Laboratory Kneaders & Detailed Instructions For Use

Laboratory kneaders, small kneaders, and micro kneaders are specially used for laboratory production and small batch production. it is widely used in high-viscosity sealants, silicone rubber, neutral acid glass glue, chewing gum, bubble gum, pulp, and cellulose, also used in batteries, inks, pigments, dyes, medicines, resins, plastics, rubber, cosmetics, and other industries.

Structural features of laboratory kneader

1. The laboratory kneader generally adopts a through chassis for easy installation.

2. The helical gear or hard tooth surface reducer is used to make the transmission with the main engine stable, with low noise and long service life.

3. The stirring paddle and the inner wall of the mixing cylinder are made of 304 stainless steel or 316L stainless steel to ensure the purity of the product.

4. The shaft seal has an advanced structure and a good sealing effect. The unique design of the balance structure of the vacuum box ensures that no black material will be ground out.

5. Integrated electrical control (main engine operation, hydraulic tilting, hydraulic cover opening, and constant temperature control), temperature control, and temperature display, which is convenient for operation and process control.

The hydraulic system of the laboratory kneader uses a hydraulic station to control the large oil cylinder to complete the opening and closing functions. The hydraulic system uses a hydraulic station to control the oil cylinder to complete functions such as turning over the cylinder and opening the cover. The detailed parameters can be arbitrarily set by the user. Selection and requirements, easy and reliable operation. The transmission system is composed of a motor, a reducer, and a gear, and the motor is matched according to the model of the laboratory kneader. The transmission part is the synchronous speed of the motor. After passing through the elastic coupling to the reducer, the fast paddle is driven by the output device to make it reach the specified speed, and the speed can also be adjusted by the frequency converter.

The laboratory kneader has two Σ-shaped paddles. The speed of the two paddles is different. Different speeds can be set according to different processes. The most common speed is 42/28 rpm.

The laboratory kneader can be designed as heating or non-heating according to the needs. The heat exchange methods usually include electric heating, steam heating, circulating hot oil heating, circulating water cooling, etc.

The laboratory kneader is a pair of mating and rotating blades (usually Z-shaped) that generate strong shearing action to make semi-dry or rubber-like viscous plastic materials react quickly to obtain uniform mixing and stirring. The laboratory kneader is an ideal equipment for mixing, kneading, crushing, dispersing, and polymerizing various chemical products of various high-viscosity elastic-plastic materials. It has the advantages of uniform mixing, no dead angle, and high kneading efficiency. Widely used in high-viscosity sealant, silicone rubber, neutral acid glass glue, chewing gum, bubble gum, pulp, and cellulose, also used in batteries, inks, pigments, dyes, medicines, resins, plastics, rubber, cosmetics, and other industries.

The laboratory kneader can be made into four types: ordinary type, pressure type, vacuum type, and high-temperature type. According to the material, it can be divided into carbon steel kneader, stainless steel kneader, and special material kneader. The form of temperature adjustment adopts methods such as jacket, steam, oil high-temperature kneader heating, water cooling, etc., and hydraulic cylinder turning and cover opening are adopted. The discharge methods include hydraulic pressure, cylinder dumping, ball valve discharge, screw extrusion, hydraulic flap discharge, etc. And it can control and record the temperature, time, viscosity, and other related data in production in real-time through PLC. The cylinder body and the part of the paddle in contact with the material are made of stainless steel, alloy steel, manganese steel, and other materials to ensure product quality.

Detailed Instructions For Use

Four motion modes of laboratory kneader

1. The stirring paddle revolves along the wall to make the material move circularly along the cone wall;

2. The stirring paddle rotates to make the material rise from the bottom of the cone along the stirring paddle;

3. The combined movement of the stirring paddle and rotation can make part of the material being absorbed into the cylindrical surface of the stirring paddle, and at the same time, under the action of the centrifugal force of the paddle’s rotation, a part of the material in the cylindrical surface of the agitating paddle is discharged radially to the cone

4. The ascending material descends under its own gravity. The four kinds of movements produce convection, shearing, and diffusion in the kneader, so as to achieve the purpose of mixing materials quickly and uniformly.

Four stirring paddles for laboratory kneader

1. Fishtail type impeller is very suitable for kneading operation of cellulose material.

2. The z-type stirring paddle is also called the simple-type stirring paddle. It has a simple shape and is used to disperse and mix the pigment in the resin under the condition of high viscosity.

3. The cutting type impeller is a kind of tough impeller, which is suitable for the kneading operation of ultra-high viscosity materials under the condition of high power and heavy load.

4. The σ-type stirring paddle is a common type.

Maintenance and maintenance of laboratory kneader

At present, the kneader is usually welded and fixed on a base, and the equipment can be directly placed on the ground, and the user does not need to install it, which is very convenient. The main maintenance and maintenance measures are as follows:

1. The operator needs to fill the lubricating parts with oil frequently, and adopt the drip oiling type lubrication, and the oil should be added no less than twice per shift, while the press-in type oiling lubrication needs to be pressed into the butter once every 20 days, and the oil pool is also It needs to be replaced every three months.

2. The shaft seal of the wallboard should be adjusted or replaced according to the actual wear condition.

3. Users need to check the steam pipes and joints frequently, and no leakage is allowed.

4. After the machine has been in operation for six months, the user needs to carry out maintenance, check the vulnerable parts and make appropriate repairs or replacements.

5. After the kneader is installed, clean, decontaminate and wipe the anti-rust grease. Check each lubricating point and inject lubricating oil (grease).

6. Check the tension of the V-belt before driving, and move the motor to an appropriate position by adjusting the bolt.

As a professional kneader manufacturer, FRANLI has provided a complete set of mature equipment for related machines and production lines for more than 60 countries and thousands of industries in the world, and in Russia, Turkey, Spain, Brazil, Malaysia, Indonesia, and other regions, it has provided many An enterprise establishes related production lines.