Low Price Rubber Internal Mixer / Rubber Kneading Machine Mixing
Chamber Is 55L/75L/110L/200L
About kneading machine:
55L rubber mixer is an important equipment for mixing and
plasticizing rubber and related materials. The following is a
detailed introduction about it:
1. Basic structure:
- Mixing chamber: It is the main space for rubber mixing. Its
capacity is 55 liters and has enough space to accommodate rubber
raw materials and various additives for sufficient mixing and
refining. The inner wall of the mixing chamber is usually specially
treated, such as hard chrome plating, etc., with good wear
resistance and corrosion resistance, ensuring that the rubber will
not be contaminated during long-term use, and it is also easy to
clean.
- Rotor: It is the core component of the internal mixer. Its shape
and design play a key role in the mixing effect of rubber. The
rotor usually has spiral ridges, which can produce strong shearing,
extrusion and stirring effects on the rubber during rotation, so
that the rubber is fully mixed with various additives, and the
ridges and end faces of the rotor are generally welded with
wear-resistant hard alloy to improve its wear resistance and
service life.
- Top bolt: also known as pressure weight, used to apply pressure
to the rubber in the mixing chamber, enhance the friction and shear
force between the rubber and the rotor, and thus improve the mixing
effect. The pressure of the top bolt can be adjusted according to
different rubber formulas and process requirements.
- Turning mechanism: enables the mixing chamber to turn over when
needed to facilitate feeding and unloading. The turning angle is
generally around 110°-140°. This design is convenient for
connecting the upper and lower processes of the production process,
and for observing and cleaning the mixing chamber and rotor.
- Heating and cooling system: This system is used to control the
temperature in the mixing chamber to meet the requirements of
different rubber processing technologies. Heating methods usually
include steam heating, thermal oil heating, etc., and cooling
methods generally use water cooling. Through precise temperature
control, the rubber can be mixed at a suitable temperature to
ensure the quality and performance of the rubber.
- Electronic control system: used to control the operation of the
internal mixer, including the start, stop, speed adjustment of the
motor, and the monitoring and control of parameters such as
temperature and pressure. The electronic control system usually
adopts automatic control technology such as PLC, which has the
advantages of simple operation, high control accuracy and strong
reliability.
2. Working principle: Under specific temperature conditions (depending on the rubber
raw materials and process requirements, some need to be heated, and
some need to be cooled), the rubber raw materials and various
additives are added to the mixing chamber. Then, the motor is
started to drive the rotor to rotate. The rotor causes shear and
pressure on the material through different speeds and speed ratios,
thereby breaking the molecular chain of the rubber and increasing
the wettability of the rubber on the surface of the compound. In an
environment where the plasticizing temperature is reached, the
rubber raw materials and additives are mixed to achieve the purpose
of mixing, so that various additives can be fully dispersed in the
rubber and the components are evenly distributed.
3. Performance parameters:
- Drive motor power: usually about 75 kilowatts, which can provide
sufficient power for the rotation of the rotor to ensure that the
internal mixer can effectively mix the rubber.
- Output: The output of each batch is generally about 55-70
kilograms. The specific output will be affected by factors such as
the properties, formula and process parameters of the rubber raw
materials.
- Air pressure (if any): Some 55L internal mixers may use an air
pressure system to assist the pressurization of the top bolt. The
commonly used air pressure is generally around 0.6-0.8MPa.
4. Advantages:
- High production efficiency: Compared with traditional rubber
processing equipment such as open mills, internal mixers can
complete the mixing and plasticizing process of rubber in a shorter
time, greatly improving production efficiency.
- Uniform material dispersion: Through the strong shearing and
extrusion of the rotor and the pressurization of the top bolt, the
rubber can be fully mixed with various additives, and the material
dispersion is uniform, thereby ensuring the quality of rubber
products.
- Easy operation: Modern 55L internal mixers are usually equipped
with advanced electronic control systems, which are simple and
convenient to operate. Operators only need to undergo certain
training to master them.
- Good working environment: The internal mixer is a fully enclosed
structure, which can effectively reduce the leakage of dust and
exhaust gas generated during rubber processing, improve the working
environment, and reduce the health hazards to operators.
5. Application range: 55L rubber mixer is widely used in rubber products industry, such
as tire factory, cable factory, tape and hose factory, rubber shoe
factory, seal factory, calcium plastic product factory, etc. At the
same time, it is also suitable for mixing production in factories
of paint, dye, medicine, magnetic tape, film, etc.
