Exhibition Hall of Kneading Machine, Chenzhou city, Hunan Province, 2020
Cutting impeller is one of the impellers with high strength, suitable for the friction operation of ultra-high viscosity materials under high power and high load conditions. When using the cutting impeller, the two impellers are mainly arranged along the tangent direction, and the applicable materials are rubber, iron oxide, magnetic recording materials, etc.
The extrusion methods of kneader include hydraulic cylinder tilt, ball valve discharge, screw extrusion, etc. SUS304 stainless steel is adopted for cylinder body, blade and material contact part to ensure product quality.
When using the screw extruder, press the screw forward button, the screw can move back and forth, and adjust the screw speed at the same time. Before turning off the power supply of the electric control box, press the power off button to start the kneader. Precautions before starting the kneader should be carefully checked whether the fasteners in each part of the body are loose to ensure that the operation will not cause danger to the operator.
The kneading machine chamber should be cleaned before debugging, and the kneading machine chamber should be idled for 10-15 minutes, and put into production after confirming normal operation. Generally speaking, the new gear (including the reducer) when the first use of a large noise, running in a period of time after the noise will naturally reduce.
The manufacturer of stainless steel kneader explained the problems frequently encountered in kneader production, poor wear resistance of equipment: In the kneading process of pigment, salt is used as the grinding medium, which has special requirements on the wear resistance of the impeller of kneading machine and the metal materials in contact with the inner wall of the container. Due to the reasons of materials and manufacturing technology, the service life of kneading machine is far lower than that of imported equipment, and it generally needs to be overhauled within two years, resulting in high operating cost. Therefore, wear resistance is the main factor restricting kneader's application in pigment production.
After the kneader is installed, before adding lubricating oil (grease) and starting, cleaning, decontamination, rubbing anti-rust grease, checking the lubrication points, checking the tension of the triangle belt, and moving the motor to the appropriate position by adjusting the bolt should be carried out.
Before startup, check the V belt tension, adjust the bolt making machine to the appropriate location, check whether the fastener is loose, whether steam pipeline leak, circuit and electric equipment is safe, electric heating kneading machine must have a grounding device, debugging before cleaning kneading machine room, air operation kneading machine 10-15 minutes, after confirm the normal production.
Change the number of exhaust and exhaust stroke required debug apparatus has high working experience, because in general, the greater the exhaust stroke, the exhaust, the longer the more exhaust, but the reality is not the case, need to be determined according to the product structure, if some of the exhaust stroke of silica gel products is too big, there will be a bad air bubbles, can be solved by lowering the bubbles.
The agitator is reversible, single drive or double drive, simple and convenient, equipped with temperature control digital display device (material and heat transfer medium);
Change the discharge way of silica gel raw material, try to make silica gel raw material gradually fill the whole cavity from the side wall of the cavity in the process of pressurization;
Mechanical seal: compared with soft packing seal, it has the following advantages: long service life in oil and water medium, generally up to 1-2 years or longer, in chemical medium used for more than half a year; Long-term operation and reliable sealing, sealing state is very stable, the leakage is small, rough calculation, the leakage is generally only 1/100 soft packing seal; Suitable for a wide range of mechanical seals, suitable for low temperature, high temperature, vacuum, high pressure, different speed, all kinds of corrosive media and grinding media.
Performance advantages and maintenance of silicone rubber kneader. Silicone rubber kneader is a kind of semi-dry or rubber-like viscous plastic material. Due to the intense shearing action of a pair of matched cellulose kneaders and rotating blades (usually in the shape of Z or Sigma), it can react quickly and obtain uniform mixing and agitation.
The kneader used in this experiment mainly consists of kneading part, base, transmission system, vacuum system and electric control system.
The kneader is made of a pair of matching Sigma blades, which rotate each other to produce strong shearing action, enabling the semi-dry or rubbery viscous plastic materials to react quickly and obtain uniform mixing and stirring.
Adopts water-cooled structure, hydraulic cylinder rotation, cover open, unloading methods including hydraulic, turnover cylinder unloading, ball valve unloading, screw extrusion, cylinder body, blade and material contact part adopts SUS304 stainless steel, to ensure product quality. The main structure of silicone rubber kneader consists of kneading part, frame part, hydraulic system, transmission system and electric control system. Kneading machine is composed of cylinder block, clay shaft, wall panel, cylinder head and so on.
Wear of kneader bearing position and bearing chamber is generally caused by dimensional tolerance of parts, assembly process and heavy operating environment. Once wear, kneader blades will run unevenly, resulting in vibration or unexpected shutdown.
Kneader is composed of mixing cylinder, mixing paddle, big cover, bearing (seat), gear (box), reducer, chassis, main motor, screw motor, screw reducer, screw, electric control cabinet, etc. The main motor adopts belt drive, reducer deceleration, drive the mixer mixing cylinder in the two mixing paddle reverse rotation, when the mixer rotates, the agitator and agitator between the shear force, to achieve mixing, rubbing, crushing, dispersing the material effect.
So, when kneader shafts wear out, how do we repair them? According to the fact that kneader shaft has been disassembled and detected offline, the Solay process is adopted to control the concentricity in the repair process, and avoid the problems such as thermal stress, deformation and fracture in the repair welding. The on-site maintenance steps are as follows:
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