Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Filter cloth for sludge drainage consolidation and preparation method of double-sided percolation drainage body
The invention discloses a preparation method of filter cloth for drainage consolidation of sludge, which comprises the following steps: taking the following raw materials in percentage by mass: 50-70% of polyester silk and 30-50% of polypropylene silk; spreading the polyester yarns and the polypropylene yarns, and blowing the spread polyester yarns and polypropylene yarns into a cotton collecting box through a fan; after being extruded out of the cotton collecting box, the cotton enters a cylinder, a plurality of sawteeth are arranged on the cylinder, a plurality of notches are formed in the sides, facing the roll-out side, of the sawteeth, and a 4-10 g/m < 2 > flat laying layer is formed after the cylinder comes out of the cylinder; 15-25 tiled layers are stacked and then needled to obtain a stacked layer; and heating the laminated layer through a first roller group to obtain the finished filter cloth, wherein the heating temperature of the first roller group is 170-220 DEG C. According to the invention, more than two kinds of short fibers are blended, needled and hot-melted, and the different melting points of the polyester yarns and the polypropylene yarns are utilized, so that the yarns with low melting points are melted, cooled and shaped, the net structure is stable, the strength of the filter cloth is improved, the filter cloth has a pure plane structure, sludge is not easy to attach, and the clogging of the filter membrane can be effectively avoided.
本发明公开了一种淤泥排水固结用滤布的制备方法，包括以下步骤：按质量分数取原料，原料包括50~70%的涤纶丝、30~50%的丙纶丝；将涤纶丝、丙纶丝铺摊，铺摊后经过风机吹入收棉箱；从收棉箱挤出后进入锡林，所述锡林上设有若干锯齿，所述锯齿朝向转出一侧设有若干凹口，锡林出来后形成4~10g/m2的平铺层；将15~25层平铺层叠合后进行针刺得到叠合层；将叠合层经过一号辊筒组加热得到成品滤布，所述一号辊筒组加热温度为170~220℃。本发明中用二种以上的短纤进行混纺、针刺热熔，利用涤纶丝、丙纶丝物质溶点不同，使低溶点的丝熔溶，冷却定型，网状结构稳定，提高滤布强度，纯平面结构，淤泥不易附结,即可效避免滤膜淤堵。
Filter cloth for sludge drainage consolidation and preparation method of double-sided percolation drainage body
The invention discloses a preparation method of filter cloth for drainage consolidation of sludge, which comprises the following steps: taking the following raw materials in percentage by mass: 50-70% of polyester silk and 30-50% of polypropylene silk; spreading the polyester yarns and the polypropylene yarns, and blowing the spread polyester yarns and polypropylene yarns into a cotton collecting box through a fan; after being extruded out of the cotton collecting box, the cotton enters a cylinder, a plurality of sawteeth are arranged on the cylinder, a plurality of notches are formed in the sides, facing the roll-out side, of the sawteeth, and a 4-10 g/m < 2 > flat laying layer is formed after the cylinder comes out of the cylinder; 15-25 tiled layers are stacked and then needled to obtain a stacked layer; and heating the laminated layer through a first roller group to obtain the finished filter cloth, wherein the heating temperature of the first roller group is 170-220 DEG C. According to the invention, more than two kinds of short fibers are blended, needled and hot-melted, and the different melting points of the polyester yarns and the polypropylene yarns are utilized, so that the yarns with low melting points are melted, cooled and shaped, the net structure is stable, the strength of the filter cloth is improved, the filter cloth has a pure plane structure, sludge is not easy to attach, and the clogging of the filter membrane can be effectively avoided.
本发明公开了一种淤泥排水固结用滤布的制备方法，包括以下步骤：按质量分数取原料，原料包括50~70%的涤纶丝、30~50%的丙纶丝；将涤纶丝、丙纶丝铺摊，铺摊后经过风机吹入收棉箱；从收棉箱挤出后进入锡林，所述锡林上设有若干锯齿，所述锯齿朝向转出一侧设有若干凹口，锡林出来后形成4~10g/m2的平铺层；将15~25层平铺层叠合后进行针刺得到叠合层；将叠合层经过一号辊筒组加热得到成品滤布，所述一号辊筒组加热温度为170~220℃。本发明中用二种以上的短纤进行混纺、针刺热熔，利用涤纶丝、丙纶丝物质溶点不同，使低溶点的丝熔溶，冷却定型，网状结构稳定，提高滤布强度，纯平面结构，淤泥不易附结,即可效避免滤膜淤堵。
Filter cloth for sludge drainage consolidation and preparation method of double-sided percolation drainage body
一种淤泥排水固结用滤布及双面渗滤排水体的制备方法
JIN YAWEI (Autor:in) / WANG JUN (Autor:in) / DENG YONGFENG (Autor:in) / LU YOUBING (Autor:in) / CHENG DA (Autor:in) / DING KAI (Autor:in) / CHEN ZIJIAN (Autor:in) / ZHOU JINXUE (Autor:in) / JIANG JUNNAN (Autor:in) / JIN YAJUN (Autor:in)
07.03.2023
Patent
Elektronische Ressource
Chinesisch
Drainage body and drainage method for drainage consolidation of soft soil body
| Europäisches Patentamt | 2023