Roller combined gyration-type used sand reconditioning system

Abstract

The invention discloses a roller combined gyration-type used sand reconditioning system, which comprises a roller reconditioning device, a dust removing device, a secondary demoulding device, a conveying device and a sand mixing device. A discharging port of the roller reconditioning device is connected with a feeding port of the secondary demoulding device. The dust removing device is located on the lateral portion of the roller reconditioning device. A discharging port of the secondary demoulding device is connected with the conveying device. The sand mixing device is located at the position of a discharging port of the conveying device. The roller combined gyration-type used sand reconditioning system integrates the basic functions of smashing, demoulding, dust removing, conveying and the like in an identical machine body, removes intermediate links to the maximum degree and preferably chooses the process scheme of jump running on the condition of gear shifting. The jump running process technology on the condition of gear shifting not only can be used in the sand reconditioning system but also can be used in other fields or other mechanical products. The jump running process technology is of special significance.

Description

technical field [0001] The invention belongs to the technical field of mechanical casting, and in particular relates to a drum-combined rotary type old sand recycling system. Background technique [0002] At present, domestic resin sand regeneration treatment generally adopts vibration friction regeneration process, but this process has the following four problems: [0003] First of all, the process has too many intermediate links and a long process, which brings trouble and inconvenience to the operation. The production process includes: shakeout-transportation-crushing-magnetic separation-regeneration-temperature adjustment-gas delivery-dust removal-sand mixing-molding, etc. If there are more than 10 links, if there is a problem in one link, the production of the whole line will be affected. [0004] Secondly, the equipment used in this process has a complex structure, a large body shape, a large workshop area, and a large number of supporting equipment, and the investmen...

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Problems solved by technology

[0003] First of all, the process has too many intermediate links and a long process, which brings trouble and inconvenience to the operation. The production process includes: shakeout-transportation-crushing-magnetic separation-regeneration-temperature adjustment-air delivery-dust removal-sand mixing-molding, etc. More than 10 links, if there is a problem in one link, the production of the whole line will be affected

[0004] Secondly, the equipment used in this process has a complex structure, a large body shape, a large workshop area, and a large number of supporting equipment, and the investment cost is high. There are more than 16 types of equipment in the complete production line, including: 1. Vibrating shakeout machine; 2. Magnetic separation belt conveyor; 3. Dust removal device; 4. Vibration regeneration machine; 5. Centrifugal regeneration machine; 6. Bucket elevator; 7. Boiling cooling bed; 8. Bucket elevator; 9. Pneumatic gate; 10. Medium pressure pressure feeding device; 11. Old sand storage; 12. New sand storage; 13. Bucket elevator; 14. New and old sand ratio regulator;

Due to the variety of equipment, the investment and manufacturing costs have been increased accordingly; the total value of a sand treatment production line with an annual output of 1,000 tons to 2,000 tons of castings is no less than 200,000 yuan. unaffordable price

[0005] Third, the vibration and friction regeneration process uses the vibration motor as the vibration source to generate excitation to break and rub the sand block, but it does not have the function of hammering and breaking, so it has a single purpose and is only suitable for the regeneration of resin sand. Water glass sand with high hardness and high strength cannot be used at all

[0006] Fourth, the vibration regeneration treatment system is equipped with computer control, which seems to have a high degree of automation, but due to the incomplete fault feedback system, once the ratio of sand, dust, temperature, resin and curing agent is out of balance, it will cause undue losses and waste, this kind of congenital defect is a difficult problem to overcome only by human subjective performance

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