What Is a Colloid Mill?

The colloid mill is composed of stainless steel and semi-stainless steel colloid mill. The basic principle is that the fixed tooth and the movable tooth are relatively linked at high speed. Except for the motor and some parts, all parts in contact with the material are made of high-strength stainless steel. In particular, the key dynamic and static grinding discs are strengthened. Therefore, they have good corrosion resistance and wear resistance. , Make the processed materials pollution-free sanitary and pure.

Colloid mill

Colloid mill is a number of patented products: with compact design, practical new model, beautiful appearance, good seal, stable performance, convenient operation, simple decoration, durable, wide adaptability, high production efficiency, etc., it is the ideal processing for fine materials device. Except for the motor and some parts, all parts in contact with the material are made of high-strength stainless steel. In particular, the key dynamic and static grinding discs are strengthened. Therefore, they have good corrosion resistance and wear resistance. , Make the processed materials pollution-free sanitary and pure.

Processing status: multi-stage on-line emulsification disperser

Equipment functions: online, dispersion, emulsification, sanitary

Three-stage online dispersion emulsifier

2. Three-stage stator and rotor form: 2G (coarse) 4M (medium) 6F (fine)

3. Perfect choice for stable homogeneous emulsions and suspensions

4. The decentralized head can be freely assembled, modularized, and easy to maintain

5. Only one treatment is needed to get concentrated particle size distribution

6. Stepless speed regulation (frequency converter)

7. All contact materials are SS316

8. Meet CIP / SIP cleaning standards, suitable for food and pharmaceutical production

9. Obtained a 3A certificate issued by the US Food and Drug Administration (FDA)

Shaft seal of emulsification equipment, double-end cartridge mechanical seal without dead angle, built-in mechanical pressure balance system cooling and lubricating mechanical seal, display pressure, up to 16 bar, surface treatment in full compliance with medical specifications, no dead angle at the lowest exit These are the special honors of IKA. DR series machine rotor linear speed is 23m / s, three-stage high-shear dispersing machine, mainly used for the production of microemulsion and ultrafine suspension emulsion. Because three sets of dispersing heads (stator + rotor) work in the working chamber at the same time, after the emulsion is subjected to high shear, the droplets are more delicate and the particle size distribution is narrower, so the resulting mixed liquid is more stable, and the three sets of dispersing heads are easy. Replacement, suitable for different process applications. Different types of machines in this series have the same speed and shear rate, which makes it easy to expand production. Right temperature.

Application: cream, cosmetics, toothpaste, fruit juice, salt solution, catalyst, polymer emulsion, insecticide, herbicide, fungicide, etc.

Equipment series: mixer, mixer, disperser, emulsifier, shear, homogenizer, grinder, colloid mill

Grinding equipment, homogenization equipment, shearing equipment, emulsification equipment, dispersing equipment, mixing equipment, stirring equipment, solid-liquid mixing equipment, powder-liquid mixing equipment, powder mixer, mixing dispersing machine, dispersion emulsifying machine, shear emulsifying machine , Emulsification homogenizer, shear homogenizer, mixing and stirring, high shear emulsifier, high shear disperser, high shear mixing equipment, high shear emulsification and dispersion equipment, high shear emulsification and homogenization equipment

Series equipment use form: online, batch, pipeline, pipeline, continuous semi-continuous

Series equipment use range: large scale production in laboratory pilot plant

2. Working principle of colloid mill

Working principle: The colloid mill is driven by a motor through a belt to drive the rotating teeth (or rotors) and the corresponding fixed teeth (or stators) to rotate at relatively high speeds. One of them rotates at high speed and the other is stationary. The weight or external pressure (which can be generated by the pump) is pressurized to generate a downward spiral impact force. When it passes through the gap between the fixed and rotating teeth (the gap is adjustable), it is subjected to strong shear force, friction force, and high frequency vibration The high-speed vortex and other physical effects can effectively emulsify, disperse, homogenize and crush the material, and achieve the effect of ultrafine crushing and emulsification of the material.

Compared with the pressure type homogenizer, colloid mill is a centrifugal device first. Its advantages are simple structure, convenient equipment maintenance, suitable for materials with higher viscosity and larger particles. Its main disadvantage is also determined by its structure. First of all, due to the centrifugal movement, the flow rate is not constant, and the flow rate varies greatly for different viscosity materials. For example, the same equipment, when processing viscous paint materials and thin milk fluids, the flow can differ by more than 10 times; secondly, due to high-speed friction between the rotor and the material, it is easy to generate large heat, The material to be treated is denatured. Third, the surface is more prone to abrasion, and after abrasion, the refinement effect will be significantly reduced.

