Method for treating precoated sand of raw material for manufacturing valve casting cavity

• Main Authors: LIU YAN, HUANG HAORUI
• Format: Patent
• Language: Chinese; English
• Published: 02.06.2020
• Subjects: CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; SEPARATING SOLIDS FROM SOLIDS; SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS; SORTING; TRANSPORTING

The invention provides a method for treating precoated sand of a raw material for manufacturing a valve casting cavity. The operation is finished by cooperating with a bottom frame, a screening net, avibration device, a screening device, a collecting bag and a collecting frame. The problems that the precoated sand of the part cannot be screened and recycled for secondary crushing, the cost is increased virtually, and the enterprise production is not facilitated due to the fact that traditional screening processing directly places the crushed precoated sand into the screen net for vibration screening, but the amount of single screening is more, the thickness of the precoated sand is larger, usually the precoated sand on the middle and lower layers is screened during vibration screening, and the precoated sand on the upper layer is difficult to be overturned to the lower layer depending on power can be solved. 本发明提供了一种阀门铸造型腔制作原材料覆膜砂处理方法，由底框、筛选网、振动装置、筛选装置、收集袋和收集框配合完成的作业，本发明可以解决现有传统的筛选处理直接将破碎后的覆膜砂放入筛选网中进行振动筛选，但是，