High-resilience anti-blocking polyurethane bar screen and preparation method thereof

Abstract

A high-resilience anti-blocking polyurethane bar screen is composed of tensioning hooks, a fixing plate, bolts, round steel and a polyurethane bar screen surface. The polyurethane bar screen surface is characterized in that a steel wire rope core polyurethane coated rubber bar is used as a reinforcing area, aramid fiber rope core polyurethane coated rubber bars are used as warps, frameless polyurethane coated rubber bars are used as wefts, and joint points are subjected to hot melting welding to form screening areas; and all screen pores of the screen surface are inverted-cone-shaped. The production process comprises the following steps: firstly, trapezoidal-section coated rods are produced on an extruder by taking a steel wire rope, an aramid rope or frameless different materials as corewires; secondly, hot melting welding is conducted on screen mesh joint points according to hole pattern requirements, the steel wire rope core polyurethane coated bar is arranged at the installation position of a tensioning hook, the aramid fiber rope core polyurethane coated rubber bars are set as the warps, the frameless polyurethane coated rubber bars are set as the wefts; and thirdly, the tensioning hook, the round steel and a fixing plate are tightened through bolts at the edge of the screen. The high-resilience anti-blocking polyurethane bar screen has the characteristics of high wear resistance, good elasticity, strong toughness, strong screen pore deformability and excellent self-cleaning effect.

Description

Technical field: [0001] The invention relates to a material grading and screening device, in particular to a high-resilience anti-blocking polyurethane bar screen and a preparation method thereof. [0002] technical background: [0003] The polyurethane bar screen currently produced and used is made of a steel wire rope core covered with a polyurethane layer as the warp and weft wires. It is woven and hot-melted into a mesh at a certain temperature and process. The edge is equipped with a special metal tensioning hook. Fix the bent iron and tensioning bolts on the screen wall plate, and use the rigidity and strength of the steel wire rope and the high wear resistance of polyurethane to achieve the purpose of improving the life and wear resistance of the screen. However, during the use of the currently used bar screen with steel cord core coated with polyurethane layer, the following phenomenon will occur: because the cross section of the polyurethane bar screen is circular, t...

AI Technical Summary

Problems solved by technology

However, during the use of the currently used bar screen with steel cord core coated with polyurethane layer, the following phenomenon will occur: because the cross section of the polyurethane bar screen is circular, the pass shape forms a hyperbolic shape, and the upper half of the pass Big and small, the steel wire rope as the skeleton rod is not easy to deform during the vibration process, resulting in some granular materials with a size similar to the sieve hole being caught in the hole, which is not easy to penetrate the hole, and a large area of ​​hole blocking will occur, resulting in the failure of the screening area. , affecting the screening efficiency and seriously affecting the screening effect

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