Furan resin sand casting is mainly used for large castings or non-ferrous metal castings, but the casting production cycle is relatively long, and the cost of recycling old sand is higher than the production of green sand recycling. With the continuous innovation of foundry machinery and equipment, furan resin sand regeneration In the process of furan resin sand recycling, S56 vibrating regenerator and S52 eddy current centrifugal regenerator are the most widely used furan resin sand recycling equipment.
1. S56 Vibration Regenerator
1.1 Composition: The S56 vibration regenerator uses the vibration motor as the excitation source, and the excitation force is generated by two symmetrically arranged vibration motors rotating in opposite directions. The direction of the exciting force is at a certain angle to the horizontal direction, and the sand blocks rub against each other in the material basket. The sand particles on the surface of the sand blocks fall off during the grinding, and at the same time, part of the adhesive film is also removed. The sand particles or small sand masses smaller than the gap size of the material basket leak to the groove bottom plate with the corundum wear-resistant layer attached to the inclined bottom of the material basket, and then continue to be acted by the excited vibration force and move upwards. The friction between the surfaces can further break the sand mass and release the film. Then the material enters the screen for screening, the small sand mass that does not meet the size requirements is discharged from the side of the equipment through the slag discharge tank, and the under-screen is output into the next process.
1.2 Main features:
1.21 This machine is a multifunctional regenerator integrating crushing, regeneration, screening and rubbing, with compact design and complete functions. The main body is welded with Q235D high-quality carbon structural steel, and the residual internal stress of the welding is eliminated by heat treatment after welding. Thus, the overall stiffness and local strength of the device are guaranteed. The material of the falling sand grid is made of 16mn, and the grid holes are punched and uniform. Guarantee the overall performance of the equipment. 3.32 The spring adopts the 65si2mn material specially made by our company in Qingdao Spring Factory, which effectively improves the important indicators such as σb, σs, σ-1, etc., and can ensure stable normal working state and long fatigue limit. The vibration motor adopts Xinxiang Xinlan Baker or Yangzhou Baofei vibration motor.
1.22 The broken sand passes through the grid plate in the middle of the equipment in a shower shape, and falls into the rubbing regeneration chamber, where it rolls and undulates in waves, rubbing and colliding with each other, interspersed and rubbed to reach the sand outlet. There is a screening device to completely separate the slag and sand and flow out through their respective outlets.
1.23 There is a dust suction port on the upper part to suck away the dust generated during the crushing and regeneration process. So as to achieve the purpose of primary crushing and regeneration. Impurities and unbreakable foreign objects move in reaction force and are pushed to the slag outlet on the side, which can be removed manually and regularly.
2. S52 Eddy Current Centrifugal Regenerator
2.1 Composition: S52 series eddy current regenerators refer to the latest technology of Japan''''s Sun Casting Machine and are produced and manufactured after localized design. The eddy current regenerator is composed of a base, a motor, a rotary disk and a rotating shaft, a support, an annular wear-resistant retaining ring assembly, a casing and other components.
2.2 Working principle:
The motor drives the rotary disc to rotate at a high speed and makes the sand entering the disc by gravity to obtain centrifugal force and then move to the edge of the disc, and finally to the wear-resistant components around the equipment at high speed along the tangential direction of the rotary body. The sand particles are affected by friction and impact during the movement, so that the binder on the surface of the sand particles is removed.
2.3 Main features:
2.31 The deep-disk rotary basin is used to increase the time for the sand to stay in the basin, that is, to increase the time for sand friction. The specific surface area is about 1.3.
2.32 The sand is projected outward along the mouth of the regeneration basin and rubs and collides with the partially refracted sand, and then peels off the film. The regeneration rate is high and the breakage rate is low. The principle of regeneration is that the sand rubs against each other to remove the film, which not only ensures that the sand is not broken but also reduces the wear of the equipment.
The annular wear-resistant retaining ring assembly is made of high-chromium wear-resistant cast iron.
2.33 is provided with an access door, which is convenient for inspection or maintenance by the internal mechanism. Usually through the inspection window to observe the internal working conditions.
2.34 The rotary spindle adopts various dust-proof measures such as labyrinth seal, sealing ring seal and oil groove seal to prevent dust from entering the bearing parts.
2.35 The gap between the wear-resistant component and the rotary disc can be adjusted according to the relationship between the flow rate and the film release rate.
2.36 There are air inlets and air outlets on the equipment shell, and the dust generated in the production process can be discharged smoothly.
2.37 Low noise, small vibration, and low requirements for foundation. A manual oil pump is provided to lubricate the bearing parts regularly.
2.38 This machine is a multi-functional regenerator that integrates magnetic separation of micro-metal particles, full regeneration of sand rubbing and film removal, air separation, cooling and dust removal. During the working process, the sand that has undergone secondary magnetic separation enters the first-level regeneration basin. Under the action of centrifugal force, the sand is sprinkled in a parabolic shape through the regeneration basin with unique structure to the surrounding wear-resistant rebound plates, and the rebounded sand continues to enter. The sand is violently rubbed and then scattered to the lower retaining ring of special structure, and a sand eddy current is generated around the ring, which is violently rubbed with the continuously entering sand. Under the action of centrifugal force and hydrodynamic force, it first enters and passes through The sand is squeezed out of the lower retaining ring, and falls into the second-level regeneration basin in a rain-like manner through the diverting device to repeat the working process of the previous level. During the regeneration process, the sand is loosely thrown up many times, and the sand is rubbed against each other to release the film. The generated dust and tiny particles are sucked away by the suction port. After the secondary regeneration, the sand continues to rain down to the air separator, and through the multi-stage curtain structure, the dust in the sand and the sand exceeding 160# are separated or sucked away.
Qingdao Sanzhuji Equipment Manufacturing Co., Ltd. specializes in the production of Green Sand Molding Line,Self-hardening sand molding line,foundry machines,Sand molding machine,Sand casting equipment,sand mixer,GS high efficiency rotary mixer,Resin sand mixer,no-bake resin sand mixer,Jolt squeeze molding machine/Jolt-squeezing moulding machines,Multi- Piston Moulding Machine/Hydraulic multi-piston moulding machine,sand casting molding machine,sand reclamation equipment，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.
