Polyurethane anti-blocking self-cleaning sieve plate manufacturing method

Abstract

The invention belongs to the technical field of sieve plates used in vibration screening equipment, and particularly relates to a self-cleaning sieve plate manufacturing method. The polyurethane anti-blocking self-cleaning sieve plate manufacturing method comprises following steps of A, sieve net making, B, pouring mold making, C, prepolymer synthesis, D, pouring and E, sieve plate splicing. According to a polyurethane anti-blocking self-cleaning sieve plate manufactured through the method, the aperture ratio is higher than that of a common sieve plate, the treatment capacity can be improved by about 40%, sieve wires can be independent, polyurethane strips are fixed, the phenomenon that when materials fall in a sieve net, sieve wires vibrate, and the materials are clamped and stacked is avoided, the sieve plate achieves the self-cleaning effect, the time for manually cleaning blockage of the sieve net can be shortened, and production efficiency is improved; special spring wire steel isadopted in the sieve wires, roughness is higher, strength is higher, the service life of the polyurethane anti-blocking self-cleaning sieve plate is three times that of a common sieve plate, when thelocal part is damaged, a sieve plate module is used for carrying out local replacement, and cost is saved.

Description

technical field [0001] The invention belongs to the technical field of sieve plates used in vibration screening equipment, in particular to a method for making a self-cleaning sieve plate. Background technique [0002] In metallurgy, coal, chemical and many other industries, materials such as washing, screening, grading, deslagging, desliming, dehydration and other processes need to be screened by vibrating screens. Screens or sieve plates are used on vibrating screens. The solid material is screened on the vibrating screen or sieve plate. [0003] At present, there is a dense convex-concave gap between the screen bar and the support bar of the stainless steel slotted sieve plate equipped with the screening equipment in the washing industry. The fibers worn by the belt are easily embedded in the convex and concave gaps. Over time, these fibers will cause the sieve slots of the sieve plate to be blocked, which will reduce the screen penetration rate of the sieve plate, which...

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Problems solved by technology

[0003] At present, there is a dense convex-concave gap between the screen bar and the support bar of the stainless steel slotted sieve plate equipped with the screening equipment in the washing industry. In the actual use process, many cotton wool, plastic and nylon mixed in the screened materials The fibers worn by the belt are easily embedded in the convex and concave gaps. Over time, these fibers will cause the sieve slots of the sieve plate to be blocked, which will reduce the sieve penetration rate of the sieve plate, which will further increase the loss of the sieve plate and increase the cost.

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