2000L Sigma Mixer with Extruder

The screw extrusion type ordinary kneading machine is applied to the mixing, kneading, crushing, stirring, vulcanization, and re polymerization of high viscosity and high elastoplastic materials. The kneading machine has the advantages of uniform stirring, no Si angle, and high kneading efficiency. This machine has a wide range of functions, varieties, and applications, suitable for industries such as chewing gum, bubble gum, toothpaste, plastics, rubber, silicone rubber, dyes, pigments, inks, food adhesives, building coatings, carbon, cellulose, high viscosity sealants, neutral glass adhesives, aluminum silver paste, silicone gel, paper paste, cellulose, battery paste, dyes, silicone resins, cosmetics, etc.

The screw extrusion type ordinary kneading machine is composed of a pair of Sigma blades that cooperate and rotate with each other to produce strong shear action, which enables semi dry or rubber like viscous plastic materials to react quickly and obtain uniform mixing and stirring. The speed of the two blades is different, and different speeds can be set according to different processes. The most common speed is 42/28 revolutions per minute.

The screw extrusion ordinary kneading machine is mainly composed of five parts: kneading part, machine base part, hydraulic system, transmission system, and electronic control system. The hydraulic system is operated by a hydraulic station to control the large oil cylinder and complete the opening and closing functions. The hydraulic system is operated by a hydraulic station to control the oil cylinder and complete functions such as flipping the cylinder and opening the cover. The detailed parameters can be freely selected and requested by the user, and the operation is convenient and reliable. The transmission system consists of an electric motor, a reducer, and gears, and is matched with a motor according to the model of the kneading machine.

The transmission part of the screw extrusion ordinary kneading machine is synchronized by a motor, and after passing through an elastic coupling to the reducer, the output device drives the fast slurry to reach the specified speed, which can also be adjusted by a frequency converter.

Designed in heating and non heating forms according to requirements, heat exchange methods usually include electric heating, steam heating, circulating hot oil heating, circulating water cooling, etc.

The discharge methods of the kneading machine include hydraulic tilting, ball valve discharge, screw extrusion, etc. The cylinder body, blade and material contact parts are made of SUS304 stainless steel to ensure product quality.

Structural characteristics of screw extrusion ordinary kneading machine

1. The kneading machine generally adopts a through chassis for easy installation.

2. Adopting helical gears or hard tooth surface reducers ensures smooth transmission with the main engine, low noise, and long service life.

3. The mixing blades and inner walls of the mixing tank are made of SUS304 stainless steel or SUS316L stainless steel to ensure the purity of the products.

4. Shaft seal structure *, good sealing effect. *Designed a vacuum box balance structure to ensure that no black material is ground out.

5. Integrated electrical control (host operation, hydraulic cylinder flipping, hydraulic cover opening, and constant temperature control) and temperature control and display for easy operation and process control.

Classification and selection of kneading machines

1. Kneading machines can be made into ordinary, pressure, vacuum, and high-temperature types.

2. According to the material, it can be divided into carbon steel kneading machine, stainless steel kneading machine, and special material kneading machine.

3. The discharge methods include hydraulic tilting, ball valve discharge, screw extrusion, etc.

4. According to the machine design capacity, it is divided into SH-1-SH-3000 liters.

5. According to different heat transfer media, it can be divided into steam heating, thermal oil electric heating, and water cooling types.

6. According to the weight of the load and the degree of impact, it is divided into standard type and heavy-duty type.

Kneading machine blade structure:

1. The fish tail type stirring blade is suitable for kneading cellulose materials.

Z-type agitator, also known as simple agitator, has a simple shape and is used for dispersing and mixing pigments in resins under high viscosity conditions.

3. The cutting type stirring blade is the strongest and strongest stirring blade, suitable for kneading ultra-high viscosity substances under high power and heavy load conditions. When using cutting type mixing impellers, the arrangement of two blade tangent type is mostly adopted. Applicable materials: rubber, iron oxide, magnetic recording materials, etc.

4. The ∑ - type stirring blade is the most common type, which is suitable for kneading external substances that require significant movement in the kneading and tank operations. It is mainly used for the arrangement of two blades overlapping, especially in the case of extrusion dehydration operations, using ∑ - type stirring blades. Applicable materials: chewing gum, chocolate, glass glue, sealant, hot melt adhesive, butyl rubber, manhole cover, carbon materials, etc.

Kneading machines are usually welded and fixed on a base, and can be directly placed on the ground without the need for installation by users, which is very convenient. The main maintenance and upkeep measures are as follows:

1. Lubricating oil should be regularly injected into each lubrication part, with no less than two oil refills per shift. For press in lubrication, butter should be injected every 20 days, and the oil tank should be replaced every three months for lubrication.

2. The wall panel shaft seal should be adjusted or replaced appropriately according to the wear and tear during use.

3. Regularly check the steam pipeline and all joints, and no leakage is allowed.

4. The machine should undergo maintenance after six months of operation, checking for vulnerable parts and making appropriate repairs or replacements.

5. After the installation of the kneading machine, the first line should be cleaned, decontaminated, and wiped with rust proof grease. Check each lubrication point and inject lubricating oil (grease).

6. Before driving, check the tension of the V-belt and move the motor to the appropriate position by adjusting the bolt.

7. Check if the fasteners are loose, if the steam pipes are leaking, and if the circuits and electrical equipment are safe. Electric heating kneading machines must have grounding devices.

8. Before the test drive, clean the kneading machine room and run it in air for 10-15 minutes to confirm that the machine is running normally before putting it into production. Usually, the noise of new machine gears (including reducers) is relatively high during initial use, and it naturally decreases after a period of running in and out.

9. When using steam heating, a safety valve and pressure gauge should be installed at the inlet of the pipeline, and the steam pressure should not exceed the pressure requirements for mixing tanks as stated on the label.

10. The kneading machine workshop should minimize the use of reversals as much as possible.

11. Lubricating parts should be regularly oiled.

12. The sealing part of the wall panel should not have any leakage of raw materials.

13. The tightness of the belt is appropriate, and it should be checked, adjusted or replaced regularly.

14. Steam pipelines are not allowed to leak. When the machine is stopped, the valve should be closed and the reliability of the safety valve pressure gauge should be ensured.

FAQ

Q: What is the maximum viscosity of materials that this machine can handle?

A: It can efficiently process materials with a viscosity of up to 1,500,000 cP, such as heavy rubber compounds and high - viscosity resins.

Q: How long does it take to clean the machine after a production run?

A: With the optional clean - in - place (CIP) system, cleaning can be completed within 30 - 45 minutes. Manual cleaning typically takes 1 - 2 hours.

Q: Can the extrusion die be changed to produce different shapes?

A: Yes, the extrusion die is interchangeable, allowing for the production of various cross - sectional shapes such as round, square, and rectangular, with a changeover time of less than 1 hour.