deep processing, pharmaceutical, metallurgy, papermaking and other industries;

2. The external dimensions of the agitator tank should be applied, including the diameter height or length, width and height of the canned form (whether there is an upper and lower head or upper and lower flat, whether there is a cone bottom, etc.) (to determine the shaft length and the diameter of the paddle), and the distribution of the coil and the baffle in the tank should be clarified to prevent the paddle from touching;

3. The most important point is the situation of the materials in the tank, including the feeding method, continuous operation or intermittent operation, the name of the material, density, viscosity, solid content, pressure in the tank (decide whether to use sealing), temperature;

4. There is also the purpose of stirring, which mainly includes reaction, mixing, fermentation, anti-precipitation (suspension), extraction, crystallization, etc. (decide what kind of paddle form and speed to choose);

5. In addition, there are requirements for the material of the agitator, the requirements for the motor reducer and the brand of mechanical seal. According to the specific working conditions.

Specialized bag granulator. Internal mixer. Refinery. Extrusion. Mixer. Mixer.

The following aspects can be used for reference:

1. Selection of types.

For home use, a portable blender is an option.

It's easy to use and flexible, easy to collect when not in use, and lower.

However, this type of mixer is more strenuous to operate and less efficient.

2. Selection of specifications and sizes.

Usually you can choose 60W, 75W, 85W specifications.

If the family has a large number of people and is often used for minced meat, slicing, and shredding, you can choose a larger size.

3. Selection of electrical performance.

In addition, the motor vibration should be small, the noise should be low, and it should be small in size, light in weight, normal operation, easy operation of the switch buttons, and normal power-on.

4. Other options.

The appearance is beautiful, the electroplating parts are clean and bright, the handle has no sharp angles, the feel is good, and the seat should be placed steadily.

Although it takes a lot of experience to make the right choice, it is not difficult to make the right judgment as long as you understand the characteristics of different mixing methods and various types of mixers, and clarify the characteristics of specific processes. For example, for the suspension of solid particles in liquids, the agitation methods available are impeller agitation, jet agitation, and air agitation. In general, impeller agitation consumes the least energy, so if the system does not have special requirements, the impeller agitation method should of course be chosen.

Since the suspension of solid particles is mainly sensitive to the circulation velocity of the liquid in the tank, the circulation flow rate of the remote part of the tank must be sufficient to prevent the solid particles from settling to the bottom surface.

The gravimetric mixer adopts a new generation of single-chip microprocessor, a single-chip microprocessor with more powerful functions, faster computing speed, and stronger dry winding resistance, with automatic compensation function, which can be automatically calibrated every time the machine is turned on to ensure accurate accuracy. This series of new products is mainly used in plastic injection, extrusion or blow molding processes that require accurate mixing of a variety of raw materials by weight.

Features: * Single-chip processor design, stronger function, smaller size, strong anti-interference ability.

The memory uses EEPROM, and the setting data will not be lost after the power is cut off, so the battery is not required.

The use of man-machine interface status display, touch keyboard data input, more convenient operation, and can store a large number of formula data (500 sets).

High-speed, high-precision AD grabbing weight is faster and more stable.

All materials are evenly mixed after gravity measurement, and the accuracy can be strictly controlled.

The weight data and the raw materials selected are verified to ensure the precision and accuracy of the mixture.

It can be installed directly on the molding equipment, but the adapter base should be optional.

When the machine is used for ground installation, it needs to be equipped with a combination of pneumatic shut-off valve, tripod, storage bucket and suction box.

Last time I saw the weighing mixer upstairs at the Shanghai exhibition.

Ruida weighing mixer is used in the injection molding and extrusion industry for the use of a variety of raw materials in proportion to the precise mixing, the mixing accuracy can be up to the highest. All of this series of products use PLC controllers, and use advanced batching algorithms to ensure the high quality and comprehensive technical characteristics of this series of products, so that the product performance is excellent, stable and safe and reliable.

1.Modular and detachable structure design, space-saving and easy to clean;

2.Up to four raw materials can be processed at the same time; Built-in suction control program, which can save the cost of suction control;

3.PLC controller is used to ensure stable and reliable performance and easy maintenance;

4.Advanced control algorithm, independent optimization, automatic adjustment compensation and vibration prevention function are adopted to ensure the best batching accuracy;

6.Weighing, volume mixing and metering mode to increase the batching capacity; With recipe storage function, it can store more than 100 sets of recipes;

7.hierarchical security password control and alarm history function;

8.The controller is equipped with a standard interface, which can save the mixing ratio data to the U disk, which is convenient for production quality control;

9.It is equipped with sound and light alarms, which is convenient for equipment personnel to quickly and accurately reach the scene of the faulty machine.

10. All parts in contact with raw materials are made of stainless steel materials to prevent raw materials from being polluted.

11.It can be mounted directly on the machine or with an optional tripod next to the machine.