Technical Parameters:
Product Parameters
| Parameter/model | X(S)N-3 | X(S)N-10 | X(S)N-20 | X(S)N-35 | X(S)N-55 | X(S)N-75 | X(S)N-110 | X(S)N-150 | X(S)N-200 |
| Total volume (L) | 8 | 25 | 45 | 80 | 125 | 175 | 250 | 325 | 440 |
| Working volume (L) | 3 | 10 | 20 | 35 | 55 | 75 | 110 | 150 | 200 |
| Driving motor power (KW) | 7.5 | 18.5 | 37 | 55 | 75 | 110 | 185 | 220 | 280 |
| Tilting motor power (KW) | 0.55 | 1.5 | 1.5 | 2.2 | 2.2 | 4 | 7.5 | 15 | 7.5 |
| Tilting angle | 140 | 140 | 140 | 140 | 140 | 140 | 140 | 140 | 140 |
| Rotor speed (RPM) | 32/25 | 32/25 | 32/26.5 | 32/24.5 | 32/26 | 32/26 | 30/24.5 | 30/24.5 | 30/24.5 |
| Pressure of compressed air (MPA) | 0.7-0.9 | 0.6-0.8 | 0.6-0.8 | 0.6-0.8 | 0.6-0.8 | 0.6-0.8 | 0.6-0.8 | 0.6-0.8 | 0.6-0.8 |
| Capacity of compressed air (m³/min) | ≥0.3 | ≥0. 5 | ≥0.7 | ≥0.9 | ≥1.0 | ≥1.3 | ≥1.6 | ≥2.0 | ≥2.0 |
| Pressure of cooling water (Mpa) | 0.2-0.4 | 0.2-0.4 | 0.2-0.4 | 0.3-0.4 | 0.3-0.4 | 0.3-0.4 | 0.3-0.4 | 0.3-0.4 | 0.3-0.4 |
| weight (kg) | 1038 | 3000 | 4437 | 6500 | 7850 | 10230 | 14200 | 19500 | 22500 |
Precautions:
The following matters need to be noted when using the rubber mixer:
I. Before operation
1. Check whether all parts of the equipment are normal, including
the mixing chamber, rotor, top bolt, flip mechanism, heating and
cooling system, electronic control system, etc., to ensure that
there is no damage, looseness or abnormality.
2. Confirm whether the safety devices of the equipment are intact
and effective, such as emergency stop buttons, safety interlock
devices, etc.
3. Check whether the electrical system is normal and whether the
display of each instrument is accurate.
4. Clean up the debris around the equipment to ensure that the
working area is tidy.
5. Adjust the equipment parameters such as temperature, pressure,
rotor speed, etc. according to the process requirements.
6. Wear personal protective equipment, such as safety helmets, work
clothes, gloves, protective glasses, etc.
II. During operation
1. When adding materials, they should be added in the order and
proportion required by the process to avoid adding too much
material at one time to cause equipment overload.
2. During operation, the operator should pay close attention to the
operating status of the equipment, such as changes in parameters
such as temperature, pressure, current, and whether there are
abnormal sounds, vibrations, etc.
3. It is strictly forbidden to put your hands or other parts of
your body into the mixing chamber to avoid danger.
4. Strictly abide by the operating procedures of the equipment, and
do not change the equipment parameters or perform illegal
operations without authorization.
5. If any abnormal situation is found in the equipment, the
operation should be stopped immediately, and the maintenance
personnel should be notified in time for processing.
III. After operation
1. After the rubber mixing is completed, the feeding should be
stopped first, and the equipment should be stopped after all the
materials in the mixing chamber are discharged.
2. Turn off the electrical system, clean the equipment and work
area, and keep the equipment clean.
3. Perform daily maintenance on the equipment, such as checking the
lubrication of each part, cleaning the heating and cooling system,
etc.
4. Regularly conduct comprehensive inspection and maintenance of
the equipment to ensure that the equipment is in good working
condition.
IV. Other precautions
1. Untrained personnel are not allowed to operate the equipment.
2. During the operation of the equipment, it is strictly forbidden
for unrelated personnel to approach.
3. Strictly abide by the safety operating procedures and relevant
safety regulations of the equipment to prevent safety accidents.
4. Carry out safety inspections on the equipment regularly to
promptly identify and eliminate potential safety hazards.
5. The wearing parts of the equipment should be replaced regularly
to ensure the normal operation of the equipment.
