The pre operation of the mixer is as follows:
1, closed type rubber mixing machine air running test must be in the foundation completely dry solid rear can undertake.
2, check the sealing rubber machine parts have no foreign body, each connector and fasteners have loose.
3, check the sealing rubber mixing machine lubrication pipeline, hydraulic pipeline connection is correct, the use of lubrication and hydraulic oil quantity is appropriate, the oil level is appropriate, lubrication parts are in place.
4, sealing rubber mixing machine auxiliary equipment in the air before the need to carry out a separate inspection test, in order to verify whether its performance to meet the requirements.
5, check the sealing rubber mixing machine electrical equipment and hydraulic system and pneumatic control system, etc..
6, in the sealing rubber mixing machine coupling, before the main motor idle 20min, no abnormal, and then coupling installed, and install protective cover.
7, in the sealing rubber mixer main reducer high speed shaft end or in the coupling, with artificial disc drive system, make the rotor rotation for two weeks, confirmed no abnormal phenomenon.
Operation method of closed rubber mixing machine:
1, according to the closed rubber mixing room and the appropriate capacity of the filling coefficient (0.6 ~ 0.7), to calculate the amount of a mixture and the actual formula;
2, according to the actual formula, all kinds of weighing formula in the consumption of raw materials, plastic raw material, small (ZnO, SA, promoter, antioxidant, solid softener etc.), reinforcing agent, softening agent, filler or liquid sulfur were placed on the shelf, in order;
3, open the closed power mixer switch and heating switch, to the mixer preheating, and check the air pressure, hydraulic pressure, voltage is in accordance with the technical requirements, inspection and measuring system, timing device, power system indicating and recording is normal;
4, closed rubber mixing machine after preheating, stable for a period of time, ready rubber;
5 lift the top bolt, will have been cut into small pieces of rubber from the feeding port into the mixer, drop top bolt, rubber 1min;
6, lift the top bolt, add small material, fall on the top of the bolt mixing 1.5min;
7, lift the top bolt, add carbon black or packing, drop the top bolt mixing 3min;
8 lift the top bolt, adding liquid softener, drop top pin mixing 1.5min;
9, row glue, with thermocouple thermometer measuring the temperature of the glue, record the initial temperature of the mixing room, mixing at the end of the mixing chamber temperature and glue temperature, maximum power, rotor speed;
10, the mill's roll away to 3.8mm, turn on the power switch, the mill running, open circulating water valve, then the rubber material discharged from the mixer into the roller bag on an open mill to mix temperature drops below 110 DEG C, adding sulfur, about the cutting knife two, to eat is full of sulfur, rubber surface is smooth, cut rubber.
11, roller distance to 0.5mm, into the rubber thin, thin triangle package, through 5 times, will roll away to 2.4mm, into the rubber bag and the surface to be smooth, no bubbles, under the sheets, weighing total quality of rubber, placed on a flat, clean metal surface cooling at room temperature, and label compound number and mixing date for parking. The mixer mixing process of each batch of test reports, should be recorded: difference when mixing temperature, mixing time and rotor speed, pressure, discharge temperature, power consumption, mixing quality and total quality of raw materials and the mixer type.
Note: start mixing experiments, before mixing with a test compound of the same compound to adjust the mixer working state, and then formally mixing; of the same batch of mix and control conditions of the mixer and the mixing time should remain the same.