Specific classification of sand mixer
The sand machine is a kind of sand processing equipment widely used in the foundry industry. According to the characteristics of the sand mixing process, the sand mixer can be divided into: a wheel-type sand mixer mainly based on rolling and boring; Main blade type sand mixer; counter-flow or rotor type sand mixer with both grinding and mixing functions, and balance type sand mixer with rolling and mixing functions. According to the nature of work, the sand mixer can be divided into two types of batch mixers: batch and continuous. It appeared in the early 20th century and is still widely used in the mixing of type ( core ) sand with clay as a binder . The sand mixer is equipped with a certain weight of the wheel. When the sand is mixed, the wheel can revolve around the main shaft of the sand mixer and rotate around the wheel axis. The boring wheel grinds the sand while rolling, and the molding sand particles are coated with a film of a binder. When mixing surface sand and core sand, the quality of sand mixing is better than other sand mixers. In the early 1950s , a spring-loaded roller-type sand mixer was used. Due to the spring pressure, the weight of the wheel is reduced, and the higher spindle speed can be used. At the same time, the pressure can be automatically adjusted with the thickness of the sand layer being pressed, thereby ensuring uniform and uniform sand mixing effect and improving the efficiency of sand mixing.
Specific model
S1110 double roller type sand mixer;
S111A double roller type sand mixer;
S1112 double roller type sand mixer;
S114C double drum type sand mixer;
S118 double roller type sand mixer
Technical parameters Project unit S1110 S111A S114C S118 S1312 S1115 S1315 S1415 disk diameter mm 1000 1250 1820 1800 1200 1500 1500 1500 sand mixing amount t/h 1.5-2 2-4 10-13 13-15 5-6 6-8 8-10 7-9 feeding amount kg 110 140 500 500-600 180 300 350 320 power kw 4 4 15 22 7.5 11 11 11 A new type of sand mixer mixing clay wet sand with the development of high-speed high-pressure molding automatic production line . This type of sand mixer is characterized by the installation of a scraper and a high-speed rotor with blades on the eccentric portion of the sander chassis. The chassis rotates clockwise, the rotor and the scraper rotate counterclockwise, and the rotor rotates faster than the rotor. The speed of the chassis. During sand mixing, because the chassis and rotor of the sand mixer have opposite movements and different rotation speeds, the sand shovel on the chassis obtains different speed differences, and corresponding friction and shear forces are generated between the sand grains, thereby generating shovel, mixing, The role of crushing, etc., not only the mixing efficiency is high, but also the quality of the mixed molding sand is good.
Example: Experimental micro sand mixer
Experiments carried out with a sand mill is an important equipment experimental study sand casting process performance, experimental Mixer, regardless of grind wheel, or rotor. The bowl type , the amount of sand added at one time is 3 kg, which is mainly used for the routine performance experiment of the type ( core ) sand at room temperature. When these sand mixers are used for sand sand performance studies with only a few tens of grams or hundreds of grams of sand per time , such as thermal expansion studies , it will result in waste of high quality raw sand and binder , increasing the cost of experimentation. . In order to solve the above problems , we have developed an experimental micro-sand mixer with a sand mixing capacity of only 250 g . The micro-rotor type sand mill having a simple structure, convenient operation, the adjustable parameters, a small amount of sand, etc., through experiments, the mass of sand, mixed with a laboratory sand mill to achieve the requirements, while reducing raw material consumption, reduce the cost of experiments.
