3.1 Screening of large granular materials.
3.2 Screening out fine sand and dust below 100 mesh to ensure the air permeability of the type sand.
3.3 In the process of vibrating forward, the type sand exchanges heat with room temperature air, and the heated air is extracted by the dust removal system, while reducing the temperature of the type sand and reducing the pressure of the dust removal system. The sand is lifted by the hoist through the linear vibrating screen and sent to the sand temperature cooler for secondary sand temperature cooling, which is a non-powered device that controls the sand cooling time through the volume control device to reduce the sand temperature. The cooled sand is lifted by bucket elevator and sent by belt conveyor to 3 daily consumption sand stores respectively. The sand reservoir is equipped with pneumatic rain shower sand filler under each sand reservoir, which can realize uniform and large area sand filling, shorten sand filling time and reduce the impact of sand on white mold, which is the necessary sand filling method for thin-walled workpiece. The cooled dry sand enters the molding department under the daily consumption sand storage. So far, the whole process from sand dropping, cooling, dust removal, magnetic separation, cleaning debris and conveying is completed.
4、Electrical control system.
The whole line of vanishing mold sand processing line adopts PLC automatic program control, at the same time with automatic and manual switching function, the whole production line of each unit of equipment start, stop can achieve the following operation: press the total start button, the whole line will automatically start in order; when the whole line meets the stopping conditions, the whole line will automatically shut down, but if one of the unit of equipment does not meet the stopping conditions, the equipment can continue to run, until it meets the conditions after complete stopping. until it is completely shut down after meeting the conditions. When shutting down at the end of the shift, the whole line will be shut down sequentially by pressing the general stop button.
At the same time, the production line is equipped with a chain protection function for each unit of equipment. When the whole line or unit equipment is running, if one of the equipment fails to stop, the equipment will show a red light alarm, and the preceding equipment of the failed equipment will stop immediately while the following equipment will run normally. This protects the overload operation of the equipment and eliminates the occurrence of equipment accidents. The electric control of the whole line not only controls each unit of equipment, but also stops and starts the linkage control of the material level of sand storage. The PLC is Japanese Omron and other main electrical components are Siemens to ensure reliable operation of the whole line. This vanishing mold casting production line equipment configuration is scientific and reasonable, using advanced automatic control, to ensure the completion of the production program at the same time, improve the production efficiency, save a lot of labor for the enterprise, and really reflects the meaning of the green revolution in the foundry industry.
5、disappearing mold casting workshop environmental conditions of the advantages of.
5.1 Polystyrene foam is completely harmless to the environment at low temperatures, it has a small density, low labor intensity of mold making, good environment, mold making process is easy to achieve clean production.
5.2 The disappearing mold casting simplifies the core making and sand treatment process, the handling volume between processes is small, labor intensity is significantly reduced, and it is easy to realize mechanization and automation production.
5.3 Due to the use of good fluidity of dry sand molding, eliminating the need for sand mixing equipment, simplifying the modeling compact equipment, thus greatly reducing the noise and dust, old sand reuse equipment is also greatly simplified.
5.4 Since the core is not used, and the accuracy of the casting is realized, the cleaning workload is greatly reduced, and the noise and dust in the workshop are also reduced accordingly.
5.5 The treatment of exhaust gases such as CO is relatively small. During casting, the white mold is decomposed and vaporized by heat, and the generated exhaust gas enters the wet dust collector for water bath treatment by evacuation, then it is separated by vapor separator, and the separated exhaust gas is discharged into the atmosphere.
5.6 The whole production line is equipped with dust removal system, and air volume adjustment valve is set between each equipment; dust concentration is lower than the national standard.
5.7 Casting sand in the production line between the equipment closed processing, truly "no dust in the air, no loose sand on the ground", in short, disappearing mold casting is a nearly no margin of liquid metal precision molding technology, it is considered "the new casting technology of the 21st century " and "green engineering in casting".
Qingdao Sanzhuji Equipment Manufacturing Co., Ltd. specializes in the production of sand reclamation equipment, Sand casting equipment, GS high efficiency rotary mixer, no-bake resin sand mixer, Jolt squeeze molding machine/Jolt-squeezing moulding machines, Multi- Piston Moulding Machine/Hydraulic multi-piston moulding machine,foundry molding machine, flaskless moulding machine, shot blasting machine, dust collector, according to the amount of old sand recovered Carry out plan customization, and provide sand reclamation equipment installation, commissioning, and training. Welcome guests to visit the factory.
