| 摘要 |
The invention relates to the devices for removal of dust from gas or air, in particular to the bag filters, which are used in various branches of industry, especially in metallurgy, chemical and construction. A fastener for attachment of a filter element of a bag filter in the filter element plate of bag filter includes a filter element that comprises a wire frame of several sections covered with a filter cloth and a sleeve and a metal ring installed at the top of the filter element, said metal ring is covered with the filter cloth. The filter element plate has cut round holes, the sleeve has a portion with a cylindrical or conical surface at the point, where the sleeve presses the cloth of the filter element to the cut hole of the filter element plate, and the height of this portion shall not exceed , and a lower portion with a conical surface, which has larger taper, and the generatrix of this taper forms a sharp angle with the plane of section of the portion of sleeve, which is in contact with the filter element cloth, and the height of lower portion of the sleeve does not exceed . In addition, the upper portion of the wire frame is equipped with a clamp permanently connected thereto, which height from the upper point of the sleeve while installing the filter element in the filter element plate does not exceed , and the lower portion of the wire frame is equipped with a part permanently connected thereto in the form of a cup of height not exceeding , and the part is cut from the sleeve, the sleeve is made as a whole with this part by stamping. Each section of the wire frame comprises longitudinal wires and wire rings, which diameter ranges from 3 to , and the number of longitudinal wires in each section is less than 12 pieces, and when connecting the wire frame sections, the distance between the closest rings of each section of interconnected sections of the wire frame is less than and the distance between closest to each other rings in each section is at least , and the external diameter of filter element does not exceed . The invention provides for reduction of material content of the bag filter itself and reduction of metal consumption for manufacture of a bag filter. |