1. Food industry:

1. Internal tooth structure, small size, low energy consumption; colloid mill motor is only 55KW.

2. Imported stator and rotor core components, unique anti-corrosion and wear-resistant materials, guaranteeing a service life of more than 200,000 tons.

3. The colloid mill motor is controlled by a frequency converter, the current impact is small, and the speed can be adjusted according to requirements.

4. Colloid mill gap can be adjusted within the range of 0.1 ~ 5mm.

5, can make up to 20% polymer asphalt successfully over grinding at one time, the minimum particle size of SBS can reach 0.1m, the shear grinding capacity is 10 times that of ordinary colloid mill, greatly reducing the residence time of asphalt at high temperatures, preventing High temperature aging.

6. It can cut and grind various modified asphalt varieties such as SBS, SBR, EVA, PE, waste rubber powder and rock asphalt.

1. Only the valve is switched, and the pump and mill are continuously running, which truly realizes uninterrupted production.

2. It can be processed and customized according to user needs. All models are reserved with external interfaces to expand its functions and output. It can be built in fixed factories or moved on-site.

3. There are two control modes: manual / automatic integrated and manual.

4, can produce ultra-high content of modified emulsified asphalt (SBS content 4%, asphalt content 65%).

5, can produce ultra-high content of modified asphalt (SBS content 12%).

6. Guide installation and operation on site, and provide the most optimized and advanced production technology and formula.

Colloidal Mill Selection Guide

Circulating tube type should be used for crushing thin materials, which can automatically and repeatedly process the materials and facilitate the connection between the upper and lower processes.

For crushing viscous materials, a straight outlet with a scraper should be used.

Crushing hard materials should use high-hard teeth. High hardness tooth colloid mill adopts special process method, and the hardness of grinding tooth can reach HV1400 1600.

The grinding of ordinary architectural coatings and foundry coatings can be done with a coating mill. The grinding base of the coating mill is made of carbon steel, and the coating mill is cheap.

Colloid mill factory inspection

First, each colloid mill must pass the inspection of the manufacturer's inspection department and be attached with a certificate before leaving the factory.

2. Each colloid mill must perform a no-load test at the rated speed for 30 minutes before leaving the factory. The products should meet the following requirements.

1. The machine runs normally and smoothly without abnormal sounds, and the control device is flexible and reliable.

2. There should be no loosening of each connecting piece and fastener.

3. For mass-produced products, at least two units should be sampled and tested in accordance with the provisions of JB / T9820.3, and the results should meet the requirements.

4. When the ordering unit accepts the product, it shall be inspected and accepted according to this standard. If it fails, it should be resubmitted for inspection after the factory returns for repair.

Under the condition that the user unit complies with the operating instructions of the mixer specified by the manufacturer, the manufacturer shall repair, replace or return the product if it is damaged due to poor manufacturing quality within one year from the date of purchase.

5. The quality of paint coating shall be inspected according to the provisions of JB / T? 5673.

Marking, packaging, transportation and storage

1. Each colloid mill should fix the product label in an obvious position. The label should meet the requirements. The label should indicate the following:

a) the name of the manufacturer;

b) product name and model;

c) spindle speed;

d) productivity;

e) supporting power;

f) machine weight;

g) product manufacturing number;

h) The date of manufacture of the product.

2. Mark the rotation direction of the rotor with a red arrow at an obvious position of the casing.

3. The colloid mill should be packed and shipped from the factory. The packing should be easy to transport and ensure that the product is not damaged.

4. The accessories (spare parts and tools) supplied with the product should be complete.

5. Each product should be accompanied by the following documents:

a) packing list;

b) product quality inspection certificate;

c) product instruction manual;

d) User opinion survey form.

6. All documents are sealed in plastic bags and then fixed in the box.

7. The colloid mill should be stored in moisture-proof and rain-proof facilities.

Colloid Mill Colloid Mill Maintenance Repair

1. The colloid mill is a high-precision machine with a line speed of up to 20m / s and a very small disc gap. After reassembling, you must use a dial indicator to correct the coaxiality error between the housing and the spindle 0.05mm.

2. When repairing the machine, during the process of disassembling and reassembling, never directly strike with iron cymbals. Tap lightly with a wooden hammer or pad to prevent damage to parts.

3. Local seals: static and dynamic seals. The static seal adopts O-shaped rubber ring, and the dynamic seal adopts hard mechanical combined seal. If it is found that the hard sealing surface is scratched, it should be ground and repaired on the flat glass or flat casting immediately. The abrasive is 200 # silicon carbide abrasive paste. If the seal is damaged or cracked, replace it immediately.

4. During the use, regular maintenance should be performed as appropriate according to the processing materials.

5. For maintenance and use of the motor, please refer to the motor manual.

6. Most of the random spare parts are national standard, ministry and bureau standard parts, and they are all purchased throughout the country ^[1]